JPH04333488A - Passenger conveyor, safety device thereof, and subsidiary tool thereof - Google Patents

Abstract

PURPOSE:To quickly release a finger, a foreign substance, and the like invaded into the gap, or previously stop the operation, by supporting a movable body provided on an inlet part to the interior of a railing which a circulating moving hand rail invades, so as to enable to displace in the reverse direction of advance of the moving hand rail. CONSTITUTION:When a finger is inserted to the gap G1 of a moving hand rail 4, a movable body 21 is displaced in the advancing direction of the hand rail centering around the journaling part 14S of a movable support 14. As a result of this, the movable body 21 displaces the movable support 14 in the same direction while compressing a first coil spring 20 between a switch supporting part 13A and a switch operating part 16, and pushes the movable element 19 of a detecting switch 18 with the switch operating part 16 to stop the operation. The movable body 21 is returned to a regular position by withdrawing the pinched finger, second springs 26 pressing against movable body supporting parts 15A, 15B are compressed and the outer end part of the movable body 21 is inclined downward due to reverse displacement against the advancing direction of the moving hand rail 4, and the gap G1 is spread to G4 to facilitate withdrawal of the finger.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger conveyor such as an escalator or an electric road, and more particularly to a passenger conveyor equipped with a safety device at the entrance of a moving handrail, a safety device for the passenger conveyor, and an auxiliary tool for the passenger conveyor.

0002

2. Description of the Related Art In general, a passenger conveyor is constructed such that the outbound side of a circulating handrail is guided along the periphery of a parapet, and the return side is guided inside the lower part of the parapet. A safety device, such as that disclosed in Japanese Patent Laid-Open No. 51-42278, is installed at the entrance of the moving handrail at the bottom of the parapet, so that when a child's fingers or the like enters through the gap between the moving handrail and the entrance, The operation of the passenger conveyor was stopped and the intruder was released.

0003

[Problems to be Solved by the Invention] In the above-mentioned prior art, a part of the safety device is supported via a spring, and the spring is deformed so that the part of the safety device sinks. However, once a child's fingers or the like enters the gap between the moving handrail and the safety device, there is a problem in that the spring easily deforms and the gap further widens, making it easier for the child to get in. Currently, this method has not been applied to actual equipment. It is.

One of the objects of the present invention is that when a passenger's finger or foreign object enters the gap between the entrance of the safety device and the moving handrail, the operation can be stopped immediately and the passenger's finger or foreign object can be quickly released. Our goal is to provide conveyors.

Another object of the present invention is to provide a passenger conveyor capable of stopping the operation of the passenger conveyor before fingers or foreign objects enter the gap between the entrance of the safety device and the moving handrail. There is a particular thing.

[0006] Still another object of the present invention is to provide a passenger conveyor that allows passengers to sense danger before fingers or foreign objects enter the gap between the entrance of the safety device and the moving handrail. There is a particular thing.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a movable body provided at the entrance of a circulating handrail, and a movable body that is displaced in the direction of movement of the movable handrail. In the passenger conveyor provided with a means for stopping the passenger conveyor, the movable body is supported so as to be displaceable in a direction opposite to the traveling direction of the moving handrail. Further, the above object can be achieved by providing an auxiliary tool that breaks when an external force is applied to the entrance portion of the movable handrail, and by detecting the breakage.

[0008]

[Operation] Since the present invention is constructed as described above, if a finger or the like is caught in the gap between the movable body of the safety device and the moving handrail and is pressed, the movable body can be grabbed and moved forward (in the opposite direction of movement of the movable handrail). ), the movable body will be displaced in the direction of releasing the pressure, making it easy to pull out the hand. Furthermore, when the auxiliary device provided at the entrance of the movable handrail receives external force and is destroyed by the finger trying to enter the gap, the child senses danger and withdraws the finger, thereby preventing further intrusion. In addition, the operation of the passenger conveyor can be stopped by detecting the external force.

[0009]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. Passenger conveyor e.g. escalator,
As shown in FIGS. 3 and 4, the treadle 1 is connected in an endless manner and rotates, the entrances and exits 2 are provided at both ends of the treadle 1 in the direction of travel, and the entrances 2 are provided along both sides of the treadle 1. The handrail 3 is provided with a handrail 3 that is erected upright, a movable handrail 4 that moves around the periphery of the handrail 3 in synchronization with the tread 1, and a frame (not shown) that is installed to support these. .

The balustrade 3 includes a balustrade panel 5 that is supported by the frame and stands upright, a handrail frame 6 that is attached to the periphery of the balustrade panel 5 and guides the movable handrail 4, and the balustrade panel 5. An inner deck cover 7, an outer deck cover 8, and a skirt guard 9 that cover the support part for the frame body.
It is equipped with

Furthermore, a safety device 10 is installed at the entrance of the movable handrail 4 of the skirt guard 9. As shown in FIGS. 1, 2, and 5 to 6, this safety device 10 can be broadly divided into fixed supports installed inside the inner deck cover 7, the outer deck cover 8, and the skirt guard 9. body 13, a movable support 14 whose lower end is rotatably supported on the fixed support 13, a detection switch 18 installed between the fixed support 13 and the movable support 14, and this detection switch. 18 and a first coil spring 20 installed between the fixed support 13 and the movable support 14, and a movable body 21 supported by the movable support 14. The fixed support body 13 is fixed to the support member 11 supported by the frame body by a fastening member 12 such as a bolt.

The fixed support body 13 is formed by punching a plate material such as a steel plate into a convex shape, and the convex tip portion serves as a switch support portion 13A. Moreover, the movable support body 14 has movable body support parts 15A and 15B that support the movable body 21 on both sides of the upper part, and the upper center part is bent to the side opposite to the moving direction of the movable handrail 4 to further extend the tip. A switch operating section 16 is formed which operates the detection switch 18 when activated. This movable support body 14 is also formed of a plate material such as a steel plate, and a notch 17A is provided at the center of the lower part to define the support member 1 of the fixed support body 13.
1, and a through hole 17B is provided in the horizontal portion leading to the switch actuating portion 16 to pass through the switch support portion 13A of the fixed support body 13.

The first coil spring 20 is located between the switch supporting portion 13A and the switch actuating portion 16 formed in this manner, and the first coil spring 20 is connected to the detection switch through a small gap from the switch actuating portion 16. Eighteen movers 19 are facing each other.

On the other hand, the movable body 21 is connected to the fixed support body 1.
3 and the movable handrail 4 which is softer than the movable support 14.
It is formed of a synthetic resin material of the same type as , has a through groove 22 (FIG. 2) that penetrates the moving handrail 4 and the parapet panel 3, and has a supported part 23 (FIGS. 6 and 7) to the supporting parts 15A and 15B. has. The through groove 22 is formed to have gaps G1, G2, G3 (FIG. 2) between the movable handrail 4 and the handrail panel 3 as small as possible to prevent fingers and foreign objects from entering. Further, a storage hole 24 is formed in the supported portion 23 at a right angle to the movable support 14 to accommodate a guide pin 25 and a second coil spring 26, which will be described later. A small hole 24H passing through the guide pin 25 is provided at the bottom of the storage hole 24 on the side of the movable support 14, and the guide pin 25 has a head 25H at one end and a threaded portion 25S at the other end.
The threaded portion 25S is passed through the small hole 24H and the movable body support portions 15A, 15B and is prevented from coming off with a nut 25N. The second coil spring 26 is disposed between the head 25H of the guide pin 25 and the bottom of the storage hole 24, and as a result, the movable body 21 is pressed against the movable body support parts 15A and 15B. It will be supported in an upright position. However, as shown in FIG.
5 and the second coil spring 26 are placed inside the movable support 14 (on the right side in the figure), there is no functional change. In addition, 27 in FIG. 1 is a stopper for adjusting the distance between the tip of the movable element 19 of the detection switch 18 and the actuating part 16, and is screwed into the movable support 14 so that the tip is attached to the fixed support 13. are in contact. Further, 21S in FIG. 1 is a partition that protects the detection switch 18 from foreign matter that has entered the movable body 21, and is formed integrally with the movable body 21.

While the escalator equipped with the safety device constructed as described above is operating, a child who is playing around the entrance/exit 2 accidentally inserts a finger into the gap G1 facing the lower surface of the moving handrail 4. When inserted, the movable body 21 is displaced in the handrail advancing direction around the pivot support 14S of the movable support 14, as shown by the two-dot chain line A in FIG. As a result, the movable body 21 is moved by the first coil spring 20.
is compressed between the switch support part 13A and the switch actuation part 16, and the movable support body 14 is displaced in the same direction, and the switch actuation part 16 pushes the movable element 19 of the detection switch 18. As a result, the detection switch 18
operates, sends a detection signal to a separate control device, and stops the escalator. At this time, the movable body 21
is displaced around the shaft support 14S, but the amount of displacement is small, so the gap G1 is approximately the same as the gap at the fixed position, and the finger will not further intrude.

With the above operation, when the operation of the escalator is stopped, if the pinched finger is withdrawn, the movable body 21 returns to the normal position, and the movable body 21 is further pressed against the movable body supports 15A and 15B. By compressing the second coil spring 26, the outer end of the movable body 21 is displaced in the opposite direction to the moving direction of the handrail 4, as shown by two-dot chain lines B and C in FIG. tilts downward (Figure 7). As shown by the two-dot chain line C in FIG. 1 and FIG. 7, when the movable body 21 is displaced, the gap G1 with respect to the movable handrail 4 widens as shown by G4, and fingers can be easily removed. If there is no room to withdraw the pinched hand or fingers, a nearby person or staff member can grab the movable body 21 and pull it in the opposite direction to the moving direction of the handrail 4, so that the movable body 21 moves away from the handrail. Since it is easily displaced in the direction, fingers can be removed in the same way.

In this way, even if a finger is pinched, it can be easily removed, and the movable handrail 4 and the movable body 21 can easily remove the finger.
Since the material is softer than the above, the damage can be kept to a minimum.

By the way, the gaps G1, G2, G3 between the through groove 22, the movable handrail 4, and the handrail panel 3, especially the gaps G1, G2, can be formed if the direction in which the movable handrail 4 enters the entrance is approximately horizontal. However, if the direction of entry is inclined, when the movable body 21 is pulled outward, the gap G2 at the top of the through groove 22 will immediately support the movable handrail 4, and In such a case, the upper gap G2 may be made larger than the lower gap G1 because the above displacement is inhibited and it becomes difficult to remove the fingers. Even if the upper gap G2 is increased, as shown in FIGS. 3 and 4, the inner deck cover 7 and the outer deck cover 8 cover the upper part, so there is almost no chance for fingers or foreign objects to enter.

Furthermore, the through groove 2 formed in the movable body 21
2, on the handrail entry side, L dimension (Fig. 1
) It has a protruding peripheral edge 21P that protrudes, and has a safety function to prevent fingers from entering.

Furthermore, as shown in FIG. 8, the movable body 21 may be provided with grip portions 28A and 28B that protrude in the direction of movement opposite to the handrail so that a third party can easily grasp the movable body 21. A concave portion may be formed to make it easier to grasp.

In the above embodiment, after the escalator has stopped, the movable body 21 is displaced in the direction opposite to the direction in which the handrail advances, and the trapped fingers are removed.
In addition, although not shown, after the movable body 21 is displaced in the handrail advancing direction with a finger or a foreign object caught in the escalator and the escalator is stopped, the movable body 21 moves in the direction of widening the gap G1 at that position. 21 may be displaced to remove the trapped finger or the like.

In addition, the movable body 21 is held in a fixed position by the first coil spring 20 and the second coil spring 26, but the movable body 21 is held by one holding body, for example, one spring material. It may also be held in place and displaced in both directions when a slight force is applied.

Furthermore, in the above embodiment, the movable body 21 is displaced to remove fingers, etc., but as shown in FIG.
As shown in FIG. 2, by providing a protruding wall 29 that protrudes along the counter-handrail movement direction around the through groove 22 of the movable body 21, the protruding wall 29 can be removed before fingers or the like are caught.
Since the movable body 21 can be displaced by touching, the escalator can be stopped.

Furthermore, FIGS. 9 to 11 show another embodiment in which danger is detected or the escalator is stopped before a finger or the like is caught.

First, in the embodiment shown in FIG. 9, an auxiliary tool is placed in front of the movable body 21 of the previous embodiment shown in FIGS.
2. The structure 30 is made of, for example, a foamed plastic material and is damaged by back and forth force, and is arranged so as to surround the movable handrail 4. The structure 30 is a handrail frame 6
The structure is such that it can be easily attached and detached so that if it is destroyed, it can be easily replaced with a new one. With the above configuration, for example, if a child's fingers reach the structure 30 while grasping the movable handrail 4, the structure 30 made of a foamed plastic material receives external force and easily breaks. At that time, if the structure 30 is displacing the movable body 21 in the handrail movement direction, the detection switch is activated and the operation of the escalator is stopped. Even if it does not stop, the structure 30
If the object is destroyed, the infant will reflexively withdraw his or her hand, and nothing serious will happen. If a finger unfortunately enters the gap between the movable handrail 4 and the structure 30, the force that tries to widen the gap due to the intrusion of the finger will be applied to the structure 3.
Acts on 0. This force displaces the structure 30 made of a foamed plastic material toward the movable body 21, displacing the movable body 21, and easily destroying it. As a result, the escalator stopped operating and
You can easily retract your fingers. Therefore, accidents in which fingers are drawn into the movable body 21 can be reduced. At this time, if the relationship between the breaking strength W of the structure 30 and the displacement force F of the movable body 21 is W<F, the structure 30 is destroyed before the movable body 21 is displaced, and then The movable body 21 can be displaced, and if W>F, the structure 30 can be displaced together with the movable body 21, or at the same time as the structure 30 is displaced.
can be destroyed. Breaking strength W of this structure 30
The relationship between F and the displacement force F of the movable body 21 can be selected arbitrarily.

Next, in the embodiment shown in FIG.
The tool itself is made of a material that is easy to break, such as a plastic foam material, and the one shown in FIG. The formed structure 32 is directly supported at the movable handrail entrance part of the movable body 21, and the structure 32 is
The relationship between the breaking strength W of No. 2 and the displacement force F of the movable body 21 is the same as that of the embodiment shown in FIG.
This is almost the same as the embodiment shown in .

In addition, in FIGS. 9 to 11, the structures 30, 3
2 and the movable body 31 may be provided to stop the operation of the escalator, and to notify the surroundings of the escalator and the manager's room of the stoppage of operation or abnormality. Furthermore, the structures 30, 32
Alternatively, the movable body 31 may be configured to be deformed by a slight force without being destroyed, and similarly, a stoppage of operation or an abnormality may be notified. Incidentally, although the above description has been made regarding an escalator, it is of course applicable to an electric road whose handrail portion has approximately the same configuration.

[0028]

[Effects of the Invention] According to the present invention, when a foreign object such as a finger enters the gap between the safety device and the moving handrail, it can be quickly released and the operation of the passenger conveyor can be stopped before the object enters. It is possible to obtain a highly safe passenger conveyor that allows passengers to sense danger before they enter the vehicle.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing a safety device used in the present invention.

FIG. 2 is a partially cutaway front view showing the safety device of FIG. 1;

FIG. 3 is a partially cutaway side view showing how the safety device in FIG. 1 is attached to the escalator.

FIG. 4 is a partially cutaway perspective view showing the safety device of FIG. 3;

FIG. 5 is a perspective view showing a support body of the safety device used in the present invention.

FIG. 6 is a longitudinal sectional view taken along line VI-VI in FIG. 2;

FIG. 7 is a vertical sectional view showing the movement of FIG. 6;

FIG. 8 is a vertical sectional side view showing another embodiment of the movable body used in the present invention.

FIG. 9 is a side view showing an embodiment of an auxiliary tool used in the present invention.

FIG. 10 is a side view showing still another embodiment of the auxiliary tool used in the present invention.

FIG. 11 is a side view showing another embodiment of the safety device used in the present invention.

[Explanation of symbols]

4... Movable handrail, 10... Safety device, 13... Movable support,
14... Fixed support body, 18... Detection switch, 20... First coil spring, 21... Movable body, 26... Second coil spring.

Claims (22)

[Claims] 1. A movable body provided at an entrance to the inside of the parapet into which a circulating handrail enters, and means for stopping a passenger conveyor when the movable body is displaced in the traveling direction of the movable handrail. A passenger conveyor comprising: the movable body supported so as to be displaceable in a direction opposite to the traveling direction of the moving handrail. 2. A movable body provided at the entrance to the inside of the parapet into which the circulating handrail enters, and means for stopping the operation when the movable body is displaced from its home position in the traveling direction of the movable handrail. The passenger conveyor is characterized in that a holding body is provided that supports the movable body so as to be displaceable from the fixed position in a direction opposite to the direction of movement of the moving handrail, and holds the movable body at the fixed position during normal operation. Passenger conveyor. 3. The movable body is supported via a support body, and the movable body is displaced along with the support body in the direction of movement of the moving handrail, and is displaced in the opposite direction of movement, leaving the support body behind. Claim 2 characterized in that it is supported as follows.
Passenger conveyor as described. 4. The passenger conveyor according to claim 2, wherein the movable body is supported via a support and is elastically supported by the support. 5. The elastic body includes a first elastic body and a second elastic body, and the movable body is displaced by deforming the first elastic body together with the support body in the moving handrail traveling direction. 5. The passenger conveyor according to claim 4, wherein the support body remains in a direction opposite to the handrail movement direction, and the second elastic body is supported so as to be deformed and displaced. 6. A movable body supported via a support at the entrance to the inside of the parapet into which the circulating handrail enters, and when the movable body is displaced from its home position in the traveling direction of the movable handrail. What is claimed is: 1. A passenger conveyor comprising means for stopping operation, wherein the movable body is displaceable in a direction opposite to the handrail advancement direction with respect to the support body, and is also movable in the vertical direction. 7. A movable body provided at an entrance to the inside of the parapet into which the circulating handrail enters, and means for stopping the passenger conveyor when the movable body is displaced in the traveling direction of the movable handrail. A passenger conveyor comprising: a passenger conveyor, characterized in that the movable body is configured to be destroyed when external force is applied thereto. 8. The passenger conveyor according to claim 7, wherein the movable body is configured to be destroyed when a force is applied to widen the gap between the movable handrail and the movable body. 9. The passenger conveyor according to claim 7, wherein the movable body is configured to break when a force along the direction of movement of the moving handrail is applied. 10. A passenger conveyor according to claim 7, wherein said movable body is made of foamed plastic material. 11. A movable body provided at an entrance to the inside of the parapet into which the circulating handrail enters, and means for stopping the passenger conveyor when the movable body is displaced in the traveling direction of the movable handrail. 1. A passenger conveyor comprising: a passenger conveyor, wherein the movable body is configured to deform when a force is applied to widen a gap between the movable handrail and the movable body. 12. A movable body provided at an entrance to the inside of the parapet into which the circulating handrail enters, and means for stopping the passenger conveyor when the movable body is displaced in the traveling direction of the movable handrail. 1. A passenger conveyor comprising: a structure that breaks when an external force is applied to the movable body; 13. A passenger conveyor, characterized in that a structure that breaks when external force is applied is provided in front of the entrance to the inside of the parapet into which the circulating handrail enters. 14. A movable body supported at the entrance to the inside of the parapet into which the circulating handrail enters, and a movable body that stops operation when the movable body is displaced from its home position in the traveling direction of the movable handrail. In a passenger conveyor comprising means,
A passenger conveyor characterized in that the movable body is configured to move away from the moving handrail after being displaced in the handrail advancing direction. 15. The passenger conveyor according to claim 14, wherein the movable body is configured to move away from the moving handrail in a direction in which a gap between the movable body and the movable handrail increases. 16. A movable body is provided via a support at the entrance to the inside of the parapet into which the circulating handrail enters, and a detector detects displacement of the movable body from a fixed position in the traveling direction of the movable handrail. In the passenger conveyor, the support body is configured to include a first support body having a movable body support portion that supports the movable body, and a first support body that extends in the handrail traveling direction. a second support body displaceably supported; a detector for detecting displacement of the movable body is disposed between the first support body and the second support body; A regulating body for regulating displacement of the first support in a direction opposite to the handrail movement direction is provided on the body, and a first elastic body is provided for returning the first support body displaced in the handrail movement direction to a home position, and A passenger conveyor characterized in that a second elastic body is provided that presses the movable body against the second support body. 17. A passenger vehicle comprising: a movable body provided at an entrance to the inside of the parapet into which a circulating handrail enters; and means for detecting when the movable body is displaced in the traveling direction of the movable handrail. A safety device for a passenger conveyor, characterized in that the movable body is supported so as to be displaced in a direction opposite to the handrail movement direction. 18. The safety device for a passenger conveyor according to claim 17, wherein the movable body has a holding portion that is grasped by an operator. 19. The safety device for a passenger conveyor according to claim 17, wherein the movable body has a protruding peripheral edge facing the moving handrail. 20. An auxiliary tool for a passenger conveyor, characterized in that it is configured to be attachable to the front of the entrance of a moving handrail of a parapet of a passenger conveyor, and is configured to break when external force is applied. 21. The auxiliary tool for a passenger conveyor according to claim 20, wherein the auxiliary tool for a passenger conveyor is detachably attached to a safety device supported at the entrance of a moving handrail of the passenger conveyor. 22. The auxiliary tool for a passenger conveyor according to claim 20, wherein the auxiliary tool is opposed to the moving handrail of the passenger conveyor with a small gap therebetween.