JPH08333075A - Safety device of conveyer - Google Patents

Abstract

PURPOSE: To provide a safety device of a man conveyer having no comb teeth broken. CONSTITUTION: A comb 7 is supported pivotably in a platform port 20 and urged in the direction of a step cleat 1 by an elastic body 9 provided in the platform port 20. A received part 7h on the tip of the comb teeth received facing downward in the step cleat 1 is shaped to have a inclined side 7i facing downward and having the lower end receding relatively to the advancing direction of the comb teeth 7a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a man conveyor such as an elevator or an escalator, and more particularly to a comb provided at an entrance / exit.

[0002]

2. Description of the Related Art FIG. 5 is a schematic view of a conventional escalator. FIG. 6 is a front view showing a comb and a comb plate at an entrance / exit of a conventional escalator. FIG. 7 is a schematic sectional view taken along the line VII-VII of FIG. Generally, an escalator includes a plurality of moving steps 1 and balustrades 2 provided on the left and right sides of the step 1.
It is roughly configured by a moving handrail 3 that moves on the balustrade 2 in synchronization with the step 1, a drive device 4 that drives the step 1 and the moving handrail 3, and a floor board 10 provided at upper and lower entrances.

A comb plate 6 having a substantially elongated plate shape is arranged so as to spread across the width of the entrance / exit at the tip edge of the substantially square floor plate 10 on the step side. The tip, which is the long side on one side of the comb plate 6, is provided so as to project above the step 1. The tip of the comb plate 6 is thinned in the width direction, and a comb screw 11 is inserted into a screw hole formed on the main surface of the comb-shaped plate 7 on the upper surface of the thin-walled part to form the comb plate 6. Overlaid and screwed. The comb 7 is divided into a plurality of small pieces in the width direction, and each small piece is screwed with a countersunk screw 11.

A plurality of grooves are provided on the upper surface of the step 1 in the moving direction of the step 1 to form a step cleat 1a. The plurality of comb teeth 7a provided at the tip of the comb 7 are
It bends downward and extends, and its tip is housed in the step cleat 1a.

In the conventional safety device for a man conveyor constructed as above, when the step 1 is driven by the drive device 4, the step cleat 1a moves with respect to the fixed comb tooth 7a. The comb teeth 7a comb the step cleat 1a. As a result, when the footwear is likely to be sandwiched between the comb 7 and the step cleat 1a, this can be prevented, or when a foreign substance falls on the step cleat 1a, it can be removed by combing.

[0006]

Since the safety device of the conventional man conveyor is fixed to the comb plate by the comb teeth,
When the comb teeth moved forward in the step cleat, the comb teeth were damaged when they collided with a foreign matter that had firmly bitten into the step cleat.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a safety device for a passenger conveyor without damaging the comb teeth.

[0008]

In the safety device for a man conveyor according to claim 1, the comb is rotatably supported at the entrance and exit, and is biased in the step cleat direction by an elastic body provided at the entrance and exit. , In the shape of the storage part that is stored downward in the step cleat at the tip of the comb tooth, its front part is a downward hypotenuse with its lower end retreated relative to the direction of advance of the comb tooth relative to the step cleat. Have.

According to another aspect of the present invention, there is provided a safety device for a man conveyer, wherein a rear portion of the shape of the comb tooth storage portion is
It has a downward hypotenuse with its lower end retracted with respect to the traveling direction in which the comb teeth retract relative to the step cleat.

In the passenger conveyor safety device according to a third aspect of the present invention, there is provided a float detection switch which is provided between the comb and the entrance / exit and detects that the comb has rotated upward.

In the passenger conveyor safety device according to a fourth aspect of the present invention, the comb is divided into a plurality of small pieces in the width direction of the entrance / exit, and each small piece is rotatably supported. Each elastic piece is attached in the step cleat direction by an elastic body. It is energized.

[0012]

In the safety device for a man conveyer according to claim 1, when the comb teeth move forward in the step cleat, the comb teeth are formed in the front portion of the accommodating portion when they come into contact with the foreign matter hardly bitten into the step cleat. It is displaced upward due to the oblique side and returns to its original position when passing a foreign substance.

According to a second aspect of the present invention, in the safety device for a man conveyor, when the comb teeth retract in the step cleat, the comb teeth come into contact with the foreign matter that has firmly bitten into the step cleat,
Displaced upward due to the hypotenuse formed at the rear of the storage part,
When passing a foreign object, it returns to its original position.

In the passenger conveyor safety device according to the third aspect of the present invention, the floating detection switch detects that the comb has rotated upward.

In the passenger conveyor safety device according to the fourth aspect of the present invention, only the small piece where the foreign matter is present is displaced upward.

[0016]

【Example】

Example 1. FIG. 1 is a front view showing a doorway comb and a comb plate showing an embodiment of a safety device for a passenger conveyor according to the present invention. FIG. 2 is a sectional view taken along the line II-II of FIG. FIG. 3 is a diagram showing a state in which the comb is displaced upward by a foreign substance. The same or corresponding parts as those of the conventional escalator safety device shown in FIGS. 5 to 7 are designated by the same reference numerals,
The description is omitted.

A generally elongated plate-shaped comb plate 6 is arranged so as to spread over the width of the entrance / exit at the tip edge on the step side of the substantially rectangular floor plate 10. The floor board 10 and the comb board 6 constitute an entrance / exit 20. The tip, which is the long side on one side of the comb plate 6, is provided so as to project above the step 1. The tip of the comb plate 6 is thinned in the width direction by the thickness of the comb 7, and the comb 7 of a substantially elongated plate is arranged on the upper surface of the thin portion so as to overlap.

A hole 7d is formed in the main surface of the comb 7. The female screw hole 6 is provided at a position facing the hole 7d of the comb plate 6.
b is provided. The screw 8 penetrates the hole 7d and is inserted into the female screw hole 6b to screw the comb 7 to the comb plate 6. The screw 8 includes a screw portion 8c at the tip, a shaft portion 8b following the screw portion 8c, and a head portion 8a provided at the rear end of the shaft portion 8b. Only the screw portion 8c of the screw 8 is inserted into the female screw hole 6b, and the shaft portion 8b is not buried in the comb plate. On the other hand, the hole 7d is provided with a deep counterbore 7e,
A seat surface 7f is formed on the bottom of the spot facing 7e. Screw 8
A spring 9, which is an elastic body, is disposed so as to pass through the shaft portion 8b, and is contracted between the screw head portion 8a and the seat surface 7f. The spring 9 urges the comb 7 toward the step cleat 1a.

The rear end side of the comb 7 forms an end portion 7b having a semicircular cross section over the entire side. The receiving portion 6a of the comb plate 6 facing the end portion 7b of the comb 7 has an arcuate cross-section with a concave shape, and the radius of the arc is substantially the same as the radius of the semicircle of the end portion 7b. Is. The end portion 7b of the comb 7 is housed in the receiving portion 6a of the comb plate 6 and is rotatable about the end portion 7b.

A plurality of comb teeth 7 provided at the tip of the comb 7.
The a extends in a downward direction, and its tip is housed in the step cleat 1a. In the shape of the storage portion 7h of the comb tooth 7a which is stored in the step cleat 1a, the front portion of the comb tooth 7a has a lower end with respect to the advancing direction in which the comb tooth 7a advances relative to the step cleat 1a. Hypotenuse 7
forming i. At both ends of the hypotenuse 7i, the hypotenuse 7i
The corners formed by the adjacent sides are smoothly rounded.

The shape of the rear portion of the storage portion 7h forms a downward slanted side 7j whose lower end recedes with respect to the moving direction of the comb teeth 7a relative to the step cleat 1a. Also at both ends of the oblique side 7j, the corners formed by the adjacent sides of the oblique side 7j are smoothly rounded.

The comb 7 is provided so as to spread over the width of the entrance / exit, and the comb 7 is divided into a plurality of small pieces in the width direction of the entrance / exit. Each small piece is screw 8
Are rotatably supported, and each spring 9 urges them in the step cleat direction.

In the safety device for a man conveyer having such a structure, when the comb teeth 7a move forward in the step cleat, when the comb teeth 7a come into contact with the foreign matter 10 that has firmly bitten into the step cleat 1a, the storage section 7h is formed. It is displaced upward by the hypotenuse 7i formed in the front part of. When it further moves forward and passes the foreign matter 10, it returns to its original position due to the restoring force of the spring 9. Therefore, the comb teeth 7a do not collide with the foreign matter 10 and are damaged.

Further, when the comb teeth 7a retreat in the step cleat, when the comb teeth 7a come into contact with the foreign matter 10 that has firmly bitten into the step cleat 1a, the oblique side 7j formed at the rear part of the storage portion 7h causes the comb teeth 7a to move upward. Is displaced to. When it further moves backward and passes the foreign matter 10, it returns to its original position due to the restoring force of the spring 9. Therefore, even when retracting, the comb teeth 7a do not collide with the foreign matter 10 and are damaged.

Therefore, the safety device of the present invention can be installed at the landing or the landing of the escalator,
Further, even if the step 1 rotates in the reverse direction, the comb teeth 7a are
It does not collide with 0 and break.

Further, it is divided into a plurality of small pieces, and only the small piece where the foreign matter exists is displaced upward. The entire comb is immovable, improving durability.

Although this embodiment is an escalator, this safety device is also installed on a moving walkway, for example.

Embodiment 2 FIG. FIG. 4 is a sectional view showing another embodiment of the safety device for a passenger conveyor according to the present invention. The conductor 13a is provided on the upper surface of the comb plate 6. Further, a conductor 13b is provided on the lower surface of the comb 7. The conductors 13a and 13b are in contact with each other in a normal state where the main surface of the comb 7 is superposed on the upper surface of the comb plate 6, and when the comb 7 is rotated upward by the foreign matter 10 or the like. Are separated from each other.

The conductors 13a and 13b are connected to a current-carrying circuit (not shown), and when the comb 7 rotates upward,
The floating detection switch 13 for detecting this is configured. The energizing circuit is connected to a lamp and a buzzer on a monitoring panel in a staff room (not shown).

In the safety device for a man conveyer having such a structure, when the comb teeth 7a move forward in the step cleat, the foreign matter 10 that firmly bites into the step cleat 1 causes the comb 7 to rotate and be displaced upward. The lamp on the monitoring panel in the staff room lights up, and the buzzer sounds to notify the staff. Therefore, the clerk can know that the comb 7 is displaced upward.

The signal from the lift detection switch 13 is input to a control circuit (not shown) of the elevator, and the comb 7
It is also possible to stop the elevator when is displaced upwards.

[0032]

In the passenger conveyor safety device according to the first aspect of the present invention, the comb is rotatably supported at the entrance and exit, and is urged in the step cleat direction by the elastic body provided at the entrance and exit.
In the shape of the storage part that is stored downward in the step cleat at the tip of the comb tooth, its front part has a downward hypotenuse whose lower end recedes with respect to the direction of advance of the comb tooth relative to the step cleat. Therefore, when the comb teeth move forward in the step cleat, if the comb teeth come into contact with the foreign matter that has firmly digged into the step cleat, the comb side is displaced upward by the hypotenuse formed in the front part of the storage section and passes through the foreign matter. Then, the comb teeth do not collide with foreign matter and are damaged.

In the safety device for a man conveyor according to claim 2, in the shape of the storage portion for the comb teeth, the rear portion is
Since there is a downward hypotenuse with its lower end retracted in the direction of advance in which the comb teeth retract relative to the step cleat,
When the comb teeth retreat in the step cleat, the comb teeth come into contact with the foreign matter that has firmly digged into the step cleat, and are displaced upward by the hypotenuse formed at the rear part of the storage part. Even when returning to the inside of the step cleat, the comb teeth do not collide with foreign matter and are damaged.

In the passenger conveyor safety device according to the third aspect of the present invention, since the lift detection switch is provided between the comb and the entrance / exit for detecting that the comb has rotated upward, the comb is lifted upward. It can detect that it has rotated.

In the safety device for a passenger conveyor according to a fourth aspect, the comb is divided into a plurality of small pieces in the width direction of the entrance / exit, and each small piece is rotatably supported, and each piece is attached by an elastic body in the step cleat direction. Since it is urged, only the small piece where the foreign matter is present is displaced upward, and the entire comb is immovable, thus improving the durability.

[Brief description of drawings]

FIG. 1 is a front view showing a comb and a comb plate at an entrance / exit showing an embodiment of a safety device for a passenger conveyor according to the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a diagram showing a state in which a comb is displaced upward by a foreign substance.

FIG. 4 is a sectional view showing another embodiment of the safety device for a passenger conveyor of the present invention.

FIG. 5 is a schematic view of a conventional escalator.

FIG. 6 is a front view showing a comb and a comb plate of a conventional passenger conveyor.

7 is a schematic cross-sectional view taken along the line VII-VII of FIG.

[Explanation of symbols]

1 step, 1a step cleat, 7 comb, 7a comb tooth, 9 elastic body, 7h storage section, 7i, 7j hypotenuse, 13
Lift detection switch.

Claims (4)

[Claims] 1. A comb for combing the step cleat, which is arranged at the step-side end of the entrance / exit of a man conveyor so as to project to the step and has comb teeth extending into the step cleat formed on the upper surface of the step. A safety device comprising: the comb, which is rotatably supported at the entrance / exit, is biased in the step cleat direction by an elastic body provided at the entrance / exit, and In the shape of the storage portion housed downward in the step cleat, the front part thereof has a downwardly inclined hypotenuse with its lower end retreating with respect to the advancing direction in which the comb teeth advance relatively to the step cleat. Safety device. 2. The shape of the storage portion for the comb teeth, wherein the rear portion has a downward hypotenuse with a lower end retracted with respect to a traveling direction in which the comb teeth are relatively retracted with respect to the step cleat. Item 1. A safety device for a passenger conveyor according to item 1. 3. The safety of a passenger conveyor according to claim 1 or 2, further comprising a floating detection switch provided between the comb and the entrance / exit for detecting that the comb has rotated upward. apparatus. 4. The comb is divided into a plurality of small pieces in the width direction of the entrance / exit, each small piece is rotatably supported, and each elastic body is biased in the step cleat direction by the elastic body. The safety device for a passenger conveyor according to any one of claims 1 to 3.