JP2022092956A - Portable object fall prevention tool - Google Patents

Abstract

To prevent a portable object fall prevention tool improved to allow a downsizing.SOLUTION: A portable object fall prevention tool 100 comprises a string winding structure 1, a string-shaped body 2, a string pulling end 2a, an impact absorption member 7, a body attachment tool 8, a portable object attachment part 9 and coupling tools 13 and 14. Any portable object is attached to the portable object attachment part 9. The impact absorption member 7 fulfills an elastic telescopic function to a tension. The impact absorption member 7 comprises a root part 7a, an intermediate part 7b and a tip part 7c. The intermediate part 7b is interposed between the root part 7a and the tip part 7c. The root part 7a and the tip part 7c are strip-shaped elastic parts and the intermediate part 7b in a fine elastic rope-shaped is interposed therebetween.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a portable fall protection device.

For example, as described in Japanese Patent No. 4524464, a tool fall prevention tool provided with a mechanism for absorbing an impact when a tool is dropped is known. In paragraphs 0004 and 0005 of this publication and FIG. 8, the problems of impact force and bounce due to dropping of the tool are described.

Patent No. 4524464

In the technique according to the above patent document, the reel mechanism including the urging member (spring) around the reel is improved for the purpose of realizing an excellent shock absorbing mechanism. However, in order to improve the shock absorbing function, the reel mechanism including the urging member tends to be complicated, and as a result, the tool fall prevention tool tends to be large.

The present disclosure provides a portable fall protection device that has been improved so that it can be miniaturized.

One aspect of the portable object fall prevention device is to store a main body mounting tool, a string-like body, a reel for winding the string-like body, an urging member for giving an urging force to the reel, and the reel and the urging member. A string winding structure having a case, a portable object attachment portion for attaching a portable object, and outside the string winding structure, between the main body mounting tool and the string-shaped body, and the main body mounting. A shock absorbing member provided at any position between the tool and the case, between the string-like body and the portable object mounting portion, and between the case and the portable object mounting portion. And prepare.

As a first aspect, the shock absorbing member may be interposed between the main body mounting tool and the string-like body. As a second aspect, the shock absorbing member may be interposed between the main body mounting tool and the case of the string winding structure. As a third aspect, the shock absorbing member may be interposed between the string-like body and the portable object attachment portion. As a fourth aspect, the shock absorbing member may be interposed between the case of the string winding structure and the portable object mounting portion. The number of the above-mentioned shock absorbing members may be one or a plurality. From the plurality of installation positions in each of the above first to fourth aspects, one or a plurality of arbitrary positions may be selected to provide the shock absorbing member.

By providing a shock absorbing member on the outside of the string winding structure, the string winding structure can be miniaturized.

It is a perspective view which shows the appearance structure of the portable object fall prevention tool. It is a schematic diagram for demonstrating an example of the attachment method of the portable object fall prevention device.

FIG. 1 is a perspective view showing an external configuration of a portable object fall prevention device 100. The portable object fall prevention device 100 includes a string winding structure 1, a string drawer end 2a, a shock absorbing member 7, a main body mounting tool 8, a portable object mounting portion 9, and connecting tools 13 and 14. .. Any portable object can be attached to the portable object attachment portion 9.

The main body mounting tool 8 is attached to the upper part of the string winding structure 1 via the connecting tool 13. When the worker wears the portable object fall prevention device 100, a safety rope mounting portion such as a ring holder may be provided on the work belt or the like, and the main body mounting tool 8 may be mounted on the safety rope mounting portion (FIG. FIG. 2).

The string winding structure 1 includes an outlet 1a. The outlet 1a is an opening provided in a part of the string winding structure 1. In the embodiment, the outlet 1a is provided on the opposite side of the main body mounting tool 8 in the string winding structure 1 as an example.

A "reel (not shown)" and a string-shaped body 2 wound around the reel are housed inside the string winding structure 1. The string pull-out end 2a is connected to the tip of the string-shaped body 2. By pulling the string pull-out end 2a in the direction of the arrow A, the string-shaped body 2 can be pulled out from the inside of the string winding structure 1 to an arbitrary length via the pull-out port 1a. Although FIG. 1 illustrates a state in which the string-shaped body 2 is slightly pulled out, the total length of the string-shaped body 2 is much longer than that shown in FIG. 1. The string drawer end 2a has a diameter larger than the opening diameter of the outlet 1a so as to stop at the outlet 1a.

The connecting tool 14 connects the string pull-out end 2a and the root portion 7a of the shock absorbing member 7.

In the embodiment, as an example, the shock absorbing member 7 is constructed as a "guide rope". The shock absorbing member 7 is also an example of a "long shock absorbing member" constructed so as to have a certain length. In the embodiment, specifically, the shock absorbing member 7 includes a root portion 7a, an intermediate portion 7b, and a tip portion 7c. The root portion 7a and the tip portion 7c are strip-shaped portions, respectively, and an intermediate portion 7b, which is a relatively thin and elastic rope material, is interposed between them. The intermediate portion 7b is relatively thinner, more flexible, and longer than the root portion 7a and the tip portion 7c, respectively. The intermediate portion 7b can be bent at an arbitrary angle and can be displaced in the twisting direction.

A portable object mounting portion 9 is attached to the tip portion 7c of the shock absorbing member 7. A portable object to be fall-prevented (see reference numeral T in FIG. 2) can be attached to the portable object attachment portion 9. The portable item may be, for example, a tool.

The main body mounting tool 8 and the portable object mounting portion 9 may be Naskan as an example. As the main body mounting tool 8 and the portable object mounting portion 9, a metal or resin mounting tool having a known structure can be arbitrarily used.

In the embodiment, even if the operator drops the portable object attached to the portable object attachment portion 9, the impact absorbing member 7 can absorb the impact at the time of dropping. This has the advantage of suppressing the rebound of the portable object. There is also an advantage that the breakage of the string-shaped body 2 due to the drop impact of the portable object can be suppressed. Further, the arrow A in FIG. 1 points to a direction in which the portable object mounting portion 9 is pulled away from the string winding structure 1 (in other words, a string pulling out direction), and a tensile load is generated in this direction when falling. The shock absorbing member 7 exerts an expansion / contraction function with respect to pulling in the direction of arrow A in FIG.

As described above, the shock absorbing member 7 is constructed as a "guide rope" having a certain length and elasticity. As a result, when the user puts the portable object connected to the portable object attachment portion 9 into the waist bag or the like, the string-shaped body 2 is not pulled out, so that the winding tension is not applied and the storage is smooth. There is.

Hereinafter, specific examples of the external configuration and the internal configuration of the string winding structure 1 will be described. The string winding structure 1 may be provided with a metal case as an example, or may be provided with an aluminum die-cast case as a specific example. By using a metal case for the exterior of the string winding structure 1, a robust structure can be obtained. The string winding structure 1 is a compact size that does not take up space around the waist. As a modification, the string winding structure 1 may be provided with a resin case, for example, an ABS case.

The string winding structure 1 has the following internal structure. The string winding structure 1 includes a string-shaped body 2, a reel for winding the string-shaped body 2, and an urging member for giving an urging force to the reel. The urging member may be, for example, a spiral spring. Various shapes, members, and mechanisms of this type are already known and are not new matters, and are not shown in the present disclosure.

The tip of the string-shaped body 2 is connected to the string drawer end 2a. The reel is an automatic take-up type. The reel is rotatably housed inside the string winding structure 1 and winds the string-shaped body 2. The spiral spring is a winding mechanism that winds the reel and urges it in the rotational direction.

The string-shaped body 2 may be, for example, various metal wires, for example, a steel wire, a stainless wire, or a piano wire. The metal string-like body has the advantages of being resistant to fire and heat, and also having excellent abrasion resistance and cutting resistance. As a modification, the string-shaped body 2 may be made of a flat woven string, and the material of the woven string in that case may be a synthetic fiber such as nylon or polyester.

The reel includes a reel body and a spring holding portion. A shaft is provided inside the case of the string winding structure 1, and the string-shaped body 2 is wound by rotating the reel body around this shaft. The spring holding portion is, for example, a cylindrical portion provided concentrically on one side in the axial direction.

The spiral spring is a so-called spiral spring in which a strip-shaped steel material is wound in a spiral shape. One end of the spiral spring is locked to the shaft, and the other end is locked to the spring holding portion of the reel. A spiral spring is wound around the shaft as the reel (spring holding portion) rotates in the drawing direction due to the pulling out of the string-shaped body 2. The spiral spring is a kind of urging member that generates an urging force that urges the reel in the winding direction of the string-shaped body 2. In the embodiment, as an example, a reel mechanism capable of automatically winding a reel is constructed by using a single spiral spring having a uniform thickness. As a result, the reel mechanism can be simplified, so that the string winding structure 1 can be dramatically reduced in size.

The portable object fall prevention device 100 of the embodiment configured as described above is used as follows. FIG. 2 is a schematic diagram for explaining an example of how to attach the portable object fall prevention device 100. In FIG. 2, as an example, a safety rope mounting portion (not shown) such as a ring holder is provided on the work belt 201 of the worker 200, and the main body mounting tool 8 on the upper part of the string winding structure 1 is provided on the safety rope mounting portion. Is shown in a simplified manner. When using the portable object T arbitrarily taken out from the waist bag 202, the worker 200 pulls the portable object T so as to pull the portable object T away from the string winding structure 1 as needed. The portable object T is, for example, a tool. In response to this pull, the portable object mounting portion 9, the shock absorbing member 7, the connecting tool 14, and the string pull-out end 2a are pulled in the direction of the arrow A in FIG. When a force for pulling out the string-shaped body 2 from the string winding structure 1 in the direction of arrow A acts, the reel rotates in the drawing rotation direction. As the reel rotates, the string-shaped body 2 connected to the string drawing end 2a is pulled out from the string winding structure 1 by an arbitrary length.

If the worker 200 accidentally drops the portable object T from his / her hand, the impact absorbing member 7 can absorb the impact caused by the dropping of the portable object T, so that the impact is alleviated and attenuated. This has the advantage of being able to suppress the jumping up of the portable object T due to the drop impact. There is also an advantage that the breakage of the string-shaped body 2 due to the drop impact of the portable object T can be suppressed.

In the embodiment, various modifications described below may be applied. From the following deformation group, one kind or a plurality of kinds of arbitrary deformations may be selected, and the deformations may be applied to the portable object fall protection device 100 according to the embodiment.

(Variation example: variation of installation position of shock absorbing member)
In the embodiment, as shown in FIG. 1, the shock absorbing member 7 is provided between the string-shaped body 2 and the portable object mounting portion 9. However, as a modification, the shock absorbing member 7 may intervene between any two of the plurality of components of the portable object fall protection device 100. By interposing the shock absorbing member 7 in the middle of each component from the main body mounting tool 8 to the portable object mounting portion 9, the drop impact of the portable object T is alleviated. As an example, the shock absorbing member 7 may be interposed between the main body mounting tool 8 and the string-shaped body 2. In this case, the main body mounting tool 8, the shock absorbing member 7, the string-shaped body 2, the string winding structure 1 for winding the string-shaped body 2, and the portable object connected to the case of the string winding structure 1. The portable object fall prevention device 100 may be constructed so that the attachment portion 9 and the attachment portion 9 are connected in series in this order.

As another example, the shock absorbing member 7 may be interposed between the main body mounting tool 8 and the case of the string winding structure 1. In this case, the main body mounting tool 8, the shock absorbing member 7, the case of the string winding structure 1, the string-shaped body 2 pulled out from the string winding structure 1, and the portable object attachment connected to the string-shaped body 2. The portable object fall prevention device 100 may be constructed so that the parts 9 and the parts 9 are connected in series in this order.

As yet another example, the shock absorbing member 7 may be interposed between the case of the string winding structure 1 and the portable object mounting portion 9. In this case, the main body mounting tool 8, the string-shaped body 2, the case of the string winding structure 1 that winds up the string-shaped body 2, the shock absorbing member 7, and the portable object mounting portion 9 are in this order. The portable object fall prevention device 100 may be constructed so as to be connected in series with.

The number of the shock absorbing members 7 may be one or a plurality. Although a plurality of installation positions of the shock absorbing member 7 are disclosed in each of the embodiment and the above three modifications, the impact is applied to one or a plurality of arbitrary installation positions selected from the plurality of installation positions. The absorbing member 7 can be provided.

(Variation example: Variation of configuration of shock absorbing member)
The specific structure, material, and shape of the shock absorbing member 7 according to the embodiment are not limited. The shock absorbing member 7 may have a function of absorbing a shock applied to the portable object mounting portion 9, and various members such as its structure, material, shape, elasticity or elasticity can be applied. ..

As the material of the shock absorbing member 7, various materials having a higher elastic expansion / contraction function than the string-shaped body 2 along the tensile direction may be appropriately used. The diameter of the shock absorbing member 7 may be larger than that of the string-shaped body 2 wound by the string winding structure 1, but can be appropriately determined according to the material used, and may be smaller than that of the string-shaped body 2. good. Even when the string-shaped body 2 is a relatively thick material such as a woven string, it is not prevented that the diameter of the shock absorbing member 7 is smaller than that of the string-shaped body 2.

In the embodiment, as an example, the intermediate portion 7b is constructed of a stretchable rope material. As the shock absorbing member 7, any known rope material having a predetermined length may be used. Rope is also referred to as "rope", "rope", "durable rope twisted from fiber or steel wire", or "rope". The rope is also an example of a long shock absorbing member in the embodiment. Known rope materials include, for example, chemical fiber ropes, natural fiber ropes, glass fiber ropes and wire ropes. As the chemical fiber rope, any one of a nylon rope, a polyester rope, a polypropylene rope, a polyethylene rope, a vinylon rope, and a blended yarn rope of vinylon and polyester may be used. As the natural fiber rope, for example, a cotton rope or a linen rope may be used. As the wire rope, a carbon steel rope or a stainless steel rope may be used.

As a modification, a rubber rope may be used as the shock absorbing member 7. The shock absorbing member 7 may be a rubber-like elastic body having any other shape instead of the rope shape. The rubber material may be synthetic rubber or natural rubber. The rubber material is not limited, and for example, natural rubber (NR), styrene butadiene rubber (SBR), chlorobrene rubber (CR), acrylonitrile rubber (NBR), butyl rubber (IIR), ethylene propylene rubber (EPDM), urethane rubber ( The material of the shock absorbing member 7 may be arbitrarily selected from various rubber materials such as U) and silicone rubber (Si). For example, if the need for heat resistance is high, a material having high heat resistance, for example, silicone rubber may be selected accordingly. In addition, a desired material may be selected according to needs such as fire resistance and weather resistance.

As a modification, the shock absorbing member 7 may be a metal spring (for example, a coil spring or a spring). If the shock absorbing member 7 is made of metal, it has the advantages of high fire resistance, heat resistance, durability, and the like. The member having a length made of a metal spring is also an example of a long shock absorbing member in the embodiment.

As a modification, the shock absorbing member 7 may be a belt. As the material of the belt, various known materials can be arbitrarily used, and for example, natural leather, synthetic leather, various chemical fibers listed above, and various rubber materials listed above may be used. The belt having a length is also an example of a long shock absorbing member in the embodiment.

The shock absorbing member 7 of the embodiment has different thicknesses in the root portion 7a, the tip portion 7c, and the intermediate portion 7b, but the present disclosure is not limited to such a structure. As a modification, the shock absorbing member 7 may have a uniform thickness. As another modification, the shock absorbing member 7 may be a hollow tube or a curl cord, and those having a length thereof are included in an example of the long shock absorbing member in the embodiment. A curl cord is a cord wound in a curl shape, and is also called a telescopic electric wire. As another modification, the shock absorbing member 7 does not necessarily have to be a member having a length such as a rope. For example, the shock absorbing member 7 may be constructed in any three-dimensional shape such as a prism, a cone, an annulus, a sphere, and an ellipsoid. In this case, the function as a guide rope may be omitted.

In the embodiment, the string winding structure 1 is not provided with the "lock mechanism". Since there is no locking mechanism, the inside of the string winding structure 1 is such that when the force for pulling the string-shaped body 2 is released, the reel always tries to completely wind the string-shaped body 2 to the string pull-out end 2a without stopping in the middle. The structure is built.

In the embodiment, the case where the portable object T to be fall-prevented is a tool is described. However, as a modification, any other article may be carried. The portable object T may be, for example, a mobile terminal, a camera, or various keys. The mobile terminal may be a mobile communication terminal such as a smartphone or a tablet terminal. The key may be, for example, a key for a front door or a key for an automobile.

According to the embodiment described above, the shock absorbing member 7 is provided outside the string winding structure 1. As a result, the drop impact of the portable object T can be mitigated without being restricted by the structure of the reel and the operating mechanism of the string-shaped body 2. The technical approach of the present disclosure of arranging a simple shock absorbing means on the outside of the string winding structure 1 in the portable object fall prevention device 100 is an epoch-making one not found in the existing technical level. ..

Further, in the embodiment, the shock absorbing member 7 is a "long shock absorbing member" that is interposed between the string-shaped body 2 and the portable object mounting portion 9 and has a certain length. Since the long shock absorbing member has a certain length, the worker 200 can easily handle the portable object T. The long shock absorbing member is, for example, "a length that allows the worker 200 to easily handle the portable object T around the waist with the string-shaped body 2 not pulled out from the reel or slightly pulled out". For example, it may be constructed so as to have a length sufficient for the worker 200 to easily store the portable object T such as a tool in the waist bag to the portable object fall prevention device 100. .. The member connecting the shock absorbing member 7 and the string-shaped body 2 may be a "twisting metal fitting". The swivel fitting has two ring portions rotatably connected to each other. The twisted return metal fitting makes it difficult for the pulled-out string-shaped body 2 to be entangled.

Further, in the embodiment, since the self-winding reel mechanism including the urging member such as a spring does not have a lock mechanism, the reel mechanism can be further simplified, and there is an advantage that the string winding structure 1 can be easily made smaller or lighter. be. Even if the lock mechanism is not provided, the shock absorbing member 7 has a certain length, so that it is easy to handle portable objects in the vicinity of the waist bag 202. Therefore, there is an advantage that the string winding structure 1 can be further miniaturized and the convenience of handling portable objects can be ensured.

Further, in the embodiment, the shock absorbing member 7 may be a metal spring member or a heat-resistant rubber elastic member. This has the advantage that the portable item fall protection device 100 can be used even in a harsh environment.

Further, the portable object fall prevention device 100 of the embodiment also has an advantage from the following viewpoints. In recent years, due to heightened safety awareness at construction sites, measures to prevent tool falling have become mandatory. Many users (workers) who use tool fall protection tools include black kites and scaffolders. Since these users (workers) often perform relatively dynamic work, there is a high demand for products with robust specifications. In this respect, in the embodiment, the robustness can be satisfied by making the string winding structure 1 made of metal. Further, by using the string-shaped body 2 as a metal wire, there is an advantage that it is resistant to fire and heat and has excellent abrasion resistance and cutting resistance, so that it can meet the needs even in a relatively harsh environment. In addition, when used in places such as construction sites, it has the great advantage of being a compact size that does not take up space around the waist when worn. Further, in the embodiment, since it is a self-winding reel type using a spring, there is an advantage that the hanging string-like body (wire) is not likely to be caught and is easy to move.

1 String take-up structure 1a Exit 2 String-like body 2a String drawer end 7 Impact absorbing member (long impact absorbing member)
7a Root part 7b Intermediate part 7c Tip part 8 Main body mounting tool 9 Carrying object mounting part 13, 14 Connecting tool 100 Carrying object fall prevention tool A Arrow (string pulling direction)
T personal belongings

Claims (5)

With the main body attachment
A string winding structure having a string-shaped body, a reel for winding the string-shaped body, an urging member for applying an urging force to the reel, and a case for accommodating the reel and the urging member.
A portable object mounting part for attaching a portable object,
On the outside of the string winding structure, between the main body mounting tool and the string-shaped body, between the main body mounting tool and the case, and between the string-shaped body and the portable object mounting portion. , A shock absorbing member provided at any position between the case and the portable object mounting portion, and
A portable fall protection device equipped with. The portable object fall prevention device according to claim 1, wherein the shock absorbing member is provided between the string-shaped body and the portable object mounting portion. The portable object fall prevention device according to claim 1 or 2, wherein the shock absorbing member includes a long shock absorbing member. When the main body attachment is attached around the waist of the worker, the worker can handle the portable object attached to the portable object attachment portion around the waist without pulling out the string-shaped body from the reel. The portable object fall prevention device according to claim 3, wherein the long shock absorbing member is constructed so as to have a length. The string-like body is a metal wire,
The portable object fall prevention device according to any one of claims 1 to 4, wherein the shock absorbing member has higher elasticity than the string-shaped body.

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