Patent ID: 9730349
Date: 2017-08-08
CPC Classifications: H05K

Claim:
1. A waterproof-type control unit comprising: a casing made up of a base and a cover; and a circuit board hermetically accommodated in the casing to which one end of each of a plurality of contact terminals for external connection, which are pressed into a connector housing that is a resin molded member, and a plurality of circuit components, are soldered and connected, the waterproof-type control unit further comprising a waterproof sealing material that fills a first sealing gap that is provided on opposing surfaces of the connector housing and the cover, a second sealing gap that is provided on opposing surfaces of the connector housing and the base, and a third sealing gap that is provided on opposing surfaces of the base and the cover, in order to expose an end face of the connector housing, through which the plurality of contact terminals penetrate, out of the casing, wherein the connector housing is provided with a partition wall in which the plurality of the contact terminals are held by press-fitting, the end face of the connector housing is of trapezoid shape; a long bottom side of the trapezoid is fixed to one side of the circuit board, a portion of the circuit board jutting out from one side opposes the base across the second sealing gap, and a short top side and left and right oblique sides of the trapezoid oppose an inner surface of a lateral opening of the cover across the first sealing gap; the cover is provided with a pair of first sealing concave surface sections, which constitute part of a cover-side gap surface of the first sealing gap, opposing a pair of trapezoid oblique side sections of the connector housing, and with a third sealing concave surface section, which constitutes a cover-side gap surface of the third sealing gap, opposing the base; a second sealing concave surface section is provided on the long bottom side of the connector housing, which forms the second sealing gap, opposing the base, and the second sealing concave surface section and the third sealing concave surface section communicate with each other to form a concave surface section of an annular sealing gap; the cover is further provided with overlap reservoirs into which part of the waterproof sealing material flows, and with replenishing inclined surface sections that are provided in trapezoid oblique side sections of the cover and that are parallel to the first sealing concave surface sections, at a connection and merging position of the first sealing concave surface sections and the third sealing concave surface section; and the waterproof sealing material for the first sealing gap is applied turning around at a first sealing gap surface and the replenishing inclined surface sections of the cover, via the overlap reservoirs.