High-strength nut with high sealing performance

Abstract

The high-strength nut with the high sealing performance comprises a nut body, the nut body comprises an outer ring body and an inner ring body, a groove is formed in the outer ring body, an annular plate is arranged at the upper end of the inner ring body, the inner ring body is installed in the groove in a sliding mode, the inner wall of the outer ring body is connected with the annular plate in a sealed and sliding mode, and the outer ring body is connected with the annular plate in a sliding mode. The nut body is divided into an outer ring body and an inner ring body, a sealing ring is rotationally installed on the outer ring body, a plurality of extending anti-disengaging assemblies are arranged on the inner ring body, each extending anti-disengaging assembly comprises a spring and a limiting plate, one end of each spring is fixedly connected with the inner wall of the inner ring body, and the other end of each spring is fixedly connected with the corresponding limiting plate. The annular plate is arranged at the top end of the inner ring body, so that the annular plate is in sealed sliding connection with the inner wall of the outer ring body, and through sealed sliding connection between the annular plate and the outer ring body, the inner ring body plays a secondary sealing role through the annular plate when leakage occurs through threads.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a high-strength nut with strong sealing performance. Background Art

[0002] Nuts are a type of fastener, which generally needs to be matched with screws or bolts to fix the connection. Nuts and bolts are connected by threads. There is a gap between the threaded hole of the nut and the thread of the bolt. In places where sealing is required, since gas or liquid will pass through the threaded hole of the nut and the thread of the bolt, a sealing ring will be installed on the nut to improve the sealing by relying on the deformation of the sealing ring;

[0003] However, the nut is connected by rotation. When the sealing ring, the nut and the connection object are in contact at the same time, due to friction, the two sides of the sealing ring will be subjected to torsional forces in different rotation directions respectively. The torsional force will damage the sealing ring and reduce the sealing life. At the same time, after the nut and the bolt are connected for a long time, the sealing ring is prone to aging and cannot form a secondary seal.

[0004] In view of this, it is necessary to provide a high-strength nut with strong sealing performance. Utility Model Content

[0005] The utility model aims to provide a high-strength nut with strong sealing performance, so as to solve the problems of sealing ring deformation and inability to provide secondary protection.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a high-strength nut with strong sealing performance, including a nut body, the nut body including an outer ring body and an inner ring body, the outer ring body is provided with a groove, an annular plate is provided at the upper end of the inner ring body, the inner ring body is slidably installed in the groove, the inner wall of the outer ring body is sealingly and slidingly connected to the annular plate, a sealing ring is rotatably installed on the outer ring body, and a plurality of extended anti-slip components are provided on the inner ring body, the extended anti-slip components include a spring and a limit plate, one end of the spring is fixedly connected to the inner wall of the inner ring body, and the other end is fixedly connected to the limit plate.

[0007] The outer ring body is provided with a keyway, and the keyway is communicated with the groove.

[0008] The outer ring body is provided with an annular groove, an annular slider is rotatably mounted on the annular groove, and the upper end of the annular slider is fixedly connected to the sealing ring.

[0009] The extended anti-dropping components are distributed in a ring shape on the inner ring body.

[0010] The limiting plate is an arc-shaped plate.

[0011] The annular plate is provided with a clamping block, and the clamping block is slidably connected with the key slot.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The nut body is divided into an outer ring body and an inner ring body, and an annular plate is arranged at the top of the inner ring body, so that the annular plate is sealed and slidably connected with the inner wall of the outer ring body. When leakage occurs through the thread, the inner ring body is sealed by the annular plate;

[0014] 2. The sealing ring is rotatably arranged on the outer ring body, so that when the nut rotates, the sealing ring will rotate relative to the nut when it contacts the object, thereby reducing the torsional force on the sealing ring;

[0015] 3. Through the sliding connection between the inner ring body and the outer ring body, the same type of nut can be used for bolts of different lengths, thereby enhancing the adaptability of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the utility model (omitting the sealing ring and the annular slider);

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the extended anti-drop assembly of the utility model;

[0020] Figure 5 It is a schematic diagram of a top view and cross-section structure of the utility model;

[0021] Figure 6 This is another state structure schematic diagram of the utility model;

[0022] In the figure: 1. nut body, 11. outer ring body, 12. inner ring body, 13. sealing ring, 14. groove, 15. annular groove, 16. annular slider, 2. extended anti-drop assembly, 21. spring, 22. limit plate, 23. annular plate, 24. block. DETAILED DESCRIPTION

[0023] In order to make the purpose, advantages and technical solutions of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings 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.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] according to Figure 1-6 The present embodiment provides a high-strength nut with strong sealing performance, including a nut body 1, the nut body 1 including an outer ring body 11 and an inner ring body 12, the outer ring body 11 is provided with a groove 14, the upper end of the inner ring body 12 is provided with an annular plate 23, the inner ring body 12 is slidably installed in the groove 14, the inner wall of the outer ring body 11 is sealed and slidably connected with the annular plate 23, the outer ring body 11 is rotatably installed with a sealing ring 13, the inner ring body 12 is provided with a plurality of extended anti-slip components 2, the extended anti-slip components 2 include a spring 21 and a limit plate 2 2. One end of the spring 21 is fixedly connected to the inner wall of the inner ring body 12, and the other end is fixedly connected to the limit plate 22. By setting the sealing ring 13, it is not easy for the bolt and the nut to leak at the connection. A plurality of extended anti-detachment components 2 are set so that when the bolt is too long, the limit plate 22 is set to tighten the bolt, and at the same time, the limit plate 22 is abutted against the inner wall of the outer ring body 11, thereby strengthening the connection between the inner ring body 12 and the outer ring body 11 and preventing the bolt and the nut from loosening. By setting the inner ring body 12, the nut can be extended when in use.

[0026] The outer ring body 11 is provided with a keyway 17 which is communicated with the groove 14. The keyway 17 limits the rotation of the inner ring body 12 so that the inner ring body 12 can only slide up and down.

[0027] The outer ring body 11 is provided with an annular groove 15, on which an annular slider 16 is rotatably mounted. The upper end of the annular slider 16 is fixedly connected to the sealing ring 13 so that the sealing ring 13 can rotate relative to the nut when it is pressed against other objects.

[0028] The extended anti-dropping components 2 are distributed in a ring shape on the inner ring body 12 .

[0029] The limiting plate 22 is an arc-shaped plate, which can better fit the bolt of the diameter.

[0030] The annular plate 23 is provided with a clamping block 24 which is slidably connected with the key slot 17. By providing the key slot 17 and the clamping block 24, the inner ring body 12 can only slide up and down in the outer ring body 11 and will not rotate with the rotation of the bolt.

[0031] The specific operation is as follows: when the nut body 1 is used, the bolt is passed through the nut body 1, and the bolt and the nut body 1 are continuously tightened through threaded connection. At the same time, when the sealing ring 13 arranged on the outer ring body 11 is squeezed, the annular groove 15 opened on the outer ring body 11 through the annular slider 16 installed on the sealing ring 13 continuously rotates relative to each other, so that the sealing ring 13 will not be subjected to the torsional force when the nut body 1 and the bolt rotate. When the bolt and the nut body 1 are continuously tightened, the inner ring body 12 will be tightened and extended against the inner ring body 12 after the bolt length reaches a certain length, so that the nut body 1 as a whole is extended. At the same time, the limit plate 22 will pop out and contact with the bolt under the elastic force of the spring 21 arranged on the inner ring body 12. At the same time, the limit plate 22 will be clamped to the inner wall of the outer ring body 11, making it more difficult to loosen, thereby strengthening the connection between the bolt and the nut body 1.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-strength nut with strong sealing performance, comprising a nut body (1), characterized in that: The nut body (1) comprises an outer ring body (11) and an inner ring body (12), the outer ring body (11) being provided with a groove (14), the upper end of the inner ring body (12) being provided with an annular plate (23), the inner ring body (12) being slidably mounted in the groove (14), the inner wall of the outer ring body (11) being sealingly and slidably connected to the annular plate (23), the outer ring body (11) being rotatably mounted with a sealing ring (13), the inner ring body (12) being provided with a plurality of extended anti-slipping components (2), the extended anti-slipping components (2) comprising a spring (21) and a limiting plate (22), one end of the spring (21) being fixedly connected to the inner wall of the inner ring body (12), and the other end of the spring (21) being fixedly connected to the limiting plate (22).

2. A high-strength nut with strong sealing performance according to claim 1, characterized in that: A key groove (17) is formed on the outer ring body (11), and the key groove (17) is communicated with the groove (14).

3. A high-strength nut with strong sealing performance according to claim 1, characterized in that: The outer ring body (11) is provided with an annular groove (15), an annular slider (16) is rotatably mounted on the annular groove (15), and the upper end of the annular slider (16) is fixedly connected to the sealing ring (13).

4. A high-strength nut with strong sealing performance according to claim 1, characterized in that: The extended anti-dropping components (2) are distributed in a ring shape on the inner ring body (12).

5. A high-strength nut with strong sealing performance according to claim 1, characterized in that: The limiting plate (22) is an arc-shaped plate.

6. A high-strength nut with strong sealing performance according to claim 2, characterized in that: A clamping block (24) is provided on the annular plate (23), and the clamping block (24) is slidably connected to the key slot (17).

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