MICROSWITCH AND ACTUATOR

Abstract

A microswitch (2) comprising: a contact chamber (24) accommodating a contact mechanism (23) that opens and closes an electrical circuit; a housing (20) accommodating the contact chamber (24); and a pressure member (21) that receives pressure from outside the housing (20); wherein the pressure member (21) comprises: an insertion part (211) configured to be inserted into the contact chamber (24) through an insertion hole (200) and acting on the contact mechanism (23), the insertion part (211) receiving the pressure, and moving from a first side located outside the housing (20) to a second side located inside the housing (20); wherein the pressure member (21) comprises: a shielding part (212) shielding the insertion hole (200) from the contact chamber side;andwherein the shielding member (212) is larger than the insertion hole (200) in a direction perpendicular to an insertion direction to block the insertion hole (200),wherein a surface on a first side of the shielding member (212) facing the insertion hole (200) of the contact chamber (24) and movable in the insertion direction with the shielding member (212) is adhesive.;

Claims

[1] A microswitch (2) comprising: a contact chamber (24) accommodating a contact mechanism (23) that opens and closes an electrical circuit; a housing (20) accommodating the contact chamber (24); and a pressure member (21) that receives a pressure from outside the housing (20); wherein the pressure member (21) comprises: an insertion part (211) adapted to be inserted into the contact chamber (24) through an insertion hole (200) and acting on the contact mechanism (23), the insertion part (211) for receiving the pressure, and which moves from a first side located outside the housing (20) to a second side located inside the housing (20); wherein the pressure member (21) comprises: a shielding member (212) which shields the insertion hole (200) from the contact chamber side; and wherein the shielding member (212) is larger than the insertion hole (200) in a direction perpendicular to an insertion direction to block the insertion hole (200), wherein a surface on a first side of the shielding member (212) facing the insertion hole (200) of the contact chamber (24) and movable in the insertion direction with the shielding member (212) is adhesive. [2] Microswitch (2) according to claim 1, wherein: the shielding part (212) is plate-shaped; and comprises a peripheral wall (212a) formed projecting at the edge of the shielding member (212) to the first side. [3] Microswitch (2) according to claim 1 or 2, wherein: the shielding part (212) is adhered to the surface due to a coating by an adhesive compound or due to the adhesion of an adhesive component to the surface. [4] Microswitch (2) according to one of claims 1 to 3, wherein: the housing (20) comprises a guide wall (201) around the edge of the shielding part (212) of the pressure component (21) to guide the insertion operation of the pressure component (21). [5] Actuating device (1) comprising: a printing part (10) which receives a printing process external thereto; and a microswitch (2) according to any one of claims 1 to 4; wherein the pressure operation part (10) transmits the pressure operation received thereby to the microswitch (2) as pressure external to the microswitch (2); and wherein the actuating device (1) outputs a signal based on an operation of a contact mechanism (23) in the microswitch (2).

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