JPH0331187A - Unlocking device for elevator door - Google Patents

Abstract

PURPOSE:To prevent an excessive tensile force from being applied to a control cable connecting a lock member and an unlocking lever by providing stoppers restricting the rotating ranges of the lock member and the unlocking lever. CONSTITUTION:An unlocking lever 21 is directly operated from the hall side of an elevator by utilizing a gap between a three-way frame and a hall door 2, a lock member 10 is released from a fixing piece 7 via a control cable 24, and the hall door 2 is manually opened. The rotating ranges of the lock member 10 and the unlocking lever 21 are restricted by stoppers 30, 28a and 28b respectively. No excessive tensile force is applied to the control cable 24, and the extension or cutoff of the control cable 24 can be prevented.

Description

[Detailed description of the invention] [Industrial application field]

This invention relates to a dish-beta door unlocking device.
Especially when the elevator is out of operation due to failure or emergency, the elevator door can be opened manually from the landing side of the elevator.

[Conventional technology]

Figures 3 and 4 show a conventional grip roller-type unlocking device for a standard elevator door, which has a relatively slow door opening/closing speed. This is an enlarged front view of the main parts of the unlocking device, and FIG. 4 is an enlarged vertical cross-sectional view of the main parts of the unlocking device. The hanger case installed at the top, 4 is the upper rail fixed to the hanger case 3 as shown in FIG. 4, 5 is the hanger play 1 for hanging the landing door 2, and 6 is the bunker frame 1. 5 is a hanging wheel rotatably provided at the landing door 2. The hanging wheel 6 of the landing door 2 moves while being guided by the upper rail 4, and is guided by a lower rail (not shown) at the lower end of the landing door 2. 7 is a fixed piece fixed to the hanger case 3 via a mounting member 3a, and has a locking claw 7a at its tip. 8ζ and the above hanger plays 1 and 3.
This mounting member 8 has a U-shaped cross section and is fixed to the mounting member 8.
A pivot shaft 9 is implanted in the pivot shaft 9, and a locking member 10 is rotatably attached to the pivot shaft 9. and the locking member 10
One end 10b is formed with a claw portion 10tI that can be locked with the locking claw 7a of the fixing piece 7, and the other end 10C is provided with a gripper 10tI provided on the car door (not shown). A hook roller 1 which engages with the engagement member is provided. 12 is a fixed row attached to the pivot shaft 9. 1
3 is one end portion 1.3 of the locking member 10. With the bolt screwed into the upper bent portion 10d of Ob, the tip of the bolt 13 of Ob comes into contact with the U-shaped bent portion 8a of the mounting member 8.
Rotation of the lock member 10 is restricted. 14ζ is an unlocking bar attached to the back side of the landing door 2 with a fitting 15, and the upper end of this unlocking lever 14], 4 a is,
The locking member 10 has one end 1. bent into an L-shape. The lower end portion 14b is disposed corresponding to the lower side of the ob, and the lower end portion 14b is located above the letter-shaped keyhole 16 formed through the landing door 2, making it possible to move in the vertical direction. . The conventional elevator door unlocking device configured as described above is operated by opening the elevator door during normal operation. That is, when the engaging member installed on the car door opens the car door, the other end 10 of the locking member 10 provided on the landing door 2
c and the gripping roller 11 and fixed roller 12 provided on the pivot shaft 9, and by pressing the gripping roller 11 in the door opening direction, the locking member 10 is rotated clockwise around the pivot shaft 9. The claw portion 1 of the locking member 10. The locked state between Oa and the locking claw 17a of the fixed piece 7 is released (7, the locking member 10 is unlocked, and the hall door 2 is opened following the cage door. On the other hand, if there is a malfunction in the elevator operation or When the hall door is closed due to an emergency, etc., the hall door can be manually unlocked from the hall side. In this case, a special tool (not shown) is inserted 17 into the keyhole 16 provided at the upper front of the hall door 2. , by pushing up the lower end 14b of the unlocking lever 14 with the tip of this tool and rotating the locking member 10 clockwise around the pivot shaft 9 with the L-shaped tip 14a to unlock it. , the landing door 2 can be opened manually. In addition, as the speed of the L and Beta has increased, models with faster opening and closing speeds for the door have been developed. For example, as shown in Figure 5. , Fig. 6 is a type of elevator door unlocking device disclosed in Japanese Utility Model Application No. 63-178283. In the figure, the same parts as the conventional example of Figs. 3 and 4 are designated by the same reference numerals. 17 is a letter-shaped abutting member installed on the landing door 2 so as to be rotatable around the pivot joint 17a, and the abutting member 17 of B is disassembled at the lower end. A lock gripping roller 8a is provided. 18b is a fixed roller arranged in parallel with the gripping rollers 1 and 8a. 19 is a roller between the end of the locking member 10 and the abutting member 17. 20 is a push-up bar, and this push-up bar 20 tel: An unlocking lever 2 rotatably installed on the landing door 2 around the abutting member 17 and +Z=Vt portion 21.n. ] Rear end 2
1. It is connected between b. Above unlocking lever 2
1 is formed with a bent part 21d that extends in an oval shape along the edge of the landing door 2, and this bent part 21d is formed in the three-sided frame 22 provided at the entrance/exit 1 of the landing. keyhole 22
It is operated by a special tool (not shown) inserted into a. 23 (This is a stopper that restricts the rotation of the unlocking bar 21. The conventional elevator door unlocking device is constructed as described above, and the locking member 10 and the abutting member 17 are connected to each other. is the tension rod 19
Also, the contact member 17 and the unlocking lever 21 are connected to the push-up bar 2.
0 to form a link mechanism, and the contact member 17 of this link mechanism is unlocked by a specially shaped tool inserted through the keyhole 22a, and is activated by operating the bar 21. There is. Therefore, similarly to the above-described embodiment, the unlocking operation can be performed manually from the landing side of the Nirebake.

[Problems to be Solved by the Invention] If the conventional elevator door unlocking device configured as described above is used, the L/beta can be opened from the elevator hall side during the suspension of operation. In the case of manual unlocking, according to the former conventional example, a special tool is inserted through a keyhole drilled in the front side of the landing door to unlock it, and the keyhole is formed in the landing door. The current situation is that the aesthetic appearance is impaired and it is not possible to meet the demands for improved design or higher quality landing doors. In addition, in the case of the latter model, which is compatible with high-speed elevator doors and has fast opening/closing speed, the keyhole is not provided in the landing door, but the keyhole is installed in the three-sided frame, or the door is unlocked by using the gap between the three-sided frame and the landing door. The lock can be unlocked by operating the lever, and the keyhole is concealed, making it compatible with the increasingly high-class landing doors. However, in the latter case, when manually operating the link mechanism consisting of the locking member 10, the tension bar 19, and the abutment member 17 used in the unlocking device, the unlocking lever is moved through the push-up bar 20. Since the unlocking device is operated by a link mechanism operated by 21-C, the overall structure of the unlocking device is complex and has a large number of parts.It is not necessarily an inexpensive device in terms of cost, and the impact noise when unlocking is loud. In addition, there were other problems such as the need for different parts for models with different entrance/exit widths and entrance/exit heights. This invention was made in order to solve the problems mentioned above.It has a simple structure and can be realized at low cost.Moreover, there is no need to provide a keyhole on the front side of the landing door, and it is possible to solve the problem of It is an object of the present invention to provide an elevator door unlocking device that improves the appearance design and is particularly applicable to a standard grip roller type elevator door whose opening/closing speed of the hall door is relatively slow. [Means for Solving the Problems] The elevator door unlocking device according to the present invention has a claw portion that can engage with a locking claw of a fixed piece, and a locking member of a car door that is installed in the car door. In the elevator door unlocking device, which has a locking member equipped with a grip roller for opening the door, and is capable of locking and unlocking in response to opening and closing of the door, the landing door has a three-sided frame and a landing door. An unlocking lever that is operated directly from the elevator landing side is provided using the gap between the door and the door, and this unlocking lever and the above-mentioned lock member are connected by a controller 1 to a roll cable, and the above-mentioned lock The rotation ranges of the member and the unlocking lever are respectively regulated by stoppers.

[Function] In the invention of Party B, the unlocking lever can be operated directly from the landing side of the first nonovator by utilizing the gap between the three-sided frame and the landing door, thereby eliminating the need to drill a keyhole in the front side of the landing door. Moreover, since the unlocking lever and the locking member are connected by a short rope cable, the locking claw of the fixed piece and the claw of the locking member can be connected by operating the unlocking lever. The engagement can be released and the landing door can be opened manually. In addition, since the rotation range of the locking member and the unlocking lever that connect the control cable are regulated by stoppers, excessive tension is not applied to the control cable, and the control cable is prevented from being stretched or cut.

【Example】

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an elevator door unlocking device of the present invention will be described with reference to the drawings. 1 and 2 show one embodiment of the present invention, FIG. 1 is a front view of the main part of the landing door seen from the side, and FIG. 2 is a sectional view taken along line II-II in FIG. 1. It is. In the figure, the same reference numerals as in FIGS. 3 to 6 indicate the same parts, and 24 denotes an extension end 10e extending to the opposite side of the claw part 10a of the locking member 10, and a rear end of the unlocking lever 21. Part 2
The control cable 1b is fixedly or rotatably connected with some slack between the control cables 1b and 2b, and the control cable 24 is connected to the outer tube fixed to the landing door with a holding metal fitting 25a against downward pulling. 2
5, and a small load (1
For example, a thin wire rope or the like is used, which is bendable at a weight of 00 g or less and has sufficient durability against repeated bending. 26 is a mounting plate for installing the unlocking lever 21, 27 is a bolt for fixing the mounting plate 26 to the landing door 2, and 28a and 28b are made by cutting and raising a part of the mounting plate 26 or forming an L shape. A stopper 29 for limiting the number of times of the unlocking lever 21 to 1 itl, formed by fixing a member;
Reference numeral 30 is a spring that urges the unlocking lever 21 in the clockwise direction, and 30 is a stopper that limits the rotation range of the locking member 10 in the clockwise direction.
It is formed so as to protrude from the upper edge 5a of the. Reference numeral 31 denotes a gripper-1 which is an engaging member that is installed on a car door (not shown) and engages with a gripper roller of the landing door 2. In addition, the tip 21c of the unlocking lever 21 is used for the landing door 2.
The bent portion 21d is bent along the edge of the landing door 2.
It is operated by a special tool 32 which is operated from the gap between the frame 22 and the three-sided frame 22. The structure of the landing door of the embodiment other than the above-mentioned structure is the same as that of the conventional example shown in FIGS. 3 to 6, so the explanation thereof will be omitted. According to the embodiment of the present invention configured as described above, when the electric door is opened during normal elevator operation, the grip plate 31, which is an engaging member provided on the door, is used to open the landing area n2 as shown in FIG. The gripping roller 11 provided on the locking member 10 is pressed in the door opening direction, and the control cable 24 connected between the locking member 10 and the unlocking lever 21 is
The outer tube 25 is deflected near the upper end, and the unlocking lever 21 does not operate and only the locking member 10 is attached to the pivot shaft 9.
The lock member 10 is unlocked by rotating clockwise around , releasing the lock between the locking claw 7a of the fixed piece 7 and the claw portion 10a, and unlocking the locking member 10.
The landing door 2 is opened together with the car door. On the other hand, when the machine L/Beta is out of service, the tip 32a of the special tool 32 is inserted into the gap between the landing door 2 and the three-way frame of the entrance/exit, as shown in FIG.
By pushing up d, the unlocking lever 21 rotates counterclockwise around the pivot portion 21a, and with this rotation, the control cable 24
5 and is pulled downward, the deflection gradually disappears, tension is applied to the cable 24, and the lock member 1 2 10 is rotated clockwise until the lock member 10 comes into contact with the stopper 30. When the unlocking lever 21 comes into contact with the stopper 28b that restricts rotation in the counterclockwise direction, excessive tension is prevented from being applied to the control cable 24.
The landing door 2 can be opened manually by unlocking the lock member 10.

【Effect of the invention】

As explained above, according to the elevator door unlocking device of the present invention, the unlocking lever can be operated using the gap between the landing door and the three-sided frame to unlock the locking member. It is not necessary to form a keyhole in a three-sided frame, and a landing door with an excellent design without a keyhole can be provided. In addition, since a flexible control cable is used in place of the conventional link mechanism, it can be applied to elevator doors that have different entrance widths and entrance heights by simply adjusting the control cable. Since the locking lever can be operated from a fixed position and the same unlocking lever can always be used, productivity is high and the structure is simple, and costs can be reduced. Mata and Conotrol cables allow the use of thin, low-cost cables, making it easier to connect the locking member and unlocking lever, improving work efficiency, and preventing the locking member from warping due to sliding loss errors. It will not become impossible to lock the door. In addition, since the connection structure is made using a control cable, it is difficult to generate impact noises that occur when the door is opened and closed. Furthermore, since the rotational ranges of the locking member and the unlocking lever are regulated by stoppers, it is possible to prevent excessive tension from being applied to the control cable, and to prevent failures due to stretching or cutting.

[Brief explanation of drawings]

Fig. 1 is an elevator door unlocking device showing an embodiment of the present invention, and is a front view of the main part of the landing door seen from the car side, and Fig. 2 is also taken along the If-]I line in Fig. 1. Cross section, 3rd
4 and 4 are an enlarged front view and an enlarged cross-sectional view of the main parts of a conventional grasping roller type elevator door unlocking device, and FIGS. 5 and 6 show other different elevator door unlocking devices of the conventional example. FIG. 2 is a front view and an enlarged cross-sectional view of the main parts of the unlocking device. 1. Entrance/exit of elevator landing, 2--landing door, 7. Fixed piece, 7a...Latching claw, 9. Pivot shaft, 10. Locking member, 11.
Lock roller, 21 Unlock bar 24, control cable, 25 Outer tube, 28 a, 2
8 b-X I-Brim, 30-S I-Brim, 32-Special tool. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] The locking member includes a locking pawl of the fixed piece, a pawl portion that can be locked, and a gripping roller that comes into contact with an engaging member installed on the car door to open the landing door, and In an elevator door unlocking device that can be locked and unlocked in response to opening and closing, the above-mentioned landing door has a rotatable solution that can be operated directly from the landing side of the elevator by utilizing the gap between the landing door and the three-sided frame. A locking lever is provided, the unlocking lever and the locking member are connected via a control cable, and the rotation ranges of the locking member and the unlocking lever are restricted by stoppers, respectively. Features an elevator door unlocking device.