Lightweight high-rigidity noise reduction wheel

Abstract

The invention provides a light-weight high-rigidity noise reduction wheel which comprises a rim and a spoke, the rim and the spoke are connected with each other through welding to form the wheel, one end of the rim is connected with the spoke, the other end of the rim is bent downwards to form a turned edge, and a noise reduction cavity is formed between the rim and the spoke; the rigidity strength of the rim is larger than that of the spoke, and the rigidity strength of the rim is larger than that of the spoke. The weight of the spoke is smaller than that of the rim; the spoke is made of cast aluminum alloy A356, the rim is made of 6061 aluminum alloy, and according to the wheel, light weight of the wheel can be achieved, and meanwhile the rigidity of the wheel is high.

Description

Technical Field

[0001] The present invention relates to the technical field of wheels, and particularly to a lightweight, high-rigidity and noise-reducing wheel. Background Art

[0002] A wheel generally includes a rim and spokes. When the wheel is in use and rotates at high speed, vibrations will occur. Especially when the road surface and the tread are in uneven contact, wide-band vibrations of the tire are excited, resulting in resonance of the cavity system formed between the rim of the wheel and the inner surface of the wheel. Standing waves are formed in the cavity, which in turn causes the wheel to vibrate. As a result, the vibration energy is transmitted to the vehicle interior through the suspension system, generating interior noise and having a negative impact on the NVH performance of the entire vehicle. Therefore, the noise-reducing performance of the wheel has attracted much attention from R & D personnel.

[0003] For example, in the patent document with the Chinese patent application number CN202110148828.1 and the publication date of April 30, 2021, it discloses a lightweight noise-reducing wheel with an embedded acoustic structure, including a rim, spokes and a quarter-wavelength tube sound absorption assembly; the rim is an aluminum alloy plastic forming part, including a groove bottom wall, an inclined wall and a rim platform. One end of the groove bottom wall is connected to one end of the inclined wall and the other end is connected to one end of the rim platform; the spokes are aluminum alloy casting parts, and a first platform and a second platform with a spacing in the radial direction are provided on one side of the spokes; one end of the first platform is fixed to the groove bottom wall, and one end of the second platform is fixed to the other end of the rim platform. The inclined wall, the rim platform, the second platform, the part of the rim between the second platform and the first platform, and the first platform together define an annular cavity; the quarter-wavelength tube sound absorption assembly is arranged in the annular cavity to suppress the resonance noise of the tire cavity. It can effectively reduce the weight of the wheel, has good noise reduction effect, low cost, simple structure, convenient installation and good universality.

[0004] As the prior art of this document, in order to achieve the lightweight of the wheel, it chooses to replace materials and uses different materials to form the wheel. However, for lightweight materials, their own rigid strength is generally relatively low, and it does not consider how to ensure the overall rigidity setting of the wheel after using lightweight materials. Therefore, to finally achieve a lightweight wheel, either the rigidity is weak or the cost is higher. At the same time, when using a combination of multiple materials, the problem of the connection reliability between the two materials needs to be considered. If the connection between the two materials is unreliable, the rigidity of the connection part is likely to be poor. Summary of the Invention

[0005] The present invention provides a lightweight, high-rigidity and noise-reducing wheel, which can achieve the lightweight of the wheel while making the wheel have high rigidity.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a lightweight, high-rigidity, noise-reducing wheel, comprising a rim and spokes, the rim and the spokes are connected to each other by welding to form a wheel, one end of the rim is connected to the spokes, the other end of the rim is bent downward to form a curled edge, and a noise-reducing cavity is provided between the rim and the spokes; the rigidity strength of the rim is greater than the rigidity strength of the spokes, and the rigidity strength of the rim is greater than the rigidity strength of the spokes; the weight of the spokes is less than the weight of the rim; a first welding platform is provided at one end of the spoke close to the rim, and the bottom end of the rim is in abutment contact with the first welding platform; the first welding platform comprises a main body and a support body, the support body extends toward the other end of the rim and is in abutment contact with the bottom end of the rim, a support body is provided on one side of the main body protruding outwardly, a guide platform extending downward and outwardly is provided at one end of the support body away from the main body, and a guide block corresponding to the guide platform is provided at the bottom end of the rim.

[0007] The above arrangement ensures that the wheel can be lightweight by using the spokes made of lighter materials, while at the same time the rigidity of the entire wheel is ensured by using the relatively heavier rim. By setting materials of different weights, the wheel can be lightweight while ensuring sufficient rigidity. A curling edge is also provided at the other end of the rim, so that the edge of the other end of the rim is curled, so that the thickness of the rim is increased in the length direction, and the curling edge is subjected to upward and inward bending forces, thereby generating a force along the lateral direction of the rim, thereby further increasing the rigidity of the rim from the force, thereby improving the structural strength of the rim. At the same time, there is no need to increase the structural strength of the rim by increasing the thickness of the rim edge, which leads to complicated processing, thereby making the rigidity of the wheel better. At the same time, a guide platform is provided on the first welding platform, so that when the rim and the spoke are processed, the guide platform and the guide block can be used to facilitate the alignment of the rim with the spoke and better ensure the contact between the first welding platform and the bottom end of the rim, thereby facilitating welding.

[0008] Furthermore, a second welding platform is provided on the spoke above the first welding platform, and a bridge is provided on one end of the rim, one end of the bridge is connected to one end of the rim, and the other end of the bridge is connected to the second welding platform, forming a noise reduction cavity between the tower bridge and the first welding platform.

[0009] The above arrangement can achieve wheel noise reduction by providing a noise reduction cavity.

[0010] Furthermore, a welding platform corresponding to the bridge is provided on the second welding platform, and the other end of the bridge is connected to the welding platform by welding.

[0011] The above arrangement facilitates the welding of the bridge through the welding table.

[0012] Further, a cavity is formed between the other end of the rim and the curled edge.

[0013] With the above arrangement, since a cavity is formed between the other end of the rim and the curled edge, when the tire is placed into the wheel hub, the curled edge provides a buffer space when subjected to the extrusion force of the wheel, preventing damage to the other end of the rim by the tire and thus affecting the rigid strength of the rim.

[0014] Further, the welding table is arranged above the support body, the upper end surface of the support body abuts against the middle part of the bridging structure, and the support body, the bridging structure and the welding table form a noise reduction cavity.

[0015] With the above arrangement, while the support body supports the bridging structure, welding is carried out between the bridging structure and the welding table to form a noise reduction cavity, and the forming method is simple and reliable.

[0016] Further, the bridging structure includes a bridging main body, a concave cavity is formed downward in the middle of the bridging main body, the two side walls of the concave cavity are inclined outward and upward, and the bottom of the side wall of the concave cavity close to the first welding platform abuts against the support body.

[0017] With the above arrangement, the inclined side walls of the concave cavity can better guide the wrapped tire to enter, and in addition, the bottom of the inclined side walls is supported, without the need to increase the support contact surface of the bridging structure, and the support force is increased.

[0018] Further, the material of the wheel spoke is cast aluminum alloy A356; the tensile strength of the wheel spoke is 260 Mpa, the yield strength is 160 Mpa, the elongation strength is 7%, and the hardness is 85 HB; the material of the rim is 6061 aluminum alloy, the tensile strength of the rim is 310 Mpa, the yield strength is 260 Mpa, the elongation strength is 12%, and the hardness is 116 HB.

[0019] With the above arrangement, by determining the structural strength of the wheel spoke and the rim materials, the rigid strength of the rim is ensured to be greater than that of the wheel spoke.

[0020] Further, the calculation formula for the rigid strength of the wheel is:

[0021] where K is the rigid strength of the wheel, is the vibration frequency of the rim, is the vibration frequency of the wheel spoke, and M is the weight of the wheel.

[0022] With the above arrangement, the rigid strength of the wheel is calculated through the vibration frequencies of the rim and the wheel spoke, so as to determine that the rigid strength of the wheel is less than that of the rim and greater than that of the wheel spoke; the weight of the wheel spoke is less than that of the rim, thereby making the wheel lightweight while having sufficient rigidity. Brief Description of the Drawings

[0023] Figure 1 This is a schematic diagram of the connection structure between the rim and the spoke in Embodiment 1 of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the hub of the wheel of the present invention.

[0025] Figure 3 is Figure 1 The enlarged view at position A in Detailed implementation manners

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0027] As Figures 1-3 shown, a light and rigid hub includes a rim 1 and a spoke 2. The rim 1 and the spoke 2 are connected to each other by welding to form a wheel. One end of the rim 1 is connected to the spoke 2, and the other end of the rim 1 bends outward, upward, inward, and downward to form a curled edge 11. A noise reduction cavity 3 is provided between the rim 1 and the spoke 2. At one end of the spoke 2 close to the rim 1, there is a first welding platform 21, and the bottom end of the rim 1 abuts against the first welding platform 21. The first welding platform 21 includes a main body 211 and a support body 212. A support body 212 protrudes outward from one side of the main body 211. The support body 212 extends toward the other end of the rim 1 and abuts against the bottom end of the rim 1. At the end of the support body 212 away from the main body 211, there is a guiding platform 213 extending downward and outward, and a guiding block 10 corresponding to the guiding platform 213 is provided at the bottom end of the rim 1.

[0028] On the spoke 2 above the first welding platform 21, there is a second welding platform 22. On one end of the rim 1, there is a bridging 12. One end of the bridging 12 is connected to one end of the rim 1, and the other end of the bridging 12 is connected to the second welding platform 22. A noise reduction cavity 3 is formed between the bridging 12 and the first welding platform 22. By providing the noise reduction cavity 3, the noise reduction of the wheel can be realized.

[0029] On the second welding platform 22, there is a welding table corresponding to the bridging 12. The other end of the bridging 12 is connected to the welding table 23 by welding. The welding of the bridging is facilitated through the welding table 23.

[0030] A cavity 110 is formed between the other end of the rim 1 and the curled edge 11. Since a cavity is formed between the other end of the rim 1 and the curled edge 11, when the tire is placed into the hub, the curled edge 11 provides a buffer space when subjected to the extrusion force of the wheel, preventing the damage of the other end of the rim 1 by the tire and thus affecting the rigidity strength of the rim 1.

[0031] The other end of the rim 1 is inclined upward and outward. By making the other end of the rim 1 inclined upward and outward, the accommodating area at the other end of the rim 1 can be increased, and the rigidity strength of the rim 1 can be further improved.

[0032] The height of the step of the welding table 23 is set to match the thickness of one end of the bridging member 12. After the bridging member 12 is welded to the welding table 23, a flat surface can be formed to ensure that the welding table 23 and the bridging member 12 form a flat surface.

[0033] The first welding platform 21 further includes a main body 211 and a support body 212. A support body 212 protrudes outward from one side of the main body 211. The welding table 23 is arranged above the support body 212. The upper end surface of the support body 212 abuts against the middle part of the bridging member 12, and a noise reduction cavity 3 is formed by the support body 212, the bridging member 12 and the welding table 23. While the bridging member 12 is supported by the support body 212, a noise reduction cavity 3 is formed by welding the bridging member 12 and the welding table 23. The forming method is simple and reliable.

[0034] The bridging member 12 includes a bridging main body 121. A concave cavity 122 is formed downward in the middle of the bridging main body 121. The two side walls of the concave cavity 122 are inclined outward and upward. The bottom of the side wall of the concave cavity 122 close to the first welding platform 21 abuts against the support body 212. The inclined side walls of the concave cavity can better guide and allow the covered tire to enter. In addition, by supporting the bottom of the inclined side walls, it is not necessary to increase the supporting contact surface of the bridging member, and the supporting force can be increased.

[0035] In this embodiment, the material of the spoke 2 is cast aluminum alloy A356. The tensile strength of the spoke 2 is 260 Mpa, the yield strength is 160 Mpa, the elongation strength is 7%, and the hardness is 85 HB.

[0036] In this embodiment, the material of the rim 1 is 6061 aluminum alloy. The tensile strength of the rim 1 is 310 Mpa, the yield strength is 260 Mpa, the elongation strength is 12%, and the hardness is 116 HB.

[0037] By determining the structural strength of the materials of the spoke 2 and the rim 1, the rigidity strength of the rim 1 can be ensured to be greater than that of the spoke 2.

[0038] The calculation formula for the rigidity strength of the wheel is:

[0039] Among them, K is the rigidity strength of the wheel, is the vibration frequency of the rim, is the vibration frequency of the spoke, and M is the weight of the wheel. By calculating the rigidity of the wheel, it is determined that the rigidity of the wheel is less than the rigidity of the rim and greater than the rigidity of the spoke; the weight of the spoke is less than the weight of the rim, so that the wheel is lightweight and rigid enough.

[0040] The beneficial effects of the present invention are as follows: the wheel spokes made of lighter materials ensure that the wheel can be lightweight, while the relatively heavier rim ensures the overall rigidity of the wheel. By setting materials of different weights, the wheel can be lightweight while ensuring sufficient rigidity. A curling edge is also provided at the other end of the rim, so that the edge of the other end of the rim is curled, so that the thickness of the rim is increased in the length direction, and the curling edge is subjected to upward and inward bending forces, thereby generating a force along the lateral direction of the rim, thereby further increasing the rigidity of the rim from the force, thereby improving the structural strength of the rim, and at the same time, there is no need to increase the structural strength of the rim by increasing the thickness of the rim edge, which leads to complicated processing, thereby making the rigidity of the wheel better; at the same time, a guide platform is provided on the first welding platform, so that when the rim and the spokes are processed, the guide platform and the guide block can be used to facilitate the alignment of the rim with the spokes and better ensure that the first welding platform and the bottom end of the rim are in contact, thereby facilitating welding.

Claims

1. A lightweight, high-rigidity, noise-reducing wheel, characterized by: The invention comprises a rim and spokes, which are connected to each other by welding to form a wheel, one end of the rim is connected to the spokes, the other end of the rim is bent downward to form a curled edge, and a noise reduction cavity is provided between the rim and the spokes; the rigidity of the rim is greater than that of the spokes, and the rigidity of the rim is greater than that of the spokes; the weight of the spokes is less than the weight of the rim; a first welding platform is provided at one end of the spoke close to the rim, and the bottom end of the rim is in abutment with the first welding platform; the first welding platform comprises a main body and a supporting body, a supporting body is provided on one side of the main body protruding outward, the supporting body extends toward the other end of the rim and is in abutment with the bottom end of the rim, a guide platform extending downward and outward is provided at one end of the supporting body away from the main body, and a guide block corresponding to the guide platform is provided at the bottom end of the rim.

2. A lightweight, high-rigidity, noise-reducing wheel according to claim 1, characterized in that: A second welding platform is provided on the spoke above the first welding platform, a bridge is provided on one end of the rim, one end of the bridge is connected to one end of the rim, and the other end of the bridge is connected to the second welding platform, forming a noise reduction cavity between the tower bridge and the first welding platform.

3. The lightweight, high-rigidity, noise-reducing wheel according to claim 2, characterized in that: A welding platform corresponding to the bridge is provided on the second welding platform, and the other end of the bridge is connected to the welding platform by welding.

4. The lightweight, high-rigidity, noise-reducing wheel according to claim 1, characterized in that: A cavity is formed between the other end of the rim and the curled edge.

5. The lightweight, high-rigidity, noise-reducing wheel according to claim 3, characterized in that: The welding platform is arranged above the supporting body, the upper end surface of the supporting body abuts against the middle part of the bridge, and the supporting body, the bridge and the welding platform form a noise reduction cavity.

6. The lightweight, high-rigidity, noise-reducing wheel according to claim 5, characterized in that: The bridge comprises a bridge body, the middle of which forms a concave cavity downwards, and the two side walls of the concave cavity are inclined outwards and upwards, and the bottom of one side wall of the concave cavity close to the first welding platform abuts against the support body.

7. The lightweight, high-rigidity, noise-reducing wheel according to claim 1, characterized in that: The material of the spoke is cast aluminum alloy A356, the tensile strength of the spoke is 260Mpa, the yield strength is 160Mpa, the elongation strength is 7%, and the hardness is 85HB; The material of the rim is 6061 aluminum alloy; the rim has a tensile strength of 310 MPa, a yield strength of 260 MPa, an elongation strength of 12%, and a hardness of 116 HB.

8. The lightweight, high-rigidity, noise-reducing wheel according to claim 8, characterized in that: The calculation formula of the rigidity strength of the wheel is: Where K is the rigidity of the wheel, is the vibration frequency of the rim, is the vibration frequency of the spoke, and M is the weight of the wheel.

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