CN220037218U

CN220037218U - Anti-back locknut

Info

Publication number: CN220037218U
Application number: CN202322856405.2U
Authority: CN
Inventors: 王艳晖; 刘才勇; 贾朝杰; 谢以志; 李丽美; 姚成扬; 王继荣; 李超; 郑旺成; 颜修菊
Original assignee: Fuan Aozhan Industrial Co ltd
Current assignee: Fuan Aozhan Industrial Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2023-11-17
Anticipated expiration: 2033-10-24

Abstract

The utility model relates to the technical field of nuts and discloses a retaining locknut which comprises a nut body, wherein two sides of the interior of the nut body are respectively provided with a movable cavity, the movable cavities are communicated with a shaft hole of the nut body through a through hole, one side of the upper ends of the movable cavities on the two sides is respectively provided with a longitudinal hole, the upper ends of the longitudinal holes are respectively provided with an inner threaded ring groove, the inner threads of the inner threaded ring grooves are connected with an outer threaded ring, the upper ends of the outer threaded rings are fixedly connected with a rotating nut.

Description

Anti-back locknut

Technical Field

The utility model belongs to the technical field of nuts, and particularly relates to a backstop locknut.

Background

The nut is a part which is screwed with a bolt or a screw rod to play a role in fastening. The nut is a part for tightly connecting mechanical equipment, and the nut and the bolt with the same specification can be connected together through the inner threads.

Under the long-time use of the nut, the nut is affected by vibration of mechanical equipment, is very easy to loosen, leads to insufficient tightness of connection between the bolt and the nut and further affects the operation of a machine, and therefore, a stop locknut needs to be designed.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the anti-back locknut, which effectively solves the problems that the existing nut is affected by the vibration of mechanical equipment and is easy to loosen, so that the connection between a bolt and the nut is not tight enough, and the operation of a machine is affected.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the anti-back locknut comprises a nut body, wherein movable cavities are formed in two inner sides of the nut body, the movable cavities are communicated with a shaft hole of the nut body through holes, longitudinal holes are formed in one side of the upper ends of the movable cavities on two sides, an inner thread ring groove is formed in the upper end of each longitudinal hole, an outer thread ring is connected with the inner thread of each inner thread ring groove in a threaded manner, and a rotating nut is fixedly connected to the upper end of each outer thread ring;

the movable cavities on two sides are internally and slidably connected with a sliding block, one end of the sliding block is connected with a push rod, one end of the push rod is positioned in the through hole, a first spring is sleeved outside the push rod, one end of the first spring is connected with the sliding block, and the other end of the first spring is connected with the inner wall of the movable cavity;

longitudinal rods are movably arranged in the longitudinal holes at two sides, and the lower ends of the longitudinal rods are movably contacted with the sliding blocks.

Preferably, the contact surfaces of the longitudinal rod and the sliding block are provided with inclined planes

Preferably, the sinking groove is formed in the circumference of the upper end of the nut body, an elastic piece is arranged in the sinking groove, the upper end of the elastic piece protrudes out of the sinking groove, a second spring is connected inside the elastic piece, and a bulge is connected with the circumference of the lower end of the rotating nut.

Preferably, the elastic piece comprises a bottom plate section, one side of the upper end of the bottom plate section is connected with a cambered surface section, one end of the cambered surface section is connected with a vertical section, and the second spring is positioned between the bottom plate section and the cambered surface section.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the nut is rotated to drive the external thread ring to rotate downwards to extrude the longitudinal rod, and the longitudinal rod extrudes the sliding block, so that the sliding block drives the ejector rod to extend out of the through hole, and the ejector rod is enabled to prop against the bolt piece, thereby ensuring the backstop and anti-loose between the nut body and the bolt piece.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

In the drawings:

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a bump connection structure according to the present utility model;

FIG. 4 is a schematic view of the structure of the elastic member of the present utility model;

in the figure: 1. a nut body; 2. a movable cavity; 3. a through hole; 4. a longitudinal bore; 5. an internal thread ring groove; 6. an external threaded ring; 7. rotating the nut; 8. a slide block; 9. a push rod; 10. a first spring; 11. a longitudinal rod; 12. an inclined plane; 13. sinking grooves; 14. an elastic member; 141. a floor section; 142. a cambered surface section; 143. a vertical section; 15. a second spring; 16. a protrusion.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-4, the utility model comprises a nut body 1, wherein both sides of the interior of the nut body 1 are provided with a movable cavity 2, the movable cavity 2 is communicated with a shaft hole of the nut body 1 through a through hole 3, one side of the upper end of the movable cavity 2 at both sides is provided with a longitudinal hole 4, the upper end of the longitudinal hole 4 is provided with an internal thread ring groove 5, the internal thread of the internal thread ring groove 5 is connected with an external thread ring 6, and the upper end of the external thread ring 6 is fixedly connected with a rotating nut 7;

the inside of the movable cavity 2 at two sides is connected with a sliding block 8 in a sliding way, one end of the sliding block 8 is connected with a push rod 9, one end of the push rod 9 is positioned in the through hole 3, a first spring 10 is sleeved outside the push rod 9, one end of the first spring 10 is connected with the sliding block 8, and the other end of the first spring 10 is connected with the inner wall of the movable cavity 2;

longitudinal rods 11 are movably arranged in the longitudinal holes 4 at two sides, the lower ends of the longitudinal rods 11 are movably contacted with the sliding blocks 8, and inclined planes 12 are formed on contact surfaces of the longitudinal rods 11 and the sliding blocks 8;

the circumference of the upper end of the nut body 1 is provided with a sinking groove 13, an elastic piece 14 is arranged in the sinking groove 13, the upper end of the elastic piece 14 protrudes out of the sinking groove 13, a second spring 15 is connected in the elastic piece 14, and the circumference of the lower end of the rotating nut 7 is connected with a bulge 16;

the elastic piece 14 comprises a bottom plate section 141, one side of the upper end of the bottom plate section 141 is connected with an arc surface section 142, one end of the arc surface section 142 is connected with a vertical section 143, and the second spring 15 is positioned between the bottom plate section 141 and the arc surface section 142;

when the rotating nut 7 is screwed down, the boss 16 at the lower end of the rotating nut 7 rotates along the cambered surface section 142 of the elastic member 14, so that no rotation obstruction is formed, and after the rotating nut 7 is screwed down, the protruding part at the upper end of the elastic member 14 and the boss 16 are mutually abutted, so that the rotating nut 7 is prevented from rotating.

Working principle: when the nut is used, the nut body 1 and a corresponding bolt piece are assembled in a threaded manner, after the nut body 1 is screwed, the rotating nut 7 rotates to drive the external thread ring 6 to rotate and move downwards in the internal thread ring groove 5 along with the rotation of the rotating nut 7, the external thread ring 6 downwards extrudes the longitudinal rods 11 on two sides, the longitudinal rods 11 are extruded to move downwards, the longitudinal rods 11 further extrude the sliding blocks 8, under the action of the inclined planes 12, the vertical force of the longitudinal rods 11 acts on the sliding blocks 8, the sliding blocks 8 transversely move to drive the ejector rods 9 to move, at the moment, the first springs 10 are compressed, and the ejector rods 9 on two sides extend out of the through holes 3 to abut against the bolt piece, so that the nut body 1 and the bolt piece are further limited to play a role of stopping and locking;

on the other hand, after the rotating nut 7 is screwed down, the protrusion 16 at the lower end of the rotating nut abuts against the elastic member 14 protruding from the upper end of the nut body 1, so that the rotating nut 7 is effectively prevented from rotating.

Claims

1. The utility model provides a non-return locknut, includes nut body (1), its characterized in that: the nut comprises a nut body (1), wherein movable cavities (2) are formed in two inner sides of the nut body (1), the movable cavities (2) are communicated with shaft holes of the nut body (1) through holes (3), longitudinal holes (4) are formed in one side of the upper ends of the movable cavities (2) on two sides, an inner thread ring groove (5) is formed in the upper end of each longitudinal hole (4), an outer thread ring (6) is connected with the inner thread of each inner thread ring groove (5), and a rotating nut (7) is fixedly connected with the upper end of each outer thread ring (6);

the inside of the movable cavity (2) at two sides is connected with a sliding block (8) in a sliding way, one end of the sliding block (8) is connected with a push rod (9), one end of the push rod (9) is positioned in the through hole (3), a first spring (10) is sleeved outside the push rod (9), one end of the first spring (10) is connected with the sliding block (8), and the other end of the first spring (10) is connected with the inner wall of the movable cavity (2);

longitudinal rods (11) are movably arranged in the longitudinal holes (4) at two sides, and the lower ends of the longitudinal rods (11) are movably contacted with the sliding blocks (8).

2. A backstop locknut as defined in claim 1, wherein: inclined planes (12) are formed on the contact surfaces of the longitudinal rods (11) and the sliding blocks (8).

3. A backstop locknut as defined in claim 1, wherein: the nut is characterized in that a sinking groove (13) is formed in the circumference of the upper end of the nut body (1), an elastic piece (14) is arranged in the sinking groove (13), the upper end of the elastic piece (14) protrudes out of the sinking groove (13), a second spring (15) is connected to the inner portion of the elastic piece (14), and a protrusion (16) is connected to the circumference of the inner portion of the lower end of the rotating nut (7).

4. A backstop locknut as defined in claim 3, wherein: the elastic piece (14) comprises a bottom plate section (141), one side of the upper end of the bottom plate section (141) is connected with a cambered surface section (142), one end of the cambered surface section (142) is connected with a vertical section (143), and the second spring (15) is located between the bottom plate section (141) and the cambered surface section (142).