Positioning structure and wheel

Abstract

The utility model provides a positioning structure and a wheel, and relates to the technical field of mechanical connection. The positioning structures are applied to a first to-be-fixed part and a second to-be-fixed part, the first to-be-fixed part is assembled on the second to-be-fixed part in a nut clamping and bolt fixing mode, and the positioning structures are evenly distributed along the inner circumference of the first to-be-fixed part. The number and the relative positions of the positioning structures are in one-to-one correspondence with the hole sites in the first to-be-fixed part and the second to-be-fixed part; the positioning structure comprises an annular cavity, a buckle, a limiting rib and a supporting rib; the multiple buckles are annularly and evenly distributed on the edge of the annular cavity and face the inner side of the annular cavity. And the buckle is configured to lock the first to-be-fixed part on the inclined surface of the nut through the pre-tightening force generated by the interference magnitude of the reverse buckling surface. Through the combined design of the annular cavity, the buckles, the limiting ribs and the supporting ribs, the structural strength of the whole positioning structure is improved, the positioning structure can bear larger external force, and structural deformation or damage caused by uneven stress is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical connection, and in particular to a positioning structure and a wheel. Background Art

[0002] In the fields of mechanical engineering and structural design, the positioning and secure fixation of fixtures are key factors in ensuring the stability and reliability of mechanical equipment. With the advancement of industrial automation and precision manufacturing technology, the requirements for the accuracy and stability of fixture connections are becoming increasingly stringent. Traditional fixture connection methods, such as bolting, welding, or bonding, while able to achieve a certain degree of fixation, have limitations in certain application scenarios. For example, these traditional methods may no longer be applicable when rapid assembly and disassembly, frequent adjustments, or operations in confined spaces are required.

[0003] The wheel center cap is a decorative element used to cover the wheel rim. With an outer diameter typically ranging from 140-250mm, the wheel center cap is prominently positioned on the vehicle's exterior, making it a crucial exterior decorative feature. Currently, wheel caps come in a variety of shapes and designs, each boasting a sophisticated appearance. Installing them enhances the overall vehicle's styling, adding a touch of elegance and character. Wheel center caps are often front-mounted, securing the cap to the wheel hub nut with a snap-on design. This aesthetically pleasing feature also protects the wheel hub bolts from rust and water. In real-world applications, the cap must be removed first if the tire needs to be removed. However, the current cap retaining mechanism has a small amount of deformation, making installation difficult. Utility Model Content

[0004] In view of this, the purpose of an embodiment of the present application is to provide a positioning structure, which is applied to a first part to be fixed and a second part to be fixed. The first part to be fixed is assembled on the second part to be fixed by nut clamping and bolt fixing, so as to improve the problem in the prior art that the positioning structure clamping foot has small deformation and is difficult to install.

[0005] The positioning structures are evenly distributed along the inner circumference of the first part to be fixed; the number and relative positions of the positioning structures correspond one-to-one to the hole positions on the first part to be fixed and the second part to be fixed;

[0006] The positioning structure includes: an annular cavity, a clip, a limiting rib and a supporting rib; a plurality of the clips are evenly distributed in a ring shape on the edge of the annular cavity and face the inner side of the annular cavity; the clip is configured to lock the first part to be fixed on the inclined surface of the nut through the pre-tightening force generated by the interference of the undercut surface.

[0007] In the above implementation process, the positioning structures are evenly distributed along the inner circumference of the first part to be fixed, so that the fixing part is evenly stressed during the fixing process, reducing stress concentration or loose fixation caused by uneven distribution. The number of positioning structures and their relative positions need to correspond one-to-one to the hole positions on the first part to be fixed and the second part to be fixed, so that during the assembly process, each positioning structure can be aligned with the corresponding hole position. The positioning structure includes an annular cavity, a buckle, a limiting rib and a supporting rib. The annular cavity provides a space so that the buckles can be evenly distributed on its edge. A plurality of buckles are evenly distributed on the edge of the annular cavity and face the inner side of the annular cavity. These buckles lock the first part to be fixed on the inclined surface of the nut through the interference pre-tightening force generated by the undercut surface. The limiting rib is used to limit the movement of the fixing part (nut and bolt) during the fixing process. The supporting rib provides additional support for the positioning structure and enhances its structural stability.

[0008] Optionally, the limiting ribs and the buckles are staggered and distributed on the edge of the annular cavity; the limiting ribs face the inside of the annular cavity and are evenly distributed in a ring shape on the inside of the annular cavity.

[0009] In this implementation, the staggered distribution of the limiting ribs and the snaps around the edge of the annular cavity increases the rigidity of the annular cavity edge and improves the load-bearing capacity of the entire positioning structure. Furthermore, the limiting ribs face inward and are evenly distributed in a circular pattern within the annular cavity, providing all-around restraint on the nut and reducing its displacement in any direction.

[0010] Optionally, the limiting rib is configured to limit the position of two or three of the first direction, second direction and third direction of the nut; the first direction points to the center of gravity of the first part to be fixed; the first direction and the third direction are a set of orthogonal directions on the annular surface of the annular cavity; the second direction is the direction of the central axis of the annular cavity.

[0011] In the above implementation, the design of the limiting ribs enables the nut to be positioned in two or three directions: a first direction (toward the center of gravity of the first component to be fixed), a second direction (toward the central axis of the annular cavity), and a third direction (orthogonal to the first direction). This multi-directional positioning function enhances the stability of the nut and reduces displacement when subjected to force. The first and third directions form a set of orthogonal directions on the annular surface of the annular cavity, providing stability in two perpendicular planes.

[0012] Optionally, the limiting rib includes: a first supporting portion, a second supporting portion and a third supporting portion;

[0013] The first support portion is used to limit the position of the nut in the first direction and / or the third direction; the second support portion is used to limit the position of the nut in the second direction; the third support portion is used to limit the position of the nut in the third direction; the first support portion is located above the second support portion; the third support portion is an arc-shaped surface extending from the end of the second support portion.

[0014] In the above implementation process, the first support portion is responsible for limiting the position of the nut in the first direction (pointing to the center of gravity of the first part to be fixed) and / or the third direction (a direction orthogonal to the first direction). This design can reduce the movement or rotation of the nut in these two directions. The second support portion is specifically used to limit the position of the nut in the second direction (the direction of the central axis of the annular cavity) so that the nut is correctly aligned along the central axis. The third support portion limits the position of the nut in the third direction and increases the support capacity of the nut by extending the arc surface. At the same time, the first support portion is located above the second support portion, and the third support portion serves as an arc surface extending from the end of the second support portion. This layout optimizes space utilization, so that the three support portions can be compactly arranged at the edge of the annular cavity without affecting their respective functions.

[0015] Optionally, the limiting rib cooperates with the buckle to limit the position of the nut in the annular cavity, and the bolt fixes and assembles the first to-be-fixed part and the second to-be-fixed part through the nut.

[0016] In the above implementation, the bolt first secures the second part to be fixed via the nut, and then the first part to be fixed is installed on the second part to be fixed, which has already been fixed with the nut. The retaining ribs work in conjunction with the buckle. The bolt passes through the nut, and the preload generated by the undercut surface of the buckle securely locks the first part to be fixed to the inclined surface of the nut. The retaining ribs, through their supporting structure, restrict the movement of the nut in three main directions, reducing the possibility of nut deviation, allowing the bolt to pass smoothly through the nut and complete the fixed assembly of the first and second parts to be fixed.

[0017] Optionally, the support rib is configured to provide support force to the buckle and the limiting rib, and the support rib includes: a first support rib and a second support rib; the first support rib is connected to the outside of the buckle and the surface of the first part to be fixed; the second support rib is connected to the outside of the limiting rib and the surface of the first part to be fixed.

[0018] In the above implementation, the support ribs are configured to provide support for the buckle and retaining ribs, helping to distribute and absorb the forces acting on them, reducing deformation or damage caused by these forces, especially when subjected to repeated assembly and disassembly or external forces. In dynamic working environments, the support ribs can reduce wear on the buckle and retaining ribs due to vibration. By providing stable support, the support ribs help reduce unnecessary vibration, thereby extending the service life of the components.

[0019] Optionally, the buckle is adjacent to a buckle slot; the buckle slot is located between the limiting rib and the buckle; and the buckle slot is used to control the deformation of the buckle.

[0020] In the above implementation process, the design of the buckle adjacent to the buckle groove enables the nut to move flexibly in the annular cavity in a dynamic working environment while being restrained. The force is more evenly distributed, and the reliability is higher when meeting the requirements of disassembly force, drop test, etc.

[0021] Optionally, the first part to be fixed is a wheel center cap, and the second part to be fixed is a wheel hub.

[0022] In the above implementation process, the wheel center cap is assembled on the wheel hub through the above positioning structure, so that the fixing part is evenly stressed during the fixing process, avoiding stress concentration or loose fixation due to uneven distribution.

[0023] An embodiment of the present application also provides a wheel, which includes a wheel hub, a wheel center cover and the positioning structure provided by the first aspect of the present application.

[0024] In this implementation, a retaining structure secures the wheel center cap to the hub, allowing for quick and stable assembly while preventing the cap from loosening due to vibration or impact during driving. The retaining structure, comprising an annular cavity, a clip, retaining ribs, and supporting ribs, ensures the wheel's long-term reliability. Even in adverse road and weather conditions, the retaining structure maintains its functionality, reducing maintenance costs.

[0025] Optionally, a plurality of the positioning structures are evenly distributed in a ring shape on the wheel center cover and are used to fixedly connect the wheel center cover and the wheel hub.

[0026] In this implementation, the evenly distributed positioning structures in a circular pattern ensure uniform force distribution on the wheel center cap on the hub, minimizing deformation or damage to the cap due to uneven force distribution. The use of multiple positioning structures provides multiple fixing points, enhancing the stability of the connection between the wheel center cap and the hub, maintaining stability even at high speeds or in adverse road conditions. During high-speed wheel rotation, the evenly distributed positioning structures prevent the cap from loosening or falling off due to centrifugal force, thereby improving wheel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the position of a positioning mechanism provided in an embodiment of the present application;

[0029] Figure 2 A structural diagram of a positioning mechanism in an embodiment provided in the present application;

[0030] Figure 3 A partial cross-sectional view of a nut clamp provided in an embodiment of the present application;

[0031] Figure 4 A nut and bolt assembly diagram provided for an embodiment of the present application;

[0032] Figure 5 A nut parts diagram provided for an embodiment of the present application;

[0033] Figure 6 Bolt parts diagram provided for the embodiment of this application;

[0034] Figure 7 A schematic diagram of a wheel provided in an embodiment of the present application;

[0035] Figure 8 A schematic diagram of a wheel center cover provided in an embodiment of the present application.

[0036] Icons: 100-first part to be fixed; 200-second part to be fixed; 300-positioning structure; 310-annular cavity; 320-clip; 331-first support portion; 332-second support portion; 333-third support portion; 341-first support rib; 342-second support rib; 350-clip groove; 400-nut; 500-bolt; 600-wheel; 610-hub; 620-wheel center cover. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0038] The embodiment of the present application provides a positioning structure 300 applied to a first part to be fixed 100 and a second part to be fixed 200. The first part to be fixed 100 is assembled on the second part to be fixed 200 by means of a nut 400 for clamping and a bolt 500 for fixing.

[0039] Optionally, see Figure 1 , Figure 1 A schematic diagram of the position of a positioning mechanism provided in an embodiment of the present application.

[0040] The positioning structures 300 are evenly distributed along the inner circumference of the first component to be fixed 100 ; the number and relative positions of the positioning structures 300 correspond one-to-one to the hole positions on the first component to be fixed 100 and the second component to be fixed 200 .

[0041] In the above implementation, the positioning structures 300 are evenly distributed along the inner circumference of the first component to be fixed 100, ensuring uniform force distribution during the fixing process and reducing stress concentration or loose fixation caused by uneven distribution. The number and relative positions of the positioning structures 300 must correspond one-to-one with the holes in the first component to be fixed 100 and the second component to be fixed 200, ensuring that each positioning structure 300 is aligned with the corresponding hole during assembly.

[0042] Optionally, the first and second components to be fixed 100, 200 may be any two elements that need to be fixed by fasteners (e.g., screws or bolts); the first and second components to be fixed 100, 200, or the first and second components to be fixed 100, 200 plus other components may constitute an integrated assembly. Specifically, the first component to be fixed 100 may be, but is not limited to, a wheel center cap, a seat armrest, or a ship propeller; correspondingly, the second component to be fixed 200 may be, but is not limited to, a wheel hub, a seat frame, or a ship propeller shaft.

[0043] Specifically, see Figure 2 , Figure 2 This is a structural diagram of a positioning mechanism in an embodiment provided in the present application.

[0044] The positioning structure 300 includes: an annular cavity 310, a clip 320, a limiting rib and a supporting rib; multiple clips 320 are evenly distributed in a ring shape on the edge of the annular cavity 310 and face the inside of the annular cavity 310; the clip 320 is configured to lock the first part to be fixed 100 on the inclined surface of the nut 400 through the pre-tightening force generated by the interference of the undercut surface.

[0045] In the above implementation process, the positioning structure 300 includes an annular cavity 310, a clip 320, a limiting rib and a supporting rib. The annular cavity 310 provides a space so that the clips 320 can be evenly distributed on its edge. A plurality of clips 320 are evenly distributed on the edge of the annular cavity 310 and face the inner side of the annular cavity 310. These clips 320 lock the first part to be fixed 100 on the inclined surface of the nut 400 through the interference pre-tightening force generated by the undercut surface. The limiting rib is used to limit the movement of the fixing parts (nut 400 and bolt 500) during the fixing process. The supporting rib provides additional support for the positioning structure 300 and enhances its structural stability.

[0046] In one embodiment of the present application, twelve clips 320 are used, evenly distributed around the edge of the annular cavity 310. Each clip 320 is spaced 30 degrees apart, ensuring coverage of the entire edge of the annular cavity 310 and providing uniform preload. Increasing the number of clips and reducing their angular distribution significantly increases the preload, allowing the first fastener 100 to be more securely locked onto the inclined surface of the nut 400. This is suitable for applications requiring high stability and load-bearing capacity.

[0047] In one embodiment of the present application, eight clips 320 are used, evenly distributed around the edge of the annular cavity 310. Each clip 320 is spaced 45 degrees apart, providing sufficient preload while maintaining ease of disassembly. This optimal number and angled distribution of clips ensures sufficient fastening strength while easing disassembly, making it suitable for scenarios requiring frequent disassembly and maintenance.

[0048] In one embodiment of the present application, six clips 320 are evenly distributed around the edge of the annular cavity 310. Each clip 320 is spaced 60 degrees apart, providing a basic secure fit while ensuring easy disassembly. The reduced number of clips and wide distribution angles make disassembly much simpler and faster, making it suitable for applications requiring rapid replacement or maintenance.

[0049] Optionally, the limiting ribs and the buckles 320 are staggeredly distributed on the edge of the annular cavity 310 ; the limiting ribs face the inside of the annular cavity 310 and are evenly distributed in a ring shape inside the annular cavity 310 .

[0050] In the above implementation, the staggered distribution of the limiting ribs and the buckles 320 around the edge of the annular cavity 310 increases the rigidity of the edge of the annular cavity 310 and improves the load-bearing capacity of the entire positioning structure 300. Furthermore, the limiting ribs face inward of the annular cavity 310 and are evenly distributed in an annular pattern within the annular cavity 310, providing all-around restraint on the nut 400 and reducing its displacement in any direction.

[0051] In one embodiment of the present application, it is assumed that the edge of the annular cavity 310 can be divided into 12 equally divided areas, each representing a possible installation position. Within these areas, a limiting rib is installed in every other area, for example, limiting ribs are installed in areas 1, 3, 5, 7, 9, and 11. Clips 320 are installed in the remaining areas, namely areas 2, 4, 6, 8, 10, and 12. In this way, the clips 320 and limiting ribs are evenly distributed along the inner edge of the annular cavity 310. Specifically, each limiting rib is next to a clip 320, and vice versa. This staggered arrangement ensures that there is at least one limiting rib and one clip 320 at any position within the annular cavity 310, providing all-round restraint and support. This staggered distribution of the limiting ribs and clips 320 also ensures their uniform distribution within the annular cavity 310, with each limiting rib and clip 320 being equidistantly distributed along the circumference of the annular cavity 310.

[0052] Optionally, the limiting rib is configured to limit the position of two or three of the first direction, the second direction and the third direction of the nut 400; the first direction points to the center of gravity of the first part to be fixed 100; the first direction and the third direction are a set of orthogonal directions on the annular surface of the annular cavity 310; the second direction is the direction of the central axis of the annular cavity 310.

[0053] In the above implementation, the design of the limiting ribs enables the nut 400 to be positioned in two or three directions: a first direction (toward the center of gravity of the first component 100 to be fixed), a second direction (toward the central axis of the annular cavity 310), and a third direction (orthogonal to the first direction). This multi-directional positioning function enhances the stability of the nut 400 and reduces displacement when subjected to force. The first and third directions form a pair of orthogonal directions on the annular surface of the annular cavity 310, providing stability in two perpendicular planes.

[0054] In one embodiment of the present application, the first direction is a radial direction pointing toward the wheel hub, i.e., a linear direction extending outward from the center of the wheel hub, to reduce radial movement of the decorative cover on the wheel hub. The second direction is a tangential direction pointing toward the wheel hub, i.e., a circumferential direction along the edge of the wheel hub, to reduce tangential movement of the decorative cover on the wheel hub. The third direction is a direction perpendicular to the plane of the wheel hub, i.e., an axial direction of the wheel hub, to reduce axial movement of the decorative cover on the wheel hub.

[0055] Optionally, the support ribs (first support rib 341 and second support rib 342) are configured to provide support force to the buckle 320 and the limiting rib, and the support ribs include: first support rib 341 and second support rib 342; the first support rib 341 is connected to the outside of the buckle 320 and the surface of the first part to be fixed 100; the second support rib 342 is connected to the outside of the limiting rib and the surface of the first part to be fixed 100.

[0056] In the above implementation, the support ribs are configured to provide support to the buckle 320 and the retaining ribs, helping to distribute and absorb the forces acting on them, reducing deformation or damage caused by these forces, particularly during repeated assembly and disassembly or external forces. In dynamic operating environments, the support ribs can reduce wear on the buckle 320 and retaining ribs due to vibration. By providing stable support, the support ribs help reduce unwanted vibration, thereby extending the service life of the components.

[0057] Optionally, the buckle 320 is adjacent to the buckle groove 350 ; the buckle groove 350 is located between the limiting rib and the buckle 320 ; the buckle groove 350 is used to control the deformation of the buckle 320 .

[0058] In the above implementation, the design of the buckle 320 adjacent to the buckle groove 350 enables the nut 400 to move flexibly within the annular cavity 310 in a dynamic working environment while being restrained. This allows for more uniform force distribution and greater reliability in testing requirements such as disassembly force and drop tests.

[0059] In one embodiment of the present application, the first fixed component 100 is a wheel center cap, and the second fixed component 200 is a wheel hub. Five positioning structures are evenly distributed at 72° about the center cap's rotational center. Each positioning structure comprises four clips 320 and four annular retaining ribs, forming a circular ring around the wheel nut. The four evenly distributed clips 320 secure the cap with the inclined surface of the hub nut, while the four evenly distributed annular retaining ribs position the cap. Finally, the bottom support ribs support the hub nut. The preload generated by the interference fit of the clips 320 undercuts locks the wheel center cap onto the inclined surface of the hub nut, while ensuring the locking force is concentric with the wheel's rotational center. The bottom support ribs of the wheel center cap support the bottom surface of the hub nut, while the annular retaining ribs position the sidewalls of the hub nut. Together, the support and retaining ribs restrict the cap's six degrees of freedom in three directions, forming a more secure and reliable structural system in conjunction with the clips and undercuts.

[0060] Optionally, combine Figure 2 , see Figure 3 and Figure 4 .in, Figure 3 This is a partial cross-sectional view of the nut 400 provided in the embodiment of the present application. Figure 4This is the assembly diagram of the nut 400 and bolt 500 provided in the embodiment of the present application. Figure 5 The nut 400 part diagram provided in the embodiment of the present application is as follows: Figure 6 The bolt 500 part diagram provided in the embodiment of the present application further illustrates the use of the positioning structure 300.

[0061] Optionally, the limiting rib includes: a first supporting portion 331 , a second supporting portion 332 and a third supporting portion 333 .

[0062] The first support portion 331 is used to limit the position of the nut 400 in the first direction and / or the third direction; the second support portion 332 is used to limit the position of the nut 400 in the second direction; the third support portion 333 is used to limit the position of the nut 400 in the third direction; the first support portion 331 is located above the second support portion 332; the third support portion 333 is an arc-shaped surface extending from the end of the second support portion 332.

[0063] In the above implementation process, the first support portion 331 is responsible for limiting the position of the nut 400 in the first direction (pointing to the center of gravity of the first part to be fixed 100) and / or the third direction (a direction orthogonal to the first direction), thereby reducing the movement or rotation of the nut 400 in these two directions. The second support portion 332 is specifically used to limit the position of the nut 400 in the second direction (the direction of the central axis of the annular cavity 310), so that the nut 400 is correctly aligned along the central axis. The third support portion 333 limits the position of the nut 400 in the third direction and increases the support capacity of the nut 400 by extending the arc surface. At the same time, the first support portion 331 is located above the second support portion 332, and the third support portion 333 serves as an arc surface extending from the end of the second support portion 332. This layout optimizes space utilization, allowing the three support portions to be compactly arranged at the edge of the annular cavity 310 without affecting their respective functions.

[0064] The limiting rib cooperates with the buckle 320 to limit the position of the nut 400 in the annular cavity 310 , and the bolt 500 fixes and assembles the first to-be-fixed component 100 and the second to-be-fixed component 200 through the nut 400 .

[0065] In the above implementation process, the bolt 500 first secures the second part 200 to be secured via the nut 400. The first part 100 is then installed onto the second part 200, which is already secured with the nut 400. The retaining ribs work in conjunction with the buckle 320. The bolt 500 passes through the nut 400, and the preload force generated by the undercut surface of the buckle 320 securely locks the first part 100 to the inclined surface of the nut 400. The retaining ribs, through their supporting structure, restrict the movement of the nut in three primary directions, reducing the possibility of nut 400 deflection. This allows the bolt 500 to pass smoothly through the nut 400 and complete the fixed assembly of the first part 100 and the second part 200.

[0066] Optionally, one or more gaskets (e.g., washers) are introduced between the nut 400 and the first part to be fixed 100, or between the nut 400 and the second part to be fixed 200, or between the nut 400 and the positioning structure 300. These gaskets can be made of materials such as metal, plastic, or rubber, and the choice of specific material depends on the application scenario and the required friction coefficient. The gasket can be single-layer or multi-layer, depending on the required friction and buffering effect. If multi-layer gaskets are used, each layer of gaskets can be made of the same material or different materials to meet different needs. The gasket can be fixed between the nut and the part to be fixed in a variety of ways, such as by bonding, snapping, or a specific fixing structure. By adding gaskets, the slippage of the nut 400 when under force is reduced, and the reliability of the fixed assembly is improved.

[0067] Optionally, the first part to be fixed 100 is a wheel center cap 620 , and the second part to be fixed 200 is a wheel hub 610 of a wheel 600 .

[0068] In the above implementation process, the wheel center cap 620 is assembled on the wheel hub 610 of the wheel 600 through the above positioning structure 300, so that the fixing parts are evenly stressed during the fixing process, avoiding stress concentration or loose fixation due to uneven distribution.

[0069] See also Figure 7 , Figure 7 A schematic diagram of a wheel 600 provided in an embodiment of the present application.

[0070] The embodiment of the present application further provides a wheel 600 , which includes a hub 610 , a wheel center cap 620 , and a positioning structure 300 .

[0071] In the above implementation, the positioning structure 300 is used to secure the wheel center cap 620 to the wheel hub 610, allowing for quick and stable assembly while preventing the cap from loosening due to vibration or impact during vehicle operation. The positioning structure 300 comprises an annular cavity 310, a snap 320, retaining ribs, and supporting ribs. The durability of the positioning structure 300 ensures the reliability of the wheel 600 during long-term use. Even in adverse road and weather conditions, the positioning structure 300 maintains its functionality, reducing maintenance costs.

[0072] Optionally, see Figure 8 , Figure 8 A schematic diagram of a wheel center cap 620 provided in an embodiment of the present application.

[0073] The plurality of positioning structures 300 are evenly distributed in a ring shape on the wheel center cap 620 and are used to fix the wheel center cap 620 and the wheel hub 610 .

[0074] In the above implementation, the evenly distributed positioning structures 300 in a circular pattern ensure that the wheel center cap 620 is evenly stressed on the wheel hub 610, reducing deformation or damage to the cap due to uneven stress. The use of multiple positioning structures 300 provides multiple fixing points, enhancing the stability of the connection between the wheel center cap 620 and the wheel hub 610, maintaining stability even at high speeds or in adverse road conditions. When the wheel 600 rotates at high speeds, the evenly distributed positioning structures 300 reduce the chance of the cap loosening or falling off due to centrifugal force, thereby improving the safety of the wheel 600.

[0075] In summary, when the tire is traveling at high speed or encountering bumpy roads, safety is a crucial consideration in the development of the wheel center cover. In order to reduce the situation of the wheel center cover falling or slipping, the strength of the buckle is particularly critical. The positioning structure provided by the present application breaks the disadvantage of insufficient rigidity that is common in traditional fully surrounded positioning structures. Traditional fully surrounded positioning structures are limited by the product in the mold. The higher the strength requirement of the positioning structure, the more difficult the mold injection molding is. The positioning structure provided by the present application is easier to demold than the fully surrounded one, and the mold cost is low. The positioning structure mentioned in the present application for the wheel center cover contacts the inclined surface of the hub nut in the form of a composite buckle, and the support ribs at the bottom of the cover support the hub nut. During the driving process of the tire, the present application has better impact resistance to prevent slipping, flying and injuring other vehicles or pedestrians.

[0076] In the several embodiments provided in this application, it should be understood that the disclosed devices may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the block diagrams in the accompanying drawings illustrate possible architectures, functions, and operations of devices according to various embodiments of this application.

[0077] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0078] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

Claims

1. A positioning structure, applied to a first part to be fixed and a second part to be fixed, wherein the first part to be fixed is assembled on the second part to be fixed by means of nut clamping and bolt fixing, characterized in that: The positioning structures are evenly distributed along the inner circumference of the first part to be fixed; the number and relative positions of the positioning structures correspond one-to-one to the hole positions on the first part to be fixed and the second part to be fixed; The positioning structure includes: an annular cavity, a buckle, a limiting rib and a supporting rib; The plurality of clips are evenly distributed in a ring shape on the edge of the annular cavity and face the inner side of the annular cavity; the clips are configured to lock the first part to be fixed on the inclined surface of the nut through the pre-tightening force generated by the interference of the undercut surface.

2. The structure according to claim 1, characterized in that The limiting ribs and the buckles are staggered and distributed on the edge of the annular cavity; the limiting ribs face the inner side of the annular cavity and are evenly distributed in a ring shape inside the annular cavity.

3. The structure according to claim 1, characterized in that The limiting rib is configured to limit the position of the nut in two or three of the first direction, the second direction and the third direction; The first direction points to the center of gravity of the first part to be fixed; the first direction and the third direction are a set of orthogonal directions on the annular surface of the annular cavity; and the second direction is the central axis direction of the annular cavity.

4. The structure according to claim 3, characterized in that The limiting rib includes: a first supporting portion, a second supporting portion and a third supporting portion; The first support portion is used to limit the position of the nut in the first direction and / or the third direction; the second support portion is used to limit the position of the nut in the second direction; the third support portion is used to limit the position of the nut in the third direction; the first support portion is located above the second support portion; the third support portion is an arc-shaped surface extending from the end of the second support portion.

5. The structure according to claim 4, characterized in that The limiting rib cooperates with the buckle to limit the position of the nut in the annular cavity, and the bolt fixes and assembles the first to-be-fixed part and the second to-be-fixed part through the nut.

6. The structure according to claim 1, characterized in that The support ribs are configured to provide support force to the buckle and the limiting ribs, and the support ribs include: a first support rib and a second support rib; The first supporting rib is connected to the outer side of the buckle and the surface of the first part to be fixed; the second supporting rib is connected to the outer side of the limiting rib and the surface of the first part to be fixed.

7. The structure according to claim 1, characterized in that The buckle is adjacent to the buckle groove; the buckle groove is located between the limiting rib and the buckle; and the buckle groove is used to control the deformation of the buckle.

8. The structure according to claim 1, characterized in that The first part to be fixed is a wheel center cap, and the second part to be fixed is a wheel hub.

9. A wheel, characterized in that: The wheel comprises a wheel hub, a wheel center cap and the positioning structure according to any one of claims 1 to 8.

10. The wheel according to claim 9, characterized in that A plurality of positioning structures are evenly distributed on the wheel center cover in a ring shape and are used to fix the wheel center cover and the wheel hub.

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