An attempt is made to miniaturize and reduce a thickness of a folding type portable terminal.There are provided a turning shaft member 51 having a shaft section 58; a friction member 54; an urging member 55; and a bearing member 52 including an accommodation section 63 for accommodating the friction member 54 and the urging member 55 and an insertion hole 62 which is in mutual communication with the accommodation section 63 and which retains the shaft section 58 in a turnable manner. The urging member 55 urges the friction member 54 when predetermined deflection is imparted to the urging member 55. The urged friction member 54 contacts an outer periphery of the shaft section 58 and also urges the outer periphery of the shaft section 58. The shaft section 58 of the turning shaft member 51 is configured so as to turn while generating sliding friction against the friction member 54 and the bearing member 52.