Vehicle Switch Casing Inclined Opening for Liquid Path Control
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Solution Overview
Problem
Conventional switch devices for vehicles face difficulties in predicting the path of liquid when it attaches, making it challenging to manage and prevent liquid from entering the device, which can lead to electrical issues.
Innovation Solution
The switch device features a casing with an inclined or curved opening end surface that directs liquid away from the connector part, allowing it to be easily collected and managed, reducing the risk of electrical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional switch device structure is used, then the device can prevent electric short circuit when water infiltrates inside, but it is difficult to predict the path of liquid when it attaches on the surface
Solution Approach 1:
The opening end part of the outer circumferential part of the casing is configured with an inclined surface or curved surface that is inclined relative to the direction of gravity. This curved/inclined structure guides liquid that attaches on the surface to flow along a predictable path toward the opening end part, enabling easy specification of liquid paths while maintaining the reliability of electric short circuit prevention
2Difficulty of detecting and measuring
If the opening end part has an inclined or curved surface, then liquid path becomes easy to specify, but the device complexity increases
Solution Approach 1:
The inclined or curved surface is applied locally only to the opening end part of the outer circumferential part of the casing, rather than the entire device. This localized application achieves the goal of making liquid paths easy to specify while minimizing the increase in overall device complexity
Solution Approach 2:
By using simple inclined surfaces or curved surfaces at the opening end part, the patent achieves liquid path control without requiring complex mechanical structures, maintaining relative simplicity while improving liquid path predictability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables easy prediction and management of liquid paths on the switch device, reducing the risk of electrical issues and facilitating effective liquid discharge, thereby enhancing the reliability of the switch device in wet conditions.
Implementation Method 1
an opening end part of an outer circumferential part of the casing includes an inclined surface inclined relative to a direction of gravity or a curved surface inclined relative to the direction of gravity
Data Source
AI summary
An object is to make it easy to specify, when a switch device for a vehicle gets wet, a path of liquid which attaches on the switch device. There are included: a switch member 13; a connector part 15 connected to the switch member 13; and a casing 14 enclosing the connector part 15, wherein in a state of being attached to a vehicle, an opening end part 14d of an outer circumferential part 14a of the casing 14 includes an end face 21 inclined relative to a direction of gravity G or a curved surface inclined relative to the direction of gravity.