Hands-free device for operating mobile telephones in motor vehicles with a module-changing mechanism

摘要

The invention discloses a mobile telephone device as part of a hands-free device in a motor vehicle. Known mobile telephone devices can be expanded only to a limited extent in their functions and functionalities by connecting peripheral devices such as for example headphone-microphone combinations. The new mobile telephone device is to be flexibly expandable by components or functionalities. For that purpose a base member ( 1 ) has a receiving means ( 8 ) for receiving a module unit ( 20 ). The module unit ( 20 ) is conductingly connected to the control device by a connecting device ( 21 ) with contact elements at the module side and contact elements at the receiving means side. The module unit ( 20 ) has analog and/or digital function units and/or analog memory units. The module unit can be for example in the form of an expansion card or memory card. By inserting a module unit ( 20 ) into the mobile telephone device it is expanded by the function which is predetermined by the respective module unit ( 20 ). By changing the module units the selection of the available functions of the mobile telephone device can be flexibly altered.