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CN-224225190-U - Bicycle seat tube

CN224225190UCN 224225190 UCN224225190 UCN 224225190UCN-224225190-U

Abstract

The utility model provides a bicycle seat tube, which comprises a connecting assembly and a seat tube assembly, wherein the top of the seat tube assembly is mounted to a bicycle through the connecting assembly, the seat tube assembly comprises an aluminum tube, the upper end of the aluminum tube is mounted to the connecting assembly through a corrugated tube, a connecting shaft is nested at the upper end of the interior of the aluminum tube, the upper end of the connecting shaft is mounted to the connecting assembly through the corrugated tube, the lower end of the connecting shaft is nested to a connecting shaft sliding sleeve, the lower end of the connecting shaft is connected to a spring piece, a heat shrinkage tube is mounted outside the spring piece, and the bottom of the spring piece is mounted to a positioning column piece. The bicycle seat tube has the beneficial effects that the technical problems that the traditional seat tube is easy to rotate and has high length are successfully solved through the innovative multi-key groove anti-rotation structure and the short-length arrangement of the spring. The bicycle seat tube can make the product have high performance and high reliability and has strong practicability.

Inventors

  • WEI SHICHANG

Assignees

  • 江苏喜富德金属制品有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (9)

  1. 1. The bicycle seat tube is characterized by comprising a connecting assembly and a seat tube assembly, wherein the top of the seat tube assembly is mounted to a bicycle through the connecting assembly, the seat tube assembly comprises an aluminum tube (2), the upper end of the aluminum tube (2) is mounted to the connecting assembly through a corrugated tube (6), a connecting shaft (7) is nested at the upper end inside the aluminum tube (2), the upper end of the connecting shaft (7) is mounted to the connecting assembly through the corrugated tube (6), the lower end of the connecting shaft (7) is nested to a connecting shaft sliding sleeve (12), the lower end of the connecting shaft (7) is connected to a spring piece (15), a heat shrinkage tube (18) is mounted outside the spring piece (15), and the bottom of the spring piece (15) is mounted to a positioning column piece (16).
  2. 2. A bicycle seat tube according to claim 1, wherein the connecting assembly comprises an aluminum head (1), the bottom of the aluminum head (1) is connected with a connecting shaft (7) and the upper end of a corrugated tube (6), the top of the aluminum head (1) is mounted on a lower clamping plate (3), an upper clamping plate (4) is mounted above the lower clamping plate (3), and a locking screw (11) penetrates through the aluminum head (1), the lower clamping plate (3) and the upper clamping plate (4) to be mounted on a clamping plate aluminum nut (5).
  3. 3. A bicycle seat tube according to claim 1, wherein the seat tube assembly further comprises an aluminum cap (8), a sliding sleeve body (9) and an oil seal ring (10), and the connecting part of the connecting shaft sliding sleeve (12) and the connecting shaft (7) is sequentially sleeved with the oil seal ring (10), the sliding sleeve body (9) and the aluminum cap (8) from bottom to top.
  4. 4. A bicycle seat tube according to claim 1, wherein the seat tube assembly further comprises a gasket (13) and a sliding sleeve locking screw (14), the lower end of the connecting shaft (7) penetrates through the gasket (13) to be connected to the sliding sleeve locking screw (14), and the gasket (13) and the sliding sleeve locking screw (14) are connected with the upper end of the spring piece (15) and used for limiting the upper end of the spring piece (15).
  5. 5. A bicycle seat tube according to claim 1, wherein the seat tube assembly further comprises a fine tuning aluminum nut (17) and a label (19), the positioning post (16) is bottom mounted to the fine tuning aluminum nut (17), and the label (19) is bottom mounted to the fine tuning aluminum nut (17).
  6. 6. A bicycle seat tube according to claim 1, wherein the seat tube assembly further comprises an O-ring (20), and the top of the aluminum tube (2) is mounted to the bellows (6) by the O-ring (20).
  7. 7. The bicycle seat tube of claim 1, wherein the upper and lower sides of the bottom end of the connecting shaft (7) are respectively provided with a limiting groove (71), and the limiting grooves (71) are matched with the connecting shaft sliding sleeve (12).
  8. 8. The bicycle seat tube of claim 6, wherein the bottom of the aluminum tube (2) is provided with internal threads, the top of the aluminum tube (2) is provided with external threads, the bottom of the aluminum tube (2) is connected with a fine-tuning aluminum nut (17) through the internal threads, the top of the aluminum tube (2) is connected with the corrugated tube (6) through the external threads, the upper side and the lower side of the inner wall of the aluminum tube (2) are respectively provided with a raised strip (21), and the raised strips (21) are matched with the connecting shaft sliding sleeve (12).
  9. 9. The bicycle seat tube of claim 8, wherein the upper and lower sides of the outer portion of the connecting shaft sliding sleeve (12) are respectively provided with a groove (121), the grooves (121) are matched with the raised strips (21), the upper and lower sides of the inner portion of the connecting shaft sliding sleeve (12) are respectively provided with a plane structure (122), and the plane structure (122) is matched with the limiting groove (71).

Description

Bicycle seat tube Technical Field The utility model belongs to the field of bicycle seat pipes, and particularly relates to a bicycle seat pipe. Background Bicycle seat tubes are important components for connecting the frame to the saddle, which not only support the rider's body weight, but also affect riding comfort and safety. The existing bicycle seat tube has the following defects: The effective rotation preventing structure is lacking between the outer tube and the inner tube, the measured data show that the relative rotation of 3-5 degrees is generated in each kilometer when riding, the space utilization rate is low, the length of the existing spring is generally over 80mm, the overall height of the seat tube is increased by 15-20%, the cost is high, and the like. Disclosure of utility model Accordingly, the present utility model is directed to a bicycle seat tube that overcomes at least one of the above-mentioned problems of the prior art. In order to achieve the above purpose, the technical scheme of the utility model is realized as follows: The utility model provides a bicycle seat tube, includes coupling assembling and seat tube subassembly, seat tube subassembly top is installed to the bicycle through coupling assembling, the seat tube subassembly includes the aluminum pipe, the aluminum pipe upper end is installed to coupling assembling through the bellows, the inside upper end nested connecting axle of aluminum pipe, and the connecting axle upper end passes the bellows and install to coupling assembling, and the connecting axle lower extreme is nested to the connecting axle sliding sleeve, and the connecting axle lower extreme is connected to the spring part, spring part externally mounted pyrocondensation pipe, and the spring part bottom is installed to the reference column spare. Further, the connecting assembly comprises an aluminum head, the bottom of the aluminum head is connected with the connecting shaft and the upper end of the corrugated pipe, the top of the aluminum head is mounted on the lower clamping plate, the upper clamping plate is mounted above the lower clamping plate, and the locking screw penetrates through the aluminum head, the lower clamping plate and the upper clamping plate and is mounted on the clamping plate aluminum nut. Further, the seat tube assembly further comprises an aluminum cap, a sliding sleeve body and an oil seal ring, and the connecting shaft sliding sleeve and the connecting shaft are sequentially sleeved with the oil seal ring, the sliding sleeve body and the aluminum cap from bottom to top. Further, seat pipe subassembly still includes gasket and sliding sleeve locking screw, the connecting axle lower extreme passes the gasket and is connected to the sliding sleeve locking screw, and gasket, sliding sleeve locking screw are all connected with spring piece upper end for spacing spring piece upper end. Further, the seat tube assembly further comprises a fine adjustment aluminum nut and a labeling, wherein the bottom of the positioning column part is mounted to the fine adjustment aluminum nut, and the labeling is mounted at the bottom of the fine adjustment aluminum nut. Further, the seat tube assembly further comprises an O-ring, and the top of the aluminum tube is mounted to the corrugated tube through the O-ring. Further, limiting grooves are respectively formed in the upper side and the lower side of the bottom end of the connecting shaft, and the limiting grooves are matched with the connecting shaft sliding sleeve in use. Further, the aluminum pipe bottom is equipped with the internal thread, and the top is equipped with the external screw thread, and the aluminum pipe bottom is connected with fine setting aluminum nut through the internal screw thread, and the aluminum pipe top is connected with the bellows through the external screw thread, and both sides are equipped with a sand grip respectively about the aluminum pipe inner wall, and the sand grip uses with the connecting axle sliding sleeve cooperation. Further, a groove is respectively formed in the upper side and the lower side of the outer portion of the connecting shaft sliding sleeve, the groove is matched with the convex strips, a plane structure is respectively arranged on the upper side and the lower side of the inner portion of the connecting shaft sliding sleeve, and the plane structure is matched with the limiting grooves. Compared with the prior art, the bicycle seat tube has the following advantages: According to the bicycle seat tube, the technical problems that a traditional seat tube is easy to rotate and has high length are successfully solved through the innovative multi-key groove anti-rotation structure and the short length reduction of the spring. The bicycle seat tube can make the product have high performance and high reliability and has strong practicability. Drawings The accompanying drawings, which are included to provide a further understanding of the utility model