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US 6,003,397 AGranted
Rotary output transmitting structure with a slidable washer
AssigneeAsmo Co., Ltd.
InventorNobuyuki Yasuhira
Life of this patent
Estimating the term…
Abstract
A slidable washer (30) has a cylindrical part and a plane part joined thereto. The cylindrical part is placed between an inner circumferential face of a gear wheel (24) and an outer circumferential face of a boss part (23) of a gear housing (22) in order to reduce the frictional force caused during sliding movement therebetween. Further, the plane part joined to the cylindrical part is placed between a side (24b) of the gear wheel (24) and a base (22a) of the gear housing (22) so that the sliding frictional force therebetween is reduced and the cylindrical part of the slidable washer (30) is prevented from inclining toward the axial direction of the boss part (23).
Claims16
A rotation output transmitting structure comprising:
- a rotor with a worm;
- an output shaft;
- a gear wheel engaged with said worm and rotated in a reduced speed;
- a gear housing made of resin and having a cylindrical boss and a bottom face, said cylindrical boss rotatably supporting said output shaft at an inner circumferential face thereof and rotatably supporting said gear wheel at an outer circumferential face thereof;
- and
- a slidable washer made of metal and having a first cylindrical part, a second cylindrical part and an end wall connecting said first and second cylindrical parts, said first cylindrical part being interposed between an inner circumferential face of said gear wheel and said outer circumferential face of said cylindrical boss, said second cylindrical part being interposed between said inner circumferential face of said cylindrical boss and an outer circumferential face of said output shaft.
3 more elements
A rotation output transmitting structure comprising:
- a rotor with a worm;
- an output shaft;
- a gear wheel engaged with said worm and rotated in a reduced speed;
- a gear housing made of resin and having a cylindrical boss and a bottom face, said cylindrical boss rotatably supporting said output shaft at an inner circumferential face thereof and rotatable supporting said gear wheel at an outer circumferential face thereof;
- and
- a slidable washer made of metal and having a first cylindrical part and a second cylindrical part, said first cylindrical part being interposed between an inner circumferential face of said gear wheel and said outer circumferential face of said cylindrical boss, and said second cylindrical part being interposed between said inner circumferential face of said cylindrical boss and an outer circumferential face of said output shaft;
- wherein said slidable washer further has a ring-shaped plane part extending radially from said first cylindrical part and interposed between said bottom face of said gear housing and a side face of said gear wheel facing said bottom face;
- said gear wheel is formed with a protrusion part protruding from said side face toward said bottom face;
- and
- said plane part of said slidable washer is interposed between said protrusion part and said bottom face.
7 more elements
A rotation output transmitting structure comprising:
- a rotary member;
- an output shaft;
- a cushioning member disposed between said output shaft and said rotary member for transmitting torque from said rotary member to said output shaft;
- a slidable washer disposed between said rotary member and said output shaft and having a first cylindrical part, a second cylindrical part that is coaxial with said first cylindrical part and having a diameter larger than that of said first cylindrical part, and a ring-shaped end wall connecting said first and second cylindrical parts;
- and
- a housing having a cylindrical boss and a bottom face, said cylindrical boss protruding from said bottom face in an axial direction of said output shaft and interposed between said first and second cylindrical parts of said slidable washer to rotatably support said output shaft and said rotary member via said first and second cylindrical parts.
3 more elements
A rotation output transmitting structure comprising:
- a rotary member;
- an output shaft;
- a cushioning member disposed between said output shaft and said rotary member for transmitting torque from said rotary member to said output shaft;
- a slidable washer disposed between said rotary member and said output shaft and having a first cylindrical part, a second cylindrical part that is coaxial with said first cylindrical part and having a diameter larger than that of said first cylindrical part, and a ring-shaped end wall connecting said first and second cylindrical parts;
- and
- a housing having a cylindrical boss and a bottom face, said cylindrical boss protruding from said bottom face in an axial direction of said output shaft and interposed between said first and second cylindrical parts of said slidable washer to rotatably support said output shaft and said rotary member via said first and second cylindrical parts;
- wherein said slidable washer further has a ring-shaped plane part extending radially from said second cylindrical part on an opposite side with respect to said end wall and interposed between said bottom face of said housing and said rotary member facing said bottom face.
4 more elements
Dependencies are inferred from the claim text.