Transmission supporting beam damping device

Abstract

The invention discloses a transmission supporting beam damping device which comprises a mounting support, a damping assembly and a fixing assembly, and mounting holes are formed in the two ends of the mounting support; the vibration reduction assembly comprises a limiting ring, an upper vibration reduction soft cushion, a lower vibration reduction soft cushion, a sleeve and a supporting gasket, the limiting ring is arranged on the mounting hole, the inner wall of the bottom of the upper vibration reduction soft cushion abuts against the outer wall of the limiting ring, the lower vibration reduction soft cushion is arranged in the mounting hole, the sleeve is inserted into the mounting hole, the outer wall of the top of the sleeve abuts against the inner wall of the top of the upper vibration reduction soft cushion, and the supporting gasket is arranged in the mounting hole. The supporting gasket is arranged at the bottom of the lower damping cushion; and the fixing assembly is inserted into the sleeve. When a single vibration reduction assembly on the installation support is overturned, one contact point is changed into an upper contact point and a lower contact point, the upper limiting structure and the lower limiting structure participate in stress at the same time, the capacity of resisting overturning in the X direction and the Y direction is improved, extra loads are dispersed, the rigidity of the vibration reduction structure is reduced, and the vibration reduction effect is improved. And the vibration damping performance and the service life of the upper vibration damping cushion and the lower vibration damping cushion are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle transmissions, and more particularly to a transmission support beam vibration damping device. Background Art

[0002] In modern vehicles with longitudinally mounted powertrains, the transmission is typically mounted with a transmission mount, then bolted directly to the vehicle body via a transmission support beam. This supports the transmission in its designed position. Because the transmission mount is closer to the cab than the engine mount, vibration and noise are more easily transmitted through the transmission support beam and perceived by the user. Therefore, some models incorporate a rubber damping structure at the connection between the transmission support beam and the vehicle body after the transmission mount has been installed to further attenuate vibration and noise from the powertrain, achieving improved NVH performance.

[0003] Due to vehicle layout constraints, the transmission mount's action point is rarely located at the midpoint in the X and Y directions. When subjected to Z-direction forces, the positive and negative X and Y mounting points experience unequal Z-direction forces, resulting in unequal rubber deformation in the Z direction. This causes the transmission support beam to rotate in the X and Y directions, generating additional loads. This is more pronounced the further to one side the action point is. Furthermore, the additional X and Y-direction loads generated by Z or X-direction forces increase the stiffness of the damping structure, reducing both the system's damping performance and the life of the damping pads.

[0004] Therefore, how to provide a transmission support beam vibration reduction device has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] An object of the present invention is to provide a new technical solution for a transmission support beam vibration damping device.

[0006] According to a first aspect of the present invention, a transmission support beam vibration damping device is provided, comprising: a mounting bracket, a vibration damping assembly, and a fixing assembly, wherein both ends of the mounting bracket have mounting holes;

[0007] The vibration damping assembly includes a limiting ring, an upper vibration damping pad, a lower vibration damping pad, a sleeve and a support washer, the limiting ring is arranged on the mounting hole, the inner wall of the bottom of the upper vibration damping pad abuts against the outer wall of the limiting ring, the lower vibration damping pad is arranged inside the mounting hole, and the sleeve is inserted into the mounting hole, the outer wall of the top of the sleeve abuts against the inner wall of the top of the upper vibration damping pad, and the support washer is arranged at the bottom of the lower vibration damping pad;

[0008] The fixing assembly is inserted into the sleeve.

[0009] Optionally, the upper vibration-damping pad includes a first annular pad and a second annular pad, the thickness of the first annular pad is smaller than the thickness of the second annular pad, the first end of the bottom of the first annular pad is connected to the first end of the top of the second annular pad, and there is a V-shaped notch between the bottom of the first annular pad and the top of the second annular pad.

[0010] Optionally, the inner wall of the first annular gasket abuts against the outer wall of the sleeve, and the inner wall of the second annular gasket abuts against the outer wall of the limiting ring.

[0011] Optionally, the lower vibration-damping pad includes a vibration-damping sleeve and an annular tube, the bottom of the annular tube is connected to the top of the vibration-damping sleeve, the annular tube is located between the limiting ring and the sleeve, the vibration-damping sleeve is located inside the mounting bracket, and the support gasket is arranged at the bottom of the vibration-damping sleeve.

[0012] Optionally, a convex body is provided on the outer wall of the vibration damping sleeve.

[0013] Optionally, an annular groove is provided at the bottom of the vibration damping sleeve;

[0014] The supporting gasket includes a connecting piece and a limiting ring piece, the limiting ring piece is connected to the outer edge of the connecting piece, and the limiting ring piece is inserted into the annular groove.

[0015] Optionally, the fixing assembly includes a fastening bolt, a first connecting hole and a second connecting hole, the first connecting hole is arranged at the center position of the upper vibration-damping pad, the second connecting hole is arranged at the center position of the support gasket, the sleeve is inserted into the first connecting hole and the mounting hole, the fastening bolt passes through the second connecting hole, and the lower vibration-damping pad is inserted into the sleeve.

[0016] The beneficial effects of the present invention are:

[0017] The present invention comprises a limiting ring arranged on a mounting hole, an inner wall of the bottom of an upper vibration-damping pad abutting against an outer wall of the limiting ring, a lower vibration-damping pad arranged inside the mounting hole, a sleeve inserted into the mounting hole, an outer wall of the top of the sleeve abutting against the inner wall of the top of the upper vibration-damping pad, a support washer arranged at the bottom of the lower vibration-damping pad, and a fixing assembly inserted into the sleeve. The present invention forms an upper limit structure for the top of the lower vibration-damping pad through the sleeve and the limiting ring, and forms a lower limit structure for the bottom of the lower vibration-damping pad through the action of the support washer and the mounting bracket, and cooperates with the upper vibration-damping pad to act on the sleeve and the limiting ring, so that when a single vibration-damping assembly on the mounting bracket is overturned, the single contact point becomes two upper and lower contact points, and the upper limit structure and the lower limit structure simultaneously participate in the force, thereby improving the ability to resist overturning in the X and Y directions, dispersing the additional load, reducing the stiffness of the vibration-damping structure, and improving the vibration-damping performance and service life of the upper and lower vibration-damping pads.

[0018] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0020] Figure 1 An exploded view of the transmission support beam vibration reduction device of the present invention;

[0021] Figure 2 It is an assembly diagram of the transmission support beam vibration damping device of the present invention.

[0022] The markings in the figure are as follows: 1. Mounting bracket; 11. Mounting hole; 2. Vibration damping assembly; 21. Limiting ring; 22. Upper vibration damping pad; 221. First annular pad; 222. Second annular pad; 23. Lower vibration damping pad; 231. Vibration damping sleeve; 232. Annular tube; 233. Protrusion; 234. Groove; 235. Annular groove; 24. Sleeve; 25. Support gasket; 251. Connecting plate; 252. Limiting ring plate; 3. Fixing assembly; 31. Fastening bolt; 32. First connecting hole; 33. Second connecting hole. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0027] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a transmission support beam vibration reduction device, comprising: a mounting bracket 1, a vibration reduction assembly 2 and a fixing assembly 3, and mounting holes 11 are provided at both ends of the mounting bracket 1.

[0028] The vibration damping assembly 2 includes a limiting ring 21, an upper vibration damping pad 22, a lower vibration damping pad 23, a sleeve 24 and a support gasket 25. The limiting ring 21 is arranged on the mounting hole 11, and the inner wall of the bottom of the upper vibration damping pad 22 abuts against the outer wall of the limiting ring 21. The lower vibration damping pad 23 is arranged inside the mounting hole 11, and the sleeve 24 is inserted into the mounting hole 11. The outer wall of the top of the sleeve 24 abuts against the inner wall of the top of the upper vibration damping pad 22, and the support gasket 25 is arranged at the bottom of the lower vibration damping pad 23.

[0029] The fixing assembly 3 is inserted into the sleeve 24 .

[0030] Specifically, the top of the lower vibration-damping cushion 23 is inserted between the sleeve 24 and the limiting ring 21 , and the bottom of the lower vibration-damping cushion 23 is located between the mounting bracket 1 and the sleeve 24 .

[0031] The sleeve 24 and the limiting ring 21 act on the lower vibration damping pad 23 to form an upper limit structure for the top of the lower vibration damping pad 23, and through the action of the support gasket 25 and the mounting bracket 1, a lower limit structure is formed for the bottom of the lower vibration damping pad 23.

[0032] During use, when a single vibration damping assembly 2 on the mounting bracket 1 is overturned, one contact point becomes two contact points, the upper limit structure and the lower limit structure participate in the force at the same time, thereby improving the ability to resist overturning in the X and Y directions.

[0033] Furthermore, the inner wall of the support pad 25 and the mounting bracket 1 both play the role of limiting in X, Y, and Z directions, thereby reasonably improving the utilization rate of the structure.

[0034] The present invention arranges a limiting ring 21 on the mounting hole 11, the inner wall of the bottom of the upper vibration-damping pad 22 abuts against the outer wall of the limiting ring 21, the lower vibration-damping pad 23 is arranged inside the mounting hole 11, and the sleeve 24 is inserted into the mounting hole 11, the outer wall of the top of the sleeve 24 abuts against the inner wall of the top of the upper vibration-damping pad 22, the support gasket 25 is arranged at the bottom of the lower vibration-damping pad 23, and the fixing component 3 is inserted into the sleeve 24. The present invention acts on the lower vibration-damping pad 23 through the sleeve 24 and the limiting ring 21 to form an upper limit structure for the top of the lower vibration-damping pad 23, and forms a lower limit structure for the bottom of the lower vibration-damping pad 23 through the action of the support gasket 25 and the mounting bracket 1, and cooperates with the upper vibration-damping pad 22 to act on the sleeve 24 and the limiting ring 21, so that when the single vibration-damping component 2 on the mounting bracket 1 is overturned, one contact point becomes two upper and lower contact points. The upper limit structure and the lower limit structure participate in the force at the same time, thereby improving the ability to resist overturning in the X and Y directions, dispersing additional loads, reducing the stiffness of the vibration-damping structure, and improving the vibration-damping performance and service life of the upper and lower vibration-damping pads 22 and 23.

[0035] In one embodiment of the transmission support beam vibration damping device of the present invention, Figure 1 and Figure 2 As shown, the upper vibration-damping pad 22 includes a first annular pad 221 and a second annular pad 222. The thickness of the first annular pad 221 is less than the thickness of the second annular pad 222. The first end of the bottom of the first annular pad 221 is connected to the first end of the top of the second annular pad 222, and there is a V-shaped notch between the bottom of the first annular pad 221 and the top of the second annular pad 222.

[0036] The present invention sets the thickness of the first annular pad 221 to be smaller than the thickness of the second annular pad 222, and connects the first end of the bottom of the first annular pad 221 with the first end of the top of the second annular pad 222, so that the first annular pad 221 and the second annular pad 222 can be stably set in the sleeve 24, effectively ensuring the vibration reduction efficiency.

[0037] Furthermore, the inner wall of the first annular gasket 221 abuts against the outer wall of the sleeve 24 , and the inner wall of the second annular gasket 222 abuts against the outer wall of the limiting ring 21 .

[0038] In one embodiment of the transmission support beam vibration damping device of the present invention, Figure 1 and Figure 2 As shown, the lower vibration-damping pad 23 includes a vibration-damping sleeve 231 and an annular tube 232. The bottom of the annular tube 232 is connected to the top of the vibration-damping sleeve 231. The annular tube 232 is located between the limiting ring 21 and the sleeve 24. The vibration-damping sleeve 231 is located inside the mounting bracket 1, and the support gasket 25 is arranged at the bottom of the vibration-damping sleeve 231.

[0039] The present invention positions the annular tube 232 between the limiting ring 21 and the sleeve 24, positions the vibration-damping sleeve 231 inside the mounting bracket 1, and arranges the support gasket 25 at the bottom of the vibration-damping sleeve 231, so that the sleeve 24 and the limiting ring 21 act on the annular tube 232, and the support gasket 25 and the mounting bracket 1 act on the vibration-damping sleeve 231, thereby reducing the degradation of vibration-damping performance caused by additional loads and improving the vibration isolation performance, rubber life and overall applicability of the transmission support beam vibration-damping structure.

[0040] In one embodiment of the transmission support beam vibration damping device of the present invention, a protrusion 233 is provided on the outer wall of the vibration damping sleeve 231. Such a configuration can increase the friction between the vibration damping sleeve 231 and the mounting bracket 1 through the protrusion 233, thereby improving stability.

[0041] Further, such as Figure 2 As shown, a groove 234 is provided on the inner wall of the vibration-damping sleeve 231, so that there is a gap between the vibration-damping sleeve 231 and the sleeve 24, so that the gas inside the structure can be discharged smoothly when the lower vibration-damping cushion 23 is greatly compressed, thereby preventing the noise generated by the rubber forcibly squeezing the air during large deformation.

[0042] In one embodiment of the transmission support beam vibration damping device of the present invention, Figure 1 and Figure 2 As shown, an annular groove 235 is provided at the bottom of the vibration-damping sleeve 231 .

[0043] The supporting gasket 25 includes a connecting piece 251 and a limiting ring 21 . The limiting ring 21 is connected to the outer edge of the connecting piece 251 , and the limiting ring 21 is inserted into the annular groove 235 .

[0044] The present invention connects the limiting ring 21 to the outer edge of the connecting piece 251, and inserts the limiting ring 21 into the annular groove 235, so that the limiting ring 21 can cooperate with the inner wall of the mounting bracket 1 to clamp and limit the outer edge of the vibration-damping sleeve 231, thereby improving the ability to resist overturning in the X and Y directions, dispersing additional loads, reducing the stiffness of the vibration-damping structure, and improving the vibration-damping performance and service life of the lower vibration-damping pad 23.

[0045] In one embodiment of the transmission support beam vibration damping device of the present invention, Figure 1 and Figure 2 As shown, the fixing assembly 3 includes a fastening bolt 31, a first connecting hole 32 and a second connecting hole 33. The first connecting hole 32 is set at the center position of the upper vibration-damping pad 22, and the second connecting hole 33 is set at the center position of the support gasket 25. The sleeve 24 is inserted into the first connecting hole 32 and the mounting hole 11, and the fastening bolt 31 passes through the second connecting hole 33, and the lower vibration-damping pad 23 is inserted into the sleeve 24.

[0046] The present invention increases the stability of the installation of structures such as the support gasket 25 and the sleeve 24 by setting the first connecting hole 32 at the center position of the upper vibration-damping pad 22, setting the second connecting hole 33 at the center position of the support gasket 25, inserting the sleeve 24 into the first connecting hole 32 and the mounting hole 11, and passing the fastening bolt 31 through the second connecting hole 33 and the lower vibration-damping pad 23 into the sleeve 24.

[0047] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A transmission support beam vibration reduction device, characterized in that: include: A mounting bracket, a vibration reduction assembly and a fixing assembly, wherein both ends of the mounting bracket have mounting holes; The vibration damping assembly includes a limiting ring, an upper vibration damping pad, a lower vibration damping pad, a sleeve and a support washer, the limiting ring is arranged on the mounting hole, the inner wall of the bottom of the upper vibration damping pad abuts against the outer wall of the limiting ring, the lower vibration damping pad is arranged inside the mounting hole, and the sleeve is inserted into the mounting hole, the outer wall of the top of the sleeve abuts against the inner wall of the top of the upper vibration damping pad, and the support washer is arranged at the bottom of the lower vibration damping pad; The fixing assembly is inserted into the sleeve.

2. The transmission support beam vibration damping device according to claim 1, characterized in that: The upper vibration-damping pad includes a first annular pad and a second annular pad, the thickness of the first annular pad is smaller than the thickness of the second annular pad, the first end of the bottom of the first annular pad is connected to the first end of the top of the second annular pad, and there is a V-shaped notch between the bottom of the first annular pad and the top of the second annular pad.

3. The transmission support beam vibration damping device according to claim 2, characterized in that: The inner wall of the first annular pad abuts against the outer wall of the sleeve, and the inner wall of the second annular pad abuts against the outer wall of the limiting ring.

4. The transmission support beam vibration damping device according to claim 1, characterized in that: The lower vibration-damping cushion includes a vibration-damping sleeve and an annular tube, the bottom of the annular tube is connected to the top of the vibration-damping sleeve, the annular tube is located between the limiting ring and the sleeve, the vibration-damping sleeve is located inside the mounting bracket, and the support gasket is arranged at the bottom of the vibration-damping sleeve.

5. The transmission support beam vibration damping device according to claim 4, characterized in that: The outer wall of the vibration damping sleeve is provided with a convex body.

6. The transmission support beam vibration damping device according to claim 4, characterized in that: The bottom of the vibration damping sleeve is provided with an annular groove; The supporting gasket includes a connecting piece and a limiting ring piece, the limiting ring piece is connected to the outer edge of the connecting piece, and the limiting ring piece is inserted into the annular groove.

7. The transmission support beam vibration damping device according to claim 1, characterized in that: The fixing assembly includes a fastening bolt, a first connecting hole and a second connecting hole. The first connecting hole is arranged at the center of the upper vibration-damping pad, and the second connecting hole is arranged at the center of the support gasket. The sleeve is inserted into the first connecting hole and the mounting hole, and the fastening bolt passes through the second connecting hole, and the lower vibration-damping pad is inserted into the sleeve.

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