WO2019003299A1

WO2019003299A1 - Elevator landing door device

Info

Publication number: WO2019003299A1
Application number: PCT/JP2017/023570
Authority: WO
Inventors: 夏希津谷; 昌也北澤
Original assignee: 三菱電機株式会社
Priority date: 2017-06-27
Filing date: 2017-06-27
Publication date: 2019-01-03

Abstract

Provided is an elevator landing door device that can push a landing door in a door closing direction and thus reduce the load on a motor by which a driving force to move the landing door is generated. This elevator landing door device comprises: a landing door 5 that is displaced between a fully opened position in which the landing entrance is opened and a fully closed position in which the landing entrance is closed; a door closer 8 that pushes the landing door 5 in the door closing direction across the entire range of motion of the landing door 5; and a door closing force augmentation device 9 that pushes the landing door 5 in the door closing direction when the position of the landing door 5 is on the fully closed position side in the range of motion.

Description

Elevator landing door device

The present invention relates to a landing door apparatus for an elevator provided at a landing doorway.

Conventionally, an elevator hall having a landing door that opens and closes a landing doorway, and a door closer having a weight connected to the landing door via a wire and pushing the landing door in the door closing direction using the weight of the weight. A door device is known (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent Application Publication No. 2006-347643

When a force in the direction of depth is applied to the landing door due to draft pressure generated by a large lifting stroke, wind pressure from the outside, etc., the frictional force generated between the landing door leg and the sill increases. If an excessive force is applied to the landing door, the landing door may not be fully closed, which may make it impossible to start the elevator. However, conventionally, the door closing force is increased by increasing the weight of the weight connected to the wire to cope with this problem, but the landing door is closed over the entire area of the movement range of the landing door. Since it is strongly pressed in the direction, there is a problem that when moving the landing door in the door opening direction, the load on the motor that generates the driving force to move the landing door is increased.

The present invention has been made to solve the problems as described above, and its object is to push the landing door in the door closing direction and reduce the load on the motor generating the driving force for moving the landing door. An elevator landing door device that can be

A landing door apparatus for an elevator according to the present invention comprises a landing door that is displaced between a fully open position where the landing door is open and a fully closed position where the landing door is closed, and the landing door over the entire range of movement range of the landing door. A door closer for pushing in the door closing direction and a door closing force enhancing device for pushing the landing door in the door closing direction are provided when the position of the landing door is on the fully closed position side of the movement range.

According to the landing door apparatus of the elevator according to the present invention, there is a door closer that pushes the landing door in the closing direction over the entire area of the movement range of the landing door, and the case where the position of the landing door is on the fully closed position side in the movement range In addition, since the landing door strengthening device is provided to push the landing door in the door closing direction, the load on the motor generating the driving force for moving the landing door is reduced while pushing the landing door in the door closing direction. Can.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the landing door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is an enlarged view which shows the principal part of the landing door apparatus of the elevator of FIG. It is a figure which shows the state which has separated the roller of FIG. 2 from the cam. It is a figure which shows the state which the roller of FIG. 3 contacted the 1st surface of a cam. FIG. 5 shows the roller of FIG. 4 beyond the top of the cam. It is a figure which shows the state which the roller of FIG. 5 contacted the 2nd surface of a cam.

Embodiment 1
FIG. 1 is a front view showing a landing door apparatus for an elevator according to Embodiment 1 of the present invention. The landing door apparatus of the elevator includes a header 1 provided above the landing door (not shown), a rail 2 provided in the header 1 and extending in the direction of the front, a pair of hangers 3 supported by the rails 2, and A landing door 5 rotatably supported on the hangers 3 and rolling on the rails 2 and fixed to the respective hangers 3 and displaced between a fully closed position for closing the landing doorway and a fully open position for opening the landing doorway And have.

In addition, the landing door device of the elevator is provided at the sill 6 provided at the landing and at the landing door 5, and is a locking device that detects that the landing door 5 is in the fully closed position and mechanically locks the landing door 5. And a door closer 8 for pushing the landing door 5 in the closing direction over the entire range of movement range of the landing door 5. The sill 6 is formed with a sill (not shown) into which the legs of the landing door 5 are inserted. The sill is arranged to extend in the frontage direction.

The door closer 8 has a wire 81 connected to the hanger 3 at one end and a weight 82 connected to the other end of the wire 81. The door closer 8 is a weight-type door closer 8 that pushes the landing door 5 in the closing direction by utilizing the weight of the weight 82. The door closer 8 is not limited to the weight-type door closer 8, but may be, for example, a spring-type or link-type door closer 8.

The landing door 5 has a pair of sliding doors 51. In this example, one sliding door 51 in the pair of sliding doors 51 is taken as a first sliding door 51a, and the other sliding door 51 is taken as a second sliding door 51b. The first sliding door 51a and the second sliding door 51b move in mutually opposite directions in the frontage direction when the landing door 5 is displaced between the fully closed position and the fully open position.

Further, in this example, the hanger 3 to which the first sliding door 51a is fixed among the pair of hangers 3 is taken as the first hanger 3a, and the other hanger 3 to which the second sliding door 51b is fixed is taken as the second hanger 3b. The lock device 7 and the door closer 8 are linked to the first sliding door 51a.

FIG. 2 is an enlarged view showing an essential part of a landing door apparatus of the elevator of FIG. The landing door apparatus of the elevator further includes a door closing force enhancing device 9 that pushes the landing door 5 in the door closing direction when the position of the landing door 5 is on the fully closed position side in the movement range. More specifically, when the landing door 5 moves from the fully open position to the fully closed position and the landing door 5 is in front of the fully closed position, the door closing force enhancing device 9 more specifically Push in the door closing direction. The door closing force enhancing device 9 is linked to the first sliding door 51a.

The door closing force enhancing device 9 has a cam 91 fixed to the header 1 and a lever 92 attached to the first hanger 3a.

The cam 91 is formed such that the front part in the front direction is positioned lower than the front end in the front direction. In other words, the cam 91 is formed in an inverted chevron shape. The cam 91 has a top 911 provided at the middle in the front direction and serving as the lowermost end of the cam 91, a first surface 912 provided between the top 911 and the opening direction end of the cam 91, and a top 911 And a second surface 913 provided between the cam 91 and the end in the door closing direction. The top portion 911 is disposed closer to the door closing direction than the center portion in the front opening direction of the cam 91. The first surface 912 is formed on a slope that approaches the first hanger 3 a as it goes in the door closing direction. On the other hand, the 2nd surface 913 is formed in the slope which leaves | separates from the 1st hanger 3a as it goes to the door closing direction. A horizontal surface is not formed between the first surface 912 and the second surface 913. In other words, the cam 91 does not have a horizontal surface between the first surface 912 and the second surface 913.

The angle of the first surface 912, which is the slope between the top 911 of the cam 91 and the end in the door opening direction, with respect to the horizontal plane is the second surface 913, which is the slope between the top 911 of the cam 91 and the door closing direction. Less than the angle to the horizontal plane. In other words, the angle of the second surface 913 to the horizontal surface is larger than the angle of the first surface 912 to the horizontal surface.

The lever 92 includes a bracket 921 fixed to the first hanger 3 a, a rotation shaft 922 provided on the bracket 921, and a lever main body 923 having one end connected to the rotation shaft 922 and rotating around the rotation shaft 922 A rotatable roller 924 is connected to the other end of the lever main body 923, a twist spring 925 which pushes the lever main body 923, and a stopper 926 which regulates the rotation of the lever main body 923. The torsion spring 925 is provided across the rotation shaft 922 and one end of the lever main body 923. In other words, the torsion spring 925 is connected to the rotation shaft 922 and the portion of the lever main body 923 on the rotation shaft 922 side.

The roller 924 is disposed closer to the door closing direction than the rotation shaft 922. The roller 924 is arranged to roll the cam 91. The torsion spring 925 pushes the lever main body 923 so that the roller 924 is pressed from below onto the cam 91. The lever 92 is not limited to the torsion spring 925, and may include other members that push the lever main body 923. The stopper 926 regulates the movement of the roller 924 above the preset position.

Next, the operation of the door closing force enhancing device 9 will be described. 3 shows the roller 924 in FIG. 2 separated from the cam 91, FIG. 4 shows the roller 924 in FIG. 3 in contact with the first surface 912 of the cam 91, and FIG. FIG. 6 is a view showing a state in which the roller 924 exceeds the top portion 911 of the cam 91, and FIG. 6 is a view showing a state in which the roller 924 in FIG. 5 contacts the second surface 913 of the cam 91. When the landing door 5 moves from the fully open position to the fully closed position, the roller 924 moves in the door closing direction from the position away from the cam 91 in the door opening direction and contacts the first surface 912 of the cam 91.

When the roller 924 moves in the door closing direction and the roller 924 contacts the first surface 912 of the cam 91, the roller 924 rides on the cam 91 toward the top 911 of the cam 91. Thereby, as shown in FIG. 4, the lever main body 923 rotates so that the roller 924 moves downward. As a result, the torsion spring 925 pushes the lever main body 923 in the direction in which the roller 924 moves upward, that is, in the direction of the arrow A shown in FIG.

Since the roller 924 is pressed against the first surface 912 by the torsion spring 925 pushing the lever main body 923 in the direction in which the roller 924 moves upward, the first hanger 3a is in the direction in which the landing door 5 faces the door opening direction. , In the direction of arrow B shown in FIG.

When the roller 924 passes over the top 911 of the cam 91, the roller 924 contacts the second surface 913 of the cam 91. In this case, since the torsion spring 925 pushes the lever main body 923 in the direction in which the roller 924 moves upward, the first hanger 3a is in the direction in which the landing door 5 moves in the door closing direction, that is, the arrow C shown in FIG. It is pushed in the direction.

When the roller 924 passes over the cam 91 and reaches the end of the cam 91 in the door closing direction, the stopper 926 regulates the rotation of the lever main body 923, and the force on the lever main body 923 by the torsion spring 925 is released. As a result, the force acting on the first hanger 3a in the direction in which the landing door 5 moves in the door closing direction is released. When the landing door 5 reaches the fully closed position, the locking device 7 locks the landing door 5.

As described above, according to the landing door apparatus of the elevator according to the first embodiment of the present invention, the door closer 8 that pushes the landing door 5 in the closing direction over the entire area of the movement range of the landing door 5; When the position of the door 5 is at the fully closed position side in the movement range, the landing door 5 is reinforced with the door closing force enhancing device 9 that pushes the landing door 5 in the door closing direction. The load on the motor that generates the driving force for moving the door 5 can be reduced. In addition, since the door closer 8 and the door closing force enhancing device 9 push the landing door 5 in the closing direction, the legs and the sill of the landing door 5 are generated by, for example, a draft pressure generated due to a large lifting stroke or wind pressure from the outside. Even if it is an environment where the landing door 5 is difficult to close due to an increase in the frictional force between the position 6 and the landing door 5, the position of the landing door 5 can be more reliably brought into the fully closed position.

Further, since the door closer 8, the door closing force enhancing device 9 and the lock device 7 are linked to the first sliding door 51a, the method of the landing door 5 does not depend on either the double opening method or the single opening method. The same door closer 8, the door closing force enhancing device 9 and the locking device 7 can be installed.

In the first embodiment, the configuration in which the pair of sliding doors 51 move in mutually opposite directions in the frontage direction is described, but the pair of sliding doors 51 may move in the same direction as each other in the frontal direction.

DESCRIPTION OF SYMBOLS 1 header, 2 rails, 3 hangers, 3a 1st hanger, 3b 2nd hanger, 4 rollers, 5 landing door, 6 sill, 7 locking device, 8 door closer, 9 door closing force enhancing device, 51 sliding door, 51a 1st sliding door , 51b second sliding door, 81 wire, 82 weight, 91 cam, 92 lever, 911 top portion, 912 first surface, 913 second surface, 921 bracket, 922 rotation shaft, 923 lever main body, 924 roller, 925 torsion spring, 926 stopper.

Claims

A landing door that is displaced between a fully open position where the landing doorway is open and a fully closed position where the landing doorway is closed;
A door closer that pushes the landing door in the closing direction over the entire area of the movement range of the landing door;
A door closing force enhancing device for pushing the landing door in the door closing direction when the position of the landing door is on the fully closed position side in the movement range.
And a lock device for locking the landing door when the landing door is at the fully closed position,
The landing door has a pair of sliding doors that open and close the landing door by moving in the direction of the frontage,
The elevator door according to claim 1, wherein the door closer, the door closing force enhancing device and the locking device are linked to a first sliding door which is one of the pair of sliding doors.