JPH08109779A - Safety device for shutter - Google Patents

Abstract

PURPOSE: To ensure the stable operation for detecting an obstruction without a complicated check on the consumption of a battery with a simple structure. CONSTITUTION: One end part of a flexible belt 10 including a signal conductor extending from an opening and closing control part 7 to an obstruction detecting switch is installed to one side part of a seat plate 3, and the other end part of the flexible belt 10 is fixed within a guide rail 8 situated in the middle of an opening part height. When a shutter curtain 2 is raised and lowered, the flexible belt 10 is raised and lowered following the vertical movement of the seat plate 3 raised and lowered within the opening part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a shutter which prevents accidents due to a person or an obstacle being caught or damage to the shutter curtain when the shutter curtain of an electric shutter for opening and closing an opening is moved up and down. It is a thing.

[0002]

2. Description of the Related Art Conventionally, when a shutter curtain of an electric shutter that opens and closes an opening is lowered, an obstacle is attached to a seat plate of the shutter curtain in order to prevent accidents caused by a person or an obstacle being caught and damage to the shutter curtain. When a detection switch is provided and an obstacle is detected by the obstacle detection switch, a detection signal is sent from the wireless transmission unit arranged in the hollow portion on the one side of the seat plate to the opening / closing control unit that controls the lifting operation of the shutter opening / closing drive. Is configured to stop the descent of the shutter.

However, since this device uses a battery as a power source for operating the above-mentioned radio transmitter, the obstacle detection switch detects an obstacle due to the power consumption due to the repeated detection operation of the obstacle. However, it has a serious safety defect that the obstacle detection signal is not transmitted to the opening / closing control unit and causes damage accidents such as shutter curtains and obstacles and personal injury.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation and was devised to eliminate the conventional drawbacks. The object of the present invention is to provide a shutter with a simple structure. When the curtain descends, it is possible to reliably stop the descent operation by detecting an obstacle to ensure safety, and to secure a stable obstacle detection operation without the troublesome checking of the battery consumption level. Therefore, it is an object of the present invention to provide a shutter safety device that can improve the reliability of detection operation while improving the maintainability of inspection and maintenance.

[0005]

In order to solve the problem, the technical means adopted by the present invention is an obstacle detection switch on a seat plate of a shutter curtain which is elevated by being guided by a guide rail erected in a building opening. A safety device for a shutter, in which an opening / closing drive is stopped by detecting an obstacle of the detection switch, wherein a signal wire from the opening / closing control unit to the obstacle detection switch is provided on one side of the seat plate. The one end of the mixed flexible belt is mounted, and the other end of the flexible belt is fixed to the guide rail located at the middle of the height of the opening so that the shutter curtain can be opened and closed when the shutter curtain is moved up and down. The flexible belt is configured to be moved up and down by following up and down movements of a seat plate that moves up and down.

[0006]

Therefore, according to the present invention, it is possible to improve the reliability of the obstacle detection when the shutter curtain is moved up and down, and to maintain the reliable detection operation for a long period of time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in detail based on an embodiment shown in the drawings. 1 and 2, reference numeral 1 denotes a shutter provided in a building opening, and the shutter 1 forms a shutter curtain 2 by connecting a large number of slats 2a, 2a ... A seat plate 3 is connected to the lowermost end, and the shutter curtain 2 is attached to the winding shaft 5 in the shutter case 4 above the opening.
A guide rail in which both end edges of the shutter curtain 2 are erected on both sides of the opening by controlling the rotation of the opening / closing driver 6 connected to the winding shaft 5 by the opening / closing controller 7. It is configured so that the openings are opened and closed by being guided by 8, 8.

As shown in FIGS. 3A and 3B, on the lower surface of the seat plate 3, there is a seat plate switch mechanism 9 in which a plurality of obstacle detection switches such as micro switches are incorporated in the opening width direction. When the shutter curtain 2 is suspended freely and vertically, and the upper surface of the obstacle comes into contact with the lower surface of the seat plate switch mechanism 9 during the lowering operation of the shutter curtain 2, an obstacle detection switch (not shown) in the seat plate switch mechanism 9 is provided. Is closed, and the conductive state is sent to the opening / closing control unit 7 via the flexible belt 10.

The flexible belt 10 has elastic cores formed in the shape of a long flat plate with reinforcing core wires 11 and 11 made of aramid fiber installed on both sides, and signal conductors 12 and 12 parallel to the central portion. The flexible belt 10 is inserted through one of the guide rails 8 and folded back below the lowermost slat 2a, and one end of the flexible belt 10 is connected to one end face side thereof. Signal of the obstacle detection signal by connecting the signal conductors 12 in the flexible belt 10 from the connector 13 to the obstacle detection switch of the seat plate switch mechanism 9 through the connection line 14 A transmission line is formed.

On the other hand, the other end of the flexible belt 10 is
It is fixed to the connector 15 provided in the guide rail 8 corresponding to the middle of the opening height H, that is, the height of 1 / 2H,
The signal conductors 12 and 12 of the flexible belt 10 are connected to the opening / closing controller 7 from the connector 15 via a signal cable 16.

In the above structure, when an obstacle exists in the shutter opening / closing area when the shutter curtain 2 is descending, the seat plate switch mechanism 9 provided on the lower surface of the seat plate 3 that descends is located above the obstacle. Simultaneously with the contact, the seat plate switch mechanism 9 is pushed upward and the obstacle detection switch (not shown) is closed.
It is delivered to the flexible belt 10 via the connector 13 and further transmitted from the flexible belt 10 to the opening / closing control unit 7 through the connector 15 provided in the guide rail 8 to be connected to the winding shaft 5. The rotation drive of the opening / closing drive 6 is cut off, and the descent of the shutter curtain 2 is stopped, so that an accident due to a person or an obstacle being caught or damage to the shutter curtain 2 itself is prevented.

In the raising / lowering operation of the shutter curtain 2 as described above, the flexible belt 10 moves in the guide rail 8 in response to the raising / lowering operation of the seat plate 3 as shown in FIGS. 4 (a) and 4 (b). Is gradually folded back or guided to move up and down, so that the obstacle can be detected reliably and promptly without affecting the up and down movement of the shutter curtain 2.

[0013]

In summary, according to the present invention, an obstacle detection switch is provided on a seat plate of a shutter curtain which is elevated by being guided by a guide rail erected in a building opening, and the opening and closing is performed by detecting an obstacle by the detection switch. A shutter safety device for stopping a driving machine, wherein one end of a flexible belt containing a signal lead wire from an opening / closing control unit to an obstacle detection switch is attached to one side of the seat plate. With
The other end of the flexible belt is fixed to a guide rail positioned at the middle of the height of the opening, and when the shutter curtain moves up and down, it follows the vertical movement of the seat plate that moves up and down the opening. Since the flexible belt is configured to be lifted and lowered, it has a simple structure, but when the shutter curtain descends, it is possible to reliably stop the descending operation by detecting an obstacle to ensure safety and cumbersome. Stable operation of obstacle detection can be ensured without checking the battery consumption level. Therefore, while improving the maintainability of inspection and maintenance, the reliability of detection operation is improved to ensure smooth and safe operation. This is a very useful new effect that the opening and closing operation of the shutter curtain can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is an overall front view.

FIG. 2 is an upper sectional view of the same.

FIG. 3A is a perspective view of a main part showing a connection between a seat plate switch mechanism and a flexible belt. (B) is a cross-sectional view of the main part of the same.

FIG. 4A is an operation explanatory view showing a lifted state of the shutter curtain. (B) is an operation explanatory view showing the same when the shutter curtain is fully opened.

[Explanation of symbols]

 2 Shutter curtain 3 Seat plate 6 Opening / closing drive 7 Opening / closing control unit 8 Guide rail 10 Flexible belt 12 Signal lead wire

Claims (1)

[Claims] 1. An obstacle detection switch is provided on a seat plate of a shutter curtain that is elevated by being guided by a guide rail standing upright in a building opening, and an opening / closing drive is stopped by detecting an obstacle by the detection switch. A safety device for a shutter, wherein one end of a flexible belt mixed with a signal lead wire from an opening / closing control unit to an obstacle detection switch is attached to one side portion of the seat plate, and The other end is fastened to the guide rail located at the middle of the opening height, and when the shutter curtain is moved up and down, the flexible belt is moved up and down by following the vertical movement of the seat plate that moves up and down the opening. A shutter safety device characterized by being configured as follows.