CN87200544U

CN87200544U - Wrench

Info

Publication number: CN87200544U
Application number: CN 87200544
Authority: CN
Inventors: 李常青
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-01-13
Filing date: 1987-01-13
Publication date: 1987-10-14

Abstract

The utility model discloses a hardware tool, in particular to a wrench. The goal of the wrench is to provide a new wrench, and the wrench can be used in the situation that the wrenches in the prior art can not be used. The wrench of the utility model is composed of a wrench jaw and wrench arms. The inner chamber of the wrench jaw is in slit into a positive 24 or positive 36 square column shape, and the cutting plane of the inner chamber is parallel with the axial lead of the positive 24 or positive 36 square column. The wrench has the advantages of convenient use and more functions, and the wrench can be used in the situation that the wrenches, such as solid wrenches and ring wrenches in the prior art can not work as well as has the advantages of the solid wrenches and ring wrenches.

Description

Wrench

The utility model relates to a kind of hardware ﹠ tools, particularly a kind of spanner.

As the conventional tool of a kind of correlation technique of the utility model, its name is called fork spanner, this spanner service life of industrial society at least more than 100 years, the front view of its concrete shape is as shown in Figure 1.It is chewed (1) and pulls arm (2) and form by pulling.Pull and chew (1) lumen openings and become non-closed state, its inner chamber two side parallels, and the inner chamber diapire is circular-arc, and two ends are connected with the two side respectively.Each wall surface of inner chamber is smooth, the no concave-convex requirement, this fork spanner can be used for pulling four jiaos and hexagonal spiral shell head securing member, but when pulling four jiaos or hexagonal spiral shell head securing member, around securing member, must have respectively to allow the space that arm rotates 90 ° or 60 ° of pulling of spanner.Will limit the use occasion of four jiaos and hexagonal spiral shell head securing member like this, perhaps make spanner can't be used for to satisfy the occasion of above-mentioned 90 ° or 60 ° conditions.

As the conventional tool of the another kind of correlation technique of the utility model, its name is called double offset ring spanner, and the front view of its concrete shape as shown in Figure 2.It is also chewed (1) and pulls arm (2) and form by pulling.Pull and chew the sealing of (1) inner chamber, and be one positive 24 prismatic body.This spanner also can be used for pulling four jiaos and hexagonal spiral shell head securing member.But when a direction around four jiaos or the hexagonal spiral shell head securing member has distance between barrier and fastener and the barrier to pull the wall thickness of chewing between (1) inside and outside wall less than double offset ring spanner, can't use double offset ring spanner.

Because in the prior art, the existing problem of double offset ring spanner particularly, the purpose of this utility model is to provide a kind of new spanner, so that this spanner can be used for spanners of the prior art such as fork spanner, double offset ring spanner the occasion that can't use, promptly possessing around securing member spiral shell head has barrier can't allow double offset ring spanner be inserted in securing member spiral shell head, and when not having fork spanner to pull arm to rotate needed space, can use spanner described in the utility model.

The purpose of this utility model reaches by following approach:

Spanner is chewed and is pulled arm and form by pulling, pull to chew inner chamber and be the positive 24 or positive 36 prismatic bodily forms that dissectd, cutting plane with cut open before positive 24 or positive 36 prism axial lines parallel.

Prismatic rib number should be 4 and 6 multiple simultaneously, is generally 24, can make like this to pull to chew the securing member that is used for four jiaos and hexagonal spiral shell head.

By preceding described: pull and chew inner chamber and be the positive 24 or positive 36 prismatic bodily forms that dissectd, we also think when pull chew surface of internal cavity long-pending for before cuing open positive 24 or positive 36 prism prismatic surface surface areas 3/4ths the time, can make spanner easy to use, the needed certain female surface chewed securing member spiral shell head of pulling in the time of looking after the spanner use again.The most important thing is: any barrier that the spanner in this moment work is pulled the direction of chewing court of lumen openings institute all can't constitute the obstacle to spanner work, and this problem can be consulted Fig. 3.

Pull the cutting plane of chewing inner chamber and pull the arm centre symmetry line and preferably become 25 ° of angles.

Fig. 1 is the front view of fork spanner;

Fig. 2 is the front view of double offset ring spanner;

Fig. 3 is the front view of embodiment of the present utility model in working order the time.

Below doing, further describes embodiment during the utility model is incited somebody to action in conjunction with the accompanying drawings.

Spanner is chewed (1) and is pulled arm (2) and form by pulling, pull to chew that surface of internal cavity is long-pending to be 3/4ths of positive 24 prism prismatic surface surface areas before cuing open, cutting plane (A) with cut open preceding positive 24 prism axial lines and parallel.Cutting plane (A) with pull arm (2) centre symmetry line (B) and become 25 ° of angles, be prior art about the spanner other parts of not stating in the present embodiment.

The utility model has following advantage compared to existing technology: easy to use, spanner both can insert from side direction the spiral shell head of securing member, can be inserted in from the securing member top again. Function is more, not only has the operational advantages of double offset ring spanner, and has the work characteristics of fork spanner, and has the function that double offset ring spanner and fork spanner do not have. Namely do not possess and do not have fork spanner to pull the space that arm is swung when condition of work, and when a direction had pair double offset ring spanner to produce the working barrier thing around four jiaos or hexagonal spiral shell head securing member, we can use this spanner described in the utility model.

Claims

1, a kind ofly chew (1) by pulling and pull the spanner that arm (2) is formed, pulling and chewing (1) inner chamber is the positive 24 or positive 36 prismatic bodily forms, it is characterized in that, pull to chew (1) inner chamber and dissectd, cutting plane (A) with cut open before pull and chew (1) inner chamber axial line and parallel.

2, spanner as claimed in claim 1 is characterized in that, pull after cuing open chew (1) surface of internal cavity long-pending be preferably cut open before positive 24 or positive 36 prism prismatic surface surface areas 3/4ths.

3, spanner as claimed in claim 1 or 2 is characterized in that, pulls the cutting plane (A) of chewing (1) inner chamber and pulls arm (2) centre symmetry line (B) and become 25 ° of angles.