An electric motor vehicle motor suspension assembly

Abstract

The application discloses a motor suspension assembly of an electric vehicle and belongs to the field of automobile parts, which comprises a shell and a bushing, the shell is in a discoid structure, the shell is sleeved outside the bushing, a connecting piece is wrapped in the rubber part of the bushing, the longitudinal section of the connecting piece is in a T-shaped structure, the connecting piece comprises a connecting bottom plate and a connecting column, the connecting column extends out of the rubber part, passes through the bottom surface of the shell and is locked with the shell through a locking piece. The connecting piece is arranged in the rubber part of the bushing to be connected with the shell, so that the connecting assembly of the shell and the bushing is facilitated, and the shaft diameter ratio of the suspension assembly is adjusted.

Description

Technical Field

[0001] This application relates to the field of automotive parts, and in particular to a motor mounting assembly for an electric vehicle. Background Technology

[0002] The layout and optimization of powertrain mounting systems in gasoline-powered vehicles have been extensively explored by numerous researchers, resulting in a relatively complete set of methods. The basic approach involves using torque axis, rigid body modes, and energy decoupling as indicators to develop the vibration isolation capabilities of the mounting system. Multibody dynamics or finite element analysis of the entire vehicle is then used to optimize the position and stiffness of the mountings, thereby improving the overall NVH performance.

[0003] Electric vehicles are driven by electric motors. Vibration-damping mounts are installed between the drive motor and the connected frame to block and reduce high-frequency vibrations and high-frequency howling noise. The vibration excitation mode of electric motor drive differs significantly from that of internal combustion engines, so the mount matching method should be modified accordingly. Relevant prior art, such as Chinese patent application "Motor Mount," application number CN202010696479.2, discloses a method that uses a core tube inside a hollow cylindrical or hollow drum-shaped sheath, and then uses a rubber body to bond the sheath, core tube, and resonant mass blocks evenly distributed around the core tube inside the sheath to form a whole. This effectively absorbs and blocks high-frequency vibrations and howling noise emitted by the electric vehicle drive motor when it is suspended on the frame, especially high-frequency vibrations and howling noise above 800Hz, providing a comfortable driving experience for electric vehicle occupants, reducing driver fatigue, and ensuring driving safety. This invention creates a resonant structure by implanting a resonant mass block into a rubber body. Through the self-vibration of this resonant structure, the high-frequency hardening of the rubber body can be effectively reduced, and its high-frequency dynamic stiffness can be decreased, thereby better reducing the high-frequency vibration and high-frequency howling noise of the drive motor.

[0004] For example, the Chinese patent application "A motor assembly suspension structure and suspension system for a pure electric vehicle", application number: CN201911414626.6, discloses that the motor assembly suspension structure includes: a bushing, which includes an outer metal frame and an inner metal frame, the inner metal frame being located inside the outer metal frame, the outer diameter of the inner metal frame being smaller than the inner diameter of the outer metal frame, and a rubber body being provided between the outer metal frame and the inner metal frame; a suspension connecting bracket, which has mounting holes for connecting to the motor assembly, and the suspension connecting bracket is connected to the bushing through the inner metal frame; and a rubber anti-collision pad, which is located between the bushing and the suspension connecting bracket.

[0005] Current automotive manufacturers demand high wheelbase-to-diameter ratio suspension structures to further improve vehicle handling and comfort. To maintain vehicle stability and handling, the suspension system also requires a certain level of radial stiffness and axial height. For example, during high-speed driving or sharp cornering, vehicles require higher stability and handling, thus necessitating an appropriate increase in axial stiffness. Therefore, the design of automotive suspension systems needs to balance the relationship between comfort and handling. Based on this, this application proposes further improvements to the automotive motor mount assembly. Summary of the Invention

[0006] The technical problem to be solved by this application is to provide a motor mount assembly for an electric vehicle that facilitates the connection and assembly of the housing and bushing, and allows for adjustment of the shaft diameter ratio of the mount assembly.

[0007] The technical solution adopted in this application is: a motor mounting assembly for an electric vehicle, including a housing and a bushing. The housing has a disc-shaped structure and is fitted over the bushing. A connector is wrapped inside the rubber part of the bushing. The longitudinal section of the connector has a T-shaped structure. The connector includes a connecting base plate and a connecting post. The connecting post extends out of the rubber part, passes through the bottom surface of the housing, and is locked to the housing by a locking member.

[0008] Compared with existing technologies, the advantages of this application are that the bushing and housing in traditional structures use an interference fit connection. This application, however, adds a connecting piece and a locking piece to further strengthen the connection between the housing and the bushing, increasing the bushing pull-out force. The connecting piece in this application has a T-shaped longitudinal section. By embedding the connecting piece into the rubber component, the axial stiffness of the suspension assembly can be significantly improved, thereby allowing for a wide range of adjustments to the suspension's shaft-to-diameter ratio. In traditional bushing suspension structures, the suspension stiffness-to-diameter ratio is generally around 0.3, while this application can achieve a shaft-to-diameter ratio of 0.5, meeting the requirements for high-frequency lateral decoupling during system decoupling.

[0009] In some embodiments of this application, the surface of the housing is provided with multiple connection holes for connection to the vehicle body. One end of the bushing is connected to the housing via a connector and a locking member, while the other end of the bushing is connected to the support arm, which in turn connects to the motor. Specifically, the inner core of the bushing, which encloses a rubber component, is connected to the support arm.

[0010] In some embodiments of this application, a mounting groove is formed on one end face of the rubber component, and the connector is embedded in the mounting groove; the outer periphery of the connecting base plate is wrapped by the rubber component. The connecting base plate can be an elliptical structure, a rectangular structure, or other irregular shapes. An elliptical structure is the preferred embodiment of this application.

[0011] In this application, for ease of description, the direction of the long axis of the base plate is defined as the transverse direction, the direction of the short axis of the base plate is defined as the longitudinal direction, and the axis of the motor mounting assembly is perpendicular to both the transverse and longitudinal directions.

[0012] In this application, the base plate structure is set to be elliptical rather than circular, which makes the structural strength of the base plate in the long axis direction (lateral direction) greater than the structural strength in the short axis direction (longitudinal direction) of the entire structure.

[0013] In some embodiments of this application, the locking member is a stepped frustum-shaped locking nut, the connecting post is provided with external threads, the locking member is provided with internal threads, and the connecting post and the locking member are threadedly connected.

[0014] Specifically, the diameter of the locking member closer to the housing is larger than the diameter of the member farther from the housing. This increases the contact area between the locking member and the housing, improving the stability of the connection structure of this application.

[0015] In some embodiments of this application, the bushing includes an inner core, an outer sleeve, and a rubber component. The outer sleeve is a ring-shaped structure fitted around the outer periphery of the inner core, and the rubber component wraps around the inner core and is connected to the inner wall of the outer sleeve. In this application, the inner core, outer sleeve, and connecting component are integrally vulcanized with the rubber component.

[0016] In some embodiments of this application, the inner core includes a cylindrical portion, a disc portion, and an annular portion connected sequentially along the axial direction. The diameter of the disc portion is larger than the outer diameter of the cylindrical portion, and the diameter of the disc portion is larger than the diameter of the annular portion. The disc portion and the annular portion form a groove. The disc portion provides axial (Y-direction) limiting, while the annular portion restricts the movement displacement of the connecting column, effectively improving product durability.

[0017] During vehicle operation, the forces acting on the motor mount assembly are not equal in different directions, and can even vary significantly. Therefore, using a single cylindrical structure and making minor modifications to the rubber components is insufficient to meet the shock absorption and cushioning requirements of the motor mount during driving. Considering these issues, the invention of this application employs significant modifications to the inner core structure.

[0018] The inner core of this application is connected axially in a cylindrical part, a disc part, and an annular part, with the disc part located between the cylindrical part and the annular part having the largest diameter, which effectively increases the axial force and improves the reliability of the connection between the rubber part and the inner core.

[0019] In some embodiments of this application, the cross-section of the cylindrical portion is generally elliptical with its major axis in the longitudinal direction and its minor axis in the transverse direction. The diameter of the end of the cylindrical portion away from the connector is larger than the diameter of the end closer to the connector, and the inner wall surface of the cylindrical portion is an inclined surface. Specifically, the length of the major axis of the cylindrical portion is 2 to 3 times the length of the minor axis.

[0020] This application uses a cylindrical section with a significant difference in length between its major and minor axes as part of the inner core, which can effectively improve the stiffness along the length of the cylinder's major axis and enhance the elastic cushioning performance along the minor axis. In the minor axis direction, the thickness of the rubber component is more than twice the length of the minor axis.

[0021] In some embodiments of this application, a reinforcing ring is provided around the outer periphery of the middle part of the cylindrical portion. The reinforcing ring is a disc-shaped structure coaxially arranged with the cylindrical portion, and the diameter of the reinforcing ring is equal to the diameter of the disc portion. The side of the reinforcing ring closer to the connector is the back side, and the side of the reinforcing ring farther from the connector is the front side. The back side of the reinforcing ring is a curved surface with a central outward convexity, and the front side of the reinforcing ring is a flat surface. Multiple reinforcing plates are regularly arranged on the front side of the reinforcing ring, and the reinforcing plates connect the reinforcing ring to the outer peripheral surface of the cylindrical portion.

[0022] The reinforcing sheet extends to the end face of the cylinder, and the reinforcing sheet is a triangular sheet structure or a rectangular sheet structure. Specifically, the triangular sheet structure is located in the middle, and the rectangular sheet structure is located on both sides.

[0023] With the help of the reinforcing ring and the disc portion, the inner core of this application has a structure that is large at both ends and small in the middle. Furthermore, the cylindrical structure of the inner core makes the longitudinal structural strength greater than the transverse structural strength.

[0024] In some embodiments of this application, the side of the disc portion closer to the connector is the front side, the side of the disc portion away from the connector is the back side, the back side of the disc portion is a curved surface with a central outward convexity, and the front side of the disc portion is a flat surface; the transverse diameter of the annular portion is greater than the longitudinal diameter.

[0025] The structure of the disc portion and the reinforcing ring ensures that the inner core is stably embedded in the rubber component, preventing it from easily detaching from the rubber component even under stress. The disc portion and the reinforcing ring improve the axial stiffness of this application and also provide high radial stiffness.

[0026] In some embodiments of this application, the disc portion is provided with a plurality of through holes, the cylindrical portion located between the disc portion and the reinforcing ring is provided with a plurality of through holes, and the cylindrical portion located between the reinforcing plates is provided with a plurality of through holes.

[0027] The through-hole structure allows the rubber component to fill the through-holes during the vulcanization process of the inner core and the rubber component, further improving the reliability of the connection between the rubber component and the inner core.

[0028] In some embodiments of this application, the rubber component includes an inner ring portion wrapped around the inner core, an outer ring portion lining the inner wall of the outer sleeve, and four support portions connecting the inner ring portion and the outer ring portion. The support portions are located at the four corners of the connector. In this application, the rubber component serves to improve radial stiffness and isolate vibrations.

[0029] Multiple buffer blocks are provided on the inner wall surface of the outer ring. The side of the buffer block facing the inner ring has a wave-shaped structure, and a buffer block is provided between two adjacent support parts.

[0030] In the accompanying drawings of this application, the two transverse buffer blocks are Z-axis buffer blocks, which serve to reduce impact noise, improve durability, and reduce dynamic stiffness under high torque. The two longitudinal buffer blocks are X-axis buffer blocks, which also serve to reduce impact noise, improve durability, and reduce dynamic stiffness under high torque.

[0031] The rubber component forms a mounting post within the groove. A gap exists between the outer circumference of the mounting post and the annular portion. The end face of the mounting post has a mounting groove for accommodating the connector. The connector achieves good shock absorption and cushioning performance within the mounting post. Furthermore, the mounting post enhances the axial (Y-direction) stiffness of the product.

[0032] The inner ring portion has multiple raised strips regularly spaced on one side near the connector, and the cross-section of one side of the inner ring portion is serrated. The raised strips effectively reduce axial (Y-direction) impact noise. The raised strips are rubber parts, and in this application, the rubber parts are integrally vulcanized structures.

[0033] The inner ring is cylindrical in shape, with the rubber component fully filling the cylindrical portion between the disc and the reinforcing ring, resulting in a more flexible suspension assembly in the lateral direction with better shock absorption and cushioning performance, and better and more stable suspension stiffness in the longitudinal direction. The two ends of the inner ring are structures that wrap around and conform to the inner core ring and reinforcing sheet.

[0034] Both the disc portion and the reinforcing ring are located inside the outer ring portion.

[0035] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0036] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0037] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ; Figure 3 This is a side view of this application; Figure 4 for Figure 3 A sectional view of section AA in the image; Figure 5 for Figure 3 A sectional view of section BB in the image; Figure 6 This is a schematic diagram of the bushing structure in this application. Figure 1 ; Figure 7 This is a schematic diagram of the bushing structure in this application. Figure 2 ; Figure 8 This is a schematic diagram of the inner core structure in this application; Figure 9 This is a top view of the inner core in this application; Figure 10 This is a side view of the inner core in this application; Figure 11 This is a cross-sectional view along the short axis of the inner core in this application.

[0038] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Shell; 2. Connecting base plate; 3. Connecting post; 4. Locking element; 5. Rubber part; 51. Inner ring; 52. Outer ring; 53. Support part; 54. Mounting post; 6. Mounting groove; 7. Inner core; 71. Cylindrical part; 72. Disc part; 73. Circular part; 74. Reinforcing ring; 75. Reinforcing piece; 8. Outer jacket; 9. Groove; 10. Through hole; 11. Buffer block; 12. Connecting hole. Detailed Implementation

[0039] The present application will now be described in detail with reference to the accompanying drawings.

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] An electric vehicle motor mounting assembly, as described in Embodiment 1 Figures 1 to 5As shown, the system includes a housing 1 and a bushing. The housing 1 has a disc-shaped structure and is fitted over the bushing. A connector is encased within the rubber component 5 of the bushing. The connector has a T-shaped longitudinal section. By embedding the connector within the rubber component 5, the axial stiffness of the suspension assembly can be significantly improved, thereby allowing for a wide range of adjustments to the suspension's shaft-to-diameter ratio. The connector includes a connecting base plate 2 and a connecting post 3. The connecting post 3 extends out of the rubber component 5, passes through the bottom surface of the housing 1, and is locked to the housing 1 by a locking component 4, which increases the bushing pull-out force. In traditional bushing suspension structures, the suspension stiffness-to-diameter ratio is generally around 0.3. This application can achieve a shaft-to-diameter ratio of 0.5, meeting the requirements for high lateral frequencies during system decoupling.

[0042] The housing 1 has multiple connection holes 12 on its surface for connection to the vehicle body. One end of the bushing is connected to the housing 1 via a connector and a locking member 4, while the other end of the bushing is connected to the support arm, which in turn connects to the motor. Specifically, the bushing connects to the support arm at the inner core 7, which is wrapped with the rubber component 5.

[0043] Example 2, as Figures 1 to 5 As shown, a mounting groove 6 is formed on one end face of the rubber component 5, and the connector is embedded in the mounting groove 6; the outer periphery of the connecting base plate 2 is wrapped by the rubber component 5. The connecting base plate 2 can be an elliptical structure, a rectangular structure, or other irregular shapes. Among them, the connecting base plate 2 is an elliptical structure, which is the preferred embodiment of this application.

[0044] In this application, for ease of description, the direction of the long axis of the elliptical connecting base plate 2 is taken as the transverse direction, the direction of the short axis of the connecting base plate 2 is taken as the longitudinal direction, and the axis of the motor mounting assembly is perpendicular to both the transverse and longitudinal directions.

[0045] In this application, the base plate structure is set to be elliptical rather than circular, which makes the transverse structural strength of the base plate in the major axis direction greater than the longitudinal structural strength in the minor axis direction.

[0046] The locking element 4 is a stepped frustum-shaped locking nut. The connecting post 3 has external threads, and the locking element 4 has internal threads. The connecting post 3 and the locking element 4 are threadedly connected. Specifically, the diameter of the locking element 4 on the side closer to the housing 1 is larger than the diameter on the side farther from the housing 1. This increases the contact area between the locking element 4 and the housing 1, improving the stability of the connection structure of this application.

[0047] The rest of the contents of Example 2 are the same as those of Example 1.

[0048] Example 3, as Figures 6 to 11As shown, the bushing includes an inner core 7, an outer sleeve 8, and a rubber component 5. The outer sleeve 8 has a circular structure and is fitted around the outer periphery of the inner core 7. The rubber component 5 wraps around the inner core 7 and is connected to the inner wall surface of the outer sleeve 8. In this application, the inner core 7, the outer sleeve 8, and the connector are integrally vulcanized with the rubber component 5.

[0049] The inner core 7 includes a cylindrical portion 71, a disc portion 72, and an annular portion 73 connected sequentially along the axial direction. The diameter of the disc portion 72 is larger than the outer diameter of the cylindrical portion 71, and the diameter of the disc portion 72 is larger than the diameter of the annular portion 73. The disc portion 72 and the annular portion 73 form a groove 9. The disc portion 72 provides axial Y-direction limiting, while the annular portion 73 restricts the movement displacement of the connecting column, effectively improving product durability.

[0050] During vehicle operation, the forces acting on the motor mount assembly are not equal in different directions, and can even vary significantly. Therefore, using a single cylindrical structure and making minor modifications to the rubber component 5 is insufficient to meet the shock absorption requirements of the motor mount during driving. Considering these issues, this invention employs significant modifications to the inner core 7 structure.

[0051] In this application, the inner core 7 is connected axially in sequence with a cylindrical portion 71, a disc portion 72, and an annular portion 73. The disc portion 72, located between the cylindrical portion 71 and the annular portion 73, has the largest diameter, which effectively increases the force in the axial direction and improves the reliability of the connection between the rubber part 5 and the inner core 7.

[0052] The cross-section of the cylindrical portion 71 is basically elliptical with the major axis in the longitudinal direction and the minor axis in the transverse direction. The diameter of the end of the cylindrical portion 71 furthest from the connector is larger than the diameter of the end closest to the connector, and the inner wall surface of the cylindrical portion 71 is inclined. Specifically, the length of the major axis of the cylindrical portion 71 is 2 to 3 times the length of the minor axis.

[0053] This application uses a cylindrical portion 71 with a large difference between its long and short axis lengths as part of the inner core 7, which can effectively improve the stiffness in the length direction of the long axis of the cylindrical portion 71 and improve the elastic buffering performance in the short axis direction of the cylindrical portion 71. In the short axis direction of the cylindrical portion 71, the thickness of the rubber part 5 is more than twice the length of the short axis of the cylindrical portion.

[0054] A reinforcing ring 74 is provided around the outer periphery of the middle part of the cylindrical portion. The reinforcing ring 74 is a disc-shaped structure coaxial with the cylindrical portion. The diameter of the reinforcing ring 74 is equal to the diameter of the disc portion 72. The side of the reinforcing ring 74 closest to the connector is the back side, and the side of the reinforcing ring 74 furthest from the connector is the front side. The back side of the reinforcing ring 74 is a curved surface with a central outward convexity, and the front side of the reinforcing ring 74 is a flat surface. Multiple reinforcing plates 75 are regularly arranged on the front side of the reinforcing ring 74. The reinforcing plates 75 connect the reinforcing ring 74 to the outer peripheral surface of the cylindrical portion 71.

[0055] The reinforcing piece 75 extends to the end face of the cylindrical portion, and the reinforcing piece 75 is a triangular or rectangular sheet structure. Specifically, the triangular sheet structure reinforcing piece 75 is located in the middle, and the rectangular sheet structure reinforcing pieces 75 are located on both sides. Under the action of the reinforcing ring 74 and the disc portion 72, the inner core 7 of this application has a structure that is large at both ends and small in the middle. Furthermore, the structural arrangement of the cylindrical portion 71 of the inner core 7 makes the longitudinal structural strength greater than the transverse structural strength.

[0056] The side of the disc portion 72 closest to the connector is the front side, and the side of the disc portion 72 furthest from the connector is the back side. The back side of the disc portion 72 is a curved surface with a central outward convexity, and the front side of the disc portion 72 is a flat surface. The transverse diameter of the ring portion 73 is greater than its longitudinal diameter.

[0057] The structural arrangement of the disc portion 72 and the reinforcing ring 74 ensures that the inner core 7 is stably embedded in the rubber part 5, making it difficult for the inner core 7 to detach from the rubber part 5 even under stress. The disc portion 72 and the reinforcing ring 74 improve the axial stiffness of this application and also provide high radial stiffness.

[0058] The disc portion 72 is provided with a plurality of through holes 10, the cylindrical portion 71 located between the disc portion 72 and the reinforcing ring 74 is provided with a plurality of through holes 10, and the cylindrical portion 71 located between the reinforcing plates 75 is provided with a plurality of through holes 10. The through hole 10 structure allows the rubber component 5 to fill the through holes 10 during the integral vulcanization process between the inner core 7 and the rubber component 5, further improving the reliability of the connection between the rubber component 5 and the inner core 7.

[0059] The rubber component 5 includes an inner ring portion 51 wrapped around the inner core 7, an outer ring portion 52 lining the inner wall of the outer sleeve 8, and four support portions 53. The support portions 53 connect the inner ring portion 51 and the outer ring portion 52, and are located at the four corners of the connector. In this application, the rubber component 5 serves to improve radial stiffness and isolate vibration.

[0060] Multiple buffer blocks 11 are provided on the inner wall surface of the outer ring portion 52. The side of the buffer block 11 facing the inner ring portion 51 has a wave-shaped structure, and a buffer block 11 is provided between two adjacent support portions 53.

[0061] In the accompanying drawings of this application, the two transverse buffer blocks 11 are Z-axis buffer blocks, which serve to reduce impact noise, improve durability, and reduce dynamic stiffness under high torque. The two longitudinal buffer blocks 11 are X-axis buffer blocks, which also serve to reduce impact noise, improve durability, and reduce dynamic stiffness under high torque.

[0062] The rubber component 5 forms a mounting post 54 within the groove 9. A gap exists between the outer periphery of the mounting post 54 and the annular portion 73. The end face of the mounting post 54 is provided with a mounting groove 6 to accommodate the connector. The connector achieves good shock absorption and cushioning performance within the mounting post 54. Furthermore, the mounting post 54 enhances the axial Y-direction stiffness of the product.

[0063] The inner ring portion 51 has multiple raised strips regularly spaced on one side near the connector, and the cross-section of one side of the inner ring portion 51 is serrated. The raised strips effectively reduce impact noise in the axial Y direction. The raised strips belong to the rubber part 5, which, in this application, is an integrally vulcanized structure.

[0064] The inner ring portion 51 is integrally cylindrical. The rubber component 5 fully fills the cylindrical portion 71 between the disc portion 72 and the reinforcing ring 74 into a cylindrical shape, making the suspension assembly more flexible in the lateral direction and providing better shock absorption and cushioning performance, while also providing better and more stable suspension stiffness in the longitudinal direction. The two ends of the inner ring portion 51 are structures that wrap around and adapt to the inner core 7's annular portion 73 and the reinforcing plate 75. Both the disc portion 72 and the reinforcing ring 74 are located within the outer ring portion 52.

[0065] The other contents of Example 3 are the same as those of Example 1 or Example 2.

[0066] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A motor mounting assembly for an electric vehicle, characterized in that... Includes a housing (1) and a bushing. The housing (1) has a disc-shaped structure and is fitted over the bushing. A connector is wrapped inside the rubber part (5) of the bushing. The longitudinal section of the connector has a T-shaped structure. The connector includes a connecting base plate (2) and a connecting post (3). The connecting post (3) extends out of the rubber part (5), passes through the bottom surface of the housing (1), and is locked to the housing (1) by a locking part (4). The inner core (7) includes a cylindrical part (71), a disc part (72) and an annular part (73) connected in sequence along the axial direction. The diameter of the disc part (72) is larger than the outer diameter of the cylindrical part (71), and the diameter of the disc part (72) is larger than the diameter of the annular part (73). The disc part (72) and the annular part (73) form a groove (9). The cross-section of the cylindrical part (71) is basically an ellipse with the major axis in the longitudinal direction and the minor axis in the transverse direction. The diameter of the end of the cylindrical part (71) away from the connector is larger than the diameter of the end closer to the connector. The inner wall surface of the cylindrical part (71) is an inclined surface. The rubber part (5) forms a mounting post (54) in the groove (9). There is a gap between the outer periphery of the mounting post (54) and the ring part (73). The end face of the mounting post (54) is provided with a mounting groove (6) for accommodating the connector. The connecting base plate (2) is an elliptical structure. The major axis of the connecting base plate (2) is in the transverse direction and the minor axis is in the longitudinal direction. The locking part (4) is a locking nut in the shape of a stepped frustum. The diameter of the locking part (4) on the side closer to the shell (1) is larger than the diameter on the side farther away from the shell (1).

2. The motor mounting assembly for an electric vehicle according to claim 1, characterized in that... The rubber component (5) has an installation groove (6) on one end face, and the connector is embedded in the installation groove (6); the outer periphery of the connecting base plate (2) is wrapped by the rubber component (5).

3. The motor mounting assembly for an electric vehicle according to claim 1, characterized in that... The connecting post (3) is provided with external threads, and the locking member (4) is provided with internal threads. The connecting post (3) and the locking member (4) are threadedly connected.

4. The motor mounting assembly for an electric vehicle according to claim 1, characterized in that... The rubber part (5) includes an inner ring (51) wrapped around the inner core (7), an outer ring (52) lined to the inner wall of the outer sleeve (8), and four support parts (53). The support parts (53) connect the inner ring (51) and the outer ring (52). The support parts (53) are located at the four corners of the connector.

5. The motor mount assembly for an electric vehicle according to claim 4, characterized in that... Multiple buffer blocks (11) are provided on the inner wall surface of the outer ring (52). The side of the buffer block (11) facing the inner ring (51) has a wave-shaped structure, and a buffer block (11) is provided between two adjacent support parts (53).

6. The motor mount assembly for an electric vehicle according to claim 4, characterized in that... The inner ring (51) has multiple raised strips regularly arranged on one side near the connector. The multiple raised strips are regularly spaced, and the cross-section of one side of the inner ring (51) is serrated.

7. The motor mount assembly for an electric vehicle according to claim 4, characterized in that... The inner ring (51) is cylindrical in shape. The two ends of the inner ring (51) are enclosed and adapted to the inner core (7) ring (73) and reinforcing plate (75). The disc (72) and reinforcing ring (74) are both located inside the outer ring (52).

8. The motor mounting assembly for an electric vehicle according to claim 1, characterized in that... The bushing includes an inner core (7), an outer sleeve (8) and a rubber component (5). The outer sleeve (8) is a ring structure that is fitted around the outer periphery of the inner core (7). The rubber component (5) is wrapped around the inner core (7) and connected to the inner wall of the outer sleeve (8).

Images