Expansion Control Assembly Latch Mechanism
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Solution Overview
Problem
Existing expansion control assemblies for medical beds lack efficient mechanisms for adjusting the side decks between retracted and expanded positions, leading to cumbersome operation and potential instability.
Innovation Solution
The proposed expansion control assembly includes a stabilizer connected to a deck frame, a sliding member, a bottom bracket with retaining elements, and a latch with an engaging element that allows the adjustable side deck to move between retracted and expanded positions through a simple and secure mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional expansion control mechanism is used, then the side deck can be adjusted between retracted and expanded positions, but the operation becomes cumbersome and stability is compromised
Solution Approach 1:
The latch mechanism transitions from a static locked state to a dynamic movable state through rotational movement of the tab. The engaging element can dynamically engage or disengage from retaining elements based on the latch's position, enabling easy transition between locked and unlocked states while maintaining stability when locked
Solution Approach 2:
The engaging element acts as an intermediary between the latch and the retaining elements. It transfers the rotational motion of the latch to the linear movement required for locking/unlocking, providing a mechanical advantage that enables easy operation while ensuring secure engagement with the retaining elements
2Ease of operation
If a simple locking mechanism is used, then ease of operation is improved, but the security and reliability of the locked position deteriorates
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: the latch body, the tab for user interaction, the engaging element for locking, and multiple retaining elements for positioning. This segmentation allows each component to perform its specific function efficiently, maintaining simplicity while ensuring reliable operation
Solution Approach 2:
The compression element (spring) provides self-service by automatically urging the engaging element toward the retaining elements, ensuring positive engagement without requiring additional user action. The mechanism self-regulates to maintain the locked state, reducing the need for complex control systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables smooth and secure adjustment of the side decks, enhancing operational efficiency and stability, while also providing a secure locking mechanism to maintain the desired position.
Implementation Method 1
a compression element connected between the adjustable side deck and the latch, wherein the compression element urges the engaging element towards the bottom bracket
Data Source
AI summary
An expansion control assembly may include a stabilizer connected to a deck frame, the stabilizer having a lateral receiver and a sliding member extending through the lateral receiver, the sliding member connected to an adjustable side deck. An expansion control assembly may include a bottom bracket connected to the stabilizer, the bottom bracket comprising a first retaining element and a second retaining element. An expansion control assembly may include a latch pivotally connected to the adjustable side deck, the latch comprising a first tab and an engaging element configured to engage the first retaining element and the second retaining element. Methods of moving an adjustable side deck may include rotation of the latch away from the bottom bracket and sliding the latch away from, or towards, the deck frame.