U.S. patent application number 12/618872 was filed with the patent office on 2010-11-04 for tie down apparatus.
Invention is credited to Chin-Sung Huang.
Application Number | 20100275420 12/618872 |
Document ID | / |
Family ID | 43029288 |
Filed Date | 2010-11-04 |
United States Patent
Application |
20100275420 |
Kind Code |
A1 |
Huang; Chin-Sung |
November 4, 2010 |
Tie Down Apparatus
Abstract
A tie down apparatus comprising a base, a biasing element, a
torsion spring, and a shaft, wherein the base is die cast or
plastic rejection molded and includes two side plates disposed on
two sides thereof respectively, and between one ends of the side
plates is mounted an engaging pillar, between another ends of the
side plates is fixed a retaining member, between middle sections of
the side plates is secured an abutting shank, the biasing element
matches with the torsion spring and is axially fixed between the
two side plates of the base by using the shaft, and is die cast or
plastic rejection molded, and includes a contacting portion having
a pressing piece extending from one side thereof, thereby cooling
quickly after die casting or plastic rejection molding process to
lower production time and cost, and enabling to decrease production
material and cost.
Inventors: |
Huang; Chin-Sung; (Puxin
Shiang, TW) |
Correspondence
Address: |
KAMRATH & ASSOCIATES P.A.
4825 OLSON MEMORIAL HIGHWAY, SUITE 245
GOLDEN VALLEY
MN
55422
US
|
Family ID: |
43029288 |
Appl. No.: |
12/618872 |
Filed: |
November 16, 2009 |
Current U.S.
Class: |
24/68CD |
Current CPC
Class: |
B60P 7/0838 20130101;
Y10T 24/2175 20150115 |
Class at
Publication: |
24/68CD |
International
Class: |
A44B 11/16 20060101
A44B011/16 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 29, 2009 |
TW |
098207201 |
Claims
1. A tie down apparatus comprising: a base, a biasing element, a
torsion spring, and a shaft, wherein the base is die cast or
plastic rejection molded and includes two side plates disposed on
two sides thereof respectively, and between one ends of the side
plates is mounted an engaging pillar, between another ends of the
side plates is fixed a retaining member, between middle sections of
the side plates is secured an abutting shank, the biasing element
matches with the torsion spring and is axially fixed between the
two side plates of the base by using the shaft, and is die cast or
plastic rejection molded, and includes a contacting portion having
a pressing piece extending from one side thereof; wherein the
engaging pillar of the base is hollow.
2. A tie down apparatus comprising: a base, a biasing element, a
torsion spring, and a shaft, wherein the base is die cast or
plastic rejection molded and includes two side plates disposed on
two sides thereof respectively, and between one ends of the side
plates is mounted an engaging pillar, between another ends of the
side plates is fixed a retaining member, between middle sections of
the side plates is secured an abutting shank, the biasing element
matches with the torsion spring and is axially fixed between the
two side plates of the base by using the shaft, and is die cast or
plastic rejection molded, and includes a contacting portion having
a pressing piece extending from one side thereof; wherein each side
plate of the base is provided a recess thereon.
3. The tie down apparatus as claimed in claim 2, wherein the recess
is provided on an outer side of the side plate.
4. A tie down apparatus comprising: a base, a biasing element, a
torsion spring, and a shaft, wherein the base is die cast or
plastic rejection molded and includes two side plates disposed on
two sides thereof respectively, and between one ends of the side
plates is mounted an engaging pillar, between another ends of the
side plates is fixed a retaining member, between middle sections of
the side plates is secured an abutting shank, the biasing element
matches with the torsion spring and is axially fixed between the
two side plates of the base by using the shaft, and is die cast or
plastic rejection molded, and includes a contacting portion having
a pressing piece extending from one side thereof; wherein the
contacting portion of the biasing element has two bores.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to tying apparatus, and more
particularly to a tie down apparatus that is capable of tying an
object tightly and being release easily.
[0003] 2. Description of the Prior Art
[0004] A conventional tie down apparatus is used to wrap a strap
for tying objects so as to prevent the objects from falling from
the truck during transporting process.
[0005] Referring to FIGS. 1 and 2, a conventional tie down
apparatus comprises a base 10, a biasing element 20, a torsion
spring 30, and a shaft 40, wherein the base 10 is die cast or
plastic rejection molded, and includes two side plates 101 disposed
on two sides thereof respectively, and between one ends of the side
plates 101 is defined an engaging pillar 102, between another ends
of the side plates 101 is mounted a retaining pillar 103, and
between middle sections thereof is fixed an abutting shank 104, the
side plates 101 include two axial holes 105 formed between the
engaging pillar 102 and the abutting shank 104 individually; the
biasing element 20 is die cast or plastic rejection molded as well
and includes a contacting portion 201 having an aperture 202, and a
pressing piece 203 extending from one side of the contacting
portion 201.
[0006] In assembly, the biasing element 20 and the torsion spring
30 are fixed between the two side plates 101 of the base 10, and
the shaft 40 is inserted to the axial holes 105 of the side plates
101, the aperture 202 of the biasing element 20, and a central
orifice of the torsion spring 30 so that the torsion spring 30
abuts between the biasing element 20 and the shaft 104 of the base
10, and the contacting portion 201 of the biasing element 20
retains to the engaging pillar 102 of the base 10 by using the
torsion spring 30 to wrap the strap tightly.
[0007] However, such a conventional tie down apparatus has the
following disadvantages:
[0008] 1. The side plates 101 of the base 10, the engaging pillar
102 and the contacting portion 201 of the biasing element 20 are
solid, thus prolonging cooling time after die casting or plastic
rejection molding process to increase production time.
[0009] 2. The side plates 101 of the base 10, the engaging pillar
102 and the contacting portion 201 of the biasing element 20 are
solid, increasing material and the material cost.
[0010] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages.
SUMMARY OF THE INVENTION
[0011] The primary object of the present invention is to provide a
tie down apparatus that the side plates of the base include two
recesses formed thereon individually, the engaging pillar is
hollow, and the contacting portion of the biasing element includes
the bores, thereby cooling quickly after die casting or plastic
rejection molding process to lower production time and cost.
[0012] Another object of the present invention is to provide a tie
down apparatus that the two side plates of the base include two
recesses formed thereon individually, the engaging pillar is
hollow, and the contacting portion of the biasing element includes
the bores, thus enabling to decrease production material and
cost.
[0013] A tie down apparatus in accordance with a preferred
embodiment of the present invention comprises:
a base, a biasing element, a torsion spring, and a shaft, wherein
the base is die cast or plastic rejection molded and includes two
side plates disposed on two sides thereof respectively, and between
one ends of the side plates is mounted an engaging pillar, between
another ends of the side plates is fixed a retaining member,
between middle sections of the side plates is secured an abutting
shank, the biasing element matches with the torsion spring and is
axially fixed between the two side plates of the base by using the
shaft, and is die cast or plastic rejection molded, and includes a
contacting portion having a pressing piece extending from one side
thereof; such that the shaft is used to axially fix the biasing
element and the torsion spring between the two side plates of the
base so that the contacting portion of the biasing element retains
to the engaging pillar of the base, tying an object tightly.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a perspective view showing the exploded components
of a conventional tie down apparatus;
[0015] FIG. 2 is a cross sectional view showing the assembly of the
conventional tie down apparatus;
[0016] FIG. 3 is a perspective view showing the exploded components
of a tie down apparatus according to a preferred embodiment of the
present invention;
[0017] FIG. 4 is a perspective view showing the assembly of the tie
down apparatus according to the preferred embodiment of the present
invention;
[0018] FIG. 5 is a cross sectional view showing the assembly of the
tie down apparatus according to the preferred embodiment of the
present invention;
[0019] FIG. 6 is a cross sectional view showing the operation of
the conventional tie down apparatus according to the preferred
embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0020] 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.
[0021] Referring to FIGS. 3-5, a tie down apparatus in accordance
with a preferred embodiment of the present invention comprises a
base 1, a biasing element 2, a torsion spring 3, and a shaft 4,
wherein the base 1 is die cast or plastic rejection molded and
includes two side plates 11 disposed on two sides thereof
respectively, and each side plate 11 is provided a recess 111
disposed on an outer side thereof, among one ends of the side
plates 11 and the recess 111 is mounted a hollow engaging pillar
12, and between another ends of the side plates 11 is fixed a
retaining member 13, between middle sections of the side plates 11
is secured an abutting shank 14 having an indentation 141, and
between the engaging pillar 12 and the abutting shank 14 of the
side plates 11 is formed an axial hole 15, the engaging pillar 12
includes an elongated teeth member 121 arranged thereon, the
biasing element 2 is die cast or plastic rejection molded as well,
and includes a contacting portion 21 having an aperture 211, two
bores 212, lock teeth 213 arranged thereon, and a pressing piece 22
extending from one side thereof.
[0022] In assembly, the biasing element 2 and the torsion spring 3
are placed between the side plates 11 of the base 1, and the shaft
4 is inserted to the axial hole 15 of the side plates 11, the
aperture 211 of the biasing element 2, and a central orifice of the
torsion spring 3 so that the torsion spring 3 is abutted between a
bottom surface of the pressing piece 22 of the biasing element 2
and the indentation 141 of the abutting shank 14 of the base 1,
such that the contacting portion 21 of the biasing element 2
retains to the engaging pillar 12 of the base 1 by using the
torsion spring 3.
[0023] As shown in FIG. 6, a strap 5 is fixed to the engaging
pillar 12 of the base 1, and the pressing piece 22 of the biasing
element 2 is pressed to rotate the biasing element 2 along the
aperture 211, such that the contacting portion 21 of the biasing
element 2 disengages from the engaging pillar 12 of the base 1 to
insert another end of the strap 5, and then the pressing piece 22
is released to return original position by ways of the torsion
spring 3, hence another end of the strap 5 is retained between the
elongated teeth member 121 of the engaging pillar 12 of the base 1
and the lock teeth 213 of the contacting portion 21 of the biasing
element 2, thereafter another end of strap 5 is pulled to tie an
object tightly.
[0024] Thereby, the tie down apparatus of the present invention has
the following advantages:
[0025] 1. Due to the side plates 11 of the base 1 include two
recesses 111 formed thereon individually, the engaging pillar 12 is
hollow, and the contacting portion 21 of the biasing element 2
includes the bores 212, thereby cooling quickly after die casting
or plastic rejection molding process to lower production time and
cost.
[0026] 2. Because the two side plates 11 of the base 1 include two
recesses 111 formed thereon individually, the engaging pillar 12 is
hollow, and the contacting portion 21 of the biasing element 2
includes the bores 212, thus enabling to decrease production
material and cost.
[0027] 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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