Aviation fastening and sealing assembly

Abstract

The utility model relates to an aviation fastening sealing assembly. The aviation fastening sealing assembly comprises a sealing cap; the sealing cap is installed on the connecting piece through a positioning piece, and a rubber plane gasket is arranged between the positioning piece and the sealing cap. Or, the sealing cap covers the connecting piece in a buckled mode, and a rubber slotted gasket with a groove in the single face is arranged at the bottom of the sealing cap. When a single sealing cap is used, irregular skirt edges generated after polysulfide glue overflows and is cured can be avoided; and when the positioning piece is matched with the sealing cap for use, the polysulfide glue is prevented from overflowing, so that the application condition of an existing spaceflight fastening and sealing assembly is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fastening and sealing assemblies, and in particular to an aviation fastening and sealing assembly. Background Art

[0002] At present, in addition to the use of prefabricated polysulfide rubber sealing caps, there are three main aerospace bolt sealing solutions:

[0003] Direct extrusion and application of polysulfide glue, use of a single sealing cap, and a combination of a positioner and a sealing cap.

[0004] Among them, the thickness of the polysulfide glue after direct extrusion and application of the polysulfide glue for sealing is uneven, and the surface has a brushed effect, which is not beautiful in appearance.

[0005] Using a single sealing cap can solve the uneven thickness caused by direct extrusion of polysulfide adhesive, resulting in a smoother surface after molding. However, the extrusion process leaves a residual adhesive column at the top of the polysulfide adhesive, which needs to be trimmed off later, and an irregular skirt is left on the surface of the material.

[0006] In the combination of a locator and a sealing cap, the locator externally positions the bolt, and the polysulfide adhesive-filled sealing cap is pressed into place. Because the internal positioning device is incorporated into the sealing cap, the adhesive surface is smoother and free of excess adhesive. However, this still doesn't completely eliminate the problem of an irregular bottom skirt. Furthermore, with existing positioning solutions, the adhesive on the bottom of the locator adheres to the material surface, making it difficult to remove later. Utility Model Content

[0007] The purpose of this application is to provide an aviation fastening and sealing assembly that can prevent the irregular skirt that appears after the polysulfide glue overflows and solidifies when a single sealing cap is used; and prevent the polysulfide glue from overflowing when a positioning piece and a sealing cap are used in conjunction, thereby improving the application status of existing aerospace fastening and sealing assemblies.

[0008] In order to achieve the above-mentioned object, the utility model provides an aviation fastening and sealing assembly, comprising a sealing cap;

[0009] The sealing cap is mounted on the connector via a positioning piece, and a rubber flat gasket is provided between the positioning piece and the sealing cap;

[0010] Alternatively, the sealing cap is buckled onto the connecting piece, and a rubber slotted gasket with a groove on one side is provided at the bottom of the sealing cap.

[0011] In an optional embodiment, the rubber flat gasket or the rubber slotted gasket is a circular ring structure made of silicone material, and both include a sealing fitting surface for fitting with the plane of the connector.

[0012] In an optional embodiment, the rubber flat gasket includes flat rubber surfaces on both sides, and any one of the flat rubber surfaces constitutes a sealing fitting surface of the rubber flat gasket. The thickness of the rubber flat gasket is 0.3-0.5 mm.

[0013] In an optional embodiment, one side of the rubber slotted gasket includes a flat rubber surface, which constitutes a sealing fitting surface of the rubber slotted gasket, and the other side of the rubber slotted gasket is provided with a notch groove.

[0014] In an optional embodiment, the thickness of the rubber slotted gasket is greater than 1 mm.

[0015] In an optional embodiment, the notched grooves are evenly distributed in the circumferential direction of the rubber slotted gasket and are arranged in a divergent manner in the radial direction of the rubber slotted gasket.

[0016] In an optional embodiment, the notch groove includes an arc-shaped groove, a square-shaped groove or a polygonal groove that passes through the wall thickness direction of the rubber slotted gasket.

[0017] In an optional embodiment, the rubber flat gasket or the rubber slotted gasket is bonded to the flat surface of the connecting member.

[0018] In an optional embodiment, the rubber flat gasket or the rubber slotted gasket is embedded and installed on the outer side of the sealing cap.

[0019] In an optional embodiment, a hole is formed on the edge of the sealing cap, and a mounting rib is provided around the hole, and the mounting rib is connected to the outer edge of the sealing cap.

[0020] By arranging a rubber flat gasket between the sealing cap and the positioning piece, it is possible to assist the positioning piece in positioning while preventing polysulfide rubber from overflowing and causing irregular skirts.

[0021] At the same time, when the sealing cap is used alone, a rubber slotted gasket with a single-sided groove is set at its bottom. During the pressing process of the sealing cap, the polysulfide glue can flow out evenly along the reserved gap of the rubber slotted gasket, forming a uniform skirt after curing for later cutting.

[0022] The aviation fastening and sealing component of the utility model can improve the application condition of the fastening and sealing component as a whole and ensure the sealing effect.

[0023] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 Schematic diagram of the matching relationship between the sealing cap and the rubber gasket in this application;

[0026] Figure 2 Schematic diagram of the coordination relationship among the positioning member, sealing cap and rubber pad in this application;

[0027] Figure 3 Schematic diagram of the structure of the rubber flat gasket in Example 1;

[0028] Figure 4 This is a schematic structural diagram of the rubber slotted gasket in the arc-shaped groove form in Example 2;

[0029] Figure 5 for Figure 4 A side structural diagram of

[0030] Figure 6 This is a schematic structural diagram of the square-grooved rubber gasket in Example 2;

[0031] Figure 7 for Figure 6 A side structural diagram of

[0032] Figure 8 This is a schematic structural diagram of a rubber slotted gasket in the form of a polygonal groove in Example 2;

[0033] Figure 9 for Figure 8 A side structural diagram of

[0034] Figure 10 This is a structural diagram of the rubber gasket installation location on the sealing cap.

[0035] icon:

[0036] 1-Rubber pad; 10-Rubber flat gasket; 11-Flat rubber surface; 20-Rubber slotted washer; 21-Notched groove;

[0037] 2-sealing cap; 2a-hole; 2b-mounting rib;

[0038] 3- positioning piece;

[0039] 4-Connectors. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0042] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0043] The aviation fastening sealing assembly in this application is mainly aimed at different application scenarios of the sealing cap. By setting necessary structures, it prevents the overflow of polysulfide glue or guides the relatively regular outflow of polysulfide glue, avoids the appearance of irregular skirts, and improves the application conditions of the aviation fastening sealing assembly.

[0044] See also Figure 1-Figure 2 The aviation fastening sealing assembly in the utility model has a main structure including a sealing cap 2. For the use of the sealing cap 2 alone or in combination with the positioning piece 3, the necessary rubber pad 1 is provided to make the polysulfide glue flow out evenly along the vacant space, thereby forming a regular and easy-to-remove skirt, or the rubber pad 1 fills the gap between the positioning piece 3 and the sealing cap 2 to prevent the polysulfide glue from overflowing.

[0045] When the sealing cap 2 is used in conjunction with the positioning piece 3, the sealing cap 2 is installed on the connecting piece 4 through the positioning piece 3, and a rubber flat gasket 10 is attached to the bottom between the positioning piece 3 and the sealing cap 2 to prevent the polysulfide glue from overflowing during the pressing process of the sealing cap 2.

[0046] Alternatively, when the sealing cap 2 is used alone, the sealing cap 2 is buckled onto the connector 4, and a rubber slotted gasket 20 with a single-sided groove is provided at the bottom of the sealing cap 2, so that the polysulfide glue flows out evenly along the slotted portion during the pressing process of the sealing cap 2, and forms a uniform skirt after curing for later cutting.

[0047] In the present invention, considering that polysulfide rubber may adhere to ordinary natural rubber, silicone is used as the material of the rubber pad 1. The rubber flat gasket 10 or the rubber slotted gasket 20 are both circular ring structures made of silicone material, and both include a sealing fitting surface for fitting with the plane of the connector 4, thereby completely sealing and preventing the polysulfide rubber from overflowing, or sealing the bottom surface to guide the polysulfide rubber to regulate overflow.

[0048] Furthermore, the type of silicone depends on the choice of sealing solution. The present invention provides two types of silicone to choose from, one is high-temperature vulcanized silicone rubber, and the other is room-temperature vulcanized silicone rubber. The specific adjustment is based on the actual application scenario and needs.

[0049] The following describes the structural form of the aviation fastening and sealing assembly in the form of different embodiments for different application scenarios.

[0050] Example 1

[0051] Combine Figure 3 In this embodiment, the structure of the rubber pad 1 during the use of the sealing cap 2 and the positioning member 3 is described.

[0052] In this application scenario, the rubber pad 1 is specifically in the form of a rubber flat gasket 10. Specifically, the rubber flat gasket 10 includes flat rubber surfaces 11 on both sides. The flat rubber surface 11 on any side can constitute the sealing fitting surface of the rubber flat gasket 10.

[0053] By installing the rubber flat gasket 10 between the positioning piece 3 and the bottom of the sealing cap 2, it can first play a good auxiliary positioning role. At the same time, the rubber flat gasket 10 can occupy the gap between the positioning piece 3 and the sealing cap 2. Combined with the sealing fit of the flat rubber surface 11 on the rubber flat gasket 10 to the connecting piece 4, it prevents the polysulfide rubber from overflowing and causing an irregular skirt when the positioning piece 3 squeezes the sealing cap 2.

[0054] Furthermore, by attaching the flat rubber surface 11 to the surface of the connector 4 , greater friction and better sealing can be provided, so that the rubber flat gasket 10 plays a good auxiliary positioning and sealing role.

[0055] Based on the squeezing of the sealing cap 2 by the positioning member 3 and the fact that no grooves are provided, the thickness of the rubber flat gasket 10 is 0.3-0.5 mm, which can meet the sealing requirements.

[0056] The rubber flat gasket 10 in this embodiment can effectively seal the annular gap between the positioning member 3 and the sealing cap 2 to prevent the polysulfide rubber from overflowing when the positioning member 3 presses the sealing cap 2 .

[0057] During the specific operation process, by attaching a flat rubber gasket 10 to the bottom, not only the friction between the locator and the surface of the rubber gasket 10 is increased, but also the locator and the surface of the rubber gasket 10 are in close contact, fundamentally preventing the possibility of polysulfide glue overflowing from the edge of the locator.

[0058] Example 2

[0059] This embodiment is described by taking the structure of the rubber pad 1 during independent use of the sealing cap 2 .

[0060] In this application scenario, the rubber pad 1 is specifically in the form of a rubber slotted gasket 20, which is mainly used to guide the sealing cap 2 to allow the polysulfide rubber to overflow regularly during extrusion to form an easily removable regulatory skirt.

[0061] Specifically, one side of the rubber slotted gasket 20 includes a flat rubber surface 11, which constitutes the sealing fitting surface of the rubber slotted gasket 20 and can be sealed and fitted to the connector 4. By providing a notch groove 21 on the other side of the rubber slotted gasket 20 and installing the side with the notch groove 21 facing upward, when the sealing ring is squeezed, the polysulfide rubber can be evenly overflowed from the notch groove 21 to form a relatively regular and easy-to-remove skirt.

[0062] Based on the separate use of the sealing cap 2, and since the rubber slotted gasket 20 needs to be slotted, the thickness of the rubber slotted gasket 20 needs to be greater than 1 mm to minimize the deformation of the rubber slotted gasket 20 during the extrusion process, prevent the notch groove 21 from being squeezed and deformed, and thus ensure the stability of the polysulfide rubber overflow channel.

[0063] In this embodiment, to promote uniform overflow of the polysulfide adhesive, the notches 21 are evenly spaced around the circumference of the rubber slotted gasket 20 and arranged in a divergent pattern in the radial direction of the rubber slotted gasket 20. By evenly distributing the holes formed by the notches 21 around the circumference of the rubber slotted gasket 20, the sealing cap 2 can promote uniform overflow of the polysulfide adhesive from the circumference when squeezed. Combined with the divergent arrangement of the multiple notches 21 in the radial direction of the rubber slotted gasket 20, a regular skirt edge is formed after curing. The resulting skirt edge has a regularity and flatness far superior to that achieved by existing technologies, making it easier to remove later.

[0064] Based on the role played by the notch groove 21, it is necessary to set the notch groove 21 as a transparent structure that penetrates the wall thickness direction of the rubber slotted gasket 20. At the same time, the specific shape of the notch groove 21 is not limited in this embodiment. The cross-sectional shape of the notch groove 21 in the wall thickness direction can be an arc groove, a square groove or a polygonal groove. Different structural forms can be specifically referred to. Figure 4-Figure 9 Schematic diagram of the structure.

[0065] The above two different embodiments are described from different application scenarios and connection requirements. Regarding the installation angle of the rubber pad 1, the present invention includes two installation forms: gluing and embedded installation.

[0066] Specifically, in the adhesive form, the sealing surface of the rubber pad 1 is used as the adhesive backing surface, and the rubber flat gasket 10 or the rubber slotted gasket 20 is adhered to the plane of the connector 4 in an attached manner. This method is simple to operate, and can be used to cut, shape and adhere existing mature adhesive silicone sheets.

[0067] In the embedded installation form, the rubber flat gasket 10 or the rubber slotted gasket 20 is embedded and installed on the outside of the sealing cap 2, so a hole needs to be reserved on the edge of the sealing cap 2, and a mounting structure is added on the outer edge of the sealing cap 2 to fix the rubber gasket 1.

[0068] See also Figure 10 Specifically, a hole 2a is provided on the edge of the sealing cap 2, and a mounting rib 2b is provided around the hole 2a. The mounting rib 2b is connected to the outer edge of the sealing cap 2, so that the rubber pad 1 can be effectively and reliably installed on the bottom periphery of the sealing cap 2, ensuring that the rubber pad 1 is installed stably and reliably.

[0069] The aviation fastening and sealing component of the present invention can improve the application conditions of the fastening and sealing component to the greatest extent, and alleviate the operational troubles caused by polysulfide adhesive while consolidating the sealing performance.

[0070] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0071] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An aviation fastening and sealing assembly, characterized in that: Including sealing cap; The sealing cap is mounted on the connector via a positioning piece, and a rubber flat gasket is provided between the positioning piece and the sealing cap; Alternatively, the sealing cap is buckled onto the connecting piece, and a rubber slotted gasket with a groove on one side is provided at the bottom of the sealing cap.

2. The aviation fastening and sealing assembly according to claim 1, characterized in that: The rubber flat gasket or the rubber slotted gasket are both annular structures made of silicone material, and both include a sealing fitting surface for fitting with the plane of the connector.

3. The aviation fastening and sealing assembly according to claim 2, characterized in that: The rubber flat gasket includes flat rubber surfaces on both sides, and any of the flat rubber surfaces constitutes a sealing surface of the rubber flat gasket. The thickness of the rubber flat gasket is 0.3-0.5 mm.

4. The aviation fastening and sealing assembly according to claim 2, characterized in that: One side of the rubber slotted gasket includes a flat rubber surface, which constitutes a sealing fitting surface of the rubber slotted gasket, and the other side of the rubber slotted gasket is provided with a notch groove.

5. The aviation fastening and sealing assembly according to claim 4, characterized in that: The thickness of the rubber slotted gasket is greater than 1 mm.

6. The aviation fastening and sealing assembly according to claim 4, characterized in that: The notch grooves are evenly distributed in the circumferential direction of the rubber slotted gasket and are arranged in a divergent shape in the radial direction of the rubber slotted gasket.

7. The aviation fastening and sealing assembly according to claim 4, characterized in that: The notch groove includes an arc-shaped groove, a square-shaped groove or a polygonal groove that passes through the wall thickness direction of the rubber slotted gasket.

8. The aviation fastening and sealing assembly according to claim 4, characterized in that: The rubber flat gasket or the rubber slotted gasket is bonded to the flat surface of the connecting piece.

9. The aviation fastening and sealing assembly according to claim 4, characterized in that: The rubber flat gasket or the rubber slotted gasket is embedded and installed on the outer side of the sealing cap.

10. The aviation fastening and sealing assembly according to claim 4, characterized in that: A hole is formed on the edge of the sealing cap, and a mounting rib is provided on the periphery of the hole. The mounting rib is connected to the outer edge of the sealing cap.

Images