Machine element or mechanism – Control lever and linkage systems – Elements
Utility Patent
1995-01-24
2001-01-02
Luong, Vinh T. (Department: 3682)
Machine element or mechanism
Control lever and linkage systems
Elements
C074S551800
Utility Patent
active
06167780
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a bicycle, and more particularly to a device for adjusting and locating the steering bearing of a bicycle head bowl.
BACKGROUND OF THE PRESENT INVENTION
As disclosed in the U.S. Pat. No. 5,095,770, a prior art mechanism for locating and calibrating the bearing of a bicycle head bowl comprises a fastening bolt which is located at the upper end of the handlebar upright tube of the handlebar and is capable of being caused to force an elastic fitting member to expand outwardly and radically so as to be fastened on the inner circumferential fringe of the front fork tube, thereby causing the washer located on the fastening bolt to push the handlebar upright tube to move downwards to urge and locate the steering bearing.
Such a fastening mechanism of the prior art as described above has inherent shortcomings, which are described hereinafter.
The downward displacement of the handlebar upright tube is brought about in the same direction as the fastening bolt is fastened. As a result, the displacement distance of the handlebar upright tube is corresponding to the fastening distance of the fastening bolt. For this reason, the bearing of the bicycle head bowl is likely to be fastened excessively I a situation calling for a micro adjustment of the bearing.
The prior art fastening mechanism is complicated in construction and is therefore expensive to make.
SUMMARY OF THE PRESENT INVENTION
It is therefore the primary objective of the present invention to provide a device capable of making a minute fastening of the bearing of a bicycle head bowl. The device for making micro adjusting a steering bearing of a head bowl of a bicycle head tube comprises an inner ring of the steering bearing, a pressing ring and a clamping ring, which are mounted sequentially together in an upper end of the bicycle head tube. An upper end of the clamping ring is fastened with a handlebar upright tube of the bicycle, wherein the clamping ring provides a pair of lugs, each lug having a threaded hole for engaging with a fastening means, the clamping ring is provided with an inner circumferential tapered surface. The inner ring of the steering bearing is provided with an inner circumferential tapered surface. The pressing ring is provided with an upper outer circumferential tapered surface and a lower outer circumferential tapered surface. The upper outer circumferential tapered surface of the pressing ring is engaged with the inner circumferential surface of the clamping ring. The lower circumferential tapered surface of the pressing ring is engaged with the inner circumferential tapered surface of the inner ring. When the clamping ring is fastened by the fastening means, the pressing ring is caused to move downwards to bring about a downward displacement of the inner ring, which results in a minute fastening of the steering bearing.
REFERENCES:
patent: 4850733 (1989-07-01), Shook
patent: 5011104 (1991-04-01), Fang
patent: 5085063 (1992-02-01), Van Dyke et al.
patent: 5095770 (1992-03-01), Rader
patent: 5193930 (1993-03-01), Chi
patent: 5319993 (1994-06-01), Chiang
patent: 5331864 (1994-07-01), Chi
patent: 5387255 (1995-02-01), Chiang
patent: 5445047 (1995-08-01), Chi
patent: 5454281 (1995-10-01), Chi
Chan Raymond Y.
David & Raymond
Luong Vinh T.
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