Shock absorption and noise reduction structure of rear wheel cover

Abstract

The utility model relates to a rear wheel cover shock absorption and noise reduction structure which comprises a metal wheel cover, a lining, sound insulation cotton and a damping mechanism. The lining is arranged on the metal wheel cover through a threaded connecting piece; the damping mechanism is arranged between the metal wheel cover and the lining; a gap between the metal wheel cover and the lining is filled with the sound insulation cotton; wherein a bulge is arranged on the metal wheel cover; the damping mechanism comprises a sleeve and an elastic sleeve arranged in the sleeve; the elastic sleeve is arranged on the protrusion in a sleeving mode, and the two ends of the elastic sleeve extend out of the sleeve in the length direction. The metal wheel cover and the lining are in contact with the elastic sleeve; the metal wheel cover and the lining are in indirect contact with the sleeve through the elastic sleeve. Vibration energy transmitted by the lining is dissipated through the damping mechanism, the amplitude of the rear wheel cover is reduced, and key parts, such as tires, a suspension system and bearings, on the rear portion of a vehicle are effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile rear wheel cover technical field especially relates to rear wheel cover shock absorption and noise reduction structure. BACKGROUND

[0002] The rear wheel cover can block the splashing of mud, stones and other flying objects thrown up by the tires during driving, protecting the connecting part between the vehicle body and the wheels from damage. The rear wheel cover also plays a role in beautifying the appearance of the vehicle. By installing the rear wheel cover, the appearance of the vehicle can be made more neat and beautiful, and the overall image of the vehicle can be improved.

[0003] Although the rear wheel cover avoids direct impact of foreign objects on the parts on the vehicle body, the impact of these foreign objects on the rear wheel cover will produce a lot of noise and cause the rear wheel cover to vibrate. Since the rear wheel cover is directly connected to the main body of the vehicle, the vibration of the rear wheel cover will directly affect the bearings, brake discs, brake pads and tires of the rear wheels. This will exacerbate the wear and tear of these parts, and even cause malfunctions. These damages not only increase the maintenance cost, but also affect the driving performance and safety of the vehicle.

[0004] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] In view of the above shortcomings of the prior art, the purpose of the present utility model is to provide a rear wheel cover shock absorption and noise reduction structure to improve the shock absorption and noise reduction performance of the rear wheel cover of the vehicle.

[0006] The technical solution of the utility model is as follows:

[0007] The rear wheel cover shock absorption and noise reduction structure comprises a metal wheel cover, an inner liner, soundproof cotton and a damping mechanism.

[0008] The inner liner is arranged on the metal wheel cover through a threaded connecting piece.

[0009] The damping mechanism is arranged between the metal wheel cover and the inner liner.

[0010] The soundproof cotton fills the gap between the metal wheel cover and the inner liner.

[0011] The metal wheel cover is provided with a protrusion. The damping mechanism comprises a sleeve and an elastic sleeve arranged in the sleeve. The elastic sleeve is sleeved on the protrusion, and the length of the elastic sleeve extends out of the sleeve at both ends. The metal wheel cover and the inner liner contact the elastic sleeve. The metal wheel cover and the inner liner indirectly contact the sleeve through the elastic sleeve.

[0012] Further, a first elastic member is arranged on the threaded connection between the metal wheel cover and the inner liner.

[0013] Further, an extension is arranged on the sleeve in a circumferential direction, and a fastener is arranged on the inner liner and passes through the extension.

[0014] Further, a second elastic member is arranged on the fastener between the metal wheel cover and the extension, and a second elastic member is also arranged on the fastener between the inner liner and the extension.

[0015] Further, a waist-shaped hole is arranged on the extension.

[0016] Further, at least two extensions are arranged, and the two extensions are arranged uniformly around the sleeve.

[0017] Further, the part of the elastic sleeve extending out of the sleeve is arranged in a circumferential direction to form a damping pad, the upper damping pad is clamped by the sleeve and the metal wheel cover, and the lower damping pad is clamped by the sleeve and the inner liner.

[0018] Further, a notch is arranged on the damping pad.

[0019] Further, a gasket is arranged between the metal wheel cover and the elastic sleeve, and a gasket is also arranged between the inner liner and the elastic sleeve, and a protrusion is arranged on the gasket to clamp the elastic sleeve.

[0020] Further, the diameter of the sleeve gradually decreases in the direction from the inner liner to the metal wheel cover.

[0021] The beneficial technical effects of the utility model are as follows:

[0022] (1) The rear wheel cover damping and noise reduction structure in the utility model is arranged between the metal wheel cover and the inner liner, and the sound insulation cotton and the damping mechanism are arranged between the metal wheel cover and the inner liner. The sound insulation cotton can effectively absorb the noise generated by the impact of foreign matters, the noise generated by the friction between the tire and the ground, and the aerodynamic noise generated when the tire rotates at high speed. The sound insulation cotton can also effectively relieve the resonance noise generated between the metal wheel cover and the inner liner. Further, the sound insulation cotton can create a more quiet driving environment for the driver, which is helpful to improve the attention and comfort of the vehicle driver. In addition, the sound insulation cotton filled between the metal wheel cover and the inner liner can disperse and absorb the impact force transmitted by the inner liner, the sound insulation cotton reduces the stress concentration phenomenon of the inner liner, and further prolongs the service life of the rear wheel cover.

[0023] The damping mechanism can dissipate the vibration energy transmitted by the inner liner, reduce the amplitude of the rear wheel cover, and effectively protect the key components of the rear part of the vehicle, such as tires, suspension systems, bearings and the like. These components are prone to wear, looseness and even damage under the condition of long-time vibration and impact. The rear wheel cover can reduce the vibration and impact of these components, prolong the service life and reduce the maintenance cost. In addition, vibration is an important cause of noise, and through the damping of the rear wheel cover, the noise generated by vibration, such as the noise generated by the friction between the tire and the ground and the noise generated by the vibration of the suspension system, can be effectively reduced.

[0024] (2) Further, the sleeve is further provided with an extension part, and the number and area of the connecting points between the damping mechanism and the inner liner are increased through the fastener and the extension part. The connecting area between the damping mechanism and the inner liner is increased, which helps to more evenly distribute the damping force generated by the damping mechanism in the working process, so that the shock absorber can better absorb and disperse the impact and vibration of the inner liner, thereby improving the damping effect. Further, the influence of vibration on the vehicle body and the seat is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A vertical section structure schematic view of the rear wheel cover damping and noise reduction structure of the utility model is shown.

[0026] Figure 2 A local enlarged view of the rear wheel cover damping and noise reduction structure of the utility model at A is shown.

[0027] Figure 3 A local enlarged view of the rear wheel cover damping and noise reduction structure of the utility model at B is shown.

[0028] Figure 4 A three-dimensional structure schematic view of the damping mechanism in the rear wheel cover damping and noise reduction structure of the utility model is shown.

[0029] Markings in the drawings:

[0030] 1, metal wheel cover; 2, sound insulation cotton; 3, inner liner; 41, threaded connecting piece; 42, first elastic piece; 5, damping mechanism; 51, gasket; 52, sleeve; 521, extension part; 522, waist-shaped hole; 53, elastic sleeve; 531, damping pad; 532, notch; 54, fastener; 541, second elastic piece. DETAILED DESCRIPTION

[0031] In order to make the purpose, characteristics and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be known that the structure, proportion, size and the like shown in the drawings attached to the present specification are merely used to cooperate with the content disclosed in the specification, for the understanding and reading of persons skilled in the art, and are not used to limit the limiting conditions for the implementation of the utility model, so they do not have the technical substantive meaning, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be produced by the utility model, should still fall within the range covered by the technical content disclosed by the utility model.

[0032] In the description of the utility model, the orientation or positional relationship indicated by the limiting terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] Figure 1 A vertical section structure schematic diagram of the rear wheel cover damping and noise reduction structure of the utility model is shown. Figure 2 A local enlarged view of the rear wheel cover damping and noise reduction structure of the utility model at A is shown. Figure 3 A local enlarged view of the rear wheel cover damping and noise reduction structure of the utility model at B is shown. Please refer to Figure 1 , Figure 2 and Figure 3 , the rear wheel cover damping and noise reduction structure, the rear wheel cover damping and noise reduction structure comprises a metal wheel cover 1, an inner liner 3, sound insulation cotton 2 and a damping mechanism 5. The inner liner 3 is arranged on the metal wheel cover 1 through a threaded connecting piece 41. The damping mechanism 5 is arranged between the metal wheel cover 1 and the inner liner 3. The sound insulation cotton 2 fills the gap between the metal wheel cover 1 and the inner liner 3. The sound insulation cotton 2 can effectively absorb the noise generated by the impact of foreign matters, the noise of tire friction with the ground, and the aerodynamic noise of the tire rotating at high speed. The sound insulation cotton 2 can also effectively alleviate the resonance noise generated between the metal wheel cover 1 and the inner liner 3. Further, it creates a more peaceful driving environment for the driver. It helps to improve the attention and comfort of the vehicle driver. In addition, the sound insulation cotton 2 is filled between the metal wheel cover 1 and the inner liner 3, which can disperse and absorb the impact force from the tire, and the sound insulation cotton 2 reduces the stress concentration phenomenon of the inner liner 3, thereby prolonging the service life of the rear wheel cover.

[0034] The metal wheel cover 1 is provided with a protrusion. The damping mechanism 5 comprises a sleeve 52 and an elastic sleeve 53 arranged in the sleeve 52. The elastic sleeve 53 can be made of rubber. The elastic sleeve 53 is sleeved on the protrusion, and the length of the elastic sleeve 53 extends out of the sleeve 52 at both ends. The metal wheel cover 1 and the inner liner 3 contact the elastic sleeve 53. The metal wheel cover 1 and the inner liner 3 indirectly contact the sleeve 52 through the elastic sleeve 53. The damping mechanism 5 can dissipate the vibration energy transmitted by the inner liner 3, reduce the amplitude of the rear wheel cover, and effectively protect the key components of the rear part of the vehicle, such as the tire, the suspension system, the bearing, etc. These components are prone to wear, looseness, and even damage under the condition of long-time vibration and impact. The rear wheel cover can reduce the vibration and impact suffered by these components, prolong the service life thereof, and reduce the maintenance cost. In addition, vibration is an important cause of noise, and the damping of the rear wheel cover can effectively reduce the noise generated by vibration, such as the noise generated by the friction between the tire and the ground and the noise generated by the vibration of the suspension system.

[0035] Please refer to Figure 1 、 Figure 2 and Figure 3 , the first elastic member 42 is arranged on the threaded connecting piece 41 between the metal wheel cover 1 and the inner liner 3. The first elastic member 42 is also arranged on the threaded connecting piece 41 away from the metal wheel cover 1 on the side of the inner liner 3. The first elastic member 42 can fill the gap between the threaded connecting piece 41, the metal wheel cover 1 and the inner liner 3, increase the contact area of each part, and thus increase the friction. The increase of the friction helps to improve the fastening and stability of the threaded connecting piece 41, and prevent the connection parts from loosening under the condition of vibration or impact.

[0036] Preferably, the diameter of the sleeve 52 gradually decreases in the direction from the inner liner 3 to the metal wheel cover 1. As the diameter of the sleeve 52 decreases, the space inside the sleeve 52 for the deformation of the elastic sleeve 53 also becomes smaller and smaller. That is, after the inner liner 3 is extruded and deformed towards the metal wheel cover 1, the deformation ability of the elastic sleeve 53 is limited and decreased, limiting the deformation range of the inner liner 3, and avoiding the damage of the inner liner 3 caused by large deformation amplitude.

[0037] Figure 4 The three-dimensional structure schematic diagram of the damping mechanism in the rear wheel cover damping and noise reduction structure of the utility model is shown. Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4The extension part 521 is arranged on the sleeve 52 in circumferential extension. The fastener 54 is arranged on the inner liner 3 and penetrates the extension part 521. The fastener 54 can be a screw, a nut, a bolt or a bolt. By the fastener 54 and the extension part 521, the connecting point position and the connecting area between the damping mechanism 5 and the inner liner 3 are increased. The connecting area between the damping mechanism 5 and the inner liner 3 is increased, which helps to more evenly distribute the damping force generated by the damping mechanism 5 during operation, so that the shock absorber can better absorb and disperse the impact and vibration of the inner liner 3, thereby improving the damping effect. Further reduce the impact of vibration on the vehicle body and the seat.

[0038] Preferably, the second elastic member 541 is arranged on the fastener 54 between the metal wheel cover 1 and the extension part 521. The second elastic member 541 is also arranged on the fastener 54 between the inner liner 3 and the extension part 521. The friction of the fastener 54 relative to the extension part 521 is increased by the second elastic member 541, thereby enhancing the fastening of the fastener 54.

[0039] More preferably, the extension part 521 is provided with at least two, and a waist-shaped hole 522 is arranged on the extension part 521. The two extension parts 521 are uniformly arranged around the sleeve 52. The plurality of extension parts 521 are uniformly arranged around the sleeve 52, so that the stress transmitted by the inner liner 3 to the damping mechanism 5 is more uniform, so that the shock absorber can better absorb and disperse the impact and vibration of the inner liner 3, thereby improving the damping effect. At the same time, the waist-shaped hole 522 is arranged, so that the installation range of the fastener 54 is more flexible.

[0040] Please refer to Figure 1 , Figure 2 and Figure 3 , the part of the elastic sleeve 53 extending out of the sleeve 52 is circumferentially extended to form a damping pad 531. The upper damping pad 531 is clamped by the sleeve 52 and the metal wheel cover 1. The lower damping pad 531 is clamped by the sleeve 52 and the inner liner 3. The vibration of the inner liner 3 directly acts on the elastic sleeve 53 and opens a notch 532 on the damping pad 531. The notch 532 leaves a space for the damping pad 531 to deform and expand, so as to enhance the deformation ability of the damping pad 531.

[0041] Preferably, the gasket 51 is arranged between the metal wheel cover 1 and the elastic sleeve 53. The gasket 51 is also arranged between the inner liner 3 and the elastic sleeve 53. The gasket 51 uniformly transmits. The gasket 51 is provided with a protrusion for clamping the elastic sleeve 53.

[0042] The specific working process of the utility model is as follows:

[0043] When the inner liner 3 is impacted, the vibration is transmitted to the metal wheel cover 1 along the threaded connection 41, the damping mechanism 5 and the sound-absorbing cotton, wherein the first elastic member 42 increases the friction of each part, thereby ensuring the stability of the threaded connection 41. The fastener 54 and the gasket 51 transmit the vibration of the inner liner 3 to the elastic sleeve 53, and the elastic and friction properties of the elastic sleeve 53 are used to absorb the vibration energy. The sound-absorbing cotton disperses and absorbs the impact force transmitted by the inner liner 3, and at the same time absorbs the resonance noise generated between the metal wheel cover 1 and the inner liner 3. The elastic cotton and the damping mechanism 5 cooperate to hinder the transmission of vibration and noise between the inner liner 3 and the metal wheel cover 1.

[0044] The technical features of the above-described embodiments can be combined in any manner. For brevity, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0045] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A rear wheel cover shock-absorbing and noise-reducing structure, characterized in that, The rear wheel cover shock-absorbing and noise-reducing structure comprises a metal wheel cover, an inner lining, soundproof cotton and a damping mechanism. The inner lining is arranged on the metal wheel cover through a threaded connector. The damping mechanism is arranged between the metal wheel cover and the inner lining. The soundproof cotton fills the gap between the metal wheel cover and the inner lining. The metal wheel cover is provided with a protrusion; the damping mechanism comprises a sleeve and an elastic sleeve arranged in the sleeve; the elastic sleeve is sleeved on the protrusion, and the length of the elastic sleeve extends out of the sleeve at both ends; the metal wheel cover and the inner lining contact the elastic sleeve; the metal wheel cover and the inner lining indirectly contact the sleeve through the elastic sleeve.

2. The rear wheel house damping and noise reducing structure of claim 1, wherein: First elastic members are arranged on the threaded connectors between the metal wheel cover and the inner lining; first elastic members are also arranged on the threaded connectors on the side of the inner lining away from the metal wheel cover.

3. The rear wheel house damping and noise reducing structure of claim 1, wherein: The sleeve is provided with an extension part extending in the circumferential direction; a fastener is arranged on the inner lining and passes through the extension part.

4. The rear wheel house damping and noise reducing structure of claim 3, wherein: Second elastic members are arranged on the fasteners between the metal wheel cover and the extension part; second elastic members are also arranged on the fasteners between the inner lining and the extension part.

5. The rear wheel house damping and noise reducing structure of claim 3, wherein: A waist-shaped hole is arranged on the extension part.

6. The rear wheel house damping and noise reducing structure of claim 3, wherein: The extension part is provided with at least two; the two extension parts are uniformly arranged around the sleeve.

7. The rear wheel house damping and noise reducing structure of claim 1, wherein: The part of the elastic sleeve extending out of the sleeve is circumferentially extended to form a damping pad; the upper damping pad is clamped by the sleeve and the metal wheel cover; the lower damping pad is clamped by the sleeve and the inner lining.

8. The rear wheel house damping and noise reducing structure of claim 7, wherein: A notch is arranged on the damping pad.

9. The rear wheel house damping and noise reducing structure of claim 1, wherein: A gasket is arranged between the metal wheel cover and the elastic sleeve; a gasket is also arranged between the inner lining and the elastic sleeve; a protrusion is arranged on the gasket to clasp the elastic sleeve.

10. The rear wheel house damping and noise reducing structure of claim 1, wherein: The diameter of the sleeve gradually decreases in the direction from the inner lining to the metal wheel cover.

Images