Vibration reduction structure and motor vehicle

Abstract

The utility model relates to a vibration reduction structure which is used for being arranged on a cradle shaft in a sleeving mode, and the cradle shaft is inserted into a connecting cylinder. The vibration reduction structure comprises an outer lining, an inner lining and an inner lining, wherein the outer lining is fixedly arranged in the connecting cylinder; an accommodating cavity is formed in the outer bushing; the inner bushing is fixedly arranged in the accommodating cavity of the outer bushing; the neck bush is provided with a mounting hole for mounting the cradle shaft; the vibration reduction bushing is arranged outside the inner bushing in a sleeving manner and is connected with the outer bushing; the vibration reduction bushing is used for absorbing vibration energy, a cutting groove is formed in the vibration reduction bushing, and the cutting groove extends into the vibration reduction bushing from the surface of the side wall of the vibration reduction bushing. According to the vibration reduction structure, the deformation generation capacity is enhanced, the vibration reduction structure deforms more easily when being vibrated, a better vibration absorption effect can be provided, the vibration reduction performance is improved, the motion characteristics of the whole vehicle cannot be affected, and practicability is high.

Description

Technical Field

[0001] This application relates to the field of motor vehicle technology, and in particular to vibration damping structures and motor vehicles. Background Technology

[0002] Engines generate vibrations during operation. When these vibrations are transmitted to the vehicle body, they cause vibrations in the body and floor, reducing passenger comfort. Furthermore, they can cause vibrations in the steering mechanism, pedal assembly, and other components, increasing safety hazards. Prolonged exposure to this vibration can also reduce the rigidity of the body and floor, leading to fatigue damage and shortened lifespan. Utility Model Content

[0003] Therefore, it is necessary to provide a vibration reduction structure and a vehicle to address the problem that the vibration generated by the engine during operation increases the safety hazards of motor vehicles when the vibration is transmitted to the vehicle body.

[0004] A vibration damping structure, the vibration damping structure comprising:

[0005] Outer bushing, wherein the outer bushing has an accommodating cavity;

[0006] An inner bushing is fixedly disposed within the receiving cavity of the outer bushing; the inner bushing has mounting holes for mounting the cradle shaft; and,

[0007] A vibration damping bushing is fitted over the outer side of the inner bushing and connected to the outer bushing. The vibration damping bushing is used to absorb vibration energy. A groove is provided on the vibration damping bushing, which extends from the side wall surface of the vibration damping bushing toward the interior of the vibration damping bushing.

[0008] In one embodiment, the vibration damping bushing includes a connecting portion and an extension portion. The connecting portion is sleeved on the outside of the inner bushing, and the extension portion is connected to the outside of the connecting portion and connected to the outer bushing. The cross-sectional area of ​​the connecting portion in the direction perpendicular to the inner bushing and pointing to the outer bushing gradually decreases in the direction of the inner bushing and pointing to the outer bushing, and the groove is located in the extension portion.

[0009] In one embodiment, the groove extends in a direction parallel to the axial direction of the inner bushing.

[0010] In one embodiment, the vibration damping bushing has a plurality of slots located at the same end of the vibration damping bushing.

[0011] In one embodiment, the plurality of the grooves are evenly arranged along the circumference of the vibration damping bushing.

[0012] In one embodiment, the groove extends from the sidewall surface of the vibration damping bushing to a depth of 5 mm to 8 mm into the interior of the vibration damping bushing.

[0013] In one embodiment, the opening of the inner liner is provided with a guide slope, which is arranged around the opening of the inner liner and is inclined relative to the axial direction of the inner liner.

[0014] In one embodiment, the outer bushing, the inner bushing, and the vibration damping bushing are integrally formed.

[0015] A motor vehicle includes a frame, a rocker arm, an engine, and a vibration damping structure as described above. The rocker arm includes a connecting cylinder, a rocker arm shaft, and a connecting member. The connecting cylinder is detachably connected to the frame, and an outer bushing is fixedly disposed within the connecting cylinder. The rocker arm shaft is inserted into the connecting cylinder and into the mounting hole of the inner bushing. One end of the connecting member is connected to the connecting cylinder, and the other end of the connecting member is connected to the engine and is rotatable around the connecting cylinder.

[0016] In one embodiment, the motor vehicle includes two vibration damping structures, which are respectively disposed at both ends inside the connecting cylinder and respectively sleeved on the outside of the cradle shaft; the grooves of the two vibration damping structures are arranged opposite to each other.

[0017] When the aforementioned vibration damping structure is fitted onto the cradle shaft, it can absorb and dissipate vibration energy from the engine, thereby reducing the vibration transmitted to the vehicle body, improving the stability of the vehicle, and reducing safety hazards. By creating grooves on the vibration damping bushing, and extending the grooves from the side wall surface of the vibration damping bushing toward the interior of the bushing, the stiffness of the vibration damping structure is reduced, and its ability to deform is enhanced. The vibration damping structure is more easily deformed when subjected to vibration, which can provide better vibration absorption and improve vibration damping performance without affecting the overall vehicle's motion characteristics, making it highly practical. Attached Figure Description

[0018] Figure 1 This is a partial structural diagram of a motor vehicle according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of a vibration reduction structure according to an embodiment of this application.

[0020] Figure 3 for Figure 2 Schematic diagram of cross section along line BB.

[0021] Figure 4 for Figure 1 A cross-sectional view along line AA.

[0022] Figure 5 for Figure 4 Enlarged diagram of point D in the middle.

[0023] Reference numerals: 10, vibration damping structure; 11, outer bushing; 111, accommodating cavity; 12, inner bushing; 121, mounting hole; 122, guide slope; 13, vibration damping bushing; 131, groove; 132, connecting part; 133, extension part; 20, frame; 30, cradle; 31, connecting cylinder; 32, cradle shaft; 33, connecting piece; 40, engine; 50, vibration damping component. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] Please see Figure 1 , Figure 1This illustration shows a partial structural diagram of a motor vehicle according to an embodiment of this application. The motor vehicle includes a frame 20, a rocker arm 30, and an engine 40. The rocker arm 30 includes a connecting cylinder 31, a rocker arm shaft 32, and a connector 33. The connecting cylinder 31 is detachably connected to the frame 20. The rocker arm shaft 32 is inserted into the connecting cylinder 31. One end of the connector 33 is connected to the connecting cylinder 31, and the other end of the connector 33 is connected to the engine 40 and can rotate around the connecting cylinder 31. As mentioned in the background art, the engine 40 in a motor vehicle will generate vibrations during operation. When these vibrations are transmitted to the vehicle body, they not only reduce passenger comfort but may also increase safety hazards. To solve the above problems, an embodiment of this application provides a vibration damping structure 10. The vibration damping structure 10 is sleeved on the rocker arm shaft 32 to absorb and dissipate the vibration energy from the engine 40, thereby reducing the vibration transmitted to the vehicle body, improving the stability of the motor vehicle, and reducing safety hazards.

[0031] Please refer to the following: Figure 2 , Figure 2 A schematic diagram of the vibration damping structure 10 in one embodiment of this application is shown. The vibration damping structure 10 provided in one embodiment of this application includes an outer bushing 11, an inner bushing 12, and a vibration damping bushing 13. The outer bushing 11 has a receiving cavity 111. The inner bushing 12 is fixedly disposed in the receiving cavity 111 of the outer bushing 11 and has a mounting hole 121 for mounting the cradle shaft 32. The vibration damping bushing 13 is sleeved on the outside of the inner bushing 12 and connected to the outer bushing 11, that is, the inner bushing 12 is connected to the outer bushing 11 through the vibration damping bushing 13. The vibration damping bushing 13 is used to absorb vibration energy. Understandably, when the vibration damping structure 10 is mounted on the cradle shaft 32, the vibration generated by the engine 40 is transmitted to the inner bushing 12 through the cradle shaft 32. At this time, the vibration damping bushing 13 mounted on the outside of the inner bushing 12 can deform to absorb and dissipate the vibration energy from the engine 40, thereby reducing the vibration transmitted to the vehicle body, improving the stability of the motor vehicle, and reducing safety hazards.

[0032] Please refer to the following: Figure 3 , Figure 3 It shows Figure 2In a cross-sectional view along line BB, in some embodiments, the vibration damping bushing 13 includes a connecting portion 132 and an extension portion 133. The connecting portion 132 is sleeved on the outside of the inner bushing 12, and the extension portion 133 is connected to the outside of the connecting portion 132 and connected to the outer bushing 11. That is, the connecting portion 132 includes a plurality of first sub-plates, all of which are disposed on the outer peripheral surface of the inner bushing 12 and are sequentially connected circumferentially on the outer peripheral surface of the inner bushing 12 to form a first space; the inner bushing 12 is located in the first space, and the surfaces of the plurality of first sub-plates facing the inner bushing 12 abut against the outer peripheral surface of the inner bushing 12. The extension 133 includes multiple second sub-plates, each disposed on the outer peripheral surface of the connecting portion 132 and sequentially connected circumferentially on the outer peripheral surface of the connecting portion 132 to form a second space. The connecting portion 132 is located in the second space. The surfaces of the multiple second sub-plates facing the connecting portion 132 abut against the outer peripheral surface of the connecting portion 132, and the surfaces of the multiple second sub-plates facing the outer bushing 11 abut against the inner wall of the outer bushing 11. It can be understood that by providing the extension 133 outside the connecting portion 132, the working space of the vibration damping bushing 13 can be effectively increased, thereby allowing for a larger deformation space to absorb vibration energy, improving the vibration damping bushing 13's ability to absorb vibration energy, and enhancing the vibration damping performance of the vibration damping structure 10.

[0033] In some embodiments, the cross-sectional area of ​​the connecting portion 132 in the direction perpendicular to the inner bushing 12 towards the outer bushing 11 gradually decreases in the same direction. That is, the axial cross-sectional area of ​​the connecting portion 132 closer to the inner bushing 12 is larger, while the axial cross-sectional area of ​​the connecting portion 132 farther from the inner bushing 12 is smaller. On the one hand, when the axial cross-sectional area of ​​the connecting portion 132 closer to the inner bushing 12 is larger, the effective contact area between the vibration damping bushing 13 and the inner bushing 12 can be increased, allowing the vibration received by the cradle shaft 32 to be smoothly transmitted through the inner bushing 12 to the vibration damping bushing 13, thereby enhancing the vibration transmission effect. On the other hand, as the area of ​​the axial cross section of the connecting part 132 gradually decreases from the side close to the inner bushing 12 to the side far away from the inner bushing 12, the connecting part 132 can not only gradually absorb vibration energy and attenuate vibration, but also reduce the stiffness of the damping bushing 13, making the damping bushing 13 more prone to deformation, thereby improving the vibration absorption capacity of the damping bushing 13 and reducing the vibration transmitted to other components.

[0034] In some embodiments, the damping bushing 13 has a groove 131 extending from the sidewall surface of the damping bushing 13 toward the interior of the damping bushing 13, reducing the stiffness of the damping bushing 13 and enhancing its ability to deform. In some embodiments, the groove 131 is located at the extension 133 of the damping bushing 13, which improves the damping performance of the damping structure 10 while avoiding the problem of increasing the stiffness of the damping structure 10 due to increasing the working space of the damping bushing 13, thereby affecting the motion characteristics of the entire vehicle.

[0035] In some embodiments, the extension direction of the groove 131 is parallel to the axial direction of the inner bushing 12, so that the deformation of the damping bushing 13 can occur along the direction of the groove 131, providing a better damping effect. In other embodiments, the extension direction of the groove 131 may be inclined relative to the axial direction of the inner bushing 12, and is not limited thereto.

[0036] In some embodiments, the groove 131 extends from the sidewall surface of the damping bushing 13 to a depth of 5mm to 8mm into the interior of the damping bushing 13, which can balance the requirements of damping effect, stiffness, and fatigue life of the damping structure 10. In this embodiment, the groove 131 extends from the sidewall surface of the damping bushing 13 to a depth of 5mm into the interior of the damping bushing 13. In other embodiments, the depth of the groove 131 extending from the sidewall surface of the damping bushing 13 to the interior of the damping bushing 13 can also be set to 6mm, 7mm, or 8mm, etc., and is not limited thereto.

[0037] In some embodiments, the damping bushing 13 has multiple slots 131, which allows the damping bushing 13 to have more elastic deformation space, enabling the damping structure 10 to better disperse and absorb vibration energy when subjected to vibration, thereby improving the damping performance of the damping structure 10. In some embodiments, the multiple slots 131 on the damping bushing 13 are all located at the same end of the damping bushing 13.

[0038] In some embodiments, a plurality of slots 131 are evenly arranged along the circumference of the damping bushing 13, so that the damping bushing 13 can evenly disperse vibration energy and provide better damping effect. For example, in this embodiment, the damping bushing 13 has two slots 131, both of which are located at the same end of the damping bushing 13, and the two slots 131 are evenly arranged along the circumference of the damping bushing 13.

[0039] In some embodiments, the vibration damping bushing 13 is made of a vibration damping material, including but not limited to rubber, polyurethane, etc. In this embodiment, the vibration damping bushing 13 is made of rubber, which gives it good deformability and the ability to absorb vibration energy from the outside, reducing vibration transmission. In other embodiments, the vibration damping bushing 13 is made of polyurethane. The vibration damping bushing 13 made of polyurethane is more wear-resistant and pressure-resistant, and can provide effective vibration damping in vibration environments with larger amplitudes, so it is not limited thereto.

[0040] In some embodiments, the opening of the inner bushing 12 is provided with a guide slope 122. The guide slope 122 is arranged around the opening of the inner bushing 12 and is inclined relative to the axial direction of the inner bushing 12. By providing the guide slope 122, the friction and resistance during the insertion of the cradle shaft 32 into the inner bushing 12 can be reduced, the efficiency of assembling the cradle shaft 32 with the vibration damping structure 10 can be improved, and the difficulty of assembling the cradle shaft 32 with the vibration damping structure 10 can be reduced.

[0041] In some embodiments, the outer bushing 11, the inner bushing 12, and the vibration damping bushing 13 are integrally formed, which is beneficial to improving the overall stability of the vibration damping structure 10 and helps to provide better vibration damping effect.

[0042] When the vibration damping structure 10 provided in this application is mounted on the cradle shaft 32, it can absorb and dissipate the vibration energy from the engine 40, thereby reducing the vibration transmitted to the vehicle body, improving the stability of the motor vehicle, and reducing safety hazards. Furthermore, by creating a groove 131 extending from the sidewall surface of the vibration damping bushing 13 towards the interior of the bushing 13, the stiffness of the vibration damping structure 10 is reduced, and its ability to deform is enhanced. The vibration damping structure 10 is more easily deformed when subjected to vibration. The vibration damping structure 10 provided in this application can provide good vibration absorption without affecting the overall vehicle's motion characteristics, making it highly practical.

[0043] Please refer to the following: Figure 4 and Figure 5 , Figure 4 It shows Figure 1 Schematic diagram of cross section along line AA. Figure 5 It shows Figure 4An enlarged schematic diagram at point D. An embodiment of this application provides a motor vehicle including a frame 20, a rocker arm 30, an engine 40, and a vibration damping structure 10. The rocker arm 30 includes a connecting cylinder 31, a rocker arm shaft 32, and a connecting member 33. The connecting cylinder 31 is detachably connected to the frame 20, and an outer bushing 11 is fixedly disposed within the connecting cylinder 31. The rocker arm shaft 32 is inserted into the connecting cylinder 31 and into the mounting hole 121 of the inner bushing 12. One end of the connecting member 33 is connected to the connecting cylinder 31, and the other end is connected to the engine 40, and can rotate around the connecting cylinder 31. By providing the vibration damping structure 10, the vibration transmission of the engine 40 can be reduced, improving the riding experience of passengers inside the vehicle, reducing the impact of vibration generated by the engine 40 on other systems, reducing safety hazards, and thereby extending the service life of the motor vehicle. In some embodiments, the motor vehicle includes, but is not limited to, automobiles, motorcycles, etc.

[0044] In some embodiments, the motor vehicle includes two vibration damping structures 10, which are respectively disposed at the inner ends of the connecting cylinder 31 and respectively sleeved on the outside of the cradle shaft 32. The slots 131 of the two vibration damping structures 10 are arranged opposite to each other, which can effectively reduce vibration and improve the stability of the motor vehicle.

[0045] In some embodiments, the motor vehicle further includes a plurality of vibration damping elements 50, which are sleeved on the outside of the cradle shaft 32 and located between two vibration damping structures 10. The plurality of vibration damping elements 50 are spaced apart along the length direction of the cradle shaft 32. In this embodiment, the vibration damping element 50 is a vibration damping rubber ring. In other embodiments, the vibration damping element 50 may also be other objects with vibration damping effect, and is not limited thereto.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A vibration damping structure, characterized in that, The vibration damping structure includes: Outer bushing, wherein the outer bushing has an accommodating cavity; An inner bushing is fixedly disposed within the receiving cavity of the outer bushing; the inner bushing has mounting holes for mounting the cradle shaft; and, A vibration damping bushing is fitted over the outer side of the inner bushing and connected to the outer bushing. The vibration damping bushing is used to absorb vibration energy. A groove is provided on the vibration damping bushing, which extends from the side wall surface of the vibration damping bushing toward the interior of the vibration damping bushing.

2. The vibration reduction structure according to claim 1, characterized in that, The vibration damping bushing includes a connecting portion and an extension portion. The connecting portion is sleeved on the outside of the inner bushing, and the extension portion is connected to the outside of the connecting portion and connected to the outer bushing. The cross-sectional area of ​​the connecting portion in the direction perpendicular to the inner bushing and pointing to the outer bushing gradually decreases in the direction of the inner bushing and pointing to the outer bushing, and the groove is located in the extension portion.

3. The vibration reduction structure according to claim 1, characterized in that, The groove extends in a direction parallel to the axial direction of the inner bushing.

4. The vibration reduction structure according to claim 1, characterized in that, The vibration damping bushing has multiple slots, and the multiple slots are located at the same end of the vibration damping bushing.

5. The vibration reduction structure according to claim 4, characterized in that, The plurality of the grooves are evenly arranged along the circumference of the vibration damping bushing.

6. The vibration reduction structure according to claim 1, characterized in that, The groove extends from the side wall surface of the vibration damping bushing to a depth of 5mm to 8mm into the interior of the vibration damping bushing.

7. The vibration reduction structure according to claim 1, characterized in that, The inner liner has a guide slope at its opening, which is arranged around the opening of the inner liner and is inclined relative to the axial direction of the inner liner.

8. The vibration reduction structure according to claim 1, characterized in that, The outer bushing, the inner bushing, and the vibration damping bushing are integrally formed.

9. A motor vehicle, characterized in that, The motor vehicle includes a frame, a rocker arm, an engine, and a vibration damping structure as described in any one of claims 1-8. The rocker arm includes a connecting cylinder, a rocker arm shaft, and a connecting member. The connecting cylinder is detachably connected to the frame, and the outer bushing is fixed inside the connecting cylinder. The rocker arm shaft is inserted into the connecting cylinder and into the mounting hole of the inner bushing. One end of the connecting member is connected to the connecting cylinder, and the other end of the connecting member is connected to the engine and is rotatable around the connecting cylinder.

10. The motor vehicle according to claim 9, characterized in that, The motor vehicle includes two vibration damping structures, which are respectively disposed at both ends inside the connecting cylinder and respectively sleeved on the outside of the cradle shaft; the grooves of the two vibration damping structures are arranged opposite each other.

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