JPH0666714U - Cushioning belt - Google Patents

Abstract

(57) [Summary] [Purpose] A cushioning belt that alleviates the impact load of a high-altitude worker when he or she falls. [Structure] The upper belt 1 and the lower belt 2 are superposed and woven with a plurality of entangled warp yarns 3, and the cushioning portion 4, the upper and lower belts 1,
In a shock-absorbing belt 7 in which separation parts 5 in which 2 are separated and woven are provided alternately and continuously, a belt unit 6 having separation parts 5 at both ends and a single or plural shock-absorbing parts 4 sandwiched therebetween
The upper and lower belts 1 and 2 of the one end separating portion 5 are connected to the upper and lower belts 1 and 2 of the other end separating portion 5 in the upper and lower positions, respectively, so that the belt unit 6 has a ring shape. [Effect] By connecting both end separation parts 5 of the belt unit 6 upside down, there is no release part even if the buffer part 4 is fully opened, and it is possible to reliably prevent a fall. Since the sheet supports the load, it is strong and safe. Further, unlike the conventional case, it is not necessary to provide a long buffer portion with a margin, and a buffer body having a small bulk can be obtained by not performing the fold-back sewing at the end of the buffer portion 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety belt equipped to prevent a fall in power transmission line construction, building construction, etc., and a cushioning belt for mitigating fall impact used in a safety device.

[0002]

[Prior Art and Problems]

 As a means of mitigating the retention impact at the time of a crash, in the olden days, the overlapped part of the belt that was folded back in the length direction was sewn in multiple threads, and an impact force was applied in the direction to tear the overlapped part, causing the thread to disengage. It had a buffer effect. However, it is difficult to make a uniform multi-thread sewing in manufacturing, and there is a problem in productivity.

Accordingly, as disclosed in Japanese Patent Publication No. 63-15863 by the present applicant, a buffer portion in which two sheets of an upper belt and a lower belt are partially polymerized and woven by a plurality of entangled warps, and an upper and lower belt are separately woven. The problem was solved by an impact force absorbing belt configured such that the separated portions were alternately and continuously woven, and the predetermined portion was used to tear the buffer portion by the impact force.

However, it is necessary to take measures such as folding back the end portion of the buffer portion woven by polymer weaving and strongly sewing it, or without it, the buffer portion is torn sequentially from the separating portion and The entangled warp was cut and reached the end, and the upper and lower belts could separate and cause a fall.

Therefore, as shown in FIG. 6, the end portion of the cushioning portion is sewn back, but this is not desirable because there is a possibility that a mistake in the sewing process may occur. Therefore, in addition to cushioning, a bypass belt may be installed between the connecting parts with ropes, etc., or the impact energy may be calculated in advance to make the impact absorbing part longer with a margin. There was also a problem in terms of economy.

[0006]

[Means for Solving the Problems]

 Therefore, in the present application, the problem is solved by the structure in which the cut end portion is not provided in the buffer portion which is polymerized and woven.

Specifically, a belt unit is obtained by cutting each intermediate portion of a belt, which is formed by alternately weaving a buffer portion and a separating portion. Both ends of the belt itself are separate parts, and the upper and lower belts are connected and sewn in reverse to form an annular shape, and the connection sewn part is provided with a connecting part for ropes, hooks, etc. .

Due to the Mobius strip-like connection that connects the upper and lower belts of the both end separation parts alternately, the upper and lower belts are not separated even if the shock absorbing part is completely dissociated by an unexpectedly high impact load, and is doubled. It becomes a circular belt of diameter and completely holds down the fallen object.

[0009]

【Example】

 As one example of the present application, a buffer section 4 in which two sheets of an upper belt 1 and a lower belt 2 woven using synthetic fibers are polymerized and woven by a plurality of entangled warps 3, and a separation section 5 in which the upper and lower belts are separated and woven Using a belt in which and are alternately continuous, the middle of both separating portions 5 sandwiching the buffer portion 4 is cut to form a single belt.

The cut ends of the upper and lower belts 1 and 2 appear in both separating parts 5, but one upper belt 1 to the other lower belt 2 and one lower belt 2 to the other upper belt 1. Connect with sewing. If other expressions are used, the buffer unit 4 of the belt unit 6 is twisted once, and the upper position belt and the lower position belt of each separation unit 5 are sewn together, and the results of both are the same. .

Therefore, an annular belt called Mobius strip is completed, and if each connecting part is pulled so as to be separated in both directions, the buffer parts are sequentially dissociated from both ends, and eventually disappear and disappear. It is a ring of a single belt with a diameter twice that of.

The connecting portion 8 to which the upper and lower belts are connected by sewing is provided with a ring-shaped connecting portion for connecting a rope, a hook and the like.

In this embodiment, the connection portion 8 is provided at the center position, but in this configuration, the dissociation action to both ends of the buffer portion 4 simultaneously starts, and a stronger buffer action is obtained from the beginning. For example, when the dissociation strength of the buffer portion 4 is designed to be 100 kgf, the dissociation strength doubles to 200 kgf because the dissociation action starts simultaneously from both ends.

Further, as another embodiment, as shown in FIG. 2, if the connecting portion 9 is provided at a position near one end of the buffer portion 4 of the connecting portion 8, the connecting portion 9 is initially closer to the end of the buffer portion 4 near the connecting portion. Only one side is dissociated, and then it is combined with the buffer section 4 at the other end to start the dissociation simultaneously. For example, if the dissociation strength of the buffer section 4 is set to 100 kgf in the same way as above, initially 100 kgf of dissociation starts from one end side, and if it progresses for a predetermined length, both dissociation actions become 200 kgf. It becomes dissociative strength and continues it. With this configuration, the dissociation start time difference can be obtained by setting the position of the connecting part or changing the length of the connecting part, and is an effective means when it is desired to set the initial load of the cushioning action low. Is.

Of course, it is possible to adjust the dissociation strength of both ends of the cushioning portion gradually from coarse to dense at the stage of weaving the buffer belt, and by using this method, the weaving can be performed as in the previous embodiment. In addition, the coupling portion may be provided at the intermediate position of the connection portion.

[0016]

[Effect of device]

 As described above, according to the present invention, the number of steps can be reduced as compared with the conventional one, and even if the cushioning portion is fully opened, there is no release portion, and it is possible to obtain the cushioning belt that surely prevents the fall. Two belts support the load, so it is strong and safe. Further, unlike the conventional case, it is not necessary to provide a long cushioning portion with a margin, and since the end portion of the cushioning portion is not folded back, a cushioning body having a small bulk can be obtained.

[Brief description of drawings]

[Fig. 1] Front view of this plan

FIG. 2 is a front view of another embodiment.

[Figure 3] Front view of the belt alone

FIG. 4 is a front view of another embodiment.

[Figure 5] Front view of the dissociated part

FIG. 6 is a perspective view of a conventional product

FIG. 7: Perspective view of conventional product

[Explanation of symbols]

 1 Upper belt 2 Lower belt 3 Entangled warp 4 Buffer section 5 Separation section 6 Belt unit 7 Buffer belt 8 Connection section 9 Coupling section

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[Procedure amendment]

[Submission date] February 28, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a front view of the belt alone.

FIG. 3 is a front view of the dissociated part.

FIG. 4 is a perspective view of a conventional product.

FIG. 5 is a perspective view of a conventional product.

[Explanation of symbols] 1 Upper belt 2 Lower belt 3 Entangled warp 4 Buffer section 5 Separation section 6 Belt unit 7 Buffer belt 8 Connection section 9 Coupling section

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

Claims (3)

[Scope of utility model registration request] 1. A buffer for alternately providing a buffer part 4 in which two upper belts 1 and 2 are superposed and woven by a plurality of entangled warps 3 and a separating part 5 in which upper and lower belts are separately woven. A belt unit 6 having both ends of the belt 7 as separating portions 5 and a single or a plurality of buffer portions 4 sandwiched therebetween.
The upper and lower belts 1 and 2 of the one end separating part 5 are respectively connected to the upper and lower belts 1 and 2 of the other end separating part 5 upside down, and the belt unit 6 is formed into a ring, and each connecting part 8 is connected to other members. A shock-absorbing belt characterized in that 2. The shock-absorbing belt according to claim 1, characterized in that both connecting portions (9) are provided corresponding to intermediate positions of the connecting portion (8). 3. The cushioning belt according to claim 1, wherein the connecting portions 9 are provided at predetermined positions near one end of the cushioning portion of the connecting portion 8.