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CN-121989582-A - Bicycle rim with spoke hole base ring and manufacturing method thereof

CN121989582ACN 121989582 ACN121989582 ACN 121989582ACN-121989582-A

Abstract

The invention discloses a bicycle rim with a spoke hole base ring and a manufacturing method thereof, the bicycle rim comprises a rim body, the spoke hole base ring, spoke nuts and spokes, annular closed cavities are formed in the rim body, the spoke hole base ring is arranged on the bottom wall of the rim body corresponding to the radial inner side of the closed cavities, the spoke hole base ring comprises an annular belt and a plurality of spokes Kong Ji arranged on the annular belt, spoke holes are formed in a spoke hole base, the tooth cap ends of the spokes penetrate through the spoke holes and are coaxially assembled with the spoke nuts, the bottom side surfaces of the spoke nuts are tightly abutted against and attached to the surfaces of the spoke hole base, so that the installation direction of the spoke nuts is the same as that of the spokes, and the situation that the spokes are deviated from one side to form a folding angle by contact extrusion with the spoke nuts can be avoided.

Inventors

  • LIU WURUI
  • XIAO PEILONG

Assignees

  • 厦门碳帝复合材料科技有限公司

Dates

Publication Date
20260508
Application Date
20251208
Priority Date
20241210

Claims (12)

  1. 1. A bicycle rim with a spoke hole base ring is characterized by comprising a rim body, a spoke hole base ring, spoke nuts and spokes, wherein an annular closed cavity is formed in the rim body, the spoke hole base ring is arranged on the bottom wall of the rim body corresponding to the radial inner side of the closed cavity, the spoke hole base ring comprises an annular belt and a plurality of spokes Kong Ji arranged on the annular belt, spoke holes are formed in the spoke hole base, tooth cap ends of the spokes penetrate through the spoke holes and are coaxially assembled with the spoke nuts, and the bottom side faces of the spoke nuts are tightly abutted against and attached to the surface of the spoke hole base.
  2. 2. The bicycle rim with the spoke hole base ring of claim 1, wherein the spoke hole base is disposed on the outer ring sidewall of the annular band, the surface of the spoke hole base is a concave spherical surface, and the axis of the spoke, the axis of the spoke hole and the normal line of the concave spherical surface of the spoke hole base at the center of the spoke hole are collinear.
  3. 3. The bicycle rim with the spoke hole base ring according to claim 2, wherein the radius of the concave spherical surface of the spoke hole base is 80-120 mm.
  4. 4. The bicycle rim with the spoke hole base ring of claim 2, wherein the bottom side surface of the spoke nut is a convex spherical surface, the convex spherical surface of the spoke nut and the concave spherical surface of the spoke hole base have the same radius, and the bottom side surface of the spoke nut and the surface of the spoke hole base are in spherical surface contact so as to be closely abutted.
  5. 5. The bicycle rim with the spoke hole base ring of claim 1, wherein the spoke hole base is disposed on the outer ring side wall of the annular band, the surface of the spoke hole base is an inclined plane, and the axis of the spoke hole are perpendicular to the inclined plane of the spoke hole base.
  6. 6. The bicycle rim with the spoke hole base ring as set forth in claim 5, wherein the bottom side of the spoke nipple is a flat surface and there is a flat contact between the bottom side of the spoke nipple and the surface of the spoke hole base for a tight abutment.
  7. 7. The bicycle rim with the spoke hole base ring of claim 1, wherein the spoke hole base ring includes a plurality of spoke hole base sections that are spliced end-to-end.
  8. 8. The bicycle rim with the spoke hole base ring of claim 7, wherein the number of spoke hole base sections is six, four spokes Kong Ji are 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.
  9. 9. The bicycle rim with the spoke hole base ring of claim 7, wherein the two ends of the spoke hole base sections are respectively provided with an upper connecting sheet and a lower connecting sheet in an extending mode, and the two adjacent spoke hole base sections are spliced with the lower connecting sheet in an up-down attaching mode through the upper connecting sheet.
  10. 10. The bicycle rim with the spoke hole base ring according to claim 1, wherein the spoke hole base has a circular, elliptical, square, trapezoidal or triangular transverse cross-sectional shape, and/or the rim body extends radially outwardly of the corresponding closed cavity to provide a tire hole slot for receiving a tire.
  11. 11. The bicycle rim with the spoke hole base ring of claim 1, wherein the surface of the spoke hole base ring is wrapped with a prepreg fiber cloth.
  12. 12. A method for manufacturing a bicycle rim with a spoke hole base ring as defined in claim 11, comprising the steps of: S1, manufacturing a spoke hole base ring with a spoke hole base through a special die and a carbon fiber material; S2, embedding a spoke hole base ring into the bottom wall of the rim body by using a carbon fiber material in the preforming process to form a complete rim, putting a preformed semi-finished product into a rim forming die, then putting into forming equipment, closing a die, filling high-pressure gas into a formed air bag, and heating to 150-160 ℃ for forming and curing for not less than 30 minutes; s3, taking out the molded rim from the mold, trimming, taking out the molded air bag, and checking the flatness and the roundness of the rim; S4, machining spoke holes, namely enabling spoke holes perpendicular to the surface of the spoke hole base to be formed in the spoke hole base; S5, coaxially assembling the tooth cap ends of the spokes with the spoke nuts through the spoke holes, and installing the cap ends of the spokes on the hub so that the installation direction of the spoke nuts is the same as the installation direction of the spokes.

Description

Bicycle rim with spoke hole base ring and manufacturing method thereof Technical Field The invention relates to the technical field of bicycle rims, in particular to a bicycle rim with a spoke hole base ring and a manufacturing method thereof. Background Referring to fig. 1-3, a spoke hole is formed in the inner circumferential wall of a rim body of a conventional bicycle rim, a tooth cap end of a spoke penetrates through the spoke hole to be matched with a spoke nut, the installation direction of the spoke nut is consistent with the radial direction of the rim body, but the installation direction of the spoke is different from the radial direction of the rim body by a plurality of angles, so that the spoke nut and the corresponding spoke cannot be positioned on the same axis, one side of the spoke offset is in contact with the spoke nut to be extruded to form a folded angle (as shown by arrows in fig. 2 and 3), the spoke is easy to break after long-time use, the other side is not in contact with the spoke nut to be loose, and the spoke tension is reduced, so that frequent adjustment is needed, more trouble is caused, one spoke is loosened, the stress of other spokes is increased, the chain reaction causes the spoke to be loose and damaged, high risk hidden danger exists, the safe riding of a user is affected, and in addition, in order to meet the condition that the spoke is not damaged under high tension, the rim body must be designed to be thicker at the position of the spoke hole, so that the thickness of the inner wall of the rim body is large, and the thickness of the rim body is not light enough. Disclosure of Invention The present invention is directed to a bicycle rim with a spoke hole base ring that solves the above-mentioned problems. In order to achieve the above purpose, the technical scheme of the invention is that the bicycle rim with the spoke hole base ring comprises a rim body, the spoke hole base ring, spoke nuts and spokes, wherein annular closed cavities are formed in the rim body, the spoke hole base ring is arranged on the bottom wall of the rim body corresponding to the radial inner side of the closed cavities, the spoke hole base ring comprises an annular belt and a plurality of spokes Kong Ji arranged on the annular belt, the spoke hole base is provided with spoke holes, the tooth cap ends of the spokes penetrate through the spoke holes to be coaxially assembled with the spoke nuts, and the bottom side surfaces of the spoke nuts are tightly abutted against and attached to the surface of the spoke hole base. Preferably, the spoke hole base is arranged on the outer ring side wall of the annular belt, the surface of the spoke hole base is a concave spherical surface, and the axis of the spoke hole are collinear with the normal line of the concave spherical surface of the spoke hole base at the center of the spoke hole. Preferably, the radius range of the concave spherical surface of the spoke hole base is 80-120 mm. Preferably, the bottom side of the spoke nut is a convex spherical surface, the radius of the convex spherical surface of the spoke nut is the same as that of the concave spherical surface of the spoke hole base, and spherical surface contact is formed between the bottom side of the spoke nut and the surface of the spoke hole base so as to be tightly abutted and attached. Preferably, the spoke hole base is arranged on the outer ring side wall of the annular belt, the surface of the spoke hole base is an inclined plane, and the axis of the spoke hole are respectively perpendicular to the inclined plane of the spoke hole base. Preferably, the bottom side of the spoke nipples is a flat surface, and the bottom side of the spoke nipples is in planar contact with the surface of the spoke hole base so as to be tightly abutted against the surface. Preferably, the spoke hole base ring comprises a plurality of spoke hole base sections spliced end to end in sequence. Preferably, the number of the spoke hole base sections is six, four spokes Kong Ji are arranged 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. Preferably, the two ends of the spoke hole base sections are respectively provided with an upper connecting sheet and a lower connecting sheet in an extending mode, and the two adjacent spoke hole base sections are spliced through the upper connecting sheet and the lower connecting sheet in an up-down laminating mode. Preferably, the spoke hole base has a circular, elliptical, square, trapezoidal or triangular transverse cross section, and/or the rim body extends radially outwards of the corresponding closed chamber to form a positioning hole groove for accommodating a tire. Preferably, the surface of the spoke hole base ring is wrapped with prepreg fiber cloth. The invention also provides a manufacturing method for manufacturing the bicycle rim with the spoke hole base ring, which comprises