JP2008156921A - Actuating device using stepping motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease the number of parts in providing an opening and closing device of a shutter for building, which opens and closes an opening by an informing means to inform the operating state of the opening and closing device. <P>SOLUTION: The opening and closing device 1 is constituted using a stepping motor 3 as a driving source. A control part 8 for controlling the drive of the stepping motor 3 is provided with the operating state informing means for detecting the operating state of the opening and closing device 1 and informing the same, and the information of the operating state informing means is given as an informing sound by a vibrating sound generated by the step-out of the stepping motor 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to the technical field of an operating device using a stepping motor such as an opening / closing device for a building shutter provided at an opening of a building.

  Generally, when the operating device is an opening / closing device such as a building shutter, an electric motor constituting the opening / closing device is configured to open / close by drive control by a control unit. In such a case, an operating state notifying unit is provided in the control unit, and when the shutter curtain is installed, notification based on setting completion detection when the upper limit position and the lower limit position are set, during normal use of the shutter curtain Detects various operating states, such as notification based on detection of opening or closing abnormality, notification based on detection of power failure recovery, and further notification when performing self-diagnosis (operation history) As a configuration having a notification function for notifying the user of the operating state of the shutter curtain, a configuration that can provide a smooth operation in response to an abnormality or failure of the switchgear has been proposed. .

Thus, in the switchgear provided with a notification function, a notification unit that performs a notification operation via a sound wave, a light wave, a radio wave, or the like is connected to the control unit, and the notification by the operation state notification unit is performed by the notification unit. Things have been proposed.
Japanese Patent Laid-Open No. 7-4163

  However, the conventional type uses an analog electric motor as a drive source for the switchgear, and a buzzer device for performing a notification operation by the operation state notification means is provided in the control unit for driving and controlling the electric motor. It is configured to be provided separately. For this reason, there is a problem that the number of parts increases due to the provision of a separate notification means, resulting in an increase in cost, and here is a problem to be solved by the present invention.

The present invention was created with the object of solving these problems in view of the above circumstances, and the invention of claim 1 outputs a signal to drive and control the stepping motor constituting the operating device. In providing the notifying means for notifying information related to the operating device in the control section, the notifying means is a signal having a frequency exceeding the maximum starting frequency of the stepping motor for the stepping motor whose driving is stopped by the control section. Is an operating device using a stepping motor configured to perform a notification operation using a vibration sound based on the step-out of the stepping motor as a notification sound.
The invention according to claim 2 is the operating device using the stepping motor according to claim 1, wherein the notification sound is a resonance sound with the peripheral member of the stepping motor accompanying the vibration of the stepping motor.
The invention according to claim 3 uses the stepping motor according to claim 1 or 2, wherein the notification sound is scale-controlled by changing the frequency of the signal from the control unit in a frequency region exceeding the maximum starting frequency. Actuating device.
According to a fourth aspect of the present invention, the volume of the notification sound is controlled by changing a current value of a signal from the control unit in a frequency region exceeding the maximum starting frequency. This is an operating device using the stepping motor.
According to the fifth aspect of the present invention, the notification sound is such that a signal from the control unit is intermittently outputted at a predetermined frequency in a frequency region exceeding the maximum starting frequency, and the predetermined time is changed. The operation device using the stepping motor according to any one of claims 1 to 4, wherein the length of the intermittent sound is controlled accordingly.

By using the invention of claim 1, the members can be shared, and the number of parts can be reduced, thereby contributing to cost reduction.
According to the second aspect of the present invention, an increase in sound volume and a change in timbre can be expected depending on the arrangement and materials of the peripheral members.
According to the third to fifth aspects of the invention, it is possible to realize an optimal notification operation according to the information content of the operating device, and to make the user distinguish and recognize the information content.

Next, embodiments of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes an opening / closing device for controlling opening / closing of a shutter curtain of a building shutter (not shown) provided at an opening of a building, which corresponds to the operating device of the present invention. The opening / closing device 1 includes a horizontally long base body 2 that is integrally fixed to a shutter case (not shown) disposed above the opening. A stepping motor 3 as a drive source of the opening / closing device 1 is integrally fixed to the left of the base body 2, and on the left side of the stepping motor 3, the rotational drive of the stepping motor 3 is decelerated to drive sprockets. A speed reducer 4 for outputting from 4a is fixed in an adjacent state, and the drive sprocket 4a is provided to project leftward from the left end of the base body 2. Then, the drive sprocket 4a is interlocked and connected to the driven sprocket 5a that is connected so as to rotate integrally with the take-up drum 5 around which the shutter curtain is wound, by using the chain 5b, so that the shutter accompanying the rotational drive of the drive sprocket 4a. The curtain is configured to be opened and closed, and these basic configurations are the same as before.

Further, a control board 6 is integrally provided on the base portion 2, and the control board 6 includes a plurality of electronic devices 7 and a computer, and receives a signal (pulse signal) having a preset frequency. A control device 8 for output and a member such as a driver (driving device) 9 for receiving a signal from the control device 8 and supplying electric power to the stepping motor 3 are provided for controlling the driving of the stepping motor 3 by these members. The control unit C is configured.
An operation switch (not shown) provided in the opening is connected to the control device 8, and an opening signal is generated based on the operation of the opening switch PBU, the closing switch PBD, and the stopping switch PBS. The closing signal and the stop signal are set to be input.
On the other hand, the stepping motor 3 is provided with an encoder 10 that detects the opening / closing position of the shutter curtain based on the number of rotations of the stepping motor 3 so that the detection value from the encoder 10 is input to the control device 8. Is set.
The control device 8 is provided with an opening / closing control means, and based on the input of any one of the opening, closing, and stop signals and the detected value from the encoder 10, an opening command signal corresponding thereto. The closing command signal and the stop command signal are output to the driver 9, and the stepping motor 3 is driven to rotate forward and backward by the electric power output from the driver 9 corresponding to each command signal, thereby opening and closing the shutter curtain. Is set to do.

Here, the configuration of the stepping motor 3 will be described in detail.
In recent years, the stepping motor 3 has been used as a component member of various actuators because of its characteristics that it is easy to control the rotation speed and rotation angle, and is highly versatile and available at low cost. 1 and 3, a rotary shaft 3b that is rotatably provided in the casing 3a, a plurality of small teeth 11a and 12a are formed on the outer peripheral surface, stacked in the direction of the rotary shaft 3b, and positioned in a circumferential direction with respect to each other A pair of rotors 11 and 12 that are integrally fitted to the rotating shaft 3b in a state of being displaced, a stator 13 that is fixed to the inner peripheral surface of the casing 3a, and that has a plurality of teeth 13a protruding toward the inner diameter side, and the teeth 13a Each of them is provided with a member such as a coil 14 formed by winding a winding. Small teeth 13b facing the small teeth of the rotor 11 are formed on the inner peripheral surface of each tooth 13a, and a signal (pulse signal) having a predetermined frequency set in advance by the control device 8 is received. Along with the output, electric power of a predetermined current value based on the predetermined frequency is sequentially supplied from the driver 9 to the coils 14 wound around the teeth 13a, and the teeth 13a are sequentially excited, The rotors 11 and 12 (rotary shaft 3b) are set to rotate by a magnetic change generated between the teeth 13b of the teeth 13a and the teeth 11a and 12a on the outer peripheral surfaces of the rotors 11 and 12 facing the teeth 13b. ing.

  By the way, in the stepping motor 3 configured as described above, there is a characteristic as shown in FIG. 4 between the torque of the rotating shaft 3b of the stepping motor 3 and the frequency of the output signal output from the control device 8 to the driver 9. It has. For this reason, when the opening / closing control means of the control device 8 controls the opening / closing of the shutter curtain, when the stepping motor 3 is stopped (when the shutter curtain is stopped), the maximum starting frequency (A The stepping motor 3 is controlled based on the power supply from the driver 9 corresponding to the signal by outputting a pulse signal set to a frequency within the range of the first region that is inside the starting characteristic curve that does not exceed The shutter curtain can be opened and closed by starting with a torque within the range of the first region. In the state where the stepping motor 3 is activated (driven) (when the shutter curtain is operating), the signal from the control device 8 is the first inside the continuous characteristic curve that does not exceed the maximum continuous response frequency (B). By outputting a command signal based on a pulse signal set to a frequency within the range of the second region, the stepping motor 3 can be connected to the first and second regions based on the power supply from the driver 9 corresponding to the signal. The driving can be continued with the torque within the range, and the opening / closing operation of the shutter curtain can be continued, or the driving stop operation of the shutter curtain can be performed.

  On the other hand, in the state where the stepping motor 3 is stopped, the output signal from the control device 8 becomes the frequency set to the frequency of the second and third regions exceeding the maximum starting frequency (A), and based on the signal When power is supplied from the driver 9, the stepping motor 3 steps out. Further, in the driving state of the stepping motor 3, the output signal from the control device 8 becomes a frequency set to the frequency of the third region exceeding the maximum continuous response frequency (B), and the power from the driver 9 is based on the signal. When the supply is made, the stepping motor 3 steps out. Furthermore, in the driving state of the stepping motor 3, the output signal from the control device 8 has a frequency set to the frequency of the first and second regions that does not exceed the maximum continuous response frequency (B). When the acting torque becomes the torque in the third region, the stepping motor 3 steps out. And when the stepping motor 3 steps out in this way, the stepping motor 3 vibrates and generates a vibration sound.

  Therefore, the opening / closing apparatus 1 in which the present invention is implemented includes an operating state notifying means (corresponding to the notifying means of the present invention) in addition to the opening / closing control means in the control device 8, When performing a notification operation to the user based on the detection, the stepping motor 3 is intentionally stepped out to vibrate the stepping motor 3, and the vibration sound generated by the vibration is operated as a notification sound. It is configured. As a result, in the opening / closing device 1 having a notification function, it is possible to generate a notification sound without providing a dedicated notification means, and it is possible to share the members, thereby reducing the number of parts and reducing the cost. It is comprised so that it can contribute to.

In the present embodiment, when the notification operation is performed by stepping out the stepping motor 3, the stepping motor 3 is set to be stepped out in advance in a drive stop state. For this reason, if the control device 8 theoretically outputs to the driver 9 a pulse signal in the second and third regions of the graph of FIG. However, in this embodiment, in order to ensure a reliable step-out phenomenon, a pulse signal in the third region, that is, a frequency region exceeding the maximum continuous response frequency, is used as a notification signal for generating a notification sound. It is set to output.
Here, when the stepping motor 3 is stepped out and used as a notification sound, the stepping motor 3 is supported by the base portion 2 and the speed reducer 4 is disposed adjacently. For this reason, when the stepping motor 3 vibrates, the base part 2 and the speed reducer 4, which are peripheral members of the stepping motor 3, and the members supported by the base part 2 vibrate, and the notification sound is generated by these. It is a resonance sound. By the way, the stepping motor vibrates and generates sound even when the stepping motor is stepped out. However, the stepping motor alone is stepped out by being stepped out while being incorporated in the base portion 2 together with the speed reducer 4 as in the present embodiment. It was confirmed that the volume was louder than the vibration sound and the tone was different. Therefore, in the present embodiment, the resonance sound is used as a notification sound so that the notification sound can be generated as a clearer sound.

  In the present embodiment, when the operating state of the switchgear 1 is detected, the control device 8 controls the frequency of the notification signal and the power (current value) output from the driver 9 to thereby generate the notification sound. The scale, sound pressure, and sound generation form are controlled so that different notification states are obtained. As a result, different notification states can be provided depending on the type of the detected operation state, so that an optimal notification can be made for the information content to be notified, and the user identifies the operation state of the switchgear 1. It is configured to be able to.

In other words, the notification signal from the control device 8 is set so as to selectively output two types of notification signals on the low frequency side and the notification signal on the high frequency side within the range of the third region. By generating the first notification signal on the frequency side, a low notification sound (vibration sound) can be generated, and by using the second notification signal on the high frequency side, a high notification sound can be generated. Thus, the scale (pitch) can be controlled to change according to the frequency.
Further, the notification signal from the control device 8 is set so as to selectively output the first and second notification signals by distinguishing the current value of the power from the driver 9 into two types, large and small. The sound pressure (volume) of the notification sound can be increased by increasing the value, and the sound pressure of the notification sound can be decreased by decreasing the current value. It is set so that it can be controlled to change.
In addition, the control device 8 has a state in which the first and second notification signals are continuously output, and a state in which two types of preset output times, that is, a predetermined long time and a short output time, are output. It is set so as to be selectively output in distinction, so that the sound generation form of the notification sound based on the first and second notification signals can be changed to continuous sound (pea), short intermittent sound (pi, pi, pi-・), It is set so that it can be controlled to change into three kinds of long intermittent sounds (Peep, Peep, Peep ...).
Incidentally, the change in the scale due to the frequency change and the change in the sound volume due to the current value are not limited to the two steps, and can be set in a plurality of steps. Furthermore, it is possible to change the scale within one continuous tone (for example, from a low tone to a gradually high tone) or to change the volume (for example, from a low volume to a gradually increasing volume). The sound generation state can be changed by appropriately changing the frequency, current value, output time setting, and the like. Further, when outputting intermittent sounds, a preset number of outputs may be output in addition to outputting for a preset time.

As described above, when the driving of the stepping motor 3 is stopped, the step-out sound of the stepping motor 3 is changed by controlling and outputting the frequency notification signal in the third region from the control device 8 as described above. The notification state of the notification sound with respect to the operating state can be distinguished and notified, but FIG. 5 shows a list of notification states (control states) of the notification sound with respect to the operation state, which will be described below with reference to FIG. .
As described above, the control device 8 outputs a command signal to the driver 9 based on the input of one of the open, close, and stop signals and the detected value from the encoder 10 in the open / close control means. The opening and closing of the shutter curtain is controlled by driving the stepping motor 3 forward and backward. In the open / close control state, if a large load is applied to the shutter curtain due to strong wind blowing on the shutter curtain or contact with an obstacle (overload state), torque against the frequency of the open / close command signal When the value, that is, the torque value acting on the drive sprocket 4a reaches the range of the third region in the characteristics of the stepping motor 3, the stepping motor 3 steps out and the rotation of the rotating shaft 3b (rotor 11) stops. For this reason, in the present embodiment, when a step-out phenomenon occurs in the process of outputting the closing command signal, the control device 8 determines that this is an obstacle detection from the detection value of the encoder 10 and immediately sets the opening command signal to a predetermined value. It is set to stop driving after output for time and causing the stepping motor 3 to reverse drive. In the obstacle detection state, the control device 8 sends the first notification signal with a large current value intermittently with a long output time for a predetermined time (for example, for 20 seconds) based on the operation state notification means. Alternatively, it is set to output 10 intermittent sounds.

  The control device 8 performs an operation of setting the upper limit position and the lower limit position of the shutter curtain using the encoder 10 as an initial setting when the shutter curtain is installed. In this case, the upper limit position and the lower limit position are set by a predetermined operation. When the above setting is made, the control device 8 is set to output the second notification signal with a small current value intermittently in a short output time for a predetermined time (for example, 5 seconds).

  Further, the architectural shutter of the present embodiment is provided with an emergency release lever (not shown). When the emergency release lever is operated, the brake device provided in the stepping motor 3 is opened, and the shutter is released. It is set so that the curtain can be operated manually. Then, the control device 8 sends a second notification signal to the small current in order to notify that the operation switch operation becomes invalid when the operation switch is operated in a state where the emergency release lever is operated. The value is set to be output intermittently with a short output time for a predetermined time (for example, 3 seconds).

  Further, the control device 8 of the present embodiment is provided with a crime prevention control means, and when the shutter curtain is fully closed, the shutter curtain is opened from the detection value of the encoder 10 even though the stepping motor 3 is not driven. It is set to determine that the suspicious person has entered the vehicle, and in the state where the suspicious person has been detected, the first notification signal is continuously output at a large current value for a predetermined time ( It is set to output (for example, 5 minutes).

  Further, the control device 8 is configured to be able to detect the recovery from the power failure state. In the state where the power failure recovery is detected, the control device 8 is intermittently used for a predetermined time with a small current value and a long output time. Is set to output during (for example, 10 seconds).

  In the present embodiment configured as described above, as a means for notifying the user of the operating state of the switchgear 1, vibration sound is generated by intentionally stepping out the stepping motor 3 that is the drive source of the switchgear 1. Thus, unlike the conventional motor, it is not necessary to provide a buzzer or the like as a notification means in addition to the motor serving as a drive source, and the common use of the members can be achieved, so that the number of parts can be reduced and the cost can be reduced.

  Furthermore, in this case, since the notification sound becomes a resonance sound of the peripheral member of the stepping motor 3, a change in timbre can be expected depending on the arrangement and material of the peripheral member.

  Moreover, in this case, the scale, sound pressure, and sound generation form are changed by controlling the first and second notification signals by changing the frequency, changing the current value, changing the output time, and the like. Since various and various notification states can be set, an optimal notification operation can be realized according to the operation state. In addition, by doing so, the user can be made to recognize and recognize the operating state of the opening / closing device 1, and prompt response can be achieved according to the operating state.

Needless to say, the present invention is not limited to the above-described embodiment, and the operation history is stored in the control unit of the stepping motor constituting the operation device to provide a self-diagnosis function, so that the operation history notification is stepped. The stepping motor can be configured to perform step-out of the motor, and even in this case, the stepping motor steps out from the control unit to the stepping motor driver in the same manner as the notification operation in the operation state control means. An alarm sound can be generated by outputting a signal having a frequency in the region. In this case, the number of obstacle detections, the number of times the shutter curtain is opened and closed, etc. Can be notified by outputting to
Further, the operation device using the stepping motor is not limited to the opening / closing device of the shutter for construction, and of course, it may be an opening / closing device such as a sliding door device, and any device using the stepping motor may be used. Even with such an actuating device, the present invention can be implemented.

It is a partial cross section front view of an switchgear. It is a block diagram explaining the control state of a control part. It is a side view of a stepping motor. It is a graph which shows the characteristic of a stepping motor. It is a table | surface figure explaining the alerting | reporting state by a stepping motor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening / closing device 2 Base body 3 Stepping motor 3b Rotating shaft 4 Reduction gear 6 Control board 8 Control part 9 Driver 10 Encoder

Claims (5)

  In providing a notifying means for notifying information on the actuating device in the control unit that outputs a signal to drive and control the stepping motor that constitutes the actuating device, the notifying means is provided to the stepping motor that is stopped by the control unit. On the other hand, an operating device using a stepping motor configured to output a signal having a frequency exceeding the maximum starting frequency of the stepping motor and to notify a vibration sound based on the stepping motor out-of-step as a notification sound.   The operating device using the stepping motor according to claim 1, wherein the notification sound is a resonance sound with a peripheral member of the stepping motor accompanying vibration of the stepping motor.   The operating device using the stepping motor according to claim 1 or 2, wherein the notification sound is scale-controlled by changing a frequency of a signal from the control unit in a frequency region exceeding a maximum starting frequency.   The operation of the notification sound using the stepping motor according to any one of claims 1 to 3, wherein the volume of the notification sound is changed by changing a current value of a signal from the control unit in a frequency range exceeding the maximum starting frequency. apparatus.   The notification sound is such that a signal from the control unit is intermittently output at a predetermined time in a frequency range exceeding the maximum starting frequency, and the length of the intermittent sound is changed by changing the predetermined time. The operating device using the stepping motor according to any one of claims 1 to 4, wherein the stepping motor is controlled.

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