KR20140136152A - Electric junction box - Google Patents

Electric junction box Download PDF

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Publication number
KR20140136152A
KR20140136152A KR1020130056278A KR20130056278A KR20140136152A KR 20140136152 A KR20140136152 A KR 20140136152A KR 1020130056278 A KR1020130056278 A KR 1020130056278A KR 20130056278 A KR20130056278 A KR 20130056278A KR 20140136152 A KR20140136152 A KR 20140136152A
Authority
KR
South Korea
Prior art keywords
case
housing
connector
bus bar
junction box
Prior art date
Application number
KR1020130056278A
Other languages
Korean (ko)
Inventor
최명선
권범주
유창현
Original Assignee
현대자동차주식회사
기아자동차주식회사
한국단자공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사, 기아자동차주식회사, 한국단자공업 주식회사 filed Critical 현대자동차주식회사
Priority to KR1020130056278A priority Critical patent/KR20140136152A/en
Publication of KR20140136152A publication Critical patent/KR20140136152A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/14—Fastening of cover or lid to box

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Or Junction Boxes (AREA)

Abstract

The present invention relates to an electrical junction box. The electrical junction box of the present invention comprises a first case (10) and a second case (40) which are combined to each other to form a certain space inside thereof. Bus bars (28, 34) are installed between the first case (10) and the second case (40). A connector unit (16) opened to a lateral side is formed integrated with the first case (10) where the bus bars (28, 34) are situated. The connector unit (16) includes a housing (18) forming the outer appearance, and, connector terminals (32, 28) bent from the bus bars (28, 34) is positioned inside an insertion hole (18′) opened to the front end of the housing (18). A terminal slit (22) through which the connector terminals (32, 38) pass is formed on the top surface of the housing (18). According to the present invention, the connector terminals (32, 38) can be installed at the correct positions while the connector unit (16) is formed by a simple organization. Thus, coupling with a counter connector can be done with accuracy and firmness.

Description

Junction box {ELECTRIC JUNCTION BOX}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a junction box, and more particularly, to a junction box capable of controlling power transmitted from a power source to a load.

In an electric field system having a large number of electric parts such as an automobile, various types of junction boxes are used for the purpose of improving the efficiency of electric wiring and maintenance, and examples of the junction box include a relay box and a battery box.

In the junction box, for example, a lower case and an upper case are configured to form a skeleton, a bus bar is placed on the lower case, and the bus bar is configured to transmit power between a power source side and a load side via a relay- .

At this time, there is a case where the connector portion is integrally formed to be connected to an external connector for electrical connection with the outside of the junction box.

That is, the housing constituting the connector portion is formed by separating the lower case and the upper case from each other.

However, since the connector portion of the junction box formed by dividing the lower case and the upper case as described above may not be firmly coupled to the external mating connector due to the precision of the housing, There is a disadvantage in that when the high voltage is used, a spark occurs when the mating connector is detached, resulting in a fire.

In order to solve the above-mentioned disadvantages, it has been proposed that the housing of the connector portion is integrally formed in the upper case as in the prior art documents described below.

In this case, since the housing of the connector portion is formed integrally with the upper case, the rigidity of the connection with the mating connector can be maintained, but the configuration of the terminal extending from the bus bar installed in the lower case is complicated.

That is, since the bus bar must be bent a plurality of times in order to form the terminal, rigidity of the bus bar is not maintained and it is difficult to install the bus bar in a proper position. In order to support the terminal bent many times, And the need to form a support in the case.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

Japanese Unexamined Patent Application Publication No. 2012-085506

SUMMARY OF THE INVENTION It is an object of the present invention to provide a junction box in which a housing of a connector unit provided in a junction box is integrally formed to firmly engage with an external mating connector.

It is another object of the present invention to improve the positional accuracy of a terminal provided in a housing of a connector portion provided in a junction box.

It is another object of the present invention to simplify the configuration of the connector portion provided in the junction box.

According to an aspect of the present invention, there is provided a junction box in which a first case and a second case are coupled with each other to form a predetermined space therein, and a bus bar integrally formed with the terminal is formed in the space, A housing having therein an insertion space formed integrally with one side edge of a first case on which a bus bar is seated and extending in a direction orthogonal to a direction in which the first case and the second case are coupled, And a connector terminal inserted into the insertion space of the housing through a terminal slit formed in the housing and bent at one side of the bus bar.

Wherein the bus bar includes a body portion having both side surfaces facing the first case and the second case, respectively; And a connector terminal bent in the body portion and projecting toward the second case.

The connector terminal having a widthwise one end and a rear end connected to the body portion; And is bent at a portion connected to the body portion.

And an upper surface of the housing is configured to be shielded by a shield plate formed in the second case.

An insulating plate is provided between the first case and the second case and is seated on the first case; And bus bars are seated between the insulating plate and the first case and between the insulating plate and the second case, respectively.

In the junction box according to the present invention, the following effects can be obtained.

First, the junction box according to the present invention is integrally formed with the first case in a connector portion to be coupled with an external mating connector. Therefore, the housing forming the skeleton of the connector portion can be integrally formed, so that the joint strength with the mating connector is improved.

In the present invention, the connector portion is integrally formed on the side of the first case on which the bus bar is seated, and the remaining portion except for the inlet for insertion of the mating connector can be substantially shielded from the outside, It is possible to prevent the liquid from flowing into the inside.

In the present invention, the housing of the connector portion is formed on the side of the first case where the bus bar is placed, and the terminal located inside the housing can be formed by bending the bus bar only once, The coupling with the mating connector becomes more reliable and the installation accuracy of the terminal can be increased without any additional parts.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an outer configuration of a preferred embodiment of a junction box according to the present invention;
2 is a perspective view showing a connector portion in a state in which the second case is removed in the embodiment of the present invention,
3 is a bottom perspective view showing the configuration of a connector portion formed in the first case in the embodiment of the present invention,
4 is a perspective view showing a configuration of a first bus bar constituting an embodiment of the present invention,
5 is a perspective view showing a configuration of a second bus bar constituting an embodiment of the present invention.

Hereinafter, preferred embodiments of the junction box according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in the drawings, the junction box of the present invention forms the appearance and the skeleton of the first case 10 and the second case 40 described below.

A predetermined space is formed inside the first case 10 and the second case 40. An insulating plate 24 and bus bars 28 and 34 and the like will be described below.

The first case 10 is substantially rectangular in plan view and has a peripheral side wall 12 formed thereon. The side wall 12 defines a predetermined Space is created.

A first bus bar 28, an insulating plate 24 and a second bus bar 34 are stacked in this order on the outer surface of the side wall 12, A plurality of engagement protrusions 12 'are formed.

A plurality of mounting brackets 14 are also formed on the outer surface of the side wall 12 of the first case 10. The mounting bracket 14 is integrally formed with the first case 10 and is formed on the side wall 12, four of which are opposed to each other in the present embodiment. The mounting bracket 14 is configured to mount the junction box to, for example, a vehicle body of a vehicle.

A connector portion 16 is formed on one side of the edge of the first case 10. The connector portion 16 electrically connects the junction box to the outside. A mating connector (not shown) is coupled to the connector portion 16 to perform electrical connection with the outside.

The connector portion 16 is formed so as to be perpendicular to the direction in which the side wall 12 of the first case 10 is viewed, that is, the direction in which the first case 10 and the second case 40, Direction.

The configuration of the connector portion 16 will be described in more detail. A housing 18 forms an outer surface of the connector portion 16. The housing 18 is in the form of a hexahedron with one side opened in this embodiment. However, the shape of the housing 18 may be various shapes such as a cylindrical shape or a tapered cylindrical shape.

An insertion space 18 'is formed in the housing 18. The insertion space 18 'is a space into which the mating connector is inserted. The insertion space 18 'is opened to the front end of the housing 18. On the inner surface of the insertion space 18 ', a fastening protrusion 20 for fastening with the mating connector is formed.

Reference numeral 20 'is a core slit in which a core for forming the clamping jaw 20 is located in the injection mold. The core slit 20 'may not be used depending on the structure of the injection mold.

A guide rib 21 is also formed on the inner surface of the insertion space 18 '. The guide ribs 21 guide the insertion of the mating connector and also guide the insertion direction of the mating connector. In addition to the above-described configuration, the housing 18 may have various configurations for coupling with the mating connector.

A terminal slit 22 is formed on the upper surface of the housing 18, that is, on the surface facing the second case 40 described below in the first case 10. The terminal slit 22 is formed to the rear end of the housing 18, that is, to the inside of the first case 10. Actually, the terminal slit 22 is also formed on the upper surface and the back surface of the housing. This prevents interference with the terminals 32 and 38 formed in these bus bars 28 and 34 when the first and second bus bars 28 and 34 to be described below are seated on the first case 10 In order to avoid such problems.

Meanwhile, an insulating plate 24 may be disposed inside the first case 10. The insulating plate 24 is not necessarily required. The bus bars 28 and 34 to be described below may be disposed in the first case 10 without using the insulating plate 24. [ However, if the insulating plate 24 is used, the bus bars 28 and 34 can be disposed in two layers, thereby reducing the size of the junction box as a whole. The insulating plate 24 is formed in a plate shape having a smaller area than the upper surface of the first case 10.

Insulating walls (26, 26 ') for securing an insulation distance between adjacent bus bars are formed in the insulating plate (24) variously. The insulating walls 26 and 26 'are formed with various shapes to maximize the insulation distance, thereby miniaturizing the junction box.

A first bus bar 28 is provided in the first case 10 between the first case 10 and the insulating plate 24 as shown in FIG. Of course, not only the first bus bar 28 having a shape as shown in FIG. 4 is provided between the first case 10 and the insulating plate 24, but bus bars having various shapes can be installed have. The configuration of the first bus bar 28 will be described as an example.

The first bus bar 28 is formed by cutting a metal plate into a predetermined shape and bending necessary parts, and the body portion 30 is provided. The body portion 30 is formed in a plate shape and is positioned between the first case 10 and the insulating plate 24. Accordingly, the body portion 30 is in the form of a flat plate.

Terminals 32 and 32 'are provided on one side of the body 30. The terminals 32 and 32 'are also various. One of them is the connector terminal 32 positioned in the insertion space 18' of one of the connector portions 16. The other is component terminal 32 'which is electrically connected to component 52, which will be described below.

The terminals 32 and 32 'are all once bent orthogonally with respect to the body 30. The connector terminal 32 includes a second case 40 which is formed to be perpendicular to a body 30 having both side surfaces facing the first case 10 and the second case 40, As shown in Fig. Thus, the width of the terminal slit 22 of the housing 18 can be minimized by forming the connector terminal 32.

The connector terminal 32 is also connected to the body 30 only at a part of its rear end and is not connected to the body 30 at the other end. A rear end portion of the connector terminal 32 in the width direction is connected to the body portion 30 and is bent at the connected portion.

A second bus bar 34 seated on the insulating plate 24 is shown in FIG. The second bus bar 34 refers to all the bus bars between the insulating plate 24 and the second case 40 to be described below and the first bus bar 28 is connected to the first case 10, And all the bus bars located between the insulating plate 24 and the bus bar.

The second bus bar 34 is also formed by bending a plurality of terminals 38 and 38 'perpendicularly to the plate-shaped body 36. One of the terminals 38 is a connector terminal 38 located in the connector portion 16 on the right side of Fig. The connector terminal 38 is also bent once against the body 36 so as to protrude toward the second case 40.

A portion of the connector terminal 38 is connected to the body portion 36 and the distal end portion of the connector terminal 38 is formed separately from the body portion 36. Like the connector terminal 32 described above, the connector terminal 38 is connected to the body 36 at one end in the width direction of the connector terminal 38, and is bent at the connected portion.

The second case 40 is provided to be coupled with the first case 10 to configure the appearance of the junction box. The second case 40 also has a substantially quadrangular shape in plan view, and a side wall 42 is formed to surround the edge. The side wall 42 extends toward the first case 10 and the side wall 42 is positioned so that its inner surface is in close contact with the outer surface of the side wall 12 of the first case 10.

A hook piece 44 is formed on the outer surface of the side wall 42 of the second case 40 so as to hook the hook 12 'formed on the side wall 12 of the first case 10. A hooking hole 46 is formed in the hooking piece 44 so that the hooking jaw 12 'is seated.

The second case 40 is also formed with a shield plate 48 protruding therefrom. The shielding plate 48 shields the core slit 20 'and the terminal slit 22 formed in the housing 18 of the connector 16. The shield plate 48 may not be used when the junction box is used in an environment free from foreign matter or moisture.

The shield plate 48 may be provided with protrusions (not shown) that are seated on the core slit 20 'or the terminal slit 22. When such protrusions are provided, the coupling between the first case 10 and the second case 40 becomes more rigid and the relative positions therebetween can be more easily set. In the present embodiment, the shield plate 48 is formed so as to surround three surfaces of the housing 18 at the same time. However, only the upper surface of the housing 18 may be shielded.

A plurality of component mounting portions 50 are formed on the upper surface of the second case 40. A part of the component mounting portion 50 is formed through the second case 40 and a protruding wall is formed around the outer surface of the component mounting portion 50 for a partition with another portion. A component such as a relay is mounted on the component mounting portion 50 and is electrically connected to the component terminals 32 'and 38' of the bus bars 28 and 34.

Hereinafter, the use of the junction box according to the present invention will be described in detail.

First, the junction box of the present invention is assembled. The first bus bar 28 is first seated in the space surrounded by the inside of the first case 10, that is, the side wall 12 of the first case 10. The connector terminal 32 seats the body portion 30 of the first bus bar 28 on the first case 10 and the connector terminal 32 is connected to the terminal slit of the housing 18 on the left side 22 to be positioned inside the insertion space 18 '.

After the first bus bars 28 are all mounted on the first case 10, the insulating plate 24 is positioned. So that the insulating wall 26 surrounds the rear portion of the connector terminal 32 of the first bus bar 28 when the insulating plate 24 is positioned in the first case 10. The insulating plate 24 may have a structure for coupling on the first case 10 or may be fixed by coupling the second case 40 to the first case 10.

Next, the second bus bar 34 is placed on the insulating plate 24. When the connector terminal 38 of the second bus bar 34 is located on the insulating plate 24, the connector terminal 38 is formed in the housing 18 on the right side of FIG. Through the terminal slit 22 to be located inside the insertion space 18 '.

After the second bus bars 34 are all positioned on the insulating plate 24, the second case 40 is engaged with the first case 10. The hooking protrusion 12 'formed on the side wall 12 of the first case 10 is hooked on the hooking hole 46 formed in the hooking piece 44 of the second case 40.

When the second case 40 is coupled to the first case 10, the shielding plate 48 covers the top and both sides of the housing 18. Such a state is well illustrated in FIG. Therefore, when the mating connector is mounted, the foreign object can not enter the inside of the housing 18 from the outside because there is no part communicating with the outside except the open end of the housing 18.

The assembled junction box is fixedly mounted on a vehicle body, for example, with the component 52 mounted on the component mounting portion 50 of the second case 40. A mating connector is coupled to the connector portion 16 to electrically connect to the electrical component, and a predetermined terminal is connected to an unrepresented electrode portion on the opposite side of the connector portion 16 to supply power .

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

10 - first case 12 - side wall
12 '- Jaw 14 - Mounting bracket
16 - connector portion 18 - housing
20 - fastening jaw 20 '- core slit
21 - Guide rib 22 - Terminal slit
24 - insulating plate 26, 26 '- insulating wall
28 - first bus bar 30 - body part
32,32 '- Terminal 34 - Second bus bar
36 - body portion 38, 38 '- terminal
40 - Second case 42 - Side wall
44 - Hook 46 - Hook
48 - Shield plate 50 - Component mounting part
52 - Parts

Claims (5)

A junction box comprising a first case and a second case coupled to each other to form a predetermined space therein and a bus bar integrally formed with the terminal in the space,
A housing having an insertion space integrally formed at one side edge of a first case on which the bus bar is seated and extending in a direction orthogonal to a direction in which the first case and the second case are coupled, And
And a connector terminal inserted into the insertion space of the housing through a terminal slit formed in the housing and bent at one side of the bus bar. The method according to claim 1,
Wherein the bus bar includes a body portion having both side surfaces facing the first case and the second case, respectively; And
And a connector terminal that is bent at the body portion and protrudes toward the second case. The method of claim 2,
The connector terminal having a widthwise one end and a rear end connected to the body portion;
And a bending portion connected to the body portion. The method according to claim 1,
And the upper surface of the housing is configured to be shielded by a shield plate formed in the second case. 5. The method according to any one of claims 1 to 4,
An insulating plate is provided between the first case and the second case and is seated on the first case;
And bus bars are seated between the insulating plate and the first case and between the insulating plate and the second case, respectively.
KR1020130056278A 2013-05-20 2013-05-20 Electric junction box KR20140136152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130056278A KR20140136152A (en) 2013-05-20 2013-05-20 Electric junction box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130056278A KR20140136152A (en) 2013-05-20 2013-05-20 Electric junction box

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KR20140136152A true KR20140136152A (en) 2014-11-28

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KR1020130056278A KR20140136152A (en) 2013-05-20 2013-05-20 Electric junction box

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160036424A (en) * 2014-09-25 2016-04-04 현대자동차주식회사 Female connector of high voltage junction box and assembly methods thereof
US10160335B2 (en) 2015-10-07 2018-12-25 Hyundai Motor Company Power distributing apparatus of vehicle
KR101964821B1 (en) * 2017-12-26 2019-04-02 주식회사 유라코퍼레이션 Connector module
KR101964820B1 (en) * 2017-12-26 2019-04-02 주식회사 유라코퍼레이션 Connector module
KR101964822B1 (en) * 2017-12-28 2019-04-02 주식회사 유라코퍼레이션 Connector module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160036424A (en) * 2014-09-25 2016-04-04 현대자동차주식회사 Female connector of high voltage junction box and assembly methods thereof
US10160335B2 (en) 2015-10-07 2018-12-25 Hyundai Motor Company Power distributing apparatus of vehicle
KR101964821B1 (en) * 2017-12-26 2019-04-02 주식회사 유라코퍼레이션 Connector module
KR101964820B1 (en) * 2017-12-26 2019-04-02 주식회사 유라코퍼레이션 Connector module
KR101964822B1 (en) * 2017-12-28 2019-04-02 주식회사 유라코퍼레이션 Connector module

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