JP2008303003A - Locking device for car side door of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device for car side door of elevator capable of reducing the number of components and the cost by locking a car side door by the operation of a door engaging device interlocked with the opening operation of the car side door. <P>SOLUTION: When a car side door 5 is opened in a state in which a car is located between landing floors, a lock pin 17 provided on a movable vane 15 and a lock member 19 provided on a hanger case 4 move the movable vane 15 to the locking position in a catch relationship in the door opening direction to prevent the opening operation of the car side door 5. On the other hand, when the car side door is opened in a state in which the car is landed on each landing, the movement of the movable vane 15 to the locking position is prevented by the abutting on a fixed roller 30 provided on a landing side door 22 to permit the opening operation of the car side door. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a car-side door locking device for an elevator, and in particular, when the car is landing on each landing, the door-opening operation of the car-side door is permitted, while the car-side door is locked when the car is positioned between the landings. The present invention relates to a car-side door locking device for an elevator that prevents a door opening operation.

  The elevator car side door is connected to the landing side door via a door engaging device that operates in conjunction with the door opening operation when the car side door is opened while the car is landing on each landing. Engage and open and close with the landing side door.

  Specifically, as described in Patent Document 1, for example, a pair of vane members that are connected to each other by a pair of link members and constitute a so-called parallel link mechanism together with the two link members are provided on the car-side door, A roller that enters between the vane members when the car reaches each landing is provided on the landing side door, and the two vane members are held apart from each other when the car side door is fully closed. While avoiding the interference between the vane members and the rollers when passing through each landing, when the car doors are opened with the car landing on each landing, When the two vane members approach each other in conjunction with the door opening operation, the car side door and the landing side door are engaged with the two vane members sandwiching the roller. There.

  In such an elevator, if the power supply to the elevator is interrupted due to, for example, a power failure while the car is running, the car may stop in a state where it is located between the landings. If a passenger in the car opens the car side door in such a state, the passenger may accidentally fall from the car, so when the car side door is located between the landings, For example, Patent Document 2 discloses a car-side door locking device that prevents a door opening operation.

  The car-side door locking device described in Patent Document 2 forms a locked portion on the car-side door, while a so-called latch-like locking member that is hooked on the locked portion can be rotated to the car housing side. When the car-side door is opened with the car positioned between the landings, the cam member provided on the car-side door causes the locking member to be hooked from the locked portion. The car-side door is locked by rotating from the retracted position retracted so as not to be locked to the locked position.

On the other hand, a restriction plate that restricts the rotation of the locking member toward the locking position is provided at a position corresponding to each landing in the hoistway, and the car-side door is opened with the car landing on the landing. In this case, the rotation of the locking member to the locking position is prevented by contact with the restriction plate, and the opening operation of the car side door is allowed.
Japanese Patent Laid-Open No. 2006-290656 Japanese Patent Laid-Open No. 10-45360

  However, in the technique described in Patent Document 2, since the car-side door locking device described above is installed independently of the door engaging device, the number of parts increases, which is disadvantageous in cost. In addition, when the car-side door is opened while the car is landing on each landing, the locking member is prevented from rotating to the locking position by contacting with the restriction plate provided in the hoistway. Therefore, the locking member operates outside the space where the car-side door is opened and closed, which is not preferable in terms of space saving of the elevator.

  The present invention has been made in view of the above problems, and in particular, by locking the car-side door with the operation of the door engaging device interlocked with the door-opening operation of the car-side door, the number of parts is increased. It is an object of the present invention to provide an elevator car-side door locking device that is preferable in terms of cost reduction and space saving of the elevator.

  According to the first aspect of the present invention, a pair of engaging members arranged in the door opening / closing direction are provided on the car side door, and the driving force applied to the car side door is engaged with both the engaging members. To the landing side door is provided on the landing side door, and both the engaging members are moved toward and away by the parallel link mechanism in conjunction with the door opening / closing operation of the car side door. It is attached to the elevator door engaging device and allows the car-side door to be opened when the car lands on each landing, while the car-side door opens when the car is located between the landings. In the elevator car-side door locking device for preventing operation, one engaging member is provided on one engaging member as the engaging members approach or separate from each other when the car-side door is opened. Against the locking part on the car housing side From the retracted position that is offset in the lifting / lowering direction, the locked part and the locking part move in the car lifting / lowering direction toward the locking position that is hooked in the door opening direction. When the car-side door is opened between the landings, one of the engaging members moves to the locked position, and the car-side door is prevented from opening. When the car-side door is opened in the state of landing on the floor, the movement of one engagement member to the locked position is blocked by the contact with the engaged member, and the car-side door is opened. Is characterized by being allowed.

  Therefore, according to the first aspect of the present invention, when the car stops between the landings due to a power failure or the like, for example, if a passenger in the car tries to open the car side door in this state, the door of the car side door One engagement member moves to the locked position at the initial stage of the opening operation, and prevents further falling of the car in the car from the car by preventing further opening of the car door. It becomes.

  Specifically, as in the second aspect of the invention, the other engagement member of both engagement members is fixed to the car-side door, and the other engagement member and one engagement member are fixed. It is good to comprise a parallel link mechanism by connecting with several link members.

  According to a third aspect of the present invention, a cam member for guiding one engaging member is provided on the car housing side, and the cam member has an inclined surface having a downward slope in the door opening direction. One of the engaging members moves downward along the inclined surface of the cam member when the car-side door is opened, and when the car-side door is opened, The engaging member moves downward toward the locking position by its own weight.

  According to the first aspect of the present invention, since the car side door is locked by the operation of one of the engaging members accompanying the door opening operation of the car side door, the number of parts can be reduced and the cost can be reduced. In addition to being advantageous, it is preferable in terms of space saving of the elevator.

  According to the invention of claim 3, since the one engaging member moves downward toward the locking position by its own weight during the door opening operation of the car side door, the structure of the car side door locking device is It has the advantage of being simplified and more cost effective.

  FIG. 1 is a front view showing a car side doorway opening / closing mechanism of an elevator as a more specific embodiment of the present invention, and shows a fully closed state of a car side doorway.

  As shown in FIG. 1, the elevator car side doorway 1 is a so-called double door double door type, and the car side doorway 1 is opened and closed by left and right car side doors 2 and 3. A hanger case 4 having a hanger rail 5 along the door opening / closing direction is provided above the car-side doorway 1, and the door hangers 2 a and 3 a of the car-side doors 2 and 3 are respectively connected to the hanger rail 5 via hanger rollers (not shown). It is suspended by. The hanger case 4 is fixed to the car housing 6.

  A pair of drive pulleys 7a and 7b are respectively provided at both ends of the door opening / closing direction of the hanger case 4, and a lower part of the endless drive belt 8 wound around the drive pulleys 7a and 7b is provided at the lower part. One door hanger 2a is connected to the upper portion of the other door hanger 3a. Then, by driving the drive belt 8 around the speed reduction belt 10 by the door motor 9, the door hangers 2a and 3a move in the direction approaching or separating from each other, and are attached to the lower edges of the door hangers 2a and 3a, respectively. The car doorway 1 is opened and closed with the door panels 2b and 3b.

  As is well known, the left door hanger 2a in FIG. 1 is provided with a door engagement unit 11 that engages with an interlock unit (described later) provided on the landing side door.

  FIG. 2 is an enlarged view of a portion A in FIG. 1, and FIG. 3 is a perspective view of the door engagement unit 11 alone viewed from the car housing 2 side. FIG. 4 is a perspective view showing a state in which the door engaging unit 11 is removed from the door hanger 2a shown in FIG.

  As shown in FIG. 3 in addition to FIG. 2, the door engaging unit 11 is configured with a base plate 12 fixed to the door hanger 2a as a base, and is connected to each other by a pair of upper and lower link members 13a and 13b. A fixed vane 14 and a movable vane 15 constituting a so-called four-node parallel link mechanism together with the link members 13a and 13b are provided as a pair of engaging members. The fixed vane 14 and the movable vane 15 are arranged side by side in the door opening / closing direction and are formed in a substantially angle shape along the car ascending / descending direction, respectively, and flange-like engaging portions 14a protruding to the landing side, 15a.

  Specifically, pedestal portions 12a and 12b bulging toward the landing side are formed at both ends of the base plate 12 in the car ascending / descending direction. On both pedestal portions 12a and 12b, both ends in the longitudinal direction of the fixed vane 14 are pivotally supported together with one end portions of both link members 13a and 13b, while the other end portions of both link members 13a and 13b are movable vanes. A guide roller 18 is provided at the end of the hanger case 4 side of the connecting shaft between the upper link member 13a and the movable vane 15. A stopper 16 is provided on the base plate 12 side so as to be able to come into contact with the upper link member 13a and hold the link members 13a and 13b in a posture along the horizontal direction by contact with the upper link member 13a. The downward movement of the movable vane 15 is regulated by the stopper 16. In addition, a lock pin 17 that protrudes toward the hanger case 4 is provided as an engaged portion at the upper end of the movable vane 15.

  On the other hand, as shown in FIG. 4 in addition to FIG. 2, a flange portion 4 a extending to the landing side is formed at the upper end of the hanger case 4, and the lower surface of the flange portion 4 a is on the door engagement unit 11 side. A locking member 19 that prevents the car-side door 2 from opening when locked with the locking pin 17 is provided as a locking portion. The lock member 19 has a mounting base (not shown) that overlaps the lower surface of the flange portion 4a, extends downward from the mounting base, and extends from the distal end of the extending portion to the door hanger 2a side. An abutting portion 19b that has an L-shaped intermediate portion 19a and comes into contact with the lock pin 17 extends upward from the tip of the intermediate portion 19a. A predetermined gap G is provided between the contact portion 19 b of the lock member 19 and the flange portion 4 a of the hanger case 4.

  Further, a cam member 20 that guides the movable vane 15 via the guide roller 18 is fixed to the hanger case 4 via a bracket 21, and the cam member 20 has an inclined surface 20 a that is inclined downward in the door opening direction, It has a flat surface 20b that is smoothly continuous with the upper end of the inclined surface 20a and that holds the guide roller 18 when the car side doorway 1 shown in FIG. 2 is fully closed. That is, when the car-side door 1 is fully closed, the guide roller 18 is held on the flat surface 20 b of the cam member 20, and the car-side doors 2 and 3 are opened to move the movable vane 15 from the fixed vane 14. It moves downward along the inclined surface 20b of the cam member 20 while moving in the separating direction. In other words, the movable vane 15 is moved toward and away from the fixed vane 14 by the parallel link mechanism in conjunction with the door opening / closing operation of the car-side doors 2 and 3. Note that a notch 4b is formed in the flange portion 4a of the hanger case 4, and the notch 4b is used to avoid interference between the flange portion 4a of the hanger case 4 and the lock pin 17.

  FIG. 5 is a view of the interlock unit provided on the landing side door of each landing as viewed from the car side. FIG. 5A shows the interlock unit in a state where the landing side door is locked. (B) shows each interlock unit in a state where the landing door is unlocked.

  As shown in FIG. 5A, the interlock unit 23 provided on the landing side door 22 is an intermediate portion in the door opening / closing direction of the latch 25 on the base plate 24 fixed to the landing side door 22. Is supported by a support shaft 26, and a latch portion 25 a formed at the end of the latch 25 on the door closing direction side engages with a stopper 28 on the side of the building housing 27, thereby The side door 22 is locked. A weight 29 is attached to the end of the latch 25 on the door opening direction side, and the latch 25 is urged by its own weight in a direction that strengthens the engagement with the latch 28. As is well known, a lock switch 32 is provided on the building housing 27 side, and the lock state of the landing side door 22 is detected by the lock switch 32.

  A fixed roller 30 is pivotally supported on the base plate 24, and a movable roller 31 is pivotally supported on the latch 25. When the car is landed on each landing, the engaging portions 14a and 15a of both vanes 14 and 15 are both rollers. It enters between 30 and 31. That is, when the car-side entrance 1 is fully closed, the cam member 20 holds the movable vane 15 close to the fixed vane 14 so that the vanes 14 and 15 and the rollers 30 when the car passes through the landings. When the car-side doors 2 and 3 are opened while the car is landing on each landing, the interference with the car 31 is avoided, as shown in FIG. Further, when the movable vane 15 is separated from the fixed vane 14 in conjunction with the door opening operation, both the vanes 14 and 15 are brought into contact with and engaged with the rollers 30 and 31, respectively. When the joint portion 14a presses the movable roller 31 in the door opening direction, the latch 25 is rotated, the engagement between the latch 25 and the latch 28 is released, and the landing side door 22 can be opened. . That is, the door opening / closing driving force of the car side door 2 is transmitted to the landing side door 22 via the door engaging unit 11 and the interlock unit 23.

  FIG. 6 is an explanatory view showing the car-side door locking device when the car-side door is opened while the car is positioned between the landings, and FIG. 7 is a state where the car is landed on each landing. It is explanatory drawing which shows the car side door locking device at the time of making a car side door open-operate.

  In the elevator car side door locking device configured as described above, the guide roller 18 is held on the flat surface 20b of the cam member 20 when the car side doorway 1 is fully closed as shown in FIG. Thus, the movable vane 15 is located at a retreat position where the lock pin 17 is offset upward with respect to the locking portion on the car housing side, and the lock pin 17 is located above the flange portion 4a of the hanger case 4. Yes.

  As shown in FIG. 6, when the car-side doors 2 and 3 are opened with the cars positioned between the landings, the movable vanes 15 are separated from the fixed vanes 14 in the initial stage of the door-opening action. However, the movable vane 15 moves downward until the upper link member 13a and the stopper 16 contact each other, and the contact between the lock pin 17 and the contact portion 19b of the lock member 19 causes that of the car side doors 2 and 3 to move. The above door opening operation is prevented. In other words, when the car-side doors 2 and 3 are opened with the car positioned between the landings, the movable vane is moved to the locked position where the lock pin 17 and the lock member 19 are hooked in the door-opening direction. 15 moves and the door opening operation of the car side doors 2 and 3 is prevented.

  On the other hand, when the car is landed at each landing and the car-side doors 2 and 3 are opened with both vanes 14 and 15 entering between the rollers 20 and 21, as shown in FIG. As the door opens, the movable vane 15 moves from the retracted position toward the locking position, but the movable vane 15 comes into contact with the fixed roller 30 before reaching the locking position. That is, the movement of the movable vane 15 to the locking position is prevented by contact with the fixed roller 30, and the movable vane 15 is held at an intermediate position between the retracted position and the locking position. By passing, the door-opening operation of the car side doors 2 and 3 is allowed.

  Therefore, according to the present embodiment, the car-side doors 2 and 3 are locked by the operation of the movable vane 15 accompanying the door-opening operation of the car-side doors 2 and 3, so the number of parts can be reduced. This is advantageous in terms of cost and is preferable in terms of space saving of the elevator.

  Moreover, since the movable vane 15 is moved downward toward the locking position by its own weight when the car-side doors 2 and 3 are opened, the structure of the car-side door locking device is simplified. There is a merit that is more advantageous in terms of cost.

  In the present embodiment, the present invention is applied to an elevator in which the door opening and closing method is a so-called double door opening type, but it goes without saying that the present invention is applicable regardless of the door opening and closing type. However, it is also possible to apply the present invention to a so-called single-opening type elevator.

  Further, in the present embodiment, when the car reaches the landing, both the vanes 14 and 15 of the door engaging unit 11 enter between the rollers 30 and 31 of the interlock unit 23 and the car-side door 2 , 3, the present invention is applied to a type of door engaging device in which both vanes 14, 15 are separated from each other. However, as described in, for example, Patent Document 1 described above, a car is provided at each landing. The present invention is a door engaging device of a type in which when the landing is made, the roller on the interlock unit side enters between both vanes of the door engaging unit, and both vanes approach each other as the car-side door opens. It is also possible to apply.

It is a figure which shows embodiment of this invention, Comprising: The front view which shows the cage | basket | car doorway opening / closing mechanism of an elevator. The enlarged view of the A section in FIG. The perspective view which shows a door engagement unit alone. The perspective view which shows the state which removed the door engagement unit from the door hanger shown in FIG. It is a figure which shows the interlock unit of a landing side door, Comprising: The figure (a) is a figure which shows the interlock unit of the state which locked the landing side door, The figure (b) is the state of unlocking the landing side door. The figure which shows an interlock unit. Explanatory drawing which shows the car side door locking apparatus in the case of carrying out the door opening operation | movement of the car side door in the state in which a car is located between each landing. Explanatory drawing which shows the cage | basket | car side door locking apparatus in the case of carrying out door opening operation | movement of the cage | basket-side door in the state where the cage | basket | car landed on each landing.

Explanation of symbols

2 ... Car side door 13a ... Link member 13b ... Link member 14 ... Fixed vane (engagement member)
15 ... Movable vane (engagement member)
17 ... Lock pin (locked part)
19: Lock member (locking part)
DESCRIPTION OF SYMBOLS 20 ... Cam member 20a ... Inclined surface 22 ... Landing side door 23 ... Interlock unit (engaged member)

Claims (3)

A pair of engaging members arranged in the door opening / closing direction are provided on the car side door, and engaged with both the engaging members to transmit the driving force applied to the car side door to the landing side door. A joint member is provided on the landing side door, and the engagement member is attached to and separated from the door engagement device of the elevator by a parallel link mechanism in conjunction with the door opening / closing operation of the car side door. The elevator car side door that allows the car side door to open when the car lands on each landing, while preventing the car side door from opening when the car is located between the landings. In the locking device,
As the two engaging members approach or separate from each other during the door opening operation of the car-side door, one engaging member locks the locked portion provided on the one engaging member on the car housing side. From the retracted position that is offset in the car up-and-down direction with respect to the part, the locked part and the locking part move in the car up-and-down direction toward the locked position that is hooked in the door opening direction. ,
When the car-side door is opened between the landings when the car is located between the landings, one of the engaging members moves to the locked position, and the door-opening action of the car-side door is prevented.
When the car-side door is opened with the car landing on each landing, the movement of one engagement member to the locked position is prevented by contact with the engaged member, and the car-side door An elevator car-side door locking device characterized in that the door opening operation of the elevator is allowed.   While fixing the other engagement member among both engagement members to the car side door, and connecting the other engagement member and one engagement member with a plurality of link members, the parallel link mechanism is The elevator car side door locking device according to claim 1, wherein the elevator car side door locking device is configured.   A cam member for guiding one engagement member is provided on the car housing side, and the cam member has an inclined surface having a downward slope in the door opening direction. The elevator car-side door locking device according to claim 1 or 2, wherein the engaging member moves downward along the inclined surface of the cam member.

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