Motor suspension structure

Abstract

The utility model relates to the technical field of motor suspension, in particular to a motor suspension structure which comprises a suspension framework (1). A bracket connecting structure is arranged on the suspension framework (1); a buffer structure is arranged in the bracket connecting structure, and the bracket connecting structure is connected with a wire harness bracket; the suspension framework (1) is respectively connected with an auxiliary frame and a motor; the support connecting structure can provide an installation position for the wire harness support and can achieve stable connection between the wire harness support and the suspension framework. The buffering structure can provide effective buffering for the wire harness support. Compared with the existing motor suspension performance, the vibration transmitted by the high-voltage wiring harness or the water pipe can be attenuated for the first time through the press-fitting rubber bushing and then transmitted to the motor suspension main spring for secondary attenuation, and the suspension NVH performance of the whole vehicle is better.

Description

Technical Field

[0001] This utility model relates to the field of motor mounting technology, and more specifically, to a motor mounting structure. Background Technology

[0002] In recent years, my country has strongly supported electric vehicles, and their market share has increased year by year. At the same time, consumers' performance requirements for electric vehicles are rising, especially in terms of ride comfort. Compared with traditional engines, electric motors usually have many high-voltage wiring harnesses or pipes. Due to space constraints, these high-voltage wiring harnesses or pipes require motor mounts to provide mounting points for their brackets. Since these high-voltage wiring harnesses or pipes are heavier than those in traditional fuel vehicles, increasing the number of mounting points has a significant impact on the performance of the mounts. In addition, the existing direct rigid connection between the bracket and the motor mount makes it difficult to meet NVH performance (noise, vibration, and harshness) standards, resulting in a poor user experience.

[0003] The applicant discovered through a search that Chinese patent document with publication number 216231641U, published on April 8, 2022, discloses a motor mount assembly and a motor mount structure for a mining vehicle. The motor mount structure for the mining vehicle includes: a frame, on which the motor mount assembly is mounted; a mounting seat is provided on the frame, and the mounting seat is bolted to the motor mount assembly; the motor assembly includes: two mount brackets, which are divided into a left mount bracket and a right mount bracket, which are arranged alternately facing each other, and each mount bracket is detachably assembled to the motor; a reinforcing plate, which is connected to the two mount brackets respectively; the reinforcing plate is detachably assembled to at least one of the two mount brackets; this device also cannot solve the above-mentioned technical problem.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing motor mounting structure. Utility Model Content

[0005] The purpose of this invention is to provide a motor mounting structure that can provide an installation position for the wire harness bracket and improve NVH performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a motor mounting structure, including a mounting frame; a bracket connection structure is provided on the mounting frame; a buffer structure is provided in the bracket connection structure, and a wire harness bracket is connected thereto; the mounting frame is respectively connected to a subframe and a motor.

[0007] The bracket connection structure includes a connecting sleeve; the connecting sleeve is disposed at the top of the suspension frame; the buffer structure is disposed in the connecting sleeve; the wire harness bracket is provided with a connecting rod; the connecting rod extends into the connecting sleeve and is connected to the suspension frame.

[0008] The buffer structure includes a bushing; the bushing is disposed in the connecting sleeve; the connecting rod is sleeved in the bushing.

[0009] The bushing includes an inner tube and an outer tube; a rubber layer is provided between the inner tube and the outer tube; the inner tube is sleeved on the connecting rod; the outer tube abuts against the inner wall of the connecting sleeve.

[0010] The suspension frame is provided with a threaded hole; the threaded hole is located at the top of the suspension frame and communicates with the inner tube; the end of the connecting rod is provided with an external thread, and the threaded hole is provided with an internal thread that mates with the external thread.

[0011] The suspension frame is provided with mounting holes; a main suspension spring is provided in the mounting holes; the main suspension spring is connected to the subframe.

[0012] The main suspension spring is provided with a first bolt hole; a first bolt is provided in the first bolt hole; the first bolt is connected to the subframe.

[0013] The suspension frame is provided with a second bolt hole; a second bolt is provided in the second bolt hole, and the second bolt is connected to the motor.

[0014] The suspension frame includes a larger end and a smaller end; the larger end is provided with the mounting hole and the connecting sleeve respectively; a plurality of second bolt holes are provided on the smaller end.

[0015] The rubber layer is vulcanized rubber.

[0016] The beneficial effects of this application are as follows:

[0017] 1. This application provides a connecting sleeve at the top of the suspension frame and a threaded hole at the top of the suspension frame; the threaded hole communicates with the connecting sleeve; the connecting rod of the wire harness bracket extends into the connecting sleeve and is then threaded onto the suspension frame; compared with the existing motor suspension connection method where the internal thread is located in the connecting sleeve, the threaded hole of this application is directly located on the suspension frame, resulting in higher connection reliability.

[0018] 2. This application includes a bushing in the connecting sleeve; the bushing has a 3-layer rubber structure, which can provide effective buffering for the connecting rod of the wiring harness bracket; compared with the existing motor mounting performance, the vibration transmitted by the high-voltage wiring harness or water pipe in this application will be attenuated for the first time by the press-fitted rubber bushing, and then transmitted to the motor mounting main spring for secondary attenuation, resulting in better NVH performance of the vehicle mounting. Attached Figure Description

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the motor's suspension structure.

[0021] Figure 2 This is a schematic diagram of the suspension frame of the motor suspension structure.

[0022] Figure 3 This is a schematic diagram of the bushing structure of the motor suspension.

[0023] The markings in the above figures are all:

[0024] The diagram is marked as follows:

[0025] 1. Suspension frame; 101. Threaded hole; 102. Mounting hole; 103. Second bolt hole.

[0026] 2. Connect the sleeve.

[0027] 3. Bushing, 301. Inner tube, 302. Outer tube, 303. Rubber layer.

[0028] 4. Suspension spring, 401, First bolt hole,

[0029] 5. Larger end, 501. Smaller end. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation.

[0031] Figure 1 The motor mounting structure shown includes a mounting frame 1; a bracket connection structure is provided on the mounting frame 1; a buffer structure is provided in the bracket connection structure, and a wire harness bracket is connected thereto; the mounting frame 1 is connected to the subframe and the motor respectively.

[0032] The bracket connection structure provides an installation position for the wiring harness bracket and enables a stable connection between the wiring harness bracket and the suspension frame 1; the buffer structure provides effective buffering for the wiring harness bracket; compared with the existing motor suspension performance, the vibration transmitted by the high-voltage wiring harness or water pipe in this application will be attenuated for the first time by the press-fit rubber bushing 3, and then transmitted to the motor suspension main spring 4 for secondary attenuation, resulting in better suspension NVH performance of the whole vehicle.

[0033] The bracket connection structure includes a connecting sleeve 2; the connecting sleeve 2 is located at the top of the suspension frame 1; a buffer structure is located in the connecting sleeve 2; the wire harness bracket is provided with a connecting rod; the connecting rod extends into the connecting sleeve 2 and is connected to the suspension frame 1.

[0034] The connecting sleeve 2 is a round tube structure and is fixedly connected to the top of the suspension frame 1; the buffer structure is fixedly connected to the connecting sleeve 2; the high-voltage wiring harness or water pipe inside the vehicle is fixed to the wiring harness bracket; the connecting rod is fixedly connected to the wiring harness bracket; the end of the connecting rod extends into the connecting sleeve 2 and is fixedly connected to the suspension frame 1.

[0035] The buffer structure includes a bushing 3; the bushing 3 is located in the connecting sleeve 2; and the connecting rod is sleeved in the bushing 3.

[0036] Bushing 3 is a rubber bushing with a round tube structure; bushing 3 is press-fitted into connecting sleeve 2, thereby achieving a fixed connection between bushing 3 and connecting sleeve 2; connecting rod passes through bushing 3 and is connected to suspension frame 1; vibration transmitted by high-voltage wiring harness or water pipe will be attenuated for the first time by press-fitted rubber bushing 3, and then transmitted to motor suspension main spring 4 for secondary attenuation, resulting in better suspension NVH performance of the whole vehicle.

[0037] The bushing 3 includes an inner tube 301 and an outer tube 302; a rubber layer 303 is provided between the inner tube 301 and the outer tube 302; the inner tube 301 is sleeved on the connecting rod; the outer tube 302 is pressed against the inner wall of the connecting sleeve 2.

[0038] Both the outer tube 302 and the inner tube 301 are circular tube structures; the outer tube 302 is tightly abutted against the connecting sleeve 2; the connecting rod is sleeved in the inner tube 301. When the high-voltage wiring harness or water pipe vibrates, the vibration is transmitted to the inner tube 301 through the connecting rod. The rubber layer 303 can absorb and buffer the vibration, thereby improving the overall vehicle's suspension NVH performance.

[0039] The suspension frame 1 is provided with a threaded hole 101; the threaded hole 101 is located at the top of the suspension frame 1 and communicates with the inner tube 301; the end of the connecting rod is provided with an external thread, and the threaded hole 101 is provided with an internal thread that mates with the external thread.

[0040] By using the combination of external and internal threads, a stable connection between the connecting rod and the suspension frame 1 can be achieved; the connection between the two is stable and firm, and easy to install and disassemble; compared with the existing motor suspension which sets the internal thread in the connecting sleeve 2, the threaded hole 101 of this application is directly set on the suspension frame 1, resulting in higher connection reliability.

[0041] The suspension frame 1 is provided with mounting holes 102; the mounting holes 102 are provided with suspension main springs 4; the suspension main springs 4 are connected to the subframe.

[0042] Mounting hole 102 is a round hole; mounting hole 102 is located on the side of the suspension frame 1; the main suspension spring 4 is fixedly connected in the mounting hole 102; the main suspension spring 4 isolates and absorbs the vibration of the motor through its dynamic stiffness characteristics, which can effectively improve the NVH performance and durability of the whole vehicle.

[0043] The main suspension spring 4 is provided with a first bolt hole 401; a first bolt is provided in the first bolt hole 401; the first bolt is connected to the subframe.

[0044] The first bolt hole 401 is located in the middle of the main suspension spring 4; a first bolt is connected in the first bolt hole 401; a connecting hole is provided on the subframe; the end of the first bolt is connected in the connecting hole, thereby realizing the connection between the suspension frame 1 and the subframe.

[0045] The suspension frame 1 is provided with a second bolt hole 103; a second bolt is provided in the second bolt hole 103, and the second bolt is connected to the motor.

[0046] The suspension frame 1 has three second bolt holes 103 on its side; a second bolt is installed in the second bolt hole 103; the motor has a bolt mounting hole; the end of the second bolt is connected to the bolt mounting hole, so that the suspension frame 1 and the motor can be fixedly connected.

[0047] The suspension frame 1 includes a larger end 5 and a smaller end 501; the larger end 5 is provided with a mounting hole 102 and a connecting sleeve 2; a plurality of second bolt holes 103 are provided on the smaller end 501.

[0048] Mounting hole 102 is provided on the side of the larger end 5; connecting sleeve 2 is provided on the top of the larger end 5; three second bolt holes 103 are distributed on the side of the smaller end 501.

[0049] The rubber layer 303 is vulcanized rubber.

[0050] The inner tube 301 and the outer tube 302 are placed in a vulcanization mold, and vulcanized rubber is injected to obtain a rubber layer 303. Due to the elasticity of the material itself, the vulcanized rubber layer 303 can effectively isolate and absorb the energy generated by external impact or vibration sources, reducing the impact of vibration and impact on equipment or structure. It can improve the vehicle's noise, vibration and harshness performance, i.e., NVH performance, and enhance the user experience.

[0051] The specific workflow of this utility model is as follows:

[0052] The bushing 3 is press-fitted into the connecting sleeve 2; the main suspension spring 4 is press-fitted into the mounting hole 102 of the suspension frame 1; the connecting rod of the wiring harness bracket is inserted into the bushing 3 and connected to the threaded hole 101 on the suspension frame 1; the suspension frame 1 is connected to the subframe by the first bolt; the suspension frame 1 is connected to the motor by the second bolt.

[0053] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A motor suspension structure, characterized in that: It includes a suspension frame (1); the suspension frame (1) is provided with a bracket connection structure; the bracket connection structure is provided with a buffer structure and connected with a wire harness bracket; the suspension frame (1) is respectively connected to a subframe and a motor.

2. The motor suspension structure according to claim 1, characterized in that: The bracket connection structure includes a connecting sleeve (2); the connecting sleeve (2) is located at the top of the suspension frame (1); the buffer structure is located in the connecting sleeve (2); the wire harness bracket is provided with a connecting rod; the connecting rod extends into the connecting sleeve (2) and is connected to the suspension frame (1).

3. A motor suspension structure according to claim 2, characterized in that: The buffer structure includes a bushing (3); the bushing (3) is disposed in the connecting sleeve (2); the connecting rod is sleeved in the bushing (3).

4. A motor suspension structure according to claim 3, characterized in that: The bushing (3) includes an inner tube (301) and an outer tube (302); a rubber layer (303) is provided between the inner tube (301) and the outer tube (302); the inner tube (301) is sleeved on the connecting rod; the outer tube (302) abuts against the inner wall of the connecting sleeve (2).

5. A motor suspension structure according to claim 4, characterized in that: The suspension frame (1) is provided with a threaded hole (101); the threaded hole (101) is located at the top of the suspension frame (1) and communicates with the inner tube (301); the end of the connecting rod is provided with an external thread, and the threaded hole (101) is provided with an internal thread that mates with the external thread.

6. A motor suspension structure according to any one of claims 4-5, characterized in that: The suspension frame (1) is provided with mounting holes (102); a main suspension spring (4) is provided in the mounting holes (102); the main suspension spring (4) is connected to the subframe.

7. A motor suspension structure according to claim 6, characterized in that: The main suspension spring (4) is provided with a first bolt hole (401); a first bolt is provided in the first bolt hole (401); the first bolt is connected to the subframe.

8. A motor suspension structure according to claim 7, characterized in that: The suspension frame (1) is provided with a second bolt hole (103); a second bolt is provided in the second bolt hole (103), and the second bolt is connected to the motor.

9. A motor suspension structure according to claim 8, characterized in that: The suspension frame (1) includes a larger end (5) and a smaller end (501); the larger end (5) is provided with the mounting hole (102) and the connecting sleeve (2); a plurality of second bolt holes (103) are provided on the smaller end (501).

10. A motor suspension structure according to any one of claims 7-9, characterized in that: The rubber layer (303) is vulcanized rubber.

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