Air Valve Joint With Reverse Driving Locking Blocks
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Solution Overview
Problem
Conventional air valve joints are cumbersome and inefficient for high-pressure air filling and removal, requiring complex operations and often failing to securely engage at high pressures.
Innovation Solution
A joint design featuring a body with locking blocks, a controller, and resilient elements, allowing a tooth to move along a reverse driving path to securely engage with air valve threads using one-hand operation, ensuring secure connection and easy removal under high pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fixing device is rotated tightly with a rubber ring to retain the air valve, then the connection is simple, but the rubber ring removes easily when filling air at high pressure
Solution Approach 1:
The locking mechanism is divided into multiple locking blocks (typically three), each with independent teeth that engage with the air valve threads. This segmentation distributes the locking force across multiple points, preventing any single point from failing under high pressure while maintaining simple operation.
Solution Approach 2:
The locking blocks feature curved reverse driving travel paths with arcuate teeth that engage with the air valve threads. The curved geometry allows the locking blocks to follow a rotational path during engagement, creating a self-locking mechanism that securely retains the air valve under high pressure without requiring tight rotation.
2Reliability
If the joint contains female threads and the air valve has male threads for screwing connection, then the connection is secure, but the screwing manner is slow and inconvenient
Solution Approach 1:
Instead of screwing the air valve into the joint threads, the locking blocks rotate in the opposite direction along a reverse driving travel path, causing the teeth to engage with the air valve threads from the outside inward. This inverted engagement mechanism dramatically reduces connection time while maintaining secure locking.
Solution Approach 2:
The locking blocks are pre-positioned in the outlet segment with their teeth oriented to engage the air valve threads. When the air valve is inserted, the locking blocks automatically follow the reverse driving path and engage the threads, eliminating the need for manual screwing operations.
3Reliability
If the joint contains threads that screw with the air valve when pressed, then the connection is secure, but the operation requires two hands and is complicated
Solution Approach 1:
The locking blocks are designed to automatically engage with the air valve threads through their own reverse driving motion when the air valve is inserted. The resilient elements provide the necessary force for engagement without requiring user manipulation, enabling one-handed operation while maintaining secure connection.
Solution Approach 2:
The locking blocks are made movable relative to the outlet segment, allowing them to dynamically follow the reverse driving travel path during engagement. This dynamic movement enables the locking mechanism to adapt to the insertion motion, simplifying operation to a single insertion action rather than requiring separate pressing and locking steps.
4Reliability
If the tooth moves along a reverse driving path to engage with air valve threads, then the connection is secure at high pressure, but the structure becomes more complex
Solution Approach 1:
The locking blocks combine multiple functions into a single component: they provide sealing against the air valve, engage the threads through reverse driving motion, and lock the connection under high pressure. This merging reduces the need for separate sealing elements and locking mechanisms, actually simplifying the overall structure despite the sophisticated engagement path.
Solution Approach 2:
The locking blocks serve multiple purposes: they seal the connection, engage the air valve threads through rotational motion, provide locking force under high pressure, and enable one-handed operation. This multi-functionality eliminates the need for separate components for each function, reducing overall structural complexity.
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 efficient high-pressure air filling and easy one-handed operation for connecting and disconnecting, with a flat outlet segment accommodating various tire sizes, enhancing user convenience and operational efficiency.
Implementation Method 1
at least one resilient element arranged in the body and urging the tooth to move to the first position; When controlling the driving portion, each of the at least one resilient element is pressed so that the tooth moves to the second position along the reverse driving travel
Data Source
AI summary
A joint contains: a body, at least one locking block, at least one controller, and at least one resilient element. The body has an inlet segment, an outlet segment, and an air channel. The outlet segment has a connection orifice. Each locking block has a tooth and a driving portion. The tooth is controlled to move between a first position and a second position. Between the first position and the second position is defined a reverse driving travel path obliquely extending to the inlet segment. Each locking block also has a coupling shaft. The reverse driving travel path is arcuate, and the driving portion and the coupling shaft are on opposite sides of the tooth. Each resilient element urges the tooth to move to the first position and is pressed so that the tooth moves to the second position along the reverse driving travel path.