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Sleeve type bicycle frame

A bicycle and sleeve-type technology, which is applied in the field of vehicle components, can solve the problems of restricting folding bicycles, reducing strength, and affecting the strength of welded parts of the frame.

Inactive Publication Date: 2008-02-06
陈荣华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the welded structure has the following disadvantages. The welding process will definitely leave more or less welds and holes, so it will inevitably affect the strength of the welded part of the frame, causing its strength to be greatly reduced compared with that of the non-welded part. Theory and practice have proved that the strength of the weld is less than 70% of the strength of the parent material
Moreover, due to the welding structure, it is not conducive to the development of folding bicycles in the direction of miniaturization. In a folding bicycle, the bracket and the front fork occupy most of the volume of the bicycle, and their size determines the foldable size of the folding bicycle. Therefore, the frame of the welded structure restricts the development of folding bicycles in the direction of miniaturization

Method used

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  • Sleeve type bicycle frame
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  • Sleeve type bicycle frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The sleeve type connection structure is specifically shown in Figure 3. Among the two connected bars of the sleeve type connection structure, one is a "male" bar 21, which is a vertical bar, and the other is a "female" bar. " bar 22, this root is a horizontal bar (this horizontal bar can be regarded as horizontal setting in this figure). The "male" bar 21 has a tenon 211 extending out of the bar body. The tenon 211 and the bar body 212 are integrally formed. The tenon 211 of the "male" bar is perpendicular to the bar body 212. The other "female" bar 22 It is a sleeve-type structure. The shape of the "female" bar matches the shape of the tenon 211 of the "male" bar and is inserted into the tenon 211. For example, if the tenon 211 is cylindrical, then " The female "bar 22 is also cylindrical, but the inner diameter of the "female" bar 22 is slightly larger than the outer diameter of the tenon 211, so that the tenon 211 of the "male" bar 21 and the sleeve of the "female" b...

Embodiment 2

[0027] The structure of this embodiment can also refer to shown in Fig. 3, same, one is " male " bar 21, and this root bar is vertical bar, and another is " female " bar 22, and this root is horizontal bar, and " male " The bar 21 has a tenon 211 extending out of the bar body, and the tenon 211 and the bar body 212 are integrally formed, but the angle α between the tenon 211 of the "male" bar and the bar body 212 in the vertical upward direction is less than 90 degrees . "Female" bar 22 is still a sleeve-type structure, and what is different from the previous embodiment is that "female" bar 22 has a certain angle with the horizontal line, which is a horizontal slash. The shape of the "female" bar 22 matches the shape of the tenon 211 of the "male" bar and is inserted into the tenon 211. For example, if the tenon 211 is cylindrical, the "female" bar 22 is also Cylindrical type, but the inner diameter of "female" bar 22 will be slightly larger than the outer diameter of tenon 2...

Embodiment 3

[0030] Similarly, referring to Fig. 3 and shown in Fig. 5, the vehicle frame can be provided with two or more "male" bars 21, 23, and at least one "female" bar 22, and in Fig. 3, another " Public " bar 23 is not illustrated, and Fig. 5 then shows another " public " bar 23 schematically, and the vehicle frame of this moment is then made of two " public " bars 21,23 and a " female " bar 22 . Each "male" bar (taking the "male" bar 21 as an example) has a tenon 211 extending out of the bar body, the tenon 211 and the bar body 212 are integrally formed, and the "female" bar 22 is a sleeve Type structure, the shape of the "female" bar 22 is adapted to the shape of the tenons of the two "male" bars, and its two ends are nested in the tenons of the two "male" bars.

[0031] Of course, the tenon 211 of the "male" bar 21 and the bar body 212 can also be vertical, or the angle between the tenon 211 of the "male" bar and the vertical direction of the bar body 212 is greater than 90 degree...

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Abstract

The invention discloses a telescope feed bicycle frame. One of bars of the bicycle frame is connected with the other parts of the bicycle, or two of bars are in telescope feed connection structure with one serving as a male bar and the other serving as a female bar. The male bar is provided with a tenon which is integrated with the bar body and extends out of the bar body, and the female bar which is a telescope feed structure has a form adaptive to the form of the tenon of the male bar and encloses the tenon. The bicycle frame has the following advantages that: 1 concerning the two connected bars, as the tenon of the male bar is integrated with the bar body and the female bar encloses the tenon, the bicycle frame has a firmer structure with the structural rigidity greater than the self rigidity of the bar bodies; 2 the joint between bars of the bicycle frame looks more beautiful; 3 the bicycle frame enables easier disassembly and folding, thereby facilitating development of folding bicycles and common bicycles toward miniaturization.

Description

technical field [0001] The invention relates to parts of a two-wheeled vehicle that relies on manpower to pedal, more specifically to a sleeve type bicycle frame. Background technique [0002] Bicycle is very familiar to the general public, and it can be used as a means of transportation for people to walk, and can also be used as equipment for people's leisure sports. Whether it is a means of transportation or equipment for leisure sports, the development trend of bicycles is that, in terms of sensory perception, they require beautiful appearance, unique and novel shapes and colors, and various styles; in terms of structure, they require firmness and simplicity; in terms of volume and weight, Miniaturization and portability are required, and for miniaturization and portability, light metal brackets, folding structures, and reduced diameters of front and rear wheels are used. Whether it is an ordinary bicycle or a folding bicycle, the frame is an indispensable part of the b...

Claims

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Application Information

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IPC IPC(8): B62K19/18
Inventor 王杏生陈荣华陈荣仙华康成
Owner 陈荣华
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