CN202194924U - Tightening device with bidirectional threads - Google Patents
Tightening device with bidirectional threads Download PDFInfo
- Publication number
- CN202194924U CN202194924U CN2011203259630U CN201120325963U CN202194924U CN 202194924 U CN202194924 U CN 202194924U CN 2011203259630 U CN2011203259630 U CN 2011203259630U CN 201120325963 U CN201120325963 U CN 201120325963U CN 202194924 U CN202194924 U CN 202194924U
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- CN
- China
- Prior art keywords
- nut
- screw rod
- thread section
- securing means
- reverse
- 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 tightening device with bidirectional threads. The tightening device with the bidirectional threads comprises a screw rod which is provided with threads at one end, wherein a screw cap is arranged on the screw rod. The tightening device is simple in structure convenient to detach and has a better locking function; and in the using process of the tightening device, the probability of a loosening phenomenon is reduced.
Description
Technical field
The utility model relates to a kind of securing means, especially relates to a kind of securing means with bidirectional helical.Belong to mechanical field.
Background technique
Fastening piece is to be fastenedly connected to use and use one type of mechanical parts very widely.On various machineries, equipment, vehicle, boats and ships, railway, bridge, building, structure, instrument, instrument, instrument and articles for use etc., can see fastening piece miscellaneous.Its feature is that description is various, and the performance purposes is different, and standardization, seriation, unitized kind of degree are also high.Therefore also there is the people to call standard fasteners to one type of fastening piece of existing NBS, or abbreviates standard piece as.Be the one type of mechanical parts that is fastenedly connected usefulness, use very extensive. the characteristics of fastening piece:: description is various, and the performance purposes is different, and standardization, seriation, unitized strong.Fastening piece comprises: bolt, double-screw bolt, screw, nut, packing ring, pin etc.Because specification, size, tolerance, weight, performance, surface condition, the labeling method of each concrete Fastener products; And the specific requirement of projects such as acceptance, sign and packing; Be separate provision in several countries (industry) standard, English system, German system and made in U.S.A are for example arranged.
By head and screw rod (having externally threaded cylindrical body) one type of fastening piece dimerous, need nut to cooperate, be used to be fastenedly connected two parts that have through hole.This Connecting format is called bolt and connects, and as screwing off nut from bolt, can make these two parts separately again, is to belong to removably connect so bolt connects.Bolt is very extensive in practical applications; Generally it is divided into plain bolt and heterotypic bolt; The standard of dividing is everyly to have the bolt of NBS all to should be plain bolt (like hexagon head bolt, socket cap hexagon socket head cap screw, stud bolt, straight groove bolt, cross recess bolt, square toes Cock screw stone bolt etc.); Do not have the bolt of national regulation to claim heterotypic bolt, it generally is used in special occasion, special purposes, also need special tool go fastening with unscrew it.In the petroleum industry field, some particular environment need use heterotypic bolt just can meet the demands, but the machinery fastening screw nut that uses at present is unidirectional screw thread; Screw rod inserts the screw of required fastening mechanical part; Nut along being threaded into until screwing, is reached the fastening each other of mechanical part, because the screw rod nut of unidirectional screw thread is loosening easily; Cause the mechanical part can not be fastening, in the process of using, cause mechanical equipment fault easily or damage.
The model utility content
The purpose of the utility model is to overcome the shortcoming and defect of above-mentioned existing technology; A kind of securing means with bidirectional helical is provided, and this securing means is simple in structure, convenient disassembly; Have higher locking function, reduce phenomenon probability of happening loosening in the using process.
The purpose of the utility model realizes through following technical proposals: have the securing means of bidirectional helical, comprise that an end is provided with threaded screw rod, said screw rod is provided with nut.
Said screw thread comprises forward clockwise direction thread section and reverse thread section counterclockwise, and said reverse thread section diameter counterclockwise is less than forward clockwise direction thread section, and reverse thread section counterclockwise is in the top of screw rod.
Said nut comprises forward nut and reverse nut, and is separately positioned on the corresponding thread section.
The end face of said forward nut is provided with groove, and the end face of said reverse nut is provided with the projection corresponding with the size of groove, and said groove contacts with projection.
The other end of said screw rod is provided with fixing device.
Said screw rod and nut all adopt the nitriding steel material to process.
In sum, the beneficial effect of the utility model is: this securing means is simple in structure, and convenient disassembly has higher locking function, reduces phenomenon probability of happening loosening in the using process.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of screw rod.
Mark and corresponding component title in the accompanying drawing: 1-reverse thread section counterclockwise; 2-reverse nut; 3-forward nut; 4-projection; 5-groove; The counterclockwise thread section of 6-forward; 7-screw rod; 8-fixing device.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done further to specify, but the mode of execution of the utility model is not limited only to this.
Embodiment:
Like Fig. 1, shown in Figure 2, have the securing means of bidirectional helical, comprise that an end is provided with threaded screw rod 7, said screw rod 7 is provided with nut.Nut is tightened on the screw rod 7 through screw thread.
Said screw thread comprises forward clockwise direction thread section 6 and reverse thread section 1 counterclockwise, and said reverse thread section 1 diameter counterclockwise is less than forward clockwise direction thread section 6, and reverse thread section 1 counterclockwise is in the top of screw rod 7.Reverse thread section 1 diameter counterclockwise is to make things convenient for nut to screw in less than forward clockwise direction thread section 6.
Said nut comprises forward nut 3 and reverse nut 2, and is separately positioned on the corresponding thread section.In use; Earlier forward nut 3 is screwed in forward clockwise direction thread section 6, then reverse nut 2 is screwed in reverse thread section 1 counterclockwise, projection 4 embeds in the groove 5 simultaneously; Realized the locking between the nut, prevented that the nut that the vibrations of mechanical part in practical process cause from becoming flexible.
The other end of said screw rod 7 is provided with fixing device 8.Through fixing device 8 screw rod 7 is fixed on the machinery, has increased the steadiness in the using process.
The end face of said forward nut 3 is provided with groove 5, and the end face of said reverse nut 2 is provided with the projection corresponding with the size of groove 54, and said groove 5 contacts with projection 4.Through the locking of groove 5 with projection 4, increased the steadiness of mechanical part, prevent to become flexible.
Said screw rod 7 all adopts the nitriding steel material to process with nut.Adopt the nitriding steel material, can increase the wear resistance of screw rod 7 nuts, increased the intensity of screw rod 7, the life-span of use has prolonged greatly.
Take aforesaid way, just can implement the utility model preferably.
Claims (6)
1. have the securing means of bidirectional helical, it is characterized in that: comprise that an end is provided with threaded screw rod (7), said screw rod (7) is provided with nut.
2. the securing means with bidirectional helical as claimed in claim 1; It is characterized in that: said screw thread comprises forward clockwise direction thread section (6) and reverse thread section (1) counterclockwise; Said reverse thread section (1) diameter counterclockwise is less than forward clockwise direction thread section (6), and reverse thread section (1) counterclockwise is in the top of screw rod (7).
3. the securing means with bidirectional helical as claimed in claim 2 is characterized in that: said nut comprises forward nut (3) and reverse nut (2), and is separately positioned on the corresponding thread section.
4. the securing means with bidirectional helical as claimed in claim 3; It is characterized in that: the end face of said forward nut (3) is provided with groove (5); The end face of said reverse nut (2) is provided with the projection (4) corresponding with the size of groove (5), and said groove (5) contacts with projection (4).
5. the securing means with bidirectional helical as claimed in claim 1 is characterized in that: the other end of said screw rod (7) is provided with fixing device (8).
6. like any described securing means with bidirectional helical in the claim 1 to 5, it is characterized in that: said screw rod (7) and nut all adopt the nitriding steel material to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203259630U CN202194924U (en) | 2011-08-24 | 2011-08-24 | Tightening device with bidirectional threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203259630U CN202194924U (en) | 2011-08-24 | 2011-08-24 | Tightening device with bidirectional threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194924U true CN202194924U (en) | 2012-04-18 |
Family
ID=45949838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203259630U Expired - Fee Related CN202194924U (en) | 2011-08-24 | 2011-08-24 | Tightening device with bidirectional threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194924U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312899A (en) * | 2011-08-24 | 2012-01-11 | 成都科盛石油科技有限公司 | Fixing device with bidirectional threads |
| CN104454913A (en) * | 2014-12-05 | 2015-03-25 | 衣志江 | Loosening-preventing bolt |
| CN104653582A (en) * | 2013-11-18 | 2015-05-27 | 张响红 | Screw with right-hand and left-hand threads |
| CN105257664A (en) * | 2015-08-20 | 2016-01-20 | 无锡中强电碳有限公司 | Anti-loose fastener |
-
2011
- 2011-08-24 CN CN2011203259630U patent/CN202194924U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312899A (en) * | 2011-08-24 | 2012-01-11 | 成都科盛石油科技有限公司 | Fixing device with bidirectional threads |
| CN104653582A (en) * | 2013-11-18 | 2015-05-27 | 张响红 | Screw with right-hand and left-hand threads |
| CN104454913A (en) * | 2014-12-05 | 2015-03-25 | 衣志江 | Loosening-preventing bolt |
| CN105257664A (en) * | 2015-08-20 | 2016-01-20 | 无锡中强电碳有限公司 | Anti-loose fastener |
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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: 20120418 Termination date: 20120824 |