Carbon fiber automobile hub

Abstract

The utility model provides a carbon fiber automobile hub which comprises a rim and a spoke which are made of a carbon fiber material, the spoke is connected to the inner side of the rim, and a hollow mounting seat is formed in the center of the spoke; the fixing piece is embedded in the mounting seat, and the fixing piece is a metal piece or a metal alloy piece; the elastic piece is embedded in the fixing piece and elastically abuts against the inner wall face of the mounting base. According to the carbon fiber automobile hub provided by the invention, the elastic body is additionally arranged while the fixing part made of the metal material or the metal alloy material is additionally arranged in the mounting base in the center of the spoke, the elastic body is embedded into the fixing part, and the elastic body elastically abuts against the inner wall face of the mounting base, so that excessive driving torsion generated when the hub moves can be absorbed; the physical performance of the carbon fiber hub is improved, the stability of the carbon fiber hub is improved, and the service life of the hub can be greatly prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile parts, and more particularly to a carbon fiber automobile wheel hub. BACKGROUND

[0002] The automobile wheel hub is an essential part in the production and processing of the whole vehicle, which generally comprises a rim and spokes. At the center of the spokes and the lock of the disc brake, the product is prone to breakage due to excessive force, resulting in damage to the wheel hub and shortening the service life of the product. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide a carbon fiber automobile wheel hub with greatly improved service life.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is to provide a carbon fiber automobile wheel hub, comprising:

[0005] The rim and spokes made of carbon fiber material, the spoke is connected to the inner side of the rim, and the center of the spoke forms a hollow mounting seat;

[0006] The fixing member is embedded in the mounting seat, and the fixing member is a metal member or a metal alloy member;

[0007] The elastic member is embedded on the fixing member and elastically abuts against the inner wall surface of the mounting seat.

[0008] In one embodiment, the elastic member is made of polyurethane or polymethacrylimide foam material.

[0009] In one embodiment, the front surface of the fixing member is provided with a clamping groove, one side of the elastic member is embedded in the clamping groove, and the other side of the elastic member elastically abuts against the inner wall surface of the mounting seat.

[0010] In one embodiment, the middle part of the fixing member is provided with an axle mounting hole matched with the axle, the fixing member is disc-shaped, the front surface of the fixing member is provided with an annular groove, a plurality of connecting parts are uniformly arranged in the inner circumference of the annular groove, the clamping groove is formed between the two adjacent connecting parts in the annular groove, the connecting part is axially provided with a connecting hole, and the front surface of the mounting seat is respectively provided with a through hole corresponding to each connecting hole; the elastic member comprises an annular base and a plurality of clamping blocks uniformly arranged in the inner circumferential wall of the base, one end of the clamping block is adapted to be clamped into the clamping groove, and the elastic member forms an avoiding groove between the two adjacent clamping blocks.

[0011] In one embodiment, the connecting hole is a stepped hole, the hole wall of the through hole extends axially to form a reinforcing wall, and the reinforcing wall abuts against the stepped surface of the connecting hole through the avoiding groove.

[0012] In one embodiment, the front surface of the fixing member has an axially protruding annular boss, and an outer peripheral wall of the annular boss is formed with an annular step, and a peripheral edge of the clamping block extends outwardly and is formed with a supporting surface, and a portion of the supporting surface abuts against the annular step.

[0013] In one embodiment, the back surface of the fixing member is provided with a hollow positioning portion, a hole wall of the connecting hole extends to the positioning portion, and a bottom wall of the mounting seat is provided with a positioning hole corresponding to the position of the positioning portion.

[0014] In one embodiment, the inner peripheral wall of the rim is provided with a protruding ring, the spoke includes a fixing ring and a plurality of spokes integrally formed by carbon fibers, one end of each of the spokes is connected to the fixing ring, the other end of each of the spokes collectively encloses the mounting seat, and a bolt passes through the protruding ring and is connected to the fixing ring to lock the spoke to the rim.

[0015] In one embodiment, the fixing ring is internally provided with a metal ring, a bottom wall of the fixing ring is annularly and spacedly provided with a plurality of threaded holes, one end of the threaded hole extends to the metal ring, the fixing ring abuts against the front surface of the protruding ring, and a bolt passes through the protruding ring and is connected to the threaded hole of the fixing ring.

[0016] In one embodiment, the spoke is a hollow structure, one end of the spoke is connected to the top wall of the fixing ring, and the spoke is curved away from the bottom wall of the fixing ring.

[0017] The carbon fiber automobile wheel hub provided by the present application has the beneficial effects that: compared with the prior art, the carbon fiber automobile wheel hub provided by the present application increases a fixing member made of metal or metal alloy material in the mounting seat at the center of the spoke, increases an elastic body, embeds the elastic body in the fixing member, and elastically abuts the inner wall surface of the mounting seat, so as to absorb excess driving torque generated by the wheel hub during movement, improve the physical performance of the carbon fiber wheel hub, improve the stability of the carbon fiber wheel hub, and greatly improve the service life of the wheel hub. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The drawings provided by the embodiments of the present application are perspective views of the carbon fiber automobile wheel hub;

[0020] Figure 2 The drawings provided by the embodiments of the present application are perspective views of the carbon fiber automobile wheel hub;Figure 1 Another perspective view of the carbon fiber automobile wheel hub shown in FIG. 1;

[0021] Figure 3 FIG. 1 shows an exploded view of the carbon fiber automobile wheel hub shown in FIG. 1; Figure 1

[0022] Figure 4 FIG. 1 shows a perspective view of the spoke shown in FIG. 1; Figure 1

[0023] Figure 5 FIG. 1 shows a top view of the spoke shown in FIG. 1; Figure 4

[0024] Figure 6 FIG. 1 shows a sectional view along the direction AA shown in FIG. 1; Figure 5

[0025] Figure 7 FIG. 1 shows an assembly schematic view of the fixing member and the elastic member;

[0026] Figure 8 Figure 7 FIG. 1 shows a perspective view of the fixing member shown in FIG. 1;

[0027] Figure 9 Figure 8 FIG. 1 shows another perspective view of the fixing member shown in FIG. 1;

[0028] Figure 10 Figure 7 FIG. 1 shows a perspective view of the elastic member shown in FIG. 1;

[0029] Figure 11 Figure 10 FIG. 1 shows another perspective view of the elastic member shown in FIG. 1;

[0030] Figure 12 Figure 1 FIG. 1 shows a radial fatigue test table of the carbon fiber automobile wheel hub shown in FIG. 1.

[0031] In the drawings:

[0032] 10 - wheel rim; 20 - spoke; 30 - fixing member; 40 - elastic member; 50 - decorative cover; 110 - convex ring; 111 - annular gasket; 21 - mounting seat; 22 - fixing ring; 23 - spoke; 24 - metal ring; 210 - through hole; 211 - reinforcing wall; 212 - positioning hole; 301 - axle mounting hole; 31 - annular groove; 310 - clamping groove; 32 - connecting portion; 320 - connecting hole; 33 - annular boss; 330 - annular step; 34 - positioning portion; 41 - base; 42 - clamping block; 43 - avoiding groove; 420 - support surface. DETAILED DESCRIPTION

[0033] ​​​​​​​​​In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0037] Please refer to Figures 1 to 4 , the carbon fiber automobile hub provided by the embodiment of the present application will be described. The carbon fiber automobile hub comprises a rim 10, a spoke 20, a fixing member 30 and an elastic member 40. The rim 10 and the spoke 20 are integrally formed by carbon fiber, the spoke 20 is connected to the inner side of the rim 10, the center of the spoke 20 forms a hollow mounting seat 21, and the two ends of the mounting seat 21 are open in the axial direction. The fixing member 30 and the elastic member 40 are both embedded in the mounting seat 21. The fixing member 30 is a metal member or a metal alloy member, which can be but is not limited to an aluminum member or an aluminum alloy member, and can also be made of other metal materials with smaller density and lower cost. The elastic member 40 is embedded on the fixing member 30, and elastically abuts against the inner wall surface of the mounting seat 21. That is to say, the fixing member 30 made of metal or metal alloy is added at the center position of the spoke 20, and an elastic body is also added, which is integrated with the fixing member 30 after installation and is embedded in the spoke 20 together. In this way, the structural strength of the center of the spoke 20 is improved, and the excess torsion generated during the movement of the hub can be absorbed, so that the stability of the hub is greatly improved and the service life is prolonged.

[0038] Specifically, the fixing member 30 and the elastic member 40 can be made first, the elastic member 40 is embedded in the fixing member 30, and then the fixing member 30 with the embedded elastic member 40 is placed in a predetermined position of a mold when the spoke 20 is formed. After the spoke 20 is formed, the fixing member 30 and the elastic member 40 are fixed in the mounting seat 21 at the center of the spoke 20. Finally, the entire spoke 20 is connected and installed on the rim 10, which is simple to make and low in cost.

[0039] The carbon fiber automobile hub provided in the application increases the fixing member 30 of metal or metal alloy material in the mounting seat 21 at the center of the spoke 20, and increases the elastic body, which is embedded in the fixing member 30 and elastically abuts against the inner wall surface of the mounting seat 21. In this way, the excess driving torque generated by the hub during movement can be absorbed, the physical performance of the carbon fiber hub is improved, the stability of the carbon fiber hub is improved, and the service life of the hub can be greatly improved.

[0040] Specifically, the elastic member 40 can be made of polyurethane or polymethacrylimide foam material. Polyurethane (PU) has the characteristics of high density, high strength, high toughness, and high wear resistance. Specifically, polyurethane foam plastic has excellent elasticity, elongation, compression strength, softness, and good chemical stability. It also has excellent processability, adhesion, and thermal insulation properties, and is a good cushioning material. In addition, polyurethane foam plastic also has excellent processability, adhesion, and thermal insulation properties, and is a good cushioning material. Polymethacrylimide foam, also known as PMI foam, is a cross-linked hard structure foam material with 100% closed cell structure. Its uniform cross-linked cell wall structure makes it have outstanding structural stability and excellent mechanical properties. PMI foam has excellent mechanical properties, high specific strength, and high specific modulus, is suitable for machining of various complex shapes, and is an environmentally friendly material. It has excellent heat resistance, heat distortion temperature of 180-240 degrees, high compression strength, corrosion resistance, and aging resistance, and can meet the requirements of medium and high temperature, high pressure curing and prepreg process. The elastic member 40 is injection molded by another mold, and after completion of the production, it is embedded in the fixing member 30.

[0041] Please refer to Figures 5 to 8 The front surface of the fixing member 30 is provided with a clamping groove 310, one side of the elastic member 40 is embedded in the clamping groove 310, and the other side of the elastic member 40 elastically abuts against the inner wall surface of the mounting seat 21. That is, the elastic member 40 is clamped on the fixing member 30, and the elastic member 40 is clamped between the fixing member 30 and the mounting seat 21. In this way, a buffer is provided for the center of the spoke 20, so as to achieve the purpose of absorbing the excess driving torque generated by the hub during movement.

[0042] Please refer to Figures 6 to 11The middle part of the fixing member 30 is provided with an axle mounting hole 301 which is adapted to match the axle for mounting. The fixing member 30 is in the shape of a disc, and the front surface of the fixing member 30 is provided with an annular groove 31 at the periphery. A plurality of connecting portions 32 are uniformly and circumferentially arranged in the annular groove 31, and a clamping groove 310 is formed between two adjacent connecting portions 32 in the annular groove 31. Each connecting portion 32 is provided with a connecting hole 320 in the axial direction. That is, the annular groove 31 is recessed at the periphery of the front surface of the fixing member 30, and a plurality of clamping grooves 310 are uniformly arranged in the circumferential direction in the annular groove 31. The corresponding portions of the elastic member 40 are clamped into the clamping grooves 310. The front surface of the mounting seat 21 is provided with a through hole 210 at the position corresponding to each connecting hole 320. The fixing member 30 is assembled with the axle by means of a bolt passing through the connecting hole 320. The axis of each connecting hole 320 is parallel to the axis of the middle axle mounting hole 301.

[0043] The elastic member 40 comprises a base 41 and a plurality of clamping blocks 42. The base 41 is in the shape of a ring, and the outer diameter of the base 41 is substantially equal to the maximum outer diameter of the fixing member 30. The plurality of clamping blocks 42 are uniformly and circumferentially arranged on the inner circumferential wall of the base 41. One end of each clamping block 42 of the elastic member 40 is adapted to the clamping groove 310 of the fixing member 30. Each clamping block 42 corresponds to a clamping groove 310 in position, and one end of the clamping block 42 is clamped into the corresponding clamping groove 310. The elastic member 40 forms an avoiding groove 43 between two adjacent clamping blocks 42. Figure 1 、 Figure 4 As shown in the drawings, the connecting hole 320 is provided with six connecting holes, and the spoke 23 is provided with nine spokes. Correspondingly, the clamping blocks 42 on the elastic member 40 are also provided with six clamping blocks.

[0044] Referring to Figure 4 and Figure 8 、 Figure 10 The connecting hole 320 on the fixing member 30 is a stepped hole, and the hole wall of the through hole 210 on the front surface of the mounting seat 21 extends axially to form a reinforcing wall 211. The reinforcing wall 211 passes through the avoiding groove 43 of the elastic member 40 and abuts against the stepped surface of the connecting hole 320, that is, the reinforcing wall 211 is inserted into the connecting hole 320, so that the fixing member 30 is positioned and embedded in the mounting seat 21, and the elastic member 40 is clamped between the fixing member 30 and the mounting seat 21 to absorb the excess torsion when the hub moves.

[0045] Please refer to Figure 7 、 Figure 8 、 Figure 10 and Figure 11The front surface of the fixing member 30 has an axially extending annular boss 33, the annular boss 33 is axially provided with an axle mounting hole 301, the side wall of the clamping groove 310 away from the annular boss 33 is an arc-shaped wall, and the connection between the groove bottom of the clamping groove 310 and the annular boss 33 is a smooth transition. The outer peripheral wall of the annular boss 33 is formed with an annular step 330, and the periphery of the clamping block 42 on the elastic member 40 is outwardly extended to form a supporting surface 420, part of the supporting surface 420 abuts against the annular step 330, and the remaining part of the supporting surface 420 abuts against the end surface of the connecting portion 32.

[0046] Referring to Figure 2 , Figure 4 , Figure 8 and Figure 9 , the back surface of the fixing member 30 is provided with a hollow positioning portion 34, the hole wall of the connecting hole 320 extends to the positioning portion 34, and the bottom wall of the mounting seat 21 is provided with a positioning hole 212 corresponding to the position of the positioning portion 34, which is matched with the positioning portion 34. That is, the positioning portion 34 is a hollow structure, the connecting hole 320 and the positioning portion 34 are coaxially arranged, the hole wall of the positioning portion 34 and the hole wall of the connecting hole 320 are integrated, and the outer diameter of the positioning portion 34 and the hole diameter of the positioning hole 212 of the mounting seat 21 are matched. In this way, the positioning portion 34 and the positioning hole 212 form a positioning and mounting structure, which further improves the convenience of the positioning and mounting operation of the fixing member 30. The bottom surface of the positioning portion 34 is flush or substantially flush with the bottom surface of the outside of the mounting seat 21, that is, the positioning portion 34 does not protrude out of the mounting seat 21.

[0047] Referring to Figures 1 to 4 and Figure 6 , the inner peripheral wall of the rim 10 is provided with a protruding ring 110, the wheel spoke 20 includes a fixing ring 22 and a plurality of spokes 23 which are integrally formed by carbon fibers, and the included angle between adjacent two spokes 23 is equal. One end of the spoke 23 is connected with the fixing ring 22, and the other end of each spoke 23 jointly surrounds the mounting seat 21, and the bolt passes through the protruding ring 110 and is connected with the fixing ring 22 to lock the wheel spoke 20 to the rim 10.

[0048] The fixing ring 22 is internally provided with a metal ring 24, the bottom wall of the fixing ring 22 is annularly spaced apart to be provided with a plurality of threaded holes, one end of the threaded hole extends to the metal ring 24, the fixing ring 22 abuts against the front surface of the convex ring 110, the bolt passes through the convex ring 110 and is connected with the threaded hole of the fixing ring 22, the threaded hole penetrates through the metal ring 24 but not all penetrates through the fixing ring 22. That is, the metal ring 24 is placed in advance at a predetermined position in the mold cavity, the carbon fiber prepreg is injected in the mold cavity, and after molding, the metal ring 24 is formed outside a ring-shaped fixing ring 22, and the remaining carbon fiber prepreg forms the mounting seat 21 between the spokes 23 and the wheel spoke 20. Specifically, the side of the convex ring 110 away from the fixing ring 22 is provided with an annular gasket 111, the bolt is screwed with the fixing ring 22 after passing through the annular gasket 111 and the convex ring 110, the bolt directly locks the carbon fiber wheel spoke 20, and then locks the carbon fiber wheel spoke 20 and the wheel rim 10, thereby saving the nut, avoiding the situation that the nut is exposed, improving the overall aesthetics of the product, and improving the durability of the screw thread by internally embedding the metal ring 24.

[0049] Please refer to Figure 1 、 Figure 2 、 Figure 6 , the spoke 23 is a hollow structure, and the bottom thereof is a hollow structure. In this way, the weight of the wheel spoke 20 is smaller after molding, so that the product can be further lightened. One end of the spoke 23 is connected to the top wall of the fixing ring 22, the spoke 23 is bent away from the bottom wall of the fixing ring 22, the bending degree of the end of the spoke 23 close to the fixing ring 22 is larger, and the bending degree of the end of the spoke 23 away from the fixing ring 22 is smaller.

[0050] Please refer to Figures 1 to 3 , the hub is also provided with a decorative cover 50, the back surface of the decorative cover 50 is annularly and uniformly spaced apart to be provided with a plurality of clamping feet, the clamping feet are buckled with the fixing part 30, the front surface of the decorative cover 50 is basically flush with the plane near the front surface of the mounting seat 21, and the front surface of the decorative cover 50 can be provided with a car logo or other logo.

[0051] The fatigue loader is used to load the wheel, so that the radial fatigue stress is generated, the fatigue life and hardness of the wheel under different loads and driving distances are tested. In the experiment, the hub is fixed on the testing machine through the bearing, the radial fatigue stress is generated on the wheel through the loading of the loader at the circumferential position, the load load cycle is formed through the cyclic loading, and continuous detection and recording are carried out. Figure 12 The carbon fiber hub wheel described in the above embodiment is tested by using the fatigue loader, and the test results show that it perfectly passes the radial fatigue test.

[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A carbon fiber automotive wheel hub, characterized by: The application relates to a rim and spoke made of carbon fiber material, the spoke is connected to the inner side of the rim, the center of the spoke is provided with a hollow mounting seat; A fixing member is embedded in the mounting seat, the fixing member is a metal member or a metal alloy member; An elastic member is embedded on the fixing member and elastically abuts against the inner wall surface of the mounting seat. The elastic member is made of polyurethane or polymethacrylimide foam material.

2. The carbon fiber automotive wheel hub of claim 1, wherein: The front surface of the fixing member is provided with a clamping groove, one side of the elastic member is embedded in the clamping groove, and the other side of the elastic member elastically abuts against the inner wall surface of the mounting seat.

3. The carbon fiber automotive wheel hub of claim 1, wherein: The middle part of the fixing member is provided with an axle mounting hole matched with an axle, the fixing member is disc-shaped, the front surface of the fixing member is provided with an annular groove, a plurality of connecting parts are uniformly arranged in the inner circumference of the annular groove, the clamping groove is formed between two adjacent connecting parts in the annular groove, the connecting part is axially provided with a connecting hole, and the front surface of the mounting seat is respectively provided with a through hole corresponding to the position of each connecting hole; the elastic member comprises an annular base and a plurality of clamping blocks uniformly arranged in the inner circumferential wall of the base, one end of the clamping block is adapted to be clamped into the clamping groove, and the elastic member forms an avoiding groove between two adjacent clamping blocks.

4. The carbon fiber automotive wheel hub of claim 3, wherein: The connecting hole is a stepped hole, the hole wall of the through hole extends axially to form a reinforcing wall, and the reinforcing wall abuts against the stepped surface of the connecting hole through the avoiding groove.

5. The carbon fiber automotive wheel of claim 4, wherein: The front surface of the fixing member has an annular boss protruding axially, the outer circumferential wall of the annular boss is provided with an annular step, the circumferential edge of the clamping block extends outward to form a supporting surface, and part of the supporting surface abuts against the annular step.

6. The carbon fiber automotive wheel of claim 4, wherein: The back surface of the fixing member is provided with a hollow positioning part, the hole wall of the connecting hole extends to the positioning part, and the bottom wall of the mounting seat is provided with a positioning hole matched with the positioning part at the position corresponding to the positioning part.

7. The carbon fiber automotive wheel hub of claim 4, wherein: The inner circumferential wall of the rim is provided with a convex ring, the spoke comprises a fixing ring and a plurality of spokes which are integrally formed by carbon fiber, one end of each spoke is connected with the fixing ring, the other end of each spoke jointly encloses the mounting seat, a bolt passes through the convex ring and is connected with the fixing ring to lock the spoke to the rim.

8. The carbon fiber automotive wheel of any of claims 1-7, wherein: The fixing ring is provided with a metal ring, the bottom wall of the fixing ring is annularly and interval provided with a plurality of threaded holes, one end of the threaded hole extends to the metal ring, the fixing ring abuts against the front surface of the convex ring, and a bolt passes through the convex ring and is connected with the threaded hole of the fixing ring.

9. The carbon fiber automotive wheel of claim 8, wherein: The spoke is a hollow structure, one end of the spoke is connected to the top wall of the fixing ring, and the spoke is bent away from the side of the bottom wall of the fixing ring.

10. The carbon fiber automotive wheel hub of claim 8, wherein: ​

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