Terminal base and electrical connection structure of devices

An electrical connection structure of devices comprising:

• a first device;
• a second device;
• and
• a terminal base,
• wherein the first device and the second device are electrically connected with each other by the terminal base, and
• wherein the terminal base comprises;
• a first plurality of terminals configured to electrically connect the first device and the second device to each other, each of the first plurality of terminals being electrically conductive;
• and
• a housing configured to hold the first plurality of terminals, the housing being made of an electrically insulating resin,
• wherein each of the first plurality of terminals comprises a first connection portion exposed to an outside of the housing so as to be connected to the first device, a second connection portion exposed to the outside of the housing so as to be connected to the second device, and an insert portion insert-molded in the housing,
• wherein the insert portion has a solid cylindrical shape or a hollow cylindrical shape,
• wherein the insert portion comprises a surface processed portion over an entire circumference of an outer surface of the insert portion, and
• wherein the surface processed portion is formed by laser processing and is formed in a shape having minute irregularities.