Title:
MOTOR
Document Type and Number:
Japanese Patent JP2017225337
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor that increases the natural frequency of a cap member by improving the rigidity of the cap member while restricting an increase in the size of the motor.SOLUTION: A motor comprises: a motor body part; and a cap member 15 mounted on the motor body part. The motor body part includes: a stationary part; a rotary part that rotates around a center axis directed in a vertical direction; and a bearing fixed to the stationary part and supporting the rotary part such that the rotary part is rotatable. The cap member 15 includes: a top surface part 151 extending substantially perpendicular to the center axis; a bottom face part 152 arranged below the top surface part 151 and larger in outer diameter than the top surface part 151; and a connection part 153 connecting the top surface part 151 and a bottom surface part 152. The connection part 153 includes: a first connection part 1531 connecting an outer edge of the top surface part 151 and an outer edge of the bottom surface part 152; and a second connection part 1532 connecting an outer edge of the top surface part 151 and an inner edge of the bottom surface part 152.SELECTED DRAWING: Figure 2
Inventors:
MATSUDA SHIGEKATSU
FURUKAWA KEIZO
FURUKAWA KEIZO
Application Number:
JP2017115248A
Publication Date:
December 21, 2017
Filing Date:
June 12, 2017
Export Citation:
Assignee:
NIHON DENSAN KK
International Classes:
H02K5/04; H02K5/22; H02K11/33
Domestic Patent References:
| JP2005261086A | 2005-09-22 | |||
| JP2011167054A | 2011-08-25 | |||
| JPH07245917A | 1995-09-19 | |||
| JP2014039429A | 2014-02-27 |