544378 五、發明說明（1 ) 相關申請案之交叉參者 本申鑄案係請求於2001年9月13日提出申請，案號為 第60/322,052號標題為”用於對表面安裝技術保險絲增加 範圍更換的保險絲夾具（FUSE CLIPS FOR ADDING FIELD REPLACEMENT TO SMT FUSES)，，，以及於2002年 5 月16日提出申請，申請案第60/3 81，834號標題為”用於對表 面安裝技術保險絲增加範圍更換的保險絲夾具（FUSE CLIPS FOR ADDING FIELD REPLACEMENT TO SMT FUSES)" 之優先權，該整個内容於此併入本案以為參考資料。 發明之背熹 本發明係有關於表面安裝技術，特定言之，係有關於 用於使能夠更換表面安裝元件的失具，諸如保險絲。 現今高密度的電子裝置係能夠藉由使用表面安裝技 術（SMT)而製成，其中小的獨立元件係自動地配置在印刷 電路板的焊貧充填焊塾（solder-paste charged pads)，而最終 的”負載”電路板係接著加熱在每一電氣接點處藉由焊料回 流而對焊接產生作用。在高自動化速度下組裝該等電路 板，必要以是所配置之元件係為小的並且儘可能為重量輕。 於該等總成中頻繁使用的一類型元件係為保險絲。一 或更多的保險絲典型地係提供用以對所生產的元件增加過 電流保護以及使用者的安全性。具有良好的配置特性以及 與電路板焊墊嚙合之平面接頭之小型、重量輕的保險絲係 可從複數之製造廠商處購得。該等保險絲在表面安裝技術 (SMT)總成之製程中完美地運作，但其之附裝構件並未考 4 544378 五、發明說明（2 ) 慮迅速完成的範圍更換應為在元件於使用當中時易於發生 之可更正的電氣故障。到目前為止，對該等保險絲增加範 圍更換的能力無論是購買在配置於電路板之前預負載入一 較大的保險絲支架的保險絲，抑或是藉由代價高的構件， 諸如手動插入的，，實際狀況之後，，將其加入於一安裝的保險 絲支架係皆為需要的。適於此目的所需之保險絲支架典型 地包括二夾具與保險絲之端接頭嚙合。該等係安置於一塑 膠的基座或是外罩中，該基座或是外罩的幾何形狀在回流 附袭至電路板時能有效地保護保險絲接頭與嚙合夾具不致 發生潮濕。該-支架的尺寸與重量使更換時間緩慢並浪費 電路板的可用空間，該二狀況皆非為令人滿意的結果。、 本务明之一目的在於提供一種夾具其係使能夠較 小、較輕並且為可更換的表面安裝元件總成，諸如保險絲， 並具有較小的尺寸、較快的安放與更換以及較低的單位價 格的伴隨之優點。 $等與其他的目的藉由一供表面安裝元件所用之夾 具而貫現，其包括一底壁、與第一與第二隔開之側壁以及 自底壁直立的一後壁。側壁間之間隔係稍微小於元件之寬 度，因此當元件配置在側壁内時，側壁在元件上施以一力 氏土側壁與後壁之面向離開元件的表面其上具有可 丈干接的材料，而面向元件的表面係為非可焊接的。 根據本發明之特定的觀點，底壁、側壁與後壁其每一 係以傳導性之非可焊接的金屬所製成，並且止動裝置係向 五、發明說明（3 ) 内地導向側壁對元件施以更大之壓力以維持更佳的電氣接 觸並有助於將元件炎緊及固持在夾具中，止動裝置係配置 在側壁之前邊緣上。 根據其他的觀點，底壁、侧壁與後壁係互相一體成形 的，該夾真係以彈性的材料所製成，後壁係向内彎曲並配 置調整襯墊在焊接夾具時防止元件受到焊接。 根據另一觀點，使用夾具固持具有端蓋的保險絲。於 此情況下，後壁之彎曲表面與止動裝置間的間隔係稍微小 於端蓋的長度，因此後壁施以一彈力用力推進端蓋靠著止 動裝置。 較佳地，夾具係與具有端蓋的一表面安裝保險絲一同 使用。就此用途而言，提供二夾具。每一夾具包括一底壁、 與苐一與燊一隔開之側壁以及自底壁直立的一後壁，側壁 間之間隔係稍微小於端蓋之寬度，因此當端蓋配置在側壁 内時，侧壁在端蓋上施以一力量。 有利地，每一夾具的底壁、側壁與後壁係個別以傳導 性之非可焊接的金屬所製成，每一夾具的底壁、側壁與後 壁的面向離開位在夾具内之端蓋的表面其上具有可焊接的 材料’而面向元件的表面上係為非可焊接的材料。配置調 整概墊在焊接夾具時防止端蓋受到焊接。夾具同時可配置 止動裝置以有助於將保險絲定位在夾具内並提供增加的電 氣接觸。 本發明之其他的特性及優點由以下的說明及參考伴 隨之圖式而變得顯而易見的。 五、發明說明（4 ) 弟1圖係為一立面圖，顯示一對失具單元其係包含一 根據本發明之特定肩理的夾具用於固持-元件； 第2圖係為第1圖之夾具的平面圖； 第3圖係為第1圖之夾具的端視圖；以及 第4圖係為可構成第u圖之保險絲夾具的一金屬模 片。 、 較佳具體實放例之詳細許'明 筝考第1-3圖，其中顯示一對夾具1〇用於固持一元件， 諸如一表面安裝技術（SMT)保險絲n，其係包括一主體η 與端蓋13。所示之夾具1〇係安裝在一印刷電路板上。夾具 10係間隔開以致保險絲n可緊貼地藉由夾具1〇所固持，以 下將作更為詳細地說明。 每一夾具10包括一底壁16、側壁18與一後壁20。較佳 地，每一後壁20係向内地彎曲。 每一底壁16、側壁18與後壁20係以一具傳導性、抗腐 I虫、彈性的、可焊接的金屬合金所製成，諸如Inc〇nel 625。 有利地，如第4圖中所示，每一夾具可藉由一傳統的模衝作 業從一具有複數之構成夾具模衝單元23的帶條22，在藉由 沿著彎曲線24、26及28彎曲之後所製成。 於模衝之前，帶條22之正面，會變成夾具之外部以及 底部，係以一金屬底層，諸如銅，加以電鍍以提升黏著性 並接著覆蓋電鑛一適合的可焊接合金，諸如錫。在構成夾 具10之後，如此使得夾具10之底部與外部為可焊接的，同 五、發明說昀（5 ) 2防止内部表面受到焊接。夾具1〇之所有周圍邊緣係為受 剪切的邊緣。因此，該等邊緣係同時為非可焊接的。於底 口P處之邊緣30因而進一步地作為阻礙焊料橋接至端蓋13。 側壁1 8之橫向間隔係稍微小於保險絲端蓋13之寬 度，因此保險絲11可緊貼地收納在侧壁18之間，並藉由橫 向的彈簧夾緊力，於第2圖中以箭頭Fl表示，固持於其中。 側壁之前邊緣包括截斷切口32使能夠向内地面向停 的或止動虞置3 4，藉由在截斷切口 3 2的任一側上彎曲前 ^緣而構成。於具體實施例中所示，每一夾具具有四止動 裝置34，每一側壁18上有二個。止動裝置34增強保險絲夾 具1〇與保險絲端蓋13的電氣接觸。更特定言之，該等多重 接點抵銷介於夾具10與保險絲蓋13間因使用電阻率高於銅 的Inconel而導致的電阻增加。 此外，止動裝置34與後壁20共同作動用以提供夾具1〇 ^保險絲蓋13的確定位置。此係藉由後壁2〇之向内的彎曲 一縱向的彈力匕所達成，推進保險絲蓋13的前邊緣向 月’J罪著四止動裝置34定出一垂直平面。 止動裝置34與後彈簧壁20係作為鉗子其間具有一段 距離稍微小於蓋13的長度，從而將蓋13固定於其間。此係 π成因為蓋13具有-段極為一致的長度，不像保險絲i ^ 身係個別件而有顯著的變化。 每夾具10之獨立的夾緊動作容許將蓋13正好地定 位靠在止動裝置34之平面並以足夠的力量加以固定，以致 正常的操作並將總成安置在電路板4〇上。夾具1〇互相 544378544378 V. Description of the invention (1) Cross-participants in related applications This application was filed on September 13, 2001, and the case number was 60 / 322,052 and the title was "Addition to Surface Mount Technology Fuse FUSE CLIPS FOR ADDING FIELD REPLACEMENT TO SMT FUSES, and filed an application on May 16, 2002, with application number 60/3 81,834 entitled "For Surface Mount Technology Fuses Increase the priority of FUSE CLIPS FOR ADDING FIELD REPLACEMENT TO SMT FUSES ". The entire content is hereby incorporated into this case for reference. BACKGROUND OF THE INVENTION The present invention relates to surface-mount technology, and more specifically, to a missing piece, such as a fuse, for enabling surface-mount components to be replaced. Today's high-density electronic devices can be made by using surface-mount technology (SMT), where small independent components are automatically placed on solder-paste charged pads of a printed circuit board, and eventually The "load" circuit board is then heated at each electrical contact to effect soldering by reflowing the solder. To assemble these boards at high automation speeds, it is necessary to arrange the components as small and as light as possible. One type of component frequently used in these assemblies is a fuse. One or more fuses are typically provided to add overcurrent protection to the components produced and user safety. Small, lightweight fuses with good configuration characteristics and planar connectors that engage with circuit board pads are available from multiple manufacturers. These fuses work perfectly in the process of surface mount technology (SMT) assembly, but the attached components have not been tested. 4 544378 V. Description of the invention (2) The scope of replacement that is considered to be completed quickly should be in the component in use It is prone to correctable electrical faults. So far, the ability to replace these fuses with increased range, whether it is the purchase of a fuse preloaded into a larger fuse holder before being placed on the circuit board, or through costly components such as manual insertion, After the actual situation, it is necessary to add it to an installed fuse holder. The fuse holder required for this purpose typically includes two clamps that engage the terminal end of the fuse. These are placed in a plastic base or cover, and the geometry of the base or cover can effectively protect the fuse connector and the engagement fixture from moisture when reflow is attached to the circuit board. The size and weight of the bracket make the replacement time slow and waste the available space of the circuit board. Neither of these conditions is a satisfactory result. One of the objectives of the present invention is to provide a fixture that enables smaller, lighter, and replaceable surface mount component assemblies, such as fuses, with smaller dimensions, faster placement and replacement, and lower The accompanying advantages of unit prices. The et al. And other objects are achieved by a fixture for surface mounting components, which includes a bottom wall, side walls spaced from the first and second walls, and a rear wall standing upright from the bottom wall. The distance between the side walls is slightly smaller than the width of the element. Therefore, when the element is arranged in the side wall, the side wall applies a force soil side wall and the rear wall facing away from the surface with a material that can be measured. The component-facing surface is non-weldable. According to a specific aspect of the present invention, each of the bottom wall, the side wall, and the back wall is made of a conductive non-weldable metal, and the stopper is directed to the inward direction of the invention (3). Greater pressure is applied to maintain better electrical contact and to help tighten and hold the component in the fixture. The stopper is placed on the front edge of the side wall. According to other viewpoints, the bottom wall, the side wall and the back wall are integrally formed with each other. The clip is really made of elastic material. The back wall is bent inward and an adjustment pad is arranged to prevent the component from being welded when welding the fixture. . According to another aspect, a clamp is used to hold a fuse with an end cap. In this case, the distance between the curved surface of the rear wall and the stopper is slightly smaller than the length of the end cover, so the rear wall exerts an elastic force to push the end cover against the stopper. Preferably, the clamp is used with a surface mount fuse having an end cap. For this purpose, two fixtures are provided. Each fixture includes a bottom wall, a side wall separated from the first and second sides, and a rear wall standing upright from the bottom wall. The interval between the side walls is slightly smaller than the width of the end cover. Therefore, when the end cover is arranged in the side wall, The side wall exerts a force on the end cap. Advantageously, the bottom wall, side wall and rear wall of each clamp are individually made of conductive non-weldable metal, and the bottom wall, side wall and rear wall of each clamp faces away from the end cover located in the clamp. The surface has a solderable material thereon and the component-facing surface is a non-weldable material. An adjustment pad is configured to protect the end cap from welding when welding the fixture. The fixture can also be equipped with a stop to help position the fuse in the fixture and provide increased electrical contact. Other features and advantages of the present invention will become apparent from the following description and the accompanying drawings. V. Description of the invention (4) Figure 1 is a elevation view showing a pair of lost units which includes a fixture according to the present invention for holding a component; Figure 2 is Figure 1 A plan view of the jig; FIG. 3 is an end view of the jig of FIG. 1; and FIG. 4 is a metal die that can constitute the fuse jig of FIG. Detailed illustrations of the preferred concrete implementation examples of the 'Ming Zheng Test' Figures 1-3 show a pair of fixtures 10 for holding a component, such as a surface mount technology (SMT) fuse n, which includes a main body η With end cap 13. The jig 10 shown is mounted on a printed circuit board. The clamps 10 are spaced apart so that the fuse n can be closely held by the clamp 10, which will be described in more detail below. Each clamp 10 includes a bottom wall 16, a side wall 18 and a rear wall 20. Preferably, each rear wall 20 is curved inwardly. Each bottom wall 16, side wall 18 and rear wall 20 are made of a conductive, anti-corrosive, elastic, weldable metal alloy, such as Inconel 625. Advantageously, as shown in FIG. 4, each jig can be removed from a strip 22 having a plurality of jig die forming units 23 by a conventional die punching operation, along the bending lines 24, 26 and 28 made after bending. Prior to die stamping, the front side of the strip 22 becomes the exterior and bottom of the fixture. A metal substrate, such as copper, is electroplated to improve adhesion and then covered with a suitable solderable alloy such as tin. After the jig 10 is formed, the bottom and the outside of the jig 10 are weldable in the same way as in the fifth and fifth invention (5) 2 to prevent the inner surface from being welded. All peripheral edges of the jig 10 are sheared edges. Therefore, these edges are also non-weldable. The edge 30 at the bottom port P thus further acts as a barrier solder to bridge to the end cap 13. The lateral distance of the side wall 18 is slightly smaller than the width of the fuse end cover 13, so the fuse 11 can be tightly accommodated between the side walls 18, and indicated by the arrow Fl in the second figure by the lateral spring clamping force Hold on to it. The front edge of the side wall includes a truncated cut 32 to allow the stop or stop 34 to face inwardly, and is formed by bending the leading edge on either side of the truncated cut 32. As shown in the specific embodiment, each fixture has four stop devices 34 and two on each side wall 18. The stop device 34 enhances the electrical contact of the fuse holder 10 with the fuse end cover 13. More specifically, these multiple contacts offset the increase in resistance caused by using Inconel with a resistivity higher than that of copper between the clamp 10 and the fuse cover 13. In addition, the stopper device 34 and the rear wall 20 act together to provide a fixed position of the clamp 10 and the fuse cover 13. This is achieved by the inward bending of the rear wall 20 and a longitudinal elastic dagger. The front edge of the fuse cover 13 is pushed toward the moon'J to define a vertical plane against the four stops 34. The stopper 34 and the rear spring wall 20 serve as pliers with a distance slightly smaller than the length of the cover 13, thereby fixing the cover 13 therebetween. The reason for this is that the cover 13 has a very uniform length in the -segment, and unlike the fuse i ^, it has a significant change. The independent clamping action of each clamp 10 allows the cover 13 to be positioned exactly against the plane of the stopper 34 and fixed with sufficient force so as to operate normally and place the assembly on the circuit board 40. Jig 1〇 each other 544378
五、發明說明（6 ) 間不共同作動。共同作動僅發生在夾具1〇已安裝至電路板 4〇上之後，假若更換一具有一稍微不同長度的保險絲11的 狀況下。於此情況下，二焊接的夾具1〇間具有足夠的順從 性以補償保險絲長度上的變化，同時仍提供足夠的接觸與 固持力。假若新的保險絲11較短時，則當止動裝置34精微 才合上蓋邊緣時側壁會稍加開啟。假若新的保險絲丨1較長 時，則後彈簧20會軸向地開啟並且蓋邊緣會稍微自止動裝 置3 4後退。在4 一情況下，在最終接點處增加的力量會補 償由於稍微的不對正所造成之接觸面積的任何損失。 夾具的幾何形狀包括在保險絲蓋13之底邊緣與每一 夾具10之前、後開啟邊緣之間的調整襯墊36。當夾具1〇焊 接至其之印刷電路焊墊38時，該等調整襯墊36進一步地將 可焊接之保險絲蓋13與大部分液化的焊膏隔離。由於夾具 之所有的内部表面係為非可焊接的，所以即使當印刷電路 焊墊38所位在的電路板40暴露至回流溫度時保險絲蓋13之 焊料電鑛表面不致黏附至夾具。 位在夾具10之側壁18與後壁20之底座處，大的半徑42 容許形成大量的填角焊料44堅固地將夾具1〇附裝至個別的 電路焊墊38。 在使用中，夾具10在保險絲丨丨插入其中之前可焊接至 一印刷電路板40，或是保險絲U首先可與夾具1〇裝配接著 將總成焊接至印刷電路板4 〇成為一單元。 由於夾具10僅覆蓋著保險絲蓋丨3，所以可以簡單地藉 由將保險絲主體12自下方抬起從而施以一向上力量匕而執Fifth, the invention (6) does not work together. The joint operation occurs only after the fixture 10 has been mounted on the circuit board 40, if a fuse 11 having a slightly different length is replaced. In this case, the two soldered fixtures 10 have sufficient compliance to compensate for changes in the fuse length, while still providing sufficient contact and retention. If the new fuse 11 is short, the side wall will be opened slightly when the stopper 34 is closed until the edge of the cover is closed. If the new fuse 丨 1 is longer, the rear spring 20 will open axially and the edge of the cover will slightly retract from the stopper 3 4. In the 4 case, the increased force at the final contact will compensate for any loss of contact area due to a slight misalignment. The geometry of the fixture includes an adjustment pad 36 between the bottom edge of the fuse cover 13 and the front and rear opening edges of each fixture 10. When the fixture 10 is soldered to its printed circuit pads 38, the adjustment pads 36 further isolate the solderable fuse cover 13 from most of the liquefied solder paste. Since all internal surfaces of the jig are non-solderable, the solder ore surface of the fuse cover 13 does not adhere to the jig even when the circuit board 40 on which the printed circuit pad 38 is located is exposed to the reflow temperature. Located at the base of the side wall 18 and the rear wall 20 of the jig 10, a large radius 42 allows the formation of a large number of fillet solders 44 to securely attach the jig 10 to individual circuit pads 38. In use, the clamp 10 can be soldered to a printed circuit board 40 before the fuse is inserted therein, or the fuse U can be first assembled with the clamp 10 and then the assembly is soldered to the printed circuit board 40 as a unit. Since the clamp 10 only covers the fuse cover 3, it can be simply carried out by lifting the fuse body 12 from below to apply an upward force.
五、發明說明（7 ) 行更換，如第2圖中所示。在夾具10中插入一新的保險絲 時’執行相反的步驟並於相反的方向上施以一力量匕將保 險絲11插入。僅以夾具1 〇覆蓋端蓋丨3同時容許改良圍繞著 保險絲主體12的對流，有助於降低保險絲之溫度。 本發明之其他的優點包括： 1 ·大畺的夾具1 〇致使其提供附加的熱質量（亦即，瞬間 及熱）至保險絲11，容許保險絲丨丨在清除之前承受稍微較大 的短時間過負載。 2.使用個別的夾具1〇而非傳統式模塑支架，容許其可 用於長度變化的保險絲丨丨共用相同之尺寸與蓋13。 3·使用調整襯墊之幾何形狀，由非可焊接的金屬製成 並且焊料之固有的高表面張力防止熔態焊料不致在夾具10 回流附裝至電路板40時橋接至保險絲丨丨之可焊接蓋13。同 樣地可防止焊料不利地侵入夾具之彎曲區域。因此，不需 使用環繞的塑膠外罩作為焊料罩而損失整體尺寸。 4 ·將衣具1 〇附裝至電路板4 〇之焊料接合點4 4的品質係 可谷易又到檢驗。傳統地，模塑之塑膠支架典型地提供較 小的可焊接面積。其同時無法對大部分的固定接合點作視 覺檢查。 儘管本發明已相關於特定的具體實施例加以說明，但 複數種其他的變化與修改以及其他的用埠對熟知此技藝之 人士而5係顯而易見的。因此，較佳的是本發明並未由此 特定之揭路内容所限定，而僅藉由附加之申請專利範圍加 以限定。 544378 五、發明說明（8 ) * 元件標號對照 10.. ..夾具 26…·彎曲線 11.. ..保險絲 28....彎曲線 12.. ..主體 30....邊緣 13·· ..端蓋 32··.·截斷切口 16·· ..底壁 34.…止動裝置 18·· ..側壁 36....調整襯墊 20·· • •後壁· 38···•印屌ij電路焊塾 22.. ..帶條 40.…電路板 23·· ..模衝單元 42.…大的半徑 24·. ..彎曲線 44....填角焊料 115. Description of the invention (7) The line is replaced, as shown in the second figure. When inserting a new fuse in the jig 10 ', the reverse steps are performed and a force dagger is applied in the opposite direction to insert the fuse 11. Covering the end cap 3 only with the clamp 10 allows the improved convection flow around the fuse body 12 to help reduce the temperature of the fuse. Other advantages of the present invention include: 1. The large clamp 10 causes it to provide additional thermal mass (ie, instantaneous and thermal) to the fuse 11, allowing the fuse to withstand a slightly larger short time before it is cleared. load. 2. Use individual clamps 10 instead of traditional molded brackets, allowing them to be used for fuses with varying lengths 丨 丨 sharing the same size and cover 13. 3. The geometry of the adjustment pad is made of non-weldable metal and the inherent high surface tension of the solder prevents the molten solder from being bridged to the fuse when the fixture 10 is reflowed and attached to the circuit board. Cover 13. It also prevents the solder from inadvertently invading the curved area of the fixture. Therefore, there is no need to use a surrounding plastic cover as a solder cover and lose the overall size. 4 · The quality of the solder joints 4 4 that attach the clothes 10 to the circuit board 4 0 can be tested again. Traditionally, molded plastic stents typically provide a smaller solderable area. It also does not allow visual inspection of most fixed joints. Although the present invention has been described in relation to specific embodiments, a plurality of other variations and modifications and other uses will be apparent to those skilled in the art. Therefore, it is preferable that the present invention is not limited by the specific contents of the road-opening, but is limited only by the scope of the attached patent application. 544378 V. Description of the invention (8) * The reference of the component numbers is 10 .... clamp 26 .... bending line 11 .... fuse 28 .... bending line 12 ... body 30 .... edge 13 ... ···················································································································································································· possibleuring a problem ·· India ij circuit soldering 塾 22 ..... with strip 40 .... circuit board 23 ..... die punching unit 42 .... large radius 24 ..... bending wire 44 ... fillet solder 11