Title:
LINEAR DC MOTOR
Document Type and Number:
WIPO Patent Application WO/2014/041711
Kind Code:
A1
Abstract:
A linear DC motor (1) having first and second drive coils (11, 12) and first and second drive magnets (14, 15) arranged in a symmetrical state in relation to a motor central axis (1a) that passes through a sliding member (6) in which a lens (9) is mounted. The first and second coils (11, 12) on a moveable side are positioned to both the left and right sides of the sliding member (6). The first and second drive coils (11, 12) are designed to be independent without being affected by the shape, size, arrangement position, and the like of the sliding member (6), a linear guide (3), and a detection part (16). The first and second drive coils (11, 12) have high rigidity and do not deform when the sliding member (6) slides. Accordingly, it is possible to obtain a linear DC motor that has a highly rigid moveable part and performs positioning action with high responsiveness and high precision.
Inventors:
MARUYAMA TOSHIKI (JP)
TERASHIMA TOMOKI (JP)
TERASHIMA TOMOKI (JP)
Application Number:
PCT/JP2013/000238
Publication Date:
March 20, 2014
Filing Date:
January 18, 2013
Export Citation:
Assignee:
HARMONIC DRIVE SYSTEMS (JP)
International Classes:
H02K33/18
Foreign References:
| JPH01129750A | 1989-05-23 | |||
| JP2008035645A | 2008-02-14 | |||
| JPH05328696A | 1993-12-10 | |||
| JP2003088082A | 2003-03-20 | |||
| JPH0265645A | 1990-03-06 | |||
| JPS58211363A | 1983-12-08 | |||
| JPH0562383A | 1993-03-12 | |||
| JP2011237507A | 2011-11-24 |
Attorney, Agent or Firm:
YOKOZAWA, Shiro (JP)
Shiro Yokozawa (JP)
Shiro Yokozawa (JP)
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