KR102482964B1 - Cover and Converter having the same - Google Patents

Abstract

This embodiment relates to a cover and a converter including the same. A cover according to one aspect includes a base; and a side plate disposed on an edge region of the base and having at least one cutout, wherein the side plate includes a first plate and a second plate disposed adjacent to each other based on the cutout, wherein the first The plate includes a first coupling portion protruding from an outer surface, and the second plate is disposed at a position overlapping the first plate in a horizontal direction and has a through hole into which the first coupling portion is inserted. contains the junction.

Description

Cover and converter including the same {Cover and Converter having the same}

This embodiment relates to a cover and a converter including the same.

Engine electric devices (starting device, ignition device, charging device) and lighting devices are common as electric devices of automobiles, but recently, as vehicles are more electronically controlled, most systems, including chassis electric devices, are becoming electrically electronic. .

Various electrical components such as lamps, audio systems, heaters, and air conditioners installed in automobiles receive power from the battery when the car is stopped and power from the generator when driving. capacity is being used.

Recently, along with the development of the information technology industry, various new technologies (motor-type power steering, Internet, etc.) aimed at increasing the convenience of automobiles are being grafted onto vehicles, and the development of new technologies that can make the most of the current automobile system will continue in the future. Prospect.

A hybrid electric vehicle (HEV), regardless of soft or hard type, is equipped with a DC-DC converter (Low Voltage DC-DC Converter) for supplying an electric load (12V). In addition, the DCDC converter, which serves as a generator (alternator) of a general gasoline vehicle, supplies a voltage of 12V for an electric load by lowering the high voltage of a main battery (usually a high-voltage battery of 144V or more).

A DC-DC converter refers to an electronic circuit device that converts DC power of a certain voltage into DC power of another voltage, and is used in various fields such as television receivers and electronic parts of automobiles.

Such a converter includes a housing forming an external shape and various electronic components disposed inside the housing. Examples of the electronic component may include a substrate on which a plurality of components are mounted, a transformer for voltage regulation, and an inductor for obtaining inductance. The housing may include a base to which the electronic components are coupled to one surface, and a cover forming an internal space in which the electronic components are disposed by being coupled with the base.

The housing (cover or base) is generally formed of a metal material. In this case, the cover or base may be manufactured by press-processing thin metal.

More specifically, the housing may be manufactured through processes such as bending, cutting, and bonding a single metal plate according to design conditions. In addition, at least one cutout area may be included in the metal plate material for a three-dimensional implementation of the housing. For example, two divided plates partitioned by the incision area may be coupled through screws. This can be achieved by passing a single screw through the overlapping region of the two split plates.

However, since the coupling structure as described above requires a separate screw, there is a problem in that the number of parts increases and the manufacturing cost increases. In addition, when an error occurs in the dimensions of the through hole for coupling the screw, there is a problem in that the coupling force is lowered and the production efficiency is hindered.

The present invention has been proposed to improve the above problems, and to provide a cover and a converter including the cover that can reduce the manufacturing cost according to the reduction in the number of parts.

The cover according to this embodiment includes a base; and a side plate disposed on an edge region of the base and having at least one cutout, wherein the side plate includes a first plate and a second plate disposed adjacent to each other based on the cutout, wherein the first The plate includes a first coupling portion protruding from an outer surface, and the second plate is disposed at a position overlapping the first plate in a horizontal direction and has a through hole into which the first coupling portion is inserted. It includes a coupling portion, wherein the first coupling portion protrudes outward from the outer surface of the first plate and is fitted into the through hole, and is bent from an end of the first bent portion so that an inner surface of the second plate It includes a second bent portion in contact with the outer surface.

The converter according to the present embodiment includes a housing in which one or more elements are disposed on one surface and a refrigerant flows on the other surface; and a cover coupled to at least one of one surface and the other surface of the housing, wherein the cover comprises: a base; and a side plate disposed at an edge region of the base and having at least one cutout, wherein the side plate includes a first plate and a second plate disposed adjacent to each other based on the cutout, wherein the first The plate includes a first coupling portion protruding from an outer surface, and the second plate is disposed at a position overlapping the first plate in a horizontal direction and has a through hole into which the first coupling portion is inserted. It includes a coupling portion, wherein the first coupling portion protrudes outward from the outer surface of the first plate and is fitted into the through hole, and is bent from an end of the first bent portion so that an inner surface of the second plate It includes a second bent portion in contact with the outer surface.

According to this embodiment, since the second plate can be fixed through the second bent portion without a separate screw in the overlapping region between the first plate and the second plate, the number of parts is reduced and the manufacturing cost is reduced.

In addition, since the overlapped region of the plurality of plates interposed with the incision has a coupling structure of the bent portion through the through hole and the jig, there is an advantage in simplifying the manufacturing process and increasing production efficiency.

1 is a cross-sectional view showing the configuration of a converter according to an embodiment of the present invention.
2 is a perspective view of a cover according to an embodiment of the present invention;
3 is an exploded view of a cover according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing a coupling process of the first plate and the second plate according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. In describing the reference numerals for the components of each drawing, the same numerals indicate the same components as much as possible, even if they are displayed on different drawings.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being 'connected', 'coupled' or 'connected' to another element, the element may be directly connected, coupled or connected to the other element, but not between the element and the other element. It should be understood that another component may be 'connected', 'coupled' or 'connected' between elements.

1 is a cross-sectional view showing the configuration of a converter according to an embodiment of the present invention.

Referring to FIG. 1 , a converter 10 according to an embodiment of the present invention includes one or more elements 14, 16, and 18 disposed on one surface of a housing and a refrigerant pipe 20 disposed on the other surface of the housing. do.

A converter according to the present embodiment is an electronic device provided in automobiles, air conditioners, and the like, and refers to an electronic circuit device that converts a power source of a certain voltage into a power source of another voltage. For example, the converter 10 may be a DC-DC converter. However, the configuration according to the present embodiment is not limited thereto, and may be applied to various electronic devices including the above-described types.

The housing has a substantially rectangular cross-sectional shape, and has elements 14, 16, and 18 for driving therein, and a refrigerant pipe 20 in which a refrigerant for absorbing heat generated from the elements 14, 16, and 18 flows. ) may be included. In this case, when the elements 14, 16, and 18 are disposed on one surface of the housing, the refrigerant pipe 20 may be disposed on the other surface of the housing.

The elements 14, 16, and 18 may include a substrate 14 on which a plurality of electronic components are mounted, a transformer 16 for voltage regulation, and an inductor 18 for obtaining inductance. This is illustrative, and it can be understood that the elements 14, 16, and 18 are included in the embodiment of the present invention if they are disposed in the converter 10 and generate heat according to operation.

A heat dissipation part 72 for increasing a cross-sectional area of an outer surface of the housing may be provided on a side surface or one of upper and lower surfaces of the housing. The heat dissipation part 72 may protrude from the outer surface of the housing. Due to this, heat generated from the inside of the housing can be more easily dissipated to the outside.

2 is a perspective view of a cover according to an embodiment of the present invention, and FIG. 3 is a development view of the cover according to an embodiment of the present invention.

In this specification, the cover may include a configuration coupled to cover any one surface of the outer surface of the converter. However, this is exemplary, and the cover described below may be understood as a concept of a housing constituting the entire outer appearance of the converter rather than covering a specific surface of the housing.

Referring to FIGS. 2 and 3 , a cover 100 may be coupled to one surface or the other surface of the housing. In more detail, the cover 100 may be coupled to cover the placement surface of the elements 14, 16, and 18 among the outer surfaces of the housing. Alternatively, the cover 100 may be coupled to cover the disposition surface of the refrigerant pipe 20 among the outer surfaces of the housing.

The cover 100 may include a base 110 and side plates 120 extending from the base 110 . The base 110 and the side plate 120 may be formed by press processing a single metal plate material.

The base 110 is formed in a plate shape and may cover one surface or the other surface of the housing. A heat dissipation part 107 protruding from the outer surface of the base 110 may be provided. The heat dissipation part 107 increases the cross-sectional area of the base 110. Heat dissipation efficiency of the converter 10 may be increased. The base 110 may have a rectangular cross section. Alternatively, the base 110 may have an octagonal cross section so that corner regions of a rectangular cross section form one single face.

The side plate 120 may be formed by extending a part of the edge area of the base 110 to the outside. The side plate 120 may form an edge area of the base 110 . The side plate 120 extends vertically from the base 110 to cover the side surface of the housing. The side plate 120 may be formed by bending an edge region of one metal plate material, excluding the region of the base 110, in one direction.

The fixing part 101 may be disposed on some of the edge areas of the side plate 120 or the base 110 . The fixing part 101 is a configuration for coupling between the cover 100 and the housing or between the converter 10 and an area where the converter 10 is disposed, and the side plate 120 or the base ( 110) may extend outward from the edge region. A fixing hole 102 may be formed in the fixing part 101 . A screw (not shown) may be inserted into the fixing hole 102 to couple the aforementioned components.

In addition, an opening 105 may be formed in at least a portion of the area where the side plate 120 is formed, and a space in which the refrigerant pipe 20 is disposed may be formed.

An inclined plate 150 may be disposed between the side plate 120 and the base 110 . The inclined plate 150 may be inclinedly connected between the base 110 and the side plate 120 disposed perpendicular to each other. That is, an inclined surface may be formed on the inclined plate 150 . Due to the inclined surface, overall rigidity of the cover 100 may be increased.

At least one cutout may be formed in the side plate 120 . Due to the cutout, the side plate 120 may be partitioned into a plurality of regions. Since the side plate 120 is bent from the base 110 and the side plate 120 and the base 110 are vertically disposed, in order to form the side plate 120 on a single metal plate, A cutout is required to divide the side plate 120 into a plurality of plates. Therefore, the side plates 120 made of a plurality of plates due to the cutout are spaced apart from each other as shown in FIG. 3 before processing, and are disposed adjacent to each other as shown in FIG. 2 when bent from the base 110 to form a single unit. side can be formed.

Hereinafter, a coupling structure of a plurality of plates constituting the side plate 120 will be described.

4 is a cross-sectional view showing a process of coupling a first plate and a second plate according to an embodiment of the present invention.

Referring to FIGS. 2 to 4 , the side plate 120 may be partitioned into a plurality of plates due to the cutout as described above. That is, the two plates may be disposed adjacent to each other with one incision interposed therebetween. For example, as shown in FIGS. 2 and 3 , a cutout 180 may be formed between the first plate 130 and the second plate 140 . The first plate 130 may form a corner region of the side surface of the converter 100, and the second plate 140 may be a surface on which one end of the side surface of the converter 100 is connected to the corner region. there is. However, the positions of the first plate 130 and the second plate 140 are exemplary, and any two plates disposed adjacent to each other with a cutout on one of the side surfaces of the cover 100 interposed therebetween It can be defined as 1st and 2nd edition.

A first coupling part 131 may be provided on the first plate 130 . The first coupling part 131 may protrude outward from the outer surface of the first plate 130 . The first coupling part 131 may have a ring shape in cross section. A hole 132 may be formed inside the first coupling part 131 . Alternatively, a shielding surface may be formed on the inside of the first coupling part 131 to be flush with the other outer surface of the first plate 130 . That is, a region formed inside the first coupling portion 131 of the first plate 130 may be opened or shielded from the outside.

The first coupling part 131 may be formed through a drawing process. For example, the ring-shaped first coupling portion 131 may protrude from the plate member around the hole by pressing a single plate member having a hole with a jig having a larger cross-sectional area than the hole.

The second plate 140 may include a second coupling part 141 so as to overlap at least a portion of the outer surface of the first plate 130 . That is, when the second plate 140 is bent with respect to the base 110 , the second coupling part 141 may overlap the first plate 130 in a horizontal direction. Structurally, it can be understood that the second coupling part 141 is disposed outside the first plate 130 . That is, the inner surface of the second coupling part 141 is disposed to face the outer surface of the first plate 130 .

A through hole 143 is formed in a region of the second plate 140 facing the first coupling part 131 . The ring-shaped first coupler 131 may pass through the through hole 143 (a). A cross-sectional shape of the through hole 143 may correspond to a cross-sectional shape of an outer circumferential surface of the first coupler 131 .

Referring to FIG. 4 , when the first plate 130 and the second plate 140 are coupled, the first coupling part 131 is inserted into the through hole 143 . Due to this, the first coupling part 131 may protrude outside the through hole 143 .

Next, the end surface of the protruding first coupling part 131 is pressed through a jig so that the end surface comes into contact with the outer surface of the second coupling part 141 (b). That is, when the end side area of the first coupling part 131 protruding outward from the through hole 143 is pressed inward through the jig, the end side area of the first coupling part 131 moves inward. can be bent At this time, when the jig presses the end side area of the first coupling part 131, a separate jig for supporting may be disposed on the inner surface of the first coupling part 130 facing the jig.

Through the above process, the first plate 130 includes a first bent portion 135 that is bent outward from the outer surface of the first plate 130 and passes through the through hole 143, and the through hole 143. The second bent part 139 may be bent so that an end side area of the first bent part 135 disposed outside the hole 143 comes into contact with the outer surface of the second plate 140 . A cross-sectional shape of the second bent portion 139 may be formed in a ring shape.

An outer surface of the second bent part 139 may be exposed to the outside, and an inner surface of the second bent part 139 may contact the outer surface of the second plate 140 . At this time, the thickness of the second bent portion 139 may be made thinner than the thickness of other regions of the first plate 130 by pressing through the jig.

In other words, the second plate ( A groove may be formed in which the area around the through hole 143 of 140 is coupled. That is, an area adjacent to the through hole 143 of the second plate 140 is coupled to the groove so that the first plate 130 and the second plate 140 may be fixed.

Therefore, according to the present embodiment, the second plate 140 can be fixed through the second bent portion 139 without a separate screw in the overlapping region between the first plate 130 and the second plate 140. Therefore, there is an advantage in reducing the number of parts and reducing the manufacturing cost.

In addition, since the overlapped region of the plurality of plates interposed with the incision has a coupling structure of the bent portion through the through hole and the jig, there is an advantage in simplifying the manufacturing process and increasing production efficiency.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be selectively combined with one or more to operate. In addition, terms such as 'include', 'comprise' or 'having' described above mean that the corresponding component may be present unless otherwise stated, and thus exclude other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art 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 idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims (8)

Base; and
It is disposed on the edge region of the base and includes a side plate having at least one cutout,
The side plate includes a plurality of second plates and a first plate disposed between the plurality of second plates,
The plurality of second plates are disposed perpendicular to each other,
The first plate forms an obtuse angle with the second plate,
A cutout is disposed between the first plate and the second plate,
The first plate includes a first coupling portion protruding from an outer surface,
The second plate includes a second coupling part disposed at a position where at least a part overlaps with the first plate in a horizontal direction,
A hole is formed in a region facing the first coupling portion among the second coupling portions, and the first coupling portion includes a first bent portion that protrudes outward from an outer surface of the first plate and is inserted into the hole; A second bent portion bent from the end of the first bent portion so that the inner surface contacts the outer surface of the second plate;
The first plate is a cover disposed in a corner region of the side plate.
According to claim 1,
The base and the side plate are a cover in which a single metal plate is formed through a press process.
According to claim 1,
A thickness of the second bent portion is thinner than that of the first plate.
According to claim 1,
A cover further comprising an inclined plate connecting the base and the side plate and having an inclined surface formed thereon.
According to claim 1,
The hole has a circular cross section,
The first coupling portion cover having a ring shape in cross section.
According to claim 1,
The inner surface of the second plate is in contact with the outer surface of the first plate,
An outer surface of the second plate is in contact with an inner surface of the second bent portion.
a housing in which one or more elements are disposed on one side and a refrigerant flows on the other side; and
And a cover coupled to at least one surface of one surface or the other surface of the housing,
the cover,
Base; and
It is disposed on the edge region of the base and includes a side plate having at least one cutout,
The side plate includes a plurality of second plates and a first plate disposed between the plurality of second plates,
The plurality of second plates are disposed perpendicular to each other,
The first plate forms an obtuse angle with the second plate,
A cutout is disposed between the first plate and the second plate,
The first plate includes a first coupling portion protruding from an outer surface,
The second plate includes a second coupling part disposed at a position where at least a part overlaps with the first plate in a horizontal direction,
A hole is formed in a region facing the first coupling portion among the second coupling portions;
The first coupling part includes a first bent part protruding outward from the outer surface of the first plate and fitted into the hole, and a second bent part bent from an end of the first bent part and having an inner surface in contact with the outer surface of the second plate. Including a bend,
The first plate is disposed in a corner region of the side plate.
According to claim 7,
A converter having a heat dissipation unit protruding from the outer surface of the base on an outer surface of the base.

Images