M323396 (1) 八、新型說明 【新型所屬之技術範圍】 本創作爲推拉式橡皮擦，特別是呈長條狀的橡皮擦可 定位精準地從本體自由伸出、縮回，當使用時擦皮擦不會 意外地縮回本體內，且使用者可輕易地自行更換橡皮擦的 推拉式橡皮擦。 【先前技術】 傳統上，推拉式橡皮擦是採用圓棒形的橡皮擦，並將 該圓棒狀的橡皮擦收納於同樣呈圓棒狀的中空軸筒內，其 滑動部是由用來安裝圓棒形橡皮擦的安裝部、和防止縮回 的縮回防止部及滑動部本體所連結成一體，上述的縮回防 止部是連結成：只有在承受來自於橡皮擦安裝部與滑動部 本體的擠壓力時，朝軸筒之半徑方向的外側位移，進而使 該縮回防止部與軸筒上的被卡合部產生卡合（請參考專利M323396 (1) VIII. New description [New technical scope] This creation is a push-pull eraser, especially a long-shaped eraser that can be positioned to accurately protrude and retract from the body, and wipe the skin when used. The wipe does not accidentally retract into the body, and the user can easily replace the eraser's push-pull eraser by himself. [Prior Art] Conventionally, a push-pull eraser is a round bar-shaped eraser, and the round bar-shaped eraser is housed in a hollow cylindrical tube which is also in the shape of a round bar, and the sliding portion is used for mounting. The mounting portion of the round bar eraser and the retracting preventing portion and the sliding portion main body that are prevented from being retracted are integrally coupled, and the retracting preventing portion is connected so as to receive only the erasing mounting portion and the sliding portion body. When the pressing force is applied, the outer side of the shaft is displaced in the radial direction, and the retracting prevention portion is engaged with the engaged portion of the barrel (refer to the patent)
〔專利文獻〕日本實用新案登錄第2607 1 54號 【新型內容】 〔新型欲解決之課題〕 上述的專利文獻1，如第 5 A、B圖所示，在滑動體 300的構件中，圓棒形橡皮擦900的安裝部300a;及形成 有卡合部3 00d的縮回防止部3 00b，是利用位於軸筒100 之被卡合部200a對面側的板狀部3 00e所連結，而縮回防 (2) M323396 止部3 00b與滑動部本體3 00c，則是由板狀體3 00f所連結 。此外，如第6圖所示，在縮回防止部3 0 Ob與滑動部本 • 體300c內，具有卡合在形成於上述軸筒1〇〇的被卡合部 — 200a之卡合部400a的板簧400，且該板簧400被配置成 山峰狀。該板簧4 0 0的卡合部4 0 0 a，可通過設於板狀體 ’ 300f中央的孔300g而與形成於上述軸筒1〇〇的被卡合部 、 2〇〇a卡合。如第6圖所示，推把600的固定爪500是藉由 φ 腳部500a而固定於滑動部本體300c。 在靜止的狀態下，由於縮回防止部3 0 Ob並未承接來 自於安裝部300a或滑動部本體300c的任何擠壓力，因此 其卡合部300d並不會與被卡合部200a形成卡合狀態。而 當爲了使橡皮擦900伸出或縮回，而作用朝移動方向的作 用力時，上述的卡合部40 0a將朝軸筒1〇〇的軸心方向移 動（向軸筒100的內側縮回），而解除與被卡合部200a 之間的卡合關係，此時，由於在縮回防止部3 0 0 b僅作用 φ 單一方向的作用力，因此卡合部3 00d並不會與被卡合部 2〇〇a形成卡合狀態。在使用的狀態中，也就是指伸出橡皮 ' 擦900且抵接於紙面的狀態下，將從紙面反饋與按壓力相 * 同的反作用力，如此一來，將對橡皮擦900 (滑動體300 ' )作用朝軸筒1 〇〇縮回的力量，由於來自於縮回防止部 3 00b與卡合部400a所形成的卡合力作用於滑動部本體 3〇〇c，故使滑動部本體3 00c承受來自於縮回防止部3 00b 與卡合部400a的擠壓力，而朝半徑方向的外側形成位移 ，進而使被卡合部200a與卡合部3 00d形成卡合狀態（請 -5- M323396 (3) 參考本創作的第6圖）。根據以上的構造與動作，可防止 橡皮擦900的縮回。在使用的過程中，一旦橡皮擦從紙面 - 等處脫離，由於上述反作用力消失，因此縮回防止部3 00b . 將恢復成原本的狀態，並解除被卡合部200a與卡合部 3 00d之間的卡合狀態，而可輕易地縮回並收容橡皮擦900 〇 ' 雖然專利文獻1所揭示的技術特徵與內容可有效地解 φ 決存在於該類物品中的既有問題，但是卻仍然具以以下的 問題： 滑動體300是由：安裝部3 00a;縮回防止部3 00b; 滑動部本體3 00c;連結安裝部3 00a與縮回防止部3 00b的 板狀體3 00e ;連結縮回防止部3 00b與滑動部本體3 00c的 板狀體3 00f;以及安裝於縮回防止部300b與滑動部本體 3 00c內的金屬製板簧400，沿著水平方向配置而成。由於 滑動體3 00在水平方向上具有相當的長度，而使收納於軸 φ 筒100內的橡皮擦900的長度被迫相對地縮短，如此一來 將導致橡皮擦的可利用量大幅降低，並加速橡皮擦的更換 頻率。 " 在上述的滑動體300中，上述的板簧400爲金屬製’ ^ 而其他的構件則採用塑膠材質，故板簧400必須利用額外 的製程來生產，且增加一個將板簧4 0 0裝入縮回防止部 3 〇 〇 b與滑動部本體3 0 0 c內的組裝步驟，如此一來，不僅 零組件的數量增加，且製程也變的複雜’這些將導致製造 成本的提高。 -6- M323396 (4) 由於上述的構造，因此推出橡皮擦的推力與來自於 面的反作用力，是沿著軸筒1 〇〇的軸心方向傳遞，並藉 - 板狀體3 e、3 f發揮類似連桿的作用來改變力量的作用 . 向，進而形成或解除卡合部300d與被卡合部200a之間 卡合狀態。由於上述的力量並不是以直接傳遞的方式進 * ，而上述的卡合與解除動作無法即時產生（具有若干的 - 間差），而具有定位感不明確、及使用上的不確定感等 φ 問題。 〔解決課題之手段〕 本創作的推拉式橡皮擦，正是有鑒於上述的問題點 硏發而成的創作。 本創作的推拉式橡皮擦，是具備：本體1，該本體 具有一延伸於軸方向的 導溝1 1 ;和棒狀物2，該棒狀物2被收容於上述本 • 1內；和滑動部3，該滑動部3可挾持上述的棒狀物2， 能在上述本體1內沿著上述導溝1 1滑動；及尾栓4，該 " 栓4可安裝於上述本體1的尾端，並封閉上述本體1的 端開口，其特徵爲：上述的滑動部3是由以下構件所構 ' :一對挾持臂3 1、3 1，該挾持臂3 1、3 1是從框體3 3的 側壁3 3 a朝前方延伸所形成，並可夾取保持上述的棒狀 2 ;和框體3 3，該框體3 3是由前側壁3 3 a、後側壁3 3 b 底壁33c所一體形成，在上述底壁33c的略中央部形成 板狀的彈性體3 3 d，並於該彈性體3 3d的前緣形成有從 紙 由 方 的 行 時 的 所 體 且 尾 尾 成 前 物 及 有 底 34 M323396 (5) 壁3 3 c朝外側突出的凸出部3 3 e ;和頂壁3 4，該頂壁 爲扁平狀的板狀體，在該頂壁34的略上方形成有平行 • 該頂壁34的按壓部32，並由立柱32a連接上述的頂壁 , 與按壓部3 2，在該立柱3 2 a左右兩側的略中央部，朝水 方向延伸形成一對定位凸部32b、32b ;及一對彈性支 • 3 5、3 5，該一對彈性支柱3 5、3 5是連結於上述頂壁3 4 • 底壁33c之間，並可配合上述按壓部32的按壓，而形 φ 水平方向的彈性變形。 此外，本創作的本體2最好爲中空的長方形體，且 本體2的前端，於其中一面形成有扁平狀的按壓片12, 上述導溝1 1的兩側邊，形成有複數個鋸齒狀的卡合定 部13。 此外，本創作的棒狀物2可以是長方形體的橡皮擦 且該長方形體的橡皮擦的4周面，是形成略朝中心部凹 的圓弧面。 φ 此外，本創作的尾栓4，最好在其後端面形成4個 圓形排列的圓弧狀安全氣孔4 1。 • 此外，本創作的一對彈性支柱3 5、3 5爲：垂直方 ^ 上的中央部朝水平方向的外側鼓出之一對略呈〈字型、 ' 者半月型的彈性支柱。 〔創作的效果〕 根據本創作，由於設有一對彈性支柱3 5、3 5，當使 者對按壓部3 2施以下壓力時，可使上述的一對彈性支 於 34 平 柱 與 成 該 而 位 陷 呈 向 或 用 柱 -8- M323396 (6) 3 5、3 5朝水平方向產生變形，而使頂壁3 4及定位凸部 3 2b、3 2b下降。反之，當作用於按壓部32的下壓力解除 - 或變小時，本身爲彈性體的彈性支柱3 5、3 5將發會作用 , 將頂壁34及定位凸部32b、32b推回至原本的高度位置。 藉由以上的動作，可使定位凸部32b、32b與形成於導溝 * 1 1兩側的複數個卡合定位部1 3之間產生即時且直接的卡 - 合-釋放關係，如此一來，可定位精準地執行棒狀物（橡 φ 皮擦）2的推出及縮回，並避免在使用的過程中橡皮擦意 外縮回至本體1內。由於本創作只需利用上述一對彈性支 柱35、35而使定位凸部32b、32b垂直方向上產生變位， 相較於專利文獻1可減少構件的數量，並大幅減少滑動部 於水平方向上的長度，而上述於水平方向上所減少之長度 的量，可用來增加橡皮擦的長度，故可增加推拉式橡皮擦 的使用時間，並降低更換橡皮擦的頻率。 此外，由於本創作在本體1的前端部形成有按壓片1 2 φ ，故在使用的過程中可藉由按壓該按壓片12的方式，對 橡皮擦作用更進一步的固定，如此一來，可避免橡皮擦的 * 晃動而提高擦除的效率。 ^ 此外，由於本創作的橡皮擦爲剖面呈四角型的橡皮擦 - ，故可藉由4個角落精確地對紙面上欲擦除的細微部份進 行擦除，如此一來，可避免誤將擦除對象以外的文字或圖 形擦除的問題產生，有效地提高工作效率。 此外，由於本創作在尾栓4的後端面形成有4個安全 氣孔41，故可避免幼兒誤食尾栓4時，尾栓4阻塞氣管而 -9- M323396 (7) 導致窒息的危險。 再者，本創作的滑動部是採用塑膠材質一體成型，無 須額外的金屬零件，也無須額外的零件組裝步驟’可達成 較習知的技術更佳的功效，並能有效地降低製造上的成本 【實施方式】 以下，參考圖面的內容說明本創作之推拉式橡皮擦的 實施形態。 第1圖，是顯示本創作之推拉式橡皮擦的立體分解示 意圖。第2圖爲本創作之滑動部的說明圖。第3圖爲顯示 本創作之橡皮擦的說明圖。 如第1圖所示，本創作的推拉式橡皮擦是由：本體1 、和長條型的棒狀物（橡皮擦）2、和挾持棒狀物2的滑 動部3、及安裝於本體1後端的尾栓4所構成。 在第1圖所示的範例中，上述的本體1是剖面略呈正 方形的中空棒體，其後端設有一階梯部，上述的尾栓4便 是安裝於該階梯部而封閉本體1後端的開口。此外，在上 述本體1的其中一側面，沿著本體1的長度方向形成有長 條狀的導槽1 1，且該導槽1 1之長度方向的左右兩側邊， 以相同的節距形成有複數個卡合定位部1 3。該卡合定位部 13可與後述滑動部3的定位凸部32b、32b形成卡合，藉 此定位進準地可控制棒狀物2的伸出量，並防止棒狀物2 在使用的過程中意外的縮回。 •10- (8) M323396 此外，在本體1的其中一端側，也就是指上述階梯部 之相反側的其中一個表面，形成一個懸臂狀的按壓片1 2， - 該按壓片1 2可在伸出棒狀物2對被擦拭物的表面執行擦 . 除時，藉由使用者的按壓而將棒狀物2推下本體1的另一 側內壁後加以固定，藉此可避免擦除時朝水平方向急促的 * 往復移動而導致棒狀物2產生不必要的晃動，如此一來， - 除了可更精準地對所欲擦拭的範圍進行擦除，並能以更省 φ 力的方式來執行擦除動作，且能降低棒狀物2的耗損量。 接著，如第2圖所示，本創作的滑動部3是由：按壓 部3 2 ;框體3 3 ;頂壁3 4及一對彈性支柱3 5、3 5所一體 形成。其中上述的按壓部3 2的上表面形成略朝中央部下 方凹陷的波浪狀弧面，且在該按壓部32的下表面略中央 部，向下延伸形成有立柱32a，藉由該立柱32a使按壓部 32與後述的頂壁34形成一體，此外，在該立柱32a與頂 壁3 4形成連接的那一端側，沿著頂壁3 4的上表面朝外側 • 形成一對略呈半圓狀的定位凸部32b、32b，如同上面的說 明，該一對定位凸部32b、32b可與本體1的卡合定位部 ' 1 3形成卡合，而控制棒狀物2的伸出與縮回。不僅如此， ' 立柱32a在連接於按壓部32的那一側，則是沿著按壓部 • 3 2的下表面朝前後方向延伸形成長條狀的補強肋，該補強 肋不僅可增強按壓部3 2與立柱3 2 a之間的機械強度，更 可在上述本體1的導溝1 1內滑動時，作爲導軌使用。 此外，上述的框體3 3是由：前側壁3 3 a、後側壁3 3 b 及底壁3 3 c所一體形成。在上述前側壁3 3 a朝向前端的外 -11 - M323396 (9) 側面，形成有一對朝前方延伸而成的挾持臂3 1、3 1，該挾 持臂3 1、3 1可挾持上述棒狀物2的其中一端，進而保持 • 該棒狀物2。此外，在上述底壁3 3 c的略中央部，形成有 _ 略呈板狀的彈性體3 3 d，並在該彈性體3 3 d的其中一端部 ，也就是指連接於上述底壁33c那一端部的相反端部，朝 * 外側方向突出形成有凸出部3 3 e，當框體3 3安裝於本體1 - 的內部時，可藉由上述的凸出部33e使底壁33c與本體1 φ 的內壁（這裡是指底面側的內壁）保持一定的間隙，藉此 可減少底壁33c與上述本體1內壁之間的接觸面積，進而 大幅降低框體33在本體1內部滑動時的摩擦阻力。 如第2圖所示，上述的一對彈性支柱3 5、3 5是連接 於底壁33c與頂壁34之間，在第2圖中，該一對彈性支 柱3 5、3 5是朝外側（本體1的前後方向）鼓出而略呈< 字型，藉此可對應於來自按壓部32的下壓力而朝外側（ 本體1的前後方向）的水平方向產生變形，一旦上述的下 φ 壓力減輕或消失時，便可藉由其本身所具有的彈性恢復成 原本的狀態，重要的是，本創作的彈性支柱3 5、3 5並不 一定偏限於圖面所示的〈字型構造，只要能達與上述相同 ' 效果的構造者，均可作爲本創作之彈性支柱3 5、3 5的構 、 造。舉例來說，本創作的彈性支柱3 5、3 5，亦可爲一對略 呈半月型的彈性支柱。 而本創作的尾栓4如第1圖所示，可安裝於本體1的 上述階梯部進而封閉本體1的後端開口。除此之外，尾栓 4在其後端面形成4個呈圓形排列的圓弧狀安全氣孔4 1， -12- M323396 (10) 藉此可避免幼兒誤食尾栓4時，氣管遭尾栓4阻塞而導致 窒息的危險。 , 接著，本創作的棒狀體（橡皮擦）2，則如第3圖所 ~ 示，爲長方形的棒狀體，且其4周的表面，是形成略軸心 凹陷的弧面，進而凸顯4個角落的棱線。當欲對較小的範 " 圍進行擦除時，可利用棒狀物2的4個角落部執行小範圍 • 的細部擦除，如此一來，可避免欲擦除對象以外的文字或 φ 圖案遭到意外的擦除，並可降低橡皮擦的消耗量。 接著，針對本創作之推拉式橡皮擦的作用進行說明。 首先，如第4圖所示，在未使用狀態下，形成於滑動 部33之頂壁34上表面的定位凸部32b、32b，由於上述一 對彈性支柱3 5、3 5的作用，是卡合在導溝1 1的卡合定位 部1 3之間，此時由於按壓部3 2並未承受任何的下壓力， 因此，上述定位凸部32b、32b是確實且穩定地卡合於導 溝1 1的卡合定位部1 3之間。一旦使用者對按壓部3 2施 φ 加下壓力時，該下壓力將經由立柱32a而傳導至頂壁34， 因此頂壁34可即時且明確地朝垂直方向下降，並朝下方 " 壓縮上述的彈性支柱3 5、3 5，此時，形成時頂壁3 4上表 ’ 面的定位凸部32b、32b將由於頂壁34的下降而解除與卡 - 合定位部13之間的卡合關係。如此一來，使用者便可輕 易地將棒狀體2從本體1推出。而在推出棒狀體2的過程 中，由於上述的下壓力沿著推出的方向產生分力而略爲_ 低，一旦上述的下壓力低於彈性支柱3 5、3 5本身所具有 的彈力時，該彈性支柱3 5、3 5將藉由其本身所具有彈力 -13- (11) M323396 而將頂壁3 4朝垂直方向的上方頂起，此時，與頂壁3 4形 成一體的定位凸部32b、32b也將隨之上昇，在上述下壓 •力減輕的狀態下，由於略成半圓形的定位凸部32b、32b 、 並未完全卡合在卡合定位部1 3之間，故仍受到上述下壓 力朝推出方向之分力的影響而持續將棒狀物2推出，因此 • 定位凸部32b、32b與卡合定位部13之間的滑動磨擦力將 - 透過立柱32a，而由按壓部32直接反饋至使用者的手，進 φ 而形成清楚的定位感。一旦來自時使用者的下壓力消失時 ，將如以上所述，因爲上述彈性支柱3 5、3 5的作用而使 定位凸部32b、32b確實且穩定地卡合於導溝1 1的卡合定 位部1 3之間完成定位。 接著，針對棒狀物2的更換方式進行說明。 當欲更換棒狀物2時，可採用以下的兩種方式來執行 〇 第1種方法，是先取下安裝於本體1後端的尾栓4， φ 再壓下按壓部3 2並直接將滑動部3朝本體1的後側推出 ，直到棒狀物2完全從本體1內分離即可，接著解除棒狀 ~ 物2與挾持臂3 1、3 1之間的挾持關係便可更換新的棒狀 - 物。在更新棒狀物之後，只需反向執行上述的步驟便可完 - 成棒狀物的更換。 第2種方法，是在不分解任何構件的狀態下，將滑動 部3推到導軌1 1最前端的位置使棒狀物2從本體1的前 端開口伸出，再直接以手抓取棒狀物2並將其從本體1拉 出即可，並在滑動部3定位停止於導軌1 1最前端位置的 -14- M323396 (12) 狀態下，將新的棒狀物2的被挾持端插入本體1內，直到 棒狀物2嵌入挾持臂3 1、3 1後即完成棒狀物2的更換。 由於本創作中的棒狀物（橡皮擦）2與用來挾持棒狀物2 的一對挾持臂3 1、3 1均具有彈性，故也能採用上述的第2 種方法進行更換。 _ 以上是針對本創作的推拉式橡皮擦所做的說明，但是 - 本創作的推拉式橡皮擦卻不侷限於上述的說明，舉例來說 B ，雖然在上述的說明中，用來挾持棒狀物2的一對挾持臂 3 1、3 1是從前側壁3 3 a之水平方向的兩側邊緣所延伸而成 ，但亦可從前側壁3 3 a之垂直方向的左右兩側邊緣所延伸 而成。此外，雖然上述說明是針對剖面呈四邊型的棒狀物 2進行說明，但上述的棒狀物2亦可爲剖面呈三角型、五 角型等的多角型棒狀物。同樣地，本體1也可以是剖面呈 三角型、五角型等的多角型中空棒狀體。此外，雖然在上 述的說明中，是針對棒狀物2爲橡皮擦的實施形態進行說 φ 明，但是上述的棒狀物2也可以是口紅、蠟筆、粉筆等的 " 棒狀物，只要在不脫離本創作之創作思想的範圍內，可針 " 對上述各構件的配置位置、配置關係等做出各種的設計變 • 更。 【圖式簡單說明】 第1圖：爲顯示本創作之推拉式橡皮擦的立體分解示 意圖。 第2圖：爲顯示本創作之滑動部的說明圖。 -15- M323396 (13) 第3圖：爲顯示本創作之橡皮擦的說明圖。 第4圖：是用來說明本創作之組合關係的剖面圖。 第5圖：爲顯示習知技術中滑動體的說明圖’其中A 爲俯視圖，B爲前視圖。 第6圖：爲說明習知技術之組合關係的說明圖。 . 【主要元件之符號說明】 1« ~~Jr-1 1¾¾ _ •本體 2 :棒狀物 3 :滑動部 4 :尾栓 U :導溝 12 :按壓片 1 3 :卡合定位部 3 1、3 1 :挾持臂 φ 3 2 :按壓部 3 2 a :立柱 _ 32b、32b :定位凸部 ， 33 :框體 ^ 3 3 a :前側壁 3 3 b :後側壁 33c :底壁 33d :彈性體 3 3 e :凸出部 -16 - M323396 (14) 3 4 :頂壁 3 5、3 5 :彈性支柱 4 1 :安全氣孔 1 00 :軸筒 200a :被卡合部 ' 3 0 0 :滑動體 、 3 00a ：安裝部 p 3 00b :縮回防止部 3 00c :滑動部本體 3 0 0 d :卡合部 3 0 0 e :板狀體 3 00f :板狀體 300g :孔 400 :板簧 400a ：卡合部 φ 5 00 :固定爪 5 00a :腳部 • 6 0 0 :推把 900 :圓棒形橡皮擦[Patent Document] Japanese Utility Model Registration No. 2607 1 54 [New Content] [New Problem to be Solved] The above-described Patent Document 1, as shown in Figs. 5A and B, is a round bar in the member of the slider 300. The attachment portion 300a of the eraser 900 and the retraction prevention portion 3 00b in which the engagement portion 00d is formed are connected by the plate-like portion 3 00e located on the opposite side of the engaged portion 200a of the barrel 100. Back protection (2) The M323396 stop 3 00b and the sliding portion body 3 00c are connected by the plate-shaped body 3 00f. Further, as shown in Fig. 6, the retracting prevention portion 30ob and the sliding portion body 300c are engaged with the engaging portion 400a of the engaged portion 200a formed in the above-mentioned barrel 1b. The leaf spring 400 is disposed, and the leaf spring 400 is configured in a mountain shape. The engaging portion 400a of the leaf spring 400 can be engaged with the engaged portion and the 2a formed in the shaft 1〇〇 by the hole 300g provided in the center of the plate-shaped body 300f. . As shown in Fig. 6, the fixed claw 500 of the push handle 600 is fixed to the sliding portion main body 300c by the φ leg portion 500a. In the stationary state, since the retracting prevention portion 3 0 Ob does not receive any pressing force from the mounting portion 300a or the sliding portion body 300c, the engaging portion 300d does not form a card with the engaged portion 200a. State. When the urging force in the moving direction is applied in order to extend or retract the eraser 900, the engaging portion 40a will move toward the axial direction of the barrel 1 (to the inside of the barrel 100). Then, the engagement relationship with the engaged portion 200a is released. At this time, since only the force of φ in the single direction acts on the retraction preventing portion 3 0 0 b, the engaging portion 3 00d does not The engaged portion 2〇〇a forms an engaged state. In the state of use, that is, in the state where the rubber eraser 900 is rubbed and abutted against the paper surface, the reaction force corresponding to the pressing force is fed back from the paper surface, so that the eraser 900 (sliding body) 300 ') acts to retract the shaft cylinder 1 and the sliding portion body 3 is caused by the engaging force from the retracting prevention portion 3 00b and the engaging portion 400a acting on the sliding portion body 3〇〇c. 00c receives the pressing force from the retracting prevention portion 3 00b and the engaging portion 400a, and is displaced toward the outer side in the radial direction, and further, the engaged portion 200a and the engaging portion 3 00d are engaged with each other (please -5 - M323396 (3) Refer to Figure 6 of this creation). According to the above configuration and action, the retraction of the eraser 900 can be prevented. In the process of use, once the eraser is detached from the paper surface or the like, the above-mentioned reaction force disappears, so that the retraction preventing portion 3 00b will return to the original state, and the engaged portion 200a and the engaging portion 3 00d are released. The state of engagement between the two can be easily retracted and accommodated in the eraser 900 〇'. Although the technical features and contents disclosed in Patent Document 1 can effectively solve the problems existing in such articles, There are still the following problems: The sliding body 300 is composed of: a mounting portion 300a; a retracting preventing portion 3 00b; a sliding portion main body 3 00c; a plate-like body 3 00e that connects the mounting portion 3 00a and the retracting preventing portion 3 00b; The plate-shaped body 3 00f that connects the retraction preventing portion 3 00b and the sliding portion main body 3 00c; and the metal leaf spring 400 attached to the retracting prevention portion 300b and the sliding portion main body 3 00c are arranged in the horizontal direction. Since the slider 300 has a considerable length in the horizontal direction, the length of the eraser 900 accommodated in the shaft φ cylinder 100 is forced to be relatively shortened, which causes the usable amount of the eraser to be greatly reduced, and Speed up the replacement of the eraser. " In the above sliding body 300, the above-mentioned leaf spring 400 is made of metal '^ and the other members are made of plastic material, so the leaf spring 400 must be produced by an additional process, and a new spring will be added. The assembly steps in the retraction preventing portion 3 〇〇b and the sliding portion main body 3 0 0 c are loaded, so that not only the number of components is increased, but also the manufacturing process becomes complicated 'these will result in an increase in manufacturing cost. -6- M323396 (4) Due to the above structure, the thrust of the eraser and the reaction force from the surface are transmitted along the axis of the shaft 1 ,, and the plate-like body 3 e, 3 f acts like a link to change the action of the force. Towards, the engagement state between the engaging portion 300d and the engaged portion 200a is formed or released. Since the above-mentioned force is not directly transmitted in the manner of *, the above-mentioned engagement and release actions cannot be instantaneously generated (having a certain number of --difference), and the positioning feeling is not clear, and the sense of uncertainty in use is φ. problem. [Means for Solving the Problem] The push-pull eraser of this creation is created by the above-mentioned problems. The push-pull eraser of the present invention comprises: a body 1 having a guide groove 1 1 extending in the axial direction; and a rod 2, the rod 2 being housed in the above-mentioned 1; and sliding The sliding portion 3 can hold the above-mentioned rod 2 and can slide along the guiding groove 11 in the body 1; and the tail plug 4 can be attached to the tail end of the body 1 And closing the end opening of the body 1 , wherein the sliding portion 3 is constructed by the following members: a pair of holding arms 3 1 , 3 1 , the holding arms 3 1 , 31 are from the frame 3 The side wall 3 3 a of the 3 is formed to extend forward, and the rod 2 can be sandwiched and held; and the frame 3 3 is formed by the front side wall 3 3 a and the rear side wall 3 3 b bottom wall 33c The plate body-shaped elastic body 3 3 d is formed at a substantially central portion of the bottom wall 33c, and the front end of the elastic body 3 3d is formed with a body from the side of the paper and the tail end is formed. And a bottom 34 M323396 (5) a projection 3 3 e of the wall 3 3 c protruding outward; and a top wall 34, the top wall being a flat plate-like body, slightly above the top wall 34 The pressing portion 32 of the top wall 34 is connected to the top wall by the column 32a, and the pressing portion 32 extends in the water direction at a slight central portion on the left and right sides of the column 3 2 a to form a pair. Positioning convex portions 32b, 32b; and a pair of elastic legs 35, 35, which are coupled between the top wall 34 and the bottom wall 33c, and can be matched with the pressing portion 32 pressing, while the shape φ is elastically deformed in the horizontal direction. In addition, the body 2 of the present invention is preferably a hollow rectangular body, and a front end of the body 2 is formed with a flat pressing piece 12 on one side thereof, and a plurality of zigzag shapes are formed on both sides of the guiding groove 11 The engagement portion 13 is provided. Further, the rod 2 of the present invention may be a rectangular body eraser and the four-sided surface of the eraser of the rectangular body is a circular arc surface which is slightly concave toward the center portion. φ In addition, the tail plug 4 of the present invention preferably has four circular arc-shaped safety air holes 4 1 formed on the rear end surface thereof. • In addition, the pair of elastic struts 3 5 and 35 of the present creation are: one of the vertical swells of the central portion on the vertical side to the outer side of the horizontal direction, and the elastic struts of the semi-moon type. [Effects of Creation] According to the present creation, since a pair of elastic struts 35, 35 are provided, when the urging person applies the following pressure to the pressing portion 3 2, the above-mentioned pair of elastic members can be supported by 34 flat posts. The trapping direction or the column -8-M323396 (6) 3 5, 3 5 is deformed in the horizontal direction, and the top wall 34 and the positioning convex portions 3 2b, 3 2b are lowered. On the other hand, when the downward pressure for the pressing portion 32 is released or becomes smaller, the elastic struts 35, 35 which are elastic bodies themselves will act as a function to push the top wall 34 and the positioning convex portions 32b, 32b back to the original Height position. By the above operation, an instantaneous and direct card-to-release relationship can be generated between the positioning convex portions 32b and 32b and the plurality of engagement positioning portions 13 formed on both sides of the guide groove *1. The positioning and retraction of the rod (rubber φ smear) 2 can be accurately performed, and the eraser is accidentally retracted into the body 1 during use. Since the present invention only needs to use the pair of elastic stays 35, 35 to cause the positioning convex portions 32b, 32b to be displaced in the vertical direction, the number of members can be reduced as compared with Patent Document 1, and the sliding portion can be greatly reduced in the horizontal direction. The length, and the amount of the reduced length in the horizontal direction described above, can be used to increase the length of the eraser, thereby increasing the use time of the push-pull eraser and reducing the frequency of replacing the eraser. In addition, since the pressing piece 1 2 φ is formed at the front end portion of the body 1 in the present invention, the eraser can be further fixed by pressing the pressing piece 12 during use, and thus, Avoid the eraser* shaking to increase the efficiency of erasing. ^ In addition, since the eraser of this creation is a four-corner type eraser--, it is possible to accurately erase the fine parts to be erased on the paper by four corners, so that mistakes can be avoided. The problem of erasing text or graphics other than the erased object is generated, and the work efficiency is effectively improved. In addition, since the present invention has four safety air holes 41 formed in the rear end surface of the tail plug 4, it is possible to prevent the child from inadvertently eating the tail plug 4, and the tail plug 4 blocks the air tube and the -9-M323396 (7) causes the risk of suffocation. In addition, the sliding part of the creation is made of plastic material, no need for additional metal parts, and no additional parts assembly steps can be achieved, which can achieve better performance than the known technology, and can effectively reduce the manufacturing cost. [Embodiment] Hereinafter, an embodiment of the push-pull eraser of the present invention will be described with reference to the contents of the drawings. Fig. 1 is a perspective exploded view showing the push-pull eraser of the present invention. Fig. 2 is an explanatory view of the sliding portion of the creation. Figure 3 is an explanatory view showing the eraser of this creation. As shown in Fig. 1, the push-pull eraser of the present invention is composed of: a body 1 and a long rod (eraser) 2, and a sliding portion 3 for holding the rod 2, and is attached to the body 1 The tail plug 4 of the rear end is composed. In the example shown in FIG. 1, the body 1 is a hollow square body having a substantially square cross section, and a rear end portion is provided with a stepped portion. The tail plug 4 is attached to the step portion to close the rear end of the body 1. Opening. Further, on one side surface of the main body 1, an elongated guide groove 1 1 is formed along the longitudinal direction of the main body 1, and the left and right sides of the guide groove 11 in the longitudinal direction are formed at the same pitch. There are a plurality of engagement positioning portions 13 . The engagement positioning portion 13 can be engaged with the positioning convex portions 32b, 32b of the sliding portion 3 to be described later, whereby the positioning can control the amount of protrusion of the rod 2 and prevent the rod 2 from being used. Unexpected retraction. • 10- (8) M323396 In addition, on one end side of the body 1, that is, on one of the opposite sides of the step portion, a cantilever-shaped pressing piece 1 2 is formed, - the pressing piece 1 2 can be extended The stick 2 performs rubbing on the surface of the object to be wiped. When the rod 2 is pushed down by the user's pressing, the rod 2 is pushed down and fixed on the other side of the body, thereby avoiding erasure. The reciprocating movement in the horizontal direction causes the rod 2 to be unnecessarily shaken, thus, in addition to being able to erase the range to be wiped more accurately, and to save the force in a more force-saving manner. The erasing action is performed and the amount of wear of the rod 2 can be reduced. Next, as shown in Fig. 2, the sliding portion 3 of the present invention is integrally formed by a pressing portion 3 2 , a frame 3 3 , a top wall 34 and a pair of elastic stays 35, 35. The upper surface of the pressing portion 32 has a wavy curved surface slightly recessed downward toward the central portion, and a column 32a is formed downwardly at a lower central portion of the lower portion of the pressing portion 32, and the column 32a is formed by the column 32a. The pressing portion 32 is integrally formed with a top wall 34 to be described later, and the one end side where the upright column 32a and the top wall 34 are connected is formed, and the upper surface of the top wall 34 is outwardly formed to form a pair of slightly semicircular shapes. The positioning projections 32b, 32b, as described above, can engage with the engagement positioning portion '13 of the body 1 to control the extension and retraction of the rod 2. Further, the side of the column 32a that is connected to the pressing portion 32 extends along the lower surface of the pressing portion 3 2 in the front-rear direction to form an elongated reinforcing rib that not only enhances the pressing portion 3 The mechanical strength between the 2 and the column 3 2 a can be used as a guide rail when sliding in the guide groove 1 1 of the body 1 described above. Further, the above-described frame body 3 3 is integrally formed by the front side wall 3 3 a, the rear side wall 3 3 b and the bottom wall 3 3 c. On the side of the outer side -11 - M323396 (9) of the front side wall 3 3 a facing the front end, a pair of holding arms 3 1 and 3 1 extending forward are formed, and the holding arms 3 1 and 3 1 can hold the rod shape One end of the object 2, which in turn holds the rod 2. Further, in a slightly central portion of the bottom wall 3 3 c, a slightly plate-shaped elastic body 3 3 d is formed, and one end portion of the elastic body 3 3 d is connected to the bottom wall 33c. The opposite end portion of the one end portion is formed with a protruding portion 3 3 e protruding toward the outer side of the body. When the frame body 3 3 is mounted inside the body 1 -, the bottom wall 33c can be made by the above-mentioned protruding portion 33e The inner wall of the body 1 φ (here, the inner wall on the bottom side) maintains a certain gap, thereby reducing the contact area between the bottom wall 33c and the inner wall of the body 1, thereby greatly reducing the frame 33 inside the body 1. Frictional resistance when sliding. As shown in Fig. 2, the pair of elastic struts 35, 35 are connected between the bottom wall 33c and the top wall 34. In Fig. 2, the pair of elastic struts 35, 35 are outwardly (the front-rear direction of the main body 1) is bulged to be slightly < font shape, whereby the horizontal direction of the outer side (the front-rear direction of the main body 1) can be deformed corresponding to the downward pressure from the pressing portion 32, once the above-mentioned lower φ When the pressure is reduced or disappeared, it can be restored to its original state by its own elasticity. What is important is that the elastic pillars 35, 35 of the creation are not necessarily limited to the "font structure" shown in the figure. As long as it can achieve the same effect as the above, it can be used as the structure and manufacture of the elastic pillars 3 5 and 3 5 of this creation. For example, the elastic struts 35, 35 of the creation may also be a pair of slightly half-moon-shaped elastic struts. As shown in Fig. 1, the tail plug 4 of the present invention can be attached to the step portion of the body 1 to close the rear end opening of the body 1. In addition, the tail bolt 4 forms four arc-shaped safety air holes 4 1, -12- M323396 (10) arranged in a circular shape on the rear end surface thereof, thereby preventing the tail pipe from being tailed when the child accidentally eats the tail plug 4 The danger of suffocation caused by the blockage of the plug 4. Next, the rod-shaped body (eraser) 2 of the present invention is a rectangular rod-like body as shown in Fig. 3, and the surface of the four-week surface is a curved surface which is formed by a slight axial depression, thereby highlighting 4 corner ridges. When it is desired to erase a small fan, the four corners of the bar 2 can be used to perform a small range of detail erasure, so that characters other than the object to be erased or φ can be avoided. The pattern is accidentally erased and the eraser consumption is reduced. Next, the action of the push-pull eraser of the present invention will be described. First, as shown in Fig. 4, in the unused state, the positioning convex portions 32b, 32b formed on the upper surface of the top wall 34 of the sliding portion 33 are cards due to the action of the pair of elastic legs 35, 35. Between the engagement positioning portions 13 of the guide groove 1 1 , at this time, since the pressing portion 32 does not receive any downward pressure, the positioning convex portions 32 b and 32 b are reliably and stably engaged with the guide groove. The engagement position of the 1 1 is between 1 and 3 . Once the user applies φ to the pressing portion 32, the downward pressure will be transmitted to the top wall 34 via the column 32a, so that the top wall 34 can be immediately and unambiguously lowered in the vertical direction, and the lower side is compressed downward. The elastic strut 3 5, 35, at this time, the positioning convex portions 32b, 32b on the top surface of the top wall 34 are released from the engagement between the card-joining portion 13 due to the lowering of the top wall 34. relationship. In this way, the user can easily push the rod 2 out of the body 1. In the process of pushing out the rod 2, since the above-mentioned downward pressure generates a component force in the direction of pushing out, it is slightly lower, and when the above-mentioned lowering pressure is lower than the elastic force of the elastic strut 35, 35 itself, The elastic strut 35, 35 will lift the top wall 34 upward in the vertical direction by its own elastic force -13-(11) M323396, and at this time, form an integral position with the top wall 34. The convex portions 32b and 32b also rise in the same manner, and the semi-circular positioning convex portions 32b and 32b are not completely engaged between the engaging positioning portions 13 in the state in which the lower pressing force is reduced. Therefore, the rod 2 is continuously pushed out by the force of the downward force toward the pushing direction, so that the sliding friction between the positioning protrusions 32b, 32b and the engaging positioning portion 13 will pass through the column 32a. On the other hand, the pressing portion 32 directly feeds back the user's hand and enters φ to form a clear sense of positioning. When the downward pressure of the user from the time disappears, as described above, the positioning convex portions 32b, 32b are surely and stably engaged with the guide groove 1 1 by the action of the elastic stays 35, 35. The positioning is completed between the positioning portions 13. Next, the manner of replacing the rod 2 will be described. When the rod 2 is to be replaced, the first method can be performed in the following two ways: first, the tail plug 4 attached to the rear end of the body 1 is removed, φ and the pressing portion 3 2 is pressed again, and the sliding portion is directly pressed. 3 Pushing out toward the rear side of the body 1 until the rod 2 is completely separated from the body 1, and then releasing the stick relationship between the rod 2 and the holding arms 3 1 and 3 1 can replace the new rod shape - Things. After updating the rod, it is only necessary to reverse the above steps to complete the replacement of the rod. In the second method, the sliding portion 3 is pushed to the position of the foremost end of the guide rail 1 1 without disassembling any member, so that the rod 2 protrudes from the front end opening of the main body 1, and the rod is directly grasped by the hand. The object 2 is pulled out from the body 1, and the held end of the new rod 2 is inserted in the state of the -14-M323396 (12) where the sliding portion 3 is positioned to stop at the foremost end position of the guide rail 1 1 . In the body 1, the replacement of the rod 2 is completed after the rod 2 is inserted into the holding arms 3 1 and 31. Since the rod (eraser) 2 in the present creation and the pair of holding arms 3 1 and 3 1 for gripping the rod 2 are both elastic, they can be replaced by the second method described above. _ The above is a description of the push-pull eraser for this creation, but - the push-pull eraser of this creation is not limited to the above description, for example B, although in the above description, it is used to hold the stick The pair of holding arms 3 1 and 3 1 of the object 2 are formed by extending from both side edges of the front side wall 3 3 a in the horizontal direction, but may also extend from the left and right side edges of the front side wall 3 3 a in the vertical direction. . Further, although the above description has been made with respect to the rod 2 having a quadrangular cross section, the above-mentioned rod 2 may be a polygonal rod having a triangular cross section or a pentagon shape. Similarly, the main body 1 may be a polygonal hollow rod-like body having a triangular or pentagonal cross section. Further, in the above description, the embodiment in which the rod 2 is an eraser is φ, but the rod 2 described above may be a stick of a lipstick, a crayon, a chalk, or the like, as long as Insofar as it does not deviate from the creative ideas of this creation, it is possible to make various design changes to the arrangement positions and arrangement relationships of the above-mentioned components. [Simple description of the drawing] Fig. 1 is a schematic exploded view showing the push-pull eraser of the present creation. Fig. 2 is an explanatory view showing the sliding portion of the present creation. -15- M323396 (13) Fig. 3: An explanatory diagram showing the eraser of this creation. Figure 4: is a cross-sectional view used to illustrate the combined relationship of the creation. Fig. 5 is an explanatory view showing a sliding body in the prior art' where A is a plan view and B is a front view. Fig. 6 is an explanatory diagram for explaining a combination relationship of the prior art. [Description of Symbols of Main Components] 1« ~~Jr-1 13⁄43⁄4 _ • Body 2: Rod 3: Slide 4: Tail Bolt U: Guide groove 12: Pressing piece 1 3 : Engagement positioning part 3 1、 3 1 : holding arm φ 3 2 : pressing portion 3 2 a : column _ 32b, 32b : positioning convex portion, 33 : frame body ^ 3 3 a : front side wall 3 3 b : rear side wall 33c: bottom wall 33d: elastic body 3 3 e : Projection - 16 - M323396 (14) 3 4 : Top wall 3 5, 3 5 : Elastic support 4 1 : Safety air hole 1 00 : Shaft cylinder 200a : Engaged portion ' 3 0 0 : Sliding body 3 00a : mounting portion p 3 00b : retracting prevention portion 3 00c : sliding portion main body 3 0 0 d : engaging portion 3 0 0 e : plate-shaped body 3 00f : plate-shaped body 300g : hole 400 : leaf spring 400a : Engagement part φ 5 00 : Fixed claw 5 00a : Foot part • 6 0 0 : Push handle 900 : Round bar eraser