KR100428401B1 - Door coupler and locking device - Google Patents

Abstract

In the present invention, the door coupler 4 comprises a gripping element 14,15 designed to move by the linkage 2 and to hold a corresponding part on the landing door, and a catch 10 with a closed and open position, . The release movement of the catch 10 from the closed position into the open position is permitted when the holding element is pressed against the counterpart.

Description

DOOR COUPLER AND LOCKING DEVICE

In an elevator equipped with an automatic door, the coupling between the car door and the landing door utilizes a door coupler mounted on the card and engaging with a corresponding part mounted on the landing door by a grasping element . The door coupler and its counterpart are fitted against each other such that when the elevator car passes the landing door, the corresponding part on the landing door passes between the gripping elements of the door coupler. When this car is in the landing position and the car door is moving, the door coupler engages the counterpart. In this way, when the car door is moved by the power means connected to the car door, the landing door moves with the car door. Occasionally, the gripping element is a metal vane that protrudes from the door coupler toward the landing door and forms a sort of vertical slot opening towards the landing door. The counterpart is often made up of rollers mounted on the landing door and protruding from the door toward the elevator shaft, the axes of which are mounted in a position perpendicular to the plane of the landing door. There is a locking device for closing the door, in combination with the door coupler or the door itself, so that, without at least a special means, except when the elevator car is adjacent to the landing position, that is to say the elevator car is in a so-called door zone The card door can not be opened except when. The locking system of elevator doors must be reliable and durable. The locking of the elevator door should not cause any disturbing noise.

There are various devices for locking the elevator doors in a reliable and suitable manner for the purpose of elevator doors. For example, a locking system operated by an electromechanical discrete actuator requires that the elevator have a similar system for door operation control to handle locking and unlocking of individual subsystems or doors. A locking system using an electromechanical separate actuator always includes an additional cost corresponding to the value of the actuator.

There is also a mechanical locking system in which an actuating force for locking the door is taken from the movement of the elevator car or the car door. In such a system, the landing zones are indicated and / or the operation of the locks is controlled by means of individual slides or other indicia provided on the elevator shaft at each landing position and immovably fixed relative to the elevator shaft. Mounting these slides or marks on the elevator shaft at each landing location requires a lot of installation time. Long installation time means high labor costs.

Occasionally, the locking device occupies a large space, so that the arrangement of the locking device somewhat influences the design of the door or the door suspension of the elevator car.

The present invention relates to a door coupler as defined in the preamble of claim 1 and a locking device as defined in the preamble of claim 6.

Figures 1 and 2 show a door coupler in which the present invention is applied with a lock system when the elevator car is outside the landing zone,

Figures 3 and 4 show a door coupler in which the invention is applied with a locking system when the elevator car is in the landing zone.

An elevator car which is suitable for use in modern elevator environments and modern elevator technologies and which is low in manufacturing cost, advantageous in terms of space utilization, easy to install, noise-free during operation, and integral with the door coupler A new type of door coupler and a new type of locking system are described as the present invention in order to meet the desire to obtain a simple yet mechanically actuated locking device for the door of a door. The door coupler of the present invention is characterized in that it is described in the characterizing part of claim 1 and the locking device of the present invention is characterized in that it is described in the characterizing part of claim 6. Other embodiments of the invention are characterized by what is described in other claims.

Advantages obtained by the present invention are as follows.

- Locks are inexpensive to manufacture.

- Since it is integrated with the door coupler, the concept of a more simple door can be applied to the locking device. The door coupler is integrated with the locking system to simplify installation.

Since the lock is controlled by the operation of the door coupler, i.e. by the presence or absence of a counterpart attached to the landing door within the reach of the gripping elements of the door coupler, the elevator shaft can be controlled by a separate control device It is not necessary to provide a display.

- The locking device does not take up much space, so it is not difficult to accommodate the locking device even in a narrow structure.

- The locking device is easy to install in combination with the door and is mechanically controlled, so no electrical drive is required.

- The door is locked when outside the landing zone, and this lock is not affected by possible disturbances in the elevator electrical system.

- If the power fails and the elevator stops between the floors, the door can be opened after the elevator has been manually moved to the landing position.

- When the elevator is in operation, or when the car door is locked or unlocked, this device does not generate any additional noise.

- Locking and unlocking of the car door in the elevator follows both the opening and closing of this door both mechanically and in terms of time.

BRIEF DESCRIPTION OF THE DRAWINGS In the following, the invention is explained in detail by way of example with reference to the accompanying drawings.

In the description, parts are described using terms such as left, right, top, bottom, and the like. These terms refer to directions corresponding to the figures, and the terms " clockwise " and " counterclockwise "

A door coupler (4) with a locking device to which the present invention is applied and its operation are described with reference to Figs. Figures 1 and 2 show a situation in which the elevator car is outside the landing zone and the door coupler vanes 14,15 can not face the rollers making up the counterpart on the landing door. Figures 3 and 4 illustrate a situation in which the elevator car is within the landing zone so that when the door is opened, the vanes 14,15 engage the rollers 17,18 on the landing door. The door coupler (4) is mounted on the card suspension plate (1). The card suspension plate 1 is provided with support rollers and usually opposing rollers which move along guide rails or other suitable guide surfaces on the overhead support beams fixed to the elevator car. Thus, the door is supported by the suspension plate and suspended from the overhead support beam.

When the door coupler engages with the landing door, the rollers 17, 18 (shown in FIG. 4) attached to the landing door move between the door coupler vanes 14, 15 and the door coupler vanes 14, Is attached to a linkage system (2) driven by a card drive. Connected to the link device 2 is also a pawl 10 which locks the car door. The catches engage, for example, with a detent fixed to the door, mounted on an overhead beam that supports a door or possibly door panels moving in opposite directions. The car door actuator opens and closes the car door. The car door actuator also opens and closes the landing door coupled to the car door by a door coupler. The door actuator is, for example, a rope driving device which acts in the opening and closing direction of the door and is attached to the door coupler 4. Instead of a rope drive, this door actuator may be some other type of drive means, such as a hydraulic cylinder, which generates a drive force acting in the direction of cardio movement. These doors are substantially moved by door couplers. The rope drive device is connected to the link device 2 by a connection point 3 on the operating lever 5. Due to the rope drive, the actuating lever 5 is moved in the direction of pulling the rope against the pivot 6 fixed to the door coupler 4 (and against the suspension plate 1 supporting the door coupler) It tends to rotate within the range of motion of the operating lever. The operating lever 5 is connected to the suspension plate 1 by means of the pivot 6 to allow rotational movement. The movement of the operating lever 5 relative to the pivot 6 causes appropriate movement of both the pawl 10 and the vanes 14,15 by the link device 2. [ The motion in each case depends on whether or not the elevator is inside the door zone. Information about whether the elevator is inside the door zone is obtained based on the presence of the landing door roller in the gap between the vanes 14,15. Therefore, the height of the gap between the vanes 14, 15 should be substantially the same as the height of the door zone.

Figure 1 shows the closing and opening arrows starting from the connection point 3. The closing arrow indicates the direction in which the rope driving device pulls the door (to the left in the drawing) when the door is closed, while the opening arrow indicates that the rope driving device pulls the door when the door is opened . The closing arrow also indicates the closing movement direction of the door, and the opening arrow indicates the opening movement direction of the door. 1, the angle at which the operating lever 5 rotates clockwise with respect to the pivot 6 is indicated by the sector 6a shown in the pivot 6 when the rope driving device attempts to open the door . The rotational movement of some other parts 7, 8, 9 caused by the rotation of the operating lever 5 in the link device is represented by the sectors 7a, 8a, 9a shown on the appropriate part. The portions 7, 8, 9 of this linkage device rotate about the fixed pivots 7b, 8b, 9b relative to the door coupler. These pivots 7b, 8b and 9b, which are fixed with respect to the door coupler, are represented by filled black circles in the figure. All other pivots and connection points fixed for the door coupler are also shown as filled circles. The pivot and connection points that move with the parts of the link device are represented by an empty (white) circle. Fig. 2 shows the positions of the parts of the linkage, the door coupler vanes 14,15 and the catches, resulting from the operation of the linkage 2 caused by the movement of the operating lever.

The following explains how the dynamic effect resulting from the actuating lever 5, which rotates by the sector 6a, is transmitted to the link device 2. The operating lever 5 is connected to the link device by means of three movable pivots 5x, 5y, 5z. Below the actuating lever there is a support lever 21 rotatably connected to the fixed pivot 21a and having a movable pivot 21x, 21y. Lever arms between pivots 21a, 21x and between pivots 6, 5x each have the same length. Similarly, each of the lever arms between the pivots 21a, 21y and between the pivots 6, 5y has the same length. The left vane 14 is connected to the operation lever 5 and the support lever 21 by pivots 5x and 21x. Connected to the actuating lever 5 and the support lever 21 by the pivots 5y and 21y is a synchronizing bar which causes the pivots 5x, 21x, 5y and 21y to constitute the corner points of the rhomboid The left vane 14 and the synchronizing bar 16 are parallel to each other and the lever arms between the pivots 21a and 21x and between the pivots 6 and 5x are parallel to each other and the pivots 21a and 21y And the lever arms between the pivots 6, 5y are parallel to each other. In fact, as long as the synchronizing bar is moving, the synchronizing bar 16 corresponds to the vane of a conventional door coupler corresponding to the vane 15, which acts as a sliding vane to actuate the lock, Is a separate face structure of the locking bar 16 that prevents the locking pawl 10 from unwinding when it is away from immediate vicinity of the bar 16. Connected to the operating lever 5 in the pivot 5z is the left end of the first rod 22 connecting the operating lever 5 to the upper triangular lever 7. The rod has a joint 22a that allows bending of the rod between its ends. The upper triangular lever 7 is held by a fixed pivot 7b. Around this pivot 7b, the upper triangular lever has a connection point for pivot 7x, 7z and a pulling spring 23 which moves with this triangular lever. Connected to the uppermost pivot 7z is the right end of the rod 22. When the rod 22 is moved to the right as the operating lever 5 rotates clockwise, the triangular lever 7 also rotates clockwise. This clockwise rotational motion is assisted by a pulling spring 23 which applies a pull at the connecting point 7y on the right hand side and acts in the downward direction on the suspension plate towards the connecting point 23a of the pulling spring. The pulling spring 23 is not necessary if the rod does not have a joint 22a. The clockwise rotation of the first triangular lever causes the left pivot 7x on the triangular lever 7 to move upwardly so that the right movable pivot 8y of the second triangular lever 8 is moved to the second rod 24 To cause the triangular lever 8 to rotate counterclockwise with respect to the pivot 8b, thereby causing the left pivot 8x to move to the right. The first end of the second rod 24 is connected to the pivot 7x and the second end is connected to the pivot 8y. The pivots 8b, 8x and 8y of the triangular lever 8 are positioned near the corners of the triangular lever 8.

Indeed, the above description of the movement of the various parts of the linkage applies to both the interior and exterior of the landing zone, which is based on the door control reference, i.e. the pull generated by the door drive device from the closing direction to the opening direction When the change is made, the drive lever is consequently rotated by an angle corresponding to the sector 6a.

Referring to Figures 1 and 2, the situation in which the elevator car is outside the landing zone will be described, and with reference to Figures 3 and 4, the situation in which the elevator car is within the landing zone is described.

The third rod 25 is connected to the pivot 8x on the triangular lever 8 by the first end. The third rod 25 is rotatably attached to the right end of the L-shaped lock lever 11 by the pivot 25a between the ends of the third rod. The lock lever 11 is in a stopped state, which is ensured by a compression spring 12 which exerts upward pressure on the left end of the lock lever to press the lock against the lock position. The figure shows the springs 12, 23 only in Fig. As the triangular lever 8 moves the first end of the rod 25 connected to the pivot 8x to the right, the rod 25 rotates about the pivot 25a, The second end of the lever 27 moves to the left and acts on the pivot 27a of the end portion of the first suspension lever 27 of the vane 15 by the fourth rod 26 so that the lever 27 Turn left. The first end of the fourth rod 26 is connected to the second end of the third rod 25 by the pivot 25x and the second end of the fourth rod 26 is connected to the second end of the rod 26 by the pivot 27a 1 suspension lever 27 as shown in Fig. The vane 15 is connected to the door coupler by two suspension levers 27, The first suspension lever 27 and the second suspension lever 28 are connected to the suspension plate 1 supporting the door coupler by the pivots 27x and 28x at the first end of each lever fixed to the door coupler And is rotatably connected. The second end of the suspension levers 27, 28 is connected to the vane 15 by pivots 27y, 28y. The two suspension levers 27, 28 are of the same length. The pivots 27y, 28y, 27x and 28x are arranged relative to each other and relative to the suspension plate 1 such that when the suspension levers 27 and 28 rotate, the vanes 15 are aligned vertically . Therefore, the movement of the link device only moves the vane 15 to the left, without releasing the lock when the car is outside the landing zone. The compression spring 12 ensures that the vane moves to the left. Due to the force exerted on the lock lever 11 by the compression spring, the pivot 25a remains stationary while the pivot 25x is moving.

Referring to Figs. 3 and 4, the situation in which the elevator car is unlocked in the landing zone is explained.

Fig. 3 is a cross-sectional view of the operating lever 5 in a state in which the operating lever 5 is moved to the next position so that the door coupler engages with the rollers 17, 18 on the landing door and a sector 6a indicating an angle at which the operating lever 5 first rotates clockwise to unlock And another sector 6A representing the angle of rotation.

In the manner described above, the action of the link device is such that the rotation of the levers 7, 8 between the other devices, as indicated by the sectors 7a, 8a shown at the top of the triangular levers 7, Motion. Because the right vane 15 is pressed against the right roller 18 when the elevator car is inside the landing zone, several different parts of the linkage move in a different way than when the car is outside the landing zone. As described above, the roller 18 is, for example, a fixed roller, that is, one of the rollers held in a horizontal orientation relative to the landing door when the door coupler vane is pressed against the roller. On the other hand, the roller 17 can be moved a little distance relative to the landing door so that the movement caused by the pressure exerted on the roller by the door coupler vane 14 can be used to unlock the landing door . As the vane 15 is pressed against the roller 18, the roller prevents the vane from moving to the left. Important motions in terms of preferred operation are the clockwise movement of the third rod 25 relative to the pivot 25x by an angle represented by the sector 25A, which occurs as a result of counterclockwise rotation of the triangular lever 8 It is a rotational movement.

Fig. 4 is a cross-sectional view of a portion of the claw 10, the door coupler vanes 14, 15 and the portions of the link device 2, which are the result of the action of the link device caused by the actuating lever that moves by an angle corresponding to the sector 6a. ≪ / RTI > Connected to the pivot 8x on the triangular lever 8 is the first end of the rod 25, the lower end of which is connected to the fourth rod, and when the upper end of the rod is moved to the right by the triangular lever , And the pivot 25x at the lower end acts as a fulcrum of its rotational movement. Since the movement of the right vane 15 and hence the movement of the suspension lever 27 is also prevented, the pivot 25x at the right end of the fourth rod acts as a fixed lumbar support against the rotational motion of the third rod do. In this situation, the holding force indirectly received by the pivot 25x is greater than the effect of the compression spring 12 on the lever 11. [ As a result, the pivot between the end portions of the third rods to which the L-shaped lock lever 11 is connected is pulled to the right a little distance. The pulling caused by the movement of the lock lever 11, So that the opening motion of the door is started. At the same time, the safety switch 13, which is provided to be coupled to the lock 10, is opened. From the safety switch, an electrical signal indicative of whether or not the car door is locked is supplied to the safety circuit and, if necessary, to the control system of the elevator. After the lock is released, the operating lever further rotates by a distance corresponding to the sector 6A, as shown in Fig. This movement of the operating lever causes the right door coupler vane 14 to move in contact with the right roller 17 on the landing door so that the door coupler rollers 17 and 18 are moved between the door coupler vanes 14 and 15 So that a complete coupling is made between the landing door and the car door. The lever 22 can be freely rotated by the sector 6A because the lever 22 is provided with the joint 22a that allows the rod to bend so that the movement toward the triangular lever 7 after the lock is released from the rod 22, Lt; / RTI >

It will be apparent to those skilled in the art that other embodiments of the present invention are not limited to the embodiments described above, but may be modified within the scope of the appended claims.

Claims (8)

(14, 15) designed to grip at least one corresponding portion (17, 18) associated with the elevator car door and being moved by the link device (2) and provided on the landing door, In a door coupler (4) connected to a claw (10) having a closed position to prevent movement of the door and an open position to allow movement of the door, the release movement of the claw (10) from the closed position to the open position Wherein the gripping element is permitted when the gripping element is pressed against the counterpart and the opening motion of the card can be initiated by releasing the lock. The door coupler according to claim 1, characterized in that the operating force required for the gripping elements (14, 15) to grip the corresponding portions (17, 18) is obtained from a drive for moving the door. The door coupler according to claim 1 or 2, characterized in that the door coupler comprises an operating lever for receiving an actuating force for moving the gripping elements (14, 15) from an external source to release the catches (10) (5). ≪ / RTI > 3. The method according to claim 1 or 2, characterized in that the movement of the operating lever (5) for releasing the catch (10) and engaging the corresponding part (17,18) is done in two steps so that during the first step (6a) The presence of corresponding portions 17,18 within the reach of the elements 14,15 is sensed by one of the gripping elements 14,15 and when this gripping element meets the corresponding portion, And the corresponding portions (17, 18) are engaged by the gripping elements (14, 15) during the second step. 3. A device according to claim 1 or 2, characterized in that the gripping elements (14,15) have a gap therebetween which opens towards at least the upper and lower end and towards the landing door and which is bent at the upper and lower ends in a direction away from the gap , And the corresponding portions (17, 18) are rollers protruding from the landing door toward the elevator shaft and aligned with the gap between the vanes. (10) which is arranged in combination with the door coupler (4) and which has a closed position for preventing movement of the door and an open position for permitting movement of the door, and a door Characterized in that the locking device (10) comprises a link device (2) for causing the movement of the lock (10) to move from the open position to the closed position and from the closed position to the open position, The operating force acting in the opening direction (opening) when the gripping element 15 of the door coupler is pressed against the counterpart 18 releases the catch 10 from the closed position to the open position, The actuating force causes the movement of the gripping element (15) when the locking element (15) does not meet any counterpart and the opening movement of the card can be started by releasing the locking element Chi. 7. The locking device according to claim 6, wherein the link device (2) comprises a locking lever (11) for moving the lock (10) from the open position to the closed position and from the closed position to the open position, Is loaded by a spring which urges the lock (10) towards its closed position. 8. A device according to claim 6 or 7, characterized in that, as the actuating lever (5) rotates in the opening direction (open), when the right vane (15) is pressed against the right roller Characterized in that the force generated in the pivot (25a) in the link device (2) and intended to keep the pivot in place is less than the counter force generated by the movement of the link device (2).