PUSH SWITCH

• Main Authors: FUJIMOTO DAIKI, KIKUCHI HIDETAKE
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

To provide a push switch that can reduce the contact noise when a push switch 1 is turned on and suppress an increase in electrical resistance of the electrical connection between two fixed contacts.SOLUTION: A push switch 1 includes a circuit board 3, two fixed contacts 4a and 4b provided on the circuit board 3, a dome-shaped spring 6 that can be displaced between a first position where the spring is located above the two fixed contacts 4a and 4b, and the two fixed contacts 4a and 4b are in the non-conducting state, and a second position where the two fixed contacts 4a and 4b are in the conductive state, and a conductive elastic member 7 provided on the surface of the dome-shaped spring 6 facing the circuit board 3. At least the surfaces of the conductive elastic member 7 facing the two fixed contacts 4a and 4b have conductivity. When the dome-shaped spring 6 is displaced to the second position, the two fixed contacts 4a and 4b are brought into a conductive state via the conductive elastic member 7.SELECTED DRAWING: Figure 4 【課題】プッシュスイッチ１がオン状態となる際の接触音を低減すると共に、２つの固定接点間の電気的接続の電気抵抗の増加を抑制することが可能なプッシュスイッチを提供すること。【解決手段】プッシュスイッチ１は、回路基板３と、回路基板３上に設けられた２つの固定接点４ａ、４ｂと、２つの固定接点４ａ、４ｂの上側に配置され、２つの固定接点４ａ、４ｂを非導通状態とする第１の位置と、２つの固定接点４ａ、４ｂを導通状態とする第２の位置との間で変位可能なドーム状バネ６と、ドーム状バネ６の回路基板３と対向する面上に設けられた導電性弾性部材７と、を含む。少なくとも導電性弾性部材７の２つの固定接点４ａ、４ｂと対向する面は、導電性を有している。ドーム状バネ６が第２の位置へ変位した際、導電性弾性部材７を介して、２つの固定接点４ａ、４ｂが導通状態となる。【選択図】図４