JPH11193192A - Doorway device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a doorway device of an elevator wherein a space between a hatch side sill and a cage side sill is formed as small as possible, safety in getting in and off is improved, also dropping down or the like of foreign matter can be avoided. SOLUTION: In a side edge parr of a cage 1, a step 3 protruded toward a hatch side sill 2 is provided turnably by a hinge, the step 3 is turned by a reciprocating link 6 from a vertically standing position to a horizontal position when the cage 1 leads to a prescribed position. A reciprocating motion driving gear making reciprocating motion is connected to the reciprocating link 6. The reciprocating motion driving gear of the reciprocating link 6 is a tensile spring 15 deformed in shape compressed when a current is carried by a shape memory alloy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator entrance / exit device, and more particularly, to a clearance between a hatch sill for guiding a lower portion of a hatch door and a cage sill for guiding a lower portion of a cage door. The present invention relates to an entrance / exit device which is made as small as possible to enhance safety when getting on / off.

[0002]

2. Description of the Related Art In an elevator, a gap formed between a hatch-side sill that guides a lower portion of a hatch door and a cage-side sill that guides a lower portion of a cage door is made zero from the viewpoint of securing the mobility of a cage. In the past, a gap of several tens of millimeters has been formed between both thresholds.

[0003] Such a gap does not seem to cause any particular problem for a healthy person. Can not be taken, or
There was a problem that small items such as keys and cards dropped by the user or dust scattered on the floor surface fell into the elevator pit from the gap.

[0004]

According to the present invention, the clearance between the hatch-side sill and the cage-side sill is made as small as possible to improve the safety at the time of getting on and off, and also to prevent foreign matters from falling. It is an object to provide an elevator entrance / exit device.

[0005]

The present invention is an apparatus for eliminating a gap between a hatch-side sill (2) for guiding a lower portion of a hatch door and a cage-side sill (4) for guiding a lower portion of a cage door. A step (3) protruding toward the hatch-side sill (2) is provided at the side edge of the cage (1) by a hinge so as to be rotatable, and the step (3) is attached to the step (3) by the cage (1). A reciprocating link (6) for rotating from an upright position to a horizontal position when a predetermined position is reached, and a reciprocating drive for reciprocating the reciprocating link (6) is connected to the reciprocating link (6). It is assumed that.

The reciprocating drive of the reciprocating link (6) is characterized in that it is a tension spring (15) which is deformed into a compressed shape when energized by a shape memory alloy.

The reciprocating link (6) is pivotally mounted on one end of a swing plate (12) rotatably connected to the cage (1), and has a shape memory at the other end of the swing plate (12). The swing plate (12) is provided with a bias spring (18) on the opposite side of the tension spring (15), in addition to the feature that a tension spring (15) made of an alloy is mounted. Features.

Still further, the reciprocating drive of the reciprocating link (6) is a solenoid or a fluid cylinder.

In addition, the step (3) is characterized in that an elastically deformable cushioning material (20) is provided on the edge.

[0010]

FIG. 1 is a side view of an apparatus according to the present invention, and FIG. 2 is a front view. In the figure, reference numeral 1 denotes an ascending and descending cage, and a hatch-side sill 2 for guiding a lower portion of a hatch door.
The step 3 which is protruded and turned toward the cage door is rotatably attached via a hinge 5 to a front end edge of a cage side sill 4 for guiding a lower part of the cage door.

Reference numeral 6 denotes a reciprocating link for rotating the step 3, and a bracket 7 provided on the lower surface of the step 3.
Are connected to each other by a stop shaft 8, and as shown in FIG. The reciprocating link 6 is formed by a screw shaft, and is loosely inserted into a stopper 9 fixed to the cage 1 so as to protrude from the stopper 9, and the stopper 9
The reciprocating movement distance, that is, the rotation angle of the step 3 can be adjusted by the lock nuts 10 and 11 screwed around.

Numeral 12 denotes a swing plate for reciprocating the reciprocating link 6, and a fulcrum shaft 13 whose center is axially mounted on the cage 1.
The reciprocating link 6 is connected to one end by a first shaft 14 and the other end is provided with a tension spring 15 having the property of changing to a shape in the compression direction only when energized. It is connected by two shafts 16.
The end of the tension spring 15 is fixed to the cage 1. Also, a first linking the reciprocating link 6 and the rocking plate 12
The shaft 14 is loosely fitted in a long hole 17 formed in the rocking plate 12 to ensure smooth rotation of the rocking plate 12.

The above-mentioned tension spring 15 is stored in such a manner that it becomes a shape in the compression direction when energized by a shape memory alloy, and FIG. 1A shows that the tension spring 15 is activated when the cage 1 stops at a predetermined position. Power is supplied and compressed, whereby the rocking plate 12 is rotated clockwise. The reciprocating link 6 is rotated by the clockwise rotation of the swinging plate 12.
Moves forward from step 3 to the horizontal direction from the upright state, and reduces the gap between the cage 1 and the floor.

On the other hand, when the cage 1 is moved, the tension spring 1
5 is turned off. FIG. 1B shows the state when the cage 1 has reached the floor or immediately before the movement. When the power to the tension spring 15 is cut off, step 3 is to extend the tension spring 15 and turn it upright by its own weight. Move.

The step 3 is turned upright by its own weight against the tension spring 15, but the swinging motion of the swinging plate 12 in the counterclockwise direction (the direction in which the step 3 is turned upright). May be provided between the fulcrum shaft 13 and the second shaft 16.

As shown in FIG. 3, the front edge of the step 3 is provided with an elastically deformable cushioning material 2 such as a sponge.
By attaching 0, the gap formed between the hatch-side sill 2 and the step 3 is made as small as possible while avoiding interference.

In the entrance / exit apparatus having the above-described structure, the step 3 is rotated and held at the folding position shown in FIG. 1B while the cage 1 is moving, so that the moving gap of the cage 1 is secured. In addition, interference with the hatch-side sill 2 and the like is avoided.

On the other hand, when the cage 1 stops at a predetermined floor position, the tension spring 15 is energized by a start signal output from a control device (not shown), and the tension spring 15 is deformed into a compressed shape and Is rotated clockwise.
Then, the step 3 previously folded and held as shown in FIG. 1 (B) projects and turns toward the hatch-side sill 2 and becomes substantially horizontal as shown in FIG. 1 (A). Step 3 is held in that position.

Since the hatch door and the cage door are opened after the step 3 protrudes and turns, the gap between the hatch-side sill 2 and the cage-side sill 4 at the time of getting on and off is reduced to several millimeters. Therefore, for example, wheels of a cane or an umbrella, wheels of a wheelchair or a stroller are stuck in the gap and cannot be moved, or keys or cards dropped by the user or dust scattered on the floor surface, etc. Is prevented from falling into the elevator pit from the gap.

When the hatch door and the cage door are closed with the end of getting on and off, the supply of power to the tension spring 15 is cut off by a signal from the control device. Rotate to the position shown in
In this position, the stop is held and the step 3 is held in a folded state. When the bias spring 18 is provided, the folding operation in step 3 is performed smoothly.

The movement of the cage 1 is performed only when the step 3 is held in a folded state as described above, and the cage 1 does not move while the step 3 is being protruded and held while getting on and off. Therefore, although the gap between the hatch-side sill 2 and the cage-side sill 4 can be substantially reduced and corrected to ensure safety when getting on and off, interference between the cage 1 and the building side is avoided. be able to.

When the elastically deformable cushioning material 20 is provided at the front edge of the step 3 as in the embodiment, the gap can be narrowed while avoiding the interference between the step 3 and the hatch-side sill 2. There are advantages that can be.

In the embodiment, the drive source of the operating means of the reciprocating link 6 is connected via a tension spring 15 made of a shape memory alloy and a link mechanism made up of a rocking plate 12, but these mechanisms are shown in the embodiment. The drive source of the operating means of the reciprocating link 6 may be constituted by a solenoid or a fluid cylinder.

[0024]

According to the elevator entrance / exit device of the present invention, the clearance between the hatch-side sill guiding the lower part of the hatch door and the cage-side sill guiding the lower part of the cage door is reduced as much as possible. The safety at the time can be improved, and the fall of a foreign substance or the like can be avoided.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a front view.

FIG. 3 is a side view showing another embodiment.

[Explanation of symbols]

 Reference Signs List 1 cage 2 hatch-side sill 3 step 4 cage-side sill 5 hinge 6 reciprocating link 7 bracket 8 stop shaft 9 stopper 10 lock nut 11 lock nut 12 rocking plate 13 fulcrum shaft 14 first shaft 15 extension spring 16 second shaft 17 long hole 18 bias spring 20 cushioning material

Claims (7)

[Claims] 1. A hatch-side sill (2) for guiding a lower part of a hatch door and a cage-side sill (4) for guiding a lower part of a cage door.
(3) a step of projecting toward the hatch-side sill (2) at the side edge of the cage (1)
A reciprocating link (6) that is rotatably provided by a hinge and turns the step (3) from the upright position to the horizontal position when the cage (1) reaches a predetermined position in the step (3).
And a reciprocating drive for reciprocating the reciprocating link (6) is connected to the reciprocating link (6). 2. The elevator entrance and exit device according to claim 1, wherein the reciprocating drive of the reciprocating link is a tension spring made of a shape memory alloy. 3. A reciprocating link (6) is pivotally attached to one end of a swing plate (12) rotatably pivoted to the cage (1),
The elevator doorway device according to claim 1, wherein a tension spring (15) made of a shape memory alloy is mounted on the other end of the rocking plate (12). 4. The swing plate (12) includes a tension spring (15).
The elevator entrance / exit device according to claim 3, characterized in that a bias spring (18) is mounted on the opposite side of the elevator. 5. The elevator access device according to claim 1, wherein the reciprocating drive of the reciprocating link is a solenoid. 6. The elevator access device according to claim 1, wherein the reciprocating drive of the reciprocating link is a fluid cylinder. 7. The elevator entrance / exit device according to claim 1, wherein the step (3) includes an elastically deformable cushioning material (20) provided at an edge portion.