CN201588866U - Anti-theft nut - Google Patents
Anti-theft nut Download PDFInfo
- Publication number
- CN201588866U CN201588866U CN2009202637860U CN200920263786U CN201588866U CN 201588866 U CN201588866 U CN 201588866U CN 2009202637860 U CN2009202637860 U CN 2009202637860U CN 200920263786 U CN200920263786 U CN 200920263786U CN 201588866 U CN201588866 U CN 201588866U
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- CN
- China
- Prior art keywords
- nut
- theft
- groove
- hole
- theft nut
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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 - Fee Related
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Abstract
The utility model discloses an anti-theft nut comprising a nut body which at least comprises a built-in through hole, the inner wall of the through hole is provided with screw threads, the inner wall of the through hole is also provided with a trough which is consistent with the movement direction of a thread groove, and an elastic clamping piece is internally arranged in the trough. The anti-theft nut has simple operation and convenient use, and can realize the anti-theft purpose without the redundant construction process such as pin assembling and welding. In addition, the anti-theft nut has simple structure and low manufacturing cost. By adopting the elastic clamping piece, the screwing is smooth, after screwing, a bolt is effectively clamped in the nut by the elastic clamping piece, and the anti-theft function is realized.
Description
Technical field
The utility model relates to a kind of parts of fastening piece, is specifically related to a kind of anti-theft nut.
Technical background
Bolt and nut are as a kind of connector element, by the general all trades and professions that are applied to.
Existing plain bolt can only be realized general linkage function usually, and at this kind present situation, people have developed the self-locking performance nut with anti-theft feature; The self-locking nut of present stage generally adopts ratchet or similar ratchet zigzag structure to carry out stuck locking, its complex structure also has some to adopt modes such as assembling pin, welding to realize the mode that nut locks, though simple in structure, but construction sequence is more relatively, uses comparatively complicated.
In sum, develop a kind of anti-theft nut simple in structure, easy to use, become the focal issue of paying close attention in the industry.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of anti-theft nut, and it is simple in structure, and is easy to use, satisfies the various requirement in the engineering construction.
For achieving the above object, the utility model adopts following technological scheme:
A kind of anti-theft nut comprises nut body, and this nut body comprises a built-in through hole at least, and described through-hole wall is provided with screw thread, and the inwall that is positioned at described through hole is provided with the draw-in groove consistent with the trend of described thread groove, the built-in flexible clamp piece of described draw-in groove.
Described flexible clamp piece comprises a spring and steel ball.
Described spring one end is connected with the medial extremity of described draw-in groove, the outboard end that is installed on described spring of described steel ball activity.
The degree of depth of described draw-in groove is increased to the centre gradually by two ends.
Neutral position, described draw-in groove bottom is provided with a block.
Also preset obstruction in the described through hole.
The anti-theft nut that the utility model is set forth, its beneficial effect is that it is simple to operate, and is easy to use, do not need to carry out construction technological process such as unnecessary assembling pin, welding, just can realize antitheft purpose; In addition, of the present utility model simple in structure, make that its fabricating cost is low owing to adopt flexible fastener, tighten smooth and easy, tighten finish after, flexible clamp piece is effectively stuck in nut with bolt, realizes anti-theft feature.
Description of drawings
Fig. 1 is the structural representation of the utility model anti-theft nut;
Fig. 2 is a kind of user mode schematic representation of anti-theft nut shown in Figure 1;
Fig. 3 is the another kind of user mode schematic representation of anti-theft nut shown in Figure 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
As shown in Figure 1, be a kind of anti-theft nut of the present utility model, the cross section exterior contour of its nut body 1 is a regular hexagon, be provided with a round tube hole 2 at its orthohexagonal center, the inwall of round tube hole 2 is provided with screw thread, forms a plurality of thread grooves 3, the inwall of round tube hole 2 also be provided with one with the consistent draw-in groove 4 of thread groove 3 trends, the degree of depth of draw-in groove 4 is increased gradually by its inward at both ends, and its highest point extends to the top of screw thread, and least significant end is lower than the bottom surface of thread groove 3; At draw-in groove 4 lowest orders block 5 is set, block 5 is fixed on the nut body 1, and block 5 tops are equipped with a spring 6, and the flexible direction of spring 6 is consistent with the length direction of draw-in groove 4, and the outside of spring is equipped with a steel ball 7.
When above-mentioned nut uses, as shown in Figure 2, bolt 8 plug-in mountings are gone in the round tube hole 2 of nut, and rotate along hand of spiral, when the screw thread of bolt 8 contacted above-mentioned steel ball 7, the threaded walls top of bolt 8 compressed steel ball 7, and the contraction by spring 6 gradually with its direction extruding of deepening to draw-in groove 4 degree of depth, steel ball 7 is squeezed in the draw-in groove 4, makes its bottom surface that does not protrude in thread groove 3, bolt 8 can turn to the position of mating with nut smoothly thus.
As shown in Figure 3, after the installation of finishing nut and bolt 8, because spring 6 extends to original state, it ejects steel ball 7 to original state, steel ball 7 closely contacts with the screw thread of bolt 8 on one side, another side closely contacts with the inwall of draw-in groove 4, when bolt 8 and nut being implemented to separate when rotating, steel ball 7 blocks the screw thread of bolt 8, and it can not be rotated relative to nut, and, the backward rotation dynamics is big more, frictional force between steel ball 7 and the bolt 8 is big more, thereby realizes self-locking, reaches antitheft purpose.
Above-mentioned spring 6 can be fixedly connected on the block 5, and simultaneously, steel ball 7 also can be being welded on the spring 6 of fixing, and implements to separate when rotating when implementing bolt 8 and nut, and spring 6 is tension steel balls 7 inwardly, thereby play better self-locking effect.
When above-mentioned nut is made, install spring and steel ball after, adopt the interim obstruction of a plastics quality to place in its through hole, with shutoff spring and steel ball, avoid the destruction under the non-use condition, during use, nut screws in bolt, automatically obstruction is ejected.
For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection domain of the utility model claim all according to technological scheme described above and design.
Claims (6)
1. an anti-theft nut comprises nut body, and this nut body comprises a built-in through hole at least, described through-hole wall is provided with screw thread, it is characterized in that the inwall that is positioned at described through hole is provided with the draw-in groove consistent with the trend of described thread groove, the built-in flexible clamp piece of described draw-in groove.
2. anti-theft nut as claimed in claim 1 is characterized in that described flexible clamp piece comprises a spring and steel ball.
3. anti-theft nut as claimed in claim 2 is characterized in that, described spring one end is connected with the medial extremity of described draw-in groove, the outboard end that is installed on described spring of described steel ball activity.
4. anti-theft nut as claimed in claim 1 is characterized in that the degree of depth of described draw-in groove is increased to the centre gradually by two ends.
5. anti-theft nut as claimed in claim 4 is characterized in that, neutral position, described draw-in groove bottom is provided with a block.
6. anti-theft nut as claimed in claim 1 is characterized in that, also presets obstruction in the described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202637860U CN201588866U (en) | 2009-11-30 | 2009-11-30 | Anti-theft nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202637860U CN201588866U (en) | 2009-11-30 | 2009-11-30 | Anti-theft nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588866U true CN201588866U (en) | 2010-09-22 |
Family
ID=42748645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202637860U Expired - Fee Related CN201588866U (en) | 2009-11-30 | 2009-11-30 | Anti-theft nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846666A (en) * | 2021-03-13 | 2021-05-28 | 钟东明 | Manufacturing process of anti-theft screw |
-
2009
- 2009-11-30 CN CN2009202637860U patent/CN201588866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846666A (en) * | 2021-03-13 | 2021-05-28 | 钟东明 | Manufacturing process of anti-theft screw |
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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: 20100922 Termination date: 20111130 |