Stroller Caster Lock Mechanism for Pin-Hole Alignment
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Solution Overview
Problem
Conventional wheeled childcare devices, such as strollers, suffer from operability issues due to misalignment of lock pins and lock holes in the caster wheels, which can lead to malfunctioning and malfunctions.
Innovation Solution
A wheeled childcare device comprising a body frame, a caster mechanism, a caster lock member, a displacement member, and an operation mechanism, where the caster lock member is configured to restrict or permit pivoting of the caster pivot member based on the position of the push bar, with biasing members ensuring proper alignment and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lock pin and lock hole are not aligned, then the lock pin fails to fit into the lock hole, but this misalignment degrades operability and may lead to malfunctions
Solution Approach 1:
The patent introduces a guide member as an intermediary component between the lock pin and lock hole. The guide member includes a guide hole that receives the lock pin and guides its movement, ensuring proper alignment. This intermediary structure prevents misalignment issues and ensures reliable locking while maintaining ease of operation.
2Device complexity
If the caster lock member is directly operated without alignment guidance, then the operation mechanism is simple, but misalignment occurs between the lock pin and lock hole
Solution Approach 1:
The guide member serves as a mediator that does not significantly increase mechanism complexity while ensuring alignment precision. The guide hole in the guide member simply receives and guides the lock pin, providing alignment without requiring complex adjustment mechanisms.
Solution Approach 2:
The guide member pre-aligns the lock pin with the lock hole before the locking action occurs. By providing a guided path for the lock pin movement, the alignment is established in advance, preventing misalignment during the locking operation.
Data Source
AI summary
A wheeled childcare device includes: a body frame; a caster mechanism including a caster holding member and a caster pivot member and configured to allow a front wheel or a rear wheel to swivel; a caster lock member provided in the caster mechanism and configured to assume a lock position and an unlock position; a displacement member configured to be displaced between a first position corresponding to the lock position of the caster lock member and a second position corresponding to the unlock position of the caster lock member; a first biasing member configured to bias the displacement member toward the second position; and a drive member provided on the push bar and configured to be switched between a first state and a second state.