200937479 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種過電流保護裝皇結構及其製造方 法及其裝置，尤指一種可確實保有該過電流保護裝置結構 達到特定電流或特定溫度而導致高溫熔斷，以阻斷超額電 流的保護效果之過電流保護裝置結構及其製造方法及裝 置。 〇 【先前技術】 保險絲是用來保護電路中之電路或電器設施，防止其 受到瞬間超額的電流或過高的電壓而對精密電子設備造 成損壞。因此，保險絲為不可或缺之電子元件。傳統的保 險絲裝置，為具有一線圈或保險絲材料，並將該保險絲材 料係密封於硬玻璃、陶瓷材料或其他絕緣體材料所製成的 管體中。在絕緣管中會充入惰性氣體或耐電弧之填充物。 管體之兩端分別為導電體，利用導電體與電路板上的焊接 〇 點連接，使電流能通過保險絲。當瞬間電流超過預定的電 流額值時，保險絲材料將因瞬間過大之電流所產生之熱量 而被高溫熔斷，進而形成斷路，使過大之電流不再流入電 路中，以保護電路及電器設備免於損壞。如此結構之保險 絲裝置在較大電流（ 240A)及大電壓（ 2250V)下使用時， 因瞬間產生極大之能量，導致保險絲溶斷時產生高熱，使 得周圍的介質迅速膨脹，而造成管體爆裂；同時產生電弧 (arc)因此極易燒毁周圍的電子元件及毀損昂貴系統設 備。 200937479 故傳統之保險絲裝置其構造及製造方法上多著重在 抑制電弧，如美國專利公告號6507264、5572181、 -5923239、6507265、5812046、5596306等，但其製程較為 . 繁複；故又出現如台灣專利公開號第200727319號之過電 流保護元件，如第一圖所示，該過電流保護元件1係包含 有：一保險絲本體11以及一保險絲包覆體12，其中該保險 絲本體11兩端分別延伸出第一、第二電極13、14,而該保 險絲包覆體12係由一高分子材料組成，以當過電流保護元 © 件處於一過電流之情況下，該保險絲包覆體12可吸收該保 險絲本體11熔斷所產生之熱量並抑制電弧之產生。 然而，就現實而言，當保險絲本體11通電作動而產生 熱源時’該一部份熱源會因為該保險絲本體11與該保險絲 包覆體12之接觸作用，而將該部分熱源經由保險絲包覆體 12熱傳導而散逸’使得該設定之超額電流通過保險絲本體 11時，該保險絲本體11無法達到特定電流或特定溫度而高 溫熔斷，進而無法達到阻斷超額電流的電路保護效果，而 Ο 使電氣裝置之電子電路受損或燒毀。 【發明内容】 本發明之主要目的即係在提供一種可確實保有該過 電流保護裝置結構達到特定電流或特定溫度而導致高溫 熔斷’以阻斷超額電流的保護效果之過電流保護裝置結構 及其製造方法及裝置。 為達上述目的，本發明之過電流保護裝置結構，主要 6 200937479 係於一包覆體中設置有熔絲架構單元，且該熔絲架構單元 兩端並延伸至包覆體外形成有第一、第二電極，於製造過 程中，經由氣體輔助射出成型步驟，使得該熔絲架構單元 與包覆體間係設有至少一氣體容置之空間，使該熔絲架構 單元通電後所產生之熱源不會經由包覆體熱傳導而散 逸，以確保達到特定電流或特定溫度而高溫熔斷，進而確 實保有電路保護之效果。 ®【實施方式】 本發明之特點，可參閱本案圖式及實施例之詳細說明 而獲得清楚地瞭解。 本發明「過電流保護裝置結構及其製造方法及其裝 置」，其中，該過電流保護裝置結構2，如第二圖所示主 要係於一包覆體21中設置有熔絲架構單元22，而該熔絲 架構單元22係長度為10 mm及直徑為0. 13 mm厚的銅線或 銅合金線，依序鍍上10//m厚度的銀層及6#πι厚度的錫 〇 層，且該熔絲架構單元22兩端並延伸至包覆體21外形成 有第一、第二電極23、24，其中，該熔絲架構單元22與 包覆體21間係設有至少一空間25，該空間25中可進一 步填充有氣體251，例如氮氣、氦氣等惰性氣體。 該包覆體21可以為耐電弧材料，該耐電弧材料可以 為熱可塑性材料或熱固性材料，其中，該熱可塑性材料包 含：（a)結晶性高分子材料：聚乙烯、聚丙烯、聚全氟乙 烯、尼龍12、尼龍6、尼龍66、尼龍6T、尼龍9T、聚對 200937479 苯二甲酸丁二醇醋、聚對笨二甲酸乙 分子聚合物、乙婦共聚物侧 聚合V:;性，分子材料:丙烯腈-丁二烯-笨乙烯三元共 =:二r樹脂、聚_聚：: 丙綱、苯乙稀;=殘酸:嫌丙稀樹脂、聚子基 ❹ Ο 脂、祕該油性㈣可以為環氧樹 樹脂、聚亞酿胺脂、脲樹脂、美耐皿(Melamine〕 含有水rr:二 =或:rr;無機物，例如含有三分子結= 體21亦可形成有内^晶水之氫氧化鎮；當然、，該包覆 該内層川可以為外層212,如第三圖所示， 般包覆材料，如此可货^材料，而該外層212則可以為一 成本0 耐电弧材料之使用而進一步降低 本發明之過電流保 且藉由氣體辅助射h絲構2中，利用耐電弧材料 22外之包覆體21，並f型方式’形成包覆於熔絲架構單元 21間之空間25,以'卷同時形成熔絲架構單元22與包覆體 之情況下，該包覆體^電流保護裝置結構處於—過電流 產生之熱量並抑制電^可吸收該熔絲架構單元22熔斷所 絲架構單元22與包^之產生，並由該空間25可使該炼 、设體21非直接接觸，使得該熔絲架構 200937479 單元22之熱源不會經由包覆體21熱傳導而散逸，以確保 該熔絲架構單元22可因特定電流或特定溫度而導致高溫 - 熔斷，進而達到阻斷超額電流的電路保護效果；另外，該 ; 熔絲架構單元22外可進一步包覆有耐電弧絕熱材料26， 如第四圖所示。 而本發明中過電流保護裝置結構之製造裝置係至少 包含有：一沖壓成型單元、一焊接單元、一氣體輔助射出 成型單元、一裁切單元以及設於上述各單元間之輸送單 ® 元，而藉由該製造裝置而依序進行下列步驟： 步驟A、提供一導線架； 步驟B、進行沖壓成型步驟，利用該沖壓成型單元31 使該導線架4形成有複數個承載單元41，以及連接各承 載單元41之連接單元42，如第五圖及第六圖所示； 步驟C、將一熔絲架構單元22設置於該等承載單元 41之間，如第七圖所示，係藉由一焊接單元將熔絲架構 單元22與該等承載單元41焊接固定； 〇 步驟D、進行氣體輔助射出成型步驟，利用氣體輔助 射出成型單元，以射出成型包覆該熔絲架構單元22以及 部份該等承載單元41之包覆體21，如第八圖所示，且該 熔絲架構單元22與包覆體21間係設有至少一氣體251 容置之空間25,請同時參閱第九圖所示，先將沖壓成型 之導線架4置放於一模具33中，再進行氣體輔助射出成 型步驟，而該氣體辅助射出成型單元32係至少包含有： 射出成型機32卜氣體輔助射出裝置322、氣體產生機323 200937479 以及空氣壓縮機324，其中，該射出成型機321可容置有 耐電弧材料，使該耐電弧材料以及氣體可同時注入模具 • 33中，當然，該耐電弧材料可以為上述實施例中熱可塑 : 性材料或熱固性材料以及含有水合化無機物填充之熱可 塑性材料或熱固性材料； 步驟E、進行裁切步驟，如第十圖所示，藉由一裁切 單元34於連接單元42進行裁切，如第二圖所示，以形成 過電流保護裝置結構，而該承載單元露出包覆體21係形 ❹ 成第一、第二電極23、24。 另外，該步驟D中氣體輔助射出成型步驟係可配合有 共射出系統，亦即該氣體輔助射出成型單元係至少包含 有：共射出成型機、氣體輔助射出裝置、氣體產生機以及 空氣壓縮機，藉由共射出成型機中容置有耐電弧材料以及 一般材料，使成型之包覆體21形成有内層211以及外層 212，如第三圖所示，該内層211可以為耐電弧材料，而 該外層212則可以為一般包覆材料。 〇 值得一提的是，本發明相較於習有係具有下列功效： 1、 本發明之包覆體係為耐電弧材料，該包覆體可吸 收該熔絲架構單元炫斷所產生之熱量並抑制電弧之產生。 2、 本發明之耐電弧材料可以為含有二分子結晶水之 氫氧化鎂填充之熱可塑性材料或熱固性材料，當包覆體溫 度須達到340°C才會釋放出結晶水，較適用於目前之無鉛 錫系統，一般無鉛錫熔點約為210〜230°C，且該含有二分 子結晶水之氫氧化鎮之财熱性及财電弧性均較佳。 200937479 3、該熔絲架構單元與包覆體間係設有至少一氣體容 置之空間，使該熔絲架構單元與包覆體非直接接觸，使該 • 熔絲架構單元通電後所產生之熱源不會經由包覆體熱傳 ； 導而散逸，以確保達到特定電流或特定溫度而導致高溫熔 斷，進而確實保有電路保護之效果。 本發明之技術内容及技術特點巳揭示如上，然而熟悉 本項技術之人士仍可能基於本發明之揭示而作各種不背 離本案發明精神之替換及修飾。因此，本發明之保護範圍 ® 應不限於實施例所揭示者，而應包括各種不背離本發明之 替換及修飾，並為以下之申請專利範圍所涵蓋。 【圖式簡單說明】 第一圖係為習有過電流保護元件之結構示意圖。 第二圖係為本發明中過電流保護裝置結構之結構示意圖。 第三圖係為本發明中過電流保護裝置結構之另一結構示 意圖。 〇 第四圖係為本發明中熔絲架構單元之另一結構示意圖。 第五圖係為本發明中導線架於沖壓成型單元進行沖壓之 結構不意圖。 第六圖係為本發明中導線架沖壓成型後之結構示意圖。 第七圖係為本發明中熔絲架構單元焊接於各承載單元間 之結構示意圖。 第八圖係為本發明中包覆體射出成型於導線架之結構示 意圖。 200937479 第九圖係為本發明中氣體輔助射出成型單元之結構示意 圖。 • 第十圖係為本發明中導線架於裁切單元進行裁切之結構 示意圖。 【主要元件代表符號說明】 過電流保護元件1 保險絲本體11 ® 保險絲包覆體12 第一電極13 第二電極14 過電流保護裝置結構2 包覆體21 内層211 外層212 熔絲架構單元22 〇 第一電極23 第二電極24 空間25 氣體251 耐電弧絕熱材料26 沖壓成型單元31 氣體輔助射出成型單元32 射出成型機321 12 200937479 〇 氣體辅助射出裝置322 氣體產生機323 空氣壓縮機324 模具33 裁切單元34 導線架4 承載單元41 連接單元42200937479 IX. Description of the Invention: [Technical Field] The present invention provides an overcurrent protection device and a method for manufacturing the same, and a device thereof, and more particularly, a device that can surely maintain the structure of the overcurrent protection device to achieve a specific current or a specific temperature The structure of an overcurrent protection device that causes a high temperature to be blown to block the protection effect of excess current, a manufacturing method thereof and a device thereof. 〇 [Prior Art] Fuses are used to protect circuits or electrical installations in electrical circuits from excessive electrical current or excessive voltages that can cause damage to precision electronic equipment. Therefore, the fuse is an indispensable electronic component. Conventional fuse devices have a coil or fuse material and are sealed in a body made of hard glass, ceramic or other insulator material. An inert gas or an arc-resistant filler is filled in the insulating tube. The two ends of the pipe body are respectively conductors, and the electric conductors are connected with the welding points on the circuit board to enable current to pass through the fuse. When the instantaneous current exceeds the predetermined current value, the fuse material will be blown by the high temperature due to the heat generated by the instantaneous excessive current, thereby forming an open circuit, so that excessive current does not flow into the circuit, thereby protecting the circuit and the electrical equipment from being protected. damage. When the fuse device of such a structure is used under a large current (240A) and a large voltage (2250V), a large amount of energy is generated instantaneously, which causes a high heat to be generated when the fuse is dissolved, so that the surrounding medium rapidly expands, causing the tube to burst; At the same time, an arc is generated, which makes it extremely easy to burn surrounding electronic components and damage expensive system equipment. 200937479 Therefore, the conventional fuse device has a heavy emphasis on suppressing arcs in its construction and manufacturing methods, such as US Patent Publication No. 6507264, 5572181, -5923239, 6507265, 5812046, 5596306, etc., but its process is relatively complicated; An overcurrent protection component of the publication No. 200727319, as shown in the first figure, the overcurrent protection component 1 includes: a fuse body 11 and a fuse cover 12, wherein the fuse body 11 extends respectively at both ends The first and second electrodes 13 and 14 and the fuse covering body 12 is composed of a polymer material, so that the fuse body 12 can absorb the overcurrent protection element when the current is overcurrent. The fuse body 11 fuses the generated heat and suppresses the generation of an arc. However, in reality, when the fuse body 11 is energized to generate a heat source, the part of the heat source may pass through the fuse body due to the contact of the fuse body 11 with the fuse body 12. 12 heat conduction and dissipation 'When the set excess current passes through the fuse body 11, the fuse body 11 cannot reach a specific current or a specific temperature and is blown at a high temperature, thereby failing to achieve the circuit protection effect of blocking the excess current, and the electric device is The electronic circuit is damaged or burned. SUMMARY OF THE INVENTION The main object of the present invention is to provide an overcurrent protection device structure that can reliably protect the structure of the overcurrent protection device from a specific current or a specific temperature and cause a high temperature to be blown to block the excess current. Manufacturing method and device. In order to achieve the above object, the overcurrent protection device structure of the present invention, the main 6 200937479 is provided with a fuse structure unit in a covering body, and the fuse frame unit extends to the outside of the cladding body to form a first, The second electrode is subjected to a gas-assisted injection molding step during the manufacturing process, so that at least one space for gas accommodation is disposed between the fuse frame unit and the covering body, and the heat source generated after the fuse frame unit is energized It does not dissipate through the heat conduction of the cladding to ensure that a certain current or a specific temperature is reached and the high temperature is blown, thereby ensuring the effect of circuit protection. ® [Embodiment] The features of the present invention can be clearly understood by referring to the detailed description of the drawings and the embodiments. The structure of the overcurrent protection device and the manufacturing method thereof and the device thereof are provided, wherein the structure 2 of the overcurrent protection device is mainly provided with a fuse structure unit 22 in a covering body 21 as shown in the second figure. The fuse frame unit 22 is a copper wire or a copper alloy wire having a length of 10 mm and a diameter of 0.13 mm, and is sequentially plated with a silver layer of 10//m thickness and a tin layer of 6#πι thickness. The first and second electrodes 23 and 24 are formed at the two ends of the fuse frame unit 22 and extending to the outside of the covering body 21, wherein at least one space 25 is disposed between the fuse frame unit 22 and the covering body 21. The space 25 may be further filled with a gas 251 such as an inert gas such as nitrogen or helium. The coating body 21 may be an arc resistant material, and the arc resistant material may be a thermoplastic material or a thermosetting material, wherein the thermoplastic material comprises: (a) a crystalline polymer material: polyethylene, polypropylene, polyperfluorocarbon Ethylene, Nylon 12, Nylon 6, Nylon 66, Nylon 6T, Nylon 9T, Poly Pair 200937479 butylene phthalate phthalate, poly(p-phenylene dicarboxylate) molecular polymer, ethylene copolymer side polymerization V:; Material: acrylonitrile-butadiene-stuppy ethylene ternary total =: two r resin, poly-poly:: propyl, styrene; = residual acid: acryl resin, poly-based Ο 、, secret The oily (4) may be an epoxy resin, a polystyrene, a urea resin, a Melamine containing water rr: two = or: rr; an inorganic substance, for example, a tri-molecular junction = body 21 may also be formed therein. The oxidized town of crystal water; of course, the inner layer of the coating may be the outer layer 212, as shown in the third figure, the material is coated, so that the outer layer 212 can be a cost of 0 The use of the arc material further reduces the overcurrent of the present invention and is assisted by gas-assisted In the second embodiment, the covering body 21 outside the arc-resistant material 22 is used, and the space 25 covered between the fuse frame units 21 is formed in the f-type manner to form the fuse frame unit 22 and the covering body simultaneously. The structure of the current protection device is in the heat generated by the overcurrent and inhibits the electricity from being absorbed by the fuse frame unit 22 to melt the wire structure unit 22 and the package, and the space 25 can The refining and setting body 21 is not in direct contact, so that the heat source of the fuse structure 200937479 unit 22 is not dissipated by the heat conduction of the cladding body 21 to ensure that the fuse frame unit 22 can be caused by a specific current or a specific temperature to cause a high temperature-fuse And further, the circuit protection effect of blocking the excess current is achieved; in addition, the fuse structure unit 22 may be further coated with the arc-resistant thermal insulation material 26, as shown in the fourth figure. The structure of the overcurrent protection device of the present invention The manufacturing apparatus comprises at least: a stamping unit, a welding unit, a gas-assisted injection molding unit, a cutting unit, and a conveying unit disposed between the units, and the manufacturing unit The following steps are sequentially performed: Step A, providing a lead frame; Step B, performing a press forming step, using the press forming unit 31 to form the lead frame 4 with a plurality of carrying units 41, and connecting the carrying units 41 The connecting unit 42 is as shown in the fifth and sixth figures; Step C, a fuse frame unit 22 is disposed between the carrying units 41, as shown in the seventh figure, is melted by a welding unit The wire frame unit 22 is soldered and fixed to the load bearing units 41; 〇Step D, performing a gas-assisted injection molding step, using a gas-assisted injection molding unit to cover the fuse frame unit 22 and a portion of the load bearing units 41 by injection molding The cover body 21 is as shown in the eighth figure, and the space between the fuse frame unit 22 and the cover body 21 is at least one gas 251. Please refer to the figure IX at the same time. The press-formed lead frame 4 is placed in a mold 33, and a gas-assisted injection molding step is performed. The gas-assisted injection molding unit 32 includes at least: an injection molding machine 32, a gas auxiliary injection device 322, and a gas. a life machine 323 200937479 and an air compressor 324, wherein the injection molding machine 321 can accommodate an arc resistant material, so that the arc resistant material and the gas can be simultaneously injected into the mold 33. Of course, the arc resistant material can be the above embodiment. Medium heat moldable: a material or a thermosetting material and a thermoplastic material or a thermosetting material filled with a hydrated inorganic material; Step E, performing a cutting step, as shown in FIG. 10, by a cutting unit 34 at the connecting unit 42 The cutting, as shown in the second figure, forms an overcurrent protection device structure, and the carrying unit exposes the covering body 21 to form the first and second electrodes 23, 24. In addition, the gas-assisted injection molding step in the step D may be combined with a common ejection system, that is, the gas-assisted injection molding unit includes at least: a common injection molding machine, a gas auxiliary injection device, a gas generator, and an air compressor. The formed coating body 21 is formed with an inner layer 211 and an outer layer 212 by accommodating an arc resistant material and a general material in the common injection molding machine. As shown in the third figure, the inner layer 211 may be an arc resistant material. The outer layer 212 can be a general covering material. It is worth mentioning that the present invention has the following effects as compared with the conventional system: 1. The coating system of the present invention is an arc resistant material, and the covering body can absorb the heat generated by the fuse unit unit to smash and Suppress the generation of an electric arc. 2. The arc-proof material of the present invention may be a thermoplastic material filled with magnesium hydroxide containing two molecules of crystal water or a thermosetting material. When the temperature of the coating body reaches 340 ° C, the crystal water is released, which is more suitable for the present. In the lead-free tin system, the melting point of the lead-free tin is generally about 210 to 230 ° C, and the heat and the arcing property of the hydroxide containing the two molecules of crystal water are better. 200937479 3. The space between the fuse frame unit and the covering body is provided with at least one gas accommodating space, so that the fuse frame unit and the covering body are not in direct contact, so that the fuse frame unit is energized. The heat source does not pass through the heat transfer of the coating body; it is dissipated to ensure that a certain current or a specific temperature is reached, and the high temperature is blown, thereby ensuring the circuit protection effect. The technical content and technical features of the present invention are disclosed above, but those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention is not limited by the scope of the invention, and is intended to cover various alternatives and modifications without departing from the scope of the invention. [Simple description of the diagram] The first diagram is a schematic diagram of the structure of the overcurrent protection component. The second figure is a schematic structural view of the structure of the overcurrent protection device in the present invention. The third figure is another structural schematic of the structure of the overcurrent protection device of the present invention. 〇 The fourth figure is another structural diagram of the fuse structure unit in the present invention. The fifth figure is not intended to be a structure in which the lead frame is stamped in a press forming unit. The sixth figure is a schematic structural view of the lead frame after the stamping and forming of the present invention. The seventh figure is a structural schematic view of the fuse frame unit soldered between the load bearing units in the present invention. The eighth drawing is a schematic view of the structure in which the covering body is injection molded on the lead frame in the present invention. 200937479 The ninth diagram is a schematic view of the structure of the gas-assisted injection molding unit of the present invention. • The tenth figure is a schematic view of the structure in which the lead frame is cut by the cutting unit in the present invention. [Main component representative symbol description] Overcurrent protection component 1 Fuse body 11 ® Fuse body 12 First electrode 13 Second electrode 14 Overcurrent protection device structure 2 Cover 21 Inner layer 211 Outer layer 212 Fuse frame unit 22 One electrode 23 Second electrode 24 Space 25 Gas 251 Arc-resistant thermal insulation material 26 Stamping forming unit 31 Gas-assisted injection molding unit 32 Injection molding machine 321 12 200937479 〇 Gas-assisted injection device 322 Gas generator 323 Air compressor 324 Mold 33 Cutting Unit 34 lead frame 4 carrying unit 41 connecting unit 42