Α7 Β7 五、發明說明（1 ) 本發明係關於適用於音響機器等之晶片型可變電阻器 〇 '兹就習知晶片型可變電阻器之一形態參照圖9〜圖 1 3說明本發明先前所提案者，圖9〜圖1 3均顯示習知 晶片型可變電阻器，其中圖9爲立體分解圖，圖1 0爲剖 面圖，圖1 1爲主要部份擴大立體圖，圖1 2爲主_要部份 擴大剖面圖，圖1 3爲將晶片型可變電阻器裝設於印刷基 板之狀態剖面顯示圖。 如圖9〜圖1 3所示，絕緣基板3 1乃由陶瓷材料予 以形成被燒成加工呈略矩形，並以約2 m m四角形之極小 型大小構成之，而具有自上面3 1 a貫穿至下面3 1 b被 設於中心部之圓賅孔3 1 d，與包圍圓形孔3 1 d被設於 上面3 1 a之凹部3 1 e ，以及自側面3 1 c突出之一對 突部3 1 f 。 電阻件3 2係例如由金屬陶瓷系軟漿等所構成，藉印 刷等以略圓弧狀被形成於絕緣基板3 1之上面3 1 a之凹 部3 1 e周圍。 一對電極3 3則例如由銀與玻璃料所成，以略矩形涵 蓋絕緣基板3 1之上面3 1 a之突部3 1 f上予以設置， 並分別連接於電阻件3 2之兩端部，而由印刷等予以形成 呈對。 又，端子3 4則由金屬板所成，具有略矩形之底板 3 4 a，及與底板呈直交，且自相鄰兩側緣分別向上曲折 之一對引腳34b、 34c。 (請先閱讀背面之注意事項再填寫本頁) ----丨訂·--------'^· 經濟部智慧財產局員工消费合作社印製 本紙張尺度適用夺國國家標準（CNS)A4規格（210 χ 297公釐） -4 - A7 B7 五、發明說明（2 ) 且’端子3 4之底板3 4 a係抵觸於絕緣基板3 1之 下面3 1 b ，引腳3 4 b、3 4.· c直交於絕緣基板3 1角 <靖先閱讀背面之沒項再填寫本頁) 部沿相鄰兩側3 1 c被予以設置，又引腳3 4 b、 34c 頂端被曲折於絕緣基板3 1之上面3 1 a側，並將端子 3 4裝設於絕緣基板3 1。 而電極3 3與端子3 4則由焊料9予以焊接，‘呈互相 連結固定。 又，中間端子3 6乃具有略長方形之底板3 6 a ，與 底板3 6 a —端被切成豎立至上方之側板3 6 b，及於底 板3 6 a中間部向上予以引伸所設之圓筒狀穿眼部3 6 c 〇 又，中間端子3 6係以其底板3 6 a抵觸於絕緣基板 3 1之下面3 1 b，穿眼部3 6 c穿插於絕緣基板3 1之 孔3 1 d，及側板3 6 b沿絕緣基板3 1之側面3 1 c所 設欠口部向上面3 1 a延伸之狀態被予以配設。 經濟部智慧財產局員工消費合作社印製 滑動件3 7則由金屬板所成，被壓榨加工呈圖板狀， 而含有具設有孔3 7 a之底面壁3 7 b之椀狀筒狀部 3 7 c ，與具將筒狀部3 7 c頂部一部份予以彎折，形成 於該筒狀部3 7 c上面之十字形起子槽3 7 d之操作部 3 7 e ，以及自筒狀部3 7 c外周向下延伸略呈V字形之 滑動部3 7 f。 該滑動件3 7之筒狀部3 7 c乃如圖1 2所示被配置 於絕緣基板3 1之凹部3 1 e內同時，其中間端子3 6之 之穿眼部3 6 c係以穿插於絕緣基板3 1之孔3 1 d之狀 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐） · 5， 4 5749 6 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（3 ) 態，且該穿眼部3 6 c之頂端部穿插於滑動件3 7之孔 37a，並該穿眼部36 c之頂_.端部3 6 d被歛縫’以平 坦之頂端部3 6 d將滑動件3 7之底面壁3 7 b推向絕緣 基板3 1 ，而保持該滑動件3 7可相對於絕緣基板3 1轉 動。 此時，中間端子3 6之底板3 6 a即抵觸於絕_緣基板 3 1之下面3 1 b同時’滑動件之滑動部3 7 f則彈性接 觸於絕緣基板3 1之上面3 1 a所設電阻件3 2 ’而呈隨 著滑動件3 7之轉動’該滑動部3 7 f可滑動於電阻件 3 2上面。 且，具如此構成之晶片型可變電阻器之作動，如將操 作工具之起子3 8 (參照圖1 2 )插入於起子槽3 7 d予 以旋轉操/乍部3 7 e時，角狀部3 7 c與滑動部3 7 f即 同時轉動，促使滑動部3 7 f滑動於電阻件3. 2上以進行 調整電阻値。 其次，就習知晶片型可變電阻器裝設於印刷配線基板 之方法參照圖1 3加以說明，印刷配線基板2 0係呈平板 狀由例如混合玻璃成份之合成樹脂材料所製成，該印刷配 線基板2 0之至少一面乃形成有所盼導電圖案（未圖示） ^且在該印刷配線基板2 0之導電圖案（未圖示）上載置 上述之晶片型可變電阻器。 此時，乃在所定導電圖案上塗抹漿糊狀焊料，將晶片 型可變電阻器之端子3 4及中間端子3 6可連接於該焊料 地予以載置。 (锖先Μ讀背面之注意事項再填寫本頁) 裝—丨—丨訂--------線 本紙張尺度適用令國國家標準（CNS)A4規格（210 X 297公釐） -R - A7 457496 ___B7_____ 五、發明說明（4 ) (請先閱讀背面之注意事項再填寫本頁) 以如此狀態下，將載置晶片型可變電阻器之印刷配，線 基板2 0搬運至反射爐內，以焊接晶片型可變電阻器之端 子3 4，中間端子3 6與印刷配線基板2 0之導電圖案。 此時，漿糊狀焊料即呈將端子3 4、中間端子3 6分 別予以連接於導電圖案之焊料1 3，及自焊料1 3漂浮之 焊料球4 2存在。 且，焊料球4 2尤其位於間隔較小之端子3 4與中間 端子3 6之間時，則導電兩者致無法完成可變電阻器之功 會巨。 在如此晶片型可變電阻器，上述三處焊接部位內之中 間端子3 6之側板3 6 b係最接近於電阻件3 2面內之接 觸面（滑動部3 7 f滑動·時所接觸之領域）。因此在該側 板3 6 b進行焊接時，焊料中之焊劑有時由於表面張力致 超出與絕緣基板3 1間之間隙而上昇至上面3 1 a ，甚至 侵入電阻件3 2之接觸面而產生接觸不良。 經濟部智慧財產局員工消费合作社印製 促使此種接觸不良更爲惡化之原因，尙包含有出貨時 之滑動部3 7 f位置》晶片型可變電阻器通常乃是將滑動 件3 7暫時固定於旋轉中點，亦即滑動部3 7 ί位於弧形 中點並對向側板3 6 b最近之位置予以出貨。就是滑動部 3 7 f位於中點時組合較容易之製造上要求，與裝設及其 後之調整如自該位置開始較有效率之使用上方便性一致， 故一般均如此予以定位。因此對於印刷基板2 0之一對端 子3 4及中間端子3 6之與印刷配線基扳2 0導電圖案之 焊接即以如此狀態進行較多，致在焊接中間端子3 6而焊 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐〉 457496 A7 ______B7 _ 五、發明說明（5 ) 劑侵入於電阻件3 2之接觸面時，最壞則被覆於滑勖部 3 7 f表面，完全變爲敝開電路.。 ί請先閱讀背面之注意事項再填寫本頁) 此種焊劑上昇起因之品質不良，雖在量產技術之逆流 方式（塗抹漿糊狀焊料後在反射爐予以加熱）可藉控制焊 料塗抹量予以防止之，卻在手操作焊接時由於焊料量參差 不齊，致特別容易發生。 ‘ 近年晶片型可變電阻器亦被要求更加小型薄型化•並 已在製作約2 m m四角形程度者，致逆流方式亦已明顯存 在有上述問題。即，極小尺寸之晶片型可變電阻器之電阻 件3 2與側板3 6 b之距離更加縮小*故雖高精密度控制 漿糊狀焊料之塗抹量還是發生電阻件3 2面之焊劑上昇， 其結果導通不良之發生率變高。由於如此狀態，當欲將極 小尺寸晶片型可變電阻器焊接於印刷基板2 0時，逆流方 式理所當然連手操作亦變成對於防止電阻件3.2面之焊劑 上昇需有任何適宜對策。 經濟部智慧財產局員工消费合作社印製 又，習知晶片型可變電阻器由於單純地將端子3 4與 中間端子3 6載置於絕緣基扳3 1之下面.3 1 b之狀態予 以裝設，致在小型之晶片型可變電阻器，間隔小之端子 3 4與中間端子3 6有被焊料球4 2予以導通之問題。 本發明之頭一個目的即在解決上述課題，而提供一種 雖已小型薄型化但在焊接於印刷基板時，不致發生焊劑上 昇至電阻件面之晶片型可變電阻器。 更佳是提供一種可防止焊料球連接端子間之晶片型可 變電阻器。 本紙張尺度適用中國國家標準<CNS)A4規格（210 X 297公釐） -8 - 457496 A7 B7 五、發明說明（6 ) (請先閱讀背面之生意事項再填寫本頁) 又|習知晶片型可變電阻器係歛縫穿眼部3 6 C且以 平坦之頂端部3 6 d將滑動件3.· 7推向絕緣基板3 1予以 裝設，致頂端部3 6 b與滑動件3 7之摩擦力較小，而有 無法提高起子3 8之轉矩之問題，且亦有雖經過一次調整 ，滑動件3 7尙會位置移動之問題。 又，穿眼部3 6 c之孔較小，因此起子3 8先端之插 入較淺，而起子3 8與起子槽3 7 d係止程度不充份，致 在轉動起子3 8時，起子3 8與起子槽3 7 d之係合脫離 ，有調整操作費時之問題。 於是，本發明之另一目的乃在提供一種起子之轉矩較 大，更佳是調整操作容易又確實之晶片型可變電阻器》 對於上述課題之第一解決手段，係在具有：中央部設 貫穿孔且上面形成電阻件之絕緣基板，與配置於上述絕緣 基板上面並滑動於上述電阻件上面之滑動件，.以及藉穿插 固定於該滑動件之貫穿孔而被予以連接之金屬板所成中間 端子之晶片型可變電阻器，將上述中間端子構成爲由底板 ，及在上述絕緣基板外側沿其側面向上曲折之側板所成， 經濟部智慧財產局員工消費合作社印製 且該側板頂端呈較薄，並其頂端與上述側面之間隙呈擴寬 〇 又，第二解決手段係將上述側板構成爲向其頂端以推 拔狀變薄。 又’以第三解決手段係將上述側板構成爲其頂端位置 較低於上述絕緣基板頂面。 又’以第四解決手段係在上述中間端子設有可旋轉地 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） -9 - 457496 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（7 ) 穿插裝設於上述滑動件之貫穿孔之穿眼部，且該中間端子 底板具有設置該穿眼部之凸緣報.及連結該凸緣部與上述側 板之連接部，並在上述凸緣部形成比上述連接部板厚較薄 之薄肉部。 又，以第五解決手段係將上述凸緣部之薄肉部由敲打 加工予以構成。 _ 又，以第六解決手段係將上述凸緣部整體以上述薄肉 部予以構成》 又，以第七解決手段係設成在上述薄肉部表面形成有 絕緣膜之構成。 又，以第八解決手段係設成上述絕緣基板下面形成有 可容納上述中間端子之上述凸緣部及上述連接部之凹部， 並上述薄肉部表面比上述絕緣基板下面更位於上述凹部內 ，而將上述中間端子裝設於上述絕綠基板之構.成。 又，以解決上述課題之第九解決手段，係設成具有： 中央部設一貫穿孔上面形成有電阻件之絕緣基板，與被配 設於上述絕緣基板上面並滑動於上述電阻件上之滑動件， 以及將上述滑動件可旋轉地裝設於上述絕緣基板之穿眼部 ，且上述滑動件略呈惋狀並具有底面壁設有孔之筒狀部及 頂面設有起子槽之操作部，又該滑動件則由較上述穿眼部 更硬之金屬材料所形成，其底面壁之上述孔被穿插上述穿 眼部，復使上述底面壁之上述孔之孔緣部陷入於上述穿眼 部外周面，而將上述滑動件可旋轉地予以裝設之構成。 又1以第十解決手段係設成上述穿眼部之頂端部具頂 本紙張尺度適用中國囷家標準（CNS)A4規格（210 X 297公釐) -10 - * .1 ml----製·！1 訂.11 (請先閱讀背面之注意事項再填寫本頁》 線一! 457496 A7Α7 Β7 V. Description of the invention (1) The present invention relates to a chip-type variable resistor suitable for use in audio equipment, etc. One of the conventional chip-type variable resistors is described below with reference to FIGS. 9 to 13 Previously proposed, Fig. 9 to Fig. 13 all show conventional chip-type variable resistors, of which Fig. 9 is an exploded perspective view, Fig. 10 is a cross-sectional view, and Fig. 11 is an enlarged perspective view of a main part, and Fig. 12 The main section is an enlarged sectional view. Fig. 13 is a sectional view showing a state in which a wafer-type variable resistor is mounted on a printed circuit board. As shown in FIGS. 9 to 13, the insulating substrate 31 is formed of a ceramic material and fired into a rectangular shape, and is formed in a very small size of about 2 mm square, and has a penetration from the top 3 1 a to The bottom 3 1 b is provided with a round counterbore 3 1 d at the center, and the round hole 3 1 d is provided with a recess 3 1 e provided at the upper 3 1 a, and a pair of protrusions protruding from the side 3 1 c. 3 1 f. The resistor 32 is made of, for example, a cermet-based soft paste, and is formed around the concave portion 3 1 e of the upper surface 3 1 a of the insulating substrate 3 1 in a slightly arc shape by a printing or the like. A pair of electrodes 3 3 are made of, for example, silver and glass frit, and are provided on the protrusions 3 1 f covering the upper surface 3 1 a of the insulating substrate 3 1 in a slightly rectangular shape, and are respectively connected to both ends of the resistive element 3 2. , And formed by printing and so on. In addition, the terminal 3 4 is made of a metal plate, has a slightly rectangular bottom plate 3 4 a, and a pair of pins 34b, 34c that are orthogonal to the bottom plate and are bent upward from the edges of adjacent sides. (Please read the notes on the back before filling out this page) ---- 丨 Order · -------- '^ · The paper standard printed by the Employee Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies the national standard ( CNS) A4 specification (210 x 297 mm) -4-A7 B7 V. Description of the invention (2) and the bottom plate of terminal 3 4 3 4 a is in contact with the bottom of insulating substrate 3 1 3 1 b, pin 3 4 b, 3 4. · c orthogonal to the insulating substrate 3 1 corner < Jing first read all the items on the back and then fill out this page) part 3 1 c is set along the adjacent sides, and pins 3 4 b, 34c top It is zigzag on the upper surface 3 1 a side of the insulating substrate 31, and the terminal 3 4 is mounted on the insulating substrate 31. The electrodes 3 3 and the terminals 3 4 are soldered by the solder 9 and are fixed to each other. In addition, the middle terminal 36 is a bottom plate 3 6 a having a slightly rectangular shape, and the end is cut to a side plate 3 6 b standing upright from the bottom plate 3 6 a, and a circle set upwardly is extended at the middle portion of the bottom plate 3 6 a. The cylindrical penetrating portion 3 6 c 〇 The intermediate terminal 36 is in contact with the bottom surface 3 1 b of the insulating substrate 3 1 with its bottom plate 3 6 a, and the penetrating portion 3 6 c is inserted in the hole 3 1 of the insulating substrate 3 1 d, and the side plate 3 6 b is arranged in a state where the undercut portion provided along the side surface 3 1 c of the insulating substrate 3 1 extends to the upper surface 3 1 a. The sliding member 3 7 printed by the employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is made of a metal plate and is pressed into a drawing plate shape, and contains a bowl-shaped cylindrical portion with a bottom wall 3 7 b with a hole 3 7 a 3 7 c, and an operating part 3 7 e having a cross-shaped screwdriver groove 3 7 d formed on the cylindrical part 3 7 c by bending the top part of the cylindrical part 3 7 c, and a self-tubular shape The outer periphery of the portion 3 7 c extends downwardly in a slightly V-shaped sliding portion 3 7 f. The cylindrical portion 3 7 c of the slider 3 7 is arranged in the recessed portion 3 1 e of the insulating substrate 3 1 as shown in FIG. 12. At the same time, the penetrating portion 3 6 c of the intermediate terminal 3 6 is inserted. In the hole 3 1 d of the insulating substrate 3 The paper size applies the Chinese National Standard (CNS) A4 specification (210 x 297 mm) · 5, 4 5749 6 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 5 State of the invention (3) state, and the top portion of the eye-piercing portion 3 6 c is inserted into the hole 37 a of the slider 37, and the top of the eye-piercing portion 36 c _. The end portion 3 6 d is caulked 'to The flat top end 3 6 d pushes the bottom wall 3 7 b of the slider 37 to the insulating substrate 3 1, and keeps the slider 3 7 rotatable relative to the insulating substrate 31. At this time, the bottom plate 3 6 a of the intermediate terminal 36 is in contact with the lower surface 3 1 b of the insulating substrate 3 1 and the sliding portion 3 7 f of the slider is in elastic contact with the upper surface 3 1 a of the insulating substrate 3 1 It is assumed that the resistance element 3 2 ′ is in accordance with the rotation of the slider 37, and the sliding portion 3 7 f can slide on the resistance element 3 2. In addition, when the wafer-type variable resistor having such a structure is operated, for example, when a screwdriver 3 8 (refer to FIG. 12) of an operation tool is inserted into the screwdriver groove 3 7 d and the rotary operation is performed / the first portion 3 7 e, the angular portion 3 7 c and the sliding portion 3 7 f rotate at the same time, and the sliding portion 3 7 f is caused to slide on the resistor 3.2 to adjust the resistance 値. Next, a method for mounting a conventional chip-type variable resistor on a printed wiring board will be described with reference to FIG. 13. The printed wiring board 20 is a flat plate made of, for example, a synthetic resin material mixed with glass components. A conductive pattern (not shown) is formed on at least one side of the wiring substrate 20, and the above-mentioned wafer-type variable resistor is placed on the conductive pattern (not shown) of the printed wiring substrate 20. At this time, paste-like solder is applied to a predetermined conductive pattern, and terminals 34 and intermediate terminals 36 of the wafer-type variable resistor can be connected to the solder and placed. (锖 Please read the precautions on the back before filling this page) Loading— 丨 — 丨 Ordering -------- The size of thread paper is applicable to the national standard (CNS) A4 (210 X 297 mm)- R-A7 457496 ___B7_____ 5. Description of the invention (4) (Please read the precautions on the back before filling this page) In this state, move the printed circuit board on which the chip-type variable resistor is placed, and transfer the wire substrate 20 to the reflection In the furnace, the conductive patterns of the terminals 3 4, the intermediate terminals 36, and the printed wiring board 20 of the wafer-type variable resistor are soldered. At this time, the paste-like solder exists as the solder 13 connecting the terminal 3 4 and the intermediate terminal 36 to the conductive pattern, and the solder ball 4 2 floating from the solder 13. In addition, when the solder ball 42 is located between the terminal 34 and the intermediate terminal 36 which are relatively small in space, the conductive two cannot perform the function of the variable resistor. In such a chip-type variable resistor, the side plate 3 6 b of the intermediate terminal 3 6 in the three soldering positions is closest to the contact surface within the 2 surface of the resistive element (the sliding portion 3 7 f contacts when sliding field). Therefore, when the side plate 3 6 b is soldered, the flux in the solder sometimes rises to the upper surface 3 1 a due to the surface tension beyond the gap with the insulating substrate 31, and even intrudes into the contact surface of the resistive element 3 2 to make contact. bad. Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs to promote the worsening of this poor contact, including the slide part 3 7 f position at the time of shipment, the chip-type variable resistor is usually a temporary slide 3 7 It is fixed at the midpoint of rotation, that is, the sliding part 3 7 ί is located at the midpoint of the arc, and the position closest to the side plate 3 6 b is shipped. That is, the requirements for easier assembly when the sliding part 3 7 f is located at the midpoint are consistent with the convenience of installation and subsequent adjustments if it is more efficient to use from that position, so it is generally positioned as such. Therefore, for one of the printed substrate 20, the terminal 3 4 and the intermediate terminal 36 are welded to the printed wiring base plate 20 conductive pattern in this state, so that the intermediate terminal 36 is welded and the paper size is suitable. China National Standard (CNS) A4 specification (210 X 297 mm) 457496 A7 ______B7 _ V. Description of the invention (5) When the agent penetrates the contact surface of the resistor 32, the worst is covered on the surface of the sliding part 3 7 f It is completely turned into an open circuit. Ί Please read the precautions on the back before filling in this page.) The quality of this flux rise is not good, although it is in the countercurrent method of mass production technology (after applying paste solder in a reflex furnace) Heating) can be prevented by controlling the amount of solder applied, but it is particularly prone to occur due to the uneven amount of solder when soldering by hand. ‘In recent years, chip-type variable resistors have also been required to be smaller and thinner. • Those who are already making quadrilaterals of about 2 mm in diameter have the above-mentioned problems caused by the countercurrent method. That is, the distance between the resistive element 3 2 and the side plate 3 6 b of the wafer-type variable resistor of a very small size is further reduced. * Although the amount of paste solder is controlled with high precision, the flux on the resistive element 3 2 surface rises. As a result, the incidence of poor conduction becomes high. Because of this state, when it is desired to solder extremely small-sized wafer-type variable resistors to the printed circuit board 20, the countercurrent method, as a matter of course, also becomes a necessary countermeasure for preventing the flux on the 3.2 side of the resistor from rising. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the conventional chip-type variable resistor is simply mounted with the terminals 3 4 and the intermediate terminals 36 under the insulating base plate 31. The state of 3 1 b is installed. It is assumed that, in a small chip-type variable resistor, the terminal 3 4 and the intermediate terminal 36 having a small interval have a problem of being conducted by the solder ball 4 2. A first object of the present invention is to solve the above-mentioned problems, and to provide a wafer-type variable resistor that does not cause solder flux to rise to the surface of a resistive element when soldered to a printed circuit board, although it has been reduced in size and thickness. It is more preferable to provide a chip-type variable resistor which prevents solder ball connection terminals. This paper size applies the Chinese National Standard < CNS) A4 specification (210 X 297 mm) -8-457496 A7 B7 V. Description of the invention (6) (Please read the business matters on the back before filling this page) Also | The chip-type variable resistor is sewn through the eye portion 3 6 C and pushes the slider 3. · 7 toward the insulating substrate 3 1 with a flat tip portion 3 6 d so that the tip portion 3 6 b and the slider are installed. The friction force of 3 7 is small, and there is a problem that the torque of the screwdriver 3 8 cannot be increased, and there is also a problem that the position of the slider 3 7 will move even though it is adjusted once. In addition, the hole through the eye 3 6 c is small, so the tip of the screwdriver 3 8 is shallowly inserted, and the screwdriver 38 and the screwdriver groove 3 7 d are not sufficiently locked. When the screwdriver 3 8 is rotated, the screwdriver 3 The disconnection between 8 and the screwdriver slot 3 7 d has the problem of time-consuming adjustment operation. Therefore, another object of the present invention is to provide a chip-type variable resistor having a large torque of a screwdriver, and more preferably an easy and reliable adjustment operation. The first solution to the above-mentioned problem is to have: a central portion An insulating substrate provided with a through hole and a resistive element formed thereon, a sliding member disposed on the insulating substrate and sliding on the resistive member, and a metal plate connected by inserting and fixing the through hole of the sliding member A chip-type variable resistor that forms an intermediate terminal. The intermediate terminal is composed of a bottom plate and a side plate that bends upward along the side of the insulating substrate. It is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and the top of the side plate. It is thin, and the gap between the top end and the side surface is widened, and the second solution means is to form the side plate to be thinner in a push shape toward the top end. The third solution is to configure the side plate so that its top end position is lower than the top surface of the insulating substrate. And 'the fourth solution is to have a rotatable ground paper on the middle terminal. The standard is Chinese National Standard (CNS) A4 (210 X 297 public love). -9-457496 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (7) The eye-penetrating portion provided in the through hole of the sliding member is inserted, and the intermediate terminal bottom plate has a flange provided with the eye-penetrating portion, and the flange connecting the flange portion with the side plate. The connecting portion is formed with a thin meat portion having a thinner thickness than the connecting portion at the flange portion. In a fifth solution, the thin meat portion of the flange portion is formed by beating. _ The sixth solution means is to configure the entire flange portion with the thin meat portion. The seventh solution means is to use a structure in which an insulating film is formed on the surface of the thin meat portion. Furthermore, the eighth solution means is provided that a recessed portion capable of accommodating the flange portion and the connection portion of the intermediate terminal is formed on the lower surface of the insulating substrate, and the surface of the thin portion is located in the recessed portion than the lower surface of the insulating substrate, and The intermediate terminal is mounted on the green insulation substrate. In addition, in a ninth solution means for solving the above-mentioned problem, it is provided with: an insulating substrate having a resistive element formed on a central portion thereof through a through hole, and a sliding member arranged on the insulating substrate and sliding on the resistive element And the slider is rotatably installed on the eyelet portion of the insulating substrate, and the slider is slightly cymbal-shaped and has a cylindrical portion with a hole on the bottom surface wall and an operating portion with a screwdriver groove on the top surface, The slider is made of a harder metal material than the eyelet, and the hole in the bottom wall is inserted into the eyelet, so that the edge of the hole in the hole in the bottom wall is trapped in the eyelet. The outer peripheral surface is configured by rotatably mounting the slider. Another tenth solution is to set the top end of the eye-piercing part with the top paper. The size of the paper is applicable to the Chinese standard (CNS) A4 (210 X 297 mm) -10-* .1 ml ---- system·! 1 Order. 11 (Please read the precautions on the back before filling out this page "Line 1! 457496 A7
五、發明說明（8 ) 端擴大之傾斜狀部’且使上述底面壁之上述孔之孔緣部陷 入於該傾斜狀部外周面之構成v 又’以第十一解決手段係設成上述傾斜狀部之根部比 上述底面壁對於上述絕緣基板之抵觸位置更位於上述絕緣 基板下面側之構成。 又’以第十二解決手段係設成上述穿眼部之傾斜狀部 內周面具有可容許插入調整用工具之空間之構成。 又’以第十三解決手段係設成上述傾斜狀部之根部比 上述底面壁對上述絕緣基板之抵觸位置更位於上述絕緣基 板下面側之構成。 又’以第十四解決手段係設成與上述穿眼部軸向呈直 交方向之上述起子槽最外周部與上述傾斜狀部頂部間之長 度比及上述穿眼部軸向之上述操作部頂部與上述傾斜狀部 頂部間之長度爲短之構成。 又，以第十五解決手段係設成上述穿眼部與中間端子 呈一體成形之構成。 茲就本發明晶片型可變電阻器之實施例參照圖1〜圖 8加以說明。圖1〜圖8均爲顯示本發明晶片型可變電阻 器，其中，圖1爲立體分解圖，圖2爲立體圖，圖3爲俯 視圖，圖4爲側面圖，圖5爲底視圖，圖6爲圖3之b-b線剖面圖，圖7爲主要部份擴大剖面圖，圖8爲晶片型 可變電阻器之裝設於印刷基板之狀態剖面顯示圖。 如圖1〜圖8所示，絕緣基板1係由陶瓷材料所成’ 被煅燒加工爲略矩形，呈約2 m m角形之極小型尺寸之構 (請先閲讀背面之注意事項再填寫本頁) 裝 ----訂---------線 經濟部智慧財產局貝工消费合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -11 - 4 5 7 4 9 6 A7 B7 五、發明說明（9 ) 成’且具有設於中心部自上面1 a貫穿至下面1 b之圓形 貫穿孔1 d ’與自側面1 c突出之一對突部]_ f ，與設於 突部1 f下面之凹部1 g，以及含貫穿孔1 c之位置被設 於下面1 b之矩形狀凹部1 h。 電阻件2乃例如由金屬陶瓷系軟漿等所成，藉印刷等 以略弧形狀被形成於絕緣基板1之上面1 a之貫穿_孔1 d 〇 一對電極3則直交與電阻件2被配置於絕緣基板1之 相鄰側面1 c所形成轉角部近傍，且例如由銀與玻璃料所 成，以略矩形被設於絕緣基板1之上面1 a之突部1 f上 ，並分別連接於電阻件2雨端，以印刷等予以形成。 又，端子4係由金屬板所成，而且有底板4 a，與直 交於底板4 a自相鄰兩側面分別向上曲折之一對引腳4 b 、4c。 該端子4之底板4 a即抵觸於絕緣基板1之凹部1 g 之下面lb，引腳4b、4 c乃直交與絕緣基板1轉角部 沿相鄰兩側面1 c被予以配設，該引腳4 b、4 c之頂端 部更被曲折於絕緣基板1之上面1 a側’而如此將該端子 4裝設於絕緣基板1 » 且將電極3與端子4由焊料9予以焊接促使互相連接 固定。 又，中間端子6則由較柔軟鋼材等所構成’而具有略 長方形之底板6 a ’與自底板6 a —端向上切割豎起之側 板6 b，以及自底板6 a向上予以引伸加工所成之圓筒狀 本紙張尺度適用中國國家標準（CNS>A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝----丨丨訂- - -------線Ί' 經濟部智慧財產局員工消費合作社印製 -12- 457496 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（1〇 ) 穿眼部6 C。該底板6 a又具有由敲打加工予以形成之薄 肉部所成之略矩形凸緣部6 e .及連接於該凸緣部6 e延 伸至側板6 b之比該凸緣部6 e原肉之連接部6 ί 。 在本實施例，係藉將側板6 b之頂端部自斜向予以敲 打加工，如圖6所示促使頂端部之與側面1 c對向之板面 呈推拔狀而予以設成較薄a藉此與側面1 c間之間隙（圖 b A尺寸）比及習知例變爲更寬。且側板6 b之高度被設 成電阻件頂面之上面1 a爲低，故於垂直方向亦將側板 6b與電阻件2頂面之距離予以拉大。 又中間端子6乃以凸緣部6 e與連接部6 f位於絕緣 基板1之下面1 b之凹部1 h內’抵觸於該下面1 b ’並 穿眼部6 c穿插於絕緣基板1之貫穿孔1 d ’以及側板 6 b沿絕緣基板1之側面1 c所設欠口部向上面1 a延伸 之狀態被予以配置。 滑動件7則由較中間端子6更硬之不銹鋼等金屬板予 以形成，被引伸加工成圓板形狀，而含有設有孔？ a之底 面壁7b之椀狀筒狀部7c ，與筒狀部7c頂部一部份被 曲折並具有被配置於筒狀部7 c頂面之十字狀起子槽7 d 之操作部7 e ，以及自角狀部7 c外周向下延伸之略呈V 字形之滑動部7 f 。 該滑動部7之筒狀部7 c係被配置於絕緣基板1之上 面1 a同時，中間端子6之穿眼部6 c乃以穿插於絕緣基 板1之貫穿孔1 d之狀態，將其頂端部穿插於滑動件7之 孔7 a 。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱〉 -13 - --- ------I L- ------I ------^\^w— (请先閲讀背面之注意事項再填寫本頁) 4 57 4 9 6 A7 B7 五、發明說明（11 ) 且，穿眼部6 c之頂端部可形成傾斜狀部6 g地被推 開，滑動件7藉被歛縫於絕緣碁板1而可轉動地被保持_ 接於中間端子6。 又，滑動件7藉穿眼部6 c之傾斜狀部6 g _被裝設於 絕緣基板1時，即如圖7所示，呈由較滑動件7更軟材料 所成之傾斜狀部6 g外周面被底面壁7 b之孔7 a ^之邊緣 部加以凹陷之狀態。 又，將傾斜狀部6 g之根部6 h設於比底面壁7 b抵 觸於絕緣基板1之位置更位靠近絕緣基板1之下面1 b位 置，俾使穿眼部6 c之孔j之頂部較寬且深同時，亦使穿 眼部6 c軸向之操作部7 e頂部至傾斜狀部6 g之頂部 6 k間之長度L 1較大於與該軸向呈直交方向之起子槽7 d最外周部與傾斜狀部6 g之頂部6 k間長度L 2，而提 高起子8之對於起子槽7d之卡合度。 又，此時中間端子6之凸緣部6 e之薄肉部則位於絕 緣基板1之凹部1 h內，呈該薄肉部之表面比絕緣基板1 之下面1 b更凹入於凹部1 h內側之狀態，並將由絕緣材 料所成之絕緣膜1 0形成於凸緣部6 e表面及穿眼部6 c 之孔內。 ‘ 且將該絕緣膜1 0設成位於絕緣基板1之凹部1 h內 ，至少與下面1 b呈一平面同時，更設於靠近端子4之中 間端子6部位。 又，該絕緣膜1 0雖可形成於凸緣部6 e之全表面， 且在本實施例雖將凸緣部6 e全體設成薄肉部，唯將薄肉 Γ清先閱磧背面之項再填寫本頁 裝！ —訂*11 線一ί丨 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐〉 -14 - 457496 A7 B7 五、發明說明（12 ) 部設於凸緣部6 b外周邊一部份，尤其設於靠近端子4之 部份亦可。 .· (清先閲讚背面之生意事項再填寫本頁) 具有如此構造之晶片型可變電阻器之動作乃呈當將操 作工具之起子8插入於起子槽7 d旋轉操作部7 e時 > 筒 狀部7 c與滑動部7 f即同時轉動，該滑動部7 f則滑動 於電阻件2上以進行電阻値之調整。 在進行調整時，由於傾斜狀部6 g外周面被陷入底面 壁7 b之孔7 a之孔緣部，致可增大起子8之轉矩，且由 於傾斜狀部6 g之存在，致可使穿眼部6 c之孔6 j頂部 變寬又深，而能使起子8插入更深以加深起子8與起子槽 7 d之卡合度同時，藉長度L 1大於長度L 2可使起子8 不致抵觸於頂部6 k深深地插入，以提昇起子8與起子槽 7 d之卡合程度。 經濟部智慧財產局員工消費合作社印製 其次*參照圖8說明本發明晶片型可變電.阻器裝設於 印刷配線基板之方法。該印刷配線基板2 0係由例如混入 玻璃樹脂材料等予以形成爲平板狀，在該印刷配線基板 20之至少一面形成有所盼之導電圖案（未圖示）。且在 該印刷配線基板2 0之導電圖案上載置上述晶片型可變電 阻器。 此時，先在所定導電圖案上塗抹漿糊狀焊料（未圖示 ).，將晶片型可變電阻器之端子4與中間端子6可連接於 該漿糊狀焊料予以載置。 以如此狀態，將載置有晶片型可變電阻器之印刷配線 基板2 0搬運至反射爐內，使晶片型可變電阻器之端子4 本紙張尺度適用中國國家標準（CNS)A4规格（210 X 297公釐） -15 - 在 57496 A7 B7 五、發明說明（13 ) 及中間端子6焊接連結於印刷配線基板2 0之導電圖案。 (請先閱讀背面之注意事項再填寫本頁) 此時之漿糊狀焊料乃以將竭.子4、中間端子6分別連 接於導電圖案之焊料1 3與自焊料1 3漂浮之焊料球之狀 態存在。 但，由於設有絕緣膜1 0，致中間端子6之薄肉部與 端子4之間均無附著焊料球，而可防止端子4與中'間端子 6導通。 :★ 10 又在上述實施例雖設置絕緣φ ，但亦可省略之，此 時由於中間端子6之原肉部之連6 f及端子4底面被 載置於導電圖案，致薄肉部之凸緣部6 e呈自印刷基板 2 0表面上浮之狀態，故可使焊料球較少附著於凸緣部 6 e之薄肉部，而可防止端子4與中間端子6之導通。 又，在絕緣基板1設置凹部1 h，將中間端子6之凸 緣部6 e與連接部6 f定位於凹部1 h內時，.即呈凸緣部 6 e之薄肉部與端子4間存在有絕緣基板1 一部份’致中 間端子6之薄肉部與端子4間更不存在焊料球之附著，而 可防止端子4與中間端子6之導通。 經濟部智慧財產局貝工消費合作社印製 又在上述實施例，雖以擴大側板6 b與側面1 c之間 隙之方法將側板6 b之對向於側面1 c之板面頂端部予以 敲打加工，但並非限定於此，例如只要頂端部予以切削形 成較薄，則雖非推拔狀呈段差狀亦無妨。且側板6 b高度 過低時，在固定•連接無法形成足夠大之焊接嵌條’故宜 確保0.4mm以內高差較妥。 在此，側板6 b之曲折角度並不一定需要角度亦可。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -16- 457496 A7 B7 五、發明說明（14 ) (請先閱讀背面之注意事項再填窝本頁) 雖爲擴大與側面1 c之間隙以曲折或更淺角度較有利，唯 反之’卻有外形尺寸變大，不易_.以自動固定裝置予以把持 ’自搬送帶取出時會卡住，等之欠點。因此曲折角度只要 在不發生上述問題範圍內之略直角即可。 又在上述實施例雖說明與中間端子6 —體形成穿眼部 6 c之例示，但將穿眼部6 c別與中間端子6另外‘形成亦 可。 又在本實施例雖將設有起子槽7 d之操作部7 e與筒 狀部7 c —體之板材予以曲折形成之，但在角狀部7 c直 接設置起子槽7 d予以形成宜可。 經濟部智慧財產局員工消費合作社印製 如上說明，本發明之晶片型可變電阻器係藉將最接近 於電阻件2之中間端子6 b之側扳6 b頂端部予以設成較 薄，而促使絕緣基板1與側面1 c之間隙寬度擴大。並藉 此防止當在焊接側板6 b時，焊接中之焊劑由.於表面張力 超出間隙上昇至上面1 a。因此焊劑不易侵入電阻件2之 接觸面，可減低焊劑附著引起接觸不良“又如將側板6 b 頂端部設成低於上面1 a ，則在垂直方向可增大電.阻件2 與側板6 b之距離，可更加提昇防止焊劑上昇之效果。又 本發明由於上述側板6 b开彡狀而亦具有容易將第二端子6 裝設於基板1之效果。 又如上述本發明之晶片型可變電阻器係在中間端子6 之凸緣部6 e設有板厚較連接部6 f薄之薄肉部’故可使 薄肉部之凸緣部6 e呈自印刷基板2 0表面上浮之狀態’ 以致凸緣部6 e之薄肉部之焊料球附著趨小’而可防止端 本紙張尺度適用+國國家標準（CNS)A4規格（210 X 297公釐） -17 · S Αα 經濟部智慧財產局員工消費合作社印製 7496 A7 ____B7_____ 五、發明說明（15 ) 子4與中間端子6之導通。 又凸緣部6 e之薄肉部由於·藉敲打加工予以形成，其 加工頗爲簡單，而具有良好之生產性。 又凸緣部6 e整體被形成爲薄肉部，致可更加防止端 子4與中間端子6之導通。 又在薄肉部表面形成絕緣膜1 0，故可防止端‘子4與 中間端子6之導通，而能予以薄型化。 又在絕緣基板1之下面1 b設有可容納中間端子6之 凸緣部6 e與連接部6 f之凹部1 h，且薄肉部表面比絕 緣基板1之下面1 b更位於凹部1 h內，而將中間端子6 裝設於絕緣基板1 >致凸緣部6 e之薄肉部與端子4間存 在絕緣基板1 —部份，中間端子6之薄肉部與端子4間並 無焊料球，故可防止端子4與中間端子6之導通。 又本發明晶片型可變電阻器係將滑動件7 .由比穿眼部 ^ c更硬金屬材料予以形成，其底面壁7 b之孔7 a被穿 插穿眼部6 c，且使底面壁7 b之孔7 a之孔緣部陷入於 穿眼部6 c之外周面以可旋轉地裝設滑動件7，故可增大 滑動件7與穿眼部6 c間之摩擦力，而提供起子8轉矩較 大之晶片型可變電阻器。 又穿眼部6 c設有其頂部擴開之傾斜狀部6 g，促使 底面壁7 b之孔7 a之孔緣部陷入於該傾斜狀部6 g外周 面1故能容易提供轉矩較大之晶片型可變電阻器。 又將傾斜狀部6 g之根部6 h疋位於比底面壁7 b之 抵觸於絕緣基板1之位置更靠近絕緣基板1之下面1 b之 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） <請先閱讀背面之注意事項再填寫本頁) 裝！ —訂·！-線 )-. -18 - 457496 A7 B7 五、發明說明（16 ) 位置’故可使底面壁7 b之孔7 a之孔緣確實地凹陷於傾 斜狀部6 g外周面，而容易提供、晶片型可變電阻器。 又傾斜狀部6 g內周面設有容許起子8插入之空間’ 其穿眼部6 c之孔6 j頂部呈寬且深，故可將起子8插入 更深以加深起子8與起子槽7 d之卡合後，而提供調整操 作容易又確實之晶片型可變電阻器。 ' 又傾斜狀部6 g之根部6 h比底面壁7 b抵觸於絕緣 基板1之位置更位於靠近絕緣基板1之下面1 b側之位置 ，致可更深深地插入起子8，而提供調整操作更容易且確 實之晶片型可變電阻器。 又將穿眼部6 c軸向之操作郜7 e頂部與傾斜狀部6 g之頂部6 k間之長度L 1設成較大於與軸向呈直交方向 之起子溝7 ci最外周部與傾斜狀部6 k間之長度L '2，致 可深深插入起子8以提昇起子8與起子槽7 d.之卡合度’ 而提供調整作業容易且確實之晶片型可變電阻器。 又由於將穿眼部6 c與中間端子6 —體形成’故另件 數目較少，而可提供生產性良好之晶片型可變電阻器。 ----------- 裝------- -訂---------線^* <請先閲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 圖 解 分 ΜΉΠ 立 之 阻 電 變 可 型 片 3 晶 說發 單本 簡爲 之 1 示圖 圖 圖 圖圖圖 體視視視 立俯側底 之之之之 器器器器 阻阻阻阻 電電電電 變變變變 可 可可可 型型型型 片 片片片 晶晶晶晶 月 月 月 月 印 發發發發 本本本本 爲爲爲爲 2 3 4 5 圖 圖圖圖 -19 - 本紙張尺度適用中關家標準(CNS)A4規格（210 X 297公釐） 457 4 9 ⑤ A7 B7 五、發明說明（17 ) ^=¾ BS面圖。 圖7爲本發明晶片型可變電_.阻器之主要部份擴大剖面 圖》 圖8爲將本發明晶片型可變電阻器裝設於印刷基板之 狀態之剖面顯示圖。 圖9爲習知晶片型可變電阻器之立體分解圖。· 圖1 〇爲習知晶片型可變電阻器之剖面圖。 圖1 1爲習知晶片型可變電阻器之要部擴大立體圖。 圖1 2爲習知晶片型可變電阻器之要部擴大剖面圖。 圖1 3爲將習知晶片型可變電阻器裝設於印刷基板之 狀態剖面顯示圖。 〔符號之說明〕 (請先閱讀背面之注意事項再填窝本頁) 經濟部智慧財產局員工消費合作社印製 絕緣基板 a 上面 b 下面 c 側面 d 孔 f 一對凸部 g 凹部 h 凹部 電阻件 3 電極 4 端子 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -20 - 裝--------訂--------線wy 4 5 7 4 9 6 A7 B7 五、發明說明（18 ) 經濟部智慧財產局員工消費合作社印製 4 a 底板 4 b、4 1 c 引腳 6 中間端子 6 a 底板 6 b 側板 6 c 穿眼部 6 e 凸緣部 6 f 連接部 6 g 傾斜狀部 6 h 根部 6 j 孔 6 k 頂部 7 滑動件 7 a 孔 7 b 底面壁 7 c 筒狀部 7 d 起子槽 7 e 操作部 7 f 滑動部 8 起子 9 焊料 1 0 絕緣膜 1 3 焊料 2 0 印刷配線基板 ----- -----I ^ ill— —--—---I 1 ! ^ W— (請先閱讀背面之泫意事項再填窝本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -21 -V. Description of the invention (8) A structure in which an inclined portion with an enlarged end is formed, and the edge of the hole of the hole in the bottom wall is trapped in the outer peripheral surface of the inclined portion. The root portion of the shaped portion is configured to be located on the lower surface side of the insulating substrate than the bottom surface wall is in contact with the insulating substrate. In addition, the twelfth solution means is configured such that the inner peripheral surface of the inclined portion of the eye-piercing portion has a space allowing the adjustment tool to be inserted. Furthermore, according to a thirteenth solution, the root portion of the inclined portion is located on the lower side of the insulating substrate than the bottom surface wall is in contact with the insulating substrate. Also by a fourteenth solution, the length ratio between the outermost peripheral portion of the screwdriver groove and the top of the inclined portion perpendicular to the axial direction of the eye-piercing portion and the top of the operating portion in the axial direction of the eye-piercing portion The length from the top of the inclined portion is short. The fifteenth solution means is a structure in which the above-mentioned eyelet portion and the intermediate terminal are integrally formed. An embodiment of the wafer-type variable resistor of the present invention will be described with reference to FIGS. 1 to 8. 1 to 8 each show a chip-type variable resistor of the present invention, wherein FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view, FIG. 3 is a top view, FIG. 4 is a side view, FIG. 5 is a bottom view, and FIG. FIG. 3 is a cross-sectional view taken along line bb in FIG. 3, FIG. 7 is an enlarged cross-sectional view of a main part, and FIG. 8 is a cross-sectional view showing a state where a chip-type variable resistor is mounted on a printed circuit board. As shown in Figure 1 ~ 8, the insulating substrate 1 is made of ceramic material. It is calcined into a slightly rectangular shape with an angle of about 2 mm. (Please read the precautions on the back before filling in this page.) Binding ---- Order --------- Printed by the Bureau of Intellectual Property of the Ministry of Economic Affairs, Shellfish Consumer Cooperative, this paper is sized to the Chinese National Standard (CNS) A4 (210 X 297 mm) -11-4 5 7 4 9 6 A7 B7 V. Description of the invention (9) It has a circular through hole 1 d 'formed in the central part from the top 1 a to the bottom 1 b and a pair of protrusions protruding from the side 1 c ] _ f, and a recessed portion 1 g provided below the protrusion 1 f, and a rectangular recessed portion 1 h provided at a position including a through hole 1 c below 1 b. The resistive element 2 is made of, for example, a cermet-based soft paste, and is formed in a slightly arc shape on the insulating substrate 1 by printing, etc. 1 a through-hole 1 d 〇 A pair of electrodes 3 intersect the resistive element 2 orthogonally It is arranged near the corner formed by the adjacent side surface 1 c of the insulating substrate 1, and is made of, for example, silver and glass frit, and is provided in a slightly rectangular shape on the protrusion 1 f of the upper surface 1 a of the insulating substrate 1, respectively. It is connected to the rain end of the resistor 2 and is formed by printing or the like. In addition, the terminal 4 is made of a metal plate and has a bottom plate 4a, and a pair of pins 4b, 4c which are bent upward from the two adjacent sides respectively perpendicular to the bottom plate 4a. The bottom plate 4 a of the terminal 4 is abutted against the bottom lb of the recessed portion 1 g of the insulating substrate 1, and the pins 4 b and 4 c are orthogonal to the corner portion of the insulating substrate 1 along the adjacent two side surfaces 1 c. The top ends of 4 b and 4 c are twisted to the top 1 a side of the insulating substrate 1 and the terminal 4 is thus mounted on the insulating substrate 1 », and the electrode 3 and the terminal 4 are soldered by solder 9 to promote mutual connection and fixation . In addition, the intermediate terminal 6 is made of softer steel and the like, and has a slightly rectangular bottom plate 6 a ′, and a side plate 6 b cut up from the bottom of the bottom plate 6 a at one end, and extended from the bottom plate 6 a upwardly. The size of the cylindrical paper is applicable to the Chinese national standard (CNS > A4 size (210 X 297 mm) (Please read the precautions on the back before filling out this page)) ---- 丨 丨 Order------ --- Line 'Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-12- 457496 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (1) Penetrating 6 C. The base plate 6 a It also has a slightly rectangular flange portion 6 e formed by a thin meat portion formed by a tapping process, and a connecting portion 6 connected to the flange portion 6 e extending to the side plate 6 b than the flange portion 6 e of the raw meat. In this embodiment, the top end portion of the side plate 6 b is tapped from the oblique direction, and as shown in FIG. 6, the surface of the top plate opposite to the side surface 1 c is pushed to form a thin shape, and is made thinner. The gap between a and the side 1 c (size b in Figure b) becomes wider than the conventional example. And the height of the side plate 6 b The top 1 a of the top surface of the resistance element is set to be low, so the distance between the side plate 6b and the top surface of the resistance element 2 is also extended in the vertical direction. The intermediate terminal 6 is located at the flange portion 6 e and the connection portion 6 f. The recess 1 h of the lower surface 1 b of the insulating substrate 1 is in contact with the lower surface 1 b ′ and penetrates the eye portion 6 c through the through hole 1 d ′ of the insulating substrate 1 and the side plate 6 b is located along the side 1 c of the insulating substrate 1. It is assumed that the undercut portion is extended to the upper side 1 a. The slider 7 is formed of a metal plate such as stainless steel which is harder than the intermediate terminal 6 and is processed into a circular plate shape by extension. The bowl-shaped cylindrical portion 7c of the bottom surface wall 7b is bent partly with the top of the cylindrical portion 7c and has an operating portion 7e of a cross-shaped screwdriver groove 7d arranged on the top surface of the cylindrical portion 7c, and an angle The shaped portion 7 c is a slightly V-shaped sliding portion 7 f extending downward from the outer periphery. The cylindrical portion 7 c of the sliding portion 7 is arranged on the upper surface 1 a of the insulating substrate 1, and the eyelet portion 6 of the intermediate terminal 6 c is inserted into the through hole 1 d of the insulating substrate 1, and the top end portion is inserted into the hole 7 a of the slider 7. Degree Applicable to China National Standard (CNS) A4 Specification (210 X 297 Public Love) -13---- ------ I L- ------ I ------ ^ \ ^ w— (Please read the precautions on the back before filling in this page) 4 57 4 9 6 A7 B7 V. Description of the invention (11) And the top part of the eye-piercing part 6 c can be slanted and pushed 6 g away, and slide The piece 7 is held rotatably by being caulked to the insulation panel 1 and connected to the intermediate terminal 6. In addition, when the slider 7 passes through the inclined portion 6 g of the eye portion 6 c _ and is mounted on the insulating substrate 1, as shown in FIG. 7, the inclined portion 6 is made of a softer material than the slider 7. g The outer peripheral surface is recessed by the edge portion of the hole 7 a ^ of the bottom wall 7 b. The root 6 h of the inclined portion 6 g is located closer to the lower surface 1 b of the insulating substrate 1 than the bottom wall 7 b abuts against the insulating substrate 1, and the top of the hole j penetrating the eye portion 6 c is set. Wider and deeper, at the same time, the length L 1 between the top of the operating portion 7 e in the axial direction of the penetrating portion 6 c and the top 6 k of the inclined portion 6 g is larger than the screwdriver groove 7 d orthogonal to the axial direction. The length L 2 between the outermost peripheral portion and the top portion 6 k of the inclined portion 6 g increases the engagement of the driver 8 with the driver groove 7 d. At this time, the thin meat portion of the flange portion 6 e of the intermediate terminal 6 is located in the recess 1 h of the insulating substrate 1, and the surface of the thin meat portion is more recessed in the recess 1 h than the lower surface 1 b of the insulating substrate 1. State, and an insulating film 10 made of an insulating material is formed in a hole on the surface of the flange portion 6 e and the penetrating portion 6 c. ‘And the insulating film 10 is provided in the recess 1 h of the insulating substrate 1, at least at the same time as a plane with the lower surface 1 b, and is further provided near the middle terminal 6 of the terminal 4. In addition, although the insulating film 10 can be formed on the entire surface of the flange portion 6e, and in this embodiment, the flange portion 6e is entirely formed as a thin meat portion, but the thin meat Fill out this page! —Order * 11 Line 1 丨 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is printed in accordance with China National Standard (CNS) A4 (210 X 297 mm) -14-457496 A7 B7 V. Description of the invention (12) The part is located on the outer periphery of the flange part 6 b, especially the part near the terminal 4. It is also possible to change the wafer type with such a structure. The action of the resistor is when the screwdriver 8 of the operating tool is inserted into the screwdriver groove 7 d and the operation portion 7 e is rotated. The tubular portion 7 c and the sliding portion 7 f rotate at the same time, and the sliding portion 7 f slides on the resistor. The resistance 値 is adjusted on piece 2. During the adjustment, because the outer peripheral surface of the inclined portion 6 g is trapped in the hole edge portion of the hole 7 a of the bottom wall 7 b, the torque of the driver 8 can be increased, and because The existence of the inclined portion 6 g can make the top of the hole 6 j penetrating through the eye portion 6 c wider and deeper, and the screwdriver 8 can be inserted deeper to deepen the engagement between the screwdriver 8 and the screwdriver slot 7 d. At the same time, the length L 1 is greater than the length L 2 so that the driver 8 can be inserted deeply without touching the top 6 k, so as to lift the driver 8 and the driver The degree of engagement of 7 d. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Secondly, a method for mounting the chip-type variable resistor of the present invention on a printed wiring board will be described with reference to FIG. 8. The printed wiring board 20 is manufactured by For example, a glass resin material is mixed and formed into a flat plate shape, and a desired conductive pattern (not shown) is formed on at least one side of the printed wiring board 20. The above-mentioned wafer type is placed on the conductive pattern of the printed wiring board 20. At this time, paste solder (not shown) is first applied to the predetermined conductive pattern, and the terminals 4 and intermediate terminals 6 of the chip-type variable resistor can be connected to the paste solder to carry In this state, the printed wiring board 20 on which the chip-type variable resistor is placed is transferred to a reflection furnace so that the terminal of the chip-type variable resistor 4 This paper is in accordance with China National Standard (CNS) A4 (210 X 297 mm) -15-57496 A7 B7 V. Description of the invention (13) and the intermediate terminal 6 are soldered to the conductive pattern of the printed wiring board 2 0. (Please read the precautions on the back before filling Page) At this time, the paste-like solder exists in a state where the solder 4 and the intermediate terminal 6 are respectively connected to the solder 13 of the conductive pattern and the solder ball floating from the solder 13. However, since the insulating film 1 is provided 0, no solder ball is attached between the thin portion of the intermediate terminal 6 and the terminal 4, which can prevent the conduction of the terminal 4 and the intermediate terminal 6.: ★ 10 Although the insulation φ is provided in the above embodiment, it can be omitted At this time, since the connection 6 f of the original meat portion of the intermediate terminal 6 and the bottom surface of the terminal 4 are placed on the conductive pattern, the flange portion 6 e of the thin meat portion is in a state floating from the surface of the printed substrate 20, so that it can be made. The solder ball is less adhered to the thin flesh portion of the flange portion 6 e, and the conduction between the terminal 4 and the intermediate terminal 6 can be prevented. In addition, when a recessed portion 1 h is provided on the insulating substrate 1 and the flange portion 6 e and the connection portion 6 f of the intermediate terminal 6 are positioned within the recessed portion 1 h, the thin meat portion that is the flange portion 6 e exists between the terminal 4 and the terminal 4. There is a part of the insulating substrate 1 that causes no adhesion of solder balls between the thin portion of the intermediate terminal 6 and the terminal 4, and can prevent conduction between the terminal 4 and the intermediate terminal 6. Printed by the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and in the above-mentioned embodiment, although the gap between the side plate 6 b and the side 1 c is enlarged, the top portion of the side of the side plate 6 b facing the side 1 c is beaten. However, it is not limited to this. For example, as long as the tip portion is cut to be thin, it may be non-pushing and stepwise. In addition, when the height of the side plate 6 b is too low, a sufficiently large welding molding cannot be formed during fixing and connection. Therefore, it is necessary to ensure that the height difference is within 0.4 mm. Here, the meandering angle of the side plate 6 b does not necessarily need to be an angle. This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) -16- 457496 A7 B7 V. Description of the invention (14) (Please read the precautions on the back before filling in this page) The clearance of the side 1 c is more favorable with a zigzag or shallower angle, but on the contrary, it has a larger external dimension and is not easy to hold. It will be stuck when it is taken out from the conveyor belt, and so on. Therefore, the meandering angle may be a slight right angle within the range in which the above-mentioned problem does not occur. In the above-mentioned embodiment, an example has been described in which the eyelet portion 6c is formed integrally with the intermediate terminal 6, but the eyelet portion 6c and the intermediate terminal 6 may be separately formed. In this embodiment, although the plate 7 is integrally formed with the operating portion 7e and the cylindrical portion 7c provided with a screwdriver groove 7d, it is advisable to form a screwdriver groove 7d directly in the corner portion 7c to form the plate. . Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs as explained above, the chip-type variable resistor of the present invention is made thinner by pulling the top portion of the side 6 b closest to the middle terminal 6 b of the resistance element 2, and The gap width between the insulating substrate 1 and the side surface 1 c is increased. This prevents the flux in the welding from rising to 1 a above the surface tension beyond the gap when the side plate 6 b is welded. Therefore, it is difficult for the flux to penetrate the contact surface of the resistive element 2, which can reduce the solder adhesion and cause poor contact. "If the top end of the side plate 6b is set lower than the top 1a, the electricity can be increased in the vertical direction. Resistor 2 and side plate 6 The distance of b can further enhance the effect of preventing the flux from rising. The present invention also has the effect of easily mounting the second terminal 6 on the substrate 1 because the side plate 6 b is opened. Also, the wafer type of the present invention can be The varistor is provided at the flange portion 6 e of the intermediate terminal 6 with a thin meat portion having a thinner thickness than the connection portion 6 f. Therefore, the flange portion 6 e of the thin meat portion can be brought into a floating state from the surface of the printed circuit board 20. As a result, the solder ball adhesion of the thin meat portion of the flange portion 6 e becomes smaller, which can prevent the application of the standard paper size + the national standard (CNS) A4 specification (210 X 297 mm) -17 · S Αα Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the employee consumer cooperative 7496 A7 ____B7_____ 5. Description of the invention (15) The connection between the sub 4 and the intermediate terminal 6. The thin meat portion of the flange portion 6 e is formed by tapping processing, and its processing is quite simple and has good performance. The productivity. And the flange part 6 e Being formed as a thin meat portion can prevent the conduction between the terminal 4 and the intermediate terminal 6. The insulation film 10 is formed on the surface of the thin meat portion, so the conduction between the terminal 4 and the intermediate terminal 6 can be prevented, and the thickness can be reduced. In addition, a concave portion 1 h capable of accommodating the flange portion 6 e and the connecting portion 6 f of the intermediate terminal 6 is provided on the lower surface 1 b of the insulating substrate 1, and the surface of the thin meat portion is located in the concave portion 1 h more than the lower surface 1 b of the insulating substrate 1. And the intermediate terminal 6 is installed on the insulating substrate 1 > there is an insulating substrate 1 between the thin portion of the flange portion 6 e and the terminal 4, and there is no solder ball between the thin portion of the intermediate terminal 6 and the terminal 4, Therefore, the conduction between the terminal 4 and the intermediate terminal 6 can be prevented. Furthermore, the wafer-type variable resistor of the present invention is formed by the slider 7. The hard metal material is formed than the through hole ^ c, and the hole 7a of the bottom wall 7b is The eyelet 6c is inserted and the edge of the hole 7a of the bottom wall 7b is inserted into the outer peripheral surface of the eyelet 6c to rotatably install the slider 7. Therefore, the slider 7 and the penetration can be increased. The frictional force between the eyes 6 c provides a chip-type variable resistor with a large torque for the screwdriver 8. The eye 6 c is also provided The sloping portion 6 g at the top is urged to sink the edge of the hole 7 a of the bottom wall 7 b into the outer peripheral surface 1 of the sloping portion 6 g, so that a chip-type variable resistor having a large torque can be easily provided. In addition, the root 6 h of the inclined portion 6 g is located closer to the bottom of the insulating substrate 1 than the bottom wall 7 b which abuts the insulating substrate 1. The paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) < Please read the precautions on the back before filling out this page) Installation! —Order ·! -Thread)-. -18-457496 A7 B7 V. Description of the invention (16) The position can make the bottom wall The hole of 7 b is reliably recessed in the outer peripheral surface of the inclined portion 6 g of the hole of 7 a, and it is easy to provide a chip-type variable resistor. In addition, the inner peripheral surface of the inclined portion 6 g is provided with a space to allow the screwdriver 8 to be inserted. The hole 6 through the eye 6 c is wide and deep at the top, so the screwdriver 8 can be inserted deeper to deepen the screwdriver 8 and the screwdriver slot 7 d. After it is engaged, a chip-type variable resistor with easy and reliable adjustment operation is provided. '' The 6 g root 6 h of the inclined portion is located closer to the bottom 1 b side of the insulating substrate 1 than the bottom wall 7 b abuts against the insulating substrate 1, so that the driver 8 can be inserted deeper to provide adjustment operations Easier and more reliable chip-type variable resistor. The length L 1 between the top of the eye 6 c and the top 6 k of the inclined portion 6 g is set to be longer than the screwdriver groove 7 ci that is orthogonal to the axial direction. The length L '2 between the 6 k shaped portions can be deeply inserted into the screwdriver 8 to improve the degree of engagement between the screwdriver 8 and the screwdriver groove 7 d.' And provide a wafer-type variable resistor that is easy and reliable to adjust. Further, since the through-hole portion 6c and the intermediate terminal 6 are integrally formed, the number of parts is small, and a wafer-type variable resistor having good productivity can be provided. ----------- Install --------Order --------- Line ^ * < Please read the precautions on the back before filling this page) Ministry of Economy Wisdom The property bureau employee consumer cooperative prints a graphic illustration of the electric resistance changeable film. The crystal issuance is a simple one. Figures Figures Figures Figures Stereoscopic Viewing Device Device resistance, resistance, resistance, electricity, electricity, electricity, change, change, cocoa, cocoa, type, piece, piece, piece, piece, piece, piece, piece, piece, piece. This paper size applies to Zhongguanjia Standard (CNS) A4 specification (210 X 297 mm) 457 4 9 ⑤ A7 B7 V. Description of the invention (17) ^ = ¾ BS surface. Fig. 7 is an enlarged sectional view of a main part of a wafer-type variable resistor of the present invention. Fig. 8 is a sectional view showing a state where the wafer-type variable resistor of the present invention is mounted on a printed circuit board. FIG. 9 is an exploded perspective view of a conventional chip-type variable resistor. · Fig. 10 is a cross-sectional view of a conventional chip-type variable resistor. FIG. 11 is an enlarged perspective view of a main part of a conventional chip-type variable resistor. FIG. 12 is an enlarged sectional view of a main part of a conventional wafer-type variable resistor. Fig. 13 is a sectional view showing a state where a conventional wafer-type variable resistor is mounted on a printed circuit board. [Explanation of Symbols] (Please read the precautions on the back before filling in this page) The printed circuit board printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs a top b bottom c side d hole f pair of convex portions g concave portions h concave resistance elements 3 electrodes 4 terminals This paper size is applicable to China National Standard (CNS) A4 specifications (210 X 297 mm) -20-installed -------- order -------- line wy 4 5 7 4 9 6 A7 B7 V. Description of the invention (18) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy 4 a Base plate 4 b, 4 1 c Pin 6 Intermediate terminal 6 a Base plate 6 b Side plate 6 c Eyelet 6 e Flange Part 6 f connecting part 6 g inclined part 6 h root 6 j hole 6 k top 7 slider 7 a hole 7 b bottom wall 7 c cylindrical part 7 d screwdriver slot 7 e operation part 7 f sliding part 8 screwdriver 9 solder 1 0 Insulating film 1 3 Solder 2 0 Printed wiring board ----- ----- I ^ ill— —————--- I 1! ^ W— (Please read the notice on the back before filling (This page) This paper is sized for China National Standard (CNS) A4 (210 X 297 mm) -21-