Aiwa Co., Ltd.

Satoshi Otomo

Toshio Nakamura

Yukio Matsumoto

A turntable can be manufactured inexpensively using a comparatively inexpensive material and in accordance with ordinary injection molding technique and mold management. A thin-walled cylindrical fixing portion having an insertion hole, into which a rotational shaft is pressed, is formed at a central portion of the turntable. A thin-walled cylindrical reinforcing portion, which is concentric with the fixing portion and has a large diameter, is formed at the outer circumferential side of the fixing portion. Reinforcing rib portions are provided radially between the fixing portion and the reinforcing portion. In this way, deformation due to sink or the like does not occur at the time of injection molding, and extracting force of the rotational shaft which was pressed into the insertion hole can be adjusted to a predetermined value.

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Tokyo, Japan

Satoshi Otomo