JPS6314451B2 - - Google Patents

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 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 is composed of a permanent magnet 13 and fixed contacts 14a and 14b of a conductor forming a magnetic flux circuit, and forms a closed circuit for the 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.
It consists of: When a magnetic flux φ ₀ is generated in the direction of the arrow when current is passed through the excitation winding 18, the movable armature 16→fixed contacts 14a and 14b→container 10→
A closed circuit is formed through the electrical insulator including the air gap of the movable armature 16, and in relation to the above-mentioned magnetic flux φm, one fixed contact 14a acts additively, and the other fixed contact 14b acts offsetly. The armature 16 is attracted to the fixed contact 14a and adheres to the contact 15, forming an electrically closed circuit. When the direction of the current flowing through the excitation winding 18 is reversed, the magnetic flux direction 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. Therefore, the permanent magnet assembly 11 constituting the fixed contacts 14a and 14b is arranged on the extension of the axis of the excitation winding 18, and the length of the permanent magnet assembly 11 is added to the length of the winding assembly 12, and 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 is the fixed contacts 14a, 1 of the conductor.
4b each have a lead-out terminal, and a movable armature 16 serving as a movable contact has a lead-out terminal in its fixed part 17, and is operated including a contact part of an electric circuit formed. Each component with contacts is a permanent magnet 1
3. The container 10 and the excitation winding 18 are electrically insulated and assembled. In order for this structure to exhibit high sensitivity performance, the magnetic flux φ ₀ 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 these two magnetic flux paths is required, but this balance adjustment is complicated.

Conventional polarized relays have a columnar shape, which limits their installation on printed wiring boards, which are used as mounting boards in recent years.Also, during the manufacturing stage, the placement, installation, and adjustment of each component are complicated, which reduces productivity. It has the disadvantage of being bad.

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 parallel and adjacent to each other.

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 fixed to the first magnetic plate for magnetic coupling, and an armature is rotatably fitted to the other end to form a rotating shaft, and the magnetic plate is erected with respect to the main surface of the substrate. A rod; an excitation winding wound around this magnetic rod;
A rotary end of the armature is inserted between opposing one ends, and at least one other end is fixed to and magnetically coupled to the first magnetic plate, and the armature is arranged side by side with the magnetic bar and the winding. a permanent magnet whose pole tips are sandwiched between the second and third magnetic plates, respectively; a magnetic field generated by the magnets and a magnetic field generated by energizing the winding; and a contact portion that closes and opens in accordance with the operation of the armature that is selectively attracted to the second and third magnetic plates by a magnetic field.

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 armature operates to close and close the relay. The contact portion to be opened is constituted by an elastic conductor provided upright on the main surface of the substrate in line with the second and third magnetic plates; A portion of the magnetic plate up to the opposite pole is made of a magnetic material, and a scissor-shaped insulating piece is provided that is fixed to the rotating end of the magnetic material and clamps the rotating end of the elastic conductor, the armature; The contact portion is provided on each of the magnetic bar, the second and third magnetic plates, or the surface on which the substrate is arranged is provided on each surface that contacts the second and third magnetic plates inside the container. At least one pair of protrusions are provided on a pair of parallel straight lines that are substantially perpendicular to the magnetic plate and have an inner distance that is substantially the same as the width of each of the second and third magnetic plates.

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

First, FIGS. 2a, b, c, and d respectively show the relay main body, part of the container, individual pieces of the board, and pieces of the yoke (magnetic plate) on the board in the first embodiment of the polarized relay of the present invention. It is a perspective view showing a piece. In FIG. 2, a container 200 is made of a non-magnetic electrically insulating material, and has through holes 201, 202 on the bottom for contact pull-out terminals 25at, 25bt, contact pull-out terminals 25t, and excitation winding pull-out terminals 28t, respectively. , 203 and the inner surface thereof are provided with guide columns 204 for when assembling and inserting the yokes 24a and 24b. After the relay main body is housed in this container 200, the upper lid 210 is fitted and sealed. The substrate 20 is a non-magnetic electrically insulating material, and has a yoke 29, a winding assembly 22, and a permanent magnet assembly 21 erected on one side. It is provided with a hole 205 for fitting the excitation winding core 281 and two through holes 206 for the winding lead-out terminals 28t, and is inserted into the container 200 according to the shape and fitted inside the bottom surface.
Further, the yoke 29 has respective through holes 291 and 292 for the core 281 and the winding lead-out terminal 28t, similar to the board 20, at the assembly position of the winding assembly part 22, and the assembly position of the permanent magnet assembly part 21 is located at the yoke 2.
4a and 24b, and is fitted into the container 200 so as to overlap the substrate 20. The winding assembly 22 is then attached to the container 20.
0, the board 20, and the yoke 29 are fitted in accordance with the positions of the electric circuit lead-out terminals, and all these parts are superimposed and fixed. The winding assembly 22 includes a core 281 that is a conductor and has an electrical circuit extraction terminal 25t at the bottom and serves as a magnetic bar, an excitation winding 28 formed by winding the core 281, and an electrical circuit extraction of this winding 28. 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 yokes (magnetic material) 2 of electrically conductive material standing in parallel with the magnetic pole surface of this permanent magnet 23 sandwiched between them.
4a and 24b are integrated through an electrical insulator, and each of the two yokes 24a and 24b has a fixed contact 25 facing each other with a gap at the upper end.
a, 25b, and an electric circuit pull-out terminal 2 at the lower end.
5at, 25bt, align the permanent magnet assembly 21 with the extraction terminal hole at the bottom of the container 200, and insert the yoke 2 into the groove formed by the four pillars 201.
4a, 24b are fitted together, the yokes 24a, 24b protrude the lead-out terminals 24at, 24bt from the bottom of the container 200, and connect the container 200 and the substrate 2.
It is pressed and fixed by 0. Next, the movable armature 26
is a conductive plate spring having an electric circuit switching contact 25 at one end, and has a fixing part 27 at the other end, and the core 281 is fitted into the rotating shaft hole of the fixing part 27.
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 upper side of the yoke 24b - the permanent magnet 23 -
Fixed contact 25b - gap between which the movable contact 25 is placed -
The fixed contact 25a - the upper part of the yoke 24a - the permanent magnet 23, and 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.
is arranged approximately in the middle of the yokes 24a and 24b, where the magnetic resistance balance between these two magnetic flux paths can be achieved. When current flows through the excitation winding 28, for example, magnetic flux flows through the core 281, the fixed part 27, the movable armature 26, the contact 25, the contact 25a, the upper part of the yoke 24a, the permanent magnet 23, the lower part of the yoke 24b, and the gap. As explained in FIG. 1, the movable armature 26 is attracted to and pressed against the yoke 24a, thereby forming an electrical circuit between the terminal 25t, the core 281, the fixed part 27, and the movable armature. Armature 26-contact 25-contact 25a-
A path from yoke 24a to 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 into a rigid body by providing the fixed part 27 with an elastic structure. When forming an integrated structure with magnetic resistance, the yoke 2 is used as a permanent magnet assembly.
The balance of the magnetic circuits 4a and 24b can be stabilized, 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.

Next, FIG. 3 is a perspective view showing an example of a second embodiment in which the contact part is separated from the first embodiment shown in FIG. 2 to form a contact assembly part, and an example of a container thereof. In FIG. 3, components that are exactly the same as those in FIG. 2 are given the same reference numerals. The substrate 30 is a yoke (magnetic plate) 34a and 34 of the permanent magnet assembly 31.
The plate spring contacts 35a, 35b, 35 are made of a non-magnetic electrically insulating material and have a structure in which the winding assembly 32 and the contact assembly 35 are arranged close to each other on the left and right sides of both sides of b.
(c) has a fitting hole, an excitation winding core 381 fitting hole, and a through hole for a winding lead terminal (both not shown), and these positioning grooves are provided on the left and right sides of the widths of the yokes 34a and 34b, respectively. There are a total of four locations, and a post 304 of a container 300, which will be described later, is fitted into this groove. The contact assembly 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, and when the leaf spring contact 35c bends, the leaf spring contact 35a or 3
5b, and are inserted and erected on one surface of the substrate 30 so that the permanent magnet assembly 31 and the winding assembly 22 are located in a direction perpendicular to the direction in which the leaf spring contact bends. Protrude and secure the lead terminal on the other side. Next, the permanent magnet assembly 31
is a permanent magnet 23 and a yoke 34 of two magnetic plates standing in parallel with the magnetic pole face of this permanent magnet 23 sandwiched therebetween.
a and 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 34a, and the other to the yoke 34b. They are adhesively fixed to one end of each of the yokes 34b with a predetermined magnetic resistance to form an integrated structure. Also, yoke 3
The other ends 4a and 34b face each other with a space in which the contactor 36 can move. This permanent magnet assembly part 31
The yoke 29 is closely attached to the surface of the substrate 30 and erected in parallel with the contact assembly portion 35, and the yokes 34a and 34b face each other parallel to the movable direction of the leaf spring contact 35c. Next, the winding assembly 32 is attached to the core 38 of the magnetic bar.
1 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, and the other end becomes the rotation axis of the armature 36. This winding assembly 32 is connected to the through holes 291 and 292 of the yoke 29.
(shown in FIG. 2d) can be fixed to the substrate 30 together with the permanent magnet assembly 31 by fitting them together. Next, the movable armature 36 has the core 3 at one end.
It is a magnetic body with a shaft hole having a rotation axis 81 and an insulating card 37 fitted at the other end to move the leaf spring contact 35c. This armature 36 has one end rotatably attached to the upper end of the core 381, the other end located between the opposing tips of the yokes 34a and 34b, and a card fitted to the tip. 37 holds the tip of the movable leaf spring contact 35c with some play. When the armature 36 operates according to the same magnetic circuit and operating principle as described in FIG.
As a result, the contact 35c comes into contact with and separates from the contact 35a or 35b. Further, the container 300 is made of a non-magnetic material, and the bottom surface is provided with pull-out terminal through holes 301 for the contacts 35a and 35b,
A pull-out terminal through-hole 302 for the contact 35c and a pull-out terminal through-hole 303 for the winding 28 are provided to provide electrical insulation, and the lengths of the yokes 34a and 34b are adjusted to facilitate insertion of the assembled relay body. Four guiding columns 304 are provided perpendicularly to the bottom surface inside the side surface. In this second embodiment, electrical insulation only needs to be considered for the contact assembly 35 and the winding 28. Moreover, the movable armature 36 has a core 38 fitted to the substrate 30.
Although it was explained that the armature 36 pivots and rotates, the armature 36
is fitted into the core 381 and integrated into the core 381
When the armature is pivoted to the substrate 30 and rotates, the magnetic efficiency of the magnetic circuit in the armature 36 can be increased. In addition, although three leaf spring contacts are used in the contact assembly section, by providing a plurality of movable leaf spring contacts in addition to the structure of the card 37, the contact circuit combinations can be expanded to a greater variety, and the leaf spring contacts can be made into wire spring contacts. Sometimes further miniaturization can be achieved. Further, although the container 300 is shown as being sealed with an upper lid 310, if the upper lid is of an integrated structure and the bottom surface is removed, the relay body is assembled and then covered from above and the substrate 30 itself is closed to the container. The bottom part of the plate is sealed and the manufacturing process can be further reduced.

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. In FIG. 4, the same components as in FIGS. 2 and 3 are given the same numbers and symbols. Further, in this third embodiment, explanations of structures, configurations, functions, etc. other than those described below, which are the same as those of the second embodiment, will be omitted. First, the yoke 44a has one end in contact with the magnetic pole surface of the permanent magnet 23, the other end facing the yoke 34b, and the yoke 49 has a U-shaped terminal with one end cut out. Here, when no current is flowing through the excitation winding 28, the permanent magnetic flux 23 is transferred to the yoke 44a.
→Permanent magnet 23 → Lower part of yoke 34b → Yoke 4
9→winding core 381→movable armature 36 form one magnetic path, and connect the movable armature 36 to yoke 44
Attract to a. 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, when a current is applied to the excitation winding 28 and the magnetic flux flows from the movable armature 36 to the winding core 381 to the yoke 49 to the yoke 34b, the magnetic flux of the yoke 44a is canceled out by the magnetic flux flow of the permanent magnet 23, and the The armature 36 is attracted to the yoke 34b side. Therefore, the card 37 moves and the movable contact spring 35c separates 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 contactor 36 can be driven in a harmonic manner, so that the magnetic attraction force increases and the moving current value increases. decreases. Further, supplementary explanations regarding electrically insulating locations, pivoting locations for rotation of the armature, contact combinations, spring shapes, and container shapes are the same as those in the second embodiment. Furthermore, as shown in FIG. 4, the yoke 44a in this third embodiment has one end facing the yoke 34b and the other end 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 when

Next, as a fourth embodiment, when the yokes 24a and 29 of the permanent magnet assembly in the first embodiment are cut out as in the third embodiment shown in FIG. Connect with a conductor and electrically insulate from other members.

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 contacts and the lead-out terminals, such as conductive wires and printed wiring, respectively. or,
In FIGS. 2 and 3, the container has continuous ridges and is described as a column, but the same function can be achieved even if the container has a discontinuous shape.

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 assembled component, the length of the longest side can be reduced, reducing mounting restrictions, and it is also possible to integrate some parts and place each part in a direction almost perpendicular to the board. Since it can be assembled by inserting it, manufacturing and adjustment methods are simplified.
Not only can productivity be improved, but also the efficiency of the magnetic circuit can be improved because the magnetic circuit formed by the fixed magnetic bar and the magnetic body forms a closed circuit with the magnetic armature.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of the arrangement of magnetic circuit components of a conventional polarized relay, FIG. 2a shows a first embodiment of the polarized relay main body of the present invention, and FIG. Figures 2c and d show part of the container of
FIG. 3 is a perspective view showing a main body and a container as a second embodiment;
FIG. 4 is a perspective view showing only the main body as a third embodiment. 20, 30... Board, 21, 31, 41... Permanent magnet assembly parts, 22, 32, 42... Winding assembly parts, 23... Permanent magnet, 24a, 24b, 2
9, 34a, 34b, 44a, 49...Yoke (magnetic plate), 25, 25a, 25b, 35a, 35
b, 35c... Contact, 26, 36... Armature, 2
8...Winding, 35...Contact part, 37...Card (insulating piece), 200,300...Container, 204,3
04... Support (ridge), 281, 381...
Core (magnetic bar).

Claims (1)

[Claims] 1. A first magnetic plate flatly arranged on one main surface of an insulating substrate; one end is fixed to the first magnetic plate for magnetic coupling, and an armature is rotated to the other end. A magnetic rod that is movably fitted and serves as a rotation axis and is erected with respect to the main surface of the substrate; an excitation winding wound around this magnetic rod; and the armature between one opposing end. , and the other end of at least one of the first
second and third magnetic plates fixedly and magnetically coupled to the magnetic plate and standing upright in line with the magnetic bar and the winding; a magnetic pole tip is sandwiched between the second and third magnetic plates, respectively; a permanent magnet attached to the magnet; and the armature is selectively attracted to the second and third magnetic plates by the magnetic field generated by the magnet and the magnetic field generated by energizing the winding. A polarized relay characterized by comprising: a contact portion that closes and opens by moving; and; 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. A patent characterized in that the contact portion, which is closed and opened by the operation of the armature, is constituted by an elastic conductor that is erected 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 armature is made of a magnetic material up to at least the portion opposite to the second and third magnetic plates, and is fixed to the rotating end of the magnetic material and clamping the rotating end of the elastic conductor. 4. A polarized relay according to claim 3, further comprising a scissor-shaped insulating piece. 5 the armature, the magnetic bar, the second and third
2. The polarized relay according to claim 1, wherein the contact portion is provided on each of the magnetic plates. 6. On each surface in contact with the second and third magnetic plates on the inside of the container, an inner spacing that is substantially perpendicular to the arrangement surface of the substrate and that is substantially the same as the width of each of the second and third magnetic plates is provided. 2. A polarized relay according to claim 1, further comprising at least a pair of raised protrusions on a pair of parallel straight lines.