CN2195765Y

CN2195765Y - Line testing apparatus

Info

Publication number: CN2195765Y
Application number: CN 94236862
Authority: CN
Inventors: 苏中保
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-16
Filing date: 1994-07-16
Publication date: 1995-04-26
Anticipated expiration: 2004-07-16

Abstract

The utility model discloses a line testing device, composed of an electricity testing pencil and a testing pencil or two testing pencils. The electricity testing pencil and the testing pencil or two testing pencils are connected through conducting wires in the middle. A testing contact head of the electricity testing pencil and the testing probe head end of the testing pencil form a needle shape. The utility model has the advantages of convenient operation, and low cost. The utility model is safe. The utility model can test the make-and-break of the fire wire and the zero wire. The utility model is an ideal tool for testing lines.

Description

Line testing apparatus

The utility model relates to a kind of pick-up unit, particularly a kind of device of detection line break-make.

Electrician's detection line break-make generally adopts test pencil now, it is by test contact, current-limiting resistance, neon tube, metal spring and hand touched electrode are composed in series, test contact contacts with the live metal body, when people's part contacts with the hand touched electrode, neon tube starter in the test pencil, represent that then this metallic object is charged, break-make with this test pencil measurement circuit, need insulation course strip off with circuit, it is very inconvenient to operate, and with after the insulation course strip off, exposed metal wire is also dangerous, and the position of broken string is difficult accurately to be judged, sometimes a circuit needs strip off much local, results in hand cramps to people, and present in addition test pencil can only be judged the break-make of live wire, as judging the break-make of zero line, it is just powerless.

The purpose of this utility model promptly is to overcome the shortcoming of prior art, and line detection apparatus a kind of simple in structure, with low cost is provided.Use it not need the outer insulation course of strip off circuit, just can accurately judge the break-make of circuit, and it can judge the break-make of live wire, can judge the break-make of zero line again.

The purpose of this utility model is achieved through the following technical solutions: line detection apparatus is made up of test pencil and test pen, they link to each other by lead, also can form by two test pens, these two test pens also link to each other by lead, test pencil is by plastic casing, test contact, current-limiting resistance, neon tube and hand touched electrode are formed, test pen is by insulation crust, detection probe, pilot lamp is formed, when pick-up unit is made up of test pencil and test pen, lead one end between test pencil and the test pen is connected on the test contact of test pencil, the other end links to each other with the detection probe of test pen by the pilot lamp of test pen, when pick-up unit is made up of two test pens, lead one end between them is connected on the pilot lamp of another test pen, connect the detection probe of another test pen at last, the detection probe end of the test contact of test pencil and test pen is needle-like.

Fig. 1 is the sectional view of line detection apparatus

Fig. 2 is the circuit diagram of line detection apparatus

As shown in Figure 1, line detection apparatus comprises test pencil 1 and test pen 2, links to each other by lead 3 between them.Test pencil 1 is made up of plastic casing 4, test contact 5, current-limiting resistance 6, neon tube 7 and hand electric shock electrode 8; Test pen 2 is made up of insulation crust 9, detection probe 10, pilot lamp 11, one end of lead 3 is connected with the part that test pencil test contact 5 is positioned at plastic casing 4, up along plastic casing again, lead passes from a side on test pencil top, pass the pilot lamp 11 of test pen 2 again, along insulation crust 9 descending linking to each other with the detection probe of test pen at last.Detection probe 10 ends of the test contact 5 of test pencil and test pen are needle-like, be convenient to insert in the insulation course of circuit, the test contact 5 of the detection probe 10 of test pen and test pencil is contacted with plain conductor in the insulation course, and the circuit diagram of line detection apparatus as shown in Figure 2.During use, test pencil 1 is inserted in the insulation of circuit, and luminous as neon tube 7, then this line is a live wire, then test pen 2 is inserted on another line, pilot lamp 11 as the test pen top is also luminous, proves that the live wire at this place, zero line are path, and is not luminous as pilot lamp 11, prove that this place's zero line is out of order, need maintenance, not luminous as the test pencil neon tube, this place's live wire has fault at first certainly.

This pick-up unit also can be made up of two test pens, they also link to each other by lead, lead one end between them is connected on the detection probe of a test pen, be connected in by pilot lamp on the pilot lamp of another test pen, connect the detection probe of another test pen at last, during use, two test pens respectively connect single line road (live wire or zero line), pilot lamp as two pens is all luminous, then zero line, the equal non-fault of live wire as wherein one-pen is not luminous, prove the circuit broken string at this place, all not luminous as two pens, then the live wire ground wire all has fault.

Can find out by top narration, the utlity model has following excellent Point: safety easy to use, accuracy of judgement, simple in structure, with low cost, the break-make that can judge live wire, can judge again the break-make of zero line, be the comparatively ideal instrument of detection line.

Claims

1, a kind of line detection apparatus, form by test pencil (1) and test pen (2), they link to each other by lead (3), also can form by two test pens, these two test pens also link to each other by lead, test pencil (1) is by plastic casing (4), test contact (5), current-limiting resistance (6), neon tube (7) and hand touched electrode (8) are formed, it is characterized in that: test pen (2) is by insulation crust (9), detection probe (10), pilot lamp (11) is formed, when pick-up unit is made up of test pencil and test pen, lead (3) one ends between test pencil (1) and the test pen (2) are connected on the test contact (5) of test pencil, and the other end links to each other with the detection probe (10) of test pen by the pilot lamp (11) of test pen (2); When pick-up unit was made up of two test pens, lead one end between them was connected on the detection probe of a test pen, is connected in by pilot lamp on the pilot lamp of another test pen, connects the detection probe of another test pen at last; Detection probe (10) end of test contact of test pencil (5) and test pen is needle-like.

2, line detection apparatus according to claim 1 is characterized in that: the pilot lamp (11) of described test pen (2) is positioned at the top of test pen.

3, line detection apparatus according to claim 1, it is characterized in that: described test pencil (1) is connected with the part that test pencil (1) test contact (5) is positioned at plastic casing (4) with the part that lead (3) between the test pen (2) is positioned at test pencil, up along plastic casing again, lead passes from a side on test pencil top.

4, line detection apparatus according to claim 1 is characterized in that: it is descending along insulation crust (9) that the conductor part of described test pen (2) is passed pilot lamp (11), links to each other with detection probe.