A landing gear canopy structure and an aircraft model

Abstract

This utility model relates to the field of landing gear technology, and in particular to a landing gear canopy structure and an aircraft model. The landing gear canopy structure includes a landing wheel assembly and a canopy assembly; the landing wheel assembly includes a landing gear strut that can swing up and down, and landing wheels mounted on the landing gear strut; the canopy assembly includes a canopy, a canopy frame, and a spring, with the canopy hinged to the landing gear bay and the canopy frame; the landing gear strut can push the canopy frame upwards; the spring can push the canopy frame downwards. When the landing gear strut rises, it pushes the canopy frame upwards, compressing the spring, and the canopy frame causes both canopies to close. When the landing gear strut descends, the spring pushes the canopy frame downwards, and the canopy frame causes both canopies to open. This structure uses one canopy frame to open or close two canopies, making it simpler and more conducive to the layout and wiring within the landing gear bay.

Description

Technical Field

[0001] This utility model relates to the field of landing gear technology, and in particular to a landing gear canopy structure and an aircraft model. Background Technology

[0002] Model aircraft, also known as aviation models, are model airplanes built to resemble actual aircraft. Belonging to the category of aerospace models, they are unmanned aircraft designed for recreational use. The landing gear bay of a model aircraft houses the landing gear and a canopy. When the model aircraft lands, the canopy opens and the landing gear lowers; after takeoff, the landing gear retracts into the landing gear bay and the canopy closes. Some models on the market have a linked landing gear and canopy, with the opening and closing of the canopy controlled by the retraction and descent of the landing gear. Some canopy structures use a cross or crossbar structure, with the landing gear pressing against this cross structure to control the retraction and extension of the landing gear. This type of canopy structure is overly complex, resulting in a less compact layout within the landing gear bay and potentially affecting the internal layout of the bay.

[0003] For example, Chinese patent application number CN202320509047.5 discloses a landing gear retraction device for a fixed-wing model aircraft with a self-locking structure. Specifically, it discloses that "at least one hatch is installed at the opening of the landing gear bay, and the hatch is hinged to the landing gear bay; it also includes at least one set of pressure arm mechanisms, each corresponding to at least one hatch. The pressure arm mechanism includes a spring arm and a hook rod. One end of the hook rod is hinged to the side wall of the landing gear bay cavity, one end of the spring arm is hinged to the inner wall of the corresponding hatch, and the other end of the spring arm is hinged to the middle of the hook rod. The rotation trajectory of the landing gear intersects with the rotation trajectory of the hook rod; the pressure arm mechanism also includes a return spring, one end of which is fixed to the side wall of the landing gear bay cavity, and the other end of which is fixed to the middle of the hook rod." "When retracting the landing gear, the front end of the landing gear acts on the upper part of the spring arm, pressing the spring arm upwards. As the spring arm swings downwards, the hook rod will drive the hatch to close, achieving the purpose of closing the hatch." This design features a double-spring arm structure, which is a complex, intersecting structure that makes the layout inside the landing gear bay less compact and can affect the internal layout of the landing gear bay. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a landing gear bay cover structure that is simple in structure, makes the layout inside the landing gear bay more compact, and is more conducive to the layout inside the landing gear bay, thereby overcoming the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This application provides a landing gear canopy structure, including a landing wheel assembly and a canopy assembly; the landing wheel assembly includes a landing gear strut that can swing up and down, and landing wheels mounted on the landing gear strut; The hatch assembly includes a hatch, a hatch frame, and a spring. The hatch is hinged to the landing gear bay and the hatch frame. The landing gear strut can push the hatch frame to rise. The spring can push the hatch frame to fall.

[0006] Preferably, the canopy assembly further includes a guide frame disposed within the landing gear bay; a spring is disposed within the guide frame; and the end of the canopy frame extends into the guide frame and can compress the spring.

[0007] Preferably, the guide frame has a hollow structure inside, the spring is disposed inside the hollow structure, and the cover plate seals the hollow structure.

[0008] Preferably, the canopy frame has a lifting section with an arc-shaped opening; the landing gear strut can lift the canopy frame at the arc-shaped opening.

[0009] Preferably, the inner wall of the landing gear bay is provided with a mounting groove, the guide frame is embedded in the mounting groove, and the end of the canopy frame abuts against the corresponding guide frame.

[0010] Preferably, a first connecting rod is hinged between the first connecting part of the hatch and the hatch frame; a U-shaped second connecting part is provided on the hatch, which is hinged to the inner wall of the landing gear bay.

[0011] Preferably, a mounting plate is provided at the mounting opening at the bottom of the landing gear bay, and the second connecting part is hinged to the mounting plate.

[0012] Preferably, the landing gear assembly further includes a wheel frame, a hinge, and a hydraulic rod. The landing gear is mounted on the wheel frame, and the hinge connects the landing gear strut and the wheel frame. The hydraulic rod is connected to the top of the landing gear strut and can drive the landing gear strut to swing up and down.

[0013] This application provides an aircraft model, including the aforementioned landing gear canopy structure; wherein the landing gear canopy structure is provided on both the nose and the fuselage.

[0014] This invention has significant advantages and beneficial effects compared with existing technologies. Specifically, as shown in the above technical solution, the canopy is hinged to the landing gear bay and the canopy frame. When the landing gear strut rises, the strut pushes the canopy frame upwards, compressing the spring, and the canopy frame causes both canopies to close. When the landing gear strut descends, the spring pushes the canopy frame downwards, and the canopy frame causes both canopies to open. This structure uses one canopy frame to open or close two canopies, making it simpler and more conducive to the layout and wiring within the landing gear bay. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the landing gear in the deployed state according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the landing gear in the retracted state according to an embodiment of this utility model.

[0017] Figure 3 This is an exploded view of an embodiment of the present invention.

[0018] Figure 4 This is a bottom view schematic diagram of an embodiment of the present utility model.

[0019] Figure 5 This is an exploded view of an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram: 10. Landing wheel assembly; 11. Landing gear strut; 12. Landing wheel; 13. Wheel frame; 14. Hinge; 15. Hydraulic rod; 16. Landing gear bay; 17. Mounting slot; 20. Canopy assembly; 21. Canopy frame; 22. Lifting section; 23. Arc-shaped opening; 24. Guide frame; 25. Spring; 26. First connecting rod; 27. Mounting plate; 28. Canopy; 29. ​​Second connecting section; 210. Cover plate. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Example 1 Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a landing gear canopy structure.

[0023] Among them, the hatch frame 21 can simultaneously drive the two hatches 28 to rise or fall at the same time. This structure is simpler and more conducive to the layout and wiring inside the landing gear bay 16.

[0024] This application provides a landing gear canopy structure 16, including a landing wheel assembly 10 and a canopy assembly 20. The landing wheel assembly 10 includes a landing gear strut 11 that can swing up and down, and landing wheels 12 mounted on the landing gear strut 11. The canopy assembly 20 includes a canopy 28, a canopy frame 21, and a spring 25. The canopy 28 is hinged to the landing gear bay 16 and the canopy frame 21. The landing gear strut 11 can push the canopy frame 21 upward; the spring 25 can push the canopy frame 21 downward. The landing gear strut 11 can be a hydraulic rod / spring rod. When the landing gear strut 11 swings upward, it causes the canopy frame 21 to rise, the spring 25 to be compressed, and the canopy 28 to close. When the landing gear strut 11 swings downward, the elastic force of the spring 25 pushes the canopy frame 21 downward, causing the canopy 28 to open. A single canopy frame 21 drives two or a single canopy 28 to close or open, a structure that makes the interior of the landing gear bay 16 more compact and more conducive to the internal layout.

[0025] Preferably, the canopy device 20 further includes a guide frame 24 disposed within the landing gear bay 16; a spring 25 disposed within the guide frame 24; and the end of the canopy frame 21 extending into the guide frame 24 and capable of compressing the spring 25. The guide frame 24 has a hollow internal structure, with the spring 25 disposed within this hollow structure, and a cover plate 210 sealing the hollow structure. The spring 25 is disposed inside the guide frame 24, and the cover plate 210 seals the guide frame 24. The end of the canopy frame 21 extends into the guide frame 24; when the canopy frame 21 rises, the spring 25 is compressed; when the canopy frame 21 descends, the spring 25 unfolds. The guide frame 24 is embedded in a mounting groove 17 on the inner wall of the landing gear bay 16, and the end of the canopy frame 21 abuts against the corresponding guide frame 24. The canopy frame 21 can limit the movement of the guide frame 24, resulting in a simpler installation structure and easier assembly.

[0026] Preferably, the canopy frame 21 has a lifting section 22 with an arc-shaped opening 23; the landing gear strut 11 can lift the canopy frame 21 at this arc-shaped opening 23. This structure allows the landing gear strut 11 to precisely lift the canopy frame 21 at the designed position, reducing wear on the canopy frame 21 and improving its fit. More specifically, the lifting section 22 is located in the middle of the canopy frame 21, making the force on the canopy frame 21 more even and balanced.

[0027] Preferably, a first connecting rod 26 is hinged between the first connecting portion 211 of the canopy 28 and the canopy frame 21; a U-shaped second connecting portion 29 is provided on the canopy 28, which is hinged to the inner wall of the landing gear bay 16. The upper end of the first connecting rod 26 is hinged to the canopy frame 21, and the lower end of the first connecting rod 26 is hinged to the first connecting portion 211; the second connecting portion 29 is U-shaped, which allows the canopy 28 to open at an angle of 90 degrees, and the canopy 28 opens very smoothly and stably.

[0028] Preferably, a mounting plate 27 is provided at the mounting opening at the bottom of the landing gear bay 16, and the second connecting part 29 is hinged to the mounting plate 27. The mounting plate 27 can be attached to the bottom of the landing gear bay 16 using screws or glue. The first end of the second connecting part 29 is hinged to the mounting plate 27, and the second end of the second connecting part 29 is hinged to the canopy 28. At the same time, the lower end of the first connecting rod 26 is hinged to the first connecting part. This design allows the opening angular velocity of the canopy 28 to reach 90° or even greater, and the installation of the canopy 28 is also very firm and stable.

[0029] Preferably, the landing gear assembly 10 further includes a wheel frame 13, a hinge 14, and a hydraulic rod 15. The landing gear 12 is mounted on the wheel frame 13, and the hinge 14 connects the landing gear strut 11 and the wheel frame 13. The hydraulic rod 15 is connected to the top end of the landing gear strut 11 and can drive the landing gear strut 11 to swing up and down. The upper end of the landing gear strut 11 is also hinged. The landing gear strut 11 can swing up and down. The output end of the hydraulic rod 15 is hinged to the upper end of the landing gear strut 11, and this hydraulic rod 15 is used to drive the landing gear strut 11 to swing up and down. The landing gear strut 11 has a cushioning effect. The hinge 14 is V-shaped, which improves the firmness of the installation between the wheel frame 13 and the landing gear strut 11, and controls the elongation of the landing gear strut 11.

[0030] Example 2 Embodiment 2 includes the landing gear canopy structure of Embodiment 1, and the same structural and functional parts will not be described again. This application provides an aircraft model, including the aforementioned landing gear canopy structure; wherein, the landing gear canopy structure 16 is provided on both the nose and the fuselage. This landing gear canopy structure 16 makes the internal layout and wiring of the aircraft model more compact and flexible, and makes maintenance more convenient.

[0031] In summary, the key design feature of this invention is that the hatch 28 is hinged to the landing gear bay 16 and the hatch frame 21. The landing gear strut 11 pushes the hatch frame 21 upward, and the hatch frame 21 causes the two hatches 28 to close. When the landing gear strut 11 descends, the spring 25 pushes the hatch frame 21 downward. The hatch frame 21 causes the two hatches 28 to open or close simultaneously. This structure is simpler and facilitates the layout and wiring within the landing gear bay 16.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A landing gear bay door structure, characterised in that: It includes a landing wheel assembly (10) and a hatch assembly (20); the landing wheel assembly (10) includes a landing gear strut (11) that can swing up and down, and landing wheels (12) mounted on the landing gear strut (11). The canopy assembly (20) includes a canopy (28), a canopy frame (21), and a spring (25). The canopy (28) is hinged to the landing gear bay (16) and the canopy frame (21). The landing gear strut (11) can push the canopy frame (21) to rise. The spring (25) can push the canopy frame (21) to fall.

2. A landing gear bay door structure according to claim 1, characterised in that: The canopy assembly (20) also includes a guide frame (24) disposed in the landing gear bay (16); a spring (25) is disposed in the guide frame (24); the end of the canopy frame (21) extends into the guide frame (24) and can compress the spring (25).

3. A landing gear bay door structure according to claim 2, characterised in that: The guide frame (24) has a hollow structure inside, and the spring (25) is set inside the hollow structure. The cover plate (210) seals the hollow structure.

4. A landing gear bay door structure according to claim 1, characterised in that: The canopy frame (21) has a lifting part (22) with an arc-shaped opening (23); the landing gear strut (11) can lift the canopy frame (21) at the arc-shaped opening (23).

5. A landing gear bay door structure according to claim 2, characterised in that: The inner wall of the landing gear bay (16) is provided with a mounting groove (17), the guide frame (24) is embedded in the mounting groove (17), and the end of the canopy frame (21) abuts against the corresponding guide frame (24).

6. A landing gear bay door structure according to claim 1, characterised in that: The first connecting part (211) of the hatch (28) is hinged to the hatch frame (21) by a first connecting rod (26); the hatch (28) is provided with a U-shaped second connecting part (29), which is hinged to the inner wall of the landing gear bay (16).

7. A landing gear bay door structure according to claim 6, wherein: A mounting plate (27) is provided at the mounting port at the bottom of the landing gear bay (16), and the second connecting part (29) is hinged to the mounting plate (27).

8. A landing gear bay door structure according to claim 1, characterised in that: The landing gear assembly (10) also includes a wheel frame (13), a hinge (14), and a hydraulic rod (15). The landing gear (12) is mounted on the wheel frame (13), and the hinge (14) connects the landing gear strut (11) and the wheel frame (13). The hydraulic rod (15) is connected to the top of the landing gear strut (11) and can drive the landing gear strut (11) to swing up and down.

9. An aircraft model, characterised in that: The landing gear canopy structure includes any one of claims 1-8; wherein the landing gear canopy structure is provided on both the nose and the fuselage.

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