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Bicycle having multiple tube frame structure.

A technology of bicycle frame and tube structure, which is applied in the direction of bicycle frame, bicycle accessories, bicycle saddle, etc., and can solve the problems of thin-wall longitudinal bending and other problems

Inactive Publication Date: 2007-06-13
PRINCE SPORTS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] Both of the aforementioned composite handlebar designs are also prone to thin-wall longitudinal buckle failures because they are designed with composite monotubes

Method used

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  • Bicycle having multiple tube frame structure.
  • Bicycle having multiple tube frame structure.
  • Bicycle having multiple tube frame structure.

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Embodiment Construction

[0058] The same reference numerals refer to the same parts throughout the drawings.

[0059] FIG. 1 shows a bicycle, generally designated by the reference numeral 10 . The bicycle 10 includes a frame 12 comprised of a top tube 14 , a down tube 16 , a seat tube 18 , a rear fork 20 and a chain stay 22 .

[0060] The bicycle frame also includes a front fork 24 , a handlebar 26 and a seat post 28 .

[0061] Figure 1 shows a preferred embodiment in which each tubular member has a number of openings or "orifices" 30 at 90 degrees to the direction of travel, with the exception of the handlebar 26, which has the orifices oriented to the direction of travel Consistent, but not visible in Figure 1. However, another handlebar design, such as drop bars used on road bikes, benefits from such oriented apertures.

[0062] As described below, each tubular member is formed from two or more tubes which are integrally cast so as to form a common tube wall (or in the case of more than two tube...

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PUM

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Abstract

A structure for a bicycle frame system is described by using multiple composite tubes bonded to one another, wherein apertures, or ''ports'' are molded between the tubes to improve the stiffness, strength, aerodynamics and comfort of bicycle frame component.

Description

technical field [0001] The present invention relates to composite structures for bicycles, more particularly where the structure is generally tubular and the conventional single tube is replaced by a plurality of connected tubes, preferably a pair of tubes fused together along their linings, Thereby providing a reinforced inner wall and apertures or "ports" between the two tubes providing particular performance advantages. [0002] The present invention relates to an improved structure of a bicycle frame, including an upper tube, a lower tube, a seat stay, a chain stay, and a front wheel bracket (fork), a handlebar, and a seat post. In particular, the design principle is to replace the single-tube section with a double-tube design, but keep the external geometry the same or similar to the original single-tube design. This provides an inner wall structure between the two tubes which has the advantage of strength and rigidity. In addition, the two tubes may be separated at var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K19/02B62K21/02B62J1/08B62K21/12
CPCB62K19/16
Inventor 斯蒂芬·J·戴维斯罗伯托·加扎拉
Owner PRINCE SPORTS LLC
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