JP5971643B2 - Elevator door lock device - Google Patents

Description

  The present invention relates to an elevator door lock device.

  Usually, elevator car doors are suspended at the upper part by rails arranged above the entrance of the car and are guided by a sill groove provided below the entrance of the car at the lower part. . Similarly, the landing door is suspended at the upper part and guided by a sill groove at the lower part.

  For example, Patent Document 1 discloses a configuration for locking the door of the elevator. In such a configuration, when the car-side sill is not in a position facing the landing-side sill, the spring biases the operating member toward the lock member, and the lock member enters the sill groove so that the door travels. Is regulated. Also, when the car-side sill comes to a position facing the landing-side sill, the solenoid is actuated, and the electromagnetic force causes the actuating member to move away from the lock member against the spring, thereby locking. The member is withdrawn from the sill groove, and the door is allowed to travel.

  Patent Document 2 discloses a configuration in which a door opening / closing operation is locked during raising / lowering of a car by restricting movement of a hanger that suspends the door.

  Further, in Patent Document 3, an iron piece is provided on a door shoe that extends downward from the lower surface of the door and is inserted into a sill groove, and an electromagnet is provided on a groove defining surface of the sill so as to face the iron piece. A configuration is disclosed in which the door shoe is brought into close contact with the groove defining surface of the sill by force to suppress opening and closing of the door while the car is moving.

  However, in the configuration disclosed in Patent Document 1, the solenoid disposed on the car side is used as a starting point, and finally the lock member disposed on the landing side is controlled. The configuration is complicated and the number of intervening parts is large. Therefore, there are problems that the manufacturing cost is increased and that maintenance and installation are troublesome. Further, at the boundary between the car side and the landing side, the permanent magnet and the attracting piece face each other in a non-contact manner, and there is no denying the possibility of causing a malfunction due to the non-contact operation. Furthermore, since the device is mounted in a small gap between the car and the hall, there is no possibility that the components will collide with each other due to shaking of the car and the like, resulting in equipment damage.

  Furthermore, although the structure disclosed in Patent Document 2 regulates the position of the hanger, the hanger is disposed above the opening of the entrance and exit, so that the door is subjected to a force to open from the inside of the cage. The distance increases from the point. Therefore, even if the movement of the hanger is restricted, the door may slightly rotate due to the moment with the hanger roller as a fulcrum, and the lower end of the door may open. Further, when a load is applied to the door in the front-rear direction (the entrance / exit direction), the locking effect cannot be expected.

  In addition, the configuration disclosed in Patent Document 3 is to prevent the car door from vibrating due to wind pressure or the like while the car is running, and the effect of preventing the door opening operation cannot be expected.

JP-A-5-132272 Japanese Utility Model Publication No. 63-48779 Japanese Patent Laid-Open No. 9-272680

  The present invention has been made in view of the above-described circumstances, and is capable of regulating an undesired operation in two directions of the door opening / closing direction and the front-rear direction without involving a complicated configuration. The purpose is to provide.

  In order to achieve the above-described object, the present invention provides a door that opens and closes an entrance, a door shoe provided at a lower portion of the door, and a threshold that has a groove that accommodates the door shoe and guides the door in the opening and closing direction. The door shoe is provided with a through hole, and the sill is provided with a plunger that can enter and leave the groove and penetrates the through hole when entering. ing.

  ADVANTAGE OF THE INVENTION According to this invention, the unpreferable operation | movement regarding the two directions of the opening-and-closing direction and the front-back direction in a door can be controlled without a complicated structure.

It is a schematic diagram which shows the elevator car door to which the door lock device of Embodiment 1 of the present invention is applied from the landing side. It is a figure which shows the lower part vicinity of a sill and a car door from the direction of arrow II of FIG. It is a figure which shows the door shoe of FIG. 2 from the direction of arrow III. It is a figure of the same aspect as FIG. 2 regarding Embodiment 2. FIG. It is a figure which shows the mechanism regarding a car door and a lock | rock from the boarding / alighting direction regarding Embodiment 3 and 4. FIG. It is a figure which shows the mechanism regarding a car door and a lock | rock from the boarding / alighting direction regarding Embodiment 5. FIG. It is a figure which shows the structure seen from the VII line of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an elevator door lock device according to the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing a door of an elevator car to which the door lock of the present embodiment is applied from the landing side. The car is provided with a car door 1 for opening and closing the doorway. In the illustrated example, the car door 1 is composed of a pair of left and right door panels 3 and 3 of a double opening type. FIG. 1 shows a fully closed state in which the pair of left and right door panels 3 and 3 are abutted on the abutting surface AF.

  A door hanger 5 is provided at the upper end of each of the door panels 3 and 3. A girder 7 disposed in the left-right direction (door opening / closing direction) is provided at the upper edge of the entrance / exit. Rails 9 are arranged on the beam 7 in the left-right direction. Each of the door hangers 5 is provided with a plurality of hanger rollers 11. As the hanger rollers 11 move along the rail 9, the horizontal movement of the door hanger 5, that is, the opening / closing movement of the door panels 3 and 3 is guided.

  In addition, a pair of winding wheels 13 and 13 are rotatably provided on the beam 7. The pair of winding wheels 13 and 13 are provided apart from each other, and a revolving member 15 that may be an endless belt or the like is wound around and stretched between them.

  The rotating member 15 is provided with a pair of connectors 17 and 17. The upper end of one connector 17 is connected to a portion of the rotating member 15 that travels above, and the lower end is connected to one door panel 3. The other connector 17 is connected to a portion of the rotating member 15 that travels below, and the lower end is connected to the other door panel 3.

  When the circling member 15 is driven by the motor 19, the pair of connecting members 17, 17 the upper traveling portion and the lower traveling portion move in opposite directions, whereby the pair of left and right door panels 3, 3 are also mutually connected. It moves in the opposite direction, that is, an opening / closing operation is performed on the entrance / exit. Such a door opening / closing mechanism is merely an example, and the door opening / closing mechanism for carrying out the present invention is not limited to this.

  The door panels 3 and 3 are guided in the opening and closing direction by a sill 21 below the door panels 3 and 3. Based on FIG.2 and FIG.3, the detail of the door lock apparatus of the elevator of this Embodiment provided in relation to a sill and a sill is demonstrated. FIG. 2 is a diagram showing the vicinity of the lower part of the sill and the car door from the direction of arrow II in FIG. 1. FIG. 3 is a view showing the door shoe of FIG. 2 from the direction of arrow III.

  As shown in FIGS. 2 and 3, a door shoe 23 is provided below the door panels 3 and 3. The door shoe 23 includes a shoe portion 23a and a support plate 23b that supports the shoe portion 23a. Further, the sill 21 has a groove 25 for accommodating the door shoe 23, particularly for accommodating the shoe portion 23a.

  The door shoe 23 is provided with a through hole 27. Specifically, as the present embodiment, the support plate 23b is provided with the through hole 27. The through-hole 27 passes through the support plate 23b below the shoe portion 23a in the front-rear direction (the method of getting on and off with the car and the landing), that is, the left-right direction on the paper surface of FIG. The door shoe 23 is fixed to the lower portion of the door panel 3 by an appropriate fastener 29 in the region above the shoe portion 23a in the support plate 23b.

  A plunger 31 is provided in the vicinity of one of the sill 21 in the front-rear direction of the groove 25. The plunger 31 extends horizontally in the front-rear direction, and is provided in the groove 25 so as to selectively enter and exit. The plunger 31 is configured to penetrate the through hole 27 when entering, as indicated by a one-dot chain line in FIG. In other drawings as well, the rush state after the plunger operation is similarly indicated by a one-dot chain line.

  The plunger 31 is one of the components of the solenoid 33. The solenoid 33 further includes a coil 35 that generates an electromagnetic force for operating the plunger 31, and a rush for constantly urging the plunger 31 in the rush direction. And a biasing spring 37.

  In the elevator door lock device according to the first embodiment configured as described above, when the car is moving up and down or stopped between floors, the solenoid 33 is demagnetized, and the plunger 31 is a urging bias spring. The car door 1 is locked by entering the through hole 27 of the door shoe 23 by the urging force 37 and the plunger 31 and the door shoe 23 are engaged with each other, so that the safety of the user can be further improved. Even if an excessive force is applied to the car door 1 in the front-rear direction, since the plunger 31 penetrates the through hole 27 of the door shoe 23, the door shoe 23 is detached from the groove 25 of the sill 21. There is nothing, and it is possible to prevent an unreasonable and unreasonable escape by the user, and also in this respect, safety can be further improved. On the other hand, when the elevator is properly landed (while entering the door zone), the solenoid 33 is energized and the plunger 31 is retracted, that is, withdraws from the through hole 27 by the electromagnetic force generated by the coil 35. The door 1 can be automatically opened and closed.

  As described above, according to the present embodiment, the existing elevator is substantially unfavorable with respect to the two directions of the door opening / closing direction and the front-rear direction due to the simple configuration of providing the through hole and the solenoid. Door operation can be regulated. That is, in the present embodiment, it is possible to simultaneously suppress the position of the door in two directions by the movement of the device in one direction, that is, the sliding of the plunger, that is, in the left-right direction applied to the door with a simple device configuration. Thus, it is possible to increase the proof stress against the load and the load in the front-rear direction at the same time, and to provide a safer elevator.

Embodiment 2. FIG.
Next, the elevator door lock device according to the second embodiment will be described with reference to FIG. FIG. 4 is a diagram of the same mode as FIG. 2 regarding the second embodiment. As can be seen from FIG. 4, the second embodiment is different from the first embodiment in that the plunger 31 extends in a direction inclined with respect to the horizontal direction. More specifically, the solenoid 33 is provided on the landing side of the sill 21, the plunger 31 is inserted into the through hole 27 from the landing side, and the plunger 31 is positioned so as to be located at the upper end (the car from the landing side). Inclined with respect to the horizontal direction (facing up indoors).

  According to the second embodiment, the same advantages as those of the first embodiment can be obtained, and the load resistance until the door shoe is detached from the car sill is further improved. This is because if a load is applied to the door from the inside of the car toward the landing side, the door may bend and the door shoe may be tilted. is there.

Embodiment 3 FIG.
Next, an elevator door lock device according to Embodiment 3 will be described with reference to FIG. FIG. 5: is a figure which shows the structure relevant to a car door and a lock | rock from the boarding / alighting direction regarding this Embodiment 3, and has shown the fully closed state. The third embodiment is directed to a mode in which a pair of left and right door panels 3 and 3 of a double door type is used as a car door. A through hole 27 is formed on the end face on the side to be abutted in AF. The pair of left and right through holes 27 extend in the door opening / closing direction.

  Also, one of the pair of left and right door panels 3 and 3 is provided with a plunger 31 that can enter and exit both the pair of left and right through holes 27 when the door is fully closed, and penetrates both of the through holes 27 when entering. Yes. The plunger 31 is one of the components of the solenoid 33, and extends in a direction inclined with respect to the horizontal direction, as shown in FIG.

  According to the third embodiment, the above-described advantage similar to that of the first embodiment can be obtained by the plunger 31 and the through hole 27 being caught against the undesirable door movement at the time of locking. Since it is mounted on the device, there is an advantage that the access of the device is good and the adjustment is simplified. In addition, there is an advantage that it can be realized at a low cost because it requires less processing time in that it does not need to be built in the sill.

Embodiment 4 FIG.
Next, the elevator door lock device according to the fourth embodiment will be described based on FIG. The fourth embodiment is intended for a mode in which at least one door panel 3 of a single opening type is used as a car door, and one door panel in the third embodiment is a single opening door panel 3. The other door panel 3 in the third embodiment is replaced with a door-to-door pillar 41 that abuts against an end of the door panel 3 when the door is fully closed. Therefore, advantages similar to those of the third embodiment described above are obtained.

Embodiment 5 FIG.
Furthermore, the elevator door lock device according to the fifth embodiment will be described with reference to FIGS. 6 and 7. FIG. 6: is a figure which shows the structure relevant to a car door and a lock | rock from the boarding / alighting direction regarding this Embodiment 5, and has shown the fully closed state. FIG. 7 is a diagram showing a configuration seen from the line VII in FIG.

  In the case where the car door is composed of a plurality of double-open door panels that open and close the doorway, the alternate long and short dash line C in FIG. However, if it is the aspect which consists of at least 1 door panel of the single opening type which opens and closes an entrance, it is a site | part corresponded to the end surface of a door-to-door pillar.

  A well-known sill block 51 is provided in the groove 25 of the sill 21 that accommodates the door shoe 23. The sill block 51 is disposed in front of the door shoe 23 in the door closing direction when the door is fully closed.

  In addition, the corresponding door panel 3 is provided with a plunger 31 that can enter and leave the groove 25 from its lower surface. The plunging position of the plunger 31 is arranged in the forward direction in the door closing direction of the sill block 51 when the door is fully closed. That is, after the plunger 31 enters the groove 25 in the door fully closed state, if the door panel 3 is further moved in the door opening direction in that state, the plunger 31 is in contact with the sill block 51. I can say that.

  According to the fifth embodiment as described above, the above-described advantage similar to that of the first embodiment is obtained by the plunger and the sill block being caught against the undesirable movement of the door at the time of locking.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  For example, each of the above-described embodiments has been described as a mode of locking the car door, but the present invention is not limited to this, and the car door is replaced with a landing door for each of the above-described embodiments. It is also possible to implement.

  1 car door, 3 pair of left and right door panels, 21 sill, 23 door shoe, 25 groove, 27 through hole, 31 plunger, 33 solenoid, 41 door-to-door pillar, 51 sill block.

Claims (4)

In the door lock device for an elevator provided with a plurality of double-open door panels that open and close the doorway,
Each of the plurality of door panels has a through hole penetrating in the opening and closing direction,
One of the plurality of door panels is provided with a plunger that can enter and exit both of the through holes and penetrates both of the through holes when entering.
The plunger extends in a direction inclined with respect to a horizontal direction so as to restrict the movement of the door panel by being caught by the plunger and the through hole at the time of the entry.
An elevator door lock device. In a door lock device for an elevator comprising at least one door panel of a single opening type that opens and closes an entrance and exit, and a door-to-door pillar that abuts against an end of the door panel when the door is fully closed,
Each of the door panel and the door column has a through hole penetrating in the opening and closing direction,
One of the door panel and the door stopper column is provided with a plunger that can enter and exit both of the through holes and penetrates both of the through holes when entering.
The plunger extends in a direction inclined with respect to a horizontal direction so as to restrict the movement of the door panel by being caught by the plunger and the through hole at the time of the entry.
An elevator door lock device. A door that opens and closes the doorway;
A door shoe provided at the bottom of the door;
In the door lock device for an elevator comprising a groove for accommodating the door shoe and a threshold for guiding the door in the opening and closing direction,
In the groove, a sill block is provided,
The door is provided with a plunger capable of entering and exiting the groove from the lower surface of the door,
When the door is fully closed, when the plunger enters the groove and the door is about to be opened, the plunger and the sill block are brought into contact with each other to lock the opening operation of the door.
An elevator door lock device. The plunger is provided in a solenoid and enters a rush state when the solenoid coil is demagnetized, and enters a retracted state when the coil is excited.
The elevator door lock device according to any one of claims 1 to 3 .

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