Actuator unit, method for producing an actuator unit, and sleeve for accommodating a piezoactuator

摘要

The invention relates to an actuator unit, which comprises a piezoactuator (1) having a first end face (14′) and a second end face (13′). The actuator unit further comprises a sleeve (9) for accommodating the piezoactuator (1), wherein the sleeve (9) has a first end face (14) and a second end face (13). The actuator unit further comprises a potting compound (11) which surrounds the piezoactuator (1). The piezoactuator (1) and the potting compound (11) are introduced into the sleeve (9). The potting compound (11) extends no further than the first end face (14′) of the piezoactuator (1). The invention further relates to a method for manufacturing an actuator unit and a sleeve for accommodating a piezoactuator.

主权项

1. An actuator unit comprising:
a piezoactuator having a first end face and a second end face; a sleeve for accommodating the piezoactuator, the sleeve having a first end face or end side and a second end face or end side; and a casting compound which surrounds the piezoactuator, the piezoactuator and the casting compound being inserted into the sleeve, and the casting compound reaching at most as far as the first end face of the piezoactuator, wherein the first end face or end side of the sleeve is open and suitable for the insertion of the piezoactuator into the sleeve, wherein the second end face or end side of the sleeve forms the bottom of the sleeve being formed differently in comparison to the first end face or end side and comprising an aperture, wherein the second end face of the piezoactuator is inserted into the aperture in such a way that the second end face of the piezoactuator protrudes out of the second end face or end side of the sleeve, wherein the piezoactuator comprises two connection elements, a portion of the connection elements protruding out of and beyond the first end face of the piezoactuator, and wherein the casting compound terminates flushly with the first end face of the piezoactuator.