The invention provides a hollow cylindrical filter and a manufacturing method thereof. The hollow cylindrical filter can efficiently process the end part of the winding starting side of a metal wire at low cost. The hollow cylindrical filter is formed by spirally winding a metal wire (20) in multiple layers, and is provided with: an inner cylindrical body (31) which includes a first wire layer (L1) located at the innermost periphery and is formed by winding the metal wire in two or more layers; and an outer cylindrical body (32), which is located on the outer peripheral side of the inner cylindrical body, and which is formed by winding a metal wire. After the inner cylindrical body is formed, the starting end (20a) of the metal wire is folded back and arranged on the outer peripheral side of the inner cylindrical body, and the metal wire is further wound to form an outer cylindrical body, thereby folding the starting end of the metal wire between the inner cylindrical body and the outer cylindrical body.
一种中空筒状过滤器及其制造方法,该中空筒状过滤器低成本且高效地处理金属线材的卷绕开始侧的端部。中空筒状过滤器通过将金属线材(20)呈螺旋状且多层状卷绕而制成,该中空筒状过滤器具有:内侧筒状体(31),其包含位于最内周的第一线材层(L1),由金属线材卷绕两层以上而成;以及外侧筒状体(32),其位于内侧筒状体的紧贴外周侧,由金属线材卷绕而成。在形成内侧筒状体后,将金属线材的起始端部(20a)折回并配置于内侧筒状体的外周侧,进一步卷绕金属线材而形成外侧筒状体,由此将金属线材的起始端部折入内侧筒状体与外侧筒状体之间。
Hollow cylindrical filter and manufacturing method
中空筒状过滤器及制造方法
2024-04-23
Patent
Electronic Resource
Chinese
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