An anti-interference electromagnetic metering instrument

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By using snap-fit components and a quick-release filter mechanism, the problem of cumbersome maintenance of existing anti-interference electromagnetic metering instruments is solved, enabling quick removal of the back cover and filter, thus improving the practicality and convenience of the equipment.

CN224518769UActive Publication Date: 2026-07-17JINING ZHONGZHI ELECTRONIC TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: JINING ZHONGZHI ELECTRONIC TECH CO LTD
Filing Date: 2025-06-25
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Existing anti-interference electromagnetic metering instruments require special tools to remove the back cover during maintenance, resulting in long maintenance times and affecting equipment availability and production efficiency.

Method used

It adopts a snap-fit assembly and a quick-release filter mechanism. The back cover can be quickly removed through the design of the snap block and rotating plate, and the filter can be quickly removed by the design of the sliding column and button, simplifying the maintenance process.

Benefits of technology

It enables quick disassembly of the back cover and filter screen, reducing maintenance and cleaning time, improving the practicality and convenience of the equipment, and reducing labor and downtime costs.

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Figure CN224518769U_ABST

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Abstract

This utility model relates to the field of metering instrument technology and discloses an anti-interference electromagnetic metering instrument, including a housing. An interface and a display screen are fixedly connected inside the housing. A base is fixedly connected to the bottom of the housing. A rear cover is slidably connected to the side wall of the housing. A fan is fixedly connected inside the rear cover. A clamping plate assembly is provided on the side wall of the rear cover, and a snap-fit assembly is provided on the side wall of the housing. The snap-fit assembly includes a slotted plate, the side wall of which is fixedly connected to the inside of the housing. A rotating plate is rotatably connected inside the slotted plate. In this utility model, pulling the rear cover causes the clamping block to slide, then the clamping block is disengaged from the inner wall of the rotating plate, and then the rotating plate rotates it to the inner wall of the slotted plate, achieving the effect of quick removal of the rear cover. This solves the problem that if the internal circuit or sensor of the instrument malfunctions, special tools are needed to remove the rear cover, extending maintenance time and affecting equipment usability, thus improving the practicality of the anti-interference electromagnetic metering instrument.

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