Foldable Dumbbell Bench with Locking Hinges and Elbow Support
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Solution Overview
Problem
Existing dumbbell benches are either unable to support specific weightlifting actions due to the lack of an elbow pad or require significant space post-folding, and often lack a stable locking mechanism during use.
Innovation Solution
A foldable dumbbell bench design with a cushion part, backrest part, and elbow pad part, featuring limited hinging and rotating mechanisms, along with locking systems using bolts and pins, to facilitate compact storage and stable use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dumbbell bench includes an elbow pad to support specific weightlifting actions, then the functionality is improved, but the device cannot be folded completely and takes up large space after folding
Solution Approach 1:
The elbow pad is divided into a first support pipe connected to the front leg pipe and a second support pipe that can be folded relative to the first support pipe. This segmentation allows the elbow pad to maintain its supporting function during exercise while enabling complete folding for compact storage when not in use.
2Volume of stationary object
If a dumbbell bench is designed to be foldable for space saving, then the storage convenience is improved, but the structure may shake during use due to lack of locking function
Solution Approach 1:
The connecting piece incorporates both a bolt for hinging (allowing movement) and a pin for locking (preventing movement). This dynamic design enables the bench to transition between a locked stable state during exercise and an unlocked foldable state for storage, resolving the contradiction between stability and foldability.
3Ease of operation
If a dumbbell bench uses a hinging connection between front and rear leg parts, then the foldability is improved, but the connection may become unstable without proper locking mechanism
Solution Approach 1:
The connection system uses a bolt to create a hinged connection that allows folding motion, while a pin can be inserted to lock the connection in place during use. This provides both the ease of folding operation and the reliability of a stable connection when needed.
Solution Approach 2:
The connection transitions between two parameter states: unlocked (for folding) and locked (for stability). The pin insertion changes the structural parameter from movable to fixed, ensuring connection stability during exercise while maintaining foldability when the pin is removed.
Data Source
AI summary
The present disclosure provides a dumbbell bench, comprising a front leg part and a rear leg part, wherein the front leg part is hinged with the rear leg part in a limited manner, the front leg part is provided with a cushion part and an elbow pad part in a limited hinging manner, and the cushion part and the elbow pad part may rotate relative to the front leg part at a limited angle, respectively; and the rear leg part is provided with a backrest part in a limited hinging manner, and the backrest part may rotate relative to the rear leg part at a limited angle.