Step nut with locking structure

Abstract

The step nut with the locking structure comprises a nut body, the nut body comprises a first nut body and a second nut body, a deformation groove is formed in the side face of the first nut body, a protruding extrusion portion is arranged on one end face of the first nut body, and the extrusion portion and the deformation groove are correspondingly arranged. After the first nut is screwed, the extrusion portion is extruded to deform towards the interior of the deformation groove, so that the first nut and the thread teeth of the bolt tend to be staggered, locking force is formed, the locking capacity of the nut is improved, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a step nut with a locking structure. Background Art

[0002] The working principle of the nut is to use the friction between the nut and the bolt for self-locking. However, the reliability of this self-locking will be reduced due to the influence of vibration. In some important occasions, we will take some anti-loosening measures to ensure the reliability of the nut locking. Locking nuts are one of the anti-loosening measures.

[0003] In the prior art, it is common to add some auxiliary accessories to the nut to assist the nut in achieving a better locking function. For example, the locking nut disclosed in the patent authorization announcement number CN 218151962 U is provided with a locking spring sheet and a support column to assist the nut in locking. This structure is complex and the manufacturing cost is high. Utility Model Content

[0004] In view of the problems pointed out in the background technology, the utility model proposes a step nut with a locking structure to solve the above technical problems.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A step nut with a locking structure comprises a nut body, wherein the nut body comprises a first nut and a second nut, a deformation groove is provided on the side of the first nut, a protruding extrusion portion is provided on one end face of the first nut, and the extrusion portion is arranged corresponding to the deformation groove.

[0007] The utility model is further configured that the first nut is in a circular ring shape, the deformation groove is in a semicircular ring shape, and the deformation groove is connected to the interior of the first nut.

[0008] The utility model is further configured that the extrusion portion is in a semicircular ring shape, and the thickness of the extrusion portion is smaller than the width of the deformation groove in the axial direction of the first nut.

[0009] The utility model is further configured such that the thickness of the extrusion portion gradually decreases from the middle to both ends.

[0010] The utility model is further configured such that the first nut and the second nut are separately configured.

[0011] The utility model is further configured such that the first nut and the second nut are integrally configured, and the other end face of the first nut is fixedly connected to the second nut.

[0012] The utility model is further configured that the second nut is a hexagonal nut, and the outer diameter of the second nut is greater than the outer diameter of the first nut.

[0013] The utility model is further configured such that the width of the deformation groove in the axial direction of the first nut gradually decreases from the middle to both ends.

[0014] The utility model is further configured that protruding extrusion parts are provided on the two end surfaces of the first nut.

[0015] The utility model is further configured such that the width of the deformation groove in the axial direction of the first nut gradually decreases from the middle to both ends.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0017] The step nut with a locking structure provided by the utility model has a first nut whose extrusion portion is squeezed and deformed into the deformation groove after being tightened, so that the thread teeth of the first nut and the bolt tend to be misaligned, thereby forming a locking force and improving the locking ability of the nut. The structure is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic diagram of the structure of Example 1 of the utility model.

[0020] Figure 2 It is a cross-sectional view of Example 1 of the utility model.

[0021] Figure 3 This is a schematic diagram of the structure of Example 2 of the utility model.

[0022] Figure 4 This is a schematic diagram of the structure of Example 3 of the utility model.

[0023] Description of the reference numerals in the accompanying drawings: first nut 1; second nut 2; deformation groove 3; extrusion portion 4. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] For reference Figure 1-4 The utility model is described as follows:

[0026] Embodiment 1: A step nut with a locking structure comprises a nut body, the nut body comprising a first nut 1 and a second nut 2, the first nut 1 is a circular ring, the second nut 2 is a hexagonal nut, the outer diameter of the second nut 2 is larger than the outer diameter of the first nut 1, the inner diameter of the first nut 1 is the same as the inner diameter of the second nut 2, the inner side walls of the first nut 1 and the second nut 2 are both provided with internal threads, and the first nut 1 and the second nut 2 are integrally arranged.

[0027] A deformation groove 3 is provided on the outer side of the first nut 1. The deformation groove 3 is in a semicircular shape and is connected to the interior of the first nut 1. The axial width of the deformation groove 3 gradually decreases from the middle to both ends of the first nut 1.

[0028] A protruding extrusion portion 4 is provided on one end face of the first nut 1, and the other end face of the first nut 1 is fixedly connected to the second nut 2. The extrusion portion 4 is provided corresponding to the deformation groove 3, and the extrusion portion 4 is a semicircular ring. The thickness of the extrusion portion 4 is smaller than the axial width of the deformation groove 3 in the first nut 1, and the thickness of the extrusion portion 4 gradually decreases from the middle to both ends.

[0029] By adopting the above technical solution, the nut body is connected to the bolt, and the second nut 2 is tightened using a wrench tool. As the nut is tightened, the extrusion portion 4 on the first nut 1 is squeezed against the fixed part, and the position of the extrusion portion 4 on the first nut 1 is deformed toward the deformation groove 3. In this way, the thread tooth structure of the first nut 1 and the bolt tends to be misaligned, thereby forming a locking force.

[0030] Embodiment 2: The difference from Embodiment 1 is that the first nut 1 and the second nut 2 of Embodiment 2 are arranged separately. The extrusion portion 4 can be arranged toward the second nut 2 or away from the second nut 2.

[0031] Embodiment 3: The difference from Embodiment 1 is that the two end faces of the first nut 1 of Embodiment 2 are respectively provided with protruding extrusion portions 4.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A step nut with a locking structure, comprising a nut body, characterized in that: The nut body comprises a first nut and a second nut, a deformation groove is arranged on the side of the first nut, a protruding extrusion portion is arranged on one end face of the first nut, and the extrusion portion is arranged corresponding to the deformation groove.

2. The step nut with a locking structure according to claim 1, characterized in that: The first nut is in the shape of a circular ring, the deformation groove is in the shape of a semicircular ring, and the deformation groove is connected to the interior of the first nut.

3. The step nut with a locking structure according to claim 2, characterized in that: The extrusion portion is in the shape of a semicircular ring, and the thickness of the extrusion portion is smaller than the width of the deformation groove in the axial direction of the first nut.

4. The step nut with a locking structure according to claim 3, characterized in that: The thickness of the extrusion portion gradually decreases from the middle to both ends.

5. The step nut with a locking structure according to claim 4, characterized in that: The first nut and the second nut are separately arranged.

6. The step nut with a locking structure according to claim 4, characterized in that: The first nut and the second nut are integrally arranged, and the other end surface of the first nut is fixedly connected to the second nut.

7. A step nut with a locking structure according to claim 5 or 6, characterized in that: The second nut is a hexagonal nut, and the outer diameter of the second nut is greater than the outer diameter of the first nut.

8. The step nut with a locking structure according to claim 7, characterized in that: The width of the deformation groove in the axial direction of the first nut gradually decreases from the middle to both ends.

9. The step nut with a locking structure according to claim 5, characterized in that: The two end surfaces of the first nut are provided with protruding extrusion parts.

10. The step nut with a locking structure according to claim 9, characterized in that: The width of the deformation groove in the axial direction of the first nut gradually decreases from the middle to both ends.

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