CN201318381Y - Novel anti-theft screw and unscrewing spanner employing same - Google Patents
Novel anti-theft screw and unscrewing spanner employing same Download PDFInfo
- Publication number
- CN201318381Y CN201318381Y CNU2008201370754U CN200820137075U CN201318381Y CN 201318381 Y CN201318381 Y CN 201318381Y CN U2008201370754 U CNU2008201370754 U CN U2008201370754U CN 200820137075 U CN200820137075 U CN 200820137075U CN 201318381 Y CN201318381 Y CN 201318381Y
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- Prior art keywords
- theft screw
- novel anti
- theft
- inner hexagonal
- hole
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Abstract
The utility model discloses a novel anti-theft screw and an unscrewing spanner employing the same. The screw head part is provided with an inner hexagon hole, of which the center is provided with an anti-theft pin; and an insertion resistant protrusion is arranged on at least one wall of the inner hexagon hole. Due to the design of the inner hexagon hole and the insertion resistant protrusion, a standard inner hexagon spanner still can not unscrew the anti-theft screw in the case of a damaged pin, namely the anti-theft function even in the case of the invalid anti-theft pin. The special unscrewing spanner provided by the utility model can unscrew not only the novel anti-theft screw but also a standard anti-theft screw.
Description
Technical field
The utility model relates to a kind of novel anti-theft screw and special opening spanner thereof, especially is fit to outdoor cabinet and uses.
Background technique
Firsthand from the market at present anti-theft screw, the structural type that adopts inner hexagonal hole and antitheft pin to make up more, because application is more extensive, extracting tool is more common, and the comparison weakness of antitheft pin design, destroyed easily, these have all weakened anti-theft feature.
Therefore, existing anti-theft screw needs further improvement, to strengthen its theftproof performance.
The model utility content
The purpose of this utility model is to solve the deficiencies in the prior art, the novel anti-theft screw and the special opening spanner thereof that provide a kind of theftproof performance to strengthen.
For this reason, on the one hand, the utility model provides a kind of novel anti-theft screw, and its screw head has inner hexagonal hole, and the center of this inner hexagonal hole has antitheft pin, and wherein, at least one hole wall of inner hexagonal hole is provided with the anti-plug projection.
Wherein, above-mentioned anti-plug projection is arranged on interior two hole walls of facing mutually of inner hexagonal hole.
Wherein, above-mentioned anti-plug projection is positioned at the neutral position of hole wall and runs through whole hole depth and extends.
Wherein, the inscribed circle diameter of above-mentioned inner hexagonal hole is 5.4mm～5.6mm, and the anti-plug projection exceeds the hole wall 0.4mm～0.6mm of inner hexagonal hole, more preferably, the inscribed circle diameter of above-mentioned inner hexagonal hole is 5.5mm, and the anti-plug projection exceeds the hole wall 0.4mm of inner hexagonal hole.
Wherein, above-mentioned anti-plug projection is surperficial curved.
Wherein, above-mentioned anti-plug projection exceeds the hole wall of inner hexagonal hole.
Wherein, above-mentioned anti-theft screw is by stainless steel material Y
1Cr
18Ni
9Whole pier casting is made.
The utility model also provides a kind of special opening spanner of above-mentioned novel anti-theft screw, and the sectional shape of the inner hexagonal hole of the head of this special opening spanner and novel anti-theft screw head is suitable.
Wherein, each side wall surface of the head of special opening spanner has the groove that the anti-plug shape for lugs in the inner hexagonal hole with above-mentioned novel anti-theft screw matches respectively.
Wherein, above-mentioned special opening spanner is the L type, and the two ends of L type special opening spanner have head respectively.
Because the design of inner hexagonal hole and anti-plug projection, under the ruined situation of antitheft pin, the standard inner hexagon spanner still can't be opened anti-theft screw, promptly still has anti-theft feature under antitheft pin loses efficacy.Special opening spanner of the present utility model not only can be opened this above-mentioned novel anti-theft screw, can also open the standard anti-theft screw.
Be noted that the description and the following detailed description all are exemplary, being intended to provides further instruction to desired the utility model.Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below with reference to figure, other purpose, feature and effect of the present utility model is described in further detail.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 shows the plan view according to the utility model one embodiment's novel anti-theft screw;
Fig. 2 shows the sectional view of novel anti-theft screw shown in Figure 1 along the A-A line;
Fig. 3 shows the stereogram of the special opening spanner of novel anti-theft screw shown in Figure 1;
Fig. 4 shows the side view of the special opening spanner of novel anti-theft screw shown in Figure 3;
Fig. 5 shows the schematic representation that the special opening spanner is opened this novel anti-theft screw;
Fig. 6 shows the schematic representation that the standard inner hexagon spanner is opened this novel anti-theft screw;
Fig. 7 shows the schematic representation that standard anti-theft screw hexagonal head wrench (S5) is opened this novel anti-theft screw;
Fig. 8 shows the schematic representation that standard anti-theft screw hexagonal head wrench (S4) is opened this novel anti-theft screw; And
Fig. 9 shows the schematic representation that a word bottle opener is opened this novel anti-theft screw.
Embodiment
Below in conjunction with drawings and Examples the utility model is described.
Fig. 1 shows the plan view according to the utility model one embodiment's novel anti-theft screw, and Fig. 2 shows the sectional view of novel anti-theft screw shown in Figure 1 along the A-A line.As depicted in figs. 1 and 2, the screw head of this novel anti-theft screw 10 has inner hexagonal hole 11, and the center of this inner hexagonal hole has antitheft pin 13, is respectively equipped with anti-plug projection 15 on two hole walls of facing mutually.
In another embodiment, only hole wall of inner hexagonal hole 11 is provided with the anti-plug projection, and in other embodiments, the hole wall more than three or three of inner hexagonal hole 11 is provided with anti-plug projection 15.This anti-plug projection 15 can run through whole hole wall, promptly extends to the bottom surface of inner hexagonal hole from the end face of inner hexagonal hole 11, and certainly, this anti-plug projection 15 also can only be one section anti-plug projection and do not run through whole hole wall.
In a preferred embodiment, screw head diameter design size is 10mm, highly is 5mm, and the inscribed circle diameter of the inner hexagonal hole 11 of this screw head is that 5.5mm, the degree of depth are 3.5mm.This anti-plug projection 15 is positioned at the middle position of hole wall substantially, and exceeds hole wall (reference level) 0.4mm.The antitheft pin diameter at the middle part of inner hexagonal hole 11 is 1.5mm, antitheft crown portion rounding, for example falls the fillet of 0.5mm, to strengthen root.Wherein, syringe needle is lower than screw head end face, for example 1.0mm.Prevent from so effectively to destroy.
Be appreciated that in other embodiments the inscribed circle diameter of the inner hexagonal hole 11 of this screw head can be between 5.4～5.6mm or other scope, the degree of depth of inner hexagonal hole 11 can be selected as required.Anti-plug projection 15 exceeds the distance of hole wall can be between 0.4mm～0.6mm or in other scope.In addition, the diameter of antitheft pin can be adjusted as required.
Fig. 3 shows the stereogram of the special opening spanner of novel anti-theft screw shown in Figure 1, and Fig. 4 shows the side view of the special opening spanner of novel anti-theft screw shown in Figure 3.As shown in the figure, this opens spanner 20 by special tool steel Cr-V hexagonal steel bar material, and Milling Process is shaped after case-carbonizing, quenching with Subsequent tempering integral hardness reach HRC52 °～HRC57 °, copper coating nickel and forming.
Hexagonal rod iron profile is L shaped, its two 21,23 all is the suitable head of sectional shape with the inner hexagonal hole of the head of above-mentioned novel anti-theft screw, promptly has center hole at this head, to hold antitheft pin, be respectively equipped with groove 21A on the wall around this head, so that it is the head of special opening spanner can insert arbitrarily in the inner hexagonal hole, identical with common inner hexagon spanner using method.Match with above preferred embodiment, the rod iron rod footpath that this special opening spanner is used is S5.5.
Fig. 5 shows the schematic representation that the special opening spanner is opened this novel anti-theft screw.As shown in the figure, in the inner hexagonal hole of the screw head of the hexagon-head of special opening spanner insertion novel anti-theft screw, can as common inner hexagon spanner, use.
Antitheft effect with the novel anti-theft screw of preferred embodiment specification describes below.
Fig. 6 shows the schematic representation that the standard inner hexagon spanner is opened this novel anti-theft screw.Because the design of the antitheft pin of anti-theft screw, antitheft pin and common hexagon wrench 30 are interfered in the center region, and the standard inner hexagon spanner can't insert inner hexagonal hole, promptly common inner hexagon spanner is had anti-theft feature.
Fig. 7 shows the schematic representation that standard anti-theft screw hexagonal head wrench (S5) is opened this novel anti-theft screw.As shown in the figure, because the minimum separable between the anti-plug projection of this novel anti-theft screw is 4.7mm, standard anti-theft screw hexagonal head wrench (S5) 40 minimum diameters are 5mm, can't insert the inner hexagonal hole of anti-theft screw, and promptly the standard anti-theft screw hexagonal head wrench to this specification has anti-theft feature.For the novel anti-theft screw greater than the S5 specification also is like this.
Fig. 8 shows the schematic representation that standard anti-theft screw hexagonal head wrench (S4) is opened this novel anti-theft screw.As shown in the figure, because the minimum separable between the anti-plug projection of novel anti-theft screw is 4.7mm, greater than spanner 50 maximum diameter 4.62mm, promptly spanner can not produce moment of torsion, and promptly the standard anti-theft screw hexagonal head wrench to this specification has anti-theft feature.For the novel anti-theft screw less than the S4 specification also is like this.
Fig. 9 shows the schematic representation that a word bottle opener is opened this novel anti-theft screw.As shown in the figure, one word bottle opener, 60 thickness 0.5mm, because the anti-plug rising height is 0.4mm only, and edge chamfer, thereby the anti-plug projection is surperficial curved, under big moment loading, one word bottle opener can cause sliding, moreover, a word bottle opener is inserted along the inner hexagonal hole diagonal, promptly a word bottle opener can't obtain two stable moment loading points in inner hexagonal hole, thereby a word bottle opener is had antitheft effect.
According to this novel anti-theft screw, adopt stainless steel Y
1Cr
18Ni
9-GB/T1220, whole pier casting forms, and has very high strength, and external force is difficult in finite time and the space it is destroyed.And; (1～1.2mm) is big than the diameter of general antitheft pin for the diameter of antitheft pin (1.5mm); the root overstriking of antitheft pin; its root rounding for example; make the intensity of antitheft pin obtain increasing; suitably reduced the height of antitheft pin again,, well protected the shakedown of antitheft pin with the arm of force that reduces destrabilizing moment and the convenience that reduces destruction.In addition, because the design of inner hexagonal hole and anti-plug projection, under the ruined situation of antitheft pin, the standard inner hexagon spanner still can't be opened anti-theft screw, promptly still has anti-theft feature under antitheft pin loses efficacy.
The above is embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (10)
1. novel anti-theft screw, its screw head has inner hexagonal hole, and the center of described inner hexagonal hole has antitheft pin, it is characterized in that, and at least one hole wall of described inner hexagonal hole is provided with the anti-plug projection.
2. novel anti-theft screw according to claim 1 is characterized in that, is respectively equipped with the anti-plug projection on two hole walls of facing mutually of described inner hexagonal hole.
3. novel anti-theft screw according to claim 1 is characterized in that, described anti-plug projection is positioned at the neutral position of described hole wall and runs through whole hole depth extends.
4. according to each described novel anti-theft screw in the claim 1 to 3, it is characterized in that the inscribed circle diameter of described inner hexagonal hole is 5.4mm～5.6mm, described anti-plug projection exceeds the hole wall 0.4mm～0.6mm of inner hexagonal hole.
5. according to each described novel anti-theft screw in the claim 1 to 3, it is characterized in that the head of described antitheft pin is lower than the screw head end face, the root overstriking of described antitheft pin.
6. according to each described novel anti-theft screw in the claim 1 to 3, it is characterized in that described anti-plug projection surperficial curved.
7. novel anti-theft screw according to claim 1 is characterized in that described anti-theft screw is by stainless steel material Y
1Cr
18Ni
9Whole pier casting is made.
8. the special opening spanner as each described novel anti-theft screw in the claim 1 to 7 is characterized in that, the sectional shape of the inner hexagonal hole of the head of described special opening spanner and described novel anti-theft screw head is suitable.
9. the special opening spanner of novel anti-theft screw according to claim 8 is characterized in that, each side wall surface of the head of described special opening spanner has the groove that matches with described anti-plug shape for lugs respectively.
10. the special opening spanner of novel anti-theft screw according to claim 8 is characterized in that, described special opening spanner is the L type, and the two ends of described L type special opening spanner have described head respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201370754U CN201318381Y (en) | 2008-10-20 | 2008-10-20 | Novel anti-theft screw and unscrewing spanner employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201370754U CN201318381Y (en) | 2008-10-20 | 2008-10-20 | Novel anti-theft screw and unscrewing spanner employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318381Y true CN201318381Y (en) | 2009-09-30 |
Family
ID=41197146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201370754U Expired - Lifetime CN201318381Y (en) | 2008-10-20 | 2008-10-20 | Novel anti-theft screw and unscrewing spanner employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318381Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012152015A1 (en) * | 2011-07-19 | 2012-11-15 | 中兴通讯股份有限公司 | Anti-theft screw and wrench |
| CN104074857A (en) * | 2014-07-10 | 2014-10-01 | 常熟市迎江机械有限公司 | Safe anti-theft nut |
| CN112024695A (en) * | 2020-08-24 | 2020-12-04 | 苏州萨伯工业设计有限公司 | Inner polyhedron manufacturing method based on punching process |
-
2008
- 2008-10-20 CN CNU2008201370754U patent/CN201318381Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012152015A1 (en) * | 2011-07-19 | 2012-11-15 | 中兴通讯股份有限公司 | Anti-theft screw and wrench |
| CN104074857A (en) * | 2014-07-10 | 2014-10-01 | 常熟市迎江机械有限公司 | Safe anti-theft nut |
| CN112024695A (en) * | 2020-08-24 | 2020-12-04 | 苏州萨伯工业设计有限公司 | Inner polyhedron manufacturing method based on punching process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |