CN201031863Y - Spherical surface automobile license tag tubular shape antitheft screw nail - Google Patents
Spherical surface automobile license tag tubular shape antitheft screw nail Download PDFInfo
- Publication number
- CN201031863Y CN201031863Y CNU2007200791234U CN200720079123U CN201031863Y CN 201031863 Y CN201031863 Y CN 201031863Y CN U2007200791234 U CNU2007200791234 U CN U2007200791234U CN 200720079123 U CN200720079123 U CN 200720079123U CN 201031863 Y CN201031863 Y CN 201031863Y
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- CN
- China
- Prior art keywords
- bolt
- nut
- internal
- inner bolt
- screw
- 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 the bolt part of a fastener; the tubular anti-theft bolt for the spherical automobile plate consists of an internal bolt and an external nut and the utility model is characterized in that the internal bolt is arranged for fastening, the shape of the internal bolt is a round head bolt which consists of the combined upper and lower sections of concentric screw rods, the diameters of which are different; the internal bolt cap is embedded into the circular groove of an external nut; the upper section is equipped with thick screw rod threads which are matched with fine left-hand shallow threads arranged on the external nut; the external nut is a disposable nut which can only drive an internal bolt to be fastened and the shape is a tubular one; a central hole is equipped with fine left-hand female threads which are matched with the upper section of screw rod of the internal bolt; the locking strength is lower than that of the internal bolt and a matched locking nut; the internal bolt is arranged in the external nut in use and then screwed down to form a nested combined bolt; the combined bolt is arranged in the locking nut and screwed down by a pipe wrench; when the rated torque is reached, the disposable nut threads destroy sliding wires and can only skid around the internal bolt; in this way, the internal fastening bolt can not be dismantled with conventional method 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 spherical surface vehicle license tube type 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 spherical surface vehicle license tube type 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 is 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, external form is a tubulose, 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 pipe wrench 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 the sphere 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 spherical shape end socket of 1. inner nuts among the figure is 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, external form is a tubulose, 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 pipe wrench 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 the sphere 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. spherical surface vehicle license tube type 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 spiral shell inspection 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, external form is a tubulose, 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 spherical surface vehicle license tube type anti-theft screw of claim 1, it is characterized in that: the bolt head cap lid of its inner bolt, be arranged to the sphere end socket.
3. by the described spherical surface vehicle license tube type anti-theft screw of claim 1, it is characterized in that: the sphere circular cap cover of inner bolt, the circular groove (4) of embedding outer nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200791234U CN201031863Y (en) | 2007-04-13 | 2007-04-13 | Spherical surface automobile license tag tubular shape antitheft screw nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200791234U CN201031863Y (en) | 2007-04-13 | 2007-04-13 | Spherical surface automobile license tag tubular shape antitheft screw nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031863Y true CN201031863Y (en) | 2008-03-05 |
Family
ID=39163755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200791234U Expired - Fee Related CN201031863Y (en) | 2007-04-13 | 2007-04-13 | Spherical surface automobile license tag tubular shape antitheft screw nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031863Y (en) |
-
2007
- 2007-04-13 CN CNU2007200791234U patent/CN201031863Y/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: 20080305 |