JP2000086115A - Tail cord protective device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tail cord protective device for an elevator capable of easily and securely preventing adhesion of a spark generated in welding work of the elevator or the like onto a tail cord. SOLUTION: This tail cord protective device 1 for an elevator to protect a tail cord 10 with one end fixed to an upper part of a space where an elevator car 20 moves up and down and with the other end connected to the car 20 to supply power and transmit signals is detachably installed on the tail cord 10 to be freely movable in a length direction, and the device 1 is positioned at a lower end part of the suspended tail cord 10 regardless of an elevation position of the car 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator tail cord protection device for preventing a spark from adhering to a tail cord used for power supply and control of an elevator car.

[0002]

2. Description of the Related Art Generally, an elevator car is connected to a tail cord for supplying power to the car and transmitting control signals. One end of the tail cord is connected to a car, and the other end is connected to, for example, a control device provided in a high-level portion of a structure such as a building. The tail cord is provided with a predetermined slack so as not to be pulled by the raising and lowering of the car, and the tail cord always has a curved portion curved by about 180 ° at the lower end. It is provided in.

By the way, when repairing an elevator, etc.,
For example, a spark may be generated by welding or the like, and the spark adheres to the tail cord, causing a problem such as disconnection or the like. In particular, the curved portion at the lower end of the tail cord is highly likely to have sparks, for example, wrapping a flame-retardant tape, a metal tape, or a fire-resistant fiber,
By applying a paint containing a flame-retardant plasticizer to the surface, adhesion of sparks is prevented.

In recent years, a flat type tail cord is often used. However, since the flat type tail cord has a large surface area and sparks can easily adhere thereto, it is preferable to surely prevent the adhesion of sparks. .

[0005]

However, when a tape or the like is wound around the tail cord for protection, when the elevator car is moved, the tape moves with it. Or, it is necessary to wind the entirety, and there is a disadvantage that workability is poor. In addition, when the elevator car is located above, there is no scaffolding, so that there is a problem that the protection means cannot be easily attached. Furthermore, the above-mentioned protection means such as tapes are often disposable and have a problem of low economic efficiency.

The present invention has been made in view of the above circumstances, and provides an elevator tail cord protection device which can easily and reliably prevent sparks generated during welding work of an elevator from being attached to the tail cord. That is the task.

[0007]

According to a first aspect of the present invention for solving the above-mentioned problems, one end of the car is fixed to an upper portion of a space in which an elevator car moves up and down, and the other end is connected to the car. A tail cord protection device for an elevator that protects a tail cord that supplies power and transmits a signal to the car, wherein the tail cord is detachably attached to the tail cord so as to be movable in a longitudinal direction, and is attached to the car in a vertically moving position. Without
A tail cord protection device for an elevator, wherein the tail cord is located at a lower end of the tail cord.

According to the first aspect, it is possible to realize an elevator tail cord protection device capable of reliably and easily protecting at least a hanging lower end of the tail cord.

According to a second aspect of the present invention, in the first aspect, a protection member for covering at least an upper side of a hanging lower end of the tail cord, and a rotatable free side of the protection member on a contact surface side with the tail cord. A plurality of rollers provided in the
Holding means for holding the tail cord between the protection member and the protection member, the holding means being provided at at least both ends of the protection member.

[0010] In the second aspect, the tail protection device is movable in the longitudinal direction by the roller, and is detachable by the holding means.

According to a third aspect of the present invention, in the second aspect, the holding means is provided so as to be openable and closable with respect to the protection member of the tail cord, and holds the opposite surface of the tail cord. An elevator tail cord protection device, wherein a plurality of second rollers are rotatably provided on the holding member on a contact surface side of the tail cord of the holding member.

In the third aspect, the tail cord is
The tail cord protection device is held between the roller of the protection member and the second roller of the holding member, so that the tail cord protection device is freely movable in the longitudinal direction.

According to a fourth aspect of the present invention, in the third aspect, the roller and the second roller have, at both ends, a flange portion projecting in a radial direction of the roller. And the tail cord is held in the elevator tail cord protection device.

In the fourth aspect, the tail code is
It is securely held on the roller and the second roller, and does not contact the protection member and the holding member.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least a part of the protection member is curved with a contact surface side with the tail cord being outside. It is a feature of a tail cord protection device for an elevator.

In the fifth aspect, when attaching the tail cord protection device to the tail cord, no unnecessary force is applied to the tail cord.

According to a sixth aspect of the present invention, in any one of the third to fifth aspects, the protection member and the holding member are respectively in contact with the tail cord at longitudinal ends thereof so as to contact the tail member with the protection member. An elevator tail cord protection device comprising a pair of sealing means for sealing a gap between an end surface of the holding member and the tail cord.

In the sixth aspect, the tail cord can be protected more reliably.

According to a seventh aspect of the present invention, in the sixth aspect, the sealing means has a base end fixed to the protection member or the holding member and the other end facing the tail cord. An elevator tail cord protection device comprising a sealing member provided so as to be urged.

In the seventh aspect, the gap between the end faces of the protection member and the holding member and the tail cord can be reliably sealed regardless of the size of the tail cord.

According to an eighth aspect of the present invention, in the sixth or seventh aspect, the sealing means is provided inside a distal end portion of the protection member or the holding member to seal a gap with the tail cord. And a tail cord protection device for an elevator having a sealing member.

In the eighth aspect, the gap with the tail cord can be more reliably sealed.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects, at least a part of the upper surface of the protective member is constituted by an inclined surface inclined at least toward one end in the width direction. And a tail cord protection device for an elevator.

In the ninth aspect, sparks or the like fall on the protection member without adhering thereto, and the tail cord is more reliably protected.

A tenth aspect of the present invention is the elevator according to the ninth aspect, wherein at least a part of the upper surface of the protection member is formed in a mountain shape having a vertex substantially at the center in the width direction. In the tail cord protection device.

In the tenth aspect, sparks or the like fall on the protection member without adhering, and the tail cord is more reliably protected.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments.

FIG. 1 is a perspective view of an elevator tail cord protection device according to an embodiment of the present invention, FIG. 2 is a side view showing a main portion thereof, and FIG. 3 is a main portion of the tail cord protection device. It is a perspective view.

As shown in FIG. 1, an elevator tail cord protection device 1 of the present embodiment includes a protection member 2 for covering an upper surface side of a hanging lower end of a tail cord 10;
And a holding member 3 that is provided at both end portions of the tail cord 10 so as to be openable and closable, and that holds the tail cord 10 between itself and the protection member 2.

The protection member 2 has a concave portion 2a on one side of the contact surface with the tail cord 10 and covers one surface of the tail cord 10, and has a substantially U-shaped cross section. Also, the protective member 2
Is approximately the same radius as the radius of curvature of the lower end portion of the tail cord 10 hanging substantially in the center, for example, in this embodiment, R is 2
It is curved at 40 to 250 mm and has a tail cord 10
The tail cord 10 is prevented from being deformed unnecessarily when the tail cord 10 is attached.

On the other hand, like the protective member 2, the holding member 3 has a concave portion 3a on the contact surface side with the tail cord 10,
The concave portion 3a is connected to the protective member 2 by a hinge (not shown) so as to be openable and closable so that the concave portion 3a faces the concave portion 2a of the protective member 2.

A fixing means 7, for example, a hook in the present embodiment, is provided on the opposite side of the hinged connection between the protection member 2 and the holding member 3, and the fixing means 7 is detached. Thereby, the protection member 2 and the holding member 3 can be easily fixed and released.

As described above, the protection member 2 and the holding member 3
May be formed of a material having a predetermined heat resistance,
It is preferable to use a heat-resistant material such as a metal such as aluminum or a resin such as polyimide having an appropriate weight.

As shown in FIG. 2, recesses 2a and 3a of the protection member 2 and the holding member 3 respectively have
A plurality of rollers 6 are provided rotatably at predetermined intervals in the longitudinal direction. Also, each roller 6
At both ends in the axial direction, there are flange portions 6a protruding in the radial direction of the roller 6, and the distance between these flange portions 6a is slightly larger than the width of the tail cord 10.

Therefore, when the protection member 2 is placed in a state where each roller 6 is in contact with the tail cord 10, the tail cord 10 is arranged between the flanges 6 a of the roller 6. When the holding member 3 is closed in this state, the tail cord protection device 1 is held movably in the longitudinal direction of the tail cord 10. That is, the tail cord 10 contacts only the roller 6 inside the holding member 2, and is held between the holding member 2 and the roller 6 of the protection member 3 at both ends of the protection member 2. 1 is movable along the tail cord 10. The tail cord protection device 1 is fixed to the tail cord 10. The rollers 6 provided on the protection member 2 and the holding member 3 may be provided facing each other as shown in FIG. 1, or at least a part thereof may be provided at a staggered position.

Further, as shown in FIG. 3, a pair of sealing members 8 for sealing the gap between these end surfaces and the tail cord 10 are provided at the longitudinal ends of the protection member 2 and the holding member 3, respectively. It is fixed. These sealing members 8 are provided such that the intervals between the respective distal end portions are slightly smaller than the thickness of the tail cord 10. Further, these sealing members 8 are fixed to the outer surface of the protection member 2 or the holding member 3 facing the tail cord 10 only by the fixing portions 8a near the base end, for example, by screws or the like.

In the present embodiment, a pair of second sealing members made of, for example, refractory fibers such as ceramic fibers are provided at the ends of the protection member 2 and the holding member 3 and inside the sealing member 8, respectively. The stop members 9 are provided at such an interval that they substantially contact each other.

Therefore, when the tail cord protection device 1 is attached to the tail cord 10, the sealing members 8 are elastically deformed outwardly around the fixing portions 8a, and the respective tips are urged to the tail cord 10. Contact in state. Further, the second sealing member 9 is slightly deformed by the thickness of the tail cord 10, so that the tail cord 10 is held.

The shape of the upper surface of the protective member 2 is not particularly limited. For example, as shown in FIG.
It is preferable that A is formed so that at least the upper surface of the curved portion has a mountain shape having a vertex at a substantially central portion in the width direction.
As a result, since the spark or the like falls on the protection member 2A without adhering, the tail cord can be more reliably protected. Further, the durability of the tail cord protection device 1 can be improved.

As described above, the elevator tail cord protection device 1 having such a configuration is provided with the tail cord 1.
0 is arranged between the brim portions 6a of the roller 6 and is attached to the tail cord 10, so that the tail cord 10 is securely positioned on the roller 6, and the brim portion 6a
The contact between the tail cord 10 and the protection member 2 or the holding member 3 is prevented. Therefore, the tail cord protection device 1 is attached to the tail cord 10 while being movable in the longitudinal direction.

Therefore, for example, FIGS. 5A and 5B
As shown in the figure, when the elevator car 20 is moved up and down with the tail cord protection device 1 attached to the tail cord 10, the tail cord protection device 1 is movable in the longitudinal direction, and therefore always moves downward by its own weight. Try to move. That is, the tail cord protection device 1 moves in the direction opposite to the direction of movement of the tail cord 10 and is always located at the hanging lower end of the tail cord 10 irrespective of the position at which the car 20 moves up and down. Become.

As described above, when the elevator is welded or the like, the tail cord protection device 1 is once attached to the tail cord 10, no matter where the car 20 is moved, the tail cord 10 hangs down. The protected lower end can be always protected. Therefore, for example, when welding work of the car 20 is performed, it is possible to reliably and easily prevent the adhesion of sparks or the like falling on the tail cord 10.

Further, since the gap between the protection member 2 and the holding member 3 and the tail cord 10 is securely sealed by the sealing member 8 and the second sealing member 9, the gap such as a spark The tail cord can be protected more securely without intrusion.

[0044]

As described above, in the elevator tail cord protection device of the present invention, since the roller is provided on the contact surface side of the protection member for protecting the tail cord with the tail cord, the tail cord can be moved in the longitudinal direction. Can be mounted freely. This ensures that at least the hanging lower end of the tail cord is protected regardless of the position of the car. Further, since the tail cord is held between the protection member and the holding member, the tail cord protection device and the tail cord can be easily attached and detached only by opening and closing them. Therefore, at the time of elevator welding work or the like, it is possible to reliably and easily prevent sparks from adhering to the tail cord, and to achieve an effect of improving work efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tail cord protection device according to an embodiment of the present invention.

FIG. 2 is a side view showing a main part of the tail cord protection device of the present invention.

FIG. 3 is a perspective view showing a main part of the tail cord protection device of the present invention.

FIG. 4 is a partial perspective view showing another example of the tail cord protection device of the present invention.

FIG. 5 is a schematic diagram illustrating the operation of the tail cord protection device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tail cord protection device 2 Protective member 3 Holding member 6 Roller 7 Fixing means 8 Sealing member 9 Second sealing member 10 Tail cord

Claims (10)

[Claims] 1. An elevator for protecting a tail cord having one end fixed to an upper part of a space in which an elevator car moves up and down and having the other end connected to the car for supplying power to the car and transmitting signals. A tail cord protection device, wherein the tail cord is detachably attached to the tail cord so as to be movable in a longitudinal direction, and is located at a hanging lower end portion of the tail cord regardless of an elevation position of the car. Elevator tail cord protection device. 2. The protection member according to claim 1, wherein the protection member covers at least an upper part of a hanging lower end of the tail cord, and a plurality of rollers rotatably provided on a contact surface of the protection member with the tail cord. Holding means for holding the tail cord between the protection member and at least both ends of the protection member. 3. The holding member according to claim 2, wherein the holding means is a holding member that is provided to be openable and closable with respect to the protection member of the tail cord, and covers a surface on the opposite side of the tail cord. A tail cord protection device for an elevator, wherein a plurality of second rollers are rotatably provided on a contact surface side of the tail cord. 4. The roller according to claim 3, wherein the roller and the second roller have, at both ends, a flange portion protruding in a radial direction of the roller, and the tail cord is held between the flange portions. A tail cord protection device for an elevator, comprising: 5. The tail cord protection for an elevator according to claim 1, wherein at least a part of the protection member is curved with a contact surface side with the tail cord facing outward. apparatus. 6. The tail according to claim 3, wherein the end of the protection member and the holding member in the longitudinal direction abut on the tail cord, respectively, and the end surfaces of the protection member and the holding member and the tail. A tail cord protection device for an elevator, comprising a pair of sealing means for sealing a gap with a cord. 7. The sealing means according to claim 6, wherein a base end is fixed to the protection member or the holding member, and the other end is urged toward the tail cord. A tail cord protection device for an elevator, characterized by having a sealed member. 8. The elevator according to claim 6, wherein the sealing means includes a sealing member provided inside the distal end of the protection member or the holding member to seal a gap with the tail cord. Tail cord protection device. 9. The elevator according to claim 1, wherein at least a part of the upper surface of the protection member is formed of an inclined surface inclined at least toward one end in the width direction. Tail cord protection device. 10. The elevator tail cord protection device according to claim 9, wherein at least a part of the upper surface of the protection member is formed in a mountain shape having a substantially central portion in the width direction as an apex.