Adjustable Dumbbell Rotating Grip Mechanism
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Solution Overview
Problem
Current adjustable dumbbells have cumbersome disassembly and assembly processes for weight plates, making them inefficient and unsafe for users.
Innovation Solution
An adjustable dumbbell design featuring a rotating grip with abutting ribs and a limiting member, along with an elastic connection mechanism, allows for easy attachment and detachment of weight plates through a single rotation, and a locking mechanism to secure the plates during use, enhancing safety and ease of operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional weight plate mounting methods are used, then weight plates can be securely mounted on the grip, but the disassembly and assembly operations become cumbersome
Solution Approach 1:
The patent employs a dynamic assembly mechanism where the grip rotates to automatically engage or disengage weight plates through interacting mechanical elements (abutting ribs, limiting members, protrusions, and insertion holes). This dynamic rotation-based mechanism transforms static mounting into an active, controllable process that is both secure and operationally simple
Solution Approach 2:
The weight plate assembly system is designed to be self-servicing through the rotation mechanism. When the grip rotates, the abutting ribs automatically drive the limiting members to translate, causing protrusions to insert into or separate from insertion holes without requiring additional manual operations. The system performs its own assembly and disassembly functions through the single rotational action
2Ease of operation
If weight plates are easily detachable, then operation convenience is improved, but safety and security of connection may be compromised
Solution Approach 1:
The patent incorporates preliminary locking action through the interaction between protrusions and insertion holes. Before the weight plate can be detached, the rotation mechanism must first overcome the engaged state where protrusions are inserted into insertion holes. This preliminary engagement ensures secure connection during use while allowing controlled detachment when rotation is applied
Solution Approach 2:
The limiting members with abutting ribs create a preliminary anti-action force that prevents unintended detachment. During normal use, the limiting members maintain the weight plates in a secured position, resisting any forces that might cause accidental separation. Detachment requires deliberate rotational action to overcome this preliminary anti-action
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
The design simplifies the connection and separation of weight plates, ensuring a secure and safe operation by allowing flexible adjustment of weight configurations with minimal effort, improving user experience and safety.
Implementation Method 1
The two ends of the elastic member abut against the adapter and the limiting member, respectively, so that the limiting member and the adapter are elastically connected
Implementation Method 2
When the rotating member rotates, the rotating member abuts against the abutting ribs to drive the limiting member to translate
Data Source
AI summary
An adjustable dumbbell includes a base, a grip, and a plurality of sets of dumbbell plate assemblies connected on both sides of the grip. The dumbbell plate assembly includes a rotating member, an adapter, a limiting member and a weight plate. The rotating member rotates with the grip. The limiting member is located between the rotating member and the adapter. The limiting member fits with and is connected to the adapter in a non-rotatable manner. When the rotating member rotates, the rotating member abuts against the abutting rib to drive the limiting member to translate, so that the protrusion is inserted into or separated from the insertion hole to connect or separate the limiting member and the adapter.