KR20040069030A - A Thin Plate Type Current Transformer - Google Patents

A Thin Plate Type Current Transformer Download PDF

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Publication number
KR20040069030A
KR20040069030A KR1020030005441A KR20030005441A KR20040069030A KR 20040069030 A KR20040069030 A KR 20040069030A KR 1020030005441 A KR1020030005441 A KR 1020030005441A KR 20030005441 A KR20030005441 A KR 20030005441A KR 20040069030 A KR20040069030 A KR 20040069030A
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KR
South Korea
Prior art keywords
current transformer
case
circuit board
coil
thin plate
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KR1020030005441A
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Korean (ko)
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노진석
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노진석
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Priority to KR1020030005441A priority Critical patent/KR20040069030A/en
Publication of KR20040069030A publication Critical patent/KR20040069030A/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/022Encapsulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/04Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

PURPOSE: A thin film type current transformer is provided to prevent the damage of the current transformer due to the external impact and improve productivity by enhancing workability. CONSTITUTION: A thin film type current transformer(10) comprises a molded case(11) and a stack current coil buried into the molded case. An electrode terminal is exposed toward the lower side of the case. A top side and a lateral side of the case are closed and a bottom side of the case is open. The stack current coil is formed by epoxy molding.

Description

박판형 커런트 트랜스포머{A Thin Plate Type Current Transformer}Thin Plate Type Current Transformer

본 발명은 전자기기에 사용되는 커런트 트랜스포머를 개선하여 박판(薄板)형으로 형성하여서 된 박판형 커런트 트랜스포머에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin current transformer, which is formed by improving the current transformer used in electronic equipment to form a thin plate shape.

이를 좀더 상세히 설명하면, 넓이가 넓고 높이가 낮은 케이스(case)형으로 형성된 사출물 케이스에 페라이트코어를 내부에 매설하여 줌으로서 커런트 트랜스포머의 높이를 낮게 형성해 주도록 된 것이다.In more detail, the ferrite core is embedded in the injection case formed in a case type having a wide width and a low height to form a low height of the current transformer.

통상적으로 전자기기에 사용되어지는 커런트 트랜스포머는 인쇄회로기판(PCB)에 접합시켜야 하기 때문에 소형화 및 박판형화가 절실히 요구되어 있다.In general, current transformers used in electronic devices have to be bonded to a printed circuit board (PCB), so miniaturization and thickness reduction are urgently required.

도 1은 통상적으로 사용되고 있는 종래의 커런트 트랜스포머(1)를 보인 것으로서, 페라이트코어(2)의 내부에 코일(3)을 삽입 고정시키되 클램프(4)를 이용하여 고정되어 있고, 페라이트코어(2)의 하측으로 동박단자(5)가 노출되어 있다.1 shows a conventional current transformer 1 which is commonly used. The coil 3 is inserted into and fixed in the ferrite core 2, and is fixed using the clamp 4, and the ferrite core 2 is fixed. The copper foil terminal 5 is exposed below.

그러나 이와 같이 구성된 종래의 커런트 트랜스포머(1)는 다음과 같은 문제가 단점으로 지적된다.However, in the conventional current transformer 1 configured as described above, the following problems are pointed out as disadvantages.

코일(3)은 폭이 좁으면서도 높이가 높은 보빈에 동선이 감겨져 있으므로, 종래의 커런트 트랜스포머(1)의 폭(W1)은 좁으면서도 높이(H1)는 높아지게 된다.Since the copper wire is wound around the bobbin which has a narrow width | variety and a high height, the height H1 becomes high, although the width W1 of the conventional current transformer 1 is narrow.

이와 같이 폭(W1)은 좁으면서도 높이(H1)가 높은 종래의 커런트 트랜스포머(1)를 도 2에 예시된바와 같이 인쇄회로기판(6)에 설치하게 되면 인쇄회로기판(6)의 높이(H2)에 커런트 트랜스포머(1)의 높이(H1)가 적층되어 매우 높은(H1 + H2)상태를 유지하게 되므로 주변에 설치되는 전자부품들의 높이 위로 크게 돌출되어지고, 이로 인해 주변의 전자부품들과 조화롭지 못할 뿐만 아니라 다른 부품을 조립시킬 때에 충돌이 발생하는 등 다른 부품을 용이하게 설치할 수 없는 문제가 있었다.Thus, when the conventional current transformer 1 having a narrow width W1 and a high height H1 is installed on the printed circuit board 6 as illustrated in FIG. 2, the height H2 of the printed circuit board 6 is shown. Since the height H1 of the current transformer 1 is stacked and maintained at a very high level (H1 + H2), the current transformer protrudes largely above the height of the electronic components installed therein, which is incompatible with the surrounding electronic components. Not only that, there is a problem in that other components cannot be easily installed, such as a collision when assembling other components.

종래의 커런트 트랜스포머(1)를 인쇄회로기판(6)에 설치할 때에 전체적은 설치높이를 낮추기 위하여 도 2에 예시된바와 같이 인쇄회로기판(6)에 설치공(7)을통공하고, 설치공(7)의 내부에 커런트 트랜스포머(1)를 삽입하여 설치함으로써 설치되는 높이(H1 - H2)를 낮출 수는 있었으나, 인쇄회로기판(6)에 설치공(7)을 통공시키는 공정을 별도로 실시하여야 하는 번거로움이 있었고, 설치공(7)을 통공시키므로 작업공정이 추기 되어 작업성(능률)이 떨어지는 문제가 있었으며, 설치공(7)을 통공시키기 위한 장치를 구비하여야 하므로 경제적이 부담이 가중되는 문제가 있었다.In order to lower the overall installation height when installing the current current transformer 1 on the printed circuit board 6, the installation hole 7 is made to pass through the installation hole 7 in the printed circuit board 6 as illustrated in FIG. 7) The height H1-H2 can be lowered by inserting and installing the current transformer 1 into the interior. However, the process of opening the installation hole 7 through the printed circuit board 6 must be performed separately. There was a hassle, there is a problem that work process (additional efficiency) is reduced because the work process is added through the installation hole (7), the problem that the economic burden is increased because it must be provided with a device for through the installation hole (7) There was.

특히 종래의 커런트 트랜스포머(1)를 인쇄회로기판(6)에 설치하게 되면 인쇄회로기판(6)의 상측으로 높게 돌출되므로 외부의 물질에 의해 쉽게 충격(타격)이 가해져 손상되는 등의 문제가 있었다.In particular, when the current current transformer 1 is installed on the printed circuit board 6, the current transformer 1 is protruded to the upper side of the printed circuit board 6, and thus, there is a problem such that the external material is easily impacted (damaged) and damaged. .

본 발명은 상기와 같은 문제를 해소할 수 있도록 개선된 박판형 커런트 트랜스포머를 제공하려는 것이다.The present invention is to provide an improved thin-film current transformer to solve the above problems.

본 발명은 넓이가 넓고 높이가 낮은 케이스(case)형으로 형성된 적층커런트코일을 페라이트하우징의 내부에 매설하여 높이를 현저하게 낮게 형성하여서 된 커런트 트랜스포머를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a current transformer in which a laminated current coil formed in a case type having a wide width and a low height is embedded in a ferrite housing to form a significantly low height.

본 발명의 다른 목적은 높이를 현저히 낮게 형성하여 줌으로서 인쇄회로기판위에 별도의 설치공을 통공하지 않은 상태에서 직접 설치할 수 있도록 하고, 인쇄회로기판의 위에 직접 설치하더라도 설치 높이 높지 않도록 하여 주변에 설치되는 전자부품과 조화를 유지시키면서 다른 전자부품을 용이하게 설치할 수 있으며, 인쇄회로기판의 위에 직접 설치함으로서 작업성(능률)을 향상시킬 수 있도록 할 수있도록 된 커런트 트랜스포머를 제공하는데 있다.Another object of the present invention is to form a significantly lower height to be installed directly in the state without a separate installation hole on the printed circuit board, even if installed directly on top of the printed circuit board to be installed in the installation height is not high The present invention provides a current transformer that can easily install other electronic components while maintaining harmony with electronic components, and improve workability by installing directly on a printed circuit board.

본 발명의 상기 및 기타 목적은,The above and other objects of the present invention,

케이스(11)의 내부에 커런트코일을 삽입 고정시키고, 케이스(11)의 하측으로 전극단자(13)를 노출시켜서 된 것에 있어서,In the case where the current coil is inserted into the case 11 and the electrode terminal 13 is exposed to the lower side of the case 11,

상기 케이스(11)를 상면과 측면이 폐쇄되고 저면이 개방되는 박판형으로 형성하고, 에폭시 몰딩 시켜 적층커런트코일(12)을 형성하며, 상기 적층커런트코일(12)을 케이스(11)에 삽입하여 매설시킨 것을 특징으로 하는 커런트트랜스포머(10)에 의해 달성된다.The case 11 is formed in a thin plate shape in which the top and side surfaces are closed and the bottom is opened, and epoxy molding is performed to form the laminated current coil 12, and the laminated current coil 12 is inserted into the case 11 to be embedded. It is achieved by the current transformer 10 characterized in that.

도 1은 종래의 커런트 트랜스포머를 보인 사시도.1 is a perspective view showing a conventional current transformer.

도 2는 종래의 커런트 트랜스포머를 회로기판에 설치한 상태의 예시도.2 is an exemplary view of a state in which a conventional current transformer is installed on a circuit board.

도 3은 본 발명에 따른 박판형 커런트 트랜스포머를 보인 사이도.3 is a view showing a thin current transformer according to the present invention.

도 4는 본 발명에 따른 박판형 커런트 트랜스포머를 회로기판에 설치한 상태 의 예시도.Figure 4 is an illustration of a state in which a thin plate current transformer according to the invention installed on a circuit board.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1.10. 커런트 트랜스포머 2. 페라이트코어 3. 코일1.10. Current Transformers 2. Ferrite Cores 3. Coils

4. 동박단자 5. 13. 전극단자 6. 인쇄회로기판4. Copper foil terminal 5. 13. Electrode terminal 6. Printed circuit board

11. 사출케이스 12. 적층커런트코일11. Injection Case 12. Laminated Current Coil

본 발명의 상기 및 기타 목적과 특징은 첨부도면에 의거한 다음의 상세한 설명에 의해 더욱 명확하게 이해할 수 있을 것이다.The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

첨부도면 도 3 및 도 4는 본 발명에 따른 커런트트랜스포머(10)의 구체적인 실현 예를 보인 것으로써, 도 3은 본 발명의 사시도이고, 도 4는 본 관의 설치상태를 보인 예시도이다.3 and 4 show a specific implementation of the current transformer 10 according to the present invention, FIG. 3 is a perspective view of the present invention, and FIG. 4 is an exemplary view showing an installation state of the tube.

본 발명에 따른 커런트트랜스포머(10)는 사출된 케이스(11)와 그 내부에 매설되는 적층커런트코일(12)로 형성하였다.The current transformer 10 according to the present invention was formed of an extruded case 11 and a laminated current coil 12 embedded therein.

케이스(11)는 높이(H3)를 얇게 하면서 폭(W2)을 넓게 형성하되 상면과 전후좌우의 측면을 폐쇄시키고 저면을 개방형으로 형성하였다.The case 11 was formed with a wide width W2 while thinning the height H3, but closing the sides of the top, front, left, and right sides, and forming the bottom surface in an open type.

적층커런트코일(12)은 시트(바람직하기로 그린시트)에 Ag, Cu, Au 등과 같은 도전성 페이스로 도전성 패턴 즉 일차코일과 이차코일을 인쇄하되, 일차코일과 이차코일에는 노출전극을 형성하고, 이와 같이 도전성 패턴이 형성된 여러 장의 그린시트를 일체형으로 적층시켜 줌으로써 형성을 완료할 수 있게 된다.The laminated current coil 12 prints a conductive pattern, that is, a primary coil and a secondary coil on a sheet (preferably green sheet) with a conductive face such as Ag, Cu, Au, etc., but forms an exposed electrode on the primary coil and the secondary coil, As such, by forming a plurality of green sheets with conductive patterns integrally stacked, the formation can be completed.

상기와 같이 도전성패턴이 인쇄된 여러 장의 그린시트를 적층시켜 적층커런트코일(12)을 형성하는 것은 이미 공지된 기술 사상이므로 보다 구체적인 설명은 생략하기로 한다.Since the stacked current coil 12 is formed by stacking a plurality of green sheets printed with conductive patterns as described above, a detailed description thereof will be omitted.

상기 적층커런트코일(12)은 여러 장의 그린시트를 적층시킨 것이므로 그 두께를 얇게 유지시킬 수 있게 된다.Since the laminated current coil 12 is obtained by stacking a plurality of green sheets, the thickness can be maintained thin.

이와 같이 형성된 적층커런트코일(12)을 케이스(11)에 삽입하여 일체형으로 고정시켜 줌으로서 커런트트랜스포머(10)를 완성하게 되며, 이와 같이 제조되는 커런트트랜스포머(10)는 두께가 얇은 적층커런트코일(12)을 케이스(11)에 삽입하여 형성시킨 것이므로 그 높이(H3)를 현저하게 낮춰 박판(薄板)형으로 형성할 수 있게 된다.The current transformer 10 is completed by inserting the laminated current coil 12 formed in this case into the case 11 to fix it integrally. The current transformer 10 manufactured as described above has a thin laminated current coil ( Since 12) is inserted into the case 11, the height H3 is considerably lowered to form a thin plate.

이와 같이 박판(薄板)형으로 형성된 커런트트랜스포머(10)는 높이(H3)가 낮으므로 도 4에 예시된바와 같이 인쇄회로기판(6)의 위에 직접 설치할 수 있게 되는데, 커런트트랜스포머(10)를 인쇄회로기판(6)의 위에 직접 설치하더라도 낮은 높이(H3)만이 상측으로 돌출되므로 인근에 설치되는 전자부품들과 거의 대등하거나 오히려 낮은 높이를 유지하게 되고, 따라서 인접하는 전자부품을 용이하게 설치할 수 있게 된다.Since the current transformer 10 formed in a thin plate shape has a low height H3, the current transformer 10 may be directly installed on the printed circuit board 6 as illustrated in FIG. 4, and the current transformer 10 may be printed. Even if directly installed on the circuit board 6, only the low height (H3) protrudes upwards, so that it is almost equal to or rather low than the electronic components installed nearby, so that adjacent electronic components can be easily installed. do.

또한 커런트트랜스포머(10)를 인쇄회로기판(6)의 위에 설치할 때에 종래와 같이 설치공을 통공하지 않아도 되므로 보다 용이하게 설치할 수 있고, 따라서 작업성(능률)을 양호하게 하므로 생산성을 크게 향상시킬 수 있게 된다.In addition, when the current transformer 10 is installed on the printed circuit board 6, it is not necessary to pass through the installation hole as in the related art, so that the current transformer 10 can be installed more easily. Therefore, the workability (efficiency) can be improved, thereby greatly improving the productivity. Will be.

특히, 인쇄회로기판(6)의 위에 설치된 커런트트랜스포머(10)가 상측으로 크게 노출되지 않고 낮은 상태를 유지하게 되므로 외부의 물질에 의해 쉽게 충격(타격)이 가해지지 않게 되며, 따라서 외부의 충격에 의해 손상되는 것 등을 방지할 수 있게 된다.In particular, since the current transformer 10 installed on the printed circuit board 6 is maintained in a low state without being largely exposed upwards, the current transformer is not easily impacted (attached) by an external material, thus preventing external impact. Can be prevented from being damaged.

이상에서 와같이 본 발명에 따른 커런트트랜스포머는, 도전성코일패턴이 형성된 그린시트를 적층시켜 형성된 박판형의 적층커런트코일을 페라이트코어에 삽입 매설한 것이므로 그 두께를 얇게 유지시킬 수 있게 되고, 따라서 이를 인쇄회로기판의 위에 설치하더라도 상측으로 낮게 돌출되어 인접하는 전자부품과 동일한 높이를 유지하거나 오히려 낮은 높이를 유지하게 되므로 외부 물질에 의해 타격되어 손상되는 것을 방지할 수 있게 되며, 인쇄회로기판에 직접 설치할 수 있으므로 작업성을 양호하게 하여 생산성을 크게 향상시킬 수 있게 된다.As described above, in the current transformer according to the present invention, since a thin laminated current coil formed by stacking a green sheet having a conductive coil pattern is embedded in a ferrite core, the current transformer can be kept thin and thus printed circuit. Even if it is installed on the board, it protrudes low to the upper side and maintains the same height as the adjacent electronic components or rather keeps the low height, so that it can be prevented from being damaged by external materials and can be installed directly on the printed circuit board. It is possible to improve productivity by greatly improving workability.

Claims (1)

케이스(11)의 내부에 커런트코일을 삽입 고정시키고, 케이스(11)의 하측으로 전극단자(13)를 노출시켜서 된 것에 있어서,In the case where the current coil is inserted into the case 11 and the electrode terminal 13 is exposed to the lower side of the case 11, 상기 케이스(11)를 상면과 측면이 폐쇄되고 저면이 개방되는 박판형으로 형성하고, 에폭시 몰딩 시켜 적층커런트코일(12)을 형성하며, 상기 적층커런트코일(12)을 케이스(11)에 삽입하여 매설시킨 것을 특징으로 하는 박판형 커런트 트랜스포머.The case 11 is formed in a thin plate shape in which the top and side surfaces are closed and the bottom is opened, and epoxy molding is performed to form the laminated current coil 12, and the laminated current coil 12 is inserted into the case 11 to be embedded. Thin current transformer, characterized in that.
KR1020030005441A 2003-01-28 2003-01-28 A Thin Plate Type Current Transformer KR20040069030A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9773630B2 (en) 2014-12-03 2017-09-26 Lsis Co., Ltd. Apparatus for remotely operating handle of circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9773630B2 (en) 2014-12-03 2017-09-26 Lsis Co., Ltd. Apparatus for remotely operating handle of circuit breaker

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