CN110345147B - Effective anti-loosening combined nut - Google Patents
Effective anti-loosening combined nut Download PDFInfo
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- CN110345147B CN110345147B CN201910642098.3A CN201910642098A CN110345147B CN 110345147 B CN110345147 B CN 110345147B CN 201910642098 A CN201910642098 A CN 201910642098A CN 110345147 B CN110345147 B CN 110345147B
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- nut
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- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/122—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts foreseen with mating surfaces inclined, i.e. not normal, to the bolt axis
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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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
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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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/36—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt with conical locking parts, which may be split, including use of separate rings co-operating therewith
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Forging (AREA)
Abstract
The invention provides an effective anti-loosening combined nut which comprises a first nut and a second nut which are meshed with each other; the first nut comprises a first body part, an outer cylindrical part and a diameter-variable part which are sequentially connected, and a continuous or discontinuous first bulge is arranged on the outer surface of the outer cylindrical part along the circumferential direction; the second nut comprises a second body part, a diameter-variable hole and a cylindrical hole are sequentially formed in one end, matched with the first nut, of the second body part, a second protrusion corresponding to the first protrusion is arranged on the inner surface of the cylindrical hole, and the second protrusion is circumferentially and continuously arranged or discontinuously arranged along the inner surface of the cylindrical hole. The effective anti-loosening combined nut has a simple structure and a good anti-loosening effect, and can never loosen under the environments of vibration, impact, variable load and the like.
Description
Technical Field
The invention belongs to the field of fasteners, and particularly relates to an effective anti-loosening combined nut.
Background
The fastener is a mechanical part which is used for fastening connection and has wide application, and various fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and the like. The purpose of the fastener is to fasten, and once the fastener loosens and falls off due to vibration, impact and the like, the device, machinery and the like can lose the functionality and the disassembly of the device, the machinery and the like, and even the personal safety is endangered. More than 80% of accidents of current mechanical equipment are caused by loosening of fasteners.
In order to avoid various problems caused by loosening of fasteners, technicians in various countries continuously research and develop methods for further improving product fastening, such as adding spring washers, pins, using double nuts and the like, products with loosening and vibration resisting effects, such as self-locking nuts, high-locking nuts and the like, are formed, but the risk of loosening still exists.
Disclosure of Invention
In view of this, the present invention provides an effective anti-loosening combination nut to solve the technical problem of the nut in the prior art that there is a risk of loosening.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an effective anti-loosening combination nut comprises a first nut and a second nut which are meshed with each other;
the first nut comprises a first body part, an outer cylindrical part and a variable diameter part which are sequentially connected, first threaded holes with the same specification and communicated are arranged in the first body part, the outer cylindrical part and the variable diameter part, and continuous or discontinuous first bulges are arranged on the outer surface of the outer cylindrical part along the circumferential direction;
the second nut comprises a second body part, a second threaded hole which is the same as the first threaded hole in specification and is communicated with a through hole in the variable diameter part is arranged in the second body part, a variable diameter hole and a cylindrical hole are sequentially arranged at one end, matched with the first nut, of the second body part, the variable diameter hole is in contact fit with the variable diameter part, the cylindrical hole is in contact fit with the outer cylindrical part, a second bulge corresponding to the first bulge position is arranged on the inner surface of the cylindrical hole, and the second bulge is circumferentially continuously or discontinuously arranged along the inner surface of the cylindrical hole.
Furthermore, the diameter-variable part is provided with a groove along the axial direction, and the bottom of the groove is communicated with a first threaded hole in the diameter-variable part.
Further, the bottom of the groove along the axial direction is in smooth transition.
Furthermore, a plurality of grooves are formed in the through hole of the diameter changing portion, and the grooves are evenly distributed on the inner surface of the through hole.
Further, the diameter-variable portion is a rotary body structure having a diameter gradually decreasing in a direction from the first nut toward the second nut.
Furthermore, the first bulges are divided into 2 sections or more than 2 sections and are evenly distributed along the circumferential direction of the outer surface of the outer cylindrical part, and the second bulges are continuously arranged along the circumferential direction of the inner surface of the cylindrical hole.
Furthermore, the first bulges are continuously arranged along the circumferential direction of the outer surface of the outer cylindrical part, and the second bulges are 2 sections or more than 2 sections and are uniformly distributed along the circumferential direction of the inner surface of the cylindrical hole.
Furthermore, the outer surfaces of the first nut and the second nut are both provided with wrenching structures.
Compared with the prior art, the effective anti-loosening combined nut has the following advantages:
the effective anti-loosening combined nut has a simple structure and a good anti-loosening effect, and can never loosen under the environments of vibration, impact, variable load and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a combination nut installation of the type described in the present invention;
FIGS. 2-3 are schematic views of a first nut of the type described herein;
FIGS. 4-5 are schematic views of a second nut of the type described in the present disclosure;
FIG. 6 is a schematic view of a dual combination nut installation of the type described in the present invention;
FIG. 7 is a schematic structural view of a second form of the first nut of the present invention;
FIG. 8 is a schematic view of a triple combination nut installation of the type described in the present invention;
fig. 9 is a schematic structural view of a third form of the first nut of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides an effective anti-loosening combined nut, which comprises a first nut 1 and a second nut 2 which are meshed with each other;
the first nut 1 comprises a first body part 10, an outer cylindrical part 15 and a variable diameter part 13 which are connected in sequence, wherein first threaded holes 11 which are identical in specification and communicated with each other are formed in the first body part 10, the outer cylindrical part 15 and the variable diameter part 13, internal threads in the threaded holes 11 can be full threads, but are not limited to the full threads, only the length of threads required by locking needs to be ensured, and continuous or discontinuous first protrusions 14 are formed in the outer surface of the outer cylindrical part 15 along the circumferential direction. The external surface of the first nut 1 is provided with a wrenching structure 17, and the wrenching structure 17 may be in a hexagonal form, but is not limited to the hexagonal form, as long as a wrenching effect can be achieved.
Specifically, the outer surface of the diameter-variable portion 13 is provided with a groove 12, the bottom of which is communicated with the first threaded hole 11 in the diameter-variable portion 13 along the axial direction, the groove 12 is provided along the axial direction of the first nut 1, the axial bottom of the groove 12 is in smooth transition, and when the number of the grooves 12 is multiple, the grooves 12 are uniformly distributed in the diameter-variable portion 13. The diameter-variable portion 13 is a solid of revolution structure, such as, but not limited to, a cone, whose diameter is gradually reduced in a direction from the first nut 1 to the second nut 2.
The second nut 2 comprises a second body part 26, a second threaded hole 22 which is the same as the first threaded hole 11 in specification and communicated with the first threaded hole 11 is arranged in the second body part 26, a reducing hole 23 and a cylindrical hole 24 are sequentially arranged at one end, matched with the first nut 1, of the second body part 26, the reducing hole 23 is in contact fit with the reducing part 13, the cylindrical hole 24 is in contact fit with the outer cylindrical part 15, a second bulge 25 corresponding to the first bulge 14 is arranged on the inner surface of the cylindrical hole 24, and the second bulge 25 is circumferentially continuously or discontinuously arranged along the inner surface of the cylindrical hole 24. The wrenching structures 21 are arranged on the outer surfaces of the second nuts 2, and the wrenching structures 21 can be in a hexagonal form, are not limited to the hexagonal form, and only need to realize wrenching.
Specifically, the diameter-variable hole 23 is not limited to a tapered shape, and may be any structure that can achieve the effect of press-deforming the diameter-variable structure of the split nut 1.
The first protrusions 14 may be continuously arranged along the circumferential direction of the outer surface of the outer cylindrical portion 15, that is, a whole section of circumference, or may be divided into 2 sections or more than 2 sections, and are uniformly distributed along the circumferential direction of the outer surface of the outer cylindrical portion 24. When the first protrusions 14 are continuously arranged along the circumferential direction of the outer cylindrical portion 15, the second protrusions 25 are 2 or more than 2 segments and are uniformly distributed along the circumferential direction of the inner surface of the cylindrical hole 24. When the first protrusions 14 are arranged in multiple segments, the second protrusions 25 are circumferentially and continuously arranged along the inner surface of the cylindrical hole 24, i.e. a whole segment of circumference.
The invention exemplarily shows three different forms of combined nuts, and figures 1-5 show a combined nut of a first form, wherein the reducing part 13 of the first nut 1 is a conical rotary body, and the inner surface of the reducing hole 23 of the second nut 2 is a conical hole matched with the conical rotary body.
Fig. 6-7 show a second form of the combined nut, the diameter-changing portion 13 of the first nut 1 is an arc-shaped revolving body, the longitudinal section of the first nut is arc-shaped, and the inner surface of the diameter-changing hole 23 of the second nut 2 is an arc-shaped hole matched with the arc-shaped revolving body.
Fig. 8-9 are three forms of combined nuts, the reducing portion 13 of the first nut 1 is a step-shaped revolving body, the longitudinal section of the first nut is step-shaped, and the inner surface of the reducing hole 23 of the second nut 2 is an arc-shaped hole matched with the step-shaped revolving body.
The installation process of the combined nut of the invention is as follows:
step 1: manually mounting the first nut 1 on the mating threaded element;
step 2: installing the first nut 1 in place using a wrenching tool;
and 3, step 3: manually mounting the second nut 2 on the mating screw until it is not screwed;
and 4, step 4: the second nut 2 is screwed using a wrenching tool until the second projection 25 clears the first projection 14 and the installation is complete.
In the use process, the reducing part 13 with the groove 12 of the first nut 1 is extruded to gather inwards through the reducing hole 23 in the second nut 2, so that the internal thread in the threaded hole 11 of the first nut 1 tightly embraces the external thread matched with the internal thread, and the locking effect is achieved. Meanwhile, the inner second protrusion 25 of the second nut 2 has been pressed by screwing interference over the first protrusion structure 14 on the outer cylindrical portion 15 in the first nut 1, so that the protrusion 14 of the first nut plays a role in preventing the second nut 2 from being loosened, thereby ensuring the reliability of the locking performance of the nut.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an effective locking combination nut that takes off which characterized in that: comprises a first nut and a second nut which are mutually meshed;
the first nut comprises a first body part, an outer cylindrical part and a variable diameter part which are sequentially connected, first threaded holes with the same specification and communicated are arranged in the first body part, the outer cylindrical part and the variable diameter part, and continuous or discontinuous first bulges are arranged on the outer surface of the outer cylindrical part along the circumferential direction;
the second nut comprises a second body part, a second threaded hole which has the same specification as the first threaded hole and is communicated with the through hole in the variable diameter part is arranged in the second body part, a variable diameter hole and a cylindrical hole are sequentially arranged at one end, matched with the first nut, of the second body part, the variable diameter hole is in contact fit with the variable diameter part, the cylindrical hole is in contact fit with the outer cylindrical part, a second bulge corresponding to the first bulge is arranged on the inner surface of the cylindrical hole, and the second bulge is circumferentially arranged continuously or discontinuously along the inner surface of the cylindrical hole;
the diameter-variable part is a revolving body structure with the diameter gradually reduced along the direction from the first nut to the second nut.
2. The effective anti-loosening combination nut as claimed in claim 1, wherein: the diameter-variable part is provided with a groove along the axial direction, and the bottom of the groove is communicated with a first threaded hole in the diameter-variable part.
3. The effective anti-loosening combination nut as claimed in claim 2, wherein: the bottom of the groove along the axial direction is in smooth transition.
4. The effective anti-loosening combination nut as claimed in claim 3, wherein: a plurality of grooves are formed in the through hole of the diameter-variable portion and are evenly distributed on the inner surface of the through hole.
5. The effective anti-loosening combination nut as claimed in claim 1, wherein: the first bulges are divided into 2 sections or more than 2 sections and are evenly distributed along the circumferential direction of the outer surface of the outer cylindrical part, and the second bulges are continuously arranged along the circumferential direction of the inner surface of the cylindrical hole.
6. The effective anti-loosening combination nut as claimed in claim 1, wherein: the first bulges are continuously arranged along the circumferential direction of the outer surface of the outer cylindrical part, and the second bulges are 2 sections or more than 2 sections and are uniformly distributed along the circumferential direction of the inner surface of the cylindrical hole.
7. The effective anti-loosening combination nut as claimed in claim 1, wherein: the outer surfaces of the first nut and the second nut are both provided with wrenching structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642098.3A CN110345147B (en) | 2019-07-16 | 2019-07-16 | Effective anti-loosening combined nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642098.3A CN110345147B (en) | 2019-07-16 | 2019-07-16 | Effective anti-loosening combined nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345147A CN110345147A (en) | 2019-10-18 |
| CN110345147B true CN110345147B (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910642098.3A Active CN110345147B (en) | 2019-07-16 | 2019-07-16 | Effective anti-loosening combined nut |
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| Country | Link |
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| CN (1) | CN110345147B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108360A (en) * | 1993-09-28 | 1995-09-13 | 蒋志忠 | Sectional loosening- proof screw nut |
| US6220801B1 (en) * | 1999-02-02 | 2001-04-24 | Chung-I Lin | Free-running-on, locking-off and tension directly indicated locking nut (frolo & TDI locking nut) |
| CN2760324Y (en) * | 2004-11-23 | 2006-02-22 | 陈光陶 | Improved fast-attaching screw cap structure |
| WO2012102401A1 (en) * | 2011-01-28 | 2012-08-02 | Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 | Female screw structure |
| CN106481636A (en) * | 2016-12-16 | 2017-03-08 | 彭志强 | A kind of Anti-loosening nut |
| CN107781276A (en) * | 2016-08-29 | 2018-03-09 | 天津市宇龙鑫金属制品有限公司 | A kind of anti-loosening threaded fastener attachment structure |
| CN108730313A (en) * | 2018-06-14 | 2018-11-02 | 荆门创佳机械科技有限公司 | Interlockable stop nut |
| CN108799304A (en) * | 2018-08-22 | 2018-11-13 | 董尊久 | A kind of Combined locknut |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100122548A (en) * | 2009-05-13 | 2010-11-23 | 오세갑 | Locking nut assembly |
-
2019
- 2019-07-16 CN CN201910642098.3A patent/CN110345147B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108360A (en) * | 1993-09-28 | 1995-09-13 | 蒋志忠 | Sectional loosening- proof screw nut |
| US6220801B1 (en) * | 1999-02-02 | 2001-04-24 | Chung-I Lin | Free-running-on, locking-off and tension directly indicated locking nut (frolo & TDI locking nut) |
| CN2760324Y (en) * | 2004-11-23 | 2006-02-22 | 陈光陶 | Improved fast-attaching screw cap structure |
| WO2012102401A1 (en) * | 2011-01-28 | 2012-08-02 | Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 | Female screw structure |
| CN107781276A (en) * | 2016-08-29 | 2018-03-09 | 天津市宇龙鑫金属制品有限公司 | A kind of anti-loosening threaded fastener attachment structure |
| CN106481636A (en) * | 2016-12-16 | 2017-03-08 | 彭志强 | A kind of Anti-loosening nut |
| CN108730313A (en) * | 2018-06-14 | 2018-11-02 | 荆门创佳机械科技有限公司 | Interlockable stop nut |
| CN108799304A (en) * | 2018-08-22 | 2018-11-13 | 董尊久 | A kind of Combined locknut |
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| Publication number | Publication date |
|---|---|
| CN110345147A (en) | 2019-10-18 |
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