JPH06292736A - Safety belt - Google Patents

Abstract

PURPOSE:To generate no thread breakage on one ear and the other ear of an outer tube cloth and prevent a core body from being exposed to the outside in a safety belt using a narrow belt made of the outer tube cloth and the core body as a life rope. CONSTITUTION:Wefts 7A, 7B of the surface and the back face of an outer tube cloth are guided to one ear 10 of the outer tube cloth. The wefts 7A of the surface are circularly bent and folded to the surface at one ear 10 to form surface weft circular sections 12A, and the wefts 7B of the back face are circularly bent and folded to the back face to form back face weft circular sections 12B. The surface weft circular sections 12a and the back face weft circular sections 12B are located in turn, one surface weft circular section 12A passes through the next back face weft circular section 12B, and a back face weft circular section 12B passes through the next surface weft circular section 12A. A weft circular texture 14 is formed, the wefts 7A of the surface are guided to the other ear 11 of the outer tube cloth, the wefts 7A of the surface are wound once on warps 6C at the other ear 11, and they are guided to the back face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety belt used at a work site at a high place such as a construction site.

[0002]

2. Description of the Related Art Safety belts are intended for the safety of workers at work sites in high places. They consist of a torso belt, a hook and a lifeline. The lifeline connects the torso belt and the hook, and the torso belt works. It is well known that it is wrapped around the body of a person. On the other hand, prior to this application, the inventor of the present invention has developed and proposed a narrow belt having a special structure. That is what is described in Japanese Utility Model Application Laid-Open No. 2-94569. The narrow belt disclosed in the same publication is composed of an outer tube cloth and a core. Then, the outer cylinder bed cloth is woven with the wear-resistant synthetic fiber threads, a large number of threads made of high-strength synthetic fibers are inserted into the outer tube bed cloth, and the core body is constituted by the high-strength synthetic fiber threads. Therefore, it is possible to give the core a great strength and protect it by the outer tube laying, and as shown in FIG. 5, as a lifeline of the safety belt, the narrow belt 1 of the publication.
Can be used. Therefore, the narrow belt 1 can be wound around the take-up reel 2 and the take-up reel 2 can be attached to the trunk belt 3, so that the narrow belt 1 can be taken up in a work place at a high place such as a construction site. It can be operated, its usability is good, and its functionality can be enhanced.

FIGS. 6, 7 and 8 show the narrow belt 1 of FIG. The narrow belt 1 is composed of an outer cylinder bedsheet 4 and a core body 5. As for the outer cover sheet 4, the outer cover sheet 4 is woven by plain bag weaving using warp yarns 6 and weft yarns 7 made of wear-resistant synthetic fibers such as drawn nylon fiber and drawn Tetron fiber. Furthermore, a large number of threads 8 made of high-strength synthetic fibers such as aramid fibers are inserted into the outer tubular bed cloth 4, and the high-strength synthetic fiber threads 8 are inserted in the outer tubular bed cloth 4 in the longitudinal direction of the outer tube bed cloth 4. The core body 5 is composed of the high-strength synthetic fiber threads 8 that are closely arranged in the width direction and the thickness direction of the outer casing sheet 4. further,
The outer cylinder bed cloth 4 and the core body 5 are flattened into a belt shape, and the outer cylinder bed cloth 4 and the core body 5 are attached to each other by a binding thread 9 to be integrated.

However, in the case of the safety belt of FIG.
The narrow belt 1 is taken up by the take-up reel 2 according to the action of the worker.
The narrow belt 1 is then pulled out from the take-up reel 2.
It is wound up in and is repeated frequently. For this reason,
One and the other ears 10 and 11 of the outer casing 4 of the narrow belt 1 are rubbed against the take-up reel 2 and thread breakage occurs in the one and the other ears 10 and 11, and the core body 5 is exposed to the outside. There is a problem of doing. Further, when the trunk belt 3 is wound around the body of the worker, the narrow belt 1 is usually pulled out in front of the worker. In that regard, in particular, the front ear 10
Thread breakage easily occurs.

The inventor of the present invention has performed an endurance test on the narrow belt 1 shown in FIG. 9 and 10 show the test method. In the durability test of FIG. 9, the narrow belt 1 is pulled out straight and wound up straight. And that is 4
One and the other ear 10, when repeated 000 times,
Thread breakage occurred at 11 and the narrow belt 1 was bent in an arc shape.
In the durability test of FIG. 10, the narrow belt 1 is pulled out to the front of the worker and is wound in that state. Then, when this was repeated 20 to 720 times, thread breakage occurred in the front ear 10 and the narrow belt 1 was bent in an arc shape.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention solves the above-mentioned conventional problems in a safety belt that uses a narrow belt composed of an outer tubular sheet and a core as a lifeline, and a thread is attached to one and the other ears of the outer tubular sheet. The purpose is to prevent the core body from being exposed to the outside without causing breakage.

[0007]

According to the present invention, the weft threads on the front surface and the back surface of the outer tube sheet are guided to one ear of the outer tube sheet, and at one ear, the surface weft thread is curved in an annular shape and folded back to the surface. As a result, the front surface weft annular portion is formed, and the back surface weft yarn is curved in an annular shape and folded back to form the back surface weft annular portion. Then, the front weft annular portion and the back weft annular portion are alternately arranged, the front weft annular portion passes through the next back weft annular portion, the back weft annular portion passes through the next front weft annular portion, and A weft annular structure is formed. Furthermore, the weft on the surface is guided to the other ear of the outer casing, and the weft on the surface is wound around the warp once at the other ear and is guided to the back surface.

The weft yarns on the front and back surfaces of the outer casing sheet are guided to one and the other ears of the outer casing sheet, and the weft yarn on the surface is not only curved in one ear but also in the other ear, and is folded back on the surface. As a result, the front weft annular portion is formed, the back weft yarn is curved in an annular shape, and the back weft yarn is folded back to form the back weft annular portion. Then, in one and the other ear, the front surface weft annular portion and the back surface weft annular portion are alternately positioned, the front surface weft annular portion is passed through the next back surface weft annular portion, and the back surface weft annular portion is moved to the next surface. It may be passed through the weft annular portion to form a weft annular structure.

[0009]

Description of Embodiments Embodiments of the present invention will be described below.
1 and 2 show an embodiment of the present invention. This is a narrow belt 1 consisting of an outer tube cloth 4 and a core body 5. This narrow belt 1 is used as a lifeline of a safety belt, and the narrow belt 1 is wound around a take-up reel 2 and a take-up reel. 2 is attached to the trunk belt 3 in the same manner as the safety belt in FIG. Further, similarly to the safety belt of FIG. 5, in the outer tube cloth 4 of the narrow belt 1, the warp threads 6 and the weft threads 7A, 7B thereof are
As the yarn, wear-resistant synthetic fiber such as drawn nylon fiber and drawn Tetron fiber is used as the warp yarn 6 and the weft yarn 7A,
The outer cylinder bed cloth 4 is woven by 7B. Furthermore, a large number of yarns 8 made of high-strength synthetic fiber such as aramid fiber 8
Is inserted into the outer tube blanket 4, and the high-strength synthetic fiber threads 8 are arranged in the outer tube blanket 4 so as to extend in the length direction of the outer tube blanket 4, and the width direction and the thickness direction of the outer tube blanket 4 are The core body 5 is composed of high-strength synthetic fiber threads 8 closely arranged in parallel with each other. Similar to the safety belt shown in FIG. 5, the outer cover sheet 4 and the core body 5 are flattened into a belt shape, and the outer cover sheet cloth 4 and the core body 5 are attached and integrated with each other by the binding thread 9.

Further, in the narrow belt 1, as shown in FIGS. 3 and 4, the wefts 7A and 7B on the front and back surfaces of the outer tubular cloth 4 are guided to one ear 10 of the outer tubular cloth 4 and In the selvage 10, the weft 7A on the surface is curved in an annular shape and folded back to the surface, thereby forming a surface weft annular portion 12A. Similarly, in the one ear 10, the back surface weft 7B is curved in an annular shape and folded back to form a back surface weft annular portion 12B. Then, in one ear 10, the front surface weft annular portions 12A and the back surface weft annular portions 12B are alternately positioned, the front surface weft annular portion 12A passes through the next back surface weft annular portion 12B, and the back surface weft annular portion 12B is formed. One auxiliary yarn 13 is passed through the next front surface weft annular portion 12A and is entangled with the front surface weft annular portion 12A and the back surface weft annular portion 12B, whereby a weft annular structure 14 is formed.

Further, the surface weft 7A is guided to the other ear 11 of the outer casing 4, and at the other ear 11, one or a plurality of warps 6C are arranged at that position, and the surface weft 7A is the warp. It is wound once on 6C and led to the back side. In other words, the back weft 7B is wound around the warp 6C once and is guided to the front, and in the other ear 11, the front weft 7A and the back weft 7B are continuous with each other. Is.

Therefore, with respect to the outer covering 4 of the narrow belt 1, the one ear 10 is formed by the weft annular structure 14.
Is reinforced, and the other selvage 11 is reinforced by the wefts 7A and 7B around the warp 6C. Therefore, the narrow belt 1 is pulled out from the take-up reel 2 and taken up by the take-up reel 2, and this is frequently repeated, so that one and the other ears 10, 11 of the outer tube cloth 4 are put on the take-up reel 2. Even if it is rubbed, thread breakage does not occur in the one ear 10 and the other ear 11,
The core body 5 is not exposed to the outside. In particular, for one ear 10, it is formed by the weft annular tissue 14 and effectively reinforces one ear 10. Therefore, when the narrow belt 1 is wound on the take-up reel 2, one ear 10 is the front ear of the narrow belt 1 and the other ear 11 is the rear ear of the narrow belt 1. Then, even if the narrow belt 1 is pulled out to the front of the worker, the yarn breakage does not occur in the front ear 10.

The inventor of the present invention tested the narrow belt 1 of FIG. 1 for durability. The test method is the narrow belt 1 in FIG.
Is the same as. In the case of the narrow belt 1 of FIG. 6, in the durability test of FIG. 9, when pulling and winding were repeated 4000 times, yarn breakage occurred in the one and the other ears 10 and 11, and the narrow belt 1 formed into an arc shape. The bend is as described above. On the other hand, in the narrow belt 1 of FIG.
In the durability test of FIG. 9, the narrow belt 1 was not abnormal even after the pulling-out and winding-up were repeated 10,000 times. Furthermore, in the case of the narrow belt 1 of FIG. 6, in the durability test of FIG.
When repeated 20 times, thread breakage occurred in the front ear 10,
Although the narrow belt 1 is bent in the shape of an arc as described above, with the narrow belt 1 of FIG. 1, even if the pulling and winding are repeated 10,000 times in the endurance test of FIG. There was nothing wrong with.

Instead of this, the wefts 7A and 7B on the front surface and the back surface of the outer tubular cloth 4 are guided to one and the other ears 10 and 11 of the outer tubular cloth 4 and not only one ear 10
Also in the other ear 11, the weft 7A on the surface is curved in an annular shape,
It is also possible to fold back the front surface, thereby forming the front surface weft annular portion 12A, curving the back surface weft 7B in an annular shape, and folding back to the back surface, thereby forming the back surface weft annular portion 12B. Then, in the one and the other ear 10, 11, the front surface weft annular portion 12A and the back surface weft annular portion 12B are alternately arranged alternately, and the front surface weft annular portion 12A is passed through to the next back surface weft annular portion 12B, and the back surface weft Ring part 12B
Through the next surface weft annular portion 12A. Further, in one and the other selvages 10 and 11, one auxiliary yarn 13 is entangled with the front weft annular portion 12A and the back weft annular portion 12B, whereby the weft annular structure 14
With the formation of, the weft annular tissue 14 can reinforce one and the other ear 10, 11.

[0015]

As described above, according to the present invention, the narrow belt 1 composed of the outer tubular spread 4 and the core body 5 is used as the lifeline of the safety belt.
One ear 10 is reinforced by the weft annular structure 14, and the wefts 7A and 7B around the warp 6C or the weft annular structure 1
The other ear 11 is reinforced by 4. Therefore, the narrow belt 1 is pulled out from the take-up reel 2 and taken up by the take-up reel 2, which is frequently repeated, and the outer tube cloth 4
Even if the one and the other ears 10, 11 are rubbed on the take-up reel 2, the one and the other ears 10, 11 do not break, and the core body 5 is not exposed to the outside. Even if the narrow belt 1 is pulled out in front of the operator, it is possible to prevent the yarn breakage from occurring in the front ear 10 and to achieve the intended purpose.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the narrow belt of FIG.

FIG. 3 is an organization chart of the outer cover sheet cloth of FIG.

FIG. 4 is an explanatory diagram of the weft annular structure of FIG. 1.

FIG. 5 is a perspective view showing a conventional safety belt.

6 is a cross-sectional view of the narrow belt of FIG.

7 is a vertical sectional view of the narrow belt of FIG.

FIG. 8 is an organization chart of the outer tube cloth of FIG.

FIG. 9 is an explanatory diagram showing a durability test method for a narrow belt.

FIG. 10 is an explanatory diagram showing another durability test method.

[Explanation of symbols]

 1 Thin Belt 2 Winding Reel 3 Body Belt 4 Outer Cylindrical Cloth 5 Core 6C Warp 7A, 7B Weft 10, 11 Ear 12A Front Weft Annular Section 12B Back Weft Annular Section 14 Weft Annular Structure

Claims (2)

[Claims] 1. A narrow belt composed of an outer cover sheet and a core body is used as a lifeline, the narrow belt is wound around a winding reel, and the winding reel is attached to a trunk belt,
The outer cylinder bed cloth is woven with yarns of wear-resistant synthetic fibers, a large number of threads made of high-strength synthetic fibers are inserted into the outer cylinder bed cloth, and the core is made of the high-strength synthetic fiber threads. A safety belt that guides the weft yarns on the front and back surfaces of the outer casing sheet to one ear of the outer casing sheet, and at one ear, bends the weft yarn on the surface in an annular shape and folds back to the surface. , Thereby forming a front surface weft annular portion, curving the back surface weft into an annular shape, and folding it back to the back surface, thereby forming a back surface weft annular portion, and alternating the front surface weft annular portion and the back surface weft annular portion. The front surface weft annular portion is passed through the next back surface weft annular portion, and the back surface weft annular portion is passed through the next front surface weft annular portion, thereby forming a weft annular structure. table Guide the weft at the other ear of the outer cylinder bedsheets, in the other ear, wound once weft of the surface warp threads, safety belt, characterized in that led them to the back. 2. A narrow belt composed of an outer tube cloth and a core is used as a lifeline, the narrow belt is wound around a winding reel, and the winding reel is attached to a trunk belt,
The outer cylinder bed cloth is woven with yarns of wear-resistant synthetic fibers, a large number of threads made of high-strength synthetic fibers are inserted into the outer cylinder bed cloth, and the core is made of the high-strength synthetic fiber threads. In the safety belt, which guides the weft yarns on the front surface and the back surface of the outer casing sheet to one and the other ears of the outer casing sheet, and in the one and the other ears, the wefts on the surface are curved in an annular shape, The front surface is folded back to form a front weft annular portion, the back surface weft is curved in an annular shape, and the back surface is folded back to form a back surface weft annular portion, and the front surface weft annular portion and the back surface weft annular portion are formed. Portions are sequentially and alternately arranged, the front weft loop portion is passed through the next back weft loop portion, and the back weft loop portion is passed through the next front weft loop portion, thereby forming a weft loop design. Safety belt, characterized in that it was.