Abstract: In a bearing device in which a free end of a shaft body to which a rolling bearing is mounted is bent outward in its radial direction into a shape to be pushed against an end face of an inner ring of the rolling bearing so as to prevent the rolling bearing from falling out, a raceway surface of the inner ring of the rolling bearing is subjected to hardening treatment, and other portion of the inner ring is made of raw material which is not hardened. With this arrangement, the caulked portion formed by the caulking plastically deforms the relatively soft inner peripheral corner of the inner ring and as a result, the caulked portion and the inner peripheral corner are adhered to each other strongly.

Abstract: A plurality of H-shaped notches are formed on an end of a first shielding plate. Each notch has a pair of protrusions. Each protrusion has hooks on both sides. When a coil spring is fitted into each notch, the coil spring is first compressed so that a pitch thereof becomes narrower. Subsequently, the coil spring is fitted into the notch so that the coil spring encompasses the pair of protrusions. Each hook engages with the coil spring received in the notch, thereby preventing the coil spring from dropping out of the notch.

Abstract: An earth connecting member is connected to earth formed on a substrate. The earth connecting member has elasticity and conductivity. The substrate is fixed on a compensating member for compensating for an area of the earth. At this time, the earth connecting member is sandwiched between the substrate and the compensating member. In this structure, the earth connecting member contacts the compensating member, and electrically connects the earth with the compensating member in a low impedance state.

Abstract: A plurality of H-shaped notches are formed on an end of a first shielding plate. Each notch has a pair of protrusions. Each protrusion has hooks on both sides. When a coil spring is fitted into each notch, the coil spring is first compressed so that a pitch thereof becomes narrower. Subsequently, the coil spring is fitted into the notch so that the coil spring encompasses the pair of protrusions. Each hook engages with the coil spring received in the notch, thereby preventing the coil spring from dropping out of the notch.

Abstract: In a bearing device in which a free end of a shaft body to which a rolling bearing is mounted is bent outward in its radial direction into a shape to be pushed against an end face of an inner ring of the rolling bearing so as to prevent the rolling bearing from falling out, a raceway surface of the inner ring of the rolling bearing is subjected to hardening treatment, and other portion of the inner ring is made of row material which is not hardened. With this arrangement, the caulked portion formed by the caulking plastically deforms the relatively soft inner peripheral corner of the inner ring and as a result, the caulked portion and the inner peripheral corner are adhered to each other strongly.

Abstract: To provide a method of pseudogrounding which is capable of protecting against EMI by pseudogrounding communication lines, etc. without necessity of expensive ferrite cores and increasing the number of steps and cost. A wiring which is connected to an LSI (43) on a package and is connected to an external wiring (47) via a connector (461), radio-frequency connected via a capacitance (451, 452) to ta housing (42) in which protection against EMI is achieved so that the radiated noise energy is not higher than EMI restricted value level. This enables said wiring to be pseudogrounded.