CN211423133U - Anti-loosening double-nut structure - Google Patents
Anti-loosening double-nut structure Download PDFInfo
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- CN211423133U CN211423133U CN201921520279.0U CN201921520279U CN211423133U CN 211423133 U CN211423133 U CN 211423133U CN 201921520279 U CN201921520279 U CN 201921520279U CN 211423133 U CN211423133 U CN 211423133U
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- 230000000694 effects Effects 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model discloses a locking double nut structure, including two nuts that set up side by side, two nuts are including matched with protruding nut and concave nut, one side of protruding nut is equipped with the boss, is equipped with the internal thread hole of protruding nut in the boss, one side of concave nut is equipped with the shrinkage pool that matches the extrusion boss with the boss. The concave-convex double nuts can eliminate the gaps between the threads, so that the frictional resistance is greatly enhanced, the frictional anti-loosening effect of the double nuts is improved, the double nuts are not easy to loosen and the locking is reliable; and the concave-convex double nuts are convenient to install and disassemble, simple in structure and low in cost.
Description
Technical Field
The utility model belongs to the technical field of two nut locking techniques and specifically relates to a locking two nut structures are related to.
Background
The thread friction anti-loosening is one of the most widely applied thread anti-loosening methods at present, and the anti-loosening effect is achieved by means of friction force between nut threads and screw threads. The two nuts are used for opposite-propping anti-loosening, namely opposite-propping double-nut anti-loosening is a common thread friction anti-loosening mode, and the anti-loosening device is a common thread anti-loosening measure in mechanical equipment due to rapid installation and convenient disassembly.
However, under severe conditions, such as when the locking device is subjected to impact, vibration or variable load, the locking effect on the top double nuts is not reliable. The reason for this loss of tightness is that the threads of the nut and the thread side of the screw are compressed by the reaction force of the base when the first nut is screwed into the screw, but this compression force is weakened or even eliminated as the second nut is screwed in. Therefore, the pretightening force of the double nuts is changed, the frictional resistance for preventing the loosening of the threads is possibly reduced or instantly disappears, and the threads are loosened due to the loss of self-locking, so that the looseness prevention of the opposite double nuts is unreliable.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to solve the technical problem that a locking double nut structure is provided to reach difficult not hard up, the reliable purpose of locking.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a locking double nut structure, includes two nuts that set up side by side, two nuts include matched with male nut and female nut, one side of male nut is equipped with the boss, is equipped with the internal thread hole of male nut in the boss, one side of female nut is equipped with the shrinkage pool that matches the extrusion boss with the boss.
Furthermore, the boss of the convex nut is a conical table, and the concave hole is a conical hole.
The convex nut comprises a convex nut body and a boss arranged on one side of the convex nut body, and a groove is formed between the convex nut body and the boss.
The boss of the convex nut is of an annular structure, and an opening is formed in the annular structure.
The length of the boss is the same as that of the concave hole.
The inner diameter of the concave hole is smaller than the outer diameter of the boss.
The openings are a pair which are oppositely arranged.
Compared with the prior art, the utility model, have following advantage:
the anti-loosening double nut has reasonable structural design, and the concave-convex double nuts can eliminate gaps between threads, so that the frictional resistance is greatly enhanced, the frictional anti-loosening effect of the double nuts is improved, and the anti-loosening double nuts are not easy to loosen and are reliable to lock; and the concave-convex double nuts are convenient to install and disassemble, simple in structure and low in cost.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is the structural schematic diagram of the double nuts of the present invention.
Fig. 2 is a schematic view of the use of the double nuts of the present invention.
In the figure:
1. convex nut, 2. boss, 3. opening, 4. shrinkage pool, 5. concave nut, 6. screw rod, 7. connector.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the double-nut locking structure comprises two nuts arranged side by side, the size of the internal thread holes of the two nuts are the same, the two nuts comprise a male nut 1 and a female nut 5 which are matched, a boss 2 is arranged on one side of the male nut, the internal thread hole of the male nut is arranged in the boss, and a concave hole 4 which is matched with the boss to extrude the boss is arranged on one side of the female nut 5.
The boss 2 of the convex nut 1 is a conical table, and the concave hole 4 is a conical hole. The concave-convex double nuts can eliminate the gaps between the threads, so that the frictional resistance is greatly enhanced, the frictional anti-loosening effect of the double nuts is improved, the double nuts are not easy to loosen and the locking is reliable; and the concave-convex double nuts are convenient to install and disassemble, simple in structure and low in cost.
The boss 2 of the convex nut 1 is of an annular structure, and an opening is formed in the annular structure. The conical table may also be two separate bosses disposed opposite each other. The boss of the male nut and the concave hole of the female nut are matched and mutually extruded, the opening gap is reduced in pressure, and the locking is reliable.
The convex nut 1 comprises a convex nut body and a boss arranged on one side of the convex nut body, the convex nut body and the boss are integrated, the appearance of the convex nut body can be standard nut appearance, such as hexagon and the like, a groove is arranged between the convex nut body and the boss, and the groove is an annular groove; the length of the boss is the same as that of the concave hole. When the two nuts are locked side by side, a gap is formed between the concave nut and the convex nut body, and the locking is not easy to loose.
Preferably, the boss of the male nut 1 is of an annular structure, the annular structure is provided with an opening 3, and the openings are a pair of opposite openings; the internal diameter of shrinkage pool is less than the external diameter of boss, and is preferred, and the internal diameter of shrinkage pool slightly is less than the external diameter of boss, and the minimum internal diameter of shrinkage pool is 0.95 ~ 0.99 times of the minimum external diameter of boss. The concave surface of shrinkage pool compresses tightly each other with the convex surface of boss, and the effect of the pressure power that the concave-convex face produced is received owing to being equipped with the opening to the protruding nut boss part, and the screw thread of protruding nut promptly and screw rod thread clearance eliminate.
The use method of the anti-loose double-nut structure comprises the following steps:
firstly, the convex nut is arranged on the screw rod and is tightly pressed with the connected piece 7, and the boss faces outwards; (ii) a
Then the female nut is arranged on the screw rod, and the concave hole of the female nut is matched with the boss of the male nut inwards;
along with the screw in gradually of female nut, the concave surface of shrinkage pool compresses tightly each other with the convex surface of boss, and the effect of the pressure power that the convex nut boss part received concave-convex face to produce is back owing to be equipped with the opening, and the screw thread of convex nut promptly and screw rod screw thread clearance eliminate, can produce very big frictional force after the laminating is inseparable between the screw thread to realize reliable friction locking effect.
The above-mentioned is only for the description of the preferred embodiments of the present invention, and the above-mentioned technical features can be combined at will to form a plurality of embodiments of the present invention.
The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.
Claims (1)
1. The utility model provides a locking double nut structure, includes two nuts that set up side by side, its characterized in that: the two nuts comprise a convex nut and a concave nut which are matched with each other, a boss is arranged on one side of the convex nut, an internal thread hole of the convex nut is formed in the boss, and a concave hole which is matched with the boss and used for extruding the boss is formed in one side of the concave nut; the boss of the convex nut is a conical table, and the concave hole is a conical hole; or the conical table can also be two independent bosses which are oppositely arranged; the convex nut comprises a convex nut body and a boss arranged on one side of the convex nut body, and a groove is formed between the convex nut body and the boss; the boss of the convex nut is of an annular structure, and an opening is formed in the annular structure; the length of the boss is the same as that of the concave hole; the inner diameter of the concave hole is smaller than the outer diameter of the boss; the openings are a pair which are oppositely arranged; the minimum inner diameter of the concave hole is 0.95-0.99 times of the minimum outer diameter of the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921520279.0U CN211423133U (en) | 2019-09-12 | 2019-09-12 | Anti-loosening double-nut structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921520279.0U CN211423133U (en) | 2019-09-12 | 2019-09-12 | Anti-loosening double-nut structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211423133U true CN211423133U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921520279.0U Active CN211423133U (en) | 2019-09-12 | 2019-09-12 | Anti-loosening double-nut structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211423133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529486A (en) * | 2019-09-12 | 2019-12-03 | 新余钢铁股份有限公司 | A kind of blocking double nut structure and its application method |
-
2019
- 2019-09-12 CN CN201921520279.0U patent/CN211423133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529486A (en) * | 2019-09-12 | 2019-12-03 | 新余钢铁股份有限公司 | A kind of blocking double nut structure and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240126 Address after: 338000 Metallurgical Road, Xinyu City, Jiangxi Province Patentee after: XINYU IRON & STEEL Co.,Ltd. Country or region after: China Address before: 338000 tiejiao Road, Xinyu City, Jiangxi Province Patentee before: XINYU IRON & STEEL Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |