Oil Filter Housing Segmentation and Anti-Rotation Design
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Solution Overview
Problem
Conventional oil filter housings are not detachable, leading to frequent disposal and potential oil leakage during replacement, with poor operability and high waste generation.
Innovation Solution
A separate oil filter housing design featuring detachable upper and lower bowls made of non-metal materials, with a ring-shaped protrusion for secure engagement with the engine base, preventing rotation and ensuring sealing, and elastic hooks for easy filter element mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the oil filter housing uses an integral steel-made body that is not detachable, then the housing is strong and durable, but the housing and filter element must be discarded together resulting in waste
Solution Approach 1:
The oil filter housing is divided into separate components: an upper bowl, a lower bowl, and a filter element. The upper and lower bowls are detachably coupled together, allowing the filter element to be replaced independently while reusing the housing bowls, thus reducing waste while maintaining structural integrity through the threaded coupling mechanism
2Ease of operation
If the lower cover of the housing is coupled to the engine body by a nut, then the housing can be detached, but the housing may rotate relative to the engine body causing oil leakage
Solution Approach 1:
A protruding structure is provided on the outer top end surface of the upper bowl that engages with a corresponding recess in the filter-mounting base. This asymmetric feature prevents rotation of the upper bowl relative to the engine body, ensuring proper alignment and sealing performance while maintaining the detachable coupling capability through the threaded connection
3Ease of operation
If the upper cover of the housing is unscrewed to replace the filter element, then the filter element can be accessed, but the lower cover will rotate together with the upper cover making replacement difficult
Solution Approach 1:
The housing is segmented into an upper bowl and lower bowl that are detachably coupled. The protruding structure on the upper bowl engages with the filter-mounting base to prevent rotation. When replacing the filter element, only the upper bowl needs to be unscrewed and removed, while the lower bowl remains stationary and fixed to the engine body, simplifying the replacement operation
Solution Approach 2:
The protruding structure is extracted from the upper bowl and engaged with the filter-mounting base to prevent rotation. This allows the upper bowl to be independently removed for filter element replacement without causing the lower bowl to rotate, reducing operational complexity
Data Source
AI summary
The present invention discloses an oil filter housing, comprising an upper bowl adapted to be mounted onto a filter-mounting base of an engine, a top end of the upper bowl being formed with oil inlets and an oil outlet, and a protruding structure being provided on an outer top end surface of the upper bowl, the protruding structure adapted to be engaged with the filter-mounting base so as to position the upper bowl and limit rotation of the upper bowl relative to the filter-mounting base; and a lower bowl detachably coupled to the upper bowl and a bottom end of the lower bowl being closed. The oil filter housing according to an embodiment of the present invention is simple in structure, low in cost, easy to operation and safe.