Novel bicycle crank
The utility model relates to a novel bicycle crank whose main body is a main rod punched and drawn by using thin plates. The utility model is matched with reinforcing ribs. The main rod is provided with small holes for assembly and screw holes which can be assembled by using inserting and riveting m...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
03.11.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | The utility model relates to a novel bicycle crank whose main body is a main rod punched and drawn by using thin plates. The utility model is matched with reinforcing ribs. The main rod is provided with small holes for assembly and screw holes which can be assembled by using inserting and riveting method. The utility model is changed from original high-temperature forging to direct punching and drawing shaping by a punch. Thus equipment requirement is decrease; technological process is correspondingly reduced; material quantity is greatly decreased. |
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Bibliography: | Application Number: CN1998216966U |