JP5978119B2 - Elevator door equipment - Google Patents

Description

  The present invention relates to an elevator door device, and more particularly to an elevator door device having a safety shoe that detects foreign objects such as people and obstacles and reopens the door of an elevator car for safety.

  In elevator door devices, safety shoes are parallel in the horizontal direction so that it can detect that a small foreign object such as a string on a sill has been caught in the car door and reopen the door for safety. Safety devices that move and actuate the detection switch have been considered.

  For example, Patent Document 1 below discloses an elevator door device that can detect the pinching of a string-like foreign material without increasing the space between the door safety shoe and the door. In Patent Document 1, in a double-open type elevator door device provided with a pair of door safety shoes respectively provided on left and right car doors provided at an entrance of an elevator, when the car door is closed, the tip of the door safety shoe is It is configured to contact each other. The door safety shoe is supported so as to be slidable in the horizontal direction, and is connected to a weight that applies a force in the door closing direction to the door safety shoe.

JP 2006-96488 A

  In the technique of Patent Document 1 described above, a guide portion for moving the safety shoe in the horizontal direction is provided, the lever is slid, and the weight of the weight returns the safety shoe to the position before the movement. In this structure, there is a problem that the structure is complicated because the return weight is installed, and the sliding resistance of the lever is large and the safety shoe does not move smoothly.

  An object of the present invention is to provide a new door device that smoothly translates a safety shoe in a horizontal direction without installing a return weight.

In order to achieve the above object, according to the present invention, a safety shoe that protrudes and retracts at the end of the elevator car door so as to be able to advance and retreat, detects a foreign object, and retreats. Elevator door device comprising a link mechanism that guides in accordance with an advance / retreat operation in the opening / closing direction, a safety switch that detects displacement of the link mechanism, and a control device, and the door control of the door is performed by the control device by the operation of the safety switch. , A horizontal axis rotation link that rotates the safety shoe in a vertical plane that guides the forward and backward movement of the safety shoe in the door opening and closing direction, and a horizontal plane that guides the parallel movement of the safety shoe in the horizontal direction. It provided a vertical shaft rotary link, to return the safety shoe retracted by foreign object to the position before the movement by the weight of the horizontal axis rotary link It is characterized in.

The present invention includes a link mechanism that is provided outside the door and guides a safety shoe according to a forward / backward movement operation in the door opening / closing direction, a safety switch that detects the displacement of the link mechanism, and a control device. In an elevator door device that controls the link mechanism, the link mechanism guides the horizontal axis rotation link that rotates the safety shoe in the vertical plane that guides the forward and backward movement of the safety shoe in the door opening and closing direction, and the parallel movement of the safety shoe in the horizontal direction. A vertical axis rotation link that rotates in a horizontal plane that moves, and the safety shoe that has been retracted by a foreign object is returned to its previous position by the weight of the horizontal axis rotation link so that the safety shoe moves smoothly in the horizontal direction. Therefore, the safety shoe can be smoothly and reliably returned to the position before the movement with a simple structure.

1 is an overall schematic view showing an embodiment of an elevator door device according to the present invention. The detailed view of the door lower part in the door protrusion state of a safety shoe. The top view which shows the upper link mechanism in FIG. The bottom view which shows the lower link mechanism in FIG. The detailed view of the lower part of the door in the door retracted state of the safety shoe. The top view which shows the upper link mechanism in FIG. The bottom view which shows the lower link mechanism in FIG.

Hereinafter, an embodiment of an elevator apparatus according to the present invention will be described with reference to the drawings.
[Basic configuration]
FIG. 1 is an overall schematic view of a car door showing an embodiment of an elevator apparatus according to the present invention. FIG. 2 is a detailed view of the lower portion of the door when the safety shoe is protruding. FIG. 3 is a plan view showing the upper link mechanism in FIG. 4 is a bottom view showing the lower link mechanism in FIG. 1 to 4 all show a door open state in which the safety shoe protrudes from the car door.

In FIG. 1, a door 1 provided in an elevator car C is fixed to a hanger 2, a hanger roller 3 is attached to the hanger 2, and the hanger roller 3 is fixed on a rail frame 4 on a door rail 5. The door 1 is configured to open and close by rolling. A guide shoe 6 is attached to the lower end of the door 1, and the guide shoe 6 slides in a groove of a sill 7 provided on the floor of the car C. Reference numeral 20 denotes a control device that controls opening and closing of the door 1. The hanger 2 is driven to open and close by a driving device (not shown) and the control device 20.
[Horizontal rotation link]
In FIG. 1, a lower horizontal axis rotary link 8 provided at the lower part of the door 1 is fixed to the door 1 by a rotary shaft 8a, and is pivotally supported so as to be rotatable in a vertical plane around the rotary shaft 8a. The lower connecting link 10 is connected to the rotating shaft 8 b at the upper end of the lower horizontal axis rotating link 8, and the rotating shaft 10 a of the lower connecting link 10 is connected to the safety shoe 16.

The upper horizontal axis rotation link 9 provided on the upper portion of the door 1 is fixed to the door 1 by a rotation shaft 9a and is pivotally supported around the rotation shaft 9a. The upper connecting link 11 is connected to the rotating shaft 9 b on the upper horizontal axis rotating link 9, and the rotating shaft 11 a of the upper connecting link 11 is connected to the safety shoe 16.
[Vertical axis rotation link]
Further, in FIG. 1, a lower vertical axis rotating link 12 provided at the lower portion of the door 1 is fixed to the door 1 by a rotating shaft 12a and is pivotally supported so as to be rotatable in a horizontal plane around the rotating shaft 12a. The lower connecting link 14 is connected to the rotating shaft 12 b of the lower vertical shaft rotating link 12, and the rotating shaft 14 a of the lower connecting link 14 is connected to the safety shoe 16.

  The upper vertical axis rotation link 13 provided on the upper portion of the door 1 is fixed to the door 1 by a rotation shaft 13a, and is pivotally supported around the rotation shaft 13a. The upper connecting link 15 is connected to the rotating shaft 13 b above the upper vertical shaft rotating link 13, and the rotating shaft 15 a of the upper connecting link 15 is connected to the safety shoe 16.

  With the above-described configuration, the safety shoe 16 includes the lower horizontal axis rotary link 8 and the lower connection link 10, the lower vertical axis rotary link 12 and the lower connection link 14, the upper horizontal axis rotary link 9 and the upper part. The upper link mechanism including the connecting link 11, the upper vertical shaft rotating link 13, and the upper connecting link 15 enables smooth and reliable parallel movement in the horizontal direction.

  Furthermore, the safety shoe 16 can be returned to the position before the movement by the weight of the lower horizontal axis rotation link 8, the lower connection link 10, the upper horizontal axis rotation link 9, the upper connection link 11 and the safety shoe 16.

  A stopper 18 is provided below the rotary shaft 8a that supports the lower horizontal axis rotary link 8, and a stopper 19 is provided above the upper horizontal axis rotary link 9 rotary shaft 9a. The stopper 18 restricts the protruding position of the safety shoe 16 by restricting the rotation of the lower horizontal axis rotation link 8. On the other hand, the stopper 19 restricts the retreat position of the safety shoe 16 by restricting the rotation of the upper horizontal axis rotation link 9.

As shown in FIGS. 1 and 2, a detection switch 17 for detecting the backward movement of the safety shoe 16 is provided on the door 1 on the lower left side of the rotary shaft 8 a and on the left side of the lower horizontal shaft rotary link 8. The detection switch 17 is provided at a position in contact with the lower horizontal axis rotation link 8 in the normal state of the safety shoe 16, and is in an ON state. The detection switch 17 is connected to a control device 20 that performs door opening / closing control.
[Operation structure of safety shoe]
Next, the operation structure of the safety shoe and the detection switch in the embodiment of the present invention will be described. FIG. 5 is a detailed view of the lower portion of the door when the safety shoe is retracted. FIG. 6 is a plan view showing the upper link mechanism in FIG. FIG. 7 is a bottom view showing the lower link mechanism in FIG. 5 to 7 show a foreign object detection state in which the safety shoe has retracted from the end of the car door.

  In a state where the door 1 of the car is fully opened or performing a closing movement, the safety shoe 16 is pushed by the user's body, or the door is opened by an external factor such as a foreign object or an obstacle. When retracted in the direction, the lower horizontal axis rotary link 8 and the upper horizontal axis rotary link 9 rotate counterclockwise about the rotary axes 8a and 9a, respectively. By this rotation, as shown in FIG. 5, the contact between the lower horizontal axis rotation link 8 and the detection switch 17 is released, and the detection switch 17 is turned OFF. At this time, the control device 20 controls the door 1 so that it cannot be closed (stationary control) or controls the door 1 to open (reverse control) according to the output of the detection switch 17. Conventionally, this control logic can be easily configured on software operating on a microcomputer.

  As described above, according to the present embodiment, the safety shoe 16 is smoothly and surely secured in the horizontal direction by the upper vertical axis rotation link 13 and the upper connection link 15, and the lower vertical axis rotation link 12 and the lower connection link 14. It is possible to move in parallel.

  Further, the safety shoe can be returned to the position before the movement by the weight of the lower horizontal axis rotation link 8 and the lower connection link 10 and the upper horizontal axis rotation link 9 and the upper connection link 11.

  In this embodiment, the upper link mechanism and the lower link mechanism provide a safe and durable safety shoe operating structure that is remote and reliable. However, depending on the size and weight of the door, a simpler configuration can be implemented. For example, the safety shoe can be operated in the same manner by combining only one link mechanism and the other vertical axis rotation link mechanism. Alternatively, in the case of a small door, the safety shoe can be operated by either the upper link mechanism or the lower link mechanism.

DESCRIPTION OF SYMBOLS 1 Door 2 Hanger 3 Hanger roller 4 Rail frame 5 Door rail 6 Guide shoe 7 Sill 8 Lower horizontal axis rotating link 9 Upper horizontal axis rotating link 8a, 8b, 9a, 9b Horizontal axis rotating link rotating shaft 10 Lower connecting link 11 Upper connecting link 10a, 11a Horizontal axis rotation link rotation axis 12 Lower vertical axis rotation link 13 Upper vertical axis rotation link 12a, 12b, 13a, 13b Vertical axis rotation link rotation axis 14 Lower connection link 15 Upper connection link 14a, 15a Vertical axis rotation link rotation Shaft 16 Safety shoe 17 Detection switch 18, 19 Stopper 20 Control device

Claims (5)

A safety shoe that protrudes and retracts at the end of the elevator car door so as to be able to advance and retreat, and moves backward by detecting a foreign object, and the safety shoe that is provided outside the door is adapted to move forward and backward in the door opening and closing direction. In an elevator door device comprising a link mechanism that guides the vehicle, a safety switch that detects displacement of the link mechanism, and a control device, and the opening and closing control of the door by the control device by the operation of the safety switch.
The link mechanism has a horizontal shaft rotation link that rotates the safety shoe in a vertical plane that guides the forward and backward movement of the safety shoe in the door opening and closing direction, and a rotation in a horizontal plane that guides the parallel movement of the safety shoe in the horizontal direction. An elevator door device comprising: a moving vertical axis rotating link; and the safety shoe retracted by the foreign matter is returned to a position before movement by the weight of the horizontal axis rotating link.   2. The elevator door device according to claim 1, further comprising a connection link that connects the horizontal axis rotation link and the safety shoe, and a connection link that connects the vertical axis rotation link and the safety shoe. Elevator door device.   3. The elevator door device according to claim 1, wherein the link mechanism having the horizontal axis rotation link and the vertical axis rotation link is provided on each of an upper part and a lower part of the door, and the safety switch is provided on the two doors. An elevator door device provided on any one of a pair of link mechanisms.   3. The elevator door device according to claim 1, wherein the link mechanism having the horizontal axis rotary link and the vertical axis rotary link is provided on either the upper part or the lower part of the door, and the other side of the door is provided. The elevator door device is provided with only the vertical axis rotation link.   5. The elevator door device according to claim 1, wherein the horizontal axis rotation link is provided with a stopper for restricting a position where the safety shoe protrudes from a front end of the door. Door equipment.

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