Ribbed Electrical Casing Structure for Jet-Water Sealing
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Solution Overview
Problem
Conventional casings for outdoor power control apparatuses face challenges in maintaining high waterproof properties, particularly against jet water pressure, which can compromise the integrity of the waterproof seal and allow water intrusion.
Innovation Solution
The casing design incorporates a cover body with a flat plate-like cover portion and outer side surface cover portions, featuring first and second ribs on the outer side surfaces to reduce the impact of jet water, combined with a seal member to enhance waterproof performance, achieving a protection grade corresponding to 'IP45' against jet water from all directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof seal is arranged between the casing body and cover body, then the waterproof property is improved, but the seal can be compromised by jet water pressure
Solution Approach 1:
The patent applies preliminary action by providing ribs on the outer side surface of the casing body before the jet water reaches the waterproof seal. These ribs protrude outward to intercept and disperse jet water in advance, reducing its pressure before it can compromise the seal between the casing body and cover body.
Solution Approach 2:
The ribs serve as an intermediary element between the jet water and the waterproof seal. By positioning the ribs on the outer side surface, they act as a protective mediator that absorbs and redirects the force of jet water, preventing direct impact on the seal and maintaining waterproof integrity.
2Ease of manufacture
If the casing is designed with simple structure, then the manufacturing complexity is reduced, but the waterproof performance against jet water may be insufficient
Solution Approach 1:
The patent applies segmentation by dividing the outer side surface of the casing body into multiple regions using protruding ribs. This segmentation creates multiple barrier zones that collectively enhance waterproof performance against jet water, while each rib can be manufactured using standard molding techniques, maintaining ease of production.
Data Source
AI summary
Provided are a casing for an electrical apparatus for housing an electrical apparatus includes: a casing body having an opening; a cover body that includes a flat plate-like cover portion having a rectangular shape for covering the opening, and outer side surface cover portions that are continuous to respective sides of the flat plate-like cover portion and cover outer side surfaces of the casing body; and first ribs that are provided on the outer side surfaces of the casing body covered by the outer side surface cover portions and extend along the respective sides, and a power control apparatus that includes the casing for an electrical apparatus and the electrical apparatus housed in the casing for an electrical apparatus.