Liquid crystal cells – elements and systems – Particular structure – Holder – support – frame – or housing
Reexamination Certificate
1998-09-18
2001-02-27
Hjerpe, Richard A. (Department: 2774)
Liquid crystal cells, elements and systems
Particular structure
Holder, support, frame, or housing
C361S689000, C345S087000
Reexamination Certificate
active
06195141
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a hand-held control device having a variety of switches to operate, for instance, an industrial robot.
BACKGROUND ART
A conventional hand-held control device is shown in
FIGS. 5 and 6
.
In those figures, reference numeral
30
designates a casing of resin material such as plastics. The casing
30
comprises a cup-shaped upper casing
30
a
, and a lower casing
30
b
which covers the upper casing
30
a
. Reference numeral
31
designates a cut hole formed in the bottom of the upper casing
30
a
. The cut hole
31
is surrounded by a flange
32
. Reference character
32
a
denotes mounting seats provided at four outer corners of the flange
32
, each of which has a tap hole
32
b
. Reference numeral
33
designates a window of a transparent material such as acrylic material which is bonded to the aforementioned flange
32
. Reference numeral
34
designates a printed circuit board on which electronic devices are mounted so that they are electrically connected to one another. The printed circuit board is secured to mounting seats
32
a
with screws
32
c
. Reference numeral
35
denotes a liquid crystal display plate. The sides of the liquid crystal display plate
35
is secured through a connector
37
to the printed circuit board
34
with support members
36
. Reference numeral
38
designates a control device which is mounted on the printed circuit board
34
, and controls display contents which are to be displayed on the liquid crystal display plate
35
. Reference numeral
39
designates operating switches mounted on the upper casing
30
a
; and
40
, a printed circuit board which is mounted on the upper casing
30
a
and connected to the operating switches
39
.
The above-described hand-held control device suffers from the following difficulties: When the hand-held control device is dropped, or struck against something; that is, when an impact is applied onto it, the casing
30
is bent, and the shock is transmitted to the printed circuit board
34
in the casing
30
. As a result, the shock shifts the connecting position of the printed circuit board
34
and the liquid crystal display plate
35
connected through the connectors
37
thereto, so that the connection of the liquid crystal display plate
35
to the printed circuit board
35
becomes unsatisfactory; that is, no display is made on the liquid crystal display plate
35
.
Accordingly, an object of the present invention is to provide a hand-held control device in which, even if an impact is applied onto the casing, the connecting position of the printed circuit board and the liquid crystal display plate is not shifted, and therefore a display is made on the liquid crystal display plate positively.
DISCLOSURE OF THE INVENTION
What is disclose present invention is a hand-held control device which is electrically connected to a control board with a cable, and is operated at a position far away from the control board. The hand-held control device comprises: a casing having a plurality of operating switches and a cut hole; a transparent window fitted in the cut hole of the casing; a printed circuit board accommodated in the casing and connected to the operating switches; a crystal liquid display plate disposed near the window of the casing and connected to the printed circuit board through a connector, the crystal liquid display plate being fixed with a mounting member so as to the connector is sandwiched between the mounting member and the printed circuit board; and an upper cover and a lower cover which hold the printed circuit board through a buffer member.
Furthermore, the present invention discloses a hand-held control device which is electrically connected to a control board with a cable, and is operated at a position far away from the control board comprising: a casing having a plurality of operating switches and a cut hole; a transparent window fitted in the cut hole of the casing; a liquid crystal display unit accommodated in the casing which includes a liquid crystal display plate and a printed circuit board connected to the operating switches; a buffer member provided both sides of the liquid crystal display unit; and a cover for holding the liquid crystal display unit together with the window through the buffer member, the cover being secured to the casing.
According to the present invention, the printed circuit board
6
is secured to the casings
1
a
and
1
b
through the buffer members
20
. Hence, even if an impact is applied onto the casings
1
a
and
1
b
, no shock is propagated over to the printed circuit board
6
; that is, the printed circuit board
6
and the liquid crystal display plate are not shifted from each other. Accordingly, even if an impact is applied onto the casing, the liquid crystal display plate is less affected thereby; that is, the contents of display can be surely displayed on the liquid crystal display plate
7
.
The liquid crystal display unit
70
is not directly secured to the upper casing, that is, it is held between the cover
22
and the window through the buffer members
25
and
26
. Accordingly, the cost for replacing the liquid crystal display unit
7
is can be reduced, and with one casing, a variety of liquid crystal display units can be used with ease.
REFERENCES:
patent: Re. 32365 (1987-03-01), Sebestyen
patent: 4005388 (1977-01-01), Morley et al.
patent: 5400160 (1995-03-01), Takahashi
patent: 1157935 (1997-08-01), None
patent: 63-64022 (1988-03-01), None
patent: 2-88190 (1990-03-01), None
patent: 4-40221 U (1992-04-01), None
patent: 4-57821 U (1992-05-01), None
patent: 5-66825 (1993-03-01), None
Kawano Takayuki
Oshima Mikio
Ushijima Masafumi
Hjerpe Richard A.
Kabushiki Kaisha Yaskawa Denki
Laneau Ronald
Morgan & Lewis & Bockius, LLP
LandOfFree
Hand-held control 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 Hand-held control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hand-held control device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2593908