Supports: cabinet structure – With movable components – Horizontally movable
Reexamination Certificate
1999-08-24
2001-05-15
Wilkens, Janet M. (Department: 3636)
Supports: cabinet structure
With movable components
Horizontally movable
C312S223200
Reexamination Certificate
active
06231144
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to a chassis for an electronic device which readily separates from a casing thereof, and in particular to a drawer type chassis for an electronic device.
2. The Prior Art
Electronic apparatus, such as personal computers, usually comprise a chassis for supporting and fixing components thereof. A casing is mounted to the chassis to shield and cover the components. Some of the conventional casings are made from a single metal plate by stamping or similar mechanical operations whereby the casing is deformable for fitting over the chassis. Mounting/dismounting the casing is inconvenient and laborious. Furthermore, sharp edges of the casing formed during the stamping operation may injure a user trying to mount/dismount the casing.
Other conventional casings are made of several separate panels joined together by releasable engaging means. Examples are disclosed in Taiwan Patent Application Nos. 84207631 and 84215198. Fixing the panels together to form the casing is time-consuming and laborious. Besides, the separate panels may also have sharp edges that could injure a user.
Some computers comprise a removable internal support member which is removably mounted inside an external casing member, such as that disclosed in Taiwan Patent Application No. 84213528. The internal support member is used to support a power supply and/or a disk drive. The support member is usually configured to substantially enclose the power supply/disk drive for electromagnetic interference (EMI) protection. The removable support member provides an efficient way to move the power supply/disk drive in and out of the casing. However, the internal support member is not capable to movably support other components of the computer and may be mechanically unstable.
It is thus desired to provide a removable chassis for an electronic device which overcomes the above problems.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a removable chassis for an electronic device which may be readily and safely separated from a casing thereof.
Another object of the present invention is to provide a removable chassis for an electronic device which stably supports components of the electronic device inside a casing thereof.
A further object of the present invention is to provide a removable chassis for an electronic device which is received in and is in tight engagement with a casing for EMI and RFI protection.
To achieve the above objects, a removable chassis in accordance with the present invention is adapted to be movably received and releasably retained in a casing of an electronic device for supporting components thereof. The casing defines an opening for receiving the chassis and the chassis comprises a panel sized to substantially close the opening. The panel forms opposite side flanges abuttingly engaging with ribs formed inside the casing for EMI protection. A pair of slide plates is movably attached to the side flanges. Each slide plate forms at least a catch engaging with a locking aperture defined in the corresponding rib when the slide plate is moved to a secured position for securing the chassis in the casing. A handle has two free ends pivotally attached to the side flanges. An elongate slot is defined in each free end for movably receiving and drivingly engaging with a driving pin extending from the corresponding slide plate whereby when the handle is rotated, the slide plates are moved toward/away from the secured position for locking/releasing the catches. Each free end of the handle forms a camming surface drivingly engaging with a surface of the casing whereby when the handle is rotated and releases the catches, the camming surface exerts a separation force against the casing for separating the chassis from the casing. A notch is defined in each free end of the handle for engaging with a peg mounted on the corresponding side flange to retain the handle at the secured position.
REFERENCES:
patent: 3120412 (1964-02-01), Caldwell
patent: 3367732 (1968-02-01), Beye
patent: 3467461 (1969-09-01), Hauser
patent: 3521939 (1970-07-01), Fall et al.
patent: 5020151 (1991-05-01), Sampei et al.
patent: 5503440 (1996-04-01), Peccoux
patent: 5761045 (1998-06-01), Olson et al.
patent: 5791753 (1998-08-01), Paquin
Chen Yun-Long
Liu Alvin
Liu Yu-Tai
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Wilkens Janet M.
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