CN205085889U - Retractable screwdriver - Google Patents

Abstract

The utility model relates to a retractable screwdriver, including cutter arbor, handle of a knife and sword groove, the cutter arbor is the L type, cutter arbor dolichocephaly position and the same axle center of handle of a knife, and cutter arbor brachycephaly position is tangent with the sword groove of handle of a knife, sword groove appearance is the L type. The utility model discloses simple structure, preparation low cost conveniently carries to solve the relative slip problem of traditional screwdriver cutter arbor and handle of a knife, it is big to bear the moment of torsion, can use widely.

Description

A kind of extension type screwdriver

Technical field

The utility model relates to screwdriver field, particularly relates to a kind of extension type screwdriver.

Background technology

screwdriverthat one is used for twisting screwwith the instrument forcing it in place, but conventional screw-driver in order length is fixed, so made operator be caught unprepared by rotary screw because of position for some, and conventional screw-driver in order is because the reason of processing technology makes the used moment of torsion of screwdriver relatively little, and the use of some high pulling torque short time will make screwdriver lose original effect.For this phenomenon, the utility model provides a kind of extension type screwdriver, and structure is simple, easy to carry, and can bear high pulling torque operation.

Utility model content

In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of extension type screwdriver.

For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model provides a kind of extension type screwdriver, comprises knife bar, handle of a knife, cutter groove, and described knife bar is L-type, the long head position of knife bar and handle of a knife concentric, and the cutter groove of knife bar brachycephaly position and handle of a knife is tangent, and described cutter groove profile is L-type.Overall structure is simple, and cost of manufacture is cheap, makes to carry convenient.

Further, the opening angle of described cutter groove is 90 °, further ensures can bear moment of torsion and enough meet user's demand.

Compared with prior art, the beneficial effects of the utility model are: the utility model structure is simple, easy to carry, and can bear high pulling torque operation.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model;

Wherein: 1, knife bar, 2, handle of a knife, 3, cutter groove.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model

As shown in the figure, a kind of extension type screwdriver, comprises knife bar 1, handle of a knife 2, cutter groove 3, and knife bar 1 is L-type, the long head position of knife bar 1 and handle of a knife 2 concentric, and the cutter groove 3 of knife bar 3 brachycephaly position and handle of a knife 2 is tangent and arbitrarily can slide along cutter groove, and cutter groove 3 profile is L-type.

Wherein, the opening angle of cutter groove 3 is 90 °.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.

Claims (2)

1. an extension type screwdriver, comprise knife bar (1), handle of a knife (2), cutter groove (3), it is characterized in that: described knife bar (1) is L-type, the long head position of knife bar (1) and handle of a knife (2) concentric, the cutter groove of knife bar (1) brachycephaly position and handle of a knife (2) is tangent, and described cutter groove (3) profile is L-type.

2. a kind of extension type screwdriver according to claim 1, is characterized in that: the opening angle of described cutter groove (3) is 90 °.