CN202033409U

CN202033409U - Safe multipurpose electroprobe

Info

Publication number: CN202033409U
Application number: CN2011201446346U
Authority: CN
Inventors: 冉顺才
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-10
Filing date: 2011-05-10
Publication date: 2011-11-09
Anticipated expiration: 2021-05-10

Abstract

The utility model discloses a safe multipurpose electroprobe, which comprises a pen tube, a detecting circuit which is formed by sequentially connecting a metal conductor, a high resistor, a neon tube and a hand-touch electrode, and a touch head which is connected with the metal conductor, and the safe multipurpose electroprobe is characterized in that: a sound-producing device is arranged between the neon tube and the hand touch electrode in serial connection. The safe multipurpose electroprobe has beneficial effects that: when the electroprobe is used for examining whether an electric appliance is electrified, not only can the judgment be made through the neon pipe, but also the judgment can be made through the sound of a speaker; so the examination validity can be improved, and the safe multipurpose electroprobe is safer to use. Through two test loops, the reliability of the electroprobe is improved, the electroprobe is convenient for the user to operate, and the working efficiency can be improved.

Description

Safety multi-purpose way electroprobe

Technical field

The utility model relates to test pencil, is specifically related to a kind of safety multi-purpose way electroprobe.

Background technology

Test pencil is the instrument whether family and electrician's inspection electrical equipment commonly used has electricity, because the test pencil neon tube is luminous more weak, use test pencil in the place that light is strong, it is wrong sometimes that to think that neon tube does not have luminous, thereby wrong judgement test pencil institute electricity measurer is not charged, causes taking place electric shock accidents easily.Existing test pencil, neon tube damages can not be luminous, and this just can't check whether electrical equipment is charged, and reason is to have only a test loop.

Summary of the invention

The utility model is at the prior art above shortcomings, and the problem that solve is: provide a kind of can sounding, the test pencil of two test loops.

The utility model is for solving the problem that above-mentioned prior art exists, be achieved by the following technical solution: a kind of safety multi-purpose way electroprobe, comprise the shaft of a writing brush, by metallic conductor, high resistance, neon tube, the sequently connected detection of hand touched electrode loop, and the touching head that is connected with metallic conductor, its improvement is: be serially connected with sound-producing device between neon tube and hand touched electrode.

Further, described detection loop is provided with change-over switch between metallic conductor and high resistance; Change-over switch is connected with a standby high resistance, and standby high resistance is connected in series with standby neon tube, and standby neon tube is connected with sound-producing device.

Further, touching head and hand touched electrode are separately positioned on the two ends of the shaft of a writing brush, and the shaft of a writing brush surface near the hand touched electrode axially is provided with a plurality of jacks along electroprobe.

Further, an end of described touching head is taper, straight screwdriver or Phillips screwdriver, and a touching other end is threaded with the shaft of a writing brush.

The utility model compared with prior art, beneficial effect is: this electroprobe checks whether electrical equipment charged, not only by the luminous judgement of neon tube, can also judge by sound horn, has improved the validity of checking, uses safer.By two test loops are set, improved the reliability of electroprobe, make things convenient for user's operation, increase work efficiency.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a schematic block circuit diagram of the present utility model;

Fig. 3 is the circuit diagram of sound-producing device.

Wherein: metallic conductor 1, high resistance 2, neon tube 3, hand touched electrode 4, touching 5, sound-producing device 6, change-over switch 7, standby high resistance 8, standby neon tube 9, jack 10, triode VT1, triode VT2, loudspeaker BL, capacitor C.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

See Fig. 1-shown in Figure 3, a kind of safety multi-purpose way electroprobe comprises the shaft of a writing brush, by metallic conductor 1, high resistance 2, neon tube 3, hand touched electrode 4 sequently connected detection loops, and the touching that is connected with metallic conductor 15, between neon tube 3 and hand touched electrode 4, be serially connected with sound-producing device 6.

Sound-producing device 6 comprises triode VT1, triode VT2, battery, loudspeaker and capacitor C, and triode VT1 adopts the NPN type, and triode VT2 adopts positive-negative-positive, and loudspeaker BL adopts the HC-1 type, and 8 ohm of resistance, battery are the 1.5V button cell.The emitter of triode VT2 is connected with hand touched electrode 4, and the base stage of triode VT1 is connected with neon tube 3.Triode VT1 base stage is unsettled and be in cut-off state at ordinary times, and loudspeaker BL only has weak current, not sounding; When electroprobe checked that electrical equipment is whether charged, people's forefinger contact with hand touched electrode 4, touching 5 a contact phase line, and triode VT1 acquisition bias current work, capacitor C plays retroactive effect, and then loudspeaker BL sounds, and while neon tube 3 also can be luminous.Therefore, neon tube 3 luminous, while loudspeaker BL sounding, just explanation is charged by electricity measurer.

In order to improve the electroprobe reliability, between metallic conductor 1 that detects the loop and high resistance 2, be provided with change-over switch 7, change-over switch 7 is connected with a standby high resistance 8, and standby high resistance 8 is connected in series with standby neon tube 9, and standby neon tube 9 is connected with sound-producing device 6.Metallic conductor 1, standby high resistance 8, standby neon tube 9, sound-producing device 6 and hand touched electrode 4 form the redundant detection loop like this, detect between loop and the redundant detection loop and switch by change-over switch 7.During use,, can select one in two test loops to test, actually be equivalent to two electroprobes by changing the position of the switch of change-over switch 7.

The shaft of a writing brush of electroprobe is used the ABS engineering plastics as insulation crust, and touching 5 and hand touched electrode 4 are separately positioned on the two ends of the shaft of a writing brush, and the shaft of a writing brush surface near hand touched electrode 4 axially is provided with a plurality of jacks 10 along electroprobe.Take removably to be connected between touching 5 and the shaft of a writing brush, an end of touching 5 is taper, straight screwdriver or Phillips screwdriver, touches 5 other end and is threaded with the shaft of a writing brush.Touching in specie 5, can place the set jack of insulation crust tail end 10 when not using.

During use, thumb and middle finger are held insulation crust, and forefinger is pressed on the hand touched electrode 4.By the test position of electricity measurer, can't hand touch touching 5 with touching 5 contacts.For safer, the bar portion of touching 5 can set up insulation sleeve.

The utility model checks whether electrical equipment is charged, not only by the luminous judgement of neon tube, can also judge by sound horn, has improved the validity of checking, uses safer.By two test loops are set, improved the reliability of electroprobe, make things convenient for user's operation, increase work efficiency.

Claims

1. safety multi-purpose way electroprobe, comprise the shaft of a writing brush, by metallic conductor (1), high resistance (2), neon tube (3), the sequently connected detection of hand touched electrode (4) loop, and the touching head (5) that is connected with metallic conductor (1), it is characterized in that: between neon tube (3) and hand touched electrode (4), be serially connected with sound-producing device (6).

2. safety multi-purpose as claimed in claim 1 way electroprobe, it is characterized in that: described detection loop is provided with change-over switch (7) between metallic conductor (1) and high resistance (2); Change-over switch (7) is connected with a standby high resistance (8), and standby high resistance (8) is connected in series with standby neon tube (9), and standby neon tube (9) is connected with sound-producing device (6).

3. safety multi-purpose as claimed in claim 1 way electroprobe, it is characterized in that: touching head (5) and hand touched electrode (4) are separately positioned on the two ends of the shaft of a writing brush, and the shaft of a writing brush surface near hand touched electrode (4) axially is provided with a plurality of jacks (10) along electroprobe.

4. safety multi-purpose as claimed in claim 3 way electroprobe, it is characterized in that: an end of described touching head (5) is taper, straight screwdriver or Phillips screwdriver, touching head (5) other end is threaded with the shaft of a writing brush.