Telecommunications – Transmitter and receiver at same station – Having particular housing or support of a transceiver
Reexamination Certificate
1999-02-04
2001-05-08
Bost, Dwayne (Department: 2681)
Telecommunications
Transmitter and receiver at same station
Having particular housing or support of a transceiver
C455S550100, C455S566000, C455S347000, C379S433020, C379S429000, C379S368000
Reexamination Certificate
active
06229994
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a fitting device for separate elements of a mobile telephone handset, formed by a mat of elastic material comprising at least a keyboard and a housing for a display panel.
The invention also relates to a mobile telephone handset having such a fitting device.
The mobile telephone is an apparatus that, without being particularly fragile, drops more often than other electronic apparatus because in most cases it is manipulated with one hand. Hence the increasing tendency to provide the mobile telephone with elastic fitting elements inside the housing which in case of shock act as shock absorbers for the elements contained in the housing.
Besides, such apparatus have separate elements at the front that capture or emit information such as the microphone, the keyboard, the display panel and the earphone. When the apparatus is being assembled, the separate elements are to be mutually positioned with rather much precision because they are to correspond with openings made in the front face of the housing. The fitting of these elements in an elastic mat provides the desired mutual positioning that facilitates the mounting.
BACKGROUND OF THE INVENTION
Such an elastic mat comprising the separate front elements is notably known from European patent application EP-A 0 702 478. The mat of flexible material is fastened by its curved ends to the ends of a printed circuit. Furthermore, besides an orifice for accommodating the microphone and passing the keyboard keys through, this mat comprises a first housing for the display panel and a second housing for the earphone, these housings having curved walls which ensure that these two elements are kept in place during mounting, and the back part forming a frame of the walls of these housings ensures a proper elastic fitting of the elements against the inside part of the front half of the body.
Such a mat indeed provides the above advantages of ease of mounting and resistance to shock. However, such a mat made by injection molding is hard to realize because the back parts for keeping the display panel, the earphone and the assembly on the printed circuit board in place imply the use of inserts which co-operate with the walls of the mold. Putting in these inserts and extracting them afterwards with each molding operation complicate this operation and increase its duration, which leads to an increase of the unit cost of each manufactured mat, it being understood that the cost of elastomer material used is low relative to that of the actual molding operation.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an elastic mat of a flexible material for fitting in separate mobile telephone elements obtained by molding, without the necessity of inserts.
According to the invention, this object is achieved and the drawbacks of the prior art are mitigated thanks to the fact that the fitting device defined in the opening paragraph is characterized in that said mat further includes an extension part beyond said housing, formed by a locking frame which can be folded onto said housing, and has means for fastening it in folded position.
The display panel locked into said housing may thus be positioned exactly relative to the keys of the keyboard and a flexible fitting in forward direction of this panel is ensured after separate elements are mounted against the front half of the body.
It is another object of the invention to enable a correct positioning of the flat connection cable which connects the display panel to the other components of the apparatus.
For this purpose, an advantageous embodiment of the invention is characterized in that said mat further includes between said housing and said extension part a slimmer intermediate part forming a hinge and having a slot intended for passing the flat connection cable of said display panel through.
Beyond said slot, the flat connection cable is connected to conducting tracks of the printed circuit which supports the mat of plastic material.
REFERENCES:
patent: 4872551 (1989-10-01), Theros
patent: 5555550 (1996-09-01), Kaschke
patent: 5584387 (1996-12-01), Grant
patent: 5850914 (1998-12-01), Patterson
patent: 6041120 (2000-03-01), Olkkola
patent: 0702478A2 (1996-03-01), None
Bost Dwayne
Halajian Dicran
Persino Raymond B.
U.S. Philips Corporation
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