CN210919760U - Anti-loosening nut structure - Google Patents

Anti-loosening nut structure Download PDF

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Publication number
CN210919760U
CN210919760U CN201921773417.6U CN201921773417U CN210919760U CN 210919760 U CN210919760 U CN 210919760U CN 201921773417 U CN201921773417 U CN 201921773417U CN 210919760 U CN210919760 U CN 210919760U
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CN
China
Prior art keywords
nut
main
auxiliary
extension part
pressure hole
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Active
Application number
CN201921773417.6U
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Chinese (zh)
Inventor
曹武
钟泽宇
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Hunan Shenyi Machinery Application Research Institute Co ltd
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Hunan Shenyi Machinery Application Research Institute Co ltd
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Priority to CN201921773417.6U priority Critical patent/CN210919760U/en
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Abstract

The utility model discloses a loosening prevention nut structure, which belongs to the technical field of nuts and comprises a main nut and an auxiliary nut, wherein the main nut and the auxiliary nut are both provided with a central hole arranged along the central axis direction of the main nut, and an internal thread is arranged in the central hole; the main nut comprises a main body and an extension part arranged at one end of the main body, the extension part is inserted into the auxiliary nut, the extension part is cylindrical, a circle of annular groove is formed in the circumferential surface of the extension part, a pressure hole is formed in the auxiliary nut, one end of the pressure hole is communicated with the annular groove, and the other end of the pressure hole penetrates through the side part of the auxiliary nut; the pressure hole is internally provided with a filling body, the filling body is positioned in the pressure hole and the annular groove, and the problems that the fastening effect of the existing nut is not enough and the loosening phenomenon is easy to occur are solved.

Description

Anti-loosening nut structure
Technical Field
The utility model relates to a nut technical field, in particular to locking nut structure that moves.
Background
The nut is a nut, and is a part for fastening together with a bolt or a screw, and is a necessary element for all production and manufacturing machines. Nuts can be classified into carbon steel, stainless steel, non-ferrous metal (such as copper) and other types according to different materials.
The locknut is a common fastening locknut and mainly comprises the modes of mechanical locking, rivet-punch locking, friction locking, structural locking and the like. Although the types of the existing locknuts are more, under the conditions of huge impact, vibration and variable load, along with the increase of the vibration frequency of mechanical equipment and the change of the vibration frequency, the loosening phenomenon still easily occurs to the nuts, and the fastening effect needs to be strengthened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a locking nut structure that moves, it has solved current nut fastening effect inadequately, appears the problem that the pine takes off the phenomenon easily.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a loosening-preventing nut structure comprises a main nut and an auxiliary nut, wherein central holes arranged along the central axis direction of the main nut are formed in the main nut and the auxiliary nut, and internal threads are arranged in the central holes;
the main nut comprises a main body and an extension part arranged at one end of the main body, the extension part is inserted into the auxiliary nut, the extension part is cylindrical, a circle of annular groove is formed in the circumferential surface of the extension part, a pressure hole is formed in the auxiliary nut, one end of the pressure hole is communicated with the annular groove, and the other end of the pressure hole penetrates through the side part of the auxiliary nut;
and a filling body is arranged in the pressure hole and is positioned in the pressure hole and the annular groove.
By adopting the structure, during fastening, the auxiliary nut is screwed on the screw rod, then the main nut is screwed on the screw rod, and the main nut is inserted into the auxiliary nut, at the moment, the pressing hole on the auxiliary nut just corresponds to the annular groove on the extension part, and after the main nut and the auxiliary nut are screwed well, the filling body is filled into the pressing hole and the annular groove, so that the main nut and the auxiliary nut are firmly fixed. Adopt two nut settings to firmly fix main nut and vice nut, strengthened the interlock effect between screw rod and the nut, the wholeness is stronger, under the condition of huge impact, vibration and variable load, can effectively reduce the nut pine phenomenon of taking off, the life of extension mechanical equipment and nut.
The method is further optimized as follows: the auxiliary nut is provided with an installation groove along the direction of the central shaft of the auxiliary nut, and the central shaft of the auxiliary nut and the central shaft of the main nut are positioned on the same straight line;
the extension portion is inserted in the installation groove, a sealing ring is fixed on the inner wall of the installation groove, and the sealing ring is abutted between the inner wall of the installation groove and the outer wall of the extension portion.
By adopting the structure, the main nut and the auxiliary nut are both made of hard materials, have poor direct contact sealing performance and are easy to wear. The setting of sealing washer can improve the connectivity between main nut and the vice nut on the one hand, and on the other hand can play the absorbing effect of buffering, has solved current nut fastening effect not enough, appears the pine easily and takes off the problem of phenomenon.
The method is further optimized as follows: the inner diameter of the sealing ring is gradually reduced along the direction far away from the main body.
By adopting the structure, the fastening effect is better, and the outward slippage of the extension part is reduced.
The method is further optimized as follows: the filling body is made of fixing glue, and the fixing glue is injected into the annular groove through the pressure hole.
Adopt above-mentioned structure, fixed effect is better, but difficult dismantlement.
The method is further optimized as follows: the filling body is a wedge-shaped insert block, the wedge-shaped insert block is inserted into the pressure hole and the annular groove, and the pressure hole is wedge-shaped and is matched with the wedge-shaped insert block.
By adopting the structure, the fixing effect is good without fixing glue, but the dismounting is convenient, and the later maintenance and dismounting are more favorable.
The method is further optimized as follows: the three pressing holes are formed and are uniformly distributed around the auxiliary nut.
By adopting the structure, a better fastening effect is achieved, and the connection strength of the main nut and the auxiliary nut can be effectively improved.
To sum up, the utility model discloses following beneficial effect has: during fastening, screw up vice nut on the screw rod, then screw up main nut on the screw rod again to make main nut's extension insert and establish in vice nut's mounting groove, three pressure hole on the vice nut this moment just in time corresponds with the ring channel on the extension, treat main nut and vice nut and screw up the back well, inject the solid fixed glue or squeeze into the wedge inserted block in pressing the hole into again in pressing the hole, so that main nut and vice nut firmly fix. Adopt two nut settings to firmly fix main nut and vice nut, strengthened the interlock effect between screw rod and the nut, the wholeness is stronger, under the condition of huge impact, vibration and variable load, can effectively reduce the nut pine phenomenon of taking off, the life of extension mechanical equipment and nut.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment, which is mainly used for embodying the overall structure of a loosening-prevention nut structure;
FIG. 2 is a schematic sectional view of the embodiment, which is mainly used for embodying the specific structure of the anti-loosening nut structure;
FIG. 3 is a schematic cross-sectional view of an embodiment, primarily used to embody the structure of the main nut;
fig. 4 is a schematic sectional view of the embodiment, which is mainly used for embodying the structure of the secondary nut.
In the figure, 1, a main nut; 101. a main body; 102. an extension portion; 2. a secondary nut; 3. pressing the hole; 4. a seal ring; 5. an annular groove; 6. a central bore; 7. an internal thread; 8. and (4) mounting the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a loosening-preventing nut structure is shown in figures 1, 2, 3 and 4 and comprises a main nut 1 and an auxiliary nut 2. The main nut 1 and the auxiliary nut 2 are respectively provided with a center hole 6 arranged along the direction of the central axis of the main nut 1, an internal thread 7 is arranged in the center hole 6, and the screw rod is inserted in the center hole 6 and is in threaded fit with the internal thread 7, so that the main nut 1 and the auxiliary nut 2 are respectively in threaded connection on the screw rod. The central shaft of the auxiliary nut 2, the central shaft of the screw rod and the central shaft of the main nut 1 are all positioned on the same straight line.
Referring to fig. 1, 2, 3 and 4, the main nut 1 includes a main body 101 and an extension portion 102 integrally provided at one end of the main body 101, the extension portion 102 being for insertion in the sub nut 2. The outer wall of the extension part 102 is contacted with the auxiliary nut 2, the extension part 102 is cylindrical, the circumferential surface of the extension part 102 is provided with a ring of annular grooves 5, and the annular grooves 5 are close to the end parts of the extension part 102. The auxiliary nut 2 is provided with a pressure hole 3 which is arranged along the vertical direction of the central shaft of the auxiliary nut 2, one end of the pressure hole 3 corresponds to the position of the annular groove 5 and is communicated with the annular groove 5, and the other end of the pressure hole penetrates through the side part of the auxiliary nut 2. Three pressure holes 3 are formed, and the three pressure holes 3 are uniformly distributed around the auxiliary nut 2.
Referring to fig. 1, 2, 3 and 4, a filling body is arranged in the pressure hole 3 and is positioned in the pressure hole 3 and the annular groove 5. Preferably, the filling body is fixing glue, the fixing glue is injected into the annular groove 5 through the pressure hole 3, and the fixing glue is filled in the pressure hole 3 and the annular groove 5 so as to fixedly connect the main nut 1 and the auxiliary nut 2. Specifically, the fixing glue is screw fixing glue. Preferably, the filling body is a wedge-shaped insert block, and the wedge-shaped insert block is inserted into the pressure hole 3 and the annular groove 5. The pressure hole 3 is wedge-shaped and is matched with a wedge-shaped insert block which is tightly propped against the inside of the main nut 1 and the auxiliary nut 2.
Referring to fig. 1, 2, 3 and 4, the auxiliary nut 2 is provided with an installation groove 8 along the central axis direction of the auxiliary nut 2, the extension portion 102 is inserted in the installation groove 8 and tightly abuts against the inner wall of the installation groove 8, and the installation groove 8 is matched with the extension portion 102. The inner wall of the mounting groove 8 is fixed with a sealing ring 4, the sealing ring 4 is tightly propped between the inner wall of the mounting groove 8 and the outer wall of the extension part 102, and the sealing ring 4 is positioned between the main body 101 and the annular groove 5. The inner diameter of the seal ring 4 becomes smaller in a direction away from the main body 101. The sealing ring 4 is made of rubber.
During the fastening, screw up sub-nut 2 on the screw rod, then screw up main nut 1 on the screw rod again, and make extension 102 of main nut 1 insert and establish in mounting groove 8 of sub-nut 2, three pressure hole 3 on the sub-nut 2 this moment just in time corresponds with annular groove 5 on the extension 102, treat that main nut 1 and sub-nut 2 screw up the back well, pour into the solid fixed glue into again in pressing hole 3 or squeeze into the wedge inserted block in pressing hole 3, so that main nut 1 and sub-nut 2 firmly fix.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a locking nut structure that moves which characterized by: the nut comprises a main nut (1) and an auxiliary nut (2), wherein both the main nut (1) and the auxiliary nut (2) are provided with center holes (6) arranged along the direction of a center shaft of the main nut (1), and internal threads (7) are arranged in the center holes (6);
the main nut (1) comprises a main body (101) and an extension part (102) arranged at one end of the main body (101), the extension part (102) is inserted into the auxiliary nut (2), the extension part (102) is cylindrical, a circle of annular groove (5) is formed in the circumferential surface of the extension part (102), a pressing hole (3) is formed in the auxiliary nut (2), one end of the pressing hole (3) is communicated with the annular groove (5), and the other end of the pressing hole penetrates through the side part of the auxiliary nut (2);
and a filling body is arranged in the pressure hole (3), and is positioned in the pressure hole (3) and the annular groove (5).
2. The structure of claim 1, wherein: the auxiliary nut (2) is provided with an installation groove (8) along the central axis direction of the auxiliary nut (2), and the central axis of the auxiliary nut (2) and the central axis of the main nut (1) are positioned on the same straight line;
the extension part (102) is inserted in the mounting groove (8), a sealing ring (4) is fixed on the inner wall of the mounting groove (8), and the sealing ring (4) is tightly abutted between the inner wall of the mounting groove (8) and the outer wall of the extension part (102).
3. The structure of the locking nut as claimed in claim 2, wherein: the inner diameter of the sealing ring (4) is gradually reduced along the direction far away from the main body (101).
4. The structure of claim 1, wherein: the filling body is made of fixing glue, and the fixing glue is injected into the annular groove (5) through the pressure hole (3).
5. The structure of claim 1, wherein: the filling body is a wedge-shaped insert block, the wedge-shaped insert block is inserted into the pressure hole (3) and the annular groove (5), and the pressure hole (3) is wedge-shaped and is matched with the wedge-shaped insert block.
6. The structure of claim 1, wherein: the three pressing holes (3) are formed and uniformly distributed around the auxiliary nut (2).
CN201921773417.6U 2019-10-22 2019-10-22 Anti-loosening nut structure Active CN210919760U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921773417.6U CN210919760U (en) 2019-10-22 2019-10-22 Anti-loosening nut structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921773417.6U CN210919760U (en) 2019-10-22 2019-10-22 Anti-loosening nut structure

Publications (1)

Publication Number Publication Date
CN210919760U true CN210919760U (en) 2020-07-03

Family

ID=71364551

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921773417.6U Active CN210919760U (en) 2019-10-22 2019-10-22 Anti-loosening nut structure

Country Status (1)

Country Link
CN (1) CN210919760U (en)

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