Fastener with good sealing performance

Abstract

The utility model discloses a fastener with good sealing performance, which comprises a screw rod, an external thread is arranged on the outer side of the screw rod, a nut is arranged on the outer side of the screw rod, a thread groove is arranged in the nut and is in threaded connection with the outer side of the external thread, a first connecting piece is arranged on the outer side of the screw rod, and a second connecting piece is arranged on the outer side of the screw rod. And internal threads are arranged in the first connecting piece and the second connecting piece, the internal threads are in threaded connection with the external threads, and sealing assemblies are arranged on one side of the first connecting piece and one side of the second connecting piece. The utility model aims to solve the problems that rainwater permeates into a threaded hole through a gap of a bolt or a nut, so that the bolt is rusted, the strength and the durability of the bolt are reduced, and the bearing capacity and the service life of the bolt are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with good sealing performance. Background Technique

[0002] Fasteners include bolts. A bolt is a mechanical part, a cylindrical threaded fastener used with a nut. It is a type of fastener composed of two parts: a head and a screw rod (a cylinder with external threads). It needs to cooperate with a nut to be used for firmly connecting two parts with through holes. This connection form is called bolt connection. If the nut is screwed off the bolt, the two parts can be separated, so bolt connection belongs to detachable connection.

[0003] When traditional bolts are installed, they are installed and fastened through the cooperation of bolts and nuts. However, when used outdoors and in rainy weather, rainwater will penetrate into the threaded holes through the gaps of the bolts or nuts, causing the bolts to rust, thereby reducing the strength and durability of the bolts, and thus affecting their load-bearing capacity and service life. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fastener with good sealing performance to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: It includes a screw rod, an external thread is arranged on the outer side of the screw rod, a nut is arranged on the outer side of the screw rod, a thread groove is arranged inside the nut and is threadedly connected to the outer side of the external thread, a first connecting piece is arranged on the outer side of the screw rod, a second connecting piece is arranged on the outer side of the screw rod, internal threads are arranged inside both the first connecting piece and the second connecting piece, the internal threads are threadedly connected to the external thread, and sealing components are arranged on one side of both the first connecting piece and the second connecting piece.

[0006] As a further preference of this technical scheme, the sealing component includes a first sealing cap, the first sealing cap is fixedly connected to one side of the first connecting piece, and a first sealing groove is opened inside the first sealing cap.

[0007] As a further preference of this technical scheme, the sealing component further includes a second sealing ring, and the second sealing ring is arranged inside the first sealing groove.

[0008] As a further preference of this technical scheme, a second sealing cap is fixedly connected to one side of the second connecting piece, and a second sealing groove is opened on one side of the second sealing cap.

[0009] As a further preference of this technical scheme, a first sealing ring is arranged inside the second sealing groove.

[0010] As a further preference of the present technical solution, a hydrophobic cap is fixedly connected to the top of the screw.

[0011] As a further preference of the present technical solution, the first sealing cap is shaped like a cone.

[0012] The utility model provides a fastener with good sealing performance, having the following beneficial effects:

[0013] (1) The utility model can seal the top and bottom of the screw through the sealing component. Firstly, the overall tightness of the screw is ensured by the sealing component. Secondly, it can prevent rainwater from staying outside the sealing component, thereby avoiding the problem that rainwater seeps into the threaded hole through the gaps of the bolt or nut, causing the bolt to rust, reducing the strength and durability of the bolt, and thus affecting its load-bearing capacity and service life.

[0014] (2) By arranging a hydrophobic cap at the top of the screw, the utility model can effectively prevent rainwater from staying at the top of the screw, then avoid the difficulty of disassembly and maintenance caused by the rust of the screw, and further increase the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 is an exploded three-dimensional structural diagram of the utility model;

[0017] Figure 3 is a top view structural diagram of the first sealing cap of the utility model;

[0018] Figure 4 is a bottom view structural diagram of the first sealing cap of the utility model;

[0019] In the figure: 1, screw; 2, first sealing cap; 3, external thread; 4, second sealing cap; 5, nut; 6, hydrophobic cap; 7, first sealing ring; 8, second sealing ring; 9, internal thread; 10, first connecting piece; 11, first sealing groove; 12, second sealing groove; 13, second connecting piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model.

[0021] The utility model provides a technical solution: As Figures 1-4As shown in the figure, in this embodiment, a fastener with good sealing performance includes a screw 1. An external thread 3 is provided on the outer side of the screw 1. A nut 5 is provided on the outer side of the screw 1. A thread groove is provided inside the nut 5 and is threadedly connected to the outer side of the external thread 3. A first connecting member 10 is provided on the outer side of the screw 1. A second connecting member 13 is provided on the outer side of the screw 1. Internal threads 9 are provided inside both the first connecting member 10 and the second connecting member 13, and the internal threads 9 are threadedly connected to the external thread 3. Sealing assemblies are provided on one side of both the first connecting member 10 and the second connecting member 13. A hydrophobic cap 6 is fixedly connected to the top of the screw 1.

[0022] First, during installation, the first connecting member 10 is installed on the outer side of the screw 1. Then the screw 1 is passed through the threaded hole. Next, the second connecting member 13 is installed on the outer side of the screw 1. At this time, the sealing assemblies can seal the top and bottom of the screw 1. The sealing assemblies first ensure the overall tightness of the screw 1. Secondly, they can prevent rainwater from staying outside the sealing assemblies, thereby avoiding the problem that rainwater may penetrate into the threaded hole through the gaps of the bolt or the nut 5, causing the bolt to rust, reducing the strength and durability of the bolt, and thus affecting its load-bearing capacity and service life. Then, the nut 5 is installed on the outer side of the screw 1 to further fix the sealing assemblies. Finally, since the hydrophobic cap 6 is provided at the top of the screw 1, it can effectively prevent rainwater from staying on the top of the screw 1, and then avoid the difficulty of disassembly and maintenance caused by the rust of the screw 1, thereby increasing the practicality of the device.

[0023] As Figures 1-4 shown, the sealing assembly includes a first sealing cap 2. The first sealing cap 2 is fixedly connected to one side of the first connecting member 10. A first sealing groove 11 is formed inside the first sealing cap 2. The sealing assembly further includes a second sealing ring 8. The second sealing ring 8 is arranged inside the first sealing groove 11. A second sealing cap 4 is fixedly connected to one side of the second connecting member 13. A second sealing groove 12 is formed on one side of the second sealing cap 4. A first sealing ring 7 is arranged inside the second sealing groove 12. A hydrophobic cap 6 is fixedly connected to the top of the screw 1.

[0024] During sealing, the first sealing ring 7 and the second sealing ring 8 are respectively snapped into the first sealing groove 11 and the second sealing groove 12. Then, by rotating the first connecting member 10 and the second connecting member 13, the outer side of the screw 1 is sealed. Furthermore, since the shapes of the first sealing cap 2 and the second sealing cap 4 are conical, rainwater is prevented from staying outside, thereby reducing the possibility of rainwater entering the internal threaded hole.

[0025] The utility model provides a fastener with good sealing performance, and the specific working principle is as follows: First, the first sealing ring 7 and the second sealing ring 8 are respectively clamped into the inside of the first sealing groove 11 and the second sealing groove 12. Then, during installation, the first connecting piece 10 is installed on the outside of the screw rod 1, and then the screw rod 1 is passed through the threaded hole. Next, the second connecting piece 13 is installed on the outside of the screw rod 1. Then, a nut 5 is installed on the outside of the screw rod 1 to increase the fastening property of the screw rod 1. Finally, a hydrophobic cap 6 is arranged at the top of the screw rod 1, which can effectively prevent rainwater from staying on the top of the screw rod 1.

[0026] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fastener with good sealing performance, comprising a screw (1), characterized in that: The outer side of the screw rod (1) is provided with an external thread (3), the outer side of the screw rod (1) is provided with a nut (5), the interior of the nut (5) is provided with a thread groove and is threadedly connected to the outer side of the external thread (3), the outer side of the screw rod (1) is provided with a first connecting piece (10), the outer side of the screw rod (1) is provided with a second connecting piece (13), the interiors of the first connecting piece (10) and the second connecting piece (13) are both provided with internal threads (9), the internal threads (9) are threadedly connected to the external thread (3), and one side of the first connecting piece (10) and the second connecting piece (13) is provided with a sealing assembly.

2. A fastener with good sealing performance according to claim 1, characterized in that: The sealing assembly comprises a first sealing cap (2), the first sealing cap (2) being fixedly connected to one side of a first connecting member (10), and a first sealing groove (11) being provided inside the first sealing cap (2).

3. A fastener with good sealing performance according to claim 2, characterized in that: The sealing assembly further comprises a second sealing ring (8), wherein the second sealing ring (8) is arranged inside the first sealing groove (11).

4. A fastener with good sealing performance according to claim 1, characterized in that: A second sealing cap (4) is fixedly connected to one side of the second connecting member (13), and a second sealing groove (12) is formed on one side of the second sealing cap (4).

5. A fastener with good sealing performance according to claim 4, characterized in that: A first sealing ring (7) is arranged inside the second sealing groove (12).

6. A fastener with good sealing performance according to claim 1, characterized in that: A hydrophobic cap (6) is fixedly connected to the top of the screw (1).

7. A fastener with good sealing performance according to claim 2, characterized in that: The shape of the first sealing cap (2) is set to be conical.

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