CN105397700A

CN105397700A - One-way curved bar screwdriver

Info

Publication number: CN105397700A
Application number: CN201610006412.5A
Authority: CN
Inventors: 陈烁
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-05
Filing date: 2016-01-05
Publication date: 2016-03-16

Abstract

The invention discloses a one-way curved bar screwdriver, belongs to the field of hardware, and has the beneficial effect of transferring torque in a curving manner. The technical scheme of the one-way curved bar screwdriver is implemented in a way that the one-way curved bar screwdriver comprises a cutter bit, a main handle, wherein the cutter bit is connected with the main handle through a metal flexible shaft, and the metal flexible shaft is sheathed in a tubular curved bar with three curved sections in right-angle shapes; a boss is arranged at the lower end of the cutter bit, a bearing is arranged between the upper end face of the curved bar and the boss, meanwhile an auxiliary handle is arranged at the middle section of the curved bar. The one-way curved bar screwdriver is applied to a narrower operating space.

Description

Unidirectional curved bar screwdriver

Technical field

The invention belongs to hardware & tools field, specifically refer to a kind of unidirectional curved bar screwdriver.

Background technology

Screwdriver is from a kind of instrument apparatus not in people's daily life and operation, be mainly used to unload screw or bolt, it is generally made up of the knife bar of handle and direct rod shape, the outer end of knife bar is that yi word pattern or criss-cross cutter head are to adapt to the head of a nail of different edge of a knife shape, knife bar and handle are on same axis, also require that the axis that this axis aligns screw reverses screw driver handle while apply a pressure to screw to ensure that driver bit docks with the reliable of the screw head of a nail in use, if the larger this screwdriver in the space of operation tool can align screw come on unload and use easily, if and the space of operation tool is restricted the screwdriver that such as narrow space is difficult to hold whole, instrument now uses just very difficult, though can be inadequate cutter head is aimed at the head of a nail, but the restriction because of narrow space cannot accomplish that the axis of screwdriver and the axis of nail bar are on same axis, so just cannot transmit turning moment reliably, can not normal operating, conveniently in such cases people life and produce just need a kind of screwdriver of the curved bar that can bend that the straight-bar of screwdriver can be transformed to adapt to narrower and small operating space.

Summary of the invention

Object of the present invention provides a kind of new technical scheme of screwdriver unidirectional curved bar screwdriver, and it can meet above-mentioned needs.

Technical scheme of the present invention is achieved in that it comprises cutter head, main handle, and connected by a metal flexible axle between described cutter head and main handle, it is in the tubulose curved bar of three sections that metal flexible axle is set on a rectangular sigmoid; The lower end of described cutter head is provided with boss, and between the upper surface and boss of curved bar, device has a bearing, also has auxiliary handle at position, the stage casing device of curved bar simultaneously.

The invention has the beneficial effects as follows: the transmission torsion that can bend.

accompanying drawing illustrates:

Fig. 1 is the front view (containing cutter head position partly cut open zoomed-in view) of the design's screwdriver.

In figure, 1 is cutter head, and 2 is bearing, and 3 is metal flexible axle, and 4 is curved bar, and 5 is auxiliary handle, and 6 is main handle, and 7 is boss.

detailed description of the invention:

The design is illustrated below in conjunction with accompanying drawing.

As shown in Figure 1, the screwdriver of the design comprises cutter head 1, main handle 6, coupled together by a metal flexible axle 3 between cutter head and main handle, it is in the tubulose curved bar 4 of three sections that metal flexible axle is set on a rectangular sigmoid, metal flexible axle 3 be a kind of steel wire form concentric spirals by many certain rugosity close around Long Circle bar, the folding that it can make larger angle is in the axial direction bent break-in and can transmit larger torsional moment diametrically, and namely its rotary torsion of transmission one end that can bend is to the other end; The lower end of cutter head 1 is provided with boss 7, and between the upper surface of curved bar 4 and boss 7, device has a pressure bearing 2, also has auxiliary handle 5 at position, the stage casing device of curved bar 4 simultaneously.During concrete use, both hands hold main handle 6, auxiliary handle 5 respectively, cutter head aligned the edge of a knife at screw head of a nail position and apply a thrust in case anti-avulsion position, rotate main handle, torsional moment will be delivered to the cutter head of the other end by metal flexible axle, bearing also can this transmission of power-assisted and can not blocking, thus in narrower operating space, complete the operation of the screw up and down that common straight-bar screwdriver can not complete.

Claims

1. a unidirectional curved bar screwdriver, it comprises cutter head, main handle, it is characterized in that being connected by a metal flexible axle between described cutter head and main handle, and it is in the tubulose curved bar of three sections that metal flexible axle is set on a rectangular sigmoid; The lower end of described cutter head is provided with boss, and between the upper surface and boss of curved bar, device has a bearing, also has auxiliary handle at position, the stage casing device of curved bar simultaneously.