Rollator Folding Frame Structure for Stable Compact Storage
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Solution Overview
Problem
Existing rollators with X-shaped cross pipe designs suffer from instability during use, leading to swaying and safety hazards due to inadequate folding stability.
Innovation Solution
A rollator design featuring symmetrically arranged left and right frames with two foldable frames connected by a rotary shaft and connection rod mechanisms, ensuring stable folding and unfolding through articulated rods and limit blocks for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If an X-shaped cross pipe design is adopted to achieve compact folding, then the rollator body becomes more compact and convenient to carry and store, but the stability during use deteriorates with left and right frames swaying back and forth
Solution Approach 1:
The rollator frame is divided into multiple independent foldable sections (first foldable frame, second foldable frame) that can rotate and fold independently along the center of a rotary shaft. This segmentation allows each section to be optimized for both compactness and stability, resolving the contradiction between folded volume and folding stability.
Solution Approach 2:
The rollator employs dynamic folding mechanisms with rotary shafts and articulated rods that enable smooth rotation and folding movements. The dynamic connection rod mechanisms provide real-time structural adjustment during folding and unfolding, maintaining stability while achieving compact storage configuration.
2Device complexity
If a single tube folded rollator is used to reduce structure complexity, then the device becomes simpler, but stability during use deteriorates with swaying and safety hazards
Solution Approach 1:
The patent combines multiple foldable frames (first foldable frame, second foldable frame) with rotary shafts and connection rod mechanisms to create an integrated folding system. This merging of components provides redundant structural support that enhances reliability while maintaining reasonable complexity through systematic integration.
Solution Approach 2:
The rotary shaft and connection rod mechanisms serve as intermediary elements that mediate between the left and right frames, providing stable rotational movement and structural support. These intermediary components ensure reliable force transmission and maintain stability during folding and use.
Data Source
AI summary
A rollator that can be stably folded is provided, which includes a left frame, a right frame, a first foldable frame, and a second foldable frame. The left frame and the right frame are symmetrically arranged; the first foldable frame and the second foldable frame are provided between the left frame and the right frame and can rotate and be folded along a center of a rotary shaft. The first foldable frame is connected to the second foldable frame through the rotary shaft. One end of the first foldable frame is connected to the left frame through a first connection rod mechanism, and the other end thereof is hinged to the right frame. One end of the second foldable frame is connected to the right frame through a second connection rod mechanism, and the other end thereof is hinged to the left frame.