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Bicycle frame

A bicycle and frame technology, which is applied in the field of designing bicycle accessories, can solve problems such as cumbersome processing procedures and affect the smoothness and beauty of the bicycle frame, and achieve the effect of simple and light structure, stability and firmness

Inactive Publication Date: 2015-07-22
TIANJIN LIANHE IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the structure of the bicycle frame is roughly the same, including the head tube, stand tube, upper tube, down tube, upper fork, and lower fork. In order to ensure the stability of the frame, the upper tube and the lower tube are welded to the head by welding Between the pipe and the standpipe, one end of the upper fork and the lower fork are respectively welded to the upper and lower ends of the standpipe, and the other ends are welded together and converged at the rear two wheel axles. Due to the need for multiple welding, the processing procedure is cumbersome and affects the bicycle. The smoothness and beauty of the frame

Method used

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Effect test

Embodiment 1

[0016] Example 1 as figure 1 As shown, a bicycle frame includes a head tube 1, a down tube 2, and an upper tube 3, and is characterized in that: the down tube 2 is set as two straight tubes whose distance gradually increases from front to back, and the down tube The front end of the tube 2 is fixedly connected to the lower side of the head tube 1, and its end extends to the rear axle and is fixedly connected to the tab. There are upper tubes 3 parallel to each other, the front ends of the upper tubes 3 are fixed on the front ends of the lower tubes 2, longitudinal ribs 4 are arranged between the upper tubes 3 and the lower tubes 2, and the upper tubes 3 A transverse reinforcing rib 5 is arranged between the lower tube 2 and the lower tube 2 .

[0017] Wherein, a seat fixing seat 7 is provided on the upper tube 3, and the seat fixing seat 7 is arranged between the transverse reinforcing rib 5 and the longitudinal reinforcing rib 4 on the upper tube 3, and finally The distance...

Embodiment 2

[0021] Example 2 as figure 2 As shown, a bicycle frame includes a head tube 1, a down tube 2, and an upper tube 3, and is characterized in that: the down tube 2 is set as two straight tubes whose distance gradually increases from front to back, and the down tube The front end of the tube 2 is fixedly connected to the lower side of the head tube 1, and its end extends to the rear axle and is fixedly connected to the tab. There are upper tubes 3 parallel to each other, the front ends of the upper tubes 3 are fixed on the front ends of the lower tubes 2, longitudinal ribs 4 are arranged between the upper tubes 3 and the lower tubes 2, and the upper tubes 3 A transverse reinforcing rib 5 is arranged between the lower tube 2 and the lower tube 2 .

[0022] Wherein, the end of the upper tube 3 is fixedly connected to the top end of the longitudinal rib 4, and the seat fixing seat 7 is arranged between the transverse rib 5 on the upper tube 3 and the longitudinal rib 4 , the seat ...

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Abstract

The invention provides a bicycle frame. The bicycle frame comprises a head tube, lower tubes and upper tubes, wherein the lower tubes are two straight tubes, the distance between the two lower tubes becomes larger gradually from front to back, the front end of each lower tube is fixedly connected with the lower side of the head tube, and the tail end of each lower tube extends to a rear wheel axle and is fixedly connected with a connecting piece; a bottom bracket transversely penetrates through the middle portions of the lower tubes; the upper tubes parallel to each other are arranged above the lower tubes, the front end of each upper tube is fixed to the front end of the corresponding lower tube, longitudinal reinforcing ribs are arranged between the upper tubes and the lower tubes, and horizontal reinforcing ribs are arranged between the upper tubes and between the lower tubes; a saddle fixing base is arranged on the upper tubes, and the tail end of each upper tube extends to the tail end of a rear wheel. According to the bicycle frame, a saddle is fixed on the upper tubes, vertical tubes are omitted, the lower tubes and the upper tubes extend to be fixedly connected, and a horizontal fork and a vertical fork are omitted; furthermore, the extending parallel upper tubes can also serve as a supporting frame for a backseat, so that the structure becomes simpler and lighter and usability is higher.

Description

technical field [0001] The invention relates to the technical field of designing bicycle accessories, and in particular relates to a bicycle frame. Background technique [0002] At present, the structure of the bicycle frame is roughly the same, including the head tube, stand tube, upper tube, down tube, upper fork, and lower fork. In order to ensure the stability of the frame, the upper tube and the lower tube are welded to the head by welding Between the pipe and the standpipe, one end of the upper fork and the lower fork are respectively welded to the upper and lower ends of the standpipe, and the other ends are welded together and converged at the rear two wheel axles. Due to the need for multiple welding, the processing procedure is cumbersome and affects the bicycle. The fluidity and beauty of the frame. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the solution provided by the present invention is: a bicycle frame, inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K19/00
Inventor 刘中元
Owner TIANJIN LIANHE IND & TRADE