JP2014159061A - Tool fall prevention tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool fall prevention tool which can prevent a central part of a rope member from being caught by a projection or the like.SOLUTION: In a tool fall prevention tool which includes a first connecting body 5 connected to the worker side, a second connecting body 6 connected to a tool 4, and a rope member 8 connecting the first connecting body 5 and the second connecting body 6 to each other, the rope member 8 has an expandable/contractible spiral cord 9 in a part of the longitudinal direction thereof, and at least a central part of the rope member 8 is bendable in a two-folded manner. A chain 11 is arranged so as to extend in a range from one end in the longitudinal direction of the rope member 8 to a part exceeding the central part of the rope member 8 in a state where the spiral cord 9 is contracted.

Description

  The present invention relates to a tool fall prevention tool that prevents a tool from falling from an operator side.

For example, a tool fall prevention tool that prevents the tool from falling includes a first coupling body coupled to an operator's waist belt, a second coupling body coupled to the tool, and a first coupling. There is a thing provided with the cable member which connects a body and the 2nd connection object.
In this type of conventional tool fall prevention device, the rope member is constituted by an elastic spiral cord, or the rope member is constituted by an elastic spiral cord and a linear cord, and one end of the rope member The part is connected to the operator's waist belt via the first connecting body, the other end of the rope member is connected to the tool via the second connecting body, and this tool is provided on the side of the waist belt. The tool is stored and held in the tool sack, and when working at a high place etc., the tool is taken out from the tool sack, and even if the tool falls off the hand at this time, the tool works with the rope member. In some cases, the tool is prevented from dropping greatly from a high place by being connected to the waist belt of the person (for example, Patent Document 1 and Patent Document 2).

Japanese Utility Model Publication No. 63-113581 JP 2012-232403 A

However, in the conventional case, when the tool is stored and held in the tool sack of the waist belt, the central portion in the longitudinal direction of the rope member (the middle portion of the spiral cord or the linear cord) is curved downward with a large arc. Therefore, there is a problem that the center portion of the rope member is easily caught by the protrusions or the like when the worker moves around or during the work, which disturbs the work.
In view of the above problems, an object of the present invention is to provide a tool fall prevention tool capable of preventing the central portion of a rope member from being caught by a projection or the like.

Specific means for solving the problems in the present invention are as follows.
The technical means of the present invention for solving this technical problem includes a first connector 5 connected to the worker side, a second connector 6 connected to the tool 4, a first connector 5 and a second connector. In the tool fall prevention tool provided with the cable member 8 which connects the connection body 6,
The strip member 8 has a retractable spiral cord 9 in a part in the longitudinal direction, and at least a central portion of the strip member 8 is bent in a double-folded manner.

Further, according to another technical means of the present invention, the rope member 8 has a chain 11 that flexibly connects a plurality of ring bodies 39 in addition to the spiral cord 9, and the chain 11 is a spiral. When the cord 9 is in the contracted state, the cord member 8 is disposed so as to extend from one end portion in the longitudinal direction of the cord member 8 to the range beyond the center portion.
According to another technical means of the present invention, the cable member 8 has a retractable spiral cord 9 on one end side and a linear cord 43 on the other end side. The linear cord 43 is set to have substantially the same length, and the spiral cord 9 and the linear cord 43 are connected to each other by a chain 11 that flexibly connects a plurality of ring bodies 39 at the center of the rope member 8. There is in point.

  According to another technical means of the present invention, an inner loop portion 33 is formed at the end of the spiral cord 9 on the linear cord 43 side, and an inner loop is formed at the end of the linear cord 43 on the spiral cord 9 side. Part 47 is formed, the inner loop part 33 of the spiral cord 9 is connected to the ring body 39 at one end of the chain 11, and the inner loop part 47 of the linear cord 43 is connected to the ring body at the other end of the chain 11. 39 is connected to the chain.

According to another technical means of the present invention, the rope member 8 has a first spiral cord 9a that can be expanded and contracted on one end side and a second spiral cord 9b on the other end side, The first spiral cord 9a and the second spiral cord 9b in a contracted state are set to have substantially the same length, and the first spiral cord 9a and the second spiral cord 9b at the center portion of the rope member 8 connect the plurality of ring bodies 39 to each other. It is in the point connected with the chain 11 which is connected so that bending is possible.

  Another technical means of the present invention is that an inner loop portion 33 is formed at an end of the first spiral cord 9a on the second spiral cord 9b side, and the second spiral cord 9b is on the first spiral cord 9a side. The inner loop portion 33 is formed at the end of the first spiral cord 9a, the inner loop portion 33 of the first spiral cord 9a is connected to the ring body 39 at one end of the chain 11, and the inner loop portion 33 of the second spiral cord 9b is connected to the ring body 39. The chain 11 is connected to the ring body 39 at the other end of the chain 11.

  According to the present invention, since at least the central portion of the rope member can be bent in two, the center of the rope member in the longitudinal direction when the tool is stored and held in the tool sack of the waist belt. The part is folded in half or bent into a V shape and hangs downward, and the central portion in the longitudinal direction of the cord member is bent by a large arc and hangs downward as in the past. Since it can prevent, it can prevent effectively that the center part of a rope member is caught in a projection or the like.

It is a whole front view of the fall prevention tool which shows 1st Embodiment of this invention. It is side surface sectional drawing of the spiral cord. It is a perspective view of the state which connected the tool to the waist belt with the fall prevention tool. It is a whole front view of the fall prevention tool which shows 2nd Embodiment. It is side surface sectional drawing of the same linear cord. It is a whole front view of the fall prevention tool which shows 3rd Embodiment. It is a whole front view of the fall prevention tool which shows 4th Embodiment. It is a whole front view of the fall prevention tool which shows 5th Embodiment. It is a whole front view of the fall prevention tool which shows 6th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention. 1 and 2, the tool fall prevention tool 1 includes a first connector 5 connected to the operator's waist belt 3 (operator side), a second connector 6 connected to the tool 4, An elongated cable member 8 that connects the first connector 5 and the second connector 6 is provided. The rope member 8 has a retractable spiral cord 9 on the first connecting body 5 side and a chain 11 on the second connecting body 6 side.

Here, as shown in FIG. 3, the waist belt 3 (safety belt) to which the fall prevention device 1 is attached includes a belt main body 13 that is detachably attached to the operator's waist. A plurality of tool sack 15 for storing and holding a plurality of tools 4 such as a hammer, a monkey wrench, a screwdriver, a pliers, and an electric drill are attached.
The first connecting body 5 is constituted by a metal fitting called a so-called eggplant, and the first connecting body 5 includes a hook 17 and a closing piece 18 for closing the opening of the hook 17 so as to be freely opened and closed. 20 and a connecting ring 22 rotatably supported around the mounting shaft 21 on the tool body 20, and the closing piece 18 is formed in a ring shape by an elastic wire and closes the opening of the hook 17 (in the figure). Both ends thereof are engaged with the tool body 20 so as to generate a biasing force in the direction of arrow a). The first connecting body 5 is detachably connected to a retaining ring 14 of the operator's waist belt 3 via a hook 17.

The second connection body 6 is formed to be slightly smaller than the first connection body 5 and is constituted by a metal fitting called a so-called NASKAN. The second connection body 6 is the case of the first connection body 5. In the same manner, a tool body 20 having a hook 17 and a closing piece 18 for closing the opening of the hook 17 so as to be openable and closable, and a connecting ring 22 rotatably supported around the mounting shaft 21 by the tool body 20 are provided. The closing piece 18 is formed in a ring shape by an elastic wire, and its both end portions are shifted with respect to the tool body 20 so as to generate an urging force in the direction of closing the opening of the hook 17 (the direction of arrow a in the figure). Are combined. The second connecting body 6 is detachably connected to the tool 4 through a connecting ring 25 by a hook 17.

The connecting ring 25 has a retaining member 27 and an annular connecting cord 28 protruding from the retaining member 27. The connecting cord 28 is inserted into the mounting hole 24 formed in the tool 4, and the hook 17 of the second connecting body 6 is engaged with the inserted connecting cord 28, so that the second connecting body 6 is connected via the connecting ring 25. Are connected to the tool 4.
As shown in FIG. 2, the spiral cord 9 is formed by covering a core wire 29 formed by twisting a large number of thin stainless steel wires with a polyurethane covering 30 and winding it in a spiral shape, and pulling it in the longitudinal direction. It is stretched about 5 to 8 times by elastic deformation, and returns to its original reduced state by releasing its tensile force.

An inner loop portion 33 is formed at an end portion (inner end portion) of the spiral cord 9 on the chain 11 side, and an outer loop portion 34 is formed at an end portion (outer end portion) of the spiral cord 9 on the first connector 5 side. ing.
The outer loop portion 34 of the spiral cord 9 is connected to the connection ring 22 of the first connecting body 5 in a chain shape, so that the outer end portion of the spiral cord 9 and the first connecting body 5 are flexibly connected. .
As shown in FIG. 2, the inner loop portion 33 and the outer loop portion 34 of the spiral cord 9 are folded in two at the end portion side of the spiral cord 9, leaving the ring-shaped bent portion. It is formed by externally fitting and crimping (crimping) a metallic cylindrical body 36 to the bent end portion and the bent base portion. A flexible synthetic resin-coated cylindrical body 37 is externally fitted on the cylindrical body 36.

  The chain 11 is formed by connecting a large number of ring bodies 39 made of metal or synthetic resin so as to be bent, and the ring body 39 at one end portion (outer end portion) of the chain 11 is chain-like to the connection ring 22 of the second connection body 6. As a result, the outer end portion of the chain 11 is flexibly connected to the second connecting body 6. Further, the ring body 39 at the other end portion (inner end portion) of the chain 11 is connected to the inner loop portion 33 of the spiral cord 9 in a chain shape, whereby the inner end portion of the spiral cord 9 and the inner end portion of the chain 11 are connected. And are connected flexibly.

  When the spiral cord 9 is contracted, the chain 11 is disposed so as to extend from the end portion of the cord member 8 on the second connecting body 6 side to the center portion. Therefore, the chain 11 can be bent in two or V-shaped between the adjacent ring bodies 39, so that the chain 11 extends from the end of the cord member 8 on the second connecting body 6 side beyond the center portion. By being arranged so as to extend over the range, the rope member 8 can be bent in a double-folded shape or a V-shape at small intervals over a range exceeding the central portion from one end portion in the longitudinal direction. .

  According to the first embodiment, when working at a high place, for example, by engaging the hook 17 of the first connecting body 5 with the retaining ring 14 of the waist belt 3 attached to the waist of the operator, a plurality of Are connected to a plurality of tools 4 such as a hammer, a monkey wrench, a screwdriver, a pliers, and an electric drill, respectively. The plurality of tools 4 are connected to each other via the connecting ring 25 and stored and held in the tool sack 15 of the waist belt 3.

When working, the desired tool 4 may be taken out from the tool sack 15 and the tool 4 may be held in the hand. At this time, the spiral cord 9 is pulled in the longitudinal direction and stretched about 5 to 8 times by elastic deformation, so that the work can be smoothly performed with the tool 4 held in the hand.
At this time, even if the tool 4 is unexpectedly detached from the hand, the tool 4 is connected to the operator's waist belt 3 by the rope member 8, so that the tool 4 is surely dropped from a high place. Can be prevented.

  Further, by arranging the chain 11 so as to extend from the end of the cord member 8 on the second connector 6 side to the range beyond the center, the cord member 8 is centered from one end in the longitudinal direction. The tool 4 is stored and held in the tool sack 15 of the waist belt 3 as shown in FIG. At this time, the central portion in the longitudinal direction of the ridge member 8 is folded in two or V-shaped and hangs downward, and the central portion in the longitudinal direction of the ridge member is a large arc as in the prior art. Since it can be prevented from being bent and drooping downward, it is possible to effectively prevent the central portion of the rope member 8 from being caught by a projection or the like when the operator moves around or during work. The strip member 8 does not interfere with the work.

  In addition, in this case, the position of the lowest end portion of the cord member 8 bent in a V shape is changed to the center of the cord member 8 by changing the manner in which the tool 4 is accommodated in the tool sack 15 or the accommodating position. Even if the chain 11 is slightly deviated, the chain 11 can be bent into two or V-shaped at small intervals so that the lowermost end on the central side of the rope member 8 can be more reliably The chain 11 can be bent into a fold shape or a V-shape, and the chain 11 can be bent at a small interval over a plurality of ring bodies 39 to be bent with as small an arc as possible. It can prevent reliably that the center part of the longitudinal direction of the strip member 8 curves with a big circular arc, and will be in the state which hung down below.

  4 and 5 show a second embodiment. In FIG. 4, the rope member 8 has a retractable spiral cord 9 on one end side (first connecting body 5 side) and a linear cord 43 on the other end side (second connecting body 6 side). The spiral cord 9 and the linear cord 43 are connected by a relatively short chain 11. The helical cord 9 and the linear cord 43 in the reduced state are set to have substantially the same length.

As shown in FIG. 5, the linear cord 43 is formed by covering a core wire 44 formed by twisting a large number of thin stainless steel wires with a polyurethane covering body 45 in the same manner as the spiral cord 9. It is a code.
An inner loop portion 33 is formed at an end portion (inner end portion) of the spiral cord 9 on the linear cord 43 side, and an inner loop portion 47 is formed at an end portion (inner end portion) of the linear cord 43 on the spiral cord 9 side. Is formed.

  The inner loop portion 33 of the spiral cord 9 is connected to the ring body 39 at one end of the chain 11 in a chain shape, whereby the inner end portion of the spiral cord 9 is flexibly connected to the chain 11 and the linear cord 43 The inner loop portion 47 is connected to the ring body 39 at the other end of the chain 11 in a chain shape, whereby the inner end portion of the linear cord 43 is connected to the chain 11 so as to be bent. Thus, the spiral cord 9 and the linear cord 43 are connected to each other at the center portion of the rope member 8 by the chain 11 that connects the plurality of ring bodies 39 in a freely bendable manner.

An outer loop portion 48 is formed at an end portion (outer end portion) of the linear cord 43 on the second connecting body 6 side, and the outer loop portion 48 is connected to the connecting ring 22 of the second connecting body 6 in a chain shape. The linear cord 43 is flexibly connected to the second connecting body 6.
As shown in FIG. 5, the inner loop portion 47 and the outer loop portion 48 of the linear cord 43 are bent in the same manner as the spiral cord 9, and the end portion side of the linear cord 43 is folded in half. The cylindrical body 36 is externally fitted and crimped (crimped) to the bent end portion and the bent base portion, leaving a cylindrical bent portion, and the coated cylindrical body 37 is formed on the cylindrical body 36. Is externally fitted.

In the case of this embodiment, the covering cylinder 37 that is fitted on the cylindrical body 36 in the inner loop portion 33 and the outer loop portion 34 of the spiral cord 9 is omitted.
According to the second embodiment, when the tool 4 is stored and held in the tool sack 15 of the waist belt 3, the central portion in the longitudinal direction of the rope member 8 is folded into two or V-shaped by the chain 11. Since it can be bent and hangs downward, it can be reliably prevented that the central portion in the longitudinal direction of the ridge member 8 is bent by a large arc and hangs downward as in the prior art. It is possible to effectively prevent the central portion of the cable member 8 from being caught by a protrusion or the like when a person moves around or during work.

  FIG. 6 shows the third embodiment, and the linear cord 43 is formed by covering a core wire 44 formed by twisting a large number of thin stainless steel wires with a covering 45 made of polyurethane as in the case of the second embodiment. Is a flexible linear soft cord. Further, in the case of this embodiment, the covering cylindrical body 37 that is fitted onto the cylindrical body 36 in the inner loop portion 33 and the outer loop portion 34 of the spiral cord 9 is omitted, and the inner loop portion 47 of the linear cord 43 and The covering cylinder 37 fitted on the cylindrical body 36 in the outer loop portion 48 is also omitted. The other points are the same as those in the second embodiment.

FIG. 7 shows a fourth embodiment. The rope member 8 has a first spiral cord 9a (spiral cord 9) that can be expanded and contracted on one end side, and a second spiral cord 9b (spiral cord 9) on the other end side. The first spiral cord 9a and the second spiral cord 9b are connected by a relatively short chain 11. The first spiral cord 9a in the reduced state and the second spiral cord 9b in the reduced state are set to have substantially the same length.

An outer loop portion 34 is formed at an end portion (outer end portion) of the first spiral cord 9a on the first connecting body 5 side, and the outer loop portion 34 is connected to the connecting ring 22 of the first connecting body 5 in a chain shape. Thus, the outer end portion of the first spiral cord 9a is flexibly connected to the first connecting body 5.
An outer loop portion 34 is formed at an end portion (outer end portion) of the second spiral cord 9b on the second connecting body 6 side, and the outer loop portion 34 is connected to the connecting ring 22 of the second connecting body 6 in a chain shape. Thus, the outer end portion of the second spiral cord 9b is flexibly connected to the second connecting body 6.

An inner loop portion 33 is formed at an end portion (inner end portion) of the first spiral cord 9a on the second spiral cord 9b side, and an end portion (inner end portion) of the second spiral cord 9b on the first spiral cord 9a side. An inner loop portion 33 is formed.
The inner loop portion 33 of the first spiral cord 9a is connected to the ring body 39 at one end of the chain 11 in a chain shape, whereby the inner end portion of the first spiral cord 9a is flexibly connected to the chain 11, The inner loop portion 33 of the second helical cord 9b is connected to the ring body 39 at the other end of the chain 11 in a chain shape, whereby the inner end portion of the second helical cord 9b is flexibly connected to the chain 11. . Thus, the first spiral cord 9a and the second spiral cord 9b are connected to each other at the center portion of the rope member 8 by the chain 11 that connects the plurality of ring bodies 39 in a freely bendable manner.

  According to the fourth embodiment, when the tool 4 is stored and held in the tool sack 15 of the waist belt 3, the central portion in the longitudinal direction of the rope member 8 is folded into two or V-shaped by the chain 11. Since it can be bent and hangs downward, it can be reliably prevented that the central portion in the longitudinal direction of the ridge member 8 is bent by a large arc and hangs downward as in the prior art. It is possible to effectively prevent the central portion of the cable member 8 from being caught by a protrusion or the like when a person moves around or during work.

  FIG. 8 shows a fifth embodiment, in which the rope member 8 has a retractable spiral cord 9 on one end side and a linear cord 43 on the other end side, and the spiral cord 9 and the linear cord in a contracted state. 43 is set to have substantially the same length, an inner loop portion 33 is formed at the end (inner end) of the spiral cord 9 on the linear cord 43 side, and the end of the linear cord 43 on the spiral cord 9 side An inner loop portion 47 is formed in the portion (inner end portion), and the inner loop portion 33 of the spiral cord 9 and the inner loop portion 47 of the linear cord 43 are connected in a chain shape and spiral at the central portion of the cord member 8. The cord 9 and the linear cord 43 are connected in a folded manner.

  In the case of this embodiment, the inner loop portion 33 and the outer loop portion 34 of the spiral cord 9 are folded in half at the end portion side of the spiral cord 9, leaving the ring-shaped bent portion thereof. And the bent base are welded using the covering 30. Also, the inner loop portion 47 and the outer loop portion 48 of the linear cord 43 are folded in two at the end portion side of the linear cord 43, leaving the ring-shaped bent portion and the folded end portion. The curved base portion is welded using the covering body 45. The other points are the same as those in the second embodiment.

  FIG. 9 shows a sixth embodiment. The rope member 8 has a retractable spiral cord 9 on one end side and a linear cord 43 on the other end side, and the spiral cord 9 and the linear cord in a contracted state. 43 is set to have substantially the same length, an inner loop portion 33 is formed at the end (inner end) of the spiral cord 9 on the linear cord 43 side, and the end of the linear cord 43 on the spiral cord 9 side The inner loop portion 47 is formed at the portion (inner end portion), and the inner loop portion 33 of the spiral cord 9 and the inner loop portion 47 of the linear cord 43 are connected in a chain shape via the connecting ring 51, At the center of the member 8, the spiral cord 9 and the linear cord 43 are connected so as to be bent in two. The other points are the same as those of the fifth embodiment.

In the first embodiment, the outer end portion of the spiral cord 9 is connected to the first connecting body 5 and the outer end portion of the chain 11 is connected to the second connecting body 6. The outer end portion of the cord 9 may be connected to the second connecting body 6, and the outer end portion of the chain 11 may be connected to the first connecting body 5.
In the second embodiment, the third embodiment, the fifth embodiment, and the sixth embodiment, the outer end portion of the spiral cord 9 is connected to the first connecting body 5 and the outer end portion of the linear cord 43 is connected. Although connected to the second connecting body 6, the outer end of the spiral cord 9 is connected to the second connecting body 6 and the outer end of the linear cord 43 is connected to the second connecting body 6 instead. May be.

Moreover, in the said embodiment, although the 2nd connection body 6 is connected with the tool 4 via the connection ring 25, it replaces with this and hooks the hook 17 of the 2nd connection body 6 to the attachment hole of the tool 4, etc. Thus, the second connecting body 6 may be directly connected to the tool 4 in a detachable manner.
Moreover, in the said embodiment, although the 1st connection body 5 and the 2nd connection body 6 are comprised with the metal fittings called what is called a NASKA, instead of this, the 1st connection body 5 or the 2nd connection body 6 is used. You may make it comprise with the hook member made from synthetic resin of a simpler structure, etc.

DESCRIPTION OF SYMBOLS 1 Fall prevention tool 4 Tool 5 1st connection body 6 2nd connection body 8 Line member 9 Spiral cord 9a 1st spiral cord 9b 2nd spiral cord 11 Chain 33 Inner loop part 39 Ring body 43 Linear cord 47 Inner loop part

Claims (6)

A first connector (5) connected to the worker side, a second connector (6) connected to the tool (4), a first connector (5), and a second connector (6). In the tool fall prevention tool provided with the connecting rope member (8),
The strip member (8) has a retractable spiral cord (9) in a part in the longitudinal direction, and at least a central portion of the strip member (8) is bent in a double-folded manner. Tool fall prevention tool.   In addition to the spiral cord (9), the rope member (8) has a chain (11) that flexibly connects a plurality of ring bodies (39), and the chain (11) has a spiral cord ( 2. The tool according to claim 1, wherein the tool member is disposed so as to extend from one end portion in the longitudinal direction of the rope member (8) to the center portion when 9) is in a contracted state. Fall prevention tool.   The strip member (8) has a retractable spiral cord (9) on one end side and a linear cord (43) on the other end side, and a reduced spiral cord (9) and a linear cord ( 43) is set to have substantially the same length, and the spiral cord (9) and the linear cord (43) connect the plurality of ring bodies (39) so as to be freely bent at the central portion of the rope member (8). The tool fall prevention tool according to claim 1, wherein the tool fall prevention tool is connected by a chain (11).   An inner loop portion (33) is formed at the end of the spiral cord (9) on the side of the linear cord (43), and an inner loop portion (at the end of the linear cord (43) on the side of the spiral cord (9) ( 47) is formed, and the inner loop portion (33) of the spiral cord (9) is connected to the ring body (39) at one end of the chain (11) in a chain shape, and the inner loop portion ( The tool fall prevention tool according to claim 3, wherein 47) is connected to the ring body (39) at the other end of the chain (11) in a chain shape.   The strip member (8) has a first spiral cord (9a) that can be expanded and contracted on one end side and a second spiral cord (9b) on the other end side, and the first spiral cord (9a) in a contracted state. And the second spiral cord (9b) in a reduced state are set to have substantially the same length, and a plurality of first spiral cords (9a) and second spiral cords (9b) are formed at the center of the rope member (8). The tool fall prevention tool according to claim 1, wherein the ring body (39) is connected by a chain (11) which is connected to bend freely.   An inner loop portion (33) is formed at the end of the first spiral cord (9a) on the second spiral cord (9b) side, and the end of the second spiral cord (9b) on the first spiral cord (9a) side An inner loop portion (33) is formed in the portion, and the inner loop portion (33) of the first spiral cord (9a) is connected to the ring body (39) at one end of the chain (11) in a chain shape, and the second spiral The tool fall prevention tool according to claim 5, wherein the inner loop portion (33) of the cord (9b) is connected to the ring body (39) at the other end of the chain (11) in a chain shape. .

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