JP5579159B2 - Elevator door lock mechanism - Google Patents

Description

  Embodiments described herein relate generally to an elevator door lock mechanism.

  2. Description of the Related Art Conventionally, as an opening / closing door that opens and closes an entrance / exit of an elevator car, a so-called single-opening opening / closing door that opens and closes the entrance as described above by sliding a plurality of doors in the same direction is used.

JP 2011-51691 A

  By the way, in the prior art, for example, when acceleration in a direction to open the doorway is applied to the open / close door due to an earthquake or the like, the open / close door with the doorway closed may open.

  Therefore, the problem to be solved by the present invention is, for example, an elevator door lock that can prevent the opening / closing door that has closed the entrance from opening even if acceleration in the direction of opening the entrance / exit acts on the opening / closing door due to an earthquake or the like. To provide a mechanism.

The elevator door lock mechanism of the embodiment includes an interference member and a lock member. The interference member is attached to the car. The lock member is pivotally attached to an open / close door that opens and closes the doorway. The lock member rotates to the interference position when acceleration in the direction of opening the doorway acts on the open / close door with the doorway closed. At the interference position, the lock member interferes with the interference member and restricts the opening / closing door from moving in the direction of opening the doorway. The lock member includes a member main body pivotally attached to the open / close door about one end portion, and a lock portion provided at one end portion of the member main body and interfering with the interference member at the interference position. A weight is attached to the other end of the.

FIG. 1 is a front view schematically showing the overall configuration of the elevator according to the first embodiment. FIG. 2 is a front view of the elevator car according to the first embodiment. FIG. 3 is a perspective view illustrating a configuration of the door lock mechanism of the elevator car according to the first embodiment. FIG. 4 is a perspective view showing the configuration of the door lock mechanism of the elevator car according to the first modification of the first embodiment. FIG. 5 is a perspective view illustrating a configuration of an elevator car door lock mechanism according to a second modification of the first embodiment. FIG. 6 is a perspective view illustrating a configuration of an elevator car door lock mechanism according to a third modification of the first embodiment.

[Embodiment 1]
FIG. 1 is a front view schematically showing the overall configuration of the elevator according to the first embodiment, FIG. 2 is a front view of the elevator car according to the first embodiment, and FIG. 3 is a diagram of the elevator according to the first embodiment. It is a perspective view which shows the structure of the door lock mechanism of a passenger car.

  The elevator 1 of this embodiment shown in FIG. 1 is installed in a hoistway of a building (also referred to as a building), and is provided with various buttons of an operating device in a car 2 and a landing device on each floor. The passenger is transported to a desired floor of the building based on call registration by operating the call button. Of course, the hoistway is provided over a plurality of floors of the building and extends linearly along the vertical direction.

  As shown in FIG. 1, the elevator 1 includes a pair of car guide rails 3, a car 2, a counterweight 4, a pair of weight guide rails 5, a main rope 6, a drive mechanism 7, and a compensator. It includes a session device 8, an emergency stop device 9, an elevator control unit 10, a door opening / closing device 11 (shown in FIG. 2), and a door lock mechanism 12 (shown in FIG. 2).

  The car guide rail 3 extends linearly and is provided in parallel with the vertical direction. The car guide rails 3 are provided in the hoistway in a parallel state with a space therebetween. The car guide rails 3 position the car 2 between them and support the car 2 so that it can be raised and lowered in the vertical direction.

  The car 2 is accommodated in the hoistway so as to be movable in the vertical direction. The car 2 includes a car frame 13 and a car room 14 for accommodating passengers. The car frame 13 is formed in a frame shape having a size that can be positioned between the pair of car guide rails 3. The car room 14 is formed in a box shape in which the doorway 19 is opened and closed by panels 21 and 22 described later. The car room 14 is positioned in the car frame 13 and attached to the car frame 13. In the car room 14, various buttons of an operation device for performing various operations of the elevator 1 are provided.

  The counterweight 4 is accommodated in the hoistway so as to be movable in the vertical direction.

  The weight guide rail 5 extends linearly and is provided in parallel with the vertical direction. The weight guide rails 5 are provided in the hoistway in a parallel state with a space therebetween. The weight guide rails 5 position the counter weight 4 between them and support the counter weight 4 so as to be movable up and down in the vertical direction.

  The main rope 6 has a car 2 fixed to one end and a counterweight 4 fixed to the other end. The main rope 6 is stretched over the drive sheave 15 of the drive mechanism 7 so that the car 2 and the counterweight 4 are moved up and down in directions opposite to each other. That is, the elevator 1 is a so-called elevator type elevator. Thus, the main rope 6 moves up and down the cage 2 and the counterweight 4 in a fishing bottle manner by being moved by the hoisting machine.

  As shown in FIG. 1, the drive mechanism 7 is provided, for example, in a machine room provided above the hoistway. The drive mechanism 7 is a well-known hoisting machine (not shown) and a driving sheave 15 attached to the output shaft of the hoisting machine. And. The hoisting machine is attached to the floor of the machine room. The drive sheave 15 is hung on the upper side by a portion located between the counterweight 4 of the main rope 6 and the car 2. In the drive mechanism 7, the hoisting machine rotates the drive sheave 15 to move the main rope 6 in the hoistway to raise and lower the car 2 and the counterweight 4. Moreover, the hoisting machine of the drive mechanism 7 is provided with a brake that restricts movement of the main rope 6 (that is, does not move the main rope 6).

  The compensation device 8 includes a compensation rope 16 having one end attached to the car 2 and the other end attached to the counterweight 4, and a compensation sheave 17 hung on the compensation rope 16. The compensation device 8 suppresses the vibration of the car 2 and the counterweight 4 that are being lifted and cancels the weight of the main rope 6 when the car 2 and the counterweight 4 are lifted and lowered in the hoistway.

  As shown in FIG. 1, the emergency stop device 9 includes a pair of emergency stop mechanisms 49 attached to the bottom surface of the car 2. The emergency stop device 9 causes the emergency stop mechanism 49 to stop the car 2 relative to the car guide rail 3 when the car 2 descends at a speed higher than a predetermined speed.

  The elevator control unit 10 is an arithmetic device that is provided in the above-described machine room or the like and includes a RAM, a ROM, a CPU, an input / output port, and a storage device (not shown). As shown in FIG. 1, a tail cord 18 having one end attached to the car 2 is connected to the elevator control unit 10. The tail cord 18 is a cord in which power lines and transmission lines are bundled, and connects the operation device in the car 2 and the elevator control unit 10. The elevator control unit 10 is connected to the operation device of the car 2, the hall call device of each floor, the drive mechanism 7, the door opening and closing device 11, and the like, and controls the entire elevator 1. In particular, when the elevator control unit 10 is positioned at a position where a later-described panel 21, 22 closes the entrance / exit 19 while the car 2 is moving up and down, the elevator 21 is in a direction in which the panel 21, 22 closes the entrance / exit 19. Generate torque. In addition, when information indicating that the contact 30 protrudes from the main body 29 is input from the door opening switch 23 while the car 2 is being lifted, the elevator control unit 10 stops the hoisting machine of the drive mechanism 7. . That is, the elevator control unit 10 stops the raising / lowering operation of the car 2 when the panels 21 and 22 open the entrance 19 while the car 2 is being raised and lowered.

  As shown in FIG. 2, the door opening / closing device 11 includes a driving unit 20, a driving side panel 21 as an opening / closing door, a driven side panel 22 as an opening / closing door, a catch unit (not shown), and a door opening switch 23. I have. The driving unit 20 includes a motor 24 provided above the entrance / exit 19 of the car compartment 14 of the car 2 and at one end in the width direction of the car compartment 14, and above the entrance / exit 19 of the car compartment 14 of the car 2. A driven sheave 25 provided at the other end in the width direction of the car chamber 14 and an endless belt 26 are provided. A drive sheave 27 is attached to the output shaft of the motor 24. The driven sheave 25 is supported in the car compartment 14 of the car 2 so as to be rotatable about the axis. The endless belt 26 is formed in an endless annular shape and is stretched around the drive sheave 27 and the driven sheave 25. The endless belt 26 circulates around the drive sheave 27 and the driven sheave 25 as the motor 24 rotates the drive sheave 27.

  The drive side panel 21 and the driven side panel 22 have the same shape as each other and are formed in a plate shape having a size capable of closing approximately half of the entrance / exit 19. The driving side panel 21 and the driven side panel 22 are respectively supported by the car room 14 of the car 2 so as to be movable in the horizontal direction by guide rails 48 extending in the horizontal direction at the upper end of the car room 14. Yes. The drive side panel 21 is positioned below the drive sheave 27 by the guide rail 48 and closes the half of the doorway 19 near the motor 24, and is positioned below the driven sheave 25 to open the doorway 19. It can move freely between. The driven side panel 22 is positioned at the center between the sheaves 25 and 27 by the guide rail 48 and closes the half of the doorway 19 near the driven sheave 25 and is positioned below the driven sheave 25 and opens the doorway 19. It can move freely between.

  That is, the drive side panel 21 is disposed closer to the motor 24 than the driven side panel 22 in a state where the panels 21 and 22 close the entrance 19. A belt grip 28 fixed to an endless belt 26 is attached to the drive side panel 21. The drive side panel 21 moves in the horizontal direction integrally with the endless belt 26 by attaching the belt grip 28. The driving side panel 21 and the driven side panel 22 move in the horizontal direction integrally with the endless belt 26, so that the driving side panel 21 and the driven side panel 22 are arranged in the width direction of the car compartment 14 of the car 2 and close the entrance 19. It moves in the horizontal direction with respect to the car 2 over the position where the doorway 19 is opened. The driving side panel 21 and the driven side panel 22 open and close the entrance / exit 19.

  The catch portion includes the driving side panel 21 and the driven side panel 22 so that the driven side panel 22 moves in conjunction with the driving side panel 21 when the driving side panel 21 moves in the horizontal direction integrally with the endless belt 26. And The driving side panel 21 and the driven side panel 22 move in the same direction along the horizontal direction over the position where the doorway 19 is closed and the position where the door 19 is opened as the driving side panel 21 moves integrally with the endless belt 26. To do. For this reason, the car 2 uses a so-called single-opening type opening / closing door in which the driving side panel 21 and the driven side panel 22 as opening / closing doors move in the same direction. In the present embodiment, when the panels 21 and 22 move from the position for closing the doorway 19 to the position for opening, the panel 21 and 22 move in the direction indicated by the arrow O in FIG. In the present embodiment, when the panels 21 and 22 move from the opened position to the closed position, they move in the direction indicated by the arrow C in FIG. Note that the arrow O is in the direction of opening the entrance 19 and the arrow C is in the direction of closing the entrance 19.

  The door opening switch 23 includes a main body portion 29 attached to the driving side panel 21 and a contact 30 provided so as to be able to project and retract from the main body portion 29 and urged in a direction protruding from the main body portion 29. Yes. The door opening switch 23 outputs information indicating whether or not the contact 30 has been submerged in the main body 29, that is, whether or not the panels 21 and 22 are positioned to close the entrance / exit 19 toward the elevator control unit 10. . When the door opening switch 23 is positioned at the position where the driving side panel 21 closes the entrance 19, the contact 30 is shown in FIG. 3 by the contact piece 31 (shown in FIG. 2) fixed to the car compartment 14 of the car 2. As shown in FIG. The door opening switch 23 outputs information indicating that the contact 30 has been submerged, that is, information indicating that the panels 21 and 22 are positioned at the position where the door 19 is closed to the elevator control unit 10. When the door opening switch 23 is moved from the position where the driving side panel 21 closes the doorway 19 to the position where the door 19 is opened, the contact 30 protrudes from the main body 29 by the contact piece 31 as shown by the solid line in FIG. The door opening switch 23 outputs information indicating that the contact 30 protrudes from the main body 29, that is, information indicating that the panels 21 and 22 are not positioned at the position where the door 19 is closed to the elevator control unit 10.

  As shown in FIGS. 2 and 3, the door lock mechanism 12 includes an interference member 32, a lock member 33, and a weight 38. The interference member 32 is attached to the car compartment 14 of the car 2. The interference member 32 is provided above the entrance / exit 19 of the car compartment 14 of the car 2. The interference member 32 is integrally provided with a fixing portion 34 that is stacked above the entrance / exit 19 of the cab 14 and an interference portion 35 that is erected from the fixing portion 34. The fixing portion 34 is fixed above the entrance / exit 19 of the cab 14.

  The lock member 33 is integrally provided with a band plate-like member main body 36 and a lock portion 37 provided at one end 36 a of the member main body 36 (corresponding to the upper end of the lock member 33). That is, a lock portion 37 that interferes with the interference member 36 at the interference position is provided at the upper end portion of the lock member 33. One end 36 a of the member main body 36 is rotatably attached to the upper end of the drive side panel 21. The member main body 36 is disposed closer to the motor 24 than the interference member 32 when the panels 21 and 22 are positioned at the position where the door 19 is closed. The lock portion 37 extends from the one end portion 36 a of the member main body 36 toward the interference member 32. When the longitudinal direction of the member main body 36 is parallel to the vertical direction, the lock portion 37 is not aligned with the interference portion 35 of the interference member 32 in the horizontal direction (positioned below the interference portion 35). Further, the lock portion 37 is in a state in which the member main body 36 is inclined such that the other end portion 36b (corresponding to the lower end portion of the lock member 33) of the member main body 36 is positioned closer to the driven sheave 25 than the one end portion 36a. Aligned horizontally with the interference portion 35 of the interference member 32. When the panels 21 and 22 are positioned at the position where the doors 19 are closed, the lock unit 37 is spaced from the interference unit 35 in the horizontal direction. The weight 38 is attached to the other end portion 36 b of the member main body 36 of the lock member 33.

  In the door lock mechanism 12 having the above-described configuration, when the acceleration in the direction of arrow O does not act on the panels 21 and 22, the lock member 33 is positioned at the unlock position indicated by the solid line in FIG. It is done. In the unlocked position, the longitudinal direction of the member main body 36 of the lock member 33 is parallel to the vertical direction, and the lock portion 37 is not aligned with the interference portion 35 in the horizontal direction. For this reason, when the lock member 33 is positioned at the unlock position, the lock portion 37 does not interfere (contact) with the interference portion 35 even if the panels 21 and 22 move from the closing position to the opening position. When the lock member 33 is positioned at the unlocking position, the panels 21 and 22 are allowed to open the entrance 19 when the panels 21 and 22 are moved from the position for closing the entrance 19 to the opening position. Thus, the lock member 33 is positioned at the unlocking position that allows the panels 21 and 22 to open the door 19 when the acceleration in the direction of arrow O does not act on the panels 21 and 22 with the door 19 closed.

  When an acceleration in the direction of arrow O acts on the panels 21 and 22 with the doorway 19 closed relative to the cab 14 when an earthquake or the like occurs, the door lock mechanism 12 Also works. For this reason, the lock member 33 rotates around the one end 36 a in a direction in which the other end 36 b of the member main body 36 approaches the driven sheave 25. Then, the lock member 33 rotates to the interference position where the lock portion 37 indicated by a dotted line in FIG. 3 is aligned with the interference portion 35 in the horizontal direction. In the interference position, even if the acceleration in the direction of arrow O acting on the panels 21 and 22 described above exceeds the torque generated by the motor 24, the panels 21 and 22 move in the direction of arrow O that opens the door 19, The lock portion 37 interferes (contacts) the interference portion 35 before the contact 30 of the open switch 23 protrudes. For this reason, at the interference position, the lock member 33 restricts the movement of the panels 21 and 22 in the direction of the arrow O that opens the doorway 19 due to the lock portion 37 interfering (contacting) with the interference portion 35. Thus, when an earthquake or the like occurs, the door lock mechanism 12 locks the panels 21 and 22 when the acceleration in the direction of arrow O acts on the panels 21 and 22 with the entrance 19 closed relative to the cab 14. To do.

  In addition, when the lock member 33 is positioned at the interference position and the acceleration in the direction of arrow O does not act on the panels 21 and 22 with the doorway 19 closed, the door lock mechanism 12 is caused by gravity acting on the weight 38. The lock member 33 rotates from the interference position to the lock release position.

  Further, the door lock mechanism 12 is provided with a pair of restricting protrusions 39 on the driving side panel 21 for restricting the member main body 36 of the lock member 33 from rotating beyond the unlock position and the interference position.

  According to the door lock mechanism 12 of the elevator 1 of the first embodiment, when the acceleration in the direction of the arrow O that opens the entrance 19 acts on the panels 21 and 22 that close the entrance 19, the lock member 33 is attached to the car 2. It rotates to the interference position that interferes with the member 32. For this reason, even if acceleration in the direction of the arrow O that opens the entrance / exit 19 acts on the panels 21 and 22 with the entrance / exit 19 closed, the lock member 33 interferes with the interference member 32 and the panels 21 and 22 may move. Be regulated. Therefore, even if the acceleration in the direction of arrow O that opens the doorway 19 acts on the panels 21 and 22 due to an earthquake or the like, it is possible to prevent the panels 21 and 22 that close the doorway 19 from opening. Therefore, even if an earthquake or the like occurs while the car 2 is moving up and down, it is possible to prevent the cars 21 and 22 from being opened before the car 2 arrives at the landing on the nearest floor and the car 2 from stopping.

  Further, according to the door lock mechanism 12, the lock member 33 is positioned at the unlocking position when the acceleration in the direction of the arrow O that opens the doorway 19 does not act on the panels 21 and 22 that close the doorway 19. For this reason, if the acceleration in the direction of arrow O that opens the entrance / exit 19 does not act on the panels 21, 22 with the entrance / exit 19 closed, the interference member 32 and the lock member 33 restrict the panels 21, 22 from opening / closing the entrance / exit 19. Not (acceptable). Therefore, if the acceleration in the direction of arrow O that opens the entrance / exit 19 does not act on the panels 21, 22 with the entrance / exit 19 closed, the panels 21, 22 can reliably open / close the entrance / exit 19.

  Further, according to the door lock mechanism 12, the one end portion 36 a of the lock member 33 is rotatably attached to the drive side panel 21, and the weight 38 is attached to the other end portion 36 b of the lock member 33. For this reason, the lock member 33 can reliably rotate between the interference position and the lock release position.

  Further, according to the door lock mechanism 12, when the acceleration in the direction of the arrow O that opens the entrance / exit 19 does not act on the panels 21 and 22, the lock member 33 rotates from the interference position to the unlock position due to the gravity acting on the weight 38. To do. For this reason, when the acceleration in the direction of the arrow O that opens the entrance / exit 19 does not act on the panels 21, 22, the interference members 32 and the lock member 33 do not regulate that the panels 21, 22 open and close the entrance / exit 19, The panels 21 and 22 can reliably open and close the entrance 19.

[Modification 1]
FIG. 4 is a perspective view showing the configuration of the door lock mechanism of the elevator car according to the first modification of the first embodiment. In FIG. 4, the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In the first modification of the first embodiment, the door lock mechanism 12 includes a tension coil spring 40 as an urging means, as shown in FIG. The tension coil spring 40 is provided closer to the motor 24 than the member main body 36 of the lock member 33. One end of the tension coil spring 40 is attached to the drive side panel 21, and the other end is attached to the weight 38, that is, the other end portion 36 b of the member main body 36 of the lock member 33. The tension coil spring 40 urges the other end portion 36b of the member main body 36 of the lock member 33 toward the motor 24 along the horizontal direction. That is, the tension coil spring 40 urges the lock member 33 from the interference position toward the unlock position in the opposite direction of the torque generated by the motor 24 when the panels 21 and 22 are positioned at the position where the door 19 is closed. Yes.

  According to the door lock mechanism 12 of the first modification of the first embodiment, in addition to the effects of the first embodiment, the tension coil spring 40 that biases the lock member 33 from the interference position toward the lock release position is provided. For this reason, by appropriately changing the biasing force of the tension coil spring 40, the magnitude of the acceleration in the direction of the arrow O at which the lock member 33 rotates from the unlock position to the interference position can be changed as appropriate. Therefore, by appropriately changing the urging force of the tension coil spring 40, the magnitude of the acceleration in the arrow O direction that restricts the locking members 33 and the like from opening the panels 21 and 22 can be changed as appropriate.

[Modification 2]
FIG. 5 is a perspective view illustrating a configuration of an elevator car door lock mechanism according to a second modification of the first embodiment. In FIG. 5, the same parts as those in the first embodiment and the first modification described above are denoted by the same reference numerals and description thereof is omitted.

  In the second modification of the first embodiment, as shown in FIG. 5, in the door lock mechanism 12, the lock member 33 includes a restriction releasing member 41 attached to the lock portion 37. The restriction release member 41 is formed in a band plate shape or a column shape, and is attached to the distal end portion of the lock portion 37 so as to be freely rotatable. The restriction release member 41 includes a long hole 42 extending in the longitudinal direction at the center of the restriction release member 41 and a restriction pin 43 that is fixed to the drive side panel 21 and is movable in the long hole 42. And is supported in parallel or substantially parallel to the vertical direction.

  Further, the restriction release member 41 is slidable in the vertical direction as the restriction pin 43 moves in the elongated hole 42. When the lock release member 33 is positioned at the lock release position indicated by the solid line in FIG. 5, the restriction release member 41 interferes (contacts) with the interference part 35 without being aligned with the interference part 35 of the interference member 32 in the horizontal direction. There is no. When the lock member 33 is positioned at the interference position indicated by the dotted line in FIG. 5, the restriction release member 41 is aligned with the interference portion 35 of the interference member 32 in the horizontal direction and interferes (contacts) with the interference portion 35.

  As in the first embodiment, the door lock mechanism 12 according to the second modification of the first embodiment positions the restriction release member 41 of the lock member 33 at the lock release position when acceleration in the direction of the arrow O does not act on the panels 21 and 22. Panel 21, 22 allowing the door 19 to open. When an earthquake or the like occurs, the door lock mechanism 12 positions the restriction release member 41 of the lock member 33 at the interference position when acceleration in the direction of arrow O acts on the panels 21 and 22 relative to the cab 14. Therefore, the panels 21 and 22 are restricted from moving in the direction of opening the doorway 19.

  According to the door lock mechanism 12 of the second modified example, in addition to the effects of the first embodiment, the restriction release member 41 is attached to the lock portion 37, so that the interference member 32 and the lock member 33 are separated. In addition, when the member main body 36 of the lock member 33 rotates, the restriction release member 41 can be interfered (contacted) with the interference portion 35 of the interference member 32. Therefore, even when the interference member 32 and the lock member 33 are separated from each other, even if acceleration in the direction of the arrow O that opens the doorway 19 due to an earthquake or the like acts on the panels 21 and 22, the panel 21 that closes the doorway 19 is closed. , 22 can be prevented from opening.

[Modification 3]
FIG. 6 is a perspective view illustrating a configuration of an elevator car door lock mechanism according to a third modification of the first embodiment. In FIG. 6, the same parts as those in the first embodiment, the first modification, and the second modification described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the third modification of the first embodiment, the restriction release member 41 of the door lock mechanism 12 is loosely inserted into the hole 45 of the guide piece 44 attached to the drive side panel 21 to be parallel or substantially parallel to the vertical direction. It is supported.

  Further, the restriction release member 41 is freely inserted in the hole 45 of the guide piece 44 and is movable in the vertical direction by moving in the hole 45. When the lock member 33 is positioned at the lock release position, the restriction release member 41 does not line up with the interference portion 35 of the interference member 32 in the horizontal direction and does not interfere (contact) with the interference portion 35. When the lock member 33 is positioned at the interference position, the restriction release member 41 is aligned with the interference portion 35 of the interference member 32 in the horizontal direction and interferes (contacts) with the interference portion 35.

  In the door lock mechanism 12 of the third modification of the first embodiment, as in the first and second modifications, if the acceleration in the arrow O direction does not act on the panels 21 and 22, the restriction release member 41 of the lock member 33 is Positioned in the unlocked position, allowing the panels 21 and 22 to open the doorway 19. When an earthquake or the like occurs, the door lock mechanism 12 positions the restriction release member 41 of the lock member 33 at the interference position when acceleration in the direction of arrow O acts on the panels 21 and 22 relative to the cab 14. Therefore, the panels 21 and 22 are restricted from moving in the direction of opening the doorway 19.

  In the third modification, instead of the restriction protrusion 39, a restriction hole 46 provided in the member main body 36 of the lock member 33, and a restriction protrusion 47 that protrudes from the drive side panel 21 and enters the restriction hole 46. It has. The restriction hole 46 is formed in an arc shape centering on the rotation center of the one end portion 36 a of the member main body 36 of the lock member 33. The restriction convex part 47 is movable in the restriction hole 46. In the third modification, the member hole 36 of the lock member 33 is restricted from rotating beyond the unlocking position and the interference position by the restriction hole 46 and the restriction protrusion 47 that can move in the restriction hole 46. .

  According to the door lock mechanism 12 of the third modification, in addition to the effects of the first embodiment, the restriction release member 41 is attached to the lock portion 37, so that the interference member 32 and the lock member 33 are Even when they are separated from each other, when the member main body 36 of the lock member 33 rotates, the restriction release member 41 can be interfered (contacted) with the interference portion 35 of the interference member 32. Therefore, even when the interference member 32 and the lock member 33 are separated from each other, even if acceleration in the direction of the arrow O that opens the doorway 19 due to an earthquake or the like acts on the panels 21 and 22, the panel 21 that closes the doorway 19 is closed. , 22 can be prevented from opening.

  Although some embodiments and modifications of the present invention have been described, these embodiments and modifications are presented as examples and are not intended to limit the scope of the invention. These embodiments and modifications can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  For example, the tension coil spring 40 as the biasing means shown in the first modification may be applied to the second and third modifications, and the restriction hole 46 and the restriction protrusion 47 shown in the third modification are implemented. You may apply to the form 1, the modification 1, and the modification 2. Various members may be used as the biasing means instead of the tension coil spring 40. Furthermore, in the present invention, only one open / close door may be provided.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Car 12 Door lock mechanism 19 Entrance / exit 21 Drive side panel (open / close door)
22 Driven side panel (open / close door)
32 Interference member 33 Lock member 36a One end (upper end)
36b The other end (lower end)
38 weight 40 tension coil spring (biasing means)
O Opening direction

Claims (3)

In the door lock mechanism of the elevator that moves horizontally with respect to the elevator car and locks the opening and closing door that opens and closes the entrance,
An interference member attached to the car;
When acceleration in the direction of opening the doorway is applied to the door that is pivotally attached to the door and closes the doorway, the door is rotated to an interference position that interferes with the interference member. A locking member for restricting movement in the direction of opening the doorway ,
The lock member includes: a member main body rotatably attached to the opening / closing door with one end as a center; and a lock portion provided at one end of the member main body and interfering with the interference member at the interference position. Comprising a weight attached to the other end of the member body ,
Elevator door lock mechanism. An upper end portion of the lock member is pivotally attached to the open / close door, and a weight is attached to a lower end portion of the lock member. The upper end portion of the lock member is attached to the interference member at the interference position. Interfering lock part is provided,
In the state where the lock member is positioned at the interference position, if the acceleration in the direction of opening the entrance / exit does not act on the opening / closing door that closed the entrance / exit, the lock member is caused to interfere with the interference by gravity acting on the weight. Rotate from position to unlock position,
The elevator door lock mechanism according to claim 1. Urging means for urging the lock member from the interference position toward the unlock position;
The elevator door lock mechanism according to claim 1 or 2.

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