Fixing frame structure for mounting weighing sensor

Abstract

The invention relates to a fixing frame structure for mounting a weighing sensor. A battery compartment base is arranged outside a wall plate of one side of a fixing frame, and a limiting notch is formed in the outer wall of the battery compartment base. A top plate is provided with a mounting face and a limiting seat, an inner baffle connected with the top plate is arranged on one corner of the wall plate, and the inner baffle, the top plate and the wall plate form an independent demarcating mounting cavity. A processing circuit printed board with a demarcating switch is mounted in the mounting cavity, and a lead sealing cover plate is mounted on the opening of the demarcating mounting cavity through fasteners. An inner separating plate connected to the top plate and the wall plate divides the cavity into an independent mainboard mounting cavity and an independent power board mounting cavity, a control circuit printed board is mounted in the mainboard mounting cavity, an annular table face is arranged in the power board mounting cavity, and a power source circuit printed board is mounted on the annular table face. A bottom cover plate is mounted in the mounting hole of the wall plate through fasteners. The fixing frame structure for mounting the weighing sensor is reasonable in structure, overhaul can be carried out on a scale body and other parts without opening lead sealing, and the effect of insect prevention of the power source can be achieved.

Description

technical field [0001] The invention relates to a fixed frame structure for installing weighing sensors, which belongs to the technical field of electronic weighing instruments. Background technique [0002] The weighing of the electronic scale is to receive the load through the load cell, and the elastic body is deformed by force, so that the resistance strain gauge pasted on the elastic body is also deformed at the same time, causing the resistance value of the resistance strain gauge to change, and the weight signal is converted through the measurement circuit The corresponding analog electrical signal is output to the signal processing device, the signal processing circuit receives the signal and performs analog-to-digital conversion, and then provides a control circuit and a storage circuit through the cable to realize data transmission and display. Changes in component parameters on the A / D conversion processing circuit that converts analog electrical signals into digi...

AI Technical Summary

Problems solved by technology

However, most of the maintenance of electronic scales is not for the maintenance of processing circuits and load cells, so it will cause unnecessary work increase, re-measurement costs and waste of time

[0003] At present, the installation positions of the internal control circuit printed board, power circuit printed board and processing circuit printed board of the electronic scale are not ideal, resulting in relatively messy internal circuit wiring, which is not conducive to the detection of line EMC and the control of electrical costs, especially The components on the printed circuit board of the power supply are set up, and when the power supply is working, it will generate a suitable temperature, which makes cockroaches and other insects prefer to live in the scale. Often, the insects or their excrement touch the high-voltage part inside the power supply, causing Switching power supply partial short circuit and other damage

Although some current insect-proof mechanisms for power supplies mostly seal the power supply itself by adding a sealing mechanism to achieve the insect-proof effect, this insect-proof structure is relatively complicated and is not conducive to heat dissipation of the power supply, so it increases the production and maintenance costs, and also reduces the power supply. service life

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