Motor suspension device for new energy automobile

Abstract

The invention relates to the technical field of automobile manufacturing, and provides a motor suspension device for a new energy automobile, the motor suspension device comprises a motor box, the two sides of the motor box are respectively connected with a first buffer mechanism and a second buffer mechanism, and the upper ends of the first buffer mechanism and the second buffer mechanism are connected with a transverse suspension; a plurality of buffering air cylinders are connected to the middle of the transverse suspension towards the two sides, the first buffering mechanism and the transverse suspension are connected through the buffering air cylinders, the second buffering mechanism and the transverse suspension are connected through the buffering air cylinders, and anti-impact mechanisms are arranged on the outer side of the first buffering mechanism and the outer side of the second buffering mechanism. A motor box is flexibly connected to a transverse suspension through a first buffering mechanism and a second buffering mechanism which are symmetrically arranged, controllable elastic deformation and sliding displacement are generated through a unique arc-shaped connecting rod and sliding clamping plate combined structure, and multidirectional impact energy from a frame is efficiently absorbed and dissipated; and the operation stability of the motor box and the driving motor in the motor box is fundamentally ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a motor suspension device for a new energy vehicle. Background Art

[0002] An automotive electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. An electric motor, also known as a motor, primarily generates driving torque. As the power source for electric vehicles, the drive motor is typically mounted on the vehicle's drive axle using a suspension bracket. The suspension bracket and motor are connected by bolts. When the vehicle is frequently exposed to vibrating road conditions or after prolonged driving, the bolts can loosen due to movement, causing the connection between the motor and the frame to wobble, thus affecting the motor's proper operation.

[0003] When a vehicle is driving, wheel bouncing caused by uneven road excitation and different driving conditions (acceleration, braking, steering, etc.) will cause motor vibration, thereby affecting the vehicle's driving smoothness, grounding safety, motor performance and motor service life.

[0004] Therefore, we have made improvements to this and proposed a motor suspension device for new energy vehicles. Summary of the Invention

[0005] The object of the present invention is to provide a motor suspension device for new energy vehicles to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a motor suspension device for new energy vehicles, including a motor box, wherein a first buffer mechanism and a second buffer mechanism are respectively connected to both sides of the motor box, the upper ends of the first buffer mechanism and the second buffer mechanism are connected to a transverse suspension, and a plurality of buffer cylinders are connected to the middle of the transverse suspension on both sides. The buffer cylinders connect the first buffer mechanism and the transverse suspension, and the second buffer mechanism and the transverse suspension. Anti-impact mechanisms are provided on the outer sides of the first buffer mechanism and the second buffer mechanism, the middle of the anti-impact mechanism is hinged to the motor box, and the automobile motor is installed inside the motor box.

[0007] As a further solution of the present invention, the first buffer mechanism includes a first swing arm, the upper end of the first swing arm is connected to the buffer cylinder and the connecting plate, the bottom end of the first swing arm is connected to the arc-shaped first connecting rod, the middle of the first connecting rod is provided with a first slide groove, the middle part of the first connecting rod is clamped and installed with a first clamping plate, the other end of the first clamping plate is connected to the middle of the motor box with a first buffer spring, one end of the first clamping plate is installed with a first mounting block, the first mounting block is fixedly installed with the motor box, and the other end of the first clamping plate is connected to the first connecting block on both sides, the first connecting block is slidably installed inside the first slide groove, and a second buffer spring is also connected between the first slide groove and the first connecting block.

[0008] As a further solution of the present invention, the motor box includes a hinged cover and a box body, and the middle part of the box body is hollowed out.

[0009] As a further solution of the present invention, the transverse suspension includes a spring bracket, and a fixed plate and two connecting plates are fixedly installed at the bottom of the spring bracket. The fixed plate is centrally installed at the bottom of the spring bracket, and the two connecting plates are symmetrically installed on both sides of the fixed plate. A screw is fixedly installed in the middle of the connecting plate, and the screw is threadedly connected to the spring bracket.

[0010] As a further solution of the present invention, the anti-impact mechanism includes a protective plate, a connecting piece is connected in the middle of the protective plate, the connecting piece is fixedly welded to the motor box, the upper end of the protective plate is connected to the motor box with a first air spring, and the bottom end of the protective plate is connected to the motor box with a second air spring.

[0011] As a further solution of the present invention, the second buffer mechanism includes a second swing arm, the upper end of the second swing arm is connected to the buffer cylinder and the connecting plate, the bottom end of the second swing arm is connected to the arc-shaped second connecting rod, a second slide groove is opened in the middle of the second connecting rod, a second clamping plate is clamped and installed in the middle of the second connecting rod, the other end of the second clamping plate is connected to the middle of the motor box with a third buffer spring, one end of the second clamping plate is installed with a second mounting block, the second mounting block is fixedly installed to the motor box, the other end of the second clamping plate is connected to the second connecting block on both sides, the second connecting block is slidably installed inside the second slide groove, and a fourth buffer spring is also connected between the second slide groove and the second connecting block.

[0012] As a further solution of the present invention, the protective plate is in a 'J' shape, and two protective plates are arranged one in front and one behind to protect the front and rear sides of the motor box.

[0013] As a further solution of the present invention, two cooling fans are installed at the upper end of the motor box, and the cooling fans dissipate heat from the motor inside the motor box.

[0014] As a further solution of the present invention, a damping spring is fixedly installed between the fixing plate and the motor box.

[0015] The motor suspension device for new energy vehicles provided by the present invention has the following beneficial effects:

[0016] 1. By securely encapsulating the drive motor within the motor case and flexibly connecting the motor case to the transverse suspension using symmetrically arranged first and second buffer mechanisms, the primary vibration transmission path is formed. When the vehicle travels on vibrating roads or performs operations such as acceleration, deceleration, or steering, the unique curved connecting rod and sliding plate combination generates controllable elastic deformation and sliding displacement, efficiently absorbing and dissipating multi-directional (especially vertical and lateral) impact energy from the frame, significantly attenuating the vibration amplitude transmitted to the motor case. The buffer cylinder, a key connecting element, is directly connected in series between the first and second buffer mechanisms and the transverse suspension, actively providing damping force to secondary absorb and suppress residual vibration transmitted through the swing arm and connecting rod. This fundamentally ensures the operational stability of the motor case and its internal drive motor, and greatly reduces loosening and movement of connecting bolts (especially between the motor and the suspension bracket) caused by long-term vibration or severe impact. This significantly enhances the reliability of the connection between the drive system and the frame, ensuring continuous, efficient, and stable operation of the motor.

[0017] 2. The impact protection mechanism is symmetrically arranged on both sides of the motor case. Its unique "J"-shaped protective plates semi-enclose the front, rear and bottom sides of the motor case, one in front and one in back, forming a physical barrier. The connecting parts provide a stable hinge, while the first and second air springs respectively connect the upper and lower ends of the protective plates to the motor case. This design gives the protective plates adaptive adjustment capabilities: when encountering impacts from above (such as flying stones) or below (such as road bumps), the protective plates can produce a non-rigid (elastic) flip displacement (upward or downward) around the hinge point. The compression deformation of the air springs effectively cushions the impact force, preventing damage to the protective plates or motor case caused by hard collisions. It provides active protection for the motor case and internal motor against flying dust, gravel, and broken stones during vehicle driving, as well as accidental collisions, effectively reducing the risk of physical damage to the motor caused by external environmental factors.

[0018] 3. Dual cooling fans integrated into the upper portion of the motor enclosure actively drive airflow, continuously providing forced cooling to the drive motor enclosed within the enclosure. Combined with the large, hollowed-out structure in the middle of the motor enclosure, this creates an efficient cooling duct (air enters and exits from the cooling fans, circulating through the hollowed-out area). This "active fan + passive ventilation" design significantly improves the motor's cooling efficiency, effectively controlling its operating temperature, preventing overheating, extending its lifespan, and ensuring its performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a motor suspension device for a new energy vehicle provided in this application;

[0021] Figure 2 A bottom view of the structure of a motor suspension device for a new energy vehicle provided in this application;

[0022] Figure 3 A schematic diagram of the motor box structure of a motor suspension device for a new energy vehicle provided in this application;

[0023] Figure 4 A schematic diagram of a transverse suspension structure of a motor suspension device for a new energy vehicle provided in this application;

[0024] Figure 5 A schematic diagram of the anti-impact mechanism structure of a motor suspension device for a new energy vehicle provided in this application;

[0025] Figure 6 This is a schematic structural diagram of a first buffer mechanism of a motor suspension device for a new energy vehicle provided in this application;

[0026] Figure 7 This is a schematic structural diagram of a second buffer mechanism of a motor suspension device for a new energy vehicle provided in this application.

[0027] In the figure: 1. first buffer mechanism; 11. first swing arm; 12. first connecting rod; 13. first slide; 14. first splint; 15. first connecting block; 16. first buffer spring; 17. second buffer spring; 18. first mounting block; 2. motor box; 21. cover plate; 22. box body; 3. transverse suspension; 31. spring bracket; 32. fixing plate; 33. connecting plate; 34. damping spring; 35. screw; 4. anti-impact mechanism; 41. protective plate; 42. connecting piece; 43. first air spring; 44. second air spring; 5. cooling fan; 6. second buffer mechanism; 61. second swing arm; 62. second connecting rod; 63. second slide; 64. second splint; 65. second connecting block; 66. third buffer spring; 67. fourth buffer spring; 68. second mounting block; 7. buffer cylinder. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] like Figure 1-Figure 7 As shown, this embodiment proposes a motor suspension device for new energy vehicles, including a motor box 2, with a first buffer mechanism 1 and a second buffer mechanism 6 connected to both sides of the motor box 2 respectively, the upper ends of the first buffer mechanism 1 and the second buffer mechanism 6 are connected to a transverse suspension 3, and a plurality of buffer cylinders 7 are connected to both sides of the middle of the transverse suspension 3, and the buffer cylinders 7 connect the first buffer mechanism 1 and the transverse suspension 3, and the second buffer mechanism 6 and the transverse suspension 3. Anti-impact mechanisms 4 are provided on the outer sides of the first buffer mechanism 1 and the second buffer mechanism 6, the middle part of the anti-impact mechanism 4 is hinged to the motor box 2, and the automobile motor is installed inside the motor box 2.

[0030] The first buffer mechanism 1 includes a first swing arm 11, the upper end of the first swing arm 11 is connected to the buffer cylinder 7 and the connecting plate 33, the bottom end of the first swing arm 11 is connected to the arc-shaped first connecting rod 12, the middle of the first connecting rod 12 is provided with a first slide groove 13, the middle part of the first connecting rod 12 is clamped and installed with a first clamping plate 14, the other end of the first clamping plate 14 is connected to the middle of the motor box 2 with a first buffer spring 16, one end of the first clamping plate 14 is installed with a first mounting block 18, the first mounting block 18 is fixedly installed with the motor box 2, the other end of the first clamping plate 14 is connected to the first connecting block 15 on both sides, the first connecting block 15 is slidably installed inside the first slide groove 13, and a second buffer spring 17 is also connected between the first slide groove 13 and the first connecting block 15.

[0031] The motor box 2 includes a hinged cover 21 and a box body 22. The middle of the box body 22 is hollowed out. The motor box 2 wraps and fixes the motor, providing stable support for the motor while facilitating heat dissipation of the motor and avoiding damage to the motor.

[0032] The transverse suspension 3 includes a spring bracket 31, and a fixing plate 32 and two connecting plates 33 are fixedly installed at the bottom of the spring bracket 31. The fixing plate 32 is centrally installed at the bottom of the spring bracket 31, and the two connecting plates 33 are symmetrically installed on both sides of the fixing plate 32. A screw 35 is fixedly installed in the middle of the connecting plate 33, and the screw 35 is threadedly connected to the spring bracket 31. The transverse suspension 3 is fixedly connected to the drive bridge frame. The spring bracket 31 is connected to the fixing plate 32 and the connecting plate 33 by bolts. The buffer cylinder 7 is pulled by the fixing plate 32, and the connecting plate 33 is hinged to the first buffer mechanism 1 or the second buffer mechanism 6, which facilitates the ups and downs deformation of the first buffer mechanism 1 and the second buffer mechanism 6, and buffers the vibration of the motor through the swing of the buffer cylinder 7 and the first buffer mechanism 1 and the second buffer mechanism 6.

[0033] The anti-impact mechanism 4 includes a protective plate 41, a connecting piece 42 is connected in the middle of the protective plate 41, the connecting piece 42 is fixedly welded to the motor box 2, the upper end of the protective plate 41 is connected to the motor box 2 with a first air spring 43, and the bottom end of the protective plate 41 is connected to the motor box 2 with a second air spring 44, which has adaptive adjustment capability: when encountering an impact from above such as flying stones or below such as a bump on the road, the protective plate 41 can generate a non-rigid elastic flipping displacement upward or downward around the hinge point, and effectively buffer the impact force through the compression deformation of the air spring, avoiding damage to the protective plate 41 or the motor box 2 caused by hard collision, and effectively preventing damage to the motor by dust, stones, etc. when the vehicle is running.

[0034] The second buffer mechanism 6 includes a second swing arm 61, the upper end of the second swing arm 61 is connected to the buffer cylinder 7 and the connecting plate 33, the bottom end of the second swing arm 61 is connected to the arc-shaped second connecting rod 62, the middle of the second connecting rod 62 is provided with a second slide groove 63, the middle part of the second connecting rod 62 is clamped and installed with a second clamping plate 64, the other end of the second clamping plate 64 is connected to the middle of the motor box 2 with a third buffer spring 66, one end of the second clamping plate 64 is installed with a second mounting block 68, the second mounting block 68 is fixedly installed with the motor box 2, the other end of the second clamping plate 64 is connected to the second connecting block 65 on both sides, the second connecting block 65 is slidably installed in the second slide groove 63, and the middle of the second slide groove 63 and the second connecting block 65 is also connected with a fourth Buffer spring 67, the second buffer mechanism 6 is connected to one side of the motor box 2, and one end of the second clamping plate 64 is fixedly connected to the motor box 2 through the second mounting block 68, and the other end of the second clamping plate 64 is slidably connected to the second connecting rod 62. When the motor box 2 jumps up and down, the second connecting rod 62 is deformed along the second clamping plate 64, or a V-shaped angle is formed between the second clamping plate 64 and the second connecting rod 62, which is used to flexibly connect the motor box 2 to avoid hard collision when the motor box 2 is connected, protecting the motor box 2 and the internal motor equipment. At the same time, the second swing arm 61 is clamped on the side of the motor box 2, supporting the motor box 2 upward, and the upper end of the motor box 2 is pressed by the damping spring 34, so that the motor box 2 can be stably installed and used.

[0035] The protective plate 41 is in the shape of a 'J'. The two protective plates 41 are placed one in front and one behind to protect the front and rear sides of the motor box 2. The protective plates 41 half surround the side and bottom of the motor box 2. When the upper side of the protective plate 41 is hit, the protective plate 41 folds upward. Similarly, when the lower side of the protective plate 41 is hit, the protective plate 41 flips downward to provide protection for the motor box 2, effectively preventing dust, stones, etc. from damaging the motor when the vehicle is running.

[0036] Two cooling fans 5 are installed at the upper end of the motor box 2. The cooling fans 5 dissipate heat from the motor inside the motor box 2. The cooling fans 5 cool the heat on the motor box 2 and the motor by air cooling. A damping spring 34 is fixedly installed between the fixing plate 32 and the motor box 2. The damping spring 34 acts directly between the top of the motor box 2 and the fixing plate 32 of the transverse suspension 3 to provide preload and additional vertical damping, effectively restraining excessive vibration of the motor box 2, and pressing the cover plate 21 and the box body 22 to prevent the bolts connecting the cover plate 21 and the box body 22 from self-loosening during vibration.

[0037] Specifically, when the motor suspension device for new energy vehicles is in use, the motor is fixed inside the motor box 2 and connected to both sides of the transverse suspension 3 through the first buffer mechanism 1 and the second buffer mechanism 6. The first buffer mechanism 1 and the second buffer mechanism 6 can offset the impact caused by the vibration of the vehicle body by tensioning and deforming under vibrating road conditions. At the same time, the buffer cylinder 7 performs vibration absorption treatment on the connection between the first buffer mechanism 1 and the second buffer mechanism 6 to ensure the stability of the motor box 2 and the internal motor, and prevent the loosening of the connection between the automobile motor fixing bolts and the suspension bracket due to vibration. This strengthens the connection between the motor and the frame and ensures the normal driving operation of the motor. In addition, by symmetrically installing anti-impact mechanisms 4 on both sides of the motor box 2, the anti-impact mechanisms 4 can provide protective shielding for the front and rear sides of the motor box 2, effectively preventing dust, stones, etc. from damaging the motor during vehicle operation. Finally, a cooling fan 5 is installed at the upper end of the motor box 2 to realize the heat dissipation function of the motor, and the hollow structure at the bottom of the motor box 2 further promotes the heat dissipation efficiency of the motor. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0038] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A motor suspension device for a new energy vehicle, comprising a motor box (2), characterized in that: The motor box (2) is connected to a first buffer mechanism (1) and a second buffer mechanism (6) on both sides, respectively. The upper ends of the first buffer mechanism (1) and the second buffer mechanism (6) are connected to a transverse suspension (3). The middle of the transverse suspension (3) is connected to a plurality of buffer cylinders (7) on both sides. The buffer cylinders (7) connect the first buffer mechanism (1) and the transverse suspension (3), and the second buffer mechanism (6) and the transverse suspension (3). The outer sides of the first buffer mechanism (1) and the second buffer mechanism (6) are both provided with an anti-impact mechanism (4). The middle part of the anti-impact mechanism (4) is hinged to the motor box (2), and the automobile motor is installed inside the motor box (2).

2. The motor suspension device for a new energy vehicle according to claim 1, characterized in that: The first buffer mechanism (1) includes a first swing arm (11), the upper end of the first swing arm (11) is connected to the buffer cylinder (7) and the connecting plate (33), the bottom end of the first swing arm (11) is connected to the arc-shaped first connecting rod (12), the middle of the first connecting rod (12) is provided with a first slide groove (13), the middle part of the first connecting rod (12) is clamped and installed with a first clamping plate (14), one end of the first clamping plate (14) is installed with a first mounting block (18), the other end of the first clamping plate (14) is connected to the middle of the motor box (2) with a first buffer spring (16), the first mounting block (18) is fixedly installed with the motor box (2), the other end of the first clamping plate (14) is connected to the first connecting block (15) on both sides, the first connecting block (15) is slidably installed in the first slide groove (13), and the middle of the first slide groove (13) and the first connecting block (15) is also connected with a second buffer spring (17).

3. The motor suspension device for a new energy vehicle according to claim 1, characterized in that: The motor box (2) comprises a hinged cover plate (21) and a box body (22), and a hollow portion is provided in the middle of the box body (22).

4. The motor suspension device for a new energy vehicle according to claim 1, characterized in that: The transverse suspension (3) includes a spring bracket (31), a fixing plate (32) and two connecting plates (33) are fixedly installed at the bottom of the spring bracket (31), the fixing plate (32) is centrally installed at the bottom of the spring bracket (31), and the two connecting plates (33) are symmetrically installed on both sides of the fixing plate (32), and a screw (35) is fixedly installed in the middle of the connecting plate (33), and the screw (35) is threadedly connected to the spring bracket (31).

5. The motor suspension device for a new energy vehicle according to claim 1, characterized in that: The anti-impact mechanism (4) comprises a protective plate (41), a connecting member (42) is connected in the middle of the protective plate (41), the connecting member (42) is fixedly welded to the motor box (2), the upper end of the protective plate (41) is connected to the motor box (2) by a first air spring (43), and the bottom end of the protective plate (41) is connected to the motor box (2) by a second air spring (44).

6. The motor suspension device for a new energy vehicle according to claim 1, characterized in that: The second buffer mechanism (6) includes a second swing arm (61), the upper end of the second swing arm (61) is connected to the buffer cylinder (7) and the connecting plate (33), the bottom end of the second swing arm (61) is connected to an arc-shaped second connecting rod (62), a second slide groove (63) is provided in the middle of the second connecting rod (62), a second clamping plate (64) is clamped and installed in the middle of the second connecting rod (62), the other end of the second clamping plate (64) is connected to the middle of the motor box (2) with a third buffer spring (66), one end of the second clamping plate (64) is installed with a second mounting block (68), the second mounting block (68) is fixedly installed with the motor box (2), the other end of the second clamping plate (64) is connected to a second connecting block (65) on both sides, the second connecting block (65) is slidably installed in the second slide groove (63), and a fourth buffer spring (67) is also connected between the second slide groove (63) and the second connecting block (65).

7. The motor suspension device for a new energy vehicle according to claim 5, characterized in that: The protective plate (41) is in a 'J' shape, and two protective plates (41) are arranged one in front of the other to protect the front and rear sides of the motor box (2).

8. The motor suspension device for a new energy vehicle according to claim 1, characterized in that: Two cooling fans (5) are installed at the upper end of the motor box (2), and the cooling fans (5) dissipate heat from the motor inside the motor box (2).

9. The motor suspension device for a new energy vehicle according to claim 4, characterized in that: A damping spring (34) is fixedly installed between the fixing plate (32) and the motor box (2).

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