CN214465488U

CN214465488U - Wedge-in locknut

Info

Publication number: CN214465488U
Application number: CN202120595262.2U
Authority: CN
Inventors: 孙治超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-10-22
Anticipated expiration: 2031-03-24

Abstract

The application discloses wedge-in locknut belongs to fastener technical field. The wedged anti-loose nut comprises a nut body and a first washer, wherein central axes of the nut body and the first washer are collinear; a threaded hole used for being connected with a bolt is formed in the nut main body, the nut main body comprises a conical nut and a limiting piece used for limiting a first gasket, and the large end face of the conical nut is connected with the limiting piece; the first washer is of an oval structure, the inner side of the oval structure is a conical structure matched with the conical nut, the average value of the sum of the oval long axis and the short axis of the conical surface on the inner side of the first washer is larger than the outer diameter of the small end face of the conical nut, and the ratio of the outer diameter of the small end face of the conical nut to the oval short axis of the conical surface on the inner side of the first washer is 1.02-1.15. The wedged anti-loose nut is simple in structure, convenient to process and manufacture, excellent in anti-loose performance and wide in practicability.

Description

Wedge-in locknut

Technical Field

The utility model relates to a wedge-in locknut belongs to fastener technical field.

Background

In modern mechanical assembly, nuts are common fasteners and are widely applied to assembly and connection of equipment in multiple industries. However, in the working process, due to the influence of high-strength impact, vibration and the like, the nut can be loosened and even separated from the bolt, so that a fixed object cannot be completely fixed, and great potential safety hazards are caused. Therefore, the technical problem of preventing the nut from loosening is prime to be solved.

The locknut in the prior art has many problems, such as complex structure, high production and processing difficulty, high manufacturing cost and the like, so that the application of the locknut is limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the purpose of this application is to provide a wedge-in locknut, this wedge-in locknut simple structure, the processing preparation of being convenient for, locking excellent performance has extensive practicality.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

the wedged anti-loose nut comprises a nut main body and a first washer, wherein the central axes of the nut main body and the first washer are collinear;

a threaded hole used for being connected with a bolt is formed in the nut main body, the nut main body comprises a conical nut and a limiting piece used for limiting a first gasket, and the large end face of the conical nut is connected with the limiting piece;

the first washer is of an oval structure, the inner side of the oval structure is a conical structure matched with the conical nut, the average value of the sum of the oval long axis and the short axis of the conical surface on the inner side of the first washer is larger than the outer diameter of the small end face of the conical nut, and the ratio of the outer diameter of the small end face of the conical nut to the oval short axis of the conical surface on the inner side of the first washer is 1.02-1.15.

Optionally, the wedged locknut further comprises a second washer, the second washer is cylindrical, the inner diameter of the second washer is larger than the outer diameter of the large end face of the conical nut, and the axial height ratio of the first washer to the second washer is 1.5-5; preferably, the ratio is 3.2; preferably, the ratio is 3.5.

Optionally, the sum of the axial heights of the first washer and the second washer is equal to the axial height of the cone nut.

Optionally, the taper range of the outer side of the conical nut is 2-9 degrees; preferably 5.3 degrees; preferably 5.8 degrees.

Optionally, the taper range of the inner side of the first gasket is 2-9 degrees; preferably 5.3 degrees; preferably 5.8 degrees.

Optionally, the difference between the inner diameter of the second washer and the outer diameter of the large end face of the conical nut ranges from 0.1 mm to 3 mm; preferably 1.2 mm; preferably 1.5 mm.

Optionally, the difference between the average value of the sum of the major axis and the minor axis of the ellipse of the inner conical surface of the first washer and the outer diameter of the small end surface of the cone nut ranges from 0.1 mm to 1 mm.

Optionally, the ratio of the ellipse long axis to the ellipse short axis of the inner conical surface of the first gasket is between 1.03 and 1.3; preferably, the ratio is 1.15.

Optionally, the limiting member is a hexagon nut.

In the present application, "conical surface" refers to the side of a conical structure; the large end surface refers to the bottom surface with the largest diameter of the conical structure; "minor end surface" means the bottom surface of the tapered structure having the smallest diameter.

Benefits that can be produced by the present application include, but are not limited to:

1. the utility model provides a wedge form locknut has the first packing ring of oval structure, and its minor axis both ends can be to conical nut's radial deformation force of exerting for conical nut and bolt realize radial locking.

2. The utility model provides a wedge form locknut has conical nut and the toper structure that sets up with conical nut cooperation, and the radial force is applyed to conical nut to the first packing ring of being convenient for.

3. The utility model provides a wedge form locknut, second packing ring cover are established between hexagon nut and first packing ring for the intensity of buffering cone nut and hexagon nut junction makes the radial force between cone nut and the first packing ring more stable.

4. The application provides a wedge form locknut has hexagon nut, and it is spacing to first packing ring and second packing ring, and is convenient for fasten operation and processing preparation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural view of a wedge-type locknut according to an embodiment of the present application;

FIG. 2 is a schematic top view of the nut body (a) and an axial cross-section of the nut body (b);

fig. 3 (a) is a schematic top view of the first gasket, and (b) is a schematic axial cross-sectional view of the first gasket;

FIG. 4 is (a) a schematic top view and (b) an axial cross-sectional view of the second washer;

list of parts and reference numerals:

1. conical nut, 2, hexagon nut, 3, screw hole, 4, second packing ring, 5, first packing ring.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

So that the manner in which the above recited objects, features and advantages of the present application can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The wedge-type locknut can be used in high-intensity impact and vibration work, and the structure and the using method of the wedge-type locknut are described in detail below.

Referring to fig. 1 to 4, an embodiment of the present application discloses a wedge-type locknut, which includes a nut body and a first washer 5, central axes of the nut body and the first washer being collinear; the nut main body comprises a conical nut 1 and a limiting part for limiting a first gasket, the conical nut 1 and the limiting part are integrally formed, the first gasket 5 is sleeved on the outer side of the conical nut 1, the large end face of the conical nut 1 is connected with the limiting part, and preferably but not limited, the limiting part can be set to be a hexagon nut 2, so that the fastening operation and the processing manufacture are facilitated; the first washer 5 is of an oval structure, the inner side of the oval structure is of a conical structure matched with the conical nut 1, and the taper range of the outer side of the conical nut 1 is 2-9 degrees; the taper range of the inner side of the first washer 5 is 2-9 degrees, preferably, the taper range of the outer side of the conical nut 1 is 5.3 degrees, the taper range of the inner side of the first washer 5 is 5.3 degrees, so that the first washer 5 can exert radial locking force on the conical surface of the conical nut 1, the average value of the sum of the major axis and the minor axis of the ellipse of the conical surface of the inner side of the first washer 5 is larger than the outer diameter of the small end surface of the conical nut 1, it is ensured that the first washer 5 can be sleeved on the outer side of the conical nut 1, the ratio of the outer diameter of the small end surface of the conical nut 1 to the minor axis of the ellipse of the conical surface of the inner side of the first washer 5 is 1.02-1.15, and it is ensured that the first washer 5 can exert radial locking force with proper strength on the conical surface of the conical nut 1.

Optionally, the difference between the average value of the sum of the major axis and the minor axis of the ellipse of the inner conical surface of the first washer 5 and the outer diameter of the small end surface of the conical nut 1 is in the range of 0.1-1 mm.

As an implementation mode, the wedged anti-loose nut further comprises a second washer 4, the second washer 4 is cylindrical, the second washer 4 is sleeved between the hexagon nut 2 and the first washer 5 and used for buffering the strength of the joint of the cone nut 1 and the hexagon nut 2, so that the radial force between the cone nut 1 and the first washer 5 is more stable, the inner diameter of the second washer 4 is larger than the outer diameter of the large end face of the cone nut 1, the difference range of the inner diameter of the second washer 4 and the outer diameter of the large end face of the cone nut 1 is 0.1-3 mm, preferably, the difference range of the inner diameter of the second washer 4 and the outer diameter of the large end face of the cone nut 1 is 1.2 mm, the second washer 4 can be ensured to be sleeved outside the cone nut 1, the fastening effect of the cone nut 1 and a bolt can be prevented from being influenced by overlarge gap, the ratio of the axial heights of the first washer 5 and the second washer 4 is 1.5-5, preferably, the ratio of the axial height of the first gasket 5 to the axial height of the second gasket 4 is 3.2.

As an embodiment, the sum of the axial heights of the first washer 5 and the second washer 4 is equal to the axial height of the conical nut 1, so that the maximum stress area of the conical nut 1 is ensured, and the connection stability between the wedge-type locknut and the bolt is improved.

Optionally, the ratio of the major axis to the minor axis of the ellipse of the inner side conical surface of the first washer 5 is 1.03-1.3, so that the first washer 5 is ensured to be tightly attached to the conical nut 1 in the radial direction, the conical nut 1 is firmly and reliably screwed with the bolt, and the anti-loosening effect is achieved.

In addition, the average wall thickness of the first washer 5 is larger than that of the cone nut 1, and the outer side of the first washer 5 is of an elliptic cylinder structure, so that the processing and manufacturing are convenient.

As a using method of the wedged anti-loose nut, a bolt firstly penetrates through the hexagon nut 2 and then penetrates through the cone nut 1, and then the second washer 4 and the first washer 5 are sequentially sleeved on the nut body. When the wedged locknut and the bolt are about to move relatively, the conical nut 1 continuously extrudes two end points of the elliptical short shaft on the inner side of the first washer 5, so that the first washer 5 deforms, the first washer 5 applies elastic deformation force to the radial direction of the conical nut 1 in the deformation process, the conical nut 1 continues to deform after being stressed to apply radial force to the bolt, and therefore the conical nut 1 is enabled to radially lock the bolt, and the wedged locknut and the bolt are prevented from moving relatively.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The wedged anti-loose nut is characterized by comprising a nut main body and a first washer, wherein the central axes of the nut main body and the first washer are collinear;

2. The wedged locknut of claim 1, further comprising a second washer, wherein the second washer is cylindrical, the inner diameter of the second washer is larger than the outer diameter of the large end face of the conical nut, and the ratio of the axial heights of the first washer and the second washer is between 1.5 and 5.

3. The wedged locknut of claim 1 wherein the sum of the axial heights of the first and second washers is equal to the axial height of the cone nut.

4. The wedged locknut of claim 1, wherein the taper of the outside of the conical nut ranges from 2 to 9 degrees.

5. The wedged locknut of claim 1, wherein the taper of the inside of the first washer ranges from 2 to 9 degrees.

6. The wedged locknut of claim 2, wherein the difference between the inner diameter of the second washer and the outer diameter of the large end surface of the conical nut is in the range of 0.1-3 mm.

7. The wedged locknut of claim 1, wherein the difference between the average of the sum of the major and minor axes of the ellipse of the inner conical surface of the first washer and the outer diameter of the small end surface of the conical nut is in the range of 0.1-1 mm.

8. The wedged locknut of claim 1, wherein the ratio of the major axis to the minor axis of the ellipse of the inner conical surface of the first washer is between 1.03 and 1.3.

9. The wedged locknut of claim 1, wherein the retainer is a hex nut.