CN203210286U

CN203210286U - Effort-saving screw driver

Info

Publication number: CN203210286U
Application number: CN 201320188185
Authority: CN
Inventors: 胡旭辉
Original assignee: NINGBO SUNTHAI BEARING CO Ltd
Current assignee: NINGBO SUNTHAI BEARING CO Ltd
Priority date: 2013-04-15
Filing date: 2013-04-15
Publication date: 2013-09-25
Anticipated expiration: 2023-04-15

Abstract

The utility model discloses an effort-saving screw driver. The effort-saving screw driver comprises a handle (1), a tool rod (2) and a tool head (4), the handle (1) and the tool head are mutually connected through the tool rod (2), the tool rod (2) comprises an upper tool rod (21) and a lower tool rod (22), one end of the upper tool rod (21) is fixedly connected with the handle (1), the other end of the upper tool rod (21) is movably connected with one end of the lower tool rod (22), the other end of the lower tool rod (22) is movably connected with one end of the tool head (4), a sleeve cylinder (20) is sleeved on the upper tool rod (21), and a bearing (5) used for enabling the sleeve cylinder (20) to rotate is arranged between the sleeve cylinder (21) and the tool rod (2). The effort-saving screw driver has the advantages that due to the fact that the sleeve cylinder and the bearing are arranged on the tool rod, when the effort-saving screw driver is used, a user can hold the sleeve cylinder with a hand and rotates the handle to carry out operation, and the effort-saving screw driver plays a role in stabilizing the tool head, and can be used very conveniently. The tool rod is designed to be capable of bending, and when the effort-saving screw driver is operated in a narrow space, the screw driver can be bent to carry out operation, and due to the fact that the screw driver is bent, torque is increased, and the operation saves more effort.

Description

Laborsaving screwdriver

Technical field

The utility model relates to a kind of hand-operated tools, specifically is a kind of laborsaving screwdriver.

Background technology

The screwdriver multidigit knife bar of using always is fixedlyed connected with handle of a knife or is flexibly connected (replaceable knife bar) at present, and the structure of handle of a knife is identical substantially, all is straight rod type.There is following shortcoming in this screwdriver: when 1, using, and the end that must withstand handle of a knife with the centre of the palm, hand ceaselessly rotates handle of a knife, like this, makes screwdriver easily skid, and cutter head breaks away from workpiece, and requires great effort very much, and operating efficiency is extremely low; 2, because handle of a knife is straight, and regular meeting runs into screw of installation or removal in a conned space in actual life, common screwdriver can't be put to good use at special narrow space, and this brings a lot of inconvenience to work.In order to address the above problem, the existing patent No. discloses a kind of structure for the Chinese utility model patent that the CN200720159501.X name is called " a kind of laborsaving screwdriver ", its structure comprises lever, be connected the cutter head bar that has cutter head below the lever, it is characterized in that: between cutter head bar and lever, be connected with crank, one end of crank is sleeved on the lever rotationally, the other end is connected the top of cutter head bar by dismountable snap fit, and the stage casing of crank is set with sleeve rotationally.The end that crank is connected with the cutter head bar has inner hexagonal hole, is installed with permanent magnet in this inner hexagonal hole, and the end shape of cutter head bar is the hexagonal cylinder that cooperates with inner hexagonal hole.This screwdriver has prolonged work moment by crank, and is comparatively laborsaving during use.But its shortcoming is: the use in the small space operation is inconvenient, therefore need design a kind of new combined screwdriver, realizes using purpose more easily.

Summary of the invention

Technical problem to be solved in the utility model be provide at the above-mentioned state of the art a kind of can bending, laborsaving screwdriver easy to use, to reach the purpose in the small space more convenient operation.

The utility model solves the problems of the technologies described above the technical scheme that adopts: this laborsaving screwdriver, comprise handle, knife bar and cutter head, described handle and cutter head interconnect by knife bar, it is characterized in that: described knife bar comprises knife bar and following knife bar, a described end of going up knife bar is fixedlyed connected with handle, the described other end of going up knife bar is movably connected with following knife bar one end and connects, the other end of described knife bar down and cutter head one end are movably connected and connect, and knife bar is equipped with a sleeve on described, is provided with the bearing that can rotate for sleeve between sleeve and knife bar.

As improvement, the described other end of going up knife bar and the following knife bar one end structure that connects that is movably connected can be preferably: on the other end of described last knife bar two lugs are set, described knife bar one end down is reducing diameter part, and described reducing diameter part is to be folded between two lugs and by horizontal bearing pin and two lugs to be movably connected.

As improvement, the other end of described down knife bar and the cutter head one end structure that connects that is movably connected may be selected to be: convex with two pivot ears on the other end of described time knife bar, described cutter head one end is plat part, and described plat part is to be folded between the two pivot ears and by horizontal pivot pin and two pivot ears to be movably connected.

As improvement, the other end of described cutter head also can be provided with for different cutter kinds and insert fixing locating hole.

Improve, described locating hole may be selected to be inner hexagonal hole or interior four jiaos of holes again.

Improve, the middle part periphery on the described knife bar down also can be equipped with the sheath of being convenient to shake hands again.

Compared with prior art, advantage of the present utility model is: at knife bar sleeve and bearing are set, during use, can operate by hand steered sleeve rotary handle, played the effect of stable cutter head, and very easy to use; Described knife bar comprises knife bar and following knife bar, a described end of going up knife bar is fixedlyed connected with handle, the described other end of going up knife bar is movably connected with following knife bar one end and connects, the other end of described knife bar down and cutter head one end are movably connected and connect, structure Design when some narrow space operations, can bend screwdriver and operate like this, and because bending has increased moment of torsion, make that operation is more laborsaving; And the utility model is simple and reasonable, easy to use laborsaving, the simultaneously bent requirement that can satisfy in the small space operation, thus improved operating efficiency.

Description of drawings

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

Fig. 2 is along the cutaway view of A-A line among Fig. 1;

Fig. 3 is the stereogram that cutter head is mixed different cuttves among Fig. 1;

Fig. 4 is the three-dimensional exploded view of Fig. 3;

Fig. 5 is the stereogram under Fig. 3 bending state;

Fig. 6 is the stereogram under another bending state of Fig. 3.

The specific embodiment

Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.

Extremely shown in Figure 6 as Fig. 1, the laborsaving screwdriver of present embodiment, comprise handle 1, knife bar 2, cutter head 4, described knife bar 2 comprises knife bar 21 and following knife bar 22, a described end of going up knife bar 21 is fixedlyed connected with handle 1, the described other end of going up knife bar 21 is movably connected with following knife bar 22 1 ends and connects, the other end of described knife bar 22 down and cutter head 4 one ends are movably connected and connect, end at cutter head 4 is provided with the locating hole 42 that can insert for the afterbody of different cutter kinds 3, the other end at last knife bar 21 arranges two lugs 23, described down knife bar 22 1 ends are reducing diameter part 24, and described reducing diameter part 24 is movably connected for being folded between two lugs 23 and by horizontal bearing pin 7 and two lugs 23.Convex with two pivot ears 26 at the following other end of knife bar 22, described cutter head 4 one ends are plat part 41, and described plat part 41 is movably connected for being folded between the two pivot ears 26 and by horizontal pivot pin 8 and two pivot ears 26.Described locating hole 42 is inner hexagonal hole or interior four jiaos of holes; Middle part periphery on the described knife bar 22 down is nested with the sheath of being convenient to shake hands 25.

During work, after different cutter kinds 3 and screw can being located, sleeve 20 rotary handles 1 of shaking hands just can be with the screw installation or removal, avoided originally must withstanding with the centre of the palm end of handle 1, and screwdriver easily skids the different cutter kinds 3 easy problems that break away from workpiece, and owing to be provided with bent knife bar 2, not only increased operation torque, made that operation is more laborsaving, can satisfy at narrow space simultaneously and operate.

Claims

1. laborsaving screwdriver, comprise handle (1), knife bar (2) and cutter head (4), described handle (1) interconnects by knife bar (2) with cutter head, it is characterized in that: described knife bar (2) comprises knife bar (21) and following knife bar (22), a described end of going up knife bar (21) is fixedlyed connected with handle (1), the described other end of going up knife bar (21) is movably connected with following knife bar (22) one ends and connects, the other end of described knife bar (22) down and cutter head (4) one ends are movably connected and connect, and knife bar (21) is equipped with a sleeve (20) on described, is provided with the bearing (5) that can supply sleeve (20) to rotate between sleeve (20) and knife bar (2).

2. laborsaving screwdriver according to claim 1, it is characterized in that: the described other end of going up knife bar (21) and following knife bar (22) the one ends structure that connects that is movably connected is: on the other end of described last knife bar (21) two lugs (23) are set, described knife bar (22) one ends down are reducing diameter part (24), and described reducing diameter part (24) is movably connected for being folded between two lugs (23) and by horizontal bearing pin (7) and two lugs (23).

3. laborsaving screwdriver according to claim 1, it is characterized in that: the other end of described down knife bar (22) and cutter head (4) the one ends structure that connects that is movably connected is: convex with two pivot ears (26) on the other end of described time knife bar (22), described cutter head (4) one ends are plat part (41), and described plat part (41) is movably connected for being folded between the two pivot ears (26) and by horizontal pivot pin (8) and two pivot ears (26).

4. according to arbitrary described laborsaving screwdriver in the claim 1 to 3, it is characterized in that: the other end of described cutter head (4) is provided with for different cutter kinds (3) and inserts fixing locating hole (42).

5. laborsaving screwdriver according to claim 4 is characterized in that: described locating hole (42) is inner hexagonal hole or interior four jiaos of holes.

6. according to arbitrary described laborsaving screwdriver in the claim 1 to 3, it is characterized in that: the middle part periphery on the described knife bar (22) down is nested with the sheath of being convenient to shake hands (25).