JPH0480685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a curtain opening/closing drive device that drives curtains arranged on the left and right sides to open and close in opposite directions, for example.

(b) Conventional technology Conventionally, this type of curtain opening/closing drive device has, for example, fitted a drive pulley that drives the left and right curtains to the output shaft of a motor, and caused a belt to interlock with this pulley. The leading runners installed on the side and front sides are respectively locked to the ends of the left and right curtains, and the above-mentioned motors are driven in forward and reverse directions to open and close the curtains placed on the left and right sides in opposite directions. It is composed of

To control the stop of the motor at the moving end of the curtain, for example, a limit switch is installed on the curtain rail at the moving end of the leading runner, and this limit switch is operated by the movement of the curtain to turn off the motor. If the device is installed to control the limit switch, wiring connection work for the limit switch is required, and this work is very troublesome.

As another means, if the overload of the motor received at the moving end of the curtain is detected electrically or mechanically, and the motor is controlled to stop using this detection signal, it is possible to However, it also has the problem of complicating the structure.

(C) Problems to be Solved by the Invention This invention supports an internal gear of a planetary gear mechanism installed in a drive system so as to be rotatable within a predetermined range, and supports the internal gear at the moving end of the curtain. It is an object of the present invention to provide a curtain opening/closing drive device that has a simple and compact structure by controlling a drive source to stop by rotating it with a stop load received.

(d) Means for Solving the Problems The present invention is a curtain opening/closing drive device comprising a drive pulley for driving the curtain to open and close, and a drive source for driving the drive pulley in forward and reverse directions, the curtain opening/closing drive device comprising: a drive pulley for driving the curtain to open and close; The drive source is connected to an internal gear, a carrier that pivotally supports a planetary gear that meshes with the gear, and a sun gear that meshes with the planetary gear, with one of the carrier and sun gear being an input part and the other being an output part. A planetary gear mechanism set in each of the above is interposed, and the internal gear of the planetary gear mechanism is supported so as to rotate between a neutral position and each operation position in both forward and reverse rotation directions, and A regulating portion is formed in the internal gear to regulate the position of the internal gear in the neutral position with respect to the curtain opening/closing load, and to regulate the position with a biasing force that releases the position regulation in response to the stopping load at the opening/closing end of the curtain, When a stopping load is applied to the output section of the planetary gear mechanism at the moving end of the curtain and the internal gear rotates to the operating position of the regulating section, a switch is operated by this rotation to stop and control the drive source. It is characterized by being a curtain opening/closing drive device installed opposite to an internal gear.

(e) Effect In the curtain opening/closing drive device of the present invention, when opening and closing the curtain, the internal gear is regulated to the neutral position of the regulating part and its rotation is prevented, so that the output of the planetary gear mechanism is An output is generated from the drive pulley to rotate the drive pulley in the forward or reverse direction to open or close the curtain.

On the other hand, when the curtain comes into contact with the open or closed moving end and is stopped, and the stop load is applied to the output section of the planetary gear mechanism, the output section does not rotate, so the output input to the input section is Against the urging force applied to the internal gear via the planetary gear and regulated to the neutral position of this internal gear,
This is rotated to the operating position, and this rotation operates the switch to control the drive source to stop.

Note that the rotation direction of the above-mentioned internal gear and the output section, that is, the carrier or sun gear, is as follows.
Since the directions are opposite due to the interposition of the planetary gear, when the curtain stops at one end of the movement (open or closed) and then moves to the other end of the movement, the above-mentioned interface is activated at the beginning of this movement. The null gear rotates in the opposite direction to the previous rotation, moves from its operating position to a neutral position, and is regulated in position.

(F) Effects of the Invention According to the present invention, the internal gear of the planetary gear mechanism is rotated by the stop load received at the moving end of the curtain, and the drive source is controlled to stop by operating the switch using this rotation force. Therefore, the stop control is reliable, and there is no need for a complicated device or mechanism to detect overload of the drive source, such as a motor, or an overload detection circuit, and the structure of the opening/closing drive mechanism is simple. and can be configured compactly.

(g) Embodiment of the invention An embodiment of the invention will be described in detail below based on the drawings.

The drawing shows a curtain opening/closing drive device. In FIG. 1, 1 indicates the left curtain (hereinafter simply referred to as the left curtain) suspended from the curtain rail 2, and 3 indicates the right curtain suspended from the curtain rail 2. (hereinafter simply referred to as the right curtain), the left end of the left curtain 1 and the right end of the right curtain 3 are secured to curtain stops (not shown), and above each of the left and right curtains 1 and 3 is an aluminum An endless first belt 5 and a second belt 6 are disposed to run within a guide rail 4 (see FIG. 2).

Then, the leading runner 7 for the right curtain 3 is fixed to the back side part 5a of the first belt 5 disposed on the upper side,
A leading runner 8 for the left curtain 1 is fixed to the front side part 6a of the second belt 6 disposed on the lower side.

Further, the first belt 5 described above is stretched between the first drive pulley 11 fitted to the first output shaft 10 of the differential gear mechanism 9 on the right side and the first driven pulley 12 on the left side that is rotatably provided. The second belt 6 is stretched between the second drive pulley 14 fitted to the second output shaft 13 of the differential gear mechanism 9 and the second driven pulley 15 which is rotatably provided. There is.

Here, each of the above-mentioned pulleys 11, 12, 14, 1
As is clear from FIG. 2, 5 is a sprocket-like pulley with protrusions integrally formed on its circumferential surface at equal intervals, and each of the belts 5 and 6 described above has locking holes 16 corresponding to the protrusions. The holes are drilled at equal intervals.

Leading runners 7 and 8 are provided separately on the back side 5a and the front side 6a of the first belt 5 and the second belt 6 stretched so that they can run in the same direction.
In addition, the ends of the left and right curtains 1 and 3 are connected via respective locking devices 17 and 18, so that the left and right curtains 1 and 3 can be opened and closed in opposite directions.

The first runner 7 on the side of the first belt 5 mentioned above is the second
As shown in FIG. 3, a guide roller 19 is provided which contacts the inner surface 4a of the bottom wall of the guide rail 4, and the hanging piece 7a of the leading runner 7 is made to protrude downward from the bottom opening 4b of the guide rail 4. This hanging piece 7
The upper end hook portion of the above-mentioned locking tool 17 is locked into the through hole 21 of the locking plate 20 which is screwed to a.

Further, as shown in FIGS. 2 and 4, the leading runner 8 on the side of the second belt 6 described above has a guide roller 22 that rolls into contact with the inner surface 4a of the bottom wall of the guide rail 4, and the hanging piece 8a of the leading runner 8 is made to protrude downward from the bottom opening 4b of the guide rail 4, and the upper end hook portion of the aforementioned locking tool 18 is locked in the through hole 23 of this hanging piece 8a.

In FIG. 1, each of the aforementioned first drive pulleys 11
The output shaft 25 of the reversible motor 24 that serves as the drive source for the second drive pulley 14 has a planetary gear mechanism 26
7, an output gear 28 is provided, and this output gear 2
8 is meshed with an input gear (so-called ring gear) 29 in the differential gear mechanism 9 described above.

This differential gear mechanism 9 includes the input gear 29 described above.
, two pinions 30 and 31, and two side gears 32 and 33, with the upper side gear 32
The aforementioned first output shaft 10 is attached to the lower side gear 33, and the aforementioned second output shaft 13 is attached to the lower side gear 33, respectively.

Further, the lower planetary gear mechanism 26 described above is connected to a sun gear 34 fitted to the output shaft 25 of the reversible motor 24.
, a plurality of planetary gears 35 . . . , an internal gear 36 , and a carrier 37 that pivotally supports the planetary gears 35 .
It is connected to 8.

The above-mentioned upper planetary gear mechanism 27 has a sun gear 3
8, a plurality of planetary gears 39..., an internal gear 40, and a carrier 41, and the central shaft portion of the carrier 41 is connected to the output gear 28 described above.

Furthermore, an electromagnetic clutch 43 is disposed on the outer periphery of the internal gear 40 in the upper planetary gear mechanism 27, and is turned off in conjunction with the reversible motor 24 when the left and right curtains 1 and 3 stop moving. When the reversible motor 24 rotates, the electromagnetic clutch 4
3 is turned on, and internal gear 4 is activated by this electromagnetic force.
0 is locked, and conversely, when the reversible motor 24 is stopped, the electromagnetic clutch 43 is turned off and the internal gear 40 is set in a free state.

Furthermore, in the lower planetary gear mechanism 26 mentioned above,
A mechanism for controlling the reversible motor 24 to stop is configured.

As shown in FIG. 5, the above-mentioned planetary gear mechanism 26
An operating ring 44 is integrally fixed to the outer periphery of the internal gear 36 via a key 42, and this operating ring 44 is supported so as to be rotatable within a predetermined range relative to the mounting portion of the case 45. Therefore, the internal gear 3 to which this operating ring 44 is fixed is
6 is also rotatable within a predetermined range with respect to the mounting portion of the case 45.

A regulating portion 46 is formed on the outer circumferential surface of the operating ring 44, and this regulating portion 46 regulates the rotation of the operating ring 44 within a predetermined range.
The regulating part 46 has a neutral position 47 with a deeper recess formed in the center position, and recesses shallower than the neutral position 47 on the left and right positions of the neutral position 47. operation positions 48 and 49 are formed.

The above-mentioned regulating portion 46 includes a ball 5 for regulating the position.
0 are arranged opposite to each other, and this ball 50 is pushed against the regulating portion 4 by a spring 51 interposed between adjustment screws 52.
6 side, and the biasing force is adjusted by adjusting the adjusting screw 52.

This biasing force is set to a force that can fix the internal gear 36 without rotating it with the ball 50 located at the neutral position 47 during normal opening and closing of the curtains 1 and 3.

Furthermore, an operating section 53 for performing a switch operation is formed on the outer peripheral surface of the operating ring 44 at a position opposite to the above-mentioned regulating section 46.
Operation cam surfaces 54 and 55 are formed corresponding to the aforementioned operation positions 48 and 49, and these operation cam surfaces 5
4 and 55 are provided with limit switches 56 and 57 opposite to each other.

And these limit switches 56 and 57 are
It is provided to cut off the power circuit of the reversible motor 24.

A stopper structure is formed on the circumferential surface of the aforementioned operating ring 44 to prevent the operating ring 44 from rotating more than necessary due to inertia, that is, a stopper structure consisting of a recess 58 and a stopper 59 inserted therein. The above-mentioned stopper 59 is connected to the case 45, and the stopper 59 abuts at both ends of the recess 58 to prevent the ball 50 from moving further outward from the operating positions 48 and 49 in the above-mentioned regulating portion 46. This is prevented.

FIG. 6 shows a drive circuit for the above-mentioned reversible motor 24 and the above-mentioned electromagnetic clutch 43.
4 and a coil 60 constituting the electromagnetic clutch 43 are connected in parallel, and each of these elements 24 and 60 is connected to a DC power source 62 by a forward/reverse switch 61.
are connected so as to be energized by switching the polarity, and the aforementioned limit switches 56, 57 are interposed on the forward circuit side and the reverse circuit side of each element 24, 60, respectively. are connected in parallel with diodes 63 and 64 for energizing only one polarity during forward and reverse rotation.

Then, the aforementioned changeover switch 61 is operated to turn off the power at the neutral position.

Next, the operation of the curtain opening/closing drive device configured as described above will be explained.

First, move the left curtain 1 in the direction of arrow a in FIG.
When the right curtain 3 is moved in the opposite direction of the arrow b in FIG. 1 to close the curtains 1 and 3, the reversible motor 24 is driven to rotate in the normal direction.

That is, by operating the changeover switch 61 to the forward side, the reversible motor 24 is driven in the forward rotation direction, and at the same time, by energizing the coil 60, the electromagnetic clutch 43 is turned on, and the upper stage planetary The internal gear 40 of the gear mechanism 27 is locked.

The internal gear 36 of the lower planetary gear mechanism 26 is locked because the ball 50 is in the neutral position 47 of the regulating portion 46 of the operating ring 44.

When the above-mentioned motor 24 rotates in the forward direction, its rotational force is transmitted to the output gear 28 via the upper and lower two-stage planetary gear mechanisms 26 and 27, and the input gear 29 of the differential gear mechanism 9 is constantly meshed with this gear 28. rotates, and the first drive pulley 1 is rotated through the differential gear mechanism 9.
1 and the second drive pulley 14 rotate counterclockwise in FIG. 1, the leading runner 7 provided on the first belt 5 runs to the left in FIG. 1, moving the right curtain 3 in the direction of the arrow. At the same time as moving in direction b,
A leading runner 8 provided on the belt 6 runs rightward in FIG. 1, moves the left curtain 1 in the direction of arrow a, and can close these curtains 1 and 3.

When the curtains 1 and 3 are closed as described above, the leading runners 7 and 8 come into contact and stop moving against each other, and this stopping load (reaction load) causes the pulley 1 to
1, 14, the differential gear mechanism 9 and the upper planetary gear mechanism 27 stop, and the rotation of the carrier 37 of the lower planetary gear mechanism 26 also stops.

As a result, the output of the output shaft 25 of the reversible motor 24 is applied from the sun gear 34 and planetary gear 35 of the lower stage planetary gear mechanism 26 to the internal gear 36, and this output becomes larger than the pressing force of the ball 50, so that the fifth As shown in the figure, by rotating the internal gear 36 and the operating ring 44 in the direction X (counterclockwise) opposite to that of the carrier 37,
The ball 50 deviates from the neutral position 47 and engages with the recess of the end-side operating position 48 and is biased to this position.

This rotation causes the operation cam surface 54 of the operation ring 44 to
However, the limit switch 56 is turned off, the normal rotation of the reversible motor 24 is stopped, and at the same time, the electromagnetic clutch 43 is turned off.

Note that the operating ring 44 and the internal gear 36 rotate due to inertia, and the ball 50 is moved to the operating position 4.
The stopper 59 prevents the vehicle from riding on the vehicle.

Moreover, the biasing engagement between the ball 50 and the recessed portion of the operating position 48 reliably maintains the off state of the reversible motor 24, thereby preventing the switch 56 from being turned on again due to unexpected vibrations.

Conversely, to open the curtains 1 and 3, operate the changeover switch 61 to the opposite side.
The reversible motor 2 operates in the opposite manner to the closing case described above.
4 is reversely driven, and the left and right curtains 1 and 3 can be opened in the same manner as described above.

At the beginning of the reversible rotation of the reversible motor 24 described above, as the reversible motor 24 reverses, the carrier 37 of the lower planetary gear mechanism 26 begins to rotate in the reverse direction Y, so that the internal gear 36 is engaged. At the same time as the load in the X direction is released, the movement resistance of the left and right curtains 1 and 3 and the torque load of the drive system act, causing the internal gear 36 to rotate in the direction Y, which is opposite to the rotation direction of the carrier 37. move.

With this rotation, the position regulating ball 50 is removed from the operating position 48 and fitted into the recess at the neutral position 47.
This operation ring 44 can be fixed with a predetermined urging force.

As a result, the internal gear 36 of the lower stage planetary gear mechanism 26 becomes in a locked state, allowing the planetary gear mechanism 26 to perform a reverse rotation output.

Furthermore, the left and right curtains 1 and 3 are opened,
When a stop load is received at the end of the movement, this stop load is applied to the internal gear 36 of the lower planetary gear mechanism 26 in the same manner as the curtain closing described above.
In addition, the internal gear 36 is rotated in the direction Y (clockwise) opposite to that of the carrier 37, and as a result of this rotation, the ball 50 engages with the recess at the operating position 49 and is biased to that position.

With this rotation, the operating cam surface 55 of the operating ring 44 turns off the limit switch 57, and the reversible motor 24 is stopped from reversing, and at the same time, the electromagnetic clutch 4
3 is turned off.

Next, the opening and closing of the other curtains 1 and 3 will be described.

For example, if you want to open or close only the other right curtain 3 by fixing the left curtain 1 in an open or closed state, or fixing it in a halfway position desired by the person in the room, first fix the left curtain 1 in the desired position. Later, when the reversible motor 24 is driven to rotate in either the forward or reverse direction, the second drive pulley 14 and the lower side gear 33 of the differential gear mechanism 9 maintain a stopped state due to the load caused by fixing the curtain. The rotational force from the first Only the drive pulley 11 rotates, and only the other right curtain 3 can be opened and closed.

Furthermore, when the above-mentioned reversible motor 24 is stopped,
In conjunction with this, the electromagnetic clutch 43 is turned off and the internal gear 40 in the upper planetary gear mechanism 27 is set to a free state, so that the left and right curtains 1 and 3 can be opened and closed manually. .

That is, when the left and right curtains 1 and 3 are simultaneously opened and closed, or when either one of the curtains is opened or closed, the rotational force is transmitted from the input gear 29 of the differential gear mechanism 9 to the output gear 28, and the rotational force is transmitted to the carrier 41 in the upper planetary gear mechanism 27. rotates, but internal gear 4
0 is in a free state, this internal gear 40 idles in the same direction as the rotational direction of the carrier 41. Therefore, under the above conditions, the left and right curtains 1 and 3 cannot be opened and closed manually. Moreover, since no rotational force is transmitted to the sun gear 38 or any of the elements on the driving side thereof, no rotational load is applied to the reversible motor 24.

According to the embodiment described above, the internal gear 36 of the lower planetary gear mechanism 26 used as a speed reduction mechanism is supported so as to be rotatable within a predetermined range, and the stop load that the left and right curtains 1 and 3 receive at their moving ends is reduced. The internal gear 36 is rotated by the reaction of It will be destroyed.

In the above-described embodiment, the operating ring 44 is fixed to the outer circumference of the internal gear 36, but the operating ring 44 may be configured directly to the internal gear.

Furthermore, if the operating ring 44 is provided in the first stage planetary gear mechanism 26 as in the embodiment, the reversible motor 24
Since the motor torque of the curtains 1 and 3 is small, the shock when the curtains 1 and 3 come into contact with a predetermined stopper and stop can be reduced, and the spring pressure of the spring 51 that biases the ball 50 for regulating the position can be reduced. can do.

However, the configuration position of the operating ring 44 is not limited to the embodiment. For example, when the planetary gear mechanism is provided in multiple stages, it can be provided on another internal gear.

Furthermore, although the above-described embodiments have been described with respect to curtains that can be pulled on both sides, the present invention can also be used for curtains that can be pulled on one side.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a system diagram showing a curtain opening/closing drive device, FIG. 2 is a perspective view of the main parts of the curtain opening/closing drive device, and FIG. 3 is a diagram showing a leading runner on one side. Sectional view showing the guide structure, No. 4
The figure is a sectional view showing the guide structure of the leading runner on the other side, FIG. 5 is a cross-sectional view of the lower planetary gear mechanism, and FIG.
The figure is a drive circuit diagram. 1, 3... Curtain, 10, 13... Output shaft,
11, 14... Drive pulley, 24... Reversible motor, 26... Planetary gear mechanism, 34... Sun gear,
35...planetary gear, 36...internal gear, 37...carrier, 44...operation ring,
46... Regulation part, 47... Neutral position, 48, 49
...Operating position, 54, 55...Operating cam surface, 5
6,57...Limit switch.

Claims (1)

[Scope of Claims] 1. A curtain opening/closing drive device comprising a drive pulley that drives the curtain to open and close, and a drive source that drives the drive pulley in forward and reverse directions, wherein between the drive pulley and the drive source, A planetary gear mechanism consisting of an internal gear, a carrier that pivotally supports a planetary gear meshing with the gear, and a sun gear meshing with the planetary gear, one of the carrier and sun gear being set as an input part and the other as an output part. is installed to support the internal gear of the planetary gear mechanism so as to rotate between the neutral position and each operating position in both forward and reverse rotation directions, and the internal gear is provided with a neutral position. In this case, a regulating part is formed that regulates the position of the internal gear with respect to the curtain opening/closing load, and regulates the position with a biasing force that releases the position regulation in response to the stop load at the opening/closing end of the curtain, and the output part of the planetary gear mechanism When a stop load is applied to the curtain at the moving end of the curtain and the internal gear rotates to the operating position of the regulating section, a switch is installed opposite the internal gear, which is operated by this rotation and controls the drive source to stop. Curtain opening/closing drive device.