Multi-gear knob contact type switch

The invention discloses a multi-gear knob contact type switch which comprises a shell, a gear support sleeved with the shell, a movable contact module installed in the gear support and a gear block used for driving the movable contact module to achieve different gear functions, and the gear block is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHEN CHENGKAI, DAI XINDI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a multi-gear knob contact type switch which comprises a shell, a gear support sleeved with the shell, a movable contact module installed in the gear support and a gear block used for driving the movable contact module to achieve different gear functions, and the gear block is rotationally arranged between the gear support and the shell in a sleeved mode. The movable contactmodule comprises a PCB, a plurality of movable contact pieces, sliding block assemblies connected with the movable contact pieces in a one-to-one correspondence mode and gear elastic pieces connectedwith the sliding block assemblies in a one-to-one correspondence mode. When the gear block rotates, the gear elastic pieces drive the sliding block assemblies in sequence to drive the corresponding movable contact pieces to slide on the PCB. According to the multi-gear knob contact type switch, small current control can be met, the function is stable, the risk of windscreen wiper function failureis avoided, the fault rate