Portable electronic device

Details Portable electronic device Portable electronic device

2000-08-24

2002-04-09

Gandhi, Jayprakash N. (Department: 2841)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S737000, C361S752000, C455S090300

Reexamination Certificate

active

06370038

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to portable electronic devices such as portable telephones, and more particularly to a construction of two circuit boards being secured in the interior of a casing.
BACKGROUND OF THE INVENTION
With reference to
FIG. 4
, conventional portable telephones comprise a casing
1
formed by a front case
11
and a rear case
12
. A display
13
and a plurality of manual keys
14
including a seesaw key
15
are provided on the front case
11
. The casing
1
has a first circuit board
3
disposed in its interior as shown in FIG.
5
. Arranged on the first circuit board
3
are a key input device
4
to be depressed by the manual key
14
, the display
13
, a high-frequency circuit module
50
, and a vibrator
2
comprising a motor
22
and an eccentric weight
21
attached to the output shaft of the motor for notifying the user of incoming calls, etc.
The high-frequency circuit module
50
comprises, as illustrated in
FIG. 6
, a chassis
51
having a surface of resin body processed with electroless plating, a second circuit board
32
fixed to the chassis
51
with screws fastened, and a shield case
55
attached to the second circuit board
32
. A pair of arms
52
,
52
extending on the opposite ends of the chassis
51
are engaged with the opposite ends of the first circuit board
3
, having the high-frequency circuit module
50
attached to the first circuit board
3
. A male connector
61
attached to the rear surface of the first circuit board
3
and a female connector
62
attached to the surface of the second circuit board
32
fit to each other, having the both boards
3
,
32
electrically connected to each other.
With the conventional portable telephones, when external impulsive force is exerted on the casing
1
, the first circuit board
3
and the high-frequency circuit module
50
must be prevented from moving in the casing
1
. Such a construction, thus, is adopted that the opposite ends
31
,
31
of the first circuit board
3
are engaged with ribs
10
,
10
projecting inwardly of the casing
1
, to prevent the first circuit board
3
from moving by the support of the interior of the casing
1
.
However, with the above construction, a pair of arms
52
,
52
extending on the chassis
51
are merely in engagement with opposite ends of the first circuit board
3
, only to have the high-frequency circuit module
50
attached to the first circuit board
3
. The high-frequency circuit module
50
, thus, is not connected to the first circuit board
3
with the sufficient connecting strength to cause a relative shift between the first circuit board
3
and the second circuit board
32
in the event that external impulsive force is exerted. As a result, the problems are encountered including a male connector
61
and a female connector
62
are removed from the board or the portion wherein the male connector
61
is engaged with the female connector
62
is impaired.
SUMMARY OF THE INVENTION
An object of the present invention is to provide portable electronic devices comprising a first circuit board
3
and a second circuit board
32
disposed in an interior of a casing
1
, a male connector
61
attached to one circuit board and a female connector
62
attached to the other board engaged with each other, and to prevent the male connector
61
and the female connector
62
from being impaired resulting from the exertion of the impulsive force.
The present invention provides a portable electronic device comprising the first circuit board
3
disposed in the interior of the casing
1
, a circuit module
5
attached to the first circuit board
3
. The circuit module
5
includes a chassis
51
engaged with the first circuit board
3
and the second circuit board
32
secured to the chassis
51
. The male connector
61
attached to one circuit board and the female connector
62
attached to the other circuit board are engaged with each other to have the both circuit boards
3
,
32
electrically connected.
On respective ends of chassis
51
, a pair of arms
52
,
52
holds and grips the respective end faces of the first circuit board
3
. The pair of arms
52
,
52
extends toward the first circuit board
3
. Each upper end of the arms
52
,
52
is held between an end face of the first circuit board
3
and an inner face of the casing
1
.
With the portable electronic device, the invention not only adopts the construction that the chassis
51
of the circuit module
5
is engaged with the first circuit board
3
, but also adopts the construction that the upper end of the pair of arms
52
,
52
extending from the chassis
51
is held between an end face of the first circuit board
3
and an inner face of the casing
1
. Therefore, the chassis
51
is connected to the first circuit board
3
with given more improved strength than in the prior art.
Accordingly, even if external impulsive force acts on the casing
1
, there is no likelihood that relative shift occurs between the first circuit board
3
and the second circuit board
32
. This prevents the male connector
61
and the female connector
62
from being impaired.
Stated specifically, the arm
52
of the chassis
51
contacts with the end face of the first circuit board
3
and with the inner face of the casing
1
on a plane including the first circuit board
3
. With the specific construction, when external impulsive force acts on the casing, the force with which the first circuit board
3
presses the arm
52
and the force with which the inner face of the casing
1
receives the arm
52
are opposed on a same line, so that the impulsive force acts as force to compress the arm
52
, causing no moment. As a result, the sufficient endurance is achieved in the event of the impulsive force exerted.
Further stated specifically, upper ends of a pair of arms
52
,
52
extending from the chassis
51
are engaged with the respective ends of the first circuit board
3
, to have the circuit module
5
attached to the first circuit board
3
. According to the specific construction, the pair of arms
52
,
52
extending from the chassis
51
also works as a construction to have the chassis
51
engaged with the first circuit board
3
, giving the device simplified construction.
As stated above, the present invention provides the portable electronic device comprising the circuit module
5
which is connected to the first circuit board
3
with enough strength. Consequently, even if external impulsive force is exerted, the relative shift between the first circuit board
3
and the second circuit board
32
is avoided, to prevent the male connector
61
and the female connector
62
from being impaired.


REFERENCES:
patent: 6011699 (2000-01-01), Murray et al.
patent: 6049725 (2000-04-01), Emmert et al.
patent: 6064894 (2000-05-01), Zurek et al.

Affiliated with

Also associated with

Rating

Portable electronic device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable electronic device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable electronic device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2857883