JPH0453228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for controlling winding and extension of an awning.

[Conventional technology]

Conventionally, a tent is wound around a winding shaft that is rotated in forward and reverse directions by a motor, and the leading edge of the tent is connected to a front frame, and the front frame is connected to a bending arm biased by a spring in the direction of extension. 2. Description of the Related Art There are known awnings in which a tent is wound up by a winding shaft by rotating a motor in forward and reverse directions, and the tent is rolled up or stretched out by being unrolled.

For example, the following control device is known as a device for controlling winding and extension of such an awning. In other words, a counter that counts the rotation of the winding shaft, a limit switch connected between the motor and the power source, a rotation setting device that sets the number of revolutions of the winding shaft when the tent is completely wound or extended, and this rotation setting. It is equipped with a controller that turns off the limit switch when the set number of rotations of the device and the number of rotations counted by the counter match, and turns on the take-up switch or overhang switch to turn the motor in forward and reverse directions to wind up the tent with the take-up shaft. At the same time as the tent is extended, the number of rotations of the winding shaft is counted by a counter, and when the counted number of revolutions matches the set number of revolutions, the limit switch is turned OFF and the motor is stopped. Control device that automatically stops.

[Problem that the invention seeks to solve]

As a counter in such a control device, a mechanical counter or an electric counter can be used, but when a mechanical counter is used, it is necessary to mechanically connect it to the motor or the winding shaft, and the installation work is difficult. In addition to being troublesome, the structure of the counter itself is complicated and expensive, and there are problems with durability.In the case of electric counters, the counter value is lost in the event of a power outage, so it is necessary to back up the power outage with batteries, etc. Therefore, the circuit becomes complicated and expensive.

In addition, in both mechanical and electric counters, it is necessary to start counting from the winding completion position, but since the winding completion position is not known in advance before assembly, it is necessary to actually roll up the tent after assembly. It is necessary to stick out the counter and store the count value, which is cumbersome to operate.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an awning winding and extending control device that can solve the above-mentioned problems.

[Means and actions for solving problems]

The tent 4 is rotated forward and backward using the motor 3 to rotate the take-up shaft 2.
The awning for winding up and extending the tent 4 includes means for detecting the completion of winding the tent 4, a pulse generator 10 that outputs pulses according to the rotation of the winding shaft 2, and a pulse generator 10 that counts the pulses of the pulse generator 10. a counter 12 for setting the winding shaft 2, a setting device 14 for setting a value corresponding to the number of rotations of the winding shaft 2 from the completion of winding to the completion of stretching, and a detection means that detects and operates the winding shaft 2 in the winding direction when the power is turned on. means for driving and controlling the winding shaft 2 until the set value of the setting device 14 and the count of the counter 12 match based on the tent extension command;
This control device includes means for winding up the winding shaft 2 until the detection means detects the tent winding command based on the tent winding command, so that when the awning is assembled, it is always at the winding completion position. Since the unwinding rotational position of the winding shaft 2 can always be kept constant, a value corresponding to the rotational speed of the winding shaft 2 that extends the tent 4 from the winding completion position to the tensioning completion position determined by the awning is set. All you have to do is set it on setting device 14, and before assembly, set it on setting device 1.
4, and there is no need to wind up the tent 4 once and unroll it to set the set value as in the past, so the setting operation can be easily performed, and there is no need to store it electrically. Since there is no need to back up the winding with a battery or the like so that it does not disappear during a power outage, the circuit becomes simple and inexpensive.Moreover, the number of rotations of the winding shaft 2 is calculated by counting the pulses of the pulse generator 10 with the counter 12. As a result, the structure is simpler and cheaper than when using a mechanical counter, the durability is excellent, and the installation work is also easy.

〔Example〕

FIG. 2 is a schematic perspective view of the awning. A winding shaft 2 supported on a mounting bracket 1 is rotated forward and backward by a motor 3, and the base end of a tent 4 is wound around it, and the tip of the tent 4 is bent and stretched. The bending/extending arm 5 is attached to a front frame 6 connected to the arm 5, and is biased to extend by a spring (not shown).
When the tent 4 is completely rolled up, the bending/extension arm 5 is installed so that it is turned ON, and a reverse winding detection limit switch 8 is disposed below the winding shaft 2 as shown in FIGS. 4a and 4b. When the tent 4 is rolled backwards as shown in b, the tent 4 loosens and contacts the reverse winding detection limit switch 8, turning it on.

FIG. 1 is a control circuit diagram, in which 10 is a pulse generator, 11 is a waveform shaping circuit, 12 is a counter, and 13 is a control circuit diagram.
is a comparator, 14 is a setting device, 15 is a mutual reset flip-flop, 16 is a push button switch for overhanging,
17 is a push button switch for winding, 18 is a relay for forward rotation of the motor, and 19 is a relay for reverse rotation of the motor. It generates pulses proportional to the rotation of the take-up shaft 2. For example, 200 pulses are generated during one rotation of the take-up shaft 2. These rotary encoders and rotary pulse generators are composed of a light emitting diode and a photodiode. An inexpensive non-contact incremental type such as an optical type combining a slit disk, a Hall element type using a combination of a disk with a permanent magnet and a Hall element, or an alternator type may be used.

The waveform shaping circuit 11 shapes the pulses from the pulse generator 10 into a waveform that is easy to count.
When a clear signal is input to the terminal 12b, the counted value is set to zero, and when a count prohibition signal is input to the terminal 12b, the counting is stopped.

The setting device 14 is for setting a numerical value corresponding to the number of revolutions of the winding shaft 2 corresponding to the maximum amount of extension of the tent 4, and there is a digital setting method that directly sets the numerical value using a digital switch, and a method using an A/D converter. There is an indirect setting method.

This indirect setting method using an A/D converter means that the power supply
Vcc is divided by a variable resistor to obtain the voltage Vin, this voltage Vin is A/D converted to obtain a digital output corresponding to the voltage Vin, and this digital output is used as the set value, which is set by the variable resistor. can be done easily.
In this case, it is easy to use a trimmer type variable resistor of a multi-rotation type (for example, one that rotates once with 20 rotations of the knob).

The mutual reset flip-flop 15 is a terminal
When a set signal is input to CL ₁ and CL ₂ , terminals Q ₁ and
When a signal is output from Q ₂ and a reset signal is input to terminals R ₁ and R ₂ , signal output from terminals Q ₁ and Q ₂ is stopped.

Also, when outputting a signal from terminal Q ₂ , terminal CL ₁
When a set signal is input to the terminal Q2, the signal output from the terminal _Q2 is stopped, and a signal is output from the terminal _Q1 . Conversely, if a set signal is input to terminal _CL2 while a signal is being output from terminal _Q1 , the signal output from terminal _Q1 is stopped and the signal is output from terminal _Q2 .

Next, the details of each part will be explained along with the operation.

When the power supply Vcc is turned on, the first inverter 20 outputs an H signal for a time determined by the resistor R and capacitor C, and the H signal is sent to the first and second OR gates 21,
22 sent mutual reset flip-flops 1
₅ , the signal is output from terminal Q ₂ without being output from terminal Q ₁ , and the forward rotation relay 18 is turned OFF by _the second and third inverters 23 and 24. Then, the reversing relay 19
Since it is turned ON, the motor 3 rotates in reverse, and the winding shaft 2 winds up the tent 4. At the same time, a count prohibition signal is input to the terminal 12b of the counter 12 to prohibit counting.

When the tent 4 is completely rolled up, the winding limit switch 7 is turned on by the bending arm 5.

As a result, the output of the fourth inverter 25 becomes an H signal, a clear signal is input to the terminal 12a of the counter 12, and the counter 12 is cleared.At the same time, the terminal of the mutual reset flip-flop 15 is cleared.
When a signal is input to _R2 and no signal is output from terminal _Q2 , the reversing relay 19 is turned off and the motor 3 is stopped, so that the winding operation is stopped. At the same time, the count prohibition signal is no longer output to the terminal 12b of the counter 12, so that the count prohibition of the counter 12 is canceled.

Through the above operations, the tent 4 is completely wound up, and the counter 12 is cleared and becomes ready for counting.

In the above-mentioned state, press the push button switch 16 for overhang.
When turned on, the output of the fifth inverter 26 becomes an H signal, and the terminal of the mutual reset flip-flop 15
Since a signal is input to CL ₁ and a signal is output from terminal Q ₁ , the forward rotation relay 18 is turned on and the motor 3 rotates in the forward direction.

As a result, the take-up shaft 2 rotates in the normal direction, and the tent 4 is let out by the extension force of the bending/extending arm 5, and the extending operation is started.

At the same time, the pulse generator 10 outputs pulses as the winding shaft 2 rotates, and the pulses are sequentially counted by the counter 12.

The values sequentially counted by the counter 12 are successively compared by the comparator 13 with the set value previously set by the setter 14, and when the two match or exceed the set value, the comparator 13 sends a signal to the first OR gate 21. is output and a signal is input to the terminal _R1 of the mutual reset flip-flop 15, the signal from the terminal _Q1 is stopped, the forward rotation relay 18 is turned off, the motor 3 is stopped, and the tent 4 is extended. It stops and reaches the maximum extended position, completing the extension.

Next, when the winding push button switch 17 is turned on, the sixth
The output of the inverter 27 becomes an H signal, a signal is sent to the second OR gate 22, the signal is input to the terminal CL ₂ of the mutual reset flip-flop 15, and the signal is output from the terminal Q ₂ , which causes the reverse relay to be activated. 19 turns ON and motor 3 reverses, the winding shaft 2
is reversed and the tent 4 is rolled up. At the same time, a count prohibition signal is input to the terminal 12b of the counter 12, and counting is prohibited.

When winding is completed, the winding limit switch 7 is turned on as described above, the motor 3 is stopped as described above, and the count 12 is cleared.

In addition, if the setting value set in the setting device 14 is larger than the value corresponding to the number of rotations of the take-up shaft 2 when the tent 4 is fully extended, the take-up shaft further rotates in the normal direction to unwind the tent 4, causing the tent 4 to sag as shown in FIG. However, at this time, the reverse winding detection limit switch 8 is turned on at the tent 4 as shown in FIG. 4b.

As a result, the output of the seventh inverter 28 becomes an H signal, which outputs a signal to the first OR gate 21 and turns off the forward rotation relay 18 as described above.
Since the motor 3 is stopped and the winding shaft 2 no longer unwinds the tent 4, reverse winding of the tent 4 can be prevented.

〔Effect of the invention〕

In addition to providing means for detecting the completion of winding up the tent 4, we also provided means for winding up the winding shaft 2 until the detection means detects when the power is turned on, so that when the awning is assembled, the winding is always performed. Since this is the complete position, the unwinding rotational position of the winding shaft 2 can always be kept constant.

Therefore, it is only necessary to set a value in the setting device 14 that corresponds to the rotational speed of the winding shaft 2 that extends the tent 4 from the winding completion position to the extension completion position determined by the awning, and the setting can be done before assembly. Setting values can be set in the container 14, and there is no need to wind up the tent 4 once and unroll it to set the setting value as in the past, so the setting operation can be easily performed and it can be stored electrically. There is no need to back up the power with a battery or the like so that it does not go out in the event of a power outage, making the circuit simpler and cheaper.

In addition, the number of revolutions of the winding shaft 2 is calculated by counting the pulses from the pulse generator 10 with the counter 12, which makes the structure simpler and cheaper than using a mechanical counter. , it has excellent durability and is easy to install.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a control circuit diagram, Fig. 2 is a schematic perspective view of the awning, Fig. 3 is an explanatory diagram of the operation of the winding limit switch, and Fig. 4 a and b are reverse winding. FIG. 3 is an explanatory diagram of a detection limit switch. 2 is a winding shaft, 3 is a motor, 4 is a tent, 5 is a bending arm, 6 is a front frame, 10 is a pulse generator, 12
is a counter, and 14 is a setting device.

Claims (1)

[Claims] 1 Wrap the tent 4 around the winding shaft 2 which is rotated forward and backward by the motor 3, attach the tent 4 to the front frame 6 connected to the bending arm 5 which is biased to extend, and
Rotate the winding shaft 2 forward and backward to wind up the tent 4,
In the overhanging awning, the tent 4
means for detecting the completion of winding; a pulse generator 10 that outputs pulses according to the rotation of the winding shaft 2;
A counter 12 that counts the pulses of the pulse generator 10, a setting device 14 that sets a value corresponding to the number of rotations of the winding shaft 2 from the completion of winding to the completion of overhanging, and a setting device 14 that winds the winding shaft 2 when the power is turned on. in the direction of
means for controlling the drive until the detection means detects the tent; means for operating the winding shaft 2 to extend the winding shaft 2 until the set value of the setting device 14 and the count of the counter 12 match based on the tent extending command; An awning winding and extending control device comprising means for winding up the winding shaft 2 until the detection means performs a detection operation based on the following.