Bendable Elastic Cushion with Curved Guide Rail Adjustment Mechanism
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Solution Overview
Problem
Traditional elastic cushions with hinges are laborious to adjust, requiring users to press down the backrest to unlock, making the adjustment process cumbersome.
Innovation Solution
A bendable elastic cushion with a mechanism comprising curved guide rails and a backrest frame that slides along these rails, allowing angle adjustment without the need to unlock manually, facilitated by elastic locking members and a center distance adjustment mechanism to prevent interference between elastic units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional hinges are used for angle adjustment, then the backrest can be adjusted between lying mode and backrest mode, but the adjustment process becomes laborious and complex requiring pressing down to unlock
Solution Approach 1:
The patent extracts the locking function from the hinge mechanism by introducing separate elastic locking members that independently engage with curved guide rails. This separation allows the backrest to slide freely along the curved path without requiring manual unlocking, eliminating the pressing-down action needed in traditional hinge systems.
Solution Approach 2:
The elastic locking members automatically engage with the curved guide rails at specific positions during the sliding motion. The system self-regulates the locking and unlocking actions based on the backrest's position, eliminating the need for user intervention to unlock the mechanism during adjustment.
2Ease of operation
If elastic locking members are introduced to enable smooth sliding adjustment, then angle adjustment becomes easier and stepless, but the mechanism structure becomes more complex
Solution Approach 1:
Instead of using a complex locking mechanism that requires unlocking, the patent inverts the approach by using elastic locking members that automatically engage and disengage based on the sliding motion itself. The curvature of the guide rails naturally controls when locking occurs, simplifying the overall control mechanism.
Solution Approach 2:
The curved guide rails provide a geometric path that naturally controls the locking and unlocking of the elastic locking members. The curvature transforms linear sliding motion into angular adjustment while automatically managing the locking states at different positions along the arc.
3Adaptability or versatility
If multiple elastic units are used to form the cushion, then comfort and flexibility are improved, but interference between elastic units may occur affecting adjustment smoothness
Solution Approach 1:
The cushion is divided into multiple independent elastic units that can be individually adjusted. Each unit operates independently along the curved guide rail path, preventing interference between adjacent units while maintaining overall cushion flexibility and comfort.
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
Enables smooth, stepless angle adjustment of the backrest frame relative to the horizontal plane, improving user experience by simplifying the adjustment process and preventing elastic unit interference.
Implementation Method 1
When the one or more elastic locking members are in the unlocked state, the positioning pin compresses the spring to accumulate an elastic reset force
Data Source
AI summary
An adjustment mechanism of a bendable elastic cushion includes a base, a backrest frame, and one or more curved guide rails. The one or more curved guide rails are fixedly connected to the base, and the backrest frame is slidably connected to the one or more curved guide rails, so as to change an angle between the backrest frame and a horizontal plane by sliding the backrest frame along a direction in which the one or more curved guide rails extend.