KR100708088B1 - Ground apparatus for shielding EMI of electronics appliance - Google Patents

Ground apparatus for shielding EMI of electronics appliance Download PDF

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KR100708088B1
KR100708088B1 KR1020000031448A KR20000031448A KR100708088B1 KR 100708088 B1 KR100708088 B1 KR 100708088B1 KR 1020000031448 A KR1020000031448 A KR 1020000031448A KR 20000031448 A KR20000031448 A KR 20000031448A KR 100708088 B1 KR100708088 B1 KR 100708088B1
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South Korea
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connector
metal terminal
circuit board
rear panel
ground plate
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KR1020000031448A
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Korean (ko)
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KR20010112544A (en
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이형희
이상인
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삼성전자주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]

Abstract

본 발명은 전자제품의 전자파 차폐용 접지장치에 관한 것으로서, 전자제품의 본체 내부에 설치되는 회로기판과; 상기 회로기판으로부터 본체 외부기기와 전기적인 신호를 연결하기 위한 동축심과 금속단자로 이루어진 커넥터와; 상기 커넥터가 삽입되도록 관통공이 형성된 후면패널; 및 상기 커넥터와 결합된 상태에서 금속단자와 전기적으로 접촉되도록 형성된 돌기와, 상기 후면패널와 전기적으로 접촉되도록 벤딩가공에 의해 형성된 돌출편을 구비하는 접지판; 을 구비하는 것을 특징으로 한다. 본 발명에 의하면, 디지탈 비디오 디스크 플레이어(DVDP)등과 같이 외부기기로 영상 및 음성신호를 출력하기 위한 커넥터와 전자제품의 본체를 전기적으로 접촉하도록 설치된 접지판을 구비함으로써, 커넥터를 통하여 방사되는 전자파를 효율적으로 제거하게 되어 외부기기로 출력되는 영상 및 음성신호에 포함되는 노이즈가 억제된다.The present invention relates to a grounding device for shielding electromagnetic waves of electronic products, comprising: a circuit board installed inside a main body of the electronic product; A connector made of a coaxial core and a metal terminal for connecting an electrical signal to the external device from the circuit board; A rear panel having a through hole formed to insert the connector; And a ground plate having a protrusion formed to be in electrical contact with the metal terminal in a state of being coupled with the connector, and a protruding piece formed by bending to be in electrical contact with the rear panel. It characterized by having a. According to the present invention, there is provided a connector for outputting video and audio signals to an external device such as a digital video disc player (DVDP) and a ground plate provided to electrically contact the main body of the electronic product. Efficiently, the noise included in the video and audio signals output to the external device is suppressed.

Description

전자제품의 전자파 차폐용 접지장치{Ground apparatus for shielding EMI of electronics appliance}Ground apparatus for shielding EMI of electronics appliances

도 1은 일반적인 디지털 비디오 디스크 플레이어(Digital Video Disc Player : DVDP)의 개략적인 분리사시도,1 is a schematic exploded perspective view of a typical digital video disc player (DVDP);

도 2a 및 도 2b는 종래기술에 의한 전자제품의 전자파 차폐용 접지구조를 개략적으로 나내내 보인 단면도,2A and 2B are cross-sectional views schematically showing a grounding structure for shielding electromagnetic waves of electronic products according to the prior art;

도 3은 본 발명의 실시예에 의한 전자제품의 전자파 차폐용 접지장치를 나타내 보인 개략적인 분리사시도,3 is a schematic separated perspective view showing a grounding device for shielding electromagnetic waves of an electronic product according to an embodiment of the present invention;

도 4는 도 3에 도시된 접지장치의 요부 단면도.4 is a cross-sectional view of main parts of the grounding apparatus shown in FIG. 3;

* 도면의 주요부분에 사용된 부호의 설명* Explanation of symbols used in the main part of the drawing

30...본체 31...후면패널30.Main unit 31.Rear panel

40...메인회로기판 50...커넥터40 ... Main circuit board 50 ... Connector

51...동축심 52...금속단자51 Coaxial core 52 Metal terminal

53...보스부 60...접지판53 Boss section 60 Ground plate

62...돌기 64...돌출편62.Projection 64.Extrusion

본 발명은 전자제품의 전자파 차폐용 접지장치에 관한 것으로, 더욱 상세하게는 영상 및 오디오기기 등과 같은 전자제품에서 발생되는 정전기 및 전자파(EMI)를 차폐시키기 위한 전자제품의 전자파 차폐용 접지장치에 관한 것이다.The present invention relates to a grounding device for shielding electromagnetic waves of electronic products, and more particularly, to a grounding device for shielding electromagnetic waves of electronic products for shielding electrostatic and electromagnetic waves (EMI) generated from electronic products such as video and audio equipment. will be.

일반적으로 도 1에 도시된 바와 같이, 디지탈 비디오 디스크 플레이어(Digital Video Disc Player : DVDP)와 같은 전자제품은 본체(10)와, 본체(10)의 전면에 설치되는 전면패널(12)과 후면에 형성된 후면패널(101)과, 광디스크를 수용하는 트레이(Tray)(13)와, 상기 트레이(13)에 안착되는 광디스크를 회전시켜 광디스크에 정보를 기록 또는 재생하기 위한 데크(Deck)(14)와, 전기적인 기능을 수행하는 회로부품들이 장착된 메인회로기판(15)과, 상기 메인회로기판(15)에 설치되어 외부기기(미도시)와 전기적인 신호를 연결하기 위해 동축심(21)와 금속단자(22)을 포함하는 커넥터(20)와, 상기 본체(10)의 상부에 설치되는 상부덮개(17)를 구비하고 있다.In general, as shown in FIG. 1, an electronic product such as a digital video disc player (DVDP) includes a main body 10 and a front panel 12 and a rear surface installed at the front of the main body 10. A formed rear panel 101, a tray 13 for accommodating the optical disc, a deck 14 for recording or playing information on the optical disc by rotating the optical disc seated on the tray 13; The main circuit board 15 is equipped with circuit components that perform an electrical function, and the coaxial core 21 is installed on the main circuit board 15 to connect an electrical signal with an external device (not shown). A connector 20 including a metal terminal 22 and an upper cover 17 provided on the upper portion of the main body 10 are provided.

상기 디지탈 비디오 디스크 플레이어와 같은 전자제품에는 영상 및 음성신호를 디지탈로 처리함에 따라 메인회로기판(15)상에 아나로그(analog)신호와 디지탈(digital)신호를 처리하는 회로부품들(미도시)이 인접하여 설치되며, 데이타 처리용량이 많아짐에 따라 회로부품들이 높은 주파수로 동작되어 노이즈가 많이 발생되게 된다. 이와 같이, 전자제품의 회로처리 과정에서 발생되는 노이즈에 의해, 외부기기로 영상 및 음성신호(S)가 출력되는 커넥터(20)에는 전자파(EMI)가 방출하게 되어 텔레비젼(미도시)과 같은 외부기기에서 디스플레이되는 영상 및 음성신호 가 열화되게 된다..In electronic products such as the digital video disc player, circuit components for processing analog signals and digital signals on the main circuit board 15 as the video and audio signals are processed digitally. These are installed adjacent to each other, and as the data processing capacity increases, the circuit components operate at a high frequency, causing a lot of noise. As such, electromagnetic waves are emitted to the connector 20 through which video and audio signals S are output to an external device due to noise generated in a circuit processing process of an electronic product, such as a television (not shown). Video and audio signals displayed on the device will be degraded.

상기와 같이 전자제품의 영상 및 음성 출력용 커넥터(20)에서 방출되는 전자파를 감소시키기 위해 종래에는 도 2a에 도시된 바와 같이, 커넥터(20)와 메인회로기판(15) 사이에 전자파필터(25)를 설치하여 상기 메인회로기판(15)으로부터 커넥터(20)으로 전달되는 전자파를 제거하였다. 한편, 도 2b에 도시된 바와 같이 커넥터(20)에 접촉되어 지지하기 위한 지지부재(26)를 설치하고, 그 지지부재(26)의 일단에 별도의 돌기(261)를 형성하며, 그 돌기(261)가 전자제품의 후면패널(101)과 접촉되도록 나사(27)로 고정함으로써, 커넥터(20)를 후면패널(101)에 전기적으로 접지시켜 메인회로기판(15)에서 커넥터(20)으로 전달되는 전자파가 후면패널(101)을 통하여 제거되도록 하였다.In order to reduce electromagnetic waves emitted from the connector 20 for outputting video and audio of the electronic product as described above, as shown in FIG. 2A, an electromagnetic wave filter 25 is disposed between the connector 20 and the main circuit board 15. Installed to remove electromagnetic waves transmitted from the main circuit board 15 to the connector 20. On the other hand, as shown in Figure 2b is provided with a support member 26 for contacting and supporting the connector 20, to form a separate projection 261 at one end of the support member 26, the projection ( By fixing the screws 27 so that the 261 is in contact with the rear panel 101 of the electronic product, the connector 20 is electrically grounded to the rear panel 101 and transferred from the main circuit board 15 to the connector 20. The electromagnetic waves are removed through the rear panel 101.

그런데, 상술한 바와 같은 종래의 전자파 제거장치에 있어서, 도 2a에 도시된 바와 같이 각각의 커넥터(20)마다 전자파필터(25)를 사용함으로써 부품수가 증가하게 되며, 도 2b의 경우에도 커넥터(20)를 지지하는 지지부재(26)를가 각각 필요하며 후면패널(101)에 나사(27)로 결합해야만 한다. 따라서, 부품수 및 조립공수가 증가하게 되어 제조원가가 상승되는 단점이 있다.By the way, in the conventional electromagnetic wave removing device as described above, as shown in Figure 2a, the number of parts is increased by using the electromagnetic filter 25 for each connector 20, even in the case of Figure 2b Each supporting member 26 is required and must be coupled to the rear panel 101 with screws 27. Therefore, there is a disadvantage in that the number of parts and the number of assembly operations are increased and the manufacturing cost is increased.

따라서, 본 발명의 목적은 디지탈 비디오 디스크 플레이어(DVDP)등과 같은 전자제품에서 설치된 영상 및 음성신호용 커넥터의 금속단자와 전자제품의 본체에 전기적으로 접촉되는 접지판을 설치하여, 커넥터를 통하여 방사되는 전자파(EMI)의 발생을 억제할 수 있도록 한 전자제품의 전자파 차폐용 접지장치를 제공하는것이 다.Accordingly, an object of the present invention is to install a metal terminal of a connector for video and audio signals installed in an electronic product such as a digital video disc player (DVDP), and a ground plate in electrical contact with the main body of the electronic product. It is to provide a grounding device for shielding electromagnetic waves of electronic products that can suppress the occurrence of EMI.

상기와 같은 목적을 달성하기 위하여 본 발명의 전자제품의 전자파 차폐용 접지장치는 전자제품의 본체 내부에 설치되는 회로기판과; 상기 회로기판으로부터 본체 외부기기와 전기적인 신호를 연결하기 위한 동축심과 금속단자로 이루어진 커넥터와; 상기 커넥터가 삽입되도록 관통공이 형성된 후면패널; 및 상기 커넥터와 결합된 상태에서 금속단자와 전기적으로 접촉되도록 형성된 돌기와, 상기 후면패널와 전기적으로 접촉되도록 벤딩가공에 의해 형성된 돌출편을 구비하는 접지판; 을 구비하는 것을 특징으로 한다. In order to achieve the above object, a grounding device for shielding electromagnetic waves of an electronic product of the present invention includes a circuit board installed inside a main body of the electronic product; A connector made of a coaxial core and a metal terminal for connecting an electrical signal to the external device from the circuit board; A rear panel having a through hole formed to insert the connector; And a ground plate having a protrusion formed to be in electrical contact with the metal terminal in a state of being coupled with the connector, and a protruding piece formed by bending to be in electrical contact with the rear panel. It characterized by having a.

이하 첨부된 도면들을 참조하면서 본 발명의 바람직한 실시예를 상세히 설명한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 전자제품의 전자파 차폐용 접지장치를 나타내 보인 개략적인 분리사시도이며, 도 4는 도 3에 도시된 전자파 차폐용 접지장치의 요부를 나타내 보인 단면도이다.3 is a schematic exploded perspective view showing the electromagnetic shielding grounding device of the electronic product according to the present invention, Figure 4 is a cross-sectional view showing the main portion of the electromagnetic shielding grounding device shown in FIG.

도 3을 참조하면, 본 발명의 실시예에 따른 전자제품은 본체(30)와, 메인회로기판(40)과, 커넥터(50) 및 접지판(60)을 구비한다.Referring to FIG. 3, an electronic product according to an embodiment of the present invention includes a main body 30, a main circuit board 40, a connector 50, and a ground plate 60.

상기 본체(30)의 내부에는 메인회로기판(40)이 설치되며, 후면패널(31)에는 복수의 관통공(311)이 형성되어 있다. 상기 메인회로기판(40)에는 복수의 회로부품들(미도시)이 납땜 또는 표면실장 등의 방법으로 설치되어 전자제품의 전기적인 신호처리를 수행한다. The main circuit board 40 is installed in the main body 30, and a plurality of through holes 311 are formed in the rear panel 31. A plurality of circuit components (not shown) are installed on the main circuit board 40 by soldering or surface mounting to perform electrical signal processing of electronic products.                     

상기 커넥터(50)는 일명 알씨에이 잭(RCA Jack)이라고 불리며, 상기 메인회로기판(40)에 고정되며, 도 4에 도시된 바와 같이 커넥터(50)의 중심에는 금속재질의 동축심(51)이 마련되고, 동축심(51)을 둘러싸는 몰드재질의 보스부(53)와, 보스부(53)의 외주면에는 금속단자(52)가 구비되어 있다. 상기 커넥터(50)의 동축심(51)과 금속단자(52)는 메인회로기판(40)의 영상 및 음성 입출력와이어(54)와 전기적으로 연결되어, 영상 및 음성신호를 외부기기(미도시)와 연결하는 기능을 수행한다.The connector 50 is called an RCA jack, and is fixed to the main circuit board 40, and as shown in FIG. 4, a coaxial core 51 made of metal is formed at the center of the connector 50. And a boss portion 53 of a mold material surrounding the coaxial core 51 and a metal terminal 52 on the outer circumferential surface of the boss portion 53. The coaxial core 51 and the metal terminal 52 of the connector 50 are electrically connected to the video and audio input / output wires 54 of the main circuit board 40 to transmit video and audio signals to an external device (not shown). Function to connect with.

상기 접지판(60)은 구리(Cu)와 같이 전도성이 우수한 금속재질의 박판을 프레스 공정으로 제작되며, 상기 커넥터(50)와 상기 후면패널(31) 사이에 설치된다. 상기 접지판(60)에는 상기 커넥터(50)가 끼워지는 복수의 삽입공(601)이 형성되어 있으며, 상기 커넥터(50)가 상기 삽입공(601)에 끼워진 상태에서 접지판(60)과 커넥터(50)의 금속단자(52)와 탄성변형이 가능가게 접촉되도록 접지판(60)으로부터 돌출되어 형성된 복수의 돌기(62)가 구비되어 있다. 그리고, 도 4에 도시된 바와 같이 상기 후면패널(31)과 대면하는 접지판(60)에는 접지판(60)의 일부를 프레스가공에 의해 형성한 돌출편(64)이 형성되어 있어서 후면패널(31)와 전기적으로 연결된다. The ground plate 60 is manufactured by pressing a thin plate made of a metal having excellent conductivity such as copper (Cu), and is installed between the connector 50 and the rear panel 31. The ground plate 60 is provided with a plurality of insertion holes 601 into which the connector 50 is inserted, and the ground plate 60 and the connector in a state where the connector 50 is fitted into the insertion hole 601. A plurality of protrusions 62 protruding from the ground plate 60 are provided so that the metal terminals 52 of the 50 and elastic deformation can be contacted with each other. In addition, as illustrated in FIG. 4, the ground plate 60 facing the rear panel 31 is provided with a protrusion piece 64 formed by pressing a part of the ground plate 60 to form a rear panel ( 31) and electrically connected.

여기서, 상기 접지판(60)은 복수개의 커넥터(50)에 대응되는 삽입공(601)과 본체(30)에 접지시키기 위한 돌출편(64)을 동시에 프레스가공으로 제작함으로써, 종래의 접지장치에서와 같이 각 커넥터마다 필요한 접지용 전자파필터(25; 도 2a 참조)나 지지부재(26; 도 2b 참조) 및 나사(27; 도 2b 참조)를 사용하지 않고도 전 자파를 효율적으로 제거할 수 있다.Here, the ground plate 60 is produced by press-working at the same time by pressing the insertion piece 601 corresponding to the plurality of connectors 50 and the projection piece 64 for grounding the main body 30, in the conventional grounding device As described above, the electromagnetic wave can be efficiently removed without using the electromagnetic wave filter 25 (see FIG. 2A) or the supporting member 26 (see FIG. 2B) and the screw 27 (see FIG. 2B) required for each connector.

상술한 바와 같이 구성된 본 발명의 전자제품은 상기 메인회로기판(40)으로부터 커넥터(50)를 통하여 출력되는 영상 및 음성신호에 포함되는 전자파(EMI)는 커넥터(50)의 금속단자(52)에 접촉되는 접지판(60)의 돌기(62)를 통하여 접지판(60)으로 흐르고, 또한, 접지판(60)의 돌출편(64)에 접촉된 후면패널(31)를 통하여 본체(30)로 접지됨으로써 소멸되게 된다. In the electronic device of the present invention configured as described above, the electromagnetic wave (EMI) included in the video and audio signals outputted from the main circuit board 40 through the connector 50 is transferred to the metal terminal 52 of the connector 50. It flows to the ground plate 60 through the protrusion 62 of the ground plate 60 which is in contact, and also to the main body 30 through the rear panel 31 which is in contact with the protruding piece 64 of the ground plate 60. It is destroyed by being grounded.

상술한 바와 같이, 본 발명에 따른 전자제품의 전자파 차폐용 접지장치에 의하면, 디지탈 비디오 디스크 플레이어(DVDP)등과 같이 외부기기로 영상 및 음성신호를 출력하기 위한 커넥터와 본체를 전기적으로 접지되도록 설치된 접지판을 구비함으로써, 커넥터를 통하여 방사되는 전자파가 효율적으로 제거되어 외부기기로 출력되는 영상 및 음성신호에 포함되는 노이즈가 억제 된다.As described above, according to the grounding device for shielding electromagnetic waves of electronic products according to the present invention, a ground provided to electrically ground the connector and the main body for outputting video and audio signals to an external device, such as a digital video disk player (DVDP). By providing the plate, the electromagnetic wave radiated through the connector is efficiently removed to suppress noise included in the video and audio signals output to the external device.

또한, 상기 접지판에 프레스가공으로 복수개의 커넥터에 대응되는 삽입공과 돌기 및 돌출편을 일체로 형성함으로써, 부품수 및 작업공정수를 감소시킬 수 있게 되어 제조원가를 절감할 수 있는 효과가 있다.In addition, by integrally forming the insertion hole corresponding to the plurality of connectors and the projections and protrusions by pressing on the ground plate, it is possible to reduce the number of parts and the number of work processes, thereby reducing the manufacturing cost.

Claims (4)

삭제delete 전자제품의 본체 내부에 설치되는 회로기판과; A circuit board installed inside the main body of the electronic product; 상기 회로기판으로부터 본체 외부기기와 전기적인 신호를 연결하기 위한 동축심과 금속단자로 이루어진 커넥터와; A connector made of a coaxial core and a metal terminal for connecting an electrical signal to the external device from the circuit board; 상기 커넥터의 금속단자가 삽입되도록 관통공이 형성된 후면패널; 및 A rear panel having a through hole formed to insert the metal terminal of the connector; And 상기 커넥터와 결합된 상태에서 금속단자와 전기적으로 접촉되도록 형성된 돌기와, 상기 후면패널와 전기적으로 접촉되도록 벤딩공정에 의해 형성된 돌출편을 구비하는 접지판;을 구비하며,And a ground plate having a protrusion formed to be in electrical contact with the metal terminal in a coupled state with the connector, and a protrusion piece formed by a bending process to be in electrical contact with the rear panel. 상기 접지판에는 상기 금속단자가 삽입되도록 삽입공이 형성되며, Inserting holes are formed in the ground plate to insert the metal terminal, 상기 돌기(64)는 상기 금속단자(52)가 상기 삽입공에 삽입될 때에 탄성변형되어 상기 금속단자와 접촉되도록 상기 삽입공의 내측으로 돌출되어 형성된 것을 특징으로 하는 전자제품의 전자파 차폐용 접지장치.The projections 64 are formed when the metal terminal 52 is elastically deformed when the metal terminal 52 is inserted into the insertion hole so as to protrude into the insertion hole so as to contact the metal terminal. . 제2항에 있어서,The method of claim 2, 상기 접지판은 구리재질인 것을 특징으로 하는 전자제품의 전자파 차폐용 접지장치.The grounding plate is a grounding device for electromagnetic shielding of electronic products, characterized in that the copper material. 제2항 또는 제3항에 있어서,The method according to claim 2 or 3, 상기 접지판은 프레스공정으로 가공되어 형성된 것을 특징으로 하는 전자제품의 전자파 차폐용 접지장치.The grounding plate is a grounding device for shielding electromagnetic waves of electronic products, characterized in that formed by a pressing process.
KR1020000031448A 2000-06-08 2000-06-08 Ground apparatus for shielding EMI of electronics appliance KR100708088B1 (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
KR19990003023U (en) * 1997-06-30 1999-01-25 배순훈 Grounding Structure of Audio / Video Signal Input / Output Jacks for Tape Recorders
KR19990013585U (en) * 1997-09-27 1999-04-15 전주범 Grounding Structure of Audio / Video Signal Input / Output Jacks for Video Cassette Recorders
KR19990014609U (en) * 1997-10-07 1999-05-06 전주범 Grounding structure of I / O terminal for electronic products

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990003023U (en) * 1997-06-30 1999-01-25 배순훈 Grounding Structure of Audio / Video Signal Input / Output Jacks for Tape Recorders
KR19990013585U (en) * 1997-09-27 1999-04-15 전주범 Grounding Structure of Audio / Video Signal Input / Output Jacks for Video Cassette Recorders
KR19990014609U (en) * 1997-10-07 1999-05-06 전주범 Grounding structure of I / O terminal for electronic products

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