JPH0136866Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of an elevator door device.

[Conventional technology]

Generally, an elevator landing door is provided with a locking piece that engages a fixed piece fixed to the landing when the door is closed, and also engages with an engagement plate provided on the car door when facing the car door. An engagement device is provided for unlocking the lock piece and driving the car door together. With these devices, when the landing door is fully closed, it is locked by the engagement of the fixed piece and the locking piece, and when the elevator car arrives at the landing, the engagement plate provided on the car door and the landing door are locked. When the car door starts to open, the lock piece is unlocked, and the landing door and the car door are opened and closed together via the engagement device. There is.

However, this type of door device has a problem that the number of parts (fixing piece, locking piece, and engaging device) is large, increasing manufacturing costs.Also, the engaging device is separate from the locking piece, making it difficult to attach to the landing door. Because of this, fine adjustment of the mounting position was required, which resulted in a problem that the installation and maintenance work became complicated.

For this reason, as shown in FIGS. 3 and 4, a drive roller 11 is provided at the pivot point of the L-shaped operating body 10, and a drive roller 11 is provided at the unlocking side 10a extending upward.
An unlocking roller 12 that is substantially the same as 1 is provided to integrate the engaging device to reduce the number of parts, and the engaging device is housed in a hanger case 13 fixed to the wall 1 of the hall that serves as a reference for the installation position. Elevator door devices that do not require adjustment of the installation position have recently been proposed.

This device operates as follows. That is, when the car door faces the landing door 14, the unlocking roller 1
2. The driving roller 11 is arranged between the engagement plates 15 and 16 provided on the car door, and when the car door starts to open, the engagement plate 15 collides with the unlocking roller 12, and the unlocking roller 12 moves to the right. , the actuating body 10 rotates clockwise around the shaft 17, and the actuating body 10
The hook 10a comes off from the fixed piece 18 and unlocks. Next, the engagement plate 15 moves further to the right, and the drive roller 1
1, the unlocking has already been completed, and as the car door moves, that is, the engagement plate 15 moves, the landing door 14 starts to open as the drive roller 11 is pushed. As the car door opens, the distance between the engagement plates 15 and 16 is narrowed by a cam or the like, and the driving roller 11 and the unlocking roller 12 are gripped without any gaps to drive the landing door 14.

[Problem that the invention attempts to solve]

However, in such a device, when the car door and the landing door are interlocked or when the door is completely open, the driving roller and unlocking roller are gripped by the engagement plate without any gaps (they cannot rotate). ), the door opening operation at low speed immediately before landing on the destination floor, the so-called running open operation, cannot be performed smoothly, resulting in extremely poor operating efficiency of the elevator. Furthermore, when the elevator car moves up and down due to people getting on and off when the door is opened, the driving roller and the unlocking roller are rubbed each time and are quickly worn out.

The present invention has been made in view of the above points, and an object of the present invention is to provide an inexpensive elevator door device that has a long life and does not impede operating efficiency.

[Means for solving problems]

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, the same reference numerals as in FIGS. 3 and 4 indicate the same parts, and 21 is guided by a hanging wheel 23 on a rail 22 fixed to a hanger case 13, and at the bottom is an entrance/exit for an elevator. A hanger plate (not shown) for hanging the landing door 14 that opens and closes; 24 is a hanger case cover; the upper part is fixed to the hanger case 13;
It is arranged to cover the front of 3. 25 is a support fastened to the lower part of the hanger plate 21 with a bolt 26 via a spacer 25a; 27 is a T-shaped actuating piece 27a extending vertically; approximately the center thereof is pivoted to the support 25; The operating body has a box 2 fixed to the rail 22 on the horizontal side 27b.
A hook 27c is provided which engages with a fixed piece 29 attached to the lower part of the door 8 to lock the landing door 14 when fully closed. 30 is a protrusion having a short-circuit contact that short-circuits the contact contact 31 when locking and electrically confirms that locking is completed;
is screwed to. 32 is an unlocking roller rotatably provided on the upper part of the operating piece 27a extending in the vertical direction; 33 is an auxiliary roller similarly rotatably provided on the lower part of the operating piece 27a; the outer diameter is, for example, the unlocking roller. It is formed to have approximately the same diameter (not necessarily the same diameter) as the roller. Reference numeral 34 denotes an operating roller rotatably provided at a portion where the operating body 27 is pivotally attached to the support body 25;
Regarding the positional relationship between the operating roller 34 and the auxiliary roller 33, for example, their mounting shafts are provided closer to the protrusion 30 side in the order of the unlocking roller 32, the auxiliary roller 33, and the operating roller 34. Reference numeral 35 denotes a spring installed between a bent portion 27d in which the upper portion of the actuating piece 27a of the actuating member 27a is bent in a right angle direction and a bent portion 25a in which the upper portion of the support body 25 is bent in the right angle direction. 27 in a counterclockwise direction.

Next, the operation of the device of the present invention will be explained.

When the door of the elevator car that is to arrive at a desired floor faces the landing door 14, the unlocking roller 32, the operating roller 34, and the auxiliary roller 33 are arranged between the engagement plates 15 and 16, and the elevator car When the car door starts to open while the car is still in a low speed state (i.e. running open), the engaging plate 15 first opens.
collides with the unlocking roller 32, causing the unlocking roller 32 to move to the right in FIG.
rotates clockwise around the shaft 34a of the actuating roller 34, and the hook 27c of the actuating body 27 comes off from the fixed piece 29, completing unlocking. Next, when the engagement plate 15 moves further to the right, it also comes into contact with the auxiliary roller 33, and as the car door moves, that is, the landing door 14 moves with the movement of the engagement plate 15 and the unlocking roller 32 and the auxiliary roller 3.
It begins to open by pressing 3 at the same time. Then, the engagement plates 15 and 16 accompany the opening operation of the car door.
The distance between the two is narrowed by a cam (not shown), etc.
The engagement plate 16 also contacts the operating roller 34, and the engagement plates 15 and 16 sandwich the unlocking roller 32, the auxiliary roller 33, and the operating roller 34 as a whole, so each roller can rotate freely when the door of the landing is opened. 14 are silently interlocked and driven.

[Effect of idea]

In this way, the actuating roller 3 is attached to the pivot portion of the actuating body 27.
4, an unlocking roller 32 is provided at the top of the actuating piece 27a extending in the vertical direction, and an auxiliary roller 33 is provided at the bottom.
is provided so that when the interval between the engagement plates 15 and 16 is narrowed, each roller is arranged so that only one side of the roller contacts one of the engagement plates, as shown in FIG. 5, and is rotatable. For example, there is no fear that the rollers will wear out not only when the car is running open but also when the car is moved up and down due to passengers getting on and off. Moreover, in this way, when the door 14 of the landing is opened, the driving force can be transmitted by both the unlocking roller 32 and the auxiliary roller 33, so that the unlocking roller 32 and the auxiliary roller 33 at least transmit the driving force to the operating roller 34. It is also economical because smaller rollers can be used.

As described above, according to the present invention, the unlocking roller, auxiliary roller, and actuating roller are attached to the operating body to form an integrated engagement device, which reduces the number of parts and allows for inexpensive manufacturing. In addition, considering the arrangement of the respective rollers, each roller is not gripped by the engagement plate and becomes unable to rotate, so problems regarding elevator operation efficiency and wear can be solved.

[Brief explanation of the drawing]

FIG. 1 is a front view of essential parts showing an embodiment of an elevator door device according to the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a front view of essential parts showing a conventional elevator door device. Figure 4 is - of Figure 3.
The line cross-sectional view and FIG. 5 are explanatory diagrams illustrating the effects of the present invention. 14... Landing door, 15, 16... Engagement plate, 1
8, 29... Fixed piece, 10, 27... Operating body, 1
1, 12, 32, 33, 34...Roller, 27a
...Actuation piece, 10a, 27c...Hook.

Claims (1)

[Scope of Claim for Utility Model Registration] A landing door is locked to a fixed piece of the landing, and when the car door faces the landing door, the lock is unlocked by the opening operation of the car door. and in a device for engaging the landing door and the car door and driving the car in the horizontal direction, a substantially central portion of the vertically extending actuating piece constituting the actuating body is pivotally connected to the landing door; An unlocking roller is rotatably provided at the top of the actuating piece, an auxiliary roller is rotatably provided at the bottom of the actuating piece, and an actuating roller is rotatably provided at the pivot portion of the actuating piece. the locking roller, the auxiliary roller, and the actuating roller. An elevator door device characterized in that each of the rollers is arranged so as to be in contact with each other.