CN202622655U

CN202622655U - Screwdriver

Info

Publication number: CN202622655U
Application number: CN 201220187894
Authority: CN
Inventors: 戴金兴
Original assignee: SUZHOU DENGWEI POLYESTER WADDING FACTORY
Current assignee: SUZHOU DENGWEI POLYESTER WADDING FACTORY
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2012-12-26
Anticipated expiration: 2022-04-28

Abstract

The utility model relates to a screwdriver. The screwdriver comprises a knife head, a knife handle and a protection layer, wherein the tail end of the knife head is inserted and fixed into the knife handle; the protection layer is made of metal and fixed at one end of the knife handle, which is connected with the knife head; the tail end of the knife head penetrates through the protection layer; a fixing block is also radially extended out of the tail end of the knife head; and the fixing block is clamped and fixed in the knife handle. The service life of the screwdriver is prolonged; and the screwdriver is low in manufacturing cost and very convenient to use and carry.

Description

A kind of screwdriver

Technical field

The utility model relates to a kind of fastened tools, and especially a kind of screwdriver belongs to manual fastened tools technical field.

Background technology

As the screw of fastenings, bolt etc., be widely used in and produce and various fields in life, its for produce and life in normal operations of some machines play a part very big.And as the instrument of trip bolt etc., screwdriver also by widespread usage in all fields.Screwdriver on the market all is made up of cutter head and handle of a knife, and the tail end of said cutter head inserts in the handle of a knife, and is fixed in the handle of a knife, and the top of said cutter head is arranged to in-line, cross or the like as required.In order to reduce cost, and the dynamics that grips of palm, cutter head is metal usually, handle of a knife is plastics; During fabrication, all be that the cutter head tail end is inserted in the die cavity, cast forms.Screwdriver in use because factors such as the position of screw and tightness, regular meeting shakes in handle of a knife during cutter head, seriously also can the compression failure handle of a knife, cause handle of a knife breaking with the cutter head junction, final cutter head can break away from handle of a knife, service life is shorter.In order to improve the service life of screwdriver, also have in the industry handle of a knife and cutter head are processed one, all be to process by a metal blank; Though improved the service life of screwdriver like this; But cost of manufacture compares higher, and this screwdriver is heavier, carry and use all not too convenient.

The utility model content

The utility model purpose be provide for the deficiency that overcomes prior art a kind of in light weight, cost is low, the screwdriver of long service life.

For achieving the above object, the technical scheme that the utility model adopts is: a kind of screwdriver comprises cutter head, handle of a knife and protective layer; The tail end of said cutter head inserts and is fixed in the handle of a knife; Said protective layer is made of metal, and protective layer is fixed on the end that handle of a knife is connected with cutter head; The tail end of said cutter head passes protective layer; The tail end of said cutter head also radially is extended with fixed block; Said fixed block fixes in handle of a knife.

Preferably, the thickness of said protective layer is 5～10mm.

Preferably, the cross section of said protective layer is a U-shaped.

Preferably, said fixed block is two, and near the fixed block diameter of cutter head tail end less than, near the fixed block diameter on cutter head top.

Because the utilization of technique scheme, the utility model compared with prior art has advantage:

A kind of screwdriver of the utility model scheme, it is at the fixed block that the cutter head tail end is provided with, be cast in the handle of a knife after, increased the contact area of cutter head and handle of a knife, improved the be connected dynamics of cutter head with handle of a knife; And handle of a knife is on its end that is connected with cutter head, and the coat of metal that is provided with has improved the intensity of handle of a knife, the service life of having improved screwdriver.And the screwdriver low cost of manufacture of the utility model, use and carry all very convenient.

Description of drawings

Below in conjunction with accompanying drawing the utility model technical scheme is described further:

Accompanying drawing 1 is the stereogram of the screwdriver of the utility model;

Accompanying drawing 2 is the cutaway view of the screwdriver of the utility model;

Wherein: 1, handle of a knife; 2, cutter head; 3, protective layer; 4, first fixed block; 5, second fixed block.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.

Accompanying

drawing

1,2 is the described a kind of screwdriver of the utility model, comprises cutter head 2, handle of a knife 1 and protective layer 3; The tail end of said cutter head 2 inserts and is fixed in the handle of a knife 1; Said protective layer 3 is processed by metals such as iron, steel, and protective layer 3 is fixed on the end that handle of a knife 1 is connected with cutter head 2; The tail end of said cutter head 2 passes protective layer 3; The thickness of said protective layer 3 is 5～10mm; The cross section of said protective layer 3 is a U-shaped; The tail end of said cutter head 2 also radially is extended with first fixed block 4 and second fixed block 5; Said first fixed block 4 and second fixed block 5 all fix in handle of a knife 1; Said first fixed block 4 is near the tail end of cutter head 2; Said second fixed block 5 is near the top of cutter head 2; The diameter of said first fixed block 4 is less than the diameter of second fixed block 5.

Above-mentioned screwdriver, its handle of a knife are plastic products, and the tail end of cutter head is cast in the handle of a knife, because the setting of cutter head tail end fixed block, have increased the contact area of cutter head and handle of a knife to a great extent, have improved the be connected constant intensity of cutter head with handle of a knife; And the coat of metal that is provided with of handle of a knife, strengthened the intensity of handle of a knife greatly.The screwdriver of the utility model, uses and carries all very convenient at the service life of not only having improved screwdriver, and its low cost of manufacture.

Below only be the concrete exemplary applications of the utility model, the protection domain of the utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the utility model rights protection scope.

Claims

1. a screwdriver comprises cutter head and handle of a knife, and the tail end of said cutter head inserts and is fixed in the handle of a knife, it is characterized in that: also comprise protective layer; Said protective layer is made of metal, and protective layer is fixed on the end that handle of a knife is connected with cutter head; The tail end of said cutter head passes protective layer; The tail end of said cutter head also radially is extended with fixed block; Said fixed block fixes in handle of a knife.

2. screwdriver according to claim 1 is characterized in that: the thickness of said protective layer is 5～10mm.

3. screwdriver according to claim 1 is characterized in that: the cross section of said protective layer is a U-shaped.

4. according to claim 2 or 3 described screwdrivers, it is characterized in that: said fixed block is two, and near the fixed block diameter of cutter head tail end less than, near the fixed block diameter on cutter head top.