JPS6042572B2 - polarized relay - Google Patents

Description

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

Conventionally, in this type of polarized relay, a coil block having an upwardly protruding magnetic pole and a contact block in which a contact group is molded at the same time are combined, and a bearing plate is interposed on the combined body to form two parallel An armature block having an armature is mounted, and the armature block is rotated by exciting a coil of a coil block to open and close the contacts on the contact block.

However, since the center of the contact spring is fixed to the common terminal at the center of both sides of the contact block and is pushed forward by the card of the armature block, the contact spring's movable contact and the fixed contact of the contact block It was not possible to provide sufficient air gaps, and especially when the polarized relay was made small, a high withstand voltage could not be obtained, making it impossible to apply it to high-capacity switching. The present invention aims to eliminate the above-mentioned drawbacks and provide a high-voltage, high-capacity polarized relay.

The present invention will be explained below with reference to the drawings. 1 to 3, a coil block 1 is held on a support frame 2, and a coil 5 is wound around a U-shaped yoke 3 whose both ends protrude as magnetic poles 4, 4. Coil lead-out terminals 6, 6 are provided on the upper surface of both ends to extend outward.

Furthermore, the outer ends of the magnetic poles 4, 4 are provided so as to slightly bulge out from the end surface of the support frame 2, and engaging protrusions 7, 7 are provided on both side surfaces, respectively. 1 is a contact block provided with a recess 9 in which the coil block 1 can be accommodated, and fixed contact terminals 10, 1 whose upper ends protrude on both upper surfaces.
0, 11, and 11 are molded at the same time, and coil terminals 12 and 12 are molded at the same time, and the upper surfaces of both end portions are cut out and the upper end portions are exposed. The tips of 6 and 6 are formed to match.

Further, the downwardly protruding ends of the contact terminals 10, 10, 11, 11 and the coil terminals 12, 12 are aligned in two rows on both sides. Furthermore, recesses 13, 13 for receiving the outer ends of the magnetic poles 4, 4 are provided at the inner upper edge of the end face of the contact block u.
is formed, and a recess 14 for engaging the engaging protrusions 7, 7 is formed on the inner surface corresponding to the side surface on which the engaging protrusions 7, 7 are provided.
, 14 are provided oppositely. 15 is the coil block ±
This is a bearing plate in which notches 16, 16 are formed corresponding to the magnetic poles 4, 4 protruding from the bearing plate, and a shaft 17 is implanted in the center.

±u An armature block whose both ends are loose with the magnetic pole pieces 4, 4, a pair of armatures 19, 19 are made parallel, and a shaft hole 20 through which the shaft 17 is inserted is bored in the center, and the shaft hole 20 A bearing piece 22 having locking protrusions 21, 21 projecting therebetween is integrated, and is provided on both sides of the bearing piece 22 at a distance from the bearing piece 22 and with respect to the longitudinal direction of the armatures 19, 19. Card pieces 23, 23 protruding outward in the right angle direction are integrated.

24, 24 are recesses 25, 25 with the bearing piece 22 in between.
The permanent magnet 26 is an I-shaped contact spring, and the engagement holes 27, 27 that match the projections 21, 21 are provided in the center of the permanent magnet.
is provided, and fixed contact terminals 10 are provided at each end on both sides.
, 11 are fixedly connected to each other.

Reference numeral 29 denotes a cover, the lower edge of which is brought into contact with and fixed to the stepped portion 30 of the contact block u.

Then, the coil block ± is fitted into the recess 9 of the contact block u, and the contact spring 26 is attached to the shaft 17 of the bearing plate 15 on the above-mentioned assembly through the locking protrusions 21, 21 by thermal caulking or the like. A polarized relay can be assembled by mounting the armature block ±■ and attaching the cover 29, and by energizing the coil 5, the armature block 18
The movable contact 28 of the contact spring 26 connected to and cooperating with the armature block 18 can be opened and closed by rotating the armature block 18.

In this case, the contact spring 26 has two symmetrical parts across its center.
Since the movable contact 28 contacts and closes the fixed contacts of the fixed contact terminals 10 and 11, and the other two movable contacts 28 are separated from the fixed contacts of the fixed contact terminals 10 and 11, the contact gap is equal to the contact spring. The sum of the gaps between each movable contact 28 and the fixed contact that are continuous through the central part of 26, that is, twice the gap between each movable contact 28 and the fixed contact, makes it possible to obtain sufficient withstand voltage characteristics. .

FIGS. 4 to 6 show another embodiment of the present invention, in which the armature block 1a is not provided with a card part, and the armature 19a is simply attached to the bearing part 23a.
, 19a, and a pair of locking protrusions 21a, 21a are provided on both sides of the bearing piece 23a, respectively.

On the other hand, the contact springs 26a, 26a'' are divided into two, and have a pair of engagement holes 27 that match the locking protrusions 21a, 21a.
a, 27a'' so that they can be attached to each side of the bearing piece 23a. Also, the contact spring 26a
, 26a'' is bent into an L-shape, with one end extending from the outside of the fixed contact terminal 10a and the other end extending from the outside of the fixed contact terminal 1.
It is provided so that it can be contacted from inside 1a. The other configurations are substantially the same as the embodiment shown in FIGS. 1 to 3. However, in this embodiment, the armature block 1Ua
is rotated, the two movable contacts 28a of one contact spring 26a are simultaneously opened, and the other contact spring 26a is opened simultaneously.
The two movable contacts 28a'' of a'' are closed at the same time, and the contact gap can be doubled, similar to the embodiment shown in FIGS. 1 to 3. Further, in this case, each contact spring 26a extends across both fixed contact terminals 10 and 11 of different polarities.
, 26a'' are brought into contact, and the movable contacts 28a, 28a'' are simultaneously connected to fixed contact terminals 10 and 11 of different polarities.
Since the electrodes are opened or closed, it is also possible to sufficiently separate the different electrodes and obtain high withstand voltage characteristics between the different electrodes. FIG. 7 shows yet another embodiment of the present invention, in which L-shaped contact springs 26b, 26b'' are connected to an armature block 1Ub with a shaft 17b in between.
The four movable contacts 28b, 28b'' of each contact 26b, 26b'' are opened or closed simultaneously.

The other configurations are the same as those of the embodiment shown in FIGS. 4 to 6, and the same functions and effects can be obtained. According to the polarized relay of the present invention configured as described above, the withstand voltage characteristics can be greatly improved, and in addition, high withstand voltage characteristics between different poles can be obtained, and even when miniaturized, it is suitable for high capacity. Achieve remarkable effects such as:

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the polarized relay of the present invention;
2 is an internal plan view of the same, FIG. 3 is a vertical sectional view showing the same part from the side, and FIGS. 4 to 6 and 7 show other embodiments of the present invention, respectively. ±... Coil block, 2... Support frame,
3...Yoke, 4...Magnetic pole, 5...
・Coil, 6... Coil extraction terminal, 7...
...Engagement protrusion, U...Contact block, 9...
... recess, 10, 11 ... fixed contact terminal, 1
2... Coil terminal, 13... Recess, 14...
... Recessed part for insertion, 15 ... Bearing plate, 16
...Notch, 17 ... Axis, ±■ ... Armature block, 19 ... Armature, 2
0...Shaft hole, 21...Locking protrusion, 22...
...Bearing piece, 23... Card piece, 24
...Permanent magnet, 25...Concavity, 26...
...Contact spring, 27...Engagement hole, 28...
...Movable contact, 29...Cover, 30...
・Danbe.

Claims (1)

[Claims] 1. An armature block whose both ends are loosely engaged with the magnetic poles is rotatable on a combination of a coil block having an upwardly protruding magnetic pole and a contact block having fixed contact terminals implanted therein. In a polarized relay that rotates the armature block and opens and closes the contacts by energizing the coil of the coil block, the movable parts are electrically connected to each other and can make contact with the fixed contact terminals. A relay characterized in that a contact spring having contacts at both ends is attached to an armature block. 2. The polarized relay according to claim 1, wherein the contact spring is formed in an I-shape, and the center portion thereof is connected to the center portion of the armature block. 3 One end is bent into an L shape, and the movable contact at one end is provided so as to be able to contact a fixed contact terminal from the outside, and the movable contact at the other end is capable of contacting another fixed contact terminal from the inside, and the armature block is A polarized relay according to claim 1, comprising a pair of contact springs attached to each side.