Sensor unit and structure for attaching sensor unit

A sensor unit attachable to an accommodation hole, the accommodation hole extending through a housing in a first direction and being closed by an overlay on one side in the first direction, the sensor unit being attachable to the accommodation hole from the other side in the first direction, the sensor unit comprising:

• a body including a first portion and a second portion on the other side in the first direction relative to the first portion, the first portion being accommodatable in the accommodation hole of the housing from the other side in the first direction, the second portion being located on the other side in the first direction relative to the accommodation hole with the first portion accommodated in the accommodation hole;
• a detection sensor provided at the body and configured to detect a contact of a detection target with the overlay from the one side in the first direction, with the first portion of the body accommodated in the accommodation hole;
• a vibration generator configured to vibrate the body and the detection sensor, with the first portion of the body accommodated in the accommodation hole, and thereby provide a tactile feedback to the detection target in contact with the overlay;
• a vibration damper constituted by an elastic substance;
• and
• a fixable part provided at the second portion of the body, the fixable part being located on the other side in the first direction relative to a perimeter area of the accommodation hole of the housing with the first portion of the body accommodated in the accommodation hole,
• wherein, with the first portion of the body accommodated in the accommodation hole, the fixable part is fixed to the perimeter area of the accommodation hole of the housing from the other side in the first direction via the vibration damper, and the vibration damper is at least partly interposed between the fixable part and the perimeter area of the accommodation hole of the housing.