Vehicle Seat Pump Clutch Brake Drum Stability
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Solution Overview
Problem
Existing seat pumping devices for vehicles experience undesirable movement of internal components due to external forces, leading to operational inconvenience and potential damage when excessive forces are applied, causing components to deviate from their intended operating range.
Innovation Solution
The introduction of a seat pumping device with a clutch drum and brake drum configuration, featuring compressing and supporting protrusions, and securing portions that guide relative turning while blocking translation, minimizing clearance and concentrating excessive forces to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the clutch drum and brake drum are coupled without securing portions, then the device structure is simpler, but undesirable movement and clearance occur due to external forces
Solution Approach 1:
The coupling interface between the clutch drum and brake drum is segmented into multiple securing portions distributed around the circumference. This segmentation allows the system to maintain simplicity while effectively restraining movement in multiple directions through distributed contact points.
Solution Approach 2:
The securing portions act as intermediary elements between the clutch drum and brake drum, providing a controlled interface that transmits torque while preventing undesirable movement. These securing portions mediate the interaction between the two drums, allowing rotation while blocking translation.
2Stability of the object's composition
If securing portions are added to guide relative turning and block translation, then component stability improves, but device complexity increases
Solution Approach 1:
The securing portions are merged into the existing drum structures, with protrusions and recesses formed as integral parts of the clutch drum and brake drum. This merging approach provides stabilization functionality without requiring separate additional components, thus limiting the increase in device complexity.
3Ease of manufacture
If the drums are freely coupled, then ease of manufacture is improved, but manufacturing precision requirements increase to prevent unwanted movement
Solution Approach 1:
The securing portions are pre-formed as integral features of the clutch drum and brake drum during manufacturing. This preliminary action ensures that the coupling interface is already configured to prevent unwanted movement, eliminating the need for post-assembly adjustments and reducing the impact of manufacturing tolerances.
Data Source
AI summary
Disclosed is a seat pumping device for a vehicle, the seat pumping device including: a clutch drum turned by receiving torque of a lever and having a plurality of compressing protrusions radially formed along an edge thereof to be spaced apart from each other; a brake drum coupled to the clutch drum and having a circular vertical flange protruding toward the clutch drum, the vertical flange having a plurality of supporting protrusions protruding laterally of the vertical flange to be arranged between the compressing protrusions; and a securing portion provided between the vertical flange and the clutch drum which face each other, the securing portion guiding a relative turning of the clutch drum and the brake drum while blocking a relative translation of the clutch drum and the brake drum.