Flower drum for lady light road bicycle

Abstract

The utility model discloses a lady light road bicycle hub which comprises a main shaft, horn-shaped spoke seats are symmetrically arranged at the two ends of the main shaft, spoke holes are evenly formed in the surfaces of the spoke seats in the annular direction of the spoke seats, and a plurality of end face guide grooves are evenly formed in the end faces of the spoke seats. A plurality of peripheral guide grooves are evenly formed in the edge of the outer surface of the spoke seat, the end face guide grooves and the peripheral guide grooves are arranged in a one-to-one correspondence mode, an integrated structure that the main shaft is directly connected with the horn-shaped spoke seat is adopted, the spoke holes are directly formed in the surface of the spoke seat, traditional redundant components are omitted, the weight is reduced, and the requirement for light weight is met; the horn-shaped design can be matched with the installation angle of the spoke, the structural stability is improved, meanwhile, the end face guide groove and the peripheral guide groove of the spoke base form effective guiding and avoiding for the spoke through the arc transition curved surface, frictional wear is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, and in particular to a hub for a women's lightweight road bicycle. Background Technology

[0002] The hub is a core component of a bicycle wheelset, connecting the spokes to the frame and playing a crucial role in transmitting power and supporting wheel rotation. In the design of hubs for women's lightweight road bikes, it is necessary to balance lightweight design with strength to meet portability requirements, while simultaneously addressing the friction and wear issues at the spoke-hub connection. However, some existing hubs suffer from unreasonable structural layouts, making it difficult to maintain structural stability while reducing weight; furthermore, the lack of effective guidance and avoidance structures at the spoke-hub contact points during installation leads to high assembly friction resistance, affecting efficiency, accelerating wear, and reducing lifespan.

[0003] Therefore, those skilled in the art have provided a hub for a lightweight road bike for women to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hub for a lightweight road bike for women.

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

[0006] A hub for a lightweight road bike for women includes a spindle with spoke seats symmetrically arranged at both ends. The spoke seats are flared outwards, and spoke holes are evenly distributed along their circumferential direction on the surface of the spoke seats. Multiple end-face guide grooves are evenly distributed in a circular array on the end face of the spoke seats. Multiple peripheral guide grooves are evenly distributed in a circular array on the edge of the outer surface of the spoke seats, and the end-face guide grooves and peripheral guide grooves are arranged in a one-to-one correspondence. The groove walls of both the end-face guide grooves and the peripheral guide grooves are curved surfaces with rounded transitions.

[0007] Preferably, the end face guide groove is formed in the annular area connecting the end face of the spoke seat and the inner sidewall, and the groove body is recessed inward along the axial direction of the spoke seat to form a matching curved surface. The outer peripheral guide groove is formed in the annular area connecting the outer sidewall of the spoke seat and the end face, and the groove body is recessed inward along the radial direction of the spoke seat to form a complementary curved surface. The end face guide groove and the outer peripheral guide groove correspond one-to-one and are coaxially arrayed along the annular direction of the spoke seat.

[0008] Preferably, the connection between the main shaft and the spoke seat is integrally formed with a transition connection portion.

[0009] Preferably, both the main shaft and the spoke seat are hollow structures, and their internal cavities are interconnected. The inner side of the spoke seat is provided with a bearing mounting position along the axial direction of the main shaft, and an annular groove is provided between the bearing mounting position and the end face opening of the spoke seat.

[0010] Preferably, the inner diameter of the spoke seat end face opening is larger than the inner diameter of the bearing mounting position, the inner diameter of the annular groove is larger than the inner diameter of the spoke seat end face opening, and the spoke holes are evenly distributed along the circumference of the annular groove.

[0011] Preferably, a retaining ring is provided on the inner side of the spoke seat near the main shaft, and is located at the end of the bearing mounting position near the main shaft, forming an axial limiting fit with the end face of the bearing mounting position.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The integrated structure, with the spindle directly connected to the flared spoke holder, eliminates redundant components and reduces weight to meet portability requirements. The flared design accommodates different spoke installation angles, enhancing structural stability. Simultaneously, the end face guide groove and outer circumferential guide groove of the spoke holder, through a rounded transition surface, effectively guide and avoid the spokes, reducing friction and wear and improving assembly efficiency. The integrated structure, combined with transition joints and other design features, simplifies the structure while ensuring strength and extending service life. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the flower drum structure proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the end face guide groove proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the flower drum proposed in this utility model.

[0018] In the diagram: 1. Main shaft; 2. Spoke seat; 3. Spoke hole; 4. End face guide groove; 5. Outer peripheral guide groove; 6. Transition connection; 7. Annular groove; 8. Bearing mounting position; 9. Bearing sealing groove. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-3 A hub for a lightweight road bike for women includes a main shaft 1. Spoke seats 2 are symmetrically arranged at both ends of the main shaft 1. The spoke seats 2 are in the shape of an outwardly expanding trumpet. Spoke holes 3 are evenly opened on the surface of the spoke seats 2 along its annular direction. Multiple end face guide grooves 4 are evenly opened on the end face of the spoke seats 2 in an annular array. Multiple peripheral guide grooves 5 are evenly opened on the edge of the outer surface of the spoke seats 2 in an annular array. The end face guide grooves 4 and peripheral guide grooves 5 are arranged one-to-one. The groove walls of the end face guide grooves 4 and peripheral guide grooves 5 are both arc transition surfaces.

[0021] By adopting the above technical solutions, the trumpet-shaped spoke seat 2 adapts to the spoke installation angle, improving the overall structural stability; the evenly distributed spoke holes 3 ensure the spokes are subjected to balanced forces; the one-to-one correspondence between the end face guide groove 4 and the outer peripheral guide groove 5, as well as the arc transition curved surface groove wall, can reduce the frictional resistance and wear during spoke installation, achieving smooth installation and positioning of the spokes, while the symmetrical structure ensures that the force is evenly distributed on both sides of the hub.

[0022] The end face guide groove 4 is opened in the annular area connecting the end face and the inner side wall of the spoke seat 2. The groove body is recessed inward along the axial direction of the spoke seat 2 to form a matching curved surface. The outer peripheral guide groove 5 is opened in the annular area connecting the outer side wall and the end face of the spoke seat 2. The groove body is recessed inward along the radial direction of the spoke seat 2 to form a complementary curved surface. The end face guide groove 4 and the outer peripheral guide groove 5 correspond one-to-one and are coaxially arrayed along the annular direction of the spoke seat.

[0023] Using the above technical solutions, in the design of the end face guide groove 4 and the outer peripheral guide groove 5, the grooves connecting the annular area form an adaptive space, which can effectively avoid the spokes and prevent direct friction between the spokes and the spoke seat 2; the axial and radial concave structure, the adaptive and complementary curved surface shape not only improve the guiding accuracy, but also optimize the avoidance space; the one-to-one correspondence in the annular direction and the coaxial array distribution ensure the consistency of multi-spoke avoidance and guidance, reduce wear, and improve assembly efficiency and safety.

[0024] The connection between the main shaft 1 and the spoke seat 2 is integrally formed with a transition connection part 6.

[0025] By adopting the above technical solutions, the design of the transition connection part 6 can disperse the stress at the connection between the main shaft 1 and the spoke seat 2, reduce stress concentration, improve the structural strength and stability of the connection between the main shaft 1 and the spoke seat 2, and ensure that the hub is not easily deformed or broken when subjected to spoke tension and riding impact.

[0026] Both the main shaft 1 and the spoke seat 2 are hollow structures, and their internal cavities are interconnected. The inner side of the spoke seat 2 is provided with a bearing mounting position 8 along the axial direction of the main shaft 1, and an annular groove 7 is provided between the bearing mounting position 8 and the end face opening of the spoke seat 2.

[0027] By adopting the above technical solutions, the overall structural design of the main shaft 1 and the spoke seat 2 achieves lightweighting. The bearing mounting position 8 provides precise axial positioning for the bearing, ensuring the coaxiality of the bearing and the main shaft. The annular groove 7 provides reasonable space for the spoke hole 3, avoiding structural interference with the bearing mounting position 8, while enhancing the structural rigidity of the end face of the spoke seat 2 and adapting to the collaborative work requirements of various components.

[0028] The inner diameter of the opening on the end face of the spoke seat 2 is greater than the inner diameter of the bearing mounting position 8, the inner diameter of the annular groove 7 is greater than the inner diameter of the opening on the end face of the spoke seat 2, and the spoke holes 3 are evenly distributed along the circumference of the annular groove 7.

[0029] By adopting the above technical solution, the hierarchical distribution of the end face opening, bearing mounting position 8 and annular groove 7 not only ensures the compactness of bearing installation, but also provides sufficient space for the opening of spoke holes 3, making the layout of each component more reasonable.

[0030] A retaining ring 9 is provided on the inner side of the spoke seat 2 near the main shaft 1, and is located at the end of the bearing mounting position 8 near the main shaft 1, forming an axial limiting fit with the end face of the bearing mounting position 8.

[0031] By adopting the above technical solution, the retaining ring 9 and the end face of the bearing mounting position 8 form an axial limiting fit, which can axially position the bearing installed in the bearing mounting position 8.

[0032] Working principle:

[0033] When the hub is working, the main shaft 1 serves as the core support component. Its two ends have symmetrical flared spoke seats 2 that connect to the spokes through spoke holes 3. The flared design adapts to the spoke installation angle to ensure force balance. The hub adopts an integrated structure in which the main shaft 1 is directly connected to the flared spoke seats 2. The spoke holes 3 are directly opened on the surface of the spoke seats 2, eliminating the traditional redundant structure and significantly reducing the overall weight to meet the needs of portability. During the spoke installation process, the arc transition surface of the end face guide groove 4 and the outer peripheral guide groove 5 of the spoke seat 2 guides and avoids the spokes, reducing friction. The bearing mounting position 8 on the inner side of the spoke seat 2, together with the retaining ring 9, achieves precise bearing positioning and axial limit. The whole system works together to achieve power transmission and stable wheel rotation.

[0034] 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 hub for a women's lightweight road bike, comprising a spindle (1), characterized in that, The main shaft (1) is symmetrically provided with spoke seats (2) at both ends. The spoke seats (2) are in the shape of an outwardly expanding trumpet. The surface of the spoke seats (2) is uniformly provided with spoke holes (3) along its annular direction. The end face of the spoke seats (2) is uniformly provided with multiple end face guide grooves (4) distributed in an annular array. The edge of the outer surface of the spoke seats (2) is uniformly provided with multiple outer peripheral guide grooves (5) distributed in an annular array. The end face guide grooves (4) and the outer peripheral guide grooves (5) are provided in a one-to-one correspondence. The groove walls of the end face guide grooves (4) and the outer peripheral guide grooves (5) are both arc transition surfaces.

2. The hub for a women's lightweight road bike according to claim 1, characterized in that, The end face guide groove (4) is opened in the annular area connecting the end face of the spoke seat (2) and the inner sidewall. The groove body is recessed inward along the axial direction of the spoke seat (2) to form a matching curved surface. The outer peripheral guide groove (5) is opened in the annular area connecting the outer sidewall of the spoke seat (2) and the end face. The groove body is recessed inward along the radial direction of the spoke seat (2) to form a complementary curved surface. The end face guide groove (4) and the outer peripheral guide groove (5) correspond one-to-one and are coaxially arrayed along the annular direction of the spoke seat.

3. The hub for a women's lightweight road bike according to claim 1, characterized in that, The connection between the main shaft (1) and the spoke seat (2) is integrally formed with a transition connection part (6).

4. The hub for a women's lightweight road bike according to claim 1, characterized in that, Both the main shaft (1) and the spoke seat (2) are hollow structures, and their internal cavities are interconnected. The inner side of the spoke seat (2) is provided with a bearing mounting position (8) along the axial direction of the main shaft (1), and an annular groove (7) is provided between the bearing mounting position (8) and the end face opening of the spoke seat (2).

5. A hub for a women's lightweight road bike according to claim 4, characterized in that, The inner diameter of the opening on the end face of the spoke seat (2) is greater than the inner diameter of the bearing mounting position (8), the inner diameter of the annular groove (7) is greater than the inner diameter of the opening on the end face of the spoke seat (2), and the spoke holes (3) are evenly distributed along the circumference of the annular groove (7).

6. A hub for a women's lightweight road bike according to claim 1, characterized in that, A retaining ring (9) is provided on the inner side of the spoke seat (2) near the main shaft (1), and is located at one end of the bearing mounting position (8) near the main shaft (1), forming an axial limiting fit with the end face of the bearing mounting position (8).

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