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Title:
SHAFT SEAL PART STRUCTURE OF GEAR REDUCER
Document Type and Number:
Japanese Patent JP2011127700
Kind Code:
A
Abstract:

To provide a shaft seal part structure of a gear reducer, which prevents the abrasion of a filter and a shaft while protecting an oil seal by the filter effectively removing a foreign substance.

The shaft seal part structure of the gear reducer includes a bearing 42 supporting an output shaft 40, a bearing support part 34a of a gear case 34 and/or a bearing support member 38, the oil seal 46, an oil hole 50, and the filter 52. The bearing 42 includes at least a shielding means 44 on the inner side of the gear case. At least one oil hole 50 is formed in the bearing support part and/or the bearing support member below the output shaft so as to make the gap between the bearing and the oil seal and a space inside the gear case communicated and to guide a lubricating oil to the oil seal. The filter 52 is attached to the bearing support part 34a and/or the bearing support member 38 so as to cover the opening of the oil hole 50. Thus, the effective removal of a foreign substance by the shielding means of the bearing and the filter and the protection of the oil seal are achieved, attaining appropriate lubrication and life extension of each member including the shaft and the filter.


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Inventors:
TSUBOTA JUNICHI
Application Number:
JP2009287178A
Publication Date:
June 30, 2011
Filing Date:
December 18, 2009
Export Citation:
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Assignee:
TSUBAKI EMERSON CO
International Classes:
F16H57/04; F16C33/66; F16C33/78; F16H57/028; F16H57/029; F16H57/03; F16J15/32; F16J15/3212; F16J15/324
Domestic Patent References:
JP2001263460A2001-09-26
JP2009264570A2009-11-12
JPH03150045A1991-06-26
JP2006336689A2006-12-14
JP2007046653A2007-02-22
JPS3825304Y1
JP2004044719A2004-02-12
JP2001263460A2001-09-26
JP2009264570A2009-11-12
JPH03150045A1991-06-26
JP2006336689A2006-12-14
Attorney, Agent or Firm:
Yohei Kinoshita