Pneumatic Hand Tool Adjustable Joint for Air Flow Reliability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional pneumatic hand tools with fixed tool head designs face difficulties in diverse environments due to limited adjustable operating angles, leading to inefficiencies and reduced tool life from complex high-pressure air flow channels and frequent bending.

Innovation Solution

A pneumatic hand tool with a joint portion structure allowing 360-degree rotation and adjustable operating angles, featuring interconnected rotary joint faces with inclined ports and airtight components for smooth high-pressure air flow and extended tool life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a pivot structure with ears and pivotal axis is used to enable tool head rotation, then the operating angle can be adjusted, but the high pressure air flow channel becomes over-curved and complicated, reducing the life cycle of the pivot structure

Engineering Contradiction:

Improveadjustable operating angleVSAvoidlife cycle of pivot structure

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The joint portion is divided into first and second rotary joint faces with respective ports, allowing the high pressure air flow channel to be segmented into simpler paths that connect the ports directly without requiring complex curved channels through the pivot structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rotary joint faces act as intermediaries that maintain air tightness while allowing rotation, with the ports positioned to provide direct connection paths for high pressure air flow, eliminating the need for over-curved channels

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a universal joint with soft tube is used to guide high pressure air, then the tool head can be rotated to required operating angle, but the soft tube experiences frequent bending and concentration of high pressure air, affecting its life cycle

Engineering Contradiction:

Improveadjustable operating angleVSAvoidlife cycle of soft tube

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent uses rigid rotary joint faces with ports instead of flexible soft tubes, maintaining air tightness through the rigid structure while allowing rotation, thereby eliminating the frequent bending and stress concentration that affect soft tube life cycle

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The air flow path is segmented into distinct sections with ports positioned on the rotary joint faces, creating simpler, less curved flow channels that reduce stress concentration and extend component life

Inventive Principle:

Principle #1Segmentation

3Device complexity

If the tool head is fixed together with the grip to form an integral body, then the structure is simple, but the operating angle is fixed and cannot be adjusted for diverse environments

Engineering Contradiction:

Improveintegral designVSAvoidfixed operating angle

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The joint portion is designed with rotary joint faces that enable dynamic adjustment of the tool head angle relative to the grip, transforming the fixed integral structure into an adjustable configuration that adapts to diverse operating environments

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11801588B2Pneumatic hand tool with adjustable operating angle

Publication Date: 2023.10.31 DE POAN PNEUMATIC CORP

AI summary

The present invention provides a pneumatic hand tool with adjustable operating angle, comprising a grip body and a tool head body interconnected with each other. The grip body has a grip flow channel, and said tool head body has a tool head flow channel. The grip body and said tool head body are interconnected through two rotary joint faces to form a joint portion capable of adjustment of the operating angle. The two rotary joint faces respectively have connecting areas for uniform circumferential motion and high pressure air ports configured along the rotation center. And the two rotary joint faces are inclined to facilitate adjustment of the operating angle of said tool head, and to ensure good air tightness of the high pressure air ports inside the joint portion.