| 摘要 |
PURPOSE:To obtain a wall mounting device which can be installed in a short time by inserting fittings into a through hole drilled on a back plate of a speaker box with pressure and by abuting compactly its collar in the peripheral of both ends of the through hole. CONSTITUTION:A through hole 3-3 is drilled in the prescribed positon of a back plate 3 of a speaker box. Consequently, when a mounting device 8 is inserted with pressure into said hole 3-3 backward of the back plate 3, a collar 8-3 provided on the bottom is entered into the through hole 3-3 with aid of action of an outer circumference taper while it is bending. Moreover, the fitting device 8 is further inserted with pressure until the collar 8-3 passes through the through hole 3-3 and protrudes the back side of the back plate 3. Then the collar 8-3 is opened due to elasticity of the fitting device 8, and abuts the vicinity of the through hole 3-3 in the back side of the back plate 3. As a result the deterioration of tone quality caused by air leakage never occurs. |
