經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（I ) 本發明是有關於一種對焦電位計’包括具有一個電性 絕緣之基座的一個外蓋，此基座位於具有複數個接觸平面 以及一個阻抗路徑的一個主平面上，其中，此阻抗路徑包 括至少兩個形式爲圓弧形的阻抗部分，藉此，任一個阻抗 部分就能成爲一個可變電阻的一部份。此可變電阻使得兩 個接觸平面能藉由連結於外蓋上的一個轉子，以及置於此 阻抗路徑上的一個接觸彈簧而互相電性連接。本發明同時 也是有關於適用在這樣一個對焦電位計的一種基座。 上述之對焦電位計的形式’在本質上已經是眾所皆 知，例如：從美國專利編號US-A-5.726.625就可以得知。 這種型式的電位計是使用於監視器以及電視上。有了這些 電位計的幫助，我們可以設定處於監視器或是電視之中的 電位對焦以及陰極射線管的螢幕電壓。這種已知的對焦電 位計包括了一個外蓋，舉例來說，可以由塑膠所製成，而 在此外蓋之中則放置有電性絕緣的基座。在這個基座上， 有複數個接觸平面以及一個阻抗路徑，而其形成方法’舉 例來說，是使用絲網印刷（silkscreen printing)。與此電位計 外部的電子裝置之間，能透過這些接觸平面而產生電性耦 接。簡單類型的對焦電位計具有用於輸入電壓的一個接觸 平面，用以輸出對焦電壓的一個接觸平面，用以輸出螢幕 電壓的一個接觸平面以及用以接地的一個接觸平面。在這 個對焦電位計中的總電壓降，可以達到13千伏特（kV)或甚 至更高。 爲了調整對焦電壓以及螢幕電壓，此阻抗路徑必須具 ----：-------— (請先閱讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（21 〇 X 297公釐） 經濟部中央標準局員工消費合作社印製 459136 54 ] 0pir.doc/002 __B7 五、發明説明（之） 有至少兩個弧形的阻抗部分。這些阻抗部分中的任一個， 都是接合於輸入電壓之接觸平面與對焦電壓或螢幕電壓之 間的一個電性導通路徑上之可變電阻的一部份。這個可變 電阻包括一個轉子，這涸轉子置放於此阻抗路徑妁-區圓 孤形之上。藉由此轉子，我們就可以改變在這些接觸甲面 之尚的總電阻。 習知的對焦電位計有一個缺點，就是無法將這些元件 加以縮小。這是由於在對焦電位計中的高電力場強度（可以 達到lKWmm)所造成。在實做上，如果各個弧形阻抗路徑 彼此之間的距離太近，就很容易會發生電力崩潰。而在上 述的美國專利編號US-A-5.726.625所提出的內容中，並沒 有提供對這個問題的一個適當解決方法。 本發明的一個目的就是提供一個縮小對焦電位計的方 法c 藉由前言中所介紹，並且特徵爲：在兩個阻抗部分之 間，於基座中有一個穿越的管道，而且在此管道中包括突 出於此基座的兩個主平面的一個電性絕緣元件的一種對焦 電位計，可以達成本發明的這一個以及其他目的。 隨著建議方法的達成，在個別阻抗部分之間，直接經 過空氣的距離也會隨著增加。所以在相同場強度的考量之 下，將兩個阻抗部分彼此更爲靠近而不使其產生電力崩 潰，也就因此可以達成。藉著將兩個阻抗部分更爲緊靠， 就代表可以同時選擇更小的尺寸。而因此，實質上將對焦 電位計加以縮小就變成是可行的。而電性導通元件則可以 (請先聞讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) Α·4規格（210 X 297公釐） ^ 5 9J0^,d6/002 A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（?) — 包括，舉例來說，如同聚次苯基氧化物(PPO, polyphenylene oxid)或聚丁烯對苯二甲酸 PBTP(P〇Iybutyleneterephthalate) 之類的一個塑膠層。 根據本發明之一較佳實施例的對焦電位計’以在外蓋 中內建有電注絕緣元件爲其特徵。藉由嗖弔這種方法，就 可以以一種比注射模組更爲簡單的程序’來製作做爲外蓋 中一部份的電性絕緣元件° 在本發明之對焦電位計的一個較佳實施例之中，也有 以在外蓋中提供複數個電性絕緣元件來做爲特徵，而這些 後續的元件，則間隔地建立在此外蓋內部的兩個主表面之 一的上面。由於在此基座之管道中有這些元件的存在’介 於兩個阻抗部分之間，經由空氣的直接距離就增加了。 在另外一個本發明之對焦電位計的一個較佳實施例 中，則以此管道爲圖弧形來做爲特徵。根據實驗上的驗證， 具有圓弧形管道的基座，會遠比使用直線形管道的基座更 爲堅固。 本發明同時也是有關於適用在本發明的一個對焦電位 計上的一種基座。這樣子的基座特徵在於：在一個主表面 上具有複數個接觸平面以及一個阻抗路徑，其中，阻抗路 徑包括至少兩個圓弧形的阻抗部分，藉此，在兩個阻抗部 分之間’會有一個穿越管道存在於此基座之中C=更好的是， 這個通道的形狀是圓弧形。 下文特舉較佳實施例，並配合所附圖式，將本發明作 更詳細的說明，其中： (請先閲讀背面之注意事項再填寫本頁) 訂 本紙張尺度適用中國國家標準（CNS ) A4現格（2丨OX297公釐） 經濟部中央標準局員工消費合作社印製 4 559〇i1h'^oc®02 B7 五、發明説明（f) 第1圖繪示的是根據本發明一種對焦電位計之剖面 圖； 第2圖繪示的是使用在對焦電位計中的基座平面圖， 其中，第2A圖爲根據習知技藝所得的圖，而第2B圖則是 根據本發明所得的圖。 必須注意的是，在不同的圖示中，相似的部分就已相 同的參考數字來表示。 重要元件標號 B對焦電位計 2 :外蓋 3 :底端部分 4 :遮蓋部分 5 :膠著物 6，7 :轉子 8，9 :接觸彈簧 10 :基座 11，12，13，14 :接觸平面 15 :阻抗路徑 16，17 :阻抗部分 18 :穿越管道 19，20，21 :電性絕緣元件 22，23 :接點 24，25 :導通路徑 較佳實施例 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210><297公釐） 459136 54 lOpif.doc/002 A7 B7 五、發明説明（f ) 第1圖顯示了根據本發明之—個對焦電位計1的剖面 (請先閱讀背面之注意事項再填寫本頁) 圖。它包括了一個外蓋2 ’而外蓋2則包括由塑膠(在此處 爲PBTB)所做成的一個底端部分3，以及由塑膠（在此處爲 PPO)所做成的一個遮蓋部分4，這些部分藉由膠著物5的 協助，將彼此之間以防濕氣的方式相互連結。而外蓋2則 具有用以調整螢幕電壓的一個轉子6以及用以調整對焦電 壓的一個轉子7。轉子6與轉子7則分別具有接觸彈簧8 以及接觸彈簧9。 在外蓋2之中，有一個陶質材料(氧化鋁)所做成的箝 制基座10。此基座10在第2Β圖中有更詳細的圖式。在轉 離底端部分3的主表面上，基座10具有四個接觸平面（11， I2，13和14)以及一個阻抗路徑15。阻抗路徑15包括兩 個圓弧形的阻抗部分16與π。必須注意的是，根據使用 的需求，基座10也可以由超過兩個的阻抗部分所組成。如 第1圖所示’任一個接觸彈簧8或9，安置在阻抗部分16， 17中的一個之上。接觸平面I 1，〗2，丨3與14以及包括各 阻抗部分的阻抗路徑15，是藉由絲網印刷的協助而建立在 基座10之上。 經濟部中央標準局貝工消費合作社印製 在基座10之中，有一個圓弧形的穿越管道18在兩個 阻抗部分16與I7之間。在穿越管道18之中，有三個電性 絕緣元件19，20與21。在前述的對焦電位計丨之中，這 些後續元件(19，20，21)則間隔地建立在遮蓋部分4與底 端部分3之內部的兩個主表面之一的上面。而因此，在兩 個阻抗部分之間，可以得到經過空氣的一個相對較大距 本紙張尺度適用中國囤家標準（CNS) A4规格（210X297J5~y 459136 54 1 0pif,doc/002 A7 __B7 五、發明説明（夕） 離。 第2A圖顯示了根據習知技藝，用於一個對焦電位計 之一個基座10的平面圖。此基座10的尺寸是21.3毫米 (mm)M2.1毫米。此基座10.具有四個接觸平面，分別是用 於輸入電壓的接觸平面11，用於對焦電壓的接觸平面12， 用於螢幕電壓的接觸平面13以及用.於接地的接觸平面 I4。此基座10也同時具有一個阻抗路徑15，這個阻抗路 徑15包括圓弧形的兩個阻抗部分16，17。一個轉子（並沒 畫出）的一個接觸彈簧（並沒畫出）會安置在這些圓弧上，而 一個接觸彈簧會與此對焦電位計之對焦部分的接點22之 間有電性耦接，另外一個接觸彈簧則會與此對焦電位計之 螢幕部分的接點23產生電性耦接。接點22，23經由導通 路徑24，25而分別與接觸平面12，13產生電性耦接。 經濟部中央標準局員工消費合作社印製 (請先聞讀背面之注意事項再填寫本頁) 第2B圖顯示了根據本發明，用於一個對焦電位計之 一個基座10的平面圖。阻抗路徑15，阻抗部分16，17， 接觸平面11，12，13，14，接點22，23以及倒通路徑24， 25，在設計上的本質都與第2A圖中的基座相似。將第2A 圖中的基座與第2B圖中的基座相比，第2B圖由％基座包 括了位於沮沆部分16, 17之間的一個圓弧肜的#越管道 18。由於使用在此對焦電位計由的基座10可以將一個電性 絕緣元/牛置放於此穿越管道18之中，所以在比基垄10 t， 就可以在電力崩潰機率相同的前提下，使兩個阻坑部分16 與17彼此更爲靠近。此外，第2B圖中的基座10的尺寸 是20.8毫米*33.0毫米。這個尺寸就遠比第2A圖中的基座 本紙張尺度適用中國國家操率（CNS ) A4规格（210X297公釐） 459136 I 〇pif\doc/0〇2 A7 ____B7_—_ 五、發明説明（1) 爲小。 藉著使用本發明的方法，根據本發明之基座的尺寸相 較於習知技藝的基座尺寸可以更小。因此^根據本發明之 使用此基座的對焦電位計就可以比傳統的對焦電位計小。 也因此’本發明的對焦電位計就能夠在使用於監視器，電 視以及投射電視上得到更大的好處。 經濟部中央標準局貝工消費合作社印製 適 度 ^ 張 紙 辟 公 97Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the Invention (I) The present invention relates to a focusing potentiometer including an outer cover having a base with electrical insulation, and the base is located on a base having a plurality of The contact plane and a main plane of an impedance path, wherein the impedance path includes at least two impedance portions in the form of a circular arc, whereby any impedance portion can become a part of a variable resistor. This variable resistor enables the two contact planes to be electrically connected to each other by a rotor connected to the outer cover and a contact spring placed on the impedance path. The invention also relates to a base suitable for such a focus potentiometer. The form of the above-mentioned focus potentiometer is already known in nature, for example, it can be known from the US patent number US-A-5.726.625. This type of potentiometer is used on monitors and televisions. With the help of these potentiometers, we can set the potential focus on the monitor or TV and the screen voltage of the cathode ray tube. This known focus potentiometer includes an outer cover, which can be made of plastic, for example, and an electrically insulating base is placed in the outer cover. On this base, there are a plurality of contact planes and an impedance path, and the formation method thereof is, for example, silkscreen printing. The electronic devices external to this potentiometer can be electrically coupled through these contact planes. A simple type of focus potentiometer has a contact plane for inputting a voltage, a contact plane for outputting a focus voltage, a contact plane for outputting a screen voltage, and a contact plane for grounding. The total voltage drop in this focus potentiometer can reach 13 kilovolts (kV) or even higher. In order to adjust the focus voltage and screen voltage, this impedance path must have: ---------------- (Please read the precautions on the back before filling out this page) The paper size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (20.1 × 297 mm) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 459136 54] 0pir.doc / 002 __B7 V. Description of the invention (there) There are at least two arc-shaped impedance parts. Each of these impedance sections is part of a variable resistor that is connected to an electrical conduction path between the contact plane of the input voltage and the focus voltage or screen voltage. This variable resistor includes a rotor, which is placed above the impedance path 妁 -zone circle. With this rotor, we can change the total resistance at these contact surfaces. One disadvantage of conventional focus potentiometers is that these components cannot be scaled down. This is due to the high electric field strength (which can reach 1KWmm) in the focus potentiometer. In practice, if the distances between the arc-shaped impedance paths are too close to each other, it is easy to cause power collapse. However, the above-mentioned U.S. Patent No. US-A-5.726.625 does not provide a proper solution to this problem. It is an object of the present invention to provide a method c for reducing the focus potentiometer c. As described in the introduction, and characterized in that there is a pipe passing through the base between the two impedance parts, and A focusing potentiometer with an electrically insulating element protruding from two main planes of the base can achieve this and other objectives of the invention. As the proposed method is achieved, the distance directly passing through the air between the individual impedance sections will also increase. Therefore, under the consideration of the same field strength, it can be achieved by bringing the two impedance parts closer to each other without causing power collapse. By placing the two impedance sections closer together, it means that a smaller size can be selected at the same time. Therefore, it is practically possible to reduce the focus potentiometer. The electrically conductive components can be used (please read the precautions on the back before filling out this page). The size of the paper is applicable to the Chinese National Standard (CNS) Α · 4 specification (210 X 297 mm) ^ 5 9J0 ^, d6 / 002 A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the Invention (?) — Includes, for example, as polyphenylene oxide (PPO, polyphenylene oxid) or polybutylene terephthalate PBTP ( 〇Iybutyleneterephthalate). A focusing potentiometer 'according to a preferred embodiment of the present invention is characterized in that an electro-insulation insulating element is built in the outer cover. By hoisting this method, a simpler procedure than the injection module can be used to make an electrically insulating element that is part of the cover. A preferred implementation of the focus potentiometer of the present invention In the example, it is also characterized by providing a plurality of electrical insulating elements in the outer cover, and these subsequent elements are spaced on one of the two main surfaces inside the outer cover. Because of the presence of these elements' in the duct of this base, between the two impedance sections, the direct distance through the air is increased. In another preferred embodiment of the focus potentiometer of the present invention, the pipe is characterized by an arc shape. According to experimental verification, a base with a circular pipe is much stronger than a base with a straight pipe. The present invention also relates to a base suitable for a focus potentiometer of the present invention. The base of this way is characterized in that it has a plurality of contact planes and an impedance path on a main surface, wherein the impedance path includes at least two arc-shaped impedance portions, whereby the There is a crossing pipe in this base. C = Better, the shape of this channel is arc. The present invention will be described in more detail below with reference to the preferred embodiments and the accompanying drawings. Among them: (Please read the precautions on the back before filling this page) The paper size of the paper is applicable to the Chinese National Standard (CNS) A4 is present (2 丨 OX297 mm) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 4 559〇i1h '^ oc®02 B7 V. Description of the invention (f) Figure 1 shows a focus potential according to the present invention Figure 2 is a sectional view of the base; Figure 2 is a plan view of the base used in the focus potentiometer, wherein Figure 2A is a diagram obtained according to conventional techniques, and Figure 2B is a diagram obtained according to the present invention. It must be noted that in different illustrations, similar parts are indicated by the same reference numerals. Important component number B Focus potentiometer 2: Outer cover 3: Bottom end part 4: Covering part 5: Adhesive matter 6, 7: Rotor 8, 9: Contact spring 10: Base 11, 12, 13, 14: Contact plane 15 : Impedance path 16, 17: Impedance part 18: Crossing pipes 19, 20, 21: Electrical insulation elements 22, 23: Contacts 24, 25: Conduction path preferred embodiment (please read the precautions on the back before filling in this (Page) This paper size applies Chinese National Standard (CNS) A4 specification (210 > < 297 mm) 459136 54 lOpif.doc / 002 A7 B7 V. Description of the invention (f) Figure 1 shows a Focus potentiometer 1 section (please read the precautions on the back before filling this page). It includes an outer cover 2 'and the outer cover 2 includes a bottom portion 3 made of plastic (in this case, PBTB), and a covering portion made of plastic (in this case, PPO) 4. These parts are connected to each other in a moisture-proof manner with the help of the glue 5. The outer cover 2 has a rotor 6 for adjusting the screen voltage and a rotor 7 for adjusting the focus voltage. The rotor 6 and the rotor 7 each have a contact spring 8 and a contact spring 9. In the outer cover 2, there is a clamp base 10 made of a ceramic material (alumina). This base 10 is shown in more detail in Figure 2B. On the main surface turned away from the bottom end portion 3, the base 10 has four contact planes (11, I2, 13 and 14) and an impedance path 15. The impedance path 15 includes two arc-shaped impedance portions 16 and π. It must be noted that the base 10 may also be composed of more than two impedance parts according to the requirements of use. As shown in Fig. 1, any one of the contact springs 8 or 9 is placed on one of the resistance portions 16, 17. The contact planes I 1, 2, 3, and 14 and the impedance path 15 including the impedance portions are established on the base 10 with the help of screen printing. Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Shellfish Consumer Cooperative. In the base 10, there is an arc-shaped crossing pipe 18 between two impedance sections 16 and I7. Among the crossing pipes 18, there are three electrically insulating elements 19, 20 and 21. In the aforementioned focus potentiometer, these subsequent elements (19, 20, 21) are established at intervals on one of the two main surfaces inside the cover portion 4 and the bottom portion 3. Therefore, between the two impedance sections, a relatively large distance from the air can be obtained. The paper size is applicable to the Chinese standard (CNS) A4 (210X297J5 ~ y 459136 54 1 0pif, doc / 002 A7 __B7. Description of the invention (Even) Fig. 2A shows a plan view of a base 10 for a focus potentiometer according to the conventional art. The size of the base 10 is 21.3 millimeters (mm) M2.1 millimeters. This base Block 10. It has four contact planes, namely contact plane 11 for input voltage, contact plane 12 for focus voltage, contact plane 13 for screen voltage, and contact plane I4 for ground. This base 10 also has an impedance path 15, which includes two arc-shaped impedance parts 16, 17. A contact spring (not shown) of a rotor (not shown) will be placed in these arcs One contact spring will be electrically coupled with the contact 22 of the focusing portion of the focus potentiometer, and the other contact spring will be electrically coupled with the contact 23 of the screen portion of the focus potentiometer .Contact 22 , 23 are electrically coupled to the contact planes 12, 13 via conduction paths 24, 25 respectively. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) Figure 2B shows Shows a plan view of a base 10 for a focus potentiometer according to the present invention. Impedance path 15, impedance portions 16, 17, contact planes 11, 12, 13, 14, contacts 22, 23 and reverse path 24, 25. The essence of the design is similar to the base in Figure 2A. Comparing the base in Figure 2A with the base in Figure 2B, Figure 2B includes the base located in the frustrated portion. A circular arc of # 越 管 18 between 16, 17. Because the base 10 used for the focusing potentiometer can be placed in this through the pipeline 18, an electrical insulator With a base ridge of 10 t, the two pit-blocking portions 16 and 17 can be brought closer to each other on the premise of the same probability of power collapse. In addition, the size of the base 10 in Figure 2B is 20.8 mm * 33.0 mm. This The size is much larger than the base in Figure 2A. CNS) A4 specification (210X297 mm) 459136 I 〇pif \ doc / 0〇2 A7 ____ B7 _—_ 5. Description of the invention (1) is small. By using the method of the present invention, the size of the base according to the present invention is relatively small. The size of the base can be smaller than the conventional technique. Therefore, the focus potentiometer using the base according to the present invention can be smaller than the traditional focus potentiometer. Therefore, the focus potentiometer of the present invention can be used. Get more benefits on monitors, TVs, and projection TVs. Moderately printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ^ 张纸 沛公 97