CN2690651Y - Anti-loose screw - Google Patents
Anti-loose screw Download PDFInfo
- Publication number
- CN2690651Y CN2690651Y CN 200320107955 CN200320107955U CN2690651Y CN 2690651 Y CN2690651 Y CN 2690651Y CN 200320107955 CN200320107955 CN 200320107955 CN 200320107955 U CN200320107955 U CN 200320107955U CN 2690651 Y CN2690651 Y CN 2690651Y
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- China
- Prior art keywords
- screw
- utility
- model
- projection
- plane
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- 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 - Lifetime
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to an anti-loose screw and is characterized in that the end part of the screw is provided with a lug and a bevel. Because the utility model is provided with the lug and the bevel on the end part of the screw, when the existing turn screw (screwdriver) clockwise rotates under the exogenic action, and as the lug exists, the screw is able to be tightly screwed. When the turn screw anticlockwise rotates under the exogenic action, because of the bevel, the turn screw automatically exits, which causes the screw to be unable to be loosed, and only a special tool is able to open the screw. The utility model can be widely used for electric meters, which raises the difficulty of electric larceny, prohibits the occurrence of the electric larceny phenomenon in a certain degree, and is an effective action for electric larceny resistance.
Description
Technical field:
The utility model relates to the technical field of screw, specifically a kind of anti-loosening screw that prevents that counter clockwise direction from unscrewing.
Background technique:
Screw of the prior art mainly comprises the end and the screw section of screw, and the end of screw mostly is tack or round end shape and in-line or cross groove are set in the end, be commonly called as thread screw or round head bolt, this class screw can be tightened clockwise, can unscrew counterclockwise again, in the society some often utilize this deficiency of screw, the screw of ammeter is unscrewed carried out stealing, and serious stealing electricity phenomenon is gone up by society, has influenced national fiscal revenues and economic benefit of enterprises.
Summary of the invention:
The purpose of this utility model is to provide a kind of anti-loosening screw, and it can prevent to utilize existing turn screw to unscrew screw.
To achieve these goals, the technical solution of the utility model is: anti-loosening screw, it mainly comprises the end and the screw section of screw, it is characterized in that: the place, end of described screw is provided with projection and inclined-plane.
The utility model is provided with projection and inclined-plane because of the place, end at screw, when existing turn screw (screw-driver) clockwise direction rotation under external force, because the existence of projection, screw can be stubborn more tight more, when counterclockwise rotating under the effect of turn screw in external force, because the factor on inclined-plane, turn screw can withdraw from automatically, screw can't be become flexible, must could open by special tool, the utility model can be extensively because ammeter have improved the difficulty of stealing, can prevent the generation of stealing electricity phenomenon to a certain extent, also be a comparatively effectively measures of anti-stealing electricity.
Description of drawings:
Fig. 1 is the utility model embodiment's a schematic representation
Fig. 2 is the side view of Fig. 1
Embodiment:
The utility model will be further described below in conjunction with drawings and Examples.
The utility model mainly comprises the end 1 and the screw section 2 of screw, it is characterized in that: 1 place, end of described screw is provided with projection 3 and inclined-plane 5, be provided with two projections 3 and two inclined-planes 5 at 1 place, end of screw in the enforcement, the projection of present embodiment is approximate to be fan-shaped, folder one inclined-plane between two projections; The area of two projections is identical, and the area on two inclined-planes is also identical, and is symmetrical distribution, and one side of projection is for facing shape or groove directly, and the another side of projection is an inclined plane shape, and the angle on inclined-plane is the 5-45 degree.Promptly can make turn screw clockwise direction under the effect of external force stubborn more tight more for the projection place that faces shape or groove shape directly of cliff class on one side, and the place, inclined-plane of projection another side withdraws from when turn screw is rotated in the counterclockwise direction, screw can't be become flexible, for the ease of lead sealing, present embodiment is established a through hole 4 at 1 place, end of screw.
Claims (5)
1, anti-loosening screw, it mainly comprises the end and the screw section of screw, it is characterized in that: the place, end of described screw is provided with projection and inclined-plane.
2, anti-loosening screw according to claim 1 is characterized in that: the place, end at screw is provided with two projections and two inclined-planes.
3, anti-loosening screw according to claim 1 and 2 is characterized in that: projection is approximate to be fan-shaped, folder one inclined-plane between two projections.
4, anti-loosening screw according to claim 1 and 2 is characterized in that: one side of projection is for facing shape or groove directly, and the another side of projection is an inclined plane shape, and the angle on inclined-plane is the 5-45 degree.
5, anti-loosening screw according to claim 1 and 2 is characterized in that: the place, end at screw establishes a through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107955 CN2690651Y (en) | 2003-11-11 | 2003-11-11 | Anti-loose screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107955 CN2690651Y (en) | 2003-11-11 | 2003-11-11 | Anti-loose screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2690651Y true CN2690651Y (en) | 2005-04-06 |
Family
ID=34661626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320107955 Expired - Lifetime CN2690651Y (en) | 2003-11-11 | 2003-11-11 | Anti-loose screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2690651Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536996A (en) * | 2012-02-21 | 2012-07-04 | 邯郸供电公司 | Anti-withdrawing bolt |
| CN103982508A (en) * | 2014-04-16 | 2014-08-13 | 国家电网公司 | Antiskid anti-theft screw |
-
2003
- 2003-11-11 CN CN 200320107955 patent/CN2690651Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536996A (en) * | 2012-02-21 | 2012-07-04 | 邯郸供电公司 | Anti-withdrawing bolt |
| CN103982508A (en) * | 2014-04-16 | 2014-08-13 | 国家电网公司 | Antiskid anti-theft screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI DYNAMOMETER INSTRUMENT TECHNOLOGY SERVICE Free format text: FORMER OWNER: SHANGHAI CHENYUAN SCIENCE DEVELOPMENT CO., LTD. Effective date: 20091127 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091127 Address after: No. 1758 Tian Shan Road, Shanghai, 200051 Co-patentee after: Shanghai electric energy economic and Trade Co., Ltd. Patentee after: Shanghai electric meter technical service company Address before: No. 1758 Tian Shan Road, Shanghai, 200051 Co-patentee before: Shanghai electric energy economic and Trade Co., Ltd. Patentee before: Shanghai Chen Yuan Science and Technology Development Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131111 Granted publication date: 20050406 |