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Title:
REDUCTION DEVICE
Document Type and Number:
Japanese Patent JP2012177400
Kind Code:
A
Abstract:

To provide a reduction device configured in such a manner that roller guiding bearings which are pressure-fitted on eccentric circular plates of an input shaft are stably installed to suppress reduction in the efficiency due to the coming out of the bearings.

The input shaft 7 is disposed so as to be coaxial with a stationary arranged internal gear 3, two eccentric circular plates 9 which can rotate within the internal gear 3 are provided to the input shaft 7, and roller guiding bearings 11 are pressure-fitted on the respective outer diameter surfaces of the eccentric circular plates 9. A circular protrusion 21 is provided between the two eccentric circular plates 9, and staking protrusions 22 are provided at an axially opposing end of the two eccentric circular plates 9 and an end on the opposite side thereof. The staking protrusions 22 and the annular protrusion 21 prevent the bearing 11 from moving in the axial direction.


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Inventors:
SATO KOJI
AKIYOSHI KOJI
NAKAKOJI MASAFUMI
Application Number:
JP2011000039829
Publication Date:
September 13, 2012
Filing Date:
February 25, 2011
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16H13/08; F16C19/16; F16C33/38; F16C33/66; F16C35/063; F16C35/073
Domestic Patent References:
JP2010038362A2010-02-18
JPH0225756U1990-02-20
JPH02118232A1990-05-02
JP2009079654A2009-04-16
JP2008115954A2008-05-22
JP2007040383A2007-02-15
JP2009185978A2009-08-20
JPS6293565A1987-04-30
JP2009115128A2009-05-28
Attorney, Agent or Firm:
鎌田 文二
鎌田 直也
中谷 弥一郎
清水 隆