587260 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明< ) 發明所屬的技術領域 本發明係關於一種使用於點燈用電源的反流變壓器； 特別是關於一種使用於用以點亮照明液晶顯示裝置的背面 的冷陰極燈的DC/AC換流器等的變壓器的構造。 先前技術 在擬點亮平面型冷陰極燈的反相電路中，爲了防止產 生亮度不均勻，在未接地反流變壓器的二次側電路而以浮 控狀態下使用。這時候，在反流變壓器的二次繞組的兩端 部，成爲交互地施加有1.5〜2.5KV的高電壓。因此，在該反 流變壓器中，須增大一次繞組與二次繞組之間的絕緣耐壓 〇 第8圖是表示習知的一次繞組與二次繞組之間的絕緣耐 壓較大的反流變壓器。在該反流變壓器，一次繞組3捲繞 於安裝有端子1的絕緣性捲線軸2的筒形捲軸2a，而二次繞組 4安裝於捲線軸2的下方。又，一對磁性體鐵心5，6從上下方 向夾住捲線軸2，並經由絕緣片7互相面對面而成爲形成閉 磁路的構造。 反流變壓器是被安裝於數位電子靜態照相機或8mm攝錄 影機等的攜帶機器的狹窄空間。所以必須將反流變壓器的 厚度構成數mm以下薄厚度。然而，如第8圖的習知反流變壓 器，是一次繞組3與二次繞組4形成高度方向地重疊的構造 之故，因而很難成爲薄型者。 繞組型反流變壓器時，一般低壓側的一次繞組的匝數 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4 - (t先I讀背面之注意事項再填寫本頁)587260 Printed by A7 B7, Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs 5. Description of the invention <) Field of the invention The present invention relates to a reflux transformer used in a lighting power source; in particular, it relates to a inverter used in a lighting source. A structure of a transformer such as a DC / AC converter that illuminates a cold cathode lamp on the back of a liquid crystal display device. Prior art In an inverter circuit intended to illuminate a flat-type cold-cathode lamp, in order to prevent uneven brightness, the secondary side circuit of an ungrounded inverter transformer is used in a floating control state. At this time, a high voltage of 1.5 to 2.5 kV is alternately applied to both ends of the secondary winding of the inverter transformer. Therefore, in this inverter transformer, it is necessary to increase the insulation withstand voltage between the primary winding and the secondary winding. FIG. 8 shows a conventional reverse current with a large insulation withstand voltage between the primary winding and the secondary winding. transformer. In this inverter transformer, a primary winding 3 is wound around a cylindrical reel 2a of an insulating spool 2 to which a terminal 1 is mounted, and a secondary winding 4 is mounted below the spool 2. A pair of magnetic cores 5, 6 sandwich the spool 2 from above and below, and face each other via the insulating sheet 7 to form a closed magnetic circuit structure. The inverter transformer is a narrow space to be mounted on a portable device such as a digital still camera or an 8mm video camera. Therefore, the thickness of the inverter transformer must be made to a thin thickness of several mm or less. However, the conventional inverter transformer as shown in Fig. 8 has a structure in which the primary winding 3 and the secondary winding 4 overlap each other in a height direction, and it is difficult to be a thin type. When winding a reverse transformer, the number of turns of the primary winding on the low-voltage side is generally applicable to the Chinese national standard (CNS) A4 specification (210X297 mm) -4-(Please read the precautions on the back before filling this page)
587260 經濟部智慧財產局員工消費合作社印製 A7 B7五、發明説明$ ) 是數十匝，而高壓側的二次繞組的匝數是成爲數百匝以上 。如此，爲了達成薄型化及減低高度，此些繞組以外者所 佔空間要如何地減少厚度，成爲極重要者。 發明內容 本發明是考慮上述事項所創作者，其目的是在於提供 一種確保一次繞組與二次繞組之間的絕緣耐壓之狀態下， 可顯著地減低高度的反流變壓器者。 爲了達成上述目的，本發明的反流變壓器，屬於具備 至少其中一方的鐵心具有中央腳及複數外腳，互相面對面 而形成閉磁路的一對鐵心，及一次繞組與電磁結合於該一 次繞組的二次繞組，及植設有複數端子的座部與具有從該 座部朝上方突出的筒形捲軸的絕緣性捲線軸；在上述捲線 軸的捲軸插入上述中央腳，而將上述一次繞組及上述二次 繞組配置於上述中央腳的周圍的反流變壓器，其特徵爲： 上述捲軸是具有在與上述鐵心的中央腳之間捲裝繞組所需 的空間者；將上述一次繞組及上述二次繞組中的任一方的 繞組直接捲繞於上述中央腳，並將另一方的繞組捲繞於上 述捲軸；同時上述一次繞組是直接載置於上述鐵心上，上 述二次繞組是載置於上述捲線軸的上述座部上。 實施方式 在第1圖至第4圖，表示本發明的反流變壓器的一實施 例。如第4圖所示，捲線軸1〇是具備：以合成樹脂一體地成 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） Γ5Τ (請先閱讀背面之注意事項再填寫本頁) :裝· 訂 587260 A7 B7 五、發明説明:^ ) (請先閱讀背面之注意事項再填寫本頁) 形的座部11與筒形捲軸1 2。在座部11的兩端部安裝有複數 端子20，而在各端子20—體成形有座部11內部連繫的引線連 接部21。 從座部11的中央朝上方突出的捲軸12是具有貫通孔14 。在座部11，設有從二側面達到捲軸12附件的兩條開縫15a， 15b(第 4圖）。 爲了將整體反流變壓器的寬度變成狹窄，捲軸1 2的水 平斷面是呈橢圓形，而一次繞組30及二次繞組40，分別從上 述觀看也被捲繞成橢圓形。 50，60是互相面對面而形成閉磁路的一對鐵心。如第4 圖所示，在下方鐵心50設置從平板部51的中央朝上方突出 的中央腳52。該中央腳52的水平斷面也呈橢圓形。在平板 部51的四角，形成有朝上方突出的外腳53。 鐵心50是插入在將中央腳52設於捲線軸10的捲軸12的貫 通孔14中，在貫通孔14的周圍與鐵心50的中央腳52之間，形 成有橢圓環狀的空間。又，將中央腳52及外腳53面對面於 平板狀鐵心60，而鐵心50與鐵心60是互相地固定。 經濟部智慧財產局員工消費合作社印製 作爲鐵心50，60的材料，使用高絕緣性的Ni-Zn系陶鐵 磁體材料較理想。但是，爲了更提高飽和磁通密度，同時 減低鐵心損耗，也可用Ni-Zn系陶鐵磁體材所形成。又，中 央腳52的水平斷面形狀，不是上述橢圓形，而也可作成長 圓形或圓形。 一次繞組30是就近捲繞於鐵心50的中央腳52，而二次繞 組40是捲繞於捲線軸1〇的捲軸12。一次繞組30是在中央腳52 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -6 - 587260 A7 B7 五、發明説明4 ) (請先閱讀背面之注意事項再填寫本頁) 與捲軸12之間的空間位置，成爲就近載置於鐵心50上的狀 態。二次繞組40是在捲軸12的外側位置，被載置於捲線軸10 的座部11上。在該二次繞組40使用極細線之故，因而對熱 較弱。 在錫焊之際成爲高溫的鐵心50的熱被直接傳至二次繞 組40使得絕緣被膜剝離等不會受到損傷地，載置於座部i! 上。又，在另一方的鐵心60與二次繞組40之間具有間隙之 故，因而熱傳導很少。 二次繞組40的高電位側的引線41，是爲了確保絕緣耐 壓而配置於捲軸12與座部11所接觸的隅部18(第1圖）。二次 繞組40的引線41及一次繞組30的引線31是分別經開縫15a， 15b(第4圖）而被抽出至座部11下面之後，連接於不同端子20 的引線連接部21。又，從一次繞組30除了兩端的引線31之外 ，還拉出分接點。 經濟部智慧財產局員工消費合作社印製 一次繞組30及二次繞組40是隔著絕緣性捲軸1 2，成爲同 心狀地位於中央腳52的周圍。代替一次繞組30及二次繞組 40是直接捲繞於中央腳52或捲軸12，使用融著線事先捲繞固 定在如第4圖的橢圓形的空芯線圈狀，並將此載置於鐵心50 或捲線軸10上較理想。 第5圖是表示本發明的第2實施例，改換第1實施例的 一次繞組30與二次繞組40者。捲線軸1〇的捲軸12是位於座部 11的外周部分，而座部介於捲軸1 2與中央腳5 2之間。將二次 繞組40直捲繞於鐵心50的中央腳52，而將一次繞組30捲繞於 捲線軸10的捲軸12。如此地構成之情形，也成爲一次繞組30587260 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of invention $) is dozens of turns, and the number of turns of the secondary winding on the high-voltage side is hundreds of turns or more. In this way, in order to reduce the thickness and reduce the height, how to reduce the thickness occupied by the space other than these windings becomes extremely important. SUMMARY OF THE INVENTION The present invention has been made in consideration of the above matters, and an object of the present invention is to provide a reverse current transformer that can significantly reduce the height while ensuring the insulation withstand voltage between the primary winding and the secondary winding. In order to achieve the above-mentioned object, the inverter transformer of the present invention belongs to a pair of cores having at least one of the cores having a central leg and a plurality of outer legs, facing each other to form a closed magnetic circuit, and a pair of primary windings and electromagnetic coupling to the primary winding A secondary winding, and a seat portion with a plurality of terminals and an insulating reel having a cylindrical reel protruding upward from the seat portion; the central leg is inserted into the reel of the reel, and the primary winding and the second winding are inserted. The secondary winding is arranged around the center leg of the inverter transformer, and is characterized in that: the winding shaft is provided with a space required for winding the winding between the core leg and the center leg of the core; Any one of the windings is directly wound on the center leg, and the other winding is wound on the reel; meanwhile, the primary winding is directly placed on the core, and the secondary winding is placed on the reel. On the seat. Embodiments Figs. 1 to 4 show an embodiment of the inverter transformer of the present invention. As shown in Figure 4, the reel 10 is equipped with: synthetic resin integrated cost paper size applicable Chinese National Standard (CNS) A4 specification (210X 297 mm) Γ5T (Please read the precautions on the back before filling this page ): Binding · Order 587260 A7 B7 V. Description of the invention: ^) (Please read the precautions on the back before filling out this page) Shaped seat 11 and cylindrical reel 12. A plurality of terminals 20 are attached to both end portions of the seat portion 11, and a lead connection portion 21 connected to the inside of the seat portion 11 is integrally formed with each terminal 20. The reel 12 protruding upward from the center of the seat portion 11 has a through hole 14. The seat portion 11 is provided with two slits 15a, 15b that reach the attachment of the reel 12 from both sides (FIG. 4). In order to narrow the width of the entire inverter transformer, the horizontal section of the reel 12 is elliptical, and the primary winding 30 and the secondary winding 40 are respectively wound into an oval shape as viewed from the above. 50 and 60 are a pair of iron cores facing each other to form a closed magnetic circuit. As shown in Fig. 4, the lower core 50 is provided with a center leg 52 protruding upward from the center of the flat plate portion 51. The horizontal cross section of the central leg 52 is also oval. At four corners of the flat plate portion 51, outer legs 53 are formed to protrude upward. The iron core 50 is inserted into the through hole 14 in which the center leg 52 is provided on the reel 12 of the spool 10, and an elliptical annular space is formed between the periphery of the through hole 14 and the center leg 52 of the core 50. Further, the center leg 52 and the outer leg 53 face each other on the flat plate-shaped core 60, and the core 50 and the core 60 are fixed to each other. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. As the material of the iron cores 50 and 60, it is ideal to use high-insulation Ni-Zn ceramic iron magnet materials. However, in order to increase the saturation magnetic flux density and reduce the core loss at the same time, a Ni-Zn-based ceramic ferromagnetic material can also be used. In addition, the horizontal cross-sectional shape of the central leg 52 is not the above-mentioned elliptical shape, but may be a long circle or a circle. The primary winding 30 is the central leg 52 wound on the iron core 50 nearby, and the secondary winding 40 is the spool 12 wound on the spool 10. The primary winding 30 is at the center leg 52. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -6-587260 A7 B7 V. Description of the invention 4) (Please read the precautions on the back before filling this page) The position of the space between the reel 12 and the reel 12 is placed on the iron core 50 nearby. The secondary winding 40 is placed outside the reel 12 and is placed on the seat 11 of the reel 10. Since the secondary winding 40 uses extremely thin wires, it is weak against heat. The heat of the iron core 50 which has become a high temperature during soldering is directly transferred to the secondary winding 40 so that the insulation film is not peeled off and the like, and is placed on the seat portion i !. In addition, since there is a gap between the other iron core 60 and the secondary winding 40, there is little heat conduction. The lead 41 on the high-potential side of the secondary winding 40 is arranged at the cymbal portion 18 (Fig. 1) where the reel 12 and the seat portion 11 are in contact with each other in order to ensure insulation withstand voltage. The lead 41 of the secondary winding 40 and the lead 31 of the primary winding 30 are respectively drawn out under the seat portion 11 through the slits 15a and 15b (Fig. 4), and then connected to the lead connection portions 21 of different terminals 20. In addition to the lead wires 31 at both ends, a tap point is pulled out from the primary winding 30. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The primary winding 30 and the secondary winding 40 are located concentrically around the center leg 52 via an insulating reel 12. Instead of the primary winding 30 and the secondary winding 40, they are directly wound on the center leg 52 or the reel 12, and are fused in advance and fixed in the shape of an oval air-core coil as shown in FIG. 50 or 10 is better. Fig. 5 shows a second embodiment of the present invention, in which the primary winding 30 and the secondary winding 40 of the first embodiment are replaced. The reel 12 of the reel 10 is located at the outer peripheral portion of the seat portion 11, and the seat portion is interposed between the reel 12 and the center leg 52. The secondary winding 40 is directly wound around the center leg 52 of the core 50, and the primary winding 30 is wound around the spool 12 of the spool 10. In such a case, it becomes the primary winding 30
本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） TjZ 587260 經濟部智慧財產局員工消費合作杜印製 A7 B7五、發明説明4 ) 是直接載置於鐵心50上，而二次繞組40是載置於捲線軸10的 座部11上的狀態。 第6圖是表示本發明的第3實施例者。該第3實施例是 在第1圖的反流變壓器中，在於鐵心50與鐵心60的相對向面， 如第6圖所示地，插入絕緣片所構成的間隔件70者。藉此， 可提局二次繞組4 0與鐵心6 0之間的絕緣耐壓，同時得到不 容易磁性飽和的反流變壓器。 第7圖是表示本發明的第4實施例者。該第4實施例是 在捲線軸10的捲軸12上端設置領環部16者，其他構造是與第 1圖的反流變壓器相同。在該構造，除了可更提高絕緣耐壓 之外，不必事先捲繞固定二次繞組40而可直接捲繞於捲線 軸10之故，因而具有容易進行繞組作業的優點。 (產業上的利用可能性） 依照本發明，成爲構造簡單又製造容易，同時可將高 度減低大約2〜3mm。又，可確保一次繞組與二次繞組之間的 充分絕緣耐壓，也具有可提供可安裝於薄且寬度狹窄的空 間的反流變壓器的效果。 圖式簡單說明 第1圖是表示本發明的第1實施例的放大側斷面圖。 第2圖是表示同實施例的俯視圖。 第3圖是表示同實施例的前視圖。 第4圖是表示同實施例的分解立體圖。 本&張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）7〇Ζ (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 587260 A7 B7 五、發明説明4 ) 第5圖是表示本發明的第2實施例的側斷面圖。 第6圖是表示本發明的第3實施例的側斷面圖。 第7圖是表示本發明的第4實施例的側斷面圖。 第8圖是表示反流變壓器的習知例的正斷面圖。 符號說明 1，20 端子 2，10 捲線軸 3, 30 一次繞組 4, 40 二次繞組 5,6,50,60 鐵心 11 座部 12 捲軸 14 貫通孔 16 領環部 18 隅部 21 引線連接部 31，41 引線 51 平板部 52 中央腳 53 外腳 70 間隔件 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -9 - (請先閱讀背面之注意事項再填寫本頁)This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) TjZ 587260 Duty printing of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by A7 B7 V. Invention Description 4) It is directly placed on the iron core 50, and the secondary The winding 40 is placed on the seat 11 of the spool 10. Fig. 6 shows a third embodiment of the present invention. The third embodiment is the inverter transformer shown in FIG. 1 in which the core 50 and the core 60 are facing each other, and as shown in FIG. 6, a spacer 70 made of an insulating sheet is inserted. With this, the insulation withstand voltage between the secondary winding 40 and the iron core 60 can be improved, and a reflux transformer that is not easily magnetically saturated can be obtained. Fig. 7 shows a fourth embodiment of the present invention. In the fourth embodiment, a collar portion 16 is provided on the upper end of the spool 12 of the spool 10. The other structure is the same as that of the inverter transformer of FIG. With this structure, in addition to improving the insulation withstand voltage, the secondary winding 40 can be directly wound around the bobbin 10 without winding and fixing the secondary winding 40 in advance. This has the advantage that the winding operation can be easily performed. (Industrial Applicability) According to the present invention, the structure is simple and easy to manufacture, and the height can be reduced by about 2 to 3 mm. In addition, it is possible to ensure a sufficient insulation and withstand voltage between the primary winding and the secondary winding, and it is also possible to provide an inverter transformer that can be installed in a thin and narrow space. Brief Description of Drawings Fig. 1 is an enlarged side sectional view showing a first embodiment of the present invention. Fig. 2 is a plan view showing the same embodiment. Fig. 3 is a front view showing the same embodiment. Fig. 4 is an exploded perspective view showing the same embodiment. This & Zhang scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 7〇Z (Please read the precautions on the back before filling out this page) Printed by the Intellectual Property Bureau Staff Consumer Cooperative of the Ministry of Economic Affairs 587260 A7 B7 V. 4) FIG. 5 is a side sectional view showing a second embodiment of the present invention. Fig. 6 is a side sectional view showing a third embodiment of the present invention. Fig. 7 is a side sectional view showing a fourth embodiment of the present invention. Fig. 8 is a front cross-sectional view showing a conventional example of the inverter transformer. DESCRIPTION OF SYMBOLS 1, 20 Terminals 2, 10 Reels 3, 30 Primary windings 4, 40 Secondary windings 5, 6, 50, 60 Iron core 11 Seat part 12 Reel 14 Through hole 16 Collar part 18 Stern part 21 Lead connection part 31 , 41 Leads 51 Flat part 52 Central leg 53 Outer leg 70 Spacer This paper size is applicable to Chinese National Standard (CNS) A4 (210X297 mm) -9-(Please read the precautions on the back before filling this page)