Abstract: An assembling structure is provided which is capable of greatly reducing the material cost, is easy-to-assemble, and can be made smaller. The sensor body is provided on a lower face with a protrusion, which comes into contact with an upper face of the busbar when the sensor body is mounted on the busbar. The busbar is provided with a through-hole passing through the busbar in a vertical direction. A leading end of the protrusion, which passes through the through-hole when the sensor body is mounted on the busbar, is heat-fused and adheres to the circumference of the through-hole.

Abstract: A liquid level detecting apparatus includes a liquid level sensor of a variable resistance type which includes a sliding contact and a resistor, and which detects a resistance change corresponding to a change of a liquid level of a liquid in a tank and outputs a detection signal based on the change of the liquid level when the liquid level sensor is energized and a controlling unit which controls to supply energization pulses periodically to the liquid level sensor, and controls a displaying portion to display a remaining amount of the liquid in the tank, on the basis of the detection signal output from the liquid level sensor. The controlling unit changes a number of the energization pulses supplied to the liquid level sensor in a predetermined time, on the basis of the detection signal output from the liquid level sensor.

Abstract: A current sensor for measuring a current supplied to a conductor includes a case which accommodates an electrical parts therein, and a cover attached to the case. A groove part is provided on an outer surface of at least one of the case and the cover to allow the conductor to pass through the groove part. When the cover is attached to the case, the conductor arranged on the groove part is sandwiched between the case and the cover. A width of the groove part becomes narrower toward an interior side thereof.

Abstract: An assembling structure of a current detection apparatus includes: a bus bar; a sensor main body having a magnetism detection element which detects a magnetism generated from the bus bar; a housing having a sensor compartment which accommodates the sensor main body; a magnetism shield member mounted externally on the housing; a cover that holds the bus bar and the magnetism shield member by the at least part of the upper surface of the cover and the lower surface of the housing therebetween; a projecting portion formed on the cover, which projects upwards from the upper surface of the cover; a hole formed in the bus bar, through which the projecting portion of the cover is inserted; and a hole formed in the lower surface of the housing, which is adapted to fit on the projecting portion which passes through the hole in the bus bar.

Abstract: In a resistance plate, a first slide portion includes a plurality of first conductive segments arranged at intervals generally in a direction of sliding movement of a sliding arm, the adjacent first conductive segments being connected together via a resistor. A first conducting path 13 extends between the first slide portion and a first end land to electrically connect them together, the first end land being provided for detecting a quantity of electricity appearing according to the positions of the first conductive segment and a second conductive segment which are held in contact with the sliding arm. A protector is formed on the first conducting path to cover this first conducting path. The protector and the resistor are made of the same material.

Abstract: A liquid level detecting apparatus includes a resistance plate which includes an insulating plate and a resistor mounted on the insulating plate, the resistor having a plurality of conductive segments, and a sliding body which has a contact for contacting on the conductive segments, and the contact sliding over the conductive segments in accordance with a change of a liquid level of a liquid. At least a surface of a constituent member of the sliding body except for the contact is comprised of a material having a corrosion resistance to the liquid.

Abstract: A liquid level detecting apparatus includes a liquid level sensor of a variable resistance type which includes a sliding contact and a resistor, and which detects a resistance change corresponding to a change of a liquid level of a liquid in a tank and outputs a detection signal based on the change of the liquid level when the liquid level sensor is energized and a controlling unit which controls to supply energization pulses periodically to the liquid level sensor, and controls a displaying portion to display a remaining amount of the liquid in the tank, on the basis of the detection signal output from the liquid level sensor. The controlling unit changes a number of the energization pulses supplied to the liquid level sensor in a predetermined time, on the basis of the detection signal output from the liquid level sensor.

Abstract: A liquid level detection device includes a sensor provided in a container which stores a liquid therein and having a variable resistance which changes a resistance value in association with a change of liquid level to output a voltage signal according to the resistance value of the variable resistance when a voltage is applied thereto, and a power supply circuit applying the voltage to the sensor intermittently on a predetermined cycle. A conducting time during which the power supply circuit applies the voltage to the sensor is equal to or less than 40 ms per cycle.

Abstract: A liquid level detection apparatus includes a resistance plate which has a conducting pattern formed on a board, the conducting pattern including a first slide portion, a second slide portion, a plus electrode electrically connected to the first slide portion, and a minus electrode electrically connected to the second slide portion, a float which moves in accordance with a change of a liquid level, a float arm connected to the float, a sliding arm which slides over the resistance plate in accordance with a pivotal movement of the float arm, a plus connection terminal connected to the plus electrode, a minus connection terminal connected to the minus electrode, and a protective layer formed on the plus connection terminal so as to cover the plus connection terminal.

Abstract: In a resistance plate, a first slide portion includes a plurality of first conductive segments arranged at intervals generally in a direction of sliding movement of a sliding arm, the adjacent first conductive segments being connected together via a resistor. A first conducting path 13 extends between the first slide portion and a first end land to electrically connect them together, the first end land being provided for detecting a quantity of electricity appearing according to the positions of the first conductive segment and a second conductive segment which are held in contact with the sliding arm. A protector is formed on the first conducting path to cover this first conducting path. The protector and the resistor are made of the same material.