CN2658459Y - High-strength anti-theft abnormal-shaped fastener - Google Patents
High-strength anti-theft abnormal-shaped fastener Download PDFInfo
- Publication number
- CN2658459Y CN2658459Y CN 200320120194 CN200320120194U CN2658459Y CN 2658459 Y CN2658459 Y CN 2658459Y CN 200320120194 CN200320120194 CN 200320120194 CN 200320120194 U CN200320120194 U CN 200320120194U CN 2658459 Y CN2658459 Y CN 2658459Y
- Authority
- CN
- China
- Prior art keywords
- nut
- groove
- steel ball
- washer
- theft
- 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 discloses a high-strength theft-guarded heterotypic fastener composed of a bolt, a nut, a steel ball and a washer. The lower side of the nut is provided with a slot. A lower plane is provided with an arched non-return groove. The arched non-return groove inside is provided with the steel ball. An outer ring of the washer is provided with a upwards-facing protruding ring. The washer is clamped on the slot at the lower side of the nut, thus incorporating the nut equipped with the steel ball and the washer. The bolt is provided with a groove. An inner ring of the washer is provided with a protruding block corresponding to the groove. The utility model has a simple structure, a convenient use without any special-purpose tool; also has a good theft-guarding performance, which can be widely used in connecting the structural members in the electric power plants, railways, roadways, bridges and outdoor facilities.
Description
Technical field
The utility model relates to a kind of fastening piece, especially the antitheft special-shaped screw of electric force pole tower, railway, highway, bridge and the fastening usefulness of outdoor communal facility.
Background technique
At present, the normal screws that electric force pole tower, railway, highway, bridge and outdoor communal facility are used when member connects, artificial removing damaged phenomenon happens occasionally, cause great threat therefore for national wealth and people's life safety, though also there are some anti-theft nuts to occur, but the method that major part is all taked to change the nut profile realizes, need special tool during use, both uneconomical also inconvenient, the method that also has some anti-theft nuts to take to damage nut inner thread realizes antitheft, nut thread part intensity is affected, exist accident potential.
Summary of the invention
The purpose of this utility model is that a kind of special-shaped fastening piece of high-strength anti-theft with anti-theft feature rational in infrastructure, easy to use will be provided.
The purpose of this utility model is achieved in that by bolt, nut, steel ball, packing ring to be formed, there is draw-in groove the lower end of nut, lower plane is provided with circular arc check groove, in the circular arc check groove steel ball is housed, protruding circle is upwards arranged on the outer ring of packing ring, and packing ring is stuck on the draw-in groove of nut lower end, and nut and packing ring that steel ball is housed are connected as a single entity, bolt is provided with groove, has on the inner ring of packing ring and the corresponding projection of groove.
The utility model has the advantages that simple in structure, easy to use, do not need special tool, theftproof performance is preferably arranged simultaneously, can be widely when the member of electric power, railway, highway, bridge and outdoor communal facility connects, use.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Fig. 2 is the structural drawing of the utility model nut.
Fig. 3 is the structural drawing of the utility model packing ring.
Fig. 4 is the worm's eye view of the utility model nut.
1. bolts among the figure, 2. nut, 3. steel ball, 4. packing ring, 5. groove, 6. circular arc check groove, 7. draw-in groove, 8. projection, 9. protruding circle.
Embodiment
There is draw-in groove 7 lower end of nut 2, the lower plane of nut 2 is provided with two circular arc check grooves 6 of 180 ° each other, in the circular arc check groove 6 steel ball 3 is housed, protruding circle 9 is upwards arranged on the outer ring of packing ring 4, packing ring 4 is stuck on the draw-in groove 7 of nut 2 lower ends, make the nut 2 that steel ball 3 is housed be linked as an integral body with packing ring 4, bolt 1 is provided with groove 5, has on the inner ring of packing ring 4 and groove 5 corresponding projections 8.Earlier bolt 1 is penetrated link during use, with the groove on the 8 aligning bolts 1 of the projection on packing ring 4 inner rings, when clockwise direction rotated, the depths that steel ball 8 is in circular arc check groove 6 did not influence motion with nut 2 then, thus fasten structural elements together; When nut 2 when counter clockwise direction is rotated, steel ball 3 is moved round about by the depths of circular arc check groove 6 under the effect of friction, thereby make nut 2 become as a whole with packing ring 4 securely in link, therefore can't become flexible, reach antitheft purpose by steel ball 3.
Claims (1)
1. the special-shaped fastening piece of a high-strength anti-theft, form by bolt, nut, steel ball, packing ring, there is draw-in groove the lower end that it is characterized in that nut, lower plane is provided with circular arc check groove, in the circular arc check groove steel ball is housed, and protruding circle is upwards arranged on the outer ring of packing ring, packing ring is stuck on the draw-in groove of nut lower end, nut and packing ring that steel ball is housed are connected as a single entity, and bolt is provided with groove, has on the inner ring of packing ring and the corresponding projection of groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320120194 CN2658459Y (en) | 2003-12-01 | 2003-12-01 | High-strength anti-theft abnormal-shaped fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320120194 CN2658459Y (en) | 2003-12-01 | 2003-12-01 | High-strength anti-theft abnormal-shaped fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658459Y true CN2658459Y (en) | 2004-11-24 |
Family
ID=34347923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320120194 Expired - Fee Related CN2658459Y (en) | 2003-12-01 | 2003-12-01 | High-strength anti-theft abnormal-shaped fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658459Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709736B (en) * | 2009-12-02 | 2011-08-10 | 杨聪辉 | Nut |
-
2003
- 2003-12-01 CN CN 200320120194 patent/CN2658459Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709736B (en) * | 2009-12-02 | 2011-08-10 | 杨聪辉 | Nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |