CN210739094U - Automatic locking anti-loosening composite nut - Google Patents
Automatic locking anti-loosening composite nut Download PDFInfo
- Publication number
- CN210739094U CN210739094U CN201921154815.XU CN201921154815U CN210739094U CN 210739094 U CN210739094 U CN 210739094U CN 201921154815 U CN201921154815 U CN 201921154815U CN 210739094 U CN210739094 U CN 210739094U
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- Prior art keywords
- nut
- outer sleeve
- composite
- step surface
- loosening
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- Expired - Fee Related
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- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 230000000694 effects Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses an automatic locking compound nut that moves, include: the composite nut comprises a composite nut body, wherein the composite nut body consists of an outer sleeve and an inner nut, the length of the outer sleeve is 3-5 mm greater than the total length of the inner nut, and the length of the outer sleeve is in direct proportion to the increase of the specification and the model of the nut. The outer sleeve is of a hollow hexagonal structure, the interior of the outer sleeve is sequentially divided into two intervals from top to bottom, the two intervals are separated by a step surface, and an inner hexagon is arranged above the step surface and is in clearance fit with the inner nut; the lower part of the step surface is a reverse taper with a big upper part and a small lower part. Compared with other existing self-locking nuts, the composite nut only needs to be screwed in once, and the Hard Lock nut needs to be screwed in two nuts; compared with the other anti-loosening nut with the gasket, once the gasket is loosened by external force, the anti-loosening effect of the nut is completely lost.
Description
Technical Field
The utility model belongs to the fastener field, specific composite nut that says so, more specifically the requirement of factor of safety that is applicable to that says so requires highly, has the bolt-up occasion of locking not hard up requirement, and the use of this nut does not have an automatic locking compound of locking not hard up of special requirement to supporting bolt
And a nut.
Background
Along with the large-scale of the manufacturing equipment in China, the requirements on the stability and the reliability of various power transmissions are higher and higher, particularly the requirements on the reliability of bolt connection and fastening in the aspects of steel structure buildings and vehicles relating to personnel safety are stricter, and even nuts which are never loosened are required.
Disclosure of Invention
The utility model discloses to the harsh requirement of nut safety in utilization, reliability in some special occasions, designed an automatic locking composite nut that moves, this kind of nut is at the in-process of screwing, when the nut screws to the fastening surface, composite nut along with further screwing, composite nut's overcoat produces the radial force that compresses tightly to the internal nut, makes the screw thread of nut and screw rod compress tightly, accomplishes the screw thread and detains mutually, realizes the purpose of locking moving.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: an automatic locking anti-loosening composite nut, comprising: the composite nut comprises a composite nut body, wherein the composite nut body is composed of an outer sleeve and an inner nut, the length of the outer sleeve is larger than the total length of the inner nut by 3-5 mm, the length of the outer sleeve is in direct proportion with the increase of the specification and the model of the nut, namely the larger the size of the nut is, the larger the height of the nut is. The outer sleeve is of a hollow hexagonal structure, the interior of the outer sleeve is sequentially divided into two intervals from top to bottom, the two intervals are separated by a step surface, and an inner hexagon is arranged above the step surface and is in clearance fit with the inner nut, so that the inner nut can be embedded conveniently; the lower part of the step surface is a reverse taper with a big upper part and a small lower part.
Furthermore, the upper half part of the inner nut is of a hexagonal structure of a common nut, the lower half part of the inner nut is of an inverted cone shape with a large upper part and a small lower part, and symmetrical openings are formed in the inverted cone shape, so that the nut can be conveniently contracted when being screwed and can be automatically locked.
The upper half part and the lower half part of the inner nut are provided with internal threads.
Furthermore, the height above the step surface is 0.5-1 mm greater than the height of the upper half part of the inner nut, and the difference value of the parts is to ensure that the composite nut can be effectively locked in the screwing process.
Compared with other existing self-locking nuts, the composite nut only needs to be screwed in once, and the Hard Lock nut needs to be screwed in two nuts; compared with the other anti-loosening nut with the gasket, once the gasket is loosened by external force, the anti-loosening effect of the nut is completely lost.
Drawings
Fig. 1 is a schematic view of the combined structure of the present invention.
Fig. 2 is a cross-sectional view of the jacket of the present invention.
Fig. 3 is a schematic structural view of the inner nut of the present invention.
1. The nut comprises an outer sleeve, 2, an inner nut, 3, a step surface, 4, an opening, 5 and an internal thread.
Detailed Description
The present invention will be further explained with reference to the following description of the drawings.
Fig. 1 to fig. 3 show a preferred embodiment of the present invention, which shows an automatic locking and anti-loosening composite nut, comprising: the composite nut comprises a composite nut body, wherein the composite nut body is composed of an outer sleeve and an inner nut, the length of the outer sleeve is larger than the total length of the inner nut by 3-5 mm, the length of the outer sleeve is in direct proportion with the increase of the specification and the model of the nut, namely the larger the size of the nut is, the larger the height of the nut is. The outer sleeve is of a hollow hexagonal structure, the interior of the outer sleeve is sequentially divided into two intervals from top to bottom, the two intervals are separated by a step surface, and an inner hexagon is arranged above the step surface and is in clearance fit with the inner nut, so that the inner nut can be embedded conveniently; the lower part of the step surface is a reverse taper with a big upper part and a small lower part.
Furthermore, the upper half part of the inner nut is of a hexagonal structure of a common nut, the lower half part of the inner nut is of an inverted cone shape with a large upper part and a small lower part, and symmetrical openings are formed in the inverted cone shape, so that the nut can be conveniently contracted when being screwed and can be automatically locked.
The upper half part and the lower half part of the inner nut are provided with internal threads.
Furthermore, the height above the step surface is 0.5-1 mm greater than the height of the upper half part of the inner nut, and the difference value of the parts is to ensure that the composite nut can be effectively locked in the screwing process.
The utility model discloses a use method and principle: firstly, combining an inner nut with an outer sleeve or firstly sleeving the outer sleeve on a bolt, then screwing the inner nut along a screw rod, and then matching the inner nut with the outer sleeve; in the screwing process, the outer sleeve is firstly contacted with the fastening surface, the outer sleeve generates outward thrust, and the outer hexagon of the inner nut gradually sinks into the outer sleeve in the screwing force increasing process; in the process, the inverted cone part of the lower half part of the inner nut and the inverted cone surface of the outer sleeve are gradually compressed, so that the thread screw thread of the inverted cone structure of the lower half part of the inner nut and the screw thread of the screw rod are compressed, and self-locking is realized.
In the fastening process of the composite nut, the outer sleeve is in contact with the fastening surface, the relative contact area is smaller than that of a common nut, the friction resistance of the fastening surface is smaller, and the effective fastening of the nut is facilitated; simultaneously, after fastening in place, still be overcoat and fastening surface contact, take place impact, vibration at the fastening surface, at first the overcoat receives the impact force, and this impact force transmits interior nut, because the contact surface principle of obconic makes the screw thread of interior nut compress tightly with the screw rod screw thread more, and the auto-lock power increases, effectively realizes locking effect of moving.
After the composite nut is disassembled, the screw rod is not damaged, but in the disassembling process, the disassembling force for disassembling the nut is larger, the self-locking force of the nut can be thoroughly loosened only after the outer sleeve is separated from the inner nut after the nut is disassembled 3-5 circles vigorously, and the anti-loosening capability of the composite nut is superior to that of the existing nut in the market.
Compared with other existing self-locking nuts, the composite nut only needs to be screwed in once, and the Hard Lock nut needs to be screwed in two nuts; compared with the other anti-loosening nut with the gasket, once the gasket is loosened by external force, the anti-loosening effect of the nut is completely lost.
Claims (4)
1. An automatic locking anti-loosening composite nut, comprising: the composite nut body, the composite nut's body constitute its characterized in that by overcoat and interior nut: the length of the outer sleeve is 3-5 mm greater than the total length of the inner nut, and the length of the outer sleeve is in direct proportion to the increase of the specification and the model of the nut; the outer sleeve is of a hollow hexagonal structure, the interior of the outer sleeve is sequentially divided into two intervals from top to bottom, the two intervals are separated by a step surface, and an inner hexagon is arranged above the step surface and is in clearance fit with the inner nut; the lower part of the step surface is a reverse taper with a big upper part and a small lower part.
2. The automatic locking anti-loosening composite nut as claimed in claim 1, wherein: the upper half part of the inner nut is of a hexagonal structure of a common nut, the lower half part of the inner nut is of an inverted cone with a large upper part and a small lower part, and symmetrical openings are formed in the inverted cone.
3. The automatic locking anti-loosening composite nut as claimed in claim 1 or 2, wherein: the upper half part and the lower half part of the inner nut are both provided with internal threads.
4. The automatic locking anti-loosening composite nut as claimed in claim 1, wherein: the height above the step surface is 0.5-1 mm greater than the height of the upper half part of the inner nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921154815.XU CN210739094U (en) | 2019-07-23 | 2019-07-23 | Automatic locking anti-loosening composite nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921154815.XU CN210739094U (en) | 2019-07-23 | 2019-07-23 | Automatic locking anti-loosening composite nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210739094U true CN210739094U (en) | 2020-06-12 |
Family
ID=70981272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921154815.XU Expired - Fee Related CN210739094U (en) | 2019-07-23 | 2019-07-23 | Automatic locking anti-loosening composite nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210739094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454488A (en) * | 2019-07-23 | 2019-11-15 | 瑞通机械张家口有限公司 | A kind of compound nut that automatically lock is anti-loosening |
-
2019
- 2019-07-23 CN CN201921154815.XU patent/CN210739094U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454488A (en) * | 2019-07-23 | 2019-11-15 | 瑞通机械张家口有限公司 | A kind of compound nut that automatically lock is anti-loosening |
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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 |
Granted publication date: 20200612 |