JP6494579B2 - Landing door unlocking structure - Google Patents

Description

  The present invention relates to a landing door unlocking structure that operates when a landing door is manually opened by manually releasing a lock that prevents the elevator landing door from being manually opened.

  The elevator is configured such that, during normal operation, when the basket reaches the landing and the basket side door opens, the lock that stops the landing door with respect to the landing stationary portion is released and the landing door opens. However, at the time of an elevator failure or maintenance inspection, including when passengers are trapped in the cage, the landing doors must be opened and closed for passenger rescue etc. even if it is not possible to confirm whether the cage is landing on the platform. It may be necessary. For such a case, as described in Patent Document 1, when the key is inserted from the key insertion portion provided on the landing side of the landing door, the elevator is unlocked. The landing door is opened manually.

Japanese Utility Model Publication No. 58-170365

  When the key is inserted into the key insertion part and the landing door is opened, when the landing door opens long enough for a person to pass through without the car landing on the landing, maintenance workers, etc. ) May fall.

  An object of the present invention is that even if the lock mechanism for preventing the manual opening operation of the landing door is released, the landing door does not continuously open to the fully open position by one operation, so that a maintenance worker or the like can enter the hoistway. An object of the present invention is to provide a landing door unlocking structure that can prevent the vehicle from falling down.

  The landing door unlocking structure according to the present invention is a landing door unlocking structure that operates when the landing door is manually opened by manually releasing the lock mechanism that prevents the elevator landing door from being manually opened. The hanger having a hanger roller that hangs the landing door and moves on the door rail, and moving by a force from a landing unlocking rod inserted in a key insertion portion provided around the landing door, A latch member that moves a locking member included in the lock mechanism to a lock release position where the lock mechanism is released, a wire member having one end attached to the latch member, and a wire member attached to the other end of the wire member, When the hanger roller moves from the fully closed position to the opening side in the state where the locking member is located at the unlocking position, the landing door is fully opened. And a roller stationary member for static friction force the hanger rollers are clamped between the hanger rollers and the door rail relative to the door rail on.

According to the present invention, when the hanger roller moves from the fully closed position to the opening side while the locking member is moved to the unlocked position by the landing unlocking rod inserted into the key insertion portion, the hanger roller but to rest against the door rail crowded viewed engage the rollers stationary member before the hall door is fully opened. Therefore, by adjusting the opening width at the position where the landing door temporarily stops based on the stationary state of the hanger roller so that the person cannot pass through, the landing door is in the fully closed position even when the basket is not landing. The maintenance worker or the like does not fall into the hoistway during the period from when it starts to move until it stops. Therefore, since maintenance workers can confirm the presence or absence of a cage at the position where the landing door is once stationary, and can continue the work after recognizing the presence or absence of the cage, the maintenance workers fall down to the hoistway. Can be prevented.

  Moreover, in this invention, while attaching to the said hanger, you may provide the guide member which guides the said wire material so that a movement is possible.

  According to the above configuration, it is easy to place the wire at a desired position, and thus it becomes easy to place the roller stationary member at a desired position.

  In the present invention, the roller stationary member sandwiched between the hanger roller and the door rail may further include a biasing member that biases the roller stationary member from the position sandwiched between the hanger roller and the door rail. Good.

  According to the above configuration, the urging member urges the roller stationary member to the side where the roller stationary member is withdrawn from the nipping position between the hanger roller and the door rail. Therefore, when the landing unlocking rod is pulled out from the key insertion portion and the force applied to the latch member from the landing unlocking rod disappears, the roller stationary member can be reliably withdrawn from the clamping position, and the landing door can be It can be smoothly moved from a position once stationary.

  In the present invention, the wire may be a wire, the guide member may be a tube, and the roller stationary member may be a wedge.

  According to the said structure, while being able to make the landing door lock release structure excellent in intensity | strength and rigidity, it can comprise simply and cheaply, and also a hanger roller can be once stopped still reliably.

  According to the landing door unlocking structure according to the present invention, even if the lock mechanism for preventing the manual opening operation of the landing door is released, the landing door does not continuously open to the fully opened position in one operation, and maintenance work is performed. It is possible to prevent a member or the like from falling into the hoistway.

It is a model front view of the landing door lock cancellation | release structure which concerns on one Embodiment of this invention. It is a model front view which shows the structure of the front end side of a landing unlocking stick | rod. It is a schematic diagram showing the structure around the edge part by the side of the hanger roller in a tube.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. In the following, when a plurality of embodiments and modifications are included, it is assumed from the beginning that a new embodiment is constructed by appropriately combining these characteristic portions.

  FIG. 1 is a schematic front view of a landing door unlocking structure 50 according to an embodiment of the present invention. In FIG. 1, the X direction indicates the width direction of the landing door 10, the Y direction indicates the thickness direction of the landing door 10, and the Z direction indicates the height direction (vertical direction) of the landing door 10. .

  As shown in FIG. 1, a landing door unlocking structure 50 includes a hanger 1, a latch member 2, a metal wire 3 as an example of a wire, a metal tube 4 as an example of a guide member, and a roller. A wedge 5 as an example of a stationary member and a coil spring 6 as an example of an urging member are provided.

  The hanger 1 is a rectangular plate material having a predetermined width in the Y direction and extending in the Z direction, and a landing door 10 is fixed to the lower end. In addition, a hanger roller 11 is rotatably attached to the center portion of the hanger 1, and the hanger roller 11 is fixed on the landing side and placed on a door rail 20 extending in the X direction. Therefore, the landing door 10 is suspended from the door rail 20 via the hanger roller 11 and the hanger 1, and the landing door 10 moves in the X direction when the hanger roller 11 rotates on the door rail 20. To do. The lower end portion of the hanger 1 is bent in the Y direction, and this portion is fixed to the plate portion 55 protruding in the Y direction at the upper portion of the landing door 10 with a bolt.

  The latch member 2 is attached to the landing door 10 so as to be movable up and down. The latch member 2 is included in the lock mechanism 30 by moving upward by a force from a landing unlocking rod 40 (see FIG. 2) inserted into a through hole 18 as a key insertion portion provided in the landing door 10. The locking member 31 is moved to the unlock position where the lock is released.

  Specifically, the lock mechanism 30 includes a locking member 31 and a stationary side locking member 32. The locking member 31 is attached to the hanger 1 so as to be rotatable about the central axis of the pin 35 that is a fastening member. On the other hand, the stationary side locking member 32 is attached to a frame (not shown) installed at the elevator hall so as not to move. The locking member 31 has a locking portion 31a that is bent downward in the Z direction on the distal end side, and the stationary locking member 32 has a locking portion 32a that is bent upward in the Z direction on the distal end side. When the landing door 10 is in the fully closed state and the locking member 31 is not receiving the force from the latch member 2, the locking portion 32 a of the stationary side locking member 32 is more than the locking portion 31 a of the locking member 31. Is also located on the inner side in the X direction (center side of the landing door 10) and overlaps with the locking portion 31a of the locking member 31 when viewed from the X direction. Therefore, when the landing door 10 moves in the opening direction from the fully closed state with the locking member 31 not receiving the force from the latch member 2, the locking portion 31a of the locking member 31 is locked on the stationary side. It is locked by the locking portion 32a of the member 32, and the landing door 10 cannot be moved.

  The latch member 2 is a bar member and extends in the Z direction. The latch member 2 is located above the through hole 18 in the Z direction. The latch member 2 is attached to a plate portion 55 provided so as to protrude in the Y direction in order to fix the hanger 1 to the landing door 10 so as to be movable in the Z direction. The plate portion 55 is provided with a through hole through which the latch member 2 is inserted, and the latch member 2 has a flange portion 57 having a diameter larger than the diameter of the through hole above the through hole in the Z direction. As a result, the latch member 2 cannot move downward in the Z direction from the position where the flange portion 57 abuts on the plate portion 55.

  While the through hole 18 is provided in the landing door 10, the latch member 2 is disposed on the back side of the landing door 10, and the through hole 18 and the latch member 2 have different Y-direction positions. In the front view shown in FIG. 1, most of the latch member 2 overlaps the through hole 18 when viewed from the Z direction. Unlike the example described with reference to FIG. 1, the key insertion portion may not be provided on the landing door 10 itself but may be provided around the landing door 10.

  FIG. 2 is a schematic front view showing the structure of the front end side of the landing unlocking rod 40 for releasing the lock mechanism 30. As shown in FIG. 2, the landing unlocking bar 40 has a main body portion 41 extending in one direction and a pressing portion 42 disposed on the distal end side of the main body portion 41. It extends in a direction substantially orthogonal to the extending direction of the portion 41. The length b of the pressing portion 42 is shorter than the diameter of the through hole 18 indicated by a in FIG. Accordingly, the pressing portion 42 can pass through the through hole 18, and after a maintenance worker or the like passes the pressing portion 42 through the through hole 18, the main body portion 41 is moved to the latch member 2 side in the Z direction. By moving upward, the latch member 2 can be moved upward in the vertical direction by the pressing portion 42.

  Referring to FIG. 1 again, when the latch member 2 moves upward in the Z direction by the force in the Z direction from the landing unlocking rod 40 (see FIG. 2), the latch member 2 moves the locking member 31 upward in the Z direction. Press. Then, by the pressing, the locking member 31 rotates counterclockwise with respect to the hanger 1, and the locking portion 31 a of the locking member 31 moves to the unlocking position in the Z direction. In this unlocked position, the locking mechanism 30 is released without the locking portion 31a of the locking member 31 overlapping the locking portion 32a of the stationary side locking member 32 when viewed from the Y direction.

  One end of the wire 3 is fixed to the end of the latch member 2 on the upper side in the Z direction. Moreover, the tube 4 is comprised by piping which consists of metal materials, such as steel and stainless steel, for example, and is attached to the hanger 1 by welding, bolting, etc. One end of the tube 4 is disposed so as to be close to the upper end side of the latch member 2, and the other end of the tube 4 is disposed so as to be close to a contact portion between the hanger roller 11 and the door rail 20. The wire 3 extends from the latch member 2, passes through the tube 4, and protrudes from the other end of the tube 4.

  FIG. 3 is a schematic diagram showing the structure around the end of the tube 4 on the hanger roller 11 side.

  As shown in FIG. 3, the wedge 5 is fixed to the tip of the wire 3 on the hanger roller 11 side. In a state where the wedge 5 is fixed to the wire 3, the pointed portion 60 of the wedge 5 is located on the leading side. The coil spring 6 is disposed between the other end of the tube 4 and the wedge 5. More specifically, one end portion of the coil spring 6 is attached to the other end portion of the tube 4, and the other end portion of the coil spring 6 is attached to the end surface 88 on the opposite side of the wedge 60 from the pointed portion 60 side. The coil spring 6 has a natural length in a state in which the latch member 2 is not pressed by the landing unlocking rod 40 and the lock mechanism 30 is not released.

  In the above configuration, when a maintenance worker or the like moves the latch member 2 upward in the Z direction with the landing unlocking rod 40 inserted into the through hole 18 in order to release the lock mechanism 30, the latch member 2 moves upward in the Z direction. The other end of the wire 3 protrudes from the tube 4 toward the hanger roller 11, and the wedge 5 moves toward the hanger roller 11 so as to widen the coil spring 6 and contacts the hanger roller 11.

In this state, the maintenance worker or the like, moving the landing door 10 (see FIG. 1) in the opening direction from the fully closed position, pulling the wedge 5 hanger roller 11 is in contact crowded viewed mesh. Before the landing door 10 is fully opened, the hanger rollers 11 by the wedge 5 that elaborate viewed engage between the door rail 20 to the hanger roller 11 is stationary by the frictional force against the door rail 20, the movement of the landing door 10 Stop. Therefore, a maintenance worker or the like can visually recognize whether or not the basket is landing by the opening generated by the movement of the landing door 10 until the landing is stopped by the frictional force.

Pressing the other hand, in a state in which the landing door 10 is stationary by the frictional force caused by the inclusive viewed engage the wedge 5, the landing lock off rod 40 is withdrawn from the through-hole 18, the landing lock disconnect rod 40 the latch member 2 The power to make the other end of the wire 3 protrude toward the hanger roller 11 side disappears. Then, the gravity on the lower side in the Z direction acting on the latch member 2 and the restoring force for the coil spring 6 to return to the natural length are combined, and the wire 3 is connected to the tube 4 until the coil spring 6 becomes the natural length. A pulling force is drawn in. The pulling force is larger than the maximum static friction force that is expected to be generated in the wedge 5. As a result, when the hall unlocking rod 40 is pulled out from the through hole 18, the wire 3 is pulled into the tube 4 until the coil spring 6 has a natural length, and the wedge 5 is pulled by the hanger roller 11 and the door rail 20. Withdrawing from the sandwiched position, the landing door 10 becomes movable again.

According to the above embodiment, the hanger roller 11 is moved to the side where the landing door 10 opens from the fully closed position in a state where the locking member 31 is moved to the unlocking position by the landing unlocking rod 40 inserted into the through hole 18. moving, before landing door 10 is fully opened, the hanger rollers 11 to rest against the door rail 20 to wedge 5 crowded viewed mesh. Therefore, even when the cage is not landed by adjusting the opening width at the position where the landing door 10 once stops based on the rest of the hanger roller 11 due to the contact with the wedge 5 to a width that a person cannot pass through. In the period from when the landing door 10 starts moving from the fully closed position to once stopped, the maintenance worker or the like does not fall into the hoistway. Therefore, since maintenance workers can confirm the presence / absence of the basket at the position where the landing door 10 is once stopped, the maintenance worker etc. can continue the work after recognizing the presence / absence of the basket, so the maintenance worker etc. falls to the hoistway Can be prevented.

  Moreover, since the tube 4 which is attached to the hanger 1 and guides the wire 3 so as to be movable is provided, the wire 3 is easily disposed at a desired position, and the wedge 5 is easily disposed at a desired position.

  Further, the coil spring 6 biases the wedge 5 to the side where the wedge 5 is withdrawn from the position where it is sandwiched between the hanger roller 11 and the door rail 20. Therefore, when the landing unlocking rod 40 is pulled out from the through hole 18 and the force applied to the latch member 2 from the landing unlocking rod 40 disappears, the wedge 5 is held from the position where it is held between the hanger roller 11 and the door rail 20. The landing door 10 can be reliably withdrawn, and the landing door 10 can be smoothly moved from the position where it is once stationary.

  Furthermore, since the wire is composed of the wire 3, the guide member is composed of the tube 4, and the roller stationary member is composed of the wedge 5, the landing door unlocking structure 50 can be made excellent in strength and rigidity, It can be configured simply and inexpensively, and the hanger roller 11 can also be surely stopped once.

  The present invention is not limited to the above-described embodiment and its modifications, and various improvements and modifications can be made within the matters described in the claims of the present application and their equivalent ranges.

  For example, in the above embodiment, the coil spring 6 is disposed between the tube 4 and the wedge 5 while being connected to the tube 4 and the wedge 5. However, the coil spring may be disposed between the tube and the latch member while being connected to the tube and the latch member. Alternatively, the coil spring is disposed between the tube and the roller stationary member wedge in a state where the coil spring is connected to the tube and the roller stationary member, and another coil spring is connected to the tube and the latch member. And the latch member. Alternatively, the landing door unlocking structure may include the urging member, and the roller stationary member may be withdrawn from the position sandwiched between the hanger roller and the door rail only by the gravity acting on the latch member. Moreover, although the case where the urging member is configured by the coil spring 6 has been described, the urging member may be a disc spring, a special spring (such as a bamboo spring), or the like, or may be configured by other springs.

  Moreover, although the case where a wire was comprised with the wire 3 was demonstrated, a piano wire, a hard steel wire, or a stainless steel wire etc. may be sufficient as a wire.

  Moreover, although the case where the guide member is configured by the tube 4 has been described, the guide member may be configured by a tube having a C-shaped cross section in a direction perpendicular to the extending direction. Or, without providing a guide member, in the manner of providing a plurality of wakka parts that pass the fishing line through the fishing rod, attach the wacker parts to the hangers at several positions in the extending direction of the wire material, and several wires You may restrict | limit the arrangement | positioning position of a wire by letting the wacker part pass.

  Further, although the wedge 5 is employed as a roller stationary member that causes the hanger roller 11 to be stationary with respect to the door rail 20 by a frictional force, the roller stationary member may be configured by a thin plate-shaped locking piece or the like. The roller stationary member may be formed of any shape and material as long as the roller stationary member is configured to be locked by the hanger roller and the door rail so that the hanger roller can be stationary with respect to the door rail by a frictional force.

  1 hanger, 2 latch member, 3 wire, 4 tube, 5 wedge, 6, coil spring, 10 landing door, 11 hanger roller, 18 through hole, 20 door rail, 30 locking mechanism, 31 locking member, 40 landing unlocking rod, 50 landing door unlocking structure.

Claims (4)

A landing door unlocking structure that operates when manually opening the landing door by manually releasing a lock mechanism that prevents the elevator landing door from being manually opened,
A hanger having a hanger roller that hangs the landing door and moves on the door rail,
The locking member included in the locking mechanism is moved to the unlocking position where the locking mechanism is released by moving with a force from a landing unlocking rod inserted in a key insertion portion provided around the landing door. A latch member to be
A wire rod having one end attached to the latch member;
When the hanger roller is attached to the other end of the wire and the locking member is located at the unlock position, the landing door is fully opened when the hanger roller moves from the fully closed position to the opening side. A roller stationary member that is sandwiched between the hanger roller and the door rail before the hanger roller is stationary with a frictional force against the door rail,
A landing door unlocking structure. In the landing door unlocking structure according to claim 1,
A landing door unlocking structure comprising a guide member attached to the hanger and movably guiding the wire. In the landing door unlocking structure according to claim 1 or 2,
A landing door unlocking structure comprising a biasing member that biases the roller stationary member sandwiched between the hanger roller and the door rail toward a side where the roller stationary member is retracted from the position sandwiched between the hanger roller and the door rail. In the landing door unlocking structure according to any one of claims 1 to 3,
The wire is a wire,
The guide member is a tube,
The roller stationary member is a landing door unlocking structure, which is a wedge.

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