Abstract: A battery packaging body allows, while infants can hardly take out a battery, a person other than infants can take out the battery. A battery packaging body includes a mount, and a blister cover which can accommodate a battery between the same and the mount. The mount and the blister cover are fixed to each other at least at their peripheral edge parts. The blister cover has a non-fixed part which is, at a position continuous to an accommodating projection, not fixed to the mount, and a first rib part provided along the accommodating projection. The non-fixed part is positioned on the opposite side to the first rib part across the accommodating projection and constitutes a part of a cuttable region P. The first rib part extends in a direction crossing a direction in which the non-fixed part, the accommodating projection and the first rib part line up.

Abstract: A battery packaging body allows, while infants can hardly take out a battery, a person other than infants can take out the battery. A battery packaging body includes a mount, and a blister cover which can accommodate a battery between the same and the mount. The mount and the blister cover are fixed to each other at least at their peripheral edge parts. The blister cover has a non-fixed part which is, at a position continuous to an accommodating projection, not fixed to the mount, and a first rib part provided along the accommodating projection. The non-fixed part is positioned on the opposite side to the first rib part across the accommodating projection and constitutes a part of a cuttable region P. The first rib part extends in a direction crossing a direction in which the non-fixed part, the accommodating projection and the first rib part line up.

Abstract: A spindle motor as a heating element and a spindle head having a spindle that is driven by the spindle motor are coupled to each other by a cooling flange. The cooling flange is provided with a cooling passage, the cross-sectional area of which gradually increases with distance from its gas inlet toward its gas outlet. When a high-pressure gas is injected into the cooling passage through the gas inlet, it is adiabatically expanded and cooled by the cooling passage having the gradually increasing cross-sectional area. Thus, the cooling flange restrains heat generated from the spindle motor from being transmitted to the spindle head.

Abstract: A spindle motor as a heating element and a spindle head having a spindle that is driven by the spindle motor are coupled to each other by a cooling flange. The cooling flange is provided with a cooling passage, the cross-sectional area of which gradually increases with distance from its gas inlet toward its gas outlet. When a high-pressure gas is injected into the cooling passage through the gas inlet, it is adiabatically expanded and cooled by the cooling passage having the gradually increasing cross-sectional area. Thus, the cooling flange restrains heat generated from the spindle motor from being transmitted to the spindle head.