Title:
DECELERATION MECHANISM AND MOTOR HAVING DECELERATION MECHANISM INSTALLED THEREIN
Document Type and Number:
WIPO Patent Application WO/2019/194222
Kind Code:
A1
Abstract:
According to the present invention, one engagement protrusion part 31c having a spiral shape is provided in a pinion gear 31, a plurality of engagement recess parts 32d engaged with the engagement protrusion part 31c are provided in a helical gear 32, and the engagement protrusion part 31c and the engagement recess parts 32d are each formed to have an arc shape in a direction perpendicular to the axial direction of the pinion gear 31. As a result, the pinion gear 31 and the helical gear 32 can be configured in an arc-shaped protrusion/recess engagement structure that does not deteriorate the state of engagement therebetween. Also, by increasing the number of teeth on the helical gear 32 while keeping the number of teeth on the pinion gear 31 at one tooth, the difference in the number of teeth can be easily increased. Therefore, the deceleration ratio of a deceleration mechanism 30 can be increased without increasing the volume thereof.
Inventors:
KOJIMA NAOKI (JP)
KOBAYASHI MOTOAKI (JP)
TOKIZAKI TEPPEI (JP)
KAWASHIMA YOSHICHIKA (JP)
KOBAYASHI MOTOAKI (JP)
TOKIZAKI TEPPEI (JP)
KAWASHIMA YOSHICHIKA (JP)
Application Number:
PCT/JP2019/014795
Publication Date:
October 10, 2019
Filing Date:
April 03, 2019
Export Citation:
Assignee:
MITSUBA CORP (JP)
International Classes:
F16H55/08; F16H1/08; H02K7/116; F16H55/06
Foreign References:
| JP2017133582A | 2017-08-03 | |||
| JP2009248852A | 2009-10-29 | |||
| JP2009126328A | 2009-06-11 | |||
| JPH0394455U | 1991-09-26 | |||
| JPS63198861U | 1988-12-21 | |||
| JP2017133582A | 2017-08-03 |
Other References:
See also references of EP 3779240A4
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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