Trigger-Lock Pumphead for One-Handed Dual-Valve Inflation
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Solution Overview
Problem
Existing bicycle pumpheads are bulky, inconvenient to use, require two hands for operation, and often struggle to adapt to both Schrader and Presta valves without internal component adjustments.
Innovation Solution
A compact, single-handed pumphead with a trigger-style lock arm that securely engages both Schrader and Presta valves, allowing easy attachment and detachment without internal component changes, featuring a pivoting lock arm and ergonomic design for improved leverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional lever lock pumpheads are used, then the pumphead can be secured to the valve, but two hands are required for operation and the lever may interfere with small-diameter wheels
Solution Approach 1:
The lock arm is repositioned from traditional rear or top locations to the side of the pumphead, changing the spatial dimension of operation. This side-mounted positioning eliminates interference with small-diameter wheels while maintaining secure locking capability through a different geometric arrangement.
Solution Approach 2:
The pumphead design allows one-handed operation where the same hand that positions the pumphead can also operate the lock arm. The trigger-style lock arm provides intuitive self-service operation without requiring a second hand to stabilize the pumphead during locking.
2Adaptability or versatility
If interchangeable parts or separate ports are used for different valve types, then compatibility with multiple valves is achieved, but the pumphead becomes large and bulky
Solution Approach 1:
A single integrated pumphead design incorporates universal valve compatibility through a unified locking mechanism that adapts to both Schrader and Presta valves. The internal components are designed to accommodate different valve types without requiring interchangeable parts or separate ports, eliminating the need for bulky multi-configuration structures.
Solution Approach 2:
The pumphead merges multiple valve compatibility functions into a single integrated structure. Rather than providing separate ports or interchangeable components for different valve types, the design combines universal sealing and locking capabilities into one compact configuration that handles both valve types effectively.
3Adaptability or versatility
If internal components are manipulated to change valve head configuration, then adaptability to different valves is achieved, but user convenience is reduced
Solution Approach 1:
The pumphead automatically adapts to different valve types through its internal component design without requiring user manipulation. The internal sealing elements and locking mechanisms are configured to self-adjust based on the valve type being used, eliminating the need for users to change internal components or configurations.
Solution Approach 2:
The internal components are designed with dynamic adaptability, allowing them to automatically adjust their configuration based on the inserted valve type. This dynamic response occurs during the normal locking operation, providing seamless adaptation between Schrader and Presta valves without user intervention.
4Reliability
If levers are positioned at the rear or top of the pumphead, then locking capability is achieved, but clearance is insufficient for small-diameter wheels
Solution Approach 1:
The lock arm is repositioned from rear or top locations to the side of the pumphead, utilizing a different spatial dimension for the locking action. This side-mounted configuration provides adequate clearance for small-diameter wheels while maintaining reliable locking capability through an alternative geometric arrangement.
Solution Approach 2:
The pumphead design employs asymmetric lever positioning, placing the lock arm offset to the side rather than symmetrically at the rear or top. This asymmetric arrangement optimizes clearance for various wheel sizes while preserving effective locking through strategic placement of the lock arm relative to the valve access point.
Data Source
AI summary
A pumphead comprises a housing having a first end defining an aperture configured to receive a valve head therein; a handle housing defining an air passage in fluid connection with the aperture and an air pump; and a lock arm comprising an end pivotally coupled to the pumphead housing at the end of the pumphead housing opposite the aperture; and a second end disposed between the handle housing and the first end of the pumphead housing. Pivoting the lock arm toward the handle housing locks the pumphead housing around the valve head when the valve head is received in the aperture.