KR102452361B1 - Arc path former and direct current relay include the same - Google Patents

Abstract

Disclosed are an arc path forming unit and a DC relay including the same. The arc path forming unit according to each embodiment of the present invention includes a Halbach arrangement or a magnet unit. The Halbach arrangement or the magnet section forms a magnetic field inside the arc path forming section. The formed magnetic field and the current passed through the DC relay form an electromagnetic force. The arc generated in the vicinity of each fixed contact is induced along the direction of the electromagnetic force formed. At this time, the electromagnetic force generated in the vicinity of each fixed contact is formed toward the same direction. 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 includes a Halbach array for forming a magnetic field in the space portion, wherein the space portion is formed to have a length in one direction longer than a length in the other direction, and the magnet The frame may include first and second surfaces extending in the one direction and facing each other to surround 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, wherein the fixed contact is provided in plurality, the plurality of fixed contacts are arranged to be spaced apart from each other along the one direction, and the Halbach arrangement includes a plurality of blocks arranged side by side in the one direction and formed of a magnetic material, It provides an arc path forming part positioned adjacent to any one or more of the first surface and the second surface and arranged to overlap the plurality of fixed contacts along the other direction.

In addition, the Halbach arrangement of the arc path forming unit may include: a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and a second Halbach arrangement disposed adjacent to the other one of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween.

In addition, among the surfaces of the first Halbach arrangement of the arc path forming part, a surface facing the second Halbach arrangement and a surface facing the first Halbach arrangement among the surfaces of the second Halbach arrangement are magnetized with different polarities can be

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 third surface and the fourth surface; a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block, wherein The second Halbach arrangement may include: a first block positioned to be biased toward any one of the third surface and the fourth surface; a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block. .

In addition, the first Halbach arrangement of the arc path forming part includes a surface facing the second block among surfaces of the first block facing the second block and a surface of the third block facing the second block, and the second block A surface of the surfaces facing the second Halbach arrangement is magnetized with the same polarity, and among the surfaces of the third block, a surface facing the fourth block and a surface of the fifth block facing the fourth block, A surface of the fourth block facing the second Halbach arrangement is magnetized to a polarity different from the polarity, and the second Halbach arrangement is one of the surfaces of the first block facing the second block and the Among the surfaces of the third block, a surface facing the second block and a surface of the second block facing the second Halbach arrangement are magnetized with the different polarities, and among the surfaces of the third block, the fourth block Among the surfaces of the fifth block and the fifth block, the fourth block, and the fourth block, the second Halbach arrangement, may be magnetized with the polarity.

In addition, the arc path forming part is disposed adjacent to the other one of the first surface and the second surface, to face the Halbach arrangement with the space portion therebetween, and the third surface and the fourth surface a first magnet portion disposed to be biased toward any one of the surfaces; and disposed adjacent to the other one of the first surface and the second surface, facing the Halbach arrangement with the space portion therebetween, and the other one of the third surface and the fourth surface It may include a second magnet portion disposed to be biased.

In addition, among the surfaces of the Halbach arrangement of the arc path forming part, a surface facing the first magnet portion and a surface of the first magnet portion facing the Halbach arrangement are magnetized with different polarities, and the surface of the Halbach arrangement A surface facing the second magnet part and a surface facing the Halbach arrangement among the surfaces of the second magnet unit are magnetized with different polarities, and a surface facing the first magnet unit among the surfaces of the Halbach arrangement surface and the second magnet Among the negative surfaces, the surface facing the Halbach arrangement may be magnetized with the same polarity.

In addition, the Halbach arrangement of the arc path forming unit, the first block is located biased to any one of the third surface and the fourth surface; a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block, wherein The second block may be disposed to face the first magnet part, and the fourth block may be disposed to face the second magnet part.

In addition, among the surfaces of the second block of the arc path forming part, a surface facing the first magnet part and a surface of the first magnet part facing the second block are magnetized with different polarities, and the surface of the fourth block Among the surfaces of the second magnet portion and the surface of the second magnet portion, the surfaces facing the fourth block are magnetized with different polarities, and among the surfaces of the second block, the surface facing the first magnet portion and the fourth block A surface of the surface facing the second magnet part may be magnetized with different polarities.

In addition, the Halbach arrangement of the arc path forming unit may include: a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and a second Halbach arrangement disposed adjacent to the other one of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween, wherein the first Halbach arrangement is included. Among the plurality of blocks in the array, the number of blocks forming the magnetic field in one direction may be greater than the number of blocks forming the magnetic field in the other direction.

In addition, among the surfaces of the first Halbach arrangement of the arc path forming part, a surface facing the second Halbach arrangement and a surface facing the first Halbach arrangement among the surfaces of the second Halbach arrangement are magnetized with different polarities can be

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 third surface and the fourth surface; a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block, wherein The second Halbach arrangement may include: a first block positioned to be biased toward any one of the third surface and the fourth surface; a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block. .

In addition, the first Halbach arrangement of the arc path forming part is a surface facing the second Halbach arrangement among the surfaces of the first block, the surface facing the first block among the surfaces of the second block, the fourth A surface of the block facing the fifth block and a surface of the fifth block facing the second Halbach arrangement are magnetized with the same polarity, and among the surfaces of the second block facing the third block, Among the surfaces of the fourth block, a surface facing the third block and a surface of the third block facing the second Halbach arrangement are magnetized with a polarity different from the polarity, and the second Halbach arrangement is One of the surfaces of the first block facing the second Halbach arrangement, one of the surfaces of the second block facing the first block, one of the surfaces of the fourth block facing the fifth block, and the fifth block Of the faces of the faces facing the second Halbach arrangement are magnetized to the different polarity, the faces of the second blocks facing the third block, the faces of the fourth blocks facing the third block, and A surface of the third block facing the second Halbach arrangement may be magnetized to 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, including a Halbach arrangement for forming a magnetic field in the space portion, 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 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 is arranged side by side in the one direction, includes a plurality of blocks formed of a magnetic material, is located adjacent to any one or more surfaces of the first surface and the second surface, and includes a plurality of the blocks along the other direction. Provided is a DC relay arranged to overlap with a fixed contactor.

In addition, the Halbach arrangement of the DC relay may include: a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and a second Halbach arrangement disposed adjacent to the other one of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween, wherein the first Halbach arrangement is included. Among the surfaces of the arrangement, a surface facing the second Halbach arrangement and a surface of the second Halbach arrangement facing the first Halbach arrangement may be magnetized with different polarities.

In addition, the DC relay is disposed adjacent to the other one of the first surface and the second surface, faces the Halbach arrangement with the space portion therebetween, and the third surface and the fourth surface a first magnet portion disposed to be biased toward any one surface; and disposed adjacent to the other one of the first surface and the second surface, facing the Halbach arrangement with the space portion therebetween, and the other one of the third surface and the fourth surface and a second magnet portion disposed to be biased in the halbach arrangement, wherein a surface of the surface of the Halbach arrangement facing the first magnet portion and a surface of the first magnet portion facing the Halbach arrangement are magnetized with different polarities, Among the surfaces of the Bach arrangement, a surface facing the second magnet portion and a surface of the second magnet portion facing the Halbach arrangement are magnetized with different polarities, and among the surfaces of the Halbach arrangement, a surface facing the first magnet portion and A surface of the second magnet unit facing the Halbach arrangement may be magnetized with the same polarity.

In addition, the Halbach arrangement of the DC relay may include: a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and a second Halbach arrangement disposed adjacent to the other one of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween, wherein the first Halbach arrangement is included. Among the plurality of blocks of the array, the number of blocks forming the magnetic field in one direction is greater than the number of blocks forming the magnetic field in the other direction, and the second Halbach arrangement among the surfaces of the first Halbach arrangement A surface facing the first Halbach arrangement and a surface facing the first Halbach arrangement among the surfaces of the second Halbach arrangement may be magnetized with different polarities.

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 is a conceptual diagram illustrating an arc path forming unit according to an embodiment of the present invention.
6 is a conceptual diagram illustrating a path of a magnetic field and an arc formed by the arc path forming unit according to the embodiment of FIG. 5 .
7 and 8 are conceptual views illustrating an arc path forming unit according to another embodiment of the present invention.
9 and 10 are conceptual views illustrating a magnetic field and an arc path formed by the arc path forming unit according to the embodiment of FIGS. 8 and 9 .
11 is a conceptual diagram illustrating an arc path forming unit and a path of a magnetic field and an arc formed by the arc path forming unit according to another embodiment of the present invention.

Hereinafter, the DC relay 1 and the arc path forming unit 100, 200, 300) 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 is formed 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.

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 units 100 , 200 , and 300 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 11 , the DC relay 1 according to the embodiment of the present invention includes arc path forming units 100 , 200 , and 300 .

The arc path forming units 100 , 200 , and 300 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 , and 300 will be described as separate clauses.

The arc path forming units 100 , 200 , and 300 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 is a type that can be energized and de-energized with the outside by 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.

(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 . Also, the arc path forming units 100 , 200 , and 300 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 accommodated in the upper frame 11 by the insulating plate 13 and the core part accommodated in the lower frame 12 inside Any energization between (30) 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 . The magnetic path may generate a driving force for moving the movable core 32 of the core part 30 toward the fixed core 31 .

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 , and 300 may be provided outside the arc chamber 21 . The arc path forming units 100 , 200 , and 300 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 , and 300 , 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 units 100 , 200 , and 300 .

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 a restoring force by deformation of a shape and providing the stored restoring force to another member. 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 according to an embodiment of the present invention

5 to 11 , arc path forming units 100 , 200 , and 300 according to various embodiments of the present disclosure are illustrated. Each arc path forming unit 100 , 200 , 300 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 can be said that the arc path forming units 100 , 200 , and 300 form the arc path A.P, which is a path through which the generated arc flows.

The arc path forming units 100 , 200 , and 300 are located in a space formed inside the upper frame 11 . The arc path forming units 100 , 200 , and 300 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 .

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

The arc path forming unit 100 , 200 , 300 according to various embodiments of the present disclosure includes a Halbach arrangement or a magnet unit. The Halbach arrangement or the magnet part forms a magnetic field inside the arc path forming part 100, 200, 300 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 , and 300 form an electromagnetic force in a direction away from the center C of the space portions 115 , 215 , 315 . 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, the configuration of each arc path forming unit 100 , 200 , and 300 and the arc path A.P formed by each arc path forming unit 100 , 200 , 300 will be described in detail with reference to the accompanying drawings. .

The arc path forming units 100 , 200 , and 300 according to various embodiments to be described below may include a Halbach arrangement positioned on at least one 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 , and 311 , and the front side may be adjacent to the second surfaces 112 , 212 , and 312 .

Also, the left side may be defined in a direction adjacent to the third surfaces 113 , 213 , and 313 , and the right side may be defined in a direction adjacent to the fourth surfaces 114 , 214 , and 314 .

(1) Description of the configuration 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 and 6 .

Referring to FIG. 5 , the arc path forming unit 100 according to the illustrated embodiment includes a magnet frame 110 , a first Halbach arrangement 120 , and a second Halbach arrangement 130 .

The magnet frame 110 forms a skeleton of the arc path forming unit 100 . A first Halbach arrangement 120 and a second Halbach arrangement 130 are disposed on the magnet frame 110 . In an embodiment, the first Halbach arrangement 120 and the second Halbach arrangement 130 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 Halbach arrangement 120, the second Halbach arrangement 130 is can be located.

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.

A fastening member (not shown) may be provided for coupling the respective surfaces 111 , 112 , 113 , and 114 with the first and second Halbach arrays 120 and 130 .

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 Halbach arrangement 120 and the second Halbach arrangement 130 .

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 a first Halbach arrangement 120 and a second Halbach arrangement 130 .

In the illustrated embodiment, a plurality of magnetic materials constituting the first Halbach array 120 are sequentially arranged side by side from left to right. That is, in the illustrated embodiment, the first Halbach arrangement 120 is formed to extend in the left and right 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 .

The first Halbach arrangement 120 may be positioned adjacent to any one of the first and second surfaces 111 and 112 . 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 first surface 111 , adjacent to the first surface 111 , and a second Facing the Halbach arrangement 130 .

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 arrangement 120 may enhance the strength of the magnetic field formed by itself and the magnetic field formed with the second Halbach arrangement 130 . 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 , a third block 123 , a fourth block 124 , and a fifth block 125 . include It will be understood that the plurality of magnetic materials constituting the first Halbach array 120 are named blocks 121 , 122 , 123 , 124 and 125 , respectively.

The first to fifth blocks 121 , 122 , 123 , 124 , and 125 may be formed of a magnetic material. In an embodiment, the first to fifth blocks 121 , 122 , 123 , 124 , and 125 may be provided with permanent magnets or electromagnets.

The first to fifth blocks 121 , 122 , 123 , 124 , and 125 may be arranged side by side in one direction. In the illustrated embodiment, the first to fifth blocks 121 , 122 , 123 , 124 , and 125 are arranged in parallel in the extending direction of the first surface 111 , that is, in the left and right direction.

The first block 121 is located at the leftmost side. That is, the first block 121 is positioned adjacent to the third surface 113 . Also, the fifth block 125 is located on the rightmost side. That is, the third block 123 is positioned adjacent to the fourth surface 114 .

The second to fourth blocks 122 , 123 , and 124 are sequentially positioned side by side in a direction from left to right between the first block 121 and the fifth block 125 .

In an embodiment, the blocks 121 , 122 , 123 , 124 , and 125 adjacent to each other may contact each other.

The second block 122 is the first fixed contact 22a and the second Halbach arrangement 130 in the direction toward the second Halbach arrangement 130 or the space portion 115, and in the front-rear direction in the illustrated embodiment. It may be disposed to overlap the second block 132 .

The fourth block 124 is the second fixed contact 22b and the second Halbach arrangement 130 in the direction toward the second Halbach arrangement 130 or the space portion 115, and in the front-rear direction in the illustrated embodiment. It may be disposed to overlap the fourth block 134 .

Each block 121 , 122 , 123 , 124 , 125 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).

The third block 123 includes a third inner surface 123a facing the second block 122 and a third outer surface 123b facing the fourth block 124 .

The fourth block 124 has a fourth inner surface 124a facing the space 115 or the second Halbach arrangement 130 and a fourth outer surface opposite to the space 115 or the second Halbach arrangement 130 . (124b).

The fifth block 125 includes a fifth inner surface 125a facing the fourth block 124 and a fifth outer surface 125b facing the fourth block 124 .

The plurality of surfaces of each block 121 , 122 , 123 , 124 , and 125 may be magnetized according to a predetermined rule to form a Halbach arrangement.

Specifically, the first to third inner surfaces 121a, 122a, and 123a and the fourth and fifth outer surfaces 124b and 125b may be magnetized with the same polarity. In addition, the first to third outer surfaces 121b , 122b , and 123b and the fourth and fifth inner surfaces 124a and 125a may be magnetized to have a polarity different from the polarity.

At this time, the first to third inner surfaces (121a, 122a, 123a) and the fourth and fifth outer surfaces (124b, 125b) are the first to third outer surfaces (131b, 132b, 133b) of the second Halbach arrangement 130 and The fourth and fifth inner surfaces 134a and 135a may be magnetized to have the same polarity.

Similarly, the first to third outer surfaces 121b, 122b, 123b and the fourth and fifth inner surfaces 124a, 125a are the first to third inner surfaces 131a, 132a, 133a of the second Halbach arrangement 130 ). and the fourth and fifth outer surfaces 134b and 135b may be magnetized to the same polarity.

In the illustrated embodiment, a plurality of magnetic materials constituting the second Halbach array 130 are sequentially arranged side by side from left to right. That is, in the illustrated embodiment, the second Halbach arrangement 130 is formed extending in the left and right 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 .

The second Halbach arrangement 130 may be positioned adjacent to the other one of the first and second surfaces 111 and 112 . In an embodiment, the second Halbach arrangement 130 may be coupled to the inside of the other surface (ie, the direction toward the space 115 ).

In the illustrated embodiment, the second Halbach arrangement 130 is disposed on the inner side of the second surface 112 , adjacent to the second surface 112 , and the first Facing the Halbach arrangement 120 .

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 and the magnetic field formed with the first Halbach arrangement 120 . 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 , a third block 133 , a fourth block 134 , and a fifth block 135 . include It will be understood that the plurality of magnetic materials constituting the second Halbach array 130 are named blocks 131 , 132 , 133 , 134 and 135 , respectively.

The first to fifth blocks 131 , 132 , 133 , 134 , and 135 may be formed of a magnetic material. In an embodiment, the first to fifth blocks 131 , 132 , 133 , 134 , and 135 may be provided with permanent magnets or electromagnets.

The first to fifth blocks 131 , 132 , 133 , 134 , and 135 may be arranged side by side in one direction. In the illustrated embodiment, the first to fifth blocks 131 , 132 , 133 , 134 , and 135 are arranged in parallel in the extending direction of the first surface 111 , that is, in the left-right direction.

The first block 131 is located on the leftmost side. That is, the first block 131 is positioned adjacent to the third surface 113 . Also, the fifth block 135 is located on the rightmost side. That is, the third block 133 is positioned adjacent to the fourth surface 114 .

The second to fourth blocks 132 , 133 , and 134 are sequentially positioned side by side in a direction from left to right between the first block 131 and the fifth block 135 .

In an embodiment, the blocks 131 , 132 , 133 , 134 , and 135 adjacent to each other may contact each other.

The second block 132 is the first fixed contact 22a and the first Halbach arrangement 120 in the direction toward the first Halbach arrangement 120 or the space portion 115, in the illustrated embodiment, in the front-rear direction. It may be disposed to overlap the second block 122 .

The fourth block 134 is a direction toward the first Halbach arrangement 120 or the space portion 115, in the illustrated embodiment, the second fixed contact 22b and the first Halbach arrangement 120 in the front-rear direction. It may be disposed to overlap the fourth block 124 .

Each block 131 , 132 , 133 , 134 , 135 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).

The third block 133 includes a third inner surface 133a facing the second block 132 and a third outer surface 133b facing the fourth block 134 .

The fourth block 134 has a fourth inner surface 134a facing the space 115 or the first Halbach arrangement 120 and a fourth outer surface opposite to the space 115 or the first Halbach arrangement 120 . (134b).

The fifth block 135 includes a fifth inner surface 135a facing the fourth block 134 and a fifth outer surface 135b facing the fourth block 134 .

The plurality of surfaces of each block 131 , 132 , 133 , 134 , and 135 may be magnetized according to a predetermined rule to form a Halbach arrangement.

Specifically, the first to third inner surfaces 131a, 132a, and 133a and the fourth and fifth outer surfaces 134b and 135b may be magnetized with the same polarity. In addition, the first to third outer surfaces 131b , 132b , and 133b and the fourth and fifth inner surfaces 134a and 135a may be magnetized to have a polarity different from the polarity.

At this time, the first to third inner surfaces (131a, 132a, 133a) and the fourth and fifth outer surfaces (134b, 135b) are the first to third outer surfaces (121b, 122b, 123b) of the first Halbach arrangement 120 and The fourth and fifth inner surfaces 124a and 125a may be magnetized with the same polarity.

Similarly, the first to third outer surfaces 131b, 132b, 133b and the fourth and fifth inner surfaces 134a, 135a are the first to third inner surfaces 131a, 132a, 133a of the second Halbach arrangement 130 ). and the fourth and fifth outer surfaces 134b and 135b may be 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 FIG. 6 .

Referring to FIG. 6 , the first to third inner surfaces 121a , 122a , and 123a of the first Halbach array 120 are magnetized to the N pole. In addition, the fourth and fifth inner surfaces 124a and 125a of the first Halbach arrangement 120 are magnetized to the S pole.

In addition, according to the above rule, the first to third inner surfaces 131a , 132a , and 133a of the second Halbach arrangement 130 are magnetized to the S pole. Further, the fourth and fifth inner surfaces 134a and 135a of the second Halbach arrangement 130 are magnetized to the N-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 132a A magnetic field is formed in the direction of

In addition, between the fourth block 124 of the first Halbach arrangement 120 and the fourth block 134 of the second Halbach arrangement 130, the fourth inner surface 124a is formed from the fourth inner surface 134a. A magnetic field is formed in the direction it is directed.

In the embodiment shown in (a) of FIG. 6 , the direction of the current is the direction from the second fixed contactor 22b to the first fixed contactor 22a through the movable contactor 43 .

When Fleming's 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 right.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the right.

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 right.

Accordingly, the arc path A.P in the vicinity of the second fixed contact 22b is also formed toward the right.

In the embodiment shown in (b) of FIG. 6 , the direction of the current is a direction from the first fixed contactor 22a to the movable contactor 43 and out to the second fixed contactor 22b.

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 left.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the 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 left.

Accordingly, the arc path A.P in the vicinity of the second fixed contact 22b is also formed toward the left.

Although not shown, when the polarity of each side of the first and second Halbach arrays 120 and 130 is changed, the directions of the magnetic fields formed by the first and second Halbach arrays 120 and 130 are opposite. do. 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. 6 , 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 addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the left.

Similarly, in the energized situation as shown in FIG. 6B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the right. 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 right.

As a result, the arc paths A.P formed in the vicinity of each of the fixed contacts 22a and 22b do not meet each other.

Therefore, the arc path forming unit 100 according to the present embodiment, regardless of the polarity of the first and second Halbach arrays 120 and 130 or the direction of the current flowing through the DC relay 1, electromagnetic force and arc A path (A.P) of can 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. 7 to 10 .

7 and 8 , the arc path forming unit 200 according to the illustrated embodiment includes a magnet frame 210 , a Halbach arrangement 220 , a first magnet unit 230 , and a second magnet unit 240 . ) is included.

The magnet frame 210 according to the present embodiment has the same structure and function as the magnet frame 210 according to the above-described embodiment. However, there is a difference in the arrangement method of the Halbach arrangement 220 and the first and second magnet units 230 and 240 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 210 according to the above-described embodiment.

In the illustrated embodiment, a plurality of magnetic materials constituting the Halbach array 220 are sequentially arranged side by side from left to right. That is, in the illustrated embodiment, the Halbach arrangement 220 is formed to extend in the left and right direction.

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 and second magnet parts 230 and 240 .

The Halbach arrangement 220 may be positioned adjacent to any one of the first and second surfaces 211 and 212 . 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.

In the embodiment shown in FIG. 7 , the Halbach arrangement 220 is disposed on the inner side of the second face 212 , adjacent to the second face 212 , and is disposed on the inner side of the first face 211 . The first and second magnet parts 230 and 240 face each other.

In the embodiment shown in FIG. 8 , the Halbach arrangement 220 is disposed on the inner side of the first surface 211 , adjacent to the first surface 211 , and is disposed on the inner side of the second surface 212 . The first and second magnet parts 230 and 240 face each other.

Between the Halbach arrangement 220 and the first and second magnet parts 230 and 240 , the space 215 and the fixed contact 22 and the movable contact 43 accommodated in the space 215 are positioned.

The Halbach arrangement 220 may enhance the strength of the magnetic field formed by itself and the magnetic field formed with the first and second magnet units 230 and 240 . 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 , a third block 223 , a fourth block 224 , and a fifth block 225 . . It will be understood that the plurality of magnetic materials constituting the Halbach array 220 are named blocks 221 , 222 , 223 , 224 and 225 , respectively.

The first to fifth blocks 221 , 222 , 223 , 224 and 225 may be formed of a magnetic material. In an embodiment, the first to fifth blocks 221 , 222 , 223 , 224 , 225 may be provided with permanent magnets or electromagnets.

The first to fifth blocks 221 , 222 , 223 , 224 and 225 may be arranged side by side in one direction. In the illustrated embodiment, the first to fifth blocks 221 , 222 , 223 , 224 , and 225 are arranged in parallel in a direction in which the first surface 211 extends, that is, in a left-right direction.

The first block 221 is located at the leftmost side. That is, the first block 221 is positioned adjacent to the third surface 213 . Also, the fifth block 225 is located on the rightmost side. That is, the third block 223 is positioned adjacent to the fourth surface 214 .

The second to fourth blocks 222 , 223 , and 224 are sequentially positioned side by side in a direction from left to right between the first block 221 and the fifth block 225 .

In an embodiment, the blocks 221 , 222 , 223 , 224 , and 225 adjacent to each other may contact each other.

The second block 222 is a direction toward the first and second magnet parts 230 and 240 or the space part 215, in the illustrated embodiment, the first fixed contact 22a and the first magnet part ( 230) and may be disposed to overlap.

The fourth block 224 is a second fixed contact 22b and a second magnet part ( 240) and may be disposed to overlap.

Each block 221 , 222 , 223 , 224 , 225 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 is a space portion 215 or a second inner surface 222a and a space portion 215 or first and second magnet portions 230 and 230 facing the first and second magnet portions 230 and 240. and a second outer surface 222b opposite 240 .

The third block 223 includes a third inner surface 223a facing the second block 222 and a third outer surface 223b facing the fourth block 224 .

The fourth block 224 is a space 215 or a fourth inner surface 224a and a space 215 or first and second magnet parts 230 and 230 facing the first and second magnet parts 230 and 240, and a fourth outer surface 224b opposite 240 .

The fifth block 225 includes a fifth inner surface 225a facing the fourth block 224 and a fifth outer surface 225b facing the fourth block 224 .

The plurality of surfaces of each of the blocks 221 , 222 , 223 , 224 and 225 may be magnetized according to a predetermined rule to form a Halbach arrangement.

Specifically, the first to third inner surfaces 221a, 222a, and 223a and the fourth and fifth outer surfaces 224b and 225b may be magnetized to have the same polarity. In addition, the first to third outer surfaces 221b, 222b, and 223b and the fourth and fifth inner surfaces 224a and 225a may be magnetized to have a polarity different from the polarity.

In this case, the first to third inner surfaces 221a , 222a , 223a and the fourth and fifth outer surfaces 224b and 225b may be magnetized with the same polarity as the first opposite surface 231 of the first magnet part 230 . .

Similarly, the first to third outer surfaces 221b, 222b, and 223b and the fourth and fifth inner surfaces 224a and 225a may be magnetized with the same polarity as the second opposite surface 241 of the second magnet unit 240 . have.

The first and second magnet parts 230 , 240 form a magnetic field on their own or with the Halbach arrangement 220 . The arc path A.P may be formed in the arc chamber 21 by the magnetic field formed by the first and second magnet units 230 and 240 .

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

The first and second magnet units 230 and 240 may be positioned adjacent to the other of the first and second surfaces 211 and 212 . In one embodiment, the first and second magnet parts 230 and 240 may be coupled to the inside of the other surface (ie, the direction toward the space part 215 ).

In the embodiment shown in FIG. 7 , the first and second magnet parts 230 and 240 are positioned on the first surface 211 , and the Halbach arrangement 220 positioned adjacent to the second surface 212 . to face

In the embodiment shown in FIG. 8 , the first and second magnet parts 230 and 240 are located on the second surface 212 , and the Halbach arrangement 220 positioned adjacent to the first surface 211 . to face

The first and second magnet parts 230 and 240 are arranged in parallel with each other in the extending direction thereof. In the illustrated embodiment, the first and second magnet parts 230 and 240 extend in the left-right direction (ie, the direction in which the first surface 211 or the second surface 212 extends), respectively. In addition, the first and second magnet parts 230 and 240 are arranged side by side in the left and right directions and adjacent to each other.

In an embodiment, the first and second magnet parts 230 and 240 may be in contact with each other.

The first and second magnet units 230 and 240 may be positioned to be biased toward different surfaces of the third and fourth surfaces 213 and 214, respectively.

In the illustrated embodiment, the first magnet unit 230 is positioned to be biased toward the third surface 213 . The first magnet portion 230 is a space portion 215 or a second block of the Halbach arrangement 220 in the direction toward the first fixed contact 22a and the Halbach arrangement 220 in the front-rear direction in the illustrated embodiment. It may be arranged to overlap with (222).

In the illustrated embodiment, the second magnet portion 240 is located biased to the fourth surface 214 . The second magnet unit 240 is a fourth block of the second fixed contactor 22b and the Halbach arrangement 220 in the direction toward the space portion 215 or the Halbach arrangement 220, in the illustrated embodiment in the front-rear direction. It may be disposed to overlap with the 224 .

The first and second magnet parts 230 and 240 are disposed to face the Halbach arrangement 220 with the space part 215 interposed therebetween.

The first and second magnet units 230 and 240 may strengthen the magnetic field formed by themselves and the strength of the magnetic field formed with the Halbach array 220 . Since the direction of the magnetic field formed by the first and second magnet units 230 and 240 and the process of strengthening the magnetic field are well-known techniques, a detailed description thereof will be omitted.

The first and second magnet units 230 and 240 each include a plurality of surfaces.

Specifically, the first magnet unit 230 includes a first opposing surface 231 facing the space 215 or Halbach arrangement 220 and a first opposite to the space 215 or Halbach arrangement 220 . opposite side 232 .

In addition, the second magnet portion 240 has a second opposing face 241 facing the space 215 or Halbach arrangement 220 and a second opposite face 241 facing the space 215 or Halbach arrangement 220 . face 242 .

Each surface of the first and second magnet parts 230 and 240 may be magnetized according to a predetermined rule.

Specifically, the first opposite surface 231 may be magnetized with the same polarity as the second opposite surface 242 . In addition, the first opposing surface 231 may be magnetized to have a polarity opposite to that of the first to third inner surfaces 221a , 222a , and 223a of the Halbach array 220 . Furthermore, the first opposing surface 231 may be magnetized with the same polarity as the fourth and fifth outer surfaces 224b and 225b of the Halbach arrangement 220 .

The second opposite surface 241 may be magnetized with the same polarity as the first opposite surface 232 . In addition, the second opposing surface 241 may be magnetized with a polarity opposite to that of the fourth and fifth inner surfaces 224a and 225a of the Halbach arrangement 220 . Furthermore, the second opposing surface 241 may be magnetized with the same polarity as the first to third outer surfaces 221b , 222b , 223b of the Halbach arrangement 220 .

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. 9 and 10 .

9 and 10 , the first to third inner surfaces 221a , 222a , and 223a of the Halbach array 220 are magnetized to the S pole. In addition, the fourth and fifth inner surfaces 224a and 225a of the Halbach arrangement 220 are magnetized to the N pole.

According to the above rule, the first facing surface 231 of the first magnet unit 230 is magnetized to the N pole, and the second facing surface 241 of the second magnet unit 240 is magnetized to the S pole.

Accordingly, between the second block 222 of the Halbach arrangement 220 and the first magnet unit 230 , a magnetic field in a direction from the first opposite surface 231 to the second inner surface 222a is formed.

Also, between the fourth block 224 and the second magnet unit 240 of the Halbach arrangement 220 , a magnetic field in a direction from the fourth inner surface 224a to the second opposite surface 241 is formed.

In the embodiment shown in FIG. 9( a ), the direction of the current is a direction from the second fixed contactor 22b to the first fixed contactor 22a through the movable contactor 43 .

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 right.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the right.

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 right.

Accordingly, the arc path A.P in the vicinity of the second fixed contact 22b is also formed toward the right.

In the embodiment shown in FIG. 9( b ), the direction of the current is a direction from the first fixed contactor 22a through the movable contactor 43 to the second fixed contactor 22b.

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 left.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the 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 left.

Accordingly, the arc path A.P in the vicinity of the second fixed contact 22b is also formed toward the left.

In the embodiment shown in FIG. 10( a ), the direction of the current is a direction from the second fixed contactor 22b to the first fixed contactor 22a through the movable contactor 43 .

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 left.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the 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 left.

Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the left.

In the embodiment shown in FIG. 10( b ), the direction of the current is the direction from the first fixed contactor 22a to the movable contactor 43 and out to the second fixed contactor 22b.

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 right.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the right.

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 right.

Accordingly, the arc path A.P in the vicinity of the second fixed contactor 22b is also formed toward the left.

Although not shown, when the polarity of each surface of the Halbach arrangement 220 and the first and second magnet units 230 and 240 is changed, the Halbach arrangement 220 , the first and second magnet units 230 . , 240) the direction of the magnetic field formed is 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. 9 , 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 addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the left.

Similarly, in the energized situation as shown in FIG. 9B , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed to face right. 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 right.

In addition, in the energized state as shown in FIG. 10A , the path A.P of the electromagnetic force and arc in the vicinity of the first fixed contact 22a is formed toward the right. 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 right.

Similarly, in a energized situation as shown in FIG. 10B , 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 addition, the path A.P of the electromagnetic force and arc in the vicinity of the second fixed contactor 22b is formed toward the left.

As a result, the arc paths A.P formed in the vicinity of each of the fixed contacts 22a and 22b do not meet each other.

Therefore, the arc path forming unit 200 according to this embodiment, the polarity of the Halbach array 220, the first and second magnet units 230 and 240 or the direction of the current passed through the DC relay 2 and Regardless, the path (A.P) of the electromagnetic force and arc can be formed in a direction away from the center (C).

Accordingly, damage to each component of the DC relay 2 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 2 can be improved.

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

Hereinafter, an arc path forming unit 300 according to another embodiment of the present invention will be described in detail with reference to FIG. 11 .

Referring to FIG. 11A , the arc path forming unit 300 according to the illustrated embodiment includes a magnet frame 310 , a first Halbach arrangement 320 , and a second Halbach arrangement 330 . .

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 disposed on the magnet frame 310 according to the present embodiment.

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 side by side from left to right. That is, in the illustrated embodiment, the first Halbach arrangement 320 is formed to extend in the left and right 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 .

The first Halbach arrangement 320 may be positioned adjacent to any one of the first and second surfaces 311 and 312 . 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 inner side of the first face 311, adjacent to the first face 311, the second positioned inside the second face 312 Facing the Halbach arrangement 330 .

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 may enhance the strength of the magnetic field formed by itself and the magnetic field formed with the second Halbach arrangement 330 . 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 , a second block 322 , a third block 323 , a fourth block 324 , and a fifth block 325 . include It will be understood that a plurality of magnetic materials constituting the first Halbach array 320 are designated as blocks 321 , 322 , 323 , 324 , and 325 , respectively.

The first to fifth blocks 321 , 322 , 323 , 324 , and 325 may be formed of a magnetic material. In an embodiment, the first to fifth blocks 321 , 322 , 323 , 324 , and 325 may be provided with permanent magnets or electromagnets.

The first to fifth blocks 321 , 322 , 323 , 324 , and 325 may be arranged side by side in one direction. In the illustrated embodiment, the first to fifth blocks 321 , 322 , 323 , 324 , and 325 are arranged in parallel in the extending direction of the first surface 311 , that is, in the left and right direction.

The first block 321 is located at the leftmost side. That is, the first block 321 is positioned adjacent to the third surface 313 . Also, the fifth block 325 is located on the rightmost side. That is, the third block 323 is positioned adjacent to the fourth surface 314 .

The second to fourth blocks 322 , 323 , and 324 are sequentially positioned side by side in a direction from left to right between the first block 321 and the fifth block 325 .

In an embodiment, the blocks 321 , 322 , 323 , 324 , and 325 adjacent to each other may contact each other.

The first block 321 is a direction toward the second Halbach arrangement 330 or the space portion 315, in the illustrated embodiment, the first fixed contact 22a and the second Halbach arrangement 330 in the front-rear direction. It may be disposed to overlap the first block 331 .

The third block 323 is the second Halbach arrangement 330 or the third block of the second Halbach arrangement 330 in the direction toward the space 315, and in the front-rear direction in the illustrated embodiment. It may be arranged to overlap with (333).

The fifth block 325 is the second fixed contact 22b and the second Halbach arrangement 330 in the direction toward the second Halbach arrangement 330 or the space portion 315, and in the front-rear direction in the illustrated embodiment. It may be disposed to overlap the fifth block 335 .

Each block 321 , 322 , 323 , 324 , 325 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 facing the third block 323 .

The third block 323 has a third inner surface 323a facing the space 315 or the second Halbach arrangement 330 and a third outer surface opposite to the space 315 or the second Halbach arrangement 330 . (323b).

The fourth block 324 includes a fourth inner surface 324a facing the third block 323 and a fourth outer surface 324b facing the fifth block 325 .

The fifth block 325 has a fifth inner surface 325a facing the space 315 or the second Halbach arrangement 330 and a fifth outer surface opposite to the space 315 or the second Halbach arrangement 330 . (325b).

Each surface of the first to fifth blocks 321 , 322 , 323 , 324 , and 325 may be magnetized according to a predetermined rule.

Specifically, the first, second, and fifth inner surfaces 321a, 322a, and 325a and the third and fourth outer surfaces 323b and 324b may be magnetized with the same polarity. In addition, the first, second, and fifth outer surfaces 321b, 322b, and 325b and the third and fourth inner surfaces 323a and 324a may be magnetized to have a polarity different from the polarity.

At this time, the first, second and fifth inner surfaces 321a, 322a, 325a and the third and fourth outer surfaces 323b and 324b are the third and fourth inner surfaces 333a and 334a of the second Halbach arrangement 330 . ) and the first, second and fifth outer surfaces 331b, 332b, and 335b may be magnetized to the same polarity.

Similarly, the first, second and fifth outer surfaces 321b, 322b, 325b and the third and fourth inner surfaces 323a, 324a are the first, second and fifth inner surfaces ( 331a, 332a, 335a) and the third and fourth outer surfaces 323b and 324b may be magnetized to the same polarity.

In the illustrated embodiment, a plurality of magnetic materials constituting the second Halbach array 330 are sequentially arranged side by side from left to right. That is, in the illustrated embodiment, the second Halbach arrangement 330 is formed to extend in the left and right 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 .

The second Halbach arrangement 330 may be positioned adjacent to the other of the first and second surfaces 311 and 312 . 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 on the inner side of the second surface 312 , adjacent to the second surface 312 , and is disposed on the inside of the first surface 311 . Facing the Halbach arrangement 320 .

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 and the magnetic field formed with the first Halbach arrangement 320 . 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 , a second block 332 , a third block 333 , a fourth block 334 , and a fifth block 335 . include It will be understood that a plurality of magnetic materials constituting the second Halbach array 330 are named blocks 331 , 332 , 333 , 334 , and 335 , respectively.

The first to fifth blocks 331 , 332 , 333 , 334 , and 335 may be formed of a magnetic material. In an embodiment, the first to fifth blocks 331 , 332 , 333 , 334 , 335 may be provided with permanent magnets or electromagnets.

The first to fifth blocks 331 , 332 , 333 , 334 , and 335 may be arranged side by side in one direction. In the illustrated embodiment, the first to fifth blocks 331 , 332 , 333 , 334 , and 335 are arranged in parallel in the extending direction of the first surface 311 , that is, in the left and right direction.

The first block 331 is located at the leftmost side. That is, the first block 331 is positioned adjacent to the third surface 313 . Also, the fifth block 335 is located on the rightmost side. That is, the third block 333 is positioned adjacent to the fourth surface 314 .

The second to fourth blocks 332 , 333 , and 334 are sequentially positioned side by side in a direction from left to right between the first block 331 and the fifth block 335 .

In an embodiment, the blocks 331 , 332 , 333 , 334 , and 335 adjacent to each other may contact each other.

The first block 331 is the first fixed contact 22a and the first Halbach arrangement 320 in the direction toward the first Halbach arrangement 320 or the space portion 315, and in the front-rear direction in the illustrated embodiment. It may be disposed to overlap the first block 321 .

The third block 333 is the first Halbach arrangement 320 or the third block of the first Halbach arrangement 320 in the direction toward the space 315, the center C and the first Halbach arrangement 320 in the front-rear direction in the illustrated embodiment. 323 and may be disposed to overlap.

The fifth block 335 is a direction toward the first Halbach arrangement 320 or the space portion 315, in the illustrated embodiment, in the front-rear direction of the second fixed contactor 22b and the first Halbach arrangement 320 . It may be disposed to overlap the fifth block 325 .

Each block 331 , 332 , 333 , 334 , 335 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 first block 331 and a second outer surface 332b facing the third block 333 .

The third block 333 has a third inner surface 333a facing the space 315 or the first Halbach arrangement 320 and a third outer surface opposite to the space 315 or the first Halbach arrangement 320 . (333b).

The fourth block 334 includes a fourth inner surface 334a facing the third block 333 and a fourth outer surface 334b facing the fifth block 335 .

The fifth block 335 has a fifth inner surface 335a facing the space 315 or the first Halbach arrangement 320 and a fifth outer surface opposite to the space 315 or the first Halbach arrangement 320 . (335b).

Each surface of the first to fifth blocks 331 , 332 , 333 , 334 , and 335 may be magnetized according to a predetermined rule.

Specifically, the first, second, and fifth inner surfaces 331a, 332a, and 335a and the third and fourth outer surfaces 333b and 334b may be magnetized to have the same polarity. In addition, the first, second, and fifth outer surfaces 331b, 332b, and 335b and the third and fourth inner surfaces 333a and 334a may be magnetized to have a polarity different from the polarity.

In this case, the first, second and fifth inner surfaces 331a, 332a, 335a and the third and fourth outer surfaces 333b and 334b are the third and fourth inner surfaces 323a and 324a of the first Halbach arrangement 320 . ) and the first, second and fifth outer surfaces 321b, 323b, and 325b may be magnetized to the same polarity.

Likewise, the first, second and fifth outer surfaces 331b, 332b, 335b and the third and fourth inner surfaces 333a, 334a are the first, second and fifth inner surfaces ( 321a, 323a, 325a) and the third and fourth outer surfaces 323b and 324b may be magnetized to 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 FIG. 11B .

Referring to FIG. 11B , the first and fifth inner surfaces 321a and 325a of the first Halbach array 320 are magnetized to the N pole, and the third inner surface 323a is magnetized to the S pole.

According to the above rule, the first and fifth inner surfaces 331a and 335a of the second Halbach arrangement 330 are magnetized to the S pole, and the third inner surface 333a is magnetized to the N pole.

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

In addition, between the third block 323 of the first Halbach arrangement 320 and the third block 333 of the second Halbach arrangement 330, the third inner surface 323a is formed from the third inner surface 333a. A magnetic field is formed in the direction it is directed.

Further, between the fifth block 325 of the first Halbach arrangement 320 and the fifth block 335 of the second Halbach arrangement 330, the fifth inner surface 325a to the fifth inner surface 335a A magnetic field is formed in the direction of

In addition, in the first Halbach arrangement 320 , a magnetic field in a direction from the first and fifth inner surfaces 321a and 325a toward the third inner surface 323a is formed. Similarly, in the second Halbach arrangement 330 , a magnetic field in a direction from the third inner surface 333a toward the first and fifth inner surfaces 331a and 335a is formed.

In the embodiment shown in (b) of FIG. 11 , the direction of the current is a direction from the first fixed contactor 22a to the movable contactor 43 and out to the second fixed contactor 22b.

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 left.

Accordingly, the arc path A.P in the vicinity of the first fixed contact 22a is also formed toward the 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 right.

Accordingly, the arc path A.P in the vicinity of the second fixed contact 22b is also formed toward the right.

Accordingly, in the arc path forming unit 300 according to the present embodiment, the arc paths A.P in the vicinity of each of the fixed contacts 22a and 22b are formed in opposite directions. Accordingly, the generated arcs do not meet each other. The arc can be extinguished and discharged effectively.

Accordingly, in the arc path forming unit 300 according to the present embodiment, the generated arc may proceed in a different direction without meeting each other inside the arc chamber 21 . Simultaneously, the generated arc can be moved in a direction away from the center C where the various components are located.

Accordingly, damage to each component of the DC relay 3 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 3 can be improved.

In particular, the arc path forming unit 300 according to the present embodiment can be more effectively applied to a one-direction relay.

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: 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
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
224: fourth block
224a: fourth inner surface
224b: fourth outer surface
225: fifth block
225a: fifth inner surface
225b: fifth outer surface
230: first magnet unit
231: first inner surface
232: first outer surface
240: second magnet unit
241: second inner surface
242: second outer surface
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: 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
324: fourth block
324a: fourth inner surface
324b: fourth outer surface
325: fifth block
325a: fifth inner surface
325b: fifth 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
334: fourth block
334a: fourth inner surface
334b: fourth outer surface
335: fifth block
335a: fifth inner
335b: fifth outer surface
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: 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)
AP: path of arc

Claims (17)

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, including a Halbach array to form a magnetic field in the space portion,
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,
A plurality of fixed contacts are provided, and the plurality of fixed contacts are arranged to be spaced apart from each other along the one direction,
The Halbach arrangement is
A plurality of blocks disposed side by side in the one direction, including a plurality of blocks formed of a magnetic material, are positioned adjacent to at least one surface of the first surface and the second surface, and a plurality of the fixed contacts along the other direction placed overlapping with
The Halbach arrangement is
a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and
It is disposed adjacent to the other one of the first surface and the second surface, including a second Halbach arrangement facing the first Halbach arrangement with the space portion therebetween,
arc path forming part. delete According to claim 1,
Among the surfaces of the first Halbach arrangement, a surface facing the second Halbach arrangement and a surface of the second Halbach arrangement facing the first Halbach arrangement are magnetized with different polarities,
arc path forming part. According to claim 1,
The first Halbach arrangement is,
a first block positioned to be biased toward any one of the third surface and the fourth surface;
a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and
a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block;
The second Halbach arrangement is,
a first block positioned to be biased toward any one of the third surface and the fourth surface;
a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and
A second block, a third block and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block,
arc path forming part. 5. The method of claim 4,
The first Halbach arrangement is,
One of the surfaces of the first block facing the second block and the third block facing the second block have the same polarity as a surface of the second block facing the second Halbach arrangement magnetized to
Among the faces of the third block, the faces facing the fourth block and the faces of the fifth blocks facing the fourth block, and the faces of the fourth blocks facing the second Halbach arrangement are the same It is magnetized with a polarity different from the polarity,
The second Halbach arrangement is,
Among the surfaces of the first block, a surface facing the second block and a surface of the third block facing the second block, and a surface of the second block facing the second Halbach arrangement are different from each other. polarized,
Among the faces of the third block, the faces facing the fourth block and the faces of the fifth blocks facing the fourth block, and the faces of the fourth blocks facing the second Halbach arrangement are the same polarized magnetized,
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, including a Halbach array to form a magnetic field in the space portion,
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,
A plurality of fixed contacts are provided, and the plurality of fixed contacts are arranged to be spaced apart from each other along the one direction,
The Halbach arrangement is
A plurality of blocks disposed side by side in the one direction, including a plurality of blocks formed of a magnetic material, are positioned adjacent to at least one surface of the first surface and the second surface, and a plurality of the fixed contacts along the other direction placed overlapping with
It is disposed adjacent to the other one of the first surface and the second surface, faces the Halbach arrangement with the space portion therebetween, and is biased toward any one of the third surface and the fourth surface. a first magnet portion disposed; and
It is disposed adjacent to the other one of the first surface and the second surface, faces the Halbach arrangement with the space portion therebetween, and is disposed on the other one of the third surface and the fourth surface. Containing a second magnet portion that is arranged biased,
arc path forming part. 7. The method of claim 6,
Among the surfaces of the Halbach arrangement, a surface facing the first magnet portion and a surface of the first magnet portion facing the Halbach arrangement are magnetized with different polarities,
Among the surfaces of the Halbach arrangement, a surface facing the second magnet portion and a surface of the second magnet portion facing the Halbach arrangement are magnetized with different polarities,
Among the surfaces of the Halbach arrangement, a surface facing the first magnet portion and a surface of the second magnet portion facing the Halbach arrangement are magnetized with the same polarity,
arc path forming part. 7. The method of claim 6,
The Halbach arrangement is
a first block positioned to be biased toward any one of the third surface and the fourth surface;
a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and
a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block;
The second block is arranged to face the first magnet part,
The fourth block is disposed to face the second magnet part,
arc path forming part. 9. The method of claim 8,
Among the surfaces of the second block, a surface facing the first magnet portion and a surface of the first magnet portion facing the second block are magnetized with different polarities,
Among the surfaces of the fourth block, a surface facing the second magnet part and a surface of the second magnet part facing the fourth block are magnetized with different polarities,
Among the surfaces of the second block, a surface facing the first magnet unit and a surface facing the second magnet unit among the surfaces of the fourth block are magnetized with different polarities,
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, including a Halbach array to form a magnetic field in the space portion,
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,
A plurality of fixed contacts are provided, and the plurality of fixed contacts are arranged to be spaced apart from each other along the one direction,
The Halbach arrangement is
A plurality of blocks disposed side by side in the one direction, including a plurality of blocks formed of a magnetic material, are positioned adjacent to at least one surface of the first surface and the second surface, and a plurality of the fixed contacts along the other direction placed overlapping with
The Halbach arrangement is
a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and
and a second Halbach arrangement disposed adjacent to the other of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween,
Among the plurality of blocks of the first Halbach arrangement, the number of blocks forming the magnetic field in one direction is greater than the number of blocks forming the magnetic field in the other direction,
arc path forming part. 11. The method of claim 10,
Among the surfaces of the first Halbach arrangement, a surface facing the second Halbach arrangement and a surface of the second Halbach arrangement facing the first Halbach arrangement are magnetized with different polarities,
arc path forming part. 11. The method of claim 10,
The first Halbach arrangement is,
a first block positioned to be biased toward any one of the third surface and the fourth surface;
a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and
a second block, a third block, and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block;
The second Halbach arrangement is,
a first block positioned to be biased toward any one of the third surface and the fourth surface;
a fifth block positioned to be biased toward the other one of the third surface and the fourth surface; and
A second block, a third block and a fourth block positioned between the first block and the fifth block and arranged side by side in order in a direction from the first block to the fifth block,
arc path forming part. 13. The method of claim 12,
The first Halbach arrangement is,
One of the surfaces of the first block facing the second Halbach arrangement, one of the surfaces of the second block facing the first block, one of the surfaces of the fourth block facing the fifth block and the fifth Among the faces of the block, the faces facing the second Halbach arrangement are magnetized with the same polarity,
Among the surfaces of the second block, a surface facing the third block, a surface of the fourth block facing the third block, and a surface of the third block facing the second Halbach arrangement have the same polarity. magnetized with a polarity different from that of
The second Halbach arrangement is,
One of the surfaces of the first block facing the second Halbach arrangement, one of the surfaces of the second block facing the first block, one of the surfaces of the fourth block facing the fifth block and the fifth Among the faces of the block, the face facing the second Halbach arrangement is magnetized with the different polarity,
Among the surfaces of the second block, a surface facing the third block, a surface of the fourth block facing the third block, and a surface of the third block facing the second Halbach arrangement have the same polarity. magnetized with
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;
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, including a Halbach arrangement to form a magnetic field in the space portion,
The space portion is formed to have a length in one direction longer than a 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
A plurality of blocks disposed side by side in the one direction, including a plurality of blocks formed of a magnetic material, are positioned adjacent to at least one surface of the first surface and the second surface, and a plurality of the fixed contacts along the other direction placed overlapping with
The Halbach arrangement is
a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and
and a second Halbach arrangement disposed adjacent to the other of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween,
Among the surfaces of the first Halbach arrangement, a surface facing the second Halbach arrangement and a surface of the second Halbach arrangement facing the first Halbach arrangement are magnetized with different polarities,
DC relay. delete 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;
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, including a Halbach arrangement to form a magnetic field in the space portion,
The space portion is formed to have a length in one direction longer than a 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
A plurality of blocks disposed side by side in the one direction, including a plurality of blocks formed of a magnetic material, are positioned adjacent to at least one surface of the first surface and the second surface, and a plurality of the fixed contacts along the other direction placed overlapping with
It is disposed adjacent to the other one of the first surface and the second surface, faces the Halbach arrangement with the space portion therebetween, and is biased toward any one of the third surface and the fourth surface. a first magnet portion disposed; and
It is disposed adjacent to the other one of the first surface and the second surface, faces the Halbach arrangement with the space portion therebetween, and is disposed on the other one of the third surface and the fourth surface. It includes a second magnet portion that is arranged to be biased,
Among the surfaces of the Halbach arrangement, a surface facing the first magnet portion and a surface of the first magnet portion facing the Halbach arrangement are magnetized with different polarities,
Among the surfaces of the Halbach arrangement, a surface facing the second magnet portion and a surface of the second magnet portion facing the Halbach arrangement are magnetized with different polarities,
Among the surfaces of the Halbach arrangement, a surface facing the first magnet portion and a surface of the second magnet portion facing the Halbach arrangement are magnetized with the same polarity,
DC relay. 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;
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, including a Halbach arrangement to form a magnetic field in the space portion,
The space portion is formed to have a length in one direction longer than a 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
A plurality of blocks disposed side by side in the one direction, including a plurality of blocks formed of a magnetic material, are positioned adjacent to at least one surface of the first surface and the second surface, and a plurality of the fixed contacts along the other direction placed overlapping with
The Halbach arrangement is
a first Halbach arrangement disposed adjacent to any one of the first surface and the second surface; and
and a second Halbach arrangement disposed adjacent to the other of the first surface and the second surface and facing the first Halbach arrangement with the space portion therebetween,
Among the plurality of blocks of the first Halbach arrangement, the number of blocks forming the magnetic field in one direction is greater than the number of blocks forming the magnetic field in the other direction,
Among the surfaces of the first Halbach arrangement, a surface facing the second Halbach arrangement and a surface of the second Halbach arrangement facing the first Halbach arrangement are magnetized with different polarities,
DC relay.

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