Double-boundary electric contact indicator

Abstract

The invention discloses a dual-boundary electric contact indicator which comprises a common indicator. The shell of the common indicator is fixedly provided with a dual-boundary electric contact display consisting of an appliance encloser, an upper and a lower tolerance set point stations which are respectively arranged at the upper and the lower parts of the lumen of the encloser, an indicating circuit board, an indicating lamp, a built-in power supply and a contact part which is arranged at the upper end of a measuring rod of the indicator and is arranged between the upper and the lower tolerance set point stations; the upper tolerance set point station, the lower tolerance set point station, the contact part and the indicating lamp are respectively connected with the power supply by the indicating circuit board. The invention has the advantages that the indicator has simple structure, small volume and portability; the indicating lamp is arranged on the electric appliance encloser, can directly display whether a detected part is qualified or not and can also display that a unqualified part exceeds the upper tolerance or the lower tolerance; and the built-in power supply is arranged, so that the indicator can work independently at any time.

Description

technical field [0001] The invention belongs to a measuring instrument, in particular to an electric contact indicating meter, in particular to a double-interface electric contact indicating meter. Background technique [0002] The tolerance indication of the known ordinary mechanical indicator is to rely on the tolerance indicator that can slide on the bezel to set the tolerance range. When measuring, rely on the naked eye to observe the swing of the pointer of the indicator within the specified tolerance range to judge whether the part is qualified . Since there is a certain distance between the tolerance indicator and the dial, the angle error of reading the meter is unavoidable, and human eye fatigue will also cause errors, resulting in large errors in judging parts. Therefore, ordinary mechanical indicators are not suitable for large Flow inspection of batch parts. At present, there is an electric contact indicator, which is composed of an ordinary indicator, an elect...

AI Technical Summary

Problems solved by technology

Although this indicator overcomes the shortcomings of ordinary mechanical indicators, its sensor is a complex lever structure, the main parts are poorly crafted, and the tolerance discriminator is composed of complex electrical appliances. The two indicator meters are still separated, so the overall structure of the indicator meter is complex, bulky, poor in mobility, and inconvenient to adjust, proofread and monitor

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