JPH0588557U - Shock absorber for fall prevention safety belt - Google Patents

Abstract

(57) [Summary] [Purpose] The case is made flexible and lightweight by connecting the metal fittings and the ring of the belt passing part of the shock absorber for the fall prevention safety belt. [Structure] A belt insertion part 1 is provided on the back side, a fixing ring 2 is provided below the belt insertion part 1, and side pieces 3 and 3 are provided so as to project from the front side end, and the side pieces 3 and 3 are rotated to the lower end parts. The moving ring 4 is penetrated by the shaft 5, the case 6 covering the outer periphery of the side piece is also pivotally supported, and the rotating ring 4 and the fixed ring 2 are connected by the drop shock absorbing member 7, so that the side piece 3, It has a structure in which three parts are broken. [Effect] The load during normal use is applied to the side pieces 3 and 3 and the side pieces 3 and 3 are broken when a high impact load is applied when dropped, so the case can be made flexible and thin and lightweight. Can be converted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This proposal is a drop impact shock absorber for an auxiliary rope that is used in combination with a safety belt that is worn on the waist by workers at high altitudes to prevent falls.

[0002]

[Prior Art]

 Conventionally, as shown in Fig. 6, the auxiliary rope has a rope and a shock absorber arranged between a small hook (the ring attachment side of the safety belt) and a large hook (the step bolt attachment side). This shock absorber is a synthetic fiber narrow woven belt that is folded in the longitudinal direction, superposed, and sewn into multiple zigzags with a sewing thread, which is bulky and heavy, making it difficult to use it around the waist. It was

[0003]

[Problems to be solved by the device]

 In order to eliminate the drawbacks of conventional products, a device as shown in Fig. 7 was devised. The load applied to the ring is the strength of the case, and the strength of the fall impact absorbing member up to the dissociation of the suture thread. Because of this, the case was thick and large, and it was still in the development stage due to its heavy weight. Therefore, the object of the present invention is to improve the above-mentioned object and to reduce the bulk and weight.

[0004]

[Means for Solving the Problems]

 In this plan, the conventional side piece is extended, a hole is provided in the side piece 3,3 part, the shaft 5 supporting the rotating ring 4 is penetrated, and the side piece 3,3 part has strength. The case can be made thinner and lighter.

[0005]

【Example】

 Explaining the embodiment of the present invention in detail, the belt insertion part 1 is provided on the back side, and the fixing ring 2 is tacked to the lower part of the belt insertion part 1 and the side pieces 3 and 3 are provided so as to project from the end on the front side. The rotating ring 4 is supported by the shaft 5 through the lower ends of the pieces 3 and 3, and the case 6 covering the outer periphery of the side piece is also supported. The side pieces 3 and 3 are broken by a high impact load at the time of dropping, and the entangled warp yarns of the drop impact absorbing member 7 are dissociated to alleviate the drop impact load.

The drop impact absorbing member 7 of the embodiment of the present invention uses a synthetic fiber such as nylon or polyester to weave an upper belt and a lower belt at the same time, and a weft of the upper belt is formed by weaving warp during the weaving. The weft yarn of the lower belt is relatively entangled to form a superposed portion of a predetermined length, and then the entangled warp yarn is divided into two and weaved into the upper and lower belts, respectively, and the upper belt and the lower belt are woven. Is a shock-absorbing belt in which a separating portion having a predetermined length is formed by separating the above-mentioned material and the overlapping portion and the separating portion are alternately and continuously woven. The separated portion of the impact absorbing belt is cut, wound around a fixed ring and a rotating ring, superposed, and sewn. If a high impact load is applied at the time of dropping, the impact is absorbed by cutting and dissociation of the entangled warp yarns in the overlapping portion, and the impact on the body of the worker is alleviated.

[0007]

[Effect of the device]

 Since the shock absorber of the embodiment of the present invention is used by inserting it into the outer fastening belt of the safety belt, it can be used without any extra care as if it were a braid or rope entangled at the waist like a conventional product. . In addition, in the conventional product, the load during normal use (low load to keep the weight on the rope) was clamped by the strength of the case, so the case was hard, thick and large, and heavy, but this proposal Since the side pieces 3 and 3 bear the load during normal use, the case may be flexible and thin, small and lightweight.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment of the present invention with a part cut away.

FIG. 3 is a right side view of the embodiment of the present invention with a part cut away.

FIG. 4 is a fall state diagram of the embodiment of the present invention.

FIG. 5 is a mounting state diagram of the embodiment of the present invention.

FIG. 6 is a state diagram in which a conventional auxiliary rope is attached.

FIG. 7 is a right side view of a conventional shock absorber with a part thereof cut away.

[Explanation of symbols]

 1 Belt insertion part 2 Fixing ring 3 Side piece 4 Rotating ring 5 Axis 6 Case 7 Drop impact absorbing member

Claims (1)

[Scope of utility model registration request] 1. A belt insertion portion 1 is provided on the back side, a fixing ring 2 is provided below the belt insertion portion 1, and side pieces 3 and 3 are provided so as to project from a front surface side end, and lower ends of the side pieces 3 and 3 are provided. In addition to pivoting the rotating ring 4 through the shaft 5, the case 6 covering the outer periphery of the side piece is also supported, and the rotating ring 4 and the fixed ring 2 are connected by the drop impact absorbing member 7, Shock absorber for a fall prevention safety belt, characterized in that the side pieces (3, 3) are broken.