JP2019000676A - Rope winding device of fall prevention safety belt and safety belt having the same - Google Patents

Abstract

To provide a rope winding device which enhances visibility of presence of an operator and enhances warning power, and a fall prevention safety belt using the same.SOLUTION: A rope winding device 10 includes a pair of case bodies 11, 12 and a winding shaft 13 storing a rope 2 extractably/retractably, the winding shaft 13 pierces a pair of support plates 14 and extends vertically against them, and is supported so as to rotate around the shaft of the pair of support plates 14, and reflection parts 131, 132 are included in a part of the top surface, and the reflection parts 131, 132 repeat appearance and disappearance through window parts W1, W2 by rotating every time the rope 2 is put in and out.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rope winder for a fall-preventing safety belt and a safety belt provided with the same.

  Temporary lighting fixtures are used when working indoors or at night in construction sites or construction sites for building or assembling various buildings and structures such as buildings and condominiums. And an operator wears clothes which arranged reflective materials, such as a luminescent material and a fluorescent material, in part, and visibility is ensured. These clothes are partly sewn with a light-emitting cloth or light-reflective tape made of fluorescent dye or reflective dye to reflect the light of self-luminous or lighting fixtures to other workers. It is intended to be visually confirmed and to ensure the safety of workers.

  Various inventions have been proposed for these clothes. The invention according to Patent Document 1 proposes a garment in which a light-emitting cloth-like body is separately attached to the front side and the rear side of the upper body cover. The invention according to Patent Document 2 proposes work clothes in which a light reflecting tape is sewn on at least one of a front surface, a back surface, and a side surface.

JP-A-8-158119 JP 2000-17507 A

  However, the work clothes and the like of Patent Documents 1 and 2 are not made according to the body of each worker, but are roughly sized to fit any body shape. Also, this type of clothing is not always worn in dark places at night, but sometimes during the day. That is, the construction site workers who wear the above-mentioned work clothes for night work often work and wear in bright places such as daytime. When working or working in such a bright place, the light-emitting cloth and the light reflecting tape are of course unnecessary, and the appearance looks bad when judged from the fashionability of clothes, and it is avoided especially from the younger generation.

  In addition, a worker working at a construction site indoors or at night performs the necessary movements. Therefore, the reflective surface of the reflective material placed on the front or back of the body is usually in the irradiation direction of the luminaire. When it is facing, it can be seen by others, but it may move to the blind spot position away from the irradiation direction or the reflective material may be hidden by hand, etc., and there is no reflective surface for light, and visual recognition may not work effectively. is there. For this reason, the opportunity to visually recognize the presence of the worker is lost, which may lead to an accident.

  In view of such a problem, the present invention utilizes a winding structure of a rope winder used for a safety belt for preventing a fall rather than clothes and work clothes, thereby improving the visibility of the presence of an operator and thus calling attention. The issue is to propose a safety belt that enhances power.

  The rope winder according to the present invention is a pair of case bodies composed of an upper case and a lower case facing each other with a gap therebetween, and a rope storage space is formed between the pair of case bodies, A rope take-up comprising a pair of case bodies provided with a cover provided with a window in a hole provided at a substantially central position, and a take-up shaft provided in a rope storage space for storing and removing the rope freely. The winding shaft passes through the pair of support plates, extends perpendicularly to the pair of support plates, is rotatably supported about the pair of support plates, and A reflection part is provided on a part of the upper surface, and the reflection part rotates each time the rope is taken in and out, so that the appearance and disappearance are repeated through the window part. In addition, the reflection part can give any of a retroreflective, refractive reflective sheet, a luminous luminous sheet | seat, or those combination.

  The fall-preventing safety belt according to the present invention includes the rope winder described above.

  According to the rope winder according to the present invention, the reflecting portion rotates so as to repeat appearing and disappearing in the irradiation direction of the received light beam, so that the reflected light blinks or is mixed in color. The cognitive power given to the person increases. Further, since the structure is not complicated, the number of parts is small, and the manufacturing cost can be reduced.

It is a figure showing roughly the whole composition of safety belt 1 provided with rope winder 10 concerning the present invention. It is a disassembled perspective view which shows simply the structure of the rope winder 10 which concerns on this invention. It is a top view of the rope winder 10 which concerns on this invention. It is a figure which shows typically the blinking effect | action of the rope winder 10 which concerns on this invention. It is a figure which shows a mode that the operator is attaching and working the safety belt | band | zone 1 which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same number is attached | subjected to the same part, and the overlapping description is abbreviate | omitted. It should also be noted that the drawings may be exaggerated to understand the present invention and are not necessarily shown to scale. In addition, this invention is not limited to the Example shown below.

  Example 1 will be described in detail with reference to the drawings.

  Please refer to FIG. FIG. 1 is a diagram schematically showing an overall configuration of a safety belt 1 (hereinafter referred to as safety belt 1) including a rope winder 10 according to the present invention. As shown in FIG. 1, the safety belt 1 generally includes a hook 3 that can be opened and closed, a mounting bracket 4, a rope 2 that connects the hook 3 and the mounting bracket 4, a shock absorber 5, and a rope winder 10. Prepare.

  The rope winder 10 will be described in detail with reference to FIGS. FIG. 2 is an exploded perspective view simply showing the structure of the rope winder 10 according to the present invention. The rope winder 10 generally includes an upper case 11, a lower case 12, a winding shaft 13 accommodated in these cases, and a cover 16. The upper case 11 and the lower case 12 are a pair of cases facing each other with a space therebetween, and a rope storage space is provided between them, and the winding shaft 13 is disposed here. The winding shaft 13 passes through the pair of support plates 14, extends perpendicularly thereto, and is fixed to and supported by the fixing tool 15 so as to be rotatable about the pair of support plates 14. In addition, a spiral spring (not shown) is provided around the shaft, and a ratchet (not shown) mechanism is provided for holding the rope 2 in the length of pulling out while applying the spring force in the winding direction to the shaft. It is a thing. The pair of support plates 14 includes a connecting portion 141 that fixes the winding shaft 13 and the mounting bracket 4. The upper case 11 is provided with a hole 110 on the upper surface, the transparent cover 16 is attached so as to cover the hole 110, and a window member 17 through which two portions (black paint) pass is fixed to the inner surface side of the hole 110. Is done. These two places (black painting) are window parts W1 and W2.

  Please refer to FIG. FIG. 3 is a plan view of the rope winder 10 according to the present invention. As described above, the transparent cover 16 is attached to the upper surface of the upper case 11 so as to cover the hole 110. Moreover, the window member 17 is provided with the light-shielding part 171 as window part W1, W2, and other locations (it shows by hatching). The transparent cover 16 may be made of thin plastic or thin glass. The window member 17 may be made of a resin material such as plastic.

  Please refer to FIG. 2 again. The winding shaft 13 includes a top plate 130, and the top plate 130 rotates around the axis in conjunction with the drawing and winding of the rope 2. The top plate 130 includes reflective portions 131 and 132 in part. The reflecting portions 131 and 132 may be provided with a reflecting material such as a reflecting tape, a reflecting sheet, and a thin reflecting plate. The reflective material is a material made so as to reflect incident light as it is toward the light source. Among the reflective materials, either a retroreflective or refractive reflective sheet, a phosphorescent light emitting sheet, or a combination thereof can be used. Furthermore, it is preferable to use a microprism reflecting sheet. When the microprism reflection sheet is used, a part of the light incident through the windows W1 and W2 of the transparent cover 16 described above is retroreflected to the outside through the windows W1 and W2, while the other parts of the light are reflected. Is scattered and radiated to the outside while being irregularly reflected by the prism layer. The portions other than the reflective portions 131 and 132 of the top plate 130 may be colored black or the like.

  Please refer to FIG. FIG. 4 is a diagram schematically showing the blinking action of the rope winder 10 according to the present invention. In FIG. 4, for the sake of convenience, portions other than the light shielding portion 171 and the reflecting portion are indicated by hatching, and the reflecting portions 131 and 132 are indicated by white. As described above, the winding shaft 13 includes the top plate 130, and the top plate 130 rotates around the axis in conjunction with the drawing and winding of the rope 2. The window member 17 includes window portions W1 and W2. Then, as shown in FIG. 5, the reflecting portions 131 and 132 provided in a part of the top plate 130 rotate around the axis in conjunction with the drawing or winding of the rope 2, so that the viewer can open the window portion W <b> 1. , W2 and the reflecting parts 131 and 132 appear or disappear. That is, in the state where light is irradiated from the lighting device L to the rope winder 10, the continuous appearance and disappearance of the reflecting portions 131 and 132 are as if the viewer is blinking. Visibility and alertness can be enhanced because it is visible.

  Please refer to FIG. FIG. 5 is a diagram showing a state where an operator is working with the safety belt according to the present invention attached. As shown in FIG. 5, the worker O is wearing the safety belt 1 provided with the rope winder 10 according to the present invention. The lighting device L is disposed at a work place in a dark room or at night. When the worker O moves while the light is projected from the lighting device L, the reflecting portions 131 and 132 of the rope winder 10 rotate, so that the reflecting portion 131 is irradiated in the irradiation direction via the window portions W1 and W2. , 132 appears or disappears, regressive reflection may or may not occur. Such a phenomenon appears to the viewer as if it is blinking, so that the visibility and alertness can be enhanced.

  Note that the same effect can be obtained by using a fluorescent material as an alternative to the reflective material.

  As mentioned above, although preferred embodiment in the rope winder used for the safety belt for fall prevention concerning the present invention has been illustrated and explained, various changes are possible without departing from the technical scope of the present invention. Will be understood.

  The safety belt 1 provided with the rope winder 10 according to the present invention can be widely used at work sites requiring work at night or indoors.

1 Safety belt for crash prevention
2 ropes
3 Hook
4 Mounting bracket
5 Shock absorber
10 Rope winder
11 Upper case
110 holes
12 Lower case
13 Winding shaft
130 Top plate 131 132 Reflector
14 Support plate
15 Fixing bracket
141 connecting part
16 Transparent cover
17 Window member
W1 W2 Window
171 Shading part
L Lighting device
O Worker

Claims (3)

A pair of case bodies composed of an upper case and a lower case facing each other with a space therebetween, wherein a rope storage space is formed between the pair of case bodies, and the upper case is formed of a hole provided at a substantially central position. A pair of case bodies provided with a transparent cover on the upper surface and a window member provided with a window on the inner surface;
A winding shaft disposed in the rope storage space and storing the rope in and out freely;
A rope winder comprising:
The winding shaft passes through a pair of support plates, extends perpendicularly thereto, is supported so as to be rotatable about the axis with respect to the pair of support plates, and includes a reflection portion on a part of the upper surface thereof.
The rope winder is characterized in that the reflection portion repeats appearing and disappearing through the window portion by rotating each time the rope is taken in and out.   2. The rope winder according to claim 1, wherein the reflection portion is a retroreflective or refractive reflection sheet, a phosphorescent light emitting sheet, or a combination thereof.   A safety belt for preventing a fall, comprising the rope winder according to claim 1.

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