CN203532482U - Bolt prevented from sliding off - Google Patents
Bolt prevented from sliding off Download PDFInfo
- Publication number
- CN203532482U CN203532482U CN201320631303.4U CN201320631303U CN203532482U CN 203532482 U CN203532482 U CN 203532482U CN 201320631303 U CN201320631303 U CN 201320631303U CN 203532482 U CN203532482 U CN 203532482U
- Authority
- CN
- China
- Prior art keywords
- screw mandrel
- screw rod
- end cap
- nut
- bolt
- 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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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model relates to a bolt, in particular to a bolt prevented from sliding off. The bolt prevented from sliding off comprises a screw rod, an end cap, an inner screw rod and a nut. The end cap is installed at the upper end of the screw rod, a hole is formed in the upper end of the end cap, the screw rod is in a hollow shape, the inner screw rod is installed in the screw rod and extends to the outside of the screw rod, the end cap is installed at the upper end of the inner screw rod, the two sides of the bottom of the inside of the screw rod are respectively provided with a buckle, the two sides of the bottom of the end cap at the upper end of the inner screw rod are respectively provided with a clamping groove, a fastening groove is installed in the upper end of the end cap at the upper end of the inner screw rod, and the nut is installed outside the screw rod and is installed on the outside of the bottom of the inner screw rod. The bolt has the advantages that dual fastening is achieved, fastening performance is high, the inner screw rod inside the screw rod can strengthen fastening performance of the screw rod and achieves the effect of dual fastening, and the nut at the bottom of the inner screw rod can prevent the screw rod from falling off when the nut on the screw rod loosens.
Description
Technical field
The utility model relates to a kind of bolt, particularly a kind of bolt that prevents that stripped thread from coming off.
Background technique
Bolt is in daily life is worked as and in the middle of industrial production manufacture, can't do without, the specification of bolt and of a great variety, can meet the many-sided demand of people, still, existing bolt in use, because long-term use there will be fastening not tight, generation stripped thread is loosening, finally causes screw to come off, and has potential safety hazard.
Model utility content
The utility model, in order to make up the defect of prior art, provides a kind of simple in structure, easy to use prevents the bolt that stripped thread comes off.
The utility model is achieved by the following technical solution:
A kind of bolt that prevents that stripped thread from coming off, comprise screw mandrel, end cap, interior screw mandrel and nut, end cap is equipped with in described screw mandrel upper end, hole is equipped with in end cap upper end, described screw mandrel is hollow shape, internal thread bar is housed in described screw mandrel, described interior screw mandrel extends to screw mandrel outside, end cap is equipped with in described interior screw mandrel upper end, buckle is equipped with respectively in described screw mandrel inside bottom both sides, the end cap two bottom sides of described interior screw mandrel upper end is equipped with respectively draw-in groove, binding groove is equipped with in the end cap upper end of described interior screw mandrel upper end, nut is equipped with in described screw mandrel outside, described interior screw mandrel bottom outside is equipped with nut, on described screw mandrel outside and interior screw mandrel outside, screw thread is housed respectively.
Further, the end cap diameter of described interior screw mandrel upper end is less than the diameter of hole on the end cap of screw mandrel upper end, and it is greater than the spacing between the buckle of screw mandrel inside bottom both sides.
Further, described screw mandrel outer upper end 1/4th places do not have screw thread.
Further, the diameter of the nut on described interior screw mandrel is greater than the diameter of screw mandrel.
Further, described screw mandrel outboard nut be shaped as six prisms, the nut shape in interior screw mandrel bottom outside is cylindrical.
The beneficial effects of the utility model are: a kind of bolt that prevents that stripped thread from coming off of the utility model, dual fastening, tightness is strong, interior screw mandrel in screw mandrel can strengthen the tightness of screw mandrel, reach dual fastening effect, the effect that when nut of interior screw mandrel bottom can prevent the nut loosening on screw mandrel, screw mandrel comes off.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is sectional drawing of the present utility model.
In figure, 1 screw mandrel, 2 end caps, 3 interior screw mandrels, 4 holes, 5 nuts, 6 buckles, 7 draw-in grooves, 8 binding grooves, 9 screw threads.
Embodiment
Accompanying drawing 1,2 is a kind of specific embodiment of the present utility model.A kind of bolt that prevents that stripped thread from coming off of this model utility, comprise screw mandrel 1, end cap 2, interior screw mandrel 3 and nut 5, end cap 2 is equipped with in described screw mandrel 1 upper end, hole 4 is equipped with in end cap 2 upper ends, described screw mandrel 1 is hollow shape, in described screw mandrel 1, internal thread bar 3 is housed, described interior screw mandrel 3 extends to screw mandrel 1 outside, end cap 2 is equipped with in described interior screw mandrel 3 upper ends, buckle 6 is equipped with respectively in described screw mandrel 1 inside bottom both sides, end cap 2 two bottom sides of described interior screw mandrel 3 upper ends are equipped with respectively draw-in groove 7, binding groove 8 is equipped with in end cap 2 upper ends of described interior screw mandrel 3 upper ends, nut 5 is equipped with in described screw mandrel 1 outside, described interior screw mandrel 3 bottom outside are equipped with nut 5, on described screw mandrel 1 outside and interior screw mandrel 3 outsides, screw thread 9 is housed respectively, end cap 2 diameters of described interior screw mandrel 3 upper ends are less than the diameter of hole 4 on screw mandrel 1 upper end end cap 2, it is greater than the spacing between screw mandrel 1 inside bottom both sides buckle 6, described screw mandrel 1 outer upper end 1/4th places do not have screw thread 9, the diameter of the nut 5 on described interior screw mandrel 3 is greater than the diameter of screw mandrel 1, described screw mandrel 1 outboard nut 5 be shaped as six prisms, nut 5 in interior screw mandrel 3 bottom outside is shaped as cylindrical.A kind of bolt that prevents that stripped thread from coming off of this model utility, during use, screw-driver is connected with the binding groove 8 on interior screw mandrel 3 upper end end caps 2 through the hole 4 on the end cap 2 of screw mandrel 1 upper end, and the draw-in groove 7 of interior screw mandrel 3 upper end end cap 2 downsides is connected with the buckle 6 of screw mandrel 1 inside bottom both sides, by twisting interior screw mandrel 3, drive screw mandrel 1, after the nut 5 in fastening screw mandrel 1 and screw mandrel 1 outside, then the nut 5 in fastening interior screw mandrel 3 and interior screw mandrel 3 outsides.
The utility model is not limited to above-mentioned mode of execution, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technological scheme, within all falling into protection domain of the present utility model.
The technology that the utility model is not described in detail, shape, structure are partly known technology.
Claims (5)
1. a bolt that prevents that stripped thread from coming off, comprise screw mandrel (1), end cap (2), interior screw mandrel (3) and nut (5), it is characterized in that: end cap (2) is equipped with in described screw mandrel (1) upper end, hole (4) is equipped with in end cap (2) upper end, described screw mandrel (1) is hollow shape, internal thread bar (3) is housed in described screw mandrel (1), described interior screw mandrel (3) extends to screw mandrel (1) outside, end cap (2) is equipped with in described interior screw mandrel (3) upper end, buckle (6) is equipped with respectively in described screw mandrel (1) inside bottom both sides, end cap (2) two bottom sides of described interior screw mandrel (3) upper end is equipped with respectively draw-in groove (7), binding groove (8) is equipped with in end cap (2) upper end of described interior screw mandrel (3) upper end, nut (5) is equipped with in described screw mandrel (1) outside, described interior screw mandrel (3) bottom outside is equipped with nut (5), on described screw mandrel (1) outside and interior screw mandrel (3) outside, screw thread (9) is housed respectively.
2. a kind of bolt that prevents that stripped thread from coming off according to claim 1, it is characterized in that: end cap (2) diameter of described interior screw mandrel (3) upper end is less than the diameter of the upper hole (4) of screw mandrel (1) upper end end cap (2), and it is greater than the spacing between screw mandrel (1) inside bottom both sides buckles (6).
3. a kind of bolt that prevents that stripped thread from coming off according to claim 1, is characterized in that: described screw mandrel (1) outer upper end 1/4th places do not have screw thread (9).
4. a kind of bolt that prevents that stripped thread from coming off according to claim 1, is characterized in that: the diameter of the nut (5) on described interior screw mandrel (3) is greater than the diameter of screw mandrel (1).
5. a kind of bolt that prevents that stripped thread from coming off according to claim 1, is characterized in that: described screw mandrel (1) outboard nut (5) be shaped as six prisms, the nut (5) in interior screw mandrel (3) bottom outside is shaped as cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631303.4U CN203532482U (en) | 2013-10-14 | 2013-10-14 | Bolt prevented from sliding off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631303.4U CN203532482U (en) | 2013-10-14 | 2013-10-14 | Bolt prevented from sliding off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532482U true CN203532482U (en) | 2014-04-09 |
Family
ID=50418695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320631303.4U Expired - Fee Related CN203532482U (en) | 2013-10-14 | 2013-10-14 | Bolt prevented from sliding off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673657A (en) * | 2016-03-23 | 2016-06-15 | 南京林业大学 | Pretightening and looseness-preventing mechanism for piezoelectric sensor |
-
2013
- 2013-10-14 CN CN201320631303.4U patent/CN203532482U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673657A (en) * | 2016-03-23 | 2016-06-15 | 南京林业大学 | Pretightening and looseness-preventing mechanism for piezoelectric sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |