CN2500857Y - Self-lock bolt adapted to prevent loosening - Google Patents
Self-lock bolt adapted to prevent loosening Download PDFInfo
- Publication number
- CN2500857Y CN2500857Y CN 01268059 CN01268059U CN2500857Y CN 2500857 Y CN2500857 Y CN 2500857Y CN 01268059 CN01268059 CN 01268059 CN 01268059 U CN01268059 U CN 01268059U CN 2500857 Y CN2500857 Y CN 2500857Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- lock
- lock shaft
- nut
- main body
- 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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- Insertion Pins And Rivets (AREA)
Abstract
The utility model discloses an anti-loose self-locking bolt, the thread part can be composed by two separated segments, an axially transfixion eccentric hole (9) is arranged in one segment of the main bolt (1), the other segment locking bolt is fastened with a lock shaft (2) and a location pin (11), the main bolt is also provided with an arc location groove (10) which is combined with the location pin (11) to make two segments of thread concentrically anastomose, the inner wrench (8) of the bolt is provided with location blocks (5,6) which are controlled by spring (7) and can lock the lock shaft (2) at right position. After the nut is rotated into the bolt, the bolt and the nut produce and keep the eccentric state to prevent the loose by relative motion. At the same time, when needed, the eccentric state can be rescinded to extricate connection.
Description
Technical field: fastening or fixed component, special relevant with a kind of bolt that can lock.
Background technique: at present, the bolt fastener that uses when objects such as fastening or fixed component, machine parts mostly is threaded shank greatly and is equipped with nut, pad, spring washer etc.This bolt fastener problems such as nut rotation, bolt looseness can occur meeting under the situations such as vibrations or high load work.As railway locomotive gear-box main drive motor seize bolt, in case loosening, cause hidden danger easily, often need fastening or maintenance, time-consuming.
Summary of the invention: the utility model is to design a kind of loose-proof self-lock bolt that screw rod and nut are locked at the regular screw threads fastening piece easily loosening problem of working under vibrations or heavy duty.
The utility model adopts following technological scheme: the helical thread portion of bolt is designed to form by separable two sections, wherein the main body bolt part is divided into and connects usefulness, inside is provided with an eccentric opening that axially connects, another section is a lock plunger, and it tightens intrinsic one eccentric lock shaft, also is provided with a locating stud on the lock plunger, one arc positioning groove that matches with locating stud is arranged on the main body bolt, when locating stud is in a certain fixed position of locating slot, two sections screw threads are coincide with one heart, form holistic bolt.Spanner portion at bolt is provided with the lock shaft locking structure.After screwing in nut, the turn lock shaft, then the lock plunger part produces off-centre with nut, and this moment, locking structure made the lock shaft locking, prevented bolts and nuts generation relative movement, thereby reached fastening locking purpose.
The loose-proof self-lock bolt that the utility model provides owing to can make bolts and nuts be in eccentric state all the time after locking, can effectively prevent nut and bolt generation relative movement, is difficult for becoming flexible, and makes fastening piece safety, reliable.Because of the fastening piece at positions such as the down easily loosening railway locomotive of vibrations or heavy duty, vehicle, track switch, rail joint, all can once tighten and put in place during to high-speed motion, need not tighten up for a long time, the saving of labor, save time.Simultaneously, this bolt also can be removed off-centre when needed, frees connection.
Below in conjunction with accompanying drawing the utility model is further elaborated.
Description of drawings: Fig. 1 is an embodiment's of the utility model a sectional structure schematic representation;
Fig. 2 is the side view of the utility model the foregoing description;
Fig. 3 is the utility model the foregoing description lock shaft and positioning block interlocking pattern schematic representation;
Fig. 4 is the structural representation of the utility model the foregoing description main body bolt arc positioning groove.
As shown in the figure, the helical thread portion of bolt is formed by separable two sections, and wherein one section is main body bolt 1 part, and an eccentric opening 9 that axially connects is arranged in it, and another section is lock plunger 3 parts, and it tightens intrinsic one lock shaft 2 that can cooperate with main body bolt eccentric opening.Also have a locating stud 11 on the lock plunger 3, also have an arc positioning groove 10 that matches with locating stud 11 on the main body bolt 1, when locating stud 11 is in the end A of locating slot, two sections screw threads are coincide with one heart.Lock shaft 2 is a T shape, and its end cap portions has lobe 12.Be provided with the positioning block 5,6 of band sour jujube tooth 13 in the spanner portion 8 of bolt, can be by spring 7 actions.Lock shaft top cover lobe 12 matches with positioning block 5,6 sour jujube teeth 13, can make the lock shaft location.System axle nail can limit positioning block 5,6 and rotate.
During use, after screwing in nut, free the interlock of positioning block 5,6 and lock shaft 2 with instrument, turn lock shaft 2, make lock shaft 2 drive lock plunger 3 and rotate to an angle, the thread pitch of 3 of nut and lock plungers is eliminated, because the eccentric center principle nut just is locked, take off instrument, this moment, left and right sides positioning block 5,6 was under the effect of spring, again with lock shaft 2 on the lobe interlock, lock shaft 2 is fixing, make nut and lock plunger keep eccentric position, prevent relative movement and become flexible.When needs are untied connecting of nut and bolt, free the interlock of positioning block 5,6 and lock shaft 2, turn lock shaft 2 with instrument, make lock plunger 3 drive the A end position that locating stud 11 turns to locating slot, this moment, lock plunger 3, main body bolt 1 were concentric with nut, and just detachable lower nut is untied connection.
Claims (1)
- A kind of loose-proof self-lock bolt, it is characterized in that: the helical thread portion of bolt is formed by separable two sections, one eccentric opening (9) that axially connects is wherein arranged in the main body bolt part (1), another section lock plunger (3) tightens intrinsic lock shaft (2) and locating stud (11), main body bolt (1) go up to also have one to match with locating stud (11) and can make two sections concentric identical arc positioning grooves (10) of screw thread, being provided with in the spanner portion (8) of main body bolt (1) can be by the positioning block (5 of spring (7) action, 6), positioning block (5,6) and the sour jujube tooth (13) and the lobe (12) of interlock mutually arranged respectively on the lock shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268059 CN2500857Y (en) | 2001-11-01 | 2001-11-01 | Self-lock bolt adapted to prevent loosening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268059 CN2500857Y (en) | 2001-11-01 | 2001-11-01 | Self-lock bolt adapted to prevent loosening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2500857Y true CN2500857Y (en) | 2002-07-17 |
Family
ID=33674316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268059 Expired - Fee Related CN2500857Y (en) | 2001-11-01 | 2001-11-01 | Self-lock bolt adapted to prevent loosening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2500857Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901635A (en) * | 2021-02-05 | 2021-06-04 | 海盐天士精密五金科技有限公司 | Locking assembly with anti-loosening function |
| WO2023039864A1 (en) * | 2021-09-17 | 2023-03-23 | 宁德时代新能源科技股份有限公司 | Quick swap lock assembly and locking apparatus using said assembly |
-
2001
- 2001-11-01 CN CN 01268059 patent/CN2500857Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901635A (en) * | 2021-02-05 | 2021-06-04 | 海盐天士精密五金科技有限公司 | Locking assembly with anti-loosening function |
| WO2023039864A1 (en) * | 2021-09-17 | 2023-03-23 | 宁德时代新能源科技股份有限公司 | Quick swap lock assembly and locking apparatus using said assembly |
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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 |