CN206839975U

CN206839975U - Expansion nut

Info

Publication number: CN206839975U
Application number: CN201720436310.7U
Authority: CN
Inventors: 范磊; 张亚勇; 宫金刚; 张绍平
Original assignee: Futaihua Precision Electronic Jiyuan Co Ltd
Current assignee: Fulian Technology Jiyuan Co ltd
Priority date: 2017-04-24
Filing date: 2017-04-24
Publication date: 2018-01-05
Anticipated expiration: 2027-04-24

Abstract

The utility model proposes a kind of expansion nut, for coordinating spanner to dismantle interior angle screw, the interior angle screw is provided with polygon rotating hole, the expansion nut includes sleeve and forms the outer tooth in the side wall of the sleeve, the sleeve is the polygon sleeve being adapted with the rotation hole shape, the sleeve forms drive hole, and the drive hole is used to accommodate the spanner, and the side wall of the sleeve is provided with least one breach to allow the spanner to extrude the sleeve when entering the drive hole and it is outwards expanded.Expansion nut of the present utility model can coordinate spanner to remove the interior angle screw of sliding tooth, and will not damage screw.

Description

Expansion nut

Technical field

A kind of assembly tool, more particularly to a kind of cooperation spanner be the utility model is related to dismantle the expanding screw of interior angle screw It is female.

Background technology

Interior angle screw at present, especially hexagon socket head cap screw have been obtained for being widely applied.However, due to improper use etc. Reason, the nut of interior angle screw easily slide tooth, cause to be difficult to dismantle.The nut of especially countersunk head interior angle screw has been embedded in Mounting surface, more it is difficult to dismantle.The processing generally use electric drill of sliding tooth interior angle screw punch on interior angle screw at present etc. just Formula, this mode are easily damaged screw.

Utility model content

In view of the foregoing, it is necessary to provide a kind of expansion nut that will not damage screw to coordinate spanner to dismantle interior angle spiral shell Silk.

A kind of expansion nut, for coordinating spanner to dismantle interior angle screw, the interior angle screw is provided with polygon rotating hole, and this is swollen Expansion nut includes sleeve and forms the outer tooth in the side wall of the sleeve, and the sleeve is polygon to be adapted with the rotation hole shape Shape sleeve, the sleeve form drive hole, and the drive hole is used to accommodate the spanner, and the side wall of the sleeve is provided with least one breach To allow the spanner to extrude the sleeve when entering the drive hole and it is outwards expanded.

Further, the sleeve includes upper surface, lower surface and connects the upper surface and the side wall of the lower surface, the drive Dynamic hole is connected through the upper surface and the lower surface, the breach with the drive hole.

Further, the quantity of the breach is one, and the breach extends to the lower surface by the upper surface, by the side wall point Into two parts.

Further, the quantity of the breach is multiple, and multiple breach are opened in one end of multiple side walls, and to another End extension.

Further, multiple outer tooth close-packed arrays are on multiple side-wall outer sides for not setting the breach, and are serrated.

Further, each outer tooth extends to the lower surface by the upper surface.

Further, each outer tooth is triangular prism, and the outer tooth includes connected first surface and second surface, at this In triangular prism, the angle formed by the first surface and the side wall is right angle or obtuse angle.

Further, angle is 20 degree~40 degree between the second surface and the first surface.

Further, the interior angle screw is hexagon socket head cap screw, and the rotating hole is hexagonal hole, and the sleeve is hexagonal barrels.

Expansion nut of the present utility model includes sleeve and forms the outer tooth in the side wall of the sleeve.Insert and cover in spanner After cylinder, sleeve is flared out the hole wall for making outer tooth partial insertion rotating hole, when spanner rotates, to drive interior angle screw to rotate. Expansion nut of the present utility model can coordinate spanner to remove the interior angle screw of sliding tooth, and will not damage screw.

Brief description of the drawings

Fig. 1 is the schematic perspective view for the expansion nut that an embodiment of the present utility model provides.

Fig. 2 is the top view of expansion nut shown in Fig. 1.

Fig. 3 is schematic perspective view when expansion nut shown in Fig. 1 uses.

Main element symbol description

Following embodiment will further illustrate the utility model with reference to above-mentioned accompanying drawing.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole realities Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made The every other embodiment obtained, belong to the scope of the utility model protection.

It should be noted that when a component is considered as " connection " another component, it can be directly to separately One component may be simultaneously present the component being centrally located.When a component is considered as " being arranged on " another component, It can be set directly on another component or may be simultaneously present the component being centrally located.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more related Listed Items.

Referring to Fig. 3, the present embodiment provides a kind of expansion nut 100, for coordinating spanner 300 to dismantle interior angle screw 200. In the present embodiment, interior angle screw 200 is hexagon socket head cap screw, and its top is provided with the rotating hole 201 of hexagon.The expansion nut 100 Including sleeve 10 and form the outer tooth 20 in the side wall 15 of the sleeve.Sleeve 10 is more to be adapted with the shape of rotating hole 201 Side shape sleeve, the sleeve 10 are removably placed in the rotating hole 201, and the outer tooth 20 is close to the hole wall of the rotating hole 201, The sleeve 10 forms drive hole 17, and the drive hole 17 is used to accommodate the spanner 300, and the side wall 15 of the sleeve 10 is provided with breach 152 to allow the spanner 300 to extrude the sleeve when entering the drive hole 17 and it is outwards expanded, while makes the outer part of tooth 20 Insert the hole wall 2012.

In the present embodiment, sleeve 10 is hollow hexagonal barrels.It is appreciated that in other embodiments, sleeve 10 can be with Accordingly changed according to the shape of rotating hole 201, such as quadrangle cylinder.

Referring to Fig. 1, sleeve 10 includes upper surface 11, lower surface 13 and connects the upper surface 11 and the six of the lower surface 13 Individual side wall 15.Six side walls 15 are around the drive hole 17 for forming a hexagon.Drive hole 17 runs through the upper surface 11 of sleeve 10 With lower surface 13.Drive hole 17 is used for the spanner 300 for accommodating insertion.In the present embodiment, a side wall 15 is provided with breach 152, The breach 152 extends to lower surface 13 by upper surface 11, and is connected with drive hole 17.The side wall 15 is divided into two by breach 152 Individual part.Sleeve 10 is interference fit with spanner 300, i.e. the cross-sectional area of drive hole 17 is slightly less than the cross-sectional area of spanner 300. After spanner 300 inserts drive hole 17, spanner 300 extrudes sleeve 10 and breach 152 is opened greatly, and six side walls 15 expand laterally Open.It is appreciated that in other embodiments, breach 152 need not be extended to the lower surface 13 by the upper surface 11, as long as sleeve 10 can be with demi-inflation；Multiple breach 152 can also be opened up in multiple side walls 15, as long as multiple side walls 15 still keep phase Even, it is an entirety to make sleeve 10.

Fig. 1 and Fig. 2 are referred to, multiple outer teeth 20 are formed on the lateral surface of side wall 15.Outer tooth 20 is close to rotating hole 201 Hole wall 2012.After spanner 300 inserts drive hole 17, the outer part of tooth 20 is caught in hole wall 2012.With in sleeve 10 with 300 turns of spanner Interior angle screw 200 is driven to rotate when dynamic.

In the present embodiment, multiple outer close-packed arrays of tooth 20 are in wherein five side walls 15 for not setting breach 152, in sawtooth Shape.It is appreciated that in other embodiments, outer tooth 20 can be located therein in one or more side walls 15；Outer tooth 20 can also It is spaced.

In the present embodiment, outer tooth 20 extends to lower surface 13 by upper surface 11.It is appreciated that in other embodiments, outside The length of tooth 20 can also adjust, and make outer tooth 20 to located at the subregion of side wall 15.

Outer tooth 20 is triangular prism, and it includes connected first surface 21 and second surface 23.In the present embodiment, first surface 21 vertical place side walls 15.Angle is 20 degree~40 degree between second surface 23 and first surface 21, it is preferable that second surface 23 Angle is 30 degree between first surface 21.Counterclockwise, second surface 23 is located at the front of first surface 21, so that When rotate counterclockwise spanner 300 is to dismantle interior angle screw 200, thrust F is applied to hole wall by first surface 21₁Make interior angle screw 200 rotate；When rotating clockwise spanner 300, second surface 23 is compressed power F by hole wall 2012₂.Compress power F₂It is vertical to make For second surface 23, and the first component F in the vertical direction of first surface 21 can be further broken into₂₁And parallel first surface 21 The second component F in direction₂₂.In the second component F₂₂After reaching certain numerical value, outer tooth 20 is pushed out hole wall 2012.

It is appreciated that in other embodiments, it can also be obtuse angle that the angle that first surface 21 is formed with the side wall 15, which is,.

Fig. 2 and Fig. 3 are referred to, when dismantling interior angle screw 200, expansion nut 100 is put into rotating hole 201.Afterwards Spanner 300 is inserted in drive hole 17, six side walls 15 is opened laterally, while the part of outer tooth 20 is caught in hole wall 2012. Rotate counterclockwise spanner 300, rotate sleeve 10.First surface 21 applies thrust F to hole wall₁Rotate interior angle screw 200.

It is after completing dismounting interior angle screw 200, interior angle screw 200 is fixed using instrument (such as pliers, not shown).Clockwise Rotating spanner 300, second surface 23 is set to be compressed power F by hole wall 2012₂.The strength of rotating spanner 300 is increased, makes to compress power F₂And the second component F₂₂Increase, outer tooth 20 is pushed out hole wall 2012.So that expansion nut 100 and interior angle screw 200 to be divided From.

Expansion nut 100 of the present utility model includes sleeve 10 and forms the outer tooth 20 in the side wall 15 of sleeve 10. After the insertion sleeve 10 of spanner 300, sleeve 10 is flared out the hole wall 2012 for making the outer partial insertion rotating hole 201 of tooth 20, to pull When hand 300 rotates, interior angle screw 200 is driven to rotate.Expansion nut 100 of the present utility model can coordinate spanner 300 to remove cunning The interior angle screw of tooth, and screw will not be damaged.

In addition, those skilled in the art can also do other changes in the utility model spirit, certainly, these are according to this reality The change made of new spirit, it should all be included in the utility model scope claimed.

Claims

1. a kind of expansion nut, for coordinating spanner to dismantle interior angle screw, the interior angle screw is provided with polygon rotating hole, its feature It is：The expansion nut includes sleeve and forms the outer tooth in the side wall of the sleeve, and the sleeve is and the rotation hole shape phase The polygon sleeve of adaptation, the sleeve form drive hole, and the drive hole is used to accommodate the spanner, and the side wall of the sleeve is provided with extremely Lack a breach to allow the spanner to extrude the sleeve when entering the drive hole and it is outwards expanded.

2. expansion nut as claimed in claim 1, it is characterised in that：The sleeve includes upper surface, lower surface and connected on this End face and the side wall of the lower surface, the drive hole are connected through the upper surface and the lower surface, the breach with the drive hole.

3. expansion nut as claimed in claim 2, it is characterised in that：The quantity of the breach is one, and the breach is by the upper end Face extends to the lower surface, and the side wall is divided into two parts.

4. expansion nut as claimed in claim 2, it is characterised in that：The quantity of the breach is multiple, and multiple breach open up Extend in one end of multiple side walls, and to the other end.

5. expansion nut as claimed in claim 2, it is characterised in that：Multiple outer tooth close-packed arrays do not set the breach in multiple The side-wall outer side on, and be serrated.

6. expansion nut as claimed in claim 5, it is characterised in that：Each outer tooth extends to the lower end by the upper surface Face.

7. expansion nut as claimed in claim 6, it is characterised in that：Each outer tooth is triangular prism, and the outer tooth includes phase First surface and second surface even, by the first surface with angle that the side wall is formed it is right angle or blunt in the triangular prism Angle.

8. expansion nut as claimed in claim 7, it is characterised in that：Angle is 20 between the second surface and the first surface ~40 degree of degree.

9. expansion nut as claimed in claim 1, it is characterised in that：The interior angle screw is hexagon socket head cap screw, and the rotating hole is Hexagonal hole, the sleeve are hexagonal barrels.