Electronic device including printed circuit board, connector and casing

An electronic device comprising:

• a printed circuit board having a first surface and a second surface and including a plurality of lands;
• a connector located on the first surface of the printed circuit board, wherein the connector includes a housing and a plurality of terminals, and the plurality of terminals are arranged in the housing and electrically coupled with the plurality of lands, respectively, for electrically coupling the printed circuit board and an external connector;
• a casing including a first case, which is located on a first side of the printed circuit board, and a second case, which is located on a second side of the printed circuit board, wherein the first side of the printed circuit board is opposite to the second side of the printed circuit board, and wherein the casing includes a connector opening defined by an open edge portion of the first case and an open edge portion of the second case, and the casing houses the printed circuit board and an inner part of the connector in such a manner that an outer part of the connector protrudes from the connector opening to an outside of the casing;
• and
• a sealing member located between a peripheral edge portion of the first case and a peripheral edge portion of the second case and between the open edge portions of the casing and a surface of the housing of the connector so that water is prevented from entering an inside of the casing, wherein:
• the casing has a sealing part that contacts the sealing member;
• the sealing part of the casing includes a casing-side recess and a casing-side protrusion, wherein the casing-side protrusion protrudes in an inward direction toward the connector;
• the casing-side recess extends from one end to an opposite end of the open edge portion of a first one of the cases;
• the casing-side protrusion extends from one end to an opposite end of the open edge portion of the a second one of the cases;
• the housing has a sealing part that contacts the sealing member and extends in a loop around the surface of the housing;
• the sealing part of the housing includes a connector-side protrusion and a connector-side recess that are connected to each other, and the connector-side protrusion protrudes in an outward direction toward the casing;
• the connector-side protrusion is fitted into the casing-side recess so that the sealing member is located between a distal end of the connector-side protrusion and a surface that forms the casing-side recess;
• and
• the casing-side protrusion is fitted into the connector-side recess so that the sealing member is located between a distal end of the casing-side protrusion and a surface that forms the connector-side recess.