Trigger switch

A trigger switch, comprising:

• a trigger, receiving a pushing operation;
• a shaft member, supporting the trigger on one end side thereof;
• a housing, in which a through hole is opened through which an other end side of the shaft member passes, in which the shaft member moves inside the housing due to the pushing operation on the trigger;
• and
• a return spring, wound around the shaft member outside the housing and energizing the shaft member in a direction opposite to a pushing direction, wherein
• the trigger switch further comprises a covering member that covers the shaft member in a circumferential direction, has its inside sealed, and is expandable and contractible in an axial direction;
• the covering member has one end side attached to an outer periphery of the shaft member and has an other end side attached to a periphery of the through hole of the housing;
• the covering member is attached so as to cover the return spring that is wound around the shaft member outside the housing;
• a fitting part is formed on an outer peripheral surface of the shaft member;
• the one end side of the covering member is fitted into the fitting part formed on the shaft member;
• and
• the trigger is able to be attached to and removed from the one end side of the shaft member.