JP3011404U - Belt belt winder for safety belt - Google Patents

Abstract

(57) [Summary] [Purpose] To eliminate the belt type shock absorber from the safety belt, improve the handleability, reduce the weight, and reduce the cost. [Composition] A cushioning member 10 that surrounds the bobbin core cylinder 4 is provided, and a reinforcing shaft 12 and a stopper shaft 13 are provided between the bobbin side plate 6 at an eccentric position from the bobbin shaft 8, and the outer periphery of the cushioning member 10 and the reinforcing shaft 12, The belt R is successively wound around the stopper shaft 13 in layers, and when dropped, the belt R wound up in layers is pulled out, and when the load exceeds a predetermined value, the stopper shaft 13 is broken, thus absorbing and absorbing the drop impact load. Configuration. [Effect] The belt type shock absorber can be eliminated from the safety belt, and the weight can be reduced, the handling can be improved, and the cost can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present application relates to a safety belt used when working at a high place, and particularly to a winder for winding a belt, which replaces a conventional rope.

[0002]

[Prior art]

 The wind-up type safety belt for work at high places that has been conventionally used is that if the belt R with the hook F is pulled out from the winder M and the pulling out is stopped for a predetermined length, that position So the belt was locked. Even if the lock is called, the bobbin does not rotate in the rewinding direction, but it can be pulled out in the stretching direction of the belt, and when rewinding (to accommodate the belt), it engages with the ratchet teeth of the bobbin. There have been cases in which the released claw is released by pressing the release button, or it is pulled out slightly from the locked position and the direction of the claw is changed at the missing ratchet teeth to release. Therefore, in the unlikely event that a worker falls from a high place, all the belts will be pulled out, and the belt mainly composed of aramid fibers has a small elongation and the drop impact load is high unlike nylon ropes. For this reason, as shown in FIGS. 9 and 10, the belt B wound around the waist of the operator is provided with a buffer S for the purpose of relaxing the impact load at the time of a crash. The buffer may also be interposed between the rope belt R and the hook F. The cushioning body S shown in FIG. 9 is manufactured by folding back a narrow woven belt and superposing it, and then superposing the overlapped portion in a zigzag manner, interposing it between the winder and the ring, and inserting and connecting it to the belt B. It was done. The buffer S shown in FIG. 10 is produced by folding back a part of the rope-shaped belt R and polymerizing it, and then sewing the overlapped portion in a zigzag manner by multiple stitches, and joining it to the base of the hook F. The buffering effect is set to 900 kgf or less, which is specified in the "safety zone standard" of the Ministry of Labor. In the work using the safety belt, the hooks are repeatedly changed when moving to the work place, and it has a certain amount of texture and texture during locking and during the operation after locking. It was difficult and uncomfortable for the operator to make the cushioning body S bulky at the waist or swing at the root of the hook. The cost of the buffer S in the entire safety belt occupies a large weight.

[0003]

[Problems to be solved by the device]

 Therefore, the present application eliminates a belt-type shock absorber, which is inferior in handleability and costly, and improves the handleability and reduces the cost.

[0004]

[Means for Solving the Problems]

 The conventional belt-type shock absorber S is provided outside as described above, but in the present application, a shock absorber is provided inside the belt winder to absorb and relieve the drop impact load. Specifically, a cushioning member 10 made of a soft material is provided in a shape surrounding the bobbin core cylinder 4 of the bobbin core for winding and accommodating the belt R in the winding machine, and the reinforcing shaft is eccentric to the bobbin shaft 8. 12 and the stopper shaft 13 are provided between the bobbin side plates 6, the belt R is wound around the cushioning member 10, the reinforcing shaft 12 and the stopper shaft 13 in layers, and when falling, the belt R is wound up in layers and the cushioning member is wound. When 10 is slightly deformed and a load is further applied, the stopper shaft 13 is broken, and the impact force is absorbed and relaxed.

[0005]

【Example】

 1 to 6, one end of the belt R is fastened to a bobbin 2 axially arranged between both side plates of a frame 1 bent in a substantially U shape as shown in FIGS. 1 to 6. Is a belt winder that pulls out against the force of the spiral spring 3 and rewinds by the spring force. The bobbin core cylinder 4 is a thin plate bent in a substantially C-shape in cross section, and is in the axial direction. Both ends of the bobbin side plate 6 are fixed to the bobbin side plate 6 by press-fitting the projections 5 formed at the both ends into the receiving holes 7 formed in the bobbin side plate 6. The inner diameter of the bobbin core cylinder 4 is separated from the outer circumference of the bobbin shaft 8 by some distance. Therefore, the ring-shaped portion R1 formed at the end of the belt R can be inserted through the notch 9 of the bobbin core cylinder 4, and the ring-shaped portion R1 arranged in the bobbin core cylinder 4 can be inserted into the bobbin core cylinder 4. The bobbin shaft 8 inserted into the bin core portion is penetrated so that the end portion of the belt R is closely locked to the bobbin shaft 8. Next, the cushioning member 10 is fitted on the outer circumference of the bobbin core cylinder 4. This cushioning member 10 is substantially C-shaped like the bobbin core cylinder 4, and when fitted onto the bobbin core cylinder 4, it can match the cutout portion 9 of the bobbin core cylinder 4 and pass the belt. It is becoming like this. The cushioning member 10 may be fitted into the bobbin core cylinder 4 when the bobbin core cylinder 4 and the bobbin side plate 6 are fixed, or may be fitted after the bobbin 2 is formed. The cushioning member 10 is made of urethane resin and has a tooth-shaped inner surface, a thick-walled portion and a thin-walled portion, and a hole is provided axially through the thick-walled portion. A space 11 for deformation. On the outer periphery of the cushioning member 10, a belt R having a ring-shaped portion R1 at one end locked to the bobbin shaft 8 is wound in layers, so that the belt R passes through the cushioning member 10 and the bobbin core cylinder 4 It will be rolled up to 8. When the belt R is wound twice around the outer circumference, the stopper shaft 13 is provided between the bobbin side plates 6, and from the third time, it is wound on the stopper shaft 13 in layers as shown in FIG. In addition, a reinforcing shaft 12 is fixedly inserted between the bobbin side plates 6 at the corners of the notch 9 of the bobbin core cylinder 4, and the force applied to the bobbin core cylinder 4 at the time of tightening is received by the reinforcement shaft 12 and buffered to the bobbin core cylinder 4. The member 10 is pressed evenly and the bobbin core cylinder 4 is prevented from being broken.

When using the safety belt, a buckle is sewn to one end of the waist belt B as shown in FIG. 8, a hook F is provided at the tip of the rope belt R, and the base end is connected to the winding shaft. A winding machine in which the rope-shaped belt R is wound and accommodated by the elastic force of the spiral spring 3 is inserted and connected to the belt B. This safety belt is attached to the waist of the worker, and the hook F 1 is moved while hanging on a structure or the like to safely perform work at a high place. However, in the unlikely event that the worker falls, the rope-shaped belt R is pulled out from the winder M, and in the present embodiment, as shown in FIG. 3, the belt R is pulled out on the bobbin shaft 8 core wire to wind the belt R. The cushioning member 10 is pressed from the surroundings by tightening, the cushioning member 10 is deformed, absorbs and alleviates the drop impact load, and the stopper shaft 13 breaks (Fig. 4), absorbs the impact load and prevents the fall. is there. In the case of the conventional product, the belt type shock absorber S is pulled out and the fall distance becomes long. However, when the shock absorbing member 10 of the present application and the stopper shaft 13 are broken, the drop distance is not made longer and the lower distance is set. It prevents a crash without colliding with a structure.

[0007]

[Effect of device]

 As described above, the winder M of the present application has a simple structure, and in the event of a fall, the rope-shaped belt R is pulled out, and the cushioning member is wound to absorb the drop impact load. Even if the stopper shaft 13 is broken, the drop impact load is absorbed, the bounce at the time of falling is reduced, and the body is less likely to be hurt by a collision with a structure or the like. By disposing a plurality of drop impact load absorbing devices as described above, the conventional belt-type shock absorber S can be eliminated, and the weight and cost can be reduced, and the safety belt can be easily handled. To do.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a bobbin of the present application.

FIG. 2 is a front view of the belt wound around the bobbin of the present application when it is pulled out.

FIG. 3 is a front view of the cushioning member of the present application in a cushioned state.

FIG. 4 is a front view immediately after the stopper shaft of the present bobbin is broken.

FIG. 5 is a front view of the winder of the present application with the upper cover and the spiral spring removed.

FIG. 6 is a bottom view of the main body of the winding machine of the present application.

FIG. 7 is a perspective view of the winding machine of the present application.

FIG. 8 is a front view of a safety belt using the winder of the present application.

FIG. 9 is a front view of a conventional safety belt.

FIG. 10 is a front view of a conventional safety belt.

[Explanation of symbols]

 1 frame 2 bobbin 3 spiral spring 4 bobbin core tube 5 protrusion 6 bobbin side plate 7 receiving hole 8 bobbin shaft 9 notch 10 buffer member 11 space 12 reinforcing shaft 13 stopper shaft B belt F hook M winder R rope belt S Buffer R1 Ring

Claims (1)

[Scope of utility model registration request] 1. A spiral spring having a belt R having one end fastened to a bobbin 2 axially arranged between both side plates of a U-shaped frame 1.
In a belt winder that can be pulled out and rewound freely against the elastic force of 3, the bobbin side plates 6 are fixed to both ends of a bobbin core cylinder 4 having a substantially C-shaped cross section, and the bobbin core cylinder 4 is surrounded. A cushioning member 10 made of a soft material and having a space 11 for deformation is provided, and a reinforcing shaft 12 and a stopper shaft 13 are provided between the bobbin side plate 6 at an eccentric position with respect to the bobbin shaft 8, and the cushioning member 10 and the reinforcing shaft 1 are provided.
2. The belt R is sequentially wound around the stopper shaft 13, and when falling, the belt R wound in layers is pulled out, and when the load exceeds a predetermined value, the stopper shaft 13 is broken, and the drop impact load is absorbed and relaxed. A belt winding machine for safety belts that is characterized by: