Abstract: The separator plate assembly is capable of forming a variable flow path. The separator plate assembly includes a base plate, a flow path forming block, and a gas flow path. By arranging the flow path forming block on the base plate to form the gas flow path, the precision and productivity of flow path shape processing can be improved, and various gas flow paths can be variably formed on the base plate.

Abstract: Provided is a movement distance measurement apparatus for confirming the operating state of a power transmission device for automobiles, which has removed the effect of temperature, and the movement distance measurement apparatus for confirming the operating state of a power transmission device for automobiles, which has removed the effect of temperature, is configured to measure the movement distance T of the detection target object 20 using a resonance circuit including the sensing coil by using changes in the resonance frequency of the resonance circuit and changes in the output voltage of the resonance circuit according to changes in the distance between the detection target object 20 and the sensing coil, and to be provided with a diode voltage detection unit that separately detects diode voltage included in the output value of the resonance circuit not to be affected by temperature change by removing the diode voltage.

Abstract: An inner plunger of a solenoid coil assembly for a differential clutch of a vehicle contributes to weight lightening and price reduction of a solenoid assembly, provide various shapes, reduce friction against an inner housing, and improve the function of the solenoid assembly. The inner plunger includes an outer wheel combined with a coil bobbin of a solenoid assembly and an inner wheel combined with an inner housing. The inner wheel is molded of insulator synthetic resin with excellent moldability, magnetic metal as the outer wheel is inserted into the outer circumferential surface of the inner wheel made of the synthetic resin, a retaining groove formed in the outer wheel is filled with the synthetic resin of the inner wheel, and a support piece formed on the inner wheel supports the outer wheel.

Abstract: An inner plunger of a solenoid coil assembly for a differential clutch of a vehicle contributes to weight lightening and price reduction of a solenoid assembly, provide various shapes, reduce friction against an inner housing, and improve the function of the solenoid assembly. The inner plunger includes an outer wheel combined with a coil bobbin of a solenoid assembly and an inner wheel combined with an inner housing. The inner wheel is molded of insulator synthetic resin with excellent moldability, magnetic metal as the outer wheel is inserted into the outer circumferential surface of the inner wheel made of the synthetic resin, and an undercut groove is formed on the whole inner surface of the inner wheel made of synthetic resin in order to reduce friction against an inner housing.

Abstract: An inner plunger of a solenoid coil assembly for a differential clutch of a vehicle contributes to weight lightening and price reduction of a solenoid assembly, provide various shapes, reduce friction against an inner housing, and improve the function of the solenoid assembly. The inner plunger includes an outer wheel combined with a coil bobbin of a solenoid assembly and an inner wheel combined with an inner housing. The inner wheel is molded of insulator synthetic resin with excellent moldability, magnetic metal as the outer wheel is inserted into the outer circumferential surface of the inner wheel made of the synthetic resin, and an undercut groove is formed on the whole inner surface of the inner wheel made of synthetic resin in order to reduce friction against an inner housing.

Abstract: An inner plunger of a solenoid coil assembly for a differential clutch of a vehicle contributes to weight lightening and price reduction of a solenoid assembly, provide various shapes, reduce friction against an inner housing, and improve the function of the solenoid assembly. The inner plunger includes an outer wheel combined with a coil bobbin of a solenoid assembly and an inner wheel combined with an inner housing. The inner wheel is molded of insulator synthetic resin with excellent moldability, magnetic metal as the outer wheel is inserted into the outer circumferential surface of the inner wheel made of the synthetic resin, a retaining groove formed in the outer wheel is filled with the synthetic resin of the inner wheel, and a support piece formed on the inner wheel supports the outer wheel.

Abstract: An aluminum coil assembly includes: a steel housing; an aluminum electromagnetic coil electrically connected to the steel housing and having an aluminum lead coil and a copper ground coil connected to the aluminum lead coil by means of soldering or a terminal; and a brass ground ring adapted to be press-fitted to a ring hole formed on the steel housing and having a ground hole formed on the center thereof in such a manner as to insert the copper ground coil connected to the aluminum lead coil thereinto, a cylindrical portion having a cut line adapted to be reduced when coupled to the ring hole of the steel housing to support the copper ground coil inserted into the ground hole, and an inclined portion formed on the underside of the cylindrical portion to allow easy press-fitting to the ring hole formed on the steel housing.

Abstract: An aluminum coil assembly includes: a steel housing; an aluminum electromagnetic coil electrically connected to the steel housing and having an aluminum lead coil and a copper ground coil connected to the aluminum lead coil by means of soldering or a terminal; and a brass ground ring adapted to be press-fitted to a ring hole formed on the steel housing and having a ground hole formed on the center thereof in such a manner as to insert the copper ground coil connected to the aluminum lead coil thereinto, a cylindrical portion having a cut line adapted to be reduced when coupled to the ring hole of the steel housing to support the copper ground coil inserted into the ground hole, and an inclined portion formed on the underside of the cylindrical portion to allow easy press-fitting to the ring hole formed on the steel housing.