Flat bellows
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SANWA PRESS IND CO LTD
- Filing Date
- 2024-11-28
- Publication Date
- 2026-06-09
AI Technical Summary
【0009】 本発明の金属薄板の平型蛇腹によれば、金属薄板を折り曲げて形成することにより、蛇腹単体での形状保持が可能であるとともに、耐熱性に優れた平型蛇腹を少ない部品点数および工数で製作することができる。また、傾斜部と山折り部、傾斜部と谷折り部とが鈍角をなすことにより、蛇腹の伸縮時における頂部と底部の角度変位が抑制され、頂部と底部に集中する応力を抑制でき蛇腹の耐久性が向上する。
Smart Images
Figure 2026093775000001_ABST
Abstract
Claims
1. A flat bellows made of a thin metal sheet that is continuous in a corrugated shape, comprising a mountain-folded portion, a valley-folded portion, and an inclined portion connecting the mountain-folded portion and the valley-folded portion, The aforementioned mountain-fold portion has a first mountain-fold side surface and a second mountain-fold side surface connected to the first mountain-fold side surface at an arc-shaped apex. The aforementioned valley fold portion has a first valley fold side surface and a second valley fold side surface connected to the first valley fold side surface by an arc-shaped bottom. A flat bellows made of a thin metal sheet, characterized in that the mountain fold portion and the inclined portion are connected at an obtuse angle, and the inclined portion and the valley fold portion are connected at an obtuse angle.
2. The flat bellows according to claim 1, characterized in that the angular displacement of the top and bottom portions during expansion and contraction is suppressed by the inclined portion.