JP4876763B2 - Elevator door engagement device - Google Patents

Description

  The present invention relates to an elevator door engaging device capable of narrowing a sill interval between a landing and a car.

  The recent world is becoming barrier-free for the elderly and the disabled. In elevators as well, there is an increasing demand for reducing the threshold interval in order to reduce the number of accidents caused by the gap between the landing threshold and the cage threshold. However, since there is an engagement device between the platform sill and the car sill to transmit the opening and closing of the car door and the platform door, if the sill interval is easily reduced, the engagement device will be There is a possibility that the engagement is disengaged due to the interference with the engagement device or the engagement allowance between the engagement devices is reduced.

  In addition, as a conventional technique for narrowing the gap between the platform sill and the car sill, a pair of engagement rollers provided on the landing side door and an engagement roller provided swingably on the car side door and swinging. A car cam that can be engaged, a spring that urges the car cam to a position where the car cam is disengaged from the engagement roller, a guide rail that is disposed in the vicinity of the car cam, and a guide rail that is slidably provided in contact with the car cam. A pressing roller that can be pressed and a motor that slides the pressing roller along the guide rail. When the pressing roller is slid along the guide rail by the motor, the pressing roller resists the urging force of the spring. Has been proposed that engages with an engaging roller (see, for example, Patent Document 1).

JP 2000-118923 A

  The conventional technology for narrowing the gap between the platform sill and the car sill is to use the door opening movement to project the car cam with the pressing roller and increase the engagement allowance so that the car cam and the engagement roller are engaged. The car cam is retracted while the elevator is running, and the car cam protrudes only when the door is opened and closed to ensure a sufficient allowance for engagement. In addition, there are those that take out the movement of the door opening and closing device with a link device and project the engaging device, and others that project the engaging device with the force of a motor or electromagnetic magnet in addition to the drive device of the door closing device. . However, the mechanism for projecting the engagement device becomes complicated, causing a failure. In addition, a drive mechanism that drives the engagement device and a device that controls the drive mechanism are required, which increases the cost.

  The present invention has been made to solve the above-described problems, and is configured so that the engaging device can be protruded without requiring a new drive device for protruding the engaging device. An elevator door engaging device is provided.

  The elevator door engaging device according to the present invention is provided movably on the hoistway side of the landing door and is normally urged in a direction to be retracted to the landing side in the anti-engagement direction; A rolling inclined portion provided on the outer peripheral surface of the engagement roller and an engagement roller which is provided movably forward and backward on the landing side of the car door and is normally urged in a direction of retracting to the car side in the anti-engagement direction. A fixed engagement vane disposed between the fixed engagement vane and the fixed engagement vane so that the vane angle can be adjusted. The vane angle is normally urged in a direction to narrow the vane angle and disposed between the engagement rollers. A movable-side engagement vane, and a fixed-side engagement vane and a tip-side portion of the movable-side engagement vane. When the door is opened and closed, the vane angle of the movable engagement vane is the biasing force. The inclined portion of the fixed engagement vane and the movable engagement vane and the rolling inclined portion of the engagement roller are in contact with each other, and the fixed engagement vane and the movable are moved by the action of the inclined portions. The side engagement vanes are projected toward the landing side in the engagement direction, and the engagement rollers are projected toward the hoistway side in the engagement direction.

  According to the present invention, the engaging device protrudes from each other by the action of the inclined portion of the engaging vane and the inclined portion of the engaging roller by the gripping force of the engaging device only when the door of the elevator is opened and closed, and the allowance for the engaging device is reduced. A door engaging device that is large and does not disengage can be provided at low cost.

Embodiment 1.
1 is an external perspective view of a car-side door closing device of an elevator door engaging device according to Embodiment 1 of the present invention as viewed obliquely from above, and FIG. 2 is an elevator door engaging device according to Embodiment 1 of the present invention. FIG. 3 is a plan view showing an elevator door engaging device according to Embodiment 1 of the present invention, and FIG. 4 is an elevator view according to Embodiment 1 of the present invention. The principal part enlarged plan view which shows the state at the time of the door closing which is not performing the door opening / closing operation | movement of a door engaging apparatus, FIG. 5: is the state in the door opening / closing operation | movement of the door engaging apparatus of the elevator in Embodiment 1 of this invention. It is a principal part enlarged plan view shown.

  In the figure, 1 is an elevator car, 1a is an entrance / exit frame of the car 1, 2 is a car door provided at the entrance of the car 1, 3 is a car frame, 4 is a door opening / closing drive link for opening and closing the car door 2, 4a Is a vane angle change link provided at the tip of the door opening / closing drive link 4, 4 b is a driven door drive link provided at the center of the door opening / closing drive link 4, and 4 c is an upper end of the door opening / closing drive link 4. The door drive link provided, 5 is a door hanger provided at the upper end of the car door 2, 6 is a guide rail of the car door 2 on which the door hanger 5 is suspended and rolled, and 7 is a car 1 Drive motor provided in the upper part of the car, 8 a car sill provided in the lower part of the car 1, 9 a vane fitting having a bearing 9a in the center provided on the landing side surface of the car door 1, and 10 a rear face The vane support shaft 10a provided to protrude from the It is penetrated into the bearing 9a of the over down mounting bracket 9, which is a fixed side engaging vane is provided so as to retractably protrude toward the landing side of Kagonoto 1. The fixed-side engagement vane 10 has a stopper 10b formed at the tip of the vane support shaft 10a, and a return spring 11 is provided between the stopper 10b and the back surface of the vane attachment metal 9 to thereby fix the fixed-side engagement vane 10. The ten vane support shafts 10a are supported by the bearings 9a, and the fixed engagement vanes 10 are always retracted by the return springs 11 in the anti-engagement direction, that is, the car side. 10c is an outwardly-sloped inclined portion formed at the landing-side front end portion of the fixed-side engagement vane 10, and 10d is a through-hole formed in the central portion of the fixed-side engagement vane 10, and the vane inserted through this through-hole The tip of the angle changing link 4a abuts on the movable engagement vane 12 to adjust the angle of the movable engagement vane 12. A movable side engagement vane 12 includes a shaft pin 13 and a helical spring 14 for closing (reducing) the vane angle at the rear end of the fixed side engagement vane 10. It is provided so as to protrude toward the landing side of the door 1 facing the opposite side. Reference numeral 12 a denotes an outwardly extending inclined portion formed at the landing-side front end portion of the movable engagement vane 12. 15 is a landing door frame, 16 is a landing door provided at the landing doorway, 17 is a door hanger provided at the upper end of the landing door 16, and 18 is a landing where the door hanger 17 is suspended and rolled. Guide rail of door 16, 19 is a landing door closing device provided at the upper part of the landing, 20 is a threshold of the landing provided at the lower part of the landing, and 21 is provided on the hoistway side (car side) surface of the landing door 16. The engaging roller mounting base 22 is provided on the engaging roller mounting base 21, and the shaft mounting bracket 23 is provided with bearings 22 a at two positions on both the left and right sides, and 23 is a bearing 22 a on both sides of the shaft mounting bracket 22. And a pair of left and right engagement rollers provided so that the engagement roller support shafts 23a are respectively penetrated therethrough and protrude toward and away from the hoistway. The engagement roller 23 has a trapezoidal cross section with a large diameter on the hoistway side and a small diameter on the landing side. A stopper 23b is formed at the tip of the engagement roller support shaft 23a, and the stopper 23b and the shaft mounting bracket 22 are connected to each other. By providing the return spring 24 between the rear surface and the rear surface, the engagement roller support shaft 23a of the engagement roller 23 is pivotally supported by the bearing 22a. Has been withdrawn to the side. Reference numeral 23 c denotes an outwardly extending rolling inclined portion formed on the outer peripheral surface of the engaging roller 23. The rolling inclined portion 23c of the engagement roller 23 comes into contact with the inclined portion 10c of the fixed-side engagement vane 10 and the inclined portion 12a of the movable-side engagement vane 12 during the door opening / closing operation. When the angle of 12 is expanded, component forces in the axial longitudinal direction act on the fixed-side engagement vane 10 and the engagement roller 23, and the fixed-side engagement vane 10 and the engagement roller 23 move to the return springs 11 and 24. They are configured to move in the direction of engagement with each other against the urging force.

Next, the operation of the door engaging device will be described with reference to FIGS.
First, in a normal door closing state where the door opening / closing operation is not performed, as shown in FIGS. 3 and 4, the fixed engagement vane 10 pivotally supports the vane support shaft 10a on the bearing 9a and returns. The spring 11 is always retracted in the anti-engagement direction, that is, the car side. The movable engagement vane 12 is in the same retracted position as the fixed engagement vane 10, and the vane angle is narrowed by the shaft pin 13 and the helical spring 14 for closing the vane angle. Similarly, the engagement roller 23 pivotally supports the engagement roller support shaft 23a on the bearing 22a, and is always retracted in the anti-engagement direction, that is, the landing side by the return spring 24. Therefore, the tip inclined portion 10 c of the fixed engagement vane 10 and the tip inclined portion 12 a of the movable engagement vane 12 are opposed to the rolling inclined portion 23 c of the engagement roller 23. In this normal door closing state, the engagement allowance (bare allowance) dimension of the door engaging device is H1, which is a small dimension.
Next, in the state during the door opening / closing operation, as shown in FIG. 5, the door opening / closing force acts and the door opening / closing drive link 4 acts to push the tip of the vane angle changing link 4 a against the movable engagement vane 12. Thus, the angle of the movable engagement vane 12 is expanded, and the inclined portion 12a of the movable engagement vane 12 and the inclined portion 10c of the fixed engagement vane 10 become the inner rolling inclined portions 23c of the pair of engagement rollers 23. Pressed against. Then, due to the interaction between the inclined portion 12a of the movable engagement vane 12 and the inclined portion 10c of the fixed engagement vane 10, and the rolling inclined portions 23c of the pair of left and right engagement rollers 23 facing each other, the fixed engagement A component force in the longitudinal direction of each axis acts on the combined vane 10 and the engaging roller 23, and the fixed-side engaging vane 10 and the engaging roller 23 engage with each other against the biasing force of the respective return springs 11, 24. Move to. That is, the engaging devices protrude in the direction in which they engage with each other. For this reason, the engagement allowance (bare allowance) dimension of the door engaging device during the door opening / closing operation is H2 which is a dimension larger than H1.

  As described above, according to the first embodiment of the present invention, since the door is being opened and closed, even if the fixed-side engagement vane 10 and the movable-side engagement vane 12 of the car door 2 project too much, the landing threshold 20 Never hit. That is, during the door opening and closing, there is no interference because the sill height is different from the height position of the engagement device. For the same reason, even if the engagement roller 23 of the landing door 16 protrudes too much, it does not hit the car threshold 8. For this reason, even when the sill distance between the landing and the car is narrowed, the engagement allowance (bare allowance) of the engagement device can be sufficiently secured during door opening and closing, and the power for newly projecting the engagement device can be secured. It is not necessary to provide, and the structure which makes an engagement apparatus protrude can be implement | achieved cheaply.

  In addition, in the above description, the two-door single-opening type door engaging device has been described, but in addition, a two-door central opening-type door, a three-door single-opening type door, a four-door central-opening type door Of course, the present invention can also be applied to a door engaging device of a door.

It is the external appearance perspective view which looked at the cage | basket | car side door closing apparatus of the door closing engagement apparatus of the elevator in Embodiment 1 of this invention from diagonally upward. It is the perspective view which looked at the landing side door closing device of the door closing engagement device of the elevator in Embodiment 1 of this invention from the hoistway side. It is a top view which shows the door closing engagement apparatus of the elevator in Embodiment 1 of this invention. It is a principal part enlarged plan view which shows the state which is not performing the door opening / closing operation | movement of the door closing engagement apparatus of the elevator in Embodiment 1 of this invention. It is a principal part enlarged plan view which shows during door opening / closing of the door closing engagement apparatus of the elevator in Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 1a Car entrance / exit frame 2 Car door 3 Car frame 4 Door opening / closing drive link 4a Vane angle change link 4b Drive door drive link 4c Door drive link 5 Door hanger 6 Guide rail 7 Drive motor 8 Car threshold 9 Vane mounting metal 9a Bearing 10 Fixed side engagement vane 10a Vane support shaft 10b Stopper 10c Outwardly extending inclined portion 10d Through hole 11 Return spring 12 Movable side engaging vane 12a Outwardly extending inclined portion 13 Shaft pin 14 Winding spring 15 Door frame 16 Door 17 Door hanger 18 Guide rail 19 Platform door opening / closing device 20 Platform sill 21 Engagement roller mount 22 Shaft mounting bracket 22a Bearing 23 Engagement roller 23a Engagement roller support shaft 23b Stopper 23c Rolling slope 24 Return spring

Claims (4)

A pair of engagement rollers provided on the hoistway side of the landing door so as to freely advance and retreat, and normally biased in a direction to be retracted to the landing side in the anti-engagement direction;
A rolling inclined portion provided on the outer peripheral surface of the engagement roller;
A fixed engagement vane that is provided on the landing side of the car door so as to freely advance and retract, and is normally urged in a direction of retracting to the car side in the anti-engagement direction and disposed between the engagement rollers;
A movable-side engagement vane that is opposed to the fixed-side engagement vane and is provided so that the vane angle can be adjusted, and is normally urged in a direction to narrow the vane angle and disposed between the engagement rollers;
An inclined portion provided at each of the stationary engagement vane and the distal end of the movable engagement vane, and normally facing away from the rolling inclined portion of the engagement roller;
During the door opening / closing operation, the vane angle of the movable side engagement vane is expanded against the biasing force, and the fixed side engagement vane and the inclined portion of the movable side engagement vane and the engagement roller roll. The inclined portions are in contact with each other, and the action of the inclined portions causes the fixed-side engagement vanes and the movable-side engagement vanes to protrude toward the landing side in the engagement direction, and the engagement rollers are raised and lowered in the engagement direction. A door engaging device for an elevator, wherein the elevator door engaging device is protruded to the road side. The pair of engaging rollers has a trapezoidal cross-sectional shape with a large diameter on the hoistway side and a small diameter on the landing side, and has a rolling inclined surface spreading outwardly on the outer peripheral surface thereof,
2. The elevator door engaging device according to claim 1, wherein the fixed-side engaging vane and the movable-side engaging vane each have an outwardly extending inclined surface at a tip portion. The pair of engaging rollers are always retracted to the landing side by a return spring,
The elevator door engaging device according to claim 1 or 2, wherein the fixed side engaging vane is always retracted to the car side by a return spring.   The movable engagement vane includes a shaft pin with respect to the fixed engagement vane and a spring that urges the vane angle in a direction in which the vane angle is always narrowed. Elevator door engagement device.

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