| 摘要 |
A first rotating plate 10 is supported on a planar base plate 4 in such a manner as to be rotatable about a spindle 8. The first rotating plate 10 has a spar gear 30 disposed along its outer periphery to which driving force for rotating the first rotating plate 10 about the spindle 8. The first rotating plate 10 has first attachment parts 40a and 40b on its top surface for attachment to a television receiver. A second rotating plate 42 is detachably attached to the first rotating plate 10. The attachment of the second rotating plate 42 is such as to permit the second rotating plate 42 to slip about the spindle 8 relative to the first rotating plate 10 when force greater than a predetermined magnitude is exerted to the second rotating plate. The second rotating plate 42 has a second attachment part 54 on its top surface for attachment to a television receiver.
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