KR20070065300A - Elevator car door locking apparatus - Google Patents

Abstract

This invention provides a car door locking apparatus which is capable of retaining a lock element in a locked position in case of a power failure with a car positioned outside a landing zone, and which takes car inclination and installation into account and is independent of a door drive. This invention is equipped with a cam which, when the car is outside the landing zone, moves together with a bracket into engagement with a guide surface, thereby generating a drive force for moving a latch from a locked position to an unlocked position, and an actuator which, during car travel, moves the cam to a retracted position not in engagement with the guide surface. The shape of the cam is constructed such that the drive force is generated during cam motion by a prescribed quantity and that the drive force is maintained during cam motion beyond the prescribed quantity.

Description

Door lock of car of elevator {ELEVATOR CAR DOOR LOCKING APPARATUS}

In normal operation, the door of an elevator is generally opened automatically by a door drive arranged on the elevator car. For example, if a car stops between floors due to a power outage, the passenger manually opens the door of the car. Therefore, a car door locking apparatus is required to prevent such manual opening. The present invention does not rely on door drives, and also takes into account some possible car inclinations due to eccentric car loading, thus allowing the elevator car to lock the door outside the landing zone. Relates to a door lock.

There are many car door locks that are operated by the movement of a door drive device or door coupling mechanism. The door locks of these cars have the drawback that they cannot be applied to existing door drive devices or door coupling mechanisms unless a change is made. In addition, since a plurality of functions are combined in one mechanism, installation tolerance becomes more severe.

For example, the specification of British Patent No. 22O6331 describes a door lock of a car which does not depend on a door drive device or a door coupling mechanism.

This conventional first car door lock device is composed of lever mechanisms 8 and 10, an electric actuator 13, and a stop guide surface 12 in a hoistway, as shown in FIG. Create three possible locking member positions.

Then, when the actuator 13 pulls up the lever 9, the locking member 5 rotates clockwise around the pivot point A to the first locking position where the latch fits into the pin 4. . As a result, the opening operation of the doors 1 and 2 is prevented. In addition, when the actuator 13 is not actuated, the lever 9 moves downward by gravity, and the locking member 5 moves the latch 6 to the pin 3 counterclockwise around the pivot point A. Rotate to the second locking position to fit. As a result, the opening operation of the doors 1 and 2 is prevented. Moreover, when the guide surface 12 exists, the said roller 11 contacts this guide surface 12, and the locking member 5 latches 6 by the link connection lever mechanism of the levers 8 and 10. , 7) is held in the unlocked position away from pins 3 and 4 (1). Thereby, the opening operation | movement of the doors 1 and 2 becomes possible.

For example, US Pat. No. 4934488 describes the same door lock of a car.

As shown in Fig. 15, the door locking device of the conventional second car comprises a lever mechanism 17, an electric actuator 18, and a stop guide surface 19 in a hoistway. Create three possible door lock positions.

The locking member 16 having a roller 17a and having a linked linking lever 17b has the upper protrusion 16c restricted from the guide surface 19 by the electric actuator 18. It rotates to the 1st locking position C which regulates the movement of (15). When the actuator 18 is not operated, the locking member 16 rotates to the second locking position B in which the lower protrusion 16d regulates the movement of the regulating member 15. Then, when the roller 17a contacts the guide surface 19, the locking member 16 rotates from the second locking position B to the unlocking position A. FIG. And the control at the time of movement of a car makes the actuator 18 energized from the start of movement of a car to just before the predetermined | prescribed indicated floor, and deactivates the actuator 18 just before the indicated floor. It is in a state.

In the conventional door lock device of the first car, when the car is out of power in a state other than the landing area, the locking member 5 rotates from the first lock position to the second lock position via the unlock position. do. Therefore, when the doors 1 and 2 are opened between floors during a power failure, there is always a short time for the locking member 5 to be unlocked before reaching the second locking position.

In the conventional door lock device of the second car, when the car is out of power in a state other than the landing area, the locking member 16 is moved from the first locking position C via the unlocking position A. Rotate to the second locking position (B). Therefore, when the door is opened between floors during a power failure, there is always a short time for the locking member 16 to be unlocked before reaching the second locking position B. FIG.

The inclination of the car occurs due to the eccentric car load and the ever-present gap, or the flexibility of the guide of the car. In the case of a door lock of a car using a mechanism on a car including a roller capable of contacting the guide face in the hoistway, the inclination of the car in the direction toward the guide face directly affects the amount of movement of the roller. . In addition, guide face mounting tolerances directly affect the amount of roller movement that is possible. In the above-mentioned conventional first and second car locking devices, another rotation occurs in the locking member as a result of the inclination of the car and the installation tolerance. Therefore, there is a possibility that the rotation of the locking member varies, which is related to the floor and the actual car load. This raises the level of possible lock failures.

The object of the present invention is to configure the locking member to take two states, the locking position and the unlocking position, so that even if the car is out of power in a state other than the landing area, the locking member can maintain the locked position and at the same time It is to obtain the door lock of the cage | car which does not depend on the door drive apparatus which considered the inclination and installation of a cage | basket | car.

The door lock device of an elevator car which locks the sliding door of the car when the car of the elevator is not in the landing area, comprising: a guide face mounted in the hoistway at each landing position; It is provided with the locking mechanism part attached to the said cage | basket | car. And, the locking mechanism portion, and the support is mounted to the car in a fixed state; A locking member mounted to the support to move between a locking position positioned within the door's movement path and regulating the opening operation of the door, and a unlocking position located outside the movement path of the door to enable the opening operation of the door; ; The locking member is mounted to the support member so as to be movable in a direction folded with respect to the guide surface, and the moving car is in a retracted position that is separated from the guide surface. In the locked position, and at the time of conception of the car, it is in an operating position to engage with the guide surface, and moves in a direction opposite from the guide surface to move the locking member from the locked position to the unlocked position. It has an operating part to move on. Moreover, when the said operating part is in the said operating position, and moved a predetermined amount in the direction which goes away from the said guide surface, when the movement to the said unlocking position of the said lock member is complete, and it moved beyond this predetermined amount, the said And the unlocking position of the locking member is maintained.

In the present invention, the locking member takes the locked position during operation of the car and takes the unlocked position at the time of conception. Therefore, even if a power failure occurs during operation of the car, the locked position is maintained. Moreover, when the operation part moves over the predetermined amount, it is comprised so that the unlocking position of a locking member may be maintained. Therefore, by setting the predetermined amount to the amount of movement of the operating part in the case where the inclination and the installation tolerance of the car are the worst, the inclination and the installation tolerance of the car have no influence on the unlocking position of the locking member.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which looked at the door lock apparatus of the cage | basket | car door of the elevator which concerns on one Embodiment of this invention.

Figure 2 is a perspective view of the car door lock device of the elevator according to an embodiment of the present invention from the car side.

3 is a side view showing a state in a locked position in a landing area in a door lock device of an elevator car of an embodiment of the present invention.

4 is a view for explaining an operating state of an actuator in a landing area in a door lock device of an elevator car of an embodiment according to the present invention.

FIG. 5 is a view for explaining a non-operational state of an actuator in a landing area in a door lock of an elevator car according to an embodiment of the present invention. FIG.

FIG. 6 is a view for explaining an operating state of a cam in a landing area in a door lock device of an elevator car of an embodiment of the present invention. FIG.

FIG. 7 is a view for explaining an inoperative state of the actuator other than the landing area in the door lock device of the elevator car of the embodiment according to the present invention. FIG.

The front view which shows the unlocked state in the landing area in the door lock of the cage | basket | car of the elevator which concerns on one Embodiment of this invention.

Fig. 9 is a side view of the unlocking state in the landing area in the door lock device of the car door of an elevator according to an embodiment of the present invention, as viewed from the bracket side;

The rear view which shows the unlocked state in the landing area in the door lock of the cage | basket | car of the elevator which concerns on one Embodiment of this invention.

The side view which looked at the unlocking state in the boarding point area | region in the door lock device of the cage | basket | car of the elevator which concerns on one Embodiment of this invention from the support plate side.

12 is an enlarged side view around a cam illustrating a locking state in a landing area in a door locking device of an elevator car of an embodiment according to the present invention.

Fig. 13 is an enlarged side view around the cam for explaining the unlocking state in the landing area of the door lock device of the car of the elevator according to the embodiment of the present invention.

It is a block diagram which shows typically an example of the door lock of the cage | basket | car of the conventional elevator.

It is a block diagram which shows typically the other example of the door lock of the cage | basket | car of the conventional elevator.

Hereinafter, the basic concept and operation of the present invention will be described using one embodiment with reference to the drawings.

1 and 2 show an embodiment of the door lock device of the car of the elevator of the present invention from two different viewpoints. The door lock device 22 of the car includes a locking mechanism portion 23 attached to the car and a guide face 24 mounted in the hoistway at each landing position. In the present embodiment, the locking mechanism 23 is disposed below the car sill 20 of the car, but the present invention is not limited only to this position. In addition, the guide surface 24 is mounted in the hoistway at each landing in the stationary state. And, except when the locking mechanism 23 is in a position facing the guide face 24 and the electronically actuated actuator 38 of the locking mechanism 23 does not operate, that is, does not feed. The door locking device 22 prevents the sliding door 21 from opening.

Next, the detail of the locking mechanism part 23 is demonstrated, referring FIG.

The support body 27 is provided with 27 A of long support arms, and the support plate 27B integrally formed in the other end side of the support arm 27A. This support arm 27A extends the upper end to the upper side of the threshold 20 of the cage | basket | car, and also hangs the lower end to the lower side of the threshold 20 of the cage | basket | car, and is attached to the car frame (not shown). It is mounted in the stopped state. The support plate 27B extends on one side of the support arm 27A with the surface direction perpendicular thereto.

The latch 25 as the locking member is rotatably mounted on the upper end of the support arm 27A about the hinge point 26. And in the horizontal position shown (lock position), the latch 25 is located in the movement path of the door 21, and the door 21 cannot be opened. In addition, in the maximum rotation position (unlocked position), the latch 25 can be positioned outside the movement path of the door 21 to open the door 21. Moreover, it is comprised so that the center of mass of the latch 25 may always be located between the door 21 and the hinge point 26 of a cage | basket | car.

Moreover, the groove hole 30 which makes a hole direction perpendicular is provided with the support arm 27A adjoining the support plate 27B, and making a hole. Then, the shaft member 29 is guided to the groove hole 30 so that the movement in the vertical direction is freely mounted.

The wire or rod 28 is connected to the latch 25 at one end in an eccentric state from the hinge point 26, and the other end is connected to the shaft member 29. Then, when the shaft member 29 is guided to the groove hole 30 and moved downward, the wire or rod 28 is pulled downward. As a result, the latch 25 is rotated counterclockwise around the hinge point 26 shown in FIG. 3 to move outside the movement path of the door 21, thereby releasing the lock of the door 21. In addition to this example, other vertical guides that replace the shaft member 29 in the groove hole 30 can also be applied.

The bracket 37 is attached to the support body 27 so as to be movable in the horizontal direction. In the example shown, the guide rail 36 is attached to the support plate 27B with the longitudinal direction horizontal. Three rollers 35 are attached to the bracket 37 so as to be rotatable about the horizontal axis. Then, the two rollers 35 span the guide rails 36 from above, and the remaining one roller 35 faces the guide rails 36 from below, and the bracket 37 is mounted to the support plate 27B. . Thereby, the bracket 37 can move to the direction which fold | folds with respect to the guide surface 24. As shown in FIG. In addition, although the horizontal guide is composed of a guide rail 36 mounted on the support plate 27B and three rollers 35 mounted on the bracket 37, other guide systems may be applied in the same manner instead. .

The cam 32 is mounted to the bracket 37 and moves with it. As described later, the cam 32 has an inclined portion 32a that is lowered in the direction of the guide surface 24, and the shaft member 29 is in contact with the inclined portion 32a. Therefore, when the cam 32 moves away from the guide surface 24 with the movement of the bracket 37, the shaft member 29 moves downward as a result. As a result of this downward movement of the shaft member 29, a tension is applied to the wire or rod 28.

Next, the drive mechanism of the bracket 37 is demonstrated.

An electronically actuated actuator 38 is mounted to the bracket 37. The lever 33 is fixed to the drive shaft 38a of the actuator 38. In addition, the roller 31 is rotatably attached to the free end of the lever 33.

This actuator 38 can rotate the lever 33 over a certain angle from the horizontal position at the time of operation. As a result of the rotation of the lever 33, a constant gap occurs between the roller 31 and the guide surface 24. By this gap, the roller 31 and the guide surface 24 do not contact at all while the car is moving. When the actuator 38 does not operate, i.e., does not feed, the return spring (not shown) holds the lever 33 securely back to the horizontal position. In that case, if the guide surface 24 exists, there will be some overlap in the position of the guide surface 24 and the roller 31. As shown in FIG. Therefore, when the car is not in the landing area, the lever 33 linking the roller 31 can freely rotate to the horizontal position. The bracket 37 stays at the default position. However, when the car is in the landing area, the roller 31 contacts the guide face 24 before the lever 33 reaches the horizontal position. Therefore, the lever 33 can continue to rotate to the horizontal position only when the bracket 37 moves away from the guide face 24.

A spring 39 is provided between the bracket 37 and the support plate 27B so as to press the bracket 37 in the direction of the guide surface 24. Thereby, after the actuator 38 rotates the lever 33 with the roller 31 away from the guide surface 24, the bracket 37 can be reliably returned to the standard setting position.

The rubber stopper 34 is attached to the bracket 37 by determining the standard setting position of the bracket 37. And when the bracket 37 moves so that it may become close to the guide surface 24 by the pressing force of the spring 39, the stopper 34 will contact the support plate 27B, and the movement of the bracket 37 will be prevented. By this, the bracket 37 is maintained at the standard setting position.

Here, the operating part of the locking mechanism part 23 is comprised by the rope or rod 28, the shaft member 29, the roller 31, the cam 32, the bracket 37, the actuator 38, etc.

Subsequently, the operation of the actuator 38 will be described with reference to FIGS. 4 to 7.

4 shows the operating state of the actuator 38. When the actuator 38 is actuated, the lever 33 is rotated away from the guide face 24 together with the linked roller 31. As a result of the rotation of this lever 33, the roller 31 is located in the retracted position with a gap with respect to the guide face 24. Therefore, the noise and vibration which arise when the roller 31 comes into contact with the guide surface 24 when passing through the boarding point during the movement of a car are prevented.

5 shows a state in which the car 38 is in the landing area and the actuator 38 is not operating. The lever 33 is caused to rotate to the horizontal position by gravity and return spring force. However, since the guide face 24 exists, the roller 31 comes into contact with the guide face 24 before the lever 33 reaches the horizontal position. And as shown in FIG. 6, when the lever 33 continues to rotate until it reaches a horizontal position, reaction force will generate | occur | produce with respect to the roller 31 from the guide surface 24. As shown in FIG. This reaction force is transmitted to the bracket 37 and moves the bracket 37 away from the guide face 24. It is necessary that the force for moving the bracket 37 away from the guide face 24 is smaller than the force for rotating the lever 33 to the horizontal position. In this way, the cam 32 linked to the bracket 37 is located at an operating position where the roller 31 engages with the guide face 24 and moves away from the guide face 24 together with the bracket 37. do. The door 21 is unlocked.

FIG. 7 shows a case where the actuator 38 does not operate when the car is not in the landing area. In this case, the roller 31 does not contact the guide surface 24, and the lever 33 can freely rotate to the horizontal position. Therefore, since no reaction force from the guide surface 24 occurs, the bracket 37 is not pressurized to move, so it stays at the standard setting position. The door 21 remains locked.

8 to 11 show an example of the locking device 22 in which the car is in the landing zone and in the unlocked position. In this case, the actuator 38 is not operating. Thus, the lever 33 is rotated with the linked roller 31 to the horizontal position so that a reaction force is generated from the guide surface 24 to the roller 31, so that the bracket 37 is linked with the cam 32 linked thereto. Move away from the guide face 24. The bracket 37 is guided in the horizontal direction by the support 27 (support plate 27b). At this time, the spring 39 disposed between the bracket 37 and the support 27 is compressed by the movement of the bracket 37. The force of the spring 39 is large enough to return the bracket 37 to the standard setting position as soon as the roller 31 does not contact the guide face 24. The force of the spring 39 is less than the force for keeping the lever 33 in the horizontal position, and therefore at least less than the force of the return spring of the actuator 38. By the movement of the cam 32 away from the guide surface 24, the shaft member 29 is guided to the groove hole 30 and pushed out. By this displacement of the shaft member 29, the wire or rod 28 is pulled down and the latch 25 rotates about the hinge point 26. Thereby, the latch 25 rotates other than the movement path of the door 21, and the door 21 is not locked. That is, when the car is in the landing area, the latch 25 is held in the unlocked position so that the door 21 can be opened.

In addition, instead of the slotted hole 30, other vertical guide systems may be applied.

The rotation of the latch 25 has two extreme positions, namely, a rotation angle (locking position) for locking the door 21 and B) a rotation angle (unlocking position) for unlocking the door 21. The maximum rotation angle for unlocking the door 21 must be limited for several reasons. The first reason is that when the angle at which the latch 25 rotates is too large, the amount that the latch 25 protrudes from the threshold of the car is too large. This may interfere with the parts of the door device of the landing. The second reason is that the center of mass of the latch 25 is always hinged with the door 21 of the car in order to ensure that the latch 25 is always locked by gravity in case the wire or rod 28 is broken. It should be located between the point (26). In order to limit the maximum angle of rotation of the latch 25, the movement of the shaft member 29 must also be limited. The movement of the shaft member 29 is also determined by the shape of the cam 32.

Therefore, the relationship between the cam 32 and the shaft member 29 is shown in more detail based on FIG. 12 and FIG.

The cam 32 consists of an inclined portion 32a and a horizontal portion 32b. As shown in FIG. 12 and FIG. 13, the lower surface of the inclined portion 32a is formed on the inclined surface that is lowered in the direction of the guide surface 24. Moreover, the lower surface of the horizontal part 32b is formed in the horizontal surface extended horizontally in the direction of the guide surface 24 from the lower end of the lower surface of the inclined part 32a. And when the shaft member 29 is in contact with the inclined part 32a, the inclined part 29 is guided to the groove hole 30 by the movement of the cam 32, and changes the height position, It slides on the lower surface of 32a. At this time, a driving force is generated to move the latch 25 from the locked position to the unlocked position. In addition, when the shaft member 29 is in contact with the horizontal portion 32b, the shaft member 29 moves on the lower surface of the horizontal portion 32b without changing the height position due to the movement of the cam 32. Go sliding. At this time, the driving force for moving the latch 25 from the locked position to the unlocked position is maintained.

This shape is selected because the movement of the bracket 37 varies within a certain range determined by the inclination of the car and the installation tolerance. The inclination and installation tolerance of the car directly affect the overlapping distance between the roller 31 and the guide face 24, ie the possible displacement amount of the bracket 37 for leveling the lever 33. While the shaft member 29 is in contact with the lower surface of the inclined portion 32a of the cam 32, the latch 25 rotates to a predetermined maximum rotation angle. The shape of the cam 32 is designed such that the length and angle of the lower surface of the inclined portion 32a are sufficient to rotate the latch 25 to the maximum rotation angle in a state where the inclination and installation tolerance of the car are the worst case. do. In that case, the cam 32 moves the shortest distance (predetermined amount). On the other hand, the cam 32 travels a longer distance in all states other than knitting when the inclination and installation tolerance of the car are the worst. During this continuous movement of the cam 32, the shaft member 29 travels along the lower surface of the horizontal portion 32b of the cam 32, whereby the latch 25 is held at the maximum rotational position.

In FIG. 12, the cam 32 is still in the standard setting position. The shaft member 29 is in an upper position and is in contact with the lower surface of the inclined portion 32a of the cam 32. The wire or rod 28 is not tensioned so that the latch 25 is still in the locked position. In FIG. 13, the cam 32 moves so that the cam 32 may move away from the guide surface 24 by the shortest distance (a predetermined amount) due to the knitting of the worst case of the car and the installation tolerance. Thus, the shaft member 29 moves downward along the lower surface of the inclined portion 32a of the cam 32 until the lower surface of the horizontal portion 32b of the cam 32 is reached, and the latch 25 Complete the movement to the maximum rotation position. And the cam 32 moves so that it may move further from the guide surface 24 in all states other than the knitting where the inclination and installation tolerance of this car are the worst. During the movement beyond the shortest distance of the cam 32, the shaft member 29 travels along the lower surface of the horizontal portion 32b of the cam 32. However, the wire or rod 28 does not go down any further, so the latch 25 remains in the maximum rotational position.

In addition, although the shaft member 29 slides the lower surface of the inclined part 32a and the horizontal part 32b of the cam 32 directly, the roller member is attached to the shaft member 29, and the shaft member 29 is carried out. May move along the lower surfaces of the inclined portion 32a and the horizontal portion 32b of the cam 32 while rotating the roller. In this case, the frictional force and contact wear when the shaft member 29 moves in conjunction with the movement of the cam 32 can be reduced.

In the locking device 22 configured as described above, the actuator 38 is in an excited state from the start of movement of the car to just before landing on the floor in which the predetermined instruction is made, and the actuator 38 is in an unexcited state just before the landing. Therefore, during the movement of the car, as shown in FIG. 4, a gap is formed between the roller 31 and the guide surface 24, and the noise caused by the contact between the roller 31 and the guide surface 24 is reduced. Generation of vibrations is prevented. At this time, the latch 25 is held in the locked position to prevent the opening operation of the door 21. When the car is placed, the cam 32 moves away from the guide surface 24 together with the bracket 37 as shown in FIG. 6, and the latch 25 moves from the locked position to the locked release position. . Thus, the opening and closing operation of the door 21 is performed. In addition, if a power failure occurs when the car is outside the landing compartment, the lever 33 rotates to a horizontal position as shown in FIG. 7. At this time, since the guide surface 24 does not exist, the cam 32 does not move away from the guide surface 24 with the bracket 37, and the latch 25 is held in the unlocked position. . Therefore, manually opening the door 21 at the time of power failure is prevented.

In addition, since the locking device 22 does not depend on the door driving device, it can be applied to an existing elevator without changing the existing door driving device or the door coupling mechanism.

The cam 32 is composed of an inclined portion 32a and a horizontal portion 32b. And when the inclination and installation tolerance of a car are the worst, when the cam 32 is moved with the bracket 37 and the latch 25 was rotated from the locked position to the unlocked position (maximum rotation position), The length and angle of the lower surface of the inclined portion 32a are set so that the shaft member 29 is located at the lower end of the lower surface of the inclined portion 32a. Therefore, even if the inclination and installation tolerance of a car are the worst, the latch 25 can be rotated to the maximum rotation position. In addition, the maximum amount of movement of the cam 32 in all cases other than the knitting when the inclination and the installation allowance of the car is the worst is the cam 32 when the inclination and the installation allowance of the car are the worst. Is greater than the maximum amount of movement. However, the maximum amount of movement of the cam 32 causes the shaft member 29 to move from the inclined portion 32a to the horizontal portion 32b and then to move along the horizontal portion 32b, so that the latch 25 The maximum rotational position of is maintained. Therefore, since the maximum rotational position of the latch 25 is not affected by the inclination of the car and the installation tolerance, the latch 25 excessively protrudes from the threshold of the car to cushion the parts of the door device of the landing. Is prevented.

Moreover, it is designed so that the center of mass of the latch 25 may always be located between the door 21 and the hinge point 26 of a car. Therefore, even when the wire or rod 28 is broken, the latch 25 is always rotated to the locked position by gravity to ensure the locked state. Moreover, you may add the spring which presses the latch 25 to the direction which moves from a unlocking position to a lock position.

The locking device thus configured can assemble the entire locking device 22 at the factory except for the guide face 24. It can be easily installed in a car by connecting several bolts in the posture standing in the pit at the site. The guide surface 24 can be mounted on each platform by a guide surface bracket provided with a slot for adjustment. These brackets can be installed in advance in the support frame of the door of the landing at the factory. The position of the guide surface 24 in the boarding point of the lowest floor can be adjusted to the posture in a pit at the site. The position of this guide surface 24 is used as a reference of the position of the guide surface 24 of another boarding point, for example by using a piano wire. The accuracy of the position of the guide surface 24 in the moving direction of the door is not very high because the width of the guide surface 24 is sufficient.

Therefore, the advantages achievable by the present invention are as follows.

Does not depend on door drive,

It does not depend on the height of the car,

It does not depend on the kind of the door panel,

Even in the case of power failure or when the car is inclined, an appropriate locking function can be obtained.

Easy to install on site

Claims (7)

In the door lock device of the elevator car which locks the sliding door of the car when the car of the elevator is not in the landing area, A guide face mounted in the hoistway at each hoist position; A locking mechanism unit mounted to the car, The locking mechanism portion, A support mounted in the car in a fixed state; A locking member mounted to the support to move between a locking position positioned within the door's movement path and regulating the opening operation of the door, and a unlocking position located outside the movement path of the door to enable the opening operation of the door; , Mounted on the support so as to be movable in a direction foldable with respect to the guide surface, the moving of the car is in a retracted position away from the guide surface, and the locking member is in a locked position. Holding, and when the car is placed in an operating position to engage with the guide surface, moving in a direction opposite from the guide surface to move the locking member from the locking position to the unlocking position. Has wealth, The said operating part is in the said operating position, when the movement to the said lock release position of the said lock member is complete when it moves a predetermined amount from the said guide surface to the opposite direction, When the movement exceeds this predetermined amount, the said locking And the door unlocking device of the elevator, characterized in that the unlocking position of the member is maintained. The method of claim 1, The actuating part includes a bracket mounted to the support member so as to be movable in a direction foldable with respect to the guide face, and installed on the bracket to contact the guide face to move the bracket away from the guide face. The door lock of the elevator car of the elevator characterized by having a roller. The method of claim 2, And said operating portion has an electronically actuated actuator for moving said roller from said operating position to said retracted position in an excited state. The method of claim 2, The actuating portion is mounted to the bracket so as to be in contact with the component and the component mechanically coupled to the locking member, and moves together with the bracket when the car is implanted, and the locking member is released from the locking position. Has a cam that creates a driving force in this part to move it into position, The cam is formed in a shape in which the driving force is generated in this part during the movement of the predetermined amount of the cam, and the cam is formed in a shape that maintains the driving force during movement of the cam exceeding the predetermined amount. Door lock. The method of claim 4, wherein The lock member is a door lock device for an elevator car, characterized in that coupled to the part by a wire. The method of claim 4, wherein The lock member is a door lock device for an elevator car, characterized in that coupled to the part by a rod. The method of claim 4, wherein The cam has an inclined portion and a horizontal portion, When the cam moves the predetermined amount, the component travels along the inclined portion to generate the driving force, whereby the locking member advances from the locking position to the unlocking position, after which the cam When moving over a predetermined amount, the part advances along a horizontal portion and maintains this driving force, thereby holding a locking member in the unlocked position.

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