WO2021141320A1

WO2021141320A1 - Electromagnetic contactor

Info

Publication number: WO2021141320A1
Application number: PCT/KR2020/019406
Authority: WO
Inventors: 장경훈; 김민석; 윤덕용
Original assignee: 엘에스일렉트릭 (주)
Priority date: 2020-01-10
Filing date: 2020-12-30
Publication date: 2021-07-15
Also published as: CN114946005A

Abstract

An electromagnetic contactor is disclosed. An electromagnetic contactor according to an embodiment of the present invention comprises a cover frame including a frame coupling part. The frame coupling part comprises an extension part extending outwards and an insertion part positioned on the end portion of the extension part and formed to have a width wider than that of the extension part. In addition, an electromagnetic contactor according to an embodiment of the present invention comprises an insulation member detachably coupled to the electromagnetic contactor. The insulation member comprises multiple coupling protrusions, and the coupling protrusions undergo a shape change in the process of being inserted into the electromagnetic contactor, thereby storing elastic force, and are subjected to shape restoration by the stored elastic force when the insertion is completed. Accordingly, respective components of the electromagnetic contactor can be easily coupled to the electromagnetic contactor and the coupling state thereof can be stably maintained as well.

Description

magnetic contactor

The present invention relates to an electromagnetic contactor, and more particularly, to an electromagnetic contactor having a structure in which each component of the electromagnetic contactor is easily coupled and is not arbitrarily separated.

The magnetic contactor is provided between the power source and the load, and is used to prevent the load from being damaged by overcurrent.

The electromagnetic contactor includes a coil and a movable core. When a current is applied to the magnetic contactor, the movable core including the movable contact is attracted toward the fixed core by the magnetic field formed by the coil.

When the fixed contact and the movable contact are in contact, the magnetic contactor can be energized with the outside. Accordingly, the power source, the magnetic contactor and the load can be energized.

A plurality of phase currents may be passed through the electromagnetic contactor. For example, a three-phase current including a U-phase, a V-phase and a W-phase may be energized in the magnetic contactor. Alternatively, a three-phase current including an R-phase, an S-phase and a T-phase may be energized through the electromagnetic contactor.

The currents in each of these phases must be electrically spaced apart so that they do not pass through each other. This is because, when the currents of each phase electrically interfere with each other, a safety accident such as a short circuit may occur.

In addition, when there are a plurality of wires provided with the electromagnetic contactors, a plurality of the electromagnetic contactors may be provided and disposed adjacent to each other. In this situation, the electromagnetic contactors adjacent to each other must also be electrically spaced apart.

This is to prevent the current flowing through the other magnetic contactors from being affected by the current flowing through one of the magnetic contactors.

Korean Patent Document No. 10-1094038 discloses an earth leakage breaker. Specifically, an earth leakage breaker for preventing interference between currents of each phase passing through the earth leakage breaker by forming a barrier between phases on the main body cover is disclosed.

However, in this type of earth leakage breaker, since the interphase barrier is integrally formed in the body cover, there is a limitation in that it is difficult to maintain only the interphase barrier. Furthermore, the earth leakage breaker according to the prior literature has a structure in which the size between the phase barrier and the body cover is influenced by each other, since the interphase barrier is fixed to the main body cover. Accordingly, the degree of freedom in design may be reduced.

Korean Patent Document No. 10-0527823 discloses a circuit breaker. Specifically, it discloses a circuit breaker including an insulating barrier that is coupled to the case to adjust the length, the length exposed to the outside can be adjusted.

However, this type of earth leakage breaker has a limitation in that it proposes only a method for varying the length of the insulation barrier exposed to the outside of the case. That is, the insulating barrier coupled to the case does not suggest a method for stably maintaining the coupled state.

An object of the present invention is to provide an electromagnetic contactor having a structure capable of solving the above-described problems.

First, an object of the present invention is to provide an electromagnetic contactor including a cover frame having a structure that can be easily coupled to and separated from the electromagnetic contactor.

In addition, an object of the present invention is to provide an electromagnetic contactor including a cover frame having a structure in which a state coupled to the electromagnetic contactor can be stably maintained.

Another object of the present invention is to provide an electromagnetic contactor including a cover frame having a structure that can prevent damage to a member coupled to the electromagnetic contactor.

Another object of the present invention is to provide an electromagnetic contactor including a cover frame having a structure in which electrical interference may not occur between currents of different phases energized in the electromagnetic contactor.

In addition, when a plurality of electromagnetic contactors are provided and disposed adjacent to each other, an object of the present invention is to provide an electromagnetic contactor including a cover frame having a structure in which electrical interference does not occur between the respective electromagnetic contactors.

In addition, an object of the present invention is to provide an electromagnetic contactor including a cover frame having a structure in which a user may not be injured by an arc generated in the electromagnetic contactor.

Another object of the present invention is to provide an electromagnetic contactor including an insulating member having a structure that can be easily coupled to the electromagnetic contactor.

Another object of the present invention is to provide an electromagnetic contactor including an insulating member having a structure that can be easily coupled to the electromagnetic contactor even after other components of the electromagnetic contactor are coupled.

Another object of the present invention is to provide an electromagnetic contactor including an insulating member having a structure in which a state coupled to the electromagnetic contactor can be stably maintained.

Another object of the present invention is to provide an electromagnetic contactor including an insulating member having a structure in which electrical interference may not occur between currents of different phases energized to the electromagnetic contactor.

In addition, after being coupled to the electromagnetic contactor, an object of the present invention is to provide an electromagnetic contactor including an insulating member having a structure that can prevent injury to a user.

In order to achieve the above object, an electromagnetic contactor according to an embodiment of the present invention, a fixed contact; a movable contact positioned adjacent to the fixed contact and configured to be in contact with or spaced apart from the fixed contact; a support frame for supporting the fixed contact; and a cover frame detachably coupled to the support frame and covering one side of the support frame, wherein the cover frame includes: a plurality of outer surfaces spaced apart from each other and disposed to face; a plurality of ribs positioned between the outer surfaces; and a frame coupling part extending from one side of the rib part and inserted and coupled to the support frame, wherein the frame coupling part includes an extension part extending from the one side of the rib part and having a predetermined width; and an insertion portion positioned at an end of the extension portion and having a greater width than the extension portion.

In addition, the extension portion may be formed to have a width smaller than a thickness of the rib portion, and the insertion portion may be formed to have a width greater than a thickness of the rib portion.

In addition, the insertion part is formed in a square plate shape, and at least one of the corners of the insertion part may be chamfered.

In addition, the outer surface, the first surface is formed in a plate-shaped length in one direction is longer than the length in the other direction; and a second surface and a third surface extending from each end of the first surface in the one direction and disposed to face each other, wherein the rib portion includes, between the second surface and the third surface, the second surface It may be disposed to be spaced apart from the second surface and the third surface, respectively.

In addition, the second surface and the third surface are formed to extend in a direction away from the first surface, and the rib part is continuous with the first surface, and the second surface and the third surface are formed in a direction away from the first surface. It may be formed to extend by a length shorter than the third surface.

Also, the frame coupling part may be positioned adjacent to an end of the rib part at one edge of the rib part facing the electromagnetic contactor.

In addition, between the second surface and the rib portion and between the rib portion and the third surface, the first surface, the second surface, and the rib portion, the first surface, the third surface, and the rib portion An arc space portion surrounded by the portion is formed, and the arc space portion may communicate with an arc discharge hole of the electromagnetic contactor.

In addition, a fourth surface extending from an end opposite to the electromagnetic contactor among ends of the first surface in the other direction, the fourth surface extending between the second surface and the third surface, , It may be continuous with the other end opposite to one side of the rib portion where the frame coupling portion is located.

In addition, the support frame may include: a first groove recessed from one side facing the cover frame; and a first protrusion and a second protrusion protruding from a surface surrounding the first groove from both sides and facing each other.

In addition, the first protrusion and the second protrusion extend in a direction opposite to the cover frame from the one side surface of the support frame, and the depth at which the first groove is recessed is determined by the first protrusion and the first protrusion. The second protrusion may be formed to be longer than the extended length.

In addition, the support frame may include a second groove which is a space formed between the first protrusion and the second protrusion; and an accommodating groove communicating with the second groove, each of which is a space formed on one side of the first and second projections opposite to the cover frame, wherein the extension portion of the frame coupling portion is in the second groove. is inserted, and the insertion portion of the frame coupling portion may be inserted into the receiving groove.

In addition, a height of the insertion part of the frame coupling part may be formed to be less than or equal to a height of the first groove.

In addition, one side of the first groove is formed to be open, the other side opposite to the one side is closed, and, in the insertion part, an edge of the first groove facing the other side may be chamfered.

In addition, the electromagnetic contactor according to another embodiment of the present invention, a fixed contact fixed to the support frame; a movable contact positioned adjacent to the fixed contact and configured to be in contact with or spaced apart from the fixed contact; an arc box positioned inside and including a space for accommodating the fixed contact and the movable contact, and an arc discharge hole communicating with the space and the outside; and a cover frame detachably coupled to the arc box and covering one side of the arc box, wherein the cover frame includes: a first surface formed in a plate shape having a length in one direction longer than a length in the other direction; and an arc box fastening portion extending from one end of the first surface in the other direction toward the arc box and coupled to the arc discharge hole.

In addition, the arc box fastening portion, an extension portion extending from the one end of the first surface; an insertion part positioned at an end of the extension part and inserted and coupled to the arc discharge hole; and a fastening part located at an end of the insertion part, extending radially outward with respect to the extending direction of the extension part, and contacting a corner surrounding the arc discharge hole.

In addition, the electromagnetic contactor according to another embodiment of the present invention, a fixed contact; a movable contact positioned adjacent to the fixed contact and configured to be in contact with or spaced apart from the fixed contact; a support frame for supporting the fixed contact; and an insulating member detachably coupled to the support frame, wherein the insulating member includes: a plate portion formed in a plate shape; a coupling edge forming one edge of the plate part; and a coupling protrusion provided at the coupling edge and detachably inserted and coupled to the support frame, wherein the coupling protrusion extends from the one side of the plate part toward the support frame and has an extension having a predetermined width. ; an insertion part positioned at an end of the extension part and extending toward the support frame; and a fastening part protruding from one side of the insertion part and having a width greater than that of the extension part,

In addition, the plate portion may be formed to have a predetermined thickness, and the extension portion may be formed to have a width smaller than a thickness of the plate portion.

In addition, the fastening part may protrude in a thickness direction of the plate part, and an end of one side of the fastening part may be located more outside than a surface of one side of the plate part in the thickness direction of the plate part.

In addition, the fastening portion may protrude in a thickness direction of the plate portion and extend at a predetermined angle with the insertion portion.

In addition, the insertion part may be formed such that a cross-sectional area thereof is reduced in a direction away from the extension part, and the fastening part may be positioned adjacent to a point where the extension part and the insertion part are continuous.

In addition, a plurality of the coupling protrusions may be provided, and the plurality of coupling protrusions may be disposed to be spaced apart from each other in a direction in which the coupling edges extend.

In addition, the plurality of coupling protrusions, first coupling protrusions that are located biased to one side of the coupling edge; a second coupling protrusion positioned adjacent to the first coupling protrusion and biased toward the other side opposite to the one side of the coupling edge; and a third coupling protrusion positioned adjacent to the second coupling protrusion, and positioned to be biased toward the one side of the coupling edge.

In addition, the first coupling portion of the first coupling protrusion protrudes in a direction toward the one side of the coupling edge, and the second coupling portion of the second coupling protrusion protrudes in a direction toward the other side of the coupling edge, The third coupling part of the third coupling protrusion may protrude in a direction toward the one side of the coupling edge.

In addition, in the plate part, each end of the edge of the other side opposite to the coupling edge may be chamfered (tapered).

In addition, the support frame may include: a first groove recessed from one side facing the insulating member; and a first protrusion and a second protrusion protruding from a surface surrounding the first groove from both sides and facing each other.

In addition, the first protrusion and the second protrusion extend in a direction opposite to the insulating member from the one side surface of the support frame, and the depth at which the first groove is recessed is determined by the first protrusion and the first protrusion. The second protrusion may be formed to be longer than the extended length.

In addition, the support frame may include a second groove which is a space formed between the first protrusion and the second protrusion; and receiving grooves respectively communicating with the second grooves and being spaces formed on one side of the first and second projections opposite to the insulating member, wherein the extended portion of the insulating member is disposed in the second groove. is inserted, and the insertion portion and the fastening portion of the insulating member may be inserted into the receiving groove.

In addition, the fastening part may be disposed to overlap the first protrusion and the second protrusion along a direction in which the insulating member is inserted into the support frame.

In addition, a plurality of the fixed contact and the insulating member may be provided, respectively, and the plurality of the insulating members may be respectively positioned between the plurality of the fixed contacts.

In addition, the insulating member and the support frame may be hook-coupled.

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

First, the cover frame is provided with a frame coupling portion. The frame coupling part is inserted and coupled to the cover coupling part provided in the support frame of the electromagnetic contactor. In addition, the cover frame is provided with an arc box coupling portion. The arc box coupling portion is coupled through the arc discharge hole formed in the arc box of the electromagnetic contactor.

Accordingly, the cover frame can be coupled to the support frame and the arc box in the form of insertion and penetration. Accordingly, the cover frame can be easily coupled to the electromagnetic contactor.

In addition, the frame coupling portion includes an extension portion and an insertion portion. The insertion portion is positioned at an end of the extension portion and is formed to have a greater width than the extension portion. The cover coupling part into which the frame coupling part is inserted includes a second groove into which the extended part is inserted and a receiving groove into which the insertion part is accommodated. The second groove and the accommodating groove communicate with each other, and the width of the second groove is formed to be smaller than the width of the accommodating groove.

Accordingly, the insertion portion inserted into the receiving groove is not drawn out through the second groove, and can be drawn out only through the receiving groove or an opening formed at the upper side of the first groove. Accordingly, a state in which the cover frame is coupled to the electromagnetic contactor may be stably maintained.

In addition, the insertion portion is provided with a tapered portion formed through chamfering. The tapered portion is formed on the lower side of the insert, that is, at the edge of the portion in contact with the support frame. The impact generated by the swinging of the support frame may be distributed by the tapered portion having a larger surface area.

Accordingly, the rigidity of the frame coupling portion inserted into the cover coupling portion may be reinforced. Accordingly, even if the electromagnetic contactor is operated, damage and breakage of the frame coupling portion can be minimized.

In addition, the cover coupling portion includes a plurality of ribs. When the cover coupling portion is coupled to the support frame, the plurality of ribs are respectively positioned between the plurality of fixed contact portions. The plurality of ribs may be formed of an insulating material to physically and electrically separate the plurality of fixed contact portions.

Accordingly, currents of different phases conducted to the plurality of fixed contact portions may be physically and electrically separated from each other by the plurality of ribs. Accordingly, no electrical interference is generated between the respective currents.

In addition, the cover coupling portion includes an outer surface. When the cover coupling portion is coupled to the support frame, a portion of the outer surface is disposed to surround the fixed contact portion on both sides of the support frame. The outer surface may be formed of an insulating material.

Accordingly, even when a plurality of electromagnetic contactors are provided and disposed adjacent to each other, each of the electromagnetic contactors may be physically and electrically spaced apart from each other by the outer surface. Accordingly, no electrical interference is generated between the respective electromagnetic contactors.

In addition, the cover coupling portion includes an arc space portion that is a space formed surrounded by the outer surface and the outer surface. The arc space may be in communication with the arc discharge hole, and the arc generated inside the arc box may be introduced. In addition, the path of the arc discharged from the arc discharge hole is blocked by the outer surface surrounding the arc space.

Accordingly, the arc discharged from the arc discharge hole is discharged through the opening after staying in the arc space for a predetermined time. Accordingly, since the arc is discharged to the external space after the temperature and pressure have sufficiently dropped, the safety of the user can be improved.

In addition, the insulating member is detachably inserted and coupled to the support frame. The support frame is provided with a plate coupling portion having a space formed therein. A plurality of coupling protrusions are formed on the insulating member. Each coupling protrusion is detachably inserted into the plate coupling portion. The coupling protrusion is formed of a material having a predetermined elasticity. In addition, the engaging protrusion is formed such that its cross-sectional area is reduced in the direction toward the plate engaging portion.

Accordingly, the engaging projection is compressed and deformed in shape, and can be easily inserted into the plate engaging portion.

In addition, plate coupling portions are formed on both sides of the support frame facing the insulating member. The plate coupling portion may be exposed to the outside from both sides of the support frame. Even when the arc box is coupled to the support frame, the plate coupling portion remains exposed on both sides of the support frame.

Therefore, regardless of whether the arc box is coupled to the support frame, the insulating member may be detachably inserted and coupled to the plate coupling part.

In addition, a plurality of coupling protrusions are provided, and are disposed to be spaced apart from each other in a direction in which coupling edges extend. Each engaging protrusion includes an extension extending from the engaging edge, an insertion portion positioned at an end of the extension, and a fastening portion. The fastening part protrudes in the width direction of the coupling protrusion.

The plate coupling portion is formed to have a narrow width and includes a second groove through which the extension is inserted and a receiving groove formed to have a wider width and into which the insertion portion and the fastening portion are inserted. The width of the second groove is greater than or equal to the width of the extension, but is formed to be less than the distance between the respective fastening parts of the respective coupling protrusions. The receiving groove is formed to be greater than or equal to the distance between each fastening portion of each engaging projection.

Accordingly, the plurality of engaging projections are deformed to be bent toward each other and pass through the second groove. When the plurality of engaging projections are accommodated in the receiving groove, the shape is deformed and the plurality of engaging projections are restored to their original shapes by the stored restoring force.

In this case, each fastening part is disposed to overlap the first and second protrusions of the plate coupling part along a direction in which the insulating member is inserted. That is, the coupling protrusion and the plate coupling portion are hook-coupled. Therefore, the insulating member is not arbitrarily drawn out from the support frame unless an external force for shape-deforming the engaging projections toward each other is applied.

Accordingly, the coupling state between the insulating member and the support frame may be stably maintained.

In addition, a plurality of insulating members may be provided. The plurality of insulating members may be respectively positioned between the plurality of fixed contact portions. The plate portion of the insulating member extends between the lower end of the support frame on the upper side of the arc box.

Accordingly, the plurality of fixed contact portions are physically and electrically spaced apart from each other. Accordingly, electrical interference does not occur between currents of different phases energized in the magnetic contactor.

In addition, the edge of one side opposite to the coupling edge of the edge of the plate portion, that is, the edge exposed to the outside, the vertex portion is chamfered.

Accordingly, a user positioned adjacent to the electromagnetic contactor is not injured by the sharp edge of the plate portion.

1 is a perspective view showing an electromagnetic contactor according to an embodiment of the present invention.

Fig. 2 is a front view showing the electromagnetic contactor of Fig. 1;

Fig. 3 is a cross-sectional view taken along line A-A showing the internal configuration of the electromagnetic contactor of Fig. 1;

4 is a perspective view illustrating an upper frame and an arc box provided in the electromagnetic contactor of FIG. 1 .

Fig. 5 is a front view showing the upper frame and arc box of Fig. 4;

6 is a perspective view illustrating an arc chamber and an upper frame provided in the electromagnetic contactor of FIG. 1 .

7 is a perspective view illustrating an upper frame provided in the electromagnetic contactor of FIG. 1 .

FIG. 8 is a plan view showing the upper frame of FIG. 7 .

Fig. 9 is a front view showing the upper frame of Fig. 7;

10 is a perspective view illustrating a cover frame provided in the electromagnetic contactor of FIG. 1 .

11 is a perspective view illustrating the cover frame of FIG. 10 from another angle;

12 is a plan view illustrating the cover frame of FIG. 10 .

Fig. 13 is a rear view showing the cover frame of Fig. 10;

Fig. 14 is a side view showing the cover frame of Fig. 10;

15 is a perspective view illustrating a process in which the upper frame of FIG. 7 and the cover frame of FIG. 10 are coupled.

16 is a plan view illustrating a state in which the upper frame of FIG. 7 and the cover frame of FIG. 10 are coupled.

17 is a perspective view illustrating a process in which the arc box is coupled to the upper frame of FIG. 7 and the cover frame of FIG. 10 .

18 is a perspective view illustrating an electromagnetic contactor according to another embodiment of the present invention.

Fig. 19 is a front view showing the electromagnetic contactor of Fig. 18;

Fig. 20 is a cross-sectional view showing the internal configuration of the electromagnetic contactor of Fig. 18;

21 is a perspective view illustrating an upper frame and an arc box provided in the electromagnetic contactor of FIG. 18 .

Fig. 22 is a front view showing the upper frame and arc box of Fig. 21;

23 is a perspective view illustrating an arc chamber and an upper frame provided in the electromagnetic contactor of FIG. 18 .

24 is a perspective view illustrating an upper frame provided in the electromagnetic contactor of FIG. 18 .

Fig. 25 is a plan view showing the upper frame of Fig. 24;

Fig. 26 is a front view showing the upper frame of Fig. 24;

27 is a perspective view illustrating an insulating member provided in the electromagnetic contactor of FIG. 18 .

Fig. 28 is a perspective view showing the insulating member of Fig. 27 from another angle;

Fig. 29 is a front view showing the insulating member of Fig. 27;

Fig. 30 is a side view showing the insulating member of Fig. 27;

Fig. 31 is a rear view showing the insulating member of Fig. 27;

32 is a perspective view illustrating a process in which the upper frame of FIG. 24 and the insulating member of FIG. 10 are coupled.

33 is a plan view illustrating a process in which the upper frame of FIG. 24 and the insulating member of FIG. 10 are coupled.

34 is a plan view illustrating a state in which the upper frame of FIG. 24 and the insulating member of FIG. 10 are coupled.

Hereinafter, an electromagnetic contactor 10 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 is understood that the other component may be directly connected or connected to the other component, but 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 no other element is present 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 “electric current” used in the following description refers to a state in which two or more members are electrically connected. In an embodiment, energization may be used to mean a state in which current flows between two or more members or an electrical signal is transmitted.

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 FIGS. 1 and 18 .

2. Description of the configuration of the electromagnetic contactor 10 according to an embodiment of the present invention

1 to 6 , the electromagnetic contactor 10 according to an embodiment of the present invention includes a frame 100 , a driving unit 200 , a movable contact unit 300 , a fixed contact unit 400 , and an arc extinguishing unit. (500).

In addition, referring further to FIGS. 7 to 14 , the electromagnetic contactor 10 according to an embodiment of the present invention further includes a support frame 600 and a cover frame 700 . The cover frame 700 is detachably coupled to the support frame 600 and the arc extinguishing unit 500 to prevent interference between currents in each phase and protect the user.

Hereinafter, each configuration of the electromagnetic contactor 10 according to an embodiment of the present invention will be described with reference to the accompanying drawings, but the support frame 600 and the cover frame 700 will be described as separate clauses.

(1) Description of the frame 100

1 to 3 , the electromagnetic contactor 10 according to an embodiment of the present invention includes a frame 100 .

The frame 100 forms the outer shape of the electromagnetic contactor 10 . A space is formed inside the frame 100 . Various components for operating the electromagnetic contactor 10 may be mounted in the space. In an embodiment, the driving unit 200 may be accommodated in the space. Accordingly, the frame 100 may be referred to as a “housing”.

The space is surrounded by the outer surface of the frame 100 . That is, the space is physically separated from the outside. Accordingly, each component accommodated in the space is not arbitrarily exposed to the outside.

The space is energized with the outside. Specifically, the space may be electrically connected to an external power source or load. Accordingly, a current may be applied to the coil (not shown) accommodated in the space.

In the illustrated embodiment, the frame 100 has a rectangular cross section and is formed to extend in the vertical direction. The frame 100 may be formed in any shape capable of accommodating various components therein.

The frame 100 is located below the arc extinguishing unit 500 . The frame 100 is coupled to the arc extinguishing unit 500 by the support frame 600 . For the coupling, a fastening member (not shown) such as a screw member may be provided.

The frame 100 is positioned below the support frame 600 . The frame 100 is coupled to the support frame 600 . For the coupling, a fastening member (not shown) such as a screw member may be provided.

The frame 100 includes a base part 110 and a lower frame part 120 .

The base part 110 forms the lower side of the frame 100 . The base part 110 is a part in which the frame 100 is in contact with the external environment. In one embodiment, the base part 110 may be fixed to the floor of the environment in which the electromagnetic contactor 10 is provided.

In the illustrated embodiment, the base part 110 is provided in a rectangular plate shape. The base part 110 may be formed in any shape capable of supporting the lower frame part 120 .

The lower frame part 120 is positioned above the base part 110 .

The lower frame part 120 accommodates some components of the electromagnetic contactor 10 in a space formed therein. In an embodiment, the driving unit 200 may be accommodated in the lower frame unit 120 .

The lower frame part 120 is located above the base part 110 . The lower frame part 120 is supported by the base part 110 . In an embodiment, the lower frame part 120 may be fixedly coupled to the base part 110 .

The lower frame part 120 is located below the support frame 600 . The lower frame part 120 supports the support frame 600 . The space inside the lower frame part 120 communicates with the space inside the support frame 600 .

The lower frame part 120 may be coupled to the support frame 600 by a fastening member (not shown) such as a screw member. The shape of the cross-section of the lower frame part 120 may be the same as the shape of the cross-section of the support frame 600 .

Accordingly, when the lower frame unit 120 is coupled to the base unit 110 and the support frame 600 , the space inside the lower frame unit 120 is not arbitrarily exposed to the outside. Accordingly, arbitrary exposure of the components accommodated in the space inside the lower frame unit 120 can be prevented.

Although not shown, a coil (not shown) and a fixed core (not shown) may be provided inside the lower frame unit 120 . When a current is passed through the coil (not shown), the fixed core (not shown) is magnetized by a magnetic field formed by the coil (not shown).

Accordingly, the movable core 212 and the movable contact 320 connected thereto come into contact with the fixed contact 430 , and the electromagnetic contactor 10 may be energized.

(2) Description of the driving unit 200

Referring back to FIG. 3 , the electromagnetic contactor 10 according to an embodiment of the present invention includes a driving unit 200 .

The driving unit 200 generates a driving force for moving the movable contact unit 300 in a direction toward the fixed contact unit 400 or in a direction away from the fixed contact unit 400 .

In the illustrated embodiment, the driving unit 200 is partially accommodated in the inner space of the lower frame unit 120 . The remaining part of the driving unit 200 is accommodated in the arc box 520 of the arc extinguishing unit 500 .

The driving unit 200 is movably accommodated in the inner space of the lower frame unit 120 and the support frame 600 . Specifically, the driving unit 200 is accommodated in the lower frame unit 120 and the support frame 600 to be elevating. In the illustrated embodiment, the driving unit 200 may be moved in the vertical direction.

The driving unit 200 includes a cross bar 210 and an elastic member 220 .

The crossbar 210 is accommodated in the inner space of the lower frame part 120 and the support frame 600 to be movable in the vertical direction.

The movable contact part 300 is connected to the crossbar 210 . The movable contact part 300 may be moved in the vertical direction together with the crossbar 210 .

Accordingly, by the movement of the crossbar 210 , the movable contact unit 300 may be moved in a direction toward the fixed contact unit 400 or in a direction away from the fixed contact unit 400 .

Although not shown, a coil (not shown) and a fixed core (not shown) are provided under the crossbar 210 . When a current is passed through the coil (not shown), a magnetic field is formed to magnetize the fixed core (not shown).

The magnetic force generated by magnetizing the fixed core (not shown) attracts the movable core 212 . Accordingly, the movable contact part 300 may be moved toward the fixed contact part 400 .

In the illustrated embodiment, the crossbar 210 includes a plate-shaped portion extending in front, rear and left and right directions, and a pillar portion extending in the vertical direction from the plate-shaped portion.

The shape of the crossbar 210 may be formed in any shape that can be moved in the vertical direction together with the movable contact part 300 .

A plurality of the plate-shaped portion and the pillar portion of the crossbar 210 may be provided. A plurality of the plate-shaped portion and the pillar portion may be accommodated in the arc box 520 .

The plate-shaped portion and the pillar portion of the crossbar 210 may be changed according to the number of the movable contact portion 300 and the fixed contact portion 400 .

The crossbar 210 includes a contact point connection part 211 , a movable core 212 , and a fixing part 213 .

The movable contact point 310 of the movable contact unit 300 is connected to the contact point connection part 211 . In one embodiment, the movable contact bar 310 may be connected to the contact bar connecting portion 211 rotatably in the extending direction thereof.

The contact point connection part 211 is located above the crossbar 210 . Specifically, the contact point connecting portion 211 is positioned adjacent to the upper end of the pillar portion of the crossbar 210 .

A fixed contact part 400 and an arc extinguishing part 500 are positioned between the contact point connection part 211 and the plate-shaped part.

The movable contact part 300 connected to the contact point connection part 211 may be moved in a direction toward the fixed contact part 400 or in a direction away from the fixed contact part 400 . In addition, the arc generated by the movable contact 320 and the fixed contact 430 being spaced apart may be introduced into the arc extinguishing unit 500 to be extinguished.

The movable core 212 is moved in a direction toward the stationary core (not shown) or in a direction away from the stationary core (not shown). Accordingly, the crossbar 210 and the movable contact unit 300 connected thereto may be moved.

The movable core 212 may be provided in any shape that can be attracted by magnetic force. In one embodiment, the movable core 212 may be formed of a conductive material. In another embodiment, the movable core 212 may be provided with an electromagnet or a permanent magnet.

The movable core 212 is located below the plate-shaped portion of the crossbar 210 . Accordingly, the distance between the movable core 212 and the fixed core (not shown) is reduced, so that the magnetic force generated by the fixed core (not shown) can be effectively transmitted to the movable core 212 .

The fixing part 213 is located above the crossbar 210 . Specifically, the fixing portion 213 is located closer to the upper end of the pillar portion of the crossbar 210 than the contact-to-connection portion 211 . In an embodiment, the fixing part 213 may be located at an upper end of the pillar portion of the crossbar 210 .

The fixing unit 213 is coupled to the arc extinguishing unit 500 . The fixing unit 213 coupled to the arc extinguishing unit 500 may be exposed to the outside of the electromagnetic contactor 10 .

Accordingly, the crossbar 210 may be stably coupled to the arc extinguishing unit 500 . In addition, the crossbar 210 may be moved in the vertical direction with the fixing part 213 as an axis.

The elastic member 220 provides a restoring force for moving the crossbar 210 in a direction away from the fixed core (not shown), that is, upward in the illustrated embodiment. The elastic member 220 is positioned below the crossbar 210 .

Specifically, the crossbar 210 is moved in the direction toward the fixed core (not shown), that is, downward by the magnetic force generated by the fixed core (not shown). At this time, the crossbar 210 is moved downward while pressing the elastic member 220 .

Accordingly, while the crossbar 210 is moved and the movable contact 320 and the fixed contact 430 are in contact with each other, the elastic member 220 stores the restoring force by shape deformation.

When the overcurrent flows and the current flowing into the coil (not shown) is cut off, the magnetization state of the fixed core (not shown) is released. Accordingly, the magnetic attraction force applied to the movable core 212 is released.

At this time, the elastic member 220 applies a restoring force to the crossbar 210 in a direction away from the fixed core (not shown), that is, in a direction toward the upper side in the illustrated embodiment.

Accordingly, the crossbar 210 is moved in a direction away from the fixed core (not shown), and the contact state between the movable contact 320 and the fixed contact 430 may be released.

The elastic member 220 may be provided in any shape that is deformed in shape to store the restoring force, and transmit the stored restoring force to other members. In an embodiment, the elastic member 220 may be provided as a coil spring.

The elastic member 220 includes a first elastic member 221 and a second elastic member 222 .

The first elastic member 221 is provided on the crossbar 210 . Specifically, the first elastic member 221 is accommodated inside the pillar portion of the crossbar 210 .

The second elastic member 222 is located in the inner space of the lower frame part 120 . The second elastic member 222 is positioned below the crossbar 210 . The second elastic member 222 elastically supports the plate-shaped portion of the crossbar 210 .

A plurality of second elastic members 222 may be provided. In the illustrated embodiment, the second elastic member 222 is provided with one each on the front side and the rear side. In addition, the second elastic member 222 is provided on the left and right sides of the lower frame portion 120, respectively, a total of four are provided. The number of the second elastic members 222 may be changed.

When the crossbar 210 is moved downward, the first elastic member 221 and the second elastic member 222 are respectively pressed and store restoring force.

At this time, the magnitude of the restoring force stored by the first elastic member 221 and the second elastic member 222 is smaller than the magnitude of the magnetic attraction force exerted by the fixed core (not shown) on the movable core 212 .

Accordingly, in a state in which the fixed core (not shown) is magnetized, that is, in a state in which a current is passed through the coil (not shown), the elastic member 220 is compressed to store the restoring force may be maintained.

(3) Description of the movable contact part 300

Referring to FIG. 3 , the electromagnetic contactor 10 according to an embodiment of the present invention includes a movable contact unit 300 .

The movable contact unit 300 may be moved together with the crossbar 210 in a direction toward the fixed contact unit 400 or in a direction away from the fixed contact unit 400 .

The movable contact part 300 is accommodated in the space inside the arc box 520 . The movable contact unit 300 may be moved up and down in the space inside the arc box 520 .

The movable contact part 300 is connected to the crossbar 210 . Specifically, the movable contact part 300 is rotatably connected to the contact point connection part 211 of the crossbar 210 .

The movable contact unit 300 is located on one side of the fixed contact unit 400 , in the illustrated embodiment, on the upper side. When the movable contact part 300 is moved downward together with the crossbar 210 , the movable contact part 300 and the fixed contact part 400 may contact each other.

The movable contact part 300 is in contact with the fixed contact part 400 to be energized. When the movable contact 320 is in contact with the fixed contact 430 , the magnetic contactor 10 may be electrically connected to an external power source or load.

A plurality of movable contact units 300 may be provided. In the illustrated embodiment, the movable contact unit 300 is provided with three. This is due to the application of three-phase currents of R-phase, S-phase and T-phase or U-phase, V-phase and W-phase to the electromagnetic contactor 10 according to an embodiment of the present invention.

The number of movable contact parts 300 may be changed according to the number of phases of current applied to the electromagnetic contactor 10 .

The movable contact unit 300 includes a movable contact stand 310 and a movable contact 320 .

The movable contact unit 310 forms the body of the movable contact unit 300 . The movable contact point 310 is formed to extend in one direction, in the front-rear direction in the illustrated embodiment.

The extended length of the movable contact point 310 may be determined to correspond to a distance at which the first and second fixed contacts 413 and 432 are spaced apart.

The movable contact bar 310 is coupled to the crossbar 210 . Specifically, the movable contact point 310 is coupled to the contact point connecting portion 211 of the crossbar 210 . In one embodiment, the movable contact point 310 may be rotatably coupled to the contact point connection part 211 .

The movable contact point 310 may be formed of a conductive material. The current flowing through the fixed contact point 410 may flow into the movable contact point 310 through the movable contact point 320 .

In one embodiment, the movable contact point 310 may be formed of a material such as iron (Fe) or copper (Cu).

Adjacent to both ends in the longitudinal direction from which the movable contact bar 310 extends, the movable contact 320 is positioned. The movable contact point 310 is energized with the movable contact 320 .

The movable contact 320 is in contact with or spaced apart from the fixed contact 430 according to the movement of the crossbar 210 . When the movable contact 320 and the fixed contact 430 are in contact, the magnetic contactor 10 may be energized with an external power source or load.

When the movable contact 320 is spaced apart from the fixed contact 430 in the energized state, an arc is generated by the energized current. The generated arc is extinguished by the arc extinguishing unit 500 and may be discharged to the outside of the electromagnetic contactor 10 .

The movable contact 320 is coupled to the movable contact stand 310 . The movable contact 320 may be moved together with the movable contact 310 .

The movable contact 320 is energized with the movable contact stand 310 . The current flowing from the fixed contact point 430 to the movable contact point 320 may pass through the movable contact point 310 .

A plurality of movable contacts 320 may be provided. In the illustrated embodiment, the movable contact 320 includes a first movable contact 321 positioned on the front side and a second movable contact 322 positioned on the rear side.

The first movable contact 321 is located on one side of the direction in which the movable contact stand 310 extends, on the front side in the illustrated embodiment. In one embodiment, the first movable contact 321 may be located adjacent to the front end of the movable contact stand 310 .

The second movable contact 322 is located on the other side in the direction in which the movable contact stand 310 extends, on the rear side in the illustrated embodiment. In one embodiment, the second movable contact 322 may be located adjacent to the rear end of the movable contact stand 310 .

The position and number of movable contacts 320 may be changed according to the position and number of fixed contacts 430 .

A process in which a current is passed through the movable contact unit 300 by the above configuration will be described as follows.

First, a current flows into any one of the first movable contact 321 and the second movable contact 322 from the fixed contact 430 . The introduced current passes through the movable contact point 310 and flows into the fixed contact 430 through the other of the first movable contact 321 and the second movable contact 322 .

Accordingly, the magnetic contactor 10 may be energized with an external power source or load.

(4) Description of the fixed contact unit 400 and the arc extinguishing unit 500

3 to 6 , the electromagnetic contactor 10 according to an embodiment of the present invention includes a fixed contact unit 400 .

The fixed contact unit 400 is in contact with or spaced apart from the movable contact unit 300 to be energized by the movement of the movable contact unit 300 . That is, as can be seen from the name, the fixed contact unit 400 does not move.

The fixed contact unit 400 is accommodated in the inner space of the arc box 520 and the inner space of the support frame 600 . The fixed contact unit 400 is fixed to the inner space of the arc box 520 and the inner space of the support frame 600 .

The fixed contact part 400 is fixedly coupled to the support frame 600 . Specifically, the fixed contact bar 410 of the fixed contact unit 400 is through-coupled to both sides of the support frame 600, the contact bar through-holes formed through the front side and the rear side in the illustrated embodiment.

The fixed contact unit 400 is located on one side of the movable contact unit 300 , in the illustrated embodiment, on the lower side. When the movable contact part 300 is moved downward together with the crossbar 210 , the fixed contact part 400 and the movable contact part 300 may come into contact with each other.

The fixed contact unit 400 is electrically connected to the movable contact unit 300 . When the fixed contact 430 is in contact with the movable contact 320 , an external power source or load may be energized.

A plurality of fixed contact parts 400 may be provided. In the illustrated embodiment, three fixed contact parts 400 are provided. Each fixed contact portion 400 may be in contact with or spaced apart from the plurality of movable contact portions 300 , respectively.

This is due to the application of three-phase currents of R-phase, S-phase and T-phase or U-phase, V-phase and W-phase to the electromagnetic contactor 10 according to an embodiment of the present invention.

The number of fixed contact parts 400 may be changed according to the number of phases of current applied to the electromagnetic contactor 10 .

The fixed contact unit 400 includes a fixed contact bar 410 , a fixed contact block 420 , a fixed contact 430 , and a support frame 600 .

In the above configuration, the support frame 600 serves to fix the fixed contact unit 400 to the electromagnetic contactor 10 . Accordingly, the support frame 600 may be understood as being included in the frame 100 . However, in the following description, it will be described that the support frame 600 is included in the fixed contact unit 400 for convenience of description.

The fixed contact unit 410 forms the body of the fixed contact unit 400 . The fixed contact point 410 is formed to extend in one direction, in the front-rear direction in the illustrated embodiment.

The extended length of the fixed contact bar 410 is preferably formed so that one side is in energizable contact with the fixed contact block 420 , and the other side is protruded to the outside of the electromagnetic contactor 10 .

The fixed contact point 410 is electrically connected to an external power source or load. As will be described later, a plurality of fixed contact points 410 are provided. A power source may be connected to any one of the plurality of fixed contact points 410, and a load may be connected to the other to be energized.

The fixed contact point 410 is coupled to the support frame 600 . Specifically, the fixed contact bar 410 is through-coupled to the contact bar through-holes formed through each of the two surfaces facing each other among the surfaces of the support frame 600 .

In the illustrated embodiment, contact point through-holes are formed on the front side and rear side of the support frame 600 . Accordingly, the fixed contact bar 410 is coupled to the front side and the rear side of the support frame 600 , respectively.

The fixed contact point 410 may be formed of a conductive material. An external power source or load may be electrically connected to the fixed contact point 410 . The current introduced through the fixed contact point 410 may flow to the outside of the electromagnetic contactor 10 through the movable contact unit 300 .

In an embodiment, the fixed contact point 410 may be formed of a material such as iron (Fe) or copper (Cu).

A plurality of fixed contact points 410 may be provided. A current may flow into any one of the plurality of fixed contact points 410 and a current may flow out from the other.

In the illustrated embodiment, the fixed contact point 410 is provided with two including a first fixed contact point 411 and a second fixed contact point 412 .

The first fixed contact point 411 is located on one side of the pillar portion of the crossbar 210 , and on the front side in the illustrated embodiment. In other words, the first fixed contact point 411 is located on one side with respect to the lower side of the first movable contact point 321, and on the front side in the illustrated embodiment.

One side of the extension direction of the first fixed contact bar 411, the front side in the illustrated embodiment, protrudes to the outside of the electromagnetic contactor 10 by a predetermined length. A power source or a load is energably connected to a portion of the first fixed contact point 411 protruding to the outside.

The other side of the extension direction of the first fixed contact point 411, the rear side in the illustrated embodiment, extends to the lower side of the first movable contact point 321 . In other words, the other end of the first fixed contact bar 411 in the extending direction is positioned adjacent to the pillar portion of the crossbar 210 .

A first fixed contact block 421 is seated on the other side of the first fixed contact bar 411 . The first fixed contact bar 411 is in contact with the first fixed contact block 421 to be energized.

The second fixed contact bar 412 is located on the other side of the pillar portion of the crossbar 210 , in the illustrated embodiment, on the rear side. In other words, the second fixed contact point 412 is located on one side with respect to the lower side of the second movable contact point 322, the rear side in the illustrated embodiment.

One side in the extending direction of the second fixed contact bar 412 , in the illustrated embodiment, the rear side protrudes to the outside of the electromagnetic contactor 10 by a predetermined length. A power source or a load is energably connected to a portion of the second fixed contact point 412 protruding to the outside.

The other side in the extending direction of the second fixed contact point 412 , in the illustrated embodiment, the front side extends to the lower side of the second movable contact point 322 . In other words, the other end in the extending direction of the second fixed contact bar 412 is positioned adjacent to the pillar portion of the crossbar 210 .

A second fixed contact block 422 is seated on the other side of the second fixed contact bar 412 . The second fixed contact bar 412 is in contact with the second fixed contact block 422 to be energized.

The fixed contact block 420 is positioned between the fixed contact bar 410 and the fixed contact 430 . The fixed contact block 420 connects the fixed contact bar 410 and the fixed contact 430 to be energized.

In addition, the fixed contact block 420 may adjust the distance between the movable contact 320 and the fixed contact 430 . That is, according to the height of the fixed contact block 420 , the distance between the movable contact 320 and the fixed contact 430 may be adjusted.

The fixed contact block 420 is positioned adjacent to one end of the fixed contact bar 410 . Specifically, the fixed contact block 420 is positioned adjacent to one end of the fixed contact bar 410 facing the pillar portion of the crossbar 210 .

In other words, the fixed contact block 420 is positioned adjacent to each end of the plurality of fixed contact bars 410 facing each other.

The fixed contact block 420 is located on the upper side of the fixed contact stand 410 . The fixed contact block 420 is seated on the fixed contact stand 410 .

The fixed contact block 420 is extended to have a predetermined height. The extended length of the fixed contact block 420 may be determined according to a distance between the movable contact 320 and the fixed contact 430 . That is, the extended length of the fixed contact block 420 may be determined according to the distance at which the crossbar 210 can be moved up and down.

As described above, the distance between the movable contact 320 and the fixed contact 430 can be adjusted by adjusting the height of the fixed contact block 420 .

The fixed contact block 420 is in electrical contact with the fixed contact unit 410 . The current flowing into the fixed contact point 410 may flow to the fixed contact block 420 . In addition, the current flowing into the fixed contact block 420 may flow to the fixed contact block 410 .

The fixed contact block 420 is in electrical contact with the fixed contact 430 . The current flowing into the fixed contact 430 may flow to the fixed contact block 420 . In addition, the current flowing into the fixed contact block 420 may flow to the fixed contact 430 .

A plurality of fixed contact blocks 420 may be provided. The plurality of fixed contact blocks 420 may be electrically coupled to the plurality of fixed contact blocks 410 , respectively. In addition, the plurality of fixed contact blocks 420 may be electrically coupled to the plurality of fixed contacts 430 , respectively.

In the illustrated embodiment, the fixed contact block 420 includes two fixed contact blocks, including a first fixed contact block 421 and a second fixed contact block 424 .

The first fixed contact block 421 is energably in contact with the first fixed contact unit 411 . Specifically, the first fixed contact block 421 is located adjacent to one side of the first fixed contact unit 411, the rear end in the illustrated embodiment.

The first fixed contact 431 is seated on the first fixed contact block 421 . The first fixed contact block 421 is in electrical contact with the first fixed contact 431 .

The second fixed contact block 422 is electrically connected to the second fixed contact unit 412 . Specifically, the second fixed contact block 422 is located adjacent to one side of the second fixed contact unit 412, the front end in the illustrated embodiment.

The second fixed contact 432 is seated on the second fixed contact block 422 . The second fixed contact block 422 is in electrical contact with the second fixed contact 432 .

The fixed contact 430 is in contact with or spaced apart from the movable contact 320 . When the fixed contact 430 is in contact with the movable contact 320 , the fixed contact 400 and the movable contact 300 are energized. Accordingly, the magnetic contactor 10 may be energized with an external power source or load.

The fixed contact 430 is located above the fixed contact block 420 . The fixed contact 430 is seated on one side of the fixed contact block 420, an upper surface in the illustrated embodiment.

The fixed contact 430 is located below the movable contact part 300 . Specifically, the fixed contact 430 is located below the movable contact 320 . In an embodiment, the fixed contact 430 may be located directly below the movable contact 320 .

The fixed contact 430 is in electrical contact with the fixed contact block 420 . The current flowing into the fixed contact 430 may flow to the fixed contact block 420 . In addition, the current flowing into the fixed contact block 420 may flow to the fixed contact 430 .

A plurality of fixed contacts 430 may be provided. The plurality of fixed contact points 430 are respectively positioned in the plurality of fixed contact blocks 420 to conduct electricity with each fixed contact block 420 .

In the illustrated embodiment, two fixed contacts 430 are provided, including a first fixed contact 431 and a second fixed contact 432 .

The first fixed contact 431 is coupled to the first fixed contact block 421 . The first fixed contact 431 is in electrical contact with the first fixed contact block 421 .

The second fixed contact 432 is coupled to the second fixed contact block 422 . The second fixed contact 432 is in electrical contact with the second fixed contact block 422 .

The arc extinguishing unit 500 is configured to extinguish and discharge the arc generated by the movable contact unit 300 and the fixed contact unit 400 being spaced apart.

The arc extinguishing unit 500 is located above the support frame 600 . The arc extinguishing unit 500 may be supported by the support frame 600 .

The arc extinguishing unit 500 includes an arc chamber 510 and an arc box 520 .

The arc chamber 510 extinguishes the arc generated by the movable contact part 300 and the fixed contact part 400 being spaced apart. The arc chamber 510 is positioned adjacent to the fixed contact portion 400 . Specifically, the arc chamber 510 is positioned adjacent to each

fixed contact

431 , 432 .

Accordingly, when the movable contact unit 300 comes into contact with the fixed contact unit 400 and is separated from each other, the generated arc may extend toward the arc chamber 510 . The arc extending toward the arc chamber 510 may be extended and extinguished along a plurality of grids provided in the arc chamber 510 .

A plurality of arc chambers 510 may be provided. In the illustrated embodiment, two arc chambers 510 are provided in the front-rear direction and three pairs are provided in the left-right direction, for a total of six arc chambers 510 .

The number of arc chambers 510 may be changed according to the number of movable contact parts 300 and fixed contact parts 400 .

The arc chamber 510 is accommodated in the arc box 520 . The arc chamber 510 is also coupled to the arc box 520 .

The arc box 520 accommodates the arc chamber 510 , the movable contact part 300 and the fixed contact part 400 in the space formed therein. In addition, the arc box 520 may accommodate various components for operating the electromagnetic contactor 10 in the space.

That is, the arc box 520 functions as a kind of housing.

The arc box 520 is located on the upper side of the support frame 600 . The arc box 520 is coupled to the support frame 600 . In an embodiment, the arc box 520 may be coupled to the support frame 600 by a separate fastening member (not shown).

In the illustrated embodiment, the arc box 520 has a rectangular cross section and has a rectangular prism shape extending in the vertical direction. The shape of the arc box 520 is coupled to the support frame 600 , and may be provided in any shape capable of mounting components for the operation of the electromagnetic contactor 10 therein.

The arc box 520 may be formed of an insulating material. This is to prevent the components inside the arc box 520 from being arbitrarily energized with the outside. In one embodiment, the arc box 520 may be formed of a synthetic resin material.

The arc box 520 may be formed of a material with high rigidity. This is to prevent the arc box 520 from being damaged by the arc of high temperature and high pressure generated inside the arc box 520 . In one embodiment, the arc box 520 may be formed of reinforced plastic.

The arc box 520 includes a cover part 521 , an arc discharge hole 522 , and a frame coupling part 523 .

The cover part 521 forms the outside of the arc box 520 . In other words, the cover part 521 is a portion to which the arc box 520 is exposed to the outside. As described above, in the illustrated embodiment, the arc box 520 is provided in a rectangular prism shape.

Accordingly, the cover part 521 includes surfaces located on the upper side, the front side, the rear side, the left side, and the right side, except for the part open on the lower side.

Arc discharge hole 522 is formed through one side of the cover portion 521, the front side and the rear side in the illustrated embodiment.

The arc discharge hole 522 is a passage through which the arc generated in the inner space of the arc box 520 is extinguished through the arc chamber 510 and is discharged to the outside of the arc box 520 . The arc discharge hole 522 is formed through a pair of surfaces facing each other among the surfaces of the arc box 520 , respectively, on the front side and the rear side in the illustrated embodiment.

A plurality of arc discharge holes 522 may be formed. In the illustrated embodiment, the arc discharge hole 522 is formed three at each position where the current of each phase is energized. As described above, in the electromagnetic contactor 10 according to an embodiment of the present invention, three different phase currents may be conducted.

Accordingly, nine arc discharge holes 522 are formed on the front side and nine on the rear side, so that a total of 18 are formed. The number of arc discharge holes 522 may be changed.

The arc discharge hole 522 communicates with the inner space of the arc box 520 and the outside of the arc box 520 . Accordingly, the generated arc may be discharged to the outside of the arc box (520).

As will be described later, the cover frame 700 may be detachably coupled to the arc box 520 . At this time, the arc discharge hole 522 communicates with the arc space 730 of the cover frame 700 .

Accordingly, the arc extinguished and discharged is not discharged directly to the outer space of the arc box 520 , but is discharged after passing through the arc space 730 .

As a result, since the time required for the generated arc to be discharged to the external space is increased, it can be discharged to the external space after the arc is sufficiently extinguished. Accordingly, user safety may be improved.

The frame coupling part 523 is a part where the arc box 520 is coupled to the support frame 600 . The frame coupling portion 523 may be aligned with the arc box coupling portion 610 of the support frame 600 .

The frame coupling part 523 may be coupled to the arc box coupling part 610 by a separate coupling member (not shown). In an embodiment, the frame coupling part 523 may be screwed to the arc box coupling part 610 .

A plurality of frame coupling units 523 may be provided. In the illustrated embodiment, the frame coupling portion 523 is formed at the front side and rear side ends of the left and right sides of the arc box 520, respectively, a total of four are provided. The number of frame coupling parts 523 may be changed according to the number of arc box coupling parts 610 .

(5) Description of the support frame 600 according to an embodiment of the present invention

The electromagnetic contactor 10 according to an embodiment of the present invention includes a support frame 600 . The support frame 600 fixedly supports the fixed contact unit 400 so that the fixed contact unit 400 is not arbitrarily oscillated while the electromagnetic contactor 10 is energized with the outside.

Hereinafter, the support frame 600 according to an embodiment of the present invention will be described in detail with reference to FIGS. 7 to 9 .

A fixed contact part 400 is coupled to the support frame 600 . The fixed contact unit 400 may be fixedly coupled to the support frame 600 . The support frame 600 supports the fixed contact part 400 from the lower side.

The support frame 600 supports the arc extinguishing unit 500 . The upper space of the support frame 600 and the inner space of the arc extinguishing unit 500 communicate with each other. Accordingly, the movable contact unit 300 accommodated in the inner space of the arc extinguishing unit 500 may be moved in a direction toward the fixed contact unit 400 or in a direction away from the fixed contact unit 400 .

The frame 100 is positioned below the support frame 600 . In one embodiment, the support frame 600 and the frame 100 may be fastened by a coupling member (not shown) such as a screw.

An arc extinguishing unit 500 is positioned above the support frame 600 . The support frame 600 is coupled to the arc box 520 . Specifically, the arc box coupling portion 610 of the support frame 600 and the frame coupling portion 523 of the arc box 520 are coupled to each other.

In the illustrated embodiment, the support frame 600 has a rectangular cross section and has a rectangular pillar shape extending in the vertical direction. The shape of the support frame 600 may be changed according to the shape of the arc box 520 .

The support frame 600 includes an arc box coupling part 610 , a fixed contact receiving part 620 , a partition wall part 630 , and a cover coupling part 640 .

The arc box coupling unit 610 is a portion in which the support frame 600 is coupled to the arc box 520 . The arc box coupling portion 610 may be aligned with the frame coupling portion 523 .

The arc box coupling part 610 may be coupled to the frame coupling part 523 by a separate fastening material (not shown). In an embodiment, the arc box coupling unit 610 may be screwed to the frame coupling unit 523 .

A plurality of arc box coupling units 610 may be provided. In the illustrated embodiment, the arc box coupling portion 610 is formed on the left and right sides of the front side of the support frame 600, and the left and right sides on the rear side, respectively, a total of four are provided. The number of arc box coupling units 610 may be changed according to the number of frame coupling units 523 .

In one embodiment, each arc box coupling portion 610 may be located at both ends of the front side and both ends of the rear side, respectively.

The two arc box coupling parts 610 positioned on the front side and the two arc box coupling parts 610 positioned on the rear side are arranged to face each other.

In addition, a cover coupling part 640 is positioned between the two arc box coupling parts 610 on the front side. A cover coupling part 640 is also located between the two arc box coupling parts 610 located on the rear side.

The fixed contact receiving portion 620 is a space in which the fixed contact 400 is accommodated. After the fixed contact unit 400 is accommodated in the fixed contact receiving unit 620 , it may be fixedly coupled to the support frame 600 by a fastening member (not shown).

In addition, the arc chamber 510 may be positioned adjacent to the fixed contact accommodating part 620 in a state coupled to the arc box 520 .

The fixed contact accommodating part 620 is recessed from one side facing the arc box 520 . In the illustrated embodiment, the fixed contact accommodating part 620 is recessed in the upper side of the support frame 600 .

The fixed contact accommodating part 620 may be formed in a shape corresponding to the fixed contact stand 410 . In the illustrated embodiment, the fixed contact receiving portion 620 is formed to extend in the front-rear direction. In other words, the fixed contact accommodating part 620 is formed to have a length in the front-rear direction longer than a width in the left-right direction.

A plurality of fixed contact accommodating units 620 may be formed. The electromagnetic contactor 10 according to an embodiment of the present invention includes two fixed contact parts 400 for each phase. Accordingly, one fixed contact receiving portion 620 is formed on the front side and the rear side, respectively.

Furthermore, the fixed contact accommodating part 620 may be provided for each fixed contact part 400 through which a current of each phase is passed. Accordingly, a total of six fixed contact accommodating units 620 are formed. The number of the fixed contact accommodating parts 620 may be changed according to the number of phases of current passing through.

The partition wall 630 is positioned between the fixed contact accommodating parts 620 arranged in the width direction and in the left and right directions in the illustrated embodiment.

The partition wall part 630 is positioned between each fixed contact part 400 to physically space each fixed contact part 400 from each other. As the partition wall part 630 is provided, currents of different phases energized to each movable contact part 300 and the fixed contact part 400 may be physically and electrically separated from each other.

The barrier rib part 630 may be formed of an insulating material. This is to prevent electrical interference from occurring between the movable contact part 300 and the fixed contact part 400 positioned adjacent to each other. In an embodiment, the partition wall part 630 may be formed of a synthetic resin material.

The partition wall portion 630 is formed to extend in the direction in which the fixed contact bar 410 or the fixed contact receiving portion 620 extends. In the illustrated embodiment, the partition wall portion 630 is formed to extend in the front-rear direction.

The electromagnetic contactor 10 according to an embodiment of the present invention includes two fixed contact parts 400 for each phase. Accordingly, the partition wall portion 630 is formed to extend to the front side and the rear side. The front side end of the partition wall part 630 may be located adjacent to the front side surface of the support frame 600 . The rear side end of the partition wall part 630 may be located adjacent to the rear side surface of the support frame 600 .

A plurality of partition walls 630 may be provided. In the electromagnetic contactor 10 according to an embodiment of the present invention, three different phase currents may be conducted. Accordingly, two partition wall portions 630 are provided and positioned between three fixed contact receiving portions 620 disposed in the width direction.

In an embodiment, the rib part 720 and the frame coupling part 750 of the cover frame 700 may be positioned on an imaginary line extending the partition wall part 630 . Accordingly, currents of different phases are not electrically interfered with.

In an embodiment, the cover coupling part 640 may be positioned on an imaginary line extending the partition wall part 630 .

The cover coupling part 640 is a part where the cover frame 700 is coupled to the support frame 600 . The support frame 600 may be detachably inserted and coupled to the cover coupling part 640 .

A plurality of cover coupling portions 640 may be formed. In the illustrated embodiment, the cover coupling part 640 is provided with a total of two, including a first cover coupling part 640a positioned on the left and a second cover coupling part 640b positioned on the right side.

The first cover coupling part 640a and the second cover coupling part 640b are disposed to be spaced apart from each other. The frame coupling part 750 of the cover frame 700 is inserted and coupled to the first cover coupling part 640a and the second cover coupling part 640b, respectively.

The first cover coupling part 640a and the second cover coupling part 640b are different from each other in the arrangement position, and other shapes and structures are the same. Accordingly, the first cover coupling part 640a and the second cover coupling part 640b will be collectively referred to as the cover coupling part 640 .

The cover coupling part 640 may be formed on both sides of the support frame 600 facing each other. In the illustrated embodiment, the cover coupling portion 640 is formed on the front side and the rear side of the support frame 600 facing each other, respectively.

Accordingly, a total of four cover coupling parts 640 are formed. Hereinafter, for convenience of description, each direction will be described with reference to the cover coupling portion 640 positioned on the front side.

The frame coupling part 750 is inserted and coupled to the cover coupling part 640 . In one embodiment, the frame coupling part 750 may be detachably coupled to the cover coupling part 640 in the vertical direction.

In another embodiment, after the frame coupling part 750 is inserted into the cover coupling part 640 in the front-rear direction, it may be detachably coupled in the vertical direction.

The cover coupling portion 640 includes a first groove 641 , a second groove 642 , a first projection 643 , a second projection 644 , and a receiving groove 645 .

The first groove 641 is a space into which the frame coupling part 750 is inserted. The first groove 641 is recessed in one side of the support frame 600 facing the cover frame 700 , in the illustrated embodiment, the front side.

The distance at which the first groove 641 is recessed may be greater than the length through which the extension part 751, which will be described later, extends. Accordingly, the frame coupling part 750 may be inserted into the first groove 641 until the insertion part 752 reaches the receiving groove 645 .

One side of the first groove 641 may be opened. Specifically, one side of the first groove 641 facing the arc box 520, the upper side in the illustrated embodiment may be formed open. Accordingly, it may be said that the first groove 641 is recessed in the upper side of the support frame 600 .

The first groove 641 may extend in the vertical direction by a predetermined length. In an embodiment, the length in which the first groove 641 extends in the vertical direction may be longer than the height (ie, the length in the vertical direction) of the insertion part 752 of the frame coupling part 750 .

The other side of the first groove 641 may be closed. Specifically, the other side of the first groove 641 opposite to the arc box 520 , in the illustrated embodiment, the lower side may be closed. Accordingly, the frame coupling part 750 inserted into the first groove 641 may be stably seated on the other side of the first groove 641 .

The other side of the first groove 641 may be closed. Specifically, the other side of the first groove 641 opposite to the cover frame 700 , in the illustrated embodiment, the rear side may be closed. Accordingly, a distance at which the frame coupling part 750 is inserted into the first groove 641 may be limited.

That is, the first groove 641 is formed with one side (ie, the front side) facing the cover frame 700 and the other side (ie, the upper side) facing the arc box 520 . In addition, the first groove 641, the other side opposite to the cover frame 700 (ie, the rear side) and the other side opposite to the arc box 520 (ie, the lower side) are closed.

The first groove 641 is formed to have a predetermined width (ie, a length in the left-right direction). The length of the width of the first groove 641 is preferably determined according to the length of the width of the insertion portion 752 of the frame coupling portion 750 .

That is, it is preferable that the length of the width of the first groove 641 is greater than the length of the width of the insertion part 752 .

A second groove 642 and a receiving groove 645 are formed inside the first groove 641 . In addition, a first protrusion 643 and a second protrusion 644 are provided inside the first groove 641 .

The second groove 642 is a space into which the extension part 751 of the frame coupling part 750 is inserted. The second groove 642 is recessed in one side of the support frame 600 facing the cover frame 700 , in the illustrated embodiment, the front side.

The recessed distance of the second groove 642 may be shorter than the recessed distance of the first groove 641 . In an embodiment, the sum of the distance at which the second groove 642 is depressed and the width (ie, the length in the front-rear direction) of the receiving groove 645 may be equal to the distance at which the first groove 641 is depressed.

The second groove 642 may be defined as a portion of the first groove 641 .

Specifically, the second groove 642 may be defined as a space surrounded by the first protrusion 643 and the second protrusion 644 among the first grooves 641 . In the illustrated embodiment, the left and right sides of the second groove 642 are surrounded by the first protrusion 643 and the second protrusion 644 , respectively.

Accordingly, the width (ie, the length in the left-right direction) of the second groove 642 is formed to be smaller than the width (ie, the length in the left-right direction) of the first groove 641 . The length of the width of the second groove 642 is preferably determined according to the length of the width of the frame coupling portion 750 .

That is, the length of the width of the second groove 642 is preferably formed to be greater than the width of the extension part 751 . In addition, the length of the width of the second groove 642 is the width of the insertion part 752 . It is preferable to be formed smaller.

Accordingly, when the frame coupling part 750 is inserted and coupled to the cover coupling part 640 , the insertion part 752 is not drawn out through the second groove 642 . Accordingly, the coupling state between the support frame 600 and the cover frame 700 may be stably maintained.

The first protrusion 643 and the second protrusion 644 are formed to surround the first groove 641 in the width direction, that is, in the left-right direction in the illustrated embodiment. The first protrusion 643 and the second protrusion 644 are formed to protrude toward each other on each surface surrounding the first groove 641 in the width direction.

Surfaces on which the first protrusion 643 and the second protrusion 644 face each other may be spaced apart from each other. By the separation, a second groove 642 that is a space between each surface of the first protrusion 643 and the second protrusion 644 may be defined.

In other words, the first protrusion 643 and the second protrusion 644 are positioned adjacent to one side of the support frame 600 facing the cover frame 700 , and the front side in the illustrated embodiment. In addition, the first protrusion 643 and the second protrusion 644 extend from the one side surface of the support frame 600 in a direction away from the cover frame 700 .

A depth (ie, a length in the front-rear direction) of the second groove 642 may be determined according to lengths of the first protrusion 643 and the second protrusion 644 extending toward the cover frame 700 . That is, the depth of the second groove 642 may be the same as the length in which the first protrusion 643 and the second protrusion 644 extend toward the cover frame 700 .

A height (ie, a length in the vertical direction) of the first protrusion 643 and the second protrusion 644 may be shorter than a length in which the first groove 641 extends in the vertical direction. Accordingly, after the frame coupling part 750 is inserted, it may be moved downward to be accommodated in the second groove 642 and the receiving groove 645 .

An accommodating groove 645 is positioned on one side of the first protrusion 643 and the second protrusion 644 opposite to the cover frame 700 , and on the rear side in the illustrated embodiment.

The receiving groove 645 is a space in which the insertion part 752 of the frame coupling part 750 is accommodated. The receiving groove 645 may be defined as a space in which the first groove 641 is partitioned.

Specifically, the receiving groove 645 is a space formed by the first groove 641 , except for the space occupied by the second groove 642 , the first protrusion part 643 , and the second protrusion part 644 . It may be defined as some or all.

The receiving groove 645 communicates with the first groove 641 . In the above embodiment, the receiving groove 645 is a space formed by the first groove 641 , except for the space occupied by the second groove 642 , the first protrusion part 643 , and the second protrusion part 644 . It will be understood that the case is a part of

The receiving groove 645 communicates with the second groove 642 . Accordingly, the second groove 642 may be accommodated in the extended portion 751 continuous with the insertion portion 752 of the frame coupling portion 750 .

The receiving groove 645 may be defined as a space between a surface surrounding the first groove 641 at one side opposite to the cover frame 700 , and the first protrusion 643 and the second protrusion 644 .

In other words, the receiving groove 645 is a space surrounded by the left, right, rear, and lower surfaces of the first groove 641 and the rear surface of the first and

second protrusions

643 and 644 .

The receiving groove 645 is positioned farther from the cover frame 700 compared to the second groove 642 . That is, the receiving groove 645 is located on the rear side of the second groove 642 .

The receiving groove 645 may be formed to have a predetermined width (ie, a length in the left-right direction). The width of the receiving groove 645 may be greater than the width of the second groove 642 .

The width of the receiving groove 645 may be greater than the width of the insertion part 752 . In an embodiment, the width of the receiving groove 645 may be the same as the width of the first groove 641 .

Accordingly, the insertion portion 752 of the frame coupling portion 750 may be easily inserted and received in the accommodation groove 645 . In addition, the insertion part 752 inserted into the receiving groove 645 is not drawn out through the second groove 642 .

A detailed description of the process in which the frame coupling part 750 is inserted and coupled to the cover coupling part 640 and the support frame 600 and the cover frame 700 are coupled will be described later.

(6) Description of the cover frame 700 according to an embodiment of the present invention

The electromagnetic contactor 10 according to an embodiment of the present invention includes a cover frame 700 .

The cover frame 700 is coupled to the arc extinguishing unit 500 and the support frame 600 . Both sides of the cover frame 700 are closed, so that electrical interference with other electromagnetic contactors 10 can be prevented.

In addition, the cover frame 700 may be disposed to cover the arc discharge hole 522 of the arc extinguishing unit 500 to accommodate the arc discharged from the arc discharge hole 522 for a predetermined time. Accordingly, since the generated arc is not directly discharged to the user, the user's safety may be improved.

Furthermore, the cover frame 700 is configured to electrically separate currents of different phases energized by the electromagnetic contactor 10 . Accordingly, interference between currents of different phases is prevented, thereby preventing an electrical accident from occurring.

Hereinafter, a cover frame 700 according to an embodiment of the present invention will be described in detail with reference to FIGS. 10 to 14 .

The cover frame 700 is detachably inserted and coupled to the support frame 600 . The coupling is achieved by inserting the frame coupling part 750 of the cover frame 700 into the cover coupling part 640 of the support frame 600 .

The cover frame 700 is detachably coupled to the arc box 520 . The coupling is achieved by fastening the arc box fastening part 740 of the cover frame 700 to the arc discharge hole 522 .

A detailed description of a process in which the cover frame 700 is coupled to the arc box 520 and the support frame 600 will be described later.

The cover frame 700 may prevent electrical interference between the plurality of electromagnetic contactors 10 disposed adjacent to each other. That is, the cover frame 700 may electrically separate each electromagnetic contactor 10 . The separation is achieved by the outer surface 710 provided on the cover frame 700 .

The cover frame 700 may block electrical interference between currents of a plurality of phases energized by the electromagnetic contactor 10 . The blocking is achieved by the rib portion 720 provided on the cover frame 700 .

In the illustrated embodiment, the cover frame 700 is formed to have a length in a direction (ie, front-back direction) toward the arc box 520 or the support frame 600 is shorter than a length in a width direction (ie, left-right direction). . In other words, the cover frame 700 is formed to have a cross section of a rectangle in which the length in the front and rear directions is shorter than the length in the left and right directions.

It is preferable that the width direction length of the cover frame 700, that is, the length in the left and right direction, is determined according to the width direction length of the arc box 520 and the support frame 600 .

The cover frame 700 is formed to extend in the height direction, that is, in the vertical direction in the illustrated embodiment. Accordingly, the overall shape of the cover frame 700 is a rectangular prism shape.

The shape of the cover frame 700 is detachably coupled to the arc box 520 or the support frame 600 , and may be determined in any shape capable of covering the fixed contact portion 400 and the arc discharge hole 522 . .

The cover frame 700 may be formed of an insulating material. This is to exclude electrical interference between currents of different phases energized in the electromagnetic contactor 10 . In addition, when a plurality of electromagnetic contactors 10 are provided, this is to exclude electrical interference between the adjacent electromagnetic contactors 10 .

The cover frame 700 may be formed of a material having high rigidity and high heat resistance. This is to prevent the cover frame 700 from being damaged by the arc discharged from the arc discharge hole 522 .

In one embodiment, the cover frame 700 may be formed of synthetic resin or reinforced plastic.

A plurality of cover frames 700 may be provided. The plurality of cover frames 700 may be respectively coupled to the arc box 520 and the support frame 600 . In the illustrated embodiment, one cover frame 700 is provided and positioned on the front side of the arc box 520 and the support frame 600 .

However, one side and the other side of the arc box 520, that is, the front side and the rear side in the illustrated embodiment may be formed to be symmetrical to each other.

Similarly, one side and the other side of the support frame 600, that is, the front side and the rear side in the illustrated embodiment may be formed to be symmetrical to each other.

Accordingly, two cover frames 700 are provided and may be respectively coupled to the front side and the rear side of the arc box 520 and the support frame 600 .

Hereinafter, for convenience of description, it is assumed that the cover frame 700 is coupled to the front side of the arc box 520 and the support frame 600 .

In the illustrated embodiment, the cover frame 700 includes an outer surface 710 , a rib portion 720 , an arc space portion 730 , an arc box fastening portion 740 , and a frame coupling portion 750 .

The outer surface 710 forms the outer surface of the cover frame 700 . The outer surface 710 may be disposed to surround each component of the cover frame 700 .

A rib portion 720 and an arc space portion 730 may be positioned in a space surrounded by the outer surface 710 .

The outer surface 710 includes a first surface 711 , a second surface 712 , a third surface 713 , and a fourth surface 714 .

The first surface 711 is an outer surface of one side of the cover frame 700 . In the illustrated embodiment, the first surface 711 is provided as the upper surface of the cover frame 700 .

The first surface 711 is continuous with the second surface 712 , the third surface 713 , and the fourth surface 714 . The second surface 712 , the third surface 713 , and the fourth surface 714 are formed to extend in a direction away from the first surface 711 , that is, downward in the illustrated embodiment.

The first surface 711 is continuous with the rib portion 720 . The rib portion 720 is formed to extend in a direction away from the first surface 711, that is, downward in the illustrated embodiment.

The first face 711 is configured to cover the arc space 730 . In other words, the first surface 711 is located above the arc space 730 and forms an upper boundary of the arc space 730 .

The first surface 711 is formed to extend in one direction, in the illustrated embodiment, in the left and right directions. The first surface 711 is formed in a direction toward the arc box 520 , that is, a length in the front-back direction is extended, that is, shorter than a length in the left-right direction.

In other words, in the first surface 711 , the length of the front-back direction corners facing each other is longer than the length of the left-right direction edges facing each other. In an embodiment, the length of the edge of the front-back direction of the first surface 711 may be equal to the length of the arc box 520 or the support frame 600 in the width direction (ie, the left-right direction).

Accordingly, even if the cover frame 700 is coupled to the arc box 520 or the support frame 600 , the cover frame 700 does not protrude excessively.

Accordingly, even when the electromagnetic contactor 10 includes the cover frame 700 , the space occupied can be minimized.

An arc box fastening part 740 is provided on one side of the first surface 711 facing the arc box 520 or the cover frame 700 , and on the rear side in the illustrated embodiment.

A second surface 712 and a third surface 713 are formed to extend from the ends of the first surface 711 in the longitudinal direction, in the left-right direction in the illustrated embodiment. In the width direction of the first surface 711, a fourth surface 714 is formed extending from the front end in the illustrated embodiment.

In addition, one side of the first surface 711 facing the arc space portion 730, the lower side in the illustrated embodiment is formed to extend the rib portion (720).

The second surface 712 is the other side of the cover frame 700 , and is an outer surface of the left side in the illustrated embodiment.

The second surface 712 is formed to extend from the left end in one direction in which the first surface 711 extends, in the illustrated embodiment. The second surface 712 forms a predetermined angle with the first surface 711 and extends downward in the illustrated embodiment in a direction away from the first surface 711 .

In an embodiment, the second surface 712 may extend perpendicularly to the first surface 711 .

The second surface 712 is formed to extend from the first surface 711 by a predetermined length. In an embodiment, the length to which the second surface 712 extends may be the same as the length to which the third surface 713 extends. In addition, an extended length of the second surface 712 may be longer than an extended length of the rib portion 720 .

In one embodiment, the second surface 712 may extend such that the lower end of the second surface 712 is positioned below the fixed contact portion 400 when viewed from the side. That is, the second surface ( 712 may extend to cover the fixed contact unit 400 from the side.

In the above embodiment, the second surface 712 may prevent electrical interference from occurring between the fixed contact portion 400 and the fixed contact portion 400 of another electromagnetic contactor 10 positioned adjacently.

The second surface 712 is spaced apart from the third surface 713 and is disposed to face the third surface 713 . Specifically, the second surface 712 is disposed to face the third surface 713 with the rib portion 720 and the arc space portion 730 interposed therebetween. In an embodiment, the second surface 712 and the third surface 713 may be disposed parallel to each other.

The second surface 712 is continuous with the fourth surface 714 . Specifically, one side of the second surface 712 opposite to the arc box 520 , in the illustrated embodiment, the right end is continuous with the left end of the fourth surface 714 .

The second face 712 partially surrounds the arc space 730 . Specifically, the second surface 712 partially surrounds the adjacent first arc space 731 .

The second surface 712 partially surrounds the first opening 731a. Specifically, the second surface 712 forms a left boundary of the first opening 731a.

When the cover frame 700 is coupled to the arc box 520 and the support frame 600 , the second surface 712 covers one side of the arc box 520 and the support frame 600 , the left side in the illustrated embodiment. is composed of

Accordingly, electrical interference between the electromagnetic contactor 10 and another electromagnetic contactor 10 disposed adjacent to the left side of the electromagnetic contactor 10 can be prevented.

The third surface 713 is the other side of the cover frame 700 , and is an outer surface of the right side in the illustrated embodiment.

The third surface 713 is formed to extend from the right end in the other direction in which the first surface 711 extends, in the illustrated embodiment. The third surface 713 forms a predetermined angle with the first surface 711 and extends downward in the illustrated embodiment in a direction away from the first surface 711 .

In an embodiment, the third surface 713 may extend perpendicularly to the first surface 711 .

The third surface 713 is formed to extend from the first surface 711 by a predetermined length. In an embodiment, the length to which the third surface 713 extends may be the same as the length to which the second surface 712 extends. In addition, an extended length of the third surface 713 may be longer than an extended length of the rib portion 720 .

In an embodiment, the third surface 713 may extend such that the lower end of the third surface 713 is positioned below the fixed contact portion 400 when viewed from the side. That is, the third surface ( 713 may extend to cover the fixed contact unit 400 from the side.

In the above embodiment, the third surface 713 may prevent electrical interference from occurring between the fixed contact portion 400 and the fixed contact portion 400 of another electromagnetic contactor 10 positioned adjacently.

The third surface 713 is spaced apart from the second surface 712 and is disposed to face the second surface 712 . Specifically, the third surface 713 is disposed to face the second surface 712 with the rib portion 720 and the arc space portion 730 interposed therebetween. In an embodiment, the third surface 713 and the second surface 712 may be disposed parallel to each other.

The third surface 713 is continuous with the fourth surface 714 . Specifically, one side of the third surface 713 opposite to the arc box 520 , in the illustrated embodiment, the left end is continuous with the right end of the fourth surface 714 .

The third face 713 partially surrounds the arc space 730 . Specifically, the third surface 713 partially surrounds the adjacent third arc space 733 .

The third surface 713 partially surrounds the third opening 733a. Specifically, the third surface 713 forms a left boundary of the third opening 733a.

When the cover frame 700 is coupled to the arc box 520 and the support frame 600 , the third surface 713 covers one side of the arc box 520 and the support frame 600 , the left side in the illustrated embodiment. is composed of

The fourth surface 714 is the outer surface of the other side of the cover frame 700 , the front side in the illustrated embodiment.

The fourth surface 714 is formed to extend from the front end in the width direction of the first surface 711 , in the illustrated embodiment. The fourth surface 714 forms a predetermined angle with the first surface 711 and extends downward in the illustrated embodiment in a direction away from the first surface 711 .

In an embodiment, the fourth surface 714 may extend perpendicularly to the first surface 711 .

The fourth surface 714 is formed to extend from the first surface 711 by a predetermined length. In an embodiment, the length to which the fourth surface 714 extends may be shorter than the length to which the second surface 712 and the third surface 713 extend. In addition, the length in which the fourth surface 714 extends may be shorter than the length in which the rib portion 720 extends.

In an embodiment, the fourth surface 714 may extend such that a lower end thereof is positioned lower than a lower end of the arc discharge hole 522 . That is, when viewed from the front, the fourth surface 714 may be disposed to completely cover the arc discharge hole 522 .

Accordingly, the arc discharged from the arc discharge hole 522 does not immediately flow into the outer space. As a result, injury to a user positioned adjacent to the electromagnetic contactor 10 can be prevented.

One side of the fourth surface 714 opposite to the first surface 711, in the illustrated embodiment, the lower end, the second surface 712, the third surface 713 and the lower end of the rib portion 720 than is located on the upper side.

Accordingly, a plurality of

openings

731a, 732a, and 733a having the lower end of the fourth surface 714 as the upper boundary may be defined.

The fourth face 714 is continuous between the second face 712 and the third face 713 . Specifically, one end of the fourth surface 714 facing the second surface 712 , in the illustrated embodiment, the left end is continuous with the second surface 712 . In addition, the other end of the fourth surface 714 facing the third surface 713, the right end in the illustrated embodiment is continuous with the third surface (713).

The fourth surface 714 may extend at a predetermined angle to the second surface 712 and the third surface 713 . In one embodiment, the fourth face 714 may extend perpendicular to the second face 712 and the third face 713 .

One side of the fourth surface 714 facing the arc box 520 or the support frame 600, the rib portion 720 is continuous on the rear side in the illustrated embodiment. In one embodiment, the fourth surface 714 and the rib portion 720 may be formed perpendicular to each other.

The fourth face 714 partially surrounds the arc space 730 . Specifically, the fourth surface 714 surrounds the front side of the first to

third arc spaces

731 , 732 , 733 formed on the rear side.

The fourth surface 714 partially surrounds the first to

third openings

731a, 732a, and 733a. Specifically, the fourth surface 714 forms an upper boundary of the first to

third openings

731a, 732a, and 733a.

When the cover frame 700 is coupled to the arc box 520 and the support frame 600 , the fourth surface 714 is the other side of the arc box 520 and the support frame 600 , the front side in the illustrated embodiment. configured to cover. At this time, as described above, the fourth surface 714 may be disposed to cover the arc discharge hole 522 .

Accordingly, the arc discharged from the arc discharge hole 522 is not discharged in a straight line, so that the safety of the user can be improved.

The rib part 720 physically and electrically separates the plurality of fixed contact parts 400 from each other. Due to the rib portion 720 , currents of different phases energized to the plurality of fixed contact portions 400 are not electrically interfered with each other.

In addition, the rib portion 720 is continuous with the outer surface 710 , respectively, to reinforce the rigidity of the cover frame 700 . In one embodiment, the rib portion 720 may be provided in a plate shape. In the illustrated embodiment, the rib portion 720 is formed in a rectangular plate shape having a predetermined thickness.

The rib portion 720 is formed to extend from one side of the first surface 711 facing the arc space portion 730 , from the lower side in the illustrated embodiment. The rib portion 720 forms a predetermined angle with the first surface 711 and is formed to extend downward in the illustrated embodiment in a direction away from the first surface 711 .

In an embodiment, the rib portion 720 may be formed to extend perpendicularly to the first surface 711 .

The rib portion 720 is formed to extend from the first surface 711 by a predetermined length. In an embodiment, the rib portion 720 may be formed to extend by a length shorter than that of the second surface 712 and the third surface 713 . In addition, in one embodiment, the rib portion 720 may be formed to extend longer than the fourth surface (714).

In one embodiment, the rib portion 720 may extend such that the lower end of the rib portion 720 is positioned below the fixed contact portion 400 when viewed from the side. That is, the rib portion 720 is fixed It may extend to cover the contact part 400 from the side.

In the above embodiment, the rib portion 720 may prevent electrical interference between the plurality of fixed contact portions 400 disposed adjacent to each other.

The rib portion 720 is positioned between the second surface 712 and the third surface 713 . In other words, the rib portion 720 is positioned in the arc space portion 730 that is a space formed between the second surface 712 and the third surface 713 . The rib part 720 divides the arc space part 730 into a plurality.

In an embodiment, the rib portion 720 may be disposed parallel to the second surface 712 and the third surface 713 .

The rib portion 720 is continuous with the fourth surface 714 . Specifically, one edge of the rib portion 720 facing the fourth surface 714, in the illustrated embodiment, the front side edge is continuous with the fourth surface (714). In an embodiment, the rib portion 720 may extend perpendicular to the fourth surface 714 .

One side of the rib portion 720 facing the arc box 520 or the support frame 600, a frame coupling portion 750 is provided at the rear side edge in the illustrated embodiment. In one embodiment, the frame coupling part 750 may be located adjacent to the lower end of the rear side edge of the rib part 720 .

A plurality of rib parts 720 may be provided. The plurality of rib parts 720 may be disposed to be spaced apart from each other. In the illustrated embodiment, the rib part 720 is provided with two, including a first rib 721 and a second rib 722 .

Accordingly, in the rib portion 720 , the arc space portion 730 is divided into first to third

arc space portions

731 , 732 , and 733 . This is due to the current passing through the three different phases of the electromagnetic contactor 10 according to an embodiment of the present invention.

The first rib 721 is located on one side facing the second side 712 , on the left side in the illustrated embodiment.

The first rib 721 partitions the first arc space 731 and the second arc space 732 . The first rib 721 partially surrounds the first arc space 731 and the second arc space 732 .

Specifically, the first rib 721 surrounds one side of the first arc space 731 opposite to the second surface 712 , in the illustrated embodiment, the right side. Further, the first rib 721 surrounds one side of the second arc space 732 facing the third face 713 , the left side in the illustrated embodiment.

The first rib 721 divides the first opening 731a and the second opening 732a. The first rib 721 partially surrounds the first opening 731a and the second opening 732a.

Specifically, the first rib 721 surrounds one side of the first opening 731a opposite to the second surface 712 , and the right side in the illustrated embodiment. In addition, the first rib 721 surrounds one side of the second opening 732a facing the third surface 713 , the left side in the illustrated embodiment.

The second rib 722 is located on one side facing the third side 713 , on the right side in the illustrated embodiment.

The second rib 722 defines a second arc space 732 and a third arc space 733 . The second rib 722 partially surrounds the second arc volume 732 and the third arc volume 733 .

Specifically, the second rib 722 surrounds one side of the second arc space 732 opposite the first rib 721 , the right side in the illustrated embodiment. In addition, the second rib 722 surrounds one side of the third arc space 733 opposite the third face 713 , in the illustrated embodiment, the right side.

The second rib 722 partitions the second opening 732a and the third opening 733a. The second rib 722 partially surrounds the second opening 732a and the third opening 733a.

Specifically, the second rib 722 surrounds one side of the second opening 732a opposite to the first rib 721 , the left side in the illustrated embodiment. In addition, the second rib 722 surrounds one side of the second opening 732a opposite to the third surface 713 , in the illustrated embodiment, the left side.

The first rib 721 and the second rib 722 are disposed to face each other. Specifically, the first rib 721 and the second rib 722 are disposed to face each other with the second arc space portion 732 interposed therebetween. In one embodiment, the first rib 721 and the second rib 722 may be disposed in parallel.

The first rib 721 and the second rib 722 are preferably spaced apart enough to accommodate the fixed contact portion 400 disposed in the middle in the second arc space portion 732 disposed therebetween.

The arc space 730 is a space in which the arc discharged from the arc discharge hole 522 stays before being discharged to the external space. Accordingly, the discharged arc does not directly flow into the external space. As a result, the user may not be injured by the temperature or pressure of the arc.

The arc space 730 communicates with the arc discharge hole 522 . The arc discharged from the arc discharge hole 522 may be introduced into the arc space 730 .

The arc space 730 communicates with the

openings

731a, 732a, and 733a. The arc introduced into the arc space 730 may flow to the outside through the

openings

731a, 732a, and 733a.

The arc space portion 730 is defined as a space surrounded by the outer surface 710 and the rib portion 720 . Specifically, the front side, left and right sides of the arc space 730 are surrounded by the outer surface 710 . In addition, the arc space portion 730 may be divided into a plurality by the rib portion 720 , and the divided

arc space portions

731 , 732 , and 733 may be surrounded by the rib portion 720 , respectively.

In addition, one side of the arc space 730 facing the arc box 520, the rear side in the illustrated embodiment is formed open. Accordingly, the inner space of the arc box 520 , the arc discharge hole 522 , and the arc space portion 730 may communicate with each other.

A first surface 711 is positioned above the arc space 730 . The first face 711 forms an upper boundary of the arc space 730 .

A second surface 712 and a third surface 713 are respectively located on the left and right sides of the arc space 730 . The second face 712 and the third face 713 form left and right boundaries of the arc space 730 , respectively.

A fourth face 714 is located on the front side of the arc space 730 . The fourth face 714 defines the front side boundary of the arc space 730 .

On the front side of the arc space 730 ,

openings

731a , 732a , 733a are located below the fourth surface 714 . The arc space 730 and the

openings

731a, 732a, and 733a communicate with each other.

The arc space 730 is formed between the second face 712 and the third face 713 . The arc space portion 730 may be divided into a plurality by the rib portion 720 .

In the illustrated embodiment, the arc space 730 includes a first arc space 731 positioned between the second face 712 and the first rib 721 , the first rib 721 and the second rib ( It is divided into a second arc space 732 positioned between 722 and a third arc space 733 positioned between the second rib 722 and the third face 713 .

This is due to the current passing through the three different phases of the electromagnetic contactor 10 according to an embodiment of the present invention. That is, the arc generated in the fixed contact portion 400 through which the current of each phase is passed through the arc discharge hole 522 flows into each of the

arc space portions

731 , 732 , and 733 .

As described above, the arc space portion 730 is surrounded by the outer surface 710 and the rib portion 720 . Accordingly, the arc that has passed through the arc discharge hole 522 is discharged to the external space after staying in the arc space 730 for a predetermined time.

Accordingly, the user may not be injured by the arc discharged.

The arc space 730 communicates with the

openings

731a, 732a, and 733a, respectively. The

openings

731a, 732a, and 733a function as passages through which the respective

arc space portions

731, 732, and 733 communicate with the outside.

Specifically, the first arc space portion 731 communicates with the first opening 731a. The arc introduced into the first arc space 731 may be discharged to the external space through the first opening 731a.

The second arc space 732 communicates with the second opening 732a. The arc introduced into the second arc space 732 may be discharged to the external space through the second opening 732a.

The third arc space portion 733 communicates with the third opening 733a. The arc introduced into the third arc space 733 may be discharged to the external space through the third opening 733a.

The

openings

731a , 732a , and 733a are partially surrounded by the outer surface 710 and the rib portion 720 .

Specifically, the first opening 731a is surrounded by the second surface 712 , the fourth surface 714 , and the first rib 721 . The second opening 732a is surrounded by the fourth face 714 , the first rib 721 , and the second rib 722 . The third opening 733a is surrounded by the third face 713 , the fourth face 714 , and the second rib 722 .

The arc box fastening part 740 is a part in which the cover frame 700 is coupled to the arc box 520 .

The arc box fastening part 740 is formed extending from the outer surface 710 toward the arc box 520 . Specifically, the arc box fastening part 740 is formed to extend toward the arc box 520 from one side of the first surface 711 facing the arc box 520 , and from the rear side in the illustrated embodiment.

The arc box fastening part 740 is detachably inserted and coupled to the arc discharge hole 522 . When the arc box fastening part 740 is inserted into the arc discharge hole 522 , the arc box fastening part 740 is not arbitrarily drawn out by the fastening part 743 .

A plurality of arc box fastening units 740 may be provided. The plurality of arc box fastening units 740 may be disposed to be spaced apart from each other.

In the illustrated embodiment, the arc box fastening portion 740 is one on the upper side of the first arc space portion 731 , two on the upper side of the second arc space portion 732 , and the third arc space portion 733 . One is formed on the upper side of the , a total of four are provided.

The arc box fastening unit 740 may be provided according to any number and arrangement method capable of stably maintaining a coupled state between the cover frame 700 and the arc box 520 .

Specifically, the arc box fastening unit 740 may be disposed and provided to correspond to the position and number of the arc discharge hole 522 .

The arc box fastening part 740 may be formed of a material having a predetermined elasticity. Accordingly, the arc box fastening part 740 may be pressed downward when inserted into the arc discharge hole 522 . In addition, when the insertion of the insertion part 742 and the fastening part 743 is completed, the shape is restored to the upper side, and the fastening part 743 may be hook-coupled to the surface surrounding the arc discharge hole 522.

The arc box fastening part 740 includes an extension part 741 , an insertion part 742 , and a fastening part 743 .

The extension portion 741 is a portion in which the arc box fastening portion 740 is continuous with the first surface 711 . In other words, the extension 741 is formed to extend toward the arc box 520 from one side of the first surface 711 facing the arc box 520 , and from the rear side in the illustrated embodiment.

An insertion portion 742 and a fastening portion 743 are positioned at one side of the extension portion 741 opposite to the first surface 711 , and at the rear end in the illustrated embodiment.

The insertion part 742 is a portion into which the arc box fastening part 740 is inserted into the arc discharge hole 522 . The insertion part 742 may be inserted through the arc discharge hole 522 .

In the illustrated embodiment, the insertion portion 742 is formed such that its cross-sectional area is reduced in a direction away from the extension portion 741 . In other words, the cross-sectional area of one end of the insertion portion 742 facing the arc box 520 is formed smaller than the cross-sectional area of the other end coupled to the extension 741 .

Accordingly, the insertion part 742 is first inserted into the arc box 520 in a portion formed with a small cross-sectional area. Accordingly, the insertion part 742 may be easily inserted into the arc discharge hole 522 .

The insertion part 742 may be curved at a predetermined angle with respect to the extension part 741 . In the illustrated embodiment, the insert 742 is curved upwardly.

A fastening part 743 is positioned above the insertion part 742 .

The fastening part 743 prevents the arc box fastening part 740 inserted into the arc outlet hole 522 from being arbitrarily drawn out from the arc outlet hole 522 . The fastening part 743 is inserted through the arc discharge hole 522 together with the insertion part 742 .

The fastening part 743 is formed on one side of the insertion part 742, the rear side in the illustrated embodiment. In an embodiment, the fastening part 743 may be positioned at a portion where the extension part 741 and the insertion part 742 are continuous.

The fastening part 743 is formed to protrude radially outward from the side surface of the insertion part 742 . One side of the fastening portion 743 facing the first surface 711 , in the illustrated embodiment, the front side may extend at a predetermined angle with the side surface of the insertion portion 742 . In an embodiment, the fastening part 743 may extend perpendicularly to a side surface of the insertion part 742 .

The fastening part 743 may be formed to be inclined toward the insertion part 742 in a direction away from the first surface 711 . In other words, the fastening part 743 may be formed to be inclined toward the insertion part 742 in a direction toward the arc box 520 .

That is, the fastening part 743 is formed so that its cross-sectional area decreases as it moves away from the first surface 711 .

Accordingly, the arc box fastening part 740 is formed in the shape of a hook as a whole. Accordingly, the arc box fastening part 740 may be easily inserted into the arc discharge hole 522 .

In addition, when the arc box fastening part 740 is inserted through the arc outlet hole 522, the fastening part 743 is the surface of the arc box 520 surrounding the arc outlet hole 522 (front in the illustrated embodiment). side) is in contact.

Accordingly, the arc box fastening portion 740 is not arbitrarily drawn out from the arc discharge hole (522).

The frame coupling part 750 is a part in which the cover frame 700 is coupled to the support frame 600 .

The frame coupling part 750 is formed to extend from the rib part 720 toward the support frame 600 . Specifically, the frame coupling part 750 is formed to extend toward the support frame 600 from one side of the rib part 720 facing the support frame 600 , and from the rear side in the illustrated embodiment.

The frame coupling part 750 is detachably inserted and coupled to the cover coupling part 640 . When the frame coupling part 750 is inserted into the cover coupling part 640 , the cover frame 700 is not arbitrarily drawn out by the insertion part 752 .

A plurality of frame coupling units 750 may be provided. In the illustrated embodiment, the frame coupling part 750 is provided with a total of two including the first frame coupling part 750a and the second frame coupling part 750b.

The first frame coupling portion 750a and the second frame coupling portion 750b extend from the first rib 721 and the second rib 722 , respectively. The first frame coupling portion 750a and the second frame coupling portion 750b are positioned adjacent to lower ends of rear side corners of the first rib 721 and the second rib 722 .

The frame coupling part 750 may be inserted and coupled to the cover coupling part 640 in various directions. In one embodiment, the frame coupling part 750 may be moved to the lower side after being positioned on the upper side of the cover coupling part 640 to be insertedly coupled to the cover coupling part 640 .

In another embodiment, the frame coupling part 750 may be horizontally moved to the rear side and accommodated in the first groove 641 , and then may be moved downward to be inserted into the cover coupling part 640 .

A detailed description thereof will be provided later.

The frame coupling part 750 includes an extension part 751 , an insertion part 752 , and a tapered part 753 .

The extension part 751 is a portion in which the frame coupling part 750 is continuous with the rib part 720 . In other words, the extension part 751 is formed to extend toward the support frame 600 from one side of the rib part 720 facing the support frame 600 , and from the rear side in the illustrated embodiment.

The extension part 751 is inserted into the second groove 642 of the cover coupling part 640 . The extension 751 may be accommodated in the second groove 642 through an opening formed at an upper side of the second groove 642 .

A length in which the extension part 751 extends toward the support frame 600 , that is, a length in the front-rear direction in the illustrated embodiment may be longer than a length in the front-rear direction of the second groove 642 .

Accordingly, when the extension part 751 is inserted into the second groove 642 , the insertion part 752 and the tapered part 753 positioned at the end of the extension part 751 may be accommodated in the accommodation groove 645 . .

The length of the extension part 751 in the width direction (ie, the left-right direction) may be shorter than the length of the second groove 642 in the left-right direction. In other words, the length of the extension part 751 in the width direction may be shorter than the distance between the first protrusion part 643 and the second protrusion part 644 being spaced apart from each other.

Accordingly, the extension 751 may be easily inserted and accommodated in the second groove 642 through the opening formed at the upper side of the second groove 642 .

The insertion part 752 is a portion in which the frame coupling part 750 is inserted and received in the receiving groove 645 of the cover coupling part 640 .

The insertion portion 752 is continuous with the extension portion 751 . The insertion portion 752 is located on one side of the extension portion 751 opposite the rib portion 720 , at the end of the rear side in the illustrated embodiment.

In the illustrated embodiment, the insertion part 752 is provided in a plate shape having a rectangular cross section. The insertion part 752 may be provided in any shape that is inserted into the receiving groove 645 to be caught by the first protrusion 643 and the second protrusion 644 .

The length of the insertion part 752 in the width direction (ie, the left and right direction) may be shorter than the length of the receiving groove 645 in the width direction. Also, a thickness (ie, a length in the front-rear direction) of the insertion part 752 may be formed to be shorter than a thickness of the receiving groove 645 .

Accordingly, the insertion part 752 may be easily inserted into the receiving groove 645 .

The length of the insertion part 752 in the width direction (ie, the left-right direction) may be longer than the length of the extension part 751 in the width direction. Also, the length of the insertion part 752 in the width direction (ie, the left-right direction) may be longer than the length of the second groove 642 in the left-right direction. In other words, the length of the insertion part 752 in the width direction may be longer than the distance between the first protrusion part 643 and the second protrusion part 644 being spaced apart from each other.

Accordingly, the insertion part 752 accommodated in the receiving groove 645 is not arbitrarily drawn out through the second groove 642 .

The tapered portion 753 is configured to reinforce the rigidity of the insertion portion 752 . The tapered portion 753 is formed by chamfering the edge of the insertion portion 752 .

The tapered portion 753 is formed on one side of the insertion portion 752 , on the lower side in the illustrated embodiment. This is due to the lower edge of the insertion part 752 being in contact with one surface of the support frame 600 surrounding the receiving groove 645 from the lower side.

As the tapered part 753 is formed, the amount of impact applied to the insertion part 752 from the one surface of the support frame 600 may be dispersed, and the rigidity of the insertion part 752 may be reinforced.

A plurality of tapered portions 753 may be formed. A plurality of tapered portions 753 may be formed at each corner of the insertion portion 752 . In the illustrated embodiment, the tapered portion 753 is formed at the lower left and right corners of the insertion portion 752, respectively.

Alternatively, the tapered portion 753 may be formed at the upper left and right corners of the insertion portion 752, respectively.

(7) Description of the process in which the cover frame 700 according to an embodiment of the present invention is coupled

The electromagnetic contactor 10 according to an embodiment of the present invention includes a cover frame 700 . The cover frame 700 is detachably coupled to the arc box 520 and the support frame 600 , respectively.

Accordingly, the generated arc is discharged after a predetermined time elapses, so that the user is not injured. In addition, electrical interference between currents of different phases energized in the electromagnetic contactor 10 can be prevented. Furthermore, electrical interference between the plurality of electromagnetic contactors 10 disposed adjacent to each other may also be prevented.

Hereinafter, a process in which the cover frame 700 according to an embodiment of the present invention is coupled to the arc box 520 and the support frame 600 will be described in detail with reference to FIGS. 15 to 17 .

Referring to FIG. 15 , a process in which the cover frame 700 is detachably coupled to the support frame 600 is illustrated.

In the illustrated embodiment, it will be understood that the cover frame 700 is moved from the upper side to the lower side of the support frame 600 to be detachably coupled to the support frame 600 .

First, the frame coupling part 750 is disposed so as to be positioned on the upper side perpendicular to the cover coupling part 640 .

As described above, the cover coupling part 640 includes a first cover coupling part 640a and a second cover coupling part 640b. In addition, the frame coupling part 750 includes a first frame coupling part 750a and a second frame coupling part 750b.

Accordingly, the frame coupling part 750 is such that the first frame coupling part 750a and the second frame coupling part 750b are positioned above the first cover coupling part 640a and the second cover coupling part 640b, respectively. are placed

When the cover frame 700 is moved downward, each frame coupling portion (750a, 750b) is inserted into each cover coupling portion (640a, 640b).

At this time, the extended part 751 of the frame coupling part 750 passes through the opening formed at the upper side of the second groove 642 and is inserted into the second groove 642 . In addition, the insertion part 752 of the frame coupling part 750 is inserted into the receiving groove 645 through the opening formed at the upper side of the first groove 641 .

Referring to FIG. 16 , a state in which the cover frame 700 and the support frame 600 are coupled is shown.

As described above, the extension portion 751 is formed to have a smaller width than the insertion portion 752 . In addition, the second groove 642 is formed to have a smaller width than the first groove 641 or the receiving groove 645 .

Therefore, when the frame coupling part 750 is accommodated in the cover coupling part 640, the frame coupling part 750 moves in the direction in which the insertion part 752 passes through the second groove 642, the front side in the illustrated embodiment. will not be withdrawn.

Except for the second groove 642, the cover coupling portion 640 has an opening formed only on its upper side. Accordingly, unless the cover frame 700 is pressed upward, the frame coupling part 750 is not arbitrarily drawn out from the cover coupling part 640 .

Referring to FIG. 17 , a process in which the cover frame 700 and the arc box 520 are coupled is illustrated.

As described above, the arc box 520 is supported by the support frame 600 . The combination of the arc box 520 and the support frame 600 is formed by combining the frame coupling part 523 and the arc box coupling part 610 as described above.

The arc box fastening part 740 of the cover frame 700 is inserted and coupled to the arc box 520 . Specifically, the arc box fastening portion 740 is inserted through the arc discharge hole 522 formed through the front side of the arc box (520).

In this case, as described above, the arc box fastening unit 740 may be formed of a material having a predetermined elasticity. In addition, the arc box fastening part 740 includes a fastening part 743 protruding upward.

Accordingly, the arc box fastening portion 740 is deformed in shape to face downward and is inserted through the arc discharge hole 522 . When the insertion of the inserting part 742 and the fastening part 743 is completed, the arc box fastening part 740 is restored to an upper shape again.

At this time, one surface of the fastening portion 743, the rear side surface in the illustrated embodiment is in contact with the surface surrounding the arc discharge hole (522). As described above, the coupling may be defined as a hook coupling.

Accordingly, the cover frame 700 may be stably coupled to the arc box 520 and the support frame 600 .

Also, it will be understood that the above-described process may be performed in reverse so that the cover frame 700 may be separated from the arc box 520 and the support frame 600 .

3. Description of the configuration of the electromagnetic contactor 10 according to another embodiment of the present invention

18 to 23 , the electromagnetic contactor 10 according to another embodiment of the present invention includes a frame 100 , a driving unit 200 , a movable contact unit 300 , a fixed contact unit 400 , and an arc extinguishing unit. (500).

In addition, referring further to FIGS. 24 to 31 , the electromagnetic contactor 10 according to another embodiment of the present invention further includes a support frame 600 and an insulating member 800 . The insulating member 800 is detachably coupled to the support frame 600 to prevent interference between currents in each phase.

Hereinafter, each configuration of the electromagnetic contactor 10 according to another embodiment of the present invention will be described with reference to the accompanying drawings, but the support frame 600 and the insulating member 800 will be described as separate claims.

(1) Description of the frame 100

18 to 20 , the electromagnetic contactor 10 according to another embodiment of the present invention includes a frame 100 .

The frame 100 includes a base part 110 and a lower frame part 120 .

The lower frame part 120 is positioned above the base part 110 .

(2) Description of the driving unit 200

Referring back to FIG. 20 , the electromagnetic contactor 10 according to another embodiment of the present invention includes a driving unit 200 .

The driving unit 200 includes a cross bar 210 and an elastic member 220 .

(3) Description of the movable contact part 300

Referring to FIG. 20 , the electromagnetic contactor 10 according to another embodiment of the present invention includes a movable contact unit 300 .

A plurality of movable contact units 300 may be provided. In the illustrated embodiment, the movable contact unit 300 is provided with three. This is due to the application of three-phase currents of R-phase, S-phase and T-phase or U-phase, V-phase and W-phase to the electromagnetic contactor 10 according to another embodiment of the present invention.

20 to 23 , the electromagnetic contactor 10 according to another embodiment of the present invention includes a fixed contact unit 400 .

This is due to the application of three-phase currents of R-phase, S-phase and T-phase or U-phase, V-phase and W-phase to the electromagnetic contactor 10 according to another embodiment of the present invention.

The arc extinguishing unit 500 includes an arc chamber 510 and an arc box 520 .

fixed contact

431 , 432 .

That is, the arc box 520 functions as a kind of housing.

A plurality of arc discharge holes 522 may be formed. In the illustrated embodiment, the arc discharge hole 522 is formed three at each position where the current of each phase is energized. As described above, in the electromagnetic contactor 10 according to another embodiment of the present invention, three different phase currents may be conducted.

(5) Description of the support frame 600 according to another embodiment of the present invention

The electromagnetic contactor 10 according to another embodiment of the present invention includes a support frame 600 . The support frame 600 fixedly supports the fixed contact unit 400 so that the fixed contact unit 400 is not arbitrarily oscillated while the electromagnetic contactor 10 is energized with the outside.

Hereinafter, a support frame 600 according to another embodiment of the present invention will be described in detail with reference to FIGS. 24 to 26 .

The support frame 600 includes an arc box coupling part 610 , a fixed contact receiving part 620 , a partition wall part 630 , and a plate coupling part 640 .

It may be coupled to the coupling part 523 . In an embodiment, the arc box coupling unit 610 may be screwed to the frame coupling unit 523 .

In addition, a plate coupling part 640 is positioned between the two arc box coupling parts 610 on the front side. A plate coupling part 640 is also located between the two arc box coupling parts 610 located on the rear side.

A plurality of fixed contact accommodating units 620 may be formed. The electromagnetic contactor 10 according to another embodiment of the present invention includes two fixed contact parts 400 for each phase. Accordingly, one fixed contact receiving portion 620 is formed on the front side and the rear side, respectively.

The electromagnetic contactor 10 according to another embodiment of the present invention includes two fixed contact parts 400 for each phase. Accordingly, the partition wall portion 630 is formed to extend to the front side and the rear side. The front side end of the partition wall part 630 may be located adjacent to the front side surface of the support frame 600 . The rear side end of the partition wall part 630 may be located adjacent to the rear side surface of the support frame 600 .

A plurality of partition walls 630 may be provided. In the electromagnetic contactor 10 according to another embodiment of the present invention, three different phase currents may be conducted. Accordingly, two partition wall portions 630 are provided and positioned between three fixed contact receiving portions 620 disposed in the width direction.

In an embodiment, the plate part 810 of the insulating member 800 may be positioned on an imaginary line extending from the partition wall part 630 . Accordingly, currents of different phases are not electrically interfered with.

In an embodiment, the plate coupling part 640 may be positioned on an imaginary line extending the partition wall part 630 .

The plate coupling part 640 is a portion to which the insulating member 800 is coupled to the support frame 600 . The support frame 600 may be detachably inserted and coupled to the plate coupling part 640 .

A plurality of plate coupling portions 640 may be formed. In the illustrated embodiment, the plate coupling part 640 is provided with a total of two, including a first plate coupling part 640a positioned on the left and a second plate coupling part 640b positioned on the right side.

The first plate coupling part 640a and the second plate coupling part 640b are disposed to be spaced apart from each other. The first to

third coupling protrusions

830 , 840 , and 850 of the insulating member 800 are respectively inserted and coupled to the first plate coupling part 640a and the second plate coupling part 640b .

The first plate coupling part 640a and the second plate coupling part 640b are different from each other in the arrangement position, and other shapes and structures are the same. Accordingly, the first plate coupling part 640a and the second plate coupling part 640b will be collectively referred to as the plate coupling part 640 .

The plate coupling part 640 may be formed on both sides of the support frame 600 facing each other. In the illustrated embodiment, the plate coupling portion 640 is formed on the front side and the rear side of the support frame 600 facing each other, respectively.

Accordingly, a total of four plate coupling portions 640 are formed. Hereinafter, for convenience of description, each direction will be described with reference to the plate coupling portion 640 positioned on the front side.

The first to

third coupling protrusions

830 , 840 , 850 are inserted and coupled to the plate coupling part 640 . In one embodiment, the first to

third coupling protrusions

830 , 840 , 850 may be detachably coupled to the plate coupling part 640 in the front and rear directions.

The plate coupling portion 640 includes a first groove 641 , a second groove 642 , a first projection 643 , a second projection 644 , and a receiving groove 645 .

The first groove 641 is a space into which the first to

third coupling protrusions

830 , 840 , 850 are inserted. The first groove 641 is recessed in one side of the support frame 600 facing the insulating member 800 , in the illustrated embodiment, the front side.

The distance at which the first groove 641 is recessed may be greater than or equal to the length in which first to

third coupling protrusions

830 , 840 , and 850 to be described later extend. Accordingly, the first to

third coupling protrusions

830 , 840 , 850 are formed until the

respective insertion portions

832 , 842 , 852 and the

respective coupling portions

833 , 843 , 853 reach the receiving groove 645 . It may be inserted into the first groove 641 .

The first groove 641 may extend in the vertical direction by a predetermined length. In an embodiment, the length of the first groove 641 extending in the vertical direction is the distance between the upper end of the first coupling protrusion 830 of the insulating member 800 and the lower end of the third coupling protrusion 850 . It may be formed longer.

The other side of the first groove 641 may be closed. Specifically, the other side of the first groove 641 opposite to the arc box 520 , in the illustrated embodiment, the lower side may be closed. Accordingly, the first to

third coupling protrusions

830 , 840 , and 850 inserted into the first groove 641 may be stably seated on the other side of the first groove 641 .

The other side of the first groove 641 may be closed. Specifically, the other side of the first groove 641 opposite to the insulating member 800 , in the illustrated embodiment, the rear side may be closed. Accordingly, a distance at which the first to

third coupling protrusions

830 , 840 , and 850 are inserted into the first groove 641 may be limited.

That is, in the first groove 641 , one side (ie, the front side) facing the insulating member 800 and the other side (ie, the upper side) facing the arc box 520 are openly formed. In addition, the first groove 641 is closed on the other side (ie, the rear side) opposite to the insulating member 800 and the other side (ie, the lower side) opposite to the arc box 520 .

The first groove 641 is formed to have a predetermined width (ie, a length in the left-right direction). The length of the width of the first groove 641 is the right end of the first coupling part 833 or the third coupling part 853 of the first to

third coupling protrusions

830, 840, 850 and the second coupling part ( 843) according to the distance between the left ends.

That is, the length of the width of the first groove 641 is formed to be greater than the distance between the right end of the first fastening part 833 or the third fastening part 853 and the left end of the second fastening part 843 . desirable.

In other words, the length of the width of the first groove 641 is formed to be greater than the longest distance between the first fastening part 833 or the third fastening part 853 and the second fastening part 843 in the left and right direction. It is preferable to be

The second groove 642 is a space into which the first to

third extension parts

831 , 841 , 851 of the first to

third coupling protrusions

830 , 840 , and 850 are inserted. The second groove 642 is recessed from one side of the support frame 600 facing the insulating member 800 , and in the illustrated embodiment, the front side.

The second groove 642 may be defined as a portion of the first groove 641 .

Accordingly, the width (ie, the length in the left-right direction) of the second groove 642 is formed to be smaller than the width (ie, the length in the left-right direction) of the first groove 641 . The length of the width of the second groove 642 may be determined according to the length of the width of the first to

third extension parts

831 , 841 , and 851 .

That is, the length of the width of the second groove 642 is preferably formed to be greater than the width of the first to

third extension portions

831 , 841 , 851 . Also, the length of the width of the second groove 642 is the length of the width of the second groove 642 . is preferably formed to be smaller than the width of the distance between the right end of the first fastening part 833 or the third fastening part 853 and the left end of the second fastening part 843 .

In other words, the length of the width of the second groove 642 is formed to be smaller than the longest distance between the first fastening part 833 or the third fastening part 853 and the second fastening part 843 in the left-right direction. It is preferable to be

Accordingly, when the first to

third coupling protrusions

830 , 840 , 850 are inserted and coupled to the plate coupling part 640 , each

insertion part

832 , 842 , 852 and each

coupling part

833 , 843 , 853 are It is not drawn out through the second groove 642 . Accordingly, the coupling state between the support frame 600 and the insulating member 800 may be stably maintained.

In other words, the first protrusion 643 and the second protrusion 644 are positioned adjacent to one side of the support frame 600 facing the insulating member 800 , and the front side in the illustrated embodiment. In addition, the first protrusion 643 and the second protrusion 644 extend in a direction away from the insulating member 800 from the one side surface of the support frame 600 .

A depth (ie, a length in the front-rear direction) of the second groove 642 may be determined according to lengths of the first protrusion 643 and the second protrusion 644 extending toward the insulating member 800 . That is, the depth of the second groove 642 may be equal to the length in which the first protrusion 643 and the second protrusion 644 extend toward the insulating member 800 .

A height (ie, a length in the vertical direction) of the first protrusion 643 and the second protrusion 644 may be formed to be less than or equal to a length in which the first groove 641 extends in the vertical direction. In an embodiment, the height of the first protrusion 643 and the second protrusion 644 may be equal to the length in which the first groove 641 extends in the vertical direction.

A receiving groove 645 is positioned on one side of the first protrusion 643 and the second protrusion 644 opposite to the insulating member 800 , and at the rear side in the illustrated embodiment.

The receiving groove 645 includes the first to

third insertion portions

832, 842, 852 and the first to

third fastening portions

833, 843, and 853 of the first to

third coupling protrusions

830, 840, and 850. is an acceptable space. The receiving groove 645 may be defined as a space in which the first groove 641 is partitioned.

The receiving groove 645 communicates with the second groove 642 . Accordingly, the first to

third coupling portions

833, 843, and 853 of the first to

third coupling protrusions

830, 840, and 850 and the first to

third extension portions

831, 841, and 851 are continuous Two grooves 642 can be accommodated.

The receiving groove 645 may be defined as a space between a surface surrounding the first groove 641 at one side opposite to the insulating member 800 and the first protrusion 643 and the second protrusion 644 .

second protrusions

643 and 644 .

The receiving groove 645 is located farther from the insulating member 800 than the second groove 642 . That is, the receiving groove 645 is located on the rear side of the second groove 642 .

The width of the receiving groove 645 may be greater than a distance between the end of the first fastening part 833 or the third fastening part 853 and the end of the second fastening part 843 . In an embodiment, the width of the receiving groove 645 may be the same as the width of the first groove 641 .

Accordingly, in the receiving groove 645, the first to

third insertion parts

832, 842, 852 and the first to

third fastening parts

833, 843 of the first to

third coupling protrusions

830, 840, 850 are provided. 853) can be easily inserted and accommodated. In addition, the first to

third fastening portions

833 , 843 , and 853 inserted into the receiving groove 645 are not drawn out through the second groove 642 .

A detailed description of a process in which the first to

third coupling protrusions

830 , 840 , 850 are inserted and coupled to the plate coupling part 640 , and the support frame 600 and the insulating member 800 are coupled will be described later. .

(6) Description of the insulating member 800 according to another embodiment of the present invention

The electromagnetic contactor 10 according to another embodiment of the present invention includes an insulating member 800 .

The insulating member 800 prevents electrical interference from occurring between currents of different phases energized through the electromagnetic contactor 10 .

The insulating member 800 is detachably coupled to the support frame 600 . The insulating member 800 according to another embodiment of the present invention may be detachably coupled to the support frame 600 without a separate fastening member.

Furthermore, after the insulating member 800 according to another embodiment of the present invention is coupled to the support frame 600 , a state coupled to the support frame 600 may be stably maintained.

Hereinafter, the insulating member 800 according to another embodiment of the present invention will be described in detail with reference to FIGS. 27 to 31 .

The insulating member 800 is detachably inserted and coupled to the support frame 600 . The coupling is achieved by inserting the first to

third coupling protrusions

830 , 840 , and 850 of the insulating member 800 into the plate coupling part 640 of the support frame 600 . A detailed description of the bonding process will be described later.

The insulating member 800 may block electrical interference between currents of a plurality of phases energized by the electromagnetic contactor 10 . The blocking is achieved by placing the plate portion 810 of the insulating member 800 between the plurality of fixed contact portions 400 .

The insulating member 800 is formed to extend in the height direction, in the illustrated embodiment, in the vertical direction. The insulating member 800 may extend between an upper surface of the arc box 520 and a lower surface of the support frame 600 .

In an embodiment, the upper end of the insulating member 800 may be positioned at the same height as the upper surface of the arc box 520 . Also, the lower end of the insulating member 800 may be positioned at the same height as the lower surface of the support frame 600 .

The insulating member 800 is formed to extend in a direction toward the support frame 600 and a direction away from the support frame 600 , in the front-rear direction in the illustrated embodiment. In addition, the insulating member 800 is formed to have a predetermined thickness.

That is, the insulating member 800 has a plate shape in which a surface passing through the vertical direction and the front-rear direction is a cross section, and the left-right direction is a height.

The shape of the insulating member 800 may be determined to be any shape that may be detachably coupled to the support frame 600 and positioned between the plurality of fixed contact parts 400 .

The insulating member 800 may be formed of an insulating material. This is to exclude electrical interference between currents of different phases energized in the electromagnetic contactor 10 .

The insulating member 800 may be formed of a material having high rigidity and high heat resistance. This is to prevent the insulating member 800 from being damaged by the arc discharged from the arc discharge hole 522 .

In an embodiment, the insulating member 800 may be formed of synthetic resin or reinforced plastic.

A plurality of insulating members 800 may be provided. The plurality of insulating members 800 may be respectively coupled to the support frame 600 . In the illustrated embodiment, two insulating members 800 including a first insulating member 800a and a second insulating member 800b are provided.

The first insulating member 800a is detachably inserted and coupled to the first plate coupling part 640a. In addition, the second insulating member 800b is detachably inserted and coupled to the second plate coupling part 640b.

The first insulating member 800a and the second insulating member 800b are disposed to face each other. In an embodiment, the first insulating member 800a and the second insulating member 800b may be disposed in parallel.

The first insulating member 800a and the second insulating member 800b are disposed to be spaced apart from each other. A central fixed contact part 400 among the plurality of fixed contact parts 400 is positioned between the first insulating member 800a and the second insulating member 800b.

Referring again to FIG. 21 , the positional relationship between the first insulating member 800a and the second insulating member 800b and the plurality of fixed contact parts 400 will be described in detail as follows.

In the illustrated embodiment, the first insulating member 800a is located on the right side of the second insulating member 800b. The first insulating member 800a is positioned between the fixed contact part 400 positioned at the leftmost side and the fixed contact part 400 positioned at the center.

The second insulating member 800b is located on the left side of the first insulating member 800a. The second insulating member 800b is positioned between the central fixed contact part 400 and the rightmost fixed contact part 400 .

Accordingly, when the electromagnetic contactor 10 is viewed from the front in a state in which the insulating member 800 is coupled, the fixed contact unit 400 , the first insulating member 800a , and the fixed contact unit 400 in a left to right direction. , the second insulating member 800b and the fixed contact portion 400 are disposed in this order.

That is, the first insulating member 800a and the second insulating member 800b are respectively positioned between the plurality of fixed contact parts 400 provided in the electromagnetic contactor 10 . Accordingly, electrical interference may not occur between the respective fixed contact parts 400 .

Meanwhile, one side and the other side of the support frame 600 , that is, the front side and the rear side in the illustrated embodiment may be formed to be symmetrical to each other.

Accordingly, the insulating member 800 is provided in two pairs, and may be respectively coupled to the front side and the rear side of the support frame 600 . That is, a total of four insulating members 800 may be provided.

Hereinafter, for convenience of description, it is assumed that the insulating member 800 is coupled to the front side of the support frame 600 .

Also, there is a difference that the first insulating member 800a and the second insulating member 800b are coupled to the first plate coupling part 640a and the second plate coupling part 640b, but the structure is the same.

Therefore, in the following description, the first insulating member 800a and the second insulating member 800b will be collectively referred to as the insulating member 800 .

In the illustrated embodiment, the insulating member 800 includes a plate portion 810 , a coupling edge 820 , a first coupling protrusion 830 , a second coupling protrusion 840 , and a third coupling protrusion 850 . .

The plate part 810 forms the body of the insulating member 800 . The plate portion 810 is provided with a coupling edge 820 . In addition, the first to

third coupling protrusions

830 , 840 , 850 are coupled to the plate part 810 .

The plate part 810 is configured to physically and electrically separate a plurality of fixed contact parts 400 disposed adjacent to each other.

As the name suggests, the plate portion 810 is formed in a plate shape. In the illustrated embodiment, the plate portion 810 is formed in a rectangular plate shape extending in the front-rear direction and facing each other, and extending in the vertical direction and having opposite corners as each side. The plate part 810 is formed to have a predetermined thickness.

The predetermined thickness of the plate part 810 may be determined according to the arrangement method of the first to

third coupling protrusions

830 , 840 , and 850 .

Specifically, the thickness of the plate part 810 may include a surface on the outside (ie, the left side) of the first extension part 831 or a surface on the outside (ie, the left side) of the third extension part 851 and the second extension part 831 . It may be formed equal to the distance in the left-right direction between the surfaces of the outside (ie, the right side) of the part 841 .

In addition, upper and lower corners of the front side of the plate portion 810 are chamfered (tapered). That is, each corner from which the plate part 810 protrudes to the outside is chamfered. Accordingly, the user is not injured by the edge of the plate portion 810 .

The plate part 810 extends in the vertical direction by a predetermined length. The plate part 810 may extend between the upper surface of the arc box 520 and the lower end of the support frame 600 .

In an embodiment, the upper end of the plate part 810 may be located at the same height as the upper surface of the arc box. Also, the lower end of the plate part 810 may be positioned at the same height as the lower end of the support frame 600 .

Accordingly, the plate part 810 may physically and electrically separate the plurality of fixed contact parts 400 disposed adjacent to each other.

One side of the plate portion 810 facing the support frame 600, the edge of the rear side in the illustrated embodiment is defined as a coupling edge (820).

The coupling edge 820 is an edge at which the insulating member 800 is positioned adjacent to the support frame 600 . In one embodiment, the coupling edge 820 may be in contact with one side of the support frame 600 facing the coupling edge 820, the front side surface in the illustrated embodiment.

The first to

third coupling protrusions

830 , 840 , 850 are continuous on the coupling edge 820 . Specifically, the first to third coupling protrusions (830, 840, 850) are located biased to the lower side of the coupling edge (820).

The first to

third coupling protrusions

830 , 840 , and 850 are portions at which the insulating member 800 is coupled to the support frame 600 . The first to

third coupling protrusions

830 , 840 , 850 are detachably inserted and coupled to the plate coupling part 640 .

Alternatively, the

coupling protrusions

830 , 840 , 850 may be provided in three or more. In any case, it is sufficient if the number of the

coupling protrusions

830 , 840 , 850 can be detachably coupled to the plate coupling part 640 .

The first to

third coupling protrusions

830 , 840 , 850 are formed to extend from the coupling edge 820 toward the support frame 600 . The first to

third coupling protrusions

830 , 840 , 850 are located biasedly below the coupling edge 820 .

The first to

third coupling protrusions

830 , 840 , and 850 may be disposed at any position where the plate part 810 may be positioned between the plurality of fixed contact parts 400 positioned adjacent to each other.

The first to

third coupling protrusions

830 , 840 , and 850 may be formed of a material having a predetermined elasticity. As will be described later, when the first to

third coupling protrusions

830 , 840 , and 850 are inserted into the plate coupling part 640 , they are caused to be inserted with a predetermined shape deformation.

In addition, when the insertion of the first to

third coupling protrusions

830 , 840 , 850 is completed, the first to

third coupling protrusions

830 , 840 , 850 are restored to their original shape and fastened to the plate coupling part 640 . can be A detailed description thereof will be provided later.

The first to

third coupling protrusions

830 , 840 , 850 are sequentially disposed along the vertical direction of the coupling edge 820 . Specifically, the first to

third coupling protrusions

830 , 840 , and 850 may be disposed to be spaced apart from each other.

The longest distance between the first coupling protrusion 830 and the third coupling protrusion 850 in the vertical direction may be formed to be less than or equal to the height of the second groove 642 . Specifically, the distance between the upper end of the first coupling protrusion 830 and the lower end of the third coupling protrusion 850 may be shorter than the length in which the second groove 642 is recessed from the top to the bottom.

Accordingly, the first to

third coupling protrusions

830 , 840 , 850 may be inserted through the second groove 642 to be stably coupled to the plate coupling part 640 .

The first to

third coupling protrusions

830 , 840 , 850 are formed to extend from the coupling edge 820 toward the support frame 600 . The length at which the first to

third coupling protrusions

830 , 840 , and 850 are extended may be formed to be greater than or equal to the distance between the surfaces surrounding the receiving groove 645 from the front side of the support frame 600 from the rear.

In an embodiment, the length of the first to

third coupling protrusions

830 , 840 , and 850 extending may be the same as the length of the first groove 641 in the front-rear direction. In other words, the length to which the first to

third coupling protrusions

830 , 840 , and 850 extend may be equal to the sum of the lengths of the second groove 642 and the receiving groove 645 in the front-rear direction.

In the above embodiment, when the first to

third coupling protrusions

830 , 840 , 850 are inserted into the second groove 642 and the receiving groove 645 , the coupling edge 820 is the front side of the support frame 600 . can be in contact with Accordingly, even when the electromagnetic contactor 10 is operated, fluctuation of the insulating member 800 is minimized, so that the insulating member 800 may be stably coupled to the support frame 600 .

In the illustrated embodiment, the first to

third coupling protrusions

830 , 840 , 850 are formed to have a predetermined height in the direction in which the coupling edge 820 extends, that is, in the vertical direction.

In the illustrated embodiment, the height of the second coupling protrusion 840 is formed to be greater than the height of the first and

third coupling protrusions

830 and 850 . Alternatively, the height of the first and

third coupling protrusions

830 and 850 may be formed to be greater than the height of the second coupling protrusion 840 . In another embodiment, the first to

third coupling protrusions

830 , 840 , and 850 may be formed to have the same height.

The first coupling protrusion 830 is located at the top of the first to

third coupling protrusions

830 , 840 , and 850 . The first coupling protrusion 830 is disposed to be spaced apart from the second coupling protrusion 840 .

The first coupling protrusion 830 extends from the coupling edge 820 toward the support frame 600 . The first coupling protrusion 830 is inserted and coupled to the plate coupling part 640 .

The first coupling protrusion 830 may be deformed in shape by an external force and store restoring force. Specifically, the first coupling protrusion 830 may be deformed in a direction toward the inside of the coupling edge 820 when passing through the second groove 642 .

In addition, when the insertion of the first coupling protrusion 830 is completed, the first coupling protrusion 830 returns to its original shape by the stored restoring force.

Accordingly, the first coupling protrusion 830 is caught by the first protrusion 643 or the second protrusion 644 , so that the first coupling protrusion 830 may be stably accommodated in the receiving groove 645 .

The first coupling protrusion 830 is positioned to be biased toward one side in the thickness direction (ie, left and right direction) of the coupling edge 820 . In the illustrated embodiment, the first coupling protrusion 830 is located on the left side of the coupling edge 820 .

In one embodiment, the direction in which the first coupling protrusion 830 is biased may be opposite to the direction in which the second coupling protrusion 840 is biased. In addition, the direction in which the first coupling protrusion 830 is biased may be the same as the direction in which the third coupling protrusion 850 is biased.

That is, in the illustrated embodiment, the first coupling protrusion 830 and the third coupling protrusion 850 are located on the left side of the coupling edge 820 . In addition, the second coupling protrusion 840 is located to the right of the coupling edge 820 .

The first coupling protrusion 830 includes a first extension part 831 , a first insertion part 832 , and a first fastening part 833 .

The first extension portion 831 is a portion in which the first coupling protrusion 830 and the coupling edge 820 are continuous. The first extension 831 is formed to extend from the coupling edge 820 toward the support frame 600 .

The first extension 831 may be formed to have a predetermined thickness. A thickness (ie, a length in a left-right direction) of the first extension portion 831 may be formed to be less than or equal to a width of the second groove 642 .

In other words, the thickness of the first extension portion 831 may be less than or equal to the width (ie, the length in the left-right direction) of the space formed between the first and

second projections

643 and 644 .

Accordingly, the first extension portion 831 may be inserted through the second groove 642 from the front side of the second groove 642 .

The first insertion part 832 and the first fastening part 833 are continuous to one side of the first extension part 831 facing the support frame 600 and the rear end in the illustrated embodiment.

The first insertion portion 832 is a portion of the first coupling protrusion 830 that is received in the receiving groove 645 . The first insertion part 832 may be inserted into the receiving groove 645 through the second groove 642 .

In the illustrated embodiment, the first insertion portion 832 is formed such that its cross-sectional area is reduced in a direction away from the first extension portion 831 . In other words, a cross-sectional area of one end of the first insertion part 832 connected to the first extension part 831 is smaller than a cross-sectional area of the other end facing the support frame 600 .

Accordingly, in the first insertion portion 832 , a portion formed with a small cross-sectional area is first inserted into the second groove 642 . Accordingly, the first insertion part 832 may be easily inserted into the second groove 642 .

In a portion where the first insertion portion 832 and the first extension portion 831 are continuous, the first fastening portion 833 protrudes outward. Accordingly, it can be said that the first insertion portion 832 is formed to have a greater width than the first extension portion 831 .

A first fastening part 833 is positioned on one side of the first insertion part 832 .

The first fastening part 833 prevents the first coupling protrusion 830 inserted into the receiving groove 645 from being arbitrarily drawn out. The first fastening part 833 is accommodated in the receiving groove 645 together with the first inserting part 832 .

The first fastening part 833 is formed on one side of the first insertion part 832 , in the illustrated embodiment, on the front side. In an embodiment, the first coupling part 833 may be positioned at a portion where the first extension part 831 and the first insertion part 832 are continuous.

The first fastening part 833 is formed to protrude radially outward from the side surface of the first insertion part 832 . In the illustrated embodiment, the first coupling portion 833 is formed to protrude to the left in a direction in which the first coupling protrusion 830 is biased toward the coupling edge 820 .

The first fastening part 833 may extend at a predetermined angle with one side of the first insertion part 832 , and a left side in the illustrated embodiment. In an embodiment, the first fastening part 833 may extend perpendicularly to a side surface of the first inserting part 832 .

One end of the first fastening portion 833 opposite to the first insertion portion 832 , in the illustrated embodiment, the left end may be located outside the surface of the plate portion 640 . That is, when viewed from the front side, the one end of the first fastening part 833 is located more left than the surface of the plate part 640 .

The first fastening part 833 may extend obliquely toward the end of the first insertion part 832 in a direction away from the first extension part 831 . In other words, the first fastening part 833 may be formed to be inclined toward the end of the first inserting part 832 in the direction (ie, the front side) toward the support frame 600 .

That is, the first fastening part 833 is formed to have a reduced cross-sectional area as it moves away from the first extension part 831 .

Accordingly, the first coupling protrusion 830 has the shape of an arrow or a hook extending in the direction toward the support frame 600 when viewed from the upper side.

Accordingly, the first coupling protrusion 830 may be easily inserted into the plate coupling part 640 . Also, when the first coupling protrusion 830 is inserted into the plate coupling part 640 , the first coupling part 833 comes into contact with the first protrusion 643 and the second protrusion 644 . Accordingly, the first coupling protrusion 830 is not arbitrarily drawn out from the plate coupling portion 640 .

The second coupling protrusion 840 is positioned between the first coupling protrusion 830 and the third coupling protrusion 850 . The second coupling protrusion 840 is disposed to be spaced apart from the first coupling protrusion 830 and the third coupling protrusion 850 , respectively.

The second coupling protrusion 840 extends from the coupling edge 820 toward the support frame 600 . The second coupling protrusion 840 is inserted and coupled to the plate coupling part 640 .

The second coupling protrusion 840 is deformed in shape by an external force and may store a restoring force. Specifically, the second coupling protrusion 840 may be deformed in a direction toward the inside of the coupling edge 820 when passing through the second groove 642 .

In addition, when the insertion of the second coupling protrusion 840 is completed, the second coupling protrusion 840 returns to its original shape by the stored restoring force.

Accordingly, the second coupling protrusion 840 is caught by the first protrusion 643 or the second protrusion 644 , so that the second coupling protrusion 840 may be stably accommodated in the receiving groove 645 .

The second coupling protrusion 840 is positioned to be biased toward one side in the thickness direction (ie, the left and right direction) of the coupling edge 820 . In the illustrated embodiment, the second coupling protrusion 840 is located biased to the right of the coupling edge 820 .

In one embodiment, the direction in which the second coupling protrusion 840 is biased may be opposite to the direction in which the first coupling protrusion 830 and the third coupling protrusion 850 are biased.

That is, in the illustrated embodiment, the second coupling protrusion 840 is located biased to the right side of the coupling edge 820 . In addition, the first coupling protrusion 830 and the third coupling protrusion 850 are located to the left side of the coupling edge 820 .

The second coupling protrusion 840 includes a second extension portion 841 , a second insertion portion 842 , and a second fastening portion 843 .

The second extension portion 841 is a portion in which the second coupling protrusion 840 and the coupling edge 820 are continuous. The second extension portion 841 is formed to extend from the coupling edge 820 toward the support frame 600 .

The second extension 841 may be formed to have a predetermined thickness. A thickness (ie, a left-right direction) of the second extension portion 841 may be formed to be less than or equal to the width of the second groove 642 .

In other words, the thickness of the second extension portion 841 may be less than or equal to the width (ie, the length in the left-right direction) of the space formed between the first and

second projections

643 and 644 .

Accordingly, the second extension portion 841 may be inserted through the second groove 642 from the front side of the second groove 642 .

A second insertion portion 842 and a second fastening portion 843 are continuous to one side of the second extension portion 841 facing the support frame 600 and to the rear end in the illustrated embodiment.

The second insertion portion 842 is a portion accommodated in the receiving groove 645 among portions of the second coupling protrusion 840 . The second insertion part 842 may be inserted into the receiving groove 645 through the second groove 642 .

In the illustrated embodiment, the second insertion portion 842 is formed such that its cross-sectional area is reduced in a direction away from the second extension portion 841 . In other words, the cross-sectional area of one end of the second insertion part 842 connected to the second extension part 841 is smaller than the cross-sectional area of the other end facing the support frame 600 .

Accordingly, in the second insertion portion 842 , a portion formed with a small cross-sectional area is first inserted into the second groove 642 . Accordingly, the second insertion portion 842 may be easily inserted into the second groove 642 .

In a portion where the second insertion part 842 and the second extension part 841 are continuous, the second fastening part 843 protrudes outward. Accordingly, it can be said that the second insertion portion 842 is formed to have a greater width than the second extension portion 841 .

A second fastening part 843 is positioned on one side of the second insertion part 842 .

The second fastening part 843 prevents the second coupling protrusion 840 inserted into the receiving groove 645 from being arbitrarily drawn out. The second fastening part 843 is accommodated in the receiving groove 645 together with the second inserting part 842 .

The second fastening part 843 is formed on one side of the second inserting part 842 , on the front side in the illustrated embodiment. In an embodiment, the second fastening part 843 may be positioned at a portion where the second extension part 841 and the second insertion part 842 are continuous.

The second fastening part 843 is formed to protrude radially outward from the side surface of the second insertion part 842 . In the illustrated embodiment, the second fastening part 843 is formed to protrude to the right in a direction in which the second coupling protrusion 840 is biased toward the coupling edge 820 .

It will be understood that the direction in which the second fastening part 843 protrudes is opposite to the direction in which the first fastening part 833 protrudes.

The second fastening part 843 may extend at a predetermined angle to one side of the second insertion part 842 , and a right side in the illustrated embodiment. In an embodiment, the second fastening part 843 may extend perpendicularly to a side surface of the second inserting part 842 .

One end of the second fastening part 843 opposite to the second insertion part 842 , in the illustrated embodiment, the right end may be located outside the surface of the plate part 640 . That is, when viewed from the front side, the one end of the second fastening part 843 is located more right than the surface of the plate part 640 .

The second fastening part 843 may extend obliquely toward an end of the second insertion part 842 in a direction away from the second extension part 841 . In other words, the second fastening part 843 may be formed to be inclined toward the end of the second insertion part 842 in the direction (ie, the front side) toward the support frame 600 .

That is, the second fastening part 843 is formed to have a reduced cross-sectional area as it moves away from the second extension part 841 .

Accordingly, the second coupling protrusion 840 has the shape of an arrow or a hook extending in the direction toward the support frame 600 when viewed from the upper side.

Accordingly, the second coupling protrusion 840 may be easily inserted into the plate coupling part 640 . Also, when the second coupling protrusion 840 is inserted into the plate coupling part 640 , the second coupling part 843 comes into contact with the first protrusion 643 and the second protrusion 644 . Accordingly, the second coupling protrusion 840 is not arbitrarily drawn out from the plate coupling portion 640 .

The third coupling protrusion 850 is located at the lowermost side of the first to

third coupling protrusions

830 , 840 , 850 . The third coupling protrusion 850 is disposed to be spaced apart from the second coupling protrusion 840 .

The third coupling protrusion 850 extends from the coupling edge 820 toward the support frame 600 . The third coupling protrusion 850 is inserted and coupled to the plate coupling part 640 .

The third coupling protrusion 850 is deformed in shape by an external force and may store a restoring force. Specifically, the third coupling protrusion 850 may be deformed in a direction toward the inside of the coupling edge 820 when passing through the second groove 642 .

In addition, when the insertion of the third coupling protrusion 850 is completed, the third coupling protrusion 850 returns to its original shape by the stored restoring force.

Accordingly, the third coupling protrusion 850 is caught by the first protrusion 643 or the second protrusion 644 , so that the third coupling protrusion 850 may be stably accommodated in the receiving groove 645 .

The third coupling protrusion 850 is positioned to be biased toward one side in the thickness direction (ie, left and right direction) of the coupling edge 820 . In the illustrated embodiment, the third coupling protrusion 850 is located biased to the right side of the coupling edge 820 .

In one embodiment, the direction in which the third coupling protrusion 850 is biased may be opposite to the direction in which the first coupling protrusion 830 and the third coupling protrusion 850 are biased.

That is, in the illustrated embodiment, the third coupling protrusion 850 is located biased to the right side of the coupling edge 820 . In addition, the first coupling protrusion 830 and the third coupling protrusion 850 are located to the left side of the coupling edge 820 .

The third coupling protrusion 850 includes a third extension part 851 , a third insertion part 852 , and a third fastening part 853 .

The third extension 851 is a portion in which the third coupling protrusion 850 and the coupling edge 820 are continuous. The third extension 851 extends from the coupling edge 820 toward the support frame 600 .

The third extension 851 may be formed to have a predetermined thickness. A thickness (ie, a length in the left-right direction) of the third extension 851 may be less than or equal to the width of the second groove 642 .

In other words, the thickness of the third extension portion 851 may be less than or equal to the width (ie, the length in the left-right direction) of the space formed between the first and

second projections

643 and 644 .

Accordingly, the third extension 851 may be inserted through the second groove 642 from the front side of the second groove 642 .

A third insertion portion 852 and a third fastening portion 853 are continuous on one side of the third extension portion 851 facing the support frame 600 and on the rear end in the illustrated embodiment.

The third insertion part 852 is a part accommodated in the receiving groove 645 among the parts of the third coupling protrusion 850 . The third insertion part 852 may be inserted into the receiving groove 645 through the second groove 642 .

In the illustrated embodiment, the third insertion portion 852 is formed such that its cross-sectional area is reduced in a direction away from the third extension portion 851 . In other words, the cross-sectional area of one end of the third insertion part 852 connected to the third extension part 851 is smaller than the cross-sectional area of the other end facing the support frame 600 .

Accordingly, in the third insertion portion 852 , a portion formed with a small cross-sectional area is first inserted into the second groove 642 . Accordingly, the third insertion part 852 may be easily inserted into the second groove 642 .

In a portion where the third insertion portion 852 and the third extension portion 851 are continuous, the third fastening portion 853 protrudes outward. Accordingly, it can be said that the third insertion portion 852 is formed to have a greater width than the third extension portion 851 .

A third fastening part 853 is positioned on one side of the third insertion part 852 .

The third coupling part 853 prevents the third coupling protrusion 850 inserted into the receiving groove 645 from being arbitrarily drawn out. The third fastening part 853 is accommodated in the receiving groove 645 together with the third inserting part 852 .

The third fastening part 853 is formed on one side of the third inserting part 852 , on the front side in the illustrated embodiment. In an embodiment, the third fastening part 853 may be positioned at a portion where the third extension part 851 and the third insertion part 852 are continuous.

The third fastening part 853 is formed to protrude radially outward from the side surface of the third insertion part 852 . In the illustrated embodiment, the third coupling part 853 is formed to protrude to the left in the direction in which the third coupling protrusion 850 is biased toward the coupling edge 820 .

It will be understood that the direction in which the third fastening part 853 protrudes is the same as the direction in which the first fastening part 833 protrudes. Also, it will be understood that the direction in which the third fastening part 853 protrudes is opposite to the direction in which the second fastening part 843 protrudes.

The third fastening part 853 may extend at a predetermined angle with one side of the third insertion part 852 , and a left side in the illustrated embodiment. In an embodiment, the third fastening part 853 may extend perpendicularly to a side surface of the third inserting part 852 .

One end of the third fastening portion 853 opposite to the third insertion portion 852 , in the illustrated embodiment, the left end may be located outside the surface of the plate portion 640 . That is, when viewed from the front side, the one end of the third fastening part 853 is located more left than the surface of the plate part 640 .

The third fastening part 853 may extend obliquely toward an end of the third insertion part 852 in a direction away from the third extension part 851 . In other words, the third fastening part 853 may be formed to be inclined toward the end of the third insertion part 852 in the direction (ie, the front side) toward the support frame 600 .

That is, the third fastening part 853 is formed such that its cross-sectional area decreases as it moves away from the third extension part 851 .

Accordingly, the third coupling protrusion 850 has the shape of an arrow or a hook extending in the direction toward the support frame 600 when viewed from the upper side.

Accordingly, the third coupling protrusion 850 may be easily inserted into the plate coupling portion 640 . Also, when the third coupling protrusion 850 is inserted into the plate coupling part 640 , the third coupling part 853 comes into contact with the first protrusion 643 or the second protrusion 644 . Accordingly, the third coupling protrusion 850 is not arbitrarily drawn out from the plate coupling portion 640 .

(7) Description of the process in which the insulating member 800 is coupled according to another embodiment of the present invention

The electromagnetic contactor 10 according to another embodiment of the present invention includes an insulating member 800 . The insulating member 800 is detachably coupled to the support frame 600 . A plurality of insulating members 800 are provided and are respectively positioned between the plurality of fixed contact parts 400 .

Accordingly, electrical interference between currents of different phases energized through the electromagnetic contactor 10 can be prevented.

Hereinafter, a process in which the insulating member 800 is coupled to the support frame 600 according to another embodiment of the present invention will be described in detail with reference to FIGS. 32 to 34 .

In the illustrated embodiment, two insulating members 800 including a first insulating member 800a and a second insulating member 800b are provided. The first insulating member 800a and the second insulating member 800b are respectively coupled to the first plate coupling part 640a and the second plate coupling part 640b formed on the front side of the support frame 600 .

As described above, the support frame 600 may be formed symmetrically to each other in the front-rear direction. Accordingly, the first plate coupling part 640a and the second plate coupling part 640b may be formed on the rear side of the support frame 600 .

In the above embodiment, the insulating member 800 may also be provided on the rear side of the support frame 600 . That is, the first insulating member 800a may be coupled to the first plate coupling part 640a on the rear side, and the second insulating member 800b may be coupled to the second plate coupling part 640b on the rear side.

In the following description, for convenience of understanding, a process in which the insulating member 800 is coupled to the front side of the support frame 600 will be mainly described. It will be understood that the above process may be equally applied even when the insulating member 8000 is coupled to the rear side of the support frame 600 .

Referring to FIG. 32 , a process in which the insulating member 800 is coupled to the support frame 600 is shown in a perspective view.

The insulating member 800 is disposed on the front side of the support frame 600 . The insulating member 800 is moved in a direction toward the support frame 600 , in the illustrated embodiment, toward the rear side.

In this case, two insulating members 800 are provided, including a first insulating member 800a and a second insulating member 800b. The first insulating member 800a and the second insulating member 800b move toward the first plate coupling part 640a and the second plate coupling part 640b, respectively.

In an embodiment, the lower end of the third coupling protrusion 850 of the insulating member 800 may be positioned at the same height as a surface surrounding the first groove 641 and the second groove 642 from the lower side. That is, the lower end of the third coupling protrusion 850 may be seated on the surface and inserted into the plate coupling part 640 .

Referring to FIG. 33 , a process in which the insulating member 800 is coupled to the support frame 600 is shown in a plan view.

The first to

third coupling protrusions

830 , 840 , and 850 of the insulating member 800 are inserted into the plate coupling part 640 .

Specifically, the first to

third coupling protrusions

830 , 840 , and 850 are inserted into the

respective insertion portions

832 , 842 , 852 and the

respective coupling portions

833 , 843 , 853 are first inserted into the second groove 642 . .

In this case, the first to

third coupling protrusions

830 , 840 , and 850 are formed of a material having elasticity, so that a predetermined shape deformation is possible. In addition, along the width direction (ie, left and right direction), the longest distance between the

respective insertion portions

832 , 842 , 852 and the longest distance between the

respective fastening portions

833 , 843 , 853 are greater than the width of the second groove 642 . long formed.

Accordingly, the first to

third coupling protrusions

830 , 840 , and 850 are bent toward each other to be deformed and inserted into the second groove 642 .

Specifically, the first coupling protrusion 830 and the third coupling protrusion 850, which are located on the left side of the coupling edge 820, are bent toward the right side, that is, the second coupling protrusion 840 is biased, and the shape is deformed. do.

In addition, the second coupling protrusion 840, which is located to the right of the coupling edge 820, is bent toward the left side, that is, the first coupling protrusion 830 and the third coupling protrusion 850 are biased, and the shape is deformed. .

By the shape deformation, the longest distance between the

respective insertion parts

832 , 842 , and 852 and the longest distance between the

respective fastening parts

833 , 843 , and 853 may be reduced to less than or equal to the width of the second groove 642 .

Accordingly, the first to

third coupling protrusions

830 , 840 , and 850 may be inserted through the second groove 642 to the receiving groove 645 .

In the insertion process, the insulating member 800 has the first protrusion 643 and the second protrusion 644 on the outermost side of each of the inserting

parts

832 , 842 , 852 and each of the

fastening parts

833 , 843 , 853 . It can be touched and moved.

In other words, the first to

third coupling protrusions

830 , 840 , 850 are pressed by the first protrusion 643 and the second protrusion 644 and inserted into the second groove 642 and the receiving groove 645 . are combined

Referring to FIG. 34 , a state in which the insulating member 800 is coupled to the support frame 600 is shown in a plan view.

Through the above-described process, the first to

third coupling protrusions

830 , 840 , 850 are coupled to the plate coupling part 640 .

When the coupling is completed, each of the

extensions

831 , 841 , 851 is inserted through the second groove 642 . In addition, each of the

insertion portions

832 , 842 , 852 and each of the

fastening portions

833 , 843 , 853 are accommodated in the receiving groove 645 .

At this time, as described above, the first to

third coupling protrusions

830 , 840 , 850 are deformed in shape and store restoring force. In addition, the receiving groove 645 is formed to have a wider width (ie, left and right direction) than the second groove 642 .

Furthermore, the receiving groove 645 includes the first to

third coupling protrusions

830, 840, and 850 along the left and right directions in a state in which the first to

third coupling protrusions

830, 840, and 850 are not deformed. It is formed to have a width greater than or equal to the longest distance.

Therefore, the first to third coupling projections (830, 840, 850) are restored to their original shape by the stored restoring force. That is, the first and

third coupling protrusions

830 and 850 and the second coupling protrusion 840 are bent in a direction away from each other.

In other words, the first and

third coupling protrusions

830 and 850 are bent toward the left, which is a direction biased toward the coupling edge 820 . In addition, the second coupling protrusion 840 is bent toward the right, which is a direction biased toward the coupling edge 820 .

Accordingly, each of the

insertion portions

832 , 842 , 852 and each of the

fastening portions

833 , 843 , and 853 are developed in the width direction of the receiving groove 645 .

At this time, each of the

fastening portions

833 , 843 , and 853 is positioned between the surfaces surrounding the first and

second protrusions

643 and 644 and the receiving groove 645 from the rear side. That is, each of the

fastening portions

833 , 843 , and 853 overlaps the first and

second protrusions

643 and 644 in the direction in which the insulating member 800 is inserted (ie, the front side).

Specifically, the first fastening part 833 and the third fastening part 853 overlap the first protruding part 643 in the front-rear direction. In addition, the second fastening portion 843 overlaps the second protrusion 644 in the front-rear direction.

That is, each of the

fastening parts

833 , 843 , and 853 is snap fastened or hooked to the plate coupling part 640 .

Therefore, even when a force is applied to the insulating member 800 in the direction away from the support frame 600 , that is, toward the front side in the illustrated embodiment, each of the

fastening parts

833 , 843 , 853 and each of the

protrusions

643 and 644 are applied. ) is in contact with the insulating member 800 and the support frame 600 is not separated.

Accordingly, the coupling between the insulating member 800 and the support frame 600 may be stably maintained.

In addition, it will be understood that the insulating member 800 may be separated from the support frame 600 by being separated from the plate coupling part 640 after the

respective coupling protrusions

830 , 840 , and 850 are pressed toward each other.

Furthermore, in the illustrated embodiment, the insulating member 800 is coupled to the support frame 600 in a state in which the arc box 520 is not coupled. Alternatively, it will be understood that the insulating member 800 may be coupled even in a state in which the arc box 520 is coupled to the support frame 600 (see FIG. 21 ).

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.

10: electromagnetic contactor

100: frame

110: base part

120: lower frame portion

200: drive unit

210: crossbar

211: contact bar connection

212: movable core

213: fixed part

220: elastic member

221: first elastic member

222: second elastic member

300: movable contact part

310: movable contact point

320: movable contact

321: first movable contact

322: second movable contact

400: fixed contact

410: fixed contact point

411: first fixed contact point

412: second fixed contact point

420: fixed contact block

421: first fixed contact block

422: second fixed contact block

430: fixed contact

431: first fixed contact

432: second fixed contact

500: arc sohobu

510: arc chamber

520: arc box (arc box)

521: cover part

522: arc outlet hole

523: frame coupling part

600: support frame

610: arc box coupling portion

620: fixed contact receiving unit

630: bulkhead

640: cover coupling portion (plate coupling portion)

640a: first cover coupling portion (first plate coupling portion)

640b: second cover coupling portion (second plate coupling portion)

641: first groove

642: second groove

643: first protrusion

644: second protrusion

645: receiving groove

700: cover frame

710: exterior

711: first side

712: second side

713: the third side

714: fourth side

720: rib part

721: first rib

722: second rib

730: arc space

731: first arc space portion

731a: first opening

732: second arc space portion

732a: second opening

733: third arc space portion

733a: third opening

740: arc box fastening part

741: extension

742: insertion part

743: fastening part

750: frame coupling part

750a: first frame coupling part

750b: second frame coupling part

751: extension

752: insert

753: tapered part

800: insulation member

800a: first insulating member

800b: second insulating member

810: plate part

820: bonding edge

830: first coupling protrusion

831: first extension

832: first insertion part

833: first fastening part

840: second coupling protrusion

841: second extension

842: second insertion part

843: second fastening part

850: third coupling protrusion

851: third extension

852: third insertion part

853: third fastening part

Claims

fixed contacts;

a movable contact positioned adjacent to the fixed contact and configured to be in contact with or spaced apart from the fixed contact;

a support frame for supporting the fixed contact; and

and a cover frame detachably coupled to the support frame and covering one side of the support frame,

The cover frame is

A plurality of outer surfaces spaced apart from each other and disposed to face;

a plurality of ribs positioned between the outer surfaces; and

and a frame coupling part extending from one side of the rib part and inserted and coupled to the support frame,

The frame coupling unit,

an extension portion extending from the one side of the rib portion and having a predetermined width; and

Located at the end of the extension, comprising an insert having a greater width than the extension,

electromagnetic contactor.
According to claim 1,

The extension portion is formed to have a width smaller than the thickness of the rib portion,

The insertion portion is formed to have a width greater than the thickness of the rib portion,

electromagnetic contactor.
According to claim 1,

The insert is formed in a rectangular plate shape,

At least one of the corners of the insert is chamfered (tapered),

electromagnetic contactor.
According to claim 1,

The outer surface is

a first surface formed in a plate shape having a length in one direction longer than a length in the other direction; and

and a second surface and a third surface extending from each end of the first surface in the one direction and disposed to face each other,

The rib part,

Between the second surface and the third surface, the second surface and the third surface are respectively disposed to be spaced apart,

electromagnetic contactor.
5. The method of claim 4,

The second surface and the third surface are

It is formed extending in a direction away from the first surface,

The rib part,

It is continuous with the first surface and is formed to extend by a length shorter than that of the second surface and the third surface in a direction away from the first surface,

electromagnetic contactor.
6. The method of claim 5,

The frame coupling unit,

At one edge of the rib portion facing the electromagnetic contactor, located adjacent to the end of the rib portion,

electromagnetic contactor.
5. The method of claim 4,

Between the second surface and the rib portion and between the rib portion and the third surface,

An arc space portion surrounded by the first surface, the second surface and the rib portion, the first surface, the third surface, and the rib portion is formed;

The arc space portion is in communication with the arc discharge hole of the electromagnetic contactor,

electromagnetic contactor.
8. The method of claim 7,

Among the ends in the other direction of the first surface, a fourth surface extending from an end opposite to the electromagnetic contactor is included,

The fourth side is

extending between the second side and the third side;

Continuous with the other end opposite to one side of the rib portion where the frame coupling portion is located,

electromagnetic contactor.
According to claim 1,

The support frame is

a first groove recessed from one side facing the cover frame; and

Protruding from the surface surrounding the first groove from both sides, including a first projection and a second projection facing each other,

electromagnetic contactor.
10. The method of claim 9,

The first protrusion and the second protrusion,

From the one side of the support frame, it extends in a direction opposite to the cover frame,

The depth at which the first groove is recessed is formed,

The first protrusion and the second protrusion are formed to be longer than the extended length,

electromagnetic contactor.
11. The method of claim 10,

The support frame is

a second groove which is a space formed between the first protrusion and the second protrusion; and

and a receiving groove which is in communication with the second groove and is a space formed on one side of the first and second projections opposite to the cover frame,

The extension portion of the frame coupling portion is inserted into the second groove,

The insertion portion of the frame coupling portion is inserted into the receiving groove,

electromagnetic contactor.
12. The method of claim 11,

The height of the insertion part of the frame coupling part,

formed below the height of the first groove,

electromagnetic contactor.
10. The method of claim 9,

One side of the first groove is formed open, the other side opposite to the one side is closed,

The insert is

The edge facing the other side of the first groove is chamfered (tapered),

electromagnetic contactor.
fixed contacts fixed to the support frame;

a movable contact positioned adjacent to the fixed contact and configured to be in contact with or spaced apart from the fixed contact;

an arc box positioned inside and including a space for accommodating the fixed contact and the movable contact, and an arc discharge hole communicating with the space and the outside; and

and a cover frame detachably coupled to the arc box and covering one side of the arc box,

The cover frame is

a first surface formed in a plate shape having a length in one direction longer than a length in the other direction; and

Among the ends of the other direction of the first surface, extending from one end toward the arc box, including an arc box fastening portion coupled to the arc discharge hole,

electromagnetic contactor.
15. The method of claim 14,

The arc box fastening part,

an extension extending from the one end of the first surface;

an insertion part positioned at an end of the extension part and inserted and coupled to the arc discharge hole; and

It is located at the end of the insertion portion, is formed to extend radially outward with respect to the extension direction of the extension portion, comprising a fastening portion in contact with a corner surrounding the arc discharge hole,

electromagnetic contactor.
fixed contacts;

a movable contact positioned adjacent to the fixed contact and configured to be in contact with or spaced apart from the fixed contact;

a support frame for supporting the fixed contact; and

Including an insulating member detachably coupled to the support frame,

The insulating member is

a plate portion formed in a plate shape;

a coupling edge forming one edge of the plate part; and

It is provided at the coupling edge and includes a coupling protrusion that is detachably inserted and coupled to the support frame,

The bonding protrusion,

an extension portion extending from the one side of the plate portion toward the support frame and having a predetermined width;

an insertion part positioned at an end of the extension part and extending toward the support frame; and

Protruding from one side of the insertion portion, including a fastening portion having a greater width than the extension portion,

electromagnetic contactor.
17. The method of claim 16,

The plate portion is formed to have a predetermined thickness,

The extension portion is formed to have a width smaller than the thickness of the plate portion,

electromagnetic contactor.
17. The method of claim 16,

The fastening part protrudes in the thickness direction of the plate part,

The end of one side of the fastening part,

In the thickness direction of the plate part, it is located more outside than the surface of one side of the plate part,

electromagnetic contactor.
17. The method of claim 16,

The fastening part,

protruding in the thickness direction of the plate part,

extending at a predetermined angle with the insertion part,

electromagnetic contactor.
17. The method of claim 16,

The insert is

It is formed so that its cross-sectional area decreases in a direction away from the extension,

The fastening part,

The extension and the insertion portion are positioned adjacent to a continuation point,

electromagnetic contactor.
17. The method of claim 16,

A plurality of the coupling protrusions are provided, and the plurality of coupling protrusions are disposed to be spaced apart from each other along the direction in which the coupling edge extends,

electromagnetic contactor.
22. The method of claim 21,

A plurality of the coupling projections,

a first coupling protrusion that is biased toward one side of the coupling edge;

a second coupling protrusion positioned adjacent to the first coupling protrusion and biased toward the other side opposite to the one side of the coupling edge; and

Positioned adjacent to the second coupling protrusion, comprising a third coupling protrusion that is located biased to the one side of the coupling edge,

electromagnetic contactor.
23. The method of claim 22,

The first coupling portion of the first coupling protrusion protrudes in a direction toward the one side of the coupling edge,

The second coupling portion of the second coupling protrusion protrudes in a direction toward the other side of the coupling edge,

The third coupling portion of the third coupling protrusion protrudes in a direction toward the one side of the coupling edge,

electromagnetic contactor.
17. The method of claim 16,

The plate part,

Each end of the edge of the other side opposite to the coupling edge is chamfered (tapered),

electromagnetic contactor.
17. The method of claim 16,

The support frame is

a first groove recessed in one side facing the insulating member; and

Protruding from the surface surrounding the first groove from both sides, including a first projection and a second projection facing each other,

electromagnetic contactor.
26. The method of claim 25,

The first protrusion and the second protrusion,

From the one side of the support frame, it extends in a direction opposite to the insulating member,

The depth at which the first groove is recessed is formed,

The first protrusion and the second protrusion are formed to be longer than the extended length,

electromagnetic contactor.
27. The method of claim 26,

The support frame is

a second groove which is a space formed between the first protrusion and the second protrusion; and

and a receiving groove which is in communication with the second groove and is a space formed on one side of the first and second projections opposite to the insulating member,

The extended portion of the insulating member is inserted into the second groove,

The insertion part and the fastening part of the insulating member are inserted into the receiving groove,

electromagnetic contactor.
28. The method of claim 27,

The fastening part,

In a direction in which the insulating member is inserted into the support frame, it is disposed to overlap the first protrusion and the second protrusion,

electromagnetic contactor.
17. The method of claim 16,

Each of the fixed contact and the insulating member is provided in plurality,

A plurality of the insulating member,

each positioned between a plurality of said fixed contacts,

electromagnetic contactor.
17. The method of claim 16,

The insulating member and the support frame are hook-coupled,

electromagnetic contactor.