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Title:
POWERED ACTUATOR WITH FRICTION CONTROL MECHANISM FOR TRANSMISSION FOR BICYCLE
Document Type and Number:
Japanese Patent JP2005239149
Kind Code:
A
Abstract:

To provide an actuator device which avoids or reduces the possibility of accidental displacement in an actuator mechanism for a transmission with a motor for a bicycle with a simple and effective way.

The actuator device 100 has an articulated quadrilateral mechanism 101, and a motor member 120 whose length is variable so as to deform the articulated quadrilateral member 101. The motor member 120 has a drive shaft with a screw engaging with a nut 10, that is, the screw 122. The actuator device has a friction control means 40 between the screw 122 and the nut 10, and hampers spontaneous accidental movement between them.


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Inventors:
MEGGIOLAN MARIO
Application Number:
JP2005051001A
Publication Date:
September 08, 2005
Filing Date:
February 25, 2005
Export Citation:
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Assignee:
CAMPAGNOLO SPA
International Classes:
B62M9/122; B62M9/1242; B62M9/1248; B62M9/132; B62M9/1348; B62M25/02; B62M25/08; (IPC1-7): B62M9/12; B62M25/02; B62M25/08
Domestic Patent References:
JPH06323390A1994-11-25
JP2004001728A2004-01-08
JP2001200930A2001-07-27
Attorney, Agent or Firm:
Shuji Sugimoto
Masashi Noda
Kenro Tsutsumi



 
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