Hand held rotary power tool

A power tool, comprising:

• a tool housing including a wall portion, the wall portion including a switch opening that is defined by a wall edge that extends between an outer surface of the wall portion and an inner surface of the wall portion;
• a motor disposed in the tool housing;
• a power supply that is connected to the motor via an electrical circuit, the electrical circuit disposed in the tool housing;
• and
• an electrical switch disposed in the electrical circuit, the electrical switch including a switch body and a contact element that protrudes from the switch body, the contact element being movable relative to the switch body between a first switch position in which the electrical circuit is open and current is prevented from flowing from the power supply to the motor, and a second switch position in which the electrical circuit is closed and current flows from the power supply to the motor,
• a switch actuator that is disposed in the tool housing so as to be accessible to an operator of the power tool via the switch opening, the switch actuator including a guide plate that is disposed in the tool housing, and a resilient arm that extends from, and is integrally formed with, the guide plate,
• wherein
• the switch actuator is moveable relative to the tool housing between a first actuator position and a second actuator position,
• when the switch actuator is in the first actuator position, the guide plate is disposed inward relative to an inner surface of the wall portion, a first edge portion of the guide plate is positioned at a first guide plate position relative to the tool housing, the resilient arm is offset relative to the guide plate a first distance so as to protrude into the switch opening, and a portion of an edge of the resilient arm is engaged with the wall edge,
• when the switch actuator is in the second actuator position, the guide plate is disposed inward relative to the inner surface of the wall portion, the first edge portion of the guide plate is positioned at a second guide plate position relative to the tool housing, the second guide plate position longitudinally spaced apart from the first guide plate position, the resilient arm is offset relative to the guide plate a second distance, and the second distance is less than the first distance whereby the portion of an edge of the resilient arm is disengaged from the wall edge and is disposed inward relative to the inner surface of the wall portion, and
• the switch actuator cooperates with the contact element in such a way that when the switch actuator is in the first actuator position, the contact element is in the first switch position, and when the switch actuator is in the second actuator position, the contact element is in second switch position.