CN204357863U - Double nut locking mechanism - Google Patents
Double nut locking mechanism Download PDFInfo
- Publication number
- CN204357863U CN204357863U CN201420803776.2U CN201420803776U CN204357863U CN 204357863 U CN204357863 U CN 204357863U CN 201420803776 U CN201420803776 U CN 201420803776U CN 204357863 U CN204357863 U CN 204357863U
- Authority
- CN
- China
- Prior art keywords
- nut
- lobe
- circumferential band
- locking mechanism
- sleeve
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of door body mounting fastener, particularly relate to a kind of double nut locking mechanism.The utility model double nut locking mechanism, the first nut comprising bolt and be connected with bolt threads and the second nut, wherein the second nut is established and between the first nut and bolt head, also comprise an outer sleeve and inner sleeve, the shaft axis of inner and outer sleeves is consistent, and inner sleeve is fixed in the upper end of outer sleeve; Inner sleeve upper end and the first nut offset, and lower end and second nut of inner sleeve offset; Also comprise a circumferential band, circumferential band comprises an outer shroud and is located at one group of lobe of outer shroud inner circumferential side, and lobe all offsets with the second nut side, and circumferential band is fixedly arranged on the inwall of outer sleeve.The utility model solves the defect that nut in prior art easily loosens, and provides a kind of double nut locking mechanism that can strengthen connective stability between bolts and nuts.
Description
Technical field
The utility model relates to a kind of door body mounting fastener, particularly relates to a kind of double nut locking mechanism.
Background technique
Bolt Connection is the removable connection utilizing thread part to form, and its structure is simple, and mounting or dismounting are convenient, are widely used in various machinery.But under shock and vibration or varying load effect, or when high temperature or temperature variation larger, the pretightening force in Bolt Connection and frictional force can reduce gradually or may momentary loss, cause connecting losing efficacy.Bolt Connection, once lose efficacy, will have a strong impact on the normal work of machine, even cause the accident.
In order to solve the problem, in prior art, provide a kind of bolt arrangement with double nut, exactly a nut is installed below original nut again, moving down for preventing original nut.Although can reduce nut loosening probability (requiring the probability that two abut against nut together and synchronously loosen by external mechanical disturbing influence, lower than the probability of single nut loosening) like this, Long-Time Service, still there will be the phenomenon of nut loosening.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of double nut locking mechanism that can strengthen connective stability between bolts and nuts.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of double nut locking mechanism, the first nut comprising bolt and be connected with bolt threads and the second nut, wherein the second nut is established and between the first nut and bolt head, also comprise an outer sleeve and inner sleeve, the shaft axis of described inner and outer sleeves is consistent, and described inner sleeve is fixed in the upper end of outer sleeve; Inner sleeve upper end and the first nut offset, and lower end and second nut of inner sleeve offset; Also comprise a circumferential band, circumferential band comprises an outer shroud and is located at one group of lobe of outer shroud inner circumferential side, and described lobe all offsets with the second nut side, and described circumferential band is fixedly arranged on the inwall of outer sleeve.
Adopt the utility model double nut locking mechanism, there is following technique effect:
Be folded in by inner sleeve between first and second nut, because described inner sleeve is fixed in the upper end of outer sleeve, described inner sleeve also can be located.Because described circumferential band is fixedly arranged on the inwall of outer sleeve, circumferential band comprises the one group of lobe offseted with the second nut side, and the outer circumferential side of the second nut is the lobe offseted with the second nut entirely, so just by spacing for the second nut in lobe.If the second nut will rotate, circumferential band, outer sleeve, inner sleeve synchronous rotary will be caused, and the second nut can move up while rotating, and inner sleeve is provided between the first nut and the second nut, so the second nut moves and can be offseted by inner sleeve and the first nut, the utility model double nut locking mechanism is by the connection between prolongation the firstth nut and the second nut, make the second nut cannot directly act on the first nut, thus strengthen the stability of nut, avoid nut to loosen too early.
Further, described outer sleeve is provided with circular groove, and described outer shroud embeds in circular groove.
The mode that caulking groove inserts can realize dismountable between outer shroud with circular groove being fixedly connected with easily.
Further, described lobe at least comprises a location lobe, and the length value that location lobe extends inside circumferential band exceeds the distance value 0.5 ~ 0.8cm between circumferential band and the second nut.
Described location lobe is longer, during such installation, can there is deformation when offseting in described lobe and the second nut side, location lobe can tilt up or down, and described lobe is understood because of deformation produce active force (main sensing the second nut shaft axis) more strongly to the second nut.
Further, described outer sleeve lower end is provided with the opening slot passed in described circular groove, and described lobe comprises the connection lobe extended to outside circumferential band in opening slot.
Conveniently circumferential band is embedded in the circular groove of outer sleeve, penetrating in opening slot, locating in advance, being then squeezed in outer sleeve by circumferential band from the lower end mouth of outer sleeve, being then embedded in circular groove by outer shroud by connecting lobe.Connection lobe extends to and extends in opening slot outside circumferential band, too increases the synchronism of the rotation of circumferential band and outer sleeve.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model double nut locking mechanism.
Fig. 2 is A-A generalized section in Fig. 1.
Bolt 1, bolt head 2, first nut 4, second nut 3, outer sleeve 5, inner sleeve 6, location lobe 7, connection lobe 8, cutting lines 9, sheet material 10.
Embodiment
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated:
The utility model double nut locking mechanism, the first nut 4 and the second nut 3 comprising bolt 1 and be connected with bolt 1 threads, wherein the second nut 3 is established and between the first nut 4 and bolt head 2, is the sheet material 10 needing to grip between the second nut 3 and bolt head 2.
The utility model double nut locking mechanism also comprises an outer sleeve 5 and inner sleeve 6, and the shaft axis of described inner and outer sleeves 5 is consistent, and described inner sleeve 6 is fixed in the upper end of outer sleeve 5; Inner sleeve 6 upper end and the first nut 4 offset, and lower end and second nut 3 of inner sleeve 6 offset.
Perforate in the middle part of described inner sleeve 6, perforate size at least can be passed through for bolt 1 bar portion, and it is level and smooth that wall shown by inner sleeve 6, and for designing requirement, inner sleeve 6 is shown wall and be there is no need to arrange screw thread.
The utility model double nut locking mechanism also comprises a circumferential band, and circumferential band comprises an outer shroud and is located at one group of lobe of outer shroud inner circumferential side, and described lobe all offsets with the second nut 3 side, and described circumferential band is fixedly arranged on the inwall of outer sleeve 5.Circumferential band integral material adopts beryllium bronze to make, and beryllium bronze elasticity is best, and after solution treatment and heat treatment, tensile strength can reach 1250 ~ 1500MPa, is that stability or the dimensional stability of elastic force is all better than spring steel.
Described outer sleeve 5 is provided with circular groove, and described outer shroud embeds in circular groove.
As shown in Figure 2, have five to locate lobe 7 in described lobe, the length value that location lobe 7 extends inside circumferential band exceeds the distance value 0.7cm between circumferential band and the second nut 3.Described outer sleeve 5 lower end is provided with the opening slot passed in described circular groove, and also have one to connect lobe 8 in described lobe, this connection lobe 8 extends in opening slot outside circumferential band.
In order to easy for installation, described circumferential band is divided into two according to cutting lines 9, first wherein a circumferential band part will load in outer sleeve 5, and then refill remaining part.Because circumferential band will be located by being embedded in circular groove, so circumferential band external diameter can be larger than the internal diameter of outer sleeve 5 lower end, ability circumferential band split in order to easy for installation, and utilize the metallic elastic that circumferential band itself is certain, circumferential band is embedded in circular groove.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; also to make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. a double nut locking mechanism, the first nut comprising bolt and be connected with bolt threads and the second nut, wherein the second nut is established and between the first nut and bolt head, it is characterized in that: also comprise an outer sleeve and inner sleeve, the shaft axis of described inner and outer sleeves is consistent, and described inner sleeve is fixed in the upper end of outer sleeve; Inner sleeve upper end and the first nut offset, and lower end and second nut of inner sleeve offset; Also comprise a circumferential band, circumferential band comprises an outer shroud and is located at one group of lobe of outer shroud inner circumferential side, and described lobe all offsets with the second nut side, and described circumferential band is fixedly arranged on the inwall of outer sleeve.
2. double nut locking mechanism as claimed in claim 1, is characterized in that: described outer sleeve is provided with circular groove, and described outer shroud embeds in circular groove.
3. double nut locking mechanism as claimed in claim 2, is characterized in that: described lobe at least comprises a location lobe, and the length value that location lobe extends inside circumferential band exceeds the distance value 0.5 ~ 0.8cm between circumferential band and the second nut.
4. double nut locking mechanism as claimed in claim 3, is characterized in that: described outer sleeve lower end is provided with the opening slot passed in described circular groove, and described lobe comprises the connection lobe extended to outside circumferential band in opening slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803776.2U CN204357863U (en) | 2014-12-18 | 2014-12-18 | Double nut locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803776.2U CN204357863U (en) | 2014-12-18 | 2014-12-18 | Double nut locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357863U true CN204357863U (en) | 2015-05-27 |
Family
ID=53259336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420803776.2U Expired - Fee Related CN204357863U (en) | 2014-12-18 | 2014-12-18 | Double nut locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204357863U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500522A (en) * | 2014-12-18 | 2015-04-08 | 重庆欧帆门业有限公司 | Double-nut locking mechanism |
| CN106089875A (en) * | 2016-08-25 | 2016-11-09 | 安徽六方重联机械股份有限公司 | Plate connection bolt arrangement |
| CN107701351A (en) * | 2017-10-26 | 2018-02-16 | 哈尔滨电机厂有限责任公司 | A kind of Dual-safety protection structure of Hydropower Unit top cover bindiny mechanism |
| CN107842454A (en) * | 2017-10-26 | 2018-03-27 | 哈尔滨电机厂有限责任公司 | A kind of double flange arrangement pattern top cover safety protection structures of Hydropower Unit |
-
2014
- 2014-12-18 CN CN201420803776.2U patent/CN204357863U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500522A (en) * | 2014-12-18 | 2015-04-08 | 重庆欧帆门业有限公司 | Double-nut locking mechanism |
| CN106089875A (en) * | 2016-08-25 | 2016-11-09 | 安徽六方重联机械股份有限公司 | Plate connection bolt arrangement |
| CN107701351A (en) * | 2017-10-26 | 2018-02-16 | 哈尔滨电机厂有限责任公司 | A kind of Dual-safety protection structure of Hydropower Unit top cover bindiny mechanism |
| CN107842454A (en) * | 2017-10-26 | 2018-03-27 | 哈尔滨电机厂有限责任公司 | A kind of double flange arrangement pattern top cover safety protection structures of Hydropower Unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |