Breather structure of actuator
First Claim
1. An electric actuator, comprising:
- a motor and a speed reduction mechanism in a housing;
a recessed groove positioned on an outer surface of the housing;
a breathing hole which is positioned on one side of a bottom surface of the recessed groove and passes through the housing in a first direction;
a filter fixed to the housing and covering the breathing hole from an inside of the housing;
a lid body is fixed to the housing, the lid body partially covering a region of the recessed groove and an entirety of the breathing hole from an outside of the housing when viewed from the first direction;
a breather opening portion positioned at a portion of the recessed groove exposed from the lid body; and
a protrusion portion which protrudes from the bottom surface of the recessed groove to a side of the lid body, the lid body covering an upper end of the protrusion portion when viewed from the first direction;
whereina portion of the protrusion portion is positioned between the breather opening portion and the breathing hole in a second direction that is perpendicular to the first direction;
the protrusion portion is defined by an arcuate wall portion extending along a circumference of the breathing hole, and including a through portion passing though the wall portion in the second direction; and
a total height of the wall portion in the first direction is equal to a total depth of the recessed groove in the first direction.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided a breather structure of an actuator in which the breather structure is provided in a housing of the actuator, the breather structure including: a recessed groove positioned on an outer surface of the housing; a breathing hole which is positioned on a bottom surface of the recessed groove and passes through the housing in a first direction; a filter fixed to an inside of the housing so that the filter closes an opening of the breathing hole; a lid body which partially covers a region of the recessed groove including the breathing hole from an outside of the housing when viewed from the first direction; a breather opening portion positioned at a portion of the recessed groove exposed from the lid body; and a protrusion portion which protrudes from the bottom surface of the recessed groove to a side of the lid body.
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Citations
4 Claims
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1. An electric actuator, comprising:
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a motor and a speed reduction mechanism in a housing; a recessed groove positioned on an outer surface of the housing; a breathing hole which is positioned on one side of a bottom surface of the recessed groove and passes through the housing in a first direction; a filter fixed to the housing and covering the breathing hole from an inside of the housing; a lid body is fixed to the housing, the lid body partially covering a region of the recessed groove and an entirety of the breathing hole from an outside of the housing when viewed from the first direction; a breather opening portion positioned at a portion of the recessed groove exposed from the lid body; and a protrusion portion which protrudes from the bottom surface of the recessed groove to a side of the lid body, the lid body covering an upper end of the protrusion portion when viewed from the first direction;
whereina portion of the protrusion portion is positioned between the breather opening portion and the breathing hole in a second direction that is perpendicular to the first direction; the protrusion portion is defined by an arcuate wall portion extending along a circumference of the breathing hole, and including a through portion passing though the wall portion in the second direction; and a total height of the wall portion in the first direction is equal to a total depth of the recessed groove in the first direction. - View Dependent Claims (2, 3, 4)
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Specification