JPH06333481A - High frequency relay - Google Patents

Abstract

PURPOSE:To enhance high frequency characteritics. CONSTITUTION:An armature block 5 is arranged on the bottom side of a body 1, and a coil block 3, a parmanent megnet 4, and the armature block 5 are arranged in a row up and down and assembled in the box-like body 1 which is opened in a side direction. The fixing part of a movable contact 10 of a contact spring 9 which contacts with and releases from a fixed contact 11 is bent so as to draw downward. By forming in vertical structure in which the fixing contact 11 is positioned in the lower part and drawing downward the movable contact 10, the position of the fixed contact 11 is brought close to the mounting side of a printed circuit board, and the distance between the fixed contact 11 and the printed circuit board is shortened to improve high frequency characteristics.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency relay having a balanced armature structure.

[0002]

2. Description of the Related Art A conventional high-frequency relay having a balanced armature structure is shown in FIGS. In this high frequency relay, a box-shaped body 1 having an open top surface,
A case is composed of a box-shaped cover 2 having an open bottom surface,
A coil is wound around the central piece of the iron core 6 formed in a substantially U-shape in an insulated state to form a coil block 3, and the coil block 3 is laterally oriented in the body 1 with the opening of the iron core 6 laterally. The permanent magnet 4 is housed between the both side pieces 6a of the iron core 6, and the armature block 5 is swingably arranged on the permanent magnet 4 with both ends facing the both side pieces 6a of the iron core 6, respectively. The armature block 5 is swung according to the energized state of.

The armature block 5 is, as shown in FIG.
A structure in which contact springs 9 having movable contacts 10 fixed to both ends are integrally attached, and the movable contacts 10 are brought into and out of contact with the fixed contacts 11 according to the rotation of the armature block 5 to open and close the contacts. It has become. A hinge spring piece 9a, which integrally projects from the contact spring 9 and gives a force for separating the armature block 5 from the iron core 6 when the coil is not energized, projects from one side portion of the center of the armature block 5. .

This high frequency relay comprises a contact terminal 13, a common terminal 14 and a coil terminal 15, a fixed contact 11 is fixed to one end of the contact terminal 13, a hinge spring piece 9a is connected to one end of the common terminal 14, and a coil Is connected to the coil terminal 15. Then, the terminals 13 to 15 are connected to the body 1 respectively.
It is used as a terminal pin when it is mounted on a printed circuit board by inserting the other end portion downward from the body 1 and mounting it on the printed circuit board.

[0005]

In this type of high frequency relay, it is desired to minimize the distance between the printed circuit board and the fixed contact 11 to reduce the leakage of high frequency signals. That is, the high frequency signal leaks from the portion between the printed circuit board of the contact terminal 13 and the fixed contact 11. In the case of the above high frequency relay, the bottom surface of the body 1 becomes the printed circuit board mounting surface.

By the way, in the point that the distance between the printed circuit board and the fixed contact 11 is made as narrow as possible, the armature block 5 and the permanent magnet 4 are connected to the coil block 3 in the high frequency relay.
Since they are arranged side by side, the overall shape is thin,
The distance between the printed circuit board and the fixed contact 11 is narrow. However, in order to reduce leakage of high frequency signals and further improve high frequency characteristics, the printed circuit board and the fixed contact 1
It is difficult for the structure of the high frequency relay described above to make the space between 1 and 1 as narrow as possible. That is, in the case of the above high frequency relay,
Since the movable contact 10 is fixed to the contact spring 9 integrated with the armature 8 and the armature block 5 is mounted on the permanent magnet 4, it is difficult to lower the position of the movable contact 10 as a result. In addition, the position of the fixed contact 11 cannot be brought close to the printed circuit board side.

The present invention has been made in view of the above points, and an object thereof is to provide a high frequency relay capable of improving high frequency characteristics by shortening a distance between a fixed contact and a printed circuit board. It is in.

[0008]

In order to achieve the above-mentioned object, in the invention of claim 1, a box-shaped body which is opened to the side and a central piece of a substantially U-shaped iron core are provided with coils in an insulated state. A coil block formed by winding and housed in the body with the opening direction of the iron core facing downward, a permanent magnet interposed between both side pieces of the iron core, and a contact spring to which a movable contact is fixed are insulated. An armature block that is integrally attached to the armature and that is arranged on the front side of the permanent magnet in the opening direction of the body so that it can swing in the horizontal plane with both ends of the armature facing the two side pieces of the iron core, respectively. A contact terminal having a fixed contact fixed to one end, a common terminal to which a hinge spring piece protruding downward from a contact spring is connected, a coil terminal connected to a coil, and a body incorporating the above-mentioned members. Is wrapped around It has a box-shaped cover with an open bottom surface, and inserts contact terminals, common terminals, and coil terminals into the body by insert molding, and the end exposed from the bottom surface of the body is used as the terminal part when mounting the printed circuit board. It is bent so that the fixed portion of the movable contact of the separated contact spring is moved downward.

According to a second aspect of the present invention, a plurality of the high frequency relays according to the first aspect are arranged side by side on a base, and a plurality of the high frequency relays are integrally covered with a shield case.

[0010]

According to the first aspect of the present invention, by virtue of the above-mentioned structure, the fixed contact is formed in a vertical structure, and the fixed portion of the movable contact of the contact spring which comes into contact with and separates from the fixed contact is arranged downward. By bringing them closer to each other, the fixed contact position is set to the mounting surface side of the printed circuit board as much as possible. Thereby, the distance between the fixed contact and the printed circuit board is further shortened as compared with the conventional one, and the high frequency characteristic is improved.

In the second aspect of the invention, attention is paid to the fact that the high frequency relay of the first aspect does not occupy a planar space even if it is a single unit. It can be stored in a narrow space.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. The high-frequency relay of the present embodiment has a case that is formed by a box-shaped body 1 that is opened to the side and a box-shaped cover 2 that is attached so as to wrap the body 1 and whose bottom surface is opened. The inside of the body 1 is vertically divided by a partition wall 1a. The partition wall 1a is formed laterally from the center in the vertical direction, and is formed in such a manner that the upper and lower spaces are connected at both side portions. The coil block 3 is housed in the upper space inside the body 1 in such a manner that both side pieces 1a of the iron core 1 project into the lower space. The permanent magnet 4 and the armature block 5 are housed in the lower space.

The coil block 3 is integrally molded with a coil bobbin 7 by molding with a synthetic resin from the central piece of the U-shaped iron core 6 to the central portions of both side pieces. Here, a coil (not shown) is wound around the central piece of the coil bobbin 7,
On the collar portions 7a formed at both ends of the coil bobbin 7, connecting pieces 16 for connecting the ends of the coil are planted. The connecting piece 16 is integrally connected to the fixing piece 17 in the collar portion 7 a of the coil bobbin 7.

The permanent magnet 4 is in the shape of a rectangular parallelepiped, both ends and the central part are magnetized with different polarities, and the coil block 3 is formed.
Is interposed between both side pieces 6a of the iron core 6 by adhesion or the like, and is integrally combined with the coil block 3. As shown in FIG. 2, the armature block 5 includes an armature 8 made of a magnetic material, a contact spring 9 made of a conductive material, and a movable contact 10. The armature 8 is provided with a substantially semicircular fulcrum portion 8a which is a swing fulcrum projecting from the center of both sides, and the fulcrum portions 8a are formed on the partition wall 1a of the body 1 and the bottom surface of the body 1 facing the partition wall 1a, respectively. It is fitted in the formed semicircular recess 12 and is rotatably housed in the body 1. The contact spring 9 is divided into left and right parts at the center, and movable contacts 10 are fixed to both ends, and a T-shaped hinge spring piece 9a is integrally projecting from the center. The central portion of the contact spring 9 is molded with synthetic resin,
The synthetic resin portion 18 is integrally attached to the armature 8.

The body 1 is made of synthetic resin and has a contact terminal 1
3, common terminal 14 and coil terminal 15 are inserted. The fixed contact 11 is fixed to the upper end portion of the contact terminal 13, and is inserted so as to expose the fixed contact 11 from the lower portions of the side end surfaces of both side walls. The common terminal 14 has its upper end 14a exposed from the side of the recess 12, and the contact spring 9
Is connected by welding to the hinge spring piece 9a. The coil terminal 15 has its end 15a exposed from the side end surface on the upper space side of both side walls, and is connected to the fixing piece 17 by welding. Each terminal 1
3 to 15 are used as terminal pins when protruding from the lower surface of the body 1 and mounted on the printed board 1.

The high frequency relay excites both side pieces 6a of the iron core 6 as a magnetic pole portion to different poles in accordance with the direction of current flow to the coil, attracts one of both end portions of the armature 8 and the other A magnetomotive force is generated to separate the armature 8 and the armature 8 is rotated about the fulcrum portion 8a. Thus, once the armature 8 is adsorbed to the side piece 6a of the iron core 6, the rotating state of the armature 8 is maintained by the magnetomotive force of the permanent magnet 4 even if the energization of the coil is stopped. Then, when rotating the armature 8 in the opposite direction, the energization direction of the coil may be reversed.
The movable contact 10 fixed to the contact spring 9 that integrally rotates according to the rotation of the armature 8 that is rotated in this manner is
Contact switching is performed by selectively contacting and opening the left and right fixed contacts 11.

Although the above description is for the case where the high frequency relay is constructed as a bistable type, when the energization of the coil is stopped by unbalancing the spring load characteristics of the contact spring 9, a predetermined value is given. Moving contact 10 and fixed contact 1
It may be configured as a monostable type in which the armature 8 is returned and rotated in a state of being in contact with 1. In this embodiment, as shown in FIG. 2, the tip of the contact spring 9 is bent downward so that the movable contact 10 is located as low as possible. The fixed contact 11 is also arranged so as to be located below the body 1 as much as possible according to the position of the movable contact 10. By doing this, the body 1 that becomes the mounting surface of the printed circuit board
The distance between the lower surface of the fixed contact 11 and the fixed contact 11 can be significantly narrowed, so that the high frequency signal hardly leaks from the portion between the fixed contact 11 of the contact terminal 13 and the printed circuit board, and the high frequency characteristic is improved. can do.

By the way, the high-frequency relay described above has a terminal 13
Was mounted on a printed circuit board, the lower ends of the terminals 13 to 15 were bent along the bottom surface of the body 1,
A surface mount type in which the bent portion is inserted into the body 1 and soldering is performed on the mounting surface side of the printed circuit board may be used.
The high frequency relay of this embodiment is used, for example, in the optical communication equipment shown in FIG. In the communication device of FIG. 4, the optically transmitted signal is separated into wavelengths by the optical demultiplexer 20, and the separated optical signals are converted into electric signals by the plurality of optical / electrical converters 21. / A plurality of outputs of the electric converter 21 are distributed by the distributor 22, and the distributed outputs are subjected to signal processing by using a plurality of the high frequency relays 23 of the present invention, and the processed output and the distributor 2
One of the two outputs is combined by the combiner 24 to obtain a desired electric signal.

In such a device, a plurality of high frequency relays 23 are used, and a considerable space is required only for the high frequency relays. In such a case, as shown in FIG. 3B, a plurality of high-frequency relays 23 of the present invention are arranged in parallel on the base substrate 25, and a shield case 26 having an open lower surface covers the high-frequency relays 23. It suffices to use the one which is mounted in such a manner as to integrate a plurality of high frequency relays 23. Figure 3 shows the integrated relay.
It shows in (a). The shield case 26 is provided with a shield wall 26a that separates the storage spaces between the individual high-frequency relays 23 and prevents mutual interference.

Since each high frequency relay 23 which is the basis of this embodiment is formed in a thin vertical type, the high frequency relay 2 is
3 does not take up a flat space by itself. In addition to it,
As described above, if the plurality of high-frequency relays 23 is assembled, the planar occupied space of the plurality of high-frequency relays 23 can be further reduced.

[0021]

As described above, according to the invention of claim 1, a box-shaped body which opens to the side and a core piece of a substantially U-shaped iron core are formed by winding a coil in an insulated state. A coil block housed in the body with the opening direction facing downward, a permanent magnet interposed between both sides of the iron core, and a contact spring to which a movable contact is fixed are integrally attached to an armature in an insulated state. The armature block, which is arranged on the front side of the permanent magnet in the opening direction of the body and is swingable in the horizontal plane, with both ends of the armature facing the both sides of the iron core, respectively, and the fixed contact is fixed at one end. A contact terminal, a common terminal to which a hinge spring piece protruding downward from the contact spring is connected, a coil terminal connected to a coil, and a body in which the above-mentioned members are incorporated are wrapped around the body. With a box-shaped cover with an open bottom Since the contact terminal, the common terminal and the coil terminal are insert-molded in the body and the end exposed from the lower surface of the body is used as the terminal when mounting the printed circuit board, the fixed contact is located in the vertical structure. Moreover, since the fixed part of the movable contact of the contact spring that comes in contact with and separates from the fixed contact is bent downward, the fixed contact position can be as close as possible to the mounting surface side of the printed circuit board. The distance between the printed circuit board and the printed circuit board can be made shorter than before, and high frequency characteristics can be improved.

According to a second aspect of the present invention, a plurality of the high frequency relays according to the first aspect are arranged side by side on a base and a plurality of the high frequency relays are integrally covered with a shield case. A plurality of high-frequency relays can be housed in an extremely narrow space by further integrating a plurality of high-frequency relays according to claim 1 which does not occupy a special space.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of an armature block of the above.

3A and 3B are a perspective view of a relay in which a plurality of high frequency relays are integrated, and an exploded perspective view of the same.

FIG. 4 is a circuit diagram showing an example of a device using the same as above.

FIG. 5 is an exploded perspective view of a conventional high frequency relay.

FIG. 6 is an exploded perspective view seen from a different direction of the above.

FIG. 7 is a perspective view of the armature block of the above.

[Explanation of symbols]

 1 body 2 cover 3 coil block 4 permanent magnet 5 armature block 6 iron core 6a side piece 8 armature 9 contact spring 9a hinge spring piece 10 movable contact 11 fixed contact 13 contact terminal 14 common terminal 15 coil terminal

Claims (2)

[Claims] 1. A box-shaped body having a side opening, and a coil formed in an insulated state around a central piece of a substantially U-shaped iron core, and the coil is housed in the body with the opening direction of the iron core facing downward. A coil block, a permanent magnet interposed between both sides of the iron core, and a contact spring to which a movable contact is fixed are integrally attached to an armature in an insulated state, and both ends of the armature are attached to both sides of the iron core. The armature block is arranged on the front side of the permanent magnet in the opening direction of the body so as to be swingable in the horizontal plane so as to face the one piece, the contact terminal having the fixed contact fixed to one end, and the contact spring downward from the contact spring. It is provided with a common terminal to which the protruding hinge spring piece is connected, a coil terminal to be connected to a coil, and a box-shaped cover with an open lower surface that covers the body in which the above-mentioned members are incorporated. , Contact terminals, common terminals and Insert the terminal on the body by insert molding, and use the end exposed from the bottom of the body as the terminal when mounting the printed circuit board, and bend it so that the fixed part of the movable contact of the contact spring that contacts and separates from the fixed contact is moved downward. A high-frequency relay characterized by comprising 2. A high frequency relay comprising a plurality of the high frequency relays according to claim 1 arranged in parallel on a base, and a shield case integrally attached to each of the high frequency relays.