| 摘要 |
A support bracket for a loudspeaker has an arm (27) mounted for pivotal upwards and downwards movement by means of a cylindrical pivot member (28) fitted between opposite sides (29, 30) of a plate metal housing part (11). The pivot member has a threaded bore therethrough in which is threadedly engaged a shaft (19) provided with a screw-thread (22), a thumb-wheel (26) on the shaft being rotatable to cause rotation of the shaft. As the shaft is otherwise held captive between upper and lower walls of the housing part (11) rotation of the shaft causes the pivot member to move along the shaft. Accordingly the angle of inclination of the arm member relative to the upper wall (12) of the housing can be varied, with a stop (31) at the upper end of the arm member engaging said upper wall. <IMAGE> |
