U.S. patent application number 13/053110 was filed with the patent office on 2012-09-27 for chair with waist rest and armrests.
Invention is credited to Yu-Ching HUNG.
Application Number | 20120242130 13/053110 |
Document ID | / |
Family ID | 46876741 |
Filed Date | 2012-09-27 |
United States Patent
Application |
20120242130 |
Kind Code |
A1 |
HUNG; Yu-Ching |
September 27, 2012 |
CHAIR WITH WAIST REST AND ARMRESTS
Abstract
A chair with waist rest and armrests comprises a connecting
element, a seat assembly, a chair back, a waist rest assembly, two
armrest assemblies, a height adjusting apparatus and a leg
assembly. The chair can be produced by a small number of simple
components to include waist rest assembly and armrest assemblies,
thus reducing the cost in production and assembly
Inventors: |
HUNG; Yu-Ching; (Taichung
City, TW) |
Family ID: |
46876741 |
Appl. No.: |
13/053110 |
Filed: |
March 21, 2011 |
Current U.S.
Class: |
297/344.18 |
Current CPC
Class: |
A47C 7/46 20130101 |
Class at
Publication: |
297/344.18 |
International
Class: |
A47C 3/20 20060101
A47C003/20 |
Claims
1. A chair with waist rest and armrests comprising: a connecting
element including a main body, two tube portions disposed at both
sides of the main body, two cylinder portions which are disposed at
both sides of the main body between the two tube elements; a seat
assembly including a cushion body disposed on an upper end surface
of the main body of the connecting element, and a loading plate
which is disposed on a lower end surface of the main body of the
connecting element and locked to the cushion body; a chair back
including a back rest plate, and two tube elements which are
connected to the back rest plate and engaged on the two cylinder
portions of the connecting element; a waist rest assembly including
a support element and a waist rest assembly plate, the support
element being locked between the two tube elements of the chair
back and including two locking portions to be used to lock the tube
elements and the cylinder portions, and a middle portion between
the two locking portions, the waist rest assembly plate being
disposed on the middle portion; and two armrest assemblies being
inserted into the respective tube portions of the connecting
element; a height adjusting apparatus including an outer tube, and
an inner tube which is connected to the loading plate and inserted
in the outer tube in a liftable manner; and a leg assembly being
connected to the outer tube of the height adjusting apparatus.
2. The chair with waist rest and armrests as claimed in claim 1,
wherein the cushion body includes a seat plate which is disposed on
the upper end surface of the main body and locked to the loading
plate, and a soft cushion engaged on the seat plate.
3. The chair with waist rest and armrests as claimed in claim 2,
wherein the loading plate, the main body and the seat plate are
locked together through screws.
4. The chair with waist rest and armrests as claimed in claim 1,
wherein the locking portions of the support element, the tube
elements of the chair back and the cylinder portions of the
connecting element are locked together through screws.
5. The chair with waist rest and armrests as claimed in claim 1,
wherein a curved elastic portion is connected between the
respective two locking portions and the middle portion of the
support element of the waist rest assembly.
6. The chair with waist rest and armrests as claimed in claim 1,
wherein the middle portion of the support element of the waist rest
assembly includes hollow cylinders, and the waist rest assembly
plate of the waist rest assembly includes protruding cylinders to
be inserted into the hollow cylinders of the support element.
7. The chair with waist rest and armrests as claimed in claim 1,
wherein the loading plate of the seat assembly includes an
insertion portion for insertion of a top end of the inner tube of
the height adjusting apparatus.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a combined chair, and more
particularly to a chair with waist rest and armrests.
[0003] 2. Description of the Prior Art
[0004] The existing chairs (for example office chairs) are normally
provided with a seat, a chair back and a leg assembly. The seat is
disposed on the leg assembly, and the chair back is connected to
the seat. In addition, to satisfy requirements of users of
different heights, between the seat and the leg assembly is
disposed a height adjusting device. Furthermore, to enhance the
seating comfort, the chairs are provided with armrest assemblies
for supporting arms and a waist rest assembly for supporting
waist.
[0005] However, when the chair only includes the seat, the chair
back and the leg assembly, the components of the chair and the
corresponding assembly are relatively easy, but once the chair is
further provided with the armrest assemblies and the waist rest
assembly, the components of the chair are complicated and the
assembly cost is greatly increased.
[0006] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages.
SUMMARY OF THE INVENTION
[0007] The primary objective of the present invention is to provide
a chair with waist rest and armrests which can reduce the cost in
production and assembly since it only comprises a small number of
simple components.
[0008] Hence, to achieve the above objective, a chair with waist
rest and armrests in accordance with the present invention
comprises a connecting element, a seat assembly, a chair back, a
waist rest assembly, two armrest assemblies, a height adjusting
apparatus, and a leg assembly. The connecting element includes a
main body, two tube portions disposed at both sides of the main
body, and two cylinder portions which are disposed at both sides of
the main body between the two tube elements. The seat assembly
includes a cushion body disposed on an upper end surface of the
main body of the connecting element, and a loading plate which is
disposed on a lower end surface of the main body of the connecting
element and locked to the cushion body. The chair back includes a
back rest plate, and two tube elements which are connected to the
back rest plate and engaged on the two cylinder portions of the
connecting element. The waist rest assembly includes a support
element and a waist rest assembly plate, the support element is
locked between the two tube elements of the chair back and includes
two locking portions to be used to lock the tube elements and the
cylinder portions, and a middle portion between the two locking
portions. The waist rest assembly plate is disposed on the middle
portion. The two armrest assemblies are inserted into the
respective tube portions of the connecting element. The height
adjusting apparatus includes an outer tube, and an inner tube which
is connected to the loading plate and inserted in the outer tube in
a liftable manner. The leg assembly is connected to the outer tube
of the height adjusting apparatus.
[0009] Preferably, the cushion body includes a seat plate which is
disposed on the upper end surface of the main body and locked to
the loading plate, and a soft cushion engaged on the seat
plate.
[0010] Preferably, the loading plate, the main body and the seat
plate are locked together through screws.
[0011] Preferably, the locking portions of the support element, the
tube elements of the chair back and the cylinder portions of the
connecting element are locked together through screws.
[0012] Preferably, a curved elastic portion is connected between
the respective two locking portions and the middle portion of the
support element of the waist rest assembly.
[0013] Preferably, the middle portion of the support element of the
waist rest assembly includes hollow cylinders, and the waist rest
assembly plate of the waist rest assembly includes protruding
cylinders to be inserted into the hollow cylinders of the support
element.
[0014] Preferably, the loading plate of the seat assembly includes
an insertion portion for insertion of a top end of the inner tube
of the height adjusting apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is an exploded view of a chair with waist rest and
armrests in accordance with the present invention, showing that the
respective components are separated;
[0016] FIG. 2 is a perspective view of the chair with waist rest
and armrests in accordance with the present invention, showing that
the respective components are combined;
[0017] FIG. 3 is an exploded view of the present invention, showing
that the connecting element and the seat assembly are
separated;
[0018] FIG. 4 is a cross-sectional view of the present invention,
showing that the connecting element is combined to the seat
assembly;
[0019] FIG. 5 is an exploded view of the present invention, showing
the chair back and the waist rest assembly are separated;
[0020] FIG. 6 is a cross-sectional view of the present invention,
showing that part of the connecting element, part of the chair back
and the waist rest assembly are combined;
[0021] FIG. 7 is an exploded view of the present invention, showing
the armrest assemblies, the height adjusting apparatus are
separated; and
[0022] FIG. 8 is a cross sectional-view of the present invention,
showing the height adjusting apparatus and the seat assembly are
combined.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] The present invention will be clearer from the following
description when viewed together with the accompanying drawings,
which show, for purpose of illustrations only, the preferred
embodiment in accordance with the present invention.
[0024] Referring to FIGS. 1-8, a chair with waist rest and armrests
in accordance with a preferred embodiment of the present invention
comprises a connecting element 10, a seat assembly 20, a chair back
30, a waist rest assembly 40, two armrest assemblies 50, a height
adjusting apparatus 60 and a leg assembly 70.
[0025] The connecting element 10 includes a main body 11, two tube
portions 12 disposed at both sides of the main body 11, and two
cylinder portions 13 which are disposed at both sides of the main
body 11 between the two tube portions 12.
[0026] The seat assembly 20 includes a cushion body 21 disposed on
an upper end surface of the main body 11 of the connecting element
10, and a loading plate 22 which is disposed on a lower end surface
of the main body 11 and locked to the cushion body 21. The loading
plate 22 includes an insertion portion 221. The cushion body 21
includes a seat plate 211 which is disposed on the upper end
surface of the main body 11 and locked to the loading plate 22, and
a soft cushion 212 disposed on the seat plate 211. The loading
plate 22, the main body 11 and the seat plate 211 are locked
through screws 81. The seat assembly 20 is combined as shown in
FIG. 4.
[0027] The chair back 30 includes a back rest plate 31, and two
tube elements 32 which are connected to the back rest plate 31 and
engaged on the two cylinder portions 13 of the connecting element
10.
[0028] The waist rest assembly 40 includes a support element 41 and
a waist rest assembly plate 42. The support element 41 is locked
between the two tube elements 32 of the chair back 30 and includes
two locking portions 411 to be used to lock the tube elements 32
and the cylinder portions 13 through two screws 82, and a middle
portion 412 between the two locking portions 411. Between the
respective two locking portions 411 and the middle portion 412 is
connected a curved elastic portion 413. The middle portion 412
includes two hollow cylinders 414. The waist rest assembly plate 42
includes two protruding cylinder 421 to be locked into the hollow
cylinders 414 by screws 83, so that the waist rest assembly plate
42 can be fixed on the middle portion 412 of the support element
41. The waist rest assembly 40 is combined as shown in FIG. 6.
[0029] The two armrest assemblies 50 are inserted into the
respective tube portions 12 of the connecting element 10 and can be
adjusted in height as desired. Since the height adjustment of the
armrest assemblies 50 is the conventional art, no further
explanation is provided herein.
[0030] The height adjusting apparatus 60 includes an outer tube 61,
and an inner tube 62 which is connected to the loading plate 22 of
the seat assembly 20 and inserted in the outer tube 61 in a
liftable manner. The inner tube 62 has its top end inserted into
the insertion portion 221 of the loading plate 22. The height
adjusting apparatus 60 is an air pressure bar. The loading plate 22
is provided with an operating rod 63 for adjusting the height of
the seat assembly 20 by operating the outer tube 61 and the inner
tube 62. Since the height adjusting apparatus 60 is conventional,
no further explanation is provided herein. The height adjusting
apparatus 60 is combined as shown in FIG. 8.
[0031] The leg assembly 70 is connected to the outer tube 61 of the
height adjusting apparatus 60.
[0032] The aforementioned is the summary of the positional and
structural relationship of the respective components of the
preferred embodiment in accordance with the present invention.
[0033] For a better understanding of the present invention, its
operation and function, reference should be made to the following
description:
[0034] To assemble the chair of the present invention, it only
needs to lock the seat assembly 20, the chair back 30 and the waist
rest assembly 40 to the connecting element 10 first, and then the
respect armrest assemblies 50 will be inserted into the tube
portions 12 of the connecting element 10, and the height adjusting
apparatus 60 will be assembled to the loading plate 22 of the seat
assembly 20, and finally, the leg assembly 70 will be combined to
the height adjusting apparatus 60, thus finishing the assembly of
the chair of the present invention. Hence, it can be found that the
assembly of the present invention is quite simple, thus reducing
the assembly cost. During the assembling process, the chair back
30, the waist rest assembly 40 and the connecting element 10 can be
synchronously locked by a screwing operation as shown in FIG. 6,
consequently, indeed reducing the assembly cost of the chair with
waist rest and armrests of the present invention.
[0035] It is to be noted that, the chair of the present invention
comprises the connecting element 10, the seat assembly 20, the
chair back 30, the waist rest assembly 40, the two armrest
assemblies 50, the height adjusting apparatus 60 and the leg
assembly 70, the waist rest assembly 40 includes the support
element 41 and the waist rest assembly plate 42, and the armrest
assemblies 50 are available in the market, so that the chair with
waist rest and armrests in accordance with the present invention
only comprises a small number of simple components, thus reducing
the cost in production and assembly.
[0036] While we have shown and described various embodiments in
accordance with the present invention, it is clear to those skilled
in the art that further embodiments may be made without departing
from the scope of the present invention.
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