CN2058874U - Foldable screwdriver - Google Patents

Abstract

The utility model relates to a foldable screwdriver belonging to hand tools. The screwdriver of current people using is unable to fold, and plug type screwdriver has the defects of many parts, complicated structure, high cost, etc. in the existing screwdriver. The utility model schemes out the foldable screwdriver which has the advantages of simple structure, low cost and easy use aiming at the foregoing defects. The handle of the foldable screwdriver is provided with a control button which is used for controlling switching-on and shutting down of the tool bit. The utility model which has the advantage of convenient use mainly applies to daily life and working of people, especially suitable for carrying about by the driver and repairer.

Description

Foldable screwdriver

The utility model is a kind of hand tools, belongs to tool class field.

The screwdriver that present people are used always generally can not fold and open automatically.Existing branch is inserted the formula screwdriver and is had shortcomings such as part is many, complex structure, cost height, and uses inconvenient.

The purpose of this utility model is to invent a kind of simple in structure, automatic screwdriver that cost is low, easy to use at above-mentioned shortcoming.

The utility model mainly is made up of institutes such as cutter head, handle of a knife, cutter shaft, springs.One control pin is housed on its handle of a knife, and the cutter head bottom has different slotted eyes, matches with the different end faces of control pin, can play and open the location, closes effects such as location.Control pin is made up of thicker truncated cone section of two cylindrical section therebetween, can move axially under external force and by spring reset.When cutter head open, when closing, the corresponding slotted eye that the truncated cone section of control pin is inserted cutter head plays positioning action.When the cutter head closed condition is pressed the pressure-controlled pin, the truncated cone section breaks away from the fixedly notch on the cutter head, and cutter head is upspring under the effect of spring, decontrols control this moment and sells, and its truncated cone section is inserted another notch of cutter head again, thereby makes cutter head be fixed on open mode.

Below in conjunction with example and accompanying drawing thereof in detail the utility model is described in detail.

Fig. 1,2, two sides of the present utility model cutaway view;

Fig. 3, cutter head shape figure of the present utility model;

Fig. 4, control keying composition of the present utility model;

Fig. 5, fundamental diagram of the present utility model.

Cutter head 1 carries out activity riveting connection with handle of a knife 9 usefulness cutter shafts 2 in this example, and promptly cutter shaft 2 two ends are riveted on the handle of a knife 9, and cutter head 1 is contained in the cavity of handle of a knife 9 and can rotates around cutter shaft 2.Control pin 3 also is installed on handle of a knife 9, and this pin is made up of thicker truncated cone section 16 of two cylindrical sections, 15 therebetween, by packing ring 5, retaining cap 4 snappers 7 grades are fixed on the handle of a knife 9, near cutter shaft 2 ends, when pushing snapper 7,3 displacements vertically of control pin, and can under the effect of spring 6, reset.Cutter head 1 bottom porose 14 is used for passing cutter shaft 2, and tangible groove 10 coincide with the truncated cone section 16 of control pin 3, in order to cutter head 1 is fixed on opening, also has a fixing hole 13, in order to identical and fix with the truncated cone section 16 of control pin 3 when the cutter head folded state.The arc-shaped slot 13 and the segmental arc 11 that link with hole 13 slide through in order to the cylindrical section that makes control pin 3 in the cutter head rotary course.Leaf spring 8 is arranged, in order to the cutter head 1 of upspringing in the cavity of handle of a knife 9.The utility model resembles a jackknife when folded state, appearance does not have sharp sword and exposes, and volume is small and exquisite, is easy to carry.In the time of need opening and using, only need press snapper 7, make the truncated cone section of control pin break away from hole 13, then cutter head 1 is upspring rapidly under the effect of leaf spring 8 and is stretched, and the truncated cone section 16 of controlled cotter insertion groove 10 and fixing under the effect of spring 6 can use again.In like manner, press snapper 7 usefulness external force cutter head 1 is turned back in the handle of a knife cavity, the truncated cone section of control pin patchhole 13 and fixing under the effect of spring 6 can not upspring voluntarily.

The utility model is simple in structure, dexterous, be easy to carry, and makes this kind of screwdriver common tool, and everybody can carry easily, especially driver, the repairing personnel that go out etc. is brought great convenience.

Claims (3)

1, a kind of automatic screwdriver, mainly form by institutes such as cutter head, handle of a knife, cutter shaft, springs, it is characterized in that being equipped with on the handle of a knife control pin, have leaf spring in the cavity of handle of a knife 9, said cutter head bottom has different slotted eyes and can match with the different end faces of control pin.

2, automatic screwdriver according to claim 1 is characterized in that said control pin is made up of thicker truncated cone section of two cylindrical section therebetween, can move axially under external force, and by spring reset.

3, automatic screwdriver according to claim 1 and 2 is characterized in that said cutter head respectively has the slotted eye that matches with control pin truncated cone section at open position and folding position.

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