JP2001241470A - Generator-motor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a generator-motor usable as an engine starter and a drive assist device, and capable of using an existing power train with a simple and compact structure. SOLUTION: A first shaft 2 of a clutch means 4 is connected to a shaft for an engine and a second shaft 3 is connected to a shaft of a transmission. The clutch means 4 is of a multiple-disk type and has a structure having an electromagnetic clutch 14, at least, in a part. A unit housing 1 is connected to the engine or a block of the transmission and is provided with a stator 21 of a generator-motor 20 fixed to its internal circumferential face. A rotor 22 of the generator-motor 20 is fixedly installed on the outer circumferential face of a clutch case 9 connected to the second shaft 3. The generator-motor 20 and the clutch means are controlled according to the driving state of a vehicle so as to provide them with a plurality of functions. The unit itself can be thus formed compact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator / motor unit which is interposed in a power transmission section between an engine and a transmission to allow a generator motor to function as a power assist device, a regenerative device, or the like in accordance with a vehicle operating condition. About.

[0002]

2. Description of the Related Art In recent years, it has been desired to improve fuel efficiency of automobiles in consideration of environment and limited resources. As a technique for improving the fuel efficiency, a technique has been proposed in which a generator motor is provided in a driving force transmission system of an engine, for example, regeneration for extracting running energy as electric power, or assisting engine torque by output torque of the motor.

[0003] For example, Japanese Patent Application Laid-Open No.
The one described in JP-A-225058 is known.

This technique is a technique called a so-called hybrid car. This technique is based on an engine, an assist motor arranged with its axis facing the engine, and an engine arranged between the engine and the assist motor. And a clutch motor for connecting and disconnecting the shafts, and by appropriately controlling these in accordance with the operating state of the vehicle, it becomes possible to efficiently generate running energy, generate power during running, and regenerate during braking, etc. ing.

[0005]

However, in this prior art, since the configuration of the existing engine is completely different from that of the power train having the transmission, the existing power train can be used as it is or the existing production line can be used. There is a problem that they cannot be used and the production cost rises due to these factors.

Accordingly, the present invention is to provide a generator motor unit that can be used as an engine starter, an alternator, a drive assist device, a regenerative device, and the like with a simple and compact structure that can use an existing power train. It is.

[0007]

Means for Solving the Problems As means for solving the above-mentioned problems, the invention according to claim 1 is interposed in a power transmission section between an engine and a transmission, and according to the driving state of the vehicle. An electric generator unit that functions as an engine starter, an alternator, a drive assist device, a regenerative device, etc., wherein one rotating element is coupled to the output shaft side of the engine and the other rotating element is coupled to the input shaft side of the transmission. A clutch means for connecting / disconnecting the power transmission between the engine and the transmission by detaching / attaching the clutch plate and having an electromagnetic clutch at least in part; and surrounding the clutch means integrally connected to the engine or the transmission. And a stator mounted on an inner peripheral surface of the unit housing, and a rotor facing the stator is provided with the clutch means. Radially outwardly while it is arranged coaxially, and a configuration including a generator motor that are linked to the rotation element of one.

In the case of the present invention, when the engine is started, the generator motor is made to function as an electric motor. At this time, if the rotor of the generator motor is linked to the rotating element of the clutch means on the transmission side, the clutch means is used. By coupling the engine side and the transmission side, the driving torque of the generator motor is transmitted to the engine, and the engine is started. At this time, an electromagnetic clutch is employed at least in part in the clutch means,
The driving torque is immediately transmitted from the generator motor to the engine. Further, when the rotor of the generator motor is linked to the rotating element on the engine side of the clutch means, the drive torque of the generator motor is reduced even when the connection of the rotating element on the engine side and the transmission side is cut off by the clutch means. The power is transmitted to the engine and the engine is started.

Further, if the generator motor functions as a generator during normal traveling in which the power of the engine is transmitted to the transmission, the generator motor can be used as an alternator. I can assist you.

In the case where regeneration is performed during running of the vehicle, if the rotor of the generator motor is linked to the rotating element of the clutch means on the transmission side, the clutch means connects the engine side and the transmission side. By causing the generator motor to function as a generator while being cut off, all the torque input from the transmission can be regenerated by the generator motor.

According to a second aspect of the present invention, the clutch means is a multi-plate type. Therefore, although the number of clutch plates increases, the diameter of each clutch plate can be reduced accordingly.

According to a third aspect of the present invention, the clutch means can be operated in parallel with the hydraulic clutch which presses the clutch surfaces of the two rotating elements with each other by hydraulic pressure, and between the two rotating elements. And an electromagnetic clutch that is disposed and presses the clutch surfaces of the two rotating elements against each other with an electromagnetic force.

In the case of the present invention, an electromagnetic clutch is used under conditions where the operating oil pressure does not sufficiently rise, such as when starting the engine, and only under a condition where a large fastening force is required, such as during acceleration running, only the hydraulic clutch, or Use both a hydraulic clutch and an electromagnetic clutch.

According to a fourth aspect of the present invention, the clutch surfaces of the hydraulic clutch and the electromagnetic clutch are shared. Therefore, the number of clutch plates used is reduced, and the structure is simplified.

According to a fifth aspect of the present invention, a torsional damper and an elastic plate for absorbing bending vibration are interposed in a rotating element on the engine side of the clutch means. Therefore, the torsional vibration and the bending vibration input from the engine to the clutch means are absorbed by the torsional damper and the elastic plate, and the fluctuation of the rotor of the generator motor is reduced, and the distance between the stator and the rotor can be reduced accordingly. Will be possible.

According to a sixth aspect of the present invention, the torsional damper is disposed radially inside the rotor of the generator motor together with the clutch means. Therefore, the whole is made compact as compared with the case where the torsional dampers are arranged side by side at one end in the axial direction of the rotor.

According to a seventh aspect of the present invention, two chambers partitioned by a partition wall in a liquid-tight manner are provided radially inside the rotor of the generator motor, and a hydraulic clutch is provided in one chamber and a dry clutch is provided in the other chamber. Electromagnetic clutches were arranged respectively. Therefore,
Since the room in which the hydraulic clutch is disposed and the room in which the electromagnetic clutch is disposed are separated by a partition wall in a liquid-tight manner, the hydraulic oil of the hydraulic clutch does not flow around the electromagnetic clutch.
Therefore, the operation of the electromagnetic clutch is not hindered by the hydraulic oil.

According to the present invention, the torque fluctuation is absorbed by the slip control of the clutch means and the motor control of the generator motor. According to the present invention, the torsional damper can be eliminated.

According to a ninth aspect of the present invention, the clutch means is fixed to a unit housing and a clutch plate engaged with an engine-side rotating element and a clutch plate engaged with a transmission-side rotating element. A pilot electromagnetic clutch that frictionally engages one of the rotating element on the engine side and the transmission side with the third rotating element by exciting the electromagnetic solenoid, and converts the rotating torque of the third rotating element into an axial pressing force. And a control cam that presses the clutch plate by the pressing force.

In the case of the present invention, when connecting the engine side rotating element and the transmission side rotating element, the electromagnetic torque of one of the rotating elements is transmitted to the third rotating element by exciting the electromagnetic solenoid of the pilot electromagnetic clutch. I do. When the third rotating element rotates to generate torque in the third rotating element, the torque is converted into an axial pressing force by the control cam, and the clutch plate and the transmission of the engine-side rotating element are converted by the pressing force. The clutch plate of the side rotation element is pressed. Therefore, the operating force of the electromagnetic clutch is amplified by the control cam, and the force strongly presses the clutch plates against each other.

According to a tenth aspect of the present invention, a planetary gear mechanism is provided in a unit housing, a sun gear of the planetary gear mechanism is coaxially coupled to an engine-side rotating element of a clutch means, and a ring gear of the gear mechanism is provided. Is coupled to the unit housing, and the carrier of the gear mechanism is connected to the transmission-side rotating element via the second clutch means for creep and start so as to be able to connect and disconnect the power, and the carrier in the axial direction is sandwiched by the planetary gear mechanism. While the pilot electromagnetic clutch and the control cam are arranged at one end, the clutch plate engaged with the engine-side rotating element and the transmission-side rotating element are engaged at the other end in the axial direction with the gear mechanism interposed therebetween. The planetary gear mechanism of the planetary gear mechanism is provided with a through hole, and a pressing force is applied to the clutch plate from the control cam in the through hole. The operating rod reaching inserted retractably.

In the case of the present invention, when the engine-side rotating element of the clutch means receives the engine power and rotates, the sun gear of the planetary gear mechanism rotates, and this rotation is reduced at a set ratio and transmitted to the carrier. Here, when the pilot clutch of the main clutch means is excited while the second clutch means is disconnected, an axial pressing force is generated on the control cam, and the pressing force is transmitted to the operating rod passing through the planetary gear. , The clutch plates of the main clutch means are pressed against each other. Thus, the rotation torque of the engine-side rotating element is transmitted to the transmission-side rotating element as it is through the clutch plate. Also,
Conversely, when the second clutch means is connected with the pilot electromagnetic clutch turned off, the rotation of the carrier is transmitted to the transmission-side rotating element through the second clutch means. Therefore, the rotation of the engine-side rotating element is reduced by the planetary gear mechanism and transmitted to the transmission-side rotating element. The deceleration of the engine rotation by the planetary gear mechanism is performed at the time of creep running or starting when the running at a very low speed is forced.

According to an eleventh aspect of the present invention, a rotatable ball is provided at a contact portion between the control rod and the clutch plate of the operating rod. Since the operation rod rotates integrally with the carrier, the rotation speed is usually different from that of the friction plate or control cam of the main clutch means. However, in the present invention, since the control cam and the clutch plate come into contact with each other via the ball provided on the operation rod, the frictional resistance at the contact portion is reduced.

According to a twelfth aspect of the present invention, the transmission-side rotating element is further divided into an engine-side first element and a transmission-side second element, and the first element is a second clutch means for creep. And a third clutch means interposed between the first element and the second element.

When the engine is started, the power is cut off from the transmission and the slip control for reducing the shift shock is performed by the third clutch means.

[0026]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a generator motor unit according to a first embodiment of the present invention. The generator motor unit is provided in a power transmission unit between an engine (not shown) and a transmission.

First, the schematic configuration of the generator / motor unit will be described. The unit is connected to a unit housing 1 connected to a block of an engine or a transmission and to an output shaft (not shown) of the engine. 1 axis 2,
Second shaft 3 connected to an input shaft (not shown) of the transmission
Between the first shaft 2 and the second shaft 3, a clutch means 4 for connecting and disconnecting power between the first shaft 2 and the second shaft 3; A generator motor 20 for transmitting and receiving power.

The first shaft 2 has one end connected to the output shaft of the engine, and the other end connected to the center shaft 6 of the clutch means 4 via the vibration absorbing means 5. The vibration absorbing means 5 includes an elastic plate 7 having high rigidity in the rotational direction and low rigidity in the bending direction for bending vibration absorption, and a well-known torsional damper 8. The eight outer plates 8a are integrally connected.
The inner periphery of the elastic plate 7 is connected to the other end of the first shaft 2, and the inner periphery of the inner plate 8 b of the torsion damper 8 is connected to the center shaft 6 of the clutch means 4. Therefore, when a torque is input to the first shaft 2 from the engine side, the torque is transmitted to the central shaft 6 via the elastic plate 7 and the torsion damper 8 in this order. It is absorbed by the torsional damper 8.

On the other hand, the second shaft 3 has one end connected to the input shaft of the transmission and the other end integrally connected to a bottomed cylindrical clutch case 9 of the clutch means 4 described later. The second shaft 3 is provided with a passage 10 that communicates the outer peripheral surface of the second shaft 3 with the inside of the clutch case 9, and a control oil pressure is introduced into the case 9 through the passage 10.

The clutch means 4 has a working chamber 12 formed by the clutch case 9 connected to the second shaft 3 and a cover 11 connected to the center shaft 6. Hydraulic clutch 13 and electromagnetic clutch 14
Are provided in parallel.

More specifically, splines 6a and 9a are formed on the outer peripheral surface of the center shaft 6 inserted into the working chamber 12 and the inner peripheral surface of the clutch case 9 opposed thereto, respectively.
A plurality of inner clutch plates 15 and a plurality of outer clutch plates 16 are engaged with these splines 6a and 9a, respectively. The inner clutch plates 15 and the outer clutch plates 16 are alternately arranged, and torque transmission between the center shaft 6 and the clutch case 9 is realized by pressing both of them.

An electromagnetic solenoid 17 is fixedly mounted on the cover 11 connected to the center shaft 6, and an armature 18 which is attracted by the excitation of the electromagnetic solenoid 17 is attached to an arbitrary inner clutch plate 15. However, the inner clutch plate 1 with the armature 18 attached
At least one outer clutch plate 16 is arranged between the electromagnetic solenoid 5 and the electromagnetic solenoid 17, and when the electromagnetic solenoid 17 is excited, some of the clutch plates 15a, 16a are frictionally connected. The electromagnetic clutch 14 is constituted by a part of the clutch plates 15a and 16a, an electromagnetic solenoid 17, and an armature 18. Since the electromagnetic solenoid 17 is attached to the cover 11 which rotates integrally with the center shaft 6, the solenoid 17 is energized through a slip ring (not shown).

Also, all the clutch plates 15... 15a,
16a receive a pressing force by the control oil pressure introduced from the passage 10 into the working chamber 12, and function as a hydraulic clutch 13. Therefore, some of the clutch plates 15a and 16a are shared by both the hydraulic clutch 13 and the electromagnetic clutch 14.

The generator motor 20 includes the unit housing 1
And a rotor 22 attached to the outer peripheral surface of the clutch case 9. The control unit 23 controls the electric system and the clutch means 4 to generate a generator. And the function as an electric motor can be appropriately switched.

As shown in the block diagram of FIG. 2, the control unit 23 is connected to an ignition switch S1, and a vehicle speed sensor S2 and a brake sensor S
3. Accelerator opening sensor S4, AT position sensor S
5. Sensor signals are respectively input from a voltmeter S6, an engine speed sensor S7, etc., and various calculations are performed based on these input signals. Control signals are output to the clutch 13 and the generator motor 20, respectively.

Here, the electric power generating unit is provided with electromagnetic and hydraulic clutches 14 and 13 according to the running state of the vehicle.
And the generator motor 20 as appropriate, it functions as a starter motor, a drive assist device, an alternator, a regenerative device, and the like.
It is determined based on the signals from S7. As typical examples of the driving state of the vehicle, four types of states are determined: an engine starting state, a normal driving state requiring driving assistance, a normal driving state in which battery power is insufficient, and a deceleration driving state.

The operation of the generator motor unit in these four operation states will be described below.

<Engine Start State> At the time of engine start, the electromagnetic motor 14 side of the clutch means 4 is first turned on by the control of the control unit 23, and in this state the generator motor 20 starts as a motor (starter motor). Is done. At this time, the first
As a result of the shaft 2 and the second shaft 3 being connected via the electromagnetic clutch 14, the generator motor 20 is connected to the output shaft of the engine via the first shaft 2, and the power of the generator motor 20 is transmitted to the engine and Is contributed to the start of

When the vehicle starts moving from this state, the hydraulic clutch 13 of the clutch means 4 is turned on by the control of the control unit 23, and the power of the engine is transmitted to the drive wheels by the operation of the transmission. You. At the start of the engine, operation responsiveness is required.
The first shaft 2 and the second shaft 3 are further connected by the hydraulic clutch 13 because a large torque transmission is required when the vehicle starts moving.

The engine can be started not only from a so-called parking state in which the shift lever is put in the parking range, but also from a so-called idle stop state in which the shift lever is in the drive range. However, at this time, the transmission side is automatically switched from the drive range to the neutral range, and in that state, the above-described engine is started.

<Normal running state requiring drive assist> In the normal running state, the electric power generating unit
The power of the engine is transmitted to the transmission by only connecting the first shaft 2 and the second shaft 3 by only the hydraulic clutch 13 and the electromagnetic clutch 14, but at this time, sudden accelerator operation or the like is performed. When the transmission of a large driving torque is required, the generator motor 20 operates as a motor under the control of the control unit 23, and the power is applied to the second shaft 3 to function as a drive assist device.

<Normal running state where battery power is insufficient> If the battery power is insufficient in the normal running state,
The generator motor 20 operates as a generator under the control of the control unit 23, and stores the power of the engine and the driving wheels as electric energy in a battery. Therefore, at this time, the generator motor 20 functions as a normal alternator.

<Deceleration running state> When the vehicle is decelerated by depressing the brake pedal or the like, the generator motor unit is controlled by the control unit 23 to control the clutch means 4 (the hydraulic clutch 13 and the electromagnetic clutch 1).
4) is turned off, and the generator motor 20 is operated as a generator. Thereby, the first shaft 2 and the second shaft 2
The connection of the shaft 3 is disconnected, the power transmission from the drive wheels to the engine is cut off, and the power is exclusively input to the generator motor 20. As a result, energy accompanying the deceleration of the vehicle is efficiently regenerated to the battery.

As described above, the generator motor unit of this embodiment can function as a starter motor, a drive assist device, an alternator, a regenerative device and the like by controlling the clutch means 4 and the generator motor 20 according to the running state of the vehicle. However, this generator-motor unit has the advantage that these functions can be realized without making significant changes to existing power trains such as engines and transmissions. In other words, this power generation unit
Although the control system needs to be changed, the other components only need to be interposed between the existing engine and the transmission, so that the existing power train can be used as is, and the existing facilities for the power train are also used. Can be used. Therefore, the production cost can be significantly reduced by using this generator-motor unit.

Further, since the generator motor unit has a structure in which the clutch means 4 is arranged radially inside the rotor 22 of the generator motor 20, the axial length of the entire unit can be shortened. Further, the generator motor unit of this embodiment employs a multi-plate clutch in which a plurality of clutch plates 15 and 16 are arranged in the axial direction.
By reducing the outside diameter of the unit 16, the size of the entire unit in the radial direction can be reduced. Therefore, this generator-motor unit is excellent in mountability in a vehicle because the entire unit can be made compact by these.

Further, in the case of the generator motor unit, the hydraulic clutch 13 and the electromagnetic clutch 1 are used as the clutch means 4.
4 can be operated in parallel, so that the electromagnetic clutch 14 can be operated under the condition that the hydraulic pressure does not sufficiently rise, and the hydraulic clutch 13 can be used when transmission of a large driving torque is required.
You can use properly. In this unit, since the friction plates 15a and 16a of the electromagnetic clutch 14 are shared as a part of the friction plates 15 and 16 of the hydraulic clutch 13, this structure also reduces the axial length of the unit. Has contributed.

In the unit of this embodiment, the elastic plate 7 for absorbing bending vibration and the torsional damper 8 are interposed between the center shaft 6 and the first shaft 2 of the clutch means 4, so that the bending vibration of the power transmission system is achieved. And the torsional vibration can be absorbed, and furthermore, the fluctuation of the rotor 22 of the generator motor 20 can be suppressed, so that the distance between the stator 21 and the rotor 22 can be sufficiently reduced without worrying about the interference between them. . Therefore, this also makes it possible to make the apparatus compact.

In the above description, the rotor 2 of the generator motor unit has been described.
The example in which the clutch 2 is connected to the transmission-side rotating element (second shaft 3) of the clutch means 4 has been described. However, the rotor 22 may be connected to the engine-side rotating element (first shaft 2). good. In this case, when functioning as an engine starter, the clutch means 4 is turned off, and when functioning as a regenerative device, the means 4 is turned on.

FIG. 3 is a sectional view showing a second embodiment of the present invention. In the following description of the embodiment, the same portions as those of the first embodiment are denoted by the same reference numerals, and the description of the overlapping portions will be omitted.

The generator / motor unit of this embodiment has substantially the same basic configuration as that shown in FIGS. 1 and 2 except that the arrangement of the torsional damper 28 in the unit housing 1 is different. That is, the torsion damper 28 of this unit is integrated with the elastic plate 7 and connected to the first shaft 2 and the center shaft 6 of the clutch means 4 as in the first embodiment. It is formed in a small diameter, and is disposed radially inside the rotor 22 of the generator motor 20 together with the clutch means 4.

Therefore, this generator / motor unit basically functions in the same manner as in the first embodiment, but the entire unit can be made more compact by disposing the torsional damper 8 further inside the rotor 22. There are advantages.

FIG. 4 is a sectional view showing a third embodiment of the present invention.

Although the generator motor unit of this embodiment has basically the same configuration as the above two embodiments, the torsion damper 8 as in the above embodiment is eliminated, and the generator motor 20 This embodiment differs from the above-described embodiment in that a room for disposing the hydraulic clutch 13 and a room for disposing the electromagnetic clutch 14 are provided radially inward of the rotor 22, and the two rooms are separated by a partition wall 29 in a liquid-tight manner.

More specifically, the clutch case 9 and the cover 11 constituting the clutch means 4 are respectively connected to the second shaft 3 and the center shaft 6 in the same manner as in the above-described embodiment. Has a plurality of inner clutch plates 15 and a plurality of outer clutch plates 16 engaged with each other. The elastic plate 7 for bending vibration absorption whose center side is coupled to the first shaft 2 is directly coupled to the outer peripheral edge of the cover 11 without using torsional dampers 8 and 28.

A partition wall 29 is provided at a substantially axially intermediate position of a space surrounded by the clutch case 9 and the cover 11, and the space is liquid-tightly partitioned into two chambers by the partition wall 29. . A predetermined number of the inner clutch plates 15 and the outer clutch plates 16 are distributed to the two chambers thus partitioned, and one of the chambers on the side of the second shaft 3 is controlled through a passage 10 of the same axis 3 to control hydraulic pressure. Is introduced, and a hydraulic clutch 13 is formed inside the room. On the other hand, in the room on the first shaft 2 side, in addition to the clutch plates 15 and 16, an electromagnetic solenoid 17 and an armature 18 are arranged.
Thereby, the electromagnetic clutch 14 is configured. still,
Hydraulic oil is not introduced into the room on which the electromagnetic clutch 14 is formed, and the components are always exposed to the gas atmosphere.

Accordingly, since the hydraulic oil does not flow around the clutch plates 15 and 16 in the electromagnetic clutch 14, the first shaft 2 and the second shaft 3 can be connected with good responsiveness when the engine is started. .

The generator motor unit functions as an engine starter, a power assist device, an alternator, a regenerative device and the like according to the running state of the vehicle by the same control as in the first embodiment. It also functions as a vibration absorber that absorbs torsional vibration of the transmission system.

That is, when the generator motor unit functions as a vibration absorbing device, slip control of the electromagnetic clutch 14 and motor control of the generator motor 20 are performed by duty control in accordance with torsional vibration of the power transmission system. I have.

Therefore, in the case of this generator / motor unit, the dedicated torsional dampers 8 and 28 as in the above embodiment can be eliminated, and the whole unit can be made more compact.

Next, a fourth embodiment of the present invention shown in FIG. 5 will be described.

The generator motor unit of this embodiment has a point that the stator 21 of the generator motor 20 is mounted on the inner peripheral surface of the unit housing 1 and that the clutch means 4 is disposed radially inside the rotor 22 of the generator motor 20. The basic configuration of the first embodiment is that the first shaft 1 and the center shaft 6 of the clutch means 4 are connected via the elastic plate 7 of the vibration absorbing means 5 and the torsional damper 8. Although it is almost the same as the first embodiment, the specific configuration of the clutch means 4 for connecting and disconnecting the first shaft 2 and the second shaft 3 is greatly different. The following description focuses on this difference.

The central shaft 6 of the clutch means 4 extends to near the connection between the second shaft 3 and the clutch case 30.
A small-diameter portion 3a of the second shaft 3 is rotatably inserted into the distal end. Splines are provided on the outer peripheral surface on the distal end side of the center shaft 6 and the inner peripheral surface on the proximal end side of the clutch case 30 opposed thereto. An inner clutch plate 31 and an outer clutch plate 32 are respectively provided on these splines. A plurality of sheets are engaged. The inner clutch plate 31 and the outer clutch plate 32
Are alternately arranged so that they are frictionally engaged with each other by applying a pressing force from the outside.

The unit housing 1 has a side wall 1 extending in the direction of the central axis 6 from the end of the outer peripheral wall on the first shaft side 2.
The electromagnetic solenoid 33 is fixedly installed at a position of the side wall 1a facing the inside of the clutch case 30. A portion surrounded by the side wall 1a of the unit housing 1, the clutch case 30, and the center shaft 6 is defined as a working chamber 34, in which working oil such as clutch oil and silicone oil is sealed.

A control cam 35 for generating an axial pressing force in accordance with the input torque is arranged at a substantially intermediate position between the clutch plate accommodating portion in the working chamber 34 and the installation position of the electromagnetic solenoid 33. . The control cam 35 includes the unit housing 1 and the clutch case 3.
A first cam ring 36 (also serving as a third rotating element in the invention according to the ninth aspect) arranged rotatably with respect to the center shaft 6 and the like and with its axial displacement restricted. A second cam ring 37 fitted to the shaft 2 so as to be slidable in the axial direction and with relative rotation restricted, and a first cam ring 3
6 and a cam groove 3 formed on the facing surface of the second cam ring 37
6a and 37a.

When a torque is generated between the first cam ring 36 and the second cam ring 37, the control cam 35 causes the ball 38 to ride on the inclined surfaces of the cam grooves 36a and 37a in accordance with the torque, and as a result, the first cam ring 36 and the second cam ring 37 are pushed apart in the axial direction. Therefore, the control cam 35 applies the torque generated between the first and second cam rings 36, 37 to the cam grooves 36a, 37a.
Amplification is performed at a magnification corresponding to the inclination of the shaft, and can be converted into an axial pressing force. The second cam ring 37 faces the outer clutch plate 32 at the end, so that the clutch plates 31 and 32 can be pressed against each other by the pressing force in the axial direction.

Further, splines are provided on the outer peripheral surface of the first cam ring 36 and the inner peripheral surface on the tip end side of the clutch case 30 facing the first cam ring 36, and a plurality of mini clutch plates 39 and 40 are provided on each of these splines. Are engaged.
The mini clutch plates 39 and 40 are connected to the first cam ring 36.
And the clutch engaged with the clutch case 30 are alternately arranged. The electromagnetic clutch 33 is provided on the mini clutch plate 39 located closest to the second cam ring 37. Armature (not shown) is attached. The electromagnetic solenoid 33 and the armature together with the mini clutch plates 39 and 40 constitute a pilot electromagnetic clutch 41.

The clutch means 4 is different from the above-described other embodiments in that the two types of clutches, the electromagnetic clutch and the hydraulic clutch, are not switched in accordance with the operation state, but the duty control of the pilot electromagnetic clutch 41 is performed. Thus, an on / off operation and a pressing force operation on the clutch plate are performed.

Next, the operation of the clutch means 4 will be described. When the electromagnetic solenoid 33 of the pilot electromagnetic clutch 41 is not excited, the adjacent mini clutch plates 39 and 40 are separated from each other. First cam ring 36 and second cam ring 3
7, no torque is generated and the main clutch plates 31,
The pressing force of the control cam 35 does not act on 32. For this reason, the clutch plates 31 and 32 are separated from each other, and the connection between the first shaft 2 and the second shaft 3 is cut off.

Then, from this state, the electromagnetic solenoid 33
Is excited and the armature is attracted, the adjacent mini clutch plates 39 and 40 are pressed against each other, and a torque is generated between the first cam ring 36 and the second cam ring 37 of the control cam 35. This torque is amplified by the control cam 35 and converted into an axial pressing force, and the main clutch plates 31 and 32 are pressed by this force. As a result, the first shaft 2 and the second shaft 3 are connected.
Therefore, the power of the generator motor 20 is transmitted to the engine when the engine is started, and the torque of the engine is transmitted to the transmission at the time of starting or normal running. At this time, the rotation ratio of the first shaft 2 and the second shaft 3 is controlled by adjusting the pressing force of the main clutch plates 31 and 32 by the duty control of the electromagnetic solenoid 33.

As described above, the generator motor unit amplifies the torque generated by the operation of the pilot electromagnetic clutch 41 and converts the torque into the pressing force of the clutch plates 31 and 32. The shaft 2 and the second shaft 3 can be connected to each other, and the first and second shafts 2 and 2 can be used even when a large friction torque is required such as when the vehicle starts or accelerates due to the amplification effect of the control cam 35.
Power can be reliably transmitted between the three.

Since the electromagnetic solenoid 33 of the pilot electromagnetic clutch 41 is fixedly installed on the unit housing 1, there is no need to use a slip ring for energization, and the structure can be simplified accordingly. The durability of the device can also be increased. In addition, since this generator-motor unit does not use a hydraulic clutch for introducing a control oil pressure from the outside, the piping structure can be simplified and the device can be made more compact.

Next, a fifth embodiment of the present invention shown in FIGS. 6 and 7 will be described.

The generator motor unit of this embodiment is similar to that shown in FIG.
This is an improvement based on that of the fourth embodiment shown in FIG. 2. In brief, the outline of the fourth embodiment is that the input rotation from the engine during creep running or starting is applied to the unit of the fourth embodiment. It can be said that the function to decelerate was added. The mechanism for reduction is a planetary gear mechanism 50.
The main clutch means 4 and the newly added second clutch means 51 are used for switching (see FIG. 7).

Hereinafter, a specific configuration of the power generation unit will be described.

As shown in FIG. 6, the first shaft 2 on the engine side
Is connected to the central shaft 6 of the clutch means 4 via an elastic plate 7 for absorbing bending vibration and a torsional damper 8, and the bottomed cylindrical clutch case 30A of the clutch means 4 is connected to the second shaft 3 on the transmission side. Are linked. The central shaft 6 extends to a position near the connecting portion of the second shaft 3 with the clutch case 30A, and the small diameter portion 3a of the second shaft 3 is inserted into the distal end surface thereof. The center shaft 6 and the clutch case 30A are rotatably housed in a unit housing 53 connected to the block on the engine side.

The sun gear 54 of the planetary gear mechanism 50 is coaxially connected to a substantially intermediate position in the axial direction of the center shaft 6, and the ring gear 55 of the planetary gear mechanism 50 extends from the side wall 53 a of the unit housing 53 near the engine. It is connected to an extended cylindrical wall 56. A bush 58 having a through hole 58 a is provided at the axial center of each planetary gear 57 of the planetary gear mechanism 50, and a first carrier plate 59 and a second carrier plate 60 are provided at both ends of the bush 58. Each is joined. Therefore, the planetary gear mechanism 50 controls the rotation of the sun gear 54 by the first and second gears.
The carrier plates 59 and 60 rotate at a constant rotation ratio. In this case, the rotation ratio is set to about 1/2.

A pilot electromagnetic clutch 41 and a control cam 35 are provided on the engine side with the planetary gear mechanism 50 interposed therebetween, and a plurality of inner clutch plates are provided on the transmission side with the gear mechanism 50 interposed therebetween. 31 and an outer clutch plate 32 are arranged. The pilot electromagnetic clutch 41 and the control cam 35 have substantially the same configuration as those of the fourth embodiment, but the spline engagement of the radially outer mini clutch plate 40 is different from that of the fourth embodiment. , A second carrier plate 60.
However, also in this case, the mini-clutch plate 3 is driven by the excitation of the electromagnetic solenoid 33 of the pilot electromagnetic clutch 41.
When the friction members 9 and 40 are frictionally engaged with each other, the first cam ring 36 and the second cam ring 37 are twisted by the friction torque at this time, and the torque is amplified to the pressing force in the axial direction as in the above-described embodiment. Is converted. Incidentally, also in this embodiment, the electromagnetic solenoid 33 is fixedly installed on the side wall 53a of the unit housing 53.

The inner clutch plate 31 and the outer clutch plate 32
Are engaged with the center shaft 6 and the spline of the clutch case 30, respectively, and are frictionally engaged with each other by receiving a pressing force from the outside similarly to the above-described embodiment, whereby the center shaft 6 and the clutch case 30, ie, , The first shaft 2 and the second
Connect the shaft 3.

An operation rod 62 holding rotatable balls 61 at both ends is slidably inserted into the bush 58 of each planetary gear 57. The operating rod 62 transmits a pressing force from the control cam 35 to the clutch plates 31 and 32. The balls 61 held at both ends abut on the second cam ring 37 and the inner clutch plate 32 at the end. It has become. Therefore, when the control cam 35 generates an axial pressing force by operating the pilot electromagnetic clutch 41, the clutch plates 31, 32 are pressed against each other by the force, and the first shaft 2 and the second shaft 3 are connected. The duty of the electromagnetic solenoid 33 of the pilot electromagnetic clutch 41 is controlled by a control unit, and the slip control of the clutch plates 31 and 32 is enabled by the control.

On the other hand, the stator 21 of the generator motor 20 is fixedly installed on the inner peripheral surface of the unit housing 53, and the rotor 22 facing the stator 21 is rotatably supported on the cylindrical wall 56 of the unit housing 53 via the bearing 63. Have been. The rotor 22 is coupled to a first carrier plate 59 of the planetary gear mechanism 50, and is always rotated integrally with the plate 59. Therefore, the rotor 22 is connected to the first shaft 2 through the first carrier plate 59.

A cylindrical torque transmission ring 64 extends from an end of the rotor 22 near the transmission, and a second clutch means 51 is provided between the torque transmission ring 64 and the clutch case 30A. ing.

The second clutch means 51 has substantially the same basic structure as the above-mentioned main clutch means. The pilot electromagnetic clutch 41A and the control cam 35A are arranged at a position closer to the transmission, and the second clutch means 51 is arranged at a position closer to the rotor 22. A plurality of inner clutch plates 31A and outer clutch plates 32A spline-engaged with the clutch case 30A and the torque transmission ring 64, respectively, are arranged.

In the pilot electromagnetic clutch 41A, an electromagnetic solenoid 33A is fixedly installed on a side wall of the unit housing 53, and the electromagnetic solenoid 33A magnetically attracts an armature (not shown).
The mini clutch plates 39A and 40A, which are spline-engaged with the 6A and the torque transmission ring 64, respectively, are frictionally engaged. The second cam ring 37A of the control cam 35A abuts on the inner clutch plate 31A, and when a friction torque is generated by the mini clutch plates 39A and 40A, the pressing force obtained by the conversion and amplification by the control cam 35 is applied to the clutch plate. 31A and 32A.

Therefore, when the electromagnetic solenoid 33A is excited, the torque transmission ring 64 and the clutch case 30
A is connected by the second clutch means 51, so that the first shaft 2 and the second shaft 3 are connected by a path passing through the first carrier plate 59 of the planetary gear mechanism 50. still,
Also in the case of the electromagnetic solenoid 33A, duty control is performed by the control unit, and this control enables slip control of the clutch plates 31A and 32A.

Here, the electromagnetic solenoid 33 of the main clutch means 4 and the electromagnetic solenoid 33A of the second clutch means 41 are selectively switched by the control unit, but the electromagnetic solenoid 33A of the second clutch means 41 is turned on. Is performed only at the time of creep running and at the time of starting. Normally, control by the main clutch means 4 is performed.

That is, the second clutch means 51 is turned off during the operation other than during creep running and starting. For example, when the generator motor 20 functions as a starter when the engine is started, the main clutch means 4 is turned off. Then, the rotating element on the transmission side is separated. When the generator motor 20 functions as an alternator, a drive assist device, a regenerative device, or the like, the clutch means 4 is turned on and the first shaft 2 and the second shaft 3 are directly connected. That is, torque transmission between the engine E and the transmission T is performed through the path (a) in FIG.

During creep running or starting, the second clutch means 41 is turned on with the main clutch means 4 turned off. At this time, the driving torque of the engine E is shown in FIG. Of the planetary gear mechanism 50
As a result, the rotational speed is reduced to about a half and transmitted to the transmission T side. Therefore, by transmitting power through this route (b), the drive wheels can be rotated at a very low speed, and the torque converter can be eliminated. Incidentally, it is conceivable to cope with the slip control of the main clutch means 4 at the time of creep running or starting, but in this case, since the amount of slip at the clutch means 4 is large, there are problems such as heat generation and wear of the clutch surface. It is difficult to achieve.

The speed change due to the brake operation during creep running is dealt with by the slip control of the second clutch means 51.

As described above, in the generator motor unit of this embodiment, since the rotor 22 of the generator motor 20 is disposed radially outside the main clutch means 4, the unit housing is similar to that of the other embodiments. Although the outer diameter of 53 is small, the second clutch means 51 is further disposed at the outer peripheral position of the clutch case 30A protruding from the axial length of the generator motor 20, so that the device can be made more compact from this point as well. Has been realized.

Further, in the case of this generator / motor unit, the control cam 35 disposed in front and rear of the planetary gear mechanism 50 in the axial direction and the clutch plates 31 and 32 are linked by the operation rod 62 penetrating the planetary gear 57. The linking mechanism between the two occupies little space, and the compactness of the apparatus is realized from this point as well.

Finally, a sixth embodiment of the present invention shown in FIGS. 8 and 9 will be described.

[0093] The outline of this embodiment will be described first. The generator motor unit of this embodiment is based on the fifth embodiment shown in Figs. 6 and 7, and has a connection portion with a transmission. A third clutch means 70 capable of performing connection / disconnection and slip control of the power in the foreground is added, and the rotor 22 of the generator motor 20 is connected to the transmission-side rotating element instead of the engine-side rotating element. Things.

In the case of this generator / motor unit, the first shaft 2 is connected to the center shaft 6 of the main clutch means 4 via the elastic plate 7 and the torsion damper 8. 30A is rotatably disposed, and the outer periphery of the distal end portion of the central shaft 6 and the clutch case 3 opposed thereto
0A inner clutch plate 31 and outer clutch plate 3
2 are spline-engaged respectively, the sun gear 54 of the planetary gear mechanism 50 is coaxially coupled to a substantially intermediate position of the center shaft 6, and the ring gear 55 is fixed to the cylindrical wall 56 of the unit housing 53, The pilot electromagnetic clutch 41 and the control cam 35 are arranged between the planetary gear mechanism 50 and the side wall 53 a of the unit housing 53, and the second cam ring 37 is connected to the clutch plate 31 at the end via the operation rod 62 penetrating the planetary gear 57. The linked points are the same as in the fifth embodiment.
The same parts as those in the other fifth embodiment are designated by the same reference numerals, and detailed description is omitted.

In this unit, the second shaft 3 is not directly connected to the clutch case 30A, and both can rotate relative to each other. A bottomed cylindrical outer case 71 having an outer diameter slightly larger than that of the clutch case 30A is connected to the tip of the second shaft 3, and the inner peripheral surface of the outer case 71 is connected to the outer peripheral surface of the clutch case 30A. They face each other at a predetermined interval.

Further, the tip side of the clutch case 30A is
The diameter of the side wall 53a of the unit housing 53 is increased
The enlarged cylindrical portion 73 is disposed radially outside the cylindrical wall 56 of the unit housing 53. The generator motor 20 is mounted on the outer peripheral surface of the enlarged diameter cylindrical portion 73.
Are connected. The stator 21 of the generator motor 20 is fixedly installed on the inner peripheral surface of the unit housing 53 so as to face the outer peripheral surface of the rotor 22.

The cylindrical wall 5 of the unit housing 53
6, a torque transmission ring 74 is supported via a bearing 75, and the first carrier plate 59 of the planetary gear mechanism 50 is integrally connected to the torque transmission ring 74. Then, the inner peripheral surface of the enlarged diameter cylindrical portion 73 of the clutch case 30A and the torque transmission ring
4, a second clutch means 51 for creep and starting
Is provided. The second clutch means 51 connects and disconnects power between the torque transmission ring 74 and the clutch case 30A, and has a structure similar to that of the above-described embodiment.

On the other hand, the outer peripheral surface of the clutch case 30A on the base side and the outer case 71 integrated with the second shaft 3
The third clutch means 70 is provided between the first clutch and the third clutch. The third clutch means 70 has substantially the same basic configuration as the second clutch means 51, and includes an inner clutch plate 31B spline-engaged with the clutch case 30A and an outer clutch plate spline-engaged with the outer case 71. 32
B, a pilot electromagnetic clutch 41B for bringing the mini clutch plates 39B, 40B into frictional contact with each other by excitation of the electromagnetic solenoid 33B, and a control for amplifying and converting the friction torque input to the mini clutch plates 39B, 40B into an axial pressing force. And a cam 35B. The electromagnetic solenoid 33B is fixedly installed on a flange 76 extending from the unit housing 53. Further, since the third clutch means 70 is mainly used for slip control as described later, the clutch plates 31B and 32B have higher durability than those of the other clutch means 4 and 51. .

As shown in FIG. 9, the generator motor includes a path (a) connected from the first shaft 2 to the clutch case 30A through the center shaft 6 and the main clutch means 4, and
There is a path (b) leading from the shaft 2 to the clutch case 30A through the center shaft 6, the first carrier plate 59 of the planetary gear mechanism 50, and the second clutch means 51, and these paths (a) and (b) are The selection is switched by the control of the control unit. This (b)
This route is used only at the time of start and creep running as in the above-described embodiment. In addition, regardless of which of the routes (a) and (b) is selected, the transmission of power is always performed through the third clutch 70.

In this generator / motor unit, specifically, the clutch means 4, 51, and 70 are on-off controlled as shown in Table 1 below according to the driving state of the vehicle.

[0101]

[Table 1]

That is, when the engine is started, the first clutch 2 and the clutch case 30A are turned on by turning on the main clutch means 4 and turning off the second clutch means 51.
Are directly connected by the route (a), and the third clutch means 70 is turned off, so that the clutch case 3
0A is disconnected from the transmission. When the generator motor 20 is started as a motor from this state, the generator motor 20
Is transmitted to the engine, and the engine E is started by receiving this torque.

At the time of starting and creep running, the main clutch means 4 is turned off and the second clutch means 51 is turned on, so that the first shaft 2 and the clutch case 30A follow the path (b). The rotation of the engine E is reduced to about half by the planetary gear mechanism 50 and transmitted to the clutch case 30A. At this time, since the third clutch means 70 is turned on,
The decelerated drive torque of the engine E is transmitted to the transmission T side.

During normal traveling, the main clutch means 4 is turned on, the second clutch means 51 is turned off, and the third clutch means 70 is turned on. It is transmitted to the T side.

Further, during deceleration regeneration, the third clutch means 70 is turned on and the main clutch means 4
And the second clutch means 51 are turned off, and the power transmission between the clutch case 30A and the central shaft 6, that is, the rotor 22
Power transmission between the engine and the engine E is completely shut off. Therefore, at this time, all the energy input from the drive wheels through the transmission T is regenerated by the generator motor 20 without loss.

In this generator-motor unit, the power can be connected to and disconnected from the transmission side by the third clutch means 70 as described above. Therefore, when the engine is started from the drive range such as at idle stop. Also, there is no need to change the range on the transmission side, and the structure of the transmission can be simplified accordingly.

Further, this generator-motor unit is capable of applying a shock at the time of starting and deceleration and a so-called shift shock to the third clutch means 70.
And the motor control of the generator motor 20. Even if the third clutch means 70 is not provided, the other clutch means 4, 51
Can be performed by the slip control and the motor control of the generator motor 20, but this generator motor unit can be manufactured at low cost by providing the third clutch means 70 dedicated to slip control on the outer side of the unit. And

[0108]

As described above, the invention according to claim 1 is
It can be used as an engine starter, alternator, drive assist device, regenerative device, etc. by simply attaching it to the power transmission section between the engine and the transmission of the existing power train, and the shaft length of the device can be shortened .
Therefore, since the existing power train and the equipment for manufacturing the same can be used as they are, manufacturing can be performed at low cost, and since the apparatus can be made compact, the mountability on a vehicle is improved. Further, since the clutch means uses an electromagnetic clutch at least in part, it is possible to realize a highly responsive operation even at the time of starting the engine where the hydraulic pressure does not sufficiently rise.

According to the second aspect of the present invention, since the diameter per clutch plate can be reduced, the outer diameter of the entire device can be further reduced, and the mountability on a vehicle can be further improved. To play.

According to the third aspect of the present invention, it is possible to simultaneously use the electromagnetic clutch and the hydraulic clutch to simultaneously satisfy the demands of both the clutch connection requiring responsiveness and the clutch connection requiring press contact force. .

According to the fourth aspect of the present invention, the structure can be simplified by reducing the number of clutch plates to be used. Therefore, the cost can be further reduced by reducing the number of parts, and the apparatus can be made more compact. This has the effect that it can be achieved.

The invention described in claim 5 has a further effect that the fluctuation of the rotor of the generator motor can be reduced, so that the gap between the rotor and the stator can be narrowed and the outer diameter of the device can be further reduced.

According to the sixth aspect of the present invention, the torsional damper and the clutch means are arranged radially inside the rotor.
There is an additional effect that the entire device can be made more compact.

According to the seventh aspect of the present invention, since the hydraulic oil of the hydraulic clutch does not enter the electromagnetic clutch portion,
Further, there is an effect that the operation responsiveness of the electromagnetic clutch can always be maintained satisfactorily.

According to the eighth aspect of the present invention, the torsional vibration is absorbed by the slip control of the clutch means and the motor control of the generator motor, so that it is not necessary to provide a torsional damper separately from the clutch means and the generator motor. There is an additional effect that further compactness can be realized.

According to the ninth aspect of the present invention, since the operation of the pilot electromagnetic clutch can be amplified by the control cam and the clutch plates can be pressed against each other, it is possible to improve the responsiveness of the clutch operation and to secure a sufficient pressing force. A further effect is achieved that both can be achieved. Further, according to the present invention, the operation of the pilot electromagnetic clutch is amplified by the control cam and converted into an axial pressing force, so that the electromagnetic solenoid can be fixedly installed in the control unit and used as a result. There is an additional advantage that the slip ring for performing the operation can be completely eliminated.

According to a tenth aspect of the present invention, the operation of the main clutch means and the second clutch means directly transmits torque at a one-to-one speed ratio through the sun gear of the planetary gear, and transmits the torque through the carrier of the planetary gear. Since it is possible to switch the transmission of the torque at the reduced speed ratio, it is possible to transmit a further advantageous effect that the optimal low-speed rotation can be transmitted to the transmission during creep running or starting. Therefore, power loss due to heat generation and the like can be reduced and wear of the clutch means can be reduced as compared with the case where creep running or starting is performed only by slipping of the clutch means. In addition, the operating rod that penetrates the planetary gear allows the control cam and the clutch plate arranged in front and rear in the axial direction of the planetary gear mechanism to be linked with each other. It can be housed inside and the device can be made more compact.

According to the eleventh aspect of the present invention, since the contact resistance of the operating rod with respect to the control cam and the clutch plate can be reduced, the friction loss when operating the operating rod is further reduced to obtain a smooth operation. This has the effect that it can be performed.

According to the twelfth aspect of the present invention, since the power can be connected and disconnected with the transmission by operating the third clutch means, the engine can be started without performing the range operation on the transmission. Further, by allowing only the third clutch means to perform the slip control, the other clutch means can be simplified and the production cost can be further reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing the embodiment.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a sectional view showing a third embodiment of the present invention.

FIG. 5 is a sectional view showing a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a fifth embodiment of the present invention.

FIG. 7 is a schematic view showing the embodiment.

FIG. 8 is a sectional view showing a sixth embodiment of the present invention.

FIG. 9 is a schematic view showing the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 53 ... Unit housing 4 ... Clutch means 7 ... Elastic plate 8 ... Torsion damper 13 ... Hydraulic clutch 14 ... Electromagnetic clutch 20 ... Generator motor 21 ... Stator 22 ... Rotor 30, 30A ... Clutch case 31, 32 ... Clutch plate 33 ... Electromagnetic solenoid 35 Control cam 36 First cam ring (third rotating element) 41 Pilot electromagnetic clutch 50 Planetary gear mechanism 51 Second clutch means 54 Sun gear 55 Ring gear 59 First carrier plate 61 Ball 62 ... Operating rod 70 ... Third clutch means

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Toshiaki Hori 1370 Onna, Atsugi-shi, Kanagawa F-term in Unisia Gex Co., Ltd. (Reference) GB21 GB22 GB36 GC11 GC12 GE07 HH01 HH03 JJ01 5H115 PC06 PG04 PI16 PI29 PO02 PU01 PU19 PU22 PU23 PU25 PU29 QI04 QN03 SE04 SE05 SE09 TB01 TE02 TI05 TO21 TO23 TO30

Claims (12)

[Claims] 1. A power generation unit that is interposed in a power transmission unit between an engine and a transmission and functions as an engine starter, an alternator, a drive assist device, a regenerative device, or the like according to a driving state of a vehicle. Are connected to the output shaft side of the engine, and the other rotation element is connected to the input shaft side of the transmission, respectively. A clutch unit having an electromagnetic clutch, a unit housing integrally connected to an engine or a transmission, and surrounding a periphery of the clutch unit; and a stator mounted on an inner peripheral surface of the unit housing, and a rotor facing the stator. A coaxially disposed radially outside of the clutch means, and a generator motor linked to one of the rotating elements; Dynamoelectric unit, characterized in that it includes. 2. The generator-motor-driven unit according to claim 1, wherein said clutch means is a multi-plate type. 3. A hydraulic clutch, wherein said clutch means is disposed between said two rotating elements so as to be able to operate in parallel with said hydraulic clutch. 3. The electric motor-driven unit according to claim 1, further comprising an electromagnetic clutch configured to press the clutch surfaces of the rotating elements with each other by electromagnetic force. 4. A power generation unit according to claim 3, wherein a clutch surface of the hydraulic clutch and a clutch surface of the electromagnetic clutch are shared. 5. The generator-motor unit according to claim 1, wherein a torsional damper and an elastic plate for absorbing bending vibration are interposed in a rotating element on the engine side of said clutch means. 6. The generator motor unit according to claim 5, wherein the torsional damper is disposed radially inside the rotor of the generator motor together with the clutch means. 7. Two chambers which are liquid-tightly partitioned by a partition wall are provided radially inside the rotor of the generator motor, and a hydraulic clutch is disposed in one chamber and a dry electromagnetic clutch is disposed in the other chamber. The electric generator unit according to any one of claims 3, 5 and 6, wherein: 8. The generator motor unit according to claim 1, wherein torque fluctuations are absorbed by slip control of the clutch means and motor control of the generator motor. 9. An engine-side clutch is provided by exciting the clutch means with a clutch plate engaged with an engine-side rotating element and a clutch plate engaged with a transmission-side rotating element and an electromagnetic solenoid fixed to a unit housing. A pilot electromagnetic clutch for frictionally engaging one of the rotating elements on the transmission side and a third rotating element, and converting the rotational torque of the third rotating element into an axial pressing force, and using the pressing force to convert the clutch into a clutch. The power generation unit according to claim 1 or 2, further comprising a control cam for pressing the plate. 10. A planetary gear mechanism is provided in a unit housing, a sun gear of the planetary gear mechanism is coaxially coupled to an engine-side rotating element of a clutch means, and a ring gear of the gear mechanism is coupled to the unit housing; The carrier of the gear mechanism is connected to the transmission-side rotating element via a second clutch means for creeping and starting so as to be able to connect and disconnect the power, and the pilot electromagnetic clutch is provided at one axial end of the planetary gear mechanism. On the other hand, the clutch plate engaged with the engine-side rotating element and the clutch plate engaged with the transmission-side rotating element are arranged at the other axial end of the gear mechanism. , A through hole is provided in the planetary gear of the planetary gear mechanism, and in this through hole,
The power generator unit according to claim 9, wherein an operation rod for transmitting a pressing force from the control cam to the clutch plate is inserted to be able to move forward and backward. 11. The motor-driven electric unit according to claim 10, wherein a rotatable ball is disposed at a contact portion of the operation rod with respect to the control cam and the clutch plate. 12. The transmission-side rotating element is further divided into a first element on the engine side and a second element on the transmission side,
The first element is connected to the carrier via a second clutch means for creep so that power can be connected and disconnected, and the first element is connected to the first element.
The generator / motor unit according to claim 10 or 11, wherein a third clutch means is interposed between the element and the second element.