Infant carrier and backrest adjusting mechanism thereof
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Solution Overview
Problem
Infant carriers lack a backrest adjusting mechanism, leading to discomfort for infants who must maintain a fixed posture for extended periods, as existing designs do not allow for angle adjustments to accommodate user needs.
Innovation Solution
A backrest adjusting mechanism is introduced, comprising an outer cover, inner cover, driving member, locking member, and operating member, which enables angle adjustment of the backrest tube through a linkage system, allowing users to easily lock or release the outer and inner covers for adjusting the backrest angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a backrest adjusting mechanism is added to the infant carrier, then the adaptability and comfort for different user needs is improved, but the device complexity increases
Solution Approach 1:
The backrest structure is divided into an outer cover and an inner cover that can pivot relative to each other. The locking member is segmented with multiple locking portions that can engage with different positions. This segmentation allows independent adjustment of the backrest angle while maintaining a relatively simple overall structure.
Solution Approach 2:
The backrest adjusting mechanism transitions from a static fixed structure to a dynamic adjustable structure. The inner cover can pivot relative to the outer cover, and the locking member can move between locked and unlocked states. This dynamic capability enables angle adjustment while using simple mechanical components.
2Stability of the object's composition
If a locking mechanism is implemented to secure the backrest angle, then the stability of the adjusted position is improved, but the ease of operation deteriorates
Solution Approach 1:
The mechanism uses spring-loaded locking portions that automatically engage with corresponding positions on the outer cover when the inner cover is rotated to a desired angle. The user simply needs to rotate the inner cover, and the locking portions self-engage without requiring manual locking actions. This maintains ease of operation while ensuring stable positioning.
Solution Approach 2:
The locking member acts as an intermediary between the inner cover and outer cover. It translates the rotational movement of the inner cover into automatic engagement with specific locking positions on the outer cover. This intermediary mechanism provides stable positioning while requiring minimal user intervention.
3Adaptability or versatility
If multiple locking portions are provided for different angles, then the adaptability for various positions is improved, but the device complexity increases
Solution Approach 1:
The locking member is designed as a universal component with multiple locking portions that can engage with corresponding positions on the outer cover. This single multi-functional locking member replaces what would otherwise require multiple separate locking mechanisms for different angles, thereby providing multiple adjustable positions without proportionally increasing complexity.
Data Source
AI summary
A backrest adjusting mechanism disposed between a backrest tube and a frame of an infant carrier includes an outer cover fixed at the frame, an inner cover connected to the backrest tube and pivoted to the outer cover, a driving member movably disposed between the outer and inner covers, a locking member movably disposed on the driving member, and an operating member connected to the driving member for driving the driving member between first and second positions. Switching of the driving member between the first position and the second position drives the locking member to selectively lock or release the outer cover and the inner cover. Two first locking portions are disposed on the outer cover, a second locking portion is disposed on the inner cover, and the locking member is cooperated with the second locking portion and selectively cooperated with one of the two first locking portions.