Monocoque frame structure of inspection drone
The monocoque frame structure with a continuous curved surface and claw-shaped engagement addresses the issues of damage and maintenance inefficiency in conventional drones, providing high rigidity and ease of assembly for stable and efficient inspections.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- DAK SRL
- Filing Date
- 2026-01-19
- Publication Date
- 2026-04-22
AI Technical Summary
Conventional inspection drones face issues with damage risk due to obstacle contact in narrow spaces and complex outer shapes, leading to decreased flight stability and inefficient maintenance.
A monocoque frame structure composed of polycarbonate resin with a continuous curved surface and a claw-shaped engagement mechanism, integrating a top and bottom part for high rigidity and ease of assembly.
The design enhances flight stability, reduces obstacle contact, and facilitates efficient maintenance, ensuring safe and stable inspections in confined spaces.
Smart Images

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Abstract
Description
Technical Field
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[0001] The present invention relates to the structure of a drone used for inspecting buildings, equipment, indoor and outdoor structures, etc. In particular, it relates to an inspection drone having a monocoque frame structure that is lightweight, has high rigidity, and is suitable for use in narrow spaces. Regarding the inspection drone.
Background Art
[0002] Conventional inspection drones generally have a structure in which a plurality of frame members are combined. Protrusions and steps were likely to occur on the exterior. Therefore, during inspections in narrow spaces such as inside pipes and in the ceiling space, There was a problem that it was easy to get caught on obstacles, leading to damage to the aircraft body and a decrease in flight stability. Also, in a structure where the exterior members are fixed by screwing or the like, When a part is damaged due to falling or collision, it takes time and effort for repair or replacement, There was also a problem that the efficiency of the inspection work decreased. Problems to be solved by the invention
[0003] In recent years, the use of small drones has been increasing for inspection purposes such as indoor equipment, piping, and narrow spaces. However, With conventional drones, due to their complex outer shape, they are likely to come into contact with obstacles, There was a risk of damage to the aircraft body and interruption of the inspection work. In view of these problems, the present invention Reduces the risk of getting caught on obstacles during inspection work in narrow spaces, And aims to provide an inspection drone that is lightweight, has high rigidity, and is excellent in maintainability. Means for solving the problems
[0004] The inspection drone of the present invention Comprises a monocoque frame formed of polycarbonate resin. The monocoque frame consists of a top part and a bottom part. It consists of two parts, The aforementioned top part and bottom part, The claw-shaped engagement structure allows them to fit together and become one, The outer circumference of the aforementioned monocoque frame is It is characterized by being composed of continuous curved surfaces. The function of the invention.
[0005] According to this invention, the monocoque frame is constructed of two members, By integrating these with a claw-shaped engagement structure, It can achieve high rigidity while remaining lightweight. Furthermore, by making the outer perimeter of the frame a continuous curved shape, When inspecting narrow spaces such as inside pipes or above ceilings, This reduces the likelihood of contact with or getting caught on obstacles. This enables safe and stable flight. (Effect of the design)
[0006] This invention provides the following effects. (1) The monocoque structure enables the realization of a lightweight and high-strength frame. The flight stability and durability of inspection drones will be improved. (2) By making the outer circumference of the frame a continuous curved shape, It can prevent getting caught on obstacles in confined spaces. (3) Because of its simple structure, it is easy to maintain. This contributes to improving the efficiency of inspection work. [Explanation of Symbols]
[0007] 1 Top part 2 Bottom parts 3. Claw-shaped engagement structure [Brief explanation of the drawing]
[0008] [Figure 1] This is a perspective view showing the external appearance of an inspection drone according to the present invention, equipped with a monocoque frame, and illustrating that the outer periphery is composed of a continuous curved surface. [Figure 2] This is an exploded perspective view showing the two-part structure of the top and bottom parts that constitute the monocoque frame of the inspection drone according to the present invention. [Figure 3] This is a perspective view showing the state in which the top part and bottom part of the inspection drone according to the present invention are fitted together and integrated by a claw-shaped engagement structure, with the fitted portion shown in an enlarged view in a callout, and an explanatory diagram showing only the fitted portion as a cross-section.
Claims
1. It features a monocoque frame made of polycarbonate resin, The monocoque frame is composed of two members: a top part and a bottom part. The aforementioned top part and bottom part, An inspection drone characterized by its ability to be fitted together and integrated through a claw-shaped engagement structure.
2. In the inspection drone described in claim 1, The outer circumference of the monocoque frame is composed of a continuous curved surface. An inspection drone characterized by having an external shape that reduces snagging on obstacles.