CN2129205Y

CN2129205Y - Monkey wrench with big force moment

Info

Publication number: CN2129205Y
Application number: CN 92227744
Authority: CN
Inventors: 肖凤坤
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-14
Filing date: 1992-07-14
Publication date: 1993-04-07
Anticipated expiration: 2002-07-14

Abstract

The utility model discloses a monkey wrench. The monkey wrench can not damage a fastener and can safely screw or remove the fastener when the monkey wrench works with big force moment. The monkey wrench with big force moment is provided with a groove on the plane of the opening of an ordinary wrench. The plane of the opening is divided into a short plane and a long plane. The long plane, the short plane and the groove all can work generally. When the monkey wrench works with big force moment, the short plane is used, which can prevent the plane of the opening from squeezing the edge angle of the fastener.

Description

Monkey wrench with big force moment

The utility model provides a kind of improved adjustable wrench, particularly tight at big moment backspin or adjustable wrench that can more safe and reliable work when pulling down securing member.

When common adjustable wrench is worked under big moment, magnify owing to opening is subjected to the effect of support reaction, to making the open-work face directly push the corner angle of securing member, often cause the corner angle damage of securing member, influence is normally used.

The purpose of this utility model is to provide a kind of improved adjustable wrench, does not squeeze the corner angle of hindering securing member when it can be worked under big moment, and makes operation safe reliable.

The purpose of this utility model realizes as follows: be processed with on the plane of the opening of common adjustable wrench and the heavy straight corresponding groove of depth direction, groove makes plane of the opening be divided into two parts in short plane and long plane on depth direction.The transverse shape of groove can be a broken line, also can be the semicircle camber line.Generally speaking, two planes and groove all can be used to screw or pull down securing member, use short plane when working under big moment.Because short plane and the contact range of securing member in plane of rotation are less than the length of side of securing member, so can not make the securing member damage because of the corner angle that directly push securing member.And the angle, garden is all made in plane of the opening and open end intersection and groove side and plane of the opening intersection, can the cut wound securing member.Bottom portion of groove is also made the angle, garden.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1, Fig. 2 are the utility model work schematic diagrames under different situations respectively.

With reference to Fig. 1, Fig. 2, on the plane of the opening of common adjustable wrench, be processed with and the heavy straight corresponding groove ［ 3 ］ of depth direction ［ 1 ］.Groove ［ 3 ］ makes plane of the opening be divided into ［ 4 ］ two parts in short plane ［ 2 ］ and long plane on depth direction ［ 1 ］.Generally speaking, lack plane ［ 2 ］, long plane ［ 4 ］ and groove ［ 3 ］ and all can be used to screw or pull down securing member.(be to use short plane ［ 2 ］ among Fig. 1, be to use groove ［ 3 ］ among Fig. 2) uses short plane ［ 2 ］ when working under big moment.With reference to Fig. 1, because the short plane ［ 2 ］ and the length of side of the contact range of securing member in the plane of circling round less than securing member, so can not make the securing member damage because of the corner angle that directly push securing member.And the side of plane of the opening and open end intersection and groove ［ 3 ］, with equal Cheng Yuan angle, plane of the opening intersection, can the cut wound securing member.The angle is also made in groove ［ 3 ］ bottom.The transverse shape of groove ［ 3 ］ can be that broken line also can be the semicircle camber line.

Claims

1, big moment adjustable wrench is characterized in that: have the corresponding groove [3] perpendicular to depth direction [1] on the plane of the opening of common adjustable wrench.

2, it is characterized in that according to the said big moment adjustable wrench of claim 1: the transverse shape of groove ［ 3 ］ can be that broken line also can be the semicircle camber line, and there is angle, transition garden each face intersection.