CN102691712B - Detachable anti-loosing and anti-theft bolt structure - Google Patents
Detachable anti-loosing and anti-theft bolt structure Download PDFInfo
- Publication number
- CN102691712B CN102691712B CN201210188891.9A CN201210188891A CN102691712B CN 102691712 B CN102691712 B CN 102691712B CN 201210188891 A CN201210188891 A CN 201210188891A CN 102691712 B CN102691712 B CN 102691712B
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- nut
- bolt
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- screw thread
- thread
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- 239000000956 alloy Substances 0.000 claims abstract description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 4
- 230000010354 integration Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000001066 destructive effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The invention relates to a fastening piece, in particularly a detachable anti-loosing and anti-theft bolt structure. The detachable anti-loosing and anti-theft bolt structure mainly comprises a bolt and a nut, and is characterized in that a threaded section of the bolt comprises an upper section and a lower section which are fabricated integrally; threads of the upper section and the lower section are same; the diameter of the upper section is smaller than that of the lower section to ensure that the threads of the upper section does not contact the threads of the nut; the threads of the upper section and the threads of the lower section are staggered for a half screw pitch to ensure that gear peaks and gear valleys of the threads of the upper section are opposite to gear peaks and gear valleys of the threads of the nut; a snap spring which is made of a shape memory alloy material is accommodated in a space which is formed by at least one circumferential gear valley; and the threads of the lower section of the bolt are matched with the threads of the nut. The detachable anti-loosing and anti-theft bolt structure can be screwed down by using a standard tool to realize a reliable self-locking function, and the nut cannot become loosed automatically, so that the detachable anti-loosing and anti-theft bolt structure has high anti-loosing and anti-theft function. When the detachable anti-loosing and anti-theft bolt structure is required to be disassembled, the nut is heated to ensure that the snap spring is separated from the nut, and then the bolt can be unscrewed by using a wrench, so that the conventional destructive disassembly is avoided, and waste is reduced.
Description
Technical field
The present invention relates to fastening piece, particularly a kind of dismountable anti-theft bolt.
Background technique
Bolt is the most frequently used fastening piece, is tightened or is dismantled by conventional tools such as spanners, can be widely used in the fastening occasion of various needs.Many electrical equipment or devices are out of doors all to fix with bolt, as automotive number plate, wheel, storage battery, and road lamp electric appliance, transformer, air-conditioning outer machine etc., robber only need be just detachable with spanner.There is multiple anti-theft bolt in prior art, most of anti-theft bolts are to change hexagon nut into abnormity, without counter-rotational point of application of force, or hexagon nut twisted into two parts, as shown in a kind of anti-demounting bolt as disclosed in Chinese patent 200910191325.1.These schemes are all to make bolt permanent non-dismountable, but in fact more device is need to be dismountable, such as maintenance, resettlement etc., this just needs to be equipped with the special tool adapting, these special tools can exist in a large number, as long as copy out or use special tool, still can not solve stolen problem.
In addition, need to prevent from getting loose after bolton, the most frequently used is spring washer, but effectively locking reliability is not high.Chinese patent 02231475.X has introduced the anti-porcelain bolt of a kind of self-locking, on screw rod, be provided with at least one groove, the both ends of the surface of this groove are perpendicular with the axis of screw rod respectively, the bottom surface of groove parallels with the axis of screw rod, the side of groove is concave curved surface, the direction from shallow to dark of groove is consistent with the thread rotary orientation on bolt, and the side length of groove is slightly longer than the diameter of steel ball.When use, steel ball is placed in the groove of bolt, and nut is threaded to the groove of bolt.When nut is in the time tightening, nut can not be stuck; Otherwise nut is stuck, nut can not revolved.Therefore except irreversible, also there is complex structure in the solution of prior art, processing difficulties, the relative defect such as with high costs.
Summary of the invention
Technical problem to be solved by this invention is to overcome the existing defect of prior art, provides that a kind of available standards instrument turns, simple in structure, with low cost and dismountable locking, anti-theft bolt structure.
Technological scheme of the present invention is as follows: a kind of dismountable locking, anti-theft bolt structure, formed by screw bolt and nut, the thread section that it is characterized in that bolt is made into integration by two sections, the screw thread of two sections is identical, but the diameter of epimere is less than the diameter of hypomere, make it not contact with the screw thread of nut, the screw thread of epimere and the screw thread of the hypomere half pitch that staggers, make the tooth peak of the screw thread of epimere, the tooth peak of tooth paddy and nut top screw thread, tooth paddy respectively relatively, have at least one spiral circumference space content to put the jump ring of being made by shape memory alloy material at relative the formed spiral circuferential spacing of above-mentioned bolts and nuts tooth paddy, the internal thread number of turns of nut is more than the bolt hypomere outside thread number of turns, the screw-thread fit of the screw thread of bolt hypomere and nut bottom.
Described jump ring is the oval C type of spiral circle in the time of normal temperature; After heating, be the circular C type of spiral circle, just bind round in the tooth paddy of bolt epimere screw thread.Like this, heating when mounted, jump ring is that circular C type circle can not contact with the internal thread of nut, and the screw thread of bolt hypomere is coordinated with nut thread.After installing, along with the reduction of temperature, jump ring returns to the oval C type of spiral circle, and its different position is stuck in respectively the tooth paddy of nut thread and bolt thread simultaneously, and bolt can not continue advance and retreat.
The length of described bolt epimere is 1-3 pitch.
The present invention needs dismounting locking, antitheft occasion after being specifically designed to bolton, and nut can directly adopt standard piece, and bolt adopts standard piece machine shaping, can use conventional tool to tighten.Because jump ring is to make deformed movement in continuous helix tooth paddy, there is the feature of step-less adjustment locking elasticity, connected piece thickness accommodation is larger, because no matter bolt precession is in which kind of position, after cooling, all can automatically lock in this precession position, produce reliable auto-lock function, nut can not get loose voluntarily, use spanner also cannot twist, there is higher retaining anti-theft feature.The present invention has broken through traditional jump ring only can be in a specific annular spring groove locking position, the restriction that connected piece thickness is single.In the time that needs are dismantled, as long as nut place is heated, jump ring is separated with nut, available spanner exits, and has avoided traditional destructiveness dismounting, cuts the waste.
Accompanying drawing explanation
Further illustrate particular content of the present invention below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present invention.
Fig. 2 is plan view or the worm's eye view of product shown in Fig. 1.
Fig. 3 is the plan view of jump ring 3 after being heated in Fig. 1.
Fig. 4 is the cooled plan view of jump ring 3 in Fig. 1.
Description of symbols in figure: 1, bolt; 11, the tooth paddy of bolt thread; 12, the tooth peak of bolt thread; 2, nut; 21, the tooth paddy of nut thread; 22, the tooth peak of nut thread; 200, spiral circuferential spacing; 3, jump ring.
Embodiment
With reference to accompanying drawing, the thickness of nut 2 of the present invention should be greater than the length of bolt hypomere, corresponding with the epimere outside thread of bolt to reserve a few circle internal threads of upper end, for locking.The head of standard piece bolt 1 is carried out to undergauge processing with lathe, and cut-off is that to be slightly larger than the spiral shell of its screw thread dark, does not contact and is as the criterion when stretching into nut with the screw thread of nut.Undergauge section is called epimere, and undergauge section is not called hypomere, and the length of epimere is advisable with 1-3 pitch, and hypomere is the fastening function section coordinating with nut thread.Process 1-3 circle screw thread in the epimere half pitch that first staggers, the screw thread of upper-lower section is identical, like this, in the time of bolts and nuts screw-thread fit, the tooth peak 12 of bolt epimere screw thread, tooth paddy 11 are relative respectively with tooth peak 22, the tooth paddy 21 of nut thread, the spiral circuferential spacing 200 that tooth paddy 11 and 21 formation of tooth paddy can accommodating jump rings.
Jump ring 3 adopts shape memory alloy material to make, and this material has round trip memory function, is also that cold conditions (normality) is straight line strip, and hot is bung flange shape, and deformation temperature is greater than 100 ℃.When use, in the time of normality, intercept the lines that a segment length is equivalent to the girth of bolt epimere thread paddy, be around in the tooth paddy of bolt epimere screw thread, then with drying rifle to this marmem lines heating, make it lock ring in the jump ring 3 of the circular C type of the interior formation spiral of tooth paddy 11 circle of bolt epimere screw thread, at this moment the maximum diameter of jump ring 3 is less than the minimum diameter of nut thread, while making bolt epimere stretch into nut, jump ring 3 does not contact with the screw thread of nut, continue to turn bolt or nut with spanner, until fastening complete.After this, along with the reduction of temperature, jump ring 3 recovers shape to vertical element trend gradually, but due to the restriction of nut thread tooth paddy, finally forms the oval C type loop-shaped of spiral and becomes normality.Because jump ring is positioned at the spiral space that tooth paddy 11 and tooth paddy 21 form, the major axis two ends of oval C type spiral round jump ring are stuck in nut teeth paddy 21, the minor axis end of oval C type spiral ring is stuck in bolt tooth paddy 11, at this moment also cannot rotating bolt or nut with spanner, thereby realize the lock function of jump ring, reach locking, antitheft object.
If marmem lines are 2-3 circle in the tooth paddy of bolt epimere screw thread, after cooling, can form ellipse coil spring shape, to have more position is stuck in respectively in nut teeth paddy 21 and bolt tooth paddy 11, retaining performance is more reliable, is applicable to require the higher larger device of the vibrations such as such as the traffic tool.
In the time need to having larger Applicable scope to connected piece, nut can be made thicker, make it the internal thread compared with multi-turn, such as being shaped with 10 road internal threads, wherein 5 roads are fastening used as coordinating with bolt thread, 5 other road thread paddy all can be used for coordinating locking with jump ring, are also that the suitable thicknesses excursion of connected piece is equivalent to 5 road pitch sums.
In the time of needs dismounting device, as long as nut is heated with drying rifle, make the jump ring of the shape-memory in nut return to the spiral circle form of lock ring in the tooth paddy 11 of bolt epimere screw thread, jump ring separates with nut, be that available spanner unclamps nut, realize dismountable object.
Claims (3)
1. dismountable locking, an anti-theft bolt structure, formed by screw bolt and nut, the thread section that it is characterized in that bolt is made into integration by two sections, the screw thread of two sections is identical, but the diameter of epimere is less than the diameter of hypomere, make it not contact with the screw thread of nut, the screw thread of epimere and the screw thread of the hypomere half pitch that staggers, makes the tooth peak of the screw thread of epimere, tooth paddy relative respectively with tooth peak, the tooth paddy of nut top screw thread; Have at least one spiral circumference space content to put the jump ring of being made by shape memory alloy material at relative the formed spiral circuferential spacing of above-mentioned bolts and nuts tooth paddy, this jump ring forms the circular C type of spiral circle under heated condition, just bind round in the tooth paddy of bolt epimere screw thread, when normality, be the oval C type of spiral circle, its major axis two ends are stuck in nut teeth paddy, and its minor axis end is stuck in bolt tooth paddy; The internal thread number of turns of nut is more than the bolt hypomere outside thread number of turns, the screw-thread fit of the screw thread of bolt hypomere and nut bottom.
2. dismountable locking, anti-theft bolt structure according to claim 1, is characterized in that the external diameter of the circular C type of described spiral circle is slightly less than the minimum diameter of nut.
3. dismountable locking, anti-theft bolt structure according to claim 1, the length that it is characterized in that described bolt epimere is 1-3 pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188891.9A CN102691712B (en) | 2012-05-28 | 2012-05-28 | Detachable anti-loosing and anti-theft bolt structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188891.9A CN102691712B (en) | 2012-05-28 | 2012-05-28 | Detachable anti-loosing and anti-theft bolt structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102691712A CN102691712A (en) | 2012-09-26 |
| CN102691712B true CN102691712B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210188891.9A Expired - Fee Related CN102691712B (en) | 2012-05-28 | 2012-05-28 | Detachable anti-loosing and anti-theft bolt structure |
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| Country | Link |
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| CN (1) | CN102691712B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2618644C1 (en) * | 2016-04-25 | 2017-05-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) | Method of manufacturing threaded connection and loading the load on its loops in the face end support nut |
| CN106224644B (en) * | 2016-07-25 | 2019-03-15 | 华北水利水电大学 | A quick-disassemble pipe support and hanger connection device |
| US10471517B2 (en) * | 2017-07-18 | 2019-11-12 | Iscar Ltd. | Cutting tool and cutting tool body with a holding member for holding a coupling screw |
| CN108105248A (en) * | 2017-12-01 | 2018-06-01 | 宁波金鼎紧固件有限公司 | A kind of dismountable locking, anti-theft bolt structure |
| CN111853027B (en) * | 2020-08-25 | 2024-03-22 | 重庆科技学院 | Anti-tripping bolt for while-drilling tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2231341Y (en) * | 1995-08-16 | 1996-07-17 | 陈德威 | Self-locking anti-theft nut |
| CN2351612Y (en) * | 1998-10-29 | 1999-12-01 | 王松录 | V-shape slip-spring self-locking screw nut |
| KR100701782B1 (en) * | 2006-12-07 | 2007-03-29 | (주)성실기계 | Loosening Nut |
| JP2009068585A (en) * | 2007-09-12 | 2009-04-02 | Heiwa Corp | Connection structure |
| CN202579583U (en) * | 2012-05-28 | 2012-12-05 | 赵群燕 | Anti-looseness anti-theft bolt |
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2012
- 2012-05-28 CN CN201210188891.9A patent/CN102691712B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102691712A (en) | 2012-09-26 |
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