WO2024029751A1

WO2024029751A1 - Electric/electronic component

Info

Publication number: WO2024029751A1
Application number: PCT/KR2023/009178
Authority: WO
Inventors: 안재빈
Original assignee: 엘지이노텍 주식회사
Priority date: 2022-08-03
Filing date: 2023-06-29
Publication date: 2024-02-08

Abstract

This electric/electronic component comprises: a housing including a side plate; a cover including a bottom plate coupled to the side plate and a guide protruding upward from the upper surface of the bottom plate; a printed circuit board disposed between the housing and the cover; and an adhesive member disposed between the printed circuit board, the guide, and the inner surface of the housing.

Description

battlefield

This embodiment relates to electrical equipment.

The external appearance of electrical components provided in a vehicle is formed by a housing, and a number of electronic components may be disposed within the housing.

As an example, an electrical equipment may include a housing including an internal space, electronic components disposed within the housing, and a cover coupled to the housing to cover the internal space.

According to the above structure, a plurality of fastening structures are required to couple the housing and the cover and fix the electronic components in the housing, so there is a problem of an increase in manufacturing cost due to an increase in the number of parts.

In addition, since assembly man-hours are required for the fastening structure and fastening between the housing and the printed circuit board, and the printed circuit board and the electronic components, there is a problem of low production efficiency.

The present embodiment aims to provide an electrical component that can reduce manufacturing costs by reducing the number of parts for fastening multiple components and improve production efficiency by reducing assembly man-hours.

The electrical equipment according to this embodiment includes a housing including a side plate; a cover including a lower plate coupled to the side plate and a guide protruding upward from the upper surface of the lower plate; a printed circuit board disposed between the housing and the cover; and an adhesive member disposed between the printed circuit board, the guide, and the inner surface of the housing.

A first gap is formed between the inner surface of the side plate and the outer surface of the guide, and the adhesive member may include a first protrusion disposed in the first gap.

A second gap is formed between the inner surface of the guide and the side surface of the printed circuit board, and the adhesive member may include a second protrusion disposed in the second gap.

The lower surface of the first protrusion or the lower surface of the second protrusion may be disposed above the lower surface of the printed circuit board.

The upper surface of the printed circuit board and the upper surface of the guide may be at the same height.

The housing includes a top plate disposed on an upper portion of the side plate, and the adhesive member is a horizontal member disposed between a lower surface of the upper surface plate and an upper surface of the guide and between a lower surface of the upper surface plate and an upper surface of the printed circuit board. May include wealth.

The upper surface of the guide may be at the same height as the upper surface of the printed circuit board.

A second coupling portion may be disposed on the upper surface of the cover, protruding upward from other areas and contacting the lower surface of the printed circuit board.

A rib is formed on a side of the housing, a first coupling portion is formed on a side of the cover, and the first coupling portion and the rib may be hooked.

A motor including a stator, a rotor disposed within the stator, and a shaft may be disposed on the upper part of the housing.

Through this embodiment, the housing, cover, and printed circuit board can be combined at the same time through the adhesive member, so the manufacturing cost can be lowered by reducing fastening parts and assembly man-hours, and there is an advantage of improving production efficiency.

In addition, since the combined area of the housing and cover and the printed circuit board are arranged to form the same height, there is an advantage in that the size in the vertical direction can be reduced.

In addition, since the electronic components and the housing are coupled to each other through grooves and adhesive members, separate parts for fastening between multiple components are omitted, thereby lowering the manufacturing cost, and increasing production efficiency by reducing assembly man-hours for fastening between multiple components. There are advantages to improving it.

In addition, since the height of the electronic component is compensated through the groove of the housing, the size of the component in the vertical direction can be reduced, which has the advantage of enabling miniaturization.

Figure 1 is a perspective view showing the exterior of an electrical equipment according to a first embodiment of the present invention.

Figure 2 is an exploded perspective view of an electrical equipment according to the first embodiment of the present invention.

Figure 3 is a cross-sectional view of an electrical equipment according to the first embodiment of the present invention.

Figure 4 is a perspective view showing the coupling structure of the housing and cover according to the first embodiment of the present invention.

Figure 5 is a perspective view showing the exterior of an electrical equipment according to a second embodiment of the present invention.

Figure 6 is a cross-sectional view of an electrical equipment according to a second embodiment of the present invention.

Figure 7 is an exploded perspective view of an electrical component according to a second embodiment of the present invention.

Figures 8 and 9 are diagrams for explaining the assembly process of electrical equipment according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and as long as it is within the scope of the technical idea of the present invention, one or more of the components may be optionally used between the embodiments. It can be used by combining and replacing.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention, unless explicitly specifically defined and described, are generally understood by those skilled in the art to which the present invention pertains. It can be interpreted as meaning, and the meaning of commonly used terms, such as terms defined in a dictionary, can be interpreted by considering the contextual meaning of the related technology.

Additionally, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention. In this specification, the singular may also include the plural unless specifically stated in the phrase, and when described as “at least one (or more than one) of A, B, and C,” it is combined with A, B, and C. It can contain one or more of all possible combinations.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

These terms are only used to distinguish the component from other components, and are not limited to the essence, sequence, or order of the component.

And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component. It may also include cases of being 'connected', 'combined', or 'connected' due to another component between and that other component.

In addition, when described as being formed or disposed "on top or bottom" of each component, top or bottom refers not only to cases where the two components are in direct contact with each other, but also to the top or bottom of each component. It also includes cases where one or more other components are formed or disposed between two components. Additionally, when expressed as “top (above) or bottom (bottom),” it can include the meaning of not only the upward direction but also the downward direction based on one component.

The electrical equipment according to this embodiment is provided in a vehicle and may include a converter, a pump, and an electronic control unit (ECU). However, this is an example, and the electrical equipment according to the present specification may include various devices in which at least one electronic component is disposed within a housing.

Figure 1 is a perspective view showing the appearance of an electrical equipment according to a first embodiment of the present invention, Figure 2 is an exploded perspective view of an electrical equipment according to a first embodiment of the present invention, and Figure 3 is a first embodiment of the present invention. It is a cross-sectional view of the electrical equipment according to the present invention, and Figure 4 is a perspective view showing the coupling structure of the housing and the cover according to the first embodiment of the present invention.

1 to 4, the electrical equipment 10 according to the first embodiment of the present invention may include a housing 100, a cover 200, a printed circuit board 300, and an adhesive member 400. there is.

The housing 100 can form the external shape of the electrical equipment 10. The housing 100 may have a rectangular cross-sectional shape. The housing 100 may be made of metal or plastic. One side of the housing 100 may be opened in one direction. For example, when the cover 200 is coupled to the lower surface of the housing 100, the lower surface of the housing 100 may be opened downward.

A hole 102 may be formed on the upper surface of the housing 100. The hole 102 may be located at the center of the upper surface of the housing 100. However, this is because some of the components of the electrical equipment 10 are omitted for convenience of explanation, and other components for driving the electrical equipment 10 may be disposed on the upper surface of the housing 100. As an example, a motor (not shown) may be placed on the upper part of the housing 100, and the hole 102 may be covered by combining the motor. The motor may include a motor housing, a stator disposed within the motor housing, a rotor disposed within the stator, and a shaft. The driving of the motor may be controlled by a printed circuit board 300, which will be described later.

The housing 100 may include a top plate 101 and a side plate 110. The top plate 101 is formed on the top surface of the housing 100 and may include the hole 102 described above. The side plate 110 is bent and extended downward from the edge of the top plate 101, and may form the side surface of the housing 100. The top plate 101 and the side plate 110 may be arranged perpendicular to each other. The inner surface of the corner area connecting the lower surface of the top plate 101 and the inner surface of the side plate 110 may be rounded.

A rib 115 may be formed on the outer surface of the side plate 110 in a shape that protrudes from the outer surface. The rib 115 may be hooked through the first coupling portion 270 (FIG. 4) of the cover 200, which will be described later.

The cover 200 may be coupled to one surface of the housing 100. The cover 200 may be coupled to the lower surface of the housing 100. The lower surface of the housing 100 can be covered by combining the cover 200. An internal space in which the printed circuit board 300 is placed may be formed by combining the housing 100 and the cover 200.

The cover 200 may be made of metal or plastic.

The cover 200 may include a lower plate 210 and a guide 220 that protrudes upward from the upper surface of the lower plate 210. The lower surface plate 210 may be arranged to form the lower surface of the electrical equipment 10. The lower plate 210 may be formed in a plate shape, but as shown in FIG. 4, a portion of the central area may have a shape that protrudes downward. In this case, the space within the cover 200 can be further increased. A first coupling portion 270 that protrudes upward and includes a hole into which the ribs 115 are coupled may be disposed on the side of the lower plate 210. The rib 115 may be hooked to the cover 200 through a hole in the first coupling portion 270.

As shown in FIG. 3, the side surface of the lower plate 210 may be arranged to form the same plane as the outer surface of the side plate 110 of the housing 100. The upper surface of the lower plate 210 may be coupled to the lower surface of the side plate 110.

The upper surface of the lower plate 210 may be divided into a first area and a second area by the guide 220. The first area may be formed inside the guide 220, and the second area may be formed outside the guide 220.

A second coupling portion 240 may be formed in the first area for coupling to the printed circuit board 300. The second coupling portion 240 has a shape that protrudes upward from the upper surface of the lower surface plate 210, and may include a protrusion 242 on the upper surface that protrudes upward from other areas. The protrusion 242 may be coupled to the coupling hole 310 of the printed circuit board 300, which will be described later. The second coupling portion 240 may be provided in plural and arranged to be spaced apart from each other. For example, two second coupling portions 240 may be provided and arranged to face each other with respect to the center in the upper corner area of the cover 200.

The protruding height of the second coupling portion 240 from the upper surface of the lower plate 210 may be smaller than the protruding height of the guide 220 from the upper surface of the lower plate 210. The lower surface of the printed circuit board 300 may be in contact with the upper surface of the second coupling portion 240. When the printed circuit board 300 is coupled to the cover 200, the upper surface of the printed circuit board 300 may be arranged to form the same plane as the upper surface of the guide 220.

The printed circuit board 300 may be disposed between the housing 100 and the cover 200. The printed circuit board 300 may be placed in an internal space formed by combining the housing 100 and the cover 200. At least one electronic component for driving the electrical equipment 10 may be mounted on one or both sides of the printed circuit board 300. As an example, electronic components related to driving the above-described motor may be mounted on the surface of the printed circuit board 300.

The printed circuit board 300 may be formed in a plate shape. The cross-sectional shape of the printed circuit board 300 may be formed to correspond to the cross-sectional shape of the first region.

The electrical equipment 10 may include an adhesive member 400. The adhesive member 400 may be an area where the adhesive has been hardened. The adhesive member 400 may be called a sealing member in that the space inside the electrical equipment 10 is sealed from an external area through the adhesive member 400.

The adhesive member 400 may couple the housing 100, the cover 200, and the printed circuit board 300 to each other. Since a plurality of components in the electrical component 10 can be coupled to each other through a single adhesive member 400, there is an advantage in that assembly man-hours are reduced and production efficiency is improved. The adhesive member 400 may be disposed on the inner surface of the housing 100, the inner surface of the cover 200, and the surface of the printed circuit board 300.

In detail, the adhesive member 400 may include a horizontal portion 410, a first protrusion 420, and a second protrusion 430.

The horizontal portion 410 is between the lower surface of the upper surface plate 101 of the housing 100 and the upper surface of the printed circuit board 300, and between the lower surface of the upper surface plate 101 and the upper surface of the guide 220. can be placed. At least one area of the horizontal portion 410 may be arranged parallel to the printed circuit board 300 . The area of the horizontal portion 410 disposed in a corner area connecting the lower surface of the top plate 101 and the inner surface of the side plate 110 may be rounded.

The first protrusion 420 may have a shape that protrudes downward from the lower surface of the horizontal portion 410. The first protrusion 420 may be disposed between the inner surface of the side plate 110 and the outer surface of the guide 220. A first gap for placing the first protrusion 420 may be formed between the inner surface of the side plate 110 and the outer surface of the guide 220. The inner surface of the side plate 110 and the outer surface of the guide 220 may be coupled to each other through the first protrusion 420. The lower surface of the first protrusion 420 may be disposed higher than the lower surface of the printed circuit board 300.

The second protrusion 430 may have a shape that protrudes downward from the lower surface of the horizontal portion 410. The second protrusion 430 may be disposed inside the first protrusion 420. The second protrusion 430 may be disposed between the inner surface of the guide 220 and the side surface of the printed circuit board 300. A second gap for placing the second protrusion 430 may be formed between the inner surface of the guide 220 and the side surface of the printed circuit board 300. The inner surface of the guide 220 and the side surface of the printed circuit board 300 may be coupled to each other through the second protrusion 430. The lower surface of the second protrusion 430 may be disposed higher than the lower surface of the printed circuit board 300.

According to the above structure, the housing, cover, and printed circuit board can be combined at the same time through the adhesive member, which has the advantage of lowering the manufacturing cost and improving production efficiency by reducing fastening parts and assembly man-hours. .

In addition, since the coupling area of the housing and cover and the printed circuit board are arranged to form the same height, there is an advantage that the size in the vertical direction can be reduced.

Below, the electrical equipment according to the second embodiment of the present invention will be described.

Figure 5 is a perspective view showing the appearance of an electrical equipment according to a second embodiment of the present invention, Figure 6 is a cross-sectional view of an electrical equipment according to a second embodiment of the present invention, and Figure 7 is a diagram showing the appearance of an electrical equipment according to a second embodiment of the present invention. It is an exploded perspective view of the electrical equipment according to the present invention, and FIGS. 8 and 9 are diagrams for explaining the assembly process of the electrical equipment according to the second embodiment of the present invention.

Referring to FIGS. 5 to 9 , the electrical component 20 according to the second embodiment of the present invention may include a housing 1100 and a printed circuit board 1200.

The housing 1100 can form the external shape of the electrical equipment 20. The housing 1100 may be made of plastic or metal. The housing 1100 may have a space 1102 formed therein so that the printed circuit board 1200 is placed therein. The housing 1100 may cover the upper surface of the printed circuit board 1200.

When the electrical equipment 20 according to this embodiment is a controller, a motor may be disposed below the housing 1100 and the printed circuit board 1200. The motor may include a motor housing, a stator disposed within the motor housing, a rotor and a shaft disposed within the stator. The printed circuit board 1200 is electrically connected to the motor and can control the motor.

As shown in FIG. 5, the housing 1100 may include an upper plate 1101 and a side plate 1102 that is bent and extended downward from an edge of the upper plate 1101. The top plate 1101 may form the upper surface of the electrical equipment 20, and the side plate 1102 may form the side surface of the electrical equipment 20. The side surface of the printed circuit board 1200 or the

electronic components

1210, 1220, and 1230 may be covered by the side plate 1102.

The printed circuit board 1200 may be placed in the space 1102 within the housing 1100. The printed circuit board 1200 may be formed in a plate shape. At least one electronic component may be disposed on one side or the other side of the printed circuit board 1200. As an example, a plurality of

electronic components

1210, 1220, and 1230 may be disposed on the upper surface of the printed circuit board 1200 facing the upper plate 1101 of the housing 1100. The plurality of

electronic components

1210, 1220, and 1230 may be mounted on the upper surface of the printed circuit board 1200.

The

electronic components

1210, 1220, and 1230 may have different heights. Based on the top surface of the printed circuit board 1200, the heights of the plurality of

electronic components

1210, 1220, and 1230 may be different from each other.

In detail, the plurality of

electronic components

1210, 1220, and 1230 include a first electronic component 1210 having a first height L1, and a first electronic component 1210 having a second height L2 greater than the first height L1. It may include a second electronic component 1220 and a third electronic component 1230 having a third height L3 greater than the second height L2.

The second electronic component 1220 may be disposed between the first electronic component 1210 and the third electronic component 1230.

Hereinafter, the coupling structure of the housing 1100, the

electronic components

1210, 1220, and 1230, and the printed circuit board 1200 will be described.

A groove may be formed in at least one area of the inner surface 1110 of the housing 1100 facing the plurality of

electronic components

1210, 1220, and 1230. As shown in FIGS. 6 and 7, when the lower surface of the upper plate 1101 of the housing 1100 faces the plurality of

electronic components

1210, 1220, and 1230, the second electronic component ( A first groove 1112 disposed to face the third electronic component 1220 and a second groove 1114 disposed to face the third electronic component 1230 may be formed.

The first groove 1112 and the second groove 1114 may be formed to be recessed outward from other areas of the inner surface 1110 of the housing 1100, respectively. The bottom surface of the first groove 1112 and the bottom surface of the second groove 1114 may be arranged to be stepped on the inner surface 1110 of the housing 1100. The bottom surface of the first groove 1112 may be disposed above the inner surface 1110 of the housing 1100. The bottom surface of the second groove 1114 may be disposed above the bottom surface of the first groove 1112.

The first electronic component 1210 is in contact with the inner surface 1110 of the housing 1100, the second electronic component 1220 is in contact with the bottom surface of the first groove 1112, and the third electronic component is in contact with the inner surface 1110 of the housing 1100. The component 1230 may be in contact with the bottom surface of the second groove 1114.

Meanwhile, a first protrusion 1122 may be formed in a region of the upper surface of the housing 1100 that corresponds to the formation region of the first groove 1112 and has a shape that protrudes upward from other regions. A second protrusion 1124 may be formed in an area of the upper surface of the housing 1100 corresponding to the area where the second groove 1114 is formed, and has a shape that protrudes upward from other areas. Based on the upper surface of the housing 1100, the height of the second protrusion 1124 may be greater than the height of the first protrusion 1122.

Meanwhile, in order to firmly maintain the combined state of the

electronic components

1210, 1220, 1230 and the housing 1100, and the printed circuit board 1200 and the housing 1100, the electrical component 20 includes an adhesive member ( 1300). The adhesive member 1300 may be an area where the adhesive has been hardened. The adhesive member 1300 may be disposed between the inner surface of the housing 1100 and the

electronic components

1210, 1220, and 1230.

The adhesive member 1300 includes a first adhesive portion 1310 disposed between the inner surface 1110 of the housing 1100 and the upper surface of the first electronic component 1210, the second electronic component 1220, and A second adhesive portion 1320 disposed between the bottom surface of the first groove 1112, and a third adhesive portion 1330 disposed between the third electronic component 1230 and the bottom surface of the second groove 1114. ) may include.

The first to third

adhesive parts

1310, 1320, and 1330 each have a predetermined thickness, and can firmly maintain the coupling between the housing 1100 and the

electronic components

1210, 1220, and 1230.

The cross-sectional shape of the first adhesive portion 1310 may correspond to the cross-sectional shape of the first electronic component 1210. The cross-sectional shape of the second adhesive portion 1320 may correspond to the cross-sectional shape of the second electronic component 1220. The cross-sectional shape of the third adhesive part 1330 may correspond to the cross-sectional shape of the third electronic component 1230.

When explaining the assembly process of the electrical equipment 20 according to this embodiment, first, as shown in FIGS. 8 and 9, the inner surface 1110 of the housing 1100 and the bottom surface of the first groove 1112 , apply adhesive to the bottom surface of the second groove 1114.

Next, as shown in FIG. 6, the printed circuit board 1200 on which the plurality of

electronic components

1210, 1220, and 1230 are mounted is combined with the housing 1100. In this case, each of the plurality of

electronic components

1210, 1220, and 1230 may be coupled to face the inner surface 1110, the first groove 1112, and the second groove 1114 of the housing 1100. .

Next, when the adhesive is applied, the adhesive member 1300 is formed. Accordingly, the coupling force between the printed circuit board 1200 and the housing 1100, and the plurality of

electronic components

1210, 1220, and 1230 and the housing 1100 can be firmly maintained.

According to the above structure, the electronic components and the housing are coupled to each other through grooves and adhesive members, so separate parts for fastening between multiple components are omitted, thereby lowering the manufacturing cost, and reducing the assembly time for fastening between multiple components. This has the advantage of improving production efficiency.

In the above, just because all the components constituting the embodiment of the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, terms such as 'include', 'comprise', or 'have' described above mean that the corresponding component may be present, unless specifically stated to the contrary, and therefore do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but rather to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

Claims

A housing including side plates;

a cover including a lower plate coupled to the side plate and a guide protruding upward from the upper surface of the lower plate;

a printed circuit board disposed between the housing and the cover; and

An electrical device including an adhesive member disposed between the printed circuit board, the guide, and an inner surface of the housing.
According to claim 1,

A first gap is formed between the inner surface of the side plate and the outer surface of the guide,

The adhesive member is an electrical component including a first protrusion disposed in the first gap.
According to claim 2,

A second gap is formed between the inner surface of the guide and the side surface of the printed circuit board,

The adhesive member is an electrical component including a second protrusion disposed in the second gap.
According to paragraph 3,

An electrical component in which the lower surface of the first protrusion or the lower surface of the second protrusion is disposed above the lower surface of the printed circuit board.
According to claim 1,

An electrical device in which the upper surface of the printed circuit board and the upper surface of the guide form the same height.
According to claim 1,

The housing includes a top plate disposed on top of the side plate,

The adhesive member is an electrical equipment including a horizontal portion disposed between a lower surface of the upper surface plate and an upper surface of the guide, and between a lower surface of the upper surface plate and an upper surface of the printed circuit board.
According to claim 1,

An electrical device in which the upper surface of the guide is at the same height as the upper surface of the printed circuit board.
According to claim 1,

An electrical component in which a second coupling part is disposed on the upper surface of the cover, protruding upward from other areas and contacting the lower surface of the printed circuit board.
According to claim 1,

Ribs are formed on the side of the housing,

A first coupling portion is formed on the side of the cover,

An electrical equipment in which the first coupling portion and the rib are hook-connected.
According to claim 1,

An electrical equipment in which a motor including a stator, a rotor disposed in the stator, and a shaft is disposed on the upper part of the housing.