JPH06223691A - Relay - Google Patents

Abstract

PURPOSE:To improve the high frequency characteristics of a relay. CONSTITUTION:A balance armature structure is provided in which, as power is supplied to a coil 2, an armature 4 is oscillated to switch contacts from one to the other. A fixed contact 6 is passed through and embedded in the portion of a body 8 to which a contact piece 5 is opposed. The embedded side of the fixed contact 6 serves as a surface to be mounted on a printed circuit board 13. A contact portion comprising the contact piece 5 and the fixed contact 6 is brought close to the printed circuit board 13. An electrically conductive portion that provides an electrical connection between the contact portion and the printed circuit board 13 is thus made as short as possible so as to reduce signal leakage, etc., so as 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 relay having a so-called balanced armature structure in which an armature is oscillated in accordance with the energization of a coil to switch contacts.

[0002]

2. Description of the Related Art A relay having a balanced amateur structure is shown in FIG.
Shown in. This relay is basically arranged between a U-shaped iron core 1 opening upward, a coil 2 wound around the iron core 1 in an insulated state, and both side pieces 1 a of the iron core 1. The permanent magnet 3, the armatures 4 swingably mounted on the permanent magnets 3 with both ends facing the upper surfaces of the both side pieces 1a of the iron core 1, and the movable members integrally provided at both ends of the armatures 4. It is composed of a contact piece 5 as a contact point and a fixed contact 6 which comes into contact with and separates from the contact piece 5 according to the swing of the armature 4.

Insulating portions 7 are formed on both sides of the iron core 1 by a synthetic resin material or the like. The insulating portion 7 has a function of restricting a width around which the coil 2 is wound and a function of fixing the permanent magnet 4 at a predetermined position. There is also one in which a coil bobbin made of synthetic resin is used instead of the insulating portion 7, the iron core 1 is inserted to form a coil bobbin, and the coil 2 and the permanent magnet 4 are assembled based on the coil bobbin. The permanent magnet 3 is magnetized so that the central portion and both end portions have different polarities. In addition, instead of the contact piece 5, there is also one in which a movable contact is attached integrally with the armature 4. In this case, the contact spring pieces are attached in parallel along the longitudinal direction of the armature 4, and the movable contacts are fixed to both ends of the contact spring pieces.

Each of the above components is incorporated into a box-shaped body 8 having an open top surface, and a box-shaped cover 9 having a bottom opening is fitted on the body 8. The body 8 has a common terminal 10 to which the contact pieces 5 provided on both sides are electrically connected together.
And a contact terminal 11 electrically connected to the fixed contact 6,
Coil terminals 12, to which both ends of the coil 2 are respectively connected, are implanted. Here, the fixed contact 6 is often fixed directly to the upper end portion of the contact terminal 12, the block including the iron core 1, the coil 2, the permanent magnet 3 and the insulating portion 7, and the terminal block including the terminals 10 to 12. Is also integrally molded with synthetic resin to form a body block. In this case, the fixed contact 6 is fixed beforehand to the contact terminal 11 of the terminal block.

In the above-mentioned relay, both side pieces of the iron core 1 as a magnetic pole portion are magnetized to different polarities in accordance with the direction of current flow to the coil 2, and one of the both end portions of the armature 4 is attracted, and
A magnetomotive force that separates the other is generated to rotate the armature 4 about the swing fulcrum 4a. In this way, once the armature 4 contacts the side piece 1a of the iron core 1, even if the energization of the coil 2 is stopped, the rotating state of the armature 4 is maintained by the magnetomotive force of the permanent magnet 4. Next, when swinging the armature 4, the coil 2 is rotated in the opposite direction to the above case.
When a current is applied to the armature 4, the armature 4 rotates in the opposite direction.

[0006]

By the way, the above-mentioned relay is mounted on the printed circuit board 13 using the terminals 10 to 12 as shown in FIG. Here, the contact portion composed of the contact piece 5 and the fixed contact 6 is arranged relatively on the upper side, and the contact portion and the printed circuit board 13 are connected by the common terminal 10 and the contact terminal 11. . Therefore, there is a problem that high frequency characteristics are deteriorated due to signal leakage through the terminal portion.

The present invention has been made in view of the above points, and an object thereof is to provide a relay having excellent high frequency characteristics.

[0008]

According to the present invention, in order to achieve the above object, a U-shaped iron core, a coil wound around a central portion of the iron core, and at least a part of the iron core are brought into contact with the iron core. The permanent magnets interposed between the two side pieces of the iron core, the armature that swings in such a manner that both ends of the iron core face the both sides of the iron core and the central part contacts the permanent magnet, and the permanent magnets are integrally attached to both ends of the armature. The movable contact and the fixed contact that the movable contact comes into contact with and separates from in response to the swing of the amateur, and the fixed contact is planted by penetrating the fixed contact in a portion where the movable contact of the case in which each configuration is housed is opposed. The contact surface of the contact surface is used as the mounting surface on the printed circuit board.

[0009]

According to the present invention, as described above, the fixed contact is pierced and implanted in the portion of the case where the movable contact is opposed to the movable contact, and the surface of the fixed contact is mounted on the printed circuit board. The contact portion composed of the contact and the fixed contact is brought close to the printed circuit board, and the conductive portion electrically connecting the contact portion and the printed circuit board is made as short as possible. As a result, signal leakage due to the conductive portion is reduced and high frequency characteristics are improved.

[0010]

FIG. 1 shows an embodiment of the present invention. Structurally, the relay of this embodiment has a structure in which the iron core 1, the coil 2, the permanent magnet 3, and the armature 4 described in FIG. The armature 4 is appropriately supported by a support structure so as not to hinder swinging. The fixed contact 6 is planted through the bottom surface of the body 8 facing the contact piece 5 integrated with the armature 4. That is, the fixed contact 6 is planted on the mounting surface portion of the body 8 on the printed circuit board 13.

As described above, the fixed contact 6 is penetrated into the mounting surface portion of the body 8 to be planted, whereby the printed circuit board 13 is formed.
Fixed contact 6 for the printed wiring formed on the mounting surface of
Can be directly electrically connected (eg, soldered). Therefore, the fixed contact 6 itself has a function as the contact terminal 11, and the contact terminal 11 can be omitted. In addition, the printed circuit board 1 is provided with a contact portion composed of the contact piece 5 and the fixed contact 6.
Since it is provided on the side close to 3, the distance between the contact portion and the printed circuit board 13 becomes short, and the contact piece 5 and the printed circuit board 1
Also, the length of the common contact 10 that connects 3 and 3 is shortened. Therefore, signal leakage is reduced and high frequency characteristics are improved.

By the way, the relay described above has a common terminal 10
The coil terminal 12 and the coil terminal 12 are inserted into the insertion holes of the printed circuit board 13 and mounted on the printed circuit board 13. However, as shown in FIG. It may be a surface mounting structure that is soldered to the formed printed wiring. In this case, the common terminal 10 'for surface mounting and the coil terminal 1
The shape of 2'may be such that solder can be easily placed on it.

In the case of FIG. 2, the permanent magnet 3 is in contact with the center of the iron core 1 and the lower surface is in contact with the swinging fulcrum 4a of the armature 4, and the upper and lower ends are magnetized with different poles. is there. Even such a permanent magnet 3 ′ functions similarly to the permanent magnet 3 of FIG.

[0014]

As described above, according to the present invention, the U-shaped iron core, the coil wound around the central portion of the iron core, and at least a part of the coil being in contact with the iron core are interposed between the both side pieces of the iron core. A permanent magnet, an armature that oscillates in such a way that both ends of the iron core face both ends of the iron core and the central part contacts the permanent magnet, the movable contacts integrally attached to both ends of the armature, and the movable contact With fixed contacts that move in and out according to the swing of the amateur, the fixed contacts are planted by penetrating the fixed contacts through the parts where the movable contacts of the case in which each configuration is housed face each other. Since it is mounted on the board, the contact part consisting of the movable contact and the fixed contact can be brought close to the printed circuit board, and the conductive part electrically connecting the contact part and the printed circuit board can be made as short as possible. Signal leakage due to conductive parts Can not, high-frequency characteristics can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a configuration of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structure of another embodiment.

FIG. 3 is a cross-sectional view showing a structure of a conventional example.

[Explanation of symbols]

 1 iron core 2 coil 3 permanent magnet 4 armature 5 contact piece 6 fixed contact 8 body 13 printed circuit board

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[Procedure amendment]

[Submission date] July 5, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

In the above-mentioned relay, both side pieces of the iron core 1 as a magnetic pole portion are magnetized to different polarities in accordance with the direction of current flow to the coil 2, and one of the both end portions of the armature 4 is attracted, and
A magnetomotive force that separates the other is generated to rotate the armature 4 about the swing fulcrum 4a. In this way, once the armature 4 contacts the side piece 1a of the iron core 1, even if the energization of the coil 2 is stopped, the rotating state of the armature 4 is maintained by the magnetomotive force of the permanent magnet 4. Next, when swinging the armature 4, the coil 2 is rotated in the opposite direction to the above case.
When a current is applied to the armature 4, the armature 4 rotates in the opposite direction. In the above explanation, the relay is configured as a bistable type.
As explained above, the spring load characteristics of the contact spring pieces
Stop energizing coil 2 due to imbalance
Then, the predetermined contact piece 5 (movable contact) and the fixed contact 6
With a monostable type in which the amateur 8 returns and rotates in contact with
It can also be configured.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

According to the present invention, in order to achieve the above object, a U-shaped iron core, a coil wound around a central portion of the iron core, and at least a part of the iron core are brought into contact with the iron core. The permanent magnets interposed between the two side pieces of the iron core, the armature that swings in such a manner that both ends of the iron core face the both sides of the iron core and the central part contacts the permanent magnet, and the permanent magnets are integrally attached to both ends of the armature. and the movable contact, and a fixed contact movable contact approaching and moving away from depending on the oscillation of the armature, a movable contact of the body each component is housed is passed through the fixed contact in a portion opposed implanted with, the fixed The contact surface of the contact surface is used as the mounting surface on the printed circuit board.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

As described above, according to the present invention, the fixed contact is pierced and implanted in the portion of the body where the movable contact faces each other, and the fixed contact planting surface is used as the mounting surface on the printed circuit board. The contact portion composed of the contact and the fixed contact is brought close to the printed circuit board, and the conductive portion electrically connecting the contact portion and the printed circuit board is made as short as possible. As a result, signal leakage due to the conductive portion is reduced and high frequency characteristics are improved.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

[0014]

As described above, according to the present invention, the U-shaped iron core, the coil wound around the central portion of the iron core, and at least a part of the coil being in contact with the iron core are interposed between the both side pieces of the iron core. A permanent magnet, an armature that oscillates in such a way that both ends of the iron core face both ends of the iron core and the central part contacts the permanent magnet, the movable contacts integrally attached to both ends of the armature, and the movable contact A fixed contact that comes in contact with and separates according to the swing of the amateur, and is planted by penetrating the fixed contact through the portion where the movable contact of the body where each component is housed faces, and printing the planting surface side of this fixed contact. Since it is mounted on the board, the contact part consisting of the movable contact and the fixed contact can be brought close to the printed circuit board, and the conductive part electrically connecting the contact part and the printed circuit board can be made as short as possible. Signal leakage due to conductive parts Can not, high-frequency characteristics can be improved.

[Procedure correction 6]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (1)

[Claims] 1. A U-shaped iron core, a coil wound around a central portion of the iron core, a permanent magnet interposed between both sides of the iron core by contacting at least a part of the iron core, and both sides of the iron core. An armature that oscillates with both ends facing each other and the central part contacting a permanent magnet, a movable contact that is integrally attached to both ends of the armature, and the movable contact makes contact according to the oscillation of the amateur. With fixed contacts that are separated from each other, the fixed contacts are planted by penetrating through the parts where the movable contacts of the case where they are housed face each other, and the planting surface side of these fixed contacts serves as the mounting surface on the printed circuit board. A relay characterized by.