CN101435459A - Anti-theft special-shaped nut and special-shaped bolt - Google Patents
Anti-theft special-shaped nut and special-shaped bolt Download PDFInfo
- Publication number
- CN101435459A CN101435459A CNA2008101633650A CN200810163365A CN101435459A CN 101435459 A CN101435459 A CN 101435459A CN A2008101633650 A CNA2008101633650 A CN A2008101633650A CN 200810163365 A CN200810163365 A CN 200810163365A CN 101435459 A CN101435459 A CN 101435459A
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- nut
- bolt
- unidirectional
- groove
- forth effort
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Abstract
The invention discloses a theftproof special-shaped nut and a special-shaped bolt, which comprises a nut body, a central threaded hole, a bolt bar and a bolt head. The nut and the bolt are characterized in that at least three equidistant alternate unidirectional force-exerting grooves are arranged on the nut body and the bolt body respectively; each unidirectional force-exerting groove has a vertical surface and a bottom surface; the vertical surface of each unidirectional force-exerting groove is a warp-wise straight wall surface; the straight wall surface is the precession direction of the nut or the bolt; and the bottom surfaces of the unidirectional force-exerting grooves are smooth surfaces and are in rounding-off connection with the outer surface of the nut body or the bolt body, so as to enable the bottom surfaces of the unidirectional force-exerting grooves and the outer surface of the nut of form smooth surfaces. The nut and the bolt have the advantages that the nut or the bolt head can be driven to wind only when a specially-made sleeve is sleeved on and clamped to the vertical walls of the unidirectional force-exerting grooves of the nut or the bolt head, and the nut or the bolt can not be screwed out as no force-exerting point exists, thereby having good theftproof effects.
Description
Technical field:
The present invention relates to the nut and the bolt of fastening piece, specifically is a kind of antitheft abnormity nut and special shaped screw bolt.
Background technique:
Existing fastener nut and bolt head generally all are square or hexagons, this square or hexagonal nut and bolt, because tangible nut of its profile corner angle and bolt, tool using there is not special requirement, as long as wrench or pliers class instrument with resident usefulness, just can finish it is unscrewed or tightens, so very extensive in the use.But nut that this corner angle are fairly obvious and bolt are used on the field facility, as Infrastructure such as railway, bridge, electric power pylon, microwave communication towers, easily by the object of lawless person as theft or destruction.
Therefore, staff development goes out a lot of anti-theft nuts and bolt in the industry.As State Patent Office on December 03rd, 2003 disclosed application number be 02294101.0 utility application, this Patent Law application discloses a kind of anti-theft nut, its technological scheme is: a kind of anti-theft nut, comprise nut, needle roller, needle roller is thin cylindrical body, the endoporus of its nut is stepped shaft, and top is screw, and the bottom is the circular hole greater than screw, this screw sidewall has at least 2 axial needle roller grooves, each needle roller groove circumference in equal parts is provided with, and the cross section of this needle roller groove is wedge shape, along nut precession direction, it is anterior wide that this needle roller groove is, the shape that the rear portion is narrow, bind in this needle roller groove top, and the bottom is communicated with the end face of circular hole, in this needle roller groove, needle roller is housed, retaining is housed in this bottom circular hole leaks packing ring, this grade leaks the endoporus of packing ring greater than screw, and its external diameter and thickness are corresponding with this bottom circular hole.The anti-theft nut of this patent application has theftproof performance and effect preferably, but it exists component more, the tired deficiency that waits of complex structure, equipment.
Summary of the invention:
The technical problem to be solved in the present invention is, a kind of anti-loose anti-theft performance that has is provided, and has antitheft abnormity nut and special shaped screw bolt simple in structure, easy to manufacture simultaneously.
Technical solution of the present invention is that a kind of antitheft abnormity nut and special shaped screw bolt with following structure is provided.
Antitheft abnormity nut of the present invention and special shaped screw bolt, comprise nut body, screwed hole of centre, also comprise bolt shank, bolt head, it is characterized in that: be respectively provided to few three equidistant alternate unidirectional grooves of putting forth effort on the described nut body and on the bolt head, the described unidirectional groove of putting forth effort has a vertical plane and a bottom surface, the described unidirectional vertical plane of putting forth effort groove is the straight wall of warp-wise, straight wall is the precession direction of nut or bolt, described unidirectional bottom surface of putting forth effort groove is a cambered surface, and link to each other with nut body or bolt head outer surface rounding off, make and unidirectionally put forth effort the bottom surface of groove and the outer surface of nut forms round slip surface.
After adopting above structure, compared with prior art, anti-loose anti-theft nut of the present invention and bolt have the following advantages:
Because the present invention is respectively provided to few three equidistant alternate unidirectional grooves of putting forth effort on the cylindrical of nuts and bolt head, the unidirectional groove of putting forth effort has a vertical plane and a bottom surface, the unidirectional vertical plane of putting forth effort groove is straight wall, unidirectional bottom surface of putting forth effort groove is an even surface, and links to each other with nut body or bolt head outer surface rounding off.This structural type, because have only with special instrument, as special sleeve, be provided with the model cavity that matches with nuts and bolt head profile in the sleeve, special jacket casing is on nut or bolt head, model cavity in the sleeve is stuck in unidirectional on nut or the bolt head and puts forth effort on the straight wall of groove, sleeve can only drive nut or bolt head screws the direction rotation, thereby nut or bolt are tightened, if will rotate to screwing out direction, because the unidirectional groove of putting forth effort is not to the Point of Strength that screws out direction, sleeve only can skid off along the unidirectional bottom surface even surface of putting forth effort groove; With other instruments such as wrench commonly used, pliers, nut or bolt can't be screwed out, therefore have good anti-theft effect.Simultaneously, it is simple in structure, and is easy to manufacture, thereby has reduced cost of production.
As improvement, the foundation outline face of described nuts and bolt is set to conical surface.This set can make the conical surface transitional surface of unidirectional level and smooth bottom surface of putting forth effort groove and nut body or bolt head more sliding, makes that the back-out instrument is easier to skid when screwing out, and its anti-theft effect is better.
Described precession direction is a clockwise direction.Clockwise direction is the most frequently used precession direction of screw bolt and nut, meets the standard-required of fastener nut and bolt.
Description of drawings:
Fig. 1 is the special shaped screw bolt schematic representation in antitheft abnormity nut of the present invention and the special shaped screw bolt;
Fig. 2 is the abnormity nut elevational schematic view in antitheft abnormity nut of the present invention and the special shaped screw bolt;
Fig. 3 combines schematic representation with special shaped screw bolt in the antitheft abnormity nut with special shaped screw bolt for the antitheft abnormity nut of the present invention.
Shown in the figure: 1, nut body, 2, screwed hole of centre, 3, bolt shank, 4, bolt head, 5, the unidirectional groove of putting forth effort, 6, vertical plane, 7, the bottom surface, 8, nut body or bolt head outer surface.
Embodiment:
The invention will be further described below in conjunction with the drawings and specific embodiments:
Shown in Figure 1 is special shaped screw bolt in antitheft special shaped screw bolt of the present invention and the special shaped screw bolt, this special shaped screw bolt, comprise bolt shank 3 and bolt head 4, its polymorphic structure is, be that at least three equidistant alternate unidirectional grooves 5 of putting forth effort are set on bolt head 4, the unidirectional groove 5 of putting forth effort of present embodiment setting is five, the unidirectional groove 5 of putting forth effort has a vertical plane 6 and a bottom surface 7, vertical plane 6 meets at right angle with bottom surface 7, the unidirectional vertical plane 6 of putting forth effort groove 5 is the straight wall of warp-wise, straight wall is arranged on the precession direction, described precession direction is a clockwise direction, and unidirectional bottom surface 7 of putting forth effort groove 5 is cambered surface, and links to each other with bolt head 4 outer surfaces 8 rounding ofves, the basic outer surface 8 of present embodiment bolt head is set to the cone face, makes unidirectional bottom surface 7 of the putting forth effort groove 5 face round slip surface more that seems that links to each other with outer surface 8 rounding ofves of bolt head 4;
Fig. 2 has shown the abnormity nut in antitheft abnormity nut and the special shaped screw bolt, antitheft abnormity nut, comprise nut body 1, screwed hole of centre 2, at least three equidistant alternate unidirectional grooves 5 of putting forth effort are set on spiral shell nut body 1, the unidirectional groove 5 of putting forth effort of present embodiment setting is five, the unidirectional groove 5 of putting forth effort has a vertical plane 6 and a bottom surface 7, vertical plane 6 meets at right angle with bottom surface 7, the unidirectional vertical plane 6 of putting forth effort groove 5 is the straight wall of warp-wise, straight wall is arranged on the precession direction, described precession direction is a clockwise direction, unidirectional bottom surface 7 of putting forth effort groove 5 is cambered surface, and with nut outer surface 8 for rounding off links to each other, the basic outer surface 8 of present embodiment nut is set to the cone face, makes unidirectional bottom surface 7 of the putting forth effort groove 5 face round slip surface more that seems that links to each other with the outer surface rounding off of nut;
Shown in Figure 3 is the marriage relation of antitheft abnormity nut and special shaped screw bolt.
When mounted, use special sleeve, be provided with the die cavity that matches with nuts and bolt head profile in the special sleeve, special jacket casing is on nut or bolt head, the straight wall of die cavity body in the sleeve is stuck on nut or the bolt head on the unidirectional straight wall of putting forth effort groove, sleeve can only drive nut or bolt head screws the direction rotation, thereby nut or bolt are tightened.If will rotate to screwing out direction, because the unidirectional groove of putting forth effort does not have to the Point of Strength that screws out direction, sleeve only can skid off along the unidirectional bottom surface even surface of putting forth effort groove; Unscrew or dismantle with other instruments such as wrench commonly used, pliers, same, owing to do not have Point of Strength on nut and the bolt head, wrench or pliers can't screw out nut or bolt, therefore have good anti-theft effect.
Claims (2)
1, a kind of antitheft abnormity nut and special shaped screw bolt, comprise nut body (1), center screw thread (2) bolt shank (3), bolt head (4), it is characterized in that: be respectively provided to few three equidistant alternate unidirectional grooves (5) of putting forth effort on described nut body (1) and the bolt head (4), the described unidirectional groove (5) of putting forth effort has a vertical plane (6) and a bottom surface (7), the described unidirectional vertical plane (6) of putting forth effort groove (5) is straight wall, described unidirectional bottom surface (7) of putting forth effort groove (5) is cambered surface, and with nut body (1) or screw head (4) outer surface (8) for rounding off links to each other, make the unidirectional bottom surface 7 of putting forth effort groove 5 and the outer surface 8 of nut body (1) or screw head (4) form round slip surface.
2, antitheft abnormity nut as claimed in claim 1 and special shaped screw bolt is characterized in that: described nut body (1) is set to conical surface with the foundation outline face of screw head (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101633650A CN101435459A (en) | 2008-12-18 | 2008-12-18 | Anti-theft special-shaped nut and special-shaped bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101633650A CN101435459A (en) | 2008-12-18 | 2008-12-18 | Anti-theft special-shaped nut and special-shaped bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101435459A true CN101435459A (en) | 2009-05-20 |
Family
ID=40710043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101633650A Pending CN101435459A (en) | 2008-12-18 | 2008-12-18 | Anti-theft special-shaped nut and special-shaped bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101435459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697048A (en) * | 2013-10-14 | 2014-04-02 | 芜湖市顺昌汽车配件有限公司 | Anti-theft device and installation and detachment method thereof |
| CN107945421A (en) * | 2017-11-02 | 2018-04-20 | 青岛海尔洗衣机有限公司 | A kind of commercial clothes washer |
-
2008
- 2008-12-18 CN CNA2008101633650A patent/CN101435459A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697048A (en) * | 2013-10-14 | 2014-04-02 | 芜湖市顺昌汽车配件有限公司 | Anti-theft device and installation and detachment method thereof |
| CN107945421A (en) * | 2017-11-02 | 2018-04-20 | 青岛海尔洗衣机有限公司 | A kind of commercial clothes washer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090520 |