Single-Motor Adjustable Bed Rail-Slider Mechanism to Reduce Complexity
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Solution Overview
Problem
Current electric beds with multi-link mechanisms for angle adjustment are complex and lack stability, affecting comfort during adjustment.
Innovation Solution
A single motor adjustable multi-function bed design featuring a fixed mechanism, movable mechanism, and back panel, where the back panel is hinged and connected via a connecting rod, allowing for automatic adjustment of bed length and backrest angle using a driver, with elastic connectors for enhanced stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-link mechanism is used for angle adjustment, then angle adjustment function is achieved, but structural complexity increases and stability deteriorates
Solution Approach 1:
The patent extracts and removes the complex multi-link mechanism from the bed structure, replacing it with a simplified rail-slider system. The movable rail is directly fixed to the side plate, and the sliding part moves along the rail to achieve angle adjustment, eliminating the need for multiple links and joints while maintaining the adjustment function.
Solution Approach 2:
The bed structure is segmented into fixed mechanism, movable mechanism, and back panel, with each having independent functions. The movable rail and sliding part are separated components that work together through a clear division of labor, reducing overall system complexity while preserving adjustability.
2Adaptability or versatility
If multi-link mechanism is used for angle adjustment, then angle adjustment function is achieved, but adjustment stability deteriorates
Solution Approach 1:
The unstable multi-link mechanism is extracted and replaced with a more stable rail-slider system. The sliding part moves along the fixed movable rail under gravitational force, providing stable and predictable adjustment without the complexity and instability of multiple links.
Solution Approach 2:
The patent replaces the mechanical multi-link system with a gravity-based sliding mechanism. The sliding part utilizes gravitational force to move along the rail, providing stable and controlled adjustment without relying on complex mechanical linkages that compromise stability.
3Device complexity
If single motor and rail-slider mechanism is used, then structural complexity is reduced, but adjustment speed may be limited
Solution Approach 1:
The sliding part moves continuously along the movable rail under the action of gravity and motor drive, providing smooth and continuous adjustment throughout the range of motion. This continuous action ensures efficient adjustment speed while maintaining structural simplicity.
Solution Approach 2:
The system utilizes dynamic gravitational force acting on the sliding part to enhance adjustment speed. As the sliding part moves along the rail, gravity provides a natural accelerating force that complements the motor drive, enabling faster adjustment without increasing mechanical complexity.
Data Source
AI summary
The invention discloses a single motor adjustable multi-function bed, which comprises a fixed mechanism, a movable mechanism and a back panel. The fixed mechanism comprises a fixed frame, a movable rail is arranged symmetrically on both sides of the fixed frame, and one end of the fixed frame is provided with a first cross bar. The movable mechanism comprises a movable frame, a sliding part arranged symmetrically on both sides of the movable frame, a second cross bar arranged in the middle part of the movable frame, the movable rail engages with the sliding part, and the bottom of the back panel is connected with the first cross bar. And a driver is provided between the first cross bar and the second cross bar. The invention realizes the angle adjustment and the bed length adjustment function by the movable rail in conjunction with the sliding part.