Battery with a molded in-front terminal
View Patent ↗A battery with a threaded battery terminal for accommodating a threaded terminal bolt is provided. The threaded battery terminal includes a bushing having an axial bore extending between an open end and a closed end; and an insert having a longitudinal axis and a threaded opening extending along the longitudinal axis between an open end and a back wall. The terminal bolt is threadably received in the threaded opening and the back wall of the insert has sufficient strength to cause an overlong bolt to break upon continued threaded insertion subsequent to the bolt contacting the back wall.
1. A threaded battery terminal for a molded battery casing comprising a perimetrical side wall that defines an interior of the molded battery casing, the threaded battery terminal comprising:
a bushing having an axial bore extending between an open end and a closed end; and
an insert having a longitudinal axis and a threaded opening extending along the longitudinal axis between an open end and a back wall, wherein the back wall has a thickness of from 0.170 to 0.190 inches,
wherein the insert is formed within the bushing and the threaded opening is adapted to receive a bolt, wherein the bushing does not extend into the interior of the molded battery casing, wherein when the bolt has a thread engagement of 0.235 inches or more, the bolt breaks before the threads are damaged by continued rotation of the bolt, and wherein the back wall deforms less than or equal to 0.010 inch when an over-long bolt is threaded into the opening and contacts the back wall with a torque of less than 193.9 in-lb force.
2. The threaded battery terminal according to claim 1 , wherein the insert is made from brass or copper and the bushing is made from lead.
3. The threaded battery terminal according to claim 1 , wherein the insert is formed in the bushing by a molding process.