JPH0330127Y2 - - Google Patents

Description

[Detailed description of the invention] This invention can be used for descenders, workers, emergency evacuees, etc. to descend from a high place to a low place such as the ground at an arbitrary speed by being transmitted to a rope, or to stop in the middle of a rope. This invention relates to a descending tool used to carry out predetermined work.

The present invention has a simple structure and low cost, and
To provide a descending tool that makes it easier to perform work by stopping in the middle of a rope.

As illustrated in the illustrated embodiment, the descending tool of the present invention includes an upper guide hole 1, a lower guide hole 2, a friction shaft 3,
Main body 6 having an exterior case 4 and a descender suspension part 5
and a control rope 7 introduced into the main body 6 through the upper guide hole 1, wound around the friction shaft 3, and then guided out of the main body 6 through the lower guide hole 2. The present invention is characterized in that a rope hooking portion 8 is formed substantially above the lower guide hole 2.

In the illustrated embodiment, an upper member 9 having an upper guide hole 1, a lower member 10 having a lower guide hole 2, and a friction shaft 3 connecting the upper member 9 and the lower member 10 are integrally formed by die-casting from a light alloy. are doing. A ring portion 11 is integrally formed on the upper surface of the upper member 9, and a ring-shaped descender suspension portion 5 is integrally formed on the lower surface of the lower member 10. The exterior case 4 has an upper member 9 and a lower member 10 and is formed to surround the friction shaft 3.
It can be detachably attached to these. 12 is an engagement protrusion (biased in the projecting direction by a spring); 13 is an engagement hole; 14 is a case fixing screw;
15 is a guide slot. The upper guide hole 1 and the lower guide hole 2 are formed into curved surfaces so that the control rope 7 described later can be gently bent.

A portion 16 at the lower end of the exterior case 4 facing the lower guide hole 2 is formed to bulge obliquely downward and outward. A rope hook 8 for hooking the control rope 7 is provided on the outer surface of the exterior case 4. The rope hook part 8 of this embodiment has an opening/closing lid 17 and a knob part 18.

The control rope 7 is connected to the outer case 4 through the upper guide hole 1.
It is arranged so that it is led out from the outer case 4 through the lower guide hole 2 after being introduced into the friction shaft 3 and wound around the friction shaft 3 . The number of windings of the control rope 7 around the friction shaft 3 can be arbitrarily selected, and the greater the number of windings, the greater the braking force.

The descending tool having the above structure is used as shown in FIG. The upper end of the control rope 7 is fixed (not shown), and the belt 20 of the descender A is connected to the descender suspension part 5 via a hook 19 or the like. The lower end of the control rope 7 is free.

In this way, the weight of the descender A is applied to the main body 6 via the descender suspension part 5, and the friction shaft 3 is attached to the main body 6.
A braking force is applied due to the friction between the control rope 7 and the control rope 7. If the lower part of the control rope 7 hangs down below the main body 6 as shown in FIG. 1, the person A can descend at an appropriate speed due to the weight of the person A. In order to control this descending speed, the lower part of the control rope 7 is bent in the direction P in FIG. All you have to do is change the amount of movement in the direction of . In this case, since the sliding resistance between the rope 7 and the outer case 4 is determined by the amount of bending of the rope 7, there is no need to apply any particular tensile force to the rope 7. Therefore, the person descending does not need to hold the rope 7, but only needs to place his hand on the rope 7 and change the rope position in the P direction, so there is no fear that his hand will be drawn into the lower guide hole 2 together with the rope 7. and,
The descending speed is controlled in accordance with the amount of movement in the P direction, and as the amount of movement increases, the descending speed decreases.

In addition, in order for the descender to stop descending, the amount of movement in the P direction may be further increased to exceed a certain limit amount. At this time, for the above-mentioned reason, no force is required to grip or pull the control rope 7, so there is no need to apply any particular force, and deceleration and stopping can be performed safely and reliably with a simple operation with one hand. Furthermore, when the descendant continues to stop at a predetermined position, as described above, the lower part of the rope 7 is moved in the P direction, that is, the rope hook 8
By moving in the direction of , it gradually decelerates and stops at a predetermined position, and while it is stopped, the lower part of the rope 7 is folded in two on the rope hooking part 8 as shown in FIGS. 2 and 3. When latched, the frictional resistance between the friction shaft 3 and the control rope 7 becomes very large, and the main body 6 can be reliably stopped at a predetermined position on the control rope 7. These operations are simple and do not require force, so even girls and children can perform them safely and reliably.

Figure 3 shows a descender (worker) A stopping at a suitable point along the control rope 7 and performing work using both hands, but the above can be done by using the descent tool of the present invention. At the same time, safety is ensured.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, the main body 6 may be configured to have an upper guide hole 1, a lower guide hole 2, a friction shaft 3, an exterior case 4, a descender suspension part 5, and a rope hook part 8, as shown in the above embodiment. It is not limited to the embodiment. It goes without saying that the form of the rope hooking part 8 is not limited to that shown in the above embodiment. Excellent safety as there are no protrusions).

Since the present invention has the above-mentioned configuration, it is possible to provide a lowering tool with a simple structure and low cost.

In addition, although the present invention has a simple structure as described above, it can reliably stop in the middle of the rope and maintain the stopped state without using the descender's hands, making it possible to perform work that requires the use of both hands of the descendant. It is possible to provide a descending tool that makes it easier to do this.

[Brief explanation of drawings]

The drawings show embodiments of the invention, and FIGS.
The figure is a perspective view thereof, and FIG. 3 is a perspective view showing its usage state. 1... Upper guide hole, 2... Lower guide hole, 3...
Friction shaft, 4...Exterior case, 5...Descenter suspension part, 6...Main body, 7...Control rope, 8...Rope hook part.

Claims (1)

[Scope of utility model registration request] An exterior case that has an upper guide hole on the top surface and a lower guide hole on the bottom surface, a friction shaft arranged in the direction of the central axis inside the exterior case, a main body that has a descender suspension part attached to the exterior case, and an upper A control rope is introduced into the main body through a guide hole, wound around a friction shaft, and then guided out of the main body through a lower guide hole, and the lower guide hole is provided at an appropriate location on the outer periphery of the bottom surface of the outer case; A descending tool characterized in that a rope hook portion is formed on a side circumferential surface of an exterior case at a location substantially above the lower guide hole.