CN100431798C - Hexagonal wrench used for treating chamfering screw - Google Patents

Abstract

The invention relates to a hex wrench dealing inverted screw, particularly a hex wrench with simple structure and high clamping stability, with one sleeve barrel end inserted into a matching shaft whose edge side forming into a semi circular cross section containing arc slot with a pair of clamps shoring against an elastic part at one side that is tilt up, protruding the edge of the matching shaft. When the matching shaft embedded into the inverted screw hex hole, it can use the protruded clamp stopping the falling of the corresponding angle of the hex hole to prevent the relative slippery to improve the clamping result in order to assist the effective drawing back of the inverted screw.

Description

A kind of die nut of handling chamfering screw

Technical field

The present invention relates to a kind of spanner, specifically, is a kind of die nut that is used to handle chamfering screw.

Background technology

Screw is a kind of part that is used in conjunction with mounting article, it is in response to the needs of environment and different demands, screw head can be divided into the turret head of folder jaw or sleeve use or the inner hexagonal hole that uses for die nut, if and wherein the screw of inner hexagonal hole formula because of long-time repeated rotation or because of factors such as reaction force are excessive, and when causing its inner hexagonal hole corner, can cause general die nut can't withdraw from the problem of screw because of the curved chamfering of wearing and tearing.Because it does not resemble the screw with turret head, design has multiple instrument directly to withdraw from, such as the sleeve barrel tool manufacture method and the finished product thereof of screw " compulsory type get loose " of No. the 584587th, " impact driver and tying means remove device ", the bulletin of TaiWan, China patent announcement I250922 number and announce No. 545340 " the extractor structure of nut and screw " etc.

And for the withdrawing from of the inner hexagonal hole formula screw of general use die nut, then mostly adopting changes the hole on screw, again the way of taking out with drawer.Yet because screw has certain rigidity; its boring processing very is difficult for and trouble; moreover be locked on the way that withdraws from the hole with drawer; regular meeting causes the situation that withdraws from failure because of clip effectively; repetitive operation constantly; even cause screw further to be packed in phenomenon in the screw, and therefore be necessary to develop a kind of easy hand tools, come rapidly and handle effectively and withdraw from the inner hexagonal hole screw of chamfering.

Summary of the invention

Purpose of the present invention just is to overcome the shortcoming that prior art is handled inconvenience and can't effectively be withdrawed from screw, and a kind of simple in structure and die nut that the clip steadiness is high is provided, thereby can be so as to withdrawing from the screw of chamfering rapidly and effectively.

For achieving the above object, the present invention adopts following technical scheme, comes aforementioned purpose of specific implementation and usefulness: a kind of die nut of handling chamfering screw, and it is made up of a sleeve and a cover sympodium; Its middle sleeve is formed with a conjugate foramen corresponding to cover sympodium one end, and a wherein side surface of hexagonal column fit axle is formed with ccontaining arc groove together, the cover sympodium also is formed with a joining section corresponding to sleeve one end, this joining section correspondence is intercalated in the conjugate foramen of sleeve, and the cover sympodium is formed with a profile groove that laterally runs through ccontaining arc groove on joining section; Above-mentioned cover sympodium is provided with a clamping piece in ccontaining arc groove, corresponding arc contact face is formed on this clamping piece bottom, and the cover sympodium is provided with an elastic component in profile groove, and this elastic component is replaced can the resupinate clamping piece of ccontaining relatively arc groove.

Die nut easy operating of the present invention, and clip is firm.When cover sympodium of the present invention embeds the screw inner hexagonal hole of chamfering, can utilize outstanding clamping piece edge card to be butted on the corresponding corner of inner hexagonal hole, prevent to overlap the sympodium rotation of skidding relatively, so can promote its clip effect, thereby can assist the user effectively to withdraw from the screw of chamfering, promote the convenience of operation significantly.

Description of drawings

Fig. 1 is for the perspective exploded view of die nut of the present invention, in order to formation and the relativeness thereof that each main element is described.

Fig. 2 is the three-dimensional appearance schematic diagram of die nut of the present invention, has shown the state after the present invention forms.

Fig. 3 is the sectional perspective cut-away view of die nut of the present invention.

Fig. 4 is the schematic top plan view of die nut of the present invention.

Fig. 5 is the schematic cross-section of die nut of the present invention, so as to the state of explanation elastic component ejection clamping piece.

Fig. 6 is the planar gesture schematic diagram of the actual use of die nut of the present invention.

Fig. 7 is the three-dimensional appearance schematic diagram of another embodiment of die nut of the present invention.

Fig. 8 is the perspective exploded view of an embodiment again of die nut of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.Need to prove that the following stated is preferred embodiment of the present invention only, be not construed as limiting the scope of the present invention, thus all based on spirit of the present invention, doing any type of modification or change, all must be included within the scope of the present invention.

The present invention is that a kind of the processing withdrawed from the die nut of the screw of chamfering, see also Fig. 1 and Fig. 2, it is made up of a sleeve 10 and a cover sympodium 20, its middle sleeve 10 is available for users to utilize ratchet sleeve spanner or open-end wrench or double offset ring spanner etc. to operate, and the present invention is that embodiment describes with the ratchet sleeve spanner mainly.

Detailed formation about preferred embodiment of the present invention, as Fig. 1, Fig. 2 and shown in Figure 3, sleeve 10 is formed with a conjugate foramen 15 corresponding to cover sympodium 20 1 ends, for cover sympodium 20 build-ins, a wherein side surface of hexagonal column fit axle is formed with ccontaining arc groove 21 together in addition, cover sympodium 20 also is formed with a joining section 22 corresponding to sleeve 10 1 ends, this joining section 22 can corresponding be intercalated in the conjugate foramen 15 of sleeve 10, and cover sympodium 20 is formed with a profile groove 23 that laterally runs through ccontaining arc groove 21 on joining section 22, and this profile groove 23 is formed with a containing hole 24 in the bottom surface of a side wherein;

Above-mentioned cover sympodium 20 is provided with a clamping piece 25 in ccontaining arc groove 21, these clamping piece 25 root edges form corresponding arc contact face 26, and clamping piece 25 is formed with a lug 29 in the above-mentioned containing hole of correspondence 24 places, overlap sympodium 20 simultaneously and in profile groove 23 containing holes 24, be provided with an elastic component 27, this elastic component 27 can be replaced lug 29 bottom surfaces (as shown in Figure 4 and Figure 5) of clamping piece 25, clamping piece 25 can upwards be overturn by ccontaining relatively arc groove 21, and cover sympodium 20 is provided with a compression spring 28 (as shown in Figure 4) that stays on 15 of clamping piece 25 and conjugate foramens in ccontaining arc groove 21 back segments, clamping piece 25 can be protruded slightly, so that insert in the inner hexagonal hole of screw.

Organize the die nut of the firm processing chamfering screw of easy operating of formation and clip thus.

As for practice of the present invention, see also Fig. 2, Fig. 5 and Fig. 6, when the inner hexagonal hole 31 of screw 30 can't withdraw from normal die nut because of corner 32 chamferings, die nut of the present invention can be intercalated in the inner hexagonal hole 31 of screw 30 with cover sympodium 20, because the clamping piece 25 of cover sympodium 20 is subjected to the influence of elastic component 27 pushing and pressing, make the lateral margin of clamping piece 25 correspondences can protrude in the periphery that overlaps sympodium 20, and then the corner 32 that utilizes these clamping piece 25 lateral margins to block inner hexagonal hole 31 correspondences, and other abutment face of cover sympodium 20 pastes the corresponding side face that is butted on inner hexagonal hole 31 simultaneously, clip so securely, thereby can withdraw from screw effectively, very convenient in the use, firmly.

An alternative embodiment of the invention, its as shown in Figure 7, sleeve 10 back segments can plug a cross bar, thereby form T type spanner shape, it equally can be for the corner 32 that applies to dismantle inner hexagonal hole 31 screw 30 of chamfering.

Another embodiment of the present invention, it as shown in Figure 8, cover sympodium 20 is formed with a profile groove 23 that laterally runs through ccontaining arc groove 21 on joining section 22, and cover sympodium 20 is provided with an elastic component 27 in profile groove 23, this elastic component 27 can be resisted against the lateral margin of clamping piece 25, and clamping piece 25 can upwards be overturn by ccontaining relatively arc groove 21.

Claims (5)

1, a kind of die nut of handling chamfering screw, it is made up of a sleeve (10) and a cover sympodium (20), it is characterized in that:

Its middle sleeve (10) is formed with a conjugate foramen (15) corresponding to cover sympodium (20) one ends, and a wherein side surface of hexagonal column fit axle (20) is formed with ccontaining arc groove (21) together, cover sympodium (20) also is formed with a joining section (22) corresponding to sleeve (10) one ends, this joining section (22) correspondence is intercalated in the conjugate foramen (15) of sleeve (10), and cover sympodium (20) is formed with a profile groove (23) that laterally runs through ccontaining arc groove (21) on joining section (22);

Above-mentioned cover sympodium (20) is provided with a clamping piece (25) in ccontaining arc groove (21), corresponding arc contact face (26) is formed on this clamping piece (25) bottom, and cover sympodium (20) is provided with an elastic component (27) in profile groove (23), this elastic component (27) is replaced can the resupinate clamping piece of ccontaining relatively arc groove (21) (25).

2, die nut as claimed in claim 1 is characterized in that, described cover sympodium (20) is provided with a compression spring (28) that stays between clamping piece (25) and conjugate foramen (15), clamping piece (25) is protruded slightly in ccontaining arc groove (21) back segment.

3, die nut as claimed in claim 1 is characterized in that, described sleeve (10) has the structure of suitable ratchet sleeve spanner intercalation operation.

4, die nut as claimed in claim 1 is characterized in that, described sleeve (10) back segment laterally is provided with a cross bar, forms T type spanner shape.

5, a kind of die nut as claimed in claim 1, it is characterized in that, described cover sympodium (20) is formed with one for the containing hole (24) that elastic component (27) are set in a side bottom surface of profile groove (23), and a lateral margin of clamping piece (25) is formed with the lug of shoring for elastic component (27) (29).

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