KR102452358B1 - Arc path former and direct current relay include the same - Google Patents

Abstract

An arc path forming unit and a DC relay are disclosed. The arc path forming unit according to various embodiments of the present disclosure includes a Halbach arrangement provided in at least one of the left and right directions. The Halbach arrangement, on its own or with other magnetic materials, forms a magnetic field inside the arc chamber. An electromagnetic force for inducing the generated arc may be formed by the formed magnetic field and the current passed through the DC relay. An electromagnetic force is formed in a direction away from each fixed contact. Accordingly, the generated arc can be effectively extinguished and discharged.

Description

Arc path former and direct current relay include the same}

The present invention relates to an arc path forming unit and a DC relay including the same, and more particularly, to an arc path forming unit having a structure capable of effectively inducing a generated arc to the outside, and a DC relay including the same.

A direct current relay is a device that transmits a mechanical drive or current signal using the principle of an electromagnet. A DC relay is also called a magnetic switch and is generally classified as an electrical circuit switch.

A DC relay includes a fixed contact and a movable contact. The fixed contact is electrically connected to an external power source and load. The fixed contact and the movable contact may be in contact with each other or may be spaced apart from each other.

By the contact and separation of the fixed contact and the movable contact, the conduction through the DC relay is allowed or blocked. The movement is achieved by a drive unit that applies a drive force to the movable contact.

When the fixed contact and the movable contact are spaced apart, an arc is generated between the fixed contact and the movable contact. An arc is a flow of high-pressure, high-temperature current. Accordingly, the generated arc must be rapidly discharged from the DC relay through a preset path.

The arc discharge path is formed by a magnet provided in the DC relay. The magnet forms a magnetic field in the space where the fixed contact and the movable contact are in contact. A discharge path of the arc may be formed by the formed magnetic field and the electromagnetic force generated by the flow of current.

Referring to FIG. 1 , a space in which a fixed contact 1100 and a movable contact 1200 provided in a DC relay 1000 according to the prior art are in contact with each other is shown. As described above, the permanent magnet 1300 is provided in the space.

The permanent magnet 1300 includes a first permanent magnet 1310 positioned on the upper side and a second permanent magnet 1320 positioned on the lower side.

A plurality of first permanent magnets 1310 are provided, and the polarities of the surfaces facing the second permanent magnets 1320 are magnetized to have different polarities. The lower side of the first permanent magnet 1310 located on the left side of FIG. 1 is an N pole, and the second permanent magnet 1310 located on the right side of FIG. 1 is magnetized with an S pole side.

In addition, a plurality of second permanent magnets 1320 are also provided, so that the polarity of each side facing the first permanent magnet 1310 is magnetized to a different polarity. The upper side of the second permanent magnet 1320 positioned on the left side of FIG. 1 is an S pole, and the second permanent magnet 1320 positioned on the right side of FIG. 1 is magnetized with an upper side with an N pole.

FIG. 1A illustrates a state in which current flows in through the fixed contact 1100 on the left and flows out through the fixed contact 1100 on the right. According to Fleming's left hand rule, the electromagnetic force is formed like a hatched arrow.

Specifically, in the case of the fixed contact 1100 located on the left side, the electromagnetic force is formed toward the outside. Accordingly, the arc generated at the location can be discharged to the outside.

However, in the case of the fixed contact 1100 located on the right side, the electromagnetic force is formed toward the inner side, that is, the central portion of the movable contact 1200 . Accordingly, the arc generated at the location is not immediately discharged to the outside.

Also, FIG. 1B shows a state in which current flows in through the fixed contact 1100 on the right and flows out through the fixed contact 1100 on the left. According to Fleming's left hand rule, an electromagnetic force is formed with a hatched arrow.

Specifically, in the case of the fixed contact 1100 located on the right side, the electromagnetic force is formed toward the outside. Accordingly, the arc generated at the location can be discharged to the outside.

However, in the case of the fixed contact 1100 located on the left side, the electromagnetic force is formed toward the inside, that is, the central portion of the movable contact 1200 . Accordingly, the arc generated at the location is not immediately discharged to the outside.

In the central portion of the DC relay 1000 , that is, in the space between each fixed contact 1100 , various members for driving the movable contact 1200 in the vertical direction are provided. For example, a shaft, a spring member inserted through the shaft, etc. is provided at the above position.

Therefore, when the arc generated as shown in FIG. 1 is moved toward the central portion, and if the arc moved to the central portion cannot be moved to the outside immediately, there is a risk that various members provided in the position may be damaged by the energy of the arc. have.

In addition, as shown in FIG. 1 , the direction of the electromagnetic force formed inside the DC relay 1000 according to the prior art depends on the direction of the current flowing through the fixed contact 1200 . That is, the position of the electromagnetic force formed in the inward direction among the electromagnetic forces generated at each fixed contact point 1100 is different depending on the direction of the current.

In other words, the user must consider the direction of the current whenever using a DC relay. This may cause inconvenience to the use of the DC relay. In addition, regardless of the intention of the user, a situation in which the direction of the current applied to the DC relay is changed due to inexperienced operation or the like cannot be excluded.

In this case, the members provided in the central portion of the DC relay may be damaged by the generated arc. Accordingly, the durability life of the DC relay is reduced, and there is a risk that a safety accident may occur.

Korean Patent Document No. 10-1696952 discloses a DC relay. Specifically, a DC relay having a structure capable of preventing movement of a movable contact using a plurality of permanent magnets is disclosed.

However, the DC relay having the above-described structure can prevent movement of the movable contact by using a plurality of permanent magnets, but there is a limitation in that there is no consideration of a method for controlling the direction of the arc discharge path.

Korean Patent Document No. 10-1216824 discloses a DC relay. Specifically, a DC relay having a structure capable of preventing arbitrary separation between a movable contact and a fixed contact using a damping magnet is disclosed.

However, the DC relay having the above-described structure suggests only a method for maintaining the contact state between the movable contact and the fixed contact. That is, there is a limitation in that a method for forming an arc discharge path generated when the movable contact and the fixed contact are spaced apart cannot be proposed.

Korean Patent Document No. 10-1696952 (2017.01.16.) Korean Patent Document No. 10-1216824 (2012.12.28.)

An object of the present invention is to provide an arc path forming unit having a structure capable of solving the above-described problems and a DC relay including the same.

First, an object of the present invention is to provide an arc path forming unit having a structure capable of rapidly extinguishing and discharging an arc generated as current is cut off and a DC relay including the same.

In addition, an object of the present invention is to provide an arc path forming unit having a structure capable of strengthening the magnitude of the force for inducing the generated arc, and a DC relay including the same.

In addition, an object of the present invention is to provide an arc path forming unit having a structure that can prevent damage to components for energization by the generated arc and a DC relay including the same.

In addition, an object of the present invention is to provide an arc path forming unit having a structure in which arcs generated at a plurality of positions can proceed without meeting each other, and a DC relay including the same.

In addition, an object of the present invention is to provide an arc path forming unit having a structure capable of achieving the above object without excessive design changes and a DC relay including the same.

In order to achieve the above object, the present invention, a magnet frame formed with a space in which the fixed contact and the movable contact is accommodated; It is located in the space portion of the magnet frame, and comprises a Halbach array (Halbach array) for forming a magnetic field in the space portion and a magnet portion provided separately from the Halbach array, the space portion, the length in one direction is different a first surface and a second surface formed to be longer than the length of the direction, the magnet frame extending in the one direction, disposed to face each other and enclosing a portion of the space; and a third surface and a fourth surface extending in the other direction, continuous with the first surface and the second surface, respectively, disposed to face each other and enclosing the remaining part of the space, the Halbach arrangement silver, which is arranged side by side in the other direction, includes a plurality of blocks formed of a magnetic material, is located adjacent to any one or more surfaces of the third surface and the fourth surface, and a plurality of the magnet parts are provided, Any one or more of the plurality of magnet parts is positioned adjacent to the first surface, and another one or more of the plurality of magnet parts is positioned adjacent to the second surface.

In addition, the Halbach arrangement of the arc path forming unit may include: a first Halbach arrangement positioned adjacent to any one of the third surface and the fourth surface; and a second Halbach arrangement disposed adjacent to the other one of the third surface and the fourth surface and disposed to face the first Halbach arrangement with the space portion therebetween, wherein the magnet part , a first magnet portion and a second magnet portion positioned adjacent to any one of the first surface and the second surface, and arranged in parallel along the one direction; and located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, and facing the first magnet part and the second magnet part, respectively, with the space part therebetween. It may include a third magnet portion and a fourth magnet portion arranged to be

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, One of the surfaces of the first and second Halbach arrays facing each other is magnetized with the same polarity as the polarity, and the first and second Halbach arrays face each other at an angle The other one of the faces may be magnetized with a polarity different from the polarity.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, Each surface of the first Halbach arrangement and the second Halbach arrangement facing each other may be magnetized to have a polarity different from the polarity.

In addition, the first Halbach arrangement of the arc path forming unit may include: a first block positioned to be biased toward any one of the first surface and the second surface; a third block positioned to be biased toward the other of the first surface and the second surface; and a second block positioned between the first block and the third block, wherein the second Halbach arrangement is a first block positioned to be biased toward any one of the first surface and the second surface ; a third block positioned to be biased toward the other of the first surface and the second surface; and a second block positioned between the first block and the third block.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, One of the faces of the second block of the first Halbach arrangement and the second block of the second Halbach arrangement facing each other is magnetized with the same polarity as the polarity, The second block and the other surface of the surfaces of the second block of the second Halbach arrangement facing each other may be magnetized to have a polarity different from the polarity.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, Each side of the second block of the first Halbach arrangement and the second block of the second Halbach arrangement facing each other may be magnetized with a polarity different from the polarity.

In addition, the first Halbach arrangement of the arc path forming part may include: a first block disposed to overlap the fixed contactor along the one direction; and a second block positioned to be biased toward any one of the first face and the second face, wherein the second Halbach arrangement is a first block disposed to overlap the fixed contactor along the one direction ; and a second block positioned to be biased toward the other of the first surface and the second surface.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, One of the surfaces of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other is magnetized to the same polarity as the polarity, and the first block of the first Halbach arrangement is The first block and the other one of the surfaces of the first block of the second Halbach arrangement facing each other may be magnetized to have a polarity different from the polarity.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, Each surface of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other may be magnetized with a polarity different from the polarity.

In addition, the first Halbach arrangement of the arc path forming part may include: a first block disposed to overlap the fixed contactor along the one direction; and a second block positioned to be biased toward any one of the first face and the second face, wherein the second Halbach arrangement is a first block disposed to overlap the fixed contactor along the one direction ; a second block positioned to be biased toward the other of the first surface and the second surface; and a third block positioned to be biased toward the one of the first surface and the second surface.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, One of the surfaces of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other is magnetized to the same polarity as the polarity, and the first block of the first Halbach arrangement is The first block and the other one of the surfaces of the first block of the second Halbach arrangement facing each other may be magnetized to have a polarity different from the polarity.

In addition, each surface of the first magnet part and the second magnet part facing each other of the arc path forming part and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity, Each surface of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other may be magnetized with a polarity different from the polarity.

In addition, the Halbach arrangement of the arc path forming part is located adjacent to any one of the third surface and the fourth surface, and the magnet part, any one of the first surface and the second surface a first magnet part and a second magnet part positioned adjacent to the surface of the and arranged in parallel along the one direction; Located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, the first magnet part and the second magnet part facing each other with the space part therebetween a third magnet part and a fourth magnet part disposed; and a fifth magnet part positioned adjacent to the other one of the third face and the fourth face, and disposed to face the Halbach arrangement with the space part therebetween.

In addition, each surface of the arc path forming part facing the first magnet part and the second magnet part and the third magnet part and the fourth magnet part facing each other are magnetized with the same polarity, One of the surfaces facing the Bach arrangement and the fifth magnet part is magnetized with the same polarity as the polarity, and the other one of the surfaces facing the Halbach arrangement and the fifth magnet part is the It can be magnetized with a polarity different from that of the polarity.

In addition, each surface of the arc path forming part facing the first magnet part and the second magnet part and the third magnet part and the fourth magnet part facing each other are magnetized with the same polarity, Each surface of the Bach arrangement and the fifth magnet unit facing each other may be magnetized to have a polarity different from the polarity.

In addition, the Halbach arrangement of the arc path forming unit, a first block located biased to any one of the first surface and the second surface; a third block positioned to be biased toward the other of the first surface and the second surface; and a second block positioned between the first block and the third block.

In addition, each surface of the arc path forming part facing the first magnet part and the second magnet part and the third magnet part and the fourth magnet part facing each other are magnetized with the same polarity, Any one of the surfaces facing each other of the second block and the fifth magnet part of the Bach arrangement is magnetized with the same polarity as the polarity, and the second block and the fifth magnet part of the Halbach arrangement face each other The other one of the respective surfaces may be magnetized with a polarity different from the polarity.

In addition, each surface of the arc path forming part facing the first magnet part and the second magnet part and the third magnet part and the fourth magnet part facing each other are magnetized with the same polarity, Each surface of the second block of the Bach arrangement and the fifth magnet part facing each other may be magnetized to have a polarity different from the polarity.

In addition, the Halbach arrangement of the arc path forming part may include: a first block disposed to overlap the fixed contactor along the one direction; and a second block positioned to be biased toward any one of the first surface and the second surface.

In addition, each surface of the arc path forming part facing the first magnet part and the second magnet part and the third magnet part and the fourth magnet part facing each other are magnetized with the same polarity, One of the surfaces facing the first block and the fifth magnet part of the Bach arrangement is magnetized with the same polarity as the polarity, and the first block and the fifth magnet unit of the Halbach arrangement face each other The other one of the respective surfaces may be magnetized with a polarity different from the polarity.

In addition, each surface of the arc path forming part facing the first magnet part and the second magnet part and the third magnet part and the fourth magnet part facing each other are magnetized with the same polarity, Each surface of the first block and the fifth magnet part facing each other of the Bach arrangement may be magnetized to have a polarity different from the polarity.

In addition, the present invention is provided with a plurality of fixed contacts that are spaced apart from each other in one direction; a movable contact contacting or spaced apart from the fixed contact; a magnet frame having a space in which the fixed contact and the movable contact are accommodated; It is located in the space portion of the magnet frame, and includes a Halbach arrangement for forming a magnetic field in the space portion and a magnet portion provided separately from the Halbach arrangement, wherein the space portion has a length in one direction longer than a length in the other direction. It is formed to be elongated, the magnet frame, extending in the one direction, is disposed to face each other, a first surface and a second surface surrounding a portion of the space portion; and a third surface and a fourth surface extending in the other direction, continuous with the first surface and the second surface, respectively, disposed to face each other and enclosing the remaining part of the space, the Halbach arrangement silver, which is arranged side by side in the other direction, includes a plurality of blocks formed of a magnetic material, is located adjacent to any one or more surfaces of the third surface and the fourth surface, and a plurality of the magnet parts are provided, Any one or more of the plurality of magnet parts is positioned adjacent to the first surface, and the other one or more of the plurality of magnet parts is positioned adjacent to the second surface.

In addition, the Halbach arrangement of the DC relay may include: a first Halbach arrangement positioned adjacent to any one of the third surface and the fourth surface; and a second Halbach arrangement disposed adjacent to the other one of the third surface and the fourth surface and disposed to face the first Halbach arrangement with the space portion therebetween, wherein the magnet part , a first magnet portion and a second magnet portion positioned adjacent to any one of the first surface and the second surface, and arranged in parallel along the one direction; and located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, and facing the first magnet part and the second magnet part, respectively, with the space part therebetween. It includes a third magnet part and a fourth magnet part arranged to be so, each surface facing each other of the first magnet part and the second magnet part, and each surface facing the third magnet part and the fourth magnet part each other magnetized to the same polarity, and any one of the surfaces of the first and second Halbach arrays facing each other is magnetized to the same polarity as the polarity, and the first and second Halbach arrays are magnetized to the same polarity. The other one of the surfaces of the Halbach array facing each other may be magnetized to have a polarity different from the polarity.

In addition, the Halbach arrangement of the DC relay may include: a first Halbach arrangement positioned adjacent to any one of the third surface and the fourth surface; and a second Halbach arrangement disposed adjacent to the other one of the third surface and the fourth surface and disposed to face the first Halbach arrangement with the space portion therebetween, wherein the magnet part , a first magnet portion and a second magnet portion positioned adjacent to any one of the first surface and the second surface, and arranged in parallel along the one direction; and located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, and facing the first magnet part and the second magnet part, respectively, with the space part therebetween. It includes a third magnet part and a fourth magnet part arranged to be so, each surface facing each other of the first magnet part and the second magnet part, and each surface facing the third magnet part and the fourth magnet part each other Each side of the first and second Halbach arrays facing each other may be magnetized with the same polarity, and may be magnetized with a polarity different from the polarity.

In addition, the Halbach arrangement of the DC relay is positioned adjacent to any one of the third surface and the fourth surface, and the magnet unit includes any one of the first surface and the second surface. a first magnet part and a second magnet part positioned adjacent to the surface and arranged in parallel along the one direction; Located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, the first magnet part and the second magnet part facing each other with the space part therebetween a third magnet part and a fourth magnet part disposed; and a fifth magnet part positioned adjacent to the other one of the third face and the fourth face and disposed to face the Halbach arrangement with the space part therebetween, wherein the first magnet part and the Each side of the second magnet unit facing each other and each side facing the third magnet unit and the fourth magnet unit are magnetized with the same polarity, and among each side facing the Halbach arrangement and the fifth magnet unit One side may be magnetized with the same polarity as the polarity, and the other side of each side facing the Halbach arrangement and the fifth magnet unit may be magnetized with a polarity different from the polarity.

In addition, the Halbach arrangement of the DC relay is positioned adjacent to any one of the third surface and the fourth surface, and the magnet unit includes any one of the first surface and the second surface. a first magnet part and a second magnet part positioned adjacent to the surface and arranged in parallel along the one direction; Located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, the first magnet part and the second magnet part facing each other with the space part therebetween a third magnet part and a fourth magnet part disposed; and a fifth magnet part positioned adjacent to the other one of the third face and the fourth face and disposed to face the Halbach arrangement with the space part therebetween, wherein the first magnet part and the Each surface of the second magnet unit facing each other and each side facing the third magnet unit and the fourth magnet unit are magnetized with the same polarity, and each side facing the Halbach arrangement and the fifth magnet unit is It may be magnetized to a polarity different from the polarity.

According to an embodiment of the present invention, the following effects can be achieved.

First, the arc path forming unit includes a Halbach arrangement and a magnet unit. The Halbach arrangement and the magnet unit form a magnetic field inside the arc path forming unit, respectively. The formed magnetic field forms an electromagnetic force together with the current passed through the fixed contactor and the movable contactor accommodated in the arc path forming unit.

At this time, the generated arc is formed in a direction away from each fixed contact. The arc generated by the fixed contact and the movable contact being spaced apart may be induced by the electromagnetic force.

Accordingly, the generated arc can be quickly extinguished and discharged to the outside of the arc path forming unit and the DC relay.

Also, the arc path forming section includes a Halbach arrangement. The Halbach array includes a plurality of magnetic materials that are arranged side by side in one direction. The plurality of magnetic materials may further strengthen the strength of the magnetic field on either side of both sides of the one direction and the other direction.

At this time, in the Halbach arrangement, the one side, that is, the direction in which the strength of the magnetic field is strengthened, is disposed toward the space portion of the arc path forming unit. That is, by the Halbach arrangement, the strength of the magnetic field formed inside the space may be strengthened.

Accordingly, the strength of the electromagnetic force that depends on the strength of the magnetic field may also be strengthened. As a result, the intensity of the electromagnetic force that induces the generated arc is strengthened, so that the generated arc can be effectively extinguished and discharged.

In addition, the direction of the electromagnetic force formed by the magnetic field formed by the Halbach arrangement and the magnet unit and the current passed through the fixed contactor and the movable contactor is formed in a direction away from the center.

Furthermore, as described above, since the strength of the magnetic field and electromagnetic force is strengthened by the Halbach arrangement and the magnet unit, the arc generated can be extinguished and moved quickly in a direction away from the center.

Accordingly, damage to various components provided near the center for the operation of the DC relay can be prevented.

Also, in various embodiments, a plurality of fixed contacts may be provided. The Halbach array or magnet unit provided in the arc path forming unit forms magnetic fields in different directions in the vicinity of each fixed contactor. Accordingly, the paths of arcs generated in the vicinity of each stationary contact proceed in different directions.

Accordingly, arcs generated in the vicinity of each fixed contact do not meet each other. Accordingly, a malfunction or a safety accident that may be caused by the collision of arcs generated at different positions may be prevented.

In addition, in order to achieve the above object and effect, the arc path forming portion includes a Halbach arrangement and a magnet portion provided in the space portion. The Halbach arrangement and the magnet portion are located inwardly on each side of the magnet frame surrounding the space portion. That is, a separate design change for disposing the Halbach arrangement and the magnet part outside the space part is not required.

Accordingly, the arc path forming unit according to various embodiments of the present disclosure may be provided in the DC relay without excessive design change. Accordingly, time and cost for applying the arc path forming unit according to various embodiments of the present invention may be reduced.

1 is a conceptual diagram illustrating a DC relay according to the prior art.
2 is a perspective view illustrating a DC relay according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view showing the configuration of the DC relay of Fig. 2;
4 is an open perspective view illustrating an arc path forming unit provided in the DC relay of FIG. 2 .
5 and 6 are conceptual views illustrating an arc path forming unit according to an embodiment of the present invention.
7 and 8 are conceptual views illustrating magnetic fields and arc paths formed by the arc path forming unit according to the embodiment of FIGS. 5 and 6 .
9 to 12 are conceptual views illustrating an arc path forming unit according to another embodiment of the present invention.
13 and 14 are conceptual views illustrating magnetic fields and arc paths formed by the arc path forming unit according to the embodiment of FIGS. 9 to 12 .
15 to 18 are conceptual views illustrating an arc path forming unit according to another embodiment of the present invention.
19 and 20 are conceptual views illustrating magnetic fields and arc paths formed by the arc path forming unit according to the embodiment of FIGS. 15 to 18 .
21 to 28 are conceptual views illustrating an arc path forming unit according to another embodiment of the present invention.
29 and 30 are conceptual views illustrating paths of a magnetic field and an arc formed by the arc path forming unit according to the embodiment of FIGS. 21 to 28 .
31 to 38 are conceptual views illustrating an arc path forming unit according to another embodiment of the present invention.
39 to 40 are conceptual views illustrating paths of magnetic fields and arcs formed by the arc path forming unit according to the embodiment of FIGS. 31 to 38 .

Hereinafter, the arc path forming unit 100, 200, 300, 400, 500 and the DC relay 1 including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

1. Definition of terms

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be

On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise.

The term “magnetize” used in the following description refers to a phenomenon in which an object becomes magnetic in a magnetic field.

The term “polarity” used in the following description refers to different properties of an anode and a cathode of an electrode. In an embodiment, the polarity may be divided into an N pole or an S pole.

The term “electric current” used in the following description refers to a state in which two or more members are electrically connected.

The term "arc path (AP)" used in the following description means a path through which the generated arc is moved or extinguished.

"⊙" shown in the following drawings means a direction in which the current flows from the movable contact 43 toward the fixed contact 22 (ie, upward direction), that is, in a direction coming out of the ground.

"ⓧ" shown in the following drawings means a direction in which current flows from the fixed contactor 22 toward the movable contactor 43 (ie, downward direction), that is, a direction that penetrates the ground.

The term “Halbach Array” used in the following description refers to an aggregate composed of a plurality of magnetic materials arranged side by side and configured in a column or a row.

A plurality of magnetic materials constituting the Halbach arrangement may be arranged according to a predetermined rule. The plurality of magnetic materials may form a magnetic field on their own or with each other.

The Halbach arrangement contains two relatively long faces and the other two relatively short faces. The magnetic field formed by the magnetic material constituting the Halbach arrangement may be formed with a stronger intensity on the outside of any one of the two long surfaces.

In the following description, it is assumed that the strength of the magnetic field in the direction toward the space portions 115 , 215 , 315 , 415 , 515 is stronger among the magnetic fields formed by the Halbach arrangement.

The term "magnet" used in the following description refers to an object of any shape that is formed of a magnetic material and can form a magnetic field. In an embodiment, the magnet unit may be provided with a permanent magnet or an electromagnet. It will be understood that the magnet part is a magnetic material different from the magnetic material forming the Halbach arrangement, that is, a magnetic material provided separately from the Halbach arrangement.

The magnet part may form a magnetic field by itself or in conjunction with another magnetic material.

The magnet part may extend in one direction. The magnet unit may be magnetized to have different polarities at both ends in the one direction (ie, have different polarities in the longitudinal direction). In addition, the magnet unit may be magnetized to have different polarities on both sides of the one direction and the other direction (ie, have different polarities in the width direction).

The magnetic field formed by the arc path forming unit 100 , 200 , 300 , 400 , 500 according to an embodiment of the present invention is shown by a dashed-dotted line in each figure.

The terms “left”, “right”, “top”, “bottom”, “front side” and “rear side” used in the following description will be understood with reference to the coordinate system shown in FIG. 2 .

2. Description of the configuration of the DC relay 1 according to the embodiment of the present invention

2 to 4 , the DC relay 1 according to an embodiment of the present invention includes a frame part 10 , an opening/closing part 20 , a core part 30 , and a movable contact part 40 .

5 to 40 , the DC relay 1 according to an embodiment of the present invention includes arc path forming units 100 , 200 , 300 , 400 and 500 .

The arc path forming units 100 , 200 , 300 , 400 , and 500 may form a discharge path of the generated arc.

Hereinafter, each configuration of the DC relay 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings, but the arc path forming units 100, 200, 300, 400, and 500 will be described as separate clauses.

The arc path forming units 100 , 200 , 300 , 400 , and 500 according to various embodiments to be described below are described on the assumption that the direct current relay 1 is provided.

However, the arc path forming unit (100, 200, 300, 400, 500) is to be energized and de-energized with the outside by the contact and separation of fixed and movable contacts such as magnetic contactors and magnetic switches. It will be understood that the apparatus may be applied to any type of device.

(1) Description of the frame part 10

The frame part 10 forms the outside of the DC relay 1 . A predetermined space is formed inside the frame part 10 . Various devices that perform a function for the DC relay 1 to apply or block an externally transmitted current may be accommodated in the space.

That is, the frame part 10 functions as a kind of housing.

The frame part 10 may be formed of an insulating material such as synthetic resin. This is to prevent arbitrarily energizing the inside and outside of the frame part 10 .

The frame part 10 includes an upper frame 11 , a lower frame 12 , an insulating plate 13 , and a support plate 14 .

The upper frame 11 forms the upper side of the frame part 10 . A predetermined space is formed inside the upper frame 11 .

The opening/closing part 20 and the movable contact part 40 may be accommodated in the inner space of the upper frame 11 . In addition, the arc path forming units 100 , 200 , 300 , 400 and 500 may be accommodated in the inner space of the upper frame 11 .

The upper frame 11 may be coupled to the lower frame 12 . An insulating plate 13 and a support plate 14 may be provided in a space between the upper frame 11 and the lower frame 12 .

The fixed contact 22 of the opening and closing part 20 is located on one side of the upper frame 11, and on the upper side in the illustrated embodiment. The fixed contact 22 is partially exposed on the upper side of the upper frame 11 , and may be electrically connected to an external power source or load.

To this end, a through hole through which the fixed contact 22 is coupled may be formed in the upper side of the upper frame 11 .

The lower frame 12 forms the lower side of the frame portion 10 . A predetermined space is formed inside the lower frame 12 . The core part 30 may be accommodated in the inner space of the lower frame 12 .

The lower frame 12 may be coupled to the upper frame 11 . An insulating plate 13 and a support plate 14 may be provided in a space between the lower frame 12 and the upper frame 11 .

The insulating plate 13 and the supporting plate 14 electrically and physically separate the inner space of the upper frame 11 and the inner space of the lower frame 12 .

The insulating plate 13 is positioned between the upper frame 11 and the lower frame 12 . The insulating plate 13 electrically separates the upper frame 11 and the lower frame 12 from each other. To this end, the insulating plate 13 may be formed of an insulating material such as synthetic resin.

The opening/closing part 20, the movable contact part 40, and the arc path forming part 100, 200, 300, 400, 500 and the lower frame 12 accommodated inside the upper frame 11 by the insulating plate 13. Any current between the core portion 30 accommodated in the can be prevented.

A through hole (not shown) is formed in the center of the insulating plate 13 . The shaft 44 of the movable contact part 40 is coupled through the through hole (not shown) to be movable in the vertical direction.

A support plate 14 is positioned below the insulating plate 13 . The insulating plate 13 may be supported by the support plate 14 .

The support plate 14 is positioned between the upper frame 11 and the lower frame 12 .

The support plate 14 physically separates the upper frame 11 and the lower frame 12 . In addition, the support plate 14 supports the insulating plate 13 .

The support plate 14 may be formed of a magnetic material. Accordingly, the support plate 14 may form a magnetic circuit together with the yoke 33 of the core part 30 . By the magnetic path, a driving force for moving the movable core 32 of the core part 30 toward the fixed core 31 may be formed.

A through hole (not shown) is formed in the center of the support plate 14 . The shaft 44 is coupled through the through hole (not shown) to be movable in the vertical direction.

Accordingly, when the movable core 32 is moved in a direction toward the fixed core 31 or in a direction spaced apart from the fixed core 31 , the shaft 44 and the movable contact 43 connected to the shaft 44 are also moved in the same direction. can be moved together.

(2) Description of the opening/closing part 20

The opening/closing unit 20 permits or blocks current flow according to the operation of the core unit 30 . Specifically, the opening/closing unit 20 may allow or block the flow of current by contacting or separating the fixed contactor 22 and the movable contactor 43 from each other.

The opening and closing part 20 is accommodated in the inner space of the upper frame 11 . The opening/closing part 20 may be electrically and physically spaced apart from the core part 30 by the insulating plate 13 and the supporting plate 14 .

The opening/closing part 20 includes an arc chamber 21 , a fixed contact 22 , and a sealing member 23 .

In addition, arc path forming units 100 , 200 , 300 , 400 and 500 may be provided outside the arc chamber 21 . The arc path forming units 100 , 200 , 300 , 400 , and 500 may form a magnetic field for forming a path A.P of an arc generated inside the arc chamber 21 . A detailed description thereof will be provided later.

The arc chamber 21 extinguishes the arc generated by the fixed contact 22 and the movable contact 43 being spaced apart from each other in the inner space. Accordingly, the arc chamber 21 may be referred to as an “arc extinguishing unit”.

The arc chamber 21 hermetically accommodates the fixed contact 22 and the movable contact 43 . That is, the fixed contact 22 and the movable contact 43 are accommodated in the arc chamber 21 . Accordingly, the arc generated by the fixed contact 22 and the movable contact 43 being spaced apart is not arbitrarily leaked to the outside.

The arc chamber 21 may be filled with an extinguishing gas. The extinguishing gas allows the generated arc to be extinguished and discharged to the outside of the DC relay 1 through a preset path. To this end, a communication hole (not shown) may be formed through the wall surrounding the inner space of the arc chamber 21 .

The arc chamber 21 may be formed of an insulating material. In addition, the arc chamber 21 may be formed of a material having high pressure resistance and high heat resistance. This is because the generated arc is a flow of high-temperature and high-pressure electrons. In an embodiment, the arc chamber 21 may be formed of a ceramic material.

A plurality of through-holes may be formed in the upper side of the arc chamber 21 . A fixed contact 22 is through-coupled to each of the through holes.

In the illustrated embodiment, the fixed contactor 22 is provided in two, including the first fixed contactor 22a and the second fixed contactor 22b. Accordingly, two through-holes formed on the upper side of the arc chamber 21 may also be formed.

When the fixed contact 22 is through-coupled to the through-hole, the through-hole is sealed. That is, the fixed contact 22 is hermetically coupled to the through hole. Accordingly, the generated arc is not discharged to the outside through the through hole.

The lower side of the arc chamber 21 may be opened. The insulating plate 13 and the sealing member 23 are in contact with the lower side of the arc chamber 21 . That is, the lower side of the arc chamber 21 is sealed by the insulating plate 13 and the sealing member 23 .

Accordingly, the arc chamber 21 may be electrically and physically spaced apart from the outer space of the upper frame 11 .

The arc extinguished in the arc chamber 21 is discharged to the outside of the DC relay 1 through a preset path. In an embodiment, the extinguished arc may be discharged to the outside of the arc chamber 21 through the communication hole (not shown).

The fixed contactor 22 is in contact with or spaced apart from the movable contactor 43 to apply or cut off the electric current inside and outside the DC relay 1 .

Specifically, when the fixed contact 22 is in contact with the movable contact 43 , the inside and the outside of the DC relay 1 may be energized. On the other hand, when the fixed contact 22 is spaced apart from the movable contact 43 , the DC relay 1 is cut off from energization inside and outside.

As the name implies, the fixed contact 22 is not moved. That is, the fixed contact 22 is fixedly coupled to the upper frame 11 and the arc chamber 21 . Accordingly, the contact and separation of the fixed contact 22 and the movable contact 43 is achieved by the movement of the movable contact 43 .

One end of the fixed contact 22 , an upper end in the illustrated embodiment, is exposed to the outside of the upper frame 11 . A power source or a load is connected to the one end to be energized, respectively.

A plurality of fixed contacts 22 may be provided. In the illustrated embodiment, the fixed contactor 22 includes a first fixed contactor 22a on the left side and a second fixed contactor 22b on the right side, and includes a total of two fixed contacts 22b.

The first fixed contact 22a is located at one side from the center in the longitudinal direction of the movable contact 43, and to the left in the illustrated embodiment. In addition, the second fixed contact (22b) is located at the other side from the center of the longitudinal direction of the movable contact (43), in the illustrated embodiment, is biased to the right.

A power source may be energably connected to any one of the first fixed contactor 22a and the second fixed contactor 22b. In addition, a load may be electrically connected to the other one of the first fixed contactor 22a and the second fixed contactor 22b.

The DC relay 1 according to the embodiment of the present invention may form the arc path A.P regardless of the direction of the power or load connected to the fixed contactor 22 . This is accomplished by the arc path forming units 100 , 200 , 300 , 400 and 500 , which will be described later in detail.

The other end of the stationary contact 22 , in the illustrated embodiment the lower end, extends towards the movable contact 43 .

When the movable contact 43 is moved upward in the illustrated embodiment in a direction toward the fixed contact 22 , the lower end is in contact with the movable contact 43 . Accordingly, the outside and the inside of the DC relay 1 can be energized.

The lower end of the fixed contact 22 is located inside the arc chamber 21 .

When the control power is cut off, the movable contact 43 is spaced apart from the fixed contact 22 by the elastic force of the return spring 36 .

At this time, as the fixed contact 22 and the movable contact 43 are spaced apart, an arc is generated between the fixed contact 22 and the movable contact 43 . The generated arc is extinguished by the extinguishing gas inside the arc chamber 21 , and may be discharged to the outside along a path formed by the arc path forming unit 100 , 200 , 300 , 400 , 500 .

The sealing member 23 blocks any communication between the arc chamber 21 and the space inside the upper frame 11 . The sealing member 23 seals the lower side of the arc chamber 21 together with the insulating plate 13 and the support plate 14 .

Specifically, the upper side of the sealing member 23 is coupled to the lower side of the arc chamber (21). Further, the radially inner side of the sealing member 23 is coupled to the outer periphery of the insulating plate 13 , and the lower side of the sealing member 23 is coupled to the support plate 14 .

Accordingly, the arc generated in the arc chamber 21 and the arc extinguished by the extinguishing gas do not flow into the inner space of the upper frame 11 .

In addition, the sealing member 23 may be configured to block any communication between the inner space of the cylinder 37 and the inner space of the frame portion 10 .

(3) Description of the core part 30

The core part 30 moves the movable contact part 40 upward according to the application of the control power. In addition, when the application of the control power is released, the core part 30 moves the movable contact part 40 downward again.

The core unit 30 may be connected to an external control power supply (not shown) so as to be energized, and may receive the control power supply.

The core part 30 is located below the opening/closing part 20 . In addition, the core part 30 is accommodated in the lower frame 12 . The core part 30 and the opening/closing part 20 may be electrically and physically spaced apart from each other by the insulating plate 13 and the support plate 14 .

A movable contact part 40 is positioned between the core part 30 and the opening/closing part 20 . The movable contact part 40 may be moved by the driving force applied by the core part 30 . Accordingly, the movable contactor 43 and the fixed contactor 22 may be in contact so that the DC relay 1 may be energized.

The core part 30 includes a fixed core 31 , a movable core 32 , a yoke 33 , a bobbin 34 , a coil 35 , a return spring 36 , and a cylinder 37 .

The fixed core 31 is magnetized by the magnetic field generated by the coil 35 to generate electromagnetic attraction. By the electromagnetic attraction, the movable core 32 is moved toward the fixed core 31 (upward direction in FIG. 3 ).

The fixed core 31 does not move. That is, the fixed core 31 is fixedly coupled to the support plate 14 and the cylinder 37 .

The fixed core 31 may be provided in any shape capable of generating electromagnetic force by being magnetized by a magnetic field. In one embodiment, the fixed core 31 may be provided with a permanent magnet or an electromagnet.

The fixed core 31 is partially accommodated in the upper space inside the cylinder 37 . Further, the outer periphery of the fixed core 31 is in contact with the inner periphery of the cylinder 37 .

The fixed core 31 is positioned between the support plate 14 and the movable core 32 .

A through hole (not shown) is formed in the central portion of the fixed core 31 . A shaft 44 is through-coupled to the through hole (not shown) so as to be movable up and down.

The fixed core 31 is positioned to be spaced apart from the movable core 32 by a predetermined distance. Accordingly, the distance at which the movable core 32 can be moved toward the fixed core 31 may be limited to the predetermined distance. Accordingly, the predetermined distance may be defined as a “moving distance of the movable core 32”.

One end of the return spring 36 is in contact with the lower side of the fixed core 31 , and the upper end in the illustrated embodiment is in contact. When the fixed core 31 is magnetized and the movable core 32 is moved upward, the return spring 36 is compressed and the restoring force is stored.

Accordingly, when the application of the control power is released and the magnetization of the fixed core 31 is terminated, the movable core 32 may be returned to the lower side by the restoring force.

The movable core 32 is moved toward the fixed core 31 by electromagnetic attraction generated by the fixed core 31 when control power is applied.

As the movable core 32 moves, the shaft 44 coupled to the movable core 32 moves upward in the direction toward the fixed core 31 , in the illustrated embodiment. In addition, as the shaft 44 moves, the movable contact part 40 coupled to the shaft 44 moves upward.

Accordingly, the fixed contactor 22 and the movable contactor 43 are in contact so that the DC relay 1 can be energized with an external power source or load.

The movable core 32 may be provided in any shape capable of receiving attractive force by electromagnetic force. In one embodiment, the movable core 32 may be formed of a magnetic material, or may be provided with a permanent magnet or an electromagnet.

The movable core 32 is accommodated inside the cylinder 37 . In addition, the movable core 32 may be moved in the longitudinal direction of the cylinder 37 inside the cylinder 37 , in the illustrated embodiment, in the vertical direction.

Specifically, the movable core 32 may be moved in a direction toward the fixed core 31 and in a direction away from the fixed core 31 .

The movable core 32 is coupled to the shaft 44 . The movable core 32 may move integrally with the shaft 44 . When the movable core 32 moves upward or downward, the shaft 44 also moves upward or downward. Accordingly, the movable contact 43 is also moved upward or downward.

The movable core 32 is located below the fixed core 31 . The movable core 32 is spaced apart from the fixed core 31 by a predetermined distance. As described above, the predetermined distance is a distance at which the movable core 32 can be moved in the vertical direction.

The movable core 32 is formed to extend in the longitudinal direction. A hollow part extending in the longitudinal direction is recessed by a predetermined distance inside the movable core 32 . A return spring 36 and a lower side of the shaft 44 through-coupled to the return spring 36 are partially accommodated in the hollow portion.

A through hole is formed through the lower side of the hollow part in the longitudinal direction. The hollow portion and the through hole communicate with each other. The lower end of the shaft 44 inserted into the hollow portion may proceed toward the through hole.

A space portion is recessed by a predetermined distance at the lower end of the movable core 32 . The space portion communicates with the through hole. The lower head of the shaft 44 is positioned in the space.

The yoke 33 forms a magnetic circuit as control power is applied. The magnetic path formed by the yoke 33 may be configured to adjust the direction of the magnetic field formed by the coil 35 .

Accordingly, when the control power is applied, the coil 35 may generate a magnetic field in a direction in which the movable core 32 moves toward the fixed core 31 . The yoke 33 may be formed of a conductive material capable of conducting electricity.

The yoke 33 is accommodated in the lower frame 12 . The yoke 33 surrounds the coil 35 . The coil 35 may be accommodated in the yoke 33 so as to be spaced apart from the inner circumferential surface of the yoke 33 by a predetermined distance.

The bobbin 34 is accommodated in the yoke 33 . That is, from the outer periphery of the lower frame 12 to the radially inward direction, the yoke 33 , the coil 35 , and the bobbin 34 on which the coil 35 is wound are sequentially arranged.

The upper side of the yoke 33 is in contact with the support plate 14 . In addition, the outer periphery of the yoke 33 may be in contact with the inner periphery of the lower frame 12 or may be positioned to be spaced apart from the inner periphery of the lower frame 12 by a predetermined distance.

A coil 35 is wound around the bobbin 34 . The bobbin 34 is accommodated inside the yoke 33 .

The bobbin 34 may include flat upper and lower portions, and a cylindrical column portion extending in the longitudinal direction to connect the upper and lower portions. That is, the bobbin 34 has a bobbin shape.

The upper portion of the bobbin 34 is in contact with the lower side of the support plate 14 . A coil 35 is wound around the column portion of the bobbin 34 . The thickness around which the coil 35 is wound may be equal to or smaller than the diameters of the upper and lower portions of the bobbin 34 .

A hollow portion extending in the longitudinal direction is formed through the column portion of the bobbin 34 . A cylinder 37 may be accommodated in the hollow portion. The pillar portion of the bobbin 34 may be disposed to have the same central axis as the fixed core 31 , the movable core 32 and the shaft 44 .

The coil 35 generates a magnetic field by the applied control power. The fixed core 31 is magnetized by the magnetic field generated by the coil 35 , so that electromagnetic attraction may be applied to the movable core 32 .

The coil 35 is wound around a bobbin 34 . Specifically, the coil 35 is wound on the column part of the bobbin 34 and is stacked radially outward of the column part. The coil 35 is accommodated inside the yoke 33 .

When the control power is applied, the coil 35 generates a magnetic field. In this case, the strength or direction of the magnetic field generated by the coil 35 may be controlled by the yoke 33 . The fixed core 31 is magnetized by the magnetic field generated by the coil 35 .

When the fixed core 31 is magnetized, the movable core 32 receives an electromagnetic force in a direction toward the fixed core 31 , that is, an attractive force. Accordingly, the movable core 32 is moved upward in the direction toward the fixed core 31 , in the illustrated embodiment.

The return spring 36 provides a restoring force for the movable core 32 to return to its original position when the control power is released after the movable core 32 is moved toward the fixed core 31 .

The return spring 36 is compressed as the movable core 32 moves toward the stationary core 31 and stores a restoring force. At this time, it is preferable that the stored restoring force is smaller than the electromagnetic attraction force exerted on the movable core 32 by magnetizing the fixed core 31 . This is to prevent the movable core 32 from being arbitrarily returned to its original position by the return spring 36 while the control power is applied.

When the application of the control power is released, the movable core 32 receives a restoring force by the return spring 36 . Of course, gravity due to the empty weight of the movable core 32 may also act on the movable core 32 . Accordingly, the movable core 32 may be moved in a direction away from the fixed core 31 to return to the original position.

The return spring 36 may be provided in any shape that is deformed in shape to store the restoring force, returns to its original shape, and transmits the restoring force to the outside. In one embodiment, the return spring 36 may be provided as a coil spring.

A shaft 44 is through-coupled to the return spring 36 . The shaft 44 may move in the vertical direction regardless of the shape deformation of the return spring 36 in a state in which the return spring 36 is coupled.

The return spring 36 is accommodated in a hollow formed in the upper side of the movable core 32 . In addition, one end of the return spring 36 facing the fixed core 31, the upper end in the illustrated embodiment is accommodated in the hollow formed in the lower side of the fixed core (31).

The cylinder 37 houses the stationary core 31 , the movable core 32 , the return spring 36 and the shaft 44 . The movable core 32 and the shaft 44 may move upward and downward in the cylinder 37 .

The cylinder 37 is located in a hollow formed in the column portion of the bobbin 34 . The upper end of the cylinder 37 is in contact with the lower surface of the support plate 14 .

The side surface of the cylinder 37 is in contact with the inner peripheral surface of the column part of the bobbin 34 . The upper opening of the cylinder 37 may be sealed by the fixed core 31 . The lower surface of the cylinder 37 may be in contact with the inner surface of the lower frame 12 .

(4) Description of the movable contact part 40

The movable contact part 40 includes a movable contact 43 and a structure for moving the movable contact 43 . By the movable contact part 40 , the DC relay 1 can be energized with an external power source or load.

The movable contact part 40 is accommodated in the inner space of the upper frame 11 . In addition, the movable contact part 40 is accommodated in the arc chamber 21 to be movable up and down.

A fixed contact 22 is positioned above the movable contact part 40 . The movable contact part 40 is accommodated in the arc chamber 21 so as to be movable in a direction toward the fixed contact 22 and a direction away from the fixed contact 22 .

The core part 30 is positioned below the movable contact part 40 . The above movement of the movable contact part 40 may be achieved by the movement of the movable core 32 .

The movable contact part 40 includes a housing 41 , a cover 42 , a movable contact 43 , a shaft 44 , and an elastic part 45 .

The housing 41 accommodates the movable contact 43 and the elastic part 45 for elastically supporting the movable contact 43 .

In the illustrated embodiment, the housing 41 has one side and the other side opposite thereto open. The movable contact 43 may be inserted through the open portion.

The unopened side of the housing 41 may be configured to surround the accommodated movable contact 43 .

A cover 42 is provided on the upper side of the housing 41 . The cover 42 covers the upper surface of the movable contact 43 accommodated in the housing 41 .

The housing 41 and the cover 42 are preferably formed of an insulating material to prevent unintentional energization. In one embodiment, the housing 41 and the cover 42 may be formed of a synthetic resin or the like.

The lower side of the housing 41 is connected to the shaft 44 . When the movable core 32 connected to the shaft 44 is moved upward or downward, the housing 41 and the movable contact 43 accommodated therein may also be moved upward or downward.

The housing 41 and the cover 42 may be coupled by any member. In an embodiment, the housing 41 and the cover 42 may be coupled by a fastening member (not shown) such as a bolt or a nut.

The movable contactor 43 is in contact with the fixed contactor 22 according to the application of the control power, so that the DC relay 1 is energized with an external power source and a load. In addition, the movable contactor 43 is spaced apart from the fixed contactor 22 when the application of the control power is released, so that the DC relay 1 does not conduct electricity with an external power source and a load.

The movable contact 43 is positioned adjacent to the stationary contact 22 .

The upper side of the movable contact 43 is partially covered by the cover 42 . In one embodiment, a portion of the upper surface of the movable contactor 43 may be in contact with the lower surface of the cover 42 .

The lower side of the movable contact 43 is elastically supported by the elastic part 45 . To prevent the movable contact 43 from being arbitrarily moved downward, the elastic part 45 may elastically support the movable contact 43 in a compressed state by a predetermined distance.

The movable contact 43 is formed to extend in the longitudinal direction, in the illustrated embodiment, in the left-right direction. That is, the length of the movable contact 43 is formed longer than the width. Accordingly, both ends in the longitudinal direction of the movable contact 43 accommodated in the housing 41 are exposed to the outside of the housing 41 .

A contact protrusion formed to protrude upward by a predetermined distance may be formed at both ends. A fixed contact 22 is in contact with the contact protrusion.

The contact protrusion may be formed at a position corresponding to each of the fixed contacts 22a and 22b. Accordingly, the moving distance of the movable contactor 43 may be reduced, and contact reliability between the fixed contactor 22 and the movable contactor 43 may be improved.

The width of the movable contact 43 may be the same as a distance at which each side of the housing 41 is spaced apart from each other. That is, when the movable contact 43 is accommodated in the housing 41 , both sides of the movable contact 43 in the width direction may contact the inner surface of each side of the housing 41 .

Accordingly, a state in which the movable contact 43 is accommodated in the housing 41 may be stably maintained.

The shaft 44 transmits a driving force generated as the core part 30 is operated to the movable contact part 40 . Specifically, the shaft 44 is connected to the movable core 32 and the movable contact 43 . When the movable core 32 is moved upward or downward, the movable contact 43 may also be moved upward or downward by the shaft 44 .

The shaft 44 is formed to extend in the longitudinal direction, in the illustrated embodiment, in the vertical direction.

The lower end of the shaft 44 is insertedly coupled to the movable core 32 . When the movable core 32 is moved in the vertical direction, the shaft 44 may be moved in the vertical direction together with the movable core 32 .

The body portion of the shaft 44 is vertically movably coupled to the fixed core 31 . A return spring 36 is coupled through the body portion of the shaft 44 .

The upper end of the shaft 44 is coupled to the housing 41 . When the movable core 32 is moved, the shaft 44 and the housing 41 may be moved together.

The upper and lower ends of the shaft 44 may be formed to have a larger diameter than the body portion of the shaft. Accordingly, the shaft 44 may be stably maintained in a coupled state with the housing 41 and the movable core 32 .

The elastic part 45 elastically supports the movable contact 43 . When the movable contact 43 is in contact with the fixed contact 22 , the movable contact 43 tends to be separated from the fixed contact 22 by electromagnetic repulsive force.

At this time, the elastic part 45 elastically supports the movable contact 43 to prevent the movable contact 43 from being arbitrarily separated from the fixed contact 22 .

The elastic part 45 may be provided in any shape capable of storing the restoring force by deformation of the shape and providing the stored restoring force to other members. In one embodiment, the elastic part 45 may be provided as a coil spring.

One end of the elastic part 45 facing the movable contact 43 is in contact with the lower side of the movable contact 43 . In addition, the other end opposite to the one end is in contact with the upper side of the housing 41 .

The elastic part 45 may be compressed by a predetermined distance to elastically support the movable contact 43 in a state in which restoring force is stored. Accordingly, even if an electromagnetic repulsive force is generated between the movable contact 43 and the fixed contact 22 , the movable contact 43 is not arbitrarily moved.

For stable coupling of the elastic part 45 , a protrusion (not shown) inserted into the elastic part 45 may be protruded under the movable contact 43 . Similarly, a protrusion (not shown) inserted into the elastic part 45 may protrude from the upper side of the housing 41 .

3. Description of the arc path forming unit 100, 200, 300, 400, 500 according to an embodiment of the present invention

5 to 26 , arc path forming units 100 , 200 , 300 , 400 , and 500 according to various embodiments of the present disclosure are illustrated. Each arc path forming unit 100 , 200 , 300 , 400 , 500 forms a magnetic field inside the arc chamber 21 . An electromagnetic force is formed in the arc chamber 21 by the current flowing through the DC relay 1 and the formed magnetic field.

The arc generated as the fixed contact 22 and the movable contact 43 are spaced apart is moved to the outside of the arc chamber 21 by the formed electromagnetic force. Specifically, the generated arc is moved along the direction of the formed electromagnetic force. Accordingly, it may be said that the arc path forming units 100 , 200 , 300 , 400 , and 500 form the arc path A.P, which is a path through which the generated arc flows.

The arc path forming units 100 , 200 , 300 , 400 and 500 are located in a space formed inside the upper frame 11 . The arc path forming units 100 , 200 , 300 , 400 and 500 are disposed to surround the arc chamber 21 . In other words, the arc chamber 21 is located inside the arc path forming part 100 , 200 , 300 , 400 , 500 .

A fixed contact 22 and a movable contact 43 are positioned inside the arc path forming unit 100 , 200 , 300 , 400 , and 500 . The arc generated by the fixed contact 22 and the movable contact 43 being spaced apart may be induced by an electromagnetic force formed by the arc path forming units 100 , 200 , 300 , 400 and 500 .

The arc path forming unit 100 , 200 , 300 , 400 , 500 according to various embodiments of the present invention includes a Halbach arrangement or a magnet unit. The Halbach arrangement or magnet unit forms a magnetic field inside the arc path forming unit 100 in which the fixed contact 22 and the movable contact 43 are accommodated. In this case, the Halbach arrangement or the magnet unit may form a magnetic field by itself and between each other.

The magnetic field formed by the Halbach arrangement and the magnet part forms an electromagnetic force together with the current passed through the stationary contact 22 and the movable contact 43 . The formed electromagnetic force induces an arc generated when the fixed contact 22 and the movable contact 43 are spaced apart.

In this case, the arc path forming units 100 , 200 , 300 , 400 , and 500 form an electromagnetic force in a direction away from the center C of the space 115 . Accordingly, the arc path A.P is also formed in a direction away from the center portion C of the space.

As a result, each component provided in the DC relay 1 is not damaged by the generated arc. Furthermore, the generated arc can be rapidly discharged to the outside of the arc chamber 21 .

Hereinafter, with reference to the accompanying drawings, the configuration of each arc path forming unit ( 100 , 200 , 300 , 400 , 500 ) and the path of the arc formed by each arc path forming unit ( 100 , 200 , 300 , 400 , 500 ) (A.P) will be described in detail.

The arc path forming units 100 , 200 , 300 , 400 , and 500 according to various embodiments to be described below may include a Halbach arrangement positioned on one or more sides of left and right sides.

In addition, the arc path forming unit 100 , 200 , 300 , 400 , 500 may include a magnet unit having a polarity in the longitudinal direction, which is positioned on at least one side of the front side and the rear side.

As will be described later, the rear side may be defined as a direction adjacent to the first surfaces 111 , 211 , 311 , 411 , and 511 , and the front side may be adjacent to the second surfaces 112 , 212 , 312 , 412 , and 512 .

In addition, the left side may be defined in a direction adjacent to the third surfaces 113 , 213 , 313 , 413 , and 513 , and the right side may be defined in a direction adjacent to the fourth surfaces 114 , 214 , 314 , 414 , and 514 .

(1) Description of the arc path forming unit 100 according to an embodiment of the present invention

Hereinafter, the arc path forming unit 100 according to an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 8 .

5 and 6 , the arc path forming unit 100 according to the illustrated embodiment is a magnet frame 110 , a first Halbach arrangement 120 , a second Halbach arrangement 130 , and a first magnet It includes a part 140 , a second magnet part 150 , a third magnet part 160 , and a fourth magnet part 170 .

The magnet frame 110 forms a skeleton of the arc path forming unit 100 . The first and second Halbach arrays 120 and 130 and the first to fourth magnet units 140 , 150 , 160 and 170 are disposed on the magnet frame 110 . In an embodiment, the first and second Halbach arrays 120 and 130 and the first to fourth magnet parts 140 , 150 , 160 , 170 may be coupled to the magnet frame 110 .

The magnet frame 110 has a rectangular cross-section extending in the longitudinal direction, in the illustrated embodiment, in the left and right directions. The shape of the magnet frame 110 may be changed according to the shape of the upper frame 11 and the arc chamber 21 .

The magnet frame 110 includes a first surface 111 , a second surface 112 , a third surface 113 , a fourth surface 114 , and a space portion 115 .

The first surface 111 , the second surface 112 , the third surface 113 , and the fourth surface 114 form an outer peripheral surface of the magnet frame 110 . That is, the first surface 111 , the second surface 112 , the third surface 113 , and the fourth surface 114 function as a wall of the magnet frame 110 .

Outside of the first surface 111 , the second surface 112 , the third surface 113 , and the fourth surface 114 may be in contact with or fixedly coupled to the inner surface of the upper frame 11 . In addition, on the inside of the first surface 111, the second surface 112, the third surface 113 and the fourth surface 114, the first and second Halbach arrangements 120, 130 and the first to first 4 magnet parts 140 , 150 , 160 , 170 may be positioned.

In the illustrated embodiment, the first side 111 forms the rear side. The second surface 112 forms a front side surface and faces the first surface 111 . Further, the third face 113 forms the left face. The fourth side 114 forms the right side and faces the third side 113 .

That is, the first surface 111 and the second surface 112 face each other with the space portion 115 interposed therebetween. In addition, the third surface 113 and the fourth surface 114 face each other with the space portion 115 interposed therebetween.

The first surface 111 is continuous with the third surface 113 and the fourth surface 114 . The first surface 111 may be coupled to the third surface 113 and the fourth surface 114 at a predetermined angle. In an embodiment, the predetermined angle may be a right angle.

The second surface 112 is continuous with the third surface 113 and the fourth surface 114 . The second surface 112 may be coupled to the third surface 113 and the fourth surface 114 at a predetermined angle. In an embodiment, the predetermined angle may be a right angle.

Each edge at which the first surface 111 to the fourth surface 114 are connected to each other may be chamfered.

For coupling of the respective surfaces 111, 112, 113, and 114 with the first and second Halbach arrays 120 and 130 and the first to fourth magnet parts 140, 150, 160, 170, a fastening member ( not shown) may be provided.

Although not shown, an arc discharge hole (not shown) may be formed through at least one of the first surface 111 , the second surface 112 , the third surface 113 , and the fourth surface 114 . . The arc discharge hole (not shown) may function as a passage through which the arc generated in the space 115 is discharged.

A space surrounded by the first surface 111 to the fourth surface 114 may be defined as the space portion 115 .

The fixed contact 22 and the movable contact 43 are accommodated in the space 115 . In addition, the arc chamber 21 is accommodated in the space 115 .

In the space portion 115 , the movable contact 43 may be moved in a direction toward the fixed contact 22 (ie, a downward direction) or a direction away from the fixed contact 22 (ie, an upward direction).

In addition, a path A.P of the arc generated in the arc chamber 21 is formed in the space portion 115 . This is achieved by the magnetic field formed by the first and second Halbach arrays 120 , 130 and the first to fourth magnet parts 140 , 150 , 160 , 170 .

A central portion of the space portion 115 may be defined as a central portion (C). A straight line distance from each corner where the first to fourth surfaces 111 , 112 , 113 , and 114 are connected to each other to the center C may be formed to be the same.

The central portion C is positioned between the first fixed contact 22a and the second fixed contact 22b. In addition, the central portion of the movable contact portion 40 is positioned vertically below the central portion (C). That is, the central portion of the housing 41 , the cover 42 , the movable contact 43 , the shaft 44 , and the elastic part 45 is positioned vertically below the central portion (C).

Accordingly, when the generated arc is moved toward the central portion (C), damage to the above components may occur. To prevent this, the arc path forming unit 100 according to the present embodiment includes first and second Halbach arrays 120 and 130 and first to fourth magnet units 140 , 150 , 160 , 170 . do.

In the illustrated embodiment, a plurality of magnetic materials constituting the first Halbach array 120 are sequentially arranged in parallel from the front side to the rear side. That is, the first Halbach arrangement 120 is formed to extend in the front-rear direction.

The first Halbach array 120 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the first Halbach arrangement 120 may form a magnetic field together with the second Halbach arrangement 130 and the first to fourth magnet parts 140 , 150 , 160 , 170 .

The first Halbach arrangement 120 may be positioned adjacent to any one of the third and fourth surfaces 113 and 114 . In an embodiment, the first Halbach arrangement 120 may be coupled to the inner side of the one surface (ie, the direction toward the space 115 ).

In the illustrated embodiment, the first Halbach arrangement 120 is disposed on the inside of the third surface 113 and adjacent to the third surface 113 . Although not shown, the first Halbach arrangement 120 may be disposed inside the fourth surface 114 and adjacent to the fourth surface 114 .

The first Halbach arrangement 120 is disposed to face the second Halbach arrangement 130 . In the illustrated embodiment, the first Halbach arrangement 120 is disposed to face the second Halbach arrangement 130 positioned inside the fourth surface 114 .

Between the first Halbach arrangement 120 and the second Halbach arrangement 130 , the space portion 115 and the fixed contactor 22 and the movable contactor 43 accommodated in the space portion 115 are positioned.

The first Halbach array 120 can strengthen the magnetic field itself, the second Halbach array 130, and the strength of the magnetic field formed with the first to fourth magnet parts 140, 150, 160, 170. have. Since the direction of the magnetic field formed by the first Halbach array 120 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the first Halbach arrangement 120 includes a first block 121 , a second block 122 , and a third block 123 . It will be understood that a plurality of magnetic materials constituting the first Halbach array 120 are named blocks 121 , 122 , and 123 , respectively.

The first to third blocks 121 , 122 , and 123 may be formed of a magnetic material. In an embodiment, the first to third blocks 121 , 122 , and 123 may be provided with permanent magnets or electromagnets.

The first to third blocks 121 , 122 , and 123 may be arranged side by side in one direction. In the illustrated embodiment, the first to third blocks 121 , 122 , and 123 are arranged in parallel in the direction in which the third surface 113 extends, that is, in the front-rear direction.

Among the first to third blocks 121 , 122 , and 123 , the first block 121 is disposed on the rearmost side, and the third block 123 is disposed on the most front side. Also, the second block 122 is positioned between the first block 121 and the third block 123 .

In an embodiment, the second block 122 may be in contact with the first and third blocks 121 and 123 , respectively.

The second block 122 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the fourth surface 114 , in the left and right directions in the illustrated embodiment. Also, the second block 122 may be disposed to overlap the second block 132 of the second Halbach arrangement 130 in the left and right directions.

Each block 121 , 122 , 123 includes a plurality of faces.

Specifically, the first block 121 includes a first inner surface 121a facing the second block 122 and a first outer surface 121b opposite to the second block 122 .

The second block 122 has a second inner surface 122a facing the space 115 or the second Halbach arrangement 130 and a second outer surface opposite to the space 115 or the second Halbach arrangement 130 . (122b).

In addition, the third block 123 includes a third inner surface 123a facing the second block 122 and a third outer surface 123b opposite to the third block 123 .

The plurality of surfaces of each block 121 , 122 , 123 may be magnetized according to a predetermined rule to form a Halbach arrangement.

5, the first to third inner surfaces 121a, 122a, and 123a are magnetized to have the same polarity. In this case, the first to third inner surfaces 121a , 122a , and 123a may be magnetized to have the same polarity as that of each of the outer surfaces 131b , 132b and 133b of the second Halbach arrangement 130 .

Further, the first to third inner surfaces (121a, 122a, 123a) may be magnetized with the same polarity as the respective opposite surfaces (142, 152, 162, 172) of each magnet unit (140, 150, 160, 170). .

In addition, the first to third outer surfaces 121b, 122b, and 123b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 121b , 122b , and 123b may be magnetized to have the same polarity as the respective inner surfaces 131a , 132a , 133a of the second Halbach arrangement 130 .

Furthermore, the first to third outer surfaces 121b, 122b, and 123b may be magnetized with the same polarity as the respective opposite surfaces 141, 151, 161, and 171 of the respective magnet parts 140, 150, 160, and 170. .

In the embodiment shown in FIG. 6 , the first to third inner surfaces 121a , 122a , and 123a are magnetized with the same polarity. In this case, the first to third inner surfaces 121a , 122a , and 123a may be magnetized to have the same polarity as the respective inner surfaces 131a , 132a , 133a of the second Halbach arrangement 130 .

Further, the first to third inner surfaces (121a, 122a, 123a) may be magnetized with the same polarity as the respective opposite surfaces (142, 152, 162, 172) of each magnet unit (140, 150, 160, 170). .

In addition, the first to third outer surfaces 121b, 122b, and 123b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 121b, 122b, and 123b may be magnetized to have the same polarity as the respective outer surfaces 131b, 132b, and 133b of the second Halbach arrangement 130 .

Furthermore, the first to third outer surfaces 121b, 122b, and 123b may be magnetized with the same polarity as the respective opposite surfaces 141, 151, 161, and 171 of the respective magnet parts 140, 150, 160, and 170. .

In the illustrated embodiment, a plurality of magnetic materials constituting the second Halbach array 130 are sequentially arranged in parallel from the front side to the rear side. That is, the second Halbach arrangement 130 is formed to extend in the front-rear direction.

The second Halbach arrangement 130 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the second Halbach arrangement 130 may form a magnetic field together with the first Halbach arrangement 120 and the first to fourth magnet parts 140 , 150 , 160 , 170 .

The second Halbach arrangement 130 may be positioned adjacent to the other one of the third and fourth surfaces 113 and 114 . In one embodiment, the second Halbach arrangement 130 may be coupled to the inner side of the one surface (ie, the direction toward the space portion 115).

In the illustrated embodiment, the second Halbach arrangement 130 is disposed on the inside of the fourth surface 114 and adjacent to the fourth surface 114 . Although not shown, the second Halbach arrangement 130 may be disposed inside the third surface 113 and adjacent to the third surface 113 .

The second Halbach arrangement 130 is disposed to face the first Halbach arrangement 120 . In the illustrated embodiment, the second Halbach arrangement 130 is disposed to face the first Halbach arrangement 120 positioned inside the third surface 113 .

Between the second Halbach arrangement 130 and the first Halbach arrangement 120 , the space portion 115 and the fixed contactor 22 and the movable contactor 43 accommodated in the space portion 115 are positioned.

The second Halbach arrangement 130 may enhance the strength of the magnetic field formed by itself, the first Halbach arrangement 120 , and the magnetic field formed with each magnet unit 140 , 150 , 160 , 170 . Since the direction of the magnetic field formed by the second Halbach arrangement 130 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the second Halbach arrangement 130 includes a first block 131 , a second block 132 , and a third block 133 . It will be understood that the plurality of magnetic materials constituting the second Halbach array 130 are named blocks 131 , 132 , and 133 , respectively.

The first to third blocks 131 , 132 , and 133 may be formed of a magnetic material. In an embodiment, the first to third blocks 131 , 132 , 133 may be provided with permanent magnets or electromagnets.

The first to third blocks 131 , 132 , and 133 may be arranged side by side in one direction. In the illustrated embodiment, the first to third blocks 131 , 132 , and 133 are arranged in parallel in the direction in which the fourth surface 114 extends, that is, in the front-rear direction.

Among the first to third blocks 131 , 132 , and 133 , the first block 131 is disposed on the rearmost side, and the third block 133 is disposed on the most front side. Also, the second block 132 is positioned between the first block 131 and the third block 133 .

In an embodiment, the second block 132 may be in contact with the first and third blocks 131 and 133 , respectively.

The second block 132 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the third surface 113, and in the left and right directions in the illustrated embodiment. Also, the second block 132 may be disposed to overlap the second block 122 of the first Halbach arrangement 120 in the left and right directions.

Each block 131 , 132 , 133 includes a plurality of faces.

Specifically, the first block 131 includes a first inner surface 131a facing the second block 132 and a first outer surface 131b opposite to the second block 132 .

The second block 132 has a second inner surface 132a facing the space 115 or the first Halbach arrangement 120 and a second outer surface opposite to the space 115 or the first Halbach arrangement 120 . (132b).

In addition, the third block 133 includes a third inner surface 133a facing the second block 132 and a third outer surface 133b opposite to the third block 133 .

The plurality of surfaces of each block 131 , 132 , 133 may be magnetized according to a predetermined rule to form a Halbach arrangement.

5, the first to third inner surfaces 131a, 132a, and 133a are magnetized to have the same polarity. In this case, the first to third inner surfaces 131a , 132a , and 133a may be magnetized to have the same polarity as the respective outer surfaces 121b , 122b and 123b of the first Halbach array 120 .

Furthermore, the first to third inner surfaces 131a , 132a , and 133a may be magnetized with the same polarity as the respective opposite surfaces 141 , 151 , 161 , and 171 of each magnet unit 140 , 150 , 160 , 170 . .

In addition, the first to third outer surfaces 131b, 132b, and 133b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 131b , 132b , and 133b may be magnetized to have the same polarity as the respective inner surfaces 131a , 132a , 133a of the first Halbach array 120 .

Furthermore, the first to third outer surfaces 131b, 132b, and 133b may be magnetized with the same polarity as the respective opposite surfaces 142, 152, 162, and 172 of the respective magnet parts 140, 150, 160, and 170. .

In the embodiment shown in FIG. 6 , the first to third inner surfaces 131a , 132a , and 133a are magnetized with the same polarity. In this case, the first to third inner surfaces 131a , 132a , and 133a may be magnetized to have the same polarity as the respective inner surfaces 121a , 122a , 123a of the first Halbach array 120 .

Furthermore, the first to third inner surfaces 131a , 132a , and 133a may be magnetized with the same polarity as the opposite surfaces 142 , 152 , 162 and 172 of each magnet unit 140 , 150 , 160 , 170 . .

In addition, the first to third outer surfaces 131b, 132b, and 133b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 131b , 132b , and 133b may be magnetized to have the same polarity as the respective outer surfaces 121b , 122b and 123b of the first Halbach arrangement 120 .

Furthermore, the first to third outer surfaces 131b , 132b , and 133b may be magnetized with the same polarity as the respective opposite surfaces 141 , 151 , 161 and 171 of the respective magnet parts 140 , 150 , 160 , 170 . .

The first to fourth magnet parts 140 , 150 , 160 , 170 are magnetic fields together with themselves, the first and second Halbach arrays 120 , 130 and different magnet parts 140 , 150 , 160 , 170 . to form The arc path A.P may be formed in the arc chamber 21 by the magnetic field formed by the first to fourth magnet units 140 , 150 , 160 , and 170 .

The first to fourth magnet parts 140 , 150 , 160 , and 170 may be provided in any shape capable of forming a magnetic field by being magnetized. In an embodiment, the first to fourth magnet units 140 , 150 , 160 , and 170 may be provided as permanent magnets or electromagnets.

The first to fourth magnet parts 140 , 150 , 160 , and 170 may be positioned adjacent to the first to fourth surfaces 111 , 112 , 113 , and 114 , respectively.

In the illustrated embodiment, the first magnet unit 140 and the second magnet unit 150 are positioned adjacent to the first surface 111 . The first magnet unit 140 is positioned to be biased toward the third surface 113 . The second magnet part 150 is positioned to be biased toward the fourth surface 114 .

The first magnet unit 140 and the second magnet unit 150 are disposed to face the third magnet unit 160 and the fourth magnet unit 170 , respectively, with the space unit 115 interposed therebetween.

In an embodiment, the first magnet unit 140 may overlap the first fixed contactor 22a and the third magnet unit 160 in the front-rear direction. In addition, the second magnet unit 150 may overlap the second fixed contact 22b and the fourth magnet unit 170 in the front-rear direction.

The first magnet unit 140 and the second magnet unit 150 are arranged in parallel with each other in the extending direction thereof. In an embodiment, the first magnet unit 140 and the second magnet unit 150 may be in contact with each other.

In the illustrated embodiment, the third magnet portion 160 and the fourth magnet portion 170 are positioned adjacent to the second surface 112 . The third magnet unit 160 is positioned to be biased toward the third surface 113 . The fourth magnet portion 170 is positioned to be biased toward the fourth surface 114 .

The third magnet part 160 and the fourth magnet part 170 are disposed to face the first magnet part 140 and the second magnet part 150, respectively, with the space part 115 interposed therebetween.

In an embodiment, the third magnet unit 160 may overlap the first fixed contactor 22a and the first magnet unit 140 in the front-rear direction. Also, the fourth magnet unit 170 may overlap the second fixed contactor 22b and the second magnet unit 150 in the front-rear direction.

The third magnet unit 160 and the fourth magnet unit 170 are arranged in parallel with each other in the extending direction thereof. In an embodiment, the third magnet unit 160 and the fourth magnet unit 170 may be in contact with each other.

The first to fourth magnet parts 140 , 150 , 160 , and 170 are formed to extend in one direction. In the illustrated embodiment, the first to fourth magnet parts 140 , 150 , 160 , 170 are formed to extend in the left and right directions.

Each of the first to fourth magnet parts 140 , 150 , 160 , and 170 includes a plurality of surfaces.

Specifically, the first magnet unit 140 includes a first opposing surface 141 facing the second magnet unit 150 and a first opposing surface 142 facing the second magnet unit 150 .

The second magnet unit 150 includes a second opposing surface 151 facing the first magnet unit 140 and a second opposing surface 152 facing the first magnet unit 140 .

The third magnet unit 160 includes a third opposing surface 161 facing the fourth magnet unit 170 and a third opposing surface 162 facing the fourth magnet unit 170 .

The fourth magnet unit 170 includes a fourth opposing surface 171 facing the third magnet unit 160 and a fourth opposing surface 172 facing the third magnet unit 160 .

Each surface of the first to fourth magnet units 140 , 150 , 160 , and 170 may be magnetized according to a predetermined rule.

In the embodiment shown in FIG. 5 , the first to fourth opposing surfaces 141 , 151 , 161 , and 171 are magnetized with the same polarity. In this case, the first to fourth opposing surfaces 141 , 151 , 161 and 171 are the first to third outer surfaces 121b , 122b , 123b of the first Halbach arrangement 120 and the second Halbach arrangement 130 ). The first to third inner surfaces 131a, 132a, and 133a are magnetized to have the same polarity.

Similarly, the first to fourth opposite surfaces 142 , 152 , 162 , and 172 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 142 , 152 , 162 , 172 are the first to third inner surfaces 121a , 122a , 123a of the first Halbach arrangement 120 and the second Halbach arrangement 130 ). The first to third outer surfaces 131b, 132b, and 133b are magnetized to the same polarity.

In the embodiment shown in FIG. 6 , the first to fourth opposing surfaces 141 , 151 , 161 , and 171 are magnetized with the same polarity. In this case, the first to fourth opposing surfaces 141 , 151 , 161 and 171 are the first to third outer surfaces 121b , 122b , 123b of the first Halbach arrangement 120 and the second Halbach arrangement 130 ). The first to third outer surfaces 131b, 132b, and 133b are magnetized to the same polarity.

Similarly, the first to fourth opposite surfaces 142 , 152 , 162 , and 172 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 142 , 152 , 162 , 172 are the first to third inner surfaces 121a , 122a , 123a of the first Halbach arrangement 120 and the second Halbach arrangement 130 ). The first to third inner surfaces 131a, 132a, and 133b are magnetized to the same polarity.

Hereinafter, the arc path A.P formed by the arc path forming unit 100 according to the present embodiment will be described in detail with reference to FIGS. 7 and 8 .

7, each inner surface (121a, 122a, 123a) of the first Halbach arrangement 120 and each inner surface (131a, 132a, 133a) of the second Halbach arrangement 130 are magnetized with different polarities .

That is, each inner surface 121a, 122a, 123a of the first Halbach arrangement 120 is magnetized to an N pole, and each inner surface 131a, 132a, 133a of the second Halbach arrangement 130 is magnetized to an S pole.

At this time, each of the opposite surfaces 141, 151, 161, 171 of each magnet unit 140, 150, 160, 170 has a polarity different from that of each inner surface 121a, 122a, 123a of the first Halbach arrangement 120, That is, it is magnetized to the S pole.

Accordingly, between the second block 122 of the first Halbach arrangement 120 and the second block 132 of the second Halbach arrangement 130, the second inner surface 122a to the second inner surface 132b A magnetic field is formed in the direction of

Referring to FIG. 8 , each inner surface 121a , 122a , 123a of the first Halbach arrangement 120 and each inner surface 131a , 132a , 133a of the second Halbach arrangement 130 are magnetized with the same polarity. .

That is, the inner surfaces 121a, 122a, 123a of the first Halbach arrangement 120 and the inner surfaces 131a, 132a, 133a of the second Halbach arrangement 130 are all magnetized to the N pole.

At this time, each of the opposite surfaces 141, 151, 161, 171 of each magnet unit 140, 150, 160, 170 has a polarity different from that of each inner surface 121a, 122a, 123a of the first Halbach arrangement 120, That is, it is magnetized to the S pole.

Accordingly, between the second block 122 of the first Halbach arrangement 120 and the second block 132 of the second Halbach arrangement 130, a magnetic field in a repulsive direction is formed.

In addition, between the first Halbach array 120 and each magnet portion (140, 150, 160, 170), the magnetic field in the direction from the second inner surface (122a) toward each of the opposite surfaces (141, 151, 161, 171) this is formed

Similarly, between the second Halbach arrangement 130 and each magnet portion (140, 150, 160, 170), in the direction from the second inner surface (132a) toward each of the opposite surfaces (141, 151, 161, 171) A magnetic field is formed.

At this time, by the magnetic field formed by the first and third blocks 121 , 131 , 123 , 133 , the strength of the magnetic field formed between the first Halbach array 120 and the second Halbach array 130 is strengthened. can be

In the embodiment shown in FIGS. 7A and 8A , the direction of the current is the direction from the second fixed contact 22b to the movable contact 43 through the first fixed contactor 22a. .

In the embodiment shown in (a) of FIG. 7 , if Fleming's rule is applied to the first fixed contactor 22a, the electromagnetic force generated near the first fixed contactor 22a is the left side of the rear. formed toward Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

In the embodiment shown in (a) of FIG. 8 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in FIGS. 7 (b) and 8 (b), the direction of the current is the direction from the first fixed contact 22a through the movable contact 43 to the second fixed contact 22b. .

In the embodiment shown in (b) of FIG. 7 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated near the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in (b) of FIG. 8 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

Although not shown, when the polarity of each surface of the first and second Halbach arrays 120 and 130 and the first to fourth magnet parts 140 , 150 , 160 , 170 is changed, the first and second The directions of the magnetic fields formed in the Halbach arrays 120 and 130 and the first to fourth magnet units 140 , 150 , 160 and 170 are opposite to each other. Accordingly, the path A.P of the generated electromagnetic force and arc is also formed in the reverse direction.

That is, in the energized situation as shown in (a) of FIG. 7 , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contactor 22a is formed toward the front left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

In a energized situation as shown in FIG. 8A , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

Similarly, in the energized situation as shown in FIG. 7B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

In a energized situation as shown in FIG. 8B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

Accordingly, the arc path forming unit 100 according to the present embodiment, the polarity or direct current of the first and second Halbach arrays 120 and 130 and the first to fourth magnet units 140 , 150 , 160 , 170 . Regardless of the direction of the current flowing through the relay 1 , the path A.P of the electromagnetic force and the arc may be formed in a direction away from the center C.

Accordingly, damage to each component of the DC relay 1 disposed adjacent to the central portion C can be prevented. Furthermore, the generated arc can be quickly discharged to the outside, so that the operation reliability of the DC relay 1 can be improved.

(2) Description of the arc path forming unit 200 according to another embodiment of the present invention

Hereinafter, the arc path forming unit 200 according to another embodiment of the present invention will be described in detail with reference to FIGS. 9 to 14 .

9 to 12 , the arc path forming unit 200 according to the illustrated embodiment includes a magnet frame 210 , a Halbach arrangement 220 , and first to fifth magnet units 230 , 240 , 250 , 260, 270).

The magnet frame 210 according to the present embodiment has the same structure and function as the magnet frame 110 according to the above-described embodiment. However, there is a difference in the arrangement method of the Halbach arrangement 220 and the first to fifth magnet parts 230 , 240 , 250 , 260 , 270 arranged on the magnet frame 210 according to the present embodiment.

Accordingly, the description of the magnet frame 210 will be replaced with the description of the magnet frame 110 according to the above-described embodiment.

In the illustrated embodiment, a plurality of magnetic materials constituting the Halbach array 220 are sequentially arranged in parallel from the front side to the rear side. That is, the Halbach arrangement 220 is formed to extend in the front-rear direction.

In addition, the Halbach array 220 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the Halbach array 220 may form a magnetic field together with the first to fifth magnet parts 230 , 240 , 250 , 260 , 270 .

The Halbach arrangement 220 may be positioned adjacent to any one of the third and fourth surfaces 213 and 214 . In one embodiment, the Halbach arrangement 220 may be coupled to the inner side (ie, the direction toward the space portion 215) of any one of the surfaces.

9 and 11 , the Halbach arrangement 220 is disposed inside the third face 213 and adjacent to the third face 213 . 10 and 12 , the Halbach arrangement 220 may be disposed inside the fourth face 214 and adjacent to the fourth face 214 .

The Halbach arrangement 220 is disposed to face the fifth magnet unit 270 . In the embodiment shown in FIGS. 9 and 11 , the Halbach arrangement 220 is disposed to face the fifth magnet part 270 positioned inside the fourth surface 214 . In the embodiment shown in FIGS. 10 and 12 , the Halbach arrangement 220 is disposed to face the fifth magnet part 270 positioned inside the third surface 213 .

Between the Halbach arrangement 220 and the fifth magnet unit 270 , the space 215 and the fixed contact 22 and the movable contact 43 accommodated in the space 215 are positioned.

The Halbach array 220 may enhance the strength of the magnetic field formed by itself and the magnetic field formed with the first to fifth magnet parts 230 , 240 , 250 , 260 , 270 . Since the direction of the magnetic field formed by the Halbach array 220 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the Halbach arrangement 220 includes a first block 221 , a second block 222 and a third block 223 . It will be understood that a plurality of magnetic materials constituting the Halbach array 220 are named blocks 221 , 222 , and 223 , respectively.

The first to third blocks 221 , 222 , and 223 may be formed of a magnetic material. In an embodiment, the first to third blocks 221 , 222 , and 223 may be provided with permanent magnets or electromagnets.

The first to third blocks 221 , 222 , and 223 may be arranged side by side in one direction. In the illustrated embodiment, the first to third blocks 221 , 222 , and 223 are arranged in parallel in the direction in which the third surface 213 or the fourth surface 214 extends, that is, in the front-rear direction.

Among the first to third blocks 221 , 222 , and 223 , the first block 221 is disposed on the rearmost side, and the third block 223 is disposed on the most front side. Also, the second block 222 is positioned between the first block 221 and the third block 223 .

In an embodiment, the second block 222 may contact the first and third blocks 221 and 223 , respectively.

The second block 222 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the fifth magnet unit 270 , in the left and right directions in the illustrated embodiment. In addition, the second block 222 may be disposed to overlap the fifth magnet part 270 in the left and right directions.

Each block 221 , 222 , 223 includes a plurality of faces.

Specifically, the first block 221 includes a first inner surface 221a facing the second block 222 and a first outer surface 221b opposite to the second block 222 .

The second block 222 has a second inner surface 222a facing the space 215 or the fifth magnet 270 and a second outer surface 222b opposite to the space 215 or the fifth magnet 270 . ) is included.

In addition, the third block 223 includes a third inner surface 223a facing the second block 222 and a third outer surface 223b opposite to the third block 223 .

The plurality of surfaces of each block 221 , 222 , 223 may be magnetized according to a predetermined rule to form a Halbach arrangement.

9 and 10 , the first to third inner surfaces 221a, 222a, and 223a are magnetized with the same polarity. At this time, the first to third inner surfaces (221a, 222a, 223a) of the respective opposite surfaces (232, 242, 252, 262, 272) of the first to fifth magnet parts (230, 240, 250, 260, 270) It can be magnetized with the same polarity.

In addition, the first to third outer surfaces 221b, 222b, and 223b are magnetized to have a polarity different from the polarity. At this time, the first to third outer surfaces (221b, 222b, 223b) of the first to fifth magnet parts (230, 240, 250, 260, 270) of each of the opposite surfaces (231, 241, 251, 261, 271) of It can be magnetized with the same polarity.

11 and 12 , the first to third inner surfaces 221a, 222a, and 223a are magnetized with the same polarity. In this case, the first to third inner surfaces 221a , 222a , and 223a may be magnetized with the same polarity as the fifth opposite surface 271 of the fifth magnet part 270 .

Further, the first to third inner surfaces (221a, 222a, 223a) have the same polarity as the polarities of the respective opposite surfaces (232, 242, 252, 262) of the first to fourth magnet parts (230, 240, 250, 260). can be magnetized.

In addition, the first to third outer surfaces 221b, 222b, and 223b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 221b , 222b , and 223b may be magnetized with the same polarity as the fifth opposite surface 272 of the fifth magnet unit 270 .

Further, the first to third outer surfaces (221b, 222b, 223b) have the same polarity as the polarities of the respective opposite surfaces (231, 241, 251, 261) of the first to fourth magnet parts (230, 240, 250, 260). can be magnetized.

The first to fifth magnet parts 230 , 240 , 250 , 260 , 270 form a magnetic field together with themselves, the Halbach arrangement 220 and different magnet parts 230 , 240 , 250 , 270 . The arc path A.P may be formed in the arc chamber 21 by the magnetic field formed by the first to fifth magnet parts 230 , 240 , 250 , 260 , and 270 .

The first to fifth magnet parts 230 , 240 , 250 , 260 , and 270 may be provided in any shape capable of forming a magnetic field by being magnetized. In an embodiment, the first to fifth magnet parts 230 , 240 , 250 , 260 , 270 may be provided with permanent magnets or electromagnets.

The first to fifth magnet parts 230 , 240 , 250 , 260 , and 270 may be positioned adjacent to the first to fourth surfaces 211 , 212 , 213 and 214 , respectively.

In the illustrated embodiment, the first magnet part 230 and the second magnet part 240 are positioned adjacent to the first surface 211 . The first magnet part 230 is positioned to be biased toward the third surface 213 . The second magnet part 240 is positioned to be biased toward the fourth surface 214 .

The first magnet part 230 and the second magnet part 240 are disposed to face the third magnet part 250 and the fourth magnet part 260 , respectively, with the space part 215 interposed therebetween.

In an embodiment, the first magnet unit 230 may overlap the first fixed contactor 22a and the third magnet unit 250 in the front-rear direction. In addition, the second magnet part 240 may overlap the second fixed contactor 22b and the fourth magnet part 260 in the front-rear direction.

The first magnet part 230 and the second magnet part 240 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the first magnet part 230 and the second magnet part 240 may be in contact with each other.

In the illustrated embodiment, the third magnet part 250 and the fourth magnet part 260 are positioned adjacent to the second surface 212 . The third magnet part 250 is positioned to be biased toward the third surface 213 . The fourth magnet part 260 is positioned to be biased toward the fourth surface 214 .

The third magnet part 250 and the fourth magnet part 260 are disposed to face the first magnet part 230 and the second magnet part 240 , respectively, with the space part 215 interposed therebetween.

In an embodiment, the third magnet part 250 may overlap the first fixed contactor 22a and the first magnet part 230 in the front-rear direction. In addition, the fourth magnet part 260 may overlap the second fixed contactor 22b and the second magnet part 240 in the front-rear direction.

The third magnet part 250 and the fourth magnet part 260 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the third magnet part 250 and the fourth magnet part 260 may be in contact with each other.

The fifth magnet unit 270 is disposed to face the Halbach arrangement 220 . 9 and 11 , the fifth magnet part 270 is positioned adjacent to the fourth surface 214 , inside the fourth surface 214 , and on the inside of the third surface 213 . It is arranged to face the Halbach arrangement 220 in which it is located.

In the embodiment shown in FIGS. 10 and 12 , the fifth magnet part 270 is located adjacent to the third surface 213 , inside the third surface 213 , and on the inside of the fourth surface 214 . It is arranged to face the Halbach arrangement 220 in which it is located.

Between the fifth magnet part 270 and the Halbach arrangement 220 , the space part 215 and the fixed contactor 22 and the movable contactor 43 accommodated in the space part 215 are positioned.

The first to fourth magnet parts 230 , 240 , 250 , and 260 are formed to extend in one direction. In the illustrated embodiment, the first to fourth magnet parts 230 , 240 , 250 , 260 are formed to extend in the left and right directions.

The fifth magnet part 270 is formed to extend in a different direction. In the illustrated embodiment, the fifth magnet part 270 is formed to extend in the front-rear direction.

The first to fifth magnet parts 230 , 240 , 250 , 260 , and 270 each include a plurality of surfaces.

Specifically, the first magnet unit 230 includes a first facing surface 231 facing the second magnet unit 240 and a first facing surface 232 facing the second magnet unit 240 .

The second magnet unit 240 includes a second opposing surface 241 facing the first magnet unit 230 and a second opposing surface 242 facing the first magnet unit 230 .

The third magnet unit 250 includes a third opposing surface 251 facing the fourth magnet unit 260 and a third opposing surface 252 facing the fourth magnet unit 260 .

The fourth magnet unit 260 includes a fourth opposing surface 261 facing the third magnet unit 250 and a fourth opposing surface 262 facing the third magnet unit 250 .

The fifth magnet part 270 has a fifth opposing surface 271 facing the Halbach arrangement 220 or space 215 and a fifth opposing face 271 facing the Halbach arrangement 220 or space 215 ( 272).

Each surface of the first to fifth magnet parts 230 , 240 , 250 , 260 , and 270 may be magnetized according to a predetermined rule.

9 and 10 , the first to fifth opposing surfaces 231 , 241 , 251 , 261 , and 271 are magnetized with the same polarity. At this time, the first to fifth opposing surfaces 231 , 241 , 251 , 261 , and 271 are magnetized with the same polarity as the first to third outer surfaces 221b , 222b and 223b of the Halbach array 220 .

Likewise, the first to fifth opposite surfaces 232 , 242 , 252 , 262 , and 272 are magnetized with a polarity different from the polarity. In this case, the first to fifth opposite surfaces 232 , 242 , 252 , 262 , and 272 are magnetized with the same polarity as the first to third inner surfaces 221a , 222a , 223a of the Halbach array 220 .

11 and 12 , the first to fourth opposing surfaces 231 , 241 , 251 , and 261 are magnetized with the same polarity. In addition, the first to fourth opposing surfaces 231 , 241 , 251 , and 261 are magnetized with a polarity different from that of the fifth opposing surface 271 .

In this case, the first to fourth opposing surfaces 231 , 241 , 251 , and 261 are magnetized with the same polarity as the first to third outer surfaces 221b , 222b and 223b of the Halbach arrangement 220 .

Similarly, the first to fourth opposing surfaces 232 , 242 , 252 , and 262 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 232. 242 , 252 , 262 have the same polarity as the first to third inner surfaces 221a , 222a , 223a and the fifth opposite surface 271 of the Halbach arrangement 220 . is magnetized to

Hereinafter, the arc path A.P formed by the arc path forming unit 200 according to the present embodiment will be described in detail with reference to FIGS. 13 and 14 .

13, each of the inner surfaces 221a, 222a, 223a of the Halbach arrangement 220 and the opposite surfaces 231, 241, 251, 261, and 271) are magnetized with different polarities.

That is, each inner surface (221a, 222a, 223a) of the Halbach arrangement 220 is an N pole, and each of the opposite surfaces 231, 241, 251, 261, and 271) are magnetized to the S pole.

Accordingly, between the Halbach arrangement 220 and the first to fifth magnet parts 230, 240, 250, 260, 270, each of the opposing surfaces 231, 241, 251, 261 in the second inner surface 222a, 271), a magnetic field is formed. In particular, a magnetic field in a direction from the second inner surface 222a toward the fifth opposing surface 271 is predominantly formed.

Referring to FIG. 14 , each inner surface 221a , 222a , 223a of the Halbach array 220 and the fifth opposite surface 271 of the fifth magnet part 270 are magnetized with the same polarity. In addition, the first to fourth opposing surfaces 231 , 241 , 251 , and 261 of the first to fourth magnet parts 230 , 240 , 250 and 260 are magnetized with different polarities.

That is, each of the inner surfaces 221a, 222a, 223a and the fifth opposing face 271 of the Halbach arrangement 220 is an N-pole, and the first to fourth opposing faces 231, 241, 251, 261 are S-poles. is magnetized to

Accordingly, a magnetic field in a direction to repel each other is formed between the Halbach array 220 and the fifth magnet unit 270 . In addition, between the Halbach arrangement 220 and the first to fourth magnet parts 230 , 240 , 250 , 260 , the first to fourth opposing surfaces 231 , 241 , 251 , 261 on the second inner surface 222a ), a magnetic field is formed.

Furthermore, between the fifth magnet part 270 and the first to fourth magnet parts 230 , 240 , 250 , 260 , from the fifth opposing face 271 to the first to fourth opposing faces 231 , 241 , 251, 261), a magnetic field is formed.

At this time, by the magnetic field formed by the first and third blocks 221 and 223 , the magnetic field formed between the Halbach array 220 and the first to fifth magnet parts 230 , 240 , 250 , 260 , 270 . strength can be strengthened.

13 (a) and 14 (a), the direction of the current is the direction from the second fixed contact (22b) to the first fixed contact (22a) through the movable contact (43) .

In the embodiment shown in FIG. 13(a), if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated near the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

In the embodiment shown in (a) of FIG. 14 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in FIGS. 13 (b) and 14 (b), the direction of the current is the direction from the first fixed contact 22a through the movable contact 43 to the second fixed contact 22b. .

In the embodiment shown in (b) of FIG. 13 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated near the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in (b) of FIG. 14 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

Although not shown, when the polarity of each side of the Halbach arrangement 220 and the first to fifth magnet parts 230, 240, 250, 260, 270 is changed, the Halbach arrangement 220 and the first to The directions of the magnetic fields formed in the fifth magnet units 230 , 240 , 250 , 260 and 270 are reversed. Accordingly, the path A.P of the generated electromagnetic force and arc is also formed in the reverse direction.

That is, in the energized situation as shown in (a) of FIG. 13 , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contactor 22a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

In a energized situation as shown in (a) of FIG. 14 , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contactor 22a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

Similarly, in the energized situation as shown in FIG. 13B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

In a energized situation as shown in FIG. 14B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

Accordingly, the arc path forming unit 200 according to the present embodiment is to the polarity or DC relay 1 of the Halbach array 220 and the first to fifth magnet units 230 , 240 , 250 , 260 , 270 . Irrespective of the direction of the current to be passed, the path A.P of the electromagnetic force and arc may be formed in a direction away from the center C.

Accordingly, damage to each component of the DC relay 1 disposed adjacent to the central portion C can be prevented. Furthermore, the generated arc can be quickly discharged to the outside, so that the operation reliability of the DC relay 1 can be improved.

(3) Description of the arc path forming unit 300 according to another embodiment of the present invention

Hereinafter, the arc path forming unit 300 according to another embodiment of the present invention will be described in detail with reference to FIGS. 15 to 20 .

15 to 18 , the arc path forming unit 300 according to the illustrated embodiment is a magnet frame 310 , a first Halbach arrangement 320 , a second Halbach arrangement 330 , and first to and fourth magnet parts 340 , 350 , 360 , 370 .

The magnet frame 310 according to the present embodiment has the same structure and function as the magnet frame 310 according to the above-described embodiment. However, there is a difference in the arrangement method of the first and second Halbach arrays 320 and 330 and the first to fourth magnet parts 340 , 350 , 360 , 370 disposed on the magnet frame 310 according to the present embodiment. there is

Accordingly, the description of the magnet frame 310 will be replaced with the description of the magnet frame 310 according to the above-described embodiment.

In the illustrated embodiment, a plurality of magnetic materials constituting the first Halbach array 320 are sequentially arranged in parallel from the front side to the rear side. That is, the first Halbach arrangement 320 is formed to extend in the front-rear direction.

The first Halbach array 320 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the first Halbach arrangement 320 may form a magnetic field together with the second Halbach arrangement 330 and the first to fourth magnet parts 340 , 350 , 360 , 370 .

The first Halbach arrangement 320 may be positioned adjacent to any one of the third and fourth surfaces 313 and 314 . In one embodiment, the first Halbach arrangement 320 may be coupled to the inner side of the one surface (ie, the direction toward the space portion 315).

In the illustrated embodiment, the first Halbach arrangement 320 is disposed on the inside of the third surface 313 and adjacent to the third surface 313 . Although not shown, the first Halbach arrangement 320 may be disposed inside the fourth surface 314 and adjacent to the fourth surface 314 .

The first Halbach arrangement 320 is disposed to face the second Halbach arrangement 330 . In the illustrated embodiment, the first Halbach arrangement 320 is disposed to face the second Halbach arrangement 330 located inside the fourth surface 314 .

The first Halbach arrangement 320 is positioned to be biased toward any one of the first surface 311 and the second surface 312 . In the embodiment shown in FIGS. 15 and 17 , the first Halbach arrangement 320 is located biased to the second face 312 . In the embodiment shown in FIGS. 16 and 18 , the first Halbach arrangement 320 is located biased to the first surface 311 .

Between the first Halbach arrangement 320 and the second Halbach arrangement 330 , the space 315 and the fixed contact 22 and the movable contact 43 accommodated in the space 315 are positioned.

The first Halbach arrangement 320 can strengthen the magnetic field itself formed, the second Halbach arrangement 330, and the strength of the magnetic field formed with the first to fourth magnet parts 340, 350, 360, 370. have. Since the direction of the magnetic field formed by the first Halbach array 320 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the first Halbach arrangement 320 includes a first block 321 and a second block 322 . It will be understood that a plurality of magnetic materials constituting the first Halbach array 320 are respectively named blocks 321 and 322 .

The first and second blocks 321 and 322 may be formed of a magnetic material. In an embodiment, the first and second blocks 321 and 322 may be provided with permanent magnets or electromagnets.

The first and second blocks 321 and 322 may be arranged side by side in one direction. In the illustrated embodiment, the first and second blocks 321 and 322 are arranged in parallel in the direction in which the third surface 313 extends, that is, in the front-rear direction.

15 and 17 , the first block 321 is disposed at the central portion, and the second block 322 is disposed on the front side of the first block 321 .

16 and 18 , the first block 321 is disposed at the central portion, and the second block 322 is disposed on the rear side of the first block 321 .

In an embodiment, the first block 321 and the second block 322 may contact each other.

The first block 321 may be disposed to overlap each of the fixing contacts 22a and 22b in the direction toward the fourth surface 314 , in the left and right directions in the illustrated embodiment. Also, the first block 321 may be disposed to overlap the first block 331 of the second Halbach arrangement 330 in the left and right directions.

Each block 321 , 322 includes a plurality of faces.

Specifically, the first block 321 is the space portion 315 or the first inner surface 321a facing the second Halbach arrangement 330 and the space portion 315 or the second Halbach arrangement 330 opposite to the other side. and a first outer surface 321b.

The second block 322 includes a second inner surface 322a facing the first block 321 and a second outer surface 322b opposite the first block 321 .

The plurality of surfaces of each block 321 and 322 may be magnetized according to a predetermined rule to form a Halbach arrangement.

15 and 16 , the first and second inner surfaces 321a and 322a are magnetized with the same polarity. In this case, the first and second inner surfaces 321a and 322a may be magnetized to have the same polarity as the polarity of each of the outer surfaces 331b and 332b of the second Halbach arrangement 330 .

Furthermore, the first and second inner surfaces 321a and 322a may be magnetized with the same polarity as the respective opposite surfaces 342 , 352 , 362 and 372 of the respective magnet parts 340 , 350 , 360 and 370 .

In addition, the first and second outer surfaces 321b and 322b are magnetized with a polarity different from the polarity. In this case, the first and second outer surfaces 321b and 322b may be magnetized to have the same polarity as the respective inner surfaces 331a and 332a of the second Halbach arrangement 330 .

Furthermore, the first and second outer surfaces 321b and 322b may be magnetized with the same polarity as the respective opposite surfaces 341 , 351 , 361 and 371 of the respective magnet parts 340 , 350 , 360 and 370 .

17 and 18 , the first and second inner surfaces 321a and 322a are magnetized with the same polarity. In this case, the first and second inner surfaces 321a and 322a may be magnetized to have the same polarity as the respective inner surfaces 331a and 332a of the second Halbach arrangement 330 .

Furthermore, the first and second inner surfaces 321a and 322a may be magnetized with the same polarity as the respective opposite surfaces 342 , 352 , 362 and 372 of the respective magnet parts 340 , 350 , 360 and 370 .

In addition, the first and second outer surfaces 321b and 322b are magnetized with a polarity different from the polarity. In this case, the first and second outer surfaces 321b and 322b may be magnetized to have the same polarity as the respective outer surfaces 331b and 332b of the second Halbach arrangement 330 .

Furthermore, the first and second outer surfaces 321b and 322b may be magnetized with the same polarity as the respective opposite surfaces 341 , 351 , 361 and 371 of the respective magnet parts 340 , 350 , 360 and 370 .

In the illustrated embodiment, a plurality of magnetic materials constituting the second Halbach array 330 are sequentially arranged in parallel from the front side to the rear side. That is, the second Halbach arrangement 330 is formed to extend in the front-rear direction.

The second Halbach array 330 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the second Halbach arrangement 330 may form a magnetic field together with the first Halbach arrangement 320 and the first to fourth magnet parts 340 , 350 , 360 , 370 .

The second Halbach arrangement 330 may be positioned adjacent to the other of the third and fourth surfaces 313 and 314 . In one embodiment, the second Halbach arrangement 330 may be coupled to the inner side of the one surface (ie, the direction toward the space portion 315).

In the illustrated embodiment, the second Halbach arrangement 330 is disposed inside the fourth face 314 and adjacent to the fourth face 314 . Although not shown, the second Halbach arrangement 330 may be disposed inside the third surface 313 and adjacent to the third surface 313 .

The second Halbach arrangement 330 is disposed to face the first Halbach arrangement 320 . In the illustrated embodiment, the second Halbach arrangement 330 is disposed to face the first Halbach arrangement 320 positioned inside the third surface 313 .

The second Halbach arrangement 330 is positioned to be biased toward the other of the first surface 311 and the second surface 312 . In the embodiment shown in FIGS. 15 and 17 , the second Halbach arrangement 330 is positioned to be biased toward the first surface 311 . In the embodiment shown in FIGS. 16 and 18 , the second Halbach arrangement 330 is located biased to the second face 312 .

Between the second Halbach arrangement 330 and the first Halbach arrangement 320 , the space 315 and the fixed contact 22 and the movable contact 43 accommodated in the space 315 are positioned.

The second Halbach arrangement 330 may enhance the strength of the magnetic field formed by itself, the magnetic field formed with the first Halbach arrangement 320 and each magnet unit 340 , 350 , 360 , 370 . Since the direction of the magnetic field formed by the second Halbach arrangement 330 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the second Halbach arrangement 330 includes a first block 331 and a second block 332 . It will be understood that a plurality of magnetic materials constituting the second Halbach array 330 are respectively named blocks 331 and 332 .

The first and second blocks 331 and 332 may be formed of a magnetic material. In an embodiment, the first and second blocks 331 and 332 may be provided with permanent magnets or electromagnets.

The first and second blocks 331 and 332 may be arranged side by side in one direction. In the illustrated embodiment, the first and second blocks 331 and 332 are arranged in parallel in the direction in which the fourth surface 314 extends, that is, in the front-rear direction.

15 and 17 , the first block 331 is disposed at the central portion, and the second block 332 is disposed on the rear side of the first block 321 .

16 and 18 , the first block 331 is disposed at the central portion, and the second block 332 is disposed on the front side of the first block 331 .

In an embodiment, the first block 331 and the second block 332 may contact each other.

The second block 332 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the third surface 313 , in the left and right directions in the illustrated embodiment. Also, the second block 332 may be disposed to overlap the first block 321 of the first Halbach arrangement 320 in the left and right directions.

Each block 331 , 332 includes a plurality of faces.

Specifically, the first block 331 is the space 315 or the first inner surface 331a facing the first Halbach arrangement 320 and the space 315 or the first Halbach arrangement 320 opposite to the and a first outer surface 331b.

The second block 332 includes a second inner surface 332a facing the second block 332 and a second outer surface 332b opposite the second block 332 .

The plurality of surfaces of each block 331 and 332 may be magnetized according to a predetermined rule to form a Halbach arrangement.

15 and 16 , the first and second inner surfaces 331a and 332a are magnetized with the same polarity. In this case, the first and second inner surfaces 331a and 332a may be magnetized to have the same polarity as that of each of the outer surfaces 321b and 322b of the first Halbach array 320 .

Furthermore, the first and second inner surfaces 331a and 332a may be magnetized with the same polarity as the respective opposite surfaces 341 , 351 , 361 and 371 of the respective magnet parts 340 , 350 , 360 and 370 .

In addition, the first to second outer surfaces 331b and 332b are magnetized to have a polarity different from the polarity. In this case, the first to second outer surfaces 331b and 332b may be magnetized to have the same polarity as the respective inner surfaces 321a and 322a of the first Halbach array 320 .

Furthermore, the first to second outer surfaces 331b and 332b may be magnetized with the same polarity as the opposite surfaces 342 , 352 , 362 and 372 of each of the magnet parts 340 , 350 , 360 and 370 .

17 and 18 , the first and second inner surfaces 331a and 332a are magnetized with the same polarity. In this case, the first and second inner surfaces 331a and 332a may be magnetized to have the same polarity as the respective inner surfaces 321a and 322a of the first Halbach array 320 .

Furthermore, the first and second inner surfaces 331a and 332a may be magnetized with the same polarity as the respective opposite surfaces 342 , 352 , 362 and 372 of the respective magnet parts 340 , 350 , 360 and 370 .

In addition, the first to second outer surfaces 331b and 332b are magnetized to have a polarity different from the polarity. In this case, the first to second outer surfaces 331b and 332b may be magnetized to have the same polarity as the respective outer surfaces 321b and 322b of the first Halbach array 320 .

Furthermore, the first to second outer surfaces 331b and 332b may be magnetized with the same polarity as the respective opposite surfaces 341 , 351 , 361 and 371 of the respective magnet parts 340 , 350 , 360 and 370 .

The first to fourth magnet parts (340, 350, 360, 370) are magnetic fields together with themselves, the first and second Halbach arrays (320, 330) and different magnet parts (340, 350, 360, 370). to form The arc path A.P may be formed in the arc chamber 21 by the magnetic field formed by the first to fourth magnet parts 340 , 350 , 360 , 370 .

The first to fourth magnet parts 340 , 350 , 360 , 370 may be provided in any shape capable of forming a magnetic field by being magnetized. In an embodiment, the first to fourth magnet units 340 , 350 , 360 , 370 may be provided as permanent magnets or electromagnets.

The first to fourth magnet parts 340 , 350 , 360 , and 370 may be positioned adjacent to the first to fourth surfaces 311 , 312 , 313 , and 314 , respectively.

In the illustrated embodiment, the first magnet part 340 and the second magnet part 350 are positioned adjacent to the first surface 311 . The first magnet part 340 is positioned to be biased toward the third surface 313 . The second magnet part 350 is positioned to be biased toward the fourth surface 314 .

The first magnet part 340 and the second magnet part 350 are disposed to face the third magnet part 360 and the fourth magnet part 370 , respectively, with the space part 315 interposed therebetween.

In an embodiment, the first magnet unit 340 may overlap the first fixed contactor 22a and the third magnet unit 360 in the front-rear direction. In addition, the second magnet part 350 may overlap the second fixed contactor 22b and the fourth magnet part 370 in the front-rear direction.

The first magnet part 340 and the second magnet part 350 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the first magnet part 340 and the second magnet part 350 may contact each other.

In the illustrated embodiment, the third magnet portion 360 and the fourth magnet portion 370 are positioned adjacent to the second surface 312 . The third magnet portion 360 is positioned to be biased toward the third surface 313 . The fourth magnet portion 370 is positioned to be biased toward the fourth surface 314 .

The third magnet part 360 and the fourth magnet part 370 are disposed to face the first magnet part 340 and the second magnet part 350 , respectively, with the space part 315 interposed therebetween.

In an embodiment, the third magnet part 360 may overlap the first fixed contactor 22a and the first magnet part 340 in the front-rear direction. In addition, the fourth magnet part 370 may overlap the second fixed contactor 22b and the second magnet part 350 in the front-rear direction.

The third magnet part 360 and the fourth magnet part 370 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the third magnet part 360 and the fourth magnet part 370 may be in contact with each other.

The first to fourth magnet parts 340 , 350 , 360 , 370 are formed to extend in one direction. In the illustrated embodiment, the first to fourth magnet parts 340 , 350 , 360 , 370 are formed to extend in the left and right directions.

The first to fourth magnet parts 340 , 350 , 360 , 370 each include a plurality of surfaces.

Specifically, the first magnet unit 340 includes a first facing surface 341 facing the second magnet unit 350 and a first facing surface 342 facing the second magnet unit 350 .

The second magnet unit 350 includes a second opposing surface 351 facing the first magnet unit 340 and a second opposing surface 352 facing the first magnet unit 340 .

The third magnet unit 360 includes a third opposing surface 361 facing the fourth magnet unit 370 and a third opposing surface 362 facing the fourth magnet unit 370 .

The fourth magnet unit 370 includes a fourth opposing surface 371 facing the third magnet unit 360 and a fourth opposing surface 372 facing the third magnet unit 360 .

Each surface of the first to fourth magnet units 340 , 350 , 360 , 370 may be magnetized according to a predetermined rule.

15 and 16 , the first to fourth opposing surfaces 341 , 351 , 361 , and 371 are magnetized with the same polarity. In this case, the first to fourth opposing surfaces 341 , 351 , 361 , 371 are the first and second outer surfaces 321b and 322b of the first Halbach arrangement 320 and the second of the second Halbach arrangement 330 . The first and second inner surfaces 331a and 332a are magnetized with the same polarity.

Similarly, the first to fourth opposite surfaces 342 , 352 , 362 , 372 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 342 , 352 , 362 , 372 are the first and second inner surfaces 321a and 322a of the first Halbach arrangement 320 and the second Halbach arrangement 330 . The first and second outer surfaces 331b and 332b are magnetized to the same polarity.

17 and 18 , the first to fourth opposing surfaces 341 , 351 , 361 , and 371 are magnetized with the same polarity. In this case, the first to fourth opposing surfaces 341 , 351 , 361 , 371 are the first and second outer surfaces 321b and 322b of the first Halbach arrangement 320 and the second of the second Halbach arrangement 330 . The first and second outer surfaces 331b and 332b are magnetized to the same polarity.

Similarly, the first to fourth opposite surfaces 342 , 352 , 362 , 372 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 342 , 352 , 362 , 372 are the first and second inner surfaces 321a and 322a of the first Halbach arrangement 320 and the second Halbach arrangement 330 . The first to third inner surfaces 331a, 332a, and 333b are magnetized with the same polarity.

Hereinafter, the arc path A.P formed by the arc path forming unit 300 according to the present embodiment will be described in detail with reference to FIGS. 19 and 20 .

Referring to FIG. 19 , each inner surface 321a and 322a of the first Halbach arrangement 320 and each inner surface 331a and 332a of the second Halbach arrangement 330 are magnetized with different polarities.

That is, each inner surface 321a, 322a of the first Halbach arrangement 320 is magnetized to an N pole, and each inner surface 331a, 332a of the second Halbach arrangement 330 is magnetized to an S pole.

At this time, each of the opposite surfaces 341 , 351 , 361 , 371 of each magnet part 340 , 350 , 360 , 370 has a polarity different from that of each inner surface 321a and 322a of the first Halbach arrangement 320 , that is, S polarized

Accordingly, between the first block 321 of the first Halbach arrangement 320 and the first block 331 of the second Halbach arrangement 330, the first inner surface 321a to the first inner surface 331b A magnetic field is formed in the direction of

Referring to FIG. 20 , each inner surface 321a and 322a of the first Halbach arrangement 320 and each inner surface 331a and 332a of the second Halbach arrangement 330 are magnetized with the same polarity.

That is, each of the inner surfaces 321a and 322a of the first Halbach arrangement 320 and the inner surfaces 331a and 332a of the second Halbach arrangement 330 are both magnetized to the N pole.

At this time, each of the opposite surfaces 341 , 351 , 361 , 371 of each magnet part 340 , 350 , 360 , 370 has a polarity different from that of each inner surface 321a and 322a of the first Halbach arrangement 320 , that is, S polarized

Accordingly, between the first block 321 of the first Halbach arrangement 320 and the first block 331 of the second Halbach arrangement 330 , a magnetic field in a direction to repel each other is formed.

In addition, between the first Halbach array 320 and each magnet portion (340, 350, 360, 370), the magnetic field in the direction from the first inner surface (321a) toward each of the opposite surfaces (341, 351, 361, 371) this is formed

Similarly, between the second Halbach arrangement 330 and each of the magnet portions 340, 350, 360, 370, the direction from the first inner surface 331a toward each of the opposite surfaces 341, 351, 361, 371 A magnetic field is formed.

In this case, the strength of the magnetic field formed between the first Halbach arrangement 320 and the second Halbach arrangement 330 may be strengthened by the magnetic field formed by the second block 322 .

In the embodiment shown in FIGS. 19A and 20A , the direction of the current is the direction from the second fixed contact 22b through the movable contact 43 to the first fixed contact 22a. .

In the embodiment shown in FIG. 19 (a), if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

In the embodiment shown in (a) of FIG. 20 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in FIGS. 19 ( b ) and 20 ( b ), the direction of the current is the direction from the first fixed contact 22a to the movable contact 43 through the second fixed contactor 22b. .

In the embodiment shown in (b) of FIG. 19 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in (b) of FIG. 20 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

Although not shown, when the polarity of each surface of the first and second Halbach arrays 320 and 330 and the first to fourth magnet parts 340, 350, 360, 370 is changed, the first and second The directions of the magnetic fields formed in the Halbach arrays 320 and 330 and the first to fourth magnet units 340 , 350 , 360 and 370 are opposite to each other. Accordingly, the path A.P of the generated electromagnetic force and arc is also formed in the reverse direction.

That is, in the energized situation as shown in (a) of FIG. 19 , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contactor 22a is formed toward the front left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

In a energized situation as shown in FIG. 20A , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

Similarly, in the energized situation as shown in FIG. 19B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

In a energized situation as shown in FIG. 20B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

Accordingly, the arc path forming unit 300 according to the present embodiment is a polarity or direct current of the first and second Halbach arrays 320 and 330 and the first to fourth magnet units 340 , 350 , 360 , 370 . Regardless of the direction of the current passed through the relay 1, the path A.P of the electromagnetic force and the arc may be formed in a direction away from the center C.

Accordingly, damage to each component of the DC relay 1 disposed adjacent to the central portion C can be prevented. Furthermore, the generated arc can be quickly discharged to the outside, so that the operation reliability of the DC relay 1 can be improved.

(4) Description of the arc path forming unit 400 according to another embodiment of the present invention

Hereinafter, the arc path forming unit 400 according to another embodiment of the present invention will be described in detail with reference to FIGS. 21 to 30 .

21 to 28 , the arc path forming unit 400 according to the illustrated embodiment includes a magnet frame 410 , a Halbach arrangement 420 , and first to fifth magnet units 430 , 440 , 450 , 460, 470).

The magnet frame 410 according to the present embodiment has the same structure and function as the magnet frame 110 according to the above-described embodiment. However, there is a difference in the arrangement method of the Halbach arrangement 420 and the first to fifth magnet parts 430 , 440 , 450 , 460 , 470 disposed on the magnet frame 410 according to the present embodiment.

Accordingly, the description of the magnet frame 410 will be replaced with the description of the magnet frame 110 according to the above-described embodiment.

In the illustrated embodiment, a plurality of magnetic materials constituting the Halbach array 420 are sequentially arranged in parallel from the front side to the rear side. That is, the Halbach arrangement 420 is formed to extend in the front-rear direction.

The Halbach array 420 may form a magnetic field with other magnetic materials. In the illustrated embodiment, the Halbach array 420 may form a magnetic field together with the first to fifth magnet parts 430 , 440 , 450 , 460 , and 470 .

The Halbach arrangement 420 may be positioned adjacent to any one of the third and fourth surfaces 413 and 414 . In one embodiment, the Halbach arrangement 420 may be coupled to the inner side (ie, the direction toward the space portion 415) of any one of the surfaces.

In the embodiment shown in FIGS. 21 , 22 , 25 and 26 , the Halbach arrangement 420 is disposed inside the third face 413 and adjacent to the third face 413 . 23 , 24 , 27 and 28 , the Halbach arrangement 420 may be disposed inside the fourth face 414 and adjacent to the fourth face 414 .

The Halbach arrangement 420 is disposed to face the fifth magnet unit 470 . 21 , 22 , 25 and 26 , the Halbach arrangement 420 is disposed to face the fifth magnet portion 470 located inside the fourth surface 414 . 23 , 24 , 27 and 28 , the Halbach arrangement 420 is disposed to face the fifth magnet portion 470 located inside the third surface 413 .

The first Halbach arrangement 420 is positioned to be biased toward any one of the third face 413 and the fourth face 414 . In the embodiment shown in FIGS. 21 , 22 , 25 and 26 , the first Halbach arrangement 420 is located biased to the third surface 413 . 23 , 24 , 27 and 28 , the first Halbach arrangement 420 is located biased to the fourth face 414 .

Between the Halbach arrangement 420 and the fifth magnet part 470 , the space 415 and the fixed contact 22 and the movable contact 43 accommodated in the space 415 are positioned.

The Halbach arrangement 420 may enhance the strength of the magnetic field formed by itself and the magnetic field formed with the first to fifth magnet parts 430 , 440 , 450 , 460 , 470 . Since the direction of the magnetic field formed by the Halbach array 420 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the Halbach arrangement 420 includes a first block 421 and a second block 422 . It will be understood that a plurality of magnetic materials constituting the Halbach array 420 are named blocks 421 and 422 , respectively.

The first and second blocks 421 and 422 may be formed of a magnetic material. In an embodiment, the first and second blocks 421 and 422 may be provided with permanent magnets or electromagnets.

The first and second blocks 421 and 422 may be arranged side by side in one direction. In the illustrated embodiment, the first and second blocks 421 and 422 are arranged in parallel in the direction in which the third surface 413 or the fourth surface 414 extends, that is, in the front-rear direction.

21 , 23 , 25 and 27 , the first block 421 is disposed on the central portion, and the second block 422 is disposed on the front side of the first block 421 . .

22 , 24 , 26 and 28 , the first block 421 is disposed on the central portion, and the second block 422 is disposed on the rear side of the first block 421 . .

In an embodiment, the first block 421 and the second block 422 may contact each other.

The first block 421 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the fifth magnet unit 470, and in the left and right directions in the illustrated embodiment. Also, the first block 421 may be disposed to overlap the fifth magnet part 470 in the left and right directions.

Each block 421 , 422 includes a plurality of faces.

Specifically, the first block 421 includes a first inner surface 421a facing the space 415 or the fifth magnet 470 and a first opposite to the space 415 or the fifth magnet 470 . and an outer surface 421b.

The second block 422 includes a second inner surface 422a facing the first block 421 and a second outer surface 422b facing the first block 421 .

The plurality of surfaces of each of the blocks 421 and 422 may be magnetized according to a predetermined rule to form a Halbach arrangement.

21 to 24 , the first and second inner surfaces 421a and 422a are magnetized with the same polarity. At this time, the first and second inner surfaces 421a and 422a are the polarities of the opposite surfaces 432, 442, 452, 462, 472 of the first to fifth magnet parts 430, 440, 450, 460, and 470, respectively. can be magnetized in the same way.

In addition, the first and second outer surfaces 421b and 422b are magnetized to have a polarity different from the polarity. At this time, the first and second outer surfaces 421b and 422b are the polarities of the opposite surfaces 431, 441, 451, 461, 471 of the first to fifth magnet parts 430, 440, 450, 460, and 470, respectively. can be magnetized in the same way.

25 to 28 , the first and second inner surfaces 421a and 422a are magnetized with the same polarity. In this case, the first and second inner surfaces 421a and 422a may be magnetized with the same polarity as the fifth opposite surface 471 of the fifth magnet part 470 .

Furthermore, the first and second inner surfaces 421a and 422a may be magnetized to have the same polarity as the polarities of the respective opposite surfaces 432 , 442 , 452 , 462 of the first to fourth magnet parts 430 , 440 , 450 , 460 . can

In addition, the first and second outer surfaces 421b and 422b are magnetized to have a polarity different from the polarity. In this case, the first and second outer surfaces 421b and 422b may be magnetized with the same polarity as the fifth opposite surface 472 of the fifth magnet unit 470 .

Further, the first and second outer surfaces 421b and 422b may be magnetized to have the same polarity as the polarity of each of the opposite surfaces 431 , 441 , 451 , 461 of the first to fourth magnet parts 430 , 440 , 450 , 460 . can

The first to fifth magnet parts 430 , 440 , 450 , 460 , 470 form a magnetic field together with themselves, the Halbach arrangement 420 and the different magnet parts 430 , 440 , 450 , 460 , 470 . . The arc path A.P may be formed in the arc chamber 21 by the magnetic field formed by the first to fifth magnet parts 430 , 440 , 450 , 460 , and 470 .

The first to fifth magnet parts 430 , 440 , 450 , 460 , and 470 may be provided in any shape capable of forming a magnetic field by being magnetized. In an embodiment, the first to fifth magnet units 430 , 440 , 450 , 460 , and 470 may be provided as permanent magnets or electromagnets.

The first to fifth magnet parts 430 , 440 , 450 , 460 , and 470 may be positioned adjacent to the first to fourth surfaces 411 , 412 , 413 , and 414 , respectively.

In the illustrated embodiment, the first magnet part 430 and the second magnet part 440 are positioned adjacent to the first surface 411 . The first magnet part 430 is positioned to be biased toward the third surface 413 . The second magnet portion 440 is positioned to be biased toward the fourth surface 414 .

The first magnet part 430 and the second magnet part 440 are disposed to face the third magnet part 450 and the fourth magnet part 460 with the space part 415 therebetween, respectively.

In an embodiment, the first magnet part 430 may overlap the first fixed contactor 22a and the third magnet part 450 in the front-rear direction. In addition, the second magnet part 440 may overlap the second fixed contactor 22b and the fourth magnet part 460 in the front-rear direction.

The first magnet part 430 and the second magnet part 440 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the first magnet part 430 and the second magnet part 440 may be in contact with each other.

In the illustrated embodiment, the third magnet portion 450 and the fourth magnet portion 460 are positioned adjacent to the second surface 412 . The third magnet part 450 is positioned to be biased toward the third surface 413 . The fourth magnet portion 460 is positioned to be biased toward the fourth surface 414 .

The third magnet part 450 and the fourth magnet part 460 are disposed to face the first magnet part 430 and the second magnet part 440 with the space part 415 therebetween, respectively.

In an embodiment, the third magnet part 450 may overlap the first fixed contactor 22a and the first magnet part 430 in the front-rear direction. Also, the fourth magnet part 460 may overlap the second fixed contactor 22b and the second magnet part 440 in the front-rear direction.

The third magnet part 450 and the fourth magnet part 460 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the third magnet part 450 and the fourth magnet part 460 may be in contact with each other.

The fifth magnet unit 470 is disposed to face the Halbach arrangement 420 . 21 , 22 , 25 and 26 , the fifth magnet part 470 is disposed on the inside of the fourth surface 414 , and is located on the inside of the third surface 413 . It is arranged to face the Bach arrangement 420 .

23 , 24 , 27 and 28 , the fifth magnet part 470 is disposed on the inside of the third surface 413 , and is located on the inside of the fourth surface 414 . It is arranged to face the Bach arrangement 420 .

Between the fifth magnet part 470 and the Halbach arrangement 420 , the space 415 and the fixed contact 22 and the movable contact 43 accommodated in the space 415 are positioned.

The first to fourth magnet parts 430 , 440 , 450 , and 460 are formed to extend in one direction. In the illustrated embodiment, the first to fourth magnet parts 430 , 440 , 450 , and 460 are formed to extend in the left and right directions.

The fifth magnet part 470 is formed to extend in a different direction. In the illustrated embodiment, the fifth magnet unit 470 is formed to extend in the front-rear direction.

The first to fifth magnet parts 430 , 440 , 450 , 460 , and 470 each include a plurality of surfaces.

Specifically, the first magnet unit 430 includes a first facing surface 431 facing the second magnet unit 440 and a first facing surface 432 facing the second magnet unit 440 .

The second magnet portion 440 includes a second opposite surface 441 facing the first magnet portion 430 and a second opposite surface 442 opposite to the first magnet portion 430 .

The third magnet unit 450 includes a third opposing surface 451 facing the fourth magnet unit 460 and a third opposing surface 452 facing the fourth magnet unit 460 .

The fourth magnet unit 460 includes a fourth opposing surface 461 facing the third magnet unit 450 and a fourth opposing surface 462 facing the third magnet unit 450 .

The fifth magnet part 470 has a fifth opposing surface 471 facing the Halbach arrangement 420 or space 415 and a fifth opposing surface 471 facing the Halbach arrangement 420 or space 415 ( 472).

Each surface of the first to fifth magnet parts 430 , 440 , 450 , 460 , and 470 may be magnetized according to a predetermined rule.

21 to 24 , the first to fifth opposing surfaces 431 , 441 , 451 , 461 , and 471 are magnetized with the same polarity. At this time, the first to fifth opposing surfaces 431 , 441 , 451 , 461 , and 471 are magnetized with the same polarity as the first and second outer surfaces 421b and 422b of the Halbach arrangement 420 .

Similarly, the first to fifth opposing surfaces 432 , 442 , 452 , 462 , 472 are magnetized with a polarity different from the polarity. At this time, the first to fifth opposite surfaces 432 , 442 , 452 , 462 , 472 are magnetized with the same polarity as the first and second inner surfaces 421a and 422a of the Halbach arrangement 420 .

25 to 28 , the first to fourth opposing surfaces 431 , 441 , 451 , and 461 are magnetized with the same polarity. In addition, the fifth opposing surface 471 is magnetized with a polarity different from that of the first to fourth opposing surfaces 431 , 441 , 451 , and 461 .

At this time, the first to fourth opposing surfaces 431 , 441 , 451 , and 461 are magnetized with the same polarity as the first and second outer surfaces 421b and 422b of the Halbach arrangement 420 . In addition, the fifth opposing surface 471 is magnetized with the same polarity as the first and second inner surfaces 421a and 422a.

Likewise, the first to fourth opposing surfaces 432 , 442 , 452 , and 462 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 432. 442, 452, and 462 are magnetized with the same polarity as the first and second inner surfaces 421a and 422a and the fifth opposite surface 471 of the Halbach arrangement 420. do.

Hereinafter, the arc path A.P formed by the arc path forming unit 400 according to the present embodiment will be described in detail with reference to FIGS. 29 and 30 .

Referring to FIG. 29 , each of the inner surfaces 421a and 422a of the Halbach arrangement 420 and the opposite surfaces 431 , 441 , 451 of the first to fifth magnet parts 430 , 440 , 450 , 460 , 470 , 461 and 471) are magnetized with different polarities.

That is, each inner surface 421a, 422a of the Halbach arrangement 420 is an N pole, and each of the opposite surfaces 431, 441, 451, of the first to fifth magnet parts 430, 440, 450, 460, 470 is an N pole. 461 and 471) are magnetized to the S pole.

Accordingly, between the Halbach arrangement 420 and the first to fifth magnet parts 430, 440, 450, 460, 470, each of the opposing surfaces 431, 441, 451, 461 on the second inner surface 422a, 471), a magnetic field is formed. In particular, a magnetic field in a direction from the second inner surface 422a toward the fifth opposing surface 471 is predominantly formed.

Referring to FIG. 30 , each inner surface 421a and 422a of the Halbach arrangement 420 and the fifth opposite surface 471 of the fifth magnet part 470 are magnetized with the same polarity. In addition, the first to fourth opposing surfaces 431 , 441 , 451 , and 461 of the first to fourth magnet parts 430 , 440 , 450 and 460 are magnetized with different polarities.

That is, each of the inner surfaces 421a and 422a and the fifth opposing face 471 of the Halbach arrangement 420 is magnetized to the N pole, and the first to fourth opposing faces 431 , 441 , 451 , 461 are magnetized to the S pole. do.

Accordingly, a magnetic field is formed between the Halbach array 420 and the fifth magnet unit 470 in a direction to repel each other. In addition, between the Halbach arrangement 420 and the first to fourth magnet parts 430 , 440 , 450 , 460 , the first to fourth opposing surfaces 431 , 441 , 451 , 461 on the second inner surface 422a ), a magnetic field is formed.

Further, between the fifth magnet part 470 and the first to fourth magnet parts 430, 440, 450, 460, the first to fourth opposing surfaces 431 and 441 in the fifth opposing face 471, A magnetic field in a direction toward 451 and 461 is formed.

At this time, the magnetic field formed between the Halbach array 420 and the first to fifth magnet parts 430 , 440 , 450 , 460 , 470 by the magnetic field formed by the first and third blocks 421 and 423 . strength can be strengthened.

29 (a) and 30 (a), the direction of the current is a direction from the second fixed contact (42b) to the movable contact (43) through the first fixed contact (42a) .

In the embodiment shown in (a) of FIG. 29 , if Fleming's left hand rule is applied to the first fixed contactor 42a, the electromagnetic force generated in the vicinity of the first fixed contactor 42a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 42a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 42b, the electromagnetic force generated in the vicinity of the second fixed contactor 42b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contact 42b is also formed toward the front right.

In the embodiment shown in (a) of FIG. 30 , if Fleming's left hand rule is applied to the first fixed contactor 42a, the electromagnetic force generated near the first fixed contactor 42a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 42a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 42b, the electromagnetic force generated in the vicinity of the second fixed contactor 42b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 42b is also formed toward the rear right side.

In the embodiment shown in FIGS. 29 ( b ) and 30 ( b ), the direction of the current is the direction from the first fixed contact 42a through the movable contact 43 to the second fixed contact 42b. .

In the embodiment shown in FIG. 29(b), if Fleming's left hand rule is applied to the first fixed contactor 42a, the electromagnetic force generated in the vicinity of the first fixed contactor 42a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 42a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 42b, the electromagnetic force generated in the vicinity of the second fixed contactor 42b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 42b is also formed toward the rear right side.

In the embodiment shown in FIG. 30 (b), if Fleming's left hand rule is applied to the first fixed contactor 42a, the electromagnetic force generated near the first fixed contactor 42a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 42a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 42b, the electromagnetic force generated in the vicinity of the second fixed contactor 42b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contact 42b is also formed toward the front right.

Although not shown, when the polarity of each side of the Halbach arrangement 420 and the first to fifth magnet parts 430, 440, 450, 460, 470 is changed, the Halbach arrangement 420 and the first to The directions of the magnetic fields formed in the fifth magnet units 430 , 440 , 450 , 460 , and 470 are reversed. Accordingly, the path A.P of the generated electromagnetic force and arc is also formed in the reverse direction.

That is, in the energized situation as shown in (a) of FIG. 29 , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 42a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 42b is formed toward the rear right side.

In an energized situation as shown in FIG. 30A , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 42a is formed toward the front left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 42b is formed toward the front right.

Similarly, in a energized situation as shown in FIG. 29B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 42a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 42b is formed toward the front right.

In a energized state as shown in FIG. 30B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 42a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 42b is formed toward the rear right side.

Accordingly, the arc path forming unit 400 according to the present embodiment is to the polarity or DC relay 1 of the Halbach array 420 and the first to fifth magnet units 430 , 440 , 450 , 460 , 470 . Irrespective of the direction of the current to be passed, the path A.P of the electromagnetic force and arc may be formed in a direction away from the center C.

Accordingly, damage to each component of the DC relay 1 disposed adjacent to the central portion C can be prevented. Furthermore, the generated arc can be quickly discharged to the outside, so that the operation reliability of the DC relay 1 can be improved.

(5) Description of the arc path forming unit 500 according to another embodiment of the present invention

Hereinafter, an arc path forming unit 500 according to another embodiment of the present invention will be described in detail with reference to FIGS. 31 to 40 .

31 to 38 , the arc path forming unit 500 according to the illustrated embodiment is a magnet frame 210 , first and second Halbach arrays 520 and 530 , and first to fourth magnet units. (540, 550, 560, 570).

The magnet frame 510 according to this embodiment has the same structure and function as the magnet frame 110 according to the above-described embodiment. However, there is a difference in the arrangement method of the first and second Halbach arrays 520 and 530 and the first to fourth magnet parts 540 , 550 , 560 and 570 disposed on the magnet frame 510 according to the present embodiment. there is

Accordingly, the description of the magnet frame 510 will be replaced with the description of the magnet frame 110 according to the above-described embodiment.

In the illustrated embodiment, a plurality of magnetic materials constituting the first Halbach array 520 are sequentially arranged in parallel from the front side to the rear side. That is, the first Halbach arrangement 520 is formed to extend in the front-rear direction.

The first Halbach array 520 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the first Halbach array 520 may form a magnetic field together with the second Halbach array 530 and the first to fourth magnet parts 540 , 550 , 560 , 570 .

The first Halbach arrangement 520 may be positioned adjacent to any one of the third and fourth surfaces 513 and 514 . In an embodiment, the first Halbach arrangement 520 may be coupled to the inner side of the one surface (ie, the direction toward the space portion 515 ).

31 , 32 , 35 and 36 , the first Halbach arrangement 520 is disposed inside the third face 513 and adjacent to the third face 513 . 33 , 34 , 37 and 38 , the first Halbach arrangement 520 may be disposed inside the fourth face 514 and adjacent to the fourth face 514 . .

The first Halbach arrangement 520 is disposed to face the second Halbach arrangement 530 . 31 , 32 , 35 and 36 , the first Halbach arrangement 520 is disposed to face the second Halbach arrangement 530 located inside the fourth surface 514 . do. 33 , 34 , 37 and 38 , the first Halbach arrangement 520 is disposed to face the second Halbach arrangement 530 located inside the third surface 513 . do.

The first Halbach arrangement 520 is positioned to be biased toward any one of the third surface 513 and the fourth surface 514 . In the embodiment shown in FIGS. 31 , 32 , 35 and 36 , the first Halbach arrangement 520 is located biased to the third surface 513 . In the embodiment shown in FIGS. 33 , 34 , 37 and 38 , the first Halbach arrangement 520 is located biased to the fourth face 514 .

Between the first Halbach arrangement 520 and the second Halbach arrangement 530 , the space portion 515 and the fixed contactor 22 and the movable contactor 43 accommodated in the space portion 515 are positioned.

The first Halbach array 520 can strengthen the magnetic field it forms, the second Halbach array 530, and the strength of the magnetic field formed with the first to fourth magnet parts 540, 550, 560, 570. have. Since the direction of the magnetic field formed by the first Halbach array 520 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the first Halbach arrangement 520 includes a first block 521 and a second block 522 . It will be understood that a plurality of magnetic materials constituting the first Halbach array 520 are designated as blocks 521 and 522, respectively.

The first and second blocks 521 and 522 may be formed of a magnetic material. In an embodiment, the first and second blocks 521 and 522 may be provided with permanent magnets or electromagnets.

The first and second blocks 521 and 522 may be arranged side by side in one direction. In the illustrated embodiment, the first and second blocks 521 and 522 are arranged in parallel in the direction in which the third surface 513 or the fourth surface 514 extends, that is, in the front-rear direction.

31 , 33 , 35 and 37 , the first block 521 is disposed on the central portion, and the second block 522 is disposed on the front side of the first block 521 . . 32 , 34 , 36 and 38 , the first block 521 is disposed on the central portion, and the second block 522 is disposed on the rear side of the first block 521 . .

In an embodiment, the first block 521 and the second block 522 may contact each other.

The first block 521 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the second Halbach arrangement 530 , in the left and right directions in the illustrated embodiment. Also, the first block 521 may be disposed to overlap the second block 532 of the second Halbach arrangement 530 in the left and right directions.

Each block 521 , 522 includes a plurality of faces.

Specifically, the first block 521 is the space portion 515 or the first inner surface 521a facing the second Halbach arrangement 530 and the space portion 515 or the second Halbach arrangement 530 opposite to the other side. and a first outer surface 521b.

The second block 522 includes a second inner surface 522a facing the first block 521 and a second outer surface 522b opposite the first block 521 .

The plurality of surfaces of each block 521 and 522 may be magnetized according to a predetermined rule to form a Halbach arrangement.

31 to 34 , the first and second inner surfaces 521a and 522a are magnetized with the same polarity. In this case, the first and second inner surfaces 521a and 522a may be magnetized to have the same polarity as the respective outer surfaces 531b, 532b, and 533b of the second Halbach arrangement 530 .

Furthermore, the first and second inner surfaces 521a and 522a may be magnetized with the same polarity as the respective opposite surfaces 542 , 552 , 562 and 572 of the respective magnet parts 540 , 550 , 560 , and 570 .

In addition, the first and second outer surfaces 521b and 522b are magnetized with a polarity different from the polarity. In this case, the first and second outer surfaces 521b and 522b may be magnetized to have the same polarity as the respective inner surfaces 531a, 532a, and 533a of the second Halbach arrangement 530 .

Further, the first and second outer surfaces 521b and 522b may be magnetized with the same polarity as the respective opposite surfaces 541, 551, 561, and 571 of the respective magnet portions 540, 550, 560, and 570.

35 to 38 , the first and second inner surfaces 521a and 522a are magnetized with the same polarity. In this case, the first and second inner surfaces 521a and 522a may be magnetized to have the same polarity as the respective inner surfaces 531a, 532a, and 533a of the second Halbach array 530 .

Furthermore, the first and second inner surfaces 521a and 522a may be magnetized with the same polarity as the respective opposite surfaces 542 , 552 , 562 and 572 of the respective magnet parts 540 , 550 , 560 , and 570 .

In addition, the first and second outer surfaces 521b and 522b are magnetized with a polarity different from the polarity. In this case, the first and second outer surfaces 521b and 522b may be magnetized to have the same polarity as the respective outer surfaces 531b , 532b and 533b of the second Halbach arrangement 530 .

Further, the first and second outer surfaces 521b and 522b may be magnetized with the same polarity as the respective opposite surfaces 541, 551, 561, and 571 of the respective magnet portions 540, 550, 560, and 570.

In the illustrated embodiment, a plurality of magnetic materials constituting the second Halbach array 530 are sequentially arranged in parallel from the front side to the rear side. That is, the second Halbach arrangement 530 is formed to extend in the front-rear direction.

The second Halbach array 530 may form a magnetic field together with other magnetic materials. In the illustrated embodiment, the second Halbach arrangement 530 may form a magnetic field together with the first Halbach arrangement 520 and the first to fourth magnet parts 540 , 550 , 560 , 570 .

The second Halbach arrangement 530 may be positioned adjacent to the other of the third and fourth surfaces 513 and 514 . In an embodiment, the second Halbach arrangement 530 may be coupled to the inner side of the one surface (ie, the direction toward the space portion 515 ).

31 to 34 , the second Halbach arrangement 530 is disposed on the inside of the fourth face 514 and adjacent the fourth face 514 . 35 to 38 , the second Halbach arrangement 530 may be disposed inside the third surface 513 and adjacent to the third surface 513 .

The second Halbach arrangement 530 is disposed to face the first Halbach arrangement 520 . 31 to 34 , the second Halbach arrangement 530 is disposed to face the first Halbach arrangement 520 positioned inside the third surface 513 . 35 to 38 , the second Halbach arrangement 530 is disposed to face the first Halbach arrangement 520 located inside the fourth surface 514 .

Between the second Halbach arrangement 530 and the first Halbach arrangement 520 , the space 515 and the fixed contact 22 and the movable contact 43 accommodated in the space 515 are positioned.

The second Halbach arrangement 530 may enhance the strength of the magnetic field formed by itself, the magnetic field formed with the first Halbach arrangement 520 and each of the magnet units 540 , 550 , 560 , 570 . Since the direction of the magnetic field formed by the second Halbach arrangement 530 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

In the illustrated embodiment, the second Halbach arrangement 530 includes a first block 531 , a second block 532 , and a third block 533 . It will be understood that a plurality of magnetic materials constituting the second Halbach array 530 are named blocks 531 , 532 , and 533 , respectively.

The first to third blocks 531 , 532 , and 533 may be formed of a magnetic material. In an embodiment, the first to third blocks 531 , 532 , and 533 may be provided with permanent magnets or electromagnets.

The first to third blocks 531 , 532 , and 533 may be arranged side by side in one direction. In the illustrated embodiment, the first to third blocks 531 , 532 , and 533 are arranged in parallel in the direction in which the third surface 513 or the fourth surface 514 extends, that is, in the front-rear direction.

In the illustrated embodiment, the second block 532 of the first to third blocks 531 , 532 , and 533 is disposed on the rearmost side, and the third block 533 is disposed on the most front side. Also, the first block 531 is positioned between the second block 532 and the third block 533 .

In an embodiment, the second block 532 may contact the first and third blocks 531 and 533, respectively.

The second block 532 may be disposed to overlap each of the fixed contacts 22a and 22b in the direction toward the third surface 513 or the fourth surface 514 , and in the left and right directions in the illustrated embodiment. Also, the second block 532 may be disposed to overlap the first block 521 of the first Halbach arrangement 520 in the left and right directions.

Each block 531 , 532 , 533 includes a plurality of faces.

Specifically, the first block 531 has a space 515 or a first inner surface 531a facing the first Halbach arrangement 520 and a space 515 or a first Halbach arrangement 520 opposite to the space portion 515 or the first Halbach arrangement 520 . and a first outer surface 531b.

The second block 532 includes a second inner surface 532a facing the first block 531 and a second outer surface 532b facing the first block 531 .

In addition, the third block 533 includes a third inner surface 533a facing the first block 531 and a third outer surface 533b opposite to the first block 531 .

The plurality of surfaces of each block 531 , 532 , 533 may be magnetized according to a predetermined rule to form a Halbach arrangement.

31 to 34, the first to third inner surfaces 531a, 532a, and 533a are magnetized with the same polarity. In this case, the first to third inner surfaces 531a , 532a , and 533a may be magnetized to have the same polarity as the respective outer surfaces 521b and 522b of the first Halbach arrangement 520 .

Furthermore, the first to third inner surfaces 531a, 532a, and 533a may be magnetized with the same polarity as the respective opposite surfaces 541, 551, 561, and 571 of the respective magnet parts 540, 550, 560, and 570. .

In addition, the first to third outer surfaces 531b, 532b, and 533b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 531b, 532b, and 533b may be magnetized to have the same polarity as the polarities of the inner surfaces 531a and 532a of the first Halbach array 520 .

Further, the first to third outer surfaces 531b, 532b, and 533b may be magnetized with the same polarity as the respective opposite surfaces 542, 552, 562, 572 of the respective magnet portions 540, 550, 560, and 570. .

35 to 38, the first to third inner surfaces 531a, 532a, and 533a are magnetized with the same polarity. In this case, the first to third inner surfaces 531a , 532a , and 533a may be magnetized to have the same polarity as the respective inner surfaces 521a and 522a of the first Halbach array 520 .

Furthermore, the first to third inner surfaces 531a, 532a, and 533a may be magnetized with the same polarity as the respective opposite surfaces 542, 552, 562, 572 of the respective magnet parts 540, 550, 560, and 570. .

In addition, the first to third outer surfaces 531b, 532b, and 533b are magnetized to have a polarity different from the polarity. In this case, the first to third outer surfaces 531b, 532b, and 533b may be magnetized to have the same polarity as that of each of the outer surfaces 521b, 522b, and 523b of the first Halbach arrangement 520 .

Furthermore, the first to third outer surfaces 531b, 532b, and 533b may be magnetized with the same polarity as the respective opposite surfaces 541, 551, 561, and 571 of the respective magnet parts 540, 550, 560, and 570. .

The first to fourth magnet parts (540, 550, 560, 570) are magnetic fields together with themselves, the first and second Halbach arrays (520, 530) and different magnet parts (540, 550, 560, 570). to form The arc path A.P may be formed in the arc chamber 21 by the magnetic field formed by the first to fourth magnet units 540 , 550 , 560 , and 570 .

The first to fourth magnet parts 540 , 550 , 560 , and 570 may be provided in any shape capable of forming a magnetic field by being magnetized. In an embodiment, the first to fourth magnet parts 540 , 550 , 560 , 570 may be provided as permanent magnets or electromagnets.

The first to fourth magnet parts 540 , 550 , 560 , and 570 may be positioned adjacent to the first to fourth surfaces 511 , 512 , 513 , and 514 , respectively.

In the illustrated embodiment, the first magnet part 540 and the second magnet part 550 are positioned adjacent to the first surface 511 . The first magnet part 540 is positioned to be biased toward the third surface 513 . The second magnet part 550 is positioned to be biased toward the fourth surface 514 .

The first magnet part 540 and the second magnet part 550 are disposed to face the third magnet part 560 and the fourth magnet part 570, respectively, with the space part 515 interposed therebetween.

In an embodiment, the first magnet unit 540 may overlap the first fixed contactor 22a and the third magnet unit 560 in the front-rear direction. Also, the second magnet part 550 may overlap the second fixed contactor 22b and the fourth magnet part 570 in the front-rear direction.

The first magnet part 540 and the second magnet part 550 are arranged in parallel with each other in the extending direction thereof. In an embodiment, the first magnet part 540 and the second magnet part 550 may be in contact with each other.

In the illustrated embodiment, the third magnet portion 560 and the fourth magnet portion 570 are positioned adjacent to the second surface 512 . The third magnet portion 560 is positioned to be biased toward the third surface 513 . The fourth magnet portion 570 is positioned to be biased toward the fourth surface 514 .

The third magnet part 560 and the fourth magnet part 570 are disposed to face the first magnet part 540 and the second magnet part 550 with the space part 515 interposed therebetween.

In an embodiment, the third magnet part 560 may overlap the first fixed contactor 22a and the first magnet part 540 in the front-rear direction. In addition, the fourth magnet part 570 may overlap the second fixed contactor 22b and the second magnet part 550 in the front-rear direction.

The third magnet part 560 and the fourth magnet part 570 are arranged in parallel with each other along the extending direction thereof. In an embodiment, the third magnet part 560 and the fourth magnet part 570 may be in contact with each other.

The first to fourth magnet parts 540 , 550 , 560 , and 570 are formed to extend in one direction. In the illustrated embodiment, the first to fourth magnet parts 540 , 550 , 560 , and 570 are formed to extend in the left and right directions.

The first to fourth magnet parts 540 , 550 , 560 , and 570 each include a plurality of surfaces.

Specifically, the first magnet unit 540 includes a first opposing surface 541 facing the second magnet unit 550 and a first opposing surface 542 facing the second magnet unit 550 .

The second magnet unit 550 includes a second opposing surface 551 facing the first magnet unit 540 and a second opposing surface 552 facing the first magnet unit 540 .

The third magnet portion 560 includes a third opposite surface 561 facing the fourth magnet portion 570 and a third opposite surface 562 opposite to the fourth magnet portion 570 .

The fourth magnet unit 570 includes a fourth opposing surface 571 facing the third magnet unit 560 and a fourth opposing surface 572 facing the third magnet unit 560 .

Each surface of the first to fourth magnet units 540 , 550 , 560 , and 570 may be magnetized according to a predetermined rule.

31 to 34 , the first to fourth opposing surfaces 541 , 551 , 561 , and 571 are magnetized with the same polarity. In this case, the first to fourth opposing surfaces 541 , 551 , 561 , 571 are the first and second outer surfaces 521b and 522b of the first Halbach arrangement 520 and the second Halbach arrangement 530 . The first to third inner surfaces 531a, 532a, and 533a are magnetized with the same polarity.

The first to fourth opposite surfaces 542 , 552 , 562 , and 572 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 542 , 552 , 562 , 572 are the first and second inner surfaces 521a and 522a of the first Halbach arrangement 520 and the second Halbach arrangement 530 . The first to third outer surfaces 531b, 532b, and 533b are magnetized with the same polarity.

35 to 38 , the first to fourth opposing surfaces 541 , 551 , 561 , and 571 are magnetized with the same polarity. At this time, the first to fourth opposing surfaces 541 , 551 , 561 , 571 are the first and second outer surfaces 521b and 522b of the first Halbach arrangement 520 and the second Halbach arrangement 530 . The first to third outer surfaces 531b, 532b, and 533b are magnetized with the same polarity.

Likewise, the first to fourth opposing surfaces 542 , 552 , 562 , 572 are magnetized with a polarity different from the polarity. At this time, the first to fourth opposite surfaces 542 , 552 , 562 , 572 are the first and second inner surfaces 521a and 522a of the first Halbach arrangement 520 and the second Halbach arrangement 530 . The first to third inner surfaces 531a, 532a, and 533a are magnetized with the same polarity.

Hereinafter, the arc path A.P formed by the arc path forming unit 500 according to the present embodiment will be described in detail with reference to FIGS. 39 and 40 .

Referring to FIG. 39 , each inner surface 521a and 522a of the first Halbach arrangement 520 and each inner surface 531a , 532a and 533a of the second Halbach arrangement 530 are magnetized with different polarities.

That is, each inner surface 521a, 522a of the first Halbach arrangement 520 is magnetized to an N pole, and each inner surface 531a, 532a, 533a of the second Halbach arrangement 530 is magnetized to an S pole.

At this time, each of the opposite surfaces 541 , 551 , 561 , 571 of each magnet part 540 , 550 , 560 , 570 has a polarity different from that of each inner surface 521a , 522a of the first Halbach arrangement 520 , that is, S polarized

Accordingly, between the second block 522 of the first Halbach arrangement 520 and the second block 532 of the second Halbach arrangement 530, the second inner surface 522a to the second inner surface 532b A magnetic field is formed in the direction of

Referring to FIG. 40 , each inner surface 521a and 522a of the first Halbach arrangement 520 and each inner surface 531a , 532a and 533a of the second Halbach arrangement 530 are magnetized with the same polarity.

That is, each of the inner surfaces 521a and 522a of the first Halbach arrangement 520 and the inner surfaces 531a, 532a, 533a of the second Halbach arrangement 530 are all magnetized to the N pole.

At this time, each of the opposite surfaces 541, 551, 561, 571 of each magnet portion 540, 550, 560, 570 has a polarity different from that of each inner surface 521a, 522a, 523a of the first Halbach arrangement 520, That is, it is magnetized to the S pole.

Accordingly, between the second block 522 of the first Halbach arrangement 520 and the second block 532 of the second Halbach arrangement 530 , a magnetic field in a direction to repel each other is formed.

In addition, between the first Halbach array 520 and each magnet portion (540, 550, 560, 570), the magnetic field in the direction from the second inner surface (522a) toward each of the opposite surfaces (541, 551, 561, 571) this is formed

Similarly, between the second Halbach arrangement 530 and each magnet portion (540, 550, 560, 570), the second inner surface (532a) in the direction toward each of the opposite surfaces (541, 551, 561, 571) A magnetic field is formed.

At this time, by the magnetic field formed by the first and third blocks 521 , 531 , 523 , 533 , the strength of the magnetic field formed between the first Halbach arrangement 520 and the second Halbach arrangement 530 is strengthened. can be

In the embodiment shown in FIGS. 39 (a) and 40 (a), the direction of the current is the direction from the second fixed contact 22b to the movable contact 43 through the first fixed contact 22a. .

In the embodiment shown in FIG. 39 (a), if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

In the embodiment shown in (a) of FIG. 40 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated in the vicinity of the first fixed contactor 22a is formed toward the rear left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the rear left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in FIGS. 39 (b) and 40 (b), the direction of the current is a direction from the first fixed contact 22a through the movable contact 43 to the second fixed contact 22b. .

In the embodiment shown in FIG. 39 (b), if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated near the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the rear right side. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the rear right side.

In the embodiment shown in (b) of FIG. 40 , if Fleming's left hand rule is applied to the first fixed contactor 22a, the electromagnetic force generated near the first fixed contactor 22a is formed toward the front left. Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the front left.

Similarly, if Fleming's left hand rule is applied to the second fixed contactor 22b, the electromagnetic force generated in the vicinity of the second fixed contactor 22b is formed toward the front right. Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the front right.

Although not shown, when the polarity of each surface of the first and second Halbach arrays 520 and 530 and the first to fourth magnet parts 540 , 550 , 560 and 570 is changed, the first and second The directions of the magnetic fields formed in the Halbach arrays 520 and 530 and the first to fourth magnet units 540 , 550 , 560 and 570 are opposite to each other. Accordingly, the path A.P of the generated electromagnetic force and arc is also formed in the reverse direction.

That is, in the energized situation as shown in (a) of FIG. 39 , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contactor 22a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

In the energized situation as shown in FIG. 40(a), the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the left in the front. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

Similarly, in the energized situation as shown in FIG. 39(b), the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the rear left. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the front right.

In the energized situation as shown in FIG. 40B, the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the left of the rear. In addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the rear right side.

Therefore, the arc path forming unit 500 according to the present embodiment, the polarity or direct current of the first and second Halbach arrays 520 and 530 and the first to fourth magnet parts 540 , 550 , 560 , 570 . Regardless of the direction of the current passed through the relay 1, the path A.P of the electromagnetic force and the arc may be formed in a direction away from the center C.

Accordingly, damage to each component of the DC relay 1 disposed adjacent to the central portion C can be prevented. Furthermore, the generated arc can be quickly discharged to the outside, so that the operation reliability of the DC relay 1 can be improved.

Although the above has been described with reference to the preferred embodiment of the present invention, those of ordinary skill in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

1: DC relay
10: frame part
11: upper frame
12: lower frame
13: Insulation plate
14: support plate
20: opening and closing part
21: arc chamber
22: fixed contact
22a: first fixed contact
22b: second fixed contact
23: sealing member
30: core part
31: fixed core
32: movable core
33: York
34: bobbin
35: coil
36: return spring
37: cylinder
40: movable contact part
41: housing
42: cover
43: operation contactor
44: shaft
45: elastic part
100: arc path forming unit according to an embodiment of the present invention
110: magnet frame
111: first side
112: second side
113: the third side
114: fourth side
115: space part
120: first halbach arrangement
121: first block
121a: first inner surface
121b: first outer surface
122: second block
122a: second inner surface
122b: second outer surface
123: third block
123a: the third inner
123b: third outer surface
124: fourth block
124a: fourth inner surface
124b: fourth outer surface
125: fifth block
125a: fifth inner surface
125b: fifth outer surface
130: second halbach arrangement
131: first block
131a: first inner surface
131b: first outer surface
132: second block
132a: second inner surface
132b: second outer surface
133: third block
133a: third inner surface
133b: third outer surface
134: fourth block
134a: fourth inner
134b: fourth outer surface
135: fifth block
135a: fifth inner surface
135b: fifth outer surface
140: first magnet unit
141: first opposing surface
142: first opposite side
150: second magnet unit
151: second opposing surface
152: second opposite surface
160: third magnet unit
161: third opposing surface
162: the third opposite side
170: fourth magnet unit
171: fourth opposing surface
172: fourth opposite side
200: arc path forming unit according to another embodiment of the present invention
210: magnet frame
211: first side
212: second side
213: the third side
214: fourth side
215: space part
220: Halbach arrangement
221: first block
221a: first inner surface
221b: first outer surface
222: second block
222a: second inner surface
222b: second outer surface
223: third block
223a: third inner surface
223b: third outer surface
230: first magnet unit
231: first opposing surface
232: first opposite surface
240: second magnet unit
241: second opposing surface
242: second opposite side
250: third magnet unit
251: third opposing surface
252: the third opposite side
260: fourth magnet unit
261: fourth opposing surface
262: fourth opposite side
270: fifth magnet unit
271: fifth inner
272: fifth exterior
300: arc path forming unit according to another embodiment of the present invention
310: magnet frame
311: first side
312: second side
313: the third side
314: fourth side
315: space part
320: first halbach arrangement
321: first block
321a: first inner surface
321b: first outer surface
322: second block
322a: second inner surface
322b: second outer surface
323: third block
323a: third inner
323b: third outer surface
330: second halbach arrangement
331: first block
331a: first inner surface
331b: first outer surface
332: second block
332a: second inner surface
332b: second outer surface
333: third block
333a: third inner
333b: third outer surface
340: first magnet unit
341: first opposing surface
342: first opposite side
350: second magnet unit
351: second opposing surface
352: second opposite side
360: third magnet unit
361: third opposing surface
362: the third opposite side
370: fourth magnet unit
371: fourth opposing surface
372: fourth opposite side
400: arc path forming unit according to another embodiment of the present invention
410: magnet frame
411: first side
412: second side
413: 3rd side
414: fourth side
415: space part
420: first halbach arrangement
421: first block
421a: first inner surface
421b: first outer surface
422: second block
422a: second inner surface
422b: second outer surface
423: third block
423a: third inner
423b: third outer surface
430: first magnet unit
431: first opposing surface
432: first opposite side
440: second magnet unit
441: second opposing surface
442: second opposite side
450: third magnet unit
451: third opposing surface
452: third opposite side
460: fourth magnet unit
461: fourth opposing surface
462: fourth opposite side
470: fifth magnet unit
471: fifth opposing surface
472: fifth opposite side
500: arc path forming unit according to another embodiment of the present invention
510: magnet frame
511: first side
512: second side
513: the third side
514: fourth side
515: space part
520: first halbach arrangement
521: first block
521a: first inner surface
521b: first outer surface
522: second block
522a: second inner surface
522b: second outer surface
523: third block
523a: third inner
523b: third outer surface
530: second Halbach arrangement
531: first block
531a: first inner surface
531b: first outer surface
532: second block
532a: second inner surface
532b: second outer surface
533: third block
533a: third inner
533b: third outer surface
540: first magnet unit
541: first opposing surface
542: first opposite side
550: second magnet unit
551: second opposing surface
552: second opposite side
560: third magnet unit
561: third opposing surface
562: the third opposite side
570: fourth magnet unit
571: fourth opposing surface
572: fourth opposite side
1000: DC relay according to the prior art
1100: fixed contact according to the prior art
1200: movable contact according to the prior art
1300: a permanent magnet according to the prior art
1310: first permanent magnet according to the prior art
1320: second permanent magnet according to the prior art
C: the center of the space portion (115, 215, 315, 415, 515)
A. P: arc path

Claims (27)

delete a magnet frame having a space in which the fixed contact and the movable contact are accommodated;
It is located in the space portion of the magnet frame, comprising a Halbach array (Halbach array) for forming a magnetic field in the space portion and a magnet portion provided separately from the Halbach array,
The space portion, the length in one direction is formed to be longer than the length in the other direction,
The magnet frame,
first and second surfaces extending in the one direction and facing each other to surround a portion of the space portion; and
and a third surface and a fourth surface extending in the other direction, continuous with the first surface and the second surface, respectively, disposed to face each other and surrounding the remaining part of the space,
The Halbach arrangement is
It is arranged side by side in the other direction, includes a plurality of blocks formed of a magnetic material, and is located adjacent to any one or more surfaces of the third surface and the fourth surface,
A plurality of the magnet unit is provided,
Any one or more of the plurality of magnet parts is located adjacent to the first surface,
Another one or more of the plurality of magnet parts is located adjacent to the second surface,
The Halbach arrangement is
a first Halbach arrangement positioned adjacent to any one of the third surface and the fourth surface; and
and a second Halbach arrangement disposed adjacent to the other of the third surface and the fourth surface and disposed to face the first Halbach arrangement with the space portion therebetween,
The magnet part,
a first magnet part and a second magnet part positioned adjacent to any one of the first surface and the second surface and arranged in parallel along the one direction; and
Located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, the first magnet part and the second magnet part facing each other with the space part therebetween Including a third magnet portion and a fourth magnet portion disposed,
arc path forming part. 3. The method of claim 2,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the surfaces of the first Halbach arrangement and the second Halbach arrangement facing each other is magnetized to the same polarity as the polarity,
The other one of the surfaces of the first Halbach arrangement and the second Halbach arrangement facing each other is magnetized to a polarity different from the polarity,
arc path forming part. 3. The method of claim 2,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each side of the first Halbach arrangement and the second Halbach arrangement facing each other is magnetized to a polarity different from the polarity,
arc path forming part. 3. The method of claim 2,
The first Halbach arrangement is,
a first block positioned to be biased toward any one of the first surface and the second surface;
a third block positioned to be biased toward the other of the first surface and the second surface; and
a second block positioned between the first block and the third block;
The second Halbach arrangement is,
a first block positioned to be biased toward any one of the first surface and the second surface;
a third block positioned to be biased toward the other of the first surface and the second surface; and
comprising a second block positioned between the first block and the third block,
arc path forming part. 6. The method of claim 5,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the surfaces of the second block of the first Halbach arrangement and the second block of the second Halbach arrangement facing each other is magnetized with the same polarity as the polarity,
The second block of the first Halbach arrangement and the second block of the second Halbach arrangement face each other, the other one of the faces being magnetized to a polarity different from the polarity,
arc path forming part. 6. The method of claim 5,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each side of the second block of the first Halbach arrangement and the second block of the second Halbach arrangement facing each other is magnetized with a polarity different from the polarity,
arc path forming part. 3. The method of claim 2,
The first Halbach arrangement is,
a first block disposed to overlap with the fixed contact in the one direction; and
It includes a second block located biased to any one of the first surface and the second surface,
The second Halbach arrangement is,
a first block disposed to overlap with the fixed contact in the one direction; and
Containing a second block located biased to the other one of the first surface and the second surface,
arc path forming part. 9. The method of claim 8,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the surfaces of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other is magnetized with the same polarity as the polarity,
The first block of the first Halbach arrangement and the first block of the second Halbach arrangement face each other, the other one of the faces is magnetized to a polarity different from the polarity,
arc path forming part. 9. The method of claim 8,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each face of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other is magnetized with a polarity different from the polarity,
arc path forming part. 3. The method of claim 2,
The first Halbach arrangement is,
a first block disposed to overlap with the fixed contact in the one direction; and
It includes a second block located biased to any one of the first surface and the second surface,
The second Halbach arrangement is,
a first block disposed to overlap with the fixed contact in the one direction;
a second block positioned to be biased toward the other of the first surface and the second surface; and
Containing a third block located biased to the one of the first surface and the second surface,
arc path forming part. 12. The method of claim 11,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the surfaces of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other is magnetized with the same polarity as the polarity,
The first block of the first Halbach arrangement and the first block of the second Halbach arrangement face each other, the other one of the faces is magnetized to a polarity different from the polarity,
arc path forming part. 12. The method of claim 11,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each face of the first block of the first Halbach arrangement and the first block of the second Halbach arrangement facing each other is magnetized with a polarity different from the polarity,
arc path forming part. a magnet frame having a space in which the fixed contact and the movable contact are accommodated;
It is located in the space portion of the magnet frame, comprising a Halbach array (Halbach array) for forming a magnetic field in the space portion and a magnet portion provided separately from the Halbach array,
The space portion, the length in one direction is formed to be longer than the length in the other direction,
The magnet frame,
first and second surfaces extending in the one direction and facing each other to surround a portion of the space portion; and
and a third surface and a fourth surface extending in the other direction, continuous with the first surface and the second surface, respectively, disposed to face each other and surrounding the remaining part of the space,
The Halbach arrangement is
It is arranged side by side in the other direction, includes a plurality of blocks formed of a magnetic material, and is located adjacent to at least one surface of the third surface and the fourth surface,
A plurality of the magnet unit is provided,
Any one or more of the plurality of magnet parts is located adjacent to the first surface,
Another one or more of the plurality of magnet parts is located adjacent to the second surface,
The Halbach arrangement is located adjacent to any one of the third surface and the fourth surface,
The magnet part,
a first magnet part and a second magnet part positioned adjacent to any one of the first surface and the second surface and arranged in parallel along the one direction;
Located adjacent to the other one of the first surface and the second surface, arranged in parallel along the one direction, the first magnet part and the second magnet part facing each other with the space part therebetween a third magnet part and a fourth magnet part disposed; and
It is positioned adjacent to the other one of the third surface and the fourth surface, including a fifth magnet portion disposed to face the Halbach arrangement with the space portion therebetween,
arc path forming part. 15. The method of claim 14,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the surfaces facing the Halbach arrangement and the fifth magnet part is magnetized with the same polarity as the polarity,
The other one of the surfaces facing the Halbach arrangement and the fifth magnet part is magnetized to a polarity different from the polarity,
arc path forming part. 15. The method of claim 14,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each side facing the Halbach arrangement and the fifth magnet part is magnetized to a polarity different from the polarity,
arc path forming part. 15. The method of claim 14,
The Halbach arrangement is
a first block positioned to be biased toward any one of the first surface and the second surface;
a third block positioned to be biased toward the other of the first surface and the second surface; and
comprising a second block positioned between the first block and the third block,
arc path forming part. 18. The method of claim 17,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the faces of the second block and the fifth magnet part facing each other of the Halbach arrangement is magnetized with the same polarity as the polarity,
The second block and the fifth magnet part of the Halbach arrangement, the other one of the faces facing each other is magnetized to a polarity different from the polarity,
arc path forming part. 18. The method of claim 17,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each side facing the second block and the fifth magnet part of the Halbach arrangement is magnetized to a polarity different from the polarity,
arc path forming part. 15. The method of claim 14,
The Halbach arrangement is
a first block disposed to overlap with the fixed contact in the one direction; and
Containing a second block located biased to any one of the first surface and the second surface,
arc path forming part. 18. The method of claim 17,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Any one of the surfaces of the first block and the fifth magnet part facing each other of the Halbach arrangement is magnetized with the same polarity as the polarity,
The other one of the surfaces facing each other of the first block and the fifth magnet part of the Halbach arrangement is magnetized to a polarity different from the polarity,
arc path forming part. 18. The method of claim 17,
Each surface of the first magnet part and the second magnet part facing each other, and each surface facing the third magnet part and the fourth magnet part are magnetized with the same polarity,
Each side of the first block and the fifth magnet part facing each other of the Halbach arrangement is magnetized with a polarity different from the polarity,
arc path forming part. a plurality of fixed contacts provided to be spaced apart from each other in one direction;
a movable contact contacting or spaced apart from the fixed contact; and
Including; arc path forming part for forming a path of the arc in the space in which the fixed contact and the movable contact are accommodated;
The arc path forming unit is made of the arc path forming unit according to any one of claims 2 to 22, DC relay. delete delete delete delete

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