Rotatable Pressure Gauge Mounting for Stable Air Inflation Assembly

Solution Overview

Problem

Conventional air inflation devices face issues with the positioning and stability of the pressure gauge, which tends to loosen over time due to its threaded connection, affecting accuracy and durability.

Innovation Solution

The air inflation device features a rotatably mounted pressure gauge with a shaft inserted into an air outlet channel, where the shaft has an annular groove engaging a manifold, ensuring stable positioning and preventing detachment, while allowing adjustable angle settings through inclined surfaces for improved usability and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the pressure gauge is threadedly connected to the bottom seat, then the pressure gauge can be rotated to change its angle, but the positioning cannot be ensured and the pressure gauge is prone to loosen under long term use

Engineering Contradiction:

Improveadjustability of pressure gauge angleVSAvoidstability of pressure gauge connection

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The pressure gauge unit is designed to be rotatably mounted on the inflation unit, allowing dynamic adjustment of the gauge angle during operation. The shaft can rotate within the air outlet channel to achieve different viewing angles, providing operational flexibility while maintaining connection stability through the annular groove engagement mechanism.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The annular groove on the shaft acts as an intermediary engagement feature with the manifold. This groove-manifold interface serves as a mediator that maintains stable positioning and prevents loosening, while still allowing rotational adjustment. The engagement feature transmits both the stabilizing function and the rotational capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If the pressure gauge is threadedly connected to the bottom seat, then the pressure gauge can be installed easily, but the positioning accuracy deteriorates over time due to loosening

Engineering Contradiction:

Improveease of pressure gauge installationVSAvoidpositioning accuracy of pressure gauge

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The pressure gauge unit is designed to be rotatably mounted on the inflation unit, allowing dynamic adjustment of the gauge angle during operation. The shaft can rotate within the air outlet channel to achieve different viewing angles, providing operational flexibility while maintaining connection stability through the annular groove engagement mechanism.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The annular groove on the shaft acts as an intermediary engagement feature with the manifold. This groove-manifold interface serves as a mediator that maintains stable positioning and prevents loosening, while still allowing rotational adjustment. The engagement feature transmits both the stabilizing function and the rotational capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11885423B2Air inflation device having rotatable pressure gauge

Publication Date: 2024.01.30 BETO ENG & MARKETING

AI summary

An air inflation device includes an inflation unit having an air outlet channel extending along a first axis, and an insertion channel extending along a second axis transverse to the first axis and partially communicating with the air outlet channel. A pressure gauge unit is rotatably mounted on the inflation unit and includes a pressure gauge, and a shaft extending outwardly from the pressure gauge and inserted into the air outlet channel. The shaft has an annular groove formed in an outer peripheral surface thereof and corresponding to and communicating with the insertion channel. An air guide unit includes a manifold inserted into the insertion channel and engaging the annular groove.