KR20170059712A - Sealing structure for junction box - Google Patents

Sealing structure for junction box Download PDF

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Publication number
KR20170059712A
KR20170059712A KR1020150163998A KR20150163998A KR20170059712A KR 20170059712 A KR20170059712 A KR 20170059712A KR 1020150163998 A KR1020150163998 A KR 1020150163998A KR 20150163998 A KR20150163998 A KR 20150163998A KR 20170059712 A KR20170059712 A KR 20170059712A
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KR
South Korea
Prior art keywords
cover
gasket
contact
junction box
internal space
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KR1020150163998A
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Korean (ko)
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KR101804461B1 (en
Inventor
유현
정길우
Original Assignee
주식회사 유라코퍼레이션
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Priority to KR1020150163998A priority Critical patent/KR101804461B1/en
Publication of KR20170059712A publication Critical patent/KR20170059712A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0239—Electronic boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing

Abstract

The present invention relates to a sealing structure for a junction box, capable of improving electromagnetic wave shielding performance. The sealing structure for a junction box comprises: a body having a constant internal space and accommodating a plurality of electronic units in the internal space; a cover coupled to an upper surface of the body and sealing the internal space from the outside; and a gasket installed to be extended along a contact surface of the body and the cover between the body and the cover, and preventing water from permeating into the internal space of the body as the upper surface and the lower surface of the gasket are respectively installed to be in contact with the entire contact surface of the body and the entire contact surface of the cover.

Description

SEALING STRUCTURE FOR JUNCTION BOX [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a junction box, and more particularly, to a sealing structure of a junction box capable of improving sealing performance between a body of a junction box and a cover.

2. Description of the Related Art [0002] In general, various components and driving devices (hereinafter referred to as " electrical components ") operated by supplying electricity are mounted in a vehicle, and a junction box is provided for distributing electricity supplied from a battery to supply the electric components have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged view of a main part showing a conventional junction box sealing structure.

1, a conventional junction box sealing structure includes a body 10, a cover 20 which is seated on the upper side of the body 10 to shield various components installed inside the body 10 from the outside, And a gasket 30 provided on the contact surface between the body 10 and the cover.

The upper surface of the body 10 is formed to protrude along the plate surface direction of the plurality of fastening members 11 for fastening with the cover 20 and is fastened to the peripheral surface of the cover 20, A plurality of fastening members (21) are formed to protrude at positions opposed to each other in a shape corresponding to the member (11).

A mounting groove 22 is formed on the contact surface of the body 10 in contact with the cover 20 so that the gasket 30 can be installed at a predetermined depth along the thickness direction of the body 10.

The gasket 30 is provided on a contact surface for coupling the body 10 and the cover 20 so that moisture or foreign matter can be prevented from penetrating into the internal space of the body 10.

The gasket 30 is formed to have a curved outer surface so as to have a circular cross section and is extended along the circumference of the installation groove 22 formed on the contact surface of the body 10 and accommodated in the installation groove 22.

A part of the upper surface of the gasket 30 accommodated in the installation groove 22 is protruded to the outside of the installation groove 22 at a predetermined height so that when the body 10 and the cover 20 are fastened, So that watertightness is achieved.

In this conventional junction box sealing structure, since the gasket 30 is formed to have a circular cross section and is inserted into the installation groove 22 provided in the body 10, Moisture may be introduced into the gasket 30 from the outside of the gasket 30 and white water generated partially on the contact surface between the body 10 and the cover 20 may be transferred to the inside of the gasket 30 due to the inflow water, have.

Since the gasket 30 is formed of a simple silicone material and is installed between the body 10 and the cover 20, it is impossible to energize the body 10 and the cover 20, have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to improve the watertightness by deforming the shape and material of the gasket provided between the body of the junction box and the cover to prevent water from penetrating into the junction box, And a sealing structure of a junction box capable of enhancing electromagnetic wave shielding performance by enabling energization between the body and the cover.

According to an aspect of the present invention, there is provided a sealing structure for a junction box, comprising: a body having a predetermined internal space and accommodating a plurality of electrical components in the internal space; A cover fastened to an upper surface of the body to shield the inner space from the outside; And a cover disposed between the body and the cover so as to extend along the contact surface between the body and the cover. The upper surface and the lower surface of the body are in contact with the entire contact surface of the body and the entire contact surface of the cover, A gasket for preventing the gasket from being damaged; .

Any one of the contact surfaces of the cover and the body may increase the contact area with the gasket and may be recessed to prevent the gasket from being separated from the contact surface.

The gasket may include a plate-like member having a plate-shaped cross section so as to be in contact with the entire surface of the contact surface of the body and the cover, and a release protrusion protruding from one side of the plate- Lt; / RTI >

In addition, the separation preventing protrusion may be forcedly inserted into the separation preventing groove so that the gasket may be fastened when assembling the junction box.

In addition, an eave member may be provided on the periphery of the cover fastened to the body, the eave member being bent downward from the end of the cover to extend to the circumferential surface of the body.

The gasket may be provided with a pressing member that is pressed upon assembling the body and the cover to increase the compression force with respect to the body and the cover so that the thickness of the gasket is enlarged respectively on the upper surface and the lower surface of the plate- have.

The pressing members may be spaced apart from each other by a predetermined distance, and may be provided on the plate surface of the plate member.

In addition, the length of the eave member extending downward along the thickness direction of the cover may be such that the side of the body and the inner side of the eave member are in contact with each other to prevent the side of the body contacting the gasket from being exposed to the outside. As shown in Fig.

The gasket may be formed of a conductive silicon material so that electrical shielding performance can be maintained by allowing conduction between the body and the cover.

According to the present invention, the shape and material of the gasket provided between the body of the junction box and the cover are modified to improve watertightness, thereby preventing water from penetrating into the junction box, It is possible to enhance the electromagnetic wave shielding performance by enabling energization between the body and the cover at the same time as strengthening.

FIG. 1 is an enlarged view of a portion of a conventional junction box sealing structure,
FIG. 2 is an exploded perspective view of a junction box sealing structure according to an embodiment of the present invention,
3 is a cross-sectional view illustrating a regular box sealing structure according to an embodiment of the present invention.

It should be understood that the specific details of the sealing structure of the junction box of the present invention are set forth in the following description in order to provide a more thorough understanding of the present invention and that the present invention may be readily practiced without these specific details, And will be apparent to those skilled in the art.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings, with reference to the parts necessary for understanding the operation and operation according to the present invention.

FIG. 2 is an exploded perspective view illustrating a junction box sealing structure according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a rectangular box sealing structure according to an embodiment of the present invention.

As shown in these figures, the sealing structure of the junction box according to the present invention includes a body 100 having a predetermined internal space 110 and accommodating a plurality of electrical components in the internal space 110, A cover 200 which is fastened to the upper surface of the body 100 and shields the inner space 110 from the outside and a cover 200 which is connected between the body 100 and the cover 200, The upper surface and the lower surface of the body 100 are provided so as to be in contact with the entire contact surface of the body 100 and the entire contact surface of the cover 200 so that moisture permeates into the internal space 110 of the body 100 And a gasket (300) for preventing the gasket (300).

The junction box includes a body 100 having a predetermined internal space 110 and accommodating a plurality of electrical components in the internal space 110 and a cover 200 coupled to an upper surface of the body 100 .

The upper surface of the body 100 is formed to protrude along the plate surface direction of the plurality of fastening members 101 for fastening with the cover 200 and is fastened to the peripheral surface of the cover 200, A plurality of fastening members 201 are protruded and formed at positions opposed to each other in a shape corresponding to the member 101. [

The contact surface of the body 100 contacting the cover 200 increases the contact area with the gasket 300 and prevents the gasket 300 from being separated from the contact surface. have.

The diameter of the separation preventing groove 120 is formed to be smaller than the diameter of the separation preventing protrusion 320 formed in the gasket 300 so that the separation preventing protrusion 320 is forced into the separation preventing groove 120, The gasket 300 can be installed on the body 100 when the gasket 300 is installed.

The body 100 and the cover 200 are assembled in such a manner that the fastening member 101 formed on the body 100 by the plurality of bolts and the fastening member 201 formed on the cover 200 are overlapped with each other, 101, and 201, the coupling between the body 100 and the cover 200 is performed.

The cover 200 is folded down from the end of the cover 200 to extend to the circumferential surface of the body 100.

By preventing the side surface of the gasket 300 from being exposed to the outside due to the configuration of the eave member 210, water can be prevented from flowing through the side surfaces of the body 100 and the cover 200 which are in contact with the gasket 300, The mold can be further improved.

For this purpose, the eave member 210 is formed so that the side of the body 100, which is bent downward at the end of the cover 200, is in contact with the gasket 300, It is preferable that the inner surface of the protruding portion 210 is extended to a length that can be contacted.

A separate gasket 300 is provided on the contact surface for coupling the body 100 and the cover 200 to prevent moisture or foreign matter from infiltrating into the internal space 110 of the body 100.

A gasket is provided at a plurality of locations along the circumferential direction of the gasket 300 with the fastening members 101 and 201 formed on the body 100 and the cover 200 when the gasket is fastened between the body 100 and the cover 200, And a fastening member 301 for allowing rear fastening is provided.

The gasket 300 includes a plate member 310 having a plate-shaped cross section so as to be in contact with the entire contact surface area of the body 100 and the cover 200, And a separation preventing protrusion 320 inserted into the groove 120.

The plate member 310 is installed on the mutual contact surfaces of the body 100 and the cover 200. The upper surface and the lower surface of the plate member 310 are respectively in contact with the contact surfaces of the cover 200 and the body 100 As shown in FIG.

The body 100 and the cover 200 are pressed at the time of assembling the gasket 300 so that the thickness of the gasket 300 is expanded on the upper surface and the lower surface of the plate member 310, It is more effective that the pressing member 311 is provided.

The pressing members 311 are spaced apart from each other by a predetermined distance so as to be provided on the plate surface of the plate member 310 so that the plate surface of the gasket 300 is doubly pressed against the body 100 and the cover 200, It can be blocked at its source.

The diameter of the separation preventing protrusion 320 is formed to be slightly larger than the diameter of the separation preventing groove 120 so that the separation preventing protrusion 320 is separated from the separation preventing protrusion 320. [ The cover 200 and the gasket 300 may be easily assembled when assembling the body 100, the cover 200, and the gasket 300 by forcibly inserting the cover 100 into the preventing groove 120.

It is effective that the gasket 300 is formed of a conductive silicon material so as to allow electric conduction between the body 100 and the cover 200 so that the electric shielding performance can be maintained.

In general, for electromagnetic shielding, a volume resistivity of 10 Ω · cm or less is used. Volumetric resistance is a reciprocal concept of conductivity, which means that the smaller the value, the higher the electrical conductivity.

As can be seen from the following Table 1, the material of the gasket 300 used in the junction box sealing structure according to the present invention is SH654OU or SH658OU, so that the volume resistance of the conventional gasket is maintained to be 1000 or more The shielding performance can be improved by remarkably improving the conductivity.

[Table 1]

Figure pat00001

This is because the degree of electromagnetic waves leaking to the outside from the high-voltage junction box to which the junction box sealing structure of the present invention is applied is higher than that of the shielding performance of the gasket 300 by forming the material of the gasket 300 into SH654OU, It can be confirmed that it is lower than the regulation value.

[Graph 1]

Figure pat00002

As described above, the junction box sealing structure according to an embodiment of the present invention improves the watertightness by deforming the shape and material of the gasket provided between the body and the cover of the junction box, thereby allowing moisture to penetrate into the junction box. Thereby enhancing the electrical stability and enabling the conduction between the body and the cover, thereby improving the electromagnetic wave shielding performance.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

100: Body 101: Fastening member
110: inner space 120:
200: cover 201: fastening member
210: eave member 300: gasket
301: fastening member 310: plate member
311: pressing member 320:

Claims (9)

A body 100 having a predetermined internal space 110 and accommodating a plurality of electrical components in the internal space 110;
A cover 200 fastened to the upper surface of the body 100 to shield the inner space 110 from the outside;
The cover 100 is installed between the body 100 and the cover 200 so as to extend along the contact surface between the body 100 and the cover 200. The upper surface and the lower surface of the cover 100 cover the entire contact surface of the body 100, A gasket 300 installed in contact with the entire contact surface of the body 100 to prevent moisture from penetrating into the internal space 110 of the body 100;
And the sealing structure of the junction box. The method according to claim 1,
One of the contact surfaces of the cover 200 and the body 100 is provided with an escape preventing groove 120 for preventing contact between the gasket 300 and the gasket 300, ) Is recessed. 3. The method of claim 2,
The gasket 300 includes a plate member 310 having a plate-shaped cross section so as to be in contact with the entire contact surface area of the body 100 and the cover 200, And a detachment protrusion (320) formed to be inserted into the detachment prevention groove (120). The method of claim 3,
The escape projection (320) is forcibly inserted into the escape groove (120) so that the gasket (300) is fastened when assembling the junction box. The method of claim 3,
The body 100 and the cover 200 may be pressed while assembling the body 100 and the cover 200 so that the thickness of the gasket 300 is extended on the upper surface and the lower surface of the plate member 310 of the gasket 300, And a pressing member (311) capable of increasing the pressing force with the cover (200). 6. The method of claim 5,
Wherein the pressing members (311) are spaced apart from each other by a predetermined distance and are provided on the plate surface of the plate member (310). The method according to claim 1,
An eave member 210 is formed on the periphery of the cover 200 that is fastened to the body 100 and is bent downward from an end of the cover 200 to extend to the circumferential surface of the body 100 Features a sealing box sealing structure. 8. The method of claim 7,
The length of the eave member 210 extending downward along the thickness direction of the cover 200 is determined by the length of the body 100 to prevent the side surface of the body 100 contacting the gasket 300 from being exposed to the outside, And the inner surface of the eave member (210) is in contact with the inner surface of the eave member (210). 9. The method according to any one of claims 1 to 8,
Wherein the gasket (300) is formed of a conductive silicon material so as to enable electrical conduction between the body (100) and the cover (200) so that the electrical shielding performance can be maintained.
KR1020150163998A 2015-11-23 2015-11-23 Sealing structure for junction box KR101804461B1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190081787A (en) * 2017-12-29 2019-07-09 주식회사 유라코퍼레이션 High voltage junction block
CN110011462A (en) * 2019-05-06 2019-07-12 安徽皖南新维电机有限公司 A kind of sealing structure of electric machine stand and terminal box
KR20190117424A (en) * 2019-09-27 2019-10-16 주식회사 유라코퍼레이션 High voltage junction block
KR102035289B1 (en) * 2018-11-13 2019-11-08 인지에이엠티 주식회사 Air-tightness case for car
CN111083889A (en) * 2019-11-27 2020-04-28 西安呱牛信息技术有限公司 Coat device applied to portable data processing equipment
CN111637227A (en) * 2020-07-01 2020-09-08 杭州铁城信息科技有限公司 Electric shell sealing structure for vehicle
KR20210085992A (en) * 2019-12-31 2021-07-08 주식회사 유라코퍼레이션 Junction Block
KR20210085991A (en) * 2019-12-31 2021-07-08 주식회사 유라코퍼레이션 Junction Block

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190081787A (en) * 2017-12-29 2019-07-09 주식회사 유라코퍼레이션 High voltage junction block
KR102035289B1 (en) * 2018-11-13 2019-11-08 인지에이엠티 주식회사 Air-tightness case for car
CN110011462A (en) * 2019-05-06 2019-07-12 安徽皖南新维电机有限公司 A kind of sealing structure of electric machine stand and terminal box
CN110011462B (en) * 2019-05-06 2024-05-03 安徽皖南新维电机有限公司 Sealing structure of motor base and junction box
KR20190117424A (en) * 2019-09-27 2019-10-16 주식회사 유라코퍼레이션 High voltage junction block
CN111083889A (en) * 2019-11-27 2020-04-28 西安呱牛信息技术有限公司 Coat device applied to portable data processing equipment
KR20210085992A (en) * 2019-12-31 2021-07-08 주식회사 유라코퍼레이션 Junction Block
KR20210085991A (en) * 2019-12-31 2021-07-08 주식회사 유라코퍼레이션 Junction Block
KR20210128999A (en) * 2019-12-31 2021-10-27 주식회사 유라코퍼레이션 Junction Block
CN111637227A (en) * 2020-07-01 2020-09-08 杭州铁城信息科技有限公司 Electric shell sealing structure for vehicle

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