CN2178160Y

CN2178160Y - Hexagon and twelve-point kits

Info

Publication number: CN2178160Y
Application number: CN 93241992
Authority: CN
Inventors: 谢智庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-18
Filing date: 1993-10-18
Publication date: 1994-09-28
Anticipated expiration: 2003-10-18

Abstract

The utility model relates to an inner hexagonal and inner dodecagonal external member especially indicates that one end can combine hexagon instrument head or the sleeve of bolt head, hand tools such as box spanner, its side that the inner hexagonal or inner dodecagonal registrate hole that can overlap and establish the instrument head is close to the end angle is established with several and registrate hole axial direction parallel profile of tooth interlock portion to a firm location effect of multiple spot contact is provided.

Description

Inner hexagon and inner twelve angle socket wrench

The utility model relates to a kind of interior hexagonal and interior 12 jiaos of external members, mainly the interior hexagonal of sleeve or the side of 12 jiaos of register holes are located near the end angle, if with several profile of tooth bite,, make the outer-hexagonal tool heads with its fit be able to socket more firmly to increase its snap-in force.

In daily life, the workpiece that people often borrow double offset ring spanner or torque spanner locking to desire screw lock, and torque spanner is of a great variety, and wherein a kind of Yu Yiduan of being is convexly equipped with a quadrangular prism, and this quadrangular prism side also has a steel ball that protrudes slightly; Other establishes a sleeve, and this sleeve one end is provided with interior four jiaos of holes, with the quadrangular prism fit of spanner, and located with the steel ball of dimpling.Hexagonal or interior bihexagonal register hole in the sleeve other end then is provided with, with sheathed bolt head, nut or tool heads, and an end of tool heads is a word bottle opener, or be cross driver, or be hexagon prism, varied, but all establish hexagon prism in the other end, so that sheathed with interior hexagonal or interior 12 jiaos of register holes of sleeve.

And for for the purpose of making things convenient for fit, still leave a little gaps behind the register hole fit of the hexagon prism of tool heads and sleeve, make when sleeve drives the tool heads rotation, can present as shown in Figure 5 state (shown in the figure be example with interior hexagonal register hole), can be an angle between the interior hexagonal register hole 41 of sleeve 40 and the hexagon prism 20 of tool heads, contact and form single-point with the side 411 of register hole 41, make its stressed specified point that concentrates on, add the extreme hardness of sleeve, so after repeatedly using, or the application of force is greater than the hexagon prism 20(or the bolt head of tool heads) material can load the limit time, will make hexagon prism 20 end angles produce wearing and tearing, and when sleeve 40 is desired driven rotary, promptly can produce skidding, so that can't drive tool heads or bolt rotation, also can not bring into play the effect of its application of force screw lock.

Hence one can see that, hexagonal or interior bihexagonal sleeve and double offset ring spanner in the existing tool, though used considerable time, it exists following several defectives always:

1. snap-in force is poor: during owing to the application of force, the end angle and the sleeve of tool heads hexagon prism are single-point and contact, so snap-in force is poor.

2. hexagon prism skids easily: when cooperating the application of force owing to existing sleeve with tool heads and bolt head, it is end angular contact with hexagon prism, when so the many or application of force surpasses the limit that the hexagon prism material can bear when access times, damage making the end angle of hexagon prism, and skid easily, can't be driven screw lock by sleeve.

3. the waste of fund: when the hexagonal end angle of tool heads or bolt head, nut is damaged, so that when skidding no screw lock, promptly can't use, and it is extremely short and spend more money on golden waste on foot to form service life.

For improving the defective of above-mentioned existing sleeve and double offset ring spanner, main purpose of the present utility model is: a kind of interior hexagonal and interior 12 jiaos of external members are provided, mainly with the interior hexagonal of sleeve or the side at the approaching end of interior 12 jiaos of register holes angle, be set as the profile of tooth bite of several and register hole axially parallel, make it form multiple spot and contact, increase its snap-in force with the hexagon prism of tool heads.

A purpose more of the present utility model is: a kind of interior hexagonal and interior 12 jiaos of external members are provided, and when the hexagon prism of tool heads slightly wore and tore, it also can form the state of blocking interlock with bite, and unlikely skidding.

The utility model provides a kind of interior hexagonal and interior 12 jiaos of external members, having in sleeve or double offset ring spanner one end can sheathed hex tool head, the register hole of nut or bolt head, register hole is interior hexagonal or interior 12 jiaos, it is characterized in that: each side of interior hexagonal or interior 12 jiaos of register holes is near end angle place, forms the profile of tooth bite of several and register hole axially parallel.

In the interior hexagonal of external member or interior 12 jiaos of register holes, bite is set by the utility model, can changes the shortcoming of using existing sleeve, and the multiple advantages of deriving, such as:

1. the register hole owing to sleeve contacts with hexagon prism formation multiple spot, so can increase its occlusal contact area and strength, and under the situation that lifting surface area increases, more can not make the end angle of hexagon prism produce wearing and tearing soon because of single-point is stressed, so can prolong its service life, the strength that sleeve conducted can be bestowed hexagon prism reliably simultaneously.

If the hex end angle of parts such as hexagon prism and bolt, nut because of long-term use part when destroyed, it still can be subjected to the blocking of other bite, so still can not skid.

3. prolong the service life owing to parts such as tool heads and bolts, so can reduce the waste of fund, the expenditure that reduces cost.

Further specify design feature of the present utility model below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is an outward appearance profile of the present utility model.

Fig. 2 is part compound section figure of the present utility model.

Fig. 3 is the utility model and the hexagon prism part compound section figure that is fillet.

Fig. 4 is that double offset ring spanner of the present utility model is implemented illustration.

Fig. 5 is existing sleeve and tool heads part compound section figure.

See also shown in Figure 1, with sleeve 10 with interior hexagonal register hole is example, sleeve 10 1 ends are provided with four jiaos of holes 11, the other end is then for having six register holes 12 of holding the interior hexagonal of angles 121 and six sides 122, characteristics of the present utility model are to be: six sides 122 are near end 121 places, angle, be set as the bite 123 of several profile of tooth, bite 123 and sleeve 10, register hole 12 are same axially, and go deep into sleeve 10 inside.

The setting of bite 123, the hexagon prism 20 of head of can make tool is fashionable with sleeve 10 covers, form situation as shown in Figure 2, that is, when the torque spanner application of force makes sleeve 10 rotations, the end angle 21 of the hexagon prism 20 of tool heads will form contacting more than 2 with the bite 123 of register hole 12, and increases snap-in force between the two, and the strength that sleeve 10 is bestowed can more positively reach hexagon prism 20.

And when hexagon prism 20 or parts such as bolt head, nut many because of access times, or bear the excessive application of force, when making end angle 21 slightly be fillet, also be difficult for skidding, and situation as shown in Figure 3, understand by other bite 123 blocking interlocks at the end angle 21 of hexagon prism 20, and can not produce the situation of skidding.

For another shown in Figure 4, the utility model also can be applicable to the interior hexagonal register hole 31 of double offset ring spanner 30 except that Hexagonal jacket in being applied to, and in establishing with profile of tooth bite 32 near the side at each end angle.And the utility model also can be located at interior 12 jiaos of register holes of sleeve or double offset ring spanner.

Claims

1. An inner hexagonal and inner twelve-angle set, which has a fitting hole at one end of the sleeve or ring wrench that can be set with a hexagonal tool head, a nut or a bolt head, and the fitting hole is an inner hexagonal or inner twelve-angle, It is characterized in that: each side of the inner hexagonal or inner twelve-angle fitting hole is close to the end corner, forming several tooth-shaped occlusal parts parallel to the axial direction of the fitting hole.