CN211599244U - Metal fastener locking device - Google Patents
Metal fastener locking device Download PDFInfo
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- CN211599244U CN211599244U CN201922467286.5U CN201922467286U CN211599244U CN 211599244 U CN211599244 U CN 211599244U CN 201922467286 U CN201922467286 U CN 201922467286U CN 211599244 U CN211599244 U CN 211599244U
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- nut
- connecting seat
- internal thread
- bolt
- spring
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Abstract
The utility model discloses a metal fastener locking device relates to fastener technical field, including bolt, first nut and second nut, the bolt includes bolt head and screw rod, the screw rod outside is equipped with first external screw thread, first nut and second nut are established to the cover on the screw rod, and affiliated first nut is inside to be fixed and to set up first connecting seat, establish first internal thread and second external screw thread inside and outside the first connecting seat respectively, form the annular chamber between first connecting seat and the first nut, establish the fixed slot on the first nut at annular chamber top, the second nut passes through second internal thread and bolted connection, establish the second connecting seat on the second nut, establish the third internal thread on the second connecting seat, the spring is established to second connecting seat overcoat, spring bottom and second nut fixed connection. The utility model discloses simple structure, reasonable in design carries out dual locking to the work piece, and spring nut and bolt effect reinforcing, the incident is avoided in the friction increase.
Description
Technical Field
The utility model belongs to the technical field of the fastener technique and specifically relates to a metal fastener locking device.
Background
Fasteners are a very widely used class of mechanical parts for fastening connections. Various fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, supplies and the like, a metal fastener is a common mechanical part, the fastener is composed of a locking nut and a screw rod and is used for fastening and connecting two parts with through holes and widely applied to the field of machinery, when the conventional metal fastener is used on the mechanical equipment, the fastener is loosened due to the large vibration of the mechanical equipment, so that the connection is disconnected, the machine fails, even safety accidents are caused, and therefore a metal fastener locking device is provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defect that exists among the prior art, the utility model provides a metal fastener locking device.
The utility model provides a technical scheme that its technical problem adopted is: a locking device of a metal fastener comprises a bolt, a first nut and a second nut, wherein the bolt comprises a bolt head and a screw, a first external thread is arranged on the outer side of the screw, the screw is sleeved with the first nut and the second nut, a first connecting seat is fixedly arranged in the first nut, the first connecting seat and the first nut are coaxially arranged, a first internal thread and a second external thread are respectively arranged inside and outside the first connecting seat, the first internal thread is matched with the first external thread, an annular cavity is formed between the first connecting seat and the first nut, a fixing groove is arranged on the first nut at the top of the annular cavity, the second nut is rotatably connected with the bolt through a second internal thread, a second connecting seat is arranged on the second nut, a third internal thread is arranged on the second connecting seat, the third internal thread is matched with the second external thread, a spring is sleeved outside the second connecting seat, the bottom of the spring is fixedly connected with the second nut, and the spring is matched with the fixing groove.
In the above metal fastener locking device, the second external thread radius is the same as the third internal thread radius.
In the locking device for the metal fastener, the first connecting seat and the second connecting seat have the same height.
In the locking device for the metal fastener, the connecting groove is formed below the first nut, and the connecting ring is arranged above the second nut.
The beneficial effects of the utility model are that, the utility model discloses simple structure, reasonable in design, first nut and second nut carry out dual locking to the work piece, receive the spring action between first nut and the second nut, first internal thread and second internal thread and first external screw thread effect reinforcing, the increase of friction, the effectual fastener of avoiding is not hard up with the bolt in vibrations nut, and then causes the unable work of equipment to and because of the not hard up incident that causes with breaking away from of fastener.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional axial view of the present invention;
FIG. 3 is a cross-sectional view of the present invention when fastened;
fig. 4 is a schematic structural view of the present invention during fastening.
In the figure, 1, a bolt, 11, a bolt head, 12, a screw rod, 13, threads, 2, a first nut, 21, a first connecting seat, 22, a first internal thread, 23, a second external thread, 24, an annular cavity, 25, a fixing groove, 26, a connecting groove, 3, a second connecting seat, 31, a second internal thread, 32, a second connecting seat, 33, a third internal thread, 34, a spring and 35 are connected with a ring.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following provides a further description of the present invention with reference to the accompanying drawings, and obviously, the following described drawings are only one embodiment of the present invention, and for those skilled in the art, other embodiments can be obtained according to the drawings and the embodiment without any creative work, and all belong to the protection scope of the present invention.
A locking device for a metal fastener comprises a bolt 1, a first nut 2 and a second nut 3, wherein the bolt 1 comprises a bolt head 11 and a screw 12, a first external thread 13 is arranged on the outer side of the screw 12, the first nut 2 and the second nut 3 are sleeved on the screw 12, a first connecting seat 21 is fixedly arranged inside the first nut 2, the first connecting seat 21 and the first nut 2 are coaxially arranged, a first internal thread 22 and a second external thread 23 are respectively arranged inside and outside the first connecting seat 21, the first internal thread 22 is matched with the first external thread 13, the first nut 2 is in threaded connection with the bolt 1, a ring cavity 24 is formed between the first connecting seat 21 and the first nut 2, a fixing groove 25 is arranged on the first nut 2 at the top of the ring cavity 24, the second nut 3 is in rotary connection with the bolt 1 through a second internal thread 31, a second connecting seat 32 is arranged on the second nut 3, establish third internal thread 33 on the second connecting seat 32, third internal thread 33 matches with second external thread 23, spring 34 is established to second connecting seat 32 overcoat, spring 34 bottom and 3 fixed connection of second nut, spring 33 matches with fixed slot 25, and second nut 3 and bolt 1 threaded connection, until second external thread 23 and the meshing of third internal thread 33, first nut 2 and second nut 3 carry out dual locking to the work piece, receive the spring 34 effect between first nut 2 and the second nut 3, first internal thread 22 and second internal thread 23 and the reinforcing of first external thread 22 effect, the increase of friction, effectual fastener and the nut of avoiding in the vibrations are not hard up with bolt 1, and then cause the unable work of equipment to and because of the not hard up and the incident that breaks away from the cause of fastener.
In detail, the radius of the second external thread 23 is the same as the radius of the third internal thread 33, the heights of the first connecting seat 21 and the second connecting seat 32 are the same, the connecting groove 26 is arranged below the first nut 2, and the connecting ring 35 is arranged above the second nut 3.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (4)
1. A metal fastener locking device includes a bolt (1), a first nut (2) and a second nut (3), characterized in that: the bolt (1) comprises a bolt head (11) and a screw rod (12), a first external thread (13) is arranged on the outer side of the screw rod (12), a first nut (2) and a second nut (3) are sleeved on the screw rod (12), a first connecting seat (21) is fixedly arranged inside the first nut (2), the first connecting seat (21) and the first nut (2) are coaxially arranged, a first internal thread (22) and a second external thread (23) are respectively arranged inside and outside the first connecting seat (21), the first internal thread (22) is matched with the first external thread (13), a ring cavity (24) is formed between the first connecting seat (21) and the first nut (2), a fixing groove (25) is arranged on the first nut (2) at the top of the ring cavity (24), the second nut (3) is rotatably connected with the bolt (1) through a second internal thread (31), and a second connecting seat (32) is arranged on the second nut (3), establish third internal thread (33) on second connecting seat (32), third internal thread (33) and second external screw thread (23) match, spring (34) are established to second connecting seat (32) overcoat, spring (34) bottom and second nut (3) fixed connection, spring (34) and fixed slot (25) match.
2. A metal fastener tightening device according to claim 1, wherein the second external thread (23) has the same radius as the third internal thread (33).
3. A metal fastener tightening device according to claim 1, characterized in that the first attachment seat (21) and the second attachment seat (32) are of the same height.
4. A metallic fastener tightening device according to claim 1, characterized in that the first nut (2) has a coupling groove (26) below it and the second nut (3) has a coupling ring (35) above it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467286.5U CN211599244U (en) | 2019-12-31 | 2019-12-31 | Metal fastener locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467286.5U CN211599244U (en) | 2019-12-31 | 2019-12-31 | Metal fastener locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211599244U true CN211599244U (en) | 2020-09-29 |
Family
ID=72598695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922467286.5U Active CN211599244U (en) | 2019-12-31 | 2019-12-31 | Metal fastener locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211599244U (en) |
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2019
- 2019-12-31 CN CN201922467286.5U patent/CN211599244U/en active Active
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