JP2003312968A - Locking device of cage side door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device capable of locking even during power failure when the cage is in a landing position, being applied to either case of single sliding door or double sliding door, and requiring no locking cam on each floor. <P>SOLUTION: The device consists of a cage side door 1a, an operating body 11, an unlocking cam 27, a first stopper means 20 and a second stopper means 21. The cage side door 1a opens and closes the entrance of the cage A stopping at the opposite position of landing. The operating body 11 is installed on the cage A, locks when the cage side door 1a is at all closed positions, displaced along with the movement of the cage side door 1a in an opening direction and carried out locking operation. The unlocking cam 27 is fixedly provided at the landing, engages with the operating body 11 when the cage side door opens, and displaces the operating body 11 toward the unlocking direction. The first stopper means 20 is provided at the cage side door 1a, displaces the operating body 11 to a locking state when the cage side door 1a moves to the all closed position and maintains the locking state. The second stopper means 21 is provided at the cage A and maintains the unlocking state of the operating body 11 when the operating body 11 is displaced to the unlocking state. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a car side door of an elevator.

[0002]

2. Description of the Related Art Generally, in an elevator, a lock device is also provided on the car side door in order to prevent the car side door from being opened while the car is running.

As a typical example thereof, as disclosed in Japanese Unexamined Patent Publication No. 8-59153, a hook portion provided on a suspending metal hanging on a car and the suspending metal are movable. There is a lock device for a car side door of an elevator, which is provided on a supporting rail frame and includes an engaging body that is engageable with the hook portion and an electromagnetic coil that drives the engaging body.

Another example is Japanese Patent Laid-Open No. 2-193.
As shown in Japanese Patent No. 883, a car that moves up and down a hoistway and stops facing a landing, a sliding door that opens and closes the entrance and exit of the car, and a lock provided to the car that operates by displacement of an operating member to lock the sliding door. And a lock device for unlocking and provided in the hoistway corresponding to the landing, and when the car approaches the landing, engages with the actuating body to displace the actuating body in the unlocking corresponding position displacement. And an unlocking cam that is provided in the hoistway so that the car is separated from the landing and the actuating body is located at a position where the actuating body is disengaged from the unlocking cam. There is an elevator car side door locking device with a locking cam that is displaced in the locking direction.

[0005]

In the former prior art described above, since the unlocking operation is performed by the electromagnetic coil, in the unlikely event of a power failure, the car is stopped at the proper landing position. There was a problem that the door on the car side could not be unlocked, and the trapping continued during the power outage. In the latter conventional technique, the problem of the former conventional technique does not occur, but it can be applied only to a single door, and there is a problem that it is necessary to provide a locking cam at each floor position, which is expensive. .

The object of the present invention is that, when a car is in the landing position, it can be unlocked even when there is a power failure, and it can be applied to both single-opening and double-opening. In addition, a car-side door that does not require a locking cam on each floor. To provide a locking device.

[0007]

[Means for Solving the Problems] The above object is to provide a car-side door that opens and closes an entrance / exit of a car that stops at a landing facing position,
It is provided on the car, locks when the car stops at the landing facing position, and the car side door is in the fully closed position, and
When the actuating body that moves and unlocks with the movement of the car side door in the opening direction and the car side door stops at the landing facing position,
It is fixedly provided in the hall so as to correspond to the operating body,
When the car side door is opened, it engages with the actuating body,
An unlocking cam for displacing the actuating body in the unlocking direction is provided on the car side door, and when the car side door is moved to the fully closed position, engages with the actuating body to move the actuating body. First stopper means for displacing to a locked state and maintaining the locked state, and a second stopper provided on the car for maintaining the unlocked state of the operating body when the operating body is displaced to the unlocked state And the stopper means.

According to this construction, when there is a car at the landing position, the electromagnetic coil is not used, so that it can be unlocked even in the event of a power failure, and can be applied to both single-opening and double-opening.
Since the locking is performed by the first stopper means provided on the door, the locking cam on each floor is not required.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a lock device for a car door of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall front view of a car side door equipped with a car side door locking device according to an embodiment of the present invention, and FIG.
1 is an enlarged perspective view of part A of FIG. 1, FIG. 3 is a perspective view of a floor side door corresponding to the car side door of FIG. 2, and FIGS. 4 to 6 are front views illustrating an unlocking operation of the locking device. 4 is a front view showing a state where the car side door is fully closed, FIG. 5 is a state where the car side door is slightly open, and FIG. 6 is a front view showing a state where the car side door is further opened.

1 to 3, A is a car, and the car A is provided with car side doors 1a and 1b. A hanger roller 3a is provided above the car side doors 1a and 2b.
Car door hangers 2a, 2b with ~ 3b are provided. A rail frame 4 is provided with a rail 5, a motor 6, pulleys 7a and 7b, and a belt 8 on the rail frame 4. 9a and 9b have door hangers 2a and 2 at one end
It is a belt grip bracket whose other end is fixed to the belt 8 at b. 10 is an engaging device that engages with a landing lock device provided on a floor side door (not shown), 11 is an operating body,
The operating body 11 is supported by a first lever 12 supported to rotate counterclockwise and a lower end of the first lever 12 supported to rotate counterclockwise. The second lever 14 is provided with a hook 13 that engages with a door lock 16 provided on the second lever 14, and a door lock roller 15 provided on the second lever 14. Reference numeral 17 is a torsion spring that applies a counterclockwise rotational force to the first lever 12, and 18 is a torsion spring that imparts a counterclockwise rotational force to the second lever 14. Reference numeral 19 is a base fixed to the rail frame 4, and the first lever 12 is rotatably attached to the base 19. Reference numeral 20 denotes a first stopper means provided on the car door hanger 2a. The first stopper means 20 engages with the first lever 12 when the car door 1a is in the fully closed position, The hook 13 functions to maintain the locked state. Reference numeral 21 is a second stopper means provided on the base 19, and the second stopper means 21 engages with the first lever 12 when the car side door 1a is opened to a certain position so that the actuating body 11 is released. Keep unlocked. 22a is a floor side door, and this floor side door 2
A floor door hanger 24a provided with a hanger roller 23a is provided above the 2a. 25 is a floor-side rail frame, and when the floor-side door rail 26 and the car-side door 2a are opened in the floor-side rail frame 25,
An unlocking cam 27 that engages with the door lock roller 15 and displaces the operating body 11 to the unlocked state is provided.

Next, the operation of shifting the operating body 11 from the locked state to the unlocked state will be described with reference to FIGS.

As shown in FIG. 4, when the car side door 2a is fully closed, the hook 13 is locked by the door lock 16.
And the car side door 2a is in a locked state. Therefore, the car side door 2a cannot be released even if the car side door 2a is released at a position other than the proper landing position. When the vehicle arrives at the regular landing position, the unlocking cam 26 and the corresponding positional relationship are established. When the motor 6 is driven at this position and the pulley 7b is rotated to move the belt 8, the grip brackets 9a, 9b, the car door hangers 2a, 2
The car side doors 1a and 1b move in the opening direction via b. Along with this movement, the first stopper means 20 also moves, so that the first lever 12 and the second lever 14 rotate counterclockwise by the action of the torsion spring 17 as shown in FIG. The roller 15 hits the unlocking cam 27. After that, when the car side door 1a further moves to the release side, the door lock roller 15 becomes the fixed position, so that the action of the torsion spring 17 causes the first lever 1 to move.
At the joint between the second lever 14 and the second lever 14, the hook 13 is bent in an inverted V shape, and the hook 13 starts rotating clockwise. The rotation of the first lever 12 continues until the first lever 12 comes into contact with the second stopper means 21. FIG. 6 shows the state in which the first lever 12 is in contact with the second stopper means 21, and the hook 13 is completely released from the engagement with the door lock 16, that is, in the unlocked state. The doors 2a and 2b can be moved in the opening direction.

The locking is reversed, and the car side door 2a is moved in the closing direction, so that the first stopper means 20 as shown in FIG.
When hitting the first lever 12 and further moving in the closing direction, the doglegged state of the first lever 12 and the second lever 14 is eliminated, and the state becomes as shown in FIGS. 5 to 4, and the hook 13 becomes the door lock 16. The engaged state is reached and the locking is completed.

As described above, when the car A is stopped at the landing facing position and the car side door 2a is in the fully closed position, the car A is locked and the car side door 2a is moved in the opening direction. When the actuating body 11 that is displaced and unlocked together with the car-side door 2a is stopped at the landing facing position, the actuating body 1 is operated.
1 is fixedly provided in the landing so as to correspond to 1, and engages with the operating body 11 when the car side door 2a opens.
Unlocking cam 27 for displacing this actuation body 11 in the unlocking direction
And is provided on the car side door 2a, and when the car side door 2a moves to the fully closed position, engages with the actuation body 11 to displace the actuation body 11 to the locked state and to release the locked state. It comprises first stopper means 20 for maintaining and second stopper means 21 provided on the car A for maintaining the unlocked state of the operating body 11 when the operating body 11 is displaced to the unlocked state. Therefore, when the car A lands on the regular stop position, the car side doors 1a and 1b can be opened regardless of the power failure. Also, it can be applied regardless of whether it is double-opening or single-opening. Further, since the locked state is maintained by the first stopper means 20, it is not necessary to provide a means for locking on each floor.

[0016]

As described above, in the car side door locking device of the present invention, when the car is landed at the regular stop position, the car side door can be opened regardless of a power failure, and Applicable regardless of whether it is double-open or single-open. Further, the mechanism can be simplified because it is not necessary to provide means for locking each floor.

[Brief description of drawings]

FIG. 1 is an overall front view of a car side door equipped with a car side door locking device according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a portion A of FIG.

FIG. 3 is a perspective view of a floor-side door corresponding to the car-side door of FIG.

FIG. 4 is a front view showing a state of the operating body in a state where the car side door is fully closed.

FIG. 5 is a front view showing a state of the operating body in a state where the car side door is slightly opened.

FIG. 6 is a front view showing a state where the car side door is further opened and the operating body is unlocked.

[Explanation of symbols]

A basket 1a, 1b Car side door 11 Actuator 12 First lever 14 Second lever 15 Door Lock Roller 17, 18 Towtion spring 20 First stopper means 21 Second stopper means 27 unlocking cam

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takeshi Fukuya             1070 Ichimo, Hitachinaka City, Ibaraki Prefecture Stock Association             Hitachi Systems Building Systems Group (72) Inventor Mitsuru Sakai             1070 Ichimo, Hitachinaka City, Ibaraki Prefecture Stock Association             Hitachi Systems Building Systems Group (72) Inventor Shinsuke Ishizuka             2 days at 832 Horiguchi, Hitachinaka City, Ibaraki Prefecture             Tachimito Engineering Co., Ltd. (72) Inventor Makoto Tarui             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System (72) Inventor Tsuneo Handa             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System F-term (reference) 3F307 AA02 BA02 CC01 CC04 CC12

Claims (3)

[Claims] 1. A car-side door that opens and closes an entrance / exit of a car that stops at a landing-facing position, and a lock provided when the car stops at the landing-facing position and the car-side door is at a fully closed position. In addition, when the car side door is stopped and unlocked by the movement of the car side door in the opening direction, and when the car side door stops at the landing facing position, it is fixedly provided in the hall so as to correspond to the actuation body. And an unlocking cam that engages with the actuating body when the car side door is opened and displaces the actuating body in the unlocking direction, and the car side door is fully closed. When it moves to the position, it engages with the actuation body, displaces the actuation body to the locked state, and first stopper means for maintaining the locked state, and the cage provided with the actuation body to unlock the actuation body. When the actuator is in the unlocked state, A locking device for a car-side door, characterized in that it comprises a second stopper means for maintaining the same. 2. A first lever that supports the operating body so as to rotate in a counterclockwise direction and engages with the first and second stopper means, and a counterclockwise direction at a lower end of the first lever. A second lever, which is supported so as to rotate with respect to the car door and has a hook that engages with a door lock provided on the car door, and a door lock that is provided on the second lever and engages with the unlocking cam. The car door door locking device according to claim 1, wherein the car door locking device comprises a roller. 3. The locking device for a car door according to claim 1, wherein the rotational force applied to the first and second levers is applied by a torsion spring.