Abstract: Provided is a training box that is a practice tool for learning heart massaging (sternal compression) through experience; is low-cost, small-sized, light weight, and easy to transport; retains durability under repeated use; and on which AED use procedures can also be drilled.

Abstract: In a stationary coil type direct current motor, the motor comprises a case supported by a shaft, and the case is made of magnetic material being high saturation magnetic flux density and high magnetic permeability, whereby magnetic saturation and iron loss can be reduced. The motor is further provided with a plurality of coils mounted on the inner circumference of the case, and the shaft on which a magnet is secured. The magnet is arranged so as to be spaced a predetermined gap from the coils. Furthermore, the case may be a less iron loss material constructed of two layers. A plurality of coils ace mounted on the inner circumference of the case, and the magnet secured to the shaft is spaced a predetermined gap from the coils.