CN201326630Y - Unloosening bolt - Google Patents
Unloosening bolt Download PDFInfo
- Publication number
- CN201326630Y CN201326630Y CNU2008202285918U CN200820228591U CN201326630Y CN 201326630 Y CN201326630 Y CN 201326630Y CN U2008202285918 U CNU2008202285918 U CN U2008202285918U CN 200820228591 U CN200820228591 U CN 200820228591U CN 201326630 Y CN201326630 Y CN 201326630Y
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- China
- Prior art keywords
- screw
- polished rod
- boss
- bolt
- screw head
- 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 provides an eccentric prevention reinforced unloosening bolt, which solves the problems of poor loosening prevention effect and easy cracking from the root of the existing unloosening bolt. The unloosening bolt comprises a bolt head, a polished rod and threads. One end of the polished rod is connected with the inner side of the screw head; the other end of the polished rod is connected with the threads; a lug boss is arranged at the connecting part of the polish rod and the inner side of the bolt head; the addition of the lug boss avoids the eccentricity of a spring washer and a flat washer, enhances the loosening prevention effect and enhances the strength of the bolt, moreover, the cracking from the root is not easy to be caused.
Description
Technical field
The utility model relates to a kind of screw of not deviating from, and is specifically related to a kind of anti-eccentric enhancing and does not deviate from screw.
Background technique
At machinery, in the electronic equipment, particularly field such as Aeronautics and Astronautics is with in machinery, the electronic equipment, requires join strength height, part for convenience detach, and dismounting back standard piece (as screw, bullet pad, plain cushion etc.) difficult drop-off.It is for convenience detach when satisfying join strength not deviate from screw, can prevent that again standard piece from coming off, and therefore is applied in such field widely.
Have now and do not deviate from screw, derive a lot of series product, but its main structure is formed by three parts: screw head, polished rod transition portion and helical thread portion according to GB, air standard and aerospace standard etc.Wherein screw head has straight groove, cross recess, flower groove etc., and the screw length nominal has certain preferred series, does not usually saidly deviate from the summation that screw length is helical thread portion and polished rod transition portion length.
But there is following defective in the screw of not deviating from of this structure:
1. bullet pad, plain cushion off-centre, the bullet pad can't compress, and anti-loosing effect is poor.Because condition restriction such as usage space, screw head part diameter is generally less than bullet pad external diameter, even the screw head diameter is greater than bullet pad external diameter, because bullet pad internal diameter is greater than the polished rod part, possible excesssive gap, it is big bullet pad move left and right scope to occur, it is too much to exceed the screw head diameter range, cause the bullet pad can only press one side of something, can't flatten fully, compress, cause anti-loosing effect poor.
2. easily rupture from root.The cross that requires screw head inside to be processed with in the practical application to cooperate or straight groove etc. with assembly tools such as screw-drivers, because slotted head screw screw-driver when assembling easily skids off, assembling is difficult for the location, is not easy to realize the automation assembling, and using scope reduces gradually in recent years.Cruciform slot screw by with overcome above-mentioned shortcoming and obtained increasing application, but because cross recess is not high in processing groove depth control accuracy, it is thin to cause screw head to be connected with the polished rod transition portion, strength deficiency, will cause screw to rupture in actual use, cause potential safety hazard from root.
Summary of the invention
The purpose of this utility model is: provide a kind of anti-eccentric enhancing not deviate from screw, to solve the existing problem of not deviating from the screw check weak effect, easily rupturing from root.
Technical solution of the present utility model is:
A kind ofly do not deviate from screw, comprise screw head, polished rod and screw thread, an end of polished rod is connected with screw head is inboard, the other end of polished rod be threaded, polished rod and joint, screw head inboard are provided with boss.
Above-mentioned boss is cylindrical boss, polygonal boss or gear shape boss.
Above-mentioned boss and polished rod joint are provided with excessive chamfering or excessive circular arc.
The above-mentioned cylindrical boss outside is provided with at least three grooves that are parallel to the polished rod direction; The above-mentioned polygonal boss outside is provided with at least three grooves that are parallel to the polished rod direction.
Above-mentioned boss and polished rod joint are provided with excessive chamfering or excessive circular arc.
The external diameter of above-mentioned boss is less than the external diameter of screw head, and the internal diameter of above-mentioned boss is greater than the external diameter of polished rod.
Advantage of the present utility model is:
1. avoid bullet to level up the off-centre of pad, strengthened anti-loosing effect.
Screw polished rod part has increased boss with the screw head joint, the polished rod part reduces with bullet pad, plain cushion fit up gap, and screw left and right sides extent of the error dwindles, and the external diameter of bullet pad and plain cushion is limited within the screw head diameter range fully, so just the bullet pad can be compressed, satisfy locking requirement.
2. strengthened the intensity of screw, solved and do not deviate from screw from the root breakage problem.
Screw polished rod part root has increased boss, although cross recess in that to add the man-hour degree of depth dark excessively, it is big that polished rod transition portion and screw head attachment portion diameter become, increase the attachment portion, join strength strengthens.Overcome the shortcoming of screw root strength deficiency.
3. can directly replace highly versatile.
Do not influence common assembling, can directly replace routine and not deviate from screw, do not need Environmental Conditions is made amendment.
Description of drawings
Fig. 1 is the anti-eccentric structural representation of not deviating from screw that strengthens;
Fig. 2 is that anti-eccentric the enhancing do not deviate from the screw erection drawing.
Embodiment
Below in conjunction with accompanying drawing content of the present utility model is illustrated.
As shown in Figure 1: the utility model comprises screw head 1, polished rod 2 and screw thread 3, and polished rod 2 is provided with boss 4 with screw head 1 inboard joint, and boss 4 can select to be processed as cylindrical, changeable shape, gear type, wherein with cylindrical the best.If boss 4 is cylindrical or during polygonal, can open by equally distributed at least 3 grooves from its outside.Boss 4 is adding degree of depth intensification in man-hour, but polished rod 2 transition portions and screw head 1 attachment portion diameter become big, and increase the attachment portion, and join strength strengthens.Overcome the shortcoming of screw root strength deficiency.The increase of boss 4 makes the polished rod part reduce with bullet pad 7, plain cushion 8 fit up gaps, and screw left and right sides extent of the error dwindles, and bullet pad 7 is limited within the screw head diameter range fully with the external diameter of plain cushion 8, and bullet pad 7 is compressed, and satisfies locking requirement.The end that boss 4 is connected with polished rod 2 is provided with excessive chamfering 41, and excessively being provided with of chamfering reduced stress and concentrated, and strengthened intensity.The external diameter of boss 4 is less than the external diameter of screw head, and internal diameter is greater than the external diameter of polished rod.
Under common assembling situation, do not deviate from screw to satisfy first link 5 and requirement, do not deviate to assemble successively under the screw head bullet pad 7, plain cushion 8, first link 5 and second link 6.First link, the 5 processing screw thread corresponding with not deviating from screw, second link 6 except guarantee with do not deviate from the effective thread that screw is connected, one section unthreaded hole also should be arranged, the unthreaded hole diameter is greater than major diameter of thread, only in this way, could guarantee under first link 5 and situation that second link 6 does not separate fully, to play effect.Owing on first link 5 screw thread is arranged, guarantees that not deviating from screw does not need to pull down from first link 5, prevents that standard piece is scattered.
Condition only satisfies the usage requirement under usual conditions above satisfying, also should be in exploiting field under the concrete condition at measure, for example need first link 5 that connects and second link, 6 intensity the strength of materials (aluminium or plastics etc.) less than standard piece, dismounting may cause the stripped thread phenomenon after several times repeatedly, just should take to increase the measure that steel-wire screw-socket etc. prevents stripped thread on second link 6.Just can better meet suitable requirement.
Claims (5)
1. do not deviate from screw for one kind, comprise screw head, polished rod and screw thread, an end of polished rod and screw head are inboard to be connected, the other end of polished rod be threaded, it is characterized in that: described polished rod and joint, screw head inboard are provided with boss.
2. do not deviate from screw according to claim 1 is described, it is characterized in that: described boss is cylindrical boss, polygonal boss, gear shape boss.
3. according to the described place's screw that do not take off of claim 2, it is characterized in that: described boss and polished rod joint are provided with excessive chamfering or excessive circular arc.
4. do not deviate from screw according to claim 3 is described, it is characterized in that: the described cylindrical boss outside is provided with equally distributed at least three grooves that are parallel to the polished rod direction; The described polygonal boss outside is provided with equally distributed at least three grooves that are parallel to the polished rod direction.
5. according to arbitrary described screw of not deviating from claim 2 or 3 or 4, it is characterized in that: the external diameter of described boss is less than the external diameter of screw head, and the internal diameter of described boss is greater than the external diameter of polished rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202285918U CN201326630Y (en) | 2008-12-31 | 2008-12-31 | Unloosening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202285918U CN201326630Y (en) | 2008-12-31 | 2008-12-31 | Unloosening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201326630Y true CN201326630Y (en) | 2009-10-14 |
Family
ID=41178603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202285918U Expired - Fee Related CN201326630Y (en) | 2008-12-31 | 2008-12-31 | Unloosening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201326630Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819736A (en) * | 2010-04-21 | 2010-09-01 | 深圳市洲明科技股份有限公司 | LED display screen and installing and disassembling method thereof |
| CN104976212A (en) * | 2014-04-04 | 2015-10-14 | 上海机电工程研究所 | Screw connecting device |
| CN106168246A (en) * | 2016-08-24 | 2016-11-30 | 江苏昊嘉不锈钢标准件有限公司 | A kind of high strength anti-loose screw column |
| CN106321597A (en) * | 2015-06-26 | 2017-01-11 | 北京谊安医疗系统股份有限公司 | Anti-disengaging thread fastening device |
| CN107764648A (en) * | 2017-11-02 | 2018-03-06 | 新界泵业集团股份有限公司 | Motor self-clinching iron core folds riveting power mechanism for testing and method of testing |
-
2008
- 2008-12-31 CN CNU2008202285918U patent/CN201326630Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819736A (en) * | 2010-04-21 | 2010-09-01 | 深圳市洲明科技股份有限公司 | LED display screen and installing and disassembling method thereof |
| CN104976212A (en) * | 2014-04-04 | 2015-10-14 | 上海机电工程研究所 | Screw connecting device |
| CN106321597A (en) * | 2015-06-26 | 2017-01-11 | 北京谊安医疗系统股份有限公司 | Anti-disengaging thread fastening device |
| CN106168246A (en) * | 2016-08-24 | 2016-11-30 | 江苏昊嘉不锈钢标准件有限公司 | A kind of high strength anti-loose screw column |
| CN107764648A (en) * | 2017-11-02 | 2018-03-06 | 新界泵业集团股份有限公司 | Motor self-clinching iron core folds riveting power mechanism for testing and method of testing |
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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: 20091014 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |