Matching nut

Abstract

The utility model relates to the technical field of nuts, and discloses a matching nut which comprises a main nut and a first screw hole formed in the main nut, and further comprises a locking nut matched with the main nut for limiting. The locking ring is extruded to move towards the interior of the horn hole, the gap of the through groove is gradually reduced, the hole distance of the second screw hole is gradually reduced, the thread of the second screw hole cannot be matched with the thread on the screw rod, the main nut is continuously screwed, and the second screw hole and the thread, close to the second screw hole area, of the screw rod are mutually extruded and damaged; the fixing effect of the matched nut and the screw on a fixed object is achieved, due to the fact that threads, close to the second screw hole area, of the second screw hole and the screw rod can be mutually extruded and damaged, the locking nut cannot be loosened, and the fixing stability of the matched nut can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to mating nuts. Background Technology

[0002] A nut is a fastening component that is screwed onto a bolt or threaded rod. It is typically made of materials such as carbon steel, stainless steel, or non-ferrous metals, and is widely used in various mechanical equipment, making it an indispensable element in manufacturing.

[0003] Chinese invention patent CN103629222A discloses a nut comprising a main body, the interior of which, along its axial direction from top to bottom, includes a first sleeve, a threaded hole, and a second sleeve. The inner walls of the first and second sleeves are smooth, and the inner wall of the threaded hole is threaded. Because the main body and sleeve are integrally formed, there is no need to check the tightness of the sleeve and main body during installation, simplifying the installation process. The sleeve and main body will not become loose, preventing misalignment and friction between the connected parts, thus effectively avoiding wear on the connected parts.

[0004] The aforementioned patents have optimized the nut technology solution from the perspective of simplifying the installation process. However, nuts in the existing technology generally have the technical problem of being easy to loosen after installation. Therefore, there is an urgent need in the field to solve the above problems with nuts. Utility Model Content

[0005] The purpose of this invention is to provide a mating nut to solve the technical problem that nuts are easy to loosen after installation in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The mating nut includes a main nut and a first threaded hole opened inside the main nut. The mating nut also includes a locking nut that mates with and limits the main nut.

[0008] The main nut has a flared hole at one end in the axial direction of the first screw hole, and the small-diameter end of the flared hole is connected to the end of the first screw hole.

[0009] The locking nut has a second screw hole inside. A locking ring is fixed to one end of the locking nut in the axial direction of the second screw hole. The outer wall of the locking ring is flared, and the locking ring can be inserted into the flared hole and the outer wall of the locking ring can be in close contact with the inner wall of the flared hole. In the axial direction of the second screw hole, a through groove is provided to pass through the locking nut and the locking ring, so that when the locking nut is compressed, the locking nut can be deformed by changing the size of the through groove.

[0010] As a preferred embodiment, the locking nut and the locking ring are integrally formed.

[0011] As a preferred embodiment, the thickness of the locking nut is ≤8 mm.

[0012] As a preferred embodiment, the thickness of the locking nut is 4 mm.

[0013] As a preferred embodiment, the cross-section of the outer wall of the locking nut perpendicular to the axis of the second screw hole is a regular hexagon.

[0014] As a preferred embodiment, the cross-section of the outer wall of the locking nut perpendicular to the axis of the second screw hole is circular.

[0015] As a preferred embodiment, the cross-section of the outer wall of the main nut perpendicular to the axis of the first screw hole is a regular hexagon.

[0016] Beneficial effects: When using a locking nut, the screw shank passes through the object being fixed, with the limiting end of the screw tightly against the object. Then, the locking nut is threaded onto the screw shank, with the locking ring located on the side of the locking nut furthest from the object. Next, the main nut is threaded onto the screw shank, causing the locking ring to be inserted into the flared hole, with its outer wall tightly against the inner wall of the flared hole. At this point, the locking nut remains unchanged, and the locking ring is not fully inserted into the flared hole. As the main nut is tightened further, the locking nut gradually experiences the clamping force between the main nut and the object being fixed. As the screw increases, the locking ring is compressed and continues to move inward toward the flared hole. The gap in the through groove gradually narrows, and the hole spacing of the second screw hole gradually decreases. At this point, the thread of the second screw hole can no longer match the thread on the screw rod. If the main nut is tightened further, the threads of the second screw hole and the screw rod near the second screw hole area will be squeezed and destroyed. This completes the fixing effect of the mating nut and screw on the fixed object. Because the threads of the second screw hole and the screw rod near the second screw hole area will be squeezed and destroyed, the locking nut cannot be loosened, which can effectively improve the fixing stability of the mating nut. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided in Embodiment 1 of the present utility model;

[0019] Figure 2 This is a front sectional view of the overall structure provided in Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the main nut structure provided in Embodiment 1 of this utility model;

[0021] Figure 4 This is a schematic diagram of the main nut structure at another angle provided in Embodiment 1 of this utility model;

[0022] Figure 5 This is a front sectional view of the main nut provided in Embodiment 1 of this utility model;

[0023] Figure 6 This is a schematic diagram of the locking nut structure provided in Embodiment 1 of this utility model;

[0024] Figure 7 This is a front sectional view of the locking nut provided in Embodiment 1 of this utility model;

[0025] Figure 8 This is a front sectional view of the overall structure provided in Embodiment 2 of this utility model;

[0026] Figure 9 This is a schematic diagram of the locking nut structure provided in Embodiment 2 of this utility model;

[0027] Figure 10 This is a schematic diagram of the locking nut structure provided in Embodiment 3 of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 101. Main nut; 102. First screw hole; 103. Flared hole; 201. Locking nut; 202. Locking ring; 203. Second screw hole; 204. Through groove. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] like Figures 1-7 As shown, the mating nut provided in Embodiment 1 of this utility model includes a main nut 101 and a first screw hole 102 opened inside the main nut 101. The mating nut also includes a locking nut 201 that cooperates with and limits the main nut 101.

[0032] The main nut 101 has a flared hole 103 at one end in the axial direction of the first screw hole 102, and the small-diameter end of the flared hole 103 is connected to the end of the first screw hole 102.

[0033] The locking nut 201 has a second screw hole 203 inside. A locking ring 202 is fixed to one end of the locking nut 201 along the axis of the second screw hole 203. The outer wall of the locking ring 202 is flared, and the locking ring 202 can be inserted into the flared hole 103, and the outer wall of the locking ring 202 can be tightly attached to the inner wall of the flared hole 103. A through groove 204 is provided along the axis of the second screw hole 203, penetrating the locking nut 201 and the locking ring 202. When the locking nut 201 is compressed, it can deform by changing the size of the through groove 204. When using the mating nut, the screw shank passes through the object being fixed, with the limiting end of the screw in close contact with the object. Then, the locking nut 201 is threaded onto the screw shank, with the locking ring 202 located on the side of the locking nut 201 away from the object being fixed. Then, the main nut 101 is threaded onto the screw shank, causing the locking ring 202 to be inserted into the flared hole 1. Inside 03, the outer wall of the locking ring 202 is tightly attached to the inner wall of the flared hole 103. At this time, the locking nut 201 is not deformed. At this time, the locking ring 202 has not completely entered the flared hole 103. If the main nut 101 is tightened, the clamping force between the main nut 101 and the fixed object gradually increases. The locking ring 202 is squeezed and continues to move towards the inside of the flared hole 103. The gap of the through groove 204 gradually decreases, and the hole spacing of the second screw hole 203 gradually decreases. At this time, the thread of the second screw hole 203 can no longer match the thread on the screw. If the main nut 101 is tightened, the threads of the second screw hole 203 and the screw near the second screw hole 203 will squeeze and destroy each other. The fixing effect of the fixed object is completed by using the mating nut and screw. Because the threads of the second screw hole 203 and the screw near the second screw hole 203 will squeeze and destroy each other, the locking nut 201 cannot be loosened, which effectively improves the fixing effect of the mating nut.

[0034] The locking nut 201 and the locking ring 202 are integrally formed.

[0035] The thickness of the locking nut 201 is 8 mm; in another embodiment 2, such as Figure 8 , Figure 9 As shown, the thickness of the locking nut 201 is 4 mm. Because this solution achieves a stabilizing effect by disrupting the thread structure, the rigidity requirement of the locking nut 201 is low, which can reduce material costs.

[0036] The outer wall of the locking nut 201 has a regular hexagonal cross-section perpendicular to the axis of the second screw hole 203; in another embodiment 3, such as Figure 10 As shown, the cross-section of the outer wall of the locking nut 201 perpendicular to the axis of the second screw hole 203 is circular.

[0037] The cross-section of the outer wall of the main nut 101 perpendicular to the axis of the first screw hole 102 is a regular hexagon.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mating nut, comprising a main nut (101) and a first threaded hole (102) formed inside the main nut (101), characterized in that: The mating nut also includes a locking nut (201) that mates with and limits the main nut (101); The main nut (101) has a flared hole (103) at one end of the first screw hole (102) along the axial direction, and the small-diameter end of the flared hole (103) is connected to the end of the first screw hole (102); The locking nut (201) has a second screw hole (203) inside. A locking ring (202) is fixed at one end of the locking nut (201) in the axial direction of the second screw hole (203). The outer wall of the locking ring (202) is flared, and the locking ring (202) can be inserted into the flared hole (103). In the axial direction of the second screw hole (203), a through groove (204) is provided to pass through the locking nut (201) and the locking ring (202).

2. The mating nut according to claim 1, characterized in that: The locking nut (201) and the locking ring (202) are integrally formed.

3. The mating nut according to claim 1, characterized in that: The thickness of the locking nut (201) is ≤8 mm.

4. The mating nut according to claim 3, characterized in that: The thickness of the locking nut (201) is 4 mm.

5. The mating nut according to claim 1, characterized in that: The cross-section of the outer wall of the locking nut (201) perpendicular to the axis of the second screw hole (203) is a regular hexagon.

6. The mating nut according to claim 1, characterized in that: The outer wall of the locking nut (201) has a circular cross-section perpendicular to the axis of the second screw hole (203).

7. The mating nut according to claim 1, characterized in that: The cross-section of the outer wall of the main nut (101) perpendicular to the axis of the first screw hole (102) is a regular hexagon.

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