Telescopic multimeter pen head

Abstract

The invention discloses a telescopic multimeter pen head. The telescopic multimeter pen head comprises a connecting part, a detection head and a connecting line; the connecting part comprises a connecting pipe, long grooves uniformly distributed on the outer wall of the connecting pipe, a thread which is arranged on the outer wall of the connecting pipe and a fastening nut connected with the thread of the connecting pipe; the detection head comprises a detection cylinder, a probe fixed to one end of the detection cylinder, a hole which is formed in the other end of the detection cylinder, a connecting thread A which is arranged on the inner wall of the hole and a connecting thread B which is arranged on the outer wall of the detection cylinder; the connecting line comprises a wire, a connecting head fixed to one end of the wire, a connecting thread C arranged on the outer wall of the connecting head and a protecting layer; the protecting layer comprises a first insulating layer covering the wire, a stainless steel wire net covering the first insulating layer, a second insulating layer covering the stainless steel wire net and an outer protecting layer covering the second insulatinglayer.

Description

technical field [0001] The invention relates to the field of electric power detection tools, in particular to a retractable multimeter tip. Background technique [0002] In recent years, with the increasing number of newly built substations, the daily workload has also gradually increased. In some tasks, it is necessary to use a multimeter for measurement work, such as regular measurement of battery voltage and other substation daily maintenance work. Due to the existing multimeter pen contact Short, the distance between the terminals that need to be measured is not enough in the actual measurement work, and the problem of equipment installation will also cause some terminals to be relatively close to the inside of the equipment, and the terminals cannot be reached during the measurement. Forced measurement may cause people to touch the terminals by mistake, causing equipment Major safety accidents such as short circuit, tripping, and electric shock to testing personnel. ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the increasing number of newly built substations, the daily workload has also gradually increased. In some tasks, it is necessary to use a multimeter for measurement work, such as regular measurement of battery voltage and other substation daily maintenance work. Due to the existing multimeter pen contact Short, the distance between the terminals that need to be measured is not enough in the actual measurement work, and the problem of equipment installation will also cause some terminals to be relatively close to the inside of the equipment, and the terminals cannot be reached during the measurement. Forced measurement may cause people to touch the terminals by mistake, causing equipment Major safety accidents such as short circuit, tripping, and electric shock to testing personnel

[0003] In the past work, due to the short contact of the multimeter pen, the method of adding wires is generally used for measurement. This method is to directly wind the wires on the contacts of the multimeter. Since the wires are relatively soft and easy to bend, the terminals between the terminal blocks are compared. The dense relative distance is very short, and it is very easy to accidentally touch other terminals and wires, which not only makes the measurement inconvenient, but also brings unsafe factors to the safe operation of the equipment

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