KR20020080687A - Key-pad manufacturing process of Cellular Phone to injection mold - Google Patents

Key-pad manufacturing process of Cellular Phone to injection mold Download PDF

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Publication number
KR20020080687A
KR20020080687A KR1020010020413A KR20010020413A KR20020080687A KR 20020080687 A KR20020080687 A KR 20020080687A KR 1020010020413 A KR1020010020413 A KR 1020010020413A KR 20010020413 A KR20010020413 A KR 20010020413A KR 20020080687 A KR20020080687 A KR 20020080687A
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South Korea
Prior art keywords
pressing key
color
character
characters
keypad
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KR1020010020413A
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Korean (ko)
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김영호
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김영호
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Priority to KR1020010020413A priority Critical patent/KR20020080687A/en
Publication of KR20020080687A publication Critical patent/KR20020080687A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)

Abstract

PURPOSE: A method of fabricating a keypad for a cellular phone is provided to precisely carve figures and characters by laser in a lower part of a thin pressing key, thereby exactly showing the figures and the characters to users as preventing abrasion of the figures and the characters. CONSTITUTION: A pressing key molds a thin pressing key body(1) that is transparent by an injection molding(A). A ground color(2) is applied to the inside of a concave groove(1a) of the pressing key body(1)(B). A predetermined figure and a character(3) are carved by applying laser to the ground color(2) of an upper side of the concave groove(1a)(C). A figure and character color(4) is applied to a lower part of the ground color(2)(D).

Description

셀룰라폰용 키패드의 제조 방법{Key-pad manufacturing process of Cellular Phone to injection mold}Method of manufacturing a keypad for a cell phone {Key-pad manufacturing process of Cellular Phone to injection mold}

본 발명은 셀룰라폰(Cellular Phone)의 키패드에 관한 것이며 더욱 상세하게는 특히 도형, 문자가 표현된 압압키의 성형을 극히 용이하게 할 수 있는 셀룰라폰용 키패드 제조방법에 관한 것이다.The present invention relates to a keypad of a cellular phone, and more particularly, to a method for manufacturing a keypad for a cellular phone, which can extremely easily form a pressing key in which figures and characters are represented.

일반적으로 키패드는 통신기기나 전자제품 등에서 여러 기능을 수행시키기 위한 작동 입력수단으로 이용되는 것이다. 그리고 이러한 키패드는 도 3에 도시된 바와 같이 사용자가 용이하게 터치하여 원하는 기능을 입력할 수 있도록 표면으로 돌출된 압압키(K')를 구비하고 있고 이 압압키(K')를 통하여는 이용자가 용이하게 작동기능을 식별하여 선택할 수 있도록 문자나 도형(G)이 표현되어 있다.In general, the keypad is used as an operation input means for performing various functions in a communication device or an electronic product. As shown in FIG. 3, the keypad has a pressing key K 'protruding to the surface so that the user can easily touch and input a desired function. Characters or figures (G) are represented to easily identify and select operating functions.

상기 압압키(K')는 도 3에 도시된 바와 같이 탄성필름(P')을 포밍성형하여 표면으로 돌출되게 하는 것에 의해 일체로 형성하거나 또는 사출성형에 의해 별도로 성형한다.The pressing key K 'is integrally formed by forming the elastic film P' and protruding to the surface as shown in FIG. 3, or separately molded by injection molding.

문자나 도형이 표현된 압압키를 별도로 제조하는 방법으로는, 도 4에서와 같이 사출성형에 의해 소정의 두께와 폭을 갖는 투명한 압압키본체(11)를 성형하는 성형공정과, 압압키본체(11)의 이면에 소정 색상의 문자나 도형(12)을 인쇄하고 바탕색(13)을 도포하는 인쇄공정을 통하여 압압키(10)를 제조하는 방법과, 도 5에서와 같이 사출성형에 의해 소정의 두께와 폭을 갖는 투명한 압압키본체(21)를 성형하는 성형공정과, 압압키본체(21)의 표면에 도형이나 문자색상(22)과 바탕색(23)을 차례로 적층되게 도포하는 도색공정과, 표면측의 바탕색(23)에 레이저를 조사하여 소정의 도형, 문자(24)가 상기 도형, 문자색상(22)에 의해 표현되게 하는 레이저각인공정과, 표면에 형성된 도형, 문자(24)를 보호하기 위해 표면에 코팅층(25)을 형성하는 코팅층형성공정을 통하여 압압키(20)를 제조하는 방법이 제공되어 있다.As a method of separately manufacturing a press key in which letters or figures are expressed, as shown in FIG. 4, a molding process of molding a transparent press key body 11 having a predetermined thickness and width by injection molding, and a press key body ( 11) a method for manufacturing the pressing key 10 through a printing process of printing a character or figure 12 of a predetermined color on the back side and applying a background color 13, and by injection molding as shown in FIG. A molding step of molding the transparent pressing key body 21 having a thickness and a width, a painting step of sequentially applying a figure or character color 22 and a background color 23 to the surface of the pressing key body 21 in a lamination order; Laser engraving on the surface color 23 on the surface side to protect a predetermined figure or character 24 by the graphic and character color 22, and to protect the figure and character 24 formed on the surface. In order to form a coating layer 25 on the surface through a coating layer forming process A method of manufacturing the press key 20 is provided.

상기와 같이 별도로 제조된 압압키(10,20)는 탄성이 우수한 탄성필름 표면의 소정 위치에 접착제에 의해 고정하면 셀루라폰용 키패드의 제조가 완료된다.The pressing keys 10 and 20 separately prepared as above are fixed to a predetermined position on the surface of the elastic film with excellent elasticity by using an adhesive to complete the manufacture of the keypad for cell phone.

그러나 앞의 제조방법에 의한 압압키(10)는 압압키(10)의 정면에서는 문자, 도형(12)이 정확하게 보여지나 압압키(10)와 비스듬한 위치에서는 압압키(10)의 굴곡된 상하 경계면의 형상에 의해 문자, 도형(12)이 왜곡되어 보여지게 되는 문제점이 있고 또 직접 미세한 문자나 도형(12)을 인쇄에 의해 형성하여야 하나 인쇄과정 중 정전기나 인쇄기의 진동 등의 요인으로 인쇄부분 외의 부분으로 도료가 번지는 경우가 빈번하게 발생되어 제품 및 생산성 저하를 초래하고 있다.However, the pressing key 10 according to the above-described manufacturing method has the characters and figures 12 correctly displayed on the front side of the pressing key 10, but the curved upper and lower boundary surfaces of the pressing key 10 at an oblique position with the pressing key 10. Characters and figures 12 are distorted due to the shape of and the fine characters or figures 12 must be directly formed by printing. However, due to factors such as static electricity or vibration of the printer during printing, Frequent smearing of paint into parts has resulted in reduced product and productivity.

또한 뒤의 압압키 제조방법에 의한 압압키(20)는 표면측에 도형, 문자(24)를 형성한 것이므로 코팅층(25)이 손상될 경우에는 도형, 문자(24)가 쉽게 마모될 우려가 있고 또 도형, 문자(24)의 보호를 위하여 별도의 코팅층(25)을 형성하여야 되는 제조상의 번거로움이 있다.In addition, since the pressing key 20 according to the manufacturing method of the pressing key is formed on the surface side of the figure and the character 24, when the coating layer 25 is damaged, the figure and the character 24 may be easily worn. In addition, there is a manufacturing hassle to form a separate coating layer 25 for the protection of figures, characters 24.

본 발명은 상기와 같은 종래의 여러 문제점을 고려하여 발명된 것으로서, 그 목적으로 하는 것은, 별도의 성형공정에 의해 제조된 압압키를 구비하고 있는 셀룰라폰용 키패드에 있어서 두께를 얇게 성형한 압압키의 저부에 레이저에 의한 각인으로 도형, 문자를 용이하고 정밀하게 형성함으로서 도형, 문자가 정확하게 사용자에게 보여짐은 도형, 문자의 마모를 방지할 수 있고 제품의 품질과 생산성 향상을 도모할 수 있는 셀룰라폰용 키패드 제조방법을 제공하고자 하는 것에 있다.The present invention has been invented in view of the above-mentioned various problems, and an object thereof is to provide a press key formed in a thin thickness in a keypad for a cell phone having a press key manufactured by a separate molding process. Cell phone keypad that can prevent the wear of figures and characters and improve the quality and productivity of products by easily and precisely forming figures and characters by laser engraving on the bottom. It is to provide a manufacturing method.

도 1은 본 발명에 따른 압압키의 제조과정을 나타내는 단면도1 is a cross-sectional view showing the manufacturing process of the pressing key according to the present invention.

도 2는 본 발명에 의해 제조된 압압키를 탄성필름에 부착하여 된 셀룰라폰용 키패드의 단면도Figure 2 is a cross-sectional view of a keypad for a cell phone made by attaching a pressure key manufactured by the present invention to an elastic film

도 3은 종래 셀룰라폰용 키패드의 사시도3 is a perspective view of a keypad for a conventional cell phone

도 4 및 도 5는 종래 셀룰라폰용 키패드에 있어서 압압키의 제조공정을 나타내는 면도4 and 5 are a view showing the manufacturing process of the pressing key in the conventional keypad for cell phones

〈도면중 주요 부분에 대한 부호설명〉<Description of Signs of Major Parts of Drawings>

1. 압압키본체 --- 1a. 요홈부1. Press Key Body --- 1a. Groove

2. 바탕색2. Background color

3. 도형, 문자3. Shapes, Characters

4. 도형,문자색4. Shape, text color

A. 성형공정A. Molding Process

B. 바탕색도포공정B. Background Color Coating Process

C. 레이저각인공정C. Laser Engraving Process

D. 도형,문자색도포공정D. Shape, Text Color Coating Process

K. 압압키K. Abkhazia

P. 탄성필름P. Elastic Film

100. 키패드100. Keypad

본 발명에서 제공하는 셀룰라폰용 키패드 제조방법은, 도형, 문자가 표현된 압압키를 탄성필름의 표면에 부착하여 된 셀룰라폰용 키패드에 있어서, 상기 압압키는 사출성형에 의해 ∩형상의 두께가 얇은 투명한 압압키본체를 성형하는 성형공정과, 압압키본체의 요홈부 내면 전체에 바탕색을 도포하는 바탕색도포공정과, 요홈부 상면의 바탕색에 레이저를 조사하여 소정의 도형, 문자를 각인하는 레이저각인공정과, 바탕색 저부에 도형 ,문자색을 도포하는 도형, 문자색도포공정을 거쳐 제조하는 것을 특징으로 한다.In the method for manufacturing a keypad for a cell phone provided by the present invention, in a keypad for a cell phone in which a pressing key in which figures and characters are expressed is attached to a surface of an elastic film, the pressing key is thin in shape having a thin thickness by injection molding. A molding process for forming the press key body, a base color coating process for applying the base color to the entire inner surface of the recess, and a laser engraving process for stamping predetermined figures and characters by irradiating a laser to the base color of the upper surface of the recess; Characterized by manufacturing the figure, the figure to apply the character color to the base color base, the character color coating process.

상기와 같은 본 발명은 두께를 얇게 성형한 압압키본체의 저부에 도형, 문자를 형성시킨 것이므로 도형, 문자의 마모를 방지할 수 있음은 물론 도형, 문자가 외부에서 왜곡 없이 정확하게 보여지고 바탕색에 각인된 도형, 문자를 바탕색 저부에 도포된 도형, 문자색에 의해 소정의 색상으로 표현되게 한 것이므로 도형, 문자를 번짐 없이 정밀하고 정확하게 형성할 수 있어 제품의 품질과 생산성을 향상시킬 수 있다.The present invention as described above is to form a figure, a letter at the bottom of the pressing key body formed in a thin thickness can prevent the wear of the figure, the letter, as well as the figure, the letter is accurately seen without distortion from the outside and stamped in the background color Since the figure and the character is expressed in a predetermined color by the figure and the color applied to the bottom of the background color, the figure and the character can be precisely and accurately formed without smearing, thereby improving product quality and productivity.

이하 본 발명의 구체적인 일 실시예를 도면에 따라서 상세히 설명한다.Hereinafter, a specific embodiment of the present invention will be described in detail with reference to the drawings.

본 발명에 있어서 도형, 문자가 표현된 압압키를 별도로 제조하고 이 압압키를 탄성필름의 표면에 부착하여 셀루라폰용 키패드를 제조하는 과정은 종래와 동일하나 본 발명에서는 도형, 문자가 표현된 압압키를 제조하는 방법을 종래와 달리하고 있는 것이며 압압키의 구체적인 제조방법은 다음과 같다.In the present invention, a process of manufacturing a press key in which figures and characters are represented separately and attaching the press key to the surface of the elastic film is the same as in the related art, but in the present invention, the pressure in which the figures and characters are expressed is the same. The manufacturing method of the presser is different from the conventional method, and the specific manufacturing method of the presser is as follows.

도 1은 본 발명에 따른 압압키의 제조과정을 나타내는 단면도이고, 도 2는 본 발명에 의해 제조된 압압키를 탄성필름에 부착하여 된 셀룰라폰용 키패드의 단면도를 각각 도시하고 있다.1 is a cross-sectional view showing a manufacturing process of a pressing key according to the present invention, Figure 2 shows a cross-sectional view of a keypad for a cell phone made by attaching a pressing key manufactured by the present invention to an elastic film, respectively.

도 1에 도시한 바와 같이, 본 발명에 있어서의 압압키는 성형공정(A)과, 바탕색도포공정(B)과, 레이저각인공정(C)과, 도형,문자색도포공정(D)을 거쳐 제조한다.As shown in Fig. 1, the pressing key in the present invention is manufactured through a molding step (A), a background color coating step (B), a laser engraving process (C), and a graphic and character color coating step (D). do.

성형공정(A)은 경질이고 투명한 합성수지를 이용하여 사출성형에 의해 저부에 ∩형의 요홈부(1a)가 형성되게 압압키본체(1)를 성형하는 공정이다. 여기서 압압키본체(1)의 저부에 요홈부(1a)를 형성하는 것은 압압키본체(1)의 전체적인 두께를 얇게하여 요홈부(1a) 상면에 표현되는 도형, 문자가 압압키본체(1)의 외측에서압압키본체(1)의 두께에 의해 왜곡되어 보이는 것을 방지하기 위함이다.The molding step (A) is a step of molding the pressing key body 1 using a hard and transparent synthetic resin so that the groove-shaped groove portion 1a is formed at the bottom by injection molding. Here, forming the recessed portion 1a at the bottom of the pressing key body 1 is to reduce the overall thickness of the pressing key body 1, the figure and characters expressed on the upper surface of the recessed portion 1a are pressed by the pressing key body 1 This is to prevent the distortion caused by the thickness of the pressing key body 1 from outside.

상기 압압키본체(1)를 이루는 함성수지로는 에폭시, 폴리비닐수지, 폴리에스테르, 폴리카보네이트, 폴리올레핀, 아크릴 등을 이용할 수 있다.Epoxy, polyvinyl resins, polyesters, polycarbonates, polyolefins, acrylics, etc. may be used as the resin containing the press key body (1).

바탕색도포공정(B)은 압압키본체(1)의 요홈부(1a) 내면 전체에 바탕색(2)을 도포하는 공정이다,Background color application step (B) is a process of applying the background color (2) to the entire inner surface of the recess (1a) of the pressing key body (1),

레이저각인공정(C)은 요홈부(1a) 상면의 바탕색(2)에 레이저를 조사하여 소정의 도형, 문자(3)를 각인하는 공정이고 이와 같이 도형, 문자(3)를 각인하면 압압키본체(1)의 외부 상측에서 상기 도형, 문자(3)가 보여진다.The laser engraving process (C) is a process of imprinting a predetermined figure or character (3) by irradiating a laser on the background color (2) on the upper surface of the recess (1a). The figure and character 3 are shown on the outer upper side of (1).

도형,문자색도포공정(D)은 바탕색(2) 저부에 상기 도형, 문자(3)에 해당하는 도형,문자색(4)을 도포하여 도형, 문자(3)를 소정의 색상으로 표현되게 하는 공정이다.The figure and text color application step (D) is a process of applying the figure and the character color 4 corresponding to the figure and the character 3 on the bottom of the background color 2 so that the figure and the character 3 are expressed in a predetermined color. .

상기와 같이 제조된 압압키(K)는 요홈부(1a)를 도 2에서와 같이 탄성필름(P)의 상부에 형성된 결합돌기(P1)에 접착제를 도포한 상태로 삽입하여 부착하는 것이고 이와 같이 탄성필름(P) 표면의 각 결합돌기(P1)에 해당 압압키(K)를 부착하면 셀룰라폰용 키패드(100)의 제조가 완료된다.Press key (K) manufactured as described above is to insert and insert the groove (1a) in the state in which the adhesive is applied to the coupling projection (P1) formed on the upper portion of the elastic film (P) as shown in FIG. When the corresponding pressing key K is attached to each coupling protrusion P1 on the surface of the elastic film P, the manufacture of the keypad 100 for a cell phone is completed.

상기와 같은 키패드(100)는 셀룰라폰의 앞쪽에 구비되는 회로기판(200)의 앞쪽에 설치되고, 이 경우 상기 탄성필름(P)의 이면측에 형성된 압압돌기(P2)는 회로기판(200)의 입력키(200a)를 덮고 있는 돔부(200b)에 접촉된 상태를 유지한다. 그리고 위와 같은 키패드(100)의 설치상태에서 키패드(100)의 압압키(K)를 선택적으로 압압하면 탄성필름(P)의 압압돌기(P2)가 회로기판(200)의 입력키(200b)를 압압하는 것에 의해 특정 기능의 입력신호를 부여한다. 또 압압키(K)에 가하여진 압압력을 해제하면 탄성필름(P)의 탄성복원력에 의해 압압키(K)는 원위치로 복귀한다.The keypad 100 as described above is installed in front of the circuit board 200 provided in front of the cell phone, in this case the pressing projection (P2) formed on the back side of the elastic film (P) is the circuit board 200 Maintains contact with the dome portion 200b covering the input key 200a. In addition, when the pressing key K of the keypad 100 is selectively pressed in the installation state of the keypad 100 as described above, the pressing protrusion P2 of the elastic film P opens the input key 200b of the circuit board 200. Pressing gives an input signal of a specific function. When the pressing force applied to the pressing key K is released, the pressing key K is returned to its original position by the elastic restoring force of the elastic film P.

상기와 같은 본 발명은 두께를 얇게 성형한 압압키본체의 저부에 도형, 문자를 형성시킨 것이므로 도형, 문자의 마모를 방지할 수 있음은 물론 도형, 문자가 압압키본체 외부의 경사진 위치에서도 왜곡 없이 정확하게 보여지게 할 수 있다.The present invention as described above is to form a figure, a letter on the bottom of the pressing key body formed in a thin thickness can prevent the wear of the figure, the character, as well as distortion of the figure, characters in the inclined position outside the press key body Can be displayed accurately without.

또 압압키본체 저부의 바탕색에 각인된 도형, 문자를 바탕색 저부에 도포된 도형, 문자색에 의해 소정의 색상으로 표현되게 한 것이므로 도형, 문자를 번짐 없이 정밀하고 정확하게 형성할 수 있어 제품의 품질과 생산성을 향상시킬 수 있다.In addition, since the figure imprinted on the base color of the bottom of the press key body and the characters are expressed in a predetermined color by the figure and the color of the color applied to the bottom of the base color, it is possible to form the figures and characters accurately and accurately without smearing. Can improve.

Claims (1)

도형, 문자가 표현된 압압키를 탄성필름의 표면에 부착하여 된 셀룰라폰용 키패드에 있어서, 상기 압압키는 사출성형에 의해 ∩ 형상의 두께가 얇은 투명한 압압키본체(1)를 성형하는 성형공정(A)과, 압압키본체(1)의 요홈부(1a) 내면 전체에 바탕색(2)을 도포하는 바탕색도포공정(B)과, 요홈부(1a) 상면의 바탕색(2)에 레이저를 조사하여 소정의 도형, 문자(3)를 각인하는 레이저각인공정(C)과, 바탕색(2) 저부에 도형 ,문자색(4)을 도포하는 도형, 문자색도포공정(D)을 거쳐 제조하는 것을 특징으로 하는 셀룰라폰용 키패드의 제조방법.In a keypad for a cell phone, wherein a pressing key in which figures and characters are expressed is attached to the surface of an elastic film, wherein the pressing key is a molding process of forming a transparent pressing key body 1 having a thin thickness by injection molding ( A), a background color application step (B) for applying a background color (2) to the entire inner surface of the recess (1a) of the pressing key body (1), and a background color (2) on the upper surface of the recess (1a) to irradiate a laser. It is produced through a laser engraving process (C) for stamping a predetermined figure, character (3), a figure for applying the figure, the character color (4) to the bottom of the background color (2), the character color application step (D) Method of manufacturing a keypad for a cell phone.
KR1020010020413A 2001-04-17 2001-04-17 Key-pad manufacturing process of Cellular Phone to injection mold KR20020080687A (en)

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KR100768907B1 (en) * 2006-03-02 2007-10-19 케이제이알텍(주) Side key for electronic device and preparing method thereof
KR100768902B1 (en) * 2006-03-02 2007-10-22 케이제이알텍(주) Side key for electronic device and preparing method thereof
KR101034137B1 (en) * 2004-09-20 2011-05-13 엘지전자 주식회사 Fabricating method for key pad of portable terminal
KR200459146Y1 (en) * 2010-07-28 2012-03-21 (주)유비엠메카트로닉 Key button and keypad assembly
KR101143618B1 (en) * 2010-08-09 2012-05-09 (주)미래씨엔피 Keypad for cellular phone and the manufacturing method
KR101259796B1 (en) * 2011-09-05 2013-04-30 엘지전자 주식회사 Method of manufacturing a button of appliance
KR101331231B1 (en) * 2012-06-04 2013-11-18 박한인영 Independent type button for keypad device and keypad device having the same

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JP2000330689A (en) * 1999-05-24 2000-11-30 Polymatech Co Ltd Key sheet and its manufacture
KR20010018475A (en) * 1999-08-19 2001-03-05 김종수 color transparent key rubber

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KR19980063561A (en) * 1996-12-06 1998-10-07 니시히라토시히로 Manufacturing Method of Color Keypad for Contact of Illuminated Rubber Switch
JPH10223083A (en) * 1997-02-10 1998-08-21 San Arrow Kk Manufacture of key pad
JPH11120857A (en) * 1997-10-13 1999-04-30 Shin Etsu Polymer Co Ltd Manufacture of cover member for push-button switch
JP2000330689A (en) * 1999-05-24 2000-11-30 Polymatech Co Ltd Key sheet and its manufacture
KR20010018475A (en) * 1999-08-19 2001-03-05 김종수 color transparent key rubber

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101034137B1 (en) * 2004-09-20 2011-05-13 엘지전자 주식회사 Fabricating method for key pad of portable terminal
KR100768907B1 (en) * 2006-03-02 2007-10-19 케이제이알텍(주) Side key for electronic device and preparing method thereof
KR100768902B1 (en) * 2006-03-02 2007-10-22 케이제이알텍(주) Side key for electronic device and preparing method thereof
KR200459146Y1 (en) * 2010-07-28 2012-03-21 (주)유비엠메카트로닉 Key button and keypad assembly
KR101143618B1 (en) * 2010-08-09 2012-05-09 (주)미래씨엔피 Keypad for cellular phone and the manufacturing method
KR101259796B1 (en) * 2011-09-05 2013-04-30 엘지전자 주식회사 Method of manufacturing a button of appliance
KR101331231B1 (en) * 2012-06-04 2013-11-18 박한인영 Independent type button for keypad device and keypad device having the same

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