US 12,258,982 B2
Resin molded article, resin molded article manufacturing method, and hydraulic control device
Arata Yagi, Makinohara (JP); Isanori Shimizu, Makinohara (JP); Masataka Nagayama, Makinohara (JP); Shinji Ohtsuka, Makinohara (JP); and Yoshihiro Takekawa, Kariya (JP)
Assigned to YAZAKI CORPORATION, Tokyo (JP); and ADVICS CO., LTD., Kariya (JP)
Filed by Yazaki Corporation, Tokyo (JP); and ADVICS CO., LTD., Kariya (JP)
Filed on Jun. 27, 2022, as Appl. No. 17/850,121.
Claims priority of application No. 2021-107031 (JP), filed on Jun. 28, 2021.
Prior Publication US 2022/0412381 A1, Dec. 29, 2022
Int. Cl. H05K 5/00 (2025.01); B29C 45/26 (2006.01); B60R 16/00 (2006.01); B60R 16/023 (2006.01); F15B 21/044 (2019.01); H05K 5/02 (2006.01); B60T 13/68 (2006.01); B60T 17/00 (2006.01)
CPC F15B 21/044 (2013.01) [B29C 45/2628 (2013.01); B60R 16/0239 (2013.01); H05K 5/0215 (2022.08); B60T 13/686 (2013.01); B60T 17/00 (2013.01)] 6 Claims
OG exemplary drawing
 
5. A hydraulic control device comprising:
a metal housing having an oil passage formed therein; and
a resin molded article disposed on one surface of the metal housing,
wherein the resin molded article accommodates a substrate in a substrate accommodating portion provided inside the resin molded article, the substrate being configured to control a hydraulic pressure in the oil passage,
wherein in the resin molded article, an electric control component configured to control the hydraulic pressure in the oil passage is disposed in an apparatus accommodating portion formed between the metal housing and the substrate accommodating portion,
wherein in the resin molded article, a ventilation passage is defined to allow the substrate accommodating portion to communicate with an outside of the resin molded article,
wherein the resin molded article comprises a filter configured not to allow liquid to pass therethrough and configured to allow gas to pass therethrough,
wherein the ventilation passage includes:
a first ventilation passage extending from the substrate accommodating portion in a predetermined direction so as to include a bottom portion; and
a second ventilation passage extending from the outside in a direction intersecting the predetermined direction,
wherein the first ventilation passage and the second ventilation passage communicate with each other by allowing the bottom portion to communicate with bifurcated portions provided at an end portion of the second ventilation passage,
wherein a portion where the first ventilation passage and the second ventilation passage communicate with each other is narrowest in the ventilation passage,
wherein each of the bifurcated portions is narrower than the first ventilation passage, and
wherein the filter is provided so as to cover an opening of the first ventilation passage on a substrate accommodating portion side.