CN203067499U - Electroplated threaded anti-theft fastener - Google Patents
Electroplated threaded anti-theft fastener Download PDFInfo
- Publication number
- CN203067499U CN203067499U CN 201320054907 CN201320054907U CN203067499U CN 203067499 U CN203067499 U CN 203067499U CN 201320054907 CN201320054907 CN 201320054907 CN 201320054907 U CN201320054907 U CN 201320054907U CN 203067499 U CN203067499 U CN 203067499U
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- China
- Prior art keywords
- nut
- bolt
- electroplated
- fastening piece
- thread
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Abstract
The utility model discloses an electroplated threaded fastener, and aims at providing an electroplated threaded fastener which has the advantages of simple structure, few components, low manufacturing cost, good corrosion resistance and the like. The electroplated threaded anti-theft fastener adopts the technical scheme that the electroplated threaded anti-theft fastener comprises a nut and a bolt, wherein internal screw threads are formed in an inner hole of the nut and matched with external screw threads on the bolt; the nut and a bolt tail are in frustum cone shapes; clamp grooves are formed in external walls of the nut and the bolt tail; a plurality of bulges are arranged on side walls of threads, close to the outer end face of the nut, of the internal screw threads of the nut, and uniformly distributed on pitch side walls of the internal screw threads at intervals. The clamp grooves formed in the external walls of the nut and the bolt tail are longitudinal triangular grooves, correspond to each other one by one and are used for fastening and releasing. The bulges on the side walls of the threads of the internal screw threads are triangular and have a pitch narrowing effect. The nut, the bolt and the bolt tail are subjected to electrolytic treatment, and uniform metal protection layers are formed on the internal and external surfaces.
Description
Technical field
The utility model belongs to technical field of fastening, is specifically related to a kind of special-purpose anti-theft fastening piece that uses special tool just can loosen, tighten of being made up of nut and bolt.
Background technique
Fastening piece also claims standard piece, is to be fastenedly connected with and to use class mechanical parts very widely.On various machineries, equipment, boats and ships, railway, bridge, building, structure, instrument, instrument, instrument and articles for use etc., can see fastening piece miscellaneous.Its feature is that description is various, and the performance purposes is different, and standardization, seriation, unitized degree are also high.Different occasions, also different for the performance requirement of fastening piece, but at some special occasions, have an antitheft problem toward contact.And the common fault of the fastening piece on the existing market namely is loosening easily behind the fastening object, and user's property is easily stolen, causes economic loss.In addition, for realizing the performance of struggling against the corrosive influence of fastening piece, usually fastening piece adopts stainless steel, aluminum alloy and titanium alloy material, but the defective of this metalloid alloy material is, it is surperficial when impaired, can produce the thin oxide layer of one deck on the top layer and prevent corrosion, and when fastening piece is tightly locked, pressure between the tooth line and heat then can destroy this layer oxide film, make metal threaded to take place to block or shear, and then sticking together phenomenon, permanent back fastening piece just can can't be dismantled or continue and lock by locked fully or kill.
Summary of the invention
Deficiency at above-mentioned technology, the utility model aims to provide the anti-theft fastening piece after the novel also process plating of a kind of structure, this fastening piece not only can realize adopting the purpose of special tool degree of tightness fastening piece, and has the advantages that to relate to few, the simple in structure and low cost of manufacture of parts.Simultaneously, this fastening piece is through electrolytic treatments, and species precipitate such as metal or alloy is amassed at product surface, thus form one deck evenly, fine and close, the preferable metal layer film of combination force, improve the corrosion resisting property of fastening piece, also play the effect of protection, decorating action and reparation size simultaneously.
For achieving the above object, the technological scheme that the utility model adopts is: electroplate the screw thread anti-theft fastening piece, formed by nut and bolt, in the nut endoporus internal thread is arranged, with the outside thread coupling on the bolt, nut and bolt tail are truncated cone, and both are equipped with draw-in groove on the outer wall, described nut internal thread has a plurality of projectioies, interruption-like being evenly distributed on the internal thread spiral shell square sidewall near on several the thread sidewalls of nut exterior edge face.
The draw-in groove that nut and bolt tail outer wall are provided with is vertical triangular groove, and corresponding one by one, uses for degree of tightness.Projection on the internal thread thread sidewall is the triangle projection, play with the stenosis of spiral shell square narrow effect.Nut, bolt and bolt tail all pass through electrolytic treatments, and inner and outer surface is formed with the layer of even coat of metal.
The beneficial effects of the utility model are, structure is novel simple, several thread sidewalls by the outside of the internal thread in the nut endoporus arrange triangular hill, make that the stenosis of local spiral shell square is narrow, when the externally threaded thread of bolt behind the narrow internal thread of the local spiral shell square of precession under instrumental purpose stenosis, the triangle projection is killed the outside thread thread tightly, makes nut be screwed in more closely with the fastening piece of bolt than general structure.When unscrewing, if independent turn nut, bolt will rotate thereupon, thereby plays antitheft effect.Simultaneously; nut and bolt top layer are through electroplating; form the layer of metal protective layer; can significantly improve the corrosion resisting property of fastening piece; avoid stopping up after the oxidation of General fasteners metal surface; make the locked fully phenomenon of fastening piece occur, also play the effect of protection, decorating action and rebuild part size simultaneously.
The utlity model has simple in structure, to relate to parts few, low cost of manufacture, the advantage of fine corrosion resistance.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model nut.
Among the figure, 1-nut, 2-bolt, 3-outside thread, 4-internal thread, 5-nut exterior edge face, 6-bolt tail, 7-draw-in groove, 8-spiral shell square, 9-projection.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Among the embodiment shown in the figure, a kind of plating screw thread anti-theft fastening piece, formed by nut 1 and bolt 2, in nut 1 endoporus internal thread 4 is arranged, with outside thread 3 couplings on the bolt 2, nut 1 and bolt tail 6 are truncated cone, and both are equipped with draw-in groove 7 on the outer wall, described nut 1 internal thread 4 is a plurality of protruding 9 near having on several the thread sidewalls of nut exterior edge face 5, interruption-like being evenly distributed on internal thread 4 spiral shell squares 8 sidewalls.The draw-in groove 7 that nut 1 and bolt tail 6 outer walls are provided with is vertical triangular groove, and corresponding one by one, uses for degree of tightness.Projection 9 on the internal thread 4 thread sidewalls is the triangle projection, play with 8 stenosis of spiral shell square narrow effect.Nut 1, bolt 2 and bolt tail 6 all pass through electrolytic treatments, and inner and outer surface is formed with the layer of even coat of metal.
Claims (4)
1. electroplate the screw thread anti-theft fastening piece for one kind, formed by nut and bolt, it is characterized in that, in the described nut endoporus internal thread is arranged, with the outside thread coupling on the bolt, nut and bolt tail are truncated cone, and both are equipped with draw-in groove on the outer wall, described nut internal thread has a plurality of projectioies, interruption-like being evenly distributed on the internal thread spiral shell square sidewall near on several the thread sidewalls of nut exterior edge face.
2. plating screw thread anti-theft fastening piece according to claim 1 is characterized in that, the draw-in groove that described nut and bolt tail outer wall are provided with is vertical triangular groove, and corresponding one by one, uses for degree of tightness.
3. plating screw thread anti-theft fastening piece according to claim 1 is characterized in that, the projection on the described internal thread thread sidewall is the triangle projection, play with the stenosis of spiral shell square narrow effect.
4. plating screw thread anti-theft fastening piece according to claim 1 is characterized in that described nut, bolt and bolt tail all pass through electrolytic treatments, and inner and outer surface is formed with the layer of even coat of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320054907 CN203067499U (en) | 2013-01-31 | 2013-01-31 | Electroplated threaded anti-theft fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320054907 CN203067499U (en) | 2013-01-31 | 2013-01-31 | Electroplated threaded anti-theft fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067499U true CN203067499U (en) | 2013-07-17 |
Family
ID=48766289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320054907 Expired - Fee Related CN203067499U (en) | 2013-01-31 | 2013-01-31 | Electroplated threaded anti-theft fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067499U (en) |
-
2013
- 2013-01-31 CN CN 201320054907 patent/CN203067499U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20140131 |