Abstract: A method of manufacturing a pressure sensor is provided whereby the pressure sensor includes a joint, a diaphragm, and an adapter disposed between the joint and the diaphragm. The adapter includes an axis portion and a flange projecting in a radial direction from the axis portion. The axis portion is disposed such that one end does not interfere with the joint and the other end is welded to the diaphragm. The diaphragm is welded to the adapter and the welded portion the welded portion is positioned on an inner side of an end face of the joint. The joint is caulked to a peripheral edge of the flange of the adapter.

Abstract: A pressure sensor includes: a main body case including a housing (1) and a joint (2); an electronic circuit (3) housed inside the main body case to convert detected pressure into electrical signals to send out; a connecting metal piece (5), one end (51)of which abuts on an electrode (31) of the electronic circuit (3); a terminal (4), one end (41) of which is joined to the other end (52) of the connecting metal piece (5) and the other end (42) of which is disposed outside the main body case; and a cushion (7) biasing the one end (51) to the electrode (31). The one end (51) and the electrode (31) are electrically connected by biasing force of the cushion (7), which eliminates welding, enabling manufacturing at low cost.

Abstract: An adapter (2) disposed between joint (1) and diaphragm (3) includes an axis portion (21) and a flange (22) projecting radially from the axis portion (21). The axis portion (21) is arranged so that one end thereof does not interfere with the joint (1) and the other end is welded to the diaphragm (3), and the joint (1) is caulked to a peripheral edge of the flange (22). Since the diaphragm (3) is not directly joined to the joint (1), welding is not performed near the joint (1), but can be performed in a wide space where equipment is suitably arranged. In addition, caulking operation of the joint (1) to the adapter (2) can be performed by pressing a caulking portion (12C) formed in advance in the joint (1) against the outer peripheral edge of the flange (22), so that a wide space is unnecessary for caulking.

Abstract: An adapter (2) disposed between joint (1) and diaphragm (3) includes an axis portion (21) and a flange (22) projecting radially from the axis portion (21). The axis portion (21) is arranged so that one end thereof does not interfere with the joint (1) and the other end is welded to the diaphragm (3), and the joint (1) is caulked to a peripheral edge of the flange (22). Since the diaphragm (3) is not directly joined to the joint (1), welding is not performed near the joint (1), but can be performed in a wide space where equipment is suitably arranged. In addition, caulking operation of the joint (1) to the adapter (2) can be performed by pressing a caulking portion (12C) formed in advance in the joint (1) against the outer peripheral edge of the flange (22), so that a wide space is unnecessary for caulking.

Abstract: An electric wire insertion hole (41) arranged in a housing (4), an ventilation path of inside space (422) of which one end is opened to a pressure sensor internal space (7) and an intersection portion (421) communicating the both each other are provided. Since the electric wire insertion hole (41) and the intersection (421) intersect at right angles, water or dust entering into the electric wire insertion hole (41) does not enter a lot into the intersection (421). Therefore, water or dust hardly enters into the pressure sensor internal space (7). There is no need of a waterproof or a dustproof filter or the like to prevent water or dust, hence low cost manufacturing can be achieved.

Abstract: An electric wire insertion hole (41) arranged in a housing (4), an ventilation path of inside space (422) of which one end is opened to a pressure sensor internal space (7) and an intersection portion (421) communicating the both each other are provided. Since the electric wire insertion hole (41) and the intersection (421) intersect at right angles, water or dust entering into the electric wire insertion hole (41) does not enter a lot into the intersection (421). Therefore, water or dust hardly enters into the pressure sensor internal space (7). There is no need of a waterproof or a dustproof filter or the like to prevent water or dust, hence low cost manufacturing can be achieved.

Abstract: A pressure sensor includes: a main body case including a housing (1) and a joint (2); an electronic circuit (3) housed inside the main body case to convert detected pressure into electrical signals to send out; a connecting metal piece (5), one end (51)of which abuts on an electrode (31) of the electronic circuit (3); a terminal (4), one end (41) of which is joined to the other end (52) of the connecting metal piece (5) and the other end (42) of which is disposed outside the main body case; and a cushion (7) biasing the one end (51) to the electrode (31). The one end (51) and the electrode (31) are electrically connected by biasing force of the cushion (7), which eliminates welding, enabling manufacturing at low cost.

Abstract: An adapter (2) disposed between joint (1) and diaphragm (3) includes an axis portion (21) and a flange (22) projecting radially from the axis portion (21). The axis portion (21) is arranged so that one end thereof does not interfere with the joint (1) and the other end is welded to the diaphragm (3), and the joint (1) is caulked to a peripheral edge of the flange (22). Since the diaphragm (3) is not directly joined to the joint (1), welding is not performed near the joint (1), but can be performed in a wide space where equipment is suitably arranged. In addition, caulking operation of the joint (1) to the adapter (2) can be performed by pressing a caulking portion (12C) formed in advance in the joint (1) against the outer peripheral edge of the flange (22), so that a wide space is unnecessary for caulking.

Abstract: A pressure sensor (1) having a first terminal (35), the first terminal (35) including a horizontal portion (61) and a vertical portion (62) at an intermediate portion thereof and being elastically deformable. A portion of the first terminal (35) being inserted and soldered to a circuit substrate (33) has a collar portion (63) being abutted around a through-hole (51) of the circuit substrate (33). The first terminal (35) is fixed at a state being pressed to the circuit substrate (33) by the collar portion (63) and being slightly compressed between a base member (32). When the circuit substrate (33) and the base member (32) are spaced apart by circumambient heat, the first terminal (35) can follow by the compressed margin. When the first terminal (35) itself is thermally expanded, the first terminal (35) can follow by an elastic deformation of the horizontal portion (61) and the vertical portion (62).