Hose Coupling Device Routes Exhaust Air Away From Work Area
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Solution Overview
Problem
Conventional hose coupling devices for pneumatic hand-held tools are rigid due to their multi-media design, restricting freedom of movement and causing unwanted dust turbulence during operation.
Innovation Solution
A hose coupling device that effectively routes exhaust air away from the machine housing through a targeted exhaust air outlet, incorporating a silencer or filter to soundproof and clean the air, while allowing for flexible movement and easy operation by positioning the exhaust air outlet away from the work area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-media hose design is used to guide exhaust air, dust air, and compressed air, then the hose coupling device can handle multiple functions, but the device becomes relatively rigid and freedom of movement is restricted
Solution Approach 1:
The patent separates the exhaust air guidance function from the multi-media hose structure. Instead of routing all air flows through concentric hoses, the exhaust air is guided separately through the machine housing to an exhaust air outlet on the housing, while the hose only handles compressed air and dust air. This segmentation makes the hose flexible and easy to move while maintaining multi-functionality through the integrated housing guidance system.
2Adaptability or versatility
If the hose coupling device is designed with concentric hoses for compressed air, exhaust air, and dust removal, then all air flows can be managed, but unwanted dust turbulence occurs in the work area
Solution Approach 1:
The patent extracts the exhaust air flow path from the hose assembly and routes it separately through the machine housing. The exhaust air outlet is positioned on the housing away from the work area, removing the source of dust turbulence from the immediate work zone. This allows the hose to focus only on delivering compressed air and removing dust air, eliminating the turbulence problem while maintaining comprehensive air flow management.
3Ease of operation
If the machine connection is arranged in the handle area, then the tool is compact and easy to hold, but exhaust air flows near the work area causing dust turbulence
Solution Approach 1:
The patent resolves the spatial conflict by utilizing the machine housing as a three-dimensional conduit for exhaust air. Instead of having the exhaust air outlet compete for space in the handle area, the exhaust air is routed through the housing volume to an outlet positioned on the housing exterior, away from the work area. This dimensional redistribution allows the handle area to remain compact and ergonomic while the exhaust air exits from a different location in space.
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
Enhances operational ease and reduces dust turbulence by directing exhaust air away from the work area, improving the usability and efficiency of hand-held power tools like grinders and polishers.
Implementation Method 1
The hose coupling device preferably has a silencer or a filter (or both) through which the exhaust air flows out of the coupling housing... so that in any case the exhaust air flowing out of the hose coupling device or its coupling housing is soundproofed
Implementation Method 2
A filter can be used, for example, to separate oil from the exhaust air
Data Source
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AI summary
The hose coupling device has a hose coupling unit (50a) comprising a coupling housing (60a) in which a retaining unit (51) is provided. The retaining unit is provided to retain a counter-holding unit of the machine terminal such that a compressed air line of hose is in communication with a machine compressed-air inlet of machine terminal of pneumatic hand-held machine tool. An exhaust port and an exhaust air inlet are provided in an exhaust passage that is in communication with an engine exhaust outlet when the hose coupling unit is connected to the machine terminal. An independent claim is included for pneumatic hand-held machine tool.