DRIVE DEVICE, LENS BARREL AND IMAGING APPARATUS

摘要

A drive device includes a moving body having a driven portion with an engagement holding portion and an insertion portion, and an element holding portion holding an optical element; a piezoelectric driver having a piezoelectric element and a drive axis that moves the moving body while being inserted into the insertion portion; and a leaf spring being inserted into the insertion portion, being held by the moving body and urging the drive axis to the driven portion in a pressing direction. In a state in which the leaf spring is inserted into the insertion portion, the leaf spring is elastically deformed in the insertion portion by inserting the drive axis which is inserted into the insertion portion, and the drive axis is pressed against the driven portion by the leaf spring, while the leaf spring is engaged with the engagement holding portion and held by the moving body.

主权项

1. A drive device comprising:
a moving body that has a driven portion in which an engagement holding portion is provided and an insertion portion is formed being open at least on one side thereof and an element holding portion which holds an optical element; a piezoelectric driver that has a piezoelectric element and a drive axis, in which the piezoelectric element expands and contracts when a voltage is applied thereto, the drive axis is displaced in an expansion-contraction direction of the piezoelectric element in response to the expansion-contraction of the piezoelectric element and moves the moving body, and the drive axis is inserted into the insertion portion; and a leaf spring that is inserted into the insertion portion, is held by the moving body and urges the drive axis to the driven portion in a pressing direction, wherein in a state in which the leaf spring is inserted into the insertion portion, the leaf spring is elastically deformed in the insertion portion by inserting the drive axis which is inserted into the insertion portion, and the drive axis is pressed against the driven portion by the leaf spring, while the leaf spring is engaged with the engagement holding portion and held by the moving body.