Nested Spray Nozzle Layout for Compact Vehicle Washer Packaging
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Solution Overview
Problem
The limited housing space inside vehicle bodies or behind bumpers necessitates a reduction in the overall length of vehicle washing devices, as conventional designs are often too long due to the protrusion of spray nozzles.
Innovation Solution
A vehicle washing device configuration featuring a cylinder with a piston that houses a spray nozzle, where the piston is slidably inserted into the cylinder and extends to protrude the nozzle, utilizing a spring mechanism to reduce the overall length by allowing the nozzle to be housed more efficiently when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spray nozzle is mounted to protrude from the cylinder tube, then the washing function is improved, but the overall length of the device increases
Solution Approach 1:
The spray nozzle is nested within the piston tube structure, where the outer circumference of the spray nozzle is fitted on the inner circumference of the piston tube. This nesting arrangement allows the spray nozzle to be integrated into the existing cylindrical structure, reducing the overall length while maintaining the washing function.
Solution Approach 2:
The spray nozzle is oriented to spray in a direction that is not strictly along the axial extension of the piston tube, but rather utilizes a dimensional arrangement where the nozzle is mounted at the leading end and sprays toward the object-to-be-washed. This spatial arrangement optimizes the washing function while minimizing the protrusion length.
2Reliability
If the spray nozzle protrudes further to improve washing coverage, then the washing effectiveness is improved, but the device becomes harder to integrate into limited housing spaces
Solution Approach 1:
The spray nozzle is nested within the piston tube, with its outer circumference fitted on the inner circumference of the piston tube. This nesting allows the nozzle to be compact while still providing effective washing coverage, making the device adaptable to limited housing spaces inside vehicle bodies or behind bumpers.
Solution Approach 2:
The piston tube structure serves multiple functions: it acts as both the moving component of the washing device and the housing for the spray nozzle. This multi-functionality reduces the need for additional housing structures, improving adaptability to various installation spaces while maintaining washing effectiveness.
Data Source
AI summary
A vehicle washing device includes: a cylinder including a cylinder tube to which a washing fluid is supplied; a piston including a piston tube that is movably inserted into the cylinder tube and opens at both ends; and a spray nozzle that is mounted at a leading end, in an extension direction, of the piston tube protruding from the cylinder tube. The spray nozzle is configured to spray the washing fluid, supplied through the inside of the piston tube, toward an object-to-be-washed. The outer circumference of the spray nozzle is fitted on the inner circumference of the piston tube.