CN2032927U

CN2032927U - Plug-in type combined screw precession tool

Info

Publication number: CN2032927U
Application number: CN 88204602
Authority: CN
Inventors: 汪莉; 汪华
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-01
Filing date: 1988-04-01
Publication date: 1989-02-22

Abstract

The utility model relates to a plug-in type combined screwdriver which is a screwdriver used by electricians. The upper part of a driving rod of the screwdriver is rectangular or polygonal and is matched with the hole-shaped dimension of the front end of an insulated handle. The driving rod is inserted and sucked by a permanent magnet steel block which is embedded in the handle. Thereby, the plug-in type combined screwdriver has the advantages of convenient replacement of insertion and pull and large transferring torsion. A permanent magnet sleeve barrel is additionally and fixedly sheathed on the front end of the driving rod to suck screws and automatically position slotted head screws. A current tester is also arranged on the handle. The utility model has the advantages of simple structure, easy fabrication and convenient operation.

Description

Plug-in type combined screw precession tool

The present invention relates to a kind of electricians screw driver.

Existing commercially available combined type screw rotating tool; Constitute by swing arm, chuck and insulated handle.Generally be equipped with in the insulated handle axle center and survey the electric test part, the swing arm head generally increases hardness through heat treatment.The swing arm afterbody has two or many direct-axis to convex tendon, is used for transmitting torsional moment, and it links to each other with the metal chuck of insulated handle head.This metal chuck is one section metal tube, and tube wall is with screw thread outward, and direct-axis as swing arm mounting or dismounting rising fastening deformation and transmission torsional moment usefulness, relies on pipe outer nut locking swing arm to having some grooves.

This tool that revolves, metal nuts expose at the handle front end, easily bump finger in the use, bring the danger of electric shock, dangerous, thus the metal chuck is done small-sizedly, generally in actual use all takes the lead in damaging and causes a complete set to revolve tool scrapping because of the metal chuck bears incessantly torsional moment.Simultaneously, this revolving when tool is changed swing arm wanted twice nut of degree of tightness, and the effect of swing arm is single, only transmits torsional moment.On wall or shingle when making progress operation, normal drop screw.Also can make swing arm skid off flat recess to the in-line screw.So use inconvenient.

In view of the problem that above-mentioned prior art exists, task of the present invention is that a kind of bar convenience of changing of proposition is rapid, and antitorque moment is big, has the plug-in combined screwdriver that holds screw device.

The technical solution of task of the present invention is: adopting top is rectangle or polygon, the bottom is cylindrical swing arm, swing arm reaches the shank portion shaft still for cylindrical, inserting handle portion is rectangle or polygon, the metal chuck that cooperates swing arm rectangle or polygon cross-sectional area is arranged in the insulated handle, and an endoporus is arranged at chuck top is the rectangle or the polygonal permanent magnetism collar, and swing arm inserts handle, promptly hold, be unlikely and come off handle by the permanent magnetism collar.When needs are changed swing arm, pull out promptly with hand-power one.

Surveying the electric test part in the handle still is installed on handle center's axle.All swing arm tops all can put the permanent magnetism sleeve.

Because the present invention inserts swing arm in rectangle or the polygonal metal clip sleeve, insert swing arm and promptly held, needn't come mechanical fasteners with nut by permanent magnet ring, so, the metal clip sleeve in the handle and the torsional moment transmission of swing arm are improved significantly, change and use very convenient firmly durable.

Revolve on the tool and still can join the permanent magnetism sleeve, like this when operation if swing arm on put, just can prevent the screw drop, the screw slots of running into in-line also can not cause the swing arm head to skid off.

The present invention is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is integrally-built cutaway view.

Plug-in combined screwdriver with reference to Fig. 1.Have in handle 1 inside the rectangle of an endoporus or polygonal metal clip set upper side and permanent magnetism bloom 4 near, the rectangle of metallic sheath or polygon endoporus match with the rectangle or the polygon upper end of swing arm 2.Electric tester still can be installed in the Handle axis center, and (8 is insulator among the figure, and 7 is neon tube, and 6 is spring, and 5 is the screw cap.

The permanent magnetism sleeve is made up of lining 9 and permanent-magnet steel nut 10 and permanent magnetism cover 11, lining is made by the iron and steel metal, there is screw thread the upper end and has axially to rise closes groove, when screwing, the permanent-magnet steel nut lining can be fastened on the swing arm 2, the permanent magnetism cover can be free to slide in the lining periphery, owing to produce magnetic thrust between permanent-magnet steel nut and the permanent magnetism cover, the permanent magnetism cover always places the lining least significant end, when revolving tool work, permanent magnetism cover then plays a part elastic force, iron screw can be placed the swing arm top before revolving tool and need operating, and dependence permanent magnetism cover holds or when screw screws out, the permanent magnetism cover also can hold screw, can not make the screw drop on the ground.

The present invention can be applicable to various composite electricians and revolves on the special-purpose instrument that also can be applicable to various mechanical electric equipment and instruments on the tool.

Claims

1, a kind of plug-in combined screwdriver, setting-in metal chuck [3] and permanent magnetism bloom [4] in insulated handle [1], it is characterized in that metal chuck [3] has rectangle or polygonal endoporus is connected with permanent magnetism bloom [4] with top.Endoporus matches with swing arm [2].The swing arm top can be equipped with permanent magnetism sleeve [9,10,11].

2, plug-in combined screwdriver according to claim 1 is characterized in that said swing arm (2) is that rectangle or polygon bottom are formed by Cylinder by top.The size dimension of cuboid matches with the interior hole dimension of the rectangle of metal chuck (3).

3, plug-in combined screwdriver according to claim 1 is characterized in that said permanent magnetism sleeve (9,10,11), is made up of metal lining (9) and permanent magnetism nut (10) and permanent magnetism cover (11).