Stroller Wheel Swivel Limiter with Cam-Driven Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional swivel limiting devices for strollers are complex and inconvenient to operate due to the need to align a limiting member with a direction limiting hole before insertion, making it difficult to change the moving direction of the stroller.
Innovation Solution
A device with a fixed seat, positioning groove, driving member, and limiting member that allows the limiting member to extend and retract automatically into a positioning groove on the fork, preventing rotation when engaged and allowing rotation when disengaged, using a camming surface and resilient members for self-alignment and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional swivel limiting device with an elongate limiting member and direction limiting hole is used, then the stroller moving direction can be limited, but the operation becomes inconvenient and structure becomes complicated due to alignment requirements
Solution Approach 1:
The limiting member is designed to be movable between extended and retracted positions rather than fixed. It can extend to engage the positioning groove for limiting swivel, and retract to allow free rotation, providing dynamic adaptability to different operational states without requiring manual alignment
Solution Approach 2:
The camming surface mechanism enables the limiting member to automatically extend and retract in response to wheel rotation, eliminating the need for manual alignment operations. The system serves itself by using the wheel's rotational motion to drive the limiting member's movement through the camming action
2Adaptability or versatility
If a conventional swivel limiting device with alignment requirement is used, then the stroller moving direction can be limited, but the structure becomes complicated
Solution Approach 1:
The driving member with camming surface combines multiple functions into a single component: it drives the extension and retraction of the limiting member, provides self-alignment through its geometric shape, and transmits the rotational motion from the wheel to the limiting member. This merging reduces the number of separate parts and simplifies the overall structure
Solution Approach 2:
The limiting member serves multiple functions: it acts as a locking element when extended to engage the positioning groove, and as a non-obstructive component when retracted to allow free wheel rotation. The driving member also performs multiple roles including actuation, alignment, and motion transmission
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides a simple and convenient way to limit the swivel of the stroller wheel, allowing easy direction change without manual alignment, ensuring reliable locking and unlocking of the fork to the frame, and facilitating easy assembly and disassembly.
Implementation Method 1
The driving member has a camming surface rotatable to drive extension and retraction of the limiting member
Implementation Method 2
a resilient member extending and retracting the limiting member in response to rotation of the driving member
Data Source
AI summary
A device for limiting swivel of a wheel includes a fixed seat, a positioning groove, a driving member, and a limiting member. The fixed seat permits a fork to be connected pivotally thereto, and permits a frame to be connected fixedly thereto. The driving member is connected rotatably to the fixed seat. The limiting member is mounted extendably and retractably on the fixed seat. The positioning groove is disposed to the fork. The limiting member is extendable from the fixed seat to engage the positioning groove so as to prevent rotation of the fork, and is retractable into the fixed seat to remove from the positioning groove to allow for rotation of the fork. The driving member has a caroming surface rotatable to drive extension and retraction of the limiting member.