JPH07157253A - Door device for elevator - Google Patents

Abstract

PURPOSE:To eliminate detecting a door closed condition despite that an object is interposed. CONSTITUTION:A buffer 16 of a right side door 10 has a protruding part 16A, and a buffer 20 of a left side door 12 has a groove 20A. Height of the protruding part 16A is formed larger than an action point (clearance) of a switch for detecting a door closed condition. In this way, even when an object 100 is interposed, a clearance A is sufficently increased, to eliminate misdetection of the closed condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door device, and more particularly to an improvement in a joint structure of left and right car doors.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional partial elevator structure. In this example, the door provided on the car is composed of a right door 10 and a left door 12, which are brought into contact with and separated from each other by opening and closing. When the door is closed, a cushioning body 16 is provided at the end of the right door body 14 and a cushioning body 20 is provided at the end of the left door body 18 in order to alleviate the impact on the sandwiched object. That is, the pair of opposing cushioning members 16 and 20 form a joint. These buffers 16, 20 are
For example, the elastic member is made of a rubber material or the like.

FIG. 5 shows a cross section of the joint.
Here, the buffer body 16 has a convex portion 16C, while the buffer body 20 has a concave portion 20C that fits into the convex portion. With such a structure, the joined state at the time of joining the doors can be improved.

Although not shown, the door device includes a right door 1
Detector (switch) that detects 0 and the closed state of the left door 12
According to such a detector, it is detected that an object is caught when the door is closed.

Conventionally, the height (projection length) of the convex portion 16C is set to, for example, about 3 mm, and the depth of the concave portion is set to, for example, about 3 mm in accordance with the height of the convex portion 16C. , The amount of space between the two doors is small, and it is shallow.

[0006]

FIG. 6 shows both doors 10,
A state in which a thin object (for example, a handle of a handbag) 100 is sandwiched when 12 is closed is shown. In this case, if the distance B between the doors is, for example, 15 mm or less, the detector may detect that the door is closed. That is, it is feared that the door is detected to be in the closed state even though the door is not completely closed. The size of the gap in which the closed state of the detector can be detected is limited due to various restrictions.

When the closed state of the door is detected in the state shown in FIG. 6, the car is allowed to run, so the car is the object 100.
You will drive with the car sandwiched. Then, when the sandwiched object 100 is pulled out thereafter, the door moves in the opening direction by, for example, about 4 to 5 mm due to the reaction at that time, and the detector (switch) is cut off due to such a situation. become. That is, the car suddenly stops as if the door was released. In this case, if a person is in the car, a so-called canning failure will occur.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide an elevator having improved object pinch detection accuracy and high reliability.

[0009]

In order to achieve the above object, the present invention is a door device provided in an elevator, and a closed state detector for detecting a closed state of a pair of door joint portions facing each other. And one side of the door joint portion is configured by a one-sided cushioning body having a protrusion protruding in the vertical direction, and the other side of the door joint portion is fitted with the protrusion. It is composed of the other side cushioning body having a groove dug along the up-and-down direction, and the height of the protrusion is set to be larger than the gap when the closed state detector detects the closed state. Characterize.

[0010]

According to the above construction, the height of the protrusion is set to be larger than the gap (distance between door joints) when the closed state is detected, so that some object is placed between the door joints. If it is pinched, a sufficient opening amount of the door can be obtained at that time, so that it is possible to avoid erroneously determining that the door is in the closed state even if the pinch occurs.

According to the present invention, in addition to a door that closes from the left to the right,
It is also applicable to doors that close to one side. It is also possible to apply to door devices other than the car door device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an elevator door device according to the present invention. The device of the present embodiment is a car door device, and the same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 2 shows a cross section of the joint.
In the figure, the right shock absorber 16 is provided with a protrusion 16A having a mountain-shaped cross section along the vertical direction at the center thereof. On the other hand, the left cushion 20 has a groove 20A formed in the center thereof along the vertical direction so as to fit in the protrusion 16A. These shock absorbers 16 and 20 are made of, for example, a rubber material. In this embodiment, the protrusion 16 is provided at the center.
Although A and the groove 20A are formed, the present invention is not limited to this.

In this embodiment, the door gap (distance between the facing surfaces 16B and 20B: hereinafter, closed state detection gap) operated by a switch (not shown) for detecting the door closed state is set to, for example, 15 mm. Has been done. In relation to this, the height L of the protrusion 16A is set to, for example, about 20 mm, while the depth of the groove 20A is set to the protrusion 16A.
Is set to, for example, about 20 mm. Therefore, the bite amount when the door is closed is larger than that in the conventional example.

That is, in this embodiment, the height L of the protruding portion 16A is set to be larger than the above-mentioned closed state detection gap, and thereby the effect described later can be obtained.

In the door device of this embodiment, when the door is closed, the protrusion 16A is inserted into the groove 20A so that both doors 10 are closed.
And 12 are completely closed. In that case, when the gap between both doors becomes equal to or less than the distance for detecting the closed state, the closed state detection switch is turned on and the elevator can run.

FIG. 3 shows a case where the object 100 is pinched when the door is closed. Specifically, the protruding portion 16A
An object is sandwiched between the top of the and the facing surface 20B, and the gap A of the door is 25 mm, for example. In this case, in the present embodiment, the door gap A is widened by the protruding portion 16A as compared with the conventional case, so that false detection of the door closed state is avoided. That is, in this state, traveling of the elevator is prohibited, and it is possible to effectively avoid the occurrence of the above-mentioned jammed state.
Therefore, the operational reliability of the elevator can be improved simply by changing the shape of the buffer member.

Although the car door device has been described in the above embodiments, the present invention can be applied to other door devices.
The present invention can also be applied to an elevator in which the door on one side is opened and closed.

The above-described height L of the protruding portion 16A is an example, and another size may be adopted as long as L is larger than the closed state establishment detection gap.

[0021]

As described above, according to the present invention, it is possible to accurately detect that an object is caught and improve the reliability of the elevator. Further, it can be realized with an extremely simple configuration.

[Brief description of drawings]

FIG. 1 is a perspective view showing an elevator door device according to the present invention.

FIG. 2 is a cross-sectional view of a joint portion.

FIG. 3 is a diagram showing a state in which an object is sandwiched.

FIG. 4 is a perspective view showing a conventional door device for an elevator.

FIG. 5 is a cross-sectional view of a joint portion.

FIG. 6 is a diagram showing a state in which an object is sandwiched.

[Explanation of symbols]

 10 Right side door 12 Left side door 14 Door body 16 Buffer body 18 Door body 20 Buffer body 16A Projection part 20A Groove

Claims (2)

[Claims] 1. A door device provided in an elevator, comprising a closed state detector for detecting a closed state of a pair of door joint portions facing each other, wherein one side of the door joint portion is in a vertical direction. The other side of the door joint portion, the other side cushion body having a groove dug along the up-down direction that fits with the protrusion portion. The height of the protrusion is set to be larger than the gap for detecting the closed state by the closed state detector. 2. The elevator door device according to claim 1, wherein the door is a car door.