CN2208635Y - Check bolt - Google Patents
Check bolt Download PDFInfo
- Publication number
- CN2208635Y CN2208635Y CN 95202463 CN95202463U CN2208635Y CN 2208635 Y CN2208635 Y CN 2208635Y CN 95202463 CN95202463 CN 95202463 CN 95202463 U CN95202463 U CN 95202463U CN 2208635 Y CN2208635 Y CN 2208635Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- locking
- thread
- nut
- hand thread
- 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
Links
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model discloses an anti-loosing screw bolt used for connecting rails and devices with a large vibration and a high frequency. The utility model is composed of a screw bolt, a locking screw bolt, an anti-loosing screw nut, etc. The top end of the screw bolt is provided with a left-hand thread and a common screw thread, the locking screw nut and the anti-loosing screw nut are installed on the right-hand and the left-hand screw threads and the locking screw nut connects with a screw thread of the anti-loosing. The utility model which has the anti-loosing and fastening functions is suitable for a place with a large vibration and high frequency and can be made into various sizes.
Description
The utility model relates to a kind of locking device that rail connects that is used for, and is particularly useful for vibrating the chek bolt in the mechanism big, that frequency is high.
Present known bolt is cooperated and is formed by nut, screw rod, spring washer, plain washer, and the screw thread frictional force between the tension force of dependence spring, screw rod, nut reaches locking purpose.But facts have proved, short at vibration is big, frequency the is high this fastening locking device weak effect in place, service cycle, be prone to fault.Especially rail adopts this connection, and is easily loosening, needs often maintenance, the wasting manpower and material resources.
The utility model purpose provides a kind of chek bolt, and it not only has the effect of workpiece pressing, and has good anti-loosing effect.
The purpose of this utility model is to realize like this, a kind of chek bolt is made up of bolt, locking nut, lock nut etc., there is left-hand thread (5) on the top of bolt (1), regular screw threads (4) are arranged in the rear end of left-hand thread, and locking nut (2) is assemblied on the regular screw threads (4) of bolt (1); The left-hand thread (5) that lock nut (3) is assemblied in bolt (1) upward and with locking nut (2) fine thread is connected, and the diameter of regular screw threads (4) is greater than the diameter of left-hand thread (5).Bolt (1) top left-hand thread (5) length is 2-3 times of female (2) the type first half left-hand thread of locking, regular screw threads (4) length is 1.5 times of female (2) length of locking, the inwall of lock nut (3) has fine thread (6), and the outer end of locking nut (2) has the fine thread (7) and the fine thread (6) of lock nut (3) to be connected.
Owing to adopt such scheme, can in workpiece pressing, effectively solve the loosening under external force problem of workpiece, only the same direction at bolt adopts positive left-hand thread, and the structure of configuration lock jack panel, lock nut reaches the locking purpose of locking, simple in structure, easy for installation.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model structural representation.
Fig. 2 is the structure sectional view of lock nut.
Fig. 3 is the structure sectional view of locking nut.
Among the figure: 1 bolt, 2 locking nuts, 3 lock nuts, 4 regular screw threads, 5 left-hand threads, the thin left-hand thread of 6 teeth, the thin left-hand thread of 7 teeth.
In Fig. 1, Fig. 2 and embodiment shown in Figure 3, chek bolt is made up of bolt, locking nut, lock nut etc., there is left-hand thread (5) on the top of bolt (1), and regular screw threads (4) are arranged in the rear end of left-hand thread, and locking nut (2) is assemblied on the regular screw threads (4) of bolt (1); The left-hand thread (5) that lock nut (3) is assemblied in bolt (1) upward and with locking nut (2) fine thread is connected, and the diameter of regular screw threads (4) is greater than the diameter of left-hand thread (5).Left-hand thread (5) length on bolt (1) top is 2-3 times of female (2) the type first half left-hand thread of locking, regular screw threads (4) length is 1.5 times of female (2) length of locking, the inwall of lock nut (3) has fine thread (6), and the outer end of locking nut (2) has the fine thread (7) and the fine thread (6) of lock nut (3) to be connected.Same direction at bolt adopts two kinds of multi-form screw threads (being positive left-hand thread) to go to realize that the front end of bolt is regular screw threads, and the rear end is anti-pitch thread, and the regular screw threads diameter is greater than anti-pitch thread diameter.Bolt and locking nut, lock nut are used, earlier tight locking nut, the tight lock nut in back.Locking nut is convex shape, its the inside is that regular screw threads are connected with regular screw threads on the bolt, work to compress work, locking nut is type first half outside fine thread and is connected with locking female character cut in bas-relief inwall fine thread, lock nut is concave shape, concave shape Lower Half fine thread is connected with fine thread on the bolt, after workpiece work a period of time, because the effect of external force, locking nut is retreated, the direction that the locking just mother of the direction that retreats advances, two mothers have interlocked to use, when locking nut motionless, and lock nut retreats when last is detained, and locking nut can not retreat, and anti-loosing effect just can go down when having only two nuts to break away from fully, during assembling, locking nut (2) internal thread and bolt (1) are gone up regular screw threads (4) the workpiece pressing effect that linked to each other.Locking nut (2) type first half closely-pitched outside thread is connected with lock nut (3) character cut in bas-relief inwall closely-pitched left-hand thread, lock nut (3) the inside Lower Half closely-pitched left-hand thread links to each other with bolt closely-pitched left-hand thread (5) simultaneously, play locking fastening effect, can increase locking nut (2) type upper half part closely-pitched left-hand thread distance, can increase locking multiple, the positive left-hand thread in the bolt can adopt regular screw threads or fine thread.And can make all size size.
Claims (3)
1, a kind of chek bolt, form by bolt, locking nut, lock nut etc., there is left-hand thread (5) on the top that it is characterized in that bolt (1), at the rear end of left-hand thread car regular screw threads (4) are arranged, locking nut (2) is assemblied on the regular screw threads (4) of bolt (1), the left-hand thread (5) that lock nut (3) is assemblied in bolt (1) upward and with locking nut (2) fine thread is connected, and the diameter of regular screw threads (4) is greater than the diameter of left-hand thread (5).
2, chek bolt according to claim 1 is characterized in that the left-hand thread length on bolt (1) top is female type first half left-hand thread 2-3 times of locking, and regular screw threads (4) length is 1.5 times of the female length of locking.
3, chek bolt according to claim 1 is characterized in that the inwall of lock nut (3) has fine thread (6), and the outer end of locking nut (2) has the fine thread (7) and the fine thread (6) of lock nut (3) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95202463 CN2208635Y (en) | 1995-02-16 | 1995-02-16 | Check bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95202463 CN2208635Y (en) | 1995-02-16 | 1995-02-16 | Check bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2208635Y true CN2208635Y (en) | 1995-09-27 |
Family
ID=33855614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95202463 Expired - Fee Related CN2208635Y (en) | 1995-02-16 | 1995-02-16 | Check bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2208635Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606606A (en) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | Check bolt with left-handed threads |
| CN106438650A (en) * | 2016-11-03 | 2017-02-22 | 贺湘钧 | Bolt set with anti-loosening function |
| CN110360207A (en) * | 2019-07-31 | 2019-10-22 | 嘉兴同辉汽配有限公司 | A kind of check bolt for automobile lamp |
| CN111577740A (en) * | 2020-06-11 | 2020-08-25 | 邬惠林 | Composite double-nut anti-loose bolt |
-
1995
- 1995-02-16 CN CN 95202463 patent/CN2208635Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606606A (en) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | Check bolt with left-handed threads |
| CN106438650A (en) * | 2016-11-03 | 2017-02-22 | 贺湘钧 | Bolt set with anti-loosening function |
| CN110360207A (en) * | 2019-07-31 | 2019-10-22 | 嘉兴同辉汽配有限公司 | A kind of check bolt for automobile lamp |
| CN111577740A (en) * | 2020-06-11 | 2020-08-25 | 邬惠林 | Composite double-nut anti-loose bolt |
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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 |