JP7242004B2 - Rotating electric machine of vehicle - Google Patents

Description

The present invention relates to the technical field of rotating electric machines such as motors and generators mounted on vehicles.

In recent years, vehicles using rotating electric machines such as motors and generators, specifically electric vehicles and hybrid vehicles, have been developed. Since such vehicles use high-voltage electric power, special safety measures against vehicle collisions are being considered. For example, Patent Literature 1 discloses a technique for preventing disconnection of a high-voltage power cable and breakage of a connector. Specifically, Patent Document 1 describes a motor connector protection structure that protects a connector arranged near a side member of a motor case. It is disclosed to attach a metal protector to prevent the motor case between the side member and the connector and to cover the corner of the motor case and the connector.

JP 2013-66327 A

By the way, in general hybrid vehicles and the like, a heavy engine tends to be arranged at an end portion in the vehicle width direction of the vehicle driving system. However, in this case, the side of the vehicle on which the engine is arranged becomes heavy, and there is a problem that the weight balance between the left and right sides of the vehicle is deteriorated. Furthermore, since the heavy engine is arranged in the vicinity of the side of the vehicle, the moment of inertia around the yaw axis and the roll axis of the vehicle increases, resulting in a problem of degraded vehicle motion performance.

In order to solve such a problem, for example, a rotating electric machine such as a generator may be arranged at the vehicle width direction end of the vehicle drive train, and the engine may be arranged at a position away from the vehicle width direction end. In this case, it is conceivable to dispose the rotary electric machine adjacent to the inner side of the front side member in the vehicle width direction, and to support the rotary electric machine with respect to the front side member by a mount member. In addition, in order to electrically connect the rotating electrical machine to an external component (such as a power conversion device), it is conceivable to attach a terminal support member for supporting terminals to be connected to the rotating electrical machine to the upper surface of the rotating electrical machine. be done. However, in such a case, when the front part of the vehicle collides (for example, when the pole collides), the rotating electrical machine moves to the rear of the vehicle, and the terminal support member of the rotating electrical machine interferes with the mounting member of the front side member. Sometimes.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the prior art. The purpose is to protect the support member.

To achieve the above object, the present invention provides a rotary electric machine for a vehicle that is supported by a mount member on a front side member that extends in the longitudinal direction of the vehicle and that is arranged adjacent to and inward of the front side member in the vehicle width direction. a terminal support member attached to the upper surface of the rotating electrical machine on the front side of the vehicle relative to the portion supported by the mounting member and supporting terminals connected to the rotating electrical machine; and when the rotating electrical machine moves rearward of the vehicle. a receiving member for receiving a load applied from the mounting member to the terminal supporting member, the receiving member being provided at a position on the vehicle rear side and vehicle width direction outer side of the terminal supporting member close to the mounting member. , characterized in that

In the present invention configured as described above, the rotary electric machine of the vehicle is supported by the front side member by the mount member, and is arranged adjacent to the inner side of the front side member in the vehicle width direction. In addition, the rotary electric machine of the vehicle includes a terminal support member attached to an upper surface on the front side of the vehicle relative to the mount member, and a load applied from the mount member to the terminal support member when the rotary electric machine moves rearward of the vehicle. and a receiving member for receiving. In particular, the receiving member is provided at a position close to the mounting member on the vehicle rear side and vehicle width direction outer side of the terminal supporting member. As a result, when the front of the vehicle collides (for example, with a pole) and the rotary electric machine moves rearward of the vehicle, the load applied from the mount member to the terminal support member can be appropriately received by the receiving member. can. Therefore, it is possible to more reliably prevent breakage of the terminal support member due to interference between the terminal support member and the mount member in the event of a frontal collision of the vehicle.
In addition, the rotary electric machine of the vehicle in the present invention is at least a rotating body and a rotating body that functions to be rotationally driven by electric power supplied from the outside, or to be rotationally driven by a driving force supplied from the outside to generate electric power. An electrical device with a rotating shaft. Specifically, the rotating electric machine of the vehicle is a motor and/or a generator.

In the present invention, the receiving member is preferably a positioning member for positioning the terminal supporting member with respect to the case of the rotary electric machine.
According to the present invention configured as described above, the receiving member is also used as the positioning member, in other words, the receiving member is provided with a positioning function. With such a receiving member, both the function of receiving the load applied to the terminal supporting member and the function of positioning the terminal supporting member can be realized with a simple configuration.

In the present invention, preferably, the receiving member is provided on the outer circumference of the fixing member for fixing the terminal support member to the case of the rotating electrical machine.
According to the present invention configured in this way, the receiving member and the fixing member can be provided on the same axis, and both can be appropriately arranged at positions close to the mounting member.

In the present invention, preferably, the terminal supporting member has a substantially rectangular shape in a plan view, and the receiving members are provided at two diagonal corners of the substantially rectangular shape.
According to the present invention configured as described above, the receiving members as the positioning members are provided at the two diagonal corners of the substantially rectangular terminal support member. can be reliably positioned.

In the present invention, preferably, a power conversion device electrically connected to the rotating electrical machine via a terminal support member is provided inside the rotating electrical machine in the vehicle width direction.
According to the present invention configured in this way, the harness (wiring) between the rotary electric machine and the power converter can be appropriately shortened.

In the present invention, preferably, the rotation shaft of the rotary electric machine is arranged to extend along the vehicle width direction.
According to the present invention configured as described above, when the rotary electric machine is horizontally arranged along the vehicle width direction, the effects as described above can be obtained.

Advantageous Effects of Invention According to the present invention, in a rotary electric machine for a vehicle having a terminal support member supported by a front side member via a mount member, the terminal support member can be protected in the event of a vehicle collision.

1 is a plan view showing a state in which a vehicle drive system according to an embodiment of the present invention is mounted on a vehicle; FIG. 1 is a plan view of a vehicle drive system according to an embodiment of the invention; FIG. 1 is a front view of a vehicle drive system according to an embodiment of the invention; FIG. FIG. 2 is a perspective view of a generator and a converter according to an embodiment of the present invention, viewed obliquely from the upper left front; FIG. 3 is a cross-sectional view along the vehicle width direction of the mount member and the like according to the embodiment of the present invention; 1 shows a perspective view of a terminal support member according to an embodiment of the present invention; FIG. Fig. 3 shows a generator with a terminal support member removed according to an embodiment of the present invention; Fig. 2 shows a plan view of a terminal support member, a mounting member and a front side member of a generator according to an embodiment of the invention; FIG. 3 is a cross-sectional view along the vehicle vertical direction of the receiving member and the like according to the embodiment of the present invention;

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotating electrical machine for a vehicle according to embodiments of the present invention will now be described with reference to the accompanying drawings.

First, with reference to FIG. 1, the overall structure of a vehicle drive system including a rotary electric machine for a vehicle according to the present embodiment will be described. FIG. 1 is a plan view showing a state in which a vehicle drive system according to an embodiment of the present invention is mounted on a vehicle.

As shown in FIG. 1, a vehicle drive system 1 according to the present embodiment is mounted on a vehicle 11 and includes an engine (internal combustion engine) 2, a drive motor 4, a generator (generator) 6 as a rotary electric machine, and a drive motor 4. A transaxle 10 including a reduction mechanism (reduction gear) and a differential mechanism for reducing the rotation output of is integrated. In this embodiment, basically, the drive shaft 12 of the vehicle 11 is driven by the driving force of the drive motor 4 and is not directly driven by the power generated by the engine 2 .

The vehicle drive device 1 is housed in a motor room 11a in the front part of the vehicle 11, and the motor room 11a is covered with a bonnet 11b. In particular, the drive motor 4, the transaxle 10, the engine 2, and the generator 6, which constitute the vehicle drive system 1, are arranged in the vehicle width direction of the vehicle 11 in this order. That is, the vehicle drive device 1 is arranged between front side members (body side frames) 11c on both sides of the vehicle 11 and below the bonnet 11b. In addition, the drive motor 4 and the generator 6 are arranged adjacent to each other on the inner side in the vehicle width direction of the left and right front side members 11c.

The engine 2 is supplied with intake air through an intake pipe 2a after passing through an air cleaner 28 that removes dust in the air, and generates power by combusting a mixture of this intake air and fuel. The power generated by the engine 2 drives the input shaft of the generator 6 to generate electric power. The power generated by the generator 6 is stored as electrical energy in a lithium ion battery 20, which is a storage battery. A rotary piston engine is employed as the engine 2 in this embodiment. Further, the lithium ion battery 20 is provided, for example, in the lower portion (bottom surface) of the vehicle 11 or the like.

The drive motor 4 is driven by electric energy stored in the lithium ion battery 20 and is configured to drive the drive shaft 12 of the vehicle 11 . The output shaft of the drive motor 4 is connected to the input shaft of a transaxle 10 which is a reduction mechanism, and the rotational output of the drive motor 4 drives the drive shaft 12 via the transaxle 10 . Further, the drive motor 4 is configured to regenerate the kinetic energy of the vehicle 11 into electrical energy to generate AC power when the vehicle 11 is decelerating. In this embodiment, an alternating-current permanent magnet motor is employed as the drive motor 4 . More specifically, the drive motor 4 has a rotor, a stator, an output shaft (rotating shaft), and the like (none of which are shown), and rotates the rotor when an alternating current is applied to coils forming the stator. In addition, when the vehicle 11 is decelerated, the drive motor 4 rotates its output shaft and rotor, and induced current flows through the coils forming the stator to generate AC power.

The generator 6 is configured to generate AC power from the power generated by the engine 2 , and its input shaft is rotationally driven by the output shaft of the engine 2 . The generator 6 is electrically connected to the converter 8 c , and AC power generated by the generator 6 is converted into DC power by the converter 8 c and stored in the lithium ion battery 20 . More specifically, the generator 6 has a rotor (not shown), a stator, an input shaft (rotating shaft), and the like. flows to generate AC power. It should be noted that the generator 6 corresponds to an example of the "vehicle rotary electric machine" in the present invention.

The transaxle 10 includes a reduction mechanism (reduction gear) and a differential mechanism arranged between the drive motor 4 and the engine 2 in the width direction of the vehicle 11, and transmits the power of the drive motor 4 to the wheels (not shown) of the vehicle 11. ) in the middle of the transmission path. Rotation of the output shaft of the drive motor 4 is decelerated by the transaxle 10 and transmitted to wheels (not shown) via the drive shaft 12 . In this embodiment, the transaxle 10 is used as the speed reduction mechanism, but a transmission having a speed change function may be used as the speed reduction mechanism.

The inverter 8b is arranged above the drive motor 4 (see also FIG. 3 below) and is configured to convert DC power supplied from the lithium ion battery 20 into AC power. The electric power converted into alternating current by the inverter 8b is supplied to the drive motor 4, and the drive motor 4 is driven. Furthermore, on the inverter 8b, a junction box 8e is arranged to accommodate terminals for connecting, branching, and relaying electric wires of the inverter 8b, the converter 8c, the lithium ion battery 20, and the like (FIG. 3). . Note that the generator 6, the converter 8c, the junction box 8e, and the lithium ion battery 20 are electrically connected in this order, as indicated by the dashed lines in FIG.

The converter 8c is arranged above the engine 2 and is configured to convert the AC power generated by the generator 6 and the AC power regenerated by the drive motor 4 into DC power. In this embodiment, a rotary piston engine is applied to the engine 2 as described above. Since the vertical size of such a rotary piston engine is relatively small, a sufficient space is formed above the engine 2. Therefore, the converter 8c can be arranged above the engine 2.

The inverter 8b and the converter 8c include power semiconductor elements such as switching IGBTs (insulated gate bipolar transistors), MOSFETs (MOS field effect transistors), and rectifying diodes (not shown). It consists of a circuit board. Also, the converter 8c corresponds to an example of the "power converter" in the present invention.

Thus, in the vehicle drive system 1 according to this embodiment, the drive motor 4, the engine 2, and the generator 6 are arranged in this order in the vehicle width direction of the vehicle 11. As shown in FIG. As a result, since the relatively heavy engine 2 is located between the drive motor 4 and the generator 6, the weight balance between the left and right sides of the vehicle 11 is less likely to be disturbed, and deterioration of the weight balance can be suppressed. In addition, since the engine 2 is positioned between the drive motor 4 and the generator 6, the engine 2 is positioned relatively inside in the vehicle width direction, thereby reducing the moment of inertia of the vehicle 11 around the yaw axis and roll axis. It is possible to suppress the deterioration of exercise performance.

Further, in the vehicle drive system 1 according to the present embodiment, since a rotary piston engine is employed as the engine 2, even if it is arranged between the drive motor 4 and the generator 6, it will not be an obstacle in the motor room 11a. Therefore, even when the engine 2 is arranged between the drive motor 4 and the generator 6, the space in the motor room 11a can be effectively utilized.

Next, with reference to FIGS. 2 and 3 (also refer to FIG. 1 as appropriate), the arrangement structure of each component of the vehicle drive system 1 according to the embodiment of the present invention will be described. FIG. 2 is a plan view (top view) of the vehicle drive system 1 according to the embodiment of the present invention. 2 shows only essential parts of the components shown in FIG. 1 (for example, illustration of the inverter 8b and the air cleaner 28 is omitted). FIG. 3 is a front view of the vehicle drive system 1 according to the embodiment of the invention. 3 also shows only essential parts of the constituent elements shown in FIG. 1 (in FIG. 3, unlike FIG. 2, the inverter 8b, the air cleaner 28, etc. are shown).

In the vehicle drive system 1 according to the present embodiment, as shown in FIG. 3, in a front view, an oil pan 2d is provided below an engine body 2c, and an output shaft 2x of the engine 2 (see the broken line in FIG. It is offset from the output shaft 4d of the drive motor 4 (see the dashed line in FIG. 3) on the upper side of the vehicle. By offsetting the output shaft 2x of the engine 2 above the output shaft 4d of the drive motor 4 in this way, the capacity of the oil pan 2d below the engine body 2c can be appropriately ensured. Note that the output shaft 2x of the engine 2 is normally arranged at a substantially center position of the engine 2 in the vertical direction of the vehicle (the center position between the upper end and the lower end of the engine 2), and the output shaft 4d of the drive motor 4 It is arranged at substantially the center position of the motor 4 in the vertical direction of the vehicle (the center position between the upper end and the lower end of the drive motor 4). Therefore, when the output shaft 2x of the engine 2 is offset upward with respect to the output shaft 4d of the drive motor 4, the center position of the engine 2 in the vehicle vertical direction is higher than the center position of the drive motor 4 in the vehicle vertical direction. will be located in

On the other hand, since the output shaft 2x of the engine 2 and the input shaft 6d of the generator 6 are connected, the output shaft 2x and the input shaft 6d are positioned substantially on the same axis (broken line in FIGS. 2 and 3). reference).

Further, in the vehicle drive system 1 according to the present embodiment, as shown in FIG. 2, the front end portion of the engine 2 is located on the front side of the vehicle with respect to the front end portion of the drive motor 4 in plan view. As a result, an object coming toward the vehicle driving device 1 from the front can hit the engine 2 before the driving motor 4 when the front part of the vehicle collides, and the driving motor 4 is properly protected by the engine 2.例文帳に追加be able to.

In the vehicle drive system 1 according to the present embodiment, as shown in FIG. 2, the output shaft 2x of the engine 2 (see the broken line in FIG. 2) is aligned with the output shaft 4d of the drive motor 4 (see the broken line in FIG. 2) in plan view. dashed line in )), and a heat exchanger 2e as an accessory of the engine 2 (engine accessory) is positioned in front of the drive motor 4 and the transaxle 10 and in front of the engine body 2c. (see also Figure 3). Normally, the output shaft 2x of the engine 2 is arranged at substantially the center position of the engine 2 in the longitudinal direction of the vehicle (the center position between the right end and the left end of the engine 2), and the output shaft 4d of the drive motor 4 , in the longitudinal direction of the vehicle (the center position between the right end and the left end of the drive motor 4). Therefore, when the output shaft 2x of the engine 2 is offset forwardly with respect to the output shaft 4d of the drive motor 4, the center position of the engine 2 in the vehicle front-rear direction is forward of the center position of the drive motor 4 in the vehicle front-rear direction. will be located in

The heat exchanger 2e has an oil cooler for cooling the oil, a water pump for supplying water for cooling the oil to the oil cooler, an oil filter for removing impurities in the oil, and the like (these are not shown in the figure). omitted). The water pump is driven by the output shaft 2x of the engine 2. If the water pump shaft is arranged on the same axis as the output shaft 2x, the size in the vehicle width direction becomes large. (In this case, power is transmitted from the output shaft 2x to the shaft of the water pump via a chain). Therefore, the heat exchanger 2e including the water pump is provided inside the engine body 2c in the vehicle width direction, so that the heat exchanger 2e is positioned in front of the drive motor 4 and the transaxle 10. As shown in FIG.

Ultimately, by arranging the output shaft 2x of the engine 2 in front of the vehicle with respect to the output shaft 4d of the drive motor 4, a space can be formed in front of the drive motor 4 and the transaxle 10. Then, such a space is used to arrange the heat exchanger 2e as described above (specifically, the heat exchanger 2e is arranged so as to overlap the transaxle 10 when viewed from the front). ing). As a result, it is possible to appropriately suppress an increase in the size of the vehicle drive device 1 in the vehicle width direction. In addition, by arranging the heat exchanger 2e in front of the drive motor 4 and the transaxle 10, an object approaching the vehicle drive system 1 from the front can The heat exchanger 2e can be applied before the heat exchanger 2e, and the drive motor 4 and the transaxle 10 can be appropriately protected by the heat exchanger 2e.

It should be noted that the auxiliary equipment of the engine 2 is not limited to the use of the heat exchanger 2e as described above. The auxiliary equipment of the engine 2 is, for example, a device necessary for operating the engine 2, and in another example, a generator (alternator) driven by the power generated by the engine 2, an injection pump, etc. can be applied. can.

Further, in the vehicle drive system 1 according to the present embodiment, as shown in FIGS. 1 and 2, the converter 8c is arranged above the engine 2 so as to overlap the upper surface of the engine 2 in plan view. In particular, the outer end of the converter 8c in the vehicle width direction is positioned inside the outer end of the engine 2 in the vehicle width direction, and the front end of the converter 8c is positioned further to the rear of the vehicle than the front end of the engine 2. As a result, the entire converter 8c overlaps the engine 2 in plan view (FIG. 2). By arranging the converter 8c in this way, it is possible to prevent the front side member 11c from deforming and interfering with the converter 8c in the event of a front collision of the vehicle. Specifically, in the event of a front collision of the vehicle, the deformed front side member 11c or the like can hit the engine 2 before the converter 8c, and the engine 2 can appropriately protect the converter 8c.

1 and 3, the inverter 8b and the junction box 8e are arranged above the drive motor 4 so as to overlap the upper surface of the drive motor 4 in plan view. Specifically, the inverter 8b and the junction box 8e are arranged on the drive motor 4 so that the outer ends of the inverter 8b and the junction box 8e in the vehicle width direction are located inside the outer ends of the drive motor 4 in the vehicle width direction. . As a result, the drive motor 4 can appropriately protect the inverter 8b and the junction box 8e in the event of a vehicle front collision.

On the other hand, in the vehicle drive system 1 according to the present embodiment, as shown in FIGS. 1 and 3, the air cleaner 28 above the generator 6 is offset outward in the vehicle width direction with respect to the converter 8c. . As a result, it is possible to appropriately prevent the damaged air cleaner 28 from interfering with the converter 8c in the event of a front collision of the vehicle. An intake pipe 2a that connects the air cleaner 28 and the engine 2 is spaced apart from the converter 8c so as to pass through the outside of the converter 8c in the vehicle width direction and above the converter 8c in the vehicle vertical direction. That is, the intake pipe 2a is positioned so that the intake pipe 2a does not overlap the converter 8c in plan view (FIG. 1) and the intake pipe 2a does not overlap the converter 8c in front view (FIG. 3). are spaced apart from each other. As a result, it is possible to appropriately prevent the damaged intake pipe 2a from interfering with the converter 8c in the event of a front collision of the vehicle.

Next, with reference to FIG. 4, the electrical connection between generator 6 and converter 8c according to an embodiment of the present invention will be described. FIG. 4 is a perspective view of the generator 6 and the converter 8c according to the embodiment of the present invention, viewed obliquely from the upper left front.

As shown in FIG. 4, the generator 6 and the converter 8c are composed of a terminal support member 42 (a member for supporting terminals connected to the generator 6, which will be described in detail later) provided on the generator 6, and a terminal support member 42 provided on the converter 8c. The power connector 44 and the harness (wire harness) 40 connecting the terminal support member 42 and the power connector 44 are electrically connected. As described above, since the generator 6 is arranged adjacent to the engine 2 in the vehicle width direction, and the converter 8c is arranged immediately above the engine 2, the converter 8c is arranged obliquely above the generator 6, so that the harness 40 extends obliquely upward from the generator 6 to the converter 8c. Further, as shown in FIG. 4, the generator 6 is supported by the front side member 11c via two mount members 30 and 31. As shown in FIG. Specifically, the mount members 30 and 31 support the generator 6 at positions on the vehicle rear side of the terminal support member 42 .

Now, with reference to FIG. 5, the configuration of the mount members 30, 31 according to the embodiment of the present invention will be described. FIG. 5 is a cross-sectional view along the vehicle width direction of the mount members 30, 31, etc. according to the embodiment of the present invention (more specifically, a perspective cross-sectional view seen obliquely from the upper right rear). 5 also shows cross-sectional views of the front side member 11c and the case 6e of the generator 6 in addition to the mount members 30 and 31. As shown in FIG.

As shown in FIG. 5, the mount member 30 is fixed to the front side member 11c with a bolt (not shown) and has a U-shaped cross section. Further, the mount member 30 has a rubber 30b attached in a space 30a formed by the U-shaped cross section. On the other hand, the mount member 31 has one end fixed in the space 30a of the mount member 30 and the other end fixed to the upper surface of the generator 6 on the vehicle rear side of the terminal support member 42 with a bolt 31a. In particular, one end of the mount member 31 is supported within the space 30a of the mount member 30 via the rubber 30b. As a result, vibration and noise of the vehicle drive system 1 including the generator 6 supported by the mount member 31 are absorbed. In FIG. 5, reference numeral 42a denotes a cover attached to the upper surface of the terminal support member 42. This cover 42a externally connects the terminals (connected to the busbars in the generator 6) in the terminal support member 42. are not exposed to

Next, with reference to FIGS. 6 and 7, the terminal support member 42 of the generator 6 according to the embodiment of the invention will be specifically described. FIG. 6 shows a perspective view of terminal support member 42 in accordance with an embodiment of the present invention. 6 shows the terminal support member 42 with the cover 42a (FIGS. 4 and 5) removed for convenience of explanation. FIG. 7 also shows the generator 6 with the terminal support member 42 removed according to an embodiment of the present invention.

As shown in FIG. 6, the terminal support member 42 has a substantially rectangular shape in a plan view, and is mainly connected to each wire of the harness 40 and extends from inside the generator 6 with a plurality of bus bars 6f. (FIG. 7), and a housing-like main body 42c that supports and accommodates the terminals 42b. The bus bar 6f is a conductor for carrying a large amount of current generated by the generator 6, and has an L-shaped tip. Further, the terminal support member 42 has four bolts 42d (fixing members) provided at the four corners of the substantially rectangular shape, respectively, screwed into four bolt holes 6g (FIG. 7) provided in the case 6e of the generator 6. By doing so, it is fixed to the generator 6 . The terminal support member 42 has a cover 42a (not shown) attached to the upper surface of the body portion 42c using four bolts 42e.

Next, with reference to FIG. 8, the problems that occur when the vehicle 11 collides, etc. described in the above "Problems to be Solved by the Invention" will be specifically described. FIG. 8 shows a plan view (top view) of the terminal support member 42, the mount members 30, 31 and the front side member 11c of the generator 6 according to the embodiment of the present invention. In FIG. 8, for convenience of explanation, the outline outline of the upper surface of the case 6e of the generator 6 is indicated by a dashed line.

As described above, the terminal support member 42 is attached to the upper surface of the case 6 e of the generator 6 at a position on the front side of the vehicle relative to the portions supported by the mount members 30 and 31 . With such a positional relationship between the terminal support member 42 and the mount members 30 and 31, as shown in FIG. 1 moves to the rear of the vehicle, the terminal support member 42 may interfere with the mount member 30 . Specifically, when the generator 6 moves to the rear of the vehicle due to a collision, the terminal support member 42 attached to the generator 6 moves to the rear of the vehicle (mount member attached to the generator 6) as indicated by an arrow A1. 31 also moves to the rear of the vehicle), but the mount member 30 attached to the front side member 11c does not move, so the terminal support member 42 may interfere with the mount member 30 in some cases. In this case, for example, the terminal support member 42 collides with the mount member 30 , which may damage the terminal support member 42 or remove the terminal support member 42 from the case 6 e of the generator 6 .

Strictly speaking, the terminal support member 42 hardly overlaps the mount member 30 when viewed in the front-rear direction of the vehicle. Therefore, when the vehicle 11 receives an impact in the front-rear direction in a front-end collision of the vehicle, the generator 6 moves rearward substantially horizontally in the front-rear direction. 42 does not interfere with the mount member 30 . On the other hand, in a vehicle front collision, when the vehicle 11 receives an impact oblique to the front-rear direction (for example, an impact from the inside in the vehicle width direction), the generator 6 moves rearward in the vehicle width direction outside. As a result, the terminal support member 42 may interfere with the mount member 30 .

In order to solve the above-described problem, the present embodiment is configured to appropriately receive the load applied from the mount member 30 to the terminal support member 42 when the generator 6 moves rearward of the vehicle. Adopt a receiving member. Specifically, in the present embodiment, the position of the terminal support member 42 close to the mount member 30 on the vehicle rear side and vehicle width direction outer side, more specifically, the position P1 shown in FIG. (corresponding to one corner) is provided with a receiving member. This position P1 is a position where a bolt 42d for fixing the terminal support member 42 to the case 6e of the generator 6 is applied. That is, in this embodiment, the receiving member is applied to the position P1 where the bolt 42d for fixing the terminal support member 42 to the case 6e of the generator 6 is provided.

Further, in this embodiment, the receiving member is configured by a positioning member (specifically, a positioning pin) for positioning the terminal support member 42 with respect to the case 6 e of the generator 6 . That is, in this embodiment, the receiving member is also used as a positioning member, in other words, the receiving member is provided with a positioning function. Since the receiving member is provided with a positioning function in this way, the position P2 on the opposite side of the position P1 in the diagonal direction of the terminal support member 42 (at the other one corner of the terminal support member 42 in plan view). corresponding) is also provided with a receiving member. That is, the receiving members are provided at two diagonal corners of the substantially rectangular terminal support member 42 . Position P2 is also a position where bolts 42d for fixing terminal support member 42 to case 6e of generator 6 are applied. On the other hand, at positions P3 and P4 corresponding to other corners of the substantially rectangular shape of the terminal support member 42 (bolts 42d for fixing the terminal support member 42 to the case 6e are also applied), receiving members are provided. does not apply.

Next, with reference to FIG. 9, the receiving member according to the embodiment of the present invention will be specifically described. FIG. 9 is a cross-sectional view along the vehicle vertical direction of the receiving member and the like according to the embodiment of the present invention. As shown in FIG. 9, in this embodiment, the receiving members 42h applied to positions P1 and P2 (see FIG. 8) of the terminal support member 42 have a relatively elongated hollow cylindrical shape and are made of, for example, iron. It is made of high-strength material. In one example, a tubular pin is applied to the receiving member 42h. Also, the receiving member 42h is tightly fitted into holes for the receiving member 42h provided in both the main body portion 42c and the case 6e. The body portion 42c of the terminal support member 42 is firmly fixed to the case 6e of the generator 6 by the receiving member 42h.

As a result, the receiving member 42h can appropriately receive the load applied from the mount member 30 to the terminal support member 42 when the generator 6 moves rearward of the vehicle in the event of a frontal collision of the vehicle. Therefore, it is possible to more reliably prevent damage to the terminal support member 42 due to interference between the terminal support member 42 and the mount member 30 in the event of a frontal collision of the vehicle. Further, the positioning of the terminal support member 42 with respect to the case 6e of the generator 6 can be properly performed using the receiving member 42h. With such a receiving member 42h, both the function of receiving the load applied to the terminal supporting member 42 and the function of positioning the terminal supporting member 42 can be achieved with a simple configuration.

Further, as shown in FIG. 9, the receiving member 42h has its inside (hollow portion) through which a bolt 42d for fixing the terminal support member 42 to the case 6e of the generator 6 is inserted. In other words, the receiving member 42h is arranged on the outer circumference of the bolt 42d, and the receiving member 42h and the bolt 42d are provided on the same axis. By arranging the receiving member 42 h and the bolt 42 d on the same axis in this way, both the receiving member 42 h and the bolt 42 d can be appropriately arranged at positions close to the mount member 30 .

Here, when only the bolt 42d is used without using the receiving member 42h, the load applied from the mount member 30 to the terminal support member 42 when the generator 6 moves rearward of the vehicle in the event of a frontal collision of the vehicle. concentrates on the threaded portion of the bolt 42d, that is, concentrates on the case 6e of the generator 6. This is because the entire bolt 42d acts like a "lever" because there is little air space around the threaded portion, but air space around the non-threaded portion. That is, when a force is applied to the bolt 42d in a direction substantially perpendicular to its longitudinal direction, the entire bolt 42d operates like a "lever" with the threaded portion serving as a fulcrum. Therefore, when only the bolt 42d is used, the load applied from the mounting member 30 to the terminal support member 42 cannot be properly received unlike the case where the receiving member 42h according to the present embodiment is used. On the other hand, when the receiving member 42h is used as in this embodiment, the receiving member 42h straddles both the main body portion 42c of the terminal support member 42 and the case 6e of the generator 6. Therefore, the load applied to the terminal support member 42 is distributed between the main body portion 42c and the case 6e, so that the load can be properly received.

Although the embodiments of the present invention have been described above, various modifications can be made to the above-described embodiments. That is, in the above-described embodiment, the engine 2 drives the generator 6 and the drive shaft 12 is not directly driven by the engine 2. The present invention can also be applied. The present invention can also be applied to a vehicle drive system in which the battery is charged exclusively by an external power source. Furthermore, in the above-described embodiment, a rotary piston engine is used as the engine 2, but various types of engines can be used as the engine. For example, a horizontally opposed engine can be employed as the engine 2 . This horizontally opposed engine has a low overall height like the rotary piston engine, and is suitable because the space factor in the motor room is not compromised even when a case such as a power conversion device is arranged above the engine.

Also, in the above-described embodiment, the receiving member 42h and the bolt 42d are provided on the same axis, but in other examples, the receiving member 42h and the bolt 42d may not be provided on the same axis. That is, the receiving member 42h and the bolt 42d may be provided separately. In addition, in the above-described embodiment, an example of using a hollow member (such as a tubular pin) as the receiving member 42h was shown, but in another example, a solid member (such as a dowel pin) is used as the receiving member 42h. good too. Furthermore, the present invention is not limited to application to the generator 6, but can also be applied to motors and motor generators.

REFERENCE SIGNS LIST 1 vehicle drive 2 engine 4 drive motor 6 generator (rotating electrical machine)
8b inverter 8c converter (power converter)
REFERENCE SIGNS LIST 10 transaxle 11 vehicle 11c front side member 12 drive shaft 20 lithium ion battery 30 mount member 31 mount member 40 harness 42 terminal support member 42a cover 42b terminal 42c main body 42d bolt (fixing member)
42h receiving member

Claims (6)

A rotary electric machine for a vehicle that is supported by a mount member on a front side member that extends in the longitudinal direction of the vehicle and that is arranged adjacent to and inward of the front side member in the vehicle width direction,
a terminal support member attached to the upper surface of the rotating electrical machine on the front side of the vehicle relative to the portion supported by the mounting member, the terminal supporting member supporting terminals connected to the rotating electrical machine;
a receiving member for receiving a load applied from the mounting member to the terminal supporting member when the rotary electric machine moves rearward of the vehicle;
has
The rotary electric machine for a vehicle, wherein the receiving member is provided at a position close to the mount member on the vehicle rear side and vehicle width direction outer side of the terminal support member. 2. The rotary electric machine for a vehicle according to claim 1, wherein said receiving member comprises a positioning member for positioning said terminal support member with respect to a case of said rotary electric machine. 3. The rotary electric machine for a vehicle according to claim 1, wherein said receiving member is provided on an outer circumference of a fixing member for fixing said terminal support member to a case of said rotary electric machine. The terminal support member has a substantially rectangular shape in plan view,
The receiving members are provided at two diagonal corners of the substantially rectangular shape, respectively.
A rotary electric machine for a vehicle according to claim 2. 5. The electric rotating machine according to any one of claims 1 to 4, wherein a power conversion device electrically connected to the electric rotating machine via the terminal supporting member is provided inside the rotating electric machine in the vehicle width direction. Rotating electrical machines in vehicles. The rotary electric machine for a vehicle according to any one of claims 1 to 5, wherein the rotating shaft of the rotary electric machine is arranged to extend along the vehicle width direction.

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