1284907 A7 ~~ ......... I ———————B7 發明獅 “ ) "~--—~ 本發明係有關於—錄仅& m + ^ J 禋保險絲電阻器及其製法，特 別疋有關於一種具有良好電性转 町电旺符性之低價保險絲電 阻器及其製法。 〈請先閱讀背面之注念氺項再場舄本頁) 通常保險絲電阻器係用以保護裝配於電子機器 之各電路元件者，其穩定時具有一般電阻器之作用， 而當超過負料異常時，藉其溶斷特性，具有電路遮 斷機之作用。 習知之保險絲電阻器係以無電解電鍍方式將由 碳、Sn-Ni或Ni-Cr等化合物形成之薄膜層附著於電 阻體後，藉於其表面進行螺旋形切割（以下稱為修邊） 所形成。此種習知之保險絲電阻器可以較低廉之費用 製造，然而，在製法上，令電阻值在〇1Ω以下則極 為困難，且通常製造電阻值在〇·22 Q以下之保險絲電 阻器是不可能的。因此，將特定值以上之電流施加於 電子機器電路時，有保險絲電阻器過度發熱之問題。 因此，乃提出使保險絲電阻器之額定電力增加或使用 微保險絲之方法。然而，單獨增加保險絲電阻器之額 定電流時’有電阻器之尺寸增大之弊，而若使用微保 險絲時，在製品之構造特性、單位生產性及材料費 上，則有價錢高之弊。 本發明之主要目的即在於提供一種在不增加額 定電流下，具有優異電阻特性及熔斷特性且價格低廉 之保險絲電阻器及其製法。 為達成上述目的，依本發明之一較佳實施例，提 本紙張尺度適用中國國家標準（CNS) Α4規格（210X297公釐） -4- 1284907 A7 一 —__B7 五、發明説明（3 ) 第3圖係說明依本發明，於第2圖中之可溶斷元 件層蒸鍍防止氧化層之截面圓。 第4圖係說明依本發明，設置包圍第3圖中之構 成物兩端之罩體而形成第2構成物之過程的戴面圖。 第5圖係說明依本發明，於第4圖之構成物上形 成螺旋形之溝而形成第3構成物之過程的截面圖。 第6圖係說明依本發明，於第5圖之構成物形成 導線及保護膜而完成保險絲電阻器之過程的截面圖。 (發明之實施形態） 以下，參照所附圖式，就本發明之較佳實施例更 詳細地加以說明。 第1圖〜第ό圖係用以說明本發明各實施例之保 險絲電阻器之製法的截面圖。 首先，如第1圖所示，於棒狀電阻體1之表面上 層疊以導電性材料構成之導電層2 ^在本實施例中， 電阻體1由如高純度之陶瓷般之材料形成。導電性材 料可使用鎳鉻（Ni-C〇，舉例言之，這是以在習知之 保險絲電阻器之製法使用的無電解電鑛方法，於電阻 體1上表面層昼。 其次，如第2圖所示，於導電層2表面上層疊具 有溶斷特性之可熔斷元件層3。在本實施例中，可溶 斷元件層3以添加銅之材料形成，除了銅以外，亦可 使用溫度係數約2000ppm/°C以上，且固有非電阻值 本紙張尺度適用中國國家標準（OJS) A4規格（21〇><297公爱） (請先閲讀背面之注意事項再填荈本頁) 訂- -6 - 1284907 五、發明説明（4 ) 約1·6χ 10-Vq 8χ 1〇.8m左右之材料。可熔斷元件 層3於過量電流流過電阻體丨時，藉因此產生之發 熱，熔融熔斷。在此，溫度係數係決定熔斷特性最重 要之物理性質。溫度係數若高，藉因電流上升產生之 發熱，可熔斷元件層3之電阻值便上升。藉此，藉焦 耳熱使可熔斷元件層3之溫度上升至熔融點，熔斷該 元件層3。在本實施例中，由於用作可熔斷元件層3 之材料的銅溫度係數高，且不但非電阻值低，熔融點 也低故可作用為具有優異電性特性尤保險絲。 此種可熔斷元件層3可以電解電鍍方法蒸鍍於導 電層2表面上。除了電解電鍍方法外，另一方式係使 用喷濺法等，將可熔斷元件層3直接蒸鍍於電阻尤j 之表面上。如此，在不使用電解電鑛方法下，層疊可 炫斷元件層3時，可省略導電層2。 之後，如第3囷所示，為防止可熔斷元件層3在 大氣中氧化，乃於可熔斷元件層3之表面上蒸鍍防止 氧化層4。舉例言之，防止氧化層4可利用喷霧加工 法蒸鍍銀膏。亦可省略此防止氧化層4，而於可溶斷 元件層3之表面上直接形成矽塗料等保護膜（後述）。 然而，由於在製程中可熔斷元件層3曝露於大氣中， 故層疊防止氧化層4較有利。 如上所述，以3個層2、3、4形成之第！構成物 10兩端之最終/初期電阻值係依各層之種類及厚度決 定，本實施例係形成大約5m Ω以下之極低電阻值。 本紙張尺度適用中國國家標準（CNS) A4規格（210X 297公釐） 1284907 A7 __________B7 _— 一 五、發明説明（5 ) (請先閲讀背面之注意事項再填舄本頁) 接著，如第4圖所示，設置包圍構成物1〇兩端 之罩體5而形成第2構成物20。藉該罩體5,可熔斷 元件層3可與外部電性地連結。第2構成物20兩端 之電阻值維持在3〜4mΩ左右。 之後，如第5圖所示，於3個層2、3、4形成螺 旋狀溝6而形成第3構成物30。第3構成物30兩端 之最終完成電阻值通常維持在20〜ΙΟΟιηΩ左右。此最 終完成電阻值係依第1構造物10兩端之最終/初期電 阻值及螺旋形切割之旋轉次數決定。詳而言之，螺旋 形切割（修邊）後之最終完成電阻值係依螺旋之寬度 決定’並依該決定之電阻值提供與保險絲之額定電流 同樣之特性。依最終完成電阻值可決定對應於保險絲 等之額定電流的特性。 最後，如第6圖所示，藉焊接尊將導線7附著於 罩體5外側。藉該導線7，可電性地連結安裝保險電 阻器之電路基板與可熔斷元件層3。之後，以絕緣性 塗料塗覆第3構造物30之外側，形成保護膜8，藉 此，完成本發用之保險絲電阻器40。在此，保護膜8 由外部使可熔斷元件層3及罩體5絕緣，而由外部之 衝擊保護位於其内部之各構成要素。為可顯示額定電 流等，#護膜8之外側面可以不燃性塗料形成。 上述係就本發明之較佳實施形態說明，在不脫離 本發明之申請專利範圍下，業者可進行各種變更。 因此’依本發明，藉於電阻體表面上蒸鍍由溫度 本紙張尺度適用中國國家標準（CNS) Α4規格（210X297公釐） 1284907 A7 B7 五、發明説明（ 係數約aoooppmrc以上且固有非電阻值低之銅之材 料形成的可熔斷元件層，可製造具有20〜ΙΟΟιηΩ左右 之極低電阻值之保險絲電阻器。如此，由於具有極低 電阻值之保險絲電阻器不致過度發熱，故可良好地進 行保險絲之固有機能。又，由於本發明之製法係應用 習知之保險絲電阻器之製造加工法，故不用另外之設 備費用，即可具體實現本發明，而可達成高生產性。 元件標號對照表】 1···電阻體 2···導電層 3···可熔斷元件層 4…防止氧化層 5…罩體 6…螺旋形溝 7…導線 8…保護膜 …第1構成物 2〇…第2構成物 30…第3構成物 衣紙張尺度適用中國國家標準（Q}S) A4規格（21〇><297公董） (請先閲讀背面之注意事項再蜞菸本頁) .装· 訂— .線丨 -9-1284907 A7 ~~ ......... I ——————— B7 Invented Lion “ ) "~---~ This invention is related to recording only & m + ^ J 禋 fuse resistor And its method of manufacture, especially for a low-cost fuse resistor with good electrical conductivity, and its method of manufacture. <Please read the back of the note on the page again) This is usually a fuse resistor It is used to protect the circuit components assembled in an electronic machine. It has the function of a general resistor when it is stable, and has the function of a circuit breaker when it exceeds the negative material. The film layer formed of a compound such as carbon, Sn-Ni or Ni-Cr is adhered to a resistor by electroless plating, and is formed by spiral cutting (hereinafter referred to as trimming) on the surface thereof. It is known that the fuse resistor can be manufactured at a relatively low cost. However, in the manufacturing method, it is extremely difficult to make the resistance value below 〇1 Ω, and it is usually impossible to manufacture a fuse resistor having a resistance value of less than 2222 Q. Therefore, Current above a certain value When applied to an electronic machine circuit, there is a problem that the fuse resistor is excessively heated. Therefore, a method of increasing the rated power of the fuse resistor or using a micro fuse is proposed. However, when the rated current of the fuse resistor is separately increased, there is a resistor. The increase in size is disadvantageous, and if a micro-fuse is used, there is a disadvantage in that the structural characteristics, unit productivity, and material cost of the product are high. The main object of the present invention is to provide a method of not increasing the rated current. A fuse resistor having excellent resistance characteristics and fusing characteristics and low cost and a method for manufacturing the same. In order to achieve the above object, according to a preferred embodiment of the present invention, the paper size is applicable to the Chinese National Standard (CNS) Α4 specification (210X297 public) PCT) -4- 1284907 A7 I-__B7 V. DESCRIPTION OF THE INVENTION (3) Fig. 3 is a cross-sectional view showing the vapor-deposited oxide layer of the soluble element layer in Fig. 2 according to the present invention. According to the present invention, a mask having a process of forming a second component by enclosing a cover body at both ends of the constituents in Fig. 3 is provided. According to the invention, a cross-sectional view of a process of forming a spiral groove to form a third structure is shown in Fig. 4. Fig. 6 is a view showing completion of forming a wire and a protective film in the structure of Fig. 5 according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS In the following, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 through FIG. A sectional view of a method of manufacturing a fuse resistor of each embodiment. First, as shown in Fig. 1, a conductive layer 2 made of a conductive material is laminated on the surface of the rod-shaped resistor 1. In the present embodiment, a resistor 1 is formed of a material such as a high-purity ceramic. The conductive material may be nickel-chromium (Ni-C〇, for example, this is an electroless ore method used in the conventional method of manufacturing a fuse resistor, in the resistor The upper surface layer of the body 1 is 昼. Next, as shown in Fig. 2, a fusible element layer 3 having a melting property is laminated on the surface of the conductive layer 2. In the present embodiment, the soluble element layer 3 is formed of a material containing copper. In addition to copper, a temperature coefficient of about 2000 ppm/° C. or more can be used, and the inherent non-resistance value is applicable to the Chinese National Standard (OJS). A4 specification (21〇><297 public love) (Please read the note on the back and fill in this page) Order - -6 - 1284907 V. Invention description (4) About 1·6χ 10-Vq 8χ 1〇 .8m or so material. The fusible element layer 3 melts and fuses when excess current flows through the resistor body 借 by the heat generated thereby. Here, the temperature coefficient determines the most important physical properties of the fusing characteristics. If the temperature coefficient is high, the resistance value of the fusible element layer 3 rises due to the heat generated by the rise of the current. Thereby, the temperature of the fusible element layer 3 is raised to the melting point by the heat of the ear, and the element layer 3 is blown. In the present embodiment, since the copper used as the material of the fusible element layer 3 has a high temperature coefficient of copper, and the non-resistance value is low, the melting point is also low, so that it can function as a fuse having excellent electrical characteristics. This fusible element layer 3 can be evaporated on the surface of the conductive layer 2 by electrolytic plating. In addition to the electrolytic plating method, another method is to directly vapor-deposit the fusible element layer 3 on the surface of the resistor by sputtering or the like. Thus, when the splayable element layer 3 is laminated without using the electrolytic ore method, the conductive layer 2 can be omitted. Thereafter, as shown in Fig. 3, in order to prevent the fusible element layer 3 from being oxidized in the atmosphere, the oxidation preventing layer 4 is vapor-deposited on the surface of the fusible element layer 3. For example, the oxidation preventing layer 4 can be vapor-deposited by a spray processing method. The oxidation preventing layer 4 may be omitted, and a protective film (hereinafter described) such as a ruthenium coating material may be directly formed on the surface of the soluble element layer 3. However, since the fusible element layer 3 is exposed to the atmosphere during the process, laminating the oxidation preventing layer 4 is advantageous. As described above, the third layer, 2, 3, 4 are formed! The final/initial resistance values at both ends of the constituent 10 are determined depending on the type and thickness of each layer, and this embodiment forms an extremely low resistance value of about 5 m Ω or less. This paper scale is applicable to China National Standard (CNS) A4 specification (210X 297 mm) 1284907 A7 __________B7 _- 1-5, invention description (5) (please read the notes on the back and fill in this page) Next, as in the 4th As shown in the figure, a cover 5 that surrounds both ends of the constituent 1 is provided to form a second component 20. With the cover 5, the fusible element layer 3 can be electrically connected to the outside. The resistance value at both ends of the second constituent 20 is maintained at about 3 to 4 m?. Thereafter, as shown in Fig. 5, the spiral groove 6 is formed in the three layers 2, 3, and 4 to form the third component 30. The final completed resistance value at both ends of the third constituent 30 is usually maintained at about 20 to ΙΟΟιηΩ. The final completed resistance value is determined by the final/initial resistance value at both ends of the first structure 10 and the number of rotations of the spiral cut. In detail, the final completed resistance value after the spiral cutting (trimming) is determined by the width of the spiral and provides the same characteristics as the rated current of the fuse according to the determined resistance value. According to the final completion of the resistance value, the characteristic corresponding to the rated current of the fuse or the like can be determined. Finally, as shown in Fig. 6, the wire 7 is attached to the outside of the cover 5 by welding. By means of the wire 7, the circuit board on which the fuse is mounted and the fusible element layer 3 can be electrically connected. Thereafter, the outer side of the third structure 30 is coated with an insulating coating to form the protective film 8, whereby the fuse resistor 40 for the present invention is completed. Here, the protective film 8 insulates the fusible element layer 3 and the cover 5 from the outside, and the external components are protected by the external impact. In order to display the rated current, etc., the outer side of the #膜膜8 can be formed of a non-combustible paint. The above is a description of the preferred embodiments of the present invention, and various modifications can be made without departing from the scope of the invention. Therefore, according to the invention, the evaporation on the surface of the resistor body is applied by the temperature standard of the paper. The Chinese National Standard (CNS) Α4 specification (210X297 mm) 1284907 A7 B7 V. Description of the invention (coefficient about aoooppmrc and inherent non-resistance value) A fuse element layer formed of a low copper material can be fabricated with a fuse resistor having an extremely low resistance value of about 20 to ΙΟΟιηΩ. Thus, since the fuse resistor having a very low resistance value does not excessively heat, it can be performed well. The inherent function of the fuse. Moreover, since the manufacturing method of the present invention applies the conventional manufacturing method of the fuse resistor, the present invention can be specifically realized without additional equipment cost, and high productivity can be achieved. 1···Resistance body 2···Conductive layer 3···Fuse element layer 4...Oxidation prevention layer 5...Casing body 6...Spiral groove 7...Wire 8...Protective film...First structure 2〇... 2Constituent 30...The third component of the clothing paper scale applies to the Chinese national standard (Q}S) A4 specification (21〇><297 public director) (Please read the notes on the back and then read . Page) installed · Order - Line Shu -9-