Titanium alloy aviation fastener

Abstract

The utility model relates to the technical field of fasteners, in particular to a titanium alloy aviation fastener which comprises a smooth round handle, a screw rod is fixed at one end of the smooth round handle, an elastic ring is arranged at one end, close to the screw rod, of the smooth round handle, and after the smooth round handle and the screw rod penetrate through a hole in the surface of a workpiece, the elastic ring is clamped between the smooth round handle and the hole. A metal backing ring is arranged on a rod body of the smooth round handle in a sleeved mode, an elastic supporting piece is arranged between the metal backing ring and an end plate body of the smooth round handle, and after the smooth round handle is locked on a workpiece, the elastic supporting piece is pressed to deform. The screw has the advantages that the elastic ring is arranged at one end, close to the screw, of the smooth round handle, and the elastic ring is stably arranged on the smooth round handle in a sleeving mode through the embedding groove. After the screw rod penetrates through the hole in the surface of the workpiece, the elastic ring is clamped between the smooth round handle and the hole, and the outer ring diameter of the rubber ring is larger than the diameter of the round surface of the end, close to the screw rod, of the smooth round handle, so that the screw rod can be effectively prevented from falling off randomly in the hole, and the mounting convenience and efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and specifically relates to a titanium alloy aviation fastener. Background Art

[0002] In the field of aerospace, fasteners are key components for connecting various parts, and their performance and quality directly relate to the safety and reliability of the entire aircraft. With the continuous development of aerospace technology, the requirements for fasteners are getting higher and higher. Not only do they need to have basic properties such as high strength and corrosion resistance, but they also need to have good functions such as anti-loosening and sealing.

[0003] Currently, there are some problems with traditional aviation fasteners during installation and use. For example, when installing the fastener into a hole or threaded hole in a workpiece, the screw rod is prone to randomly fall off in the hole, causing inconvenience to the installation process and reducing the installation efficiency. In addition, after the fastener is locked, due to factors such as vibration and temperature change, the screwed joint structure is prone to loosen, affecting the tightness and stability of the connection, and thus may pose a safety hazard.

[0004] At the same time, there are also deficiencies in the elastic support of existing fasteners. Lack of an effective elastic pad structure, it is difficult to provide continuous and stable elastic support after the screwed joint structure is locked, unable to effectively prevent the loosening of the screwed joint structure, and difficult to meet the high reliability requirements of fasteners in the aerospace field. Content of the Utility Model

[0005] The purpose of the utility model is to provide a titanium alloy aviation fastener to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A titanium alloy aviation fastener includes a round shank, one end of the round shank is fixed with a screw rod, an elastic ring is provided at one end of the round shank close to the screw rod. After the round shank and the screw rod penetrate through the hole on the surface of the workpiece, the elastic ring is clamped between the round shank and the hole; a metal pad ring is sleeved on the rod body of the round shank, and an elastic support is provided between the metal pad ring and the end plate of the round shank. After the round shank is locked on the workpiece, the elastic support is deformed under pressure.

[0007] Preferably, the round shank is a "convex" - shaped cylinder, a hexagonal groove is opened at one end of the round shank, and a plurality of anti - slip grooves are opened at the edge of one end of the round shank.

[0008] Preferably, an installation groove is opened at one end of the round shank close to the screw rod. The installation groove is an annular groove, and the elastic ring is sleeved in the installation groove.

[0009] Preferably, the elastic ring includes a rubber ring, which is a circular ring with a semi-circular cross-section. The inner diameter of the rubber ring is equal to the inner diameter of the insert groove, and the outer diameter of the rubber ring is greater than the diameter of the circular surface of the end of the smooth shank near the screw.

[0010] Preferably, the elastic support includes a metal washer ring and an elastic washer. The metal washer ring is a circular ring plate, and the elastic washer is a circular arc strip with a "Z" shaped cross section. One end of the elastic washer is fixed to the surface of the metal washer ring, and the other end of the elastic washer is fixed to the surface of the smooth round handle. Multiple elastic washers are provided, and the multiple elastic washers are distributed around the smooth round handle as the central axis.

[0011] Preferably, the surface of the smooth circular handle is provided with a reserved groove, the reserved groove is an annular groove, a rubber support ring is fixed inside the reserved groove, the height of the rubber support ring is greater than the depth of the reserved groove, and one end of the rubber support ring is fixed to the surface of the metal washer ring.

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

[0013] The titanium alloy aerospace fastener proposed in this utility model has an elastic ring at the end of the smooth round shank near the screw. The elastic ring is securely fitted onto the smooth round shank through an insert groove. When the screw passes through the hole on the workpiece surface, the elastic ring is clamped between the smooth round shank and the hole. Since the outer ring diameter of the rubber ring is larger than the diameter of the round surface of the end of the smooth round shank near the screw, it can effectively prevent the screw from falling out of the hole, greatly improving the convenience and efficiency of installation.

[0014] A metal washer is fitted onto the shaft of the smooth round shank. An elastic support, comprising a metal washer, an elastic washer, and a rubber support ring, is located between the metal washer and the end plate of the smooth round shank. When the smooth round shank and the screw are installed on the workpiece, and the screw is screwed into the threaded hole or tightened by a nut, the metal washer, elastic washer, and rubber support ring are all compressed. The rubber support ring deforms under pressure and retracts into a pre-drilled groove, while the metal washer is compressed and deformed. Subsequently, the metal washer and rubber support ring spring back and support each other between the smooth round shank and the metal washer, acting as elastic pads. This ensures a tight connection between the screw and the screwed structure, effectively preventing loosening of the screwed structure due to vibration, temperature changes, or other factors, thus improving the stability and reliability of the connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 for Figure 2 Sectional view of the structure at point AA;

[0018] Figure 4 for Figure 3 Schematic enlarged view of the structure at position A in [the figure];

[0019] Figure 5 is Figure 3 Schematic enlarged view of the structure at position B in [the figure];

[0020] Figure 6 Schematic diagram of the connection structure of the metal gasket ring and the elastic gasket of the present utility model.

[0021] In the figure: smooth round handle 1, screw rod 2, embedding groove 3, rubber ring 4, reserved groove 5, rubber support ring 6, metal gasket ring 7, elastic gasket 8. Specific embodiments

[0022] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] Please refer to Figures 1 to 6 , the present utility model provides a technical solution: a titanium alloy aviation fastener, including a smooth round handle 1, the smooth round handle 1 is a "convex" - shaped cylinder, one end of the smooth round handle 1 is provided with a hexagonal groove, and multiple anti - slip grooves are provided at the edge of one end of the smooth round handle 1. One end of the smooth round handle 1 is fixed with a screw rod 2. An elastic ring is provided at one end of the smooth round handle 1 close to the screw rod 2. After the smooth round handle 1 and the screw rod 2 penetrate the hole on the surface of the workpiece, the elastic ring is clamped between the smooth round handle 1 and the hole; an embedding groove 3 is provided at one end of the smooth round handle 1 close to the screw rod 2, the embedding groove 3 is an annular groove, and the elastic ring is sleeved in the embedding groove 3; the elastic ring includes a rubber ring 4, the rubber ring 4 is a circular ring with a semicircular cross - section, the inner ring diameter of the rubber ring 4 is equal to the inner ring diameter of the embedding groove 3, and the outer ring diameter of the rubber ring 4 is greater than the diameter of the round surface at one end of the smooth round handle 1 close to the screw rod 2. When installing the fastener, the screw rod 2 is introduced into the hole or threaded hole on the surface of the workpiece. When the screw rod 2 passes through the hole, the embedding groove 3 tightly clamps between the smooth round handle 1 and the hole, preventing the screw rod 2 from falling off randomly in the hole. According to the situation, a screwed nut is sleeved at the bottom end of the screw rod 2. When the surface of the workpiece is a threaded hole, the nut does not need to be installed.

[0024] A metal washer 7 is fitted onto the rod body of the smooth round handle 1. An elastic support is provided between the metal washer 7 and the end plate of the smooth round handle 1. After the smooth round handle 1 is locked to the workpiece, the elastic support is deformed under pressure. The elastic support includes the metal washer 7 and the elastic washer 8. The metal washer 7 is a circular ring plate, and the elastic washer 8 is a circular arc strip with a "Z" shaped cross section. One end of the elastic washer 8 is fixed to the surface of the metal washer 7, and the other end of the elastic washer 8 is fixed to the surface of the smooth round handle 1. There are multiple elastic washer 8, and the multiple elastic washer 8 are distributed around the smooth round handle 1 as the central axis. A reserved groove 5 is opened on the surface of the smooth round handle 1. The reserved groove 5 is an annular groove. A rubber support ring 6 is fixed inside the reserved groove 5. The height of the rubber support ring 6 is greater than the depth of the reserved groove 5. One end of the rubber support ring 6 is fixed to the surface of the metal washer 7. When the smooth round shank 1 and the screw 2 are installed on the workpiece, and the screw 2 is screwed into the screw hole and locked, or screwed into the nut and locked, the metal washer 7, the elastic washer 8 and the rubber support ring 6 are all squeezed. The rubber support ring 6 is deformed under pressure and retracts into the reserved groove 5. The metal washer 7 is squeezed and deformed. The metal washer 7 and the rubber support ring 6 rebound and support each other between the smooth round shank 1 and the metal washer 7, which acts as an elastic pad, so that the screw 2 and the screw connection structure are tightly screwed together.

[0025] The method of using this titanium alloy aerospace fastener is as follows: Place the rubber ring 4 into the mounting groove 3 at the end of the smooth round shank 1 near the screw 2. Since the rubber ring 4 is a semi-circular ring with an inner diameter equal to the inner diameter of the mounting groove 3, and its outer diameter larger than the diameter of the round surface at the end of the smooth round shank 1 near the screw 2, the rubber ring 4 can be securely mounted in the mounting groove 3. Insert the screw 2 into the hole or threaded hole on the workpiece surface. During insertion, ensure the smooth round shank 1 is oriented correctly, with the end having the hexagonal groove and anti-slip groove facing outwards for easier subsequent operations. After the screw 2 passes through the hole, the elastic ring at the end of the smooth round shank 1 near the screw 2, clamped between the smooth round shank 1 and the hole, prevents the screw 2 from falling out of the hole. At this point, according to actual needs, a threaded nut is fitted onto the bottom end of the screw 2, and a suitable tool (such as a wrench) is used to apply torque through the hexagonal groove at one end of the smooth round shank 1, while simultaneously tightening the nut to lock the fastener onto the workpiece. Alternatively, torque can be applied directly through the hexagonal groove at one end of the smooth round shank 1 to screw the screw 2 into the threaded hole, thus locking the fastener onto the workpiece without the need for a nut. After the smooth round shank 1 and screw 2 are installed on the workpiece, whether the screw 2 is screwed into the threaded hole or tightened by the nut, the metal washer 7, elastic washer 8, and rubber support ring 6 will all be compressed. The rubber support ring 6 deforms under pressure and retracts into the reserved groove 5. Since the reserved groove 5 is an annular groove, and the height of the rubber support ring 6 is greater than the depth of the reserved groove 5, one end of the rubber support ring 6 is fixed to the surface of the metal washer 7, so during the compression process, the rubber support ring 6 will gradually compress. The metal washer 7 is compressed and deformed. The metal washer 7 is a circular plate that deforms to some extent when compressed. The metal washer 7 and the rubber support ring 6 spring back and support each other between the smooth round handle 1 and the metal washer 7, acting as elastic pads. The elastic washer 8 is a Z-shaped arc strip, with one end fixed to the surface of the metal washer 7 and the other end fixed to the surface of the smooth round handle 1. Multiple elastic washers 8 are distributed around the smooth round handle 1 as a central axis, further enhancing the elastic support effect and ensuring a tight connection between the screw 2 and the screwed structure, preventing loosening.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A titanium alloy aerospace fastener, comprising a smooth round shank (1), one end of which is fixed with a screw (2), characterized in that: The smooth round shank (1) is provided with an elastic ring at one end near the screw (2). After the smooth round shank (1) and the screw (2) pass through the hole on the surface of the workpiece, the elastic ring is clamped between the smooth round shank (1) and the hole. A metal washer (7) is sleeved on the rod body of the smooth round shank (1). An elastic support is provided between the metal washer (7) and the end plate of the smooth round shank (1). After the smooth round shank (1) is locked in the workpiece, the elastic support is deformed under pressure.

2. The titanium alloy aerospace fastener according to claim 1, characterized in that: The smooth round handle (1) is a "convex" shaped cylinder. One end of the smooth round handle (1) has a hexagonal groove, and the edge of one end of the smooth round handle (1) has multiple anti-slip grooves.

3. The titanium alloy aerospace fastener according to claim 1, characterized in that: The smooth round shank (1) has an insert groove (3) at one end near the screw (2). The insert groove (3) is an annular groove, and the elastic ring is fitted in the insert groove (3).

4. A titanium alloy aerospace fastener according to claim 3, characterized in that: The elastic ring includes a rubber ring (4), which is a semi-circular ring with an inner diameter equal to the inner diameter of the insert groove (3). The outer diameter of the rubber ring (4) is greater than the diameter of the circular surface of the end of the smooth shank (1) near the screw (2).

5. A titanium alloy aerospace fastener according to claim 1, characterized in that: The elastic support includes a metal washer ring (7) and an elastic washer (8). The metal washer ring (7) is a circular ring plate, and the elastic washer (8) is a circular arc strip with a "Z" shaped cross section. One end of the elastic washer (8) is fixed to the surface of the metal washer ring (7), and the other end of the elastic washer (8) is fixed to the surface of the smooth round handle (1). There are multiple elastic washer (8), and the multiple elastic washer (8) are distributed around the smooth round handle (1) as the central axis.

6. A titanium alloy aerospace fastener according to claim 5, characterized in that: The surface of the smooth round handle (1) is provided with a reserved groove (5), which is an annular groove. A rubber support ring (6) is fixed inside the reserved groove (5). The height of the rubber support ring (6) is greater than the depth of the reserved groove (5). One end of the rubber support ring (6) is fixed to the surface of the metal washer ring (7).

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