U.S. patent application number 14/548368 was filed with the patent office on 2015-10-08 for multiple cast-in insert apparatus for concrete.
The applicant listed for this patent is Hong Nam KIM. Invention is credited to Hong Nam KIM.
Application Number | 20150284967 14/548368 |
Document ID | / |
Family ID | 51982428 |
Filed Date | 2015-10-08 |
United States Patent
Application |
20150284967 |
Kind Code |
A1 |
KIM; Hong Nam |
October 8, 2015 |
MULTIPLE CAST-IN INSERT APPARATUS FOR CONCRETE
Abstract
Disclosed is a multiple cast-in insert apparatus for concrete,
including a supporting body fixed to a plate material configured to
pour the concrete and having a first screw formed along an inner
circumferential surface of a hollow coupling hole formed therein to
pass therethrough; a lifting body including a coupling part having
a second screw thread formed on an outer circumferential surface
thereof to be screwed with the first screw thread and thus to be
selectively moved up and down through the hollow coupling hole and
also having an anchor coupling hole formed therein, and a leveling
support part integrally formed along an upper edge of the coupling
part to protrude outward in a radial direction; and a spacer body
disposed above the supporting body and having a coupling
through-hole formed therein so that the coupling part passes
therethrough.
Inventors: |
KIM; Hong Nam; (Changwon-si,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KIM; Hong Nam |
Changwon-si |
|
KR |
|
|
Family ID: |
51982428 |
Appl. No.: |
14/548368 |
Filed: |
November 20, 2014 |
Current U.S.
Class: |
52/125.4 |
Current CPC
Class: |
E04C 5/125 20130101;
E04B 2001/4192 20130101; E04C 5/12 20130101; E04B 1/4121 20130101;
E04G 21/142 20130101 |
International
Class: |
E04G 21/14 20060101
E04G021/14; E04C 5/12 20060101 E04C005/12 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 3, 2014 |
KR |
10-2014-0039753 |
Apr 3, 2014 |
KR |
10-2014-0039754 |
Apr 3, 2014 |
KR |
10-2014-0039756 |
Apr 3, 2014 |
KR |
10-2014-0039758 |
May 20, 2014 |
KR |
10-2014-0060192 |
Claims
1. A multiple cast-in insert apparatus for concrete, comprising: a
supporting body configured to be fixed to a concrete form and
having a first screw thread formed along an inner circumferential
surface of a hollow coupling hole formed therein to pass
therethrough; a lifting body including a coupling part having a
second screw thread formed on an outer circumferential surface
thereof to be screwed into the first screw thread and thus to be
selectively moved up and down through the hollow coupling hole and
having an anchor coupling hole formed therein, and a leveling
support part integrally formed as a unitary body with the coupling
part along an upper edge of the coupling part to protrude outward
in a radial direction; and a spacer body disposed above the
supporting body and having i) a coupling through-hole formed
therein so that the coupling part passes therethrough and ii) an
upper surface on which a rebar configured to be installed in the
concrete is seated between the leveling support part and the spacer
body.
2. The apparatus of claim 1, wherein the spacer body include a
coupling body having a third screw thread formed along an inner
circumferential surface thereof to be coupled with the second screw
thread and thus to be selectively moved up and down along the
coupling part, and a seating part provided on an upper end of the
coupling body to be expanded outward in the radial direction.
3. The apparatus of claim 2, wherein a plurality of wire insertion
holes are formed in an outer circumferential surface of the seating
part so that a rebar binding wire for fixing the rebar to the
spacer body is inserted and bound therein.
4. The apparatus of claim 1, wherein a stopper body having a fourth
screw thread formed along an inner circumferential surface of a
press coupling hole formed therein to be coupled with the second
screw thread and thus to press an upper end of the supporting body,
when the stopper body is moved down, and thus to fix the lifting
body is provided between the upper end of the supporting body and
the spacer body.
5. A multiple cast-in insert apparatus for concrete, comprising: a
supporting body configured to be fixed to a concrete form and
having a hollow coupling hole formed therein to pass therethrough;
a lifting body including a coupling part screwed into the hollow
coupling hole to be selectively moved up and down and having an
anchor coupling hole formed therein, and a leveling support part
formed along an upper edge of the coupling part to integrally
protrude outward as a unitary body with the coupling part in a
radial direction; and a barrier cover which covers upper and side
surfaces of the leveling support part, wherein the barrier cover is
configured to expand when water is absorbed and to seal a portion
between the leveling support part and the concrete.
6. (canceled)
7. The apparatus of claim 5, wherein the supporting body is formed
of a reinforce synthetic resin and has a flange formed at an outer
circumferential surface of a lower end thereof to protrude outward
in a radial direction and thus to be coupled to one surface of a
cast the concrete form by a fastening means, and a stopper
configured to contact with an upper edge of the supporting body to
restrict screw-coupling is provided at an upper end of a screw
thread formed on the outer circumferential surface of the coupling
part to be screwed into a screw thread formed on an inner
circumferential surface of the hollow coupling hole.
8. The apparatus of claim 5, wherein a through portion formed at a
lower portion of the coupling part configured to pass through an
insulator disposed at an upper side of the concrete form is formed
at a lower portion of the supporting body.
9. The apparatus of claim 5, wherein a plurality of holes in which
rebar binding wires are inserted and bound are formed at an edge of
an outer circumferential surface of the leveling support part.
10. A multiple cast-in insert apparatus for concrete, comprising: a
supporting body configured to be fixed to a concrete form and
having an extension coupling hole formed therein to pass
therethrough; an extension body screwed into the extension coupling
hole to be selectively moved up and down and having a hollow
coupling hole formed therein to pass therethrough; and a lifting
body including a coupling part screwed into the hollow coupling
hole to be selectively moved up and down and having an anchor
coupling hole formed therein, and a leveling support part formed
along an upper edge of the coupling part to integrally protrude
outward as a unitary body with the coupling part in a radial
direction; and a barrier cover which covers upper and side surfaces
of the leveling support part, wherein the barrier cover is
configured to expand when water is absorbed and to seal a portion
between the leveling support part and the concrete.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to and the benefit of
Korean Application Nos. 10-2014-39753, 10-2014-39754, 10-2014-39756
and 10-2014-39758 which were filed on Apr. 3, 2014, and Korean
Application No. 10-2014-60192 which was filed on May 20, 2014 which
were hereby incorporated by references as if fully set forth
herein.
BACKGROUND
[0002] 1. Field of the Invention
[0003] The present invention relates to a multiple cast-in insert
apparatus for concrete, and more particularly, to a multiple
cast-in insert apparatus for concrete, in which an anchor for
installing various structures is coupled to the concrete so that
multiple functions are provided by one apparatus, and thus
convenience of construction is enhanced.
[0004] 2. Discussion of Related Art
[0005] Generally, in a concrete pouring operation, a cast is
manufactured according to a shape of a building and installed at a
pillar forming a frame of the building, and concrete is poured, and
if the concrete is dried and cured, the cast is removed.
[0006] At this time, an anchor for constructing various structures
is coupled to a ceiling of the building formed by the concrete. The
anchor may be inserted and coupled into an insert buried in the
concrete.
[0007] In a method of burying the insert in the concrete, there are
a post-install method in which a hole is bored after curing of the
concrete, and then the insert is installed in the hole, and a
cast-in method in which the insert is disposed at a position, in
which the anchor will be installed, in advance, and then the
concrete is poured. The cast-in method is mainly used.
[0008] FIG. 1 is an exemplary view of a conventional insert.
[0009] As illustrated in FIG. 1, the conventional insert 1 has an
anchor hole formed in a lower surface thereof. A lower end of the
insert 1 is installed at a bottom surface of a cast, concrete c is
poured and cured, the cast is removed, an anchor a is coupled in
the exposed anchor hole, and then various structures are
installed.
[0010] At this time, the structures include a duct, a ceiling
frame, an electric wiring, and so on. When the various structures
are installed at the anchor a, and then a ceiling plate is coupled
to the ceiling frame, construction of the ceiling is completed.
[0011] However, since the conventional insert 1 has a high
supporting force against a load of the anchor a, but the anchor a
is directly in contact with and supported by a surface portion of
the concrete c, there is a problem in that a crack may be easily
generated at the anchor, when a transverse pressure is applied to
the anchor a.
[0012] Further, since the generated crack is usually propagated to
an inner side of the anchor, a coupling force with the insert 1 is
weakened, and a supporting force of the concrete c may be
reduced.
[0013] Also, since a gap is frequently generated between the cast
and a lower surface of the insert 1 due to foreign substances, the
concrete c may be easily introduced into the anchor hole, and a
screw thread formed in the anchor hole may be damaged when the
introduced concrete c is removed, and thus it is difficult to
install the anchor a.
[0014] And in order to construct a connection rebar protruding
through a side portion using the concrete, a hole is formed in a
side wall portion of the cast, and the connection rebar is
inserted, and then the concrete is poured. However, the cast is
damaged due to the hole, and thus it is impossible to reuse the
cast.
[0015] Meanwhile, when a rebar is placed in the concrete c to
increase the supporting force of the concrete, a separate rebar
spacer is required to place the rebar which is spaced a
predetermined height from the cast.
[0016] Thus, since an additional material cost and an installation
period of time are required to provide and install the insert 1 for
installing the anchor a and the rebar spacer for placing the rebar,
a construction cost and a period of time are increased. Further,
since unnecessary devices are inserted into the concrete c, the
supporting force of the concrete c is reduced.
[0017] Furthermore, since a thickness of a concrete slab is changed
according to a purpose and a size of the building, the spacer
should be separately provided and installed to correspond to a
changed arrangement distance of the rebar.
[0018] Meanwhile, when the concrete c is poured, a leveler such as
a height indicating bar is used to check a thickness of the poured
concrete through confirmation of levelness of a concrete pouring
surface. At this time, separate products having various dimensions
corresponding to a state of a bottom surface or a poured height of
the concrete should be produced, or a product having a long
dimension should be cut and installed according to a dimension of a
corresponding construction. When the product having the long
dimension is used, there is inconvenience in a work, for example,
in which a protruding portion thereof should be removed after a
pouring operation of the concrete.
[0019] As described above, when the concrete c is poured, in order
to separately provide and install the insert 1, the rebar spacer,
and the leveler according to a design of the building, the design
and the construction become complicated, and the construction cost
and period of time are also increased, and thus it is difficult to
efficiently perform the construction.
SUMMARY OF THE INVENTION
[0020] The present invention is directed to a multiple cast-in
insert apparatus for concrete, in which an anchor for installing
various structures is coupled to the concrete so that multiple
functions are provided by one apparatus, and thus convenience of
construction is enhanced.
[0021] According to an aspect of the present invention, there is
provided a multiple cast-in insert apparatus for concrete,
including a supporting body fixed to a plate material configured to
pour the concrete and having a first screw formed along an inner
circumferential surface of a hollow coupling hole formed therein to
pass therethrough; a lifting body including a coupling part having
a second screw thread formed on an outer circumferential surface
thereof to be screwed with the first screw thread and thus to be
selectively moved up and down through the hollow coupling hole and
also having an anchor coupling hole formed therein, and a leveling
support part integrally formed along an upper edge of the coupling
part to protrude outward in a radial direction; and a spacer body
disposed above the supporting body and having a coupling
through-hole formed therein so that the coupling part passes
therethrough.
[0022] According to another aspect of the present invention, there
is provided a multiple cast-in insert apparatus for concrete,
including a supporting body fixed to a plate material configured to
pour the concrete and having a hollow coupling hole formed therein
to pass therethrough; and a lifting body including a coupling part
screwed with the hollow coupling hole to be selectively moved up
and down and having an anchor coupling hole formed therein, and a
leveling support part formed along an upper edge of the coupling
part to integrally protrude outward in a radial direction.
[0023] According to still another aspect of the present invention,
there is provided a multiple cast-in insert apparatus for concrete,
including a supporting body fixed to a plate material configured to
pour the concrete and having an extension coupling hole formed
therein to pass therethrough; an extension body screwed to the
extension coupling hole to be selectively moved up and down and
having a hollow coupling hole formed therein to pass therethrough;
and a lifting body including a coupling part screwed with the
hollow coupling hole to be selectively moved up and down and having
an anchor coupling hole formed therein, and a leveling support part
formed along an upper edge of the coupling part to integrally
protrude outward in a radial direction.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The above and other objects, features and advantages of the
present invention will become more apparent to those of ordinary
skill in the art by describing in detail exemplary embodiments
thereof with reference to the accompanying drawings, in which:
[0025] FIG. 1 is an exemplary view of a conventional insert;
[0026] FIG. 2 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a first embodiment of
the present invention;
[0027] FIG. 3 is an exemplary view illustrating a state in which
the multiple cast-in insert apparatus for concrete according to the
first embodiment of the present invention is installed in the
concrete;
[0028] FIG. 4 is an exemplary view illustrating a concrete
construction using the multiple cast-in insert apparatus for
concrete according to the first embodiment of the present
invention;
[0029] FIG. 5 is an exemplary view illustrating a state in which a
multiple cast-in insert apparatus for concrete according to a
second embodiment of the present invention is installed in the
concrete;
[0030] FIG. 6 is an exemplary view illustrating a state in which a
multiple cast-in insert apparatus for concrete according to a third
embodiment of the present invention is installed in the
concrete;
[0031] FIG. 7 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a fourth embodiment of
the present invention;
[0032] FIG. 8 is an exemplary view illustrating a state in which
the multiple cast-in insert apparatus for concrete according to the
fourth embodiment of the present invention is installed in the
concrete;
[0033] FIG. 9 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a fifth embodiment of
the present invention;
[0034] FIG. 10 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a sixth embodiment of
the present invention;
[0035] FIG. 11 is a schematic use diagram of a multiple cast-in
insert apparatus for concrete according to a seventh embodiment of
the present invention;
[0036] FIG. 12 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to an eighth embodiment of
the present invention; and
[0037] FIG. 13 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a ninth embodiment of
the present invention.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0038] Hereinafter, a multiple cast-in insert apparatus for
concrete according to preferred embodiments of the present
invention will be described in detail with reference to the
accompanying drawings.
[0039] FIG. 2 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a first embodiment of
the present invention, FIG. 3 is an exemplary view illustrating a
state in which the multiple cast-in insert apparatus for concrete
according to the first embodiment of the present invention is
installed in the concrete, and FIG. 4 is an exemplary view
illustrating a concrete construction using the multiple cast-in
insert apparatus for concrete according to the first embodiment of
the present invention.
[0040] The multiple cast-in insert apparatus 10 for concrete is an
apparatus which is installed at a preset arrangement location
before the concrete is poured and in which an anchor for installing
various structures is inserted and coupled after the concrete is
poured.
[0041] Further, the multiple cast-in insert apparatus 10 for
concrete may be used to supersede a rebar spacer for placing a
rebar and a leveler for measuring a pouring height of the concrete
other than the installation of the anchor, and may be applied to a
concrete construction having various dimensions. Therefore, a
design and preparation of the concrete construction may be
simplified and thus convenience of construction may be
enhanced.
[0042] As illustrated in FIGS. 2 to 4, the multiple cast-in insert
apparatus 10 for concrete according to the present invention
includes a supporting body 50, a lifting body 20, and a spacer body
30.
[0043] Herein, the supporting body 50 is fixed to a plate material
p for pouring the concrete, and has a first screw thread 51a formed
along an inner circumferential surface of a hollow coupling hole 51
formed therein. Preferably, the plate material p means a member
configured to form a cast in which the concrete is poured to form a
pillar, a bottom, a wall, or the like.
[0044] For example, the plate material p may be a plywood panel, on
which a releasing agent is coated along a concrete injection
surface, in the cast which is separated, removed, and then reused
after curing of the concrete, when a building is generally
constructed. Of course, the plate material p may be formed of
various materials such as a synthetic resin and an aluminum
material as well as the plywood panel. Also, the plate material may
include a structural deck plate formed of a metallic material not
to be separated after pouring of the concrete but to be combined
with the concrete and thus to increase the supporting force of the
concrete, unlike the cast which is separated after pouring of the
concrete.
[0045] Preferably, the supporting body 50 is fixed to a concrete
pouring surface t of the plate material p so as to be buried in the
concrete c. Here, it may be understood that the concrete pouring
surface includes a horizontally arranged upper surface of the plate
material or a vertically arranged inner side surface of the plate
material.
[0046] The supporting body 50 serves to fix and support the lifting
body 20, to which the anchor is coupled, to the plate material p,
and may be formed of a metallic material. However, in order to
easily perform a forming process and reduce a material cost, the
supporting body 50 is preferably formed of a reinforced synthetic
resin such as polyacetal (POM) or polyoxymethylene.
[0047] Meanwhile, as illustrated in FIG. 2, the supporting body 50
is fixed to the upper surface of the plate material p. When the
plate material is removed after the curing of the concrete c, a
lower surface of the supporting body 50 may be exposed through a
lower surface of the cured concrete c.
[0048] At this time, the hollow coupling hole 51 may be formed up
and down in the supporting body 50, and exposed through the lower
surface of the cured concrete c. Of course, the supporting body 50
may be formed as one tube, and may be formed in a multistage shape
to increase an expansion length range. At this time, the supporting
body 50 may include an internal body and an external body which are
screw-coupled, and the hollow coupling hole may be formed in the
internal body.
[0049] Meanwhile, the lifting body 20 includes a coupling part 20a
and a leveling support part 20b. Here, the coupling part 20a has a
second screw thread 21 formed on an outer circumferential surface
thereof to be screwed with the first screw thread 51a and to be
selectively moved up and down through the hollow coupling hole 51,
and an anchor coupling hole 22 is formed therein.
[0050] At this time, the coupling part 20a may be rotated in one
direction to be inserted into the hollow coupling hole 51, while
being disposed in an upper opening of the hollow coupling hole 51,
and may be rotated in the other direction to be withdrawn to an
upper portion of the hollow coupling hole 51.
[0051] The anchor coupling hole 22 is formed through a lower
surface of the coupling part 20a. When the plate material p is
separated after the curing of the concrete c, an anchor inserted
through a lower opening of the hollow coupling hole 51 may be
coupled into the anchor coupling hole 22.
[0052] Preferably, a screw thread for coupling of the anchor is
formed on an inner circumferential surface of the anchor coupling
hole 22. At this time, it may be understood that the anchor a has a
diameter having a standard size used in a general ceiling
construction. The anchor a may be coupled into the anchor coupling
hole 22 through the screw thread formed on an outer circumferential
surface of the anchor a. The anchor a may be exposed under the
concrete c while being coupled into the anchor coupling hole 22,
and the various structures constructed on the ceiling may be
installed at an exposed end of the anchor a.
[0053] Further, an anchor guide part 23 is preferably formed at a
lower portion of the anchor coupling hole 22 to be gradually
extended toward a lower side and thus to guide the anchor a. Here,
the anchor guide part 23 may connect the inner circumferential
surface of the anchor coupling hole 22 with an outer
circumferential surface of the coupling part 20a to be inclined
inward and upward in a radial direction. Therefore, when the anchor
a is pushed in along the anchor guide part 23, an end of the anchor
a is guided into the anchor coupling hole 22, and thus a coupling
operation may be easily performed, even though not being confirmed
visually.
[0054] Further, the leveling support part 20b is integrally formed
along an upper edge of the coupling part 20a to radially protrude
to an outer side. An upper surface 24 of the leveling support part
20b is preferably formed to be flat, thereby measuring a pouring
height of the concrete c. Preferably, the leveling support part 20b
has a polygonal cross section so that an external rotating force
may be accurately transmitted and thus the lifting body 20 may be
easily rotated.
[0055] The leveling support part 20b is inserted into the concrete
c, and a lower surface of a protruding portion thereof may be
supported by the concrete c and thus firmly coupled with the
concrete c. Therefore, the lifting body 20 buried in the concrete
may be prevented from being separated downward by a load of the
structure installed at the anchor a, and firmly fixed to an inner
side of the concrete c.
[0056] Of course, the supporting body 50 may be fixed to the plate
material which supports a side surface of the concrete c. At this
time, when the plate material is separated after the curing of the
concrete, the hollow coupling hole is exposed along a side portion
of the concrete, and the connection rebar may be inserted through
the hollow coupling hole and then coupled into the anchor coupling
hole.
[0057] Here, it may be understood that the connection rebar is a
rebar which protrudes from the ceiling or a side surface of a wall
formed of the concrete to be connected with another rebar or to be
coupled with other structures. The connection rebar may be simply
constructed, even though the plate material is not bored.
[0058] At this time, the lifting body 20 is a part which is buried
in the concrete to directly support the anchor, and may be formed
of a reinforced synthetic resin, such as POM, which has resistance
capacity against mechanical stress and fatigue failure. However,
the lifting body 20 is preferably formed of a metallic material,
such as steel, in consideration of the coupling force with the
concrete or the supporting force against the anchor.
[0059] Meanwhile, the spacer body 30 is disposed above the
supporting body 50, and has a coupling through-hole 31 formed
therein so that the coupling part 20a passes therethrough.
Preferably, the coupling through-hole 31 is formed to have a
diameter which is stopped by an upper edge of the supporting body
50.
[0060] That is, the coupling part 20a passes through the spacer
body 30 and is then coupled to the supporting body 50, and the
spacer body 30 is moved up and down along the coupling part 20a and
stopped by an upper end of the supporting body 50. At this time, a
rebar s may be seated on an upper surface of the spacer body 30.
Here, the spacer body 30 may be formed of a metallic material such
as steel or a reinforced plastic material such as POM.
[0061] The rebar s may be fixed by a rebar binding wire generally
used at a construction site. When the spacer body 30 is formed of
the metallic material, the rebar s may be fixed by welding or the
like.
[0062] As described above, since the lifting body 20 is screwed
with the supporting body 50 fixed to the plate material and moved
up and down, an upper surface of the leveling support part 20b may
be disposed in the predesigned pouring height of the concrete and
used as a pouring reference surface of the concrete. Therefore, by
fixing the rebar to the spacer body 30, it is possible to perform
multiple functions of an anchor insert, a leveler, and a rebar
spacer with one apparatus.
[0063] Meanwhile, a flange 52 which protrudes outward in a radial
direction and is coupled to the plate material p by a fastening
means may be provided at an outer circumferential surface of the
supporting body 50. At this time, various fastening means may be
provided according to a material of the plate material p and the
supporting body 50.
[0064] For example, when the plate material p is formed of the
plywood panel, a fixing nail n may be used as the fastening means
so that the flange 52 is coupled to the plate material. At this
time, the flange 52 may have a nail hole through which the fixing
nail is inserted, and the fixing nail n may be insert-molded in the
flange 52.
[0065] Further, when the plate material p is formed of a
fiber-reinforced plastic (FRP) material, the fastening means may be
replaced by an adhesive or a double-sided tape provided at a lower
surface of the flange 52. And when the plate material p and the
supporting body 50 are formed of a metallic material, the flange 52
may be fixed by the welding.
[0066] As described above, the lifting body 20 may be coupled in
the hollow coupling hole 51, while the supporting body 50 is fixed
to the plate material, and thus supported to be spaced from the
plate material p. Therefore, even though a gap between the plate
material p and the supporting body 50 is generated by a foreign
substance, and the concrete is introduced into the hollow coupling
hole 51, the introduced concrete is prevented from flowing into the
anchor coupling hole 22, and thus the screw thread of the anchor
coupling hole 22 may be prevented from being contaminated.
[0067] That is, even though a removing operation in which the
concrete attached and cured onto the screw thread formed on an
inner circumferential surface of the hollow coupling hole 51 is
broken or scraped off is not performed with difficulty, the anchor
a may be easily inserted and coupled into the anchor coupling hole
22, as long as a hole configured to expose the anchor coupling hole
22 is formed.
[0068] Further, since the supporting body 50 is separately provided
from the lifting body 20, an external force, such as a pressure and
an impact, applied from an outer side, when the concrete in the
hollow coupling hole 51 is removed to expose the anchor coupling
hole 22, may be absorbed by the supporting body 50, and blocked by
a portion thereof screwed with the lifting body 20. Therefore, the
screw thread formed in the anchor coupling hole 22 may be prevented
from being damaged by the external force, and the anchor a may be
easily coupled.
[0069] Preferably, a stopper 25 which is stopped by the upper edge
of the supporting body 50 to restrict the screw-coupling is
provided at an upper end of the second screw thread 21 formed on
the outer circumferential surface of the coupling part 20a.
[0070] At this time, the stopper 25 serves to restrict an insertion
depth of the coupling part 20a into the hollow coupling hole 51.
Through this, a distance between the anchor coupling hole 22 of the
lifting body 20 and the plate material p may be sufficiently
maintained to prevent introduction of the concrete. Here, the
supporting body 50 may be formed in a polygonal pillar shape, such
as square to octagonal pillars, or a cylindrical shape. However, it
is preferable that the supporting body 50 is formed in the
cylindrical shape so that a volume thereof occupied in the
concrete, while the hollow coupling hole 51 is formed, is
minimized.
[0071] Meanwhile, the lifting body 20 is coupled to the plate
material p by the supporting body 50, and an outer surface of the
lifting body 20 may be directly inserted into and combined with the
concrete to be firmly fixed after the curing of the concrete.
[0072] That is, as the leveling support part 20b which protrudes
outward from the outer circumferential surface of the coupling part
20a is inserted into the concrete, the supporting force against the
load may be enhanced. A contact area with the concrete c is
increased through the second screw thread 21 formed along the outer
circumferential surface of the coupling part 20a to be screwed in
the hollow coupling hole 51, and the coupling force with the
concrete c is further enhanced by an engagement due to a
concavo-convex shape.
[0073] At this time, since the lifting body 20 is not supported by
a surface of the concrete c, but supported by an inner side of the
concrete which is condensed by a load of a peripheral portion and
firmly combined with the peripheral portion, the supporting force
against the load may be improved, and a crack and an induced
propagation of the crack due to a transverse pressure may be
prevented.
[0074] Further, the outer circumferential surface of the coupling
part 20a in which the anchor a is inserted is covered by the
supporting body 50, and thus even when the transverse pressure is
applied to the anchor a, the pressure may be relieved by the
supporting body 50, and thus the concrete may be prevented from
being damaged due to the crack.
[0075] Furthermore, a clearance separated from the concrete may be
formed between the anchor a coupled to the coupling part 20a and
the inner circumferential surface of the hollow coupling hole 51.
That is, since the anchor coupling hole 22 is arranged in the
hollow coupling hole 51 in a multistage manner to have an inner
diameter smaller than that of the hollow coupling hole 51, the
clearance may be formed at the outer circumferential surface of the
anchor a. The anchor a may be moved left and right in the clearance
to relieve the transverse pressure.
[0076] Since the clearance is formed at an inner side of the hollow
coupling hole 51, a protruding length of the anchor for ensuring a
movement of the anchor a may be minimized, and space efficiency may
be enhanced.
[0077] Also, since the clearance between the hollow coupling hole
51 and the anchor is separated from the concrete, various finishing
treatments after the coupling of the anchor such as waterproofing,
sealing, and acoustic insulating may be performed at the inner side
of the hollow coupling hole 51 without any chemical damage of the
concrete, and thus construction quality may be improved.
[0078] For example, when a coupling portion between the anchor and
the anchor coupling hole 22 is sealed/waterproofed against a humid
environment or finished against a noise/water leak to improve an
indoor environment, a component which deteriorates the coupling
structure of the concrete c may be contained, and the component may
be blocked by the supporting body 50 and prevented from being in
contact with the concrete.
[0079] Thus, durability of a product may be improved, and the
lifting body 20 may be manufactured with a low-priced steel
material and may provide a high supporting force even in the humid
environment, and the present invention may be applied in various
construction environments and thus may have high economic
feasibility and reliability.
[0080] Also, the lifting body 20 which is directly coupled with the
concrete and provides the supporting force against the anchor may
be formed by the metallic material to provide a strong fixing
force, and the supporting body 50 which fixes the lifting body 20
to the cast may be formed of the reinforced synthetic resin. Due to
diversification of the material, a manufacturing cost may be
reduced. Therefore, a production cost may be reduced, while a
strong structure may be provided, and economic feasibility and
reliability of the product may be enhanced.
[0081] Meanwhile, the spacer body 30 may include a coupling body
30b having a third screw thread 31a formed along an inner
circumferential surface thereof to be screwed with the second screw
thread 21 and thus to be selectively moved up and down along the
coupling part 20a, and a seating part 30a provided on an upper end
of the coupling body 30b to be extended outward in a radial
direction.
[0082] Here, the coupling body 30b and the seating part 30a may be
integrally formed. However, for the sake of convenience of forming,
an example in which the coupling body 30b and the seating part 30a
are separately provided is illustrated. Preferably, the coupling
through-hole 31 includes a first coupling through-hole formed in
the coupling body 30b and a second coupling through-hole formed in
the seating part 30a.
[0083] At this time, the coupling body 30b may have a polygonal
cross section to be easily rotated. Preferably, the coupling body
30b has a hexagonal cross section.
[0084] The coupling body 30b is screwed with the coupling part 20a,
and thus may be selectively moved up and down according to a
rotating direction thereof.
[0085] Therefore, when the lifting body 20 is moved up and down so
that the leveling support part 20b is disposed at a predesigned
height of the pouring surface of the concrete, the coupling body
30b may be moved up and down in a height corresponding to the
height of the pouring surface of the concrete. Therefore, since the
multiple cast-in insert apparatus for concrete may arrange and
support the rebar at an accurate height, accuracy and convenience
of the construction may be enhanced.
[0086] Further, the seating part 30a forms a supporting surface on
the upper end of the coupling body 30b which protrudes outward from
an upper edge of the coupling body 30b so that the rebar s may be
seated thereon.
[0087] Since the rebar is seated and fixed to the seating part 30a,
and the concrete is poured along the plate material, the rebar may
be accurately arranged at a position corresponding to a pouring
thickness of the concrete.
[0088] At this time, since the rebar may be temporarily supported
at the height arranged by the seating part 30a, a binding operation
or a welding operation for fixing the rebar may be easily performed
without assistance of another operator.
[0089] As described above, the multiple functions of the anchor
insert, the leveler, and the rebar spacer may be performed with one
apparatus, and a pouring height standard of the concrete may be
provided according to various thicknesses of the concrete, and an
arrangement position of the rebar may be controlled.
[0090] Therefore, the rebar may be easily placed at the accurate
height without a process which provides a separate rebar spacer in
every construction or a rebar spacer having a standard size
corresponding to the pouring height of the concrete to be
constructed, and thus the accuracy and the convenience of the
construction may be improved.
[0091] At this time, preferably a distance between the rebar and a
lower surface of the concrete c is maintained to be 7 cm or more,
thereby preventing a crack from being generated at the lower
surface of the concrete c, when a pressure is applied to the lower
surface of the concrete c by the rebar s. To this end, a
longitudinal length of the supporting body 50 is preferably 5 to 7
cm.
[0092] Meanwhile, a barrier cover 40 which seals a boundary portion
with the concrete c by absorbing water and thus expanding may be
provided at an upper portion of the lifting body 20. Here, the
barrier cover 40 may cover upper and side surfaces of the leveling
support part 20b and may be caught and fixed by a lower surface of
the leveling support part 20b.
[0093] At this time, the barrier cover 40 may be selectively
provided when the upper surface of the leveling support part 20b is
exposed to an outer side of the concrete c and used as the leveler.
Preferably, the barrier cover 40 is provided when a pouring
position of the concrete c corresponds to a water leak occurring
section, such as a kitchen and a bathroom, in which water supply
and drainage pipes are located.
[0094] Preferably, the barrier cover 40 is formed of a
waterproofing material including a rubber material, a silicon
material, or a bentonite material. In particular, when the water
leak occurs, the barrier cover 40 formed of the bentonite material
may be expanded and thus may more accurately seal the boundary
portion with the concrete. That is, as the leveling support part
20b is exposed above the concrete, the boundary portion between the
concrete and the leveling support part 20b, which is vulnerable to
the water leak, can be sealed, and corrosion of the lifting body 20
due to introduction of water can be prevented.
[0095] The water introduced into the concrete may reduce a binding
force between particles of the cured concrete, a crack may be
generated, the generated crack may be easily propagated to the
inner side of the concrete, and thus the durability of a building
may be deteriorated. At this time, since the barrier cover 40 seals
the boundary portion between the leveling support part 20b and the
concrete and prevents water permeation, the safety and reliability
of the construction may be improved.
[0096] Meanwhile, referring to FIG. 4, when the plate material for
concrete construction is installed, the multiple cast-in insert
apparatus 10 for concrete may be installed at each position in
which the anchor a will be arranged.
[0097] At this time, in the multiple cast-in insert apparatus 10
for concrete installed at each position, the lifting body 20 may be
moved up and down to the predesigned pouring height of the
concrete, and the upper surface of the leveling support part 20b
may be used as a pouring reference surface of the concrete. And the
spacer body 30 may be moved up and down to an arrangement height of
the rebar corresponding to the pouring height of the concrete, and
the rebar s may be coupled and arranged on the seating part
30a.
[0098] As described above, the supporting body 50 may be installed
at each position in which the anchor will be arranged, and the
lifting body 20 and the spacer body 30 may be moved up and down to
correspond to the pouring height of the concrete having various
thicknesses and the arrangement height of the rebar, and thus the
functions of the rebar spacer and the leveler may be compatibly
performed. Therefore, since the entire construction may be
performed with only one kind of apparatus, design and preparation
of the construction may be simplified, and the convenience of the
product may be enhanced.
[0099] Furthermore, since inconvenient processes in which various
apparatuses such as the rebar spacer, the leveler, and the insert
are separately stored, each apparatus is prepared as required in
every construction, and the insufficient apparatus is separately
purchased may be eliminated, and only one kind of apparatus may be
compatibly used according to a situation of the construction, the
convenience of the construction may be considerably improved.
[0100] Further, since it is not necessary to install an individual
apparatus at various positions in which the rebar will be
supported, the height of the concrete will be measured, and the
anchor will be installed, and only one apparatus is installed, the
construction may be simply performed, and internal inserts which
reduce strength of the concrete may be minimized, and thus the
safety of the construction may be enhanced.
[0101] Meanwhile, FIG. 5 is an exemplary view illustrating a state
in which a multiple cast-in insert apparatus for concrete according
to a second embodiment of the present invention is installed in the
concrete. In the second embodiment, since basic configuration,
except that a stopper body 160 is provided between a spacer body
130 and a supporting body 150, is the same as that of the first
embodiment, the detailed description thereof will be omitted.
[0102] As illustrated in FIG. 5, the stopper body 160 having a
fourth screw thread 161a formed along an inner circumferential
surface of a press coupling hole 161 to be screwed with a second
screw thread 121 is preferably provided between an upper end of the
supporting body 150 and the spacer body 130 to press the upper end
of the supporting body 150, when the stopper body 160 is moved
down, and thus to fix a lifting body 120.
[0103] Here, the stopper body 160 may be screwed onto a coupling
part 120a to be moved up and down, and may be moved down along the
coupling part 120a to fix the lifting body 120, when the lifting
body 120 is moved up and down to a predesigned pouring height of
the concrete.
[0104] Specifically, when the stopper body 160 is rotated in the
other direction, the stopper body 160 is moved down along the
second screw thread 121 formed on an outer circumferential surface
of the coupling part 120a. When the stopper body 160 is in contact
with the upper end of the supporting body 150, the stopper body 160
is not moved down any more, presses the upper end of the supporting
body 150, and pushes and presses the lifting body 120 upward.
[0105] At this time, a first screw thread 151a of a hollow coupling
hole 151 and the second screw thread 121 of the coupling part 120a
are pressed up and down to each other, and the lifting body 120 may
be fixed not to be rotated.
[0106] Therefore, when the concrete is poured, the lifting body 120
may be prevented from being rotated by a moving pressure after
controlling of a height thereof, and thus the height of the lifting
body 120 may be prevented from being changed. Thus, a more accurate
pouring standard may be provided, and the accuracy of the
construction may be enhanced.
[0107] Here, the spacer body 130 and the stopper body 160 are
individually named according to each function, and may have the
same shape. The spacer body 130 and the stopper body 160 may be
used compatibly.
[0108] FIG. 6 is an exemplary view illustrating a state in which a
multiple cast-in insert apparatus for concrete according to a third
embodiment of the present invention is installed in the concrete.
In the third embodiment, since basic configuration, except a shape
of a spacer body 230, is the same as that of the first embodiment,
the detailed description thereof will be omitted.
[0109] As illustrated in FIG. 6, the spacer body 230 may have a
coupling through-hole 231 formed therein so that a coupling part
220a passes therethrough. Preferably, the coupling through-hole 231
may be formed to have a diameter which is caught by an upper edge
of a supporting body 250.
[0110] That is, the coupling part 220a may pass through the spacer
body 230 and may be coupled to the supporting body 250, and the
spacer body 230 may be moved up and down along the coupling part
220a and may be caught and supported by an upper end of the
supporting body 250.
[0111] At this time, the rebar s may be seated on an upper surface
of the spacer body 230. The spacer body 230 may be formed of a
metallic material or a reinforced plastic material such as POM.
[0112] Meanwhile, the spacer body 230 is formed in a thin circular
plate shape, and preferably has a plurality of wire insertion holes
232 formed along an outer area of the coupling through-hole 231 so
that a rebar binding wire w is inserted and bound. Here, it may be
understood that the rebar binding wire w means a wire which is
generally used to fix the rebar in the construction site.
[0113] While the spacer body 230 is caught an supported by the
upper edge of the supporting body 250, the rebar s is seated on the
upper surface of the spacer body 230, and the rebar binding wire w
is inserted into each wire insertion hole 232 to bind and fix the
rebar s.
[0114] Accordingly, the rebar s may be easily fixed regardless of
the material of the spacer body 230, and may prevent the rebar from
being moved by a pressure when the concrete is poured, and thus the
accuracy of the construction may be enhanced.
[0115] Meanwhile, FIG. 7 is a cross-sectional view of a multiple
cast-in insert apparatus for concrete according to a fourth
embodiment of the present invention, and FIG. 8 is an exemplary
view illustrating a state in which the multiple cast-in insert
apparatus for concrete according to the fourth embodiment of the
present invention is installed in the concrete.
[0116] In the fourth embodiment, since basic configuration, except
a shape of a supporting body 350 and that a through guide part 370
is coupled to a lower end of the supporting body 350, is the same
as that of the first embodiment, the detailed description thereof
will be omitted.
[0117] As illustrated in FIGS. 7 and 8, preferably the multiple
cast-in insert apparatus 300 for concrete further includes the
through guide part 370 removably coupled to a lower portion of the
supporting body 350.
[0118] Here, when an insulator e is provided at a lower portion of
the ceiling of a building or in a wall of the building, the
multiple cast-in insert apparatus 300 for concrete may pass through
the insulator e and may be fixed to the plate material p.
[0119] At this time, the insulator e may be formed of Styrofoam or
the like to prevent emission of inner heat of the building. While
the insulator e is disposed on an inner surface or an upper surface
of the plate material p, the concrete may be injected.
[0120] While the multiple cast-in insert apparatus 300 for concrete
passes through the insulator e and is fixed to the plate material
p, the concrete is poured, and thus multiple cast-in insert
apparatus 300 for concrete may be fixed to the inner side of the
concrete, and the insulator e may be firmly fixed to the concrete
c.
[0121] Meanwhile, the through guide part 370 preferably includes a
coupling portion 370b which is removably coupled to a lower portion
of a hollow coupling hole 351, and a wedge-shaped through portion
370a which becomes narrow downward so as to pass through the
insulator e provided along the plate material p.
[0122] Here, the wedge shape means a shape of which a lower portion
is narrower than an upper portion. An upper portion of the through
portion 370a has a circular cross section corresponding to an outer
circumferential surface of the supporting body 350 to become narrow
downward, and a lower portion thereof may be sharply formed in a
point or line shape.
[0123] That is, the through portion 370a may be formed in an
upside-down cone shape, or may extend downward from the outer
circumferential surface of the supporting body 350 to become narrow
and to have a blade shape forming a linear blade.
[0124] Therefore, the supporting body 350 in which the through
guide part 370 is coupled may be easily inserted into the insulator
e by a pressure applied from an outer side.
[0125] Referring to FIG. 8, after the concrete c is cured and the
plate material p is removed while the supporting body 350 is
inserted into the insulator e, one side of the insulator e may be
opened so that the through guide part 370 is exposed.
[0126] And a lower portion of the hollow coupling hole 351 may be
opened by separating the exposed through guide part 370, and the
anchor a may be inserted into the hollow coupling hole 351 and may
be coupled into an anchor coupling hole 322 of a lifting body
320.
[0127] Here, the coupling portion 370b may be inserted through a
lower opening of the hollow coupling hole 351. Since the coupling
portion 370b supports an inner circumferential surface of the
hollow coupling hole 351, the coupling portion 370b may prevent
separation of the through guide part 370, when the supporting body
350 is pressed so that the through guide part 370 passes through
the insulator e, and may accurately transmit the external force to
the through guide part 370.
[0128] At this time, the coupling portion 370b may be screwed or
fitted into the hollow coupling hole 351. Therefore, when the plate
material p is separated so that the through guide part 370 is
exposed, and the insulator e is opened, the coupling of the
coupling portion 370b may be easily released, and the through guide
part 370 may be reused, and thus efficiency of the product may be
enhanced.
[0129] Meanwhile, a plurality of fixing protrusions 353 may be
provided on the outer circumferential surface of the supporting
body 350 to be spaced from each other.
[0130] Preferably, a sliding portion 353a which is inclined upward
is formed at a lower portion of the fixing protrusion 353 to press
the insulator e and then to be inserted into the insulator e, and a
hooking portion 353b which forms a step to be restricted in the
insulator e is formed at an upper portion of the fixing protrusion
353.
[0131] At this time, the fixing protrusion 353 may be formed on the
outer circumferential surface of the supporting body 350 to have a
wing shape which protrudes up and down. The fixing protrusions 353
may be arranged to be spaced from each other.
[0132] Here, when the supporting body 350 is inserted into the
insulator e, a frictional force is reduced by the sliding portion
353a, and thus the fixing protrusion 353 is slid through the
insulator e and smoothly inserted into the insulator e, and also
prevents separation of the insulator e through the hooking portion
353b after the separating of the plate material, and thus a
coupling force between the insulator e and the concrete may be
improved.
[0133] Therefore, when the concrete is poured, the insulator e may
be installed together without a inconvenient process in which the
insulator is installed after the concrete construction, and thus
the convenience of the construction may be enhanced and also the
coupling force between the concrete and the insulator may be
improved, and the construction quality may be enhanced.
[0134] Preferably, a fixing nail 371 is insert-molded at a lower
end of the through guide part 370 to pass through the insulator e
and to be inserted into the plate material p.
[0135] Here, when the through guide part 370 is inserted through a
surface side of the plate material p, the fixing nail 371 is
inserted and fixed into the plate material p, and thus the through
guide part 370 and the supporting body 350 coupled to the through
guide part 370 may be more firmly fixed to an inner side of the
insulator e.
[0136] And when the plate material p is separated after the curing
of the concrete, a position of the through guide part 370 may be
confirmed through an end of the fixing nail 371 protruding outward
from the insulator e.
[0137] Therefore, when the insulator e is opened to couple the
anchor, an accurate cutting operation corresponding to the position
of the through guide part 370 may be performed, and thus a loss of
the insulator may be minimized, and the construction quality may be
enhanced.
[0138] Meanwhile, FIG. 9 is a cross-sectional view of a multiple
cast-in insert apparatus for concrete according to a fifth
embodiment of the present invention. In the fifth embodiment, since
basic configuration, except that the plate material is formed of a
structural deck plate d, is the same as that of the first
embodiment, the detailed description thereof will be omitted.
[0139] As illustrated in FIG. 9, the plate material is not
separated after the pouring of the concrete, but is coupled to the
concrete, and thus may be formed of the structural deck plate d
which enhances a structural force of the concrete.
[0140] At this time, in the structural deck plate d, a bore h may
be formed at an arrangement position of the anchor a. A supporting
body 450 may be fixed to a peripheral portion of the bore h, and a
hollow coupling hole 451 may be in communication with the bore
h.
[0141] Specifically, the deck plate d is stalled at a pillar
forming a frame of a building to construct a ceiling of the
building, and the concrete is injected into the deck plate d to
construct the ceiling.
[0142] At this time, the deck plate d may not be separated after
the pouring of the concrete, but may be combined with the concrete
to form the ceiling, and may be formed of a metallic material.
Preferably, the deck plate d is formed of an aluminum material
having a light weight and a high strength or a low-priced steel
material having a high supporting force against the load.
[0143] Further, the supporting body 450 may be seated and fixed to
the peripheral portion of the bore h and may be buried in the
concrete, and the anchor a may be coupled to a lifting body 420 in
the bore h.
[0144] Preferably, a diameter of the hollow coupling hole 451 is
formed to be the same as or smaller than a diameter of the bore h.
Further, a coupling part 420a may have a diameter smaller than that
of the bore h, and may pass through the bore h to be exposed under
the deck plate d.
[0145] A length of the coupling part 420a may be formed to be
longer than a sum of a thickness of the deck plate d and a height
of the supporting body 450, and while an upper end of the lifting
body 420 is moved up to the pouring surface of the concrete, a
lower end of the coupling part 420a may pass through the bore h and
then may be exposed.
[0146] Therefore, since an anchor coupling hole 422 of the coupling
part 420a may be exposed to an outer side through the bore h, the
anchor coupling hole 422 may be visually confirmed at a lower
surface of the deck plate d having a concavo-convex shape, and a
position of the anchor coupling hole 422 may be easily confirmed,
and thus workability may be improved.
[0147] Also, a flange 452 which protrudes outward may be formed at
an outer circumferential surface of a lower end of the supporting
body 450. The flange 452 may be fixed to the deck plate d through a
steel plate piece, a double-sided tape, an adhesive, or the like.
At this time, when the supporting body 450 is formed of a metallic
material, the supporting body 450 may be coupled to the deck plate
d by welding.
[0148] FIG. 10 is a cross-sectional view of a multiple cast-in
insert apparatus for concrete according to a sixth embodiment of
the present invention. In the sixth embodiment, since basic
configuration, except a shape of a supporting body 550, is the same
as that of the first embodiment, the detailed description thereof
will be omitted.
[0149] As illustrated in FIG. 10, the supporting body 550 may be
formed to have the same shape as a spacer body 530 and to be
reversed up and down, and fixed to the deck plate d. At this time,
a portion 550a corresponding to a seating part 530a of the spacer
body 530 may be disposed downward to face the deck plate d, and
thus may be coupled with the deck plate d by welding.
[0150] A stopper body 560 and the spacer body 530 may be coupled to
a coupling part 520a above the supporting body 550. At this time,
the supporting body 550, the spacer body 530, and the stopper body
560 are individually named according to each function, and may have
the same shape.
[0151] At this time, when a lifting body 520 is moved up and down
so that a leveling support part 520b is arranged at the predesigned
pouring height of the concrete, the stopper body 560 is rotated
downward to press the supporting body 550, and thus the lifting
body 520 is fixed.
[0152] And the spacer body 530 may be moved up and down to
correspond to the arrangement position of the rebar, and then the
rebar is fixed. Therefore, the rebar may be accurately arranged at
a position corresponding to the pouring thickness of the
concrete.
[0153] FIG. 11 is a schematic use diagram of a multiple cast-in
insert apparatus for concrete according to a seventh embodiment of
the present invention. In the seventh embodiment, since basic
configuration, except a drilling part 680 provided at a lower
portion of a supporting body 650, is the same as that of the first
embodiment, the detailed description thereof will be omitted.
[0154] As illustrated in FIG. 11, the multiple cast-in insert
apparatus 600 for concrete may further include the drilling part
680. The drilling part 680 may be removably coupled to a lower
portion of a hollow coupling hole 651 so as to bore a hole in the
deck plate d, when being rotated.
[0155] Specifically, the drilling part 680 may be screwed to the
lower portion of the hollow coupling hole 651. When the drilling
part 680 is rotated in the other direction, while being arranged at
the lower portion of the hollow coupling hole 651, the drilling
part 680 may be screwed and inserted into the hollow coupling hole
651.
[0156] A cutting blade 680a is formed at a lower portion of the
drilling part 680. When the cutting blade 680a is rotated while
being in contact with the deck plate d, the hole may be bored in
the deck plate d. At this time, it is preferable that a cutting
direction m of the cutting blade 680a and a screw-coupling
direction n of the drilling part 680 are set reversely.
[0157] That is, a rotating direction of the cutting blade 680a for
a cutting operation is preferably set to one direction which is
opposed to the screw-coupling direction of the drilling part 680
into the hollow coupling hole 651.
[0158] Therefore, the drilling part 680 may be prevented from being
released and separated from the hollow coupling hole 651 by a
frictional force generated when the cutting blade 680a is rotated,
and the cutting operation may be performed in a state in which the
drilling part 680 is fixed.
[0159] Further, a drill engaging part 654 which is engaged with a
drill chuck b to be integrally rotated is preferably formed at an
upper end of an outer circumferential surface of the supporting
body 650. Here, the drill engaging part 654 may be formed in a
polygonal cross section or a D-cut shape to be integrally rotated
with the drill chuck b.
[0160] Therefore, the drill engaging part 654 may accurately
transmit a rotating force of the drill chuck b to the drilling part
680. At this time, the drill chuck b is provided at an end of an
electric drill body to be spread or engaged by screw-tightening and
thus to fix a drill having various shapes. Preferably, the drill
chuck b is a general device which transmits the rotating force
generated from a motor in the electric drill body to the drill.
[0161] Specifically, when the drilling part 680 is in contact with
an anchor arranging position of the deck plate d, while being
coupled to a lower portion of the supporting body 650, and then the
rotating force is applied, the deck plate d may be cut and a hole
may be bored.
[0162] When a flange 652 is in contact with the deck plate d,
rotation of the drilling part 680 may be stopped, and the flange
652 may be coupled to the deck plate d. Then, the drilling part 680
may be separated, and the lifting body may be coupled to an upper
portion of the supporting body 650, and a height thereof may be
controlled according to the purposes of the leveler and the rebar
spacer, and then the concrete may be poured.
[0163] As described above, instead of a method in which the hollow
coupling hole 651 is aligned with a bore previously formed in the
deck plate d, and the flange 652 is coupled therein, the hole is
formed by the drilling part 680, and the hollow coupling hole 651
is automatically aligned, and thus the convenience of the product
may be enhanced.
[0164] Meanwhile, FIG. 12 is a cross-sectional view of a multiple
cast-in insert apparatus for concrete according to an eighth
embodiment of the present invention. In the eighth embodiment,
since basic configuration, except that a supporting body 750 is
formed in a multistage manner, is the same as that of the first
embodiment, the detailed description thereof will be omitted.
[0165] As illustrated in FIG. 12, the supporting body 750 may
include a first supporting body 750b fixed to the plate material p,
and a second supporting body 750a screwed to an inner side of the
first supporting body 750b to be moved up and down.
[0166] A lifting body 720 may be screwed into a hollow coupling
hole 751 formed at an inner side of the second supporting body
750a. Therefore, since the second supporting body 750a and the
lifting body 720 may be moved up and down in the multistage manner,
ranges of the thickness of the concrete and the arrangement
distance of the rebar may be extended, and thus it is possible to
be applied to various construction environments, and thus
compatibility of the product may be improved.
[0167] A supporting body stopper 790 may be coupled to an outer
side of the second supporting body 750a. Here, a supporting
through-hole 791 through which the second supporting body 750a
passes may be formed in the supporting body stopper 790, and the
supporting through-hole 791 may be screwed to the second supporting
body 750a.
[0168] And while the first supporting body 750b is fixed to the
plate material p, a height of the second supporting body 750a is
controlled, and an upper end of the first supporting body 750b is
pressed through the supporting body stopper 790, and thus the
second supporting body 750a may be fixed.
[0169] At this time, the rebar may be fixed to the supporting body
stopper 790 by the welding or the rebar binding wire. Therefore,
even in an engineering work which constructs a bridge, a tunnel and
a road having a larger scale than a general construction work, the
functions of the rebar spacer and the leveler may be performed to
correspond to a multistage arrangement of the rebar and a thick
thickness of the concrete.
[0170] Meanwhile, FIG. 13 is a cross-sectional view of a multiple
cast-in insert apparatus for concrete according to a ninth
embodiment of the present invention. In the ninth embodiment, since
basic configuration, except that an extension body 840 is provided
at a center portion, is the same as that of the first embodiment,
the detailed description thereof will be omitted.
[0171] As illustrated in FIG. 13, the supporting body 850 fixed to
the cast in which the concrete is poured has an extension coupling
hole 851 formed therein to pass therethrough. Further, an outer
circumferential surface of the extension body 840 is screwed to the
extension coupling hole 851 to be selective moved up and down, and
the hollow coupling hole 841 is formed in the extension body 840 to
pass therethrough.
[0172] Here, the coupling part 824 of the lifting body 820 is
screwed to the hollow coupling hole 841 to be selectively moved up
and down, and the anchor coupling hole 821 is formed therein.
Further, the leveling support part 825 of the lifting body 820 is
formed along an upper edge of the coupling part 824 to integrally
protrude outward in a radial direction. At this time, an upper
surface of the leveling support part 825 is preferably formed to be
flat and thus to measure the pouring height of the concrete.
[0173] A plurality of holes 825a through which the rebar binding
wires for binding the rebar pass may be formed at an edge of the
leveling support part 825. The forming of the holes may be also
applied to the first to eighth embodiments.
[0174] Since the extension body 840 is added, a longitudinal height
of the multiple cast-in insert apparatus for concrete may be
further varied and controlled, and it is possible to be applied to
a case in which the thickness of the concrete is thicker.
[0175] Through the above embodiments, the multiple cast-in insert
apparatus for concrete according to the present invention has the
following effects.
[0176] First, the lifting body is moved up and down in the
supporting body fixed to the plate material, and the leveling
support part is provided as the pouring reference surface of the
concrete, and the rebar is fixed to the spacer body moved up and
down along the coupling part, and the functions of the rebar spacer
and the leveler can be compatibly provided at various concrete
heights/rebar arranging heights, and thus the design and
preparation of the construction can be simplified, and the
convenience of the product can be enhanced.
[0177] Second, since the spacer body is moved up and down along the
coupling part and controlled according to the preset rebar
arranging height, the rebar can be aligned at the accurate height,
and also since the rebar can be temporarily supported by the
seating part, the binding operation or the welding operation of the
rebar can be easily performed without the assistance of another
operator.
[0178] Third, after the height of the lifting body is controlled,
the stopper body presses the upper end of the supporting body
downward to push up the lifting body and thus to firmly fix the
lifting body, and thus the rotation of the lifting body due to the
movement pressure when the concrete is poured can be prevented, and
the more accurate pouring standard can be provided, and thus the
accuracy of the construction can be enhanced.
[0179] It will be apparent to those skilled in the art that various
modifications can be made to the above-described exemplary
embodiments of the present invention without departing from the
spirit or scope of the invention. Thus, it is intended that the
present invention covers all such modifications provided they come
within the scope of the appended claims and their equivalents.
* * * * *