Self-locking joint nut assembly

Abstract

The utility model discloses a self-locking joint nut assembly, and relates to the technical field of joint nuts, in particular to the self-locking joint nut assembly. An open slotted hole with an open front end is formed in the upper part of a non-threaded end of a jacket nut, and a bent through slotted hole with an open bottom is formed in the lower part of the non-threaded end of the jacket nut; the self-locking joint nut assembly further comprises a clamping jaw. And the clamping jaw is arranged in the outer sleeve nut through the bent through groove hole, is clamped on the open groove hole and is suspended in the non-threaded end of the outer sleeve nut. The clamping jaw is of an arc-shaped thin locking plate structure with an opening in the lower portion, a clamping jaw head with a V-shaped groove is machined on the upper portion of the clamping jaw, and the clamping jaw is installed on the open groove hole through the clamping jaw head. The notch width of the bent through groove hole is slightly larger than the outer diameter width of the clamping jaw. According to the technical scheme, the problems that in the prior art, after the outer sleeve nut is anodized, the surface of the outer sleeve nut is brittle and hard, the punching position is prone to cracks during punching, and the punching position, depth, size and the like are difficult to be consistent in technical state are solved.

Description

Technical Field

[0001] The utility model discloses a self-locking joint nut assembly, which relates to the technical field of joint nuts, and in particular to a self-locking joint nut assembly. Background Art

[0002] In the aviation hydraulic piping system, the pipelines are connected and sealed through threaded pairs and sealing surfaces. After the threads are tightened, the traditional thread locking method is to use a safety wire to pass through the threading hole of the threaded connection pair and screw the safety wire in a specific way to prevent the threads from loosening. At present, the safety wire anti-loosening method is rarely used abroad. Since the 1970s, foreign countries have begun to study the integration of claw locking plates (hereinafter referred to as "claws") into the outer nut, and the anti-loosening function is achieved by the engagement of the claw protrusion with the flat nozzle tooth ring. After the claw is installed in the outer nut, it is necessary to punch a hole at the end of the outer nut (material TC6). Punching the hole causes local permanent deformation of the outer nut, thereby limiting the claw in the outer nut. This solution has disadvantages. Since the outer nut is anodized, its surface is brittle and hard, and cracks are easily generated at the punching site during punching. In addition, it is difficult to achieve technical consistency in the punching position, depth, size, etc. Based on this, the R&D personnel optimized the assembly of the claw and the outer nut, limiting the claw in the outer nut through other forms, replacing the punching process on the outer nut, improving the reliability of the product and reducing the difficulty of the product's processing technology.

[0003] In view of the problems existing in the above-mentioned prior art, it is very necessary to research and design a new type of self-locking joint nut assembly to overcome the problems existing in the prior art. Summary of the Invention

[0004] To address the technical issues raised in the prior art, such as the brittle surface of anodized outer nuts, the tendency for cracks to form during punching, and the difficulty in achieving consistent punching positions, depths, and sizes, a self-locking joint nut assembly is provided. This utility model primarily replaces the punching process on the outer nut by adjusting the claw head and utilizing the elastic deformation of the metal to embed the claw into the outer nut. This ensures that the claw can move freely within a certain range within the outer nut, improving product reliability and reducing the difficulty of manufacturing the product.

[0005] The technical means adopted by this utility model are as follows:

[0006] A self-locking joint nut assembly includes a jacket nut;

[0007] Furthermore, the upper portion of the non-threaded end of the outer nut is processed with an open slot with an open front end, and the lower portion is processed with a curved through slot with an open bottom;

[0008] Furthermore, the self-locking joint nut assembly further includes a claw;

[0009] Furthermore, the claw is installed in the outer nut by bending through the slot, clamped on the open slot, and suspended inside the non-threaded end of the outer nut.

[0010] Furthermore, the claw is an arc-shaped thin locking plate structure with an open bottom, a claw head is processed on the upper part, and is installed on the open slot through the claw head and suspended inside the non-threaded end of the outer nut.

[0011] Furthermore, a V-shaped groove is processed in the middle of the top of the claw head. With the elasticity of the V-shaped groove, the claw head is clamped on the upper surface of the upper open slot hole to achieve the upper and lower and front and back positioning of the claw.

[0012] Furthermore, the bottom of the V-shaped groove is a circular transition.

[0013] Furthermore, the outer sides of both ends of the claw head are processed into a snap-fit ​​structure for being snapped onto the upper end of the open slot.

[0014] Furthermore, the slot width of the curved through slot is slightly larger than the outer diameter width of the claw, so that the claw can pass through the curved through slot into the outer sleeve nut for assembly.

[0015] The installation process of this utility model is:

[0016] When installing the claw to the outer nut, first pass the claw under the outer nut. After the claw is completely inserted into the outer nut, the head of the claw contacts the bottom of the upper square hole of the non-threaded end of the outer nut. Since the two sides of the claw head are "snap-type" structures, external force is required to press the head of the claw into the upper square hole of the non-threaded end of the outer nut. During the pressing process, the head of the claw undergoes elastic deformation. After the pressing is completed, the elastic deformation of the head of the claw disappears, and the snaps on both sides of the head are stuck on the upper surface of the square hole of the non-threaded end of the outer nut.

[0017] When in use, the claws are installed on the non-threaded side of the outer nut to achieve up and down and front and back limiting.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The self-locking joint nut assembly provided by the utility model realizes the assembly and positioning of the claw and the outer nut by arranging an elastic V-shaped groove structure on the head of the claw.

[0020] 2. The self-locking joint nut assembly provided by the present invention has a V-groove structure whose bottom is processed into a circular transition, thereby increasing the elasticity of the claw head.

[0021] In summary, the technical solution of the present invention solves the problems in the prior art that the surface of the outer nut becomes brittle and hard after anodizing, cracks are easily generated at the punching position during punching, and the punching position, depth, size, etc. are difficult to achieve technical consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 This is a side view of the utility model;

[0025] Figure 3 This is a schematic diagram of the assembly of the claw head and the open slot of the utility model;

[0026] Figure 4 This is a schematic diagram of the claw structure of the utility model;

[0027] Figure 5 This is a side view of the clamping claw of the utility model;

[0028] Figure 6 This is a three-dimensional diagram of the outer nut of the utility model;

[0029] Figure 7 This is a three-dimensional diagram of the existing structure.

[0030] In the figure: 100, outer sleeve nut 110, open slot 120, claw 130, claw head 140, curved through slot. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technology, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0035] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0037] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0038] As shown in the figure, the utility model provides a self-locking joint nut assembly, including an outer sleeve nut 100; the upper part of the non-threaded end of the outer sleeve nut 100 is processed with an open slot 110 with an open front end, and the lower part is processed with a curved through slot 140 with an open bottom; the self-locking joint nut assembly also includes a claw 120; the claw 120 is inserted into the outer sleeve nut 100 through the curved through slot 140, is clamped on the open slot 110, and is suspended inside the non-threaded end of the outer sleeve nut 100.

[0039] The claw 120 is an arc-shaped thin locking plate structure with an open bottom. A claw head 130 is processed on the upper part. The claw head 130 is installed on the open slot 110 and is suspended inside the non-threaded end of the outer nut 100.

[0040] A V-shaped groove is processed in the middle of the top of the claw head 130. With the elasticity of the V-shaped groove, the claw head 130 is clamped on the upper surface of the upper open slot hole 110 to achieve the upper and lower and front and back limiting of the claw 120.

[0041] The bottom of the V-groove is a rounded transition.

[0042] The outer sides of both ends of the claw head 130 are processed into a snap-fit ​​structure for being snapped onto the upper end of the open slot 110 .

[0043] The slot width of the curved through slot 140 is slightly larger than the outer diameter of the claw 120 , so that the claw 120 can pass through the curved through slot 140 and be assembled into the outer sleeve nut 100 .

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking joint nut assembly, comprising a jacket nut (100); characterized in that: The upper portion of the non-threaded end of the outer sleeve nut (100) is processed with an open slot (110) with an open front end, and the lower portion is processed with a curved through slot (140) with an open bottom; The self-locking joint nut assembly further includes a claw (120); The clamping claw (120) is inserted into the outer nut (100) through the curved through slot (140), clamped on the open slot (110), and suspended inside the non-threaded end of the outer nut (100).

2. The self-locking joint nut assembly according to claim 1, characterized in that: The claw (120) is a thin arc-shaped locking plate structure with an opening at the bottom, and a claw head (130) is processed on the upper part. It is installed on the open slot (110) through the claw head (130) and is suspended inside the non-threaded end of the outer nut (100).

3. The self-locking joint nut assembly according to claim 2, characterized in that: A V-shaped groove is processed in the middle of the top of the claw head (130). The claw head (130) is clamped on the upper surface of the upper open slot (110) by virtue of the elasticity of the V-shaped groove, thereby achieving the upper and lower and front and back limiting of the claw (120).

4. The self-locking joint nut assembly according to claim 3, characterized in that: The bottom of the V-shaped groove is a circular transition.

5. The self-locking joint nut assembly according to claim 2, characterized in that: The outer sides of both ends of the claw head (130) are processed into buckle-type structures for being clamped on the upper end of the open slot (110).

6. The self-locking joint nut assembly according to claim 1, characterized in that: The slot width of the curved through slot (140) is slightly larger than the outer diameter width of the claw (120), so that the claw (120) can pass through the curved through slot (140) and enter the outer sleeve nut (100) for assembly.

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