CN2291994Y

CN2291994Y - Hexagon and twelve-corner socket spanner

Info

Publication number: CN2291994Y
Application number: CN 97201451
Authority: CN
Inventors: 谢智庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-02-12
Filing date: 1997-02-12
Publication date: 1998-09-23
Anticipated expiration: 2007-02-12

Abstract

The utility model relates to an internal hexagon and twelve-corner sleeve barrel. An arc-shaped clamping flange which is mutually clamped and bunted with the head of a work piece on each inner edge of sleeve combined holes of sleeve combined parts of the internal hexagon and twelve-corner, and therefore, the utility model can reduce a swing angle of the sleeve barrel and a dead angle contacted with the head of a work piece, avoid slip generating, and improve utilization efficiency for the sleeve barrel.

Description

Interior hexagonal and interior 12 jiaos of sleeves

The utility model relates to a kind of interior hexagonal and interior 12 jiaos of sleeves.

General in the assembling of machine or article, usually need utilize a box spanner to lock and desire the article of screw lock, and general traditional sleeve 40,50 is as shown in Fig. 3 to 6, it mainly is that Yu Yiduan is concaved with one or four jiaos of perforation 42,52, can engage mutually for the quadrangular prism that is convexly equipped with on the spanner, and allow sleeve 40,50 are able to pulling and rotate with spanner, in addition in sleeve 40,50 in addition end then is formed with one and is hexagonal or 12 jiaos or is plum blossom shape register hole 46,56 fit portion 44,54, can supply sheathed bolt, be hexagonal head on the workpiece such as nut or bottle opener, make workpiece with sleeve 40,50 rotate, and reach the effect of the solid object of spiral shell.

Again the fit portion 44,54 of conventional sleeve 40,50 its mainly be in register hole 46,56, respectively to convex with the card protuberance 48,58 that the cross section slightly is circular arc, then respectively be concaved with clearance portion 49,59 in each 48,58 of protuberance of card, wherein the arc-shaped surface of clearance portion 49 and 48 of protuberances of card can be continuously wavy mutually, and the register hole 46 that makes sleeve 40 forms roughly the shape as plum blossom, so when fit portion 44,54 is sheathed on the head of workpiece such as bolt and nut, but the head of mat card protuberance 48,58 and workpiece fastens mutually, rotates with the screw lock object and drive workpiece.

Though yet traditional sleeve 40,50 structures of this kind can reach the certain usefulness that drives the workpiece rotation, it still has following shortcoming:

When (1) driving the workpiece rotation because of sleeve 40,50 desires, need the head of mat card protuberance 48,58 and workpiece to fasten mutually, when being sheathed on sleeve 40,50 on the workpiece, need to rotate and card protuberance 48,58 and workpiece to be fastened mutually behind the swing angle and drive its rotation, and the register hole 46,56 of the traditional sleeve 40,50 of this kind, after often needing to rotate a bigger swing angle, can make card protuberance 48,58 smoothly and workpiece fasten, so just, can cause sleeve 40,50 in use, often there is the phenomenon of idle running to produce, causes the inconvenience when using.

(2) this kind conventional sleeve 40,50 with workpiece such as the bolt that is positive hexagonal, nut overlap mutually fashionable, though can allow and reach certain effect that fastens between card protuberance 48,58 and workpiece, but if this workpiece is when having the arc chord angle head, then block between protuberance 48,58 and workpiece circular arc head and then be easy to generate the phenomenon of skidding, cause effectively transmission workpiece rotation of sleeve 40,50, and lose sleeve 40,50 due start effects.

So this creation designer is special through continuous research and experiment in view of the shortcoming in hexagonal in the tradition and interior 12 jiaos of tube-in-tube structures and the use, develops finally the utility model that can improve the conventional sleeve shortcoming.

The purpose of this utility model is to provide a kind of interior hexagonal and interior 12 jiaos of sleeves.Can reduce sleeve swing angle and with the workpiece head between contact the dead angle, and avoid the generation of skidding, with raising sleeve effective utilization.

The technical solution of the utility model is:

Hexagonal and interior 12 jiaos of sleeves in a kind of, it is characterized in that: it is on each inner edge surface of register hole in the interior hexagonal of sleeve or 12 jiaos of holes, all be convexly equipped with the card flange that is formed with an arcuation to the inside, and respectively block respectively to be arranged with between flange and form an arcuation clearance groove, wherein the distance (B) of the relative both sides of register hole card flange top and the relation between workpiece head length (A) meet following formula:

B＝A·(1-K)

2.5%≤K≤11.5% wherein.

The utility model compared with the prior art advantage and good effect is very obvious.By above technical scheme as can be known, since in the utility model can utilize on hexagonal or the 12 jiaos of register holes 16 formed card flange 18 and 20 on workpiece head more closely fasten fit, so can reduce the swing angle that sleeve 10 drives the workpiece rotation, avoid the skidding of 20 on register hole 16 and workpiece head, dead angle when eliminating sleeve 10 rotations, and improve the effect that sleeve 10 uses.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a three-dimensional appearance cross-sectional schematic of the present utility model.

Fig. 2 is the front elevational schematic of the utility model embodiment.

Fig. 3 is the three-dimensional appearance cross-sectional schematic of conventional sleeve.

Fig. 4 is the front elevational schematic of conventional sleeve.

Fig. 5 is the three-dimensional appearance cross-sectional schematic of another conventional sleeve.

Fig. 6 is the front elevational schematic of another conventional sleeve.

Please referring to Fig. 1, it is a three-dimensional appearance cross-sectional schematic of the present utility model, by seeing among the figure, be equipped with four jiaos of perforation 12 that engage mutually with spanner in an end of sleeve 10, end in addition in sleeve 10 then is formed with a fit portion 14, be equipped with one in 14 central authorities of fit portion and be hexagonal or bihexagonal register hole 16 substantially, and in register hole 16 each inner edge surface in hexagonal or 12 jiaos of holes, all be convexly equipped with the card flange 18 that is formed with an arcuation to the inside, each blocks 18 of flanges and then respectively is arranged with the clearance groove 19 that is formed with an arcuation.

So when the register hole 16 with sleeve 10 is inserted in the head 20 of workpiece such as bolt, nut, bottle opener, please referring to Fig. 2, can utilize the flange 18 that respectively blocks of register hole 16 to fasten head 20, and the drive that makes workpiece be able to mat sleeve 10 is rotated, so that object is produced the solid effect of spiral shell in workpiece.

This design people is found through behind the continuous research and experiment, if (A is the longest distance of workpiece head to the distance (B) of both sides card flange 16 tops with workpiece head 20 length (A) relatively herein, i.e. distance between two diagonal angle circular arcs is when relation as shown in Figure 2) is following formula

B＝A·(1-K)

2.5%≤K≤11.5% wherein

Can allow then register hole 16 is easier to fasten mutually with head 20, can use and reduce the swing angle that sleeve 10 drives head 20, make sleeve 10 easier drive workpiece rotations, improve the convenience that sleeve 10 uses, also can allow fastening of 20 on register hole 16 and head more tight in addition, and can use the skidding of avoiding 20 on register hole 16 and head, especially the workpiece head 20 of sleeve 10 and tool circular arc corner be nested fashionable, more can avoid 20 phenomenons of skidding of card flange 18 and head really, and the dead angle when eliminating sleeve 10 and rotating.

Claims

1, a kind of interior hexagonal and interior 12 jiaos of sleeves, it is characterized in that: it is on each inner edge surface of register hole in the interior hexagonal of sleeve or 12 jiaos of holes, all be convexly equipped with the card flange that is formed with an arcuation to the inside, and respectively block respectively to be arranged with between flange and form an arcuation clearance groove, wherein the distance (B) of the relative both sides of register hole card flange top and the relation between workpiece head length (A) meet following formula:

B＝A·(1-K)

2.5%≤K≤11.5% wherein.