US Patent No. 10,716,230

WATERPROOF ELECTRONIC DEVICE AND PRODUCTION METHOD OF WATERPROOF ELECTRONIC DEVICE


Patent No. 10,716,230
Issue Date July 14, 2020
Title Waterproof Electronic Device And Production Method Of Waterproof Electronic Device
Inventorship Yusuke Matsuda, Tokyo (JP)
Koji Hashimoto, Tokyo (JP)
Yoshitake Nishiuma, Tokyo (JP)
Takashi Kurata, Tokyo (JP)
Assignee Mitsubishi Electric Corporation, Tokyo (JP)

Claim of US Patent No. 10,716,230

1. A waterproof electronic device comprising:a hermetically sealed housing constituted by a case and a cover having an opening,
a circuit substrate hermetically sealed in the hermetically sealed housing,
a resin-made connector housing having a wall, the resin-made connector housing being mounted on the circuit substrate and partially exposed from the opening of the hermetically sealed housing, and
a plurality of connection terminals press-fitted into the wall of the resin-made connector housing, wherein;
one end of the plurality of connection terminals is connected to a circuit pattern of the circuit substrate and the other end of the plurality of connection terminals is in conductive contact with a contact terminal of a mating connector,
a first annular sealing material is filled and applied between a first sealing surface provided on an outer peripheral part of the case and a second sealing surface provided on an outer peripheral part of the cover,
a second annular sealing material is filled and applied between a first fitting member provided at the opening of the hermetically sealed housing and a second fitting member provided at the outer periphery of a body of the resin-made connector housing,
a terminal part sealing material is applied to a connection surface which is an inner surface of the wall of the resin-made connector housing and is connected to the circuit substrate,
the case and the cover are fastened together by a fastening member so as to be integrated to constitute the hermetically sealed housing, and
the hermetically sealed housing is provided with a sealable ventilation passage that communicates an inside space of the hermetically sealed housing with outside air.