CN2836990Y

CN2836990Y - An open-end wrench

Info

Publication number: CN2836990Y
Application number: CN 200520062033
Authority: CN
Inventors: 贵人兵
Original assignee: 杨文明
Priority date: 2005-07-29
Filing date: 2005-07-29
Publication date: 2006-11-15
Anticipated expiration: 2015-07-29

Abstract

The utility model discloses an open-end wrench, which includes a wrench body and wrench ends. The section shape of the wrench end is designed to have six lateral surfaces according to the section shape of a hexagon nut, wherein the left lateral surface is the contact surface; the cambered surface is a circular arc, contacting the vertexes of the hexagon nut; the A right lateral surface, the A right bottom surface, the B right lateral surface and the B right bottom surface are working faces. The wrench adopting the structure features in simple structure, easy fabrication, low cost, flexible use, convenience and reliability.

Description

A kind of fork spanner

Technical field:

The present invention relates to the wrench technical field.

Background technology

Existing stiff hand often only to tighten or to unscrew a kind of specifications of nuts, uses inconvenience, and same machine often needs repeatedly to change spanner, causes the waste of machining period.

Summary of the invention

At above technical problem, goal of the invention of the present utility model is to provide a kind of fork spanner that uses flexibly, makes things convenient for, goes for reliably the hex nut of different size.

For solving above technical problem, the technical solution of the utility model is: fork spanner, comprise and pull body, spanner mouth, the cross sectional shape of spanner mouth is designed to six sides by the cross sectional shape of hex nut, left surface is a contact-making surface, cambered surface is a circular arc, contacts with the hex nut summit, and A right flank, the right bottom surface of A, B right flank, the right bottom surface of B are working face.

Adopt the wrench of said structure simple in structure, make easily, product cost is low, uses flexible, convenient, reliable.

Description of drawings:

Fig. 1 is a front view of the present utility model.

Fig. 2 is a vertical view of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified:

Extremely shown in Figure 2 as Fig. 1, a kind of fork spanner of the present utility model, comprise and pull body 1, spanner mouth 2, the cross sectional shape of described spanner mouth 2 is designed to six sides by the cross sectional shape of hex nut, left surface 3 is a contact-making surface, cambered surface 4 is a circular arc, contacts with the hex nut summit, and A right flank 5, the right bottom surface 6 of A, B right flank 7, the right bottom surface 8 of B are working face.

When stiff craft of the present utility model is done, left surface 3, cambered surface 4, A right flank 5, the right bottom surface 6 of A can form a kind of combination, left surface 3, cambered surface 4, B right flank 7, the right bottom surface 8 of B can form another kind of combination, and the hex nut of two kinds of different sizes can be tightened or unscrew to the stiff hand of interlock.

Certainly, all dispose the mouth of pulling of different size at the two ends of stiff hand, the hex nut of four kinds of different sizes then can be tightened or unscrew to fork spanner of the present utility model.

Claims

1, a kind of fork spanner, comprise and pull body (1), spanner mouth (2), it is characterized in that: the cross sectional shape of described spanner mouth (2) is designed to six sides by the cross sectional shape of hex nut, left surface (3) is a contact-making surface, cambered surface (4) is a circular arc, contact with the hex nut summit, A right flank (5), the right bottom surface (6) of A, B right flank (7), the right bottom surface of B (8) are working face.