WASHER AND MANUFACTURING METHOD OF WASHER

• Main Authors: KATO KEIICHIRO, KONDO MASATAKA
• Format: Patent
• Language: English; Japanese
• Published: 16.04.2024
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a washer which can prevent seat face pressure from being generated while being deviated to an internal peripheral side of a seat face, and a manufacturing method of the washer.SOLUTION: A washer 10 for use in a fastening part of a vehicle has a plurality of stress dispersion parts 15 at a seat face 13, the stress dispersion parts 15 may be formed into recessed shapes, and a washer manufacturing method for manufacturing the washer 10 comprises a press process for forming the stress dispersion parts 15 into the recessed shape by making a press die pressure-contact with the seat face 13.SELECTED DRAWING: Figure 1 【課題】座面圧が座面の内周側に偏って生じることを抑制することができるワッシャ及びワッシャの製造方法を提供する。【解決手段】ワッシャ１０は、車両の締結部に用いられるものであって、座面１３に複数の応力分散部１５を有しており、それら応力分散部１５は凹状をなしているものとすることができ、ワッシャ１０を製造するワッシャの製造方法は、座面１３にプレス型を圧接させて応力分散部１５を凹条に形成するプレス工程を備える。【選択図】図１