JPH0643400U - 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 are connected via the worm 14.
The output means 30 (30-1 to 30-4), which is connected to the drive motor 12 so as to be interlockable and is integrally rotatable under the connection of the clutch 40, has an output shaft 30 It is arranged for each gear. Then, the solenoid 44 (44-1 to 44-
By controlling the engagement and disengagement of the clutch 40 by 4), the driving force of the drive motor 12 can be transmitted and output only to the corresponding output shaft via the movable shaft 32.

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, a plurality of output gears are connected via gear means so as to be interlockable with the drive of the drive motor, and the output gears are biased from the bias means. Output means having a movable shaft and an output shaft that are integrally rotatable by coupling of a clutch under a force is provided for each output gear.

The movable shaft of the output means is connected to the output gear so as to be integrally rotatable and movable in the axial direction, and can be held at the disengaged position of the clutch by the holding means. Then, the driving force of the drive motor can be transmitted and output only to the output shaft of the corresponding output means by connecting the clutch under the biasing force of the biasing means when the holding means releases the holding of the movable shaft. Has become.

[0013]

【Example】

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

As shown in FIG. 1, in the geared motor 10 according to the present invention, the drive of the drive motor 12 can be transmitted to the output gears 16 (16-1 to 16-4) via the gear means 14. Has become.

As the gear means 14, for example, a worm connected to the output shaft 12a of the drive motor 12 can be used. As shown in FIG. 2, the worm is located inside the storage portion 20 of the case main body 18. , Is rotatably supported.

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.

Here, in the present invention, a plurality of output gears 16 (16-1 to 16-4) are arranged, for example, spaced apart from each other by a predetermined distance, and meshed with a worm (gear means) 14. , Is connected to the drive of the drive motor 12 in an interlockable manner.

The output gears 16 are provided, for example, in a number corresponding to the drive mechanism of the seating posture control device mounted on the seat 22.

For example, FIG. 3 illustrates the power seat 22 in which the seat slide device 24, the seat tilt device 26, and the reclining device 28 are mounted as a seating posture control device. In such a seat 22, in addition to the drive mechanism 22a of the seat slide device 22 and the drive mechanism 28a of the reclining device 28, the drive mechanism of the seat tilt device 26 includes a front drive mechanism 26a and a rear drive mechanism 26b. Since they are formed separately, there are four drive mechanisms in total, and four output gears 16 (16-1 to 16-4) are provided correspondingly (see FIG. 1).

As can be seen from FIGS. 1 and 2, the output gear 16 (16-1 to 16-4) is rotatably supported by a pair of bushes 29, and the output gear 16 (16-1 to 16-4) is accommodated in the housing 20 inside the case body. It is stored in.

As shown in FIGS. 1 and 2, output means 30 (30-1 to 30-4) are provided for each output gear 16 (16-1 to 16-4).

As can be seen from FIG. 2, the output means 30 (30-1 to 30-4) is formed, for example, with a movable shaft 32 and an output shaft 34, and the movable shaft has an output gear 16 ( 16-1 to 16-4) are attached so that they can rotate together and can move in the axial direction. The partial cross section of the movable shaft 32 and the insertion hole 36 of the output gear 16 (16-1 to 16-4) are each formed in a corresponding non-circular detent shape such as a substantially square shape.

It is sufficient that the movable shaft 32 can rotate integrally with the output gear 16 (16-1 to 16-4) and can move in the axial direction. The configuration is not limited, and the movable shaft and the output gear may be connected by another shape. Further, the movable shaft 32 and the output gear 16 (16-1 to 16-4) may be connected by a spline joint or the like.

Reference numeral 38 in FIGS. 1 and 2 denotes a bearing that rotatably supports the movable shaft 32, and the bearing prevents the movable shaft from moving in a direction orthogonal to the axis.

Here, a clutch 40 is provided at the ends of the movable shaft 32 and the output shaft 34 that face each other. That is, the output shaft 34 can rotate integrally with the movable shaft only when the clutch 40 is engaged with the movement of the movable shaft 32 in the axial direction.

As shown in FIGS. 1 and 2, the movable shaft 32 is biased in the disengagement direction of the clutch 40 by the biasing force of the biasing means 42, for example. For example, a compression coil spring can be used as the biasing means 42, and the compression coil spring is wound around the movable shaft 32 between the clutch 40 and the output gear 16 (16-1 to 16-4).

In such a configuration, the clutch 40 is connected under the biasing force of the biasing means (compression coil spring) 42, so that integral rotation between the movable shaft 32 and the output shaft 34 can be reliably obtained. It is done.

In the present invention, the holding means 44 (44-1 to 44-4) forcibly pulling the movable shaft 32 in the separating direction of the clutch 40 and holding the movable shaft at the separating position is The output means 30 (30-1 to 30-4) is provided for each. As the holding means 44 (44-1 to 44-4), for example, an electromagnetic solenoid having an insertion hole 45 into which the movable shaft 32 can be loosely fitted can be used, and the solenoid covers the end of the movable end 32. So that they are arranged respectively.

The solenoid (holding means) 44 (44-1 to 44-4) has a known structure, and the structure of the solenoid itself is not the purpose of the present invention, and will not be described in detail.

Supply and interruption of electric current to the solenoids 44 (44-1 to 44-4) are performed by the motor control device, as in the drive motor 12, for example. Then, the movable shaft 32 is held by the corresponding solenoid 44 (44-1 to 44-4) under the signal processed and output according to a program such as a microcomputer installed in the motor control device. , Hold release can be switched individually.

It should be noted that the solenoid 44 (44-1 to 44-4) pulls and holds the movable shaft when supplying current, that is, when the solenoid is ON, and cuts off supply current, that is, the solenoid. At the time of OFF, the movable shaft is held and released, and the clutch 40 is connected under the biasing force of the biasing means 42.

The geared motor 10 as described above is assembled as shown in FIG. 4, and the output shaft 34 of the output means 30 (30-1 to 30-4) is connected to the torque cables 46 (46-1 to 46-4). ), Etc., and are connected to the drive mechanisms 24a, 26a, 26b, 28a of the respective devices (see FIG. 3).

For example, as shown in FIG. 2, the holding state of the movable shaft 32 of the corresponding output means 30-1 by the solenoid 44 (44-1) in the ON state, that is, the disengaged state of the clutch 40, Assume as an initial state of the geared motor 10. In such a state, even if the output gear 16 (16-1) and the movable shaft 32 rotate due to the rotation of the worm 14 accompanying the driving of the drive motor 12, the rotational force is not transferred to the output shaft 34. Not transmitted.

From such an initial state, for example, when the corresponding solenoid 44-1 is turned off and the holding of the movable shaft 32 is released, the movable shaft 32 receives the biasing force of the biasing means 42 as shown in FIG. Is biased in the coupling direction of the clutch 40. Then, the output shaft 34 rotates integrally with the output gear 16-1 accompanying the drive of the drive motor 12 via the movable shaft 32, and the drive force of the drive motor is output by the output means 30-1. It is transmitted to the shaft and output.

When the driving force of the motor is transmitted to the driving mechanism 24a via the torque cable 46-1, the seat slide device 24 is operated to adjust the front-rear position of the seat 22 (see FIG. 2).

Similarly, the solenoids 44 (44-2 to 44-4) corresponding to the other drive mechanisms 26a, 26b and 28a of the other seating posture control devices mounted on the seat 22 are turned on, When the OFF control is performed, the driving force of the drive motor 12 is transmitted and output to the output shaft 34, and the front and rear positions of the seat 22 and the tilt angles of the seat back 48 are adjusted under the operation of each device. It

As described above, in the geared motor 10 of the present invention, the seating posture control devices 24 to 28 mounted on the seat 22 individually operate under the drive of the single drive motor 12. It is possible. Therefore, it is not necessary to provide a geared motor for each seating posture control device, and the number of parts and weight can be reduced reliably.

By reducing the number of parts, the overall structure of the seat 22 can be sufficiently simplified, and both the parts cost and the product cost can be reduced.

Further, since it is not necessary to secure a space for the geared motor for each seating posture control device 24-28, it is possible to sufficiently prevent each device from becoming large. Therefore, sufficient cushioning properties can be ensured for the seat 22 even at the location where each device is provided.

Further, in the present invention, the solenoid 44 (44-1 to 44-4) is provided for each of the output means 30 (30-1 to 30-4), and the ON / OFF control of each solenoid is performed. Therefore, the output shaft 34 of each output means can be rotated individually. In other words, it is possible to output the driving force of the drive motor 12 to the plurality of output shafts 34 at the same time.

Therefore, the geared motor 10 can be used as a power seat having a memory function capable of reproducing a seat position stored in advance by operating a plurality of seating posture control devices 24 to 28 mounted on the seat 22 almost at the same time. Available and the range of application of geared motors is fully expanded.

Although the geared motor 10 is embodied as a configuration having four output gears 16 (16-1 to 16-4) in the embodiment, 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 22.

Further, although the holding means 44 (44-1, 44-4) is exemplified as an electromagnetic solenoid, the holding means 44 (44-1, 44-4) is not limited to this, and the holding means 44 (44-1, 44-4) is not limited to this, and the movable shaft 32 is separated from the clutch 40 by another means. It may be configured to be retained by.

However, if an electromagnetic solenoid is used as the holding means 44 (44-1 to 44-4), the clutch 40 can be smoothly connected and disengaged by controlling the supply and interruption of electric current to the solenoid. Is switched to. Therefore, despite the simple structure, the output target of the driving force can be reliably switched, and the malfunction of the output means 30 (30-1 to 30-4), that is, the malfunction of the seat 22 can be sufficiently prevented.

Here, in the embodiment, the worm connected to the output shaft 12a of the drive motor is embodied as the gear means 14. However, the present invention is not limited to this, and for example, as in the second embodiment shown in FIGS. 6 and 7, the spur gear 50 is used as the gear means, and the drive motor 12 is driven via the spur gear to the output gear 16. The geared motor 110 may be configured so that it can be transmitted to (16-1 to 16-4).

In such a configuration, the drive motor 12 is formed, for example, with the pinion 52 having the same pitch as the output gear 16 (16-1 to 16-4), and the spur gear (gear means) 50. The output gear and the pinion are arranged so as to be separated from each other by a predetermined distance based on the meshing of the teeth on the outer periphery of the.

As shown in FIG. 6, the ON / OFF control of the components centering on the output means 30 (30-1 to 30-4) and the solenoid 44 (44-1 to 44-4) is performed. The configuration in which the clutch 40 is connected by the original movement of the movable shaft 32 is the same as that of the above-described embodiment, and will not be described in detail here.

Also in such a configuration, the drive of the drive motor 12 is transmitted to the output gear 16 (16-1 to 16-4), that is, the movable shaft 32 via the spur gear 50, and the solenoid 44 (44 Since the driving force of the drive motor is transmitted to and output from the corresponding output shaft by the connection of the clutch 40 due to the OFF of -1 to 44-4), the same effect as that of the above embodiment can be obtained.

Further, although the spur gear 50 is exemplified as the gear means here, it suffices to have the meshable teeth of the pinion 52 of the drive motor and the output gear 16 (16-1 to 16-4). Therefore, the gear means may be formed from a ring-shaped internal gear having teeth on the inner peripheral surface.

In such a configuration, both the pinion 52 of the drive motor and the output gear 16 (16-1 to 16-4) are arranged on the inner circumference of the internal gear, and are driven by the drive motor. The driving force of the driving motor is transmitted to each output gear by the rotation of the gears.

Further, the location where the pinion 52 and the output gear 16 (16-1 to 16-4) of the drive motor are arranged is not limited to the same side of the gear means. That is, as in the third embodiment of the present invention shown in FIGS. 8 and 9, a ring gear 54 having an external gear 54a and an internal gear 54b forms a gear step to provide a pinion to the external gear and the internal gear, and output. The drive motor 12 and the output gear may be linked so as to be interlocked with each other by disposing the gears individually.

In the geared motor 210 having such a configuration, for example, the external gear 54a of the ring gear is formed so as to be able to mesh with the pinion 52 of the drive motor, and the internal gear 54b is formed as the output gear 16 (16-1 to 16-16). -4) It is formed so that it can mesh with each other, and the pinion and output gear are arranged at the corresponding locations.

Also in such a geared motor 210, the components centering on the output means 30 (30-1 to 30-4) and the ON / OFF of the solenoid 44 (44-1 to 44-4). The configuration for connecting the clutch 40 by the movement of the movable shaft 32 under control is similar to that of the above-mentioned embodiment, and therefore detailed description will be omitted.

Even in such a configuration, the drive of the drive motor 12 is transmitted to the output gears 16 (16-1 to 16-4) via the ring gear 54 and the solenoids 44 (44-1 to 44-4). It is said that the same effect as that of the above-described embodiment can be obtained because the driving force of the driving motor is transmitted to and output from the corresponding output shaft via the movable shaft 32 by connecting the clutch 40 when the clutch is turned off. There is no end.

Here, the pinion 52 of the drive motor is arranged outside the ring gear 54, and the output gears 16 (16-1 to 16-4) are arranged inside the ring gear, respectively. Gears 54b are formed corresponding to each. However, conversely, the external gear of the ring gear 54 is formed to be meshable with the output gear 16 (16-1 to 16-4), and the internal gear is meshed with the pinion 52 of the drive motor to form a pinion. The output gears may be arranged at corresponding positions.

Further, in the embodiment, the geared motor is used as a drive source of the power seat 22 of a passenger car or the like, 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 trains, 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 places, and therefore, a geared motor other than the power seat can be used as a driving source. The idea of this device can be applied.

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

[0059]

[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 dispose a geared motor for each seating posture control device, and the number of parts and weight can be surely reduced.

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

Further, if the holding means is an electromagnetic solenoid, the connection and disengagement of the clutch can be smoothly and surely switched by controlling the supply and interruption of the electric current to the solenoid. Therefore, despite the simple structure, The output target of the driving force can be reliably switched. Therefore, malfunction of the output means can be sufficiently prevented.

Even if the gear means is formed of any of a worm, a spur gear, and a ring gear, the rotation of the output shaft that is interlocked with the drive of the drive motor can be accurately obtained. Therefore, in any configuration, the same effect can be obtained. Can be fully expected.

[Brief description of drawings]

FIG. 1 is a partially exploded schematic perspective view of a geared motor according to an embodiment of the present invention.

FIG. 2 is a line AA of FIG. 1 in a disengaged state of the clutch.
FIG. 3 is a sectional view of the geared motor taken along the line.

FIG. 3 is a schematic side view of a seat on which a seating posture control device and a geared motor are mounted.

FIG. 4 is a schematic perspective view of the appearance of a geared motor.

5 is a cross-sectional view of the geared motor similar to FIG. 2, with the clutch engaged.

FIG. 6 is a partially exploded schematic perspective view of a geared motor according to a second embodiment of the present invention.

FIG. 7 is a schematic vertical sectional view of a geared motor according to a second embodiment.

FIG. 8 is a schematic perspective view of a geared motor according to a third embodiment of the present invention, which is partially disassembled.

FIG. 9 is a schematic vertical sectional view of a geared motor of a third embodiment.

[Explanation of symbols]

 10, 110, 210 Geared motor 12 Drive motor 14 Worm (gear means) 16 (16-1 to 16-4) Output gear 22 Seat 30 (30-1 to 30-4) Output means 32 Movable shaft 34 Output shaft 40 Clutch 42 Biasing means (compression coil spring) 44 (40-1 to 40-4) Holding means (solenoid) 50 Spur gear (gear means) 52 Pinion 54 Ring gear

Claims (6)

[Scope of utility model registration request] 1. A single drive motor which is drive-controlled under a predetermined switch operation; a plurality of output motors, which are connected through gear means so as to be interlocked with the drive of the drive motor. A gear; a movable shaft that is supported integrally with the output gear so as to be rotatable and movable in the axial direction, and that is biased in the clutch coupling direction under the biasing force of the biasing stage; Output means arranged for each output gear, the output means having an output shaft rotatable in conjunction with the movable shaft under the connection; and the movable shaft of the output means against the biasing force of the biasing means and the clutch. Holding means arranged for each output means so that the movable shaft can be held at the separated position of the clutch by forcibly pulling the movable shaft of the output means by the holding means. The coupling of the clutches under the biasing force of the biasing means Geared motor driving force of the driving motor is transmitted, which is only to the output shaft of the output means for. 2. The gear means is a worm connected to an output shaft of a drive motor, and an output gear formed so as to be meshable with the worm is arranged in the axial direction of the worm so as to be separated from the worm by a predetermined distance. The geared motor according to claim 1. 3. A pinion having the same pitch as that of the output gear is provided on the output shaft of the drive motor, and a spur gear having teeth on the outer peripheral surface thereof which can mesh with the pinion and the output gear is provided as gear means. 2. The geared motor according to claim 1, further comprising a pinion and an output gear, which are arranged on the outer periphery of the spur gear for a predetermined distance. 4. A pinion having the same pitch as that of the output gear is provided on the output shaft of the drive motor, and a ring-shaped internal gear having a tooth portion capable of meshing with the pinion and the output gear on an inner peripheral surface is provided as a gear. 2. The geared motor according to claim 1, further comprising a pinion and an output gear, which are arranged as means and are separated from each other by a predetermined distance on the inner circumference of the internal gear. 5. A pinion is provided on the output shaft of the drive motor, and the meshable tooth portion of the pinion is the outer gear or the internal gear, and the meshable tooth portion of the output gear is the other. 2. The geared motor according to claim 1, wherein ring gears each formed as a gear of the gear are arranged as gear means. 6. The holding means is an electromagnetic solenoid that holds the movable shaft in a disengaged position of the clutch under the supply of electric current and releases the holding of the movable shaft under the interruption of the supplied electric current. Item 6. A geared motor according to any one of items 1 to 5.