CN208221293U - A kind of reusable fastener - Google Patents
A kind of reusable fastener Download PDFInfo
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- CN208221293U CN208221293U CN201820571002.XU CN201820571002U CN208221293U CN 208221293 U CN208221293 U CN 208221293U CN 201820571002 U CN201820571002 U CN 201820571002U CN 208221293 U CN208221293 U CN 208221293U
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- nut
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Abstract
The utility model discloses a kind of reusable fastener, the fastener includes screw rod, main nut, anti-rotation card cap and secondary nut, screw rod has one section of first notch along axial direction from end, the section of main nut is T-shaped, i.e. main nut has the secondary cap of protrusion along axial direction, the tapped through hole that the middle part of main nut is and screw rod cooperates, the groove of the densely covered strip of the lateral surface of secondary cap；The section of anti-rotation card cap is H-shaped, is equipped in middle section along axial smooth bore, and have the second notch on the smooth bore, makes the arc-shaped through-hole of the through-hole, the second notch and first notch match；Elastic chuck is provided on the medial surface of anti-rotation card cap upper and lower side；The tapped through hole that the middle part of secondary nut is and screw rod cooperates, groove of the outer wall along axial direction also densely covered strip.The fastener can accomplish to realize never becoming loose in any violent vibration, and the precision of fastening is very high, and within the service life of material, fastener does not damage and can dismantle use repeatedly.
Description
Technical field
The utility model relates to fastener areas, and in particular to a kind of reusable fastener.
Background technique
In many mechanical equipment installation engineerings, bolt, nut are one of indispensable accessories, its effect is will to set
Standby each component is firmly coupled, and equipment is made to run well.
Currently used nut, since the external forces such as vibration are easy to produce loosening, is easy to appear during machine operation
Failure influences job schedule.
Nut is common and indispensable fastener in mechanical equipment installation engineering.Due to being generated in the operation of a machine
Vibration, other external forces and factors cause nut loosening even to fall off over time etc., can thus give the normal fortune of machine
Turn to cause important influence.In existing technology, add split pin, in nut in slotted nut to prevent nut loosening from mostly using greatly
Increase the measure of spiral shell pad and locking glue below, but it is very laborious in disassembly in this way, it cannot reuse, and prevent
The effect of loosening is also undesirable, equally can bring security risk to the operation of a machine.
There is vibration to generate when common mechanical machine operation, this not only consumes a part of power, wastes energy, vibrates simultaneously
Each connecting component can be also caused to generate loose phenomenon, especially at the position of nut bolt connection, once there is nut loosening
The possibility to fall off is just had, accident is caused to generate.
At present when clamping workpiece, screw rod is usually worn in the perforation of workpiece, is then used at the both ends of screw rod single
Or two nut checks, but even if still still can loosen using two nut checks, keep locking not firm, in screw rod
Nut can not be dismantled in the case that end is damaged, and be all an exposure to outside additionally, due to nut and screw rod, with the erosion of rainwater, make
Nut and screw rods from rusting, disassembly are difficult.
Fastener is to be fastenedly connected with and apply extremely wide a kind of machine components.Fastener, it is wide using industry
It is general, including the energy, electronics, electric appliance, machinery, chemical industry, metallurgy, mold, hydraulic etc. industry, various machinery, equipment, vehicle,
Above ship, railway, bridge, building, structure, tool, instrument, chemical industry, instrument and articles etc., it can be seen that miscellaneous
Fastener is most widely used mechanical basic part.Its feature is that description is various, and performance purposes is different, and standard
Change, seriation, unitized degree are also high.
Generally spring washer or cushion are used currently used for the nut of solid mechanical part or workpiece as elastic material to keep away
Exempt from the loosening of nut, but they have common weakness, that is, be not used in the environment of vibration and keep long-term fastening, is easy de-
It falls.Another is exactly the locking nut of Japanese Hadlock (HardLock), and locking effect is good, but eccentric design is to manufacture
Technique requires high and high production cost.
" the tapered thread body of bolt and tapered thread nut " patent (105443546 A of CN) of trip Yi Hua has changed spiral shell
Angular thread has been changed to tapered thread by the structure of line, and vibration test is found out, the fastening that do not loosen of screw thread is promoted from 30,000 times
To 13.6 ten thousand times, fastening situation is promoted, but for shaking violent equipment, also fails to the never becoming loose for really solving screw thread
Problem.
In the environment of high vibration, the nut that is able to achieve " never becoming loose " and can reuse only is inserted at present
Selling class product, (such as Zhao's Zhe, Guangzhou Car Group Co., Ltd, the patent No. is 103216512 A of CN, i.e., with bolt to spiral shell
Cap is confined, it is made not rotate in vibration.In work, the loosening of fastener is because fastening nut is sent out in vibration
Life rotates and fastener is caused to loosen.The bolt class product one of them the disadvantage is that fastening precision lacked, nut
Rotation 180 degree there was only the socket in 3 directions namely the fastening precision of nut is 60 degree of rotation angles of nut.So must in it
It must fastening of one gasket with notch elasticity of pad to help fastener.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the prior arts, it is simple to provide a kind of structure, easy to use, fixed
The nut of firm never becoming loose.Specific technical solution is as follows:
A kind of reusable fastener, which is characterized in that the fastener include screw rod, main nut, anti-rotation card cap and
Secondary nut；
The screw rod has one section of first notch along axial direction from end；
The section of the main nut be it is T-shaped, i.e., main nut has the secondary cap of protrusion along axial direction, in the main nut
The main nut tapped through hole that portion is and the screw rod cooperates, the groove of the densely covered strip of the lateral surface of the secondary cap；
The section of the anti-rotation card cap is H-shaped, is equipped in middle section along axial smooth bore, and the smooth bore
On have the second notch, make the arc-shaped through-hole of the through-hole, second notch and first notch match；Anti-rotation card
Elastic chuck is provided on the medial surface of cap upper and lower side；
The secondary nut tapped through hole that the middle part of the secondary nut is and screw rod cooperates, outer wall is along axial direction also densely covered strip
Groove；
When tightened, the screw rod passes through fastener, and the main nut screwing compresses fastener on screw rod,
The smooth bore of the anti-rotation card cap passes through the first notch of screw rod, and the elastic chuck in its lower end inside face compresses main nut
Secondary cap lateral surface groove；The secondary nut screwing is on screw rod, and the elastic chuck of the upper end medial surface of anti-rotation card cap
Compress the groove of the outer wall of time nut.
Preferably, the head of the elastic chuck is sphenoid bur, the pair with the groove of the outer wall of secondary nut, main nut
The lateral surface groove of cap mutually links closely, and prevents the rotation of main nut and time nut.
Preferably, the outer wall of the anti-rotation card cap is hex nut shape.
Preferably, the lateral wall of the main nut is also hex nut shape or circle.
Preferably, the outer diameter of the main nut is equal with the outer diameter of the screw head of the screw rod.
The beneficial effects of the utility model are as follows:
1. can accomplish to realize never becoming loose in any violent vibration, the precision of fastening is very high, it might even be possible to realize
1 degree of corner accuracy below, unlike the precision of bolt-type is 60 degree；
2. fastener does not damage and can dismantle use repeatedly within the service life of material.
Detailed description of the invention
Fig. 1 is the assembly structure diagram of the fastener of the utility model；
Fig. 2 is the structural schematic diagram of screw rod；
Fig. 3 is the structural schematic diagram of time nut；
Fig. 4 is the structural schematic diagram of anti-rotation card cap；
Fig. 5 is the structural schematic diagram of main nut；
Wherein, 1- screw rod；2- nut；3- anti-rotation card cap；The main nut of 4-；5- fixture；The first notch of 11-；21- is recessed
Slot；22- nut tapped through hole；31- elastic chuck；32- smooth bore；The second notch of 33-；41- pair cap；The main nut spiral shell of 42-
Line through-hole.
Specific embodiment
The utility model is described in detail below according to attached drawing and preferred embodiment, the purpose of this utility model and effect will become
It must be more clearly understood that, below in conjunction with drawings and examples, the present invention will be further described in detail.It should be appreciated that herein
Described specific embodiment is only used to explain the utility model, is not used to limit the utility model.
As shown in Figs. 1-5, a kind of reusable fastener, the fastener include screw rod 1, main nut 4, anti-rotation card cap
3 form with time nut 2；
Screw rod 1 has one section of first notch 11 along axial direction from end；
The section of main nut 4 be it is T-shaped, i.e., main nut 4 has the secondary cap 41 of protrusion along axial direction, in the main nut 4
The main nut tapped through hole 42 that portion is and the screw rod 1 cooperates, the groove of the densely covered strip of the lateral surface of the secondary cap 41.It is main
The effect of nut 4 is to play the role of fixed fixture 5.
The section of the anti-rotation card cap 3 is H-shaped, is equipped in middle section along axial smooth bore 32, and this is smooth
There is the second notch 33 on through-hole 32, make the arc-shaped through-hole of through-hole 32, the second notch 33 and the first notch 11 match, and prevent
Anti-rotation nut 3 rotates；Elastic chuck 31, the head of elastic chuck 31 are provided on the medial surface of 3 upper and lower side of anti-rotation card cap
It is sphenoid bur, matches and act on the groove 21 of the outer groove of secondary cap 41, secondary nut outer and mutually link closely, led to prevent
The rotation of nut 4 and time nut 2.The effect of anti-rotation card cap 3 is to prevent the rotation of main nut 4 and time nut 2.
The secondary nut tapped through hole 22 that the middle part of the secondary nut 2 is and screw rod 1 cooperates, outer wall also gather along axial direction
The groove 21 of strip；The effect of secondary nut 2 is to prevent anti-rotation card cap 3 from sliding in and out.
When tightened, the screw rod 1 is passed through by the hole of fastener, tightens fastening with main nut 4；The of anti-rotation card cap 3
Two notches 33 are directed at the first notch 11 of screw rod 1, and anti-rotation card cap 3 is added on screw rod 1；Secondary nut 2 is screwed on screw rod 1 again,
And it tightens.With tightening for secondary nut 2, the outer strip of the secondary cap 41 on elastic chuck 31 and main nut 4 on anti-rotation card cap 3
Groove phase separation, while also and 21 phase separation of outer groove of time nut 2.First notch 11 of screw rod 1 prevents anti-rotation card
The rotation of cap 3, the elastic chuck 31 on anti-rotation card cap 3 prevent the rotation of main nut 4 and time nut 2.Prevent turning for main nut 4
It is dynamic, it is prevented that the loosening of fastener in vibration；Prevent the rotation of time nut 2, it is prevented that in vibration anti-rotation card cap 3 cunning
It falls.To realize the function of the utility model never becoming loose nut fastener never becoming loose.
Preferably, the outer wall of the anti-rotation card cap 3 is hex nut shape.
Preferably, the lateral wall of the main nut 4 is also hex nut shape or circle.
Preferably, the outer diameter of the main nut 4 is equal with the outer diameter of screw head of screw rod 1.
It will appreciated by the skilled person that the foregoing is merely the preferred embodiments of utility model, and do not have to
In limitation utility model, although utility model is described in detail referring to previous examples, for those skilled in the art
Member for, can still modify to the technical solution of aforementioned each case history, or to part of technical characteristic into
Row equivalent replacement.With within principle, modification, equivalent replacement for being made etc. should be included in practical new all spirit in utility model
Within the protection scope of type.
Claims (5)
1. a kind of reusable fastener, which is characterized in that the fastener includes screw rod (1), main nut (4), anti-rotation card
Cap (3) and time nut (2)；
The screw rod (1) has one section of first notch (11) along axial direction from end；
The section of the main nut (4) be it is T-shaped, i.e., main nut (4) along axial direction have protrusion secondary cap (41), the main spiral shell
The main nut tapped through hole (42) that the middle part of cap (4) is and the screw rod (1) cooperates, the lateral surface of the secondary cap (41) are close
The groove of cloth strip；
The section of the anti-rotation card cap (3) is H-shaped, is equipped in middle section along axial smooth bore (32), and this is smooth
There are the second notch (33) on through-hole (32), making the through-hole (32) is arc-shaped through-hole, second notch (33) and described
First notch (11) matches；Elastic chuck (31) are provided on the medial surface of anti-rotation card cap (3) upper and lower side；
The secondary nut tapped through hole (22) that the middle part of the secondary nut (2) is and screw rod (1) cooperates, outer wall is also close along axial direction
The groove (21) of cloth strip；
When tightened, the screw rod (1) passes through fixture, and the main nut (4) screws on screw rod (1), and compresses
Fixture, the smooth bore (32) of the anti-rotation card cap (3) pass through first notch of screw rod (1), and its lower end inside face
Elastic chuck (31) compress main nut (4) secondary cap (41) lateral surface groove；The secondary nut (2) is screwed in screw rod
(1) on, and the elastic chuck (31) of the upper end medial surface of anti-rotation card cap (3) compresses the groove (21) of the outer wall of time nut (2).
2. reusable fastener according to claim 1, which is characterized in that the head of the elastic chuck (31)
Portion is sphenoid bur, mutual with groove (21), the lateral surface groove of the secondary cap (41) of main nut (4) of the outer wall of secondary nut (2)
It links closely, prevents the rotation of main nut (4) and time nut (2).
3. reusable fastener according to claim 1, which is characterized in that outside the anti-rotation card cap (3)
Wall is hex nut shape.
4. reusable fastener according to claim 1, which is characterized in that the outside of the main nut (4)
Wall is also hex nut shape or circle.
5. reusable fastener according to claim 1, which is characterized in that the outer diameter of the main nut (4)
It is equal with the outer diameter of screw head of screw rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820571002.XU CN208221293U (en) | 2018-04-20 | 2018-04-20 | A kind of reusable fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820571002.XU CN208221293U (en) | 2018-04-20 | 2018-04-20 | A kind of reusable fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208221293U true CN208221293U (en) | 2018-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820571002.XU Active CN208221293U (en) | 2018-04-20 | 2018-04-20 | A kind of reusable fastener |
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| Country | Link |
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| CN (1) | CN208221293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425928A (en) * | 2018-04-20 | 2018-08-21 | 浙江树人学院 | A kind of reusable fastener |
| CN110360206A (en) * | 2019-07-25 | 2019-10-22 | 海盐宏合标准件有限公司 | A kind of dismountable anti-loose anti-theft bolt module |
-
2018
- 2018-04-20 CN CN201820571002.XU patent/CN208221293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425928A (en) * | 2018-04-20 | 2018-08-21 | 浙江树人学院 | A kind of reusable fastener |
| CN110360206A (en) * | 2019-07-25 | 2019-10-22 | 海盐宏合标准件有限公司 | A kind of dismountable anti-loose anti-theft bolt module |
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