SPOT WELDER ELECTRODE PART

摘要

Provided is a spot welder electrode part that can prevent overheating of an electrode holder and a small tip. A recessed mounting part (10b) with a circular cross-sectional shape is formed as a depression in the surface of a projecting part (10a) of an electrode holder (10), a first O-ring groove (10c) is formed in the inner circumferential surface of the recessed mounting part (10b), a cooling water channel (10g) connecting to the recessed mounting part (10b) is formed in the electrode holder (10), and a cylindrically-shaped mounting part (20b) is formed at the base end of a contact part (20a) of an electrode (20). A second O-ring groove (20c) is also formed in the outer circumferential surface of the mounting part (20b), the mounting part (20b) is connected to the inside of the recessed mounting part (10b), and an O-ring (30) is fit into the first O-ring groove (10c) and the second O-ring groove (20c) to mount the electrode (20) at the projecting part (10a). The electrode (20) and the projecting part (10a) are cooled by cooling water flowing inside the cooling water channel (10g).