JPH0659325B2 - Safety belt with rope retractor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a safety belt worn on the waist of each worker in order to prevent the worker from accidentally falling when working at a high place. .

[Conventional technology]

In general, when working in high places, first install a parent rope in the work section, and moor the rope of the safety belt worn on the waist of each worker to the parent rope so that the rope can be moved via the hook. Therefore, safety measures are taken to prevent accidental drops during work.

In this case, the rope from the trunk belt of the safety belt to the hook is necessary so that each worker can move while working while using the parent rope as a fulcrum, so that each operation can be performed sufficiently during the work. It is composed of a considerable length.

[Problems to be Solved by the Invention]

The conventional safety belt of this type has the following problems.

When leaving the work area at a high place, remove each hook from the parent rope, but when removed, the rope between the trunk belt of the safety belt and the hook is considerably long, and if it is hanging from the waist, it will interfere with walking. become. For this reason, conventionally, since the rope with a hook is hung on the neck for walking, the neck is tired and the shoulder is stiff due to the weight, and fatigue other than work is added.

The present invention has been made to solve the above problems, and an object of the present invention is to fold a rope other than at the time of working in a two-fold state along the trunk belt, and to extend in the longitudinal direction of the trunk belt. An object of the present invention is to provide a safety belt with a rope retracting device that can be relieved of fatigue other than work caused by carrying a rope by winding the rope.

[Means for Solving the Problems]

In order to achieve the above object, in a safety belt with a rope retracting device of the present invention, in a safety belt in which a rope with a hook is attached to a body belt, a retracting roller is attached to a middle part of the rope, and the retracting roller is attached. The drawstring from the winder is connected to the roller, and the winder is attached to the body belt.

In order to smoothly pull the rope along the trunk belt, it is preferable to attach a roller guide or a rope guide to the trunk belt.

[Action]

When wearing the safety belt with a rope retracting device having the above-mentioned configuration, most of the length of the rope that is folded in half due to the attachment of the retracting roller is through the pull cord of the winder in the longitudinal direction of the trunk belt. Since it is retracted, if you wear the safety belt in this state on the abdomen as it is, you can walk lightly because there is no extra hanging of the rope.

Next, when working at a high position, pull the rope outward by holding the hook attached to the tip of the rope, and the rope that was previously folded in half in the longitudinal direction of the body belt Since the rope is pulled out, by mooring the hook at the tip of the rope to the parent rope, it is possible to safely perform work in high places while preventing accidental drop.

Also, when leaving the working area at a high place, remove the hook moored to the parent rope, but when removing it, along with the hook,
At this point, the rope that is folded in two at the position of the retracting roller is pulled by the pulling force of the drawstring of the winder.
Since the trunk belt is retracted again in the longitudinal direction, it is possible to walk lightly without excessive hanging of the rope.

If a long roller guide or rope guide is attached to the outer circumference of this body belt in order to smoothly draw the rope after use in the longitudinal direction of the body belt with the drawstring of the winder, this roller part Since the rope is pulled in by providing the roller leg that is slidably contacted with the inner surface or while being slidably contacted with the inner surface of the rope guide, it is possible to reliably prevent the rope from coming off the peripheral surface of the body belt.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 3 show a first embodiment of a safety belt with a rope retracting device according to the present invention.

As shown in FIG. 1, as a basic form in this type of safety belt, first, the body belt 1 is formed by weaving a strong nylon resin thread or the like into a belt-shaped body having a predetermined width and length. A known buckle 2 is attached to the base end of the body belt 1.

When the waist belt 1 is worn on the waist, the D-ring bracket is provided at the midway position of the waist belt 1 (mainly the front position adjacent to the left side when worn), which corresponds to one side front part of this wearing. 3 is installed. The D-ring fitting 3 has a buckle-shaped D-ring holder 3a movably fitted to the body belt 1 at this position, and has a D-shape on the midway surface of the body belt 1 penetrating through the holder 3a. It is an assembly holder with the base end inserted. The D-ring fitting 3 is moored to the proximal end of a rope 4 of a predetermined length having a hook 5 used in a safety belt of this type attached to the distal end thereof. The rope retractor shown below is attached to this safety belt.

This rope retracting device comprises a rope gate 6, a retracting roller 7, and a winder 8.

First, as shown in FIG. 1, the rope gate 6 is formed, for example, by resin molding or powder molding, into a vertical rectangular parallelepiped having a width and a predetermined thickness that can be fitted to the body belt 1. When the rope gate 6 is attached to the body belt 1, a pair of upper and lower rope holes 6a parallel to the longitudinal direction of the belt 1 are horizontally provided on the vertical surface of the body.

As shown in FIG. 2, the pull-in roller 7 is formed in a half-case 7a having a U-shaped vertical cross section in which two upper and lower fan-shaped surfaces are integrally connected by both outer peripheral surfaces by bending, for example, a metal plate. In addition, a roller 7b having a concave arc-shaped peripheral surface on which the rope 4 of the safety belt can be tightly fitted is formed by inserting the support shaft 7c into the shaft center of the half case 7a and the roller 7b.
It is stored freely. A rotary joint 7d for connecting the tip of the drawstring 9 described later is connected to the intermediate band of the fan-shaped outer peripheral surface of the half case 7a in a manner orthogonal to the support shaft 7c.

Further, as shown in FIG. 3, the winder 8 has a disc-shaped main body case 8a formed by an inner hollow body having one opening parallel to the shaft center formed by bending a metal plate or the like. A lid case 8b formed symmetrically is provided so that it can be tightly fitted. A belt stopper 8c for mounting the winder 8 after composition on the body belt 1 is attached to the outer back surface of the main body case 8a. A support shaft 8d having a flange 8e at the base end and a spring hooking groove 8f at the tip is fixed to the inner center of the main body case 8a according to this aspect so as to be parallel to the shaft center.

The support shaft 8d is provided with a take-up drum 8g formed by integrally welding a donut-shaped disc surface with an annular body having a U-shaped vertical section.
It is rotatably mounted so that the hole portion of the disc axis is fitted into the outer diameter portion of the flange 8e. A winding spring 8h made of a strip-shaped plate is suspended between the spring-engaging groove 8f of the support shaft 8d and one end of the peripheral surface of the winding drum 8g in a manner of holding an elastic restoring force. A base end of a drawstring 9 having a predetermined length is connected to the winding drum 8g. The drawstring 9 is wound around the take-up drum 8g so that the drawstring 9 can be unwound and taken up.
Is pulled out to the outside from a winding port 8k that opens on a part of the outer peripheral surface of the. A lid case 8b is concentrically and closely fitted in the opening of the main body case 8a to form the winder 8 as a unit.

Rope gate 6 of the rope retractor according to the above-mentioned aspect
As shown in FIG. 1, is attached to the body belt 1 so as to be adjacent to the rear portion of the D ring holder 3a. In this case, the rope 4 which is provided with a pull-in roller 7 in the middle and is folded in two is penetrated through both rope holes 6a of the rope gate 6, respectively. The pull-in roller 7 is attached to the rope 4 that is folded in half at this position by winding the intermediate portion of the rope 4 in the safety belt around the roller 7b in the half case 7a. Further, the winder 8 is attached to the outer peripheral position of the body belt 1 on the opposite side of the D-ring fitting 3 by fitting a stopper 8c to the belt.

The drawstring 9 pulled out from the winder 8 is attached to the rear half surface of the body belt 1 so that the tip thereof is connected to the rotary joint 7d of the draw-in roller 7 located in the middle of the bi-fold rope 4. There is. As a result, the rope 4 in the safety belt when not in use has a mode in which the hook 5 remains at the front position of the rope gate 6 by the pulling force of the drawstring 9 of the winder 8 (elastic restoring force of the winding spring 8h). ,
The trunk belt 1 is retracted in the longitudinal direction. See also rope 4
When the rope 4 is pulled outward while holding the hook 5 in use, the pull-in roller 7 contacts the rope gate 6 while resisting the pulling force (elastic restoring force of the winding spring 8h) by the pull string 9. Since the roll 4 is pulled out to the position, the hook 5 at the tip of the pulled-out rope 4 is moored to the parent rope (not shown), so that the worker wearing this safety belt on the waist is working at a high position. It is designed to prevent accidental drops, and is composed of a safety belt with a rope retractor as a whole.

The winder 8 may have a stopper mechanism with a push button B in a part thereof. At this time, when this rope 4 is pulled out for the purpose of using the rope 4 in the safety belt, the action of the stopper causes the spring 4 to be wound around the rope 4 being pulled out.
Since the pulling force of h does not work, it is possible to prevent tension from being applied to the rope 4 during work. When the use of the rope 4 is completed and the rope 4 is pulled in the longitudinal direction of the body belt 1 by the elastic restoring force of the winding spring 8h, the push button is operated to release the stopper of the winder 8. It is also possible to allow the rope 4 to be smoothly pulled in the longitudinal direction along the trunk belt 1 in a folded state.

Further, the rope gate 6 can also be provided with a stopper mechanism having a push button B in the same manner.

FIG. 4 shows a second embodiment of the present invention, in which the same components as those in the first embodiment are designated by the same reference numerals. FIG. 5 is a sectional view taken along line VV of FIG. When the retracting roller 7 moves on the surface of the body belt 1, the roller guide 11 prevents the retracting roller 7 from separating from the body belt 1.
Is fixed to the body belt 1. A roller leg 7f having a diameter larger than that of the support shaft 7e is formed at one end of a support shaft 7c that supports the roller 7b having a concave arc-shaped peripheral surface, and the roller leg 7f is housed inside the roller guide 11. As a result, the pull-in roller 7 always moves while slidingly contacting the inner surface of the roller guide 11, so that the pull-in roller 7 does not separate from the body belt 1.

FIG. 6 shows a third embodiment of the safety belt with a rope retracting device according to the present invention.

The safety belt and the rope retracting device in the third embodiment are
Both are constructed similarly to the first embodiment. Therefore, description of the same components will be omitted.

In the third embodiment, a series of rope guides 10 are attached to the trunk belt 1 of the safety belt with a rope retracting device configured as in the first embodiment. The rope guide 10 is configured as follows. That is, as shown in FIG. 6, the rope guide 10 is formed of, for example, a soft resin material, and is formed so as to cover the outer peripheral portion of the trunk belt 1 including the rope gate 6 to the winder 8. There is.

In this case, one end of the rope guide 10 is provided with a rope gate cover portion 10a sufficient to cover the rope gate 6. At the other end, a winder cover portion 10b sufficient to cover the winder 8 is provided. Between these two, there is an air gap that allows the rope 4 with the retracting roller 7 to be folded in two to slide between it and the body belt 1, and is formed in the form of a cover-like bulge. Furthermore, on the back side of the rope guide 10, the rope guide 1
Belt stopper 10c for attaching 0 to the body belt 1
Are provided at intervals in a manner orthogonal to the longitudinal direction.

When the rope guide 10 formed in the above mode is attached to the trunk belt 1, one rope gate cover portion 10a
However, the rope gate 6 on this side is wrapped and the winder cover portion 10b on the other side is wrapped around the winder 8 on that side to be attached to the trunk belt 1 of the safety belt. become.

When the rope guide 10 is attached to the body belt 1 in this manner, the elastic pulling force of the drawstring 9 of the winder 8 in the longitudinal direction of the body belt 1 when the rope 4 after use is folded in two. Rope 4 and drawstring 9
The pull-in operation can be stably performed in a state in which the belt is prevented from deviating from the trunk belt 1.

〔The invention's effect〕

Since the present invention is configured as described above, it has the effects described below.

Since the rope gate is attached to the trunk belt at a position adjacent to the D-ring bracket, the rope gate prevents the rope from coming off the trunk belt when the rope is pulled in the longitudinal direction of the trunk belt. Can play a role in ensuring stable retraction.

In addition, since a pull-in roller is attached to the middle of the rope moored to the D-ring metal of the body belt in a manner of folding the rope in two, even if the rope is long, it is possible to divide the rope into two short pieces. Since the rope is retracted from the beginning, the rope can be easily handled and the retracting operation can be facilitated.

Further, the rope when not in use is automatically pulled in the longitudinal direction of the trunk belt by the elastic restoring force of the winding spring in the winder, so that fatigue of the rope when carried can be smoothly eliminated.

When a roller guide or rope guide is attached to the trunk belt, all of the pulling out and winding of the rope during and after use can be performed without observing the rope without detaching it from the trunk belt. , You can ergonomically handle the rope.

[Brief description of drawings]

1 is a perspective view showing a safety belt with a rope retracting device according to a first embodiment of the present invention, FIG. 2 (a) is a plan view showing a retracting roller of the same, and FIG. 2 (b) is FIG. (a) is a vertical sectional front view taken along the line AA, FIG. 2 (c) is a vertical sectional side view taken along the line BB of FIG. 2 (a), and FIG. 3 (a) is a winder of the same device. FIG. 3 (b) is a plan view taken along the arrow C of FIG. 3 (a), and FIG. 4 is a perspective view showing a safety belt with a rope retracting device according to a second embodiment of the present invention. FIG. 5 shows D- in FIG.
FIG. 6 is a vertical sectional side view taken along line D, and FIG. 6 is a perspective view showing a safety belt with a rope retracting device according to a third embodiment of the present invention. 1 ... Body belt, 4 ... Rope 5 ... Hook, 6 ... Rope gate 7 ... Pull-in roller, 8 ... Winder 9 ... Pull string, 10 ... Rope guide 11 ... Roller guide

Claims (3)

[Claims] 1. In a safety belt in which a rope with a hook is attached to a body belt, a pulling roller is attached to a midway portion of the rope, and a pulling string from a winder is connected to the pulling roller, and A safety belt with a rope retractor that is equipped with a winder on the trunk belt. 2. A safety belt with a rope retractor according to claim 1, wherein a roller guide is attached to the body belt, and a roller leg capable of sliding contact with the inner surface of the roller guide is formed at one end of the support shaft. 3. The safety belt with a rope retractor according to claim 1, wherein a rope guide is attached to the trunk belt.