CN211776615U - Elevator car door opening and closing device and elevator - Google Patents

Abstract

The utility model relates to a car door switch device and elevator of elevator. An elevator car door opening and closing device is provided with: a door knife mechanism (1) which is mounted on a car door machine and is provided with a door closing side movable door knife arm (11) and a door opening side movable door knife arm (12) which are arranged in parallel along the vertical direction in sequence in the opening direction of the car door; a link (2) which is attached to the car door motor via an intermediate point (20) so as to be rotatable about the intermediate point, and both ends of which are connected to a door-closing side movable door knife arm and a door-opening side movable door knife arm, respectively; a landing door lock ball (3) which is fixed to a landing, is located between the door-closing side movable door knife arm and the door-opening side movable door knife arm when the car stops at the landing, and can apply a rotational force to the link by abutting against the door-closing side movable door knife arm or the door-opening side movable door knife arm; and a lock mechanism (4) that is brought into a locked state in which the opening of the car door is restricted or an unlocked state in which the opening of the car door is permitted, in conjunction with the rotation of the link.

Description

Elevator car door opening and closing device and elevator

Technical Field

The utility model relates to a car door switching device of elevator and possess this car door switching device's elevator.

Background

The elevator device is provided with a car door opening and closing device for controlling the opening and closing of a car door, the car door opening and closing device is provided with a locking mechanism, when the elevator is normally used and stops at a landing, the locking mechanism is automatically unlocked to open the car door so that passengers can get on and off the elevator, and the locking mechanism is locked to limit the opening of the car door in the process of ascending and descending the elevator along a hoistway so as to prevent the car door from being opened during operation and prevent the accident of falling down the elevator.

Generally, a car door opening and closing device includes a vane mechanism to open and close a car door. In a conventional elevator, a vane mechanism is composed of three vane arms, namely a fixed vane outer arm, a movable vane inner arm, and a movable vane outer arm, which are sequentially arranged in a door opening direction, and a landing door lock ball drives the movable vane inner arm to lock and unlock a locking mechanism. When the elevator breaks down and needs to open the door at the landing door, the movement track of the door knife roller needs to be changed through a spring device, and other auxiliary components such as a stop block are also needed to unlock the locking mechanism when the landing door opens the door.

In the above conventional elevator, the vane mechanism is composed of three vane arms, and therefore, connecting rods for connecting these three vane arms need to be correspondingly provided, and the number of components is large, which results in a large overall weight of the structure, a complex structure, and inconvenience in operations such as installation and adjustment.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem, the present invention provides a car door opening/closing device for an elevator, having a car door motor that provides a driving force for opening and closing a car door and a member on a car door side on which the car door opening/closing device is mounted, and characterized in that: a door knife mechanism mounted on the car door machine, and having a door closing side movable door knife arm and a door opening side movable door knife arm which are arranged in parallel along the vertical direction in sequence from the door opening direction of the car door; a link rod which is attached to a car door machine via an intermediate point so as to be rotatable about the intermediate point, and both ends of which are connected to the door-closing side movable door knife arm and the door-opening side movable door knife arm, respectively; a landing door lock ball fixed to a landing, located between the door-closing side movable door knife arm and the door-opening side movable door knife arm when the car stops at the landing, and capable of applying a rotational force to the link by abutting against the door-closing side movable door knife arm or the door-opening side movable door knife arm; and a lock mechanism that is brought into a locked state in which the opening of the car door is restricted or an unlocked state in which the opening of the car door is permitted in conjunction with the rotation of the link, and that is set to the locked state in a normal operation state in which the car is ascending and descending and an abnormal stop state in which the car is stopped in a zone other than a landing, and that is set to the unlocked state in a state in which the car is stopped at the landing.

The car door opening and closing device of an elevator, wherein the link includes: a first link arm which is connected to the door closing side movable door knife arm in a rotatable manner; and a second link arm which is rotatably connected to the movable door closer arm, wherein the first link arm and the second link arm form an inverted V shape.

The car door opening and closing device of an elevator, wherein the locking mechanism includes: a lock hook attached to a car door motor via a rotating shaft, and rotatable to a falling position at which the lock mechanism is locked and a lifting position at which the lock mechanism is unlocked; a first unlocking wheel mounted on the door closing side movable door knife arm; and a second unlocking wheel mounted on the door-opening-side movable door knife arm; the first unlocking wheel or the second unlocking wheel abuts against the lock hook to set the lock hook to a raised position.

The car door opening and closing device for an elevator described above is characterized in that when the car is normally running and stopped at a landing and automatically opens a door, or when the car is abnormally stopped at a landing and a door is opened from the inside of a car door, the first unlocking wheel abuts against the lock hook to set the lock hook to a raised position, and when the car is abnormally stopped at a landing and a door is opened from the landing side, the second unlocking wheel abuts against the lock hook to set the lock hook to a raised position.

The car door opening and closing device for an elevator described above is characterized in that, when the car is normally operated and stopped at a landing or the door is automatically opened, or, when the car stops at a landing due to an abnormality and the door is opened from the inside of the car door, the landing door lock ball abuts against the movable door knife arm on the closing side, the link lever is rotated counterclockwise, the door closing side movable door vane arm is moved upward and rightward, the first unlocking wheel attached to the door closing side movable door vane arm abuts against the latch hook to set the latch hook to the lifted position, when the elevator car is stopped at a landing due to an abnormality and the door is taken off from the landing side, the landing door lock ball abuts against the movable door knife arm on the door opening side, the link lever is rotated clockwise, the door opening side movable door vane arm moves upward and leftward, and the first unlocking wheel attached to the door opening side movable door vane arm abuts against the latch hook to set the latch hook to the lifted position.

The car door opening and closing device of an elevator described above is characterized in that the lock hook has a first opposing portion that opposes the first unlocking sheave when in the lowered position and a second opposing portion that opposes the second unlocking sheave when in the lowered position, a portion of the lock hook on the door closing side with respect to the first opposing portion is formed as a first protruding portion that protrudes from the periphery, a portion of the lock hook on the upper side with respect to the second opposing portion is formed as a second protruding portion that protrudes from the periphery, and the lifting force is applied to the lock hook by the first protruding portion coming into contact with the first unlocking sheave or by the second protruding portion coming into contact with the second unlocking sheave.

The car door opening and closing device of an elevator described above is characterized in that both side surfaces of the lock hook that sandwich the first protruding portion and both side surfaces that sandwich the second protruding portion are formed in an arc shape, respectively, as guide surfaces that guide rotation of the lock hook.

The car door opening and closing device of an elevator is characterized in that the first unlocking wheel and the second unlocking wheel are rotatably provided.

The car door opening and closing device of an elevator described above, wherein the locking mechanism further includes: and a stopper member mounted to the car door machine, for placing the lower surface of the latch hook when the latch hook is at the falling position, and for defining the falling lowest position of the latch hook.

The car door opening and closing device of an elevator described above, wherein the locking mechanism further includes a lock state detection switch, and the lock state detection switch includes: a movable end mounted at the front end of the latch hook and moving together with the latch hook; and a fixed end fixed to a car door machine and disposed at a position facing a front end of the latch hook at a falling position, wherein when the latch hook moves to the falling position, the movable end is electrically connected to the fixed end, and the locked state detection switch detects an electric signal indicating that the locking mechanism is in a locked state.

The car door opening and closing device of an elevator described above further includes a locked state holding mechanism that holds a relative positional relationship between the door-closing side movable door vane arm and the door-opening side movable door vane arm in a locked state of the locking mechanism, and the locked state holding mechanism includes: a stopper fixed to the door-opening-side movable door knife arm; and a spring member mounted to the car door motor; the spring member abuts against the stopper when the lock mechanism is in the locked state, and is separated from the stopper when the lock mechanism is in the unlocked state.

The car door opening and closing device of an elevator according to the above, further comprising: a door vane roller rotatably mounted to the door closing side movable door vane arm; and a guide plate fixed to the car door machine and having a horizontal portion and an inclined portion inclined downward from the horizontal portion toward the door closing direction, wherein the guide plate guides the vane roller so that the vane roller rolls on the guide plate during opening and closing of the car door.

In the car door opening and closing device for an elevator, a wire rope is connected to a lower end of the door opening side movable door vane arm as a manual unlocking mechanism when the car is abnormal and stops in a non-landing area.

The present embodiment also relates to an elevator including the car door opening/closing device described above.

In the car door opening and closing device of the present invention, the vane mechanism is constituted only by two vane arms, namely, the movable vane arm and the door opening side movable vane arm, and the link is given a rotational force by the action of the landing door lock ball, so that the locking mechanism is locked or unlocked in conjunction with the rotation of the link. Therefore, the utility model discloses can realize locking and the unblock of car door effectively through simple structure, compare in current elevator, the quantity of door sword arm reduces, and the connecting rod that correspondingly connects the door sword arm also reduces, and from this, the part number reduces, and the whole weight of structure becomes light, and the structure is simplified, and operations such as installation adjustment become simple.

Drawings

Fig. 1 is a diagram showing an overall configuration of a car door opening and closing device for an elevator according to the present invention, and is a diagram in which a landing door lock ball is omitted.

Fig. 2 is a diagram showing a locked state of a lock mechanism of a car door opening and closing device of an elevator according to the present invention.

Fig. 3 is a diagram showing an unlocked state of a locking mechanism of a car door opening and closing device of an elevator according to the present invention.

Fig. 4 is a diagram showing a locked state holding mechanism of a car door opening and closing device of an elevator according to the present invention, in which a spring member is not compressed.

Fig. 5 is a diagram showing a locked state holding mechanism of a car door opening and closing device of an elevator according to the present invention, in which a spring member is compressed.

Fig. 6 is a diagram showing a lock state detection switch of the car door opening and closing device of the elevator of the present invention.

Fig. 7A, 7B, 7C, and 7D are diagrams showing the procedure of unlocking the locking mechanism when the elevator is in normal operation, stops at a landing and opens the door automatically, and when the elevator fails and stops at a landing and the door is opened from the car, and sequentially show that the locking mechanism is not unlocked, the locking mechanism starts unlocking, the locking mechanism is unlocked in the middle of the unlocking, and the locking mechanism is unlocked.

Fig. 8A, 8B, 8C, and 8D are diagrams of a process of unlocking the locking mechanism when the elevator is in a failure, stops at a landing, and lifts the door from the landing door, and sequentially show that the locking mechanism is not unlocked, the locking mechanism starts unlocking, the locking mechanism is unlocked in the middle, and the locking mechanism is unlocked.

Fig. 9 is a diagram showing a state in which the elevator of the present invention is parked outside the landing area (outside the unlocking area).

Reference numerals:

1. a door vane mechanism; 11. a door closing side movable door knife arm; 12. a movable door knife arm at the door opening side;

2. a connecting rod; 20. a middle point; 21. a first link arm; 22. a second link arm;

3. landing door lock balls;

4. a locking mechanism; 40. a latch hook; 41. a first unlocking wheel; 411. a first protrusion; 42. a second unlocking wheel; 412. a second protrusion; 43. a stop member;

44. a lock state detection switch; 441. a movable end; 442. a fixed end;

5. a locked state maintaining mechanism; 51. a stopper; 52. a spring member;

6. a door vane roller;

7. a guide plate;

8. a steel cord.

Detailed Description

Next, a car door opening/closing device for an elevator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an overall configuration diagram of a car door opening/closing device for an elevator according to an embodiment of the present invention. Fig. 2 is a diagram showing a locked state of a lock mechanism of a car door opening and closing device of an elevator according to the present invention. Fig. 3 is a diagram showing an unlocked state of a locking mechanism of a car door opening and closing device of an elevator according to the present invention. In fig. 1 to 3, the left side indicates the door opening direction in which the car door is opened, and the right side indicates the door closing direction in which the car door is closed.

As shown in fig. 1, the car door opening and closing device of an elevator mainly includes a vane mechanism 1, a link 2, a landing door lock ball 3, and a lock mechanism 4. Although not shown, the elevator includes a car door motor that provides a driving force for opening and closing the car door and to which a car door opening and closing device is attached.

First, the structure of the car door opening and closing device of the present invention will be described in brief.

As shown in fig. 1, in the car door opening and closing device of the present invention, the door vane mechanism 1 is attached to the car door base plate, and includes a door closing side movable door vane arm 11 (the right door vane arm in fig. 1) and a door opening side movable door vane arm 12 (the left door vane arm in fig. 1) provided in parallel in the vertical direction in order from the door opening direction of the car door.

In the car door opening and closing device of the present invention, the link 2 includes the first link arm 21, the second link arm 22, and the intermediate point 20 located between the first link arm 21 and the second link arm 22, the intermediate point 20 is rotatably attached to the car door base plate, and the ends of the first link arm 21 and the second link arm 22 are rotatably connected to the door closing side movable door knife arm 11 and the door opening side movable door knife arm 12, respectively. In addition, the first link arm (21) and the second link arm (22) form an inverted V shape, for example.

In the car door opening and closing device of the present invention, the landing door lock ball 3 is fixed to the landing, does not move together with the car, is located between the door-closing side movable door vane arm 11 and the door-opening side movable door vane arm 12 only when the car stops at the landing, and can apply a turning force to the link 2 by abutting the landing door lock ball 3 against the door-closing side movable door vane arm 11 or the door-opening side movable door vane arm 12.

In the car door opening and closing device of the present invention, the lock mechanism 4 is locked or unlocked in conjunction with the rotation of the link 2, and the lock mechanism 4 is locked to restrict the opening of the car door in a normal operation state in which the car is ascending and descending and in an abnormal stop state in which the car is stopped in a region other than the landing, and can be unlocked to permit the opening of the car door in a state in which the car is stopped at the landing.

Further, the car door opening and closing device of the present invention further includes a locked state retaining mechanism 5 for retaining a relative positional relationship between the door-closing side movable door vane arm 11 and the door-opening side movable door vane arm 12 in the locked state of the locking mechanism, and the locked state retaining mechanism includes: a stopper 51 fixed to the door opening side movable door knife arm 12; and a spring member 52 fixed to a mounting plate on which the car door is provided; when the lock mechanism 4 is in the locked state, the spring member 52 abuts against the stopper 51 (fig. 2), and when the lock mechanism 4 is in the unlocked state, the spring member 52 is separated from the stopper 51 (fig. 3).

Furthermore, the utility model discloses a car door switch device still possesses: a door vane roller 6 rotatably attached to the door closing side movable door vane arm 11; and a guide plate 7 fixed to the car door machine and having a horizontal portion and an inclined portion inclined downward from the horizontal portion toward the door closing direction, wherein the guide plate 7 guides the vane roller 4 so as to roll on the guide plate during opening and closing of the car door.

Next, the structure of the lock mechanism 4 will be specifically described.

As shown in fig. 1 to 3, the lock mechanism 4 includes: a latch hook 40 attached to the car door via a pivot shaft and pivotable to a falling position (state of fig. 2) at which the latch mechanism is locked and a rising position (state of fig. 3) at which the latch mechanism is unlocked; and a first unlocking wheel 41 mounted on the door closing side movable door knife arm 11; the second unlocking wheel 42 is attached to the door opening-side movable door vane arm 12. The first unlocking wheel 41 and the unlocking wheel 42 are rotatably provided.

In the lock mechanism 4, the lock hook 40 has a first opposing portion that opposes the first unlocking wheel 41 when in the lowered position and a second opposing portion that opposes the second unlocking wheel 42 when in the lowered position, a portion of the lock hook 40 on the door side of the first opposing portion is formed as a first protruding portion 411 that protrudes from the periphery, a portion of the lock hook 40 on the upper side of the second opposing portion is formed as a second protruding portion 412 that protrudes from the periphery, and the first protruding portion 411 abuts against the first unlocking wheel 41 or the second protruding portion 412 abuts against the second unlocking wheel 42 to apply a lifting force to the lock hook 40.

Further, in the lock mechanism 4, both side surfaces of the lock hook 40 sandwiching the first protruding portion 411 and both side surfaces of the lock hook 412 sandwiching the second protruding portion 412 are formed in an arc shape, respectively, as guide surfaces that guide the rotation of the lock hook 40.

The lock mechanism 4 further includes: and a stopper member 43 attached to the car door machine, on which a lower surface of the hook 40 is placed when the hook 40 is at the falling position, and defining the falling lowest position of the hook 40.

As shown in fig. 6, the lock mechanism 4 further includes a lock state detection switch 44, and the lock state detection switch includes: a movable end 441 mounted to a front end of the locking hook 40 and moving together with the locking hook 40; and a fixed end 442 fixed to the car door motor and disposed at a position facing the front end of the hook 40 at the falling position, wherein when the hook 40 moves to the falling position, the movable end 441 is electrically connected to the fixed end 442, and the lock state detection switch detects an electric signal indicating that the lock mechanism 4 is in the locked state.

In the car door opening and closing device of the present invention thus constituted, when the car is normally operated and stopped at a landing and automatically opens the door, or when the car is abnormally stopped at a landing and the door is lifted from the inside of the car door, the landing door lock ball 3 abuts against the door closing side movable door vane arm 11, the link 2 rotates counterclockwise, the door closing side movable door vane arm 11 moves upward and rightward, and the first unlocking wheel 41 attached to the door closing side movable door vane arm 11 abuts against the lock hook 40, specifically, the first protrusion 411 to set the lock hook 40 to the lifted position; when the car is stopped at a landing due to an abnormality and the door is lifted from the landing side, the landing door lock ball 3 abuts against the door-opening-side movable door vane arm 12, the link 2 rotates clockwise, the door-opening-side movable door vane arm 12 moves upward and leftward, and the first unlocking sheave 41 attached to the door-opening-side movable door vane arm 12 abuts against the lock hook 40, specifically, the second protrusion 412, and sets the lock hook 40 to the lifted position.

When the elevator is abnormal and does not stop at a landing, the landing door lock ball is not positioned between the two door knife arms, so that no matter the door is taken off from the car or the landing door, the door knife arms cannot be forced, the connecting rod cannot be rotated, and the locking mechanism cannot be unlocked. Therefore, the utility model discloses still possess the manual release mechanism when unusual, take place unusual and not stop the car door and carry out the unblock when the landing at the elevator.

Specifically, as shown in fig. 2, a wire rope 8 is connected to the lower end of the door-opening-side movable door vane arm 12, and when the car stops in a non-landing area due to an abnormality, the landing door lock is first unlocked by a cam key, and after the landing door is manually opened, the lock hook 40 can be lifted by pulling the wire rope 8, and the lock mechanism 4 can be unlocked. Here, an example of the wire rope is shown, but the wire rope is not limited to this, and it is sufficient if a force for lifting the hook can be applied.

Next, the effect that the locking mechanism of the present invention can obtain by having the above configuration will be described.

In the present embodiment, only two movable door closer side door closer arm and two movable door closer arm are provided, the two arms are connected by a V-shaped link, and the link is rotated by power from the landing door lock ball, whereby the lock mechanism is locked or unlocked in conjunction with the rotation of the link. Therefore, the locking and unlocking of the lock mechanism can be realized with a simple configuration, and the opening and closing of the car door can be controlled well.

The utility model discloses a possess such locking state retaining mechanism, when locking mechanism is in the locking state, the spring member butt in dog, if the movable door knife arm of the side of opening the door wants upwards vibration then the spring member is compressed and the reaction force acts on, resist the removal of the movable door knife arm of the side of opening the door, therefore, under the locking state, can utilize the elasticity of spring member to keep closing the door the relative position relation between the movable door knife arm of the side of opening the door and the movable door knife arm of the side of opening the door invariable, consequently, can prevent to lead to closing the door the movable door knife arm of the side of opening the door and the movable door knife arm relative displacement of the side of opening the door because of the vibration, and then the situation that the latch.

The utility model discloses a possess door sword gyro wheel and deflector, at locking and unblock in-process door sword gyro wheel of locking mechanism by the deflector guide and remove, can make the removal of door sword arm more steady to can reduce the locking mechanism and lock and the vibration that produces in the unblock.

The utility model discloses a locking mechanism is through possessing rotatable first unlocking wheel and second unlocking wheel, from this, when the latch hook falls down or by jack-up, the rotation of unlocking wheel can play the effect of buffering the impulsive force to can reduce locking and the vibration that the unblock in-process produced of locking mechanism.

Further, the locking mechanism of the present invention can increase the amount of movement to be lifted up by providing the first projecting portion and the second projecting portion projecting from the periphery, as compared with the case where no projecting portion is provided, and therefore, the locking hook can be reliably lifted up.

Furthermore, the utility model discloses a locking mechanism is through the guide face that forms the arc form to, can suitably guide the motion trail that the latch hook lifted up, and, if set up the arc form more slowly, then can make lifting or falling of latch hook gentle, also can reduce locking of locking mechanism and the vibration that the unblock in-process produced.

Further, the locking mechanism of the present invention is provided with the stopper member, and defines the falling lowest position of the lock hook, so that the locking state of the locking mechanism can be maintained well.

Furthermore, the utility model discloses a locking mechanism detects the signal of telecommunication that shows that locking mechanism is in the state of locking when the latch hook removes to the position that falls through possessing locking state detection switch, can master locking mechanism's locking state reliably, has improved the security effectively.

The above description is directed to an embodiment of the present invention, but not limited thereto. For example, the link may be formed in another shape, for example, a V shape, instead of the inverted V shape, and the other members may be appropriately changed according to the shape of the link as long as the lock mechanism can lock and unlock in conjunction with the rotation of the link.

The lock state detection switch is not limited to the configuration shown in fig. 6, and any configuration may be used as long as it can detect an electric signal indicating that the lock mechanism is in the locked state.

In addition, although the above description has been made of the case where the vane roller and the guide plate are provided, the car door opening and closing device of the present invention can normally open and close the door even if not provided.

Hereinafter, the unlocking and locking processes of the locking mechanism of the car door opening and closing device of an elevator according to an embodiment of the present invention will be described in terms of normal operation and occurrence of an abnormality.

(1) When the lift car normally runs and stops at a landing and opens the door automatically (normally open the door)

Fig. 7A, 7B, 7C, and 7D show a process of unlocking the lock mechanism at the time of normal door opening, where the left side in each drawing is a door opening direction and the right side is a door closing direction.

Fig. 7A is a view corresponding to fig. 2, showing the locking mechanism in the locked state, in which the right-hand chain line indicates the center of the doorway. Fig. 7D shows a state where the lock mechanism is in the unlocked state, and corresponds to fig. 3.

From the state shown in fig. 7A, the lock mechanism starts unlocking. The movable door closer knife arm 11 slightly moves leftward and touches the landing door lock ball 3 by the driving force from the door opening driving motor, the link 2 is rotated counterclockwise by the resistance of the hall door (not shown), the movable door closer knife arm 11 moves upward to the right, the first unlocking roller 41 attached to the movable door closer knife arm 11 lifts the lock hook 40 as the movable door closer knife arm 11 moves upward, the hall door starts to open the door when the link is rotated to the horizontal position, and the door knife roller 6 starts to climb up after contacting the slope of the guide plate 7 when the state shown in fig. 7C is entered through the state shown in fig. 7B, the movable door closer knife arm 11 continues to be clamped to the movable door closer knife arm 12, and the clamped state is maintained to complete the door opening operation, thereby achieving the state shown in fig. 7D.

(2) When the car stops at a landing due to an abnormality and the door is opened from the inside of the car door

The same as in the case of the normal door opening described above.

(3) When the cage normally runs and stops at the landing and automatically closes the door (normally closed)

Normally, the door is closed, which means that the state shown in fig. 7D is restored to the state shown in fig. 7A.

From the state shown in fig. 7D, the locking mechanism starts to be locked.

The door vane roller 6 moves on the guide plate 7 toward the door closing side until it leaves the guide plate 7. The link 2 is returned to the initial position by the gravity of the door-closing side movable door closer arm 11 and the door-opening side movable door closer arm 12, the latch hook 40 is dropped, and the lock mechanism 4 is locked.

(4) When the car is abnormal and stops at the landing and the door is taken off from the landing side

Fig. 8A, 8B, 8C, and 8D show a process of unlocking the lock mechanism when the car stops at a landing due to an abnormality and the door is opened from the landing side, where the left side in each drawing is a door opening direction and the right side is a door closing direction.

Fig. 8A shows a case where the lock mechanism is in a locked state, in which the dot-dash line on the right side indicates the center of the doorway, and fig. 8D shows a case where the lock mechanism is in an unlocked state.

From the state shown in fig. 8A, the lock mechanism starts unlocking. When an operator applies a force in the door opening direction to the landing door from the landing door side, the landing door lock ball 3 slightly moves in the door opening direction and touches the door opening side movable vane arm 12, the link 2 rotates clockwise, and the door opening side movable vane arm 12 moves upward to the left, and at this time, the spring is compressed (the state of fig. 5). As the door opening side movable door closer arm 12 moves upward, the second unlocking wheel 42 attached to the door opening side movable door closer arm 12 lifts the latch hook 40 to start unlocking the latch mechanism, and when the state shown in fig. 8C is entered through the state shown in fig. 8B, the link 2 rotates clockwise to the horizontal position, the link 2 continues to rotate clockwise, until the door closing side movable door closer arm 11 moves downward to the left as shown in fig. 8C, and the door closer roller 6 passes under the guide plate 7.

(5) When the car is not stopped at a landing or in the car

Since the landing door lock ball 3 does not function, there is no power to move the door-closing side movable vane arm 11 and the door-opening side movable vane arm 12 and to rotate the link, and therefore the lock hook is not lifted and the opening of the car door is restricted.

(6) When the door is not parked at the landing and the side of the landing door is opened

Fig. 9 shows the state of the elevator of the invention when it is parked outside the landing zone (outside the unlocking zone). In this case, the locking mechanism is unlocked by the wire rope 8.

As described above, the car door opening and closing device of an elevator according to the present invention can realize opening and closing control of the car door with a simple structure, and compared with the conventional structure, the number of parts is reduced, the entire weight of the structure is reduced, the structure is simplified, and operations such as installation and adjustment are simplified. Further, by providing the car door locking mechanism, the opening of the car door can be appropriately restricted, and it is possible to prevent passengers from being injured or killed by opening the car door from the inside of the car when the car is located at a non-landing, and it is possible to easily open the car door and rescue passengers trapped in the car even if the elevator is abnormal and the door cannot be normally opened.

The elevator according to the present invention has been described above by way of preferred embodiments, but these embodiments are merely exemplary and are not intended to limit the scope of the present invention. The new embodiment can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope described in the claims and the equivalent scope thereof.

Claims (14)

1. A car door opening/closing apparatus for an elevator, having a car door motor that provides a driving force for opening/closing a car door and to which a member on a car door side of the car door opening/closing apparatus is attached, comprising:

a vane mechanism (1) mounted on a car door machine, and having a door closing side movable vane arm (11) and a door opening side movable vane arm (12) provided in parallel in the vertical direction in order from the door opening direction of a car door;

a link (2) which is attached to a car door machine via an intermediate point (20) so as to be rotatable about the intermediate point, and both ends of which are connected to the door-closing side movable door knife arm (11) and the door-opening side movable door knife arm (12), respectively;

a landing door lock ball (3) that is fixed to a landing, is located between the door-closing side movable door vane arm (11) and the door-opening side movable door vane arm (12) when the car stops at the landing, and can apply a turning force to the link (2) by abutting against the door-closing side movable door vane arm (11) or the door-opening side movable door vane arm (12); and

and a lock mechanism (4) which is brought into a locked state in which the opening of the car door is restricted or an unlocked state in which the opening of the car door is permitted in conjunction with the rotation of the link (2), and which is set into the locked state in a normal operation state in which the car is ascending and descending and an abnormal stop state in which the car is stopped in a region other than a landing, and which is set into the unlocked state in a state in which the car is stopped at the landing.

2. The car door opening and closing apparatus of an elevator according to claim 1,

the connecting rod (2) comprises:

a first link arm (21) which is connected to the movable door closer arm (11) in a rotatable manner; and

a second link arm (22) rotatably connected to the movable door closer arm (12),

the first link arm (21) and the second link arm (22) form an inverted V shape.

3. The car door opening and closing apparatus of an elevator according to claim 2,

the lock mechanism (4) includes:

a lock hook (40) that is attached to a car door machine via a rotating shaft and can rotate to a falling position at which the lock mechanism is locked and a lifting position at which the lock mechanism is unlocked;

a first unlocking wheel (41) mounted on the door closing side movable door knife arm (11); and

a second unlocking wheel (42) mounted on the door-opening-side movable door knife arm (12);

the first unlocking wheel (41) or the second unlocking wheel (42) abuts against the lock hook (40) to set the lock hook (40) to a raised position.

4. The car door opening and closing apparatus of an elevator according to claim 3,

when the car normally runs and stops at a landing and automatically opens the door, or when the car is abnormal and stops at the landing and lifts the door from the inner side of the car door, the first unlocking wheel (41) is abutted with the locking hook (40) to set the locking hook (40) to a lifted position,

when the car is stopped at a landing due to an abnormality and a door is opened from the landing side, the second unlocking wheel (42) abuts against the lock hook (40) to set the lock hook (40) to a raised position.

5. The car door opening and closing apparatus of an elevator according to claim 4,

when the car is normally operated and stopped at a landing and automatically opened, or when the car is abnormally stopped at the landing and the door is opened from the inner side of the car door,

the landing door lock ball (3) abuts against the movable door closer arm (11), the link (2) rotates counterclockwise, the movable door closer arm (11) moves upward and rightward, the first unlocking wheel (41) attached to the movable door closer arm (11) abuts against the lock hook (40) to set the lock hook (40) to the raised position,

when the car is stopped at a landing due to an abnormality and the door is taken off from the landing side,

the landing door lock ball (3) abuts against the door-opening-side movable door vane arm (12), the link (2) rotates clockwise, the door-opening-side movable door vane arm (12) moves leftward and upward, and the first unlocking wheel (41) attached to the door-opening-side movable door vane arm (12) abuts against the lock hook (40) to set the lock hook (40) to a raised position.

6. The car door opening and closing apparatus of an elevator according to claim 3,

the locking hook (40) has a first opposing portion that opposes the first unlocking wheel (41) when in the lowered position and a second opposing portion that opposes the second unlocking wheel (42) when in the lowered position,

the lock hook (40) is formed with a first protrusion (411) protruding from the periphery at a position closer to the door closing side than the first opposing position,

the latch hook (40) is formed with a second protrusion (412) protruding from the periphery at a position above the second opposing position,

the first protrusion (411) abuts against the first unlocking wheel (41) or the second protrusion (412) abuts against the second unlocking wheel (42) to apply a lifting force to the lock hook (40).

7. The car door opening and closing apparatus of an elevator according to claim 6,

the two side surfaces of the locking hook (40) that sandwich the first protrusion (411) and the two side surfaces that sandwich the second protrusion (412) are formed in an arc shape, respectively, as guide surfaces that guide the rotation of the locking hook (40).

8. The car door opening and closing apparatus of an elevator according to claim 3,

the first unlocking wheel (41) and the second unlocking wheel (42) are rotatably provided.

9. The car door opening and closing apparatus of an elevator according to claim 3,

the lock mechanism (4) further includes:

and a stopper member (43) attached to the car door machine, on which the lower surface of the latch hook (40) is placed when the latch hook (40) is at the falling position, and which defines the falling lowest position of the latch hook (40).

10. The car door opening and closing apparatus of an elevator according to claim 3,

the lock mechanism (4) further comprises a lock state detection switch (44),

the lock state detection switch includes:

a movable end (441) mounted to the front end of the latch hook (40) and moving together with the latch hook (40); and

a fixed end (442) fixed to the car door machine and disposed at a position opposite to the front end of the latch hook (40) at the falling position,

when the lock hook (40) moves to the falling position, the movable end (441) is electrically connected to the fixed end (442), and the lock state detection switch detects an electric signal indicating that the lock mechanism (4) is in the locked state.

11. The car door opening and closing apparatus of an elevator according to claim 1,

the car door opening and closing device further comprises a locking state maintaining mechanism (5) for maintaining the relative position relationship between the door closing side movable door knife arm (11) and the door opening side movable door knife arm (12) in the locking state of the locking mechanism,

the locked state maintaining mechanism includes:

a stopper (51) fixed to the door-opening-side movable door knife arm (12); and

a spring member (52) attached to the car door;

when the locking mechanism (4) is in a locked state, the spring member (52) abuts against the stopper (51),

when the lock mechanism (4) is in an unlocked state, the spring member (52) is separated from the stopper (51).

12. The car door opening and closing apparatus of an elevator according to claim 1,

the car door opening and closing device further includes:

a door vane roller (6) rotatably mounted on the door closing side movable door vane arm (11);

a guide plate (7) fixed to the car door machine and having a horizontal portion and an inclined portion inclined downward from the horizontal portion toward the door closing direction,

the guide plate (7) guides the vane roller (6) so that the vane roller rolls on the guide plate during opening and closing of the car door.

13. The car door opening and closing apparatus of an elevator according to claim 1,

a wire rope (8) is connected to the lower end of the door-opening side movable door knife arm (12) as a manual unlocking mechanism when the car is abnormal and stops at a non-landing area.

14. An elevator is characterized in that the elevator is provided with a lifting device,

the car door opening/closing apparatus according to any one of claims 1 to 13 is provided.

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