Double Breasted Raincoat Water Resistance via Segmented Sealing
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Solution Overview
Problem
Conventional double-breasted raincoats are ineffective at keeping rain out due to a large gap between the overlapping front sheets and inadequate collar design, allowing wind and rain to penetrate.
Innovation Solution
The raincoat incorporates two cover sheets with a second collar on the inner surface and a mounting element, such as a zipper, to seal the gap between the front sheets and enhance the neck and chest area's water resistance, forming a waterproof shelter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the left front sheet and right front sheet are overlapped with buttons and button holes, then the raincoat has a double breasted appearance and can be closed, but the gap between the front sheets is too large allowing rainwater to permeate directly into the raincoat
Solution Approach 1:
The front closure system is divided into two functional parts: the outer buttons/buttonholes providing the double breasted appearance, and the inner waterproof zipper providing the sealing function. This segmentation allows each component to specialize - the buttons maintain aesthetics while the zipper ensures waterproofing.
Solution Approach 2:
A waterproof zipper is introduced as an intermediary element between the left and right front sheets. This zipper acts as a mediator that provides the necessary waterproof sealing while working in conjunction with the button system to achieve both aesthetic and functional requirements.
2Shape
If the first collar is a suit-style collar that must be erected to overlap a front collar, then the raincoat has a formal appearance, but the wind pressure can cause rainwater to permeate into the raincoat directly from the neck
Solution Approach 1:
The collar system is segmented into an outer suit-style collar for aesthetic purposes and an inner waterproof collar with zipper for protective purposes. This allows the outer collar to maintain the formal appearance while the inner collar structure with waterproof zipper prevents rainwater penetration at the neck area.
Solution Approach 2:
The waterproof zipper in the inner collar is designed to engage before the outer suit-style collar is fully erected. This preliminary waterproof sealing ensures that even when wind pressure acts on the erected collar, rainwater cannot penetrate through the neck area.
Data Source
AI summary
A double breasted raincoat has a body, two sleeves, a first collar, two cover sheets, a second collar, and at least one mounting element. The body has a top portion, a left portion, a right portion, a back sheet, a left front sheet, a right front sheet, a neckline, and two cuffs. The neckline is formed thorough the top portion of the body. The two cuffs are respectively formed through the left portion and the right portion of the body. The two sleeves are respectively connected with edges of the two cuffs. The first collar is connected with an edge of the neckline. The second collar is mounted on an inner surface of the first collar. The at least one mounting element is mounted on a right side edge of the left cover sheet and a left side edge of the right cover sheet.