High-Pressure Cleaner Drive Assembly With Separated Oil Housing
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Solution Overview
Problem
Existing drive devices for high-pressure cleaning appliances have limitations in terms of service life and material selection, which affect their thermal properties and assembly efficiency.
Innovation Solution
The motor flange and oil housing are designed as separate components, allowing for different material pairings and a positive-locking connection, with centering features to simplify assembly and enhance mechanical strength, while enabling the adaptation of thermal properties to various performance classes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the motor flange and oil housing are integrated as a single component, then the assembly is simpler, but the material selection is limited and thermal properties cannot be optimized for different performance classes
Solution Approach 1:
The motor flange and oil housing are divided into separate components, allowing independent material selection and optimization. The motor flange can be made from materials optimized for mechanical strength and thermal conductivity, while the oil housing can use materials optimized for thermal management and durability, enabling adaptation to different performance classes without compromising assembly simplicity through standardized connection interfaces
2Reliability
If the motor flange and oil housing are made from the same material, then manufacturing is simpler, but the service life is reduced due to incompatible material properties
Solution Approach 1:
By segmenting the motor flange and oil housing into separate components, the invention enables the use of different materials optimized for their specific functional requirements. The motor flange can use materials with high mechanical strength and thermal conductivity, while the oil housing can use materials with superior thermal management properties, thereby extending service life through material compatibility rather than limiting manufacturing to single-material production
3Temperature
If the oil housing is made from a material with different thermal properties, then thermal management is improved, but the assembly complexity increases
Solution Approach 1:
The oil housing is segmented as a separate component that can be manufactured from materials specifically selected for optimal thermal management properties. This segmentation allows the use of materials with different thermal conductivities, specific heats, and expansion coefficients to match the thermal requirements of different performance classes, while the standardized connection interface to the motor flange prevents excessive assembly complexity
4Ease of operation
If the motor flange forms a centering for the oil housing, then assembly is simplified, but the manufacturing precision requirements increase
Solution Approach 1:
The motor flange is designed with integrated centering features (such as centering pins or precision bore) that guide the oil housing into correct alignment during assembly. This segmentation approach simplifies the assembly process by providing built-in alignment references, while the centering features are manufactured with high precision to ensure accurate positioning and minimal runout, balancing assembly simplicity with manufacturing precision requirements
Data Source
AI summary
A drive device for a high pressure cleaning appliance includes a motor, the motor shaft of which is rotatably mounted on a motor flange and is coupled to a swash plate arrangement by a planetary gearing, wherein the planetary gearing comprises a sun gear, which is connected to the motor shaft in a rotationally-fixed manner and meshes with planetary gears that are rotatably mounted on a planet carrier and are in engagement with an internally toothed ring gear, and wherein the swash plate arrangement is positioned in an oil housing. So that the drive device has a longer service life and enables a greater selection of materials in the production thereof, the motor flange and the oil housing form separate components, wherein the motor flange comprises the ring gear and the oil housing is fixed to the motor flange, wherein the motor flange forms a centering for the oil housing.