Automatic Dumbbell Weight Adjustment via Motorized Actuation
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Solution Overview
Problem
Current dumbbell weight adjustment systems require user intervention, forcing interruptions during workouts to manually load or unload weights, which disrupts the flow of strength training exercises.
Innovation Solution
An automatic weight adjustment system featuring a supporting frame with a rotating handgrip and locking mechanisms, actuated by a motor and worm screw, allowing remote control via a logic control unit and wireless device for seamless weight selection and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual weight adjustment systems are used, then device complexity is reduced, but user intervention is required causing workout interruptions
Solution Approach 1:
The system enables automatic weight adjustment through a motorized actuating device that operates without continuous user intervention. The microprocessor control unit receives signals from remote devices and automatically actuates the motor to lock or unlock weights, allowing the system to serve itself by autonomously adjusting weights based on pre-programmed exercise protocols or user selections.
Solution Approach 2:
The patent replaces manual mechanical weight adjustment with an automated electromechanical system. A motor converts electrical energy to mechanical rotation, which through a worm screw and gear mechanism translates to linear motion for locking/unlocking weights. This substitution eliminates the need for manual manipulation of weight plates while maintaining mechanical reliability through self-locking worm gear properties.
2Productivity
If manual weight adjustment is required, then device complexity is minimized, but productivity during workouts decreases due to interruptions
Solution Approach 1:
The system maintains continuous workout action by enabling seamless weight transitions during exercise routines. The automatic actuating device allows weight changes without requiring the user to stop or manually intervene, ensuring the useful action of strength training continues uninterrupted. The control system manages weight adjustments in the background while the user maintains their exercise form and rhythm.
Solution Approach 2:
The patent introduces a microprocessor control unit and remote communication devices as intermediaries between the user and the weight adjustment mechanism. These intermediaries handle the complexity of automation, receiving exercise parameters from the user via smartphone or other remote devices, processing the information, and automatically executing weight changes through the motor system, thereby shielding the user from operational complexity.
3Ease of operation
If automatic actuation is implemented, then ease of operation improves for remote adjustment, but device complexity increases due to additional components
Solution Approach 1:
The control system is designed with multi-functionality to handle various operation modes through a unified interface. The microprocessor control unit can execute pre-programmed exercise protocols, respond to real-time remote device signals, and manage multiple weights simultaneously. This universal control approach consolidates multiple functions into a single intelligent component, reducing the need for separate specialized mechanisms for each operation type.
Solution Approach 2:
The patent extracts the complexity of weight adjustment logic from the mechanical system and places it in the digital control domain. The microprocessor and remote communication devices handle all decision-making and coordination, while the mechanical actuating mechanism is simplified to perform only the basic function of converting electrical signals to mechanical locking/unlocking actions. This separation allows ease of operation through software interfaces while containing mechanical complexity in dedicated actuators.
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 continuous exercise without interruptions, allowing users to remotely and efficiently adjust dumbbell weights, enhancing the convenience and reliability of strength training sessions.
Implementation Method 1
at least one actuating device, arranged on said supporting frame, configured for causing the rotation of said handgrip around said axis
Implementation Method 2
said at least one dumbbell may comprise a gear fixed to said first end or to said second end, capable of engaging with said at least one actuating device
Implementation Method 3
each weight can be locked individually at said first end by means of first locking means, when said handgrip rotates towards a locking position
Data Source
AI summary
The present invention relates to a system (S; S′) for adjusting the weight of a dumbbell, that can be used by a user for carrying out a gymnastic exercise, comprising:a supporting frame (1);at least one dumbbell (2; 3), housed on said supporting frame (1), provided witha handgrip (21; 31), having an axial development along an axis (R), capable of rotating around said axis (R) and provided with a first end (211; 311) and a second end (212; 312),a first plurality of weights (P1; P3), arranged on said supporting frame (1), wherein each weight can be locked individually at said first end (211; 311) by means of first locking means (214; 314), when said handgrip (21; 31) rotates towards a locking position, and can be unlocked from said first end (211; 311), when said handgrip (21; 31) rotates towards an unlocking position,a second plurality of weights (P2; P4), arranged on said supporting frame (1), wherein each weight can be locked individually at said second end (212; 312) by means of second locking means (215; 315), when said handgrip (21; 31) rotates towards a locking position, and can be unlocked from said second end (212; 312), when said handgrip (21; 31) rotates towards an unlocking position,said system (S) being characterized in thatit comprises at least one actuating device (4-4′; 5-5′), arranged on said supporting frame (1), configured for causing the rotation of said handgrip (21; 31) around said axis (R), from said locking position towards said unlocking position and vice versa, so as to select the weight to be locked to or to be unlocked from said handgrip (21; 31) for carrying out the gymnastic exercise.


