CN87204046U

CN87204046U - Folding electrician's knife with electricity test

Info

Publication number: CN87204046U
Application number: CN 87204046
Authority: CN
Inventors: 李常青
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-21
Filing date: 1987-03-21
Publication date: 1988-02-03

Abstract

The utility model provides a folding electrician knife with electricity test, which is mainly composed of a blade and an insulated knife handle, wherein a knife frame is embedded in the knife handle and makes a spring sheet and the blade fixed between two clamping plates by a rivet and a pin shaft, the tail end of the knife handle is provided with a cylinder-shaped cavity filled with objects such as a neon tube, etc., and an end cover of the hollow cavity is provided with a hand touching electrode. The blade of the electrician knife is used as a test contact terminal. The electrician knife can be used as a cutting tool and can test whether a metal body is energized or not. The utility model can work with electricity by bearing the voltage within 500 V.

Description

Folding electrician's knife with electricity test

Whether charged the utility model relates to a kind of electrician with the insulation cutter, particularly can test metallic object electrician's knife.

Chinese patent 85203884 discloses a kind of collapsible insulating electrician knife, and it mainly is made up of the knife rest in blade, insulation handle of a knife and the embedding insulation handle of a knife.Owing to adopted the insulation handle of a knife, can hot line job, but whether can not be used for testing metallic object charged; Existingly be used for testing metallic object whether charged test pencil mainly is composed in series by test contact, metal spring, current-limiting resistance, neon tube and hand touched electrode, its test contact can be made the shape of screwdriver.

The purpose of this utility model provides a kind of electric electrician's knife of collapsible examination that insulating electrician knife and test pencil are combined, and uses this insulating electrical cutter, can hot line job and the test metallic object whether charged.

The utility model technical solution is achieved in that electrician's knife is made up of blade, knife rest and insulation handle of a knife.Knife rest and insulation handle of a knife are injected at together, and the neon tube in the test pencil, metal spring, current-limiting resistance and hand touched electrode are contained in the insulation handle of a knife, and blade is as test contact.

Accompanying drawing is the sectional view of the electric electrician's knife of collapsible examination, now in conjunction with the accompanying drawings the utility model is made detailed description:

The electric electrician's knife of collapsible examination is made up of blade 1 and insulation handle of a knife 3.Be embedded with one in the handle of a knife 3 and latch plate 4 and blade 1 be fixed on knife rest in the two clamping plates 13 by rivet 10,11 and bearing pin 2, a projection 4a is arranged on the latch plate 4, blade 1 can rotate folding getting back on the handle of a knife 3 around bearing pin 2, and handle of a knife 3 adopts PS or PP plastic material with knife rest injection moulding.A hole 12 is respectively arranged on the two clamping plates 13, fill with plastics in the hole 12, the knife rest that embeds in the handle of a knife 3 is played fixation.The tail end of handle of a knife 3 has a columniform cavity, and an end of the close test contact blade 1 of cylindrical cavity communicates with the projection 4a on the latch plate 4.The other end of cylindrical cavity is processed screw thread.Neon tube 5, metal spring 6, current-limiting resistance 7 are housed in the cylindrical cavity, load onto the thread ending cover 8 of a band cylindrical hole then.End cap 8 adopts the time of its injection moulding, is embedded with the hand touched electrode 9 of a band in-line straight trough on the end cap 8, and hand touched electrode 9 is with end cap 8 injection mouldings, and hand touched electrode 9 communicates with cylindrical hole on the end cap 8.Neon tube 5 contacts with projection 4a on the latch plate 4, and neon tube 5, metal spring 6, current-limiting resistance 7 and hand touched electrode 9 are in series.The material and the job operation of its blade 1 of the electric electrician's knife of collapsible examination and knife rest are all the same with prior art.Insulation handle of a knife 3 can all adopt transparent PS or PP plastics to make, also can be with opaque PS or PP or ABS plastic injection moulding, but will on the cylindrical cavity of handle of a knife 3 tail ends, open a transparent window, and with observation neon tube starter whether.The insulation handle of a knife 3 withstand voltage in 500V.

The blade 1 of the electric electrician's knife of collapsible examination that the utility model provides is as test contact, and whether charged, can be used for cutting tool again if both can be used for testing metallic object, owing to adopted insulation handle of a knife 3, and can be at 500V voltage with interior livewire work.

Description of drawings:

1. blade 2. bearing pins 3. handle of a knifes 4. latch plate 4a projections 5. neon tubes 6. metal springs 7. current-limiting resistances 8. thread ending covers 9. hand touched electrode 10.11. rivets 12. holes 13. clamping plate

Claims

1, the electric electrician's knife of a kind of collapsible examination, it comprises a blade (1) and an insulation handle of a knife (3) made of plastic, be embedded with one in the handle of a knife (3) and latch plate (4) and blade (1) be fixed on knife rest in the middle of the two clamping plates (13), it is characterized in that tail end at handle of a knife (3) has designed a dress neon tube (5), metal spring (6), current-limiting resistance (7) and had the cylindrical cavity of the thread ending cover (8) of cylindrical hole by rivet (10), (11) and bearing pin (2); Neon tube (a 5) contacted projection (4a) interior with being contained in cylindrical cavity is arranged on the latch plate (4); End cap (8) has the hand touched electrode (9) of a band in-line straight trough.

2, the electric electrician's knife of collapsible examination as claimed in claim 1 is characterized in that handle of a knife (3) adopts transparent PS or PP injection-moulding plastic; Or adopt opaque PS or PP or ABS plastic injection moulding, have one on its cylindrical cavity and be used for observing the whether transparent window of starter of neon tube (5).