JPH08143246A - Protector for elevator control cable - Google Patents

Abstract

PURPOSE: To prevent damage of a control cable due to contact with a riding car despite of a simple-structured protector having a few number of parts. CONSTITUTION: A protector comprises a rotor 1, a rotation shaft 2 penetrating the center part of the rotor 1, and a shaft support part 3 for supporting both ends of the rotation shaft 2 and is fixed to the upper and lower faces of a riding car 5 by fixing bolts 4. A part to contact with a control cable 7 is only the rotor 1, which has the center on its straight axis, the rotor 1 has such a shape that large-diameter parts 1b, 1c are larger than the small-diameter part 1a, and the large diameter parts are provided with a curved surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control cable protector, and more particularly to an elevator control cable protector using a rotating body above and below an elevator car.

[0002]

2. Description of the Related Art A conventional elevator control cable protection device has a duct in a hoistway as described, for example, in Japanese Patent Laid-Open No. 56-127574, and an upper portion of an elevator car corresponding to this duct and By arranging the rotating bodies surrounding the three sides of the control cable separately on the lower side, damage to the control cable due to contact between the control cable and the elevator car was prevented.

[0003]

SUMMARY OF THE INVENTION In the above conventional technique,
Since three separate rotating bodies are used to enclose the control cable on three sides, the number of parts is large and the structure is complicated, and the rotating body for suppressing the lateral deflection of the control cable is supported by one point. Therefore, the surface opposite to the mounting portion does not become a rotating surface, and there is a problem that the cable is damaged when the control cable comes into contact with the surface.

An object of the present invention is, firstly, to provide an inexpensive elevator control cable protection device with a reduced number of parts, and secondly, to prevent damage to the control cable due to contact with the car. It is to provide a possible elevator control cable protection device.

[0005]

In order to achieve the above-mentioned object, in the present invention, the part which is considered to come into contact with the control cable is constituted only by the rotating body axially supported by the support shaft straight line portion. A large diameter portion is provided at both ends, and a large diameter outer peripheral portion having that diameter is formed by a curved surface.

[0006]

According to the above construction, the number of shafts supporting the rotating body is reduced, so that the number of parts can be reduced as compared with the prior art, and when the control cable tends to swing outside the width of the rotating body. Since the large diameter portions at both ends of the rotating body impede its movement, and when they contact the large diameter outer peripheral portion, since the portions are curved surfaces and are the rotating bodies, damage to the control cable can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 3, the elevator as a whole has a car 5 on which passengers get on and off, a main rope 8 for hoisting or lowering the car 5, a hoistway 6 for moving the car 5, and a wall surface thereof. Is composed of the hoistway wall surface 6s and a plurality of control cables 7 extending from the machine room at the upper part of the hoistway to the lower part of the car 5 along the hoistway 6 in order to supply power to the car 5. In this embodiment, the control cable protection device 9 is attached to the upper surface and the lower surface of the car 5 on the side facing the control cable 7. The control cable protection device of the present embodiment shown in FIG. 1 includes a rotary body 1, a rotary shaft 2 penetrating the central portion of the rotary body 1, and a shaft support portion 3 that supports both ends of the rotary shaft 2, and is mounted. It is fixed to the upper and lower surfaces of the car 5 with bolts 4. As shown in FIG. 2, the rotating body 1 projects toward the hoistway wall surface 6s side with respect to the car 5, and is positioned with a gap from the hoistway wall surface 6s. The rotating body 1 is composed of a small diameter portion 1a and large diameter portions 1b and 1c, and a curved surface is formed on the large diameter outer peripheral portion 1d.

When considering the deflection of the control cable 7, the control cable 7 which swings perpendicularly to the car and approaches the car 5 is prevented from coming into contact with the car 5 by the small-diameter portion 1a of the rotating body. Returned to the position. When the control cable 7 swings laterally or obliquely, the large diameter portion 1b or 1c of the rotating body prevents the control cable 7 from contacting the shaft support portion 3 and returns to the original position. That is, the rotating body 1 is the only object on the side of the car 5 with which the control cable 7 can come into contact due to vibration. Since the rotating body 1 that comes into contact with the control cable 7 is freely rotated, friction in the contact is slight, and since all the contact surfaces are flat surfaces or curved surfaces that rotate, it is possible to control any surface. The cable 7 is not damaged. Further, since the portion that may come into contact with the control cable is composed only of the rotating body pivotally supported by the support shaft straight portion, the number of parts is small and the cost can be reduced.

FIG. 4 shows a second embodiment. In this embodiment,
Small-diameter rotating body 10 and large-diameter rotating body 1 which are divided rotating bodies
1, 12 and a linear shaft 13 penetrating through the central portions of the rotating bodies 10 to 12, and a shaft support portion 14 that supports both ends of the linear shaft 13, the small diameter rotating body 10 and the large diameter rotating bodies 11 and 12 As shown in FIG. 5, stepped portions 10s and 11s are provided at each end. The rotating bodies 10, 11, 12, the linear shaft 13, and the shaft supporting portion 14 each function in the same manner as in the first embodiment, but in particular, in this second embodiment, the rotating body is divided to rotate. Since it is only the part that comes into contact with the control cable 7, it also has a function of minimizing the rotating part. As a result, the movement of the rotating bodies 10 to 12 can be made smoother, and damage to the control cable due to improper rotation can be further prevented. Further, the step portions 10s and 11s at the end portions of the rotating body have an effect of reducing the contact resistance of the divided rotating body.

FIG. 6 shows a third embodiment. In this embodiment,
It is composed of the divided rotating bodies 15 to 18, a linear shaft 19 penetrating the central portion of the rotating bodies 15 to 18, and a plurality of shaft supporting portions 20 supporting the linear shaft 19, and the shaft supporting portion 20 and the rotating body 1
As shown in FIG. 7, the low friction material 21
Is interposed. In this embodiment as well, as in the second embodiment, the rotating bodies 15 to 18 and the linear shaft 19 function in the same manner as in the first embodiment, respectively. Firmly support and the low friction material 21 is
It has the function of making the movement of 18 smoother. The plurality of shaft support portions 20 are provided in the rotating body 1 due to the bending of the linear shaft 19 that occurs when the linear shaft 19 has a long span.
5 to 18 are prevented from rotating poorly, and the low friction material 21 reduces the contact resistance between the rotors 15 to 18 and the shaft support portion 20.
Due to these effects, damage to the control cable can be further prevented.

[0012]

According to the present invention, the structure of the control cable protection device can be simplified and the number of parts can be reduced, so that an inexpensive elevator control cable protection device can be provided. Like Further, no matter which direction the control cable swings, the control cable comes into contact with the rotating body, so that the control cable is not damaged by the contact between the elevator cars.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of a control cable protection device of the present invention.

FIG. 2 is a side view showing the overall structure of the control cable protection device of the present invention and the positional relationship with the control cable.

FIG. 3 is a cross-sectional view showing an overall configuration in which a control cable protection device of the present invention is attached to a general elevator.

FIG. 4 is a plan view showing a second embodiment of the control cable protection device of the present invention.

FIG. 5 is a partial cross-sectional view showing a step portion of a rotating body.

FIG. 6 is a plan view showing a third embodiment of the control cable protection device of the present invention.

FIG. 7 is a partial cross-sectional view showing a low friction material interposed portion.

[Explanation of symbols]

1 ... Rotating body, 2 ... Rotating shaft, 3 ... Shaft support part, 5 ... Car, 7 ... Control cable.

Claims (5)

[Claims] 1. An elevator control cable protector having a rotating body axially supported by a support shaft straight portion facing the control cable along the hoistway wall at an upper portion and a lower portion of an elevator car. An elevator control cable protection device having a large-diameter portion on the side and a curved surface formed on the outer peripheral portion of the large diameter. 2. The elevator control cable protection device according to claim 1, wherein the rotary body is composed of a plurality of rotary bodies, and a step portion is provided at an end portion of the adjacent rotary body. 3. The both ends of the linear axis according to claim 1,
A protection device for an elevator control cable, which is fixed to the car via a shaft support portion and has a step portion formed in a portion of the rotating body facing the shaft support portion. 4. A protection device for an elevator control cable according to claim 1, wherein a low friction material is interposed between the shaft support portion and the rotating body. 5. The elevator control cable protection device according to claim 2, wherein the rotary shaft is supported by three or more shaft support portions.