CN214146211U - Opposite-top nut anti-loosening screw - Google Patents
Opposite-top nut anti-loosening screw Download PDFInfo
- Publication number
- CN214146211U CN214146211U CN202023122637.8U CN202023122637U CN214146211U CN 214146211 U CN214146211 U CN 214146211U CN 202023122637 U CN202023122637 U CN 202023122637U CN 214146211 U CN214146211 U CN 214146211U
- Authority
- CN
- China
- Prior art keywords
- thread
- nut
- loose
- locknut
- threaded
- 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.)
- Active
Links
Images
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model provides a to top nut locking screw relates to locking screw technical field, and the preparation technical requirement who has solved existence among the prior art is high, the nut easily produces and hinders technical problem such as detain or slip-thread, pretightning force are not enough. The device comprises a stud and a nut; a first threaded part and a second threaded part are arranged on the stud, and the nut is detachably connected with the first threaded part and the second threaded part; the rotation direction of the external thread on the first thread part is opposite to that of the external thread on the second thread part; one end of the first thread part is connected with the stud, and the other end of the first thread part is connected with the second thread part; the diameter of the first threaded portion is larger than the diameter of the second threaded portion. The utility model is used for high frequency vibration bolt installation department such as railway cement road pillow and fastener realizes the locking of bolt through different nuts in the different rotation modes of first screw portion and second screw portion.
Description
Technical Field
The utility model belongs to the technical field of the check screw technique and specifically relates to a jam nut check screw is related to.
Background
At present, various anti-loosening screws are applied, but all have certain defects, or under the condition of strict high-frequency vibration, the anti-loosening effect is effective, but the requirements of long-term anti-loosening or rigid strength cannot be maintained. Or the use of long pretension tends to loosen or in the case of technical monopolies, the costs are too expensive.
Aiming at the current situation and the defects of the applied anti-loose screw, the anti-loose screw of the opposite-top nut needs to be designed, the prior art is improved, and the anti-loose performance of the screw is further improved. The manufacturing technology is simple and easy to implement, and the cost is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a jam nut lock screw has solved the preparation technical requirement that exists among the prior art height, nut easily produce hinder detain or the thread slipping, the not enough technical problem of pretightning force. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a locknut lock screw, which comprises a stud and a nut;
a first threaded part and a second threaded part are arranged on the stud, and the nut is detachably connected with the first threaded part and the second threaded part;
the rotation direction of the external thread on the first thread part is opposite to that of the external thread on the second thread part;
one end of the first thread part is connected with the stud, and the other end of the first thread part is connected with the second thread part;
the diameter of the first threaded portion is larger than the diameter of the second threaded portion.
Preferably, the nut includes holding nut and locknut, the internal thread of holding nut with locknut is that the internal thread direction of rotation is opposite, holding nut with first screw portion can dismantle the connection, locknut with second screw portion can dismantle the connection.
Preferably, the external thread of the first thread part is a right-hand thread, and the corresponding internal thread of the fastening nut is a right-hand thread; the external thread of the second thread part is a left-hand thread, and the corresponding internal thread of the locknut is a left-hand thread.
Preferably, the external thread of the first thread part is a left-hand thread, and the corresponding internal thread of the fastening nut is a left-hand thread; the external thread of the second thread part is a right-hand thread, and the corresponding internal thread of the locknut is a right-hand thread.
Preferably, the opposite sides of the locknut have a size larger than the diameter of the first threaded part.
Preferably, the locknut is further provided with a threadless space, the threadless space is communicated with the thread space on the locknut, and the threadless space is arranged at one end facing the first thread part.
Preferably, the diameter of the threadless space is greater than or equal to the diameter of the first threaded portion, and when the locknut is screwed on the second threaded portion, the threadless space is sleeved outside the first threaded portion.
Preferably, the fastening nut is screwed on the first threaded portion, and when the locknut is screwed on the second threaded portion, the locknut abuts against the fastening nut.
Preferably, the anti-loosening nut further comprises a protecting sleeve, and the protecting sleeve is covered on the anti-loosening nut.
Preferably, the first threaded portion and the second threaded portion are both provided coaxially with the stud.
The utility model provides a technical proposal which comprises a stud and a nut; the stud is provided with a first threaded part and a second threaded part, and the nut is detachably connected with the first threaded part and the second threaded part; the rotation direction of the external thread on the first thread part is opposite to that of the external thread on the second thread part; one end of the first thread part is connected with the stud, and the other end of the first thread part is connected with the second thread part; the diameter of first screw portion is greater than the diameter of second screw portion, and two opposite nuts of twisting can support tightly each other, can avoid becoming flexible through supporting the power and make it avoid, and the degree of difficulty in man-hour can be reduced to the difference of two screw portion diameters size, reduces technical requirement, and the difficult powerful impact of axial of the nut of this kind of structure is hindered and is detained or the thread slipping, can apply necessary pretightning force simultaneously when using, the untight condition is twisted to the nut can not appear.
The utility model discloses preferred technical scheme can also produce following technological effect at least: the nut comprises a fastening nut and a locknut, the rotation direction of the internal thread of the fastening nut is opposite to that of the internal thread of the locknut, the fastening nut is detachably connected with the first thread part, the locknut is detachably connected with the second thread part, the fastening nut is used for abutting against the connecting piece, the locknut is screwed on the second thread part and is used for abutting against the fastening nut, and finally, the anti-loosening effect on the locknut is realized;
the size of the opposite side of the nut of the locknut is larger than the diameter of the first thread part, and the bottom surface of the locknut can be tightly abutted against the upper surface of the fastening nut, so that the fastening nut is prevented from loosening on the first thread part;
the locknut is also provided with a screw thread-free space which is communicated with the thread space on the locknut, the screw thread-free space is arranged at one end facing the first thread part, when the pretightening force required by the locknut is larger, a part of the first thread part possibly leaks out, the screwing of the locknut on the second thread part cannot be abutted against the locknut under the influence of the part, and the locknut can be continuously screwed by setting the screw thread-free space so as to be abutted against the locknut;
the anti-loose nut protective cover is characterized by further comprising a protective cover, the protective cover is covered on the anti-loose nut, and the protective cover can cover the anti-loose nut and avoid corrosion caused by contact with the outside.
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 described below, it is obvious that the drawings in the following description are only 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 split structure of a locknut and a lockscrew provided by an embodiment of the present invention;
fig. 2 is a schematic view of a mounting structure of a locknut according to an embodiment of the present invention;
FIG. 3 is a schematic view of an installation structure of a foundation bolt of the locknut locking screw provided by the embodiment of the present invention;
fig. 4 is a schematic view of a mounting structure of the double-headed opposite-top nut anti-loose screw provided by the embodiment of the utility model.
FIG. 1-stud; 2-a nut; 201-fastening a nut; 202-locknut; 3-a first threaded portion; 4-a second threaded portion; 5-no thread space; 6-protective sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The specific embodiment of the utility model provides a locknut screw, as shown in the attached figures 1-4, comprising a stud 1 and a nut 2; specifically, a first thread part 3 and a second thread part 4 are arranged on a stud 1, a matched nut 2 is detachably connected to the first thread part 3 and the second thread part 4, one end of the first thread part 3 is connected with the stud 1, the other end of the first thread part 3 is connected with the second thread part 4, the stud 1, the first thread part 3 and the second thread part 4 together form a bolt, and the first thread part 3 and the second thread part 4 are arranged coaxially with the stud 1. The end of the stud 1 far away from the first thread part 3 can be designed into a large head, a t-shaped anchor head and the like, and the first thread part 3 and the second thread part 4 can adopt threads which are turned in opposite rotating directions on the stud 1, namely the rotating direction of the external thread on the first thread part 3 is opposite to the rotating direction of the external thread on the second thread part 4; meanwhile, the diameter of the first thread part 3 is designed to be larger than that of the second thread part 4, the inner diameter of the nut 2 arranged on the first thread part 3 is larger than that of the second thread part 4, and the nut 2 can directly penetrate through the second thread part 4 to be screwed on the first thread part 3 and then be screwed on the nut 2 on the second thread part 4.
The nut 2 provided in the embodiment of the present application includes a fastening nut 201 and a locknut 202, the fastening nut 201 is screwed on the first threaded portion 3, and the locknut 202 is screwed on the second threaded portion 4, so that it is necessary that the rotation direction of the internal thread of the fastening nut 201 is opposite to the rotation direction of the internal thread of the locknut 202, the fastening nut 201 is detachably connected to the first threaded portion 3, and the locknut 202 is detachably connected to the second threaded portion 4; when the fastening nut 201 is screwed on the first screw portion 3 and the locknut 202 is screwed on the second screw portion 4, the locknut 202 abuts against the fastening nut 201.
The specific thread rotation direction may be as follows:
the external thread of the first thread part 3 can adopt a right-handed thread, and the corresponding internal thread of the fastening nut 201 is also a right-handed thread, so that the fastening nut 201 can be screwed on the first thread part 3; at this time, the male screw of the corresponding second screw portion 4 is a left-hand screw, and the female screw of the locknut 202 is a left-hand screw, so that the locknut 202 can be screwed to the second screw portion 4.
The external thread of the first thread part 3 can be designed as a left-hand thread, and the corresponding internal thread of the fastening nut 201 is a left-hand thread; at the same time, the external thread of the second thread part 4 is a right-hand thread, and the corresponding internal thread of the locknut 202 is a right-hand thread.
The anti-loose function of the opposite-top nut anti-loose screw is realized by the mutual abutting between the fastening nut 201 and the anti-loose nut 202, so the size of the nut opposite side of the anti-loose nut 202 is required to be designed to be larger than the diameter of the first thread part 3, and the bottom surface of the anti-loose nut 202 can be contacted with the upper surface of the fastening nut 201.
Further, in order to make the fastening nut 201 and the locknut 202 abut against each other, the locknut 202 is further provided with a threadless space 5, the threadless space 5 is communicated with the thread space on the locknut 202, and the threadless space 5 is arranged at the end facing the first thread portion 3, the threadless space 5 is designed to allow a part of the locknut 202 to be inserted into the first thread portion 3, because the screwing degree of the fastening nut 201 on the first thread portion 3 is affected by the width of the connecting component, after the fastening nut 201 is screwed onto the first thread portion 3 and the required pre-tightening force is applied, a small distance of exposure occurs at the position of the first thread portion 3 close to the second thread portion 4, if the threadless space 5 is not arranged on the locknut 202, the locknut 202 cannot abut against the fastening nut 201 after being screwed to the end, and therefore the threadless space 5 needs to be designed, so that the locknut 202 can be partially fitted to the outside of the first threaded part 3.
The diameter of the unthreaded space 5 needs to be greater than or equal to the diameter of the first threaded portion 3, so that a part of the locknut 202 can be sleeved on the first threaded portion 3, and when the locknut 202 is screwed on the second threaded portion 4, the unthreaded space 5 is sleeved outside the first threaded portion 3.
The protection sleeve 6 can also be designed as shown in fig. 3, and the protection sleeve 6 is covered on the locknut 202, so that the rusting and the dust invasion at the locknut 202 can be effectively prevented.
The working principle of the device is described by combining the structure and the specific use mode as follows:
after the two iron plates are firmly fastened by the fastening nut 201 and the locknut 202 through the stud 1, a screw pre-tightening force is generated, and the two iron plates are firmly pressed together. When the iron plate and the bolt are under the condition of high-frequency change of vibration force and shearing force. The lock nut 201 tends to rotate in the loosening direction, but the locknut 202 is threaded in the opposite direction to the lock nut 201. Since the locknut 202 is pressed against the fastening nut 201, the rotational direction in which the fastening nut 201 is loosened is exactly the direction in which the locknut 202 is fastened. The direction in which the lock nut 201 is loosened and the direction in which the lock nut 202 is tightened form a butting force or an impact force. Therefore, the phenomenon of bolt loosening is completely prevented, and due to the fact that a certain abutting force exists between the set nut 201 and the locknut 202, under the effect of the abutting force, the locknut 202 can receive axial acting force, the acting force can limit drilling in the loosening direction to a certain extent, when the locknut 202 is subjected to high-frequency vibration again, the locknut 202 can have certain rotating force in the loosening direction, at the moment, due to the fact that the existing mutual friction force and the abutting force exist between the set nut 201 and the locknut 202, the locknut 202 can be limited to rotate in the loosening direction at the moment.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The anti-loosening screw for the opposite-top nut is characterized by comprising a stud (1) and a nut (2);
a first threaded part (3) and a second threaded part (4) are arranged on the stud (1), and the nut (2) is detachably connected with the first threaded part (3) and the second threaded part (4);
the rotating direction of the external thread on the first thread part (3) is opposite to that of the external thread on the second thread part (4);
one end of the first thread part (3) is connected with the stud (1), and the other end of the first thread part is connected with the second thread part (4);
the diameter of the first threaded portion (3) is larger than the diameter of the second threaded portion (4).
2. The opposite-top nut loose-proof screw according to claim 1, wherein the nut (2) comprises a fastening nut (201) and a loose-proof nut (202), the internal thread of the fastening nut (201) and the internal thread of the loose-proof nut (202) rotate in opposite directions, the fastening nut (201) is detachably connected with the first thread part (3), and the loose-proof nut (202) is detachably connected with the second thread part (4).
3. The counter nut anti-loose screw according to claim 2, characterized in that the external thread of the first thread portion (3) is a right-handed thread and the corresponding internal thread of the set nut (201) is a right-handed thread; the external thread of the second thread part (4) is a left-hand thread, and the corresponding internal thread of the locknut (202) is a left-hand thread.
4. The counter nut anti-loose screw according to claim 2, characterized in that the external thread of the first thread portion (3) is a left-hand thread and the corresponding internal thread of the set nut (201) is a left-hand thread; the external thread of the second thread part (4) is a right-hand thread, and the corresponding internal thread of the locknut (202) is a right-hand thread.
5. The counter nut anti-loose screw according to claim 2, characterized in that the dimensions of the nut opposite edges of the anti-loose nut (202) are greater than the diameter of the first threaded portion (3).
6. The counter nut lockscrew according to claim 2, characterized in that the locknut (202) is further provided with a threadless space (5), the threadless space (5) communicates with a threaded space on the locknut (202), and the threadless space (5) is provided at an end toward the first threaded portion (3).
7. The counter nut anti-loose screw according to claim 6, characterized in that the diameter of the threadless space (5) is greater than or equal to the diameter of the first threaded portion (3), and when the anti-loose nut (202) is screwed on the second threaded portion (4), the threadless space (5) is sleeved outside the first threaded portion (3).
8. The counter nut anti-loose screw according to claim 2, characterized in that the set nut (201) is screwed on the first threaded portion (3), and when the anti-loose nut (202) is screwed on the second threaded portion (4), the anti-loose nut (202) abuts against the set nut (201).
9. The anti-loose nut screw as claimed in any one of claims 2 to 8, further comprising a protective sleeve (6), wherein the protective sleeve (6) covers the anti-loose nut (202).
10. Counter nut anti-loose screw according to claim 1, characterized in that the first threaded portion (3) and the second threaded portion (4) are both arranged coaxially to the stud (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023122637.8U CN214146211U (en) | 2020-12-22 | 2020-12-22 | Opposite-top nut anti-loosening screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023122637.8U CN214146211U (en) | 2020-12-22 | 2020-12-22 | Opposite-top nut anti-loosening screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214146211U true CN214146211U (en) | 2021-09-07 |
Family
ID=77530051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023122637.8U Active CN214146211U (en) | 2020-12-22 | 2020-12-22 | Opposite-top nut anti-loosening screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214146211U (en) |
-
2020
- 2020-12-22 CN CN202023122637.8U patent/CN214146211U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202065313U (en) | Threaded fastener | |
| CN205064529U (en) | Interlocking locknut subassembly | |
| WO2023093738A1 (en) | Anti-loosening nut-gasket assembly | |
| CN108980179B (en) | Anti-loosening screw | |
| CN109899368A (en) | A kind of hezagon castle nut with self-locking function | |
| CN113669351A (en) | Anti-loosening thread pair | |
| CN214063514U (en) | Locknut composite set | |
| JP2012140985A (en) | Anchor mounting device for civil engineering and washer for anchor mounting device for civil engineering | |
| CN214146211U (en) | Opposite-top nut anti-loosening screw | |
| CN101922496A (en) | Bolt and bolt connecting structure thereof | |
| KR20180043692A (en) | Non-release bolt and nut | |
| KR101513433B1 (en) | Magnetic bolt assembly with hight-tension | |
| WO2020083273A1 (en) | Anti-loosening, easy-open/close threaded fixing assembly and connecting structure | |
| CN201874955U (en) | Novel easy lock nut | |
| CN214247952U (en) | Anti-loose nut | |
| CN208619505U (en) | A kind of threaded components of difference screw pitch fastening | |
| CN112780657A (en) | Double-thread anti-loose bolt | |
| CN2706616Y (en) | Double screw thread lockbolt | |
| WO2009024093A1 (en) | A lockable and antirust bolt fastener | |
| CN209539772U (en) | A kind of antivibration check bolt nut assembly | |
| CN208845554U (en) | A kind of threaded components of fastened concentric | |
| CN2434471Y (en) | Integrated anti-loose antitheft nut | |
| JP3052547U (en) | Nut loosening stopper | |
| CN215370557U (en) | Double-thread anti-loose bolt | |
| CN214742659U (en) | Non-loose nut and fastener |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |