CN111173828A - Anti-loosening structure and screw fastener with same - Google Patents
Anti-loosening structure and screw fastener with same Download PDFInfo
- Publication number
- CN111173828A CN111173828A CN202010193568.5A CN202010193568A CN111173828A CN 111173828 A CN111173828 A CN 111173828A CN 202010193568 A CN202010193568 A CN 202010193568A CN 111173828 A CN111173828 A CN 111173828A
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- Prior art keywords
- stop
- stop ring
- nut
- snap ring
- screw
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- 238000003466 welding Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 description 5
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model provides a locking structure and have screw fastener of locking structure, relate to fastener technical field, this locking structure includes snap ring female member and snap ring male member, the hole in the middle of the snap ring female member supplies the screw to pass, the bottom surface equipartition of snap ring female member has round skewed tooth, many stop pins are inserted vertically on the snap ring male member, still movable mounting has a stop block that one end is outstanding in the surface of snap ring male member in the snap ring male member, place snap ring female member on the snap ring male member, the stop block meshes with the skewed tooth mutually, forward rotation snap ring female member, the stop block will pass on the skewed tooth, reverse rotation snap ring female member, the mutual chucking between stop block and the skewed tooth makes the snap ring female member unable reversal, can make it withdraw from between the skewed tooth through rotating the stop block, and then can make the snap ring female member reverse rotation on the snap ring male member. The anti-loosening structure and the screw fastener with the anti-loosening structure are simple in structure and good in anti-loosening performance.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to an anti-loosening structure and a screw fastener with the anti-loosening structure.
Background
The bolt and the nut are the most common fasteners and are generally applied to various fields, the bolt and the nut are connected by threads, and the self-locking capacity between the bolt and the nut comes from the matching of internal threads and external threads.
In a relatively stable place, the matching between the bolt and the nut is relatively fixed, and the loosening condition cannot easily occur, but in some special use environments, such as the use in a vibration environment, the use in a strong motion environment, the use in equipment with high assembly requirements and the use in other special environments, the self-locking capability after the bolt is in threaded connection is not enough to maintain the stability of the bolt, in life, more common in large vehicles, bolts are needed to be used for connecting and fixing among a plurality of parts on the vehicles (because the application positions are relatively fixed, the specifications of the bolts are uniform, so the bolt fasteners can be produced in batches), the shaking ground can cause the shaking of the vehicle body during the driving process of the large vehicles, in a long term, the loosening condition can occur in the connection between the bolt and the nut, and the loosening of the fasteners can directly influence the normal work of the relevant parts of the vehicles, thereby easily causing malfunction.
Disclosure of Invention
The invention aims to provide an anti-loosening structure with simple structure and good anti-loosening performance and a screw fastener with the anti-loosening structure.
In order to solve the technical problems, the invention adopts the following technical scheme: a locking structure comprises a locking ring female part and a locking ring male part, wherein a hole in the middle of the locking ring female part is used for a screw to pass through, a circle of helical teeth are uniformly distributed on the bottom surface of the locking ring female part, a plurality of stop pins are vertically inserted in the locking ring male part, a stop block with one end protruding out of the surface of the locking ring male part is movably mounted in the locking ring male part, the locking ring female part is placed on the locking ring male part and is meshed with the helical teeth, the locking ring female part is rotated in a forward direction, the stop block slides on the helical teeth and rotates in a reverse direction, the locking ring female part is clamped with the helical teeth, the locking ring female part cannot rotate in a reverse direction, the stop block can be withdrawn from the helical teeth by rotating the stop block, and the locking ring female part can rotate in the reverse direction on the locking ring male part.
Furthermore, a stopping opening is formed in the stopping ring male piece, a shifting rod is installed in the stopping opening along the diameter direction of the stopping ring male piece, the tail end of the shifting rod extends out of the stopping ring male piece, the stopping block is located in the stopping opening and fixed on the shifting rod, an elastic piece is installed on the shifting rod, the shifting rod is rotated, the stopping block rotates to be hidden in the stopping opening from the surface protruding out of the stopping ring male piece, the shifting rod is released, and the shifting rod drives the stopping block to return together under the action of the elastic piece.
Furthermore, the whole deflector rod is in a 7 shape, and the elastic piece on the deflector rod is a torsion spring.
Furthermore, the number of the stop pins is three, and the three stop pins are uniformly distributed on the stop ring male piece.
Preferably, the stop is butterfly shaped.
As another aspect of the present invention, a screw fastener with an anti-loosening structure includes a screw and a nut, and further includes the anti-loosening structure, the snap ring female member is connected below the nut, a hole in the middle of the snap ring female member is aligned with a threaded hole of the nut, the snap ring male member is sleeved on the screw, and rotating the nut can drive the snap ring female member to rotate, or rotating the snap ring female member can drive the nut to rotate.
Further, the stop ring female part and the nut are fixed together in a welding mode.
Or a nut groove is formed downwards from the top of the stop ring female part, and the stop ring female part is in clearance fit with the nut through the nut groove.
Further, the external shape of the stop ring female member is circular, and the depth of the nut groove is 1/3-1/2 of the thickness of the nut.
Or the external shape of the stop ring female piece is hexagonal, and the depth of the nut groove is greater than or equal to the thickness of the nut.
The anti-loosening structure provided by the invention has a simple structure and a wide application range, and the size of the anti-loosening structure can be customized according to the size of the commercially available screws and nuts, so that the screws and nuts with different specifications on the market can be matched with the anti-loosening structure with corresponding specifications. When the screw fastener with the anti-loosening structure provided by the invention is connected with a workpiece, a screw is inserted into the workpiece, then the male stop ring piece is sleeved on the screw, the stop pin on the male stop ring piece is inserted into the pin hole which is arranged in advance on the workpiece, finally the nut and the female stop ring piece which are connected into a whole are screwed on the screw together, the stop block on the male stop ring piece is meshed with the helical teeth on the female stop ring piece, under the state, the nut (or the female stop ring piece) is rotated in the forward direction, the stop block slides over the helical teeth, and the nut (or the female stop ring piece) is rotated in the reverse direction, because the stop block and the helical teeth are clamped with each other, the nut (or the female stop ring piece) cannot be reversed, therefore, after the screw fastener with the anti-loosening structure is used for connecting the workpiece, the connection between the workpieces is very firm, even if the workpiece is in the environments such as vibration or strong movement, because the stop block can effectively prevent the female part of the stop ring from reversely rotating, the nut and the screw basically cannot reversely rotate, and the screw cannot loosen. Obviously, the screw fastener with the anti-loosening structure has good anti-loosening performance.
Drawings
Fig. 1 is a schematic view showing the overall structure of a screw fastener having a loosening prevention structure in embodiment 1;
fig. 2 is a schematic view showing the overall structure of a screw fastener having a loosening prevention structure according to embodiment 2;
FIG. 3 is a schematic view showing the entire structure of a screw fastener having a loosening prevention structure according to embodiment 3;
fig. 4 is a schematic view showing a use state of the screw fastener having the anti-loosening structure in embodiment 1 or embodiment 2.
The reference signs are:
a-1 workpiece and B-2 workpiece
1-screw 2-nut 3-stop ring female part
4-stop ring male part 5-stop pin 6-stop block
7-deflector rod
2 a-screw hole
3 a-hole 3 b-helical teeth 3 c-nut groove
4 a-stop opening.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.
Example 1
As shown in fig. 1, a screw fastener with an anti-loosening structure comprises a screw 1, a nut 2 and an anti-loosening structure, wherein the anti-loosening structure comprises a snap ring female part 3 welded below the nut 2 and a snap ring male part 4 sleeved on the screw 1, a hole 3a in the middle of the snap ring female part 3 is right opposite to a threaded hole 2a of the nut 2 and can be penetrated by the screw 1, the screw 1 can be sequentially screwed into the snap ring female part 3 and the nut 2 through the hole 3a and the threaded hole 2a, a circle of inclined teeth 3b are uniformly distributed on the bottom surface of the snap ring female part 3, and a plurality of snap pins 5 are vertically inserted into the snap ring male part 4, and in the invention, the snap pins 5 are arranged to aim at: when a workpiece needs to be fastened by using a screw fastener, the stop ring male part 4 is sleeved on the screw 1, and the stop pin 5 needs to be inserted into the stop ring male part 4 and also needs to be inserted into the workpiece to be fastened (a pin hole matched with the stop pin 5 should be formed in the workpiece), so that the stop ring male part 4 and the workpiece to be fastened can be effectively prevented from rotating relatively, the number of the stop pins 5 is not limited, but preferably three, and the three stop pins 5 are preferably uniformly distributed on the stop ring male part 4. The male stop ring part 4 is also movably provided with a stop block 6 which is obliquely arranged, one end of the stop block 6 which is obliquely upwards protrudes out of the surface of the male stop ring part 4, the nut 2 and the female stop ring part 3 which are connected together are placed on the male stop ring part 4 together, the stop block 6 is meshed with the helical teeth 3b, the nut 2 is rotated in the forward direction, the stop block 6 slides over the helical teeth 3b, the nut 2 is rotated in the reverse direction, the stop block 6 and the helical teeth 3b are clamped with each other, so that the nut 2 cannot be reversely rotated, the stop block 6 can be withdrawn from the helical teeth 3b by rotating, and the nut 2 can be further rotated in the reverse direction relative to the male stop ring part 4.
Example 2
A screw fastener having a loosening prevention structure, as shown in fig. 2, the present embodiment 2 is different from the embodiment 1 in that: the connection relationship between the snap ring female member 3 and the nut 2, specifically, in this embodiment 2, the snap ring female member 3 is circular in shape, a nut groove 3c is formed downward from the top of the snap ring female member 3, the depth of the nut groove 3c is 1/3-1/2 of the thickness of the nut 2, the snap ring female member 3 is in clearance fit with the nut 2 through the nut groove 3c, and the nut 2 can be rotated by a wrench to drive the snap ring female member 3 to be screwed on the screw 1 together.
Example 3
A screw fastener having a loosening prevention structure, as shown in fig. 3, the present embodiment 3 is different from the embodiment 1 in that: specifically, in this embodiment 3, the shape of the snap ring female member 3 is hexagonal, a nut groove 3c is formed downward from the top of the snap ring female member 3, the depth of the nut groove 3c is equal to or greater than the thickness of the nut 2, the snap ring female member 3 is in clearance fit with the nut 2 through the nut groove 3c, and the snap ring female member 3 can drive the nut 2 to be screwed on the screw 1 together by rotating the snap ring female member 3 with a wrench.
It should be noted that, in the practical application, the screw fastener of embodiment 1 or the screw fasteners of embodiment 2 and embodiment 3 are simple and convenient in production and use, but relatively speaking, the anti-loosening structure of embodiment 2 and embodiment 3 is more convenient when being combined with commercially available screws and nuts, because after the matched snap ring female member 3 and snap ring male member 4 are added according to the specifications of commercially available screws and nuts, the snap ring female member 3 and nut are assembled together by welding in embodiment 1, and the nut can be directly pressed into the nut groove 3c of the snap ring female member 3 in embodiments 2 and 3 to achieve the assembly of both, which is more convenient.
In the prior art, there are various mounting manners of the stopper 6 and the stopper ring male 4 in the above embodiments 1 to 3, and the following manner is preferable in this embodiment: the stop ring male piece 4 is provided with a stop opening 4a, the stop block 6 is obliquely arranged in the stop opening 4a and is fixed on a 7-shaped shift lever 7, the front end of the shift lever 7 penetrates through the middle part of the stop block 6 from the edge of the stop ring male piece 4 along the diameter direction of the stop ring male piece 4 and is fixed in the stop ring male piece 4, the tail end of the shift lever 7 extends out of the stop ring male piece 4, and the shift lever 7 is provided with a torsion spring or other elastic pieces. It should be noted that the shape of the stop opening 4a is designed according to the shape of the stop block 6, and it is necessary to ensure that the stop block 6 can rotate flexibly in the stop opening 4a, for example: the stop block 6 may be butterfly shaped and the stop mouth 4a may be designed in the simplest square mouth configuration. In this embodiment, by rotating the end of the shift lever 7, the stop block 6 is driven to rotate, so that the stop block 6 is rotated from the surface protruding out of the stop ring male 4 to be hidden in the stop opening 4a, and by releasing the shift lever 7, the shift lever 7 will drive the stop block 6 to return together under the action of the elastic member, and one end of the stop block 6 will protrude out of the stop ring male 4 again.
In the case of connecting two workpieces (hereinafter, workpiece a and workpiece B1) by using the screw fastener with the anti-loosening structure in the above embodiment, as shown in fig. 4, the screw 1 is inserted into the workpiece B2 and the workpiece a 1 in sequence, then the male snap ring 4 is sleeved on the screw 1, and the stop pin 5 on the male snap ring 4 is inserted into the pre-opened pin hole of the workpiece a 1, and finally the nut 2 and the female snap ring 3 which are connected into a whole are screwed on the screw 1, when the nut 2 is screwed in place, the stop block 6 on the male snap ring 4 is engaged with the helical teeth 3B on the female snap ring 3, as mentioned above, the nut 2 (or the female snap ring 3) is rotated forwardly by a wrench in a state that the stop block 6 is engaged with the helical teeth 3B, the stop block 6 slides over the helical teeth 3B, and the nut 2 (or the female snap ring 3) is rotated reversely, because the stop block 6 and the helical teeth 3B are mutually clamped, the nut 2 (or the stop ring female part 3) cannot be reversed, and therefore, after the nut 2 (or the stop ring female part 3) is fastened in the above manner, the connection between the No. 1 workpiece A and the No. 2 workpiece B is very firm, even if the No. 1 workpiece A and the No. 2 workpiece B are in environments such as vibration or strong motion, the reverse rotation of the nut 2 (or the stop ring female part 3) can be effectively prevented by the stop block 6, so that the reverse rotation of the screw 1 basically cannot occur, namely the screw 1 cannot be loosened. Obviously, the screw fastener with the anti-loosening structure in the embodiment has good anti-loosening performance.
After the screw fastener with the anti-loosening structure in the above embodiment fastens a workpiece, since the stop block 6 locks the stop ring female member 3 in the reverse direction, when the screw fastener needs to be disassembled, the stop block 6 must be withdrawn from between the helical teeth 3b of the stop ring female member 3, and as can be seen from the above, the stop block 6 in the present invention can be rotated, so that the driver 7 is rotated to drive the stop block 6 to rotate together, the stop block 6 can be withdrawn from between the helical teeth 3b of the stop ring female member 3, thereby releasing the reverse locking of the stop block 6 to the stop ring female member 3, and further, the stop ring female member 3 and the nut 2 are rotated out from the screw 1 in the reverse direction.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (10)
1. A locking structure that moves which characterized in that: the screw locking device comprises a stop ring female part (3) and a stop ring male part (4), wherein a hole (3 a) in the middle of the stop ring female part (3) is used for a screw (1) to pass through, a circle of helical teeth (3 b) are uniformly distributed on the bottom surface of the stop ring female part (3), a plurality of stop pins (5) are vertically inserted on the stop ring male part (4), a stop block (6) with one end protruding out of the surface of the stop ring male part (4) is movably mounted in the stop ring male part (4), the stop ring female part (3) is placed on the stop ring male part (4), the stop block (6) is meshed with the helical teeth (3 b) and rotates the stop ring female part (3) in the forward direction, the stop block (6) slides on the helical teeth (3 b) to rotate the stop ring female part (3) in the reverse direction, the stop block (6) and the helical teeth (3 b) are mutually clamped, so that the stop ring female part (3) cannot rotate reversely, the stop block (6) can be rotated to withdraw from the helical teeth (3 b), and the stop ring female part (3) can be rotated reversely on the stop ring male part (4).
2. The anti-loosening structure according to claim 1, wherein: the stop ring male piece (4) is provided with a stop opening (4 a), a shifting rod (7) is arranged in the stop opening (4 a) along the diameter direction of the stop ring male piece (4), the tail end of the shifting rod (7) extends out of the stop ring male piece (4), the stop block (6) is positioned in the stop opening (4 a) and is fixed on the shifting rod (7), an elastic piece is arranged on the shifting rod (7), the shifting rod (7) is rotated, the stop block (6) rotates to be hidden in the stop opening (4 a) from the surface protruding out of the stop ring male piece (4), the shifting rod (7) is released, and the shifting rod (7) drives the stop block (6) to return together under the action of the elastic piece.
3. The anti-loosening structure according to claim 2, wherein: the shifting lever (7) is integrally 7-shaped, and an elastic piece on the shifting lever (7) is a torsion spring.
4. The anti-loosening structure according to claim 3, wherein: the number of the stop pins (5) is three, and the three stop pins (5) are uniformly distributed on the stop ring male piece (4).
5. The anti-loosening structure according to claim 4, wherein: the stop block (6) is butterfly-shaped.
6. A screw fastener with an anti-loosening structure comprises a screw (1) and a nut (2), and is characterized in that: the anti-loosening structure comprises a female stop ring element (3) connected below a nut (2) and a hole (3 a) in the middle of the female stop ring element (3) opposite to a threaded hole (2 a) of the nut (2), wherein a male stop ring element (4) in the anti-loosening structure is sleeved on the screw (1), and the female stop ring element (3) can be driven to rotate by rotating the nut (2) or the nut (2) can be driven to rotate by rotating the female stop ring element (3).
7. The screw fastener with the anti-loosening structure according to claim 6, wherein: the stop ring female part (3) and the nut (2) are fixed together in a welding mode.
8. The screw fastener with the anti-loosening structure according to claim 6, wherein: a nut groove (3 c) is formed downwards from the top of the stop ring female part (3), and the stop ring female part (3) is in clearance fit with the nut (2) through the nut groove (3 c).
9. The screw fastener with the anti-loosening structure according to claim 8, wherein: the stop ring female part (3) is circular in shape, and the depth of the nut groove (3 c) is 1/3-1/2 of the thickness of the nut (2).
10. The screw fastener with the anti-loosening structure according to claim 8, wherein: the stop ring female part (3) is hexagonal in shape, and the depth of the nut groove (3 c) is greater than or equal to the thickness of the nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193568.5A CN111173828A (en) | 2020-03-18 | 2020-03-18 | Anti-loosening structure and screw fastener with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193568.5A CN111173828A (en) | 2020-03-18 | 2020-03-18 | Anti-loosening structure and screw fastener with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173828A true CN111173828A (en) | 2020-05-19 |
Family
ID=70653433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010193568.5A Pending CN111173828A (en) | 2020-03-18 | 2020-03-18 | Anti-loosening structure and screw fastener with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173828A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145531A (en) * | 2020-09-03 | 2020-12-29 | 海洋动力(海南自贸区)新能源科技有限公司 | Stopping locknut |
| GB2601631A (en) * | 2020-12-03 | 2022-06-08 | Mcloughlin Peter | A locking device |
-
2020
- 2020-03-18 CN CN202010193568.5A patent/CN111173828A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145531A (en) * | 2020-09-03 | 2020-12-29 | 海洋动力(海南自贸区)新能源科技有限公司 | Stopping locknut |
| WO2022047965A1 (en) * | 2020-09-03 | 2022-03-10 | 海洋动力(海南自贸区)新能源科技有限公司 | Anti-retreat lock nut |
| GB2601631A (en) * | 2020-12-03 | 2022-06-08 | Mcloughlin Peter | A locking device |
| US11692583B2 (en) | 2020-12-03 | 2023-07-04 | Peter MCLOUGHLIN | Locking device |
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