CN217271356U - Anti-loosening fastener - Google Patents
Anti-loosening fastener Download PDFInfo
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- CN217271356U CN217271356U CN202221276916.6U CN202221276916U CN217271356U CN 217271356 U CN217271356 U CN 217271356U CN 202221276916 U CN202221276916 U CN 202221276916U CN 217271356 U CN217271356 U CN 217271356U
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- bolt
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- fixing
- screw rod
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Abstract
The utility model provides an anti-loose fastener, which relates to the technical field of hardware fasteners and comprises a bolt, a fixed part, a fixed gasket and a first nut, wherein the fixed gasket is sequentially sleeved on the bolt; the fixing part comprises a second nut and a section, one or two sections are cut on one side or two sides of the tail of the screw rod of the bolt, and the nut is sleeved on the bolt, is close to the head of the bolt and is far away from the section of the screw rod; the shape and the size of the opening in the middle of the fixing gasket are matched with the cross section of the screw rod, so that the fixing gasket is fixed relative to the bolt; the first nut is far away from the head of the bolt, the surface of the first nut, which is in contact with the fixed gasket, is provided with at least 2 wedge-shaped inclined teeth, and the surface of the fixed gasket, which is in contact with the first nut, is provided with wedge-shaped grooves meshed with the wedge-shaped inclined teeth; the utility model discloses guarantee under high-frequency vibration, high temperature environment that the bolt does not take place not hard up, and compare its stress with the standard component and keep unchangeable.
Description
Technical Field
The utility model relates to a hardware fastening spare technical field, in particular to check fastener, concretely relates to bolt, nut one, resilient gasket and solid fixed shim.
Background
The conventional bolt has a plurality of anti-loosening modes, a bolt is usually adopted to penetrate through a nut and a screw rod to be fixed at one point to prevent the nut and the screw rod from sliding relatively so as to achieve the anti-loosening purpose, and an opposite-top double nut mode is further adopted so as to achieve the anti-loosening purpose and the like, and the anti-loosening mode of the bolt can easily cause the fastening part to slide or deform so as to cause the fastening part to loosen under specific use environments such as fastening of train sleepers and rails, locomotive vehicles, automobiles, tanks, armored vehicles, ships, excavators, shield machines, loaders, subways, high-speed rails, bridges, mining machinery, petroleum electric machinery, urban assembly type integrated construction, military aerospace, weaponry and the like which easily generate high-frequency vibration and high temperature; the other bolt anti-loosening mode is a one-off anti-loosening structure, and once the bolt is disassembled, the bolt is damaged and cannot be reused, so that the use cost is increased, and the bolt is not convenient to maintain.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can guarantee under high-frequency vibration, high temperature environment that the bolt does not take place not hard up, and compare the unchangeable locking fastener of its stress with the standard component.
The technical scheme of the utility model is realized like this:
a locking fastener comprises a bolt, a fixing part, a fixing gasket and a first nut, wherein the fixing gasket and the first nut are sequentially sleeved on the bolt;
the fixing part comprises a second nut and a section, one or two sections are cut on one side or two sides of the tail of the screw rod of the bolt, and the nut is sleeved on the bolt, is close to the head of the bolt and is far away from the section of the screw rod;
the shape and the size of an opening in the middle of the fixing gasket are matched with the cross section of the screw rod, so that the fixing gasket is fixed relative to the bolt;
the first nut is far away from the head of the bolt, the surface of the first nut, which is in contact with the fixed gasket, is provided with at least 2 wedge-shaped inclined teeth, and the surface of the fixed gasket, which is in contact with the first nut, is provided with wedge-shaped grooves meshed with the wedge-shaped inclined teeth.
Furthermore, the fixing part can be replaced by at least one vertical groove and a protrusion matched with the vertical groove, the vertical groove is arranged on the screw rod and is parallel to the axis of the screw rod, and the protrusion is arranged on the inner side of the fixing gasket.
Furthermore, the wedge-shaped helical teeth are uniformly distributed on one surface of the nut and are radial from the center to the outside.
Further, still include the elasticity gasket, the elasticity gasket cup joints in the bolt, set up in the one side that the fixed shim is close to the bolt head, the elasticity gasket has elasticity in order to support fixed shim and nut in close contact with.
Furthermore, the elastic gasket is a circular gasket, the circular gasket is provided with a gap, and two surfaces opposite to the gap are arranged in a staggered mode.
The utility model has the advantages that:
the utility model utilizes the self structure of the fastener, can effectively prevent the bolt and the nut from loosening under the conditions of high-frequency vibration, low-frequency vibration or irregular-frequency vibration and under the environments of high-temperature vibration, low-temperature vibration, high temperature or low temperature and the like, avoids causing major accidents, and has reusability; the second nut ensures that the stress of the fastener is consistent with that of the original standard part, and once the wedge-shaped inclined teeth on the surface of the first nut are screwed into the wedge-shaped grooves of the fixing gaskets, the wedge-shaped inclined teeth cannot be screwed out after the position of the fixing gaskets is limited by the fixing piece, so that the effect of never loosening is achieved; the vertical groove formed in the screw rod has little influence on the original stress of the bolt, and is matched with the bulge of the fixed gasket to fasten the fixed gasket on the bolt; the shape and size of the central hole of the fixing gasket are matched with the shape and size of the cross section of the screw rod so as to prevent the fixing gasket and the bolt from sliding or displacing; the annular gasket is provided with a gap and dislocation so as to ensure that the elastic gasket is more tightly contacted with the nut.
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 structural diagram of an embodiment of the present invention;
fig. 2 is a side view of a bolt according to an embodiment of the present invention;
fig. 3 is an elevation view of a bolt according to an embodiment of the present invention;
fig. 4 is a front view of a retaining washer according to an embodiment of the present invention;
FIG. 5 is a front view of the nut;
FIG. 6 is a front view of the elastomeric pad;
fig. 7 is a schematic structural diagram of another embodiment of the present invention;
fig. 8 is a side view of a bolt according to another embodiment of the present invention;
fig. 9 is an elevation view of a bolt according to another embodiment of the present invention;
fig. 10 is a front view of a fixing washer according to another embodiment of the present invention.
In the figure: 1-bolt, 11-section, 12-vertical groove, 2-fixed gasket, 21-wedge-shaped groove, 22-protrusion, 3-first nut, 31-wedge-shaped helical tooth, 4-second nut, 5-elastic gasket, 6-fixing piece and 7-gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 6, in one embodiment, the anti-loose fastener comprises a bolt 1, a fixing part, a fixing gasket 2 and a nut 3, wherein the fixing gasket 2 and the nut 3 are sleeved on the bolt 1 in sequence; the fixing part comprises a second nut 4 and a tangent plane 11, one or two tangent planes 11 are cut on one side or two sides of the tail part of the screw rod of the bolt 1, and the second nut 4 is sleeved on the bolt 1, is close to the head part of the bolt 1 and is far away from the tangent plane 11 of the screw rod; the shape and the size of a hole in the middle of the fixing gasket 2 are matched with the cross section of the screw rod, so that the fixing gasket 2 is fixed relative to the bolt 1; the first nut 3 is far away from the head of the bolt 1, the surface of the first nut 3, which is in contact with the fixing gasket 2, is provided with at least 2 wedge-shaped inclined teeth 31, and the surface of the fixing gasket 2, which is in contact with the first nut 3, is provided with wedge-shaped grooves 21 which are meshed with the wedge-shaped inclined teeth 31. The 2 wedge-shaped inclined teeth 31 can realize a fastening effect, but the more the wedge-shaped inclined teeth 31 are, the more precise the bolt fastening piece is, the deeper the tooth mouth of the wedge-shaped inclined teeth 31 is, and the less the first nut 3 is easy to rotate; the first nut 3 is in a four-corner or hexagonal shape, the central hole of the first nut is provided with internal threads, and the central hole diameter and the internal threads are matched with the screw rod and the external threads of the bolt 1. The second nut 4 ensures that the stress of the fastener is consistent with that of a national bolt standard component, and after the position of the fixing gasket 2 is limited by the fixing component, the wedge-shaped inclined teeth 31 on the surface of the first nut 3 cannot be screwed out once being screwed into the wedge-shaped grooves 21 of the fixing gasket 2, so that the effect of never loosening is achieved. The utility model discloses guarantee under high-frequency vibration, high temperature environment that the bolt does not take place not hard up and have reusability, its production technology can improve the manufacturing that production facility can realize this product a little on the basis of the ordinary bolt production technology of original production and processing, convenient to popularize and apply.
Specifically, the shape and size of the middle opening of the fixing gasket 2 are matched with the cross section of the screw rod, so that the fixing gasket 2 and the bolt 1 are prevented from sliding or displacing.
Referring to fig. 5, preferably, the wedge-shaped helical teeth 31 are uniformly distributed on the surface of the first nut 3 and are radial from the center to the outside.
Referring to fig. 6, preferably, the fastening device further includes an elastic gasket 5, the elastic gasket 5 is sleeved on the bolt 1 and disposed on one side of the fixing gasket 2 close to the head of the bolt 1, and the elastic gasket 5 has elasticity to support the fixing gasket 2 to be in close contact with the first nut 3. The elastic washer 5 has elasticity to support the fixing washer 2 to be in close contact with the first nut 3.
Referring to fig. 6, preferably, the elastic gasket 5 is a circular gasket having a gap, and two opposite surfaces of the gap are disposed in a staggered manner, so as to ensure that the elastic gasket 5 has elasticity to support the fixed gasket 2 to be in contact with the first nut 3 more tightly.
In another preferred embodiment, illustrated in figures 7 to 10, the fixing means can be replaced by at least one vertical slot 12 and a projection 22 cooperating with the vertical slot 12, the vertical slot 12 being provided on the screw, parallel to the axis of the screw, the projection 22 being provided on the inside of the fixing pad 2. The vertical groove 12 formed on the screw has less influence on the stress of the original standard part of the bolt 1, and is matched with the bulge 22 of the fixed gasket 2 to fasten the fixed gasket 2 on the bolt 1. In this embodiment, a gasket 7 may be further disposed between the fixing member 6 and the circular gasket, so as to prevent the fixing member 6 from being damaged by the circular gasket disposed in a staggered manner.
In the specific installation use in-process of an embodiment, screw up first two 4 of nuts, two 4 of nuts produce effort extrusion mounting 6, until fastening completely, two 4 of nuts fall into on the complete external screw thread of screw rod this moment, when screwing up nut 3 afterwards, nut 3 produces effort extrusion mounting pad 2, and then drives mounting pad 2 extrusion elastic gasket 5, and further drive elastic gasket 5 extrusion nut two 4, until fastening completely. When the bolt 1 or the nut 3 is loosened, the wedge-shaped inclined teeth 31 of the nut 3 are meshed with the wedge-shaped grooves 21 of the fixing gasket 2 to generate reverse acting force so as to ensure that the nut 3 cannot slide or move to cause looseness; the size of 2 centre holes of fixation gasket, the cross section phase-match of shape and screw rod, because the rotation of fixation gasket 2 is fixed to the tangent plane 11 structure of screw rod, and added elastic gasket 5 between fixation gasket 2 and second nut 4 in order to guarantee that fixation gasket 2 can't take place the displacement along the screw rod, like this the screw rod, elastic gasket 5, fixation gasket 2 and nut 3 form an unable not hard up whole to 6 locks of fixed part that need fix, thereby guarantee that bolt 1 or nut 3 can not take place not hard up thereby lead to droing to cause the accident.
In another embodiment, during installation and use, when the bolt 1 or the nut 3 is tightened, the nut 3 generates an acting force to press the fixing gasket 2, so as to drive the fixing gasket 2 to press the elastic gasket 5 and the washer 7, and further drive the washer 7 to press the fixing member 6 until the fixing member is completely fastened. The size and the shape of the central hole of the fixed gasket 2 are matched with the cross section of the screw rod, and the bulge 22 of the fixed gasket 2 is sleeved in the vertical groove 12 of the screw rod to firmly fix the fixed gasket 2 on the screw rod and prevent the fixed gasket from rotating. The structural functions of the other components are identical to those of the above-described embodiment.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A check fastener characterized by: the bolt fixing device comprises a bolt, a fixing part, a fixing gasket and a first nut, wherein the fixing gasket and the first nut are sequentially sleeved on the bolt;
the fixing part comprises a second nut and a section, one or two sections are cut on one side or two sides of the tail of the screw rod of the bolt, and the nut is sleeved on the bolt, is close to the head of the bolt and is far away from the section of the screw rod;
the shape and the size of an opening in the middle of the fixing gasket are matched with the cross section of the screw rod, so that the fixing gasket is fixed relative to the bolt;
the first nut is far away from the head of the bolt, the surface of the first nut, which is in contact with the fixed gasket, is provided with at least 2 wedge-shaped inclined teeth, and the surface of the fixed gasket, which is in contact with the first nut, is provided with wedge-shaped grooves meshed with the wedge-shaped inclined teeth.
2. A check fastener as defined in claim 1, wherein: the fixing part can be replaced by at least one vertical groove and a protrusion matched with the vertical groove, the vertical groove is formed in the screw rod and is parallel to the axis of the screw rod, and the protrusion is arranged on the inner side of the fixing gasket.
3. A check fastener as claimed in claim 1 or 2, wherein: the wedge-shaped helical teeth are uniformly distributed on one surface of the nut and are radial from the center to the outside.
4. A check fastener as defined in claim 3, wherein: the bolt is characterized by further comprising an elastic gasket, the elastic gasket is sleeved on the bolt and arranged on one side, close to the head of the bolt, of the fixed gasket, and the elastic gasket has elasticity to support the fixed gasket to be in close contact with the nut.
5. An anti-loose fastener as defined in claim 4, wherein: the elastic gasket is a circular gasket, the circular gasket is provided with a gap, and two surfaces opposite to the gap are arranged in a staggered mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221276916.6U CN217271356U (en) | 2022-05-26 | 2022-05-26 | Anti-loosening fastener |
| PCT/CN2023/083766 WO2023197850A1 (en) | 2022-04-11 | 2023-03-24 | Anti-loosening fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221276916.6U CN217271356U (en) | 2022-05-26 | 2022-05-26 | Anti-loosening fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217271356U true CN217271356U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221276916.6U Active CN217271356U (en) | 2022-04-11 | 2022-05-26 | Anti-loosening fastener |
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| Country | Link |
|---|---|
| CN (1) | CN217271356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023197850A1 (en) * | 2022-04-11 | 2023-10-19 | 陈榕 | Anti-loosening fastener |
-
2022
- 2022-05-26 CN CN202221276916.6U patent/CN217271356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023197850A1 (en) * | 2022-04-11 | 2023-10-19 | 陈榕 | Anti-loosening fastener |
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