Motor-integrated suspension and automobile

Abstract

The present specification provides a unit in which a motor and a suspension are integrated, that is, a motor-integrated suspension. The motor-integrated suspension disclosed in the present specification includes a motor that drives an axle and a suspension beam that is attached to a vehicle body. The suspension beam functions as at least a part of a housing for a stator and a rotor of the motor. In the motor-integrated suspension disclosed in the present specification, since the suspension beam and the housing of the motor are integrated, the motor-integrated suspension can be configured with a smaller number of components than a conventional structure in which the suspension beam and the motor are assembled separately.

Description

[0001] (Mutual reference to related applications)

[0002] This application is a related application to Japanese Patent Application No. 2024-024301, filed on February 21, 2024, and claims priority based on that Japanese patent application, incorporating all the contents described in that Japanese patent application as the content of this specification. Technical Field

[0003] The technology disclosed in this specification relates to automobile suspension, specifically to suspensions with an electric motor assembled with a drive axle, i.e., motor-integrated suspensions, and automobiles equipped with such motor-integrated suspensions. Background Technology

[0004] A structure in which an electric motor driving an axle is fixed to a suspension beam has been proposed (e.g., Japanese Patent Application Publication No. 2017-100676). Furthermore, in this specification, "electric motor" is sometimes simply referred to as "motor". Summary of the Invention

[0005] Conventional methods involved mounting a pre-assembled motor onto a pre-assembled suspension beam. This specification provides an improved version of the existing structure, integrating the motor and suspension into a single unit: a motor-integrated suspension. Furthermore, this specification also provides a vehicle equipped with the aforementioned motor-integrated suspension.

[0006] One embodiment of the integrated motor suspension disclosed in this specification includes a motor and a suspension beam. The motor drives the axle. The suspension beam is mounted on the vehicle body. The suspension beam also serves as at least part of the housing housing accommodating the stator and rotor of the motor. In the integrated motor suspension disclosed in this specification, since the suspension beam and the motor housing are integrated, it can be constructed with fewer parts compared to existing structures that assemble the suspension beam and motor separately.

[0007] In another embodiment of the integrated motor suspension disclosed in this specification, the suspension beam is divided into a right sub-beam and a left sub-beam, which are respectively mounted on the vehicle body. The motor is positioned between the right and left sub-beams. According to this structure, the motor acts as a crossbeam of the suspension, thus eliminating the need for a conventional suspension crossbeam and enabling miniaturization of both the suspension and motor units.

[0008] The vehicle equipped with the aforementioned integrated motor suspension is also one of the technologies disclosed in this specification.

[0009] For the sake of simplicity, the term "integrated motor suspension" will sometimes be simply referred to as "suspension". Detailed descriptions of the technology disclosed in this specification and further improvements are provided in the following "Specific Embodiments". Attached Figure Description

[0010] Figure 1This is a top view of the suspension 100 of the first embodiment.

[0011] Figure 2 This is a rear view of the suspension 100 of the first embodiment.

[0012] Figure 3 It is along Figure 1 A cross-sectional view of the suspension 100 cut along line III-III.

[0013] Figure 4 This diagram shows the separation of the right sub-beam 120R and the left sub-beam 120L from the motor 110.

[0014] Figure 5 This is a top view of the suspension 200 of the second embodiment.

[0015] Figure 6 It is along Figure 5 A cross-sectional view of the suspension 200 cut along the VI-VI line.

[0016] Figure 7 This is a top view of the suspension 300 of the third embodiment.

[0017] Figure 8 It is along Figure 7 A cross-sectional view of the suspension 300 cut along line VIII-VIII.

[0018] Figure 9 This is a top view of the suspension 400 of the fourth embodiment.

[0019] Figure 10 This is the rear view of the suspension 400.

[0020] Figure 11 It is along Figure 9 A cross-sectional view of the suspension 400 cut along the XI-XI line.

[0021] Figure 12 This is a top view of the suspension 100 (some figures are omitted).

[0022] Figure 13 This is a side view of the modified suspension 500.

[0023] Figure 14 This is a rear view of another variation of the suspension 600. Detailed Implementation

[0024] (First Embodiment) Refer to Figures 1 to 4 The suspension 100 of the first embodiment will be described. As mentioned above, "suspension 100" is an abbreviation for "motor integrated suspension 100".

[0025] Figure 1 This is a top view of suspension 100. Figure 2 This shows a rear view of suspension 100. Suspension 100 is mounted on the rear longitudinal beams 11R and 11L of the electric vehicle. The rear longitudinal beams 11R and 11L are part of the vehicle body. Figure 1 In the middle, the rear longitudinal beams 11R and 11L are depicted by imaginary lines.

[0026] As is well known, a car's suspension is the unit that supports the wheels. In this embodiment, the suspension 100 supports the rear wheels 13 of an electric vehicle. The suspension 100 includes a suspension beam 120, a motor 110, a shock absorber 12, an upper arm 131, a lower arm 132, and a steering knuckle 133. Figure 1 Only the lower end of the shock absorber 12 is shown in the image.

[0027] The suspension 100 of this embodiment not only supports the rear wheel 13, but also includes a motor 110 that drives the rear wheel 13 (axle 140). The suspension 100 has a built-in motor 110 that drives the rear wheel 13 (axle 140). The suspension 100 is able to drive the axle 140 while supporting it.

[0028] The suspension beam 120 is divided into a right sub-beam 120R and a left sub-beam 120L. The right sub-beam 120R and left sub-beam 120L are arranged laterally on the vehicle body. The right sub-beam 120R is fixed to the right rear longitudinal beam 11R, and the left sub-beam 120L is fixed to the left rear longitudinal beam 11L. A motor 110 is positioned between the right sub-beam 120R and the left sub-beam 120L.

[0029] Figure 3 Indicates along Figure 1 A cross-section of the suspension 100 for line III-III. As described above, the motor 110 is positioned between the right sub-beam 120R and the left sub-beam 120L of the suspension beam 120. The right sub-beam 120R and the left sub-beam 120L are bolted to the motor housing 115 of the motor 110. However, in the figure, the bolts fixing the right sub-beam 120R and the left sub-beam 120L are omitted from the drawing.

[0030] Figure 4 This indicates the state where the right sub-beam 120R and the left sub-beam 120L are separated from the motor 110. As is well known, the motor 110 includes a stator 112 and a rotor 113. The rotor 113 is fixed to the main shaft 111. The motor housing 115 houses the stator 112 and the rotor 113. (The text abruptly ends here.) Figure 4As shown, the motor housing 115 is cylindrical, with openings 115R and 115L at each end. The right sub-beam 120R covers the right-side opening 115R of the motor housing 115, and the left sub-beam 120L covers the left-side opening 115L of the motor housing 115. By installing the sub-beams 120R and 120L on the motor housing 115, the internal space 116 housing the stator 112 and rotor 113 is closed. That is, the sub-beams 120R and 120L also serve as part of the housing housing housing the stator 112 and rotor 113 of the motor 110. In other words, the sub-beams 120R and 120L define a portion of the internal space 116 housing the stator 112 and rotor 113. In other words, the sub-beams 120R and 120L face the stator 112. Lubricating oil (not shown) is stored in the internal space 116, and the sub-beams 120R and 120L are exposed to the motor lubricating oil.

[0031] The main shaft 111 of the motor 110 is rotatably supported by a bearing 117, which is fixed to the motor housing 115. Through holes 125 for the main shaft 111 to pass through are provided in the sub-beams 120R and 120L. The gap between the inner surface of the through hole 125 and the main shaft 111 is sealed by a seal 124. Furthermore, the main shaft 111 and the axle 140 are connected by a universal joint 141. Figure 3 The diagram of the universal joint 141 is omitted in the text.

[0032] Other structures related to the suspension beam 120 will be described. Since the suspension beam 120 has a bilaterally symmetrical shape, the structure on the right side of the suspension beam 120 will be described in detail.

[0033] like Figure 1 As shown, the right sub-beam 120R has a forearm 121 extending in a right-forward direction at its front end and a rear arm 122 extending in a right-rear direction at its rear end. The right sub-beam 120R is U-shaped. The ends of the forearm 121 and the rear arm 122 are respectively mounted to the right rear longitudinal beam 11R via a base 123. The base 123 is provided to reduce the vibration of the suspension 100. The left sub-beam 120L also has the same structure as the right sub-beam 120R.

[0034] The main shaft 111 of the motor 110 is connected to the axle 140 of the rear wheel 13 via a universal joint 141. A universal joint 141 is also located in the middle section of the axle 140. Figure 1The diagram omits one universal joint 141. The axle 140 is rotatably supported by a steering knuckle 133, which is supported by an upper arm 131 and a lower arm 132. The upper arm 131 is mounted on the upper part of the right sub-beam 120R, and the lower arm 132 is mounted on the lower part of the right sub-beam 120R. The upper arm 131 and lower arm 132 are mounted on the right sub-beam 120R in a swingable manner. Therefore, the steering knuckle 133 can swing up and down while being supported by the upper arm 131 and lower arm 132. A shock absorber 12 is mounted on the upper part of the steering knuckle 133. The lower end of the shock absorber 12 can also be connected to either the upper arm 131 or the lower arm 132.

[0035] The advantages of suspension 100 are described below. As mentioned above, suspension beam 120 also serves as at least a part of the housing housing the stator 112 and rotor 113 of motor 110. In other words, suspension beam 120 is integrated with the housing housing of motor 110. In suspension 100, since suspension beam 120 is integrated with the housing housing of motor 110, it has the advantage that it can be constructed with fewer parts compared to existing structures where suspension beam 120 and motor 110 are separate.

[0036] The motor housing 115, which houses the stator 112 and rotor 113 of the motor 110, has a cylindrical shape with openings on the left and right sides. The right opening 115R of the motor housing 115 is blocked by the right sub-beam 120R, and the left opening 115L is blocked by the left sub-beam 120L. The right sub-beam 120R and the left sub-beam 120L constitute the left and right ends of the motor housing 110. The motor housing 115 helps to improve the strength of the suspension 100. In addition, the above-described structure helps to make the overall shape of the suspension incorporating the motor 110 simpler and smaller than before. Other structural features and advantages of the suspension 100 are described later.

[0037] (Second Embodiment) Refer to Figure 5 , 6 The suspension 200 of the second embodiment is described. Figure 5 This is a top view of suspension 200. Figure 6 It is along Figure 5 A cross-sectional view of the suspension 200 taken along line VI-VI. The suspension 200, like the suspension 100, supports the rear wheel 13 (axle 140) of the electric vehicle and includes a motor 210 that drives the rear wheel 13 (axle 140).

[0038] The suspension beam 220 is divided into a right sub-beam 220R and a left sub-beam 220L. The right sub-beam 220R is fixed to the right rear longitudinal beam 11R via a base 123, and the left sub-beam 220L is fixed to the left rear longitudinal beam 11L via a base 123.

[0039] The motor 210 is positioned between the right sub-beam 220R and the left sub-beam 220L. A recess 220Ra is located on the left side of the right sub-beam 220R, and a recess 220La is located on the right side of the left sub-beam 220L. When the right sub-beam 220R and the left sub-beam 220L are joined, the recesses 220Ra and 220La form an internal space 116. The stator 112 and rotor 113 of the motor 210 are housed within this internal space 116. That is, the motor 210 does not have a separate housing; the right sub-beam 220R and the left sub-beam 220L constitute the motor's housing. In other words, the motor 210 is completely assembled inside the suspension beam 220.

[0040] Bearings 117 are respectively disposed in recesses 220Ra and 220La, and a main shaft 111 is supported on the bearings 117. Through holes 125 for the main shaft 111 to pass through are respectively provided in recesses 220Ra and 220La, and the gap between the inner surface of the through hole 125 and the main shaft 111 is sealed by a seal 124.

[0041] In suspension 200, suspension beams 220 (right sub-beam 220R and left sub-beam 220L) house the stator 112 and rotor 113 of motor 210. Suspension 200 does not require a separate motor housing, thus having the advantage of fewer parts. The other structural features of suspension 200 are the same as those of suspension 100.

[0042] (Third Embodiment) Refer to Figure 7 , 8 The suspension 300 of the third embodiment is described. Figure 7 This is a top view of the suspension 300. Figure 8 It is along Figure 7 A sectional view of the suspension 300 cut along line VIII-VIII. Figure 7 , 8 The diagram only depicts the suspension 300, omitting illustrations of the rear longitudinal beam and rear wheels that fix the suspension 300. Additionally, in... Figure 7 , 8 Only the suspension beam 320 and the motor 310 are depicted in the figure; other components of the suspension 300, such as the steering knuckle, upper arm, lower arm, and shock absorber, are omitted from the figure.

[0043] Suspension 300 supports the rear wheel 13 (axle 140) of the electric vehicle in the same manner as suspension 100 and includes motor 310 that drives the rear wheel 13 (axle 140).

[0044] The suspension 300 includes a suspension beam 320 and a motor 310. Unlike suspensions 100 and 200, the suspension beam 320 is not divided into left and right sections. Front arms 121 are located on the left and right sides of the front of the suspension beam 320, and rear arms 122 are located on the left and right sides of the rear. A base 123 is mounted at the end of each of the front arms 121 and rear arms 122, and the suspension 300 is fixed to the rear longitudinal beam (not shown) via the base 123.

[0045] A motor 310 is mounted on the lower surface of the suspension beam 320 (see reference). Figure 8 In the figure, the bolts that mount the motor 310 to the suspension beam 320 are omitted from the diagram.

[0046] The motor 310 includes a stator 112, a rotor 113, a main shaft 111, and a motor housing 315. The stator 112, rotor 113, and a portion of the main shaft 111 are housed within the motor housing 315. A through-hole for the main shaft 111 to pass through is provided in the motor housing 315, and a bearing 117 and a seal 124 are disposed within this through-hole. The bearing 117 rotatably supports the main shaft 111. The seal 124 seals the gap between the inner surface of the through-hole and the main shaft 111.

[0047] The upper opening 315a of the motor housing 315 is sealed by the suspension beam 320. That is, the suspension beam 320 forms part of the housing that accommodates the stator 112 and the rotor 113. In other words, the suspension beam 320 faces the stator 112. By sealing the opening 315a of the motor housing 315 through the suspension beam 320, the internal space 116 accommodating the stator 112 and the rotor 113 is sealed.

[0048] The suspension beam 320 also serves as part of the housing that houses the stator 112 and rotor 113 of the motor. With this structure, the suspension 300 has the advantage of fewer parts compared to existing structures where the suspension and motor are separate.

[0049] (Fourth embodiment) Figures 9 to 11 The suspension 400 in the fourth embodiment is indicated. Figure 9 This is a top view of the suspension 400. Figure 10 This is the rear view of the suspension 400. Figure 11 It is along Figure 9 A cross-sectional view of the suspension 400 cut along the XI-XI line.

[0050] Suspension 400 supports axle 140 in the same manner as suspension 100 and has motor 410 for driving axle 140. Suspension 400 is fixed to the rear longitudinal beams 11R and 11L of the electric vehicle.

[0051] The suspension 400 includes a suspension beam 420 and a motor 410. The suspension beam 420 is divided into a right sub-beam 420R and a left sub-beam 420L. The motor 410 is located between the right sub-beam 420R and the left sub-beam 420L.

[0052] In the first embodiment of the suspension 100, the right sub-beam 120R and the left sub-beam 120L also serve as part of the motor housing. However, in the fourth embodiment of the suspension 400, the right sub-beam 420R and the left sub-beam 420L do not serve as the motor housing. The right sub-beam 420R and the left sub-beam 420L are mounted on the outside of the motor housing 415. Furthermore, the bolts used to mount the sub-beams to the motor housing are omitted from the figures.

[0053] The motor 410 includes a stator 112, a rotor 113, a main shaft 111, and a motor housing 415 that houses them. As described above, the right sub-beam 420R and the left sub-beam 420L are mounted on the outer side of the motor housing 415. The right sub-beam 420R is mounted on the outer right side of the motor housing 415, and the left sub-beam 420L is mounted on the outer left side of the motor housing 415.

[0054] like Figure 11 As shown, the motor housing 415 completely houses the stator 112 and the rotor 113. Through holes are provided on both sides of the motor housing 415 for the main shaft 111 to pass through, and bearings 117 for rotating support of the main shaft 111 are disposed in these through holes. Seals 124 for sealing the area around the main shaft 111 are also disposed in the through holes.

[0055] The right sub-beam 420R and the left sub-beam 420L each have a front arm 121 at the front end and a rear arm 122 at the rear end. The right sub-beam 420R (left sub-beam 420L) is fixed to the rear longitudinal beam 11R (11L) via a base 123 located at the end of the front arm 121 and the rear arm 122.

[0056] In the suspension 400, the upper arm 131 and the trailing arm 401 support the steering knuckle 133. The upper arm 131 is pivotally supported on the upper part of the suspension beam 420. Although not shown in the figure, the front end of the trailing arm 401 is pivotally supported on the vehicle body.

[0057] The following is a summary of several features of the suspensions 100, 200, 300, and 400 in the embodiments.

[0058] Suspension beams 120, 220, and 320 also serve as at least a portion of the housing for the stator and rotor of the motor. In other words, suspension beams 120, 220, and 320 face the stator 112 of the motor. Based on this structural feature, the suspension 100-300 has fewer components compared to existing structures where the suspension and motor are separate.

[0059] The suspension beam 120 is divided into a right sub-beam 120R and a left sub-beam 120L, which are respectively mounted on the vehicle body (rear longitudinal beam). The motor 110 is positioned between the right sub-beam 120R and the left sub-beam 120L. The motor housing 115 has openings at both ends along the axle axis. The right sub-beam 120R blocks the right-side opening 115R of the motor housing 115, and the left sub-beam 120L blocks the left-side opening 115L of the motor housing 115. This structure simplifies the assembly process of the unit integrating the suspension and motor (motor-integrated suspension). Furthermore, the motor housing 115 helps improve the rigidity of the suspension beam 120.

[0060] The motor 210 of the suspension 200 does not have a dedicated housing. The right sub-beam 220R of the suspension beam 220 has a recess 220Ra, and the left sub-beam 220L has a recess 220La. When the right sub-beam 220R and the left sub-beam 220L are joined, the recesses 220Ra and 220La are combined, completing the internal space 116 that houses the stator 112 and the rotor 113. That is, the right sub-beam 220R and the left sub-beam 220L also serve as the motor housing. In the suspension 200, the motor does not have a separate housing, thus reducing the number of components compared to existing structures.

[0061] The features of the suspension 300 are described below. The suspension beam 320 is not divided into left and right sections and serves as part of the housing that houses the stator 112 and rotor 113 of the motor. The upper opening of the motor housing 315 is blocked by the suspension beam 320. The suspension beam 320 faces the stator 112. This structure also reduces the number of parts compared to existing structures.

[0062] The suspension beam 420 of the suspension 400 is divided into a right sub-beam 420R and a left sub-beam 420L, with the motor 410 positioned between them. This structure ensures space in front of and behind the motor 410, allowing other equipment to be installed within this space. The suspension 100 also has the same advantage. Furthermore, the suspension beam 420 does not serve as the motor housing. The right sub-beam 420R and the left sub-beam 420L are respectively fixed to the outer side of the motor housing 415.

[0063] Common structural features of the suspensions 100-400 in multiple embodiments will be described. The steering knuckle 133 rotatably supports the axle 140. At least one of the upper arm 131 and the lower arm 132 supporting the steering knuckle 133 is mounted on the suspension beam 120 (220-420).

[0064] In the suspension 100-400 of the embodiments, the motor main shaft 111 is coaxially configured with the rear wheel axle 140. A gear set may also be configured between the motor main shaft 111 and the axle 140. The main shaft 111 and the axle 140 may also not be coaxially configured.

[0065] Taking suspension 100 as an example, features related to the size of the suspension in the embodiment will be described. Figure 12 This is another top view of suspension 100. Figure 12 The illustrations in the accompanying drawings have omitted the reference numerals for several components.

[0066] A front arm 121 extending in a right-forward direction is provided at the front end of the right sub-beam 120R, and a rear arm 122 extending in a right-rear direction is provided at the rear end. A front arm 121 extending in a left-forward direction is provided at the front end of the left sub-beam 120L, and a rear arm 122 extending in a left-rear direction is provided at the rear end. The front arm 121 and the rear arm 122 have a base 123 at their ends, and the suspension 100 is fixed to the vehicle body (rear longitudinal beam) via the base 123.

[0067] The longitudinal lengths of both the right sub-beam 120R and the left sub-beam 120L are longer than the longitudinal length of the motor. Furthermore, the lateral lengths of both the right sub-beam 120R and the left sub-beam 120L are longer than the lateral length of the motor. More preferably, the lateral lengths of the right sub-beam 120R and the left sub-beam 120L are longer than the lateral lengths of the drive unit, which includes the motor and gears. These features make it difficult for motor vibrations to be transmitted to the vehicle body.

[0068] like Figure 12 As shown, a space Sa is ensured between the line La connecting the right front end PfR and the left front end PfL of suspension beam 120 and the center of the front end of suspension 100. A space Sb is ensured between the line Lb connecting the right rear end PrR and the left rear end PrL of suspension beam 120 and the center of the rear end of suspension 100. A space Sc is ensured between the line Lc connecting the right front end PfR and the right rear end PrR of suspension beam 120 and the center of the right side of suspension 100. A space Sd is ensured between the line Ld connecting the left front end PfL and the left rear end PrL of suspension beam 120 and the center of the left side of suspension 100. Additional equipment can be configured in these spaces Sa-Sd. Suspension 200-400 also have the same advantages.

[0069] Figure 13 This is a side view of a modified suspension 500. The suspension has an inverter 150F at the front of the motor 110. Alternatively, the suspension may have an inverter 150R at the rear of the motor 110. The inverter 150F (150R) is a device that supplies alternating current to the motor 110. The suspensions 100-400 in these embodiments may have an inverter at either the front or rear of the motor.

[0070] Figure 14This is a rear view of a suspension 600 showing another variation. The suspension 600 includes a suspension beam 620. The suspension beam 620 is divided into a right sub-beam 620R and a left sub-beam 620L. A motor 110 is disposed between the right sub-beam 620R and the left sub-beam 620L. Multiple ribs 621 are provided on the rear surface of each of the right sub-beam 620R and the left sub-beam 620L. The multiple ribs 621 are arranged in a lattice pattern. The multiple ribs 621 facilitate heat dissipation for the motor 110. Furthermore, the multiple ribs 621 also contribute to improving the strength of the suspension 600.

[0071] The suspension 600 may also have multiple ribs on the front surfaces of both the right sub-beam 620R and the left sub-beam 620L. Alternatively, the right sub-beam 620R and the left sub-beam 620L may each have multiple ribs on both their front and rear surfaces. Alternatively, the suspensions 100-400 of the embodiments may each have ribs on at least one of the front and rear surfaces of the suspension beams. When applying the integrated motor suspension of the embodiments to a suspension where the lower arm is mounted on the front surface (e.g., a trailing double wishbone type), it is preferable that the right sub-beam 620R and the left sub-beam 620L each have multiple ribs on their front surfaces. When applying the integrated motor suspension of the embodiments to a suspension where the lower arm is mounted on the rear surface (e.g., a multi-link type), it is preferable that the right sub-beam 620R and the left sub-beam 620L each have multiple ribs on their rear surfaces.

[0072] The suspensions 100-600 in the embodiments are all integrated motor suspensions, where the suspension beam and motor are combined. The integrated motor suspension disclosed in this specification can be applied to electric vehicles. The integrated motor suspension disclosed in this specification can also be used as an auxiliary drive device in hybrid vehicles and fuel cell vehicles. The integrated motor suspension disclosed in this specification can be applied to the rear wheels or the front wheels of a vehicle.

[0073] There are several types of suspensions (strut type, double wishbone type, multi-link type, and other independent suspensions). The technology disclosed in this specification can be applied to any type of suspension.

[0074] The specific examples of the present invention have been described in detail above, but these are merely illustrative and do not limit the scope of the claims. The technology described in the claims includes technologies obtained by various modifications and alterations to the specific examples described above. The technical elements described in this specification or drawings exert their technical usefulness individually or in various combinations, and are not limited to the combinations described in the claims at the time of application. In addition, the technology illustrated in this specification or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives is itself technically useful.

Claims

1. A motor-integrated suspension, wherein, have: Electric motor, driving axle; and Suspension beams are installed on the vehicle body. The suspension beam also serves as at least a portion of the housing that houses the stator and rotor of the motor.

2. The integrated motor suspension according to claim 1, wherein, The suspension beam faces the stator of the motor.

3. The integrated motor suspension according to claim 1, wherein, The suspension beam is divided into a right sub-beam and a left sub-beam, which are respectively installed on the vehicle body. The motor has a motor housing that houses the stator and rotor, and the motor has openings at both ends in the direction of the main shaft. The right sub-beam blocks one of the openings, and the left sub-beam blocks the other opening.

4. The integrated motor suspension according to claim 3, wherein, The right sub-beam and the left sub-beam are longer than the motor housing in the longitudinal direction of the vehicle body.

5. The integrated motor suspension according to claim 3, wherein, Multiple ribs are provided on the front or rear surface of the right sub-beam and the left sub-beam respectively.

6. The integrated motor suspension according to claim 1, wherein, The device includes an inverter that supplies power to the motor and is positioned in front of or behind the motor.

7. The integrated motor suspension according to claim 1, wherein, The motor's main shaft is coaxially configured with the vehicle axle.

8. The integrated motor suspension according to claim 1, wherein, Ensure that there is space between the line segment connecting the right and left front ends of the suspension beam and the center of the front end of the integrated motor suspension.

9. The integrated motor suspension according to claim 1, wherein, Ensure that there is space between the line segment connecting the right and left rear ends of the suspension beam and the center of the rear end of the integrated motor suspension.

10. The integrated motor suspension according to claim 1, wherein, Ensure there is space between the line segment connecting the right front end and right rear end of the suspension beam and the center of the right side of the suspension beam. Ensure that there is space between the line segment connecting the left front end and left rear end of the suspension beam and the center of the left side of the suspension beam.

11. The integrated motor suspension according to claim 1, wherein, At least one of the upper arm and lower arm that supports the steering knuckle of the swivelly supported axle is mounted on the suspension beam.

12. A type of automobile, wherein, have: The integrated motor suspension as described in claim 1; Front wheels; and rear wheel, The motor drives the rear wheel.

13. A motor-integrated suspension, wherein, have: Electric motor, driving axle; and The suspension beam is divided into a right sub-beam and a left sub-beam, and each is installed on the vehicle body. The motor is positioned between the right sub-beam and the left sub-beam.

14. The integrated motor suspension according to claim 13, wherein, The right sub-beam and the left sub-beam are longer than the motor housing in the longitudinal direction of the vehicle body.

15. The integrated motor suspension according to claim 13, wherein, Multiple ribs are provided on the front or rear surface of the right sub-beam and the left sub-beam respectively.

16. The integrated motor suspension according to claim 13, wherein, The device includes an inverter that supplies power to the motor and is positioned in front of or behind the motor.

17. The integrated motor suspension according to claim 13, wherein, Ensure that there is space between the line segment connecting the right and left front ends of the suspension beam and the center of the front end of the integrated motor suspension.

18. The integrated motor suspension according to claim 13, wherein, Ensure that there is space between the line segment connecting the right and left rear ends of the suspension beam and the center of the rear end of the integrated motor suspension.

19. The integrated motor suspension according to claim 13, wherein, Ensure there is space between the line segment connecting the right front end and right rear end of the suspension beam and the center of the right side of the suspension beam. Ensure that there is space between the line segment connecting the left front end and left rear end of the suspension beam and the center of the left side of the suspension beam.

20. The integrated motor suspension according to claim 13, wherein, At least one of the upper arm and lower arm that supports the steering knuckle of the swivelly supported axle is mounted on the suspension beam.

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