Extendable Arm Assembly for Automatic Weight Support
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Solution Overview
Problem
Users of strength training systems with free weights, such as dumbbells and barbells, face the inconvenience of having to manually reposition and retrieve weights during exercises, requiring space and assistance.
Innovation Solution
A support system with extendable arm assemblies that automatically retract when weights are removed, allowing users to perform exercises without moving away from the system or needing assistance, with the arms adjusting to accommodate different exercises and user needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users manually reposition and retrieve weights during exercises, then the system structure can be simple, but the ease of operation deteriorates and space requirements increase
Solution Approach 1:
The arm assembly automatically extends and retracts without requiring user intervention. When the weight is placed on the cradle, the arm automatically extends to the exercise position. When the weight is removed, the arm automatically retracts, eliminating the need for manual repositioning operations.
Solution Approach 2:
The arm assembly transitions from a static structure to a dynamic one that can automatically change position. The arm pivots between a retracted position (when weight is on the cradle) and an extended position (when weight is removed), adapting its state based on the exercise requirement.
2Ease of operation
If the arm assembly automatically extends and retracts, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The arm assembly automatically extends and retracts without requiring user intervention. When the weight is placed on the cradle, the arm automatically extends to the exercise position. When the weight is removed, the arm automatically retracts, eliminating the need for manual repositioning operations.
Solution Approach 2:
The arm assembly transitions from a static structure to a dynamic one that can automatically change position. The arm pivots between a retracted position (when weight is on the cradle) and an extended position (when weight is removed), adapting its state based on the exercise requirement.
3Area of stationary object
If the cradle is positioned close to the support frame, then the device occupies less space, but the accessibility of the weight during exercise deteriorates
Solution Approach 1:
The arm assembly transitions from a static structure to a dynamic one that can automatically change position. The arm pivots between a retracted position (when weight is on the cradle) and an extended position (when weight is removed), adapting its state based on the exercise requirement.
Solution Approach 2:
The system resolves the space-accessibility contradiction by moving the cradle along the vertical dimension rather than horizontal space. The cradle can be positioned close to the support frame (saving horizontal space) while the arm extends vertically to deliver the weight to the user at the appropriate height and distance during exercise.
4Ease of operation
If the arm assembly remains in extended position, then the weight is always accessible, but the space occupied by the system increases
Solution Approach 1:
The arm assembly transitions from a static structure to a dynamic one that can automatically change position. The arm pivots between a retracted position (when weight is on the cradle) and an extended position (when weight is removed), adapting its state based on the exercise requirement.
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
Enables users to perform exercises efficiently by keeping the weights within reach, reducing space requirements and eliminating the need for assistance, while accommodating various exercises and user configurations.
Implementation Method 1
a spring assembly coupled to and between the base and the second end of the second hinge arm
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The present disclosure generally pertains to barbell and dumbbell support systems that allow for a user to perform exercises without requiring movement of the body of the user from the proximity of weight support assemblies when weights are in use. Weight support systems include extendable arm assemblies for the holding and positioning of barbells or dumbbells in a location conducive to performing exercises. Extendable arm assemblies automatically retract when a user removes the barbell or dumbbells from the assemblies, allowing the user to perform the intended exercise without moving away from the system. The retracted position of the extendable arm assemblies allows the user to replace the weights without the assistance of others at the conclusion of the exercise.