CN211666981U - Self-tightening screw-free nut - Google Patents
Self-tightening screw-free nut Download PDFInfo
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- CN211666981U CN211666981U CN202020329900.1U CN202020329900U CN211666981U CN 211666981 U CN211666981 U CN 211666981U CN 202020329900 U CN202020329900 U CN 202020329900U CN 211666981 U CN211666981 U CN 211666981U
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Abstract
The utility model discloses a self-tightening screw-free nut, which consists of an outer nut, a middle nut, a clamping piece and a self-tightening nut; the inner side of the outer nut is provided with threads which are mutually screwed with the outer threads of the middle nut; the outer side of the middle nut is provided with threads which are mutually screwed with the inner threads of the outer nut, and the center of the middle nut is provided with a conical hole; the outer surface of the clamping piece is a conical surface, and the clamping piece can slide in the conical hole of the middle nut; the self-tightening nut is provided with threads on the outer side and screwed with the threads on the inner side of the outer nut, the center of the self-tightening nut is provided with the hole, the self-tightening nut can be automatically screwed or unscrewed only by rotating the outer nut, the screw opening is not needed, the cost is saved, and the working efficiency is improved.
Description
Technical Field
The utility model relates to a nut, more specifically say, relate to from the tight silk nut of exempting from.
Background
At present, when a screw is connected with a nut, the screw needs to be threaded, a large amount of time and cost are consumed, and the screw cannot be used frequently due to the problems of rusting, tooth sliding, loosening and the like of threads; when the connection is performed by adopting the modes of extruding the sleeve and the like, the fastening step is complicated to operate, and the advantages are not obvious. The utility model discloses exempt from the silk nut from to tighten does not need to open the silk on parts such as the screw rod that connect, reinforcing bar, pipeline, as long as rotatory outer nut just can accomplish automatically and screw up or unscrew, can be used for part fastening or butt joint such as screw rod, reinforcing bar, pipeline.
Disclosure of Invention
In order to overcome the deficiency of the background art, the utility model discloses self-tightening exempts from the silk nut and has following advantage: the screwing and unscrewing can be automatically completed only by rotating the outer nut without opening the screw, so that the cost is saved, and the working efficiency is improved.
The technical scheme of the utility model, include: the outer nut, the middle nut, the clamping piece and the self-tightening nut; the inner side of the outer nut is provided with threads which are mutually screwed with the outer threads of the middle nut; the outer side of the middle nut is provided with threads which are mutually screwed with the inner threads of the outer nut, and the center of the middle nut is provided with a conical hole; the outer surface of the clamping piece is a conical surface, and the clamping piece can slide in the conical hole of the middle nut; the outer side of the self-tightening nut is provided with threads which are mutually screwed with the threads on the inner side of the outer nut, and the center of the self-tightening nut is provided with a hole.
The automatic tightening method of the self-tightening screw-free nut comprises the following steps:
1) the screw rod is inserted from the middle of the clamping piece;
2) rotating the outer nut;
3) the middle nut rotates relative to the outer nut;
4) the middle nut drives the clamping piece to be close to the self-tightening nut;
5) the clamping piece is tightly propped against the self-tightening nut and drives the self-tightening nut to rotate until the outer nut is fastened with the connected part and then stops rotating.
The automatic unscrewing method of the self-tightening screw-free nut comprises the following steps:
1) rotating the outer nut;
2) the middle nut rotates relative to the outer nut;
3) the middle nut drives the clamping piece to be far away from the self-tightening nut;
4) the clip slides relative to the central nut, loosening the clamped screw.
One end of the outer nut is provided with an outer nut limiting flange which limits the rotation of the self-tightening nut or the middle nut in the range of the inner side of the outer nut limiting flange; the conical hole in the center of the middle nut is provided with a middle nut limiting flange which limits the clamping piece not to rotate relative to the middle nut.
A spring or washer is mounted between the clip and the clinch nut.
The inner side surface of the clamping piece is provided with concave-convex grains, so that the friction force and the occlusion force between the clamping piece and the screw rod are enhanced.
The intermediate nut and the clip may be a plurality of nuts connected in series.
The number of the clamping pieces is 2 to 7.
The self-tightening nut is fixed on the outer nut, and the self-tightening nut and the outer nut cannot rotate.
The two self-tightening screw-free nuts are symmetrically connected together to be used as a nut and a connecting sleeve; the middle nut and the clamping piece are mutually tightly propped, and can replace a self-tightening nut.
The central hole of the self-tightening nut is hexagonal, or one end of the outer side of the self-tightening nut is hexagonal, so that the self-tightening nut is convenient to rotate and install by using a tool.
Through the technical scheme, the utility model discloses technical scheme's beneficial effect is: the screwing and unscrewing can be automatically completed only by rotating the outer nut without opening the screw, so that the cost is saved, and the working efficiency is improved.
Drawings
For a clearer explanation of the present invention, the following description will be made with reference to a schematic drawing of a self-tightening wire-free nut, and the following drawings are merely examples of the present invention, and it will be obvious to those skilled in the art that other drawings can be obtained according to the provided drawings without any inventive work.
FIG. 1 is a schematic cross-sectional view of a self-tightening wire-free nut:
the nut comprises an outer nut 1, a middle nut 2, a clamping piece 3, a self-tightening nut 4 and an outer nut limiting flange 11.
FIG. 2 is an exploded view of the self-tightening, wire-free nut:
the nut comprises an outer nut 1, a middle nut 2, a clamping piece 3, a self-tightening nut 4 and a middle nut limiting flange 21.
FIG. 3 is a schematic view of the assembly of the self-tightening, wire-free nut:
the nut comprises an outer nut 1, an intermediate nut 2, a clamping piece 3 and a self-tightening nut 4.
Fig. 4 shows the butt joint intention of the self-tightening screw-free nut:
an outer nut 1.
Detailed Description
Embodiment 1, as shown in fig. 1 and 2 the present invention provides a self-tightening, wire-free nut, comprising: the self-tightening nut comprises an outer nut 1, a middle nut 2, a clamping piece 3 and a self-tightening nut 4; the inner side of the outer nut 1 is provided with threads which are mutually screwed with the outer threads of the middle nut 2; the outer side of the middle nut 2 is provided with threads which are mutually screwed with the inner threads of the outer nut 1, and the center of the middle nut 2 is provided with a conical hole; the outer surface of the clamping piece 3 is a conical surface, and the clamping piece 3 can slide in the conical hole of the middle nut 2; the outer side of the self-tightening nut 4 is provided with threads which are mutually screwed with the threads on the inner side of the outer nut 1, and the center of the self-tightening nut 4 is provided with a hole.
1) the screw rod is inserted from the middle of the clamping piece 3;
2) rotating the outer nut 1;
3) the middle nut 2 rotates relative to the outer nut 1;
4) the middle nut 2 drives the clamping piece 3 to approach the self-tightening nut 4;
5) the clamping piece 3 is tightly propped against the self-tightening nut 4 and drives the self-tightening nut 4 to rotate until the outer nut 1 fastens the connected part and then stops rotating.
1) rotating the outer nut 1;
2) the middle nut 2 rotates relative to the outer nut 1;
3) the middle nut 2 drives the clamping piece 3 to be far away from the self-tightening nut 4;
4) the jaws 3 slide relative to the central nut 2, releasing the clamped screw.
Example 5 a self-tightening, wire free nut of the present invention, as shown in fig. 1, has a spring or washer between the clip 3 and the self-tightening nut 4.
Embodiment 6, as shown in fig. 2, the utility model discloses screw nut is exempted from to self-tightening, and the inboard surface of clamping piece 3 has the raised grain, strengthens frictional force and bite-force between clamping piece 3 and the screw rod.
Example 7, as shown in fig. 1, the present invention provides a self-tightening wire-free nut, the middle nut 2 and the clip 3 can be used in a plurality of series.
Example 8, as shown in fig. 2, the self-tightening screw-free nut of the present invention has 2 to 7 clamping pieces 3.
Example 9, as shown in fig. 1, the self-tightening screw-free nut of the present invention is configured such that the self-tightening nut 4 is fixed to the outer nut 1 and is not rotatable between the self-tightening nut 4 and the outer nut 1.
Example 10, as shown in fig. 4, in the self-tightening screw-free nut of the present invention, two self-tightening screw-free nuts are symmetrically connected together to serve as a nut and a connecting sleeve; the middle nut 2 and the clamping piece 3 are mutually pressed tightly, and can replace the self-tightening nut 4.
Through the technical scheme, the utility model discloses technical scheme's beneficial effect is: the screwing and unscrewing can be automatically completed only by rotating the outer nut without opening the screw, so that the cost is saved, and the working efficiency is improved.
Any person skilled in the art can make modifications or modify equivalent embodiments according to the technical content disclosed above without departing from the technical solution of the present invention, but any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. From the tight silk nut of exempting from, its characterized in that includes: the self-tightening nut comprises an outer nut (1), a middle nut (2), a clamping piece (3) and a self-tightening nut (4); the inner side of the outer nut (1) is provided with threads which are mutually screwed with the outer threads of the middle nut (2); the outer side of the middle nut (2) is provided with threads which are mutually screwed with the inner threads of the outer nut (1), and the center of the middle nut (2) is provided with a conical hole; the outer surface of the clamping piece (3) is a conical surface, and the clamping piece (3) can slide in the conical hole of the middle nut (2); the outer side of the self-tightening nut (4) is provided with threads which are mutually screwed with the inner threads of the outer nut (1), and the center of the self-tightening nut (4) is provided with a hole.
2. The self-tightening screw-free nut according to claim 1, wherein the outer nut (1) has an outer nut limiting rib (11) at one end thereof, and the self-tightening nut (4) or the middle nut (2) is limited to rotate within the inner range of the outer nut limiting rib (11); the conical hole at the center of the middle nut (2) is provided with a middle nut limiting flange (21) which limits the clamping piece (3) from rotating relative to the middle nut (2).
3. Self-clinching wire-free nut of claim 1, wherein a spring or washer is interposed between the jaws (3) and the self-clinching nut (4).
4. The self-tightening screw-free nut as claimed in claim 1, wherein the inside surface of the clip (3) is provided with a relief to enhance the frictional force and the biting force between the clip (3) and the screw.
5. The self-clinching wire nut of claim 1, wherein the intermediate nut (2) and the clip (3) may be a plurality of ones connected in series.
6. Self-clinching wire nut of claim 1, wherein the number of jaws (3) is 2 to 7.
7. The self-tightening screw-free nut according to claim 1, wherein the self-tightening nut (4) is fixed to the outer nut (1) such that the self-tightening nut (4) and the outer nut (1) are not rotatable with respect to each other.
8. The self-clinching wire-free nut of claim 1, wherein two of the self-clinching wire-free nuts are symmetrically joined together to form the nut and the coupling sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020329900.1U CN211666981U (en) | 2020-03-17 | 2020-03-17 | Self-tightening screw-free nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020329900.1U CN211666981U (en) | 2020-03-17 | 2020-03-17 | Self-tightening screw-free nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211666981U true CN211666981U (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020329900.1U Active CN211666981U (en) | 2020-03-17 | 2020-03-17 | Self-tightening screw-free nut |
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| Country | Link |
|---|---|
| CN (1) | CN211666981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184602A1 (en) * | 2020-03-17 | 2021-09-23 | 莫崇规 | Self-tightening thread-free nut and automatic tightening and loosening method |
-
2020
- 2020-03-17 CN CN202020329900.1U patent/CN211666981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184602A1 (en) * | 2020-03-17 | 2021-09-23 | 莫崇规 | Self-tightening thread-free nut and automatic tightening and loosening method |
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