CN201330789Y - Flat-top non-slot anti-theft screw and screw driver - Google Patents
Flat-top non-slot anti-theft screw and screw driver Download PDFInfo
- Publication number
- CN201330789Y CN201330789Y CNU2009200787079U CN200920078707U CN201330789Y CN 201330789 Y CN201330789 Y CN 201330789Y CN U2009200787079 U CNU2009200787079 U CN U2009200787079U CN 200920078707 U CN200920078707 U CN 200920078707U CN 201330789 Y CN201330789 Y CN 201330789Y
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- CN
- China
- Prior art keywords
- screw
- screw rod
- sleeve
- flat
- theft
- 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 hardware tool, especially relates to a flat-top non-slot anti-theft screw and its screw driver. The screw has an oblate cylinder-shaped top, the top surface of which is a plane with no recess or embossment; the screw driver is composed of a grab handle, a screw rod, a fastening screw cap, a rotor wing and a sleeve; the sleeve is a truncated cone cylinder formed by three curved surfaces with an angle of 120 DEG C in a plane; the upper end of the sleeve is coaxially integrated with the screw rod; the fastening screw cap is sleeved on the screw rod, being in a screw connection with the screw rod; the rotor wing is soldered on the side of the fastening screw cap. Because the screw can be screwed out only by the special screw driver, the utility model can be used in specific sites with high anti-theft requirements, greatly improving the security of connecting elements comparing to the existing common screws.
Description
Technical field
The utility model relates to a kind of hardware ﹠ tools, particularly relates to a kind of flat-top slotless anti-theft screw and revolves tool.
Background technique
The head end of conventional screw generally has straight groove, steps on instrument with screw-driver and is placed in one, and rotary screw is carried out fastening or spin-up.In addition, for convenience multiple instrument of some screw uses, and as the use of needle-nose pliers, spanner etc., regular hexagon is made in the screw terminal outer.Make screw have more versatility like this, made things convenient for user's use.But in some specific occasion, require screw to screw after, must not arbitrarily dismantle without approval, to prevent article lost in the fastened device or stolen, existing screw can't satisfy this requirement.
The model utility content
The utility model is for solving the deficiencies in the prior art, and providing a kind of can only and revolve tool by the flat-top slotless anti-theft screw of special tool spin-up.
The scheme that solves the utility model technical problem is: the top of flat-top slotless anti-theft screw is oblate cylindricality, and the end face of this oblate post is the plane, does not have any recessed or protruding.Revolving tool is made of lever, screw rod, fastening nut, rotor and sleeve.Wherein screw rod and lever are cylindrical and are an integral body of concentric.Sleeve is a up-small and down-big frustoconic shape cylindrical shell of being made up of three curved surfaces that become 120 ° of arcs in the plane, the upper end of sleeve and screw rod are integral body and concentric, the outer diameter of sleeve upper end is identical with the diameter of screw rod, and all there is screw thread in the outside of screw rod and sleeve.Fastening nut is placed on the screw rod, combines with screw thread with screw rod, and the side of fastening nut is welded with rotor, and rotor passes the two-section round bar in the center of circle of fastening nut for the shaft axis elongation line.
In the time of need screwing or unscrew flat-top slotless anti-theft screw, only need elder generation that the end opening of sleeve is enclosed within on the oblate post at flat-top slotless anti-theft screw top, with the hands or spanner by rotor fastening nut is turned clockwise, fastening nut promptly moves downward, because the outside of sleeve has a tapering from top to bottom, under the lock ring effect of fastening nut, the end opening of sleeve is tight with the oblate tie at flat-top slotless anti-theft screw top.Can rotate freely flat-top slotless anti-theft screw this moment by the rotation lever.
Adopt such scheme, can reach following effect:
Since flat-top slotless anti-theft screw can only by its special use revolve the tool spin-up, can be used for the specific occasion of having relatively high expectations to antitheft, compare with existing plain screw, the Security that is connected structure is improved greatly.
Description of drawings
Fig. 1 is the structural representation of flat-top slotless anti-theft screw;
Fig. 2 is the structural representation that revolves tool;
Fig. 3 is the worm's eye view of Fig. 2.
Among the figure: 1. flat-top slotless anti-theft screw 2. levers 3. screw rods 4. fastening nuts 5. rotors 6. sleeves
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
The top of flat-top slotless anti-theft screw 1 is oblate cylindricality, and the end face of this oblate post is the plane, does not have any recessed or protruding.
Revolving tool is made of lever 2, screw rod 3, fastening nut 4, rotor 5 and sleeve 6.Wherein screw rod 3 is cylindrical with lever 2 and is an integral body of concentric.Sleeve 6 is up-small and down-big frustoconic shape cylindrical shells of being made up of three curved surfaces that become 120 ° of arcs in the plane, the upper end of sleeve 6 and screw rod 3 are integral body and concentric, the outer diameter of sleeve 6 upper ends is identical with the diameter of screw rod 3, and all there is screw thread in the outside of screw rod 3 and sleeve 6.Fastening nut 4 is placed on the screw rod 3, combines with screw thread with screw rod 3, and the side of fastening nut 4 is welded with rotor 5, and rotor 5 passes the two-section round bar in the center of circle of fastening nut 4 for the shaft axis elongation line.In the time of need screwing or unscrew flat-top slotless anti-theft screw 1, only need elder generation that the end opening of sleeve 6 is enclosed within on the oblate post at flat-top slotless anti-theft screw 1 top, with the hands or spanner by rotor 5 fastening nut 4 is turned clockwise, fastening nut 4 promptly moves downward, because the outside of sleeve 6 has a tapering from top to bottom, under the lock ring effect of fastening nut 4, the end opening of sleeve 6 is tight with the oblate tie at flat-top slotless anti-theft screw 1 top.Can rotate freely flat-top slotless anti-theft screw 1 this moment by rotation lever 2.
Claims (1)
1. a flat-top slotless anti-theft screw and revolve tool, it is characterized in that: the top of flat-top slotless anti-theft screw is oblate cylindricality, the end face of this oblate post is the plane, do not have any recessed or protruding, revolve tool by lever, screw rod, fastening nut, rotor and sleeve constitute, wherein screw rod and lever are cylindrical and are an integral body of concentric, sleeve is a up-small and down-big frustoconic shape cylindrical shell of being made up of three curved surfaces that become 120 ° of arcs in the plane, the upper end of sleeve and screw rod are integral body and concentric, the outer diameter of sleeve upper end is identical with the diameter of screw rod, all there is screw thread in the outside of screw rod and sleeve, fastening nut is placed on the screw rod, combine with screw thread with screw rod, the side of fastening nut is welded with rotor, and rotor passes the two-section round bar in the center of circle of fastening nut for the shaft axis elongation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200787079U CN201330789Y (en) | 2009-01-16 | 2009-01-16 | Flat-top non-slot anti-theft screw and screw driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200787079U CN201330789Y (en) | 2009-01-16 | 2009-01-16 | Flat-top non-slot anti-theft screw and screw driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330789Y true CN201330789Y (en) | 2009-10-21 |
Family
ID=41224169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200787079U Expired - Fee Related CN201330789Y (en) | 2009-01-16 | 2009-01-16 | Flat-top non-slot anti-theft screw and screw driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201330789Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128685A (en) * | 2011-11-25 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Screw withdrawal tool |
| CN103128492A (en) * | 2011-11-25 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Preparation technology of screw withdrawal tool |
-
2009
- 2009-01-16 CN CNU2009200787079U patent/CN201330789Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128685A (en) * | 2011-11-25 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Screw withdrawal tool |
| CN103128492A (en) * | 2011-11-25 | 2013-06-05 | 苏州工业园区协诚精密五金有限公司 | Preparation technology of screw withdrawal tool |
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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: 20091021 Termination date: 20110116 |