CN2291994Y - Hexagon and twelve-point sockets - Google Patents

Abstract

The utility model relates to an inner hexagonal and interior twelve angle sleeve, it mainly be on each inner edge in inner hexagonal or interior twelve angle registrate portion registrate hole, be formed with and supply with the arcuation card flange that the work piece head blocked each other and supports, so can use and reduce telescopic spiral angle and with the contact dead angle between the work piece head to avoid the production of phenomenon of skidding, and can improve telescopic performance.

Description

Hexagon and twelve-point sockets

The utility model relates to an inner hexagon and inner twelve-angle sleeve.

Generally, in the assembly of machines or objects, it is usually necessary to use a socket wrench to lock the object to be screwed, while the traditional sockets 40 and 50 are generally shown in Figures 3 to 6, which are mainly at one end. A four-corner perforation 42, 52 is recessed, which can be used for the four-corner posts protruding on a wrench to engage with each other, so that the sleeves 40, 50 can rotate with the wrench, and the other ends of the sleeves 40, 50 Then form one and be hexagonal or 12 angles or be the fitting part 44,54 of quincunx shape fitting hole 46,56, can be provided with the hexagonal head on workpieces such as sleeve bolt, nut or screwdriver, make workpiece follow along The sleeves 40, 50 rotate to achieve the effect of screwing the object.

The fitting parts 44, 54 of the traditional sleeves 40, 50 are mainly provided with a slightly arc-shaped locking protrusion 48, 58 in each fitting hole 46, 56, and each locking protrusion 48, 58 Between 58, gaps 49 and 59 are recessed, wherein the arc-shaped curved surfaces between the gaps 49 and the protrusions 48 can be continuously wavy, so that the fitting holes 46 of the sleeve 40 are formed roughly like plum blossoms. shape, so that when the fitting parts 44, 54 are sleeved on the heads of workpieces such as bolts and nuts, the protrusions 48, 58 can be locked against the heads of the workpieces to drive the workpieces to rotate to lock the objects .

Yet although this kind of traditional sleeve 40,50 structure can reach the certain efficiency that drives workpiece to rotate, it still has following shortcoming:

(1) When the sleeves 40, 50 want to drive the workpiece to rotate, they need to use the card protrusions 48, 58 to be locked against the head of the workpiece. When the sleeves 40, 50 are set on the workpiece, they need to be rotated one At the rear of the corner, the protrusions 48, 58 and the workpiece can be locked against each other to drive it to rotate. However, the fitting holes 46, 56 of the traditional sleeves 40, 50 often need to be rotated by a large rotation angle before they can be rotated. The locking protrusions 48, 58 can be smoothly locked against the workpiece, so that the sleeves 40, 50 often idle when in use, causing inconvenience in use.

(2) When this kind of traditional sleeve 40, 50 fits with workpieces such as regular hexagonal bolts and nuts, although it can achieve a certain clamping effect between the clamping protrusions 48, 58 and the workpiece, if the workpiece When there is an arc angle head, then slippage is likely to occur between the clamping protrusions 48, 58 and the arc head of the workpiece, causing the sleeves 40, 50 to fail to effectively drive the rotation of the workpiece, and the sleeves 40, 50 are lost. There are motion effects.

Therefore, in view of the shortcomings in the structure and use of the traditional inner hexagon and inner twelve angle sockets, the creators and designers have finally developed the utility model that can improve the shortcomings of the traditional socket through continuous research and testing.

The purpose of the utility model is to provide an inner hexagon and inner twelve angle sleeve. It can reduce the rotation angle of the sleeve and the contact dead angle with the workpiece head, and avoid the occurrence of slippage, so as to improve the use efficiency of the sleeve.

The technical scheme of the utility model is:

An inner hexagonal and inner twelve-angle sleeve is characterized in that it is provided with an arc-shaped locking flange on each inner edge surface of the fitting hole of the inner hexagonal or twelve-angle hole of the sleeve. , and each card flange is recessed to form an arc-shaped gap groove, and the relationship between the distance (B) between the fitting hole and the top end of the card flange on both sides and the length (A) of the workpiece head conforms to the following formula:

B＝A·(1-K)

Wherein 2.5%≤K≤11.5%.

Compared with the prior art, the utility model has obvious advantages and positive effects. It can be seen from the above technical solutions that because the utility model can use the locking flange 18 formed on the inner hexagonal or twelve-angle fitting hole 16 to engage more closely with the workpiece head 20, so the sleeve can be reduced. 10 drives the rotation angle of the workpiece, avoids the slipping phenomenon between the fitting hole 16 and the workpiece head 20, eliminates the dead angle when the sleeve 10 rotates, and improves the use effect of the sleeve 10.

Below in conjunction with accompanying drawing, further illustrate the specific structure feature and purpose of the present utility model.

Brief description of the drawings:

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

Fig. 2 is a schematic front view of an embodiment of the utility model.

Fig. 3 is a schematic perspective view of a three-dimensional appearance of a conventional sleeve.

Fig. 4 is a schematic front view of a conventional sleeve.

FIG. 5 is a schematic perspective view of another traditional sleeve in a three-dimensional appearance.

Fig. 6 is a schematic front view of another conventional sleeve.

Please refer to Fig. 1 , which is a schematic diagram of a three-dimensional appearance of the utility model. It can be seen from the figure that one end of the sleeve 10 is perforated with a four-corner perforation 12 that engages with a wrench, and the other end of the sleeve 10 is Then form a fitting part 14, a fitting hole 16 that is basically hexagonal or twelve corners is perforated in the center of the fitting part 14, and each inner edge surface of the hexagonal or twelve corner holes in the fitting hole 16 is An arc-shaped card flange 18 is protruded inwardly, and an arc-shaped gap groove 19 is recessed between each card flange 18 .

In this way, when the fitting holes 16 of the sleeve 10 are inserted into the heads 20 of workpieces such as bolts, nuts, drivers, etc., please refer to FIG. The part 20 enables the workpiece to be rotated by the drive of the sleeve 10, so as to produce a screw fastening effect on the object.

This designer finds after continuous research and test that if the distance (B) at the top of the flange 16 on the opposite sides and the length (A) of the workpiece head 20 (herein A is the longest distance of the workpiece head , that is, the distance between two diagonal arcs, as shown in Figure 2), when the relationship is as follows,

B＝A·(1-K)

Where 2.5%≤K≤11.5%

Then the fitting hole 16 can be more easily locked against the head 20, thereby reducing the rotation angle of the head 20 driven by the sleeve 10, making it easier for the sleeve 10 to drive the workpiece to rotate, and improving the convenience of the use of the sleeve 10. It can also make the engagement between the fitting hole 16 and the head 20 more tight, thereby avoiding the slipping phenomenon between the fitting hole 16 and the head 20, especially the sleeve 10 and the workpiece head with rounded corners. When the parts 20 are fitted together, the phenomenon of slipping between the card flange 18 and the head 20 can be avoided more reliably, and the dead angle when the sleeve 10 is rotated can be eliminated.

Claims (1)

1. An inner hexagonal and inner twelve-angle sleeve, which is characterized in that it protrudes inward to form an arc-shaped clip on each inner edge surface of the hexagonal or twelve-angle inner hole of the sleeve. flange, and each card flange is recessed to form an arc-shaped gap groove, and the relationship between the distance (B) between the fitting hole and the top of the card flange on both sides and the length of the workpiece head (A) conforms to the following formula : B＝A·(1-K) Wherein 2.5%≤K≤11.5%.

Images