Wheel and vehicle

Abstract

The utility model relates to the technical field of automobiles, in particular to a wheel and a vehicle. The wheel comprises a rim, a center wheel disc and at least 25 spokes connected with the rim and the center wheel disc, the at least 25 spokes are distributed in the circumferential direction of the rim at equal intervals, and the size of the junction of the spokes and the center wheel disc in the axial direction is larger than 37 mm. In this way, the wheel can have low mass, high lateral rigidity and high bearing capacity at the same time.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a wheel and a vehicle. Background Art

[0002] Modern cars pursue performance such as light weight, maneuverability, comfort and economy, and the wheels of cars have a certain impact on these performances of cars. Using wheels with lightweight materials, lower mass, higher lateral stiffness and load-bearing capacity in cars can effectively reduce the unsprung weight, improve the maneuverability and economy of the whole vehicle, and improve the noise, vibration and acoustic roughness performance (ie, NVH performance) of the vehicle during operation, thereby meeting the extreme pursuit of these performances by modern cars. Therefore, it is urgent to provide a wheel with low mass, high lateral stiffness and high load-bearing capacity. Utility Model Content

[0003] Based on this, the present application provides a wheel and a vehicle to achieve lightweight wheels, high lateral stiffness and high load-bearing capacity.

[0004] In a first aspect, the present application provides a wheel, comprising a rim, a center wheel disc, and at least 25 spokes connecting the rim and the center wheel disc, wherein the at least 25 spokes are evenly spaced along the circumference of the rim, wherein a dimension in an axial direction at a junction between the spokes and the center wheel disc is greater than or equal to a first value.

[0005] Based on the above scheme, the wheel has at least 25 spokes, and by controlling the size of the junction between the spokes and the center wheel disc, not only can the load-bearing capacity of the wheel be guaranteed, making the wheel beautiful and unique in shape, but also the lateral stiffness can be effectively improved.

[0006] In a possible implementation, the first value ranges from 35 mm to 39 mm.

[0007] Exemplarily, the first value may be 35 mm, 37 mm or 39 mm, etc. In this way, the dimension of the junction between the spoke and the center wheel disc is set thicker, which can improve the lateral rigidity of the wheel.

[0008] In a possible implementation, within a first cross section perpendicular to the axial direction, a size of the spoke in the circumferential direction gradually changes along the radial direction.

[0009] In a possible implementation, in a radial cross section, the inner cavity wall of the rim, the inner cavity wall of the spoke, and the inner cavity wall of the center wheel disc are sequentially connected to form a smooth back cavity line. In this way, a smooth transition is achieved between the rim, the spoke, and the center wheel disc, which can avoid stress concentration and improve the radial support strength of the wheel.

[0010] In a possible implementation, the end portion where the rim is connected to the spoke is recessed in a direction away from the center of the shaft to form a groove, and the outer wall of the groove facing away from the center of the shaft is a tire bead seat.

[0011] In a possible implementation, the size of the bead seat in the radial direction is greater than or equal to 8 mm. In this way, the weight of the wheel can be reduced while ensuring impact strength and fatigue durability.

[0012] In a possible implementation, the spoke includes a first portion, a second portion, and a third portion distributed in the radial direction, the first portion is connected to the rim, and the third portion is connected to the center wheel disc; the dimension of the junction between the first portion and the rim in the axial direction is less than or equal to 24 mm, the dimension of the junction between the first portion and the second portion in the axial direction is less than or equal to 24 mm, and the dimension of the junction between the second portion and the third portion in the axial direction is less than or equal to 34 mm. It can be understood that by locally thinning the spokes and the center wheel disc, it is helpful to reduce the mass of the wheel.

[0013] In a possible implementation, the first part has a first size in the axial direction, the size of the second part in the axial direction gradually changes along the radial direction, and the size of the third part in the axial direction gradually changes along the radial direction. In this way, the sizes of each part can be smoothly transitioned to avoid stress concentration.

[0014] In a possible implementation, the size of the center wheel disc in the axial direction is larger than the size of the junction between the center wheel disc and the spokes in the axial direction, and the size of the center wheel disc in the axial direction is less than or equal to 47 mm.

[0015] In a possible implementation, the distance from the junction of the spoke and the center wheel disc to the axis of the center wheel disc is a first distance, the distance from the bead seat to the axis of the center wheel disc is a second distance, and the ratio between the first distance and the second distance is 1 / 3 to 1 / 2.

[0016] In a possible implementation, the first distance is 110 mm to 115 mm, and the second distance is 256 mm to 269 mm.

[0017] In a possible implementation, the rim, the spokes and the center wheel disc are forged in one piece.

[0018] In a possible implementation, the material of the rim, the spokes and the center wheel disc is aluminum alloy.

[0019] In a second aspect, the present application provides a vehicle comprising the wheel of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a wheel structure provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 The cross-sectional view in the AA direction is shown;

[0022] Figure 3 for Figure 1 The cross-sectional view along the BB direction is shown;

[0023] Description of reference numerals:

[0024] 1- rim; 1a- groove; 11- undercut; 12- bead seat; 2- spokes; 20- spoke edge contour line; 21- first part; 22- second part; 23- third part; 3- center wheel disc; 31- fourth part; 32- fifth part; 4- bolt hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The wheel provided in the embodiment of the present application can refer to Figure 1 , Figure 1 This is a schematic plan view of a wheel provided in an embodiment of the present application. Figure 1 As shown, the wheel includes a rim 1, a center wheel disc 3, and at least 25 spokes 2 connecting the rim 1 and the center wheel disc 3, for example, Figure 1 30 spokes 2 are taken as an example.

[0027] It should be noted that the profile of the rim 1 is generally circular, so the circumferential direction illustrated in the present application represents the circumferential direction of the rim 1. The axial center of the wheel is the axial center of the center wheel disc 3, and the rim 1, the spokes 2 and the center wheel disc 3 all rotate around an axis passing through the axial center. The axial direction mentioned in the present application may refer to the extension direction of the axis. The radial direction mentioned in the present application may refer to the direction from the axial center of the center wheel disc 3 to the rim 1. The first section perpendicular to the axial direction mentioned in the present application may refer to Figure 1 The plane shown.

[0028] In some embodiments, the rim 1, the spokes 2 and the center wheel disc 3 can be integrally forged. Specifically, the rim 1, the spokes 2 and the center wheel disc 3 can be integrally forged using a lightweight, high-strength material to achieve the purpose of lightweighting the wheel. The lightweight, high-strength material includes but is not limited to aluminum alloy, titanium alloy, magnesium alloy, etc.

[0029] Continue to refer to Figure 1 , 30 spokes 2 can be evenly spaced along the circumferential direction, and there is a hollow area between two adjacent spokes 2. It can be understood that as the number of spokes 2 increases, on the one hand, it helps to improve the load-bearing capacity of the wheel, and on the other hand, makes the wheel shape more beautiful and distinctive.

[0030] exist Figure 1 In the plane shown, the edge contour line 20 of the spoke 2 is shown. Figure 1 As shown, the size of the spoke 2 in the circumferential direction gradually changes. For example, it gradually increases in the radial direction and then gradually decreases. For another example, it gradually increases in the radial direction, that is, the width of the spoke 2 is the smallest near the center wheel disc 3 and the largest near the rim 1. The present application does not limit the way of increasing or decreasing, for example, it can increase or decrease linearly or nonlinearly.

[0031] Furthermore, in some embodiments, a certain gap is left between adjacent spokes 2 at the junctions between the spokes 2 and the center wheel disc 3 and at the junctions between the spokes 2 and the rim 1 to meet processing requirements.

[0032] It can be understood that during the manufacturing process of the wheel, the spoke 2 has a certain draft angle so that the spoke 2 can be smoothly separated from the mold. Therefore, in some embodiments, the size of the spoke 2 in the circumferential direction can gradually increase along the axial direction. Figure 1 The edge contour line 20 of the wheel spoke 2 is shown in bold to indicate that the wheel spoke 2 may have different circumferential dimensions in different radial cross sections.

[0033] It can be understood that since the spokes 2 have the above-mentioned shape and there is a certain space between each spoke 2 and the adjacent spokes, the number of spokes 2 can be designed according to actual needs. The embodiment of the present application can realize an ultra-multi-spoke wheel with at least 25 spokes.

[0034] Continue to refer to Figure 1 In some embodiments, the center wheel disc 3 has a plurality of bolt holes 4 distributed at equal intervals, for example, Figure 1 5 bolt holes 4 are taken as an example. It can be understood that the bolt holes 4 are mainly used to realize the installation of the wheel and the cooperation with other parts.

[0035] The wheel provided in the embodiment of the present application can achieve an aesthetically pleasing and distinctive multi-spoke wheel shape through fine turning and painting.

[0036] Combine the following Figure 2 and Figure 3 The wheel provided in the embodiment of the present application is further described. Figure 2 For along Figure 1 Cross-sectional view along the AA radial direction. Figure 3 For along Figure 1 Cross-section view of the BB in the radial direction.

[0037] like Figure 2As shown, on a radial cross section (eg, cross section AA), the inner cavity wall of the rim 1, the inner cavity wall of the spoke 2, and the inner cavity wall of the center wheel disc 3 are sequentially connected to form a smooth back cavity line.

[0038] The end of the rim 1 connected to the spoke 2 is recessed away from the axis center to form a groove 1a. The bottom of the groove 1a, that is, the inner wall facing the axis center, is an undercut 11, and the outer wall of the groove 1a facing away from the axis center is a bead seat 12.

[0039] In the radial direction, the spoke 2 may include a first portion 21, a second portion 22 and a third portion 23, wherein the first portion 21 is connected to the rim 1, and the third portion 23 is connected to the center wheel disc 3. The center wheel disc 3 may include a fourth portion 31 and a fifth portion 32, wherein the fourth portion 31 is connected to the third portion 23 of the spoke 2.

[0040] In some embodiments, reducing the radial dimension of the bead seat 12 can reduce the weight of the wheel while ensuring the impact strength and fatigue durability. For example, the minimum radial dimension of the bead seat 12 can be 8 mm.

[0041] It should be noted that due to errors in the manufacturing process, the specific numerical values ​​mentioned in this application are allowed to fluctuate up and down. For example, for each specific numerical value, any fluctuation within the range of ±1 to 2 mm falls within the protection scope of this application and will not be repeated below.

[0042] In some embodiments, the spokes 2 and the center wheel disc 3 are partially thinned, so that the weight of the wheel can be significantly reduced. For example, the sizes of the first portion 21, the second portion 22 and the fifth portion 32 in the axial direction are reduced.

[0043] Specifically, the dimension d1 of the junction between the first portion 21 of the spoke 2 and the rim 1 in the axial direction is less than or equal to 24 mm. The dimension d2 of the junction between the first portion 21 and the second portion 22 in the axial direction is less than or equal to 24 mm. The dimension d1 and the dimension d2 may be the same or different. The dimension d3 of the junction between the second portion 22 and the third portion 23 in the axial direction is less than or equal to 34 mm.

[0044] In some embodiments, along the radial direction, the size of each part of the first portion 21 in the axial direction is the same. For example, the size of the first portion 21 in the axial direction may be d1 / d2 (an example of the first size of the present application).

[0045] In some embodiments, the dimension of the second portion 22 in the axial direction gradually changes along the radial direction, that is, the second portion 22 gradually transitions from dimension d2 to dimension d3.

[0046] In some embodiments, the dimension of the third portion 23 in the axial direction gradually changes along the radial direction, that is, the third portion 23 gradually transitions from dimension d3 to dimension d4, so that the dimensions of each portion can smoothly transition to avoid stress concentration.

[0047] In some embodiments, the dimensions of the third portion 23 of the spoke 2 and the fourth portion 31 of the center wheel disc 3 in the axial direction are thickened, so that the lateral rigidity of the wheel can be significantly improved.

[0048] Specifically, under the premise of meeting the space layout boundary of the brake caliper, the dimension d4 in the axial direction of the junction between the spoke 2 and the center wheel disc 3, that is, the junction between the third part 23 and the fourth part 31 is greater than or equal to 37 mm. Figure 3 As shown, the junction of the spoke 2 and the central wheel disc 3 may refer to the area where the central wheel disc 3 and the spoke 2 overlap in axial projection (such as Figure 3 The area P) shown in the dotted line box is the place with the maximum radius from the center of the axis, where the maximum radius from the center of the axis can refer to d6 shown in the figure. Or, refer to Figure 1 As shown, the junction between the spokes 2 and the center wheel disc 3 may also refer to the connection between the spokes 2 and the edge of the center wheel disc 3 away from the center of the shaft in the radial direction.

[0049] The dimension d5 of the center wheel disc 3 in the axial direction, that is, the dimension of the junction of the fourth portion 31 and the fifth portion 32 of the center wheel disc 3 in the axial direction, is greater than the dimension d4 of the junction of the spoke 2 and the center wheel disc 3 in the axial direction. For example, d5 may be less than or equal to 47 mm.

[0050] It is understandable that the junctions between the rim 1, the spokes 2 and the center wheel disc 3 need to be smoothly transitioned using arcs to increase the strength of the connection structure of each part and reduce wind resistance.

[0051] In some embodiments, reference Figure 1 The proportion of the center wheel disc 3 to the entire vehicle should not be too large. For example, the radius of the center wheel disc 3 accounts for 1 / 3 to 1 / 2 of the radius of the rim 1. In this way, the size of the center wheel disc 3 is not too large relative to the entire wheel, which makes the wheel look bulky, thereby ensuring the beautiful shape of the wheel provided in the embodiment of the present application.

[0052] Specifically, Figure 3 As shown, on a radial section (e.g., section BB), the distance d6 from the upper edge 30 of the center wheel disc 3 (i.e., the junction of the spoke 2 and the center wheel disc 3) to the axis of the center wheel disc 3 (i.e., the radius of the center wheel disc 3) can be 110 mm to 115 mm, and the distance from the bead seat 12 at the end of the rim 1 to the axis of the center wheel disc 3 (i.e., the radius of the rim 1) can be 256 mm to 269 mm.

[0053] In summary, the wheel provided in the embodiment of the present application can be made of lightweight materials and has at least 25 spokes. By engineering control of the size of the back cavity line of the wheel, the wheel mass can be effectively reduced and the lateral stiffness can be improved, which can not only ensure the load-bearing capacity of the wheel, but also make the wheel beautiful and unique. That is, the wheel provided in the embodiment of the present application can simultaneously ensure lightweight, high lateral stiffness and high load-bearing capacity, and can increase the service life of the tire.

[0054] In addition, an embodiment of the present application also provides a vehicle, which uses the wheels of the above-mentioned embodiment to help reduce vehicle fuel consumption and achieve energy conservation and emission reduction.

[0055] It should be noted that, in the examples and description of the present application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0056] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present application.

Claims

1. A wheel, characterized in that: The wheel comprises a rim (1), a center wheel disc (3), and at least 25 spokes (2) connecting the rim (1) and the center wheel disc (3), wherein the at least 25 spokes (2) are distributed at equal intervals along the circumference of the rim (1), wherein: The dimension (d4) of the junction between the spokes (2) and the central wheel disc (3) in the axial direction is greater than or equal to a first value.

2. The wheel according to claim 1, characterized in that The first value ranges from 35 mm to 39 mm.

3. The wheel according to claim 1 or 2, characterized in that: In a first cross section perpendicular to the axial direction, the size of the spoke (2) in the circumferential direction gradually changes along the radial direction.

4. The wheel according to claim 1, characterized in that In a radial cross section, the inner cavity wall of the rim (1), the inner cavity wall of the spokes (2), and the inner cavity wall of the center wheel disc (3) are sequentially connected to form a smooth back cavity line.

5. The wheel according to claim 1 or 4, characterized in that: The end portion of the rim (1) connected to the spoke (2) is recessed in a direction away from the axis center to form a groove, and the outer wall of the groove facing away from the axis center is a tire bead seat.

6. The wheel according to claim 5, characterized in that The dimension of the bead seat in the radial direction is greater than or equal to 8 mm.

7. The wheel according to claim 6, characterized in that The spoke (2) comprises a first part, a second part and a third part distributed in the radial direction, the first part is connected to the rim (1), and the third part is connected to the central wheel disc (3); The dimension (d1) of the junction between the first part and the rim (1) in the axial direction is less than or equal to 24 mm, the dimension (d2) of the junction between the first part and the second part in the axial direction is less than or equal to 24 mm, and the dimension (d3) of the junction between the second part and the third part in the axial direction is less than or equal to 34 mm.

8. The wheel according to claim 7, characterized in that The first portion has a first size in the axial direction, the size of the second portion in the axial direction gradually changes along the radial direction, and the size of the third portion in the axial direction gradually changes along the radial direction.

9. A wheel according to claim 1, 6 or 7, characterized in that The dimension (d5) of the center wheel disc (3) in the axial direction is greater than the dimension (d4) of the junction between the center wheel disc (3) and the spoke (2) in the axial direction, and the dimension (d5) of the center wheel disc (3) in the axial direction is less than or equal to 47 mm.

10. The wheel according to claim 5, characterized in that The distance from the junction of the spoke (2) and the center wheel disc (3) to the axis of the center wheel disc (3) is a first distance (d6), and the distance from the bead seat (12) to the axis of the center wheel disc (3) is a second distance. The ratio between the first distance and the second distance is 1 / 3 to 1 / 2.

11. The wheel according to claim 10, characterized in that The first distance is 110 mm to 115 mm, and the second distance is 256 mm to 269 mm.

12. The wheel according to claim 1, characterized in that The wheel rim (1), the wheel spokes (2) and the center wheel disc (3) are integrally forged.

13. The wheel according to claim 1 or 12, characterized in that The materials of the rim (1), the spokes (2) and the central wheel disc (3) are aluminum alloy.

14. A vehicle, characterized in that: A wheel comprising the wheel described in any one of claims 1-13.

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