FIXING STRUCTURE OF SENSOR CHIP PROTECTIVE CAP

摘要

PROBLEM TO BE SOLVED: To provide a cap fixing structure which can surely eliminate backlash due to vibrations in spite of dispensing with troublesome bonding operations. SOLUTION: This sensor is provided with a sensor mount 5 for surrounding a sensor chip 4 mounted on a board 3, a sensor chip protective cap 6 for covering the whole thereof and a sealing agent 7 for sealing the board 3 and the cap 6. A small clearance part C2 for a sealing agent entering part for admitting the climbing of the fluid sealing agent 7 is provided between the inner circumferential surface of the cap 6 and the outer circumferential surface of the sensor mount 5. The cap 6 is fixed to the sensor mount 5 by the sealing agent 7 which creeps into the small clearance part C2. Accordingly, a bonding agent is not required.