CN201333679Y

CN201333679Y - Screwdriver

Info

Publication number: CN201333679Y
Application number: CNU2008202335211U
Authority: CN
Inventors: 李永宾
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2009-10-28
Anticipated expiration: 2018-12-31

Abstract

A screwdriver comprises a handle and a screwdriver rod, wherein a sleeve is fixed on the handle and is perpendicular to the length direction of the handle; the rear small-diameter part of the screwdriver rod is inserted in the inner hole of the sleeve; the circular side surface of the variable-diameter part of the screwdriver rod and the front side surface of the sleeve are correspondingly provided with gear teeth which can be engaged with each other; the rear end of the screwdriver rod is provided with a circular groove; a leaf spring is fixed on the handle; a U-shaped open slot on the front end of the leaf spring is fastened in the circular groove of the screwdriver rod; the front part of the screwdriver rod is provided with a prismatic inner hole; a magnetic block is fixed on the bottom of the inner hole; and a corresponding prismatic screwdriver bit is inserted in the prismatic inner hole of the screwdriver rod. The utility model solves the technical problem that when having no load, the screwdriver rod and the handle of the prior screwdriver cannot rotate back; the utility model can increase the working efficiency and reduce labor intensity; and holding is comfortable.

Description

Screwdriver

Technical field:

The utility model relates to a kind of screwdriver, is used for fastening or knockout screw.

Background technology:

The present often screwdriver that uses, knife bar and handle can not relatively rotate for fixedlying connected, and the mode that can only rely on palm to rotate relative to handle when fastening or knockout screw realizes the rotation in the same way of knife bar, and efficient is lower; Handle is wrapped in knife bar one end outside in the same way, grasps uncomfortablely, and opplied moment is little, relatively requires great effort during use.

Summary of the invention:

The purpose of this utility model provides a kind of screwdriver, solves the technical problem that original screwdriver knife bar and handle can not backhaul when zero load rotate, solve handle grasp uncomfortable, opplied moment is little and the technical problem of effort.

The purpose of this utility model realizes as follows: the front end of knife bar has cutter head, there is handle the rear end of knife bar, fixed muffle on the handle, knife bar rear portion small diameter part branch is inserted in the sleeve endoporus, and the ring end face at knife bar reducing place and the front end face of sleeve are to there being the gear teeth of embedding mutually, and there is an annular groove knife bar rear end, fix a spring leaf on the handle, the spring leaf front end has open slot to be stuck in the annular groove of knife bar, and spring leaf is pressed knife compression rod forward, blocks knife bar again and avoids it to come off.During use, for example screw screw clockwise, application of force groove with the cutter head alignment screw, push handle forward, knife bar and sleeve rely on gear teeth meshing, during turning handle, knife bar is followed synchronous rotation, when palm turns an angle when changeing before can not continuing, semi-coast is to the preceding pressure of handle, pressure effect lower handle at spring leaf moves backward relative to knife bar, and the gear teeth of knife bar and sleeve break away from, at this time can be under the actionless situation of knife bar, palm drives the counterclockwise no-load return trip of handle, and then push down handle to the clockwise application of force of screw, and repeating above action, can fast screw be screwed.Equally when knockout screw, can reverse operation, reach the result of fast quick-detach equally.

The length direction of handle is vertical with the length direction of knife bar, forms T type structure.Behind the staff gripping handle, opplied moment is bigger, and is laborsaving during work.

There is the prismatic endoporus knife bar front portion, the bottom fixed magnetic piece of endoporus, the cutter head of the corresponding prismatic of insertion in the prismatic endoporus of knife bar.After cutter head inserts the prismatic endoporus, by magnetic block cutter head is held, the prismatic structure of cutter head and endoporus realizes circumferentially fixing purpose, prismatic can be with four ribs or six ribs.Cutter head and knife bar adopt movable connection method, can be convenient for changing various cutter head, realize that a bar joins the purpose of bull.Certainly cutter head and knife bar also can be integrative-structures.

The beneficial effect that the utlity model has is: can increase work efficiency, reduce labor intensity, grasp comfortable.

Description of drawings:

Accompanying drawing is the structural representation of the utility model screwdriver.

The specific embodiment:

With reference to accompanying drawing, a handle 6 is arranged, the direction fixed muffle 5 vertical on handle 6 with its length direction; A knife bar 2 is arranged, knife bar 2 rear portion small diameter part branches are inserted in sleeve 5 endoporus, the ring end face at knife bar 2 reducing places and the front end face of sleeve 5 are to there being the gear teeth 4 of embedding mutually, there is an annular groove knife bar 2 rear ends, fix a spring leaf 7 by screw on the handle 6, the U type open slot of spring leaf 7 front ends is stuck in the annular groove of knife bar 2, and handle 6 inner chamber installation opening places envelope has cover plate 8 and is screwed; There is the prismatic endoporus knife bar 2 front portions, the bottom fixed magnetic piece 3 of endoporus, the cutter head 1 of the corresponding prismatic of insertion in the prismatic endoporus of knife bar 2.

Claims

1, a kind of screwdriver, the front end of knife bar has cutter head, there is handle the rear end of knife bar, it is characterized in that: handle (6) is gone up fixed muffle (5), knife bar (2) rear portion small diameter part branch is inserted in sleeve (5) endoporus, and the ring end face at knife bar (2) reducing place and the front end face of sleeve (5) are to there being the gear teeth (4) of embedding mutually, and there is an annular groove knife bar (2) rear end, fix a spring leaf (7) on the handle (6), spring leaf (7) front end has open slot to be stuck in the annular groove of knife bar (2).

2, screwdriver according to claim 1 is characterized in that: the length direction of handle (6) is vertical with the length direction of knife bar (2), forms T type structure.

3, screwdriver according to claim 1 is characterized in that: there is the prismatic endoporus knife bar (2) front portion, the bottom fixed magnetic piece (3) of endoporus, the cutter head (1) of the corresponding prismatic of insertion in the prismatic endoporus of knife bar (2).