Improved plug-in type locking nut

Abstract

The utility model discloses an improved plug-in type locking nut, which belongs to the technical field of nut parts, and comprises a nut inner ring, a nut outer ring fixedly arranged on the outer side surface of the nut inner ring, a thread arranged on the outer side of the nut outer ring, four arc-shaped copper sheets fixedly arranged at the bottom of the nut outer ring, and a nut inner ring fixedly arranged at the bottom of the nut outer ring, the arc-shaped copper sheets are evenly distributed at the bottom of the nut outer ring, the four arc-shaped copper sheets do not make contact with one another, the inner side faces of the arc-shaped copper sheets are smooth faces, and a plurality of metal protruding points are fixedly arranged on the outer side faces of the arc-shaped copper sheets. According to the self-locking nut, the metal protruding points on the arc-shaped copper sheets make contact with the outer contact faces of the holes, certain friction force is generated, self-locking of the nut can be achieved, the connection tightness between the nut and the holes can be effectively improved, and the stability of the bolt and the nut in the using process is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nut parts, and more particularly to an improved insert-type locking nut. Background Art

[0002] A nut is a cap that is screwed together with a bolt or screw to fasten it. It is a part that tightly connects mechanical equipment. Through the inner thread, nuts and bolts of the same specifications can be connected together. For example, an M4-P0.7 nut can only be connected with an M4-P0.7 series bolt (in the nut, M4 refers to the inner diameter of the nut is approximately 4mm, and 0.7 refers to the distance between the two thread teeth is 0.7mm). The same is true for American products. For example, a 1 / 4-20 nut can only be used with a 1 / 4-20 screw.

[0003] At present, commonly used nuts are all made of an integrated metal structure and cannot be deformed during use. When the nut is inserted into the required hole, there is still a certain gap between the nut and the hole. When the bolt or screw is subsequently screwed in, the nut and the hole will still need to be loosely connected, which will affect the stability of the bolt and nut during use.

[0004] Therefore, in view of this, the existing structure is studied and improved, and an improved insert-type locking nut is provided to achieve the purpose of having more practical value. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the present invention is to provide an improved insert-type locking nut, which can realize self-locking of the nut, effectively improve the connection tightness between the nut and the hole, and effectively ensure the stability of the bolt and nut during use.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the present invention adopts the following technical solutions.

[0009] An improved insert-type locking nut comprises a nut inner ring, a nut outer ring is fixedly provided on the outer side surface of the nut inner ring, a threaded wire is provided on the outer side of the nut outer ring, four arc-shaped copper sheets are fixedly provided on the bottom of the nut outer ring, the arc-shaped copper sheets are evenly distributed on the bottom of the nut outer ring, and the four arc-shaped copper sheets do not contact each other, the inner side surfaces of the arc-shaped copper sheets are set as smooth surfaces, and a plurality of metal protrusions are fixedly provided on the outer side surfaces of the arc-shaped copper sheets.

[0010] Furthermore, the length of the inner ring of the nut is 2.8 mm, and the height of the outer ring of the nut is in the range of 2.4 mm to 2.7 mm.

[0011] Furthermore, an arc-shaped polished opening is provided at the top end of the inner ring of the nut.

[0012] Furthermore, the thread is an M3.5-0.6 thread.

[0013] Furthermore, the thickness of the arc-shaped copper sheet is the same as the thickness of the outer ring of the nut, and the arc-shaped copper sheet has a structure that is wide at the top and narrow at the bottom.

[0014] Furthermore, the outer diameter of the upper portion of the arc-shaped copper sheet is 5.0 mm, and the outer diameter of the lower portion of the arc-shaped copper sheet when not deformed is 4.6 mm.

[0015] Furthermore, the outer diameter of the lower opening of the arc-shaped copper sheet after being compressed by touching the ground is 2 mm.

[0016] Furthermore, the number of metal bumps on each of the arc-shaped copper sheets is not less than sixteen.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] In this solution, when the nut is used, the nut is put into the corresponding hole and pressed down under the action of external force, and then a bolt is inserted into the inner ring of the nut. As the bolt moves down along the thread, it will contact the arc-shaped copper sheet. As the bolt continues to move down, the bolt will press the arc-shaped copper sheet and force the arc-shaped copper sheet to expand outward. At this time, the metal protrusions on the arc-shaped copper sheet will contact the outer contact surface of the hole and generate a certain friction force, thereby realizing self-locking of the nut. In this way, the tightness of the connection between the nut and the hole can be effectively improved, and the stability of the bolt and nut during use can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the nut in the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the nut after the bolt is inserted in the present invention;

[0022] Figure 3 It is a structural schematic diagram of the inner section of the nut in the present utility model;

[0023] Figure 4 It is a schematic diagram of the planar structure of the nut in the present utility model.

[0024] Description of the numbers in the figure:

[0025] 1. Inner ring of nut; 101. Arc-shaped polished opening; 2. Outer ring of nut; 3. Thread; 4. Arc-shaped copper sheet; 5. Smooth surface; 6. Metal bumps. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Example 1:

[0028] See also Figure 1 - Figure 4 An improved insert-type locking nut comprises a nut inner ring 1, a nut outer ring 2 is fixedly provided on the outer side of the nut inner ring 1, a threaded wire 3 is provided on the outer side of the nut outer ring 2, four arc-shaped copper sheets 4 are fixedly provided on the bottom of the nut outer ring 2, the arc-shaped copper sheets 4 are evenly distributed on the bottom of the nut outer ring 2, and the four arc-shaped copper sheets 4 do not contact each other, the inner side of the arc-shaped copper sheet 4 is set to a smooth surface 5, and a plurality of metal bumps 6 are fixedly provided on the outer surface of the arc-shaped copper sheet 4.

[0029] It can realize self-locking of the nut by making the metal protrusions on the arc-shaped copper sheet 4 contact with the outer contact surface of the hole and generate a certain friction force, which can effectively improve the connection tightness between the nut and the hole and effectively ensure the stability of the bolt and nut during use.

[0030] See Figure 1 and Figure 4 Specifically, the length of the nut inner ring 1 is 2.8 mm, and the height of the nut outer ring 2 is in the range of 2.4 mm to 2.7 mm.

[0031] The height of the control nut outer ring 2 is smaller than the nut inner ring 1. Since the thickness of the nut outer ring 2 is smaller than the nut inner ring 1, the wear on the nut outer ring 2 can be reduced.

[0032] See Figure 1 Specifically, an arc-shaped polishing opening 101 is provided at the top of the inner ring 1 of the nut.

[0033] The arc-shaped polished opening 101 facilitates the insertion of the bolt into the nut.

[0034] See Figure 1 and Figure 4 Specifically, the thread 3 is an M3.5-0.6 thread.

[0035] M3.5-0.6 thread is a common small thread specification with a standard pitch of 0.6mm and a distance between two adjacent thread peaks of 0.6mm, which ensures the tightness and stability of the threaded connection.

[0036] See Figure 1 and Figure 4 Specifically, the thickness of the arc-shaped copper sheet 4 is the same as the thickness of the outer ring 2 of the nut, and the arc-shaped copper sheet 4 is a structure that is wide at the top and narrow at the bottom.

[0037] The arc-shaped copper sheet 4 can generate a certain deformation after being compressed, thereby facilitating the arc-shaped copper sheet 4 to adhere tightly to the external contact surface under the action of friction.

[0038] See Figure 1 and Figure 4 Specifically, the outer diameter of the upper opening of the arc-shaped copper sheet 4 is 5.0 mm, and the outer diameter of the lower opening of the arc-shaped copper sheet 4 when not deformed is 4.6 mm.

[0039] See Figure 1 and Figure 4 Specifically, the outer diameter of the lower opening of the arc-shaped copper sheet 4 after being compressed by touching the ground is 2 mm.

[0040] Use a bolt that matches the inner ring 1 of the nut. When the bolt is screwed in, the bolt will generate a certain thrust on the inner side of the arc-shaped copper sheet 4, thereby causing the four arc-shaped copper sheets 4 to expand outward, thereby enhancing the friction between the contact surface between the arc-shaped copper sheet 4 and the outside, and improving the stability of the entire nut during use.

[0041] See Figure 1 and Figure 2 Specifically, the number of metal bumps 6 on each arc-shaped copper sheet 4 is not less than sixteen.

[0042] By ensuring the number of the metal protrusions 6, when the arc-shaped copper sheet 4 is unfolded, the friction area between the metal protrusions 6 and the contact surface can be effectively increased, thereby ensuring the friction force and improving the stability.

[0043] Working principle:

[0044] When the nut is used, it is put into the corresponding hole. At this time, there is a certain gap between the outer ring 2 of the nut and the inner wall of the hole. At this time, the nut is pressed down under the action of external force, and the two arc-shaped copper sheets 4 are compressed, and their lower mouths will shrink.

[0045] Then insert the bolt into the inner ring 1 of the nut, enter along the arc-shaped polished opening 101, and move down along the thread 3. During the downward movement, it will contact the smooth surface 5 of the arc-shaped copper sheet 4. As the bolt continues to move downward, the bolt will further press on the arc-shaped copper sheet 4 and force the arc-shaped copper sheet 4 to expand outward. At this time, the metal protrusions 6 on the arc-shaped copper sheet 4 will contact the outer contact surface of the hole and generate a certain friction force, thereby realizing the self-locking of the nut.

[0046] Example 2:

[0047] Based on the above embodiment 1, further description is given.

[0048] See Figure 1 and Figure 4 When the nuts are actually used, there are two types of nut models and specifications. One is an M3.5-0.6 nut, which has the same model and specifications as Example 1. The outer diameter D of the upper mouth of the arc-shaped copper sheet 4 and the outer ring 2 of the nut is 4.8 mm, and the outer diameter D1 of the lower mouth of the arc-shaped copper sheet 4 in the non-deformed state is 4.6 mm. The vertical length L of the nut is 8.0±0.1 mm, and the vertical length L1 of the arc-shaped copper sheet 4 is 5.2 mm.

[0049] The other is an M3.5-0.7 nut, the outer diameter D of the upper end of the arc-shaped copper sheet 4 and the outer ring 2 of the nut is 5.5 mm, the outer diameter D1 of the lower end of the arc-shaped copper sheet 4 in the non-deformed state is 5.2 mm, the vertical length L of the nut is 8.0±0.1 mm, and the vertical length L1 of the arc-shaped copper sheet 4 is 5.5 mm.

[0050] The two nuts are suitable for two different bolts respectively and are used in the same way.

[0051] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solution and its improved concepts shall be covered by the scope of protection of the present invention.

Claims

1. An improved insert-type locking nut, comprising a nut inner ring (1), characterized in that: The outer side surface of the nut inner ring (1) is fixedly provided with a nut outer ring (2), the outer side of the nut outer ring (2) is provided with a thread (3), the bottom of the nut outer ring (2) is fixedly provided with four arc-shaped copper sheets (4), the arc-shaped copper sheets (4) are evenly distributed on the bottom of the nut outer ring (2), and the four arc-shaped copper sheets (4) do not contact each other, the inner side surface of the arc-shaped copper sheet (4) is provided with a smooth surface (5), and the outer side surface of the arc-shaped copper sheet (4) is fixedly provided with a plurality of metal protrusions (6).

2. An improved insert-type locking nut according to claim 1, characterized in that: The length of the nut inner ring (1) is 2.8 mm, and the height of the nut outer ring (2) ranges from 2.4 mm to 2.7 mm.

3. The improved insert lock nut according to claim 1, characterized in that: The top end of the nut inner ring (1) is provided with an arc-shaped polishing opening (101).

4. The improved insert lock nut according to claim 1, characterized in that: The threaded wire (3) is an M3.5-0.6 thread.

5. The improved insert-type locking nut according to claim 1, characterized in that: The thickness of the arc-shaped copper sheet (4) is the same as the thickness of the nut outer ring (2), and the arc-shaped copper sheet (4) is a structure that is wide at the top and narrow at the bottom.

6. The improved insert-type locking nut according to claim 1, characterized in that: The outer diameter of the upper opening of the arc-shaped copper sheet (4) is 5.0 mm, and the outer diameter of the lower opening of the arc-shaped copper sheet (4) when not deformed is 4.6 mm.

7. The improved insert lock nut according to claim 1, characterized in that: The outer diameter of the lower opening of the arc-shaped copper sheet (4) after being compressed upon contact with the ground is 2 mm.

8. The improved insert-type locking nut according to claim 1, characterized in that: The number of metal protrusions (6) on each of the arc-shaped copper sheets (4) is not less than sixteen.

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