Abstract: An embodiment is to provide a strain sensor fixing device and torque sensor using the same capable of preventing the sensor performance from being deteriorated, and preventing the device configuration from being upsized, and further capable of securely fixing the strain sensor to a structure. A fixing member includes a first end and a second end. The first end is provided with a projection which contacts a first structure and the second end contacts a first end of a strain body provided on the first structure. A screw is inserted into the first structure and screwed into a part of the fixing member between the first end and the second end.

Abstract: A metallic base member includes a holding section and a first flange. A sensor chip on which sensor element is arranged is provided on the holding section. An insulating adjusting member is provided on the holding section around the sensor chip and a circumference thereof is positioned between a circumference of the holding section and a circumference of the first flange. A metallic housing includes an opening section and a second flange, an inner surface of the opening section is brought into contact with the circumference of the adjusting member, and the second flange is joined to the first flange.

Abstract: In a force sensor according to one embodiment, a main body is cylindrical. A cylindrical movable body is movable with respect to the main body and includes at least three circular openings in the outer circumference thereof. A strain body is fixed to the main body and the movable body and is deformable according to the movement of the movable body. Strain sensors are provided on the strain body. A first stopper is arranged inside each of the openings and includes a first outer circumferential surface including a first outer diameter less than a diameter of the opening. A cylindrical second stopper is arranged separate from a first inner circumferential surface of the main body by a first distance, includes a second outer circumferential surface of a second outer diameter less than a diameter of the first inner circumferential surface.

Abstract: An electronic component includes a housing and a cover. The housing includes a concave portion accommodating therein elements. The cover covers the concave portion. A laser-welded portion including a discontinuous portion is provided along a circumference of the concave portion of the housing and fixes the cover to the housing.

Abstract: A housing includes a concave portion in which components are to be accommodated. A cover covers the concave portion. A first laser-welded portion is provided along a circumference of the concave portion of the housing and fixes the cover to the housing. The cover includes an opening positioned inside of the first laser-welded portion and corresponding to a part of the circumference of the concave portion of the housing.

Abstract: In a force sensor according to one embodiment, a main body is cylindrical. A cylindrical movable body is movable with respect to the main body and includes at least three circular openings in the outer circumference thereof. A strain body is fixed to the main body and the movable body and is deformable according to the movement of the movable body. Strain sensors are provided on the strain body. A first stopper is arranged inside each of the openings and includes a first outer circumferential surface including a first outer diameter less than a diameter of the opening. A cylindrical second stopper is arranged separate from a first inner circumferential surface of the main body by a first distance and includes a second outer circumferential surface of a second outer diameter less than a diameter of the first inner circumferential surface.

Abstract: A fan unit produces an airflow. A pressure difference generating member causes a pressure difference in the airflow. A sensor detects a pressure difference between the air pressure on the upstream side of the pressure difference generating member and the air pressure on the downstream side thereof. A straightening plate is provided between the fan unit and the pressure difference generating member, and straightens the airflow produced by the fan unit. A straightening plate comprises a first fin and a second fin which are arranged along the airflow, and a lattice-like third fin which is arranged on the downstream side of the first fin and the second fin, and through which the airflow through the first fin and the second fin passes.

Abstract: A strain body according to an embodiment includes a central portion, an outer peripheral portion, connecting portions, strain sensors provided on main surfaces of the connecting portions, reference resistors provided on a main surface of the central portion, and constructing a bridge circuit with the strain sensors, an electrode for taking a detection signal of the bridge circuit, a lead wire making electric connection between the electrode and the outside, and an anisotropic conductive film provided between the electrode and the lead wire to make electric connection between a terminal of the electrode and a terminal of the lead wire.

Abstract: A strain body according to the embodiments includes a central portion, an outer peripheral portion, connecting portions each includes a first connecting portion adjacent to the outer peripheral portion and a second connecting portion adjacent to the central portion, strain sensors provided on main surfaces of the connecting portions, reference resistors provided on a main surface of the central portion, and a strain increasing portion configured to increase strain occurring at the first connecting portion more than strain occurring at the second connecting portion, on a back surface side opposed to the main surface of the first connecting portion.

Abstract: A force sensor includes a first structure, a second structure, a plurality of third structures and a plurality of strain sensors. The first structure includes three or more first elastic portions deformable in six axial directions. The second structure includes three or more second elastic portions deformable in the six axial directions, and three or more relay portions connected to the second elastic portions, respectively, and deformable in the six axial directions. A plurality of third structures are provided respectively between each of the relay portions of the second structure and each of the first elastic portions of the first structure. The plurality of strain sensors are provided between the first structure and each of the relay portions.

Abstract: An elastic body is fixed to a main body and a movable body and is deformable according to the movement of the movable body. A strain sensor is provided on the elastic body and includes a strain body. The movable body includes an opening. The stopper member includes a first contact portion and a second contact portion provided inside the opening, whose distances from the opening are different from each other. The first contact portion is located in a direction in which the movable range of the strain body is great, and the second contact portion is located in a direction in which the movable range of the strain body is small.

Abstract: A magnetic bearing includes a ring-shaped first magnet, a ring-shaped second magnet, a first magnetic body and a second magnetic body. The ring-shaped first magnet is magnetized in an axial direction. The ring-shaped second magnet is concentrically arranged with the first magnet and is magnetized in the axial direction. The first magnetic body is provided on a first surface in the axial direction of the second magnet. The second magnetic body is provided on a second surface parallel to the first surface in the axial direction of the second magnet. A thickness of each of the first magnetic body and the second magnetic body is less than or equal to an acceptable fluctuation amount in the axial direction of the second magnet with respect to the first magnet and greater than or equal to 0.1 mm.

Abstract: A torque sensor includes a first region, a second region, a plurality of third regions connecting the first and second regions, a first strain generation part and a second strain generation part. The first strain generation part of which a first end is provided on the first region, and of which a first intermediate portion is provided on a second structure. The second strain generation part of which a third end is provided on the first region, of which a second intermediate portion is provided on the second region, and of which a fourth end is provided near a second end of the first strain generation part. A strain body provided with a resistor connects the second end of the first strain generation part and the fourth end of the second strain generation part.

Abstract: A strain generation body and a force sensor equipped with the strain generation body, which can reduce a temperature error between strain sensors and reference resistors and the influence of external noise and which can improve detection accuracy, are provided. A strain generation body comprises a center part, an outer-peripheral part, connecting parts, a plurality of strain sensors, a plurality of reference resistors. The outer-peripheral part surrounds a periphery of the center part. The connecting parts connect the center part and the outer-peripheral part. The strain sensors are provided on main surfaces of the connecting parts. The reference resistors are provided on a main surface of the center part and constitute bridge circuits together with the strain sensors.

Abstract: Provided is a torque sensor which enables the allowable torque and sensitivity of a strain sensor to be independently set, or for which the mechanical strength can be independently set. The torque sensor comprises a first region, a second region, and a plurality of third regions which connect the first and second regions, wherein the torque to be measured is transmitted between the first and second regions through the third regions. A first strain generation part is provided between the first region and the second region, and is equipped with a first resistor. A second strain generation part is provided between the first region and the second region at a location separated from the first strain generation part, and is equipped with a second resistor.

Abstract: This speed reducer with an electric motor has: a hollow shaft; a casing fixed to the hollow shaft; a fixed part that is relatively stationary with respect to the casing; an electric motor; a speed reduction mechanism; an output part; and a torque sensor that is connected to the casing and the fixed part. The torque sensor has an elastically deformable strain body that has an annular outer ring and an annular inner ring and a plurality of strain sensors. The outer ring and the inner ring are respectively located at an end portion on the radial outside and the radial inside of the torque sensor and is connected to one of the casing and the fixed part. Each of the plurality of strain sensors is at least partially located in a radial direction between the outer ring and the inner ring.

Abstract: An air blower capable of preventing a deformation of the vane wheel is provided. A cylindrical holder is provided on rotatable shaft. A vane wheel is provided on the outer circumference of the holder. The holder includes a top section including a plurality of first openings at one end thereof in the axial direction, and includes a flange including a plurality of second openings at the other end thereof, and the vane wheel includes first protrusions to be inserted into the first openings of the holder and fixed to the top section by deformed sections protruding from the first openings, and second protrusions to be inserted into the second openings of the holder and fixed to flange by deformed sections protruding from the second openings.

Abstract: The object is to provide a mounting structure for a torque sensor capable of improving a detection accuracy of a torque sensor. A torque sensor includes a first structure, a second structure, a third structure provided between the first structure and the second structure, and at least two sensor units provided between the first structure and the second structure. A plurality of contact portions are provided on one of the first structure and the first attachment portion and one of the second structure and the second attachment portion, and are in contact with another of the first structure and the first attachment portion and another of the second structure and the second attachment portion.

Abstract: A torque sensor includes a first structure, a second structure, a third structure provided between the first structure and the second structure, and at least two sensor units provided between the first structure and the second structure. A plurality of first contact portions having a structure integrated with the first structure is provided inside an outer peripheral portion of the first structure, first distal ends are arranged near the outer peripheral portion, and the first distal ends are in contact with a first attachment portion. A plurality of second contact portions having a structure integrated with the second structure is provided at a part of an inner peripheral portion of the second structure, second distal ends are arranged near the inner peripheral portion, and the second distal ends are in contact with a second attachment portion.

Abstract: A torque sensor which can improve detection accuracy is provided. The torque sensor includes a first structure, a second structure, a third structure provided between the first structure and the second structure and at least two sensor portions provided between the first structure and the second structure, and a stiffness of one of the first structure and the second structure, closer to the sensor portions is higher than that of the other one.