JPS5828765Y2 - load fasteners - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cargo fastening device used for securing cargo to a loading platform, a boat platform, etc.

Conventionally, as a type of load tightening device, a pair of hooks are connected to the base of a lever via a connecting member, and the distance between the pair of hooks is expanded or contracted by operating the lever to tighten or release the load. There is something.

By the way, with this type of load tightening device, the distance between the pair of hooks is set to a fixed dimension when expanded, and there is no flexibility, so there is a problem that the load tightening device may peel over and tighten the load too much or not tighten it enough when tightening the load. .

The present invention has been developed in view of the above-mentioned problems of the conventional technology, and includes an elastic means such as a compression coil spring incorporated into one of the connecting members that connect the lever and the pair of hooks, thereby increasing the length of the connecting member. The purpose of the present invention is to provide a load fastening tool which can be adjusted to expand and contract within a certain range, and has flexibility in the distance between a pair of hooks that can be pressed during expansion and contraction.

In addition, the present invention provides the load tightening device with a simple overall structure that can be easily and inexpensively manufactured, and also maintains a constant amount of compression of the coil spring so that the compression coil spring is not damaged during use of the load tightening device. The purpose of the present invention is to provide an expansion/contraction means configured to limit the amount of expansion and contraction.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Reference numeral 1 denotes a lever, and a first connecting fitting 2 and a second connecting fitting 3 are connected to different positions of the base 1d of the lever 1, respectively.

The first connecting fitting 2 includes a telescopic means 4 and a U-shaped fitting 10a1.
The chain 10 and the seventeenth link 11 are connected in sequence.

On the other hand, the second connecting fitting 3 includes a ring 12.13 and a 27th
The screws 14 are connected in sequence.

The lever 1 has a handle 1a and a base 1 continuous to the handle 1a.
d, and the base 1d is composed of the opposing side plate 1b.
, 1c.

Further, the first connecting fitting 2 is formed into a roughly U-shape with a base portion 2a and opposing side plates 2b and 2c connected to the base portion 2a,
Insert the opposing side plates 1b and 1c of the lever 1 between the opposing side plates 2b and 2c, and connect the tip of the side plate 2b of the first connecting fitting 2 and the tip of the opposing side plate 1b of the lever with a pin. At 15a, the tip of the side plate 2C of the first connecting fitting and the front end of the side plate 1C of the lever opposite thereto are connected to the pin 1.
5b, and these pins 15a and 15b are used as fulcrums so that the lever 1 can rotate relative to the first connecting fitting 2.

Also, when tightening the front, the handle part 1a of this lever is connected to the first connecting fitting 2.
When the lever is pushed down in the direction of the base 2a, the side plate 1b of the lever
, 1c is the side plate 2b of the first connecting fitting.

2C, and the side plates 1b, 1c and the handle 1a.
The lower surface near the boundary with the first connecting member contacts the upper surface of the base portion 2a of the first connecting fitting, and the handle portion 1a extends along the first connecting member 2.

On the other hand, the second connecting fitting 3 is composed of a head 3a and a plate-shaped part 3b connected to the head 3a, and the plate-shaped part 3b is inserted between the opposing side plates 1b and 1C of the lever 1, and the plate-shaped part 3
Each side plate 1b of the lever 1 faces the tip of b.
, 1c are connected to a pin 16 at a predetermined position near the handle portion of each of them so as to be rotatable.

The pin 16 that connects the second connecting metal fitting 3 and the lever 1 is inserted into the first connecting metal fitting 20 by pushing down the handle 1a of the lever toward the first connecting member 20 during front tightening. A pair of pins 15a and 15b that connect the first connecting fitting 2 and the lever 1 when brought into contact with the upper surface of the base 2a.
and the base 2a of the first connecting fitting, which coincide with each other.
Regarding a plane including the center of the through hole 2a-1 provided in the
It is located on the opposite side to the upper surface of the base 2a of the first connecting fitting and near the plane.

By positioning the pin 16 in this way, when tension is applied to the chain 10 and rings 12, 13 during front tightening,
Always tighten lever 1 in the forward direction, that is, move lever 1 to the first position.
It rotates in the direction of pressing against the base 2a of the connecting fitting.

The expansion/contraction means 4 includes a compression coil spring 17 having an irregularly shaped compression coil spring, that is, a rectangular cross-section of a wire material, and a first connecting plate 5 formed in a long plate shape and a pair of second connecting plates inside the coil spring 17. 7 and 8 are penetrated from different directions.

The first connecting plate 5 and the second connecting plate 5; 7 and 8 are each formed into a long plate shape, and the pair of second connecting plates 7 and 8 sandwich one first connecting plate 5 from both sides and are parallel to it. It is arranged so that it can be moved.

Further, the first connecting plate 5 is provided with a collar 5C on both sides in the width direction near one end 5a thereof, and an inner 5 cm1 of the collar 5C is in contact with one end 17b of the coil spring 17.

On the other hand, one end 7a sBa of the pair of second connecting plates 7.8
Flanges 7c, 8c are provided on both sides in the width direction, and the inner sides 7cm1, 8cm1 of the flanges 7c, 8c are in contact with the other end 17c of the coil spring 17.

In other words, the coil spring 17 is held by the collars 5c, 7c, 8c of the first and second connecting plates 5, 7.8.

The end 5a of the first connecting plate 5 is provided with a long hole 18 extending in the axial direction of the coil spring 17, while the ends 7b and 8b of the pair of second connecting plates 7 and 8 are provided with the long hole 18. A short hole 19a is located opposite to 18.

19b is provided.

These long holes 18 and short holes 19a and 19b
A shaft 9 having approximately the same diameter as the short holes 19a and 19b is fitted into the inside, and both ends 9a and 9b of this shaft 9 are connected to the U-shaped fitting 10.
They are fixed to both ends of a.

On the other hand, the end portion 5b of the first connecting plate is formed into a bolt shape, and this end portion 5b is inserted from the outside into the through hole 2a-1 provided in the base 2a of the first connecting metal fitting 2. Natsuto 6
It is fixed by

The load fastener having the above configuration is operated and used as follows.

When starting the line, first rotate the lever 1 and press the handle 1a.
is placed closer to the second connecting member 21 than the first connecting member 20, and the first connecting fitting 2 and the second connecting fitting 3 are separated from each other.

Next, the 17th hook 11 and the 27th hook 14 are respectively hooked onto two hooks (not shown) that should be used as row lines.

At this time, if the distance between the first hook 11 and the second hook 14 is separated, the first connecting plate 5 and the second hook of the extensible means 4 can be separated.
The connecting plates 6 and 7 are pulled in opposite directions, and the coil spring 17 is pulled into each collar 5 depending on the strength of the pulling force.
Compress by a certain amount by c, 7c, and 8c.

Therefore, the distance between the seventeenth claw 11 and the twenty-seventh claw 14 is automatically adjusted depending on the strength of the tensile force.

Next, the handle portion 1a of the lever 1 is rotated 1 to 4 along the first connecting member 20 so as to approach the first connecting member.

The coil spring 17 of the expansion/contraction means 4 is further compressed by a certain amount by this line.

When the coil spring 17 of the expansion/contraction means 4 is further compressed due to a large tension being exerted on the load tightening tool after the line has passed, the shaft 9 of the expansion/contraction means 4 comes into contact with the outer end surface of the elongated hole 18.
Coil spring 17 is no longer compressed.

In the present invention, the coil spring 17 can be made of a wire with a round cross section, but if a coil spring with a rectangular wire cross section is used as the coil spring in the above embodiment, the outer diameter of the coil spring 17 can be reduced. Since the cross-sectional area of the wire can be increased, and therefore the spring force can be increased, the size of the coil spring can be reduced.

In addition, the inner surfaces 5c-1 and 7c of the flange 5C97c and 8c
-1 and 8c-1, the area of the spring seat of the coil spring 17 that comes into contact with the coil spring 17 can be made larger than that of a normal coil spring with a round wire cross section.
7 has good durability.

Further, in the above embodiment, the end portions 7b of the second connecting plates 7, 8,
8b is connected to the U-shaped fitting 10a via the shaft 9, but the shaft 9 in the present invention is essentially moved along the long hole of the other connecting plate together with the connecting plate having the short hole. It suffices if the structure is transparent.

Therefore, one shaft 9 that directly connects the ends 7b and 8b of the first connecting plates 7 and 8 to the connecting member corresponding to the U-shaped fitting 10a may be fixed to the short holes 19a and 18a.

Further, in the above embodiment, the long hole 18 is provided in the first connecting plate 5 and the short hole is provided in the pair of second connecting plates 7 and 8, but in contrast to this, the first connecting plate 5 is provided with the short hole 18. It is also possible to have a structure in which elongated holes are provided in the second connecting plates 7 and 8.

Further, in the above embodiment, the telescoping means 4 is incorporated into the connecting member between the lever 1 and the first hook 11, but instead, it may be incorporated into the connecting member between the lever 1 and the second hook 14. .

As detailed in the above-mentioned embodiments, the load tightening device according to the present invention has the following features:
A part of the connecting member is made up of a telescoping means so that the distance between the pair of hooks can be automatically fine-adjusted, which improves workability during line line work, and also prevents excessive work in line line conditions. Even when a tensile force is applied, the tensile force is absorbed, so there is no damage to the line or the load.

In addition, the means for expanding and contracting the load tightening device is such that one connecting plate is provided with a long hole and the other connecting plate is provided with a short hole, and a shaft that fits tightly into the short hole is fitted into these holes. Since the relative movement distance is limited within a certain limit, and the amount of compression of the coil spring 1 nong is limited within a certain limit, contact wear of adjacent windings of the coil spring and buckling of the coil spring are prevented, and the expansion and contraction means In addition to preventing damage to
It is possible to reliably guarantee the maximum length of the distance between the pair of hooks of the load fastener.

In addition, the expansion/contraction means of the cargo fastening device has a simple structure in which the main members, the first and second connecting plates, are plate-shaped bodies equipped with a spring seat and a flange that acts with the spring seat. This can be manufactured, for example, by press working.

Therefore, this telescoping means can be manufactured easily and inexpensively, and can reliably achieve its intended purpose as a cargo fastener.

[Brief explanation of the drawing]

1 and 2 are a front view and a bottom view of a load fastening device according to an embodiment of the present invention, and FIGS. 3 and 4 are an enlarged partial cross-sectional front view and a partial cross-section of the expansion and contraction means in FIGS. 1 and 2, respectively. Enlarged front view,
FIG. 5 is a sectional view taken along the line V-■ in FIG. 3. 1... Lever, 1a... Handle, 1d... Base, 2
...first connecting fitting, 3...second connecting fitting, 4...
Expanding/contracting means, 5... first connecting plate, 7, 8... second connecting plate, 5c. 7c, 8c... Tsuba, 9... Shaft, 10a... U-shaped metal fitting, 10... Chain, 11... First hook,
12, 13...Ring, 14...Second hook, 17
...Coil spring, 18. ,, long hole, 19a,
19b--Short hole, 20--First connecting member, 21-
...Second connecting member.

Claims (3)

[Scope of utility model registration request] (1) In a load tightening device in which a pair of hooks are connected to the base of a lever via connecting members, and the distance between the pair of hooks is expanded or contracted by operating the lever to tighten or release the load. , at least one of the connecting members has an expandable means built into a part thereof, and the expandable means 4 is a first connecting member in the form of a long plate having a collar 5c extending at or near one end 5a and protruding on both sides in the width direction. The plate 5 is inserted into the compression coil spring 17 from one side, and the inner 5 cm 1 of the collar 5c is brought into contact with one end 17b of the coil spring 17, and similarly, both sides in the width direction are inserted at or near one end 7a, 8a. A pair of long plate-shaped second connecting plates 7, 8 having flanges 7c, 8c protruding from each other are inserted into the coil spring 17 from the other side so as to sandwich the first connecting plate 5 and movable in parallel thereto. Inside of tsuba 7c and 8c 7cm1゜8cm1
is brought into contact with the other end 17c of the coil spring 17, and the other end 5b of the first connecting plate 5 or the other ends 7b, 8b of the second connecting plates 7, 8 are brought into contact with the lever itself 1 or the connecting member on the lever side. , or alternatively connected to the hook itself 11.14 or the connecting member on the hook side, furthermore, the first
The connecting plate 5 and the second connecting plates 7 and 8 are optionally provided with a long hole 18 and short holes 19a and 19b extending along the axial direction of the coil spring 17 at ends in the same direction and at opposing positions. On the other hand, these holes 18.19a and 19b have short holes 19a. A load tightening device characterized in that a shaft 9 is inserted which moves along the long hole 18 together with the open furnace plate on the side having the open furnace plate 19b and limits the amount of compression of the coil spring 17. (2) One end of the connecting plate on the side having the short holes 19a, 19b is connected to the hole 18.19a of the first connecting plate 5 and the second connecting plate 7, 8.
Utility model registration claim 1, characterized in that the lever is alternatively connected to the lever itself or a connecting member on the lever side, or to the hook itself or a connecting member on the hook side via a shaft 9 inserted into the lever 19b. Load fasteners listed. (3) Utility model registration claim 1, characterized in that the compression coil spring 17 is formed from a wire rod with a rectangular cross section.
Load fasteners as described in section.