CN207921095U - A kind of double nut reverse thread anti-loosing fixing device - Google Patents
A kind of double nut reverse thread anti-loosing fixing device Download PDFInfo
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- CN207921095U CN207921095U CN201820259883.1U CN201820259883U CN207921095U CN 207921095 U CN207921095 U CN 207921095U CN 201820259883 U CN201820259883 U CN 201820259883U CN 207921095 U CN207921095 U CN 207921095U
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- nut
- positioning pin
- fastening nut
- fastening
- stop
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Abstract
A kind of double nut reverse thread anti-loosing fixing device, it is characterized in that being made of forward and reverse two-flight screw, fastening nut and stop nut, fastening nut is close to fastenings, stop nut is close to fastening nut, the rotation direction of thread of fastening nut and stop nut is opposite, respectively left-hand nut and right-handed thread nut, left-hand nut and right-handed thread nut will form a mutual lock body by circular groove and movable positioning pin, it will finally realize Bidirectional locking, any loosening will not occur when encountering high vibration.Can efficiently solve railway, train, automobile and Other Engineering mechanized equipment because equipment constantly vibrate cause the common bolt device of fixed equipment to occur to loosen due to the equipment breakdown that causes, thus be conducive to the safety of raising vibratory equipment in use.
Description
Technical field
The present invention relates to a kind of Anti-loosening nut, more particularly to a kind of double nut reverse thread anti-loosing fixing device.
Background technology
Screw check is dynamic, is the serious problems of industry manufacture and industrial products all the time, even fatal hidden danger, and
The safety accident that this not timing occurs generates our daily life, work or even communications and transportation, national defense and military production
Uncertain harm.So various countries engineer, scientist are put to deep research for a long time at the dynamic aspect of screw check,
Earnestly hope and marks final solution.Screw connection is current most common connecting mode.It is threadedly coupled the excellent of more other connections
Point one of be that its is detachable, easy-maintaining, but this is also its weakness simultaneously, especially run at high speed, vibrate strong train,
In the heavy mechanical equipments such as automobile, aircraft and tank, because of the loosening of thread connection, loosen and fatigue fracture etc. due tos cause to overturn,
The malignant event of fatal crass is innumerable.As machinery is to high speed, precise treatment development, commercial scale is to extensive, automatic
Change development and the development etc. of aeronautical and space technology, the locking problem of threaded fastener connection also becomes more and more prominent.Generally
In the case of, the service life that fastener anti-vibration pine turns is more much lower than the fatigue life of other materials and structure, i.e., fastener is far away from tired
Just there is pine before labor fracture and has turned failure.Therefore, the anti-loosening problem of threaded connection is constantly thought deeply, always
It is the project that people endeavour research.
Chinese patent CN201155516Y discloses a kind of forward and reverse thread self locking type screw rod cap nut, by forward and reverse double thread
Screw rod, forward screw thread nut, reverse thread lock nut are constituted.The upper external screw thread of forward and reverse two-flight screw is divided into forward screw thread section
With reverse thread section, reverse thread section diameter is less than forward screw thread section and is in screw tip, as long as forward screw thread nut is prolonged
Screw rod forward screw thread section forward direction screws in fastening mechanical part, then reverse thread lock nut is prolonged screw rod reverse thread section and is reversely screwed in tightly
Positive pressure is to threaded screw.Since pressing face has the triangle tongue and groove uniformly distributed outward by the center of circle to match, forward screw thread spiral shell
The reversed loosening rotary force of cap will make reverse thread lock nut generate spinning force, be mutually twisted and do not loosen.Dismounting is reverse thread
The unique loosening force of lock nut is the rotary force for driving forward screw thread nut, reverse thread lock nut to be separated, suitably firmly i.e. removable
It unloads.This kind of structure can play the role of mechanical fasteners to a certain extent, but two nut pressing faces are by justifying in practice
The triangle tongue and groove that the heart uniformly distributes outward cannot achieve mutual cooperation, so can not achieve positive nut and reversed nut
Mutually locking function, under vibration forward and reverse nut can loosen in succession.
Invention content
Goal of the invention：The utility model, which mainly aims at, solves this above-mentioned technical problem, and a kind of double spiral shells proposed
Female reverse thread anti-loosing fixing device.
To achieve the goals above, the utility model uses the following technical solution：A kind of double nut reverse thread is anti-
Apparatus for fastening loosened, it is characterised in that be made of forward and reverse two-flight screw, fastening nut and stop nut, fastening nut is close
Fastenings, stop nut is close to fastening nut, and the rotation direction of thread of fastening nut and stop nut is on the contrary, fastening nut is
When right-handed thread, stop nut is left hand thread, and when fastening nut is left hand thread, stop nut is right-handed thread；Fasten spiral shell
It is female close to there are one the settings of the side of stop nut, two or more arc-shaped recessed grains, circular groove is from the side of fastening nut
From shallow to deep, the direction of rotation that direction of rotation from the superficial to the deep is screwed with stop nut is on the contrary, if it is two or more on surface
Then circular groove is distributed on same circle circular groove；Stop nut be first arranged close to fastening nut there are one, two
Or multiple blind holes, if it is two or more blind holes, then blind hole is distributed on same circle；The side of fastening nut and stop nut
Side contact when positioning pin can coordinate with circular groove；Determining of being moved along blind hole central shaft is provided in blind hole
Position pin, positioning pin are divided into two parts, and a part is the non-resilient end of positioning pin, is made of non-resilient material, and another part is positioning
Elastic tip is sold, is made of elastic material.The blind hole that is arranged on the circular groove and stop nut being arranged on fastening nut, positioning
Pin can be interchanged；Blind hole and positioning pin are set on fastening nut, circular groove is set on stop nut.Positioning pin elastic tip
It could alternatively be spring.The very section of positioning pin is round, ellipse or polygon.The combination of fastening nut and stop nut can
To replace with the combination of the fastener and bolt that are provided with screw hole；It is recessed in the fastener surface setting circular ring shape for being provided with screw hole
Slot, while blind hole, positioning pin are set in the nut inner side plane of bolt.
Advantageous effect：The present invention can efficiently solve railway, train, automobile and Other Engineering mechanized equipment because of equipment
Constantly vibration causes the common bolt device of fixed equipment to occur to loosen and the equipment breakdown of initiation, thus is conducive to improve
The safety of vibratory equipment in use.Instead of the anti-loosening method of the tradition such as various certificates, nylon nut, live dispensing,
The piece surface being fastenedly connected will not be damaged simultaneously.
Description of the drawings
Fig. 1 is a kind of vertical view 1 of double nut reverse thread anti-loosing fixing device；
Fig. 2 is a kind of vertical view 2 of double nut reverse thread anti-loosing fixing device；
Fig. 3 is a kind of perspective view 1 of double nut reverse thread anti-loosing fixing device；
Fig. 4 is a kind of perspective view 2 of double nut reverse thread anti-loosing fixing device；
Fig. 5 is a kind of stereogram 1 of double nut reverse thread anti-loosing fixing device；
Fig. 6 is a kind of stereogram 2 of double nut reverse thread anti-loosing fixing device；
Fig. 7 is a kind of perspective elevation of double nut reverse thread anti-loosing fixing device；
Fig. 8 is a kind of stereogram of double nut reverse thread anti-loosing fixing device；
In figure：1, fastening nut, 2, screw hole, 3, blind hole, 4, positioning pin, 5, circular groove, 6, circular groove shallow end,
7, circular groove deep end, 8, the non-resilient end of positioning pin, 9, positioning pin elastic tip, 10, stop nut.
Specific implementation mode：
Further explanation is done to the utility model below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of double nut reverse thread anti-loosing fixing device of the present invention, it is characterised in that by forward and reverse
Two-flight screw, fastening nut 1 and stop nut 10 are constituted, and fastening nut 1 is close to fastenings, and stop nut 10 is close to fastening
The rotation direction of thread of nut 1, fastening nut 1 and stop nut 10 is on the contrary, when fastening nut 1 is right-handed thread, stop nut
10 be left hand thread, and when fastening nut 1 is left hand thread, stop nut 10 is right-handed thread；Fastening nut 1 is close to stop nut
10 side setting there are one, two or more arc-shaped recessed poor 5, circular groove 5 from the side surface of fastening nut 1 by it is shallow to
Deeply, the direction of rotation that direction of rotation from the superficial to the deep is screwed with stop nut 10 is on the contrary, if it is two or more arc-shaped recessed
Then arc-shaped recessed 5 slot is distributed on same circle slot 5；Stop nut 10 be first arranged close to fastening nut 1 there are one, two or more
A blind hole 3, if it is two or more blind holes 3, then blind hole 3 is distributed on same circle；The side of fastening nut 1 and stop nut
Positioning pin 4 can coordinate with circular groove 5 when 10 side contact；Being provided in blind hole 3 can move along 3 central shaft of blind hole
Dynamic positioning pin 4, positioning pin 4 divide for two parts, and a part is the non-resilient end 8 of positioning pin, is made of non-resilient material, another portion
It is divided into positioning pin elastic tip 9, is made of elastic material.It is set on the circular groove 5 and stop nut 10 being arranged on fastening nut 1
The blind hole 3 set, positioning pin 4 can be interchanged；Blind hole 3 and positioning pin 4 are set on fastening nut 1, circle is set on stop nut 10
Arc groove 5.Positioning pin elastic tip 9 could alternatively be spring.The very section of positioning pin 4 is round, ellipse or polygon.Tightly
Gu the combination of nut 1 and stop nut 10 could alternatively be the combination of the fastener and bolt that are provided with screw hole；It is being provided with spiral shell
Toroidal cavity is arranged in the fastener surface in hole, while blind hole, positioning pin is arranged in the nut inner side plane of bolt.
The method of operation：When use by forward and reverse two-flight screw pass through connecting elements hole, first put on be provided with by it is shallow enter
The fastening nut of deep circular groove 5 is screwed, is fastened.Stop when fastening nut 1 reaches specified torque, puts at this time
Be provided with blind hole 3, positioning pin 4 stop nut 10, screwed, fastened.When stop nut is close to fastening nut 1, fastening
The contact surface of nut 1 can generate pressure to the positioning pin 4 of stop nut, and positioning pin 4 be compressed, continuous with stop nut 10
It screws, the positioning pin 4 of stop nut 10 is constantly compressed, and the positioning pin 4 of stop nut 10 can be caught in the arc-shaped of fastening nut 1
Groove 5, the positioning pin 4 of stop nut 10 can be in the moment stretching, extension for being caught in circular groove 5, then from circular groove depth at this time
Circular groove shallow end 6 is arrived at end 7, until skidding off circular groove 5, positioning pin elastic tip 9 can turn from extended configuration during this
Enter compressive state length constantly to reduce, until encountering next circular groove 5, repeatedly, until locking, limits spiral shell at this time
The positioning pin 4 of mother 10 is caught in the circular groove deep end 7 of fastening nut just.Double nut realizes self-locking function at this time.If met
It can be rotated to vibrations fastening nut 1 to the direction unscrewed, the circular groove deep end 7 of fastening nut 1 can be to stop nut 10
Positioning pin 4 generates active force so that stop nut 10 is also rotated to identical direction, and stop nut 10 screws direction
Direction is screwed with fastening nut 1 on the contrary, stop nut 10 can be rotated to the direction screwed at this time, the contact surface of stop nut 10
The contact surface of fastening nut 1 can be squeezed so that fastening nut 1 is rotated to the direction screwed, and double nut thus may be implemented
Self-locking function plays anti-loosening effect.Can along the design for the spacer pin 4 and circular groove 5 that 3 center line of blind hole moves,
So that the relative rotation of fastening nut 1 and stop nut 10 is equivalent to a ratchet structure, the loosening of fastening nut 1 can only cause
The fastening of stop nut 10.Stop nut 10 passes through the effect of contact surface again so that and fastening nut 1 is rotated to the direction of fastening,
So that fastening nut 1 rotates the reverse self-locking function of realizing double nut to the direction of fastening.Solves bolt well
The problem of nut fastener is loosened in the environment of Long-term Vibration, is fallen, to ensure that work in vibration environment machinery tight
The reliability of firmware and safety.
The ingenious combination by positive and negative two-flight screw screw rod and left-hand nut, right-handed thread nut of the present invention,
The two is set to be relatively fixed, left-hand nut and right-handed thread nut will form one by circular groove and movable positioning pin
A mutual lock body, will finally realize Bidirectional locking so that any loosening will not occur for fastener, ensure that the reliability and peace of equipment
Quan Xing.Double nut reverse thread anti-loosing fixing device can use the positioning pin of different materials according to the difference of working environment
Non-resilient end, to realize different functions and effect.If it is permanent fastenings, then the material of high intensity can be used
Material, such as the materials such as steel, high-strength alloy, realize permanent self-locking function.If it is the connector for being likely to require dismounting,
It then can be with materials such as use intensity smaller materials, such as aluminium, aluminium alloy.If it is the fastener for being frequently necessary to dismounting, then
The materials such as glass, plastics, timber can be used.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of double nut reverse thread anti-loosing fixing device, it is characterised in that by forward and reverse two-flight screw, fastening nut
Formed with stop nut, fastening nut close to fastenings, stop nut close to fastening nut, fastening nut and stop nut
Rotation direction of thread is on the contrary, when fastening nut is right-handed thread, and stop nut is left hand thread, and fastening nut is left hand thread
When, stop nut is right-handed thread；Fastening nut close to stop nut side setting there are one, it is two or more arc-shaped recessed
Grain, circular groove from the side surface of fastening nut from shallow to deep, the rotation that direction of rotation from the superficial to the deep is screwed with stop nut
Turn direction on the contrary, then circular groove is distributed on same circle if it is two or more circular grooves；Stop nut is close
Fastening nut be first arranged there are one, two or more blind holes, if it is two or more blind holes, then blind hole is distributed in same circle
On；Positioning pin can coordinate with circular groove when the side of fastening nut and the side of stop nut contact；It is arranged in blind hole
There are the positioning pin that can be moved along blind hole central shaft, positioning pin to be divided into two parts, a part is the non-resilient end of positioning pin, by non-
Elastic material is constituted, and another part is positioning pin elastic tip, is made of elastic material.
2. a kind of double nut reverse thread anti-loosing fixing device according to claim 1, it is characterised in that fastening nut
The blind hole that is arranged on the circular groove and stop nut of upper setting, positioning pin can be interchanged；On fastening nut be arranged blind hole with
And positioning pin, circular groove is set on stop nut.
3. a kind of double nut reverse thread anti-loosing fixing device according to claim 1, it is characterised in that positioning pin bullet
Property end could alternatively be spring.
4. a kind of double nut reverse thread anti-loosing fixing device according to claim 1, it is characterised in that positioning pin
Very section is round, ellipse or polygon.
5. a kind of double nut reverse thread anti-loosing fixing device according to claim 1, it is characterised in that fastening nut
It could alternatively be the combination of the fastener and bolt that are provided with screw hole with the combination of stop nut；In the fastener for being provided with screw hole
Toroidal cavity is arranged in surface, while blind hole, positioning pin is arranged in the nut inner side plane of bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820259883.1U CN207921095U (en) | 2018-02-19 | 2018-02-19 | A kind of double nut reverse thread anti-loosing fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820259883.1U CN207921095U (en) | 2018-02-19 | 2018-02-19 | A kind of double nut reverse thread anti-loosing fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207921095U true CN207921095U (en) | 2018-09-28 |
Family
ID=63601267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820259883.1U Expired - Fee Related CN207921095U (en) | 2018-02-19 | 2018-02-19 | A kind of double nut reverse thread anti-loosing fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207921095U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566565A (en) * | 2019-08-30 | 2019-12-13 | 南京斯杩克机器人技术有限公司 | anti-loosening mechanism for robot installation |
| WO2020083273A1 (en) * | 2018-10-23 | 2020-04-30 | 卢玉珊 | Anti-loosening, easy-open/close threaded fixing assembly and connecting structure |
| CN111207145A (en) * | 2020-02-17 | 2020-05-29 | 年双红 | Anti-seismic anti-falling self-locking screw combination |
| CN114151433A (en) * | 2021-12-31 | 2022-03-08 | 宝钢钢构有限公司 | Double-nut self-locking check bolt |
-
2018
- 2018-02-19 CN CN201820259883.1U patent/CN207921095U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020083273A1 (en) * | 2018-10-23 | 2020-04-30 | 卢玉珊 | Anti-loosening, easy-open/close threaded fixing assembly and connecting structure |
| CN110566565A (en) * | 2019-08-30 | 2019-12-13 | 南京斯杩克机器人技术有限公司 | anti-loosening mechanism for robot installation |
| CN111207145A (en) * | 2020-02-17 | 2020-05-29 | 年双红 | Anti-seismic anti-falling self-locking screw combination |
| CN114151433A (en) * | 2021-12-31 | 2022-03-08 | 宝钢钢构有限公司 | Double-nut self-locking check bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 Termination date: 20190219 |