Motors and Drives

Abstract

To realize a motor that contributes to improvement in NV performance caused by rotation of the motor in a drive device.SOLUTION: A motor (6) according to one aspect of the present disclosure includes a rotor (62), a stator (61), and a housing. The housing includes: a case (63) fixed to a rigid body of a vehicle; a cover (64) fixed to the case (63) and fixed to the stator (61); a first fixing unit (101) fixed to the rigid body of the vehicle in the case (63); a second fixing unit (102) fixed to the case (63) in the cover (64); and a third fixing unit (103) fixed to the stator (61) in the cover (64). The stator (61) is disposed with a gap from an inner peripheral portion of the case (63). At least two of the first fixing unit (101), the second fixing unit (102), and the third fixing unit (103) are located in the vicinity.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a motor and a drive device, for example, a motor and a drive device mounted on a vehicle. [Background technology]

[0002] Motors mounted on vehicles such as hybrid vehicles are fixed to a rigid body of the vehicle, such as the engine. For example, the motor disclosed in Patent Document 1 has a configuration in which the stator is fixed to a motor housing that is located on the transmission side of the motor cover, and the motor housing is fixed to the engine via the motor cover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-137406 Summary of the Invention [Problem to be solved by the invention]

[0004] The applicant has found the following problem: The stator of the motor in Patent Document 1 is fixed to a motor housing that is located on the transmission side of the motor cover, so the path for transmitting vibrations caused by the rotation of the motor to the engine is long, resulting in poor NV (Noise Vibration) performance caused by the rotation of the motor in the drive unit.

[0005] The present disclosure has been made in consideration of such problems, and provides a motor and a drive device that contribute to improving the NV performance resulting from the rotation of the motor in the drive device. [Means for solving the problem]

[0006] A motor according to one aspect of the present disclosure is a motor mounted on a vehicle, A rotor, a stator disposed radially outside the rotor; a housing that accommodates the rotor and the stator; Equipped with The housing includes: a case fixed to a rigid body of the vehicle; a cover fixed to a portion of the case on the side of the rigid body of the vehicle so as to cover the case from the side of the rigid body of the vehicle, and fixed to the stator so as to be in contact with the portion of the stator on the side of the rigid body of the vehicle; a first fixing portion fixed to a rigid body of the vehicle in the case; a second fixing portion of the cover that is fixed to the case; a third fixing portion of the cover fixed to the stator; and the stator is disposed with a gap between it and an inner periphery of the case, At least two of the first fixed portion, the second fixed portion, and the third fixed portion are disposed adjacent to each other.

[0007] In the above-mentioned motor, it is preferable that, when viewed from the direction in which the rotation axis of the rotor extends, at least a portion of the second fixed portion is arranged to overlap an area connecting the first fixed portion and the third fixed portion.

[0008] In the above-described motor, when viewed from the direction in which the rotation axis of the rotor extends, it is preferable that, in a direction perpendicular to a first straight line connecting the centers of two of the first fixed portion, the second fixed portion, and the third fixed portion, the centers of the other fixed portions are arranged within a predetermined distance from the first straight line with respect to the two fixed portions.

[0009] In the above motor, the preset interval is preferably equal to or greater than 0 mm and equal to or less than 20 mm.

[0010] In the above motor, it is preferable that the other fixed portion is disposed on the first straight line when viewed from the direction in which the rotation axis of the rotor extends.

[0011] In the above-described motor, it is preferable that, when viewed from the direction in which the rotation axis of the rotor extends, the first fixed portion, the second fixed portion, and the third fixed portion are arranged on a second straight line extending radially from the rotation axis of the rotor.

[0012] A drive device according to one aspect of the present disclosure includes: the motor described above; an engine that is a rigid body of the vehicle; Equipped with. [Effects of the Invention]

[0013] According to the present disclosure, it is possible to realize a motor and a drive device that contribute to improving the NV performance resulting from the rotation of the motor in the drive device. [Brief explanation of the drawings]

[0014] [Figure 1] 2 is a YZ cross-sectional view showing the drive device of the first embodiment. FIG. [Figure 2] 4 is a diagram for explaining the arrangement of a fixing part in the drive device of the first embodiment. FIG. [Figure 3] 10 is a diagram for explaining the arrangement of a fixing part in a drive device according to a second embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Specific embodiments to which the present disclosure is applied will be described in detail below with reference to the drawings. However, the present disclosure is not limited to the following embodiments. In addition, the following description and drawings have been simplified as appropriate for clarity of explanation.

[0016] <First Embodiment> The drive device of this embodiment is suitable as a hybrid drive device to be mounted on a vehicle such as a hybrid car, etc. Here, in the following description, for clarity, a three-dimensional (XYZ) coordinate system will be used.

[0017] FIG. 1 is a YZ cross-sectional view showing the drive device of this embodiment. FIG. 2 is a diagram for explaining the arrangement of the fixed part in the drive device of this embodiment. Note that in FIG. 1, for clarity of the drawing, the illustration is simplified and some cross-sectional hatching is omitted. Also, in FIG. 2, the illustration is simplified so that the arrangement of the fixed part is clear.

[0018] 1, the drive unit 1 includes an engine 2, a transmission 3, a first drive shaft 4, a second drive shaft 5, a motor 6, a clutch 7, and a hydraulic control device 8. The engine 2 is, for example, an internal combustion engine such as a general reciprocating engine.

[0019] As shown in Fig. 1, transmission 3 is disposed on the positive side of the Y axis relative to engine 2. Transmission 3 includes, for example, a torque converter and a speed change mechanism. First drive shaft 4 extends in the Y axis direction. An end of first drive shaft 4 on the negative side of the Y axis is connected to engine 2 so as to be able to transmit driving force between the crankshaft of engine 2 and first drive shaft 4.

[0020] The second drive shaft 5 is disposed on the positive side of the Y axis relative to the first drive shaft 4, and extends in the Y axis direction. The positive end of the first drive shaft 4 and the negative end of the second drive shaft 5 are fitted together so that the first drive shaft 4 and the second drive shaft 5 can rotate relatively.

[0021] Additionally, the end of the second drive shaft 5 on the positive side of the Y axis is connected to the torque converter in the transmission 3 so as to be able to transmit driving force between the pump side of the torque converter and the second drive shaft 5. In this case, the rotation axis of the first drive shaft 4 and the rotation axis of the second drive shaft 5, for example, substantially overlap with each other.

[0022] 1, the motor 6 is disposed between the engine 2 and the transmission 3. The motor 6 is, for example, a three-phase AC motor, and is electrically connected to a battery via an inverter (not shown).

[0023] The motor 6 generates a driving torque using electric power supplied from the battery, and generates a regenerative braking torque when braking the vehicle, etc. The motor 6 also generates electric power when braking the vehicle, etc.

[0024] 1, the motor 6 includes a stator 61, a rotor 62, a case 63, a cover 64, and a support portion 65. The stator 61 includes a stator core 61a in which substantially annular electromagnetic steel plates are stacked in the Y-axis direction, and a coil 61b wound around the stator core 61a.

[0025] At this time, the stator core 61a is formed with through-holes 61c spaced apart in the circumferential direction of the stator core 61a as shown in Fig. 1. The through-holes 61c pass through the stator core 61a in the Y-axis direction.

[0026] The rotor 62 is disposed inside the stator 61 and is rotatable around the Y-axis. The rotor 62 includes a rotor body 62a and end plates 62b. The rotor body 62a includes a rotor core in which substantially annular electromagnetic steel plates are laminated in the Y-axis direction, and magnets inserted into through-holes formed at intervals around the circumferential direction of the rotor core.

[0027] The end plates 62b are generally annular when viewed in the Y-axis direction. The end plates 62b are arranged to sandwich the rotor body 62a in the Y-axis direction, with the Y-axis positive side end plate 62b fixed to the Y-axis positive side end of the rotor body 62a and the Y-axis negative side end plate 62b fixed to the Y-axis negative side end of the rotor body 62a.

[0028] 1, the case 63 includes a housing portion 63a, a fastening portion 63b, and a fixing portion 63c. The housing portion 63a has a bottomed tubular shape (for example, a cylindrical shape) that is open on the Y-axis negative side, and houses the stator 61 and the rotor 62 inside the housing portion 63a.

[0029] A through-hole 63d is formed in the bottom (i.e., the closed portion) on the +Y-axis side of the storage section 63a. The through-hole 63d penetrates through the approximate center of the bottom on the +Y-axis side of the storage section 63a in the Y-axis direction when viewed from the Y-axis direction, and the second drive shaft 5 is rotatably passed through the through-hole 63d.

[0030] The fastening portions 63b are formed at the end of the accommodation portion 63a on the negative Y-axis side, i.e., at a portion surrounding the opening of the accommodation portion 63a on the negative Y-axis side. The fastening portions 63b are arranged at intervals around the circumferential direction of the accommodation portion 63a when viewed from the Y-axis direction. The fastening portions 63b each include, for example, a female thread portion extending from the end of the accommodation portion 63a on the negative Y-axis side toward the positive Y-axis side.

[0031] The fixing portion 63c includes an annular portion 63e and a through portion 63f. The annular portion 63e protrudes radially outward from the end of the accommodation portion 63a on the negative Y-axis side. The through portion 63f is formed in the annular portion 63e and penetrates the annular portion 63e in the Y-axis direction. The through portion 63f is arranged along the periphery of the annular portion 63e when viewed from the Y-axis direction.

[0032] Case 63 is fixed to engine 2 by threading bolt 11, which is passed through such through-hole 63f from the Y-axis + side, into a female thread portion formed in engine 2. Therefore, through-hole 63f of case 63 functions as a fixing portion (first fixing portion) 101 that fixes case 63 to engine 2.

[0033] The cover 64 forms a housing together with the case 63 and includes a cover main body 64a and a fastening portion 64b. The cover main body 64a is generally plate-shaped and covers the storage portion 63a of the case 63 from the negative side of the Y axis. Therefore, the cover 64 is disposed on the negative side of the Y axis with respect to the storage portion 63a of the case 63.

[0034] A first through-hole 64c is formed in the cover main body 64a. The first through-hole 64c penetrates approximately the center of the cover main body 64a in the Y-axis direction when viewed in the Y-axis direction, and the first drive shaft 4 is rotatably passed through the first through-hole 64c. In addition, a second through-hole 64d is formed in the cover main body 64a. The second through-hole 64d penetrates the cover main body 64a in the Y-axis direction.

[0035] The second through-holes 64d are arranged, for example, along the periphery of the cover main body 64a when viewed from the Y-axis direction. In this case, the second through-holes 64d are arranged to correspond to the arrangement of the fastening portions 63b of the case 63 when viewed from the Y-axis direction.

[0036] The cover 64 is fixed to the case 63 by threading a bolt 12 passed through the second through-hole 64d from the negative side of the Y-axis into a fastening portion 63b of the case 63. Therefore, the second through-hole 64d of the cover 64 functions as a fixing portion (second fixing portion) 102 that fixes the cover 64 to the case 63. At this time, as will be described in detail later, it is preferable that the first fixing portion 101 and the second fixing portion 102 are disposed close to each other, as shown in FIG. 2.

[0037] 1, the fastening portion 64b includes a support portion 64e and a female screw portion 64f. The support portion 64e has, for example, a basic cylindrical shape that is open on the Y-axis + side, and protrudes from the cover main body 64a on the Y-axis + side.

[0038] The support pillar 64e is disposed along the periphery of the cover main body 64a when viewed from the Y-axis direction. In this case, the support pillar 64e is disposed so as to correspond to the arrangement of the through-holes 61c of the stator 61 when viewed from the Y-axis direction. The female thread portion 64f is formed on the inner peripheral surface of the support pillar 64e and extends from the end of the support pillar 64e on the +Y-axis side to the -Y-axis side.

[0039] The cover 64 is fixed to the stator 61 by threading the bolt 13 passed through the through-hole 61c of the stator 61 from the Y-axis + side into the female thread portion 64f. Therefore, the female thread portion 64f of the cover 64 functions as a fixing portion (third fixing portion) 103 that fixes the cover 64 to the stator 61.

[0040] In this case, it is preferable that second fixed portion 102 and third fixed portion 103 are disposed close to each other, as shown in Fig. 2. Note that a specific preferable positional relationship between first fixed portion 101, second fixed portion 102, and third fixed portion 103 will be described later.

[0041] The cover 64 is fixed to the stator 61 so that the end of the stator 61 on the negative side of the Y axis comes into contact with the cover 64. In addition, with the stator 61 fixed to the case 63 via the cover 64, the stator 61 is disposed with a gap between it and the inner periphery of the case 63. In other words, the stator 61 is not in contact with the case 63.

[0042] The support portion 65 rotatably connects the rotor 62 to the case 63 and the cover 64. As shown in Fig. 1, the support portion 65 includes a holding portion 65a, a first connecting portion 65b, and a second connecting portion 65c.

[0043] The holding portion 65a includes a cylindrical portion 65d and an annular portion 65e. The cylindrical portion 65d is disposed inside the rotor 62, and the rotor body 62a and the inner peripheral portion of the end plate 62b are fixed to the outer peripheral portion of the cylindrical portion 65d. The annular portion 65e protrudes radially outward from the end of the cylindrical portion 65d on the negative Y-axis side.

[0044] The first connecting portion 65b rotatably connects the rotor 62 to the case 63. The first connecting portion 65b includes an annular portion 65f, a first cylindrical portion 65g, and a second cylindrical portion 65h. The radially outer end of the annular portion 65f is fixed to the cylindrical portion 65d of the holding portion 65a.

[0045] In this case, a recessed portion 65i may be formed at the end of the annular portion 65f on the negative Y-axis side. The recessed portion 65i has, for example, a substantially ring shape when viewed from the Y-axis direction, and is recessed toward the positive Y-axis side.

[0046] The first cylindrical portion 65g is coupled to the second drive shaft 5 so as to be able to transmit driving force with the second drive shaft 5 passing through the first cylindrical portion 65g. The first cylindrical portion 65g is fixed to the radially inner end of the annular portion 65f.

[0047] Second cylindrical portion 65h protrudes from annular portion 65f toward the +Y axis side, and is connected to case 63 via bearing 14. As a result, the end of rotor 62 on the +Y axis side is rotatably connected to case 63 via first connecting portion 65b and bearing 14.

[0048] The second connecting portion 65c rotatably connects the rotor 62 to the cover 64. The second connecting portion 65c includes an annular portion 65j and a cylindrical portion 65k. A radially outer end of the annular portion 65j is fixed to the annular portion 65e of the holding portion 65a.

[0049] Cylindrical portion 65k protrudes from the radially inner end of annular portion 65j toward the negative Y-axis side, and is connected to cover 64 via bearing 15. As a result, the negative Y-axis side end of rotor 62 is rotatably connected to cover 64 via second connecting portion 65c and bearing 15.

[0050] With this configuration, the rotor 62 is rotatably connected to the case 63 and the cover 64, and the second drive shaft 5 rotates together with the rotor 62.

[0051] The clutch 7 switches between a connected state and a disconnected state between the first drive shaft 4 and the second drive shaft 5. The clutch 7 includes a clutch hub 71, a first clutch plate 72, a second clutch plate 73, a piston 74, a cancel plate 75, and a return spring 76, and is disposed inside the support part 65.

[0052] The clutch hub 71 includes a cylindrical portion 71a, a first annular portion 71b, and a second annular portion 71c. The cylindrical portion 71a is disposed inside the cylindrical portion 65d of the holding portion 65a of the support portion 65, and extends in the Y-axis direction. A gap is formed between the outer periphery of the cylindrical portion 71a and the inner periphery of the cylindrical portion 65d of the holding portion 65a of the support portion 65.

[0053] The radially outer end of the first annular portion 71b is connected to the Y-axis negative end of the cylindrical portion 71a. The radially inner end of the first annular portion 71b is connected to the first drive shaft 4 so as to be able to transmit driving force. The second annular portion 71c protrudes radially outward from the Y-axis negative end of the cylindrical portion 71a.

[0054] The first clutch plates 72 are generally annular when viewed in the Y-axis direction, and a radially inner end of the first clutch plates 72 is connected to the outer periphery of the cylindrical portion 71a of the clutch hub 71 so as to be movable in the Y-axis direction. The first clutch plates 72 are arranged at intervals in the Y-axis direction.

[0055] The second clutch plate 73 has a substantially annular shape when viewed from the Y-axis direction, and is connected to the inner periphery of the cylindrical portion 65d of the holding portion 65a of the support portion 65 so as to be movable in the Y-axis direction. The second clutch plate 73 is disposed between the first clutch plates 72.

[0056] The piston 74 includes an annular portion 74a, a pressing portion 74b, and a cylindrical portion 74c. A radially inner end of the annular portion 74a is connected to a first cylindrical portion 65g of a first connecting portion 65b of the support portion 65 so as to be movable in the Y-axis direction. A radially outer end of the annular portion 74a is disposed on the positive side of the Y-axis relative to the first clutch plate 72 and the second clutch plate 73.

[0057] In this case, the annular portion 74a may include a protrusion 74d. The protrusion 74d has, for example, a substantially annular shape when viewed from the Y-axis direction, and protrudes toward the positive side of the Y-axis. The protrusion 74d is fitted into a recess 65i of the annular portion 65f of the first connecting portion 65b of the support portion 65 via a seal member.

[0058] As a result, a piston hydraulic chamber 77 is formed between the protrusion 74d of the piston 74 and the recess 65i of the annular portion 65f of the first connecting portion 65b of the support portion 65. The piston hydraulic chamber 77 is connected to a first oil passage formed to communicate with the case 63, the second drive shaft 5, etc., and is filled with hydraulic oil.

[0059] The pressing portion 74b has, for example, a substantially cylindrical shape and protrudes from the radially outer end of the annular portion 74a toward the negative Y-axis side. The cylindrical portion 74c protrudes from the annular portion 74a toward the negative Y-axis side. The cylindrical portion 74c is disposed radially inward of the annular portion 74a relative to the first clutch plate 72 and the second clutch plate 73.

[0060] The cancel plate 75 has, for example, a ring shape when viewed from the Y-axis direction, and is disposed between the annular portion 71b of the clutch hub 71 and the piston 74. A radially inner end of the cancel plate 75 is fixed to the first cylindrical portion 65g of the first connecting portion 65b of the support portion 65. A radially outer end of the cancel plate 75 reaches the radially inner end of the cylindrical portion 74c of the piston 74 via a seal member.

[0061] As a result, a cancel hydraulic chamber 78 is formed by the annular portion 74a of the piston 74, the cylindrical portion 74c of the piston 74, the cancel plate 75, and the first cylindrical portion 65g of the first connecting portion 65b in the support portion 65. The cancel hydraulic chamber 78 is connected to a second oil passage formed to communicate with the case 63, the second drive shaft 5, etc., and is filled with hydraulic oil.

[0062] The return spring 76 extends in the Y-axis direction and is disposed between the annular portion 74a of the piston 74 and the cancel plate 75. As a result, the return spring 76 biases the piston 74 toward the positive side of the Y-axis.

[0063] The hydraulic control device 8 adjusts the hydraulic pressure of the hydraulic oil inside the piston hydraulic chamber 77 and the cancel hydraulic chamber 78. In detail, for example, when the vehicle is running, the hydraulic control device 8 maintains the hydraulic pressure of the hydraulic oil inside the piston hydraulic chamber 77 and the cancel hydraulic chamber 78 at or above a preset value.

[0064] At this time, the piston 74 moves toward the negative side of the Y axis, pressing the first clutch plate 72 and the second clutch plate 73 of the clutch 7 against the second annular portion 71c of the clutch hub 71, and bringing the first clutch plate 72 and the second clutch plate 73 into strong contact with each other. As a result, the first drive shaft 4 and the second drive shaft 5 are connected, and the driving forces of the engine 2 and the motor 6 are transmitted to the transmission 3.

[0065] On the other hand, for example, when braking the vehicle, the hydraulic control device 8 reduces the hydraulic pressure of the hydraulic oil inside the piston hydraulic chamber 77 and the cancel hydraulic chamber 78. At this time, the biasing force of the return spring 76 moves the piston 74 toward the + side of the Y axis, weakening the contact between the first clutch plate 72 and the second clutch plate 73 of the clutch 7. This releases the connection between the first drive shaft 4 and the second drive shaft 5, and the motor 6 generates electricity and regenerative braking torque due to the driving force transmitted from the transmission 3 via the second drive shaft 5.

[0066] Although not an essential part of the present disclosure and therefore not described here, the drive device 1 is preferably configured to be able to circulate hydraulic oil as a lubricating / cooling medium inside the motor 6.

[0067] Next, a specific preferred arrangement relationship between first fixed portion 101, second fixed portion 102, and third fixed portion 103 of this embodiment will be described. For example, as shown in Figure 2, at least one of the fixing portion groups formed by the first fixing portion 101, the second fixing portion 102, and the third fixing portion 103 may be arranged such that, when viewed toward the +Y-axis side, the area surrounded by the periphery E1 of the first fixing portion 101, a straight line L1 connecting the clockwise end of the first fixing portion 101 and the clockwise end of the third fixing portion 103, the periphery E2 of the third fixing portion 103, and a straight line L2 connecting the counterclockwise end of the first fixing portion 101 and the counterclockwise end of the third fixing portion 103, i.e., the area AR1 connecting the first fixing portion 101 and the third fixing portion 103, overlaps with at least a portion of the second fixing portion 102.

[0068] 2, at least one of the fixed portion groups formed by the first fixed portion 101, the second fixed portion 102, and the third fixed portion 103 may be arranged such that, when viewed from the Y-axis direction (i.e., the direction in which the rotation axis AX1 of the rotor 62 extends), the second fixed portion 102 is arranged approximately on a straight line (first straight line) L3 connecting the center C1 of the first fixed portion 101 and the center C3 of the third fixed portion 103. In other words, when viewed from the Y-axis direction, any part of the second fixed portion 102 may be arranged so as to approximately overlap the straight line L3.

[0069] 2, at least one of the fixed portion groups formed by the first fixed portion 101, the second fixed portion 102, and the third fixed portion 103 may be arranged in an arrangement relationship such that, when viewed from the Y-axis direction, the first fixed portion 101, the second fixed portion 102, and the third fixed portion 103 are arranged approximately on a straight line (second straight line) L4 extending from the rotation axis AX1 of the rotor 62 in the radial direction of the rotor 62. In other words, when viewed from the Y-axis direction, any portion of each of the first fixed portion 101, the second fixed portion 102, and the third fixed portion 103 may be arranged in an arrangement relationship such that it approximately overlaps with the straight line L4.

[0070] As a result, the drive device 1 and motor 6 of this embodiment are configured such that the first fixed portion 101 and the second fixed portion 102 are arranged in close proximity to each other, and the second fixed portion 102 and the third fixed portion 103 are arranged in close proximity to each other.

[0071] Therefore, compared to the motor of Patent Document 1, the drive device 1 and motor 6 of this embodiment have a shorter path for transmitting vibrations caused by the rotation of the motor 6 to the engine 2, which can contribute to improving the NV performance caused by the rotation of the motor 6 in the drive device 1. Additionally, compared to the motor of Patent Document 1, the drive device 1 and motor 6 of this embodiment can reduce housing radiation sound.

[0072] <Embodiment 2> 3 is a diagram for explaining the arrangement of the fixing parts in the driving device of this embodiment. The driving device of this embodiment has substantially the same configuration as driving device 1 of embodiment 1, so duplicated explanations will be omitted, but as shown in FIG. 3, the arrangement of first fixing part 101, second fixing part 102, and third fixing part 103 is different.

[0073] In this case, as shown in Figure 3, at least one of the fixed part groups formed by the first fixed part 101, the second fixed part 102, and the third fixed part 103 is preferably arranged in a direction perpendicular to the straight line L3 connecting the center C1 of the first fixed part 101 and the center C3 of the third fixed part 103, when viewed from the Y-axis direction, such that the center C2 of the second fixed part 102 is arranged within a predetermined distance G1 from the straight line L3.

[0074] Here, the gap G1 may be any gap that can shorten the path through which vibration caused by the rotation of the motor is transmitted to the engine, as compared to the motor of Patent Document 1, and may be, for example, between 0 mm and 20 mm.

[0075] In this case, when viewed from the Y-axis direction, the straight line L3 connecting the center C1 of the first fixed part 101 and the center C3 of the third fixed part 103 should overlap with the straight line L4 extending radially from the rotation axis AX1 of the rotor 62.

[0076] In other words, the center C1 of the first fixed part 101 and the center C3 of the third fixed part 103 are arranged on a straight line L4 extending radially from the rotation axis AX1 of the rotor 62, and the center C2 of the second fixed part 102 is arranged within a predetermined distance G1 from the straight line L4 in a direction perpendicular to the straight line L4.

[0077] As a result, the drive device and motor of this embodiment are also configured so that the first fixed portion 101 and the second fixed portion 102 are arranged in close proximity, and the second fixed portion 102 and the third fixed portion 103 are arranged in close proximity.

[0078] Therefore, the drive device and motor of this embodiment also have a shorter path for transmitting vibrations caused by motor rotation to the engine than the motor of Patent Document 1, which can contribute to improving the NV performance caused by motor rotation in the drive device. Additionally, the drive device and motor of this embodiment can reduce housing radiation noise compared to the motor of Patent Document 1.

[0079] The present disclosure is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present disclosure.

[0080] For example, the configurations of the motor 6, clutch 7, and the like of the drive device 1 of the first embodiment are representative examples, and are not limited to the above configurations.

[0081] For example, in embodiments 1 and 2, the first fixed portion 101 and the second fixed portion 102 are arranged nearby, and the second fixed portion 102 and the third fixed portion 103 are arranged nearby, but in the fixed portion group of the first fixed portion 101, the second fixed portion 102, and the third fixed portion 103, it is sufficient that at least two fixed portions are arranged nearby.

[0082] For example, the center C3 of the third fixed portion 103 may be located within a predetermined distance from a line connecting the center C1 of the first fixed portion 101 and the center C2 of the second fixed portion 102. Furthermore, the center C1 of the first fixed portion 101 may be located within a predetermined distance from a line connecting the center C2 of the second fixed portion 102 and the center C3 of the third fixed portion 103. [Explanation of symbols]

[0083] 1. Drive unit 2 engines 3-speed 4 First drive shaft 5 Second drive shaft 6 motors 61 stator, 61a stator core, 61b coil, 61c penetration portion 62 rotor, 62a rotor body, 62b end plate 63 case, 63a housing part, 63b fastened part, 63c fixed part, 63d penetrating part, 63e annular part, 63f penetrating part 64 Cover, 64a Cover body, 64b Fastening portion, 64c First through-hole, 64d Second through-hole, 64e Support portion, 64f Female thread portion 65 support portion, 65a holding portion, 65b first connecting portion, 65c second connecting portion, 65d cylindrical portion, 65e, 65f annular portion, 65g first cylindrical portion, 65h second cylindrical portion, 65i recessed portion, 65j annular portion, 65k cylindrical portion 7. Clutch 71 clutch hub, 71a cylindrical portion, 71b first annular portion, 71c second annular portion 72 First clutch plate 73 Second clutch plate 74 piston, 74a annular portion, 74b pressing portion, 74c cylindrical portion, 74d convex portion 75 Cancellation Plate 76 Return spring 77 Piston hydraulic chamber 78 Cancellation hydraulic chamber 8 Hydraulic control device 11, 12, 13 volts 14, 15 Bearings 101 first fixed part 102 Second fixing part 103 Third fixed part AR1: Area connecting the first and third fixed parts C1 Center of the first fixed part C2 Center of the second fixed part C3 Center of the third fixed part E1: Edge of the first fixing part E2 Third fixed part periphery G1 interval L1: A straight line connecting the clockwise end of the first fixing part and the clockwise end of the third fixing part L2: A straight line connecting the counterclockwise end of the first fixing part and the counterclockwise end of the third fixing part L3: A straight line connecting the center of the first fixed part and the center of the third fixed part L4: A straight line extending from the rotor axis in the radial direction of the rotor AX1 Rotor axis

Claims

1. A motor mounted on a vehicle, A rotor, a stator disposed radially outside the rotor; a housing that accommodates the rotor and the stator; Equipped with The housing includes: a case fixed to a rigid body of the vehicle; a cover fixed to a portion of the case on the side of the rigid body of the vehicle so as to cover the case from the side of the rigid body of the vehicle, and fixed to the stator so as to be in contact with the portion of the stator on the side of the rigid body of the vehicle; a first fixing portion of the case that is fixed to a rigid body of the vehicle; a second fixing portion of the cover that is fixed to the case; a third fixing portion of the cover fixed to the stator; and the stator is disposed with a gap between it and an inner periphery of the case, when viewed from a direction in which a rotation axis of the rotor extends, in a direction perpendicular to a first straight line connecting centers of two of the first fixed portion, the second fixed portion, and the third fixed portion, centers of the other fixed portions are arranged within a predetermined interval from the first straight line with respect to the two fixed portions, When viewed from a direction in which the rotation axis of the rotor extends, the other fixed portion is disposed on the first straight line.

2. 2. The motor according to claim 1, wherein, when viewed from the direction in which the rotation axis of the rotor extends, at least a portion of the second fixed portion is arranged to overlap an area connecting the first fixed portion and the third fixed portion.

3. 3. The motor according to claim 1, wherein the predetermined interval is equal to or greater than 0 mm and equal to or less than 20 mm.

4. 4. The motor according to claim 1, wherein, when viewed from a direction in which the rotation axis of the rotor extends, the first fixed portion, the second fixed portion, and the third fixed portion are arranged on a second straight line extending radially from the rotation axis of the rotor.

5. A motor mounted on a vehicle, A rotor, a stator disposed radially outside the rotor; a housing that accommodates the rotor and the stator; Equipped with The housing includes: a case fixed to a rigid body of the vehicle; a cover fixed to a portion of the case on the side of the rigid body of the vehicle so as to cover the case from the side of the rigid body of the vehicle, and fixed to the stator so as to be in contact with the portion of the stator on the side of the rigid body of the vehicle; a first fixing portion of the case that is fixed to a rigid body of the vehicle; a second fixing portion of the cover that is fixed to the case; a third fixing portion of the cover fixed to the stator; and the stator is disposed with a gap between it and an inner periphery of the case, when viewed from a direction in which a rotation axis of the rotor extends, at least a portion of the second fixed portion is arranged to overlap a region connecting the first fixed portion and the third fixed portion, When viewed from the direction in which the rotation axis of the rotor extends, the first fixed portion, the second fixed portion, and the third fixed portion are arranged on a second straight line extending radially from the rotation axis of the rotor.

6. A motor according to any one of claims 1 to 5; an engine that is a rigid body of the vehicle; A drive device comprising:

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