CN2255893Y

CN2255893Y - Combined joint of box spanner

Info

Publication number: CN2255893Y
Application number: CN 96230063
Authority: CN
Inventors: 张振海
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-17
Filing date: 1996-06-17
Publication date: 1997-06-11
Anticipated expiration: 2006-06-17

Abstract

The utility model provides a combined type sheathing head of a sleeve cylinder spanner for screwing screws. More than one kind of screws or nuts can be matched selectively for disassembling the screws or the nuts. The utility model is a cylindrical article whose one end is opened and one end is closed. The depth parts of the axial interior of the opened end which are arranged at different axial directions are respectively provided with sleeve mouths which can be just engaged with the screws or the nuts, which have different dimensions. The outer side of the closed end has a joint which is extended at a staircase shape towards the axial direction of the closed end. The joint also has more than one dimension, and thus, can be jointed with the different sleeve mouths of the sleeve cylinder spanner selectively. The utility model can make the applicability of the sleeve cylinder spanner for the screws improved.

Description

Twist the compound bell and spigot joint of screw with box spanner

The utility model relates to twists the screw box spanner, particularly a kind of can being used with the screw box spanner, and selectively different with box spanner cover mouths engage to entangle the compound bell and spigot joint of different size screw with its box spanner that unloads.

The use of attachment screw box spanner, in order to the bell and spigot joint that the screw rotation is unloaded or tightened, known by people already, for example dismantle the employed cross four-head box spanner of doughnut, arbitrary headgear tube wherein only can be in order to dismantle a kind of size stud or nut, if different size screw or the nut of desire dismounting more than four kinds, then must on aforesaid four sleeve mouths, connect four bell and spigot joints that match in addition more respectively, but traditional single entry bell and spigot joint all a kind of size stud of socket or nut again.Therefore, with traditional cross four-head box spanner, its can be still limited in order to the number of dismounting different size screw-nut, when required number during greater than its number, need constantly to change cross box spanner, the single entry bell and spigot joint of perhaps commonly using quite makes us feeling inconvenient.

Main purpose of the present utility model will provide a kind of screw or nut that can selectively mate more kinds of different sizes, exactly in order to the compound bell and spigot joint of the box spanner that it is unloaded or tightens.

The purpose of this utility model is to realize like this, this compound bell and spigot joint that provides is the tubular article of an end opening one end sealing, the disalignment of its axial inner is to the depths, has the cover mouth that just can coincide respectively with the screw of different size, the blind end outside at this bell and spigot joint then has its axially extended joint on one day, and joint can engage with the cover mouth of screw box spanner by this; Therefore utilize compound bell and spigot joint of the present utility model, will make box spanner after mixing this compound bell and spigot joint, can be used to dismantle the screw of more different sizes.

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

Fig. 1 is an organigram of the present utility model

Fig. 2 is the cutaway view of Fig. 1 in the A-A position

Fig. 3 is a user mode schematic diagram of the present utility model

Among the figure

1-compound bell and spigot joint 10-openend

11-blind end, 12-the first cover mouth

13-the second cover mouth, 14-joint

2-cross spanner 20-cover mouth

At first see also Fig. 1 and Fig. 2, compound bell and spigot joint 1 of the present utility model, it is the tube-like element of open 10 other ends sealing 11 of an end, its inside axially have enough degree of depth, and this openend 10 is towards the direction of this blind end 11 certainly, pluralize first a bigger cover mouth 12 and the second less cover mouth 13 of landform one by one from large to small, the footpath section of above-mentioned first and

second cover mouth

12,13 is a kind of shape of just can coincide screw or nut, for example rectangle, hexagon or other polygon.Certainly, the 3rd cover mouth etc. can be set also, look actual establish and form.

The outside of the blind end 11 of aforementioned bell and spigot joint 1, have and axially be the joint 14 that the stage shape extends one day, this joint 14 has sizes different more than equally, and the footpath section configuration of this joint 14 must be a kind of cover mouth 20 identical persons of joining that just can overlap spanner 2 with traditional cross, for example rectangle, hexagon or other polygon, joint 14 selectively engages (Fig. 3) with the different cover mouths 20 of this cross spanner 2 by this.Therefore, utilize compound bell and spigot joint 1 of the present utility model, can make arbitrary head of traditional cross spanner 2, after mixing bell and spigot joint 1 of the present utility model, can be used for revolving the screw or the nut that unload or tighten more than one different sizes, cause cross spanner 2 not needing to change again and again under the situation of bell and spigot joint, just can be used for revolving screw or the nut that unloads or screw more than one different sizes.

In sum, be provided with the cover mouth of a plurality of sizes that vary in size in the compound bell and spigot joint of the present utility model, cross spanner can be improved and the screw number that unloads can be revolved, obviously have suitable progressive and practicality, and the above example system that discloses not is in order to limit technical characterictic of the present utility model in order to technical characterictic of the present utility model to be described.Therefore, do not take off any variation of technical characterictic scope of the present utility model such as, include in claim scope of the present utility model.

Claims

1, a kind of screw compound bell and spigot joint (1) of box spanner, selectively be matched with the cover mouth (20) of a box spanner (2), this bell and spigot joint (1) is an end opening (10), the tube-like element of one end sealing (11), blind end (11) outside in this bell and spigot joint (1) has its axially extended joint (14) on one day, this joint (14) can engage with the cover mouth (20) of box spanner (2), of the present utility model being characterised in that: at the different axial depth place of the axial inner of this bell and spigot joint (1), be respectively equipped with the cover mouth (12 that just can coincide with the screw of different size, 13), joint (14) then is a stage shape, and be of different sizes, selectively join with the different cover mouths (20) of this box spanner (2).

2, compound bell and spigot joint according to claim 1 (1), it is characterized in that, cover mouth (12,13) be to arrange one by one from large to small towards the direction of blind end (11) from openend (10), and the footpath section that should overlap mouth (12,13) is the shape of a kind of different size rectangle that just can coincide, hexagon or other polygon screws, nut.