JPS6177307A - Electromagnet apparatus - Google Patents

Abstract

PURPOSE:To make structure simple and miniature, by providing with an armature block and electromagnet block, and by uniting both the blocks so that each magnetic pole at each end of the iron core can be inserted in respective gaps defined between armature sections. CONSTITUTION:An electromagnet apparatus comprises of an armature block 1 and an electromagnet block 2. The armature block 1 comprises of two magnetic members 3, 4 between which put magnetizing sides of a permanent magnet 5. One magnetic member 3 has armature sections 3a, 3b extending vertically from the diagonal end positions respectively, while the other magnetic member 4 being in twisting relation to the one magnetic member 3 also has armature sections 4a, 4b extending vertically from the diagonal end positions. The electromagnet block 2 includes an iron core 6, around which a coil 7 is wound and which has magnetic poles 6a, 6b at both the ends. The armature block 1 and the electromagnet block 2 are united so that the magnetic poles 6a, 6b can be inserted in gaps defined between the armature sections 3a and 4b and between the armature sections 3b and 4a respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electromagnet device used for opening and closing contacts of a polarized relay.

[Background technology]

Conventionally, polarized relays have mainly used electromagnetic devices that combine an E-shaped electromagnetic block and a U-shaped armature block. However, in order to improve the accuracy of such an electromagnetic device, the structure becomes complicated, and the cost of constructing a relay also increases. Furthermore, it was difficult to miniaturize the device.

[Purpose of the invention]

In view of the above, an object of the present invention is to provide an electromagnetic device that is small in size and has a simple structure. The body pieces sandwich the permanent magnet from both sides in the direction of magnetization.
An armature part is provided that extends in one direction in the clamping direction from the diagonal position of one magnetic piece, and also extends in the same direction from the diagonal position of the other magnetic piece that has a torsional positional relationship. comprising an armature block provided with an extending armature portion and an electromagnet block having an iron core around which a coil is wound,
Both blocks are combined so that the magnetic pole parts at both ends of the iron core are inserted into the gaps existing between the armature parts, and either the armature block or the iron core moves due to a change in the excitation polarity of the coil. The gist is an electromagnetic device that looks like this. Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a first embodiment of the invention. As seen in the figure, this electromagnet device includes an armature block 1 and an electromagnet block 2. The armature block 1 is made up of two magnetic pieces 3 and 4 sandwiching a permanent magnet 5 from both sides in the direction of magnetization.

Armature portions 3a and 3b are provided extending from the diagonal position of one magnetic material piece 3 in one of the sandwiching directions (vertical direction in the figure), and the other magnetic material piece is in a twisted positional relationship with the armature portions 3a and 3b. Armature portions 4a and 4b extending in the same direction from the diagonal position of 4
is provided.

In this invention, the twisting positional relationship is the same as "two straight lines are in a twisted positional relationship", and for example, refers to a state in which rod-shaped objects are "crossing over each other. In other words, The straight line that connects the diagonal positions of one magnetic piece 3 and the straight line that connects the diagonal positions of the other magnetic piece 4 have a twisted positional relationship (there is no ζ between the magnetic pieces 3 and 4). Since the permanent magnet 5 is sandwiched between them, the two straight lines naturally do not intersect).

The electromagnetic block 2 has an iron core 6. A coil 7 is wound around the iron core 6, and magnetic pole parts 6a and 6b are provided at both ends. The magnetic pole parts 6a and 6b each serve as the armature part 3a.
The armature block I and the electromagnet block 2 are introduced to each other so as to be inserted into the gaps that exist between the armature parts 3b and 4b and between the armature parts 3b and 4a. In this example, as the excitation polarity of the coil 7 changes, the armature block 1 swings about a part of the coil frame 8 around which the coil 7 is wound as a fulcrum.

An example of the combination of the armature block 1 and the electromagnet block 2 in this case is shown in FIG. Note that illustration of the permanent magnet and another magnetic piece is omitted. As shown in the figure, protruding magnetic pole parts 8a and 8b are provided in the coil frame 8, holes are provided in the corresponding portions of the magnetic material piece 3, and the protruding parts 8a and 8b are inserted into the holes respectively. 1.2
are combined. In this case, the armature block 1 swings using the tips or bases of the protruding magnetic pole parts 8a, 8b of the coil frame as fulcrums.

This operating state is shown in FIG. 3 fat, fbl.

As shown in FIG. 3, when current is passed through the coil 7 to excite the magnetic pole part 6a7i to the north pole (not shown, the magnetic pole part 6b is the south pole), the magnetic pole part 6a and the armature part 4b
, 3a (not shown, but between the magnetic pole portion 6b and the armature portions 3b and 4a) and different polarity attraction, the armature block 1 is moved to a part of the coil frame 8 (protruding The tips of parts 8a and 8b) are used as fulcrums to swing to the left in the figure.
It will be in a state like l. Even if the current in the coil 7 is set to O and the magnetic flux of the electromagnet is set to 0, a closed magnetic path due to the magnetic flux of the permanent magnet 5 (permanent magnet N pole → magnetic piece 4-1 armature part 4a - magnetic pole part 6
b - iron core 6 - magnetic pole part 6a - armature part 3a - magnetic piece 3 - permanent magnet S pole), so this state is maintained. Next, as shown in FIG. 3 (bl), when a current is passed through the coil 7 in the opposite direction to the previous direction and the magnetic pole part 6a is excited to the S pole (although not shown, the magnetic pole part 6b is the N pole), the magnetic pole part 6a and the armature portions 3a, 4b (not shown, but between the magnetic pole portion 6b and the armature portions 4a, 3b), the armature block l is moved to the coil frame by homopolar repulsion and unlike polarity attraction. 8 (tips of protrusions 8a and 8b) as a fulcrum and swings to the right in the figure, resulting in the state shown in the figure (bl).The current in the coil 7 is set to 0, and the magnetic flux of the electromagnet is set to 0. However, permanent magnet 5
A closed magnetic path due to the magnetic flux (Permanent magnet N pole - Magnetic piece 4 - Armature part 4b - = Magnetic pole part 6a - Iron core 6 - Magnetic pole part 6b - Armature part 3b = Magnetic material piece 3 - Permanent magnet S pole) Since it is formed, it maintains this state. That is, the electromagnetic device of the first embodiment is of a latching type.

FIG. 4 shows a second embodiment of the invention. As seen in the figure, this electromagnet device is different from the electromagnet device of the first embodiment except that armature portions 3a and 4 sandwich magnetic pole portions 6a and 6b.
b, 4a, and 3b, those on the same side with respect to the iron core 6 (for example, 4b and 3b) are shorter than those on the other side (for example, 3a and 4a). (Indicated as 3b' and 4b' in FIG. 4) Therefore, this electromagnetic device is of a single stipple type.

The operating state of this electromagnet device is shown in FIG. , a closed magnetic path due to the magnetic flux of the permanent magnet 5 (permanent magnet N pole - magnetic piece 4 - armature part 4a - magnetic pole part 6b - iron core 6 - magnetic pole part 6a
- armature portion 3a - magnetic piece 3 - permanent magnet S pole) and is stable. A current is passed through the coil 7 and the magnetic pole part 6
When a is excited to the S pole (not shown, the magnetic pole part 6b is the N pole), the magnetic pole part 6a and the armature parts 3a, 4b
As shown in FIG. swings to the right in the figure using a part of the coil frame 8 (the tips of the protrusions 8a and 8b) as a fulcrum. This state is maintained during excitation. However, in this state, the magnetic circuit is unstable because there is an air gap between each magnetic pole part and the armature part, and when the excitation is turned off, the armature block 1' similarly swings to the left in the figure. , Fig. 5 (al state).This state is maintained during non-excitation.

FIG. 6 shows a third embodiment of the invention. As seen in the figure, in this electromagnet device, the armature block 1 is the same as that of the first embodiment, but the iron core 6 is movable. Figure 3 (1ad, fb) shows the operating state of this electromagnetic device. As shown in FIGS. 3ad and 3(b), the armature block 1 is fixed with a coil frame 8.

In the same figure (al), a current is passed through the coil 7 and the magnetic pole part 6
When a is excited to the north pole (not shown, the magnetic pole part 6b is made to the south pole), the iron core 6 moves to the left in the figure due to homopolar repulsion and different polarity attraction between the magnetic pole part and the armature part. The state shown in FIG. 2(a) is reached. Even if the current in the coil 7 is set to O and the magnetic flux of the electromagnet is set to O, this state is maintained because a closed magnetic path is formed by the magnetic flux of the permanent magnet 5. When a current in the opposite direction is passed through the coil 7 to excite the magnetic pole part 6a to the S pole (not shown, the magnetic pole part 6b to the N pole), homopolar repulsion between the magnetic pole part and the armature part, Due to the different polarity attraction, the iron core 6 moves to the right in the figure, resulting in the state shown in Figure 7 (BLO).Even if the current in the coil 7 is set to 0 and the magnetic flux of the electromagnet is set to 0, a closed magnetic path is formed by the magnetic flux of the permanent magnet 5. This state is maintained because of this.

This electromagnetic device is of the latching type. Note that 9 is a hole in the axial direction of the coil frame, which is horizontally elongated as shown in the figure to allow the movement of the iron core 6. This electromagnetic device can also be of the single stipple type as in the second embodiment.

Note that in FIGS. 4 to 7, the same numbers as in FIG. 1 refer to the same items.

The electromagnetic device of the present invention is not limited to the above-mentioned embodiments, and there are various types. Some examples are given below. The magnetic piece and the armature may be integrally formed as in the above example, or may be formed separately and then integrated. Similarly, the iron core and the magnetic pole portion may be formed integrally, or may be formed separately and then integrated. The shapes of the armature portion and the magnetic pole portion are not limited to the above examples, and may be appropriately selected. Even when the armature block is made to swing using a part of the coil frame as a fulcrum, there are various ways to take the fulcrum of the coil frame, and it may be selected as appropriate. The movement of the armature block is not limited to rocking, but may also move in parallel from side to side when viewed from the direction shown in FIG. 3 1ad, fbl, for example. The armature block is fixed and the iron core is movable (in such cases, the armature block is not fixed to the coil frame and, for example,
may be fixed to When the core moves, the coil frame may be fixed or may move together with the core. When making a latching type electromagnetic device into a single stipple type, the armature of one magnetic piece may be shortened as in the example above, or the armature of one magnetic piece may be shortened as in the example above. A hole may be provided in the notch.

In the electromagnet device of the present invention, two magnetic pieces sandwich a permanent magnet from both sides in the direction of magnetization, and an armature portion extending from a diagonal position of one of the magnetic pieces in one direction in the sandwiching direction is provided. an armature block that is provided with an armature part that extends in the same direction from the diagonal position of the other magnetic piece that is in a twisted positional relationship with the armature block, and an electromagnet block that has an iron core around which a coil is wound. Since both blocks are combined so that the magnetic pole portions at both ends of the iron core are inserted into the gaps between the armature portions, the conventional E-shaped electromagnet pro-nk and U-shaped armature Compared to a combination with a block, the U-shaped yoke is eliminated, making it slimmer and smaller. In addition, a permanent magnet is sandwiched between the central magnetic pole parts of two conventional U-shaped magnetic pieces from both sides in the magnetization direction, and a coil is wound around an armature block in which both ends of each U-shaped magnetic piece are made into armature parts. In an electromagnet device, the blocks are combined so that the magnetic pole parts at both ends of the iron core are inserted into the gaps between the armature parts. It was necessary to provide a shaft, which made the structure complicated, but in the electromagnet device of this invention, there is no need to provide a shaft in order for either the armature block or the iron core to move, so the structure is simplified. ing. This electromagnetic device is
It is also compact because the movement range (operating stroke) of the armature block or iron core is determined by the spacing between the armature parts. The movement of the armature block or the iron core is detected by a card or the like provided in each armature block and is used, for example, to open and close contacts. Using this electromagnetic device, it is possible to create a small and thin polarized relay.

〔Effect of the invention〕

In the electromagnet device of the present invention, two magnetic pieces sandwich a permanent magnet from both sides in the direction of magnetization, and an armature portion extending from a diagonal position of one of the magnetic pieces in one direction in the sandwiching direction is provided. an armature block that is provided with an armature part that extends in the same direction from the diagonal position of the other magnetic piece that is in a twisted positional relationship with the armature block, and an electromagnet block that has an iron core around which a coil is wound. Since the two blocks are combined so that the magnetic pole parts at both ends of the iron core are inserted into the gaps between the armature parts, the structure is slim and compact, and the armature block Or, since there is no need to provide a shaft for either one of the iron cores to move,
The structure is simple and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a perspective view showing how to combine an electromagnet block and an armature block in the first embodiment, and FIG.
FIG. 4 is a perspective view of the second embodiment of the present invention, and FIG. 5(a) shows the operating state of the first embodiment. FIG. 6 is a perspective view of the third embodiment of the present invention, and FIG. 7 (al and bl are front views showing the operating state of the third embodiment). It is.

Claims (4)

[Claims] (1) Two pieces of magnetic material sandwich a permanent magnet from both sides in the direction of magnetization, and an armature is provided that extends from a diagonal position of one of the pieces of magnetic material in one direction in the sandwiching direction. comprising an armature block provided with an armature portion extending in the same direction from the diagonal position of the other magnetic piece in a twisted positional relationship, and an electromagnet block having an iron core around which a coil is wound; Both blocks are combined so that the magnetic pole parts at both ends of the iron core are inserted into the gaps existing between the armature parts, and either the armature block or the iron core moves due to a change in the excitation polarity of the coil. An electromagnetic device that looks like this. (2) The electromagnet device according to claim 1, wherein the armature block is configured to swing about a part of the coil frame around which the coil is wound as a fulcrum. (3) The electromagnet device according to claim 1, wherein the armature block is fixed by a coil frame around which a coil is wound, and the iron core is movable. (4) The electromagnet device according to any one of claims 1 to 3, wherein the armature portions that sandwich the magnetic pole portion are shorter on the same side than on the other side.