| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor actuator that can reduce impact force due to impingement of a contact member against a cam body and perform ON/OFF of a switch with high precision.SOLUTION: A motor actuator has a cam member which rotates in one direction through transmission of driving force from a motor, a switch contact piece which is formed of an electrically conductive elastic body and pressed outwards in the radial direction of the cam member to be elastically deformed, and a restriction portion that restricts a movable range of the switch contact piece in the direction to the cam member. The cam member has at least one step portion obtained by radially cutting out the outer peripheral surface like a step. The plural switch contact pieces comprise an inner switch contact piece comprising at least one switch contact piece which is more proximate to the cam member, and an outer switch contact piece adjacent to the inner switch contact piece. The restriction portion comes into contact with only the outer switch contact piece, thereby restricting the falling width of the outer switch contact piece at the step portion.SELECTED DRAWING: Figure 7 |
