CN212377087U - Clamping-pad locking type anti-loosening nut - Google Patents
Clamping-pad locking type anti-loosening nut Download PDFInfo
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- CN212377087U CN212377087U CN202022100360.2U CN202022100360U CN212377087U CN 212377087 U CN212377087 U CN 212377087U CN 202022100360 U CN202022100360 U CN 202022100360U CN 212377087 U CN212377087 U CN 212377087U
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- elastic sheet
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- locking elastic
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Abstract
The anti-loosening nut comprises a nut body, an inner threaded hole is formed in the nut body, a groove is formed in the lower end of the nut body and communicated with the inner threaded hole, the inner diameter of the groove is larger than that of the inner threaded hole, triangular oblique teeth are uniformly distributed on the upper end face of the groove, one side of each oblique tooth is an oblique guide surface, the other side of each oblique tooth is a blocking surface, an oblique flared opening is formed in the inner wall of the lower opening of the groove, a C-shaped locking elastic sheet is arranged in the oblique flared opening, the outer diameter of the locking elastic sheet is smaller than that of the oblique flared opening, the outer diameter of the locking elastic sheet is larger than that of the groove, inner teeth are formed in the inner wall of the locking elastic sheet, an opening is formed in the locking elastic sheet, one end of the locking elastic sheet gradually inclines upwards, a locking straight surface is formed in the.
Description
Technical Field
The utility model relates to a nut especially relates to the locking nut that moves of card pad locking formula, mainly uses in fields such as aerospace, transportation motor car, machine tool, agricultural field, mould, shipping boats and ships.
Background
The nut is also called a nut, and is mainly in threaded fit with a screw (a threaded rod) to play a role in fastening assembled components. Ordinary nut receives vibrations or service life to have appeared becoming flexible on the part of assembly easily for a long time, and the part that leads to the assembly fastens insecurely, appears the potential safety hazard. Therefore, people invented the anti-loosening nut, such as Chinese invention patent 201910565066, the patent name of which is "a metal locking anti-skidding anti-loosening nut", which comprises a nut body and an anti-skidding wedge-shaped block, the screw cap body is internally provided with a screw cavity at the center, the screw cavity penetrates through the upper end and the lower end of the screw cap body, the nut body is also internally provided with an anti-skid wedge-shaped block sliding cavity which can be matched with the anti-skid wedge-shaped block, the anti-skid wedge-shaped block sliding cavity is communicated with the thread cavity, the anti-skid wedge-shaped block is arranged in the anti-skid wedge-shaped block sliding cavity, it is through setting up the antiskid wedge with nut body inside, can utilize the antiskid wedge to hold the bolt tightly after the nut is screwed up, improves the frictional force between bolt and the nut, strengthens the locking performance of nut, reduces the not hard up possibility of nut, reduces external vibrations and to the influence of nut fastening effect, but the shortcoming that this structure exists is: when the screw cap is gradually screwed down, the anti-skid wedge block is gradually pushed into the anti-skid wedge block sliding cavity, and the holding force of the anti-skid wedge block on the bolt is gradually increased, so that the force required by people for screwing the screw cap is also increased, the screw cap is screwed down more difficultly, and people cannot accurately master the force required by screwing the screw cap; one side of the anti-slip wedge-shaped block is a right-angle long edge, the surface of the anti-slip wedge-shaped block is a smooth surface, the right-angle long edge of the smooth surface is used for tightly holding the bolt to improve the friction force between the bolt and the nut, the reliability of tight holding is poor, looseness still occurs after long-term use, and the anti-looseness performance is poor; and thirdly, a plurality of anti-slip lines are arranged at the lower end of the skirt edge, the anti-slip lines are in contact with the surface of the assembled workpiece, the friction force between the anti-slip lines and the surface of the workpiece is increased, if the surface of the workpiece is subjected to heat hardening treatment, the hardness is higher and smooth, the anti-slip lines cannot be clamped into the surface of the workpiece, and the anti-slip effect cannot be achieved.
Disclosure of Invention
The utility model aims at overcoming the shortcoming that prior art exists, provide a nut and screw up the back, it is reliable to the screw-lock, prevent the locking nut that moves of the not hard up card pad locking formula of nut.
The utility model discloses the locking nut that moves of card pad locking formula technical scheme is: the nut comprises a nut main body, an inner screw hole is formed in the nut main body, a groove is formed in the lower end of the nut main body, the groove is communicated with the inner screw hole, the inner diameter of the groove is larger than that of the inner screw hole, triangular oblique teeth are uniformly distributed on the upper end surface of the groove, one side of each oblique tooth is an oblique guide surface, the other side of each oblique tooth is a blocking surface, an oblique flaring is formed in the inner wall of the lower opening of the groove, a C-shaped locking elastic sheet is arranged in the oblique flaring, the outer diameter of the locking elastic sheet is smaller than that of the oblique flaring, the outer diameter of the locking elastic sheet is larger than that of the groove, inner teeth are formed in the inner wall of the locking elastic sheet, an opening is formed in the locking elastic sheet, one end of the locking elastic sheet gradually inclines upwards.
The utility model discloses a jam locking type anti-loosening nut, when the nut main body is used for fastening assembly, firstly, a C-shaped locking elastic sheet is sleeved on a screw (screw rod), the inner diameter of the locking elastic sheet is slightly larger than or equal to the outer diameter of the screw, then the nut main body is sleeved on the screw (screw rod), an inner screw hole in the nut main body is rotationally matched with an outer screw thread of the screw, the nut main body is gradually screwed downwards through the inner screw hole and the outer screw thread, when an inclined expanding opening at the lower opening of a groove is contacted with the upper end of the locking elastic sheet, and the other side of the locking elastic sheet is propped against the surface of a workpiece needing to be assembled and fixed, because the inner diameter of an inclined expanding opening part is larger than the outer diameter of the locking elastic sheet, the outer diameter of the locking elastic sheet is larger than the inner diameter of the groove, the nut main body is continuously screwed by a wrench at the, the locking shell fragment contracts inwards gradually, when the external diameter of locking shell fragment is unanimous with the internal diameter of recess, the locking shell fragment blocks gradually in the recess, the internal tooth and the screw of locking shell fragment inner wall are tightened (i.e. the internal tooth is pricked into the screw thread of screw) this moment, increase the locking degree between locking shell fragment and the screw, and when the nut main part is screwed up inwards gradually, the locking straight face of the ascending locking one end of locking shell fragment slope contacts with the inclined guide face of the inclined tooth on the recess, the locking straight face moves along the inclined guide face, can not be obstructed, until the nut main part is screwed up completely, if will reverse the nut main part of twisting out or nut main part receive the vibration, because the fender face of the inclined tooth on the recess upper end of nut main part contacts with the locking straight face of locking shell fragment, and the internal tooth of locking shell fragment is tightened again with the screw, make the nut main part unable counter rotation.
The utility model discloses locking nut that moves of card pad locking formula, the nut main part outer wall system that is located recess one end have convex shirt rim. Because the internal diameter of the groove position is larger, the size of the nut body at the position is increased, and the structural strength of the position is improved by adopting the convex skirt.
The thread of the inner screw hole is a forward thread or an inverse thread. The inner screw hole can be made into a forward thread or a reverse thread according to requirements, and if the reverse thread is made, the directions of the locking straight surfaces of the inner teeth and the locking elastic sheet are correspondingly and symmetrically changed.
Depth D of the groove1Thickness D larger than locking spring2. Because one end of the locking elastic sheet is inclined upwards gradually, and the locking straight surface at the inclined upwards end is matched with the inclined teeth at the upper end of the groove, the depth of the groove needs to be larger than the thickness of the locking elastic sheet, and the locking elastic sheet is prevented from being flattened when the nut main body is screwed down.
The upper end of the outer wall of the locking elastic sheet is provided with an inclined plane, and the inclined plane is matched with the inclined flaring. The inclined plane is matched with the inclined flaring, so that the locking elastic sheet can be extruded, and the contraction of the locking elastic sheet can be guided.
Drawings
Fig. 1 is a schematic structural view of the clamp pad locking type anti-loosening nut of the present invention;
FIG. 2 is a schematic view of the structure of the nut body in a state of being compressed and locked after being screwed;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a schematic top view of the locking spring;
fig. 5 is a schematic structural view of the state that the nut body is screwed down and presses the locking elastic sheet to contract inwards to match with the screw.
Detailed Description
The utility model relates to a clamp pad locking type anti-loose nut, as shown in figures 1-5,the nut comprises a nut body 1, an inner threaded hole 2 is formed in the nut body, a groove 3 is formed in the lower end of the nut body, the groove is communicated with the inner threaded hole, the inner diameter of the groove is larger than that of the inner threaded hole, triangular oblique teeth 4 are uniformly distributed on the upper end face of the groove, one side of each oblique tooth is an oblique guide surface 5, the other side of each oblique tooth is a blocking surface 6, an oblique flared opening 7 is formed in the inner wall of the lower opening of the groove, a C-shaped locking elastic sheet 8 is arranged in the oblique flared opening, the outer diameter of the locking elastic sheet is smaller than that of the oblique flared opening 7, the outer diameter of the locking elastic sheet is larger than that of the groove 3, inner teeth 9 are formed in the inner wall of the locking elastic sheet, an opening 10 is formed in the locking elastic sheet, one end of the locking elastic sheet gradually inclines upwards, a locking straight surface 11. When the nut body 1 is used for fastening and assembling, firstly, the C-shaped locking elastic sheet 8 is sleeved on a screw (screw rod), the inner diameter of the locking elastic sheet is slightly larger than or equal to the outer diameter of the screw, then the nut body 1 is sleeved on the screw (screw rod), an inner screw hole 2 in the nut body is in rotary fit with the external thread of the screw, the nut body is gradually screwed downwards through the inner screw hole and the external thread, when an inclined flared opening 7 at the lower opening of a groove 3 is contacted with the upper end of the locking elastic sheet 8 and the other side of the locking elastic sheet is propped against the surface of a workpiece to be assembled and fixed, as the inner diameter of the opening part of the inclined flared opening 7 is larger than the outer diameter of the locking elastic sheet, the outer diameter of the locking elastic sheet is larger than the inner diameter of the groove 3, the nut body 1 is continuously screwed by a spanner, the locking elastic sheet 8 is downwards extruded by the nut body, until the external diameter of the locking elastic sheet is consistent with the internal diameter of the groove, the locking elastic sheet is gradually clamped into the groove 3, the internal teeth of the inner wall of the locking elastic sheet 8 are tightened with the screw (namely the internal teeth are inserted into the screw thread of the screw), the locking degree between the locking elastic sheet and the screw is increased, when the nut main body 1 is gradually screwed inwards, the locking straight surface 11 at one end of the locking elastic sheet 8, which inclines upwards, is contacted with the inclined guide surface 5 of the inclined teeth 4 at the upper end of the groove 3, the locking straight surface moves along the inclined guide surface and cannot be blocked until the nut main body is completely screwed, when the nut main body 1 is required to be reversely screwed out or is vibrated, because the blocking surface 6 of the inclined teeth 4 at the upper end of the groove 3 of the nut main body 1 is contacted with the locking straight surface 11 of theThe inner teeth 9 of the sheet are tightened with the screw to prevent the nut body 1 from rotating reversely, so that the nut body is tightened with the screw without loosening. The outer wall of the nut body 1 at one end of the groove 3 is provided with a convex skirt 12. Because the inner diameter of the groove position is larger, the size of the nut body 1 at the position is increased, and the structural strength of the position is improved by adopting the convex skirt 12. The thread of the inner screw hole 2 is a forward thread or an inverse thread. The inner screw hole 2 can be made into a forward thread or a backward thread according to requirements, and if the backward thread is made, the directions of the inner teeth and the locking straight surface of the locking elastic sheet are correspondingly and symmetrically changed. Depth D of the groove 31Thickness D larger than locking spring plate 82. Because one end of the locking elastic sheet is inclined upwards gradually, the locking straight surface 11 at the inclined upwards end is matched with the inclined teeth 4 at the upper end of the groove, so that the depth of the groove 3 is required to be larger than the thickness of the locking elastic sheet 8, and the locking elastic sheet 8 is prevented from being flattened when the nut body 1 is screwed down. The upper end of the outer wall of the locking elastic sheet 8 is provided with an inclined surface 13 which is matched with the inclined flaring 7. The inclined plane 13 is matched with the inclined flaring 7, so that the locking elastic sheet 8 can be extruded conveniently, and the contraction of the locking elastic sheet can be guided.
Claims (5)
1. Locking nut that moves of card pad locking formula, its characterized in that: comprises a nut main body (1), an inner screw hole (2) is arranged in the nut main body, a groove (3) is arranged at the lower end of the nut main body and is communicated with the inner screw hole, the inner diameter of the groove is larger than that of the inner screw hole, triangular helical teeth (4) are uniformly distributed on the upper end surface of the groove, one side of each helical tooth is a helical guide surface (5), the other side of each helical tooth is a blocking surface (6), an oblique flared opening (7) is formed on the inner wall of the lower opening of the groove, a C-shaped locking elastic sheet (8) is arranged in the oblique flaring, the outer diameter of the locking elastic sheet is smaller than the inner diameter of the oblique flaring (7), the outer diameter of the locking elastic sheet is larger than the inner diameter of the groove (3), inner teeth (9) are arranged on the inner wall of the locking elastic sheet, an opening (10) is arranged in the locking elastic sheet, one end of the locking elastic sheet gradually inclines upwards, the end surface of the head which inclines upwards is provided with a locking straight surface (11), and the locking straight surface is matched with the blocking surface (6) of the helical tooth (4) at the upper end of the groove (3).
2. The clamp locking type anti-loosening nut as claimed in claim 1, wherein: the outer wall of the nut body (1) at one end of the groove (3) is provided with a convex skirt edge (12).
3. The clamp locking type anti-loosening nut as claimed in claim 1, wherein: the threads of the inner screw hole (2) are forward threads or reverse threads.
4. The clamp locking type anti-loosening nut as claimed in claim 1, wherein: the depth D of the groove (3)1Is larger than the thickness D of the locking elastic sheet (8)2。
5. The clamp locking type anti-loosening nut as claimed in claim 1, wherein: the upper end of the outer wall of the locking elastic sheet (8) is provided with an inclined plane (13), and the inclined plane is matched with the inclined flaring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022100360.2U CN212377087U (en) | 2020-09-23 | 2020-09-23 | Clamping-pad locking type anti-loosening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022100360.2U CN212377087U (en) | 2020-09-23 | 2020-09-23 | Clamping-pad locking type anti-loosening nut |
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| Publication Number | Publication Date |
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| CN212377087U true CN212377087U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022100360.2U Active CN212377087U (en) | 2020-09-23 | 2020-09-23 | Clamping-pad locking type anti-loosening nut |
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| CN (1) | CN212377087U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530949A (en) * | 2021-08-27 | 2021-10-22 | 海盐卫士标准件有限公司 | High-temperature-resistant high-strength self-locking nut |
-
2020
- 2020-09-23 CN CN202022100360.2U patent/CN212377087U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530949A (en) * | 2021-08-27 | 2021-10-22 | 海盐卫士标准件有限公司 | High-temperature-resistant high-strength self-locking nut |
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