Bus bar construction of electrical connection box

A bus bar construction of an electrical connection box, comprising:

• a plurality of m (m=integer.gtoreq.2) bus bar pieces in each of which a predetermined number of bus bars are arranged in series at a preset pitch;
• the bus bars each having an upper portion formed with a first slot and a lower portion formed with a second slot;
• a plurality of n (n=integer.gtoreq.2) terminal pieces in each of which a predetermined number of substantially A-shaped terminals are arranged in series at a preset pitch and intermediate portions of neighboring ones of the terminals are linked with each other;
• the A-shaped terminals each including an upper portion having a connection terminal and a lower portion formed with a slot;
• the m bus bar pieces being arranged longitudinally in m columns;
• the n terminal pieces being arranged laterally in n rows on the m bus bar pieces so as to fit the slots of the n terminal pieces into the first slots of the m bus bar pieces from above such that the m bus bar pieces and the n terminal pieces are assembled with each other in latticed shape;
• and
• the intermediate portions of each of the terminal pieces being cut off in accordance with a necessary circuit pattern and the m bus bar pieces and the n terminal pieces are press fitted into a casing of the electrical connection box.

A method of producing a bus bar construction of an electrical connection box, comprising the steps of:

• forming continuously at a preset pitch by a press, a number of substantially H-shaped bus bars in which intermediate portions of neighboring ones of the bus bars are linked with each other;
• the bus bars each having an upper portion formed with a first slot and a lower portion formed with a second slot;
• cutting off the intermediate portions of the bus bars at an interval of a predetermined number of the bus bars so as to obtain a plurality of m and n (m=integer.gtoreq.2, n=integer.gtoreq.2) bus bar pieces;
• arranging the m bus bar pieces longitudinally in m columns;
• arranging the n bus bar pieces laterally in n rows on the m bus bar pieces so as to fit the second slots of the n bus bar pieces into the first slots of the m bus bar pieces from above such that the m and n bus bar pieces are assembled with each other in latticed shape;
• cutting off the intermediate portions of each of the n bus bar pieces in accordance with a necessary circuit pattern at one stroke;
• and
• press fitting the m and n bus bar pieces into a casing of the electrical connection box at one stroke.

A method of producing a bus bar construction of an electrical connection box, comprising the steps of:

• forming continuously at a preset pitch by a press, a number of bus bars each having an upper portion formed with a first slot and a lower portion formed with a second slot;
• cutting the bus bars at an interval of a predetermined number of the bus bars so as to obtain a plurality of m (m=integer.gtoreq.2) bus bar pieces;
• forming continuously at a preset pitch by a press, a number of substantially A-shaped terminals in which intermediate portions of neighboring ones of the terminals are linked with each other;
• the terminals each including an upper portion having a terminal and a lower portion formed with a slot;
• cutting off the intermediate portions of the terminals at an interval of a predetermined number of the terminals so as to obtain n (n=integer.gtoreq.2) terminal pieces;
• arranging the m bus bar pieces longitudinally in m columns;
• arranging the n terminal pieces laterally in n rows on the m bus bar pieces so as to fit the slots of the n terminal pieces into the first slots of the m bus bar pieces from above such that the m bus bar pieces and the n terminal pieces are assembled with each other in latticed shape;
• cutting off the intermediate portions of each of the n terminal pieces in accordance with a necessary circuit pattern at one stroke;
• and
• press fitting the m bus bar pieces and the n terminal pieces into a casing of the electrical connection box at one stroke.