Tuning fork terminal and electrical connection box

An electrical connection box comprising:

• a casing that houses electronic components and an electric wire;
• and
• a busbar housed in the casing to electrically connect a mating terminal of the electronic component and the electric wire to each other, wherein
• the busbar has a tuning fork terminal provided for each of the electronic components to receive the mating terminal inserted and electrically connected,
• the tuning fork terminal has
• a pair of press fit pieces having end surfaces facing each other with a gap into which the mating terminal is inserted,
• a connecting portion that connects one-end sides of the pair of press fit pieces,
• contact portions protruding from the other end sides of each of the end surfaces of the pair of press fit pieces toward mutual facing direction to pressedly fit the mating terminal inserted into the gap, and
• a connection end surface that smoothly connects the one-end sides of each of the end surfaces of the pair of press fit pieces and an end surface of the gap side of the connecting portion, and
• the connection end surface is formed by hollowing the one-end side of the end surface of the press fit piece more than the other part of the end surface, and the one-end side of each of the end surfaces of the pair of press fit pieces and the end surface of the connecting portion are smoothly connected in an arc shape to form a curved surface.