CN111120464A - Self-tightening screw-free nut and automatic screwing and unscrewing method - Google Patents
Self-tightening screw-free nut and automatic screwing and unscrewing method Download PDFInfo
- Publication number
- CN111120464A CN111120464A CN202010185006.6A CN202010185006A CN111120464A CN 111120464 A CN111120464 A CN 111120464A CN 202010185006 A CN202010185006 A CN 202010185006A CN 111120464 A CN111120464 A CN 111120464A
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- China
- Prior art keywords
- nut
- self
- tightening
- free
- clamping piece
- Prior art date
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- Pending
Links
- 238000000034 method Methods 0.000 title claims description 8
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/065—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using screw-thread elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The self-tightening screw-free nut comprises an outer nut, an intermediate nut, a clamping piece and a self-tightening nut, can automatically finish tightening or loosening by only rotating the outer nut, does not need to open a screw, saves the cost and improves the working efficiency.
Description
Technical Field
The present invention relates to nuts and, more particularly, to self-tightening, wire-free nuts.
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 self-tightening screw-free nut disclosed by the invention can automatically complete screwing or unscrewing without screwing the screw, the steel bar, the pipeline and other parts connected with the nut, and can be used for fastening or butting the screw, the steel bar, the pipeline and other parts.
Disclosure of Invention
In order to overcome the defects of the background art, the self-tightening screw-free nut has the following advantages: 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 invention comprises the following steps: 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 self-tightening nut to rotate 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 serve as a butt joint connecting nut and a connecting sleeve.
The central hole 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 technical scheme of the invention has the beneficial effects that: 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 invention, reference will be made below to a schematic drawing of a self-tightening wire-free nut, the following figures being merely examples of the invention, and it will be apparent to those skilled in the art that other figures can be obtained from the provided figures without inventive effort.
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
Example 1 a self-tightening, wire-free nut of the present invention, as shown in fig. 1 and 2, comprises: 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.
Example 2, the method for automatically tightening a self-tightening, wire-less nut according to the present invention, as shown in fig. 1 and 3, comprises the steps of:
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-clinching wire free nut of the invention is shown in fig. 1 with a spring or washer positioned between the jaws 3 and the self-clinching nut 4.
In example 6, as shown in fig. 2, the screw-free self-tightening nut of the present invention has a concave-convex pattern on the inner surface of the clip 3 to enhance the friction and the biting force between the clip 3 and the screw.
Example 7, the intermediate nut 2 and clip 3 may be used in a plurality of tandem configurations as shown in fig. 1 for a self-tightening wire free nut of the present invention.
Example 8, the self-clinching wire free nut of the invention as shown in fig. 2 has 2 to 7 clips 3.
Example 9 the self-tightening screw-free nut of the present invention as shown in fig. 1, wherein the self-tightening nut 4 is fixed to the outer nut 1 so that the self-tightening nut 4 and the outer nut 1 are not rotatable with each other.
Example 10, as shown in fig. 4, two self-tightening wire-free nuts of the present invention are symmetrically connected together as a butt joint nut and a joint sleeve.
Through the technical scheme, the technical scheme of the invention has the beneficial effects that: 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.
Those skilled in the art can make modifications or changes to the equivalent embodiments according to the technical contents disclosed above without departing from the technical solutions of the present invention, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (10)
1. The invention discloses a self-tightening screw-free nut, which is characterized by 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 inner threads of the outer nut (1), and the center of the self-tightening nut (4) is provided with a hole.
2. The method of automatically tightening a self-clinching wire-free nut of claim 1, including the steps of:
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 parts and then stops rotating.
3. The method of automatically loosening a self-clinching wire-free nut of claim 1, including the steps of:
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 clamping piece (3) slides relative to the middle nut (2) to loosen the clamped screw.
4. 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) is limited to rotate within the range inside 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).
5. 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).
6. 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.
7. 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.
8. Self-clinching wire nut of claim 1, wherein the number of jaws (3) is 2 to 7.
9. 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.
10. The self-clinching wire-free nut of claim 1, wherein two self-clinching wire-free nuts are symmetrically joined together as a butt joint nut and a joint sleeve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010185006.6A CN111120464A (en) | 2020-03-17 | 2020-03-17 | Self-tightening screw-free nut and automatic screwing and unscrewing method |
| PCT/CN2020/101107 WO2021184602A1 (en) | 2020-03-17 | 2020-07-09 | Self-tightening thread-free nut and automatic tightening and loosening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010185006.6A CN111120464A (en) | 2020-03-17 | 2020-03-17 | Self-tightening screw-free nut and automatic screwing and unscrewing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111120464A true CN111120464A (en) | 2020-05-08 |
Family
ID=70493710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010185006.6A Pending CN111120464A (en) | 2020-03-17 | 2020-03-17 | Self-tightening screw-free nut and automatic screwing and unscrewing method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111120464A (en) |
| WO (1) | WO2021184602A1 (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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325342A (en) * | 1998-05-15 | 1999-11-26 | Ihara Science Corp | Fitting |
| CN101113798B (en) * | 2002-08-15 | 2010-08-25 | 徐长祥 | Squeezing connecting pipe joiner |
| CN201093138Y (en) * | 2007-08-08 | 2008-07-30 | 王平忠 | High-pressure rubber hose connector |
| CN104329520A (en) * | 2014-10-10 | 2015-02-04 | 洛阳中广石油化工机械设备有限公司 | Ferrule tube fitting |
| CN104588709A (en) * | 2014-11-24 | 2015-05-06 | 常州市永联管桩有限公司 | Tool chuck for preventing cylinder clamp from rotating |
| CN211666981U (en) * | 2020-03-17 | 2020-10-13 | 莫崇规 | Self-tightening screw-free nut |
| CN111120464A (en) * | 2020-03-17 | 2020-05-08 | 莫崇规 | Self-tightening screw-free nut and automatic screwing and unscrewing method |
-
2020
- 2020-03-17 CN CN202010185006.6A patent/CN111120464A/en active Pending
- 2020-07-09 WO PCT/CN2020/101107 patent/WO2021184602A1/en active Application Filing
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021184602A1 (en) | 2021-09-23 |
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