U.S. patent application number 11/762194 was filed with the patent office on 2008-12-18 for strap fastener.
Invention is credited to Han-Ching HUANG.
Application Number | 20080307618 11/762194 |
Document ID | / |
Family ID | 40130999 |
Filed Date | 2008-12-18 |
United States Patent
Application |
20080307618 |
Kind Code |
A1 |
HUANG; Han-Ching |
December 18, 2008 |
Strap Fastener
Abstract
A strap fastener includes a frame, a handle and a reel inserted
through the frame and handle so that a strap can be reeled when the
reel is rotated. A plurality of bushings are inserted to a
plurality of grooves defined by the frame respectively for
protecting the reel from the handle or the frame. Two ratchet
wheels are connected to the reel. A first detent is movable on the
frame for engagement with the ratchet wheels. A second detent is
movable on the handle for engagement with the ratchet wheels.
Inventors: |
HUANG; Han-Ching; (Taichung,
TW) |
Correspondence
Address: |
KAMRATH & ASSOCIATES P.A.
4825 OLSON MEMORIAL HIGHWAY, SUITE 245
GOLDEN VALLEY
MN
55422
US
|
Family ID: |
40130999 |
Appl. No.: |
11/762194 |
Filed: |
June 13, 2007 |
Current U.S.
Class: |
24/68CD |
Current CPC
Class: |
Y10T 24/2175 20150115;
B60P 7/083 20130101; A44B 11/125 20130101 |
Class at
Publication: |
24/68CD |
International
Class: |
A44B 11/00 20060101
A44B011/00 |
Claims
1. A strap fastener comprising: a frame includes a plurality of
grooves; a handle; a reel inserted through the frame and the handle
so that a strap can be reeled when the reel is rotated; a plurality
of bushings, with each of the bushings adapted to insert through
one of the grooves, with the bushings connected to the frame for
protecting the reel from being clamped by the frame and the handle;
two ratchet wheels connected to the reel; a first detent movable on
the frame for engagement with the ratchet wheels; and a second
detent movable on the handle for engagement with the ratchet
wheels.
2. The strap fastener according to claim 1 wherein the plurality of
grooves are arcuate, with each of said grooves adapted to receive
one of the bushings, with the bushing including a ridge contoured
compliment to the groove and adapted to insert therethrough.
3. The strap fastener according to claim 2 wherein the frame
includes at least two grooves.
4. The strap fastener according to claim 2 wherein the each of the
bushings includes an integrally formed flange adapted to abut
against the frame.
5. A strap fastener comprising: a frame includes a plurality of
orifices; a handle; a reel inserted through the frame and the
handle so that a strap can be reeled when the reel is rotated; a
plurality of fasteners, with each of the fasteners adapted to
insert through one of the orifices, with the fasteners connected to
the frame for protecting the reel from being clamped by the frame
and the handle; two ratchet wheels connected to the reel; a first
detent movable on the frame for engagement with the ratchet wheels;
and a second detent movable on the handle for engagement with the
ratchet wheels.
6. The strap fastener according to claim 5 wherein the plurality of
orifices are circular, with each of the orifices adapted to receive
one of the fasteners, with the fastener including a pin contoured
complement to the said orifice and adapted to insert
therethrough.
7. The strap fastener according to claim 5 wherein the plurality of
orifices are non-circular, with each of the orifices adapted to
receive one of the fasteners, with the fastener including a pin
contoured complement to the said orifice and adapted to insert
therethrough.
8. The strap fastener according to claim 7 wherein the orifices are
polygonal.
9. The strap fastener according to claim 7 wherein the orifices are
quadrilateral.
10. The strap fastener according to claim 5 wherein the frame
includes at least four orifices.
11. The strap fastener according to claim 7 wherein the frame
includes at least four orifices.
12. The strap fastener according to claim 5 wherein the each of the
pins includes an integrally formed cap adapted to abut against the
frame.
13. The strap fastener according to claim 7 wherein the each of the
pins includes an integrally formed cap adapted to abut against the
frame.
Description
BACKGROUND OF INVENTION
[0001] 1. Field of Invention
[0002] The present invention relates to a strap fastener.
[0003] 2. Related Prior Art
[0004] Taiwanese Patent Publication No. 225765 discloses a
conventional fastener. The fastener includes a reel 4, a first
handle 1 connected to the reel 4, a second handle 2 connected to
the reel 4, two ratchet wheels 6 connected to the reel 4, a first
spring-loaded detent 3 located on the first handle 1 and a second
spring-loaded detent 5 located on the second handle 2. A first
strap B is connected to the first handle 1 while a second strap B
is connected to the reel 4. The first handle 1 includes two walls
each including a first arched edge, a second arched edge and a
shoulder 12 between the first and second arched edges. The second
handle 2 includes two cams. To fasten the straps B, the second
handle 2 is pivoted from the first handle 1. The pivoting is
limited by the second spring-loaded detent 5 against the shoulders
12 of the first handle 1. To loosen the straps B, the second
spring-loaded detent 5 is moved onto the second arched edges of the
first handle 1 and therefore kept from the ratchet wheels 6 while
the first spring-loaded detent 3 is disengaged from the ratchet
wheels 6 by the cams of the second handle 2. However, it is
difficult to reel in the second strap B. Referring to FIG. 12 of
the drawings of the present application, the second arched edges of
the first handle 1 are pushed by the second spring-loaded detent 5
while the cams of the second handle 2 are pushed by the first
spring-loaded detent 3 so that the reel 4 is "handcuffed" by the
handles 1 and 2.
[0005] The present invention is therefore intended to obviate or at
least alleviate the problems encountered in prior art.
SUMMARY OF INVENTION
[0006] According to the present invention, a strap fastener
includes a frame, a handle and a reel inserted through the frame
and handle so that a strap can be reeled when the reel is rotated.
A plurality of bushings are inserted in a plurality of grooves
defined by the frame for protecting the reel from the handle or the
frame. Two ratchet wheels are connected to the reel. A first detent
is movable on the frame for engagement with the ratchet wheels. A
second detent is movable on the handle for engagement with the
ratchet wheels.
[0007] In another aspect of the present invention, a plurality of
fasteners may be utilized to replace the plurality of bushings and
a plurality of orifices may be defined for receiving the plurality
of fasteners.
[0008] The primary advantage of the fastener according to the
present invention is free reeling of the strap since the protective
units keep the reel from the handle or the frame.
[0009] Other advantages and features of the present invention will
be apparent from the following description referring to the
drawings.
BRIEF DESCRIPTION OF DRAWINGS
[0010] For the present disclosure to be easily understood and
readily practiced, the present disclosure will be described for the
purpose of illustration not limitation, in conjunction with the
following figures, wherein;
[0011] FIG. 1 is a perspective view of a strap fastener according
to the first embodiment of the present invention.
[0012] FIG. 2 is an exploded view of the strap fastener shown in
FIG. 1.
[0013] FIG. 3 is a cross-sectional view of the strap fastener taken
along line 3-3 in FIG. 1.
[0014] FIG. 4 is a cross-sectional view of the strap fastener taken
along line 4-4 in FIG. 1.
[0015] FIG. 5 is a partial, enlarged view of the strap fastener
shown in FIG. 4.
[0016] FIG. 6 is a partial, enlarged view similar to FIG. 5, with
the strap fastener in another position.
[0017] FIG. 7 is a perspective view of a fastener according to the
second embodiment of the present invention.
[0018] FIG. 8 is an exploded view of the strap fastener shown in
FIG. 7.
[0019] FIG. 9 is a cross-sectional view of the strap fastener taken
along line 9-9 in FIG. 7.
[0020] FIG. 10 is a cross-sectional view of the strap fastener
taken along line 10-10 in FIG. 7.
[0021] FIG. 11 is a perspective view of a strap fastener according
to the third embodiment of the present invention.
[0022] FIG. 12 is a fragmentary, side view of a conventional strap
fastener.
DETAILED DESCRIPTION OF EMBODIMENTS
[0023] Referring to the FIGS. 1 through 6, there is shown a strap
fastener according to a first embodiment of the present
invention.
[0024] The strap fastener includes a frame 10, a cross bar 11 for
receiving a strap, a reel 12 for receiving another strap, two
ratchet wheels 13, a handle 20, a plurality of bushings 30, a first
detent 14 and a second detent 22.
[0025] The frame 10 includes two oppositely positioned walls. Each
of the walls of the frame 10 includes an aperture 102 defined in an
end, two arcuate grooves 104 disposed opposite one another about
the periphery of the aperture 102, a first 101 and a second arched
edges 106 at the end, a cutout 103 formed at the perimeter of the
second arched edge 106, a shoulder 108 between the arched edges 101
and 106.
[0026] The handle 20 includes two oppositely positioned walls and a
grip 21 between the walls. Each of the walls of the handle 20
includes a cam 202 formed at an end, a slot 203 therein and a boss
204 which has a portion interconnecting with the perimeter of the
slot 203. An aperture 201 is defined in each of the cams 202.
[0027] The plurality of bushings 30 each includes a ridge 301
contoured to compliment the groove 104 and adapted to insert
therethrough, a flange 303 integrally formed thereof being
abuttable with the frame 10 so as to retain the ridge 301 in the
slot 104. In this embodiment, there are two bushings 30 disposed on
each wall of the frame 10.
[0028] The reel 12 is rotationally inserted in the apertures 201 of
the handle 20, the bushings 30 and the apertures 102 of the frame
10.
[0029] Each of the ratchet wheels 13 includes ratchets 131. The
ratchet wheels 13 are non-rotationally connected to the reel
12.
[0030] The first detent 14 includes two fins 141 formed as two
extremities and each fin 141 is adapted to insert through a slot
107 defined in each wall of the frame 10 for engagement with the
ratchets 131 of the ratchet wheels 13. A spring is compressed
between the first detent 14 and a tab raised from the floor of the
frame 10 for keeping the fins 141 engaged with the ratchets
131.
[0031] The second detent 22 includes two fins 221 formed as two
extremities and each fin 221 is adapted to insert through the slot
203 defined in each wall of the handle 20 for engagement with the
ratchets 131 of the ratchet wheels 13. The second detent 22
includes a grip 222 thereon and an aperture 223 therein.
[0032] An elastic element 23 is provided between the second detent
22 and a portion of the handle 20 for keeping the fins 221 engaged
with the ratchets 131. The elastic element 23 is a torque spring
with a helical portion, a first end extending from the helical
portion and a second end extending from the helical portion. The
helical portion of the spring 23 is mounted on the boss 204 of one
of the walls of the handle 20. The first end of the spring 23 is
located against the wall of the handle 20. The second end of the
spring 23 is inserted through the aperture 223 of the second detent
22. As best seen from FIG. 6, the fins 221 of the second detent 22
are received by the corresponding cutouts 103, the fins 141 of the
first detent 14 are pushed away from the corresponding apertures
102. The reel 12 is thus freely rotatable for a user to carry out
reeling or unreeling act. In this embodiment, the shear force
applied by the fins 141 of the first detent 14 is transmitted to
the bushings 30. Thus the reel 12 is not clamped by the handle 20
and the frame 10 and therefore can easily be rotated.
[0033] Referring to FIGS. 7 through 10, there is shown a strap
fastener according to a second embodiment of the present invention.
The second embodiment is similar to the first embodiment but
includes four orifices 105 defined on each wall of the frame 10 and
disposed about the periphery of the aperture 102. Each orifice 105
is adapted to receive a fastener 31 which includes a pin 311 and a
cap 313. In this embodiment, the pin 311 is cylindrical in shape
and contoured compliment to the orifice 105 such that the pin can
insert therethrough. In addition, the cap 313 is abuttable against
the frame 10 such that the pin 311 is retained in the orifice 105
and the fastener 31 is not rotatable relative to the frame 10.
[0034] Referring to FIG. 11, a third embodiment is similar to the
second embodiment but the fasteners 31 are replaced with fasteners
32 which include a pin 321 having a polygonal shape and a cap 323.
Preferably, the pin 321 is quadrilateral in shape. In addition, the
orifice 109 is contoured compliment to the pin 321.
[0035] The strap fastener according to the present invention
exhibits advantages. Firstly, the reeling out is easy since the
bushings 30 and the fasteners 31, 32 are provided to keep the reel
12 from the handle 20.
[0036] Secondly, the reeling out is easy since the bushing 30 and
the fasteners 31, 32 are provided to keep the reel 12 from the
frame 10.
[0037] The present invention has been described via the detailed
illustration of the embodiments. Those skilled in the art can
derive variations from the embodiments without departing from the
scope of the present invention. Therefore, the embodiments shall
not limit the scope of the present invention defined in the
claims.
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