JP2001119898A - Driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a driver in which mountability onto a vehicle is enhanced by integrating an inverter case with a driver case. SOLUTION: The driver comprises a driver case 10 for encasing a motor, and an inverter case 46 for encasing an inverter, a fitering capacitor 55 and a controller secured to the top wall 49 of the driver case 10. Frame 47 of the inverter case 46 has a tubular body section 91 and at least one fixing part. The inverter is secured to the top wall 49 through a support 61 and the controller is secured to the fixing part. Consequently, a bracket for securing the controller to the barrier wall is not required. Since the fixing part is formed integrally with the body section 91 while directing inward, dimensions of the inverter case 46 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device.

[0002]

2. Description of the Related Art Conventionally, a vehicle, for example, a hybrid vehicle is provided with a driving device, and the driving device is provided with a driving motor, a generator motor, and an inverter device for driving the driving device. Then, in the inverter device, by driving the drive motor inverter formed by the bridge circuit, the DC current supplied from the battery is converted into three-phase currents, and the respective phase currents are supplied to the drive motor. Also, by driving a generator motor inverter formed by a bridge circuit, the three-phase current supplied from the generator motor is converted into a DC current, and the DC current is supplied to a battery. It has become.

To this end, a control device is provided, the control device generates a pulse width modulation signal, outputs the pulse width modulation signal to each of the bridge circuits, and switches a transistor of each of the bridge circuits. Like that.

When an inverter case accommodating the inverter device is integrated with the drive case accommodating the drive motor and the generator motor, a partition is formed at the upper end of the drive case, and the inverter is provided on the partition. By attaching a case, an inverter / control board housing chamber is formed, and the inverter / control board housing chamber houses the inverter for the drive motor inverter and the inverter for the generator motor inverter, a control board, and the like.

[0005]

However, in the conventional driving device, it is not only necessary to mount a driving motor inverter and a generator motor inverter on the partition, but also to provide a smoothing device above the power module. It is necessary to attach a bracket to arrange capacitors, control boards, and the like. Therefore, the size of the inverter case becomes large.

When the drive device is mounted on a hybrid vehicle, the drive device is inserted into an engine hood (bonnet) from below the hybrid vehicle and assembled. Therefore, when the dimensions of the inverter case are increased, the driving device is correspondingly increased in size and the mountability is reduced.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional drive device, and can integrate the inverter case with the drive device case, reduce the size, and improve the mountability on a vehicle. It is an object of the present invention to provide a driving device that can perform the driving.

[0008]

In order to achieve the object, a driving device according to the present invention includes a driving device case for accommodating a motor and an inverter fixed to a top wall of the driving device case.
An inverter case accommodating the smoothing capacitor and the control device.

[0009] The inverter case includes a frame and a cover. Further, the frame includes a cylindrical body and at least one attachment portion formed to protrude inward at a predetermined position in the height direction of the body. The inverter is fixed to a top wall via a support, and the control device is fixed to the mounting portion.

In another driving device of the present invention, the smoothing capacitor is fixed to another mounting portion.

In still another driving device of the present invention, the smoothing capacitor is housed in a recess formed in the top wall.

[0012] In still another driving device of the present invention, the motor may further include:
A drive motor and a generator motor arranged on two different axes. The recess is formed between the drive motor and the generator motor.

In still another driving device of the present invention, a through hole is formed in the body at a predetermined position in the circumferential direction so as to penetrate in the height direction. Then, the frame and the cover are integrally fixed to the top wall by fixing means inserted into the through hole.

In still another driving device of the present invention, a connector is further formed on the frame.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. In this case, a hybrid vehicle as a vehicle will be described.

FIG. 1 is a longitudinal sectional view of a driving device according to a first embodiment of the present invention, FIG. 2 is a conceptual diagram of an engine and a driving device according to the first embodiment of the present invention, and FIG. FIG. 2 is a cross-sectional view of the driving device according to the first embodiment.

In FIG. 1, reference numeral 11 denotes an engine (E / G) disposed on a first axis SH1, and 12 denotes the first axis SH.
An output shaft 13 disposed on the first axis SH1 for outputting rotation generated by driving the engine 11; and a torque input via the output shaft 12 and disposed on the first axis SH1. A planetary gear unit as a differential gear device for distributing the torque, an output shaft as a connecting member, which is disposed on the first axis SH1, and outputs rotation after torque is distributed in the planetary gear unit 13, 15 Is a counter drive gear as a first gear fixed to the output shaft 14, disposed on the first axis SH 1. A planetary gear 16 is disposed on the first axis SH 1 via a transmission shaft 17. A generator motor (G) connected to the unit 13. The output shaft 14 has a sleeve shape and is disposed so as to surround the output shaft 12. The counter drive gear 15 is disposed closer to the engine 11 than the planetary gear unit 13.

The planetary gear unit 13 has a first
, A pinion P meshing with the sun gear S, a ring gear R meshing with the pinion P as a second element, and a third element rotatably supporting the pinion P. Carrier CR.

The sun gear S is connected to the generator motor 16 via the transmission shaft 17 and the ring gear R is connected to the output shaft 14.
, The counter drive gear 15 and the carrier CR are connected to the engine 11 via the output shaft 12.

The generator motor 16 is fixed to the transmission shaft 17 and is rotatably disposed.
It comprises a stator 22 disposed around the rotor 21 and a coil 23 wound around the stator 22. The generator motor 16 generates electric power by rotation input via a transmission shaft 17. The coil 23 is connected to a battery (not shown) and supplies current to the battery.

Reference numeral 25 denotes an output shaft 1 of the engine 11.
A drive motor (M) that is disposed on a second axis SH2 parallel to a first axis SH1 coaxial with the second motor 2 and is connected to the battery and supplied with current from the battery to generate rotation;
Reference numeral 6 denotes an output shaft which is disposed on the second axis SH2 and outputs the rotation of the drive motor 25. Reference numeral 27 denotes the second axis SH.
2 and an output gear as a second gear fixed to the output shaft 26. The drive motor 25 is fixed to the output shaft 26 and is rotatably disposed on the rotor 3.
7, a stator 38 disposed around the rotor 37, and a coil 39 wound around the stator 38. A motor is constituted by the generator motor 16 and the drive motor 25.

In order to rotate a drive wheel (not shown) in the same direction as the rotation of the engine 11, the first
Third axis SH3 parallel to axis SH1 and second axis SH2
A counter shaft 31 is disposed on the counter shaft 31, and a counter driven gear 32 as a third gear is mounted on the counter shaft 31.
Is fixed. Further, the counter driven gear 32 and the counter drive gear 15 are meshed with each other, and the counter driven gear 32 and the output gear 27 are meshed with each other,
Rotation of the counter drive gear 15 and output gear 27
Is inverted and transmitted to the counter driven gear 32.

Further, a pinion drive gear 33 as a fourth gear having a smaller number of teeth than the counter driven gear 32 is fixed to the counter shaft 31.

The first axis SH1 and the second axis S
A large ring gear 35 as a fifth gear is disposed on a fourth axis SH4 parallel to H2 and the third axis SH3, and the large ring gear 35 and the pinion drive gear 33 are meshed. Further, a differential device 36 is fixed to the large ring gear 35, and the rotation transmitted to the large ring gear 35 is distributed by the differential device 36 and transmitted to the driving wheels. In addition, the planetary gear unit 13, the generator motor 16, the drive motor 25,
A torque transmission mechanism is constituted by the differential device 36, other gears, and the like.

In this case, since the generator motor 16 and the drive motor 25 are disposed on axes parallel to each other, the reduction ratio between the first axis SH1 and the second axis SH2 can be set freely. . Therefore, the degree of freedom in designing the torque transmission mechanism can be increased. as a result,
The drive motor 25 and the generator motor 16 can be driven under the best conditions.

By the way, 10 is a metal having good thermal conductivity,
For example, a driving device case formed of aluminum, and the driving motor 2 is provided in the driving device case 10.
A drive motor / generator motor accommodating chamber 10a for accommodating the motor 5 and the generator motor 16 is formed. Further, the planetary gear unit 13, the generator motor 16, the drive motor 2
5 and the components of the differential device 36, the drive motor inverter 53 and the generator motor inverter 54, which will be described later, and the heat sink which will be described later constitute a drive device.

An inverter case 46 as a control device case is fixed to a top wall 49 formed at the upper end of the drive device case 10. The inverter case 46 includes a cylindrical frame 47 and a cover 48 disposed further above the frame 47. The inverter / control board housing chamber 60 is formed by the top wall 49 and the inverter case 46. , The inverter / control board accommodation room 60
In addition, an inverter device 50 for driving the driving device
The control board 57 is accommodated therein, and various electronic components (not shown) are attached to the control board 57. The frame 47 is formed of metal, for example, aluminum. Further, a control device is constituted by the control board 57, the electronic components and the like.

The inverter device 50 is attached to the top wall 49 via a support 61, and includes a drive motor inverter 53 formed as a drive motor power module by a bridge circuit (not shown), and another bridge circuit (not shown). A generator motor inverter 54 formed as a power module for the generator motor,
And a smoothing capacitor 55 commonly provided to the drive motor inverter 53 and the generator motor inverter 54.

As shown in FIG. 1, three smoothing capacitors 55 are connected in parallel and arranged in the inverter / control board housing chamber 60, and smoothes the voltage of the power supply (not shown), that is, the power supply voltage. , Drive motor inverter 5
3 and a voltage generated when a transistor as a switching element of each bridge circuit in the generator motor inverter 54 is turned on / off.
Further, the drive motor inverter 53 and the generator motor inverter 54 are disposed separately from each other and adjacent to each other on the support 61, and are connected to the tangents of the drive motor 25 and the generator motor 16. It extends along a plane parallel to the surface and is fixed to the support 61 by bolts b2. Therefore, since the axial size of the drive device can be reduced, the mountability of the drive device to a hybrid vehicle whose size in the width direction is restricted, in particular, an FF (front drive / front axle) type hybrid vehicle is improved. Can be done.

Further, since the drive motor inverter 53 and the generator motor inverter 54 are adjacent to each other to form an inverter device 50, and the inverter device 50 is integrated with the drive device case 10, The drive motor 25 is connected to the drive motor inverter 53.
To the generator motor 16
Need not be connected separately. Therefore, the size of the driving device can be reduced.

The top wall 49 and the support body 61 constitute a heat sink for heat radiation for closing the opening of the drive device case 10, and the heat sink serves as a partition between the drive device case 10 and the inverter case 46. Is configured.

In this case, the inverter device 50 is mounted on a heat sink and has a support 6 functioning as a mounting member.
1, the inverter device 50 can be assembled to the drive device case 10 as a subassembly. Therefore, not only can the assembling process of the inverter device 50 be made independent, but also the operation can be checked before assembling the inverter device 50 to the drive device case 10.

Further, since a part of the partition wall is formed by the top wall 49, the driving motor / generator motor accommodating chamber 1 is formed.
It is not necessary to use a special wall material for partitioning the inverter 0a and the inverter / control board housing chamber 60. Therefore, the driving device can be reduced in weight.

A concave portion 49 is provided on the upper surface of the top wall 49.
a, 49b, a concave portion 61a is formed on the lower surface of the support body 61, and the concave portion 49b is
The recess 61 a is covered by the partition plate 82. Then, the upper surface of the top wall 49 and the lower surface of the support body 61 are opposed to each other, and the support body 61 is fixed to the top wall 49 with bolts b3. A medium flow path 56a for flowing water is provided between the partition plate 82 and the top wall 49.
However, an oil passage 56c for flowing oil for lubrication is formed between the partition plate 81 and the top wall 49. The support 61 and the partition plates 81 and 82 are formed of a metal having good thermal conductivity. In addition, the medium flow paths 56a and 56b and a radiator (not shown) are connected, and the support 61 and the top wall 4 are connected.
The cooling water whose temperature has increased due to the heat of 9 is sent to the radiator and cooled by the radiator. The medium flow path 56a is formed by a plurality of grooves, and radiating fins extending from the support 61 are formed between the grooves.

Therefore, the medium flow paths 56a, 56b
The inverter device 50 and the control device are directly cooled by the cooling water flowing through the
By cooling the oil flowing through the drive motor / generator motor accommodating chamber 10a, the drive motor 25 and the generator motor 16 can be cooled. In this case, by the cooling water flowing through the common medium flow paths 56a and 56b,
Since the drive motor inverter 53 and the generator motor inverter 54 can be cooled, the medium flow path 56
a, 56b can be simplified, and the drive device can be downsized. Further, by cooling the drive device case 10, the drive motor / generator motor housing 10
Since the oil flowing through a can be cooled, an oil cooler is not required and the oil passage can be simplified.

In the inverter device 50, by driving the drive motor inverter 53, the DC current supplied from the battery is converted into three-phase currents. By supplying or driving the generator motor inverter 54, the three-phase current supplied from the generator motor 16 can be converted into a DC current, and the DC current can be supplied to the battery.

To this end, a main wiring board 62 is provided between the drive motor inverter 53, the generator motor inverter 54 and the smoothing capacitor 55. The main wiring board 62 has an inverted “T” shape,
Each smoothing capacitor 55 and terminal 7 are extended vertically.
A common wiring board portion 63 connected via the first and second 72 and the drive motor inverter 53 for connecting the wiring board portion 63 and the drive motor inverter 53 are located on the drive motor inverter 53. The wiring board part 64 is located on the generator motor inverter 54 and the wiring board part 6
It comprises a wiring board 65 for the generator motor 16 connecting between the wiring board 3 and the inverter 54 for generator motor, and a connecting section 84 connecting between the wiring board 64 and the DC connector 83 as a connector. The DC connector 83 and a battery (not shown) are connected by a power cable (not shown).

In this case, the wiring board 63 is
4 and 65, the overall length of the main wiring board 62 can be reduced. Therefore, the L component can be reduced. Moreover, since the drive motor 25 and the generator motor 16 are connected via the smoothing capacitor 55, the power supply between the drive motor 25 and the generator motor 16 can be smoothed.

In FIG. 1, the drive motor 25 includes a stator 38 fixed to the drive device case 10, a rotor 37 fixed to the output shaft 26 and rotatably disposed in the stator 38, and It comprises a coil 39 wound around a stator 38. Similarly, the generator motor 16 includes a stator 22 fixed to the drive device case 10, a rotor 21 fixed to the transmission shaft 17 and rotatably disposed in the stator 22, and a stator 22. And a coil 23 wound around it.

In order to connect the drive motor 25 and the drive motor inverter 53 and to connect the generator motor 16 and the generator motor inverter 54, six connecting members 98 (FIG. 1) , One of the connecting members 98 is shown). 60
It is arranged to protrude. Each connecting member 98 is connected to the top wall 49.
And a metal rod 85 extending vertically in the wiring board part 64 and fixed to the top wall 49 by a bolt b6.

At the upper end of each metal rod 85, an output bus bar extending from three output terminals (not shown) of the drive motor inverter 53 and an input bus bar extending from an input terminal (not shown) of the generator motor inverter 54 are provided. Connected. And, at the lower end of each of the metal rods 85,
A lead (not shown) extending from the coil 39 and a lead (not shown) extending from the coil 23 are connected.

By the way, the frame 47 has a cylindrical body 91 having a square shape, and a portion corresponding to the DC connector 83 at the lower end of the body 91, that is, the inside thereof, that is, the inverter / control board accommodation room. 60, the connector supporting portion 92 protruding into the body 60,
At a plurality of predetermined locations in the height direction of the first mounting portion 93 protruding into the inverter / control board housing chamber 60 and at the upper end of the body portion 91 at substantially the center in the present embodiment. , The second mounting portion 94 protruding into the inverter / control board housing chamber 60
Is provided. In the present embodiment, the first,
The second mounting portions 93 and 94 are formed at a plurality of predetermined locations on the inner periphery of the trunk portion 91, but may be formed over the entire inner periphery of the trunk portion 91.

A through hole 95 is formed in the connector support portion 92, and the DC connector 83 is inserted into the through hole 95.
Is fixed to the connector support portion 92 by bolts b14. Further, the holder 96 for holding each smoothing capacitor 55 on the first mounting portion 93 is provided with a bolt b.
11 and the control board 57 is fixed to the second mounting portion 94 by bolts b12.

A thick portion (not shown) is formed at a predetermined position in the circumferential direction of the wall of the body portion 91, and a frame through hole is formed in the thick portion so as to penetrate in the height direction. A cover through-hole (not shown) is formed in a portion of the cover 48 corresponding to the frame through-hole. Therefore, the frame 47 and the cover 48 are integrally fixed to the top wall 49 by passing bolts (not shown) as fixing means through the frame through-holes and the cover through-holes, and the inverter case 46 is integrated with the drive device case 10. Can be

As described above, since the inverter case 46 is composed of the frame 47 and the cover 48, by replacing the frame 47, the drive device can be mounted in correspondence with many types of hybrid vehicles. For example, by changing the position where the connector support portion 92 is formed, the drive device can be mounted on various hybrid vehicles having different battery positions. Also,
An IO port (not shown) as a signal connector of the control device is formed in the body portion 91.
By changing the position where the port is formed, the drive device can be mounted on various hybrid vehicles in which the position of the external device is different.

Since the smoothing capacitor 55 can be fixed by the first mounting portion 93 and the control device can be fixed by the second mounting portion 94, the smoothing capacitor 55 and the control device can be fixed to the partition. No bracket is required. Also, the first and second mounting portions 93 and 94
Are formed integrally with the body 91 and toward the inverter / control board housing chamber 60. Moreover, since the thick portion of the body 91 is used to fix the frame 47 and the cover 48 to the top wall 49, it is not necessary to project a flange or the like outward of the body 91. Therefore, the size of the inverter case 46 can be reduced. As a result, the size of the drive device can be reduced, so that the mountability of the drive device on a hybrid vehicle can be improved.

Since the body 91 has a cylindrical shape and the lower end surface is flat, the mounting surface of the inverter case 46 in the drive device case 10, ie, the top wall 4
9 can be flattened. Therefore, workability of the drive device case 10 can be improved.

Next, a second embodiment of the present invention will be described. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by attaching the same code | symbol.

FIG. 4 is a perspective view of a driving device according to a second embodiment of the present invention, FIG. 5 is a partial sectional view of the driving device according to the second embodiment of the present invention as viewed from the front, and FIG. It is the fragmentary sectional view which looked at the drive in a 2nd embodiment of the invention from the back.

In the drawing, reference numeral 10 denotes a driving device case, and a top wall 4 formed at an upper end portion of the driving device case 10.
9 and an inverter case 46 as a control device case
Is arranged. The inverter case 46 includes a cylindrical frame 47 and a cover 48 disposed further above the frame 47. The inverter / control board housing chamber 60 is formed by the top wall 49 and the inverter case 46. In the inverter / control board accommodation room 60,
An inverter device 50 for driving the driving device and a control board 57 are accommodated.

The inverter device 50 includes a drive motor inverter 53, a generator motor inverter 54, and a smoothing capacitor 55 commonly provided to the drive motor inverter 53 and the generator motor inverter 54.
The drive motor inverter 53 and the generator motor inverter 54 are attached to the top wall 49 via a support 61, and the smoothing capacitor 55 has an upper end protruding and opening to the top wall 49. Recess 1 formed
11 is stored. A capacitor presser 121 is engaged with the upper end of the smoothing capacitor 55, and the capacitor presser 121 is fixed to the top wall 49 by bolts b20, thereby preventing the smoothing capacitor 55 from falling out of the recess 111. In this case, the concave portion 111 is formed so as to face between the drive motor 25 and the generator motor 16, and a part of the concave portion 111 is made to enter inside of a common tangent of the drive motor 25 and the generator motor 16. . The smoothing condenser 55 is disposed in the drive motor / generator motor accommodating chamber 10a with its lower end protruding from the top wall 49 toward the generator motor 16 side, and a part of the smoothing capacitor 55 is It is arranged to face between. Therefore, the dead space in the drive device case 10 can be reduced, and the drive device can be downsized.

The drive motor inverter 53 and the generator motor inverter 54 are disposed separately from each other and adjacent to each other on the support 61, and the drive motor 25 and the generator motor 16 are connected to each other. The support 6 extends along a plane parallel to each tangent.
Fixed to 1.

The top wall 49 and the support body 61 constitute a heat sink for heat radiation for closing the opening of the drive device case 10, and the heat sink and the recess 111 allow the drive device case 10 and the inverter case 46 to be connected to each other. A partition is formed between the two.

A concave portion 49a is formed on the upper surface of the top wall 49.
However, a groove 161 a is formed on the lower surface of the support 61, and the concave portion 49 a is covered with the partition plate 181, and the groove 161 a is covered with the partition plate 82. Then, the upper surface of the top wall 49 and the lower surface of the support body 61 are opposed to each other, and the support body 61 is fixed to the top wall 49 by a bolt (not shown).
A medium flow path 56 a for flowing cooling water as a medium between the support 61 and the partition plate 82 is provided between the support plate 61 and the partition plate 18.
1 and a medium flow path 56b for flowing the cooling water,
An oil passage 56c for flowing lubricating oil is formed between the partition plate 181 and the top wall 49. The partition plate 181 includes fins 115 protruding into the medium flow path 56b and fins 116 protruding from the oil path 56c. The partition plate 82 is fixed to the support 61 by bolts b21, and the partition plate 181 is
2 secures it to the top wall 49.

In the inverter device 50, by driving the drive motor inverter 53, a DC current supplied from a battery (not shown) is converted into three-phase currents.
, Or by driving the generator motor inverter 54, the three-phase current supplied from the generator motor 16 can be converted into a DC current, and the DC current can be supplied to the battery. .

For this purpose, a main wiring board 162 is provided between the drive motor inverter 53, the generator motor inverter 54 and the smoothing capacitor 55. The main wiring board 162 has a flat shape, connects the smoothing capacitor 55, the drive motor inverter 53, and the generator motor inverter 54, and is connected to a DC connector 183 as a connector. Note that DC power is supplied by a power cable (not shown).
The connector 183 and the battery are connected.

The frame 47 is provided with a tubular body 191 having a square shape, and an attachment portion 194 at the upper end of the body 191 and protruding into the inverter / control board housing chamber 60. A connector supporting portion 192 is provided at a predetermined position at the lower end of the body portion 191.
Is formed, and the DC connector 183 is connected to the bolt b23 via the bracket 131 in the connector support portion 192.
Is fixed to the torso 191. The control board 57
Are fixed to the mounting portion 194 by bolts b12.

A thick portion P1 is formed at a predetermined position in the circumferential direction of the wall of the body portion 191. A frame through hole (not shown) is formed through the thick portion P1 in the height direction. At the same time, a cover through-hole (not shown) is formed in a portion of the cover 48 corresponding to the frame through-hole. Therefore, the frame 47 and the cover 48 are integrally fixed to the top wall 49 by penetrating the bolt b25 as fixing means through the frame through-hole and the cover through-hole, and the inverter case 46 is integrated with the drive device case 10. can do.

As described above, since the inverter case 46 is composed of the frame 47 and the cover 48, by replacing the frame 47, the drive device can be mounted in correspondence with many types of hybrid vehicles. For example, by changing the position where the connector support portion 192 is formed, the drive device can be mounted on various hybrid vehicles having different battery positions. An IO port 141 is formed in the body 191 as a signal connector of the control device.
By changing the position of the connector supporting portion 142 where the port 141 is formed, the drive device can be mounted on various hybrid vehicles in which the positions of the external devices are different.

Further, since the control device can be fixed by the mounting portion 194, a bracket for mounting the control device on the partition is not required. Also, the mounting portion 194
Are formed integrally with the body 191 and toward the inverter / control board housing chamber 60. Further, since the smoothing capacitor 55 is accommodated in the concave portion 111, a bracket for attaching the smoothing capacitor 55 to the partition wall becomes unnecessary. Moreover, since the thick portion P1 is used to fix the frame 47 and the cover 48 to the top wall 49, there is no need to project a flange or the like outward of the body portion 191. Therefore, inverter case 46
Can be reduced in size. As a result, the size of the drive device can be reduced, so that the mountability of the drive device on a hybrid vehicle can be improved.

Further, since the body portion 191 has a cylindrical shape and the lower end surface is flat, the upper end surface of the top wall 49 can be made flat. Therefore, workability of the drive device case 10 can be improved.

The present invention is not limited to the above embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0063]

As described above in detail, according to the present invention, in the driving device, the driving device case for accommodating the motor, the inverter device, the smoothing capacitor and the fixing device fixed to the top wall of the driving device case. And an inverter case accommodating the control device.

The inverter case has a frame and a cover. Further, the frame includes a cylindrical body and at least one attachment portion formed to protrude inward at a predetermined position in the height direction of the body. The inverter is fixed to a top wall via a support, and the control device is fixed to the mounting portion.

In this case, since the control device can be fixed by the mounting portion, a bracket for mounting the control device on the partition is not required. Further, the attachment portion is formed integrally with the body portion and inward. Therefore, the size of the inverter case can be reduced. As a result, the size of the drive device can be reduced, so that the mountability of the drive device on the vehicle can be improved.

Further, since the body has a cylindrical shape and the lower end surface is flat, the mounting surface of the inverter case in the drive device case can be made flat. Therefore,
The workability of the drive device case can be improved.

Since the inverter case is composed of a frame and a cover, by replacing the frame, the driving device can be mounted in correspondence with many kinds of vehicles.

In another drive device of the present invention, the smoothing capacitor is fixed to another mounting portion.

In this case, since the bracket for attaching the smoothing capacitor to the partition is not required, the size of the inverter case can be reduced.

In still another driving device of the present invention, the smoothing capacitor is housed in a recess formed in the top wall.

In this case, since the bracket for attaching the smoothing capacitor to the partition is not required, the size of the inverter case can be reduced.

In still another drive device of the present invention, the motor is further provided in the drive device case,
A drive motor and a generator motor arranged on two different axes. The recess is formed between the drive motor and the generator motor.

In this case, since the recess is formed so as to face between the drive motor and the generator motor, the dead space in the drive device case can be reduced, and the drive device can be downsized. .

In still another driving device of the present invention, a through hole is formed in the body at a predetermined position in the circumferential direction so as to penetrate in the height direction. Then, the frame and the cover are integrally fixed to the top wall by fixing means inserted into the through hole.

In this case, since the through hole of the body is used to fix the frame and the cover to the top wall, there is no need to project a flange or the like outward of the body. Therefore, the size of the inverter case can be reduced.

In still another driving device of the present invention, a connector is further formed on the frame.

In this case, by changing the position where the connector supporting portion is formed on the frame, the drive device can be mounted on various vehicles having different positions of the battery, the external device, and the like.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a driving device according to a first embodiment of the present invention.

FIG. 2 is a conceptual diagram of an engine and a driving device according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the driving device according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a driving device according to a second embodiment of the present invention.

FIG. 5 is a partial sectional view of a driving device according to a second embodiment of the present invention as viewed from the front.

FIG. 6 is a partial cross-sectional view of a driving device according to a second embodiment of the present invention as viewed from the back.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 drive device case 13 planetary gear unit 16 generator motor 25 drive motor 36 differential device 46 inverter case 47 frame 48 cover 49 top wall 53 drive motor inverter 54 generator motor inverter 55 smoothing capacitor 57 control board 61 support 91 191 Body 93, 94 First and second mounting parts 95 Through hole 111 Depression 141 IO port 194 Mounting part b25 Bolt

[Procedure amendment]

[Submission date] October 21, 1999 (1999.10.
21)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 4

FIG. 3

FIG. 5

FIG. 6

Continuing on the front page (72) Inventor Hiromichi Agata 10 Takane, Fujii-machi, Anjo, Aichi Prefecture Inside Aisin AW Co., Ltd.・ F-term in AW Corporation (reference) 5H007 BB06 CC03 HA03 HA06 5H115 PC06 PG04 PI16 PI24 PI29 PO02 PU08 PU24 PU25 PV09 PV23 RB22 UI32 UI34 5H611 AA00 BB01 BB02 BB04 TT01 TT02 TT06 UA01

Claims (6)

[Claims] 1. A drive device case for accommodating a motor, and an inverter case fixed to a top wall of the drive device case and containing an inverter, a smoothing capacitor, and a control device, wherein the inverter case includes a frame and a cover. The frame comprises a cylindrical body, and at least one mounting portion formed to protrude inward at a predetermined position in the height direction of the body, the inverter via a support A drive unit fixed to the top wall, wherein the control device is fixed to the mounting portion. 2. The driving device according to claim 1, wherein the smoothing capacitor is fixed to another mounting portion. 3. The driving device according to claim 1, wherein the smoothing capacitor is housed in a recess formed in the top wall. 4. The motor is a drive motor and a generator motor disposed on two different axes in the drive device case, and the recess faces between the drive motor and the generator motor. The driving device according to claim 3, wherein the driving device is formed by: 5. A through hole is formed in the body at a predetermined position in a circumferential direction so as to penetrate in a height direction.
The drive device according to claim 1, wherein the frame and the cover are integrally fixed to the top wall by fixing means inserted into the through hole. 6. The driving device according to claim 1, wherein a connector is formed on the frame.