CN204664109U - Extrusion assembly nut connecting pair - Google Patents
Extrusion assembly nut connecting pair Download PDFInfo
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- CN204664109U CN204664109U CN201520354040.6U CN201520354040U CN204664109U CN 204664109 U CN204664109 U CN 204664109U CN 201520354040 U CN201520354040 U CN 201520354040U CN 204664109 U CN204664109 U CN 204664109U
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- nut body
- auxiliary connection
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- 238000001125 extrusion Methods 0.000 title abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
An extrusion assembly nut connecting pair comprises an extrusion assembly nut and an external thread fastener, wherein the extrusion assembly nut comprises a nut body, the nut body is a cylinder, a through hole is formed in the center of the nut body, the inner surface of the through hole is a smooth surface, the diameter of the through hole is larger than the external thread major diameter matched with the external thread fastener, and a flange surface with a wrenching structure is arranged at one end of a binding surface of the nut body; during assembly, the external thread fastener penetrates into an inner hole of the connecting piece, the extrusion assembly nut is sleeved on the tail portion of the external thread fastener and then abuts against the outer end face of the nut body, the tail portion of the external thread fastener is pulled to a designed clamping force, and meanwhile the outer circular face of the nut body is extruded to enable the outer circular face of the nut body to generate integral plastic deformation inwards, so that the inner surface of the through hole of the nut and the external thread tooth form of the external thread fastener are completely meshed to form an internal thread. The anti-loosening device is good in anti-loosening performance, simple in structure, low in cost, easy to assemble, easy to disassemble and capable of being repeatedly used.
Description
Technical field
The utility model relates to a kind of threaded connection pair, particularly relates to a kind of press fit nut auxiliary connection, is mainly applicable to improve auxiliary connection anti-loosening property.
Background technique
At present, thread connection technology has become most widely used assembly connection technology in automobile and the connection of various machinery, carry the fastening important task that to be linked and packed by various part, and once the situation of getting loose appears in threaded fastener, assembling will be caused to lose efficacy, jeopardize the normal work of the assemblies such as automobile and machinery.For the automobile of running at high speed, aircraft, on it, the important screw of the key position such as motor, transmission system is once in use get loose the serious consequence that phenomenon will cause machine (car) to ruin people to die.Therefore for the machinery of the high speed operations such as such as automobile, the locking unfailing performance improving its threaded fastener is very required and necessary.
The maximum threaded connection pair form of current application is that (screw) – nut connects bolt, but its internal and external threads matching part of these threaded connection pairs is Spielpassung, anti-loosening property is poor, once the decay of auxiliary connection assembling clamping force, it is just very easy to occur the problem lost efficacy that gets loose in-service.In order to solve the problem that conventional stud-nut thread auxiliary connection easily gets loose, occur that a kind of pulling rivet connects new product in recent years, pulling rivet is made up of a pulling rivet and the plasticity collar, make it to produce plastic deformation by the extruding collar cylindrical during assembling, therefore this new Connecting format has the advantages that not easily get loose, but because pulling rivet head and the collar are all circular, there is no twisting structure, pulling rivet bar is engaged position with the collar is simultaneously several parallel circular grooves, cause staking auxiliary connection that the mode of unscrewing of conventional stud auxiliary connection can not be adopted to dismantle, reusable performance is not possessed yet, because which limit its application on automobile product.
Chinese patent Authorization Notice No. is CN202926831U, authorized announcement date is the anti-loose structure that the model utility on May 8th, 2013 discloses a kind of threaded connection pair, it comprises nut, Cock screw, locking ring, bolt, described locking ring loads in nut, with Cock screw, nut is connected with locking ring, described nut and bolt carry out being threaded fastening, carry out embedding tightly locking in the groove of described locking ring stud bolt afterbody, described nut one end is provided with screw thread, the other end is provided with unthreaded hole band seam, and the afterbody of described Cock screw is provided with straight groove.Although it is locking that this model utility can compress locking ring by Cock screw, it still has following defect:
First, this model utility does not ensure the measure that Cock screw does not get loose and structure, once Cock screw gets loose, its anti-loosing effect is not also present in, and therefore, this model utility anti-loosening property is poor;
Secondly, the bolt of this model utility threaded connection pair, nut are special special purpose parts, and manufacture cost is higher, auxiliary connection also add locking ring, Cock screw, complex structure simultaneously, and auxiliary connection cost is higher, and assemble rundown process complexity, efficiency of assembling is very low.The occasion compared with major thread specification can only be applied to by its structural limitations.
Summary of the invention
The purpose of this utility model be overcome that the anti-loosening property existed in prior art is poor, complex structure and the high defect of cost and problem, provide that a kind of anti-loosening property is good, structure simple and the press fit nut auxiliary connection that cost is low.
For realizing above object, technical solution of the present utility model is: a kind of press fit nut auxiliary connection, comprises press fit nut, threaded male fastener, and described press fit nut comprises nut body;
Described nut body is cylindrical body, and the center of nut body is provided with through hole, and the internal surface of through hole is smooth surface, and the diameter of through hole is greater than the large footpath of outside thread of threaded male fastener, and one end of nut body is provided with nut flange face.
The smallest radial size in described nut flange face is more than or equal to the outside dimension of nut body.
The structure in described nut flange face is quadrangle, hexagon, dodecagon, hexagonal flower shape or flat.
Described threaded male fastener is bolt, screw or stud.
The diameter of described through hole is than the large footpath of the outside thread of threaded male fastener large 0.05mm – 0.15mm.
The material of described press fit nut is low carbon steel, alloyed steel, stainless steel or aluminum alloy.
Compared with prior art, the beneficial effects of the utility model are:
1, because the auxiliary connection structure in a kind of press fit nut of the utility model auxiliary connection comprises press fit nut and threaded male fastener, structure is simple, the center of described nut body is provided with through hole, the internal surface of through hole is smooth surface, the diameter of through hole is greater than the large footpath of outside thread of coupling threaded male fastener, when press fit nut auxiliary connection assembles, press fit nut is extruded bulk deformation, the internal surface of through hole is engaged completely with the outside thread tooth form of threaded male fastener, realize screw connection point blind-mate, the anti-loosening property of auxiliary connection can be improved greatly, simultaneously, internal surface due to through hole is smooth surface, not pre-threaded hole, low cost of manufacture.Therefore, the utility model anti-loosening property is good, and structure is simple, cost is low.
2, because the press fit nut auxiliary connection in a kind of press fit nut of the utility model auxiliary connection is when assembling, first threaded male fastener is penetrated successively a link, in the endoporus of No. two links, on the afterbody again press fit nut sleeve passed in threaded male fastener, then at A, B both direction props up the exterior edge face of nut body, C direction is held threaded male fastener afterbody, make it to produce overall plastic deformation at the periphery of circumference lateral extrusion nut body, the internal surface of through hole is made to be engaged to form internal thread completely with the outside thread tooth form of threaded male fastener, not only achieve screw connection point blind-mate, improve the anti-loosening property of auxiliary connection, and whole process only needs just can complete whole assembly manipulation in press fit nut one end, assembling is simple, save labour turnover.Therefore, the utility model anti-loosening property good, be easy to assembling, cost is low.
3, because one end of the nut body in a kind of press fit nut of the utility model auxiliary connection is provided with nut flange face, and nut flange face is quadrangle, hexagon, dodecagon, hexagonal flower shape or flat etc. can twisting structures, when press fit nut auxiliary connection assembled rear needs dismantle time, modal threaded fastener twisting instrument can be utilized, dismantled by the head of twisting threaded male fastener and nut flange face, and after the dismounting of press fit nut auxiliary connection, the nut of standard can also be equipped with under abnormal condition, possesses good applicability, can reuse.Therefore, the utility model is quick detachable, reusable.
Accompanying drawing explanation
Fig. 1 is erection drawing of the present utility model.
Fig. 2 is the structural representation of press fit nut in the utility model.
Fig. 3 is the plan view of press fit nut in the utility model.
In figure: press fit nut 1, nut body 11, through hole 12, nut flange face 13, exterior edge face 14, threaded male fastener 2, head 21, left side 42, link No. 41, two, 4, No. two right sides, No. 32, two, left side, afterbody 22, link No. 31, one, 3, right side.
Embodiment
Illustrate below in conjunction with accompanying drawing and with embodiment, the utility model to be described in further detail.
See Fig. 1 to Fig. 3, a kind of press fit nut auxiliary connection, comprises press fit nut 1, threaded male fastener 2, and described press fit nut 1 comprises nut body 11;
Described nut body 11 is cylindrical body, and the center of nut body 11 is provided with through hole 12, and the internal surface of through hole 12 is smooth surface, and the diameter of through hole 12 is greater than the large footpath of outside thread of threaded male fastener 2, and one end of nut body 11 is provided with nut flange face 13.
The smallest radial size in described nut flange face 13 is more than or equal to the outside dimension of nut body 11.
The structure in described nut flange face 13 is quadrangle, hexagon, dodecagon, hexagonal flower shape or flat.
Described threaded male fastener 2 is bolt, screw or stud.
The diameter of described through hole 12 is than the large footpath of the outside thread of threaded male fastener 2 large 0.05mm – 0.15mm.
The material of described press fit nut 1 is low carbon steel, alloyed steel, stainless steel or aluminum alloy.
An assembly method for press fit nut auxiliary connection, described assembly method comprises the following steps successively:
First threaded male fastener 2 is penetrated successively in the endoporus of a link 3, in the endoporus of No. two links 4, until fit in a right side 31 of the left side of threaded male fastener 2 head 21 and a link 3, fit in a left side 32 of a link 3 and No. two right sides 41 of No. two links 4, the afterbody 22 of threaded male fastener 2 passes No. two left sides 42 of No. two links 4, again press fit nut 1 is enclosed within the afterbody 22 of threaded male fastener 2, so that fit in nut flange face 13 and No. two left sides 42, then at A, B both direction props up the exterior edge face 14 of the nut body 11 relative with nut flange face 13, and on C direction, hold the afterbody 22 of threaded male fastener 2, so that fit completely in left side and a right side 31 of head 21, fit completely in a left side 32 and No. two right sides 41, fit completely with flanged surface 13 in No. two left sides 42, simultaneously, make it inwardly to produce overall plastic deformation from the periphery of circumference lateral extrusion nut body 11, the internal surface of through hole 12 is made to be engaged to form internal thread completely with the outside thread tooth form of threaded male fastener 2, now, described assembly method terminates.
C direction is strained afterbody 22 to the auxiliary connection clamping force desired value of threaded male fastener 2, and screw thread specification, the strength grade of auxiliary connection clamping force desired value and threaded male fastener 2 are relevant.
When described press fit nut auxiliary connection assembled rear needs dismantle time, dismantled by the head 21 of twisting threaded male fastener 2 and nut flange face 13.
Principle of the present utility model is described as follows:
1, anti-loosening property is good
Because the center of the nut body 11 in a kind of press fit nut of the design auxiliary connection is provided with through hole 12, the internal surface of through hole 12 is smooth surface, the diameter of through hole 12 is greater than the large footpath of outside thread of threaded male fastener, when press fit nut auxiliary connection is when assembling, first threaded male fastener 2 is penetrated a link 3 successively, in the endoporus of No. two links 4, again press fit nut 1 is enclosed within afterbody 22 that threaded male fastener 2 passes, then staking assembly equipment is adopted, at A, B both direction prop up the exterior edge face 14 of nut body 11 and on C direction, hold threaded male fastener 2 afterbody 22 to assembling clamping force desired value, make it to produce overall plastic deformation at the periphery of circumference lateral extrusion nut body 11 simultaneously, the internal surface of through hole 12 is made to be engaged to form internal thread completely with the outside thread tooth form of threaded male fastener 2, the assembly equipment of pulling rivet is adopted to carry out straining rear press fit, the accurate control to auxiliary connection assembling clamping force can be realized, drastically increase the assembly quality of auxiliary connection, described press fit nut 1 adopts low carbon steel, alloyed steel, stainless steel, the moulding good material such as aluminum alloy, so that during assembling press fit nut 1 by monolithic extruded distortion, thus the internal surface of through hole 12 is engaged completely with the outside thread tooth form of threaded male fastener 2, achieve screw connection point blind-mate, greatly can improve the anti-loosening property of auxiliary connection.Therefore, the design's anti-loosening property is good.
2, structure is simple, cost is low
Because the auxiliary connection structure in a kind of press fit nut of the design auxiliary connection only comprises press fit nut 1 and threaded male fastener 2, structure is simple, and the center of described nut body 11 is provided with through hole 12, and the internal surface of through hole 12 is smooth surface, not pre-threaded hole, low cost of manufacture.In addition, described press fit nut 1 can mate with the threaded male fastener such as the bolt of existing standard, screw, stud and be connected, and the threaded fastener of the existing maturation of maximized employing, reduces the cost that fastening piece connects.When press fit nut auxiliary connection assembles, first threaded male fastener 2 is penetrated a link 3 successively, in the endoporus of No. two links 4, again press fit nut 1 is enclosed within afterbody 22 that threaded male fastener 2 passes, then the assembly equipment of pulling rivet is adopted, at A, B both direction prop up the exterior edge face 14 of nut body 11 and on C direction, hold threaded male fastener 2 afterbody 22 to assembling clamping force desired value, make it to produce plastic deformation at the periphery of circumference lateral extrusion nut body 11 simultaneously, the internal surface of through hole 12 is made to be engaged to form internal thread completely with the outside thread tooth form of threaded male fastener 2, whole process only needs just can complete whole assembly manipulation in press fit nut 1 one end, assembling is simple, save labour turnover.Therefore, the design's structure is simple, cost is low.
3, quick detachable, reusable
Because one end of the nut body 11 in a kind of press fit nut of the design auxiliary connection is provided with nut flange face 13, and nut flange face 13 be quadrangle, hexagon, dodecagon, hexagonal flower shape or flat etc. can twisting structures, the threaded male fastener 2 of mating with press fit nut 1 have employed the standard piece such as standard bolt common at present, screw, stud, and its head of these threaded male fastener all has the structure can implementing twisting.When press fit nut auxiliary connection assembled rear needs dismantle time, the modal threaded fastener twisting such as spanner, sleeve instrument can be utilized, dismantled by the head of twisting threaded male fastener and nut flange face, convenient disassembly, and after the dismounting of press fit nut auxiliary connection, the nut of standard can also be equipped with under abnormal condition, possess good applicability, can reuse.Therefore, the design is quick detachable, reusable.
Embodiment:
See Fig. 1 to Fig. 3, a kind of press fit nut auxiliary connection, comprises press fit nut 1, threaded male fastener 2, and described press fit nut 1 comprises nut body 11; Described nut body 11 is cylindrical body, the center of nut body 11 is provided with through hole 12, the internal surface of through hole 12 is smooth surface, the diameter of through hole 12 is greater than the large footpath of outside thread of threaded male fastener 2, one end of nut body 11 is provided with nut flange face 13, and the structure in nut flange face 13 is quadrangle, hexagon, dodecagon, hexagonal flower shape or flat.
By such scheme, a kind of assembly method of press fit nut auxiliary connection, described assembly method comprises the following steps successively: first threaded male fastener 2 penetrated in the endoporus of a link 3 successively, in the endoporus of No. two links 4, until fit in a right side 31 of the left side of threaded male fastener 2 head 21 and a link 3, fit in a left side 32 of a link 3 and No. two right sides 41 of No. two links 4, the afterbody 22 of threaded male fastener 2 passes No. two left sides 42 of No. two links 4, again press fit nut 1 is enclosed within the afterbody 22 of threaded male fastener 2, so that fit in nut flange face 13 and No. two left sides 42, then at A, B both direction props up the exterior edge face 14 of the nut body 11 relative with flanged surface 13, and on C direction, hold the afterbody 22 of threaded male fastener 2, so that fit completely in left side and a right side 31 of head 21, fit completely in a left side 32 and No. two right sides 41, fit completely with flanged surface 13 in No. two left sides 42, simultaneously, make it inwardly to produce overall plastic deformation from the periphery of circumference lateral extrusion nut body 11, the internal surface of through hole 12 is made to be engaged to form internal thread completely with the outside thread tooth form of threaded male fastener 2, now, described assembly method terminates, when described press fit nut auxiliary connection assembled rear needs dismantle time, dismantled by the head 21 of twisting threaded male fastener 2 and flanged surface 13.
Claims (6)
1. a press fit nut auxiliary connection, comprises press fit nut (1), threaded male fastener (2), and described press fit nut (1) comprises nut body (11), it is characterized in that:
Described nut body (11) is cylindrical body, the center of nut body (11) is provided with through hole (12), the internal surface of through hole (12) is smooth surface, the diameter of through hole (12) is greater than the large footpath of outside thread of threaded male fastener (2), and one end of nut body (11) is provided with nut flange face (13).
2. a kind of press fit nut auxiliary connection according to claim 1, is characterized in that: the smallest radial size of described nut flange face (13) is more than or equal to the outside dimension of nut body (11).
3. a kind of press fit nut auxiliary connection according to claim 1, is characterized in that: the structure of described nut flange face (13) is quadrangle, hexagon, dodecagon, hexagonal flower shape or flat.
4. a kind of press fit nut auxiliary connection according to claim 1, is characterized in that: described threaded male fastener (2) is bolt, screw or stud.
5. according to a kind of press fit nut auxiliary connection in claim 1 – 4 described in any one, it is characterized in that: the diameter of described through hole (12) is than the large footpath of the outside thread large 0.05mm – 0.15mm of threaded male fastener (2).
6. according to a kind of press fit nut auxiliary connection in claim 1 – 4 described in any one, it is characterized in that: the material of described press fit nut (1) is low carbon steel, alloyed steel, stainless steel or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354040.6U CN204664109U (en) | 2015-05-28 | 2015-05-28 | Extrusion assembly nut connecting pair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354040.6U CN204664109U (en) | 2015-05-28 | 2015-05-28 | Extrusion assembly nut connecting pair |
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| CN204664109U true CN204664109U (en) | 2015-09-23 |
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| CN201520354040.6U Active CN204664109U (en) | 2015-05-28 | 2015-05-28 | Extrusion assembly nut connecting pair |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912897A (en) * | 2015-05-28 | 2015-09-16 | 东风商用车有限公司 | Extrusion assembly nut connecting pair and assembly method thereof |
| CN112008656A (en) * | 2020-08-28 | 2020-12-01 | 贵州中烟工业有限责任公司 | Replaceable quick-mounting fastening bolt |
| CN112496421A (en) * | 2020-12-08 | 2021-03-16 | 湖北三江航天险峰电子信息有限公司 | Method and device for matching, processing and converting appearance of threaded connecting piece |
| CN113586590A (en) * | 2021-08-02 | 2021-11-02 | 航天精工股份有限公司 | High-locking anti-crack mandrel and closing method thereof |
-
2015
- 2015-05-28 CN CN201520354040.6U patent/CN204664109U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912897A (en) * | 2015-05-28 | 2015-09-16 | 东风商用车有限公司 | Extrusion assembly nut connecting pair and assembly method thereof |
| CN112008656A (en) * | 2020-08-28 | 2020-12-01 | 贵州中烟工业有限责任公司 | Replaceable quick-mounting fastening bolt |
| CN112496421A (en) * | 2020-12-08 | 2021-03-16 | 湖北三江航天险峰电子信息有限公司 | Method and device for matching, processing and converting appearance of threaded connecting piece |
| CN113586590A (en) * | 2021-08-02 | 2021-11-02 | 航天精工股份有限公司 | High-locking anti-crack mandrel and closing method thereof |
| CN113586590B (en) * | 2021-08-02 | 2023-04-25 | 航天精工股份有限公司 | High-locking crack-preventing mandrel and closing method thereof |
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