Abstract: A device for evaluating tire rolling resistance includes: a load roll having a surface that simulates a road surface on which a tire is to travel; a load sensor; a phase difference calculation unit; and a rolling resistance evaluation unit. The load roll is an eccentric roll whose rotation axis is eccentric, a polygonal roll having a polygonal shape in cross section, or an elongated circle roll having an elongated circle shape in cross section. The load roll is configured to be pressed against the tire with a prescribed load, fixed in position, and rotated with the rotation of the tire.

Abstract: A rim for tire testing includes a rim body that is rotatably provided in a tire testing device so that a tire to be tested can be attached to the rim body, and a filling unit that can fill the tire to be attached to the rim body with a gas at a predetermined pressure. The rim body can be divided into a plurality of members in a direction along a rotational axis of the rim body. Of the rim body divided into the plurality of members, a rim base portion to be contact with a tire bead portion of the tire is integrated with the other divided members than the rim base portion by use of a coupling member.

Abstract: A substrate on which an electronic component is soldered, includes an electronic component, a through hole positioned on the substrate and passing through the substrate, a solder that joins the through hole and a terminal of the electronic component inserted in the through hole, a pattern formed on a first surface of the substrate, the first surface facing a second surface on which the electronic component is placed, a first resist superimposed on the pattern, an exposed portion of which the pattern is exposed from the first resist around the through hole, and a second resist superimposed on the pattern and arranged between the through hole and the exposed portion.

Abstract: Rolling resistance is appropriately and easily evaluated at an arbitrary temperature of a tire. When a phase difference between a load applied to the tire and a variation in position of the drum is derived for a reference tire, the phase differences ? are derived at a plurality of temperatures within a range from an initial temperature to an atmospheric temperature in a process in which a temperature of the reference tire that reached the initial temperature higher or lower than the atmospheric temperature by heating or cooling approaches the atmospheric temperature from the initial temperature. The phase difference corresponding to a temperature of a tire to be evaluated among the phase differences ? derived for the reference tire at the plurality of temperatures and the phase difference derived for the tire to be evaluated are compared, thereby evaluating rolling resistance of the tire to be evaluated.

Abstract: A uniformity waveform for a tire (T) and a rotational phase of a load drum (4) are measured with a load drum (4) pressed against the tire (T). In a waveform of the frequency domain acquired by frequency conversion of the uniformity waveform, the amplitude and phase for a component of an integer multiple of the rotational frequency of the load drum (4) are found and stored as a correction parameter. A corrected tire (T) uniformity waveform is calculated by subtracting from the uniformity waveform a correction waveform calculated on the basis of the correction parameter, the correction waveform being the one in the rotational phase range of the load drum (4) during tire measurement.

Abstract: A substrate on which an electronic component is soldered, includes an electronic component, a through hole positioned on the substrate and passing through the substrate, a solder that joins the through hole and a terminal of the electronic component inserted in the through hole, a pattern formed on a first surface of the substrate, the first surface facing a second surface on which the electronic component is placed, a first resist superimposed on the pattern, an exposed portion of which the pattern is exposed from the first resist around the through hole, and a second resist superimposed on the pattern and arranged between the through hole and the exposed portion.

Abstract: The present disclosure is effective in easily estimating an integer value bias at a high speed. A processor of a positioning system, a positioning method, and a positioning station performs interference positioning through calculation processing based on positioning data of the base station and positioning data of the positioning station. A plurality of calculation processing items are performed in parallel with different time points as start time points. Thus, even in a case where a situation in which the time required for the calculation of a fix solution differs depending on time point at which time point the calculation processing starts, there is a possibility that one of a plurality of calculation processing items can calculate the fix solution at an earlier time than in a case where single calculation processing performs the calculation. Therefore, it is possible to easily estimate the integer value bias at the high speed.

Abstract: A soldering method includes intermittently ejecting a solder jet to a workpiece from a jet nozzle, and spraying gas on an outer side surface of the jet nozzle when stopping ejection of the solder jet from the jet nozzle. And a soldering apparatus includes a first nozzle from which a solder jet is intermittently ejected to a workpiece, and a second nozzle from which gas is sprayed on an outer side surface of the first nozzle.

Abstract: A pneumatic circuit of a tire testing apparatus includes: a piping configured to guiding air from an air supply source to a tire; a control part configured to output a target command pressure; a pressure proportional control valve part; and a constant-flow air discharge part. The pressure proportional control valve part supplies and discharges the air of a flow rate proportional to a differential pressure between the target command pressure and an internal pressure of the tire so that the internal pressure of the tire becomes the target command pressure, and has a dead band in which the air is not supplied and discharged within a predetermined range. The constant-flow air discharge part is formed between the tire and the pressure proportional control valve part, and is configured to discharge the air of an inside of the piping to an outside at a constant flow rate.

Abstract: A tire traveling test device has a belt that horizontally spans between two drums and a load support device that supports a flat surface of the belt from a lower surface side of the belt. The load support device is provided with a liquid supply means that supplies support liquid between the load support device and the belt and supports the belt from below. The liquid supply means is provided with a plurality of supply holes from which support liquid can be discharged between the load support device and the belt. Additionally, the liquid supply means can adjust the flow rate of the support liquid discharged from the supply holes on the basis of the fluid pressure, which changes according to the tire contact state.

Abstract: A rim for tire testing includes a rim body that is rotatably provided in a tire testing device so that a tire to be tested can be attached to the rim body, and a filling unit that can fill the tire to be attached to the rim body with a gas at a predetermined pressure. The rim body can be divided into a plurality of members in a direction along a rotational axis of the rim body. Of the rim body divided into the plurality of members, a rim base portion to be contact with a tire bead portion of the tire is integrated with the other divided members than the rim base portion by use of a coupling member.

Abstract: The relative displacement in the axial direction between an outer ring fixing member or casing and an inner ring fixing member or rotor is determined, said outer ring fixing member being a member for affixing an outer ring of a bearing on one side, and said inner ring fixing member being a member for affixing an inner ring of the bearing on the one end side. When calculating a thrust load acting on the rotor by multiplying the determined relative displacement by a conversion coefficient, an axial force measuring bolt is used as a tightening bolt for affixing the bearing on the one end side, said axial force measuring bolt enabling measurement of a load acting in the axial direction. The axial force measured by the axial force measuring bolt and the relative displacement during measurement of the axial force are used to calibrate the conversion coefficient.

Abstract: The calibration method for a multi-component force detector is a calibration method for a multi-component force detector provided in a rolling resistance testing machine comprising a spindle to which a tire is mounted, and a traveling drum having a simulated traveling road surface against which the tire is pressed, wherein when processing for calculating force acting on the tire from the measurement value of the multi-component force detector using a crosstalk correction factor for correcting the influence of crosstalk occurring in the multi-component force detector is performed, a test is conducted using at least one or more reference tire the rolling resistance value of which is already known, and the crosstalk correction factor is calibrated using “rolling test data” composed of force measured by the multi-component force detector during the test using the reference tire, and the rolling resistance value of the reference tire used for the measurement.

Abstract: A device for measuring a thrust load acting on a rotor of a hermetically sealed kneader includes displacement sensors (19) and a load-calculating member. The displacement sensors (19) are configured to measure relative displacement along the axial direction of an outer ring-fixing member (17), which is for fixing the outer ring (16) of one end of a bearing (6), or a casing (18) with respect to an inner ring-fixing member (20), which is for fixing the inner ring (13) of the one end of the bearing (6), or the rotor (5). The load-calculating unit calculates the thrust load acting on the rotor (5) by multiplying the relative displacement measured by the displacement sensors (19) by a conversion coefficient.

Abstract: An applied load acting on a tire is varied by alternately moving a load drum in a direction of approaching and leaving the tire. A phase difference between a variation of a position of the load drum and a variation of the applied load is calculated. A tire having an abnormality in rolling resistance is sorted out based on the calculated phase difference.

Abstract: To calibrate a crosstalk correction coefficient of a multi-component force detector provided in a rolling resistance testing machine. A method of calibrating a multi-component force detector provided in a rolling resistance testing machine includes a spindle shaft attached with a tire, a running drum with a simulated road surface for pressing the tire thereon, and a rotation torque meter provided in a rotation shaft of the running drum, wherein when performing a process of calculating a force acting on the tire from a measurement value of the multi-component force detector using a crosstalk correction coefficient for calibrating an influence of crosstalk occurring in the multi-component force detector, the crosstalk correction coefficient is calibrated by using a rolling test data including a rotation torque measured by the rotation torque meter and a force measured by the multi-component force detector.

Abstract: A crosstalk correction coefficient of a multi component force detector provided in a rolling resistance testing machine is calibrated. A method of calibrating a multi component force detector provided in a rolling resistance testing machine including a spindle shaft to which a tire is attached, a running drum with a simulation road surface on which the tire is pressed, and a rotation torque meter provided in a rotation shaft of the running drum; in which, in performing a process of calculating a force acting on the tire from a measurement value of the multi component force detector by using a crosstalk correction coefficient that corrects an influence of crosstalk occurring in the multi component force detector, the crosstalk correction coefficient is calibrated by using a rolling test data including a rotation torque measured by the rotation torque meter and a force measured by the multi component force detector.

Abstract: The relative displacement in the axial direction between an outer ring fixing member or casing and an inner ring fixing member or rotor is determined, said outer ring fixing member being a member for affixing an outer ring of a bearing on one side, and said inner ring fixing member being a member for affixing an inner ring of the bearing on the one end side. When calculating a thrust load acting on the rotor by multiplying the determined relative displacement by a conversion coefficient, an axial force measuring bolt is used as a tightening bolt for affixing the bearing on the one end side, said axial force measuring bolt enabling measurement of a load acting in the axial direction. The axial force measured by the axial force measuring bolt and the relative displacement during measurement of the axial force are used to calibrate the conversion coefficient.

Abstract: Displacement sensors are configured so as to be capable of measuring relative displacement along the axial direction of an outer ring-fixing member, which is for fixing the outer ring of one end of a bearing, or a casing with respect to an inner ring-fixing member, which is for fixing the inner ring of the one end of the bearing, or the rotor. A load-calculating unit calculates the thrust load acting on the rotor by multiplying the relative displacement measured by the displacement sensors by a conversion coefficient.

Abstract: In a tire uniformity measurement, accurate tire uniformity is obtained from a measurement waveform immediately after a rotation of a tire is switched from a normal rotation direction to a reverse rotation direction. A tire uniformity testing device of the present invention includes a measurement unit 108 that obtains a force variation from a uniformity waveform corrected by a correction unit 109 that corrects the uniformity waveform so as to eliminate a shift gradient ? existing in the uniformity waveform measured after a rotation of a tire T1 is reversed, and further includes an air-outflow regulation member 220 that regulates an from flowing into a tire T2 when a drum 205 retreats or advances.