Title:
COAXIAL CYLINDRICAL TORQUE LIMITER
Document Type and Number:
Japanese Patent JP3933240
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase the diameter of the opening of a rotary tube, easily thrust a semihard magnetic body into the opening, and improve the pressing-in workability by forming a taper section on the inner periphery of the rotary tube.
SOLUTION: This rotary tube 1 is made of a polyolefin resin such as a polyethylene resin or a polybutene resin. A taper section 2 with the inner diameter made gradually narrower toward the lower depth side from the upper opening side is formed on the inner periphery of the rotary tube 1. A cylindrical semihard magnetic body 11 rounded with a rectangular plate-like semihard magnetic body is pressed into the inner periphery of the rotary tube 1, and it is fixed by the spring-elastic restoring force. When a metal shaft 61a and a rotary shaft 61 are rotated and a permanent magnet 3 is rotated, hysteresial torque is applied between the permanent magnet 3 and semihard magnetic body 11, the rotary tube 1 is rotated, and a rubber roller G is rotated. Duplicate feed paper sheets are separated by the force corresponding to the hysteresial torque.
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Inventors:
Teruo Fujioka
Application Number:
JP5937197A
Publication Date:
June 20, 2007
Filing Date:
March 13, 1997
Export Citation:
Assignee:
Yamauchi Co., Ltd.
International Classes:
F16D7/02; F16H35/10; B65H3/52; H02K49/10; G05D17/00; (IPC1-7): F16D7/02; F16H35/10
Domestic Patent References:
| JP52058364U | ||||
| JP58077856U | ||||
| JP3026804U | ||||
| JP6235447A | ||||
| JP33011534Y1 |
Attorney, Agent or Firm:
Ari Chika Genshiro
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