发明名称 |
Clamp for disk rotation driving device and method of manufacturing clamp |
摘要 |
A clamp for a disk rotation driving device has a centering hole which is fitted to an outer circumference of a centering projection of a hub of the disk rotation driving device. A clamping screw is screwed into an axial center of the hub whereby a fastening head of the clamping screw fastens the clamp to the hub and a contact portion of the clamp comes in contact with an information recordable magnetic disk attached to the hub and presses onto the disk in a rotation axis direction. The clamp includes a centering cylinder bent in an axial direction. The centering cylinder has a circumferential inner surface which defines the centering hole. The rounded section is provided along an edge of the centering hole and has a radius smaller than the thickness of the centering cylinder. The fastening surface is continuous to the rounded section.
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申请公布号 |
US8522588(B2) |
申请公布日期 |
2013.09.03 |
申请号 |
US201213410899 |
申请日期 |
2012.03.02 |
申请人 |
SUZUKI SATORU;NHK SPRING CO., LTD. |
发明人 |
SUZUKI SATORU |
分类号 |
B21D5/00;B21D22/00;B21D31/00 |
主分类号 |
B21D5/00 |
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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