200947489 六、發明說明： 【發明所屬之技術領域】 本發明是關於多方向輸入裝置，特別是關於適用在行 動電話裝置和遊戲機用控制器等的方位輸入操作的多方向 輸入裝置。 【先前技術】 〇 以往，藉由改變感壓導電橡膠的內部電阻來檢測方位 輸入操作的多方向輸入裝置（例如參照專利文獻1)曾被提 出。該多方向輸入裝置，是在基板上隔著90°間隔來形成 4組的接點電極（分別由一對電極構成），在這些接點電極 上分別配置有感壓導電橡膠》藉由伴隨桿件的傾倒操作而 傾倒的鍵頂部，來按壓該傾倒方向的感壓導電橡膠。而且 ，伴隨與該按壓對應的感壓導電橡膠的內部電阻的減少， 接點電極的一對電極間的電阻値會減少，而利用此現象來 © 檢測方位輸入操作。 [專利文獻1]日本特開2002-278695號公報。 【發明內容】 .但是，在上述習知的多方向輸入裝置，藉由板彈簧始 終將鍵頂部朝按壓感壓導電橡膠的方向彈壓，因此即使是 在初始狀態，一對電極間的電姐値也會減少。如此，伴隨 鍵頂部的傾倒所產生的電阻値變化量減少，存在著無法獲 得期望輸出的問題。 -5- 200947489 本發明是有鑒於上述問題點而開發完成的，其目的在 於提供一種多方向輸入裝置，能確保伴隨操作構件的傾倒 所產生的電阻値變化量而獲得期望輸出。 本發明的多方向輸入裝置，係具備：設置有按壓部的 操作構件、收容前述按壓部並以讓前述操作構件一部分露 出的狀態將該操作構件保持成能朝多方向傾倒的外殻、配 置在前述外殼內而使前述操作構件回位到初始位置的回位 用彈簧、在前述外殼的內底面以既定間隔配置複數個一對 © 接點而構成的固定接點、與前述固定接點對置的感壓導電 橡膠；伴隨前述操作構件的傾倒，用前述按壓部按壓前述 感壓導電橡膠，藉此改變前述固定接點的一對接點間的電 阻値之多方向輸入裝置，其特徵在於：前述回位用彈簧配 置在前述感壓導電橡膠和前述操作構件之間，將前述操作 構件彈壓而使其遠離前述感壓導電橡膠。 依據上述多方向輸入裝置，是將回位用彈簧配置在感 壓導電橡膠和操作構件之間，並將操作構件彈壓而使其遠 〇 離感壓導電橡膠，因此，受到回位用彈簧的彈壓力的作用 而使感壓導電橡膠不易被操作構件按壓。如此，在操作構 件處於初始位置的情況，一對接點間的電阻値不易變化， 因此能夠確保伴隨操作構件的傾倒所產生的電阻値變化量 而獲得期望輸出。 上述多方向輸入裝置較佳爲，前述回位用彈簧在初始 位置將前述操作構件彈壓，而使其對前述感壓導電橡膠成 爲非按壓狀態。在此情況，能夠確實防止處於初始位置時 -6- 200947489 ，感壓導電橡膠被操作構件按壓的事態，藉此 止一對接點間的電阻値變化的事態。如此，能 操作構件的傾倒所產生的電阻値變化量而確實 輸出。 另外，上述多方向輸入裝置較佳爲，前述 按壓部，在與前述固定接點的一對接點對應的 感壓導電橡膠側突出。在此情況，按壓部在與 Φ 應的位置朝感壓導電橡膠側突出，因此能確實 導電橡膠之與一對固定接點對應的部分，藉此 一對接點間的電阻値。 再者，上述多方向輸入裝置較佳爲，前述 由板彈簧構成，在其周方向隔著既定間隔具有 ，藉由前述複數個臂部在不與前述操作構件的 的位置被前述外殻所保持。在此情況，回位用 複數個臂部而在不與操作構件的按壓部接觸的 q 所保持，因此能在避免與回位用彈簧接觸的狀 按壓部來直接按壓感壓導電橡膠，如此能夠得 比輸出。 在此情況，前述回位用彈簧較佳爲具有環 環狀部向外側延伸出前述複數個臂部，且在鄰 部之間分別配置前述按壓部。依據上述構造’ 用彈簧的鄰接的臂部之間配置按壓部，在操作 會妨礙按壓部的按壓動作，並且回位用彈簧容 此能夠提昇多方向輸入裝置的操作性。 能確實地防 夠確保伴隨 地獲得期望 操作構件的 位置朝前述 一對接點對 地按壓感壓 能有效改變 回位用彈簧 複數個臂部 按壓部接觸 彈簧是藉由 位置被外殼 態下，藉由 到準確的類 狀部，從該 接的前述臂 由於在回位 時，臂部不 易變形，因 200947489 再者，上述多方向輸入裝置較佳爲，前述外殻俯視大 致呈矩形形狀’在其角部沿周方向配置前述一對接點β在 此情況，由於在外殼的容易成爲閒置空間的角部設置一對 接點，能夠有效活用外殻內的空間而謀求裝置的小型化。 例如’上述多方向輸入裝置較佳爲，前述感壓導電橡 膠’是藉由前述操作構件的按壓部的按壓而產生局部變形 的一個板狀構件所構成。在此情況，因爲是由一個板狀構 件來構成感壓導電橡膠’在感壓導電橡膠的任意部分被按 壓的情況下，都能夠得到統一的特性。 此外，上述多方向輸入裝置可具備：由配置在前述外 殻的內底面的按鈕開關用的一對接點所構成的固定接點、 對應於對前述操作構件的按壓操作而與前述按鈕開關用的 一對接點接觸的圓頂狀的可動接點；在前述感壓導電橡膠 設置其內徑比前述圓頂狀的可動接點的外徑更小的開口部 ，使前述可動接點的外緣部的一部分重疊於前述感壓導電 橡膠的前述開口部附近的一部分。在此情況，由於使可動 接點的外緣部的一部分重疊於感壓導電橡膠的開口部附近 的一部分，相較於不重疊的情況，能夠使裝置的外形小型 化。 根據本發明，由於使操作構件回位到初始位置的回位 用彈簧配置在感壓導電橡膠和操作構件之間’將操作構件 壓彈而使其遠離感壓導電橡膠’因此，受到回位用彈簧的 彈壓力的作用而使感壓導電橡膠不易被操作構件按壓。如 此’在操作構件處於初始位置的情況下，一對固定接點間 -8 - 200947489 的電阻値不易變化，因此能夠確保伴隨操作構件的傾倒所 產生的電阻値變化量而獲得期望輸出。 【實施方式】 以下，參照附圖詳細說明本發明的一實施形態。本實 施形態的多方向輸入裝置，是例如在行動電話裝置和遊戲 機用控制器等的方位輸入操作及按壓輸入操作所使用的裝 〇 置。此外，本實施形態的多方向輸入裝置的用途並不限於 此，可以作適當變更。 第1圖是本發明一實施形態的多方向輸入裝置1的分 解立體圖。如第1圖所示，本實施形態的多方向輸入裝置 1具備：設置有複數個固定接點20的框體2、收容於該框 體2內部的可動接點板3、將該可動接點板3固定於框體 2的黏著片4、配置於複數個固定接點20上的感壓導電橡 膠5、以及讓構成後述的操作構件的驅動體8回位到初始 ❹ 位置的回位用彈簧6。另外，多方向輸入裝置1還具備： 接受來自操作者的操作輸入的操作軸7、供該操作軸7插 通的驅動體8;固定在收容有前述構件（對操作軸7及驅動 體8來說爲其一部分）的狀態的框體2上之安裝構件9。此 外，利用框體2和安裝構件9構成外殻。另外，利用操作 軸7和驅動體8構成操作構件。 框體2使用絕緣性的合成樹脂而形成俯視呈大致矩形 的薄型箱狀。在框體2的內部形成有具有大致矩形的收容 部21 (參照第2圖）。在收容部21的底面部中央附近形成 200947489 有大致圓形狀的凹部22。在收容部21的底面部，固定接 點20的一部分呈露出的狀態。另外，在框體2的各側壁 部的內壁中央部分，形成用來保持後述的回位用彈簧6的 臂部6 1 ~6 4的凹部23。再者，在鄰接的側壁部之間的外壁 ，設置用來與後述的安裝構件9的固定部93卡合的卡合 部24。 在此，針對設置於框體2的收容部21的底面部的固 定接點20的構造做說明。第2圖是本實施形態的多方向 @ 輸入裝置1所具備的框體2的俯視圖。第3圖是將設置於 本實施形態的多方向輸入裝置1的框體2的固定接點20 取出的圖。 如第2圖所示，在收容部21的底面部設置：用來檢 測多方向輸入裝置1的方位輸入操作的第一固定接點201 、用來檢測按壓輸入操作的第二固定接點202。第二固定 接點202是構成按鈕開關用的固定接點。第—固定接點 201及第二固定接點202均由具有導電性的金屬板形成。 〇 第一固定接點201在底面部設置有複數個，並分別配 置於收容部21的角部。第一固定接點201由分別設置於 底面部的角部的一對接點構成。構成第一固定接點201的 一對接點’在底面部的角部，沿框體2的周方向排列配置 ，其一部分（端子部）往框體2的外部導出（參照第3圖）。 由於在上述框體2的容易成爲閒置空間的角部設置一對接 點’故能夠有效活用框體2內的空間，而能實現裝置的小 型化。此外’在第2圖中’前述一對接點分別爲：接點 -10- 200947489 201a、201b，接點 201c、20ld，接點 201e、201f，以及接 點 201g 、 201h 〇 另一方面’第二固定接點202設置在收容部21底面 部的中央部分。第二固定接點202由設置於凹部22中央 的中央接點202a和設置於凹部22的周緣部附近的外部接 點202b構成。中央接點202a及外部接點202b的一部分（ 端子部）往框體2的外部導出（參照第3圖）。此外，前述第 Ο —固定接點201及第二固定接點202是例如在製造框體2 時經由嵌入成型而構成的。 第4圖是表示本實施形態的多方向輸入裝置1的等效 電路的圖。此外’在第4圖中，是對應於第3圖中賦予第 一固定接點201及第二固定接點2 02的端子部的符號來表 示。如第4圖所示，在端子部（1)和端子部（2)之間，能透 過由可動接點板3和第二固定接點202所構成的按鈕開關 進行導通。在本實施形態的多方向輸入裝置1，是根據該 ® 按鈕開關的導通狀態的有無來檢測按壓操作。另外，端子 部（3)和端子部（4)之間、端子部（5)和端子部（6)之間、端子 部（7)和端子部（8)之間、端子部（9)和端子部（10)之間，都 能夠透過感壓導電橡膠5進行導通。 返回第1圖，對本多方向輸入裝置1的構件做說明。 . 作爲可動接點的可動接點板3，是由具有導電性的金屬板 材料構成’具有圓形狀。如第1圖所示，可動接點板3具 有：向上突出而形成爲圓頂狀的突出部31、與第二固定接 點202的外部接點202b接觸的基座部32，並配置於收容 200947489 部21的底面部的凹部22。配置在凹部22的基座部32維 持與外部接點202b接觸的狀態。突出部31是與第二固定 接點202的中央接點202a對置，而能按照對操作軸7進 行的按壓操作來形成接觸或分離。 黏著片4由例如聚醯亞胺等材料構成，貼合於凹部22 中配置有可動接點板3的收容部21的底面部。在黏著片4 的中央設置向上突出的突出部41。突出部41具有與可動 接點板3的突出部31對應的形狀，在貼合於收容部21的 © 底面部的狀態下，在其下方配置可動接點板3。 感壓導電橡膠5，具有經由加壓壓縮而使內部電阻減 少的特性，由例如充塡有碳粉的矽酮橡膠構成。感壓導電 橡膠5由一張大致矩形的片材構成。如此般，由於由一張 片材構成感壓導電橡膠5，在感壓導電橡膠的任意部分被 按壓的情況下，均能夠得到統一的特性。另外，在感壓導 電橡膠5的中央部形成有圓形的開口部51。該開口部51 的內徑比可動接點板3的外徑小。另外’感壓導電橡膠5 ◎ 的角部，分別配置於配設在收容部21的底面部的第一固 定接點201上，並分別跨設於構成第一固定接點201的一 對接點 201a、 201b，接點 201c、 201d’ 接點 201e、 201f ’以及接點201g、201h。 回位用彈簧6，由例如磷青銅等金屬材料構成，具有 大致環形狀。在回位用彈簧6，沿周方向隔著既定間隔設 置有四個臂部61〜64。臂部61~64朝多方向輸出裝置1的 側方延伸而設。臂部61〜64的前端收容於設置在框體2的 -12- 200947489 側壁部的凹部23，且被其下面所保持。如此般’臂部 61〜64被凹部23所保持，藉此成爲回位用彈簧6被框體2 所保持的狀態。 操作軸7，是由例如絕緣性的樹脂材料構成’具有大 致圓柱形狀。在操作軸7的下方側端部設有呈凸緣狀突出 的凸緣部71。該凸緣部71，俯視呈大致橢圓形狀’被後 述驅動體8的凹部86收容。在操作軸7的下端部設置有 φ 向下突出的突出部72(第1圖中未圖示’參照第8圖）。該 突出部72，是對應於對操作軸7進行的按壓操作而將可動 接點板3施以按壓的部分。 驅動體8，是由絕緣性合成樹脂材料構成，大致具有 向上突出的圓頂狀。在驅動體8的中央形成有供操作軸7 插通的插通孔81。另外，在驅動體8的下方側端部，設置 有朝多方向輸入裝置1的側方延伸的複數個板狀部82。在 該等板狀部82的下面設置有向下突出的按壓部83(第1圖 〇 中未圖示，參照第5圖）。該等按壓部83，是對應於對操 作軸7進行的傾倒操作而將感壓導電橡膠5施以按壓的部 分。此外，在鄰接的板狀部82之間設置凹部84。設置凹 部84的目的，是爲了防止對操作軸7進行傾倒操作時與 感壓導電橡膠5發生接觸。 在此說明驅動體8的構造。第5圖是用於說明本實施 形態的多方向輸入裝置1所具備的驅動體8的構造。第 5(a)圖、第5(b)圖、第5(c)圖及第5(d)圖分別表示驅動體 8的俯視圖、側視圖、仰視圖及截面圖。此外’在第5 (b) -13- 200947489 圖，顯示從第5(a)圖的左方側觀察的側面；在第5(d)圖， 顯示第5 (a)圖所示的一點鏈線A的截面。 如第5(a)圖〜第5(c)圖所示，板狀部82如後所述，與 收容部21的角部對應地設置在驅動體8的角部，朝多方 向輸入裝置1的側方延伸。並且，在鄰接的板狀部82之 間設置有比板狀部82的外形稍凹向內側的凹部84。另外 ，在前述板狀部82的端部附近，設置大致半球形狀的按 壓部83(參照第5(c)圖）。另外，在板狀部82的下面，在 q 該等按壓部83的內側設置稍向下突出的突出部85。該等 突出部85，是被回位用彈簧6的環形狀部分支承的部分。 在驅動體8的下面的中央部分，形成大致橢圓形狀的凹部 86。藉由在該凹部86收容橢圓形狀的操作軸7的凸緣部 71，而使驅動體8能夠與操作軸7 —體轉動。 返回第1圖’說明多方向輸入裝置1的構件。安裝構 件9，是對金屬板實施衝孔加工和彎曲加工而形成。安裝 構件9具有大致八角形狀的上面部91。在上面部91中央 0 ’形成有讓驅動體8及操作軸7的一部分露出的圓形開口 部92。另外，在上面部91的外緣部的既定位置，設置向 下延伸的複數個固定部93。在該等固定部93形成開口部 ，在該開口部收容框體2的卡合部24。 在此’說明具有上述構造的多方向輸入裝置丨的組裝 狀態。第6圖是表示本實施形態的多方向輸入裝置1的外 觀的立體圖。第7圖是本實施形態的多方向輸入裝置1的 俯視圖。第8圖及第9圖分別是第7圖所示的一點鏈線a -14- 200947489 、3的截面圖。此外，在第8圖及第9圖顯示初始狀態的 多方向輸入裝置1。 如第6圖及第7圖所示，要組裝多方向輸入裝置1時 ，從組裝有可動接點板3、感壓導電橡膠5、回位用彈簧6 、操作軸7及驅動軸8的狀態的框體2的上方側安裝安裝 構件9。在此情況，安裝構件9,其上面部91的下面端部 被框體2的側壁部的上面所支承，並用固定部93的開口 〇 部收容卡合部24,藉此將安裝構件9固定於框體2。另外 ，驅動體8及操作軸7的一部分成爲從安裝構件9的開口 部92露出的狀態。這時，操作軸7被保持成，相對於由 框體2及安裝構件9構成的外殼能夠傾倒且能夠按壓。 如第8圖及第9圖所示，在如此般組裝成的多方向輸 入裝置1的內部，在設置於框體2的收容部21的底面部 的凹部22收容有可動接點板3的狀態下，從其上方側貼 合黏著片4。感壓導電橡膠5,是裝載於收容部21的底面 〇 部的一部分及黏著片4上。在裝載該感壓導電橡膠5的收 容部21的底面部的一部分設置第一固定接點201。藉此， 感壓導電橡膠5成爲配置於第一固定接點201上的狀態。 此外，在本實施形態的多方向輸入裝置1，在感壓導 電橡膠5收容於框體2內的狀態下’可動接點板3外緣部 的一部分配置在與感壓導電橡膠5的開口部5ι附近的— 部分重疊的位置。藉由將可動接點板3和感壓導電橡膠5 重疊配置，相較於未重疊的情況，能夠使裝置的外形小型 化。 -15- 200947489 另外，回位用彈簧6，其臂部61〜64被框體2的凹部 23收容，其端部被凹部23的下面保持。如第9圖所示’ 凹部23設置在比收容部21的底面部高的位置。被凹部23 的下面所保持的回位用彈簧6，相對於配置在其下方的感 壓導電橡膠5，是配置在稍上方的位置。 另一方面，操作軸7插通於驅動體8。操作軸7在插 通於驅動體8的狀態下，其凸緣部71被驅動體8的凹部 86收容，其突出部72裝載於黏著片4上。如此般，插通 @ 有操作軸7的狀態的驅動體8，在設置於其下面的突出部 85，是藉由回位用彈簧6的環形狀部分從下方支承（參照 第8圖）。按壓部83雖是延伸至比回位用彈簧6稍下方， 但在初始狀態，對於感壓導電橡膠5成爲非按壓狀態。 接著說明，本實施形態的多方向輸入裝置1的構件的 位置關係。第1 〇圖~第1 4圖是用於說明本實施形態的多 方向輸入裝置1的構件的位置關係的俯視圖。此外，第10 圖〜第14圖係顯示在第2圖所示的狀態的框體2配置的各 0 構件。 第10圖是在本實施形態的多方向輸入裝置1的框體2 配置可動接點板3的狀態的俯視圖。如第1 〇圖所示，可 動接點板3配置於在框體2的收容部21的圓形凹部22。 在配置於凹部22的狀態下，其基座部32的端部配置在與 第二固定接點202的外部接點202b對應的位置。 第11圖是在第10圖所示狀態的框體2的收容部21 貼合黏著片4的狀態的俯視圖。如第n圖所示，黏著片4 -16- 200947489 貼合在收容部 21的底面部之未設置第一固定接點 20 la〜20 lh的部分。在此情況，黏著片4是以在其突出部 41的下方側配置可動接點板3的方式貼合在收容部21的 底面部。藉此，將可動接點板3收容在凹部22內。 第12圖是在第11圖所示狀態的框體2的收容部21 配置感壓導電橡膠5的狀態的俯視圖。如第12圖所示， 感壓導電橡膠5遍及收容部21的底面部的大致整個區域 ❹ 而配置。而且，其角部覆蓋第一固定接點201a〜201h而配 置，且橫跨構成第一固定接點201的一對接點而配置。在 此情況是配置成，使黏著片4的突出部41面對感壓導電 橡膠5的開口部5 1。 第13圖是在第12圖所示狀態的框體2配置回位用彈 簧6的狀態的俯視圖。如第13圖所示，回位用彈簧6，是 利用其臂部61〜64而被保持在框體2的凹部23。如上述般 ，凹部23是設置於框體2的各側壁部的內壁的中央部分 © 。因此，回位用彈簧6配置成’其臂部61〜64在分別設置 於收容部21的角部的第一固定接點201的接點201a和接 點201h之間、接點201f和接點201g之間、接點201d和 接點2 0 1 e之間以及接點2 0 1 b和接點2 0 1 c之間的位置， 從環狀部分向外側延伸（參照第11圖）。在此情況是配置成 ’使黏著片4的突出部41面對回位用彈簧6的環狀部分 的內側。此外’本實施形態的回位用彈簧6的環狀部分並 不是完全的圓環形狀，但也可以使用在第13圖中以斜線 表示的圓環形狀的與本實施形態不同的回位用彈簧。在第 -17- 200947489 13圖’爲了方便後述的說明，重疊顯示出具備與感壓導電 橡膠5的圓形開口部51呈同心圓狀的圓環形狀部的回位 用彈簧。 第14圖是在第13圖所示狀態的框體2配置插通有操 作軸7的驅動體8的狀態的俯視圖。如第14圖所示，驅 動體8的板狀部82與收容部21的角部對應，並且，其凹 部84配置在與回位用彈簧6的臂部61〜64對應的位置。 如上述般，在板狀部82的下面的端部附近，設置按壓部 83(參照第5(c)圖）。如此般將驅動體8配置於收容部21的 狀態下，前述按壓部83配置於與設置在收容部21的角部 的第一固定接點201 a〜201h對應的位置。 如此般，在本實施形態的多方向輸入裝置1，使驅動 體8的按壓部83在與第一固定接點201 a~2 01h對應的位 置往感壓導電橡膠5側突出，因此能確實按壓感壓導電橡 膠5之與第一固定接點201 a~2 01h對應的部分，藉此能有 效改變第一固定接點201a〜201h的電阻値。 另外，在本實施形態的多方向輸入裝置1，回位用彈 簧6在不與驅動體8的按壓部83接觸的位置，利用複數 個臂部61~64來被框體2所保持，因此能在避免與回位用 彈簧6發生接觸的狀態下，利用按壓部83直接按壓感壓 導電橡膠5，因此能夠得到準確的類比輸出。 此外，插通於驅動體8的操作軸7，是配置在第13圖 所示的黏著片4的突出部41上。如上述般，在黏著片4 的突出部41的下方配置有可動接點板3，因此，操作軸7 -18- 200947489 是配置在可動接點板3的上方。如此般，在本實施形態的 多方向輸入裝置1，成爲在回位用彈簧6的上方配置驅動 體8(插通有操作軸7)的狀態。 接著，說明對本實施形態的多方向輸入裝置1進行傾 倒操作的狀態。第15圖是對本實施形態的多方向輸入裝 置1進行傾倒操作的狀態的截面圖。作爲傾倒操作時的座 標軸，以第7圖所示的一點鏈線A爲Y軸，以與其正交 〇 的軸爲X軸。此外，在第15圖中，顯示與第8圖對應的 截面，並顯示往該圖的左方側進行傾倒輸入操作的情況。 若使操作軸7從第8圖所示的狀態往左方側傾倒時， 如第15圖所示，驅動體8與操作軸7 —起往左方側傾倒 。對應於此，設置於驅動體8的板狀部82的下面的按壓 部83會按壓感壓導電橡膠5，使其局部變形。當如此般地 受到按壓部83的按壓時，感壓導電橡膠5的該部分的內 部電阻減少。藉此，配置於該部分的下方的第一固定接點 φ 201的一對接點201g、201h之間（第4圖所示的端子部（9) 和端子部（10)之間）的電阻値減少。在本實施形態的多方向 輸入裝置1，能夠根據該一對接點201g、201h間的電阻値 的減少來檢測傾倒操作的方位。另外，回位用彈簧6的各 臂部之間的弧狀部分，相較於第13圖中以斜線表示的圓 環狀部分，是在內側將各臂部做圓弧狀連結。因此，由於 被突出部8 5按壓的部分位於內側，相較於採用以斜線表 示的圓環狀部分的構造，利用較輕的荷重即可傾倒，故操 作性良好。 -19- 200947489 如此般，根據本實施形態的多方向輸入裝置1，讓操 作構件（操作軸7及驅動體8)回位到初始位置的回位用彈 簧6，是配置在感壓導電橡膠5和操作構件（操作軸7及驅 動體8)之間，將操作構件（操作軸7及驅動體8)彈壓而使 其遠離感壓導電橡膠5，因此，受到回位用彈簧6的彈壓 力的作用，感壓導電橡膠5不易被操作構件（操作軸7及 驅動體8)按壓。藉此，在操作構件（操作軸7及驅動體8) 處於初始位置的情況下，一對接點間的電阻値不易變化， 因此能夠確保伴隨操作構件（操作軸7及驅動體8)的傾倒 所產生的電阻値變化量而獲得期望輸出。 特別是，在本實施形態的多方向輸入裝置1，藉由回 位用彈簧6，在初始位置，是將操作構件（操作軸7及驅動 體8)彈壓而使其對於感壓導電橡膠5成爲非按壓狀態。藉 此能確實防止處於初始位置時，感壓導電橡膠5被操作構 件（操作軸7及驅動體8)按壓的事態，而能確實地防止一 對接點間的電阻値變化的事態。藉此，能夠確保伴隨操作 構件（操作軸7及驅動體8)的傾倒所產生的電阻値變化量 而確實地獲得期望輸出。 另外，在本實施形態的多方向輸入裝置1，是由一張 片材構成受按壓部83按壓的感壓導電橡膠5，即使在感壓 導電橡膠5的任意部分被按壓的情況下，也能夠得到統一 的特性。 此外，本發明並不限定於上述實施形態，可以進行各 種變更。在上述實施形態中，關於在附圖顯示的大小、形 -20- 200947489 狀、接點的配置和數量等，並不是限定於此’在能發揮本 發明效果的範圍內可進行適當變更。此外，可以在不脫離 本發明目的的範圍內進行適當的變更。 例如，在上述實施形態雖是說明：對應於傾倒操作而 按壓感壓導電橡膠5的操作構件，是由操作軸7及驅動體 8兩個零件構成的情況。但按壓感壓導電橡膠5的操作構 件的構造並非限定於此，可以進行適當變更。例如，可以 φ 利用將上述實施形態中的操作軸7及驅動體8 —體化的構 件來構成操作構件。也可以不具有中心按鈕開關，在此情 況’回位用彈簧可以不是環狀，而是無孔的面狀。即使在 如此般地變更操作構件的構造的情況下，也能夠得到與上 述實施形態相同的效果。 【圖式簡單說明】 桌1圖是本發明一實施形態的多方向輸入裝置的分解 ❹ 立體圖。 第2圖是上述實施形態的多方向輸入裝置所具備的框 體的俯視圖。 第3圖是將在上述實施形態的多方向輸入裝置的框體 設置的固定接點取出的圖。 第4圖是表示上述實施形態的多方向輸入裝置的等效 電路的圖。 第5(a)〜（d)圖是用於說明上述實施形態的多方向輸入 裝置所具備的驅動體的構造的圖。 -21 - 200947489 第6圖是表示上述實施形態的多方向輸入裝置的外觀 的立體圖。 第7圖是上述實施形態的多方向輸入裝置的俯視圖。 第8圖是第7圖所示的一點鏈線A的截面圖。 第9圖是第7圖所示的一點鏈線B的截面圖。 第10圖是用於說明上述實施形態的多方向輸入裝置 的構件的位置關係的俯視圖。 第11圖是用於說明上述實施形態的多方向輸入裝置 _ 的構件的位置關係的俯視圖。 第12圖是用於說明上述實施形態的多方向輸入裝置 的構件的位置關係的俯視圖。 第13圖是用於說明上述實施形態的多方向輸入裝置 的構件的位置關係的俯視圖。 第14圖是用於說明上述實施形態的多方向輸入裝置 的構件的位置關係的俯視圖。 第15圖是對上述實施形態的多方向輸入裝置進行傾 倒輸入操作的情況的截面圖。 【主要元件符號說明】 1 :多方向輸入裝置 2 :框體 2〇 :固定接點 201 :第一固定接點 201a〜201h :接點 -22- 200947489 202:第二固定接點 202a :中央接點 202b :外部接點 2 1 :收容部 22 :凹部 23 :凹部 24 :卡合部 〇 3 :可動接點板 3 1 :突出部 32 :基座部 4 ‘·黏著片 41 :突出部 5 :感壓導電橡膠 51 :開口部 6 :回位用彈簧 ® 61〜64 :臂部 7 :操作軸 71 :凸緣部 72 :突出部 8 :驅動體 81 :插通孔 82 :板狀部 83 :按壓部 84 :凹部 -23 200947489 85 :突出部 86 :凹部 9 :安裝構件 9 1 :上面部 92 :開口部 93 :固定部BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multidirectional input device, and more particularly to a multidirectional input device suitable for azimuth input operation of a mobile telephone device and a game machine controller. [Prior Art] Conventionally, a multi-directional input device for detecting an azimuth input operation by changing the internal resistance of a pressure-sensitive conductive rubber (see, for example, Patent Document 1) has been proposed. In the multi-directional input device, four sets of contact electrodes (each composed of a pair of electrodes) are formed on the substrate at intervals of 90°, and a pressure-sensitive conductive rubber is disposed on each of the contact electrodes. The top of the key that is dumped by the pouring operation presses the pressure-sensitive conductive rubber in the pouring direction. Further, as the internal resistance of the pressure-sensitive conductive rubber corresponding to the pressing is reduced, the resistance 一对 between the pair of electrodes of the contact electrode is reduced, and this phenomenon is used to detect the azimuth input operation. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-278695. SUMMARY OF THE INVENTION However, in the above-described conventional multi-directional input device, the top of the key is always biased in the direction of pressing the pressure-sensitive conductive rubber by the leaf spring, so even in the initial state, the electric sister between the pair of electrodes Will also decrease. As a result, the amount of change in resistance 产生 caused by the tipping of the top of the key is reduced, and there is a problem that the desired output cannot be obtained. The present invention has been made in view of the above problems, and an object thereof is to provide a multi-directional input device capable of securing a desired output with a change in resistance 値 caused by tilting of an operating member. The multi-directional input device of the present invention includes an operation member provided with a pressing portion, and a housing that accommodates the pressing portion and holds the operation member in a state in which a part of the operation member is exposed, and is placed in a plurality of directions. a return spring that returns the operation member to the initial position in the casing, and a fixed contact that is formed by arranging a plurality of pairs of contact points at a predetermined interval on the inner bottom surface of the casing, and is opposed to the fixed contact a pressure-sensitive conductive rubber; a multi-directional input device that presses the pressure-sensitive conductive rubber with the pressing portion to change a resistance between a pair of contacts of the fixed contact, in association with the tilting of the operating member; The return spring is disposed between the pressure-sensitive conductive rubber and the operation member, and the operation member is biased to be apart from the pressure-sensitive conductive rubber. According to the multi-directional input device described above, the return spring is disposed between the pressure-sensitive conductive rubber and the operating member, and the operating member is biased to be away from the pressure-sensitive conductive rubber, and therefore, the spring of the return spring is received. The pressure acts to make the pressure-sensitive conductive rubber less likely to be pressed by the operating member. As described above, when the operating member is at the initial position, the resistance 一对 between the pair of contacts does not easily change, so that the amount of change in the resistance 伴随 due to the tilting of the operating member can be secured to obtain the desired output. Preferably, in the multi-directional input device, the return spring biases the operating member at an initial position to bring the pressure-sensitive conductive rubber into a non-pressed state. In this case, it is possible to surely prevent the state in which the pressure-sensitive conductive rubber is pressed by the operating member when the initial position is -6-200947489, thereby suppressing the change in the resistance 一对 between the pair of contacts. In this way, the amount of change in resistance 产生 due to the tilting of the operating member can be surely output. Further, in the multi-directional input device, it is preferable that the pressing portion protrudes on a pressure-sensitive conductive rubber side corresponding to a pair of contacts of the fixed contact. In this case, the pressing portion protrudes toward the pressure-sensitive conductive rubber side at the position corresponding to Φ, so that the portion of the conductive rubber corresponding to the pair of fixed contacts can be surely obtained, whereby the resistance 一对 between the pair of contacts. Further, in the multi-directional input device, it is preferable that the multi-directional input device is configured by a leaf spring and is provided at a predetermined interval in a circumferential direction thereof, and the plurality of arm portions are held by the outer casing at a position not opposed to the operation member. . In this case, the return position is held by the plurality of arms and is not held by the pressing portion of the operating member. Therefore, the pressure-sensitive conductive rubber can be directly pressed while avoiding the pressing portion that is in contact with the return spring. Better than the output. In this case, it is preferable that the return spring has a ring-shaped portion extending outward from the plurality of arm portions, and the pressing portion is disposed between the adjacent portions. According to the above configuration, the pressing portion is disposed between the adjacent arm portions of the spring, which hinders the pressing operation of the pressing portion, and the return spring can accommodate the operability of the multi-directional input device. It can be surely prevented that the position at which the desired operating member is obtained is accompanied by pressing the pressure sensitive force against the pair of contacts. The spring can be effectively changed. The plurality of arm pressing portions are in contact with the spring by the position of the outer casing. In the case of the accurate type, the arm is not easily deformed due to the return of the arm, and the multi-directional input device preferably has the outer casing viewed in a substantially rectangular shape at its corner. In the case where the pair of contacts β are arranged in the circumferential direction, a pair of contacts are provided at the corners of the casing which are likely to be an empty space, so that the space inside the casing can be effectively utilized and the size of the device can be reduced. For example, in the multidirectional input device, it is preferable that the pressure-sensitive conductive rubber ' is a plate-like member that is locally deformed by pressing of a pressing portion of the operation member. In this case, since the pressure-sensitive conductive rubber constituting a plate-like member is pressed at any portion of the pressure-sensitive conductive rubber, uniform characteristics can be obtained. Further, the multi-directional input device may include a fixed contact formed by a pair of contacts for a push button switch disposed on an inner bottom surface of the outer casing, and a push switch for the operation member and the push button switch a dome-shaped movable contact that is in contact with a pair of contacts; wherein the pressure-sensitive conductive rubber is provided with an opening having an inner diameter smaller than an outer diameter of the dome-shaped movable contact, and an outer edge portion of the movable contact is provided A part of the pressure-sensitive conductive rubber is overlapped with a part of the vicinity of the opening of the pressure-sensitive conductive rubber. In this case, since a part of the outer edge portion of the movable contact is overlapped with a part of the vicinity of the opening of the pressure-sensitive conductive rubber, the outer shape of the apparatus can be reduced as compared with the case of not overlapping. According to the present invention, since the return spring for returning the operating member to the initial position is disposed between the pressure-sensitive conductive rubber and the operating member, the operating member is bounced away from the pressure-sensitive conductive rubber. The elastic pressure of the spring makes the pressure-sensitive conductive rubber less likely to be pressed by the operating member. Thus, in the case where the operating member is at the initial position, the resistance 値 between the pair of fixed contacts -8 - 200947489 is not easily changed, so that it is possible to secure a desired output with the amount of change in resistance 产生 caused by the tilting of the operating member. [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The multidirectional input device of the present embodiment is, for example, an azimuth input operation and a press input operation used for a mobile phone device and a game machine controller. Further, the use of the multidirectional input device of the present embodiment is not limited thereto, and can be appropriately changed. Fig. 1 is an exploded perspective view of a multidirectional input device 1 according to an embodiment of the present invention. As shown in Fig. 1, the multi-directional input device 1 of the present embodiment includes a housing 2 provided with a plurality of fixed contacts 20, a movable contact plate 3 housed inside the housing 2, and the movable contact. The pressure-sensitive adhesive sheet 4 fixed to the frame 2, the pressure-sensitive conductive rubber 5 disposed on the plurality of fixed contacts 20, and the return spring for returning the driving body 8 constituting the operation member described later to the initial ❹ position 6. Further, the multi-directional input device 1 further includes an operation shaft 7 that receives an operation input from the operator, a drive body 8 through which the operation shaft 7 is inserted, and a member that is fixed to accommodate the operation member 7 (the operation shaft 7 and the drive body 8). The mounting member 9 on the casing 2 in the state of being a part thereof. Further, the casing 2 and the mounting member 9 constitute an outer casing. Further, the operating member 7 and the driving body 8 constitute an operating member. The frame 2 is formed into a thin box shape having a substantially rectangular shape in plan view using an insulating synthetic resin. A housing portion 21 having a substantially rectangular shape is formed inside the housing 2 (see Fig. 2). A concave portion 22 having a substantially circular shape in 200947489 is formed in the vicinity of the center of the bottom surface portion of the accommodating portion 21. A part of the fixed contact 20 is exposed in the bottom surface portion of the accommodating portion 21. Further, in the central portion of the inner wall of each side wall portion of the casing 2, a recess portion 23 for holding the arm portions 6 1 to 6 4 of the return spring 6 to be described later is formed. Further, an engaging portion 24 for engaging with the fixing portion 93 of the mounting member 9 to be described later is provided on the outer wall between the adjacent side wall portions. Here, the structure of the fixed contact 20 provided on the bottom surface portion of the accommodating portion 21 of the casing 2 will be described. Fig. 2 is a plan view of the casing 2 included in the multidirectional @ input device 1 of the embodiment. Fig. 3 is a view showing the fixed contact 20 of the casing 2 provided in the multidirectional input device 1 of the embodiment. As shown in Fig. 2, a first fixed contact 201 for detecting an azimuth input operation of the multidirectional input device 1 and a second fixed contact 202 for detecting a press input operation are provided on the bottom surface portion of the accommodating portion 21. The second fixed contact 202 is a fixed contact that constitutes a push button switch. The first fixed contact 201 and the second fixed contact 202 are each formed of a conductive metal plate. 〇 The first fixed contact 201 is provided in plural at the bottom surface portion, and is disposed at a corner portion of the accommodating portion 21, respectively. The first fixed contact 201 is constituted by a pair of contacts respectively provided at corner portions of the bottom surface portion. The pair of contacts constituting the first fixed contact 201 are arranged at the corners of the bottom surface portion in the circumferential direction of the casing 2, and a part (terminal portion) is led out to the outside of the casing 2 (see Fig. 3). Since a pair of contacts are provided at the corners of the casing 2 which are likely to be an empty space, the space in the casing 2 can be effectively utilized, and the size of the apparatus can be reduced. Further, 'in the second figure', the aforementioned pair of contacts are: contacts-10-200947489 201a, 201b, contacts 201c, 20ld, contacts 201e, 201f, and contacts 201g, 201h, and on the other hand, 'second The fixed contact 202 is provided at a central portion of the bottom surface portion of the housing portion 21. The second fixed contact 202 is composed of a central contact 202a provided at the center of the recess 22 and an external contact 202b provided near the peripheral portion of the recess 22. A part (terminal portion) of the center contact 202a and the external contact 202b is led to the outside of the casing 2 (see Fig. 3). Further, the aforementioned first and second fixed contacts 201 and 202 are formed by insert molding, for example, when the frame 2 is manufactured. Fig. 4 is a view showing an equivalent circuit of the multidirectional input device 1 of the embodiment. Further, in Fig. 4, the symbol corresponding to the terminal portion to which the first fixed contact 201 and the second fixed contact 202 are given in Fig. 3 is indicated. As shown in Fig. 4, between the terminal portion (1) and the terminal portion (2), conduction can be performed by a push button switch composed of the movable contact plate 3 and the second fixed contact 202. In the multidirectional input device 1 of the present embodiment, the pressing operation is detected based on the presence or absence of the conduction state of the ® button switch. Further, between the terminal portion (3) and the terminal portion (4), between the terminal portion (5) and the terminal portion (6), between the terminal portion (7) and the terminal portion (8), and between the terminal portion (9) and The terminal portion (10) can be electrically connected to each other through the pressure-sensitive conductive rubber 5. Returning to Fig. 1, the components of the multidirectional input device 1 will be described. The movable contact plate 3 as a movable contact is made of a conductive metal plate material and has a circular shape. As shown in Fig. 1, the movable contact plate 3 has a protruding portion 31 that is formed to protrude in a dome shape and a base portion 32 that is in contact with the external contact 202b of the second fixed contact 202, and is disposed in the housing portion 32. 200947489 The recess 22 of the bottom portion of the portion 21. The base portion 32 of the recess 22 is placed in contact with the external contact 202b. The protruding portion 31 is opposed to the central contact 202a of the second fixed contact 202, and can be brought into contact or separated in accordance with a pressing operation on the operating shaft 7. The adhesive sheet 4 is made of a material such as polyimide, and is bonded to the bottom surface portion of the recessed portion 22 in which the accommodating portion 21 of the movable contact plate 3 is disposed. A protruding portion 41 that protrudes upward is provided in the center of the adhesive sheet 4. The protruding portion 41 has a shape corresponding to the protruding portion 31 of the movable contact plate 3, and the movable contact plate 3 is disposed under the state in which the bottom portion of the accommodating portion 21 is attached to the bottom surface portion of the accommodating portion 21. The pressure-sensitive conductive rubber 5 has a characteristic of reducing internal resistance by pressure compression, and is composed of, for example, an anthrone rubber filled with carbon powder. The pressure-sensitive conductive rubber 5 is composed of a substantially rectangular sheet. In this manner, when the pressure-sensitive conductive rubber 5 is composed of a single sheet, uniform characteristics can be obtained when any portion of the pressure-sensitive conductive rubber is pressed. Further, a circular opening portion 51 is formed in the central portion of the pressure-sensitive conductive rubber 5. The inner diameter of the opening portion 51 is smaller than the outer diameter of the movable contact plate 3. Further, the corner portions of the 'pressure-sensitive conductive rubber 5 ◎ are respectively disposed on the first fixed contact 201 disposed on the bottom surface portion of the accommodating portion 21, and are respectively spanned over the pair of contacts 201a constituting the first fixed contact 201. 201b, contacts 201c, 201d' contacts 201e, 201f' and contacts 201g, 201h. The return spring 6 is made of a metal material such as phosphor bronze and has a substantially ring shape. In the return spring 6, four arm portions 61 to 64 are provided at predetermined intervals in the circumferential direction. The arms 61 to 64 are provided to extend laterally of the multidirectional output device 1. The front ends of the arms 61 to 64 are housed in the recess 23 provided in the side wall portion of the frame -12-200947489, and are held by the lower surface thereof. In this way, the arm portions 61 to 64 are held by the concave portion 23, whereby the return spring 6 is held by the casing 2. The operation shaft 7 is made of, for example, an insulating resin material and has a substantially cylindrical shape. A flange portion 71 that protrudes in a flange shape is provided at a lower end portion of the operation shaft 7. The flange portion 71 is substantially elliptical in plan view and is housed in a recess 86 of the driving body 8 to be described later. At the lower end portion of the operation shaft 7, a projecting portion 72 (which is not shown in the first drawing) which protrudes downward is referred to (see Fig. 8). The protruding portion 72 is a portion that presses the movable contact plate 3 in response to a pressing operation on the operation shaft 7. The driving body 8 is made of an insulating synthetic resin material and has a substantially dome shape that protrudes upward. An insertion hole 81 through which the operation shaft 7 is inserted is formed in the center of the driving body 8. Further, a plurality of plate-like portions 82 extending to the side of the multi-directional input device 1 are provided at the lower end portion of the driving body 8. A pressing portion 83 that protrudes downward is provided on the lower surface of the plate-like portion 82 (not shown in Fig. 1 and referred to Fig. 5). These pressing portions 83 are portions for pressing the pressure-sensitive conductive rubber 5 in accordance with the tilting operation performed on the operating shaft 7. Further, a concave portion 84 is provided between the adjacent plate-like portions 82. The purpose of providing the concave portion 84 is to prevent contact with the pressure-sensitive conductive rubber 5 when the operation shaft 7 is tilted. The configuration of the drive body 8 will be described here. Fig. 5 is a view for explaining the structure of the driving body 8 provided in the multidirectional input device 1 of the present embodiment. The fifth (a), fifth (b), fifth (c), and fifth (d) drawings show a plan view, a side view, a bottom view, and a cross-sectional view of the driving body 8, respectively. In addition, in the 5th (b) -13-200947489 diagram, the side viewed from the left side of the 5th (a) diagram is shown; in the 5th (d) diagram, the point chain shown in the 5th (a) diagram is displayed. The section of line A. As shown in the fifth (a) to fifth (c), the plate-like portion 82 is provided at a corner portion of the driving body 8 corresponding to the corner portion of the accommodating portion 21 as will be described later, and the device 1 is input in a multi-directional direction. The lateral extension. Further, a concave portion 84 slightly inward of the outer shape of the plate-like portion 82 is provided between the adjacent plate-like portions 82. Further, a pressing portion 83 having a substantially hemispherical shape is provided in the vicinity of the end portion of the plate-like portion 82 (see Fig. 5(c)). Further, on the lower surface of the plate-like portion 82, a protruding portion 85 that protrudes slightly downward is provided inside the pressing portions 83. These protruding portions 85 are portions that are supported by the ring-shaped portion of the return spring 6. A concave portion 86 having a substantially elliptical shape is formed at a central portion of the lower surface of the driving body 8. By accommodating the flange portion 71 of the elliptical operating shaft 7 in the recess 86, the driving body 8 can be rotated integrally with the operating shaft 7. Returning to Fig. 1 ', the components of the multidirectional input device 1 will be described. The mounting member 9 is formed by punching and bending a metal plate. The mounting member 9 has an upper face portion 91 of a substantially octagonal shape. A circular opening portion 92 for exposing a part of the driving body 8 and the operating shaft 7 is formed at the center 0' of the upper surface portion 91. Further, a plurality of fixing portions 93 extending downward are provided at predetermined positions of the outer edge portion of the upper surface portion 91. An opening is formed in the fixing portion 93, and the engaging portion 24 of the casing 2 is housed in the opening. Here, the assembled state of the multidirectional input device 具有 having the above configuration will be described. Fig. 6 is a perspective view showing the appearance of the multidirectional input device 1 of the embodiment. Fig. 7 is a plan view of the multidirectional input device 1 of the embodiment. Fig. 8 and Fig. 9 are cross-sectional views of the one-point chain lines a - 14 - 200947489 and 3 shown in Fig. 7, respectively. Further, the multidirectional input device 1 in the initial state is shown in Figs. 8 and 9. As shown in FIGS. 6 and 7, when the multi-directional input device 1 is to be assembled, the movable contact plate 3, the pressure-sensitive conductive rubber 5, the return spring 6, the operating shaft 7, and the drive shaft 8 are assembled. The mounting member 9 is attached to the upper side of the casing 2. In this case, the mounting member 9 has the lower end portion of the upper surface portion 91 supported by the upper surface of the side wall portion of the frame body 2, and the engaging portion 24 is received by the opening crotch portion of the fixing portion 93, whereby the mounting member 9 is fixed to Frame 2. Further, a part of the driving body 8 and the operation shaft 7 is exposed from the opening portion 92 of the mounting member 9. At this time, the operation shaft 7 is held so as to be tiltable and pressable with respect to the outer casing composed of the frame 2 and the attachment member 9. As shown in FIGS. 8 and 9 , in the multi-directional input device 1 assembled as described above, the movable contact plate 3 is housed in the recess 22 provided in the bottom surface portion of the housing portion 21 of the housing 2 . Next, the adhesive sheet 4 is attached from the upper side thereof. The pressure-sensitive conductive rubber 5 is mounted on a part of the bottom surface of the accommodating portion 21 and the adhesive sheet 4. The first fixed contact 201 is provided in a part of the bottom surface portion of the accommodation portion 21 on which the pressure-sensitive conductive rubber 5 is mounted. Thereby, the pressure-sensitive conductive rubber 5 is placed on the first fixed contact 201. Further, in the multi-directional input device 1 of the present embodiment, in a state in which the pressure-sensitive conductive rubber 5 is housed in the casing 2, a part of the outer edge portion of the movable contact plate 3 is disposed in the opening portion of the pressure-sensitive conductive rubber 5. Near 5ι — a partially overlapping position. By overlapping the movable contact plate 3 and the pressure-sensitive conductive rubber 5, the outer shape of the apparatus can be reduced as compared with the case where the movable contact rubber 5 is not overlapped. -15- 200947489 In addition, the return spring 6 has its arm portions 61 to 64 housed in the recessed portion 23 of the casing 2, and its end portion is held by the lower surface of the recessed portion 23. As shown in Fig. 9, the recessed portion 23 is provided at a position higher than the bottom surface portion of the accommodating portion 21. The return spring 6 held by the lower surface of the recessed portion 23 is disposed at a position slightly above the pressure-sensitive conductive rubber 5 disposed below it. On the other hand, the operating shaft 7 is inserted into the driving body 8. In a state where the operation shaft 7 is inserted into the driving body 8, the flange portion 71 is received by the concave portion 86 of the driving body 8, and the protruding portion 72 is placed on the adhesive sheet 4. In the same manner, the driving body 8 having the state in which the shaft 7 is operated is supported by the ring-shaped portion of the return spring 6 from below (see Fig. 8). The pressing portion 83 extends slightly below the return spring 6, but in the initial state, the pressure-sensitive conductive rubber 5 is in a non-pressed state. Next, the positional relationship of the members of the multidirectional input device 1 of the present embodiment will be described. The first to fourth figures are plan views for explaining the positional relationship of members of the multidirectional input device 1 of the present embodiment. Further, the tenth to fourteenth drawings show the respective 0 members arranged in the casing 2 in the state shown in Fig. 2 . Fig. 10 is a plan view showing a state in which the movable contact plate 3 is placed in the casing 2 of the multidirectional input device 1 of the present embodiment. As shown in Fig. 1, the movable contact plate 3 is disposed in the circular recess 22 of the housing portion 21 of the casing 2. In the state of being disposed in the recess 22, the end portion of the base portion 32 is disposed at a position corresponding to the external contact 202b of the second fixed contact 202. Fig. 11 is a plan view showing a state in which the adhesive sheet 4 is bonded to the accommodating portion 21 of the casing 2 in the state shown in Fig. 10. As shown in Fig. n, the adhesive sheet 4-16-200947489 is attached to the portion of the bottom surface portion of the housing portion 21 where the first fixed contact 20 la to 20 lh is not provided. In this case, the adhesive sheet 4 is attached to the bottom surface portion of the accommodating portion 21 so that the movable contact plate 3 is disposed on the lower side of the protruding portion 41. Thereby, the movable contact plate 3 is housed in the recess 22. Fig. 12 is a plan view showing a state in which the pressure-sensitive conductive rubber 5 is placed in the accommodating portion 21 of the casing 2 in the state shown in Fig. 11. As shown in Fig. 12, the pressure-sensitive conductive rubber 5 is disposed over substantially the entire area of the bottom surface portion of the accommodating portion 21. Further, the corner portions are disposed so as to cover the first fixed contacts 201a to 201h, and are disposed across a pair of contacts constituting the first fixed contact 201. In this case, the projection 41 of the adhesive sheet 4 faces the opening portion 51 of the pressure-sensitive conductive rubber 5. Fig. 13 is a plan view showing a state in which the return spring 6 is placed in the casing 2 in the state shown in Fig. 12. As shown in Fig. 13, the return spring 6 is held in the recess 23 of the casing 2 by the arm portions 61 to 64. As described above, the concave portion 23 is a central portion of the inner wall of each side wall portion of the casing 2. Therefore, the return spring 6 is disposed such that 'the arm portions 61 to 64 are disposed between the contact 201a and the contact 201h of the first fixed contact 201 respectively provided at the corner portion of the accommodating portion 21, the contact 201f and the contact point A position between 201g, between the contact 201d and the contact 2 0 1 e, and between the contact 2 0 1 b and the contact 2 0 1 c extends outward from the annular portion (refer to Fig. 11). In this case, it is disposed such that the protruding portion 41 of the adhesive sheet 4 faces the inner side of the annular portion of the return spring 6. Further, the annular portion of the return spring 6 of the present embodiment is not a completely annular shape, but a return spring different from the present embodiment which is annularly indicated by a hatched line in Fig. 13 may be used. . In the drawings -17-200947489, the return springs having the annular portion which is concentric with the circular opening 51 of the pressure-sensitive conductive rubber 5 are superimposed and displayed for the convenience of the following description. Fig. 14 is a plan view showing a state in which the driving body 8 in which the operation shaft 7 is inserted is disposed in the casing 2 in the state shown in Fig. 13. As shown in Fig. 14, the plate-like portion 82 of the driving body 8 corresponds to the corner portion of the accommodating portion 21, and the concave portion 84 is disposed at a position corresponding to the arm portions 61 to 64 of the return spring 6. As described above, the pressing portion 83 is provided in the vicinity of the lower end portion of the plate-like portion 82 (see Fig. 5(c)). In the state where the driving body 8 is disposed in the accommodating portion 21, the pressing portion 83 is disposed at a position corresponding to the first fixed contacts 201a to 201h provided at the corner portions of the accommodating portion 21. In the multi-directional input device 1 of the present embodiment, the pressing portion 83 of the driving body 8 protrudes toward the pressure-sensitive conductive rubber 5 at a position corresponding to the first fixed contact 201a to 201h, so that the pressing portion 83 can be surely pressed. The portion of the pressure-sensitive conductive rubber 5 corresponding to the first fixed contacts 201 a to 2 01h can thereby effectively change the resistance 第一 of the first fixed contacts 201a to 201h. Further, in the multi-directional input device 1 of the present embodiment, the return spring 6 is held by the housing 2 by a plurality of arm portions 61 to 64 at a position that does not come into contact with the pressing portion 83 of the driving body 8, and therefore When the contact with the return spring 6 is avoided, the pressure-sensitive conductive rubber 5 is directly pressed by the pressing portion 83, so that an accurate analog output can be obtained. Further, the operation shaft 7 inserted through the driving body 8 is disposed on the protruding portion 41 of the adhesive sheet 4 shown in Fig. 13. As described above, the movable contact plate 3 is disposed below the protruding portion 41 of the adhesive sheet 4, and therefore, the operation shafts 7-18 to 200947489 are disposed above the movable contact plate 3. In the multi-directional input device 1 of the present embodiment, the drive body 8 is placed above the return spring 6 (the operation shaft 7 is inserted). Next, a state in which the multi-directional input device 1 of the present embodiment is tilted will be described. Fig. 15 is a cross-sectional view showing a state in which the multi-directional input device 1 of the embodiment is tilted. As the coordinate axis at the time of the tilting operation, the one-point chain line A shown in Fig. 7 is the Y-axis, and the axis orthogonal thereto is the X-axis. Further, in Fig. 15, a cross section corresponding to Fig. 8 is displayed, and a case where the dump input operation is performed to the left side of the figure is shown. When the operation shaft 7 is tilted to the left side from the state shown in Fig. 8, as shown in Fig. 15, the drive body 8 and the operation shaft 7 are tilted to the left side. In response to this, the pressing portion 83 provided on the lower surface of the plate-like portion 82 of the driving body 8 presses the pressure-sensitive conductive rubber 5 to be locally deformed. When pressed by the pressing portion 83 in this manner, the internal resistance of the portion of the pressure-sensitive conductive rubber 5 is reduced. Thereby, the resistance 値 between the pair of contacts 201g and 201h of the first fixed contact φ 201 disposed under the portion (between the terminal portion (9) and the terminal portion (10) shown in FIG. 4) cut back. In the multidirectional input device 1 of the present embodiment, the orientation of the tilting operation can be detected based on the decrease in the resistance 値 between the pair of contacts 201g and 201h. Further, the arc-shaped portion between the arm portions of the return spring 6 is connected to each other in an arc shape on the inner side with respect to the circular portion indicated by oblique lines in Fig. 13 . Therefore, since the portion pressed by the protruding portion 85 is located on the inner side, compared with the structure in which the annular portion indicated by oblique lines is used, the light load can be poured, so that the operability is good. In the multi-directional input device 1 of the present embodiment, the returning spring 6 that returns the operating member (the operating shaft 7 and the driving body 8) to the initial position is disposed in the pressure-sensitive conductive rubber 5 Between the operating member (the operating shaft 7 and the driving body 8), the operating member (the operating shaft 7 and the driving body 8) is biased away from the pressure-sensitive conductive rubber 5, and therefore, the spring pressure of the return spring 6 is received. The pressure-sensitive conductive rubber 5 is not easily pressed by the operating member (the operating shaft 7 and the driving body 8). Thereby, when the operating member (the operating shaft 7 and the driving body 8) is at the initial position, the resistance 値 between the pair of contacts does not easily change, so that the tilting of the operating member (the operating shaft 7 and the driving body 8) can be ensured. The resulting resistance 値 varies to obtain the desired output. In particular, in the multi-directional input device 1 of the present embodiment, the return member spring 6 biases the operating member (the operating shaft 7 and the driving body 8) at the initial position to make the pressure-sensitive conductive rubber 5 Non-pressed state. By this, it is possible to surely prevent the situation in which the pressure-sensitive conductive rubber 5 is pressed by the operating member (the operating shaft 7 and the driving body 8) at the initial position, and it is possible to surely prevent the situation in which the resistance 値 between a pair of contacts changes. Thereby, it is possible to surely obtain a desired output with the amount of change in resistance 产生 caused by the tilting of the operating members (the operating shaft 7 and the driving body 8). Further, in the multi-directional input device 1 of the present embodiment, the pressure-sensitive conductive rubber 5 that is pressed by the pressing portion 83 is formed of one sheet, and even when any portion of the pressure-sensitive conductive rubber 5 is pressed, Get uniform features. Further, the present invention is not limited to the above embodiment, and various modifications can be made. In the above-described embodiment, the size, the shape of the shape, the shape of the -20-200947489, the arrangement and the number of the contacts, and the like are not limited thereto, and can be appropriately changed within the range in which the effects of the present invention can be exerted. Further, appropriate modifications can be made without departing from the scope of the invention. For example, in the above embodiment, the operation member for pressing the pressure-sensitive conductive rubber 5 in response to the tilting operation is constituted by two members of the operation shaft 7 and the driving body 8. However, the structure of the operating member that presses the pressure-sensitive conductive rubber 5 is not limited thereto, and can be appropriately changed. For example, the operating member can be constituted by a member that integrates the operating shaft 7 and the driving body 8 in the above embodiment. It is also possible not to have a center button switch. In this case, the return spring may be not a ring shape but a non-porous surface. Even when the structure of the operating member is changed in this manner, the same effects as those of the above embodiment can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS Table 1 is an exploded perspective view of a multidirectional input device according to an embodiment of the present invention. Fig. 2 is a plan view showing a casing provided in the multidirectional input device of the above embodiment. Fig. 3 is a view showing the fixed contact provided in the casing of the multidirectional input device of the above embodiment. Fig. 4 is a view showing an equivalent circuit of the multidirectional input device of the above embodiment. 5(a) to 5(d) are views for explaining the structure of a driving body included in the multidirectional input device of the above embodiment. -21 - 200947489 Fig. 6 is a perspective view showing the appearance of the multidirectional input device of the above embodiment. Fig. 7 is a plan view of the multidirectional input device of the above embodiment. Fig. 8 is a cross-sectional view of the one-point chain line A shown in Fig. 7. Fig. 9 is a cross-sectional view of the one-point chain line B shown in Fig. 7. Fig. 10 is a plan view for explaining the positional relationship of the members of the multidirectional input device of the above embodiment. Fig. 11 is a plan view for explaining the positional relationship of members of the multidirectional input device _ of the above embodiment. Fig. 12 is a plan view for explaining the positional relationship of members of the multidirectional input device of the above embodiment. Fig. 13 is a plan view for explaining the positional relationship of the members of the multidirectional input device of the above embodiment. Fig. 14 is a plan view for explaining the positional relationship of members of the multidirectional input device of the above embodiment. Fig. 15 is a cross-sectional view showing a state in which the multi-directional input device of the above embodiment performs a tilt input operation. [Description of main component symbols] 1 : Multi-directional input device 2: Frame 2〇: Fixed contact 201: First fixed contact 201a~201h: Contact-22-200947489 202: Second fixed contact 202a: Central connection Point 202b: external contact 2 1 : accommodating portion 22 : recessed portion 23 : recessed portion 24 : engaging portion 〇 3 : movable contact plate 3 1 : protruding portion 32 : base portion 4 '·adhesive sheet 41 : protruding portion 5 : Pressure-sensitive conductive rubber 51: opening portion 6: return spring® 61 to 64: arm portion 7: operation shaft 71: flange portion 72: protruding portion 8: driving body 81: insertion hole 82: plate portion 83: Pressing portion 84: recessed portion-23 200947489 85: protruding portion 86: recessed portion 9: mounting member 9 1 : upper surface portion 92 : opening portion 93 : fixing portion
-24--twenty four-