KR100351289B1 - Door coupling device for elevator - Google Patents

Abstract

The present invention relates to a door coupling device of an elevator, and in the related art, since the second interlocking roller of the other end of the restraint holding lever is caught in the cam curve of the cam plate, the guide block swings in the up and down directions because it is free. The present invention has a problem that the limit switch malfunctions and may cause a large safety accident. The present invention supports the second interlocking roller of the restraint retaining lever at the lower part of the cam curve formed on the cam plate to provide the first interlocking roller. Since the cam curve and the extended follower are integrally formed to suppress the shaking of the guide block, the cam plate can effectively suppress the phenomenon that the limit switch which detects the end of the movement of the drive belt by the cam plate can be effectively suppressed by the cam plate. It is possible to secure stable operation characteristics of the limit switch.

Description

Door coupling device of elevator {DOOR COUPLING DEVICE FOR ELEVATOR}

The present invention relates to a door coupling device of an elevator, and more particularly, a guide block installed in a coupling device for connecting and opening and closing together a car door of a car installed in an elevator and an elevator door installed in a platform on each floor is swinging. Thus, the phenomenon that the limit switch for detecting the end of the movement of the drive belt is malfunctioned by the cam plate can be effectively suppressed.

In general, an elevator includes a car door installed in a car (= cage) moving along a hoistway of a building and a landing door installed at a hoistway communicating with the hoistway at each floor of the building. Therefore, both the door and the boarding doors must be opened and closed for passengers to get on and off on each floor. In the opening and closing of the car door and the boarding door using power, a means for installing and opening the car door and the boarding door together by installing one drive source on the car side without using different power in consideration of economical efficiency is required.

As a means for opening and closing the car door and the boarding door together as a driving source installed in the car as described above, a so-called door coupling device is used to connect the car door and the boarding door when the car stops on each floor.

On the other hand, if the landing door is opened manually when the car is out of the designated stop position, there is a risk of falling down the hoistway.Therefore, the opening door of the door is locked while the landing door is locked so that the landing door cannot be opened arbitrarily. There is essentially a landing door lock device which is released by the coupling device only when it is started.

1 is a front view showing a door coupling device of a conventional elevator installed in a car door frame in order to explain a door coupling device of a conventional elevator related to a landing door lock device of a boarding door. 3A is a front view showing an operating state before the conventional door coupling device unlocks the landing door lock device of the boarding door, and FIG. 3B is a conventional door coupling device of the boarding door. Figure 4 is a front view showing the operating state after unlocking the landing door lock device of Figure 4 is a plan view showing a conventional door coupling device, Figure 5 is a side view showing a conventional door coupling device, Figure 6 is a conventional guide Front view showing a block.

First, referring to FIG. 1, a car door frame 1 is installed on an elevator car (not shown), and a driving motor 2 is mounted on one side of an upper end of the car door frame 1, and the car door is installed. The frame 1 is provided with a drive pulley 4 which is connected as a drive motor 2 and a reduction belt 3 and decelerates and rotates, and the drive pulley 4 circulates with the driven pulley 5. (6), a car door (not shown) is integrally suspended from the lower end of the rinsing plates (9) 9a movably supported along the guide rails (8) installed in the car door frame (1). Installed in a state.

In addition, the coupling device 10 according to the present invention is a locking means of the landing door (not shown) on the upper part of the base 11 fixed to the rinsing plate 9 of the one cardor (not shown). A pair of coupling skates 14 and 14a are installed side by side in the vertical direction so as to face each other at intervals to allow the unlocking rollers of the landing door lock device to enter and exit, and the driving belt 6 is provided with a landing door lock device of the landing door. The guide block 15 for moving the opening / closing section of the door, including the locking position for locking and the release position for releasing it, is installed to interlock with the drive belt 6.

A rack gear portion 16 is formed at the lower end of the guide block 15, a guide hole 17 is formed at the center of the guide block 15 to correspond to an interlocking section between the locking position and the unlocking position. The upper limit of the support bracket 18 fixed to one side of the guide block 15 is provided with a limit switch 19 for detecting the moving distance of the guide block 15 when opening and closing the door.

In addition, coupling arms 20 and 20a are hinged to the base 11 between the upper and lower ends of the coupling skates 14 and 14a, respectively, and between the upper ends of the coupling skates 14 and 14a. The pinion 21 engaged with the rack gear portion 16 of the lower end of the guide block 15 is connected to the coupling arm 20 of the guide arm 15 so as to be rotatable about the base 11. The guide plate 22 is fixed to the cardor frame 1 at the rear, and a pair of guide shafts 23 and 23a inserted into the guide hole 17 of the guide block 15 on one side of the guide plate 22. The guide rollers 24 and 24a are installed at both ends of the guide shafts 23 and 23a in the guide hole 17.

On the other side of the guide plate 22, a restraint holding lever 25 is rotatably installed to maintain the restrained state so that the gap between the pair of coupling skates 14 and 14a does not change when the door is closed. One end of the restraint holding lever 25 is rotatably provided with a first interlocking roller 26 for stopping by contacting the guide block 15 at one end corresponding to the unlocking position when the door is closed. A second interlocking roller 27 is rotatably installed at the other end of the lever 25, and the first interlocking roller 26 is released at the section between the locked position and the unlocked position in the cardor frame 1. 2, a cam plate 29 having a cam curve 28 spaced apart from the interlocking roller 27 is installed, and an elastic force to rotate in the state of restraining and holding the restraint holding lever 25 at the center of the restraint holding lever 25 is provided. To Consists of a spring (30) for oil is provided.

Therefore, the car door (not shown) of the car is closed and the landing door is locked by the landing door lock device as the locking means in the state that the car can move, and in this state, the guide block 15 is in the closing direction of the door. In this case, the guide rollers 24 and 24a are positioned at the left end corresponding to the locking position of the guide hole 17 formed in the guide block 15, and the other end of the restraint holding lever 25 The second interlocking roller 27 is spaced apart from the cam curve 28 of the cam plate 29, and the first interlocking roller 26 at one end of the retaining lever 25 is positioned above the guide block 15. The pinion 21 is engaged with the left end portion of the rack gear portion 16 formed at the lower end of the guide block 15, and the pair of coupling skates 14 and 14a are widened to the maximum. Will be located.

In this way, the widening interval between the coupling skates 14 and 14a allows passage of the unlocking roller of the landing door lock device, which is the locking means of the above-mentioned boarding door, to pass therebetween.

When the car moves and stops on one of the platforms, the locking release roller of the boarding door installed at the platform comes in at the widened interval between the coupling skates 14 and 14a as shown in FIG. 3A. Since the distance between the ring skates 14 and 14a is sufficiently wide, the landing door lock device is locked to the locker of the latch, so that the boarding door remains locked.

When the drive motor 2 is operated to open the door in the state as shown in FIG. 3A, the drive belt 6 is circulated in the corresponding direction by the drive motor 2 and coupled to the drive belt 6. The guide block 15 is moved in the door opening direction. The moving section of the guide block 15 is an interlocking section for interlocking a pair of coupling skates 14 and 14a to release the initial door lock state. And, it can be described by dividing the pure door opening and closing period after the linkage.

That is, the guide rollers 24 are respectively provided at both ends of the pair of guide shafts 23 and 23a provided at one side of the guide plate 22 fixed to the cardor frame 1 behind the guide block 15 ( The interlocking section 24a corresponds to the interlocking section from the left end (see Fig. 3a) of the guide hole 15 to the right end (see Fig. 3b) and restrained in the door opening direction. The door and the boarding door are not opened yet, and only the guide block 15 is moved, and the pinion 21 is rotated approximately 70 degrees as shown in FIG. 3B according to the movement of the guide block 15 in the interlocking section thereof. As the coupling arms 20 and 20a connected to 21 are interlocked, the distance between the coupling skates 14 and 14a is narrowed.

When the distance between the coupling skates 14 and 14a is narrowed, as shown in FIG. 3B, the locking release roller of the landing door lock device entered therebetween stands up in an oblique state and the latch is removed from the locker. The locked state of the door is released.

Therefore, from this time, the guide block 15 leads the card door constrained in the door opening direction through the guide rollers 24 and 24a hanging on the right end of the guide hole 17, and the card door is a pair of couples. Since the unlocked riding door is led through the unlocking roller 13 connected between the ring skates 14 and 14a, the car door and the landing door are opened at the same time.

Meanwhile, in FIG. 3B, as the guide block 15 moves, the first interlocking roller 26 at one end of the restraint holding lever 25 is in contact with the upper end of the guide block 15. While the 25 is lowered and is in a horizontal state, the right end of the guide block 15 is pushed, and at the same time, the second interlocking roller 27 at the other end of the retaining lever 25 has a cam curve of the cam plate 29. 28, the state of restraint between the guide block 15 and the cardor is maintained.

At this time, the spring 30 installed in the center of the restraint holding lever 25 provides an elastic force in a stable direction to maintain the restraint state of the restraint holding lever 25, and thus the guide block 15 and the car By holding the door constrained, the guide block 15 until the left end of the guide hole 17 of the guide block 15 reaches the guide rollers 24 and 24a when the door closing operation is started after the door opening operation is reversed. By moving against this door, it becomes possible to prevent the space between the pair of coupling skates 14 and 14a from being widened.

In addition, the door closing operation proceeds in the reverse order of the above-described door opening operation, and when the car door and the landing door are completely closed, the landing door is locked again, and the car returns to a state where the car can move.

However, such a conventional door coupling device has a limit switch 19 installed at the upper end of the support bracket 18 fixed to one side of the guide block 15 when the guide block 15 for opening and closing the door is moved. The moving distance of the guide block 15 is sensed as being in contact with and spaced apart from the actuating member 31 fixed to the cardor frame 1, in which the restraint holding lever 25 is operated during operation of the limit switch 19. Since the second interlocking roller 27 of the other end is caught in the cam curve 28 of the cam plate 29 and is in a free state, the guide block 15 swings in the up and down directions. There was a problem such as a malfunction may cause a large safety accident.

The present invention is to solve the above problems, the guide block is installed in the coupling device for opening and closing the car door of the car to be installed in the elevator and the landing door is installed in each floor platform swings the drive belt It is an object of the present invention to provide an elevator door coupling device that can secure the stable operation characteristics of a limit switch by effectively suppressing a phenomenon in which a limit switch that detects the end of movement by a cam plate.

1 is a front view showing a state in which a door coupling device of a conventional elevator is installed in a card door frame

2 is a perspective view showing a conventional door coupling device

3A is a front view showing an operating state of a conventional door coupling device before unlocking the landing door lock device of the boarding door;

Figure 3b is a front view showing the operating state after the conventional door coupling device unlocks the landing door lock device of the boarding door

4 is a plan view showing a conventional door coupling device

Figure 5 is a side view showing a conventional door coupling device

6 is a front view showing a state in which the guide block and the retaining lever and the cam plate according to the present invention are installed;

Explanation of symbols on the main parts of the drawings

100; Cam plate 110; Cam curve

120; Follower

In order to achieve the above object, the present invention provides a second interlocking roller at the other end of the restraint holding lever such that the first interlocking roller of one end of the retaining lever is released in the section between the locking position and the releasing position. An elevator door coupling device having a cam plate formed with a cam curve spaced apart from each other, wherein the second linking roller of the restraint holding lever is supported under the cam curve formed on the cam plate and guided through the first link roller. An elevator door coupling device is provided, characterized in that the cam curve and the follower portion extending integrally are formed to suppress the fluctuation of the block.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

6 is a front view showing a state in which the guide block, the restraint holding lever and the cam plate according to the present invention are installed.

The present invention supports the second interlocking roller (27) of the restraint holding lever (25) in the lower portion of the cam curve (110) formed on the cam plate (100), which is one of the main components constituting the door coupling device of the elevator. In order to suppress the fluctuation of the guide block 15 through the first interlocking roller 26, the follower unit 120 extending from the cam curve 110 is integrally formed.

As described above, the cam curve 110 and the follower 120 extending from the cam curve 110 formed on the cam plate 100, which is one of the main components constituting the door coupling device of the elevator, are integrally formed. Since the second interlocking roller 27 at the other end of the restraint holding lever 25 extends on the cam curve 110 of the cam plate 100 to maintain the restraint state between the guide block 15 and the card door. The follower 120 supports the second interlocking roller 27 by being caught by the part 120, and swings the guide block 15 through the first interlocking roller 26 of the one end of the restraint holding lever 25. Can be suppressed to ensure stable operating characteristics of the limit switch 19.

As described above, in the present invention, the guide block installed in the coupling device for connecting and opening and closing the car door of the car installed in the elevator and the boarding door installed in the platform of each floor is swung to stop the movement of the drive belt. It is a very useful invention with many advantages, such as the ability to detect the malfunction of the limit switch to be effectively suppressed by the follower part extending in the cam curve of the cam plate, thereby ensuring stable operating characteristics of the limit switch. .

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and is generally defined in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with knowledge of the world will be able to make various changes.

Claims (1)

A cam plate having a cam curve spaced apart from the second interlocking roller at the other end of the restraining lever is mounted on the card door frame installed at the upper part of the car so that the first interlocking roller at one end of the restraint holding lever is released. In the door coupling device of an elevator to be installed, A follower part extending from the cam curve is integrally formed to support the second interlocking roller of the restraint holding lever at the lower part of the cam curve formed on the cam plate to suppress the fluctuation of the guide block through the first interlocking roller. Door coupling device of the elevator.