Caster Braking Assembly with Unified Multi-Wheel Lock Mechanism
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Solution Overview
Problem
Wheeled seats with individual wheel brakes require users to apply brakes to multiple wheels separately to prevent movement and unlock them individually, which is cumbersome and inefficient.
Innovation Solution
A braking assembly with a switch and linkages that simultaneously engage or disengage the brakes of multiple caster wheels, using a pushrod and cross member to apply braking force to both wheels when the switch is activated, and a catch mechanism to maintain the engaged position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brakes are applied to multiple caster wheels individually, then the seat can be securely locked, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines multiple individual brake operations into a single unified brake assembly. The linkage mechanism integrates the brake arms and actuation components so that one switch operation simultaneously applies brakes to multiple caster wheels, resolving the contradiction between secure locking and ease of operation
Solution Approach 2:
The brake assembly serves multiple functions through a single mechanism: it can apply brakes to multiple wheels simultaneously, provide a locked position through the catch mechanism, and maintain the locked state without continuous user input. This multi-functionality eliminates the need for separate brake operations on each wheel
2Ease of operation
If a single switch controls multiple brakes, then the operation is simplified, but the device complexity increases
Solution Approach 1:
The brake assembly is segmented into distinct functional modules: the linkage mechanism for force transmission, the brake arms for applying braking force to each wheel, and the catch mechanism for maintaining the locked position. This segmentation allows the complex function of multi-wheel braking to be achieved through simpler, standardized components that can be manufactured and assembled independently
Data Source
AI summary
A caster braking assembly that has a base section, a first caster assembly coupled to the base section and having at least one wheel, a second caster assembly coupled to the base section and having at least one wheel and a brake switch pivotally repositionable between an engaged position and a disengaged position. When the brake switch is in the engaged position at least one wheel of both the first caster assembly and the second caster assembly are substantially restricted from rotating.