JPH0412578B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Field of the Invention>> This invention relates to a relay equipped with a pair of contact sections, in which each contact is switched and disconnected depending on the non-excited state of the coil and the polarity of the excitation current flowing through the coil. This invention relates to a relay that allows one relay to perform three operations including a state.

<<Background of the Invention>> In an electromagnetic relay equipped with a pair of contacts, one contact is conventionally disconnected and the other contact is connected when the electromagnet is in an energized or de-energized state. There was nothing that could break the contact between the two sides.

Therefore, in order to perform the three operations of switching each contact and turning off all of the contacts, at least two
It was necessary to use a combination of two or more relays and connect them electrically.

<<Object of the Invention>> An object of the present invention is to enable one relay to perform three operations: switching each contact and disconnecting all contacts.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention provides an electromagnet having an iron core provided with a coil on the outer periphery, and a pair of iron pieces integrated on the left and right sides of this iron core. a pair of movable iron pieces with their tips facing between the iron core and the iron pieces; and a pair of permanent magnets assembled to the base of each movable iron piece and having both poles connected to each movable iron piece. The pole pieces are arranged so that the polarities of the respective magnets are different from each other, each armature is connected to each opposing contact portion via an actuator, and each armature is attached to one iron side by a spring means. By magnetizing the iron pieces to the same polarity and magnetizing the iron core to different polarities according to the polarity of the excitation current flowing through the coil of the electromagnet, one of the contact parts is kept in a disconnected state by The armature is attracted to the other iron side against spring pressure, and the contact portions of each armature are selectively brought into contact with each other.

With the above configuration, in the non-excited state of the electromagnet, each armature is held in contact with one iron side of the electromagnet, and in the energized state, one of the armatures is held in contact with one iron side of the electromagnet. It is attracted to the iron piece on the other side.

Therefore, if the contact portions connected to each armature are provided facing each other and the contact portions are brought into contact and separated according to the alternate movement of each armature, the switching and disconnection states of each contact can be changed in three ways.
The operation can be performed with one relay.

<<Description of Embodiments>> FIG. 1 shows a relay to which the present invention is applied.

In the figure, this relay is composed of an electromagnet 2 provided on one longitudinal side of an insulating terminal block 1, and a contact mechanism section.

The electromagnet 2 caulks the rear end of the iron core 3 to the rear end side of the yoke (not shown), wraps a coil 4 around the outer periphery of the electromagnet 2, and further caulks the rear end of the iron core 3 to the left and right of the tip of the iron core 3 at the end extension of the yoke. It is formed by standing up a pair of iron pieces 6 and 7 in a U-shape, and depending on the polarity of the current flowing through the coil 4, each iron piece 5 and 6 can be set to the same polarity, either N or S. The core 3 is magnetized to different polarities.

The contact mechanism section includes first and second armatures 7 and 8 that are arranged above and below to face the tip of the electromagnet 2.
and a pair of first and second movable pieces 9, 10 which are provided substantially parallel to the side of the electromagnet 2 and whose swing ends are linked to the first armature 7, and each movable piece 9,
10, and a third movable piece 11 whose swing end is connected to the second armature 8.

The first armature 7 is connected to a pair of movable iron pieces 12, 13 with its tip positioned between the iron core 3 and each of the iron pieces 5, 6, and to the base side of each of the movable iron pieces 12, 13, And both poles are connected to each movable iron piece 12,
13, a housing 15 in which the bases of these movable iron pieces 12, 13 and the permanent magnet 14 are assembled together;
The actuator 16 protrudes from one side of the movable piece 5 and is coupled to the swinging ends of the first and second movable pieces 9 and 10.

Further, the second armature 8 is connected to the first armature 7.
Similarly, a pair of movable iron pieces 17 and 18, a permanent magnet 19 integrated into the base of the movable iron piece, a housing 20 in which these are combined together, and a third movable iron piece protruding from one side of the housing 20. Piece 1
The actuator 21 is connected to the swing end of the actuator 1.

The permanent magnets 14 and 19 provided in each of the first and second armatures 7 and 8 have polarities opposite to each other.
The tips of each movable iron piece in are magnetized with opposite polarities in the upper, lower, left, and right directions.

Further, each of these armatures 7, 8 is held by guide members 23, 24 provided on one side of the electromagnet 2, and the respective actuators 16, 21 are held by guide members 23, 24 provided on one side of the electromagnet 2.
By penetrating the movable pieces 4, the movable pieces 9, 10, and 11 can be slid, and are always biased toward one of the iron pieces 5 due to the spring properties of the movable pieces 9, 10, and 11.

As a result, in the non-excited state, each movable piece 9, 10, 11 is arranged at a predetermined distance, and as shown in FIG.
10a and 11a are in an open state.

To drive the contact from this state, for example, the third
As shown in the figure, depending on the direction of the excitation current flowing through the coil 3, the tip of the iron core 3 is magnetized to the north pole, and the iron pieces 5 and 6 on both the left and right sides thereof are magnetized to the south pole, then the second armature 8 remains attracted to the side of the iron piece 5, while the first armature 7, since its polarity is the same, repulses and resists the spring pressure of each movable piece 9, 10 to attract the iron piece on the other side. Attracted to 9.

As a result, the third movable piece 11 and the first movable piece 9
The contacts 11a and 9a in between are in contact with each other, and the contact between them is closed.

When a current in the opposite direction is passed through the coil 4 from this state, the iron core 3 is magnetized to the south pole, and the iron pieces 5 and 6 at both ends thereof are magnetized to the north pole, as shown in FIG.

As a result, the first armature 7 is attracted to the iron piece 5 side and returns to its original position, contrary to the above, and the second armature 8 is repelled and moves to the other side against the spring pressure of the movable piece 11. It is attracted by the iron piece 6 on the side, and this time the third movable piece 11
The contacts 11a and 10 of the second movable piece 10 come into contact with each other, thereby closing the space between the two contacts.

In other words, in this embodiment, in the non-excited state, each contact is in a disconnected state,
Depending on the polarity of the excitation current flowing through the coil, one of the contacts is selectively brought into contact.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a relay according to the present invention, Fig. 2 is a perspective view of a relay according to the present invention;
4 to 4 are explanatory views of the operation of the relay when it is not driven and when it is driven. 2... Electromagnet, 3... Iron core, 4... Coil,
5, 6... Iron piece, 7, 8... Armature, 9, 10,
11... Movable piece, 9a, 10a, 11a... Contact, 12, 13, 17, 18... Movable iron piece, 1
4, 19...Permanent magnet, 16... Actuator.

Claims (1)

[Claims] 1 Opposing an electromagnet comprising an iron core with a coil on its outer periphery and a pair of iron pieces integrated on the left and right sides of this iron core, a pair of iron pieces with their tips facing between the iron core and the iron pieces A pair of armatures consisting of a movable iron piece and a permanent magnet assembled to the base of each movable iron piece and having both poles coupled to each movable iron piece are arranged such that the polarities of the respective magnets are different from each other, The pole is connected to each opposing contact portion through an actuator, and each armature is biased toward one iron side by a spring means to maintain the contact portions in a disconnected state, and the above-mentioned By magnetizing each iron piece to the same polarity and the iron core to different polarities according to the polarity of the excitation current flowing through the electromagnet coil, one armature is attracted to the other iron side against the spring pressure, A relay characterized in that the contact portions of each armature are brought into selective contact.