1223288 玖、議明說明（l ) 【發明所屬之技術領域】 本發明是有關於一種電感元件及其製造方法，特別是 指一種在一線圈外部包覆一包覆體所組成之電感元件及製 造方法。 【先前技術】 -般電感元件的構造設計，會隨所需求之特性與規格 :頻率、f流、體積、電感值...等的差異而有所不同，如 第-、二圖所示之習知電感元件構造，是包含有由導磁材 ίο 料如鐵合金所製成之-包㈣10，及一被包套在該包套 體10内之線圈13。1223288 (1) [Technical Field of the Invention] The present invention relates to an inductive element and a method for manufacturing the same, and particularly to an inductive element composed of a coil covered with a covering body and manufacturing the same method. [Previous technology]-The structural design of general inductor components will vary with the required characteristics and specifications: frequency, f-current, volume, inductance value, etc., as shown in Figures 2 and 2 The conventional inductance element structure includes a package 10 made of a magnetically conductive material such as an iron alloy, and a coil 13 enclosed in the package body 10.
槽 該包套體10包括有可一下一上對應蓋合之一底座U -頂板12。該底座u具有—由其一頂面往下凹陷之容 m ’及一直立地設立在該容槽U1中央處之軸柱ιι〇 15 。該容槽ill具有二側開口端112。該頂蓋12概略成平 板狀’具有二由其-頂面兩相反側往下凹陷之間隔凹槽 121 °亥頂盍12對應盍合在該底座11上之製造方式，是 抓用在頂蓋12與底座u接合處以鐵心膠塗佈黏結，而將 該二構件黏接成一體。 該線圈13具有一由一長條爲平狀導線等半捏地沿一 中心軸線彎繞預定圈數而成之繞圈部131，及二分別由該 繞圈部m兩端往外延伸之延伸部132。組裝時^繞圈： ⑶是在頂蓋12黏合於底座n以前，先對應容置在該底 座η之容槽⑴内，並軸裝套合在底座u之軸柱ιι〇外 部，而該二延伸部132是一高一低地分別對應穿出該容槽 5 20-- 玖、發明旨兌明（2 ) ⑴之该等側開口端112，接著便可藉由前述頂蓋12勘合 找底座11頂©，而將線目13时限位在頂蓋12與底 座U間。又，如第二圖所示，該二延伸部132之外端， 可視需要往上並相向彎折地貼覆在頂蓋12之該二凹 5 121内。 曰 上述習知電感元件之製造過程中，除了該包套體ι〇 之底座11與頂蓋12所進行的點膠黏合加工，會造成其作 業較為麻煩不利於大量生產並增加成本以外，其線圈、13 套裝在底座11之容槽111㈣設置構造，由於線圈13以 10套合方式容置在底座11與頂蓋12間，難免會存在空隙， 而兩側開口蝠112更是-無法避免的導磁缺隙，因此除了 谷易產生振動與噪音外，並會造成較大的磁損，且電感的 口口貝因素（Quality Factor，簡稱q值）會下降。 【發明内容】 因此’本發明之目的’即在提供一種包覆體與線圈間 完全不會存在空隙且方便於大量生產之電感元件及其製造 方法。 於是，本發明電感元件之製造方法所製造出的電感 凡件，疋具有一線圈及—包覆在該線圈外部之包覆體， 20 該線圈具有-由-長條導線f繞預定圈數而成之繞圈部 ，及二分別由該繞圈部兩端往外延伸之延伸部，該製造 方法包含：⑷將該線圈放置在一由導磁材料製成之底座 上。（B)將該底座放置在由—上模與一下模對應蓋合所界 定出之-容裝空間的-下端部，使線圈之二延伸部受夹 6 1223288 玖、發明說明（：3 ) 持定位於上、下模間。及（c)將含有鐵合金粉末之流態包 覆流體’射入並充滿該容裝空間的一上端部内，以凝結 形成填充密滲於該底座上與繞圈部中且包覆於二者上方 之一固態結覆層，而由該底座與該結覆層共同組結該包 5 覆體。 【實施方式】 本發明之前述以及其他技術内容、特點與優點，在以 下配合參考圖式之較佳實施例的詳細說明中，將可清楚的 明白。 參閱弟二、四圖，本發明第一實施例之製造方法所製 造出的電感7L件2具有一線圈21，及一包覆在該線圈21 外部之包覆體22。該線圈21具有—由—長條扁平狀導線 等半徑地沿一中心軸線彎繞預定圈數而成之繞圈部2ιι， 及二分別由該繞圈部211兩端往外延伸之延伸部212。該 匕覆體22是由-上-下之-結覆層23與一底座24無間 隙地結合一體所構成，而將該線圈21之繞線部211固定 包覆於包覆體22内部。 如第五圖所示本發明第一實施例藉以達成上述電感元 件製造方法之製造模且包令右一捃 咬供八已3有下杈3,及一用來對應壓 20 合在該下模3頂面之上模4。 該下模3呈水平長片狀板體，具有一橫向延伸之下基 ，壁3卜及多數相鄰接地由該下基壁爿之一頂面往上同體 延伸的長方框形下圍壁32，藉以界定出多數開口朝上之 下模穴33,為使圖式較為清楚明瞭，本實施例中僅以該 7 1223288 玖、發明說明（4 ) 下模3具有兩個下模穴3 3為例作說明，值設計上並不以 此為限。 每一下模穴33上皆可供放置該預先由導磁材料如鐵 合金粉末壓鑄所製成之底座24。該底座24具有一由其一 頂面往下凹陷之容槽241，及一直立地設立在該容槽241 中央處之軸柱242,該容槽241具有二側開口端243。前 述線圈21之繞圈部211是容置在該底座24之容槽241内 ，並套合在該軸柱242外部，而線圈21之該二延伸部 212是分別對應穿出該容槽241之該等側開口端242。 ίο 15 2〇 : 每一下圍壁32上皆可供前述線圈21之延伸部212跨 置其上，且每一下圍壁32具有平行之前、後壁段321、 322及一連接於前、後壁段321、322兩末端間之側壁段 323 ’如述之下模穴33便是由該下圍壁32與下基壁31所 共同界定出’該前、後壁段321、322皆具有一前後延伸 地由其一頂面往下凹陷之下定位槽324、325，該二下定 位槽324、325具有與前述線圈21之延伸部212配合的長 方截面’使線圈21之一延伸部212可分別水平跨置在 該二下定位槽324、325上，該二側壁段323與前壁段 321 4南’且設計上該後壁段322之高度較該前壁段321 為往上突伸，使該二下定位槽324、325為一低一高，此 一设5十疋為了因應線圈21在跨置時其二延伸部212是呈 一高一低水平延伸狀態。 該上模4呈可與前述下模3對應蓋合之長片狀板體， 具有一橫向延伸之上基壁41，及多數相鄰接地由該下基 8： 1223288 玖、發明說明（5 ) 壁41之一底面往下同體延伸的長方框形上圍壁42。該上 基J 41具有一貫穿其頂、底面用來射入所述包覆體。之 結覆層23的射入孔411。每一上圍壁42具有平行之前、 後壁段421、422，及二連接於前、後壁段421、422兩末 端間之側壁段423，並由該上圍壁42與上基壁41共同界 疋出開口朝下之上模穴43，且上圍壁42之形狀是與前 述下模3之下圍壁31形成可對應蓋合之互補形狀，亦即 該上圍壁42之該等側壁段423與前壁段421突出程度相 同’僅該後壁段422之突出程度較小。 ίο 配合第六圖所示，當前述下模3之該等下圍壁32上 白放置有底座24與線圈21時，可接著將上模4對應蓋合 在下模3頂面，此時藉上模4之該等上圍壁42，分別密 抵壓合在下模3之該等下圍壁32上，而利用治具(圖未示 出）將每一線圈21之二延伸部212分別夾持定位於所對應 上、下圍壁42、32之前壁段421、321間與後壁段422、 322間，此時並由上、下模4在每一上、下圍壁π、μ 間’共同界^出-由上、下模穴43、33冑通而成之容裝 空間5，該底座24與線圈21便是容置在該容裝空間5的 一下端部内。 15 如第七圖所示，在各底座24與線圈21容置定位於上 :下模4、3㈤以後，接著將含有鐵合金粉末所製成之流 態包覆用流體，以金屬射出成型的方式，由上模*之射入 孔411射入並充滿該容裝空間5上端部内，以凝結形成包 覆於底座24與線圈21上方之ι態結覆層23。:處包= 9 1223288 玖、發明說明（6 ) 流體可由鐵合金粉末流體加上 助机作用之溶劑及一些膠結Slot The cover body 10 includes a base U-top plate 12 which can be closed and correspondingly closed. The base u has a capacity m ′ recessed downward from a top surface thereof, and a shaft column ιι 15 set upright at the center of the capacity groove U1. The receptacle ill has two open ends 112. The top cover 12 is roughly flat and has two spaced recesses 121 which are recessed downwardly from two opposite sides of the top surface. The top cover 12 corresponds to the manufacturing method of the base 11 and is grasped on the top cover. The joint between 12 and the base u is coated and bonded with iron core glue, and the two components are bonded into a whole. The coil 13 has a winding portion 131 which is formed by bending a predetermined number of turns along a central axis with a long flat wire and the like, and two extension portions extending outward from both ends of the winding portion m. 132. Assembling around the circle: ⑶Before the top cover 12 is adhered to the base n, it is correspondingly accommodated in the receiving groove ⑴ of the base η, and is shaft-fitted and fitted on the outside of the shaft post ι of the base u. The extension 132 is a high-low ground corresponding to each of the side open ends 112 that pass through the groove 5 20-- 玖, the invention purpose (2) ⑴, and then the base 11 can be found by the aforementioned top cover 12 Top ©, and limit the time of the line 13 between the top cover 12 and the base U. In addition, as shown in the second figure, the outer ends of the two extension portions 132 may be bent upward and opposite to each other to be covered in the two recesses 5 121 of the top cover 12 as needed. In the manufacturing process of the above-mentioned conventional inductance element, in addition to the glue bonding process of the base 11 and the top cover 12 of the cover body ι0, it will cause its operation to be more troublesome and is not conducive to mass production and increase costs. And 13 are set in the receiving groove 111㈣ of the base 11 to provide a structure. Since the coil 13 is accommodated between the base 11 and the top cover 12 in a 10-fit manner, there will inevitably be a gap, and the open bat 112 on both sides is an unavoidable guide. Magnetic gaps, in addition to valleys are prone to vibration and noise, and will cause large magnetic losses, and the quality factor (q value) of the inductor will decrease. [Summary of the Invention] Therefore, the "object of the present invention" is to provide an inductor element and a method for manufacturing the same, which have no gap between the cover and the coil and are convenient for mass production. Therefore, the inductors manufactured by the manufacturing method of the inductive element of the present invention have a coil and a covering body that is wrapped on the outside of the coil. 20 The coil has-a-long wire f wound around a predetermined number of turns. The completed winding portion and two extension portions respectively extending outward from the two ends of the winding portion. The manufacturing method includes: placing the coil on a base made of a magnetically conductive material. (B) The base is placed at the lower end of the -accommodating space defined by the corresponding cover of the upper mold and the lower mold, so that the extension of the coil 2 is clamped 6 1223288 玖, Description of the invention (3) Positioned between the upper and lower molds. And (c) injecting a fluid coating fluid containing ferroalloy powder into an upper end portion of the containing space to form a filling and densely infiltrate the base and the winding portion and cover the two. A solid-state cladding layer, and the base and the cladding layer jointly form the package 5 cladding body. [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention will be clearly understood in the following detailed description of preferred embodiments with reference to the drawings. Referring to the second and fourth figures, the inductor 7L piece 2 manufactured by the manufacturing method of the first embodiment of the present invention has a coil 21 and a covering body 22 covering the outside of the coil 21. The coil 21 has a winding portion 2m made of a long flat wire and a predetermined number of turns along a central axis, and two extension portions 212 extending from both ends of the winding portion 211 outward. The dagger covering body 22 is composed of an upper-lower-junction covering layer 23 and a base 24 without gaps, and the winding portion 211 of the coil 21 is fixed and covered inside the covering body 22. As shown in the fifth figure, the first embodiment of the present invention is used to achieve the above-mentioned manufacturing method of the manufacturing method of the inductive element manufacturing method, including the right one to bite, three to have a branch 3, and a corresponding pressing 20 to fit in the lower mold. 3 顶 面上 模 4. The lower mold 3 is a horizontally long plate-shaped body with a laterally extending lower base, and the wall 3 and most adjacent grounds extend from the top surface of one of the lower base wall niche to the same body extending upwards. The wall 32 defines a plurality of openings 33 facing upward and downward. In order to make the drawing clearer, this embodiment only uses the 7 1223288 玖. Description of the invention (4) The lower mold 3 has two lower mold cavities 3 3 is taken as an example for explanation, and the value design is not limited to this. Each of the lower cavities 33 can be provided with a base 24 made in advance by die-casting of a magnetically permeable material such as iron alloy powder. The base 24 has a receiving groove 241 recessed downward from a top surface thereof, and a shaft post 242 standing upright at the center of the receiving groove 241. The receiving groove 241 has two open ends 243 on both sides. The winding portion 211 of the coil 21 is received in the receiving slot 241 of the base 24 and fits outside the shaft post 242. The two extension portions 212 of the coil 21 respectively pass through the receiving slot 241.等 边 开端 端 242。 The side open end 242. ίο 15 2〇: Each lower surrounding wall 32 can be extended by the extension 212 of the aforementioned coil 21, and each lower surrounding wall 32 has parallel front and rear wall sections 321, 322, and one connected to the front and rear walls. The side wall section 323 between the two ends of the sections 321 and 322 'As described below, the lower cavity 33 is defined by the lower surrounding wall 32 and the lower base wall 31' The front and rear wall sections 321 and 322 have a front and rear The lower positioning grooves 324 and 325 are recessed downwardly from one top surface thereof, and the two lower positioning grooves 324 and 325 have a rectangular cross-section that cooperates with the extension portion 212 of the coil 21, so that one of the extension portions 212 of the coil 21 can Horizontally straddle the two lower positioning grooves 324 and 325, respectively, and the two side wall sections 323 and the front wall section 321 are 4 'south, and the height of the rear wall section 322 is designed to project upward from the front wall section 321. The two lower positioning grooves 324 and 325 are made one low and one high, and this one is set at 50 疋 in order to respond to the fact that the two extension portions 212 of the coil 21 are extended in a high and low level when the coil 21 is straddled. The upper mold 4 is a long sheet-shaped plate body which can be correspondingly covered with the aforementioned lower mold 3, and has a laterally extending upper base wall 41, and most of the adjacent grounds are formed by the lower base 8: 1223288 发明, description of the invention (5) One of the walls 41 has a rectangular parallelepiped upper surrounding wall 42 extending downwardly from the bottom. The upper base J 41 has a top and a bottom surface penetrating through the top base 41 for shooting into the covering body. The injection hole 411 of the junction cladding layer 23. Each upper wall 42 has parallel front and rear wall sections 421 and 422, and two side wall sections 423 connected between the two ends of the front and rear wall sections 421 and 422. The upper wall 42 and the upper base wall 41 are in common. The boundary opening is directed downward to the upper mold cavity 43, and the shape of the upper surrounding wall 42 is a complementary shape corresponding to that of the lower surrounding wall 31 of the aforementioned lower mold 3, that is, the side walls of the upper surrounding wall 42 The protruding degree of the segment 423 is the same as that of the front wall segment 421 'only the protruding degree of the rear wall segment 422 is small. ίο As shown in the sixth figure, when the base 24 and the coil 21 are placed on the lower surrounding walls 32 of the aforementioned lower mold 3, the upper mold 4 can then be correspondingly covered on the top surface of the lower mold 3, and borrowed at this time The upper surrounding walls 42 of the mold 4 are respectively tightly pressed against the lower surrounding walls 32 of the lower mold 3, and the two extension portions 212 of each coil 21 are clamped by using a jig (not shown). Positioned between the corresponding upper and lower surrounding walls 42 and 32 before the wall sections 421 and 321 and the rear wall sections 422 and 322. At this time, the upper and lower molds 4 are in each of the upper and lower surrounding walls π and μ ' The common circle is a container space 5 formed by the upper and lower mold cavities 43 and 33 being opened. The base 24 and the coil 21 are contained in the lower end of the container space 5. 15 As shown in the seventh figure, after each base 24 and the coil 21 are housed and positioned on the upper side: after the lower molds 4 and 3㈤, the fluid coating fluid made of iron alloy powder is then injected into the metal by injection molding. From the injection hole 411 of the upper mold *, the upper end of the accommodating space 5 is injected and filled, and a state-forming junction coating layer 23 covering the base 24 and the coil 21 is formed by condensation. : Office package = 9 1223288 发明, description of the invention (6) The fluid can be iron alloy powder fluid plus a solvent to help the machine and some cementation
劑所製成，由該等射入孔411矣十Λ L 射入上、下模4、3間之容 I空間5上端部内，且密填It is made of the agent, and the injection holes 411 矣 Shi Λ L are injected into the space between the upper and lower molds 4, 3, and the upper end of the space 5 is tightly packed.
昇〇兩於底座24上及繞圈部 211中’使各底座24盘绩圓ο】^ A ^ …綠圈21之繞圈部211被事後凝結 成固悲之結覆層23所充塞包覆，進而結合成一體。 ^著更甚者，可選擇地烘㈣等結合—體之底座Μ 、線圈21與結覆層23 $、 1定、、°设層23硬化定型，如此便 可製成所要之電感元件2，而所制 而所製成之電感元件2中之結 覆層23僅佔整體包覆體22 ίο J #知，本貫施例中該結 復層23的體積約佔整體包 #产产〜 復體22的20%〜30%，相對地 该底座24的體積約佔整體 忐#从活β 匕復體22的70%〜80%，故此 覆層23僅佔包覆體22小部份體積。 又’值得一提的是，垃田丄h 電感元件2,可Μ Λ 肖本貫施例製造方法所製成之 15 材；柿 3 &座24與結覆層23採用不同特性的 材枓，使電感元件2能針對 行㈣ 材枓條件的限制，製造出 又早 士来s、—人i 百设&式材料之包覆體22， 此類禝合式材料所可提供 八文果，可砰見於本案發明人前 尸^又冲之公告第49379〇號 。 设&式電感器」新型專利案 20 此外，為了整體線圈21 AT# 3 a# ^ ^ 疋位的而要，可在線圈21置 卜衩3時，便藉由加工 且 第丄I m σ 所預设之二播塊6(可見於 弟^、、七圖），阻擋於線圈21 見於 使後續作韋，Μ ,, ^ °亥一延伸部212末端，以 便只作業在射入結覆層23 部212受处覆> „ & ϋ θ避免線圈21之二延伸 覆層23㈣動推擠影響而前後位移。 10 1223288 玖、發明說明（7 ) 另本貫&例所製成之電感元件2的二延伸部2丨2末 2，可另外進行彎製加工，而往上並相向彎折貼覆至包覆 妝22的丁頁面，&彎折狀態與前述第二圖所示相同，當然 配合使此-需求，另可在上模4之上基板41底面搭配設 置往下突出之部位，以便在包覆體22頂面形成對應之凹 槽，在此不另以圖式作顯示。 ίο 15 由本實施例上述製造方法可知，在製造過程中確實不 需要進行如習知方法所進行的黏合加工之組裝作業，因此 可降低製造成本並方便於大量生產，而且所製成的電感元 件2由於其包覆體22由結覆層23與底座24無間隙地 將線圈21之繞圈部211包覆其間，繞圈部2ιι與包覆體 22間不會存在空隙，因此可避免產生振動與噪音、減少 磁損，及提升電感的Q值。而在製造過程中，該線圈Μ 亦能被穩定地定位，使其與模具内壁的距離充分隔開而固 定，確保導磁體（包覆體22)的規袼厚度。 如第八圖所示，本發明第二實施例之製造方法所欲製 造電感7G件所採用的線圈21與前述實施例不同，線圈Μ 疋由長條圓線狀導線彎繞而成，且該線圈2 i具有一由一 長條圓線狀導線彎繞預定圈數而成之繞圈部2丨丨、二分別 由ό亥繞圈部211之兩端往外延伸的延伸部2丨2，及二分別 由該等延伸部212之末端往下同向延伸的彎折部213。 參閱第九、十圖，為了因應線圈21形狀的差異，本 實施例之製造模具中，該下模3之下圍壁32的前、後側 壁段321、322,更分別具有分別由下定位槽324、325往 11 20 ., 1223288 玖、發明說明、（8 ) 下延伸之側定位槽326、327，使線圈21之該二彎折部 213相向側可分別併抵於該二側定位槽326、327，而更能 確保線圈21之中心軸線的垂直穩定狀態。 當前述下模3之該等下圍壁32上皆放置有底座24與 5線圈21時，可接著將上模4對應蓋合在下模3頂面，即 第十圖所不狀態，藉上模4之該等上圍壁42分別密抵壓 合在下模3之該等下圍壁32上，而將每一線圈Μ之二延 伸邛212分別夾持定位於所對應上、下圍壁42、32之前 壁段421、321間與後壁段422、322間，該底座24與線 10 圈21同樣疋容置在該容裝空間5下端部内。 如第十一圖所示，在各底座24與線圈21容置定位於 上、下杈4、3間以後，接著將含有鐵合金粉末所製成之 態包覆用流體，由上模4之射人孔411射人並充滿該容 裝二間5上端部内，以凝結形成包覆於底座24與線圈Μ 15 上方之固態結覆層23。 歸納上述，本發明之製造方法藉由鐵合金粉末所製成 之結覆層23 -體成型包覆在底座24與線圈21頂部，使 所製成結合一體之包覆體22與線圈21間，不會存在空隙 ，而可有效提升所製成的電感元件的品質，故確實能達到 2〇 <發明之目的。 准以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 乾圍及發明說明書内容所作之簡單的等效變化與修飾，皆 應仍屬本發明專利涵蓋之範圍内。 12 1223288 ίο 15 20 .c 玖、發明說明（9 ) 【圖式簡單說明】 第一圖是一習知電感元件的立體分解圖； 第二圖是該習知電感元件的組合剖視圖； 第三圖是本發明之製造方法的第一較佳實施 之一電感元件的立體圖； 表成 第四圖是第三圖中該電感元件側視剖面圖； ^五圖1製造模具之簡略立體分解圖，說明本發明 该第一較佳實施例之製造方法； 第六圖是第五圖中該製造模具的一組合右侧剖視圖， 說明一線圈放置於-底座内並受模具失持定 間内； 谷衣工 第七圖是一類似於第六圖之視圖 射入該容裝空間内之結覆層包覆； 第八圖疋本發明之製造方法的第 之一電感元件的立體圖； 第九圖是一製造模呈之鳄 ，、之間略立體分解圖，說明本發明 弟一車乂佳貫施例之製造方法；第^是第九圖中該製造模具的—組合右側剖視圖， ;二'圈放置於—底座内並受模具夾持定位在-容襄空 間内；及 第十-圖是一類似於第十圖之視圖，說明該線圈頂面 被射入該容裝空間内之結覆層包覆。 說明該線圈頂面被 .較佳實施例所製成 13 1223288 玖、發明說明（10 ) 【圖式之主要元件代表符號簡單說明】 2* - ♦ ••電感元件 323- ♦ ·- 側壁段 21 ♦ * ♦.線圈 324〜325 · 下定位槽 211 * ♦•繞圈部 326〜327 ♦ 侧定位槽 212 * ••延伸部 33…… 下模穴 213 * ••彎折部 4…… 上模 21· · …包覆體 41 ·…· 上基壁 23 * * …結覆層 4ΐι·… 射入孔 24· ♦ ♦底座 42 ♦•… 上圍壁 241 * •.容槽 421，… 前壁段 242 · •，轴柱 422-… 後壁段 243 * ••側開口端 423·… 側壁段 3… …下模 424〜425 ♦ 上定位槽 31 ♦， …下基壁 43 ♦ 上模六 32 * * * ·下圍壁 5..... 容裝空間 321 ♦ ••前壁段 6+ ‘《 擋塊 322， …後壁段 14Rising two on the base 24 and in the winding portion 211 'make each base 24 round.] ^ A ^… The winding portion 211 of the green circle 21 is stuffed and covered with a solid coating layer 23 afterwards. , And then combined into one. ^ Furthermore, the combination of the body base M, the coil 21 and the cover layer 23 $, 1 set, and the set layer 23 can be optionally baked, so that the desired inductance element 2 can be made, However, the junction coating layer 23 in the manufactured inductor element 2 occupies only the entire cladding body 22. It is known that the volume of the junction cladding layer 23 in the present embodiment accounts for approximately the entire package. 20% to 30% of the body 22, in contrast, the volume of the base 24 accounts for about 70% to 80% of the total body 22, so the coating 23 only accounts for a small part of the volume of the body 22. It's also worth mentioning that the inductive element 2 in the field can be made of 15 materials made by the manufacturing method of the embodiment of the SCH; the persimmon 3 & seat 24 and the covering layer 23 use materials of different characteristics, so that The inductive element 2 can produce a coating 22 of the s, ren, and other types of materials in accordance with the restrictions of the materials and conditions of the industry. Such composite materials can provide eight fruits, which can be banged. See Announcement No. 49379〇 of the former corpse of the inventor of this case. Design & type inductor "new patent case 20 In addition, for the whole coil 21 AT # 3 a # ^ ^ position is required, when the coil 21 is set to 衩 3, it can be processed and the 丄 I m σ Preset No. 2 broadcast block 6 (see Figure VII, Figure VII), blocked by the coil 21 Seen at the end of the subsequent Wei, M ,, ^ ° 1 extension of the end 212, so as to work only in the injection coating 23 The part 212 is covered by the process > „& ϋ θ to prevent the coil 21 bis extension cover 23 from being pushed and pushed back and forth to move back and forth. 10 1223288 发明, description of the invention (7) In addition, the inductance element made by the & example The two extensions 2 of 2 and 2 at the end 2 can be additionally bent, and bent upwards and oppositely to the Ding page covering the makeup 22, and the bending state is the same as that shown in the second figure above. Of course, in order to meet this requirement, the bottom surface of the upper substrate 41 on the upper mold 4 can also be provided with a protruding portion in order to form a corresponding groove on the top surface of the covering body 22, which is not shown in the drawings. ίο 15 It can be known from the above manufacturing method of this embodiment that, in the manufacturing process, it is really unnecessary to perform the bonding as performed by the conventional method. Processing and assembly operations can reduce manufacturing costs and facilitate mass production. In addition, the manufactured inductor element 2 can wrap the winding portion 211 of the coil 21 without the gap due to the covering 22 of the covering element 22 and the base 24. During this period, there will be no gap between the coiled part 2m and the cover 22, so vibration and noise can be avoided, magnetic losses can be reduced, and the Q value of the inductance can be improved. In the manufacturing process, the coil M can also be stabilized. The ground is positioned so that the distance from the inner wall of the mold is sufficiently separated and fixed to ensure the regular thickness of the magnet guide (the covering body 22). As shown in FIG. 8, the manufacturing method of the second embodiment of the present invention intends to manufacture an inductor. The coil 21 used in the 7G part is different from the foregoing embodiment. The coil M 疋 is formed by winding a long round wire, and the coil 2 i has a predetermined number of turns by winding a long round wire. The loop portions 2 丨 丨, two extension portions 2 丨 2 extending outward from both ends of the loop winding portion 211, and two bent portions 213 extending downward from the ends of the extension portions 212 in the same direction, respectively. Please refer to the ninth and tenth figures in order to respond to the difference in the shape of the coil 21 In the manufacturing mold of this embodiment, the front and rear side wall sections 321 and 322 of the surrounding wall 32 below the lower mold 3 have respectively from the lower positioning grooves 324 and 325 to 11 20., 1223288 玖, description of the invention, (8) The side positioning grooves 326 and 327 extending downward, so that the two bent portions 213 of the coil 21 are opposite to each other and can abut against the two side positioning grooves 326 and 327, respectively, and the vertical center axis of the coil 21 can be more ensured. When the bases 24 and 5 coils 21 are placed on the lower surrounding walls 32 of the lower mold 3, the upper mold 4 can then be correspondingly covered on the top surface of the lower mold 3, that is, the state shown in the tenth figure. The upper enclosure walls 42 of the upper mold 4 are closely pressed against the lower enclosure walls 32 of the lower mold 3, respectively, and the two extensions 212 of each coil M are clamped and positioned at the corresponding upper and lower enclosures, respectively. The walls 42 and 32 are between the front wall sections 421 and 321 and the rear wall sections 422 and 322, and the base 24 is accommodated in the lower end of the accommodation space 5 like the wire 10 circle 21. As shown in the eleventh figure, after each base 24 and the coil 21 are accommodated and positioned between the upper and lower branches 4, 3, then the coating fluid in the state made of iron alloy powder is shot by the upper mold 4 The manhole 411 penetrates and fills the upper end of the containing room 5 to form a solid junction coating 23 covering the base 24 and the coil M 15 by condensation. Summarizing the above, the manufacturing method of the present invention covers the base 24 and the top of the coil 21 by forming a covering layer 23 made of iron alloy powder, so that the integrally formed covering body 22 and the coil 21 are not formed. There will be a gap, which can effectively improve the quality of the manufactured inductor element, so it can indeed achieve the purpose of 20 < invention. Those mentioned above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made in accordance with the patent application and the description of the invention , All should still fall within the scope of the invention patent. 12 1223288 ίο 15 20 .c 发明 Description of the invention (9) [Schematic description] The first picture is an exploded perspective view of a conventional inductor element; the second picture is a combined sectional view of the conventional inductor element; the third diagram It is a perspective view of an inductive element in one of the first preferred embodiments of the manufacturing method of the present invention; the fourth figure is a side sectional view of the inductive element in the third figure; The manufacturing method of the first preferred embodiment of the present invention; FIG. 6 is a right cross-sectional view of a combination mold of the manufacturing mold in FIG. 5, illustrating a coil placed in a base and held in a fixed space by the mold; The seventh figure is a view similar to the sixth figure, shot into the cladding layer in the containing space; the eighth figure is a perspective view of the first inductance element of the manufacturing method of the present invention; the ninth figure is a A slightly exploded perspective view of the manufacturing mold, which illustrates the manufacturing method of the first embodiment of the present invention; Figure ^ is the sectional view of the right side of the manufacturing mold in the ninth figure; In—in the base and fixed by the mold It is located in the Rongxiang space; and the tenth figure is a view similar to the tenth figure, showing that the top surface of the coil is covered by the cladding layer projected into the containing space. Explain that the top surface of the coil is made by the preferred embodiment. 13 1223288 发明, description of the invention (10) [Simplified description of the main elements of the diagram] 2 *-♦ •• Inductive element 323- ♦ ·-Side wall section 21 ♦ * ♦. Coils 324 to 325 · Lower positioning groove 211 * ♦ • Winding portion 326 to 327 ♦ Side positioning groove 212 * • • Extension 33 ... Lower mold cavity 213 * • • Bending portion 4 ... Upper mold 21 ···· Covering body 41 ···· Upper base wall 23 * *… Seal layer 4ΐ ··· Injection hole 24 · ♦ ♦ Base 42 ♦ •… Upper wall 241 * • Capacitor 421… Front wall Section 242 · •, shaft post 422-… Rear wall section 243 * •• Side open end 423 ·… Side wall section 3…… Lower mold 424 ~ 425 ♦ Upper positioning groove 31 ♦,… Lower base wall 43 ♦ Upper mold 6 32 * * * · Bottom wall 5 ..... Capacity space 321 ♦ •• Front wall section 6+ '《Stop 322,… Back wall section 14