316983 五、發明説明（i ) 〔發明所屬之技術領域〕 本發明係關於一種在主動件等之調整用工模藉旋轉滑 動件，俾變化電阻體與滑動件之滑接位置而調整電阻值的 旋轉型可變電阻器。 〔以往之技術〕 這種旋轉型可變電阻器係由在上面具有電阻體的絕緣 性基台，及可旋轉地軸支於該基台的滑動件所構成，在上 述基台設有連接於電阻體之兩端的一對端子與軸支滑動件 的中間端子。使用主動件等之調整用工模藉旋轉滑動件， 使滑動件之接點部與電阻體變化滑接位置成爲經由中間端 子檢測電阻體。 以往，在這種旋轉型可變電阻器，有折疊金屬平板作 爲滑動件者揭示在日本實開平5 _ 9 5 0 0 6號公報等》 這種滑動件係具有折叠成兩份的上面板與下面板，而在上 面板形成有可扣合於主動件等之工模的調整用溝，在下面 板形成有與電阻體滑接的接點部。 經濟部中央標準局員工消費合作社印製 〔發明欲解決之課題〕 上述之以往的滑動件，係因經由上面板周緣的折疊部 使下面板一體地折彎形成，因此，可將形成於上面板之調 整用溝之大小或位置較自由地設定•而且增長折疊部至接 點部爲止的跨距而能防止下面板之永久變形疲勞等優點。 然而，因接點部對於電阻體之接點應力藉由從折疊部至接 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4 - A7 B7 316983 五、發明説明（2 ) (請先閲讀背面之注意事項再填寫本頁) 點部爲止之跨距來決定，因此，若增長折疊部至接點部爲 止的跨距時，雖可防止下面板之永久變形疲勞，惟無法確 保充分之接點壓力*相反地，若縮短折疊部至接點部爲止 的跨距時，則有可提高接點壓力惟無法防止下面扳之永久 變形疲勞的問題。 本發明係鑑於這種以往技術之實情而創作者，而其目 的係在於提供一種可防止滑動件之永久變形疲勞因而能提 高接點壓力的旋轉型可變電阻器。 〔解決課題所用之手段〕 本發明係將經由折叠部折成兩部份的滑動件之上面板 與下面板，作成在折叠部與接點部之間的支點部相接觸。 如此，在支點部接觸上面板與下面板時，因支點部至接點 部爲止之跨距比折疊部至接點部爲止相比較變短，故可防 止下面板之永久變形疲勞並可提高接點壓力。 〔發明之實施形態〕 經濟部中央標準局貝工消費合作社印製 在本發明之旋轉型可變電阻器，其特徵爲具備：具有 電阻體的基台，及具有滑接於上述電阻體之接點部，而可 旋轉地配設於上述基台的滑動件，在上述滑動件經由折疊 部一體形成具有與工模可扣合之調整用溝的上面板及具有 上述接點部的下面板，這些上面板與下面板在上述折疊部 與上述接點部之間的支點部相接觸者。 作爲上述支點部，在上面板與下面板之任何一方形成 本紙張尺度適用中國國家梂準（CNS ) A4規格（210 X297公釐） 5 A7 B7 - 五、發明説明（3 ) 突部，而將該突部可接觸於任何另一方，惟在下面板之折 叠部與接點部之間形成突部，而將該突部接觸於上面板之 下面時，則可將上面板形成扁平形狀。 又，上述下面板形成圓環狀，將上述滑動件之旋轉中 心至上述支點部爲止之距離作爲A，並將上述滑動件之旋 轉中心至上述折叠部爲止之距離作爲B時，設成 〇. 14^A/B^〇. 8 之範圍時，則確保防止下面板之永久變形疲勞與接點壓力 上特別有效。 〔實施例〕 參照圖式說明實施例：第1圖係表示旋轉型可變電阻 器的平面圖，第2圖係表示該可變電阻器的側面圖，第3 圖係表示該可變電阻器的背面圖，第4圖係表示具備於該 可變電阻器之端子與中間端子的斜視圖，第5圖係表示具 備於該可變電阻器之基台的平面圖，第6圖係表示沿著第 1圖之A_A線的剖面圖，第7圖係表示該可變電阻器的 分解斜視圖。 如這些圖所示，本實施例的旋轉型可變電阻器係由合 成樹脂製的基台1 *及可旋轉地配設於該基台1上的金靥 製滑動件2所構成。在上述基台1之表面中央設有平面視 呈大約圓形之凹部1 a ，在該凹部1 a之周面形成有向內 本紙張尺度適用中國國家橾準（CNS > A4規格（210X297公釐） ----------枯衣------、訂-------.#. (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 -6 - 經濟部中央標準局員工消費合作社印製 A 7 B7 五、發明説明（4 ) 方稍突出的一對突部1 b。上述凹部1 a之外方係形成平 面視呈大約馬蹄型平坦部1 c，除了該平坦部1 c之部分 係形成段差狀。在上述基台1之一側面形成有縱溝1 d， 該縱溝1d之上端係達到位於上述兩突部1b間的段差部 1 e ° 在上述基台1之背面配設有一對端子3與一中間端子 4，這些端子3與中間端子4係均由將金屬平板型成所定 形狀者所形成，藉由外插成形一體化在基台1。如第4圖 所示，各端子3係折彎成凹狀，該折彎部之其中一方的上 端3 a係曝露於上述平坦部1 c。各端子3之上端3 a與 平坦部1 c係在相同平面內，在包括這些端子3之上端 3 a的平坦部1 c之所有領域印刷形成有電阻體5。一方 面，在上述中間端子4 —體形成有一對止動片1 0與扣眼 構件6，該扣眼構件6係位於上述凹部la內之中央。各 止動片10係沿著折彎線L折彎而埋設於上述基台1之突 部1 b內，惟與折彎線L大約正交之端面係由突部1 b之 ： 側面曝露，這些端面形成止動件1 〇 a。 上述滑動件2係具有環狀之上面板7，及從該上面板 7之中央向下方延伸的筒狀部8，及從上面板7之外緣部 向背面側折疊的環狀下面板9，這些係藉由沖壓加一枚金 屬平板所形成。在上述筒狀部8之底面形成有透孔8 a， 藉將上述扣眼構件6插入於該透孔8 a並施以歛縫，使滑 動件2可旋轉地支持於上述基台1上，而且形成電氣方式 地連接有滑動件2與中間端子4。又，在上述筒狀部8之 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ----------1------,訂_,-----^ , - (請先閲讀背面之注意事項再填寫本頁) A/ B7 S16983_ 五、發明説明（5 ) 上部形成有在兩側具有切剖面的4個調整用溝8 b，又， 在筒狀部8之上部至下部形成有同稱在兩側具有切剖面的 鼓出部8 c，形成於該鼓出部8 c之內側的溝係連續於上 述調整用溝8b之一溝。亦即，各調整用溝8b中，三個 調整用溝8 b係連結於上面板7之內周緣與筒狀部8之周 面，惟剩下之調整用溝8 b係連結於上面板7之內周緣與 鼓出部8 c之上端。各調整用溝8 b係隔著9 0度之等間 隔配設成十字狀，在滑動件2之旋轉操作時，形成在這些 調整用溝8b扣合主動件等之調整用工模11(參照第6 圓）。上述鼓出部8c之下部係位於上述基台1的凹部 1 a內，而在滑動件2之旋轉操作時，藉由鼓出部8 c之 切剖面擋接於曝露在凹部1 a內的上述止動件1 〇 a，形 成滑動件2之旋轉角度規制在所定範圍內。 一方面，在上述下面板9形成有接點部9 a ，該接點 部9 a係彈接於上述電阻體5上。接點部9 a係形成在從 連接於上面板7之周緣的折疊部9 b最遠離之位置，在這 些接點部9 a與折疊部9 b之間形成有折彎成山形的支點 部9 c »該支點部9 c係在滑動件2以裝進基台1前之無 負載狀態下從上面板7離開，惟如第2圖所示，在滑動件 2裝進基台1之狀態下接觸於上面板7之下面。在此，將 滑動件2之旋轉中心（扣眼6之中心）至支點部9 c爲止 之距離作爲A，又將滑動件2之旋轉中心至折疊部9 b爲 止之距離作爲B時，接點部9 a對於電阻體5之接點壓力 係藉由距離A所決定，下面板9之永久變形疲勞係藉由距 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）__ 請 先 閲 讀 背 面 之 注 意， 事 項 再- 旁 裝 訂 線 經濟部中央標準局員工消費合作社印製 8 - 經濟部中央標準局負工消費合作社印製 A7 B7 五、發明説明（6 ) 離B來決定。 第8圖係表示將距離A作爲參差時之接點壓力與永久 變形疲勞之關係的說明圖，距離B係設成1. 4mm之一 定值。由同圖可知’接點壓力係隨著距離A愈接近距離B 而愈小，在距離A2 1 · 1mm急激地降低。又，永久變 形疲勞係距離A愈接近旋轉中心愈變大，而在距離 0· 2急激地變大。因此，實用上可滿足接點壓力與永久 變形疲勞之雙方的範圍，係A/B爲0. 2/1. 4 ^ 0 · 14以上而1. 1/1· 4与0. 8以下，亦即 0. 14SA/BS0. 8 較理想。 如上所構成的旋轉型可變電阻器，在省略圖示之印刷 基台之軟焊焊接點藉軟焊兩端子3與中間端子4，面實裝 於該印刷基板上。結果，例如在兩端子3間施加所定電壓 ，經由扣眼構件6而從連接於滑動件2之中間端子4取出 中間電壓時，則可輸出隨著滑動件2之接點部9 a與電阻 體5之滑接位置的電阻值之變化。又，微調整電阻值時， 當將調整用工模1 1之前端扣合於調整用溝8 b而旋轉操 作時，固滑動件2以扣眼構件6作爲中心旋轉，因此，接 點部9 a滑接電阻體5上而變化電阻值。此時，設於滑動 件2的筒狀部8之下部係轉動基台1之凹部1 a內，惟突 出形成於該筒狀部8之周面的鼓出部8 c之切剖面擋接於 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ----------1— (請先聞讀背面之注意事項再填寫本頁) 訂 線 -9 - 經濟部中央橾準局男工消費合作社印製 A7 ___B7_ 五、發明説明（7 ) 一對止動件1 0 a之任一止動件時，則無法將滑動件2旋 轉至該以上，滑動件2之旋轉角度被規制在所定角度範圍 內。 如上所述，在上述實施例，因經由折疊部9 b折疊成 兩份的滑動件2之上面板7與下面板9，係在折疊部9 b 與接點部9 a之間的支點部9 c相接觸，因此，可充分增 長折叠部9 b至接點部9 a爲止之距離B而能防止下面板 9之永久變形疲勞，而且縮短支點部9 c至接點部9 a爲 止之距離A而能提髙接點壓力，而且藉適當變更距離A也 可設定適當之接點壓力。又，因將支點部9 c形成在下面 板9，因此不但能將上面板形成扁平狀能提高真空吸附時 之吸附力，而且也可提高調整用溝8 b之大小或位置的自 由度。 〔發明之效果〕 本發明係以如上所述之形態下實施，具有如下所述之 效果。 經由折叠部折叠成兩部分的滑動件之上面板與下面板 ，係以折疊部與接點部之間的支點部相接觸，因支點部至 接點部爲止之跨距此折疊部至接點部爲止之跨距爲短，因 此能防止下面板之永久變形疲勞下能提高接點壓力。 又，將下面板形成圓環狀，而且將滑動件之旋轉中心 至支點部爲止之距離作爲A，將滑動件之旋轉中心至折疊 部爲止之距離作爲B時，設成 氏張尺度逋用中國國家橾準（CNS ) A4規格（210X297公釐） ----------装------—-----ii (請先閲讀背面之注，意事項再填寫本頁) -10 - S16983 五、發明説明（8 ) 〇. 14^A/B^〇. 8 之範圍時，則在確保防止下面板之永久變形疲勞與接點壓 力上成爲特別有效果。 〔圖式之簡單說明〕 第1圖係表示本發明之實施例之旋轉型可變電阻器的 平面圖。 第2圖係表示該可變電阻器的側面圖》 第3圖係表示該可變電阻器的背面圖。 第4圖係表示具備於該可變電阻器之端子與中間端子 的斜視圖· 第5圖係表示具備於該可變電阻器之基台的平面圖。 第6圖係表示沿著第1圖之A—A線的剖面圖。 第7圖係表示該可變電阻器的分解斜視圖。 第8圖係表示滑動件之接點壓力與永久變形疲勞之關 係的說明圖。 〔記號之說明〕 1:基台， la:凹部， 2:滑動件， 3:端 子， 4:中間端子， 5:電阻體， 6:扣眼構件， 7:上面板， 8:筒狀部， 8a:透孔， 8b:調 整用溝* 8c:鼓出部， 9:下面板， 9a:接點 本紙張尺度適用中國國家梂準（CNS ) A4規格（210X297公釐） ---------^-- (請先閱讀背面之注意事項再填寫本頁) 訂 線 經濟部中央標準局員工消費合作杜印製 A7 B7 五、發明説明（9 ) 部， 9b:折疊部， 9c:支點部 經濟部中央標準局貝工消費合作社印製 (請先閲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说格（210 X297公釐） -12 -316983 V. Description of the invention (i) [Technical field to which the invention belongs] The present invention relates to a method for adjusting the rotation of the resistance value by changing the sliding contact position of the resistor body and the sliding member by rotating the sliding member in the adjustment mold of the active part and the like Type variable resistor. [Conventional Technology] This rotary variable resistor is composed of an insulating base with a resistor on top and a slider rotatably supported on the base. The base is provided with a resistor A pair of terminals at both ends of the body and the middle terminal of the shaft support slider. The adjustment tool using an active part or the like changes the sliding contact position of the contact part of the sliding part and the resistor by rotating the sliding part to detect the resistor through the intermediate terminal. In the past, in this type of rotary variable resistor, a folded metal flat plate as a slider is disclosed in Japanese Kaikai Hei 5_9 5 0 0 6 Gazette, etc. Such a slider has an upper panel folded in two and In the lower panel, an adjustment groove that can be snapped onto a mold of a driving member or the like is formed on the upper panel, and a contact portion that is in sliding contact with the resistor is formed on the lower panel. Printed by the Employees Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs [Problems to be Solved by the Invention] The above-mentioned conventional slider is formed by integrally bending the lower panel through the folding portion on the periphery of the upper panel, so it can be formed on the upper panel The size or position of the adjustment groove can be set more freely, and the span from the folded part to the contact part can be increased to prevent the permanent deformation and fatigue of the lower panel. However, due to the contact stress on the resistor from the contact part, the Chinese national standard (CNS) A4 specification (210X297mm) is applied from the folded part to the paper size. -4-A7 B7 316983 V. Description of the invention (2) (Please read the precautions on the back before filling in this page). The span up to the point is determined. Therefore, if the span from the folded part to the contact part is increased, although the permanent deformation fatigue of the lower panel can be prevented, it cannot be Ensure sufficient contact pressure * Conversely, if the span from the folded part to the contact part is shortened, there is a problem that the contact pressure can be increased but the permanent deformation of the lower wrench cannot be prevented from fatigue. The present invention was created in view of the facts of the prior art, and its purpose is to provide a rotary variable resistor that can prevent the permanent deformation fatigue of the sliding member and can increase the contact pressure. [Means for Solving the Problem] In the present invention, the slider upper panel and the lower panel folded into two parts by the folding portion are made in contact with the fulcrum portion between the folding portion and the contact portion. In this way, when the fulcrum part contacts the upper panel and the lower panel, since the span from the fulcrum part to the contact part is shorter than that from the folding part to the contact part, the permanent deformation fatigue of the lower panel can be prevented and the contact can be improved Point pressure. [Embodiment of the invention] The rotary variable resistor printed in the present invention by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs is characterized by comprising: a base with a resistor, and a connection that is slidingly connected to the resistor A sliding part that is rotatably arranged on the base, and an upper panel with an adjustment groove that can be engaged with the mold and a lower panel with the contact part are integrally formed on the sliding part via a folding part, Those upper panel and lower panel are in contact with the fulcrum portion between the folded portion and the contact portion. As the above fulcrum part, the paper size is formed on either side of the upper panel and the lower panel. The Chinese National Standard (CNS) A4 specification (210 X297 mm) is applied. 5 A7 B7-5. Description of the invention (3) The protrusion The protrusion can be in contact with any other party, but a protrusion is formed between the folded portion and the contact portion of the lower panel, and when the protrusion is contacted under the upper panel, the upper panel can be formed into a flat shape. In addition, the lower panel is formed in a ring shape, the distance from the center of rotation of the slider to the fulcrum portion as A, and the distance from the center of rotation of the slider to the folded portion as B, set to 〇. In the range of 14 ^ A / B ^ 〇. 8, it is particularly effective in preventing permanent deformation fatigue and contact pressure of the lower panel. [Embodiment] The embodiment will be described with reference to the drawings: FIG. 1 is a plan view of a rotary variable resistor, FIG. 2 is a side view of the variable resistor, and FIG. 3 is a view of the variable resistor Rear view, Figure 4 is a perspective view of the terminal and the intermediate terminal provided in the variable resistor, Figure 5 is a plan view of the base provided in the variable resistor, Figure 6 is shown along the Fig. 1 is a cross-sectional view taken along line A_A, and Fig. 7 is an exploded perspective view of the variable resistor. As shown in these figures, the rotary variable resistor of the present embodiment is composed of a base 1 * made of synthetic resin and a gold slider 2 rotatably arranged on the base 1. In the center of the surface of the abutment 1 is provided a concave portion 1 a that is approximately circular in plan view, and a circumferential surface of the concave portion 1 a is formed with an inward direction. This paper scale is applicable to the Chinese National Standard (CNS > A4 specification (210X297 Ali) ---------- withered clothes ------, order -------. #. (Please read the notes on the back before filling this page) Central Bureau of Standards, Ministry of Economic Affairs Printed by Employee Consumer Cooperative-6-Printed by Employee Consumer Cooperative of Central Bureau of Standards of the Ministry of Economic Affairs A 7 B7 V. Description of invention (4) A pair of protrusions 1 b with a slightly protruding square. The above concave part 1 a forms a plane view A flat portion 1 c having a horseshoe shape, except for the flat portion 1 c, is formed to have a stepped shape. A longitudinal groove 1 d is formed on one side surface of the abutment 1, and the upper end of the longitudinal groove 1 d reaches the two protrusions. The stepped portion 1b between 1b is provided on the back of the base 1 with a pair of terminals 3 and an intermediate terminal 4, these terminals 3 and the intermediate terminal 4 are formed by a metal flat plate shaped into a predetermined shape, by Insert molding is integrated on the base 1. As shown in Figure 4, each terminal 3 is bent into a concave shape, and the upper end 3 of one of the bent portions a is exposed to the flat portion 1 c. The upper end 3 a of each terminal 3 is in the same plane as the flat portion 1 c, and a resistor is printed in all areas including the flat portion 1 c of the upper end 3 a of these terminals 3 5. On the one hand, a pair of stopper pieces 10 and grommet members 6 are formed in the middle terminal 4 in one body, and the grommet member 6 is located in the center of the recessed portion la. Each stopper piece 10 is along the bending line L It is bent and buried in the protrusion 1 b of the above-mentioned base 1, but the end surface approximately orthogonal to the bending line L is formed by the protrusion 1 b: the side surface is exposed, and these end surfaces form a stopper 10a. The piece 2 has a ring-shaped upper panel 7, a cylindrical portion 8 extending downward from the center of the upper panel 7, and a ring-shaped lower panel 9 folded from the outer edge of the upper panel 7 to the back side. These systems It is formed by stamping and adding a metal flat plate. A through hole 8 a is formed on the bottom surface of the cylindrical portion 8. By inserting the buttonhole member 6 into the through hole 8 a and caulking, the slider 2 can be made It is rotatably supported on the above-mentioned base 1, and the slider 2 and the intermediate terminal 4 are electrically connected. The paper standard of the above cylindrical part 8 is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) ---------- 1 ------, order _, ----- ^,-(Please read the precautions on the back before filling in this page) A / B7 S16983_ V. Description of the invention (5) The upper part is formed with four adjustment grooves 8 b with cut sections on both sides, From the upper part to the lower part of the part 8, a bulging part 8c having the same name on both sides is formed, and the groove formed inside the bulging part 8c is continuous with one of the above-mentioned adjustment grooves 8b. That is, among the adjustment grooves 8b, three adjustment grooves 8b are connected to the inner periphery of the upper panel 7 and the circumferential surface of the cylindrical portion 8, but the remaining adjustment grooves 8b are connected to the upper panel 7 The inner periphery and the upper end of the bulging portion 8c. The adjustment grooves 8 b are arranged in a cross shape at equal intervals of 90 degrees. When the slider 2 is rotated, these adjustment grooves 8 b are engaged with adjustment molds 11 (refer to section 6 circles). The lower part of the bulging portion 8c is located in the concave portion 1a of the base 1, and when the slider 2 is rotated, the cut section of the bulging portion 8c is blocked by the above-mentioned exposed portion in the concave portion 1a. The rotation angle of the stopper 10a, forming the slider 2, is regulated within a predetermined range. On the one hand, a contact portion 9 a is formed on the lower panel 9, and the contact portion 9 a is elastically connected to the resistor 5. The contact portion 9 a is formed at a position farthest from the folded portion 9 b connected to the peripheral edge of the upper panel 7, and a fulcrum portion 9 bent into a mountain shape is formed between these contact portions 9 a and the folded portion 9 b c »The fulcrum portion 9 c is separated from the upper panel 7 in the unloaded state before the slider 2 is installed in the base 1, but as shown in FIG. 2, in the state where the slider 2 is installed in the base 1 Contact under the upper panel 7. Here, when the distance from the rotation center of the slider 2 (the center of the buttonhole 6) to the fulcrum portion 9c is A, and the distance from the rotation center of the slider 2 to the folding portion 9b is B, the contact portion 9 a The contact pressure of the resistor 5 is determined by the distance A, and the permanent deformation fatigue of the lower panel 9 is applied to the Chinese national standard (CNS) A4 specification (210X297 mm) from the paper size __ Please read first Note on the back, the matter is again-side binding line printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 8-printed A7 B7 by the negative work consumer cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (6) It is determined from B. Fig. 8 is an explanatory diagram showing the relationship between the contact pressure and permanent deformation fatigue when the distance A is used as a difference, and the distance B is set to a fixed value of 1.4 mm. It can be seen from the same figure that the 'contact pressure system becomes smaller as the distance A gets closer to the distance B, and sharply decreases at a distance A2 1.1 mm. In addition, the permanent deformation fatigue system becomes larger as the distance A is closer to the center of rotation, and suddenly becomes larger at a distance of 0.2. Therefore, it is practical to meet the range of both the contact pressure and the permanent deformation fatigue, the system A / B is 0.2 / 1. 4 ^ 0 · 14 or more and 1. 1/1 · 4 and 0.8 or less, also That is 0.1SA / BS0.8 is ideal. The rotary variable resistor constructed as described above is mounted on the printed circuit board by soldering the two terminals 3 and the intermediate terminal 4 at the solder joints of the printing base (not shown). As a result, for example, when a predetermined voltage is applied between the two terminals 3 and the intermediate voltage is taken out from the intermediate terminal 4 connected to the slider 2 through the buttonhole member 6, the contact portion 9 a of the slider 2 and the resistor 5 can be output The change in resistance at the sliding contact position. In addition, when the resistance value is finely adjusted, when the front end of the adjustment die 11 is engaged with the adjustment groove 8 b and rotated, the fixed slider 2 rotates around the buttonhole member 6, so the contact portion 9 a slides The resistor 5 is connected to change the resistance value. At this time, the lower portion of the cylindrical portion 8 of the slider 2 is located in the concave portion 1 a of the rotating base 1, but the cut section of the bulging portion 8 c protruding from the peripheral surface of the cylindrical portion 8 is blocked by This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) ---------- 1— (please read the precautions on the back and then fill out this page) -9-Ministry of Economic Affairs Printed A7 by the Central Bureau of Industry and Commerce Cooperative of Men ’s Workers. ___B7_ V. Description of the invention (7) When any of the pair of stopper 1 0 a stopper, it is impossible to rotate the sliding member 2 above that, the sliding member 2 The rotation angle is regulated within the specified angle range. As described above, in the above embodiment, since the upper panel 7 and the lower panel 9 of the slider 2 folded into two via the folding portion 9 b are tied to the fulcrum portion 9 between the folding portion 9 b and the contact portion 9 a c contacts, therefore, the distance B between the folded portion 9 b and the contact portion 9 a can be sufficiently increased to prevent permanent deformation fatigue of the lower panel 9 and the distance A between the fulcrum portion 9 c and the contact portion 9 a can be shortened The contact pressure can be raised, and the appropriate contact pressure can be set by appropriately changing the distance A. In addition, since the fulcrum portion 9c is formed on the lower plate 9, not only can the upper plate be flattened, the suction force during vacuum suction can be improved, but also the degree of freedom of the size or position of the adjustment groove 8b can be increased. [Effects of the Invention] The present invention is implemented in the above-mentioned form, and has the following effects. The upper panel and the lower panel of the sliding member folded into two parts by the folding part are in contact with the fulcrum part between the fold part and the contact part, because the span from the fulcrum part to the contact part is from the folding part to the contact point The span up to the part is short, so it can prevent the permanent deformation of the lower panel and increase the contact pressure under fatigue. In addition, when the lower panel is formed into a ring shape, and the distance from the center of rotation of the slider to the fulcrum is taken as A, and the distance from the center of rotation of the slider to the folded part is taken as B, it is set to the Zhang scale National Standard (CNS) A4 specification (210X297mm) ---------- installed ----------- ii (please read the note on the back, please fill in this matter before you pay attention to it Page) -10-S16983 V. Description of the invention (8) 〇. 14 ^ A / B ^ 〇. 8 range, in order to ensure the permanent deformation of the lower panel to prevent fatigue and contact pressure becomes particularly effective. [Brief description of drawings] Fig. 1 is a plan view showing a rotary variable resistor according to an embodiment of the present invention. Fig. 2 shows a side view of the variable resistor. Fig. 3 shows a rear view of the variable resistor. Fig. 4 is a perspective view showing the terminals and intermediate terminals provided in the variable resistor. Fig. 5 is a plan view showing a base provided in the variable resistor. Figure 6 is a cross-sectional view taken along line AA of Figure 1. FIG. 7 is an exploded perspective view of the variable resistor. Figure 8 is an explanatory diagram showing the relationship between the contact pressure of the sliding member and the permanent deformation fatigue. [Description of Symbols] 1: Abutment, la: recess, 2: slider, 3: terminal, 4: intermediate terminal, 5: resistor, 6: buttonhole member, 7: upper panel, 8: cylindrical portion, 8a : Through hole, 8b: Adjusting groove * 8c: Bulge, 9: Lower panel, 9a: Contact This paper size is applicable to China National Standards (CNS) A4 specification (210X297mm) ------- -^-(Please read the precautions on the back before filling in this page) A7 B7 of the Consumers ’Cooperation Cooperation of the Central Standards Bureau of the Ministry of Economics and Economics V. Invention Description (9) Department, 9b: Folding Department, 9c: Fulcrum Printed by the Beigong Consumer Cooperative of the Ministry of Economic Affairs Central Standards Bureau (please read the precautions on the back before filling out this page) This paper scale is applicable to the Chinese National Standard (CNS) A4 said grid (210 X297 mm) -12-