Split type carbon fiber spoke disc, hub, wheel and bicycle

Abstract

The invention relates to a split type carbon fiber spoke disc which comprises a disc body and a first mounting hole formed in the middle of the disc body, the inner wall of the first mounting hole is obliquely arranged, the section of the first mounting hole is non-circular, and the disc body is made of a carbon fiber material. A hub, a wheel and a bicycle are also disclosed. The spoke disc is made of the carbon fiber material, the overall weight of the spoke disc is obviously reduced compared with that of a traditional metal spoke disc, the overall weight of the hub can be reduced, and the strength of the hub can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of bicycles, and in particular to a split carbon fiber spoke disc, a hub, a wheel and a bicycle. Background Art

[0002] The bicycle wheel is a key component that converts the rider's pedaling into forward speed, and is usually composed of the central hub, spokes (or wheel spokes), and rim (or wheel rim). The hub is the core part of the wheel, and contains bearings to support and rotate the wheel; the hub shell is a pivotal component, and all the spokes are connected to the hub shell to achieve mutual force transmission and achieve a balanced state.

[0003] The hub is an important component on a bicycle wheel hub, which usually includes a spoke disc and a hub shell body. The spoke disc (also called a flange) is used to install the spokes, and the spoke disc is arranged on the hub shell body.

[0004] The main types of existing hubs are as follows:

[0005] 1. The hub shell and the spoke disc where the spokes are installed are made of metal as a whole. In order to support the transmission of force, the spoke disc is thicker and heavier, which is not conducive to the weight control of the hub.

[0006] 2. The existing known spoke mounting plate structure design separated from the hub shell body has also completed the separation of the spoke mounting plate from the hub shell body, but the existing structure of this type still needs to be bonded to the spokes and cannot be disassembled. If a spoke is damaged, the entire spoke mounting plate where it is located needs to be replaced, such as CN113942340B; or it requires the use of specially customized conjoined spokes, and it is difficult to obtain repair parts, such as CN219727734U.

[0007] The weight of all bicycle accessories, including the hub, is the rider's riding load. The lighter the weight, the better, provided that the strength of use is met. The hub is used as a mounting carrier for precision accessories such as bearings. The tension of the spokes will be transmitted to the hub shell body through the spoke disc, accelerating the fatigue deformation of the hub shell body and damaging the stability and service life of the entire hub. Therefore, a hub structure that can reduce the weight of the hub and improve the overall strength is urgently needed. Summary of the invention

[0008] The purpose of the invention is to provide a split carbon fiber spoke disc, a hub, a wheel and a bicycle, so as to overcome the dilemma that the existing bicycle hub cannot have both light weight and strength, and to achieve light weight while improving the overall strength of the hub.

[0009] To achieve the above-mentioned purpose, the invention discloses a split carbon fiber spoke disk, comprising: a disk body and a first mounting hole arranged in the middle of the disk body, the inner wall of the first mounting hole is inclined, the cross-sectional shape of the first mounting hole is non-circular, and the disk body is made of carbon fiber material.

[0010] Preferably, a docking portion is provided in the middle of the disk body, the first mounting hole is provided in the docking portion, and the docking portion protrudes from one side or both sides of the disk body; the cross-sectional shape of the first mounting hole is a polygon, or a shape formed by connecting multiple arc segments and straight line segments end to end.

[0011] Preferably, one end of the first mounting portion away from the disk body extends toward the docking portion to form a retaining ring.

[0012] Preferably, the side of the first mounting portion is provided with spoke mounting holes for mounting spokes, and the spoke mounting holes are divided into two groups, and the two groups of spoke mounting holes are staggered up and down on the first mounting portion. The spoke mounting holes are provided with a first mounting groove on one side close to the docking portion. The spoke mounting holes are composed of a first hole and a second hole, and the axis of the first hole is connected to the axis of the first mounting hole; one end of the second hole is provided on one side of the first hole in the horizontal direction, and the second hole obliquely passes through the first hole; a guide groove is provided on the side of the first hole away from the second hole. The two groups of spoke mounting holes are oriented in opposite directions.

[0013] Preferably, the edge of the disk body extends in a direction away from the first mounting hole to form a first carbon fiber sheet and a second carbon fiber sheet, an installation space for embedding the spokes is formed between the first carbon fiber sheet and the second carbon fiber sheet, the installation space includes a first embedding groove and a second embedding groove, the first embedding groove and the second embedding groove are alternately arranged along the circumference of the spoke disk, and the width b of the second embedding groove is greater than the width a of the first embedding groove.

[0014] Preferably, the two ends of the first embedding groove are respectively a first end and a second end, the height of the first end is lower than the second end, the first ends of two adjacent first embedding grooves are lower than the second ends, and the first ends and second ends of two adjacent first embedding grooves are connected to each other to form the second embedding groove.

[0015] Preferably, the first end and the second end of two adjacent first embedded grooves are connected by a transition curved surface. The first embedded groove fixes one spoke, and the second embedded groove fixes two spokes.

[0016] Preferably, the edge of the disk body is bent upward to form a second mounting portion, a second mounting hole is provided on the side of the second mounting portion, an installation space is formed between the second mounting portion and the spoke disk, and the installation space is connected to the second mounting hole, an upper end portion of the second mounting portion protrudes an extension section into the spoke disk, the second mounting hole is used to clamp the end portion of the spoke, and the extension section covers the end portion, a second mounting groove is provided at the position of the installation space corresponding to the second mounting hole, and the end portion is embedded in the second mounting groove.

[0017] Preferably, the second mounting groove protrudes in a direction away from the docking portion, and a cross-sectional shape of the second mounting groove is U-shaped.

[0018] Preferably, the second mounting portion is inclined toward one axial end of the first mounting hole, and an angle c is provided between the second mounting portion and the plane where the spoke disk is located, and a value range of the angle c is 3-10°.

[0019] Preferably, the second mounting hole and the second mounting portion have the same inclination direction, and the angle between the axis of the second mounting hole and the plane where the spoke disk is located is d, and the value range of the angle d is 3-10°.

[0020] Preferably, a third cover plate is further included, the extension section encloses a third groove, the third cover plate is embedded in the third groove, a third mounting hole is opened in the middle of the third cover plate, and the position of the third mounting hole corresponds to that of the first mounting hole.

[0021] Preferably, a fourth groove for mounting the spokes is provided on the disk body, one end of the spoke extends to both sides to form a mounting portion, the mounting portion is mounted in the fourth groove, a fourth cover plate is fixedly connected to the disk body, and the spokes, spoke disk and fourth cover plate are fixedly connected by adhesive.

[0022] Preferably, a fourth mounting hole is provided in the middle of the fourth cover plate, and a fifth groove for mounting the spokes is provided on the fourth cover plate.

[0023] A hub comprises: a hub shell body and a spoke disk, wherein the hub shell body is provided with a first mounting position near one end thereof, and the hub shell body is provided with a second mounting position near the other end thereof, the first mounting position is used for mounting the spoke disk, and the second mounting position is used for mounting the spoke disk, and the first mounting position and the second mounting position cooperate with a first mounting hole.

[0024] Preferably, the angle between the matching surface of the first mounting position and / or the second mounting position and the first mounting hole and the central axis of the hub shell body is f, and the value range of f is 2-8 degrees.

[0025] Preferably, the disc body is inclined toward the center direction of the hub shell body.

[0026] A wheel comprises a tire, a rim, spokes and a hub, one end of the spoke is connected to a spoke disc of the hub, and the other end is connected to the rim, and the tire is arranged on the outer side of the rim.

[0027] A bicycle comprises a frame and wheels, wherein the wheels are mounted at designated positions on the frame.

[0028] The invention has the following beneficial effects:

[0029] 1. The spoke disc in the invention is separate from the main body of the hub shell and is completely detachable and replaceable. The spoke disc is made of carbon fiber material, and the overall weight is significantly reduced compared to the traditional metal spoke disc. Compared with aluminum alloy, the density of carbon fiber is less than 65%, the tensile strength is more than 7.5 times, and the elastic modulus is more than 8 times. The use of carbon fiber to make spoke discs can achieve higher strength and durability with lighter weight. The strength and fatigue resistance of the spoke disc of the present invention are better than those of traditional aluminum alloy materials, thereby solving the durability problems of the spoke holes and the entire hub.

[0030] 2. Carbon fiber spoke discs usually have higher strength and rigidity than ordinary metal spoke discs. When subjected to the same load, the spoke discs are less likely to deform, providing stable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the installation of the hub and the rim provided in the first specific embodiment of the present invention;

[0032] Figure 2 It is a partial enlarged schematic diagram of A provided in the first specific embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the overall structure of the spoke disk provided in the first specific embodiment of the present invention;

[0034] Figure 4 It is a side view schematic diagram of the spoke disk provided in the first specific embodiment of the present invention;

[0035] Figure 5 It is a cross-sectional schematic diagram along BB provided in the first specific embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of a hub with an aluminum alloy spoke disk provided in a specific embodiment 1 of the present invention;

[0037] Figure 7 It is a schematic diagram of the force analysis of the yield force of the non-driving side of the split spoke disk provided in the first specific embodiment of the present invention;

[0038] Figure 8It is a schematic diagram of the force analysis of the yield force of the non-driving side of the integrated spoke disc provided in the first specific embodiment of the present invention;

[0039] Fig. 9 It is a schematic diagram of the force analysis of the yield force of the driving side of the split-type spoke disk provided in the first specific embodiment of the present invention;

[0040] Fig.10 It is a schematic diagram of the yield force analysis of the driving side of the integrated spoke disk provided in the first specific embodiment of the present invention;

[0041] Fig.11 It is a schematic diagram of force analysis of the non-driving side ESTRN of the split spoke disc provided in the first specific embodiment of the present invention;

[0042] Fig.12 It is a schematic diagram of force analysis of the non-driving side ESTRN of the integrated spoke disc provided in the first specific embodiment of the present invention;

[0043] Fig.13 It is a schematic diagram of force analysis of the driving side ESTRN of the split spoke disc provided in the first specific embodiment of the present invention;

[0044] Fig.14 It is a schematic diagram of force analysis of the driving edge ESTRN of the integrated spoke disc provided in the first specific embodiment of the present invention;

[0045] Fig.15 It is a schematic diagram of URES force analysis of the non-driving side of the split spoke disc provided in the first specific embodiment of the present invention;

[0046] Fig.16 It is a schematic diagram of the URES force analysis of the non-driving side of the integrated spoke disc provided in the first specific embodiment of the present invention;

[0047] Fig.17 It is a schematic diagram of the URES force analysis of the driving side of the split spoke disc provided in the first specific embodiment of the present invention;

[0048] Fig.18 It is a schematic diagram of the force analysis of the URES of the driving side of the integrated spoke disc provided in the first specific embodiment of the present invention;

[0049] Fig.19 It is a structural schematic diagram of a spoke disk provided in a second specific embodiment of the present invention;

[0050] Fig. 20 It is a side view schematic diagram of a spoke disc provided in a second specific embodiment of the present invention;

[0051] Fig.21 It is a schematic diagram of installing spokes on a spoke disc provided in a second specific embodiment of the present invention;

[0052] Fig. 22 It is a schematic diagram of the installation of the hub and the rim provided in the third specific embodiment of the present invention;

[0053] Fig.23 It is a partial enlarged schematic diagram of the C provided in the specific embodiment 3 of the present invention;

[0054] Fig.24 This is a schematic diagram of the overall structure of the spoke disk provided in the third specific embodiment of the present invention;

[0055] Fig.25 It is a cross-sectional schematic diagram of the spoke disk provided in the third specific embodiment of the present invention;

[0056] Fig.26 This is a schematic structural diagram of a third cover plate provided in a third specific embodiment of the present invention;

[0057] Fig. 27 This is a schematic diagram of installation of the spoke provided in the third specific embodiment of the present invention on the spoke disk;

[0058] Fig.28 This is a schematic diagram of a hub provided in a fourth specific embodiment of the present invention being installed on a wheel rim;

[0059] Fig.29 It is a partial enlarged schematic diagram of the D provided in the fourth specific embodiment of the present invention;

[0060] Fig.30 It is an exploded schematic diagram of a hub provided in a fourth specific embodiment of the present invention;

[0061] Fig.31 It is a structural schematic diagram of a spoke disk provided in a fourth specific embodiment of the present invention;

[0062] Fig.32 It is an exploded schematic diagram of a hub provided in a fourth specific embodiment of the present invention;

[0063] Fig.33 This is a schematic diagram of the installation of a hub provided in a fourth specific embodiment of the present invention;

[0064] Fig.34 It is a schematic diagram of the structure of the spoke provided in the fourth specific embodiment of the present invention;

[0065] Fig.35 (a) is a schematic diagram of the structure of a spoke provided in a fourth specific embodiment of the present invention;

[0066] Fig.35 (b) is a schematic diagram of the structure of a spoke provided in a fourth specific embodiment of the present invention;

[0067] Fig.35(c) is a schematic diagram of the structure of a spoke provided in a fourth specific embodiment of the present invention;

[0068] Fig.35 (d) is a schematic diagram of the structure of a spoke provided in a fourth specific embodiment of the present invention;

[0069] Fig.35 (e) is a schematic diagram of the structure of a spoke provided in a fourth specific embodiment of the present invention;

[0070] Fig.36 It is a cross-sectional schematic diagram of the hub shell body provided in the fifth specific embodiment of the present invention;

[0071] Fig.37 This is an exploded schematic diagram of the hub provided in the fifth specific embodiment of the present invention.

[0072] Main component symbols:

[0073] 100, spoke disc; 101, first mounting hole; 110, disc body; 120, first mounting portion; 121, spoke mounting hole; 1211, first hole; 1212, second hole; 1213, guide groove; 122, first mounting groove; 123, retaining ring; 130, docking portion; 131, reinforcing rib; 200, hub shell body; 210, first mounting position; 220, second mounting position; 310, first carbon fiber sheet; 320, second carbon fiber sheet; 330, first embedding groove; 340, second embedding groove; 400, third cover plate; 410, second mounting portion; 420, extension section; 430, second mounting groove; 440, second mounting hole; 500, fourth cover plate; 510, fifth groove; 520, fourth groove; 600, spoke; 610, mounting portion; 700, rim. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solutions and advantages of the invention more clearly understood, the invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0075] Embodiment 1

[0076] like Figures 1 to 5 As shown, the invention discloses a split carbon fiber spoke disk, comprising: a disk body 110 and a first mounting hole 101 arranged in the middle of the disk body 110, the inner wall of the first mounting hole 101 is inclined, the cross-sectional shape of the first mounting hole 101 is non-circular, and the disk body 110 is made of carbon fiber material.

[0077] In this embodiment, the spoke disc 100 is made of carbon fiber material, which can reduce the weight of the hub and improve the overall strength. The following table 1 shows the performance comparison between carbon fiber material and aluminum alloy:

[0078] Table 1

[0079]

[0080] As can be seen from Table 1, the spoke disc made of carbon fiber material in the present invention is not only lighter, but also has better strength and fatigue resistance than traditional aluminum alloy materials, thereby solving the durability problem of the spoke holes and the entire hub.

[0081] The spoke disc 100 and the hub shell body 200 can improve the fastening force between the spoke disc 100 and the hub shell body 200 by the inclined surface cooperation. When the inclined surface on the first mounting hole 101 cooperates with the inclined surface on the first mounting post, an additional friction force is generated. This friction force helps to prevent relative movement between the parts, thereby enhancing the fastening of the connection. At the same time, the inclined surfaces between the spoke disc 100 and the hub shell body 200 cooperate with each other to facilitate the installation and adjustment of the parts.

[0082] In this embodiment, a docking portion 130 is provided in the middle of the disk body 110, and the first mounting hole 101 is provided in the docking portion 130, and the docking portion 130 protrudes from one side or both sides of the disk body 110; the cross-sectional shape of the first mounting hole 101 is a polygon, or a shape formed by connecting multiple arc segments and straight line segments end to end. The cross-sections of the first mounting hole 101 and the first mounting column are set to be regular polygons, and the corners of the regular polygons are chamfered or rounded, so that relative rotation between the spoke disk 100 and the hub shell body 200 can be avoided. The setting of the docking portion 130 appropriately extends the first mounting hole 101, increases the matching area between the first mounting hole 101 and the first mounting column, and improves the stability and reliability of the matching.

[0083] In this embodiment, a first mounting groove 122 is formed on one side of the spoke mounting hole 121 close to the docking portion 130 . The first mounting groove 122 is used to mount an end cap of the end of the spoke 600 , so that the spoke 600 can be fixed on the spoke disc 100 .

[0084] The spoke mounting holes 121 are divided into two groups, one group is close to the disc body 110, and the other group is far away from the disc body 110. The two groups of spoke mounting holes 121 are staggered on the first mounting portion 120. The two groups of spoke mounting holes 121 are staggered so that the spokes 600 can be staggered when the spokes 600 are woven, providing more diverse spoke 600 weaving methods.

[0085] In this embodiment, the spoke mounting hole 121 is composed of a first hole 1211 and a second hole 1212. The axis of the first hole 1211 is connected to the axis of the first mounting hole 101. One end of the second hole 1212 is arranged on one side of the first hole 1211 in the horizontal direction, and the second hole 1212 obliquely passes through the first hole 1211. A guide groove 1213 is provided on the side of the first hole 1211 away from the second hole 1212. The arrangement of the first hole 1211, the second hole 1212 and the guide groove 1213 enables the spokes 600 on the spoke disk 100 to be pulled straight or obliquely, thereby expanding the application range of the spoke disk 100. At the same time, the friction between the spokes 600 and the spoke disk 100 can also be reduced.

[0086] The two groups of spoke mounting holes 121 face in opposite directions, and the first holes 1211 and the second holes 1212 of the two groups of spoke mounting holes 121 are swapped so that the spokes 600 installed in the two groups of spoke mounting holes 121 can form a crossed state when being diagonally pulled.

[0087] One end of the first mounting portion 120 away from the disk body 110 extends toward the docking portion 130 to form a retaining ring 123. The retaining ring 123 is provided to shield the end cap position of the end of the spoke 600, thereby protecting the end cap of the end of the spoke 600.

[0088] To further compare the performance of the carbon fiber spoke disc of the present invention with that of the aluminum alloy spoke disc, a hub formed by installing the split carbon fiber spoke disc of the present invention on the aluminum alloy hub shell body is compared with a hub having an aluminum alloy spoke disc (such as Figure 6 A comparative experiment was conducted.

[0089] Experimental group: a hub having the carbon fiber spoke disc of the present invention installed on an aluminum alloy hub shell body, spokes installed on the carbon fiber spoke disc, and tension applied to the spokes to detect various data of the spoke disc after being pulled.

[0090] Control group: a hub with an aluminum alloy spoke disk, the aluminum alloy spoke disk and the aluminum alloy hub shell body are an integrated structure, spokes (the same spokes as the experimental group) are installed on the comparative aluminum alloy spoke disk, and tension is applied to the spokes to detect various data of the spoke disk after being pulled.

[0091] Yield stress: refers to the phenomenon that when the stress reaches a certain value during the stretching or compression process of the material, the stress increases slightly while the strain increases sharply, resulting in changes. Figures 7-10 This is a stress analysis diagram of the yield force of the split carbon fiber spoke disc and the integrated aluminum alloy spoke disc of the present invention. Wheel set conditions: 1. Same spokes; 2. Same weaving method, and spokes are both subjected to 1400N tension at the same time. The analysis results are shown in Table 2 below:

[0092] Table 2

[0093]

[0094] As can be seen from Table 2, the split carbon fiber spoke disc can withstand greater stress than the integrated aluminum alloy spoke disc under the same stress condition, which is 10 times that of the aluminum alloy spoke disc.

[0095] ESTRN: It describes the deformation of a material under stress. In finite element analysis, equivalent strain is an important parameter to measure the local deformation of a material. It indicates the average deformation degree of a material under stress. Figures 11 to 14 This is the force analysis diagram of the split carbon fiber spoke disc and the integrated aluminum alloy spoke disc ESTRN of the present invention. Wheel set conditions: 1. Same spokes; 2. Same weaving method, and spokes are both subjected to 1400N tension at the same time. The analysis results are shown in Table 2 below:

[0096] Table 3

[0097]

[0098] As can be seen from Table 3, when the split carbon fiber spoke disc is subjected to the same force and the same deformation as the integrated aluminum alloy spoke disc, the split carbon fiber spoke disc requires at least 10 times the force to produce the same deformation as the split aluminum alloy spoke disc.

[0099] URES represents the composite displacement of an object after being acted upon by multiple forces. This displacement is the result of considering the combined effects of all forces. Figures 15 to 18 This is the force analysis diagram of the split carbon fiber spoke disc and the integrated aluminum alloy spoke disc URES of the present invention. Wheel set conditions: 1. Same spokes; 2. Same weaving method, and spokes are both subjected to 1400N tension at the same time. The analysis results are shown in Table 4 below:

[0100] Table 4

[0101]

[0102] If the spoke disc is pulled to the breaking value, the split carbon fiber flange disc of the present invention requires greater force, and the force to the breaking value of the split carbon fiber spoke disc of the present invention is at least 10 times that of the one-piece aluminum alloy spoke disc of the control group.

[0103] Embodiment 2

[0104] like Figures 19 to 21As shown, the difference between this embodiment and the first embodiment is that: the edge of the disk body 110 extends in a direction away from the first mounting hole 101 to form a first carbon fiber sheet 310 and a second carbon fiber sheet 320, and an installation space for embedding the spoke 600 is formed between the first carbon fiber sheet 310 and the second carbon fiber sheet 320, and the installation space includes a first embedding groove 330 and a second embedding groove 340, and the first embedding groove 330 and the second embedding groove 340 are alternately arranged along the circumference of the spoke disk 100, and the width b of the second embedding groove 340 is greater than the width a of the first embedding groove 330.

[0105] In this embodiment, four first embedding grooves 330 are provided on the circumference of the spoke disc 100, and four second embedding grooves 340 are provided on the spoke disc 100. The first embedding grooves 330 and the second embedding grooves 340 are evenly arranged around the spoke disc 100, so that the spokes 600 can maintain appropriate tension and symmetry after installation to provide good wheel running performance and durability. Lightweight is an important feature of carbon fiber bicycles. The spoke disc 100 made of carbon fiber weighs only 8 to 10g and has high strength, which meets the lightweight requirements of carbon fiber bicycles. In addition, carbon fiber materials have excellent vibration absorption capabilities, which can reduce the vibration and noise generated by the wheel set during driving.

[0106] The two ends of the first embedding groove 330 are respectively a first end and a second end, the height of the first end is lower than the second end, the first ends of two adjacent first embedding grooves 330 are lower than the second ends, and the first ends and second ends of two adjacent first embedding grooves 330 are connected to each other to form a second embedding groove 340.

[0107] The first embedded groove 330 fixes one spoke 600, and the second embedded groove 340 fixes two spokes 600. In this embodiment, the first embedded groove 330 and the second embedded groove 340 can effectively disperse the tension and torsion of the spoke 600, so that it is evenly distributed in the entire spoke system, reducing the risk of local stress concentration, and extending the service life of the wheel set. At the same time, the groove design can make the installation and replacement process of the spoke 600 simpler and faster, reduce the complexity of the operation when maintaining and replacing the spoke 600, and improve the maintenance efficiency.

[0108] In this embodiment, during use, the carbon fiber spokes 600 can be fixed in the first embedding grooves 330, and the spokes 600 in two adjacent first embedding grooves 330 are staggered in the second embedding grooves 340. In the above embodiment, the first end and the second end of the two adjacent first embedding grooves 330 are connected by a transition curved surface, thereby preventing the carbon fiber spokes 600 from being scratched by the transition between the first embedding grooves 330 and the second embedding grooves 340 or preventing the spokes 600 from being bent and deformed.

[0109] Embodiment 3

[0110] like Figures 22 to 27 As shown, the difference between this embodiment and the first embodiment is that: the spoke disk 100 includes a disk body 110, the edge of the disk body 110 is bent upward to form a second mounting portion 410, and a second mounting hole 440 is provided on the side of the second mounting portion 410, and an installation space is formed between the second mounting portion 410 and the spoke disk 100, and the installation space is connected to the second mounting hole 440, and the upper end of the second mounting portion 410 protrudes an extension section 420 into the spoke disk 100, the second mounting hole 440 is used to clamp the end portion of the spoke 600, and the extension section 420 covers the end portion, and the installation space corresponds to the position of the second mounting hole 440 and protrudes in the direction away from the spoke disk 100 to form a second mounting groove 430, and the end portion is embedded in the second mounting groove 430.

[0111] The cross-sectional shape of the second mounting groove 430 is U-shaped. When one end of the spoke 600 is installed in the second mounting groove 430, the end of the spoke 600 cooperates with the second mounting groove 430, thereby reducing the shaking of the spoke 600, reducing the friction between the spoke 600 and the second mounting hole 440, and preventing the diameter of the second mounting hole 440 from increasing rapidly, thereby extending the service life of the spoke disc 100. Similarly, the second mounting groove 430 and the spoke 600 are configured in a U-shape on the side in contact with each other, which can also reduce the wear caused by the friction between the second mounting groove 430 and the end.

[0112] There are 5-10 second mounting grooves 430, and seven in this embodiment, which are evenly distributed on the side of the disc body 110. In this embodiment, the second mounting grooves 430 protrude away from the disc body 110, so that the outer contour of the spoke disc 100 is in the shape of a seven-pointed star.

[0113] The extension section 420 encloses to form a third groove, the third cover plate 400 is embedded in the third groove, and a third mounting hole is opened in the middle of the third cover plate 400, and the third mounting hole corresponds to the position of the first mounting hole 101. In this embodiment, the third cover plate 400 is glued to the groove by adhesive to prevent dust from entering the second mounting groove 430. Dust entering the second mounting groove 430 is likely to increase the friction between different parts, causing rapid wear of the parts and reducing the service life of the parts.

[0114] The second mounting portion 410 is inclined toward one end of the axial direction of the first mounting hole 101, and the angle between the second mounting portion 410 and the plane where the spoke disc 100 is located is c, and the value range of the angle c is 3-10°. In this embodiment, the disc body 110 and the bicycle rim 700 are not on the same horizontal plane, so there is an angle between the spoke 600 and the spoke disc 100. In order to facilitate the installation of the spoke 600 and reduce the stress of the spoke 600 after installation, the second mounting portion 410 is arranged toward the bicycle rim 700, and the angle between the second mounting portion 410 and the plane where the disc body 110 is located is 8°

[0115] The second mounting hole 440 and the second mounting portion 410 have the same inclination direction, and the angle between the axis of the second mounting hole 440 and the plane where the spoke disc 100 is located is d, and the value range of the angle d is 3-10°. In this embodiment, the spoke disc 100 and the bicycle rim 700 are not on the same horizontal plane, so there is an angle between the spoke 600 and the spoke disc 100. In order to facilitate the installation of the spoke 600 and reduce the friction between the spoke 600 and the second mounting hole 440 after installation, the second mounting portion 410 is arranged toward the bicycle rim 700, and the angle between the axis of the second mounting hole 440 and the plane where the disc body 110 is located is 8°.

[0116] Embodiment 4

[0117] like Figures 28 to 35 As shown, the difference between this embodiment and the first embodiment is that: a fourth groove 520 for mounting the spoke 600 is provided on the disc body 110, one end of the spoke 600 extends to both sides to form a mounting portion 610, the mounting portion 610 is mounted in the fourth groove 520, a fourth cover plate 500 is fixedly connected to the disc body 110, and the spoke 600, the spoke disc 100 and the fourth cover plate 500 are fixedly connected by an adhesive. In this embodiment, after the spoke 600 is mounted in the fourth groove 520, the mounting portion 610 with a forked design at the end of the spoke 600 abuts against the side wall of the fourth groove 520, which can well disperse the force to the side wall of the fourth groove 520 and reduce the local stress on the spoke disc 100.

[0118] In this embodiment, the spokes 600 are combined with the two mounting portions 610 to form a Y shape. The spokes 600 can be provided individually, or the mounting portions 610 of adjacent spokes 600 can be connected to each other, and a plurality of spokes 600 are arranged in a circle to form a whole.

[0119] A fourth mounting hole is provided in the middle of the fourth cover plate 500, and a fifth groove 510 for mounting the spoke 600 is provided on the fourth cover plate 500. In this embodiment, the fourth mounting hole coincides with the first mounting hole 101, so that the hub shell body 200 can pass through the fourth mounting hole. The opening of the fifth groove 510 makes the installation of the spoke 600 more stable and reliable, and the fourth cover plate 500 fits more closely to the spoke disk 100.

[0120] Embodiment 5

[0121] like Figures 36-37As shown, a hub comprises: a hub shell body 200 and a spoke disc 100, wherein the hub shell body 200 is provided with a first mounting position 210 near one end thereof, and the hub shell body 200 is provided with a second mounting position 220 near the other end thereof, wherein the first mounting position 210 is used to mount the spoke disc 100, and the second mounting position 220 is used to mount the spoke disc 100. The first mounting position 210 and the second mounting position 220 are matched with the first mounting hole 101.

[0122] In this embodiment, the angle between the mating surface of the first mounting position 210 and / or the second mounting position 220 and the first mounting hole 101 and the central axis of the hub shell body 200 is f, and f is 3 degrees, so that the first mounting position 210 and the second mounting position 220 and the first mounting hole 101 fit more closely.

[0123] In this embodiment, the first installation position 210 uses the spoke disc 100 of embodiment 1, and the second installation position 220 uses the spoke disc 100 of embodiment 3. The first installation position 210 and the second installation position 220 can select the same or different spoke discs 100 for matching according to actual needs.

[0124] The disc body 110 is inclined toward the center direction of the hub shell body 200. In this embodiment, during the actual installation process, the spoke disc 100 is located on one side of the rim 700, and the spokes 600 are in an inclined state after connecting the rim 700 and the spoke disc 100, rather than being perpendicular to the ground. The inclined setting of the disc body 110 plays a guiding role for the spokes 600.

[0125] Embodiment 6

[0126] A wheel includes: a tire, a rim 700, spokes 600 and a hub, one end of the spoke 600 is connected to the spoke disc 100 of the hub, and the other end is connected to the rim 700, and the tire is arranged on the outer side of the rim 700. In this embodiment, the hub of the invention is convenient for disassembly and assembly, and thus convenient for repair and maintenance.

[0127] Embodiment 7

[0128] A bicycle comprises a frame and wheels, wherein the wheels are mounted at designated positions on the frame.

[0129] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the invention should be covered within the protection scope of the invention.

Claims

1. A split carbon fiber spoke disc, characterized in that: include: The disc body and the first mounting hole are arranged in the middle of the disc body, the inner wall of the first mounting hole is arranged obliquely, the cross-sectional shape of the first mounting hole is non-circular, and the disc body is made of carbon fiber material.

2. The split carbon fiber spoke disc according to claim 1, characterized in that: A docking portion is provided in the middle of the disk body, the first mounting hole is provided in the docking portion, and the docking portion protrudes from one side or both sides of the disk body; the cross-sectional shape of the first mounting hole is a polygon, or a shape formed by connecting multiple arc segments and straight line segments end to end.

3. The split carbon fiber spoke disc according to claim 2, characterized in that: One end of the first mounting portion away from the disk body extends toward the docking portion to form a retaining ring.

4. The split carbon fiber spoke disc according to claim 3, characterized in that: The side of the first mounting portion is provided with spoke mounting holes for mounting spokes, and the spoke mounting holes are divided into two groups, and the two groups of spoke mounting holes are staggered up and down on the first mounting portion; A first mounting groove is provided on one side of the spoke mounting hole close to the docking portion; The spoke mounting hole is composed of a first hole and a second hole, the axis of the first hole is connected to the axis of the first mounting hole; one end of the second hole is arranged on one side of the first hole in the horizontal direction, and the second hole obliquely passes through the first hole; a guide groove is provided on the side of the first hole away from the second hole; The two groups of spoke mounting holes are oriented in opposite directions.

5. The split carbon fiber spoke disc according to claim 2, characterized in that: The edge of the disk body extends in a direction away from the first mounting hole to form a first carbon fiber sheet and a second carbon fiber sheet, an installation space for embedding spokes is formed between the first carbon fiber sheet and the second carbon fiber sheet, the installation space includes a first embedding groove and a second embedding groove, the first embedding groove and the second embedding groove are alternately arranged along the circumference of the spoke disk, and the width b of the second embedding groove is greater than the width a of the first embedding groove.

6. The split carbon fiber spoke disc according to claim 5, characterized in that: The two ends of the first embedding groove are respectively a first end and a second end, the height of the first end is lower than the second end, the first ends of two adjacent first embedding grooves are lower than the second ends, and the first ends and second ends of two adjacent first embedding grooves are connected to each other to form the second embedding groove.

7. The split carbon fiber spoke disc according to claim 6, characterized in that: The first end and the second end of two adjacent first embedded grooves are connected via a transition curved surface; the first embedded groove fixes one spoke, and the second embedded groove fixes two spokes.

8. The split carbon fiber spoke disc according to claim 2, characterized in that: The edge of the disk body is bent upward to form a second mounting portion, and a second mounting hole is arranged on the side of the second mounting portion. An mounting space is formed between the second mounting portion and the spoke disk, and the mounting space is connected with the second mounting hole. An extension section is protruded into the spoke disk by the upper end portion of the second mounting portion, and the second mounting hole is used to clamp the end portion of the spoke, and the extension section covers the end portion. A second mounting groove is arranged at a position of the mounting space corresponding to the second mounting hole, and the end portion is embedded in the second mounting groove.

9. The split carbon fiber spoke disc according to claim 8, characterized in that: The second mounting groove protrudes in a direction away from the docking portion, and a cross-sectional shape of the second mounting groove is U-shaped.

10. The split carbon fiber spoke disc according to claim 9, characterized in that: The second mounting portion is inclined toward one axial end of the first mounting hole, and an angle c is provided between the second mounting portion and the plane where the spoke disk is located, and a value range of the angle c is 3-10°.

11. The split carbon fiber spoke disc according to claim 10, characterized in that: The second mounting hole and the second mounting portion have the same inclination direction, and an angle d is provided between an axis of the second mounting hole and a plane where the spoke disc is located, and a value range of the angle d is 3-10°.

12. The split carbon fiber spoke disc according to claim 11, characterized in that: It also includes a third cover plate, the extension section encloses a third groove, the third cover plate is embedded in the third groove, a third mounting hole is opened in the middle of the third cover plate, and the position of the third mounting hole corresponds to that of the first mounting hole.

13. The split carbon fiber spoke disc according to claim 2, characterized in that: The disk body is provided with a fourth groove for mounting the spokes, one end of the spoke extends to both sides to form a mounting portion, the mounting portion is mounted in the fourth groove, a fourth cover plate is fixedly connected to the disk body, and the spokes, spoke disk and fourth cover plate are fixedly connected by adhesive.

14. The split carbon fiber spoke disc according to claim 13, characterized in that: A fourth mounting hole is provided in the middle of the fourth cover plate, and a fifth groove for mounting the spokes is provided on the fourth cover plate.

15. A hub, characterized in that: include: A hub shell body and a spoke disk as described in any one of claims 1-14, wherein a first mounting position is provided near one end of the hub shell body, and a second mounting position is provided near the other end of the hub shell body, the first mounting position is used to install the spoke disk as described in any one of claims 1-14, and the second mounting position is used to install the spoke disk as described in any one of claims 1-14; the first mounting position and the second mounting position cooperate with the first mounting hole.

16. A hub according to claim 15, characterized in that: The included angle between the matching surface of the first mounting position and / or the second mounting position and the first mounting hole and the central axis of the hub shell body is f, and the value range of f is 2-8 degrees.

17. A hub according to claim 16, characterized in that: The disc body is inclined toward the center direction of the hub shell body.

18. A wheel, characterized in that: include: A tire, a rim, spokes and a hub as claimed in claim 17, wherein one end of the spoke is connected to the spoke disc of the hub and the other end is connected to the rim, and the tire is arranged on the outside of the rim.

19. A bicycle, characterized in that: include: A vehicle frame and the wheel as claimed in claim 18, wherein the wheel is mounted at a designated position on the vehicle frame.

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