초록 ▼

A drive assembly for a seat adjuster is used to adjust the longitudinal position of a vehicle seat between a plurality of positions. The drive assembly includes a first track mounted to a vehicle structure a second track that is supported for longitudinal movement relative to the first track. A brac

A drive assembly for a seat adjuster is used to adjust the longitudinal position of a vehicle seat between a plurality of positions. The drive assembly includes a first track mounted to a vehicle structure a second track that is supported for longitudinal movement relative to the first track. A bracket is fixed relative to the first track and has an opening through which a drive nut is inserted. The drive nut has a threaded central bore and is rotatable between a first position and a second position. In the first position the drive nut moves relative to the bracket through the opening. In the second position the drive nut contacts the bracket to form a positive structural engagement between the drive nut and the bracket. A screw shaft has an elongated body with an external threaded surface that engages the threaded central bore in the drive nut to move the second track between a plurality of adjusted positions relative to the first track. A drive motor is used to drive the screw shaft relative to the drive nut only when the drive nut is moved from the first position to the second position.

대표청구항 ▼

[ We claim:] [1.]1. A dive assembly for a seat adjuster, comprising, in combination:a first member mounted to a vehicle structure and defining a longitudinal axis;a second member supported for movement relative to said first member along said longitudinal axis;a bracket fixed relative to said first

[ We claim:] [1.]1. A dive assembly for a seat adjuster, comprising, in combination:a first member mounted to a vehicle structure and defining a longitudinal axis;a second member supported for movement relative to said first member along said longitudinal axis;a bracket fixed relative to said first member and having at least one opening;a shaft rotatable about an axis of rotation to move said second member relative to said first member;an engagement member attached to the shaft and rotatable about the axis of rotation between a first position where the engagement member moves relative to said bracket through said opening and a second position where said engagement member is fixed relative to said bracket; anda drive motor for diving said shaft relative to said engagement member only when said engagement member is moved from said first position to said second position.