| 摘要 |
<p>The invention relates to a spatter and dust proof plastic case to cover plug combinations such as used to connect electrically driven hand tools, vacuum cleaners etcetera, to the mains by means of an extension card. The case prevents the plugs (a) from being disconnected by cable (13) tension during use and - something very dangerous - in sport by infants. The case (1, 5) according to this invention meets also these requirements and can be opened by adults only because this handling needs a certain amount and direction of force to be applied to the fastener. Other cases designed for said purposes and already existing are frequently leaking, especially adjacent to hinge and click fastener system (17). This invention however provides for spatter tight and dust proof protection because of an inventive lapping square gasket (22) on these spots. As long as the case remains closed, sufficient gasket pressure to achieve adequate sealing will be available and maintained by the click fastener (17).</p> |
