Parachute attachment device for a fixed-wing drone

Abstract

This utility model discloses a parachute fixing device for a fixed-wing unmanned aerial vehicle (UAV). The UAV includes a fuselage with a cabin on its upper part. The parachute fixing device includes a square shell housed within the cabin and limiting devices arranged around the perimeter of the shell. The limiting devices include a U-shaped slide rail, a T-shaped perforated lug, and a bearing. The T-shaped perforated lug is slidably mounted on the U-shaped slide rail via the bearing. The U-shaped slide rail is vertically positioned within the shell. This utility model ensures that the parachute is completely retracted within the shell during normal flight, preventing aerodynamic interference. In emergency deployment, the tension of the parachute lines causes the T-shaped perforated lug to move rapidly upward along the slide rail, evenly transferring the impact load to the fuselage. This ensures the reliability of the parachute's instantaneous deployment and achieves the effect of evenly transmitting the parachute's impact force axially to the main load-bearing structure of the fuselage. This effectively prevents the fixing device from loosening or shifting due to turbulence, airflow, or other factors during flight, ensuring the stability of the parachute upon deployment.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicles (UAVs), specifically to a parachute fixing device for a fixed-wing UAV. Background Technology

[0002] During the flight of a fixed-wing drone, unexpected malfunctions may occur (such as power system failure or control system abnormalities). In such cases, a parachute is needed to safely recover the drone and prevent it from crashing, causing equipment damage, and potentially creating safety hazards. Whether the parachute can deploy smoothly and operate stably in an emergency largely depends on the reliability of the parachute securing device.

[0003] Existing fixed-wing UAVs typically use a single connection point for their parachute securing devices. At the moment of parachute deployment, the high impact load is concentrated in a localized area of ​​the fuselage, which can easily cause fatigue fracture or deformation of the top of the fuselage. Some parachute securing devices only fix the parachute lines to the top of the fuselage through metal connectors, failing to effectively transfer the force to the entire fuselage or other structures. When the UAV is flying at high speed or encounters turbulence, it is prone to loosening or displacement, which may lead to delays in parachute deployment or abnormal deployment attitude. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a parachute fixing device for a fixed-wing unmanned aerial vehicle.

[0005] The technical solution of this utility model:

[0006] A parachute fixing device for a fixed-wing unmanned aerial vehicle (UAV) is disclosed. The UAV includes a fuselage with a cabin on the upper part. The parachute fixing device includes a square shell disposed inside the cabin and a limiting device disposed around the perimeter of the shell. The limiting device includes a U-shaped slide rail, a T-shaped perforated lug, and a bearing. The T-shaped perforated lug is slidably mounted on the U-shaped slide rail via the bearing. The U-shaped slide rail is vertically disposed inside the shell.

[0007] Furthermore, the upper perimeter of the housing is provided with metal connectors, and the housing is fixed to the machine body by the metal connectors and rivets. Beneficial effects

[0008] This invention arranges four U-shaped slide rails inside the shell, allowing T-shaped perforated lugs to slide on the U-shaped slide rails via bearings. During normal drone flight, the parachute is completely retracted into the shell to avoid aerodynamic interference. In emergency deployment, the tension of the parachute lines causes the T-shaped perforated lugs to move rapidly upward along the slide rails, evenly transferring the impact load to the fuselage. This ensures the reliability of the parachute's instantaneous deployment and effectively distributes the load through metal connectors, achieving the effect of evenly transmitting the parachute's impact force axially to the main load-bearing structure of the fuselage. Through the synergistic effect of the above structures, the entire device significantly improves the overall structural connection strength, effectively preventing the fixing devices from loosening or shifting due to turbulence, airflow, or other factors during drone flight, thus ensuring the stability of the parachute when it needs to deploy. At the same time, the smooth movement of the T-shaped perforated lugs during operation provides a good foundation for the smooth deployment of the parachute, reducing the risk of jamming during deployment. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the present invention or the prior art, the accompanying drawings used in the description of the invention or the prior art will be briefly introduced below.

[0010] Figure 1 This is a schematic diagram of the structure of the parachute fixing device for a fixed-wing UAV provided in this utility model example;

[0011] Figure 2 This is another structural schematic diagram of the parachute fixing device for the fixed-wing UAV provided in this utility model embodiment;

[0012] Figure 3 This is a partial schematic diagram of the parachute fixing device for a fixed-wing UAV provided in this utility model embodiment;

[0013] Figure 4 This is a diagram showing the parachute in the retracted state.

[0014] Figure 5 This is a diagram showing the parachute in operation.

[0015] In the diagram: fuselage 10, fixed-wing UAV dorsal air intake 20, fixed-wing UAV main wing 30, parachute fixing device 40, fixed-wing UAV V-tail 50, fixed-wing UAV tail exhaust port 60, shell 401, limiting devices 402, 403, 404, 405, U-shaped slide rail 4041, T-shaped perforated lug 4042, bearing 4043, metal connector 4044. Detailed Implementation

[0016] The present invention can be further described through the following embodiments; however, the scope of the present invention is not limited to the following embodiments. It should be understood that the embodiments described herein are disclosed by way of illustration only, and the present invention is not intended to limit its scope to the details of the construction and arrangement of the components described below or illustrated in the figures. Furthermore, in describing preferred embodiments, specific terminology will be used for clarity. It should be understood that each specific term includes all technical equivalents that operate in a similar manner to achieve a similar purpose.

[0017] Example: Please refer to Figures 1 to 3 As shown, the fixed-wing UAV includes a fuselage 10, a dorsal air intake 20, a main wing 30, a parachute fixing device 40, a V-shaped tail fin 50, and a tail exhaust port 60. The fuselage 10 has a cabin on its upper part. The parachute fixing device 40 includes a square shell 401 installed inside the cabin and limiting devices installed around the inside of the shell 401. The limiting devices include a U-shaped slide rail 4041, a T-shaped perforated lug 4042, and a bearing 4043. The T-shaped perforated lug 4042 is slidably mounted on the U-shaped slide rail 4041 through the bearing 4043. The U-shaped slide rail 4041 is vertically installed inside the shell 401. Furthermore, the U-shaped slide rail 4041 is fixedly connected to the shell 401 by bolts.

[0018] In this embodiment, metal connectors 4044 are provided around the upper part of the housing 401. The housing 401 is fixed to the body 10 by the metal connectors 4044 and rivets. Furthermore, the metal connectors 4044 are connected to the housing 401 by rivets. Even further, the metal connectors 4044 are corner-edge connectors.

[0019] In actual operation, the parachute is fixed to the four T-shaped perforated lugs 4042 by four parachute lines passing through the holes of the four limiting devices. When the drone is in a landing or standby state, the T-shaped perforated lugs 4042 will remain at the bottom of the U-shaped slide rail 4041 under its own gravity (e.g., Figure 4 As shown), at this time, the entire parachute is fully retracted within the shell 401, and will not interfere with the normal flight of the drone; however, when the drone encounters an emergency and needs to deploy the parachute, under the tension of the parachute lines, the parachute lines will drag the T-shaped perforated lug 4042 to the top of the U-shaped slide rail 4041 (as shown). Figure 5 As shown), the parachute lines straighten, and the impact load on the parachute lines at the moment of opening is transmitted to the shell 401 through four limiting devices and then to the fuselage 10, so that the force is concentrated on the fuselage 10, thereby improving the stability and reliability of the parachute operation.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A parachute securing device for a fixed-wing unmanned aerial vehicle (UAV), the UAV comprising a fuselage (10) and a cabin on the upper part of the fuselage (10), characterized in that, The parachute fixing device includes a square shell (401) installed inside the cabin and a limiting device installed around the inside of the shell (401). The limiting device includes a U-shaped slide rail (4041), a T-shaped perforated lug (4042) and a bearing (4043). The T-shaped perforated lug (4042) is slidably mounted on the U-shaped slide rail (4041) via the bearing (4043). The U-shaped slide rail (4041) is vertically installed inside the shell (401).

2. The parachute securing device according to claim 1, characterized in that, The upper part of the housing (401) is provided with metal connectors (4044), and the housing (401) is fixed to the body (10) by the metal connectors (4044) and rivets.

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