WO2012046965A2 - Shield can-fixing clip for blocking electromagnetic waves - Google Patents

Shield can-fixing clip for blocking electromagnetic waves Download PDF

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Publication number
WO2012046965A2
WO2012046965A2 PCT/KR2011/006999 KR2011006999W WO2012046965A2 WO 2012046965 A2 WO2012046965 A2 WO 2012046965A2 KR 2011006999 W KR2011006999 W KR 2011006999W WO 2012046965 A2 WO2012046965 A2 WO 2012046965A2
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WO
WIPO (PCT)
Prior art keywords
shield
fixing clip
circuit board
printed circuit
base
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Application number
PCT/KR2011/006999
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French (fr)
Korean (ko)
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WO2012046965A3 (en
Inventor
윤영표
김경훈
Original Assignee
주식회사 케이티엑스
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Application filed by 주식회사 케이티엑스 filed Critical 주식회사 케이티엑스
Priority to CN2011800456979A priority Critical patent/CN103168510A/en
Publication of WO2012046965A2 publication Critical patent/WO2012046965A2/en
Publication of WO2012046965A3 publication Critical patent/WO2012046965A3/en

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    • 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
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening
    • H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
    • H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
    • H05K9/0032—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids
    • H05K9/0035—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids with retainers mounted beforehand on the PCB, e.g. clips

Definitions

  • the present invention relates to a shield can fixing clip for shielding electromagnetic waves for fixing a shield can provided to cover an electronic component such as a semiconductor mounted on a printed circuit board to the printed circuit board.
  • the bottom surface of the base attached to the contacted state is flat to increase the contact area, and the groove on which the insertion end of the shield can can be fitted is provided on the upper surface of the base to improve the electromagnetic shielding effect and the ground state of the shield can. It is easily configured to maximize the shielding effect of the electromagnetic wave through the grounding state, and it is not plated at the insertion part of the clip, thereby minimizing the contact resistance. It is about.
  • electromagnetic waves have useful side effects such as wireless communication and radar, they may adversely affect the operation of electronic devices.
  • This phenomenon is called an electromagnetic interference (EMI) phenomenon. Not only does it generate noise, but also harmful to human body.
  • EMI electromagnetic interference
  • Such a shield can is typically installed on a printed circuit board through a shield can fixing clip for blocking electromagnetic waves coupled to the printed circuit board to clamp the sidewall of the shield can.
  • FIG. 6 is a perspective view of a conventional shield can fixing clip for blocking electromagnetic waves.
  • the conventional shield can fixing clip 1 for blocking electromagnetic waves is largely composed of four parts, which include a plurality of fixing parts 2 attached to a printed circuit board and a connecting part 5. It is composed of a base (4) spaced upwardly with respect to the fixing part (2) via a medium, and a clamping part (3) provided between the fixing part (2) by vertically bending the side of the base (4) .
  • the installation of the conventional shield can fixing clip 1 for electromagnetic wave blocking is usually performed through an automatic soldering process by surface mount technology (SMT) equipment.
  • SMT surface mount technology
  • the conventional shield can fixing clip 1 for electromagnetic shielding is vacuum-adsorbed through a nozzle of an SMT device and is automatically attached and fixed by being seated on a solder cream screened on a surface of a printed circuit board.
  • the conventional shield can fixing clip 1 for electromagnetic wave blocking is formed by plating nickel / tin as a whole so as to be attached to a solder cream.
  • the solder cream can be buried on the upper surface of the base (4) was configured by separating the base (4) with respect to the fixing part (2) through the connecting portion (5).
  • the conventional shield can fixing clip (1) for shielding electromagnetic waves when the shield can is fixed to the upper surface of the base (4) when the shield can is fixed by the clamping portion (3), the base Electromagnetic waves are exposed to the micro-gaps formed between the insertion portion of the shield can and the shield can, and a very large space is formed in the upper portion of the fixing portion 2, so that the shielding effect of the electromagnetic waves is very low.
  • the conventional shield can fixing clip 1 for electromagnetic wave blocking has a problem that the stability is very poor because the overall height of the shield can is increased due to the connecting portion (5).
  • the present invention has been made in view of the above problems, the first object of the present invention, by providing a groove that can be inserted into the insertion end of the shield can on the upper surface of the base to maximize the electromagnetic shielding effect
  • the present invention provides a clip for fixing a shield can for blocking electromagnetic waves of a structure.
  • the second object of the present invention by forming a nickel / tin plating layer on the bottom surface of the base portion in contact with the printed circuit board to prevent the solder cream from invading the upper surface of the base portion, the contact resistance between the shield can and the clip As this is minimized, the shielding effect is increased, and the base is flattened to increase the adhesion area with the printed circuit board to maximize the shielding effect of the electromagnetic waves, and lower the overall height of the shield can.
  • the present invention provides a shield can fixing clip for shielding electromagnetic waves having a structure capable of fixing the shield can.
  • the first invention is a shield can for shielding electromagnetic waves for fixing the shield can is provided to cover the electronic component mounted on the printed circuit board to the printed circuit board.
  • a fixing clip comprising: a base portion attached to a state of being in contact with the printed circuit board; and a pair of upwardly extending and bent to face each other of the base so as to pick up the sidewall of the shield can in a tongs shape Elastic piece; And a groove formed at a center in the center of the upper surface of the base to be inserted into an insertion end of the shield can.
  • the second invention in the first invention, preferably further comprises a nickel / tin plated plating layer on the bottom of the base portion.
  • each elastic piece has a vertical portion that is bent upwardly 90 degrees to the base, a pressing portion for bending the vertical portion inward to press the sidewall of the shield can, and starting from the pressing portion. It is configured to include a guide portion that is opened to the outside, the guide portion is preferably an angle ⁇ of the flare is 75 ° to 90 °.
  • the groove portion 11 is preferably configured by bending the central portion of the base portion 10 downwardly.
  • the shield can fixing clip for shielding electromagnetic waves according to the present invention has an effect of maximizing an electromagnetic shielding effect by providing a groove portion into which an insertion end of the shield can can be fitted on an upper surface of the base.
  • the base has a flat bottom surface to increase the adhesion area with the printed circuit board to maximize the shielding effect of electromagnetic waves, and to lower the overall height of the shield can, so that the shield can can be more stably fixed.
  • FIG. 2 is a perspective view of a shield can fixing clip for electromagnetic wave blocking according to the present invention
  • FIG. 3 is a bottom perspective view of FIG.
  • FIG. 4 is a cross-sectional view showing the shield can is coupled to the shield can fixing clip for electromagnetic wave blocking
  • FIG. 5 is a bottom perspective view showing a groove part of another embodiment in a shield can fixing clip for shielding electromagnetic waves according to the present invention
  • FIG. 6 is a perspective view of a conventional shield can fixing clip for blocking electromagnetic waves.
  • FIG. 1 is a state of use of the shield can fixing clip for electromagnetic wave blocking according to the present invention
  • Figure 2 is a perspective view of the shield can fixing clip for electromagnetic shielding according to the present invention
  • Figure 3 is a bottom perspective view of Figure 2
  • Figure 4 is a cross-sectional view illustrating a shield can coupled to a shield can fixing clip for shielding electromagnetic waves
  • FIG. 5 is a bottom perspective view showing a groove of another embodiment of the shield can fixing clip for shielding electromagnetic waves according to the present invention.
  • the present invention provides a method for fixing a shield can 50 to an electronic component 60 such as a semiconductor mounted on a printed circuit board 40 to the printed circuit board 40.
  • Electromagnetic shielding shield can fixing clip 30 the bottom surface of the base portion 10 attached in contact with the printed circuit board 40 is formed flat to increase the adhesion area, and the base portion 10 It relates to a shield can fixing clip 30 for the electromagnetic shielding structure of the structure that can maximize the electromagnetic shielding effect by providing a groove portion 11 that can be inserted into the insertion end of the shield can 50 on the upper surface of the) .
  • the shield can fixing clip 30 for shielding electromagnetic waves is composed of three parts, which is a base part 10, an elastic piece part 20, and a groove part 11. It consists of.
  • the base portion 10 has a solder cream (soldering) screened on the surface of the printed circuit board 40 to fix the shield can fixing clip 30 for shielding electromagnetic waves, and the upper surface of the base portion 10. It is further configured to include a nickel / tin plated plating layer 12 on the bottom so as not to fall over.
  • the plating layer 12 is such that the solder cream is well attached to the shield can fixing clip 30 for shielding electromagnetic waves made of steel, the solder cream 41 is formed on the upper surface of the unplated base portion 10. This is to keep it from asking.
  • the base portion 10 is provided with a structure capable of flatly forming the entire bottom surface of the base portion 10.
  • the base portion 10 can be attached to the entire bottom surface in contact with the printed circuit board 40 to increase the contact area with the printed circuit board 40, and to increase the overall height of the shield can 50 It can be lowered to maximize the blocking effect of electromagnetic waves.
  • the plating layer 12 of the present invention is formed only on the bottom surface of the base portion 10, thereby minimizing the contact resistance between the unplated elastic piece and the shield can, thereby maximizing the blocking effect of electromagnetic waves.
  • Table 1 Contact resistance between the unplated elastic piece of the present invention and the shield can Contact resistance between conventional plated elastic piece and shield can 1 time 0.036 ⁇ 0.5 ⁇ Episode 2 0.036 ⁇ 0.4 ⁇ 3rd time 0.038 ⁇ 0.7 ⁇
  • the contact resistance was tested three times, and the contact resistance between the non-plated elastic piece and the shield can of the present invention was 10 times lower than that of the conventional plated elastic piece and the shield can. You can check it.
  • the electromagnetic wave shielding effect of the present invention is very large as the shielding effect of the electromagnetic wave is increased.
  • the elastic piece portion 20 is a structure that is bent upwardly extended to face each other on both sides of the base portion 10 so as to pick up the side wall of the shield can 50 in the form of tongs.
  • the elastic piece portion 20 is formed in a pair along the longitudinal direction of the base portion 10 to more stably pick up the side surface of the shield can (50).
  • each of the elastic piece portion 20 is a vertical portion 21 is bent 90 degrees vertically upwards to the base portion 10, and the vertical portion 21 is bent inward to press the side of the shield can 50 Compression part 22 and the guide part 23 which spreads outward from the said compression part 22 are comprised.
  • Such a configuration facilitates the entry of the shield can 50 through the guide portion 23, and presses the sidewall of the shield can 50 through the pressing portion 22 so that the shield can 50 is the elastic piece portion 20.
  • the guide portion 23 preferably has an angle ⁇ of 75 ° to 90 °. This is not preferable because the angle of the guide portion 23 is greater than 90 ° because the force is applied to the elastic piece 20 when the shield can 50 is inserted, and deformation of the elastic piece 20 may occur. In the case of the following, since insertion of the shield can 50 is difficult, it is not preferable.
  • the groove 11 is formed in the longitudinal direction in the center of the upper surface of the base portion 10 is a structure that the insertion end of the shield can 50 is fitted.
  • This structure is a structure that can further block the electromagnetic wave by inserting the insertion end of the shield can 50 into the groove 11 to completely shield the outside of the shield can 50. This is possible because the insertion end of the shield can 50 is in surface contact with the groove 11.
  • the groove 11 may be configured by bending downward the central portion of the base 10.
  • This structure provides a structure capable of further solidifying the shield can 50 by providing elasticity to the groove 11.

Abstract

Provided is a shield can-fixing clip for blocking electromagnetic waves, wherein a shield can, which is configured to cover electronic components that are mounted on a printed circuit board, is fixed to said printed circuit board, and to this end, the clip comprises: a base unit that is attached in an abutting state onto said printed circuit board; one pair of elastic parts that are upwardly extended and bent to face each other on both sides of a base, so as to grip a sidewall of said shield can in a tong-like manner; and a groove part that is formed in a lengthwise direction on the center of an upper surface of said base unit, so that an insertable end of the shield can is inserted and coupled therewith.

Description

전자파 차단용 쉴드캔 고정용 클립Shield can fixing clip for electromagnetic wave shield
본 발명은 인쇄회로기판에 실장된 반도체와 같은 전자부품을 덮도록 마련되는 쉴드캔을 상기 인쇄회로기판에 고정시키기 위한 전자파 차단용 쉴드캔 고정용 클립에 관한 것으로, 보다 상세하게는 인쇄회로기판과 접한 상태로 부착되는 베이스부의 저면을 평편하게 구성하여 밀착면적을 증대시키고, 더불어 베이스의 상부면에 쉴드캔의 삽입단부가 끼움결합될 수 있는 홈부를 마련하여 전자파 차폐효과 및 쉴드캔의 접지 상태를 용이하게 구성되어 접지상태를 통한 전자파 차폐효과를 극대화하며, 클립의 삽입되는 부위에는 도금처리를 하지 않아 접촉저항을 최소화 함으로서 전자파 차폐효과를 최대로 할 수 있는 구조의 전자파 차단용 쉴드캔 고정용 클립에 관한 것이다. The present invention relates to a shield can fixing clip for shielding electromagnetic waves for fixing a shield can provided to cover an electronic component such as a semiconductor mounted on a printed circuit board to the printed circuit board. The bottom surface of the base attached to the contacted state is flat to increase the contact area, and the groove on which the insertion end of the shield can can be fitted is provided on the upper surface of the base to improve the electromagnetic shielding effect and the ground state of the shield can. It is easily configured to maximize the shielding effect of the electromagnetic wave through the grounding state, and it is not plated at the insertion part of the clip, thereby minimizing the contact resistance. It is about.
일반적으로 전자파는 무선통신이나 레이더와 같이 유용하게 쓰이는 측면이 있는 반면 전자기기의 동작에 악영향을 미칠 수도 있는데, 이러한 현상을 전자파 장애(EMI: Electro Magnetic Interference) 현상이라 하며, 이러한 EMI는 전자기기의 노이즈를 발생시킴은 물론 인체에도 유해한 요소로 작용한다.In general, while electromagnetic waves have useful side effects such as wireless communication and radar, they may adversely affect the operation of electronic devices. This phenomenon is called an electromagnetic interference (EMI) phenomenon. Not only does it generate noise, but also harmful to human body.
따라서 최근에는 전자기기 내부 인쇄회로기판 상에 실장되는 반도체소자와 같은 전자부품들을 소정의 쉴드캔으로 덮어 상기 전자부품들로부터 발생하게 되는 EMI를 차단함으로써 자체 전자기기는 물론 타 전자기기의 동작에 영향을 미치지 못하도록 하고 있다.Therefore, recently, by covering certain electronic components such as semiconductor devices mounted on the printed circuit board inside the electronic device with a predetermined shield can, EMI generated from the electronic components is blocked, thereby affecting the operation of the electronic device as well as other electronic devices. To keep you from falling.
이러한 쉴드캔은 통상 쉴드캔의 측벽을 클램핑하도록 인쇄회로기판에 결합되는 전자파 차단용 쉴드캔 고정용 클립을 통해 인쇄회로기판 상에 설치되고 있다.Such a shield can is typically installed on a printed circuit board through a shield can fixing clip for blocking electromagnetic waves coupled to the printed circuit board to clamp the sidewall of the shield can.
이하에서는 종래의 전자파 차단용 쉴드캔 고정용 클립에 관하여 첨부되어진 도면과 함께 더불어 간단히 설명하기로 한다.Hereinafter, the conventional shield can fixing clip for electromagnetic wave shield will be briefly described together with the accompanying drawings.
도 6은 종래의 전자파 차단용 쉴드캔 고정용 클립의 사시도이다.6 is a perspective view of a conventional shield can fixing clip for blocking electromagnetic waves.
도 6과 같이, 종래의 전자파 차단용 쉴드캔 고정용 클립(1)은 크게 4부분으로 구성되는데, 이는 인쇄회로기판에 상에 접한 상태로 부착되는 다수의 고정부(2)와, 연결부(5)를 매개로 고정부(2)에 대해 상향으로 이격된 베이스(4)와, 상기 베이스(4)의 측면을 수직 절곡시켜 고정부(2)의 사이에 마련되는 클램핑부(3)로 구성된다.As shown in FIG. 6, the conventional shield can fixing clip 1 for blocking electromagnetic waves is largely composed of four parts, which include a plurality of fixing parts 2 attached to a printed circuit board and a connecting part 5. It is composed of a base (4) spaced upwardly with respect to the fixing part (2) via a medium, and a clamping part (3) provided between the fixing part (2) by vertically bending the side of the base (4) .
여기서 종래의 전자파 차단용 쉴드캔 고정용 클립(1)의 설치는 통상 SMT(Surface Mount Technology)장비에 의한 자동 솔더링 공정을 통해 수행된다.Here, the installation of the conventional shield can fixing clip 1 for electromagnetic wave blocking is usually performed through an automatic soldering process by surface mount technology (SMT) equipment.
이러한 종래의 전자파 차단용 쉴드캔 고정용 클립(1)은 SMT장비의 노즐를 통해 진공흡착하여 인쇄회로기판의 표면에 스크린 처리된 솔더크림에 안착시켜 자동으로 부착 고정시킨다.The conventional shield can fixing clip 1 for electromagnetic shielding is vacuum-adsorbed through a nozzle of an SMT device and is automatically attached and fixed by being seated on a solder cream screened on a surface of a printed circuit board.
이 때 종래의 전자파 차단용 쉴드캔 고정용 클립(1)은 솔더크림에 부착될 수 있도록 전체적으로 니켈/주석을 도금처리하여 구성된다.In this case, the conventional shield can fixing clip 1 for electromagnetic wave blocking is formed by plating nickel / tin as a whole so as to be attached to a solder cream.
하지만 이런 니켈/주석 도금 처리로 인해 솔더크림이 베이스(4)의 상부면에 묻을 수 있기 때문에 연결부(5)를 통해 베이스(4)를 고정부(2)에 대해 이격시켜 구성하였다.However, due to the nickel / tin plating process, the solder cream can be buried on the upper surface of the base (4) was configured by separating the base (4) with respect to the fixing part (2) through the connecting portion (5).
그러나 이는 연결부(5)와 베이스(4)의 이격공간으로 전자파가 노출되는 문제점을 야기시켰다.However, this causes a problem that the electromagnetic wave is exposed to the spaced space between the connecting portion 5 and the base 4.
또한 종래의 전자파 차단용 쉴드캔 고정용 클립(1)은 클램핑부(3)로 상기 쉴드캔을 고정시킬 시 쉴드캔의 삽입단부가 상기 베이스(4)의 상부면으로 안착되는 바, 이 또한 베이스(4)와 쉴드캔의 삽입단부 사이에 형성되는 미세간극으로 전자파가 노출되며, 또한 고정부(2)의 상부로 매우 큰 공간이 형성되어 전자파의 차폐효과가 매우 떨어지는 문제점이 있었다.In addition, the conventional shield can fixing clip (1) for shielding electromagnetic waves when the shield can is fixed to the upper surface of the base (4) when the shield can is fixed by the clamping portion (3), the base Electromagnetic waves are exposed to the micro-gaps formed between the insertion portion of the shield can and the shield can, and a very large space is formed in the upper portion of the fixing portion 2, so that the shielding effect of the electromagnetic waves is very low.
아울러 종래의 전자파 차단용 쉴드캔 고정용 클립(1)은 연결부(5)로 인해 쉴드캔의 전체 높이가 높아지게 때문에 안정성이 매우 떨어지는 문제점이 있었다.In addition, the conventional shield can fixing clip 1 for electromagnetic wave blocking has a problem that the stability is very poor because the overall height of the shield can is increased due to the connecting portion (5).
본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로, 본 발명의 제 1목적은, 베이스의 상부면에 쉴드캔의 삽입단부가 끼움결합될 수 있는 홈부를 마련하여 전자파 차폐효과를 극대화할 수 있는 구조의 전자파 차단용 쉴드캔 고정용 클립을 제공하는데 있다.The present invention has been made in view of the above problems, the first object of the present invention, by providing a groove that can be inserted into the insertion end of the shield can on the upper surface of the base to maximize the electromagnetic shielding effect The present invention provides a clip for fixing a shield can for blocking electromagnetic waves of a structure.
또한 본 발명의 제 2목적은, 인쇄회로기판과 접한 상태로 부착되는 베이스부의 저면에 니켈/주석 도금층을 형성하여, 솔더크림이 베이스부의 상부면으로 침범하지 못하게 함으로써, 쉴드캔과 클립의 접촉저항이 최소화됨에 따라 차폐효과를 높이고, 또한 베이스를 저면을 평편하게 구성하여 인쇄회로기판과의 밀착면적을 증대시켜 전자파의 차폐효과를 극대화하고, 더불어 쉴드캔의 전체 높이를 낮게 할 수 있어 보다 안정적으로 쉴드캔을 고정할 수 있는 구조의 전자파 차단용 쉴드캔 고정용 클립을 제공하는데 있다.In addition, the second object of the present invention, by forming a nickel / tin plating layer on the bottom surface of the base portion in contact with the printed circuit board to prevent the solder cream from invading the upper surface of the base portion, the contact resistance between the shield can and the clip As this is minimized, the shielding effect is increased, and the base is flattened to increase the adhesion area with the printed circuit board to maximize the shielding effect of the electromagnetic waves, and lower the overall height of the shield can. The present invention provides a shield can fixing clip for shielding electromagnetic waves having a structure capable of fixing the shield can.
상기한 바와 같은 목적을 달성하기 위한 본 발명의 특징에 따르면, 제 1발명은, 인쇄회로기판에 실장된 전자부품을 덮도록 마련되는 쉴드캔을 상기 인쇄회로기판에 고정시키기 위한 전자파 차단용 쉴드캔 고정용 클립에 있어서, 상기 인쇄회로기판에 접한 상태로 부착되는 베이스부;와, 상기 쉴드캔의 측벽을 집게형태로 집을 수 있도록 상기 베이스의 양측에 상호 마주보도록 상향으로 연장되어 절곡되는 한 쌍의 탄성편부; 및 상기 베이스부의 상부면 중앙에 길이방향으로 형성되어 쉴드캔의 삽입단부가 끼움결합되는 홈부;를 포함하는 것을 특징으로 한다.According to a feature of the present invention for achieving the above object, the first invention is a shield can for shielding electromagnetic waves for fixing the shield can is provided to cover the electronic component mounted on the printed circuit board to the printed circuit board. A fixing clip comprising: a base portion attached to a state of being in contact with the printed circuit board; and a pair of upwardly extending and bent to face each other of the base so as to pick up the sidewall of the shield can in a tongs shape Elastic piece; And a groove formed at a center in the center of the upper surface of the base to be inserted into an insertion end of the shield can.
제 2발명은, 제 1발명에서, 상기 베이스부의 저면에는 니켈/주석 도금된 도금층을 더 포함하는 것이 바람직하다.The second invention, in the first invention, preferably further comprises a nickel / tin plated plating layer on the bottom of the base portion.
제 3발명은, 제 1발명에서, 상기 각 탄성편부는 베이스에 수직 상향으로 90°절곡된 수직부와, 상기 수직부가 내측으로 만곡되어 쉴드캔의 측벽을 압박하는 압박부와, 상기 압박부를 기점으로 외측으로 벌어지는 가이드부를 포함하여 구성되되, 상기 가이드부는 벌어짐의 각도θ가 75°내지 90°인 것이 바람직하다.According to a third aspect of the present invention, in the first invention, each elastic piece has a vertical portion that is bent upwardly 90 degrees to the base, a pressing portion for bending the vertical portion inward to press the sidewall of the shield can, and starting from the pressing portion. It is configured to include a guide portion that is opened to the outside, the guide portion is preferably an angle θ of the flare is 75 ° to 90 °.
제 4발명은, 제 1발명에서, 상기 홈부(11)는 베이스부(10)의 중앙부위를 하향 절곡시켜 구성되는 것이 바람직하다.In the fourth invention, in the first invention, the groove portion 11 is preferably configured by bending the central portion of the base portion 10 downwardly.
본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립은, 베이스의 상부면에 쉴드캔의 삽입단부가 끼움결합될 수 있는 홈부를 마련하여 전자파 차폐효과를 극대화할 수 있는 효과가 있다.The shield can fixing clip for shielding electromagnetic waves according to the present invention has an effect of maximizing an electromagnetic shielding effect by providing a groove portion into which an insertion end of the shield can can be fitted on an upper surface of the base.
또한 인쇄회로기판과 접한 상태로 부착되는 베이스부의 저면에 니켈/주석 도금층을 형성하여, 솔더크림이 베이스부의 상부면으로 침범하지 못하게 함으로써, 쉴드캔과 클립의 접촉저항이 최소화됨에 따라 차폐효과를 높이고, 또한 베이스를 저면을 평편하게 구성하여 인쇄회로기판과의 밀착면적을 증대시켜 전자파의 차폐효과를 극대화하고, 더불어 쉴드캔의 전체 높이를 낮게 할 수 있어 보다 안정적으로 쉴드캔을 고정할 수 있는 효과가 있다.In addition, by forming a nickel / tin plating layer on the bottom of the base portion in contact with the printed circuit board to prevent the solder cream from invading the top surface of the base portion, the shielding effect and the clip contact resistance is minimized to increase the shielding effect In addition, the base has a flat bottom surface to increase the adhesion area with the printed circuit board to maximize the shielding effect of electromagnetic waves, and to lower the overall height of the shield can, so that the shield can can be more stably fixed. There is.
도 1은 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립의 사용 상태도,1 is a state of use of the shield can fixing clip for electromagnetic wave blocking according to the present invention,
도 2는 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립의 사시도,2 is a perspective view of a shield can fixing clip for electromagnetic wave blocking according to the present invention;
도 3은 도 2의 저면사시도,3 is a bottom perspective view of FIG.
도 4는 전자파 차단용 쉴드캔 고정용 클립에 쉴드캔이 결합된 모습을 도시한 단면도,4 is a cross-sectional view showing the shield can is coupled to the shield can fixing clip for electromagnetic wave blocking,
도 5는 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립에서 다른 실시예의 홈부를 나타내는 저면사시도,5 is a bottom perspective view showing a groove part of another embodiment in a shield can fixing clip for shielding electromagnetic waves according to the present invention;
도 6은 종래의 전자파 차단용 쉴드캔 고정용 클립의 사시도이다.6 is a perspective view of a conventional shield can fixing clip for blocking electromagnetic waves.
이하에서는 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립에 관하여 첨부되어진 도면과 함께 더불어 상세히 설명하기로 한다.Hereinafter will be described in detail with the accompanying drawings with respect to the shield can fixing clip for electromagnetic shielding according to the present invention.
도 1은 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립의 사용 상태도이고, 도 2는 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립의 사시도이고, 도 3은 도 2의 저면사시도이고, 도 4는 전자파 차단용 쉴드캔 고정용 클립에 쉴드캔이 결합된 모습을 도시한 단면도이고, 도 5는 본 발명에 따른 전자파 차단용 쉴드캔 고정용 클립에서 다른 실시예의 홈부를 나타내는 저면사시도이다.1 is a state of use of the shield can fixing clip for electromagnetic wave blocking according to the present invention, Figure 2 is a perspective view of the shield can fixing clip for electromagnetic shielding according to the present invention, Figure 3 is a bottom perspective view of Figure 2, Figure 4 is a cross-sectional view illustrating a shield can coupled to a shield can fixing clip for shielding electromagnetic waves, and FIG. 5 is a bottom perspective view showing a groove of another embodiment of the shield can fixing clip for shielding electromagnetic waves according to the present invention.
도 1에 도시된 바와 같이, 본 발명은 인쇄회로기판(40)에 실장된 반도체와 같은 전자부품(60)을 덮도록 마련되는 쉴드캔(50)을 상기 인쇄회로기판(40)에 고정시키기 위한 전자파 차단용 쉴드캔 고정용 클립(30)에 관한 것으로, 인쇄회로기판(40)과 접한 상태로 부착되는 베이스부(10)의 저면을 평편하게 구성하여 밀착면적을 증대시키고, 더불어 베이스부(10)의 상부면에 쉴드캔(50)의 삽입단부가 끼움결합될 수 있는 홈부(11)를 마련하여 전자파 차폐효과를 극대화할 수 있는 구조의 전자파 차단용 쉴드캔 고정용 클립(30)에 관한 것이다.As shown in FIG. 1, the present invention provides a method for fixing a shield can 50 to an electronic component 60 such as a semiconductor mounted on a printed circuit board 40 to the printed circuit board 40. Electromagnetic shielding shield can fixing clip 30, the bottom surface of the base portion 10 attached in contact with the printed circuit board 40 is formed flat to increase the adhesion area, and the base portion 10 It relates to a shield can fixing clip 30 for the electromagnetic shielding structure of the structure that can maximize the electromagnetic shielding effect by providing a groove portion 11 that can be inserted into the insertion end of the shield can 50 on the upper surface of the) .
이러한 전자파 차단용 쉴드캔 고정용 클립(30)은 도 2 내지 도 4에 도시된 바와 같이, 크게 3부분으로 이루어지는데, 이는 베이스부(10)와, 탄성편부(20)와, 홈부(11)로 구성된다.As shown in FIGS. 2 to 4, the shield can fixing clip 30 for shielding electromagnetic waves is composed of three parts, which is a base part 10, an elastic piece part 20, and a groove part 11. It consists of.
여기서 상기 베이스부(10)는 전자파 차단용 쉴드캔 고정용 클립(30)을 부착고정하기 위해 인쇄회로기판(40)에 표면에 스크린 처리되는 솔더크림(납땜)이 베이스부(10)의 상부면으로 넘지 않도록 하기 위해 저면에 니켈/주석 도금된 도금층(12)을 더 포함하여 구성된다.Here, the base portion 10 has a solder cream (soldering) screened on the surface of the printed circuit board 40 to fix the shield can fixing clip 30 for shielding electromagnetic waves, and the upper surface of the base portion 10. It is further configured to include a nickel / tin plated plating layer 12 on the bottom so as not to fall over.
여기서 도금층(12)은 스틸 재질로 이루어지는 전자파 차단용 쉴드캔 고정용 클립(30)에 솔더크림이 잘 부착되도록 하는 것으로, 도금되지 않은 베이스부(10)의 상부면으로는 솔더크림(41)이 묻지 않게 하기 위함이다.Here, the plating layer 12 is such that the solder cream is well attached to the shield can fixing clip 30 for shielding electromagnetic waves made of steel, the solder cream 41 is formed on the upper surface of the unplated base portion 10. This is to keep it from asking.
따라서 상기 베이스부(10)는 저면을 제외한 상부면으로 솔더크림(41)이 묻지 않기 때문에 베이스부(10)의 저면 전체를 편평하게 구성할 수 있는 구조가 마련된다.Therefore, since the solder cream 41 does not adhere to the upper surface except the bottom, the base portion 10 is provided with a structure capable of flatly forming the entire bottom surface of the base portion 10.
즉, 상기 베이스부(10)는 저면 전체를 인쇄회로기판(40)에 접한 상태로 부착구성할 수 있어 상기 인쇄회로기판(40)과 접촉면적을 증대시키고, 쉴드캔(50)의 전체 높이를 낮게 하여 전자파의 차단 효과를 극대화할 수 있다.That is, the base portion 10 can be attached to the entire bottom surface in contact with the printed circuit board 40 to increase the contact area with the printed circuit board 40, and to increase the overall height of the shield can 50 It can be lowered to maximize the blocking effect of electromagnetic waves.
또한 본 발명의 도금층(12)은 베이스부(10)의 저면에만 형성되어 있어 비도금된 탄성편부와 쉴드캔과의 접촉저항이 최소화됨으로써, 전자파의 차단효과를 극대화할 수 있는 구조이다.In addition, the plating layer 12 of the present invention is formed only on the bottom surface of the base portion 10, thereby minimizing the contact resistance between the unplated elastic piece and the shield can, thereby maximizing the blocking effect of electromagnetic waves.
이하에서는 [표 1]을 참조하여 본 발명의 비도금된 탄성편부와 쉴드캔과의 접촉저항과, 종래의 도금된 탄성편부와 쉴드캔과의 접촉저항을 3회 실험하여 비교하였다.Hereinafter, referring to Table 1, the contact resistance between the non-plated elastic piece and the shield can of the present invention and the contact resistance between the conventional plated elastic piece and the shield can were compared three times.
표 1
본발명의 비도금 탄성편부와 쉴드캔과의 접촉저항 종래의 도금된 탄성편부와 쉴드캔과의 접촉저항
1회 0.036Ω 0.5Ω
2회 0.036Ω 0.4Ω
3회 0.038Ω 0.7Ω
Table 1
Contact resistance between the unplated elastic piece of the present invention and the shield can Contact resistance between conventional plated elastic piece and shield can
1 time 0.036Ω 0.5 Ω
Episode
2 0.036Ω 0.4 Ω
3rd time 0.038Ω 0.7Ω
[표 1]에서 접촉저항을 3회 실험한 바와 같이, 본 발명의 비도금 탄성편부와 쉴드캔과의 접촉저항이 종래의 도금된 탄성편부와 쉴드캔과의 접촉저항 보다 10배 이상 낮게 나타난 것을 확인할 수 있다.As shown in Table 1, the contact resistance was tested three times, and the contact resistance between the non-plated elastic piece and the shield can of the present invention was 10 times lower than that of the conventional plated elastic piece and the shield can. You can check it.
이러한 접촉저항이 낮을수록 전자파의 차폐효과가 커짐으로써 본 발명의 전자파 차단효과가 매우 큰 것을 알 수 있었다.As the contact resistance is lower, the electromagnetic wave shielding effect of the present invention is very large as the shielding effect of the electromagnetic wave is increased.
한편 상기 탄성편부(20)는 상기 쉴드캔(50)의 측벽을 집게형태로 집을 수 있도록 상기 베이스부(10)의 양측에 상호 마주보도록 상향으로 연장되어 절곡되는 구조이다. 이러한 상기 탄성편부(20)는 보다 안정적으로 쉴드캔(50)의 측면을 집을 수 있도록 상기 베이스부(10)의 길이방향을 따라 한쌍이 형성된다.On the other hand, the elastic piece portion 20 is a structure that is bent upwardly extended to face each other on both sides of the base portion 10 so as to pick up the side wall of the shield can 50 in the form of tongs. The elastic piece portion 20 is formed in a pair along the longitudinal direction of the base portion 10 to more stably pick up the side surface of the shield can (50).
여기서 상기 각 탄성편부(20)는 베이스부(10)에 수직 상향으로 90°절곡된 수직부(21)와, 상기 수직부(21)가 내측으로 만곡되어 쉴드캔(50)의 측면을 압박하는 압박부(22)와, 상기 압박부(22)를 기점으로 외측으로 벌어지는 가이드부(23)로 구성된다.Here, each of the elastic piece portion 20 is a vertical portion 21 is bent 90 degrees vertically upwards to the base portion 10, and the vertical portion 21 is bent inward to press the side of the shield can 50 Compression part 22 and the guide part 23 which spreads outward from the said compression part 22 are comprised.
이러한 구성은 가이드부(23)를 통해 쉴트캔(50)의 진입을 용이하게 하고, 압박부(22)를 통해 쉴드캔(50)의 측벽을 압박하여 쉴드캔(50)이 탄성편부(20)에서 이탈되는 것을 방지한다.Such a configuration facilitates the entry of the shield can 50 through the guide portion 23, and presses the sidewall of the shield can 50 through the pressing portion 22 so that the shield can 50 is the elastic piece portion 20. To prevent deviations from
여기서 상기 가이드부(23)는 벌어짐의 각도(θ)가 75°내지 90°인 것이 바람직하다. 이는 상기 가이드부(23)의 각도가 90°이상일 경우에는 쉴드캔(50)의 삽입시 탄성편부(20)에 힘이 가해져 탄성편부(20)의 변형이 일어날 수 있기 때문에 바람직하지 않고, 75°이하일 경우에는, 쉴드캔(50)의 삽입이 어렵기 때문에 바람직하지 않다.In this case, the guide portion 23 preferably has an angle θ of 75 ° to 90 °. This is not preferable because the angle of the guide portion 23 is greater than 90 ° because the force is applied to the elastic piece 20 when the shield can 50 is inserted, and deformation of the elastic piece 20 may occur. In the case of the following, since insertion of the shield can 50 is difficult, it is not preferable.
한편 상기 홈부(11)는 베이스부(10)의 상부면 중앙에 길이방향으로 형성되어 쉴드캔(50)의 삽입단부가 끼움결합되는 구조이다.On the other hand, the groove 11 is formed in the longitudinal direction in the center of the upper surface of the base portion 10 is a structure that the insertion end of the shield can 50 is fitted.
이러한 구조는 쉴드캔(50)의 삽입단부를 홈부(11)에 삽입시켜 쉴드캔(50)의 외부와 완전히 차폐시킴으로써, 전자파의 차단을 가일층 증대시킬 수 있는 구조이다. 이는 쉴드캔(50)의 삽입단부가 홈부(11)에 면접촉되므로 가능하다.This structure is a structure that can further block the electromagnetic wave by inserting the insertion end of the shield can 50 into the groove 11 to completely shield the outside of the shield can 50. This is possible because the insertion end of the shield can 50 is in surface contact with the groove 11.
아울러 상기 도 5에 도시된 바와 같이, 상기 홈부(11)는 베이스부(10)의 중앙부위를 하향 절곡시켜 구성될 수 있음은 물론이다.In addition, as shown in FIG. 5, the groove 11 may be configured by bending downward the central portion of the base 10.
이러한 구조는 홈부(11)에 탄력성을 부여함으로써, 쉴드캔(50)과의 결합을 더욱더 공고히 할 수 있는 구조를 마련한다.This structure provides a structure capable of further solidifying the shield can 50 by providing elasticity to the groove 11.
본 발명의 권리는 위에서 설명된 실시예에 한정되지 않고 청구범위에 기재된 바에 의해 정의되며, 본 발명의 분야에서 통상의 지식을 가진 자가 청구범위에 기재된 권리범위 내에서 다양한 변형과 개작을 할 수 있다는 것은 자명하다.The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

Claims (4)

  1. 인쇄회로기판에 실장된 전자부품을 덮도록 마련되는 쉴드캔을 상기 인쇄회로기판에 고정시키기 위한 전자파 차단용 쉴드캔 고정용 클립에 있어서,In the electromagnetic shield shield can fixing clip for fixing the shield can is provided to cover the electronic components mounted on the printed circuit board to the printed circuit board,
    상기 인쇄회로기판(40)에 접한 상태로 부착되는 베이스부(10);A base part 10 attached in contact with the printed circuit board 40;
    상기 쉴드캔(50)의 측벽을 집게형태로 집을 수 있도록 상기 베이스부(10)의 양측에 상호 마주보도록 상향으로 연장되어 절곡되는 한 쌍의 탄성편부(20); 및A pair of elastic piece portions 20 which are bent upwardly and bent to face each other on both sides of the base portion 10 so as to pick up the sidewall of the shield can 50 in a tongs shape; And
    상기 베이스부(10)의 상부면 중앙에 길이방향으로 형성되어 쉴드캔(50)의 삽입단부가 끼움결합되는 홈부(11);를 포함하는 것을 특징으로 하는 전자파 차단용 쉴드캔 고정용 클립.And a groove portion (11) formed in the center of the upper surface of the base portion (10) in a lengthwise direction and into which the insertion end of the shield can (50) is fitted.
  2. 제 1항에 있어서,The method of claim 1,
    상기 베이스부(10)의 저면에는 니켈/주석 도금된 도금층(12)을 더 포함하는 것을 특징으로 하는 전자파 차단용 쉴드캔 고정용 클립.The bottom of the base portion 10, the shielding clip for electromagnetic shield shield can further comprises a nickel / tin plated plating layer (12).
  3. 제 1항에 있어서,The method of claim 1,
    상기 각 탄성편부(20)는 베이스에 수직 상향으로 90°절곡된 수직부(21)와, 상기 수직부(21)가 내측으로 만곡되어 쉴드캔(50)의 측벽을 압박하는 압박부(22)와, 상기 압박부(22)를 기점으로 외측으로 벌어지는 가이드부(23)를 포함하여 구성되되,Each of the elastic pieces 20 has a vertical portion 21 bent vertically upward 90 degrees to the base, and the pressing portion 22 for bending the vertical portion 21 inward to press the sidewall of the shield can 50. And, comprising a guide portion 23 to be opened outward from the pressing portion 22,
    상기 가이드부(23)는 벌어짐의 각도(θ)가 75°내지 90°인 것을 특징으로 하는 전자파 차단용 쉴드캔 고정용 클립.The guide portion 23 is a shield can fixing clip for electromagnetic shielding, characterized in that the angle of the gap (θ) is 75 ° to 90 °.
  4. 제 1항에 있어서,The method of claim 1,
    상기 홈부(11)는 베이스부(10)의 중앙부위를 하향 절곡시켜 구성되는 것을 특징으로 하는 전자파 차단용 쉴드캔 고정용 클립.The groove 11 is a shield can fixing clip for electromagnetic shielding, characterized in that configured to bend the center portion of the base portion 10 downward downward.
PCT/KR2011/006999 2010-10-06 2011-09-22 Shield can-fixing clip for blocking electromagnetic waves WO2012046965A2 (en)

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KR101169955B1 (en) 2012-09-19
TW201230941A (en) 2012-07-16

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