Outdoor Unit Panel Structure for Tight-Space Attachment Alignment
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Solution Overview
Problem
Existing outdoor units of air-conditioning apparatuses with openings in the outer casing for installation or maintenance face difficulties in panel attachment and detachment due to insufficient workspace behind the unit, leading to misalignment issues when fixing screws, especially when a wall is nearby.
Innovation Solution
The design includes a first panel with a side panel and a back panel of L-shape cross section, featuring a plate-like first claw portion that protrudes upward from the back panel, allowing it to be easily fixed between two plates in the body, reducing tilt and misalignment, and facilitating screw hole alignment with the body's female screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a panel is screwed and fixed to a back portion of a body, then the panel can be securely attached, but it becomes difficult to attach and detach the panel when a wall surface is positioned in the vicinity due to insufficient workspace
Solution Approach 1:
The panel attachment mechanism is divided into two stages: first, the hooked claw portions are inserted into the body to provide initial positioning and support; second, screws are used to secure the panel. This segmentation allows the panel to be easily positioned without requiring significant workspace behind the unit, while still achieving secure attachment through the screw fixation step.
Solution Approach 2:
The hooked claw portions perform a preliminary action by being inserted into the body before screw attachment. This preliminary positioning action reduces the workspace requirement during the final screwing operation, as the panel is already partially secured and aligned by the claw portions.
2Ease of operation
If a panel is fixed to a back portion of a body with hooked claw portions, then the panel can be attached without sufficient workspace, but the degree of unsteadiness and tilt of the panel increases
Solution Approach 1:
The hooked claw portions act as an intermediary element between the panel and the body. They provide initial support and positioning that stabilizes the panel during the screw attachment process, reducing tilt and misalignment while enabling attachment in limited workspace conditions.
Solution Approach 2:
The combination of hooked claw portions and screws changes the attachment parameters from a single-point fixation to a multi-point system. The claw portions provide initial positional constraints, while the screws provide final secure fixation, collectively improving panel stability and reducing tilt.
3Ease of operation
If the panel is fixed with hooked claw portions before screwing, then attachment is possible in limited space, but the amount of misalignment between screw holes and female screws increases
Solution Approach 1:
The hooked claw portions perform a preliminary alignment action by positioning the panel relative to the body before screw attachment. This preliminary positioning reduces misalignment between screw holes and female screws, making the subsequent screwing operation easier and more precise.
Solution Approach 2:
The hooked claw portions serve as an intermediary alignment mechanism that guides the panel into correct position relative to the screw holes. This intermediary structure ensures better alignment between the panel features and body features during the attachment process.
Data Source
AI summary
An outer casing of an outdoor unit of an air-conditioning apparatus includes: a body in which a first opening is formed to be continuous in a side portion and a back portion; and a first panel that covers the first opening and whose cross section has an L shape. The first panel includes: a side panel that covers a part formed in the side portion of the first opening; a back panel that covers a part formed in the back portion of the first opening; and a plurality of claw portions. One of the plurality of claw portions is a first claw portion having a plate-like shape and protruding upward from an upper end portion of the back panel. The back portion of the body includes: a first plate having a lower end portion in which a cutout is formed; and a second plate disposed forward of the first plate.