CN212744666U - Combined anti-loose sealing nut - Google Patents
Combined anti-loose sealing nut Download PDFInfo
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- CN212744666U CN212744666U CN202021686861.7U CN202021686861U CN212744666U CN 212744666 U CN212744666 U CN 212744666U CN 202021686861 U CN202021686861 U CN 202021686861U CN 212744666 U CN212744666 U CN 212744666U
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Abstract
The utility model relates to the technical field of nuts, and discloses a combined anti-loose sealing nut, which comprises a main nut, an auxiliary nut and a sealing ring, when the combined anti-loose sealing nut is connected and matched with a bolt, the internal thread and the sealing ring of the main nut are screwed with the bolt, the sealing ring can increase the friction force with the bolt so as to play a fastening effect on the bolt, then the auxiliary nut is connected with the first connecting step of the main nut through screw threads, in the screwing process of the auxiliary nut, the inner cone of the auxiliary nut applies a pressing force along the radial direction of the bolt on the outer cone surface of the sealing ring so as to further compress the sealing ring on the bolt, and the loosening is avoided, meanwhile, the sealing ring applies a reverse acting force on the auxiliary nut, thereby ensuring the connection stability between the auxiliary nut and the main nut as well as the sealing ring, thus, the main nut, the auxiliary nut, the sealing ring and the bolt are connected and fastened, thereby playing locking effect, improving the locking performance of nut and bolt.
Description
Technical Field
The utility model relates to a technical field of nut especially relates to a modular locking gland nut.
Background
Nuts are nuts that are screwed together with bolts or screws to function as fastening parts.
The working principle of the nut is that the nut and the bolt are self-locked by the friction force of threaded connection, but the reliability of the self-locking in dynamic load is reduced, and particularly in some important occasions, the connection tightness between workpieces is reduced by completely depending on the threaded self-locking between the nut and the bolt.
Disclosure of Invention
The utility model aims at providing a modular locking gland nut to it is relatively poor to solve current nut and rely on its reliability of the screw thread auto-lock of self, takes place not hard up problem easily.
In order to solve the problems, the utility model provides a combined anti-loosening sealing nut, which comprises a main nut, an auxiliary nut and a sealing ring, wherein the main nut is provided with a first internal thread, the auxiliary nut is provided with a second internal thread, the outer wall of the upper end of the main nut is provided with a first connecting step connected with the auxiliary nut, the first connecting step is provided with an external thread screwed with the second internal thread, the inner wall of the upper end of the main nut is provided with an internal annular groove and an annular protruding part, and the outer peripheral wall of the lower end of the sealing ring is respectively provided with a convex ring matched with the internal annular groove and an external annular groove matched with the protruding part;
the periphery wall of the upper end of the sealing ring is set to be an outer conical surface, and the inner wall of the auxiliary nut is provided with an inner conical surface matched with the outer conical surface.
Further, the section of the inner wall of the protruding part is circular arc.
Further, the section of the convex ring is square.
Further, the inner diameter of the seal ring is equal to the small diameter of the first internal thread.
Furthermore, the lower end of the auxiliary nut is provided with a second connecting step matched with the first connecting step, and the second internal thread is arranged on the inner wall of the second connecting step.
Further, when the auxiliary nut is connected with the main nut and the sealing ring, a cavity is formed between the second connecting step of the auxiliary nut and the main nut and between the second connecting step of the auxiliary nut and the sealing ring.
The utility model provides a combined anti-loose sealing nut, which comprises a sealing ring, a main nut with internal thread and an auxiliary nut, wherein, a convex ring and an outer ring groove at the lower end of the sealing ring are matched and connected with and fixed with an inner ring groove and a protruding part at the upper end of the main nut, thus, when the combined anti-loose sealing nut is connected and matched with a bolt, the internal thread and the sealing ring of the main nut are screwed with the bolt, the sealing ring can increase the friction force with the bolt so as to play a fastening effect on the bolt, then the auxiliary nut is connected with a first connecting step of the main nut by screw thread, in the screwing process of the auxiliary nut, the inner cone of the auxiliary nut applies a pressing force along the radial direction of the bolt to the outer cone surface of the sealing ring so as to further compress the sealing ring on the bolt, thereby avoiding loosening, meanwhile, the sealing ring applies a reverse acting force to the auxiliary nut, thereby ensuring the connection stability between the auxiliary nut, so for connect the fastening between main nut, vice nut, sealing washer and the bolt four, thereby play locking effect, improve the locking performance of nut and bolt.
Drawings
Fig. 1 is a schematic structural view of a combined anti-loose sealing nut in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the main nut in the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a seal ring in an embodiment of the present invention.
In the figure, 1, a main nut; 2. a secondary nut; 3. a seal ring; 101. a first connecting step; 102. an external thread; 103. an inner ring groove; 104. a protrusion; 105. a first internal thread; 201. an inner conical surface; 202. a second connecting step; 203. a cavity; 204. a second internal thread; 301. a convex ring; 302. an outer ring groove; 303. an outer conical surface.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
With reference to fig. 1 to 3, schematically showing a combined anti-loose sealing nut according to an embodiment of the present invention, a main nut 1, an auxiliary nut 2 and a sealing ring 3, wherein the main nut 1 is provided with a first internal thread 105, the auxiliary nut 2 is provided with a second internal thread 204, an outer wall of an upper end of the main nut 1 is provided with a first connecting step 101 connected with the auxiliary nut 2, the first connecting step 101 is provided with an external thread 102 screwed with the second internal thread 204, an inner wall of an upper end of the main nut 1 is provided with an inner annular groove 103 and an annular protrusion 104, and an outer peripheral wall of a lower end of the sealing ring 3 is respectively provided with a convex ring 301 matched with the inner annular groove 103 and an outer annular groove 302 matched with the protrusion 104; the periphery wall of the upper end of the sealing ring 3 is set to be an external conical surface 303, the inner wall of the auxiliary nut 2 is provided with an internal conical surface 201 matched with the external conical surface 303, wherein the sealing ring 3 plays a sealing role on one hand, and the friction force between the sealing ring 3 and the bolt can be increased on the other hand, so that a locking role is played.
Specifically, the convex ring 301 and the outer ring groove 302 at the lower end of the seal ring 3 are matched, connected and fixed with the inner ring groove 103 and the protruding part 104 at the upper end of the main nut 1, so that when the combined anti-loose seal nut is matched with the bolt, the inner thread of the main nut 1 and the seal ring 3 are both screwed with the bolt, the seal ring 3 can increase the friction force with the bolt to achieve the fastening effect on the bolt, then the auxiliary nut 2 is screwed with the first connecting step 101 of the main nut 1, during the screwing process of the auxiliary nut 2, the inner conical surface 201 of the auxiliary nut 2 applies the pressing force along the radial direction of the bolt to the outer conical surface 303 of the seal ring 3 to further press the seal ring 3 on the bolt to avoid loosening, meanwhile, the seal ring 3 applies the reverse acting force to the auxiliary nut 2 to ensure the connection stability between the auxiliary nut 2 and the main nut 1 and the seal ring 3, and thus, the main nut 1, the auxiliary nut 2, the sealing ring 3 and the bolt are connected and fastened, so that the anti-loosening effect is achieved, and the locking performance of the nut and the bolt is improved.
Preferably, the cross section of the inner wall of the protrusion 104 on the main nut 1 is arc-shaped, because the main nut 1 is made of rigid material, the seal ring 3 is made of flexible material, and the protrusion 104 is arc-shaped, the performance of the seal ring 3 can be prevented from being affected by the damage of the edge of the rigid protrusion 104 on the seal ring 3. In order to ensure the connection stability between the sealing ring 3 and the main nut 1, the section of the convex ring 301 is square to achieve a tight fit with the inner annular groove 103.
When the nut is matched with the bolt, the external thread 102 of the bolt can extrude an internal thread on the inner wall of the sealing ring 3 made of flexible materials in the screwing process so as to further increase the friction force between the sealing ring 3 and the bolt and ensure the connection stability.
Referring to fig. 1, the lower end of the sub-nut 2 is provided with a second connection step 202 engaged with the first connection step 101, and a second internal thread 204 of the sub-nut 2 is provided on an inner wall of the second connection step 202, so that when the sub-nut 2 is connected to the main nut 1, the first connection step 101 is engaged with the second connection step 202 to ensure the integrity of the combined nut. In this embodiment, when the auxiliary nut 2 is connected to the main nut 1 and the seal ring 3, a cavity 203 is formed between the second connecting step 202 of the auxiliary nut 2 and the main nut 1 and the seal ring 3, so that when the bolt is connected to the seal ring 3, the acting force of the bolt on the seal ring 3 can be offset by the deformation of the seal ring 3 to the cavity 203, thereby ensuring the performance of the seal ring 3 and avoiding the damage of the seal ring 3.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A combined type anti-loosening sealing nut is characterized by comprising a main nut, an auxiliary nut and a sealing ring, wherein the main nut is provided with a first internal thread, the auxiliary nut is provided with a second internal thread, the outer wall of the upper end of the main nut is provided with a first connecting step connected with the auxiliary nut, the first connecting step is provided with an external thread screwed with the second internal thread, the inner wall of the upper end of the main nut is provided with an internal ring groove and an annular protruding part, and the outer peripheral wall of the lower end of the sealing ring is respectively provided with a convex ring matched with the internal ring groove and an external ring groove matched with the protruding part;
the periphery wall of the upper end of the sealing ring is set to be an outer conical surface, and the inner wall of the auxiliary nut is provided with an inner conical surface matched with the outer conical surface.
2. The composite locknut of claim 1 wherein the cross-section of the inner wall of the protrusion is circular arc.
3. The composite locknut of claim 2 wherein the raised ring is square in cross-section.
4. The composite locknut of claim 3 wherein the seal ring has an inner diameter equal to the minor diameter of the first internal thread.
5. The combined type anti-loose sealing nut as claimed in claim 4, wherein the lower end of the sub-nut is provided with a second connection step engaged with the first connection step, and the second internal thread is provided on an inner wall of the second connection step.
6. The composite anti-loose sealing nut of claim 5, wherein when the secondary nut connects the main nut and the packing, a cavity is formed between the second connecting step of the secondary nut and the main nut and the packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021686861.7U CN212744666U (en) | 2020-08-14 | 2020-08-14 | Combined anti-loose sealing nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021686861.7U CN212744666U (en) | 2020-08-14 | 2020-08-14 | Combined anti-loose sealing nut |
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| Publication Number | Publication Date |
|---|---|
| CN212744666U true CN212744666U (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021686861.7U Active CN212744666U (en) | 2020-08-14 | 2020-08-14 | Combined anti-loose sealing nut |
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| Country | Link |
|---|---|
| CN (1) | CN212744666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688135A (en) * | 2022-04-19 | 2022-07-01 | 尹丹凤 | Interlocking spring clip locknut |
-
2020
- 2020-08-14 CN CN202021686861.7U patent/CN212744666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688135A (en) * | 2022-04-19 | 2022-07-01 | 尹丹凤 | Interlocking spring clip locknut |
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