Pull Rope Connecting Device With Rotation-Limiting Guide Slot
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Solution Overview
Problem
Existing pull rope connecting devices for fitness equipment lack convenience in adjusting the connection position between the pull rope and the pull bar, as they easily rotate during movement, making it difficult to align the plugging column with the plugging hole.
Innovation Solution
A pull rope connecting device with a guide slot and location holes on the pull bar, featuring a guide block and a positioning column that limits rotation, allowing the device to slide and automatically align with the location holes through an elastic member's action, eliminating the need for rotational adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pull rope connecting device is allowed to rotate freely during movement, then the device can be easily positioned, but the device easily rotates during movement making it difficult to align the plugging column with the plugging hole
Solution Approach 1:
The guide block transitions from a static constraint to a dynamic guiding mechanism. During movement, the guide block slides along the guide slot providing dynamic guidance that allows positioning freedom while preventing harmful rotation, resolving the contradiction between ease of positioning and alignment precision.
Solution Approach 2:
The guide slot acts as an intermediary element between the guide block and the pull bar. It mediates the movement by allowing linear sliding while constraining rotational motion, enabling the plugging column to align accurately with plugging holes without restricting the overall positioning process.
2Manufacturing precision
If the pull rope connecting device requires rotational adjustment to align with plugging holes, then alignment can be achieved, but it becomes inconvenient to adjust the connection position
Solution Approach 1:
The system transitions from requiring static rotational adjustment to dynamic sliding alignment. The guide block's movement along the guide slot dynamically guides the plugging column into alignment with plugging holes during the sliding process, eliminating the need for separate rotational adjustment operations.
Solution Approach 2:
The guide slot and guide block mechanism enables self-alignment during movement. As the pull rope connecting device slides along the guide slot, the geometry of the guide slot automatically guides the plugging column into alignment with the appropriate plugging hole without requiring user intervention for rotational adjustment.
3Adaptability or versatility
If the pull rope connecting device is designed with multiple plugging holes for position adjustment, then adaptability is improved, but the device complexity increases
Solution Approach 1:
The guide slot serves multiple functions: it guides the guide block during movement, constrains rotational motion, and provides the path for position adjustment. This multi-functionality reduces the need for separate components for each function, thereby reducing overall device complexity while maintaining adaptability.
Solution Approach 2:
The position adjustment capability is segmented into discrete plugging holes along the guide slot, allowing selective engagement at different positions. This segmentation provides adaptability for different user needs while keeping the overall structure simple through the use of a single guide slot rather than multiple complex adjustment mechanisms.
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 and quick adjustment of the connection position between the pull rope and pull bar, ensuring accurate alignment without rotational adjustment, accommodating various user shoulder widths and enhancing exercise effectiveness.
Implementation Method 1
an elastic member; the elastic member drives the rotating ring to be rotatably plugged into the location hole
Data Source
AI summary
The present disclosure relates to a pull rope connecting device and a fitness accessory. The pull rope connecting device slidably sleeves a pull bar; the pull bar is provided with a guide slot and a plurality of location holes; the pull rope connecting device is provided with a connecting part, a guide block, and a positioning column; the guide block is slidably plugged into the guide slot; the positioning column is movably arranged and can be plugged into or removed from the location holes. When the pull rope connecting device slides to an adjusted connection position, according to the cooperation between the guide block and the guide slot, an angle of the pull rope connecting device does not need to be adjusted by rotation, which makes it more convenient to align the positioning column with the corresponding location hole.