WO2020141688A1

WO2020141688A1 - Multi-contact point direct current relay

Info

Publication number: WO2020141688A1
Application number: PCT/KR2019/011048
Authority: WO
Inventors: 박진희
Original assignee: 엘에스일렉트릭㈜
Priority date: 2018-12-31
Filing date: 2019-08-29
Publication date: 2020-07-09
Also published as: KR102349753B1; KR20200082960A

Abstract

A multi-contact point direct current relay according to an embodiment of the present invention comprises: an enclosure; a yoke installed in the enclosure and forming a magnetic path; a plurality of bobbins installed above the yoke to be spaced apart from each other; a plurality of coils wound on the plurality of bobbins, respectively; a plurality of fixed contacts installed above the plurality of coils, respectively, to be spaced apart from each other; and a movable contact which is disposed between the plurality of fixed contacts and is operated to come into contact with or be separable from a fixed contact of the plurality of fixed contacts, wherein in a neutral state, the movable contact does not come into contact even with any fixed contact among the plurality of fixed contacts, and when a magnetic force is generated in one coil among the plurality of coils, the movable contact comes into contact with a fixed contact disposed above the one coil.

Description

Multi-contact DC relay

The present invention relates to a multi-contact DC relay, and more particularly, to a DC relay provided with a plurality of contact parts in an enclosure.

In general, a DC relay or an electro-magnetic contactor is a type of electrical circuit switching device that transmits mechanical driving and current signals using the principle of an electromagnet, and is used in various industrial equipment, machinery, and vehicles. Is installed

As is well known, the DC relay has a structure in which when the coil power is connected and a magnetic field is generated in the coil, the main contact point is connected by magnetic force to energize the main circuit.

1 and 2 show an example of a DC relay according to the prior art. 1 to 2 show the operating state of the DC relay according to the prior art. FIG. 1 is in a blocked state, and FIG. 2 is in a energized state.

1 to 2, a hinge type relay is shown. In the enclosure 1, a yoke 5 is installed around the bobbin 8 and the coil 3 and the coil 3. On one side of the yoke 5, the plate 2 is coupled by a plate spring coupling, and the movable contactor 6 is coupled to the plate 2 to move together with the plate 2. The fixed contactor 7 is installed to contact or separate the movable contactor 6.

In the blocking state (off state) as shown in FIG. 1, the coil 3 is in a non-acting (not generating magnetic field) state. Yoke (5) and plate (Plate) (2) is made of a plate spring bonding, and accordingly, the movable contact (Moving Contact) 6 and the fixed contact (Fixed Contact) is maintained in an open state. The plate 2 is plate spring-engaged to the yoke 5 to maintain a predetermined distance from the bobbin 8 supporting the coil 3 unless external force is applied. The plate spring coupling serves to prevent the plate 2 from contacting the bobbin 8 while maintaining a certain amount of spacing. At this time, the movable contactor 6 coupled to the plate 2 is in a state separated from the fixed contactor 7 and the circuit remains blocked.

2 shows an On state. When a low voltage (LV) voltage is applied to the coil 3 through the coil terminal 4, a magnetic force is generated in the coil 3. That is, a magnetic field is formed around the coil 3, and a magnetic path circulating through the yoke 5 and the plate 2 is formed. By this magnetic force, the yoke 5 is pulled in the direction where the bobbin 8 is. As long as the magnetic force is maintained, the plate 2 remains attached to the bobbin 8. At this time, the movable contactor 6 coupled to the plate 2 moves downward along the plate 2 to maintain contact with the fixed contactor 7. That is, the circuit is energized.

In the relay according to the prior art, it is customary that a single contact part (fixed contactor and movable contactor) is provided in a single enclosure.

However, when it is necessary to place a plurality of relays in a narrow space, difficulties arise when the installation space is small compared to the area occupied by the plurality of relays.

This may occur even when a relay having a different capacity is selectively provided in the same circuit.

That is, when it is necessary to install a plurality of relays, it is sometimes advantageous to have a plurality of contacts in a single product rather than separately installing a plurality of relays having a single contact.

As reference material, reference may be made to US 6426689 B1 "ELECTROMAGNETIC RELAY".

The present invention has been devised to solve the above-mentioned problems, and its purpose is to provide a DC relay having a plurality of contact parts in an enclosure.

The multi-contact DC relay according to an embodiment of the present invention is an enclosure; A yoke installed inside the enclosure to form a magnetic path; A plurality of bobbins spaced apart from each other on the upper portion of the yoke; A plurality of coils respectively wound on the plurality of bobbins; A plurality of fixed contacts spaced apart from each other on top of the plurality of coils; And a movable contactor provided singly between the plurality of fixed contacts to operate in contact with or detachable from any fixed contact among the plurality of fixed contacts. In the neutral state, the movable contactor is fixed to the plurality of fixed contacts. If a magnetic force is generated in any one of the plurality of coils without contacting any one of the fixed contacts, it is characterized in that it is in contact with the fixed contact disposed on the upper part of the one coil.

Here, the enclosure includes a plurality of side plates, and the plurality of bobbins may be respectively installed on the plurality of side plates to be spaced apart from each other.

In addition, the yoke may include a horizontal portion formed of a flat plate, and a plurality of vertical portions formed by bending at the horizontal portion and respectively coupled to the plurality of side plates.

In addition, a return member elastically supporting the movable contactor may be coupled to the plurality of bobbins, respectively.

Further, each of the return members may be composed of an elastic member.

In addition, each of the return members may be inserted and coupled to the insertion portions formed on one side of the plurality of bobbins.

In addition, each of the plurality of fixed contactors may be composed of a pair of contactors that are spaced apart from each other.

In addition, the movable member is further provided on the yoke so as to move between the plurality of coils, the movable contactor may be coupled to the moving member.

In addition, the movable member may include a shaft portion to be rotatably installed on the yoke or the enclosure.

In addition, an insertion hole through which the shaft portion may be coupled may be formed in the yoke or the enclosure.

In addition, the movable contactor may be formed of a flexible material that can be bent.

Since the multi-contact DC relay according to an embodiment of the present invention is provided with a plurality of contact portions in a single enclosure, the installation space is reduced because it is not necessary to separately install a plurality of relays.

In addition, since multiple relays are installed in a single assembly, assembly is simple and the time required for installation is reduced.

In addition, the production cost is reduced because the number of component parts such as an enclosure is reduced.

In addition, since the contact portions can be arranged in both directions or in multiple directions, installation efficiency is increased where a three-dimensional configuration is required.

1 and 2 show the internal structure of a DC relay according to the prior art. 1 and 2 show the operation state of the relay. FIG. 1 is in a blocked state, and FIG. 2 is in a energized state.

3 is a perspective view of a multi-contact (2 contact) DC relay according to an embodiment of the present invention.

Figure 4 is a perspective view showing the internal structure by removing the case in Figure 3;

5 to 7 are perspective views of a movable member, a yoke, and a movable contactor applied to a multi-contact DC relay according to an embodiment of the present invention, respectively.

8 to 10 are functional views of a multi-contact DC relay according to an embodiment of the present invention, each showing a neutral state (Off state), the first contact portion energized state, the second contact portion energized state.

11 and 12 is a top view of a multi-contact DC relay according to another embodiment of the present invention, there is shown a DC relay with four contact parts. 11 shows a neutral state, and FIG. 12 shows a first contact part energized state.

13 shows a movable contactor applied to the embodiment of FIG. 12.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail to such an extent that one of ordinary skill in the art to which the present invention pertains can easily implement the invention. It does not mean that the technical spirit and scope of the invention are limited.

The multi-contact DC relay according to each embodiment of the present invention will be described in detail with reference to the drawings.

The multi-contact DC relay according to an embodiment of the present invention includes an enclosure 10; A yoke 45 installed inside the enclosure 10 to form a magnetic path; A plurality of

bobbins

20 and 25 spaced apart from each other on the upper portion of the yoke 45; A plurality of

coils

30 and 35 respectively wound on the plurality of

bobbins

20 and 25; A plurality of fixed contacts (50,55) spaced apart from the upper portions of the plurality of coils (30,35), respectively; And a movable contactor provided singly between the plurality of

fixed contacts

50 and 55 to operate in contact or detachably with any

fixed contact

50 and 55 among the plurality of fixed contacts 50 and 55 ( 60); in the neutral state, the movable contactor 60 does not contact any one of the plurality of

fixed contacts

50 and 55, and the plurality of coils 30, If a magnetic force is generated in any one of the coils 30 among 35), it is characterized in that it is in contact with the fixed contactor 50 disposed on the upper part of any one of the coils 30.

In the present invention, a multi-contact means that a plurality of contact portions (a contact point between a fixed contact and a movable contact, or a fixed contact and a movable contact) are provided inside the enclosure. Here, the movable contactor is provided singly, and the fixed contactor is provided according to the number of contact portions. In addition, the movable contact may be provided with a movable contact corresponding to the number of contact portions, and the fixed contact may be provided with a fixed contact corresponding to the number of contact portions.

First, an example of a DC relay having two contact parts will be described.

3 is a perspective view of a two-contact DC relay according to an embodiment of the present invention, Figure 4 is a perspective view showing the internal structure by removing the case in FIG.

The enclosure 10 is provided to accommodate internal components. The enclosure 10 may be made of synthetic resin by molding injection. The enclosure 10 may be formed in a box shape.

The enclosure 10 includes a case 11 formed in a square ring shape, and a pair of side plates (or covers) 15, 16 formed in a flat plate and symmetrically coupled to both openings of the case 11. It can contain.

The case 11 may be formed to cover the first side plate 15 and the second side plate 16.

The first side plate 15 and the second side plate 16 are spaced apart from each other. The first side plate 15 and the second side plate 16 may be spaced apart from each other in a symmetrical shape. The first side plate 15 and the second side plate 16 may be respectively installed in openings formed on both sides of the case 11.

The first side plate 15 and the second side plate 16 have a yoke 45, a first bobbin 20 and a second bobbin 25, a first coil 30 and a second coil 35, and a first fixing The contactor 50 and the second fixed contactor 55, the first coil terminal 33 and the second coil terminal 37 are installed and supported.

5 to 7 illustrate a moving member, a yoke, and a movable contactor applied to a multi-contact DC relay according to an embodiment of the present invention. Let's look at this with additional reference.

The yoke 45 is installed over the first side plate 15 and the second side plate 16. The yoke 45 may be formed in a “c” shape. That is, the yoke 45 includes a horizontal portion 46 and a vertical portion 47 that is bent vertically on both sides of the horizontal portion 46.

In the center of the horizontal portion 46, the moving member 40 is installed to be movable. For example, the moving member 40 may be rotatably installed on the horizontal portion 46. At this time, an installation hole (or installation groove) 48 is formed in the horizontal portion 46 so that the movable member 40 can be rotatably installed. An axial fixing hole 49 may be formed in communication with the installation hole 48 of the horizontal portion 46. That is, in this embodiment, the moving member 40 may be coupled to the yoke 45 in the form of a hinge. Although not separately shown, the movable member 40 may be combined in various ways that can be moved to the yoke 45.

The yoke 45 may be formed of a magnetic material (for example, iron material) to form a magnetic path. That is, when the surrounding magnetic field is formed, it is magnetized to form a magnetic path.

A plurality of

bobbins

20 and 25 are provided. In this embodiment, two bobbins are provided. Each bobbin is installed spaced apart from each other. For example, they are provided on both sides of the yoke 45, respectively.

Each bobbin is installed in the yoke 45 and is installed to be included in the space formed by the magnetic path formed by the yoke 45 as much as possible. For example, it may be installed inside the space formed by the magnetic path.

Each

bobbin

20 and 25 may be installed on the

side plates

15 and 16, respectively. That is, the first bobbin 20 may be installed on the first side plate 15, and the second bobbin 25 may be installed on the second side plate 16.

Since the first bobbin 20 and the second bobbin 25 may be formed symmetrically to each other, only the first bobbin 20 will be described. Matters described with respect to the first bobbin 20 may also be applied to the second bobbin 25.

The first bobbin 20 may include a cylindrical body and a flange provided at both ends of the cylindrical body.

An insertion portion 23 into which the

return members

71 and 72 can be inserted is provided on one side flange (eg, the second flange) of the first bobbin 20. The insertion portion 23 may be formed as a groove.

The first bobbin 20 may be installed on an upper portion of the yoke 45 in a lying state. In the first bobbin 20, the first flange 21 is coupled to the first side plate 15, and the second flange 22 is disposed inside the case 11.

Coils

30 and 35 are installed on the plurality of

bobbins

20 and 25, respectively. That is, the first coil 30 is wound on the first bobbin 20, and the second coil 35 is wound on the second bobbin 25.

The

coils

30 and 35 are provided with

coil terminals

33 and 37, respectively, and are exposed to the outside of the enclosure 10. The first coil terminal 33 is connected to the first coil 30, and the second coil terminal 37 is connected to the second coil 35. When control power is input through the

coil terminals

33 and 37, a magnetic field is formed in each

coil

30 and 35, and a magnetic force is generated in the yoke 45.

Since the

bobbins

20 and 25 are spaced apart, the

coils

30 and 35 are also installed spaced apart, and the magnetic field generated by the

coils

30 and 35 is formed in a specific region within the enclosure 10. For example, the magnetic field generated in the first coil 30 is formed in the left region under the enclosure 10, and the magnetic field generated in the second coil 35 is formed in the right region under the enclosure 10.

The moving member 40 is formed of a magnetic material (for example, iron) and can be moved in the direction of each bobbin or each coil (it can be sucked).

The moving member 40 may be formed in a bar or plate shape. The moving member 40 is movably coupled to the yoke 45. Although not separately illustrated, the moving member 40 may be coupled to penetrate the yoke 45 so as to be moved to the case 11.

The moving member 40 can move in both directions (for example, left and right directions, the direction of the first coil and the second coil). The moving member 40 may perform a linear motion or a rotational motion (a rotational motion about the hinge axis). The moving member 40 may move between the first coil 30 and the second coil 35 through rotational movement. To this end, a shaft portion 41 may be protruded from the moving member 40. A shaft hole 42 into which the shaft member 44 can be inserted may be formed in the shaft portion 41.

The fixed

contactors

50 and 55 are respectively installed spaced apart from each of the

coils

30 and 35. The fixed

contactors

50 and 55 are installed on the

side plates

15 and 16. That is, the first fixed contact 50 is installed on the first side plate 15, and the second fixed contact 55 is installed on the second side plate 16.

Each fixed contact (50,55) is installed on the side where each coil (30,35) is installed. That is, if the

coils

30 and 35 are divided and installed in the left and right directions, the fixed

contacts

50 and 55 are also divided and installed in the left and right directions. In other words, each of the fixed

contactors

50 and 55 may be installed directly above each

coil

30 and 35.

Each fixed contact (50,55) is provided in each pair. For example, the first fixed contact 50 is composed of a pair of a first contact 50a connected to one end of the main circuit and a second contact 50b connected to the other end of the main circuit. The first contact 50a connected to one end of the main circuit and the second contact 50b connected to the other end of the main circuit are installed spaced apart from each other. At this time, the spaced apart between the first contact (50a) and the second contact (50b) should be formed smaller than the width of the movable contact (63) of the movable contact (60).

The first fixed contactor 50 is exposed to the outside of the enclosure 10 and is connected to a load or power source. For example, the first contact 50a connected to one end of the main circuit may be connected to the power supply, and the second contact 50b connected to the other end of the main circuit may be connected to the load.

Matters applied to the first fixed contact 50 may be equally applied to the second fixed contact 55. That is, the second fixed contacts 55 may also be provided in a symmetrical pair to be spaced apart. The first fixed contact 50 is connected to the first circuit, and the second fixed contact 55 is connected to the second circuit.

The movable contactor 60 is provided. The movable contactor 60 is coupled to the moving member 40. Therefore, according to the movement of the moving member 40, the movable contactor 60 moves together with the moving member 40.

The movable contactor 60 may be formed of a bar or a plate. The movable contactor 60 includes an extension portion 61 formed of a flat plate and a contact portion 62 formed of a curved surface. Here, the contact unit 62 may include a first contact 63 that contacts the first

fixed contacts

50 and 55 and a second contact 64 that contacts the second

fixed contacts

50 and 55. That is, the movable contactor 60 is provided singly, and a plurality of movable contacts may be provided. In the example of the two-contact relay, two

movable contacts

63 and 64 are provided.

The movable contactor 60 is installed so as not to contact any fixed

contactors

50 and 55 in a neutral state. That is, it may be installed to be placed between the first fixed contact 50 and the second fixed contact 55 (for example, at an intermediate point).

Return members

71 and 72 are provided. The

return members

71 and 72 elastically support the moving member 40 and the movable contactor 60 in a neutral state to be located in a central position (neutral position). The return member (71,72) when a magnetic force is generated in any one of the plurality of coils (30,35), the movable member (40) and the movable contactor (60) are moved so that the movable contactor (60) is any one of the above. It is possible to make contact with the fixed contactor installed in the direction of the coil, and when the magnetic force is lost, the elastic restoring force is exerted so that the moving member 40 and the movable contactor 60 are again located in the central position (neutral position). .

The

return members

71 and 72 may be coupled to the first bobbin 20 and the second bobbin 25, respectively. For example, the first return member 71 may be inserted and coupled to the first insertion portion 23 of the first bobbin 20.

The

return members

71 and 72 may be composed of elastic members, for example, springs. That is, the

return members

71 and 72 may be composed of coil springs or leaf springs.

Since the

return members

71 and 72 are respectively provided on the first bobbin 20 and the second bobbin 25 to provide elastic force, the movable contactor 60 is the center between the first bobbin 20 and the second bobbin 25 Is placed on.

The operation of the two-contact DC relay according to an embodiment of the present invention will be described with reference to FIGS. 8 to 10. 8 to 10 show a neutral state (off state, cut-off state), a first contact portion energized state, and a second contact portion energized state, respectively.

As shown in FIG. 8, in a neutral state (off state) in which control power is not input to any one coil among the plurality of

coils

30 and 35, the movable contactor 60 is selected from among the plurality of fixed

contacts

50 and 55. Since it is placed in a neutral position without contacting any single contactor, both of the main circuits (the first circuit connected to the first fixed contactor and the second circuit connected to the second fixed contactor) are not energized. That is, both main circuits are in a state where current is cut off.

Referring to FIG. 9, when control power is input to the first coil 30, a magnetic field is generated around the first coil 30 to form a magnetic path for circulating the yoke 45 and the first bobbin 20. Accordingly, the moving member 40 is pulled toward the first bobbin 20, and the movable contactor 60 moving together with the moving member 40 has the first contact 63 contacting the first fixed contact 50 The first circuit is energized. That is, the first contact portion is connected.

If the control power input to the first coil 30 is cut off and the magnetic force of the first coil 30 disappears, the moving member 40 and the movable contactor 60 are in a neutral position by the restoring force of the first return member 71. Returning to the state as shown in Fig. 8, the current of the first circuit is cut off. The connection of the first contact portion is released.

Referring to FIG. 10, when control power is input to the second coil 35, a magnetic field is generated around the second coil 35 to form a magnetic path circulating the yoke 45 and the second bobbin 25. Accordingly, the moving member 40 is pulled toward the second bobbin 25, and the movable contactor 60 moving together with the moving member 40 has the second contact 64 contacting the second fixed contact 55 The second circuit is energized. That is, the second contact portion is connected.

If the control power input to the second coil 35 is cut off and the magnetic force of the second coil 35 disappears, the moving member 40 and the movable contactor 60 are in a neutral position by the restoring force of the second return member 72. Returning to the state as shown in Fig. 8, the current of the second circuit is cut off. The connection of the second contact portion is released.

Since the two-contact DC relay according to an embodiment of the present invention is provided with two contact portions in a single enclosure, the installation space is reduced since it is not necessary to separately install the two relays.

In addition, since the effect of installing two relays in a single assembly appears, assembly is simple and the time required for installation is reduced.

In addition, since the contact portions can be arranged in both directions, installation efficiency is increased where a three-dimensional configuration is required.

Although not separately shown, in the above embodiment, the moving member may be integrally formed with the movable contactor. That is, the movable contactor is configured to be movable. The movable contactor may be formed to move by rotational movement or to be made of a flexible material. In the following embodiment, an example is shown in which the movable member is not interposed and the movable contactor is configured alone.

10 and 11 is a top view of a multi-contact DC relay according to another embodiment of the present invention, there is shown a DC relay with four contact parts.

Here, FIG. 11 shows a neutral state, and FIG. 11 shows a first contact part energized state.

Even in the case of a DC relay having three or more multi-contacts (a plurality of fixed contacts and a plurality of movable contacts, but also a movable contact is composed of a single unit), the basic configuration of each unit is the same or similar to that of the previous embodiment. It will be described mainly with different parts.

The enclosure 110 is formed in a box shape. The enclosure 110 includes four side plates 111-114. The four side plates 111 to 114 may be disposed on each side of the box-shaped enclosure.

The yoke 146 is installed inside the enclosure 110. The horizontal portion of the yoke 146 may be formed in a cross shape. At the ends of each horizontal portion, vertical portions are bent to be coupled to the respective side plates 111-114. The yoke 146 may be formed of a magnetic material to form a magnetic path.

Four bobbins 121 to 124 are installed on each side plate 111 to 114, and coils 131 to 134 are installed on each bobbin 121 to 124, respectively. That is, four coils 131 to 134 are provided. The bobbins 121 to 124 and the coils 131 to 134 are installed adjacent to the yoke 146, and when control power is input to the coils 131 to 134 to form a magnetic field, the bobbins 121 to 124 and the yoke 146 are formed. Forms a magnetic path.

Four fixed contacts 151 to 154 are installed spaced apart from the side where each coil 131 to 134 is installed. For example, each of the fixed contacts 151 to 154 may be installed spaced apart from the top of each coil 131 to 134. Each of the fixed contactors 151 to 154 is fixed to each side plate 111 to 114 and exposed to the outside of the enclosure 110 to be connected to a power source or a load.

Each of the fixed contactors 151 to 154 is provided with a pair of contactors, and is connected to each main circuit (for example, the first circuit to the fourth circuit) for each of the fixed contacts 151 to 154.

The movable contact 160 is installed between each coil 131 to 134 and each fixed contact 151 to 154. The movable contactor 60 may be installed at a point corresponding to the same distance from each coil 131 to 134.

The movable contact 160 is made of a flexible member and can be bent to contact each fixed contact 151 to 154. Alternatively, the movable contact 160 may be configured to be rotatably installed in the front, rear, left, and right directions.

13 is a cross-sectional view of the movable contact 160. The movable contactor 160 may have a lower end fixedly installed on the bottom surface of the yoke 146 or the enclosure 110. To this end, a coupling groove 163 may be formed in the lower end 162 of the movable contact 160.

A contact portion 164 is formed at an upper end portion of the movable contactor 160. The contact portion 164 may be formed in a shape such as a cylindrical or square ring. The contact portion 164 may be formed with a movable contact on each side facing each of the fixed contacts 151 to 154 so as to contact each of the fixed contacts 151 to 154. That is, in this embodiment, four movable contacts may be provided.

Return members 171 to 174 are provided to support the movable contact 160. The return members 171 to 174 allow the movable contactor 160 to remain in a neutral position that does not contact any of the fixed contacts 151 to 154 when no external force is applied, and contacts with any of the fixed contacts 151 to 154 When the control power is cut in the energized state, the elastic contact force is provided to return the movable contactor 160 to the neutral position.

Referring to FIG. 12, the first contact portion will look at the energization action. When control power is input to the first coil 131 to form a magnetic path for circulating the yoke 146 and the first bobbin 121, the movable contactor 160 is sucked in the direction of the first bobbin 121 to fix the first. The contactor 151 is contacted. Accordingly, the first circuit is energized.

When the control power input to the first coil 131 is cut off, the magnetic path circulating through the yoke 146 and the first bobbin 121 disappears, and the movable contactor 160 is in a neutral position by the elastic restoring force of the return member 171. Return to. At this time, when the movable contact 160 itself is a flexible member, it returns to the neutral position by its own restoring force.

Since it works in the same way for other contact parts, redundant description will be omitted.

Since the multi-contact DC relay according to each embodiment of the present invention is provided with a plurality of contact portions in a single enclosure, the installation space is reduced because it is not necessary to separately install a plurality of relays.

In addition, the production cost is reduced because components such as the enclosure and the movable contact are reduced.

The above-described embodiments are embodiments for implementing the present invention, and those skilled in the art to which the present invention pertains will be capable of various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. That is, the protection scope of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

Claims

Enclosure;

A yoke installed inside the enclosure to form a magnetic path;

A plurality of bobbins spaced apart from each other on the upper portion of the yoke;

A plurality of coils respectively wound on the plurality of bobbins;

A plurality of fixed contacts spaced apart from each other on top of the plurality of coils; And

It includes a movable contactor that is provided between the plurality of fixed contactors to operate in contact or detachably with any fixed contact among the plurality of fixed contacts;

In the neutral state, the movable contactor does not contact any one of the plurality of fixed contacts,

When a magnetic force is generated in any one of the plurality of coils, a multi-contact DC relay, characterized in that it is in contact with a fixed contact placed on top of any one of the coils.
The multi-contact DC relay of claim 1, wherein the enclosure includes a plurality of side plates, and the plurality of bobbins are respectively installed on the plurality of side plates to be spaced apart from each other.
The multi-contact DC relay of claim 1, wherein the yoke includes a horizontal portion formed of a flat plate, and a plurality of vertical portions formed by bending at the horizontal portion and coupled to the plurality of side plates, respectively.
The multi-contact DC relay according to claim 1, wherein a return member for elastically supporting the movable contactor is coupled to the plurality of bobbins.
5. The multi-contact DC relay according to claim 4, wherein each return member is composed of an elastic member.
According to claim 4, Each of the return member is a multi-contact DC relay is coupled to the insertion portion formed on the flange of one side of the plurality of bobbins.
The multi-contact DC relay according to claim 1, wherein each of the plurality of fixed contacts comprises a pair of contacts spaced apart from each other.
The multi-contact DC relay of claim 1, further comprising a moving member installed in the yoke so as to be movable between the plurality of coils, and the movable contactor is coupled to the moving member.
9. The multi-contact DC relay according to claim 8, wherein the moving member includes a shaft to be rotatably installed in the yoke or enclosure.
The multi-contact DC relay according to claim 9, wherein an insertion hole through which the shaft portion can be coupled is formed in the yoke or the enclosure.
The multi-contact DC relay of claim 1, wherein the movable contact is formed of a flexible material that can be bent.