Bicycle rim with spoke hole base ring

Abstract

The bicycle rim with the spoke hole base ring comprises a rim body, the spoke hole base ring, spoke nuts and spokes, an annular closed cavity is formed in the rim body, and the spoke hole base ring is arranged on the bottom wall, corresponding to the radial inner side of the closed cavity, of the rim body. The spoke hole base ring comprises a ring belt and a plurality of spoke hole bases arranged on the ring belt, spoke holes are formed in the spoke hole bases, the tooth cap ends of the spokes penetrate through the spoke holes to be coaxially assembled with the spoke nuts, the surfaces of the spoke hole bases are perpendicular to the axis direction of the spokes, and the spoke holes are formed in the spoke hole bases. The installation direction of the spoke nut is the same as the installation direction of the spoke, one side of the spoke can be prevented from deviating and making contact with the spoke nut to form a break angle so as to be broken, meanwhile, the other side of the spoke is prevented from being not in contact with the spoke nut to be loosened, the tension of the spoke is prevented from being reduced, and the spoke is more worry-saving and durable. And meanwhile, the riding safety of a user is improved, and the requirement for light weight of the rim is met.

Description

Technical Field

[0001] This utility model relates to the field of bicycle wheel rim technology, specifically to a bicycle wheel rim with a spoke hole base ring. Background Technology

[0002] Currently, bicycle rims have spoke holes on their inner circumference. The spoke tips pass through these holes and are fitted with spoke nuts. The spoke nuts are installed in the same direction as the rim's radial direction, but the spokes can be installed at multiple angles, each different from the rim's radial direction. This causes the spoke nuts and their corresponding spokes to be misaligned, resulting in the spokes being pressed against the spoke nuts on one side, creating an angle (e.g., ...). Figure 1 As shown at point A in the middle, the spokes are prone to breakage after prolonged use. If the other side is not in contact, they are prone to loosening, which reduces the tension of the spokes and requires frequent adjustments, which is quite troublesome. Moreover, if one spoke becomes loose, the stress on the other spokes will increase, leading to a chain reaction that causes multiple spokes to become loose and damaged, posing a high risk and affecting the user's safe riding. In addition, in order to ensure that the spokes are not damaged under high tension, the rim body must be designed with a thicker wall at the spoke hole, resulting in a larger inner wall thickness of the rim body, which is not lightweight enough. Utility Model Content

[0003] The present invention aims to provide a bicycle wheel rim with a spoke hole base ring to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a bicycle rim with a spoke hole base ring, comprising a rim body, a spoke hole base ring, spoke nuts, and spokes. The rim body has an annular closed chamber. The spoke hole base ring is disposed on the bottom wall of the rim body corresponding to the radial inner side of the closed chamber. The spoke hole base ring includes an annular band and a plurality of spoke hole bases disposed on the annular band. Spoke holes are formed on the spoke hole bases. The toothed end of the spoke passes through the spoke hole and is coaxially assembled with the spoke nut. The surface of the spoke hole base is perpendicular to the axis of the spoke.

[0005] Preferably, the spoke hole base is disposed on the outer sidewall of the ring belt, and the spoke nut includes a cap and a bushing that are perpendicular to each other. The bottom surface of the cap is flush with and fits the surface of the spoke hole base. The toothed end of the spoke passes through the spoke hole and is coaxially assembled with the bushing of the spoke nut.

[0006] Preferably, the spoke hole base ring comprises multiple spoke hole base segments spliced ​​together end to end.

[0007] Preferably, there are six spoke hole base sections, with four spoke hole bases provided on each spoke hole base section, and the inclination angles of the spoke holes on the four spoke hole bases are different from each other.

[0008] Preferably, an upper connecting piece and a lower connecting piece are respectively provided at both ends of the spoke hole base section, and two adjacent spoke hole base sections are spliced ​​together by the upper connecting piece and the lower connecting piece.

[0009] Preferably, the transverse cross-sectional shape of the spoke hole base is circular, elliptical, square, trapezoidal, or triangular.

[0010] Preferably, the wheel rim body has a tire position slot extending radially outward from the closed chamber.

[0011] Preferably, the surface of the spoke hole base ring is covered with prepreg fiber cloth.

[0012] This utility model has the following beneficial effects:

[0013] This utility model includes a wheel rim body, a spoke hole base ring, a spoke nut, and spokes. The wheel rim body has an annular closed chamber. The spoke hole base ring is disposed on the bottom wall of the wheel rim body corresponding to the radial inner side of the closed chamber. The spoke hole base ring includes a ring belt and multiple spoke hole bases disposed on the ring belt. Spoke holes are formed on the spoke hole bases. The toothed end of the spoke passes through the spoke hole and is coaxially assembled with the spoke nut. The toothed end of the spoke is mounted on the hub. The surface of the spoke hole base is perpendicular to the axis of the spoke, such that the installation direction of the spoke nut is perpendicular to the spoke axis. With all spokes installed in the same direction, this technical solution ensures that the spoke nut and its corresponding spoke are on the same axis. This prevents one side of the spoke from shifting and coming into contact with the spoke nut, causing pressure and potentially breaking. It also prevents the other side of the spoke from not contacting the spoke nut, which could lead to loosening and reduced spoke tension. This eliminates unnecessary adjustments, making the wheel more convenient and durable. Furthermore, it prevents a loose spoke from causing increased stress on other spokes, thus preventing a chain reaction that could lead to multiple spokes becoming loose and damaged, eliminating potential risks and improving riding safety. Additionally, by adding a spoke hole base ring, the rim's load-bearing capacity is increased, and the inner bottom wall of the rim can be made thinner, reducing the overall weight of the rim and meeting the requirements for lightweight rims. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the state in which the spokes and spoke nuts of a bicycle rim are pressed together and form an angle.

[0015] Figure 2 This is a schematic diagram showing the coaxial state of the spokes and spoke nuts in an embodiment of this utility model;

[0016] Figure 3 This is a perspective view of an embodiment of the present utility model.

[0017] Figure 4 This is a front view of an embodiment of the present utility model;

[0018] Figure 5 This is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 6 This is a longitudinal sectional view and a partially enlarged schematic diagram of an embodiment of the present utility model;

[0020] Figure 7 This is an overall schematic diagram of the spoke hole base ring according to an embodiment of the present invention;

[0021] Figure 8 This is a top view of the spoke hole base section of this utility model embodiment;

[0022] Figure 9 This is a bottom view of the spoke hole base section of this utility model embodiment;

[0023] Figure 10 This is a front view of the spoke hole base section according to an embodiment of the present utility model;

[0024] Figure 11 This is a half-sectional view of the spoke hole base section of an embodiment of this utility model.

[0025] The attached diagram is labeled as follows: 1. Wheel body, 11. Enclosed chamber, 12. Bottom wall, 13. Tire position hole groove, 2. Spoke hole base ring, 21. Ring belt, 22. Spoke hole base, 23. Upper connecting piece, 24. Lower connecting piece, 3. Spoke nut, 4. Spoke, 5. Hub. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] See Figure 2-11As shown in the figure, as an embodiment of the present invention, a bicycle rim with a spoke hole base ring is provided, including a rim body 1, a spoke hole base ring 2, spoke nuts, and spokes 4. The rim body 1 is a carbon fiber structure with an annular closed chamber 11 inside. The spoke hole base ring 2 is disposed on the bottom wall 12 of the rim body 1 on the radially inner side of the closed chamber 11. The spoke hole base ring 2 includes a ring belt 21 and a plurality of spoke hole bases 22 disposed on the ring belt 21. Spoke holes are provided on the spoke hole bases 22. The toothed end of the spoke 4 passes through the spoke hole and is coaxially assembled with the spoke nut 3. The nut end of the spoke is mounted on the hub 5. The surface of the spoke hole base 22 is perpendicular to the axial direction of the spoke 4. The spoke nut 3 is installed in the same direction as the spoke 4, meaning the spoke nut 3 and spoke 4 are coaxially positioned. This technical solution ensures that the spoke nut 3 and its corresponding spoke 4 are on the same axis, preventing one side of the spoke 4 from shifting and coming into contact with the spoke nut 3, forming an angle and potentially breaking. It also prevents the other side of the spoke 4 from not contacting the spoke nut 3, causing loosening and a decrease in spoke tension. This avoids unnecessary adjustments, making the wheel more convenient and durable. Furthermore, it prevents one spoke 4 from becoming loose, increasing the stress on other spokes and causing a chain reaction that could lead to multiple spokes becoming loose or damaged, eliminating potential risks and improving user riding safety. Additionally, by adding the spoke hole base ring 2, the rim's load-bearing capacity is increased, and the inner bottom wall 12 of the rim can be made thinner, reducing the overall weight of the rim and meeting the requirements for lightweight rims.

[0028] In this embodiment, the spoke hole base 22 is disposed on the outer sidewall of the ring belt 21. The spoke nut 3 includes a cap and a bushing that are perpendicular to each other. The bottom surface of the cap is flush with and fits the surface of the spoke hole base 22. The toothed end of the spoke 4 passes through the spoke hole and is coaxially assembled with the bushing of the spoke nut 3, ensuring the installation stability of the spoke nut 3 at the spoke hole. Furthermore, by setting the surface of the spoke hole base 22 to be perpendicular to the axial direction of the spoke 4, it adapts to the existing structure of the spoke nut 3, eliminating the need to modify the spoke nut 3 and saving development costs.

[0029] In this embodiment, the spoke hole base ring 2 includes six spoke hole base segments spliced ​​end to end. Each spoke hole base segment is provided with four spoke hole bases 22, and the inclination angles of the spoke holes on the four spoke hole bases 22 are different from each other. The above arrangement can save the development and manufacturing cost of the corresponding mold. Of course, the number of spoke hole base segments, spoke hole bases 22, or spoke holes can be adapted according to the actual number of spokes. For example, the spoke hole base ring can be four spoke hole base segments spliced ​​end to end, which is not limited here.

[0030] In this embodiment, an upper connecting piece 23 and a lower connecting piece 24 are respectively provided at both ends of the spoke hole base section. Two adjacent spoke hole base sections are spliced ​​together by the upper connecting piece 23 and the lower connecting piece 24, thereby ensuring that the thickness of the ring belt 21 at the splice is basically the same as the thickness at other positions, and the connection stability is better.

[0031] In this embodiment, the transverse cross-sectional shape of the spoke hole base 22 is circular, elliptical, square, trapezoidal or triangular.

[0032] In this embodiment, the wheel rim body 1 is provided with a tire position slot 13 for accommodating the tire, extending radially outward from the closed cavity 11.

[0033] In this embodiment, the surface of the spoke hole base ring is wrapped with prepreg fiber cloth, which further improves the curing stability of the spoke hole base ring in the wheel rim body 1.

[0034] This utility model also provides a method for manufacturing a bicycle wheel rim with a spoke hole base ring 2 as described in the above embodiments, comprising the following steps:

[0035] S1. A spoke hole base ring 2 with a spoke hole base 22 is made using a special mold and carbon fiber material;

[0036] S2. During the pre-forming process, the spoke hole base ring 2 is embedded in the bottom wall of the wheel rim body with carbon fiber material to form a complete wheel rim. The pre-formed semi-finished product is placed in the wheel rim forming mold, then placed in the forming equipment, the mold is closed, high-pressure gas is filled into the forming air bag, and the pressure is increased and heated to 150-160° to form and cure for no less than 30 minutes.

[0037] S3. Remove the formed wheel rim from the mold; trim the edges, remove the formed air bag, and check the flatness and roundness of the wheel rim;

[0038] S4. Machining spoke holes: Make spoke holes perpendicular to each other on the spoke hole base 22;

[0039] S5. Pass the toothed end of the spoke 4 through the spoke hole and assemble it coaxially with the spoke nut 3. Install the head end of the spoke 4 on the hub 5 so that the installation direction of the spoke nut 3 is the same as the installation direction of the spoke 4.

[0040] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A bicycle rim having a spoke hole base ring, characterized by: The wheel includes a rim body, a spoke hole base ring, spoke nuts, and spokes. The rim body has an annular closed chamber. The spoke hole base ring is located on the bottom wall of the rim body corresponding to the radial inner side of the closed chamber. The spoke hole base ring includes an annular belt and multiple spoke hole bases located on the annular belt. The spoke hole bases have spoke holes. The toothed end of the spoke passes through the spoke hole and is coaxially assembled with the spoke nut. The surface of the spoke hole base is perpendicular to the axis of the spoke.

2. Bicycle rim according to claim 1, characterized in that: The spoke hole base is set on the outer side wall of the ring belt. The spoke nut includes a cap head and a bushing that are perpendicular to each other. The bottom surface of the cap head is flush with the surface of the spoke hole base. The toothed end of the spoke passes through the spoke hole and is coaxially assembled with the bushing of the spoke nut.

3. The bicycle rim with spoke hole base ring according to claim 1, characterized in that: The spoke hole base ring consists of multiple spoke hole base segments that are spliced ​​together end to end.

4. Bicycle rim according to claim 3, characterized in that: There are six spoke hole base sections, and each spoke hole base section has four spoke hole bases, and the inclination angles of the spoke holes on the four spoke hole bases are different from each other.

5. The bicycle rim with spoke hole base ring according to claim 3, characterized in that: The spoke hole base section has an upper connecting piece and a lower connecting piece extending from both ends. Two adjacent spoke hole base sections are joined together by the upper connecting piece and the lower connecting piece.

6. The bicycle rim of claim 1, wherein: The transverse cross-sectional shape of the spoke hole base can be circular, elliptical, square, trapezoidal, or triangular.

7. The bicycle rim with spoke hole base ring according to claim 1, characterized in that: The wheel rim body has a tire position slot extending radially outward from the closed chamber to accommodate the tire.

8. The bicycle rim with spoke hole base ring according to claim 1, characterized in that: The surface of the spoke hole base ring is covered with prepreg fiber cloth.

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