JPH088239Y2 - Obstacle detection device for architectural shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an obstacle detection device for a building shutter that detects an obstacle while the shutter curtain is descending.

[Problems to be Solved by Prior Art and Invention] Generally, in this type of building shutter, when an obstacle is encountered while the shutter curtain is descending, safety measures are taken to detect the obstacle and perform an emergency stop. Has been. By the way, these obstacle detection means are, for example, a seat plate switch that detects that an obstacle has come into contact with the seat plate, or a proximity switch that uses infrared rays to detect that a person or the like is moving. Kimono has been adopted and has achieved some results.

On the other hand, since the left and right ends of the seat plate that fit into the guide rail are narrow, it is not possible to provide a detection switch like the former to that part, and the latter switch means does not move. The reality is that it is not possible to detect such things. In such a reality, since the guide rail is grooved, it is possible that the umbrella or cane may be left there while leaning against it so that the umbrella or cane does not fall over. In reality, there are obstacles that cannot be detected by the detection means, and it is necessary to take measures for this.

[Means for Solving the Problem] The present invention has been made in view of the above circumstances and was devised with the object of providing an obstacle detection device for a building shutter that can eliminate these drawbacks.
In a building shutter configured to vertically move the shutter curtain up and down by forward and reverse driving of a switch, a seat plate provided at a lower end portion of the shutter curtain has a flange protruding in a horizontal direction from a vertical portion. The left and right ends of the flange portion are notched so that the vertical end portions are loosely fitted in the guide rails that guide the vertical movement of the left and right end portions of the shutter curtain. The seat plate is characterized by being provided with an inclination detection means for determining that the vehicle is tilted left and right with respect to the normal state as obstacle detection and outputting a detection signal.

The present invention, with this configuration, can reliably detect an obstacle when the guide rail hits the obstacle.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a shutter curtain of an electric shutter installed in an opening of a building. The shutter curtain 1 guides left and right side edges to guide rails 3 based on forward and reverse driving of a switch 2. While being moved up and down, the opening and closing of the opening and the like are the same as conventional ones.

A seat plate 4 is provided at the lowermost end of the shutter curtain 1, and the seat plate 4 is formed in a substantially inverted T shape with a vertical portion 4a facing vertically and a flange portion 4b facing horizontally. However, both ends of the flange portion 4b are cut out so that both ends of the vertical portion 4a are loosely fitted to the guide rails 3. Further, a tilt detecting sensor 5 is provided on the flange portion 4b near the cutout portion.
The tilt detection sensor 5 detects when the seat plate 4 is tilted left and right with respect to the normal state. The detection signal is sent from the transmitter 7 provided on the seat plate 4 to the shutter case 6 Is transmitted to the receiver 8 provided in the magsa part of the receiver, and the receiver 8 receiving this outputs an emergency stop command to the control panel 9 of the switch 2 to stop the descent of the shutter curtain 1. It has become.

In the embodiment of the present invention configured as described above, the shutter curtain 1 is vertically moved up and down by the forward and reverse driving of the switch 2. However, when the shutter curtain 1 descends, the guide rail 3 is moved. If the umbrella or cane is still leaning against it, it will become an obstacle and hinder the descent of the shutter curtain 1. That is, when the shutter curtain 1 descends and one of the left and right ends of the seat plate vertical portion 4a comes into contact with an obstacle leaning against the guide rail 3, the descending of the side is disturbed, whereby the seat plate 4 is prevented. Is inclined. Then, the inclination detection sensor 5 detects this and outputs a detection signal to the transmitter 7, and the detection signals to the receiver 8 and the control panel 9 are transmitted, and the control unit 9 sends an emergency signal to the switch 2. Outputs stop command and shutter curtain 1
Will make an emergency stop.

As described above, in the embodiment of the present invention, the guide rail 3 is provided with a seat plate 4 which should be in an original state of an obstacle that cannot be detected by a conventional switch such as a seat plate switch.
Is detected when the vehicle tilts to the left and right, and the descent is stopped by this. Therefore, shutter curtain 1
It is possible to prevent the reverse winding and the like from occurring and improve the safety.

Incidentally, in carrying out the present invention, it may be used alone, but it goes without saying that the existing switch means such as a seat plate switch may be used in combination. Further, for the drive control of the switch 2 after the obstacle is detected, the known control method for detecting the obstacle can be used as it is.

[Advantages] In summary, since the present invention is configured as described above, when the umbrella or cane leaning against the guide rails obstructs the descent of the shutter curtain, the flange is used. The vertical portion of the seat plate, which is loosely fitted into the guide rail due to the notches at both ends of the part, is restricted by the obstacles in the guide rail so that the seat plate tilts. The inclination detecting means determines that the obstacle is detected, and the detection signal is output. Therefore, it is possible to improve the safety by reliably detecting something that cannot be detected by the obstacle detecting means that cannot be arranged even in the guide rail like the conventional seat plate switch. become.

[Brief description of drawings]

The drawings show an embodiment of an obstacle detecting device for a building shutter according to the present invention. FIG. 1 is a front view of the building shutter, and FIG. 2 is an operation explanatory view showing an obstacle detecting state. 3 is a horizontal sectional view of the guide rail portion, and FIG. 4 is a block circuit diagram of the detection system. In the figure, 1 is a shutter curtain, 2 is a switch, 3 is a guide rail, 4 is a seat plate, and 5 is an inclination detection sensor.

Claims (1)

[Scope of utility model registration request] 1. A construction shutter configured to vertically move a shutter curtain up and down by driving a switch forward and reverse, wherein a seat plate provided at a lower end portion of the shutter curtain has a vertical portion and a horizontal portion. The flange part projecting in the direction, the left and right ends of the flange part are notched, and both ends of the vertical part are loosely fitted in the guide rails that guide the vertical movement of the left and right ends of the shutter curtain. And
An obstacle detecting device for a building shutter, wherein the seat plate is provided with an inclination detecting unit that determines that the seat is inclined to the left and right with respect to a normal state and detects the obstacle and outputs a detection signal.