Modular Handle Adapter With Rotational Joint for Limb Differences
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Solution Overview
Problem
Existing devices for operating two-handed vehicles or equipment with limb differences are often generic, ill-fitting, and fail to provide the necessary security and control, making it difficult and unsafe for individuals with limb differentials to use such equipment.
Innovation Solution
A modular handle adapter system featuring a split coupling mount, rotational joint, and differential limb socket with interchangeable components, including a quick-release connector and adjustable rotational resistance, to accommodate various limb shapes and sizes, ensuring secure and comfortable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If generic handle adapters are used for limb differences, then device simplicity is maintained, but adaptability and comfort are insufficient
Solution Approach 1:
The handle adapter is divided into multiple interchangeable components including different socket types (ball socket, cup socket, four-way hinge), various inserts for different limb sizes, and adjustable elements. This segmentation allows users to assemble the appropriate configuration for their specific limb characteristics without requiring a completely different device for each case.
Solution Approach 2:
The adapter system is designed with universal compatibility across multiple handle types and vehicle applications. The same basic adapter structure can accommodate various limb types through interchangeable inserts and socket configurations, making it applicable to bicycles, motorcycles, ATVs, strollers, and other equipment with handles.
2Ease of operation
If fixed-configuration handle adapters are used, then manufacturing simplicity is maintained, but comfort and security for diverse users are insufficient
Solution Approach 1:
The adapter incorporates adjustable and interchangeable elements that allow the configuration to be dynamically changed based on user needs. Different inserts can be swapped to accommodate various limb circumferences, and socket types can be changed to match different grip requirements, enabling the same base structure to adapt to diverse user requirements.
3Reliability
If simple attachment mechanisms are used, then ease of installation is maintained, but security and control are insufficient
Solution Approach 1:
The adapter utilizes spherical ball-and-socket joint mechanisms that provide secure attachment through curved surfaces. The ball socket configuration creates a mechanically stable connection that resists detachment while allowing necessary rotational movement for steering and control operations.
Data Source
AI summary
A limb differential handle adapter is disclosed including a split coupling mount, a rotational joint, and a differential limb socket. The split coupling mount is configured to removably attach to a handle. The split coupling mount has an internal surface configured to contact the handle and an external surface. The rotational joint is configured to removably attach to and extend from the external surface of the split coupling mount. The rotational joint includes a socket, an interface disposed in the socket, and a shaft extending from the interface. The differential limb socket is configured to receive a differential limb and includes at least one replaceable modular insert proportioned to accommodate the differential limb. The differential limb socket is removably coupled to the rotation joint. A limb differential handle adapter kit is disclosed further including interchangeable components for the at least one replaceable modular insert and a plurality of shims.