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Method for producing bicycle wheel rim with internally reinforced spoke seats

A bicycle, spoke technology, used in the direction of rims, vehicle components, transportation and packaging

Inactive Publication Date: 2012-05-23
威廉·B·舒克
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There has not been any creative effort to reduce the weight of the overall rim by reinforcing the rim at the individual spoke attachment points and using inserts to distribute the stresses induced by the spokes

Method used

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  • Method for producing bicycle wheel rim with internally reinforced spoke seats
  • Method for producing bicycle wheel rim with internally reinforced spoke seats
  • Method for producing bicycle wheel rim with internally reinforced spoke seats

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] refer to figure 1 The rim blank 10 includes a circumferentially extending spoke region or spoke bed 12 , two mutually opposing braking surfaces 14 and two mutually opposing sidewalls 16 extending between the spoke regions 12 and the braking surfaces 14 . A transverse web or upper web 18 extends between the upper portions of the extruded billet 10 adjacent the braking surface 14 . A tire side panel 20 extends upwardly from the transverse web 18 and terminates in a round edge tire hook 22 . The spoke region 12 has an outer or lower surface 24 and an inner or upper surface 26 .

[0021] exist figure 2 , showing a set for thickening the spoke holes ( figure 2 (not shown) part of the metal around the spoke area, and the spoke holes will be formed on the rim blank 10. An anvil 30 is positioned below the spoke region 12 and has a recess 32 therein. The recesses on the anvil 30 are capable of receiving and supporting the spoke region 12 and, in particular, the outer or ...

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PUM

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Abstract

The invention provides a method for producing a bicycle wheel rims with internally reinforced spoke seats are disclosed. The rims are produced from a rim blank with at least one circumferentially extending spoke attachment region that has a relatively uniform given thickness. Access holes are formed in an upper web of the rim blank and tooling is positioned above and below the spoke attachment region to form a reinforced spoke seat and a spoke hole therein. Material that is upset and moved from the location of the spoke hole is displaced into an annular region where it reinforces the spoke hole. Material in the vicinity of the spoke hole can be displaced towards the inside of the rim and material can be removed from the undisplaced portions of the spoke region leaving a reinforced area around the spoke hole.

Description

technical field [0001] This invention relates generally to rims for human-powered vehicles such as bicycles and wheelchairs, and more particularly to a novel rim with reinforced spoke seats and a method of manufacture thereof. Background technique [0002] The following presents an overview of the relevant technology including the information disclosed in 37 CFR 1.97 and 37 CFR 1.98. [0003] Considerable efforts have been made to reduce the weight of the wheels of human-powered vehicles, especially the rims of bicycles. The typical manufacturing method of a bicycle rim is to first use an extrusion process to make a material such as aluminum alloy into a straight profile with a cross-section corresponding to the cross-section of the finished rim, and then cut the profile into sections of required length. The section is then rolled into a ring shape, and finally the two free ends are connected by riveting or welding. On the finished rim, the greatest stresses in the rim ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B21/06
CPCB21D53/30Y10T29/49524Y10T29/49529Y10T29/49513
Inventor 威廉·B·舒克
Owner 威廉·B·舒克