JP2725968B2 - Passenger conveyor safety devices - Google Patents

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 passenger conveyor for preventing a passenger's feet or the like from being caught between a comb and a step at an entrance.

[0002]

2. Description of the Related Art FIG.
FIG. 10 is a schematic cross-sectional view showing the entrance / exit of a conventional passenger conveyor disclosed in Japanese Unexamined Patent Publication (Kokai) No. H10-209, and FIG. 10 is a partially enlarged cross-sectional view of FIG. In the figure, 1 is a step, 2 is a step chain connecting a number of steps 1, 3 is a driving sprocket provided under the floor of the entrance / exit and drives the step 1, 4 is a driving force of a driving machine (not shown) A drive chain for transmitting to the sprocket 3.

[0005] 5 is a balustrade standing on both sides of step 1,
6 is a moving handrail (rubber handrail) that moves in synchronization with step 1, 7 is a skirt guard provided at the lower end of the balustrade 5, 8 is a plurality of floor boards provided side by side on the floor of the doorway, The decorative plate 9 is joined to the upper surface. 10
Is a comb plate arranged side by side on a floor plate 8, and a similar decorative plate 9 is joined to the upper surface. Numeral 11 denotes combs (combs) which are arranged in the width direction of the step 1 and screwed to the comb plate 10, and each of the combs 11 has a comb tooth portion 11a which meshes with the cleat of the step 1.

[0004] In the conventional passenger conveyor as described above, a comb 11 made of resin is used. When a leg or the like of the passenger collides with the comb 11 and the tip of the comb 11 is broken as shown in FIG. In addition, by detecting this and stopping the operation,
This prevents passengers' feet or the like from being caught between the comb 11 and the step 1.

[0005]

In the conventional passenger conveyor constructed as described above, since the material of the comb 11 is made of resin, the feet of the passenger are sandwiched between the comb 11 and the step 1. However, recently, in a passenger conveyor installed at, for example, an airport terminal or a supermarket, it is necessary to carry a luggage cart together with the passengers. For example, a comb 11 made of a high-strength material such as aluminum is used. In such a case,
The comb 11 does not break even if a passenger's foot or the like collides.
There is a problem that there is a risk of being caught between Step 1 and Step 1.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can more reliably prevent a passenger's foot or the like from being caught between a comb and a step. Accordingly, it is an object of the present invention to obtain a passenger conveyor safety device capable of improving safety.

[0007]

According to a first aspect of the present invention, there is provided a passenger conveyor safety device which enables a comb plate to move to an adjacent floor plate side, and a pressure detector is provided between the comb plate and the floor plate.
The operation of the passenger conveyor is stopped according to the output from the pressure detector.

According to a second aspect of the present invention, there is provided a passenger conveyor safety device, wherein a comb plate is provided with a roller and a guide rail is provided on an outer frame so that the comb plate can be moved to an adjacent floor plate side. And a pressure detector between the floorboard and
The operation of the passenger conveyor is stopped according to the output from the pressure detector.

According to a third aspect of the present invention, there is provided a passenger conveyor safety device, wherein a comb plate is provided with a roller and a guide rail is provided on an outer frame so that the comb plate can be moved to an adjacent floor plate side. And a pressure detector between the floorboard and
Further, the comb plate is urged toward the pressure detector by the urging means, and the operation of the passenger conveyor is stopped according to the output from the pressure detector.

[0010]

According to the present invention, by detecting the pressure applied to the comb plate, it is possible to prevent a passenger's foot or the like from being caught between the comb and the step.

[0011]

【Example】

Embodiment 1 FIG. FIG. 1 is a sectional view showing a passenger conveyor safety device according to an embodiment of the present invention. In FIG. 1, the same or corresponding parts as those in FIG. In the figure, reference numeral 21 denotes a comb plate 1 on which a comb 11 is attached.
The comb plate 10 is a pressure detector fixed between the floor plate 8 and the floor plate 8 adjacent thereto, and the comb plate 10 can be moved to some extent in the step traveling direction, that is, the floor plate 8 side. Further, in the safety device of this embodiment, when the output from the pressure detector 21 exceeds a set value, the operation of the passenger conveyor is stopped.

In the safety device described above, when the passenger's foot or the like on the step 1 collides with the comb 11, the comb plate 10 slightly moves, and pressure is applied to the pressure detector 21. When the pressure becomes equal to or higher than the set value, the operation of the passenger conveyor stops. Therefore, by setting the set value to an appropriate pressure, it is possible to more reliably prevent an accident in which a passenger's foot or the like is pinched regardless of the material of the comb 11.

Embodiment 2 FIG. Next, FIG. 2 is a plan view showing a safety device for a passenger conveyor according to one embodiment of the invention of claim 2,
3 is a sectional view taken along the line III-III in FIG. 2, and FIG.
FIG. 4 is a sectional view taken along the line IV-IV in FIG.

In the first embodiment, since the comb plate 10 has strength and rigidity enough to withstand a passenger load,
Normally, the weight is large, and even if the passenger's foot or the like collides with the comb 11, it does not move unless the impact is considerably large. However, even in the case of a slight collision, there is a danger that a foot or the like may be caught between the comb 11 and the step 1.
The comb plate 10 is configured to move with a smaller load.

In the figure, reference numeral 22 denotes an outer frame of the passenger conveyor provided on both sides of the step 1, 23 denotes a guide rail provided on the outer frame 22 for guiding the movement of the comb plate 10, and 24 denotes an outer frame 2.
2 and a comb plate 1 in a direction opposite to the step traveling direction.
The stopper 25 is provided on each side of the comb plate 10 and is a rotatable roller that rolls on the guide rail 23. The stopper 26 is provided on both sides of the comb plate 10.
4 is a protruding piece that comes into contact with 4. Other parts are the same as in the first embodiment.

As described above, by providing the rollers 25 on the comb plate 10, even the heavy comb plate 10 can be easily moved, and the pressure applied to the comb plate 10 can be detected more sensitively by the pressure detector 21. Can improve safety.

Embodiment 3 FIG. Next, FIG. 5 is a sectional view showing a safety device for a passenger conveyor according to another embodiment of the present invention. The comb plate 10 according to the second embodiment moves in the step advancing direction even with a light load, and conversely, vibration is likely to occur during normal operation. When such vibration occurs, that is, the comb plate 10 moves to the step 1 side,
When returning to the pressure detector 21 side again, the output overshoots due to the performance characteristics of the pressure detector 21 even though the amount of movement of the comb plate 10 is equal to or less than the set value of the pressure detector 21, and temporarily. There is a possibility that the operation of the passenger conveyor will be stopped due to a malfunction due to the setting value being exceeded.

On the other hand, in the third embodiment, the guide rails 23 are inclined so that the comb plate 10 always contacts the pressure detector 21. Thereby, vibration of the comb plate 10 during normal operation is prevented, and malfunction of the pressure detector 21 is prevented, so that the reliability of the device is improved. In addition,
Although the stopper 24 and the projecting piece 26 are omitted in FIG. 5, it goes without saying that these may be provided together.

Embodiment 4 FIG. Next, FIG. 6 is a plan view showing a safety device for a passenger conveyor according to an embodiment of the third aspect of the present invention,
7 is a sectional view taken along the line VII-VII of FIG. 6, and FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. In the figure, reference numeral 31 denotes a spring receiver fixed to the outer frame 22 on both sides of the comb plate 10, 32 denotes protruding pieces provided on both sides of the comb plate 10 so as to face the spring receiver 31, and 33 denotes a spring receiver and the protruding piece. The spring 33 is provided between the pressure detector 21 and the pressure detector 21 and biases the comb plate 10 toward the pressure detector 21. The length of the spring 33 is adjustable. Pressure can be adjusted.

In such a safety device, since the output fluctuation of the pressure detector 21 during normal operation is reduced, malfunction is prevented, and the reliability of the device is improved.

[0021]

As described above, the safety device for a passenger conveyor according to the first aspect of the present invention enables the comb plate to move to the adjacent floor plate side, and the pressure detector is provided between the comb plate and the floor plate. Since the operation of the passenger conveyor is stopped according to the output from the pressure detector, even if the comb does not break, the passenger's feet and the like are more reliably prevented from being caught between the comb and the step. Therefore, there is an effect that safety can be improved. The pressure detector is a floor plate and a comb plate.
It is provided so as to close the gap between
Even if you do not have a gap to move
Since it can detect that the body has collided,
To prevent passengers from tripping into the gap between the floorboards
it can.

According to a second aspect of the present invention, there is provided a passenger conveyor safety device, wherein a comb plate is provided with a roller and a guide rail is provided on an outer frame so that the comb plate can be moved to an adjacent floor plate side. A pressure detector is provided between the plate and the floor plate, and the operation of the passenger conveyor is stopped in accordance with the output from the pressure detector. The comb plate can be moved by force, thereby improving the detection accuracy and improving the reliability.

According to a third aspect of the present invention, a safety device for a passenger conveyor comprises a comb plate provided with a roller and a guide rail provided on an outer frame so that the comb plate can be moved to an adjacent floor plate side. Since the pressure detector is provided between the floor plate and the comb plate, the urging means urges the comb plate toward the pressure detector, and stops the operation of the passenger conveyor according to the output from the pressure detector. In addition to the same effect as in the second aspect of the invention, the comb plate can be kept in contact with the pressure detector to prevent the comb plate from vibrating during the normal operation, thereby detecting the pressure during the normal operation. Therefore, it is possible to suppress the output fluctuation of the device and prevent the malfunction, and as a result, it is possible to further improve the reliability.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a safety device for a passenger conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view showing a safety device for a passenger conveyor according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a sectional view showing a safety device for a passenger conveyor according to another embodiment of the present invention.

FIG. 6 is a plan view showing a safety device for a passenger conveyor according to an embodiment of the present invention.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a schematic sectional view showing an example of a conventional passenger conveyor entrance.

FIG. 10 is a partially enlarged sectional view of FIG. 9;

11 is a cross-sectional view showing a state in which the comb of FIG. 10 is broken.

[Explanation of symbols]

 Reference Signs List 8 floor plate 10 comb plate 11 comb 21 pressure detector 22 outer frame 23 guide rail 25 roller 33 spring (biasing means)

Claims (3)

(57) [Claims] 1. A comb plate provided between a floor plate of an entrance and an entrance and a step, which is engaged with the step in a non-contact state, and is configured to be movable in a direction of the floor plate; A pressure detector that is provided so as to close a gap between the comb plate and the pressure plate that is operated by a pressing force of the comb plate in the direction of the floor plate, and operates a passenger conveyor according to an output from the pressure detector. A safety device for a passenger conveyor, which is stopped. 2. A guide rail provided on an outer frame of a passenger conveyor.
And a roller provided on the comb plate and rolling on the guide rail
The comb plate is supported by the roller and the guide
Moving on the rail in the direction of the floorboard;
2. The safety device for a passenger conveyor according to claim 1 . 3. An urging means for urging the comb plate toward the floor plate.
The range within which the urging means does not operate the pressure detector
Claims characterized in that said pressure detector is pressed by a force
Item 3. The safety device for a passenger conveyor according to Item 2 .