JPS5983318A - Polarized relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a polarized relay.

In conventional polarized relays, a permanent magnet, a contact assembly, and a winding are arranged in series in the axial direction of the excitation winding, and the overall shape is elongated. Even when downsized, the housing part of the winding is compressed and the winding volume is reduced. becomes smaller.

This will be explained with reference to FIG. FIG. 1 is an explanatory diagram of the structure and operating principle showing an example of the arrangement of magnetic circuit tank bottom components of a conventional polarized relay. The polarized relay contains a permanent magnet assembly 11 and a winding assembly 12 in a container 10. The permanent magnet assembly 11 includes a permanent magnet 13 and fixed contacts 14a and 14b of electrical conductors forming a magnetic flux circuit.
! 7, forming a closed circuit of magnetic flux φm (arrow) by the permanent magnet 13. Winding assembly 12 includes excitation winding 18
and a movable armature 16 made of an elastic conductor having a contact point 15 near one end and a fixed part 17 at the other end. When a magnetic flux φ0 is generated in the direction of the arrow when a current flows through the excitation winding m18, a closed circuit is formed through the electrical insulator including the air gap of the movable armature 16 → fixed contacts 14a and 14b → container 10 → movable armature 16. The movable armature 16 is attracted to the fixed contact 14a and adheres to the contact 15, which acts in an additive manner at one fixed contact 14a and counteractingly at the other fixed contact 14b in relation to the magnetic flux φm. A closed circuit is formed. When the direction of the current flowing through the excitation winding 18 is reversed, the direction of the magnetic flux is reversed, and the contact 15 forms an electrically closed circuit with the fixed contact 14b. Since the movable armature 16 serves as a magnetic flux path for the winding current in order to function as a polarized relay, it is arranged parallel to the axial direction of the winding, and one end thereof serves as a movable contact. For this reason, the fixed contact 14a.

The permanent magnet assembly 11 constituting 14b is the excitation winding 18
The length of the permanent magnet assembly 11 is added to the length of the winding assembly 12, so that the length of the container 10 becomes longer. Further, the thickness of the container is influenced by the winding assembly 12 or the permanent magnet assembly 11, and its shape becomes columnar. The relay function includes a contact part of an electric circuit formed by fixed contacts 14a and 14b of the conductor each having a lead-out terminal, and a movable armature 16 serving as a movable contact having a lead-out terminal in its fixed part 17. Demonstrated. Each component with contacts is a permanent magnet 13. Container 10. It is assembled electrically insulated from the excitation winding 18. In order for this structure to exhibit high sensitivity performance, the magnetic flux φ0 generated when current flows through the excitation winding 18 branches to each of the fixed contacts 14a and 14b, forming two magnetic flux paths via the container 10. Magnetic balance between the two magnetic flux paths is required, but this balance adjustment is complex.

Conventional polarized relays have a columnar shape, which limits their installation on printed wiring boards, which are used as mounting boards in recent years, and the placement and installation of each component during the manufacturing stage is difficult. The drawback is that the adjustment is complicated and productivity is low.

SUMMARY OF THE INVENTION An object of the present invention is to provide a polarized relay that eliminates the above-mentioned drawbacks and improves productivity by arranging component parts arranged in series on a shaft in adjacent parallel arrangement.

The basic structure of the polarized relay according to the present invention includes a first magnetic plate flatly arranged on one main surface of an insulating substrate; one end is magnetically coupled to the first magnetic plate, and an armature is attached to the other end. A magnetic rod that is rotatably fitted to serve as a rotation shaft and is erected against the main surface of the substrate; an excitation winding wound around this magnetic rod; and one end portion facing the other; second and third magnetic plates, through which the rotating end of the armature is inserted, at least one other end of which is coupled to the first magnetic plate, and which are erected in line with the magnetic bar and the winding; a magnetic plate; a contact portion that closes and opens according to the operation of the armature that is selectively attracted to the second and third magnetic plates by a magnetic pole field; )#
It is characterized by:

Kotobuki Another feature of the polarized relay according to the present invention is that the first magnetic plate has an integrated structure with at least one of the second and third magnetic plates, and that the polarized relay according to the armature operation The contact portion that closes and opens is constituted by an elastic conductor erected on the main surface of the substrate in line with the second and third magnetic plates; An insulating piece for driving an elastic conductor is provided, the armature, and the magnetic bar.

The contact portion is provided on each of the second and third magnetic plates, or one or more ridge protrusions are provided on the container at positions that sandwich the second and third magnetic plates, and the substrate The four parts that fit into the ridges are provided on the long sides of the ridge.

Next, the present invention will be explained by way of examples with reference to the drawings.

First, Figure 2 (a), (b), (c), (
d) is a relay main body in the first embodiment of the polarized relay of the present invention.

FIG. 3 is a perspective view showing a part of the container, individual pieces of the substrate, and individual pieces of the yoke (magnetic plate) on the substrate. In FIG. 2, a container 200
is a non-magnetic electrically insulating material, and has through-holes 201 and 20 on the bottom for the contact pull-out terminals 25at and 25bt, for the contact pull-out terminal 25, and for the excitation winding pull-out terminal 28, respectively.
2, 203 and the inner surface thereof are provided with guide columns 204 for assembling and inserting the yokes 24a, 24b. After the relay main body is housed in this container 200, the upper M210 is fitted and sealed. The substrate 20 is made of a non-magnetic electrically insulating material, and has the Coke 291 winding assembly 22 and the permanent magnet assembly 21 erected on the PL-plane. Fitting hole 205 for excitation winding core 281
The winding terminal 28 is inserted into the container 200 according to its shape, and is fitted inside the bottom surface. Further, the yoke 29 has through holes 291 and 292 for the core 281 and the winding lead-out terminal 28, respectively, at the assembly position of the winding assembly part 22, similar to the board 20, and the assembly position of the permanent magnet assembly part 21 is located at the yoke. 24a.

It is a magnetic plate having a U-shaped terminal 293 in contact with the substrate 24b, and is fitted into the container 200 while overlapping the substrate 20. The winding assembly 22 is then attached to the container 200. Substrate 20. York 29
These parts are fitted in accordance with the positions of the electrical circuit lead-out terminals, and all these parts are overlapped and fixed. Winding assembly parts 22
A core 281 is a conductor and has an electric circuit pull-out terminal 25t at the bottom and is a magnetic bar, an excitation winding 28 formed by winding the core 281, and an electric circuit pull-out terminal 28 of this winding 28.
t, and the core 281 is assembled so as to be electrically insulated from the excitation winding 28 and the yoke 29. Next, the permanent magnet assembly 21 consists of a permanent magnet 23 and two conductive yokes (
magnetic material) 24a.

24b through an electrical insulator, the two yokes 24a, 24b have fixed contacts 25a, 25b facing each other with a gap at their upper ends, and electrical circuit pull-out terminals 25at, at their lower ends. 25bt, and when aligning the permanent magnet assembly 21 with the position of the extraction terminal hole at the bottom of the container 200 and fitting the yokes 24a and 24b into the groove formed by the four pillars 201, the yoke 24a, 24b has lead-out terminals 24at and 24bt projected from the bottom of the container 200 and fixed to the container 200 and the substrate 20 by pressing. Next, the movable armature 26 is a plate spring made of a conductor having an electrical circuit switching contact 25 at one end, and a fixed part 27 at the other end, and the core 281 is fitted into the fixed part 270 and the rotating shaft hole. It is assembled so that it rotates around the upper end. In the above structure, the magnetic flux path of the permanent magnet 23 is, on the one hand, the permanent magnet 23 - the upper side of the yoke 24b - the fixed contact 25b - the gap between which the movable contact 25 is placed - the fixed contact 25a - the upper part of the yoke 24a - the permanent magnet 23, or On the other hand, the permanent magnet 23 - the lower part of the yoke 24b - the yoke 29 via a gap - the lower part of the yoke 24a - the permanent magnet 23 form two paths, and the permanent magnet 23 is a yoke that provides a magnetic resistance balance between these two magnetic flux paths. It is arranged approximately in the middle between 24a and 24b. Further, when current flows through the excitation winding 28, for example, the magnetic flux flows through the core 281, the fixed part 27, and the movable armature chip 26.
- Contact 25 - Contact 25a - Upper part of yoke 24a - Permanent magnet 23 - Lower part of yoke 24b - Yoke 29 through a gap
- As explained in FIG.
Fixed part 27 - Movable armature 26 - Contact 25 - Contact 25a -
The path between the yoke 24a and the terminal 25at is closed. The switching operation of the contacts is caused by a change in the direction of the current flowing through the excitation winding 28, similar to the explanation with reference to FIG. The winding assembly 22 and the permanent magnet assembly 21 are arranged as close as possible to improve the efficiency of the magnetic flux path due to the current in the excitation winding 28.

In this first embodiment, the movable armature 26 was explained as a leaf spring, but it can be made rigid by providing the fixed part 27 with an elastic structure, and the yoke 24a.

When the lower part of the yoke 24b has a predetermined magnetic resistance with the yoke 29 and forms an integrated structure, the magnetic circuit balance of the yokes 24a and 24b can be stabilized as a permanent magnet assembly, making it easier to assemble and adjust the relay. . Furthermore, the non-magnetic electrically insulating material of the container can perform its function only on the inner surface.

The third figure is a perspective view showing an example of a second embodiment in which the contact portions are divided into seven contact assembly parts in the first embodiment shown in FIG. 2, and an example of its container. In FIG. 3, host elements that are exactly the same as in FIG. 2 are designated by the same numbers. The board 30 is a non-magnetic body made of an electrically insulating material, and has a structure in which a winding assembly 32 and a contact assembly 35 are arranged close to each other on both sides of the yokes (magnetic plates) 34a and 34b of the permanent magnet assembly 31. Spring contacts 35a, 35b, 35a
It has a fitting hole, an excitation winding core 381 fitting hole, a through-hole for a 9-winding wire pull-out terminal (both not shown), and the positioning grooves have a total width on the left and right with respect to the width of the yokes 34a and 34b. There are four grooves, and struts 304 of a container 300, which will be described later, are fitted into these grooves. The contact assembly part consists of three leaf spring contacts 35a, 35b, and 35c each having a contact at one end and a pull-out terminal at the other end.When the leaf spring contact 35c bends, it is made up of three leaf spring contacts 35a or 351. ＞
The permanent magnet assembly 31 and the winding assembly 22 are inserted and erected on one surface of the substrate 30 so that the permanent magnet assembly 31 and the winding assembly 22 are positioned in a direction perpendicular to the direction in which the leaf spring contact bends. Protrude and secure the lead terminal to the surface. Next, the permanent magnet assembly 31 includes the permanent magnet 23 and the permanent magnet 23.
The yoke 34a is made up of two magnetic plates that are erected in parallel to sandwich the magnetic pole faces of the yoke 34a.

34b are directly fixed, and furthermore, after assembly, a magnetic plate yoke 29 that contacts the bottom of the winding assembly 32 and has a U-shaped terminal part connects one of the U-shaped terminals to the yoke 34a1 and the other to the yoke 34b. They are adhesively fixed to one end of each with a predetermined magnetic resistance to form an integrated structure. Also, the yoke 34a.

The other end of the armature 34b faces each other with a space in which the armature 36 can move. This permanent magnet assembly 31 is erected parallel to the contact assembly part 35 with a yoke 29 in close contact with the surface of the board 30, and yokes 34a and 3 are arranged parallel to the movable direction of the leaf spring contact 35c.
4b will face off. Next, the winding m assembly part 32 is composed of a core 381 of a magnetic bar and an excitation winding 28 formed by winding this core 381. One end of the core 381 passes through the yoke 29 and is fitted with the substrate 30. The other end is armature 3
It becomes the rotation axis of 6. This winding assembly 32 is connected to the through hole 291 of the yoke 29. '292 (shown in Figure 2(d))
By aligning and fitting the permanent magnet assembly parts 31
It can also be fixed to the substrate 30.

Next, the movable armature 36 is a magnetic body with a shaft hole having a core 381 as a rotation axis at one end and an insulating card 37 fitted at the other end to move the leaf spring contact 35c. This armature 3
6 is a card 37 whose one end is rotatably attached to the upper end of the core 381 and whose other end is located between the tips of the paired yokes 34a and 34b, and which is further fitted into the tip. grips the tip of the movable leaf spring contact 35e with some play. When the armature 36 operates according to the same magnetic circuit and operating principle as described in FIG. 1, the card 37 brings the contact 35c into contact with and away from the contact 35a or 3'5b. Also container 300
is a non-magnetic material, and has a contact 35a on the bottom surface.

Output terminal through hole 3o1 of 35b. A lead-out terminal through-hole 3021 for the contact 35c and a lead-out terminal through-hole 303 for the winding 28 are provided respectively to provide electrical insulation, and yokes 34a, 34b are provided for convenience of insertion of the assembled relay body.
Four guiding columns 30'4 are provided inside the side surface perpendicularly to the bottom surface for each long side of. In this second embodiment, electrical insulation is provided between the contact assembly 35 and the winding 28.
You only need to consider K. Furthermore, although it has been explained that the movable armature 36 rotates while being pivotally attached to the core 381 fitted to the substrate 30, it is also possible that the armature 36 is fitted to the core 381 and the core 381 is integrally attached to the substrate 30. When the structure is such that it rotates, the magnetic efficiency of the magnetic circuit in the crosspiece 36 can be increased.

Also, I made a contact with three plates on the contact silk stand, but card 37
By providing a plurality of movable plate spring contacts in addition to the above structure, the number of contact circuit combinations can be further increased, and further miniaturization can be achieved when the plate spring contacts are replaced by wire spring contacts. or,
Although the container 300 is illustrated as being sealed with a top lid 310, if the top lid is of an integrated structure and the bottom groove is removed, the relay body is assembled and then the base plate 30 is covered from above.
The container itself forms the bottom part of the container and is sealed, thereby further reducing the manufacturing process.

Next, FIG. 4 is a perspective view showing a third embodiment in which the substrate side of one of the two opposing yokes in the permanent magnet assembly is cut away in the second embodiment of FIG. 3. Fourth
In the figure, the same components as in FIGS. 2 and 3 are given the same numbers and symbols. Further, in this third embodiment, explanations of the nine barrels, construction, functions, etc., are omitted except for the following which are the same as in the second embodiment. First, the yoke 44a has one end in contact with the magnetic pole surface of the permanent magnet 23, and the other end facing the yoke 34b,
The yoke 49 has one side of the U-shaped terminal cut out. Here, when no current is flowing through the excitation winding 28, the magnetic flux of the permanent magnetic flux 23 is the path of the yoke 44a -> the permanent magnet 23 - the lower part of the yoke 34b -> the yoke 49 -> the winding coil r-381 -> the path of the movable armature 36. The movable armature 36 forms one magnetic path with
is attracted to the yoke 44a. Therefore, the card 37 fitted into the movable armature 36 moves the movable contact spring 35 to press the contact against the fixed contact spring 35a, thereby closing the electric circuit. Next, a current is applied to the excitation winding 28 to direct the flow of magnetic flux from the movable armature 36 to the winding core 381 to the yoke 49 to the yoke 34.
When b, the magnetic flux of the yoke 44a cancels out the flow of the magnetic flux of the permanent magnet 23, and the movable armature 36 is attracted toward the yoke 34b. Therefore, the card 37 moves and the movable contacts 3
The bell is separated from the fixed contact spring 35a, and the fixed contact spring 3
Switching of the electric circuit is realized in contact with 5b. At this time, the magnetic flux generated from the magnetic pole surface of the permanent magnet 23 and the magnetic flux due to the excitation of the winding are additive at the upper part of the yoke 34b, and the armature 36 can be driven in a harmonic manner, so that the magnetic attraction force increases and the moving current value increases. decreases. Also, an electrically insulated part and a shaft attachment part for rotation of the armature.

Supplementary explanations regarding the contact combination, spring shape, and container shape are the same as those in the second embodiment.Furthermore, the yoke 44a in the third embodiment has one end connected to the yoke 34b as shown in FIG. When the other ends are fixed to the permanent magnet 23 and the yokes 34b and 49 are integrated without magnetic resistance, the efficiency of the magnetic circuit is maximized.Next, as a fourth embodiment, the first In this embodiment, when the yokes 24'a and 29 of the permanent magnet assembly are cut out as in the third embodiment shown in FIG. Electrically insulated.

When the member described as a conductor in this embodiment is replaced with an insulator, the above-mentioned function can be achieved by electrically connecting at least one of the contact points and the lead-out terminals using conductive wires, printed wiring, etc., respectively. In addition, although the container has continuous ridges and is described as a support in FIGS. 2 and 3, the same function can be achieved even if the ridges are discontinuous.

As explained above, according to the present invention, by arranging the permanent magnet assembly and the winding assembly in parallel on the board, the length of the two sides of the container is determined by the length and thickness of the winding frame, and the length of the other side is determined by the length and thickness of the winding frame. Since the length is determined by the sum of the thicknesses of each assembly component, the length of the longest side can be reduced, reducing mounting restrictions, and it is also possible to integrate some components and place each component in a direction almost perpendicular to the board. Since it can be assembled by inserting it, manufacturing and adjustment methods are simplified.
This has the effect of improving productivity.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of the arrangement of magnetic circuit layer components of a conventional polarized relay, and FIG. 2(a) shows a first embodiment of the polarized relay main body of the present invention. b) shows a part of the container of (a), FIGS. 2(c) and (d) are respective perspective views showing the two parts of (a), and FIG. 3 shows a second embodiment. FIG. 4 is a perspective view showing only the main body as a third embodiment. 20.30...Substrate, 21,31.41...
...Permanent magnet assembly parts, 22, 32, 42゛...°・
Winding assembly parts, 23...Permanent magnet, 24a, 2
4b, 29° 34a, 34b, 44a, 4'l...
・Yoke (magnetic plate), 25, 25a, 25b, 35a,
35b. 35c... Contact, 26.36... Armature, 28... Winding, 35... Contact part,
37...Card (insulating piece), 200,300.
...Container, 204,304... Prop (ridge) % 281.381°°"゛・° Core (magnetic rod). #1 Figure Child 3 Figure

Claims (6)

[Claims] (1) A first magnetic plate flatly arranged on one main surface of an insulating substrate; one end is magnetically coupled to the first magnetic plate, and an armature is rotatably fitted to the other end. A rotating end of the armature is inserted between a magnetic bar serving as a rotating shaft and standing upright with respect to the main surface of the substrate; an excitation winding wound around this magnetic bar; and one opposing end. death. At least one other end portion is coupled to the first magnetic plate,
and second and third magnetic plates erected in parallel with the magnetic rod and the winding; and a permanent magnet sandwiched between the magnetic pole tips 3r and the second and third magnetic plates, respectively; Suction 1. According to the operation of the armature, the closing and [1 old ζ
A polarized relay characterized by a contact portion having tf and a contact portion comprising: (2) The polarized relay according to claim (1), wherein the first magnetic plate has an integrated structure with at least one of the second and third magnetic plates. . (3) The contact portion, which is closed and opened by the operation of the armature, is constituted by an elastic conductor provided vertically on the main surface of the substrate in line with the second and third magnetic plates. A polarized relay according to claim (1) or (2). (4) The polarized relay according to claim (3), characterized in that an insulating piece for driving the elastic conductor is provided at least at the rotating end of the armature. (5) The polarized relay according to claim (1), wherein the contact portion is provided on each of the armature, the magnetic bar, and the second and third magnetic plates. (6) One or more ridge protrusions are provided on the container at positions that sandwich the second and third magnetic plates, and four parts that fit with the ridge protrusions are provided on the long sides of the substrate. A polarized relay according to claim (1), characterized in that: