JPH0636216Y2 - Door collision detection device for automatic doors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a device for detecting that a door of an automatic door has collided with a passing body or the like.

2. Description of the Related Art An automatic door is a system in which a door is connected to a belt wound around a drive pulley and a driven pulley driven by a motor, and the belt is rotated forward and backward to open and close the door. To detect a collision with a passing object, the moving speed of the door is detected by a door position detection feedback pulse, etc., and the moving speed is lower than a predetermined moving speed. It has detected that it collided with etc.

Problems to be Solved by the Invention With such a collision detection device, since the moving speed of the door is detected and the actual moving speed is compared with the set moving speed, the structure becomes very complicated and , There is a slight time delay from the collision of the door with the passing object to the detection, and it takes time to move the door in the opposite direction and avoid the collision after the collision. When the person is a person who passes by, the person may be hurt.

Therefore, an object of the present invention is to detect a collision of a door with a passing body or the like immediately without a time delay, and to prevent a malfunction when the outside air temperature becomes high and to open and close the door smoothly. An object of the present invention is to provide a door collision detection device for an automatic door.

Means and Actions for Solving the Problems In an automatic door provided on the door frame 4 so that the door 7 can be opened and closed by a motor 8 or the like, the door 7 has a hollow shape made of a rubber material and has a hollow portion 22. The door stop member 18 having a through hole 24 that opens to
The hollow portion 22 of the door 7 is connected to a pressure sensor 30 that outputs a door collision signal when the pressure inside the hollow portion 22 of the door contact member 18 suddenly rises.
Connected to a transmitter 31 provided on the door frame 4, a receiver 32 provided on the door frame 4, a coil 45 connected to a power supply 44 provided on the door frame 4, and a coil 46 connected to the pressure sensor 30 and the transmitter 31. Then
A door collision detection device for an automatic door, in which the coil 45 and the coil 46 face each other when the door 7 is in the closed position to supply power to the pressure sensor 30 and the transmitter 31 by an electromagnetic induction action.

As a result, when the door 7 collides with a passing body or the like, the door stop member 18
When the door 7 is crushed and the pressure in the hollow portion 22 is rapidly increased, and the door contact member 18 is crushed, the pressure sensor 30 immediately outputs a door collision signal. It can be detected immediately without delay, and when the air in the hollow portion 22 thermally expands, the air pressure in the hollow portion 22 tries to rise, but since the thermal expansion of the air is gradual, air is transmitted to the outside from the translucent 24. , The pressure sensor 30 does not operate, and the pressure sensor 30 does not malfunction when the outside air temperature becomes high, and the door collision signal of the pressure sensor 30 is transmitted by the transmitter 31 and the door frame Receiver 32 provided in 4
Since it is received by the electric sensor, electric wiring for transmitting the door collision signal to the door frame 4 side becomes unnecessary, and the pressure sensor 30, the receiver 31
Since electric power is supplied from the side of the door frame 4 by the electromagnetic induction action of the coil 45 and the coil 46, wiring for power supply is unnecessary, and in combination, wiring is not required for the door frame 4 and the door 7. The door can be opened and closed smoothly without the wiring getting in the way when the door 7 is opened and closed.

Example As shown in FIG. 2, the automatic door comprises a rectangular door frame 4 composed of left and right vertical frames 1, 1, a blind 2, and a lower cross member 3, and a fixed side is fixed to one side of the door frame 4. The door 5 is mounted to form the opening 6, and the door 7 for opening and closing the opening 6 is provided so as to be movable left and right, and the drive pulley 9 connected to the motor 8 in the blind 2 is provided.
A belt 11 is wound around the driven pulley 10 and the door 7, and the door 7 is connected to the belt 11 by a connector 12. The controller 13 provided in the seamless 2 drives and controls the motor 8 to open and close the door 7. Is done.

The door 7 framed the left and right rigid frames 14,14, the upper frame 15 and the lower frame 16 in a square shape, and mounted the glass 17 inside the frame.
A rubber door stop member 18 is attached to one of the frames 14, and when the door 7 closes and moves to the origin, the door stop member 18 switches to the origin switch.
It is designed to activate 19.

As shown in FIGS. 1 and 3, the door contact member 18 has a hollow elongated shape having a hollow portion 22 by a plate-shaped base portion 20 and an arc-shaped portion 21, and is attached to both sides of the plate-shaped base portion 20. While the groove 23 is formed over the longitudinal direction, the upper and lower ends of the hollow portion 22 are closed, and open to the outside by through holes 24 formed above and below the arc-shaped portion 21, the inside of the hollow portion 22, For example, a concave portion 25 and a convex portion 26 are formed on the inner surface of the plate-shaped base portion 20 and the inner surface of the arc-shaped portion 21 over the longitudinal direction so that air can flow into the hollow portion 22 even if the arc-shaped portion 21 is crushed. There is.

A concave groove 27 is formed on the outer wall 14a of the rigid frame 14, and a pair of projecting pieces 28, 28 integrally formed at the opening end of the concave groove 27.
Are fitted in the mounting recessed grooves 23, 23 on both sides of the door contact member 18 so that the door contact member 18 is mounted in the recessed groove 27, and the arcuate portion 21 projects outward from the outer wall 14a. At the same time, one end of the connecting pipe 29 disposed in the hollow portion 14 'of the rigid frame 14 is open-connected to the hollow portion 22 of the door-stop member 18, and the other end is connected to the pressure sensor 30.

Because of this, when the door 7 collides with a passing body or the like, as shown in FIG. 4, the arcuate portion 21 of the door-stop member 18 is crushed and the volume inside the hollow portion 22 is rapidly reduced. The pressure of the air in the portion 22 rises, and the rise in the pressure passes through the connecting pipe 29 to turn on the pressure sensor 30 to detect that the door 7 has collided with a passing body or the like.

At this time, the hollow portion 22 is opened to the outside through the through hole 24, but the amount of air in the hollow portion 22 discharged to the outside through the through hole 24 is extremely small, and the air pressure in the hollow portion 22 is To rise.

Further, when the air in the hollow portion 22 thermally expands, the air pressure in the hollow portion 22 tries to rise, but since the thermal expansion of the air is gradual, the air is discharged to the outside from the through hole 24 and the pressure is increased. Since it hardly rises, the pressure sensor 30 does not turn on, and does not malfunction when the outside air temperature becomes high.

The door collision detection signal detected by the pressure sensor 30 is transmitted by a transmitter 31 provided on the door side, and the transmitted signal is received by a receiver 32 provided on the door frame side, as shown in FIG. Then, the motor 8 is sent to the controller 13, and the motor 8 is stopped and reversely rotated so as to avoid a collision between the door 7 and a passing body or the like.

The transmitter 31 and the receiver 32 are of a wireless type.

Also, when the door 7 is closed and moved to the origin, the arcuate portion 21 of the door contact member 18 is crushed and the pressure sensor 30 operates to detect. If the transmitter 31 outputs a door collision detection signal at this time, , The door 7 is normally opened and closed to return to the closed origin and collide with a passing object, but a door collision detection signal is sent to the controller 13 to move the door 7 to the open side. It is necessary not to output the door collision detection signal from the transmitter 31 when 7 is closed and moved to the origin.

For this purpose, as shown in FIG. 5, the origin switch is connected to the circuit 33 connecting the output side of the pressure sensor 30 and the input side of the oscillator 31.
If the origin switch 19 is provided on the door 7, the pressure sensor 30 and the transmitter 31 are discontinuous, or the circuit 35 for connecting the pressure sensor 30, the transmitter 31 and the power source 34 as shown in FIG.
When the origin switch 19 is operated on the door 7, the pressure sensor 30 and the transmitter 31 are discontinued from the power supply 34, and when the door 7 is closed and moved to the origin, a door collision detection signal is output from the transmitter 31. You should not do it. In the case of a double door type automatic door, two origin switches may be connected in parallel.

Further, as shown in FIG. 7, a guide 36 is attached to the upper frame 15 of the door 7.
A slide plate 37 is slidably provided along the door so that the upper part of the hollow 22 of the door contact member 18 is opened and closed by this slide plate 37, and the slide plate 37 is compressed from the door contact member 18 by a compression spring 38. The slide plate 37 is held at a position where it projects outward and closes the upper portion of the hollow portion 22, and an opening 39 is provided on the projecting end side of the slide plate 37, and the slide plate 37.
Is formed so as to face the upper part of the hollow portion 22 when it moves to be substantially flush with the door stop member 18 against the compression spring 38, and when the door 7 closes and moves to the origin, the slide plate 37 becomes the rigid frame 1. You may make it contact | abut and move until it becomes substantially flush with the door stop member 18.

With this configuration, when the door 7 is closed and moved to the origin, the hollow portion 22 of the door contact member 18 is opened outward from the upper portion, and the arcuate portion is formed.
Even if 21 is crushed, the air pressure in the hollow portion 22 does not rise and the pressure sensor 30 does not operate, so that no door collision detection signal is output.

As shown in FIG. 8, the power supply to the pressure sensor 30 and the transmitter 31 is such that the coil 45 is connected to the power source 44 provided on the door frame side, and the coil 46 is connected to the pressure sensor 30 and the transmitter 31. Then, when the door 7 is completely closed, the coil 45 and the coil 46 are completely opposed to each other and power is supplied by the electromagnetic induction action. The coil 45 and the coil 46 start facing each other when the door 7 is at a position slightly open from the closed position.
When the door 7 is in the closed position, the coil 45 and the coil 46 are completely opposed to each other. Therefore, when the door 7 is at a position slightly open from the closed position, the coil 45 and the coil 46 start supplying electric power by the electromagnetic induction action.

Effect of the Invention When the door 7 collides with a passing body or the like, the door contact member 18 is crushed and the pressure in the hollow portion 22 suddenly rises, and the pressure sensor 30 outputs a door collision signal so that the door 7 passes through the passing body or the like. The pressure sensor 30 outputs a door collision signal as soon as the door contact member 18 is crushed.
It is possible to immediately detect that the vehicle has collided with a passing body without any time delay.

Further, since the hollow portion 22 of the door stop member 18 is opened to the outside through the through hole 24, when the air in the hollow portion 22 thermally expands, the air pressure in the hollow portion 22 tends to rise, but Since the thermal expansion is gradual, air is exhausted to the outside from the through hole 24 and the pressure hardly rises. Therefore, the pressure sensor 30 does not operate and does not malfunction when the outside air temperature becomes high.

Further, since the door collision signal of the pressure sensor 30 is transmitted by the transmitter 31 and is received by the receiver 32 provided in the door frame 4, electric wiring for transmitting the door collision signal to the door frame 4 side becomes unnecessary, Moreover, since electric power is supplied to the pressure sensor 30 and the transmitter 31 from the door frame 4 side by the electromagnetic induction action of the coil 45 and the coil 46, wiring for power supply is not required, and these together work with the door frame 4. No wiring is required for door 7
The wiring can be opened and closed smoothly without opening and closing the wiring.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view of a door-stop member, FIG. 2 is a schematic front view of an automatic door, FIG. 3 is a cross-sectional view of a door-stop member attaching portion, and FIG. Collision detection operation explanation sectional view,
5, 6 and 7 are explanatory views of different embodiments of the collision detection signal output prohibiting mechanism, and FIG. 8 is an explanatory view showing an embodiment of power supply. 4 is a door frame, 7 is a door, and 18 is a door stop material.

Claims (1)

[Scope of utility model registration request] 1. An automatic door provided on a door frame 4 so that the door 7 can be opened and closed by a motor 8 or the like. The door 7 is made of a rubber material to have a hollow shape, and a hollow portion 22 thereof is opened to the outside. A door contact member 18 having a through hole 24 is mounted, and a hollow portion 22 of the door contact member 18 is provided in the door 7 and a door collision signal is generated when the pressure in the hollow portion 22 of the door contact member 18 rapidly rises. Is connected to a pressure sensor 30 which outputs a signal, the pressure sensor 30 is connected to a transmitter 31 provided in the door 7, a receiver 32 is provided in the door frame 4, and a coil 45 is provided in a power source 44 provided in the door frame 4. And the coil 46 is connected to the pressure sensor 30 and the transmitter 31, and when the door 7 is in the closed position, the coil 45 and the coil 46 face each other and power is supplied to the pressure sensor 30 and the transmitter 31 by electromagnetic induction. A door collision detection device for an automatic door, characterized by being supplied.