200913395 九、發明說明 【發明所屬之技術領域】 本發明係關於用以導通裝卸自如地裝設於 及其他電子機器之電池收容部之電池組與內建 器之基板之電源線的接觸銷，尤其是’與有利 器之薄型化之物相關。 【先前技術】 市販之行動電話機，其基本構成係具有裝 設於電池收容部之電池組、及利用該電池組之 作之內建電路基板，介由接觸銷接續電池組之 電路基板之電源線。 行動電話機之分野，持續以薄型化爲目的 年來，藉由液晶背光單元及電池組等之薄型化 開發出厚度只有11 mm程度的薄型行動電話機 ，然而，藉由純色有機EL顯示器之導入等， 電話機之薄型化會更爲加速。此外，很容易就 ，在以與行動電話機相同之薄型化爲目標的開 及筆記型電腦、以及其他電子機器的薄型化也 。爲了對應前述電子機器之薄型化，前述接觸 快薄型化。 電子機器所採用之接觸銷，例如，專利文 。該文獻之接觸銷，如第1圖、第2圖所示， 簧邰（9 )及配設於其前端之接點部（7 )。其 行動電話機 於該電子機 於該電子機 卸自如地裝 電力執行動 電極及內建 的開發。近 等，例如， 並投入市場 今後，行動 可以預測到 發下，PDA 同樣會加速 銷也必須儘 獻1所示者 具有S形彈 次，接點部 -5- 200913395 (7)前端之接點（la)藉由從其前面被推壓而使S形彈 簧部（9 )被壓縮並產生彈性變形’而使接點部（7 )整體 被推入殼體（2)內之構造。 然而，專利文獻1之接點銷時’其接點部（7 )係朝 斜上方豎起之構造（參照專利文獻1之第10圖），此外 ，S形彈簧部（9 )係朝其接點部（7 )之豎起高度方向擴 大的構造。所以，專利文獻1之接點銷高度，因爲受到接 點部（7 )之豎起高度及S形彈簧部（9 )之擴大寬度的限 制*因爲其豐起局度及擴大寬度而無法得到較薄的接點銷 ，而預測無法對應今後之薄型行動電話機及其他電子機器 〇 此外，專利文獻1之接點銷，因爲接點部（7 )係在 導引孔（無符號）內滑動的構造，會因爲其滑動部積存灰 塵，導致接點部（7 )沈陷於導引孔而無法朝外突出，而 容易發生接點部（7)之接觸不良的問題。 [專利文獻1]日本特開2004-22406號公報 【發明內容】 爲了解決上述問題’本發明的目的係在提供，不易發 生接觸不良’且適合行動電話機及其他電子機器之薄型化 的接觸銷。 爲了達成則述目的’本發明之接觸銷，係用以導通可 裝卸自如地安裝於電子機器之電池收容部之電池組與該電 子機器之內建電路基板之電源線的接觸銷，其特徵爲，前 -6- 200913395 述接觸銷係由，配置於前述電池收容部之側方向的殼體、 及裝設於前述殼體之銷本體所構成，前述銷本體之構成係 具有：彎折成形具有至少2個以上之編柵部的板彈簧材， 而且，可以沿著前述電池收容部之底面方向屈伸地配置之 彈性部；配設於前述彈性部之一端側，接觸於前述電池組 之電極部的接點部；以及配設於前述彈性部之另一端側， 接續於前述內建電路基板之電源線的接續部所構成：且， 從前述電池組之電極部對前述接點部之前端施加推壓力時 ，該接點部，相對於前述電池收容部之底面以横向呈圓弧 狀地被推入，而於前述電極部之表面滑動。該編柵部，爲 了確保銷本體之彈簧復原力，必須具有至少2個，然而’ 因爲銷本體係裝設於殼體，故爲可維持彈簧復原力且可收 容於殼體內之程度的數。 前述接點部亦可彎折成倒U字形，並於其前端部配 設內側彎曲部。 前述接點部之寬度，亦可成形爲小於前述彈性部之寬 度。 前述板彈簧材亦可彎折成形爲Μ形或W形。 亦可以採用，該殼體之樹脂成形時，於前述殼體之底 面側配設嵌入成形之金屬板製之端子的構造。 亦可以爲以下之構成，於前述殼體之底面側，配設以 供插入前述銷本體爲目的之溝，前述銷本體，連接於前述 彈性部之另一端側之側方，而且，具有以藉由從前述溝插 入而使前述銷本體壓入裝設於前述殻體爲目的之裝設部’ -7- 200913395 前述接續部，連接於前述裝設部。 前述本發明時，前述「電子機器」係可以爲行動電話 機。此外，「電子機器」包含如PDA及筆記型電腦等之 攜帶式薄型電子機器在內。 本發明之接觸銷，其銷本體之具體構成，係採用彈性 部可沿著電池收容部之底面方向屈伸地配置的構造。所以 ’該銷本體，因爲無法相對於電池收容部之底面在縱向進 行屈伸，無需於電池收容部之縱向確保其縱向屈伸動作之 必要寬度，故適合行動電話機及其他電子機器之薄型化。 此外，依據本發明之接觸銷，採用以下之構造，推壓 力從電池組之電極部作用於接點部之前端時，該接點部， 相對於電池收容部之底面以横向呈圓弧狀地被推入，而於 電極部之表面滑動的構造。所以，因爲接點部在電極之表 面滑動，可排除接點部與電極之間的灰塵及其他異物，不 易發生接觸不良，而隨時得到良好的接觸狀態。 【實施方式】 以下，參照附錄圖面，針對以實施本發明爲目的之最 佳形態進行詳細說明。 <第1實施形態> 第1圖係應用本發明第1實施形態之接觸銷的行動電 話機外観圖，第2圖係接觸銷之剖面圖，第6圖係接觸銷 之動作說明圖。 -8- 200913395 本接觸銷1，如第1圖所示’係被當做用以導通裝卸 自如地安裝於行動電話機A之電池收容部B之電池組c 與行動電話機A之內建電路基板D之電源線E的手段來 使用。 本接觸銷1，如第2圖所示’係由配置於電池收容部 B (參照第1 ( a ) 、（ b )圖）之側方向的樹脂製殼體2、 裝設於殼體2之金屬板製銷本體3、以及安裝於殻體2之 樹脂型罩蓋所構成。 第3圖係殼體2之說明圖。殼體2，如第3圖之（b )、(d ) 、（ f)所示，配設著3個裝設孔5，該等裝設 孔5的兩端5A、5B皆形成開口，其一端5A內側係配設 著段部5 C之形狀，而可以將銷本體3從另一端5 B側插 入並安裝於裝設孔5內（參照第6 ( a )圖）。此外，殼 體2之兩側面，突出成形有以安裝罩蓋爲目的之爪6。 此外，於該殼體2之底面側’配設著於該殼體2之樹 脂成形時嵌入成形之金屬板製端子7。端子7，從殼體2 之兩側面朝外側突出’以焊接等固定於行動電話機A之 內建電路基板D，而使本接觸銷1固定於特定位置。 前述端子7，只具有用以將本接觸銷1固定於特定位 置之手段的機能者，因爲與銷本體3係不同的零件，故無 需以與銷本體3相同之價格昂貴的金屬來製作，只要以便 宜的金屬板來製作即可。 第4圖係銷本體3之說明圖。銷本體3係由從—片金 屬板冲切形成之彈性部3 〇、接點部3 1、及接續部3 2所構 -9- 200913395 成。前述彈性部3 0，如第4 ( a)圖所示，以具有3個 柵部30D、30E、30F之方式將板彈簧材彎折成形爲M 或W形。彈性部3 0，係以可沿著電池收容部B之底面 方向（第6(b)圖之箭頭G所示方向）屈伸之方式配 。前述接點部3 1，配設於前述彈性部3 0之一端3 Ο A側 接觸於電池組C之電極部C1。前述接續部32’配設於 述彈性部3 0之另一端3 Ο B側’接續於前述內建電路基 D之電源線E。 前述銷本體3之彈性部3 0，如第6 ( a )圖所示’ 插入殻體2之裝設孔5時’其Μ形或W形之肩部3 0 C 觸於該裝設孔5之段部5 C。藉此，利用該段部5 C做爲 擋部，而使銷本體3整體不會從裝設孔5之一端5 Α朝 脫落。 前述銷本體3之接點部3 1，如第2 ( a )圖所示， 殼體2側時，係彎折成倒U字形，以從裝設孔5之一 5A朝外部露出之方式突出，而可接觸電池組C之電極 C1。 前述銷本體3之接續部3 2，係從彈性部3 0之另一 3 0B之側部彎折成直角之形狀，焊接於內建電路基板D 電源線E。 第5圖係罩蓋之說明圖。罩蓋，於底板部40之兩 具備可彈性變形之側板部4 1，各側板部4 1形成著卡合 42。藉由使前述殼體2側面之爪6插入卡合於該等卡合 42’該罩蓋很輕鬆即可安裝固定於殼體2，各裝設孔5 編 形 B 1 置 八 刖 板 被 抵 阻 外 從 端 部 端 之 側 孔 孔 之 -10- 200913395 另一端5B側，係由該罩蓋4所密封。 此外，該罩蓋4之底板部40，將插入並安裝於裝設 孔5內之銷本體3之彈性部3 0朝其裝設孔5之段部5 C推 壓。藉此，銷本體3之彈性部3 0，處於定位於裝設孔5 內之狀態，而可以於其Μ形或W形之內側方向進行收縮 變形。 其次，參照第1圖及第6圖，針對將如上所述之構成 之本接觸銷1應用於行動電話機時之動作例進行說明。 本接觸銷〗，如第1圖所示，係配置於電池收容部Β 之側方向。將電池組C收容於電池收容部Β時’將電池 組C斜向插入電池收容部Β，同時，以其電池組C之電極 部C 1推壓接觸銷1之接點部3 1前端（參照第6 ( b )圖 之箭頭P )。 藉此，接觸銷1之彈性部3 0，執行沿著電池收容部B 之底面Β1的屈伸動作（參照第6 ( a )圖之箭頭G )而收 縮，對應其收縮量，接觸銷1之接點部31相對於電池收 容部B之底面B1’以横向呈圓弧（參照第6(a)圖之箭 頭F )被推入裝設孔5。藉此，得到接點部3 1與電池組C 之電極部C 1的接觸狀態。 如前面所述，藉由呈圓弧將推入之動作，因爲接點部 3 1於電極部C 1表面滑動，可排除接點部3 1與電極部c } 之間的灰塵及其他異物，而得到良好之接觸狀態。 從電池收容部B取出電池組c後，因爲作用於接觸 銷1之接點部3 1的推壓力消失’接觸銷1之彈性部3 〇， -11 - 200913395 藉由其彈簧復原力而獲得伸展，對應伸展量，接觸銷之接 點部3 1彈出裝設孔5之外，而恢復電池組收容前之原來 狀態。 如以上之說明所示，本實施形態之接觸銷1，其銷本 體3之具體構成係採用彈性部3 0可沿著電池收容部B之 底面B1方向屈伸之方式配置的構造。所以，因爲該銷本 體3不會相對於電池收容部B之底面B1而在縱向屈伸， 故電池收容部B之縱向無需確保其縱向之屈伸動作所必要 之寬度，適合應用於行動電話機A之薄型化。本接觸銷1 之高度，只要爲彈性部30之寬度尺寸加上殼體2之厚度 尺寸即可。 此外，依據本實施形態之接觸銷1，採用以下之構造 ，亦即，推壓力從電池組C之電極部C1作用於接點部3 1 之前端時，該接點部3 1，相對於電池收容部B之底面B1 ’於横向呈圓弧狀被推入，而於電極部C1之表面滑動的 構造。所以，因爲接點部3 1於電極部c 1之表面滑動，故 可排除接點部3 1與電極部C 1之間的灰麈及其他異物，不 易發生接觸不良，而隨時可得到良好之接觸狀態。 此外，上述實施形態時，係以行動電話機A爲例， 來針對應用本發明之接觸銷1來進行說明，然而，本發明 之接觸銷1，亦可應用於行動電話機A以外之薄型電子機 器。此外’銷本體3之數並未限制爲3個，亦可以爲其以 上或以下。 -12- 200913395 <第2實施形態> 其次，針對本發明之接觸銷之第2實施形態進行說明 〇 第7圖係殼體之說明圖，係對應於上述第3圖者，（ a )係殻體之正面圖，（b )係上面圖，（c )係側面圖， (d )係底面圖，（e )係A-A線剖面圖，（f)係背面圖 。第8圖係銷本體之說明圖，係對應於上述第4圖者，（ a )係銷本體之正面圖，（b )係右側面圖，（c )係左側 面圖，（d)係底面圖。第9圖係銷本體之裝設方法的說 明圖，（a )係裝設起始狀態、（b )係裝設後狀態的剖面 圖。第10圖係接觸銷之動作說明圖，係對應於上述第6 圖者，（a )係推壓力未作用於接點部之狀態，（b )係開 始對接點部施加推壓力時之狀態、（c )係進一步對接點 部施加推壓力之狀態的剖面圖。此外，第9圖包含第7圖 (b )之B -B線剖面圖，第1 0圖省略了銷本體固定於殼體 內之狀態之B - B線剖面圖的一部分。 此外，以下之說明及第7圖〜第1 〇圖中，對於只有 與上述第1實施形態所示之構成及形狀不同而具有相同機 能者，賦予相同符號，只針對與上述第1實施形態不同之 部分進行說明，因爲詳細說明與上述相同，故此處省略其 說明。 本實施形態之接觸銷1與上述第1實施形態之主要差 異處，係銷本體3之構造大不相同、沒有罩蓋4、以及殼 體2具有溝5E之諸處。 •13- 200913395 本實施形態之殼體2，係如第7圖所示之構成。與上 述第1實施形態不同之處，係於殻體2之背面側具有用以 取代端子7、8之凸部8、8。於行動電話機A之內建電路 基板D之接觸銷1的設置部位，配設著對應該凸部8、8 之凸部孔（未圖示），藉由該凸部8、8嵌合於凸部孔， 接觸銷1被固定於內建基板電路D上。此外，內部之構 造方面，與上述第1實施形態大致相同，然而，如第9 ( a )圖所示，於裝設孔5之一端5A側，具有與內側彎曲部 3 1B卡合之段部5D。另一方面，於裝設孔5之另一端5B 側，以從裝設孔5之另一端5 B於銷本體3之插入方向X1 具有特定長度之方式，配設著以使銷本體3嵌插固定於殼 體2爲目的之溝5E、5E。 本實施形態之銷本體3，係彎折成形爲具有2個編柵 部3 〇D、3 0E之板彈簧構件，具有彈性部30、接點部31 、接續部3 2、以及裝設部3 3。此外，該銷本體3，係以 一片金屬板進行冲切加工及彎曲加工而爲一體成形。 彈性部3 0並非Μ形或W形而爲N形或S形。亦即 ，如第8 ( a)圖所示，由2個編柵部30D、3 0Ε所構成， 與上述第1實施形態相比，編柵部少了 1個。此外，彈性 部之另一端3 0B，不同於上述第1實施形態，而係於銷本 體3之長度方向延伸。 接點部3 1之形狀，從正面觀看之狀態時，大致與上 述第1實施形態相同，與上述第1實施形態不同之處，係 於接點部3 1之前端3 1 A側配設著朝內側彎折成形之內側 -14- 200913395 彎曲部3 1 B。該內側彎曲部3 1 B ’於接觸銷1之動作狀態 時，如後面所述’具有阻擋部之機能。另一方面’從側面 觀看之狀態時，與上述第1實施形態不同之處’本實施形 態時，於彈性部3 0開始變形之前，接點部3 1從彈性部之 一端30A朝前方向下低垂之方式變形（參照第10(a)圖 )。所以，接點部31之寬度L1被設定成小於彈性部3 0 之寬度L2。藉由如上所示構成，可以維持銷本體3之彈 簧復原力，與上述第1實施形態相比，不但容易排除接點 部31與電極部C1之間的灰塵及其他異物，而且不易發生 接觸不良，而隨時得到良好之接觸狀態。 接續部3 2，焊接於內建電路基板D之電源線E方面 ，與上述第1實施形態相同，然而，該接續部3 2 ，如 第8圖所示’係介由後述裝設部3 3接續於彈性部3 0。 裝設部33，正面觀看時係略呈Η形狀，於其中央部 ’亦即’於Η形狀之2個凹部，分別連接著接續部3 2、 32 ’而且’於兩側，配設著對應於殼體2之溝5Ε、5Ε的 爪33Α、33Α。藉由上述所示之構成，不易從殼體2拔出 銷本體3。詳細如後面所述。 其次’參照第9圖，針對銷本體之裝設方法進行說明 〇 首先’如第9 ( a )圖所示’將銷本體3從接點部3 j 插入殼體2之裝設孔之另一端5B時，裝設部33之爪33A 、33A於殼體2之溝5E、5E內從裝設孔之另一端5B朝 一端5A移動。此外，持續朝箭頭χ〗方向插入時，因爲 -15- 200913395 無法更深入溝5E’5E’爪33A、33A會分別被殻體2之 內壁5F、5F限制於其內側，接點部3 1從裝設孔之一端 5A突出之狀態，銷本體3被壓入固定於殼體2內。此時 ’內側彎曲部3 1 B卡合於段部5 D。如此，藉由銷本體3 被壓入殼體2內，即使銷本體3承受到來自外部之壓力時 ，亦可防止從殼體2脫落。 其次’參照第1 0圖’針對接觸銷之動作進行說明。 本實施形態時’亦以電池組c之電極部c1推壓接點 部31之前端’藉此，銷本體3變形而處於銷本體3彈推 電極部C 1之狀態，電池組C收容於電池收容部b之點， 及取出電池組C而使作用於接點部3〗之推壓力消失，銷 本體3藉由其彈簧復原力而恢復原狀之點，以及彈性部 30可沿者電池收谷部B之底面B1方向屈伸之方式配置的 構造之點’與上述第1實施形態相同，以下只針對相異處 進行說明。 首先’本實施形態之接觸銷1於起始動作狀態時，如 第1 0 ( a)圖所示，接點部3 i朝前方（箭頭γ 1方向）向 下彎曲而從彈性部之一端3 0 A進行變形（參照第1 〇 ( a ) 圖之虛線部）。此時’內側彎曲部3 1 B進行於殼體2之裝 設孔之一端5 A側之內壁面滑動的動作。此外，銷本體3 被推壓時’內側彎曲部3 1 B抵接於彈性部之肩部3 〇 c，從 彈性部之一端3 0 A之變形受到抑制。本實施形態時，如 上述說明所不’因爲接點部3 1之寬度l 1設定成小於彈性 邰3 0之寬度L 2 ’而且’配設著內側彎曲部3丨b，故彈性 -16- 200913395 部3 0開始變形前，會進行接點部3 1之上述變形。藉由上 述機構，可及早除去附著於電極部C1及接點部3 1的灰塵 及異物，操作性亦較佳。 此外，銷本體3被推壓時，從第1 〇 ( b )圖所示之狀 態進入該圖（c )所示之狀態，彈性部之一端3 0 A側持續 於殼體2之內壁5F上滑動而朝箭頭X2方向移動，而使 接點部31移動至後方（箭頭Y2方向）。此移動時，彈 性部3 0，因爲編柵部3 0 D、3 0 E皆朝下方彎折，而成爲整 體變形。其次’接點部3 1彈推電池組C之電極部C1的 狀態下，電池組C被收容於電池收容部B內。 綜合以上說明，本第2實施形態時，係將接點部31 之寬度L 1設定成小於彈性部3 〇之寬度l 2，將內側彎曲 部3 1配設於接點部3 1之前端3丨a的構成。藉此，彈性 部3 〇開始變形前’進行接點部3 1之上述變形，藉此，可 及早除去除著於電極部C1及接點部31的灰塵及異物，而 且，操作性亦較佳。 【圖式簡單說明】 H 1 ®丨系Μ用本發明之一實施形態之接觸銷的行動電 g舌機之外観圖’ （a )係行動電話機之背面圖，（b )係其 側面之剖面圖。 第2圖係接觸銷之剖面圖，圖中之（a )係接觸銷之 正面圖，（b )係其上面圖，（c )係其側面圖。 第3圖係殼體之說明圖，圖中之（a)係殼體之正面 -17- 200913395 圖，（b )係其上面圖，（c )係其側面圖，（d )係其底 面圖’ （e )係A-A線剖面圖，（f)係B-B線剖面圖。 第4圖係銷本體之說明圖，（a )係銷本體之正面圖 ’ （b )係其右側面圖’ （c )係其左側面圖，（d )係其 底面圖。 第5圖係罩蓋之說明圖，圖中之（a)係罩蓋之正面 圖，（b )係其上面圖，（c )係其側面圖，（d )係其下 面圖，（e )係A-A線剖面圖，（f) B-B線剖面圖。 第6圖係接觸銷之動作說明圖，圖中之（a)係推壓 力未作用於接點部時之說明圖，（b )係推壓力施加於接 點部時之說明圖。 第7圖係本發明之第2實施形態之殼體的說明圖，（ 〇係殻體之正面圖，（b )係上面圖，（c )係側面圖， (d )係底面圖，（e )係A-A線剖面圖，（f)係背面圖 〇 第8圖係本發明之第2實施形態之銷本體的說明圖， (a )係銷本體之正面圖，（b )係右側面圖，（c )係左 側面圖，（d )係底面圖。 第9圖係本發明之第2實施形態之銷本體之裝設方法 的說明圖，（a )係裝設起始狀態，（b )係裝設後之狀態 的剖面圖。 第1 〇圖係本發明之第2實施形態之接觸銷的動作說 明圖，（a )係推壓力未作用於接點部之狀態，（b )係推 壓力開始施加於接點部時之狀態，（c )係進一步對接點 -18- 200913395 部施加推壓力之狀態的剖面圖。 【主要元件符號說明】 1 :接觸銷 2 :殼體 3 :銷本體 4 :罩蓋 5 :裝設孔 5A :裝設孔之一端 5 B :裝設孔之另一端 5 C :段部 5 D :段部 5E :溝 5F :內壁 6 :爪 7 :端子 3 0 :彈性部 30A :彈性部之一端 3 0B :彈性部之另一端 3 0C :彈性部之肩部 30D、30E、30F :編柵部 3 1 :接點部 3 1 A :接點部之前端 3 1 B :內側彎曲部 -19 200913395 3 2 :接續部 3 3 :裝設部 33A :爪 4 0 :罩蓋之底板部 4 1 :罩蓋之側板部 42 :卡合孔 A :行動電話機 B :電池收容部 B 1 :電池收容部之底面 C :電池組 C 1 :電極 D :內建電路基板 E :電源線 -20BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact pin for conducting a power cord for detachably mounting a battery pack of a battery accommodating portion of another electronic device and a substrate of the built-in device, in particular It is 'related to the thinner of the beneficial device. [Prior Art] The basic structure of a mobile phone is a battery pack installed in a battery accommodating portion, and a built-in circuit board using the battery pack, and a power supply line connecting the circuit board of the battery pack via a contact pin. . In the past, the thin-type mobile phone has been developed to reduce the thickness of the liquid crystal backlight unit and the battery pack, and the thin mobile phone with a thickness of only 11 mm has been developed. However, the introduction of a solid color organic EL display, etc., the telephone The thinning will be more accelerated. In addition, it is easy to reduce the thickness of a notebook computer and other electronic devices that are the same as the thinning of a mobile phone. In order to reduce the thickness of the electronic device, the contact is made thinner. Contact pins used in electronic machines, for example, patents. As shown in Fig. 1 and Fig. 2, the contact pin of this document is a spring file (9) and a contact portion (7) disposed at the front end thereof. The mobile phone is used in the electronic machine to unload the electric power to perform the moving electrode and the built-in development. Nearly, for example, and put into the market in the future, the action can be predicted to be issued, the PDA will also accelerate the pin and must also provide the S-shaped bullets, the contact part -5 - 200913395 (7) the front end of the joint (la) A configuration in which the contact portion (7) is entirely pushed into the casing (2) by being pressed from the front side thereof so that the S-shaped spring portion (9) is compressed and elastically deformed. However, in the case of the contact pin of Patent Document 1, the contact portion (7) is a structure that rises obliquely upward (see FIG. 10 of Patent Document 1), and the S-shaped spring portion (9) is attached thereto. The structure in which the point height of the point portion (7) is enlarged. Therefore, the height of the contact pin of Patent Document 1 is limited by the height of the erection of the contact portion (7) and the expanded width of the S-shaped spring portion (9)* because of its richness and widening of the width. Thin contact pin, and it is predicted that it cannot cope with future thin mobile phones and other electronic devices. In addition, the contact pin of Patent Document 1 has a structure in which the contact portion (7) slides in the guide hole (unsigned). The dust is accumulated in the sliding portion, and the contact portion (7) sinks into the guide hole and cannot protrude outward, which causes a problem of poor contact of the contact portion (7). [Explanation of the Invention] In order to solve the above problems, the object of the present invention is to provide a contact pin which is less likely to cause contact failure and which is suitable for thinning of a mobile phone and other electronic devices. In order to achieve the above-mentioned object, the contact pin of the present invention is a contact pin for electrically connecting a battery pack detachably attached to a battery accommodating portion of an electronic device to a power supply line of a built-in circuit board of the electronic device, and is characterized in that , the front contact -6-200913395, wherein the contact pin is configured by a housing disposed in a side of the battery housing portion and a pin body mounted on the housing, wherein the pin body has a configuration of bending forming a leaf spring material having at least two or more meshing portions, and an elastic portion that is disposed to be bent along a bottom surface of the battery housing portion; and is disposed on one end side of the elastic portion to contact an electrode portion of the battery pack And a connection portion disposed on the other end side of the elastic portion and connected to the power supply line of the built-in circuit board: and applying the electrode portion from the battery unit to the front end of the contact portion When the pressure is pushed, the contact portion is pushed in a circular arc shape in the lateral direction with respect to the bottom surface of the battery housing portion, and slides on the surface of the electrode portion. In order to secure the spring restoring force of the pin body, the braiding portion must have at least two. However, since the pin system is mounted on the casing, it is a number that can maintain the spring restoring force and can be accommodated in the casing. The contact portion may be bent into an inverted U shape, and an inner curved portion may be disposed at a front end portion thereof. The width of the contact portion may be formed to be smaller than the width of the elastic portion. The leaf spring material may also be bent into a dome shape or a W shape. In the resin molding of the casing, a structure in which a terminal made of a formed metal plate is fitted to the bottom surface side of the casing may be disposed. In the following configuration, a groove for inserting the pin body may be disposed on a bottom surface side of the casing, and the pin body may be connected to the side of the other end side of the elastic portion, and may have a The connecting portion is attached to the mounting portion by inserting the groove from the groove and pressing the pin body into the mounting portion '-7-200913395 for mounting the housing. In the above invention, the "electronic device" may be a mobile phone. In addition, "electronic devices" include portable thin electronic devices such as PDAs and notebook computers. In the contact pin of the present invention, the pin body has a specific configuration in which the elastic portion is disposed to be bent in the direction of the bottom surface of the battery housing portion. Therefore, since the pin body cannot be flexed and extended in the longitudinal direction with respect to the bottom surface of the battery housing portion, it is not necessary to secure the necessary width of the longitudinal bending operation in the longitudinal direction of the battery housing portion, and therefore it is suitable for thinning of mobile phones and other electronic devices. Further, according to the contact pin of the present invention, when the pressing force acts on the front end of the contact portion from the electrode portion of the battery pack, the contact portion is curved in a circular arc shape with respect to the bottom surface of the battery housing portion. A structure that is pushed in and slides on the surface of the electrode portion. Therefore, since the contact portion slides on the surface of the electrode, dust and other foreign matter between the contact portion and the electrode can be eliminated, and contact failure is less likely to occur, and a good contact state is obtained at any time. [Embodiment] Hereinafter, the best mode for carrying out the invention will be described in detail with reference to the appended drawings. <First Embodiment> Fig. 1 is a cross-sectional view of a mobile phone to which a contact pin according to a first embodiment of the present invention is applied, Fig. 2 is a cross-sectional view of a contact pin, and Fig. 6 is an operation explanatory view of a contact pin. -8- 200913395 The contact pin 1, as shown in Fig. 1, is used as the built-in circuit board D of the battery pack c for accommodating the battery accommodating portion B of the mobile phone A and the built-in circuit board D of the mobile phone A. The means of the power cord E is used. As shown in Fig. 2, the contact pin 1 is mounted on the resin case 2 disposed in the battery housing portion B (see the first (a), (b)) side, and is mounted on the casing 2. The metal plate pin body 3 and the resin type cover attached to the casing 2 are formed. Fig. 3 is an explanatory view of the casing 2. The housing 2, as shown in FIGS. 3(b), (d), and (f), is provided with three mounting holes 5, and both ends 5A, 5B of the mounting holes 5 are formed with openings. The inside of the one end 5A is provided with the shape of the segment portion 5C, and the pin body 3 can be inserted from the other end 5B side and attached to the mounting hole 5 (see Fig. 6(a)). Further, on both sides of the casing 2, claws 6 for the purpose of attaching the cover are formed to protrude. Further, a metal plate terminal 7 that is insert-molded during molding of the resin of the casing 2 is disposed on the bottom surface side of the casing 2. The terminal 7 protrudes outward from both side faces of the casing 2 and is fixed to the built-in circuit board D of the mobile phone A by welding or the like, and the contact pin 1 is fixed at a specific position. The terminal 7 has only a function for fixing the contact pin 1 to a specific position. Since the pin body 3 is different from the pin body 3, it is not necessary to manufacture the same expensive metal as the pin body 3, as long as it is It can be made with cheap metal plates. Fig. 4 is an explanatory view of the pin body 3. The pin body 3 is formed of an elastic portion 3 冲 formed by punching a sheet metal plate, a joint portion 3 1 , and a joint portion 3 2 -9-200913395. As shown in Fig. 4(a), the elastic portion 30 is formed by bending the leaf spring material into M or W shape so as to have three grid portions 30D, 30E, and 30F. The elastic portion 30 is provided so as to be bendable in the direction of the bottom surface of the battery housing portion B (the direction indicated by the arrow G in Fig. 6(b)). The contact portion 3 1 is disposed on the electrode end portion C1 of the battery unit C at one end 3 Ο A side of the elastic portion 30. The connecting portion 32' is disposed on the other end 3 Ο B side of the elastic portion 30, and is connected to the power supply line E of the built-in circuit base D. The elastic portion 30 of the pin body 3, as shown in FIG. 6(a), is inserted into the mounting hole 5 of the housing 2, and the shoulder portion or the W-shaped shoulder portion 3 0 C contacts the mounting hole 5 Section 5 C. Thereby, the segment portion 5C is used as the stopper portion, so that the entire pin body 3 does not come off from the one end 5 of the mounting hole 5. The contact portion 3 of the pin body 3 is bent as an inverted U-shape when the casing 2 side is shown as shown in the second (a), and is protruded from the mounting hole 5 to the outside. And can contact the electrode C1 of the battery group C. The connecting portion 32 of the pin main body 3 is bent at a right angle from the side of the other portion 30 of the elastic portion 30, and is welded to the built-in circuit board D power supply line E. Figure 5 is an explanatory view of the cover. The cover has two elastically deformable side plate portions 4 in the bottom plate portion 40, and the side plate portions 4 1 form an engagement 42. By inserting the claws 6 on the side of the casing 2 into the engaging hooks 42', the cover can be easily attached and fixed to the casing 2, and the mounting holes 5 are arranged in a B1 setting. The outer side of the side hole from the side end of the -10-200913395 and the other end 5B side are sealed by the cover 4. Further, the bottom plate portion 40 of the cover 4 presses the elastic portion 30 of the pin main body 3 inserted into and mounted in the mounting hole 5 toward the segment portion 5 C of the mounting hole 5. Thereby, the elastic portion 30 of the pin main body 3 is in a state of being positioned in the mounting hole 5, and can be contracted and deformed in the inner side of the Μ shape or the W shape. Next, an operation example when the present contact pin 1 having the above configuration is applied to a mobile phone will be described with reference to Figs. 1 and 6 . As shown in Fig. 1, the contact pin is disposed in the side of the battery housing portion Β. When the battery pack C is housed in the battery housing portion ', the battery pack C is obliquely inserted into the battery housing portion Β, and the tip end portion 3 1 of the contact pin 1 is pressed by the electrode portion C 1 of the battery pack C (refer to Arrow P) of Figure 6 (b). Thereby, the elastic portion 30 of the contact pin 1 is contracted along the bending operation of the bottom surface Β1 of the battery housing portion B (see the arrow G in the sixth figure (a)), and the contact pin 1 is connected in accordance with the amount of contraction. The dot portion 31 is pushed into the mounting hole 5 with respect to the bottom surface B1' of the battery housing portion B in a circular arc direction (see an arrow F in the sixth drawing (a)). Thereby, the contact state of the contact portion 31 with the electrode portion C1 of the battery pack C is obtained. As described above, by the action of pushing in a circular arc, since the contact portion 31 slides on the surface of the electrode portion C1, dust and other foreign matter between the contact portion 31 and the electrode portion c} can be eliminated. And get a good contact state. After the battery pack c is taken out from the battery accommodating portion B, since the urging force acting on the contact portion 31 of the contact pin 1 disappears, the elastic portion 3 接触 of the contact pin 1, -11 - 200913395 is stretched by its spring restoring force. Corresponding to the amount of extension, the contact portion 31 of the contact pin pops out of the mounting hole 5, and restores the original state before the battery pack is housed. As described above, the contact pin 1 of the present embodiment has a structure in which the pin body 3 is configured such that the elastic portion 30 can be bent in the direction of the bottom surface B1 of the battery housing portion B. Therefore, since the pin body 3 does not flex in the longitudinal direction with respect to the bottom surface B1 of the battery housing portion B, the longitudinal direction of the battery housing portion B does not need to ensure the width necessary for the longitudinal flexion and extension operation, and is suitable for the thin type of the mobile phone A. Chemical. The height of the contact pin 1 may be the width dimension of the elastic portion 30 plus the thickness of the casing 2. Further, according to the contact pin 1 of the present embodiment, the contact portion 3 is opposed to the battery when the pressing force acts on the front end of the contact portion 3 1 from the electrode portion C1 of the battery pack C. The bottom surface B1' of the accommodating portion B is pushed in a circular arc shape in the lateral direction and is slidable on the surface of the electrode portion C1. Therefore, since the contact portion 31 slides on the surface of the electrode portion c1, ash and other foreign matter between the contact portion 31 and the electrode portion C1 can be eliminated, and contact failure is less likely to occur, and good at any time can be obtained. Contact status. Further, in the above-described embodiment, the contact pin 1 of the present invention is described by taking the mobile phone A as an example. However, the contact pin 1 of the present invention can also be applied to a thin electronic device other than the mobile phone A. Further, the number of the pin bodies 3 is not limited to three, and may be above or below. -12-200913395 <Second Embodiment> Next, a second embodiment of the contact pin according to the present invention will be described. FIG. 7 is an explanatory view of the housing, corresponding to the third figure, (a) The front view of the casing, (b) is the top view, (c) is the side view, (d) is the bottom view, (e) is the AA line cross-section, and (f) is the rear view. Fig. 8 is an explanatory view of the main body of the pin, corresponding to the fourth figure, (a) front view of the main body of the pin, (b) right side view, (c) left side view, (d) bottom side Figure. Fig. 9 is an explanatory view showing a method of mounting the main body, (a) showing the initial state, and (b) a cross-sectional view showing the state after installation. Fig. 10 is an operation explanatory diagram of the contact pin, corresponding to the sixth figure, (a) the state in which the pressing force is not applied to the contact portion, and (b) the state in which the pressing force is applied to the contact portion, (c) is a cross-sectional view showing a state in which a pressing force is further applied to the contact portion. Further, Fig. 9 includes a cross-sectional view taken along line B - B of Fig. 7 (b), and Fig. 10 shows a part of a cross-sectional view taken along line B - B of the state in which the pin body is fixed in the casing. In addition, in the following description and FIG. 7 to FIG. 1 , the same functions are given only to those having the same functions and configurations as those of the above-described first embodiment, and only the first embodiment is different. The description will be made in the same manner as the detailed description is the same as the above, and thus the description thereof is omitted here. The main difference between the contact pin 1 of the present embodiment and the above-described first embodiment is that the structure of the pin body 3 is greatly different, that the cover 4 is not provided, and that the case 2 has the groove 5E. • 13- 200913395 The casing 2 of the present embodiment is configured as shown in Fig. 7. The difference from the first embodiment described above is that the convex portions 8 and 8 for replacing the terminals 7 and 8 are provided on the back side of the casing 2. A convex portion hole (not shown) corresponding to the convex portions 8 and 8 is disposed in a portion where the contact pin 1 of the circuit board D is built in the mobile phone A, and the convex portion 8 and 8 are fitted to the convex portion. The contact hole 1 is fixed to the built-in substrate circuit D. Further, the internal structure is substantially the same as that of the above-described first embodiment. However, as shown in Fig. 9(a), the one end 5A side of the mounting hole 5 has a section that engages with the inner curved portion 3 1B. 5D. On the other hand, on the other end 5B side of the mounting hole 5, the pin body 3 is inserted so as to have a specific length from the other end 5B of the mounting hole 5 in the insertion direction X1 of the pin body 3. The grooves 5E and 5E are fixed to the casing 2 for the purpose. The pin main body 3 of the present embodiment is formed into a leaf spring member having two braided portions 3 〇D and 30E, and has an elastic portion 30, a contact portion 31, a joint portion 3, and a mounting portion 3. 3. Further, the pin main body 3 is integrally formed by punching and bending a single metal plate. The elastic portion 30 is not a dome shape or a W shape but an N shape or an S shape. In other words, as shown in Fig. 8(a), the two gate portions 30D and 30B are formed, and the number of the gate portions is reduced as compared with the first embodiment. Further, the other end 30B of the elastic portion is different from the first embodiment described above and extends in the longitudinal direction of the pin body 3. The shape of the contact portion 31 is substantially the same as that of the above-described first embodiment, and is different from the above-described first embodiment in that it is disposed on the front end 3 1 A side of the contact portion 3 1 . Bending the inside of the inner side-14- 200913395 bending part 3 1 B. The inner curved portion 3 1 B ' functions as a blocking portion as described later when the contact pin 1 is in the operating state. On the other hand, when the state is viewed from the side, it is different from the above-described first embodiment. In the present embodiment, the contact portion 31 is directed downward from the one end 30A of the elastic portion before the elastic portion 30 starts to be deformed. Deformation in a low-hanging manner (refer to Figure 10(a)). Therefore, the width L1 of the contact portion 31 is set to be smaller than the width L2 of the elastic portion 30. According to the configuration described above, the spring restoring force of the pin main body 3 can be maintained, and the dust and other foreign matter between the contact portion 31 and the electrode portion C1 can be easily removed, and the contact failure is less likely to occur than in the first embodiment. And get good contact at any time. The connection portion 32 is similar to the above-described first embodiment in that the power supply line E is soldered to the built-in circuit board D. However, the connection portion 3 2 is shown in Fig. 8 through a mounting portion 3 to be described later. It is connected to the elastic portion 30. The mounting portion 33 has a slightly sinuous shape when viewed from the front, and is connected to the splicing portions 3 2, 32 ′ and the two sides in the central portion, that is, in the two concave portions of the Η shape. The claws 33Α, 33Α of the groove 5Ε, 5Ε of the casing 2 are. With the configuration shown above, it is difficult to extract the pin body 3 from the casing 2. The details are as described later. Next, the method of mounting the pin body will be described with reference to Fig. 9. First, as shown in Fig. 9 (a), the pin body 3 is inserted from the contact portion 3 j into the other end of the mounting hole of the casing 2. At 5B, the claws 33A, 33A of the mounting portion 33 move in the grooves 5E, 5E of the casing 2 from the other end 5B of the mounting hole toward the one end 5A. In addition, when continuously inserted in the direction of the arrow χ, the -15-200913395 cannot be further penetrated into the groove 5E'5E'. The claws 33A, 33A are respectively restricted to the inner side by the inner walls 5F, 5F of the casing 2, and the contact portion 3 1 The pin body 3 is press-fitted into the casing 2 in a state of protruding from one end 5A of the mounting hole. At this time, the inner curved portion 3 1 B is engaged with the segment portion 5 D. Thus, the pin body 3 is pressed into the casing 2, and even if the pin body 3 is subjected to pressure from the outside, it can be prevented from coming off the casing 2. Next, the operation of the contact pin will be described with reference to Fig. 10'. In the present embodiment, 'the front end of the contact portion 31 is pressed by the electrode portion c1 of the battery pack c', whereby the pin body 3 is deformed and the pin body 3 is pushed to push the electrode portion C1, and the battery pack C is housed in the battery. At the point of the accommodating portion b, and when the battery pack C is taken out, the pressing force acting on the contact portion 3 disappears, the pin body 3 is restored to its original state by the spring restoring force, and the elastic portion 30 can be stored along the battery. The point of the structure in which the bottom surface B1 of the portion B is bent and stretched is the same as that of the above-described first embodiment, and only the differences will be described below. First, when the contact pin 1 of the present embodiment is in the initial operation state, as shown in the first figure (a), the contact portion 3 i is bent downward toward the front (arrow γ 1 direction) from one end 3 of the elastic portion. 0 A is deformed (refer to the dotted line of the 1st ( a ) diagram). At this time, the inner curved portion 3 1 B is slid by the inner wall surface on the one end 5A side of the mounting hole of the casing 2. Further, when the pin main body 3 is pressed, the inner curved portion 3 1 B abuts against the shoulder portion 3 〇 c of the elastic portion, and deformation from one end of the elastic portion 3 0 A is suppressed. In the present embodiment, as described above, the width l 1 of the contact portion 3 1 is set to be smaller than the width L 2 ' of the elastic 邰 30 and the inner curved portion 3 丨 b is disposed. The above deformation of the contact portion 31 is performed before the start of the deformation of the portion of the 200913395 portion. According to the above mechanism, dust and foreign matter adhering to the electrode portion C1 and the contact portion 31 can be removed as early as possible, and the operability is also preferable. Further, when the pin main body 3 is pressed, it enters the state shown in the figure (c) from the state shown in the first 〇(b), and the one end of the elastic portion 3 0 A side continues to the inner wall 5F of the casing 2. The upper slide moves in the direction of the arrow X2, and the contact portion 31 is moved to the rear (in the direction of the arrow Y2). At the time of this movement, the elastic portion 30 is deformed downward because the braid portions 3 0 D and 30 E are bent downward. Next, in a state where the contact portion 31 pushes the electrode portion C1 of the battery pack C, the battery pack C is housed in the battery housing portion B. In the second embodiment, the width L 1 of the contact portion 31 is set to be smaller than the width l 2 of the elastic portion 3 ,, and the inner curved portion 3 1 is disposed at the front end 3 of the contact portion 3 1 . The composition of 丨a. Thereby, the deformation of the contact portion 31 is performed before the elastic portion 3 starts to be deformed, whereby the dust and foreign matter removed from the electrode portion C1 and the contact portion 31 can be removed early, and the operability is also improved. . BRIEF DESCRIPTION OF THE DRAWINGS The H 1 ® 丨 Μ Μ 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触 接触Figure. Fig. 2 is a cross-sectional view of the contact pin, in which (a) is a front view of the contact pin, (b) is a top view thereof, and (c) is a side view thereof. Figure 3 is an explanatory view of the casing, in which (a) is the front of the casing -17- 200913395, (b) is the top view, (c) is the side view, and (d) is the bottom view. ' (e) is a sectional view of the AA line, and (f) is a sectional view of the BB line. Fig. 4 is an explanatory view of the main body of the pin, (a) a front view of the main body of the pin; (b) a right side view thereof (c) is a left side view thereof, and (d) is a bottom view thereof. Figure 5 is an explanatory view of the cover, in which (a) is a front view of the cover, (b) is a top view thereof, (c) is a side view thereof, and (d) is a lower view thereof, (e) It is a sectional view of the AA line, and (f) a sectional view of the BB line. Fig. 6 is an explanatory view of the operation of the contact pin, in which (a) is an explanatory view when the pressing force is not applied to the contact portion, and (b) is an explanatory view when the pressing force is applied to the contact portion. Fig. 7 is an explanatory view of a casing according to a second embodiment of the present invention, (front view of the tethered casing, (b) top view, (c) side view, (d) bottom view, (e) (A) is a cross-sectional view of the line AA, and (f) is a rear view. FIG. 8 is an explanatory view of the pin body according to the second embodiment of the present invention, (a) a front view of the main body of the pin, and (b) a right side view of the main body. (c) is a left side view, and (d) is a bottom view. Fig. 9 is an explanatory view showing a mounting method of the pin body according to the second embodiment of the present invention, (a) is an initial state, (b) Fig. 1 is a cross-sectional view showing the operation of the contact pin according to the second embodiment of the present invention, wherein (a) the pressing force is not applied to the contact portion, and (b) is pushed. (c) is a cross-sectional view showing a state in which a pressing force is applied to the contact portion -18-200913395. [Description of main component symbols] 1: Contact pin 2: Housing 3: Pin body 4: Cover 5: Mounting hole 5A: One end of mounting hole 5 B: The other end of mounting hole 5 C: Segment 5 D: Segment 5E: Groove 5F: Inner wall 6: Claw 7: Terminal 3 0: elastic portion 30A: one end of elastic portion 3 0B: the other end of elastic portion 3 0C: shoulder portion 30D, 30E, 30F of elastic portion: braided portion 3 1 : contact portion 3 1 A : front end of joint portion 3 1 B : inner curved portion -19 200913395 3 2 : connecting portion 3 3 : mounting portion 33A : claw 4 0 : bottom plate portion 4 1 of the cover: side plate portion 42 of the cover: engaging hole A: mobile phone B : Battery accommodating part B 1 : Bottom side of battery accommodating part C : Battery pack C 1 : Electrode D : Built-in circuit board E : Power cord -20