JP6937166B2 - Rotating electric machine unit - Google Patents

Description

The present invention relates to a rotary electric machine unit.

In a vehicle driven by a motor (rotary electric machine), a motor control device is often provided on the axial end face of the motor in order to shorten the wiring length. Since the housing of the motor is generally more rigid than the control device, the motor is fixed by fixing the bracket fixed to the frame of the vehicle to the housing of the motor. (For example, Patent Document 1)

Japanese Unexamined Patent Publication No. 2012-96761

In the technique of Patent Document 1, since the bracket is provided so as to straddle the upper part of the control device fixed to the end face of the motor, a space for arranging the bracket is required above the control device. As described above, if a space for arranging the bracket is required above, there is a problem that the degree of freedom in layout of the motor or the like in the vehicle is reduced.

The present invention has been invented to solve such a problem, and an object of the present invention is to provide a rotary electric system that enhances the degree of freedom of layout in a vehicle.

The rotary electric machine system of a certain aspect of the present invention is a rotary electric machine unit provided in a vehicle, and is arranged on the end face of the rotary electric machine and the housing of the rotary electric machine, and has a control device for controlling the rotary electric machine and an opening at one end. It has a bracket provided with an accommodating portion for accommodating a control device inside. The bracket is fixed so that the opening at one end is in contact with the end face of the housing of the rotary electric machine, and the other end is fixed to the frame of the vehicle.

According to this embodiment, the degree of freedom of layout in the vehicle can be increased.

FIG. 1 is a cross-sectional perspective view of the motor unit of the first embodiment. FIG. 2 is a cross-sectional view of the motor unit in AA of FIG. 1 in the axial direction. FIG. 3 is a sectional view in the radial direction of the motor unit in BB of FIG. FIG. 4 is a top view of the bracket. FIG. 5 is a cross-sectional view of the bracket in CC of FIG. FIG. 6 is a cross-sectional view of the motor unit of the modified example in the axial direction. FIG. 7 is a cross-sectional perspective view of the motor unit of the second embodiment. FIG. 8 is a cross-sectional view of the motor unit in AA of FIG. 7 in the axial direction. FIG. 9 is a cross-sectional view of the motor unit of the modified example in the axial direction. FIG. 10 is a cross-sectional view of the motor unit of the third embodiment in the axial direction.

The motor (rotary electric machine) system according to the embodiment of the present invention will be described.

(First Embodiment)
FIG. 1 is a cross-sectional perspective view of the motor unit 100 of the first embodiment. In this figure, the motor unit 100 is provided on the vehicle so that the front left side of the figure is the front side of the vehicle. The upper part of the figure corresponds to the upper part of the vehicle, and the directions of the left back and the right front of the figure correspond to the side of the vehicle.

The motor unit 100 includes a motor 1, a control device 2, a strong electric system connection portion 3, and a bracket 4.

The motor 1 has a motor housing 11 which is formed in a cylindrical shape and has a motor body inside. The motor housing 11 is provided with a fixing portion 12 for fixing the control device 2 on the end surface on the right side of the drawing. The fixing portion 12 is integrally formed with the motor housing 11.

The fixing portion 12 is a box-shaped member having an opening on the right side of the drawing, and is composed of a rectangular bottom surface 12A and four side surfaces 12B provided perpendicular to the bottom surface 12A. That is, the four side surfaces 12B extend toward the right side of the figure and form an opening that opens to the right side of the figure. The bottom surface 12A is integrally formed with the motor housing 11 on the surface on the left side of the drawing, and the control device 2 is fixed on the surface on the right side of the drawing.

A cable hole (not shown) is provided on the side surface 12B above the vehicle, and the motor 1 and the control device 2 are wired via the high electric system connection portion 3 arranged via the cable hole.

The control device 2 is, for example, an inverter, a charger, or the like, and is connected to the motor 1 by wiring provided via a high-voltage system connection unit 3. In order to shorten the wiring length of the high electric system connection portion 3, it is desirable that the control device 2 is arranged adjacent to the motor 1. Therefore, the control device 2 is fixed to the bottom surface 12A of the fixing portion 12 of the motor 1.

Here, in general, the motor housing 11 is provided with a speed reducer (not shown) or the like for obtaining the required torque on the left side portion of the drawing in which the rotation shaft of the motor 1 is provided. Therefore, the control device 2 is often arranged on the right side of the drawing of the motor housing 11 in which the rotation shaft of the motor 1 is not provided. Further, by fixing the control device 2 to the end surface of the motor housing 11, the wiring length between the motor 1 and the control device 2 can be shortened.

The control device 2 has a cooling unit 21. Here, the motor 1 is provided with a liquid cooling mechanism, and a refrigerant inflow path 13A and an outflow path 13B are provided in the motor housing 11. The bottom surface 12A of the fixing portion 12 is provided with two inflow holes and an outflow hole in the axial direction, and the cooling portion 21 is connected to the inflow passage 13A via the inflow hole and the outflow passage 13B via the outflow hole. Will be done. With this configuration, the refrigerant flows into the cooling unit 21, and the control device 2 can be cooled.

The bracket 4 has a box-shaped accommodating portion 41 having an opening at one end on the left side of the drawing and accommodating the control device 2, a flange 42 provided near the opening on the left side of the accommodating portion 41, and the accommodating portion 41. It is composed of a mount portion 43 provided adjacent to the right portion in the figure. For convenience of explanation, the accommodating portion 41, the flange 42, and the mount portion 43 will be described as different configurations, but these configurations are integrated to form the bracket 4.

The accommodating portion 41 is a box-shaped member having an opening on the left side of the drawing, and is composed of a bottom surface 41A and four side surfaces 41B. That is, by providing the side surface 41B on the bottom surface 41A so as to extend to the left side in the drawing, an opening is provided in the left side portion in the drawing in the direction toward the motor 1. In this way, a space is formed in the accommodating portion 41 by the bottom surface 41A and the four side surfaces 41B, and the control device 2 is arranged in this space.

The flange 42 is a member formed wider than the side surface 41B, and is provided at the left end portion of the side surface 41B in the drawing. The flange 42 has a through hole provided toward the side of the vehicle. The flange 42 is fixed to the side surface 12B of the fixing portion 12 by the bolt 44 provided so as to pass through the through hole. The side surface of the flange 42 is in contact with the side surface 12B of the fixing portion 12 and integrally forms a surface.

Since the control device 2 has many electronic components, it is not preferable to come into contact with water or dust. Therefore, it is preferable that the case is covered with a case made of a metal such as aluminum and arranged in an airtight place. In the present embodiment, the control device 2 is arranged in an airtight space composed of the fixing portion 12 and the accommodating portion 41. The control device 2 is fixed to the end surface on the right side of the drawing of the fixing portion 12, and is arranged so as not to come into contact with the flange 42 and the accommodating portion 41.

The mount portion 43 is a plate-shaped member extending from the end surface of the accommodating portion 41 on the right side of the drawing to the right side of the drawing. The mount portion 43 is provided with an insulator fastening hole 45 extending downward on the vehicle. Further, the mount portion 43 is provided with a groove 46 in a region rearward of the vehicle and on the left side of the drawing. The detailed configuration of the groove 46 will be described later with reference to FIGS. 4 and 5. Further, the mount portion 43 is supported by a support portion 47 provided on the end surface on the right side of the drawing of the bottom surface 41A of the accommodating portion 41. The mount portion 43 may extend from the lower portion of the vehicle to the right side of the drawing instead of the upper portion of the vehicle of the accommodating portion 41.

FIG. 2 is a cross-sectional view of the motor unit 100 in AA of FIG. In this figure, the upper part of the figure shows the upper part of the vehicle, and the left-right direction of the figure shows the side of the vehicle.

The side surface 12B of the fixing portion 12 of the motor 1 and the flange 42 of the bracket 4 are fastened by the bolt 44. As a result, a space is formed by the bottom surface 12A and the side surface 12B of the fixing portion 12, the inner surface of the flange 42, and the bottom surface 41A and the side surface 41B of the accommodating portion 41, and the control device 2 is arranged in this space.

Further, on the right side of the drawing, a mount portion 43 of the bracket 4 is arranged on the upper surface of the frame 5 of the vehicle via an insulator 6 provided for absorbing vibration. Then, the bracket 4 is fixed to the frame 5 by screwing the screw 7 inserted into the insulator fastening hole 45 with the screw hole provided in the frame 5. By fixing the bracket 4 to the frame 5 in this way, the motor unit 100 can be mounted on the vehicle.

In the present embodiment, the mount portion 43 is provided on the upper portion of the bottom surface 41A of the accommodating portion 41, but the present invention is not limited to this. The mount portion 43 may be provided below the bottom surface 41A.

FIG. 3 is a cross-sectional view taken along the line BB of the motor unit 100 of FIG. In this figure, the upper part of the figure shows the upper part of the vehicle, and the left side of the figure shows the front part of the vehicle.

Fixing portions 12 and flanges 42 provided in the order toward the front of the drawing are fixed to the motor housing 11 by using bolts 44. In the following, for convenience of explanation, with respect to the four side surfaces 41B of the accommodating portion 41, the side surface 41B above the vehicle is the plate portion 41B-1, the side surface 41B behind the vehicle is the plate portion 41B-2, and the side surface 41B below the vehicle, respectively. The side surface 41B in the front of the vehicle is referred to as a plate portion 41B-3, and the side surface 41B in front of the vehicle is referred to as a plate portion 41B-4.

Here, the width L1 of the plate portions 41B-2 and 41B-4 arranged in the front-rear direction of the vehicle and extending in the vertical direction is the plate portions 41B-1 and 41B arranged in the vertical direction of the vehicle and extending in the front-rear direction. It is configured to be wider than the width L2 of -3.

The plate portions 41B-1 and 41B-3 arranged in the vertical direction of the vehicle mainly support the load applied to the bracket 4 in the front-rear direction of the vehicle. The plate portions 41B-2 and 41B-4 arranged in the vehicle front-rear direction mainly support the load applied to the bracket 4 in the vehicle vertical direction. Therefore, by making the plate portions 41B-2 and 41B-4 wider than the plate portions 41B-1 and 41B-3, bending of the bracket 4 due to the load applied in the vertical direction can be suppressed.

In the present embodiment, in order to increase the rigidity of the plate portions 41B-2 and 41B-4, an example in which the plate portions 41B-1 and 41B-3 are thicker than the plate portions 41B-1 and 41B-3 has been described, but the present invention is not limited to this. By molding ribs only on the plate portions 41B-2 and 41B-4, or by molding the plate portions 41B-2 and 41B-4 using a hard material, the rigidity of the plate portions 41B-2 and 41B-4 May be increased.

Next, the groove 46 provided in the mount portion 43 will be described with reference to FIGS. 4 and 5.

FIG. 4 is a top view of the mount portion 43 from above the vehicle. The left-right direction of the figure indicates the side of the vehicle, and the lower part of the figure indicates the front of the vehicle.

When the mount portion 43 is viewed from the upper surface, the groove 46 is provided at the rear of the vehicle and in the region in the outer direction of the vehicle corresponding to the right side of the drawing from the motor 1 to the frame 5 with reference to the insulator fastening hole 45. Has been done.

For example, if an abnormal load is applied to the motor unit 100 at the time of a vehicle collision or the like, the bracket 4 may be damaged, but damage to the accommodating portion 41 accommodating the control device 2 is controlled. It is not preferable because the device 2 is exposed. In the present embodiment, by providing the groove 46 in the mount portion 43, it is possible to suppress damage to the accommodating portion 41 and prevent the control device 2 from being exposed. The reason for this will be described in detail below.

Since the motor 1 is relatively heavy, the center of gravity of the motor unit 100 is located inside the vehicle in the left side direction of the drawing with respect to the insulator fastening hole 45. Therefore, in the event of a collision, a load is applied to the inside of the vehicle in the insulator fastening hole 45. At the same time, since kinetic energy is generated in the vehicle toward the front of the vehicle, which is the traveling direction, a load is applied to the front side of the vehicle in the insulator fastening hole 45 at the time of a collision. That is, in the event of a collision, a load is also applied to the front of the vehicle in the insulator fastening hole 45.

That is, at the time of a collision, a load is applied to the insulator fastening hole 45 inside and in front of the vehicle. Since stress is generated in the insulator fastening hole 45 in the direction opposite to the applied load, the stress is generated toward the outside and the rear of the vehicle. The mount portion 43 is fragile in the outward direction and the rear side of the vehicle in which the groove 46 is formed, and a relatively large stress is generated in this fragile portion. Therefore, the mount portion 43 is likely to break in the vicinity of the groove 46. In this way, since the mount portion 43 is easily broken at the time of a collision, it is possible to reduce the possibility that the accommodating portion 41 is damaged and the control device 2 is exposed.

FIG. 5 is a cross-sectional view of the bracket in CC of FIG. The left-right direction in the figure indicates the side of the vehicle, and the upper part in the figure indicates the upper part of the vehicle.

The groove 46 is formed from the upper surface of the mount portion 43 toward the lower side of the vehicle in the vertical direction of the vehicle. The groove 46 does not penetrate to the lower surface of the mount portion 43.

Since the potential energy due to the weight of the vehicle is generated toward the lower side of the vehicle, a load is applied to the lower side of the vehicle in the insulator fastening hole 45 at the time of a collision. Therefore, the stress against the applied load is generated toward the upper side of the vehicle.

By providing the groove 46 on the upper side of the vehicle in the mount portion 43, a relatively large stress is generated on the upper side of the mount portion 43 fragile by the groove 46 at the time of a collision, so that the mount portion 43 breaks in the vicinity of the groove 46. It will be easier to do. In this way, the mount portion 43 provided with the groove 46 is more likely to break than the accommodating portion 41, so that the breakage of the accommodating portion 41 covering the control device 2 can be suppressed. Therefore, it is possible to reduce the possibility that the accommodating portion 41 is damaged and the control device 2 is exposed.

In the present embodiment, an example is shown in which the groove 46 is provided in the mount portion 43 in the region rearward of the vehicle and on the left side of the drawing with respect to the insulator fastening hole 45 and above the vehicle, but the present invention is not limited to this. If the groove 46 is provided in the vicinity of the insulator fastening hole 45 in the mount portion 43, the breakage of the accommodating portion 41 is suppressed, so that the exposure of the control device 2 can be suppressed. Therefore, the groove 46 may be provided in front of the vehicle, on the right side of the figure, below the vehicle, or the like with respect to the insulator fastening hole 45.

FIG. 6 is a cross-sectional view of the motor unit 100 of the modified example of the first embodiment.

According to this modification, the motor 1 does not have a fixing portion 12, the control device 2 is directly fixed to the end face of the motor housing 11, and the flange 42 of the bracket 4 is fixed to the motor housing 11. Even with this configuration, the control device 2 can be arranged in the space formed by the end surface of the motor housing 11 and the inner surface of the flange 42 and the accommodating portion 41.

According to the first embodiment, the following effects can be obtained.

The motor unit 100 of the first embodiment includes a motor 1, a control device 2 of the motor 1 arranged on an end surface of a motor housing 11, and a bracket 4 having an accommodating portion 41 having an opening at one end. The bracket 4 is fixed so that the opening at one end is in contact with the end surface of the motor housing 11, and the other end is fixed to the frame 5 of the vehicle.

If the case of the control device 2 is attached to the motor housing 11 and the motor housing 11 and the bracket 4 are fastened with bolts, the bracket 4 will be located above the control device 2, so that the motor unit The 100 requires a space for the bracket 4 above the control device 2. In the present embodiment, the bracket 4 is not provided so as to straddle the control device 2, and the bracket 4 is fixed to the end surface of the motor housing 11, so that the space above the motor unit 100 is widened and the vehicle design is free. The degree can be improved.

Further, since the bracket 4 is formed in a plate shape, there is a high possibility that natural vibration will occur. If the motor housing 11 and the frame 5 are fixed by the bracket 4 so as to straddle the control device 2, the plate-shaped portion of the bracket 4 becomes longer in the side surface direction (axial direction) of the vehicle, and natural vibration is likely to occur. .. On the other hand, in the present embodiment, natural vibration is generated only in the plate-shaped mount portion 43, that is, only between the accommodating portion 41 and the frame 5 is formed in a plate shape, so that it is unique. The generation of vibration can be suppressed. In this way, since the location where the natural vibration is generated can be shortened, vehicle noise can be reduced. Further, by making the mount portion 43 shorter toward the vehicle side, the rigidity of the mount portion 43 can be improved.

Further, in general, the case covering the control device 2 is molded with a thin wall. If the case of the control device 2 is attached to the motor housing 11 and the case of the control device 2 and the bracket 4 are fastened with bolts, the torque reaction force generated during traveling and the load caused by the unevenness of the road surface will be applied. Since it is added, stress is generated at the bolt fastening portion, and there is a risk of damage due to metal fatigue. However, in the present embodiment, since the bracket 4 and the case of the control device 2 are integrally molded, the stress is dispersed and damage due to metal fatigue due to stress concentration can be suppressed.

In the motor unit 100 of the first embodiment, the housing portion 41 of the bracket 4 has a rectangular cross section, and the width L1 of the plate portions 41B-2 and 41B-4 arranged in the front-rear direction of the vehicle and extending in the vertical direction is , It is configured to be wider than the width L2 of the plate portions 41B-1 and 41B-3 arranged in the vertical direction of the vehicle and extending in the front-rear direction.

In the running state of the vehicle, a load in the vertical direction is frequently generated on the vehicle, such as unevenness of the road surface on rough terrain, riding on a manhole or a joint of a highway even on a terrained road surface, or a curb on the side of the road. Therefore, the bracket 4 needs to be configured so as not to bend in the vertical direction rather than in the front-rear direction of the vehicle. In order to reduce the weight of the vehicle, it is preferable that the bracket 4 does not generate more rigidity than necessary.

The plate portions 41B-1 and 41B-3 arranged in the vertical direction of the vehicle mainly support the load acting in the front-rear direction of the vehicle, which is the thickness direction thereof. The plate portions 41B-2 and 41B-4 arranged in the front-rear direction of the vehicle mainly support the load acting in the vertical direction of the vehicle. Therefore, by making the plate portions 41B-2 and 41B-4 wider than the plate portions 41B-1 and 41B-3, bending of the bracket 4 due to the load in the vertical direction can be suppressed, so that the traveling can be performed. It is possible to reduce the load on the control device 2 which is sometimes mainly applied in the vertical direction.

According to the motor unit 100 of the first embodiment, the bracket 4 has a groove 46 which is used for fixing the mounting portion 43 to the frame 5 of the vehicle and is provided in the vicinity of the insulator fastening hole 45.

For example, when a vehicle collides with another vehicle while traveling, the bracket 4 may be damaged if an abnormal load is applied due to the collision or the like. However, if the accommodating portion 41 accommodating the control device 2 is damaged, the control device 2 will be exposed, which is not preferable. However, in the present embodiment, the groove 46 is provided in the vicinity of the insulator fastening hole 45 of the mount portion 43, which is vulnerable. Therefore, when an abnormal load is applied to the bracket 4, the vicinity of the fragile insulator fastening hole 45 of the mount portion 43 is damaged, so that the accommodating portion 41 is damaged and the control device 2 is suppressed from being exposed.

According to the first embodiment, the groove 46 is provided behind the vehicle and outside the vehicle toward the frame 5 with respect to the insulator fastening hole 45 when the mount portion 43 is viewed from above.

Since the motor 1 is relatively heavy, the center of gravity of the motor unit 100 is located inside the vehicle with the insulator fastening hole 45 of the mount portion 43. Therefore, in the event of a collision, a load is applied to the inside of the vehicle in the insulator fastening hole 45. Further, since kinetic energy is generated in the vehicle toward the front of the vehicle, which is the traveling direction, a load is applied to the front of the vehicle in the insulator fastening hole 45 at the time of a collision. Therefore, at the time of a collision, a load is applied to the inside and the front of the vehicle in the insulator fastening hole 45.

In the insulator fastening hole 45, stress is generated in the direction opposite to the load, so that the stress is generated toward the outside and the rear of the vehicle. Since the mount portion 43 is fragile on the outside and the rear of the vehicle provided with the groove 46, the fragile mount portion 43 generates a relatively large stress in the vicinity of the groove 46 and is easily broken. Therefore, when an abnormal load is applied to the bracket 4, the vicinity of the fragile insulator fastening hole 45 of the mount portion 43 is damaged, so that the accommodating portion 41 is damaged and the control device 2 is suppressed from being exposed.

When a vehicle collides with another vehicle from behind, a load is applied toward the rear of the vehicle. Further, since the center of gravity of the motor unit 100 is located inside the vehicle, a load is applied to the inside of the vehicle in the event of a collision. Therefore, in the event of a collision, the load is applied to the inside and the rear of the vehicle, so that the stress is generated to the outside and the front of the vehicle. Since the mount portion 43 is not provided with a groove 46 inside and in front of the vehicle, the bracket 4 is not easily damaged and the vehicle can run on its own even after a collision.

According to the first embodiment, the groove 46 is provided above the vehicle in the mount portion 43.

Here, the potential energy due to the weight of the vehicle is generated toward the lower side of the vehicle. Therefore, a load is applied to the lower side of the vehicle at the insulator fastening hole 45, and the stress due to this load is generated toward the upper side of the vehicle. By providing the groove 46 on the upper side of the vehicle in the mount portion 43, a relatively large stress is generated on the upper side of the mount portion 43 which has become fragile due to the provision of the groove 46 in the event of a collision, and the fracture is likely to occur. Therefore, it is possible to reduce the possibility that the accommodating portion 41 is damaged and the control device 2 is exposed.

(Second Embodiment)
In the first embodiment, an example in which the accommodating portion 41 of the bracket 4 is fixed to the fixing portion 12 which is a part of the motor 1 has been described. In the second embodiment, an example in which the accommodating portion 41 of the bracket 4 is fixed to a fixing member provided separately from the motor 1 will be described.

FIG. 7 is a cross-sectional perspective view of the motor unit 100 of the second embodiment.

When the motor unit 100 of the second embodiment is compared with the motor unit 100 of the first embodiment shown in FIG. 1, the accommodating portion 41 of the bracket 4 is different from the fixed portion 12 of the motor 1 and is different from the motor 1. The difference is that it is fixed to the fixing member 8.

Like the fixing portion 12 of the first embodiment, the fixing member 8 is a box-shaped member having an opening on one surface, and is composed of a bottom surface 8A and four side surfaces 8B. On the bottom surface 8A, one surface on the left side of the drawing is fixed to the motor housing 11, and the control device 2 is fixed to the other surface on the right side of the drawing. The four side surfaces 8B extend in the axial direction, that is, toward the left side of the vehicle. It is desirable that the fixing member 8 is made of metal or resin and has relatively high rigidity.

FIG. 8 is a cross-sectional view taken along the line AA of the motor unit 100 of FIG.

As shown in this figure, the flange 42 of the bracket 4 is fixed to the fixing member 8 by using bolts 44. As a result, the bottom surface 8A and the side surface 8B of the fixing member 8, the flange 42, and the bottom surface 41A and the side surface 41B of the accommodating portion 41 provide a space in which the control device 2 is arranged.

FIG. 9 is a cross-sectional view of the motor unit 100 of the modified example of the second embodiment.

According to this modification, the fixing member 8 is composed of only the bottom surface 8A, does not have the side surface 8B, and is not formed in a box shape. In such a case, the control device 2 is fixed to the plate-shaped fixing member 8, and the flange 42 of the bracket 4 is fixed to the fixing member 8. Even with such a configuration, a space can be formed by the motor housing 11, the accommodating portion 41, and the flange 42, so that the control device 2 can be arranged in this space.

According to the second embodiment, the following effects can be obtained.

According to the motor unit 100 of the second embodiment, the fixing member 8 is further provided, and the fixing member 8 is fixed to the end surface of the motor housing 11 on one surface on the left side of the drawing of the vehicle, and the other surface on the right side of the drawing. The control device 2 and the bracket 4 are fixed in the above.

Here, since the control device 2 is an electronic component and is provided with a cooling unit 21 connected to the inflow path 13A and the outflow path 13B, it is preferable to suppress the application of vibration and load. By providing the fixing member 8 between the motor 1 and the bracket 4 as in the present embodiment, the fixing surface between the motor 1 and the fixing member 8 and the fixing surface between the fixing member 8 and the bracket 4 are respectively. Since the torque reaction force generated during traveling and the load caused by the road surface unevenness are attenuated, the vibration and load applied to the control device 2 can be suppressed.

According to the motor unit 100 of the second embodiment, after the fixing member 8 fixing the control device 2 and the bracket 4 are integrated, the integrated fixing member 8 and the bracket 4 are integrated by using the bolt 44. It is fixed to the motor housing 11.

Here, by fixing the fixing member 8 and the bracket 4 to the motor housing 11 having a relatively high rigidity, the deformation of the bracket 4 can be minimized and the load applied to the control device 2 can be reduced. Further, by tightening the bracket 4, the fixing member 8, and the motor housing 11 together with only the bolt 44, the number of bolts 44 does not increase even if the fixing member 8 is used, so that the increase in manufacturing cost is suppressed. be able to.

According to the motor unit 100 of the second embodiment, the motor unit 100 further includes a high electric system connecting portion 3 which is connected to the fixing member 8 and is a connector for wiring the motor 1 and the control device 2.

Here, the connection of the high electric system is performed by connecting the fixed terminal in the control device 2 and the bus bar of the motor 1. However, since the connection between the two is strengthened, if a large load is applied in the vertical direction of the vehicle, the connection portion may be deformed and damaged. Since the fixing member 8 is coupled to the motor housing 11 having high rigidity, it is difficult to be deformed. Damage can be suppressed.

(Third Embodiment)
In the second embodiment, an example in which the bolt 44 is penetrated from the flange 42 side when the bracket 4 is fixed to the motor housing 11 via the fixing member 8 has been described. In the present embodiment, an example of fixing with bolts from the fixing member 8 toward the flange 42 side will be further described.

FIG. 10 is a cross-sectional view of the motor unit 100 of the third embodiment.

According to this figure, as compared with the motor unit 100 of the modified example of the second embodiment shown in FIG. 9, a bolt 48 penetrating from the fixing member 8 to the flange 42 of the bracket 4 is further provided. In the case of such a configuration, the motor unit 100 is manufactured as follows.

First, the control device 2 is fixed to the fixing member 8. Then, the bracket 4 is fixed to the fixing member 8 so that the control device 2 is accommodated in the accommodating portion 41, and the bolt 48 is passed through from the side of the fixing member 8 toward the flange 42 to form the bolt 48 and the flange 42. To screw. By doing so, the fixing member 8 and the bracket 4 are integrated to form a control unit in which the control device 2 is housed.

Then, this control unit is arranged on the end surface of the motor housing 11, and the bolt 44 is passed from the flange 42 side toward the motor housing 11 via the fixing member 8, and the bolt 44 and the motor housing 11 are passed through. Screw it in. By doing so, the motor unit 100 is configured.

According to the third embodiment, the following effects can be obtained.

According to the motor unit 100 of the third embodiment, the unit in which the bracket 4 and the fixing member 8 are integrated is fixed to the motor housing 11.

With this configuration, for example, if the control device 2 breaks down and needs to be replaced, the control unit in which the control device 2, the bracket 4, and the fixing member 8 are integrated can be replaced. It is good and easy to maintain. The control device 2 must not be exposed to water, dust, or the like not only when the vehicle is running but also when it is manufactured. In addition, by assembling the control unit in advance at a factory equipped with a clean room, etc., after that, in an environment such as a vehicle assembly factory or a repair shop where foreign matter such as minute dust is likely to be mixed, the control unit To the motor housing 11 only needs to be fixed. Therefore, since the control device 2 can be easily fixed in a place having high dust resistance, contact with foreign matter can be suppressed, and a failure of the control device 2 or the like can be suppressed.

In each embodiment, the motor 1 has been described with reference to an example of being an electric motor, but the present invention is not limited to this. For example, instead of the motor 1, it may be configured as a generator that generates electricity by being driven by an external force.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. No. In addition, the above embodiments can be combined as appropriate.

1 Motor 2 Control device 3 Strong electric system connection part 4 Bracket 7 Screw 8 Fixing member 41 Accommodation part 42 Flange 43 Mount part 44 Bolt 46 Groove 100 Motor unit

Claims (9)

It is a rotary electric machine unit installed in a vehicle.
With a rotary electric machine
A control device arranged on the end face of the housing of the rotary electric machine and controlling the rotary electric machine,
It has a bracket having an opening at one end and an accommodating portion for accommodating the control device inside.
The bracket is a rotary electric machine unit in which the opening at one end is fixed so as to come into contact with the end surface of the housing of the rotary electric machine, and the other end is fixed to the frame of the vehicle. It is a rotary electric machine unit installed in a vehicle.
With a rotary electric machine
A control device arranged on the end face of the housing of the rotary electric machine and controlling the rotary electric machine,
A bracket having an opening at one end and an accommodating portion for accommodating the control device inside.
It has a fixing member fixed to the end face of the housing of the rotary electric machine, and has.
In the bracket, the opening at one end is fixed to the end face of the housing of the rotary electric machine, and the other end is fixed to the frame of the vehicle .
A rotary electric machine unit in which the control device and the bracket are fixed to the surface of the fixing member on the side opposite to the side to be fixed to the rotary electric machine. The rotary electric machine unit according to claim 2.
The accommodating portion of the bracket has a rectangular bottom surface and four side surfaces provided perpendicular to the bottom surface, and the side surface provided in the vertical direction of the vehicle is larger than the side surface provided in the front-rear direction of the vehicle. A rotating electric unit that is thickly constructed. The rotary electric machine unit according to claim 2 or 3.
The bracket has a plate-shaped mount portion extending from the end portion of the housing portion toward the side of the vehicle.
The mount portion is a rotary electric machine unit having a fastening hole for fixing to the frame of the vehicle and a groove provided in the vicinity of the fastening hole at a lateral end of the vehicle. The rotary electric machine unit according to claim 4.
The groove is a rotary electric machine unit provided behind the vehicle and on the side facing the frame with respect to the fastening hole. The rotary electric machine unit according to claim 4 or 5.
The groove is a rotary electric machine unit provided on the upper surface side of the mount portion. The rotary electric machine unit according to claim 2.
The bracket is a rotary electric machine unit that is fixed to the housing with bolts via the fixing member. The rotary electric machine unit according to claim 2 or 7.
The fixing member is a rotary electric machine unit having a connecting portion for providing wiring between the rotary electric machine and the control device. The rotary electric machine unit according to claim 7 or 8.
A rotary electric machine unit in which a control unit accommodating the control device and in which the bracket and the fixing member are integrated is fixed to the housing.

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