JPH1167040A - Electromagnetic relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic relay, for reducing the consumed quantity of an expensive glass-fluorine substrate to achieve cost down. SOLUTION: This relay is equipped with a relay main body 1 provided with a contact part driven by an electromagnetic part having a coil to open/close a high-frequency signal, a connector 2 connected to the high-frequency circuit of an electric apparatus, and a printed circuit board 3, wherein connectors 2 positioned on one end part 3a side, and a relay main body 1 are mounted, high-frequency circuit patterns 32c are provided on a board surface, and the connectors 2 and the contact part are electrically connected to the pattern 32c. In this case, the printed circuit board 3 is provided with a first printed circuit board 31 positioned on another end part 3b side, and a second printed circuit board 32 providing at least the patterns 32c, and having smaller dielectric loss compared with the first printed circuit board 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay used for a high-frequency circuit.

[0002]

2. Description of the Related Art Conventionally, as this kind of electromagnetic relay, a relay main body provided with a contact portion which is driven by an electromagnet portion having a coil to open and close a high-frequency signal, a connector connected to a high-frequency circuit of an electric device, A configuration in which a connector and a relay body located on one end side are mounted, and a high-frequency circuit pattern is provided on a substrate surface, and a printed circuit board in which the connector and the contact portion are electrically connected to the high-frequency circuit pattern. Exists.

More specifically, the printed circuit board is formed of one sheet without being divided, so that a high-frequency signal is not attenuated when transmitted to a high-frequency circuit pattern, or heat generated by the high-frequency signal is reduced. A material having a small dielectric loss is used.

[0004]

In the above-mentioned conventional electromagnetic relay, a high-frequency signal whose contact portion is opened and closed is prevented by using a printed circuit board having a small dielectric loss to prevent attenuation or heat generation of the high-frequency signal. Via the pattern and the connector, it can be transmitted to a high-frequency circuit of an electric device connected to the connector.

[0005] However, the inventor disclosed in Japanese Patent Application No. 8-272.
As filed in Japanese Patent Application No. 636, in order to prevent attenuation of a high-frequency signal or heat generation of a printed circuit board, a glass fluorine substrate having a small dielectric loss and good high-frequency characteristics is used as a printed circuit board. On the other hand, a glass epoxy substrate or a paper epoxy substrate is inexpensive as compared with a glass fluorine substrate, but has a large dielectric loss. Therefore, despite being expensive, a glass fluorine substrate having a small dielectric loss has to be used as a printed circuit board, which has been one of the factors of high cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an electromagnetic relay capable of achieving cost reduction by reducing the amount of expensive glass fluorine substrate used. .

[0007]

In order to solve the above-mentioned problem, the present invention is directed to a relay body having a contact portion which is driven by an electromagnet portion having a coil to open and close a high-frequency signal, A connector to be connected to the high-frequency circuit of the electrical equipment, a connector and a relay body located on one end side are mounted, and a high-frequency circuit pattern is provided on the board surface, and the connector and the contact portion are electrically connected to the high-frequency circuit pattern. The printed circuit board, wherein the printed circuit board is located on the other end side.
A printed circuit board, and a second circuit board provided with at least the high-frequency circuit pattern and having a dielectric loss smaller than that of the first printed circuit board.
It consists of a printed circuit board.

According to a second aspect of the present invention, in the first aspect, the relay main body has a coil terminal connected to the coil and a contact terminal located on the opposite side of the coil terminal and connected to the contact portion. The coil terminals are arranged side by side, and the coil terminals are mounted on the first printed circuit board, and the contact terminals are mounted on the second printed circuit board, respectively.

According to a third aspect of the present invention, in the first or second aspect, the control circuit wiring pattern connected to the control integrated circuit section for controlling the electromagnet section of the relay main body is the first pattern. It is configured to be formed on a printed circuit board.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a relay main body. An electromagnet section (not shown) mounted on a base (not shown) and having a coil (not shown) and a contact section (not shown) are housed in a case 1a. It has a configuration. Two coil terminals 1 connected to a coil
1, three contact terminals 12 located on the opposite side of the coil terminal 11 and electrically connected to the contact portions, and four ground terminals (not shown) are located on both sides and are arranged side by side. Once installed, it is derived from the base. Here, the contact terminal 12 is composed of three parts: a common terminal, a normally open terminal, and a normally closed terminal, and the contact part is driven by the electromagnet part, and the common terminal and the normally closed terminal, and the common terminal and the normally open terminal are connected to each other. Open and close high frequency signals between

Reference numeral 2 denotes a connector having a cylindrical central conductor, an outer conductor formed coaxially in a cylindrical shape and grounded,
The four ground terminals 21 and the signal terminals 22 electrically connected to the center conductor are led out. Then, it is mounted in a state where it is positioned on one end 3a side of the printed circuit board 3 described later, and a part is formed on an outer surface of the body 23 covered with the relay body 1 through a through hole formed on a side surface of the case body 2a. It protrudes and is connected to the high frequency circuit of the electric device. In addition, three connectors are provided, and the connectors 2 are arranged in a line so as to be exposed on one surface of the body 23, and are in contact with the case body 2a because the outer conductor is on the ground side.

A printed circuit board 3 has one end 3a and the other end 3b. The first printed circuit board 31 is located on the other end 3b side with respect to the line L in FIG.
and the second printed circuit board 32 located on the side a.
The first printed circuit board 31 is formed in a thin plate shape, and is made of an inexpensive glass epoxy paper or paper epoxy board in which glass fiber or paper is impregnated with an epoxy resin, and a coil terminal insertion hole 31a for inserting the coil terminal 11 of the relay body 1.
Are provided. Further, a control circuit wiring pattern 31b which surrounds the coil terminal insertion hole 31a and drives the electromagnet portion of the relay main body 1 to open and close the contact portion is provided.
It is formed on one surface 3c side of the substrate surface. Here, since the glass epoxy board or the paper epoxy board can easily form a wiring pattern with high dimensional accuracy, a fine and precise control circuit wiring pattern 31b can be easily formed.

The second printed circuit board 32 is formed in a thin plate shape, and is made of an expensive glass fluorine substrate in which glass fiber is impregnated with a fluorine resin such as Teflon. Good,
Three connectors 2 are arranged side by side on one end 3a side.

A contact terminal insertion hole 32a into which the contact terminal 12 of the relay body 1 is inserted, and the signal terminal 22 of the connector 2
Are provided with three signal terminal insertion holes 32b into which
The high-frequency circuit pattern 32c surrounding the contact terminal insertion hole 32a and the signal terminal insertion hole 32b is formed on one surface 3c of the substrate surface.
Side, and electrically connects the contact portion and the signal terminal 22. Then, three high-frequency circuit patterns 32c are provided, and one at the center is formed in a substantially I-shape, and two on both sides are formed in a substantially L-shape.

Also, four ground terminal insertion holes 32d are provided corresponding to each connector 2, and the ground terminal 21 of each connector 2 is inserted. Further, four ground terminal insertion holes 32e are provided, into which the ground terminals of the relay main body 1 are inserted. A ground pattern 32f surrounding each ground terminal insertion hole 32d and each ground terminal insertion hole 32e is
Except for the high-frequency circuit pattern 32c, it is formed on one surface 3c of the substrate surface over substantially the entire other portion. That is, the ground pattern 32f is formed so as to surround the high-frequency circuit pattern 32c over the entire circumference, thereby reducing the influence of high-frequency signal radiation and external noise.

Reference numeral 4 denotes a control integrated circuit portion, which is mounted on the other surface 3d side substrate surface of the first printed circuit board 31 and is connected to one surface 3 of the substrate surface.
Connected to the control circuit wiring pattern 31b formed on the c side, the coil of the relay main body 1 is excited to drive and control the electromagnet section to open and close the contact section. The resin cover 5 is formed in a flat plate shape with resin, and is provided with an insertion hole.

Here, the relay body 1 and the connector 2 are mounted on the printed circuit board 3 on one surface 3c side by soldering, respectively. That is, the relay main body 1 has two coil terminals 11.
Is inserted into the coil terminal insertion hole 31a of the first printed circuit board 31 and soldered to form the control circuit wiring pattern 31b.
Connect with

The three contact terminals 12 are inserted into the contact terminal insertion holes 32a of the second printed circuit board 32 and soldered, and the common terminal is connected to the central high-frequency circuit pattern 32c.
The normally open terminal and the normally closed terminal are respectively connected to the high frequency circuit patterns 32c on both sides. Also, four ground terminals are provided in the ground terminal insertion holes 32e of the second printed circuit board 32.
And soldered to connect to the ground pattern 32f. In this way, the first printed circuit board 31 and the second printed circuit board 32 are integrated and connected by the relay body 1 respectively.

In each connector 2, the signal terminal 22 is inserted into the signal terminal insertion hole 32b of the second printed circuit board 32, soldered, connected to the high frequency circuit pattern 32c, and electrically connected to the contact portion of the relay main body 1. Connecting. The four ground terminals 21 are inserted into the ground terminal insertion holes 32d of the second printed circuit board 32 and soldered to form the ground pattern 3.
Connect to 2f. In this way, the printed circuit boards 3 are juxtaposed while being positioned on the one end 3a side. The resin cover 5 is mounted on the other surface 3d of the printed circuit board 3 with the coil terminals 11, the contact terminals 12, the ground terminals 21 and the signal terminals 22 inserted through the insertion holes.

The operation of the above will be described. When the control integrated circuit unit 4 mounted on the first printed board 31 excites and drives the electromagnet unit of the relay main body 1, the contact unit is between the contact terminals 12, that is, the common terminal and the normally closed terminal, and the common terminal is normally connected to the common terminal. Opens and closes high-frequency signals with the open terminal. The high-frequency signal is transmitted to the signal terminal 22 of each connector 2 via the contact terminal 12 and the high-frequency circuit pattern 32c, and transmitted to the high-frequency circuit of the electric device connected to each connector 2.

The second printed circuit board 32 is provided with a high-frequency circuit pattern 32c and an earth pattern 32f, that is, at least a high-frequency circuit pattern 32c. When a high-frequency signal flows through the high-frequency circuit pattern 32c, the second printed circuit board 32 is compared with the first printed circuit board 31. Since the dielectric loss is small and the high-frequency characteristics are good, the high-frequency signal is transmitted without attenuation and no heat is generated.

On the other hand, the first printed board 31 is a glass epoxy board or a paper epoxy board having a larger dielectric loss than the second printed board 32. However, no high-frequency signal flows and therefore no heat is generated.

In the electromagnetic relay of this embodiment, as described above, the first printed circuit board 31 and the second printed circuit board having at least the high-frequency circuit pattern 32c having a smaller dielectric loss than the first printed circuit board 31 are provided. Printed circuit board 3
2, the printed circuit board 3 is constituted, so that even if a high-frequency signal is transmitted to the high-frequency circuit pattern 32c, attenuation of the high-frequency signal or heat generation due to the high-frequency signal can be prevented, and the first printed circuit board 31 has dielectric loss. By using a large but inexpensive glass epoxy substrate or paper epoxy resin substrate, it is possible to reduce the amount of expensive glass fluoro substrate used and achieve cost reduction.

If the relay terminal 1 has a coil terminal 11 connected to a coil and a contact terminal 12 located on the opposite side of the coil terminal 11 and connected to a contact portion, the coil terminal 11 is provided in parallel. 11 is the first printed circuit board 3
First, since the contact terminals 12 are each solder-mounted on the second printed circuit board 32, the first printed circuit board 31 and the second printed circuit board 32 can be integrated and connected with the relay main body 1 without using fastening parts. it can.

Further, since the control circuit wiring pattern 31b connected to the control integrated circuit section 4 is formed on the first printed circuit board 31, the first printed circuit board 31 is a glass epoxy substrate on which the wiring pattern can be easily formed with high dimensional accuracy. Or, since it is a paper epoxy board, the control circuit wiring pattern 31b
Can be easily refined and miniaturized.

In this embodiment, the control integrated circuit section 4 for controlling the electromagnet section of the relay body is mounted on the first printed circuit board 31 and the control circuit wiring pattern connected to the control integrated circuit section 4 is mounted. 31b is formed on the first printed circuit board 31, but when the control integrated circuit section 4 is mounted on another printed circuit board, the control circuit wiring pattern 3
1b may not be formed on the first printed circuit board, and is not limited.

[0028]

According to the first aspect of the present invention, the printed circuit board is composed of the first printed circuit board and the second printed circuit board provided with at least a high-frequency circuit pattern having a smaller dielectric loss than the first printed circuit board. Even if the high-frequency signal is transmitted to the high-frequency circuit pattern, it is possible to prevent the attenuation of the high-frequency signal or the heat generated by the high-frequency signal,
The first printed circuit board is formed by a glass epoxy board or a paper epoxy resin board which has a large dielectric loss but is inexpensive,
The cost can be reduced by reducing the amount of expensive glass fluorine substrate used.

According to a second aspect of the present invention, in addition to the effect of the first aspect, a coil terminal in which a relay main body is connected to a coil, and a contact terminal which is located on the opposite side of the coil terminal and is connected to a contact portion. Are arranged side by side, the coil terminal is on the first printed circuit board, and the contact terminal is on the second printed circuit board.
Since the first printed circuit board and the second printed circuit board were respectively mounted on the printed circuit board by soldering,
It can be integrated and connected without using fastening parts.

According to the third aspect, in addition to the effects of the first or second aspect, the control circuit wiring pattern connected to the control integrated circuit portion is formed on the first printed circuit board. Since one printed circuit board is formed of a glass epoxy board or a paper epoxy board on which a wiring pattern can be easily formed with high dimensional accuracy, the control circuit wiring pattern 3 can be easily made highly precise and miniaturized.

[Brief description of the drawings]

FIG. 1 is a plan view of a printed circuit board according to an embodiment of the present invention.

FIG. 2 is a front view showing a state where the relay main body and the connector are mounted on a printed circuit board.

FIG. 3 is a plan view of the same.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 relay body 11 coil terminal 12 contact terminal 2 connector 3 printed board 3 a one end 3 b other end 31 first printed board 31 b wiring pattern for control circuit 32 second printed board 32 c high-frequency circuit pattern 4 integrated circuit section for control

Claims (3)

[Claims] 1. A relay body provided with a contact portion driven by an electromagnet portion having a coil to open and close a high-frequency signal, a connector connected to a high-frequency circuit of an electric device, a connector located on one end side, and a relay. A printed circuit board on which the main body is mounted and a high-frequency circuit pattern is provided on the board surface, and a connector and a contact portion are electrically connected to the high-frequency circuit pattern. An electromagnetic relay comprising: a first printed circuit board located at a position; and a second printed circuit board provided with at least the high-frequency circuit pattern and having a smaller dielectric loss than the first printed circuit board. 2. The relay body, wherein a coil terminal connected to the coil and a contact terminal located on the opposite side of the coil terminal and connected to the contact portion are arranged side by side. The electromagnetic relay according to claim 1, wherein the contact terminals are mounted on the first printed circuit board by soldering, respectively. 3. A control circuit wiring pattern connected to a control integrated circuit section for controlling an electromagnet section of the relay main body,
The electromagnetic relay according to claim 1, wherein the electromagnetic relay is formed on the first printed circuit board.