A contact non-friction sensor resistance plate and its manufacturing method

Abstract

The invention discloses a contact non-friction type sensor resistance plate. The sensor resistance plate comprises a PCB substrate (2), a contact resistance layer (3), a cavity layer (7) (a magnetic conductive soft strip layer (4)) and an insulation protective layer (5), wherein the PCB substrate (2), the contact resistance layer (3), the cavity layer (7) (the magnetic conductive soft strip layer (4)) and the insulation protective layer (5) are sequentially connected in an adhesive mode. The invention further provides a manufacturing method of the sensor resistance plate, the manufacturing method includes the steps that S1, a conductor line layer (203), a bonding pad (201), a via hole (202) and a front face resistance layer (205) are sequentially formed on the PCB substrate (2); S2, the contact resistance layer (3) is formed on soft base material; S3, magnetic conductive soft strips are firstly manufactured, the cavity layer (7) is then formed, and the magnetic conductive soft strips are placed and fixed in the cavity layer (7); S4, the insulation protective layer (5) is formed; S5, all the layers are glued together through glue layers (8). According to the resistance plate, anti-abrasion service life is prolonged substantially, voltage output linearity and anti-electromagnetic interference capacity are prompted substantially, and moreover the manufacturing procedure is simple and suitable for large-scale production.

Description

Technical field [0001] The invention relates to a contact non-friction type resistance plate, in particular to a contact non-friction type sensor resistance plate for sensors, electronic rulers and potentiometers and a manufacturing method thereof. Background technique [0002] Among the current types of position sensors, electronic rulers, and potentiometers, the core technology has two types of technical directions, one of which is contact friction. The brush contact is used to contact and slide on the resistance film, and the resistance value signal (or voltage signal) changes with the change of the brush contact position through the contact between the brush contact and the resistance film and the change of the sliding position. The second type of direction is non-contact type. It uses magnetic sensitive elements (such as Hall elements) and magnetic materials (such as permanent magnets). Magnetic sensitive components such as Hall elements are used to sense the change of the...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a contact non-friction resistance plate and its supporting parts through a special multi-layer structure design, different functional layers using materials with different characteristics, and a special manufacturing method, so as to effectively solve the existing contact problem. The service life of the friction sensor is short, and the output voltage accuracy of the non-contact magnetic sensor sensor is affected by the problem of anti-electromagnetic interference.

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