A push switch includes a switch contact part for carrying out electrical connection by pressing, a case having a wall part on a periphery thereof and accommodating the switch contact part in a concave portion surrounded by the wall part, and a protective sheet covering the concave portion. The protective sheet and at least a part of an upper surface of the wall part of the case are welded together as a first welding place.
1. A push switch comprising:
a switch contact part for carrying out electrical connection by pressing,
a case having a wall part on a periphery thereof and accommodating the switch contact part in a concave portion surrounded by the wall part; and
a protective sheet covering the concave portion,
wherein the protective sheet and at least a part of an upper surface of the wall part of the case are welded together as a first welding place,
the switch contact part comprises a dome-shaped movable contact,
a pressing member is located between the protective sheet and a center portion of the movable contact, and
the protective sheet and the pressing member are welded to each other by a second welding place provided between the protective sheet and the pressing member.
2. The push switch of claim 1 , wherein the second welding place is welded by laser irradiation.
3. The push switch of claim 1 , wherein the first welding place is formed along an outer periphery of the upper surface of the wall part.
4. The push switch of claim 1 , wherein the first welding place is formed along an inner periphery of the upper surface of the wall part.
5. The push switch of claim 1 , wherein the first welding place has a closed shape seen from an outer side of the protective sheet.
6. The push switch of claim 1 , wherein an outer shape of the first welding place is a rectangular shape seen from an outer side of the protective sheet.
7. The push switch of claim 1 , wherein an outer shape of the first welding place is a polygonal shape seen from an outer side of the protective sheet.
8. The push switch of claim 1 , wherein an outer shape of the first welding place has a circular shape seen from an outer side of the protective sheet.
9. The push switch of claim 1 , wherein the first welding place is welded by laser irradiation.
10. The push switch of claim 1 , wherein at least an upper surface of the wall part of the case is formed of a same material as a material of the protective sheet.