JPH03293282A - Driving device for elevator door - Google Patents

Abstract

PURPOSE:To prevent variation of magnetic resistance and improve reliability of control for driving a cage door by providing guide rollers to adjustably maintain the clearance between the coil and the movable body of a linear motor, and a buffer part to cushion vibration transmitted to the movable body. CONSTITUTION:The device is constituted out of a guide roller 25 maintaining clearance between a movable body 22 and a coil 21 in a prescribed constant value, a guide roller 27 pinchedly supporting the movable body 22 between itself and the guide roller 25, and a buffer part to cushion vibration transmitted to a bracket 10 at driving a cage door 26 and generated in the nearly square directon of the moving direction of movable body 22. Consequently, vibration of the elevator cage in the entrance direction, generated at driving the cage door 2b of the elevator cage 1 and applied to the movable body 22, is cushioned and eliminated with the guide rollers 25, 27. Hereby, clearance between the coil 21 and the movable body 22 in a linear motor is not varied.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for driving the opening and closing of an elevator car door, and particularly relates to an elevator door driving device that uses a linear motor to open and close the door. It is.

[Prior Art] As a conventional elevator door drive device of this type, for example, the technology disclosed in Japanese Patent Application Laid-Open No. 62-56285 can be mentioned.

FIG. 3 is an overall configuration diagram showing a conventional elevator door drive device, and FIG. 4 is a side sectional view of a main part of the conventional elevator door drive device.

In Fig. 3, (1) is an elevator car that moves passengers to the required floor, (2a) and (2b) are car doors that open on both sides attached to the entrance of the car (1), and (3) ) are door hangers attached to the two ends of the car doors (2a) and (2b), respectively. This door hanger (3) is attached to the car door (2).
It is supported by suspending it from a leash.

(4) is a hanger roller pivoted on both ends of the door hanger (4); (5) is a car door (2a) on which the hanger roller (4) is placed in an interlocking state and rolls from side to side;
This is the rail (2b).

(6), (7) are rotatable pulleys attached to both sides of the upper part of the cage (1); (8) are the pulleys (6);
(7) An interlocking rope stretched between the two. (9) has one end connected to the - side line of the interlocking rope (8) stretched between the pulleys (6) and (7), and its lower end connected to the door hanger (3) of the car door (2a). ) is an interlocking piece fixed to the This interlocking piece (9) is connected to the interlocking rope (8).
The movement of the line on the second side is transmitted to the car door (2a).

The upper end of (10) is connected to the lower line of the interlocking rope (8), and the lower end is connected to the door hanger (3) of the car door (2b).
This is a bracket fixed to. This bracket 1-(10
) is for interlocking the interlocking rope (8) and the car door (2b).

(21) is the front car door (2b) of the car (1)
This is the coil of the linear motor installed near the three sides of the motor. This coil (21) forms a magnetic pole that apparently moves in parallel upwards to the left or to the right when the required power is supplied.

(22) is a movable body of a linear motor fixedly supported near the center of the bracket (10), facing the coil (21) with a predetermined gap therebetween. This movable body (22
) is formed by arranging a plurality of magnetic poles of the same sex on the surface facing the coil (21), and the apparent "-" formed by the coil (21) moves horizontally in parallel by being repelled or attracted by the parallel moving magnetic poles. It is something to do.

(30) is a control unit that supplies the necessary power to the coil (21) of the linear motor to control the movement of the movable body (22).

(31) is an encoder that detects the open/close position of the car door (2b) attached to the pulley (7).

This encoder (31) detects the amount of movement of the interlocking rope (8) that is interlocked with the movement of the car door (2b) as the car position, and outputs it to the door control section (30).

In FIG. 4, (23) is an iron core provided in the coil (21) of the linear motor that converges the magnetic force; (24)
is the iron core of the movable body (22) provided opposite to the iron core (23) of the coil (21).

(25) are guide rollers that abut upper and lower sides of the movable body (22) on which the iron core (24) is provided. This guide roller (25) connects the coil (21) and the movable body (2
2), the coil (21) and the movable body (22)
This is to keep the interval constant.

(26) is a support member having a U-shaped side surface and pivots to support the guide rail (25) with the guide rail (25) facing downwardly.

Next, the operation of the conventional elevator door drive device configured as described above will be explained.

When the elevator car (1) reaches its destination floor, the car door (
When the door opening commands 2a) and (2b) are issued, the door control section (30) supplies the necessary power to the coil (21) of the linear motor to move the movable body (22) to the right.

The movement of the movable body (22) in the right direction is performed by the bracket (1
0) and move the car door (2b) to the right,
The lower line of the interlocking rope (8) is moved to the right and the upper line is moved to the left. As a result, the interlocking piece (9) is moved to the left, and the car doors (2a) and (2b) of the car (1) are simultaneously opened on both sides.

[Problems to be Solved by the Invention] Since the conventional elevator door drive device is configured as described above, the car door (
2b) to the right, apply a force in the opposite direction to the car door (2a) using the interlocking rope (8), and open the car (1).
It was intended to open the entrance and exit of the

However, the car doors (2a) and (2b) are
In order to smoothly open and close the doorway of the car (1),
The car doors (2a) and (2b) are installed approximately perpendicularly to the opening and closing direction of the car doors (2a) and (2b) with a certain amount of clearance. Therefore, the car doors (2a) and (2b) open and close while swinging in the front and rear directions of the entrance and exit of the car (1). The vibration of the car door (2b) causes the movable body (22) to move back and forth in the direction of the coil (21) through the bracket 1-(10). As a result, the movable body (2
2) and the coil (21) changes, which changes the magnetic resistance, impairing the smooth opening and closing of the car doors (2a) and (2b), and potentially reducing the reliability of the control. Ta. In addition, fluctuations in magnetic resistance are caused by the door control unit (
30) greatly fluctuates the supplied current, resulting in a decrease in the efficiency of opening and closing the door, which is uneconomical.

Therefore, an object of the present invention is to provide an elevator door drive device that does not change the magnetic resistance of the drive of a linear motor.

"Means for Solving the Problems" An elevator door drive device according to the present invention includes a coil of a linear motor disposed in an elevator car and a coil of the linear motor disposed facing each other with a predetermined gap therebetween. , a movable body of a linear motor attached to the entrance/exit of the car that drives the car door to open and close; and a movable body of the linear motor that is held in contact with the movable body from both sides to adjust the gap between the coil of the linear motor and the movable body. The car door has a guide roller that can be held in place, and a buffer part that buffers vibrations transmitted to the movable body of the linear motor as the car door is driven.

[Function] In the present invention, the guide rollers of the buffer section are disposed opposite to the coils with a predetermined interval, and sandwich the movable body of the linear motor that drives the elevator car door to open and close from both sides. The gap between the coil and the coil can be maintained constant. Furthermore, the guide roller can adjust the gap between the coil and the movable body by changing its arrangement position.

[Example] The present invention will be explained in detail below.

FIG. 1 is a side sectional view of a main part of an elevator door drive device according to a first embodiment of the present invention. Note that in the drawings, the same reference numerals and symbols as in the conventional example indicate the same or corresponding parts as those in the conventional example, and thus redundant explanation will be omitted here.

In FIG. 1, (27) is a guide roller that comes into contact with the upper side surface of the movable body (22) of the linear motor on the bracket 1-(10) side. The guide roller (27) is mounted in such a manner that the movable body (22) is sandwiched between the guide roller (25) that abuts a part of the side surface of the movable body (22) on the coil (2]) side. It is something.

(28a) is an upper support piece that supports the guide rollers (25) and (27) by pivoting them substantially on the same plane. This two-part support piece (28a) is fixed to the support part (26) by means of a pin (29) so that its position can be adjusted.

(28b) is a lower support piece that pivots and supports the guide rail (25) that comes into contact with the lower side of the coil (21) side of the movable body (22). This support piece (28b) is fixed to the lower piece of the support member (26) with bolts (two) so that the position thereof can be adjusted.

Next, the operation of the elevator door drive device of this embodiment configured as shown in ``-'' will be explained.

In FIG. 1, the movable body (22) of the linear motor fixed to the bracket (10) is moved by the apparent moving magnetic pole formed by the coil (21) facing the movable body (22). The movable body (22) is guided by guide rollers (25) and (27) that abut on both sides and moves in the front-back direction.

This movement of the movable body (22) is transmitted through the bracket 1-(10) to the car door (2b) suspended from the rail (5). Therefore, the car door (2b) has a rail (
5) to open and close the doorway of the car (1).

Further, the guide rollers (25) and (27) buffer the movable body (22) in the left and right directions, and the car door (22)
b) eliminates the horizontal vibration that occurs when opening and closing the door hanger (3) and is transmitted through the bracket (10) attached to the door hanger (3)0, and
This is to keep the gap between the movable body (22) and the movable body (22) constant at all times.

Further, the upper and lower support pieces (28a) and (28b) that support the guide rollers (25) and (27) are fixed to the two lower pieces of the support member (26) by bolts (
29), adjust the installation position, and remove the guide rollers (25) and (2) supported by the upper support piece (28a).
7) and the guide roller (25) of the lower support piece (28b)
The coil (2]) and the movable body (22) are
) to adjust the gap.

As described above, the elevator door drive device of the first embodiment includes a linear motor coil (21) attached to the - side of the entrance/exit of the elevator car (1), and the elevator car (1).
), the car door (12a) opens and closes the doorway of (12b)
) is mounted with a predetermined gap at a position facing the coil (21) of the linear motor, and the movable body (22) of the linear motor and the coil (21) of the linear motor Bolts (2) are attached to the upper and lower pieces of the supporting part (26), which has a roughly U-shaped side surface that covers the lower part of 21).
9), the upper support piece (28a) and the lower support piece (28b), which are fixed so as to be adjustable in position, are each pivotally attached to the opposing surfaces of the coil (2) of the movable body (22).
The movable body (22)
and a guide roller (25) that maintains the coil (21) at a predetermined gap, and a guide roller (25) of the upper support piece (28a), which is pivoted on the same plane as the movable body (2).
2) comes into contact with the upper side of the bracket 1-(1,0) side,
The car door (2b) has guide rollers (27) that support the movable body (22) in a sandwiched manner between the guide rollers (5).
When the movable body (bracket) (10) is opened and closed,
22) is composed of a buffer portion that buffers vibrations that occur in a direction substantially perpendicular to the moving direction.

Therefore, in the embodiment described in "-", the deflection in the direction of the entrance of the car (1) that occurs when the car door (2b) of the elevator car (1) is opened and closed and is applied to the movable body (22) is It is buffered by rollers (25) and (27) and disappears. Therefore, the gap between the coil (21) of the linear motor and the movable body (22) does not change. Therefore, the magnetic resistance generated between the coil (21) and the movable body (22) can always be kept constant, and the car doors (2a), (2b) of the car (1) can be kept constant.
) improves reliability of opening/closing control. Furthermore, since the magnetic resistance is maintained constant, the current flowing into the coil (21) of the linear motor does not fluctuate. This makes the control more efficient.
It is possible to obtain the effect of realizing labor saving and energy saving.

Next, an elevator door drive device according to a second embodiment of the present invention will be described.

FIG. 2 is a side sectional view of a main part of an elevator door drive device according to a second embodiment of the present invention. In the drawings, the same reference numerals and symbols as in the first embodiment indicate the same or corresponding parts as in the first embodiment, so redundant explanation will be omitted. Only the differences from the embodiment will be explained.

In Fig. 2, (11) is a shaft member having a horizontal cross-section shape attached to the upper end of the door hanger (3) of the basket door (2b), and (12) is the movable body (10) of the linear motor. This is a bearing member formed at the lower end of the attached bracket (10). This bearing member (12) is similar to the shaft member (11).
The bracket (10) is supported on the door hanger (3) by grasping the bracket (10). Further, the bearing member (12) has a minute gap of a predetermined width between the head (11a) of the shaft member (11) and the door hanger (3), and slides the shaft member (11) in the axial direction. It has a shape that can be used.

(28c) is a lower part having a similar structure to the upper support piece (28a) of the first embodiment, and provided with guide rollers (25) and (27) that sandwich and abut the lower end of the movable body (22) from both sides. This is the supporting piece.

Next, the operation of the elevator door drive device according to the second embodiment of the present invention configured as described above will be explained.

4 In FIG. 2, the movable body (22) driven by the coil (21) of the linear motor being energized includes guide rollers (25) that abut from both sides of the upper and lower ends of the movable body (22). , (27). The movement of the movable body (22) is transmitted to the shaft member (11) through the bearing member (12) of the bracket 1-(10), and the car door (2b) rolls the hanger roller (4) on the rail (5). Move and move.

The shaft member (11) provided on the door hanger (3) of the car door (2b) prevents the bracket 1 from moving in the axial direction and is transmitted to the door hanger (3) when the car door (2b) moves.
- It slides within a minute gap formed between the bearing member (12) provided at (10). That is, the door hanger (3) is attached to the shaft member (1) with respect to the bracket (10).
1), a state of non-interference is created in the axial direction of the bracket 1-(10), and the horizontal swing of the door hanger (3) with respect to the bracket 1-(10) is buffered.

In this way, the door driving device of the elevator according to the second embodiment of the present invention is attached horizontally to the lower piece of the support member (26) using bolts (two bolts) that can be adjusted by changing the position. ”-lower support piece (28a), (
28c), and the movable body of the linear motor (
22) - guide rollers (25) whose lower ends abut each other from both sides and guide the movable body (22) in a pinched state;
(27), the bearing member (12) provided at the lower end of the bracket 1-(10) in which the movable body (22) of the linear motor is integrally removed, and the door hanger (2b) of the car door (2b). 3) A buffer consisting of a shaft member (11) which is formed to protrude laterally at the two ends and has a substantially horizontal T-shaped side surface and is gripped by the bearing member (12) so as to be slidable in the axial direction. It has a section.

Therefore, in the second embodiment, the guide rollers (25) and (27) are brought into contact with the lower end of the movable body (22) of the linear motor so as to sandwich it from both sides, thereby buffering the movable body (22). At the same time, the bearing portion U (12) allows the shaft portion 44' (11) to slide in the axial direction.

Therefore, the movable body (22) is held at two positions, upper and lower, so that it is possible to provide more stable guidance and damping of lateral vibration. In addition, the shaft member (11) slides in the axial direction to buffer the lateral vibration generated by the movement of the car door (2b). Therefore, no extra external force is applied to the movable body (22) of the linear motor, and the car door (22) is smoother.
Opening/closing control of a) and (2b) can be performed.

Furthermore, the minute gap formed between the shaft member (11) and the bearing hole (12) is
The coil (21) of the linear motor and the movable body (22) form a part that does not interfere with the axial movement of (1), and -1- the lower support pieces (28a) and (28c) are installed by changing their positions. Fine adjustment of the gap can be made regardless of the presence of the car door (2b), and there is an advantage that the installation can be carried out in a short time.

[Effects of the Invention] As described in -1- below, the elevator door drive device 7 of the present invention has a coil of a linear motor disposed in an elevator car and a coil of the linear motor facing each other with a predetermined gap. a movable body of a linear motor disposed at the entrance/exit of the car for driving the opening/closing of the car door;
A guide roller that adjustably maintains a gap between the coil of the linear motor and the movable body, and a buffer section that buffers vibrations transmitted to the movable body of the linear motor as the car door is driven. Therefore, the buffer section having the guide rollers supports the movable body of the linear motor in a sandwiched state, and also buffers against lateral vibration of the car door of the elevator car. Therefore, the gap between the coil of the linear motor and the movable body can be maintained constant, the magnetic resistance will not fluctuate, and the reliability of the control of opening and closing of the car door will be improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of a side view showing an elevator door drive device according to a first embodiment of the present invention, and FIG. 2 is a main part of a side view showing an elevator door drive device of a second embodiment of the present invention. FIG. 3 is an overall configuration diagram showing a conventional elevator door drive device, and FIG. 4 is a side sectional view of a main part of the conventional elevator door drive device. In the figure, 1.1: Shaft member 12: Two bearing members 21: Coil 22: Movable body 25. 27: Guide roller. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] A coil of a linear motor disposed in an elevator car, and a car door that is disposed facing each other with a predetermined gap between the coils of the linear motor and that is attached to an entrance/exit of the car for driving the opening and closing of the car door. a movable body of a linear motor; a guide roller movably clamped to the movable body of the linear motor from both sides and capable of adjusting a gap between the coil of the linear motor and the movable body; An elevator door drive device comprising: a buffer section that buffers vibrations transmitted to the movable body of the linear motor.