CN201339639Y - Single-screwing direction nut - Google Patents
Single-screwing direction nut Download PDFInfo
- Publication number
- CN201339639Y CN201339639Y CNU2009200787083U CN200920078708U CN201339639Y CN 201339639 Y CN201339639 Y CN 201339639Y CN U2009200787083 U CNU2009200787083 U CN U2009200787083U CN 200920078708 U CN200920078708 U CN 200920078708U CN 201339639 Y CN201339639 Y CN 201339639Y
- Authority
- CN
- China
- Prior art keywords
- nut
- straight
- arc limit
- straight flange
- tangent
- 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 an ironware part, in particular to a single-screwing direction nut which is composed of a screw hole, straight sides and arc sides. Wherein the screw hole is in the center of the nut; two straight sides are in parallel; each straight side is tangent to adjacent arc side in counter-clockwise direction. The included angle of the tangent of the arc side in the intersection point of the straight side and the adjacent arc side in clockwise direction, and the straight side is not less than 45degrees. As the utility model realizes that the nut only can be rotated by a spanner clockwise and cannot be rotated counter-clockwise, the stolen probability of fastened device is reduced and the safety of the fastened device is improved.
Description
Technical field
The utility model relates to a kind of hardware, particularly relates to a kind of single rotation direction nut.
Background technique
Existing nut is generally hexagon.Such nut can pass through the two-way twisting of spanner, and such nut has versatility, more convenient use.But in some specific occasion, require nut to screw after, must not arbitrarily dismantle without approval, to prevent article lost in the fastened device or stolen.Existing nut does not have such anti-theft feature.
The model utility content
The utility model is for solving the deficiencies in the prior art, provides a kind of can only screwing but to be difficult to single rotation direction nut of unscrewing.
The scheme that solves the utility model technical problem is: single rotation direction nut is made up of screw, straight flange and arc limit.Wherein, screw is positioned at the central position of nut, and two straight flanges are parallel to each other, and every straight flange and its counterclockwise adjacent arc limit are tangent.The tangent line and the straight flange angle on the arc limit at the intersection point place on the arc limit that straight flange is adjacent with its clockwise direction are not less than 45 °.When clamping two straight flanges with spanner and turn clockwise, nut can rotate smoothly; If spanner is rotated counterclockwise, because straight flange and its counterclockwise adjacent arc limit are by the tangent direction transition, the folder mouth of spanner can skid at the place, point of contact on straight flange and arc limit, can't be rotated counterclockwise nut.
Adopt such scheme, can reach following effect:
Because the utility model can realize that nut can only be turned clockwise by spanner, and can not be rotated counterclockwise, therefore reduced the stolen probability of fastened device, improved its Security.
Description of drawings
Fig. 1 is the structural representation of single rotation direction nut.
Among the figure: 1. screw 2. straight flanges 3. arc limits
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Single rotation direction nut is made up of screw 1, straight flange 2 and arc limit 3.Wherein, screw 1 is positioned at the central position of nut, and two straight flanges 2 are parallel to each other, and every straight flange 2 is tangent with its counterclockwise adjacent arc limit 3.The tangent line and straight flange 2 angles on the arc limit 3 at the intersection point place on the arc limit 3 that straight flange 2 is adjacent with its clockwise direction are 60 °.When clamping two straight flanges 2 with spanner and turn clockwise, nut can rotate smoothly; If spanner is rotated counterclockwise, because straight flange 2 is by the tangent direction transition with its counterclockwise adjacent arc limit 3, the folder mouth of spanner can skid with the place, point of contact on arc limit 3 at straight flange 2, can't be rotated counterclockwise nut.
Claims (1)
1. a single rotation direction nut is made up of screw, straight flange and arc limit, it is characterized in that: screw is positioned at the central position of nut, two straight flanges are parallel to each other, every straight flange and its counterclockwise adjacent arc limit are tangent, and the tangent line and the straight flange angle on the arc limit at the intersection point place on the arc limit that straight flange is adjacent with its clockwise direction are not less than 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200787083U CN201339639Y (en) | 2009-01-16 | 2009-01-16 | Single-screwing direction nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200787083U CN201339639Y (en) | 2009-01-16 | 2009-01-16 | Single-screwing direction nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201339639Y true CN201339639Y (en) | 2009-11-04 |
Family
ID=41235187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200787083U Expired - Fee Related CN201339639Y (en) | 2009-01-16 | 2009-01-16 | Single-screwing direction nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201339639Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180208A (en) * | 2017-12-29 | 2018-06-19 | 广东美的制冷设备有限公司 | Unidirectional tamper union nut, tamper pipe connection device and air conditioner |
-
2009
- 2009-01-16 CN CNU2009200787083U patent/CN201339639Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180208A (en) * | 2017-12-29 | 2018-06-19 | 广东美的制冷设备有限公司 | Unidirectional tamper union nut, tamper pipe connection device and air conditioner |
| CN108180208B (en) * | 2017-12-29 | 2020-04-17 | 广东美的制冷设备有限公司 | One-way anti-dismantling pipe nut, anti-dismantling pipe joint device and air conditioner |
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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: 20091104 Termination date: 20110116 |