JP3263900B2 - Free stop release 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 free stop device for a sliding door, which is capable of temporarily opening a sliding door provided with a door wheel rolling while engaging with a rail in a stopped state, by releasing the stop operation to remove the sliding door. Automatically (forced)
The present invention relates to a free stop release device that can be closed.

[0002]

2. Description of the Related Art Sliding doors which are easy to open and close, require little space for opening and closing, and are suitable for use in wheelchairs by persons with disabilities or the elderly, who have difficulty in walking, etc., are installed and used in various places. ing.

[0003] Further, in this sliding door, in particular, for example, a rail engaging with a sliding door of a sliding door is provided with a slope, and the sliding door is self-closed by utilizing a difference between gravity and potential energy, or a weight of a weight is used. In order to close the sliding door, a device having a relatively simple structure and mechanical self-closing means is proposed and developed. By the way, in such a sliding door provided with the self-closing means, there has been a demand that, when the door is opened, the opened state is temporarily stopped halfway and the half-open state is maintained.

Therefore, a free stop device capable of temporarily stopping the sliding door during the opening operation has been developed. As such a free stop device, for example, a cam provided on the sliding door side is pressed against the rail side. A configuration in which a sliding operation is performed to perform a stop operation is known.

Further, in such a free-stop device, for example, when a fire or the like occurs, the sliding door in a stopped state is quickly closed to thereby prevent the spread of fire, or toxic gas or smoke generated simultaneously with the fire enters. In order to prevent this, a free stop release device has been developed and used.

As this free stop release device, there is known a configuration in which the rotation operation of a cam is controlled by using an electromagnetic solenoid to release the pressure contact / sliding state with the rail to immediately release the stop operation. ing.

[0007]

In general, the free stop release device is provided with an electromagnetic solenoid on the side of the sliding door that moves and opens and closes. Therefore, a wiring cord for supplying power to the electromagnetic solenoid is connected to an external power supply. Need to be provided. However, with this wiring code,
There is a possibility that disconnection, short-circuit, biting (between the sliding door and the door frame, etc.) or electric leakage may occur with the movement and opening / closing operation of the sliding door, and there is also a problem in appearance.

In view of the above circumstances, it is an object of the present invention to provide a free-stop canceling device which does not cause troubles such as disconnection, short-circuit, biting, and the like, and has a good external appearance. It is.

[0009]

That is, the invention according to claim 1 comprises a door pulley engaged with a rail provided along the opening and closing direction of the sliding door and a self-closing means provided for the sliding door to self-close. In the sliding door free stop device for stopping the sliding door in the middle of the opening and closing operation, when the sliding door has moved to a predetermined opening position, the stop member for stopping and locking the opening operation of the sliding door is pressed and slid. A slider provided in parallel with the rail, and a driving means which operates by fluid pressure or electromagnetic force to move the slider forward and backward are provided on the door frame side or the wall side, and the driving means is operated to operate the stop member and the slider. Control means for canceling the stop operation due to the pressure contact and sliding with the controller.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show a free stop device provided on a sliding door according to an embodiment of the present invention. The free stop release device 1 of this embodiment is provided with a free stopper constituted by an elastic roll (stop member) 3 attached to the sliding door 2 and a slider 5 along a rail 4 provided on the wall to which the door frame is attached. The stop operation is canceled and includes a solenoid 6 for moving the slider 5 forward and backward, and a control unit 7 (see FIG. 2) for operating the solenoid 6. In FIG. 1, reference numeral 8 denotes a door frame.

In FIG. 3, reference numeral 31 denotes a housing in which a braking member 32 is fixed, 31A denotes a guide hole formed in the housing 31, and 33 denotes a torsion spring.

The slider 5 is formed of a substantially square rod, and is particularly slidable along the upper surface of the rail 4.

The solenoid 6 is operated and excited by the control of the control unit 7, and is connected to a connecting rod 5 A fixed to one end of the slider 5.
The magnetic material 5B connected through the can be sucked and adsorbed.

As shown in FIG. 2, the control unit 7 includes an appropriate sensor 7A such as a temperature sensor, a gas sensor, or a smoke sensor.
By installing near the sliding door 2, it is possible to detect a nearby environmental change (change in toxic gas, smoke, temperature, etc.) and output a predetermined control signal to the solenoid 6. The output is connected to the input of the solenoid 6.

Next, the operation of the free-stop release device of this embodiment will be described. The sliding door 2 is pushed open along the rail from the closed state, and moves to a predetermined open position. Then, the elastic roller 3 near the center of the guide hole 31A in FIG. 3 comes into contact with and slides on the slider 5, and moves toward the left side of the guide hole 3A against the elastic force of the torsion spring 33. Since it moves toward the left end of 31A, it rolls with respect to the slider 5 (or idles in a non-contact state).

If the sliding door 2 is stopped and the hand is released from the sliding door 2, the sliding door 2 tries to return to the closing direction (left side in FIG. 3) by the action of gravity.
The elastic roller 3 located near the left end of the
It is pushed back to the center of A. That is, since the guide hole 4A is sandwiched between the braking member 32 and the slider 5 from a position slightly left of the center of the guide hole 4A, the frictional force exceeding the closing force of the sliding door 2 toward the center (the torsion spring 7). Is applied), whereby the sliding door 2 is stopped.

This stop operation continues as long as the sliding door 2 is not closed (or unless it is further opened). For example, if a fire occurs at this time and a flame or toxic gas is generated,
This temperature and gas are detected by the sensor 7A and the sensor 7A
When the detection signal output from the control unit 7 is input to the control unit 7, the control signal output from the control unit 7 immediately activates and excites the solenoid 6.

As a result, the slider 5 is sucked and pulled,
3 moves along the rail 4 to the right in FIG. 3, the elastic roller 3 sandwiched between the slider 5 and the braking member 32 at this time exerts a force exceeding the stop force or the frictional force and moves to the right. Moving. Then, since the slider 5 retreats from directly below the elastic roller 3 to the upper side, even if the elastic roller 3 returns to the central portion thereafter, it is not sandwiched between the slider 5 and the sliding door 2 has a self-closing force. It will be closed promptly.

The slider 5 of this embodiment can automatically return to its initial position by sliding down to the bottom along the rail 4 by its own weight when not excited.

Next, another embodiment of the present invention will be described. In this embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description will not be repeated. FIG.
1 shows a free stop release device according to a second embodiment, which comprises a cam (stop member) 9 attached to the sliding door 2 side and a slider along the rail 4 provided on the wall side. 5 to release the operation of the free stopper. The free stop release device of this embodiment includes a solenoid 6 for moving the slider 5 forward and backward, and a control unit 7 (see FIG. 2) for operating the solenoid 6.

As shown in FIG. 5, the cam 9 of this embodiment is a plate having a substantially triangular shape, and has an appropriate support member (fixed to the hanger 20 on the sliding door 2 side) 90 at the top.
, And the lower surface thereof can be brought into contact with and slide on the slider 5.

In this embodiment, the same operation as in the previous embodiment is performed, that is, the solenoid 6 is operated and excited, the slider 5 is attracted and pulled to forcibly move upward, and the contact between the cam 9 and the slider 5 is made. -It is configured to release the stop operation due to sliding.

In these embodiments, a solenoid using an electromagnetic force is used as a driving means for forcibly moving the slider to release the stop operation.
In addition, various fluids such as air and oil may be used.

[0024]

As described above, according to the present invention, when the sliding door has moved to the predetermined opening position, the stop member for stopping and locking the opening operation of the sliding door is provided with the rail which is pressed and slid. A slider provided in parallel,
Operates by fluid pressure or electromagnetic force to move the slider back and forth.
Since the driving means for moving is provided on the door frame side or the wall side, and the control means for operating the driving means to cancel the stop operation by pressing and sliding the stop member and the slider is provided, that is, the immovable wall side Since the drive means is provided on the drive door, the power supply wiring of the drive means is not dragged by the movement of the sliding door side. As a result, disconnection, short-circuit, electric leakage, electric shock, etc. can be prevented, and the wiring is exposed outside. This is preferable in terms of appearance.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a sliding door provided with a free stop release device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a free stop release device according to the present invention.

FIG. 3 is a diagram showing a free stopper and a free stop release device.

FIG. 4 is a schematic perspective view showing another free stop release device according to the present invention.

FIG. 5 is a schematic explanatory view showing the operation of another free stop release device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Free stop release device 2 Sliding door 3 Elastic roller (stop member) 4 Rail 5 Slider 6 Solenoid (drive means) 7 Control unit 9 Cam (drive means)

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Claims (1)

(57) [Claims] 1. A free stop for a sliding door, comprising: a door wheel engaged with a rail provided along an opening / closing direction of the sliding door; and a self-closing means provided for the sliding door to self-close, wherein the sliding door is stopped during the opening / closing operation. A slider provided in parallel with the rail on which a stop member for stopping and locking the opening operation of the sliding door when the sliding door has moved to a predetermined opening position is pressed and slid, and a fluid pressure or an electromagnetic force. Control means for operating the drive means to move the slider forward and backward on the door frame side or the wall side, and for activating the drive means to cancel the stop operation by pressing and sliding the stop member and the slider. A free stop release device comprising: