A spoke and rim connecting structure, a wheel and a bicycle

Abstract

The utility model relates to a spoke and wheel rim's connecting structure, wheel and bicycle, be provided with fixed connecting piece in the inner chamber of wheel rim, the spoke is swinged to connect with locking piece, and the first end cap for blocking limiting locking piece is equipped with to the end of spoke, locking piece and fixed connecting piece screw thread connection to realize the tightening fixed of spoke, at least one end of spoke is equipped with first rotation stop portion, and first rotation stop portion is used for limiting spoke to rotate around its axis, through setting fixed connecting piece in the inner chamber, can avoid the perforation processing on wheel rim outer ring, thereby guaranteeing the integrity of wheel rim outer ring structure, through locking piece and fixed connecting piece connection to tighten spoke, and the loading and unloading of the tire on the wheel will not affect the loading and unloading of the spoke and the wheel rim, which is beneficial to the assembly, adjustment and maintenance of the wheel. In addition, the end of the spoke and the wheel rim does not need to be threaded, and the processing technology of the spoke is simpler.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a connection structure between spokes and rim, a wheel, and a bicycle. Background Technology

[0002] Current bicycle rim designs generally include spoke mounting holes 15 (which penetrate the rim 10), such as... Figure 1 As shown, one end of the spoke is connected to the hub, while the other end is secured to its threaded end by a nut passing through the spoke mounting hole 15. However, this structure requires drilling into the rim 10, compromising its structural integrity and potentially negatively impacting its strength and rigidity. Furthermore, if the bicycle spokes become loose, need replacement, require adding decorations, adjusting spoke tension, or adjusting the wheelset's centering, the tire must be removed to expose the spoke mounting hole 15, making spoke installation, removal, or tightening / untightening cumbersome. Utility Model Content

[0003] The purpose of this utility model is to provide a spoke-to-rim connection structure, wheel and bicycle, the rim of which does not require perforation, thus ensuring the integrity of the rim structure, and the connection between the spokes and the rim is simple and convenient, without the need to remove the tire.

[0004] To achieve the above objectives, this utility model discloses a connection structure between a spoke and a rim. A fixed connector is provided in the inner cavity of the rim, and a locking member is movably connected to the spoke. The end of the spoke is provided with a first end cap for blocking and limiting the locking member. The locking member is threadedly connected to the fixed connector to achieve tension and fixation of the spoke. At least one end of the spoke is provided with a first anti-rotation part, which is used to restrict the spoke from rotating around its axial direction.

[0005] With the above setup, by pre-setting a fixed connector in the rim, drilling on the outer rim can be avoided, thus ensuring the integrity of the rim's outer structure. The spokes are secured to the fixed connector via a locking component, a simple and convenient connection. Furthermore, the installation or removal of the tire does not affect the installation or removal of the spokes and rim, facilitating wheel assembly, adjustment, and maintenance. Additionally, no threads are required at the end where the spoke connects to the rim, simplifying the spoke manufacturing process. A first anti-rotation part restricts the spoke's rotation around its axial direction, preventing the locking component from loosening. It also helps to shape the spoke when its cross-section is non-circular. Moreover, the first end cap's blocking and limiting effect on the locking component ensures that the spokes are taut and fixed when the locking component and the fixed connector are threaded together.

[0006] Preferably, the first anti-rotation part is located on one side of the first end cap of the spoke, and the fixed connector is provided with a second anti-rotation part. The first anti-rotation part and the second anti-rotation part are engaged to restrict the spoke from rotating about its axis. By engaging the first anti-rotation part and the second anti-rotation part, the spoke can be effectively prevented from rotating about its axis, and the second anti-rotation part can be hidden.

[0007] Preferably, the cross-sectional shape of the first anti-rotation part is non-circular, and the shape of the second anti-rotation part is adapted to the shape of the first anti-rotation part, with the first and second anti-rotation parts interlocking. This arrangement can effectively ensure that the spokes do not rotate.

[0008] Preferably, the locking member has external threads on its outer wall, and the fixing connector has a threaded hole that mates with the locking member. The threaded hole is a blind hole, and the outside of the fixing connector is sealed to the rim. With this configuration, the connection point between the spokes and the rim does not require sealing, water will not enter the rim's inner cavity, and assembly and maintenance are facilitated.

[0009] Preferably, when the locking member is tightened with the fixing connector, both the locking member and the first end cap are hidden within the rim. This arrangement conceals the ends of the locking member and spokes, improving the wheel's aesthetics and reducing wind resistance during riding.

[0010] Preferably, the locking member has a stepped hole, and the first end cap is placed in the stepped hole. With this arrangement, the first end cap extends less beyond the length of the locking member, making it less likely to interfere with the fixed connector and the wheel rim. At the same time, the first end cap placed in the stepped hole can support the stepped hole, preventing deformation of the stepped hole to a certain extent and ensuring a reliable connection between the locking member and the fixed connector.

[0011] Preferably, the locking member has a mating part for rotating with a tool. This mating part facilitates the rotation of the locking member and prevents damage to the external threads on the locking member.

[0012] Preferably, the fixing connector is provided with at least one limiting part to increase the contact area. This arrangement can improve the stability of the fixing connector in the wheel rim.

[0013] This utility model also discloses a wheel, including a rim, a hub, and several spokes. One end of each spoke is connected to the hub, and the other end is connected to the rim. Specifically, the spokes and the rim employ the connection structure described above. This configuration results in a wheel that is easy to assemble and disassemble, maintains good rim integrity, and exhibits good structural stability.

[0014] Preferably, at least the rims are made of carbon fiber. This configuration results in lighter wheels and higher stability.

[0015] In addition, this utility model also discloses a bicycle that includes the aforementioned wheels. Its wheel structure offers good stability and a better user experience.

[0016] This utility model has the following beneficial effects: 1. By pre-installing a fixed connector in the rim, drilling into the rim can be avoided, thus ensuring the integrity of the rim structure. The spokes are secured to the fixed connector via locking devices at their ends, making the connection simple and convenient. Furthermore, the installation or removal of the tire does not affect the installation or removal of the spokes and rim, facilitating wheel assembly, adjustment, and maintenance. Additionally, no threads are required at the end where the spoke connects to the rim, simplifying the spoke manufacturing process. Specifically, a first anti-rotation part restricts the spoke's rotation around its axial direction, preventing the locking device from loosening. Additionally, when the spoke cross-section is non-circular, it also helps to shape the spoke.

[0017] 2. When the rim is made of carbon fiber, the connection structure design between the rim and spokes in this invention avoids potential damage to the carbon fiber structure, allowing for a lighter design. This weight reduction gives the rim a significant advantage in the competitive bicycle market, with a weight reduction ranging from 30 to 50 grams. This lightweight design not only improves product performance but also enhances safety, providing consumers with a more attractive option, especially in the high-performance bicycle market where optimal performance and weight optimization are sought.

[0018] 3. The connection structure design between the rim and spokes in this invention provides a significant advantage in airtightness, thereby improving riding stability and safety during use. By eliminating the need for machining spoke mounting holes (located on the outside of the rim), the stress-bearing area of ​​the product is increased, resulting in improved structural strength at the connection point compared to traditional designs that require machining spoke mounting holes. This enhanced connection strength and larger stress-bearing area work together to ensure the rim's performance stability under various riding conditions. Through this design, the carbon fiber rim achieves both structural and functional optimization while maintaining its lightweight nature, providing a more advanced and reliable riding experience.

[0019] 4. The connection structure design between the rim and spokes in this invention makes wheel assembly, tuning, and subsequent use and maintenance more convenient and efficient. In particular, adjusting spoke tension does not require removing the tire, significantly improving ease of operation. This means that even after the tire is in place and inflated, users can easily calibrate and adjust the spoke tension and wheel centering. This functionality simplifies wheel maintenance and ensures optimal performance and accuracy over long-term use, significantly improving user-friendliness and practicality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an existing car wheel.

[0021] Figure 2 This is a schematic diagram of the wheel in Example 1.

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.

[0023] Figure 4 This is a schematic diagram (sectional view) showing the connection between the rim and spokes in Example 1.

[0024] Figure 5 This is a schematic diagram (expanded view) of the fixed connector, locking member and spokes in Embodiment 1.

[0025] Figure 6 This is a schematic diagram of the second end of the spoke in Example 1.

[0026] Figure 7 This is a schematic diagram of the second end of the spoke in Example 1 from another perspective.

[0027] Figure 8 This is a schematic diagram of the fixed connector in Embodiment 1.

[0028] Explanation of symbols for main components: Wheel rim 10, fixed connector 11, threaded hole 12, limiting part 13, clearance hole 14, spoke assembly hole 15, second anti-rotation part 16; Flower drum 20; Spoke 30, locking member 32, first end cap 33, stepped hole 34, mating part 35, locking head 37, first anti-rotation part 38. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1 like Figures 2-8 As shown, this embodiment discloses a wheel, which includes a rim 10, a hub 20, and a plurality of spokes 30. In this embodiment, the rim 10 and the spokes 30 are preferably made of carbon fiber material. One end of the spoke 30 (hereinafter referred to as the first end of the spoke 30) is connected to the hub 20, and the other end of the spoke 30 (hereinafter referred to as the second end of the spoke 30) is connected to the rim 10. The connection method between the spokes 30 and the hub 20 is prior art and will not be described in detail.

[0031] The second end of the spoke 30 is connected to the rim 10 using the following structure: Specifically, a plurality of fixing connectors 11 are pre-installed in the inner cavity of the rim 10, with each fixing connector 11 corresponding to one of the spokes 30. Each fixing connector 11 has a threaded hole 12 and at least one limiting part 13 for abutting against the rim 10. The limiting part 13 can be a raised edge on the outer periphery of the fixing connector 11. By providing the limiting part 13, the contact area between the fixing connector 11 and the rim 10 can be increased, which also increases the force-bearing area of ​​the fixing connector 11, thereby improving the stability of the fixing connector 11 within the rim 10. On the inner side of the rim 10, there are mounting holes that correspond one-to-one with the fixing connectors 11 and communicate with the threaded holes 12.

[0032] A locking member 32 is movably connected to the second end of the spoke 30, and the locking member 32 is in a stop-fitting engagement with the second end of the spoke 30. The locking member 32 has external threads and is threadedly connected to the threaded hole 12. Specifically, the locking member 32 is sleeved on the spoke 30, and the locking member 32 is rotatably connected to the spoke 30 in the circumferential direction of the spoke. A first end cap 33 is provided at the second end of the spoke 30, and a stepped hole 34 is provided on the locking member 32 that is in a stop-fitting engagement with the first end cap 33. The first end cap 33 can block the small-diameter section of the stepped hole 34, so that after the locking member 32 is threadedly connected to the threaded hole 12, the spoke 30 can be tightened and fixed. Through the engagement of the first end cap 33 and the stepped hole 34, the locking member 32 is stopped from the second end of the spoke 30, and the locking member 32 cannot be dislodged from the second end of the spoke 30. In addition, the first end cap 33 is partially placed in the stepped hole 34, so the first end cap 33 can be designed to be longer to improve the reliability of the first end cap 33. The first end cap 33 can be designed to match the large diameter section of the stepped hole 34 to provide support for the stepped hole 34. Of course, when the structural strength of the locking member 32 is sufficient, the first end cap 33 can be designed to be smaller to reduce weight.

[0033] Because the locking member 32 and the first end cap 33 are in a stop-fitting arrangement, the locking member 32 is threadedly connected to the fixed connector 11 and tightened, thus securing the second end of the spoke 30. The locking member 32 passes through the mounting hole and connects to the fixed connector 11.

[0034] To facilitate the rotation of the locking member 32, a mating part 35 is provided on the locking member 32 for cooperating with a tool to rotate the locking member 32. The mating part 35 can be two grooves symmetrically arranged on the locking member 32. By providing the mating part 35, the rotation of the locking member 32 is facilitated, and damage to the external threads on the locking member 32 is avoided.

[0035] In addition, in this embodiment, the locking member 32 is required to be screwed into the threaded hole 12, or the locking member 32 is required to be built into the wheel rim 10. This ensures that when the locking member 32 is tightened, it is hidden in the mounting hole of the wheel rim 10, thereby concealing the locking member 32 and improving the aesthetics of the wheel. The mating part 35 is designed as a groove to facilitate the concealment of the locking member 32.

[0036] To prevent water from entering the inner cavity of the rim 10, which could lead to increased weight, abnormal noise, and other problems, this embodiment also incorporates the following measures: the threaded hole 12 is configured as a blind hole, meaning that the threaded hole 12 has only one opening. At the same time, the outer edge of the mounting hole of the rim 10 is sealed to the outside of the fixed connector 11. This prevents the mounting hole from communicating with the inner cavity of the rim 10. The connection between the rim 10 and the spokes 30 is a single-opening blind hole, preventing water from entering the inner cavity of the rim 10 from the connection point between the rim 10 and the spokes 30, thus achieving a seal-free solution.

[0037] Furthermore, a first anti-rotation part 38 is provided at the second end of the spoke 30, and a second anti-rotation part 16 is provided at the bottom of the threaded hole 12 to cooperate with the first anti-rotation part 38 in preventing rotation. This is achieved by setting the cross-sectional shape of the first anti-rotation part 38 to be non-circular, and making the second anti-rotation part 16 a hole whose shape matches the shape of the first anti-rotation part. The bottom of the threaded hole 12 is partially recessed to form the second anti-rotation part 16. The first anti-rotation part 38 is inserted into the second anti-rotation part 16 to achieve anti-rotation. In this embodiment, the cross-sectional shape of the first anti-rotation part 38 is square, and the second anti-rotation part 16 is a square hole. Inserting the first anti-rotation part 36 into the second anti-rotation part 16 prevents the spoke 30 from rotating. Of course, the second anti-rotation part 16 can also be a non-circular hole such as a semi-circular hole, a triangular hole, or a hexagonal hole. By using the first anti-rotation part 38 and the second anti-rotation part 16 to prevent rotation, the assembled spoke 30 can be guaranteed not to rotate, and the locking part 32 can be prevented from loosening. In addition, when the cross-section of the spoke 30 is not circular, it can also play a role in shaping the spoke 30.

[0038] Example 2 The difference between this embodiment and Embodiment 1 is that the second anti-rotation part 16 (hole) penetrates the bottom of the threaded hole 12. After the wheel is assembled, the connection node (assembly hole) between the rim 10 and the spokes 30 is sealed (e.g., by applying sealant or using a sealing plug). This design simplifies the structure of the fixing connector 11 and facilitates its manufacturing, but requires an additional sealing process during assembly.

[0039] Example 3 The difference between this embodiment and Embodiments 1 and 2 is that a first anti-rotation part 38 is also provided at the first end of the spoke 30, and a third anti-rotation part that cooperates with the first anti-rotation part 38 is provided on the hub 20. The cooperation relationship between the first anti-rotation part 38 and the third anti-rotation part can be referred to the cooperation relationship between the first anti-rotation part 38 and the second anti-rotation part 16, and will not be repeated here.

[0040] Example 4 Based on Embodiment 3, this embodiment omits the first anti-rotation part 38 provided at the second end of the spoke 30, and correspondingly, the second anti-rotation part 16 on the fixed connector 11 is also omitted.

[0041] Example 5 This embodiment discloses a bicycle that includes the wheels described in any of the above embodiments.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection structure between spokes and rim, characterized in that: A fixed connector is provided in the inner cavity of the rim, a locking member is movably connected to the spoke, and a first end cap for blocking and limiting the locking member is provided at the end of the spoke. The locking member is threadedly connected to the fixed connector to achieve tension and fixation of the spoke. At least one end of the spoke is provided with a first anti-rotation part, which is used to restrict the spoke from rotating around its axial direction.

2. The connection structure between the spokes and the rim according to claim 1, characterized in that: The first anti-rotation part is provided on one side of the first end cap of the spoke, and the fixed connector is provided with a second anti-rotation part. The first anti-rotation part and the second anti-rotation part cooperate to restrict the spoke from rotating around its axial direction.

3. The connection structure between the spokes and the rim according to claim 2, characterized in that: The first anti-rotation part has a non-circular cross-sectional shape, and the second anti-rotation part is a hole that is inserted and fitted with the first anti-rotation part. The shape of the second anti-rotation part is adapted to the shape of the first anti-rotation part.

4. The connection structure between the spokes and the rim according to claim 1, characterized in that: The locking member has an external thread on its outer wall, and the fixing member has a threaded hole that mates with the locking member. The threaded hole is a blind hole, and the outside of the fixing member is sealed to the wheel rim.

5. The connection structure between the spokes and the rim according to claim 1, characterized in that: When the locking member is tightened with the fixed connecting member, both the locking member and the first end cap are hidden in the wheel rim.

6. The connection structure between the spokes and the rim according to claim 1, characterized in that: The locking member has a stepped hole, and the first end cap is placed in the stepped hole.

7. The connection structure between the spokes and the rim according to claim 1, characterized in that: The locking member is provided with a mating part for rotating the locking member in cooperation with a tool; the fixed connecting member is provided with at least one limiting part for increasing the contact area.

8. A wheel, comprising a rim, a hub, and a plurality of spokes, wherein one end of each spoke is connected to the hub and the other end of each spoke is connected to the rim, characterized in that: The spokes and rim adopt the connection structure described in any one of claims 1 to 7.

9. The wheel according to claim 8, characterized in that: At least the rims are made of carbon fiber.

10. A bicycle, characterized in that: Includes the wheel as described in claim 8 or 9.

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