200845054 九、發明說明： 【發明所屬之技術領域】 本發明為一種具有熱保護功能的壓敏電阻，尤指一種 帶有自我失效保護功能；當遇到各種類型過電壓導致壓敏 電阻本體溫度異常昇高而失效時，具有自我保護功能的壓 敏電阻。 【先前技術】 壓敏電阻器以其優越的非線性伏安特性，廣泛使用於 線路5又備及元件的過電壓保護與浪湧吸收元件，不論壓 敏電阻器應用在電力線或電子線路，若各種類型的瞬=過 電壓頻繁出現，則壓敏電阻器就會頻繁動作來抑制過電壓 增幅和吸收釋放浪湧能量，以保護電器設備及元件，長此 以往則勢必會導致壓敏電阻器的性能劣化乃至失效。 再者，當壓敏電阻接受持續性過電壓時，壓敏電阻會 迅速局部擊穿導致起火燃燒現象，現有技術的壓敏電阻元 牛中八可具有熱保護功能，現有技術之具有熱保護功能 之壓敏電阻，一般係設有一貼附靠近壓敏電阻元件的熱熔 絲於電流迴路中，利用熱熔絲之熔點低於其餘構件的原 理，§過大電流通過而產生高溫時，高溫將熱熔絲燒毁而 形成斷路，因而達到熱保護功能。 、;、、丨而’由於現有技術之具有熱保護功能的壓敏電阻中 作為過熱保護結構的熱熔絲於過熱收縮形成斷路時，容易 因月b里未持續傳導到熱熔絲上，而導致熱熔絲無法持續收 細而再度形成通路，因此現有技術的熱熔絲的響應速度過 5 200845054 ‘k仍無法及時感測過高溫度而及時斷路，或者是耐受大電 流衝擊能力較弱容易失效，因此現有技術的帶失效2護之 壓敏電阻所具有之熱保護功能仍具有其缺陷。 再者，現有技術之具有熱保護功能的壓敏電阻，其一 般將熱熔絲及隸電阻^封裝在—起，料熱熔絲過熱 收縮形成斷路時，所產生的氣體膨脹或跳電產生的火花 等，均會破壞外層封膠而使得壓敏電阻内部元件向外噴灑 而影響到電流迴路中的其他元件，同_會產生極大的聲 響，無論壓敏電阻是裝設在何種裝置中，例如家電用品、 3 C電子產品等’突然產生的極大聲響都會讓使用者 驚嚇。 【發明内容】 有鑑於前述之現有技術的缺點’本發明係設計一種具 有熱保護功能的壓敏電阻’當電流迴路承受持續性過電壓 導致過熱狀況下，熱保護功能之壓敏電阻能及時反應而形200845054 IX. INSTRUCTIONS: [Technical Field] The present invention is a varistor having a thermal protection function, especially a self-failure protection function; when the various types of overvoltages are encountered, the varistor body temperature is abnormal. A varistor with self-protection when it rises and fails. [Prior Art] With its superior nonlinear volt-ampere characteristics, varistor is widely used in line 5 and overvoltage protection and surge absorbing components of components, regardless of whether the varistor is applied to power lines or electronic circuits. When various types of transients/overvoltages occur frequently, the varistor will frequently operate to suppress overvoltage increase and absorb and release surge energy to protect electrical equipment and components. In the long run, the performance of varistor will inevitably deteriorate. Even failed. Furthermore, when the varistor receives a continuous overvoltage, the varistor will rapidly break down locally and cause a fire phenomenon. The prior art varistor Yuanniu can have a thermal protection function, and the prior art has a thermal protection function. The varistor is generally provided with a thermal fuse attached to the varistor element in the current loop, and the melting point of the thermal fuse is lower than that of the remaining components. § When a large current passes to generate a high temperature, the high temperature will be hot The fuse is burned to form an open circuit, thus achieving thermal protection. Because the thermal fuse as the overheat protection structure in the varistor with thermal protection function of the prior art forms an open circuit when it is overheated and contracted, it is easy to be continuously conducted to the thermal fuse due to the month b. As a result, the thermal fuse cannot continue to be thinned and the path is formed again. Therefore, the response speed of the prior art thermal fuse is over 5 200845054 'k still unable to sense the excessive temperature in time and the circuit is broken in time, or the ability to withstand high current impact is weak. It is easy to fail, so the thermal protection function of the prior art varistor with fail-safe 2 still has its drawbacks. Furthermore, the varistor having the thermal protection function of the prior art generally encapsulates the thermal fuse and the resistor, and generates or breaks the heat generated by the heat fuse to form an open circuit. Sparks, etc., will destroy the outer sealant and cause the internal components of the varistor to be sprayed outwards to affect other components in the current loop. The same _ will produce a great sound, no matter what device the varistor is installed in, For example, household appliances, 3 C electronic products, etc. 'suddenly loud sounds will scare users. SUMMARY OF THE INVENTION In view of the foregoing disadvantages of the prior art, the present invention is designed to provide a varistor having a thermal protection function. When the current loop is subjected to a permanent overvoltage and causes overheating, the varistor of the thermal protection function can react in time. Shape
成斷路，且保料再形成料，以保護其餘電流迴路中電 子元件不至於毀損。 為達到上述的發明目的，本發明所採用的技術手段為 設計一種具有熱保護功能的壓敏電阻，其中包括： ·、、 -本體，其包含有一第一電極及一第二電極，第 第二電極分別貼附於本體兩側； 一絕緣墊片，其設於本體之第二電極上，絕緣 貫穿成型有一穿孔； t 電極上並與第一電極形 一第一導電接腳，其設於第一 6 200845054 成電連接； 一第二導電接腳，其設於絕緣墊片上； 端與第二導 孔與第二電 一熱溶絲，其設於絕緣塾片上，熱溶絲— 電接腳形成電連接，另一端藉由絕緣塾片之穿 極形成電連接。 本發明的優點在於，當壓敏電阻之本體承* 7K文持續性過 電壓導致過熱狀況下，由於熱熔絲與第二電極 91 賴*由端The circuit is broken and the material is re-formed to protect the electronic components in the remaining current loop from damage. In order to achieve the above object, the technical means adopted by the present invention is to design a varistor having a thermal protection function, including: -, - a body including a first electrode and a second electrode, second The electrodes are respectively attached to the two sides of the body; an insulating spacer is disposed on the second electrode of the body, and the through hole is formed with a through hole; the first electrode is formed on the electrode and the first electrode is shaped by a first conductive pin. a 6 200845054 is electrically connected; a second conductive pin is disposed on the insulating spacer; the end and the second guiding hole and the second electric heat-dissolving wire are disposed on the insulating cymbal, and the hot-dissolving wire is electrically connected The legs form an electrical connection and the other end is electrically connected by the penetration of the insulating segments. The invention has the advantages that when the body of the varistor is subjected to overheating due to the continuous overvoltage, the thermal fuse and the second electrode 91 are
緣接觸，熱熔絲能迅速熔融斷裂以形成斷路來保蠖電a、回 路中之電子元件不受損，且由於絕緣墊片的隔絕，而有L = 阻隔熔融後的熱熔絲與第二電極，並能持續傳熱至熱熔絲In the edge contact, the thermal fuse can be quickly melted and fractured to form an open circuit to protect the electric a, the electronic components in the circuit are not damaged, and due to the insulation of the insulating gasket, there is L = the thermal fuse after blocking the melting and the second Electrode and continuous heat transfer to the thermal fuse
上’使得熱熔絲斷路後仍持續受熱收縮，以防止再产' 接 導通。 X 再者，本發明可具有一支撐蓋蓋設於本體及絕緣墊 片，支撐蓋與絕緣墊片間形成有一密閉空間，利用支撐苔 耐高溫的特性，使得支撐蓋不受熱熔絲作動而破壞，H 撑蓋與絕緣墊片間所形成的空間具有吸音的功效，能將熱 溶絲作動時所產生的聲響吸收以避免影響使用者。 【實施方式】 以下配合圖式及本發明之較佳實施例，進一步闞述本 發明為達成預定發明目的所採取的技術手段。 凊參閱第一及二圖所示，本發明包含有一壓敏電阻本 體（10) (10，）、一絕緣墊片（2〇) (2〇，）、 第一導電接腳（3〇)、一第二導電接腳（4〇)、一 才欢測接腳（5 0 )、一熱炫絲（6 0 )及一支撐蓋（7 0 )。 7 200845054 請參閱第三、四、七及八A圖所示，前述之本體（1 〇 ) ( 1 0 ’）兩側分別貼附有一第一電極（1 2 ) ( i 2，） 與一第二電極（121) (121，），電極（12)(；[ 2 ’）（ 1 2 1 ) ( 1 2 1 ’）一 般為銀電極。 請參閱第三至六及八B圖所示，前述之絕緣墊片（2 〇) (20，）貼附於本體（1〇) (1〇，）之第二電極 (12 1) ( 1 2 1 ’）上，絕緣墊片（2 0 ) (2〇，） 上貫穿成型有一穿孔（2 1) (2 1，），絕緣墊片（2〇，） ⑩之穿孔（2 1，）内壁面可塗佈有銀層（2 1 1，），以使 絕緣塾片（2 〇，）之穿孔（2 1，）可導電； 在本發明的中，絕緣墊片（2 〇 )可由陶瓷材料所構 成’陶究絕緣墊片（2 〇 )之背側貼銀，利用燒銀的方式 將陶究絕緣墊片（2 0 )與第二電極（1 2 1 )相結合， 或利用一導電套筒（13)穿設並卡合於絕緣墊片（2〇) 之穿孔（2 1)中，導電套筒（丄3) 一端與第二電極（工 21)相互固定，藉此將陶瓷絕緣墊片（20)固定於本 體0)之第二電極（1 2 1)上，由於陶瓷材料本身 具有絕佳的導熱性，因此當壓敏電阻本體（1 〇 )受到較 大的能量而過熱時，陶瓷絕緣墊片（2〇)可吸收熱量而 作為能量緩衝體’尤其是當陶瓷絕緣墊片（2 〇 )利用燒 銀方式與第二電極（121)結合時，更能加速導熱效果； 在本發明中’絕緣墊片（2 〇，）亦可由高分子材料（例 如尼龍66 ( PA66 )、聚硫化二曱苯（pps )、液晶高分子 (LCP)等）所構成，高分子絕緣墊片（2 〇，）週緣延伸 8 200845054 成型有複數個扣爪（22，）’故藉由扣爪（22，）夹持 於本體（1〇,)週緣，而將高分子絕緣墊片（2〇，）固 定於本體（]〇，"）之莖一兩& , U )之弟一私極（121，）上，因此高分 子絶緣墊片（2 0 ’）的組裝程序相當簡單。 請參閱第七及八A圖所示，絕緣墊片（2 〇 ) ( 2 〇，） 之大小可與本體（1 Q) ( 1 ◦，）相同，或請參閱第九圖 所示，絕緣墊片（2 〇，，）小於本體（i 〇 )。 刚述之第一導電接腳（3〇)與本體（1〇) (1〇，） 之第一電極（；[2) (12)形成電連接，前述之第二導 電接腳（4 Q )設於絕緣墊片（2 Q ) ( 2 〇，）上，前述 之檢測接腳（50)與本體（1〇) (1〇，）之第二電極 (1 2 1 )( 1 2 1 )形成電連接，在本發明中，檢測接 腳（5 0 )可設於絕緣墊片（2 〇 )上，且與導電套筒（工 3)相接，以與第二電極2丄）相接，在本發明中， 檢測接腳（5 ◦)亦可設於絕緣墊片（2 〇，）與第二電極 (1 2 1 ’）之間。 前述之熱熔絲（6 0 )設於絕緣墊片（2 〇 ) ( 2 〇，） 上，且熱熔絲（60)分別與第二導電接腳（4〇)及第 一電極（121) (121’）形成電連接，藉此導通第一 導電接腳（40)及第二電極（121) (121，），且 熱熔絲（6 0 )與第二電極（；l 2 1 ) ( 1 2 1，）間透過 一焊點（6 1)形成電連接（請參閱第一圖所示），其中 焊點（6 1 )的熔點可小於或等於熱熔絲（6 〇 )的您點， 以加速熱熔絲（6 0 )受熱熔斷。 9 200845054 在本發明中（如第七圖所示），熱溶絲（6〇)可與 導電套筒（1 3)相接以與第二電極（1 2 1 )電連接、 如第八A圖所示，熱熔絲（6 0 )可貫穿絕緣墊片（2 〇，） 之穿孔（2 1’）以與第二電極（1 2 1，）電連接、或如 第八B圖所示，熱熔絲（6 0 )可與絕緣墊片（2 〇，）之 塗布有銀層（2 1 1 ’）的穿孔（2 1，）相接以與第二電 極（1 2 1 ’）電連接。 當壓敏電阻之本體（1〇) (1〇，）承受持續性過電 • 壓導致過熱狀況下，熱熔絲（6 0 )迅速熔融斷裂以形成 斷路來保護電流迴路中之電子元件不受損，由於熱熔絲（6 0)與第二電極（1 2 1) ( 1 2 1’）間僅藉由端緣接觸， 故能迅速形成斷路，且由於絕緣墊片（2 〇 ) ( 2 〇 5)的 隔絕，而有效阻隔熔融後的熱熔絲（6 〇 )與第二電極（工 2 1 )( 1 2 1 ’），以防止再度連接導通，再者，當熱溶 絲（6 0 )與第二電極（1 2 1 ) ( 1 2 1 ’）形成斷路後， 透過絕緣墊片（20) (20，）能持續將熱傳導至熱熔絲 鲁 （6 〇 )上，使得熱溶絲（6 0 )繼續受熱收縮，更能有 效防止再度連接導通。 前述之支撐蓋（7 0 )為阻燃性的耐高溫絕緣材料（例 如陶兗、高分子材料等），支撐蓋（7 0 )蓋設於本體（1 0 ) ( 1 〇，）及絕緣墊片（2 0 ) ( 2 0 ’）上，以保護 並加以固定各元件，支撐蓋（7 0 )與絕緣墊片（2 0 ) (2 0 ’）不相接觸並與兩者之間形成一密閉空間，當熱熔 絲（6 0 )熔融斷路時，會產生的氣體膨脹或跳電產生的 10 200845054 火化等，由於支撐蓋（7 〇)本身為阻燃性的耐高溫材料， 所以支撐蓋（7 0)不受火花等破壞，故支撐蓋（7〇) 的作用除了保護壓敏電阻的各元件外，則進一步保護電流 迴路中其他電子元件，且支撐蓋（70)與絕緣墊片（2 〇 )( 2 0 )間形成的空間用以吸收熱炫絲（6 〇 )作動 斷開瞬間所易導致跳電產生火花的***聲響，故可避免過 大的聲響對使用者所產生的不適。 如同般的電子元件，為了保護内部元件並有效隔絕 j乳’ 4參閱第十二圖所示，—般在本體（工〇 )及絕緣 蓋y〇)外會塗布一層封膠層（8〇)，以完全覆蓋支 樓蓋（70)及本體（1〇)，封膠層（8〇)可為環氧 樹脂等所屬技術領域中常用的材料，由於封膠層（8 〇 ) X 緣1 ( 7 〇 )外’則當封膠層（8 Q )因壓敏電阻 ^身溫度升高而變形時，藉由絕緣蓋（7◦)的阻擔而使 得封膠層（8 〇 )的變形不影響熱溶絲（6 〇 )的作動。 • 树明之壓敏電阻可為任何形狀，例如第一圖所示為 囡形’或如第十圖所示為方形’則本體（1〇，’，）、絕緣 墊片0”’）與支樓蓋（7 〇，，，）相對應為方形。 請參閱第十一圖所示，其為本發明其中一種製作方 法’首先提供一壓敏電阻本體（10)，其中本體（10) 兩側分別設有一第一電極（1 2 )及-第二電極（i 2 i )， 兩電極皆為銀電極，提供一陶竞絕緣塾片（2〇)，" 緣墊片（2 〇 ) 一側貼有銀片，絕緣墊片（2 〇 ):貫 牙成有—牙孔（2 1 )，利用燒銀方式結合絕緣塾片（2 11 200845054 〇)與第二電極（121)，將一第一導電接腳（3〇) 與第-電極（12)相接，再將―第：導電接㈧ 成於絕緣墊片（2 〇 )上，設置一熱溶絲（6 〇 )於絕緣 墊片（20)_L’且熱熔絲（6〇)分別與第二導電接腳 (4〇)及第二電極（1 2 1 )形成電連接，其中孰溶絲 ⑽）與第二電極（121)間藉由穿孔（21);成、:、 蓋設一支樓蓋（70)於本體（10)及絕緣塾片（20) 上，支樓蓋（7 〇 )與絕緣墊片（2 〇 )間形成有—空間， •、塗佈一封膠層（8 〇 )於支撑蓋（7 0 )及本體（丄 外部，以完全覆蓋支撐蓋（7〇)及本體（1〇)。 以上所述、僅是本發明的較佳實施例而已，並非對本 $明作任何形式上的限制，雖然本發明已以較佳實施例揭 露如亡，然而並非用以限定本發明，任何熟悉本專業的技 術人員，在不脫離本發明技術方案的範圍内，當可利用上 述揭不的技術内各作出些許更動或修飾為等同變化的等效 實施例，但凡是未脫離本發明技術方案的内容，依據本發 月的技術實質對以上實施例所作的任何簡單修改、等同變 化/、L飾，均仍屬於本發明技術方案的範圍内。 【圖式簡單說明】 第一圖為本發明第一實施例之立體外觀圖 第一圖為本發明第二實施例之立體外觀圖 2三圖為本發明第一實施例之部分元件立體外觀圖 第一四圖為本發明第二實施例之勒元件立體外觀圖 第五圖為本發明第一實施例之部分元件立體外觀圖 12 200845054 第 Q為本發明第二實施例之部分元件立體外觀圖 第七圖為本發明第一實施例之剖面圖 第八A圖為本發明第二實施例之剖面圖 第 V R 、 7 ΰ圖為本發明第三實施例之剖面圖 第九圖為本發明第四實施例之剖面圖 | 圖為本發明第五實施例之立體外觀圖 第+ 一 圖為本發 明之製造方法流程圖 I 一The upper part causes the thermal fuse to continue to undergo heat shrinkage after the circuit is broken to prevent re-production. Further, the present invention can have a support cover disposed on the body and the insulating spacer, and a sealed space is formed between the support cover and the insulating spacer, and the support cover is destroyed by the thermal fuse by the high temperature resistance of the support support. The space formed between the H-cap and the insulating spacer has the function of sound absorbing, and can absorb the sound generated when the hot-dissolving wire is actuated to avoid affecting the user. [Embodiment] Hereinafter, the technical means adopted by the present invention for achieving the intended purpose of the invention will be further described in conjunction with the drawings and preferred embodiments of the invention. Referring to the first and second figures, the present invention comprises a varistor body (10) (10,), an insulating spacer (2 〇) (2 〇,), a first conductive pin (3 〇), A second conductive pin (4〇), a test pin (50), a hot wire (60) and a support cover (70). 7 200845054 Please refer to the third, fourth, seventh and eighth diagrams. The first electrode (1 2 ) ( i 2,) and one are attached to the two sides of the body (1 〇) ( 1 0 '). The two electrodes (121) (121,), the electrodes (12) (; [ 2 ') ( 1 2 1 ) (1 2 1 ') are generally silver electrodes. Referring to Figures 3 to 6 and 8B, the aforementioned insulating spacer (2 〇) (20,) is attached to the second electrode (12 1) of the body (1〇) (1〇,) (1 2 1 '), the insulating gasket (2 0 ) (2〇,) is pierced with a perforation (2 1) (2 1,), insulating gasket (2〇,) 10 perforated (2 1,) inner wall surface It may be coated with a silver layer (21, 1) so that the perforations (2, 1) of the insulating bismuth (2 〇,) are electrically conductive; in the present invention, the insulating spacer (2 〇) may be made of a ceramic material. The back side of the ceramic insulating gasket (2 〇) is silver-plated, and the ceramic insulating gasket (20) is combined with the second electrode (1 2 1 ) by means of burning silver, or a conductive sleeve is used. (13) Threading and engaging in the perforation (2 1) of the insulating spacer (2〇), one end of the conductive sleeve (丄3) and the second electrode (Work 21) are fixed to each other, thereby using the ceramic insulating spacer (20) fixed on the second electrode (1 2 1) of the body 0), since the ceramic material itself has excellent thermal conductivity, when the varistor body (1 〇) is subjected to large energy and is overheated, the ceramic Insulating gasket (2〇) It can absorb heat as an energy buffer body', especially when the ceramic insulating gasket (2 〇) is combined with the second electrode (121) by means of burning silver, which can accelerate the heat conduction effect; In the present invention, the 'insulation gasket (2) 〇,) can also be composed of polymer materials (such as nylon 66 (PA66), poly(phenylene sulfide) (pps), liquid crystal polymer (LCP), etc., polymer insulation gasket (2 〇,) circumference extension 8 200845054 The plurality of claws (22,) are formed by being clamped to the periphery of the body (1〇,) by the claws (22), and the polymer insulating spacers (2〇,) are fixed to the body (ie, ") Stem one or two & U, the brother of a private pole (121,), so the assembly process of polymer insulation gasket (20') is quite simple. Please refer to Figures 7 and 8A. The insulating gasket (2 〇) ( 2 〇,) can be the same size as the body (1 Q) ( 1 ◦,), or please refer to the ninth figure, the insulating mat The slice (2 〇, ,) is smaller than the body (i 〇). The first conductive pin (3〇) just described is electrically connected to the first electrode (; [2) (12) of the body (1〇,), and the aforementioned second conductive pin (4 Q) Provided on the insulating spacer (2 Q ) ( 2 〇,), the aforementioned detecting pin (50) and the second electrode (1 2 1 ) (1 2 1 ) of the body (1〇) (1〇,) are formed. Electrical connection, in the present invention, the detecting pin (50) can be disposed on the insulating spacer (2 〇), and is connected to the conductive sleeve (work 3) to be connected to the second electrode 2) In the present invention, the detecting pin (5 ◦) may be provided between the insulating spacer (2 〇,) and the second electrode (1 2 1 '). The aforementioned thermal fuse (60) is disposed on the insulating spacer (2 〇) (2 〇,), and the thermal fuse (60) is respectively connected to the second conductive pin (4 〇) and the first electrode (121) (121') forming an electrical connection, thereby turning on the first conductive pin (40) and the second electrode (121) (121,), and the thermal fuse (60) and the second electrode (; l 2 1 ) ( 1 2 1,) An electrical connection is made through a solder joint (6 1) (see the first figure), where the melting point of the solder joint (6 1 ) can be less than or equal to the point of the thermal fuse (6 〇) To accelerate the thermal fuse (60) to be blown by heat. 9 200845054 In the present invention (as shown in the seventh figure), the hot-melt wire (6〇) can be connected to the conductive sleeve (13) to be electrically connected to the second electrode (1 2 1 ), such as the eighth A As shown, the thermal fuse (60) can penetrate the through hole (2 1 ') of the insulating spacer (2 〇,) to be electrically connected to the second electrode (1 2 1,) or as shown in FIG. The thermal fuse (60) may be connected to the perforation (2 1 ) of the insulating layer (2 〇,) coated with a silver layer (2 1 1 ') to be electrically connected to the second electrode (1 2 1 ') connection. When the body of the varistor (1〇) is subjected to continuous over-voltage and the over-voltage condition causes the thermal fuse (60) to melt and break rapidly to form an open circuit to protect the electronic components in the current loop from being protected. Loss, because the thermal fuse (60) and the second electrode (1 2 1) (1 2 1') are only contacted by the edge, so that an open circuit can be formed quickly, and because of the insulating spacer (2 〇) (2 〇5) is isolated, and effectively blocks the molten thermal fuse (6 〇) and the second electrode (2 2 1 ') (1 2 1 ') to prevent reconnection, and then, when hot-melt (6) 0) After forming an open circuit with the second electrode (1 2 1 ) (1 2 1 '), the insulating gasket (20) (20,) can continuously conduct heat to the thermal fuse Lu (6 〇) to make the hot solution The wire (60) continues to shrink by heat, which is more effective in preventing reconnection. The support cover (70) is a flame-retardant high-temperature insulating material (for example, ceramics, polymer materials, etc.), and the support cover (70) is disposed on the body (10) (1 ),) and the insulating mat. On the piece (20) (20', to protect and fix the components, the support cover (70) is not in contact with the insulating spacer (20) (20') and forms a In a confined space, when the thermal fuse (60) melts and breaks, it will generate gas expansion or electric shock. 10 200845054 Cremation, etc., because the support cover (7 〇) itself is a flame retardant high temperature resistant material, the support cover (7 0) is not damaged by sparks, etc., so the role of the support cover (7〇), in addition to protecting the components of the varistor, further protects other electronic components in the current loop, and supports the cover (70) and the insulating gasket ( The space formed between 2 〇) (20) is used to absorb the explosion sound of the hot wire (6 〇) which is easy to cause the spark to be generated by the flashing moment, so that the discomfort caused by the excessive sound to the user can be avoided. As in the case of electronic components, in order to protect the internal components and effectively isolate the j milk '4, as shown in the twelfth figure, a layer of sealant (8〇) is applied outside the body (worker) and the insulating cover y〇. In order to completely cover the branch cover (70) and the body (1〇), the sealant layer (8〇) may be a material commonly used in the technical field such as epoxy resin, due to the sealant layer (8 〇) X edge 1 ( 7 〇) outside 'When the sealant layer (8 Q ) is deformed due to the increase of the temperature of the varistor, the deformation of the sealant layer (8 〇) is not caused by the resistance of the insulating cover (7 ◦) Affects the action of hot melt wire (6 〇). • The varistor of Shuming can be any shape, for example, the figure shown in the figure is “囡” or as shown in the tenth figure, the body (1〇, ',), insulating spacer 0”') The floor cover (7 〇,,,) is correspondingly square. Please refer to the eleventh figure, which is a manufacturing method of the present invention. First, a varistor body (10) is provided, wherein both sides of the body (10) A first electrode (1 2 ) and a second electrode (i 2 i ) are respectively provided, and both electrodes are silver electrodes, and a ceramic insulating film (2〇) is provided, and the edge gasket (2 〇) Silver sheet on the side, insulating gasket (2 〇): the through hole is formed with the tooth hole (2 1 ), and the insulating cymbal (2 11 200845054 〇) and the second electrode (121) are combined by the method of burning silver. The first conductive pin (3〇) is connected to the first electrode (12), and then the “first: conductive connection (8) is formed on the insulating spacer (2 〇), and a hot-dissolving wire (6 〇) is disposed on the insulating pad. The sheet (20)_L' and the thermal fuse (6〇) are electrically connected to the second conductive pin (4〇) and the second electrode (1 2 1 ), respectively, wherein the ruthenium-solving wire (10) and the second electrode (121) )between By perforating (21); forming,:, covering a floor (70) on the body (10) and the insulating cymbal (20), between the branch cover (7 〇) and the insulating gasket (2 〇) Form a space, • Apply a layer of glue (8 〇) to the support cover (70) and the body (丄 outside to completely cover the support cover (7〇) and the body (1〇). The present invention has been described with respect to the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. In the scope of the technical solutions of the present invention, equivalent modifications may be made to the equivalent embodiments, and the equivalents of the technical solutions are not deviated from the technical solutions of the present invention. Any of the simple modifications, equivalent changes, and L decorations of the above embodiments are still within the scope of the technical solution of the present invention. [First Description of the Drawings] The first figure is a three-dimensional embodiment of the present invention. The first figure of the appearance drawing is the second embodiment of the present invention. 3 is a perspective view of a part of the first embodiment of the present invention. FIG. 4 is a perspective view of a second embodiment of the present invention. FIG. 8 is a cross-sectional view of a first embodiment of the present invention. FIG. 8A is a cross-sectional view of a second embodiment of the present invention. 7 is a cross-sectional view showing a third embodiment of the present invention. FIG. 9 is a cross-sectional view showing a fourth embodiment of the present invention. FIG. Figure I
二圖為本發明第一實施例增加封膠層後之剖面圖 【主要元件符號說明】 (1〇) (10，）（10，，，）本體 (1 2 ) ( 1 2，)第一電極 (12工）（121，）第二電極 (1 3 )導電套筒 (2 0 ) ( 2 〇，）（ 2 〇，，）（ 2 〇，，，）絕緣墊片 (2 1 ) ( 2 1 ’)穿孔 (2 1 1，）銀層 (2 2，）扣爪 (3 0 )第一導電接腳 4〇)第二導電接腳 (5 Q )檢測接腳 (6 0 )熱熔絲 (6 1 )焊點 (7 0 ) ( 7 〇，，，）支撐蓋 (8 〇 )封膠層 132 is a cross-sectional view of the first embodiment of the present invention after adding a sealant layer [Description of main components] (1〇) (10,) (10,,,) body (1 2 ) (1 2,) first electrode (12 workers) (121,) second electrode (1 3) conductive sleeve (2 0 ) ( 2 〇,) ( 2 〇,,) ( 2 〇,,,) insulating gasket (2 1 ) ( 2 1 ') Perforation (2 1 1,) Silver layer (2 2,) Detent (3 0) First conductive pin 4〇) Second conductive pin (5 Q ) Detection pin (60) Thermal fuse ( 6 1) Solder joint (7 0 ) ( 7 〇,,,) support cover (8 〇) sealant layer 13