CN201561036U - Pin-type annular knurl roller defense and anti-theft bolt combining part - Google Patents
Pin-type annular knurl roller defense and anti-theft bolt combining part Download PDFInfo
- Publication number
- CN201561036U CN201561036U CN2009202793360U CN200920279336U CN201561036U CN 201561036 U CN201561036 U CN 201561036U CN 2009202793360 U CN2009202793360 U CN 2009202793360U CN 200920279336 U CN200920279336 U CN 200920279336U CN 201561036 U CN201561036 U CN 201561036U
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- Prior art keywords
- bolt
- annular knurl
- shaped groove
- knurl roller
- theft
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- Expired - Fee Related
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Abstract
The utility model relates to a pin-type annular knurl roller defense and anti-theft bolt combining part, which mainly solves the problem that an existing defense and anti-theft bolt adopting smooth pins has bad anti-theft function. The pin-type annular knurl roller defense and anti-theft bolt combining part is characterized in that at least one L-shaped groove (4) is processed on the surface of a bolt (1) along the length direction of the bolt; the bolt (1) is connected with a nut (2) through threads; an annular knurl roller pin (3) capable of preventing the nut from rotating in an inverse direction is arranged inside each of the L-shaped groove (4); and distance is of at least one thread pitch is arranged from the tail end of each L-shaped groove (4) and the end position of threads. The pin-type annular knurl roller defense and anti-theft bolt combining part has the advantages of no slipping of inserted pin annular knurls and defense and anti-theft functions.
Description
Technical field:
The utility model relates to a kind of bolt fastener, especially the anti-anti-theft bolt assembly parts that unloads of bolt-type annular knurl roller.
Background technique:
Bolt is a kind of fastening piece that has wide range of applications, and is as long as corresponding nut is just screwed in and fastened thing can be clamped, very easy to use.But in use, sometimes because of artificially its dismounting being produced unsafe factor even having an accident.For preventing the trespassory taking of lawless people, the field construction of numerous major workss all will adopt anti-theft bolt to be fastenedly connected, and the existing multiple anti-anti-theft bolt that unloads is owing to adopting vertical smooth pin, skid easily, anti-theft feature is relatively poor, can not satisfy present needs, not only using has inconvenience, even has caused serious loss.
The model utility content:
Existingly anti-unload anti-theft bolt and adopt smooth pin and the deficiency of anti-theft feature difference in order to overcome, the utility model provides a kind of bolt-type annular knurl roller the anti-anti-theft bolt assembly parts that unloads, and this bolt-type annular knurl roller is anti-to be unloaded the anti-theft bolt assembly parts and have that the latch annular knurl is non-slip, anti-to unload antitheft characteristics.
The technical solution of the utility model is: the anti-anti-theft bolt assembly parts that unloads of a kind of bolt-type annular knurl roller, comprise bolt, annular knurl roller pin, nut, be processed with at least one L shaped groove on the described bolt surface along the bolt length direction, bolts and nuts are by being threaded, be provided with the annular knurl roller pin that can prevent the nut counterrotating in the described L shaped groove, the distance at the end-to-end distance screw-thread ending place of described L shaped groove is at least 1 pitch.
Angle between the minor face of described L shaped groove and the long limit is the 85-120 degree.
Angle between the minor face of described L shaped groove and the long limit is 90 degree.
Described L shaped groove is one, and the surface of annular knurl roller pin is rhombus, vertical bar shaped or S shape.
Described L shaped groove is at least two, the annular knurl roller pin in each groove surperficial identical or different all can, the surface of annular knurl roller pin is rhombus, vertical bar shaped or S shape.
The depth B on described L shaped flute length limit is 2 times of minor face degree of depth A.
The degree of depth A of described L shaped groove minor face is 1.6-4.6mm.
The length of described annular knurl roller pin is 0.7-1 times of nut thickness.
Described L shaped groove leaves fillet R3-12mm at the screw-thread ending place of bolt.
Described nut is a hexagon nut, and bolt is a hexagon head bolt.
The utlity model has following beneficial effect: owing to take such scheme, bolt is milled with a L shaped groove along the screw thread medial axis, bolts and nuts are by being threaded, the annular knurl roller pin places in the L shaped groove, screw bolt and nut has promptly reached the anti-antitheft and fastening purpose of unloading, as with the nut derotation, the annular knurl roller pin drive to be squeezed more shallow position in the L shaped opening slot by screw thread, nut promptly is stuck, and derotation power is big more, and the annular knurl roller pin is tight more by what squeeze, thereby more can't screw out, then can cause screw thread to be damaged when external force is excessive, nut also just can not screw out, thereby realizes the anti-antitheft effect of unloading; And when nut need continue to screw in, the annular knurl roller pin was taken to L shaped opening slot depths by screw thread, and nut still can screw in the function that realization tightens up.
Description of drawings:
Accompanying drawing 2 is the anti-plan view that unloads bolt in the anti-theft bolt assembly parts of bolt-type annular knurl roller;
Accompanying drawing 3 is the anti-structural representation that unloads the anti-theft bolt assembly parts of bolt-type annular knurl roller;
Accompanying drawing 4 is the anti-structural representation that unloads annular knurl roller pin in the anti-theft bolt assembly parts of bolt-type annular knurl roller, and wherein scheming a, d is the annular knurl rhombus, and b, e are vertical bar shaped, and c, f are S shape, and the end of d, e, f has tapering.
1-bolt among the figure, 2-nut, 3-annular knurl roller pin, 4-groove, 5-fillet.
Embodiment:
Below the utility model is elaborated:
By Fig. 1, Fig. 2, shown in Figure 3, the anti-anti-theft bolt assembly parts that unloads of a kind of bolt-type annular knurl roller, comprise bolt 1, annular knurl roller pin 3, nut 2, be processed with at least one L shaped groove 4 on described bolt 1 surface along bolt 1 length direction, bolt 1 and nut 2 are by being threaded, be provided with the annular knurl roller pin 3 that can prevent the nut counterrotating in the described L shaped groove 4, the distance at the end-to-end distance screw-thread ending place of described L shaped groove 4 is at least 1 pitch, She Ji reason is like this: because the no length of buckleing part and screw thread part of employed bolt is to determine by the thickness of clamped workpiece, when member is firm by bolt, the shearing force of the suffered maximum of bolt is just at the ending place of screw thread, L shaped groove 4 mills the ending place to screw thread, be subjected to be milled on the cross section of maximum shear stress a part this moment, cause stress to be concentrated, cause the screw rod fracture easily.Therefore, this distance is at least 1 pitch, and for example double nut unloads anti-theft bolt, just must leave the distance of a nut thickness.
Angle between the minor face of described L shaped groove 4 and the long limit is the 85-120 degree, as preferably, minor face and the angle between the long limit of getting L shaped groove 4 are 90 degree, the cross section of L shaped groove 4 is similar right-angled triangles, when bolts and nuts carry out the secure fit connection, the inner circumference of L shaped groove 4 and nut 2 internal threads will form the similar right-angled triangle of a sealing, squeeze into annular knurl roller pin 3 in the similar right-angled triangle of sealing this moment, can only leg-of-mutton right angle electrical move, this moment, nut was because the shape of L shaped groove, the resistance of annular knurl roller pin 3 can not withdraw from derotation, annular knurl roller pin 3 moves with the right angle electrical to right-angled triangle only, can play the effect that tightens up.
Described L shaped groove 4 can be one, at this moment, the surface of annular knurl roller pin 3 can be rhombus, vertical bar shaped or S shape as shown in Figure 4, L shaped groove 4 also can be two or three, at this moment, annular knurl roller pin 3 in each groove surperficial identical or different all can, promptly interior annular knurl roller pin 3 surfaces of each groove can be respectively rhombus, vertical bar shaped or S shape.
The degree of depth A of described L shaped groove 4 minor faces is for going deep into inner 1.6-4.6mm from major diameter of thread along the direction parallel with center line, the concrete degree of depth is determined according to the difference of bolt specification, the depth B on long limit is 2 times of minor face degree of depth A, if the length B on long limit then can't play the effect that tightens up less than the twice of bond length A.During check, screw ring gage is screwed in threaded middle, whether qualified: the stainless steel pin of the employing Φ 1.4mm of M12 if adopting stainless steel pin to judge, M16-M27 adopts the stainless steel pin of Φ 1.8mm, the stainless steel pin of M30 and above employing 2.0mm is judged, neither influence the intensity of bolt 1, can make annular knurl roller pin 3 play the anti-antitheft optimum performance of unloading again well.Annular knurl roller pin 3 diameter of phi 1.2-3.5mm decide on bolt 1 specification size, select optimum diameter for use, play best anti-theft effect.Annular knurl roller pin 3 is selected tighter specification for use generally speaking, needs chisel to impact and finishes.
The length of described annular knurl roller pin 3 is 0.7-1 times of nut 2 thickness, if the length of annular knurl roller pin 3 exceeds the thickness of nut 2, there is part annular knurl roller pin 3 can be exposed at outside the nut 2, pressed from both sides out with pliers and can not play the effect of anti-loose anti-theft by artificial easily, therefore the length of annular knurl roller pin 3 must be less than the thickness of nut 2, but length can not be too short, otherwise anti-loose anti-theft poor effect, according to bolt 1 diameter difference, its configured length is respectively: M16-M20 length is 12-15mm, M22-M27 length is 15-20mm, and M30 and above length are 20-30mm.
The screw-thread ending place of described bolt 1 leaves fillet 5 and is R3-12mm, mainly in order to prevent that high-strength bolt from producing stress when the heat treatment and concentrating, in general, the diameter of bolt is big more, fillet 5 sizes are big more, but big specification bolt does not have R angle, reason when the L shaped groove of processing be just to be the outside thread path this moment.
As preferably, described nut 2 is a hexagon nut, and bolt 1 is a hexagon head bolt, also can be bolt with one end bent back or snap bolt.
Claims (10)
1. a bolt-type annular knurl roller prevents unloading the anti-theft bolt assembly parts, comprise bolt (1), annular knurl roller pin (3), nut (2), it is characterized in that: be processed with at least one L shaped groove (4) on described bolt (1) surface along the bolt length direction, bolt (1) and nut (2) are by being threaded, described L shaped groove (4) is built-in with the annular knurl roller pin (3) that can prevent nut (2) counterrotating, and the distance at the end-to-end distance screw-thread ending place of described L shaped groove (4) is at least 1 pitch.
2. bolt-type annular knurl roller according to claim 1 is anti-to unload the anti-theft bolt assembly parts, it is characterized in that: the angle between the minor face of described L shaped groove (4) and the long limit is the 85-120 degree.
3. bolt-type annular knurl roller according to claim 2 is anti-to unload the anti-theft bolt assembly parts, it is characterized in that: the angle between the minor face of described L shaped groove (4) and the long limit is 90 degree.
4. prevent unloading the anti-theft bolt assembly parts according to claim 2 or 3 described bolt-type annular knurl rollers, it is characterized in that: described L shaped groove (4) is one, and the surface of described annular knurl roller pin (3) is rhombus, vertical bar shaped or S shape.
5. according to claim 2 or the anti-anti-theft bolt assembly parts that unloads of 3 described bolt-type annular knurl rollers, it is characterized in that: described L shaped groove (4) is at least two, annular knurl roller pin (3) in each groove surperficial identical or different all can, the surface of described annular knurl roller pin (3) is rhombus, vertical bar shaped or S shape.
6. prevent unloading the anti-theft bolt assembly parts according to claim 2 or 3 described bolt-type annular knurl rollers, it is characterized in that: the depth B on the long limit of described L shaped groove (4) is more than or equal to 2 times of minor face degree of depth A.
7. bolt-type annular knurl roller according to claim 6 is anti-to unload the anti-theft bolt assembly parts, and it is characterized in that: the degree of depth A of described L shaped groove (4) minor face is 1.6-4.6mm.
8. unload the anti-theft bolt assembly parts according to the arbitrary described bolt-type annular knurl roller of claim 1-3 is anti-, it is characterized in that: the length of described annular knurl roller pin (3) is 0.7-1 times of nut (2) thickness.
9. prevent that according to the arbitrary described bolt-type annular knurl roller of claim 1-3 unloading the anti-theft bolt assembly parts is characterized in that: described L shaped groove (4) leaves fillet (5) R3-12mm at the screw-thread ending place of bolt (1).
10. unload the anti-theft bolt assembly parts according to the arbitrary described bolt-type annular knurl roller of claim 1-3 is anti-, it is characterized in that: described nut (2) is a hexagon nut, and bolt (1) is a hexagon head bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202793360U CN201561036U (en) | 2009-11-17 | 2009-11-17 | Pin-type annular knurl roller defense and anti-theft bolt combining part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202793360U CN201561036U (en) | 2009-11-17 | 2009-11-17 | Pin-type annular knurl roller defense and anti-theft bolt combining part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561036U true CN201561036U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202793360U Expired - Fee Related CN201561036U (en) | 2009-11-17 | 2009-11-17 | Pin-type annular knurl roller defense and anti-theft bolt combining part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110811930A (en) * | 2019-11-14 | 2020-02-21 | 胡永成 | Backbone prosthesis of post-rotation type tube expansion structure handle and use method |
| CN110811931A (en) * | 2019-11-14 | 2020-02-21 | 胡永成 | Backbone prosthesis of pronation type expansion pipe structure handle and use method |
-
2009
- 2009-11-17 CN CN2009202793360U patent/CN201561036U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110811930A (en) * | 2019-11-14 | 2020-02-21 | 胡永成 | Backbone prosthesis of post-rotation type tube expansion structure handle and use method |
| CN110811931A (en) * | 2019-11-14 | 2020-02-21 | 胡永成 | Backbone prosthesis of pronation type expansion pipe structure handle and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG HAILI CO., LTD. Free format text: FORMER NAME: ZHEJIANG HAILI GROUP CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 1 No. 324000 Zhejiang province Quzhou city Shen Road Economic Development Zone Patentee after: ZHEJIANG HAILI MAKES CO., LTD. Address before: 1 No. 324000 Zhejiang province Quzhou city Shen Road Economic Development Zone Patentee before: Zhejiang Haili Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20181117 |