JP6743742B2 - Hybrid vehicle - Google Patents

Description

The present invention relates to a hybrid vehicle equipped with an internal combustion engine and a rotating electric machine as power sources.

In recent years, a hybrid vehicle equipped with an internal combustion engine and a rotating electric machine as power sources has become widespread. In a hybrid vehicle, a rotary electric machine is interposed between an internal combustion engine and a transmission, and a power transmission path for extracting rotary power from both the internal combustion engine and the rotary electric machine, or power for extracting rotary power only from the rotary electric machine. A power transmission device that selectively forms one of the transmission paths is mounted.

In such a power transmission device, a layout is adopted in which two sets of clutches, which are installed to selectively use an internal combustion engine used as a power source of a hybrid vehicle and a rotating electric machine, are arranged inside a rotor of the rotating electric machine ( See Patent Document 1).

JP, 2016-33003, A

However, in such a hybrid vehicle, since two sets of clutches are housed inside the rotating electric machine in order to switch the power transmission path of the power source, there is a problem that the power system becomes large. was there.

Therefore, an object of the present invention is to provide a hybrid vehicle in which a power system is downsized and a compact power system is mounted.

One aspect of the invention of a hybrid vehicle that solves the above-mentioned problem is to mount an internal combustion engine and a rotary electric machine as power sources, and to provide a power transmission path for transmitting the rotary power output from the internal combustion engine or the rotary electric machine to a transmission. A hybrid vehicle using only the rotating electric machine, or both the internal combustion engine and the rotating electric machine as a power source for traveling, wherein the rotating electric machine is rotatably housed in a stator. The rotor includes a rotor that is rotationally driven to output the rotational power transmitted to the transmission by receiving the rotational magnetic force from the rotor, and the rotor is pulled in the axial direction from the inside of the rotor body so that the rotational power cannot be transmitted. Alternatively, a shaft for switching to a state in which the rotational force cannot be generated even when receiving the rotational magnetic force, and a mechanism for sliding the shaft in the axial direction and pulling the shaft out of the rotor body are installed.

Thus, according to one aspect of the present invention, the rotor of the rotating electric machine generates rotational force by rotationally driving the rotor that receives rotational magnetic force from the stator side as long as the shaft is located inside the rotor body without being pulled out. The rotation power can be transmitted to the transmission side. Further, the rotor of the rotating electric machine is switched to a state in which the rotational power cannot be transmitted or a state in which the rotational force cannot be generated by the rotating magnetic force from the stator side by sliding the shaft in the axial direction and pulling it out. ..

This makes it impossible to transmit or generate the rotational power transmitted to the transmission without housing the clutch inside the rotor, thereby making the rotary electric machine substantially inoperable (ineffective).

As a result, downsizing of the power system including the power transmission path of the rotary electric machine can be realized, and a hybrid vehicle equipped with a compact power system can be provided.

FIG. 1 is a diagram illustrating an example of a hybrid vehicle according to a first embodiment of the present invention, and is a conceptual diagram showing a schematic configuration thereof. FIG. 2 is a diagram showing the function of the power transmission device mounted on the hybrid vehicle, (a) is a model diagram briefly showing the relationship between the rotational power transmission path and the clutch, and (b) is the rotary electric machine. 3 is a list showing connection/disconnection states of the above. FIG. 3 is a diagram illustrating an example of the hybrid vehicle according to the second embodiment of the present invention, and is a conceptual diagram showing a schematic configuration thereof.

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

(First embodiment)
1 and 2 are diagrams illustrating an example of a hybrid vehicle according to the first embodiment of the present invention.

In FIG. 1, a vehicle 100 is constructed as a hybrid vehicle equipped with an internal combustion engine type engine 110 and a rotating electric machine 120 as a driving power source. The vehicle 100 travels by controlling the entire vehicle by an ECU (Electronic Control Unit) 50 to efficiently drive the engine 110 and the rotating electrical machine 120 to output rotational power and rotate the drive wheels 101. The vehicle 100 is configured to transmit the rotational power output from the engine 110 or the rotary electric machine 120 to the drive wheel 101 side while transmitting the rotational power to the transmission 130 via the power transmission device 10 to change the speed.

The engine 110 outputs driving force by burning fuel and rotating the output shaft 111. The rotary electric machine 120 converts the direct current in the battery Ba into an alternating current by the inverter Inv and energizes the three-phase winding coil 122 of the stator 121, which is fixed to the frame side (not shown) of the vehicle 100. A driving force is output by generating a rotating magnetic force and rotating the rotor 123. The transmission 130 receives the rotational power transmitted through the power transmission device 10 at the input shaft 131, changes the speed, and outputs the rotational power from the output shaft 132. The vehicle 100 travels when rotational power output from the transmission 130 is transmitted to the left and right drive wheels 101 via the differential device 140 to be rotated.

The power transmission device 10 is constructed by including an input rotary shaft 11, an intermediate rotary shaft 12, an output rotary shaft 13, a friction clutch 15, and an actuator 17.

The input rotary shaft 11 is connected to the output shaft 111 of the engine 110 and receives the rotary power output from the engine 110. The intermediate rotary shaft 12 is connected to the input rotary shaft 11 via the friction clutch 15, and is also directly connected to the rotor 123 to receive the rotary power output from the engine 110 or the rotary electric machine 120. The output rotary shaft 13 is connected to both the intermediate rotary shaft 12 and the input shaft 131 of the transmission 130, receives the rotational power of the engine 110 and the rotary electric machine 120 transmitted from the intermediate rotary shaft 12, and then the transmission. Hand over to 130.

The friction clutch 15 is actuated by the actuator 17 and switches the connection state or the disconnected state of the input rotary shaft 11 and the intermediate rotary shaft 12 to form or interrupt the transmission path of the rotational power from the engine 110. The intermediate rotary shaft 12 is always connected to the rotor 123 to form a transmission path of rotational power from the rotary electric machine 120.

With this structure, in the power transmission device 10, the input rotary shaft 11 is integrally rotated with the output shaft 111 of the engine 110, and the intermediate rotary shaft 12 is integrally rotated with the output rotary shaft 13 and the input shaft 131 of the transmission 130. For this reason, the transmission path of the rotational power of the engine 110 via the input rotary shaft 11 is formed or interrupted by the friction clutch 15, and the rotational power of the engine 110 in addition to the rotational power of the rotary electric machine 120 is transmitted to the output rotary shaft 13 (gear shift). Machine 130) as appropriate.

The input rotary shaft 11, the intermediate rotary shaft 12, and the output rotary shaft 13 are mounted on a frame side (not shown) of the vehicle 100 so as to rotate coaxially with a common extension line of the shaft center. It is rotatably supported.

In the rotating electric machine 120, a rotor 123 is rotatably housed in a stator 121. The stator 121 is provided with a three-phase winding coil 122 for each of the U-phase, V-phase, and W-phase, and the direct current in the battery Ba is converted into an alternating current by the inverter Inv to be energized. A rotating magnetic field that rotates the rotor 123 is generated.

The rotor 123 is constructed based on a bottomed cylindrical member 125 having a hollow space 125s. In the rotor 123, the rotor body 124 is installed on the outer peripheral side of the cylindrical portion 125 a of the cylindrical member 125. In the rotor body 124, permanent magnets 128 are embedded in a plurality of circumferential electromagnetic steel plates which are stacked one on another. The rotor 123 is rotationally driven by the rotational magnetic force (magnetic flux) generated by energizing and exciting the three-phase winding coil 122 of the stator 121 to link with the rotor body 124, and outputs a driving force.

Further, in the rotor 123, a disk-shaped portion 125b as a cylindrical bottom portion is fixed to the outer peripheral edges of both ends of the cylindrical portion 125a of the cylindrical member 125. The cylindrical member 125 is rotatably supported on the input rotary shaft 11 and the intermediate rotary shaft 12 via bearings 126 on the axial center side of the disk-shaped portion 125b.

Then, the power transmission device 10 has one end 11 a of the input rotary shaft 11 connected to the output shaft 111 of the engine 110 so as to rotate integrally with the inside of the cylindrical member 125 of the rotor 123, and the input of the transmission 130. The friction clutch 15 and the actuator 17 are housed and constructed together with the one end portion 12a of the intermediate rotary shaft 12 that is coupled to the shaft 131 via the output rotary shaft 13 so as to rotate integrally.

The friction clutch 15 includes a coupling plate 21, a friction plate 25, and a support plate 35. The connection plate 21 and the support plate 35 are supported via the disk member 22 and the cylindrical member 23. The friction plate 25 is also supported via the disk member 127 and the tubular portion 125a, similarly to the coupling plate 21 and the like.

The coupling plate 21 has a disk member 22 fixed to one end 11 a of the input rotary shaft 11 so as to rotate coaxially with the shaft center in common, and a cylindrical member 23 has an axis common to the outer peripheral edge of the disk member 22. It is fixed so that it rotates coaxially. The connecting plate 21 is formed in a donut-shaped disk shape, and is supported on the outer peripheral surface of the cylindrical member 23 so as to rotate coaxially with a common axis.

Like the connecting plate 21, the support plate 35 is formed in a donut-shaped disk shape, uses the cylindrical member 23 in common, and is supported by its outer peripheral surface so as to rotate coaxially with the axis common.

Similarly to the coupling plate 21, the friction plate 25 is also fixed to the cylindrical portion 125a of the cylindrical member 125 by fixing the disk member 127 to the one end portion 12a of the intermediate rotation shaft 12 so as to rotate coaxially with the shaft center in common. The outer peripheral edge of the disk member 127 is fixed so as to rotate coaxially with a common axis. The friction plate 25 is also formed in a donut-shaped disk shape, and is supported by the inner peripheral surface of the cylindrical portion 125a of the cylindrical member 125 so as to be coaxially rotated with a common axis.

In the friction clutch 15, the cylindrical member 23 supporting the coupling plate 21 is housed in the cylindrical member 125 supporting the friction plate 25, and the coupling on the input rotary shaft 11 side supported on the outer peripheral surface of the cylindrical member 23. The plate 21 is installed so as to face the friction plate 25 on the side of the intermediate rotary shaft 12 supported by the inner peripheral surface of the tubular portion 125a of the cylindrical member 125 with a predetermined area or more.

As will be described later, the donut disk-shaped connecting plate 21 and the friction plate 25 approach or separate according to the pressure applied from the actuator 17, and are pressed against the support plate 35 according to the applied pressure. By making face-to-face contact and generating a frictional force, they are brought into a connected state and integrally rotated, or are brought into a non-contact state under no load to freely rotate with each other.

In the description of the present embodiment, the coupling plate 21 and the friction plate 25 of the friction clutch 15 are illustrated in the form of a single plate, but a plurality of general-purpose units arranged so as to alternately sandwich a plurality of plates. It goes without saying that a plate clutch structure may be adopted.

The friction plate 25 is slidable on the inner peripheral surface side of the tubular portion 125a of the cylindrical member 125 fixed to the intermediate rotary shaft 12 so as to rotate integrally therewith in the axial direction by a spline structure (not shown). Supported by. Similarly, the connecting plate 21 is also slidably supported in the axial direction by a spline structure (not shown) on the outer peripheral surface side of the cylindrical member 23 which is fixed to the input rotary shaft 11 so as to rotate coaxially therewith. Has been done. The support plate 35 is fixed to the outer peripheral surface of the cylindrical member 23 in a non-slidable manner so as to face the connection plate 21 from the input rotary shaft 11 side on the back side of the friction plate 25.

In short, the coupling plate 21 and the friction plate 25 are coaxial cylinders that rotate integrally with the input rotary shaft 11 and the intermediate rotary shaft 12, respectively, with respect to the support plate 35 that is fixed to the input rotary shaft 11 and faces the non-sliding state. The members 23 and 27 are slidably supported in the axial direction.

Therefore, in the power transmission device 10, the friction clutch 15 functions by the frictional contact between the connecting plate 21 and the friction plate 25 as they are pressed against the support plate 35, and the friction plate 15 is engaged. Is connected to the transmission 130 so that rotational power can be transmitted. Here, in the present embodiment, the coupling plate 21, which is the clutch element of the friction clutch 15, is supported by the cylindrical member 23 on the input rotary shaft 11 side, and the friction plate 25 is supported by the cylindrical member 125 on the intermediate rotary shaft 12 side. An example will be described, but the present invention is not limited to this, and it goes without saying that the support plate 35 may be included and the positional relationship may be changed.

The actuator 17 causes the friction clutch 15 to function by abutting the piston member 41 against the connecting plate 21 and slidingly moving the piston member 41 in the axial direction so as to sequentially press the friction plate 25 and the support plate 35. There is. Here, the piston member 41 is formed in a cylindrical shape so that it can abut and urge the entire circumference of the connecting plate 21.

In the actuator 17, a switching oil chamber 43 and a return chamber 45 are arranged around the circumference of the one end portion 12a of the intermediate rotation shaft 12 that is close to the one end portion 11a of the input rotation shaft 11 in a non-contact manner. In the actuator 17, the partition wall member 17c, which is movable in the axial direction, is fixedly installed on the piston member 41 side between the outer wall members 17a and 17b fixed on the intermediate rotation shaft 12 side, so that the switching oil chamber 43 is provided. It is constructed so that it is located on the output rotary shaft 13 side and the return chamber 45 is located on the input rotary shaft 11 side. The actuator 17 is constructed so that a predetermined hydraulic pressure is appropriately supplied to the switching oil chamber 43 via an oil passage 42 formed around the intermediate rotation shaft 12 so that the partition member 17c slides to function. ing. In the return chamber 45 of the actuator 17, a return spring (elastic member) for urging the partition member 17c moved according to the hydraulic pressure supplied to the switching oil chamber 43 in the direction of returning by the elastic force when the hydraulic pressure supply is stopped. 49 are housed. Here, a plurality of return springs 49 of the return chamber 45 are installed at circumferentially uniform locations around the intermediate rotation shaft 12.

The actuator 17 is installed such that a coaxially rotating cylindrical member 46 is fixed and slides integrally on the outer peripheral edge side of a partition member 17c slidable in the axial direction between the outer wall members 17a and 17b. The cylindrical member 46 is connected and fixed to one end on the output rotary shaft 13 side so that the piston member 41 is exteriorly mounted via a disc member 47. With this structure, the piston member 41 accommodates the cylindrical member 46 so that the cylindrical member 46 can be coaxially rotated inside, and the piston member 41 is slid in the axial direction by the actuator 17. Here, the outer wall members 17a and 17b of the actuator 17 are formed in a disk shape, and the shaft center side is fixed to the intermediate rotary shaft 12, so that the outer wall members 17a and 17b move relatively in the cylindrical member 46, and the partition wall member 17c, It moves relative to the intermediate rotary shaft 12 integrally with the fixed cylindrical member 46.

As a result, in the power transmission device 10, the piston member 41 is not moved when the switching oil chamber 43 of the actuator 17 is not hydraulically supplied. Therefore, the friction clutch 15 maintains the non-contact state with the coupling plate 21 of the friction plate 25 and the output shaft 111 of the engine 110 is separated from the intermediate rotation shaft 12.

Further, in the power transmission device 10, when hydraulic pressure is supplied to the switching oil chamber 43 of the actuator 17, the space of the return chamber 45 is reduced against the elastic force of the return spring 49 of the actuator 17, and the piston member 41 is It is abutted against the connection plate 21.

Therefore, in the friction clutch 15, the piston member 41 of the actuator 17 is abutted according to the load pressure and the connecting plate 21 is moved, so that the connecting plate 21 is sandwiched between the connecting plate 21 and the supporting plate 35. Frictional contact with the plate 25. In the friction clutch 15, the friction plate 25 is sandwiched between the connecting plate 21 and the support plate 35 and brought into contact with each other with a pressure that allows the friction plate 25 to rotate integrally, thereby causing the output shaft 111 of the engine 110 to rotate at an intermediate rotation shaft. It is possible to switch to a connected state in which the fastener 12 is fastened.

In the friction clutch 15, the load pressure from the piston member 41 is decreased, and the piston member 41 is returned by the elastic force of the return spring 49 of the return chamber 45, so that the friction between the coupling plate 21 and the friction plate 25. The contact is eliminated, and the output shaft 111 of the engine 110 is separated from the intermediate rotation shaft 12 and switched to the cutoff state.

In the rotor 123 of the rotary electric machine 120 of the present embodiment, the rotor main body 124 in which the permanent magnet 128 is embedded and the cylindrical member 125 fixed to the intermediate rotating shaft 12 are connected by the rotor operating mechanism 60. It is constructed to rotate together.

The actual rotor mechanism 60 is constructed by including an outer ring member 61, inner ring members 62 and 63, a connecting shaft 64, and a pulling member 66.

The outer ring member 61 is formed in a ring shape fixed to the inner peripheral surface of the rotor body 124 facing the outer peripheral surface of the tubular portion 125a of the cylindrical member 125, and is located at the center in the axial direction. The inner ring members 62, 63 are formed in a pair of ring shapes fixed to the outer peripheral surface of the cylindrical portion 125a of the cylindrical member 125 facing the inner peripheral surface of the rotor body 124, and the outer ring member is formed at the center in the axial direction. It is located so as to sandwich 61. The outer ring member 61 and the inner ring members 62, 63 are formed in ring shapes having substantially the same diameter, and are fixed to the rotor body 124 and the cylindrical member 125 so as to overlap in the axial direction.

The outer ring member 61 and the inner ring members 62, 63 are formed with through holes 61a, 62a, 63a penetrating in the axial direction in a state of overlapping in the axial direction. The through holes 61a, 62a, 63a are opened at a plurality of at least two locations in the circumferential direction at equal intervals between the outer ring member 61 and the inner ring members 62, 63.

The connecting shaft 64 is formed in a rod shape that can be fitted into the through holes 61a, 62a, 63a of the outer ring member 61 and the inner ring members 62, 63. As a result, the plurality of connecting shafts 64 are inserted into and fitted into the through holes 61a, 62a, 63a of the outer ring member 61 and the inner ring members 62, 63, respectively. The rotor body 124 and the cylindrical member 125, which are fixed to the rotors 62 and 63, respectively, can be connected so as to rotate together. That is, the connecting shaft 64 constitutes a connecting member that connects the outer ring member 61 and the inner ring members 62, 63.

The connecting shaft 64 has a disc shape having a larger diameter than the tip 64a side at the rear end opposite to the tip 64a inserted into the through holes 61a, 62a, 63a of the outer ring member 61 and the inner ring members 62, 63. It has a hook portion 65 formed on the.

The pull-out member 66 is formed in a flange shape having the same diameter as the outer ring member 61 and the inner ring members 62, 63 so as to be located in the vicinity of the hook portion 65 of the connecting shaft 64, and has a disc-shaped portion 66a and a cylindrical shape. And a portion 66b. The disk-shaped portion 66a of the pulling-out member 66 is located inside the hook portion 65 of the connecting shaft 64 in the axial direction of the rotor 123, faces the inner end surface 65a of the hook portion 65, and the cylindrical portion 66b is connected. The shaft 64 is located radially inward of the rotor 123 with respect to the hook portion 65, and is disposed so as to face the outer peripheral surface 65 c of the hook portion 65. The pull-out member 66 is installed without rotating, and the disk-shaped part 66a is installed so as to always face the inner end surface 65a of the hooking part 65 of the rotating connecting shaft 64 from the inner side in the axial direction.

The pull-out member 66 is provided with a plurality of wires 67 extending outward in the axial direction at a plurality of locations in at least three circumferential positions of the cylindrical portion 66b. The wire 67 is prepared so that it can be pulled from the outside by passing through at least the through hole 68h of the case member 68 that houses the rotary electric machine 120.

As a result, the pull-out member 66 slides toward the outer side in the axial direction of the rotor 123 by pulling the plurality of wires 67 from the outside of the case member 68 at the same time or in sequence with good balance so as not to incline. To be done. Then, the pull-out member 66 can be moved by causing the disk-shaped portion 66 a to abut against the inner end surface 65 a of the hook portion 65 of the connecting shaft 64. Therefore, in the connecting shaft 64, the tip portion 64a is pulled out from the through holes 61a, 62a, 63a of the outer ring member 61 and the inner ring members 62, 63, and the rotor body 124 and the cylindrical member 125 are relatively freely rotated. Release as much as possible. That is, the pull-out member 66 constitutes, together with the wire 67, a release mechanism for releasing the connection state between the rotor body 124 and the cylindrical member 125.

In short, the power transmission device 10 includes, as shown in the schematic view of FIG. 2A, the output shaft 111 of the engine 110, the intermediate rotary shaft 12 connected to the output rotary shaft 13 of the transmission 130, and the friction clutch. A connection state or a disconnection state is set by 15. Further, the power transmission device 10 includes a power transmission path that can switch the rotor 123 of the rotary electric machine 120 connected to the intermediate rotating shaft 12 from the connected state to the disconnected state by the rotor actual movement mechanism 60.

As shown in the switching table of FIG. 2B, this power transmission device 10 causes the friction clutch 15 and the rotor actual drive mechanism 60 to function appropriately according to the state of the rotary electric machine 120. For example, when the rotary electric machine 120 is normal, the power transmission device 10 supplies hydraulic pressure (including hydraulic pressure cutoff) to the switching oil chamber 43 of the actuator 17 in accordance with the traveling state of the vehicle 100, and thus the rotor of the rotary electric machine 120. The engine 110 is connected to or disconnected from the intermediate rotating shaft 12 while maintaining the state in which the 123 is connected to the intermediate rotating shaft 12. In addition, when the rotary electric machine 120 is abnormal, the power transmission device 10 causes the rotor actual driving mechanism 60 to function as described below, so that the rotary electric machine 120 maintains the connection state with the intermediate rotating shaft 12 of the engine 110. The rotor body 124 can be separated from the intermediate rotating shaft 12.

The power transmission device 10 controls the hydraulic pressure supply to the switching oil chamber 43 of the actuator 17 by the ECU 50 executing the control program stored in the memory 51 based on various kinds of acquired information from the sensors and the like. The friction clutch 15 is appropriately operated. Further, in the power transmission device 10, the pulling member 66 of the rotor actual movement mechanism 60 is pulled by the wire 67, so that the releasing function for canceling the connection state between the rotor body 124 and the cylindrical member 125 of the rotary electric machine 120 is performed. It

For example, the ECU 50 controls the current flowing from the power supply circuit 129 to the three-phase winding coil 122 of the stator 121 of the rotating electric machine 120 in accordance with the operation instruction from the driver, and also acquires various running conditions of the vehicle 100. The operation stop of the engine 110 is controlled based on the detection information of the sensor group. At this time, the ECU 50 controls the hydraulic pressure supply to the switching oil chamber 43 of the actuator 17 to switch between the power transmission state and the power cutoff state of the rotational power of the engine 110 by the power transmission device 10.

The ECU 50 is connected with various sensors 55 for confirming the soundness of the rotary electric machine 120 and a liquid crystal panel 57. The ECU 50 shuts off the power supply to the three-phase winding coil 122 of the stator 121 and supplies the hydraulic pressure to the switching oil chamber 43 of the actuator 17 when, for example, an abnormality in the rotary electric machine 120 is detected. Here, based on the detection information of the speed sensor 55a that detects the number of rotations (rotational speed) of the rotor 123, the ECU 50 determines that the driving of the rotary electric machine 120 has been hindered due to, for example, an abnormality in the bearing 126. To do. Further, the ECU 50 interferes with the driving of the rotary electric machine 120 due to, for example, an abnormality in the inverter Inv or the like, based on the detection information of the current sensor 55b that detects the value of the current supplied to the three-phase winding coil 122 of the stator 121. Is determined to have occurred. That is, the ECU 50 constitutes a control unit including the abnormality detection unit.

Further, the ECU 50 is adapted to send an alarm message stored in the memory 51 to the liquid crystal panel 57 for display when an abnormality is detected in the rotary electric machine 120. Therefore, the driver can immediately grasp the malfunction of the rotary electric machine 120 and take appropriate measures. For example, the driver who grasps the malfunction of the rotating electric machine 120 can quickly pull the wire 67 after pulling the vehicle 100 close to the road shoulder. By this operation, the pull-out member 66 of the rotor actual drive mechanism 60 is slid so as to pull out the connecting shaft 64 from the through holes 61a, 62a, 63a of the outer ring member 61 and the inner ring members 62, 63, and the intermediate rotary shaft 12 The cylindrical member 125 integrated with the input shaft 131) of the machine 130 is separated from the rotor body 124 of the rotating electric machine 120 to be freely rotatable.

As a result, when the rotating electric machine 120 is out of order, the ECU 50 can connect the engine 110 to the intermediate rotating shaft 12 to secure the traveling ability of the vehicle 100 and can notify the malfunction of the rotating electric machine 120. A driver or the like who has grasped the malfunction of the rotary electric machine 120 can freely rotate the intermediate rotary shaft 12 with respect to the rotor body 124 simply by pulling the wire 67. Therefore, the rotary electric machine 120 can freely rotate the rotor main body 124 and the cylindrical member 125, which form the rotor 123, into an inoperative and ineffective state. From this, the rotary electric machine 120 causes the rotor body 124 of the rotor 123 to be rotated by the rotation of the input shaft 131 of the transmission 130 to cause a rotational load, or recharge current to cause overcharge of the battery Ba. It is possible to avoid teshimae.

Therefore, the power transmission device 10 causes the friction clutch 15 to function by using the actuator 17 that slides the piston member 41 in the axial direction by supplying the hydraulic pressure to the switching oil chamber 43, thereby making the transmission path of the rotational power of the engine 110. It can be formed or blocked. Further, when an abnormality occurs in the rotary electric machine 120, the power transmission device 10 forms a transmission path of the rotary power of the engine 110 to secure the traveling function of the vehicle 100, and energizes the rotary electric machine 120. By displaying the malfunction of the rotary electric machine 120 on the liquid crystal panel 57 to notify the malfunction while the power is cut off, it is possible to urge the work of disconnecting the rotor body 124 to substantially cut off the power transmission path.

As described above, in the power transmission device 10 of the present embodiment, the piston member 41 is slid by the switching oil chamber 43 of the actuator 17 to cause the friction clutch 15 to function, so that the rotational power transmission path of the engine 110 is reduced. It can be formed or cut off, and the transmission path of the rotational power of the rotary electric machine 120 can function the rotor actual driving mechanism 60 to be in the cutoff state only by pulling the wire 67. As a result, the power transmission device 10 can be made compact with the actuator 17 as one set, and the power source as a whole can be miniaturized.

(Second embodiment)
FIG. 3 is a diagram illustrating an example of a hybrid vehicle according to the second embodiment of the present invention. Here, since the present embodiment is configured substantially the same as the above-described embodiment, the same reference numerals are given to the same configurations and the characteristic portions will be described.

In FIG. 3, the power transmission device 70 mounted on the vehicle 100 includes an input rotary shaft 11, an intermediate rotary shaft 12, an output rotary shaft 13, and a friction clutch 15, and the rotor actual drive mechanism 60 in the above-described embodiment. Instead of this, a rotor actual movement mechanism 80 is installed.

In the rotary electric machine 120 of this embodiment, the permanent magnet 78 is embedded in the rotor body 124. In this rotary electric machine 120, as in the above-described embodiment, the rotating magnetic force (magnetic flux) generated by energizing the three-phase winding 122 of the stator 121 is linked to the rotor body 124 in which the permanent magnet 78 is embedded. As a result, the rotor 123 is rotationally driven to output a driving force.

The permanent magnet 78 is formed in a rod shape having a length about the width of the rotor body 124 in the axial direction. The rotor body 124 of this embodiment is formed with an insertion hole 74 extending in the axial direction so that the permanent magnet 78 can be fitted therein. The insertion holes 74 are formed at a plurality of positions in the circumferential direction of the rotor body 124 where the permanent magnets 78 are installed, in such a shape that the permanent magnets 78 are slidable in the axial direction and are opened on the end face 124a side. The insertion hole 74 is formed so that it can be removed from the rotor main body 124 by sliding the permanent magnet 78 in the axial direction by the rotor actual movement mechanism 80, similarly to the connecting shaft 64 in the above-described embodiment. ing. The insertion hole 74 holds the permanent magnet 78 so as not to fall off unless a load is applied in the axial direction to slide it. That is, the rotor 123 of the present embodiment is rotationally driven (actually operated) by receiving the rotational magnetic force from the stator 121 by inserting the permanent magnet 78 into the insertion hole 74 of the rotor body 124 and making it embedded. You can

The rotor actual movement mechanism 80 is constructed by including the extraction member 86 together with the permanent magnet 78 itself.

The permanent magnet 78 of the present embodiment has a cross-sectional shape that can be fitted from the tip end 78a side into the insertion holes 74 that are open at a plurality of positions in the circumferential direction of the rotor body 124, similarly to the connecting shaft 64 of the above-described embodiment. It is formed in a rod shape. Further, the permanent magnet 78 includes, for example, a magnet portion 78M which is inserted into the insertion hole 74 of the rotor body 124 to be embedded and a support portion 78S which is linearly continuous from the magnet portion 78M in the same axial direction. It is integrally formed by being screwed on the outside of the insertion hole 74. The permanent magnet 78 has a hooking portion formed in a disk shape having a larger diameter than that of the supporting portion 78S side at the end portion of the supporting portion 78S on the side opposite to the magnet portion 78M, similarly to the connecting shaft 64 in the above-described embodiment. Equipped with 79.

Similar to the above-described embodiment, the extraction member 86 is formed in a flange shape having the same diameter as the insertion hole 74 of the rotor body 124 so as to be located in the vicinity of the hooked portion 79 of the support portion 78S of the permanent magnet 78. , A disk-shaped portion 86a and a cylindrical portion 86b. The disk-shaped portion 86a of the extraction member 86 is located on the inner side in the axial direction of the rotor 123 with respect to the hook portion 79 of the permanent magnet 78, faces the inner end surface 79a of the hook portion 79, and the cylindrical portion 86b is permanent. The magnet 78 is located inward of the hook portion 79 of the magnet 78 in the radial direction of the rotor 123, and is installed so as to face the outer peripheral surface 79c of the hook portion 79. The pull-out member 86 is installed without rotating, and is installed such that the disk-shaped portion 86a always faces the inner end surface 79a of the hooking portion 79 of the rotating permanent magnet 78 from the inner side in the axial direction.

Similar to the pulling member 66 of the above-described embodiment, the pulling member 86 is provided with the wire 67 that is pulled through the through hole 68h of the case member 68 of the rotary electric machine 120.

As a result, the pull-out member 86 is slid outward in the axial direction of the rotor 123 by the plurality of pulled wires 67, so that the disk-shaped portion 86 a abuts the inner end surface 79 a of the hook portion 79 of the permanent magnet 78. Can be moved. Therefore, in the permanent magnet 78, the magnet portion 78M is pulled out from the insertion hole 74 of the rotor body 124, and the rotor body 124 integrated with the intermediate rotation shaft 12 is released so as to be freely rotatable with respect to the stator 121. That is, the pull-out member 86 constitutes a release mechanism together with the wire 67 that releases the cooperation of the rotor 123 with the stator 121.

In short, although not shown in the drawings, the power transmission device 70 also includes the output shaft 111 of the engine 110, the intermediate rotary shaft 12 connected to the output rotary shaft 13 of the transmission 130, as in the above-described embodiment. The friction clutch 15 causes the connected state or the disconnected state. Further, the power transmission device 70 includes a power transmission path that can switch the rotor 123 of the rotary electric machine 120 connected to the intermediate rotating shaft 12 from the connected state to the disconnected state by the rotor actual movement mechanism 80.

As described above, also in the power transmission device 70 of the present embodiment, it is possible to obtain the same operational effects as those of the above-described embodiment, and further, by including the rotor actual movement mechanism 80 capable of extracting the permanent magnet 78, the above-described Since the outer ring member 61 and the inner ring members 62 and 63 in the embodiment are not necessary, the power source as a whole can be further downsized.

Although an embodiment of this invention has been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of this invention. All such modifications and equivalents are intended to be included in the following claims.

10, 70... Power transmission device 11... Input rotary shaft 12... Intermediate rotary shaft 13... Output rotary shaft 15... Friction clutch 17... Actuator 41... Piston member 51... Memory 55... Various sensors 57 ......Liquid crystal panel 60, 80 ......Rotor actual movement mechanism 61 ......Outer ring members 61a, 62a, 63a ......Through hole 62 ......Inner ring member 64 ......Coupling shafts 65, 79 ......Hooking portions 66, 86... ... Pull-out member 67 ... Wire 68 ... Case member 74 ... Insert holes 78, 128 ... Permanent magnet 78M ... Magnet part 78S ... Support part 100 ... Hybrid vehicle 101 ... Drive wheel 110 ... Engine 120 ......Rotary electric machine 121 ......Stator 123 ......Rotor 124 ......Rotor body 125 ......Cylindrical member 126 ......Bearing 130 ......Transmission 140 ......Differential device

Claims (1)

An internal combustion engine and a rotary electric machine are mounted as power sources, and a power transmission path for transmitting the rotary power output from the internal combustion engine or the rotary electric machine to a transmission is provided, and only the rotary electric machine or the internal combustion engine and A hybrid vehicle that uses both of the rotating electric machines as a driving power source,
The rotating electrical machine includes a rotor rotatably housed in a stator and rotationally driven to output rotational power transmitted to the transmission by receiving a rotating magnetic force from the stator side,
The rotor is a shaft that switches to a state in which rotational power cannot be transmitted by pulling it out of the rotor body in the axial direction, or a state in which rotational force cannot be generated even when receiving the rotational magnetic force, and the shaft in the axial direction. And a mechanism for sliding the rotor body to pull out the rotor body from the inside of the rotor body.

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