Modular Magnetic Armrest Design for Easy Replacement and Customization
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Solution Overview
Problem
Existing armrests for chairs are not easily replaceable and customizable, leading to wear and tear issues and compromised user comfort due to fixed integration with the chair and material differences.
Innovation Solution
A modular armrest design featuring a first member with recesses and magnets, and a second member with a cavity and magnetizable plate members, allowing for secure attachment and easy replacement or customization of the armrest components, including a shell, cover, and cushion made from various materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If armrests are fixedly attached to the chair, then the armrests are stable and secure, but they cannot be replaced or customized when worn out or when user preferences change
Solution Approach 1:
The armrest system is divided into separate components: a first member with magnets and a second member with magnetizable plate members. This segmentation allows the armrest to be easily detached and replaced while maintaining secure attachment during use, resolving the contradiction between replaceability and secure attachment.
Solution Approach 2:
The traditional mechanical fastening system (screws, clips, or adhesive) is replaced with a magnetic attachment system. The magnets and magnetizable plate members provide secure attachment through magnetic force, yet allow easy separation when needed, enabling both reliability and adaptability.
2Adaptability or versatility
If armrests are made with different materials (memory foam and hard plastic), then various functional requirements are met, but the material differences are obvious and compromise user comfort
Solution Approach 1:
A skin layer is applied over the hard plastic housing to create a uniform soft surface that contacts the user. This flexible outer layer masks the underlying hard plastic, providing consistent tactile comfort while maintaining the structural benefits of the hard housing and the comfort benefits of soft materials like memory foam.
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 replace or customize armrests without replacing the entire chair, improving user comfort by minimizing movement and allowing for tailored design, material, and texture preferences, enhancing the overall user experience.
Implementation Method 1
one or more magnets disposed in the one or more recesses; and one or more magnetizable plate members disposed in the cavity, the one or more magnetizable plate members are adjacent the one or more magnets when the first member is received in the cavity
Data Source
AI summary
An armrest for a chair includes a first member and a second member. The first member includes a body extending in a longitudinal direction from a first end to a second end. The body includes one or more recesses. The first member also includes one or more magnets disposed in the one or more recesses. The second member is releasably attached to the first member. The second member includes a cavity configured to receive the first member and one or more magnetizable plate members disposed in the cavity. The one or more magnetizable plate members are adjacent the one or more magnets when the first member is received in the cavity.