JPH0734074Y2 - Manual unlocking device for elevator hall doors - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unlocking device for an elevator hall door, and more particularly to a manual unlocking device for manually opening the elevator door from the hall side during maintenance and inspection of the elevator or in an emergency. It is about improvement.

[0002]

2. Description of the Related Art An example of a conventional elevator door will be described with reference to the drawings. FIG. 6 is a vertical cross-sectional view of a main part of a conventional elevator door, FIG. 7 is a view of a landing door viewed from the hoistway side, and FIG.
FIG. 9 is an end view taken along line AA of FIG. In the figure, 1 is a hall, 2 is a three-way frame, 3 is a hall door,
Reference numeral 4 is an elevator car, 5 is a car door, and in this conventional device, each of the doors 3 and 5 is a two-door open center. 6 is a header fixed to the upper part of the hall 1, 7 is a hanger rail fixed to the header 6, 8 is a hall door 3
Door hanger fixed to the upper end of the, 9 is a door hanger 8
Is a hanger roller that is pivotally mounted on the hanger rail 7 and rolls on the hanger rail 7.

Reference numeral 10 denotes a fixed engagement plate having an L-shaped cross section fixed to the hall door 3, 11 denotes a movable engagement plate having an L-shaped cross section, 12 has one end pivotally attached to the fixed engagement plate 10 and the other end fixedly engaged. Plywood 1
A link that penetrates 0 and is axially attached to the movable engaging plate 11, 13
Is a link whose middle portion is pivotally mounted on the fixed engagement plate 10 by a shaft 13a, one end is pivotally mounted on the rod 14, and the other end is penetrating the fixed engagement plate 10 and pivotally mounted on the movable engagement plate 11,
Reference numeral 15 denotes a stopper having one end fixed to the movable engagement plate 11 and the other end penetrating the fixed engagement plate 10 and having an L-shaped cross section, which regulates the amount of movement of the movable engagement plate 11 to the right in FIG. .

Reference numeral 20 is a switch box fixed to the header 6, and has electric contacts (not shown) built therein. Reference numeral 21 denotes an engaging portion formed of a part of an outer frame of the switch box 20, 22 has one end pivotally attached to the door hanger 8 by a shaft 22a, a rod 14 pivotally attached to an intermediate portion and a claw on the other end. It is a lock member in which the part 23 is formed. Two
4 is an unlocking piece fixed to the rod 14, 25 is a landing door 3
An unlocking hole, which is opened in the, and 26 is an unlocking key used when manually unlocking.

Next, the operation of this conventional device will be described. When the landing door 3 is closed, as shown in FIG.
The claw portion 23 is engaged with the engaging portion 21. Basket 4 is landing 1
When the car door 5 is stopped and starts to open the car door 5, the door opening / closing device (not shown) of the car 4 causes the fixed engagement plate 10 and the movable engagement plate 11 to move.
The movable engagement plate 11 is pulled toward the fixed engagement plate 10 in order to pinch. As a result, the link 13 becomes the shaft 13
Since the lock member 22 rotates counterclockwise about the shaft 22a via the rod 14 by rotating clockwise about a, the claw portion 23 and the engaging portion 21 are disengaged from each other. Then, the landing door 3 opens with the car door 5. When closing, the operation is the reverse of the above.

Next, when opening the hall door 3 from the hall 1 at the time of maintenance and inspection or in an emergency, the unlocking key 26 is inserted into the unlocking hole 25 of the hall door 3 from the hall 1 and the unlocking piece 24 is pushed up. . Thereby, the lock member 22 is rotated counterclockwise via the rod 14, the engagement between the claw portion 23 and the engagement portion 21 is released, and the hall door 3 is opened.

However, in this conventional device, since the unlocking hole 25 has to be formed in the hall door 3, there is a problem that not only the manufacturing cost of the hall door 3 is expensive but also the design is not preferable. In addition, the unlocking hole 25 is the landing door 3
Since it is arranged at the upper part of, the operator unlocks the hall door 3 in an unstable posture to open the hall door 3. Therefore, when the car 4 is not stopped at the hall 1, the operator may accidentally fall into the hoistway.

Therefore, in order to solve the above problems,
Utilizing the gap between the side of the landing frame 3 and the landing door 3,
A device for unlocking the landing door 3 has been considered. This device will be described with reference to the drawings. 10 is a view corresponding to FIG. 7, and FIG. 11 is a cross-sectional view taken along line CC of FIG.

In the figure, reference numeral 2a is a side frame of the three-way landing frame 2, and a gap 30 with the landing door 3 is generally 6 mm or less. Reference numeral 31 denotes an unlocking piece pivotally attached to the hall door 3 by a shaft 31a, one end of which is bent to face the opening direction end surface 3a of the hall door 3 to form an operation portion 31b.
The operation portion 31b reaches the vicinity of the side frame 2a beyond the gap 30. The other end reaches the lower end of the rod 14. 32 shows the unlocking piece 31 around the shaft 31a.
A tension spring that urges clockwise 0, 33 is an unlocking piece 3
1 is a stopper that regulates the clockwise rotation amount of 1. The same reference numerals as those in FIGS. 6 and 7 indicate the same elements.

When the unlocking operation of this conventional device is performed, the unlocking key 26 is inserted from the hall 1 into the gap 30 and the operating portion 31 is operated.
b is pushed down to rotate the unlocking piece 31 counterclockwise in FIG. 10 about the shaft 31a. As a result, the rod 14 is pushed up, and the engagement between the claw portion 23 and the engaging portion 21 is released. With this conventional device, it is not necessary to provide an unlocking hole in the hall door 3, so that the manufacturing cost of the hall door 3 is not increased and the design is not damaged. Further, since the unlocking position is lower than that in the case of FIG. 7, the unlocking operation can be performed in a stable posture.

[0011]

However, in the above-mentioned conventional device, since the operating portion 31b reaches the gap 30, the door is unlocked when a rod-shaped object is inserted into the gap 30 by mischief. There was a possibility that it would end up. The present invention has been made to solve this problem, and an object thereof is to provide a manual unlocking device for an elevator door in which the door cannot be unlocked easily by mischief.

[0012]

According to the present invention, the operating portion of the unlocking piece is constructed so as not to reach the gap, and the unlocking piece is slid by using the L-shaped unlocking key. The door is unlocked by sliding the one piece.

[0013]

【Example】

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view corresponding to FIG. 7, FIG. 2 is a sectional view taken along the line DD of FIG. 1, and FIG. 3 is an operation explanatory view of the present embodiment. In the figure, reference numeral 40 denotes an unlocking piece having one end penetrating the fixed engagement plate 10 and pivotally attached to the movable engagement plate 11, and the other end bent to be opposed to the opening direction end face 3a of the hall door 3 and an operation piece. 40 a is formed, and this operation piece 40 a is at a position retracted from the surface 3 b of the hall door 3, and does not reach the gap 30. The operation piece 40a has an operation portion 40b extended upward. Reference numeral 40c is a guide hole for guiding the movement of the unlocking piece 40 in the left-right direction in FIG. 1, 41 is a guide bolt that penetrates the guide hole 40c and is planted in the landing door 3, and 42 is a tip portion bent at a right angle. The unlocking key is formed by forming the unlocking side 42a.

When performing the unlocking operation in the apparatus of this embodiment, the unlocking side 42a is located at a position above the operating piece 40a.
The unlocking key 42 is inserted into the gap 30 in the state of standing. Next, the unlocking side 42a is rotated 90 degrees in the X direction of FIG. 3, and the unlocking key 42 is lowered. When the tip of the unlocking side 42a hits the unlocking piece 40 (two-dot chain line in FIG. 3), the unlocking side 4
2a is pushed in the Y direction of FIG. 3 (the opening direction of the hall door 3). As a result, the unlocking piece 40 moves to the left in FIG. 1, and accordingly, the movable engagement plate 11 also moves to the left, pushing up the rod 14 via the link 13 to unlock.

As described above, according to this embodiment, since the operation piece 40a of the unlocking piece 40 does not reach the gap 30, even if a rod-shaped piece is inserted into the gap 30 by mischief,
The door will never be unlocked. Since the present embodiment has the operation portion 40b extended above the operation piece 40a, the unlocking key 42 is inserted into the gap 30 from a position above the operation piece 40a. If an operating section is provided below 40a as well, the unlocking key 42 is operated by the operating piece 40a.
The door can be unlocked by inserting it into the gap 30 from any position above and below.

Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, instead of the guide bolt 41 and the guide hole 40c of the above embodiment, the opening direction end face 3a of the hall door 3 is used.
A guide bolt 43 is planted in the middle of the operation piece 40a in the vertical direction, and is larger than the bolt portion of the guide bolt 43.
A guide hole 41d smaller than the bolt head is provided. The unlocking side 42b of the unlocking key 42 is shorter than the unlocking side 42a.

In the unlocking operation in this embodiment, the operation piece 40 is used.
From the position above or below a, the unlocking key 42 is inserted into the gap 30 with the unlocking side 42b standing up or down. Next, the unlocking side 42b is rotated until it becomes horizontal, and in that state, the unlocking key 42 is moved downward or upward, and when the unlocking side 42b hits the guide bolt 43, the unlocking key 42 is moved in the Y direction. Push. As a result, the unlocking piece 40 moves to the left in FIG. 1 similarly to the above, and the unlocking operation is performed.

In this embodiment, the guide bolt 43 is the unlocking piece 4
It not only guides the movement of 0, but also serves as a stopper when the unlocking side 42b moves up and down, so that it is not necessary to provide the operation portion 40b as in the above-described embodiment. Further, when the unlocking key 42 is inserted into the gap 30, it can be inserted from either the upper side or the lower side of the unlocking piece 40. Also in this embodiment, if the operation piece 40a is provided with the operation portion 40b and the unlocking side 42b has a length that reaches the unlocking piece 40 similarly to the unlocking side 42a, the same operation as in the above-described embodiment is performed. Can be done.

In each of the above embodiments, the rod 14 is moved through the movable engaging plate 11 and the link 13 by the movement of the unlocking piece 40.
The movable engaging plate 11 as shown in FIG.
In addition to the link 13 and the link 13, a bell crank 51 pivotally attached to the hall door 3 by a shaft 50 may be provided. Further, in each of the above-described embodiments, a device using the fixed engagement plate 10 and the movable engagement plate 11 is shown as the landing side door engagement device, but the invention is not limited to this, and for example, fixed and movable rollers. The same can be applied to the case of using the above and the door engaging device in which the engaging plate and the roller are combined.

Furthermore, in each of the above-mentioned embodiments, a door with a central opening of two doors has been described, but the invention can be similarly applied to a door with a central opening of four doors or more, as well as to a single opening door. Can be carried out. 1 for a single door
In the case of a single door, it may be considered that there is only the left door in FIG. Further, in the case of a two-door door, a lock device is usually provided on the high-speed side door, so in FIG.
Considering as a high-speed landing door and the side frame 2a of the three-way landing frame as a low-speed landing door, it is exactly the same as the above-mentioned embodiment. That is, the unlocking key 42 is only inserted into the gap between the high speed landing door and the low speed landing door, and the outside is exactly the same.

[0021]

As described above, according to the present invention,
Since it is not necessary to provide an unlocking hole in the hall door, the hall door manufacturing cost is not increased and the design of the hall door is not damaged. Moreover, since the installation position of the unlocking piece can be set to a relatively low position, the operator can perform the unlocking operation in a stable posture. Furthermore, since the operation piece of the unlocking piece does not reach the gap between the side frame of the three-way landing frame and the landing door, there is no fear that the unlocking operation is performed by mischief.

[Brief description of drawings]

FIG. 1 is an overall schematic view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line DD of FIG.

FIG. 3 is an operation explanatory diagram of an embodiment of the present invention.

FIG. 4 is a view showing another embodiment of the present invention.

FIG. 5 is a view showing still another embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a main part of a conventional elevator door.

FIG. 7 is a view of a conventional landing door viewed from the hoistway side.

8 is an AA end view of FIG. 7. FIG.

9 is an end view taken along the line BB of FIG. 7. FIG.

FIG. 10 is a view of another conventional landing door viewed from the hoistway side.

11 is a cross-sectional view taken along line CC of FIG.

[Explanation of symbols]

 2 three-way frame of landing 2a side frame of three-way frame of landing 3 landing door 3a end face in the opening direction of landing door 10 fixed engaging plate 11 movable engaging plate 14 rod 20 switch box 21 engaging part 22 locking member 23 claw part 24, 31, 40 solution Lock piece 26,42 Unlock key 40a Operation piece 40b Operation section 42a, 42b Unlock side

Claims (1)

[Scope of utility model registration request] 1. A locker that is locked and unlocked in conjunction with the opening and closing operation of a car door of an elevator and is equipped with a locking device that can be unlocked by a manual operation, and is fixed to a landing side. A mating portion, a claw portion which is installed on the landing door side so as to be engageable with the engaging portion, a rod which is connected to the claw portion and which engages and disengages the claw portion and the engaging portion, The surface has an L shape, one of which has an operation piece that faces the opening end surface of the hall door with a gap and is retracted from the surface of the hall door, and the other has a hoistway side of the hall door. And an unlocking piece configured to displace the rod, a tip portion having an L shape, a gap between a side frame of a three-way landing frame and the landing door, or a landing door slower than the landing door and the landing door. It is inserted in the gap with the landing door and can rotate. Is inserted into a gap between the opening end face of the hall door and the operation piece, and the unlocking piece is displaced in the opening direction of the hall door to engage the claw portion and the engaging portion via the rod. An unlocking key for unlocking the elevator door door manual unlocking device.