Pull-type shift transmission system and food processor
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Solution Overview
Problem
Existing pull type transmission systems in food processors lack the ability to conveniently adjust the transmission ratio in real-time, requiring users to stop and reconfigure the gear structure, which disrupts continuous operation.
Innovation Solution
A non-electric pull type transmission system featuring a coaxial column with rotary discs of different diameters, a rope tying position, and a resilience mechanism, allowing for easy gear switching through simple up-down pulling actions without interrupting operation, utilizing a guide structure and control module to manage the pull rope effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transmission ratio is changed by adjusting gears through a shift lever in existing pull type transmission systems, then the transmission ratio can be changed, but the operation must be stopped and the structure reconfigured, causing loss of time and disrupting continuous operation
Solution Approach 1:
The patent applies the dynamics principle by making the pull rope's winding position dynamic rather than fixed. The pull rope can be continuously repositioned between different rotary discs with different diameters during operation, allowing real-time transmission ratio adjustment without stopping the food processing. This dynamic repositioning mechanism resolves the contradiction by enabling adaptability while maintaining continuous operation.
Solution Approach 2:
The patent uses the pull rope as an intermediary element that can be relocated between different rotary discs. By pulling the rope to different positions on the coaxial column, users can change which rotary disc the rope winds around, thereby changing the transmission ratio. This intermediary mechanism allows smooth transition between different transmission ratios without structural reconfiguration or operation interruption.
2Adaptability or versatility
If the pull rope is wound around rotary discs with different diameters to change transmission ratio, then torque and speed can be adjusted, but the mechanism becomes more complex requiring additional control structures
Solution Approach 1:
The patent applies the self-service principle by designing a system where the user directly controls the transmission ratio adjustment through simple manual pulling actions. The user pulls the pull rope to reposition it on different rotary discs, and the system automatically achieves the desired transmission ratio change without requiring complex control mechanisms, sensors, or automated systems. This keeps the device complexity low while maintaining high adaptability.
3Device complexity
If a single round block or coaxial round blocks are used in pull type transmission systems, then the structure is simple, but the output transmission ratio cannot be adjusted conveniently at any time
Solution Approach 1:
The patent applies segmentation by dividing the single round block into multiple rotary discs with different diameters arranged coaxially. Each rotary disc represents a segment with a different transmission ratio characteristic. The pull rope can be wound around any of these segmented discs, allowing the system to maintain simple overall structure while enabling real-time transmission ratio adjustment through selective winding positions.
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 continuous operation by allowing users to change the rotating gear without shutting down the equipment, enhancing usability by providing adjustable torque and speed without interrupting the processing action.
Implementation Method 1
the pull mechanism is connected to a resilience mechanism providing a resilience force and is used for retracting the pull rope after the pull rope is pulled out
Data Source
AI summary
The invention relates to a pull type transmission system, which comprises a pull mechanism. The pull mechanism at least comprises a coaxial column, the coaxial column is formed by connecting rotary discs with different diameters, and planes connecting the rotary discs with different diameters are connecting faces. The pull mechanism is provided with a rope tying position, the rope tying position is arranged on a side face of the pull mechanism, and the pull rope is connected to the pull mechanism through the rope tying position at one end and is wound around the rotary discs. The pull mechanism is connected to a resilience mechanism and is used for retracting the pull rope after the pull rope is pulled out. The invention provides a non-electric pull type transmission system. The corresponding rotating gears can be changed through simple up-down pulling actions without having to shut down and replace equipment or interrupt the pulling operation, making the use more convenient.