KR102644975B1 - Electronic component housing and dc-dc converter using the same - Google Patents

Abstract

The present invention includes a first housing, a second housing, a sealing member positioned between the first housing and the second housing, and a fixing member for fixing the first housing and the second housing. An electronic component housing is provided that is insert-injected through a first housing.

Description

Electronic component housing and DC-DC converter including same {ELECTRONIC COMPONENT HOUSING AND DC-DC CONVERTER USING THE SAME}

The embodiment relates to an electronic component housing and a DC-DC converter including the same.

A hybrid vehicle that uses a motor includes a motor control unit and a DC/DC converter that controls the motor.

A DC/DC converter is a device that converts direct current voltage. It converts direct current into alternating current, transforms it, and then rectifies it again to obtain direct current.

The DC/DC converter consists of the assembly of a board and a power module. DC/DC converters have a structure that protects and seals the component boards and power modules with a housing for the purpose of waterproofing and dustproofing them.

The electronic component housing used in such a DC/DC converter places a substrate and a power module in an internal space formed by combining an upper housing and a lower housing, and forms a sealed structure using a gasket.

However, when providing a sealed structure using a gasket, there is a problem that the waterproof and dustproof function varies depending on the assembly state of the gasket. When placing a gasket between the upper housing and the lower housing and assembling it, there is a problem of sealing failure if the gasket is tilted.

Additionally, as the gasket and housing are assembled separately, additional processes are required, which results in loss of time and cost.

The embodiment provides an electronic component housing including a gasket integrated with the housing and a DC-DC converter including the same.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the description below.

Embodiments of the present invention include: a first housing; second housing; a sealing member located between the first housing and the second housing; and a fixing member for fixing the first housing and the second housing, wherein the sealing member penetrates the first housing and provides an electronic component housing that is insert-injected.

The sealing member may be disposed to be spaced inward from the outermost portion of the first housing.

The sealing member includes an upper sealing member positioned above the first housing, a lower sealing member positioned below the first housing, and a plurality of connection parts connecting the upper sealing member and the lower sealing member. 1 A connection hole through which the connection part passes may be formed in the housing.

The second housing may be formed with a receiving groove to accommodate the lower sealing member.

The length of the lower sealing member may be longer than the depth of the receiving groove.

The first housing may include a through hole through which the fixing member passes.

The second housing may include a coupling groove into which the fixing member is coupled.

A plurality of through holes may be provided, and the connecting portion may be disposed between the through holes.

The entrance of the receiving groove may be provided with an inclined portion.

The width of the receiving groove may be wider than the width of the lower sealing member.

The width of the connection part may be formed not to exceed the wider width of the upper sealing member or the lower sealing member.

It may include an electronic component storage portion where the electronic component is stored and a flow path portion through which fluid can flow.

Another embodiment of the present invention includes: a first housing; a second housing coupled to the first housing and including an electronic component storage portion in which electronic components are stored; Electronic components disposed in the electronic component storage unit; a sealing member located between the first housing and the second housing; and a fixing member for fixing the first housing and the second housing, wherein the sealing member is insert-molded into the first housing and includes an upper sealing member, a lower sealing member, and the upper sealing member and the lower sealing member. Provides a DC-DC converter including a connection part.

The second housing may be formed with a receiving groove to accommodate the lower sealing member.

According to the embodiment, there is an effect of minimizing defects that occur during gasket assembly.

In addition, there is an effect of saving time and cost by eliminating the gasket assembly process.

The various and beneficial advantages and effects of the present invention are not limited to the above-described content, and may be more easily understood through description of specific embodiments of the present invention.

1 is an exploded perspective view of an electronic component housing according to an embodiment of the present invention;
Figure 2 is a diagram showing the coupled state of the electronic component housing of Figure 1;
Figure 3 is a cross-sectional view taken along AA' of the upper housing shown in Figure 2.
Figure 4 is a diagram showing the upper housing, which is a component of Figure 1;
Figure 5 is a cross-sectional view along BB′ shown in Figure 1;
Figure 6 is a diagram showing the structure of the sealing member, which is a component of Figure 1;
Figure 7 is a cross-sectional view of DD′ shown in Figure 2,
Figure 8 is a diagram showing the structure of a DC-DC converter, which is another embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the embodiments of the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the embodiments.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a second component may be named a first component without departing from the scope of the embodiment, and similarly, the first component may also be named a second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the embodiments of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

In the description of the embodiment, when an element is described as being formed “on or under” another element, or under) includes both elements that are in direct contact with each other or one or more other elements that are formed (indirectly) between the two elements. Additionally, when expressed as "on or under," it can include not only the upward direction but also the downward direction based on one element.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

1 to 7 clearly illustrate only the main features in order to clearly understand the present invention conceptually, and as a result, various modifications of the illustration are expected, and the scope of the present invention is limited by the specific shape shown in the drawings. It doesn't have to be.

Figure 1 is an exploded perspective view of an electronic component housing according to an embodiment of the present invention, Figure 2 is a diagram showing a combined state of the electronic component housing, Figure 3 is a cross-sectional view A-A' of the upper housing, and Figure 4 is a cross-sectional view of the upper housing. It is a drawing showing the upper housing, which is a component, Figure 5 is a B-B' cross-sectional view of the electronic component housing, Figure 6 is a drawing showing the structure of the sealing member, which is a component of the present invention, and Figure 7 is a drawing showing the structure of the sealing member shown in Figure 2. This is a cross-sectional view.

1 to 7, the electronic component housing 1 according to an embodiment of the present invention includes a first housing 100, a second housing 200, a sealing member 300, and a fixing member 400. do.

The first housing 100 is located on the upper part of the second housing 200 and can be combined with the second housing 200 to form an internal space where electronic components are placed. The first housing 100 may serve as a cover when combined with the second housing 200 and may include a plurality of through holes 120 for fixing the fixing member 400.

The second housing 200 is formed with an electronic component storage portion 240 for accommodating the electronic component 500, and at the bottom is a flow path through which fluid can flow to dissipate heat generated from the electronic component 500 ( 230) can be provided.

The flow path portion 230 may dissipate heat generated from the electronic component 500 by circulating cooling water supplied through a cooling portion (not shown). There is no limit to the shape of the flow path and it can be modified into various shapes.

A coupling groove 220 for coupling the fixing member 400 may be formed in the second housing 200. The coupling groove 220 may be arranged to face the through hole 120 formed in the first housing 100. The coupling groove 220 may be fixed to the fixing member 400 by penetrating the through hole 120. In one embodiment, when a screw is used as the fixing member 400, a screw thread may be formed on the inner surface forming the coupling groove 220.

The sealing member 300 is located between the first housing 100 and the second housing 200, and can form a sealing structure of the housing through pressure of the fixing member 400. The sealing member 300 may be insert-injected through the first housing 100. A plurality of connection holes 110 may be formed in the first housing 100 to connect the sealing member 300 during insert injection.

The sealing member 300 is made of an elastic material and can increase compressive force when pressed. In one embodiment, the sealing member 300 may be made of a rubber material.

The sealing member 300 may be arranged to be spaced apart from the outermost part of the first housing 100 inward. The first housing 100 is provided to mate with the second housing 200 and can be deformed into various shapes. The sealing member 300 may be arranged to be spaced from the outermost part inward according to the shape of the first housing 100. In one embodiment, the sealing member 300 may be arranged to be spaced apart from the outermost portion of the first housing 100 at a certain distance. This can equally distribute the pressing force caused by the fixing member 400.

The sealing member 300 includes an upper sealing member 310 provided in a closed curve structure, a lower sealing member 320 provided in a closed curve structure, and a plurality of connection parts connecting the upper sealing member 310 and the lower sealing member 320. (330) can be provided.

Referring to FIG. 3 , the upper sealing member 310 contacts the upper surface of the first housing 100, and the lower sealing member 320 contacts the lower surface of the first housing 100. At this time, the connection part 330 may connect the upper sealing member 310 and the lower sealing member 320 by penetrating the connection hole 110 of the first housing 100.

The connection portion 330 may be formed through the connection hole 110 formed in the first housing 100 when the sealing member 300 is insert-molded into the first housing 100 . As shown in FIG. 4 , the connection hole 110 may be disposed between the plurality of through holes 120 formed in the first housing 100 and the through holes 120 . In one embodiment, the connection hole 110 may be disposed in a central area of the through hole 120 and the through hole 120 . When the housing is pressed using the fixing member 400, the load applied by the fixing member 400 is equally distributed between the through hole 120 and the connecting portion 330 located at the center of the through hole 120. When combined, distortion or deformation can be minimized.

Referring to FIG. 6, the width of the connection portion 330 may be formed not to exceed the width of the upper sealing member 310 or the lower sealing member 320, whichever is wider. The width of the connection portion 330 is determined depending on the size of the connection hole 110 during insert injection.

If the width of the connection part 330 is wider than the width of the upper sealing member 310 or the lower sealing member 320, problems may occur during insert injection due to problems with injection pressure. To prevent this, the width of the connection portion 330 may be limited. In one embodiment, the upper sealing member 310, lower sealing member 320, and connection portion 330 may be provided with the same width. When insert-injecting the sealing member 300, problems such as generation of voids and shape deformation can be prevented due to materials prepared with the same width and stacked sequentially.

Referring to FIG. 7, the second housing 200 may be formed with a receiving groove 210 to accommodate the lower sealing member 320. The receiving groove 210 is formed along the shape of the lower sealing member 320 and may be formed wider than the width of the lower sealing member 320. Additionally, the depth of the receiving groove 210 may be shorter than the length of the lower sealing member 320.

This means that the width (D) of the receiving groove (210) is wider than the width (d) of the sealing member (300), which means that the lower sealing member (320) is not properly inserted when assembling the first housing (100) and the second housing (200). Problems that arise can be prevented.

In addition, when the lower sealing member 320, which is longer than the depth of the receiving groove 210, is inserted into the receiving groove 210, the lower sealing member 320 of the elastic member may be deformed laterally through pressure. . The receiving groove 210, which is wider than the width of the lower sealing member 320, can accommodate deformation of the lower sealing member 320 and maintain the pressing force of the lower sealing member.

An inclined portion 212 may be formed at the entrance of the receiving groove 210. The inclined portion 212 can facilitate assembly by guiding the lower sealing member 320 into the receiving groove 210.

The fixing member 400 may form a sealed structure by combining the first housing 100 and the second housing 200. The fixing member 400 may pass through the through hole 120 formed in the first housing 100 and be coupled to the coupling groove 220 formed in the second housing 200.

In one embodiment, the fixing member 400 may be a screw. Various types of fixing members 400 may be used to couple the housing.

Meanwhile, hereinafter, a DC-DC converter according to another embodiment of the present invention will be described with reference to the attached drawings. However, the description of the same items as described in the electronic component housing according to an embodiment of the present invention will be omitted.

Figure 8 is a diagram showing the structure of a DC-DC converter, which is another embodiment of the present invention. In FIG. 8, the same reference numerals as those in FIGS. 1 to 7 indicate the same members, and detailed descriptions will be omitted.

Looking at these drawings, the DC-DC converter 2 according to another embodiment of the present invention includes a first housing 100, an electronic component that is combined with the first housing 100 and houses the electronic component 500. (500) A second housing 200 including a storage portion, an electronic component 500 disposed in the electronic component 500 storage portion, and a sealing member located between the first housing 100 and the second housing 200. (300) and a fixing member 400 for fixing the first housing 100 and the second housing 200, wherein the sealing member 300 is insert-injected into the first housing 100, It may include an upper sealing member 310, a lower sealing member 320, and a connection part 330 connecting the upper sealing member 310 and the lower sealing member 320.

The DC-DC converter (2) is a device that transforms direct current voltage. It can convert direct current into alternating current, transform it, and then rectify it to obtain direct current. Electronic components, which are components of the present invention, may include various components to realize it.

In one embodiment, the electronic component 500 may include various components such as a switching unit, transformer, and rectifier diode.

Above, embodiments of the present invention have been examined in detail with reference to the attached drawings.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications, changes, and substitutions can be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the attached drawings are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments and the attached drawings. . 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.

1: Electronic component housing
2: DC-DC converter
100: first housing
110: connection hole
120: Through hole
200: second housing
210: Acceptance home
212: slope part
220: Combination groove
230: Eurobu
240: Electronic parts storage unit
300: Sealing member
310: upper sealing member
320: Lower sealing member
330: connection part
400: fixing member
500: Electronic components

Claims (14)

first housing;
second housing;
a sealing member partially disposed between the first housing and the second housing; and
It includes a fixing member for fixing the first housing and the second housing,
The sealing member is insert-injected through the first housing,
The sealing member is,
An upper sealing member disposed on the upper surface of the first housing to surround the first housing,
A lower sealing member disposed on the lower surface of the first housing, and
Connecting the upper sealing member and the lower sealing member, and comprising a plurality of connection parts arranged at a predetermined distance from each other,
The upper sealing member and the lower sealing member are arranged side by side and spaced apart from each other,
The plurality of connection parts are arranged perpendicular to the upper sealing member and the lower sealing member,
An electronic component housing in which a connection hole through which the connection part passes is formed in the first housing. According to claim 1,
An electronic component housing in which the sealing member is arranged to be spaced apart from the outermost portion of the first housing inward. According to claim 1,
The second housing is an electronic component housing in which a receiving groove is formed to accommodate the lower sealing member. According to clause 3,
An electronic component housing in which the length of the lower sealing member is longer than the depth of the receiving groove. According to any one of claims 1 to 4,
The first housing includes a plurality of through holes through which the fixing member passes,
The connection part is an electronic component housing disposed between two adjacent through holes among the plurality of through holes. According to claim 3 or 4,
An electronic component housing where the entrance of the receiving groove is provided with an inclined portion. According to claim 3 or 4,
An electronic component housing in which the width of the receiving groove is formed to be wider than the width of the lower sealing member. first housing;
a second housing coupled to the first housing and including an electronic component storage portion in which electronic components are stored;
Electronic components disposed in the electronic component storage unit;
a sealing member partially disposed between the first housing and the second housing; and
It includes a fixing member for fixing the first housing and the second housing,
The sealing member is insert-injected through the first housing,
The sealing member includes an upper sealing member disposed on the upper surface of the first housing to surround the first housing, a lower sealing member disposed on a lower surface of the first housing, and connecting the upper sealing member and the lower sealing member. and includes a plurality of connection parts arranged at regular intervals from each other,
The upper sealing member and the lower sealing member are arranged side by side and spaced apart from each other,
The plurality of connection parts are arranged perpendicular to the upper sealing member and the lower sealing member,
A DC-DC converter in which a connection hole through which the connection part passes is formed in the first housing.
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