JP2536306Y2 - Control device for tubular motor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a tubular motor, and more particularly to a control device capable of mechanically setting a rotation stop position of the motor.

[0002]

2. Description of the Related Art In a switch such as a shutter, a seat, a tent or a blind, a tubular motor is built in a tubular member, and the tubular member is rotated forward or backward by the motor, and a shutter or the like is wound around the tubular member. Unwinding and electric opening and closing are performed. In this case, a control device that detects a winding upper limit position and a winding lower limit position of a shutter or the like and automatically stops energization of the motor is widely used.

[0003] As shown in Japanese Patent Publication No. 49-47116, this type of tubular motor control device includes:
A lead screw that rotates synchronously with the cylindrical member is provided, a female screw is meshed with the lead screw, the female screw is screwed on a screw rod, a cam plate is attached to the end thereof, and the female screw is advanced and retracted by rotation of the lead screw, There is a lead screw type in which the cam plate is kicked by the male screw to turn on / off the limit switch and the motor is stopped. However, in such a lead screw type control device, since the position of the cam plate with respect to the limit switch is set by turning the screw bar by hand, it takes time to set the ON / OFF position of the limit switch, and for some reason, If the plate exceeds the set position, the cam plate and the like may be damaged.

On the other hand, as shown in the prior art of Japanese Patent Publication No. 63-596, the rotation of a cylindrical member is transmitted to a cam wheel by a pinion gear, and the cam wheel is rotated. There has been proposed a turning lever type control device in which when the lever is engaged, the limit switch is turned ON / OFF by the lever to stop the motor. In this turning lever type control device, when the limit switch ON / OFF position is set, the pinion gear on the driving side is disengaged from the cam wheel by an external slide operation of the slide member, and the heart cam is moved by the arm connected to the slide member. Is rotated to set the cam wheel to a predetermined origin position, the slide member is returned at a desired rotational position, and the limit switch is returned to a state where the motor can be energized.

[0005]

[Problems to be Solved by the Invention] However, in the conventional turning lever type control device, the limit switch is ON / OF.
At the time of setting the F position, it is necessary to keep pushing the slide member while the shutter or the like is being wound around the cylindrical member, and the shutter or the like may come into contact with the hand and cause injury, which is preferable in terms of safety. It was not something. Further, in the conventional turning lever type control device, one coil spring is interposed between the slide member and the turning arm, and both the pinion gear and the turning lever are biased toward the cam wheel. When the lever is engaged with the concave portion of the cam wheel, the urging force of the pinion gear is weakened, and the drive pinion gear may be detached from the cam wheel, resulting in a problem that the operation reliability of the device is poor. Needless to say, the spring force of the coil spring may be set to be strong, but in that case, there is a problem that the reset operation of the slide member becomes heavy, which is a factor that hinders commercialization. In view of this problem, the present invention provides a tubular motor control device that can guarantee the safety of setting the ON / OFF position of the limit switch, that is, the setting of the winding upper limit position and the unwinding lower position of the shutter. Another object of the present invention is to provide a tubular motor control device in which the operation reliability of the device is improved.

[0006]

SUMMARY OF THE INVENTION Therefore, a control device for a tubular motor according to the present invention rotates a cam wheel by rotation of a driving motor for a tubular member, and an origin position of the cam wheel by an actuator associated with the cam wheel. In the control device of the tubular motor in which the limit switch is operated to cut off the motor power supply and the driving of the tubular member is stopped,
A reset knob provided so as to be able to be pushed and rotated, and a member for locking the knob in a pushed state by pushing and rotating the reset knob, and releasing the lock by rotating or reversely rotating the reset knob. Stop means, in conjunction with the push-in operation of the reset knob, disengages the drive-side gear from the cam wheel, returns the cam wheel to the home position, and operates the limit switch to energize the motor. The gist of the present invention is that the drive gear is connected to the cam wheel by return, and reset means is provided for returning the limit switch to a motor power cutoff operation state by an actuator.

In order to improve the operation reliability of the apparatus, a guide roller which can slide on a cam wheel is supported at one end of the leaf spring, and the leaf spring is disposed so as to face the switch operating portion of the limit switch. Then, the other end of the leaf spring is fixed to a limit switch to constitute an actuator, and the leaf spring is elastically deformed by the cam wheel at the origin position of the cam wheel to cause the limit switch to perform the motor energizing cutoff operation while the swing arm A drive-side gear is attached to one end and urged by a second leaf spring in the direction of connection with the cam wheel. A reset arm is provided at the other end of the swing arm to constitute reset means. Swing the swing arm to make the first
Elastically deforms the leaf spring in the motor power supply cutoff direction, elastically deforms the second leaf spring to separate the drive side gear from the cam wheel, and causes the reset arm to abut against the heart cam of the cam wheel so that the cam wheel is moved. Return to the home position and return the swing arm by releasing the reset knob.
The guide roller of the first leaf spring is brought into sliding contact with the cam wheel, the second leaf spring is restored, the drive-side gear is connected to the cam wheel, and the reset arm is disengaged from the heart cam.

[0008]

When setting the upper limit position or lower limit position of the shutter or the like, when the reset knob is pushed in and rotated, the knob is locked in the pushed state by the locking means. Then, the reset means is operated in conjunction with the push of the reset knob, the driving gear is disengaged from the cam wheel and becomes free, and the cam wheel is returned to the home position. So that
The tubular member winds or unwinds a shutter or the like. When the shutter or the like is at a desired position, the lock is released when the reset knob is further rotated or reversely rotated, so that when the reset knob is returned, the drive side gear is connected to the cam wheel by the reset means. At the same time, the limit switch is also returned to the motor power cutoff operation state by the actuator. Thus, during the setting operation of the tubular member, the upper limit position or the lower limit position of the shutter or the like can be set by releasing the reset knob.

Further, the guide roller is urged against the cam wheel by the first leaf spring, and the first leaf spring is elastically deformed by the cam wheel at the home position to cause the limit switch to cut off the motor power supply, while the swing arm A drive gear is attached to one end of the arm and biased in the connection direction with the cam wheel by a second leaf spring, and a reset arm is provided at the other end of the swing arm to return the cam wheel to the home position. Therefore, the drive gear can be reliably urged in the meshing direction and the guide roller can be urged to the cam wheel, and the operation reliability of the apparatus can be improved. Further, since a separate spring member is provided on the reset knob and can be urged in the return direction, the pushing operation of the reset knob can be lightened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to specific examples shown in the drawings. 1 to 8 show a control device of a tubular motor according to an embodiment of the present invention. In the figure, a mounting base 1 is configured by combining a plurality of components, and a concave portion 1a is formed on one side of the mounting base 1. A limit case 2 having a substantially U-shaped cross section is fixed to the other side of the mounting base 1 by a flathead screw 2a.
The upper limit mechanism A and the lower limit mechanism B are built therein.

In the upper limit mechanism A, an idler gear 3 is rotatably supported at the upper end of the limit case 2 by a pin 3a in the longitudinal direction of the case. 4 is supported and meshed with the idler gear 3, and the spur gear 4
A bevel gear 5 is formed integrally and coaxially on one end side of. The limit case 2 has a pin 6 in the case width direction.
The second bevel wheel 6 is rotatably supported by a, and the second bevel gear 6 is meshed with the bevel gear 5, and the second bevel gear 6 is integrally and coaxially formed with a spur gear 7. Have been.
A timing gear 8 is meshed with the spur gear 7, and the timing gear 8 is rotatably supported by a wheel pin 9 in the case width direction together with the wheel gears 10, 11 and the cam wheel 12, and the timing gear 8 and the wheel gear 10, A pinion gear 13 for transmitting rotation is disposed between the wheel gear 10 and the wheel gear 11, and between the wheel gear 11 and the cam wheel 12, and the cam wheel 12 is required for winding and unwinding a shutter or the like. It rotates by a predetermined angle, that is, the length of the cam surface 12a, that is, intermittently rotates with respect to the rotation speed of the cylindrical member.

A swing arm 1 is provided in the limit case 2.
4 is rotatably supported by a pin 14a parallel to the wheel pin 9. The pinion gear 13 is supported at the lower end of the swing arm 14, and the lower end of the swing arm 14 is pinion geared by a leaf spring 15. 13 is urged to swing in the meshing direction. Cam wheel 12 of swing arm 14
A reset arm 16 is formed integrally with the side portion, and a heart cam 17 is formed integrally with the cam wheel 12. The cam wheel 12 is returned to the origin position O by the contact between the reset arm 16 and the heart cam 17. It has become so.

An upper limit switch 18 is fixed to the limit case 2, a lower end of a leaf spring 19 is fixed to the limit switch 18, and a guide roller 20 is supported at the tip of the leaf spring 19. The leaf spring 19 is in sliding contact with the cam surface 12a of the cam wheel 12, and the leaf spring 19 is deformed in accordance with the sliding contact between the guide roller 20 and the cam surface 12a.
Normally, the limit switch 18 is kept in the ON state,
It is turned off at the origin position of the cam wheel 12.

Further, idler gears 21 and 22 are sequentially meshed with the timing gear 8, and a lower limit mechanism B is connected to the idler gear 22. Since the lower limit mechanism B has the same structure as the upper limit mechanism A, parts having the same functions are denoted by the same reference numerals. Also, since two idler gears 21 and 22 are provided, the wheel gear 1 in the lower limit mechanism B
0, 11 and the cam wheel 12 rotate in the opposite direction to that of the upper limit side.

An upper limit reset knob 30 and a lower limit reset knob 31 are inserted into the upper end surface of the mounting base 1 so as to be able to be pushed in, and a cover 40 for covering the upper sides of the reset knobs 30 and 31 is detachably mounted. Knob 3
Operation grooves are formed on the upper end surfaces of 0 and 31 so as to be rotatable by a tool or the like, and locking pieces 32 are formed on lower ends of the reset knobs 30 and 31. On the other hand, a locking step 1b is formed on the mounting base 1, and the reset knob 30,
The locking piece 32 is locked by a rotating operation of the locking device 31 in the pushed state. A reset cam 33 is provided on the mounting base 1 so as to be swingable, and reset members 34 are slidably disposed on both side surfaces of the limit case 2. A spring member 35 for biasing the
The slide operation is performed by the swing of the reset cam 33. The reset member 34 has a substantially L-shaped guide groove 36, into which the pin 13a of the pinion gear 13 is slidably inserted.
3a slides in the guide groove 36, and the pinion gear 13
Are separated from between the timing gear 8 and the wheel gear 10, between the wheel gear 10 and the wheel gear 11, and between the wheel gear 11 and the cam wheel 12.

A cylindrical limit gear 23 having a gear on the inner peripheral surface of the tip is rotatably mounted on the mounting base 1, and the limit gear 23 is meshed with the idler gear 3. Further, a sleeve 24 is externally mounted on the mounting base 1, such an assembly is fitted in a cylindrical case 25 and fixed by a countersunk screw 26, and is further mounted in a cylindrical member having a built-in drive motor, speed reducer and the like. A cylindrical member is fitted on the outer peripheral surface of the limit gear 23.

FIG. 7 shows a configuration of a drive motor energizing circuit. In the drawing, M is a driving motor for driving the tubular member, 5 is an operation switch for operating the driving motor M, and 6 and 7 are contact pieces of upper limit switch and lower limit switch 18.

Next, the operation will be described. For example, when the operation switch 5 is tilted to an open contact of a shutter or the like, the drive motor M rotates forward, and the rotation is reduced by a speed reducer and transmitted to the tubular member. Take up. At this time, the rotation of the cylindrical member is performed by the limit gear 23, the idler gear 3, the spur gear 4, the bevel gears 5, 6, the spur gear 7, the timing gear 8, the pinion gear 13, and the wheel gear 1.
0, the pinion gear 13, the wheel gear 11, and the pinion gear 13 are transmitted to the cam wheel 12, the cam wheel 12 is intermittently rotated, the guide roller 20 slides on the cam surface 12a of the cam wheel 12, and the upper limit The switch 18 is turned on. When the shutter or the like reaches the upper limit position, the cam wheel 12 becomes the origin position O, the leaf spring 19 is deformed by the guide roller 20 which is in sliding contact with the cam surface 12a, and the upper limit switch 18 is turned off. , The rotation of the drive motor M is stopped, and the winding of the shutter or the like by the tubular member is also stopped. Thus, the winding of the shutter or the like is automatically stopped. On the other hand, when the shutter or the like is wound, the rotation is transmitted via the idler gears 21 and 22 in the lower limit mechanism B, and the cam wheel 12 intermittently reversely rotates, but the guide roller 20 slides on the cam surface 12a. , The lower limit switch 19 is ON. Therefore, when the setting of the upper limit position is completed, and the operation switch 5 is then tilted to the close side contact, the drive motor M rotates in the reverse direction and the shutter or the like is unwound from the tubular member. Similarly, the lower limit switch 18 is turned off, and the unwinding is stopped.

In order to set the winding upper limit position of the shutter or the like, first, the upper limit reset knob 30 is pushed in with a tool, for example, a screwdriver or the like, and this is rotated to lock the locking piece 32 with the locking step portion 1b. Then, the reset knob 30 is pushed and held. Then, the reset cam 33 is swung by pushing the reset knob 30, and the reset member 3 is reset.
4 is slid against the spring force of the spring member 35, and the pin 13a of the pinion gear 13 slides in the guide groove 36 of the reset member 34 to swing the swing arm 14.
Pinion gear 13 is timing gear 8 and wheel gear 1
0, the wheel gear 10 is separated from the wheel gear 11 and between the wheel gear 11 and the cam wheel 12, and at the same time, the swing arm 14 kicks the leaf spring 16 to turn on the upper limit switch 18. The reset arm 16 comes into contact with the heart cam 17 of the cam wheel 12 as the swing arm 14 swings, and the cam wheel 12 is rotated back to the original position O. When the operation switch 5 is turned to the open side contact in this state, the drive motor M is energized and rotates forward, and the tubular member winds up the shutter and the like. When the shutter or the like reaches a predetermined upper limit position, when the operation switch 5 is returned to the neutral position, the power supply to the drive motor M is stopped, and the rotation of the tubular member is stopped. After that, when the upper limit side reset knob 30 is rotated by a screwdriver or the like to release the locking piece 32 from the locking step portion 1b, the reset member 34 returns to the original position by the spring force of the spring member 35, and the reset knob When the pinion 30 is pushed up, the pin 13a of the pinion gear 13 returns to the original state, the swing arm 14 also swings and returns, and the pinion gear 13 meshes with each of the gears 8, 10, 11, and 12 (see FIG. 8). While the limit switch 18 returns to the OFF state by the leaf spring 19 (see the dashed line) (see the dashed line in FIG. 8), the reset arm 16 is detached from the heart cam 17, and thus the winding upper limit position of the shutter or the like can be set.

Next, when setting the unwinding lower limit position of the shutter or the like, this time, the lower reset knob 31 is pushed in and rotated to maintain the pushed state, and then the operation switch 5 is moved down to the close contact to release the shutter. After the operation switch 5 is returned to the neutral position when, for example, is unwound to the predetermined unwind position, the reset knob 31 may be reversely rotated to return to the original state. When the reset knobs 30, 31 are pushed and turned in this way, the reset knobs 30, 31 are locked in the pushed state, the cam wheel 12 is reset, and the limit switch 18 is turned on during that time. When the switch 5 is operated, the drive motor M is energized and the tubular member continues to rotate.
When 0 and 31 are returned, that position becomes the limit setting position.

In the tubular motor control apparatus of the present embodiment as described above, after the reset knobs 30 and 31 are locked in the depressed state, the upper and lower winding positions of the shutter and the like are set by operating the operation switch 5. Since the setting is made, it is not necessary to keep pushing the slide member while the shutter or the like is being wound on the cylindrical member, as in the control device disclosed in Japanese Patent Publication No. 63-596, and the hand is controlled by the control device. And safety can be guaranteed.

In the conventional turning lever type control device disclosed in the prior art of Japanese Patent Publication No. 63-596, a pinion gear is provided by interposing a single coil spring between a slide member and a turning arm. And the turning lever are biased toward the cam wheel, so that when the turning lever is engaged with the concave portion of the cam wheel, the urging force of the pinion gear is weakened, so that the drive pinion gear may be detached from the cam wheel. There is a problem that if the spring force of the coil spring is set to be strong, the reset operation of the slide member becomes heavy this time. On the other hand, in the tubular motor control device of the present embodiment, the leaf spring 19 urges the guide roller 20 against the cam surface 12a of the cam wheel 12, and the leaf spring 15 causes the pinion gear 13 to mesh with the cam wheel 12. Since the reset knobs 30 and 31 are urged in the return direction by the spring member 35 that slides and resets the reset member 34, the push-in operation of the reset knobs 30 and 31 can be lightened, and the pinion gear 13 can be moved. As a result, the guide roller 20 can be reliably urged in the meshing direction.
Can be reliably urged against the cam surface 12a, and the operation reliability of the apparatus can be improved.

[0023]

As described above, according to the control apparatus of the tubular motor according to the present invention, the reset knob can be pushed in and rotated to lock the push-in state. There is an effect that safety can be guaranteed when setting the lower-limit position of ejection.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a control device of a tubular motor according to an embodiment of the present invention.

FIG. 2 is a diagram when the control device shown in FIG. 1 is viewed from the right side.

FIG. 3 is a diagram when the control device shown in FIG. 1 is viewed from the left side.

FIG. 4 is a central sectional view showing the control device.

FIG. 5 is a sectional view showing a reset member in the control device.

FIG. 6 is a cross-sectional plan view showing the control device.

FIG. 7 is a configuration diagram showing a drive motor energizing circuit in the control device.

FIG. 8 is a diagram for explaining the operation of the control device.

[Explanation of symbols]

 1a locking step (locking means) 12 cam wheel (cam wheel) 12a cam surface 13 pinion gear 16 reset arm (resetting means) 17 heart cam (resetting means) 18 limit switch 19 leaf spring (actuator) 20 guide roller (actuator) 30) Upper limit reset knob 31 Lower limit reset knob 32 Locking piece (Locking means) 33 Reset cam (Resetting means) 34 Reset member (Resetting means) 35 Spring member (Resetting means)

Claims (4)

(57) [Scope of request for utility model registration] A cam wheel is rotated by rotation of a driving motor for a cylindrical member, and a limit switch is turned off at a home position of the cam wheel by an actuator in cooperation with the cam wheel to drive the cylindrical member to drive the cylindrical member. A control device for a tubular motor that is stopped, comprising: a reset knob provided so as to be able to be pushed and rotated; and a push-rotation operation of the reset knob, which locks the knob in a pushed state, and rotates the reset knob. A locking means for releasing the locking by a reverse rotation operation, and interlocking with the pushing operation of the reset knob, the driving gear is disengaged from the cam wheel, the cam wheel is returned to the home position, and the limit switch When the drive gear is connected to the cam wheel by returning the reset knob, A control device for a tubular motor, further comprising: reset means for returning the limit switch to a motor energization cutoff operation state by an actuator. 2. The control apparatus for a tubular motor according to claim 1, wherein two reset knobs, two locking means, and two reset means are provided to set a winding limit side and an unwinding limit side of the tubular member. 3. The guide roller 20 capable of slidingly contacting one end of a leaf spring 19 with the cam wheel 12.
And the leaf spring 19 is connected to the limit switch 18.
And the leaf spring 1
9, the other end is fixed to the limit switch 18.
2, the limit switch 18 causes the limit switch 18 to perform a motor energization cutoff operation, while the reset means includes a pinion gear 13 attached to one end of a swing arm 14 and a cam spring 1 provided by a second leaf spring 15.
2 and a reset arm 16 is provided at the other end of the swing arm 14. The swing operation of the swing arm 14 is performed by pushing in the reset knobs 30 and 31. As a result, the leaf spring 19 is elastically deformed in the motor power supply cutoff direction, the pinion gear 13 is disengaged from the cam wheel 12, and the reset arm 16 is brought into contact with the heart cam 17 of the cam wheel 12 so that the cam The wheel 12 is returned to the home position O, the swing arm 14 is returned by the release of the reset knobs 30 and 31, and the guide roller 20 of the leaf spring 19 slides on the cam wheel 12, and The pinion gear (13) is connected to the cam wheel (12), and the reset arm (16) is disengaged from the heart cam (17). Control device for tubular motor. 4. A reset member 34 associated with the swing arm 14 is slidably provided on the swing arm 14, and a reset cam 33 is provided on the reset knobs 30, 31.
The reset cam 33 is oscillated by pushing the reset knobs 30 and 31, and the oscillating arm 14 is oscillated by the reset cam 33 sliding the reset member 34. Item 3. A control device for a tubular motor according to Item 3.