Positioning Structure for a Bicycle Hub and Method for Making the Same
a technology for positioning structure and bicycle hub, which is applied in the direction of hubs, vehicle components, transportation and packaging, etc., can solve the problems of severe affecting riding safety and the following problems of the conventional bicycle hub, and achieve the effect of reducing machining time, increasing machining speed and avoiding the ruin of the bicycle hub
Inactive Publication Date: 2008-12-04
BITEX IND
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0008]The primary objective of the present invention is to provide positioning structure for a bicycle hub formed by a quick press forming process, the second objective of the present invention is to provide a positioning structure for a bicycle hub which doesn't affect the strength of structure.
[0012]1. The press forming process of the positioning structure 24 of the bicycle hub 20 is performed by using points as the punching and pressing targets without influencing the structure strength of the receiving portion 23, so that the receiving portion 23 of the bicycle hub 20 is strong enough to load the weight, and the rider can ride safely without worrying about the ruin of the bicycle hub.
Problems solved by technology
However, this conventional bicycle hub still has the following problems:
Moreover, if the bicycle hub 10 breaks during a high speed ride, it will severely affect the riding safety.
Method used
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[0022]The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
[0023]Referring to FIGS. 2-7, a bicycle hub 20 (as shown in FIG. 2) in accordance with a preferred embodiment of the present invention comprises a hollow cylindrical hub shell 21. Each end of the hub shell 21 is radially formed with a ring-shaped fixing portion 22. The fixing portion 22 is provided for the insertion of the spokes of the bicycle wheel to support the weight of the bicycle frame. One side of each of the fixing portion is axially formed with a hollow cylindrical receiving portion 23.
[0024]The bicycle hub 20 is pressed by a positioning machine 30 and a punch 40 to form a positioning structure 24. The positioning machine 30 (as shown in FIG. 3) includes an upper clamping arm 31 and a lower clamping arm 32 for clamping the outer surface...
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Abstract
A bicycle hub comprises a hub shell each end of which is formed with a receiving portion. The outer surface of the rub shell is clamped by a positioning machine, and the inner surface of each receiving portion is axially pressed to form at least three positioning structures. The positioning structures are formed by the following steps: A. bicycle hub clamping step; B. bicycle hub press forming step; and C. bicycle hub loading step. By such arrangements, the positioning structures of the bicycle hub can be obtained by the quick press forming without affecting the structure strength.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a bicycle hub, and more particularly to a positioning structure for a bicycle hub and a method for making the same.[0003]2. Description of the Prior Art[0004]Bicycle is a traffic tool for leisure sport and racing, which is not only environmental friendly, but also can provide exercise for the rider. The bicycle hub is an important component for connecting the bicycle frame and the wheel. As shown in FIG. 1, the bicycle hub 10 comprises a hollow cylindrical hub shell 11. Each end of the hub shell 11 is formed with a ring-shaped fixing piece 12 in the radial direction, and one side of each of the fixing piece is formed with a circular flange 13. Under the original thickness, the inner wall of the flange 13 is cut thin to form a positioning structure 14. A bearing A is embedded in each of the two flanges 13 and is positioned by the positioning structure 14. However, this conventional bicycl...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60B27/00
CPCB60B27/0078B60B27/023Y10T29/49506Y10T29/49481Y10T29/49524Y10T29/49492Y10T29/49529Y10T29/49536Y10T29/49513
InventorHSIEH, TE- YAO
OwnerBITEX IND