CN201062615Y - Spherical-concave anti-theft screw for license plates - Google Patents
Spherical-concave anti-theft screw for license plates Download PDFInfo
- Publication number
- CN201062615Y CN201062615Y CNU2007200789249U CN200720078924U CN201062615Y CN 201062615 Y CN201062615 Y CN 201062615Y CN U2007200789249 U CNU2007200789249 U CN U2007200789249U CN 200720078924 U CN200720078924 U CN 200720078924U CN 201062615 Y CN201062615 Y CN 201062615Y
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- CN
- China
- Prior art keywords
- screw
- nut
- inner bolt
- internal screw
- thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a screw part of a fastener, in particular to a spherical concave surface vehicle license plate anti-theft screw, which consists of an internal screw and an external nut which are combined together. The utility model is characterized in that the utility model is provided with the internal screw for playing the fastening function, and the profile of the internal screw is a round head spherical concave surface bolt formed by combining upper and lower concentric screw rods with different diameters, the cap of the internal screw is embedded into the circular groove of the external nut, the thread of the thicker upper screw rod is fine thread left-hand shallow thread matched with the external nut, the external nut is a short lived nut only playing the function of driving the fastening of the internal screw, and has the profile of a hexagonal nut, fine left-hand female thread matched with the upper screw rod of the internal screw is arranged in the middle hole of the external nut, and the locking intensity is lower than the locking intensity of the internal screw and the matched locking nut. When being used, the internal screw is firstly installed into the external nut, and screwed down to be a sleeved combined screw. After being installed into the locking nut, the combined screw is screwed down through a spanner, when the rated torque is achieved, the thread of the short lived nut is destroyed and slipped, and can only slide on the periphery of the internal screw, and the internal fastening screw can not be disassembled any more with conventional methods and tools.
Description
Technical field
The utility model relates to a kind of screw part, especially license plate of fastening piece and decorates anti-theft screw.
Background technique
At present, known conventional screw is convenient to loading and unloading because of it, also is convenient to the theft of crime one's share of expenses for a joint undertaking and destroys; Some have the screw of anti-theft feature, are 0420098372.4,02153416.0 anti-theft screw as the patent No., but lack decorative artistic effect.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model provides a kind of ball impression face license plate anti-theft screw, just can reach purpose not only antitheft but also attractive in appearance.
The technical scheme in the invention for solving the technical problem is: the ball impression face license plate anti-theft screw that is combined by inner bolt and outer nut, it is characterized in that: the inner bolt of fastening effect together is set, external form is for two saving the snap bolt that the concentric different screw combinations of diameter forms up and down, its cap embeds the circular groove of outer nut, the thick screw flight of last joint, be the left-handed shallow thread of closely-pitched with the outer nut coupling. outer nut is only to work the short-lived nut that drives the fastening effect of inner bolt, the same hexagon nut of external form, mesopore be with inner bolt on the left-handed box thread of closely-pitched of joint screw rod coupling, its locking intensity is lower than the locking intensity of the nut of inner bolt and supporting locking. and elder generation is with inner bolt during use, the outer nut of packing into screws into a suit screw assemblies.This screw assemblies is packed into and is tightened by spanner behind the locking nut, when reaching rated torque, short-lived nut thread destroys stripped thread, can only skid in the inner bolt periphery, just again interior fastening screw trip bolt can't be unloaded with conventional means and instrument, to reach antitheft purpose. the bolt head cap with inner bolt covers in addition, be arranged to ball impression face end socket, available stainless steel or colored plastic, light not only attractive in appearance is gorgeous but also can't be with the dismounting of conventional tool holder, and that plays that general anti-theft screw can't play has a coloured decorating action of light.
The beneficial effects of the utility model are: simple in structure, tamper robber is functional, ornamental by force, cost is low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is an inner bolt panorama schematic representation, and Fig. 2 is an outer nut panorama schematic representation, and Fig. 3 is that the inner bolt master looks schematic representation, and Fig. 4 is that outer nut is dissected schematic representation, and Fig. 5 is that the screw assemblies that is assembled into is dissected schematic representation, and Fig. 6 is a schematic top plan view.
The cylindrical cap of the planar end socket of the ball impression of 1. inner bolts among the figure, 2. with the left-handed shallow thread of closely-pitched of outer nut coupling, 3. with the coarse thread of locking nut coupling, 4. with inner bolt round end cap interior circular groove movingly, 5. with the left-handed box thread of closely-pitched of inner bolt coupling.
Embodiment
In the drawings, the inner bolt of fastening effect together is set, external form is for two saving the snap bolt that the concentric different screw combinations of diameter forms up and down, its cap embeds the circular groove (4) of outer nut, the thick screw flight of last joint, be the left-handed shallow thread of closely-pitched (2) with the outer nut coupling. outer nut is only to work the short-lived nut that drives the fastening effect of inner bolt, the same hexagon nut of external form, mesopore be with inner bolt on the left-handed box thread of closely-pitched (5) of joint screw rod coupling, its locking intensity is lower than the locking intensity of the nut of inner bolt and supporting locking. and elder generation is with inner bolt during use, the outer nut of packing into screws into a suit screw assemblies.This screw assemblies is packed into and is tightened by spanner behind the locking nut, when reaching rated torque, short-lived nut thread destroys stripped thread, can only skid in the inner bolt periphery, just again interior fastening screw trip bolt can't be unloaded with conventional means and instrument, to reach antitheft purpose. the bolt head cap with inner bolt covers in addition, be arranged to ball impression face end socket, available stainless steel or colored plastic, light not only attractive in appearance is gorgeous but also can't be with the dismounting of conventional tool holder, and that plays that general anti-theft screw can't play has a coloured decorating action of light.
Claims (3)
1. ball impression face license plate anti-theft screw, combine by inner bolt and outer nut, it is characterized in that: the inner bolt of fastening effect together is set, external form is for two saving the round end sphere bolt that the concentric different screw combinations of diameter forms up and down, the thick screw flight of last joint, it is the left-handed shallow thread of closely-pitched (2) with the outer nut coupling, outer nut is only to work the short-lived nut that drives the fastening effect of inner bolt, the same hexagon nut of external form, mesopore be with inner bolt on the left-handed box thread of closely-pitched (5) of joint screw rod coupling, its locking intensity is lower than the locking intensity of the nut of inner bolt and supporting locking.
2. by the described ball impression face license plate anti-theft screw of claim 1, it is characterized in that: the circular cap cover of inner bolt, the circular groove (4) of embedding outer nut.
3. by the described ball impression face license plate anti-theft screw of claim 1, it is characterized in that: the bolt head cap lid of its inner bolt, be arranged to ball impression face end socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200789249U CN201062615Y (en) | 2007-03-30 | 2007-03-30 | Spherical-concave anti-theft screw for license plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200789249U CN201062615Y (en) | 2007-03-30 | 2007-03-30 | Spherical-concave anti-theft screw for license plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062615Y true CN201062615Y (en) | 2008-05-21 |
Family
ID=39450990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200789249U Expired - Fee Related CN201062615Y (en) | 2007-03-30 | 2007-03-30 | Spherical-concave anti-theft screw for license plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062615Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359474A (en) * | 2011-10-26 | 2012-02-22 | 长春轨道客车股份有限公司 | Vehicle-mounted advisement frame installation bolt |
-
2007
- 2007-03-30 CN CNU2007200789249U patent/CN201062615Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359474A (en) * | 2011-10-26 | 2012-02-22 | 长春轨道客车股份有限公司 | Vehicle-mounted advisement frame installation bolt |
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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: 20080521 |