BACK REST WITH A SOLENOID-TYPE MASSAGERS OF A VEHICLE FOR SECURING SUFFICIENT SHOCK OF A MASSAGE HEAD WITHOUT APPLYING HEAVY POWER LOAD TO A POWER TERMINAL OF A CIGAR JACK

摘要

PURPOSE: A back rest with a solenoid-type massagers of a vehicle is provided to massage passengers for the predetermined time without stop by minimizing heat generation and to cut off automatically current of a coil if temperature around the coil rises up to a constant value. CONSTITUTION: A back rest installed in a back of a vehicle seat and embedded with a plurality of solenoid-type massagers(100a¯100d) to massage passengers has a control unit(140) for receiving power of a vehicle battery(150) and outputting a constant electric current to coils(107a¯107d) of the massager through a plurality of power output terminals. The control unit outputs pulse current, which is not overlapped to each other, to the coils of each massager. The thick coil with diameter of 1¯2.5 mm is used for the massager to minimize the generation of heat by reducing resistance.