JP2000161445A - Twin cam buckle and lashing belt system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cam buckle and a lashing belt system having proper workability and high durability. SOLUTION: This cam buckle integrally connects two cam buckle unit bodies with a movable direction made reverse and the direction made an outer side together, provides a gap 28 passable by a belt between base plates 24 between two said unit bodies, and is composed of one belt inserted into twin cam buckles and both the unit bodies, and hooking means provided on both the ends of the belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel double cam buckle and a lashing belt system using the same.

[0002]

2. Description of the Related Art In recent years, with the expansion of distribution mechanisms and the development of transportation technology, the amount of cargo transported has also increased dramatically, and the means of transportation have been advanced and diversified. Along with this, means for safe and secure holding and fixing during transportation of merchandise cargo is required, and a lashing belt system has been widely used as the most advanced tool for that purpose. The lashing belt system is, for example, a belt system that fixes a cargo or the like using a hook attached to a tilt of a truck bed or a corresponding track rail attached to a route van.

One of the most standard lashing belt systems uses a ratchet buckle as shown in FIG.
A fixed length belt 3 having a sewn loop in FIG. 2 is fixedly attached to the ratchet buckle 1, and another belt 5 having a latching means 4 such as a hook at one end is connected to the spreader bar of the ratchet buckle 1. And mounted as a whole to form a single belt. As shown in FIG. 2, this lashing belt system fastens so-called cargoes, for example, to prevent the cargo loaded on the truck bed from collapsing and moving. Then, pull out the belt 5 to take up the slack of the necessary and sufficient length, hook the hooks at both ends of the lashing belt system at predetermined positions (in FIG. 2, hooks under the tilt of the truck bed), and then ratchet buckle The handle 5 is used to rotate the ratchet to wind the belt 5 around a ratchet buckle and fix the load.

Another lashing belt system is a lashing belt system using a cam buckle. As shown in FIG. 3, the lashing belt system uses a so-called cam buckle, and a fixed length fixed belt 8 having a hooking means 7 such as a hook at one end is fixedly attached to the cam buckle 9, Another belt 11 having a hooking means 10 such as a hook at one end,
The end on which the hook 10 is attached is inserted into the cam buckle 9 so that the side where the hook 10 is not attached is directed from the immovable direction side of the cam buckle to the movable direction side, and the end on which the hook 10 is attached is folded back in a U-shape. The lashing belt system of this type also has basically the same application and operating method as the lashing belt system described above, except that the belt 1
1 free end side (the side to which the hook is not attached) 12
In that the belt is tightened by pulling the belt.

While these lashing belt systems are much more convenient, efficient and effective than conventional lobe-only packing, they still suffer from a number of disadvantages.
The first disadvantage is that the positions of the ratchet buckle 1 and the cam buckle 9 from the hooks 2 and 7 are constant because the lengths of the belts 3 and 8 on the fixed side are constant and not variable. Since the size, shape, mode, etc. of the place to be loaded or stored and the cargo to be fastened and fixed are very diverse, the lashing belt system can suitably cope with such diversity. There is a problem that the packing work is limited and it is difficult to work.

Further, since the length of the fixed side belts 3 and 8 is constant and not variable, a load is always applied to the same portion of the fixed side belt, so that the belt is greatly worn and the durability is deteriorated. In addition, since the variable side belt also concentrates on a relatively short area and comes into contact with the ratchet buckle or the cam buckle, there is also a problem that, similarly to the fixed side belt, wear is severe and the durability of the belt is deteriorated. . In a lashing belt system using a ratchet buckle, the weight of the ratchet buckle is very heavy, impairing the workability, and is also dangerous in some cases.
The present invention solves the above-mentioned problems and provides a cam buckle that enables a lashing belt system with extremely high workability and high durability. Further, a lashing belt system with extremely high workability and high durability is provided. The purpose is to provide itself.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a cam buckle having a movable direction opposite to that of a cam buckle.
The two cam buckle units are integrally connected with the movable directions both outward, and a gap through which the belt can pass is provided between the base plates between the two cam buckle units to form a two-unit configuration. The cam buckle unit is formed integrally with the cam lever and has a buckle tooth, a cam shaft for rotatably supporting the cam wheel, a base plate, a spring means for constantly biasing the cam wheel in a fixed direction, a cam. A conventionally known structure including a shaft and a frame supporting the base plate may be used.

Further, using the above-mentioned cam buckle,
A lashing belt system was constituted by a continuous cam buckle, one belt inserted through both units of the double cam buckle, and hook means provided at both ends of the belt. The hook means may be conventional means such as drawing loop sewing, narrow hooks, pallet hooks, one-pieces. Loop portion of the belt (intermediate portion between both cam buckle units)
The puller which has the means to fix to the belt is removable,
It is preferable to be movably attached because the work of tightening the load by pulling the loop portion of the belt becomes easy.

[0009]

According to the lashing belt system of the present invention, the position of the cam buckle with respect to the belt can be freely changed. The length of the two free end portions of the belt of the lashing belt system can be individually and independently adjusted to the appropriate length. The loading operation can be performed by a simple operation of simply pulling the loop portion of the belt, and the releasing operation can be performed by pressing at least one lever of the cam buckle to release the engagement of the belt.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings showing embodiments. Example 1 FIG. 4 is a perspective view of an embodiment of a dual cam buckle according to the present invention, and FIG. 5 is a diagram schematically showing a central longitudinal section of the dual cam buckle of FIG. In the figure, 21 is a cam wheel, 2
2 is a cam shaft, 23 is a cam lever, 24 is a base plate, 25 is a buckle tooth, 26 is a spring, and 27 is a frame, all of which are made of metal.

The spring 25 is inserted into the camshaft 21, one end is fixed to the cam lever 23, and the other end is fixed to the frame 27, and is mounted so as to constantly urge the cam teeth 25 so as to be pressed against the base plate 24. Cam wheel 21
Is connected integrally with the cam lever 23, and is always urged toward the base plate 24 toward the center of the cam shaft 22 by a spring 26 together with the cam lever 23. By pushing down the cam lever 23 toward the base plate 24 against the force of the spring 26, the buckle teeth 2
The gap between 5 and the base plate 24 can be enlarged. The frame 27 is formed integrally with the base plate 24, and the frame 27 rotatably supports the cam shaft 22.

The cam shaft 22 is a buckle tooth 25 of the cam wheel 21.
Are located behind the position where the belt is bitten between the base plate 24 and the base plate 24. Due to the positional relationship, when the belt moves forward, the cam wheel 21 rotates in the opposite direction to the base plate 24 and the buckle teeth 2 of the cam wheel 21 are rotated.
As the distance between the base plate 5 and the base plate 24 increases, the belt can easily move forward. When the belt moves inward, the buckle teeth 25 are hooked on the belt and cooperate with the base plate 24 to bite the belt and buckle teeth 25.
As the distance between the belt and the base plate 24 becomes narrower and the belt is pulled in the backward direction, the belt is more strongly bitten and harder to move. This cam buckle unit does not substantially differ from the structure of a conventionally known cam buckle.
The double cam buckle is provided with the two cam buckle unit bodies having the above-described configuration facing away from the frame 27 so that the tip of the cam lever 23 does not come into contact with the cam buckle 23 and is slightly spaced apart. A gap 28 through which the belt can pass is provided between the base plates 24, 24 of each cam buckle unit.

Embodiment 2 FIG. 6 is a diagram schematically showing a configuration of an embodiment of a lashing belt system using a double cam buckle according to Embodiment 1. A belt 29 made of one polyester fiber is routed from the gap 28 between the two base plates 24, 24 of the double cam buckle 30 through the space between the cam teeth 25 of one cam buckle unit and the base plate 24, and the tip of the belt 29 is connected to the other. Cam buckle unit cam teeth 25 and base plate 2
4 from the outside through the gap 28 between the two base plates 24, 24 to form a lashing belt system. Narrow hooks 31 are fixedly attached to both ends of the belt 29, respectively. This hook means may be another. The length of the belt 29 is not particularly limited. However, since the length of the finished belt of the lashing belt system cannot be easily changed, it is preferable that the belt has a suitable length according to the application.

In a lashing belt system using a cam buckle, the belt is usually tightened by grasping an appropriate portion of the belt itself and pulling the belt. However, it is convenient to provide a suitable belt puller detachably and movably on the belt. 32 is a handle. FIG. 7 is a perspective view of the tab 32. The handle 32 is formed by bending an iron bar having a diameter of 6 mm into a U-shape and attaching a rubber tube to one side to form a grip 33, and the other side 34 is provided with a gap 36 that allows the iron bar to slide freely.
Is opened and folded to form a sandwiching side 35. The leading end of the folded side 35 does not reach the middle side and has a predetermined space 37 therebetween. The handle 32 passes through the gap 37 between the sandwiched side 35 and the other side 34 via the space 37. In this state, the pull 32 moves freely with respect to the belt. To secure the pull for pulling the belt, the belt is further wound around the side 35 between the other side 34 two or three times while the belt 29 is passed through the gap 36 (see FIG. 8). This winding can be easily performed because the belt is flexible. In a state where the belt is wound, the puller 32 is fixed to the belt, and the belt is strongly pulled by pulling the grip 33. If you reverse the belt, you can pull it back 3
2 becomes freely movable with respect to the belt 29. Further, the puller 32 can be removed from the belt 29 by removing the belt 29 from the space 37 between the pullers 32 in the opposite direction to the mounting. After the pulling of the belt by the puller to tighten the load, the loop portion is in a floating state, so that the loop portion in the floating state can be fixed by hooking the puller on the tensioned portion of the belt. This handle is not essential and may be another means.

Referring to FIG. 6, a description will be given of a method of tightening the lashing belt system according to this embodiment. The belt 29 can be freely pulled out to the loop side in either cam buckle unit, but cannot be moved in the opposite direction unless the cam lever is loosened. First, depending on the cargo to be fixed and the place to be fixed, the cam buckle is moved to position the cam buckle relative to the entire belt and the approximate length of the lashing belt system, that is, both free ends extending from the cam buckle. Determine the length of the side belt.

Next, after the narrow hooks 31 and 31 are respectively hooked at predetermined stop positions, the loop portion of the belt is strongly pulled by the puller 32. The attachment of the pull 32 to the belt 29 and the winding of the belt are performed in advance. As a result, the belt between the narrow hooks 31 and 31 is narrowed and shortened, and the load is tightened and the cargo is fixed. In this state, the belt is pulled so as to move only in the direction in which it cannot move with respect to the cam buckle, so that the belt does not loosen, and the fixed state is reliably and stably maintained.
Pull the handle 32 with the narrow hook 31,
Hook somewhere on the belt between 31.

When unloading the cargo, the puller 32 is removed, and one or both cam levers of the cam buckle unit are pushed to release the engagement of the belt, and the belt is pulled out to the hook means side, thereby narrowing the narrow hook 31. ,
The distance between the hooks 31 is increased, and both hooks 31, 31 can be removed from the hooking positions, so that the packing can be released.

[0018]

The dual cam buckle of the present invention can be applied to a more suitable lashing belt system and the like, unlike the conventional ratchet buckle or single cam buckle. The lashing belt system of the present invention using the double cam buckle can easily move the position of the operated cam buckle to the most suitable place for work and fixed cargo, and the cam buckle is compared with the conventional ratchet buckle. It is extremely lightweight, and can be easily tightened by simply pulling the belt loop. Also, in the dual cam buckle of the present invention, the position of the cam buckle is not constant and moves,
Since the belt is not subjected to friction only at a specific portion, the damage of the belt is extremely reduced, and the durability is remarkably improved as compared with the conventional lashing belt system.

In a lashing belt system using a conventional cam buckle, the belt is generally folded and sewn in many cases in order to attach the belt to the cam buckle, but this sewing requires strength. Not easy. The lashing belt system of the present invention eliminates the need for sewing, which is advantageous in manufacturing.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a lashing belt system using a conventional ratchet buckle.

FIG. 2 is a diagram illustrating an example of a use state of a lashing belt system.

FIG. 3 is a diagram schematically showing a lashing belt system using a conventional cam buckle.

FIG. 4 is a perspective view of one embodiment of a cam buckle of the present invention.

FIG. 5 is a central longitudinal sectional view of the cam buckle of FIG. 4;

6 is a diagram schematically illustrating a lashing belt system of the present invention using the cam buckle of FIG.

FIG. 7 is a perspective view of a handle.

8 is a partial cross-sectional view when the puller of FIG. 7 is attached to a belt.

[Explanation of symbols]

 Reference Signs List 1 ratchet buckle 2,4 hook means 3,5 belt 6 handle 7,10 hook means 9 cam buckle 8,11,12 belt 21 cam wheel 22 cam shaft 23 cam lever 24 base plate 25 cam teeth 26 spring 27 frame 28 gap 29 belt 30 Cam buckle 31 Hook means 32 Pull 33 Grip 35 Folding side

Claims (4)

[Claims] The two cam buckle units are integrally connected with the movable direction being opposite and the movable directions being both outward, and a belt passes between a base plate between the two cam buckle units. A double cam buckle characterized by providing a possible gap. A cam buckle unit body integrally formed with the cam lever, the cam wheel having buckle teeth, a cam shaft rotatably supporting the cam wheel, a base plate, and a constant biasing of the cam wheel in a certain direction. 2. The double cam buckle according to claim 1, further comprising: a spring means for performing the operation; 3. A lashing belt, comprising: the double cam buckle according to claim 1, one belt inserted through both unit bodies of the double cam buckle, and hook means provided at both ends of the belt. system. 4. A lashing belt system according to claim 3, wherein a puller having means for fixing the belt to the belt loop portion is detachably and movably mounted.