Circuit board mounting structure for piezoresistive type sensor

The utility model discloses a circuit board mounting structure for a piezoresistive type sensor. The circuit board mounting structure comprises a pedestal, a circuit board and a socket, wherein the rear end of the pedestal is provided with a recessed cavity; a part, corresponding to the recessed cavity, of the socket is provided with an open cavity; a circuit board positioning structure is arranged between the circuit board and the pedestal; the circuit board positioning structure comprises plug columns and circuit board positioning grooves, the plug columns are matched with the circuit board positioning grooves, the pedestal is provided with an annular groove positioned in the recessed cavity, the side wall of the open cavity can be conveniently plugged in annular groove, and the side wall of the recessed cavity and the side wall of the open cavity form a bound edge connection structure; an elastic component is welded on one face, facing toward the open cavity, of the circuit board; the other end of the elastic component contacts with a plug pin in the socket and therefore electric connection is formed; a socket positioning structure is arranged between the socket and the pedestal, the socket positioning structure comprises positioning ribs and socket positioning grooves, and the positioning ribs are matched with the socket positioning grooves. Through the structure, the circuit board and the socket can be quickly positioned on the pedestal, convenient and quick installation as well as positioning reliability can be realized, no conducting wire needs to be welded between the circuit board and the socket, the sensor is small in overall size, and automation equipment can be adopted for assembling operation.