Vehicle Speaker Mount Drainage Structure for Residual Water
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Solution Overview
Problem
Vehicle electroacoustic transducers attached outside the vehicle cabin are prone to degradation due to residual water at the interface between fasteners and the transducer, especially under conditions influenced by rain.
Innovation Solution
The transducer design includes a metal fitting housing portion with a drain hole and an attachment metal fitting that can be screwed into a member outside the cabin, featuring multiple drain holes and inclined surfaces to efficiently drain water, preventing its accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transducer is attached to a member outside the vehicle cabin using a fastener, then the transducer can be securely mounted for external sound output, but water may accumulate at the interface between the fastener and transducer causing degradation
Solution Approach 1:
The patent extracts the harmful element (water) from the attachment portion by providing a drain hole that allows water to escape from the enclosed space between the fastener and transducer body, preventing water accumulation that would cause degradation
Solution Approach 2:
The patent applies preliminary anti-action by pre-providing a drain hole in the attachment portion before water accumulation occurs, proactively preventing the harmful effect of water accumulation rather than addressing it after the problem arises
2Object-affected harmful factors
If a drain hole is formed in the metal fitting housing portion, then water can be drained effectively, but the structural integrity of the housing may be compromised
Solution Approach 1:
The patent applies local quality by providing reinforcement around the drain hole location in the metal fitting housing portion, ensuring that the local area around the hole maintains sufficient strength while still allowing water drainage functionality
Data Source
AI summary
A vehicle electroacoustic transducer includes: a speaker unit that generates sound; a case that is formed in a box shape and that houses the speaker unit; and an attachment portion that is formed at the case and that is attachable, by a fastener, to a member to be attached which is outside a vehicle cabin, wherein: the attachment portion includes an attachment metal fitting into which the fastener is screwed, and a metal fitting housing portion that houses the attachment metal fitting, and a drain hole for draining water is formed at the metal fitting housing portion.