JPS63159152A - Power transmission device for automobile - Google Patents

Abstract

PURPOSE:To selectively transmit power to any one of a plurality of operation shaft by means of a single motor by installing, on a rotor, a motor to one side of the output shaft of which a solenoid clutch for self-rotation and No.1 solenoid clutch for power transmission are connected and to the other side thereof No.2 solenoid clutch is connected for power transmission respectively. CONSTITUTION:When a situation in which power is transmitted to a certain set of 2 mutually opposing operation shafts 30 among even number of operation shaft 30 pivoted on a base frame 10, is switched to another situation in which power is transmitted to another set of operation shafts 30 oppositing to each other, power transmitting solenoid clutches 60, 61 on both output shafts 41, 42 of a motor 40 shaft shall be put in off state to release their engagements with clutch plates 31, and a self-rotation solenoid clutch 50 is put in On state to make a gear 51 mesh with a rack gear 15. Then, the motor 40 shall be driven to rotate a rotor 20 until the corresponding recesses 70 engage with stopper balls 71. Then the motor 40 shall be stopped, a self-rotation solenoid clutch 50 shall be put in off state, and the power transmitting solenoid clutches 60, 16 shall be put in ON state so as to connect output shaft 41, 42 to operation shafts 30, 30. Thus, a plurality of operation can be put in action by means of a single motor so that a space for installation may be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a power transmission device for an automobile, and more particularly to a power transmission device that can output power to a plurality of action shafts using a single motor, and is particularly applicable to a seat used in an automobile. This is suitable for application to height or angle adjustment devices.

[Conventional technology] Conventionally, various types of power transmission devices have been provided.

For example, when considering the case where power is transmitted to two orthogonal axes to move a predetermined object to a predetermined position on an Means was taken to move it by means of an actuating motor.

For example, if we consider the adjustment of car seats, etc.
A device has been provided that allows adjustment of the reclining angle of the seat, movement of the seat in the front-rear direction, and movement of the front end of the seat in the up-down direction, all electrically.

However, in such a conventional automobile seat moving device, when using the three types of moving means mentioned above, for example, three forward and reverse rotating motors are provided, and each motor moves the seat in a predetermined direction and angle. Alternatively, adjustments were made by moving the height etc.

Furthermore, in recent years, a device has been provided that uses a motor to adjust the angle of the rearview mirror, which is attached to the door of an automobile. In such a device, it is necessary to adjust the angle of the rearview mirror vertically and horizontally, and the right rearview mirror and the left rearview mirror are each adjusted correctly when viewed from the driver's seat. It was possible to operate with a reverse rotation motor. Therefore, four motors are required to adjust the rearview mirror of one automobile.

In the various power transmission devices that have been used in the past, in order to perform a specific operation, a number of motors that match the number of operations required are required, resulting in an increase in the size of the entire device. At the same time, the weight also increased, and the probability of failure was high.

[Problems to be Solved by the Invention] Therefore, the present invention solves the drawbacks of the various power transmission mechanisms conventionally used, such as an increase in gravity and an increase in space due to an increase in the number of motors. In order to deal with this problem, an electromagnetic clutch for rotation and an electromagnetic clutch for power transmission are attached to one output shaft of a single motor having two output shafts, and an electromagnetic clutch for power transmission is attached to the other output shaft. attached,
By selecting a clutch plate to which rotational force should be transmitted by operating an electromagnetic clutch for rotation, and by forming a configuration in which rotational force can be transmitted to the selected clutch plate by operating an electromagnetic clutch for power transmission, a single motor can be generated. It is possible to perform multiple operations using two types of electromagnetic clutches.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention connects an electromagnetic clutch for rotation and a first electromagnetic clutch for power transmission to one output shaft, and connects an electromagnetic clutch for rotation to one output shaft, and A motor to which a second power transmission electromagnetic clutch is connected is installed on a rotating body, a ring-shaped gear is arranged at the bottom of this rotating body, and the rotating body is moved in a predetermined position along the gear by engaging the rotation electromagnetic clutch. Rotation is stopped at the stop position, and rotational force is transmitted to the clutch plate at the stop position by applying one or both of the power transmission electromagnetic clutches.

[Operation] In the present invention, the motor is rotated and the electromagnetic clutch for rotation is engaged.

Then, the rotational force of the motor is transmitted to the gear, and due to the rotation of the gear, the rotating body on which the motor and the electromagnetic clutch are arranged rotates through a predetermined angle.

By this rotation of the rotating body, the power transmission electromagnetic clutch is rotated to a position facing a predetermined clutch plate, and then the rotation electromagnetic clutch is disengaged to stop the rotation of the rotating body.

Thereafter, by engaging the power transmission electromagnetic clutch, the rotational force of the motor is transmitted to the clutch plate located opposite the power transmission electromagnetic clutch.

Also, at this time, since the electromagnetic clutches for power transmission are provided at the two output wheels of the motor, even if the rotation angle is the maximum when rotating so that the electromagnetic clutch for power transmission faces the clutch plate to which power is to be transmitted. 90' is sufficient.

Note that when a unidirectional rotating motor is used, the rotation direction of both power transmission electromagnetic clutches is reverse rotation, so even if the output is to the same working shaft, by selecting the power transmission electromagnetic clutch, the rotation direction of both power transmission electromagnetic clutches will be reverse rotation. It can be extracted as

However, at this time, if a single axis of action is used to move the chair back and forth, for example, the rotating body will be moved by moving the chair forward and backward. will be rotated 180°. In addition, the clutch plates are arranged to face each other around the rotating body, and
If a set of opposing clutch plates is formed so that the chair is moved forward by the rotation of one clutch plate, and the chair is moved backward by the rotation of the other clutch plate, the rotating body is fixed. So, simply N for power transmission
, the chair can be adjusted in the fore-and-aft direction simply by switching the magnetic clutch.

Further, when a forward/reverse motor is used as the motor, the chair can be adjusted in the front-rear direction using only the combination of the same power transmission electromagnetic clutch and the clutch plate, as described in the above example. Furthermore, in this case, if the clutch plates are arranged to face each other around the rotating body, when the rotating body stops rotating,
By simultaneously engaging both power transmission electromagnetic clutches, rotational force in opposite directions can be output to the two shafts at the same time.

Therefore, a single motor with two electromagnetic clutches attached to one output shaft and one electromagnetic clutch attached to the other output shaft can be rotated to multiple clutch plate positions and rotated. The rotation of the motor can be transmitted to the clutch plate located at the corresponding position of the electromagnetic clutch at the stopped position.

Therefore, by connecting operating shafts having different functions to each clutch plate, a single motor can perform a plurality of operations.

[Example] Embodiments of the present invention will be sequentially described below according to illustrated examples.

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG.

In this embodiment, the rotating body 20 is installed in the center of the base frame 10, and the circumferential plate 11 of the base frame 10 has a rotary body 20 mounted at an equal angle and at an equal distance from the center of rotation of the rotating body 20. A clutch plate 31 having an operating shaft 30 protruding from the outside is pivotally supported.

The base frame 10 is formed into a cylindrical shape with its top and bottom closed by a top plate 12, a bottom plate 13, and a circumferential plate 11.
A support hole 14 for rotatably supporting the rotating body 20 at the center of 3.
is the provision. Furthermore, a ring-shaped and tapered rack gear 15 centered on the support hole 14 is fixed to the bottom plate 13 of the base frame 10 corresponding to the periphery of the support hole 14. Also, a terminal 16 for power supply is provided upright from the left side of the bottom plate 13 to the rotating body 20 in FIG.

The rotating body 20 has a support shaft 21 projecting downward from its center to be supported in the support hole 14 of the base frame 10, and a tapered intermediate shaft 21 at a position corresponding to the rack gear 15 of the base frame 10. Gear 22 is pivotally supported. Further, a motor 40 is fixed to the upper surface of the rotating body 20, and the t of this motor 40 is
51 output shaft 41 is sequentially provided with an electromagnetic clutch 50 for rotation and a first electromagnetic clutch 60 for power transmission, and the second output shaft 42 of the motor 40 is provided with a second electromagnetic clutch 61 for power transmission. be.

Moreover, the electromagnetic clutch 50 for autorotation is for transmitting rotational force between the first output shaft 41 of the motor 40 and a tapered pinion gear 51 that meshes with the intermediate gear 22.
By turning on this electromagnetic clutch 50 for rotation, the rotation of the motor 40 is transmitted to the pinion gear 51, and by disengaging the electromagnetic clutch 50 for rotation, the rotation of the motor 40 is transmitted to the pinion gear 51.
1 is free. Therefore, by turning on this electromagnetic motor for rotation and the clutch 50, the motor 40
The rotation of the rack gear 15 is transmitted to the pinion gear 51, the intermediate gear 22, and the rack gear 15 in order, but the rack gear 15 is
Since it is fixed at O, as a reaction, the rotating body 2
0 will rotate.

Further, when the rotating body 20 stops at a predetermined position, the first power transmission Ml magnetic clutch 60 or the second power transmission electromagnetic clutch 61 is activated.
Alternatively, by turning on the second power transmission electromagnetic clutch 61, the rotation of the motor 40 is transmitted to the opposing clutch plate 31, and the second power transmission electromagnetic clutch 60 is turned on.
61, the clutch plate 31 becomes free. Therefore, by engaging either of the power transmission electromagnetic clutches 60, 61, the rotation of the motor 40 is transmitted to the operating shaft 30 via the clutch plate 31.

As shown in FIG. 1, when the latch plates 31 are arranged at equal pitches and in an even number, the first power transmission electromagnetic clutch 60 and the second power transmission electromagnetic clutch 61 are activated by stopping the rotation of the rotating body 20. Both of them face the clutch plate 31. Therefore, in this case, the first
By simultaneously engaging the power transmission electromagnetic clutch 60 and the second power transmission electromagnetic clutch 61, rotational force in opposite directions can be transmitted to the opposing clutch plates 31 at the same time. Of course, even in such a case, only one of the first power transmission electromagnetic clutch 60 or the second power transmission electromagnetic clutch 61 is engaged to rotate only the single clutch plate 31. You can also do that.

In this embodiment, a recess 7 is provided on the outer periphery of the rotating body 20 in order to stop the rotation of the rotating body 20 after one rotation at a predetermined position.
0, and a stop ball 71 and this stop ball 71 are placed in the recess 7 at a location located in the recess 70 of the circumferential plate 11 of the base frame lO.
A spring 72 is provided to press the spring to zero.

However, without regulating the rotation angle using the recess 70 or the like, for example, by detecting the rotation at a predetermined angle with a sensor using a magnet or the like, and feeding the detection result to the motor 40. , rotation can be completed at an appropriate position. In order to stop the rotation at such an appropriate position, for example, optical detection means may be used in addition to magnetic detection means using a magnet or the like.

Next, the operation and operation of the power transmission device according to such an embodiment will be explained.

Assume that before the start of actual use, the motor 40 and the first power transmission i1 are located in the position shown in FIG. 1, for example, and the magnetic clutch 60 is located therein. Also, the motor 40 at this time is
Assume that it is a one-way rotating motor 40. Also motor 40
Regarding the rotation direction, the output rotation from the first power transmission electromagnetic clutch 60 is assumed to be forward rotation, and the output rotation from the second power transmission electromagnetic clutch 61 is assumed to be reverse rotation.

In such a case, for example, if the rotation of the motor 40 is to be transmitted as normal rotation to the working shaft 30 on the right side in FIG. By magnetically connecting the first power transmission electromagnetic clutch 60 and the right clutch plate 31, the rotation of the motor 40 is controlled by the right working shaft 30.
It is possible to transmit the power as normal rotation. Note that at this time, the electromagnetic clutch 50 for autorotation is disengaged.

At this time, the second power transmission electromagnetic clutch 61 also faces the clutch plate 31 on the left side of the drawing.

Therefore, when transmitting rotational force only to the clutch plate 31 on the right side of the drawing, the first power transmission electromagnetic clutch 60
However, in the case where the rotational force in the opposite direction is simultaneously transmitted to the clutch plate 31 on the left side of the drawing, the second power transmission electromagnetic clutch 60 is turned on at the same time as the first power transmission electromagnetic clutch 60 is turned on. By also engaging the clutch 61, rotational force in opposite directions can be transmitted from the single motor 40 to the two operating shafts 30.

Of course, at this time, only the second power transmission electromagnetic clutch 61 can be engaged to output only reverse rotation to the left operating shaft 30.

Furthermore, when the rotation speed of the first power transmission electromagnetic clutch 60 is too high, the first power transmission electromagnetic clutch 60 and the second power transmission electromagnetic clutch 61 are disengaged and the rotation electromagnetic clutch 60 is turned off. 50 and motor 4
Rotate 0. Then, the rotational force of the motor 40 is sequentially transmitted to the pinion gear 51, intermediate gear 22, and rack gear 15 via the electromagnetic clutch 50 for rotation, and the rotational force is transmitted to the rotating body 20.
Rotate 180' in the positive direction around the support shaft 21,
The second power transmission electromagnetic clutch 61 is opposed to the right clutch plate 31. Thereafter, the rotation electromagnetic clutch 50 is disengaged, and the second power transmission electromagnetic clutch 61 is engaged to magnetically connect it to the clutch plate 31 on the right side of the figure, thereby causing rotation in the opposite direction.

In this way, the electromagnetic clutch 50 for autorotation is operated to rotate the rotating body 20, and the electromagnetic clutch 60.6 for both power transmission is operated.
1 in sequence, it is possible to adjust the proper position by applying forward and reverse rotation to the operating shaft 30.

In addition, in the case where the operating shaft 30 that actually performs the operation is the operating shaft 30 located at the upper part, and the rotational force in the positive direction is transmitted to this operating shaft 30 via the first power transmission electromagnetic clutch 60, first, The motor 40 is rotated with the autorotation electromagnetic clutch 50 engaged and the first power transmission electromagnetic clutch 60 and the second power transmission electromagnetic clutch 61 disengaged, and the rotational force of the motor 40 is transferred to the autorotation electromagnetic clutch. Through the pinion gear 51, intermediate gear 22° rack gear 15
The rotational force 20 is sequentially transmitted to cause the rotating body 20 to rotate 90 degrees in the positive direction about the support shaft 21. Further, during this rotation, when the first power transmission electromagnetic clutch 60 is located upward and the stop ball 71 is located in the recess 70, the rotation electromagnetic clutch 50 is disengaged and the first power transmission electromagnetic clutch 60 is turned off. It is made to face the clutch plate 31 at the top of the drawing. When the electromagnetic clutch 50 for rotation is disengaged in this way, the motor 4
0, the pinion gear 51 becomes free. At this time,
By engaging the first power transmission electromagnetic clutch 60, the first power transmission electromagnetic clutch 60 and the clutch plate 31 at the upper side of the figure are magnetically coupled, and the rotational force of the motor 40 is transferred to the clutch plate 31 at the upper side of the figure. The transmission is performed as rotation in the forward direction.

When the motor 40 is rotated in such a state, the motor 4
The rotational force of 0 is transmitted as a rotational force in the positive direction to the operating shaft 30 at the upper side of the drawing via the first power transmission electromagnetic clutch 60 and the clutch plate 31.

Of course, when transmitting rotational force in the opposite direction to the operating shaft 30 located at the top via the second power transmission electromagnetic clutch 61,
After the rotating body 20 is rotated 270 degrees from the initial position and the second power transmission electromagnetic clutch 61 is opposed to the upper clutch plate 31, the second power transmission electromagnetic clutch 61 is engaged to rotate the second power transmission electromagnetic clutch 61 in the reverse direction. The rotational force is transmitted to the operating shaft 30.

Also, when transmitting the rotational force of the motor 40 to the other clutch plate 31 shown in FIG. This can be easily done by magnetically connecting the two power transmission electromagnetic clutches 61 and the clutch plate 31 at a predetermined position.

In this embodiment, a single unidirectional rotating motor 40 and two power transmission electromagnetic clutches 60 are mounted on one rotating body 20.
By fixing 61, it becomes possible to transmit rotational force from a single motor 40 to eight sets of working shafts 30, each of which performs a different action, regardless of whether it is in the forward or reverse direction.

Furthermore, in this embodiment, since the rotating body 20 is rotated by the electromagnetic clutch 50 for autorotation, a separate power source for rotating the rotating body 20 is not required.

Next, a case will be described in which a motor 40 capable of forward and reverse rotation is used as the motor 40.

At this time, the first power transmission electromagnetic clutch 60 or the second power transmission electromagnetic clutch 61 is opposed to a predetermined clutch plate 31, and either or both of the power transmission electromagnetic clutches 60, 61 are engaged and the clutch By simply magnetically connecting with the plate 31, forward rotation or reverse rotation can be transmitted to the working shaft 30 as desired by simply determining whether the motor 40 rotates in the forward or reverse direction.

Therefore, there is no need to rotate the rotating body 20 in order to transmit forward rotation and reverse rotation to the same clutch plate 31.
Adjustments can be made in a short time.

Furthermore, the rotating body 20 rotates in opposite directions when the motor 40 rotates in the forward direction and when it rotates in the reverse direction.

Therefore, by selecting the rotation direction of the motor 40 when rotating the rotating body 20, either of the power transmission electromagnetic clutches 60.
At most, a rotation angle of 90 degrees is sufficient for positioning 1, and adjustments can be made in a shorter time.

In the above description, the rotational force is transmitted between the rack gear 15 and the pinion gear 51 via the intermediate gear 22, but the intermediate gear 22 may be omitted.

Further, although the embodiment shows a case in which eight clutch plates 31 are arranged at equal pitches, the pitch, number, etc. can be selected as appropriate.

Further, as the dual power transmission electromagnetic clutches 60 and 61, a dog clutch in which one clutch piece engages with the other clutch piece by an electromagnetic solenoid can also be used.
A non-contact electromagnetic clutch, which is a type of friction clutch, can also be used.

In this way, when a non-contact electromagnetic clutch is used as the power transmission electromagnetic clutch 60, 61, when an overload is applied to the operating shaft 30, such as when a foreign object is caught in the moving rail of a chair and the chair cannot be moved. Since the power transmission electromagnetic clutches 60 and 61 slip, no overload is transmitted to the motor 40. Therefore, damage to the motor 40 due to external causes does not occur.

Moreover, this also applies to the electromagnetic clutch 50 for autorotation.

Furthermore, it is desirable that the front power transmission electromagnetic clutches 60, 61 and the clutch plate 31 have the same axis since they transmit rotational force between them.

To do this, it is sufficient to stop the rotation of the rotating body 20 at a position where the axes of the front power transmission electromagnetic clutch 60, 61 and the clutch plate 31 are the same, but if it is technically difficult, For example, in the contact surfaces between the power transmission electromagnetic clutch 60.61 and the clutch plate 31, one side is formed into a convex tapered shape and the other is formed into a concave taper shape, and when the power transmission electromagnetic clutch 60.61 is engaged, the shaft is closed. They can also be formed so that their hearts are the same.

Furthermore, although the rotating body 20 is shown as a disk in the illustrated example, it can be formed in other shapes, or even in the shape of a frame. In short, the rotating body 20 only needs to be rotatable with the motor 40 fixed.

Furthermore, although the output shaft 41 in the illustrated example is shown as the rotating shaft itself of the motor 40, the output shaft in the present invention includes:
It also includes the output shaft of the reduction gear when a reduction motor is used.

[Effects of the Invention] As explained above, the present invention has two advantages in order to cope with the increase in gravity and the expansion of space due to the increase in the number of motors.
An electromagnetic clutch for rotation and an electromagnetic clutch for power transmission are attached to one output shaft of a single motor having two output shafts, and an electromagnetic clutch for power transmission is attached to the other output shaft.

By selecting a clutch plate to which rotational force should be transmitted by operating an electromagnetic clutch for rotation, and by forming a configuration in which rotational force can be transmitted to the selected clutch plate by operating an electromagnetic clutch for power transmission, a single motor can be generated. It is possible to perform multiple operations using two types of electromagnetic clutches.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is taken along line A-A in FIG.
FIG. 10...Base frame 11...Surrounding plate 12...
Top plate 13...Bottom plate 14...Support hole
15...Rack gear 16...Terminal
20... Rotating body 21... Support shaft 22.
...Intermediate gear 30...Action shaft 31...Clutch plate 40...Motor 41...First output shaft 42...Second output shaft 50...Electromagnetic clutch for rotation 50 51... Pinion gear 60...first power transmission electromagnetic clutch 61...second
Power transmission electromagnetic clutch 70... recess 7
1...Stop method 72...Spring

Claims (1)

[Claims] 1. A motor with an electromagnetic clutch for rotation and a first electromagnetic clutch for power transmission connected to one output shaft and a second electromagnetic clutch for power transmission connected to the other output shaft is mounted on a rotating body. A ring-shaped gear is arranged at the bottom of this rotating body, and a gear that meshes with the gear is fixed to the electromagnetic clutch for rotation, and a gear that meshes with the gear is fixed to the electromagnetic clutch for rotation. A power transmission device for an automobile, characterized in that a clutch plate is arranged at each opposing position of an electromagnetic clutch for power transmission when rotation of a rotating body is stopped. 2. The power transmission device for an automobile according to claim 1, wherein the two output shafts are arranged on the same axis. 3. The power transmission device for an automobile according to claim 1 or 2, wherein the motor is a unidirectional rotating motor. 4. The power transmission device for an automobile according to claim 1 or 2, wherein the motor is a forward and reverse rotating motor.