Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – For receiving coaxial connector
Reexamination Certificate
2003-07-15
2004-09-14
Luebke, Renee (Department: 2833)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
For receiving coaxial connector
C439S188000, C439S062000, C439S944000
Reexamination Certificate
active
06790047
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a coaxial connector with a switch, such as a receptacle type coaxial connector with a switch. The coaxial connector comprises a normally closed terminal and a common terminal whose respective contact portions contact and move apart from each other in association with the removal and insertion of a mating connector, such as a plug type coaxial connector, as a central conductor and a shell as an exterior conductor. The coaxial connector is mounted on a printed wiring board by soldering connecting portions of the normally closed terminal, the common terminal, and the shell to their respective corresponding lands on the printed wiring board.
2. Description of the Related Art
A common terminal is a type of terminal that can be alternately connected to one or more separate terminals.
A normally closed terminal is a type of terminal that, in its normal, default state, remains connected to another terminal until the normally closed terminal is disconnected from the other terminal, for example, by releasing a switch.
A conventional coaxial connector
300
,
400
with a switch, as shown in FIG.
21
(
b
) and FIG.
22
(
b
), includes a common terminal and a normally closed terminal. When the mating connector
500
is disconnected from the conventional coaxial connector
300
,
400
, the normally closed terminal is in the normal, default state, and the common terminal and the normally closed terminal are connected by the switch. Upon the insertion of the mating connector
500
into the conventional coaxial connector
300
,
400
, the switch is released, thereby disconnecting the common terminal from the normally closed terminal.
Conventionally, a coaxial connector with a switch of this type is formed as a right angle type, in which each of the connecting portions of the normally closed terminal, the common terminal, and the shell is formed into a vertically asymmetric shape. For this reason, for a printed wiring board having a reversed layout, such as a circuit (or element) to be connected to the common terminal and a circuit (or element) to be connected to the normally closed terminal on the printed wiring board, it is necessary to prepare a separate coaxial connector with a switch having the connecting portion of the common terminal and the connecting portion of the normally closed terminal arranged inversely.
For example, given a coaxial connector
300
with a switch as the connector to be mounted in a case where an internal antenna (ANT)
101
and an RF (high-frequency) circuit
102
are laid out on a printed wiring board
100
as shown in FIG.
21
(
b
) and FIG.
23
(
c
), and given a coaxial connector
400
with a switch as the connector to be mounted in a case where an internal ANT
201
and an RF circuit
202
are laid out inversely on a printed wiring board
200
as shown in FIG.
22
(
b
) and FIG.
24
(
c
), then the arrangement of a connecting portion
301
of the normally closed terminal and a connecting portion
302
of the common terminal of the coaxial connector
300
with a switch is reversed with respect to the arrangement of a connecting portion
401
of the normally closed terminal and a connecting portion
402
of the common terminal of the coaxial connector
400
with a switch as shown in FIG.
23
(
b
) and FIG.
24
(
b
), respectively.
In the case shown in FIG.
21
(
b
) and FIG.
23
(
c
), the connecting portion
301
of the normally closed terminal and the connecting portion
302
of the common terminal of the coaxial connector
300
with a switch are placed respectively on lands
103
and
104
for the use of signals formed on the printed wiring board
100
, and connecting portions
303
and
303
of the shell of the coaxial connector
300
with a switch are placed respectively on lands
105
and
105
for the use of grounding formed on the printed wiring board
100
. Each connecting portion is connected to the corresponding land through soldering (not shown). The lands
103
and
104
are connected to the internal ANT
101
and the RF circuit
102
through wiring patterns
106
and
107
, respectively.
As shown in FIG.
21
(
a
) and FIG.
21
(
b
), when a mating connector
500
is not inserted, a contact portion of the common terminal and a contact portion of the normally closed terminal of the coaxial connector
300
with a switch come in elastic contact with each other, whereby the internal ANT
101
is electrically connected to the RF circuit
102
.
When the mating connector
500
is inserted, the contact between the contact portions of the normally closed terminal and the common terminal of the coaxial connector
300
with a switch is released by a contact portion of a normally open terminal (for example, a center pin)
501
of the mating connector
500
, and the contact portion of the normally open terminal
501
is brought into elastic contact with the contact portion of the common terminal of the coaxial connector
300
with a switch, whereby an external ANT (not shown) connected to the end portion of a coaxial cable
600
is electrically connected to the RF circuit
102
.
In short, the ANT to be connected to the RF circuit
102
is switched from the internal ANT
101
to the external ANT. When the mating connector
500
is inserted, the contact portion of a shell (grounded terminal)
502
of the mating connector
500
comes in elastic contact with the contact portion of the shell of the coaxial connector
300
with a switch, whereby an electrical connection is established there between.
In the case shown in FIG.
22
(
b
) and FIG.
24
(
c
), the connecting portion
402
of the common terminal and the connecting portion
401
of the normally closed terminal of the coaxial connector
400
with a switch are placed respectively on lands
204
and
203
for the use of signals formed on the printed wiring board
200
, and connecting portion
403
and
403
of the shell of the coaxial connector
400
with a switch are placed respectively on lands
205
and
205
for the use of grounding formed on the printed wiring board
200
. Each connecting portion is connected to the corresponding land through soldering. The lands
204
and
203
are connected to the RF circuit
202
and the internal ANT
201
through wiring patterns
207
and
206
, respectively.
As shown in FIG.
22
(
a
) and FIG.
22
(
b
), when the mating connector
500
is not inserted, as with the case of FIG.
21
(
a
) and FIG.
21
(
b
), the internal ANT
201
is electrically connected to the RF circuit
202
. When the mating connector
500
is inserted, as with the case of FIG.
21
(
a
) and FIG.
21
(
b
), the ANT to be electrically connected to the RF circuit
202
is switched from the internal ANT
201
to the external ANT.
In the conventional examples shown in FIG.
21
(
a
) through FIG.
24
(
c
), however, the coaxial connectors
300
and
400
with switches are formed as a right angle type, and the connecting portions
301
and
302
and the connecting portions
401
and
402
of the respective terminals and the connecting portions
303
and
303
and the connecting portions
403
and
403
of the respective shells are formed into vertically asymmetric shapes. Hence, onto the printed wiring board
100
on which the internal ANT
101
and the RF circuit
102
are laid out as shown in FIG.
23
(
c
), of the coaxial connectors
300
and
400
with switches, only the coaxial connector
300
with a switch is allowed to mount. Conversely, onto the printed wiring board
200
on which the internal ANT
201
and the RF circuit
202
are laid out as shown in FIG.
24
(
c
), only the other coaxial connector
400
with a switch is allowed to mount.
As has been described, when the internal ANT and the RF circuit laid out on the printed wiring board are arranged inversely, it is necessary to prepare different coaxial connectors with switches that conform to the respective printed wiring boards. This makes it impossible to use a coaxial connector with a switch commonly, which poses a problem that the manufacturing facilit
Darby & Darby
Hammond Briggitte R.
SMK Corporation
LandOfFree
Coaxial connector with switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coaxial connector with switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coaxial connector with switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3196271