Novel hub structure

Abstract

The novel hub structure comprises a main shaft, bearing rings are fixedly arranged at the two ends of the outer side of the main shaft in a sleeved mode, and connecting rings coaxial with the bearing rings are integrally formed on the outer sides of the bearing rings. The outer side of the connecting ring is sleeved with a plurality of arc-shaped spoke discs distributed in an annular array mode, the multiple arc-shaped spoke discs are spliced to form a complete annular structure, arc-shaped grooves matched with the connecting ring are formed in the inner sides of the arc-shaped spoke discs, the arc-shaped spoke discs are tightly sleeved with the connecting ring through the grooves, and the edge of the side face of each arc-shaped spoke disc is provided with a plurality of spoke holes distributed in an annular array mode. At least two first bolt holes are correspondingly formed in the arc-shaped spoke disc and the side face of the connecting ring, and the arc-shaped spoke disc and the connecting ring are detachably connected and fixed through first bolts. According to the structure, the arc-shaped spoke discs with different array spoke holes can be independently replaced, the hub does not need to be integrally replaced, the maintenance cost is reduced, and the adaptation flexibility is improved; meanwhile, stable installation and uniform stress of the spoke disc are guaranteed, and vibration of the wheel set is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, and in particular to a novel hub structure. Background Technology

[0002] Hubs, as the core transmission and support components of wheelsets, are widely used in bicycles, electric vehicles, and other means of transportation. They are mainly connected to the frame via a spindle, and rely on spoke discs to rotate the rim. Some hubs also integrate brake components for braking. Their structural performance directly affects the performance of the wheelset. Existing hubs have two main problems: First, the spoke discs are mostly fixedly connected to the hub body, making it impossible to replace them individually with spoke discs featuring different array combinations of spoke holes. The entire hub must be replaced, which is cumbersome and has high maintenance costs. Second, the brake disc installation structure is simple, making it prone to coaxiality deviation, axial movement, or circumferential deflection, resulting in uneven braking force and affecting braking reliability.

[0003] Therefore, those skilled in the art have provided a novel hub structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a novel flower drum structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel hub structure includes a main shaft, with bearing rings fixedly sleeved at both ends of the main shaft, and a connecting ring integrally formed on the outer side of the bearing ring, the connecting ring being coaxially arranged with the bearing ring;

[0007] The outer side of the connecting ring is fitted with a plurality of arc-shaped spoke discs arranged in a ring array. The plurality of arc-shaped spoke discs are spliced ​​together to form a complete ring structure. The side edge of the arc-shaped spoke discs is provided with a plurality of spoke holes arranged in a ring array. The inner side of the arc-shaped spoke discs is provided with arc-shaped grooves that are adapted to the outer wall of the connecting ring. The radius of curvature of the arc-shaped grooves is consistent with the outer radius of the connecting ring, and the arc-shaped spoke discs are tightly fitted to the outer side of the connecting ring through the arc-shaped grooves.

[0008] At least two first bolt holes are provided at corresponding positions on the sides of the arc-shaped spoke disc and the connecting ring. The at least two first bolt holes are distributed at intervals along the length direction of the arc-shaped spoke disc, and the arc-shaped spoke disc and the connecting ring are detachably connected and fixed by first bolts that are adapted to the first bolt holes.

[0009] Preferably, the thickness of the arc-shaped spoke disc is the same as the thickness of the bearing ring, the thickness of the connecting ring is the same as the inner thickness of the arc-shaped groove, and the thickness of the connecting ring is less than the thickness of the bearing ring. The inner ring surface of the arc-shaped spoke disc abuts against the outer ring surface of the bearing ring.

[0010] Preferably, three arc-shaped spoke discs are provided, the central angle of each of the three arc-shaped spoke discs is 120°, the centers of the spoke holes on the three arc-shaped spoke discs are all located on the same circumference, and the central angles between adjacent spoke holes are equal.

[0011] Preferably, the outer side of the connecting ring is provided with a plurality of breaks arranged in a ring array, the number of breaks being the same as the number of arc-shaped spoke discs, and the width of the breaks being adapted to the thickness of the arc-shaped spoke discs;

[0012] A positioning block is provided in the middle of the arc-shaped groove. The shape and size of the positioning block match the fracture surface, and the positioning block is inserted inside the fracture surface.

[0013] Preferably, a brake disc is installed at the end of the main shaft. The brake disc is coaxially arranged with the main shaft. An assembly ring is installed on the side of the brake disc near the main shaft. The assembly ring is sleeved on the outside of the main shaft. Multiple fixing lugs are arranged in a ring array on the outside of the assembly ring. The fixing lugs and the brake disc are respectively provided with second bolt holes. The fixing lugs and the brake disc are fixed by passing the second bolt through the corresponding second bolt holes.

[0014] Preferably, the assembly ring includes an integrally formed assembly base ring and a positioning collar, wherein the positioning collar is disposed at one end of the assembly base ring near the brake disc, and the outer diameter of the positioning collar is smaller than the outer diameter of the assembly base ring.

[0015] The brake disc is sleeved on the outside of the positioning collar, and the length of the positioning collar is the same as the thickness of the brake disc. The side of the mounting base ring closest to the brake disc fits against the side of the brake disc, and the fixing lug is installed on the outer ring surface of the mounting base ring.

[0016] Preferably, the inner wall of the assembly ring is provided with a plurality of anti-deviation blocks arranged in a ring array, and one end face of the main shaft is provided with a plurality of anti-deviation grooves arranged in a ring array, and the plurality of anti-deviation blocks are slidably connected to the inner side of the plurality of anti-deviation grooves in a one-to-one correspondence.

[0017] The outer ring wall at one end of the main shaft is also provided with an external thread, and an internal threaded ring is fitted through the external thread, with the end face of the internal threaded ring pressing against the side of the brake disc.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This new hub structure features a bolt-detachable connection between the arc-shaped spoke disc and the connecting ring. The arc-shaped spoke disc with different spoke hole array combinations can be replaced individually according to usage requirements without replacing the entire hub body. This reduces maintenance costs and improves structural adaptability. The arc-shaped spoke disc and connecting ring are designed with positioning blocks, joint fit, and size adaptation to ensure that the spoke disc is installed stably and the force is evenly distributed, reducing vibration during wheel assembly operation.

[0020] During brake disc assembly, the locating collar, anti-deviation block and anti-deviation groove are matched and the internal threaded ring is axially fixed to ensure the coaxiality of the brake disc and the main shaft, avoiding axial movement and circumferential deflection. At the same time, the multi-point bolt connection of the fixing lugs enhances the installation stability of the brake disc, making the braking force uniform and improving braking reliability. The overall design takes into account structural stability, usage flexibility and braking safety. Attached Figure Description

[0021] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the novel flower drum structure proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the internal threaded ring mounting structure proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the anti-deviation groove structure proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the brake disc mounting structure proposed in this utility model;

[0026] Figure 5 This is a schematic diagram of the arc-shaped spoke disc mounting structure proposed in this utility model;

[0027] Figure 6 This is a schematic diagram of the connecting ring installation structure proposed in this utility model;

[0028] Figure 7 This is a schematic diagram of the arc-shaped spoke disc structure proposed in this utility model.

[0029] In the picture: Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figure 1-7A novel hub structure includes a main shaft 1, with bearing rings 2 fixedly sleeved at both ends of the outer side of the main shaft 1, and a connecting ring 4 integrally formed on the outer side of the bearing ring 2, with the connecting ring 4 and the bearing ring 2 being coaxially arranged.

[0032] Multiple arc-shaped spoke discs 3 arranged in a ring array are fitted on the outer side of the connecting ring 4. After the multiple arc-shaped spoke discs 3 are spliced ​​together, they form a complete ring structure. Multiple spoke holes 6 arranged in a ring array are opened on the side edge of the arc-shaped spoke disc 3. An arc-shaped groove 5 adapted to the outer wall of the connecting ring 4 is opened on the inner side of the arc-shaped spoke disc 3. The radius of curvature of the arc-shaped groove 5 is consistent with the outer radius of the connecting ring 4, and the arc-shaped spoke disc 3 is tightly fitted on the outer side of the connecting ring 4 through the arc-shaped groove 5.

[0033] At least two first bolt holes 7 are provided at corresponding positions on the sides of the arc-shaped spoke disc 3 and the connecting ring 4. The at least two first bolt holes 7 are distributed at intervals along the length direction of the arc-shaped spoke disc 3, and the arc-shaped spoke disc 3 and the connecting ring 4 are detachably connected and fixed by first bolts 8 that are adapted to the first bolt holes 7.

[0034] By adopting the above technical solution, a stable mounting base is provided for the arc-shaped spoke disc 3 by fixing the bearing ring 2 at both ends of the outer side of the hub spindle 1 and integrally forming a coaxial connecting ring 4 on the outer side of the bearing ring 2. Multiple arc-shaped spoke discs 3 arranged in a ring array are tightly fitted with arc-shaped grooves 5 that fit the connecting ring 4 on the inner side, ensuring the fit between the arc-shaped spoke disc 3 and the connecting ring 4 and avoiding shaking caused by assembly gaps. The spoke holes 6 on the side edge of the arc-shaped spoke disc 3 can accurately assemble spokes, ensuring a stable connection between the wheel set and the hub. At the same time, the arc-shaped spoke disc 3 and the connecting ring 4 are detachably connected by at least two first bolt holes 7 spaced apart along the length direction of the arc-shaped spoke disc 3 and matching first bolts 8, which not only achieves a firm fixation of the arc-shaped spoke disc 3, but also facilitates later maintenance and replacement. The overall structural design takes into account both stability and maintainability.

[0035] The thickness of the arc-shaped spoke disc 3 is the same as the thickness of the bearing ring 2, the thickness of the connecting ring 4 is the same as the inner thickness of the arc-shaped groove 5, and the thickness of the connecting ring 4 is less than the thickness of the bearing ring 2. The inner ring surface of the arc-shaped spoke disc 3 abuts against the outer ring surface of the bearing ring 2.

[0036] By adopting the above technical solution, by limiting the thickness of the arc-shaped spoke disc 3 to be the same as that of the bearing ring 2, and the thickness of the connecting ring 4 to the inner side of the arc-shaped groove 5 to be the same as that of the bearing ring 2, and by making the inner ring surface of the arc-shaped spoke disc 3 abut against the outer ring surface of the bearing ring 2, it is possible to ensure the uniformity of the axial dimensions of the hub and avoid assembly interference, while also limiting the radial displacement of the arc-shaped spoke disc 3, reducing the vibration of the wheel assembly, and improving the overall structural stability.

[0037] There are three arc-shaped spoke disks 3, and the central angle of each of the three arc-shaped spoke disks 3 is 120°. The centers of the spoke holes 6 on the three arc-shaped spoke disks 3 are all located on the same circumference, and the central angles between adjacent spoke holes 6 are equal.

[0038] Using the above technical solution, three arc-shaped spoke discs 3 are designed, each with a central angle of 120°. After splicing, they completely wrap around the connecting ring 4, ensuring even force distribution on the hub. Furthermore, the spoke holes 6 are concentric, and adjacent holes have equal central angles, ensuring balanced force distribution on the spokes and reducing wheel sway. Simultaneously, the arc-shaped spoke discs 3 are detachable, allowing for the replacement of different spoke hole arrays with different arc-shaped spoke discs 3 later, improving hub versatility and reducing maintenance costs.

[0039] The outer side of the connecting ring 4 is provided with multiple breaks 9 arranged in a ring array. The number of breaks 9 is the same as the number of arc-shaped spoke discs 3, and the width of the breaks 9 is adapted to the thickness of the arc-shaped spoke discs 3.

[0040] A positioning block 10 is provided in the middle of the arc-shaped groove 5. The shape and size of the positioning block 10 match the fracture 9, and the positioning block 10 is inserted into the inside of the fracture 9.

[0041] Using the above technical solution, the break 9 of the connecting ring 4 and the positioning block 10 of the arc-shaped spoke disc 3 can be fitted and plugged in, which can quickly achieve circumferential positioning of the two and prevent the arc-shaped spoke disc 3 from rotating relative to the connecting ring 4 when the wheel set is running; no additional positioning parts are required, simplifying the assembly process, and also avoiding the loosening of the first bolt 8 due to rotation, ensuring the stability of the structure.

[0042] A brake disc 11 is installed at the end of the main shaft 1. The brake disc 11 is coaxially arranged with the main shaft 1. An assembly ring 12 is installed on the side of the brake disc 11 near the main shaft 1. The assembly ring 12 is sleeved on the outside of the main shaft 1. Multiple fixing lugs 13 are arranged in a ring array on the outside of the assembly ring 12. The fixing lugs 13 and the brake disc 11 are respectively provided with second bolt holes 14. The fixing lugs 13 and the brake disc 11 are fixed by passing through the corresponding second bolt holes 14 with second bolts 15.

[0043] With the above technical solution, the brake disc 11 installed at the end of the main shaft 1 is coaxially set with the main shaft 1, which can ensure that the force is evenly transmitted to the main shaft 1 during braking, and avoid the main shaft 1 bending or the braking function being affected due to eccentric force. The mounting ring 12 of the brake disc 11 near the main shaft 1 is sleeved on the outside of the main shaft 1, providing a stable mounting base for the brake disc 11. Multiple fixing lugs 13 arranged in a ring array on the outside of the mounting ring 12 are provided with second bolt holes 14 corresponding to the brake disc 11 and fixed by second bolts 15, forming a multi-point connection structure, which enhances the connection stability between the brake disc 11 and the mounting ring 12 and adapts to the force requirements of the braking system.

[0044] The assembly ring 12 includes an integrally formed assembly base ring 121 and a positioning collar 122. The positioning collar 122 is disposed at one end of the assembly base ring 121 near the brake disc 11, and the outer diameter of the positioning collar 122 is smaller than the outer diameter of the assembly base ring 121.

[0045] The brake disc 11 is sleeved on the outside of the positioning collar 122, and the length of the positioning collar 122 is the same as the thickness of the brake disc 11. The side of the mounting base ring 121 near the brake disc 11 fits against the side of the brake disc 11, and the fixing lug 13 is installed on the outer ring surface of the mounting base ring 121.

[0046] Using the above technical solution, the positioning collar 122 of the assembly ring 12 is adapted to the inner ring of the brake disc 11, which can guide the brake disc 11 to be quickly and accurately fitted, improving assembly efficiency. At the same time, it forms a radial limit on the brake disc 11 to avoid radial wobble. The assembly base ring 121 fits against the side of the brake disc 11, which can limit the axial displacement of the brake disc 11 in the direction of the main shaft 1 and prevent axial movement. In addition, the fixing lug 13 on the outer ring surface of the assembly base ring 121 can be connected to the brake disc 11 to complete the stable fixation of the brake disc 11 and ensure the reliability of the connection between the two.

[0047] The inner wall of the assembly ring 12 is provided with a plurality of anti-deviation blocks 16 arranged in a ring array, and a plurality of anti-deviation grooves 17 arranged in a ring array are opened on one end face of the main shaft 1, and the plurality of anti-deviation blocks 16 are slidably connected to the inner side of the plurality of anti-deviation grooves 17 in a one-to-one correspondence.

[0048] The outer ring wall at one end of the main shaft 1 is also provided with an external thread, and an internal thread ring 19 is fitted through the external thread, with the end face of the internal thread ring 19 pressing against the side of the brake disc 11.

[0049] By adopting the above technical solution, multiple anti-deviation blocks 16 arranged in a ring array are set on the inner sidewall of the assembly ring 12, and an anti-deviation groove 17 adapted to the anti-deviation blocks 16 is opened on the end face of one end of the main shaft 1. The anti-deviation blocks 16 are slidably connected to the inner side of the anti-deviation groove 17, which can effectively limit the deflection movement of the assembly ring 12 relative to the main shaft 1, ensure the coaxiality of the assembly ring 12 and the main shaft 1, and thus ensure the coaxial operation of the brake disc 11, avoiding problems such as brake disc 11 wobble and brake noise caused by the deflection of the assembly ring 12. At the same time, the external thread of the outer ring wall of one end of the main shaft 1 and the matching internal thread ring 19 can press against the brake disc 11 through the end face, limiting the axial displacement of the brake disc 11. Combined with the deflection limiting effect of the anti-deviation blocks 16 and the anti-deviation groove 17, the brake disc 11 is fixed in both the axial and circumferential directions, which comprehensively improves the installation stability of the brake disc 11 and ensures the long-term reliable operation of the braking system.

[0050] Working principle:

[0051] The new hub structure uses the main shaft 1 as the core support. The bearing ring 2 and the integrally formed connecting ring 4 fixed at both ends of the outer side provide the mounting base for the arc-shaped spoke disc 3. The arc-shaped spoke disc 3 is fitted with the connecting ring 4 through the inner arc-shaped groove 5 and fixed by the first bolt 8 through the first bolt hole 7. At the same time, the cut 9 cooperates with the positioning block 10 to prevent deflection. The spoke hole 6 of the arc-shaped spoke disc 3 is used to assemble the spoke connecting wheel set. The brake disc 11 at the end of the main shaft 1 is fitted with the inner ring fitting positioning sleeve 122. The assembly base ring 121 restricts its axial displacement. The fixing lug 13 is connected to the assembly ring 12 by the second bolt 15 through the second bolt hole 14. The anti-deflection block 16 cooperates with the anti-deflection groove 17 to prevent the assembly ring 12 from deflecting. The internal threaded ring 19 abuts against the brake disc 11 to strengthen the fixation. The whole achieves stable assembly of the wheel set and reliable braking operation.

[0052] 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 equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel hub structure, comprising a main shaft (1), characterized in that, Both ends of the main shaft (1) are fixedly fitted with bearing rings (2), and a connecting ring (4) is integrally formed on the outside of the bearing ring (2). The connecting ring (4) is coaxially arranged with the bearing ring (2). The outer side of the connecting ring (4) is fitted with a plurality of arc-shaped spoke discs (3) arranged in a ring array. The plurality of arc-shaped spoke discs (3) are spliced ​​together to form a complete ring structure. The side edge of the arc-shaped spoke discs (3) is provided with a plurality of spoke holes (6) arranged in a ring array. The inner side of the arc-shaped spoke discs (3) is provided with an arc-shaped groove (5) that is adapted to the outer wall of the connecting ring (4). The radius of curvature of the arc-shaped groove (5) is consistent with the outer radius of the connecting ring (4), and the arc-shaped spoke discs (3) are tightly fitted to the outer side of the connecting ring (4) through the arc-shaped groove (5). At least two first bolt holes (7) are provided at corresponding positions on the sides of the arc-shaped spoke disc (3) and the connecting ring (4). The at least two first bolt holes (7) are distributed at intervals along the length direction of the arc-shaped spoke disc (3), and the arc-shaped spoke disc (3) and the connecting ring (4) are detachably connected and fixed by first bolts (8) that are adapted to the first bolt holes (7).

2. The novel flower drum structure according to claim 1, characterized in that, The thickness of the arc-shaped spoke disc (3) is the same as the thickness of the bearing ring (2), the thickness of the connecting ring (4) is the same as the inner thickness of the arc-shaped groove (5), and the thickness of the connecting ring (4) is less than the thickness of the bearing ring (2). The inner ring surface of the arc-shaped spoke disc (3) abuts against the outer ring surface of the bearing ring (2).

3. The novel flower drum structure according to claim 1, characterized in that, There are three arc-shaped spoke discs (3), and the central angle of each of the three arc-shaped spoke discs (3) is 120°. The centers of the spoke holes (6) on the three arc-shaped spoke discs (3) are all located on the same circumference, and the central angles between adjacent spoke holes (6) are equal.

4. The novel flower drum structure according to claim 1, characterized in that, The outer side of the connecting ring (4) is provided with multiple breaks (9) arranged in a ring array. The number of breaks (9) is the same as the number of arc-shaped spoke discs (3), and the width of the breaks (9) is adapted to the thickness of the arc-shaped spoke discs (3). The arc-shaped groove (5) is provided with a positioning block (10) in the middle. The shape and size of the positioning block (10) match the fracture (9), and the positioning block (10) is inserted into the inside of the fracture (9).

5. The novel flower drum structure according to claim 1, characterized in that, A brake disc (11) is installed at the end of the main shaft (1). The brake disc (11) is coaxially arranged with the main shaft (1). An assembly ring (12) is installed on the side of the brake disc (11) near the main shaft (1). The assembly ring (12) is sleeved on the outside of the main shaft (1). A plurality of fixing lugs (13) are arranged in a ring array on the outside of the assembly ring (12). The fixing lugs (13) and the brake disc (11) are respectively provided with second bolt holes (14). The fixing lugs (13) and the brake disc (11) are fixed by passing through the corresponding second bolt holes (14) with second bolts (15).

6. The novel flower drum structure according to claim 5, characterized in that, The assembly ring (12) includes an integrally formed assembly base ring (121) and a positioning collar (122). The positioning collar (122) is located at one end of the assembly base ring (121) near the brake disc (11), and the outer diameter of the positioning collar (122) is smaller than the outer diameter of the assembly base ring (121). The brake disc (11) is sleeved on the outside of the positioning collar (122), and the length of the positioning collar (122) is consistent with the thickness of the brake disc (11). The side of the mounting base ring (121) close to the brake disc (11) fits against the side of the brake disc (11), and the fixing lug (13) is installed on the outer ring surface of the mounting base ring (121).

7. The novel flower drum structure according to claim 5, characterized in that, The inner wall of the assembly ring (12) is provided with a plurality of anti-deviation blocks (16) arranged in a ring array, and the end face of the main shaft (1) is provided with a plurality of anti-deviation grooves (17) arranged in a ring array, and the plurality of anti-deviation blocks (16) are slidably connected to the inner side of the plurality of anti-deviation grooves (17) in a one-to-one correspondence. The outer ring wall of one end of the main shaft (1) is also provided with an external thread, and an internal thread ring (19) is fitted through the external thread, with the end face of the internal thread ring (19) abutting against the side of the brake disc (11).

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