Motorized Counterweight Strength Machine for Stable Folding
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Solution Overview
Problem
Conventional strength training machines with folding mechanisms experience counterweight block shaking during folding, making the operation inconvenient.
Innovation Solution
A strength training machine with a bracket and pulling assembly, featuring a counterweight device and handle assembly, allows for single-handed folding by utilizing a resistance adjusting assembly and drive wheel to stabilize the counterweight, and includes sliding assemblies for stable movement on a support surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional strength training machines use counterweight blocks connected by a rotating shaft for folding, then the machine can be folded for storage, but the counterweight blocks shake during folding making the operation inconvenient
Solution Approach 1:
The patent uses a motor to generate an opposing force that counteracts the weight of the bracket, enabling easy lifting and folding. The motor acts as an active counterweight mechanism that provides the necessary force to overcome gravity during the folding operation, eliminating the need for manual effort and stabilizing the counterweight blocks during the process.
Solution Approach 2:
The patent replaces the conventional mechanical rotating shaft connection with a motor-driven system. The motor substitutes for the pure mechanical linkage, providing controlled force generation through electrical means rather than relying solely on mechanical advantage and manual operation. This substitution eliminates the shaking issue by providing controlled, stable force application.
2Ease of operation
If the bracket is lifted from inclined state to upright state, then the machine returns to operational position, but significant manual effort is required against gravity
Solution Approach 1:
The motor provides an opposing force that counteracts the gravitational force acting on the bracket. During the lifting operation from inclined to upright position, the motor generates sufficient force to balance and overcome the weight of the bracket, significantly reducing the manual effort required from the user.
Solution Approach 2:
The motor-driven system enables the bracket to be positioned with minimal human intervention. Once the motor is activated, it autonomously provides the necessary force for lifting and positioning the bracket, making the system self-sufficient for the heavy lifting task rather than relying entirely on manual strength.
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 convenient, stable folding and unfolding of the strength training machine without shaking, facilitated by the counterweight mechanism and sliding assemblies, allowing for easy storage and operation with minimal effort.
Implementation Method 1
the pulling piece is coiled around a wheel surface of the drive wheel while generating a counterweight pulling force
Implementation Method 2
The sliding assembly is in contact with the support surface to assist movement of the bracket when the bracket is in the second state
Data Source
AI summary
A strength training machine/apparatus is provided. The strength training machine includes a bracket having a housing. A pair of pulling assemblies is arranged in the housing, each including a counterweight device having a motor, configured to simulate a counterweight, and a drive wheel coupled to the motor and driven by the motor to rotate. Each pulling assembly also includes a pulling element having a first end capable of being held by a user, and a second end attached to the drive wheel. The pulling element is wound around a wheel surface of the drive wheel when the drive wheel is rotated. The counterweight of each motor of the pair of pulling assemblies is separately adjustable.