CN215487147U - Anti-loose self-locking nut - Google Patents

Abstract

The utility model relates to the field of fasteners, in particular to an anti-loose self-locking nut which comprises a nut and a pad body, wherein a threaded through hole is formed in the center of the nut, a first flange is arranged on the top surface of the nut, the top surface of the first flange is of an inverted 7-shaped end surface structure, the pad body comprises an annular end part and a base which are of an integrated structure, the annular end part is obliquely arranged above the base, a longitudinal through hole is formed in the center of the pad body, so that the pad body is of a V-shaped structure with a through hole in the middle, a second flange matched with the first flange is arranged on the bottom surface of the base, the bottom surface of the second flange is of an inverted 7-shaped end surface structure, the direction of the inclined surface of the second flange is opposite to the direction of the inclined surface of the second flange, and the inclined surface and the second flange can form a concave-convex abutting structure. The utility model aims to provide a locking self-locking nut which is beneficial to solving the problems that the existing structure is difficult to disassemble and cannot be repeatedly used.

Description

Anti-loose self-locking nut

Technical Field

The utility model relates to the field of fasteners, in particular to a locking self-locking nut.

Background

The nut is one of the commonly used fasteners in the mechanical industry, in some application scenes, in order to connect stability, the nut is required to have a self-locking anti-skid effect, a common method is to adopt a double-nut structure, an inclined flange structure in concave-convex connection is further arranged on the connection surface of two nuts, wherein the nut at the inner side end is used as a main stressed fastener, the nut at the outer side end generates a positive pressure by utilizing a back tightening mode and self anti-bending deformation, the friction force between the nut and the nut at the inner side end is increased, and the friction force of anti-skid and self-locking is achieved. However, the structure has the problems that the disassembly is difficult, the flange structure on the connecting surface is damaged after the disassembly, and the repeated use can not be carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a locking self-locking nut which is beneficial to solving the problems that the existing structure is difficult to disassemble and cannot be repeatedly used.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a locking self-locking nut, includes the nut and fills up the body, nut central point puts and is equipped with the screw thread through-hole, and the top surface is equipped with first flange, first flange top surface is for falling 7 font end surface structure, fill up the body and include annular end portion and the base of integral type structure, annular end portion slope set up in the base top, fill up body central point and put and be equipped with vertical through-hole for fill up the body and form the V-arrangement structure that the longitudinal section has the through-hole for the centre, the base bottom surface be equipped with the second flange of first flange looks adaptation, second flange bottom surface is for falling 7 font end surface structure, the orientation of its inclined plane with the orientation on second flange inclined plane is opposite, and both can form unsmooth butt structure.

Preferably, the end face of the first flange inclined upward is disposed opposite to the direction of rotation of the threaded through hole.

Preferably, the outer side surface of the nut is of a hexagonal structure.

Preferably, the outer side surface of the base is consistent with the outer side surface structure of the nut.

Preferably, the top surface of the annular end portion is a flat surface.

Preferably, the thickness of the annular end portion is smaller than the thickness of the base.

Preferably, the top of the annular end part is also provided with an elastic flange.

Compared with the prior art, the utility model at least comprises the following advantages:

according to the utility model, the nut with the internal thread hole structure and the cushion body structure with the unthreaded through hole are arranged, the first flange and the second flange which are matched and can form concave-convex clamping are arranged on the connecting surface of the nut and the unthreaded through hole, under the matched locking state, the cushion block can apply a pressure to the nut below by using bending deformation resistance under the compression, so that the friction force between the first flange and the second flange is increased, the clamping structure can be provided by the first flange and the second flange, the self-locking effect is further improved, the nut is arranged at the outer side end and is used as a main locking fastener but not used as a main stress piece, therefore, when the nut needs to be disassembled, the cushion body can be fixed firstly, the nut can be disassembled without damaging the self-locking flange structure, the disassembling work is easy, the product structure can not be damaged, the repeated use can be carried out for many times, and the product utilization rate is improved.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a self-locking locknut;

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

FIG. 3 is a schematic structural view of a first flange and a second flange;

FIG. 4 is a schematic diagram of a pad body according to another embodiment.

The figure is marked with: 1-a nut; 11-a threaded hole; 2-a first flange; 3-a cushion body; 31-ring-shaped end; 32-a base; 33-a via hole; 4-a second flange; 5-elastic flanges.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the two elements or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the embodiment discloses a self-locking locknut, which comprises a nut 1 and a pad body 3, wherein the nut 1 and the pad body 3 are used in cooperation for fastening operation, in the fastening process, the nut 1 is positioned at the outer side of the pad body 3, and the pad body 3 is positioned at the inner side and is in direct contact with a part to be connected.

Nut 1 is hexagon nut, and its central point puts and is equipped with through-hole structure's screw hole 11, and screw hole 11 is used for being connected with the double-screw bolt cooperation, and 1 top surface of nut is equipped with first flange 2, first flange 2 and 1 formula structure as an organic whole of nut, 2 top surfaces of first flange are for falling 7 font end face structures, need explain that, the terminal surface of 2 tilt up of first flange with screw hole 11 revolve to opposite setting.

The cushion body 3 comprises an annular end part 31 and a base 32 which are of an integral structure, the annular end part 31 is obliquely arranged above the base 32, a longitudinal through hole 33 is formed in the center of the cushion body 3, the through hole 33 penetrates through the base 32, the size of the through hole 33 is matched with that of the threaded hole 11 and used for a stud to penetrate through, the through hole 33 is in clearance fit with the stud, and the longitudinal section of the cushion body 3 is of a V-shaped structure with the longitudinal through hole in the middle.

The top surface of the annular end part 31 is a flat surface and is used for being abutted to a component to be connected, the annular end part 31 serves as a main stress deformation resistant area, and the V-shaped structure of the annular end part can provide better supporting structure strength.

Referring to fig. 2 and 3, the second flange 4 is provided on the bottom surface of the base 32 to be fitted to the first flange 2, the bottom surface of the second flange 4 has an inverted 7-shaped end surface structure, and the inclined surface of the second flange has an opposite direction to the inclined surface of the second flange 2, so that a concave-convex contact structure can be formed between the two.

It should be noted that, because the end face of the first flange 2 that inclines upward is opposite to the turning direction of the threaded hole 11, as shown in fig. 3, during the locking rotation process of the nut 1, the inclined faces of the first flange 2 and the second flange 4 will relatively move from low to high, so as to ensure the rotation fluency of the nut 1, and will not generate the seizing phenomenon during the self-locking process, and after the locking, the cushion body 3 is clamped between the nut 1 and the external component, and after the cushion body 3 is pressed, a pressure will be applied to one side of the first flange 2 of the nut 1, specifically, when the second flange 4 applies a pressure to the first flange 2 to the outside, and when the pressure is on the two attached inclined faces, because the through hole 33 inside the cushion body 3 does not have a threaded structure, therefore, the inclined face of the second flange 4 will slide towards the bottom of the inclined face of the first flange 2, so that the highest end points of the first flange 2 and the second flange 4 are in a dislocation state, and a self-locking structure is formed. When the detachable mat is detached, the outer end faces of the nut 1 and the base 3 are clamped by using a tool, and the mat body 3 and the nut 1 are fixed at the same time, so that the two form a detachable whole, and the detachable mat can be detached easily.

As shown in fig. 4, in another implementation process, the top of the annular end portion 31 is further provided with an elastic flange 5, the elastic flanges 5 are arranged on the top surface of the annular end portion 31 in a central symmetry manner, and form an integrated structure with the annular end portion 31, and the elastic flange 5 can deform during the locking process, and increase the pressure applied by the cushion body 1 to the nut 2 by using the elastic characteristic of the elastic flange, thereby increasing the clamping and self-locking strength between the elastic flange and the nut.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. The utility model provides a locking self-locking nut, its characterized in that includes the nut and fills up the body, nut central point puts and is equipped with the screw thread through-hole, and the top surface is equipped with first flange, first flange top surface is the character cut of falling 7 terminal surface structure, fill up the body and include annular end and the base of integral type structure, annular end slope set up in the base top, fill up body central point and put and be equipped with vertical through-hole for fill up the body and form the V-arrangement structure that the longitudinal section has the through-hole for the centre, the base bottom surface be equipped with the second flange of first flange looks adaptation, second flange bottom surface is the character cut of falling 7 terminal surface structure, the orientation of its inclined plane with the orientation of second flange inclined plane is opposite, both can form unsmooth butt structure.

2. The anti-loose self-locking nut as claimed in claim 1, wherein the upwardly inclined end surface of the first flange is disposed opposite to the rotation direction of the threaded through hole.

3. The anti-loose self-locking nut as claimed in claim 1, wherein the outer side surface of the nut is of a hexagonal structure.

4. The anti-loose self-locking nut as claimed in claim 3, wherein the outer side of the base is identical in structure to the outer side of the nut.

5. The locknut as claimed in claim 1, wherein the top surface of the annular end is a flat surface.

6. The locknut of claim 1 wherein the thickness of the annular end is less than the thickness of the base.

7. The anti-loose self-locking nut as claimed in claim 1, wherein the top of the annular end is further provided with an elastic flange.

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