CN105134739A - Anti-dismantling fixed-torque combined nut - Google Patents
Anti-dismantling fixed-torque combined nut Download PDFInfo
- Publication number
- CN105134739A CN105134739A CN201510638605.8A CN201510638605A CN105134739A CN 105134739 A CN105134739 A CN 105134739A CN 201510638605 A CN201510638605 A CN 201510638605A CN 105134739 A CN105134739 A CN 105134739A
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- CN
- China
- Prior art keywords
- round nut
- pin
- nut
- diameter
- pin hole
- 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.)
- Pending
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- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses an anti-dismantling fixed-torque combined nut which is composed of a round nut, a hexagonal sleeve and pins, wherein the round nut looks like two coaxial cylinders with different diameters; the smaller end of the round nut is inserted into the larger end of a secondary through hole; the number of the pins is three times of the long cylinder structure; and the pins are simultaneously and perpendicularly inserted into a corresponding pin hole I and a pin hole II. In the mounting process, when the torque reaches a certain value, the three pins can be cut off, and the hexagonal sleeve can be separated from the round nut. The pins have definite shear strength, thereby implementing fixed torque mounting. After the hexagonal sleeve is separated, only the round nut is left on the bolt and can not be clamped by a general tool, thereby preventing the nut from being dismantled by the general tool.
Description
Technical field
The present invention relates to a kind of assembled nut, belong to fastening piece, especially can determine moment and install and the assembled nut that simple tool can not be used to remove after installation.
Background technique
Nut is a kind of conventional fastening piece, and usual and bolt combination completes fastening function.At some Code in Hazardous Special Locations, if nut install time moment too conference destroy fastening object, again can not be reliably fastening if moment is too little, therefore need nut can determine moment to install, simultaneously, because there is safety requirement, do not wish that nut can use general tool (as spanner, sleeve etc.) to remove after installing yet.Nut conventional at present does not possess determines moment installation function, and general tool can also be used to remove after installing, and cannot meet this type of Code in Hazardous Special Locations demand.
Summary of the invention
For the specific demand existed at present, the present invention devises a kind of anti-dismounting and determines moment assembled nut, and its scheme taked is:
This assembled nut is by round nut, hexagon cover and pin composition, round nut profile is two coaxial but cylindrical bodys that diameter is not identical, round nut center has screw hole vertically, the external lateral portion of round nut has three circular pin nail I with diameter vertically, each pin hole I central shaft is parallel with round nut central shaft, and their center of circle, cross section is circumferentially uniformly distributed at round nut place, hexagon cover profile is positive hexagonal prism structure, hexagon cover center has circular secondary through holes vertically, the external lateral portion that hexagon puts has three circular pin nail II with diameter vertically, it is parallel that each pin hole II central shaft and hexagon overlap central shaft, and their center of circle, cross section is circumferentially uniformly distributed at hexagon cover place, the secondary through holes comparatively Outside diameter being slightly less than hexagon cover compared with the diameter of small end of round nut, the degree of depth equaling the larger end of secondary through holes of hexagon cover compared with the axial length of small end of round nut, be greater than the large footpath of screw hole compared with the diameter of small end in secondary through holes, each pin hole I and each pin hole II is with diameter and the upper and lower one_to_one corresponding in position, the larger end being inserted into secondary through holes compared with small end of round nut, pin is three of long cylinder structure, and each pin is vertically inserted in corresponding pin hole I and pin hole II simultaneously.
When mounted, when moment reaches certain value, three pins can be cut off in the present invention, and hexagon cover is also separated with round nut.Because the shear strength of pin is certain, therefore achieve and determine moment installation, after hexagon cover is separated, only round nut is stayed on bolt, and general purpose tool cannot clamp, and general tool therefore can be avoided to remove.The present invention uses simply, can realize determining moment well and install and anti-dismounting.
Accompanying drawing explanation
Fig. 1 is schematic appearance of the present invention;
Fig. 2 is semi-section schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As depicted in figs. 1 and 2, round nut 1 profile is two coaxial but cylindrical bodys that diameter is not identical, round nut 1 center has screw hole 11 vertically, the external lateral portion of round nut 1 has three circular pin nail I12 with diameter vertically, each pin hole I12 central shaft is parallel with round nut 1 central shaft, and their center of circle, cross section is circumferentially uniformly distributed at round nut 1 place.It is positive hexagonal prism structure that hexagon overlaps 2 profiles, hexagon overlaps 2 centers and has circular secondary through holes 21 vertically, external lateral portion on hexagon cover 2 has three circular pin nail II22 with diameter vertically, it is parallel that each pin hole II22 central shaft and hexagon overlap 2 central shafts, and their center of circle, cross section is overlapped 2 places at hexagon and is circumferentially uniformly distributed.The secondary through holes 21 comparatively Outside diameter being slightly less than hexagon cover 2 compared with the diameter of small end of round nut 1, the degree of depth equaling the larger end of secondary through holes 21 of hexagon cover 2 compared with the axial length of small end of round nut 1, be greater than the large footpath of screw hole 1 compared with the diameter of small end in secondary through holes 21, each pin hole I12 and each pin hole II22 is with diameter and the upper and lower one_to_one corresponding in position, the larger end being inserted into secondary through holes 21 compared with small end of round nut 1, pin 3 is three of long cylinder structure, each pin 3 is vertically inserted in corresponding pin hole I12 and pin hole II22 simultaneously, it is interference fit between them.
During installation, round nut 1 is twisted and receives on same specification bolt, use tool holding at hexagon cover 2 and tighten, along with the moment of instrument strengthens gradually, the shearing force suffered by pin 3 also strengthens, when shearing force is greater than the ability to bear of pin 3, pin 3 is cut off, and hexagon cover 2 is separated with round nut 1.Because the shear strength of pin 3 is certain, therefore achieve and determine moment installation, after hexagon cover 2 is separated, only round nut 1 is stayed on bolt, and general purpose tool cannot clamp, and general tool therefore can be avoided to remove.By adjusting the diameter of pin 3, pin hole I12 and pin hole II22 simultaneously, can the mounting torque of Indirect method assembled nut.
Claims (1)
1. moment assembled nut is determined in an anti-dismounting, by round nut (1), hexagon cover (2) and pin (3) composition, it is characterized in that: round nut (1) profile is two coaxial but cylindrical bodys that diameter is not identical, round nut (1) center has screw hole (11) vertically, the external lateral portion of round nut (1) has three circular pin nail I(12 with diameter vertically), each pin hole I(12) central shaft is parallel with round nut (1) central shaft, and their center of circle, cross section is circumferentially uniformly distributed at round nut (1) place, hexagon cover (2) profile is positive hexagonal prism structure, hexagon cover (2) center has circular secondary through holes (21) vertically, external lateral portion on hexagon cover (2) has three circular pin nail II(22 with diameter vertically), each pin hole II(22) central shaft is parallel with hexagon cover (2) central shaft, and their center of circle, cross section is circumferentially uniformly distributed at hexagon cover (2) place, secondary through holes (21) the comparatively Outside diameter being slightly less than hexagon cover (2) compared with the diameter of small end of round nut (1), the degree of depth equaling secondary through holes (21) the larger end of hexagon cover (2) compared with the axial length of small end of round nut (1), be greater than the large footpath of screw hole (1) compared with the diameter of small end in secondary through holes (21), each pin hole I(12) and each pin hole II(22) with diameter and the upper and lower one_to_one corresponding in position, the comparatively small end of round nut (1) is inserted into the larger end of secondary through holes (21), three that pin (3) is long cylinder structure, each pin (3) is vertically inserted into corresponding pin hole I(12 simultaneously) and pin hole II(22) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638605.8A CN105134739A (en) | 2015-10-08 | 2015-10-08 | Anti-dismantling fixed-torque combined nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638605.8A CN105134739A (en) | 2015-10-08 | 2015-10-08 | Anti-dismantling fixed-torque combined nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105134739A true CN105134739A (en) | 2015-12-09 |
Family
ID=54720236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510638605.8A Pending CN105134739A (en) | 2015-10-08 | 2015-10-08 | Anti-dismantling fixed-torque combined nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105134739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747565A (en) * | 2013-12-26 | 2015-07-01 | 上海保隆汽车科技股份有限公司 | Fixed-torque nut |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5927917A (en) * | 1998-06-15 | 1999-07-27 | Gibbons; Rodney | Self-torquing nut |
| JP2000356213A (en) * | 1999-06-15 | 2000-12-26 | Koyo Kizai Kk | Bolt-nut detachment preventing device |
| CN205036703U (en) * | 2015-10-08 | 2016-02-17 | 国网山东省电力公司泰安供电公司 | Prevent demolising and decide moment combination nut |
-
2015
- 2015-10-08 CN CN201510638605.8A patent/CN105134739A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5927917A (en) * | 1998-06-15 | 1999-07-27 | Gibbons; Rodney | Self-torquing nut |
| JP2000356213A (en) * | 1999-06-15 | 2000-12-26 | Koyo Kizai Kk | Bolt-nut detachment preventing device |
| CN205036703U (en) * | 2015-10-08 | 2016-02-17 | 国网山东省电力公司泰安供电公司 | Prevent demolising and decide moment combination nut |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747565A (en) * | 2013-12-26 | 2015-07-01 | 上海保隆汽车科技股份有限公司 | Fixed-torque nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |
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| WD01 | Invention patent application deemed withdrawn after publication |