Vibration isolator and actuator incorporating same for isolating integral electronics

An electrical rotary driver for mounting to a support surface, comprising:

• a stator housing supporting a lamination stack and coils, the actuator housing having a mounting structure for mounting to the support surface, the mounting structure supporting the electrical rotary driver when the mounting structure is mounted to a support surface;
• a rotor carried for rotation in the stator housing;
• an electronics housing containing electronics controlling output of the electrical driver;
• a barrier gap between the electronics housing and the stator housing isolating the electronics housing from vibrations;
• pairs of axially opposed holes in the stator housing and the electronics housing;
• tie rod assemblies inserted into axially opposed holes, each tie rod assembly having a first end supported by the stator housing and a second end urging the electronics housing toward the stator housing, each tie rod assembly including at least one threaded fastener at one end thereof fastening each tie rod assembly together to urge the electronics housing toward the stator housing, further comprising at least one stop mechanism limiting the fastening of the at least one threaded fastener, the at least one stop mechanism engaging an axially aligned stop surface on the at least one threaded fastener, the axially aligned stop surface projecting radially outwardly relative to the threads of the at least one threaded fastener;
• and
• at least one resilient member supported by the stator housing and engaging the tie rod assembly, the at least one resilient member supporting the electronics housing.

A rotary electrical actuator for mounting to a support surface, comprising:

• a stator housing supporting a lamination stack and coils, the actuator housing having a mounting structure for mounting to the support surface, the mounting structure supporting the actuator when the mounting structure is mounted to a support surface;
• a rotor carried for rotation in the stator housing;
• an electronics housing containing electronics controlling output of the electrical actuator;
• a barrier gap between the electronics housing and the stator housing isolating the electronics housing from vibrations;
• pairs of axially opposed holes in the stator housing and the electronics housing, one of the holes including first and second counterbores at each end;
• first and second resilient o-rings supported by the first and second counterbores, respectively;
• first and second sleeves inserted into each counterbore abutting up against each other, the first and second sleeves including radially outward projecting lips arranged in the first and second counterbores, respectively, the first and second o-rings axially and radially supporting the sleeves preventing contact between the sleeves and the hole;
• a screw extending through the sleeves and the axially opposed holes urging the electronics housing against the stator housing, wherein sleeves limit the fastening of the screw to form a barrier gap between the electronics housing and the stator housing thereby isolating the electronics housing from vibrations.