CN113339385A - Airborne outfield replacement electronic equipment assembly-level anti-vibration self-locking nut - Google Patents
Airborne outfield replacement electronic equipment assembly-level anti-vibration self-locking nut Download PDFInfo
- Publication number
- CN113339385A CN113339385A CN202110483090.4A CN202110483090A CN113339385A CN 113339385 A CN113339385 A CN 113339385A CN 202110483090 A CN202110483090 A CN 202110483090A CN 113339385 A CN113339385 A CN 113339385A
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- Prior art keywords
- nut
- self
- locking nut
- airborne
- riveting
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- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000007306 turnover Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
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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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
- F16B37/065—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the nut
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses an airborne outfield replacement electronic equipment assembly-grade anti-vibration self-locking nut which is simple in structure, easy to install and maintain, reliable in locking performance and long in service life. The nut comprises a rivet turning nut with a rivet turning column and a stop washer assembled between a nut seat and a compression ring: the bottom conical hole of the compression ring is flanged through the top cone of the turned riveting column cylinder, the turned riveting is performed at the top end of the column cylinder to form a conical turned riveting, the turned riveting column cylinder cannot be separated from the turned riveting column cylinder, the turned riveting nut is meshed through the screw threads, the compression ring is pushed to slide along the turned riveting column cylinder, the stop washer is pressed on the nut seat of the turned riveting nut in a floating mode, and the turned riveting nut is screwed in until the self-locking nut is locked by the locking carrier. When the rivet turning nut is disassembled, the rivet turning nut is rotated anticlockwise and pulled out backwards, so that the fit between the rivet turning nut and the pressing ring is loosened, and the rivet turning nut and the pressing ring are loosened, and quick loosening and disassembling are realized.
Description
Technical Field
The invention relates to an assembly-level self-locking nut, in particular to a self-locking nut assembly for the field of airborne electronics.
Background
Currently, in on-board electronics and most modern machines, the number of fasteners accounts for about 60% of the total number of parts of the machine, with a threaded coupling being one of the most common forms used in mechanical couplings. However, in practical applications, the resulting product failure and machine failure are not uncommon. If the equipment loosens and slips in the flying process of the airplane, the consequences can not be imagined. In the failure environment factors of the airborne electronic equipment, the failure proportion of the airborne electronic equipment caused by the vibration factors is 27%, and the failure modes of the threaded connection of the airborne electronic equipment caused by the vibration can be divided into three types: fatigue failure of the screw, corrosion of the threaded coupling and loosening of the threaded coupling. Among them, the screw coupling applied to the field of airborne electronic equipment will loose the most important failure form because it works in harsh impact and vibration environment and the working temperature changes greatly. Under static load, the fastening thread connection can be self-locked, but under the condition of impact vibration, the friction torque for preventing the thread pair from loosening can be reduced sharply, so that a trace amount of relative sliding is generated between the thread pairs, and the connection is loosened. Thread loosening is an extremely complex and widely involved problem, and for a particular threaded coupling arrangement, the loosening may be varied, and thus loosening prevention is extremely difficult.
In the field of airborne electronics, the nut is prevented from loosening mainly by adding a standard elastic cushion and a standard flat cushion and applying a certain pretightening force, but most of the specifications of fasteners in the field of airborne electronics are smaller, for example, the specifications of the fasteners are small specifications such as M2, M2.5, M3 and the like, so that the standard elastic cushion and the standard flat cushion are easy to fall off in a machine body when electronic equipment is replaced in an airborne outfield in the loosening prevention mode, so that redundant objects appear, and potential safety hazards are caused. Another common method is to glue the electronic device to prevent the electronic device from loosening, which may cause the electronic device to be replaced with a complicated operation. Another common way is to use a self-locking nut of a locking deformation type, which performs self-locking by increasing the friction between the nut and the bolt by extruding threads, but has a limited service life, and the reduction of the locking performance is caused every time the nut is used.
Disclosure of Invention
The invention aims to overcome the defects of the common nut in the field of the existing airborne electronics, provides an airborne outfield replacement electronic equipment assembly-grade anti-vibration self-locking nut which faces to severe vibration conditions and is rapidly disassembled and assembled, and has the advantages of simple structure, easy installation and maintenance, reliable locking performance and long service life.
The above object of the present invention can be achieved by providing an anti-vibration self-locking nut for replacing an electronic device module in an airborne outfield, comprising a clinch nut having a clinch post and a lock washer disposed between a nut seat and a clamp ring, wherein: the conical hole at the bottom of the compression ring 3 is turned over through the cone at the top end of the turned riveting column cylinder, the turned riveting column cylinder cannot be separated after the turned riveting is formed at the top end of the column cylinder, the turned riveting nut 1 is meshed through screw threads, the compression ring 3 is pushed to slide along the turned riveting column cylinder, the stop washer 2 is pressed on a nut seat of the turned riveting nut 1 in a floating mode, and the turned riveting nut is screwed in until the self-locking nut is locked by a locking carrier.
Compared with the prior art, the invention has the following beneficial effects:
the self-locking nut assembly is composed of the rivet turning nut with the rivet turning column cylinder and the stop washer assembled between the nut seat and the compression ring, is simple in structure and easy to install and maintain, and can quickly realize locking and looseness prevention of the nut. When the device is used, the rivet turning nut is screwed clockwise, the conical binding surface of the rivet turning nut is tightly leaned with the conical hole at the bottom of the compression ring through the conical flanging at the top end of the rivet turning cylinder, the rivet turning nut is riveted at the top end of the cylinder to form a conical rivet turning and cannot be separated from the rivet turning cylinder, and the stop washer is mutually occluded through the column teeth of the rivet turning cylinder, so that the rivet turning nut is automatically locked after being in place, and the stop nut is almost guaranteed to rotate to any position and can be self-locked without being separated.
When the turnover riveting nut is disassembled, the turnover riveting nut is rotated anticlockwise and pulled out backwards, so that the joint of the turnover riveting nut and the pressing ring is loosened from tight to loose, the turnover riveting nut and the pressing ring are loosened, quick loose disassembly is realized, the turnover riveting nut is easy to replace in an onboard outfield, and the turnover riveting nut has long service life.
The invention is suitable for the fields of machinery equipment with high-frequency vibration or engineering needing high-frequency vibration, such as aviation, and the like, in particular to the component-level self-locking nuts on various airborne electronic devices of different aircraft platforms.
Drawings
The invention is described in further detail below with reference to the accompanying drawings:
FIG. 1 is a cross-sectional view of an airborne outfield replacement electronic device assembly level anti-vibration self-locking nut of the present invention;
FIG. 2 is an exploded schematic view of FIG. 1;
FIG. 3 is a schematic structural view of a clinch nut of the present invention;
FIG. 4 is a schematic view of a hold-down ring structure of the present invention;
fig. 5 is a schematic diagram of an embodiment of the present invention.
In the figure: 1 rivet nut turns over, 2 lock washers, 3 clamp rings, 4 lock nut assemblies, 5 electronic equipment carriers, 6 fastening platforms, 7 screws, 11: turning over the riveting nut body; 12: turning and riveting a hollow boss of the nut; 13, turning and riveting the screw thread of the nut body; 14, turning over the riveting columns; 31, pressing ring small counter bore; 32, pressing ring counter bore transition surface; 33, pressing ring big counter bore; 34: the end face is fixed by the compression ring; 35: the outer diameter of the clamp ring.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
Detailed Description
In the preferred embodiment described below, an on-board field replacement electronics package level anti-vibration self-locking nut, as shown in fig. 1-2, has a clinch nut 1 with a clinch cylinder and a retaining washer 2 fitted between the nut seat of the clinch nut 1 and a clamp ring 3. The conical hole at the bottom of the compression ring 3 is flanged through the cone at the top end of the turned riveting column cylinder, the turned riveting column cylinder cannot be separated after the turned riveting is formed at the top end of the column cylinder, the turned riveting nut 1 is meshed through screw threads, the compression ring 3 is pushed to slide along the turned riveting column cylinder, the stop washer 2 is pressed on a nut seat of the turned riveting nut 1 in a floating mode, and the turned riveting nut 1 is screwed in until the self-locking nut is locked by a lock carrier.
See fig. 3. The upper end face of the nut seat 11 is provided with a hollow turned riveting column barrel 12 formed around the thread axis of the nut seat, and the turned riveting column barrel 12 is downwards connected with a stepped hole through a conical surface transition body of a hollow stepped hole 14.
The clamp ring 3 and the rivet turning nut 1 form a self-locking nut assembly through the stop washer 2, the clamp ring 3 is provided with a counter bore, the transition surface of the counter bore is a conical surface, and the diameter of the small end of the counter bore is larger than the outer diameter of the rivet turning column barrel 12 of the rivet turning nut 1.
The contact surface of the stop washer 2 and the rivet turning cylinder 12 is provided with circular array sawtooth type notches or corrugated type notches for increasing friction force.
See fig. 4. The central lines of the turn-riveting nut body threads 13 and the hollow turn-riveting column barrel 12 on the turn-riveting nut body threads are the same axis O. After the self-locking nut assembly is turned and riveted, the aperture of a counter bore 33 of the opening face of the compression ring 3 is larger than the maximum outer diameter of the turned and riveted rivet column 12. The micro-floating rivet nut 1 cannot be separated.
When the self-locking nut assembly is used, one end face 34 of the compression ring of the self-locking nut assembly is in contact with a carrier to be fastened.
The length value of the turn-riveting nut body thread 13 is less than the sum of the heights of the nut seat 11 and the turn-riveting column 12.
See fig. 5. The clamp ring 3 and the rivet turning nut 1 form a self-locking nut assembly through the stop washer 2. The self-locking nut component 4 is matched with the screw 7 to fix and lock the electronic equipment carrier 5 and the fastening body 6.
It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures can be arranged and designed in a wide variety of different configurations. All structural changes and equivalents made by using the contents of the specification and the drawings of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an airborne outfield changes electronic equipment subassembly level anti vibration self-locking nut, has one and has turns over rivet nut (1) of riveting post and the lock washer of assembly between nut seat (11) and clamp ring, its characterized in that: the bottom conical hole of the clamp ring (3) is flanged through a cone at the top end of the rivet turning cylinder, the rivet turning cylinder cannot be separated after the top end of the cylinder is riveted to form a cone rivet turning, the rivet turning nut (1) is meshed through screw threads, the clamp ring (3) is pushed to slide along the rivet turning cylinder (12), the stop washer (2) is pressed on a nut seat of the rivet turning nut (1) in a floating mode, and the rivet turning nut (1) is screwed in until the self-locking nut is locked by a lock carrier.
2. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the upper end face of the nut seat (11) is provided with a hollow turned riveting column barrel (12) formed around the thread axis of the nut seat, and the turned riveting column barrel (12) is downwards connected with a stepped hole through a conical surface transition body of a hollow stepped hole (14).
3. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the clamp ring (3) is provided with a counter bore, the transition surface of the counter bore is a conical surface, and the diameter of the small end of the counter bore is larger than the outer diameter of the rivet turning column barrel (12) of the rivet turning nut (1).
4. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the contact surface of the stop washer (2) and the rivet turning cylinder (12) is provided with a circular array sawtooth type notch or a ripple type notch which can increase the friction force.
5. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the central lines of the turn-riveting nut body threads (13) and the hollow turn-riveting column barrel (12) on the turn-riveting nut body threads are the same axis O.
6. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the length value of the turn-riveting nut body thread (13) is less than the sum of the heights of the nut seat (11) and the turn-riveting column (12).
7. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: when the self-locking nut component is used, the upper side end face (34) of the compression ring (3) of the self-locking nut component is contacted with a carrier needing to be fastened.
8. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: after the self-locking nut assembly is turned and riveted, the aperture of a counter bore (33) on the opening surface of the clamp ring (3) is larger than the maximum outer diameter of the turned and riveted rivet column (12) after the turned and riveted, and the self-locking nut assembly floats slightly and cannot be separated from the turned and riveted nut (1).
9. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the clamp ring 3 and the rivet turning nut 1 form a self-locking nut assembly (4) through a stop washer (2).
10. The airborne outfield replacement electronic device assembly grade anti-vibration self-locking nut of claim 1, wherein: the self-locking nut component (4) is matched with the screw (7) to fix the electronic equipment carrier (5) and the fastening body (6) and lock and prevent looseness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110483090.4A CN113339385A (en) | 2021-04-30 | 2021-04-30 | Airborne outfield replacement electronic equipment assembly-level anti-vibration self-locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110483090.4A CN113339385A (en) | 2021-04-30 | 2021-04-30 | Airborne outfield replacement electronic equipment assembly-level anti-vibration self-locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339385A true CN113339385A (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110483090.4A Pending CN113339385A (en) | 2021-04-30 | 2021-04-30 | Airborne outfield replacement electronic equipment assembly-level anti-vibration self-locking nut |
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|---|---|
| CN (1) | CN113339385A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202348913U (en) * | 2011-10-28 | 2012-07-25 | 贵州航天精工制造有限公司 | Self-locking type rollover rivet nut |
| CN102628474A (en) * | 2012-04-23 | 2012-08-08 | 苏州工业园区新凯精密五金有限公司 | Combined self-locking nut |
| JP2013249850A (en) * | 2012-05-30 | 2013-12-12 | Nippon Pop Rivets & Fasteners Ltd | Blind rivet and method of fastening the same |
| CN105179434A (en) * | 2015-07-27 | 2015-12-23 | 泉州力泰汽车配件制造有限公司 | Elastic anti-knock anti-loose nut |
| CN207814176U (en) * | 2017-12-27 | 2018-09-04 | 朗福紧固科技（西安）有限公司 | Combined nut |
| US20190234447A1 (en) * | 2018-01-30 | 2019-08-01 | Unitech Products Corp. | Two-piece anti-loosening nut assembly |
-
2021
- 2021-04-30 CN CN202110483090.4A patent/CN113339385A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202348913U (en) * | 2011-10-28 | 2012-07-25 | 贵州航天精工制造有限公司 | Self-locking type rollover rivet nut |
| CN102628474A (en) * | 2012-04-23 | 2012-08-08 | 苏州工业园区新凯精密五金有限公司 | Combined self-locking nut |
| JP2013249850A (en) * | 2012-05-30 | 2013-12-12 | Nippon Pop Rivets & Fasteners Ltd | Blind rivet and method of fastening the same |
| CN105179434A (en) * | 2015-07-27 | 2015-12-23 | 泉州力泰汽车配件制造有限公司 | Elastic anti-knock anti-loose nut |
| CN207814176U (en) * | 2017-12-27 | 2018-09-04 | 朗福紧固科技（西安）有限公司 | Combined nut |
| US20190234447A1 (en) * | 2018-01-30 | 2019-08-01 | Unitech Products Corp. | Two-piece anti-loosening nut assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210903 |