CN202144055U

CN202144055U - Screwdriver

Info

Publication number: CN202144055U
Application number: CN201120231712U
Authority: CN
Inventors: 孟祥松
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2011-06-22
Filing date: 2011-06-22
Publication date: 2012-02-15
Anticipated expiration: 2021-06-22

Abstract

The utility model discloses a screwdriver which comprises a screwdriver handle, a screwdriver rod and a screwdriver head, wherein one end of the screwdriver rod is fixedly connected with the screwdriver handle, the other end of the screwdriver rod is provided with a groove, the shape and the depth of the groove are matched with those of the screwdriver head, two ends of the screwdriver head are provided with screwdriver blades with different types or different modes, an expanded part in the middle of the screwdriver head is a polyhedron which can be correspondingly inserted into the groove of the screwdriver rod according to positions of edges of the polyhedron, and the screwdriver handle is rotated, so that the screwdriver head can generate corresponding torque force which is used for mounting and dismounting screws. In the screwdriver, as the replaceable screwdriver head is arranged and the screwdriver blades are arranged at the two ends of the screwdriver head, when the type and the mode number of an equipped screwdriver head are fixed, the number of the screwdriver head is reduced, so that the screwdriver is convenient for carrying, saves materials and is easy to operate when the screwdriver head is replaced.

Description

A kind of screwdriver

Technical field

The utility model is applicable to the daily necessities field, is a kind of screwdriver specifically.

Background technology

Screwdriver is an instrument commonly used during people live, and existing screwdriver kind is various, has plenty of fixing hilted broadsword head, and what have has a removable cutter head, but the cutter head of most of screwdrivers all is that an end has blade.Especially the screwdriver that has interchangeable bit, when the cutter head kind that is equipped with and model quantity one regularly, cutter head is single-ended to have blade, has increased the quantity of cutter head undoubtedly, carries inconvenience, and during the replacing cutter head, complicated operation.

Summary of the invention

The purpose of the utility model provides a kind of screwdriver, and this screwdriver has removable cutter head, and all there is blade at the cutter head two ends.

The utility model solves the technical scheme that its technical problem adopted: a kind of screwdriver comprises hilt, knife bar and cutter head.One end of knife bar is fixedly connected with hilt, and the other end has a groove, and the shape of groove and the degree of depth cooperate with cutter head.The cutter head two ends have the blade of dissimilar or different model, and the part of expanding in the middle of the cutter head is polyhedron, can groove according to the corresponding insertion knife bar in the position of polyhedron rib in, rotating knife handle, cutter head promptly produce corresponding torsion, are used to load and unload screw.

The beneficial effect of the utility model is: owing to have removable cutter head and all there is blade at the cutter head two ends, when the cutter head kind that is equipped with and model quantity one regularly, reduced the quantity of cutter head, easy to carry, economical with materials, simple to operate during the replacing cutter head.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the cutter head structure sketch map of a kind of screwdriver of the utility model.

The drawing explanation:

1. cutter head; 2. knife bar; 3. groove; 4. hilt.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done further to specify, but be not restriction the utility model.

Referring to accompanying drawing, a kind of screwdriver of the utility model comprises hilt 4, knife bar 2 and cutter head 1.One end of knife bar 2 is fixedly connected with hilt 4, and the other end has a groove 3, and the shape of groove 3 and the degree of depth cooperate with cutter head 1.Cutter head 1 two ends have the blade of dissimilar or different model, and the part of expanding in the middle of the cutter head 1 is polyhedron, can groove 3 according to the corresponding insertion knife bar 2 in the position of polyhedron rib in.During use, select corresponding cutter head 1 according to the different model of screw, cutter head 1 other end is inserted in the groove 3, rotating knife is 4, and cutter head 1 promptly produces corresponding torsion, is used to load and unload screw.The two ends of exchange cutter head 1 can be used for loading and unloading the screw of different model.

Claims

1. a screwdriver comprises hilt, knife bar and cutter head, it is characterized in that: all there is blade at the two ends of cutter head.

2. a kind of screwdriver according to claim 1 is characterized in that: the part of expanding in the middle of the cutter head is polyhedron, and knife bar one end has a groove, and the shape of groove and the degree of depth cooperate with cutter head.