吊り下げ装置

Suspension device

Abstract

PROBLEM TO BE SOLVED: To provide a suspension device by which a depression angle of a speaker suspended from a ceiling is easily adjusted. SOLUTION: A downward channel shaped 1st arm 36 is provided projectingly downward with a 1st stationary member 32 fixed to a ceiling 10. A upward channel shaped 2nd arm 44 inserted in the 1st arm 36 is provided projectingly upward with a 2nd stationary member 42 fixed to an upper face of a speaker 16. A long hole 36 in an oblique direction is provided penetratingly to a lower part of the 1st arm 36 and a circular-arc shaped long hole 36c having a recessed and projection engagement part 36b with plural recessed parts on a circular-arc side toward the long hole 36a and a circular-arc shape around the long hole 36a as a center at an upper part of the long hole 36a is provided penetralingly. Shafts 46, 46 penetrated respectively through the long hole 36a and the circular- arc shaped long hole 36c are fixed to the 2nd arm 44.
(57)【要約】 【課題】 天井10にスピーカ16を吊り下げ、その俯 角を容易に調整できるようにした吊り下げ装置を提供す る。 【解決手段】 天井10に固定される第1固定部材32 に、下に向けてコ字状の第1アーム36を下方に向けて 突設する。スピーカ16の上面に固定される第2固定部 材42に、上に向けてコ字状で第1アーム36内に挿入 される第2アーム44を上方に向けて突設する。第1ア ーム36の下部に斜めに長い長孔36aを貫通穿設する とともに長孔36aの上方部に長孔36a側を中心とす る円弧状で長孔36a側の円弧辺に複数の凹部を有する 凹凸係合部36bを形成した円弧状長孔36cを貫通穿 設する。第2アーム44に、長孔36aと円弧状長孔3 6cにそれぞれ貫通するシャフト46,46を固定す る。

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