JPH04166591A - Obstacle detecting device of opening and closing body - Google Patents

Abstract

PURPOSE:To simplify mechanism by providing a driving member to vary an insertion state against a linear body of a movable member of an opening and closing body based on the displacement of a contact detecting member of the opening and closing body, and providing a switch detecting the displacement applied to the linear body. CONSTITUTION:During the falling of the lower end panel 1, when a movable seat plate 3 is brought into contact with an obstacle 15 to vary upward, a driving pin 4 is placed on turn a driving lever 5. After that, a movable member 6 is rotated to twist a wire 7, and the falling of the panel 1 can not be made. Then, panels on the upper part continue falling, their weight is applied to the lower end panel 1, and when it is in excess of tensile force of a spring 10 in a case 14 placed to the upper part of an opening section of a building, a micro- switch 11 is operated. In addition, power of a driving motor is disconnected by the switch 11, and the falling of the panel is suspended.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a safety device for an opening/closing body such as a shutter, and particularly to an obstacle detection device for an opening/closing body that detects an obstacle when the opening/closing body is lowered. It is.

(Prior art) Opening/closing bodies installed at building entrances, such as shutters made of thin steel plates or light alloy plates called slats, shutters made of panels, etc., are increasingly being opened and closed by electric motors, etc. ing.

In particular, in recent years, so-called unmanned control, in which opening and closing are performed by program control, remote control, etc., has become widespread. In an unmanned opening/closing body, there is a particular danger that people or objects may become trapped during the descent. To avoid this, for example, as is known in electric shutters, an obstacle detector such as a tape switch is attached to the lower edge of the shutter, and if a person or object comes into contact with the shutter while it is lowering, the shutter will automatically stop lowering. Consideration has been taken to ensure that it stops.

However, wiring is required from a detector such as a tape switch to the control circuit of the motor, but since the detector such as a tape switch is attached to the lower edge of the shutter where winding and unwinding is performed, wiring There is a problem.

In order to avoid this, in the safety device described in Japanese Utility Model Publication No. 57-21998, a pressure sensor consisting of a tape switch or the like is installed continuously along the guide groove of the shutter curtain. The pressure device is actuated by a detection signal from an obstacle detector such as a tape switch provided on the lower edge of the pressure sensor, which is converted into a mechanical pressure signal to activate the pressure sensor. therefore,
Although the electrical detection signal from the obstacle detector is not directly taken out to the building frame, since the obstacle detector requires a power source, it is recommended to install a battery on the shutter curtain side as a power source. However, there is a problem of wear and tear, and when power is supplied from the building frame side to the shutter curtain side, there are still problems regarding the supply method.

There is also a known method that does not include a power supply on the shutter side.

The obstacle detection device for an electric opening/closing body described in Japanese Utility Model Application Publication No. 63-67199 is such that the opening/closing body, which is opened and closed by the drive of a switch, is always biased in a direction to wind up a cord. A string winding device is provided that lets out the string when activated, and the string is restricted from drawing out when it comes into contact with an obstacle, and the tip end of the string is urged with a force greater than the winding force of the string winding device. The detection switch is activated by the displacement operation of the actuating body in conjunction with the string moving toward the closing side against a large biasing force, due to the regulation of the cord unwinding of the regulating body due to the displacement operation of the sensing body that has come into contact with an obstacle. It operates. This obstacle detection device does not use a switch to directly detect obstacles, so it can solve problems associated with power supply, but it has a complicated mechanism and requires adjustment of the force relationship, as well as problems with opening and closing parts. It is necessary to pay out the cord and wind it up each time the cord is opened and closed, which poses a problem in terms of service life.

The electric shutter emergency stop device described in Japanese Utility Model Application Publication No. 2-30498 does not require a power source on the shutter side, but it requires a switch to be installed above and below the inner wall of the guide rail, which requires wiring, switches, etc. Electrical components must be installed inside the guide rail, which is exposed to wind and rain, which poses problems in terms of insulation and long-term operational stability.

(Problems to be Solved by the Invention) The present invention has been made in order to solve the above-mentioned problems, and is capable of detecting contact with an obstacle using a simple mechanism. It is an object of the present invention to provide an obstacle detection device for an opening/closing body that can be provided on the side of the opening/closing body.

(Means for Solving the Problems) The present invention provides an obstacle detection device for an opening/closing body, which includes a striated body disposed along a moving path of the opening/closing body that opens and closes vertically, and a striated body that pushes the striated body inward. A movable member attached near the lower part of the opening/closing body, a contact sensing member provided at the lower part of the opening/closing body, and an insertion state of the movable member into the linear body based on the displacement of the contact sensing member. a driving member that changes;
The device is characterized in that it includes switching means for detecting displacement applied to the filament.

(Function) The present invention provides an obstacle detection device for an opening/closing body, in which a filamentous body is arranged along the movement path of the opening/closing body that opens and closes vertically, and a striated body is arranged near the lower part of the opening/closing body with respect to the filamentous body. The movable member attached to is moved along the filament while being inserted.

Under normal conditions, the movement of the movable member does not exert a large force on the filament. When the contact sensing member provided at the lower part of the opening/closing body comes into contact with a person or object, the contact sensing member is displaced. Based on the displacement, the driving member changes the insertion state of the movable member with respect to the filamentous body so as to exert a larger force than usual on the filamentous body. Thereby, the safety device can be activated by detecting the displacement applied to the filament body by the switching means.

(Example) FIG. 1 is a schematic diagram of an embodiment of an obstacle detection device for an opening/closing body according to the present invention, and FIG. 2 is a detailed diagram of each part of FIG. 1. In the figure, 1 is the lower end panel, 2 is the seat plate holding material, 3 is the movable seat plate, 4 is the drive bin, 5 is the drive lever, 6 is the movable member,
7 is the wire, 8 is the turnbuckle, 9 is the detection lever,
10 is a spring, 11 is a microswitch, 12 is a stopper, 13 is a bracket, 14 is a case, and 15 is an obstacle.

The lower end panel 1 has a seat plate holding member 2 attached to its lower part, and has a movable seat plate 3 suspended from its lower edge. 1st
As can be seen from FIG. 2(A), which is a cross-sectional view taken along line A-A in the figure, the movable seat plate 3 is suspended within the space of the seat plate holding member 2, and is easily resisted by force from below. is displaced upward. Therefore, when the movable seat plate 3 comes into contact with the obstacle 15 while the panel is lowering, the movable seat plate 3 is displaced upward relative to the seat plate holding member 2. A drive bin 4 is attached to the movable seat plate 3.

A movable member 6 is rotatably attached to the side surface of the lower end panel 1. In this embodiment, the movable member 6 is configured as a columnar body, and a through hole is formed in the through hole.
Wire 7 is interpolated. As can be seen from the side view of FIG. 2(B), the drive lever 5 is fixed to the rotation shaft of the movable member 6. The drive lever 5 engages the drive pin 4 mentioned above and is normally in the position shown in solid lines. When the movable seat plate 3 hits an obstacle and is displaced upward, the drive bin 4 is displaced along the elongated hole to the position 4a indicated by the dotted line in the figure, the drive lever 5 is rotated to the position 5a indicated by the dotted line in the figure, and the movable member 6 It is configured to rotate.

As shown in FIG. 1, the wire 7 is disposed along the movement path of the shutter panel, for example, along a guide rail (not shown), extends into the case 14 at the top of the opening of the building, and turns. Detection lever 9 via buckle 8
It is connected to the.

The lower end of the wire 7 is fixed to the building frame side. The detection lever 9 is rotatably supported by a bracket 13, biased by a spring 10 in a direction to tension the wire 7, and stopped by a stopper 12 at a position where the microswitch 11 is not operated. When the detection lever 9 rotates counterclockwise against the spring 10, the microswitch 11 is operated.

Normally, when the movable member 6 inserts the wire 7, the through hole is oriented vertically as shown in FIG. 2(C), so the movable member 6 slides on the wire 7. Even though
The force exerted on wire 7 is smaller than the tension of spring 10 and does not operate microswitch 11.

When the movable seat plate 3 comes into contact with an obstacle, the movable member 6 rotates as described above, resulting in the state shown in FIG. The frictional force with 7 increases, making it impossible for the lower end panel to descend. As the panels above continue to descend, their weight is applied to the bottom panel and when the tension of the spring 10 is exceeded, the microswitch 11 is actuated. The microswitch 11 can be used to turn off the power to a drive motor (not shown) or operate a safety device, such as operating a brake mechanism, to stop the panel from lowering.

FIG. 3 is a modification example in which a channel member is used as the filament instead of the wire in FIG. 1.

Figure (A) is a schematic perspective view, Figure (B) is a cross-sectional view of a portion where the movable member is located together with the guide rail, and Figure (C) is a schematic perspective view of Figure (B). FIG. In the figure, 21 is a movable member, 22 is a channel member with a C-shaped cross section, 23 is a guide member, 24 is a spring, 25 is a micro switch, 26 is a stopper, 2
7 is a guide rail, and 28 is a panel.

The channel member 22 is loosely fitted into a guide member 23 provided along the movement path of the shutter panel.

The guide member 23 is the channel member 22 in this embodiment.
It is fixed to the building frame over almost the entire length of the
The short members may have the same cross section and may be configured to fit into the channel member 22 at at least two positions, upper and lower. The upper part of the channel member 22 is connected to the spring 2
4 and positioned by a stopper 26. The microswitch 25 is connected to the channel member 22
The channel member is engaged directly or through an intermediate member so as to be actuated by downward movement of the channel member.

Although the movable member 21 has a U-shaped cross section in this embodiment, its operation is performed by a mechanism similar to that explained in FIGS. It is rotatably attached to the seat plate of a panel (not shown) so as to be parallel to the member 22, and slides loosely on the channel member as the panel goes up and down.

Therefore, no large force is applied to the channel member 22 due to the movement of the movable member 21.

When the contact sensing member comes into contact with an obstacle, a force is applied to rotate the movable member 21 as described above, and the channel member 22
As the insertion state of the microswitch 25 changes, the frictional force between the inner wall of the opening of the movable member 21 and the side surface of the channel member 22 increases, and a force that pulls the channel member 22 downward acts. can be operated.

By the operation of the microswitch 25, as in FIG.
A safety device can be activated to stop the panel from lowering.

FIG. 4 is a sectional view of another embodiment showing a state in which the filament body and the movable member are inserted. In the figure, 31 is a columnar body with a circular cross section, 32 is a sawtooth groove provided around the columnar body, and 33 is a movable member. The hole in the portion where the movable member 33 penetrates the columnar body 31 is provided to widen toward the bottom so that it becomes wider downward. Since the movable member 33 normally descends so that its lower edge does not come into contact with the columnar body 31 as shown, the force exerted on the columnar body 31 is small. Movable member 3 detects an obstacle
3 rotates, its lower edge engages with the serrated groove of the columnar body 31, and the engagement force between the movable member and the filamentous body can be increased. Note that the columnar body 31 is a square column, and the movable member 33
The through hole may be shaped accordingly.

In the above-mentioned embodiment, the movable member is rotated to change the insertion state with the wire, channel member, etc., but the invention is not limited to this, and for example, the movable member The distal end of the contact sensing member may be configured with two arms that can be opened and closed, and when the contact sensing member senses an obstacle, the striated body may be strongly pinched, thereby changing the state of insertion into the movable member. In addition, when using a columnar body having a groove as explained in FIG. 4 as the striated body, a movable member is provided with a protrusion that moves in and out of the columnar body, and the movement of the protrusion in and out is linked to the sensing member. You can.

In addition, it goes without saying that the above-mentioned obstacle detection device may be provided on both sides of the opening/closing body.

The embodiments in which the present invention is applied to panel shutters have been described above, but it is clear that the present invention can also be applied to shutters using slats, and the present invention can also be applied to other types of opening/closing bodies. be able to.

(Effects) As is clear from the above explanation, according to the present invention, in the obstacle detection device for an opening/closing body, there is no problem with wiring, although the switching means is not mounted on the opening/closing body, and the switching means is mounted on the top of the opening/closing body. Because it can be installed inside the case,
This has the effect of providing an obstacle detection device for an opening/closing body in which the electric circuit portion is not affected by wind and rain.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of an obstacle detection device for an opening/closing body according to the present invention, FIG. 2 is a detailed diagram of each part of FIG. 1, and FIGS. 3 and 4 are diagrams of the present invention. FIG. 6 is an explanatory diagram of a movable member and a filament in another embodiment of the obstacle detection device for an opening/closing body. DESCRIPTION OF SYMBOLS 1... Lower end panel, 2... Seat plate holding material, 3... Movable seat plate, 4... Drive bin, 5... Drive lever, 6...
...Movable member, 7...Wire, 8...Turnbuckle, 9...Detection lever, 10...Spring, 1
1...Micro switch, 12...Stopper, 1
3... Bracket, 14... Case, 15... Obstacle. Patent applicant: Toyo Shutter Co., Ltd.

Claims (1)

[Claims] A linear body disposed along a movement path of an opening/closing body that opens and closes vertically, a movable member inserted into the filamentous body and attached near the bottom of the opening/closing body, and a movable member provided at the bottom of the opening/closing body. a contact sensing member; a driving member that changes the state of insertion of the movable member into the filamentous body based on displacement of the contact sensing member; and a switching means that detects displacement applied to the filamentous body. An obstacle detection device for an opening/closing body characterized by: