Stroller Backrest Angle Mechanism for One-Hand Adjustment
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Solution Overview
Problem
Existing baby strollers require simultaneous operation of both hands to adjust the backrest angle and do not automatically fold with the stroller frame, 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-hand 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 ends of the backrest for angle adjustment, then the backrest angle can be adjusted, but simultaneous operation of both hands is required making manipulation inconvenient
Solution Approach 1:
The patent combines two separate locking mechanisms into a single integrated locking mechanism that controls both ends of the backrest simultaneously. The locking member engages with locking grooves at both ends of the backrest tube through a unified structure, allowing one-handed operation while maintaining stable locking at both ends.
Solution Approach 2:
The single locking member serves multiple functions: it locks both ends of the backrest tube simultaneously, provides angle adjustment through engagement with multiple locking grooves, and enables one-handed operation. This multi-functional design eliminates the need for separate locking mechanisms at each end.
2Ease of operation
If the backrest is designed as an adjustable mechanism, then seating comfort is ensured, but the backrest cannot automatically fold with the stroller frame complicating the folding operation
Solution Approach 1:
The patent combines the backrest angle adjustment function with the stroller folding function through a unified mechanical linkage. The locking mechanism is integrated with the folding structure so that when the stroller frame folds, the backrest automatically follows the folding motion and locks into position without requiring separate manual operation.
Solution Approach 2:
The backrest folding mechanism is designed to automatically fold along with the stroller frame without requiring manual intervention. The mechanical linkage between the frame and backrest ensures that frame folding automatically drives backrest folding, and the locking member automatically engages with locking grooves to secure the backrest in its folded position.
Data Source
AI summary
The present invention discloses 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, and has a lock position and a release position. The locking member is engaged at any engaging stage when at the lock position; when the driving member moves, the locking member is driven to slide and depart from the engaging stage and becomes located at the release position, thereby implementing angle adjustment of the backrest tube. During a folding process of the stroller frame, automatic folding of the backrest tube can be achieved by folding the frame stroller or by a seat fabric pulling the backrest tube that then moves with the stroller frame, thereby better simplifying operations of angle adjustment of the backrest tube and folding of a baby stroller. The present invention further discloses a baby stroller having the backrest angle adjusting mechanism.