Abstract: A lap fillet arc welded joint includes: a first steel sheet and a second steel sheet which are overlapped each other, the first steel sheet and the second steel sheet each having a tensile strength of 950 MPa or more; and a weld metal which extends along a corner formed by an upper surface of the first steel sheet and an end surface of the second steel sheet. When: a toe angle of the weld metal is defined as ?; the total number of concave portions present on the surface of the weld metal included a range of 0.4 mm or less from a fusion boundary is defined as NA; and the number of concave portions in contact with ferrite grains having a maximum grain size of 10 ?m or more is defined as NB, the weld metal satisfies the following conditional expressions (1) and (2) at the same time. 0°<?<30°??(1) NB/NA?0.70??(2) (Here, NA is 20 or more).

Abstract: A laser welded joint improving the tensile shear strength without causing an increase in the welding time and without using an expensive remote laser head, that is, a laser welded joint obtained by arranging metal sheets overlaid and welding them by a laser beam from the overlaid direction, wherein when a total thickness of the metal sheets welded overlaid is “t” (mm), the width of the weld metal at the joined interface is 0.6t1/3+0.14 (mm) or more.

Abstract: A lap fillet arc welded joint includes: a first steel sheet and a second steel sheet which are overlapped each other, the first steel sheet and the second steel sheet each having a tensile strength of 950 MPa or more; and a weld metal which extends along a corner formed by an upper surface of the first steel sheet and an end surface of the second steel sheet. When: a toe angle of the weld metal is defined as ?; the total number of concave portions present on the surface of the weld metal included a range of 0.4 mm or less from a fusion boundary is defined as NA; and the number of concave portions in contact with ferrite grains having a maximum grain size of 10 ?m or more is defined as NB, the weld metal satisfies the following conditional expressions (1) and (2) at the same time. 0°<?<30°??(1) NB/NA?0.70??(2) (Here, NA is 20 or more.

Abstract: A press-formed product is shaped by press-working from a tailored blank made up of a plurality of metal sheets butt-welded together. The press-formed product includes a flange section, and an arc-shaped area which is an area of the flange section which is formed by stretch flange deformation, and in which an inner peripheral edge is open. A weld line of the tailored blank intersects with the inner peripheral edge and an outer peripheral edge of the arc-shaped area. An angle ? formed by the weld line and a maximum principal strain direction of the stretch flange deformation is 17 to 84°.

Abstract: A method of joining a metal and a plastic member, a method of joining a CFRP member and a plastic member, a method of joining a metal and a CFRP member through a plastic member, in particular a method of joining members able to join members by a faster joining speed and able to give a joined member excellent in joining strength are provided. A method of joining a metal and a plastic member by overlaying a metal and a plastic member and joining them by firing a laser beam from the plastic member side, comprising overlaying the plastic member and glass through which the laser beam will pass on the metal in that order and firing the laser beam from the plastic member side through the glass at a joining location where the metal and the plastic member are overlaid to join them by a joining speed of 0.5 m to 5.0 m/min.

Abstract: A press-formed product is shaped by press-working from a tailored blank made up of a plurality of metal sheets butt-welded together. The press-formed product includes a flange section, and an arc-shaped area which is an area of the flange section which is formed by stretch flange deformation, and in which an inner peripheral edge is open. A weld line of the tailored blank intersects with the inner peripheral edge and an outer peripheral edge of the arc-shaped area. An angle ? formed by the weld line and a maximum principal strain direction of the stretch flange deformation is 17 to 84°.

Abstract: A method of joining a metal and a plastic member, a method of joining a CFRP member and a plastic member, a method of joining a metal and a CFRP member through a plastic member, in particular a method of joining members able to join members by a faster joining speed and able to give a joined member excellent in joining strength are provided. A method of joining a metal and a plastic member by overlaying a metal and a plastic member and joining them by firing a laser beam from the plastic member side, comprising overlaying the plastic member and glass through which the laser beam will pass on the metal in that order and firing the laser beam from the plastic member side through the glass at a joining location where the metal and the plastic member are overlaid to join them by a joining speed of 0.5 m to 5.0 m/min.

Abstract: A laser welded joint improving the tensile shear strength without causing an increase in the welding time and without using an expensive remote laser head, that is, a laser welded joint obtained by arranging metal sheets overlaid and welding them by a laser beam from the overlaid direction, wherein when a total thickness of the metal sheets welded overlaid is “t” (mm), the width of the weld metal at the joined interface is 0.6t1/3+0.14 (mm) or more.

Abstract: An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of converters are juxtaposed. The protection component protects each of the converters.

Abstract: An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of converters are juxtaposed. The protection component protects each of the converters.

Abstract: A linking member formed of a conductive material is integrated with a current sensor. An end of the linking member is linked and fixed to a battery terminal connected with a battery post of a battery and the other end is linked and fixed to a connecting terminal of a harness. At least a part of the current sensor having the linking member, the harness having the connecting terminal, and a fixing member that links and fixes the linking member and the connecting terminal is fixed to the battery to contact the battery in a state in which the linking member is linked and fixed to the battery terminal and the connecting terminal. Thus, vibration resistance and connection reliability of the current sensor can be improved.

Abstract: An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of converters are juxtaposed. The protection component protects each of the converters.

Abstract: A semiconductor dynamic quantity sensor includes moving parts displaceable in a predetermined direction over a supporting substrate and a beam portion for connecting said supporting substrate and said moving parts. The beam portion includes beams arranged in parallel and connected together at first end portions by a connecting portion. The beams bend in a direction perpendicular to the longitudinal direction of said beams. Outer side beams have an equal length and are fixed at other end portions to said supporting substrate. The moving parts are connected to the other end portion of another beam. The outer side beams and connecting portion have a parameter (A/B)/(T/L) equal to at least 20.

Abstract: An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of converters are juxtaposed. The protection component protects each of the converters.

Abstract: A sensor includes a sensing portion for sensing physical quantity, a connector portion integrated with the sensing portion for electrically connecting the sensing portion and an outer circuit outside the sensor, a sensor casing for accommodating the sensing portion, and a connector casing for accommodating the connector portion. Both the sensor casing and the connector casing are made of thermoplastic resin. The sensor casing has a predetermined portion exposed outside from the connector casing. The other portion of the sensor casing is covered with the connector casing.

Abstract: A linking member formed of a conductive material is integrated with a current sensor. An end of the linking member is linked and fixed to a battery terminal connected with a battery post of a battery and the other end is linked and fixed to a connecting terminal of a harness. At least a part of the current sensor having the linking member, the harness having the connecting terminal, and a fixing member that links and fixes the linking member and the connecting terminal is fixed to the battery to contact the battery in a state in which the linking member is linked and fixed to the battery terminal and the connecting terminal. Thus, vibration resistance and connection reliability of the current sensor can be improved.

Abstract: An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of converters are juxtaposed. The protection component protects each of the converters.

Abstract: A pressure sensor includes a diaphragm for sealing liquid. The diaphragm includes a plurality of convexities, which are disposed concentrically on the diaphragm. Each convexity has a circular arc cross-section in a radial direction and has a ring shape. The sensor has a configuration factor. The configuration factor is in a range between 2.5 and 3.5. The diaphragm of the sensor has excellent deformability so that detection error of the sensor is reduced.

Abstract: A semiconductor dynamic quantity sensor includes moving parts displaceable in a predetermined direction over a supporting substrate and a beam portion for connecting said supporting substrate and said moving parts. The beam portion includes beams arranged in parallel and connected together at first end portions by a connecting portion. The beams bend in a direction perpendicular to the longitudinal direction of said beams. Outer side beams have an equal length and are fixed at other end portions to said supporting substrate. The moving parts are connected to the other end portion of another beam. The outer side beams and connecting portion have a parameter (A/B)/(T/L) equal to at least 20.

Abstract: A semiconductor device includes a semiconductor layer supported by a support substrate etched to form a moving part released from the support substrate. The moving part has a plurality of portions extending in directions different from each other. A plurality of through-holes is formed as slender holes elongated along a length direction of each of the portions in each of the plurality of portions.