Fully enclosed dust-proof encoder and assembly method thereof

Abstract

The invention discloses a fully enclosed dust-proof encoder and an assembly method thereof. The fully enclosed dust-proof encoder comprises a metal shell, a spring sheet, a runner, a contact plate, a base body and a plurality of contact pins, wherein an accommodating cavity is concavely formed in the left side of the base body; a left-side opening is formed in the accommodating cavity; the contact pins are embedded and molded into the base body; the contact plate is adaptively positioned at the right side of a rotary positioning plate through a first positioning structure and a second positioning structure and the contact plate and the rotary positioning plate are assembled in the accommodating cavity; the spring sheet is adaptively positioned at the left side of the base body through a third positioning structure and a fourth positioning structure; a positioning projection of the spring sheet is elastically pressed into any positioning groove of the runner; and the metal shell is enclosed into the left-side opening of the accommodating cavity, so that connection points of the spring sheet, the runner, the contact plate and the contact pins are protected into the enclosed accommodating cavity formed by the metal shell and the base body; external dirt of dust and the like is prevented from entering the inside of the encoder; the dustproof effect is improved; the assembly structure among various components of the encoder is simple and reasonable; the assembly efficiency is high, stable and reliable; the operational performance of the encoder is improved; and the overall lifetime of the encoder is prolonged.

Description

Technical field [0001] The invention relates to the encoder field technology, in particular to a fully enclosed dust-proof encoder and an assembly method thereof. Background technique [0002] Encoders generally combine encoding and function switches. Therefore, encoders are also commonly referred to as "encoding switches." There are many types of encoders in the prior art, and their structural relationships are also very different. For example, there is currently a rotary encoder on the market, which mainly includes a rotating body, a contact piece, a base body, and a lead terminal. Drive each contact of the contact piece to make a circular motion to make contact with the preset contact end on the seat body (each contact end is connected to the corresponding lead terminal as a whole), and an electrical signal is generated between the lead terminals. After comparing the ON and OFF signals of the electrical signal, a phase difference is generated to realize the adjustment of vari...

AI Technical Summary

Problems solved by technology

[0003] The aforementioned rotary encoders in the prior art are generally designed with an open structure. During actual application, dirt such as external dust enters the interior of the encoder, which has a negative impact on the performance and service life of the encoder.

And, the existing encoders still have complex structures and high difficulty in assembly, which makes it difficult to improve production and assembly efficiency. Moreover, poor assembly stability will also affect the reliability and service life of the encoder.

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