CN101716872A - Aluminum alloy bicycle rim - Google Patents
Aluminum alloy bicycle rim Download PDFInfo
- Publication number
- CN101716872A CN101716872A CN200910259696A CN200910259696A CN101716872A CN 101716872 A CN101716872 A CN 101716872A CN 200910259696 A CN200910259696 A CN 200910259696A CN 200910259696 A CN200910259696 A CN 200910259696A CN 101716872 A CN101716872 A CN 101716872A
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- Prior art keywords
- side wall
- aluminum alloy
- connecting portion
- rim
- right sidewall
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Abstract
The invention relates to an aluminum alloy bicycle rim, belonging to the field of the bicycle. The aluminum alloy bicycle rim comprises a body in the shape of a circular ring. The cross section of the body is provided with a left side wall and a right side wall; the bottom of the left side wall is connected with the bottom of the right side wall through a first connecting part; the middle-upper part of the left side wall is connected with the middle-upper part of the right side wall through a second connecting part; the upper part of the left side wall, the upper part of the right side wall and the second connecting part form the shape of the U which is opened upwards; and the lower end of the left side wall and the lower end of the right side wall respectively extends downwards to form the downwards-extending part of the left side wall and the downwards-extending part of the right side wall. The downwards-extending part of the left side wall, the downwards-extending part of the right side wall and the first connecting part form the shape of the U which is opened downwards so that the first connecting part can not be deformed under the tension of the spokes or the pressure transmitted by the tires due to uneven road, the strength and the deformation resisting ability of the aluminum alloy bicycle rim can be improved, and the moving stability of the bicycle can be enhanced.
Description
Technical field
The present invention relates to bicycle, particularly relate to aluminum alloy bicycle rim.
Background technology
Even to this day, bicycle has become the simplest, the most practical and people in the whole world and has used maximum vehicle.Along with the continuous progress of science and technology, many up-to-date technologys are applied to and make on the bicycle that the performance of bicycle is more and more advanced.For example, the bicycle rack made of aluminum alloy, magnesium alloy, titanium alloy and carbon fiber greatly reduces the weight of bicycle; Many grades of speed-changing mechanisms make that the speed of bicycle is more and more faster.And when the bicycle performance significantly improved, the bicycle traveling comfort was more and more paid close attention to by consumers in general, especially mountain bike.
The wheel of bicycle is the vitals that keeps bicycle to operate steadily, the steel rim finally of wooden rim from the beginning, its material constantly changes, because aluminum alloy is with respect to magnesium alloy, titanium alloy and carbon fibre material low price, and has an advantage in light weight, that can not get rusty, therefore, use maximum working as to count the aluminum alloy rim at present.
At present common aluminum alloy bicycle rim has two kinds of individual layer rim and double-deck rims, the individual layer rim is because spoke cap and inner tube of a tyre direct contact, gall the inner tube of a tyre easily, double-deck rim then overcomes this shortcoming, strengthened simultaneously intensity again, therefore, double-deck rim has bigger advantage with respect to the individual layer rim and is adopted widely.
The cross sectional shape of aluminum alloy double-layer rim as shown in Figure 1, it has left and right two sidewalls 11,12, one end of left and right two sidewalls 11,12 interconnects by first connecting portion 13, the middle part of two sidewalls 11,12 interconnects by following arcs of recesses second connecting portion 14, the left and right sidewall 11,12 and first connecting portion 13 and second connecting portion 14 are formed an approximate trapezoid, left and right sidewall 11,12 extends upward respectively and forms the U-shaped that opening makes progress, and bike tyre is installed in this U-shaped opening.
Though the rim of said structure has improved the intensity of aluminum alloy rim to a certain extent, but, because first connecting portion 13 of rim is in the effect of spoke pulling force for a long time, deform easily, therefore, the long-time back of using is destroyed the circularity of rim easily, thereby influences the bicycle traveling comfort.
Summary of the invention
Technical matters to be solved by this invention is to solve the problem that further improves aluminum alloy rim intensity.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention provides a kind of aluminum alloy bicycle rim, the rim body that comprises annular arrangement, the cross section of described rim body has the left and right side wall, the bottom of left and right sidewall interconnects by first connecting portion respectively, the middle and upper part of left and right sidewall interconnects by second connecting portion respectively, the top of left and right sidewall and second connecting portion form the U-shaped that opening makes progress, and the lower end of left and right sidewall extends to form left and right sidewall lower extension respectively downwards.
In the such scheme, the end of described left and right sidewall lower extension is circular arc.
The length of described first connecting portion is less than the length of second connecting portion.
Described left and right sidewall is the evagination arc shape.
Be respectively equipped with groove on the middle and upper part outside face of described left and right sidewall.
Described second connecting portion is recessed circular-arc.
The present invention, the left and right sidewall lower extension and first connecting portion form the U-shaped that Open Side Down, when this U-shaped structure design makes the connecting portion of winning bear the pressure of tire transmission at the pulling force that is subjected to spoke or owing to Uneven road, can resist the distortion of first connecting portion, thereby strengthen the intensity and the non-deformability of rim, increase the stationarity of cycle racing.
Description of drawings
Fig. 1 is the schematic cross-section of existing double-layer aluminium alloy rim;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a schematic cross-section of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made detailed explanation.
Fig. 2 is a structural representation of the present invention; as shown in Figure 2; the present invention includes the rim body 20 of annular arrangement; the cross section of rim body 20 as shown in Figure 3; in this cross section; rim body 20 has a left side; right side wall 21; 22; a left side; right side wall 21; 22 bottom interconnects by first connecting portion 23 respectively; a left side; right side wall 21; 22 middle and upper part interconnects by second connecting portion 24 respectively; a left side; right side wall 21; 22 the top and second connecting portion 24 form a U-shaped and the left side that opening makes progress; right side wall 21; 22 top is respectively equipped with the projection of protruding in opposite directions 27; 28; the mounting of tyre of bicycle is in this U-shaped opening and by projection 27; the 28 spacing tires that prevent are deviate from; second connecting portion 24 is recessed circular-arc; the profile of this circular arc and bike tyre is suitable; this structure can more effectively be alleviated projection 27; the pressure of 28 pairs of tires; thereby the protection tire prevents projection 27; 28 pairs of Tyte Wear.A left side, right side wall 21,22 lower end extends to form a left side respectively downwards, right side wall lower extension 29,30 and lower extension 29, the cross section of 30 ends is circular arc, a left side, right side wall lower extension 29,30 and first connecting portion 23 forms the approximate U-shaped that Open Side Down, when this U-shaped structure design makes the connecting portion 23 of winning bear the pressure of tire transmission at the pulling force that is subjected to spoke or owing to Uneven road, a left side, right side wall lower extension 29,30 can resist the distortion of first connecting portion 23, thereby strengthen the intensity and the non-deformability of rim, increase the stationarity of cycle racing.In addition, after the spraying of rim finished surface, behind the friction face of turning processing rim body left and right sides sidewall 21,22, increase the operation of left and right sidewall lower extension 29,30 together again, like this, the aluminium true qualities that appear light after left and right sidewall lower extension 29,30 turning with the integral color formation sharp contrast of spraying, are given a kind of fresh and new sensation of people.
Further, the length of first connecting portion 23 is less than the length of second connecting portion 24, like this, the left and right sidewall 21,22 and first connecting portion 23 and second connecting portion 24 are formed the structure of an approximate trapezoid, and the advantage of this structure is that the impact of resisting longitudinal is strong, and big again intensity circumferential deformation can not take place yet, simultaneously can also reduce air resistance, in order further to reach above-mentioned effect, left and right sidewall 21,22 is the evagination arc shape, can will indulge power pulling force or impulsive force to horizontal dispersion better.
Bicycle rim provided by the invention, the middle and upper part 25,26 of its left and right sidewall 21,22 is the friction face of brake, be respectively equipped with groove 31,32 on the outer surface of this friction face 25,26, this groove 31,32 has formed a circle secure ID line on friction face 25,26, after bicycle uses certain hour, the friction face 25,26 of rim produces wearing and tearing under the brake rubber block friction, so the degree of depth of groove 31,32 reduces, when friction face 25,26 is concordant with the bottom of groove 31,32, the rim serious wear is described, should change, thus assurance user's safety.
The invention is not restricted to above-mentioned embodiment, anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (6)
1. aluminum alloy bicycle rim, the rim body that comprises annular arrangement, the cross section of described rim body has the left and right side wall, the bottom of left and right sidewall interconnects by first connecting portion respectively, the middle and upper part of left and right sidewall interconnects by second connecting portion respectively, the top of left and right sidewall and second connecting portion form the U-shaped that opening makes progress, and it is characterized in that the lower end of left and right sidewall extends to form left and right sidewall lower extension respectively downwards.
2. aluminum alloy bicycle rim as claimed in claim 1 is characterized in that the end of described left and right sidewall lower extension is circular arc.
3. aluminum alloy bicycle rim as claimed in claim 1 or 2 is characterized in that the length of the length of described first connecting portion less than second connecting portion.
4. aluminum alloy bicycle rim as claimed in claim 3 is characterized in that described left and right sidewall is the evagination arc shape.
5. aluminum alloy bicycle rim as claimed in claim 4 is characterized in that being respectively equipped with groove on the middle and upper part outside face of described left and right sidewall.
6. aluminum alloy bicycle rim as claimed in claim 5 is characterized in that described second connecting portion is recessed circular-arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259696A CN101716872A (en) | 2009-12-23 | 2009-12-23 | Aluminum alloy bicycle rim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259696A CN101716872A (en) | 2009-12-23 | 2009-12-23 | Aluminum alloy bicycle rim |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101716872A true CN101716872A (en) | 2010-06-02 |
Family
ID=42431544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910259696A Pending CN101716872A (en) | 2009-12-23 | 2009-12-23 | Aluminum alloy bicycle rim |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101716872A (en) |
-
2009
- 2009-12-23 CN CN200910259696A patent/CN101716872A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100602 |