JPH04212381A - Safety belt - Google Patents

Abstract

PURPOSE:To solve a problem which follows handling of lifeline of a safety belt, and to enhance its functionality. CONSTITUTION:In a safety belt in which an annular connecting ring 4 is provided on the body belt 1, the connecting ring 4 and a hook 2 are connected by a lifeline, and the body belt 1 is wound to the body of a worker, a connecting belt 6 of thin width is used as its life-line, a take-up reel 7 of the connecting belt 6 is attached to the connecting ring 4, the connecting belt 6 is wound to the take-up reel 7, and by the take-up reel 7 and the connecting belt 6, the connecting ring 7 and the hook 2 are connected.

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 high-altitude work sites such as construction sites.

0002

[Constitution of prior art and its problems] FIG. 29 shows a conventional safety belt. This safety belt is intended to ensure the safety of workers at high-altitude work sites, and has a torso belt 1 and a hook 2. The hook 2 is for engaging with a fixed object at an elevated work site. The torso belt 1 is for wrapping around the worker's body and has a buckle 3. An annular connecting ring 4 is provided on the trunk belt 1. Further, a rope 5 having a circular cross section is used as a lifeline, and the connecting ring 4 and the hook 2 are connected by this rope. Therefore, when a worker falls from a high-altitude work site, the worker's body can be supported by the rope 5, the connecting ring 4, and the torso belt 1.

However, this safety belt
There were problems with the handling of In order to ensure the safety of workers at high-altitude work sites, the rope 5 needs to have great strength, and it is necessary to use a fairly thick rope 5. Furthermore, it is necessary to use a fairly long rope 5 in consideration of the range of motion of workers working at high places. For this reason, handling the rope 5 is troublesome,
The problem was that it was difficult to use and had low functionality.

0004

OBJECTS OF THE INVENTION Therefore, the present invention has been made to solve the above-mentioned conventional problems and to improve the functionality of a safety belt.

[0005]

According to the present invention, in a safety belt in which a torso belt is provided with an annular connecting ring and the connecting ring and a hook are connected by a lifeline, a narrow connecting belt is used as the lifeline and is connected to the connecting ring. A belt take-up reel is attached. Then, the connecting belt is wound onto a take-up reel, and the connecting ring and the hook are connected by the take-up reel and the connecting belt.

[0006] A take-up reel may be removably attached to the coupling ring.

The body belt is passed through the hole in the metal fitting, a folded part of the body belt is formed by the metal fitting, the folded part is passed through a connecting ring, the connecting ring is attached so as to be pivotable around the folded part of the body belt, and the metal fitting is attached to the body belt. An auxiliary member may be interposed between the connecting ring and the connecting ring to hold the connecting ring at a certain distance from the metal fitting.

[0008]

[Description of Embodiments] Embodiments of the present invention will be described below.

In FIG. 1, this safety belt has a torso belt 1 and a hook 2, and the torso belt 1 is provided with an annular connecting ring 4, similar to the safety belt shown in FIG. In place of the rope 5 shown in FIG. 29, a narrow connecting belt 6 is used as the lifeline of the safety belt.

The connecting belt 6 has been specially developed (Utility Application No. 1-3022). In the case of this connecting belt 6, the outer tube cover is woven with threads of wear-resistant synthetic fibers such as stretched nylon fibers and stretched Tetron fibers, and a large number of threads made of aramid fibers are inserted into the outer cover cover. Inside the bed, aramid fiber threads are arranged to extend in the length direction of the outer cylinder bed, and are closely aligned in the width and thickness directions of the outer cylinder bed, and the aramid fiber threads constitute a core body. Then, the outer cylinder covering and the core are flattened into a belt shape, and the outer cylinder covering and the core are sewn and integrated with a binding thread. Therefore, the narrow connecting belt 6
Even so, greater strength can be obtained by aramid fiber yarns. In addition, the aramid fiber threads are covered and protected by the outer tube cover, so that the aramid fiber threads are not damaged or worn, and are not exposed to ultraviolet rays. Therefore, its strength can be maintained for a long period of time, and the connecting belt 6 can be used as a lifeline for a safety belt.

Then, the take-up reel 7 of the connecting belt 6 is attached to the connecting ring 4 of the trunk belt 1, and the connecting belt 6
is wound on the take-up reel 7. In this example,
As shown in FIG. 2, the take-up reel 7 is provided with a bifurcated connecting part 8, the connecting ring 4 is arranged between each connecting part 8, and the connecting pin 9 is pushed into the hole of the connecting part 8. The connecting ring 4 and the take-up reel 7 are connected by. Further, the take-up reel 7 has a rotating body 11 integrated with a flange 10, and the connecting belt 6 is inserted into a groove 12 of the rotating body 11.
It is folded back and doubled over. The connecting belt 6 is then sewn with a binding thread. Furthermore, the disc 13 is fitted into the tip of the rotating body 11, and the flange 10
The connecting belt 6 is wound around the rotating body 11 between the rotating body 11 and the disc 13, and is inserted between the side plates 14 of the take-up reel 7. Furthermore, the shaft 15 is inserted into the hole of the side plate 14 and press-fitted into the hole of the rotating body 11, and the rotating body 11 is supported by the side plate 14 and the shaft 15.
The rotating body 11 rotates integrally with the shaft 15. Further, on the outside of the side plate 14, a spring 16 is housed in a cover 17, and the cover 17 is fixed to the side plate 14. The spring 16 is for elastically biasing the rotating body 11, and has a spiral shape. The inner end is inserted into the groove 18 of the shaft 15, and the outer end is engaged with the protrusion of the cover 17. Therefore, the elasticity of the spring 16 acts on the shaft 15 and the rotating body 11, and the rotating body 11 is elastically biased in the direction of rotation, and the connecting belt 6 is held in a state wound around the rotating body 11.

[0012] The take-up reel 7 and the connecting belt 6
The connecting ring 4 and the hook 2 are connected by. In this embodiment, a shock absorber 19 is provided near the hook 2.
is provided, and the connecting belt 6 is passed through the hole of the hook 2 and folded back. Furthermore, as shown in FIGS. 3 and 4, within the shock absorber 19, the connecting belt 6 is bent on both sides, folded back, and overlapped in double layers, and the connecting belt 6 is sewn with a binding thread, and is made of metal. The tube 20 is crimped onto the connecting belt 6, and the insertion pin 21 is inserted into the turning point of the connecting belt 6. This is housed in the cover 22.

In this safety belt, when the torso belt 1 is wrapped around the worker's body and the hook 2 is engaged with a fixed object at the high-altitude work site, when the worker falls from the high-altitude work site, the connecting belt 6 is unwound from the take-up reel 7. When the connecting belt 6 is completely unwound, the worker's body is supported by the hook 2, the connecting belt 6, the take-up reel 7, the connecting ring 4, and the torso belt 1. Furthermore, within the shock absorber 19, the connecting belt 6 is stretched by the load, and its sewing thread is cut.
The insertion pin 21 is pushed into the metal tube 20, and the insertion pin 21
As a result, the metal tube 20 is deformed and expanded. This absorbs the shock.

[0014] In the case of this safety belt, it is necessary to use a considerably long connecting belt 6 in consideration of the range of motion of workers working at heights, but this can be wound onto the take-up reel 7. , the problems associated with handling the conventional rope 5 do not occur. Therefore, it is easy to use and can improve functionality.

Various modifications can be made to this invention. For example, as shown in FIGS. 5 and 6, instead of the bifurcated connecting portion 8 shown in FIGS. Insert the connecting fitting 24 into the connecting part 23. Then, push the connecting pin 25 into the hole of the connecting part 23 and the connecting fitting 24,
The connecting ring 4 is connected by the connecting fitting 24 and the connecting pin 25.
The winding reel 7 may be connected to the winding reel 7.

As shown in FIGS. 7 and 8, a shock absorber 19 is constructed by a connecting belt 26 similar to the connecting belt 6, and a rectangular cylindrical piece is attached to the take-up reel 7, similar to the safety belt shown in FIGS. 5 and 6. A connecting portion 23 is provided, and a connecting pin 25 is provided.
into the hole of the connecting part 23. Then, the connecting belt 26 of the shock absorber 19 may be engaged with the connecting ring 4 and the connecting pin 25, and the take-up reel 7 may be attached to the connecting ring 4 via the shock absorber 19. Regarding the connecting belt 6 and the hook 2, connect the connecting belt 6 to the hook 2.
Simply insert it into the hole, fold it back, overlap it twice, and sew it together with a binding thread.

As shown in FIGS. 9 and 10, the small hook 27 is inserted into the connecting portion 23 of the take-up reel 7, and the connecting pin 2
5 into the holes of the connecting part 23 and the small hook 27. Then, the small hook 27 may be engaged with the connecting ring 4, and the take-up reel 7 may be removably attached.

In addition, as shown in FIG.
It is also conceivable that the small hook 27 and the shock absorber 19 are connected by the small hook 8 and the take-up reel 7 is attached to the connecting ring 4 via the shock absorber 19 and the small hook 27.

The torso belt 1 of the safety belt is usually equipped with accessories such as a tool storage bag. For this reason, workers often work on the ground with the torso belt 1 wrapped around them. In this case, the connecting belt 6
It is preferable if the take-up reel 7 can be removed from the trunk belt 1, since this can reduce the burden on the operator. 12 and 13 show an embodiment in which the take-up reel 7 can be removed. In this embodiment, the take-up reel 7 is removably attached to the connecting ring 4, and as shown in FIG.
is combined with the small hook 31, and the stoppers 29, 30,
The small hook 31 and the spring 32 are inserted between the side plates 14 of the take-up reel 7, the connecting pin 33 is pushed into the hole of each part, and the stoppers 29, 30 can rotate around the connecting pin 33. Furthermore, the spring 32 engages with the projections 34 of the stoppers 29 and 30, the spring 32 elastically biases the stoppers 29 and 30, and the bent portion 35 engages with the tip of the small hook 31, causing the stopper 29 and 30 to be elastically biased.
The small hook 31 is closed by 9 and 30. Therefore, the small hook 31 does not separate from the connection ring 4, and the take-up reel 7 is firmly connected and supported. Then, by manually operating the handles 36 of the stoppers 29 and 30, the stoppers 29 and 30 are rotated against the spring 32 and opened, as shown in FIG. 14, and the small hook 31 is separated from the connecting ring 4. The take-up reel 7 can be easily removed.

Regarding the trunk belt 1 and the connecting ring 4, normally a protective tube 37 is provided in the straight portion of the connecting ring 4, as shown in FIGS. 16, 17 and 18.
The trunk belt 1 is passed through the hole of the metal fitting 38 , a folded part of the trunk belt 1 is formed by the metal fitting 38 , the folded part is passed through the connecting ring 4 , and the connecting ring 4 is formed by the trunk belt 1 , the metal fitting 38 and the protective tube 37 . is retained. Therefore, the connecting ring 4 is rotatably attached around the folded portion of the torso belt 1, and is attached to the left hip of the worker. When the connecting belt 6 is pulled out from the take-up reel 7, the tension is transmitted to the take-up reel 7 and the connecting ring 4, the take-up reel 7 is directed in the direction in which the connecting belt 6 is pulled out, and the connecting ring 4 is pulled out from the winding reel 7. It revolves around the folded part of the belt 1. This allows the connecting belt 6 to be pulled out smoothly. However, as shown in FIG. 19, the turning of the connecting ring 4 is limited by the metal fitting 38 and the trunk belt 1, and the turning angle is 1
It is within 80°. Therefore, the winding reel 7 is 180
It cannot turn more than 1°. Furthermore, when the worker's pants are swollen, the take-up reel 7 may get caught on the pants, making it difficult to turn. Therefore, when the connecting belt 6 is pulled out in front of the worker, the connecting belt 6 comes into contact with the side plate 14 of the take-up reel 7, as shown in FIG. 20, and the connecting belt 6 cannot be pulled out smoothly. There is a problem that the side plate 14 is rubbed by the connecting belt 6 and is worn out. After pulling out the connecting belt 6, the connecting belt 6
When it is wound up on the take-up reel 7, the connecting belt 6 cannot be wound up smoothly, and the side plate 14 is also worn out by the connecting belt 7. Therefore, in the embodiment of FIGS. 12 and 13, as shown in FIGS. 21 and 22, an O-ring-shaped auxiliary member 39 is provided between the metal fitting 38 and the connecting ring 4, and the torso belt 1 is connected to the metal fitting 38 and the auxiliary member. 3
9 and the connecting ring 4, and the connecting ring 4 is held by the trunk belt 1 and the auxiliary member 39. Therefore, the connecting ring 4 is held at a position separated from the metal fitting 38 by the height of the auxiliary ring 39. In this embodiment, the connecting ring 4 is held at a distance of 5 mm or more from the metal fitting 38. Therefore, as shown in FIG. 23, the connecting ring 4 can rotate more than 180 degrees. The take-up reel 7 is also held at a sufficient distance from the pants and can be rotated accurately. Therefore, as shown in FIG. 24, when the connecting belt 6 is pulled out in front of the operator, the connecting belt 6 does not come into contact with the side plate 14 of the take-up reel 7, and the connecting belt 6 can be pulled out smoothly. Connecting belt 6
There is no fear that the side plate 14 will be worn out.

In place of the auxiliary member 39 shown in FIG. 21, an auxiliary member 40 shown in FIGS. 25 and 26 may be arranged between the ring stop 38 and the connecting ring 4. The auxiliary member 40 consists of a double ring having a pair of holes, and the torso belt 1 is attached to the auxiliary member 40.
is passed through one hole of the auxiliary member 40, passed through the connecting ring 4, folded back, and passed through the other hole of the auxiliary member 40. This holds the connecting ring 4. As shown in FIGS. 27 and 28, the metal fitting 38 and the auxiliary member 41 are fixed by welding or other means, the connecting ring 4 is positioned on the auxiliary member 41, and the torso belt 1 is passed through the metal fitting 38 and the connecting ring 4. , whereby the connecting ring 4 may be held.

[0022]

[Effects of the Invention] As explained above, according to the present invention, the connecting belt 6 can be wound onto the take-up reel 7,
The problems associated with handling the conventional rope 5 do not arise. Therefore, it is easy to use and can improve functionality. The take-up reel 7 is removably attached to the connecting ring 4, and when a worker works on the ground with the body belt 1 wrapped around it, the take-up reel 7 can be removed from the body belt 1 to reduce the burden on the worker. can. Metal fittings 3
By interposing an auxiliary member between the connecting ring 8 and the connecting ring 4 to hold the connecting ring 4 at a certain distance from the metal fitting 38, the connecting belt 6 can be pulled out smoothly, and the intended purpose can be achieved. It is something.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the invention.

FIG. 2 is an exploded view of the take-up reel of FIG. 1;

FIG. 3 is an explanatory diagram of the shock absorber in FIG. 1;

FIG. 4 is a perspective view of the connecting belt of FIG. 3;

FIG. 5 is a perspective view of another embodiment.

6 is an exploded view of the connecting fitting and connecting pin of FIG. 5. FIG.

FIG. 7 is a perspective view of another embodiment.

8 is an explanatory diagram of the shock absorber of FIG. 7. FIG.

FIG. 9 is a perspective view of another embodiment.

FIG. 10 is an exploded view of the small hook and take-up reel of FIG. 9;

FIG. 11 is a perspective view of another embodiment.

FIG. 12 is a sectional view of another embodiment.

13 is a side view of the connecting fitting and take-up reel of FIG. 12. FIG.

14 is a side view showing the take-up reel of FIG. 13 in a state where the stopper is open; FIG.

FIG. 15 is an exploded view of the take-up reel of FIG. 13;

16 is a reference diagram for explaining the effect of the safety belt shown in FIG. 12. FIG.

17 is a side view of the safety belt of FIG. 16 in a worn state; FIG.

FIG. 18 is a perspective view of the torso belt, connecting ring, and ring stop of FIG. 16;

19 is a cross-sectional view showing the rotation angle of the connecting ring of FIG. 16; FIG.

20 is a cross-sectional view showing a state in which the connecting belt of FIG. 16 is pulled out; FIG.

21 is a perspective view of the connecting ring, ring stop and auxiliary ring of FIG. 12; FIG.

22 is an exploded view of the connecting ring, ring stop and auxiliary ring of FIG. 21; FIG.

23 is a cross-sectional view showing the rotation angle of the coupling ring of FIG. 21; FIG.

24 is a cross-sectional view showing a state in which the connecting belt of FIG. 12 is pulled out; FIG.

FIG. 25 is a perspective view of another embodiment.

FIG. 26 is a cross-sectional view of the auxiliary ring of FIG. 25;

FIG. 27 is a perspective view of another embodiment.

FIG. 28 is a cross-sectional view of the ring stop and auxiliary ring of FIG. 27;

FIG. 29 is a side view of a conventional safety belt.

[Explanation of symbols]

1 Torso belt 2 Hook 4 Connecting ring 6 Connecting belt 7 Take-up reel

Claims (3)

[Claims] [Claim 1] A torso belt is provided with an annular connecting ring,
In the safety belt in which the connecting ring and the hook are connected by a lifeline and the torso belt is wound around the body of the worker, a narrow connecting belt is used as the lifeline, and the connecting belt is wound around the connecting ring. A safety belt characterized in that a reel is attached, the connecting belt is wound onto the take-up reel, and the connecting ring and the hook are connected by the take-up reel and the connecting belt. 2. The safety belt according to claim 1, wherein the take-up reel is removably attached to the connection ring. 3. Passing the torso belt through a hole in a metal fitting, forming a folded part of the torso belt by the metal fitting, passing the folded part through the connecting ring, and allowing the connecting ring to pivot around the folded part. 2. The safety belt according to claim 1, further comprising an auxiliary member interposed between the metal fitting and the connecting ring to hold the connecting ring at a certain distance from the metal fitting.