Damper, electronic controller, and method for coupling damper

An electronic controller comprising:

• a damper;
• a supporting member;
• and
• a supported member, wherein
• the damper is disposed in a holding hole that passes through, in a passing-through direction, the supported member, the damper comprising
• a tubular body defining therein a through hole that extends in the passing-through direction, wherein
• the tubular body is elastically deformable between a first form and a second form due to elastic force of the tubular body,
• the tubular body has a first outer diameter in the first form and a second outer diameter in the second form,
• the first outer diameter is less than an inner diameter of the holding hole, and the second outer diameter is larger than the inner diameter of the holding hole,
• the tubular body in the first form has an outer shape that is smaller than the holding hole,
• the tubular body in the second form has an outer shape that is greater than the outer shape in the first form and is in contact with the holding hole,
• the tubular body has a first end and a second end opposite to the first end in the passing-through direction,
• the tubular body defines a gap extending between the first end and the second end, and
• the gap is larger in the second form than in the first form,
• wherein the supporting member includes a base positioning portion and a distance adjusting portion that protrudes from an end surface of the base positioning portion,
• wherein the base positioning portion and the distance adjusting portion are housed in the through hole,
• the tubular body in the second form is disposed in the holding hole and presses an inner surface of the holding hole, and
• the supported member is supported by the supporting member through the damper.