| 摘要 |
PURPOSE: A disc type eccentric rotor and a flat type vibrator motor having the rotor are provided to appropriately generate vibrations by means of a centrifugal force with high efficiency and be easily installed. CONSTITUTION: An end portion connection land(1d) and start portion connection lands(1e,1f) of the air-core coils(1b) are formed at the outer circumferential portion of the opposite surface of the commutator member(1). Here, the start portion of the printed wiring type air-core coil(1b) is directly connected to the commutator land segment. Partition walls, in which land leads are installed, are formed at positions respectively 120° apart from the centroid of the printed wiring type air-core coil(1b). Wound type air-core coil arrangement guide apertures are arranged at both sides of each of the partition walls. Three reinforced holes(1j) formed by punching at positions which are found symmetrically on a circular arc excluding the printed wiring type air-core coil(1b), are connected to the wound type air-core coil arrangement guide apertures by an insertion pass portion(1h) for reinforcement thereof. The through hole is formed to have a slightly greater diameter so as to function as a reinforcement hole.
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