Exercise Machine Motion Mechanism with Four-Bar Linkage and Clutch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing exercise machines lack the ability to seamlessly perform combined translational and pivotal reciprocating motions in multiple directions, and do not allow for dynamic changes in motion axis or efficient stopping of motion.
Innovation Solution
An exercise machine design featuring a support structure with a first motion unit that performs combined translational and pivotal movements using a four-bar linkage, coupled with a second motion unit capable of translational or pivotal movement, driven by a power source that converts rotary motion into reciprocating motion, and incorporating a clutch system to change or stop motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a simple reciprocating motion mechanism is used, then the device complexity is reduced, but the ability to perform combined translational and pivotal motions in multiple directions is limited
Solution Approach 1:
The motion generation system is divided into separate functional units: a first motion unit for translational reciprocating motion and a second motion unit for pivotal reciprocating motion. Each unit independently generates its specific motion type, allowing complex combined motions to be achieved through composition of simpler individual motions, thus resolving the contradiction between motion versatility and mechanism complexity
Solution Approach 2:
The patent combines multiple reciprocating motion units (first motion unit for translation, second motion unit for pivotal motion) to generate complex combined motions. By merging these independent motion units, the system achieves the ability to perform combined translational and pivotal motions in multiple directions while maintaining manageable complexity through modular design
2Adaptability or versatility
If the motion axis is fixed, then the mechanism structure is simpler, but the ability to dynamically change motion axis is lost
Solution Approach 1:
The patent introduces dynamic adjustability to the motion system through a clutch mechanism that can change the connection state between the driver and motion units. This allows the motion axis and motion type to be dynamically changed during operation, transforming a static fixed-axis mechanism into a dynamic adjustable system that can adapt between different motion configurations
3Ease of operation
If continuous motion is provided, then the exercise effectiveness is maintained, but the ability to stop or change motion is lost
Solution Approach 1:
A clutch mechanism is introduced as an intermediary component between the driver and the motion units. This clutch acts as a controllable connection/disconnection device that enables the operator to start, stop, or change motion as needed, providing ease of operation while maintaining a relatively simple overall system structure through this single control element
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 the performance of complex motions like roll and pitch movements, allows for dynamic changes in motion axis, and provides efficient control over exercise motion through the use of a four-bar linkage and clutch system, enhancing user experience and exercise variety.
Implementation Method 1
the combination of the pair of linkage arms, the first main body, and the support form a four-bar linkage
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An exercise machine is provided. The exercise machine includes a support defining a longitudinal direction and a transverse direction, a first motion unit coupled to the support to provide a combined translational and pivotal movement of the first motion unit in the transverse direction, a second motion unit coupled to the first motion unit to provide one of a translational movement and a pivotal movement of the second motion unit in the longitudinal direction, and a driving source configured to impart movement to the first and second motion units.