JPH0645138U - Geared motor - Google Patents

Abstract

(57) [Summary] [Purpose] A plurality of seating posture control devices of a power seat can be operated under the drive of one drive motor. [Structure] A plurality of output gears 16 (16-1 to 16-4) are supported around a pinion 14 of a drive motor 12 so as to be movable between a meshing position and a non-meshing position with respect to the pinion. Then, the cam 34 supporting the support shaft 16b of the output gear 16 (16-1 to 16-4) is rotated under the drive of the selection motor 32, and moved to the meshing position along the action portion 34b of the cam. The driving force of the driving motor 12 can be transmitted and output only to the output gear.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a geared motor provided as a drive source for a seating posture control device provided along with a power seat.

[0002]

[Prior art]

 For example, a so-called power seat equipped with a seating posture control device that can be operated under the drive control of a motor is well known as a vehicle seat represented by an automobile.

In a power seat of an automobile or the like, a seat slide device that adjusts a seat position in the front-rear direction, a seat tilt device that adjusts a seat tilt angle (tilt angle) in the front-rear direction, and a seat back A reclining device for adjusting the tilt angle (reclining angle) is also installed. The overall position of the seat, that is, the seated posture, depends on the seated person's preference, body shape, etc. due to the operation of each device accompanying the driving of the corresponding motor under a predetermined switch operation. The power seat is configured so that it can be adjusted as desired.

A DC geared motor is generally used as a drive source for such a seating posture control device for a power seat, and the motor is drive-controlled by a motor control device having a microcomputer or the like, for example. .

According to such a power seat, the seat position suitable for the seated person's preference, body shape, etc., that is, the seated posture, can be easily obtained under predetermined switch operation, etc. Comfort and safety can be sufficiently secured.

[0006]

[Problems to be solved by the device]

 By the way, in a known power seat, a motor is provided for each seating posture control device mounted on the seat, and each device operates under the drive of an individual motor, that is, a seat, a seat back, and the like. The movable member of is movable.

However, in a power seat of an automobile or the like, usually, a plurality of seating posture control devices such as a seat slide device, a seat tilt device, and a reclining device are provided side by side, so that one seat is provided with these seating posture control devices. You need as many motors as there are devices. Therefore, the total number of parts of the seat increases, and the increase in weight due to the multiple motors is inevitable.

[0008] The increase in the number of parts associated with the increase in the number of motors tends to complicate the configuration, resulting in an increase in part cost in proportion to the number of parts and an increase in product cost due to complicated assembly work. May be caused.

Further, since it is necessary to secure a space for mounting the motor for each seating attitude control device, it is inevitable that each device is upsized. Therefore, there is a possibility that the overall size of the seat may be increased, and the cushioning property of the seat may be reduced due to the increase in size of each device, which is not preferable.

The present invention aims to provide a geared motor capable of operating a plurality of seating posture control devices with one unit.

[0011]

[Means for Solving the Problems]

 In order to achieve this object, according to the present invention, an output gear having a pair of support shafts as rotation centers is movably supported between a meshing position and a non-meshing position with respect to a pinion of a drive motor. , A plurality of them are arranged around the pinion. One of the support shafts of the output gear is supported by a cam, which is composed of a combination of an arc portion that holds the output gear in a non-meshing position with respect to the drive motor pinion and an action portion that moves the output gear to the meshing position. Is formed with a continuous peripheral edge.

Then, the action portion of the cam is rotated under the drive of the select motor, and only the output gear meshed with the pinion of the drive motor by moving the cam to the mesh position along the operation portion of the cam, The drive force of the drive motor can be transmitted and output.

[0013]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, in the geared motor 10 according to the present invention, the drive of the drive motor 12 is transmitted to the output gear 16 (16-1 to 16-4) via the pinion 14. It is possible.

Generally, a DC motor is used as the drive motor 12, and the drive motor is drive-controlled by, for example, a motor control device (not shown) having an operation switch or the like. Note that the configuration, operation contents, and the like of such a motor control device will not be described in detail because they are not the purpose of this consideration.

The pinion 14 is provided on the output shaft 12 a of the drive motor 12. As can be seen from FIG. 3 in addition to FIG. 1, between the pinion 14 and the drive motor output shaft 12a is, for example, a pair of spline shafts 17 provided at the pinion insertion hole and the output shaft tip. Therefore, they are integrally and rotatably connected.

Further, as shown in FIG. 2, a plurality of output gears 16 (16-1 to 16-4) are arranged around the pinion 14 so as to be separated from each other by a predetermined distance. As can be seen from FIGS. 1 to 3, the output gear 16 (16-1 to 16-4) is formed integrally with a pair of support shafts 16a and 16b, respectively, around the center of rotation. It is erected and pivotally supported between the main body 18 and a supporting plate 20 fixed to the case main body.

Here, in the present invention, the output gear 16 (16-1 to 16-4) is movably supported between a meshing position and a non-meshing position with respect to the pinion 14. For example, the support plate 20 is formed with insertion holes 22 in each of which the support shaft 16b of the output gear 16 (16-1 to 16-4) can be loosely inserted, and each insertion hole is formed in the pinion 14. Each of the holes is formed as a long hole radially extending around the center of rotation, that is, the output shaft 12a of the drive motor.

As shown in FIGS. 2 and 3, the support plate 20 is formed in, for example, a substantially cross shape corresponding to the location of the output gears 16 (16-1 to 16-4). However, the support plate 20 is not limited to the substantially cross shape, as long as the insertion hole 22 can be formed in the position corresponding to the output gear 16 (16-1 to 16-4).

For example, FIG. 2 illustrates a state in which the output gear 16-1 is arranged at the meshing position with respect to the pinion 14 and the other output gears 16-2 to 16-4 are arranged at the non-meshing positions. In this way, the movement of the support shaft 16b inside the insertion hole of the support plate 20 allows the output gear 16 (16-1 to 16-4) to move between the meshing position and the non-meshing position with the pinion 14. ing.

By the way, the output gears 16 (16-1 to 16-4) are provided, for example, in a number corresponding to the drive mechanism of the seating posture control device mounted on the seat 24.

For example, FIG. 4 illustrates the power seat 24 in which the seat slide device 26, the seat tilt device 28, and the reclining device 30 are mounted as a seating posture control device. In such a seat 24, usually, in addition to the drive mechanism 26a of the seat slide device 26 and the drive mechanism 30a of the reclining device 30, the drive mechanism of the seat tilt device 28 includes a front drive mechanism 28a and a rear drive mechanism. 28b is formed separately.

Therefore, there are a total of four drive mechanisms for the seating attitude control devices 26 to 30, and four output gears 16 (16-1 to 16-4) are provided correspondingly (see FIG. 2).

In this invention, the select motor 32 causes the cam 34 to rotate by a predetermined angle so that only one of the output gears 16 (16-1 to 16-4) meshes with the pinion 14. It is configured to move to a position.

As can be seen from FIG. 5 in addition to FIGS. 1 and 3, the cam 34 is, for example, loosely inserted into the support shaft 16b of the output gear 16 (16-1 to 16-4) and movable. As a groove having a substantially ring-shaped continuous periphery, it is formed in one plane of the select gear 36 that rotates under the drive of the select motor 32.

As shown in FIGS. 3 and 5, the cam 34 is, for example, an arc that holds the output gears 16 (16-1 to 16-4) in the non-meshing position regardless of the rotating operation of the select gear 36. It is formed by the combination of the portion 34a and the action portion 34b which is partially provided at one place and moves only one of the output gears to the meshing position with the pinion 14. Then, by moving the support shaft 16b in the pinion direction along the periphery of the working portion 34b, only one of the output gears 16 (16-1 to 16-4) is engaged with the pinion 14 so that the cam is engaged. 34 are configured.

As can be seen from FIGS. 3 and 5, for example, the pinion 38 is rotatably connected integrally to the output shaft 32a of the selection motor 32 via a pair of spline shafts 39 and the like. The pinion 38 is arranged in a meshed state with the select gear 36 formed in the shape of an external gear.

The select gear 36 is formed at the center of rotation, for example, with an insertion hole 36a into which the bush 40 can be fitted. Then, the output shaft 12a of the drive motor is inserted into the through hole 36a of the select gear via the bush 40, and the select gear is rotatably attached to the output shaft 12a.

The drive control of the selection motor 32 is performed by a motor control device, like the drive motor 12, for example. Then, the cam 34 is rotated by a predetermined angle based on a signal processed and output according to a program such as a micro computer (microcomputer) provided in the motor control device, and any one of the output gears 16 (16 The selection motor 32 is drive-controlled so that (-1 to 16-4) is meshed with the pinion 14.

That is, in the geared motor 10 of the present invention, the output of the driving force of the driving motor 12 is output by the rotation of the cam 34, that is, the acting portion 34b of the cam in accordance with the driving of the selecting motor 32. Gear 16 (16-1 to 16-4) is selected.

The geared motor 10 as described above is assembled as shown in FIG. 6, and as shown in FIG. 4, output is performed via a torque cable 42 (42-1 to 42-4) which serves as output means. The gears 16 (16-1 to 16-4) are connected to the drive mechanisms 26a, 28a, 28b, 30a of the seating attitude control device, respectively.

As shown in FIG. 1, FIG. 3 and FIG. 6, the non-circular detent shape, for example, the concave portion 44 having a substantially quadrangular shape forms the support shaft 16a of the output gear 16 (16-1 to 16-4). , Each of which has been drilled. Then, the torque cables 42 (42-1 to 42-4) having terminals of corresponding shapes are fitted into the recesses 44, and the ring-shaped screw portion (not shown) of the torque cable terminals is screwed into the screw portion 46 of the case body 18. The drive mechanism 26a, 28a, 28b, 30a of the seating attitude control device is connected to the corresponding output gear 16 (16-1 to 16-4) via each torque cable so as to be interlockable. (See FIGS. 4 and 6).

In such a configuration, only the output gear 16 (16-1 to 16-4) that has moved in the pinion direction along the acting portion 34b of the cam rotates and meshes with the pinion 14 to drive. The driving force of the use motor 12 is transmitted to the corresponding drive mechanism 26a, 28a, 28b, 30a via the torque cable 42 (42-1 to 42-4). Then, the front and rear positions of the seat 24, the tilt angle, the reclining angle of the seat back 48, etc. are respectively operated by the operation of the seating posture control devices 26 to 30 accompanying the driving of the drive mechanisms 26a, 28a, 28b, 30a. Individually adjusted (see Figure 4).

As shown in FIG. 2, for example, when the output gear 16-1 is meshed with the pinion 14 by the acting portion 34b of the cam, the output shaft 16b of the other output gears 16-2 to 16-4 is used. Is located in the arc portion 34a of the cam. Therefore, the output gears 16-1 to 16-4 do not move in the pinion direction, and these output gears are held in the non-meshing position.

Here, as can be seen from FIGS. 1, 3 and 6, the threaded portion 46 of the case body 18 is formed separately from the case body, and has a length extending in the radiation direction of the case body. It is movably attached together with the output gear 16 (16-1 to 16-4) through a hole-shaped guide hole 50. The screw portion 46 is supported so as to be non-rotatable with respect to the case main body 18 and radially movable along the guide hole 50, for example, by a detent shape or the like.

In such a configuration, the screw portion 46 becomes movable together with the output gear 16 (16-1 to 16-4), and the movement of the output gear between the meshing position and the non-meshing position is controlled by the torque cable 42 (42 -1 ~ 42-4) can be done smoothly.

As described above, in the geared motor 10 of the present invention, the seating posture control devices 26 to 30 mounted on the seat 24 are individually operated under the drive of the single drive motor 12. It is possible. Therefore, it is not necessary to dispose a geared motor for each seating posture control device 26 to 30, and it is possible to reliably reduce the number of parts and the weight of the power seat.

By reducing the number of parts, it is possible to sufficiently simplify the overall configuration of the seat 24 and reduce both the parts cost and the product cost.

Further, since it is not necessary to secure a space for the geared motor for each seating posture control device 36 to 30, it is possible to sufficiently prevent each device from becoming large. Therefore, sufficient cushioning properties can be ensured for the seat 24 even at the location where each device is provided.

Further, in the present invention, the driving force of the driving motor 12 is directly transmitted to each output gear via the pinion 14 under the movement of the output gear 16 (16-1 to 16-4). Therefore, it is sufficient to movably support the output gear and to provide the cam 34 for moving the output gear. Therefore, the number of parts can be reduced and the structure of the geared motor can be sufficiently simplified.

Since the output gear 16 (16-1 to 16-4) is moved to the meshing position with the pinion 14 along the acting portion 34b of the cam, a wide operating range of the cam 34 can be secured. Therefore, the positional accuracy of the acting portion 34a of the cam is not required to be so high, and the cam 34 can be easily formed.

Further, the cam 34 is rotated under the drive of the selection motor 32 which is separate from the drive motor 12. That is, since a high torque can be set in the drive motor 12, it is possible to sufficiently cope with a sitting posture control device with a large load, and the selection range of the target sitting posture control device is sufficiently expanded.

Here, for example, a fixed stopper gear (not shown) that meshes with the output gear 16 (16-1 to 16-4) in the non-meshing position to prevent rotation of the output gear in the non-meshing position is provided. It is preferable to provide each output gear.

In such a configuration, the output gear 16 (16-1 to 16-4) is reliably prevented from rotating in the non-meshing position, so that an excessive external force acts on the seat 24, the seat back 48, and the like. However, unexpected movement of these movable members can be sufficiently prevented.

In the embodiment, the geared motor 10 is embodied as a structure having four output gears 16 (16-1 to 16-4), but the number of output gears is not limited to this. It may be changed according to the number of seating posture control devices mounted on the seat 24.

The recess 44 of the output shaft 16a of the output gear is exemplified as a substantially rectangular shape, but the shape is not limited to this as long as it is a non-circular detent shape.

The select motor 32 and the select gear 36 are linked to each other by meshing of a pinion 38 with a select gear formed of an external gear. However, the invention is not limited to the combination of the external gear and the pinion 38.For example, a worm is formed on the output shaft 32a of the select motor, and a worm wheel that can mesh with the worm is used as the select gear 36. The spaces may be linked.

However, if a combination of the select gear 36 formed of an external gear and the pinion 38 is used, the rotation of the cam 34, that is, the output gear 16 (16- Selection of 1 to 16-4) can be smoothly and surely obtained.

According to such a configuration, as shown in FIG. 6, the driving motor 12 and the selecting motor 32 can be juxtaposed in the same direction, so that the overall structure of the geared motor 10 is complicated and complicated. Larger size can be prevented sufficiently.

Further, although the cam 34 is embodied as a structure in which the select gear 36 is bored, the cam is sufficient if it can rotate integrally with the select gear, and therefore the present invention is not limited to this, and a separate It may be formed on the body and connected so as to be interlockable with a connecting pin or the like.

However, by directly piercing the cam 34 on one plane of the select gear 36 as in the embodiment, it is possible to reliably prevent an increase in the number of parts and a complicated structure.

Further, in the embodiment, the cam 34 is exemplified as a groove provided in the select gear 36. However, the cam 34 supports the support shaft 16b, and the output gear (16-1 Since it is sufficient to have a continuous peripheral edge for moving (1) to (4-4), the cam may be formed of a ring or the like having an inner peripheral surface or an outer peripheral surface having a peripheral edge for supporting the support shaft.

However, by using the groove as the cam 34, the cam can be formed in the select gear 36. Therefore, complication of the configuration can be sufficiently prevented.

In the embodiment, the geared motor that drives the power seat of a passenger car or the like is embodied, but a geared motor mounted on the power seat is sufficient, and the invention is not limited to this. The geared motor of the present invention may be applied to seats for airplanes, ships, etc. and seats for bean jam, hairdressing, etc.

Further, the geared motor of the present invention only needs to have a structure capable of transmitting the driving force of one driving motor to a plurality of locations, so that the geared motor other than the power seat can be used as a driving source. The idea of this device can be applied.

The above-mentioned embodiments are for explaining the present invention, and are not intended to limit the present invention in any way, and all modifications and alterations made within the technical scope of the present invention are also applicable. It goes without saying that it is included in the invention.

[0057]

[Effect of device]

 As described above, according to the geared motor of the present invention, the seating posture control device mounted on the seat can be individually operated under the drive of one drive motor. Therefore, it is not necessary to provide a geared motor for each seating posture control device, and the number of parts and weight of the power seat can be reliably reduced.

By reducing the number of parts, the overall structure of the seat can be sufficiently simplified, and both parts cost and product cost can be reduced.

Further, in the present invention, the driving force of the driving motor is directly transmitted to each output gear via the pinion under the movement of the output gear, so that the output gear can be moved. It suffices to provide a cam that supports and moves the output gear. Therefore, the number of parts can be reduced and the structure of the geared motor can be sufficiently simplified.

Further, since the output gear is moved to the meshing position with the pinion along the acting portion of the cam, a wide action range of the cam can be secured. Therefore, the position accuracy of the acting portion of the cam is not required to be so high, and the cam can be easily formed.

If the groove formed on one plane of the select gear is used as a cam, an increase in the number of parts and complication of the structure can be sufficiently prevented.

Further, if the select motor and the select gear are connected by the combination of the select gear consisting of the external gear and the pinion, the output gear can be selected by the rotation of the cam, despite the simple structure. Obtained smoothly and reliably. Further, since the drive motor and the select motor can be juxtaposed in the same direction, it is possible to sufficiently prevent the overall structure of the geared motor from becoming complicated and large.

Further, if a non-circular recess is formed in the support shaft of the output gear, the output from the drive motor can be reliably obtained by fitting the torque cable terminal having the corresponding non-rotating shape. . Therefore, the structure is not complicated and the connecting work of the torque cables is sufficiently simplified.

If a fixed stopper gear that meshes with the output gear at the non-meshing position and prevents rotation at the non-meshing position is provided for each output gear, the rotation of the output gear at the non-meshing position is ensured. Therefore, even if an excessive external force acts on the movable member or the like to be actuated, it is possible to sufficiently prevent the abrupt movement of the movable member.

[Brief description of drawings]

FIG. 1 is a partial schematic vertical sectional view of a geared motor according to the present invention, taken along the axial direction of an output shaft of a drive motor.

2 is a cross-sectional view of the geared motor taken along the line AA of FIG.

FIG. 3 is a schematic exploded perspective view of a geared motor.

FIG. 4 is a schematic side view of a seat on which a seating posture control device and a geared motor are mounted.

5 is a cross-sectional view of the geared motor taken along the line BB of FIG.

FIG. 6 is a schematic perspective view of a geared motor.

[Explanation of symbols]

 10 Geared motor 12 Drive motor 14 Pinion 16 (16-1 to 16-4) Output gear 24 Seat 32 Select motor 34 Cam 34a Cam arc part 34b Cam action part 36 Select gear 38 Pinion 42 (42-1 ~ 42-4) Torque cable (output means) 44 Recess

Claims (5)

[Scope of utility model registration request] 1. A drive motor which is drive-controlled under a predetermined switch operation; a pinion provided on an output shaft of the drive motor; and a pair of support shafts integrally provided around a rotation center. A plurality of output gears formed around the pinion so as to be movable between the meshing position and the non-meshing position with respect to the pinion; and rotating around the output shaft of the drive motor with respect to the output shaft. A select gear that is freely provided; an arc portion that is provided so as to be rotatable integrally with the select gear, supports one support shaft of the output gear, and holds the output gear in a non-meshing position with respect to the pinion; A cam having a continuous peripheral edge in combination with an operating portion that moves only one of the output gears to a meshing position; a cam that is operably connected to the select gear and that is rotated by the self drive of A selecting motor for rotating the action part in correspondence with the output gear; and for driving by the rotation of the operating part of the cam accompanying the rotation of the selecting gear under the driving of the selecting motor. The output gear to be meshed with the pinion of the motor is selected, and the selected output gear is moved to the meshing position along the action part of the cam,
A geared motor in which the driving force of the driving motor is transmitted only to the output gear meshed with the pinion, and the driving force of the driving motor can be output via the output means provided for each output gear. 2. The geared motor according to claim 1, wherein the cam is formed in one plane of the select gear as a substantially ring-shaped continuous groove into which one of the output shafts of the output gear can be loosely inserted. 3. The select gear is formed as an external gear, and a pinion capable of meshing with the external gear is provided on the output shaft of the select motor, and the select gear is rotated by the rotation of the pinion accompanying the drive of the select motor. The geared motor according to claim 1, which rotates together with the cam. 4. A pair of support shafts of the output gear, one support shaft of which is supported by the cam, the other support shaft is provided with a non-circular detent shaped concave portion, and a corresponding shaped terminal is formed. 4. The geared motor according to claim 1, wherein the torque cable having the above is used as the output means, and the torque cable end is fitted into the recess of the support shaft to output the driving force of the driving motor through the torque cable. 5. A fixed stopper gear, which meshes with an output gear in a non-meshing position and prevents rotation of the output gear in the non-meshing position, is provided for each output gear. Geared motor.