JPH07102954B2 - Unlocking device for elevator doors - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to an elevator door unlocking device, and more particularly, to an elevator door that can be manually opened from the landing side of an elevator when the elevator is out of order or when operation is stopped in an emergency.

[Prior art]

FIGS. 4 and 5 relate to a conventional standard elevator door grip roller type unlocking device with a relatively slow door opening / closing speed, and FIG. 4 shows an elevator door viewed from the car side of the hall door. FIG. 5 is an enlarged front view of a main part of the unlocking device, and FIG. 5 is an enlarged vertical sectional view of the main part of the unlocking device. In the figure, 1 is an entrance / exit of an elevator hall, 2 is a hall door, 3 is a hanger case installed above the entrance 1, 4 is an upper rail fixed to the hanger case 3 as shown in FIG. Is a hanger plate for suspending the landing door 2, and 6 is a suspension vehicle rotatably provided on the hanger plate 5. The landing door 2 is opened / closed by the suspension vehicle 6 being moved by being guided by the upper rail 4 and being moved by being guided by the lower rail (not shown) at the lower end of the landing door 2. 7 is a mounting member 3a on the hanger case 3
It is a fixed piece fixed via the and has a locking claw 7a at its tip. Reference numeral 8 denotes a mounting member fixed to the hanger plate 3 and having a U-shaped cross section.
A lock member 10 is rotatably attached to the pivot shaft 9. Further, one end 10b of the lock member 10 is formed with a claw portion 10a which can be locked with the locking claw 7a of the fixed piece 7, and the other end 10c is provided with a grip plate or the like provided on a car door (not shown). A gripping roller 11 that engages the mating member is provided. A fixed roller 12 is attached to the pivot shaft 9. Reference numeral 13 denotes a bolt screwed into the upper bent portion 10d of the one end portion 10b of the lock member 10, and the tip of the bolt 13 comes into contact with the U-shaped bent portion 8a of the mounting member 8 to lock the lock member.
The rotation of 10 is restricted. Reference numeral 14 denotes an unlocking lever attached to the back side of the hall door 2 by a mounting metal 15. An upper end portion 14a of the unlocking lever 14 is formed into a substantially L shape by bending, and one end portion of the locking member 10 is formed. The lower end portion 14b is arranged corresponding to the lower side of 10b, and the lower end portion 14b is located above a T-shaped keyhole 16 formed by penetrating the hall door 2 and is movable in the vertical direction. . The conventional elevator door unlocking device configured as described above is operated by opening the car door during normal operation. That is, when the car door is opened, the engaging member installed on the car door causes the other end 10c of the lock member 10 provided on the hall door 2 and the gripping roller 11 and the fixed roller 12 provided on the pivot shaft 9 to operate. By engaging and pressing the gripping roller 11 in the door opening direction, the lock member 10 is rotated clockwise about the pivot shaft 9 to lock the lock member 10.
Release the locked state of the claw portion 10a and the locking claw 7a of the fixed piece 7,
The lock member 10 is unlocked, and the hall door 2 is opened following the car door. On the other hand, when the elevator is out of order or is stopped during an emergency, the hall door can be manually unlocked from the hall side. In this case, a special tool (not shown) is inserted through the keyhole 16 provided above the front of the landing door 2, and the lower end portion 14b of the unlocking lever 14 is pushed upward by the tip of this tool to form an L-shaped tip. Part 1
The landing door 2 can be manually opened by rotating the lock member 10 around the pivot shaft 9 in the clockwise direction to unlock the lock member 4a. In addition, a model in which the opening and closing speed of the elevator door is fast has been developed along with the speeding up of the elevator. For example, FIGS. 6 and 7 show an elevator door unlocking device of this type disclosed in Japanese Utility Model Laid-Open No. Sho 63-178283. In the figure, the same parts as those of the conventional example shown in FIGS. 4 and 5 are designated by the same reference numerals, and the description thereof will be omitted. Reference numeral 17 denotes a T-shaped abutment member rotatably mounted on the landing door 2 about a pivot portion 17a. The abutment member 17 has an unlocking gripping roller 18a at its lower end. ing. Reference numeral 18b is a fixed roller arranged in parallel with the gripping roller 18a. Reference numeral 19 is a pull rod connecting the end of the lock member 10 and the contact member 17, 20 is a push-up rod, and the push-up rod 20 is movable around the contact member 17 and the pivot portion 21a. Is connected to the rear end portion 21b of the unlocking lever 21 installed in the. The unlocking lever 21 has a distal end portion 21c formed with a bent portion 21d extending in a substantially L-shape along the edge of the hall door 2. The bent portion 2c
1d is a keyhole 22 formed in a three-way frame 22 provided at the entrance / exit 1 of the hall
It is designed to be operated by a special tool (not shown) inserted in a. Reference numeral 23 is a stopper that restricts the rotation of the unlocking lever 21. The elevator door unlocking device of the conventional example is configured as described above, the lock member 10 and the contact member 17 is a pull rod 19, and the contact member 17 and the unlocking lever 21 are push-up rods. The link mechanism is connected by 20 to constitute a link mechanism, and the contact member 17 of the link mechanism is operated by operating the unlocking lever 21 with a special tool having a keyhole 22a. Therefore, similar to the above-described embodiment, the unlocking operation can be manually performed from the hall side of the elevator.

[Problems to be Solved by the Invention]

According to the conventional unlocking device for the elevator door configured as described above, when manually unlocking the elevator at the time of suspension of elevator operation from the elevator hall side, according to the former conventional example, the front side of the hall door A special tool is inserted through the key hole that is drilled in the door to unlock it, and because the key hole is formed in the hall door, the aesthetics are impaired, and we respond to requests for improved design or higher quality hall doors. It is in the present condition that cannot be done. Also, in the latter of the models that have high-speed elevator door opening and closing speeds that support high-speed operation, the key holes are not provided in the landing doors but the key holes are provided in the three-way frame, or the gap between the three-way frame and the landing door is used to unlock Unlock by operating the lever for
The keyhole is concealed so that the hall doors can be upgraded. However, in the latter case, when manually operating the link mechanism composed of the lock member 10, the pull rod 19 and the contact member 17 used in the unlocking device, the unlocking lever is provided via the push-up rod 20. Since it is operated by the link mechanism that is operated by 21, the structure of the whole unlocking device is complicated, the number of parts is large, the device is not necessarily inexpensive in terms of cost, and the impact sound at unlocking becomes loud and the landing There was a problem that different parts corresponding to each were required for models with different entrance widths and entrance heights. The present invention has been made to solve such a problem, has a simple structure and can be realized at low cost, and further, there is no need to provide a keyhole on the front side of a landing door, and a design on the exterior of an elevator door. It is an object of the present invention to provide an unlocking device for an elevator door, which is applicable to a standard grip roller type elevator door having a relatively slow opening / closing speed of a hall door.

[Means for Solving the Problems]

An elevator door unlocking device according to the present invention includes a claw portion that can be engaged with a locking claw of a fixed piece, and a gripping roller that abuts an engaging member on which a car door is installed to open a landing door. In an unlocking device for an elevator door, which has a locking member and is capable of locking and unlocking in response to opening and closing of the car door, in the elevator door using the gap between the three-way frame and the elevator door. An unlocking lever that is directly operated from the hall side is provided, and the unlocking lever and the locking member are connected by a control cable.

[Action]

In this invention, since the unlocking lever can be directly operated from the landing side of the elevator by utilizing the gap between the three-way frame and the landing door, it is not necessary to form a key hole on the front side of the landing door, and the designability is improved. By connecting the unlocking lever and the lock member with a control cable, the engagement between the locking claw of the fixed piece and the claw part of the locking member can be released by operating the unlocking lever. It is possible to open the landing door manually.

【Example】

An embodiment of an unlocking device for an elevator door according to the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention. FIG. 1 is a front view of a main part of a landing door as seen from the car side, and FIG. 2 is a car side showing a state when the landing door is open. Front view of the essential parts seen from
FIG. 3 is a front view of the main parts as seen from the car side showing the state when the hall door is manually unlocked. In the drawings, the same reference numerals as those in FIGS. 4 to 7 indicate only the same portions, and 24 is an extension end 10e extending to the opposite side of the claw portion 10a of the locking member 10 and the rear of the unlocking lever 21. A control cable connected between the end portions 21b.The control cable 24 slides lightly in the outer tube 25 fixed to the landing door by the metal fitting 25a when pulled downward, and when compressed. For example, a thin wire rope or the like is used, which can be flexed with a small load (100 g or less) and is sufficiently durable against repeated flexing. 26 is a mounting plate for installing the unlocking lever 21, and 27 is a bolt for fixing the mounting plate 26 to the landing door 2.
It also acts as a stopper for limiting the rotation of the unlocking lever 21. 28 is a spring for urging the unlocking lever 21 in the clockwise direction, and 29 shown in FIG. 2 is a car door (not shown).
Is a gripping plate which is an engaging member which is installed in and which engages with the gripping roller 11 of the hall door 2. The tip 21c of the unlocking lever 21 is bent along the edge of the hall door 2, and the bent portion 21d is operated by a special tool operated from the gap between the hall door 2 and the three-way frame. It is like this. The structure of the landing door of the embodiment other than that described above is the same as that of the conventional example shown in FIGS. 4 to 7, and the description thereof will be omitted. According to the embodiment of the present invention configured as described above, when the electric door is opened in normal elevator operation, the landing door 2 is opened by the grip plate 29 which is an engaging member provided on the car door as shown in FIG. The gripping roller provided on the lock member 10 of
11 is pressed in the door opening direction, the control cable 24 connected between the locking member 10 and the unlocking lever 21 bends near the upper end of the outer tube 25, and the unlocking lever 21 does not operate but only the locking member 10 operates. It rotates clockwise around the pivot 9, unlocking the locking claws 7a and the claws 10a of the fixed piece 7, unlocking the lock member 10, and the hall door 2 together with the car door. It will be released. On the other hand, when the elevator is at rest, as shown in FIG. 3, the tip of a special tool (not shown) is inserted into the gap between the landing door 2 and the three-way frame of the doorway, and the bent portion 21d of the unlocking lever 21 is moved upward. By pushing up, the unlocking lever 21 becomes
It rotates counterclockwise about a, and the control cable 24 slides in the outer tube 25 and is pulled downward in accordance with this rotation, whereby the lock member 10 is rotated clockwise and the lock member 10 is rotated. The member 10 can be unlocked and the hall door 2 can be manually opened.

【The invention's effect】

As described above, according to the elevator door unlocking device of the present invention, since the unlocking lever can be operated by utilizing the gap between the hall door and the three-way frame, the lock member can be unlocked. It is not necessary to form a keyhole in the three-sided frame, and it is possible to provide a landing door without a keyhole and excellent in design. Also, since a bendable control cable is used instead of the conventional link mechanism, it can be applied to elevator doors used in models with different elevator entrance widths and entrance heights simply by adjusting the control cable, as well as the unlocking lever. Since the operation can be performed at a fixed position and the same unlocking lever can be used at all times, the cost can be reduced in combination with the high productivity and the simple structure. In addition, since the control cable that is thin and low-cost can be used, the lock member and the unlocking lever can be simply connected to improve workability, and the lock member causes serration due to a sliding loss error. It never locks.
Furthermore, since the control cable is connected, the impact sound generated when the door is opened and closed is less likely to occur.

[Brief description of drawings]

FIG. 1 is an elevator door unlocking device showing an embodiment of the present invention, and is a front view of a main part of a landing door viewed from a car side, and FIG. 2 is a view showing a state when the landing door is opened. Front view,
FIG. 3 is a front view of the main part of the landing door when it is manually unlocked, as viewed from the car side, and FIGS. 4 and 5 are the main parts of a conventional grip-roller-type elevator door unlocking device. Enlarged front view and principal enlarged cross-sectional view, FIG. 6 and FIG.
FIG. 1 is a front view of a main part and an enlarged sectional view of the main part showing another different unlocking device for an elevator door of a conventional example. 1 …… Elevator hall entrance / exit, 2 …… Hall door, 7 ……
Fixed piece, 7a ... Locking claw, 9 ... Pivot shaft, 10 ... Lock member,
11 …… Grip roller, 21 …… Unlocking lever, 24 …… Control cable, 25 …… Outer tube. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A locking member having a locking claw of a fixed piece and a claw capable of locking, and a gripping roller for contacting an engaging member installed on a car door to release the landing door. In an elevator door unlocking device capable of locking and unlocking in response to opening and closing of the car door, the elevator door is operated directly from the elevator hall side by utilizing the gap between the hall door and the three-way frame. An unlocking device for an elevator door, wherein a rotatable unlocking lever is provided, and the unlocking lever and the unlocking member are connected by a control cable having an outer tube.