Antenna connection structure on fairing

Abstract

The utility model belongs to the technical field of aviation connection structures, and discloses an antenna connection structure on a fairing, which comprises an airtight box, the bottom of the airtight box is mounted on a fuselage skin, a through hole matched with the airtight box in structure is arranged at the position of the fairing skin corresponding to the airtight box, and the upper end of the airtight box extends out of the fairing skin through the through hole. The top of the airtight box is provided with an interface for installing an antenna. The airtight box extends out of the fairing, the bottom of the airtight box is connected with the fuselage reinforcer, and force transmission is direct; the end part of the airtight box is not directly connected with the fairing skin, but is rotationally connected through the L-shaped check ring and the rubber part, so that the requirement on the positioning precision of the fairing is low, and the manufacturability is good; the rubber pad is additionally arranged at the opening gap of the airtight box of the fairing, so that rainwater is prevented from flowing from the gap between the airtight box and the fairing skin, and the waterproof effect at the joint is not reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation connection structures, and relates to a structure for installing an antenna on an aircraft fairing, in particular to an antenna connection structure on the fairing. Background Art

[0002] Some types of aircraft need to be equipped with multiple antennas outside the fuselage. When the antennas are inevitably arranged on the fuselage fairing structure due to overall requirements, it is necessary to locally strengthen the fairing structure and design the connection structure to meet the antenna installation requirements.

[0003] The existing antenna connection structure on the fairing is composed of the fuselage skin, airtight box, antenna mounting pad, and fairing skin. One side of the airtight box is connected to the fuselage skin, and the other side is directly connected to the fairing skin. The structure is strengthened by the antenna mounting pad, and the antenna is directly installed on the other side of the fairing skin. Due to the poor rigidity of the fairing skin, this structural form leads to poor installation processability, poor installation accuracy, and poor force transmission effect. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an antenna connection structure on a fairing, which ensures the processability and precision requirements of antenna installation.

[0005] The technical solution of the utility model is as follows:

[0006] An antenna connection structure on a fairing includes an airtight box, the bottom of which is mounted on a fuselage skin, a through hole matching the airtight box structure is provided at a position of the fairing skin corresponding to the airtight box, the upper end of the airtight box extends out of the fairing skin through the through hole, and an interface for mounting an antenna is provided on the top of the airtight box.

[0007] Furthermore, it also includes an L-shaped retaining ring, which is a ring-shaped structure with an L-shaped cross-section and is matched with the edge of the through hole of the fairing skin and the airtight box structure as a whole.

[0008] Furthermore, the L-shaped retaining ring is a structure composed of at least two petal structures.

[0009] Furthermore, a sealing gasket is provided between the L-shaped retaining ring and the airtight box.

[0010] Furthermore, below the fuselage skin corresponding to the airtight box is the reinforced structure of the aircraft fuselage, specifically the "well"-shaped reinforced structure of the fuselage.

[0011] Furthermore, the side wall of the airtight box is an inclined surface which is larger at the bottom and smaller at the top.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model designs a new type of extended airtight box, which extends out of the fairing shape, and the bottom of the airtight box is connected to the fuselage reinforcement, and the force transmission is direct;

[0014] 2. The end of the airtight box is not directly connected to the fairing skin, but is transferred through an L-ring and a rubber part, which has low requirements on the positioning accuracy of the fairing and good processability;

[0015] 3. Add rubber pads at the opening gap between the fairing and the airtight box to prevent rainwater from entering the gap between the airtight box and the fairing skin without reducing the waterproof effect of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the antenna connection structure installed on the fairing;

[0017] Figure 2 It is a schematic diagram of the connection between the L-shaped retaining ring and the rubber pad and the airtight box and the fairing skin;

[0018] Figure 3 It is a schematic diagram of the fairing skin with openings;

[0019] Figure 4 This is a schematic diagram of an airtight box;

[0020] Figure 5 It is a schematic diagram of an L-shaped retaining ring;

[0021] Figure 6 This is a schematic diagram of the fuselage's "well"-shaped reinforcement structure;

[0022] Among them: 1. Fuselage skin, 2. Fairing skin, 3. Airtight box, 4. L-shaped retaining ring, 5. Fuselage "well" shaped reinforcement structure, 6. Rubber pad. DETAILED DESCRIPTION

[0023] This section is an embodiment of the utility model, which is used to explain and illustrate the technical solution of the utility model. In the absence of conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the orientations or positional relationships of the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or case 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or a point connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0026] Embodiment 1:

[0027] An antenna connection structure on a fairing includes an airtight box 3, the bottom of which is mounted on a fuselage skin 1, a through hole matching the structure of the airtight box 3 is provided at a position of the fairing skin 2 corresponding to the airtight box 3, the upper end of the airtight box 3 extends out of the fairing skin 2 through the through hole, and an interface for mounting an antenna is provided on the top of the airtight box 3.

[0028] It also includes an L-shaped retaining ring 4, which is a ring-shaped structure with an L-shaped cross section and is matched with the edge of the through hole of the fairing skin 2 and the structure of the airtight box 3 as a whole.

[0029] The L-shaped retaining ring 4 is a structure composed of at least two petal structures.

[0030] A sealing gasket 6 is provided between the L-shaped retaining ring 4 and the airtight box 3 .

[0031] Below the fuselage skin 1 corresponding to the airtight box 3 is the reinforced structure part of the aircraft fuselage, specifically the fuselage "well" shaped reinforcement structure 5.

[0032] The side wall of the airtight box 3 is a slope that is larger at the bottom and smaller at the top.

[0033] Embodiment 2:

[0034] The airtight box 3 is an integrally machined box-shaped part of aluminum alloy. The flange at the bottom of the airtight box 3 is connected to the fuselage skin 1 and the fuselage "well"-shaped reinforcement structure 5. The top of the airtight box 3 passes through the notch of the finishing cover 2 and extends out of the fairing to provide an antenna installation platform. The positioning of the airtight box 3 is based on the positioning reference of the fuselage, while the fairing 2 is positioned based on its own positioning system. The airtight box 3 is not directly connected to the fairing 2 structure, and the two sets of coordinate systems are decoupled, which reduces the process difficulty.

[0035] The fuselage "well"-shaped reinforcement structure 5 is connected to the fuselage skin 1, forming the main load-bearing structure of the airtight box 3, transmitting the loads in all directions transmitted by the airtight box, and having a good force transmission effect;

[0036] When the airtight box 3 is connected to the fairing skin 2, it is connected through the L-shaped retaining ring 4 and the rubber pad 6. The rubber pad 6 is attached to the outside of the airtight box 3, the bottom of the L-shaped retaining ring 4 is attached to the fairing skin 2, and the side of the L-shaped retaining ring 4 is attached to the rubber pad 6.

[0037] The utility model discloses an antenna connection structure on a fairing, which is designed with an outward-extending airtight box structure. One end of the airtight box is connected to a fuselage skin, and the other end is connected to the fairing skin through an L-shaped retaining ring and a rubber pad, and has good installation processability.

[0038] When the airtight box is connected to the fuselage, a "well" shaped reinforcement structure is adopted to meet the force transmission requirements of the airtight box.

[0039] The utility model overcomes the shortcomings of the original structure that the positioning accuracy of the fairing is high, the processability is poor, and the force transmission effect is not good.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the utility model, and these modifications or substitutions should be included in the protection scope of the utility model.

Claims

1. An antenna connection structure on a fairing, characterized in that: The invention comprises an airtight box (3), the bottom of which is mounted on a fuselage skin (1), a through hole matching the structure of the airtight box (3) is provided at a position of the fairing skin (2) corresponding to the airtight box (3), the upper end of the airtight box (3) extends out of the fairing skin (2) through the through hole, and an interface for mounting an antenna is provided at the top of the airtight box (3).

2. The antenna connection structure on a fairing according to claim 1, characterized in that: It also includes an L-shaped retaining ring (4), which is a ring-shaped structure with an L-shaped cross section and is integrally matched with the through hole edge of the fairing skin (2) and the airtight box (3) structure.

3. The antenna connection structure on a fairing according to claim 2, characterized in that: The L-shaped retaining ring (4) is a structure composed of at least two petal structures.

4. The antenna connection structure on a fairing according to claim 2, characterized in that: A sealing gasket (6) is provided between the L-shaped retaining ring (4) and the airtight box (3).

5. The antenna connection structure on a fairing according to claim 1, characterized in that: Below the fuselage skin (1) corresponding to the airtight box (3) is the reinforced structure part of the aircraft fuselage, specifically the fuselage "well" shaped reinforced structure (5).

6. The antenna connection structure on a fairing according to claim 1, characterized in that: The side wall of the airtight box (3) is an inclined surface which is larger at the bottom and smaller at the top.

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