Sealed overmolded circuit board with sensor seal and edge connector seal and production method of the same

摘要

An electronic apparatus partially overmolded with a overmold sealing material that seals the circuit board, protects the electrical components on the circuit board and provides seals between the circuit board and mating devices is disclosed. The electronic apparatus may be an engine controller. The electrical components may be an electrical edge connector, a sensor, and a heat sink. The sensor may be a pressure sensor. The controller may be connected to a throttle body such that the overmold sealing material provides a first seal between the controller and the throttle body allowing the pressure sensor to be in fluid communication with the interior of the throttle body. A wire harness may be connected to the controller such that the overmold sealing material provides a second seal between the wire harness and the controller protecting the electrical connection. The overmold sealing material may also be translucent.

主权项

1. An engine control system comprising:
a controller having a circuit board with a first side, a second side, and an elongate edge extending between the first and second sides, a section of which defining in combination with a portion of the adjacent first and second sides a connector region; a circuit board electrical contact array disposed on the connector region; a pressure sensor disposed on the first side of the circuit board; an overmold sealing material partially disposed around the controller, wherein the overmold sealing material covers and seals the circuit board while not covering the electrical contact array and the pressure sensor; and a throttle body defining an interior region, an exterior, and a pressure passage extending between the interior region and the exterior, wherein the pressure sensor is in fluid connection with the interior region of the throttle body through the pressure passage and the overmold sealing material provides a first seal between the pressure sensor and throttle body to maintain an exclusive fluid communication between the pressure sensor and the interior region of the throttle body.