CN203712584U

CN203712584U - Sheath adjustable screwdriver

Info

Publication number: CN203712584U
Application number: CN201420083273.2U
Authority: CN
Inventors: 韩殿牧原; 宋朋; 费瑞振
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2014-07-16
Anticipated expiration: 2024-02-26

Abstract

The utility model relates to a sheath adjustable screwdriver. The sheath adjustable screwdriver comprises a screwdriver handle, a screwdriver tool bar and a screwdriver tool bit, wherein a tool bit thread is arranged at the outer part of the screwdriver tool bar; an internal thread which is connected with the tool bit thread in a matching manner is arranged inside a fixed sheath, a sheath convex ridge is arranged outside the fixed sheath, a conical chuck is arranged at the bottom of the fixed sheath, and a fixing lug is mounted outside the fixed sheath on the upper side of the conical chuck; a connecting sleeve is arranged at the front end of a solid handle, and sleeves the fixing lug, and the fixing lug is connected with the solid handle; the inner part of the fixed sheath is a cylindrical hollow structure, and the fixed sheath sleeves a bolted cap of a bolt; the screwdriver tool bit is connected with a pattern of the bolted cap in the matching manner. The sheath is arranged, so that the screwdriver can be positioned to mount and dismantle the bolt, and the screwdriver tool bit is prevented from being released during a using process to damage the pattern of the bolted cap, meanwhile, the solid handle can control the force exertion direction of the screwdriver tool bit to avoid release of the screwdriver tool bit, therefore, the sheath adjustable screwdriver has the advantage of convenience in use.

Description

The adjustable screwdriver of a kind of sheath

Technical field

The utility model relates to a kind of maintenance and installation instrument, specifically the adjustable screwdriver of a kind of sheath.

Background technology

At present, be arranged in bolt hole because bolt is threaded connection, there is larger steadiness, especially under long-term slacking, bolt and bolt hole rust corrosion, in the time of repair and replacement or dismounting, existing screwdriver in use, cross decorative pattern or a word decorative pattern of directly cutter head being aimed to nuts turn, therefore, and in such cases, screwdriver cutter head is very easily threaded off in nuts decorative pattern, repeatedly damage several times nuts, final bolt cannot take out in bolt hole, affects next step operation.

Summary of the invention

The utility model, for solving the problems of the technologies described above, provides a kind of sheath adjustable screwdriver, prevents the object of threading off thereby realize screwdriver in the time turning bolt.

To achieve these goals, the utility model is by the following technical solutions:

Provide a kind of sheath adjustable screwdriver, comprised screwdriver handle, screwdriver knife bar and screwdriver cutter head, described screwdriver knife bar outside is provided with cutter head screw thread; Fixed sheath inside is provided with the internal thread being connected with cutter head threaded engagement, is provided with sheath fin in fixed sheath outside, is conic clamp in fixed sheath bottom, in conic clamp upside fixed sheath outside, fixing ear is installed; Firm handle front end is provided with branch sleeve, and described branch sleeve is set in fixing ear outside, will fix ear and be connected with firm handle; Described fixed sheath inside is column type hollow-core construction, is enclosed within the nuts outside of bolt; Described screwdriver cutter head and nuts decorative pattern are in mating connection.

Wherein, described fixed sheath outside is cylindrical structure, is provided with 1-4 fixing ear in fixed sheath outside, and fixed sheath is provided with sheath fin.

Wherein, described fixed sheath outside is 4-8 limit shape column type structure, in the outside every one side of fixed sheath, is provided with fixing ear, is provided with sheath fin in fixed sheath.

Wherein, described conic clamp is inverted cone-shaped structure.

Wherein, to be arranged on apart from fixed sheath top length be the 2/3-4/5 position of fixed sheath entire length to described fixing ear.

The beneficial effects of the utility model: by being provided with sheath and firm handle, realizing screwdriver can locate bolt is carried out to installation and removal, prevent that screwdriver cutter head from threading off in use, damage the decorative pattern of nuts, simultaneously firm handle can be controlled screwdriver cutter head power thrusts, avoid screwdriver cutter head to thread off, have advantages of easy to use.

Brief description of the drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The general structure schematic diagram that Fig. 1 provides for the utility model embodiment;

In figure, 1. screwdriver handle, 2. screwdriver knife bar, 2.1. cutter head screw thread, 2.2. screwdriver cutter head, 3. fixed sheath, 3.1. conic clamp, 3.2. sheath fin, 3.3. fixes ear, 4. firm handle, 5. bolt.

Detailed description of the invention

Below in conjunction with specific embodiment, such scheme is described further.Should understand these embodiment is for the utility model being described instead of limiting scope of the present utility model.The implementation condition adopting in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.

Please refer to Fig. 1, the general structure schematic diagram that Fig. 1 provides for the utility model embodiment.

In a kind of specific embodiment, provide a kind of sheath adjustable screwdriver, comprise screwdriver handle 1, screwdriver knife bar 2 and screwdriver cutter head 2.2, described screwdriver knife bar 2 outsides are provided with cutter head screw thread 2.1; Fixed sheath 3 inside are provided with the internal thread being connected with cutter head screw thread 2.1, are provided with sheath fin 3.2 in fixed sheath 3 outsides, are conic clamp 3.1 in fixed sheath 3 bottoms, and fixing ear 3.3 is installed in conic clamp 3.1 upside fixed sheath 3 outsides; Firm handle 4 front ends are provided with branch sleeve, and described branch sleeve is set in fixing ear 3.3 outsides, will fix ear 3.3 and be connected with firm handle 4; Described fixed sheath 3 inside are column type hollow-core construction, are enclosed within the nuts outside of bolt 5; Described screwdriver cutter head 2.2 is in mating connection with nuts decorative pattern.

Concrete, described fixed sheath 3 outsides are cylindrical structure, be provided with 1-4 fixing ear 3.3 in fixed sheath 3 outsides, fixed sheath 3 is provided with sheath fin 3.2, when manually buttressing or turning fixed sheath 3, sheath fin 3.2 increases the frictional force of hand and fixed sheath 3, there is anti-skidding effect, fixed sheath 3 is arranged on after screwdriver knife bar 2 by screw thread, screwdriver cutter head 2.2 is aimed to nuts decorative pattern, regulate again fixed sheath 3 to adjust up and down height, make fixed sheath 3 be enclosed within nuts outside, when use, by hand steered live or turn fixed sheath 3 or firm handle 4, can control cutter head firmly, prevent that screwdriver cutter head 2.2 from threading off.

Further, described fixed sheath 3 outsides are 4-8 limit shape column type structure, in the outside every one side of fixed sheath 3, be provided with fixing ear 3.3, in fixed sheath 3, be provided with sheath fin 3.2, when manually buttressing or turning fixed sheath 3, sheath fin 3.2 increases the frictional force of hand and fixed sheath 3, has anti-skidding effect.

Further, described conic clamp 3.1 is inverted cone-shaped structure, is convenient to fixed sheath 3 to be arranged on nuts gap smaller part, easy to use.

Further, it is the 2/3-4/5 position of fixed sheath 3 entire length that described fixing ear 3.3 is arranged on apart from fixed sheath 3 top length, can be controlled cutter head and applied the direction of power by firm handle 4, easy to use.

Finally it should be noted that the only restriction for the technical solution of the utility model is described but not to the utility model protection domain of above embodiment.Although the utility model is explained in detail with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that and can modify or be equal to replacement the technical solution of the utility model, and do not depart from essence and the scope of technical solutions of the utility model.

Claims

1. the adjustable screwdriver of sheath, comprises screwdriver handle (1), screwdriver knife bar (2) and screwdriver cutter head (2.2), it is characterized in that: described screwdriver knife bar (2) outside is provided with cutter head screw thread (2.1); Fixed sheath (3) inside is provided with the internal thread being connected with cutter head screw thread (2.1), be provided with sheath fin (3.2) in fixed sheath (3) outside, be conic clamp (3.1) in fixed sheath (3) bottom, in conic clamp (3.1) upside fixed sheath (3) outside, fixing ear (3.3) be installed; Firm handle (4) front end is provided with branch sleeve, and described branch sleeve is set in fixing ear (3.3) outside, will fix ear (3.3) and be connected with firm handle (4); Described fixed sheath (3) inside is column type hollow-core construction, is enclosed within the nuts outside of bolt (5); Described screwdriver cutter head (2.2) is in mating connection with nuts decorative pattern.

2. the adjustable screwdriver of a kind of sheath according to claim 1, is characterized in that: described fixed sheath (3) is outside is cylindrical structure, is provided with 1-4 fixing ear (3.3) in fixed sheath (3) outside.

3. the adjustable screwdriver of a kind of sheath according to claim 1, is characterized in that: described fixed sheath (3) is outside is 4-8 limit shape column type structure.

4. according to the adjustable screwdriver of a kind of sheath described in any one claim in claim 1-3, it is characterized in that: described conic clamp (3.1) is inverted cone-shaped structure.

5. according to the adjustable screwdriver of a kind of sheath described in any one claim in claim 1-3, it is characterized in that: it is the 2/3-4/5 position of fixed sheath (3) entire length that described fixing ear (3.3) is arranged on apart from fixed sheath (3) top length.

6. the adjustable screwdriver of a kind of sheath according to claim 4, is characterized in that: it is the 2/3-4/5 position of fixed sheath (3) entire length that described fixing ear (3.3) is arranged on apart from fixed sheath (3) top length.