200828380 九、發明說明： L發明所屬之技術領域3 發明領域 本發明涉及一種旋轉開關，用於數碼相機等的模式設 5 定等，特別是涉及通過使接觸片與多個固定接點接觸並旋 轉進行接點切換的旋轉開關。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary switch for use in a mode setting of a digital camera or the like, and more particularly to contacting and rotating a contact piece with a plurality of fixed contacts. Rotary switch for contact switching.
L先前技術:J 發明背景 目前’在開關架（開關座）上設置多個固定接點，將作為 ίο開關切換的旋轉操作旋鈕(旋轉板）可轉動地安裝在上述開 關架上，在該旋轉操作旋鈕上安裝接觸片（轉子），使接觸片 與開關架的固定接點接觸，這樣的旋轉開關己經被人們所 知曉。 這種旋轉開關形成下述結構；在旋轉操作旋鈕的外周 15以預定的間距設置凹部，在該凹部設置板簧等棘輪機構。 如在日本特開2001-35309公報中，棘輪機構由板簧及 滾珠構成的旋轉開關，這樣的公開内容己經披人們所知曉。 根據第16和17圖，對於在日本特開2001-35309公報中 公開的旋轉開關說明如下： 20 第16和17圖中表示的旋轉開關200由下述部件構成；用 絕緣體形成的大致呈矩形的開關架2〇1 ;在該開關架2〇1上 設置的固定接點202 ;可轉動地安裝在開關架2〇1上的旋轉 操作旋鈕203 ;安裝在該旋轉操作旋鈕2〇3上且與固定接點 202接觸的接觸片204(參照第17圖）；夾在開關架2〇1和旋轉 5 200828380 * 操作旋鈕2〇3之間的一對棘輪機構205以及覆蓋開關架201 且把旋轉操作旋鈕203、接觸片204及棘輪機構205收容在開 關架201内的箱206(參照第17圖）。 固定接點202具有，設在中央的環狀的中央接點202a和 5 設在該中央接點202a的外周的更外側的圓周上的多個外周 接點202b。 一對棘輪機構205設在上述開關架201的相對的兩個 邊，對於旋轉操作旋鈕203相互面對地設置。該棘輪機構205 由下述部件構成：與旋轉操作旋鈕203接觸的一邊的滾珠 10 211 ;設在開關架201的一邊的引導槽213中、且把一邊的滾 珠211向著旋轉操作旋鈕2〇3擠壓的一邊的板簧215 ;與旋轉 操作旋鈕203接觸的另一邊的滾珠212以及設在開關架201 的另一邊的引導槽214中，且把另一邊的滾珠212向著旋轉 操作旋鈕203擠壓的另一邊的板簧216。 15 因此，現有的旋轉開關200通過使接觸片204接觸在固 定接點202，旋轉旋轉操作旋鈕203，使接觸片204在固定接 點202上滑動，進行電路切換。此時，棘輪機構205產生適 度的敲擊(click)感。 但是，現有的旋轉開關200由於一對棘輪機構205被設 20 置在開關架201的相對的兩邊，因此相應地，旋轉開關200 的外形增大了，阻礙著旋轉開關200的小型化。 而且，因為一對棘輪機構205由2個滾珠211、212和一 對板簧215、216構成，所以旋轉開關200的構造變得複雜。 另外，為了使滾珠211、212推壓旋轉操作旋鈕203，構 6 200828380 造上以板簣215、216的端部相對於引導槽213、214保持間 隙的狀態，把長的板簧215、216插入引導槽213、214中。 因此，在引導槽213、214和板簧215、216的端部之間需要 有一定的間隙。從而，旋轉操作旋轉操作旋姐203時，在引 5導槽213、214中，板簧215、216呈現跳躍現象，得不到感 覺(feeling)良好的敲擊感。 【發明内容3 發明概要 因此，我們希望得到能夠實現開關構造的簡單化，且 10 能以低成本實現開關的小型化的旋轉開關，以及得到適度 的敲擊感’插作感優良的旋轉開關。而且，希望得到能夠 較多地設定切換的接點數的旋轉開關。 根據本發明可以提供由下述部件構成的旋轉開關，矩 形的開關架；固定接點被一體地設置在底面，在中央設有 15圓柱狀的支承軸’由絕緣體形成；圓板狀的旋轉操作旋紐， 設有可旋轉地嵌合在上述支承軸上的筒部；接觸片，被嵌 合在上述旋轉操作旋鈕上且與上述固定接點接觸；環狀的 板簧’卡合在上述開關架上且給予上述旋轉操作旋鈕以敲 擊感；蓋，蓋在上述開關架上，且按照上述接觸片、上述 20旋轉操作旋鈕及上述板簧這樣的順序將它們與上述支承軸 成為同軸地一併收容。 這樣’在本發明中，旋轉開關的裝配是：將接觸片嵌 合在旋轉操作旋鈕上，按照接觸片、旋轉操作旋鈕及板簧 這樣的順序將它們一併收容在開關架上後，將蓋蓋在開關 7 200828380 架上由於構成部件僅有固定接點被—體設置的開關架、 與固疋接點接觸的接㈣、麟接㈣賴轉操作旋钮、 ，予该旋轉操作旋細敲擊感的板箐以及蓋在開關架上的 個^件，所以能夠實現開關構造的簡單化。 5 10 而且由於疋按照接觸片、旋轉操作旋鈕及板簧這樣 的員序將匕們與支承輛成為同軸地收容在開關架土的結 冓斤乂例如與將板黃配置在旋轉操作旋紐外側的情況相 比，能夠實現旋轉開關的小型化。 ’'疋#作旋㈣想的結構是，具有指向上述支承 二安裝上述接觸片的至少兩個的凸部和進行上述接 =的:::至:一個的定位凸起。上述接觸片理想的結 、i述各凸部上嵌合叫合部和嵌合在上述定 位凸起上的至少一個的定位部。 操作一部上。此時，::=t部嵌合在旋轉 凸部指向支承軸設置，且把嵌合部嵌故-的至少兩個 接觸片的撓曲使嵌合部向進一 + 4 - °亥凸。卩上，所以， 凸部及嵌合部的歲合面，可以方向作用，在兩個 接觸片相對於旋轉操作旋钮的間―定的角度’從而吸收 嵌合在旋轉操作旋紐上。因此，^能，將接觸片牢固地 在旋轉操作旋纽上等的作掌，於而要實知將接觸片緊固 而且，由於只是把凸部嵌合錢=現裝配工時的減少。 強度統一化。 所以能夠實現嵌合 200828380 上述接觸片理想的結構是：具有在上述開關架的上述 支承軸周圍設置的公共接點和在該公共接點的直徑外侧設 置的切換接點。上述固定接點理想的結構是：具有在上述 開關架的上述支承軸的周圍與上述公共接點接觸的中央端 5子和設在該中央端子的外周且與上述切換點接觸的多個外 周端子。 因而，能夠提高開關的ΟΝ/OFF的角度精度，並可以有 效地利用開關架的底面的空間。結果，可以較多地設定切 換的接點數。即，能夠實現多位置的旋轉開關。 1〇 上述旋轉操作旋鈕理想的結構是；在圓板狀的上面外 周周圍擁有多個凹部，以產生旋轉操作時的敲擊感。上述 板黃理想的結構是：具有隨著上述旋轉操作旋鈕轉動、選 擇性地嵌入上述多個凹部的嵌合凸部。從而，可以把板箬 配置在旋轉操作旋鈕的上部。因此，可以使開關架的外形 15減小，能夠實現旋轉開關的小型化。 上述開關架理想的結構是：在正方形的開關架的相對 的兩個角上分別具有卡合上述板簧的卡合部，上述板簧具 有壓入上述各卡合部的壓入片。即，由於在正方形的開關 架的對角線上的兩個角上設置板簧的卡合部，所以，能夠 20最長地設定卡合部之間的跨度，板簧以穩定的狀態被卡合 在開關架上。而且，由於在板簧上設置了壓入卡合部的壓 入片，所以，可以防止板簧相對於開關架的間隙，能夠給 予旋轉操作旋鈕以擬合良好敲擊感。結果，可以實現操作 感優良的旋轉開關。 9 200828380 . 圖式簡單說明 第1圖是本發明涉及的一個實施例的旋轉開關的分解 立體圖； 第2圖是第1圖所示的旋轉開關的平面圖； , 5 第3圖是沿第2圖的3-3線剖開的剖面圖； 苐4圖是將接觸片安裝在第1圖所示的旋轉操作旋鈕的 下面的仰視圖； 弟5圖疋沿弟4圖的5-5線剖開的剖面圖； 第6圖是第1圖所示的接觸片的平面圖； 10 第7圖是上述接觸片的側面圖； 第8圖是第1圖所示的板簧的平面圖； 第9圖是上述板簧的正面圖； 第10圖是上述板簧的側面圖； 第11圖是把板簧裝配在第1圖所示的開關架上的平面 15 圖； 第12圖是沿第11圖的12-12線剖開的剖面圖； 第13圖是在第1圖所示的開關架上設置的固定接點的 平面圖； 弟14圖是表不弟13圖所不的固定接點的另一種實施例 20 的平面圖； 第15圖是表示第14圖所示的固定接點的另一種實施例 的平面圖； 第16圖是目前的旋轉開關的平面圖； 第17圖是第16圖所示的旋轉開關的分解剖面圖。 10 200828380 C實施冷式3 較佳實施例之詳細說明 下面’根據附圖對本發明的實施例詳細說明。 如第1、2和3圖所示，旋轉開關10由下述部件構成；大 5致正方形的開關架11 ;可旋轉地安裝在該開關架11上的旋 轉操作旋纽12 ;裝在該旋轉操作旋鈕12上的接觸片π ;卡 合在開關架11上的板簧14;覆蓋開關架11的蓋15。 開關架Π由下述部分構成：由絕緣材料製成的架主體 21 ;在該架主體21上設置的固定接點22 ;為了使接觸片13 10滑動的固定接點22的滑動部分露出來，在架主體21上設置 的收容凹部23 ;在該收容凹部23的大致中央設置的圓柱狀 支承軸24 ;在架主體21相對的兩個角上設置的卡合部（壓入 槽)25、25 ;與這兩個卡合部25、25垂直相交且在架主體21 的相對的兩個角上設置的三角凸部26、26 ;在架主體21的 15 兩邊的侧面，每邊分別各設置兩個的突起部27、27。 固定接點22是在開關架11的底面被一體地設置的部 件’由δ又在支承轴24的周圍、且接觸片13與其接觸並滑動 的中央端子29和設在該中央端子29的外圍，接觸片13與其 接觸並滑動的多個外周端子31、32、33 ' 34、35、36、37、 20 38、39、4〇(參照第11圖）構成。 旋轉開關10由於是可進行10個位置切換的開關，因 此，中央端子29在架主體21上設有1個，上述外周端子31〜 40在架主體21上設有10個。 收容凹部23是將接觸片13、旋轉操作旋鈕12及板簧14 11 200828380 . 以上述的順序並且與支承軸24同軸地收容的部分。 支承軸24從架主體21的底面向上突出，可旋轉地支承 旋轉操作旋姐12。 卡合部25壓入板簧14且牢固地支承板簧14。 . 5 突起部27是蓋15卡合在開關架11上的部分，在架主體 21的上部形成架斜面41，在該斜面41的下部形成架台階部 42。該突起部27通過蓋15的安裝時用斜坡面41引導蓋15， 在台階部42卡合蓋15的一處，將蓋15安裝在架主體21上。 旋轉操作旋鈕12由下述部分構成，大致圓板狀的基盤 10 44 ;從該基盤44的中心向上方突出，可做旋轉操作的操作 部45 ;從基盤44的中心向下方延伸，可旋轉地嵌合在支承 軸24上的圓筒狀的筒部46(第3圖）；設在基盤44的上面，減 少與盍15的摩擦的滑動凸部47、48 ;在基盤44的上面且設 在外周附近’收容板簧14的凸台部49 ;設置在該凸台部49 15上、與板簧14嵌合的多個凹部51 ;指向基盤44的筒部46設 置、板黃14的第1、第2凸部52、53(參照第4圖）；設在基盤 44的下面，對接觸片13進行定位的第1〜第3定位突起54〜 56 〇 操作部45是從俯視看呈大致D字狀的突起，具有在前端 2〇使操作旋鈕（圖中未示出）容易嵌合的錐部(taper)57和在内 部防止成形時的收縮或變形的掏空部58。 滑動凸部47、48形成同心圓。 如第4和5圖所示，第1凸部52向著筒部46突出，由向基 盤44的下方傾斜形成的斜面61和在該斜面61的上部形成的 12 200828380 台階部62構成。該凸部52在接觸片13安裝時用斜面61引導 接觸片13，通過接觸片13的一處卡合在台階部62上，將接 觸片13安裝到旋轉操作旋鈕12上。第2凸部53與第1凸部52 是同樣的形狀。 5 如第3和4圖所示，開關架11的支承軸24插入筒部46。 第1和第2凸部52、53朝向支承軸24突出。 將連接第1凸部52的中心和支承軸24(筒部46)的直線 A1與連接第2凸部53的中心和支承軸24(筒部46)的直線A2 形成的角度作為B1時，角度B1被設定為大致90°。 10 凸台部49在蓋15和旋轉操作旋鈕12之間形成收容板簧 14的空間。 因為旋轉開關10是可進行10個位置切換的開關，所 以，多個凹部51以筒部46(支承軸24)為中心，按36°間隔均 等地設置成10個。 15 在基盤44的下面設有3個第1〜第3定位突起54〜56。將 角度B1的中心線作為C1時，在中心線C1上設置第1定位突 起54 ;在與該第1定位突起54同心的圓周上，並且在從第J 定位突起54向左右分別錯開90。的位置，設置第2和第3定位 突起55、56。 20 也可以省略第1定位突起54，只用第2和第3定位突起 55、56做接觸片13的定位。 如第6和7圖所示，接觸片13是用板狀的彈簧材料形成 的呈大致環狀的部件，該接觸片13由下述部分構成：嵌合 在旋轉操作旋鈕12上的直徑較大的半圓環狀的基部66，從 13 200828380 該基部66的兩端連續地延伸出來的直錄小的半圓環狀的 接點彈簧部67 ;形成在該接點彈簧部67上，與固定接點22 的多個外周端子31〜4G(參照第_)選擇性地接觸且滑動 的切換接點68 ;從基部66的中間部分向環内延伸，與固定 5接點22的中央端子29(第1圖）選擇性地接觸且滑動較共接 點69 ;朝向環狀的中心形成，嵌合在旋轉操作旋㈣的第 卜第2凸部52、53(第4圖）上的第卜第2後合部(嵌合孔)72、 73 ;設在基部66上，分別卡合在旋轉操作旋紐的第丄〜第3 定位突起54〜56上的第1〜第3定位部74〜76。 1〇 第1、第2嵌合部(嵌合孔)72,與第卜第2凸部52、53 一樣，直線A1和直線A2形成的角度B1設定為大致9〇。。 第1〜第3定位部74〜76與第1〜第3定位突起54〜56一 樣，在中心線C1上設置^定位部74，在與該第i定位部％ 同心的圓周上，並且在從第i定位部74向左右錯開9〇。的位 15置，設置第2、第3定位部75、76。 如前邊說明的那樣，在旋轉操作旋鈕丨2省略了第丨定位 突起54的情況下，第1定位部74也可以省略。 接點彈簧部67具有把半圓環分割成2條帶子的圓弧狀 的切縫(slit)77。該接點彈簧部67通過用圓弧狀的切縫”把 20切換接點分割成兩部分，提高與外周端子31〜4〇(參照第 η圖）接觸的可靠性。 公共接點69是兩股又子狀的接點，基於和切換接點68 同樣的考慮，具有兩個接點部79、79，以提高與固定接點 22的中央端子29接觸的可靠性。 14 200828380 弟1及第2彼合部72、73是嵌合在第4圖所示的第1及第2 凸部52、53上的嵌合孔，具有往第丨及第2凸部52、53上嵌 合時的引導面72a、73a. 第1〜第3定位部74〜76是嵌合在第4圖所示的第i〜第 5 3定位突起54〜56上的孔。第1和第2定位部74、75是圓孔。 第3定位部76是沿連接第2和第3定位部75、76的直線A3的長 孑L。 在旋轉開關10中，將接觸片13的定位部74〜76重合在 旋轉操作旋鈕12的定位凸起54〜56上，將接觸片13的嵌合 10部72、73嵌合在旋轉操作旋鈕12的凸部52、53上。此時， 旋轉操作旋鈕12的兩個凸部52、53朝著支承軸24突出，並 且要將凸部52、53嵌合在嵌合部72、73中。因而，接觸片 13的撓曲使嵌合部72、73向更加嵌合的方向作用，並且在 這兩個凸部52、53及嵌合部72、73的嵌合面上，可以具有 疋的角度。由此，吸收接觸片13相對於旋轉操作旋紐 的間隙此夠將接觸片13牢固地嵌合在旋轉操作旋钮a 上。因此，不需要將接觸片13緊固在旋轉操作旋鈕12上， 能夠實現裝配工時的減少。而且，由於只是把凸部52、53 甘欠合到嵌合部72、73上，所以能夠實現裝配強度的統一化。 20 而且，在開關架η的支承軸24的周圍配置接觸片13的 公共接點69及固定接點22的中央端子29，切換接點68及外 周端子31〜40位於這些公共接點69及中央端子29的外側， 因此，能夠提高開關的0N/0FF的角度精度，並可以有效地 利用開關架11的底面的空間。該結果能夠較多地設定切換 15 200828380 的接點數。即，可以實現多位置的旋轉開關1〇。 另外，由於在旋轉操作旋鈕12的上面外周部分形成板 簣14選擇性地嵌入的多個凹部51，所以，能夠把板簧14配 置在旋轉操作旋鈕12的上部。由此，可以便開關架丨丨的外 5形減小。該結果能夠實現旋轉開關10的小型化。 板簧14是卡合在開關架丨丨上、給予旋轉操作旋鈕丨二以 敲擊感的部件。 如第8〜12圖所示，板簧14是用板狀的彈簧材料形成的 部件。它由以下部分構成··半圓環狀的兩個彈簧部8丨、“ · 10延展片82、82，從這些彈簧部81、81的連接部分正對著向 直徑外側延伸出來；壓入片83、83，由這些延展片82 ^ 向開關架11(第1圖）側彎曲形成、且壓入開關架丨丨的卡八部 25、25 ;兩個嵌合凸部84、84，在與連接這些懕 —1八片83、 83的直線垂直相交的位置、且分別設在兩個彈菁部$ 1 μ 15 上 85 選擇性地礙入旋轉操作旋鈕12的多個凹部51中私人 彈簧部81在壓入片83附近形成向下彎曲的第丨彎曲部 85，在嵌合凸部84附近形成向上彎曲的第2、彎曲部％、 86，與旋轉操作旋鈕12的多個凹部51水平吻合。 壓入片83擁有；在壓入到開關架11的卡合部25時，為 20 了能向卡合部25引導向外稍微彎曲的引導部87和為了能夠 牢固地壓入到卡合部25向内收縮彎曲的内彎曲部狀。引導 部87具有，形成比内彎曲部88的寬度寬，增強壓入強产的 凸緣部（壓入部）89、89。 開關架11的卡合部25、25具有空間SI、S1，該空間 16 200828380 • S1使壓入片83、83在第丨2圖所示的箭頭El方向能夠自由的 向壓入片83、83的外側移動。壓入片83、83插入卡合部乃、 25進行裝配。從而，板簧14的嵌合凸部料在從第丨圖所示的 旋轉操作旋鈕12的一個凹部51移到相鄰的凹部51時，由於 、 5在箭頭E1方向允許板簧14移動，因此，可以得到良好的敲 擊感。 ° 由於將凸緣部（壓入部）89、89設在壓入片83的前端，所 以，壓入片83、83在第Π圖所示的箭頭m、D1方向被牢固 地固定，但是，由於不阻礙在第12圖所示的箭頭E1方向的 10移動，因此可以得到如上面所述的良好的敲擊感。 如第11和12圖所示，開關架11在大致正方形的相對的 角上具有卡合板簧14的卡合部25、25。即，因為卡合部25、 25設在正方形的對角線上，所以能夠最長地設定該卡合部 25、25間的跨度。因此，板簧14以穩定的狀態被卡合在開 !5 關架11上。 因為板簧14具有壓入卡合部25、25的壓入片83、83， % 所以能夠防止板簧14相對於開關架11的鬆動。因此，可以 給予旋轉操作旋鈕12以擬合良好敲擊感。該結果能夠實現 操作感優良的旋轉開關10。 20 第1圖所示的蓋15用金屬板材製成。該蓋15由下述的部 分構成；從開關架11的上面覆蓋的大致矩形的蓋主體91， 在該蓋主體91的中央形成，面對旋轉操作旋鈕12的操作旋 鈕的貫通部（孔)92,在蓋主體91的相對的兩個角上形成，開 關架11的三角凸部26、26嵌入的角缺失部93、93 ;將蓋主 17 200828380 、 體91的四邊向下方彎曲形成，覆蓋在開關架11的側面的側 面部94、94、95、95 ;從相對的兩個側面部94、94各自的 兩端分別向外延伸，卡合在開關架11的突起部27、27上的 卡合片96、96。 5 蓋主體91利用開關架11將板簧14的延展片82、82上下 夾持，進一步加強板簧14對開關架11的固定，由此，板簧 14牢同地卡合在開關架11 土。 如第1圖所示，旋轉開關10通過把接觸片13嵌合在旋轉 操作旋紐12上，按照接觸片13、旋轉操作旋鈕12及板簧14 10的順序把它們一併收容到開關架11中，然後把蓋15蓋在開 關架11上，進行裝配。由於構成部件僅有，固定接點22披 一體地設置的開關架11 ;與固定接點22接觸的接觸片π ; 操作接觸片13的旋轉操作旋鈕12 ;給予該旋轉操作旋鈕12 以敲擊感的板簧14 ;蓋在開關架η上的蓋15五個部件，所 15 以能夠實現開關構造的簡單化。 而且，因為旋轉開關1〇是在開關架η上按照接觸片 13、旋轉操作旋姐12及板簧14這樣的順序將它們放入支承 軸24的構造，所以，例如與將板簧14配置在旋轉操作旋鈕 12的侧面的情況相比，能夠實現旋轉開關1〇的小型化。 20 第13圖是第1圖所示的旋轉開關的固定接點的平面圖。 如前面說明的那樣’因為旋轉開關10是可做1〇個位置 切換的開關，所以如第13圖所示，固定接點22是在架主體 21上設置1個中央端子29，且在架主體21上設置1〇個外周端 子31〜40。即，外周端子31〜40按36。的間隔均等地設在中 18 200828380 央端子29的周圍。在第13圖中，斜線部分是與接觸片13的 公共接點69和切換接點68的接觸、滑動部分。 第14圖表示第1圖所示的旋轉開關的另一種實施例的 固定接點。 5 第14圖所示的固定接點1〇〇是可進行8個位置切換的旋 轉開關用的接點，包含；與接觸片13(第1圖）的公共接點69 接觸的1個中央端子109和與接觸片13的切換接點68接觸的 8個外周端子1〇1〜1〇8。 8個外周端子1〇1〜1〇8按45。的間隔均等地設在中央端 1〇子的周圍。晝斜線的部分是與接觸片13的公共接點69和切 換接點6 8的接觸、滑動部分。 第15圖表示旋轉開關的另一種實施例的固定接點。 第15圖所示的固定接點11〇是可進行12個位置切換的 旋轉開關用的接點，包含：與接觸片13(第丨圖）的公共接點 15 69接觸m個中央端子129和與接觸片13的切換接點的接觸 的12個外周端子111〜122。 12個外周端子1Π〜122按3〇。的間隔均等地設在中央 端子129的周圍。畫斜線的部分是與接觸片13的公共接點69 和切換接點68的接觸、滑動部分。 20 12個位置的外周端子1H〜122通過在第14圖所示的8 個位置的外周端子101〜108中、外周端子102、104、106、 108上为別追加加工第15圖所示的切槽F1〜F4而製造。即， 通過共用8個位置的固定接點1〇〇用的模具和12個位置的固 疋接點110用的模具，一邊降低固定接點100、110的模具 19 200828380 ^ 費，一邊可以實現切換接點數不同的旋轉開關。 如第4圖所示，在本實施例中表示了在旋轉操作旋鈕12 上形成2個凸部52、53的例子。但是，並不僅限於此，安裝 接觸片的凸部也可以是3個以上。 5 【圖式簡單說明】 第1圖是本發明涉及的一個實施例的旋轉開關的分解 ' 立體圖； 第2圖是第1圖所示的旋轉開關的平面圖； 第3圖是沿第2圖的3-3線剖開的剖面圖； 10 第4圖是將接觸片安裝在第1圖所示的旋轉操作旋鈕的 下面的仰視圖； 第5圖是沿第4圖的5-5線剖開的剖面圖； 第6圖是第1圖所示的接觸片的平面圖； 第7圖是上述接觸片的側面圖； 15 第8圖是第1圖所示的板簧的平面圖； 第9圖是上述板簧的正面圖； 第10圖是上述板簧的側面圖； 第11圖是把板簧裝配在第1圖所示的開關架上的平面 圖， - 20 第12圖是沿第11圖的12-12線剖開的剖面圖； 第13圖是在第1圖所示的開關架上設置的固定接點的 平面圖； 第14圖是表示第13圖所示的固定接點的另一種實施例 的平面圖； 20 200828380 第15圖是表示第14圖所示的固定接點的另一種實施例 的平面圖； 第16圖是目前的旋轉開關的平面圖； 第17圖是第16圖所示的旋轉開關的分解剖面圖。 5 【主要元件符號說明】 10…旋轉開關 45…操作盤 ll···開關架 46…筒部 12…旋紐 47,48…凸部 13…接觸片 49…凸台部 14…板簣 51…凹部 15…蓋 52,53…凸部 21…架主體 54-56…定位突起 22…固定接點 57…錐部 23…收容凹部 58···掏空部 24…支承轴 61…斜面 25卡合部 62…台階部 26…凸部 66…基部 27…突起部 67···彈簧部 29…中央端子 68···切換接點 31，32,33,34,35,36,37,38,39,40 69…公共接點 …外周端子 72,73…被合部 41…斜面 72a，73a…引導面 42…架台階部 74-76…定位部 44…基盤 77…切縫 21 200828380 79…接點部 81…彈簧部 82…延展片 83…壓入片 84···凸部 85…彎曲部 86…彎曲部 87…引導部 88…彎曲部 89…凸緣部 91…蓋主體 92…貫通部 93…角缺失部 94,95···侧面部 96—^合片 100···固定接點 101-108···外周端子 109···中央端子 110···固定接點 111-122…外周端子 129···中央端子 200…旋轉開關 201···開關架 202···固定接點 202a…中央接點 202b…外周接點 203···旋钮 204…接觸片 205…棘輪機構 206…箱 211…滾珠 212…滾珠 213···引導槽 214···引導槽 215…板簧 216…板簣 22L Prior Art: J Background of the Invention At present, a plurality of fixed contacts are provided on a switch frame (switch seat), and a rotary operation knob (rotary plate) that is switched as a switch is rotatably mounted on the switch frame at the rotation A contact piece (rotor) is mounted on the operation knob to bring the contact piece into contact with the fixed contact of the switch frame, and such a rotary switch has been known. Such a rotary switch has a structure in which a concave portion is provided at a predetermined interval on the outer circumference 15 of the rotary operation knob, and a ratchet mechanism such as a leaf spring is provided in the concave portion. As disclosed in Japanese Laid-Open Patent Publication No. 2001-35309, the ratchet mechanism is a rotary switch composed of a leaf spring and a ball, and such disclosure has been known. According to the 16th and 17th drawings, the rotary switch disclosed in Japanese Laid-Open Patent Publication No. 2001-35309 is explained as follows: 20 The rotary switch 200 shown in Figs. 16 and 17 is composed of the following components; a substantially rectangular shape formed of an insulator. a switch frame 2〇1; a fixed contact 202 provided on the switch frame 2〇1; a rotary operation knob 203 rotatably mounted on the switch frame 2〇1; mounted on the rotary operation knob 2〇3 and The contact piece 204 contacting the fixed contact 202 (refer to FIG. 17); a pair of ratchet mechanisms 205 sandwiched between the switch frame 2〇1 and the rotation 5 200828380 * operation knob 2〇3 and covering the switch frame 201 and rotating The knob 203, the contact piece 204, and the ratchet mechanism 205 are housed in the case 206 in the switch holder 201 (refer to Fig. 17). The fixed contact 202 has a plurality of outer peripheral contacts 202b provided on the outer circumference of the outer circumference of the central contact 202a at the center of the annular center contacts 202a and 5. A pair of ratchet mechanisms 205 are provided on the opposite sides of the above-described switch frame 201, and the rotary operation knobs 203 are disposed to face each other. The ratchet mechanism 205 is composed of a ball 10 211 on one side that is in contact with the rotary operation knob 203, a guide groove 213 provided on one side of the switch frame 201, and a ball 211 on one side is pushed toward the rotary operation knob 2〇3. a leaf spring 215 on one side of the press; a ball 212 on the other side in contact with the rotary operation knob 203; and a guide groove 214 provided on the other side of the switch frame 201, and the ball 212 on the other side is pressed toward the rotary operation knob 203 The leaf spring 216 on the other side. Therefore, the conventional rotary switch 200 rotates the operation knob 203 by bringing the contact piece 204 into contact with the fixed contact 202, and causes the contact piece 204 to slide on the fixed contact 202 to perform circuit switching. At this time, the ratchet mechanism 205 produces a moderate click feeling. However, the conventional rotary switch 200 is disposed on the opposite sides of the switch frame 201 by the pair of ratchet mechanisms 205. Accordingly, the outer shape of the rotary switch 200 is increased, which hinders the miniaturization of the rotary switch 200. Moreover, since the pair of ratchet mechanisms 205 are constituted by the two balls 211, 212 and the pair of leaf springs 215, 216, the configuration of the rotary switch 200 becomes complicated. Further, in order to push the balls 211, 212 against the rotary operation knob 203, the structure 6 200828380 is formed such that the ends of the plate 215, 216 are kept in a gap with respect to the guide grooves 213, 214, and the long leaf springs 215, 216 are inserted. Guide slots 213, 214. Therefore, a certain gap is required between the guide grooves 213, 214 and the ends of the leaf springs 215, 216. Therefore, when the rotary operation rotator 203 is operated by the rotation operation, the leaf springs 215, 216 exhibit a jumping phenomenon in the guide grooves 213, 214, and a feeling of knocking with a good feeling of not being obtained is obtained. OBJECTS OF THE INVENTION Therefore, it is desired to obtain a rotary switch that can realize a reduction in the size of the switch, and that can realize a reduction in the size of the switch at a low cost, and a rotary switch having an excellent knocking feeling and excellent insertion feeling. Further, it is desirable to obtain a rotary switch capable of setting a large number of contacts to be switched. According to the present invention, it is possible to provide a rotary switch composed of the following components, a rectangular switch frame; a fixed contact is integrally provided on the bottom surface, and a cylindrical support shaft 'in the center is formed of an insulator; a disk-shaped rotary operation a knob provided with a cylindrical portion rotatably fitted on the support shaft; a contact piece fitted to the rotary operation knob and in contact with the fixed contact; an annular leaf spring 'engaged in the switch And rotating the knob to give a tapping feeling; the cover is attached to the switch frame, and the two are coaxial with the support shaft in the order of the contact piece, the 20 rotation operation knob and the leaf spring And contain it. Thus, in the present invention, the rotary switch is assembled by fitting the contact piece to the rotary operation knob, and accommodating them together on the switch frame in the order of the contact piece, the rotary operation knob, and the leaf spring, and then closing the cover Covered on the switch 7 200828380, because the components only have fixed contacts, the switch frame is set up, the contact with the solid contact (4), the lining (4) is operated by the rotary knob, and the rotary operation is tapped. The sensible plate sill and the cover on the switch frame enable simplification of the switch structure. 5 10 And because the cymbal is arranged in the order of the contact piece, the rotary operation knob and the leaf spring, the shackles that are placed coaxially with the support vehicle on the switch frame, for example, and the plate yellow is placed outside the rotary operation knob. In comparison with the case, the size of the rotary switch can be reduced. The structure is intended to have at least two convex portions that are attached to the above-mentioned support two to mount the above-mentioned contact piece, and a positioning projection that performs the above-mentioned connection::: one. Preferably, the contact piece is a joint portion, and each of the convex portions is fitted with a joint portion and at least one of the positioning portions fitted to the positioning projection. Operate one part. At this time, the ::=t portion is fitted to the rotation convex portion to be directed to the support shaft, and the deflection of at least two contact pieces for fitting the fitting portion causes the fitting portion to be convex toward a + 4 - °. Therefore, the joint surface of the convex portion and the fitting portion can be moved in the direction of the angle between the two contact pieces with respect to the rotary operation knob to absorb and fit on the rotary operation knob. Therefore, it is possible to firmly hold the contact piece on the rotary operation knob, etc., and it is known that the contact piece is fastened, and since only the convex portion is fitted, the current assembly time is reduced. Uniform intensity. Therefore, it is possible to realize the fitting. The above-mentioned contact piece of the above-mentioned contact piece is preferably provided with a common contact provided around the above-mentioned support shaft of the above-mentioned switch frame and a switching contact provided outside the diameter of the common contact. Preferably, the fixed contact has a central end 5 that is in contact with the common contact around the support shaft of the switch frame, and a plurality of outer peripheral terminals that are provided on an outer circumference of the center terminal and that are in contact with the switching point. . Therefore, the angular accuracy of the ΟΝ/OFF of the switch can be improved, and the space of the bottom surface of the switch frame can be effectively utilized. As a result, the number of switched contacts can be set more. That is, a multi-position rotary switch can be realized. 1〇 The above-described rotary operation knob is ideally constructed; it has a plurality of recesses around the outer periphery of the disk shape to generate a knocking feeling during the rotation operation. The plate yellow is preferably configured to have a fitting convex portion that is selectively inserted into the plurality of concave portions in accordance with the rotation of the rotary operation knob. Thus, the plate 可以 can be placed on the upper portion of the rotary operation knob. Therefore, the outer shape 15 of the switch frame can be reduced, and the size of the rotary switch can be reduced. Preferably, the switch frame has an engaging portion that engages the leaf springs at opposite corners of the square switch frame, and the leaf spring has a press-fit piece that is press-fitted into each of the engaging portions. That is, since the engaging portions of the leaf springs are provided at the two corners on the diagonal line of the square switch frame, the span between the engaging portions can be set to the longest, and the leaf spring is engaged in a stable state. On the switch stand. Further, since the press-fitting piece pressed into the engaging portion is provided on the leaf spring, the gap of the leaf spring with respect to the switch frame can be prevented, and the rotary operation knob can be given to fit a good knocking feeling. As a result, a rotary switch excellent in operational feeling can be realized. 9 200828380. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view of a rotary switch according to an embodiment of the present invention; Fig. 2 is a plan view of the rotary switch shown in Fig. 1; A cross-sectional view taken along line 3-3; 苐4 is a bottom view of the contact piece mounted on the lower side of the rotary operation knob shown in Fig. 1; the younger figure 5 is cut along line 5-5 of Fig. 4 Fig. 6 is a plan view of the contact piece shown in Fig. 1; Fig. 7 is a side view of the contact piece; Fig. 8 is a plan view of the leaf spring shown in Fig. 1; Fig. 10 is a side view of the leaf spring; Fig. 11 is a plan view showing a plane spring mounted on the switch frame shown in Fig. 1; Fig. 12 is a view along the eleventh Fig. 13 is a plan view of the fixed contact provided on the switch frame shown in Fig. 1; Fig. 14 is another view of the fixed contact shown in Fig. 13 Fig. 15 is a plan view showing another embodiment of the fixed contact shown in Fig. 14; Fig. 16 is a current rotary switch Figure 17 is an exploded cross-sectional view of the rotary switch shown in Figure 16. 10 200828380 C. Carrying out the cold type 3 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in the first, second and third figures, the rotary switch 10 is constituted by the following: a large 5-way switch frame 11; a rotary operation knob 12 rotatably mounted on the switch frame 11; mounted in the rotation The contact piece π on the operation knob 12; the leaf spring 14 engaged with the switch frame 11; and the cover 15 covering the switch frame 11. The switch frame is composed of a frame main body 21 made of an insulating material, a fixed contact 22 provided on the frame main body 21, and a sliding portion of the fixed contact 22 for sliding the contact piece 13 10 to be exposed. a housing recess 23 provided in the holder body 21; a cylindrical support shaft 24 provided substantially at the center of the housing recess 23; and engaging portions (pressing grooves) 25, 25 provided at opposite corners of the holder main body 21. The triangular protrusions 26, 26 which are perpendicularly intersected with the two engaging portions 25, 25 and are disposed at opposite corners of the frame body 21; on the sides of the two sides of the frame body 21, two are provided on each side Protrusions 27, 27. The fixed contact 22 is a central terminal 29 which is integrally provided on the bottom surface of the switch frame 11 and which is surrounded by the δ and the support shaft 24, and the contact piece 13 is in contact with and slid, and is provided at the periphery of the center terminal 29. The contact piece 13 is configured by a plurality of outer peripheral terminals 31, 32, 33', 34, 35, 36, 37, 20 38, 39, 4 (see Fig. 11) which are in contact with and slid. Since the rotary switch 10 is a switch that can switch between 10 positions, the center terminal 29 is provided in the holder main body 21, and the outer peripheral terminals 31 to 40 are provided in the holder main body 21. The housing recess 23 is a portion in which the contact piece 13, the rotary operation knob 12, and the leaf spring 14 11 200828380 are accommodated coaxially with the support shaft 24 in the above-described order. The support shaft 24 projects upward from the bottom surface of the frame main body 21 to rotatably support the rotary operation knob 12. The engaging portion 25 presses the leaf spring 14 and firmly supports the leaf spring 14. The projection 27 is a portion in which the cover 15 is engaged with the switch frame 11, a frame slope 41 is formed in the upper portion of the frame body 21, and a frame step portion 42 is formed in the lower portion of the slope 41. The projection 27 guides the cover 15 by the slope surface 41 when the cover 15 is mounted, and the cover 15 is attached to the frame main body 21 at a position where the step portion 42 engages the cover 15. The rotary operation knob 12 is composed of a substantially disk-shaped base plate 1044, an operation portion 45 that protrudes upward from the center of the base plate 44, and can be rotated, and extends downward from the center of the base plate 44 to be rotatably a cylindrical tubular portion 46 (Fig. 3) fitted to the support shaft 24; sliding projections 47, 48 provided on the upper surface of the base plate 44 to reduce friction with the crucible 15, and provided on the upper surface of the base plate 44 a boss portion 49 for accommodating the leaf spring 14 in the vicinity of the outer periphery; a plurality of concave portions 51 provided on the boss portion 49 15 and fitted to the leaf spring 14, and a cylindrical portion 46 directed to the base plate 44 and the first plate yellow 14 The second convex portions 52 and 53 (see FIG. 4); the first to third positioning projections 54 to 56 which are provided on the lower surface of the base 44 to position the contact piece 13, and the operation portion 45 is substantially D in plan view. The projecting projection has a taper 57 which is easily fitted to the operation knob (not shown) at the front end 2, and a hollow portion 58 which prevents shrinkage or deformation during molding. The sliding projections 47, 48 form concentric circles. As shown in Figs. 4 and 5, the first convex portion 52 projects toward the tubular portion 46, and is constituted by a slope 61 which is formed obliquely downward from the base plate 44 and a step portion 62 which is formed in the upper portion of the slope 61. The convex portion 52 guides the contact piece 13 with the inclined surface 61 when the contact piece 13 is mounted, and the contact piece 13 is attached to the rotary operation knob 12 by a portion of the contact piece 13 being engaged with the step portion 62. The second convex portion 53 has the same shape as the first convex portion 52. 5 As shown in Figs. 3 and 4, the support shaft 24 of the switch frame 11 is inserted into the tubular portion 46. The first and second convex portions 52 and 53 protrude toward the support shaft 24 . When the angle between the straight line A1 connecting the center of the first convex portion 52 and the support shaft 24 (the tubular portion 46) and the straight line A2 connecting the center of the second convex portion 53 and the support shaft 24 (the tubular portion 46) is B1, the angle is B1 is set to be approximately 90°. The boss portion 49 forms a space for accommodating the leaf spring 14 between the cover 15 and the rotary operation knob 12. Since the rotary switch 10 is a switch that can switch between 10 positions, the plurality of recesses 51 are uniformly arranged at intervals of 36° around the tubular portion 46 (the support shaft 24). 15 Three first to third positioning projections 54 to 56 are provided on the lower surface of the base 44. When the center line of the angle B1 is C1, the first positioning projection 54 is provided on the center line C1, and is shifted from the J positioning projection 54 to the left and right by 90 on the circumference concentric with the first positioning projection 54. The position of the second and third positioning projections 55, 56 is set. Further, the first positioning projections 54 may be omitted, and only the second and third positioning projections 55, 56 may be used for positioning of the contact piece 13. As shown in Figs. 6 and 7, the contact piece 13 is a substantially annular member formed of a plate-like spring material, and the contact piece 13 is composed of a portion having a larger diameter fitted to the rotary operation knob 12. a semi-annular base portion 66, a semi-annular contact spring portion 67 extending continuously from both ends of the base portion 66 from 13 200828380; formed on the contact spring portion 67 and fixed contact A plurality of outer peripheral terminals 31 to 4G (refer to the first _) 22 selectively contact and slide the switching contact 68; extend from the intermediate portion of the base portion 66 into the ring, and the central terminal 29 of the fixed 5 contact 22 (first Figure 2) selectively contacts and slides over the common contact point 69; is formed toward the center of the ring, and is fitted to the second and second of the second convex portions 52, 53 (Fig. 4) of the rotational operation knob (four) The joint portions (fitting holes) 72 and 73 are provided on the base portion 66, and are respectively engaged with the first to third positioning portions 74 to 76 on the third to third positioning projections 54 to 56 of the rotary operation knob. 1〇 The first and second fitting portions (fitting holes) 72 are the same as the second and second convex portions 52 and 53. The angle B1 formed by the straight line A1 and the straight line A2 is set to be approximately 9 inches. . Similarly to the first to third positioning projections 54 to 56, the first to third positioning portions 74 to 76 are provided with a positioning portion 74 on the center line C1, on the circumference concentric with the i-th positioning portion %, and in the The i-th positioning portion 74 is shifted to the right and left by 9 turns. The position 15 is set, and the second and third positioning portions 75 and 76 are provided. As described above, when the second positioning projection 54 is omitted when the rotary operation knob 2 is omitted, the first positioning portion 74 may be omitted. The contact spring portion 67 has an arc-shaped slit 77 that divides the half ring into two tapes. The contact spring portion 67 divides the 20-switching contact into two portions by an arc-shaped slit, thereby improving the reliability of contact with the outer peripheral terminals 31 to 4 (see the n-th image). The common contact 69 is two. The contacts of the strands and the sub-shapes have two contact portions 79, 79 based on the same considerations as the switching contacts 68 to improve the reliability of contact with the center terminal 29 of the fixed contacts 22. 14 200828380 Brother 1 and The fitting portions 72 and 73 are fitting holes that are fitted into the first and second convex portions 52 and 53 shown in Fig. 4, and have fittings to the second and second convex portions 52 and 53. Guide surfaces 72a and 73a. The first to third positioning portions 74 to 76 are holes that are fitted to the i-th to fifth positioning projections 54 to 56 shown in Fig. 4. The first and second positioning portions 74, 75 is a circular hole. The third positioning portion 76 is a long 孑L along a line A3 connecting the second and third positioning portions 75 and 76. In the rotary switch 10, the positioning portions 74 to 76 of the contact piece 13 are superposed on each other. On the positioning projections 54 to 56 of the operation knob 12, the fitting 10 portions 72, 73 of the contact piece 13 are fitted to the convex portions 52, 53 of the rotary operation knob 12. At this time, the two projections of the operation knob 12 are rotated. Department 52, 53 The support shaft 24 is protruded, and the convex portions 52, 53 are to be fitted in the fitting portions 72, 73. Thus, the deflection of the contact piece 13 causes the fitting portions 72, 73 to act in a more fitting direction, and The fitting faces of the two convex portions 52, 53 and the fitting portions 72, 73 may have an angle of 疋. Thereby, the gap of the absorbing contact piece 13 with respect to the rotary operation knob is sufficient to firmly hold the contact piece 13 It is fitted to the rotary operation knob a. Therefore, it is not necessary to fasten the contact piece 13 to the rotary operation knob 12, and the assembly man-hour can be reduced. Moreover, since only the convex portions 52, 53 are not fitted to the fitting In the portions 72 and 73, the assembly strength can be unified. 20 Further, the common contact 69 of the contact piece 13 and the center terminal 29 of the fixed contact 22 are disposed around the support shaft 24 of the switch frame n, and the contact point is switched. The 68 and the outer peripheral terminals 31 to 40 are located outside the common contact 69 and the center terminal 29. Therefore, the angular accuracy of the ON/OFF of the switch can be improved, and the space of the bottom surface of the switch frame 11 can be effectively utilized. Set the number of contacts for the switch 15 200828380. Further, the multi-position rotary switch 1 can be realized. Further, since the plurality of concave portions 51 selectively fitted by the plate 14 are formed on the outer peripheral portion of the upper surface of the rotary operation knob 12, the leaf spring 14 can be disposed on the rotary operation knob 12. Therefore, the outer shape of the switch frame can be reduced. This result can achieve miniaturization of the rotary switch 10. The leaf spring 14 is engaged with the switch frame, and is given a rotary operation knob. A member that strikes the feeling. As shown in Figs. 8 to 12, the leaf spring 14 is a member formed of a plate-shaped spring material. It is composed of the following parts: a semi-annular two spring portions 8A, "10 extending sheets 82, 82 extending from the connecting portions of the spring portions 81, 81 toward the outside of the diameter; the pressing piece 83 And 83, which are bent by the extension piece 82^ toward the switch frame 11 (Fig. 1) side, and are pressed into the card frame portions 25, 25 of the switch frame ;; the two fitting convex portions 84, 84 are connected These 懕-eight-eight 83, 83 straight lines intersect perpendicularly, and are respectively disposed on the two elastic portions $1 μ15 85 to selectively block the private spring portion 81 of the plurality of recesses 51 of the rotary operation knob 12. A second curved portion 85 that is bent downward is formed in the vicinity of the press-fitting piece 83, and the second and second bent portions % and 86 that are bent upward are formed in the vicinity of the fitting convex portion 84, and are horizontally fitted to the plurality of concave portions 51 of the rotary operation knob 12. The press-fitting piece 83 is provided; when pressed into the engaging portion 25 of the switch frame 11, the guide portion 87 which can be slightly bent outward toward the engaging portion 25 is 20 and can be firmly pressed into the engaging portion 25 The inner curved portion is inwardly contracted and curved. The guiding portion 87 has a width wider than that of the inner curved portion 88, and the reinforcing pressure is increased. Strongly produced flange portions (pressing portions) 89 and 89. The engaging portions 25 and 25 of the switch frame 11 have spaces SI and S1, and the space 16 200828380 • S1 causes the press-in pieces 83 and 83 to be as shown in FIG. The direction of the arrow El can be freely moved to the outside of the press-fitting pieces 83, 83. The press-fitting pieces 83, 83 are inserted into the engaging portions, and 25 are assembled. Thus, the fitting convex portion of the leaf spring 14 is drawn from the second drawing. When one concave portion 51 of the rotary operation knob 12 is shown moving to the adjacent concave portion 51, since the leaf spring 14 is allowed to move in the direction of the arrow E1, a good knocking feeling can be obtained. Since the press-fitting portions 89 and 89 are provided at the front end of the press-fitting piece 83, the press-fitting pieces 83 and 83 are firmly fixed in the directions of arrows m and D1 shown in the second figure, but they are not hindered in FIG. 10 movements in the direction of the arrow E1 are shown, so that a good knocking sensation as described above can be obtained. As shown in Figures 11 and 12, the switch frame 11 has a card that engages the leaf spring 14 at substantially square opposite corners. The joints 25, 25. That is, since the engaging portions 25, 25 are provided on the diagonal of the square, the longest The span between the engaging portions 25 and 25 is set. Therefore, the leaf spring 14 is engaged with the opening member 5 in a stable state. Since the leaf spring 14 has the press-in piece pressed into the engaging portions 25, 25. 83, 83, % Therefore, the looseness of the leaf spring 14 with respect to the switch frame 11 can be prevented. Therefore, the rotary operation knob 12 can be given to fit a good knocking feeling. This result can realize the rotary switch 10 excellent in the operational feeling. The cover 15 shown in the drawing is made of a metal plate. The cover 15 is constituted by a portion having a substantially rectangular cover body 91 covered from the upper surface of the switch frame 11, formed in the center of the cover main body 91, facing the rotation operation The through portion (hole) 92 of the operation knob of the knob 12 is formed at the opposite two corners of the cover body 91, and the triangular convex portions 26, 26 of the switch frame 11 are embedded with the missing corner portions 93, 93; the cover main 17 200828380 The four sides of the body 91 are bent downward to cover the side portions 94, 94, 95, 95 of the side surface of the switch frame 11; the two ends of the opposite side portions 94, 94 respectively extend outwardly and are engaged with each other. The engaging pieces 96, 96 on the projections 27, 27 of the switch frame 11. 5 The cover main body 91 clamps the extension pieces 82 and 82 of the leaf spring 14 up and down by the switch frame 11, and further strengthens the fixing of the switch frame 11 by the leaf spring 14, whereby the leaf spring 14 is firmly engaged with the switch frame 11 soil. . As shown in Fig. 1, the rotary switch 10 is housed on the rotary operation knob 12 by the contact piece 13, and is housed in the switch frame 11 in the order of the contact piece 13, the rotary operation knob 12, and the leaf spring 1410. Then, the cover 15 is then placed on the switch frame 11 for assembly. Since the constituent members are only the switch holder 11 in which the fixed contact 22 is integrally provided; the contact piece π in contact with the fixed contact 22; the rotary operation knob 12 of the contact piece 13 is operated; the rotary operation knob 12 is given a tapping feeling The leaf spring 14; the cover 15 covering the switch frame n has five components 15 to enable simplification of the switch configuration. Further, since the rotary switch 1A is configured to put them into the support shaft 24 in the order of the contact piece 13, the rotary operation rotary sister 12, and the leaf spring 14 in the switch frame n, for example, the leaf spring 14 is disposed at The size of the rotary switch 1A can be reduced as compared with the case where the side surface of the operation knob 12 is rotated. 20 Fig. 13 is a plan view showing the fixed contact of the rotary switch shown in Fig. 1. As described above, since the rotary switch 10 is a switch that can perform one-position switching, as shown in FIG. 13, the fixed contact 22 is provided with one central terminal 29 on the frame main body 21, and is in the frame main body. One of the outer peripheral terminals 31 to 40 is provided on the 2121. That is, the outer peripheral terminals 31 to 40 are 36. The interval is equally located around the central terminal 29 of 200828380. In Fig. 13, the hatched portion is a contact and sliding portion with the common contact 69 of the contact piece 13 and the switching contact 68. Fig. 14 is a view showing a fixed contact of another embodiment of the rotary switch shown in Fig. 1. 5 The fixed contact 1〇〇 shown in Fig. 14 is a contact for a rotary switch capable of switching between eight positions, and includes one central terminal that is in contact with the common contact 69 of the contact piece 13 (Fig. 1). 109 and eight outer peripheral terminals 1〇1 to 1〇8 which are in contact with the switching contact 68 of the contact piece 13. 8 peripheral terminals 1〇1~1〇8 press 45. The interval is equally located around the center end of the dice. The portion of the skew line is the contact and sliding portion with the common contact 69 of the contact piece 13 and the switching contact 68. Figure 15 shows a fixed joint of another embodiment of the rotary switch. The fixed contact 11A shown in Fig. 15 is a contact for a rotary switch capable of switching between 12 positions, and includes: touching the central terminals 129 and the common contact 15 69 of the contact piece 13 (Fig. 13) and Twelve peripheral terminals 111 to 122 that are in contact with the switching contacts of the contact piece 13. 12 peripheral terminals 1Π to 122 are pressed 3〇. The intervals are equally spaced around the center terminal 129. The portion drawn obliquely is the contact and sliding portion with the common contact 69 of the contact piece 13 and the switching contact 68. In the outer peripheral terminals 101 to 108 of the eight positions shown in FIG. 14 and the outer peripheral terminals 102, 104, 106, and 108, the outer peripheral terminals 1H to 122 of the four positions are additionally processed as shown in FIG. It is manufactured by the grooves F1 to F4. In other words, by sharing the mold for the fixed contact 1 at 8 positions and the mold for the solid contact 110 at the 12 positions, the mold can be switched while reducing the mold 19 of the fixed contacts 100 and 110. Rotary switches with different contacts. As shown in Fig. 4, in the present embodiment, an example in which two convex portions 52, 53 are formed on the rotary operation knob 12 is shown. However, the present invention is not limited thereto, and the number of the convex portions to which the contact piece is attached may be three or more. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a rotary switch according to an embodiment of the present invention; FIG. 2 is a plan view of the rotary switch shown in FIG. 1; 3-3 line cutaway view; 10 Fig. 4 is a bottom view of the contact piece mounted on the lower side of the rotary operation knob shown in Fig. 1; Fig. 5 is taken along line 5-5 of Fig. 4 Fig. 6 is a plan view of the contact piece shown in Fig. 1; Fig. 7 is a side view of the contact piece; Fig. 8 is a plan view of the leaf spring shown in Fig. 1; Fig. 10 is a side view of the leaf spring; Fig. 11 is a plan view showing the leaf spring mounted on the switch frame shown in Fig. 1, - 20 Fig. 12 is a view along the eleventh Fig. 13 is a plan view showing a fixed contact provided on the switch frame shown in Fig. 1; Fig. 14 is a view showing another embodiment of the fixed contact shown in Fig. 13. Plan view of an example; 20 200828380 Figure 15 is a plan view showing another embodiment of the fixed contact shown in Figure 14; Figure 16 is the current rotation 17 an exploded sectional view of FIG. 16 is a rotary switch shown in FIG; plan view of a switch. 5 [Description of main component symbols] 10... Rotary switch 45... Operation panel ll···Switch holder 46...Tube 12...Rotary knob 47,48...Protrusion 13...Contact sheet 49...Bucket portion 14...Board 51... Concave portion 15...cover 52,53...convex portion 21...frame main body 54-56...positioning projection 22...fixed contact 57...cone portion 23...receiving recess 58...hollow portion 24...support shaft 61...inclined surface 25 Part 62...step portion 26...protrusion portion 66...base portion 27...projection portion 67···spring portion 29...center terminal 68···Switching contacts 31, 32, 33, 34, 35, 36, 37, 38, 39 , 40 69... Common contact... Peripheral terminal 72, 73... Parted portion 41... Slope 72a, 73a... Guide surface 42... Rack step 74-76... Positioning portion 44... Base plate 77...Slit 21 200828380 79... The portion 81 is a spring portion 82, an extension piece 83, a press-fitting piece 84, a convex portion 85, a curved portion 86, a curved portion 87, a guide portion 88, a curved portion 89, a flange portion 91, a cover main body 92, and a penetration portion 93. ...corner missing portion 94, 95···side portion 96—^ piece 100···fixed contact 101-108···outer terminal 109···center terminal 110···fixed contact 111-122... Terminal 129···Center terminal 200...Rotary switch 201···Switch frame 202···Fixed contact 202a...Center contact 202b...Outer circumference contact 203···Knob 204...Contact piece 205...Ratch mechanism 206...Box 211...ball 212...ball 213···guide groove 214···guide groove 215...plate spring 216...plate 篑22