CN103775469A - Anti-theft structure of fastener and recovery tool thereof - Google Patents
Anti-theft structure of fastener and recovery tool thereof Download PDFInfo
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- CN103775469A CN103775469A CN201210409273.2A CN201210409273A CN103775469A CN 103775469 A CN103775469 A CN 103775469A CN 201210409273 A CN201210409273 A CN 201210409273A CN 103775469 A CN103775469 A CN 103775469A
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- protecting jacket
- theft
- fastening piece
- link
- prevention structure
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Abstract
The invention discloses an anti-theft structure of a fastener. The anti-theft structure of the fastener comprises a body provided with threads and a protective jacket provided with a drive structure. The protective jacket is connected with the body through a plurality of connecting pieces. Each connecting piece is tin alloy. The sintering temperature of the tin alloy ranges from 185 DEG C to 235 DEG C. Parts in contact with the connecting pieces comprise at least one iron piece. The body, the connecting pieces and the protective jacket are combined into a whole through sintering of the connecting pieces. In the process of fastening of the fastener, a shear failure happens to each connecting piece under the action of certain torsion, slipping happens to the protective jacket and the body, and therefore the anti-theft function on a device where the fastener is arranged is achieved. According to each connecting piece, recombination of the protective jacket and the body is achieved through a recovery tool, and non-destructive detachment of the fastener is achieved.
Description
Technical field
The present invention relates to a kind of fastening piece, particularly relate to a kind of fastening piece and recovery instrument of theft-prevention structure, described fastening piece comprises the protecting jacket that threaded body is set and be provided with driving structure.
Background technique
The application area of screw is quite extensive, the kind of screw is quite various, screw is used to the fastening equipment of various need, instrument and apparatus, be widely used in machinery, petrochemical industry, communication, chemical industry, building industry, electric power, sewage treatment, weaving, sports equipment, papermaking, boats and ships, automobile and other industries, along with the application area of the development screw of domestic economy will be more extensive.But, at some special dimensions, screw is as fastened tools, but can not be screwed out easily or people for a change it, as ammeter industry, gas meter industry, electric power control industry, communications industry, the special controlling component of automobile, vehicle key parts, lockset fixing etc., the structure that people once constantly attempted improvement screw makes it have controllability.Notification number is that the Chinese utility model patent of CN201671946U discloses a kind of full bag twisting-off anti-theft nut, comprise nut body and protective coat, the cross section of described protective coat has the structure of sideway stance, upper end face part and position, lower end surface parcel, nut body is in the inside of protective coat, the gluing connection of nut body and protective coat.Full bag twisting-off anti-theft nut like this has can better protect nut body, play antitheft effect, also have nut body and protective coat in conjunction with more firm, this nut not the used time can not destroy the effect of its combination, be conducive to the effect that tightens of nut.But this anti-theft nut is disposable use, can only destroy just and can be removed, dismantle where necessary.And some anti-theft screws only carry out nonstandard structural change to screw head, make it need special screw instrument to dismantle; And this instrument can be bought or self manufacture from the market, could not be good play can the antitheft effect that can keep in repair again.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of theft-prevention structure of fastening piece, and it can be at the link of a setting high-temp alloying after twisting off by one, realizes the antitheft of fastening piece and exempts to destroy dismounting.Meanwhile, provide a kind of recovery instrument of this fastening piece, the clinkering under a setting temperature of this fastening piece can normally be dismantled by conventional criteria instrument after recovering.
Technical solution of the present invention is: a kind of theft-prevention structure of fastening piece, comprises the protecting jacket that threaded body is set and be provided with driving structure; Described protecting jacket is connected with described body by some links; Described link is a kind of tin alloy; The fusion bonded temperature of described tin alloy is 185-235 ℃; In the part contacting with described link, at least comprise an irony part.Make body, link and protecting jacket synthesize one by the clinkering of link.Fastening piece in rundown process, the shear fracture that link occurs under a predetermined twisting force, what protecting jacket and body occurred skids, and realizes the antitheft of utensil that fastening piece applies.But this link is realized reconsolidating of protecting jacket and body by a recovery instrument, realize the non-destruction dismounting of fastening piece.
Tin alloy be divided into have plumbous with unleaded two kinds, its composition need to be adjusted according to required shear strength and fusion bonded temperature.Lead-free tin alloy is generally used for the occasion that shear strength is had relatively high expectations.The ratio of copper can ideally be adjusted its shear strength.As a kind of optimal technical scheme, described tin alloy composition comprises tin 63%, plumbous 37%; Or tin 95.4%, silver 3.1%, copper 1.5%.
In order to prevent the oxidation of tin alloy, improve the recovery of link, described link also soaks and is wrapped with soldering flux; Described soldering flux at least comprises the one in rosin or hydrochloric acid benzene zinc.The irony fastening piece especially easily getting rusty need add a small amount of hydrochloric acid benzene zinc, can effectively prevent the oxidation and rusting of fastening piece.And copper fastening piece only need add appropriate rosin, addition is about the 5-9% of link weight.
As a kind of optimal technical scheme, described fastening piece is bolt; Described body comprises a connecting end, and described protecting jacket wraps up described connecting end; Described link is arranged between described connecting end and the interior edge face of protecting jacket.Particularly, fastening piece is provided with a fixed hole that runs through described body and connecting end described in this optimal technical scheme, is provided with a stationary axle through described fixed hole in the middle of described protecting jacket; Described protecting jacket is riveted on described body by the fixed end on described stationary axle.Protecting jacket is riveted into an entirety after being connected by stationary axle with body again, and processing technology is simple, connects reliable.The link particle of tin alloy put into by automatic filling machine after by the tunnel furnace moulding of heating, make protecting jacket and body and Connector composition one.
As another kind of technological scheme, described fastening piece is nut; Described protecting jacket wraps up the other parts except the screw of nut; Described link is arranged between described nut and the side face of protecting jacket.In the time that fastening piece is nut, due to the existence of middle screw, protecting jacket and body are realized the parcel to body by the reducing of protecting jacket.
For a recovery instrument for the theft-prevention structure of above-mentioned fastening piece, comprise handle, be connected in handle front end knife bar, be arranged in knife bar and the high frequency coil that is electrically connected with external power supply and be connected in knife bar head end and the driving head with protecting jacket driving structure adaptation; The installation of described high frequency coil makes the magnetic line of force of the alternating magnetic field producing by described irony part.
Adopt technological scheme of the present invention, can realize fastening piece and apply the effectively antitheft of utensil.Meanwhile, use the recovery instrument of this fastening piece, the clinkering under a setting temperature of this fastening piece is recovered, and can normally dismantle by conventional criteria instrument, realize reusing of anti-theft fastening piece.
Accompanying drawing explanation
Fig. 1 is the perspective view of the embodiment of the present invention one.
Fig. 2 is the sectional drawing of the embodiment of the present invention one.
Fig. 3 is the structural representation of protecting jacket in the embodiment of the present invention one.
Fig. 4 is the perspective view of the embodiment of the present invention two.
Fig. 5 is the sectional drawing of the embodiment of the present invention two.
Fig. 6 is the perspective view of the embodiment of the present invention three.
Fig. 7 is the sectional drawing of the embodiment of the present invention three.
Fig. 8 is the structural representation that recovers instrument in the present invention.
Wherein, groove 102, fixed hole 103, protecting jacket 2, driving structure 201, stationary axle 202 on body 1, connecting end 101, body, put groove 203, body 204, axis body 205, fixed end 206, link 3, irony pad 4, connecting pin 5, handle 10, high frequency coil 11, knife bar 12, driving head 13, screw in characteristic curve A, screw out characteristic curve B, shear property curve C, characteristic changing amount K, torsion N, time t.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment one
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of theft-prevention structure of fastening piece, comprises body 1, protecting jacket 2 and link 3.In the present embodiment, this fastening piece is a bolt.This body 1 is provided with a screw rod with connecting thread, is the connecting end 101 that a shoulder arranges in the upper end of screw rod, is provided with the fixed hole 103 of a perforation in the centre of body 1, is provided with a reaming in the lower end of fixed hole 103.These protecting jacket 2 upper ends are provided with a driving structure 201.The driving structure that this driving structure 201 is arbitrary standard piece, as, straight groove, cross recess, interior hexagonal, outer-hexagonal etc.
Be a nested structure in the lower end of protecting jacket 2, connecting end 101 adaptations of this nested structure and body 1 are also wrapped up this connecting end.In the middle of protecting jacket 2, be provided with a stationary axle 202 to downward-extension, fixed hole 103 adaptations on this stationary axle 202 and body 1 also stretch in this fixed hole 103.Protecting jacket 2 is fixing by the reaming riveted joint of stationary axle 202 head ends and fixed hole 103 with body 1.
On the upper-end surface of the connecting end 101 of body 1, be provided with groove 102 on six individualities.On this body, groove 102 is circumferentially uniform.On the bottom surface of the nested structure of protecting jacket 2, be provided with six corresponding with groove on body 102 grooves 203 that put.Groove 102 and put and be embedded with link 3 in the space between groove 203 on body.When fastening piece drives by the driving structure 201 on protecting jacket 2, transmit torsion to body 1 by this link 3.
Because link 3 intensity of this tin alloy are lower than the intensity of body 1 and protecting jacket 2, thus this bolt be screwed into after object or utensil, after driving torque is greater than a default torsion or make this link 3 cut off under instantaneous burst torsion.Protecting jacket 2 separates with body 1 part, and protecting jacket 2 can not drive body 1 to rotate again, thereby realizes the anti-theft function of this fastening piece to applied utensil.
Common anti-theft fastening piece is disposable damage type, and follow-up legal dismounting is brought to inconvenience, even causes the destruction of the utensil that fastening piece is applied.Main points of the present invention be to utilize tin alloy can be under preset temperature the characteristic of clinkering again, make it can again recover after destroying realizing antitheft.Referring to Fig. 8, recovery instrument of the present invention is a radio frequency heating instrument, comprise handle 10, be connected in handle 10 front ends knife bar 12, be arranged in knife bar 12 and the high frequency coil 11 that is electrically connected with external power supply and be connected in knife bar 12 head ends and the driving head 13 with protecting jacket 2 driving structure 201 adaptations; The installation of described high frequency coil 11 makes the magnetic line of force of the alternating magnetic field producing by described irony part, in the present embodiment, is protecting jacket 2 and body 1.Radio frequency heating technology is comparatively ripe technology.Have many disclosed data to relate to radio frequency heating technology, the principle of this radio frequency heating can be published referring to Shanghai science tech publishing house in 1963, and author is (Soviet Union) Ge Luhanuofu, H. ∏. work; Translator is Zhang Meidun's " physical basis of radio frequency heating " book.
When fastening piece newly completes, fastening piece interconnecting piece 3 is square type state, and the power of combining between the higher and lower levels of fastening piece approximates the total shearing force of tin alloy.
When fastening piece is heated in clinkering process again, due to the movement of the instrument of recovery, tin alloy can overflow and be filled in equably fastening piece " position, gap ", make fastening piece back-out power be greater than screw-in shearing force, screw in characteristic curve A and screw out the torsion being applied on link 3 when characteristic curve B shows respectively fastening piece at screw-in and screws out and change, shear property curve C is that the torsion of link 3 while cutting off changes, and characteristic changing amount K is the Strength Changes before link 3 is cut off and after recovering.
So we change after being to use one-period in suggestion in the time of this fastening piece of design, but find after actual use, as long as suitable adjustment and recovery instrument also can make fastening piece repeatedly use.
Embodiment two
In the present embodiment, the body 1 of fastening piece and protecting jacket 2 adopt copper material.Because copper material can not produce heat by alternating magnetic field, therefore, also protect and draw together an irony pad 4 in the present embodiment.Referring to Fig. 4 and Fig. 5, this fastening piece is still a bolt, comprises body 1, protecting jacket 2 and link 3.In this enforcement, the structure of this body 1 is identical with embodiment one, but is copper material.
Protecting jacket 2 is a Split type structure, comprises body 204 and axis body 205.Axis body 205 is in T shape, is provided with a fixed end 206, is provided with six corresponding with groove 102 on body on the connecting end 101 of body 1 grooves 203 that put on the bottom surface of this fixed end 206, and link 3 is arranged on groove 102 on body and puts in the space that groove 203 forms.In this implementation column, the tin alloy that link 3 adopts, its characteristic and composition are all identical with embodiment one.The soldering flux adopting is rosin, and addition is about 6% of link weight.
Irony pad 4 is arranged between body 204 and axis body 205, and connects into an overall protecting jacket 2 by four connecting pins 5.Protecting jacket 2 is riveted with the fixed hole 103 in body 1 by the stationary axle 202 being arranged on axis body 205 equally.
The recovery instrument adopting in the present embodiment is identical with embodiment one.
Embodiment three
Referring to Fig. 6 and Fig. 7, in the present embodiment, fastening piece is the nut of an irony.The screw of nut is arranged on the centre of body 1, and protecting jacket 2 wraps up the other parts except screw, and link is arranged between body 1 and the side face of protecting jacket 2.
Protecting jacket 2 is provided with an outer-hexagonal driving structure 201 in the present embodiment.On the inner peripheral surface of protecting jacket 2, be provided with six and put groove 102, be provided with groove 203 on six bodies corresponding with putting groove 102 on the outer circumferential face of body 1, link 3 is arranged on by putting in the space that on groove 102 and body, groove 203 forms.Wherein on body, groove 203 one end are open, the other end sealing.After nut installs, carry out reducing by the body 1 of groove 203 closed ends on protecting jacket 2 and body and fix.In this implementation column, the tin alloy that link 3 adopts, its characteristic and composition soldering flux equal and that adopt is all identical with embodiment one.
Specific embodiment is in order more clearly to understand the present invention,, as the one restriction to right of the present invention, is not departing under the prerequisite of aim of the present invention, can there be various variations, as, tin alloy can adopt other hot melt material with sufficient intensity, as macromolecular material substitutes.All these to the apparent modification of described those skilled in the art by within being included in the scope of this claim.
Claims (9)
1. a theft-prevention structure for fastening piece, comprises the protecting jacket that threaded body is set and be provided with driving structure; It is characterized in that: described protecting jacket is connected with described body by some links; Described link is a kind of tin alloy; The fusion bonded temperature of described tin alloy is 185-235 ℃; In the part contacting with described link, at least comprise an irony part.
2. theft-prevention structure according to claim 1, is characterized in that: described tin alloy composition comprises tin 63%, plumbous 37%; Or tin 95.4%, silver 3.1%, copper 1.5%.
3. theft-prevention structure according to claim 1 and 2, is characterized in that: described link also soaks and is wrapped with soldering flux; Described soldering flux at least comprises the one in rosin or hydrochloric acid benzene zinc.
4. theft-prevention structure according to claim 1 and 2, is characterized in that: described fastening piece is bolt; Described body comprises a connecting end, and described protecting jacket wraps up described connecting end; Described link is arranged between described connecting end and the interior edge face of protecting jacket.
5. theft-prevention structure according to claim 3, is characterized in that: described fastening piece is bolt; Described body comprises a connecting end, and described protecting jacket wraps up described connecting end; Described link is arranged between described connecting end and the interior edge face of protecting jacket.
6. theft-prevention structure according to claim 5, is characterized in that: described fastening piece is provided with a fixed hole that runs through described body and connecting end, is provided with a stationary axle through described fixed hole in the middle of described protecting jacket; Described protecting jacket is riveted on described body by the fixed end on described stationary axle.
7. theft-prevention structure according to claim 1 and 2, is characterized in that: described fastening piece is nut; Described protecting jacket wraps up the other parts except the screw of nut; Described link is arranged between described nut and the side face of protecting jacket.
8. theft-prevention structure according to claim 3, is characterized in that: described fastening piece is nut; Described protecting jacket wraps up the other parts except the screw of nut; Described link is arranged between described nut and the side face of protecting jacket.
9. for a recovery instrument for the theft-prevention structure of fastening piece described in claim 1～8, it is characterized in that: comprise handle, be connected in handle front end knife bar, be arranged in knife bar and the high frequency coil that is electrically connected with external power supply and be connected in knife bar head end and the driving head with protecting jacket driving structure adaptation; The installation of described high frequency coil makes the magnetic line of force of the alternating magnetic field producing by described irony part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409273.2A CN103775469A (en) | 2012-10-23 | 2012-10-23 | Anti-theft structure of fastener and recovery tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409273.2A CN103775469A (en) | 2012-10-23 | 2012-10-23 | Anti-theft structure of fastener and recovery tool thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103775469A true CN103775469A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210409273.2A Pending CN103775469A (en) | 2012-10-23 | 2012-10-23 | Anti-theft structure of fastener and recovery tool thereof |
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| CN (1) | CN103775469A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889687A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Method for manufacturing sports car hub anti-theft screw |
| CN104895903A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Anti-theft screw of sports car hub |
| TWI778809B (en) * | 2021-09-24 | 2022-09-21 | 富世達股份有限公司 | Tamper Screws, Locking Tools and Locking Tool Sets |
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| CN2384019Y (en) * | 1999-06-09 | 2000-06-21 | 康智 | Bolt capable of preventing being detached by theft |
| CN101198436A (en) * | 2005-07-14 | 2008-06-11 | 有限会社苏菲亚制造 | Solder alloy for oxide bonding |
| CN201126744Y (en) * | 2007-12-21 | 2008-10-01 | 隆科电子(惠阳)有限公司 | Nail type superheating diasmechanism tasis |
| CN201358999Y (en) * | 2009-03-06 | 2009-12-09 | 梁伟 | Hamstring-type antitheft screw |
| CN102465952A (en) * | 2010-11-09 | 2012-05-23 | 北汽福田汽车股份有限公司 | Anti-theft bolt, anti-theft bolt mounting method and automobile |
| CN203081982U (en) * | 2012-10-23 | 2013-07-24 | 浙江喜乐嘉电器有限公司 | Antitheft structure of fastener and recovery tool |
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2012
- 2012-10-23 CN CN201210409273.2A patent/CN103775469A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2384019Y (en) * | 1999-06-09 | 2000-06-21 | 康智 | Bolt capable of preventing being detached by theft |
| CN101198436A (en) * | 2005-07-14 | 2008-06-11 | 有限会社苏菲亚制造 | Solder alloy for oxide bonding |
| CN201126744Y (en) * | 2007-12-21 | 2008-10-01 | 隆科电子(惠阳)有限公司 | Nail type superheating diasmechanism tasis |
| CN201358999Y (en) * | 2009-03-06 | 2009-12-09 | 梁伟 | Hamstring-type antitheft screw |
| CN102465952A (en) * | 2010-11-09 | 2012-05-23 | 北汽福田汽车股份有限公司 | Anti-theft bolt, anti-theft bolt mounting method and automobile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889687A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Method for manufacturing sports car hub anti-theft screw |
| CN104895903A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Anti-theft screw of sports car hub |
| TWI778809B (en) * | 2021-09-24 | 2022-09-21 | 富世達股份有限公司 | Tamper Screws, Locking Tools and Locking Tool Sets |
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