JP2003104669A - Door opening/closing limiting device and elevator device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device improved in workability and the safety of work. SOLUTION: A landing door 5 is locked in an open lock position by a door lock mechanism 21 by providing a locking hole 22 in a header case, and engaging a lock pin 27 of the door lock mechanism 21 into the locking hole 22. The door can thereby be locked in the open lock position without using a nipper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door open / close restriction device for locking a door at a predetermined open position for performing operations such as adjustment, and an elevator apparatus using the same.

[0002]

2. Description of the Related Art FIG. 9 is a perspective view of a main part of a landing door of a conventional elevator apparatus as seen from the hoistway side. In FIG.
An entrance / exit 1 communicating with a hoistway (not shown) is formed at the landing, and a header case 2 as a door support member is provided above the entrance / exit 1 and a hole sill 3 is provided below the entrance / exit 1. There is. A guide rail 4 is horizontally fixed to the header case 2, and the guide rollers 10 of a pair of left and right landing doors 5 are slidably mounted on the guide rail 4. Each landing door 5 includes a door hanger 5a supporting the guide roller 10 and a door panel 5b provided below the door hanger 5a.
Is slid between the fully closed position and the fully open position.

A pair of left and right pulleys 6 are provided on the header case 2, and an endless belt 7 is hung on the pair of pulleys 6. Both of the door hangers 5a are provided on the upper traveling portion and the lower traveling portion of the endless belt 7 in the fixed portion 1
1 and 12 are fixed to each other, and both landing doors 5 are moved in synchronism with each other in opposite directions to open and close the entrance / exit 1.

Further, one door hanger 5a (door hanger 5a on the right side in FIG. 9) is provided with a door interlock portion 8. This door interlock part 8
Locks both landing doors 5 in the closed position when the car (not shown) is not landed, and when the car (not shown) is landed, its engagement means (not shown) It is configured to be engaged and to unlock the door to receive a door operation force. That is, the opening / closing of the hall door 5 is controlled by the car during normal operation of the elevator apparatus.

By the way, there is a case where it is necessary to open the landing door 5 and perform the work at the time of adjustment, maintenance and inspection, rescue, etc. of the elevator apparatus. Conventionally, an unlock key (not shown) is used. The door interlock portion 8 is unlocked, and the hall door 5 is manually moved to a desired open position. Next, as shown in FIG. 10, a sandwiching tool 9 such as a tool is provided between the lower end surface of the door panel 5b and the upper surface of the hole sill 3.
The landing door 5 was locked with the help of. That is, conventionally, the pinch 9 holds the locked state of the hall door 5 at the open position.

[0006]

However, in such a conventional example, since the clip 9 is only sandwiched between the door panel 5b and the hole sill 2, adjustment, maintenance, inspection,
During the rescue operation, the clip 9 may come off and the landing door 5 may unexpectedly close, or the detached clip 9 may fall into the hoistway, and it is desired to improve workability and work safety. It was Further, when a strong external force is applied to the hall door 5, the pinch 9 may damage the lower portion of the door panel 5b, so caution is required during work, and workability is also poor in this respect. It was

Therefore, the present invention has been made in view of the above problems, and provides a door opening / closing restriction device and an elevator apparatus using the same which can improve workability and work safety. With the goal.

[0008]

According to a first aspect of the present invention, a door movably supported by a door support member is changed between a locked state in which it is locked at a predetermined open lock position and an unlocked state in which it is allowed to move. A door lock mechanism that can be provided is provided on either one of the door and the door support member, and a locked portion is provided on the other, and the door lock mechanism is located at a position where it projects in the locked state and in the unlocked state. A lock pin is provided at a position that does not project, the lock pin engages with the locked portion in the locked state, and the lock pin does not engage with the locked portion in the unlocked state.

In this door opening / closing restriction device, the door can be locked at the open lock position without using a clip. Further, in this door opening / closing restriction device, the lock pin is locked by entering the locked portion, so that
Can be securely locked.

A second aspect of the present invention is the door opening / closing limiting device according to the first aspect, wherein the lock pin is biased toward the protruding position by the biasing force of the biasing means, and the door lock mechanism is provided. When the door is locked at a position other than the open lock position, the lock pin slides at a position other than the locked portion by the biasing force of the biasing means when the door is moved to the open lock position. When the door is moved and reaches the open lock position, the lock pin is engaged with the locked portion by the urging force of the urging means.

In this door opening / closing restriction device, in addition to the operation of the invention described in claim 1, when the door is located at a position other than the open lock position and the door lock mechanism is operated in the locked state, When is moved to the open lock position, the door is locked automatically, which facilitates the door lock work.

The invention according to claim 3 is claim 1 or claim 2.
The door opening / closing restricting device described in 1. is characterized in that the door lock mechanism is provided on a door hanger of the door, and a locked portion is provided on a header case of the door supporting member.

In this door opening / closing restriction device, the same operation and effect as those of the invention described in claims 1 and 2 can be obtained.
It can be obtained for a structure in which a door hanger is suspended in a header case.

The invention of claim 4 is the first to third aspects of the invention.
The door opening / closing restriction device according to any one of claims 1 to 5, wherein the door lock mechanism is provided with an erroneous operation preventing unit that cannot perform an operation from an unlocked state to a locked state by only a single switch operation. Characterize.

In this door opening / closing limiting device, in addition to the effects of the invention described in claims 1 to 3, the door is not locked even if one operation switch is operated, so that the door is mischievously or accidentally locked. Can be prevented.

A fifth aspect of the present invention is the door opening / closing limiting device according to the fourth aspect, wherein the erroneous operation preventing means is provided with a plurality of operation switches, and only when the plurality of operation switches are operated simultaneously. It is characterized in that the state is changed from the unlocked state to the locked state.

In this door opening / closing restriction device, in addition to the operation of the invention described in claim 4, the door is not locked unless a plurality of operation switches are simultaneously operated, so that the door is locked by an erroneous operation or a mischief. It can be prevented.

According to a sixth aspect of the present invention, in the door opening / closing limiting device according to the fifth aspect, the erroneous operation preventing means is provided with an immovable pseudo switch between a plurality of operation switches. Is characterized by.

In this door opening / closing restriction device, in addition to the operation of the invention described in claim 5, the door is not locked even if a plurality of operation switches are operated unnecessarily. The door can be securely prevented from being locked by erroneous operation or mischief.

[0020] The invention of claim 7 is from claim 1 to claim 6.
The door opening / closing restriction device described in any one of 1 to 3 is used for a landing door.

In this elevator apparatus, the same actions and effects as those of the invention described in any one of claims 1 to 6 can be obtained for the landing door.

The invention of claim 8 is the elevator apparatus according to claim 7, wherein the open lock position of the door is a position where the door interlock portion of the landing door does not interfere with the engaging means of the car. It is characterized by being set.

In this elevator apparatus, in addition to the invention described in claim 8, when the door is positioned at the open lock position, the collision between the door interlock portion on the door side and the engagement means of the car. Accidents can be reliably prevented.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

1 to 8 show an embodiment in which the door opening / closing restriction device of the present invention is applied to a landing door of an elevator device.
Figure 1 is a rear view of the hall door in the closed position (view from the hoistway side), Figure 2 is a rear view of the hall door in the open lock position (view from the hoistway side), and Figure 3 is unlocked. Side view of the door opening / closing restriction device in a locked state, FIG. 4 is a side view of the door opening / closing restriction device in a locked state, FIG. 5A is a plan view of the door lock mechanism in an unlocked state, and FIG. The front view, FIG. 5 (c) is its left side view, FIG. 5 (d) is its right side view, FIG. 6 (a) is a plan view of the door lock mechanism in a locked state, and FIG. 6 (b) is its Front view, FIG. 6 (c)
Is a left side view thereof, FIG. 6D is a right side view thereof, FIG. 7 is an exploded perspective view of a door lock mechanism, and FIG. 8 is a front view of a dedicated key.

1 to 4, the door opening / closing restriction device 2
Since the configuration is the same as that of the conventional example described above except that 0 is provided, the same components are denoted by the same reference numerals as those of the conventional example, and the description thereof will be omitted. Only different components will be described.

That is, the door opening / closing restriction device 20 includes a door lock mechanism 21 fixed to the door hanger 5a of the one landing door 5 and a lock part which is a locked portion provided in the header case (door support member) 2. And holes 22. The door lock mechanism 21 is spaced from the header case 2 by at least β (shown in FIG. 3) in the unlocked state, and is arranged at a position where opening and closing of the normal landing door 5 is not hindered. Further, the locking hole 22 is
At the open lock position (shown in FIG. 2) where the opening interval of both landing doors 5 is α, the lock position is set to a position facing the lock pin 27 of the door lock mechanism 21 described below. And
The open lock position of the hall door 5 is set to a position where the door interlock portion 8 of the hall door 5 does not interfere with the engagement means (not shown) of the car (not shown).

As shown in FIGS. 5 to 7, the door lock mechanism 21 has an upper block member 23 and a lower block member 24 fixed to the upper block member 23. The upper block member 23 has front and rear pin slides. Lock pin 2 inserted in holes 25 and 26
7 is slidably supported. The lock pin 27 does not protrude from the front pin sliding hole 25 and is in the unlocked position (see FIG. 5).
(A) to (d)) and a locking position (FIGS. 6 (a) to (d)) protruding from the front pin sliding hole 25 are freely movable,
Further, it is biased toward the lock position by the spring force of the central spring 28 which is a biasing means. A guide pin 29 is fixed to the lock pin 27 in a penetrating state, and the guide pin 29 projects in a direction orthogonal to the sliding direction of the lock pin 27.

The upper block member 23 and the lower block member 24 have a first control rod 31 of the first operation switch 30.
And the second control rod 33 of the second operation switch 32 are slidably supported, and the sliding direction is the lock pin 2
7 is set in a direction orthogonal to the sliding direction. First and second operation switches 3 that also function as an erroneous operation prevention means
Reference numerals 0 and 32 respectively include first and second control rods 31 and 33 and first and second operating members 34 and 35 fixed to the first and second control rods 31 and 33, respectively. The first and second operation members 34 and 35 are provided with first and second cam portions 36 and 37 that interfere with the guide pin 29. The first cam portion 36 has an unlocked position holding surface 36a and an inclined guide surface 36b, and holds the lock pin 27 in the unlocked position when the guide pin 29 comes into contact with the locked position holding surface 36a.

When the guide pin 29 contacts the inclined guide surface 36b, the lock pin 27 can be moved from the locked position to the unlocked position by guiding the guide pin 29. The second cam portion 37 has a lock release position holding surface 37a and a lock position holding surface 37b. When the guide pin 29 comes into contact with the lock release position holding surface 37a, the second cam portion 37 holds the lock pin 27 in the lock release position and locks it. When the guide pin 27 contacts the position holding surface 37b, the lock pin 27 is held at the lock position. In other words, the lock pin 27 has the lock release position holding surface 3 on both sides.
Unless the guide pin 29 is disengaged from 6a and 37a, the guide pin 29 cannot move to the lock position. In addition, the first and second control rods 31, 33 have the first and second springs 38,
By the spring force of 39, each lock release position holding surface 36a,
The guide pins 29 are urged in the direction in which the guide pins 29 abut 37a.

Further, the lower block member 24 is provided with a dummy switch 40 which is an erroneous operation preventing means. The dummy switch 40 is immovable, and the first operation member 34 of the first operation switch 30 and the first operation member 34 are provided. The two operation switch 32 is arranged between the second operation member 35 and the second operation member 35.

On the other hand, as shown in FIG. 8, the dedicated key 41 has an unlocked shape portion 41a for unlocking the interlock portion 8 of the hall door 5 at one end and a door lock mechanism 21 at the other end. And a lock shape portion 41b for locking the. The lock-shaped portion 41b includes the first operating member 34 and the second operating member 3 of the first and second operating switches 30 and 32.
5 has a recessed shape so as not to press the dummy switch 40 when pressing them together.

Next, the operation of the above configuration will be described. In order to open the landing door 5 for adjustment, maintenance and inspection, rescue of the elevator device, etc., the unlocking shape portion 4 of the dedicated key 41 is used.
The door interlock portion 8 of the hall door 5 is unlocked using 1a. Next, the hall door 5 is manually slid to open to the open lock position. Next, as shown in FIG. 4, the first and second operation switches 30, 32 of the door lock mechanism 21 are locked by using the lock-shaped portion 41b of the dedicated key 41.
Press upward. Then, the first and second control rods 3
The guide pin 29 is disengaged from the lock release position holding surfaces 36a, 37a of the lock pins 1, 33, the lock pin 27 is moved to the lock position by the spring force of the central spring 28, and the lock pin 27 is inserted into the lock hole 22 of the header case 2. (Fig. 4
reference). Then, when the pressing of the first and second operation switches 30 and 32 by the dedicated key 41 is released, the first and second control rods 31 and 33 move the first and second springs 38 and 39.
However, since the lock pin 27 is moved to the lock position, the guide pin 29 is moved to a position where it abuts the lock position holding surface 37b of the second operation switch 32. You cannot return to the original position. Therefore, the lock position of the lock pin 27 is maintained, and the hall door 5 is locked.

When the adjustment, maintenance and inspection, rescue, etc. of the elevator apparatus are completed and the opening of the hall door 5 is to be returned, a portion other than the lock-shaped portion 41a of the exclusive key 41 or a simple rod-shaped tool is used. Only the second operation switch 32 is pressed upward by using. Then, the guide pin 29 is guided by the inclined guide surface 36b, so that the lock pin 27 slides to the unlock position side against the spring force of the central spring 28. Then, when sliding to the unlocked position, the first control rod 31 of the first operation switch 30 returns to the original position by the spring force of the first spring 38, and the unlocked position holding surface 3
The position where the guide pin 29 contacts the 6a is reached. And
When the pressing of the second operation switch 32 is released, the second control rod 33 returns to the original position by the spring force of the second spring 39, and the guide pin 29 comes into contact with the unlock position holding surface 37a. Therefore, the unlocked position of the lock pin 27 is maintained, and the hall door 5 returns to the unlocked state.

As described above, in the door opening / closing restriction device 20, the hall door 5 can be locked at the open lock position without using a clip. Therefore, as in the conventional example, the door panel 5
The sandwich between b and the hall sill 3 comes off and the landing door 5 closes unexpectedly, the detached sandwich falls into the hoistway, or the sandwich acts on the landing door 5 due to the external force acting on the landing door 5. Since a situation such as damaging 5 does not occur, workability and work safety are improved.

Further, in the above embodiment, the landing door 5
A door lock mechanism 21 and a header case (door support member) 2 with a locking hole (locked portion) 22. The door lock mechanism 21 is located at a protruding position in a locked state and does not protrude in an unlocked state. The lock pin 27 located at the retracted position is provided, and the lock pin 27 has the lock hole 2
Because it is locked by entering 2, it is strong and
Can be securely locked. If it is possible to avoid the interference between the hall door 5 and the door lock mechanism 21, the hall door 5 may be provided with the lock hole 22 and the header case (door support member) 2 may be provided with the door lock mechanism 21.

Further, in the above-described embodiment, the lock pin 27 is urged toward the protruding position by the urging force of the central spring 28, and the door lock mechanism 21 operates to lock the door door 5 at a position other than the open lock position. When the landing door 5 is moved to the open lock position, the lock pin 27 slides on a portion other than the locking hole 22 by the urging force of the central spring 28, and the landing door 5 reaches the open lock position. Then, the lock pin 27 is urged by the central spring 28 so that the lock hole 22 is locked.
Engage with. That is, when the hall door 5 is at a position other than the open lock position and the door lock mechanism 21 is operated in the locked state, when the hall door 5 is moved to the open lock position, the lock is automatically performed. Therefore, the door lock work becomes easy.

Further, in the above-mentioned embodiment, the door lock mechanism 21 is provided with the erroneous operation preventing means which is impossible to operate from the unlocked state to the locked state only by a simple switch operation. Specifically, the first erroneous operation prevention unit is provided with two first and second operation switches 30 and 32 as operation switches, and the first and second operation switches 30 and 32 are provided.
Only when both are simultaneously operated, the lock release state is changed to the lock state. Therefore, the hall door 5 cannot be locked unless the first and second operation switches 30 and 32 are simultaneously operated, so that the hall door 5 is erroneously operated.
Can be prevented from being locked. The second erroneous operation prevention means is provided with an immovable dummy switch 40 between the first operation switch 30 and the second operation switch 32.
Therefore, even if a plurality of operation switches are operated unnecessarily, the hall door is not locked, so that the hall door 5 can be reliably prevented from being locked by an erroneous operation. Incidentally, three or more operation switches may be provided, or two or more dummy switches may be provided.

Further, in the above-described embodiment, the open lock position of the hall door 5 is such that the door interlock portion 8 of the hall door 5 engages with the car (not shown) of the car (not shown).
Since it is set at a position that does not interfere with the vehicle, when the hall door 5 is positioned at the open lock position, a collision accident between the door interlock portion 8 on the hall door 5 side and the engagement means of the car is ensured. It can be prevented.

According to the above-mentioned embodiment, the door opening / closing restriction device 20 is applied to the landing door 5 of the elevator device, but it is also applicable to doors other than the elevator device.

Further, according to the above-described embodiment, the pair of landing doors 5 are the central double-opening type that opens and closes symmetrically from the central position, but the present invention can be applied to the single-opening type that opens and closes in any one direction. Of course. Of course, the landing door 5 of the elevator device can be applied to a domestic elevator.

[0042]

As described above, according to the present invention,
It has a door lock mechanism that can move the door movably supported by the door support member between a locked state where it locks at a predetermined open lock position and an unlocked state where it allows movement, so it can be opened without using a clip. Since the door can be locked at the lock position, workability and work safety are improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a rear view of a landing door located in a closed position (a view from the hoistway side).

FIG. 2 shows an embodiment of the present invention, and is a rear view of the landing door located in the open lock position (as viewed from the hoistway side).

FIG. 3 is a side view of the door opening / closing restriction device according to the embodiment of the present invention, which is in the unlocked state.

FIG. 4 is a side view of the door open / close restriction device in the locked state according to the embodiment of the present invention.

5A and 5B show an embodiment of the present invention, in which FIG. 5A is a plan view of a door lock mechanism in an unlocked state, FIG. 5B is its front view, FIG. 5C is its left side view, and FIG. The right side view.

FIG. 6 shows an embodiment of the present invention, in which (a) is a plan view of a door lock mechanism in a locked state, (b) is a front view thereof, (c) is a left side view thereof, and (d) is the same. Right side view.

FIG. 7 is an exploded perspective view of the door lock mechanism according to the embodiment of the present invention.

FIG. 8 is a front view of a dedicated key according to the embodiment of the present invention.

FIG. 9 is a rear view of a landing door located at a closed position (view from the hoistway side) showing a conventional example.

FIG. 10 is a view showing a conventional door lock state.

[Explanation of symbols]

2 Header case (door support member) 5 landing doors 5a door hanger 8 Door inner lock part 20 Door opening / closing restriction device 21 Door lock mechanism 22 Lock hole (locked part) 27 Lock pin 28 Central spring (biasing means) 30 First operation switch (erroneous operation prevention means) 32 Second operation switch (erroneous operation prevention means) 40 Dummy switch (erroneous operation prevention means)

Claims (8)

[Claims] 1. A door lock mechanism capable of shifting a door movably supported by a door support member between a locked state in which it is locked at a predetermined open lock position and an unlocked state in which the door is allowed to move, the door and the door. Provided on either one of the support member, and a locked portion provided on the other, respectively, the door lock mechanism is provided with a lock pin located in a position where it projects in a locked state and in a position where it does not project in an unlocked state, A door open / close restriction device, wherein the lock pin engages with the locked portion in a locked state, and the lock pin does not engage with the locked portion in an unlocked state. 2. The door opening / closing restriction device according to claim 1, wherein the lock pin is biased toward a protruding position by a biasing force of a biasing means, and the door lock mechanism locks the door open. If the lock operation is performed at any position other than the position,
When the door moves to the open lock position, the lock pin slides on a portion other than the locked portion by the urging force of the urging means, and when the door reaches the open lock position, the lock pin urges the urging means. A door opening / closing limiting device, which is engaged with a locked portion by the urging force of the door. 3. The door opening / closing restriction device according to claim 1, wherein the door lock mechanism is provided in an upper frame of the door, and a locked portion is provided in a frame body of the door support member. A door opening / closing restriction device characterized in that 4. The door opening / closing restriction device according to claim 1, wherein the door lock mechanism operates only a single switch operation from an unlocked state to a locked state. The door opening / closing restriction device is provided with an erroneous operation prevention means that is impossible with. 5. The door opening / closing restriction device according to claim 4, wherein the erroneous operation prevention unit is provided with a plurality of operation switches, and is locked from an unlocked state only when the plurality of operation switches are operated simultaneously. A door opening / closing restriction device, which is characterized in that it changes to a state. 6. The door opening / closing restriction device according to claim 5, wherein the erroneous operation preventing means is one in which an immovable pseudo switch is provided between a plurality of operation switches. Opening / closing restriction device. 7. An elevator apparatus, wherein the door opening / closing restriction device according to any one of claims 1 to 6 is used for a landing door. 8. The elevator apparatus according to claim 7, wherein the door open lock position is set at a position where the door interlock portion of the landing door does not interfere with the engagement means of the car. Unique door opening / closing device.