Spoke, hub and spoke and hub connecting structure

Abstract

The utility model discloses a spoke, a hub and a spoke and hub connecting structure, the spoke comprises a spoke body, one end of the spoke body is provided with a first spoke head connected with a hub, the other end of the spoke body is provided with a second spoke head connected with the hub, and the spoke body is formed by folding and weaving at least one fiber. The spokes are provided with the lock catch structures, the hub is provided with the lock hook mechanisms, the connection between the spokes and the hub is locked by means of tension of the spokes, complex fasteners are omitted, the weight of the bicycle is reduced, and the bicycle is convenient to use. And the light weight of the bicycle is further realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel sets, and discloses a spoke, a hub and a connection structure between the spoke and the hub. Background Art

[0002] A bicycle is a relatively common sports, fitness, leisure and entertainment product. With the increasing improvement of living conditions, bicycles have once again become popular transportation and fitness tools among residents in various countries, especially in developed countries. High-quality and racing bicycles are increasingly favored by consumers.

[0003] Spokes and hubs are important components of bicycles. They are not only the supporting components of the wheel set but also the power source of the bicycle. Athletes or cyclists convert the power generated by pedaling into the rotation of the wheels through the hub and spokes.

[0004] In the field of bicycle manufacturing, lightweight design has always been an important research direction. Lightweight design can improve the controllability, acceleration and overall performance of bicycles. As important components of bicycle wheels, the quality and structural design of spokes and hubs directly affect the lightweight level and performance of bicycles.

[0005] Traditional bicycle spokes are usually made of metal materials such as steel or aluminum alloy. These metal materials have certain strength and durability, but there are also some disadvantages. First, metal spokes are relatively heavy, bringing an unnecessary burden to the overall bicycle. Especially for cyclists who need to ride for a long time or participate in competitive races, weight becomes an important factor affecting their performance. Second, the traditional way of connecting spokes to the hub usually requires the use of complex fasteners, and the complex fasteners also increase the weight of the bicycle. Summary of the Invention

[0006] To solve the above problems, the utility model provides a spoke, a hub and a connection structure between the spoke and the hub. The connection between the spoke and the hub relies on the tension of the spoke for locking, eliminating the need for complex fasteners, reducing the weight of the bicycle, and further realizing the lightweight of the bicycle.

[0007] The technical solution provided by the utility model is as follows:

[0008] On the one hand, a spoke includes a spoke body. The spoke body is woven from fiber lines. One end of the spoke body has a first spoke head for connecting to the wheel hub, and the other end has a second spoke head for connecting to the hub. The second spoke head is a lock structure.

[0009] In some embodiments, the spoke body is woven by folding at least one fiber line in half. The head and tail of the fiber line are connected to each other and connected to the first spoke head, and a lock structure is left at the folding point of the fiber line.

[0010] In some embodiments, the braided fiber wire of the spoke body is PBO fiber.

[0011] In some embodiments, the first spoke head is a threaded rod, and a wrench plane is provided at the connection of the head and tail of the fiber.

[0012] On the other hand, a hub, applying the above-mentioned spokes, includes a hub body, a shaft rod, and a spoke connection part. The spoke connection part is arranged on the periphery of the shaft rod, and a plurality of groups of hook structures for fixing the second spoke head are evenly distributed on the spoke connection part, and each group of hook structures fixes two spokes.

[0013] In some embodiments, the hook structure includes two limiting grooves symmetrically opened on the spoke connection part. The opening of the limiting groove is the hook entrance, and the end of the limiting groove is the hook fixing part.

[0014] In some embodiments, two adjacent limiting grooves share a hook entrance.

[0015] In some embodiments, the hook structure includes a pin shaft. A circular groove is opened on the side surface of the spoke connection part towards its axis direction, and a plurality of pin holes are opened on the end surface of the spoke connection part at the depth position of the groove. After the second spoke heads of two spokes are inserted side by side into the groove, the pin shaft passes through the pin holes and sequentially passes through two hook structures to fix the spokes.

[0016] In some embodiments, a plurality of through grooves are opened on the end surface of the spoke connection part, and the through grooves are triangular in shape.

[0017] In some embodiments, the hook mechanism includes a locking hole opened on the spoke connection part. After one end of the spoke body passes through the locking hole, a locking structure is formed.

[0018] In some embodiments, the locking hole is opened on the end surface of the spoke connection part.

[0019] In some embodiments, the spoke connection part is a protrusion evenly distributed on the periphery of the shaft rod, the locking hole is opened on the protrusion, and two locking holes are provided on each protrusion.

[0020] In some embodiments, after the spokes are fixed, diversion grooves conforming to the surface shape of the spokes are opened at the contact positions with the spoke connection part.

[0021] The present utility model also provides a spoke and hub connection structure, which is applied to the above-mentioned spokes and hubs.

[0022] In summary, the beneficial effects of the present utility model are as follows:

[0023] (1) The spokes of the present utility model are formed by folding and braiding fibers. When they are under tension, the braided fiber wires tighten with each other, improving the anti-torsion performance and anti-bending property of the spokes.

[0024] (2) The spokes of the present utility model have a locking structure, and the hub has a locking hook mechanism. The connection between the spokes and the hub is tightened by the tension of the spokes, eliminating complex fasteners, reducing the weight of the bicycle, and further realizing the lightweight of the bicycle.

[0025] (3) The spokes of the present utility model adopt PBO fiber wires, which can effectively enhance the impact resistance of the spokes, thus further ensuring the stability of the wheel set.

[0026] (4) In one embodiment of the present utility model, a circle of grooves is opened on the side surface of the spoke connection part towards its axis direction, saving a large amount of materials for the spoke connection part and further reducing the weight of the hub.

[0027] (5) In one embodiment of the present utility model, the two spokes fixed on the same set of locking hook structures do not need to be cross - arranged. When applying a hub with the same diameter, the spoke length is short, further improving the lightweight of the bicycle while also saving the use of spoke materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the hub of the second embodiment of the present utility model;

[0029] Figure 2 It is a side view of the hub of the second embodiment of the present utility model;

[0030] Figure 3 It is a schematic diagram of the connection between the spoke and the hub of the second embodiment of the present utility model;

[0031] Figure 4 It is a schematic diagram of the hub of the third embodiment of the present utility model;

[0032] Figure 5 It is a side view of the hub of the third embodiment of the present utility model;

[0033] Figure 6 It is a top view of the hub of the third embodiment of the present utility model;

[0034] Figure 7 It is a schematic diagram of the connection between the second spoke head and the pin shaft of the third embodiment of the present utility model;

[0035] Figure 8 It is a schematic diagram of the connection between the spoke and the hub of the third embodiment of the present utility model;

[0036] Figure 9 It is a schematic diagram of the spoke connection part of the fourth embodiment of the present utility model;

[0037] Figure 10 It is a schematic diagram of the hub of the fifth embodiment of the present utility model;

[0038] Figure 11 This is a schematic diagram of the spoke body structure of the present utility model.

[0039] The reference numerals are as follows:

[0040] 1, spoke body; 2, first spoke head; 3, second spoke head; 4, hub body; 5, shaft rod; 6, spoke connection part; 21, wrench plane;

[0041] 611, limiting groove; 612, lock buckle entrance; 613, lock buckle fixing part;

[0042] 621, pin shaft; 622, groove; 623, pin hole;

[0043] 631, lock hole. Specific embodiments

[0044] In order to deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0045] Embodiment 1

[0046] This embodiment provides a spoke, as Figure 8 shown, including a spoke body 1. In this embodiment, the spoke body 1 is preferably woven from at least one PBO fiber wire. In other embodiments, it can also be woven by twisting multiple PBO fiber wires together, or other fibers such as carbon fiber or steel fiber can be used.

[0047] Among them, PBO fiber is preferred. PBO fiber is the abbreviation of poly(p-phenylene benzobisoxazole) fiber and is a reinforcing material for composite materials developed by the United States in the 1980s for the development of aerospace industries. In terms of performance, PBO fiber has very excellent physical and mechanical properties and chemical properties. The strength of PBO fiber not only exceeds that of steel fiber, but also can surpass that of carbon fiber. Moreover, the impact resistance, friction resistance and dimensional stability of PBO fiber are all excellent.

[0048] In this embodiment, the spoke body 1 is woven by folding at least one fiber wire in half. The head and tail of the fiber wire are connected to each other and connected to the first spoke head 2. A lock buckle structure is left at the folding place of the fiber wire, and the lock buckle structure forms the second spoke head 3.

[0049] Specifically, taking a PBO fiber wire as an example, the diameter of a single PBO fiber wire in this embodiment is 0.9 mm. First, fold a PBO fiber wire in half, leaving a buckle at the folding point of the fiber wire without braiding. Start braiding from the end of the buckle. The diameter of the spoke body 1 formed by braiding is 1.8 mm. The strength of the braided PBO fiber wire is greater than that of a single PBO fiber wire. Especially when it is under tension, the braided fiber wires tighten each other, improving the anti-torsion performance and anti-bending property of the spoke.

[0050] The end of the PBO fiber wire after braiding is connected to the first spoke head 2 through the wrench plane 21. The first spoke head 2 is a threaded rod, and the first spoke head 2 is connected to the hub through threads. On the one hand, the wrench plane 21 can fix the end of the braided fiber wire, and on the other hand, it can provide a support point for shaping the spoke. The wrench can be clamped on the wrench plane 21 to shape the spoke to prevent twisting during the shaping process.

[0051] Furthermore, the braided fiber wire is further cured. It is soaked in a thermosetting resin diluent, taken out and dried after soaking to harden the resin, and an epoxy resin-based PBO fiber reinforced prepreg is laid and rolled. After thermosetting and grinding, it is then connected to the first spoke head 2 to form the spoke body 1, further improving the strength of the spoke.

[0052] Of course, in other embodiments, the buckle structure can also be formed by tying a knot after the spoke body 1 passes through the hole of the buckle structure with a hole.

[0053] Embodiment 2

[0054] This embodiment provides a hub. Please refer to Figures 1-3 , and apply the spokes in Embodiment 1, including a hub body 4, a shaft rod 5, and a spoke connection part 6. Among them, the hub body 4 is a carrier, with a shaft rod 5 passing through the middle thereof. The spoke connection part 6 is arranged on the hub body 4 and is used to connect with the spokes.

[0055] The spoke connection part 6 is arranged around the shaft rod 5. The spoke connection part 6 is a flange structure. A number of groups of hook structures for fixing the second spoke head 3 are evenly distributed on the spoke connection part 6. Each group of hook structures cooperates with two buckle structures to fix two spokes.

[0056] Specifically, in this embodiment, there are 7 sets of locking hook structures, and the 7 sets of locking hook structures are evenly distributed around the center of the spoke connecting part 6. The locking hook structure includes two limiting grooves 611 symmetrically opened on the spoke connecting part 6. The width of the limiting groove 611 allows the locking buckle structure to pass through. The limiting groove 611 has an opening on the side of the spoke connecting part 3. The opening of the limiting groove 611 is the locking buckle entrance 612, and the other end of the limiting groove 611 is the locking buckle fixing part 613. The locking buckle fixing part 613 provides support for the fixation of the spoke.

[0057] Due to the limiting grooves 611 symmetrically arranged on both sides of the locking hook structure, the side view structure of the locking hook structure is similar to a "T" shape.

[0058] During the assembly of the spoke, the locking buckle structure is sleeved in from the locking buckle entrance 612, passes through the limiting groove 611 to reach the locking buckle fixing part 613 at the end of the limiting groove 611. The spoke is tightened on the hub by a thread at the other end. The locking buckle structure and the locking hook structure are tightened by the tension of the spoke. In this embodiment, the connection between the spoke and the hub is tightened by the tension of the spoke, eliminating the complex fasteners at the second spoke head 3, reducing the weight of the bicycle, and further realizing the lightweight of the bicycle.

[0059] Since the spoke needs to be tensioned towards the locking buckle fixing part 613, the two spokes fixed on the same set of locking hook structures are arranged in a cross pattern.

[0060] Furthermore, in this embodiment, multiple sets of locking buckle structures are arranged adjacent to each other. Therefore, the limiting grooves 611 on both sides of the locking buckle structure are adjacent. The two adjacent limiting grooves 611 extend in opposite directions respectively, and the two adjacent limiting grooves 611 share a locking buckle entrance 612, improving the convenience of assembly.

[0061] After the spoke is fixed, a diversion groove that fits the surface shape of the spoke is opened at the contact with the spoke connecting part 6. The diversion groove plays a role in limiting the assembly of the spoke, further improving the stability of the spoke after assembly.

[0062] Embodiment Three

[0063] The difference between this embodiment and Embodiment Two is that the provided locking hook structures are different. In this embodiment, there are 8 sets of locking hook structures, and the 8 sets of locking hook structures are evenly distributed around the center of the spoke connecting part 6. Specifically:

[0064] Please refer to Figures 4-7, in this embodiment, the limiting groove 611 in Embodiment 2 is cancelled, and a circular groove 622 is formed on the side surface of the spoke connecting portion 6 in the direction of its axis. The groove 622 is used for inserting the spokes, and the width of the groove 622 is twice the width of the spoke. Seven pin holes 623 are formed at the depth position of the groove 622 on the end surface of the spoke connecting portion 6. The seven pin holes 623 are evenly distributed around the center of the spoke connecting portion 6. The pin holes 623 penetrate through the two end surfaces of the spoke connecting portion 6. After the second spoke heads 3 of two spokes are inserted side by side into the groove 622, the pin shaft 621 passes through the two locking structures in sequence within the pin holes 623 to fix the spokes. The pin shaft 621 serves as the main body of the locking hook structure and provides support for the fixation of the spokes.

[0065] The advantage of this embodiment compared with Embodiment 2 is that a circular groove 622 is formed on the side surface of the spoke connecting portion 6 in the direction of its axis, saving a large amount of material of the spoke connecting portion 6 and further reducing the weight of the hub.

[0066] On the other hand, since the spokes in Embodiment 2 need to be tensioned towards the locking portion 613, the two spokes fixed on the same set of locking hook structures need to be arranged in a cross manner.

[0067] In this embodiment, however, the second spoke heads 3 of the two spokes are inserted side by side into the groove 622 and fixed by the pin shaft 621. The two spokes fixed on the same set of locking hook structures do not need to be arranged in a cross manner. When using the same diameter of the wheel hub, the length of the spokes used in this embodiment is obviously shorter than that in Embodiment 2. While further improving the lightweight of the bicycle, it also saves the use of spoke materials.

[0068] The locking hook structure includes a pin shaft 621. A circular groove 622 is formed on the side surface of the spoke connecting portion 6 in the direction of its axis. A number of pin holes 623 are formed at the depth position of the groove 622 on the end surface of the spoke connecting portion 6. After the second spoke heads 3 of two spokes are inserted side by side into the groove 622, the pin shaft 6321 passes through the two locking structures in sequence within the pin holes 623 to fix the spokes.

[0069] It should be noted that in order to fix the pin shaft 621, the pin shaft 621 can be bonded or screwed into the pin hole 623, or after the pin shaft 621 is inserted into the pin hole 623, limiting members are arranged at both ends of the pin shaft 621 to limit it.

[0070] Furthermore, a number of through grooves 624 are formed on the end surface of the spoke connecting portion 6. The through grooves 624 are triangular in shape. The through grooves 624 are for further reducing the weight of the hub, and the triangular through grooves 624 have higher stability.

[0071] This embodiment also discloses a connection structure between the spoke and the hub. The spoke is engaged with the locking hook structure on the spoke connection part 6 of the hub through the locking structure on the second spoke head 3. At the same time, the connection between the spoke and the hub is tightened by the tension of the spoke, eliminating complex fasteners, reducing the weight of the bicycle, and further realizing the lightweight of the bicycle.

[0072] Embodiment 4

[0073] The difference between this embodiment and Embodiment 2 and Embodiment 3 lies in the provided different locking hook structures. In this embodiment, there are 6 groups of locking hook structures, and the 6 groups of locking hook structures are evenly distributed around the center of the spoke connection part 6. Specifically:

[0074] Please refer to Figure 9 , the locking hook mechanism includes a locking hole 631 opened on the spoke connection part 6. In this embodiment, the locking hole 631 is opened on the end face of the spoke connection part 6. During assembly, one end of the spoke body 1 passes through the locking hole 631, and then the spoke body 1 is knotted or glued to form a locking buckle and fixed on the locking hole 631. The spoke body 1 is fixed by the cooperation of the locking buckle structure and the locking hole, and is tightened by the tension of the spoke.

[0075] Embodiment 5

[0076] The difference between this embodiment and Embodiment 4 lies in the structure of the spoke connection part 6 provided and the setting position of the locking hole 631. In this embodiment, there are 6 groups of locking hook structures, and the 6 groups of locking hook structures are evenly distributed around the center of the spoke connection part 6. Specifically:

[0077] Please refer to Figure 10 , the spoke connection part 6 is a protrusion evenly distributed around the outer periphery of the shaft rod 5, the locking hole 631 is opened on the protrusion, and there are two locking holes 631 on each protrusion. During assembly, one end of the spoke body 1 passes through the locking hole 631, and then the spoke body 1 is knotted or glued to form a locking buckle and fixed on the locking hole 631. The spoke body 1 is fixed by the cooperation of the locking buckle structure and the locking hole, and is tightened by the tension of the spoke.

[0078] It should be noted that in the drawings or the text of the specification, the implementation manners that are not depicted or described are all forms known to those of ordinary skill in the art and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or manners mentioned in the embodiments.

[0079] It should also be noted that this article can provide demonstrations of parameters containing specific values. However, these parameters do not need to be exactly equal to the corresponding values, but can approximate the corresponding values within an acceptable error tolerance or design constraint. Directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., are only references to the directions in the accompanying drawings and are not used to limit the protection scope of this application.

[0080] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. A spoke, characterized in that, It includes a spoke body (1) which is woven by fiber wires. One end of the spoke body (1) has a first spoke head (2) connected to the wheel hub, and the other end has a second spoke head (3) connected to the hub. The second spoke head (3) is a buckle structure.

2. The spoke according to claim 1, wherein The spoke body (1) is woven by folding at least one fiber wire in half. The head and tail of the fiber wire are connected to each other and connected to the first spoke head (2), and the buckle structure is left at the folding place of the fiber wire.

3. The spoke according to claim 2, wherein The woven fiber wire of the spoke body (1) is PBO fiber.

4. The spoke according to claim 1, wherein The first spoke head (2) is a threaded rod, and a wrench plane (21) is provided at the connection of the head and tail of the fiber.

5. A flower drum, characterized in that, Applying the spoke according to any one of claims 1-4, it includes a hub body (4), a shaft rod (5) and a spoke connection part (6). The spoke connection part (6) is arranged around the shaft rod (5), and a plurality of groups of locking hook structures for fixing the second spoke head (3) are evenly distributed on the spoke connection part (6), and each group of the locking hook structures fixes two of the spokes.

6. The hub according to claim 5, wherein, The locking hook structure includes two limiting grooves (611) symmetrically opened on the spoke connection part (6). The opening of the limiting groove (611) is a buckle entrance (612), and the end of the limiting groove (611) is a buckle fixing part (613).

7. The hub according to claim 6, characterized in that, Two adjacent limiting grooves (611) share one buckle entrance (612).

8. The hub according to claim 5, characterized in that, The locking hook structure includes a pin shaft (621). A circular groove (622) is opened on the side surface of the spoke connection part (6) towards its axis direction. A plurality of pin holes (623) are opened on the end surface of the spoke connection part (6) at the depth position of the groove (622). After the second spoke heads (3) of two spokes are inserted side by side into the groove (622), the pin shaft (621) passes through the two locking hook structures in sequence in the pin holes (623) to fix the spokes.

9. The hub according to claim 8, characterized in that, A plurality of through grooves (624) are opened on the end surface of the spoke connection part (6), and the through grooves (624) are triangular in shape.

10. The hub according to claim 5, characterized in that, The locking hook structure includes a locking hole (631) opened on the spoke connection part (6). After one end of the spoke body (1) passes through the locking hole (631), a buckle structure is formed.

11. The hub according to claim 10, wherein The locking hole (631) is opened on the end surface of the spoke connection part (6).

12. The hub according to claim 10, wherein, The spoke connection part (6) is a protrusion evenly distributed around the shaft rod (5). The locking hole (631) is opened on the protrusion, and two locking holes (631) are provided on each protrusion.

13. The hub according to any one of claims 7-12, characterized in that, A diversion groove that fits the surface shape of the spoke is opened at the contact place between the fixed spoke and the spoke connection part (6).

14. A connecting structure between a spoke and a hub, characterized in that Applied to the spoke and hub according to claim 13.

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