| 摘要 |
PURPOSE:To make an electric connection accurately by simplifying the attachment and detachment of the connector of a mobile plug-in telephone set by providing locking pieces to both the sides of its plug. CONSTITUTION:Plug 1, composed of cover 4 and plug body 3 with four plug blades 2 connected to two couples of circuits 8 of master and subordinate telephone sets with external and internal circuits, is fitted to socket 5. Locking pieces 11 project through holes provided at both the sides of cover 4, and cubical inserted boides 16 at their tips of bars 15 extending from the center of pieces 11 to both the sides are rotatably fitted to bearings inside of cover 4. Fitting plug 1 to socket 5 slides bevels 14 at the tips of locking pieces along opening edges of setting holes 25 to open pieces 11 outwards, which are then closed inwards by righting moment of the twisting of bar 15 inserted into hole 25, thereby setting groove 13 to the circumference of setting hole 25. To detach it, pressing pubh-button 28 of piece 11 releases the setting to setting hole 25 and plug 1 is extracted from socket 5. |
