Isolating decoupler
AssigneeThe Gates Corporation
InventorsAlexander Serkh, Dean Schneider, Yahya Hodjat
Life of this patent
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Abstract
An isolator decoupler comprising a shaft (1), a pulley (2) journalled to the shaft, a torsion spring (10) engaged between the pulley and a carrier (9), the torsion spring loaded in an unwinding direction, a wrap spring (11) engaged between the carrier and the shaft, the wrap spring comprising a cylindrical inner portion (94) and a planar outer portion (93) connected by a tapered portion (155), and the inner portion frictionally engaged with the shaft in a winding direction.
Claims16
An isolator decoupler comprising:
- a shaft (1);
- a pulley (2) journalled to the shaft;
- a torsion spring (10) engaged between the pulley and a carrier (9), the torsion spring loaded in an unwinding direction;
- a wrap spring (11) engaged between the carrier and the shaft;
- the wrap spring comprising a cylindrical inner portion (94) and a planar outer portion (93) connected by a tapered portion (155);
- and
- the inner portion frictionally engaged with the shaft in a winding direction.
An isolator decoupler comprising:
- a shaft;
- a pulley journalled to the shaft;
- a torsion spring engaged between the pulley and a carrier, the torsion spring loaded in an unwinding direction;
- a wrap spring engaged between the carrier and the shaft;
- the wrap spring comprising a cylindrical inner portion extending axially and a coplanar outer portion connected to the inner portion by a tapered portion;
- the inner portion frictionally engaged with the shaft in a winding direction;
- and
- the pulley temporarily engagable with the inner portion such that the magnitude of a frictional engagement between the inner portion and the shaft is incrementally reduced upon an increase in torque applied to the pulley.
An isolator decoupler comprising:
- a shaft;
- a pulley journalled to the shaft;
- a torsion spring engaged between the pulley and a carrier, the torsion spring loaded in an unwinding direction;
- a wrap spring engaged between the carrier and the shaft;
- the wrap spring comprising a cylindrical inner portion and a planar spiral outer portion connected by a tangential portion;
- the inner portion frictionally engaged with the shaft in an inner portion winding direction;
- and
- the inner portion incrementally releasable from the frictional engagement with the shaft upon a pressing contact by the pulley.
An isolator decoupler comprising:
- a shaft;
- a pulley journalled to the shaft;
- a spring engaged between the pulley and a carrier, the spring loaded in an unwinding direction;
- a wrap spring engaged between the carrier and the shaft;
- the wrap spring comprising a cylindrical inner portion and a planar spiral outer portion, the outer portion engaged with the carrier;
- the inner portion frictionally engaged with the shaft in a winding direction;
- and
- the inner portion frictional engagement incrementally releasable from the shaft upon application of an incremental pressure by the pulley to the inner portion.
Dependencies are inferred from the claim text.