Connection structure between printed circuit board and terminal block, terminal block, and air conditioner

A connection structure between a printed circuit board and a terminal block, the connection structure comprising:

• an insertion portion at one end of the printed circuit board, wherein a surface of the insertion portion comprises a pattern;
• a terminal-block main body comprising a receiving port that receives the insertion portion;
• a nut held in the terminal-block main body;
• and
• a screw tightened into the nut, wherein the pattern is interposed between the screw and the nut when the insertion portion is inserted into the receiving port.

A terminal block that is connected to a printed circuit board on which a pattern is drawn out at an end portion that serves as an insertion portion, the terminal block comprising:

• a terminal-block main body comprising a receiving port that receives the insertion portion;
• a nut held in the terminal-block main body;
• and
• a screw tightened into the nut, wherein the pattern is interposed between the screw and the nut when the insertion portion is inserted into the receiving port.

An air conditioner in which a terminal block for connecting an electric wire is connected to a printed circuit board, the air conditioner comprising:

• a connection structure between the printed circuit board and the terminal block, wherein
• the connection structure comprises:
• an insertion portion at one end of the printed circuit board, wherein a surface of the insertion portion comprises a pattern;
• a terminal-block main body comprising a receiving port that receives the insertion portion;
• a nut held in the terminal-block main body;
• and
• a screw tightened into the nut, wherein the pattern is interposed between the screw and the nut when the insertion portion is inserted into the receiving port.