JPH03297786A - Cage door device for elevator - Google Patents

Abstract

PURPOSE:To perform gentle high speed opening and closing through reduction of swing of a cage door by securing a magnetic conductor on the secondary side to a door pocket part, locating a coil on the primary side to the cage door, and positioning the working point of a drive force in a spot near the center of gravity of the cage door. CONSTITUTION:The ends on the one side of a magnetic conductor 11 on the secondary side and a linear encoder 26 are securely inserted in the back of an entrance pillar 22 and the ends on the other side thereof are secured to a wall 23. A coil 12 on the primary side positioned facing the conductor 11 is secured to the end part on the door pocket part side of a cage door 2A, and connected to a door control device 13 through a moving cable 30. Sliders 32 mounted on the lower end s of cage doors 2A and 2B are guided by a sill 31. Thereby, the working point of a drive force on the cage doors 2A and 2B is easily positioned in a spot near the center of gravity point of the cage door, and even when the cage doors 2A and 2B are opened and closed at a high speed, the generation of swing is reduced and gentle opening and closing are practicable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a car door device for opening and closing an elevator car entrance.

[Prior Art] Fig. 7 and Fig. 8 are diagrams showing a conventional elevator car door device disclosed in, for example, Japanese Unexamined Patent Publication No. 62-56285, and Fig. 7 is a front view as seen from the landing side. Figure 8 is the 7th
FIG. 3 is a right side view of the figure.

In the figure, (1) is the elevator car, (2A) (2
B) A car door that opens and closes the entrance to the car (1), (3)
A door hanger is fixed to the upper end of the elevator door (2A) (2B), and an upper roller (3a) and a lower roller (3b) are attached thereto. (4) is a door rail that is fixed to the car (1) and guides the upper and lower rollers (3a), (6) is a door rail that is installed on the car (1) and guides the upper and lower rollers (3a);
7) is an endlessly wrapped pulley, (8) is a pulley (
6) is installed coaxially with the encoder that detects the rotation angle of the pulley (6), that is, the position of the car door (2A) (2B), and (9) is the door hanger (3) whose lower end is the car door (2B).
A rope holder (10) is also fixed to the door hanger (3) of the car door (2A) and holds the lower side of the interlocking lobe (7), (11) is the secondary side magnetic conductor of the linear motor consisting of a permanent magnet fixed to the bracket (10) and arranged horizontally, (lla) is its iron core, and (12) is the primary side coil as well. ) is fixed to the mounting bracket (
The coil (12a) is attached to the iron core (12b) attached to the
The guide rollers (12d) around which c) are wound and supported by the mounting bracket (12a) are in contact with the secondary magnetic conductor (11), and several guide rollers (12d) are arranged along the moving direction of the car door (2). has been done. (13) is the encoder (8) and the primary coil (12).
) is a door control device connected to the coil (12c).

A conventional elevator car door device is constructed as described above, and when a door opening command is issued while the car doors (2A) (2B) are in the closed state as shown in FIG. 7, the door control device (
13) sequentially controls the coil (12c). Now, a magnetic force acts between the primary coil (12) and the secondary magnetic conductor (11), driving the car door (2A) to the right, and the movement is controlled via the interlocking rope (7). The signal is transmitted to the car door (2B), and the car door (2B) is driven to the left. During this time, the upper and lower rollers (3a) (3b) are
) to guide the movement of the car doors (2A) (2B). The moving position of the car door (two people) is detected by an encoder (8), and the car door is controlled to have a speed corresponding to the position, and the door opens to the position shown by the chain line. Note that the door control device (13) is controlled by a well-known inverter control or the like.

[Problem to be solved by the invention 1] In the conventional elevator car door device as described above,
Since the driving force is provided above the car door (2A) (2B) or by a near motor and is transmitted via the interlocking rope (7), there are various problems as follows.

■ The point of action of the driving force that moves the car door (2A) (2B) is the connection point between the rope holder (9) and the bracket (lO) and the interlocking rope (7), and this position is ) (Because it is above the center of gravity of 2Bl,
During opening and closing, the car door (2A) (2B>) shakes, and the reaction force received by the lower roller (3b) is large (and the contact noise with the door rail (4) is loud. In order to reduce this noise to an acceptable level. In this case, it is necessary to reduce the opening/closing speed, which reduces the elevator's transportation capacity.

■ Drive force transmission mechanisms such as pulleys (5) (6) and interlocking ropes (7) must be placed at the top of the car (1), so when the car (1) reaches the top floor, the car (1) ) The clearance from the top of the elevator car (1) to the hoistway ceiling is small (this is not desirable from a safety standpoint as it may impede people getting on top of the car (1) during maintenance. (dimension to the ceiling) must be increased.

■ Since the tension of the interlocking lobe (7) must always be maintained appropriately, maintenance is time-consuming.

This invention was made to solve the above-mentioned problems, and it reduces the shaking of the car door and allows it to open and close quietly even at high speeds.
An object of the present invention is to provide an elevator car door device which can improve operational accuracy and can be easily installed and inspected.

[Means for Solving the Problems] The elevator car door device according to the first aspect of the present invention fixes the secondary magnetic conductor of the linear motor to the door pocket of the car, and fixes the primary coil to the car door. It was established.

Further, an elevator car door device according to a second aspect of the present invention is obtained by unitizing the door control device, the secondary magnetic conductor, and the linear encoder in the first aspect. Further, in the elevator car door device according to the third invention of the present invention, in the first invention, one end of the secondary magnetic conductor is placed on the entrance/exit post, the other end is placed on the sleeve wall or in the vicinity thereof. It is fixed to the installed member.

Further, in the elevator car door device according to the fourth invention of the present invention, in the first invention, an inspection hole that opens into the car is provided at a position corresponding to the door control device in the sleeve wall. Since it is equipped with a door, the door control device can be operated by opening the door.

[Function] In the first aspect of the present invention, since the secondary magnetic conductor is provided in the door pocket of the car and the primary coil is provided in the car door, the point of application of the driving force to the car door is It becomes possible to position it near the center of gravity. Further, there is no need for a drive mechanism for the elevator door on the upper part of the elevator car.

In addition, in the second aspect of the present invention, since the door control device, the secondary magnetic conductor, and the linear encoder are connected to each other and made into a unit, the mutual positional relationship of each device can be maintained accurately, and the mutual wiring work can be performed from now on. etc. are no longer necessary.

Further, in the third aspect of the present invention, since the secondary side magnetic conductor is fixed to the entrance/exit post and the sleeve wall of the car or to the standing member in the vicinity, the gap between the primary side and the secondary side of the linear motor is reduced. Less fluctuation.

Further, in the fourth aspect of the present invention, an inspection port and a door are provided in the sleeve wall at a position corresponding to the door control device.

[Example 1 Figures 1 to 3 are diagrams showing one embodiment of the first to third inventions of the present invention, in which Figure 1 is a front view seen from the landing side, and Figure 2 is a diagram similar to Figure 1. FIG. 3 is a perspective view of the drive unit, and portions similar to those of the conventional device are designated by the same reference numerals.

In the figure, (21) is the floor of the basket (1), and (22) is the floor of the basket (1).
) sleeve wall that is fitted into the back side of the four pillars (22) and forms the door pocket, (24) a side wall that stands on the basket floor (21) and is joined to the sleeve wall (23) on one side, (25) The in-car operation panel has a door control device (13) on the top, and a secondary magnetic conductor (11) and a linear encoder (26) on the back.
) is fixed by the mounting bracket (27). The linear encoder (26) is formed into a rod shape and has a position point (26a) for detecting the position of the car door (2A). Car operation panel (
25), door control device (13), secondary magnetic conductor [11
) and linear encoder (26) form a drive unit (28) as shown in Fig. 3, and the unit (28) is attached to the sleeve wall (29) by mounting brackets (27) (29).
23) and is stored in the door pocket. One end of the secondary magnetic conductor (11) and the linear encoder (26) is inserted and fixed to the back side of the entrance/exit post (22), and the other end is fixed to the sleeve wall (23). The primary coil (I2) facing the secondary magnetic conductor (11) is located at the door (2).
A) is fixed to the door pocket side end and connected to the door control device (13) by a moving cable (30). (31) Sliders (32
) is the threshold to guide you. Similarly, for the car door (2B), the primary coil (12) and the secondary magnetic conductor f
il), a linear encoder (26), etc. are provided.

In the elevator car door device configured as described above, the unit (28) is configured at the factory. Now each device (25) (13) (11) (26) is installed with high precision, the mutual position of the secondary magnetic conductor (11) and linear encoder (26) is maintained accurately, and the manufacturing cost is reduced. Reduced.

The unit (28) was delivered to the site, and the mounting bracket (29) (
27) The secondary magnetic conductor (11) and the linear encoder (26) are fixed to the entrance post (22) and the sleeve wall (23), respectively.

Now the primary coil (12) and the secondary magnetic conductor (11
) The mutual air gap is kept constant, improving the control performance of the linear motor. Also, during maintenance, it is possible to check the above-mentioned gaps by simply checking the gaps between the elevator door (2A) (2B>) and the entrance/exit pillar [22].

Since the primary coil (12) is directly fixed to the door (2A), there is no need for a special bracket for mounting, space can be saved in the front and back directions of the door pocket, and the manufacturing cost can be reduced.

By controlling the primary coil (12), a driving force is generated between the secondary magnetic conductor (11) and the car door (2A
) (2B) opens and closes as described above.

At this time, since the car doors (2A) (2B) are driven at the center of gravity of the cage, there is little shaking of the car doors (2A) (F2B). Also, since the reaction force of the lower roller (3b) is reduced, noise is reduced, making it quiet even when opening and closing at high speed.
0 Be able to operate.

There are no driving force transmission mechanisms such as pulley f5) (6) and interlocking rope (7) installed on the top of the car (1).
The above-mentioned overhead size can be reduced while maintaining safety during maintenance. However, due to circumstances, a linear motor was installed only on one side of the car door (2A) f2B), and a pulley (5) (6), interlocking rope (7), etc. were installed on the top of the car (1) to transmit the drive. Car door (2A'l (
The other linear motor of 2B+ may be omitted.

FIG. 4 is a perspective view showing another embodiment of the drive unit of the present invention, in which the drive unit (28) shown in FIG. 3 is integrated with the sleeve wall (23) and the entrance/exit post (22). (35), and furthermore, the installation work can be made easier.

The in-car operation panel (25) may be installed in a location other than the sleeve wall (23), but in this case, the door control device (13) is equipped with a secondary magnetic conductor (11) and a linear The encoders (26) may be combined to form a unit.

1. Fig. 5 is a view corresponding to Fig. 2 showing another embodiment of the third invention of the present invention, in which the car floor retaining and the hanger case (not shown) in which the door hanger (3) is stored are combined. A connecting member (41) is provided, and a secondary magnetic conductor (
11) and the other end of the linear encoder (26) are fixed, and performs the same function as the case shown in FIG.

FIG. 6 is an enlarged perspective view of the inner sleeve wall of the car showing one embodiment of the invention of the inner box 4 of the present invention, with an opening in the portion of the sleeve wall (23) corresponding to the door control device (13). Inspection port (4)
5), and a door (46) for opening and closing the inspection port (45) is pivotally mounted on the sleeve wall (23).

That is, it is possible to inspect and adjust the door control device (13) while checking the movement of the car door (2B) from inside the car (1). In addition, the door control device (13) originally requires buttons for opening and closing the car doors (2A) (2B) and associated circuits, but in this embodiment, these are connected to the in-car operation panel (25). Since the opening/closing button and the circuit can be used for the same purpose, manufacturing costs can be reduced.

In each of the above embodiments, the car doors (2A) (2B) on a flat plate of an ordinary elevator-2 are shown to be driven, but it is also possible to drive a cylindrical car door installed in a cylindrical car. It can also be easily applied as a simplified mechanism.

[Effects of the Invention] As explained above, in the first aspect of the present invention, the secondary magnetic conductor of the linear motor is fixed to the door pocket of the car, and the primary coil is provided in the car door, so that the drive to the car door is It is now possible to locate the point of force application near the center of gravity of the car door, which reduces the shaking of the car door and enables quiet opening and closing even at high speeds.It also reduces overhead dimensions while maintaining safety during maintenance. It has the effect of making it smaller.

In addition, in the second invention of the present invention, the door control device, the secondary side magnetic conductor, and the linear encoder are connected to each other to form a unit, so the mutual positional relationship of each device is maintained accurately, and it can be easily installed at the installation site. This eliminates the need for adjustment work and has the effect of making installation work easier.

3 In addition, in the third aspect of the present invention, since the secondary side magnetic conductor is fixed to the entrance/exit post and the sleeve wall of the car or the standing member in the vicinity, the gap between the primary side and the secondary side of the linear motor is reduced. This has the effect of reducing fluctuations in the linear motor and improving the performance of the linear motor.

In addition, in the fourth aspect of the present invention, since an inspection port and a door are provided in the sleeve wall at a position corresponding to the door control device, the door control device can be operated by opening the door, and the car door can be moved from inside the car. This has the effect of allowing you to inspect and adjust the door control device while checking.

[Brief explanation of drawings]

FIGS. 1 to 3 are views showing an embodiment of an elevator car door device according to the first to third aspects of the present invention.
The figure is a front view seen from the landing side, and Figure 2 is II- of Figure 1.
3 is a perspective view of the drive unit, FIG. 4 is a view corresponding to FIG. 3 showing another embodiment of the drive unit of the present invention, and FIG. 5 is a diagram showing another embodiment of the drive unit of the present invention. Fig. 6 is an enlarged perspective view of the inner sleeve wall of the car showing an embodiment of the fourth invention of the present invention, and Figs. 7 and 48 are views of the conventional car. A diagram showing an elevator car door device,
FIG. 7 is a front view as seen from the landing side, and FIG. 8 is a right side view of FIG. 7. In the diagram, (1) basket, (2A) (2B) basket door,
(11) is the secondary magnetic conductor of the linear motor, (12) is the left primary coil, (I3) is the door control device, (22)
is the doorway pillar, (23) is the sleeve wall, (25) is the in-car operation panel, (26) is the linear encoder, (28) (35)
is a drive unit, (41) is an upright member (connecting member),
(45) is an inspection port, and (46) is a door. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 3 Figure JP-A-3-297786 (8) Figure

Claims (4)

[Claims] (1) A car door is provided that opens and closes the car entrance and is housed in a door pocket formed by a sleeve wall. An elevator car door device driven by a linear motor controlled by an elevator car door device, characterized in that the secondary magnetic conductor is fixed to the door pocket, and the primary coil is provided in the car door. (2) A linear encoder is provided along the moving direction of the car door to detect the position of the car door and sends the detected position to the door control device, and the door control device, the secondary magnetic conductor, and the linear encoder are connected to each other. An elevator car door device according to claim 1, which is combined to form a unit. (3) Claim 1, in which one end of the secondary magnetic conductor is fixed to a doorway pillar forming a car doorway, and the other end is fixed to a sleeve wall or a member erected near the sleeve wall. elevator car door device. (4) The elevator according to claim 1, wherein an inspection port opening into the car is provided at a position corresponding to the door control device on the sleeve wall, and a door for opening and closing the door is pivotally mounted on the sleeve wall. car door device.