JP5618631B2 - Passenger conveyor safety device - Google Patents

Description

  The present invention relates to a safety device provided at an entrance to a railing lower part of a moving handrail at an entrance of a passenger conveyor.

  In the conventional passenger conveyor safety device, when foreign objects such as passenger's hand or baggage are sandwiched between the entrance and exit of the moving handrail, the inlet boot is drawn to the balustrade side, and the switch is pushed by the metal piece attached to the inlet boot, Passenger conveyor operation is stopped. Further, the height from the floor plate to the inlet boot is secured to some extent so that the foreign matter rolled between the floor plate and the moving handrail is not easily caught between the entrance and exit of the moving handrail (for example, see Patent Document 1).

Japanese Utility Model Publication No. 55-120667

  In the conventional passenger conveyor safety device as described above, when a foreign object is caught in the entrance / exit of the moving handrail, the passenger conveyor operation is stopped, but the foreign object remains in the inlet boot, so the foreign object is pulled out of the inlet boot. However, it may not be able to be pulled out quickly, in which case the inlet boot will be destroyed and a long time is required.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a safety device for a passenger conveyor that can quickly take out foreign matter sandwiched in an inlet boot.

  A passenger conveyor safety device according to the present invention includes a cylindrical inlet boot provided at an entrance / exit of a moving handrail, an inlet switch for detecting a foreign object at the entrance / exit to stop the operation of the passenger conveyor, and accommodated in the inlet boot The pushing member and the inlet switch which are movable along the longitudinal direction of the moving handrail are operated between the normal position thus formed and the pushing position upstream of the normal position in the direction in which the moving handrail is drawn into the entrance / exit. When the passenger conveyor is stopped, there is provided drive means for moving the pushing member from the normal position to the pushing position and pushing the foreign material out of the inlet boot by the pushing member.

  According to the passenger conveyor safety device of the present invention, when the inlet switch is operated and the passenger conveyor is stopped, the pushing member is moved from the normal position to the pushing position, and the foreign material is pushed in the direction to be pushed out of the inlet boot. As a result, foreign matter caught in the inlet boot can be quickly taken out.

It is a schematic block diagram which shows the escalator by Embodiment 1 of this invention. FIG. 3 is a side view showing the foreign object detection mechanism of the safety device according to the first embodiment. FIG. 3 is a plan view showing a foreign matter extruding mechanism of the safety device according to the first embodiment. It is a side view which shows the foreign material extrusion mechanism of FIG. FIG. 5 is a side view showing a state of the foreign matter push-out mechanism of FIG. 4 when the inlet switch of FIG. 2 is activated.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a schematic configuration diagram showing an escalator according to Embodiment 1 of the present invention. In the figure, a truss 1 is installed between building beams 2 on the upper and lower floors. The truss 1 supports a plurality of steps 3 connected endlessly. A pair of balustrades 4 are erected on the truss 1 on both sides of the step 3.

  Each balustrade 4 is provided with an endless moving handrail 5 that is moved in synchronization with the steps 3. The moving handrail 5 is moved on the balustrade 4 in its outward path. In addition, the moving handrail 5 is folded back at the nual portion at one end of the balustrade 4 and drawn into the balustrade 4 and pulled out from the lower portion at the other end of the balustrade 4.

  FIG. 2 is a side view showing a foreign matter detection mechanism of the safety device (inlet safety device) according to the first embodiment, and shows an II portion in FIG. 1 in an enlarged manner. The balustrade 4 has the scard guard 6 provided in the lower part. An entrance / exit of the moving handrail 5 is provided at an end of the scard guard 6. A cylindrical inlet boot 7 is provided at the entrance / exit of the moving handrail 5 to the scard guard 6. The inlet boot 7 can be displaced in the moving direction of the moving handrail 5. The inlet boot 7 is provided with a rod-like operating piece 8 that is displaced together with the inlet boot 7.

  An inlet switch 9 operated by an operating piece 8 is provided in the scard guard 6. The actuating piece 8 is biased in a direction away from the inlet switch 9 by the return spring 10. When foreign matter is drawn into the entrance / exit of the moving handrail 5 and the inlet boot 7 is displaced in the direction of entering the guard guard 6, the inlet switch 9 is operated by the operating piece 8 against the return spring 10, and the passenger conveyor is operated. Is stopped. That is, the inlet switch 9 detects the drawing of foreign matter into the entrance / exit of the moving handrail 5 and stops the operation of the passenger conveyor.

  FIG. 3 is a plan view showing the foreign matter push-out mechanism of the safety device according to the first embodiment, FIG. 4 is a side view showing the foreign matter push-out mechanism in FIG. 3, and FIG. 5 is a view of FIG. 4 when the inlet switch 9 in FIG. It is a side view which shows the state of a foreign material extrusion mechanism, and the safety device of Embodiment 1 is comprised combining the foreign material detection mechanism as shown in FIG. 2, and the foreign material detection mechanism shown in FIGS.

  A cylindrical guide body 11 made of metal or plastic that surrounds the moving handrail 5 is fixed in the scard guard 6. The guide body 11 is surrounded by a rubber-made cylindrical pushing member 12. The pushing member 12 is slidable along the longitudinal direction of the moving handrail 5 with respect to the guide body 11. Specifically, the pushing member 12 has a normal position (FIGS. 3 and 4) housed in the inlet boot 7 and a push position upstream of the normal position in the direction in which the movable handrail 5 is drawn into the doorway (FIG. 5).

  The guide body 11 is provided between the moving handrail 5 and the pushing member 12 and guides the movement of the pushing member 12 while preventing the pushing member 12 from contacting the moving handrail 5. At one end portion of the pushing member 12, a protective portion 12a is provided that relieves an impact when contacting the foreign matter and protects the foreign matter. The protection part 12a is, for example, a soft fold part. Further, when the pushing member 12 is located at the pushing position, the protection part 12a protrudes outside the inlet boot 7.

  The other end of the pushing member 12 extends into the scard guard 6, and a cylindrical cover 13 made of metal or plastic is fixed to the outer periphery thereof. A spring connection member 14 is fixed to the inner surface of the scard guard 6. One end of a push spring 15 that biases the push member 12 toward the push position is connected to the spring connecting member 14.

  A pulley 16 is provided on the inner surface of the scard guard 6. A wire 17 is wound around the pulley 16. One end of the wire 17 is connected to the other end of the push spring 15. The other end of the wire 17 is connected to a wire connecting member 18 fixed to the side surface of the cover 13. The pushing member 12 is urged toward the pushing position by the pushing spring 15 through the wire 17.

  The cover 13 is provided with a locking portion 19. A swingable hook 20 that is locked to the locking portion 19 when the pushing member 12 is located at the normal position is provided in the scard guard 6. The hook 20 holds the pushing member 12 in the normal position against the pushing spring 15.

  In the vicinity of the hook 20, an electromagnetic magnet 21 is provided as release means. The electromagnetic magnet 21 releases the holding state of the pushing member 12 by the hook 20 in synchronization with the operation of the inlet switch 9. Specifically, when the inlet switch 9 is actuated, the electromagnetic magnet 21 is excited and attracts and swings the hook 20.

  The driving means of the first embodiment includes the pushing spring 15, the pulley 16, the wire 17, the hook 20, and the electromagnetic magnet 21, and when the inlet switch 9 is actuated to stop the passenger conveyor, the pushing member 12 is driven. Is moved from the normal position to the pushing position, and the pushing member 12 pushes the foreign matter in the pushing direction to the outside of the inlet boot 7.

  In such an escalator safety device, when the inlet switch 9 is actuated to stop the operation of the passenger conveyor, the pushing member 12 is moved to the pushing position side by the restoring force of the pushing spring 15, and the pushing member 12 removes foreign matter. Pressed. Therefore, the foreign matter sandwiched in the inlet boot 7 can be quickly taken out with a simple structure.

  Further, since the guide body 11 is provided between the moving handrail 5 and the pushing member 12, the pushing member 12 can be smoothly moved in the direction opposite to the moving handrail 5.

Note that the guide body 11 may not completely surround the moving handrail 5 as long as it can guide the movement of the pushing member 12 while preventing the pushing member 12 from contacting the moving handrail 5. The handrail 5 may be divided into a plurality of parts in the longitudinal direction or other directions.
Moreover, although the cylindrical extrusion member 12 was used in said example, it is not limited to this, For example, you may divide | segment into multiple in the circumferential direction.
Furthermore, in the above example, the driving force of the pushing member 12 is obtained by the pushing spring 15, but the invention is not limited to this, and for example, an electric or hydraulic actuator may be used.
Furthermore, in the above example, the hook 20 is swung by the attractive force of the electromagnetic magnet 21, but the releasing means is not limited to this.
Moreover, although the escalator was shown in said example, the safety device of this invention is applicable also to a moving walkway.

  5 Moving handrail, 7 Inlet boot, 9 Inlet switch, 11 Guide body, 12 Extruding member, 15 Extruding spring, 20 Hook, 21 Electromagnetic magnet (release means)

Claims (4)

A cylindrical inlet boot provided at the entrance and exit of the moving handrail,
An inlet switch for detecting foreign object pull-in to the entrance and stopping the operation of the passenger conveyor;
It is movable along the longitudinal direction of the moving handrail between the normal position housed in the inlet boot and the pushing position upstream of the normal position in the direction in which the moving handrail is pulled into the entrance / exit When the inlet switch is operated and the passenger conveyor is stopped, the pushing member is moved from the normal position to the pushing position, and the foreign matter is pushed out of the inlet boot by the pushing member. A safety device for a passenger conveyor, comprising drive means for pressing in a direction.   The drive means includes a push spring that biases the push member toward the push position, a hook that holds the push member in the normal position, and the push member by the hook in synchronization with the operation of the inlet switch. The safety device for a passenger conveyor according to claim 1, further comprising release means for releasing the holding state.   3. The passenger conveyor safety device according to claim 1, wherein the pushing member is a cylindrical body surrounding the moving handrail. 4.   The guide body is further provided between the moving handrail and the pushing member, and guides the movement of the pushing member while preventing the pushing member from contacting the moving handrail. The safety device for a passenger conveyor according to any one of claims 1 to 3.

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