Adjustable Kettlebell with Coaxial Weight Plates and Dual Locking Mechanism
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Solution Overview
Problem
Traditional kettlebells have a crude appearance causing discomfort, require multiple weights for different exercises, and existing adjustable kettlebells alter the center of gravity and size, making them inconvenient and difficult to use.
Innovation Solution
A kettlebell with a heavy metallic frame and coaxial, annular weights that nest together without changing the center of gravity, a shroud for wrist comfort, and a quick-detach system with a dual locking mechanism for easy weight adjustment, along with a base for storage and a comfortable molded plastic handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional kettlebells use a fixed weight design, then the structure is simple and reliable, but the user requires multiple kettlebells for different exercises, increasing storage space and device complexity
Solution Approach 1:
The kettlebell weight system is segmented into a frame and multiple removable weight plates. The frame contains a receptacle that can accommodate different combinations of weight plates, allowing users to adjust the total weight by adding or removing individual plates. This segmentation enables weight customization without requiring multiple complete kettlebell units.
Solution Approach 2:
The weight plates are designed to nest within the frame's receptacle. Each weight plate fits into the same receptacle space, with larger plates accommodating smaller ones. This nesting arrangement allows multiple weight options to be stored compactly within a single kettlebell frame, reducing storage requirements while maintaining weight adjustability.
2Adaptability or versatility
If adjustable weights are added to the kettlebell, then weight versatility is improved, but the center of gravity changes, affecting exercise performance
Solution Approach 1:
The weight plates are designed with asymmetric mass distribution relative to the frame's center of gravity. Each plate is positioned and shaped so that its center of mass aligns with the frame's central axis. This asymmetric design ensures that regardless of which combination of plates is used, the overall center of gravity remains consistent at the same location, maintaining exercise performance characteristics.
3Ease of manufacture
If traditional kettlebells use a spherical shape, then the structure is simple, but the ball shape and iron material cause discomfort and bruising to the user
Solution Approach 1:
The frame is designed with non-uniform wall thickness and localized structural variations. The receptacle area has modified geometry with rounded edges and contoured surfaces that conform to the user's body. These local quality modifications reduce pressure points and discomfort during exercise while maintaining the overall spherical shape and structural simplicity for ease of manufacture.
4Adaptability or versatility
If weights are made removable and replaceable, then weight adjustability is improved, but there are difficulties in exchanging weights quickly and attaching them securely
Solution Approach 1:
The weight plates are designed to be completely extractable from the frame's receptacle. Each plate has a removal mechanism that allows it to be taken out individually without affecting other plates or requiring tools. This extraction design enables quick weight changes by simply removing unwanted plates and inserting desired ones, improving ease of operation while maintaining secure attachment when properly installed.
Data Source
AI summary
An improved exercise device in the nature of a kettlebell. The device has a frame covered by a shroud that is configured to lessen the impact of the device on the user. There are a plurality of weights that can be easily attached and detached from the frame to increase or lessen the load to the user. The weights are designed so that they can be added or taken away without altering the center of gravity of the device or the external physical shape of the device. There is also a base that holds the device while the weights are being changed and which also interacts with the device to assist in that exchange. The attaching and detaching system includes a pin that is used to affix the weights to the frame. A dual locking system assures that the pin does not inadvertently come loose during use of the device.