JPH084671Y2 - Polarized electromagnetic relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to an improvement in the arrangement of terminals in a polarized electromagnetic relay that uses a permanent magnet in combination with an electromagnet.

(Prior art and its problems) As a polarized electromagnetic relay, for example, the actual open sho 62-171145
There is something shown in the issue.

In this device, the movable body is swung by changing the excitation state of the coil of the electromagnet, and the movable contact piece integrally provided on the movable body is swung to move the movable contact attached to one side of the movable contact piece. Is connected to one corresponding fixed contact, and the movable contact attached to the other side is switched and connected to the corresponding other fixed contact. Usually, one of the fixed contacts is a make contact and the other is a break contact.

A pivot piece is integrally projected from both sides of the center of the movable contact piece, and the pivot piece is welded and fixed to the upper end portion of the common terminal fitting fixed to the base. At the center of the base as a common terminal. On the other hand, each of the fixed contacts is provided on the upper end side of each of the output terminal fittings, and the lower part of each of the output terminal fittings projects downward as an output terminal on both sides of the projecting position of the common terminal of the base. ing.

As described above, in the polarized electromagnetic relay configured to oscillate the movable body, the output terminals are arranged on both sides of the common terminal so as to project from the base. In such a case, the following problems occurred when the polarized electromagnetic relays were collectively arranged on the printed circuit board or the like.

FIG. 8 shows a printed circuit board 101 with five polarized electromagnetic relays 1.
02 shows a configuration in which the two are arranged side by side, and the polarized electromagnetic relay 102
In each of these, 103 is a coil terminal, 104 is a common terminal, and 105 is an output terminal. When the output terminal portion of the control device or the like configured by the printed board 101 is on the A side of the printed board 101 as shown in the drawing, the output terminal portion of the printed board 101 is connected to the connection portion of the output terminal 105. Although the output line S is provided so as to be guided to the A side, the output line S from the output terminal 105 on the side far from the A side of the polarized electromagnetic relay 102 is the common line C to which each of the common terminals 104 is connected. Must be arranged so as to detour, and particularly, in the case of the three poled electromagnetic relays 102 located in the middle, the arrangement distance of the output line S becomes long and the arrangement configuration becomes complicated, and the printed circuit board 101 However, there is a problem in that the arrangement space of other elements in the above is squeezed.

Also, in other general electromagnetic relays that are not polarized electromagnetic relays, each of the output terminals is arranged on one side of the common terminal, and a printed circuit board having a wiring pattern corresponding to this is commercially available. However, when a polarized electromagnetic relay is used, there is also a problem that the commercially available printed circuit board cannot be used as it is.

(Purpose of the Invention) The present invention has been made in view of the above circumstances, and when it is used collectively on a printed circuit board, a wiring pattern can be easily formed on the printed circuit board, which is commercially available as a printed circuit board. It is an object of the present invention to provide a polarized electromagnetic relay that can be used as a product.

(Structure and Effect of the Invention) In order to achieve such an object, the present invention accommodates an electromagnet and a movable block in the center of a base, and the movable block is swingably supported at the center of the electromagnet. And it has movable contacts on both sides of its swing end,
A second output terminal including a fixed contact with which one of the movable contacts contacts from both sides of the lower surface of the base, and a first output terminal including another fixed contact with which the other of the movable contacts contacts. The common terminal and the coil terminal are projected, and the second output terminal, the first output terminal, the common terminal and the coil terminal are arranged in this order on one side of the printed board. The output line connected to each of the output terminals is connected to the output terminal side of the printed circuit board without bypassing the common line to the common terminal, and a pair of frames facing each other are provided. The second output end from each of the two frame portions, leaving a space in which the base is arranged between the both frame portions of the one lead frame. A second output terminal metal fitting part that constitutes the first output terminal metal fitting part that constitutes the first output terminal, a common terminal metal fitting part that constitutes the common terminal, and a coil terminal metal fitting part that constitutes the coil terminal. The first output terminal metal fitting portion is integrally formed with an extension portion as a conductive path on the tip side, and the extension portion bypasses the conductive path to the common terminal metal fitting portion. Is formed so as to extend between the common terminal metal fitting portion and the coil terminal metal fitting portion, the base is arranged in the space, and each metal fitting portion is cut off at a predetermined location to form the common terminal. , The output terminals and the coil terminal are respectively configured.

According to this configuration, the protruding positions of the first and second output terminals are both on the one side of the protruding position of the common terminal. Therefore, when a plurality of the polarized electromagnetic relays are arranged in parallel on the printed circuit board, The output lines from the first and second output terminals can be provided on the substrate without bypassing the common line to which the common terminal is connected.

Therefore, according to the present invention, since the arrangement distance of the output line on the printed circuit board to be mounted can be shortened, the arrangement configuration of the wiring pattern on the printed circuit board can be simplified, and the arrangement of other elements on the printed circuit board can be changed to the output line. I was able to do it freely without being affected by.

In addition, it is possible to use a commercially available printed circuit board as it is, and further, since each terminal is integrally configured with one lead frame as described above,
In addition to facilitating the process of forming each terminal, it is possible to maintain a wide interval between the extending parts because the strength can be increased by bending the extending part with respect to the plane of the lead frame. As a result, the base width of the polarized electromagnetic relay has been widened so that the electromagnet can be installed without increasing the size of the equipment.

(Description of Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing the overall configuration of a polarized electromagnetic relay, FIG. 2 is a plan sectional view showing the internal configuration, and FIG. 3 is a side sectional view showing the internal configuration.

In the figure, reference numeral 1 is a base, 2 is an electromagnet, 3 is a movable block, and 4 is a casing.

The base 1 is made of resin, has a rectangular planar shape, and a mounting recess 5 for the electromagnet 2 is provided on the upper surface thereof.
Coil terminal 6a, common terminal 7a, first output terminal from both sides of the lower part along the longitudinal direction from one end side to the other end side
Each of 8a and the second output terminal 9a projects downward.

The arrangement of the terminals 6a, 7a, 8a, 9a in the base 1 is the characteristic of the present invention, and the arrangement will be described in detail.

The respective terminals 6a, 7a, 8a, 9a are composed of respective terminal fittings 6, 7, 8, 9 attached to the base 1, and these terminal fittings 6, 7, 8, 9 are shown in FIGS. It is integrally obtained from the lead frame 10 as shown.

In these drawings, each of 6b is a coil terminal fitting, 7b is a common terminal fitting, 8b is a first output terminal fitting, and 9b is a second output terminal fitting.

Each of the coil terminal metal fittings 6b protrudes inward from both end positions of the frame portions 11 of the lead frame 10 which face each other, and each of the tip portions thereof serves as a connecting portion 12 to the coil of the electromagnet 2, Since the metal fitting 6b is bent downward near its base, each of the connecting portions 12 is positioned one step lower than the position of the lead frame 10.

Each of the common terminal metal fittings 7b protrudes inward from the central position of the frame parts 11 of the lead frame 10 which face each other, the ends thereof branch in two directions, and the branch ends are connected to a movable contact piece described later. It is part 13.

The first output terminal metal fitting portion 8b projects inward from a position adjacent to the common terminal metal fitting portion 7b of the frame portion 11 facing each other, and at the first bent portion 14, one connecting portion 13 of the common terminal metal fitting portion 7b is formed.
Bends away from, then bends at the second bent portion 15 and projects inward again, and bends toward the common terminal metal fitting portion 7b at a position inside the connection portion 13 at the third bent portion 16 to the side. Each of the extending end portions 17 is located in the vicinity of the connecting portion 12 of the coil terminal metal fitting portion 6b on the one side, and a fixed contact 18 is attached to the extending end portion 17. The inner edge portion 20 of the extension portion 19 extending from the third bent portion 16 is bent downward, and each of the extension portions 19 has sufficient strength due to this bending structure, and the extension portions 19 are not separated from each other. I am trying to keep a wide space. By making it possible to maintain a wide interval between the extending portions 19, it is possible to mount the electromagnet 2 without increasing the width of the base 1 and increasing the size of the device when forming the polarized electromagnetic relay. There is.

The second output terminal metal fitting 9b projects inward from a position between the first output terminal metal fitting 8b and the coil terminal metal fitting 6b on the other side of the frame 11 facing each other, and the tip 21 of the second output terminal metal fitting 9b projects on the other side. It is located near the connecting part 12 of the terminal
Each of them has a fixed contact 22 attached thereto.

Then, as shown in FIG. 6, the tip ends of the respective terminal metal fittings 6b, 7b, 8b, 9b provided on the lead frame 10 are integrally fixed to the base 1 by molding as shown in FIG. The hatched portions (shown in FIG. 4) of the terminal fittings 6b, 7b, 8b, 9b are cut off so that the respective terminal fittings 6, 7, 8, 9 are attached to the base 1.
The pair of coil terminal metal fittings 6b on the other side is cut off in a shaded portion near the base 1 so that the coil terminal metal fittings 6b are not used as the coil terminal metal fittings 6 and the pair of coil terminal metal fittings 6b on the one side are cut off. This is because it is used as the coil terminal fitting 6.

As described above, each of the terminal fittings 6, 7, 8, 9 is attached to the base 1 and then bent downward at the protruding position from the base 1 so that each of the portions protruding downward from the base 1 These are terminals 6a, 7a, 8a, 9a.

In this way, the first output terminal 8a formed by the intermediate portion of the extension 19 and the like of the first output terminal fitting 8 in the base 1 is formed.
By arranging the conductive path of the above so as to bypass the connecting portion 13 formed by the common terminal fitting 7a and the conductive path to the common terminal 7, the first and second output terminals 8a and 9a of the base 1 are provided. The protruding position of is the one side of the protruding position of the common terminal 7a.

By arranging each of the terminal fittings 6, 7, 8 and 9 as described above, this polarized electromagnetic relay can be arranged on the printed board as shown in FIG. That is,
On the printed circuit board 30, the output line S to which the first output terminal 8a and the second output terminal 9a of each polarized electromagnetic relay is connected bypasses the common line C to which each of the common terminals 7a is connected. Printed circuit board 30 without
It is arranged so as to be connected to the output terminal side of the above, and thus, the polarized electromagnetic relay of the present invention can be mounted on a printed circuit board on which another electromagnetic relay is mounted and used.

Below, the configuration of the other parts of the polarized electromagnetic relay of the present invention,
The operation of the polarized electromagnetic relay will be briefly described.

The electromagnet 2 is constructed by winding a coil 33 around an iron core 31 via a spool 32, and the magnetic pole portions 34 corresponding to the movable block 3 are integrally provided at both ends of the iron core 31 in a rising shape. ing. A holding portion 36 for the permanent magnet 35 is provided at an intermediate position of the spool 32.
A permanent magnet 35 is provided so as to be fitted in a fitting groove 37 formed in the middle part of the. Support grooves 38 are provided on both sides of the holding portion 36.

The movable block 3 is a rectangular movable body made of a magnetic material.
39, a movable contact piece 41 having a twin structure arranged on both sides of the movable body 39 and having movable contacts 40 attached to both ends thereof, and a fixing for integrally molding and fixing the movable body 39 and the movable contact piece 41 in the central portion. And part 42. From the center of both the movable contact pieces 41, a rotary pivotally supporting portion 43 is provided so as to project to both sides, and support convex portions 44 are provided at both sides of the lower surface of the fixed portion 42. . In the movable block 3, the above-mentioned pivotal support portion 43 is a connection portion of the common terminal fitting 7.
It is fixed to 13 by welding, and is provided swingably on the electromagnet 2 in a state in which the support convex portion 44 is received by the support groove 38.

The casing 4 is made of resin, and the electromagnet 2 is mounted on the base 1.
And it is attached so as to cover the movable block 3.

In the above configuration, the electromagnet 2 is connected via the coil terminal 6b.
When the operating current is repeatedly turned on and off in the coil 33, the direction of the magnetic circuit connecting the permanent magnet 35, the iron core 31 and the movable body 39 is switched correspondingly, whereby the movable block 3 swings, The contact between the movable contact 41 and the fixed contact 18 is switched on both sides.

[Brief description of drawings]

1 to 7 relate to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing the overall structure of a polarized electromagnetic relay, FIG. 2 is a plan sectional view showing the internal structure, and FIG. 3 is the same. A side sectional view, FIG. 4 is a plan view showing the structure of the lead frame, FIG. 5 is the same sectional view, FIG. 6 is a perspective view showing the attachment of the lead frame to the base, and FIG. 7 is a polar electromagnetic relay. It is a mounting explanatory view on a printed circuit board. FIG. 8 is an explanatory view of mounting a polarized electromagnetic relay in a conventional example on a printed circuit board. 1 ... Base, 2 ... Electromagnet, 6a ... Coil terminal, 7a ...
… Common terminal, 8a …… First output terminal, 9a …… Second output terminal, 18 …… Fixed contact, 35 …… Permanent magnet, 39 …… Movable body, 40 …… Movable contact, 41 …… Movable Contact piece.

Claims (1)

[Scope of utility model registration request] 1. An electromagnet and a movable block are housed in the center of a base, and the movable block is swingably supported at the central portion of the electromagnet and has movable contacts on both sides of its swing end. A second output terminal having a fixed contact with which one of the movable contacts contacts from both sides of the lower surface of the base, and a first output terminal having another fixed contact with which the other of the movable contacts contacts. , The common terminal and the coil terminal are respectively projected, and the second output terminal, the first output terminal, the common terminal and the coil terminal are arranged in this order on one side of the printed circuit board. The output line connected to each of the output terminals is thereby connected to the output terminal side of the printed circuit board without bypassing the common line to the common terminal. A lead frame having a pair of frame portions facing each other, and leaving a space for arranging the base inwardly between the frame portions. A second output terminal metal fitting forming a two-output terminal, a first output terminal metal fitting forming a first output terminal, a common terminal metal fitting forming a common terminal, and a coil terminal forming a coil terminal The metal fitting portion is formed so as to extend inward, and the first output terminal metal fitting portion further has an extending portion integrally formed on the tip end side as a conductive path, and the extending portion conducts electricity to the common terminal metal fitting portion. It is formed so as to bypass the path and extend between the common terminal fitting portion and the coil terminal fitting portion, and the base is placed in the space, and the fitting portions are cut off at predetermined locations. The above Como And a coil terminal, the output terminal and the coil terminal are respectively configured.