CN104500522B - Double-nut locking mechanism - Google Patents
Double-nut locking mechanism Download PDFInfo
- Publication number
- CN104500522B CN104500522B CN201410786647.1A CN201410786647A CN104500522B CN 104500522 B CN104500522 B CN 104500522B CN 201410786647 A CN201410786647 A CN 201410786647A CN 104500522 B CN104500522 B CN 104500522B
- Authority
- CN
- China
- Prior art keywords
- nut
- locking mechanism
- sleeve
- double
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral 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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
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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
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/103—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking cup washer, ring or sleeve surrounding the nut or bolt head and being partially deformed on the nut or bolt head, or on the object itself
- F16B39/105—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking cup washer, ring or sleeve surrounding the nut or bolt head and being partially deformed on the nut or bolt head, or on the object itself locking the bold head or nut into a hole or cavity, e.g. with the cup washer, ring or sleeve deformed into a dimple in the cavity
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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
Abstract
The invention discloses a door body mounting fastener, and particularly relates to a double-nut locking mechanism. The invention relates to a double-nut locking mechanism, which comprises a bolt, a first nut and a second nut which are in threaded connection with the tail end of the bolt, wherein the second nut is arranged between the first nut and the head part of the bolt, and also comprises an outer sleeve and an inner sleeve, the axial leads of the inner sleeve and the outer sleeve are consistent, and the inner sleeve is fixedly connected with the upper end of the outer sleeve; the upper end of the inner sleeve is propped against the first nut, and the lower end of the inner sleeve is propped against the second nut; the annular hoop comprises an outer ring and a group of protruding teeth arranged on the inner side of the outer ring, the protruding teeth are propped against the side face of the second nut, and the annular hoop is fixedly arranged on the inner wall of the outer sleeve. The double-nut locking mechanism solves the defect that nuts are easy to loosen in the prior art, and can enhance the connection stability between bolts and nuts.
Description
Technical Field
The invention relates to a door body mounting fastener, in particular to a double-nut locking mechanism.
Background
The bolt connection is a detachable connection formed by utilizing threaded parts, has simple structure and convenient assembly and disassembly, and is widely applied to various mechanical equipment. However, under impact, vibration or variable load, or under high temperature or large temperature variation, the pre-tightening force and friction force in the bolt connection can gradually decrease or possibly instantaneously disappear, and the connection is failed. Once the bolt connection fails, the normal operation of the machine is seriously affected, even an accident is caused.
In order to solve the above problems, a bolt structure with double nuts is provided in the prior art, that is, a nut is installed under the original nut to prevent the original nut from moving downwards. In this way, the loosening probability of the nuts (the probability of the two nuts which are closely abutted together being required to be loosened synchronously under the influence of external mechanical disturbance is lower than the probability of loosening of a single nut) can be reduced, but the phenomenon of loosening of the nuts can occur after long-term use.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-nut locking mechanism capable of enhancing the connection stability between a bolt and a nut.
In order to solve the technical problems, the invention adopts the following technical scheme:
the double-nut locking mechanism comprises a bolt, a first nut and a second nut which are in threaded connection with the tail end of the bolt, wherein the second nut is arranged between the first nut and the head of the bolt, the double-nut locking mechanism further comprises an outer sleeve and an inner sleeve, the axial leads of the inner sleeve and the outer sleeve are consistent, and the inner sleeve is fixedly connected with the upper end of the outer sleeve; the upper end of the inner sleeve is propped against the first nut, and the lower end of the inner sleeve is propped against the second nut; the nut is characterized by further comprising an annular hoop, the annular hoop comprises an outer ring and a group of protruding teeth arranged on the inner side of the outer ring, the protruding teeth are propped against the side face of the second nut, and the annular hoop is fixedly arranged on the inner wall of the outer sleeve.
The double-nut locking mechanism has the following technical effects:
the inner sleeve is clamped between the first nut and the second nut, and the inner sleeve is fixedly connected to the upper end of the outer sleeve, so that the inner sleeve can be positioned. Because the annular hoop is fixedly arranged on the inner wall of the outer sleeve, the annular hoop comprises a group of protruding teeth propped against the side surface of the second nut, and the outer peripheral side of the second nut is provided with protruding teeth propped against the second nut, so that the second nut is limited in the protruding teeth. If the second nut rotates, the annular hoop, the outer sleeve and the inner sleeve are required to be synchronously rotated, the second nut rotates and moves upwards, and the inner sleeve is arranged between the first nut and the second nut, so that the second nut moves upwards and is propped against the first nut through the inner sleeve.
Further, an annular groove is formed in the outer sleeve, and the outer ring is embedded into the annular groove.
The inserting way of the caulking groove can conveniently realize the detachable fixed connection between the outer ring and the annular groove.
Further, the protruding teeth at least comprise one positioning protruding tooth, and the length value of the positioning protruding tooth extending towards the inner side of the annular hoop exceeds the distance value between the annular hoop and the second nut by 0.5-0.8 cm.
The positioning protruding teeth are longer, when the nut is installed, the protruding teeth deform when propping against the side face of the second nut, the positioning protruding teeth can tilt upwards or downwards, and the protruding teeth can generate stronger acting force (mainly point to the axis of the second nut) on the second nut due to deformation.
Further, the lower end of the outer sleeve is provided with an opening groove which is communicated with the annular groove, and the protruding teeth comprise connecting protruding teeth which extend into the opening groove towards the outer side of the annular hoop.
In order to facilitate the insertion of the annular collar into the annular groove of the outer sleeve, the collar is advanced into the open groove by means of the connection lugs, then the collar is pushed into the outer sleeve from the lower end opening of the outer sleeve, and then the outer ring is inserted into the annular groove. The connection lugs extend into the open slots outwardly of the annular collar and also increase the synchronicity of rotation of the annular collar with the outer sleeve.
Drawings
Fig. 1 is a schematic structural view of a double nut locking mechanism of the present invention.
FIG. 2 is a schematic view of section A-A of FIG. 1.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples:
the invention relates to a double-nut locking mechanism, which comprises a bolt 1, a first nut 4 and a second nut 3 which are in threaded connection with the tail end of the bolt 1, wherein the second nut 3 is arranged between the first nut 4 and a bolt head 2, and a plate 10 which needs to be clamped and fixed is arranged between the second nut 3 and the bolt head 2.
The double-nut locking mechanism also comprises an outer sleeve 5 and an inner sleeve 6, wherein the axial leads of the inner sleeve 5 and the outer sleeve 5 are consistent, and the inner sleeve 6 is fixedly connected with the upper end of the outer sleeve 5; the upper end of the inner sleeve 6 abuts against the first nut 4, and the lower end of the inner sleeve 6 abuts against the second nut 3.
The middle of the inner sleeve 6 is provided with a hole, the size of the hole can at least allow the rod part of the bolt 1 to pass through, the surface wall of the inner sleeve 6 is smooth, and threads are not required to be arranged on the surface wall of the inner sleeve 6 due to design requirements.
The double-nut locking mechanism also comprises an annular hoop, the annular hoop comprises an outer ring and a group of protruding teeth arranged on the inner periphery side of the outer ring, the protruding teeth are propped against the side face of the second nut 3, and the annular hoop is fixedly arranged on the inner wall of the outer sleeve 5. The whole material of the annular hoop is made of beryllium bronze, the elasticity of the beryllium bronze is best, the tensile strength can reach 1250-1500 MPa after solution treatment and heat treatment, and the stability of elasticity and the dimensional stability are superior to those of spring steel.
An annular groove is formed in the outer sleeve 5, and the outer ring is embedded into the annular groove.
As shown in fig. 2, five positioning teeth 7 are provided in the teeth, and the length of the positioning teeth 7 extending to the inner side of the annular hoop exceeds the distance between the annular hoop and the second nut 3 by 0.7cm. The lower end of the outer sleeve 5 is provided with an open slot which opens into the annular slot, and one of the protruding teeth is provided with a connecting protruding tooth 8, and the connecting protruding tooth 8 extends into the open slot towards the outer side of the annular hoop.
For ease of installation, the annular collar is split in two according to the split line 9, a portion of which is first fitted into the outer sleeve 5 and then the remainder is again provided. Since the annular hoop is to be positioned by being inserted into the annular groove, the outer diameter of the annular hoop is larger than the inner diameter of the lower end of the outer sleeve 5, the annular hoop is divided for installation convenience, and the annular hoop is inserted into the annular groove by utilizing certain metal elasticity of the annular hoop.
While only the preferred embodiments of the present invention have been described, it should be noted that those skilled in the art could make several variations and modifications without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (4)
1. The utility model provides a double-nut locking mechanism, includes the bolt and with bolt tail end threaded connection's first nut and second nut, wherein the second nut establish with first nut and bolt head between, its characterized in that: the inner sleeve is fixedly connected to the upper end of the outer sleeve; the upper end of the inner sleeve is propped against the first nut, and the lower end of the inner sleeve is propped against the second nut; the annular hoop comprises an outer ring and a group of protruding teeth arranged on the inner side of the outer ring, the protruding teeth are propped against the side face of the second nut, the annular hoop is fixedly arranged on the inner wall of the outer sleeve, and the annular hoop is made of beryllium bronze.
2. The double nut locking mechanism as defined in claim 1, wherein: an annular groove is formed in the outer sleeve, and the outer ring is embedded into the annular groove.
3. The double nut locking mechanism as defined in claim 2, wherein: the protruding teeth at least comprise one positioning protruding tooth, and the length value of the positioning protruding tooth extending towards the inner side of the annular hoop exceeds the distance value between the annular hoop and the second nut by 0.5-0.8 cm.
4. The double nut locking mechanism as defined in claim 3, wherein: the lower end of the outer sleeve is provided with an opening groove which is led into the annular groove, and the protruding teeth comprise connecting protruding teeth which extend into the opening groove towards the outer side of the annular hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786647.1A CN104500522B (en) | 2014-12-18 | 2014-12-18 | Double-nut locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786647.1A CN104500522B (en) | 2014-12-18 | 2014-12-18 | Double-nut locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500522A CN104500522A (en) | 2015-04-08 |
| CN104500522B true CN104500522B (en) | 2023-07-07 |
Family
ID=52941955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410786647.1A Active CN104500522B (en) | 2014-12-18 | 2014-12-18 | Double-nut locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500522B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571735B (en) * | 2016-01-21 | 2018-05-29 | 中广核研究院有限公司 | Couple sealing |
| CN109804168B (en) * | 2016-08-16 | 2021-09-07 | 凯特克分部尤尼克斯公司 | Device for fastening and/or aligning objects |
| CN108608851A (en) * | 2018-06-06 | 2018-10-02 | 博众精工科技股份有限公司 | Automobile batteries retaining mechanism |
| CN112943779A (en) * | 2021-02-04 | 2021-06-11 | 大连理工大学 | Fastening method of anti-vibration fastening bolt |
| CN113606242B (en) * | 2021-07-28 | 2023-04-07 | 岚图汽车科技有限公司 | Anti-rotation nut assembly, steering gear mounting structure and mounting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2308869A1 (en) * | 1999-05-14 | 2000-11-14 | Automaxi Industries | Roof crossbar sliding assembly device |
| CA2537081A1 (en) * | 2003-08-22 | 2005-03-03 | Kyoso Corporation | Lock nut |
| JP2006167894A (en) * | 2004-12-20 | 2006-06-29 | Eco Tool:Kk | Double nut fastening tool |
| WO2009089265A2 (en) * | 2008-01-08 | 2009-07-16 | Cloyes Gear And Products, Inc. | Captive fastener apparatus for chain guide or tensioner arm |
| EP2511539A1 (en) * | 2011-04-11 | 2012-10-17 | Amec System GmbH | Screw connection |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076276U (en) * | 1989-12-30 | 1991-05-01 | 天津市电力学会科技咨询服务中心 | Theft-proof element for nut anchor clamp of supply line |
| DE4131812A1 (en) * | 1991-09-24 | 1993-04-01 | Itw Befestigungssysteme | SCREW CONNECTION FOR CONNECTING TWO SPACED COMPONENTS, IN PARTICULAR SHEETS |
| CN2246212Y (en) * | 1994-06-07 | 1997-01-29 | 张玉山 | Loosen-proof bolt group |
| EP0992695A1 (en) * | 1997-06-23 | 2000-04-12 | Kioka Gaishi Kogyo K.K. | Lock nut and attaching removing tool for same |
| ES2249267T3 (en) * | 1999-04-30 | 2006-04-01 | Crane-Resistoflex | NUT LOCK APPLIANCE. |
| CN1415864A (en) * | 2002-10-08 | 2003-05-07 | 李出新 | Locking bolt |
| CN2786345Y (en) * | 2005-05-19 | 2006-06-07 | 徐勤 | High-strength fastening nut and shim assembly |
| CN102506048A (en) * | 2011-08-05 | 2012-06-20 | 王大俊 | Anti-loosing clamping bolt set |
| CN202251362U (en) * | 2011-09-30 | 2012-05-30 | 中国石油天然气集团公司 | Bolt looseness prevention device |
| AU2012367224B2 (en) * | 2012-01-27 | 2015-12-03 | Flow-Rite Controls, Ltd. | Locking threaded fastener |
| CN204357863U (en) * | 2014-12-18 | 2015-05-27 | 重庆欧帆门业有限公司 | Double nut locking mechanism |
-
2014
- 2014-12-18 CN CN201410786647.1A patent/CN104500522B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2308869A1 (en) * | 1999-05-14 | 2000-11-14 | Automaxi Industries | Roof crossbar sliding assembly device |
| CA2537081A1 (en) * | 2003-08-22 | 2005-03-03 | Kyoso Corporation | Lock nut |
| JP2006167894A (en) * | 2004-12-20 | 2006-06-29 | Eco Tool:Kk | Double nut fastening tool |
| WO2009089265A2 (en) * | 2008-01-08 | 2009-07-16 | Cloyes Gear And Products, Inc. | Captive fastener apparatus for chain guide or tensioner arm |
| EP2511539A1 (en) * | 2011-04-11 | 2012-10-17 | Amec System GmbH | Screw connection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104500522A (en) | 2015-04-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230608 Address after: 365200 No. 666, Qingnian Road, Xuefeng Town, Mingxi County, Sanming City, Fujian Province Applicant after: State Grid Fujian Electric Power Co., Ltd. Mingxi County power supply Co. Address before: 401233 No. 2-13, First Floor, New Town Government Office Building, Changshou District, Chongqing Applicant before: CHONGQING OFAN DOOR INDUSTRY Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |