Oil Level Gauge Guide Using Segmented Engine Housing
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Solution Overview
Problem
Conventional oil level gauge guide apparatuses face challenges in insertability due to constrained layouts and interference with engine components, particularly when using tubular guides, which can lead to vibration issues and increased production costs.
Innovation Solution
An oil level gauge guide apparatus that utilizes the existing space in an engine's housing chamber to form a passage for the oil level gauge, incorporating a belt-shaped guide and a guide portion to prevent interference with moving parts, ensuring smooth insertion and guiding the gauge to the oil pan without using external tubular guides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tubular guide is used to guide the oil level gauge, then the gauge can be guided to the oil pan, but the layout is greatly constrained and the gauge may interfere with various parts
Solution Approach 1:
The guide structure is divided into two separate components: a guide groove formed on the engine body and a guide protrusion formed on the case member. These segmented elements work together to guide the oil level gauge, allowing flexible routing through the housing chamber without requiring a single rigid tubular guide, thus improving layout adaptability while maintaining guiding reliability
Solution Approach 2:
The guide protrusion on the case member acts as an intermediary element that interfaces between the case member and the oil level gauge. This intermediary structure enables the gauge to be guided through the housing chamber without direct contact between the gauge and potentially interfering components, resolving the contradiction between guiding function and layout flexibility
2Ease of operation
If the oil level gauge passes through the housing chamber, then it can reach the oil pan, but the gauge tip may interfere with moving parts like crank sprockets
Solution Approach 1:
The harmful factor of interference with moving parts is extracted and isolated by creating a dedicated guide groove and guide protrusion structure. This separates the oil level gauge's insertion path from the moving parts (crank sprockets) in the housing chamber, allowing smooth insertion while preventing contact with moving components
Solution Approach 2:
The guide groove and guide protrusion form an intermediary guiding path that mediates between the oil level gauge and the housing chamber environment. This intermediary structure channels the gauge along a safe trajectory that avoids moving parts while maintaining ease of insertion
3Reliability
If a tubular guide is used, then the oil level gauge can be guided, but additional parts and complex mounting steps are required
Solution Approach 1:
The guiding function is merged into the existing engine structure by forming the guide groove directly on the engine body and the guide protrusion on the case member. This integration eliminates the need for separate tubular guide components and their associated mounting hardware, reducing device complexity while maintaining reliable guiding function
Solution Approach 2:
The engine body and case member serve multiple functions: they provide structural support, enclose the housing chamber, and simultaneously provide the guiding surfaces for the oil level gauge through the integrated guide groove and protrusion. This multi-functionality reduces the total number of parts needed while maintaining guiding reliability
Data Source
AI summary
An oil level gauge guide apparatus including a body of an internal combustion engine, a case member attached to the body so as to cover a moving part disposed on a side of the body, a passage forming member forming a gauge passage through which an oil level gauge passes between the body and the case member, and a guide portion provided at a lower part of the passage forming member to guide the oil level gauge to the gauge passage. The body and the case member include a first and second facing surfaces facing each other so as to form a space to accommodate the moving part and the guide portion is extended along the gauge passage and protruded from one of the first facing surface and the second facing surface to the other of the first facing surface and the second facing surface.