Electrical connectors – With circuit component or comprising connector which fully... – Termination circuit
Reexamination Certificate
2003-02-10
2004-09-28
Paumen, Gary (Department: 2833)
Electrical connectors
With circuit component or comprising connector which fully...
Termination circuit
C439S038000
Reexamination Certificate
active
06796840
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to a surface mounting type non-reversible circuit element such as a circulator and an isolator, which is applied to an antenna commonly-using device and the like.
2. Description of the Related Art
A structure of a conventional non-reversible circuit element will now be explained with reference to FIG.
5
. This conventional non-reversible circuit element is constituted by a first “clamp-shaped” yoke
51
, a magnet
52
, a ferrite member
53
, three pieces of center electric conductors
54
, a holding member
55
, and a second “clamp-shaped” yoke
56
. The magnet
52
is arranged within this first yoke
51
. The ferrite member
53
is arranged at a lower portion of this magnet
52
. The three center conductors
54
are made of metal plates, and are mounted on the ferrite member
53
in an interval defined by 120 degrees. Portions of these center conductors
54
are intersected with each other. The holding member
55
holds the ferrite member
53
.
Also, the ferrite member
53
on which the center conductors
54
are mounted is inserted into a hole
55
a
of the holding member
55
. Under such a condition that the magnet
52
is arranged on this ferrite member
55
, the first yoke
51
and the second yoke
56
are employed so as to cover the magnet
52
and the ferrite member
55
along upper/lower directions.
Then, under such a state that the magnet
52
, the ferrite member
53
, and the holding member
55
are sandwiched by the first yoke
51
and the second yoke
56
, the first yoke
51
is coupled to the second yoke
56
, the clamp-shapes of which are alternately arranged, so that a magnetic closed circuit may be formed by the first yoke
51
and the second yoke
56
.
Also, the center conductors
54
are made of thin metal plates, and are constructed in such a manner that terminal portions
54
a
formed at edge portions thereof are projected outwardly from the first yoke
51
and the second yoke
56
.
In the case that such a non-reversible circuit element is assembled in an electronic appliance, the terminal portions
54
a
of the center conductors
54
are wired by employing wire lines.
Since the terminal portions
54
a
of the center conductors
54
are wired by employing the wire lines in the conventional non-reversible circuit element, there is a problem that cumbersome works are necessarily required.
Also, since the magnet
52
is simply placed inside the first yoke
51
, there is a problem that the mounting position of the magnet
52
is fluctuated.
Then, the conventional non-reversible circuit element owns another problem that since the mounting position of the magnet
52
is fluctuated, constant performance of this conventional non-reversible circuit cannot be achieved, and thus, qualities thereof are deteriorated.
SUMMARY OF THE INVENTION
The present invention has been made to solve the above-described problems of the prior art, and therefore, has an object to provide a surface mounting type non-reversible circuit element having superior qualities, the assembling work of which can be simply carried out, while a mounting position of a magnet is made stable.
As a first solving means capable of solving the above-described conventional problems, a surface mounting type non-reversible circuit element is arranged by comprising: a flat-plate-shaped ferrite member; first, second, and third center electric conductors which are located on the ferrite member, and are provided on different surfaces along upper/lower directions while sandwiching a dielectric substance, portions of which are intersected to each other along the upper/lower direction; a magnet arranged on the first, second, and third center electric conductors; a first yoke arranged in such a manner that the first yoke covers the magnet; and a second yoke which is arranged on the side of a lower surface of the ferrite member, and constitutes a magnetic closed circuit in combination with the first yoke; in which a supporting member on which a plurality of terminal members made of a metal material are mounted is provided with the first yoke; and the terminal members own contact portions which are made in contact to the terminal portions of the first, second, third center electric conductors; and connection portions which are exposed from a lower surface of the supporting member and whose surfaces are located at the same surface as the lower surface of the second yoke.
Also, as a second solving means, the surface mounting type non-reversible circuit element is arranged by that the non-reversible circuit element is further comprised of a chip type capacitor having first and second electrode portions which are located opposite to each other while sandwiching therebetween an insulating member; the first electrode portion is put on a bottom plate of the second yoke so as to be mounted on the bottom plate, the terminal portions of the center conductors are connected onto the second electrode portion, and the contact portions of the terminal members are made in contact with the terminal portions of the center conductors which are located over the second electrode portion.
Also, as a third solving means, the surface mounting type non-reversible circuit element is arranged by that positioning of the magnet is performed by the supporting member.
Also, as a fourth solving means, the surface mounting type non-reversible circuit element is arranged by that the supporting member is formed with the first yoke in an integral body by way of a molding process operation.
Also, as a fifth solving means, the surface mounting type non-reversible circuit element is arranged by that the terminal member is made of a metal material having an elastic characteristic.
Also, as a sixth solving means, the surface mounting type non-reversible circuit element is arranged by that the terminal member is embedded in the supporting member by way of a molding process operation so as to be mounted thereon.
Also, as a seventh solving means, the surface mounting type non-reversible circuit element is arranged by that a bent portion of the terminal member provided at one end of the connection portion is arranged under such a condition that the bent portion is exposed from a side surface of the supporting member.
REFERENCES:
patent: 6042385 (2000-03-01), Watanabe et al.
patent: 6086422 (2000-07-01), Glynn
patent: 6174203 (2001-01-01), Asao
patent: 6422901 (2002-07-01), Belopolsky
patent: 6437675 (2002-08-01), Chu
patent: 6467165 (2002-10-01), Glynn
patent: 6527594 (2003-03-01), Korsunsky et al.
patent: 6537110 (2003-03-01), Korsunsky et al.
patent: H10-242713 (1998-09-01), None
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Paumen Gary
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