End Cap Assembly with Dual Limit Structures for Lock Shaft Stability
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Solution Overview
Problem
The stability of the lock shaft in the locked and unlocked positions is compromised in existing window air conditioners, leading to difficulty in maintaining the relative rotation between the outdoor and connection components.
Innovation Solution
An end cap assembly with a first limit structure to stabilize the lock shaft in the locked position and a second limit structure to stabilize it in the unlocked position, using mechanisms like snaps or magnetic attractions to secure the operation member in specific states, ensuring the lock shaft remains stable during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pull tab pin is used to unlock relative rotation between the outdoor unit component and the connection component, then rotation during mounting is enabled, but the pull tab pin cannot stay stably in an unlocked position or a locked position
Solution Approach 1:
The locking mechanism is divided into two independent limit structures: a first limit structure for stabilizing the locked position and a second limit structure for stabilizing the unlocked position. This segmentation allows each structure to be optimized for its specific function, resolving the contradiction between ease of operation and reliability by providing dedicated stabilization for each state.
Solution Approach 2:
The operation member acts as an intermediary between the lock shaft and the user. It transmits the user's pulling force to the lock shaft while being constrained by the two limit structures. This intermediary mechanism enables stable position holding while maintaining ease of operation for rotation during mounting.
2Ease of operation
If the pull tab pin is pulled outwards to unlock, then relative rotation is enabled, but it is difficult for the pull tab pin to stay stably in the unlocked position
Solution Approach 1:
The second limit structure extracts and addresses the specific problem of unstable unlocked position by providing a dedicated constraint mechanism for this state. This separate stabilization structure ensures that once the pull tab pin is pulled outwards to unlock, it remains stably in the unlocked position without requiring constant user intervention.
3Adaptability or versatility
If the lock shaft is pushed or pulled between locked and unlocked positions, then rotation control is achieved, but the lock shaft cannot maintain stable positions without additional limit structures
Solution Approach 1:
The first and second limit structures are merged into a single integrated end cap assembly that houses both limiting mechanisms. This merging approach provides comprehensive position stabilization for the lock shaft while maintaining a compact and relatively simple overall structure, balancing adaptability with device complexity.
Data Source
AI summary
An end cap assembly includes an end cap having an accommodation cavity and including first and/or second limit structure, a lock shaft, a reset member configured to push the lock shaft from an unlocked position to a locked position, and an operation member connected to the lock shaft and configured to pull the lock shaft from the locked position to the unlocked position. When the lock shaft is pushed to the locked position, the first limit structure engages with the operation member in limiting manner to limit the operation member in an accommodated state in which the operation member is accommodated in the accommodation cavity. When the lock shaft is pulled to the unlocked position, the second limit structure engages with the operation member in limiting manner to limit the operation member is limited in a pulled-out position at which the operation member is partially outside the accommodation cavity.