CN215521584U

CN215521584U - Anti-loose nut

Info

Publication number: CN215521584U
Application number: CN202121488043.0U
Authority: CN
Inventors: 张金梅; 张贵森
Original assignee: Tianjin Haibin Marine Technology Co ltd
Current assignee: Tianjin Haibin Marine Technology Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-01-14
Anticipated expiration: 2031-07-01

Abstract

The invention provides a locknut which comprises a nut body consisting of a base part and a screwing part, wherein a continuous internal thread structure is processed on the inner side of the nut body; a concave platform is arranged at one end of the inner wall of the screwing part far away from the base part; the foundation part is provided with a through groove along the radial direction, and the through groove is provided with a notch communicated with the through groove towards the outer side of the foundation part. The nut locking device is reasonable in structural design, the deformable part is gradually deformed by extrusion in the nut locking process, and the internal thread structure of the nut body is locked with the threads on the matched screw rod, so that the locking effect is effectively achieved. Therefore, the nut provided by the invention can play a role in preventing loosening by being used alone, and is simple to operate and high in reliability.

Description

Anti-loose nut

Technical Field

The invention belongs to the technical field of mechanical connecting pieces, and particularly relates to a locknut.

Background

As a widely used connector, nuts are available in many forms. After the nut is connected to the screw rod, not only is reliable connection strength required, but also reliable connection stability is required, so that the anti-loosening technology of the nut is always an important research and development direction of nut products. The traditional anti-loosening method is mainly realized by combining a nut and a washer, or destroying a thread pair, and adopting an anti-loosening mode of combining washers, the reliability of the washers is also required, the spring washer and the flat washer are reversely assembled or damaged, so that anti-loosening failure is easily caused, and the later-stage disassembly is difficult by adopting the mode of destroying the thread pair. Therefore, there is a need for an improved anti-loosening structure for nuts.

Disclosure of Invention

In view of the above, the present invention provides a locknut to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a locknut comprises a nut body consisting of a base part and a screwing part, wherein a continuous internal thread structure is processed on the inner side of the nut body; a concave platform is arranged at one end of the inner wall of the screwing part far away from the base part; the foundation part is provided with a through groove along the radial direction, and the through groove is provided with a notch communicated with the through groove towards the outer side of the foundation part.

Further, the inner diameter of the concave platform is larger than the thread diameter of the internal thread structure.

Further, the outer wall of the screwing part is of an outer hexagonal structure.

Furthermore, the end surfaces of two sides of the nut body are respectively provided with anti-skidding threads.

Furthermore, the two sides of the outer end face of the base part corresponding to the notch are inclined matching faces.

Furthermore, the side wall and the bottom surface of the notch are in fillet transition.

Further, the inclination angle of the bottom surface is 2-20 degrees, namely, when the nut is used in a vertical state, the included angle between the bottom surface and the horizontal plane is 2-20 degrees.

Compared with the prior art, the invention has the following advantages:

the nut locking device is reasonable in structural design, the deformable part is gradually deformed by extrusion in the nut locking process, and the internal thread structure of the nut body is locked with the threads on the matched screw rod, so that the locking effect is effectively achieved. Therefore, the nut provided by the invention can play a role in preventing loosening by being used alone, and is simple to operate and high in reliability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a cross-sectional view of the invention;

FIG. 5 is a schematic view of an embodiment of the present invention with an inclined mating surface;

FIG. 6 is a schematic view of the base portion and the screwing portion of the present invention in a separate structure;

fig. 7 is a schematic diagram of the invention in an application state.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A locknut, as shown in figures 1 to 6, comprises a nut body consisting of a base part 1 and a screwing part 2, wherein the inner side of the nut body is processed with a continuous internal thread structure 3. The outer wall of the screwing part is of an outer hexagonal structure, so that the nut can be screwed by using a tool to fasten.

And one end of the inner wall of the screwing part, which is far away from the base part, is provided with a concave table 4, and the bottom of the concave table is processed to form a positioning surface 5. Preferably, the inner diameter of the recess is larger than the thread diameter of the internal thread formation. The end of the screw rod 12 matched with the nut is provided with the clamping groove, when the nut is used, as shown in fig. 7, the nut is screwed on the screw rod and locked, the clamping spring 13 is installed in the clamping groove, the clamping spring can abut against the positioning surface of the concave table, the nut is prevented from falling off, the use reliability is high, and accidents are avoided.

It should be noted that the width of the clamping groove can ensure that the snap spring can be smoothly clamped after the nut is screwed in place, and generally, the width of the clamping groove is 1.5 to 3 times of the pitch of the thread structure.

The base part is provided with a through groove 6 along the radial direction, and the through groove is provided with a notch 7 communicated with the through groove towards the outer side of the base part, so that the tail end of the base part forms an inward deformable part. Compared with a groove body structure with inclination, the through groove which is integrally T-shaped along the radial direction of the nut body is easier to process.

Preferably, the end surfaces of the two sides of the nut body are respectively provided with anti-slip threads 11, the nut is directly screwed and installed on the screw rod without using a gasket, and the anti-slip threads on the end surface of the nut body are in contact with the surface of the structural member, so that the friction force is improved.

In an alternative embodiment, the outer end surface of the base portion is flanked by inclined mating surfaces 8 corresponding to the cutouts. The side wall and the bottom surface of the opening are in transition by adopting a fillet 9. Preferably, the inclination angle of the bottom surface is 2-20 degrees, namely, when the nut is used in a vertical state, the included angle between the bottom surface and the horizontal plane is 2-20 degrees. When the basic unit orientation structure one side, when revolving wrong this nut locking, along with bottom surface and structure surface contact effort increase, but deformation portion receives the extrusion and produces deformation towards the basic unit opposite side, promptly, it narrows down gradually to link up the control of groove on nut body axial direction, and then but deformation portion (and the screw thread of deformation portion inner wall) extrudees the screw thread on the screw rod, reaches "locking" state to improve the reliability of connecting, locking effectual.

In an alternative embodiment, the base part and the screwing part are of a split structure, positioning holes are correspondingly formed in the end face of the screwing part and the end face of the base part, and the positioning pins 10 inserted into the positioning holes ensure the axial positioning of the screwing part and the base part. In this embodiment, the base portion and the screwing portion are generally fixed in a butt joint manner, and then the internal thread structure is formed in one step, so as to ensure the continuity of the internal thread. When the anti-theft nut is used, after the nut is installed by screwing the screwing part through tools such as a wrench, the screwing part can be pulled down, and the anti-theft effect can be effectively achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. A locknut is characterized in that: the nut comprises a nut body consisting of a base part and a screwing part, wherein a continuous internal thread structure is processed on the inner side of the nut body; a concave platform is arranged at one end of the inner wall of the screwing part far away from the base part; the foundation part is provided with a through groove along the radial direction, and the through groove is provided with a notch communicated with the through groove towards the outer side of the foundation part.

2. The locknut of claim 1, wherein: the inner diameter of the concave platform is larger than the thread diameter of the internal thread structure.

3. The locknut of claim 1, wherein: the outer wall of the screwing part is of an outer hexagonal structure.

4. The locknut of claim 1, wherein: the end surfaces of the two sides of the nut body are respectively provided with anti-skidding threads.

5. The locknut of claim 1, wherein: the outer end face of the base part is provided with inclined matching faces corresponding to the two sides of the notch.

6. The locknut of claim 5, wherein: and the side wall and the bottom surface of the notch are in round angle transition.

7. The locknut of claim 5, wherein: the inclination angle of the bottom surface is 2-20 degrees.