Patent ID: 6382023
Filing Date: 2002-05-07
Classification: G01F

Abstract:
A thermo-sensitive type flow rate sensor in which a holder has connection terminals and a sensing element and said connection terminals and electrodes of said sensing element are connected by wire bonding,said connection terminals and a housing portion are provided mutually separated on one surface of said holder, said housing portion being formed as a recess in one surface of said holder, a protruded securing portion and protruded positioning portions are provided within said recess at ends thereof, said sensing element being oriented within said recess such that an upper surface of the same, having said electrodes, faces outwardly of said housing portion, and a lower surface of said sensing element, without electrodes, is adhered to an upper surface of a securing portion by an adhesive agent, whereby said lower surface contacts upper surfaces of said positioning portions, and a thermal sensitive region of said sensing element does not contact either of said securing portion and said positioning portions, and a gap is formed between said sensing element and a bottom surface of said housing recess.