Baby Stroller Backrest Angle Mechanism for One-Handed Adjustment
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Solution Overview
Problem
Existing baby strollers require simultaneous operation of both hands to adjust the backrest angle and lack automatic folding capabilities, complicating the folding process.
Innovation Solution
A backrest angle adjusting mechanism with a locking member that slides between supports, driven by a driving member, allowing single-handed angle adjustment and automatic folding/unfolding of the backrest tube with the stroller frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If locking mechanisms are provided on both sides of the backrest for angle adjustment, then the backrest angle can be adjusted, but both hands need to operate simultaneously which reduces ease of operation
Solution Approach 1:
The patent combines two separate locking mechanisms into a single integrated locking member that can control both sides of the backrest simultaneously. This locking member includes first and second locking portions that engage with corresponding locking holes on opposite sides of the backrest, allowing single-handed operation while maintaining stable angle adjustment.
Solution Approach 2:
The locking member serves multiple functions: it locks both sides of the backrest, enables angle adjustment, and facilitates automatic folding. By integrating these functions into a single component, the patent reduces operational complexity while maintaining versatility in backrest control.
2Ease of operation
If the backrest is designed as a separate adjustable mechanism, then seating comfort can be ensured, but the folding process becomes complicated when the stroller is folded
Solution Approach 1:
The patent merges the backrest folding function with the stroller frame folding mechanism. The backrest tube is pivotally connected to the seat in a manner that allows it to automatically follow and fold with the stroller frame, eliminating separate folding operations and simplifying the overall folding process.
Solution Approach 2:
The backrest automatically folds and unfolds itself through its pivotal connection to the seat and frame. When the stroller frame is folded, the backrest tube naturally follows the folding motion without requiring manual intervention, and when unfolded, it automatically returns to its original position through the mechanical linkage.
3Ease of operation
If a single locking member controls both sides of the backrest, then ease of operation improves, but the locking member structure becomes more complex
Solution Approach 1:
The locking member is segmented into distinct functional portions: first and second locking portions for engaging opposite sides of the backrest, a driving portion for receiving operational input, and a connecting portion that ties these functions together. This segmentation allows complex functionality to be achieved through modular design, making the overall structure more manageable.
Data Source
AI summary
A backrest angle adjusting mechanism including a first support, a second support, a locking member and a reset member. The first and second supports are pivotally connected to each other and are respectively connected to a backrest tube and a stroller frame, and multiple engaging stages are formed between the first and second supports. The locking member is slidably provided between the first and second support. The locking member is engaged at any engaging stage when at a lock position, and when the driving member moves, the locking member is located at a release position, thereby implementing angle adjustment of the backrest tube. Automatic folding of the backrest tube is achieved by folding the frame stroller or by a seat fabric pulling the backrest tube that moves with the stroller frame. A baby stroller having the backrest angle adjusting mechanism is also disclosed.