JPH0732874Y2 - Shutter safety device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention prevents an accident due to a person or an obstacle being caught or damage to the shutter curtain when the shutter curtain of the electric shutter for opening and closing the opening is lowered. The present invention relates to a shutter safety device.

[Prior Art] Conventionally, when a shutter curtain of an electric shutter that opens and closes an opening is lowered, an accident caused by a person or an obstacle being caught,
In order to prevent damage to the shutter curtain, an obstacle detection switch is provided on the seat plate frame of the shutter curtain, and when an obstacle is detected by the obstacle detection switch, an obstacle detection signal is sent to a hollow portion on one side of the seat plate. From the transmitter installed in
It is known that the shutter opening / closing drive is sent to a control mechanism for controlling the ascending / descending operation to stop the shutter descending.

However, since this one uses a battery as a power source for operating the transmitter, the power consumption of the battery causes
Even if the obstacle detection switch detects an obstacle, the obstacle detection signal is not sent to the control mechanism and falls into an uncontrolled state, which may cause damage to the shutter curtain, obstacles, etc. or personal injury. Not only does it have a very serious drawback for safety, but it also requires the battery replacement work while maintaining an unstable control state due to the shutter curtain moving up and down due to battery power consumption. There is a danger that the lifting operation may be induced, and safe battery replacement work cannot be performed.

[Problems to be Solved by the Present Invention] In view of the above-mentioned circumstances, the present invention was devised to eliminate the conventional drawbacks, and the purpose thereof is to transmit an obstacle detection signal. The mechanism is provided with a voltage monitoring and transmitting section for monitoring the voltage drop of the battery, and the detection operation of the voltage monitoring and transmitting section immediately stops the raising and lowering of the shutter curtain regardless of whether or not an obstacle is detected when the shutter curtain descends. Disable the shutter up / down control operation with the hand switch, etc., and notify the operator of battery exhaustion by blinking the alarm lamp or buzzer to prevent accidents such as obstacles and shutter curtain damage, personal injury, etc. Not only can you
When replacing the battery, open the lid that holds the battery of the shutter curtain that has stopped due to exhaustion of the battery to release the battery voltage drop detection state, and then restart the shutter curtain that was stopped by operating the hand switch etc. An object of the present invention is to provide a safety device for a shutter that can be lowered to perform safe battery replacement work.

[Means for Solving the Problems] In order to solve the problems, the technical means adopted by the present invention are:
In order to interlock with a control mechanism that controls the up-and-down operation of the shutter opening / closing driver, an obstacle detection switch mechanism is provided on the seat plate of the shutter curtain, and a shutter is provided with a battery that supplies power to the obstacle detection switch mechanism. In the safety device, the seat plate is provided with a transmission mechanism that emits an obstacle detection signal in conjunction with the obstacle detection of the obstacle detection switch mechanism, and the transmission mechanism has a voltage for detecting the voltage drop of the battery. A voltage monitoring release switch provided with a monitoring transmitter and interlocking with the opening / closing operation of the lid that houses the battery is attached, and the lowering operation of the shutter curtain is stopped by detecting the voltage drop of the battery. It is characterized in that the shutter curtain can be raised and lowered again by an opening operation.

[Advantage of the Invention] Therefore, according to the present invention, it is possible to prevent the shutter curtain uncontrolled state due to the voltage drop of the battery to improve the safety of the shutter and supply the power to the obstacle detection switch mechanism. The battery can be replaced easily, safely and securely, and the maintenance work of the shutter can be performed smoothly.

[Embodiment] The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings.

In FIG. 1, reference numeral 1 is a shutter curtain provided in a building opening, and the shutter curtain 1 is opened and closed by being guided by guide rails 2, 2 arranged on the left and right.
Reference numeral 3 denotes an opening / closing drive device for the shutter curtain 1, and the control mechanism 3b is configured so that the shutter curtain 1 is rolled up in the shutter case 3a and rewound by the forward / reverse rotation drive of the opening / closing drive device 3. It is configured.

A seat plate 4 is formed at the lower end of the shutter curtain 1. As shown in FIGS. 2 (a) to 2 (c), the lower surface opening 4a of the seat plate 4 has a lower end of the seat plate 4. An obstruction detection switch mechanism 5 is configured by fitting a tape-shaped seat plate switch 5c in which strip-shaped contacts 5a and 5b are vertically separated and opposed to each other over the entire area and are fitted to the locking protrusions 4b. . Further, between the reinforcing ribs 4c, 4c formed on the inner surface of the seat plate 4,
A hollow portion 4d is formed, a transmitter 6 is disposed on one side of the hollow portion 4d, and a battery 6a is provided at a position near the transmitter 6 such that the battery 6a can be opened and closed freely. Hollow part through body 6b
A voltage monitoring release switch 6d housed in the lid 4d and closed when the lid 6b is open is provided so as to face the opening 6c of the lid 6b. On the other hand, on the outer side surface of the seat plate 4, a transmission LED 7 is arranged vertically upward, and the transmission LED 7 is provided with strip-shaped contacts of the obstacle detection switch mechanism 5 arranged on the seat plate 4. The contact output lines 8a of 5a and 5b and the control line 8b of the transmitter 6 are connected to each other, and when the shutter curtain 1 descends, when the obstacle comes into contact with the seat plate switch 5c, the strip contacts 5a and 5b are closed. Then, an obstacle detection signal 9a having a constant transmission frequency f ₁ is emitted from the transmitter 6 to the transmitting LED 7 and the transmitting LED 7
The transmitting mechanism 9 is configured to send the obstacle detection signal 9a sent from the control input unit 15 of the control mechanism 3b arranged at the upper end of the guide rail 2 described later.

As shown in FIG. 3, the transmission mechanism 9 includes an obstacle detection / holding circuit 10, an input / output control circuit 11 and an alarm drive circuit 12, and a voltage monitoring / transmitting section 13 including a comparison circuit 13a and an alarm holding circuit 13b. The built-in obstacle detection holding circuit 10 receives the obstacle detection signal 9a output from the obstacle detection switch mechanism 5 at the input terminal CK ₁ and then sets the obstacle detection signal 9a to the H level state. Convert and hold output pin Q ₁
From the output LED 7 to the obstacle detection signal 9a, and the detection release signal from the input / output control circuit 11 switches the H level holding state to the L level reset terminal R ₁ Is provided and is configured to always maintain the L level state in the normal shutter raising / lowering operation control. In addition, the voltage monitoring transmitter 13
When the power supply voltage of the battery 6a drops at least within the range in which the transmission mechanism 9 can be driven, the comparison circuit 13a compares the power supply voltage V ₁ of the battery 6a with the reference voltage V ₀ to obtain V ₁ <V _0. When the alarm signal a is output, the alarm signal a output from the comparison circuit 13a is received at the input terminal CK ₂ of the alarm holding circuit 13b, the alarm signal a is converted to the H level state, held and output. The signal is sent from the terminal Q ₂ to the input / output control circuit 11, and the alarm signal a
Is converted into a voltage monitoring signal 9b having a constant transmission frequency f ₂ and is output from the transmission LED 7. Further, the voltage monitoring cancel switch 6d is connected to the reset terminal R ₂ of the alarm holding circuit 13b, and is provided for the purpose of resetting the circuit operation of the alarm holding circuit 13b by opening / closing the lid 6b. An alarm drive circuit 12 is connected to the input / output control circuit 11, and the alarm drive circuit 12 uses the voltage monitoring signal 9b from the input / output control circuit 11 to indicate the power consumption state of the battery 6a and an alarm lamp 14 It is provided for the purpose of informing the surroundings by blinking.

The control mechanism 3b includes a control input unit 15 and an obstacle detection receiving unit 1
6, which is composed of a voltage monitoring reception unit 17 and a controller 18, and sends an obstacle detection signal 9a received by the control input unit 15 to the controller 18 via the obstacle detection reception unit 16 in a normal obstacle detection state. Then, the shutter drive stop signal sent from the controller 18 drives the opening / closing driver 3.
It controls stop and switching between forward and reverse rotation. In addition, the voltage monitoring receiving unit 17 receives the voltage monitoring signal 9b from the voltage monitoring transmitting unit 13.
Is sent to the opening / closing drive machine 3 via the controller 18, and the rotational drive of the opening / closing drive machine 3 is immediately stopped regardless of the presence or absence of an obstacle.

In the above configuration, when the seat curtain 4 of the shutter curtain 1 comes into contact with an obstacle in the shutter opening / closing area during the lowering operation of the shutter curtain 1, the seat board fitted to the lower end of the seat curtain 4 is installed. When the belt-shaped contacts 5a, 5b of the switch 5 are closed, an obstacle detection signal 9a is emitted from the transmitter 6 to the transmission LED 7, and the control mechanism 3b arranged at the upper end of the guide rail 2 is provided.
Is sent to the control input unit 15. Next, the control input section
At 15, frequency discrimination is performed and a constant transmission frequency f ₁
After the obstacle detection signal 9a having the above is sent to the obstacle detection receiving unit 16, a drive stop signal is sent from the controller 18 to the opening / closing driver 3, and the lowering operation of the shutter curtain 1 is stopped.

In such a shutter control operation, when the battery 6a is used up for a long period of time and the power supply voltage of the battery 6a drops at least within a range where the voltage monitoring transmitter 13 can be driven, the voltage monitoring transmitter In the comparison circuit 13a of 13, the battery 6
The power supply voltage V _{1 of a} and the reference voltage V ₀ are compared, and V ₁ <V ₀ , and the alarm signal a is issued from the comparison circuit 13a. Then, the alarm latch circuit 13b, converts holding the alarm signal a to the H-level state, and transmitted from the output terminal Q ₂ to output control circuit 11, a constant transmission frequency with said input output control circuit 11
After being converted into the voltage monitoring signal 9b having f ₂ , the voltage monitoring signal 9b propagates from the transmitting LED 7 in the guide rails 2, 2 and is received by the control input unit 15 of the control mechanism 3b. Then, in the control input unit 15, the voltage monitoring signal 9b is discriminated at the frequency f ₂ and then sent to the voltage monitoring receiving unit 17, and the shutter stop signal is sent from the voltage monitoring receiving unit 17 to the controller 18.
Is sent to the opening / closing drive machine 3 via the
The lifting operation of the shutter curtain 1 is immediately stopped regardless of the existence of obstacles. At the same time, the voltage monitoring signal 9b is sent from the input / output control circuit 11 to the alarm drive circuit 12, the alarm drive signal is issued from the alarm drive circuit 12, and the alarm lamp 14
Blinks to inform the surroundings of the power supply voltage consumption of the battery 6a.

Then, as described above, when the lid 6b for accommodating the battery 6a is opened in order to replace the battery 6a arranged on the seat plate 4 of the shutter curtain 1 stopped in the middle of the lifting operation, the voltage monitoring release switch is released. 6d is closed and alarm holding circuit 13
alarm latch circuit 13b b of the reset terminal R ₂ is at the L level
The output of the alarm signal a is released and the transmission of the voltage monitoring signal 9b from the transmission LED 7 is stopped, and the control mechanism 3b
Is the shutter curtain 1 due to the low power supply voltage of the battery 6a
Cancel the stop control of. After that, the shutter curtain 1 is lowered to a predetermined stop position by operating a hand switch or the like, and the battery 6a is replaced with a non-defective product.
Since the output of the alarm signal a of a is canceled and the transmission of the voltage monitoring signal 9b from the voltage monitoring transmission unit 13 is stopped,
The shutter stop signal from the voltage monitoring reception unit 17 of the control mechanism 3b is also released, and the lifting / lowering operation of the shutter curtain 1 by the opening / closing driver 3 is resumed, and the control mechanism 3b returns to the steady control state and the alarm lamp 14 The blinking of will also be canceled.

In the present embodiment, the configuration according to the control system diagram shown in FIG. 3 is used, but the configuration is not limited to this. The point is that the voltage of the voltage monitoring / transmitting unit is released when the lid that houses the battery is opened. It suffices if the configuration is such that the lowering detection state is released and the stopped shutter curtain is again moved up and down.

[Effects of the Invention] In summary, the present invention, in order to interlock with the control mechanism for controlling the up-and-down operation of the shutter opening and closing drive, the shutter curtain seat plate obstacle detection switch mechanism and the obstacle detection switch. In a shutter safety device provided with a battery for supplying power to the mechanism, the seat plate is provided with a transmission mechanism for transmitting an obstacle detection signal in synchronization with the obstacle detection of the obstacle detection switch mechanism, and the transmission The mechanism is equipped with a voltage monitoring transmitter to detect the voltage drop of the battery, and a voltage monitor release switch that is linked to the opening / closing operation of the lid that houses the battery is attached, and the shutter curtain detects the battery voltage drop. After stopping the lowering operation of the shutter curtain, the shutter curtain can be raised and lowered again by the opening operation of the lid body. Although it can reliably detect the obstacles, it moves up and down the shutter curtain without inducing malfunctions such as undetected obstacles by checking the exhaustion of the battery that drives the obstacle detection switch mechanism. The operation can be stopped immediately, and the shutter curtain stopped due to the voltage drop of the battery opens the storage lid that stores the battery to temporarily cancel the monitoring state of the power supply voltage consumption and to replace the battery. The shutter curtain can be lowered to an appropriate position, and the inspection and maintenance work of the shutter can be performed safely and smoothly, which is a very useful practical effect.

[Brief description of drawings]

FIG. 1 shows an embodiment of a safety device for a shutter according to the present invention. FIG. 1 is an overall front view, FIG. 2 (a) is a partial cutaway front view, and FIG. 2 (b). ) Is a right side view of the same as above, FIG. 2 (c) is an enlarged view of a main part, and FIG. 3 is a control system diagram. In the figure, 1 ... Shutter curtain, 3 ... Open / close drive, 3b ...
Control mechanism, 4 ... Seat plate, 5 ... Obstacle detection switch mechanism, 6a ... Battery, 6b ... Lid, 6d ... Voltage monitoring release switch, 9 ... Transmitting mechanism, 13 ... Voltage monitoring transmitting unit ,.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiko Nishiwaki 2-1-1, Nishishinjuku, Shinjuku-ku, Tokyo Sanwa Shutter Industry Co., Ltd. (56) Reference JP-A-64-33390 (JP, A) Open Sho 62-288288 (JP, A) Actual Open Sho 61-53496 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An obstacle detection switch mechanism on a seat plate of a shutter curtain and a battery for supplying power to the obstacle detection switch mechanism so as to be interlocked with a control mechanism for controlling the lifting operation of a shutter opening / closing drive. In the shutter safety device provided, the seat plate is provided with a transmission mechanism that emits an obstacle detection signal in conjunction with the obstacle detection of the obstacle detection switch mechanism, and the transmission mechanism has a low battery voltage. After installing a voltage monitoring transmitter to detect the voltage, and attaching a voltage monitoring release switch that interlocks with the opening and closing operation of the lid that houses the battery, and after stopping the lowering operation of the shutter curtain by detecting the voltage drop of the battery, A shutter safety device, wherein the shutter curtain can be raised and lowered again by opening the lid.