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KR100596302B1 - Keypad of mobile communication terminal - Google Patents

Keypad of mobile communication terminal Download PDF

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Publication number
KR100596302B1
KR100596302B1 KR1020040002621A KR20040002621A KR100596302B1 KR 100596302 B1 KR100596302 B1 KR 100596302B1 KR 1020040002621 A KR1020040002621 A KR 1020040002621A KR 20040002621 A KR20040002621 A KR 20040002621A KR 100596302 B1 KR100596302 B1 KR 100596302B1
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South Korea
Prior art keywords
keypad
mobile communication
pad
communication terminal
pcb
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Korean (ko)
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KR20050074740A (en
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박완근
손성일
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주식회사 팬택앤큐리텔
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0073—Means for releasably holding a ball in position; Balls constrained to move around a fixed point, e.g. by tethering
    • A63B69/0075—Means for releasably holding a ball in position prior to kicking, striking or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A63B69/3661—Mats for golf practice, e.g. mats having a simulated turf, a practice tee or a green area

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)

Abstract

본 발명은 이동통신단말기의 키패드에 있어서, 간단한 구성을 갖고 있어 조립이 편리하며, 단가를 낮춰 이동통신단말기의 제작비용을 절감할 수 있는 이동통신단말기의 키패드를 제공하는 데 그 목적이 있다.An object of the present invention is to provide a keypad of a mobile communication terminal, which has a simple configuration, which is easy to assemble, and which reduces the manufacturing cost of the mobile communication terminal.

상기와 같은 목적을 달성하기 위한 본 발명은 일면에 다수 개의 키단자(141)가 형성된 인쇄회로기판(PCB)(140)을 구비한 키패드에 있어서, 인쇄회로기판(140)의 키단자(141)와 대응하는 다수 개의 오목부(123)가 일면에 형성되고 타면에는 오목부(123)에 대응하여 다수 개의 버튼(121)이 형성된 패드(120)와, 오목부(123)의 안쪽에 도포된 전도체(130)를 포함하여 구성된 것을 기술적 특징으로 한다.In order to achieve the above object, the present invention provides a keypad including a printed circuit board (PCB) 140 having a plurality of key terminals 141 formed on one surface thereof, and a key terminal 141 of the printed circuit board 140. And a plurality of recesses 123 formed on one surface thereof and a pad 120 formed with a plurality of buttons 121 corresponding to the recessed portions 123 on the other surface thereof, and a conductor applied inside the recessed portion 123. It is characterized by a technical configuration including the 130.

본 발명의 이동통신단말기의 키패드는 패드와 PCB(printed circuit board)로 구성된다. 종래의 키패드는 패드, 돔스위치부, 메탈 돔, PCB로 구성되어 두께가 두꺼웠으나, 본 발명에서는 패드와 PCB의 두께로 구성되어 키패드의 두께를 얇게 구성할 수 있어 이동통신단말기를 슬림화할 수 있다.The keypad of the mobile communication terminal of the present invention is composed of a pad and a printed circuit board (PCB). Conventional keypad is composed of a pad, a dome switch unit, a metal dome, PCB, the thickness was thick, but in the present invention is composed of a thickness of the pad and the PCB can be configured to thin the thickness of the keypad can slim the mobile communication terminal. have.

이동통신단말기, 키패드, 패드, 돔스위치부, 메탈 돔, 전도체, 키단자, 인쇄회로기판Mobile communication terminal, keypad, pad, dome switch unit, metal dome, conductor, key terminal, printed circuit board

Description

이동통신단말기의 키패드{Key Pad of Mobile Communication Terminal}Keypad of Mobile Communication Terminal

도 1은 종래의 기술에 따른 이동통신단말기의 키패드를 나타낸 분해사시도이고,1 is an exploded perspective view showing a keypad of a mobile communication terminal according to the prior art,

도 2는 도 1에 도시된 키패드의 단면도이고,2 is a cross-sectional view of the keypad shown in FIG.

도 3은 본 발명의 한 실시예에 따른 이동통신단말기의 키패드를 나타낸 분해사시도이고,3 is an exploded perspective view showing a keypad of a mobile communication terminal according to an embodiment of the present invention,

도 4는 도 3에 도시된 키패드의 단면도이며,4 is a cross-sectional view of the keypad shown in FIG.

도 5는 도 3에 도시된 패드의 부분단면도이다.5 is a partial cross-sectional view of the pad shown in FIG. 3.

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

10, 100 : 이동통신단말기 11, 111 : 상부 케이스10, 100: mobile communication terminal 11, 111: upper case

12, 112 : 하부 케이스 13, 113 : 관통공12, 112: lower case 13, 113: through hole

20, 120 : 패드 21, 121 : 버튼20, 120: Pad 21, 121: Button

30 : 돔스위치부 31 : 메탈 돔30: dome switch part 31: metal dome

40, 140 : PCB 41, 141 : 키단자40, 140: PCB 41, 141: key terminal

123 : 오목부 130 : 전도체123: recess 130: conductor

본 발명은 이동통신단말기의 키패드에 관한 것으로, 특히, 간단한 구성을 갖고 있어 조립이 편리하며, 단가를 낮춰 이동통신단말기의 제작비용을 절감하기 위한 것이다.The present invention relates to a keypad of a mobile communication terminal, and in particular, has a simple configuration to facilitate the assembly, and to reduce the unit cost to reduce the manufacturing cost of the mobile communication terminal.

이동통신단말기에는 사용자가 정보를 입력하도록 키패드가 설치된다.The mobile terminal is equipped with a keypad for the user to input information.

도면에서, 도 1은 종래의 기술에 따른 이동통신단말기의 키패드를 나타낸 분해사시도이며, 도 2는 도 1에 도시된 키패드의 단면도이다.1 is an exploded perspective view showing a keypad of a mobile communication terminal according to the prior art, and FIG. 2 is a cross-sectional view of the keypad shown in FIG.

도 1에 도시된 바와 같이, 이동통신단말기(10)의 상,하부 케이스(11, 12)의 사이에는 PCB(40)가 위치한다. 이런 PCB(40)의 상면에는 키단자(41)가 패드(20)의 버튼(21) 수만큼 설치된다. 그리고 이런 PCB(40)의 상면에는 돔스위치부(30)가 안착되는데, 돔스위치부(30)의 저면에는 PCB(40)의 키단자(41)와 대응하는 지점에 돔형태의 메탈 돔(31)이 부착되며, 메탈 돔(31)이 키단자(41)와 대응하게 위치하도록 돔스위치부(30)는 PCB(40)의 상면을 덮고 있다.As shown in FIG. 1, the PCB 40 is positioned between the upper and lower cases 11 and 12 of the mobile communication terminal 10. Key terminals 41 are provided on the upper surface of the PCB 40 by the number of buttons 21 of the pad 20. And the dome switch unit 30 is seated on the upper surface of the PCB 40, the bottom surface of the dome switch unit 30 is a dome-shaped metal dome 31 at a point corresponding to the key terminal 41 of the PCB 40 The dome switch unit 30 covers the upper surface of the PCB 40 so that the metal dome 31 is positioned to correspond to the key terminal 41.

그리고 돔스위치부(30)의 상면에는 돔스위치부(30)의 메탈 돔(31)과 대응하는 지점에 패드(20)가 설치되는데, 이런 패드(20)는 유연한 합성수지재로 구성된 것이 일반적이다.And the upper surface of the dome switch unit 30, the pad 20 is provided at a point corresponding to the metal dome 31 of the dome switch unit 30, this pad 20 is generally composed of a flexible synthetic resin material.

이와 같이 배치된 패드(20), 메탈 돔(31)이 부착된 돔스위치부(30), PCB(40)가 적층된 상태로 이동통신단말기의 상,하부 케이스(11, 12)의 안에 배치되며 상부 케이스(11)에 형성된 관통공(13)을 통해 패드(20)의 각 버튼(21)들이 상부로 돌출 된다.The pad 20 disposed as described above, the dome switch unit 30 to which the metal dome 31 is attached, and the PCB 40 are stacked in the upper and lower cases 11 and 12 of the mobile communication terminal. Each button 21 of the pad 20 protrudes upward through the through hole 13 formed in the upper case 11.

따라서, 사용자가 패드(20) 중에 어느 한 버튼(21)을 누르면, 버튼(21)에 의해 메탈 돔(31)의 중앙부가 함몰되면서 하부에 있는 키단자(41)와 접속되고, 키단자(41)가 접속되면서 사용자가 누른 버튼(21)에 해당하는 전기적신호가 입력된다. 그리고 사용자가 가하던 힘을 제거하면 메탈 돔(31)이 탄성복원되면서 키단자(41)에서 탈락된다.Therefore, when the user presses any button 21 of the pad 20, the center portion of the metal dome 31 is recessed by the button 21 and connected to the key terminal 41 at the lower portion thereof. ) Is connected and an electrical signal corresponding to the button 21 pressed by the user is input. And if the user removes the force applied to the metal dome 31 is removed from the key terminal 41 while elastically restored.

이와 같은 키패드 구조에 있어서, 약 20~25개의 메탈 돔(31)이 돔스위치부(30)의 패드 저면에 부착되어지는데, 그 부착위치가 PCB(40)의 키단자(41)와 일치하여야 하기 때문에 메탈 돔(31)의 부착에 어려움이 있다. 또한 메탈 돔(31)은 금속전도체로서, 키패드에 부착된 상태에서 장시간 사용하다보면 메탈 돔(31)이 돔스위치부(30)의 패드에서 떨어지는 경우가 발생한다.In the keypad structure as described above, about 20 to 25 metal domes 31 are attached to the bottom surface of the pad of the dome switch unit 30, and the attachment positions thereof must match the key terminals 41 of the PCB 40. Therefore, there is a difficulty in attaching the metal dome 31. In addition, the metal dome 31 is a metal conductor, and when the metal dome 31 is attached to the keypad for a long time, the metal dome 31 may fall off the pad of the dome switch unit 30.

또한, 키패드는 패드(20), 돔스위치부(30), 메탈 돔(31), PCB(40)가 적층된 두께로서, 이와 같이 두꺼운 키패드는 이동통신단말기의 슬림화 역행한다는 문제점이 있다.In addition, the keypad has a thickness in which the pad 20, the dome switch unit 30, the metal dome 31, and the PCB 40 are stacked, and thus, the thick keypad has a problem in that the mobile communication terminal becomes slimmer.

본 발명은 앞서 설명한 바와 같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로서, 구성요소를 간단히 하여 키패드의 두께를 얇게 함으로써, 이동통신단말기의 두께를 슬림화할 수 있으며, 또한 구성요소를 줄여 단가는 낮출 수 있는 이동통신단말기의 키패드를 제공하는 데 그 목적이 있다.The present invention has been invented to solve the problems of the prior art as described above, by reducing the thickness of the keypad by simplifying the components, it is possible to slim down the thickness of the mobile communication terminal, and also to reduce the cost by reducing the components An object of the present invention is to provide a keypad of a mobile communication terminal.

상기와 같은 목적을 달성하기 위한 본 발명은 다수 개의 키단자가 형성된 인쇄회로기판을 구비한 키패드에 있어서, 일면에는 상기 인쇄회로기판의 키단자와 대응하여 다수 개의 오목부가 형성되고 타면에는 상기 오목부에 대응하여 다수 개의 버튼이 형성된 패드와, 상기 오목부의 안쪽에 도포된 전도체를 포함하여 구성된 것을 기술적 특징으로 한다.The present invention for achieving the above object is a keypad having a printed circuit board having a plurality of key terminals, a plurality of recesses are formed on one surface corresponding to the key terminal of the printed circuit board, the other side the recess In response to the technical features, comprising a pad formed with a plurality of buttons, and a conductor applied to the inside of the recess.

또한, 본 발명의 상기 패드는 유연한 합성수지재이다.In addition, the pad of the present invention is a flexible synthetic resin material.

아래에서, 본 발명에 따른 이동통신단말기의 키패드의 양호한 실시예를 첨부한 도면을 참조로 하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of a keypad of a mobile communication terminal according to the present invention will be described in detail.

도면에서, 도 3은 본 발명의 한 실시예에 따른 이동통신단말기의 키패드를 나타낸 분해사시도이고, 도 4는 도 3에 도시된 키패드의 단면도이며, 도 5는 도 3에 도시된 패드의 부분단면도이다.3 is an exploded perspective view showing a keypad of a mobile communication terminal according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of the keypad shown in FIG. 3, and FIG. 5 is a partial cross-sectional view of the pad shown in FIG. 3. to be.

도 3 및 도 4에 도시된 바와 같이, 이동통신단말기(100)의 키패드는 상,하부 케이스(111, 112)의 사이에 PCB(140)가 위치하고, PCB(140)의 평면에 패드(120)가 안착된 상태로 상,하부 케이스(111, 112)의 내부에 수용된다.3 and 4, the keypad of the mobile communication terminal 100 is located between the upper and lower cases 111 and 112, the PCB 140, the pad 120 on the plane of the PCB 140 Is accommodated in the upper and lower cases 111 and 112 in a seated state.

이런 패드(120)는 평면에 다수 개의 버튼(121)이 형성되고, 저면에는 PCB(140)의 상면에 형성된 키단자(141)의 대응하는 위치에 오목부(123)가 형성된다. 그리고 이런 오목부(123)의 안쪽면에는 전도체(130)가 도포된다.The pad 120 has a plurality of buttons 121 formed on a plane, and a recess 123 is formed at a corresponding position of the key terminal 141 formed on the upper surface of the PCB 140 on the bottom surface. The conductor 130 is coated on the inner surface of the recess 123.

보다 구체적으로 설명하자면, 하부 케이스(112)의 안쪽에는 다수 개의 키단자(141)가 형성된 PCB(140)가 피스 등에 의해 체결 고정된다. 그리고 이런 PCB(140)의 평면에 패드(120)가 안착되어 위치하는데, 패드(120)의 저면에 형성된 다수 개의 오목부(123)는 PCB(140)에 형성된 키단자(141)와 대응하여 PCB(140)의 평면에 위치한다. 이런 오목부(123)의 안쪽면에는 전도체(130)가 도포되며, 패드(120)의 재질은 유연한 합성수지재이다.More specifically, the PCB 140 having a plurality of key terminals 141 formed inside the lower case 112 is fastened and fixed by a piece or the like. In addition, the pad 120 is seated on the plane of the PCB 140, and the plurality of recesses 123 formed on the bottom surface of the pad 120 correspond to the key terminals 141 formed on the PCB 140. It is located in the plane of 140. Conductor 130 is applied to the inner surface of the recess 123, the material of the pad 120 is a flexible synthetic resin material.

한편, 이런 패드(120)의 평면에는 저면에 형성된 오목부(123)와 대응하여 다수 개의 버튼(121)들이 돌출되어 형성된다. 이런 버튼(121)은 상부 케이스(111)에 형성된 관통공(113)을 관통해 상부 케이스(111)의 상부로 돌출되거나 또는 상부 케이스(111)의 같은 레벨에 위치한다.Meanwhile, a plurality of buttons 121 protrude from the plane of the pad 120 to correspond to the recess 123 formed on the bottom thereof. The button 121 penetrates the through hole 113 formed in the upper case 111 and protrudes to the upper portion of the upper case 111 or is positioned at the same level of the upper case 111.

이와 같이 상부 케이스(111)와 하부 케이스(112)는 패드(120)와 PCB(140)를 수용한 상태로 상호 체결 고정된다.As such, the upper case 111 and the lower case 112 are fastened to each other in a state in which the pad 120 and the PCB 140 are accommodated.

아래에서는 이와 같이 구성된 이동통신단말기의 키패드의 작동관계에 대해 설명한다.Hereinafter, the operation relationship of the keypad of the mobile communication terminal configured as described above will be described.

사용자가 패드(120)의 어느 한 버튼(121)을 누르면, 유연한 합성수지재인 버튼(121)은 변형되는데, 가압된 버튼(121)과 대응하는 하부의 오목부(123)의 중앙이 하부방향으로 변형되면서 그 하부에 대응하는 PCB(140)의 키단자(141)에 전도체(130)가 접속된다.When the user presses any button 121 of the pad 120, the button 121, which is a flexible synthetic resin, is deformed, and the center of the recessed portion 123 of the lower portion corresponding to the pressed button 121 is deformed downward. The conductor 130 is connected to the key terminal 141 of the PCB 140 corresponding to the lower portion thereof.

이와 같이 전도체(130)가 키단자(141)에 접속되면서 해당하는 버튼(121)에 따른 전기적신호가 발생한다. 즉, 본 발명에서는 패드(120)의 오목부(123)에 도포된 전도체(130)가 액츄레이터의 역할을 수행한다.As such, the conductor 130 is connected to the key terminal 141 to generate an electrical signal according to the corresponding button 121. That is, in the present invention, the conductor 130 applied to the recess 123 of the pad 120 serves as an actuator.

한편 사용자가 버튼(121)을 가압하던 힘을 제거하면 합성수지재의 패드(120)는 원형으로 복원되면서 전도체(130)는 키단자(141)에서 탈락된다.On the other hand, when the user removes the force pressing the button 121, the pad 120 of the synthetic resin material is restored to a circular shape while the conductor 130 is dropped from the key terminal 141.

이와 같은 작동관계에 따라 사용자는 패드(120)를 눌러 원하는 정보를 입력한다.In accordance with such an operation relationship, the user presses the pad 120 to input desired information.

앞서 상세히 설명한 바와 같이, 본 발명의 이동통신단말기의 키패드는 패드와 PCB 및 오목부에 도포된 전도체로 구성된다. 종래의 키패드는 패드, 돔스위치부, 메탈 돔, PCB로 구성되어 두께가 두꺼웠으나, 본 발명에서는 패드와 PCB의 두께로 구성되어 이동통신단말기의 슬림화할 수 있다.As described in detail above, the keypad of the mobile communication terminal of the present invention comprises a pad, a PCB, and a conductor applied to the recess. Conventional keypad is composed of a pad, a dome switch unit, a metal dome, a PCB was thick, but in the present invention is composed of a pad and a PCB thickness can be made slimmer mobile communication terminal.

또한, 본 발명의 이동통신단말기의 키패드는 키패드를 구성하는 구성요소가 작고 단순한 구성을 갖고 있어 조립이 간편하여 생산성을 향상시키며, 내구성이 우수하다는 장점이 있다. 또한, 이동통신단말기의 제작비용을 절감할 수 있다는 장점이 있다.In addition, the keypad of the mobile communication terminal of the present invention has a small and simple configuration of the components constituting the keypad has the advantage that the assembly is easy to improve productivity, and excellent durability. In addition, there is an advantage that can reduce the manufacturing cost of the mobile communication terminal.

이상에서 본 발명의 이동통신단말기의 키패드에 대한 기술사상을 첨부도면과 함께 서술하였지만, 이는 본 발명의 가장 양호한 실시예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다.Although the technical idea of the keypad of the mobile communication terminal of the present invention has been described with the accompanying drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the present invention.

Claims (2)

다수 개의 키단자가 형성된 인쇄회로기판을 구비한 키패드에 있어서,In a keypad having a printed circuit board having a plurality of key terminals, 일면에는 상기 인쇄회로기판의 키단자와 대응하여 다수 개의 오목부가 형성되고 타면에는 상기 오목부에 대응하여 다수 개의 버튼이 형성된 패드와,A pad having a plurality of recesses formed on one surface thereof to correspond to the key terminal of the printed circuit board, and a plurality of buttons formed on the other surface thereof corresponding to the recess portion; 상기 오목부의 안쪽에 도포된 전도체를 포함하는 것을 특징으로 하는 이동통신단말기의 키패드.Keypad of the mobile communication terminal, characterized in that it comprises a conductor applied to the inside of the recess. 제1항에 있어서,The method of claim 1, 상기 패드는 유연한 합성수지재인 것을 특징으로 하는 이동통신단말기의 키패드.The pad of the mobile communication terminal, characterized in that the flexible synthetic resin material.
KR1020040002621A 2004-01-14 2004-01-14 Keypad of mobile communication terminal Expired - Fee Related KR100596302B1 (en)

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