Fiber spoke and wheel

Abstract

The invention provides a fiber spoke and a wheel, the fiber spoke comprises a spoke main body, the two ends of the spoke main body are connected with a first end part and a second end part, and the first end part and the second end part are used for being connected with a rim; the integrated fiber spoke is characterized in that a forked part is formed in the middle of the spoke body and used for being connected with a hub, so that the integrated fiber spoke is formed, after the hub and all the spokes are connected into a whole, the overall rigidity of a wheel set can be improved, and deflection of the spokes is avoided; and the bifurcated parts of the fiber spokes are connected to the central boss on the end surface of the hub in a sleeving manner, so that the centripetal resultant force of the plurality of spokes is more easily adjusted to be positioned in the center of the rim during installation, the spokes are more convenient to install, and the appearance of the wheel set is improved.

Description

Technical Field

[0001] The invention relates to the field of vehicle accessories, and in particular to a fiber spoke and a wheel. Background Art

[0002] Spokes are common vehicle parts used to connect the wheel rim and the hub, especially in small motor vehicles such as bicycles and motorcycles. Spoke parts meet the performance requirements of high tensile strength and good fatigue performance. Traditional steel wire spokes are heavy and have low tensile strength, so they do not have a competitive advantage. Therefore, fiber spokes with better performance were invented.

[0003] The main body of the fiber spoke is made by bundling and shaping high-strength and high-modulus fibers. The connectors (teeth caps and cap heads) at both ends of the spoke used to connect with the rim and the hub are relatively complex and are usually difficult to be made directly from fiber materials. Therefore, most existing fiber spokes are formed by compositely connecting the two ends of the fiber spoke body with corresponding connectors made of other materials (such as hard metal or ceramic).

[0004] Traditional bicycle spokes are mostly made of steel wire spokes, which are heavy and low in strength. Therefore, an alternative solution using carbon fiber spokes has emerged in the prior art. Although it solves the strength and weight problems of traditional spokes to a certain extent, the spokes are prone to deflection when the tension changes and the overall rigidity is weak.

[0005] The existing carbon fiber one-piece long spokes are usually connected to the hub with one side of the spoke, and the two ends of the spoke are connected to the rim. Although this solves the problem of the spoke being prone to deflection when the tension changes and the overall rigidity being weak to a certain extent, when multiple spokes are installed in sequence, there is a technical problem that the centripetal force of the multiple spokes is not located at the center of the rim due to inconsistent tension of the multiple spokes, which leads to eccentricity of the hub, i.e., the spokes are difficult to install. Summary of the invention

[0006] Therefore, in view of the above problems, the present invention provides a fiber spoke and a wheel.

[0007] The present invention is implemented by the following scheme:

[0008] The present invention proposes a fiber spoke, which includes a spoke body, wherein the two ends of the spoke body are connected with a first end and a second end, and the first end and the second end are used to connect to a wheel rim; it is characterized in that a forked portion is formed in the middle of the spoke body, and the forked portion is used to connect to a hub.

[0009] In one embodiment, a spoke center opening is formed in the middle of the forked portion of the fiber spoke, and after the forked portion is connected to the hub, the center axis of the hub passes through the spoke center opening.

[0010] In one embodiment, the spoke body forms two side arms at the forked portion, and two connecting sections are connected between the two side arms, thereby forming a spoke center opening in the middle of the forked portion and limiting openings on both sides of the spoke center opening.

[0011] In one embodiment, the bifurcated portion of the fiber spoke is formed with at least one pair of limiting surfaces disposed opposite to each other on the inner side of the spoke center opening, and the limiting surfaces disposed opposite to each other are used for being fitted and connected with the hub.

[0012] In one embodiment, the two side arms form at least one pair of first limiting surfaces arranged opposite to each other on the inner side of the center opening of the spoke, and the connecting section forms a second limiting surface on the inner side of the center opening of the spoke; the first limiting surface and the second limiting surface are used for fitting and limiting connection with the hub.

[0013] In one embodiment, the forked portion is formed over the entire length of the spoke body.

[0014] The present invention also proposes a wheel, comprising the fiber spokes as described in any one of claims 1 to 6, and a rim and a hub connected by the fiber spokes, wherein a plurality of the fiber spokes are connected to the hub as a whole via the forked portion, and the first ends and second ends of the plurality of the fiber spokes are respectively connected to the rim.

[0015] In one embodiment, a center boss is formed on the end surface of the hub, and the cross section of the center boss is polygonal; the center boss is sleeved and connected in the fork portion.

[0016] In one embodiment, a limiting boss is further formed on the end surface of the hub, a spoke mounting groove is formed between the central boss and the limiting boss, and the forked portion is mounted on the spoke mounting groove.

[0017] In one embodiment, the limiting boss abuts against an edge of a spoke body of the fiber spoke.

[0018] The present invention also proposes a wheel, comprising fiber spokes, and a rim and a hub connected by the fiber spokes, wherein the first end and the second end of the plurality of fiber spokes are respectively connected to the rim; the fiber spokes comprise a spoke body, the two ends of the spoke body are connected with a first end and a second end, the first end and the second end are connected to the rim; a fork is formed in the middle of the spoke body, and the plurality of fiber spokes are connected to the hub as a whole through the fork; a spoke center opening is formed in the middle of the fork, the fork of the fiber spokes is formed with at least one pair of limiting surfaces arranged opposite to each other on the inner side of the spoke center opening, a center boss is formed on the end surface of the hub, and the cross-section of the center boss is polygonal; the center boss is sleeved and connected in the fork, and the center axis of the hub passes through the spoke center opening; the limiting surfaces arranged opposite to each other are abutted against the boss side faces of the center boss.

[0019] The technical solution provided by the present invention has the following technical effects:

[0020] 1. Both ends of the fiber spoke of the present invention are connected to the wheel rim, and a forked portion is formed in the middle of the spoke body, and the forked portion is used to be connected to the hub, thereby forming an integrated fiber spoke, so that when the hub and all the spokes are connected as one, the overall rigidity of the wheel set can be increased and the spoke deflection can be avoided; and the forked portions of all the fiber spokes can be connected to the hub first, so that during installation, the centripetal force of multiple spokes can be more conveniently adjusted to the center of the wheel rim, and the installation of the spokes is more convenient; in addition, the appearance of the wheel set is improved.

[0021] 2. A spoke center opening is formed in the middle of the forked portion of the fiber spoke of the present invention, and after the forked portion is connected to the hub, the center axis of the hub passes through the spoke center opening, that is, the forked portion of the fiber spoke is sleeved and connected to the hub, and during installation, the combined force of multiple spokes can be more conveniently adjusted to pass through the center axis of the hub, and then adjusted to the center of the rim, making the installation of the spokes simpler and more convenient.

[0022] 3. The bifurcated portion of the fiber spoke of the present invention is formed with at least one pair of limiting surfaces disposed opposite to each other on the inner side of the spoke center opening, and the at least one pair of limiting surfaces facing each other are abutted against the side surfaces of the central boss to limit rotation on at least two opposite sides, thereby further enhancing the performance of preventing the fiber spoke from rotating relative to the hub. Preferably, the limiting boss abuts against the edge of the spoke body of the fiber spoke, thereby further preventing the fiber spoke from rotating relative to the hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a wheel embodiment of the present invention;

[0024] Figure 2This is a cross-sectional view of the wheel (without hatching to more clearly express the detailed features and only retaining a single spoke);

[0025] Figure 3 is a front view of the fiber spoke in the first embodiment;

[0026] Figure 4 is a front view of the hub in the first embodiment;

[0027] Figure 5 is a three-dimensional diagram of the hub in the first embodiment;

[0028] Figure 6 It is a front view of the connection between a single fiber spoke, a hub and a wheel rim in the first embodiment;

[0029] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0030] Figure 8 It is a three-dimensional view of the side cover;

[0031] Fig. 9 is a front view of the fiber spoke in the second embodiment;

[0032] Fig.10 is a front view of the hub in the second embodiment;

[0033] Fig.11 It is a front view of the connection between a single fiber spoke, a hub and a wheel rim in the second embodiment;

[0034] Fig.12 yes Fig.11 Enlarged view of point B in the middle;

[0035] Fig.13 is a front view of the fiber spoke in the third embodiment;

[0036] Fig.14 is a front view of the hub in the third embodiment;

[0037] Fig.15 is a front view of the connection between a single fiber spoke, a hub and a wheel rim in the third embodiment;

[0038] Fig.16 yes Fig.15 Enlarged view of point C in the middle. DETAILED DESCRIPTION

[0039] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0040] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0041] Example 1

[0042] like Figure 1-8 As shown, the first embodiment of the present invention provides a conjoined fiber spoke 10, the fiber spoke 10 comprises a spoke body 101, the two ends of the spoke body 101 are connected with a first end 102 and a second end 103, the first end 102 and the second end 103 are used to connect with the rim 20; a fork portion 104 is formed in the middle of the spoke body 101, and the fork portion 104 is used to connect with the hub 30. Figure 1 and Figure 2 As shown, the first end 102 and the second end 103 of the plurality of fiber spokes 10 are connected to the wheel rim 20, the forked portion 104 of the plurality of fiber spokes 10 is connected to the hub 30, and the outer side of the hub 30 is provided with a side cover 40, and the fiber spokes 10, the hub 30 and the side cover 40 are connected as a whole, thereby forming a complete wheel. For example, the hub 30 and the side cover 40 are connected as a whole by gluing; alternatively, the fiber spokes 10, the hub 30 and the side cover 40 are connected as a whole by screws. The fiber spokes 10 are made of a plurality of fibers of a high-strength and high-modulus material that are bundled and solidified with a strong resin. Preferably, the fiber spokes 10 are carbon fiber spokes.

[0043] It should be noted that this embodiment is described by taking the spoke 10 made of carbon fiber as an example. However, those skilled in the art can expect that it is also feasible to use a spoke body made of high-strength and high-modulus fibers of other materials. Among them, high-strength and high-modulus fibers refer to high-performance fiber materials defined under well-known standards in the industry, specifically: synthetic fibers or natural fibers with a strength greater than 10CN / dkex and a modulus greater than 200CN / dkex.

[0044] The fiber spoke 10 of this embodiment is a wind-breaking spoke, that is, the middle section of the spoke body 101 of the fiber spoke 10 is processed into a flat shaft shape during the molding and curing process, and its two connected ends 102 and 103 are still cylindrical shafts, so that the flat shaft shape design of the middle section of the spoke body 101 can be used to greatly reduce the wind resistance of the vehicle.

[0045] A center boss 32 and a limiting boss 33 are formed on the end surface 41 of the hub 30, and the cross section of the center boss 32 is a polygon. A spoke mounting groove 34 is formed between the center boss 32 and the limiting boss 33. The forked portion 104 of the fiber spoke 10 can be installed on the spoke mounting groove 34, so that the fiber spoke 10 is installed on the hub 30. A spoke center opening 105 is formed in the middle of the forked portion 104 of the fiber spoke 10. After the forked portion 104 is connected to the hub 30, the central axis of the hub 30 passes through the spoke center opening 105; after the forked portion 104 of the fiber spoke 10 is installed on the spoke mounting groove 34, the center boss 32 is sleeved and connected in the forked portion 104.

[0046] In this embodiment, both ends of the fiber spoke 10 are connected to the rim 20, and a forked portion 104 is formed in the middle of the spoke body. The forked portion 104 is used to connect to the hub 30, thereby forming an integrated fiber spoke 10, so that when the hub 30 and all the spokes 10 are connected as one, the overall rigidity of the wheel set can be increased and the spoke deflection can be avoided; and the forked portions 103 of all the fiber spokes 10 can be connected to the hub 30 first, so that during installation, the centripetal force of multiple spokes can be more conveniently adjusted to the center of the rim 20, and the installation of the spokes is more convenient.

[0047] It should be noted that in this embodiment, the central axis of the hub 30 passes through the spoke center opening 105. However, as expected by those skilled in the art, it is also feasible to have the central axis of the hub 30 located on one side of the spoke center opening 105. However, compared with the central axis of the hub 30 being located on one side of the spoke center opening 105, the central axis of the hub 30 passes through the spoke center opening 105, and during installation, the combined force of multiple spokes is more convenient to adjust through the central axis of the hub, and then adjusted to be located at the center of the rim, making the installation of the spokes simpler and more convenient.

[0048] In this embodiment, the fiber spoke 10 is a fiber spoke 10A of the first structure, the forked portion 104 is a forked portion 104A of the first structure, the hub 30 is a hub 30A of the first structure, and the limiting boss 33 is a limiting boss 33A of the first structure. A spoke center opening 105A is formed in the middle of the forked portion 104A, and at least one pair of limiting surfaces 1051A disposed opposite to each other are formed on the inner side of the spoke center opening 105A of the forked portion 104A of the fiber spoke 10A, and the limiting surfaces 1051A disposed opposite to each other are used for being fitted with the hub 30A, so as to prevent the fiber spoke 10A from rotating relative to the hub 30A. The fitting connection refers to the abutment and cooperation between the limiting surface 1051A and the boss side surface 321 of the center boss 32, so that the center axis of the hub 30 passes through the spoke center opening 105. The limiting surface 1051A cooperates with the boss side surface 321 of the central boss 32 to prevent the fiber spoke 10A from rotating relative to the hub 30A. Further, the limiting boss 33A abuts against the edge of the spoke body 101 of the fiber spoke 10, thereby further preventing the fiber spoke 10A from rotating relative to the hub 30A.

[0049] Furthermore, the spoke body 101 of the fiber spoke 10A forms two side arms at the forked portion 104A, and two connecting sections 106 are connected between the two side arms, thereby forming the spoke center opening 105A in the middle of the forked portion 104A and the limiting openings 107 located on both sides of the spoke center opening 105A. The limiting openings 107 can be sleeved on the limiting boss 33A, thereby preventing the fiber spoke 10 from rotating relative to the hub 30. Preferably, the two side arms form at least one pair of limiting surfaces 1051A arranged opposite to each other on the inner side of the spoke center opening 105A, which is the first limiting surface 1051A; further, the connecting section 106 forms a second limiting surface 1052A on the inner side of the spoke center opening 105A, so that the two connecting sections 106 and the two side arms of the forked portion 104A can jointly enclose the entire circumference of the center boss 32, so that the first limiting surface 1051A and the second limiting surface 1052A can cooperate with multiple side surfaces of the center boss 32, thereby improving the stability of the fiber spoke 10A on the hub 30A and preventing the fiber spoke 10A from rotating and moving relative to the hub 30A.

[0050] Example 2

[0051] The second embodiment of the present invention provides a fiber spoke, which also includes a spoke body and a fork formed in the middle of the spoke body. The second embodiment is basically the same as the first embodiment, except that the structure of the fork is different from that of the first embodiment. Figure 9-10As shown, the fiber spoke 10 of the second embodiment adopts a fiber spoke 10B of the second structure, the forked portion 104 is a forked portion 104B of the second structure, the hub 30 is a hub 30B of the second structure, and the limiting boss 33 is a limiting boss 33B of the second structure. Its improved characteristics are: only one opening is formed in the middle of the forked portion 104B of the fiber spoke 10B, that is, the spoke center opening 105B, the fiber spoke 10B forms two side arms 1041B at the forked portion 104B, and the forked portion 104B of the fiber spoke 10B forms at least one pair of limiting surfaces 1051B disposed opposite to each other on the inner side of the spoke center opening 105B. The limiting surfaces 1051B disposed opposite to each other are used for fitting with the hub 30B, and the fitting connection refers to the abutment and cooperation between the limiting surface 1051B and the boss side surface 321 of the center boss 32, so that the center axis of the hub 30 passes through the spoke center opening 105. The limiting surface 1051B cooperates with the boss side surface 321 of the central boss 32 to prevent the fiber spoke 10B from rotating relative to the hub 30. The limiting boss 33B abuts against the edge of the spoke body 101 of the fiber spoke 10B, thereby further preventing the fiber spoke 10B from rotating relative to the hub 30B.

[0052] Example 3

[0053] The third embodiment of the present invention provides a fiber spoke, which also includes a spoke body and a fork formed in the middle of the spoke body. The third embodiment is basically the same as the second embodiment, except that the structure of the fork is different from that of the second embodiment. Figure 9-10As shown, the fiber spoke 10 of the third embodiment adopts a fiber spoke 10C of the third structure, the forked portion 104 is a forked portion 104C of the third structure, the hub 30 is a hub 30C of the third structure, and the limiting boss 33 is a limiting boss 33C of the third structure. Its improved characteristics are: only one opening is formed in the middle of the forked portion 104C of the fiber spoke 10C, that is, the spoke center opening 105C, the fiber spoke 10C forms two side arms 1041C at the forked portion 104C, and the forked portion 104C of the fiber spoke 10C forms at least one pair of limiting surfaces 1051C disposed opposite to each other on the inner side of the spoke center opening 105C. The limiting surfaces 1051C disposed opposite to each other are used for fitting with the hub 30C, and the fitting connection refers to the abutment and cooperation between the limiting surface 1051C and the boss side surface 321 of the center boss 32, so that the center axis of the hub 30 passes through the spoke center opening 105. The limiting surface 1051C cooperates with the boss side surface 321 of the central boss 32 to prevent the fiber spoke 10C from rotating relative to the hub 30. The limiting boss 33C abuts against the edge of the spoke body 101 of the fiber spoke 10C, thereby further preventing the fiber spoke 10C from rotating relative to the hub 30C. In this embodiment, the forked portion 104C is formed over the entire length of the spoke body 101, so that the cross-sectional area of ​​the spoke body 101 is increased over the entire length of the spoke body 101, thereby enhancing the strength of the fiber spoke 10B.

[0054] Example 4

[0055] The present invention also provides a wheel, such as Figure 1 As shown, the wheel includes the fiber spokes 10 of the second embodiment, and also includes a rim 20 and a hub 30 connected by the fiber spokes 10. The first end 102 and the second end 103 of the plurality of fiber spokes 10 are connected to the rim 20, the forked portion 104 of the plurality of fiber spokes 10 is connected to the hub 30, and a side cover 40 is provided on the outer side of the hub 30. The fiber spokes 10, the hub 30 and the side cover 40 are connected as a whole, thereby forming a complete wheel. Obviously, in other embodiments, the fiber spokes 10 of the second embodiment may be replaced by the fiber spokes of the first embodiment or the fiber spokes of the third embodiment, or other embodiments of the fiber spokes of the above embodiments that are equivalent to the fiber spokes, so as to obtain a wheel with a different appearance.

[0056] It can be seen that in the fiber spokes and wheels of the above-mentioned embodiments, because the two ends of the spoke body can be connected to the rim and a forked portion that can be connected to the hub is formed in the middle of the spoke body, during installation, the forked portions of all the fiber spokes can be connected to the hub first, so that the centripetal force of multiple spokes can be more conveniently adjusted to the center of the rim during installation and adjustment, and the installation of the spokes is more convenient. At the same time, the forked portion is used to connect to the hub to form an integrated fiber spoke, so that when the hub is connected to all the spokes, the overall rigidity of the wheel set can be increased and the spoke deflection can be avoided. It can be seen that the present invention is a fiber spoke and wheel that has both convenient installation and good structural rigidity.

[0057] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A fiber spoke, comprising a spoke body, wherein two ends of the spoke body are connected with a first end and a second end, wherein the first end and the second end are used to be connected to a wheel rim; characterized in that: A forked portion is formed in the middle of the spoke body, and the forked portion is used to be connected to the hub.

2. The fiber spoke according to claim 1, characterized in that: A spoke center opening is formed in the middle of the forked portion of the fiber spoke, and after the forked portion is connected to the hub, the central axis of the hub passes through the spoke center opening.

3. The fiber spoke according to claim 1, characterized in that: The spoke body forms two side arms at the forked portion, and two connecting sections are connected between the two side arms, so as to form a spoke center opening and limiting openings located on both sides of the spoke center opening in the middle of the forked portion.

4. The fiber spoke according to claim 2 or 3, characterized in that: The bifurcated portion of the fiber spoke is formed with at least one pair of limiting surfaces disposed opposite to each other on the inner side of the spoke center opening, and the limiting surfaces disposed opposite to each other are used for being fitted and connected with the hub.

5. The fiber spoke according to claim 3, characterized in that: The two side arms form at least a pair of first limiting surfaces arranged opposite to each other on the inner side of the center opening of the spoke, and the connecting section forms a second limiting surface on the inner side of the center opening of the spoke; the first limiting surface and the second limiting surface are both used for fitting and connecting with the hub to limit the position.

6. The fiber spoke according to claim 1, characterized in that: The forked portion is formed over the entire length of the spoke body.

7. A wheel, comprising the fiber spokes as described in any one of claims 1 to 6, and a rim and a hub connected by the fiber spokes, wherein a plurality of the fiber spokes are connected to the hub as a whole via the forked portion, and a first end portion and a second end portion of the plurality of the fiber spokes are respectively connected to the rim.

8. The wheel according to claim 7, characterized in that: A center boss is formed on the end surface of the hub, and the cross section of the center boss is a polygon; the center boss is sleeved and connected in the fork portion.

9. The wheel according to claim 8, characterized in that: A limiting boss is also formed on the end surface of the hub, a spoke mounting groove is formed between the central boss and the limiting boss, and the forked portion is mounted on the spoke mounting groove.

10. The wheel according to claim 9, characterized in that: The limiting boss is abutted against the edge of the spoke body of the fiber spoke.

11. A wheel, comprising fiber spokes, and a rim and a hub connected by the fiber spokes, wherein the first end and the second end of the plurality of fiber spokes are respectively connected to the rim; the fiber spoke comprises a spoke body, the two ends of the spoke body are connected with the first end and the second end, the first end and the second end are connected to the rim; a fork is formed in the middle of the spoke body, and the plurality of fiber spokes are connected to the hub as a whole through the fork; a spoke center opening is formed in the middle of the fork, the fork of the fiber spoke is formed with at least one pair of limiting surfaces arranged opposite to each other on the inner side of the spoke center opening, a center boss is formed on the end surface of the hub, and the cross-section of the center boss is polygonal; the center boss is sleeved and connected in the fork, and the central axis of the hub passes through the spoke center opening; the limiting surfaces arranged opposite to each other are abutted and matched with the boss side faces of the center boss.

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