JP2908956B2 - Electric switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor-operated opening / closing device for opening / closing an object to be operated such as a blind, a roll screen, a shutter or the like by a motor or the like.

[0002]

2. Description of the Related Art A conventional electric switchgear of this kind, for example,
By centrally controlling a plurality of electric blinds with a single controller, the height of the plurality of blinds and the angle of the blades are set to appropriate values in terms of both lighting and cooling / heating efficiency. Electric blind systems are commercially available that help save and maintain the overall appearance of the building.

[0003] An example of such an electric blind system is disclosed in Japanese Patent Application Laid-Open No. 1-192986.

Next, the electric blind disclosed in the above publication will be described.

In this electric blind, a plurality of blinds are provided in each of a plurality of zones. Then, one of the blinds in each zone is determined as the parent device, and the rest is determined as the child device. In each zone, the blind of the master unit is connected to the blind of one slave unit via a signal line, and the blind of this slave unit is connected to the blind of the next slave unit via another signal line. In this way, the blinds of the parent device and the blinds of the child device are connected in series. The blinds of each master unit in each zone are connected to a centralized controller that can control each blind individually or collectively.

In the electric blind constructed as described above, when the elevation of the blinds of the master unit and the slave unit and the opening / closing of the blades are commanded collectively or individually from the centralized controller for the zone or all the zones. First, the master unit receives the command signal. If the command signal is for collectively or individually instructing vertical movement and opening and closing in the zone to which the parent machine belongs, the parent machine raises and lowers the blinds of the parent machine and opens and closes the blades.

If the command signal is a command for collectively or individually raising and lowering and opening and closing the slaves in the zone to which the master belongs, the master outputs the command signal to the slaves. Each of the slave units raises and lowers the blinds of the slave unit and opens and closes the wings in response to a command for raising and lowering and opening and closing the blind to the slave unit.

When a signal for instructing the vertical movement of the blinds and the opening and closing of the blades is issued from the centralized controller for all the zones, each zone performs the collective operation, that is, the interlocking operation.

The above-mentioned interlocking operation is controlled so as to move up and down and open and close at a predetermined constant speed. As a result, all the linked blinds are set to the same height and angle.

[0010] If the above-mentioned electric blind control method is applied to a blind pointing in the same direction with respect to the sun, by operating all the blinds in an appropriate state by the interlocking operation as described above, it is possible to reduce the cost of cooling and heating and to reduce the cost of the building. The overall beauty can be maintained.

[0011]

With the electric blind constructed as described above, since a plurality of blinds are operated at the same time, the operation sound at the time of the interlocking operation is large.
Also, when the sun is automatically controlled to point in the same direction, it starts suddenly, so the operation sound is more worrisome, and the office where the blinds are installed has been improved to a quiet environment. Therefore, efforts have been made to quiet the drive motor itself in order to reduce the operating noise of the electric blind.

However, to reduce the noise of the driving motor itself is a method of using the driving motor with a margin, or to use a sound absorbing material, so that the driving motor becomes expensive, and thus the blind is blinded. There is a problem that it becomes expensive.

Therefore, an object of the present invention is to reduce the rotational speed of the motor, that is, reduce the motor output, without using an expensive drive noise reduction motor. It is an object of the present invention to provide an electric opening / closing device that realizes that the operation sound can be slightly disturbed by changing the ascending / descending speed according to the blind operating condition or changing the ascending / descending speed according to the operating condition. .

[0014]

According to a first aspect of the present invention, there is provided an apparatus for operating a blind "up,""down," or "stop," which is an object to be operated. Switch means, control means such as a motor for raising or lowering the blind, and receiving an input signal from the operation switch means, and further performing a constant speed operation while the blind is moving up and down based on the received signal. A microcomputer which is a control means for outputting a control signal to the control means in order to perform the constant speed operation at a time of ascending at a later time than at a time of descending.

According to the second aspect of the present invention, the first aspect is provided.
An operation switch unit further including an operation switch for performing an operation of “speed switching”,
In the microcomputer, processing means for switching a constant speed value at the time of the elevating operation by an input signal from the "speed switching" operation switch is added.

According to a third aspect of the present invention, there is provided a second aspect in which the above means provided in the first aspect of the present invention performs "up,""down," and "stop" operations different from the operation switch means.
An operation switch means and a processing means for providing a difference in the constant speed value of the elevating operation by the input signal from the second operation switch means in the microcomputer are added.

According to a fourth aspect of the present invention, the microcomputer according to the first aspect of the present invention further comprises a microcomputer which receives an input signal from an “up” or “down” operation switch by using an operation switch continuous ON time. A processing means for increasing the constant speed value is added.

According to a fifth aspect of the present invention, there are provided the above-mentioned means provided in the first aspect of the present invention, wherein the speed setting switch means for setting a speed in the constant speed operation during the vertical movement of the blind, and the speed setting switch means in the microcomputer. The processing means for performing the constant speed operation using the input value of the above as a reference of the constant speed value is added.

[0019]

According to the present invention, if the output signal from the operation switch means is, for example, a "down" command signal, a "down" signal is input to a microcomputer, and the microcomputer is connected to the microcomputer. When the "down" signal is input, the motor control means outputs a signal for performing a constant speed lowering operation based on the lowering time constant speed value stored in the storage unit of the microcomputer. As a result, the blind lowers. Performs constant speed lowering operation based on the constant speed value during operation.

Next, if the output signal from the operation switch means is a "stop" command signal, a "stop" signal is input to the microcomputer, and the microcomputer outputs a signal for performing a constant speed lowering operation to the motor control means. Output is stopped, and as a result, the blind stops.

Next, if the output signal from the operation switch means is a "rise" command signal, a "rise" signal is input to the microcomputer, and the microcomputer is stored in the storage section of the microcomputer by the motor control means. The blind outputs a signal for performing a constant speed ascending operation according to the constant speed value during the ascending operation. As a result, the blind performs the constant speed ascending operation according to the constant speed value during the ascending operation.

Next, if the output signal from the operation switch means is a "stop" command signal, the blind stops in the same manner as in the case of the lowering. Since the constant speed value at the time of the rising operation is stored as a value smaller than the constant speed value at the time of the descending operation, the rising operation rises later than the descending operation.

According to a second aspect of the present invention, in addition to the operation of the first aspect, if the output signal from the operation switch means is a "speed switching" command signal, a "speed switching" signal is input to the microcomputer. When the microcomputer receives the "speed switching" signal, the microcomputer switches between the constant speed value during the descending operation and the constant speed value during the ascending operation stored in the storage unit.

According to a third aspect of the present invention, in addition to the operation of the first aspect, if the output signal from the second operation switch means is, for example, a "down" command signal, the microcomputer sends a "down" second signal to the microcomputer. When the signal is input and the microcomputer receives the "down" second signal, the motor control means performs a constant speed lowering operation based on the second lowering operation constant speed value stored in the storage unit of the microcomputer. For the blind, so that the blind is
A constant speed lowering operation based on a lowering speed constant speed value is performed.

Next, if the output signal from the second operation switch means is a "stop" command signal, a "stop" second signal is input to the microcomputer, and the microcomputer performs a signal for performing a constant speed lowering operation. Output to the motor control means is stopped, and as a result, the blind stops.

Next, if the output signal from the second operation switch means is a "rise" command signal, a "rise" second signal is input to the microcomputer, and the microcomputer controls the motor control means to store the data in the storage unit of the microcomputer. Outputs a signal for performing a constant speed increasing operation based on the constant speed value at the time of the second ascending operation stored in the memory, and outputs a signal for performing a constant speed increasing operation according to the constant speed value during the second ascending operation. As a result, the blind performs a constant speed rising operation based on the constant speed value during the rising operation. Next, if the output signal from the second operation switch means is a "stop" command signal, the blind is stopped in the same manner as in the case of the above-mentioned descent.

According to the fourth aspect of the present invention, there is provided the first aspect.
In addition to the operation of the invention, in the constant speed lowering operation by the "lower" command signal, if the "lower" command signal from the operation switch means is continuously input for a certain time, the microcomputer performs the lowering operation constant speed value. Is increased, and a control signal based on the speed value is output to the motor control means. As a result, the blind performs a descending operation at a high constant speed.

In the constant speed increasing operation by the "rising" command signal, the microcomputer increases the constant speed value during the rising operation if the "rising" command signal from the operation switch means is continuously input for a fixed time. Then, a control signal based on the speed value is output to the motor control means. As a result, the blind performs a rising operation at a high constant speed.

According to a fifth aspect of the present invention, in addition to the operation of the first aspect of the present invention, the microcomputer performs a constant speed lowering operation based on the constant speed value during the lowering operation or a constant speed increasing operation based on the constant speed value during the rising operation. When outputting a signal for performing the operation, a signal is output to the motor control means using the input signal value from the speed setting switch means as a reference of the constant speed value during the descending operation or the constant speed value during the ascending operation.

[0030]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electric blind according to an embodiment of the present invention;

FIG. 1 is a schematic block diagram showing the configuration of one embodiment of the present invention. The configuration of one embodiment of the present invention will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes an operation switch,
The operation switch 1 includes an "up" key 1a and a "down" key 1.
b, a "stop" key 1c and a "speed switching" key 1d. The "up" key 1a, the "down" key 1b, and the "stop" key 1c are operation keys for raising or lowering the blind, which is the operated body, and stopping the blind, and the "speed switching" key 1d is These are operation keys for switching the vertical speed between high speed and low speed.

Reference numeral 2 denotes a serial signal receiving circuit which receives a serial signal for instructing "up", "down" and "stop" which is a blind operation similar to the operation switch 1 from a central controller (not shown). Receive. Reference numeral 4 denotes a motor control circuit, which includes a height encoder (not shown) for outputting a pulse signal at a constant height in order to perform a constant speed raising / lowering operation, and drives a motor (not shown) based on an input signal. To raise or lower the blinds.

Reference numeral 5 denotes a microcomputer serving as control means, and its internal RAM memory (not shown) has a set ascending constant speed value 5a, a set ascending constant speed value 5b,
An operation constant speed value 5c and a continuous ON timer 5f are constructed, and the operation switch 1, the serial signal receiving circuit 2, and the motor control circuit 4 are connected.

The microcomputer 5 sets the constant speed value for operation 5a or 5a to the constant speed value for operation 5c based on a command signal from the operation switch 1 or the serial signal receiving circuit 2.
b is set, and the blind performs a constant speed raising operation or a constant speed lowering operation via the motor control circuit 4 and stops the blind during the raising / lowering operation. Also, "speed switching"
The set constant speed values 5a and 5b are switched from high speed to low speed or from low speed to high speed by an input signal of the key 1d. The continuous ON time of the "UP" key 1a or the "DOWN" key 1b is counted by the continuous ON timer 5f, and after one second, the operation constant speed value 5c is set to a higher value.

FIG. 2 shows the serial signal receiving circuit 2 shown in FIG.
3 is a diagram showing a waveform of a signal transmitted from a central controller (not shown).

In FIG. 2, the signal is composed of a serial signal composed of a binary code, and the serial signal includes operation contents defined by a fixed number of bits. In the signal shown in FIG. 2, “1” and “0” are represented by the magnitude of the signal period, 2 ms is used corresponding to “1”, and 4 ms is used corresponding to “0”. However, this is only an example. That is, the signal cycle is not limited to the above, and “1” or “0” may be represented by the magnitude of the amplitude regardless of the signal cycle, or another modulation method may be used.

FIGS. 3 and 4 are flow charts for explaining the operation of the blind shown in FIG. 1. FIG. 3 shows a case where the operation signal of the operation switch 1 is used, and FIG. 4 shows a case where the operation signal of the serial signal receiving circuit 2 is used. It is a flowchart in a case.

Next, a specific operation of the embodiment of the present invention will be described with reference to FIGS.

First, when no operation signal is input,
In step S1, it is determined that the operation switch 1 is OFF, and in step S2, the continuous ON timer 5f is cleared. Then, in step S21, it is determined that serial signal reception has not been received, and no reception processing is performed.

Next, the case where the "high-speed switching" key 1d is turned on will be described. At step S1, the operation switch 1 is
N, it is determined in step S3 that the key is the "high-speed switching" key 1d, and the constant-speed value switching processing in step S11 is performed. If the constant-speed values 5a and 5b for setting are "low-speed values", the speed is changed to "high-speed value". If it is "high speed value", it is switched to "low speed value".

Next, a case where the "down" key 1b is turned on will be described. Operation switch 1 is turned on in step S1
Are determined to be not the "speed switching" and "stop" keys in steps S3 and S4, and a continuous ON timer count-up process is performed in step S5.

Since the main routine including step S5 is configured to repeatedly execute the processing in a fixed time (for example, 10 ms), the count-up processing in step S5 is performed by a timer in units of a fixed time (for example, 10 ms). Becomes

As described above, since the continuous ON timer 5f has been cleared, it is determined in step S6 that the timer value has not yet passed one second. Next step S8
Is determined to be a "down" signal, and it is determined in step S10 that the vehicle is stopped, and a descent operation set including setting the descent time constant speed value 5b for setting to the operation constant speed value 5c in step S13 is performed. Done. By the lowering operation set in step S13, the constant speed lowering operation by referring to the operation constant speed value 5c, that is, the constant speed lowering operation by the value of the setting lowering constant speed value 5b is performed by outputting a control signal to the motor control circuit 4. Will be

Here, if the "down" key 1b is still ON, unlike the above-mentioned flow, it is determined in step S10 that the operation is in progress, and the lowering operation setting process in step S13 is not performed, and step S5 is performed. Only the continuous ON timer is counted up. When the subsequent ON time has elapsed for one second, it is determined that one second has elapsed in step S6, and the operation constant speed value 5 is determined in step S7.
c is increased by a certain amount. As a result, the operation constant speed value 5
The constant speed lowering operation with reference to c is a constant speed lowering operation at a higher speed.

Next, the case where the "stop" key 1c is turned on will be described. Operation switch 1 is turned on in step S1
Is not "speed switching" in step S3, and "stop" in step S4.
Is stopped, that is, the operation set is cleared. Thus, the above-described lowering operation is stopped.

Next, the case where the "up" key 1a is turned on will be described. Operation switch 1 is turned on in step S1
Are determined to be not the "speed switching" and "stop" keys in steps S3 and S4, and a continuous ON timer count-up process is performed in step S5. When the above-mentioned "stop" key 1c is turned off, there is no operation signal input, and since the continuous ON timer 5f has been cleared as described above, the timer value has still passed 1 second in step S6. It is determined that it has not been done.

In the next step S8, it is determined that the signal is the "rise" signal, and in step S9, it is determined that the motor is stopped. In step S12, the rising constant speed value 5a for setting is set to the constant speed value 5c for operation. Is performed. By the ascending operation set in step S12, the constant speed increasing operation with reference to the operation constant speed value 5c, that is, the constant speed increasing operation based on the value of the ascending operation constant speed value 5a is performed by outputting a control signal to the motor control circuit 4. .

It should be noted that, since the set ascending constant speed value 5a is programmed to be smaller than the set descending constant speed value 5b, that is, a slower value, the ascending operation is slower than the above-described descending operation.

Here, if the "up" key 1a is continuously turned on, unlike the above-described flow, it is determined in step S9 that the operation is in progress, and the up operation setting process in step S12 is not performed, and step S5 is performed. Only the continuous ON timer is counted up. When the subsequent ON time has elapsed for one second, it is determined that one second has elapsed in step S6, and the operation constant speed value 5c is determined in step S7.
Is increased by a certain amount. As a result, the operation constant speed value 5c
Is a constant speed increasing operation that is faster.

Next, the case where the "stop" key 1c is turned on will be described. As in the case of the above-described descending operation, the operation switch 1 is turned on in step S1, it is determined that "speed switching" is not performed in step S3, and "stop" is determined in step S4, and the stop of step S14 is performed. Processing, that is, clearing that the operation is set. As a result, the above-described ascent operation stops.

Next, the serial signal receiving circuit 2 "falls".
The case where a serial signal is received will be described. Step S21
And the serial signal is received.
Is determined to be stopped in step S24,
A descending operation setting including setting the descending low speed value to the operation constant speed value 5c in step S26 is performed. The constant speed value for operation 5
The constant speed lowering operation with reference to c, that is, the lowering lower speed value is performed by outputting a control signal to the motor control circuit 4.

As described above, the low speed value is set to the operation constant speed value 5c even if the setting lower speed constant speed value 5b has been switched to the high speed value by operating the "speed switching" key. Therefore, the lowering operation is performed not by the high speed value but by the low speed value.

Next, the serial signal receiving circuit 2 is "stopped".
The case where a serial signal is received will be described. Step S21
To receive a serial signal, and "stop" in step S22.
Is determined, and the stop processing of step S27, that is, the operation set is cleared. Thus, the above-described lowering operation is stopped.

Next, the serial signal receiving circuit 2 rises.
The case where a serial signal is received will be described. Step S21
And the serial signal is received.
Is determined to be stopped in step S23,
An ascending operation set including setting the ascending low speed value to the operation constant speed value 5c in step S25 is performed. The constant speed value for operation 5
The constant speed increasing operation is performed by outputting a control signal to the motor control circuit 4 while referring to c, that is, at the rising low speed value.

As described above, even when the setting speed constant speed value 5b has been switched to the high speed value by operating the "speed switching" key, the low speed value is set to the operation constant speed value 5c as described above. Therefore, the rising operation is performed not by the high speed value but by the low speed value. Further, as described above, the low speed value at the time of rising is programmed to be a value smaller than the low speed value at the time of falling, that is, a value lower than the low speed value at the time of falling.

Next, the serial signal receiving circuit 2 is stopped.
The case where a serial signal is received will be described. As in the case of the above-described descending operation, the serial signal is received in step S21, and "stop" is determined in step S22, and the stop processing of step S27, that is, the operation set is cleared. As a result, the above-described ascent operation stops.

FIG. 5 is a schematic block diagram showing the configuration of another embodiment of the present invention. Next, the configuration of another embodiment of the present invention will be described with reference to FIG.

In FIG. 5, reference numeral 11 denotes an operation switch. The operation switch 11 is an "up" key 1 similar to FIG.
a, a "down" key 1b, and a "stop" key 1c, and do not include the "speed switching" key 1d in FIG. It does not include the serial signal receiving circuit 2 in FIG.

Reference numeral 13 denotes a high-speed setting switch, which can set an ascending speed and a descending speed. Reference numeral 4 denotes a motor control circuit similar to that of FIG. Reference numeral 15 denotes a microcomputer whose internal RAM memory (not shown) has an ascending operation speed value 15d and a descending operation constant speed value 15e.
The operation switch 11, the speed setting switch 13, and the motor control circuit 4 are connected.

The microcomputer 15 reads the set value of the speed setting switch 13 and sets the set value to the constant speed value for rising operation 15d and the constant speed value for descending operation 15e.

Further, the blind is moved up or down at a constant speed via the motor control circuit 4 with reference to the speed value 15d for up operation or the constant speed value 15e for down operation based on a command signal from the operation switch 11. Is performed, and the blind during the elevating operation is stopped.

FIG. 6 is a flowchart for explaining the operation of another embodiment of the present invention. Next, a specific operation of another embodiment of the present invention will be described with reference to FIGS.

First, when no operation signal is input,
In step S31, it is determined that the operation switch 11 is OFF. In step S32, the speed setting switch reading process, that is, the setting value of the speed setting switch 13 is changed to the constant speed value 5d for the ascending operation and the constant speed value 5e for the descending operation. set.

Next, a case where the setting of the speed setting switch 13 is changed will be described. As described in the case where the operation signal is not input, the set value of the speed setting switch 13 is read in step S32 and set to the constant speed value 15d for ascending operation and the constant speed value 15e for descending operation. Have been. As a result, when the setting of the speed setting switch 13 is changed, the ascending constant speed value 15d and the descending operation constant speed value 15e are immediately updated.

Next, the case where the "down" key 1b is turned on will be described. Operation switch 1 is turned on in step S31
Is determined as a "fall" signal in step S32, and a fall operation set is performed in step S35. The lowering operation set in step S35 refers to the lowering operation constant speed value 5e, that is, the speed setting switch 1
The constant speed lowering operation is performed by outputting a control signal to the motor control circuit 4 according to the set value of 3.

Next, the case where the "stop" key 1c is turned on will be described. Operation step 1 is ON in step S31
Is determined as a "stop" signal in step S32, and the stop processing, that is, the operation set is cleared in step S36. As a result, the aforementioned descending operation stops.

Next, the case where the "up" key 1a is turned on will be described. Operation switch 1 is turned on in step S31
Is determined to be a "rise" signal in step S32, and a rise operation set is performed in step S34. By the ascent operation set in step S34, the operation setting switch 1 is referred to while referring to the ascending operation constant speed value 5d.
The constant speed increasing operation based on the set value of 3 is performed by outputting a control signal to the motor control circuit 4.

Next, the case where the "stop" key 1c is turned on will be described. As in the case of the lowering operation described above, the operation switch 11 is turned on in step S31, and
In step 3, it is determined to be "stop", and the stop processing in step S36, that is, clearing that the operation is set is cleared. As a result, the above-described ascent operation is stopped.

In the setting of the speed setting switch 13, if the ascending speed value is set to a value smaller than the descending speed value, that is, a lower value, the constant speed ascending / descending operation based on the set value is performed as described above. As a result, the rising speed is a constant speed rising operation at a lower speed than the falling time. Also, if the set value is increased, a fast lifting operation is obtained, and if the set value is reduced, a slow lifting operation is obtained.

FIG. 7 is a flowchart of the constant speed raising / lowering control in the two embodiments. Next, the constant speed raising / lowering control will be described with reference to FIG.

During the raising and lowering operations, a pulse signal is input to each of the microcomputers 5 and 15 from the height encoder included in the motor control circuit 4. Each of the microcomputers 5 and 15 is set so as to be interrupted every time a pulse of the signal is input. In each microcomputer, a period timer (not shown) is set to count the period of the signal.

When each of the microcomputers 5 and 15 receives a pulse signal from the height encoder during the elevating operation, it determines in step S41 that the microcomputer is operating, and then proceeds to step S41.
At 42, the cycle timer value is checked, and the voltage applied to the motor is changed according to the difference from the timer value determined from the constant speed rise / fall value.

That is, if the value is judged to be appropriate, the applied voltage is kept as it is. If the value is large, that is, the cycle is long, the motor applied voltage is increased by a certain amount in step S34. In S44, the motor applied voltage is reduced by a fixed amount. Then, in step S45, the cycle timer is cleared so as to count the cycle until the next pulse input. As a result, the motor is driven in a direction in which the cycle approaches a constant value.

In the above embodiment, the discrimination time of the continuous ON timer is set to one second, but this is an example. In addition, switching is performed by continuous ON time.
One way is to switch by pressing twice. In addition, two-stage switching from a set value to a fixed amount of high-speed value is performed. However, a method of three or more stages, that is, a method in which the speed is continuously increased while being continuously turned on, or as a plurality of pressings are performed, is also conceivable. In the above-described embodiment, the switching value by the "speed switching" key 1d is set to two stages of a low speed value and a high speed value, but it is also possible to perform switching of three or more stages. Alternatively, the blind may have a clock function, or a serial signal may be transmitted from the central controller according to the time, that is, the speed may be switched according to the time.

Although a dip switch is generally assumed as the speed setting switch 13, an EEPROM capable of easily changing data and retaining data even when the power is turned off is used. It is also possible to set the speed value based on the size and the like before shipping.

Further, in the above embodiment, the opening / closing operation is not described, but it is easy to apply the present invention to the opening / closing operation.

[0078]

As described above, according to the present invention, at the same rotational speed, the ascending / descending speed at the time of ascending or descending, which is a driving means, for example, when the motor load increases and the motor operation noise becomes larger than at the time of descending, is slowed down or slowed down. Since it can be set, it is possible to relatively lower the motor operation sound at the time of ascent. Alternatively, there is a possibility of lowering to the same level as when descending.

Further, since the ascending and descending speed can be changed even when the size of the operated object, for example, the blind changes, the operation sound is reduced by moving up and down relatively slowly with a large blind, and conversely, with a small blind. It is also possible to improve the usability by raising and lowering slowly.

When a person operates the vehicle, the user moves the vehicle up and down at a relatively high speed to give priority to ease of use. The operation can be performed at a relatively low speed, so that the operation sound is relatively low and the surrounding people do not care.

With these features, instead of an expensive motor for driving a silent drive using a sound absorbing material or having a margin, a program content of a microcomputer for reducing the rotational speed of the motor depending on the operating conditions or operating conditions of the blinds. Therefore, an opening / closing device such as an electric blind, which does not bother the operation sound, is realized at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing a configuration of an electric blind of one embodiment of the present invention.

FIG. 2 is a waveform diagram of a signal transmitted to the serial signal receiving circuit shown in FIG.

FIG. 3 is a flowchart showing an operation of the electric blind shown in FIG. 1 in response to an operation signal from an operation switch.

FIG. 4 is a flowchart showing an operation of the electric blind shown in FIG. 1 in response to an operation signal from a serial signal receiving circuit.

FIG. 5 is a schematic block diagram showing a configuration of an electric blind according to another embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the electric blind shown in FIG.

FIG. 7 is a flowchart showing constant speed raising / lowering control of the electric blind shown in FIGS. 1 and 5;

[Explanation of symbols]

 1,11 Operation switch 1a “Up” key 1b “Down” key 1c “Stop” key 1d “Speed switching” key 2 Serial signal receiving circuit 4 Motor control circuit 5,15 Microcomputer 5a, 5b Constant speed value for setting 5c, 15d, 15e Constant speed value for operation 5f Continuous ON timer 13 Speed setting switch

Claims (5)

(57) [Claims] An operation switch means for performing operations such as "up,""down,""stop," and "speed switching" of an object to be operated such as a blind, a roll screen, and a shutter, and raising or lowering the object to be operated. Based on a driving means such as a motor for lowering and an operation signal from the operation switch means,
Lifting means for raising and lowering the operated body at a constant speed at a higher speed than when the operated body is lowered and opening and closing the operated body. 2. The electric switching device according to claim 1, wherein a process of switching a constant speed value at the time of elevating operation by the elevating means is enabled by a speed switching operation by the operation switch. 3. A second operation switch means for performing operations such as "up,""down,""stop," and "speed switching" separately from the operation switch means, and a lifting operation by the second operation switch means. 2. The electric switchgear according to claim 1, wherein the constant speed value is made different from the constant speed value of the operation switch means. 4. The electric switchgear according to claim 1, wherein a process for increasing the constant speed value is enabled by a continuous ON time of the operation switch means of "up" and "down" of said operation switch means. 5. A process for setting a speed in a constant speed operation during elevating and lowering of the operated body, a process for performing a constant speed operation using an input value from the speed setting switch as a reference of the constant speed value. The electric switchgear according to claim 1, wherein: