KR101182684B1

KR101182684B1 - Solid state relay

Info

Publication number: KR101182684B1
Application number: KR1020100080541A
Authority: KR
Inventors: 김길수
Original assignee: 한국단자공업 주식회사
Priority date: 2010-08-19
Filing date: 2010-08-19
Publication date: 2012-09-17
Also published as: KR20120017752A

Abstract

The present invention relates to an electronic relay. The housing 10 forms the appearance and skeleton of the present invention. The housing 10 has a lower first space 11 open downward and an upper second space 12 open upward, and the first space 11 and the second space 12 communicate with each other. It is. A support end 16 is formed around the inner surface of the housing 10 between the first space 11 and the second space 12. A portion of the lower cover 20 is inserted into and coupled to the first space 11 of the housing 10. A side wall 22 forms an inner space 21 of the lower cover 20, and a terminal plate 30 is installed in the inner space 21. An intermediate portion of the terminal 40 is positioned between the terminal plate 30 and the lower cover 20, and the substrate connecting portion 41 of the terminal 40 protrudes from the upper portion of the terminal plate 30 and the lower portion of the terminal plate 30. A protrusion 41 ′ of the terminal 40 protrudes from the lower portion of the cover 20. One side edge of the printed circuit board 42 is seated at the front end of the side wall 22 of the lower cover 20 and the coupling piece 32 of the terminal plate 30, and the printed circuit board is mounted at the support end 16. The other edge of 42) is seated. This is achieved by the lower cover 20 being coupled to the housing 10. According to the present invention, the terminal 40 can be soldered with the printed circuit board 42 in a pre-assembled state, and the lower cover 20, the terminal plate 30, the terminal 40, and the printed circuit board 42 are integrally formed. By assembling into the housing 10 is coupled to facilitate the assembly work, there is an advantage that the heat dissipation in the structure of the housing 10 is more smooth.

Description

Electronic relay

The present invention relates to an electronic relay, and more particularly, to an electronic relay that is operated electronically by giving a printed circuit board the ability to interrupt the flow of current.

Relays are like switches, which control higher voltages and currents with lower DC voltages. The relay was conventionally made using the principle of electromagnets. In other words, when the coil is wound around the iron core and current flows therethrough, it becomes an electromagnet to generate a magnetic field, and the iron piece provided to be movable near the iron core on which the coil is wound is moved to the magnetic field so that a switching action occurs. As such, a relay that is operated by winding a coil around an iron core to make a kind of electromagnet is called a mechanical relay.

Such a mechanical relay needs to wind a coil around the iron core, and requires a lot of space for the movement of the iron piece and the installation of a spring for the return of the iron piece.

In addition, there is a problem in that noise is increased in a product in which a relay is used because operation noise occurs in the movement of the iron piece.

In order to solve this problem, a lot of researches have recently been made to provide an electronic relay in which a switching function is applied to a printed circuit board.

An object of the present invention is to satisfy the recent demand as described above, and to provide an electronic relay using a printed circuit board provided with a switching function.

Another object of the present invention is to more smoothly discharge the heat generated in the electronic relay using a printed circuit board with a switching function to the outside.

Still another object of the present invention is to provide an electronic relay which is easier to assemble.

It is still another object of the present invention to provide an electronic relay which is more robust in combination with each component of the electronic relay and has excellent waterproof performance.

According to a feature of the present invention for achieving the object as described above, the present invention is formed so that the first space is opened to the bottom and the second space is opened to the top of the first space and the first space and A housing having a support end formed around an inner surface between the second spaces, and a portion of the housing space is inserted into and fixed to the interior of the first space of the housing, and the internal space is opened to face the first space. A lower cover formed by passing a plurality of terminal slits to communicate with the outside, a terminal plate coupled to an inner space of the lower cover and having a terminal seating surface and a terminal slit formed thereon; a support end of the housing and the lower cover; A printed circuit board positioned and fixed between the terminal plates to perform a switching function, and an electrical connection between the printed circuit board and the outside And a terminal positioned at a terminal seating surface of the terminal plate and a terminal slit, the substrate connecting portion of which is connected to the printed circuit board, and a protrusion of the other end passing through the terminal slit of the lower cover. Molding liquid is injected into the inside.

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Four corners of the second space of the housing are formed with a reinforcement pillar having a cavity formed therein.

An inner space of the lower cover is formed by a side wall, and a cutout is formed at the tip of the sidewall, and a coupling piece is formed at a corresponding side of the body plate of the terminal plate, and the coupling piece is inserted and fixed to the cutout.

A hooking jaw is formed at the leading edge of the side wall of the lower cover to guide the edge of the printed circuit board, and a guide protrusion is formed at the tip of the coupling piece to be inserted into the guide groove formed on the printed circuit board.

An injection hole and an air discharge hole are respectively formed in communication with the inner space and the outside of the lower cover. The injection hole is formed in the bottom plate of the inner space, and the air discharge hole is formed along the bottom plate edge.

In the terminal plate, an injection hole is formed at a position corresponding to the injection hole of the lower cover.

A guide partition wall is formed under the lower cover to insulate the protrusions of the terminal.

The terminal slot formed on the terminal plate has a width wider than the thickness of the terminal, and a terminal support protrusion is formed to protrude from one inner surface of the terminal slot, between the tip of the terminal support protrusion and the inner surface of the opposite side of the terminal slot. The distance has a width equal to the thickness of the terminal.

According to another feature of the invention, the present invention is formed so that the first space is opened to the lower side and the second space is opened to the upper portion above the first space and the support end between the first space and the second space The housing is formed around the inner surface, a portion is inserted into the interior of the first space of the housing and fixed, and the inner space is formed to open upward facing the first space and a plurality of to communicate the interior and the outside A terminal cover is formed through the terminal slit and the guide partition is formed to the outside, a terminal plate coupled to the inner space of the lower cover, and is positioned and fixed between the support end of the housing and the lower cover and the terminal plate And a printed circuit board that performs a switching function, and performs electrical connection between the printed circuit board and the outside. A terminal having an intermediate portion located between the lower cover and the lower cover, a substrate connecting portion of one end of which is connected to the printed circuit board, and a protrusion of the other end passing through the terminal slit of the lower cover to be formed in a space formed by the guide partition wall. The molding liquid is injected into the first space.

The heat dissipation member is further installed on a surface of the printed circuit board facing the second space to discharge heat generated from the printed circuit board to the outside through the second space.

A guide through hole is formed in the terminal plate, and a first guide boss inserted into the guide through hole is formed in a corresponding position in the inner space of the lower cover, and is coupled to each other when the terminal plate is coupled to the inner space of the lower cover. .

The terminal plate is formed with a terminal through which one of the terminals penetrate, and the inner space of the lower cover is formed in a position corresponding to the second guide boss located in the terminal through the terminal plate is the inner space of the lower cover When coupled to one another.

In the electronic relay according to the present invention, the following effects can be obtained.

That is, in the electronic relay of the present invention, since the switching function is embedded in the printed circuit board, no operation noise is generated, and thus the noise performance of the electronic relay used product can be greatly increased.

In the present invention, the interior of the housing is open to the upper portion of the housing is more smoothly discharge of heat from the inside of the housing to the outside. Therefore, there is also an effect that the operation reliability of the printed circuit board inside the housing is kept constant.

In the present invention, the printed circuit board, the terminal plate, the terminal and the lower cover installed in the housing are assembled in the housing in a state made of one assembly, so the workability of the assembly work is good. In particular, since a plurality of terminals are fixed between the terminal plate and the lower cover and assembled to the housing, there is an effect that the plurality of terminals can be easily assembled.

In the present invention, the molding liquid is injected into the space between the printed circuit board and the lower cover so that the printed circuit board, the lower cover, the terminal plate, and the terminal are coupled to each other, so that water cannot penetrate into the interior of the housing and the coupling therebetween. There is also a stronger effect.

1 is a perspective view showing the appearance configuration of a preferred embodiment of the electronic relay according to the present invention.
Figure 2 is an exploded perspective view showing the configuration of an embodiment of the present invention.
3 is a cross-sectional perspective view of a housing constituting an embodiment of the present invention.
Figure 4 is a plan view showing the inner surface of the lower cover constituting an embodiment of the present invention.
Figure 5 is a top perspective view showing the configuration of a terminal plate constituting an embodiment of the present invention.
Figure 6 is a perspective view of the bottom of the terminal plate constituting the embodiment of the present invention.
Figure 7 is a perspective view showing a state in which a plurality of terminals are mounted on the terminal plate constituting an embodiment of the present invention.

Hereinafter, the configuration of a preferred embodiment of the electronic relay according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figures, the housing 10 forms the appearance of the electronic relay. The housing 10 is made of an insulating synthetic resin material in the shape of a cube. The housing 10 has an open top and bottom of a hexahedron shape. The first space 11 and the second space 12 communicate with each other in the housing 10. The first space 11 is a space formed at a lower portion of the housing 10 and is a portion where various components to be described below are located. The second space 12 is an empty space when the electronic relay is assembled into a space formed at a relatively upper portion of the housing 10.

Reinforcement pillars 14 are formed at four inner corners of the housing 10 corresponding to the second space 12. The reinforcement pillar 14 serves to maintain the strength of the housing 10 or more. The reinforcement pillar 14 has a rectangular cross section and has a cavity 14 'formed therein. That is, the reinforcement pillar 14 has a rectangular pillar shape with an empty inside.

The first space 11 and the second space 12 are not completely partitioned from each other. The first space 11 and the second space 12 are partitioned in a state in communication with each other by the support end 16 formed on the inner surface of the housing 10. The support end 16 is formed along four inner surfaces of the housing 10 so as to connect a position corresponding to a lower end of the reinforcement pillar 14 formed in the first space 11. The support end 16 protrudes from the inner surface of the housing 10 by a predetermined width. The support end 16 does not necessarily have to be the same width as a whole, nor is it necessary to be continuous.

A hook hole 18 is formed at the lower end of the housing 10. The hook hole 18 is formed in each of the two side walls of the housing 10 facing each other in the present embodiment. The hook hole 18 penetrates through the housing 10 so that the first space 11 communicates with the outside. However, the hook hole 18 may be in the form of a groove recessed in the inner surface of the housing 10.

Next, the configuration of the lower cover 20 will be described. The lower cover 20 is partially inserted into the first space 11 at the lower portion of the housing 10. The lower cover 20 serves to shield the lower portion of the housing 10. An inner space 21 is formed inside the lower cover 20. The inner space 21 is opened in the direction of the first space 11 of the housing 10. The inner space 21 of the lower cover 20 is a substantially hexahedral space. Sidewalls 22 are formed on the upper outer surface of the lower cover 20. The side wall 22 also forms the inner surface of the inner space 21.

Coupling cutouts 22 ′ are formed on the sidewalls 22. The coupling cutouts 22 ′ are formed on a total of three sidewalls 22. The coupling cutout portion 22 'is provided with a coupling piece 32 of the terminal plate 30 to be described below. The coupling cutouts 22 'are formed to be open to the front end of each side wall 22 in a quadrangular shape.

A hanger 23 is formed on an outer surface of the side wall 22. The hooking jaw 23 is a part which is hooked to the hooking hole 18 of the housing 10. The hooking jaw 23 is formed to protrude at a position corresponding to the hooking hole 18 of the outer surface of the side wall 22.

The guide partition wall 24 is formed on the lower surface of the lower cover 20. The guide partition wall 24 has a planar shape of approximately '井' shape. In each space formed by the guide partition wall 24, terminals 40 to be described below are respectively located. The center space of the space formed by the guide partition wall 24 is shielded except for the lower portion, and one side wall of each of the remaining spaces is open. As such, the terminal 40 protrudes and is located in the space formed by the guide partition wall 24. The guide partition wall 24 is divided into a total of five spaces, the center is formed in the injection hole 26 is formed, the four spaces surrounding the center where the injection hole 26 is formed in the terminal slot 25 are formed respectively. Through the terminal slot 25, the terminal 40 to be described below protrudes. The guide partition wall 24 is formed to be equal to or slightly more than the protruding length of the protruding portion 41 'of the terminal 40 to be described below.

An injection hole 26 is formed through the center of the bottom plate of the lower cover 20. The injection hole 26 is a portion for injecting the molding liquid into the first inner space 11 of the housing 10. When the molding liquid is injected by the injection hole 26, the air in the first space 11 is discharged to the outside by the air discharge hole 26 ′. The air discharge hole 26 ′ is formed on the bottom plate of the lower cover 20. In the present embodiment, the air discharge hole 26 ′ is formed at a position adjacent to four corners of the inner space 21 of the lower cover 20. For reference, the injection hole 26 may be formed at or near the center of the bottom plate of the lower cover 20. This is to allow the internal air to easily escape as air is transferred to the air discharge hole 26 ′ at the edge by the molding liquid injected through the injection hole 26 at the center side.

A plurality of support ribs 27 are formed on an upper surface of the bottom plate of the lower cover 20. The support rib 27 serves to support the terminal plate 40 to be described below. The support ribs 27 are formed at positions near the sidewalls 22 of the lower cover 20 and at positions near the center.

A first guide boss 28 is formed on the bottom plate surface of the lower cover 20, and a second guide boss 28 ′ is formed at an upper end of the support rib 27 adjacent to the injection hole 26. Is formed to protrude. These guide bosses 28 and 28 'are for guiding engagement with the terminal plate 30 which will be described below.

Guide ribs 29 are formed at upper edges of the sidewalls 22 of the lower cover 20, respectively. The guide rib 29 serves to guide the edge of the printed circuit board 42 to be described below. The guide rib 29 is formed only at three corners. However, it can be formed in all four places.

The terminal plate 30 serves to allow the terminal 40 to be described below to be fixedly installed in cooperation with the lower cover 20. In addition, the terminal 40 serves to temporarily fix the terminal 40 for soldering the terminal 40 and the printed circuit board 42. The terminal plate 30 should be made of a material having good heat resistance to withstand the heat generated during soldering of the printed circuit board 42 and the terminal 40.

The body plate 31 forms a skeleton of the terminal plate 30. The body plate 31 is formed with a variety of irregularities in the upper and lower surfaces. At the edge of the body plate 31, a coupling piece 32 seated on the cutout portion 22 'of the lower cover 20 is formed. Therefore, a total of three coupling pieces 32 are formed. The coupling piece 32 has a quadrangular plate shape to be seated on the cutout portion 32. In order to allow the coupling piece 32 to be seated on the cutout portion 22 'of the lower cover 20, the thickness of the sidewall 22 on which the cutout portion 22' is formed on the side of the body plate 31. It protrudes to the corresponding thickness. Accordingly, the body plate 31 enters into the side wall 22 of the lower cover 20 and the coupling piece 32 may be seated at the cutout 22 ′.

Guide protrusions 32 ′ protrude from the tip of the coupling piece 32. The guide protrusion 32 ′ is coupled to the guide groove 43 of the printed circuit board 42 to be described below so that the printed circuit board 42 is temporarily assembled to the terminal plate 30.

In the central portion of the body plate 31, the injection hole 33 is formed at a position corresponding to the injection hole 26 of the lower cover 20. The injection hole 33 is a portion into which the molding liquid is injected. A guide hole 34 is formed at one side of the body plate 31 corresponding to the injection hole 33. The guide hole 34 is a portion into which the first guide boss 28 of the lower cover 20 is inserted. The first guide boss 28 is inserted into the guide hole 34 so that the coupling between the lower cover 20 and the terminal plate 30 can be accurately performed.

A terminal seating surface 35 is formed at a portion of the body plate 31 facing the lower cover 20. The terminal seating surface 35 is a part where the middle portion of the terminal 40 to be described below is seated. The terminal seating surface 35 is a portion where the surfaces of two terminals 40 of the terminals 40 are respectively seated.

A terminal slot 36 is formed at a portion of the body plate 31 facing the lower cover 20. The terminal slot 36 extends in parallel along both ends of the body plate 31 and is formed slightly wider than the thickness of the terminal 40. A terminal protrusion 37 is formed on an inner surface of the terminal slot 36. A plurality of terminal protrusions 37 are formed in the terminal slots 36. The gap between the front end of the terminal protrusion 37 and the surface of the terminal slot 36 facing each other is formed to be almost equal to the thickness of the terminal 40. By forming the terminal protrusion 37 as described above, the terminal 40 is easily inserted into the terminal slot 36 while the terminal 40 is not randomly removed from the terminal slot 36.

A terminal through-hole 38 is formed through one side of the body plate 31. The terminal through hole 38 is a portion through which one terminal 40 passes. Of course, a second guide boss 28 ′ is positioned in the terminal through hole 38 together with the terminal 40. By doing so, the terminal through hole 38 also serves to guide the coupling between the terminal plate 30 and the lower cover 20 together with the second guide boss 28 '.

Four terminals 40 are used in this embodiment. The terminal 40 has a substrate connecting portion 41 formed at one end thereof, and a protrusion 41 ′ protruding to the outside through the lower cover 20 is formed at the opposite side of the substrate connecting portion 41. The portion between the substrate connecting portion 41 and the protrusion 41 ′ is a portion installed in the terminal plate 30 and is not be straight but is bent or cut in various forms.

The board connection part 41 of the terminal 40 is connected to the printed circuit board 42. That is, the printed circuit board 42 and the terminal 40 are electrically connected to each other by soldering the board connection part 41 to the printed circuit board 42. The printed circuit board 42 is formed in a plate shape and has a switching function.

One side edge of the printed circuit board 42 is seated on the support end 16 of the housing 10, and the other side edge of the printed circuit board 42 includes sidewalls of the coupling piece 32 and the lower cover 20 of the terminal plate 30. 22) It sits on top. Accordingly, the edge of the printed circuit board 42 is seated between the support end 16 of the housing 10 and the terminal plate 30 and the lower cover 20.

At the edge of the printed circuit board 42 is formed a guide groove 43 in which the guide protrusion 32 ′ formed on the coupling piece 32 of the terminal plate 30 is located. As the guide protrusion 32 ′ is inserted into the guide groove 43, the printed circuit board 42 is temporarily assembled to the terminal plate 30.

Hereinafter, the electronic relay according to the present invention having the configuration as described above will be described in detail and used.

In the present invention, the lower cover 20, the terminal plate 30, the terminal 40 and the printed circuit board 42 are coupled to the lower space 11 of the housing 10 in a state of being assembled into one assembly. To this end, the terminals 40 are first placed on the terminal plate 30. The middle portion of the terminal 40 is positioned in the terminal seating portion 35 and the terminal slot 36 of the terminal plate 30, respectively. In this case, the terminal 40 seated on the terminal slot 36 is pressed into the terminal slot 36 by the guide protrusion 32 ′ and is fixed. The terminals 40 are installed on the body plate 31 such that the board connecting portions 41 all face the same direction. One of the terminals 40 passes through the terminal through holes 38 of the body plate 31 and is mounted on the terminal seat 35.

After the terminal 40 is temporarily assembled to the body plate 31 of the terminal plate 30, the printed circuit board 42 is coupled to the body plate 31. In this case, the guide protrusion 32 ′ formed at the front end of the coupling piece 32 of the body plate 31 is inserted into the guide groove 43 of the printed circuit board 42. Subsequently, the board connection portions 41 of the terminal 40 are located at positions corresponding to the exposed portions of the circuit patterns formed on the printed circuit board 42 or are formed by inserting holes in the printed circuit board 42. To be possible. The terminal 40 is electrically connected to the printed circuit board 42 by soldering.

Next, the lower cover 20 is coupled to the terminal plate 30. The protrusion 41 ′ of the terminal 40 installed in the terminal plate 30 through the terminal slit 25 formed in the lower cover 20 is formed by the guide partition wall 24 of the lower cover 20. Located in space.

The lower cover 20 and the terminal plate 30 are coupled to each other by inserting the coupling pieces 32 of the terminal plate 30 into the cutouts 22 'of the lower cover 20, and the terminal plate. The first guide boss 28 of the lower cover 20 is positioned in the guide hole 34 of the 30, and the second guide boss 28 ′ is provided in the terminal hole 38 of the terminal plate 30. Inserted and positioned.

As described above, after the assembly of the lower cover 20, the terminal plate 30, the terminal 40 and the printed circuit board 42 is made, it is inserted into the first space 11 of the housing 10. . Portions other than the guide partition wall 24 of the lower cover 20 are inserted into the first space 11.

The lower cover 20 is inserted into the first space 11 so that the hooking jaw 23 formed on the outer surface of the lower cover 20 is hooked to the hook hole 18 of the housing 10. As the 20 and the housing 10 are coupled, the electronic relay is assembled.

In this case, the printed circuit board 42 is supported by the support end 16 of the housing 10 so that the printed circuit board 42 cannot be passed to the second space 12. That is, one edge of one surface of the printed circuit board 42 is supported by the support end 16, and the lower jaw 23 of the lower cover 20 is hooked to the hook hole 18. An assembly comprising 20 is coupled with the housing 10.

Next, the molding liquid is injected into the first space 11 through the injection hole 26 formed in the lower cover 20. When the molding liquid is injected by inserting the injector through the injection hole 26, the molding liquid is filled in the first space 11, and the air in the first space 11 is the air discharge hole 26. It exits through ') and the molding liquid is filled in the first space 11. When the molding liquid is filled in the first space 11, all the components located between one surface of the printed circuit board 42 and the bottom plate of the lower cover 20 are surrounded by the molding liquid. In addition, moisture cannot enter into the first space 11 from the outside.

The electronic relay assembled as described above is operated while the plurality of terminals 40 are electrically connected to the outside. That is, when a current flow condition causes a switching operation, the switching operation occurs in the printed circuit board 42 to cut off the flow of current and connect the current.

When the electronic relay is operated as described above, since there are no parts in which the movement occurs in the housing 10, noise is not generated at all, and the operation noise of the product in which the electronic relay is used can be eliminated or reduced.

In addition, the printed circuit board 42 is located in the first space 11 and most of one surface thereof is exposed to the second space 12, so that heat generated during operation is transferred through the second space 12. It can be discharged to the outside more smoothly. In particular, when a separate heat dissipation member is installed on the surface of the printed circuit board 42 exposed to the second space 12, the heat dissipation action may be more smoothly performed.

On the other hand, the housing 10 is to make the second space 12 open to the top. Therefore, the strength of the upper end of the housing 10 may be relatively weak. The reinforcement pillars 14 are formed at edge portions of the second space 12 of the housing 10, respectively. The strength of the portion corresponding to the second space 12 is increased.

The scope of the present invention is not limited to the embodiments described above, but may be defined by the scope of the claims, and those skilled in the art may make various modifications and alterations within the scope of the claims It is self-evident.

For example, the reinforcement pillar 14 formed in the second space 12 of the housing 10 is not necessarily required. Even if the size of the housing 10 is relatively small and the second space 12 is configured to be opened upward, the reinforcement pillar 14 may not be formed if a certain level of strength can be maintained.

In the illustrated embodiment, the lower cover 20 and the terminal plate 30 support the printed circuit board 42 together, but may be supported only by the lower cover 62.

The guide partition wall 22 of the lower cover 20 performs insulation between the terminals 40. If the terminals 40 are sufficiently separated from each other, the guide partition wall 22 is not necessarily required.

10: housing 11: first space
12: second space 14: reinforcing column
14 ': Co 16: Supporters
18: Hanging hole 20: Lower cover
21: internal space 22: side wall
22 ': Notch 23: Hanging jaw
24: guide bulkhead 25: terminal slit
26: injection hole 27: support rib
28: 1st guide boss 28 ': 2nd guide boss
29: hanger chin 30: terminal plate
31: body plate 32: coupling piece
32 ': guide protrusion 33: injection hole
34: guide hole 35: terminal seating surface
36: terminal slot 37: terminal projection
38: terminal via 40: terminal
41: substrate connection portion 41 ': projection
42: printed circuit board 43: guide groove

Claims

A housing in which a first space is formed to be opened downward and a second space is opened to an upper portion of the first space and a support end is formed around an inner surface between the first space and the second space;
A lower cover having a portion inserted into and fixed to the inside of the first space of the housing, the inner space being open to face the first space, and a plurality of terminal slits penetrating to communicate the inside and the outside;
A terminal plate coupled to an inner space of the lower cover and having a terminal seating surface and a terminal slit formed therein;
A printed circuit board positioned and fixed between the support end of the housing and the lower cover and the terminal plate to perform a switching function;
Electrical connection between the printed circuit board and the outside is located on the terminal seating surface of the terminal plate and the terminal slit, and a board connection part of one end is connected to the printed circuit board and a protrusion of the other end of the lower cover. A terminal passing through the terminal slit,
An electronic relay in which a molding liquid is injected into the first space.

The electronic relay of claim 1, wherein four corners of the second space of the housing are formed with a reinforcement pillar having a cavity formed therein.

According to claim 2, wherein the inner space of the lower cover is formed by a side wall, a cutout is formed on the front end of the side wall, a coupling piece is formed on the corresponding side of the body plate of the terminal plate is coupled to the cutout Electronic relay, characterized in that the piece is inserted and fixed.

The method of claim 3, wherein a hooking jaw is formed at the edge of the side wall of the lower cover to guide the edge of the printed circuit board, and a guide protrusion is formed at the tip of the coupling piece to be inserted into the guide groove formed on the printed circuit board. Electronic relay made with.

According to claim 4, wherein the injection hole and the air discharge hole is formed in communication with the inner space and the outside of the lower cover, respectively, the injection hole is formed in the bottom plate of the inner space, the air discharge hole along the bottom plate edge Electronic relay, characterized in that formed.

The electronic relay of claim 5, wherein an injection hole is formed at a position corresponding to the injection hole of the lower cover in the terminal plate.

The electronic relay of claim 6, wherein a guide partition wall is formed under the lower cover to insulate the protrusions of the terminal.

The terminal slot of claim 7, wherein the terminal slot formed on the terminal plate has a width wider than the thickness of the terminal, and a terminal support protrusion protrudes from one inner surface of the terminal slot, wherein the front end of the terminal support protrusion and the terminal slot are formed. An electronic relay, characterized in that the distance between the inner surface of the mating side has a width equal to the thickness of the terminal.

A housing in which a first space is formed to be opened downward and a second space is opened to an upper portion of the first space and a support end is formed around an inner surface between the first space and the second space;
A part is inserted into and fixed inside the first space of the housing, and the inner space is formed to be opened upward to face the first space, and a plurality of terminal slits are formed through the inner space to communicate with the outside. A lower cover having a guide partition formed therein;
A terminal plate coupled to the inner space of the lower cover and installed;
A printed circuit board positioned and fixed between the support end of the housing and the lower cover and the terminal plate to perform a switching function;
The electrical connection between the printed circuit board and the outside is performed, and an intermediate part is positioned between the terminal plate and the lower cover, and a board connection part of one end is connected to the printed circuit board, and a protrusion of the other end of the lower cover. A terminal located in a space formed by the guide partition wall through the terminal slit,
An electronic relay in which a molding liquid is injected into the first space.

10. The electronic relay of claim 9, wherein four corners of the second space of the housing are formed with a reinforcing pillar having a cavity formed therein.

11. The method of claim 10, wherein the inner space of the lower cover is formed by a side wall, a cutout is formed at the front end of the side wall, a coupling piece is formed on the corresponding side of the body plate of the terminal plate is coupled to the cutout Electronic relay, characterized in that the piece is inserted and fixed.

12. The method of claim 11, wherein a hooking jaw is formed at the edge of the side wall of the lower cover to guide the edge of the printed circuit board, and a guide protrusion is formed at the tip of the coupling piece to be inserted into the guide groove formed on the printed circuit board. Electronic relay made with.

The method of claim 9, wherein a heat dissipation member is further provided on a surface of the printed circuit board facing the second space to externally heat heat generated from the printed circuit board through the second space. Electronic relay characterized in that the discharge.

The terminal plate of claim 13, wherein a guide hole is formed in the terminal plate, and a first guide boss inserted into the guide hole is formed at a position corresponding to the inner space of the lower cover. Electronic relay characterized in that when coupled to each other.

15. The terminal plate of claim 14, wherein the terminal plate is formed with a terminal through which one of the terminals penetrates, and an inner space of the lower cover is formed at a position corresponding to a second guide boss located at the terminal. Electronic relay, characterized in that coupled to each other when coupled to the inner space of the lower cover.