High-precision four-column sensor

By integrating the overall structure and digital module through one-piece machining, the problems of assembly gap and susceptibility to interference of analog signals in four-column load cells have been solved, realizing a load cell with high precision, long life and long-distance communication.

CN224398776UActive Publication Date: 2026-06-23HANGZHOU TAIYU IND & TRADE CO LTD
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Patent Information

Application Number
CN202521934989.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-09
Publication Date
2026-06-23
Estimated Expiration
2035-09-09

AI Technical Summary

Technical Problem

Existing four-column load cells suffer from problems such as decreased accuracy due to assembly gaps, shortened lifespan due to stress concentration, cumbersome assembly processes, and susceptibility to interference with analog signals.

Method used

It adopts an integral structure formed by one-piece machining, combined with digital modules and AD conversion technology to ensure no assembly gaps, enhance rigidity, directly output digital signals, enhance anti-interference ability, and convert the strain gauge resistance change into an electrical signal through Wheatstone bridge circuit.

Benefits of technology

It improves measurement accuracy and anti-interference capability, extends sensor life, simplifies assembly process, and enables high-resolution digital signal output and long-distance communication.

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Abstract

A high-precision four-column sensor relates to the technical field of weighing sensors and comprises a pressure head, a steel ball, an upper weighing seat, an elastic body, a lower weighing seat and a bottom plate in sequence from top to bottom, the steel ball is located between the pressure head and the upper weighing seat, and the contact surfaces of the pressure head and the upper weighing seat with the steel ball are concave arc surfaces. The elastomers are located between the upper weighing seat and the lower weighing seat, the elastomers, the upper weighing seat and the lower weighing seat are integrally processed and formed, the number of the elastomers is four, the elastomers are uniformly distributed in a 2 * 2 matrix, strain gauges are pasted on the elastomers, a groove is formed in the top surface of the lower weighing seat, the groove is located among the four elastomers, and a digital module is arranged in the groove. And one side of the lower weighing seat is provided with a signal line. The sensor adopts an integral structure which is integrally processed and formed, no assembly clearance exists, the precision is ensured by processing, the integral structure does not have stress weak points, the rigidity is obviously improved, and the service life of the sensor is long.
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