JP2875946B2 - Sliding door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door device provided in, for example, a landing or a car of an elevator and capable of preventing a hand-jamming accident accompanying the opening operation of the sliding door.

[0002]

2. Description of the Related Art Conventionally, for example, elevators and the like have used a sliding door device in which a sliding door is laterally slid by a driving machine to open and close an entrance. In such a sliding door device, since the sliding door slides along the entrance frame, an accident in which a hand or a finger is pinched between the entrance frame and the sliding door often occurs. For this reason, a sliding door device provided with a safety device for preventing such an accident is generally used.

Conventionally, as this kind of sliding door device, there is a technique disclosed in Japanese Patent Application Laid-Open No. 2-295883 shown in FIGS. 5 and 6, for example. In FIG. 5, reference numeral 100 denotes a landing floor of an elevator.
01 is formed to define an entrance. A double door 110 as a sliding door is attached to such an entrance, and a safety device is provided on these doors 110. The safety device pushes a window member 120 attached to the window portion 111 of each door 110 so that the door 110 is pushed.
Is stopped or switched to the closing operation.

[0004] Specifically, as shown in FIG.
The holding fitting 121 is fixed to the back side of the
1, a window member 120 is attached via a coil spring 122. The window member 1 is located near the window member 120.
A microswitch 130 for detecting the displacement of the microswitch 20 is provided, and the opening operation of the door 110 is stopped or inverted to the closing operation under the control of the control unit 131 which has received a signal from the microswitch 130. I have.

With this configuration, the door 110 and the entrance frame 1
01, when a hand or finger is sandwiched between the coil spring 1
When the window member 120 is pushed toward the holding fitting 121 against the urging force of the switch 22, the displacement of the window member 120
The control unit 131 stops the opening operation of the door 110 or reverses the operation to the closing operation in response to a signal from the micro switch 130. As a result, the door 110 stops in a state where the hand or finger is sandwiched shallowly, so that the hand or finger can be easily extracted. Further, when the door 110 is reversed to the closing operation, the hand or the like is automatically released. In this manner, the above-described conventional sliding door device aims to prevent a hand pinching accident.

[0006]

However, in the above-described conventional sliding door device, a person who has or is almost likely to pinch his or her hand or finger between the door 110 and the doorway frame 101 manually. If the button 110 is not pressed, the opening operation of the door 110 does not stop or the operation of the door 110 does not reverse to the closing operation, so that there is a problem that injuries due to a pinching accident cannot be sufficiently prevented.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a sliding door device capable of more reliably preventing an injury due to a hand-jamming accident.

[0008]

According to the first aspect of the present invention, a sliding door device is provided with a detecting section for detecting the movement of the front door with respect to the sliding door body, and according to information from the detecting section. A control unit for stopping the opening operation of the sliding door is provided.

According to a second aspect of the present invention, a sliding door is provided with a detecting section for detecting the movement of the front door relative to the sliding door body, and the opening operation of the sliding door is performed in accordance with information from the detecting section. It is provided with a control unit for inverting and closing operation.

[0010]

According to the first aspect of the present invention, when the sliding door main body performs the opening operation of the set amount while the hand is sandwiched, the detecting section detects this and the control section stops the opening operation of the sliding door. .

According to the second aspect of the present invention, when the sliding door main body performs the opening operation of the set amount while the hand is sandwiched, the detecting section detects the opening operation, and the control section reverses the opening operation of the sliding door. Close operation.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a landing entrance of an elevator to which a sliding door device according to one embodiment of the present invention is applied, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

In FIG. 1, reference numeral 1 denotes a landing floor of an elevator, 2 denotes a wall of the landing, and an entrance frame 4 is provided at a peripheral portion of an opening provided in the wall 2 to define an entrance 5. A button 3 for calling a car is attached near the entrance frame 4 of the wall 2. And this doorway frame 4
Doors 10 as sliding doors that open and close laterally at the location
Is provided.

As shown in FIG. 2, the door 10 has a door main body 11 as a sliding door main body, and a front plate 12 as a front door capable of reciprocating in the lateral direction with respect to the door main body 11. When only the door main body 11 moves, the micro switch 20 serving as a detection unit detects the movement and detects a hand pinching accident. Specifically, the door main body 11 is a U-shaped plate body with an opening facing the entrance 5 side, the upper part thereof is suspended, and the lower part is fitted in the guide groove 16 of the threshold 15. Further, the door body 11 slides along the guide groove 16 by the driving force of a driving device (not shown).

On the other hand, the front plate 12 is also formed in a U-shape in cross section, but its opening faces the side opposite to the entrance 5 side, and its width is set to be shorter than the width of the door body 11. . As shown in FIG. 2, the front plate 12 is fitted into the door main body 11 such that the opening-side bent portion 12 a enters the door main body 11 and the bent portion 12 b is located outside the door main body 11. Have been. The open-side bent portion 12a of the front plate 12 is connected to the inner side portion 11a of the door body 11 via a coil spring 13 as an elastic member.
As a result, the entire front plate 12 is pulled toward the opening-side bent portion 11a.

With this structure, when the drive unit is operated to move the door body 11 in the opening direction (the direction of arrow C in FIG. 1) along the guide groove 16, the coil spring 1
The front plate 12 connected by 3 moves integrally with the door body 11 in the opening direction. When the door 10 is opened, the front plate 12
Is stopped, the coil spring 13 extends, and the door body 11
Only move in the opening direction. The movement of only the door body 11 is detected by the microswitch 20.

The microswitch 20 is fixed on the door body 11 at a position located inside the opening-side bent portion 12a of the front plate 12, and is electrically connected to the control unit 22. The microswitch 20 has a tactile portion 21 such as a push button that faces the opening-side bent portion 12a, and controls the stop / reverse signal when the open-side bent portion 12a contacts the tactile portion 21. Output to the unit 22. Specifically, when the opening direction side bent portion 12a of the front plate 12 moves by a predetermined distance L with respect to the door main body 11, the opening direction side bent portion 12a comes into contact with the tactile portion 21, and the tactile portion 21 is moved. It is designed to be pressed.

When the control unit 22 receives the stop / reverse signal from the microswitch 20, the control unit 22 controls the drive unit to stop the movement of the door body 11 or reverse the door body 11 in the closing direction.

Next, the operation will be described. First, FIG.
As shown in FIG. 2, when the person M pushes the button 3 near the entrance / exit frame 4 at the entrance / exit 5 of the elevator, when the car stops at the entrance / exit 5, the above-mentioned driving machine operates, and FIG. The door body 11 of the door 10 shown slides in the direction of arrow C along the guide groove 16 of the threshold 15. At this time, the open-side bent portion 12a of the front plate 12 is
The front plate 12 also moves in the opening direction integrally with the door body 11 because the front plate 12 is connected to the opening-side bent portion 11a of the door body 11 through the opening.

As shown in FIG. 3, when a person M erroneously puts his / her hand H in the gap D between the door 10 and the doorway frame 4, the hand H and the front plate 12 cause a friction. The plate 12 stops, the coil spring 13 extends, and only the door body 11 moves in the opening direction. In a state where the hand H is sandwiched shallowly in the gap D, when a force is applied so that the person M immediately removes the hand H from the gap D, that is, a force is applied so as to move the hand H in the direction opposite to the arrow C direction. And the top plate 12 moves integrally with the hand H,
Is released from the gap D. As a result, the person M can easily pull out the hand H from the gap D, and the damage can be minimized.

Further, the hand H is pulled by the door body 11 and fits deeply into the gap D.
If it cannot be easily moved in the direction shown in FIG.
As shown in the figure, when the door main body 11 has moved by a predetermined distance L in the direction of arrow C, the tactile portion 21 of the microswitch 20 fixed to the door main body 11 is stopped.
Of the micro switch 2
0 is operated. As a result, a stop / reverse signal is output from the microswitch 20 to the control unit 22 and the control unit 22
Thereby, the driving device is controlled, and the movement of the door main body 11 is stopped or reversed in the closing direction.

Thereafter, the hand H can be pulled out of the gap D with the door main body 11 stopped, and when the door main body 11 is turned over, the hand H is guided to the front plate 12 which is turned upside down. Automatically exits the gap D. As a result, the hand H is not seriously injured.

Although the sliding door device on the landing side has been described in the above embodiment, the sliding door device may be on the car side, so that an injury due to a hand-jamming accident between the door column of the car and the car door can be prevented. Further, in the above-described embodiment, the description has been given of the sliding door device which has the two-door opening on both sides. For example, in the case of a two-door horizontal opening, if the structure of the present invention is applied to both a high-speed door and a low-speed door, two-
Injuries can also be prevented from occurring in the event of a hand pinch accident between two sliding doors.

Further, in the above embodiment, the sliding door device of the elevator has been described. However, the present invention can be applied to other sliding door devices such as an automatic door provided in a building.

[0025]

As described above, in the sliding door apparatus according to the first aspect of the present invention, the front door is provided at the entrance side of the sliding door so as to be movable in the door closing direction with respect to the sliding door body. If a hand is caught between the front door and the entrance frame when opening, the sliding door body will continue to open the door as it is, but the front door will stop due to frictional force with the hand and the front door will slide. Because it can be moved with respect to the main body, you can easily pull out the sandwiched hand,
Therefore, it is possible to more reliably prevent injuries caused by a hand pinching accident, and to improve safety . Further, provided with a detector for detecting a movement relative to the table doors sliding door body sliding door, is provided with the controller for stopping the opening operation of the sliding door in accordance with the information from the detection unit, interposed Mareta hand If the sliding door cannot be pulled out, the sliding door can be stopped, thereby providing an effect that the safety can be further improved.

Further, the sliding door device according to the second aspect of the present invention
A detector for detecting a movement relative sliding door body Omoteto is provided on the sliding door, is provided with the control unit for closing operation by reversing the opening operation of the sliding door in accordance with the information from the detection unit, slide down The hand can be more easily pulled out by reversing the door, and the safety can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a landing entrance of an elevator to which a sliding door device according to an embodiment of the present invention is applied.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view showing a state when the hand is pinched in FIG. 2;

FIG. 4 is a cross-sectional view showing a state where the hand-clamp state of FIG. 3 is maintained.

FIG. 5 is a front view showing an example of a landing entrance of an elevator to which a conventional sliding door device is applied.

FIG. 6 is a sectional view taken along line BB of FIG.

[Description of Signs] 5 doorway, 10 door (sliding door), 11 door body (sliding door body), 12 front plate (front door), 20 microswitch (detection unit), 22 control unit.

Claims (2)

(57) [Claims] 1. A sliding door main body for opening and closing an entrance, a front door movably provided in a door closing direction on an entrance side of the sliding door main body, and a detection for detecting movement of the front door with respect to the sliding door main body. A sliding door device comprising: a sliding door having a unit; and a control unit that stops the opening operation of the sliding door according to information from the detection unit. 2. A sliding door main body for opening and closing an entrance, a front door movably provided in a door closing direction on an entrance side of the sliding door main body, and a detection for detecting the movement of the front door with respect to the sliding door main body. A sliding door device comprising: a sliding door having a unit; and a control unit that reverses an opening operation of the sliding door and performs a closing operation in accordance with information from the detection unit.