CN206708171U - A kind of double nut self-locking fastener - Google Patents
A kind of double nut self-locking fastener Download PDFInfo
- Publication number
- CN206708171U CN206708171U CN201720467530.6U CN201720467530U CN206708171U CN 206708171 U CN206708171 U CN 206708171U CN 201720467530 U CN201720467530 U CN 201720467530U CN 206708171 U CN206708171 U CN 206708171U
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- Prior art keywords
- nut
- bolt
- self
- screw thread
- locking fastener
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Abstract
The utility model discloses a kind of double nut self-locking fastener, including bolt, the first nut, the second nut, the elastomeric pad that can produce plastic deformation under pressure；First nut is connected through a screw thread with bolt, and one end of the first nut is provided with external screw thread；The external screw thread composition screw thread pair of internal thread, the internal thread of the second nut and the first nut is provided with one end of second nut；Through hole is provided with the other end of second nut, bolt passes through the through hole of the second nut；When first nut and the installation of the second nut are tightened, elastomeric pad is between the first nut and the second nut；One week notch for being radially provided with cut-out screw thread silk of the bolt thread；The axial direction for being directed parallel to bolt of notch；Double nut self-locking fastener of the present utility model can be used as in general fastener fastening workpiece, and spacing effect can be also played as locating part.
Description
Technical field
The utility model belongs to equipment fixed network, particularly a kind of double nut self-locking fastener.
Background technology
Fastener, used and using extremely wide a kind of machine components as being fastenedly connected.It is extensive using industry, including energy
Source, electronics, electrical equipment, machinery, chemical industry, metallurgy, mould, hydraulic pressure etc. industry, various machineries, equipment, vehicle, ship, railway,
Above bridge, building, structure, instrument, instrument, chemical industry, instrument and articles for use etc., it can be seen that miscellaneous fastener, is
Most widely used mechanical basic part.The fields such as track, engineering machinery are being listed, it is severe due to application environment, to fastener
Requirement it is more harsh, if the loosening of fastener, serious influence consequence may be caused, cause substantial amounts of property loss, very
To being serious life cost.
In existing production technology, in engineering machinery, often workpiece is fastened using double nut, with working environment
Long-term vibration, due to thread pitch between nut and bolt be present, and there is no self-locking action, spiral shell between this nut and bolt
Relative displacement can be produced under effect of vibration between female and bolt, causes nut to be produced with bolt and loosens and lose the work of fastening
With.
The content of the invention
The technical problem that the utility model solves is to provide a kind of double nut self-locking fastener, to solve existing nut
With bolt can not self-locking and the problem of produce loosening.
The technical solution for realizing the utility model purpose is：
A kind of double nut self-locking fastener, including bolt, the first nut, the second nut, modeling can be produced under pressure
Property deformation elastomeric pad；First nut is connected through a screw thread with bolt, and one end of the first nut is provided with external screw thread；It is described
The external screw thread composition screw thread pair of internal thread, the internal thread of the second nut and the first nut is provided with one end of second nut；Second
Through hole is provided with the other end of nut, bolt passes through the through hole of the second nut；When first nut and the installation of the second nut are tightened, bullet
Property pad is between the first nut and the second nut；One week notch for being radially provided with cut-out screw thread silk of the bolt thread；
The axial direction for being directed parallel to bolt of notch.
The utility model compared with prior art, its remarkable advantage：
(1) double nut self-locking fastener of the present utility model, nut is provided with notch, under provided with being acted in extruding force
The elastomeric pad that can be plastically deformed so that the thread pitch that elastomeric pad is entered between nut and bolt by notch, rise
It is reliable and stable to self-locking action, fastening.
(2) double nut self-locking fastener of the present utility model is provided with groove and guide groove by nut end face, enhances bullet
Property pad slides further towards the ability in the gap between nut and bolt, enhances self-lock ability.
(3) pad is mounted in the end face of the first nut or the second nut by double nut self-locking fastener of the present utility model in advance
On, installation time of having slowed down, it is easy to assemble.
(4) double nut self-locking fastener of the present utility model can be used as in general fastener fastening workpiece, avoid workpiece
Loosened because of judder, spacing work is played in the centre that also bolt can be tightened in as locating part without loosening
With.
The utility model is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of the utility model double nut self-locking fastener.
Fig. 2 (a-b) is respectively the structural representation that bolt is provided with notch.
Fig. 3 is the enlarged diagram of fracture of wire notch on bolt.
Fig. 4 (a-b) is respectively the first nut, the second nut and structural representation of the elastomeric pad contact jaw provided with chamfering.
Fig. 5 (a-b) is respectively the main view and overlooking the structure diagram that the first nut is provided with guide groove.
Fig. 6 is the present invention looks up structural representation that the second nut is provided with guide groove.
Fig. 7 (a-b) is respectively the structural representation that elastomeric pad is embedded on the first nut or the second nut.
Embodiment
In order to illustrate the technical solution of the utility model and technical purpose, below in conjunction with the accompanying drawings and specific embodiment is to this reality
It is described further with new.
With reference to Fig. 1, Fig. 2 (a-b), Fig. 3, a kind of double nut self-locking fastener of the present utility model, including bolt 1, first
Nut 2, the second nut 3, the elastomeric pad 4 that plastic deformation can be produced under pressure；First nut 2 is logical with bolt 1
Threaded connection is crossed, one end of the first nut 2 is provided with external screw thread；Internal thread, the second nut are provided with one end of second nut 3
The external screw thread of 3 internal thread and the first nut 2 forms screw thread pair；Through hole is provided with the other end of second nut 3, bolt 1 passes through
Through hole；When first nut 2 and the installation of the second nut 3 are tightened, elastomeric pad 4 is between the first nut 2 and the second nut 3；Institute
State 1 screw thread of bolt one week and be radially provided with the notch 11 for cutting off screw thread silk；The axial direction for being directed parallel to bolt of notch 11；When
When two nuts 3 and the first nut 2 are tightened, under extruding force of the elastomeric pad 4 between the second nut 3 and the first nut 2, mould
Property deformation so that elastomeric pad 4 is entered by notch 11 in the thread pitch of first bolt 1 and the first nut 2, and the first spiral shell
In the thread pitch of the nut 3 of bolt 1 and second, by between the first bolt 1 and the first nut 2 and the first bolt 1 and the second nut 3
Irregular gap fill up, play a part of steady pin, the first bolt 1, the first nut 2, the second nut 3 closely locked
Come, play self-locking effect.
In further embodiment, the thickness of the elastomeric pad 4 is more than the first nut 2 and the second nut 3 and twisted naturally
Gap length when tight between (nonelastic pad 4) the two end face；The volume of elastomeric pad 4 is more than the first nut 2 and the second spiral shell
Cavity volume between end face both when mother 3 tightens naturally；Elastomeric pad 4 is twisted in the first nut 2 and the second nut 3
When tight, can sufficiently it be plastically deformed under extruding force effect, so that after elastomeric pad 4 is plastically deformed, energy
Enough gaps sufficiently filled up between the first bolt 1 and the first nut 2 and the first bolt 1 and the second nut 3.
Further, the end being connected with reference to Fig. 1 and Fig. 4 (a-b), first nut 2, the second nut 3 with elastomeric pad 4
Face is machined with V-type chamfering, V-type cavity of the opening towards bolt 1 is formed when the first nut 2 and the second nut 3 are tightened so that bullet
Property pad 4 the first nut 2, the second nut 3 pressurization under, elastomeric pad 4 prolong chamfering have to bolt 1 move trend, enter
One step enhancing elastomeric pad 4 slides to the ability of bolt 1 under squeezing action.
Preferably, it is machined with the first guiding with the end face that elastomeric pad 4 is connected with reference to Fig. 5 (a-b), first nut 2
Groove 21, first guide groove 21 are oriented the radial direction of the first nut 2；With reference to Fig. 6, equally, second nut 3 and cushion
The connected end face of piece 4 is machined with the second guide groove 31, and second guide groove 31 is oriented the radial direction of the second nut 3；Guide groove
Go deep into the contact face of nut and bolt 1 so that elastomeric pad 4 is more prone to enter nut from guide groove under extruding force effect
In the thread pitch of bolt 1.
Preferably, the material of the elastomeric pad 4 is the flexible metal materials such as lead, tin；In some embodiments, it is elastic
Pad 4 can also be the elastomeric material that nylon, rubber etc. can be plastically deformed under extruding force effect.
As the further improvement to above-mentioned implementation, with reference to Fig. 7 (a-b), the elastomeric pad 4 is embedded in the first nut 2
Or second nut 3 end face on, be easy to assemble, reduce the set-up time.
The notch 11, the first guide groove 21, the quantity of the second guide groove 31 are at least 1 respectively.
Above-mentioned embodiment is occurring to be plastically deformed into before thread pitch between nut and bolt 1 in elastomeric pad 4
Effect is put, can simply be combined；It is provided with such as on nut end face under guiding slot port, elastomeric pad 4 can be under extruding force
Into thread pitch, notch 11 can be also not provided with bolt 1；And for example set on the internal thread of the first nut 2 as on bolt 1
Notch 11 can also realize technique effect of the present utility model.
Above-mentioned bolt 1 is not pair and restriction of the present utility model, such as screw rod, the screwed part of leading screw
With；Round nut, outer-hexagonal nut etc. in the unlimited accompanying drawing of nut shape.
During installation, the first nut 2 is screwed on bolt 1 first, elastomeric pad is mounted in the first nut 2 or the second nut in advance
On 3 end face, the second nut 3 is penetrated from bolt 1, is tightened on the first nut 2；Further by the first nut 2 and the second spiral shell
Mother 3 is tightened, and elastomeric pad 4 is plastically deformed under extruding force effect, into the first nut 2 and bolt 1, the second nut 3 and
The thread pitch of bolt 1, play a part of similar steady pin and carry out self-locking, avoid gap between nut and bolt under vibration
Loosening is produced, fastening is reliable and stable；When the first nut 2 is directly tightened on the workpiece of bolt 1, it is ensured that workpiece is twisted
Tightly；When the first nut 2 is tightened in the centre of bolt 1, spacing effect can be played in the middle self-locking of bolt 1, only need to be by the
One nut 2 is screwed on bolt 1 needs spacing position in advance, then tightens the second nut.
Although the utility model is disclosed above with preferred embodiment, so it is not limited to the utility model.This reality
With new those of ordinary skill in the art, do not departing from spirit and scope of the present utility model, it is each when that can make
The change and retouching of kind.Therefore, the scope of protection of the utility model is worked as and is defined depending on those as defined in claim.
Claims (8)
1. a kind of double nut self-locking fastener, including bolt (1), the first nut (2), the second nut (3)；Characterized in that, also
Elastomeric pad (4) including plastic deformation can be produced under pressure；First nut (2) passes through screw thread with bolt (1)
Connection, one end of the first nut (2) is provided with external screw thread；Internal thread, the second nut are provided with one end of second nut (3)
(3) internal thread and the external screw thread of the first nut (2) forms screw thread pair；Through hole, bolt are provided with the other end of second nut (3)
(1) through hole of the second nut (3) is passed through；When the installation of first nut (2) and the second nut (3) is tightened, elastomeric pad (4) is positioned at the
Between one nut (2) and the second nut (3)；One week notch (11) for being radially provided with cut-out screw thread silk of bolt (1) screw thread；
The axial direction for being directed parallel to bolt of notch (11).
2. a kind of double nut self-locking fastener as claimed in claim 1, it is characterised in that first nut (2), the second spiral shell
Female (3) are machined with V-type chamfering, shape when the first nut (2) and the second nut (3) are tightened with the end face that elastomeric pad (4) is connected
V-type cavity into opening towards bolt (1).
3. a kind of double nut self-locking fastener as claimed in claim 1, it is characterised in that first nut (2) and elasticity
The connected end face of pad (4) is machined with the first guide groove (21), and first guide groove (21) is oriented the footpath of the first nut (2)
To；Second nut (3) is machined with the second guide groove (31), second guide groove with the end face that elastomeric pad (4) is connected
(31) it is oriented the radial direction of the second nut (3).
A kind of 4. double nut self-locking fastener as claimed in claim 1, it is characterised in that the material of the elastomeric pad (4)
For flexible metal materials.
A kind of 5. double nut self-locking fastener as claimed in claim 1, it is characterised in that the material of the elastomeric pad (4)
For nylon or rubber.
6. a kind of double nut self-locking fastener as described in claim 1 or 3, it is characterised in that the elastomeric pad (4) is inlayed
On the end face of the first nut (2) or the second nut (3).
A kind of 7. double nut self-locking fastener as claimed in claim 1, it is characterised in that the interior spiral shell of first nut (2)
Line is provided with notch.
8. a kind of double nut self-locking fastener as claimed in claim 1, it is characterised in that the notch (11), first are oriented to
Groove (21), the quantity of the second guide groove (31) are at least 1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467530.6U CN206708171U (en) | 2017-04-28 | 2017-04-28 | A kind of double nut self-locking fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467530.6U CN206708171U (en) | 2017-04-28 | 2017-04-28 | A kind of double nut self-locking fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206708171U true CN206708171U (en) | 2017-12-05 |
Family
ID=60457866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720467530.6U Expired - Fee Related CN206708171U (en) | 2017-04-28 | 2017-04-28 | A kind of double nut self-locking fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206708171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107586A (en) * | 2019-05-05 | 2019-08-09 | 海盐海马五金有限公司 | A kind of spring nut that anti-loosening performance is good |
| CN111946715A (en) * | 2020-08-21 | 2020-11-17 | 三马紧固件(浙江)股份有限公司 | Large square nut for automobile chassis connecting system |
-
2017
- 2017-04-28 CN CN201720467530.6U patent/CN206708171U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107586A (en) * | 2019-05-05 | 2019-08-09 | 海盐海马五金有限公司 | A kind of spring nut that anti-loosening performance is good |
| CN111946715A (en) * | 2020-08-21 | 2020-11-17 | 三马紧固件(浙江)股份有限公司 | Large square nut for automobile chassis connecting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171205 Termination date: 20210428 |