Training Device Load Transmission Mechanism for Complex Motion
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Solution Overview
Problem
Existing training devices lack the ability to apply complex movements to muscles by increasing the degree of freedom of movement of the load transmission mechanism unit, limiting the flexibility and effectiveness of muscle training.
Innovation Solution
A load transmission mechanism unit with a grip shaft portion, intermediate shaft portion, crank shaft portion, and sliding shaft portion, incorporating bevel gears and a transmission chain, allows for complex movements by converting rotation into vertical movement and enabling swingable support of the grip shaft portion, with a regulating plate to control the swing and a biasing shaft to manage tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the load transmission mechanism unit includes multiple shaft portions and transmission components, then the degree of freedom of movement is increased and complex movements can be applied to muscles, but the device complexity increases
Solution Approach 1:
The load transmission mechanism unit is divided into multiple functional segments: grip shaft portion, intermediate shaft portion, crank shaft portion, and sliding shaft portion. Each segment performs a specific function in the movement transmission chain, allowing complex movements to be achieved through coordinated operation of simpler components rather than a single complex mechanism.
Solution Approach 2:
The transmission components are nested within the housing portion, with the grip shaft portion, intermediate shaft portion, crank shaft portion, and sliding shaft portion arranged in a compact configuration. The bevel gears and transmission chain are integrated within this nested structure, reducing overall device complexity while maintaining high degree of freedom of movement.
2Adaptability or versatility
If the first end portion of the grip shaft portion is swingably supported, then complex movements can be applied to arm muscles, but the stability of the shaft support decreases
Solution Approach 1:
The first end portion of the grip shaft portion is designed with swingable support that allows dynamic movement within controlled limits. This dynamic capability enables the shaft to adapt to complex muscle movements while the support structure maintains stability through regulated swing motion rather than complete freedom of movement.
Solution Approach 2:
The swingable support is provided specifically at the first end portion of the grip shaft portion, while other portions of the shaft maintain fixed support for stability. This localized application of swingable support allows complex movements to be applied to arm muscles without compromising the overall stability of the shaft support system.
3Ease of operation
If the transmission portion is suspended between shaft portions, then smooth operation is facilitated, but the reliability of power transmission decreases
Solution Approach 1:
The transmission portion acts as an intermediary element suspended between the grip shaft portion and intermediate shaft portion. This suspended configuration allows smooth operation by accommodating movement variations, while the bevel gears and transmission chain provide reliable power transmission through controlled engagement and disengagement cycles.
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 complex muscle training by increasing the degree of freedom of movement, allowing users to train muscles with increased flexibility and reduced burden, while adjusting load magnitude and facilitating smooth operation.
Implementation Method 1
The rotation conversion portion may include an intermediate shaft bevel gear that is provided on the intermediate shaft portion, and a crank shaft bevel gear that is provided on the crank shaft portion and meshes with the intermediate shaft bevel gear
Implementation Method 2
The transmission portion may be a transmission chain, the grip shaft portion may include a grip shaft sprocket, the intermediate shaft portion may include an intermediate shaft sprocket, and the transmission chain may be suspended between the grip shaft sprocket and the intermediate shaft sprocket
Implementation Method 3
the crank shaft portion that converts the rotation of the crank shaft portion into a vertical movement of a sliding shaft portion disposed at a position parallel to the intermediate shaft portion
Data Source
AI summary
A load transmission mechanism unit for a training device includes, in a housing portion: a grip shaft portion rotatable with a grip portion connected to a first end portion thereof; an intermediate shaft portion rotatable with the rotation of the grip shaft portion; a transmission portion suspended between the grip shaft portion and the intermediate shaft portion and transmitting a mutual rotation of the grip shaft portion and the intermediate shaft portion; a rotation conversion portion provided on a crank shaft portion transmitting the rotation of the intermediate shaft portion; and the crank shaft portion converting the rotation of the crank shaft portion into a vertical movement of a sliding shaft portion. The first end portion of the grip shaft portion is swingably supported by the housing portion, and a second end portion of the grip shaft portion swings within a shaft opening portion formed in the housing portion.