CN114321136A - Anti-loosening structure and method for set screw - Google Patents
Anti-loosening structure and method for set screw Download PDFInfo
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- CN114321136A CN114321136A CN202111383646.9A CN202111383646A CN114321136A CN 114321136 A CN114321136 A CN 114321136A CN 202111383646 A CN202111383646 A CN 202111383646A CN 114321136 A CN114321136 A CN 114321136A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000002265 prevention Effects 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 210000005069 ears Anatomy 0.000 claims 1
- 239000011295 pitch Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a locking screw anti-loose structure and a locking screw anti-loose method, wherein the locking screw anti-loose structure comprises a mounting seat fixedly mounted, a locking screw and a piece to be locked are mounted on the mounting seat, the locking screw is a double-head locking stud, one end of the double-head locking stud is provided with a first thread, the other end of the double-head locking stud is provided with a second thread, the spiral directions of the first thread and the second thread are the same, the pitch of the first thread is larger than that of the second thread, the first thread is exposed out of the mounting seat and is in threaded connection with a locking nut, the second thread is connected with the mounting seat and abuts against the piece to be locked, a locking gasket is mounted between the locking nut and the mounting seat, and the locking gasket is simultaneously connected with the locking nut and the mounting seat, so that the locking nut is fixed on the mounting seat. When the double-end fastening stud has the tendency of outward screwing, the locknut and the mounting seat have the tendency of tighter connection, so that the outward screwing of the double-end fastening stud can be prevented, and the looseness prevention of the double-end fastening stud is realized.
Description
Technical Field
The invention relates to a set screw, in particular to a locking structure and a method of the set screw.
Background
The screw fastening connection is a common mechanical structure, and the anti-loosening mode mainly comprises two methods of increasing friction force and mechanically locking. The set screw is usually fastened by screw threads to perform a set function, which requires that the end of the set screw D is tightly attached to the piece E to be fastened, and the head of the set screw D is embedded into the mounting seat C or suspended outside the mounting seat C, as shown in fig. 1. However, the set screw D may receive a large axial force from the set member E during operation, and the effect is not ideal when the anti-loosening of the set screw is achieved by increasing the friction force.
At present, a bolt a is used for installing a pressing plate B on an installation seat C, and the pressing plate B is abutted against the head of a set screw D to realize the anti-loosening manner by extrusion, as shown in fig. 1. However, the extrusion anti-loosening mode puts high requirements on the processing technology of the pressure plate and the set screw, and meanwhile, the installation technology steps are also complex.
Disclosure of Invention
The invention aims to solve the technical problem that the anti-loose structure of the set screw is reliable in anti-loose and simple in process.
In order to solve the technical problems, the invention adopts the following technical scheme: a locking screw anti-loosening structure comprises a mounting seat fixedly mounted, wherein a locking screw and a locked piece are mounted on the mounting seat, the locking screw is in threaded connection with the mounting seat, meanwhile, the head end of the locking screw is exposed out of the mounting seat, and the end part of the locking screw abuts against the locked piece; the holding screw is double-end holding screw, the one end of double-end holding screw sets up first screw thread, and the other end sets up the second screw thread, and first screw thread is the same with the screw direction of second screw thread, and the pitch of first screw thread is greater than the pitch of second screw thread, and first screw thread exposes the outer and threaded connection lock nut of mount pad, second threaded connection the mount pad, lock nut with install the lock washer between the mount pad, the lock washer is connected simultaneously lock nut reaches the mount pad makes lock nut fixes on the mount pad.
When the double-end fastening stud is used, the double-end fastening stud is arranged on the mounting seat, a certain torque is applied to the double-end fastening stud to enable one end of the double-end fastening stud to fasten a fastened piece, the other end of the double-end fastening stud is fastened by the locknut matched with the double-end fastening stud, and the locknut is stopped by the stop washer to enable the locknut to be fixed on the mounting seat. Therefore, the locknut matched with the double-end fastening stud is relatively fixed with the mounting seat, so the double-end fastening stud cannot be unscrewed to achieve the anti-loose effect, meanwhile, because the first thread and the second thread of the double-end fastening stud have the same spiral direction, the thread pitch of the first thread positioned outside the mounting seat is larger than that of the second thread connected with the mounting seat, when the double-end fastening stud has the tendency of screwing out of the mounting seat, according to the relative motion principle, the locknut has the tendency of moving inwards (towards the mounting seat), and the speed of the trend of the inward movement of the locknut is larger than that of the outward screwing out tendency of the double-end fastening stud (because the thread pitch of the first thread is larger than that of the second thread), so that the locknut and the mounting seat have the tendency of being more tightly connected, the tendency of screwing out of the double-end fastening stud towards the mounting seat is blocked, and the anti-loose effect of the double-end fastening stud is further improved, the risk of breakage of the set screw is reduced.
Preferably, a partition plate is arranged between the stop washer and the mounting seat to separate two sections of threads with different screw pitches, and the stop washer is used as an auxiliary washer between the locknut and the mounting seat.
In a specific embodiment, two double-headed fastening studs are mounted on the mounting seat, a double-headed locking washer is selected as the locking washer, first threads of the two double-headed fastening studs are respectively in threaded connection with one locknut, second threaded ends of the two double-headed fastening studs respectively abut against the fastened piece, the double-headed locking washer is mounted between the two locknuts and the mounting seat, and ear portions of the double-headed locking washer are respectively bent towards the corresponding locknuts, so that the two locknuts are respectively fixed on the mounting seat.
Preferably, the locknut is an outer hexagon nut.
Based on the same invention concept, the invention provides a locking screw anti-loosening method, which comprises the following steps:
the method comprises the following steps that a double-end fastening stud is adopted, one end of the double-end fastening stud is provided with a first thread, the other end of the double-end fastening stud is provided with a second thread, the spiral directions of the first thread and the second thread are the same, and the thread pitch of the first thread is larger than that of the second thread;
the double-end fastening stud is installed on the installation seat through the second threads, and a certain torque is applied to the double-end fastening stud to enable the second threaded end of the double-end fastening stud to abut against the fastened piece placed in the installation seat;
sequentially arranging a partition plate, a stop washer and a locknut on a first threaded end of the double-ended fastening stud exposed out of the mounting seat, and applying a certain torque to the locknut to fasten the locknut, the stop washer, the partition plate and the mounting seat into a whole;
bending the ear part of the stop washer towards the locknut to connect the stop washer and the locknut into a whole;
when the double-end fastening stud has the trend of outwards unscrewing, the locknut and the mounting seat have the trend of connecting more closely to hinder the trend of outwards unscrewing of double-end fastening stud, reach locking effect.
Compared with the prior art, the invention has the beneficial effects that:
the anti-loose structure of the set screw has the advantages of simple structure, simple installation in implementation, safe and reliable anti-loose effect and capability of effectively avoiding the fracture of the set screw.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a conventional locking screw anti-loosening structure.
Fig. 2 is a schematic view of the locking structure of the set screw of the present invention.
FIG. 3 is a schematic front view of the stop washer and the locknut of the present invention.
In the figure: A. a bolt; B. pressing a plate; C. a mounting seat; D. tightening the screw; E. a fastened member;
1. a mounting seat; 2. a fastened member; 3. the stud is fastened by the double end; 4. a partition plate; 5. a stopper spacer; 6. a locknut.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
As shown in fig. 2 and fig. 3, an embodiment of the locking structure of the set screw of the present invention mainly comprises a set object 2, a mounting seat 1, a stud 3, a spacer 4, a stop washer 5 and a locknut 6.
The mounting seat 1 is fixedly mounted, and two double-end fastening studs 3 and a fastened piece 2 are mounted on the mounting seat 1. The one end of the double-end fastening screw 3 is provided with a first thread, the other end of the double-end fastening screw 3 is provided with a second thread, the spiral direction of the first thread is the same as that of the second thread, the thread pitch of the first thread is larger than that of the second thread, the first thread is exposed outside the mounting seat 1 and is in threaded connection with a locknut 6, and the second thread is connected with the mounting seat 1 and is abutted against the fastened part 2. And a stop washer 5 and a partition plate 4 are arranged between the locknut 6 and the mounting seat 1 (2 double-end fastening studs 3 share 1 stop washer 5 and 1 partition plate 4). The locking gasket 5 is a double-lug locking gasket, the lugs of the locking gasket 5 are respectively bent towards the corresponding locknuts 6, so that the locknuts 6 and the locking gaskets 5 are fastened into a whole, and meanwhile, the locknuts 6 fasten the locking gaskets 5 and the partition plates 4 on the mounting seat 1, so that the locknuts 6, the locking gaskets 5 and the partition plates 4 are fixed into a whole with the mounting seat 1.
The locknut 6 is preferably an outer hexagon nut.
The invention discloses a specific method for using a locking screw anti-loose structure, which comprises the following steps:
the stud fastening stud 3 is installed on the installation seat 1 by using the second threads, and a certain torque is applied to the stud fastening stud 3 to enable the second threaded end of the stud fastening stud 3 to abut against the fastened piece 2 placed in the installation seat 1;
a partition plate 4, a stop washer 5 and a locknut 6 are sequentially arranged on a first threaded end of the double-headed fastening stud 3 exposed out of the mounting seat 1, the locknut 6, the stop washer 5, the partition plate 4 and the mounting seat 1 are fastened into a whole by applying a certain torque to the locknut 6, reliable looseness prevention is realized, and the fastened part 2 is fastened by the double-headed fastening stud 3;
bending (flanging) the ear part of the stop washer 5 towards the locknut 6, so that the stop washer 5 and the locknut 6 are connected into a whole to prevent the locknut 6 from loosening;
when stud 3 has the trend of outwards unscrewing, locknut 6 and mount pad 1 have the trend of connecting inseparabler to hinder the trend of stud 3 outwards unscrewing, make locking effect further promote.
The above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modify equivalent embodiments using the technical content disclosed above without departing from the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (5)
1. A locking screw anti-loosening structure comprises a mounting seat fixedly mounted, wherein a locking screw and a locked piece are mounted on the mounting seat, the locking screw is in threaded connection with the mounting seat, meanwhile, the head end of the locking screw is exposed out of the mounting seat, and the end part of the locking screw abuts against the locked piece, and the locking screw anti-loosening structure is characterized in that the locking screw is a double-head locking stud, one end of the double-head locking stud is provided with a first thread, the other end of the double-head locking stud is provided with a second thread, the spiral directions of the first thread and the second thread are the same, the pitch of the first thread is larger than that of the second thread, the first thread is exposed out of the mounting seat and is in threaded connection with a locking nut, the second thread is connected with the mounting seat, a locking gasket is mounted between the locking nut and the mounting seat, and the locking gasket is simultaneously connected with the locking nut and the mounting seat, and fixing the locknut on the mounting seat.
2. The set screw loosening prevention structure as claimed in claim 1, wherein a spacer is installed between the stop washer and the mount base.
3. The anti-loosening structure for set screws according to claim 1, wherein two double-headed set studs are mounted on the mounting seat, a double-headed set stud is used as the stop washer, first threads of the two double-headed set studs are respectively in threaded connection with one of the locknuts, second threaded ends of the two double-headed set studs respectively abut against the to-be-fastened member, the double-headed set stud is mounted between the two locknuts and the mounting seat, and ears of the double-headed set stud are respectively bent toward the corresponding locknuts, so that the two locknuts are respectively fixed on the mounting seat.
4. The set screw looseness prevention structure of claim 1, wherein said looseness prevention nut is an outer hexagonal nut.
5. A set screw anti-loosening method, comprising:
adopting a double-ended fastening stud, wherein one end of the double-ended fastening stud is provided with a first thread, the other end of the double-ended fastening stud is provided with a second thread, and the thread pitch of the first thread is greater than that of the second thread;
the double-end fastening stud is installed on the installation seat through the second threads, and a certain torque is applied to the double-end fastening stud to enable the second threaded end of the double-end fastening stud to abut against the fastened piece placed in the installation seat;
sequentially arranging a partition plate, a stop washer and a locknut on a first threaded end of the double-ended fastening stud exposed out of the mounting seat, and applying a certain torque to the locknut to fasten the locknut, the stop washer, the partition plate and the mounting seat into a whole;
bending the ear part of the stop washer towards the locknut to connect the stop washer and the locknut into a whole;
when the double-end fastening stud has the trend of outwards screwing out, the locknut and the mounting seat have the trend of being connected more closely, thereby hindering the trend of outwards screwing out of the double-end fastening stud and realizing the looseness prevention of the double-end fastening stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111383646.9A CN114321136A (en) | 2021-11-22 | 2021-11-22 | Anti-loosening structure and method for set screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111383646.9A CN114321136A (en) | 2021-11-22 | 2021-11-22 | Anti-loosening structure and method for set screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114321136A true CN114321136A (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111383646.9A Pending CN114321136A (en) | 2021-11-22 | 2021-11-22 | Anti-loosening structure and method for set screw |
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| Country | Link |
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| CN (1) | CN114321136A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828072A (en) * | 2006-04-06 | 2006-09-06 | 金仁召 | Conjoined check washer for filtering core |
| CN201552207U (en) * | 2009-12-15 | 2010-08-18 | 衡阳中钢衡重设备有限公司 | Hot rolling coiler winding drum |
| CN202118079U (en) * | 2011-05-26 | 2012-01-18 | 西华大学 | Anti-loosening structure for thread connection |
| CN111173827A (en) * | 2020-01-21 | 2020-05-19 | 燕山大学 | Double-thread anti-loosening structure and double-thread anti-loosening method |
| CN210830103U (en) * | 2020-03-18 | 2020-06-23 | 成都迈特航空制造有限公司 | Locking structure |
-
2021
- 2021-11-22 CN CN202111383646.9A patent/CN114321136A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828072A (en) * | 2006-04-06 | 2006-09-06 | 金仁召 | Conjoined check washer for filtering core |
| CN201552207U (en) * | 2009-12-15 | 2010-08-18 | 衡阳中钢衡重设备有限公司 | Hot rolling coiler winding drum |
| CN202118079U (en) * | 2011-05-26 | 2012-01-18 | 西华大学 | Anti-loosening structure for thread connection |
| CN111173827A (en) * | 2020-01-21 | 2020-05-19 | 燕山大学 | Double-thread anti-loosening structure and double-thread anti-loosening method |
| CN210830103U (en) * | 2020-03-18 | 2020-06-23 | 成都迈特航空制造有限公司 | Locking structure |
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Application publication date: 20220412 |
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| RJ01 | Rejection of invention patent application after publication |