CN107588081A - Stop nut and locking fastening assembly - Google Patents
Stop nut and locking fastening assembly Download PDFInfo
- Publication number
- CN107588081A CN107588081A CN201711003255.3A CN201711003255A CN107588081A CN 107588081 A CN107588081 A CN 107588081A CN 201711003255 A CN201711003255 A CN 201711003255A CN 107588081 A CN107588081 A CN 107588081A
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- China
- Prior art keywords
- coil portion
- stop nut
- coil
- chamber
- connecting portion
- Prior art date
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Abstract
The present invention relates to a kind of stop nut, including：Spiral spring piece, with first coil portion adjacent to each other and the second coil portion, first coil portion is less than the second coil portion on radial dimension, the free end of first coil portion has the first connecting portion to extend radially outwardly, the free end of second coil portion has the second connecting portion that extends radially outwardly, and the wire rod of first coil portion and the second coil portion is by circularly screw winding；The stop nut improves the anti-loose problem in nut fastening, easily disassembled and higher without using specific purpose tool, removal efficiency.
Description
Technical field
The present invention relates to a kind of anti-loose fastener, in particular to stop nut.
Background technology
It is a large amount of in a device to realize connection using threaded fastener in fields such as automobile, Aero-Space and track traffics,
But for high intensity shock loading and alternate load in the case of, the anti-loose problem long-term existence of threaded fastener is existing
Some anti-loose structures are complicated, and dismounting is complicated and must use specific purpose tool, and dismounting is inconvenient, wastes time and energy, causes work to be imitated
Rate is low.
The content of the invention
For the drawbacks described above of prior art, the present invention provides a kind of stop nut, including：Spiral spring piece, there are that
This adjacent first coil portion and the second coil portion, first coil portion are less than the second coil portion, first coil on radial dimension
The free end in portion has the first connecting portion that extends radially outwardly, and the free end of the second coil portion has the to extend radially outwardly
The wire rod of two juts, first coil portion and the second coil portion is by circularly screw winding；And cylinder, its both ends are spacious
Open, include the first chamber and the second chamber, the second chamber formed with the accommodating chamber for accommodating screw thread spring part, accommodating chamber between its ends between
It is more than the first chamber on radial dimension, first coil portion is contained in the first chamber, and the second coil portion is contained in the second chamber, is being held
The side wall of chamber received is provided with the first limiting section and the second limiting section, and first connecting portion is stretched into the first limiting section, first connecting portion
It is circumferentially movable along cylinder, and the circumferential movement of first connecting portion is limited in the spatial dimension limited by the first limiting section,
Second connecting portion is securely maintained in the second limiting section.
Further, the first limiting section is configured to the recess formed in the side wall of the first chamber, and first connecting portion stretches into
Recess, spatial dimension are limited by recess.
Further, the first limiting section is configured to the open slot formed in the side wall of the first chamber, and first connecting portion is stretched
Enter open slot, spatial dimension is limited by open slot.
Further, the first limiting section is configured to two projections formed in the side wall of the first chamber, and two projections exist
Cylinder is circumferentially upper relative and spaced apart, and first connecting portion is blocked between two projections, and spatial dimension is limited at two projections
Between.
Further, the coil of first coil portion and/or the second coil is wound isometrically.
Further, the end coil that the free end of the second coil portion is located at relative to the second coil portion a part of line
Circle is oppositely wound.
Further, the end coil where the free end of the second coil portion is winding to the direction first of its adjacent windings
The side of coil portion.
Further, diametrically there is gap between the second coil portion and first coil portion.
Further, the second coil portion and first coil portion are coaxial lines.
Further, stop nut includes being located at the spring maintaining part of the openend for being adjacent to the second chamber of cylinder, spring
Maintaining part is used to spiral spring piece being maintained in accommodating chamber.
Further, spring maintaining part includes the flange extended in the second chamber, and flange bear against the upper of the second coil portion
Side.
Further, flange extends radially inwardly from the inward flange of openend or the side wall of the second chamber.
Further, stop nut includes circumferentially spacing and turned up the soil multiple flanges of setting.
Further, second connecting portion is configured to the U for rolling over and being formed from the free end wire rod of first coil portion to back bending
Type portion.
The present invention also provides a kind of locking fastening assembly, including bolt and above-mentioned stop nut, and bolt is passed through and is arranged in
Spiral spring piece in accommodating chamber is threadedly engaged with stop nut.
It is an object of the present invention to improve anti-loose under the shock loading and alternate load of high intensity of nut to ask
Topic；
It is another object of the present invention to cause stop nut to be easier to disassemble from bolt, and without using special
It is higher with instrument, removal efficiency.
A further object of the present invention is during stop nut is dismantled, to reduce to spiral spring piece therein
Damage risk.
Another object of the present invention is to enable the large batch of machine installing/dismounting of stop nut, carried efficient same
When ensure product installation uniformity.
By referring to the drawings to the present invention exemplary embodiment be described in detail, further feature of the invention and
Its advantage will be made apparent from.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 shows the schematic diagram of the spiral spring piece 1 of the stop nut according to the present invention；
Fig. 2 shows the upward view of the spiral spring piece 1 shown in Fig. 1；
Fig. 3 shows the sectional view of the cylinder 2 of the stop nut according to the present invention；
Fig. 4 shows the top view of the stop nut in Fig. 3；
Fig. 5 shows to be installed to cylinder in the stop nut assembled under state, wherein spiral spring piece 1 according to the present invention
In body 2；
Fig. 6 shows the sectional view of the stop nut assembled shown in Fig. 4；
Fig. 7 shows that stop nut and bolt install the locking fastening assembly formed afterwards.
Reference：1st, spiral spring piece；2nd, cylinder；3rd, bolt；11st, first coil portion；12nd, the second coil portion；13rd,
One jut；14th, second connecting portion；21st, the first chamber；22nd, the second chamber；23rd, the first limiting section；24th, side wall；25th, flange；26、
Second limiting section.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiment in the present invention, those of ordinary skill in the art are in no development creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation or position shown in the drawings and closed
System, it is for only for ease of the description present invention and simplifies description, in the case where not making opposite explanation, these nouns of locality do not indicate that
There must be specific orientation with the device or element for implying meaning or with specific azimuth configuration and operation, therefore can not manage
Solve as limiting the scope of the invention；The noun of locality " inside and outside " refer to relative to each part in itself inside and outside.As without separately
Statement, above-mentioned word do not have particular meaning, therefore it is not intended that limiting the scope of the invention.
In order to improve in the prior art, the present invention provides a kind of stop nut, below in conjunction with accompanying drawing 1-7 to the present invention's
Stop nut is described in detail.
As shown in figure 1, according to one embodiment of present invention, stop nut includes spring part 1, the wire rod quilt of spring part 1
It is helically wrapped, spring part 1 has the coil portion 12 of first coil portion 11 and second.The coil portion 12 of first coil portion 11 and second that
This is adjacent and connected and includes multiple spiral windings.First coil portion 11 is less than the second coil portion on radial dimension
12 so that, first coil portion 11 is located at the inner side of the second coil portion 12 in spiral spring piece 1 radially.
In one embodiment of the invention, the radial dimension of first coil portion 11 is slightly less than the spiral shell to be screwed into stop nut
The screw thread radial dimension of bolt 3, the radial dimension of the second coil portion 12 are more than the screw thread radial ruler of the bolt 3 to be screwed into stop nut
It is very little.
The free end of first coil portion 11 has the first connecting portion 13 to extend radially outwardly, and first connecting portion 13 protrudes from
The coil of first coil portion 11.
The free end of second coil portion 12 has the second connecting portion 14 that extends radially outwardly, for example, it is as shown in Figure 2 from
U-shaped portion is formd to back bending folding, naturally it is also possible to be other shapes from the wire rod held.
As shown in Fig. 2 the wire rod of the coil portion 12 of first coil portion 11 and second is all by circularly screw winding.
In one embodiment of the invention, the circular coil of the second coil portion 12 and the circular coil of first coil portion 11
Certain interval is spaced, both circular coils diametrically can also be close to each other certainly.
In one embodiment of the invention, the coil of first coil portion 11 is isometrical the coil of second coil portion 12
Can also be isometrical.
In one embodiment of the invention, as shown in Fig. 2 the end coil that the free end of the second coil portion 12 is located at
Oppositely wound relative to a part of coil of the second coil portion 12 so that the coil of the second coil portion 12 is overlapping on part
, so can be in the case where ensuring that the number of coils is enough, the height of reduction spiral spring piece 1 so that its compact dimensions.
In one embodiment of the invention, the end coil where the free end of the second coil portion 12 be winding to against
The side towards first coil portion 11 of adjacent windings.
As shown in figure 3, according to one embodiment of present invention, stop nut includes cylinder 2, and the both ends of cylinder 2 are open
, hollow accommodating chamber is formed between its ends between, and for accommodating the accommodating chamber of screw thread spring part 1, cylinder 2 is in accommodating chamber
Lower section is additionally provided with screwed hole, is engaged for the screw flight with screwing in stop nut.
Accommodating chamber includes the first chamber 21 and the second chamber 22, and the second chamber 22 is more than the first chamber 21 on radial dimension.First Line
Circle portion 11 is mounted in first chamber 21, and second coil portion 12 is disposed with second chamber 22.
It is extend into the side wall 24 of first chamber 22 formed with the first limiting section 23, the first connecting portion 13 of first coil portion 11
In first limiting section 23.Second chamber 22 is provided with the second limiting section 26 in its side wall, for the second coil portion 12 of fixed holding
Second connecting portion 14, so when the second coil portion 12 is arranged in the second chamber 22, the second coil portion 12 will not be with insertion
The rotation of the screw rod 3 of nut and rotate.
When screw rod 3 screws in stop nut, screw rod 3 can sequentially pass through the coil portion 12 of first coil portion 11 and second.First
Coil portion 11 can be wrapped on the screw thread of screw rod 3, have gap between the second coil portion 12 and screw rod 3.When screw rod 3 is threaded in or out
During first coil portion 11, the free end of first coil portion 11 can move in the circumferential direction with the rotation of screw rod 3, then first connecting portion
13 can move along the circumference of cylinder 2.
Because first connecting portion 13 is stretched into the first limiting section 23, therefore the circumference movement of first connecting portion 13 is limited in
In spatial dimension by the first limiting section 23, the first limiting section 23 has a preset length, first coil in cylinder circumference
The first connecting portion 13 in portion 11 can move in the range of this preset length along the circumference of cylinder 2.
In an embodiment of the invention, the first limiting section 23 is located in the side wall 24 of the first chamber 21, the second limiting section 24
It is located in the side wall 24 of the second chamber 22.
In one embodiment of the invention, the first limiting section 23 is configured to what is formed in the side wall 24 of the first chamber 21
Recess, recess is radially outward recessed from side wall 24, and first connecting portion 13 extend into recess and can moved in recess inner circumferential
It is dynamic.
In one embodiment of the invention, what the first limiting section 23 was configured to be formed in the side wall of the first chamber 21 opens
Mouth groove, first connecting portion 13 stretch into open slot, and open slot can be elongated, circular or oval, first connecting portion 13
It can be moved in open slot inner circumferential.
In one embodiment of the invention, the first limiting section 23 is configured to what is formed in the side wall 24 of the first chamber 21
Two projections, two projections are relative and arranged spaced apart in cylinder circumference, and first connecting portion 13 is extend between two projections
And stopped by projection, so as to circumferentially be moved between two projections.
In one embodiment of the invention, as shown in figure 4, the second limiting section 26 is formed on the side wall of the second chamber 22
On, and its shape is constructed in being adapted with the shape of second connecting portion 14, is held in so as to which second connecting portion 14 is fixed
Wherein.
As shown in figure 5, cylinder 2 includes spring maintaining part 25, what spring maintaining part 25 was located at cylinder is adjacent to the second chamber 22
Openend, spring maintaining part keep the second coil portion 12, prevent spiral spring piece 1 from accommodating chamber deviate from.
In one embodiment of the invention, spring maintaining part 25 includes flange, and the flange is extended in the second chamber 22, from
And positioned at the upside of the second coil portion 12.Alternatively, flange 25 is from the inward flange of openend or the footpath of side wall 24 of the second chamber 22
To extending internally.
In one embodiment of the invention, the quantity of flange 25 is multiple, and multiple flanges 25 are circumferentially at interval
Arrangement, preferably equally spacedly.
As Fig. 6 shows the stop nut that spiral spring piece 1 is installed in cylinder 2, Fig. 5's is installed to bolt 3 below
The process of stop nut is described.
When stop nut is installed on bolt 3, stop nut 6 turns clockwise in the presence of external force, and bolt 3 is first
The second coil portion 12 is subsequently passed through through first coil portion 11.As bolt 3 is gradually screwed in first coil portion 11, positioned at first
The coil of the free end of coil portion 11 also can rotate clockwise certain angle with the rotation of screw rod, and first connecting portion 13 is
Circumferentially moved a certain distance along cylinder in one limiting section 23, the circumferential lengths of the first limiting section 23 are configured to revolve in bolt 3
Fashionable permission first connecting portion 13 is circumferentially moved without stopping it along cylinder.This assures first coil portion 1
It is not damaged when nut is tightened.
When stop nut is pulled down from bolt 3, stop nut rotate counterclockwise in the presence of external force, helical spring
The first coil portion 1 of part 1 can be held tightly on the screw thread of bolt 3, because the second connecting portion 14 of the second coil portion 12 is protected by fixed
Hold in the second limiting section 26 of the second chamber 22 of stop nut so that the second coil portion 12 is fixed relative to stop nut
And rotate therewith.With the rotation of stop nut, first coil portion 11 more and more tightly embraces the screw thread of bolt 3, until
The circumferential edge for being moved to the first limiting section 23 of first connecting portion 13 of first coil portion 11 is abutted together with it.First is spacing
Portion 23 can apply active force in first coil portion 11 so that and first coil portion 11 can rotate together with stop nut, so as to
Do not hold bolt 3 tightly yet further.Which ensures that the situation of the holding predetermined resistance of first coil portion 1 in spiral spring piece 1
It is lower to disassemble stop nut from bolt 3.In unloading process, need to only common instrument be used to complete stop nut
Dismounting, without specific purpose tool.
Fig. 7 shows a kind of locking fastening assembly, and the locking fastening assembly includes bolt 3 (its nut is not shown) and above-mentioned
Stop nut, bolt 3 screws in the barrier part 2 of stop nut, is first combined, then passes through with the threaded portion of barrier part 2 from below
First coil portion 11, first coil portion 11 are wrapped on screw flight, are subsequently passed through the second coil portion 12.
The exemplary embodiment of the present invention is these are only, is not intended to limit the invention, it is all in the spiritual and former of the present invention
Within then, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (15)
1. a kind of stop nut, including：Spiral spring piece (1), there is first coil portion (11) and the second coil adjacent to each other
Portion (12), the first coil portion (11) are less than second coil portion (12), the first coil portion on radial dimension
(11) free end has the first connecting portion (13) to extend radially outwardly, and the free end of second coil portion (12) has footpath
To the second connecting portion (14) to stretch out, the wire rod of the first coil portion (11) and second coil portion (12) by
Circularly screw winding；And cylinder (2), its both ends is unlimited, between its ends between formed with the receiving screw thread spring
The accommodating chamber of part (1), the accommodating chamber include the first chamber (21) and the second chamber (22), and second chamber (22) is on radial dimension
More than first chamber (21), first coil portion (11) is contained in first chamber (21), and second chamber (22) accommodates
Second coil portion (12), the first limiting section (23) and the second limiting section are provided with the side wall (24) of the accommodating chamber
(26), the first connecting portion (13) is stretched into first limiting section (23), and the first connecting portion (13) is along the cylinder
It is circumferential movable, and the circumferential movement of the first connecting portion (13) is limited in the sky limited by first limiting section (23)
Between in the range of, the second connecting portion (14) is securely maintained in second limiting section (26).
2. stop nut according to claim 1, it is characterised in that first limiting section (23) is configured to described
The recess formed in the side wall (24) of first chamber (21), the first connecting portion (23) stretch into the recess, the spatial dimension
Limited by the recess.
3. stop nut according to claim 1, it is characterised in that first limiting section (23) is configured to described
The open slot formed in the side wall (24) of first chamber (21), the first connecting portion (23) stretch into the open slot, the space
Scope is limited by the open slot.
4. stop nut according to claim 1, it is characterised in that first limiting section (23) is configured to described
Two projections formed in the side wall (24) of first chamber (21), described two projections are relative in the cylinder circumference and are spaced
Open, the first connecting portion (23) is blocked between described two projections, and the spatial dimension is limited at described two projections
Between.
5. stop nut according to claim 1, it is characterised in that the first coil portion (11) and/or described second
The coil of coil (12) is wound isometrically.
6. stop nut according to claim 1, it is characterised in that the free end of second coil portion (12) is located at
End coil oppositely wound relative to a part of coil of second coil portion (12).
7. stop nut according to claim 6, it is characterised in that where the free end of second coil portion (12)
End coil is winding to the side of the direction first coil portion (11) of its adjacent windings.
8. stop nut according to claim 1, it is characterised in that second coil portion (12) and the first coil
Diametrically there is gap in portion between (11).
9. stop nut according to claim 1, it is characterised in that second coil portion (12) and the first coil
Portion (11) is coaxial line.
10. stop nut according to claim 1, it is characterised in that be adjacent to described including be located at the cylinder
The spring maintaining part (25) of the openend of two chambers (22), the spring maintaining part (25) are used to protect the spiral spring piece (1)
Hold in the accommodating chamber.
11. stop nut according to claim 10, it is characterised in that the spring maintaining part includes extending to described the
Flange in two chambers (22), the flange are located at the upside of second coil portion (12).
12. stop nut according to claim 11, it is characterised in that inner edge of the flange (25) from the openend
The side wall (24) of edge or second chamber (22) extends radially inwardly.
13. stop nut according to claim 11, it is characterised in that multiple institutes including circumferentially spaced set
State flange.
14. stop nut according to claim 1, it is characterised in that the second connecting portion (26) is configured to by institute
State the U-shaped portion that the free end wire rod of first coil portion (11) is rolled over and formed to back bending.
15. a kind of locking fastening assembly, including bolt (3) and the locking spiral shell according to any one in claim 1-14
Mother, the bolt (3) pass through the spiral spring piece (1) being arranged in the accommodating chamber to be threadedly engaged with the stop nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003255.3A CN107588081A (en) | 2017-10-24 | 2017-10-24 | Stop nut and locking fastening assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003255.3A CN107588081A (en) | 2017-10-24 | 2017-10-24 | Stop nut and locking fastening assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107588081A true CN107588081A (en) | 2018-01-16 |
Family
ID=61043699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711003255.3A Pending CN107588081A (en) | 2017-10-24 | 2017-10-24 | Stop nut and locking fastening assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588081A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065838A (en) * | 2019-06-11 | 2020-12-11 | 天津华能北方热力设备有限公司 | Spring combination locking connecting piece |
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| CN207701576U (en) * | 2017-10-24 | 2018-08-07 | 西藏深元投资有限公司 | Stop nut and locking fastening assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065838A (en) * | 2019-06-11 | 2020-12-11 | 天津华能北方热力设备有限公司 | Spring combination locking connecting piece |
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Application publication date: 20180116 |
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