JPS6111874Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a multi-contact enclosed electromagnetic relay.

Generally, in this type of electromagnetic relay, contact sets performing the make contact function or the break contact function are each provided in a separate relay. However, in practical electromagnetic circuits, it is often necessary to use a relay that can perform both of the contact functions at the same time. For this purpose, a combination of a plurality of relays that can perform any of the contact functions described above has been used. However, configuring such an electromagnetic circuit not only increases the mounting area but also requires a plurality of drive circuits to operate each relay, complicating the circuit configuration.

The purpose of this invention was to solve these problems, and by providing a contact set that can perform the make contact and break contact functions in the same relay, it is compact and highly practical. An object of the present invention is to provide a multi-contact encapsulated electromagnetic relay.

The multi-contact encapsulated electromagnetic relay of the present invention has a substrate;
A plurality of iron cores fixed to the substrate; a fixed contact provided at the tip side of the plurality of iron cores, and a movable contact provided opposite to the fixed contact; and a plurality of iron cores sealed in a common enclosure. a contact set; a first drive winding commonly wound around all of the plurality of cores between the substrate and the enclosure; a first driving winding wound between the plurality of cores between the substrate and the enclosure; Some of the cores are magnetically in the same direction as the first drive winding, and the remaining cores of the plurality of cores are magnetically in the same direction as the first drive winding. a second drive winding that is continuously wound in opposite directions; when a predetermined current is simultaneously applied to the first and second drive windings, the generated magnetic field in the same direction causes the plurality of The present invention is characterized in that some of the contact groups are closed, and the remaining contact groups of the plurality of contact groups are opened by a magnetic field in a different direction.

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B are cross-sectional views showing an embodiment of the multi-contact electromagnetic relay of the present invention. still,
FIG. 1B is a sectional view taken along line X--X in FIG. 1A.

In the figure, reference numerals 1a and 1b are iron cores made of semi-hard magnetic material and serving as both a magnetic circuit and a signal terminal, and the contacts can be self-retained by residual magnetic flux. 2 is a fixed contact cap fixed to the upper end of the iron cores 1a and 1b, 3 is a fixed contact fixed to the upper surface of the fixed contact cap 2 by welding, etc., and 4 is a movable contact (not shown) on the surface opposite to the fixed contact 3. ) and is fixed to a movable spring 5, and the movable spring 5 is fixed to an independent signal plate 6. Reference numeral 7 indicates an enclosure which is fixed to the peripheral edge of a metal substrate 8 by welding and seals the fixed contact 3, movable piece 4, etc. together with an inert gas, and 9 is made of glass and includes a fixed contact cap 2 or a signal cap 15 and the metal substrate. 8
10 is a first drive winding commonly wound around the iron cores 1a and 1b, and 11a and 11b are separate windings for the iron cores 1a and 1b, respectively. The second drive winding is wound around the second drive winding. The winding directions of the second drive windings 11a, 11b with respect to the iron cores 1a, 1b are opposite to each other, and these second drive windings 11a, 11b are continuous windings. 13 is the first drive winding 10 and 14
are lead terminals of drive windings 11a and 11b,
It is fixed to the board 12 by soldering. The board 12 is a printed iron board made of an iron plate coated with an insulating coating and printed with circuit conductors, or a printed board made of glass epoxy material. A signal cap 15 and a signal terminal 16 are connected to the movable piece 4 via an independent signal plate 6 fixed to the upper part of the signal cap 15. The iron cores 1a, 1b and the signal terminal 16 pass through the substrate 12 and are fixed at a connecting portion 17 by soldering. Further, symbols A and B in the figure indicate contact sets each consisting of a fixed contact 3 and a movable piece 4.

When selectively opening and closing the contact sets A and B in the multi-contact independently encapsulated electromagnetic relay configured as described above, the drive current supplied through the circuit conductor printed on the board 12 is changed to match the first one. Drive winding 10 and second drive windings 11a, 11b
is applied to Each contact set can be selectively opened and closed by the action of the magnetic field generated thereby. This operation will be described in detail below with reference to FIGS. 2 and 3.

2 is a connection diagram of the contact set in FIGS. 1A and 1B, and FIG. 3 is a connection diagram of the drive winding in FIGS. 1A and 1B. As shown in Figure 2, a predetermined current is usually applied to each drive winding, and contact set A is initially in the open state (shown by the dotted line) and contact set B is initially in the closed state (shown by the dotted line). It is set.

Now, as shown in FIG. 3, if a driving pulse P1 is applied between the input and output terminals a and a' and a driving pulse P2 is applied between the input and output terminals b and b' at the same timing, the first driving winding 10 Generates a magnetic field in a certain direction, but the second
Since the winding directions of the drive windings 11a and 11b are opposite to each other, magnetic fields are generated in different directions. Here, the drive pulse P1 causes the first drive winding 10 to
Assuming that H1 is the magnetic field generated in the second drive windings 11a and 11b by the drive pulse P2, and H2 is the magnetic field generated in the second drive windings 11a and 11b by the drive pulse P2, and the magnitude of the magnetic field is in the relationship H2>H1, the contact set A in FIG. It is closed and held by a positive superimposed magnetic field of H1+H2. On the other hand, contact set B opens due to the negative superimposed magnetic field of H1-H2. Next, a driving pulse P is applied between the input and output terminals a and a'.
1 is applied between the input and output terminals b and b' at the same timing, magnetic fields H1 and H2 of the same magnitude as above are generated in the first drive winding 10 and the second drive windings 11a and 11b, respectively. occurs. Therefore, contact set A changes from the closed state to the open state due to the negative superimposed magnetic field of H1-H2, while contact set B changes from the open state to the closed state due to the positive superimposed magnetic field of H1+H2. In this way, contact set A can perform the make contact function, and contact set B can perform the break contact function.

In the embodiments described above, a case has been described in which there is one make contact set and one break contact set, but it is also possible to implement the case in which a plurality of these are provided.

As described above, according to the present invention, a common winding that always generates a magnetic field in a fixed direction and a plurality of windings that generate magnetic fields in different directions are provided, and a predetermined current is simultaneously applied to these windings. By doing so, it is possible to obtain a multi-contact electromagnetic relay that can simultaneously close and open a plurality of contact sets. Furthermore,
According to the electromagnetic relay of the present invention, an electromagnetic circuit can be constructed without increasing the mounting area, which is economical.

[Brief explanation of the drawing]

1A and 1B are cross-sectional views showing one embodiment of the present invention, FIG. 2 is a connection diagram of a contact set, and FIG. 3 is a
FIG. 3 is a wiring diagram of drive windings. 1a, 1b... iron core, 2... fixed contact cap, 3... fixed contact, 4... movable piece, 5... movable spring, 6... independent signal plate, 7... enclosure container, 8...
...Metal substrate, 9...Insulator, 10...First drive winding, 11a, 11b...Second drive winding, 12
... Board, 13, 14 ... Output terminal, 15 ...
Signal cap, 16... signal terminal, 17... connection section.

Claims (1)

[Scope of Claim for Utility Model Registration] A substrate; a plurality of iron cores fixed to the substrate; a fixed contact provided on the tip side of the plurality of iron cores; and a movable contact provided opposite to the fixed contact. , a plurality of contact sets sealed in a common enclosure; a first drive winding commonly wound around all of the plurality of cores between the substrate and the enclosure; the substrate and the between the enclosure container and a part of the plurality of cores, magnetically in the same direction as the first drive winding, and for the remaining cores of the plurality of cores, a second drive winding that is continuously wound in a magnetically opposite direction to the first drive winding; and a predetermined current is simultaneously applied to the first and second drive windings. is applied, and some of the contact groups of the plurality of contact groups are closed by the generated co-directional magnetic field,
A multi-contact enclosed electromagnetic relay characterized in that the remaining contact sets of the plurality of contact sets are opened by a magnetic field in a different direction.