发明名称 |
Encoder made of rubber material and method of manufacturing thereof |
摘要 |
An encoder made of rubber material in which the S-poles and the N-poles are alternately magnetized in circumference, whose magnetic force is strong and whose variation of the magnetic force is slight in the circumferential direction when it is magnetized. And a manufacturing method thereof. A ring shaped rubber compound made of unvulcanized rubber material into which magnetic powders are mixed and having thickness t1 of 1.5 times to 5 times thicker than the thickness t of the encoder made of rubber material as the final product is vulcanizingly molded. In this vulcanizingly molding process, the thickness of ring shaped rubber compound is reduced to one fifth (⅕) to two thirds (⅔) by compressing the ring shaped rubber compound in the axial direction under high temperature. And then, vulcanizingly molded one is magnetized S-poles and N-poles alternately in circumference.
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申请公布号 |
US2002027192(A1) |
申请公布日期 |
2002.03.07 |
申请号 |
US20010944342 |
申请日期 |
2001.09.04 |
申请人 |
YAMAGUCHI YOSHIHIKO;TANIGUCHI YASUO |
发明人 |
YAMAGUCHI YOSHIHIKO;TANIGUCHI YASUO |
分类号 |
G01D5/245;G01P1/00;G01P3/487;H01F41/02;(IPC1-7):G01D5/34 |
主分类号 |
G01D5/245 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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