Kettlebell Locking Module Prevents Accidental Weight Plate Separation
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Solution Overview
Problem
Conventional kettlebells have an adjusting unit that may be unintentionally operated, causing weight plates to separate from the main body, leading to unintended weight adjustments during use.
Innovation Solution
A kettlebell design featuring a base seat with an adjusting module and a locking module that allows the user to switch between locking and unlocking states, along with a lift seat and coupling module, which includes support pins that can be rotated between support and separate positions, preventing accidental weight plate separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the adjusting unit is made operable to rotate support pins between support and separate positions, then the weight of the kettlebell becomes adjustable, but the adjusting unit may be unintentionally operated causing weight plates to separate from the main body
Solution Approach 1:
The locking module is designed to automatically engage with the adjusting module to prevent unintended operation. The locking state creates a preliminary counter-action that blocks any accidental rotation of the axial rod, while still allowing intentional adjustment when the user deliberately operates the operating lever to switch to unlocking state.
Solution Approach 2:
The system transitions from a static locked state to a dynamic adjustable state through deliberate user action. The locking module can switch between locked and unlocked states, allowing the adjusting unit to be either fixed (preventing accidental changes) or operable (allowing intentional weight adjustment) based on user need.
2Reliability
If the support pin is positioned to support the weight plate, then the weight plate remains attached to the main body, but the adjusting unit cannot be operated to change weight configuration
Solution Approach 1:
The locking module provides a dynamic state change capability. When the user needs to adjust weight, they can operate the operating lever to switch the locking module from locked to unlocked state, enabling adjustment. After adjustment, the locking module returns to locked state to secure the new configuration, thus alternating between security and operability as needed.
Solution Approach 2:
The locking module automatically engages and disengages based on the operational state. When the axial rod is in a stable position, the locking module self-activates to lock the position. When the operating lever is operated, the locking module self-disengages to allow movement, then re-engages when the new position is reached, reducing the need for continuous manual intervention.
3Reliability
If the locking module is always engaged to prevent accidental operation, then unintentional weight plate separation is prevented, but intentional weight adjustment becomes difficult
Solution Approach 1:
The operating lever serves as an intermediary mechanism between the user's intent and the locking module. By operating the lever, the user mediates the transition of the locking module from locked to unlocked state. This intermediary action provides a clear, deliberate interface that distinguishes intentional adjustment from accidental movement, maintaining security while enabling ease of operation.
Solution Approach 2:
The locking module is designed with dynamic switching capability rather than being permanently engaged. The module can transition between locked and unlocked states through simple operation of the operating lever, making intentional adjustment easy while maintaining reliable protection against accidental separation when locked.
Data Source
AI summary
A kettlebell includes a base seat, a plurality of weight plates stacked on the base seat, and a lift seat separably disposed on the base seat. The base seat includes a base main body, an adjusting module mounted to the base main body for adjusting configuration of the lift seat and the weight plates, and a locking module mounted in the base main body. The locking module is operable to switch between a locking state in which the locking module engages the adjusting module such that the adjusting module is not operable, and an unlocking state in which the locking module disengages from the adjusting module such that the adjusting module is operable.