Static sealed rotary switch with shielding function

Abstract

The invention discloses a static sealed rotary switch with a shielding function, comprising a rotating shaft, and a shell and a positioning seat which sleeve the rotating shaft. The positioning seat is buckled onto the lower end of the shell. A pressure spring and steel balls are arranged inside the shell, the pressure spring sleeves the rotating shaft, and the steel balls are disposed at the two ends of the pressure spring. The lower end of the rotating shaft is further connected with a base assembly. The base assembly comprises a base, a rotor and a middle conductive element. The rotor is installed in the center position inside the base, and is connected with the lower end of the rotating shaft. The middle conductive piece is installed on the base through insertion. A plurality of conductive elements are uniformly arranged on the outer side of the rotor inside the base. A moving contact piece is arranged on the rotor, and the moving contact piece is riveted to a contact below the moving contact piece. The center shaft is rotated to drive a change-over mechanism of the switch to move around the axis, so that the multi-circuit switching function of the switch is realized. The switch has good sealing performance, and can shield all kinds of electromagnetic interference effectively.

Description

technical field [0001] The invention belongs to the technical field of switches, and relates to a rotary switch, in particular to a static sealed rotary switch with a shielding function. Background technique [0002] A rotary switch refers to a switch that drives the switching mechanism of the switch to move around the axis by rotating the central shaft, thereby realizing the switching function of the multi-channel circuit of the switch. Most of the existing high-current rotary switches are closed or open, and the volume is large without electromagnetic shielding function. At present, there are almost no small, high-current sealed rotary switches with electromagnetic shielding and sealing functions. In today’s ever-changing science and technology, There are more and more rotary switches that require small size, high current, sealing and electromagnetic shielding function. Without sealing function, it is difficult to use in harsh environmental conditions such as humidity, sal...

AI Technical Summary

Problems solved by technology

However, since the shaft and the shaft sleeve are sealed with a single seal, and the bottom end face is sealed with epoxy resin, the sealing reliability is poor; since the sealing ring material is a common non-conductive sealing material, and the rest is exposed above the panel The parts are all metal parts, so there are defects such as low sealing reliability and poor shielding effect

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