CN203384187U - Anti-loosening fastening nut - Google Patents
Anti-loosening fastening nut Download PDFInfo
- Publication number
- CN203384187U CN203384187U CN201320007414.8U CN201320007414U CN203384187U CN 203384187 U CN203384187 U CN 203384187U CN 201320007414 U CN201320007414 U CN 201320007414U CN 203384187 U CN203384187 U CN 203384187U
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- Prior art keywords
- nut
- bolt
- ring body
- elastic ring
- loosening
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Abstract
The utility model discloses an anti-loosening fastening nut, comprising a nut body, a threaded hole is machined in the nut body, the root of internal screw threads of the threaded hole is provided with a wedge inclined surface, a projection is formed by outward extension of one end of the nut body, A through hole communicated with the threaded hole is machined in the projection, an annular groove is machined in the through hole, a non-metallic resilient ring body is installed in the annular groove, and the diameter of the internal circumferential surface of the elastic ring body is equal to the internal diameter of the threaded hole. The elastic ring body is installed in the anti-loosening fastening nut, and the root of internal screw threads is provided with the wedge inclined surface, when a bolt is screwed into the nut, the elastic ring body above the nut is extruded to make the bolt cling to the nut, through two to three times of the above motion, the wedge inclined surface of the nut and the tip of the bolt form a relatively complete combined surface via running-in, and loosening of the screw threads is effectively prevented.
Description
Technical field
The utility model relates to the machining production field, special relevant with the structure of fastening piece in mechanical erection.
Background technique
At present, the installation of various device and mechanical mechanism all needs to use fastening piece with being connected, and the loosening of fastening piece is the problem often occurred.Once fastening piece is loosening gently cause device damage, heavy injure personal safety.
The loosening vibration that mainly comes from equipment of fastening piece.Nut of a common bolt, we are called a pair, are again bolt pair.When bolt is screwed into nut, have certain gap between the two.Very close to each other, bolt also twists not advance in nut and go.Be exactly this gap, when equipment in use can produce certain vibration, will produce laterally (radially) displacement between nut and bolt.This has just caused fastening piece loosening.Ocsillator strenght is larger, or larger its loosening possibility in the gap of nut and bolt is just larger.So just managing research, people how to make fastening piece not loosening, namely locking.Way is a lot, but does not all tackle the problem at its root.Not that anti-loosing effect is bad, can not reuse exactly.
American engineer, through years of researches and on probation, has redesigned the geometrical shape of screw thread.Invent the locking thread technology of " SPL " (executing must be firm) in late nineteen seventies, fundamentally solved the loosening problem of bolt.
As shown in Figure 1, the U.S. execute must firm checknut and the difference of regular screw threads maximum be that root at the bottom of the tooth of nut 1 internal thread has the wedge shape inclined-plane 11 of one 30 degree.Visible in figure when bolt 2 and nut 1 are tightened mutually, bolt 2 produces with 1, nut the axial thrust load that opposite direction, a moment equate, now the cusp of bolt 2 is with regard on the wedge shape inclined-plane 11 that tightly withstands on nut 1 internal thread 30 and spend.Thereby eliminated horizontal (radially) gap of 1, bolt 2 and nut, and produced larger wedge lock power.Realized the anti-loosing effect of bolt 2.Along with reusing of bolt 2, its junction plane of break-in on the cusp of its bolt 2 and nut 1 internal thread 30 degree wedge shape inclined-planes 11 is increasing, and anti-loosing effect can be become better and better.Realized reusable purpose.
Must firm locking thread technology solve locking and reusable function although the U.S. executes, still existed following deficiency from structure and actual the use:
(1) from above working principle, can find out, U.S.'s Spiralock nut 1 must first repeat to loosen, tighten 2～3 times when initial the use, make on its bolt 2 cusps and nut 1 internal thread the break-in 2～3 times repeatedly of the 30 little inclined-planes of degree, make it form a junction plane between the two, could reliably realize anti-loosing effect.But this is in actual use, tend to be operated personnel and ignore or be considered to more loaded down with trivial details, directly just tighten and finish.Consequently 30 of bolt 2 cusps and nut 1 internal thread degree wedge shape inclined-planes 11 are not formed with the junction plane of some strength, and are only that tighten on surface, once bolt 2 nuts 1 meet judder, still can become flexible, and do not reach anti-loosing effect.
(2) the fastening piece using scope is wider at present; often can use outdoor equipment in the open to exist; as railroad track equipment, engineering machinery, automobile, mining machinery etc., 2, U.S.'s Spiralock nut 1 and bolt be without water-tight device, once the rainy day rainwater after drenching very easily corrosion rot; when plant machinery need to repeat to adjust or keep in repair; do not dismantle because the corrosion subsides stick together, only have to cut off and abolish, again change one; thereby do not reach reusable effect, cause great waste.
The model utility content
For problems of the prior art, the purpose of this utility model is for providing a kind of can directly tightening to loosen and reusable simple in structure, the service-strong anti-loosening fastening nut that has again certain waterproof rain-proof function.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of anti-loosening fastening nut, comprise nut body, be processed with tapped hole on described nut body, at the bottom of the tooth of the internal thread of described tapped hole, root has a wedge shape inclined-plane, a wherein end of described nut body extends outward projection, is processed with the through hole that is communicated with described tapped hole on described projection, is processed with a circular groove in described through hole, the elastic ring body of nonmetallic material is installed in described circular groove, and the inner peripheral surface diameter of described elastic ring body is suitable with described tapped hole internal diameter.
Further, described elastic ring body is nylon ring.
Further, between described wedge shape inclined-plane and described tapped hole axis, angle is 30 degree.
Further, described nut body and described projection are integrally formed.
The utlity model has following advantage:
1, in anti-loosening fastening nut of the present utility model, elastic ring body is installed, and at the bottom of the tooth of internal thread, root has a wedge shape inclined-plane, elastic ring body after when bolt, being screwed into nut above powerful extruding nut tightly sticks together bolts and nuts, to realize the locking function of bolt pair, although elastic ring body may can only repeat to push 2～3 times, reuse again and just lose plasticity, but repeat 2～3 inclined-planes of the wedge shape with back nut and become a more complete junction plane with bolt cusp break-in, can effectively prevent that screw thread from getting loose, thereby realized from installing for the first time until reuse end, coherent reliable locking functions, need not carry out initial break-in adjustment, simple in structure, and convenient to operation.
2, the elastic ring body due to nonmetallic material has plasticity, the matching gap of bolts and nuts is also played to sealing is rainproof, the function of waterproof.As long as will add in bolt or nut that the lubricant oil that some viscosity is higher just can effectively play the anti-corrosion effect when mounted, to prevent between the two because corrosion is pasted together, follow-uply reuse convenient and swiftly, can avoid unnecessary waste again.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 be the U.S. execute must firm chek bolt nut the cooperating structure schematic diagram;
The structural representation that Fig. 2 is anti-loosening fastening nut of the present utility model.
Embodiment
The exemplary embodiments that embodies the utility model feature & benefits will describe in detail in the following description.Be understood that the utility model can have various variations on different embodiments, its neither disengaging scope of the present utility model, and explanation wherein and accompanying drawing be when the use that explain in itself, but not in order to limit the utility model.
Anti-loosening fastening nut of the present utility model comprises nut body 3, nut 1 structure in the locking thread technology of the structure of nut body 3 and " SPL " that describe in background technique (execute must jail) is identical, structure as shown in Figure 1, all that to adopt the wedge shape inclined-planes 11 of 30 degree to be coordinated locking, at this repeated description no longer.
As shown in Figure 2, a wherein end of nut body 3 extends outward projection 4, be processed with the through hole 41 of the tapped hole 31 that is communicated with nut body 3 on projection 4, be processed with a circular groove 42 in through hole 41, the elastic ring body 5 of nonmetallic material is installed in circular groove 42, as nylon ring, it can be also rubber ring etc.The inner peripheral surface diameter of elastic ring body 5 is suitable with tapped hole 31 internal diameters, to facilitate and bolt 2 resilient engagement.Nut body 3 is integrally formed with projection 4, can adopt the material such as stainless steel to carry out machining formation.
The utlity model has following advantage:
1, elastic ring body 5 is installed in anti-loosening fastening nut of the present utility model, and at the bottom of the tooth of internal thread, root has a wedge shape inclined-plane, elastic ring body 5 after when bolt, being screwed into nut above powerful extruding nut tightly sticks together bolts and nuts, to realize the locking function of bolt pair, although elastic ring body 5 may can only repeat to push 2～3 times, reuse again and just lose plasticity, but repeat 2～3 inclined-planes of the wedge shape with back nut and become a more complete junction plane with bolt cusp break-in, can effectively prevent that screw thread from getting loose, thereby realized from installing for the first time until reuse end, coherent reliable locking functions, need not carry out initial break-in adjustment, simple in structure, and convenient to operation.
2, the elastic ring body 5 due to nonmetallic material has plasticity, the matching gap of bolts and nuts is also played to sealing is rainproof, the function of waterproof.As long as will add in bolt or nut that the lubricant oil that some viscosity is higher just can effectively play the anti-corrosion effect when mounted, to prevent between the two because corrosion is pasted together, follow-uply reuse convenient and swiftly, can avoid unnecessary waste again.
The technical solution of the utility model is disclosed as above by preferred embodiment.Those skilled in the art should recognize in the situation that do not break away from change and the retouching that scope and spirit of the present utility model that the appended claim of the utility model discloses are done, within all belonging to the protection domain of claim of the present utility model.
Claims (4)
1. an anti-loosening fastening nut, it is characterized in that, comprise nut body, be processed with tapped hole on described nut body, at the bottom of the tooth of the internal thread of described tapped hole, root has a wedge shape inclined-plane, and a wherein end of described nut body extends outward projection, be processed with the through hole that is communicated with described tapped hole on described projection, be processed with a circular groove in described through hole, the elastic ring body of nonmetallic material is installed in described circular groove, the inner peripheral surface diameter of described elastic ring body is suitable with described tapped hole internal diameter.
2. anti-loosening fastening nut as claimed in claim 1, is characterized in that, described elastic ring body is nylon ring.
3. anti-loosening fastening nut as claimed in claim 1, is characterized in that, between described wedge shape inclined-plane and described tapped hole axis, angle is 30 degree.
4. anti-loosening fastening nut as claimed in claim 1, is characterized in that, described nut body and described projection are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320007414.8U CN203384187U (en) | 2013-01-08 | 2013-01-08 | Anti-loosening fastening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320007414.8U CN203384187U (en) | 2013-01-08 | 2013-01-08 | Anti-loosening fastening nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384187U true CN203384187U (en) | 2014-01-08 |
Family
ID=49872684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320007414.8U Expired - Fee Related CN203384187U (en) | 2013-01-08 | 2013-01-08 | Anti-loosening fastening nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384187U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373449A (en) * | 2014-11-06 | 2015-02-25 | 海盐哈特惠机械五金制品有限公司 | Multifunctional anti-disengaging nut |
| CN104976212A (en) * | 2014-04-04 | 2015-10-14 | 上海机电工程研究所 | Screw connecting device |
| CN105179431A (en) * | 2015-10-12 | 2015-12-23 | 贵州航天精工制造有限公司 | Riveting self-locking nut assembly and application method thereof |
| CN105350405A (en) * | 2015-11-20 | 2016-02-24 | 李�远 | Railway track bolt and nut and machining technology of stop ring in bolt and nut |
| CN106545561A (en) * | 2017-01-12 | 2017-03-29 | 北京中昊创业交通科学应用技术研究发展中心 | A kind of Anti-loosen stop nut and Anti-loosen stop nut assembly |
| CN107461392A (en) * | 2017-08-22 | 2017-12-12 | 苏州威富达精密机械制造有限公司 | It is a kind of can oblique angle fix coupling nut |
| CN109026962A (en) * | 2018-10-11 | 2018-12-18 | 浙江赛日机电科技有限公司 | Combine stop nut |
| CN110500353A (en) * | 2019-09-17 | 2019-11-26 | 光之能（厦门）科技有限公司 | A kind of water floating body rotation stop nut |
-
2013
- 2013-01-08 CN CN201320007414.8U patent/CN203384187U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976212A (en) * | 2014-04-04 | 2015-10-14 | 上海机电工程研究所 | Screw connecting device |
| CN104373449A (en) * | 2014-11-06 | 2015-02-25 | 海盐哈特惠机械五金制品有限公司 | Multifunctional anti-disengaging nut |
| CN104373449B (en) * | 2014-11-06 | 2016-05-25 | 海盐哈特惠机械五金制品有限公司 | A kind of multi-functional Anti-loosing screw cap |
| CN105179431A (en) * | 2015-10-12 | 2015-12-23 | 贵州航天精工制造有限公司 | Riveting self-locking nut assembly and application method thereof |
| CN105350405A (en) * | 2015-11-20 | 2016-02-24 | 李�远 | Railway track bolt and nut and machining technology of stop ring in bolt and nut |
| CN106545561A (en) * | 2017-01-12 | 2017-03-29 | 北京中昊创业交通科学应用技术研究发展中心 | A kind of Anti-loosen stop nut and Anti-loosen stop nut assembly |
| CN107461392A (en) * | 2017-08-22 | 2017-12-12 | 苏州威富达精密机械制造有限公司 | It is a kind of can oblique angle fix coupling nut |
| CN109026962A (en) * | 2018-10-11 | 2018-12-18 | 浙江赛日机电科技有限公司 | Combine stop nut |
| CN109026962B (en) * | 2018-10-11 | 2023-12-19 | 浙江赛日机电科技有限公司 | Combined locknut |
| CN110500353A (en) * | 2019-09-17 | 2019-11-26 | 光之能（厦门）科技有限公司 | A kind of water floating body rotation stop nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20160108 |