LEAD-ACID BATTERY BUSHING AND LEAD-ACID BATTERY

摘要

A lead-acid battery bushing (1) according to the present invention is insert-molded into a resinous cap. The bushing (1) has a hollow cylindrical shape, and a plurality of stages of ring-shaped projections (3) are formed on the outer circumferential surface of the bushing (1). A continuous notch portion (4) in which notches (4a) extend is formed on parts of the entire circumferences of the ring-shaped projections (3). The notches (4a) are formed by cutting all of the upper, side, and lower surfaces of the ring-shaped projections (3) to have a substantial V-shape in a plan view.