Patent ID: 6954539

Claim:
A speaker comprising a signal connection pin having a columnar shape with substantially the same diameter and a small-diameter portion at a halfway position in an axial direction, a speaker unit electrically connected to the connection pin by a wire, and a cabinet for holding the speaker unit, the signal connection pin and the wire, the signal connection pin being slid over an external TV cabinet while it is connected to a connection jack formed in the TV cabinet so that an engagement claw formed on the cabinet engages with the TV cabinet, and further the speaker being fixed by a screw, wherein a prolonged through hole into which the signal connection pin is inserted and slid is formed in the bottom of the cabinet, one end of the through hole is made a first position which is an opening for preventing the signal connection pin from sliding by means of a seal plate provided on other member in an assembly state, having a diameter wide enough to accept the signal connection pin, the other end of the through hole is made a second position having a slightly small opening diameter so that it is loosely mated with the small-diameter portion, a third position at which the engagement claw is engaged when the signal connection pin is slid from the second position is existent between the first position and the second position, convex portions are formed between the second position and the third position to ensure that the interval between them becomes slightly smaller than the width of the small-diameter portion, and circular holes extending through a rib-shaped projection portion and the bottom are formed in the vicinity of the convex portions at positions where they partially overlap with the rib-shaped projection portion for stabilizing the sliding track of the signal connection pin, formed to surround the through hole.