| 摘要 |
A handheld scanning device, such as a pistol-type bar code reader, has a housing (4) having an outer shell (10) defining an interior space. An outer opening (14) in the shell communicates with the space. A tray (40) has an inner portion and an outer closure portion with a sealing surface. The inner portion is sized and shaped to be introducible into and removable from the interior space through the opening. The outer closure portion is dimensioned to close the opening when the inner portion is in the space. The sealing surface (62) sealingly engages an outer surface of the shell to protect the interior space and a component mounted on the inner portion from environmental contamination. The tray is easily removable from the device housing, and the component is easily demountable, to allow for quick and easy replacement of the component and/or tray. The closure portion may be provided with an access opening (50) for a memory card to provide an interface between the component and other elements of the device carried by the housing.
|
