CN2229086Y - Multifunctional test pencil - Google Patents

Abstract

The utility model relates to an electricity testing pencil. The utility model relates to a tool for an electrician, which collects wire checking, electricity testing, and miniature electric torch three functions into one body. Series circuits which are composed of a switch, a bulb and a battery are increased on the foundation of the original electricity testing pencil structure which is composed of a pencil tube, a testing contact head, a current-limiting resistor, a neon tube, a spring, and a hand-contact electrode. The hand-contact electrode is connected with a wire clamp. The switch is designed into a screw hat type structure which is compose of a pencil cap, a lamp holder card, and an electric conduction steel sheet. The rotary pencil cap causes the lamp holder card and the electric conduction steel sheet to contact or separate. The bulb and the battery are switched in or cut off. The utility model has the advantages of novel structure, and simple structure. The utility model has three purposes by one object. The utility model is the practical tool for the electrician.

Description

Multi-functional test pencil

The utility model relates to a kind of electrical measurement and marking tools, says so to more true merit to relate to a kind of test pencil.

Test pencil is one of indispensable instrument of electrician, the common test pencil of Chu Shouing mainly is made of test contact, current-limiting resistance, neon tube, metal spring and hand touched electrode serial connection on the market, when test contact contact electrification metallic object, anthropolith contact with the hand touched electrode, the neon tube starter, the expression metallic object is charged.When the live metal body is arranged in dark or more hidden environment, also need flash a torch or use other lightings during the examination electricity, extremely not convenient.In addition, wiring also is one of the work that often will do of electrician, need after the wiring school line with judge line accurately whether, method commonly used is to measure or check with homemade instrument with multimeter, the use inconvenience also influences work efficiency.

The purpose of this utility model is a kind of multi-functional test pencil of design, is a kind of three use test pencil, i.e. collection examination electricity, school line and the three kinds of functions of throwing light on are the whole body, satisfying the needs of electrician's routine work, and easy to carry and use.

Multi-functional test pencil of the present utility model comprises the shaft of a writing brush and the test contact, current-limiting resistance, neon tube, metal spring and the hand touched electrode that are connected in series, it is characterized in that:

Comprise that also a series circuit that is made of switch, bulb, battery is attempted by between the tie point of the tie point of test contact and current-limiting resistance and metal spring and hand touched electrode;

Described hand touched electrode connects a wire clamp.

Described switch is the turncap formula switch that is made of the cap for brush, lamp socket card and conduction steel disc, and the described cap for brush is the fimbriatum of band central through hole, and its shank is pressed and put in the shaft of a writing brush of top; Described bulb places in the cap for brush central through hole; Described lamp socket card is the circle ring of a band elastic metallic pawl, and circle ring set hoop is on tube face, and elastic metallic pawl and cap for brush central through hole wall offset, and its end is the contact pen inside pipe wall also; Described conduction steel disc is elongated, places in the shaft of a writing brush, is connected from shaft of a writing brush top along the extension downwards of shaft of a writing brush inwall and with the tie point of described test contact and current-limiting resistance.

Be used as the test pencil time spent, the conduction steel disc that the rotation cap for brush leaves in the shaft of a writing brush lamp socket card is promptly opened switch, this three usefulness test pencil is a common pencil test structure, is a circuit that is made of test contact, current-limiting resistance, neon tube, spring, the series connection of hand touched electrode.

Be used as the miniature electric torch time spent, the rotation cap for brush contacts the interior conduction steel disc of the lamp socket card and the shaft of a writing brush, and will clamp test contact as the wire clamp of hand touched electrode, and forming the loop that constitutes by test contact, conduction steel disc, lamp socket card, bulb, battery, wire clamp series connection, bulb is lighted.

Be used as the school line time spent, the rotation cap for brush contacts the interior conduction steel disc of the lamp socket card and the shaft of a writing brush, wire clamp is clamped lead one end to be measured, with the test contact contact measured lead other end,, then form the loop that constitutes by test contact, conduction steel disc, lamp socket card, bulb, battery, wire clamp, lead to be measured series connection if wiring is accurate, bulb is lighted, if wiring is inaccurate, above-mentioned loop is obstructed, and bulb does not work.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing

The multi-functional test pencil electrical schematic diagram of Fig. 1;

The multi-functional test pencil contour structures of Fig. 2 synoptic diagram;

The multi-functional pencil test structure cross-sectional schematic of Fig. 3.

Referring to Fig. 1,11 for test contact, K are switch among the figure, and its position 1 is school line or miniature torch state, and its position 2 is the examination electricity condition.12 is bulb (small electric bulb), and 13 is battery, and 14 is spring, and 15 is neon tube, and 16 is current-limiting resistance, 17 for the hand touched electrode be wire clamp.

When K is in position 1, can makes school the Line tool or make miniature torch, bulb was bright when test contact 11 directly was connected with wire clamp 17; Test contact 11 is connected by treating the school lead with wire clamp 17, can judge whether lead connects accurately according to the bulb state.

When K is in position 2, can make test pencil, test contact 11 contacts with charged object, human body contact clip 17, neon tube 15 starters.

Referring to Fig. 2,21 is the rotatable cap for brush among the figure, and 22 is the shaft of a writing brush, and 11 is test contact, with corresponding position, neon tube position view window 221 is arranged on the shaft of a writing brush 22, can mark arrow on the cap for brush 21 and be used to indicate school line position or examination electric position.The cap for brush 21, the shaft of a writing brush 22 can be made of rigid plastic, and multi-functional test pencil profile is substantially with common test pencil shown in the figure.

Referring to Fig. 3, be the cap for brush 21, bulb 12 from top to bottom among the figure, battery 13, spring 14, neon tube 15, current-limiting resistance 16 and test contact 11 have hole 222 on the shaft of a writing brush 22 perisporiums, for drawing the wire clamp 17 (hand touched electrode) that an end is connected with spring 14.Strip conduction steel disc 31 is close to the inwall setting of the shaft of a writing brush 22, extends downwards from the shaft of a writing brush 22 tops to be connected with test contact 11 with current-limiting resistance 16.The umbrella shape cap for brush 21 has stepped central through hole 211, for holding bulb 12.The shank of the cap for brush 21 is pressed and is put location in the shaft of a writing brush 22, be with lamp socket card 32 on the tube face, the elastic metallic pawl 321 of lamp socket card 32 offsets with central through hole 211 sidewalls of the cap for brush and fixes bulb, metal claw 321 ends also contact with the shaft of a writing brush 22 inwalls, the rotation cap for brush 21 can make the contact of lamp socket card metal claw 321 ends or break away from conduction steel disc 31, realizes turncap formula on-off action.

The utility model novel structure is simple, and a thing three usefulness are utilities of electrician and family maintenance.

Claims (2)

1, a kind of multi-functional test pencil comprises the shaft of a writing brush and the test contact, current-limiting resistance, neon tube, metal spring and the hand touched electrode that are connected in series, it is characterized in that:

Comprise that also a series circuit that is made of switch, bulb, battery is attempted by between the tie point of the tie point of test contact and current-limiting resistance and metal spring and hand touched electrode;

Described hand touched electrode connects a wire clamp.

2, multi-functional test pencil according to claim 1 is characterized in that:

Described switch is the turncap formula switch that is made of the cap for brush, lamp socket card and conduction steel disc, and the described cap for brush is the fimbriatum of band central through hole, and its shank is pressed and put in the shaft of a writing brush of top; Described bulb places in the cap for brush central through hole; Described lamp socket card is the circle ring of a band elastic metallic pawl, and circle ring set hoop is on tube face, and elastic metallic pawl and cap for brush central through hole wall offset, and its end is the contact pen inside pipe wall also; Described conduction steel disc is elongated, places in the shaft of a writing brush, is connected from shaft of a writing brush top along the extension downwards of shaft of a writing brush inwall and with the tie point of described test contact and current-limiting resistance.

Images