CN203189480U - Double-cap anti-theft screw - Google Patents
Double-cap anti-theft screw Download PDFInfo
- Publication number
- CN203189480U CN203189480U CN 201320076866 CN201320076866U CN203189480U CN 203189480 U CN203189480 U CN 203189480U CN 201320076866 CN201320076866 CN 201320076866 CN 201320076866 U CN201320076866 U CN 201320076866U CN 203189480 U CN203189480 U CN 203189480U
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- China
- Prior art keywords
- screw
- cap
- theft
- screw cap
- inserting groove
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- Expired - Fee Related
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Abstract
The utility model discloses a double-cap anti-theft screw. The double-cap anti-theft screw comprises a threaded rod part with external threads and a screw cap part connected at the upper end of the threaded rod part. An in-line shaped driving groove or a cross-shaped driving groove is formed in the upper end face of the screw cap part, the screw cap part is composed of a screw cap upper part and a screw cap lower part which are same in shape and size and are overlapped together up and down, and the driving groove is formed in the upper end face of the screw cap upper part. Two semicircular plugging grooves are formed in the upper end face of the screw cap lower part, the two plugging grooves are in central symmetry relative to the center of the circle of the upper end face of the screw cap lower part, and two plugging blocks which are matched with the plugging grooves in a plugging connection mode are arranged at the positions, corresponding to the plugging grooves, of the lower end face of the screw cap upper part. According to the technical scheme, the double-cap anti-theft screw has a good anti-theft function, connected parts are prevented from being disassembled by other people, and the double-cap anti-theft screw can be widely applied to connecting and fastening of the parts.
Description
Technical field
The utility model belongs to technical field of fastening, is specifically related to a kind of pair of cap anti-theft screw.
Background technique
Traditional fastening screw nail comprises the nut portion that has externally threaded screw part and be connected the screw part upper end, nut portion is interior hexagon, outer-hexagonal shape, square, cylindrical or semicircle, have straight groove or cross recess on it, during use, tighten or unclamp with screw-driver or spanner and get final product.This screw both can be fastening with instrument, also can use same loosening tool, easily is removed, thereby do not have anti-theft feature.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned the deficiencies in the prior art, and a kind of pair of cap anti-theft screw is provided, and it has good anti-theft feature, makes the parts that are connected avoid being disassembled by other people.
The technological scheme that the utility model adopts is: a kind of pair of cap anti-theft screw, comprise the nut portion that has externally threaded screw part and be connected this screw part upper end, the upper-end surface of described nut portion is provided with in-line or criss-cross driver slot, described nut portion is identical with size by shape, and the nut top that overlaps up and down and nut bottom constitute, described driver slot is arranged on the upper-end surface on described nut top, the upper-end surface of described nut bottom is provided with the inserting groove of two semicircles, two inserting grooves are about center, the center of circle, the upper-end surface symmetry of described nut bottom, and the position of the corresponding described inserting groove in the lower end surface on described nut top is provided with two grafting pieces of pegging graft and mating with above-mentioned inserting groove.
As preferably, the height of described grafting piece is consistent with the degree of depth of described inserting groove.
As preferably, the degree of depth of described inserting groove equals half of described nut lower height.
As preferably, the diameter of described inserting groove is greater than the end face radius of described nut bottom.
The beneficial effects of the utility model are: because the utility model adopts technique scheme, can utilize screw-driver or spanner to drive nut top easily, thereby make screw part screw in target object, after the installation, take off nut top, the end face of nut bottom does not arrange driver slot, therefore can not utilize instrument that screw is screwed off, thereby it has good anti-theft feature, makes the parts that are connected avoid being disassembled by other people, can be widely used in the connection of parts fastening in the middle of.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is nut portion structural representation.
Among the figure: 1, screw part; 21, nut top; 22, nut bottom; 3, inserting groove; 4, grafting piece; 5, driver slot.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of pair of cap anti-theft screw, comprise the nut portion that has externally threaded screw part 1 and be connected this screw part 1 upper end, the upper-end surface of described nut portion is provided with in-line or criss-cross driver slot 5, described nut portion is identical with size by shape, and the nut top 21 that overlaps up and down and nut bottom 22 constitute, described driver slot 5 is arranged on the upper-end surface on described nut top 21, the upper-end surface of described nut bottom 22 is provided with the inserting groove 3 of two semicircles, the diameter of described inserting groove 3 is greater than the end face radius of described nut bottom 22, and the degree of depth of inserting groove 3 equals described nut bottom 22 height half, two inserting grooves 3 are about center, the center of circle, the upper-end surface symmetry of described nut bottom 22, the position of the corresponding described inserting groove 3 in the lower end surface on described nut top 21 is provided with two grafting pieces 4 of pegging graft and mating with above-mentioned inserting groove 3, and the height of described grafting piece 4 is consistent with the degree of depth of described inserting groove 3.
Because the utility model adopts technique scheme, can utilize screw-driver or spanner to drive nut top 21 easily, thereby make screw part 1 screw in target object, after the installation, take off nut top 21, the end face of nut bottom 22 does not arrange driver slot 5, therefore can not utilize instrument that screw is screwed off, thereby it has good anti-theft feature, makes the parts that are connected avoid being disassembled by other people, can be widely used in the connection of parts fastening in the middle of.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (4)
1. two cap anti-theft screw, comprise the nut portion that has externally threaded screw part (1) and be connected this screw part (1) upper end, the upper-end surface of described nut portion is provided with in-line or criss-cross driver slot (5), it is characterized in that: described nut portion is identical with size by shape, and the nut top (21) that overlaps up and down and nut bottom (22) constitute, described driver slot (5) is arranged on the upper-end surface on described nut top (21), the upper-end surface of described nut bottom (22) is provided with the inserting groove (3) of two semicircles, two inserting grooves (3) are about center, the center of circle, the upper-end surface symmetry of described nut bottom (22), and the position of the corresponding described inserting groove in the lower end surface on described nut top (21) (3) is provided with two grafting pieces (4) of pegging graft and mating with above-mentioned inserting groove (3).
2. according to claim 1 pair of cap anti-theft screw, it is characterized in that: the height of described grafting piece (4) is consistent with the degree of depth of described inserting groove (3).
3. according to claim 1 pair of cap anti-theft screw is characterized in that: the degree of depth of described inserting groove (3) equals half of described nut bottom (22) height.
4. according to claim 1 pair of cap anti-theft screw, it is characterized in that: the diameter of described inserting groove (3) is greater than the end face radius of described nut bottom (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320076866 CN203189480U (en) | 2013-02-19 | 2013-02-19 | Double-cap anti-theft screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320076866 CN203189480U (en) | 2013-02-19 | 2013-02-19 | Double-cap anti-theft screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189480U true CN203189480U (en) | 2013-09-11 |
Family
ID=49106341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320076866 Expired - Fee Related CN203189480U (en) | 2013-02-19 | 2013-02-19 | Double-cap anti-theft screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189480U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591114A (en) * | 2013-10-28 | 2014-02-19 | 夏卫东 | Anti-theft screw/nut and opening sleeve thereof |
| CN107575464A (en) * | 2017-08-10 | 2018-01-12 | 国家电网公司 | A kind of screw |
| CN108443301A (en) * | 2018-05-07 | 2018-08-24 | 海盐县宏诚标准件有限公司 | A kind of antirust anti-theft screw |
-
2013
- 2013-02-19 CN CN 201320076866 patent/CN203189480U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591114A (en) * | 2013-10-28 | 2014-02-19 | 夏卫东 | Anti-theft screw/nut and opening sleeve thereof |
| CN107575464A (en) * | 2017-08-10 | 2018-01-12 | 国家电网公司 | A kind of screw |
| CN108443301A (en) * | 2018-05-07 | 2018-08-24 | 海盐县宏诚标准件有限公司 | A kind of antirust anti-theft screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20150219 |
|
| EXPY | Termination of patent right or utility model |