JPH04272630A - Polarized electromagnetic relay - Google Patents

Abstract

PURPOSE:To provide a downsized/low manufacturing cost polarized electromagnetic relay into which two electromagnetic relays are integrated in the polarized electromagnetic relay suitable for controlling automobile electrical equipment and/or the like accompanying reciprocal rotation of a motor or reciprocal operation of a plunger. CONSTITUTION:A polarized electromagnetic relay is provided with one base block 1, one yoke 5, one permanent magnet 10, one magnetic pole piece 11, two movable iron cores 9 and 9', two coils 7 and 7', two movable contact point springs 2 and 2' having movable contact points 2a and 2a' and fixed contact point springs 3 and 4 equipped with fixed contact points 3a, 3a', 4a and 4a' arranged so as to be opposed to the movable contact points, and is constituted of two electromagnetic relays.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarized electromagnetic relay suitable for controlling automobile electrical components and the like involving forward and reverse rotation of a motor and forward and reverse operation of a plunger.

0002

[Prior Art] In recent years, as automobiles have become more sophisticated, various automobile electrical components have been developed. It is used for control.

[0003] Conventionally, there has been a device in which two electromagnetic relays are integrated in order to control the forward and reverse rotation of a motor or the forward and reverse operation of a plunger.

0004

[Problems to be Solved by the Invention] However, in the conventional type described above, only the base block etc. of the two electromagnetic relays are shared, and the terminal arrangement is considered to be advantageous for wiring. However, there were problems in that the electromagnetic relay was not advantageous in terms of miniaturization, manufacturing cost, etc.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a polarized electromagnetic relay incorporating two electromagnetic relays that is compact and low in manufacturing cost.

[0006]

[Means for Solving the Problems] A means for solving the above problems is to make the outside of the base block, the yoke, the permanent magnet, and the magnetic pole pieces common, and to create a movable contact spring equipped with a movable iron core, a coil, and a movable contact. , a fixed contact spring with a fixed contact is provided separately.

[0007]

[Operation] According to the above-mentioned means, the yoke, the permanent magnet, the magnetic pole piece, and one movable iron core constitute one magnetic circuit, and the movable contact is interlocked with the movable iron core depending on whether the movable iron core is energized or de-energized. contacts or does not contact the fixed contact. In addition, the yoke, the permanent magnet, the magnetic pole piece, and another movable core constitute one magnetic circuit, and when the movable core is energized or de-energized, a movable contact interlocked with the movable core comes into contact with a fixed contact or There will be no contact. In other words, it functions as two electromagnetic relays.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an exploded perspective view showing one embodiment of a polarized electromagnetic relay according to the present invention, and FIG. 2 is an assembled perspective view of the polarized electromagnetic relay of FIG. 1 after being assembled.

In FIGS. 1 and 2, reference numeral 1 denotes a base block, and two sets of contact springs, ie, movable contacts 2a,
Movable contact springs 2, 2' having a break fixed contact 3a, a break fixed contact spring 3 having a make fixed contact 4a, a make fixed contact spring 4, and a break having a break fixed contact 3a' and a make fixed contact 4a'. A fixed contact spring 3' and a make fixed contact spring 4' are implanted and fixed.

5 is a yoke. 6, 6' are coils 7, 7
′, and these four protruding parts 6
a, 6b, 6a', 6b'(6b' is not shown) are four holes 5a, 5b, 5a provided in the yoke 5, respectively.
', 5b' and the four holes 1a, 1b, 1a', 1b' provided in the base block 1. The coil portions 6, 6' and the yoke 5 are fixed to the base block 1 by hot caulking or the like on the portions protruding from the bottom surface of the base block 1. In addition, the terminal portion 6 of the coil portion 6, 6'
c and 6c'(6c' is not shown) are also led out to the bottom surface of the base block 1 through holes provided in the yoke 5 and the base block 1, respectively.

8 and 8' are cards, and these holes 8
a, 8a' face the front ends of the coil parts 6, 6', and these grooves 8b, 8b' are mounted so as to engage with the movable springs 2, 2'.

Reference numerals 9 and 9' denote movable iron cores, which pass through the coil parts 6 and 6' through holes 5c and 5c' provided in the yoke 5, and are inserted through holes 8b and 8b' in the cards 8 and 8'. It is installed.

Further, the permanent magnet 10 and the magnetic pole piece 11 are attached to the movable iron cores 9, 9' inserted through the card holes 8b, 8b'.
It is arranged at a predetermined position near the tip of the base block 1, the yoke 5, and the flanges of the coil parts 6 and 6'.

Finally, adhesive is injected from the back side of the base block 1 to seal the terminal holes of the coil terminal 6c and each spring terminal, and to fix each terminal to the base block 1, as shown in FIG. , a polarized electromagnetic relay will be assembled.

The operation of the polarized electromagnetic relay shown in FIG. 2 will be explained with reference to FIG. 3. A case will be described in which the polarized electromagnetic relay according to the present invention is applied to control the forward and reverse rotation of the motor M.

The state shown in FIG. 3A shows the case where both coils 7 and 7' are in a non-excited state. In this case, a magnetic circuit shown by a solid line is formed by the permanent magnet 10, and the movable cores 9, 9' are attracted to the magnetic pole piece 11. Therefore, the movable contact springs 2, 2' are in the state shown in FIG. 3(B), and the motor M is in a stationary state since no power is applied thereto.

The state shown in FIG. 3C shows the case where only the coil 7' is excited. In this case, this excitation generates a magnetic flux shown by the dotted line in the figure, and the tip of the movable iron core 9' is connected to the pole piece 11.
The movable iron core 9' becomes the same polarity and repulses, and is attracted to the yoke 5 side. As a result, the movable contact spring 2' is operated by the card 8'. On the other hand, since the coil 7' is in a non-excited state, the movable core 9 is moved by the magnetic flux of the permanent magnet 10 as shown in FIG. 3(A).
maintain the state of Therefore, the connection circuit for motor M is shown in Figure 3.
The state shown in (D) is reached, and the motor M is supplied with power and rotates in the forward direction. Furthermore, if the excitation of the coil 7' is released, Figure 3(A)
, (B), and the motor M stops.

The state shown in FIG. 3E shows the case where only the coil 7 is excited. In this case, this excitation generates a magnetic flux shown by the dotted line in the figure, and the tip of the movable core 9 becomes the same polarity as the magnetic pole piece 11 and repels, and the movable core 9 is attracted toward the yoke 5 side. As a result, the movable contact spring 2 is operated by the card 8. On the other hand, since the coil 7' is in a non-excited state, the movable iron core 9' maintains the state shown in FIG. 3A due to the magnetic flux of the permanent magnet 10. Therefore, the connection circuit for motor M is shown in Figure 3 (F).
In this state, the motor M is supplied with power and rotates in the reverse direction. In addition, if the excitation of the coil 7 is released, Figs. 3(A) and (B)
The state returns to , and the motor M stops.

The state on the left side of FIG. 3(G) is when coils 7 and 7' are excited simultaneously, or when coil 7' is further excited while coil 7 is being excited, or when coil 7' is not excited. The case is shown in which the coil 7 is further excited when the In this case, if the coil 7' is excited to excite the coil 7 while the motor M is rotating in the forward direction, the motor M will be powered off and stopped, as shown in FIG. 3(H), and
If the coil 7' is energized while the motor M is rotating in the reverse direction by energizing the coil 7, the motor M will be powered off and stopped, as shown in FIG. ' are excited at the same time, the motor M is in a stopped state.

Furthermore, when the coils 7 and 7' are excited at the same time, when one of them is de-energized,
The state in which the coil 7 or 7' is energized, that is, the state shown in FIG. 3 (
C), (D), or the states shown in FIGS. 3(E) and (F), and the motor M rotates forward or backward.

When used for forward/reverse control of the motor M shown in FIG. ' can also be made into one part.

[0022]

[Effects of the Invention] As explained above, according to the present invention, two
Since many of the parts of the two electromagnetic relays are made common, the polarized electromagnetic relay can be made smaller and the manufacturing cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of a polarized electromagnetic relay according to the present invention.

FIG. 2 is an assembled perspective view of the polarized electromagnetic relay of FIG. 1 after being assembled;

FIG. 3 is a diagram illustrating the operation of the polarized electromagnetic relay shown in FIG. 2;

[Explanation of symbols]

1...Base block 2, 2'...Movable contact spring 3, 3'...Break fixed contact spring 4, 4'...Make fixed contact spring 5...Yoke 6, 6'...Coil part 7, 7'...Coil 8,8'...card 9,9'...Movable iron core 10...Permanent magnet 11...Magnetic pole piece

Claims (1)

[Claims] Claim 1: One base block (1), one yoke (5) provided on the base block, one permanent magnet (10) attached to the yoke, and the permanent one magnetic pole piece (11) attached to a magnet; two movable iron cores (9, 9') each having one end fixed to the yoke and the other end facing the magnetic pole piece; Two coils (7, 7') wound around an iron core, two movable contact springs (2, 2') having movable contacts (2a, 2a') that interlock with each of the movable iron cores, and each of the movable A polarized electromagnetic relay comprising: fixed contact springs (3, 3', 4, 4') provided with fixed contacts (3a, 3a', 4a, 4a') arranged opposite to the contacts.