JP3382120B2 - Control motor device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, opening control of a burner damper, smoke exhaust damper opening control, opening control of a valve body for adjusting the flow rate of gas or liquid, and further lever control. The present invention relates to a control motor device used for stroke control or the like, and more specifically to a means for easily and safely changing the set rotation angles of its cam shaft and output shaft.

[0002]

2. Description of the Related Art FIG. 1 is a diagram showing an example in which a conventional control motor device is used to open and close a burner damper. FIG. 2 is an electric circuit diagram of the control motor device in FIG. In this example, the control motor device 2 adjusts the opening degree θ of a damper 72 provided in a duct 70 that supplies air to the burner.

The conventional control motor device 2 is provided with a reversible motor 4, a speed change gear device 18 connected to the motor 4, and cams 31 to 34, which are connected to the speed change gear device 18 and will be described later. Cam shaft 20
It has an output shaft 22 for taking out an output, which is connected to the cam shaft 20, and the opening degree θ of the damper 72 is adjusted by the rotation of the output shaft 22. In this example, when the motor 4, the cam shaft 20, and the output shaft 22 rotate in the forward rotation direction (arrow A direction in this example), the opening degree θ increases, and when the motor 4 rotates in the reverse rotation direction (arrow B direction in this example), the opening degree θ increases. The degree θ becomes smaller. However, in this specification, "forward" and "reverse"
Simply indicates “one direction” and “reverse direction” of the rotation direction of the motor 4 and the like, and the arrow B direction is referred to as forward rotation and the arrow A direction is referred to as reverse rotation. good.

The motor 4 has a rotor 6 as shown in FIG.
And a normal rotation winding 8 for rotating the rotor 6 in the normal direction and a reverse rotation winding 10 for rotating the rotor 6 in the reverse direction. In this example, one end of the forward winding 8 is connected to the forward terminal 12, the other end is connected to the common terminal 14, and one end of the reverse winding 10 is connected to the reverse terminal 13.
The other ends are connected to the common terminal 14, respectively. The motor 4 may be a DC motor or an AC motor. Among them, a synchronous motor, a servomotor or the like having high stopping accuracy is preferable.

The speed change gear device 18 is normally provided between the motor 4 and the cam shaft 20 as in this example. However, when the rotation speed and torque of the motor 4 satisfy the necessary conditions, the speed change gear device 18 is provided. In some cases, it is not necessary to provide 18, and in that case, the cam shaft 20 and the output shaft 22 are directly connected to the motor 4.

A plurality of cams 31 to 34 are attached to the cam shaft 20. Referring to FIG. 4, the cams 31 to 34 can be rotated left and right with respect to the cam shaft 20 as indicated by arrow D, and the rotation angle relative to the cam shaft 20 can be adjusted. Although various means for enabling this rotation angle adjustment can be adopted, in this example, the means disclosed in Japanese Utility Model Publication No. 2-45557, that is, a ring member (not shown) fixed to the cam shaft 20 and each The rubber-like elastic ring is sandwiched between the cams 31 to 34 and compressed by the both, so that means for enabling the angle adjustment of each cam 31 to 34 is adopted. Each of the cams 31 to 34 has a peak 36 and a valley 37 on the outer peripheral portion thereof. Further, in this example, a knob 38 for adjusting the angle is provided.

The cam 31 includes a cam shaft 20 and an output shaft 22.
Is a large angle setting cam that sets a relatively large rotation angle, and the cam 32 is a small angle setting cam that sets a relatively small rotation angle of the cam shaft 20 and the output shaft 22.
Where to set the origin position of the cam shaft 20 and the output shaft 22 is arbitrary, but the cam shaft 20 and the output shaft 22 are
The cams 31 and 32 stop at the set rotation angles. The reason will be described later. The rotation angle of the cam shaft 20 and the like (the cam shaft 20 and the output shaft 22; the same applies hereinafter) corresponds to the opening degree θ of the damper 72 in this example. That is,
The opening degree θ of the damper 72 is large when the rotation angle of the cam shaft 20 or the like is large, and the opening degree θ of the damper 72 is small when the rotation angle of the cam shaft 20 or the like is small.

As shown in FIG. 4, switches 41 to 44 operated by the cams 31 to 34 are arranged near the cams 31 to 34, respectively. Each of the switches 41 to 44 is a double-throw switch in this example, and has one contact point a, the contact point b on the opposite side thereof, and a common contact point c, as shown in FIG. However, whether or not the cams 33 and 34 and the switches 43 and 44 are provided is arbitrary. As shown in FIG. 4, each of the switches 41 to 44 has a lever 46 for operating the common contact c thereof and a roller 48 provided at the tip thereof, and the roller 48 is a valley 37 of the cams 31 to 34. , The common contact c is switched to the contact a side, and the roller 48 moves to the cam 3
The common contact c is located at the mountain 36 of 1 to 34
Switch to the side.

Referring again to FIG. 1 or 2, the control motor device 2 has a plurality of terminals 50 to 54. When the motor 4 is normally rotated, the common terminal 50 and the normal voltage terminal 51 are used. When a driving voltage V is applied from the outside (for example, from a control panel that controls the control motor device 2) between and, the common terminal 50 is used when the motor 4 is rotated in the reverse direction.
The drive voltage V is applied from the outside between the reverse voltage terminal 53 and the reverse voltage terminal 53. The drive voltage V is not applied to both terminals 51 and 53 at the same time.

The switch 41 operated by the large angle setting cam 31 is a large angle setting switch, and the common contact c is connected to the forward rotation voltage terminal 51 and the forward rotation connecting to the forward winding 8 of the motor 4. A contact a is connected to the terminal 12. When the rotation angle of the cam shaft 20 or the like is smaller than the rotation angle set by the large angle setting cam 31, the large angle setting switch 41 has its roller 48 positioned at the valley 37 of the cam 31 and has a common contact. c is switched to the contact a side, and the common contact c is switched to the contact b side when the rotation angle of the camshaft 20 or the like is equal to or more than the set rotation angle (see also FIGS. 4 to 7). Therefore, when the drive voltage V is applied between the common terminal 50 and the forward rotation voltage terminal 51 when the rotation angle of the camshaft 20 or the like is smaller than the set angle, it is applied to the forward rotation winding 8 of the motor 4. As a result, the motor 4 rotates in the forward direction A and the angle of the cam shaft 20 and the like gradually increases, and when the set angle is reached, the switch 31 is switched to the contact b side by the cam 31 and the motor 4 stops. The stop position of the motor 4, that is, the rotation angle set by the cam 31 is the relative rotation between the cam 31 and the cam shaft 20 by rotating the cam 31 in the arrow D direction (see FIG. 4) as described above. It can be arbitrarily adjusted by adjusting the angle.

The switch 42 operated by the small angle setting cam 32 is a small angle setting switch, the common contact c is connected to the reverse voltage terminal 53, and the reverse terminal 13 connected to the reverse winding 10 of the motor 4 is connected. Is connected to the contact b. When the rotation angle of the camshaft 20 or the like is larger than the rotation angle set by the small angle setting cam 32, the small angle setting switch 42 has its roller 48 positioned at the crest 36 of the cam 32 and has a common contact. c is switched to the contact b side, and the common contact c is switched to the contact a side when the rotation angle of the camshaft 20 or the like is equal to or less than the set rotation angle (see also FIGS. 4 to 7). Therefore, when the rotation angle of the cam shaft 20 or the like is larger than the set angle, the common terminal 50
When the drive voltage V is applied between the reverse rotation voltage terminal 53 and the reverse rotation voltage terminal 53, the drive voltage V is applied to the reverse rotation winding 10 of the motor 4, the motor 4 rotates in the reverse rotation direction B, and the angles of the camshaft 20 and the like gradually decrease. , When the set angle is reached, switch 4 by cam 32
2 is switched to the contact a side and the motor 4 stops. The stop position of the motor 4, that is, the rotation angle set by the cam 32, is the relative rotation between the cam 32 and the cam shaft 20 by rotating the cam 32 in the arrow D direction (see FIG. 4) as described above. It can be arbitrarily adjusted by adjusting the angle.

As described above, according to the control motor device 2, the rotation angles of the cam shaft 20 and the output shaft 22 can be set to any large rotation angle and any small rotation angle. As a result, the opening degree θ of the damper 72 can be set to an arbitrary large opening degree (90 degrees or less in this example) and a small opening degree.

As can be seen from FIGS. 1 and 2, since the contact b of the large angle setting switch 41 is not used to control the motor 4, a single throw type switch without the contact b is provided. Also good. Similarly, since the small angle setting switch 42 does not use the contact a for controlling the motor 4, it may be a single throw type switch having no contact a.

[0014]

In the control motor device 2, when the rotation angle of the cam shaft 20 or the like set by the large angle setting cam 31 or the small angle setting cam 32 is changed, the cams 31 and 32 are simply changed. There are cases where it is sufficient to just shift (that is, the relative rotation angle with respect to the cam shaft 20), and cases where it is not sufficient to just shift.

This will be described in detail with reference to FIGS. 5 to 7.
Considering, for example, the case where the rotation angle of the camshaft 20 or the like is controlled to a small angle (that is, the opening degree θ of the damper 72 is set to a small opening degree), in this case, as described above, the common terminal 5 is used.
The drive voltage V is applied between 0 and the reverse rotation voltage terminal 53, and the rotation of the motor 4 is controlled by the small angle setting cam 32 and the small angle setting switch 42. At this time, the setting is made by the small angle setting cam 32. To make the rotation angle smaller, it is only necessary to shift the cam 32 in the direction of the arrow L shown in FIGS. 5 and 6. By doing so, the roller 48 of the switch 42, which has been on the contact a side until then, is positioned on the crest 36 of the cam 32, so that the switch 42 contacts the contact b.
, The drive voltage V is applied to the reverse rotation winding 10 of the motor 4 to rotate the motor 4 in the reverse rotation direction B, and the switch 42 is switched to the contact a side, so that the motor 4 stops. The camshaft 20 and the like have a new set angle.

However, when the rotation angle set by the small angle setting cam 32 is to be made larger, the cam 32 is set to the position shown in FIG.
6 and the arrow H shown in FIG. 6, the roller 48 of the switch 42, which has been on the contact a side until then, is still positioned in the valley 37 of the cam 32. There is no change in the state of 42, so the motor 4 remains stopped and does not rotate. Therefore, the camshaft 20 and the like do not have a new set angle.

In this case, conventionally, the drive voltage V is temporarily switched to the forward rotation voltage terminal 51 side to issue a command to make the rotation angle of the camshaft 20 or the like a large angle, and the motor 4 is rotated in the forward rotation direction A to perform the rotation. After the angle is once set to the large angle setting position, the drive voltage V is switched to the reverse rotation voltage terminal 53 side again to issue a command to set the rotation angle of the cam shaft 20 or the like to the small angle, and the motor 4 is rotated in the reverse rotation direction B. . As a result, the camshaft 20 and the like have a new set angle.

However, in such a method, the driving voltage V
Must be once switched to the forward rotation voltage terminal 51 side and then returned to the reverse rotation voltage terminal 53 side, and such switching of the drive voltage V is normally performed by a control panel different from the control motor device 2. In addition, since the control panel is often installed at a place apart from the control motor device 2, there is a problem that it takes a lot of time and effort.

Moreover, in the above method, although the rotation angle of the camshaft 20 or the like is originally controlled to be a small angle, the rotation angle reciprocates to a large angle setting position, which is not desired, but the control motor is concerned. Damper 72 by device 2
There is a problem that the control of such as is disturbed. For example, damper 7
When the burner is controlled to a low combustion by controlling the opening degree θ of 2 to a small opening degree, it is only necessary to adjust the opening degree θ to a slightly large value. Since the burner reciprocates up to 4 degrees, the burner once transitions to high combustion, and the combustion state of the burner changes unintentionally and greatly. No matter how much the adjustment is made, there are many cases in which it is troubled that the combustion state of the burner changes unintentionally.

The same problem as described above occurs when the rotation angle of the camshaft 20 and the like is controlled to a large angle. That is,
In this case, as described above, the drive voltage V is applied between the common terminal 50 and the normal rotation voltage terminal 51, and the rotation of the motor 4 is controlled by the large angle setting cam 31 and the large angle setting switch 41. At this time, when the rotation angle set by the large angle setting cam 31 is made larger, it is only necessary to shift the cam 31 in the direction of arrow H shown in FIGS. 5 and 7. By doing so, the roller 48 of the switch 41, which was on the side of the contact point b until then, moves the trough 37 of the cam 31.
Since it is located at, the switch 41 switches to the contact a side,
As a result, the drive voltage V is applied to the forward rotation winding 8 of the motor 4, the motor 4 rotates in the forward rotation direction A, the switch 41 is switched to the contact b side, and the motor 4 stops, which causes the camshaft 20 and the like. Becomes the new set angle.

However, when the rotation angle set by the large-angle setting cam 31 is made smaller, the cam 31 should be moved to the position shown in FIG.
7 and the arrow L shown in FIG. 7, the roller 48 of the switch 41, which has been on the contact b side until then, is still positioned on the mountain 36 of the cam 31. There is no change in the state of 41, so the motor 4 remains stopped and does not rotate. Therefore, the camshaft 20 and the like do not have a new set angle.

Also in this case, conventionally, the drive voltage V is once switched to the reverse rotation voltage terminal 53 side to issue a command to make the rotation angle of the cam shaft 20 or the like a small angle, and the motor 4 is rotated in the reverse rotation direction B to generate the rotation angle. Is once set to the small angle setting position, and then the drive voltage V is switched again to the normal voltage terminal 51 side to change the camshaft 20.
The motor 4 is rotated in the forward rotation direction A by issuing a command to increase the rotation angle of the motor. As a result, the camshaft 20 and the like have a new set angle.

Therefore, also in this case, since the drive voltage V must be returned to the original state after switching, there is a problem that it takes a lot of time and labor as described in detail above. Further, there is a problem that the control of the damper 72 and the like by the control motor device 2 is disturbed because the camshaft 20 or the like reciprocates to the small angle setting position once it is not desired.

Further, in order to avoid the problem of switching the drive voltage V as described above, the motor 4 and the cam shaft 20 are mechanically mechanically operated at the speed change gear device 18 when the rotation angle of the cam shaft 20 or the like is adjusted. In some cases, the cam shaft 20 or the like is separated and the cam shaft 20 or the like is rotated by hand instead of using the motor 4. However, in this method, if the force held by the hand is loosened, the cam shaft 20 or the like turns unintentionally. Therefore, there is still a great risk of disturbing the control of the damper 72 and the like. For example, the air flowing through the damper 72 exerts a force to fully close or fully open the damper 72. Therefore, if the force holding the camshaft 20 or the like by hand is weak, the damper 72 is unintentionally fully closed. Or it is very dangerous because the burner goes out of control when it is fully opened.

Therefore, according to the present invention, the set rotation angles of the cam shaft and the output shaft as described above can be set in any direction.
Its main purpose is to enable easy and safe change.

[0026]

A control motor device according to the present invention comprises a small-angle manual switch which is connected between the reverse voltage terminal and a forward winding of the motor and which connects and disconnects the two. It is characterized in that it is provided with a large-angle manual switch connected between the forward rotation voltage terminal and the reverse rotation winding of the motor and connecting and disconnecting the two.

According to the above construction, when the rotation angles of the cam shaft and the output shaft are controlled to a small angle and the small angle setting cam for setting the rotation angle is shifted in the large angle direction, the small angle is set. Just turn on the manual switch. By doing so, the drive voltage applied to the reverse rotation voltage terminal at that time is applied to the forward winding of the motor via the small angle manual switch, and the motor rotates in the forward rotation direction. Is switched to stop the rotation of the motor.
This brings the camshaft and output shaft to the new set angle. When the small angle setting cam is displaced in the small angle direction, the cam shaft and the output shaft have a new set angle by the same operation as the conventional example without operating the small angle manual switch.

When the rotation angle of the cam shaft and the output shaft is controlled to a large angle and the large angle setting cam for setting the rotation angle is shifted in the small angle direction, the large angle manual switch is turned on. You can do it. By doing so, the drive voltage applied to the forward voltage terminal at that time is applied to the reverse rotation winding of the motor via the large angle manual switch, and the motor rotates in the reverse rotation direction. Is switched to stop the rotation of the motor. This brings the camshaft and output shaft to the new set angle. When the large angle setting cam is shifted in the large angle direction, the same operation as the conventional example can be performed without operating the large angle manual switch.
The cam shaft and output shaft have a new set angle.

In this way, the set rotation angles of the cam shaft and the output shaft can be easily and safely changed in any direction.

[0030]

FIG. 8 is a diagram showing an example in which an example of a control motor device according to the present invention is used to open and close a burner damper. FIG. 9 is an electric circuit diagram of the control motor device in FIG. The same or corresponding portions as those of the conventional example shown in FIGS. 1 and 2 are designated by the same reference numerals, and the differences from the conventional example will be mainly described below. Moreover, the description content of FIGS. 3 to 7 is also applied to this embodiment.

The control motor device 2a has a structure in which a large-angle manual switch 61 and a small-angle manual switch 62 are added to the conventional control motor device 2 described above.

The large angle manual switch 61 is a double throw type in this example, and its common contact c is the forward voltage terminal 5 described above.
1 and the one contact b is passed through the reverse rotation terminal 13 and the reverse rotation winding 10 of the motor 4 (see FIG. 3).
, And the other contact a is open. As a result, the forward rotation voltage terminal 51 and the reverse rotation winding 10 can be switched on and off. The switch 61 has a contact a
Since it is not used, a single throw type switch without the contact a may be used.

The small angle manual switch 62 is also a double throw type in this example, and its common contact c is the reverse voltage terminal 5 described above.
3, the one contact a is connected to the forward winding 8 (see FIG. 3) of the motor 4 via the forward terminal 12 described above, and the other contact b is open. . As a result, the reverse voltage terminal 53 and the forward winding 8 can be switched on and off. Since this switch 62 does not use the contact b, it may be a single throw type switch without the contact b.

The manual switches 61 and 62 may be independent switches, but in this example, they are 1
It is constituted by a single spring-return type manual switch 60. When the manual switch 60 is pushed in the direction of arrow J, the common contact c on the switch 62 side is switched to the contact a side, and when pushed in the opposite arrow K direction, the common contact c of the switch 61 side is switched to the contact b side. When the switch is turned off, the common contact point c of both switches 61 and 62 becomes a contact point a or b.
It returns to neutral without touching. This manual switch 60 is
Since it has two sets of contacts, it is a bipolar type, and since each set of contacts consists of three contacts, it is a double throw type, but a single throw type may also be used as described above.

If both of the above manual switches 61 and 62 are constituted by one such manual switch 60, the number of parts, space and cost can be reduced as compared with the case where two independent switches are constituted. You can do it 1
Since it is sufficient to operate the individual switches, the operation becomes easier.

In this control motor device 2a, a case where the rotation angle of the cam shaft 20 or the like set by the large angle setting cam 31 or the small angle setting cam 32 is changed will be described.

First, referring to FIGS. 5 and 6, when the rotation angle of the cam shaft 20 or the like is controlled to a small angle (that is, the drive voltage V is applied to the reverse rotation voltage terminal 53 and the cam shaft 20 or the like is used). Is stopped at the rotation angle set by the small angle setting cam 32) and the small angle setting cam 32 for setting the rotation angle is displaced in the large angle direction H, the manual switch 60 is moved in the direction of arrow J. Press to contact switch 62 common contact c
Should be switched to the contact a side. The operation of pushing the manual switch 60 in such a manner is continued after the motor 4 starts to rotate until the rotation is stopped by the action described later. By switching in this way, the reverse voltage terminal 5
The drive voltage V applied to the motor 3 is applied to the forward winding 8 (see FIG. 3) of the motor 4 through the switch 62 and, in this example, the forward terminal 12, so that the motor 4 is driven.
Rotates in the forward rotation direction A, and the small angle setting cam 32 also rotates in the same direction, and eventually the roller 48 of the small angle setting switch 42 is positioned on the mountain 36 of the cam 32 and the common contact c of the switch 42 contacts the contact b. Switch to the side. This allows the forward winding 8 of the motor 4 to pass through the switch 62 until then.
In addition to the drive voltage V being applied to the motor 10, the same drive voltage V is applied to the reverse winding 10 of the motor 4 via the small angle setting switch 42, and the motor 4 is positively applied. The force of the same magnitude acts in both the reverse rotation directions to stop the rotation of the motor 4. As a result, the camshaft 20 and the like have a new set angle. The operation of the manual switch 60 may be stopped after confirming that the motor 4 has stopped. When the same drive voltage V is applied to both the forward rotation winding 8 and the reverse rotation winding 10 of the motor 4, a sound different from a normal operating sound is generated from the motor 4, and this sound causes the manual switch 60 to operate. You can also check when to stop the operation.

In the above case, the manual switch 6 is temporarily operated.
Even if 0 is pushed in the direction of the arrow K opposite to the above, in this case, the drive voltage V is applied to the reverse rotation voltage terminal 53 and not to the forward rotation voltage terminal 51, as described above, 4 does not rotate, nothing changes in the state, and no other inconvenience occurs.

Contrary to the above, when the small angle setting cam 32 is displaced in the small angle direction L, the camshaft 20 can be operated by the same operation as the conventional example without operating the manual switch 60.
Etc. have a new set angle. For the detailed operation, refer to the section of the conventional example.

Next, referring to FIGS. 5 and 7, when the rotation angle of the camshaft 20 and the like is controlled to a large angle (that is, the drive voltage V is applied to the forward rotation voltage terminal 51 and the camshaft 20 is rotated). 20 etc. is stopped at the rotation angle set by the large angle setting cam 31), and the large angle setting cam 31 for setting the rotation angle is displaced in the small angle direction L, the manual switch 60 is operated by the arrow K. Push in the direction and the common contact c of the switch 61
Should be switched to the contact b side. Even in this case, the operation of pressing the manual switch 60 in such a manner is continued until the rotation of the motor 4 is stopped and the rotation of the motor 4 is stopped by the action described later. When switching is performed in this manner, the drive voltage V applied to the forward rotation voltage terminal 51 at that time passes through the switch 61, and in this example, the reverse rotation terminal 13, the reverse rotation winding 10 of the motor 4. (See FIG. 3), the motor 4 rotates in the reverse rotation direction B, and the large angle setting cam 31 also rotates in the same direction, and eventually the roller 48 of the large angle setting switch 41 is positioned at the valley 37 of the cam 31. The common contact c of the switch 41 is switched to the contact a side. As a result, the motor 4 is switched through the switch 61 until then.
In addition to the drive voltage V being applied to the reverse rotation winding 10 of the above, the same drive voltage V is also applied to the forward rotation winding 8 of the motor 4 via the large angle setting switch 41. , The same amount of force acts on the motor 4 in both the forward and reverse directions, and the rotation of the motor 4 stops. As a result, the camshaft 20
Etc. have a new set angle. The operation of the manual switch 60 may be stopped after confirming that the motor 4 has stopped. In this case as well, a sound different from the normal operation sound is generated from the motor 4, so that the time point at which the operation of the manual switch 60 is stopped can be confirmed by this sound.

In the above case, the manual switch 6 is temporarily used.
Even if 0 is pushed in the direction of the arrow J opposite to the above, in this case, the drive voltage V is applied to the forward voltage terminal 51 and not to the reverse voltage terminal 53 as described above. 4 does not rotate, nothing changes in the state, and no other inconvenience occurs.

Contrary to the above, when the large angle setting cam 31 is displaced in the large angle direction H, the camshaft 20 can be operated by the same operation as the conventional example without operating the manual switch 60.
Etc. have a new set angle. For the detailed operation, refer to the section of the conventional example.

As described above, according to the control motor device 2a, the set rotation angles of the cam shaft 20 and the output shaft 22 can be easily and safely changed in any direction.

That is, as compared with the case of performing the operation of going to the control panel which is often installed at a remote place and once switching the drive voltage V to the opposite side and then returning it to the original state as in the conventional example. Then, since it is sufficient to simply operate the manual switch 60 provided in the control motor device 2a, it does not require any trouble and is short in time and very simple. Further, since the cam shaft 20 and the like do not rotate more than necessary (that is, from the original set angle to the new set angle or more), there is no fear that the control of the damper 72 or the like by the control motor device 2a is disturbed. Therefore, the set angle can be changed safely even while the burner or the like is in operation.

Further, the camshaft 20 and the like may rotate unintentionally compared to the conventional example in which the motor 4 and the camshaft 20 are mechanically separated at the speed change gear device 18 and the camshaft 20 and the like are manually rotated. There is no danger of disturbing the control of the damper 72 etc.
Very safe.

The peaks 36 and valleys 3 of the cams 31 and 32 are provided.
The usage of 7 may be reversed from the above embodiment. Such an embodiment is shown in FIGS. In this case, when the roller 48 of the small angle setting switch 42 rides on the mountain 36 from the valley 37 of the small angle setting cam 32 as shown in FIG. 10, the small angle setting position is set, and as shown in FIG. 11, the large angle setting is made. The large angle setting position is when the roller 48 of the switch 41 falls from the crest 36 of the large angle setting cam 31 to the valley 37. Therefore, in this case, the usage of the contacts of both switches 41 and 42 may be reversed between the contact a and the contact b as shown in FIG. 12, as shown in FIG. Also in this case,
Similar to the embodiment shown in FIG. 8 etc., the small angle setting cam 32
Is shifted in the large angle direction H and the large angle setting cam 31
There is no difference in that the manual switch 60 works effectively when the angle is shifted in the small angle direction L.

[0047]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, since the small angle manual switch and the large angle manual switch as described above are provided, the set rotation angles of the cam shaft and the output shaft can be easily changed in either direction. And can be changed safely.

According to the second aspect of the present invention, since the small angle manual switch and the large angle manual switch are constituted by one spring return type manual switch as described above, the number of parts, space and cost are reduced. In addition, the operation is simpler because only one switch needs to be operated.

[Brief description of drawings]

FIG. 1 is a diagram showing an example in which a conventional control motor device is used to open and close a burner damper.

FIG. 2 is an electric circuit diagram of a control motor device in FIG.

FIG. 3 is a circuit diagram of the motor shown in FIGS. 1 and 8.

FIG. 4 is a diagram showing a relationship between a cam and a switch in FIGS. 1 and 8.

5 is a diagram showing an example of setting positions of rotation angles of the cam shaft and the like in FIGS. 1 and 8. FIG.

FIG. 6 is a diagram illustrating a case where a small angle setting position of a cam shaft or the like in FIGS. 1 and 8 is changed.

FIG. 7 is a diagram illustrating a case where a large angle setting position of the cam shaft or the like in FIGS. 1 and 8 is changed.

FIG. 8 is a diagram showing an example in which an example of a control motor device according to the present invention is used for opening and closing a burner damper.

9 is an electric circuit diagram of the control motor device in FIG.

10 is a diagram showing an embodiment in which the usage of the ridges and valleys of the cam is reversed from the embodiment shown in FIG. 8 and the like, and corresponds to FIG.

FIG. 11 is a diagram showing an embodiment in which the usage of the ridges and valleys of the cam is reversed from the embodiment shown in FIG. 8 and the like, and corresponds to FIG. 7.

FIG. 12 is a diagram showing an embodiment in which the usage of the ridges and valleys of the cam is reversed from the embodiment shown in FIG. 8 and the like, and corresponds to FIG. 9.

[Explanation of symbols]

2a Control motor device 4 motor 8 Forward winding 10 Reverse winding 12 Forward rotation terminal 13 Reverse rotation terminal 20 cam shaft 22 Output shaft 31 Large angle setting cam 32 Small angle setting cam 41 Large angle setting switch 42 Small angle setting switch 51 Forward voltage terminal 53 Reverse voltage terminal 60 Manual switch 61 Large Angle Manual Switch 62 Small angle manual switch

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Claims (2)

(57) [Claims] 1. A reversible motor having a forward rotation winding and a reverse rotation winding, a forward rotation voltage terminal to which a drive voltage is applied when the motor is rotated in the forward direction, and a reverse rotation motor for rotating the motor in the reverse direction. A reverse rotation voltage terminal to which a driving voltage is applied, a cam shaft connected to the motor to which a cam is attached and an output shaft for extracting output, and a relative rotation angle between the cam shaft and the cam shaft can be adjusted. A large angle setting cam for setting a relatively large rotation angle and a small angle setting cam for setting a relatively small rotation angle, which are attached to the forward rotation voltage terminal and the forward rotation winding of the motor. A switch that is connected between and switches between the two, and is operated by the large angle setting cam, and the rotation angle of the cam shaft is smaller than the rotation angle set by the large angle setting cam. Connect between the large-angle setting switch that turns on between the forward rotation voltage terminal and the forward rotation winding, and turns off when the rotation angle is equal to or greater than that, and the reverse rotation voltage terminal and the reverse rotation winding of the motor. Is a switch for switching between the two, which is operated by the small angle setting cam,
When the rotation angle of the cam shaft is larger than the rotation angle set by the small angle setting cam, the small angle is set between the reverse voltage terminal and the reverse winding, and turned off when the rotation angle is equal to or smaller than the same. In a control motor device including a setting switch, a small-angle manual switch that is connected between the reverse rotation voltage terminal and the forward rotation winding of the motor and turns on and off the two, the forward rotation voltage terminal and the motor. And a large-angle manual switch that is connected between the reversing winding and the switch for turning on and off the two. 2. The small-angle manual switch and the large-angle manual switch have two sets of contacts which are interlocked with each other and are turned on and off in opposite directions, and when the operation is stopped, both sets of contacts are turned off. 2. The control motor device according to claim 1, wherein the control motor device comprises one spring return type manual switch.