Spring-Biased Latch Mechanism for Tool-Free Roller Replacement
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Solution Overview
Problem
Existing muscle roller products lack a simple and tool-free mechanism for easy roller replacement, making it difficult for users to switch between different rollers for various massage needs, and requiring additional time and support for maintenance or replacement.
Innovation Solution
A roller system with a latch assembly that allows for quick and single-handed removal and replacement of rollers, featuring a latch with a spring-biased ramp mechanism that locks and unlocks the roller assembly onto the axle, enabling users to switch rollers within seconds without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a latch assembly mechanism is added to enable roller replacement, then ease of operation and adaptability are improved, but device complexity increases
Solution Approach 1:
The roller system is divided into separable components: the roller assembly and the axle assembly with latch mechanism. This segmentation allows the roller to be independently removed and replaced without affecting the core axle structure, enabling easy maintenance and customization while keeping the overall system manageable in complexity
Solution Approach 2:
The latch assembly is designed to be user-operable without requiring external tools or technical support. The spring-loaded latch automatically engages and disengages when the roller is inserted or removed, allowing users to perform replacements themselves through simple manual actions rather than requiring service personnel
2Reliability
If a spring-loaded latch mechanism is used for secure locking, then reliability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The latch mechanism is integrated into the axle assembly as a unified component rather than being a separate attachment. The spring, latch arm, and engagement features are combined into a single manufactured unit, which simplifies the manufacturing process compared to assembling multiple separate parts, while still providing reliable spring-loaded locking
Solution Approach 2:
The roller assemblies are designed as replaceable consumable components with simpler construction than permanent integrated rollers. This allows them to be manufactured cost-effectively and replaced when worn or damaged, while the more complex (but durable) latch mechanism in the axle assembly can be reused many times
3Adaptability or versatility
If rollers are made removable for easy replacement, then adaptability and ease of repair are improved, but stability of connection and reliability may worsen
Solution Approach 1:
The latch mechanism is pre-configured in the axle assembly to automatically engage with the roller upon insertion. This preliminary preparation of the locking mechanism ensures that when a roller is installed, it is immediately and securely locked into place without requiring additional tightening or adjustment steps, maintaining connection stability while enabling easy replacement
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
Enables users to easily select and switch between different rollers for various massage needs, reducing maintenance time, and allowing for individual roller replacement without technical support, enhancing user convenience and product versatility.
Implementation Method 1
The latch assembly may also have a latch spring biased to maintain a portion of the latch exposed
Implementation Method 2
The latch assembly may include a button spring biased to maintain the button in the locked configuration in the absence of an actuation force on the button
Data Source
AI summary
A roller system is disclosed that includes a roller axle with a longitudinal axis that houses at least a portion of a latch assembly. The latch assembly includes a latch with an exposed portion that moves substantially orthogonal to the longitudinal axis. The system also has a roller assembly that removably fits around the roller axle and has a latch catch. The system has two configurations: (1) a locked configuration, where the exposed portion of the latch obstructs the latch catch from sliding, thereby locking the roller assembly onto the roller axle; and (2) an unlocked configuration, where the exposed portion of the latch is moved towards the longitudinal axis, thereby allowing the latch catch to slide past, separating the roller assembly from the roller axle.