Motor suspension device

Abstract

The application relates to a motor suspension device and belongs to the technical field of automobile parts. The motor suspension device comprises a first support, a second support and a soft cushion mechanism. The first support comprises a first docking part for docking with a motor and a first connecting part connected with the first docking part. The second support comprises a second docking part for docking with a vehicle body, a second connecting part and a main body part connecting the second docking part and the second connecting part. The second docking part and the second connecting part are vertically arranged at two ends of the main body part. The soft cushion mechanism is suitable for connecting the first connecting part and the second connecting part. In the height direction, the center line of the first connecting part, the center line of the second connecting part and the center line of the soft cushion mechanism are arranged in parallel. The first support and the second support are arranged on the two sides of the soft cushion mechanism. The above mode can achieve the technical effects of compact structure, clear force flow transmission path, good support rigidity and excellent vibration isolation performance.

Description

Technical Field

[0001] This application relates to a motor mounting device, belonging to the field of vehicle component technology. Background Technology

[0002] With the rapid development of new energy vehicles, the NVH (noise, vibration, and harshness) performance of the motor, as the core power source, is of paramount importance. The motor mounting device is a key component connecting the motor and the vehicle body. Its main function is to support the weight of the motor, isolate and attenuate the transmission of vibrations generated by the motor during operation to the vehicle body, thereby improving the overall comfort and quietness of the vehicle.

[0003] Traditional motor mount structures are typically complex, exhibiting problems such as unclear force transmission paths, insufficient stiffness in certain directions, or poor vibration isolation due to unreasonable structural layout. For example, some mounts can only constrain movement in one direction, resulting in significant vibration and noise in other directions (especially when the vehicle is traveling at high speed or accelerating), affecting the mount's durability and vibration isolation performance. Furthermore, some bracket structures lack sufficient rigidity, making them prone to fatigue damage under long-term vibration loads.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0005] The purpose of this application is to provide a motor mounting device that has a compact structure, a clear force transmission path, good support rigidity, and can improve the vibration isolation performance of the vehicle when it is at high speed or accelerating.

[0006] The purpose of this application is achieved through the following technical solution: a motor suspension device, comprising: The first bracket includes a first docking part that docks with the motor and a first connecting part that connects to the first docking part; The second bracket includes a second docking portion that docks with the vehicle body, a second connecting portion, and a main body portion connecting the second docking portion and the second connecting portion, wherein the second docking portion and the second connecting portion are respectively vertically disposed at both ends of the main body portion; and A cushioning mechanism is adapted to connect the first connecting portion and the second connecting portion; in the height direction, the center line of the first connecting portion, the center line of the second connecting portion and the center line of the cushioning mechanism are arranged parallel to each other; The first bracket and the second bracket are respectively disposed on both sides of the cushion mechanism.

[0007] In one embodiment, the center lines of the first connecting portion, the second connecting portion, and the cushion mechanism coincide or tend to coincide.

[0008] In one embodiment, the second docking portion has a first orthographic projection along the height direction, the second connecting portion has a second orthographic projection along the height direction, and the overlap area between the first orthographic projection and the second orthographic projection is 0.

[0009] In one embodiment, the first docking portion and the first connecting portion are arranged perpendicularly; The first bracket also includes reinforcing ribs that connect the first docking portion and the first connecting portion.

[0010] In one embodiment, the reinforcing rib is triangular, with one end of the triangular reinforcing rib connected to the first connecting portion, and the other two ends of the triangular reinforcing rib connected to the first mating portion.

[0011] In one embodiment, the first connecting portion is provided with a first connecting hole, and the second connecting portion is provided with a second connecting hole; The cushioning mechanism includes a first cushion and a second cushion that mates with the first cushion. The first cushion passes through the first connecting hole and mates with the second cushion so that the second cushion is located between the first connecting hole and the second connecting hole.

[0012] In one embodiment, the motor mounting device further includes a fixing mechanism for fixing the first pad and the second pad, the fixing mechanism including a bolt and a nut, the bolt passing through the first pad, the first connecting hole, the second pad and the second connecting hole in sequence and then threadedly connected to the nut.

[0013] In one embodiment, the fixing mechanism further includes a first pad disposed between the bolt and the first pad, and a second pad disposed between the second pad and the nut.

[0014] In one embodiment, the fixing mechanism further includes a flat washer and a spring washer disposed between the nut and the second connecting hole, the spring washer being disposed close to the nut.

[0015] In one embodiment, at least two of the first bracket and the second bracket are provided, with at least two of the first brackets integrally formed and at least two of the second brackets integrally formed.

[0016] Compared with the prior art, this application has the following beneficial effects: By providing a first bracket, a second bracket, and a soft pad mechanism, the first bracket has a first connecting part, the second bracket has a second connecting part, and the soft pad mechanism is provided through the first connecting part and connects the first connecting part and the second connecting part. The center lines of the first connecting part, the second connecting part, and the soft pad mechanism are arranged in parallel, thereby clamping and installing the motor suspension device as a whole along the height direction to constrain the vertical runout of the motor and achieve the limiting effect. At the same time, the soft pad mechanism passes through the first connecting part of the first bracket, and the first bracket and the second bracket are respectively located on both sides of the soft pad mechanism, which can constrain the movement of the motor along the connection direction of the first bracket and the second bracket, reduce the transmission of motor vibration and noise, reduce torque and stress concentration, and improve structural reliability and vibration isolation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the motor suspension device of this application.

[0018] Figure 2 This is a side view of the motor mounting device of this application.

[0019] Figure 3 This is an exploded schematic diagram of the motor suspension device of this application. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0021] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] Please see Figures 1 to 3 As shown, a preferred embodiment of the present application of a motor suspension device includes a first bracket 1, a second bracket 2, and a cushion mechanism 3.

[0024] The first bracket 1 is made of metal and includes a flat first mating portion 11 with bolt holes for fixed connection to a corresponding mounting surface of a motor (not shown). The first bracket 1 also includes a generally plate-shaped first connecting portion 12, which is perpendicularly connected to the first mating portion 11. At the junction of the first mating portion 11 and the first connecting portion 12, a triangular reinforcing rib 13 is provided. The two sides of the reinforcing rib 13 are welded to the first mating portion 11 and the first connecting portion 12 respectively, or integrally cast, greatly enhancing the structural rigidity of this critical component.

[0025] The second bracket 2 is also made of metal. It includes a second docking part 21, a second connecting part 22 for connection with the vehicle body (not shown), and a main body part 23 connecting the second docking part 21 and the second connecting part 22. The second docking part 21 and the second connecting part 22 are respectively vertically arranged at the upper and lower ends of the main body part 23, so that the second bracket 2 as a whole has a "Z" or "C" shaped structure.

[0026] Along the height direction, the first orthographic projection of the second docking portion 21 and the second orthographic projection of the second connecting portion 22 have no overlapping area. That is, in this embodiment, the second bracket 2 has a "Z" shaped structure. The purpose of this arrangement is that the force from the vehicle body cannot be directly transmitted to the top through the metal structure of the second bracket 2, but must pass through the soft pad mechanism 3, forcing all loads to be buffered by the soft pad mechanism 3, effectively attenuating vibrations from the motor and the road surface.

[0027] In this embodiment, the center lines of the first connecting portion 12 (which can be understood as the axis of the first connecting hole 121), the second connecting portion 22 (which can be understood as the axis of the second connecting hole 221), and the center line of the cushion mechanism 3 (i.e., the axis of the bolt 41) are completely coincident in the height direction. This allows the main vibrations and weight of the motor to be buffered and transmitted along a straight line through the cushion mechanism 3, resulting in a highly efficient and clear force flow path. Furthermore, this arrangement also aims to constrain the height-direction runout of the motor in the height direction, thereby achieving a limiting effect.

[0028] Furthermore, in this embodiment, the first bracket 1 and the second bracket 2 are respectively disposed on both sides of the soft pad mechanism 3, which can constrain the movement of the motor along the connection direction of the first bracket and the second bracket, reduce the transmission of motor vibration and noise, reduce torque and stress concentration, and improve structural reliability and vibration isolation efficiency. In this embodiment, the connection direction of the first bracket 1 and the second bracket 2 is the direction of motor rotation (i.e., the motor rotates from one side of the first bracket 1 to the side of the second bracket 2). Therefore, through the above arrangement, the movement of the vehicle in this direction can be constrained when the vehicle is traveling at high speed, i.e., when the motor accelerates or undergoes a sudden high burst of rotation.

[0029] The cushioning mechanism 3 is made of elastic damping material such as rubber and includes a first cushion 31 and a second cushion 32. A first connecting hole 121 is opened on the first connecting part 12, and a second connecting hole 221 is opened on the second connecting part 22. The first cushion 31 passes through the first connecting hole 121 and mates with the second cushion 32, while the second cushion 32 is sandwiched between the first connecting part 12 and the second connecting part 22.

[0030] The fixing mechanism 4 is used to fasten the entire suspension device together. It includes a bolt 41, a nut 42, a first washer 43, a second washer 44, a flat washer 45, and a spring washer 46. During assembly, the bolt 41 passes sequentially through the first washer 43, the through hole in the center of the first soft pad 31, the first connecting hole 121, the second soft pad 32, the second connecting hole 221, the second washer 44, the flat washer 45, and the spring washer 46, and is finally tightened with the nut 42. The first washer 43 and the second washer 44 protect the soft pad from damage by metal parts, while the flat washer 45 and the spring washer 46 effectively prevent the nut 42 from loosening under vibration, extending its service life.

[0031] As can be seen from the above, the connection method of the first bracket and the second bracket in this embodiment is actually as follows: a first soft pad 31 is provided between the first connecting part 12 of the first bracket 1 and the bolt 41, and a second soft pad 32 is provided between the first connecting part 12 of the first bracket 1 and the second connecting part 22 of the second bracket 2. This arrangement can greatly eliminate the vibration generated by the motor operation and reduce the noise during the motor operation.

[0032] Furthermore, in this embodiment, at least two first brackets 1 and two second brackets 2 are provided. Specifically, at least two first brackets 1 and at least two second brackets 2 are integrally formed, thereby strengthening the connection between the motor and the vehicle body while further mitigating vibration transmission and reducing noise. Moreover, the multiple integrally formed first brackets 1 and second brackets 2 provide higher strength, facilitate assembly, and ensure the relative positional accuracy between multiple mounting points.

[0033] In summary: By configuring a first bracket 1, a second bracket 2, and a soft pad mechanism 3, the first bracket 1 has a first connecting part 12, the second bracket 2 has a second connecting part 22, and the soft pad mechanism 3 connects the first connecting part 12 and the second connecting part 22. The center lines of the first connecting part 12, the second connecting part 22, and the soft pad mechanism 3 are arranged parallel to each other, thereby clamping and installing the entire motor suspension device along the height direction to constrain the vertical movement of the motor and achieve a limiting effect. At the same time, the first bracket 1 and the second bracket 2 are located on both sides of the soft pad mechanism 3, which can constrain the movement of the motor along the connection direction of the first bracket 1 and the second bracket 2, reduce the transmission of motor vibration and noise, reduce torque and stress concentration, and improve structural reliability and vibration isolation efficiency.

[0034] The above is only one specific implementation of this application, and any other improvements made based on the concept of this application shall be considered within the scope of protection of this application.

Claims

1. A motor suspension device, characterized in that, include: The first bracket includes a first docking part that docks with the motor and a first connecting part that connects to the first docking part; The second bracket includes a second docking portion that docks with the vehicle body, a second connecting portion, and a main body portion connecting the second docking portion and the second connecting portion, wherein the second docking portion and the second connecting portion are respectively vertically disposed at both ends of the main body portion; and A cushioning mechanism is adapted to connect the first connecting portion and the second connecting portion; in the height direction, the center line of the first connecting portion, the center line of the second connecting portion and the center line of the cushioning mechanism are arranged parallel to each other; The first bracket and the second bracket are respectively disposed on both sides of the cushion mechanism.

2. The motor mounting device as described in claim 1, characterized in that, The center lines of the first connecting part, the second connecting part, and the cushion mechanism coincide or tend to coincide.

3. The motor suspension device as described in claim 1, characterized in that, The second docking portion has a first orthographic projection along the height direction, and the second connecting portion has a second orthographic projection along the height direction. The overlap area between the first orthographic projection and the second orthographic projection is 0.

4. The motor suspension device as described in claim 1, characterized in that, The first docking portion and the first connecting portion are arranged perpendicularly; The first bracket also includes reinforcing ribs that connect the first docking portion and the first connecting portion.

5. The motor mounting device as described in claim 4, characterized in that, The reinforcing rib is triangular in shape, with one end of the triangular reinforcing rib connected to the first connecting portion and the other two ends of the triangular reinforcing rib connected to the first mating portion.

6. The motor mounting device as described in any one of claims 1 to 5, characterized in that, The first connecting part is provided with a first connecting hole, and the second connecting part is provided with a second connecting hole; The cushioning mechanism includes a first cushion and a second cushion that mates with the first cushion. The first cushion passes through the first connecting hole and mates with the second cushion so that the second cushion is located between the first connecting hole and the second connecting hole.

7. The motor mounting device as described in claim 6, characterized in that, The motor mounting device further includes a fixing mechanism for fixing the first soft pad and the second soft pad. The fixing mechanism includes a bolt and a nut. The bolt passes through the first soft pad, the first connecting hole, the second soft pad and the second connecting hole in sequence and is then threadedly connected to the nut.

8. The motor mounting device as described in claim 7, characterized in that, The fixing mechanism further includes a first pad disposed between the bolt and the first pad, and a second pad disposed between the second pad and the nut.

9. The motor mounting device as described in claim 6, characterized in that, The fixing mechanism also includes a flat washer and a spring washer disposed between the nut and the second connecting hole, with the spring washer positioned close to the nut.

10. The motor mounting device as described in any one of claims 1 to 5, characterized in that, There are at least two of the first bracket and the second bracket, with at least two of the first brackets integrally formed and at least two of the second brackets integrally formed.

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