Air Conditioner Cover Attachment Using Single Hook and Temporary Tab
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Solution Overview
Problem
Conventional air-conditioning apparatus designs with two hooks and two hook holes make it difficult for users to attach the cover due to obscured visibility, making the process cumbersome and hard to manage.
Innovation Solution
An air-conditioning apparatus with a single hook protruding from the cover and a temporarily fixing tab on the opposite side, allowing easy attachment by engaging the hook onto the inner periphery of the casing, providing clear visibility and simplifying the attachment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two hooks and two hook holes are used to attach the cover, then the cover can be securely fixed to the casing, but the user cannot see the hook parts clearly making attachment difficult
Solution Approach 1:
The patent extracts only one hook from the cover, removing unnecessary hooks that obstruct visibility. This single hook is positioned to engage with a corresponding hook hole on the casing, providing sufficient fixation while eliminating visual obstruction. The temporarily fixing tab serves as a separate alignment aid, allowing users to see and align components clearly during attachment.
Solution Approach 2:
The temporarily fixing tab acts as an intermediary element that facilitates the attachment process. It provides a visible alignment reference point that users can easily see and align with the casing before final engagement, bridging the gap between visibility requirements and secure fixation needs.
2Strength
If two hooks are provided on the cover, then the cover can be firmly attached to the casing, but the attachment process becomes troublesome and time-consuming
Solution Approach 1:
The patent removes one hook from the cover design, reducing the number of engagement points from two to one. This simplification decreases the time required for attachment while maintaining adequate fixation strength through the combination of the single hook and temporarily fixing tab mechanism.
Solution Approach 2:
The temporarily fixing tab enables preliminary alignment and positioning of the cover on the casing before final engagement. Users can quickly align the tab with its corresponding feature on the casing, establishing proper positioning that facilitates rapid and accurate hook engagement, thereby reducing overall attachment time.
3Manufacturing precision
If two hook holes are engaged simultaneously with two hooks, then the cover can be properly positioned, but the user cannot see the hook parts due to the cover blocking the view
Solution Approach 1:
By removing one hook and retaining only a single hook on the cover, the patent eliminates the visual obstruction caused by multiple hooks. The single hook is positioned such that users can clearly see it and align it with the corresponding hook hole on the casing, maintaining positioning precision while improving visibility.
Solution Approach 2:
The temporarily fixing tab serves as a visible intermediary reference point that users can easily detect and align with the casing. This tab provides clear visual feedback during the positioning process, enabling users to achieve proper alignment without being obstructed by the cover, thereby maintaining positioning precision while improving detectability.
Data Source
AI summary
The indoor unit of an air-conditioning unit includes: an opening; a cover; a heat medium heat exchanger; and an air processing unit. The air purge valve is positioned on a rear side in a projection direction of the opening inside the casing. The cover includes, on its one side, a single hook protruding from its cover body. The cover includes, on its side opposite to the one side, a temporarily fixing tab configured to temporarily fix the cover to the casing with the cover body closing the opening.