CN2190539Y

CN2190539Y - Improved sleeve structure

Info

Publication number: CN2190539Y
Application number: CN 93243187
Authority: CN
Inventors: 林健国
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-22
Filing date: 1993-10-22
Publication date: 1995-03-01
Anticipated expiration: 2003-10-22

Abstract

The utility model relates to an improved sleeve barrel structure. The sleeve barrel is sheathed with a wrenched body to form a wall surface type sheathed entirety and is wrenched to work; the wrenching effect is good, and the wrenched body is not damaged. The wall corner of the sleeve groove wall of the sleeve barrel body is designed into outward deep concave shape. The surface of the sleeve barrel is not completely plane, and dome-shaped left and right diagonal top embedded surfaces are formed. The left or the right top embedded surface is contacted against two wall surfaces of the wrenched body, so the working area of the sleeve barrel wrenching to right or left is increased, and the sleeve barrel works in a non-point contact mode. The active wrenching area of the sleeve barrel during working and forcing is large, and the torque force is increased, so the wrenched body is easy to wrench. Particularly, the wall surface type sheathed entirety is force to work, so the skid phenomenon is avoided, and the damage of the side corner of the wrench body caused by over violent force is also avoided.

Description

Improved sleeve structure

The utility model relates to a kind of tube-in-tube structure of improvement, refers to that especially a kind of sleeve groove wall is the sleeve of non-whole plane, when making the sleeve work done, is the metope formula with the fit of being pulled body, increases work done face, and outstanding tool does not destroy the effect of being pulled the angle, side.

Sleeve is widely used instrument, its grooving or be provided with quadrangle or hexagon or other geometric, but no matter be which kind of shape, its groove wall all is set as the whole plane formula, that is as shown in Figure 1, formed each the groove wall of the groove angle of sleeve body 20 is the whole plane formula, and for allowing body 20 make things convenient for fit to be pulled body 10, its groove diameter must be greater than being pulled body 10 diameters, (general about 0.3mm), just pulled body 10 diameters greater than quilt, and when using, produced following shortcoming because of the groove footpath:

1. as shown in Figure 1, pull (commentaries on classics) when moving when sleeve body 20, must produce the oblique angle type contact, body 20 groove walls are put 21 forms with the top embedding, and are pulled the work done of pulling that embedding angle, body 10 top 11 is a little; Be understandable that, the contact embedding of some top, may be because of the application of force too quickly or to be pulled the solid power of body 10 contracts excessive, destroy and pulled embedding angle, body 10 top 11 and cause body 20, cause the solid poor effect of the cover that continues to pull, even can't overlap solid use again.

2. contact work done can't be resisted bigger application of force effect, or destroyed as above-mentioned embedding angle 11, top, or produces skidding; That is its torsional forces is relatively poor, low torsion, and it is relatively poor to make work done pull effect.

3. because of being top embedding work done a little, must stress body 20 grooves and the fit tight ness rating of being pulled body 10 as far as possible, the side reduces skids, destroys embedding angle, top 11 problems, when making that desiring to pull a quilt is pulled body, essential careful anthology body 20 groove sizes, can not use it with body 20 grooves of general size, and make body 20 scope of applications less.

The purpose of this utility model is to provide a kind of tube-in-tube structure of improvement, and it is the top embedding work done of metope formula fit, pulls torsion and improve, and applicable more multiple size is pulled body and had does not destroy the effect of pulling embedding angle, body top.

For realizing the tube-in-tube structure of a kind of improvement that the purpose of this utility model proposes, it comprises a sleeve body, have the polygonal grooving of a perforation on this sleeve body, it is characterized in that: the formed corner of groove wall of grooving is set as outside slightly depression, so that each limit of groove wall has a left oblique top embedding face and a right oblique top embedding face, be large tracts of land top by oblique top embedding face and be affixed on and pulled the body vertical plane, and prevent sleeve body and pulled body and skid and destroy the effect of being pulled body.

For effect of the present utility model is understood fully, lift a preferred embodiment conjunction with figs. now, be set as, use efficacy characteristics with regard to structure of the present utility model, be described in more detail in the back:

Fig. 1 is traditional type structure, user mode schematic diagram;

Fig. 2 is the utility model preferred embodiment stereogram;

Fig. 3 is inserted in for the utility model preferred embodiment and is pulled the body schematic diagram;

Fig. 3 A turns right for the utility model preferred embodiment and pulls view;

Fig. 3 B turns left to pull view for the utility model preferred embodiment.

See also Fig. 2, it is the utility model preferred embodiment stereogram, one sleeve body 30 is provided with grooving 31, its formed corner of groove wall is to be set as outwards slightly to cave in again, that is, keep under the constant situation of grooving 31 interior diameters, make grooving 31 shapes be polygonal, form each limit and have left oblique top embedding face 32, right oblique top embedding face 33, its groove wall is into non-whole plane, and is mound shape groove wall; It uses efficacy characteristics to be: please consult Fig. 3,3A and 3B again, be sleeved on when being pulled body 10 when sleeve body 30, because of the interior diameter of grooving 31 does not change, so also can meet the distance of being pulled 12 of 10 liang of vertical planes of body, and extremely make things convenient for fit to be pulled body 10(as shown in Figure 3); And turn right (shown in Fig. 3 B) when pulling as doing, be that sleeve body 30 is turned right, its right oblique top embedding face 33 just can push up and be affixed on the vertical plane 12 of being pulled body 10, during the application of force, is by right oblique top embedding face 33 active force to be acted on to be pulled body 10 vertical planes again.Otherwise, as for turning left to pull (as shown in Figure 3A), be to be affixed on by left oblique top embedding face 32 tops to be pulled body 10 vertical planes 12, by left oblique top embedding face 32 active force is acted on vertical plane; That is the utility model is pulled work done to pulling body 10, is to be metope shape thrust in being pulled body 10 vertical planes 12 by left and right oblique top embedding face 32,33; By above-mentioned explanation, can form following advantage feature:

1. be to be large-area effect to promote with pulling body 10, but not be contact promotion a little, its torsional forces thereby increase, it is strong to pull the work done effect, and result of use is really, conveniently.

2. be large tracts of land top embedding and fit, to combine effect good with being pulled body 10 for sleeve body 30, do not have the top extremely and close phenomenon not good, that disengaging is skidded when the application of force is pulled.

3. be the embedding of large tracts of land top and fit, non-point type contacts, and does not have skidding extremely, just can not destroy certainly and be pulled body 10 vertical planes 12 formed side angles (embedding angle, top), keeps being pulled the complete of body 10, is conveniently pulled use next time.

Again, above-mentioned structure is to be embodiment with the hexagon grooving, and structural principle is set as tool oblique top embedding face with other polygon grooving groove wall according to this, and reaches the embedding work done of metope formula top, also belongs in the intention category of the present utility model.

Comprehensively above-mentioned, the utility model changes traditional point type top embedding work done, is the embedding work done of face formula top, and improves torsional forces, eliminates to pull more fully and skids, destroys the problem of being pulled body, has practicality and promotes effect.

Claims

1, a kind of tube-in-tube structure of improvement, it comprises a sleeve body, have the polygonal grooving of a perforation on this sleeve body, it is characterized in that: the formed corner of groove wall of grooving is set as outside slightly depression, so that each limit of groove wall has a left oblique top embedding face and a right oblique top embedding face.