CN221195696U - High-strength fastener capable of preventing loosening - Google Patents
High-strength fastener capable of preventing loosening Download PDFInfo
- Publication number
- CN221195696U CN221195696U CN202323399785.8U CN202323399785U CN221195696U CN 221195696 U CN221195696 U CN 221195696U CN 202323399785 U CN202323399785 U CN 202323399785U CN 221195696 U CN221195696 U CN 221195696U
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- CN
- China
- Prior art keywords
- nut
- fastener
- bolt head
- screw rod
- ejector pin
- 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.)
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- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a high-strength fastener capable of preventing loosening, which comprises a bolt head and a screw rod fixedly arranged on the bolt head, wherein a nut is connected to the screw rod in a threaded manner, an inner thread matched with the screw rod is arranged on the inner surface of the nut, a plurality of grooves are formed in the upper end of the nut, ejector rods are rotatably arranged on the inner walls of the plurality of grooves and are obliquely arranged, the ejector rods are distributed in an annular array, springs are fixedly arranged at the bottoms of the ejector rods, and the bottoms of the springs are fixedly connected with the bottom walls of the grooves. When the fastener receives external force in the use, the nut has not hard up trend, through the restoring force effect of a plurality of springs, drives a plurality of ejector pins and upwards contacts the part this moment, and in case the nut rotates to not hard up direction, a plurality of ejector pins top can upwards conflict the part, and then makes the nut be difficult to take place to rotate, prevents that the fastener from leading to smooth silk unable use because of external force, has prolonged the life of fastener, has improved the practicality of fastener greatly.
Description
Technical Field
The utility model belongs to the technical field of fasteners, and particularly relates to a high-strength fastener capable of preventing loosening.
Background
The fastener is a general name of a type of mechanical parts adopted when two or more parts (or components) are fastened and connected into a whole, has various varieties and specifications, various performance purposes, extremely high standardization, serialization and universalization degrees, is a mechanical base part with the most extensive application, has great demand, and has the advantages of simple operation, stable use, long service life and the like in practical use.
Among the prior art, the fastener that can prevent not hard up that the authority public number CN212337865U put forward, including screw rod body and bolt head, the surface of screw rod body is provided with the screw rod external screw thread, and is provided with movable nut in the middle of the screw rod external screw thread, movable nut's internal surface is provided with the nut internal screw thread, and movable nut's upper end is provided with the nut tooth, the top of nut tooth is provided with the gasket tooth.
The anti-slip fastener cannot effectively prevent the fastener from slipping, so that the anti-slip fastener cannot be used normally and cannot meet the production requirement.
Disclosure of utility model
Aiming at the problems that the fastener cannot be effectively prevented from slipping, so that the fastener cannot be normally used and the production requirement cannot be met, the utility model provides a high-strength fastener capable of preventing loosening.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a prevent not hard up fastener that excels in, includes bolt head and the fixed screw rod that sets up on the bolt head, threaded connection has the nut on the screw rod, a plurality of recesses have been seted up to the nut upper end, the nut is located a plurality of recess inner walls and all rotates and be provided with the ejector pin, and a plurality of the ejector pin is the slope setting, and a plurality of the ejector pin is annular array and distributes, and is a plurality of the ejector pin bottom is all fixed to be provided with the spring, and is a plurality of the spring bottom all is with recess diapire fixed connection, and is a plurality of the recess is used for holding the ejector pin.
Preferably, the inner surface of the nut is provided with internal threads which are matched with the screw rod.
Preferably, the outer side wall of the nut is fixedly provided with two lugs, and the two lugs are symmetrically arranged.
Preferably, the upper end of the bolt head is provided with a clamping groove, and the clamping groove is of a cross-shaped structure.
Preferably, the bottom end of the screw is provided with a pointed cone, and the pointed cone is in an inverted cone structure.
Preferably, the bolt head and the screw are both made of low alloy steel.
Preferably, the surfaces of the bolt head, the screw rod and the nut are coated with an anti-corrosion layer, and the anti-corrosion layer is epoxy resin paint.
Compared with the prior art, the utility model has the beneficial effects that:
1. Through setting up the anticorrosive coating, improve the anticorrosive performance of bolt head, screw rod and nut, and then improve life, make the screw rod have certain attack fastness ability through pointed cone head.
2. When the fastener receives external force in the use, the nut has not hard up trend, through the restoring force effect of a plurality of springs, drives a plurality of ejector pins and upwards contacts the part this moment, and in case the nut rotates to not hard up direction, a plurality of ejector pins top can upwards conflict the part, and then makes the nut be difficult to take place to rotate, prevents that the fastener from leading to smooth silk unable use because of external force, has prolonged the life of fastener, has improved the practicality of fastener greatly.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of the structure of the bolt head and the screw of the present utility model;
Fig. 3 is a schematic structural view of a nut portion of the present utility model.
In the figure: 1. a bolt head; 2. a screw; 3. a nut; 4. a groove; 5. a push rod; 6. a spring; 7. an internal thread; 8. a lug; 9. a clamping groove; 10. a pointed cone head.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1 to 3, a high strength fastener for preventing loosening comprises a bolt head 1 and a screw 2 fixedly arranged on the bolt head 1, wherein the bolt head 1 and the screw 2 are made of low alloy steel, the low alloy steel has good technological properties, the bolt head 1 and the screw 2 are convenient to process, the low alloy steel has higher strength, and the strength of the bolt head 1 and the screw 2 is improved. Threaded connection has nut 3 on the screw rod 2, and nut 3 internal surface is provided with the internal thread 7 with screw rod 2 looks adaptation, and nut 3 and screw rod 2 screw-thread fit conveniently install, and bolt head 1, screw rod 2 and nut 3 surface all are coated with the anticorrosive coating, and the anticorrosive coating is epoxy coating, through setting up the anticorrosive coating, improves the anticorrosive performance of bolt head 1, screw rod 2 and nut 3, and then improves life.
Further, a plurality of recesses 4 have been seted up to nut 3 upper end, and nut 3 is located the equal rotation of a plurality of recesses 4 inner walls and is provided with ejector pin 5, and a plurality of ejector pins 5 are the slope setting, and a plurality of ejector pins 5 are the annular array and distribute, and a plurality of ejector pin 5 bottoms are all fixed and are provided with spring 6, and a plurality of spring 6 bottom all with recess 4 diapire fixed connection, a plurality of recesses 4 are used for holding ejector pin 5.
Specifically, when installing the fastener, insert screw rod 2 earlier on two parts that need be fixed, install nut 3 again, through rotating nut 3, thereby drive the internal thread 7 of nut 3 and screw rod 2 between the screw thread of periphery side and rotate each other, make nut 3 pivoted simultaneously at screw rod 2 axial upward movement, when nut 3 is close two parts that need be fixed soon, a plurality of ejector pins 5 can earlier contact with the part, and compress spring 6 downwards, and then make a plurality of ejector pins 5 accomodate respectively in a plurality of recesses 4, nut 3 and two part contact this moment, accomplish the installation, when the fastener receives external force in use, nut 3 has the trend of becoming flexible, at this moment, through the restoring force effect of a plurality of springs 6, drive a plurality of ejector pins 5 upwards contact the part, in case nut 3 rotates to the direction of becoming flexible, a plurality of ejector pins 5 top can upwards conflict the part, and then make nut 3 be difficult to take place the rotation, prevent that the fastener from leading to the smooth silk to unable use because of external force, the life of fastener has been prolonged, the practicality of fastener has been improved greatly.
In addition, the outer side wall of the nut 3 is fixedly provided with two lugs 8, and the two lugs 8 are symmetrically arranged, so that the nut 3 can be conveniently rotated through the two lugs 8.
In addition, the clamping groove 9 is formed in the upper end of the bolt head 1, the clamping groove 9 is of a cross-shaped structure, tools are conveniently placed in the clamping groove 9, and the bolt head 1 is rotated.
Finally, the bottom end of the screw rod 2 is provided with a pointed cone head 10, the pointed cone head 10 is of an inverted cone structure, and the screw rod 2 has certain tapping capacity through the pointed cone head 10.
The principle of operation of the present utility model will now be described as follows: when installing the fastener, insert screw rod 2 on two parts that need be fixed earlier, install nut 3 again, through rotating nut 3, thereby drive the internal thread 7 of nut 3 and screw rod 2 peripheral side screw thread between each other, make nut 3 pivoted simultaneously at screw rod 2 axial upward movement, when nut 3 is close two parts that need be fixed soon, a plurality of ejector pins 5 can contact with the part earlier, and compress spring 6 downwards, and then make a plurality of ejector pins 5 accomodate respectively in a plurality of recess 4, at this moment nut 3 and part contact, accomplish the installation, when the fastener receives external force in use, nut 3 has the trend of becoming flexible, at this moment through the restoring force effect of a plurality of springs 6, drive a plurality of ejector pins 5 upwards contact part, in case nut 3 rotates to the direction of becoming flexible, a plurality of ejector pins 5 top can upwards conflict part, and then make nut 3 be difficult to take place to rotate, prevent that the fastener from leading to the smooth silk to unable use because of external force, the service life of fastener has been prolonged the practicality of fastener, when need dismantle the fastener, through twisting bolt head 1, it rotates to drive bolt head 1 and screw rod 2.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The utility model provides a prevent not hard up fastener that excels in, includes bolt head (1) and fixed screw rod (2) that set up on bolt head (1), a serial communication port, threaded connection has nut (3) on screw rod (2), a plurality of recess (4) have been seted up to nut (3) upper end, nut (3) are located a plurality of recess (4) inner wall and all rotate and be provided with ejector pin (5), and is a plurality of ejector pin (5) are the slope setting, and a plurality of ejector pin (5) are annular array distribution, a plurality of ejector pin (5) bottom is all fixed be provided with spring (6), a plurality of spring (6) bottom all with recess (4) diapire fixed connection, a plurality of recess (4) are used for holding ejector pin (5).
2. A high strength fastener for preventing loosening as claimed in claim 1, wherein the inner surface of the nut (3) is provided with an internal thread (7) adapted to the screw (2).
3. A high strength fastener for preventing loosening as claimed in claim 1, wherein two lugs (8) are fixedly provided on the outer side wall of the nut (3), and the two lugs (8) are symmetrically provided.
4. The looseness-preventing high-strength fastener according to claim 1, wherein the upper end of the bolt head (1) is provided with a clamping groove (9), and the clamping groove (9) is of a cross-shaped structure.
5. The high-strength fastener for preventing loosening as claimed in claim 1, wherein the screw (2) is provided with a pointed cone (10) at the bottom end thereof, and the pointed cone (10) has an inverted cone structure.
6. A high strength fastener for preventing loosening as claimed in claim 1, wherein the bolt head (1) and the shank (2) are each made of low alloy steel.
7. The looseness-preventing high-strength fastener according to claim 1, wherein the surfaces of the bolt head (1), the screw (2) and the nut (3) are coated with an anti-corrosion layer, and the anti-corrosion layer is an epoxy resin coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323399785.8U CN221195696U (en) | 2023-12-13 | 2023-12-13 | High-strength fastener capable of preventing loosening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323399785.8U CN221195696U (en) | 2023-12-13 | 2023-12-13 | High-strength fastener capable of preventing loosening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221195696U true CN221195696U (en) | 2024-06-21 |
Family
ID=91517749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323399785.8U Active CN221195696U (en) | 2023-12-13 | 2023-12-13 | High-strength fastener capable of preventing loosening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221195696U (en) |
-
2023
- 2023-12-13 CN CN202323399785.8U patent/CN221195696U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |