Weighing sensor assembly and electronic balance

Abstract

The invention provides a weighing sensor assembly, which comprises a force receiving portion, a weighing unit, a force transmitting member and a stop portion. The weighing unit comprises a movable portion, a fixed portion, and a parallel guide assembly which connects the movable portion and the fixed portion. The force transmitting member comprises a first installing portion used for installing the force receiving portion, a second installing portion used for being installed to the movable portion, and a parallel guide connecting assembly which connects the first installing portion and the second installing portion. The first installing portion can move upwards and downwards parallelly in a vertical direction relative to the second installing portion under the action of a loading force. The force transmitting member is of an integral structure. The stop portion is used for preventing the first installing portion of the force transmitting member from further moving downwards during overload, so as to achieve the overload protection effect. The invention further provides an electronic balance comprising the weighing sensor assembly. The weighing sensor assembly and the electronic balance provided by the invention are simple in structure and easy to install, and can realize the function of preventing overload.

Description

technical field [0001] The invention relates to a weighing sensor assembly and an electronic balance, in particular to an overload-proof weighing sensor assembly and an electronic balance. Background technique [0002] In the prior art, during use and transportation, if there is no overload protection or the overload protection function is not perfect, the electronic balance is easily damaged by static or dynamic impact force. Common imperfect overload protection functions mainly include: the overload force difference between eccentric load overload and center overload can lead to protection failure and damage the balance; the overload protection structure of many load cells is made on the balance shell cover, for a single When the load cell is transported, it does not play the role of overload protection. The patent announcement No. US4574898 discloses an electronic balance with an overload protection structure on the casing. By installing a stopper around the balance, the ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, during the use and transportation of electronic balances, if there is no overload protection or the overload protection function is not perfect, it is easy to be damaged by static or dynamic impact force.

Common imperfect overload protection functions mainly include: the overload force difference between eccentric overload and central overload can lead to protection failure and damage the balance; the overload protection structure of many load cells is made on the balance shell cover, for a single When the load cell is transported, it does not play the role of overload protection. The patent announcement No. US4574898 discloses an electronic balance with an overload protection structure on the shell. By installing a stopper around the balance, it can avoid damage to the balance due to overload. , but does not provide protection for the transport of individual sensors

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