Valve Socket Stop Geometry to Prevent Upside-Down Assembly
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Solution Overview
Problem
Existing valve devices in transmission systems are prone to incorrect assembly, leading to operational failures due to the lack of clear orientation guidance during installation, resulting in time-consuming error detection and potential disposal of the transmission.
Innovation Solution
A valve device design featuring a radially and axially rigid stop on the valve housing with a stop dimension greater than the internal diameter of the valve seat, ensuring correct orientation by preventing upside-down insertion, and a second annular gap providing a flow path that allows unhindered flow regardless of orientation, simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the valve is designed with symmetric dimensions throughout, then the manufacturing is simplified, but the valve can be inserted in the wrong orientation leading to assembly errors
Solution Approach 1:
The valve housing is designed with asymmetric dimensions: the first housing portion has a different diameter than the second housing portion. This asymmetry creates a unique orientation that prevents incorrect insertion into the valve socket, while still maintaining manufacturing simplicity through the systematic design of the asymmetric features.
2Reliability
If the valve housing has a 2-step design with different diameters, then the assembly orientation is clarified, but the device complexity increases
Solution Approach 1:
The valve housing is segmented into two distinct portions with different diameters. The first housing portion has a larger diameter for insertion into the valve socket, while the second housing portion has a smaller diameter. This segmentation provides clear orientation guidance during assembly while keeping the overall structure relatively simple.
3Ease of operation
If the valve is inserted with the inlet opening first, then the assembly appears correct, but the valve may be installed upside down causing operational failure
Solution Approach 1:
The asymmetric design of the valve housing performs the orientation-checking action preliminarily, before the valve is fully installed. The different diameters of the housing portions ensure that only the correct orientation allows the valve to be inserted into the valve socket, preventing incorrect installation from the outset rather than requiring later detection.
4Reliability
If a stop with large radial dimension is added to prevent incorrect assembly, then the assembly correctness is improved, but the valve housing complexity increases
Solution Approach 1:
The stop function is merged with the existing housing portions of the valve. The first and second housing portions themselves serve as the stopping mechanism due to their different diameters, eliminating the need for separate stop components and reducing overall device complexity while still preventing incorrect assembly.
Data Source
AI summary
A valve device includes a valve socket with a valve seat having internal radius, a valve disposed in the valve socket, and a first flow channel. The valve includes a valve housing, an inlet opening, a flow opening, and a stop. The valve housing includes a first housing portion sitting in the valve seat, and a second housing portion adjoining the first housing portion. The inlet opening is formed opposite the first housing portion and the flow opening is formed on the second housing portion. The stop sits on the valve housing at the inlet opening and radially protrudes beyond the valve housing. The stop includes a radial stop dimension greater than the valve seat internal radius, the radial stop dimension being a smallest radial distance between the valve axis and an area of the stop farthest from the valve axis. The first flow channel leads to the inlet opening.