JP6390422B2 - Driving device and opening / closing device for opening / closing body - Google Patents

Description

  The present invention relates to a driving device and an opening / closing device for an opening / closing body.

  2. Description of the Related Art Conventionally, as one of opening / closing devices for an opening / closing body, there is a sunroof device provided on an automobile roof (roof panel). Generally, a sunroof device is provided with a roof glass and a sunshade that can be opened and closed together. Then, by opening the sunshade with the roof glass closed, outside light can be taken into the vehicle. In addition, by opening the roof glass and the sunshade, outside air can be introduced into the vehicle along with outside light. Furthermore, the outside light and the outside air can be blocked by closing the roof glass and the sunshade. And in this kind of sunroof device, what opens and closes a roof glass and a sunshade with an electric motor is proposed (for example, refer to patent documents 1).

JP-A-5-4521

  By the way, in the above-mentioned sunroof apparatus, in order to open and close a glass panel and a sunshade, a separate drive device (motor) was used, respectively. That is, the sunroof device was equipped with two drive devices (motors). Therefore, the sunroof device has been increased in size and weight.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a driving device and an opening / closing device for an opening / closing body that can be reduced in size and weight.

  A drive device that solves the above-described problem is a motor body that drives a rotating shaft, and rotates with the rotation of the rotating shaft. When the rotating shaft rotates at a speed equal to or higher than a first rotation speed set in advance, A first centrifugal clutch that transmits a driving force to the worm shaft and stops the transmission of the driving force to the first worm shaft when the rotating shaft rotates at a speed less than the first rotational speed; When the rotation shaft rotates at a speed less than a second rotation speed set in advance, a driving force is transmitted to the second worm shaft, and the rotation shaft rotates at a speed higher than the second rotation speed. Then, a second centrifugal clutch that stops transmission of the driving force to the second worm shaft, a first worm wheel that meshes with the first worm shaft and constitutes the first worm shaft and the first worm speed reduction mechanism, Meshed with the second worm shaft, the second And a second worm wheel which constitute the Omu shaft and the second worm speed reduction mechanism.

  According to this configuration, when the rotation shaft of the motor main body is rotated at a speed equal to or higher than the first rotation speed, the driving force is transmitted to the first worm shaft, the first worm wheel is rotationally driven, and the rotation shaft is the second rotation shaft. When the rotation speed is less than the rotation speed, the driving force is transmitted to the second worm shaft, and the second worm wheel is rotationally driven. Therefore, by changing the rotation speed (speed) of the rotating shaft, it is possible to select and rotate the first worm wheel and the second worm wheel with a single motor body. Therefore, it is possible to reduce the size and weight of the drive device that drives the two objects. Moreover, since the first and second centrifugal clutches are provided at the front stage of the first and second worm speed reduction mechanisms, the centrifugal force is easily increased as compared with those provided at the rear stage of the first and second worm speed reduction mechanisms. For example, the first and second centrifugal clutches can be reduced in size and weight, and the drive device can be set easily. That is, since the centrifugal clutch uses a centrifugal force having a magnitude proportional to the square of the rotational speed, if the centrifugal clutch is provided in the subsequent stage of the worm speed reduction mechanism, for example, the weight is increased or the rotational speed (speed) after the deceleration is increased. ) Needs to be set relatively large. On the other hand, it is possible to reduce the size and weight, and the rotational speed after deceleration can be freely set to a small value according to the intended use.

In the driving apparatus, it is preferable that the second rotation speed is set to a value larger than the first rotation speed.
According to this configuration, when the rotation shaft is rotated at a speed equal to or higher than the second rotation speed, the driving force is transmitted to the first worm shaft, and the first worm wheel is rotationally driven. Further, when the rotation shaft is rotated at a speed less than the second rotation speed and higher than the first rotation speed, the driving force is transmitted to the first and second worm shafts, and the first and second worm wheels are rotated. The When the rotation shaft is rotated at a speed less than the first rotation speed, a driving force is transmitted to the second worm shaft, and the second worm wheel is rotationally driven. That is, by changing the rotation speed (speed) of the rotation shaft, only the first worm wheel is driven to rotate, both the first and second worm wheels are driven to rotate, or only the second worm wheel is driven to rotate. Can be selected.

  In the above drive device, the first centrifugal clutch rotates about a first drive shaft that rotates with the rotation of the rotation shaft and an axis of the first drive shaft with the rotation of the first drive shaft. The first worm shaft is connected to the first worm shaft at a radially outer connecting position so as to transmit a driving force to the first worm shaft, and the first worm shaft is connected to the first worm shaft at a radially unconnected position. A first actuating body that is disconnected from the worm shaft; and a first elastic member that urges the first actuating body radially inward, wherein the second centrifugal clutch is rotated along with the rotation of the rotating shaft. A second drive shaft that rotates in rotation, and pivots about the axis of the second drive shaft as the second drive shaft rotates, and is movably provided in the radial direction. Driven to the second worm shaft and connected to the second worm shaft. Preferably has a second operating member in the non-coupling position of the radially outer becomes the second worm shaft and unconsolidated, and a second elastic member that urges the second actuating member radially inward.

According to the same structure, the said effect can be specifically acquired because a 1st and 2nd operation body moves to radial direction outer side with a centrifugal force.
In the above drive device, it is preferable that the first and second worm shafts are provided along the rotation shaft.

According to this configuration, the first and second worm shafts are provided along the rotation axis (that is, on the same straight line as or parallel to the rotation shaft), so that power transmission is facilitated.
In the above drive device, it is preferable that the first and second worm shafts are provided at both ends of the rotating shaft via the first and second centrifugal clutches and are collinear with the rotating shaft.

  According to this configuration, the first and second worm shafts are provided at both ends of the rotating shaft via the first and second centrifugal clutches, and are provided on the same straight line as the rotating shaft, so that they are orthogonal to the rotating shaft. Increase in direction can be suppressed. Further, a power transmission mechanism such as a gear is not required between the rotating shaft and the first and second centrifugal clutches.

  In the above drive device, the first and second worm shafts are arranged side by side so as to extend in the same direction and extend in parallel from one end side of the rotating shaft, and one of the first and second worm shafts is the other. It is preferable that the outer circumference of the first or second worm wheel that extends longer and meshes with the tip end side thereof is provided so as to exceed the extension line of the other first or second worm shaft when viewed from the axial direction.

  According to this configuration, one of the first and second worm shafts extends longer than the other, and the outer periphery of the first or second worm wheel meshed with the tip side thereof is the other one when viewed from the axial direction. Since it is provided so as to exceed the extension line of the first or second worm shaft, the width of the first and second worm shafts in the juxtaposed direction can be suppressed. That is, if the first and second worm shafts and the first and second worm wheels are all arranged without overlapping in the juxtaposed direction, the width in the juxtaposed direction becomes large. Then, since it becomes the structure which overlaps in a juxtaposed direction, the width | variety of the juxtaposed direction can be suppressed.

In the above drive device, it is preferable that the first and second worm shafts are arranged in parallel so as to be parallel to the rotation shaft and sandwich the motor body.
According to this configuration, the first and second worm shafts are arranged in parallel so as to be parallel to the rotation shaft and sandwich the motor main body, and therefore the first and second worm shafts are arranged in the parallel arrangement direction (a direction orthogonal to the axis of the rotation shaft) And the 2nd worm axis | shaft, the 1st and 2nd worm wheel, and the motor main body can all be arranged, and the width | variety along the axial direction of a rotating shaft can be suppressed.

In the above drive device, it is preferable that at least one of the first and second elastic members is provided with an auxiliary member that restricts displacement in a direction orthogonal to the extending and contracting direction.
According to this configuration, since at least one of the first and second elastic members is provided with the auxiliary member that restricts the displacement in the direction perpendicular to the direction of expansion and contraction, the displacement in the direction orthogonal to the direction of expansion and contraction is provided. Be regulated. Thereby, for example, when a compression coil spring is used as the first and second elastic members, the buckling can be prevented. In addition, it is possible to improve the assemblability.

  An opening / closing device for an opening / closing body that solves the above problems includes the above-described driving device, and a first output shaft is connected to the first worm wheel, and the first output shaft is connected to the first output shaft via a first power transmission cable. A first opening / closing body is connected, a second output shaft is connected to the second worm wheel, and a second opening / closing body is connected to the second output shaft via a second power transmission cable. preferable.

According to this configuration, the above-described effects can be obtained in the opening / closing device for the opening / closing body that opens and closes the first and second opening / closing bodies.
In the opening / closing device for the opening / closing body, the first opening / closing body is one of a roof glass and a sunshade provided in the vehicle, and the second opening / closing body is the other of the roof glass and the sunshade provided in the vehicle, The first and second output shafts are preferably arranged so as to be separated from each other in the vehicle front-rear direction.

  According to this configuration, the first and second output shafts are disposed so as to be separated from each other in the vehicle front-rear direction, so that the first and second power transmission cables are disposed along the vehicle width direction without bending. Is possible. Therefore, for example, loss of power transmission force or lengthening due to bending of the first and second power transmission cables can be suppressed.

  According to the drive device and the opening / closing device for the opening / closing body of the present invention, it is possible to reduce the size and weight.

1 is a partial perspective view of a vehicle equipped with a sunroof device according to an embodiment. The schematic diagram of the drive device in one Embodiment. (A), (b) is a partial cross section figure for demonstrating the 1st centrifugal clutch in one Embodiment. The top view for demonstrating the 1st and 2nd cover in one Embodiment. Sectional drawing along the AA line of FIG. (A), (b) is a partial cross section figure for demonstrating the 2nd centrifugal clutch in one Embodiment. The schematic diagram of the drive device in another example. The schematic diagram of the drive device in another example. The schematic diagram of the drive device in another example. The top view for demonstrating the 1st and 2nd cover in another example. The top view for demonstrating the leaf | plate spring and the 1st and 2nd cover in another example. The side view for demonstrating the 1st and 2nd cover in another example. Sectional drawing along the BB line of FIG. Explanatory drawing for demonstrating the 1st and 2nd cover in another example, and its assembly | attachment state. The top view for demonstrating the leaf | plate spring and the 1st and 2nd cover in another example. The side view for demonstrating the 1st and 2nd cover in another example. Sectional drawing along CC line of FIG. Explanatory drawing for demonstrating the 1st and 2nd cover in another example, and its assembly | attachment state. The top view for demonstrating the tension coil spring and the 1st and 2nd cover in another example. Sectional drawing along the DD line | wire of FIG. Sectional drawing for demonstrating the state which the tension | pulling coil spring in another example extended.

Hereinafter, an embodiment of an opening / closing device for an opening / closing body embodied in a vehicle sunroof device will be described.
As shown in FIG. 1, a rectangular roof opening 2a is formed in a roof panel 2 of a vehicle 1 equipped with a vehicle sunroof device. A roof glass 3 as a transparent first opening / closing body is disposed in the rectangular roof opening 2a. The roof glass 3 is provided so as to be capable of reciprocating sliding movement (sliding opening / closing operation) in the longitudinal direction of the vehicle.

  In addition, a sunshade 4 as a second opening / closing body made of a light-shielding synthetic resin plate is disposed below the roof glass 3 (inside the vehicle), which is the rectangular roof opening 2a. Similar to the roof glass 3, the sunshade 4 is provided so as to be reciprocally slidable in the vehicle front-rear direction.

  Then, when the roof glass 3 and the sunshade 4 are slid rearward of the vehicle and opened together with respect to the roof opening 2a, outside air and outside light can be introduced into the vehicle. Further, when the roof glass 3 is slid forward in the vehicle and closed with respect to the roof opening 2a, and the sunshade 4 is slid backward in the vehicle and opened with respect to the roof opening 2a, the outside air is discharged. It can be blocked and external light can be introduced into the vehicle. Furthermore, when the roof glass 3 and the sunshade 4 are slid forward in the vehicle and closed together with the roof opening 2a, the introduction of outside air and outside light into the vehicle can be blocked.

  As shown in FIG. 1, between the vehicle front end of the roof panel 2 and the vehicle front end of the roof opening 2a, between the roof panel 2 and the interior ceiling panel (not shown). Is provided with a driving device M. The drive device M is a drive source that reciprocally slides (opens and closes) the roof glass 3 in the vehicle front-rear direction and moves the sunshade 4 back and forth in the vehicle front-rear direction.

As shown in FIG. 2, the driving device M includes a motor body 5 and a speed reduction / clutch portion 6 fixed to the motor body 5.
The motor body 5 is a direct current motor, and includes a motor case 5a and a rotating shaft 7 having one end protruding from the motor case 5a, and rotationally drives the rotating shaft 7.

  The speed reduction / clutch unit 6 includes a case 8, a transmission gear 9, a control board 10, a first centrifugal clutch 11, a first worm shaft 12 and a first worm wheel 13 constituting a first worm reduction mechanism, 1 output shaft 14, the 2nd centrifugal clutch 21, the 2nd worm shaft 22 and the 2nd worm wheel 23 which comprise the 2nd worm reduction mechanism, and the 2nd output shaft 24 are provided.

  The case 8 is fixed to the motor case 5a so as to accommodate one end of the protruding rotating shaft 7. In the case 8, a transmission gear 9 made of a spur gear is fixed to one end of the rotary shaft 7, and the first and second centrifugal clutches 11, 21 are engaged with the transmission gear 9 (at a position separated by 180 °). Has been.

  The first centrifugal clutch 11 rotates with the rotation of the rotating shaft 7 (transmission gear 9), and when the rotating shaft 7 rotates at a speed equal to or higher than a first rotation speed set in advance, a driving force is applied to the first worm shaft 12. When the rotary shaft 7 rotates at a speed lower than the first rotational speed, the transmission of the driving force to the first worm shaft 12 is stopped (the driving force is not transmitted).

  Specifically, as shown in FIGS. 3A and 3B, the first centrifugal clutch 11 is provided with teeth 15 a meshed with the transmission gear 9 on the outer periphery, and the rotary shaft 7 (transmission gear 9). ), The first drive shaft 15 is rotated. A shaft support portion 15b into which the proximal end side of the first worm shaft 12 is fitted is formed at the center of the first drive shaft 15, and the first worm is disposed on the outer peripheral side of the first drive shaft 15 (inside the teeth 15a). An annular recess 15c is formed which is provided on the shaft 12 and accommodates a pair of first worm connecting portions 12a which rotate integrally with the first worm shaft 12. The annular recess 15 c accommodates the first worm coupling portion 12 a while allowing the first worm coupling portion 12 a to pivot about the axis of the first drive shaft 15. Further, the first drive shaft 15 is formed with a pair of first operating body accommodating portions 15d. The first working body housing portion 15d is provided with a first working body that pivots about the axis of the first drive shaft 15 as the first drive shaft 15 rotates and is movable in the radial direction. 16 is accommodated and held. The first operating body 16 has a first connecting portion 16a that protrudes radially outward, and the first connecting portion 16a is drivingly connected to the first worm connecting portion 12a at the radially outer connecting position (circumferential direction). The driving force is transmitted to the first worm shaft 12 and is not connected to the first worm shaft 12 at the radially non-connected position, and the driving force is not transmitted to the first worm shaft 12. A slit 16b extending in the radial direction is formed in the first operating body 16, and a support convex portion 15e provided on the first drive shaft 15 is disposed in the slit 16b. And the 1st compression coil spring 17 as a 1st elastic member which urges | biases the 1st action | operation body 16 to radial inside is arrange | positioned at the radial inside of the support convex part 15e in the slit 16b.

  As shown in FIGS. 4 and 5, the first compression coil spring 17 of the present embodiment is provided with first and second covers 31 and 32 as auxiliary members that restrict displacement in the direction perpendicular to the extending and contracting direction. It has been. Specifically, first, the first cover 31 is formed in a bottomed rectangular tube shape, and a columnar support column 31a (see FIG. 5) is formed on the bottom thereof. Further, a claw portion 31b protruding outward is formed on the outer side surface of the pair of side walls of the first cover 31 on the opening side. The second cover 32 is formed in a bottomed rectangular tube shape, and a columnar support column 32a (see FIG. 5) is formed on the bottom thereof. The second cover 32 is formed in a size that allows the cylindrical portion to fit the cylindrical portion of the first cover 31, and a long hole 32 b is formed at a position corresponding to the claw portions 31 b of a pair of opposing side walls. Has been. The first cover 31 is fitted into the second cover 32, and the claw portion 31b is accommodated in the long hole 32b, so that the claw portion 31b can move within the long hole 32b. The second cover 32 is prevented from coming off from the second cover 32 and is allowed to move in and out of the second cover 32. The first compression coil spring 17 is housed in a compressed state inside the first cover 31 and the second cover 32 while both ends are externally fitted to the support columns 31a and 32a. Further, a convex portion 32c is formed on a pair of side walls of the second cover 32 in the present embodiment where the elongated hole 32b is not formed, and a concave portion in which the convex portion 32c is fitted in the slit 16b of the first operating body 16. 16c is formed.

  The first and second covers 31 and 32 accommodating the first compression coil spring 17 are slit so that the convex portion 32c is fitted in the concave portion 16c and the bottom portion of the first cover 31 is in contact with the supporting convex portion 15e. 16b.

  As a result, when the rotating shaft 7 rotates at a speed equal to or higher than the first rotational speed, the first centrifugal clutch 11 causes the first operating body 16 to be moved by the centrifugal force to the first compression coil spring as shown in FIG. The first connecting portion 16a is driven and connected to the first worm connecting portion 12a (engaged in the circumferential direction) to the first worm shaft 12 by moving to the radially outer connecting position against the urging force of 17. Transmits driving force.

  Further, when the rotary shaft 7 rotates at a speed less than the first rotational speed, the first centrifugal body 11 causes the first operating body 16 to urge the first compression coil spring 17 as shown in FIG. As a result, the first connecting portion 16a is disconnected from the first worm connecting portion 12a (not engaged in the circumferential direction), and the driving force is not transmitted to the first worm shaft 12.

  As shown in FIG. 2, a first worm wheel 13 is engaged with the first worm shaft 12, and a first output shaft 14 rotates integrally with the first worm wheel 13. So that it is fixed.

  The second centrifugal clutch 21 rotates with the rotation of the rotating shaft 7 (transmission gear 9), and when the rotating shaft 7 rotates at a speed less than a preset second rotational speed, a driving force is applied to the second worm shaft 22. When the rotary shaft 7 rotates at a speed equal to or higher than the second rotational speed, the transmission of the driving force to the second worm shaft 22 is stopped (the driving force is not transmitted).

  Specifically, as shown in FIGS. 6A and 6B, the second centrifugal clutch 21 is provided with teeth 25a meshing with the transmission gear 9 on the outer periphery, and the rotary shaft 7 (transmission gear 9). ) Has a second drive shaft 25 that rotates with rotation. A shaft support portion 25b into which the proximal end side of the second worm shaft 22 is fitted is formed at the center of the second drive shaft 25, and the second worm shaft 22 is provided around the shaft support portion 25b of the second drive shaft 25. An annular recess 25c is formed which accommodates a pair of second worm connecting portions 22a which are provided in the housing and rotate integrally with the second worm shaft 22. The annular recess 25c accommodates the second worm coupling portion 22a while allowing the second worm coupling portion 22a to pivot about the axis of the second drive shaft 25. Further, the second drive shaft 25 is formed with a pair of second operating body accommodation portions 25d. The second actuating body receiving portion 25d is provided with a second actuating body that pivots about the axis of the second drive shaft 25 as the second drive shaft 25 rotates and is movable in the radial direction. 26 is accommodated and held. The second operating body 26 has a second connecting portion 26a protruding radially inward, and the second connecting portion 26a is drivingly connected to the second worm connecting portion 22a at the radially inner connecting position (circumferential direction). The driving force is transmitted to the second worm shaft 22, and is not connected to the second worm shaft 22 at the non-connected position on the radially outer side, so that the driving force is not transmitted to the second worm shaft 22. In addition, a slit 26b extending in the radial direction is formed in the second operating body 26, and a support convex portion 25e provided on the second drive shaft 25 is disposed in the slit 26b. A second compression coil spring 27 as a second elastic member that urges the second operating body 26 radially inward is disposed inside the slit 26b in the radial direction of the support convex portion 25e.

  As shown in FIGS. 4 and 5, the second compression coil spring 27 of the present embodiment has the first and second covers 31 and 32 as auxiliary members that restrict displacement in a direction orthogonal to the extending and contracting direction. Is provided. Since the first and second covers 31 and 32 are the same as those provided in the first compression coil spring 17, the same reference numerals are given and detailed descriptions thereof are omitted.

The slit 26b in the second operating body 26 is formed with a concave portion 26c into which the convex portion 32c of the second cover 32 is fitted.
The first and second covers 31 and 32 that accommodate the second compression coil spring 27 are slit so that the convex portion 32c is fitted in the concave portion 26c and the bottom portion of the first cover 31 is in contact with the support convex portion 25e. 26b.

  As a result, when the rotation shaft 7 rotates at a speed equal to or higher than the second rotational speed, the second centrifugal clutch 21 causes the second operating body 26 to move to the second compression coil spring by centrifugal force as shown in FIG. The second connecting portion 26a is disengaged (disengaged in the circumferential direction) from the second worm connecting portion 22a by moving to a radially unconnected position against the urging force of 27, and is driven to the second worm shaft 22. Does not transmit power.

  Further, when the rotary shaft 7 rotates at a speed less than the second rotational speed, the second operating body 26 causes the second operating body 26 to bias the second compression coil spring 27 as shown in FIG. Accordingly, the second connecting portion 26a is drivingly connected to the second worm connecting portion 22a (engaged in the circumferential direction) to transmit the driving force to the second worm shaft 22.

  As shown in FIG. 2, a second worm wheel 23 is engaged with the second worm shaft 22, and a second output shaft 24 rotates integrally with the second worm wheel 23. So that it is fixed.

  In the present embodiment, the first and second worm shafts 12 and 22 are provided along the rotation shaft 7. Specifically, the first and second worm shafts 12 and 22 are arranged in parallel so as to extend in the same direction from one end side of the rotation shaft 7 and to extend in parallel. Has been. The second worm shaft 22 extends longer than the first worm shaft 12, and the outer periphery of the second worm wheel 23 engaged with the tip end side thereof exceeds the extension line of the first worm shaft 12 when viewed from the axial direction. It is provided as follows.

In the present embodiment, the second rotational speed is set to a value larger than the first rotational speed.
In the case 8, a control board 10 for PWM control of the motor body 5 is accommodated and held.

  And the drive device M comprised as mentioned above is arrange | positioned so that the juxtaposition direction (up-down direction in FIG. 2) of the 1st and 2nd worm shafts 12 and 22 corresponds with the vehicle front-back direction, and this state Thus, the first and second output shafts 14 and 24 are disposed so as to be separated from each other in the vehicle front-rear direction.

  The roof glass 3 (see FIG. 1) is connected to the first output shaft 14 via a pair of first power transmission cables 41, and the pair of second power transmission cables 42 is connected to the second output shaft 24. The sunshade 4 (see FIG. 4) is connected through the vias. In other words, a pair of first power transmission cables 41 are connected to the roof glass 3, and the first power transmission cables 41 are arranged so as to sandwich the first output shaft 14 from the vehicle front-rear direction and the first. It is engaged with the outer periphery of the output shaft 14 and connected so that the power of the first output shaft 14 is transmitted. The sunshade 4 is connected to a pair of second power transmission cables 42. The second power transmission cables 42 are arranged so as to sandwich the second output shaft 24 from the front-rear direction of the vehicle and the second output shaft. It is engaged with the outer periphery of 24 and is connected so that the power of the second output shaft 24 is transmitted. A total of four first and second power transmission cables 41 and 42 are arranged along the vehicle width direction (left and right direction in FIG. 2) without being bent.

Next, the operation of the vehicle sunroof device configured as described above will be described.
For example, when an operation switch (not shown) is operated to open and close only the roof glass 3, a control signal to that effect is input to the control board 10, and the motor body 5 is driven at a high speed by the control board 10 to rotate the rotating shaft. 7 rotates at a speed equal to or higher than the second rotational speed set to a value larger than the first rotational speed. Then, as shown in FIG. 3B, in the first centrifugal clutch 11, the first operating body 16 moves to the radially outer connecting position against the urging force of the first compression coil spring 17 by centrifugal force. Thus, the first connecting portion 16a is drivingly connected to the first worm connecting portion 12a (engaged in the circumferential direction), and the driving force is transmitted to the first worm shaft 12. Accordingly, the first worm wheel 13 and the first output shaft 14 rotate, power is transmitted to the roof glass 3 via the first power transmission cable 41, and the roof glass 3 is opened and closed. Further, at this time, as shown in FIG. 6B, the second centrifugal clutch 21 is disconnected from the radially outer side by the second operating body 26 against the urging force of the second compression coil spring 27 by centrifugal force. The second connecting portion 26a is moved to the position so as not to be connected (disengaged in the circumferential direction) with the second worm connecting portion 22a, and the driving force is not transmitted to the second worm shaft 22 and thus the sunshade 4. Therefore, only the roof glass 3 is opened / closed.

  For example, when an operation switch (not shown) is operated to open and close only the sunshade 4, a control signal to that effect is input to the control board 10, and the motor body 5 is driven at a low speed by the control board 10 to rotate. The shaft 7 rotates at a speed less than the first rotational speed. Then, as shown in FIG. 3A, the first centrifugal clutch 11 is moved to the radially inner non-connected position by the urging force of the first compression coil spring 17, and the first connecting portion 16 a is not connected to the first worm connecting portion 12 a (not engaged in the circumferential direction), and the driving force is not transmitted to the first worm shaft 12 and the roof glass 3. At this time, as shown in FIG. 6A, the second centrifugal clutch 21 is moved to the radially inner connecting position by the urging force of the second compression coil spring 27. The connecting portion 26 a is drivingly connected to the second worm connecting portion 22 a (engaged in the circumferential direction), and the driving force is transmitted to the second worm shaft 22. Accordingly, the second worm wheel 23 and the second output shaft 24 rotate, the power is transmitted to the sunshade 4 via the second power transmission cable 42, and only the sunshade 4 is opened / closed.

  For example, when an operation switch (not shown) is operated to open and close the roof glass 3 and the sunshade 4, a control signal to that effect is input to the control board 10, and the motor board 5 is driven at a medium speed by the control board 10. When driven, the rotation shaft 7 rotates at a speed less than the second rotation speed and greater than or equal to the first rotation speed. Then, as shown in FIG. 3B, in the first centrifugal clutch 11, the first operating body 16 moves to the radially outer connecting position against the urging force of the first compression coil spring 17 by centrifugal force. Thus, the first connecting portion 16a is drivingly connected to the first worm connecting portion 12a (engaged in the circumferential direction), and the driving force is transmitted to the first worm shaft 12. Accordingly, the first worm wheel 13 and the first output shaft 14 rotate, power is transmitted to the roof glass 3 via the first power transmission cable 41, and the roof glass 3 is opened and closed. At this time, as shown in FIG. 6A, the second centrifugal clutch 21 is moved to the radially inner connecting position by the urging force of the second compression coil spring 27. The connecting portion 26 a is drivingly connected to the second worm connecting portion 22 a (engaged in the circumferential direction), and the driving force is transmitted to the second worm shaft 22. Accordingly, the second worm wheel 23 and the second output shaft 24 rotate, power is transmitted to the sunshade 4 via the second power transmission cable 42, and the sunshade 4 is opened and closed. Accordingly, the roof glass 3 and the sunshade 4 are opened and closed simultaneously.

Next, the characteristic effects of the above embodiment will be described below.
(1) The first worm wheel 13 and the second worm wheel 23 can be selected and rotated by the single motor body 5 by changing the rotation speed (speed) of the rotating shaft 7. Therefore, it is possible to reduce the size and weight of the driving device M that drives the two objects (the roof glass 3 and the sunshade 4). In addition, since the first and second centrifugal clutches 11 and 21 are provided at the front stage of the first and second worm speed reduction mechanisms, the first and second centrifugal clutches 11 and 21 are before the speed reduction compared to those provided at the rear stage of the first and second worm speed reduction mechanisms. A large centrifugal force can be easily used by using the high rotation speed of the first and second centrifugal clutches 11 and 21, for example, and the drive device M can be easily set. . That is, since the centrifugal clutch uses a centrifugal force having a magnitude proportional to the square of the rotational speed, if the centrifugal clutch is provided in the subsequent stage of the worm speed reduction mechanism, for example, the weight is increased or the rotational speed (speed) after the deceleration is increased. ) Needs to be set relatively large. On the other hand, it is possible to reduce the size and weight, and the rotational speed after deceleration can be freely set to a small value according to the intended use. Therefore, in this embodiment, for example, the opening / closing operation of the roof glass 3 and the sunshade 4 can be set sufficiently late while ensuring the stable operation of the first and second centrifugal clutches 11 and 21.

  (2) Since the second rotational speed is set to a value larger than the first rotational speed, only the first worm wheel 13 is rotationally driven by changing the rotational speed (speed) of the rotating shaft 7. Alternatively, it is possible to select whether the first and second worm wheels 13 and 23 are rotationally driven or only the second worm wheel 23 is rotationally driven. Therefore, it is possible to select whether only the roof glass 3 is opened / closed, whether the roof glass 3 and the sunshade 4 are opened / closed simultaneously, or only the sunshade 4 is opened / closed.

  (3) Since the first and second worm shafts 12 and 22 are provided along the rotating shaft 7, power transmission is facilitated. For example, as in the present embodiment, the power transmission mechanism from the rotary shaft 7 to the first and second centrifugal clutches 11 and 21 can be a simple one such as a transmission gear 9 made of a spur gear.

  (4) The second worm shaft 22 extends longer than the first worm shaft 12, and the outer periphery of the second worm wheel 23 meshed with the tip end side thereof exceeds the extension line of the first worm shaft 12 when viewed from the axial direction. Therefore, the width of the first and second worm shafts 12 and 22 in the juxtaposed direction (vehicle longitudinal direction) can be suppressed. That is, if the first and second worm shafts 12 and 22 and the first and second worm wheels 13 and 23 are all arranged in the juxtaposed direction without overlapping, the width in the juxtaposed direction becomes large. However, in the above-described configuration, the width in the side-by-side direction can be reduced because the configuration partially overlaps in the side-by-side direction.

  (5) The first and second compression coil springs 17 and 27 are provided with the first and second covers 31 and 32 for restricting the displacement in the direction orthogonal to the direction of expansion and contraction. Displacement is regulated. Thereby, for example, buckling of the first and second compression coil springs 17 and 27 can be prevented. In addition, it is possible to improve the assemblability. In addition, the first and second covers 31 and 32 of the present embodiment are held by the long holes 32b and the claw portions 31b so as not to be disassembled in the assembled state. Can be improved.

  (6) Since the first and second output shafts 14 and 24 are arranged so as to be separated from each other in the vehicle front-rear direction, they are arranged along the vehicle width direction without bending the first and second power transmission cables 41 and 42. Can be installed. Therefore, for example, loss of power transmission force due to bending of the first and second power transmission cables 41 and 42, an increase in length, and the like can be suppressed.

The above embodiment may be modified as follows.
-Arrangement | positioning of the 1st and 2nd centrifugal clutches 11 and 21 of the said embodiment, the 1st and 2nd worm shafts 12 and 22, and the 1st and 2nd worm wheels 13 and 23 may be changed.

  For example, it may be changed as shown in FIG. That is, in this example (see FIG. 7), the first and second worm shafts 12 and 22 are arranged in parallel so as to be parallel to the rotating shaft 7 and sandwich the motor body 5. The first and second worm wheels 13 and 23 are arranged outside the first and second worm shafts 12 and 22 in the side-by-side direction (the horizontal direction in FIG. 7 and the vehicle width direction). And this drive device M is arrange | positioned so that the axial direction of the rotating shaft 7 may correspond with the vehicle front-back direction. In this example, since the first and second output shafts 14 and 24 are arranged at the same position in the vehicle front-rear direction, the first and second power transmission cables 41 and 42 are bent with respect to the vehicle width direction to The first and second output shafts 14 and 24 need to be engaged.

  If it does in this way, the 1st and 2nd worm shafts 12 and 22 and the 1st and 2nd worm shafts 12 and 22 and the 1st worm shafts 12 and 22 and the 1st worm shafts 12 and 22 and the 1st worm shafts 12 and 22 and 1st In addition, the second worm wheels 13 and 23 and the motor main body 5 can all be arranged side by side, and the width along the axial direction of the rotating shaft 7 (vehicle longitudinal direction) can be kept small.

  Further, for example, as shown in FIG. 8, the driving device M of the above-described another example (see FIG. 7) is arranged so that the first and second output shafts 14 and 24 are separated (tilted) in the vehicle front-rear direction. May be. If it does in this way, it will become possible to arrange | position along the vehicle width direction, without bending the 1st and 2nd power transmission cables 41 and 42. FIG.

  Further, for example, it may be changed as shown in FIG. That is, in this example (see FIG. 9), the first and second worm shafts 12 and 22 are provided at both ends of the rotating shaft 7 via the first and second centrifugal clutches 11 and 21, and the rotating shaft 7 and It is provided on the same straight line. Moreover, the 1st and 2nd worm wheels 13 and 23 are arrange | positioned in the same position of the vehicle front-back direction.

  If it does in this way, the enlargement of the direction (vehicle front-back direction) orthogonal to the rotating shaft 7 can be suppressed. Further, a power transmission mechanism such as a gear (transmission gear 9) is not required between the rotary shaft 7 and the first and second centrifugal clutches 11 and 21.

Of course, the shape of the control board 10 may be changed as appropriate, for example, as shown in FIGS.
In the above-described embodiment and another example (see FIGS. 7 and 8), the number of teeth of the transmission gear 9 and the teeth 15a and 25a of the first and second centrifugal clutches 11 and 21 are the same although not specifically mentioned. Or a difference. For example, by increasing the number of teeth of the transmission gear 9 and making a difference, a larger centrifugal force can be used. For example, the first and second centrifugal clutches 11 and 21 can be further reduced in size and weight. It becomes possible.

  -The 1st and 2nd covers 31 and 32 of the said embodiment are good also as the 1st and 2nd covers 33 and 34 of simple bottomed square cylinder shape, as shown in FIG. In this example (see FIG. 10), it cannot be held so as not to be disassembled in the assembled state, but the first and second compression coil springs 17 and 27 are orthogonal to the extending and contracting direction while simplifying the configuration. Directional displacement can be regulated.

  Moreover, in the said embodiment, although the 1st and 2nd compression coil springs 17 and 27 were used, you may change to the leaf | plate spring 35, as shown in FIGS. In this example, the first and second compression coil springs 17 and 27 are changed to a pair of leaf springs 35. The first and second covers 31 and 32 are changed in size from the above-described embodiment (see FIGS. 4 and 5) to accommodate the pair of leaf springs 35, but have the same function as the above-described embodiment. Constituent elements having the same symbols are given the same descriptions, and explanations thereof are omitted.

  Further, as shown in FIGS. 14 to 17, first and second covers 31 and 32 whose sizes are changed to accommodate one leaf spring 35 of the above-described another example (see FIGS. 11 to 13) are assembled. For example, two members may be provided for each of the second operating bodies 26. That is, in this example, two slits 26 b are formed in one second operating body 26. Of course, the support protrusion 25e is formed at a position corresponding to each slit 26b. And the 1st and 2nd covers 31 and 32 which accommodated one leaf | plate spring 35 are accommodated in the slit 26b similarly to the said embodiment.

  In the above embodiment, the first and second compression coil springs 17 and 27 are used. However, as shown in FIGS. 18 to 21, the first and second compression coil springs 17 and 27 are pulled by the tension coil spring 36. You may change to Specifically, in this example, as shown in FIG. 20, both ends of the tension coil spring 36 are accommodated in the first cover 31 and the second cover 32 while being fixed to the support columns 31a and 32a. On the other hand, as shown in FIG. 18, the concave portion 26c of the slit 26b is formed on the radially outer side of the slit 26b, and the support convex portion 25e is disposed on the radially inner side of the concave portion 26c in the slit 26b. The first and second covers 31, 32 that house the tension coil spring 36 are slit so that the convex portion 32c is fitted into the concave portion 26c and the bottom portion of the first cover 31 is fixed to the support convex portion 25e. 26b. Therefore, in this example, the tension coil spring 36 acts to pull the second operating body 26 radially inward, and when a centrifugal force is applied as in the above embodiment, as shown in FIG. 36 is set to extend so that the second operating body 26 moves to the unconnected position. In this configuration, since the tension coil spring 36 is used, the buckling does not occur originally, but the assembling property can be improved.

  Moreover, in the said embodiment and another example, although the auxiliary member which consists of the 1st and 2nd cover 31 and 32 was provided in the 1st and 2nd compression coil springs 17 and 27, the displacement of the orthogonal direction of the direction to expand / contract is carried out. The auxiliary member may be changed to another auxiliary member to be regulated, or the first and second elastic members (first and second compression coil springs 17, 27, etc.) may be directly assembled without providing the auxiliary member.

  In the above embodiment, the second rotational speed is set to a value larger than the first rotational speed. However, the present invention is not limited to this, and the second rotational speed is set to be less than the first rotational speed. May be. In this way, the roof glass 3 and the sun shade 4 cannot be opened / closed simultaneously, but the roof glass 3 is opened / closed or the sun shade 4 is opened / closed by changing the rotation speed (speed) of the rotary shaft 7. You can choose to activate.

  In the above embodiment and another example, the first and second worm shafts 12 and 22 are configured to be provided along the rotation shaft 7 (in parallel or on the same straight line), but are not limited thereto. You may provide along the direction which has an angle with the rotating shaft 7. FIG.

  In the above-described embodiment, the opening / closing device of the opening / closing body including the driving device M is embodied as a vehicle sunroof device. However, the driving device M is used for an opening / closing device of another opening / closing body or a device other than the opening / closing device. May be.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 3 ... Roof glass (1st opening / closing body), 4 ... Sunshade (2nd opening / closing body), 5 ... Motor main body, 7 ... Rotating shaft, 11 ... 1st centrifugal clutch, 12 ... 1st worm reduction mechanism A first worm shaft constituting a part, 13... A first worm wheel constituting a part of the first worm speed reduction mechanism, 14... A first output shaft, 15. ... 1st compression coil spring (1st elastic member), 21 ... 2nd centrifugal clutch, 22 ... 2nd worm axis | shaft which comprises a part of 2nd worm reduction mechanism, 23 ... A part of 2nd worm reduction mechanism A second worm wheel, 24 ... a second output shaft, 25 ... a second drive shaft, 26 ... a second actuator, 27 ... a second compression coil spring (second elastic member), 31, 33 ... a part of the auxiliary member 1st cover, 32, 34 ... constituting part of the auxiliary member That the second cover, 35 ... plate spring (first and second elastic member), 36 ... tension coil spring (first and second elastic members), 41 ... first power transmission cable, 42 ... second power transmission cable.

Claims (10)

A motor body that drives a rotating shaft;
When the rotating shaft rotates with the rotation of the rotating shaft, and the rotating shaft rotates at a speed equal to or higher than a first rotation speed set in advance, a driving force is transmitted to the first worm shaft, and the rotating shaft rotates the first rotation. A first centrifugal clutch that stops transmission of driving force to the first worm shaft when rotated at a speed less than a few;
When the rotation shaft rotates with rotation of the rotation shaft and the rotation shaft rotates at a speed less than a second rotation speed set in advance, a driving force is transmitted to the second worm shaft, and the rotation shaft rotates the second rotation. A second centrifugal clutch that stops transmission of the driving force to the second worm shaft when rotated at a speed of several or more,
A first worm wheel meshed with the first worm shaft and constituting a first worm reduction mechanism with the first worm shaft;
A drive device comprising: a second worm shaft meshing with the second worm shaft; and a second worm wheel constituting a second worm reduction mechanism. The drive device according to claim 1,
The driving device according to claim 1, wherein the second rotational speed is set to a value larger than the first rotational speed. The drive device according to claim 1 or 2,
The first centrifugal clutch includes:
A first drive shaft that rotates with rotation of the rotation shaft;
As the first drive shaft rotates, it pivots about the axis of the first drive shaft and is movable in the radial direction. The first worm shaft is connected to the first worm shaft at a radially outer connecting position. A first operating body that transmits driving force to the first worm shaft and is disconnected from the first worm shaft at a radially unconnected position;
A first elastic member that biases the first operating body radially inward,
The second centrifugal clutch is
A second drive shaft that rotates with the rotation of the rotation shaft;
As the second drive shaft rotates, it pivots about the axis of the second drive shaft and is movable in the radial direction, and is connected to the second worm shaft at the radially inner connection position. A second operating body that transmits a driving force to the second worm shaft and is disconnected from the second worm shaft at a radially unconnected position;
And a second elastic member for urging the second operating body radially inward. In the drive device according to any one of claims 1 to 3,
The drive device according to claim 1, wherein the first and second worm shafts are provided along the rotation shaft. The drive device according to claim 4, wherein
The drive device according to claim 1, wherein the first and second worm shafts are provided at both ends of the rotary shaft via the first and second centrifugal clutches and are provided on the same straight line as the rotary shaft. The drive device according to claim 4, wherein
The first and second worm shafts are arranged side by side so as to extend in the same direction and extend in parallel from one end side of the rotating shaft,
One of the first and second worm shafts extends longer than the other, and the outer periphery of the first or second worm wheel meshed with the tip side is the other first or second worm as viewed from the axial direction. A drive device characterized by being provided so as to exceed the extension line of the shaft. The drive device according to claim 4, wherein
The drive device according to claim 1, wherein the first and second worm shafts are arranged in parallel so as to be parallel to the rotation shaft and sandwich the motor body. The driving device according to any one of claims 3 to 7 dependent on claim 3 and claim 3.
At least one of the first and second elastic members is provided with an auxiliary member that restricts displacement in a direction perpendicular to the extending and contracting direction. A drive device according to any one of claims 1 to 8, comprising:
A first output shaft is coupled to the first worm wheel,
A first opening / closing body is connected to the first output shaft via a first power transmission cable,
A second output shaft is coupled to the second worm wheel,
An opening / closing device for an opening / closing body, wherein a second opening / closing body is connected to the second output shaft via a second power transmission cable. The opening / closing device of the opening-closing body of Claim 9 WHEREIN:
The first opening / closing body is one of a roof glass and a sunshade provided in a vehicle,
The second opening / closing body is the other of a roof glass and a sunshade provided in the vehicle,
An opening / closing device for an opening / closing body, wherein the first and second output shafts are arranged so as to be separated from each other in the vehicle front-rear direction.