A vehicle powertrain suspension

Abstract

The application discloses a vehicle power assembly suspension, which comprises a suspension support, a suspension main spring and a suspension supporting arm. The suspension support has a through cavity. The suspension main spring is in interference fit in the cavity and has a through mounting cavity and a first limiting opening communicating with the mounting cavity. The suspension supporting arm comprises a connecting part which is in interference fit in the mounting cavity. The connecting part has a first reverse buckle with an inclined angle. When the connecting part is in interference fit in the mounting cavity, the first reverse buckle is engaged in the first limiting opening. After the connecting part of the suspension supporting arm is connected with the mounting cavity of the suspension main spring, the first reverse buckle can be engaged on the suspension main spring. When the suspension main spring is in interference fit with the suspension support, the second reverse buckle of the suspension main spring is engaged with the suspension support, so that the connection stability among the suspension support, the suspension main spring and the suspension supporting arm is improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle power unit mounting structures, and in particular to a vehicle powertrain mounting. Background Technology

[0002] For a vehicle, the powertrain generally includes the engine, clutch, transmission and their accessories. The powertrain mount is an elastic system that connects the powertrain to the chassis / frame. Its main functions are to support the powertrain and limit the engine's output torque and dynamic load, while isolating the vibrations transmitted from the engine to the vehicle body and damping the transmission of road vibrations, thereby improving the overall NVH (Noise, Vibration, Harshness) performance of the vehicle and enhancing the overall ride comfort.

[0003] Existing suspension structures, such as the "Powertrain Suspension" disclosed in the utility model patent with authorization announcement number CN213167702U, include upper and lower housings, a rubber main spring, and a suspension bracket. The upper and lower housings are generally connected to the chassis / frame, and the suspension bracket is connected to the powertrain. It converts the vibration energy generated by the powertrain during operation through the elastic deformation of the rubber main spring.

[0004] During the assembly process, the rubber main spring is integrally formed with the internal skeleton using a vulcanization process. The suspension arm and the rubber main spring are fitted with an interference fit, and the rubber main spring is also fitted with the upper and lower shells. However, after the rubber main spring and the suspension arm are squeezed together for a long time, a certain amount of movement gap will inevitably be generated, which poses a safety hazard of separation between the two and results in poor connection stability. Utility Model Content

[0005] To improve the overall connection stability after assembly, this application provides a vehicle powertrain mounting.

[0006] The technical solution for a vehicle powertrain mounting provided in this application is as follows: A vehicle powertrain mounting, comprising: The suspension bracket has a continuous cavity; A suspension spring, interference-fitted into a cavity, the suspension spring having a through mounting cavity and a first limiting port communicating with the mounting cavity; and The suspension arm includes a connecting portion that is interference-fitted into the mounting cavity; The connecting part has a first buckle with an inclined angle. When the connecting part is interference-fitted into the mounting cavity, the first buckle is engaged in the first limiting opening.

[0007] Preferably, at least one inner wall of the mounting cavity is provided with a rib, which abuts against the connecting portion.

[0008] Preferably, the suspension arm includes two clamping arms extending outward from both ends on one side of the mounting cavity, and a portion of the connecting part engages between the two clamping arms.

[0009] Preferably, the suspension bracket also has a second limiting port that communicates with the cavity, and the suspension main spring has a second buckle with a certain inclination angle at the bottom; when the suspension main spring is interference-fitted in the cavity, the second buckle is engaged in the second limiting port.

[0010] Preferably, the suspension spring includes: The sleeve, wherein the mounting cavity is formed within the sleeve; and Main spring base, connected to the sleeve; The top surface of the sleeve abuts against the inner top wall of the cavity, and the bottom surface of the main spring base abuts against the inner bottom arm of the cavity.

[0011] Preferably, the suspension bracket has a guide groove on the side wall of the cavity, and the main spring base has guide blocks on both sides, which are engaged in the guide groove.

[0012] Preferably, the cavity has at least one first wedge-shaped guide surface, and the main spring base has a second wedge-shaped guide surface that abuts against the inclined guide surface.

[0013] Preferably, the main spring base further includes an anti-slip structure located on one side; the suspension bracket includes a protrusion placed in the cavity, and the anti-slip structure abuts against the end face of the protrusion.

[0014] Preferably, the sleeve includes a metal skeleton, the main spring base includes a nylon skeleton, and the metal skeleton and the nylon skeleton are connected by vulcanization.

[0015] Preferably, the suspension spring further includes at least one limiting rib extending outward from the top surface, the limiting rib abutting against the inner top wall of the cavity.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. After the connecting part of the suspension bracket is connected to the mounting cavity of the suspension main spring, the first buckle can be engaged with the suspension main spring. At the same time, when the suspension main spring is in interference fit with the suspension bracket, the second buckle of the suspension main spring is engaged with the suspension bracket, thereby improving the connection stability between the suspension bracket, the suspension main spring and the suspension bracket. 2. When the main suspension spring is connected to the suspension bracket, it uses guide grooves and wedge-shaped guide surfaces to achieve quick connection. Combined with limiting ribs and anti-slip structure, the stability of the main suspension spring after connection with the suspension bracket is further improved. Attached Figure Description

[0017] Figure 1 A schematic diagram of the vehicle powertrain mounting structure; Figure 2 An exploded view of the vehicle's powertrain mounting system; Figure 3 This diagram mainly illustrates the connection between the main suspension spring and the suspension support arm; Figure 4 This is a schematic diagram showing the connection between the main suspension spring and the suspension bracket; Figure 5 A cross-sectional view of the vehicle's powertrain mounting. Figure 6 This is an exploded view of the metal skeleton and nylon skeleton in the main suspension spring.

[0018] Explanation of reference numerals in the attached drawings: 1. Suspension bracket; 11. Cavity; 12. Guide groove; 13. First wedge-shaped surface; 14. Protrusion; 15. Second limiting port; 2. Suspension main spring; 21. Sleeve; 211. Mounting cavity; 212. First limiting port; 213. Clamping arm; 214. Protruding rib; 215. Limiting rib; 216. Metal frame; 22. Main spring base; 221. Guide block; 222. Second wedge-shaped surface; 223. Second inverted buckle; 224. Anti-slip structure; 225. Nylon frame; 3. Suspension support arm; 31. Connecting part; 32. First inverted buckle. Detailed Implementation

[0019] The present application will be further described in detail below with reference to the accompanying drawings.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Figure 1 and Figure 2The diagram illustrates a structure for a vehicle powertrain mount, including a mount bracket 1, a mount spring 2, and a mount support arm 3. To reduce weight, both the mount bracket 1 and the mount support arm 3 are made of aluminum and are integrally die-cast. The mount spring 2 is a vulcanized component with an internal skeleton, and the mount spring 2 is interlocked with the mount bracket 1 and the mount support arm 3 to form an interference fit.

[0023] Combination Figure 3 The main suspension spring 2 includes a sleeve 21 and a main spring base 22 connected to each other. The sleeve 21 has a through mounting cavity 211. The suspension support arm 3 has a connecting part 31 extending toward one side of the main suspension spring 2. The connecting part 31 is engaged in the mounting cavity 211.

[0024] To improve the connection stability between the main suspension spring 2 and the suspension support arm 3, the sleeve 21 is also provided with a first limiting port 212 on the upper end face, which connects to the mounting cavity 211; the upper end face of the connecting part 31 is provided with a first buckle 32 at a certain angle. The inclined surface of the first buckle 32 extends upward away from the main suspension spring 2, so that the inclined surface can be smoothly guided when the connecting part 31 is inserted into the mounting cavity 211. At the same time, after the connecting part 31 is inserted into the mounting cavity 211, the first buckle 32 is engaged in the first limiting port 212 to improve the connection stability between the two.

[0025] The sleeve 21 also has outwardly extending clamping arms 213 at both ends on one side of the mounting cavity 211. There is a certain distance between the two clamping arms 213. After the connecting part 31 is inserted into the mounting cavity 211, the two clamping arms 213 abut against the two sides of the connecting part 31 to improve the connection strength between the two.

[0026] Furthermore, after the connecting part 31 is inserted into the mounting cavity 211, the relative movement of the connecting part 31 within the mounting cavity 211 is further reduced by the presence of several protruding ribs 214 on the inner wall of the mounting cavity 211. In this embodiment, each of the four inner walls of the mounting cavity 211 has several protruding ribs 214.

[0027] The suspension bracket 1 has a through cavity 11 and two guide grooves 12 communicating with the cavity 11. The main spring base 22 has guide blocks 221 located on both sides, which are inserted into the guide grooves 12. At the same time, the cavity 11 also has a first wedge-shaped guide surface inclined at the bottom, and the main spring base 22 has a second wedge-shaped guide surface. When the guide blocks 221 are inserted into the guide grooves 12, the second wedge-shaped guide surface 222 abuts against the first wedge-shaped guide surface 13, and the bottom surface of the main spring base 22 abuts against the bottom wall of the cavity 11, thereby achieving an interference fit between the suspension main spring 2 and the suspension bracket 1.

[0028] The main spring base 22 also has an anti-slip structure 224 on its end face near the cavity 11. A protrusion 14 extending towards the side where the main spring 2 is suspended is provided inside the cavity 11. When the main spring 2 is engaged in the cavity 11, the anti-slip structure 224 abuts against the end face of the protrusion 14 to further reduce movement between the two. In this embodiment, the anti-slip structure 224 has a wave-shaped anti-slip texture.

[0029] Combination Figure 4 The cavity 11 also has a second limiting opening 15 on its bottom wall. The main spring base 22 has a second inverted buckle 223 with a certain tilt angle on its bottom surface. After the main spring base 22 is gradually inserted into the cavity 11, the second inverted buckle 223 engages with the second limiting opening 15, further improving the connection stability between the suspension main spring 2 and the suspension bracket 1. Similarly, the tilt direction of the second inverted buckle 223 is upward on the side away from the cavity 11, so that the second inverted buckle 223 can be smoothly introduced into the cavity 11.

[0030] See also Figure 5 and Figure 6 The sleeve 21 includes a metal skeleton 216, and the main spring base 22 includes a nylon skeleton 225. The metal skeleton 216 and the nylon skeleton 225 are connected by vulcanization. The nylon skeleton 225 is made of PA66 material, with a maximum melting point of 264 degrees Celsius, and has high temperature resistance to withstand the temperature during the vulcanization process. The bottom surface of the nylon skeleton 225 abuts against the bottom wall of the cavity 11, which reduces weight and also reduces friction and wear between the skeleton and the suspension bracket 1, thus improving service life.

[0031] The metal skeleton 216 is wrapped with rubber after vulcanization. The entire sleeve 21 has an outwardly extending limiting rib 215 at the top. After the sleeve 21 is inserted into the cavity 11, the limiting rib 215 abuts against the inner top wall of the cavity 11 to improve the connection stability between the two.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vehicle powertrain mounting, characterized in that, include: The suspension bracket (1) has a through cavity (11). A main suspension spring (2) is interference-fitted into a cavity (11). The main suspension spring (2) has a through mounting cavity (211) and a first limiting port (212) communicating with the mounting cavity (211); and The suspension arm (3) includes a connecting part (31) which is interference-fitted into the mounting cavity (211); The connecting part (31) has a first buckle (32) with an inclined angle. When the connecting part (31) is interference-fitted into the mounting cavity (211), the first buckle (32) is engaged in the first limiting port (212).

2. The vehicle powertrain mounting according to claim 1, characterized in that, At least one inner wall of the mounting cavity (211) is provided with a rib (214), which abuts against the connecting part (31).

3. A vehicle powertrain mounting according to claim 1, characterized in that, The suspension arm (3) includes two clamping arms (213) extending outward from both ends of the mounting cavity (211) side, and part of the connecting part (31) is engaged between the two clamping arms (213).

4. A vehicle powertrain mounting according to claim 1, characterized in that, The suspension bracket (1) is also provided with a second limiting port (15) that connects to the cavity (11), and the suspension main spring (2) is provided with a second buckle (223) at a certain angle at the bottom; when the suspension main spring (2) is interference-fitted in the cavity (11), the second buckle (223) is engaged in the second limiting port (15).

5. A vehicle powertrain mounting according to claim 1, characterized in that, The suspension spring (2) includes: Sleeve (21), wherein the mounting cavity (211) is formed within sleeve (21); and The main spring base (22) is connected to the sleeve (21); The top surface of the sleeve (21) abuts against the inner top wall of the cavity (11), and the bottom surface of the main spring base (22) abuts against the inner bottom arm of the cavity (11).

6. A vehicle powertrain mounting according to claim 5, characterized in that, The suspension bracket (1) has a guide groove (12) on the side wall of the cavity (11), and the main spring base (22) has guide blocks (221) on both sides, and the guide blocks (221) are engaged in the guide groove (12).

7. A vehicle powertrain mount according to claim 5 or 6, characterized in that, The cavity (11) has at least one first wedge-shaped guide surface, and the main spring base (22) has a second wedge-shaped guide surface that abuts against the inclined guide surface.

8. A vehicle powertrain mounting according to claim 5, characterized in that, The main spring base (22) also includes an anti-slip structure (224) located on one side; the suspension bracket (1) includes a protrusion (14) placed in the cavity (11), and the anti-slip structure (224) abuts against the end face of the protrusion (14).

9. A vehicle powertrain mount according to claim 5, characterized in that, The sleeve (21) includes a metal skeleton (216), and the main spring base (22) includes a nylon skeleton (225). The metal skeleton (216) and the nylon skeleton (225) are connected by vulcanization.

10. A vehicle powertrain mounting according to claim 1, characterized in that, The suspension spring (2) also includes at least one limiting rib (215) extending outward from the top surface, the limiting rib (215) abutting against the inner top wall of the cavity (11).

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