Abstract: Each of a plurality of hydraulic pressure sensors includes a lower case and an upper case fixed above the lower case. A valve body includes an upper body including a hole portion arranged to house the hydraulic pressure sensors, and a lower body including an oil passage. A pressed portion is defined in the lower case. The pressed portion is arranged to project horizontally in the lower case so as to be opposed to the upper case. The pressed portion is arranged to be pressed downward by a pressing portion of the upper body. At least one of the upper body and the lower body includes a positioning portion arranged to horizontally position each of the hydraulic pressure sensors in the hole portion.

Abstract: In an oil-pressure-sensor attachment structure according to an aspect of the invention, an oil channel body includes a lower body and an upper body arranged at an upper side of the lower body in a superposed manner. The attachment structure includes the upper body, a sensor case, and a connection member including an electrical connection portion that electrically connects an external power supply with a sensor main body. The connection member contacts the upper body from the upper side. The upper body has a through hole in an up-down direction. The sensor case includes a columnar portion that extends in the up-down direction and is inserted into the through hole, a flange portion that protrudes outward in the radial direction from the columnar portion and is arranged to face the lower side of the upper body, and a first hook portion that is hooked to the connection member.

Abstract: A pressure sensor device includes a pressure sensor having a housing positioned on a center axis extending vertically, a sensing hole provided in a lower part of the housing, and an electrode unit provided in an upper part of the housing; and a connecting member having a contact spring that is pressed against the electrode unit of the pressure sensor. The electrode unit includes a first frame-shaped electrode having a frame-like shape that is rotationally symmetrical with respect to the center axis; and an annular first-surface portion on which the first frame-shaped electrode is placed.

Abstract: According to one aspect of the present invention, there is provided an oil pressure sensor attachment structure including: the oil path body; the sensor case; and a fixing member which fixes the sensor case to the oil path body. The sensor case has a columnar portion which is disposed along a central axis extending in an up and down direction, and a flange portion which protrudes from the columnar portion to an outside in a radial direction. The fixing member has a fixing portion which comes into contact with the oil path body and is fixed thereto, and a pressing portion which comes into contact with the upper surface of the flange portion and presses the flanges portion against the oil path body. The fixing portion and the pressing portion are disposed with an interval therebetween.

Abstract: An oil pressure sensor attachment structure includes the oil path body; the sensor case; and a seal member. The oil path body has an accommodation hole portion which accommodates the oil pressure sensor. The accommodation hole portion has a small-diameter hole portion and a large-diameter hole portion. The sensor case has a columnar portion which is disposed along a central axis extending in the up and down direction and of which at least a portion is inserted into the small-diameter hole portion. A flange portion which protrudes from the columnar portion to an outside in a radial direction and is inserted into the large-diameter hole portion. The flange portion is disposed to face a lower side of the upper body in the up and down direction. The seal member has an annular shape, and seals a portion between an inner surface of the accommodation hole portion and the sensor case.

Abstract: A sensor casing includes a lower case and an upper case that is fixed to an upper part of the lower case. A valve body includes an upper body including an accommodation space in which a sensor casing is disposed and a lower body in which an oil passage is formed. The upper body includes a stopper that prevents downward movement of the oil pressure sensor along a central axis. The sensor casing includes an engagement portion that engages with the stopper to retain the oil pressure sensor in the accommodation space.

Abstract: A power supply device includes converters, a command circuit, and a setter. The converters correspond to loads. The command circuit controls the converters. The setter sets a magnitude of an output of at least one target converter of the converters in accordance with an output characteristic representing a relationship between an input voltage of the at least one target converter and an output limit value which is an upper limit value of the output from the at least one target converter. The output characteristic is a characteristic that the output limit value decreases as the input voltage lowers when the input voltage is lower than a threshold. The setter varies the threshold of the output characteristic in accordance with an operation status of the converters and sets the magnitude of the output from the at least one target converter in accordance with the output characteristic whose threshold has been varied.

Abstract: A hydraulic sensor attachment structure includes an accommodating portion, a sensor case, and a lid disposed over the accommodating portion. In the hydraulic sensor attachment structure, an oil passage body includes the accommodating portion and a hydraulic pressure detection port. A hydraulic sensor includes a sensor main body, and the sensor case that covers the sensor main body. The accommodating portion includes a support portion that supports the hydraulic sensor from below. The sensor case includes a detection port portion. The accommodating portion includes a fastening portion and the lid includes a fastening portion. By fastening the fastening portion of the accommodating portion and the fastening portion of the lid by rotating the lid in one direction of the circumferential directions, the sensor case is held by the support portion and the lid in the up-down direction and is fixed to the oil passage body.

Abstract: An oil sensor attachment structure includes a guide projection disposed on an upper surface of an oil passage body and a sensor case. The guide projection includes a pair of first walls, a pair of first protrusions protruding toward each other, and a second wall. A receiving portion having a first receiving opening is provided between the first walls. The second wall faces the first receiving opening in a second direction with a gap therebetween. The sensor case includes a columnar portion, a flange protruding from the columnar portion, and a facing portion that is connected to the flange and that protrudes to a position above the flange. Each of the first protrusions has a first surface facing toward the other side in the second direction. The facing portion is disposed on the other side of the first surface in the second direction and faces the first surface.

Abstract: In a circuit device, a plurality of protection circuits are disposed between a plurality of first power supply connecting terminals and a first input terminal of a load circuit. A switching element of each of the plurality of protection circuits is connected between a first power supply connecting terminal and a first input terminal, and is turned on when a DC power supply is connected with a normal polarity to the first power supply connecting terminal. Each of the plurality of protection circuits a parasitic diode that is connected in parallel to the switching element between a corresponding first power supply connecting terminal and a first input terminal in a direction where a current having a normal polarity is caused to flow. The reset circuit performs periodically a reset operation of temporarily turning off the switching element.

Abstract: The purpose of the present invention is to provide an inertial force detection device that can more accurately detect faults in a temperature sensor. Provided is an inertial force detection device configured so that in a state where an oscillating body is made to oscillate in a first direction, the amount of displacement when the oscillating body is displaced in a second direction due to the generation of angular velocity is detected as angular velocity, wherein the inertial force detection device has a means for performing control so that the oscillating body enters a state of resonance in the first direction, a temperature detection means for detecting temperature, and a means for detecting faults in the temperature detection means, and outputs a plurality of signals, which indicate the fault detection results of the three means, continuously from a single signal wire.

Abstract: According to an aspect of the present invention, there is provided an oil pressure sensor attaching structure in which a plurality of guide protrusion portions are disposed with a gap in a circumferential direction and surround an oil passage opening portion. The guide protrusion portions have an arc-shaped wall portion and a protrusion portion. An accommodation portion which has an accommodation opening portion opening upward is provided on an inside of the plurality of guide protrusion portions in a radial direction. The sensor case has a columnar portion, a plurality of flange portions, and an annular portion that surrounds the columnar portion. The flange portion is disposed between the upper surface and the protrusion portions in the vertical direction at a first position in the circumferential direction. The annular portion has a first portion and a second portion.

Abstract: A guide protrusion includes first walls protruding upwards from an upper face of a body, facing each other across an opening in a first direction, and first protrusions protruding from each first wall toward the other. A receptive portion between the first walls has a first opening, opening to one side in a second direction orthogonal to the first direction. The sensor case is received from the first opening following the second direction. The guide protrusion has a first movement restricting face facing another side in the second direction. The sensor case includes a columnar portion extending vertically through a gap between the first protrusions, a flange at least partially between the upper face and the first protrusions in the vertical direction, within the receptive portion, and a facing portion on the other side of the first movement restricting face in the second direction, facing the first movement restricting face.

Abstract: In an oil-pressure-sensor attachment structure according to an aspect of the invention, an oil channel body includes a lower body and an upper body arranged at an upper side of the lower body in a superposed manner. The attachment structure includes the upper body, a sensor case, and a connection member including an electrical connection portion that electrically connects an external power supply with a sensor main body. The connection member contacts the upper body from the upper side. The upper body has a through hole in an up-down direction. The sensor case includes a columnar portion that extends in the up-down direction and is inserted into the through hole, a flange portion that protrudes outward in the radial direction from the columnar portion and is arranged to face the lower side of the upper body, and a first hook portion that is hooked to the connection member.

Abstract: In a lighting device, when determining that both of a first measuring value and a second measuring value are not an abnormal value, a controller is configured to control an output of a power converter based on the first and second measuring values. The first measuring value is a temperature inside a main body of the lighting device, sensed by a first temperature sensor. The second measuring value is a temperature of a light source, sensed by a second temperature sensor. When determining that at least one of the first and second measuring values is the abnormal value, the controller is configured to control the output of the power converter to another value that is different from a value of the output set based on the first and second measuring values.

Abstract: An impedance adjustment circuit varies an impedance of a transistor, thereby adjusting an impedance of a current path. A second control circuit controls a drive circuit to turn on or off at least one switch device of the switch devices while the impedance adjustment circuit is increasing the impedance of the current path. The impedance adjustment circuit adjusts the impedance of the current path to the minimum value after the drive circuit switches the at least one switch device from off to on or from on to off.

Abstract: A groove is provided at an outer side of an outer wall of a pressure sensor in a radial direction, and opens at one end side in an axial direction of the pressure sensor. A horizontally extending stopper is provided at an inner wall of a sensor accommodation recessed portion. A fixing portion is provided on the outer side of the outer wall of the pressure sensor in the radial direction, and enters the stopper. The fixing portion protrudes outward in the radial direction from the outer wall of the pressure sensor accommodated in the accommodation recessed portion, and contacts the stopper in the axial direction.

Abstract: A power supply device includes converters, a command circuit, and a setter. The converters correspond to loads. The command circuit controls the converters. The setter sets a magnitude of an output of at least one target converter of the converters in accordance with an output characteristic representing a relationship between an input voltage of the at least one target converter and an output limit value which is an upper limit value of the output from the at least one target converter. The output characteristic is a characteristic that the output limit value decreases as the input voltage lowers when the input voltage is lower than a threshold. The setter varies the threshold of the output characteristic in accordance with an operation status of the converters and sets the magnitude of the output from the at least one target converter in accordance with the output characteristic whose threshold has been varied.

Abstract: A sensor case includes a body portion having a circular horizontal section. An upper body 1 includes an accommodation space 4 having a wall surface having a circular horizontal section, and the body portion is inserted in the accommodation space 4 such that the body portion is capable of rotating about a central axis thereof extending in a vertical direction. A stopper 50 is arranged to project in a horizontal direction in an outer circumferential surface of the body portion. A guide groove 51 is arranged to extend in the vertical direction at the wall surface of the accommodation space 4, and is arranged to allow the stopper 50 to move therein. The upper body 1 includes a restricting portion 52 arranged to restrict a vertical movement of the stopper 50.

Abstract: A lighting device includes a thermal sensor, power converter circuits and a control circuit. The thermal sensor is configured to measure an internal temperature of a case. The power converter circuits are housed in the case and configured to be connected with different types of light sources, respectively. The control circuit is housed in the case and has priorities that are provided with respect to the different types of light sources according to their respective types. The control circuit is configured to, when the internal temperature is greater than a threshold, control the respective outputs of the power converter circuits so as to preferentially decrease an output for a light source corresponding to a first priority.