Patent ID: 8942001
Filing Date: 2015-01-27
Classification: H05K

Abstract:
1. A seal structure for an electronic control device having a circuit board housed in a watertight space of an inside of a housing that is formed by fitting a plurality of fitting members together, the seal structure comprising: first and second seal portions which are formed at a fitting surface portion between the fitting members that are fitted together, one side of a pair of the fitting members of each of the first and second seal portions being provided with a seal groove, the other side being provided with a protruding line, and a gap defined by fitting of the seal groove and the protruding line being filled with a sealant; and an auxiliary seal groove and an auxiliary protruding line which are formed on opposing surfaces of the seal groove of the second seal portion and the protruding line of the second seal portion at a merged part where the second seal portion is joined to the first seal portion at a predetermined angle, and are fitted together with a predetermined gap provided between the auxiliary seal groove and the auxiliary protruding line.