CN2744470Y - Spanner - Google Patents

Abstract

The utility model relates to a spanner, comprising a spanner body and a driving end fixedly connected with the spanner body. The driving end is a flywheel whose inner shaft is provided with a quincunx structure adapting to a nut. Because of the above structure, the driving end is not necessarily taken out, the spanner is not necessarily mounted again, and the function in installing and dismounting the nut can be realized by rotating back and forth.

Description

Spanner

Technical field

The utility model relates to a kind of common tool, particularly a kind of spanner.

Background technology

As everyone knows, spanner has the complete open spanner of fixed dimension and box spanner, adjustable monkey wrench, can replace the ratchet spanner of end, but all spanners in use, all need rotate with the nut of biconditional operation, because the residing spatial operation in installation position of some nut is very inconvenient, spanner turns to certain position and must take out from new installation and just can work on when installation or removal, and this has brought many inconvenience to the user.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides a kind of easy to use, does not need taking-up and from new assembly wrench, only need come back rotation can realize the spanner of the installation and removal function of nut.

For achieving the above object, the technical solution adopted in the utility model is: comprise wrench body and the driving end of fixedlying connected with wrench body, be characterized in that driving end is the flywheel that interior axle has the plum blossom structure that matches with nut.

Another characteristics of the present utility model are: axle also is fixed with shell fragment in the driving end.

Have the plum blossom flywheel supporting because driving end of the present utility model is interior axle,, only need come back rotation can realize the spanner of the installation and removal function of nut so in use do not need to take out from new assembly wrench with nut.

Description of drawings

Accompanying drawing is an overall structure schematic diagram of the present utility model;

The specific embodiment

Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.

Referring to accompanying drawing, the utility model spanner comprises that the interior axle that is arranged on wrench body 1 two ends has the wheel wrench head 2 of the plum blossom structure that matches with nut, and axle also is fixed with shell fragment 3 in driving end 2.

During the turn of the screw in use, with facing up of writing " tightly " word on the spanner, driving end 2 is inserted in the nut, because spanner is when pulling left, the wheel wrench head 2 on the spanner slides and can not drive the nut that is sleeved on driving end 2 front ends and rotates.When pulling to the right, nut is screwed into, and gets final product so pull spanner about only needing, and so repeatedly, just nut can be screwed into, and when back-outing screw, spanner need only be turned over and be inserted in nut again and turn repeatedly and get final product.

Claims (2)

1, a kind of spanner comprises wrench body [1] and the driving end [2] of fixedlying connected with wrench body [1], it is characterized in that: said driving end [2] has the flywheel of the plum blossom structure that matches with nut for interior axle.

2, spanner according to claim 1 is characterized in that: axle also is fixed with shell fragment [3] in the said driving end [2].