201139161 六、發明說明 【發明所屬之技術領域】 本發明是關於一種，利用書寫壓，可使筆芯（更換芯 )旋轉的自動鉛筆。 【先前技術】 利用自動鉛筆進行書寫時，一般不會在軸筒相對於書 寫面（紙面）呈正交狀態下進行使用，而常以相對於書寫 面在少許傾斜的狀態下進行使用。如此，以傾斜軸筒的狀 態進行書寫時’由於持續書寫的過程中筆芯會有偏摩耗（ 非對稱磨耗）的情形，所以會發生所謂描繪線與開始時相 比變粗的情況。又不只有描繪線的粗細改變，由於相對於 書寫面的筆芯的接觸面積改變，所以持續書寫的過程中， 描繪線的濃淡也會發生變化（描繪線變薄）的現象。 迴避前述的問題時，由於若不斷的旋轉軸筒進行書寫 時，則筆芯的尖側會依序與紙面接觸並被書寫，所以可避 免描繪線在持續書寫的過程中變粗等的問題。然而，使軸 筒不斷的旋轉來進行書寫時，隨著書寫的進行，會發生所 謂必須進改變軸筒拿法的操作的麻煩，而使書寫的效率顯 著下降。 此時，軸筒的外裝形成圓筒狀的時候，一面改變軸筒 的拿法依序旋轉進行書寫並不是不可能的，但其外装不是 圓筒狀，在中腹設有突起的設計，或爲側按式的自動鉛筆 的時候，如前述使軸筒依序旋轉的方式來改變拿法進行書 -5- 201139161 寫的方式也變的困難。 於此，爲了消除前述這類的問題，具備有構成把持筆 芯的夾頭受到書寫壓後退，並利用該後退動作，與前述夾 頭一起使前述筆芯旋轉的旋轉驅動機構之自動鉛筆例如被 揭示在日本特許第3 882272號公報、日本特許第3 8 8 53 1 5號 公報等。 然而，根據前述的先行技術文獻所揭示的自動鉛筆， 在軸筒內，縱突起與縱溝交替配置，具備有跨越該等的傾 斜面的凸輪部形成爲環狀。又，在軸筒內收容有在其周向 形成間斷性的突起的轉子。 然後，利用藉由使筆芯大幅後退，推起前述轉子，使 轉子的突起擱在被形成在軸筒內的前述凸輪部的縱突起， 經由前述傾斜面，落入到隔壁的縱溝的方式達成轉子的旋 轉，而構成將前述轉子的旋轉運動傳達到芯盒，使筆芯旋 轉驅動。這是利用在按壓式原子筆等常被使用的眾所周知 的雙重按壓（Kern knock)機構。 根據前述的構成的自動鉛筆，使轉子旋轉時，必須要 有使轉子側的突起跨過被形成在軸筒內的縱突起所需要的 筆芯的大的後退衝程。因此，因書寫造成芯非對稱磨耗時 ，必須要有與將平常的書寫壓以上的壓力施加在筆芯，讓 轉子在軸筒內後退的方式，使轉子側的突起越過被形成在 軸筒內的前述縱突起的書寫不同的操作》由於該操作必須 在筆芯每次的非對稱磨耗過程中比較頻繁的進行，所以存 在著所謂書寫的效率降低的問題。 201139161 於此’本案申請人爲了解除前述的先行技術文献所揭 示的自動鉛筆的問題點，在日本特願2007-339074及日本 特願2007-339〇75中，申請了利用書寫過程中的筆芯的稍 微的後退及前進動作（這個在以下也稱爲緩衝動作。）， 使筆芯旋轉驅動的自動鉛筆。 前述申請的自動鉛筆中，在形成圓筒狀的轉子的各端 面形成有第1與第2凸輪面，藉由書寫壓造成的前述轉子的 後退動作’使前述第1凸輪面與第1固定凸輪面抵接並咬合 。又，藉由書寫壓的解除造成轉子的前進動作，使前述第 2的凸輪面與第2固定凸輪面抵接並咬合。 然後，藉由前述各凸輪的往復的咬合，使轉子朝一方 向依序轉動。而構成該旋轉動作經由把持筆芯的夾頭傳達 到筆芯。 根據前述的構成’將書寫過程中的芯的後退量（緩衝 動作量）設定在0.05〜0.5 mm程度，可使筆芯依序旋轉驅 動，藉此可提供不會讓書寫的效率降低的實用性優的自動 鉛筆。 另一方面’前述的構成的自動給筆中，因爲書寫造成 芯伴隨著前述的緩衝動作，所以筆芯的後退動作中，會一 直有著「不紮實」的觸感’又於緩衝彈簧造成的筆芯的返 回動作中也會發生「卡卡」的觸感。 爲了使這類的獨特的觸感造成的不順感的發生緩和， 本案的申請人已提案有一種’將黏著性媒體（黏著性油脂 )介裝在與筆芯一起朝軸向移動的可動構件；以及與前述 201139161 可動構件的移動面對峙的固定構件之間’在筆芯的緩衝動 作賦予阻尼功能的自動鉛筆。這個申請被揭示在前述的曰 本特願 2007-339075 (國際公開 WO2009/84446號）。 【發明內容】 然而，即使是具備有筆芯的旋轉驅動機構的這種的自 動鉛筆中，也必謀求可因應顧客的需的多樣化，例如可考 慮採用在軸简的前端部側配置由比較厚壁的大的被覆橡膠 所形成的握柄部的構成；或在軸筒的側壁配置筆芯連續釋 出用的側按壓構件的構成。此時，必須要有將前述的旋轉 驅動機構配置在軸筒的後半部側，並以比較長尺寸的旋轉 中繼管連接旋轉驅動機構與把持筆芯的夾頭部之間等的構 造》 如前述，尤其是將旋轉驅動機構配置在軸筒的後部附 近的構成中，由於必須要有長尺寸的旋轉中繼管，所以會 大幅受到構成旋轉驅動機構的各零件的成形上的誤差或其 組裝誤差，以及包括中繼管或夾頭等的筆芯的旋轉驅動部 分的相互的連接所產生的偏心等的影響，而使保證筆芯的 正常的旋轉驅動動作變的困難》 本發明是提供一種，著眼於具備有筆芯的旋轉驅動機 構的自動鉛筆的前述的特有的問題點所硏發者，即使例如 使用尺寸長的旋轉中繼管，也可能克服由前述的各種的要 因所發生的障礙，並可保證筆芯的正常的旋轉驅動動作的 自動鉛筆作爲第1個課題》 -8- 201139161 另一方面，在筆芯的緩衝動作產生阻尼功能的黏著性 油脂，是被塗抹在作爲前述的可動構件的力矩消除器的周 面，並將該狀態的力矩消除器以沿著固定構件的圓筒狀的 擋止構件的內周面安裝的方式被組裝。 因此，根據前述的黏著性油脂的塗布及塡充操作，即 使對於力矩消除器的周面經常以大致同量的黏著性油脂進 行附著，將力矩消除器沿著擋止構件的內周面進行安裝時 ，也會有所謂因兩者的組裝方法的些許的不同改變被塡充 在兩者間的潤滑油的量的問題。 亦即，被塡充在前述力矩消除器與前述擋止構件之間 的間隙的黏著性油脂的量不能穩定，也不能保證在兩者的 間隙的全域塡充有黏著性油脂。因此，會有所謂在前述阻 尼功能容易發生不均，在功能上穩定性欠佳的問題。 本發明，是著眼於具備有筆芯的旋轉驅動機構的自動 鉛筆的前述阻尼功能的問題點所硏發者，尤其是提供一種 ，不需要熟練容易進行黏著性油脂的塡充操作，而且可穩 定且確實執行塡充到兩者的間隙的黏著性油脂的塡充量， 在阻尼功能上不會產生不均的自動鉛筆作爲第2個課題。 解決前述的第1個課題用所硏發的本發明的自動鉛筆 ，係藉由依據按壓構件的按壓操作的夾頭的前後動進行筆 芯的解除與把持，而構成可朝前方連續釋出前述筆芯，並 且，構成前述夾頭把持前述筆芯的狀態下，可前後動及可 以軸芯爲中心旋轉的方式被收容在前述軸筒內的自動鉛筆 ，其特徵爲：將可將軸向的往復運動轉換成旋轉運動的旋 -9 - 201139161 轉驅動機構收容在前述軸筒內’並且經由可撓性的素材所 成形的中繼構件連接前述旋轉驅動機構與前述夾頭，藉由 該中繼構件，將依據施加在被前述夾頭所把持的筆芯的書 寫壓所造成的前後動作爲往復運動對前述旋轉驅動機構進 行傳達，並且構成將前述旋轉驅動機構所生成的旋轉運動 傳達到夾頭。 此時，前述中繼構件是以同軸狀被配置在與夾頭的後 端部連接的芯盒的外側爲理想。 而且，前述旋轉驅動機構的理想的一個形態中，在前 述旋轉驅動機構具備有連接有前述中繼構件的轉子，該轉 子是形成圓環狀，在其軸向的一端面及另一端面分別形成 有第1與第2的凸輪面，並且具備有分別與前述第1與第2的 凸輪面對峙的第1與第2的固定凸輪面，藉由前述書寫壓造 成的前述夾頭的後退動作，前述圓環狀轉子的第1凸輪面 與前述第1的固定凸輪面抵接並咬合，藉由前述書寫壓的 解除構成前述轉子的第2凸輪面與前述第2固定凸輪面抵接 並咬合，前述轉子側的第1凸輪面與前述第1固定凸輪面咬 合的狀態下，前述轉子側的第2凸輪面與前述第2固定凸輪 面，被設定成在軸向相對於凸輪的一齒位相偏離的關係， 前述轉子側的第2凸輪面與前述第2固定凸輪面咬合的狀態 下，前述轉子側的第1凸輪面與前述第1固定凸輪面被設定 成在軸向相對於凸輪的一齒呈位相偏離的關係。 此時，在前述旋轉驅動機構具備有：在解除書寫壓的 狀態下，彈推使前述轉子的第2凸輪面抵接在前述第2固定 -10- 201139161 凸輪面成爲咬合的狀態的緩衝彈簧爲理想。 再者’除了前述的構成，構成介裝在前述旋轉驅動機 構的前述轉子的後端部與前述緩衝彈簧之間，使滑動在與 前述轉子的後端部之間產生的力矩消除器，阻止前述轉子 的旋轉運動傳達到前述緩衝彈簧的情況爲理想。 另一方面’爲了解決前述的第2個課題所硏發的該發 明的自動鉛筆，係藉由依據按壓構件的按壓操作的夾頭的 前後動進行筆芯的解除與把持，而構成可朝前方連續釋出 前述筆芯，並且，構成前述夾頭把持前述筆芯的狀態下， 可前後動及可以軸芯爲中心進行旋轉的方式被收容在前述 軸筒內，並且具備依據前述筆芯的書寫壓造成前述夾頭的 前後動，使被把持在前述夾頭被的筆芯旋轉驅動的旋轉驅 動機構之自動鉛筆，其特徵爲：依據前述筆芯的書寫壓的 前述夾頭的前後動，朝軸向移動動作的可動構件以及與前 述可動構件的移動面對峙的固定構件之間介裝有黏著性媒 體，構成藉由前述黏著性媒體在前述筆芯的後退及前進動 作產生阻尼功能，在前述固定構件的側壁，相對於前述固 定構件，前述可動構件位在第1個相對位置的狀態下，作 成在前述固定構件與前述可動構件之間形成有與前述注入 孔連通的空間部，相對於前述固定構件，前述可動構件爲 在第2個相對位置的狀態下，藉由前述可動構件遮斷前述 注入孔與空間部，形成前述空間部略密閉狀態’相對於前 述固定構件，前述可動構件位在第3個相對位置的狀態下 ，構成縮小略密閉的前述空間部的容積。 -11 - 201139161 此時，形成有可注入前述黏著性媒體的注入孔爲理想 。又，理想的是前述固定構件是由將前述可動構件配置在 內側，可滑動地支撐該可動構件的筒狀構件所構成’並且 在前述可動構件形成有沿著外周面連續的溝部，相對於前 述固定構件，可動構件位在前述第3個相對位置的狀態下 ，構成貯留在前述空間部內的黏著性媒體，可經由前述溝 部浸入到前述可動構件與固定構件之間的間隙。 除此之外，相對於前述固定構件，可動構件位在前述 第3個相對位置的狀態下，作成形成在前述可動構件的前 述溝部與形成在前述固定構件與前述可動構件之間的第2 個空間部連通的構成爲理想。 此時，一個理想的形態中，將前述力矩消除器作爲與 夾頭一起在軸向移動動作的前述可動構件來利用，可將前 述力矩消除器作爲兼具前述阻尼功能的一部分的構成。 根據前述的本發明的自動鉛筆，具備有承受書寫壓， 使轉子旋轉驅動的旋轉驅動機構，前述轉子的旋轉運動是 經由夾頭傳達到筆芯。因此，書寫動作的過程中，由於筆 芯會慢慢受到旋轉驅動，所以可防止持續書寫的過程中的 筆芯的偏摩耗的情形，而可消除所謂描繪線的粗細或描繪 線的濃淡大幅的變化的問題。 除此之外，根據解決前述第1個課題的自動鉛筆，作 成藉由作爲由可撓性的素材所成形的中繼機構發揮功能的 中繼管連接前述旋轉驅動機構與把持筆芯的夾頭之間的構 成，所以即使使用長尺寸的中繼管的時候，也可利用中繼 -12- 201139161 管的可撓性的特質，保證筆芯的正常的旋轉驅動動作。 亦即，藉由使用可撓性的素材所形成的中繼管，可藉 由中繼管的撓曲有效吸收構成旋轉驅動機構的各零件的成 形上的誤差或其組裝的誤差，以及由包含中繼管或夾頭等 的筆芯的旋轉驅動部分的相互的連接所產生的偏心等。 又，解決前述第2個課題的自動鉛筆中，對受到書寫 壓造成的前述夾頭的前後動施予黏著性媒體所產生的阻尼 功能，該阻尼功能是依照相對於固定構件的可動構件的第 1〜第3的相對位置，形成可執行從對注入孔的黏著性媒體 的注入將黏著性媒體均等地塡充到前述兩者的間隙的一連 串的動作。 因此，可提供一種，不需要熟練可容易進行黏著性媒 體的塡充，而且可穩定且確實地進行對兩者的間隙的黏著 性媒體的塡充，對阻尼功能不會有不均發生的自動鉛筆。 【實施方式】 依據圖所示的實施的形態，針對本發明的自動鉛筆進 行說明。圖1及圖2是以剖面圖表示其整體構成者，圖1表 示自動鉛筆的前半部，圖2表示後半部。此外，在以下所 示的各圖中，雖以同一符號表示同一部分，但圖1及圖2所 示的整體圖中，在其代表性的部分標示符號》 以符號1所示的筆頭（筆尖頭）是與構成由金屬素材 所成形的軸筒的前軸2的前端部螺合，而可裝卸地被安裝 。並且，沿著前述前軸2及後述的後軸的中心部以同軸狀 -13- 201139161 收容筒狀的芯盒3。在該芯盒3的前端部安裝有如圖3所示 的短軸的芯盒接頭4，隔著前述芯盒接頭4連結有黃銅製的 夾頭5。 在該夾頭5內，沿著其軸芯形成有未圖示的筆芯的通 孔，且前端部被分割成複數個’被分割的前端部被滑嵌在 由黃銅形成環狀的夾扣具6內。而環狀的前述夾扣具6被安 裝在以包覆前述夾頭5的周圍的方式被配置的管子接頭7的 內面。 在前述管子接頭7的前端部安裝有被收容在前述的筆 頭1內，其前端部比筆頭更突出的圓筒狀的滑件8’並且在 滑件8的前端部安裝有引導筆芯的前端管9。此外，在前述 滑件8的內面，收容有如圖3所示在軸芯部分形成通孔的橡 膠製的保持夾頭10。 根據前述的構成，比筆芯盒3更形成於夾頭5內的通孔 ，經由被形成在前述保持夾頭1〇的軸芯的通孔，形成到達 前端管9的直線狀的芯插通孔，在該直線狀的芯插通孔內 插通有未圖式的筆芯。並且，在前述的管子接頭7與芯盒 接頭4之間，配置有螺旋狀的夾頭彈簧1 1。 此外，前述夾頭彈簧11的後端部是與前述芯盒接頭4 的前端面抵接，且前述夾頭彈簧Π的前端部是與形成在管 子接頭7的內周面的環狀構件抵接的狀態下被收容。因此 ，藉由前述夾頭彈簧11的作用，前述夾頭5朝後退的方向 被彈推，亦即朝把持筆芯的方向被彈推。 在由前述的構成所進行的筆芯的連續輸出單元，是藉 -14- 201139161 由按壓操作後述說明的按壓構件（按壓棒），使前述芯盒 4在軸筒內前進。此時，形成在前述滑件8的大徑部與筆頭 1的內面抵接，爲了阻止其前進，夾頭5的前端部自夾扣具 6相對的突出，解除夾頭5所爲之筆芯的把持狀態。然後， 藉由前述按壓操作的解除，藉由夾頭彈簧11的作用，芯盒 3及夾頭5在軸筒內後退。 此時，筆芯在被形成在保持夾頭10的通孔內，藉由摩 擦被保持，在此狀態，夾頭5後退，將其前端部收容在前 述夾扣具6內，形成再把持住筆芯的狀態。亦即，藉由後 述的按壓棒的反覆的按壓操作，夾頭5前後作動，藉此進 行筆芯的解除與把持，進而作用筆芯從夾頭5依序朝前方 被連續釋出。 如圖1及圖4所示，在構成軸筒的前述前軸2，握柄構 件13以包圍前軸2的方式被安裝。該握柄構件13是如圖4的 詳細所示，被安裝在嵌合在前軸2的後端部金屬製的軸接 頭Μ與前述的筆頭1之間。而且，握柄構件13是由：由橡 膠素材所形成的內側層1 3b、與由相同的橡膠素材所形成 的被覆層13a所構成，在兩者之間依需要作成塡充有膠狀 物質的構成。 此外，以遮蔽形成在前述軸接頭14的前端部的凸緣部 14a的方式嵌入合成樹脂製的軸遮蔽件15，前述握柄構件 13的後端部是以被前述軸遮蔽件15遮蔽的方式被安裝。 在前述軸接頭1 4的外周面形成有螺旋狀的螺紋，利用 該螺紋，如圖2所示，鎖入構成軸筒的後軸17而被安裝。 -15- 201139161 又’以遮蔽後軸17的外側的方式，安裝有一體成形有筆夾 部18a的外軸18，該外軸18是藉由被螺裝在前述後軸17的 後端部的止動環19，在前述軸遮蔽件15之間朝軸向插入的 方式被安裝。 在該實施的形態如前述，在前軸2側安裝有比較厚壁 的握柄構件13的關係下，筆芯的旋轉驅動機構21是如圖2 所示，被配置在比握柄構件1 3的安裝位置更位於後方的前 述後軸17與芯盒3之間。該旋轉驅動機構21的構成之後雖 會詳細的說明，但被收容在由與自動鉛筆本體獨立的1個 單元所構成的前述軸筒內。 而且，在能作爲汎用品來利用而被單元化的前述旋轉 驅動機構2 1，如圖3所示，連接有由可撓性的素材所成形 可作爲中繼構件發揮功能的管構件（以下也稱爲中繼管。 )22的後端部，該中繼管22的前端部與支撐夾頭5的管子 接頭7連接。 亦即，前述中繼管22以遮蔽前述芯盒3的方式呈同軸 狀配置，該中繼管22是依據書寫動作，將筆芯的後退及前 進動作（緩衝動作）傳達到旋轉驅動機構21，並且經由前 述中繼管22作用將藉由緩衝動作所產生的前述旋轉驅動機 構21造成的旋轉運動，傳達到前述管子接頭7及夾頭5。 此外，前述旋轉驅動機構21是如圖2所示，在其前端 部藉由介裝在與前述軸接頭14之間的軸彈簧24朝後方被彈 推。又，旋轉驅動機構21的後端部是藉由前述軸彈簧24的 彈推力與前述後軸1 7內由縮徑所形成的段部1 7a。 -16- 201139161 亦即，該實施的形態中，被單元化的前述旋轉驅動機 構21是藉由與後軸17內的段部17a抵接所產生的摩擦被限 制轉動，並作用將藉由前述的緩衝動作所產生的前述旋轉 驅動機構2 1所爲的旋轉運動傳達到前述夾頭5側。此外， 往前述旋轉驅動機構21的軸筒內的安裝並不限於前述的構 成，例如也可藉由嵌入手段將旋轉驅動機構21安裝在軸筒 的一部分。 圖5表示放大前述旋轉驅動機構21的構成者。在該旋 轉驅動機構21具備有形成圓筒狀的轉子26，前述的中繼管 22在旋轉驅動機構21的前端部，以與前述轉子26的內周面 嵌合的方式結合。 前述轉子26是被做成其前端部附近稍微粗徑的粗徑部 ，在其粗徑部的一端面（後端面）形成有第1凸輪面26a， 在粗徑部的另一端面（前端面）形成有第2凸輪面26b另一 方面，覆蓋前述轉子26的後端部側的圓筒狀的上凸輪形成 構件27，是可轉動地被配置在前述轉子26之間，在前述上 凸輪形成構件27的前端部外周嵌合安裝有圓筒狀的下凸輪 形成構件2 8。 然後，在與前述轉子26的第1凸輪面26對峙的上凸輪 形成構件27的前端面形成有固定凸輪面（也稱爲第1固定 凸輪面。）27a。又，在與前述轉子26的第2凸輪面26b對 峙的下凸輪形成構件28的前端部內面形成有固定凸輪面（ 也稱爲第2固定凸輪面。）28a。 此外，關於形成在前述轉子26的第1與第2凸輪面26a -17- 201139161 、26b;以及前述第1固定凸輪面27a、第2固定凸輪面28a 的關係及相互的作用，是依據圖6及圖7之後詳細進行說明 〇 如圖5所示，在前述的上凸輪形成構件27的後端部側 嵌入有筒形構件30，在該筒形構件30的後端部形成有芯盒 3可插通的插通孔30a。並且，在前述筒形構件30內配置有 形成圓筒狀，可在軸向移動的力矩消除器（torque canceller) 31，在該力矩消除器31的內周面前端與前述筒 形構件30的內周面後端之間安裝有螺旋狀的緩衝彈簧32。 前述緩衝彈簧32是作用將前述力矩消除器31朝前方彈 推，前述轉子26被受到該彈推力的前述力矩消除器31推壓 而朝向前方作用。 如上述，該實施的形態的旋轉驅動機構21，其中央部 成爲芯盒3通過的空間部並與芯盒3隔離，由前述的符號26 〜3 2表示的各構件結合成爲一體並構成單元化。 根據前述的旋轉驅動機構21的構成，夾頭5把持筆芯 的狀態下，前述轉子26是隔著中繼管22與夾頭5—起形成 可以軸芯爲中心進行旋轉。然後，自動鉛筆在書寫狀態以 外的時候，藉由前述緩衝彈簧3 2的作用，經由前述力矩消 除器31，轉子26朝前方被彈推。 另一方面，使用了自動鉛筆時，亦即，書寫壓施加在 從前端管9突出的筆芯時，前述夾頭5反抗前述緩衝彈簧32 的彈推力後退，隨著該後退轉子26也在軸向後退。因此， 形成在圖5所示的轉子26的第1凸輪面26a與前述第1固定凸 • 18 - 201139161 輪面27a接合而成爲咬合的狀態。 圖6(A)〜（C)及圖7(D) ' (E)是依序說明依 據前述的動作使轉子26旋轉驅動的旋轉驅動機構21的基本 動作者。圖6及圖7中，符號26是以模式表示前述的轉子者 ，在其一端面（圖的上側的面）’連續形成鋸齒狀的第1 凸輪面26a沿著周面形成圓環狀。又在轉子26的另一端面 (圖的下側的面），連續形成鋸齒狀的第2凸輪面26b也同 樣沿著周面形成圓環狀。 另一方面，如圖6及圖7所示’在上凸輪形成構件27的 圓環狀的端面也沿著周向形成有連續形成鋸齒狀的第1固 定凸輪面27a，在下凸輪形成構件28的圓環狀的端面也沿 著周向形成有連續形成鋸齒狀的第2固定凸輪面28a。 而且，形成在轉子26的第1凸輪面26a、第20凸輪面 26b、形成在上凸輪形成構件27的第1固定凸輪面27a、沿 著形成在下凸輪形成構件28的第2固定凸輪面28 a的周向形 成有鋸齒狀的各凸輪面，其間距是以彼此大致相同的方式 被形成。此外，畫在圖6及圖7的轉子26的中央部的〇印， 表示轉子26的旋轉移動狀態。 圖6 ( A )表示自動鉛筆不使用的狀態（書寫狀態以 外的情況）的上凸輪形成構件27、轉子26、下凸輪形成構 件28的關係。於此狀態，形成轉子26的第2凸輪面26b是藉 由圖5所示的緩衝彈簧32的彈推力與下凸輪形成構件28的 第2固定凸輪面28a側抵接。此時，前述轉子26側的第1凸 輪面26a與前述第1固定凸輪面27a，被設定成在軸向，相 -19 - 201139161 對於凸輪的一齒偏離半位相（半間距）的關係。 圖6(B)表示藉由自動鉛筆的使用對筆芯施加書寫壓 的初期的狀態。此時，經由夾頭5及中繼管22，轉子26朝 軸向後退使緩衝彈簧32收縮。藉此，轉子26在上凸輪形成 構件27側移動。 圖6(C)表示藉由自動鉛筆的使用對筆芯施加書寫壓 ，轉子26與上凸輪形成構件27側抵接的狀態，在這個時候 ，形成在轉子26的第1凸輪面26a與上凸輪形成構件27側的 第1固定凸輪面27a咬合。藉此，轉子26受到相當於第1凸 輪面26a的一齒的半位相（半間距）的旋轉驅動。然後， 在圖6 ( C )所示的狀態，前述轉子26側的第2凸輪面26b與 前述第2的固定凸輪面28 a被設定成在軸向相對於凸輪的一 齒成爲半位相（半間距）偏離的關係。 接著，圖7(D)表示自動鉛筆所進行的書寫結束， 對筆芯解除了書寫壓的初期的狀態，此時，藉由前述的緩 衝彈簧32的作用，轉子26朝軸向前進。藉此，轉子26朝下 凸輪形成構件28側移動。 再者，圖7(E)表示藉由前述的緩衝彈簧32的作用， 轉子26與下凸輪形成構件28側抵接的狀態，在這個時候， 形成在轉子26的第2凸輪面26b與下凸輪形成構件28側的第 2固定凸輪面28a咬合。藉此轉子26再次受到相當於第2凸 輪面26b的一齒的半位相（半間距）的旋轉驅動。 因此，如畫在轉子26的中央部的〇印所示，隨著往受 到書寫壓的轉子26的軸向的往復運動，轉子26受到相當於 -20- 201139161 第1及第2凸輪面26a、26b的一齒（1間距）的旋轉驅動， 經由前述的中繼管22、管子接頭7及夾頭5，被此把持的筆 芯也同樣被旋轉驅動。 根據前述的構成的自動鉛筆，依據書寫造成轉子26往 軸向的往復動作，轉子在其每次的動作受到對應凸輪的一 齒的旋轉運動，藉由該重複依序朝一方向被旋轉驅動。因 此’筆芯也同樣依序被旋轉驅動。所以可防止持續書寫的 過程中的筆芯的偏摩耗的情形，並可消除所謂描繪線的粗 細或描繪線的濃淡大幅變化的問題。 再者，根據前述的構成的自動鉛筆，由於引導筆芯的 前端管9及滑件8，是經由管子接頭7及中繼管22與前述轉 子2 6成爲一體進行動作，所以隨著書寫動作進形的前述的 夾頭5的後退及前進動作，前端管9及滑件8經由中繼管22 朝同方向移動。 因此隨著書寫動作的進行，即使筆芯只有稍微前後動 (緩衝動作），由於引導筆芯的前端管9也會朝同方向移 動，所以在前端管9與筆芯之間，軸向的相對移動不會發 生，可將自前端管9出來的筆芯的尺寸保持在一定。 又，由於前端管9及滑件8是經由中繼管22與前述轉子 26結合，所以筆芯受到旋轉運動時，前端管9及滑件8也會 同樣受到旋轉運動，前端管9與筆芯成爲一體進行旋轉。 因此，根據前述的構成的自動鉛筆，可消除書寫中， 自前端管9出來的筆芯的尺寸因其每次筆芯出來的變化造 成的奇怪感覺的問題。再者，可防止自前端管9出來的筆 -21 - 201139161 芯的尺寸的變化造成前端管切削芯而發生芯折斷的情況， 且也可消除因芯的切屑造成所謂將書寫面污染的問題。 此外，受到前述的螺旋狀的緩衝彈簧32的彈推力將轉 子26朝前方推出的圆筒狀的力矩消除器31，使滑動在該力 矩消除器31的前端面與前述轉子26的後端面之間發生，作 用防止將重複的書寫作用所產生的前述轉子26的旋轉運動 傳達到緩衝彈簧32的情況。 換言之，藉由將力矩消除器31介裝在前述轉子26與緩 衝彈簧32之間，作用阻止前述轉子26的旋轉運動藉由前述 的滑動作用傳達到前述彈簧3 2的情況，且可消除所謂彈簧 32的扭轉返回（彈簧扭矩）的發生，造成轉子26的旋轉動 作障礙的問題。 可是，根據前述的旋轉驅動機構21，在與圖5所示的 緩衝彈簧32的彈推力對抗的前述的緩衝動作，在書寫中， 會殘留「不紮實」或「卡卡」感覺的困擾而造成所謂書寫 的觸感不佳的問題。爲了消除這樣的問題，將黏著性媒體 理想爲黏著性油脂介裝於前述力矩消除器3 1的周側面與前 述筒形構件30的內周面之間，在筒形構件30內朝軸向移動 的力矩消除器31產生緩衝效果爲理想。 因此，如圖5所示，在筒形構件30的側壁的180度對向 的位置分別形成有黏著性油脂的注入孔3 Ob。而且，在力 矩消除器3 1側形成有，經由前述注入孔3 Ob注入黏著性油 脂時，封住該潤滑油，使前述潤滑油滲透到力矩消除器3 1 的周側面的整體的凸狀構件31a及溝部31b。 -22- 201139161 依據圖8〜圖10針對前述的筒形構件30與力矩消除器 3 1的更詳細的構成及其作用進行說明。圖8 ( A )表示前 述力矩消除器31的外観構成，而圖8(B)及圖8(C)在 周向的彼此正交的位置分別切斷力矩消除器3 1的狀態的剖 面圖。 在該力矩消除器31的周側面的180度對向的大致中央 位置分別形成有凸狀構件31a»又在與力矩消除器31的前 述凸狀構件31a鄰接的軸向正後，沿著周向形成有連續的 溝部31b。而且與力矩消除器31的前述凸狀構件31a正交的 周側面形成有朝軸向被平面狀加工的刮掉部3 1 c。 圖9是說明將前述的構成的力矩消除器31插入筒形構 件3 0內，利用筒形構件3 0的注入孔3 Ob注入黏著性油脂的 順序者。亦即，在前述筒形構件30的內周面，收容有前述 力矩消除器31的一對的凸狀構件31a的凹狀部30 c沿著軸向 ，且分別形成與前述注入孔3 Ob連通。 圖9 ( A )是表示利用筒形構件3 0的注入孔3 Ob注入黏 著性油脂時的兩者的位置關係。此外，圖1 0 ( A )表示由 圖9 ( A )的a-a線朝箭頭印方向看到的剖面圖。亦即，此 狀態，力矩消除器31的凸狀構件31a比形成在筒形構件30 的注入孔30b更位於前方。於此狀態，在前述注入孔30b插 入未圖示的噴嘴的前端部，注入前述黏著性油脂。據此， 前述潤滑油貯留在筒形構件30的凹狀部30c內。 圖9 ( B)表示黏著性油脂的注入後，將力矩消除器3 1 朝筒形構件30內稍微推入的狀態者，圖10(B)表示由圖9 -23- 201139161 (B )的b-b線朝箭頭印方向看到的剖面圖。於此狀態，由 於力矩消除器3 1的凸狀構件3 1 a比筒形構件3 0的注入孔3 Ob 更往後方移動，所以形成在筒形構件30的注入孔30b與筒 形構件30內的凹狀部30c是被力矩消除器31的凸狀構件31a 遮斷，且前述凹狀部3 0c成爲密閉狀態。藉此，前述凹狀 部30c內成爲黏著性油脂的潤滑油積存處。 接著，圖9(C)表示將力矩消除器31再往筒形構件30 內推入的狀態者，圖10(C)表示由圖9(C)的c-c線朝箭 頭印方向看到的剖面圖。於此狀態，被封入在潤滑油積存 處的凹狀部30c內的黏著性油脂，因受到力矩消除器31的 推入的壓力而縮小容積，而進入到形成在力矩消除器31的 前述溝部3 lb。 然後，黏著性油脂經由前述溝部31b浸入力矩消除器 3 1的周側面，亦即浸入力矩消除器3 1與筒形構件30之間的 些微的間隙，而完全滲透到兩者之間。 此時，被封入在由凹狀部30c所形成的潤滑油積存處 的剩餘的黏著性油脂，是如圖1 〇所示，經由前述溝部3 1 b 進入到被形成在力矩消除器3 1的周側面的前述刮掉部3 1 c 、與筒形構件3 0之間的間隙（以和刮掉部相同的符號3 1 c 表示。）內並蓄積在此。 此外，作爲前述黏著性油脂，最好使用其濃度100〜 400的範圍者，作爲前述黏著性油脂可適當利用例如信越 化學工業社製的商品名「信越矽脂」品號：G3 3 0〜3 34、 G340 〜3 42、G351 〜3 53、G631 〜63 3 等。 -24- 201139161 藉此，可在往前述力矩消除器31的急激的軸向的移動 動作賦予大黏性阻抗，對於比較緩慢動作的静的的負荷可 給予黏性阻抗變的非常小的阻尼功能。 因此，根據前述的構成，因書寫壓的解除使力矩消除 器前進移動時，可有效果的給予緩衝的功能，並可有效果 地更正伴隨前述的緩衝動作所發生的不佳的書寫的觸感。 除此之外，根據前述的構成，可容易進行實現阻尼功能的 黏著性油脂的注入及塗布操作，且對於實現阻尼功能的部 分的黏著性油脂的塗布量也可均等，所以可極爲縮小緩衝 特性不均的情況。 此外，前述的實施的形態中，在筒形構件3 0分別形成 有一對的注入孔30b與凹狀部30c，另一方面，雖在前述力 矩消除器31形成有一對的凸狀構件31a，但這是爲了黏著 性油脂的注入及塗布操作的作業的方便性而形成一對者， 該等各形成1個，可實現其功能。 回到圖2，在前述的內軸17的後端部內，作爲按壓構 件的按壓棒35對於後軸17可滑動地被安裝，在後軸17與按 壓棒35之間的空間部配置有按壓棒的返回彈簧36。並且， 在比按壓棒35的中央更稍微靠後端部形成有具備有筆芯的 補給孔的抵接部35a。此外，在按壓棒35的後端部，橡皮 擦37可裝卸地被安裝，並且覆蓋橡皮擦37的按壓蓋38可裝 卸地被安裝在按壓棒35的後端部的周面》 前述的按壓棒35的抵接部35 a與前述的芯盒3的後端部 是以預定的間隔形成對峙的構成。亦即，芯盒3並沒有與 -25- 201139161 前述按壓棒3 5機械性連結，而是以前述間隔分離。 該構成中，進行前述按壓棒35的按壓操作時’按壓棒 35的前述抵接部35a與芯盒3的後端部抵接，就這樣作用將 芯盒3朝前方推出。藉此，如前述，夾頭5前進作用由前端 管9連續釋出筆芯。然後藉由前述的按壓操作的解除，按 壓棒3 5藉由返回彈簧3 6的作用後退恢而復到圖2所示的狀 態。 根據前述的構成，由於被形成在按壓棒35的抵接部 35 a與前述芯盒3的後端部是以預定的間隔對峙，所以即使 因書寫所爲之緩衝動作，使夾頭5及芯盒3稍微後退時，芯 盒3的後端部也不會與前述按壓棒35的抵接部35 a衝撞，可 防止對前述旋轉驅動機構21進行的旋轉動作造成障害的情 形。 圖11及圖12表示可顯示書寫動作的過程中，前述的旋 轉驅動機構21的轉子26旋轉運動時的樣子的例子。亦即， 圖11(A)及（B)是改變角度的前述的轉子26的構成的 立體圖。 該轉子26理想是由白色的樹脂材料所成形，在形成該 轉子26的前述的第1凸輪面26a與第2凸輪面26b的粗徑部， 在其周側面的對向的位置形成有例如由黑色形成的顯示部 2 6 c。亦即，沿著前述粗徑部的周向，以9 〇度的間隔形成 有由白色及黑色所形成的顯示部26c。 另一方面’圖】2(A)及（B)表示自動鉛筆的外観 ’由被施加在前述的轉子26的白黑所形成的前述顯示部 -26- 201139161 26c可從外側透過看見。在該例子，表示經由形成圓形狀 的窗部20顯示由白黑所形成的前述顯示部26 c的樣子，（A )表示隨著轉子26的旋轉，在窗部20顯示顯示部26c的白 與黑的邊界部的樣子。而（B)是表示隨著轉子26的進一 步的旋轉，在窗部20顯示顯示部26c的黑色部分的樣子。 前述的構成是由光透過性的樹脂分別形成：覆蓋前述 轉子26的外側之圖5所示的旋轉驅動機構21的下凸輪形成 構件2 8、位在前述旋轉驅動機構2 1的外側的圖2所示的後 軸1 7、覆蓋前述後軸1 7的更外側的外軸1 8，例如可保留前 述的圓形狀的窗部2 0對前述後軸1 7的周側面施予塗抹處理 方式來實現。 如此’構成可從外側看見轉子26的旋轉狀態的方式， 在進行自動鉛筆的製造組裝的動作確認檢查，可藉由目視 容易進行旋轉驅動機構的良否判斷。又對於使用者在使用 時可產生興味或一種的樂趣，也可有助於產品的大區分。 可是’在前述的旋轉驅動機構21，如已說明的情況， 由於受到書寫壓，使轉子26在軸向往復移動（緩衝動作） ，使形成在轉子26的第1及第2凸輪面26a、2 6b與第1及第2 固定凸輪面27a、28a互相咬合，筆芯受到旋轉驅動。 因此’在前述的構成所形成的旋轉驅動機構21，在書 寫壓造成的前述轉子26的後退動作的途中，且在書寫壓的 解除造成的前述轉子26的前進動作的途中，轉子側的第1 與第2凸輪面26a、2 6b分別從第1與第2固定凸輪面27a、 2 8 a離開，發生前述轉子26在旋轉方向瞬間成爲自由的狀 -27- 201139161 態。 在此瞬間，受到些微的外力或振動等，轉子26會有陷 入旋轉動作不良的情況。亦即，在發明者們的試作及驗證 結果確認了會產生轉子側的凸輪齒沒有辦法搭在差半間距 的固定側的下一個凸輪齒上的狀態。因此，在前述的現象 接連發生的狀態下，也可預料到筆芯不能旋轉的情況。 圖13〜圖15是說明其對策例者，這是如圖8〜圖10所 示，在筒形構件30與力矩消除器31之間，構成由黏著性油 脂形成阻尼功能之後，在組裝前述旋轉驅動機構2 1時得以 執行。 亦即，圖13表示對筒形構件30嵌入上凸輪形成構件27 的旋轉驅動機構2 1的最終組裝工程，黏著性油脂G沿著周 向被塗布在被收容在上凸輪形成構件27內的前述轉子26的 筒體部分。於此狀態，將上凸輪形成構件27的端部稍微插 入前述简形構件30的開口部，如圖1 4所示，前述黏著性油 脂G被關在形成在筒形構件30的開口部與上凸輪形成構件 27的端部之間的空間部。 再者，如圖1 5所示，將上凸輪形成構件27的端部周側 面嵌合在筒形構件30的開口部內面，組裝旋轉驅動機構21 的方式，前述黏著性油脂G進入到上凸輪形成構件27與轉 子26的筒體部之間。藉此，在轉子26藉由前述黏著性油脂 G賦予朝旋轉方向的黏性阻抗。 根據前述的構成，前述轉子26由於是藉由前述黏著性 油脂G賦予朝旋轉方向的些微的黏性阻抗’所以如前述’ -28- 201139161 當轉子26在旋轉方向成爲自由狀態的瞬間，即使受到振動 等，轉子26也可藉由黏著性油脂G被保持。又，當轉子26 的第1或第2凸輪面與第1或第2固定凸輪面咬合時，不會對 其旋轉造成影響。 藉此，可提供與書寫動作，確實執行筆芯的旋轉動作 的自動鉛筆。此外，在轉子26的旋轉方向賦予黏性阻抗的 前述黏著性油脂G，可使用與用來對前述的力矩消除器31 賦予阻尼功能用的黏著性油脂同樣的油脂。 以上說明的實施的形態中，在軸筒安裝有比較厚的握 柄構件的關係下，筆芯的旋轉驅動機構21是被收容在比握 柄構件的安裝位置更後方的後軸17內，旋轉驅動機構21是 經由中繼管22與夾頭5連結。如該例，採用比較長尺寸的 中繼管22時，中繼管22是與芯盒3—起由前述的可撓性的 素材，例如由聚丙烯等所成形爲理想。 採用前述的可撓性的素材形成的中繼管22，即使存在 著構成旋轉驅動機構2 1的各零件的成形上的誤差或其組裝 的誤差，及因含有中繼管22或夾頭5的筆芯的旋轉驅動部 分的相互的連接造成的偏心等，也可利用前述中繼管22的 可撓性的特質，保證筆芯的正常的旋轉驅動動作。 此外，該發明的自動鉛筆是如實施的形態所示採用比 較長的中繼管時，雖會發揮特別顯著的作用效果，但不限 定於此，即使採用比較短的中繼管，也可享受程度小的同 樣的作用效果。 -29- 201139161 【圖式簡單說明】 圖1表示本發明的自動鉛筆的前半部的剖面圖。 圖2同樣表示後半部的剖面圖。 圖3表示筆芯的連續釋出單元及筆芯的旋轉驅動機構 的前視圖及中央剖面圖。 圖4表示前軸及握柄構件的構成的剖面圖。 圖5表示筆芯的旋轉驅動機構的放大剖面圖。 圖6是依序說明旋轉驅動機構所具備的轉子的旋轉驅 動作用的模式圖。 圖7是接著圖6說明轉子的旋轉驅動作用的模式圖。 圖8是旋轉驅動機構所具備的力矩消除器的外観立體 圖及剖面圖。 圖9表示旋轉驅動機構所具備的力矩消除器與筒形構 件的關係的剖面圖。 圖1 0是由圖9的a-a線、b-b線及c-c線朝箭頭印方向觀 看的剖面圖。 圖11表示改變顯示轉子的旋轉狀態的顯示部的構成例 的角度的轉子的立體圖。 圖丨2表示轉子的旋轉狀態的本發明的自動鉛筆的外觀 圖。 圖1 3是說明旋轉驅動機構的最終組裝工程的剖面圖。 圖1 4是繼續圖1 3說明組裝工程的剖面圖。 圖1 5是繼續圖1 4說明組裝工程的剖面圖。 -30- 201139161 【主要元件符號說明】 1 :筆頭（筆尖頭） 2 :前軸（軸筒） 3 :芯盒 5 :夾頭 6 :夾扣具 8 :滑件 1 3 :握柄構件 1 4 :軸接頭 1 7 :後軸（軸筒） 1 8 :外軸 2 1 :旋轉驅動機構 22 :中繼構件（中繼管） 24 :軸彈簧 26 :轉子 26a :第1凸輪面 26b :第2凸輪面 2 7 :上凸輪形成構件 2 7 a :第1固定凸輪面 28 :下凸輪形成構件 28a :第2固定凸輪面 30 :筒形構件 3〇b :注入孔 30c :凹狀部（空間部） -31 201139161 31 :力矩消除器 3 1 a :凸狀構件 3 1 b :溝部 3 1c :刮掉部（第2空間部） 3 2 :緩衝彈簧 35:按壓棒（按壓構件） 3 6 :返回彈簧 37 :橡皮擦 38 :按壓蓋 -32-BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical pencil that can rotate a refill (replacement core) by using a writing pressure. [Prior Art] When writing with a mechanical pencil, it is generally not used in a state in which the barrel is orthogonal to the writing surface (paper surface), and is often used in a state of being slightly inclined with respect to the writing surface. As described above, when writing in the state of the tilting cylinder, there is a case where the writing core has a partial wear (asymmetric wear) during the continuous writing, so that the so-called drawing line becomes thicker than the beginning. Further, not only the thickness of the drawing line is changed, but also the contact area of the writing lead with respect to the writing surface is changed, so that the shading of the drawing line changes (the drawing line becomes thin) during the continuous writing. When the above-mentioned problem is avoided, since the tip end of the refill is in contact with the paper surface and written in the case where the cylinder is continuously rotated, the problem that the drawing line becomes thick during the continuous writing can be avoided. However, when the cylinder is continuously rotated to perform writing, as the writing progresses, there is a problem that it is necessary to change the operation of the shaft holding method, and the writing efficiency is remarkably lowered. At this time, when the outer casing of the shaft cylinder is formed into a cylindrical shape, it is not impossible to change the rotation of the shaft cylinder to perform the writing in sequence, but the outer casing is not cylindrical, and a projection is provided in the middle abdomen, or When it is a side-by-side type of automatic pencil, it is difficult to change the way in which the cylinder is rotated in the same manner as described above. Here, in order to eliminate the above-mentioned problems, a mechanical pencil having a rotary drive mechanism that rotates the writing reed by a chuck that constitutes a holding refill, and that rotates the refill together with the collet is provided, for example, Japanese Patent No. 3 882272, Japanese Patent No. 3 8 8 53 15 and the like are disclosed. However, according to the mechanical pencil disclosed in the above-mentioned prior art document, in the barrel, the vertical projections and the vertical grooves are alternately arranged, and the cam portion that spans the inclined surfaces is formed in a ring shape. Further, a rotor in which a discontinuous projection is formed in the circumferential direction is housed in the barrel. Then, by retracting the refill substantially, the rotor is pushed up, and the projection of the rotor rests on the longitudinal projection of the cam portion formed in the barrel, and falls into the longitudinal groove of the partition via the inclined surface. The rotation of the rotor is achieved, and the rotational motion of the rotor is transmitted to the core case, and the refill is rotationally driven. This is a well-known Kern knock mechanism that is often used in a push-type ball pen or the like. According to the above-described mechanical pencil, when the rotor is rotated, it is necessary to have a large retreating stroke for the projection on the rotor side to cross the refill required for the vertical projection formed in the barrel. Therefore, when the core is asymmetrically worn due to writing, it is necessary to apply a pressure equal to or higher than the normal writing pressure to the refill to allow the rotor to retreat in the bobbin, so that the rotor-side projection is formed in the barrel. The operation of writing the aforementioned longitudinal projections is different. Since the operation must be performed relatively frequently during each asymmetric wear process of the refill, there is a problem that the efficiency of writing is lowered. 201139161 In this case, the applicant of the present application applied for the use of a refill in the writing process in order to solve the problem of the automatic pencil disclosed in the aforementioned prior art document, in Japanese Patent Application No. 2007-339074 and Japanese Patent Application No. 2007-339〇75. A slight retreat and forward movement (this is also referred to below as a buffering action.), a mechanical pencil that rotates the refill. In the mechanical pencil of the above-mentioned application, the first and second cam faces are formed on the respective end faces of the cylindrical rotor, and the first cam surface and the first fixed cam are caused by the retracting operation of the rotor by the writing pressure. The surface abuts and bites. Further, the forward movement of the rotor is caused by the release of the writing pressure, and the second cam surface and the second fixed cam surface are brought into contact with each other and engaged. Then, by the reciprocal engagement of the cams described above, the rotors are sequentially rotated in one direction. The rotation is configured to be transmitted to the refill via the collet holding the refill. According to the aforementioned configuration, the amount of backlash (buffering action amount) of the core during writing is set to 0. 05~0. 5 mm, The refill can be rotated in sequence, This provides a highly practical automatic pencil that does not degrade the efficiency of writing. On the other hand, in the above-mentioned automatic pen, Because the writing causes the core to accompany the aforementioned buffering action, Therefore, in the rewinding action of the refill, There will always be a "not solid" touch. The "kaka" feel will also occur in the return movement of the refill caused by the buffer spring. In order to alleviate the occurrence of discomfort caused by this unique touch, The applicant of the present application has proposed a movable member that mediates an adhesive medium (adhesive grease) in the axial direction together with the refill; And a mechanical pencil that imparts a damping function to the buffering action of the refill between the fixing member facing the movement of the moving member of the above-mentioned 201139161. This application is disclosed in the aforementioned Japanese Patent Application No. 2007-339075 (International Publication No. WO 2009/84446). SUMMARY OF THE INVENTION However, Even in this kind of automatic pencil with a revolving drive mechanism with a refill, We must also seek to diversify the needs of our customers. For example, it is conceivable to adopt a configuration in which a grip portion formed of a relatively thick thick coated rubber is disposed on the front end side of the shaft; Or, the side press member for continuous release of the refill is disposed on the side wall of the barrel. at this time, It is necessary to arrange the aforementioned rotary drive mechanism on the rear half side of the barrel. And a structure in which a rotary relay tube of a relatively long size is connected between the rotary drive mechanism and the grip head of the holding refill, as described above, In particular, the rotary drive mechanism is disposed in the vicinity of the rear of the barrel, Since there must be a long rotating relay tube, Therefore, there is a large error in the forming of the components constituting the rotary drive mechanism or an assembly error thereof. And the influence of eccentricity or the like caused by the mutual connection of the rotary drive portions of the refill including the relay pipe or the collet, However, it is difficult to ensure the normal rotational driving action of the refill. The present invention provides a Focusing on the aforementioned unique problem points of the automatic pencil having the revolving drive mechanism with the refill, Even if, for example, a long rotating relay tube is used, It is also possible to overcome the obstacles caused by the various factors mentioned above, On the other hand, the automatic pencil that can guarantee the normal rotation drive action of the refill is the first subject. -8- 201139161 An adhesive grease that produces a damping function in the buffering action of the refill, Is applied to the periphery of the moment eliminator as the movable member described above, The torque canceller in this state is assembled so as to be mounted along the inner peripheral surface of the cylindrical stopper member of the fixing member. therefore, According to the above-mentioned application and filling operation of the adhesive grease, Even if the circumferential surface of the torque canceller is often attached with approximately the same amount of adhesive grease, When the torque canceller is installed along the inner circumferential surface of the stopper member, There is also the problem of the amount of lubricating oil that is added between the two due to a slight difference in the assembly method of the two. that is, The amount of the adhesive grease that is filled in the gap between the aforementioned torque canceller and the stopper member cannot be stabilized. There is also no guarantee that the entire area of the gap between the two will be filled with adhesive grease. therefore, There is a so-called nuisance that is prone to unevenness. A problem with poor functional stability. this invention, It is a problem that focuses on the aforementioned damping function of the automatic pencil having the revolving drive mechanism of the refill, Especially to provide one, It is not necessary to be proficient in the filling operation of adhesive grease. Moreover, it is possible to stably and surely perform the charge of the adhesive grease which is filled into the gap between the two, A mechanical pencil that does not cause unevenness in the damping function is the second problem. Solving the first problem described above, using the mechanical pencil of the present invention The lifting and holding of the core is performed by the forward and backward movement of the chuck according to the pressing operation of the pressing member, The composition can continuously release the aforementioned refills toward the front, And, In a state in which the aforementioned collet holds the above-mentioned refill, a mechanical pencil that can be accommodated in the aforementioned shaft in a manner that can be moved forward and backward and can be rotated about the core. Its characteristics are: a rotary -9-201139161 that can convert the axial reciprocating motion into a rotary motion, and the rotary drive mechanism is coupled to the rotary body and the aforementioned chuck through a relay member formed by the flexible material , With the relay member, The front and rear movements caused by the writing pressure applied to the refill held by the collet are used to reciprocate the rotary drive mechanism. Further, the rotary motion generated by the rotary drive mechanism is transmitted to the chuck. at this time, It is preferable that the relay member is disposed coaxially outside the core case that is connected to the rear end portion of the chuck. and, In a preferred form of the aforementioned rotary drive mechanism, The rotary drive mechanism is provided with a rotor to which the relay member is connected, The rotor is formed in an annular shape. First and second cam faces are formed on one end surface and the other end surface of the axial direction, respectively. Further, the first and second fixed cam faces respectively facing the first and second cams are provided. The retracting action of the aforementioned collet caused by the aforementioned writing pressure, The first cam surface of the annular rotor abuts against the first fixed cam surface and engages with each other. The second cam surface constituting the rotor is abutted against the second fixed cam surface by the release of the writing pressure, and is engaged with the second fixed cam surface. In a state in which the first cam surface on the rotor side is engaged with the first fixed cam surface, The second cam surface on the rotor side and the second fixed cam surface Is set to be offset in the axial direction relative to a tooth position of the cam, In a state in which the second cam surface on the rotor side is engaged with the second fixed cam surface, The first cam surface on the rotor side and the first fixed cam surface are set to be in a phase-shifted relationship with respect to one tooth of the cam in the axial direction. at this time, The aforementioned rotary drive mechanism is provided with: In the state where the writing pressure is released, It is preferable that the second cam surface of the rotor abuts against the second fixing -10-201139161, and the cam surface is in a state of being engaged. Furthermore, in addition to the aforementioned composition, Formed between the rear end portion of the rotor of the rotary drive mechanism and the buffer spring, a torque canceller that is slid between the rear end portion of the rotor and the aforementioned rotor, It is desirable to prevent the rotational motion of the aforementioned rotor from being transmitted to the aforementioned buffer spring. On the other hand, in order to solve the above-mentioned second problem, the automatic pencil of the invention is The refilling and holding of the refill is performed by the forward and backward movement of the collet according to the pressing operation of the pressing member, And the composition can continuously release the aforementioned refills toward the front, and, In a state in which the aforementioned collet holds the above-mentioned refill, It can be accommodated in the above-mentioned shaft cylinder in such a manner that it can be moved forward and backward and can be rotated around the core. And having the forward and backward movement of the aforementioned chuck according to the writing pressure of the aforementioned refill, a mechanical pencil that is held by a rotary drive mechanism that is rotationally driven by the refill of the aforementioned chuck, Its characteristics are: According to the forward and backward movement of the aforementioned chuck according to the writing pressure of the aforementioned refill, An adhesive medium is interposed between the movable member that moves in the axial direction and the fixed member that faces the movement of the movable member, The damper function is generated by the adhesive medium in the retreat and forward movement of the refill. On the side wall of the aforementioned fixing member, Relative to the aforementioned fixed member, The movable member is in a state of being in a first relative position, A space portion that communicates with the injection hole is formed between the fixing member and the movable member. Relative to the aforementioned fixing member, The movable member is in a state of the second relative position, The injection member and the space portion are blocked by the movable member. Forming the space portion in a slightly sealed state with respect to the aforementioned fixing member, The movable member is in a state of a third relative position, The volume of the space portion that is slightly sealed is narrowed. -11 - 201139161 At this time, It is preferable to form an injection hole into which the above-mentioned adhesive medium can be injected. also, It is desirable that the aforementioned fixing member is disposed by arranging the movable member on the inner side. a tubular member that slidably supports the movable member is formed and a movable portion is formed with a groove portion continuous along the outer peripheral surface. Relative to the aforementioned fixing member, The movable member is in the state of the aforementioned third relative position, Forming an adhesive medium stored in the space portion, The gap between the movable member and the fixed member can be infiltrated through the aforementioned groove. Other than that, Relative to the aforementioned fixing member, The movable member is in the state of the aforementioned third relative position, It is preferable that the groove portion formed in the movable member and the second space portion formed between the fixed member and the movable member communicate with each other. at this time, In an ideal form, The torque canceller is used as the movable member that moves in the axial direction together with the chuck, The above-described torque canceller can be configured to have a part of the aforementioned damping function. According to the aforementioned mechanical pencil of the present invention, Have the ability to withstand writing pressure, a rotary drive mechanism that rotationally drives the rotor, The rotational motion of the aforementioned rotor is transmitted to the refill via the collet. therefore, In the process of writing movements, Since the core is slowly driven by rotation, Therefore, it is possible to prevent the eccentricity of the refill during the continuous writing process, This eliminates the problem of the thickness of the so-called line or the sharp change in the shade of the line. Other than that, According to the automatic pencil that solves the first problem mentioned above, A relay pipe functioning as a relay mechanism formed of a flexible material is connected between the rotary drive mechanism and the chuck holding the refill, So even when using a long-sized relay tube, The flexibility of the relay -12- 201139161 tube can also be utilized, Ensure the normal rotation drive action of the refill. that is, By using a relay tube formed of flexible materials, The deformation of the components constituting the rotary drive mechanism or the error of assembly thereof can be effectively absorbed by the deflection of the relay pipe. And eccentricity or the like generated by mutual connection of the rotary driving portions including the refills of the relay tube or the collet. also, In the automatic pencil that solves the second problem mentioned above, Damping function applied to the adhesive medium by the forward and backward movement of the aforementioned chuck caused by the writing pressure, The damping function is in accordance with the first to third relative positions of the movable member with respect to the fixing member. Forming a series of operations that can perform an injection from the adhesive medium to the injection hole to evenly bond the adhesive medium to the gap between the two. therefore, Can provide one, It does not require proficiency to easily carry out the filling of adhesive media. Moreover, the adhesion of the adhesive medium to the gap between the two can be stably and surely performed. A mechanical pencil that does not have unevenness in the damping function. [Embodiment] According to the embodiment shown in the figure, The automatic pencil of the present invention will be described. 1 and 2 are the overall components of the cross-sectional view, Figure 1 shows the front half of the mechanical pencil. Figure 2 shows the second half. In addition, In each of the figures shown below, Although the same part is indicated by the same symbol, However, in the overall diagram shown in Figures 1 and 2, In the representative part thereof, the symbol (the tip) indicated by the symbol 1 is screwed to the front end portion of the front shaft 2 constituting the barrel formed of the metal material. It is detachably installed. and, A cylindrical core case 3 is accommodated in a coaxial shape -13 - 201139161 along the center portion of the front shaft 2 and a rear shaft to be described later. A short-shaft core box joint 4 as shown in Fig. 3 is attached to the front end portion of the core box 3, A brass chuck 5 is coupled to the core case joint 4 via the core connector 4. In the collet 5, A through hole of a refill not shown is formed along the axis thereof, Further, the distal end portion is divided into a plurality of 'divided distal end portions which are slidably fitted into the clips 6 which are formed in a ring shape by brass. The ring-shaped clip 6 is attached to the inner surface of the pipe joint 7 which is disposed to cover the periphery of the chuck 5. The front end portion of the pipe joint 7 is attached to the tip 1 which is accommodated in the foregoing, A front end pipe 9 that guides the refill is attached to the front end portion of the slider 8 at a front end portion of the cylindrical slider 8' that protrudes more than the pen tip. In addition, On the inner side of the aforementioned slider 8, A rubber retaining chuck 10 having a through hole formed in the axial core portion as shown in Fig. 3 is housed. According to the aforementioned constitution, a through hole formed in the collet 5 than the refill box 3, Via the through hole formed in the aforementioned axial core of the holding chuck 1〇, Forming a linear core insertion hole reaching the front end tube 9, A refill having a pattern is inserted into the linear core insertion hole. and, Between the aforementioned pipe joint 7 and the core box joint 4, A helical collet spring 1 1 is provided. In addition, The rear end portion of the collet spring 11 abuts against the front end surface of the core box joint 4, Further, the tip end portion of the chuck spring 被 is housed in a state in which it is in contact with the annular member formed on the inner circumferential surface of the pipe joint 7. Therefore, By the action of the aforementioned chuck spring 11, The aforementioned chuck 5 is pushed in the backward direction, That is, it is pushed in the direction of holding the refill. In the continuous output unit of the refill performed by the aforementioned configuration, -14- 201139161 The pressing member (pressing rod) described later by the pressing operation, The aforementioned core box 4 is advanced in the barrel. at this time, The large diameter portion formed on the slider 8 abuts against the inner surface of the pen tip 1 In order to stop it from moving forward, The front end portion of the collet 5 protrudes from the clip 6 oppositely, The holding state of the refill of the collet 5 is released. then, By the release of the aforementioned pressing operation, By the action of the collet spring 11, The core box 3 and the collet 5 are retracted within the barrel. at this time, The refill is formed in the through hole of the holding collet 10, Being kept by friction, In this state, Chuck 5 retreats, The front end portion is housed in the aforementioned clip device 6, Form the state of holding the refill. that is, By the repeated pressing operation of the pressing rod described later, The chuck 5 is operated back and forth, With this, the refill and control of the refill are performed. Further, the function refill is continuously discharged from the chuck 5 in order toward the front. As shown in Figure 1 and Figure 4, In the aforementioned front axle 2 constituting the barrel, The grip member 13 is mounted in such a manner as to surround the front axle 2. The grip member 13 is as shown in detail in FIG. It is attached between the shaft joint 金属 which is fitted to the rear end portion of the front shaft 2 and the aforementioned tip 1 . and, The grip member 13 is composed of: The inner layer 13b formed of rubber material, It is composed of a coating layer 13a formed of the same rubber material, A composition of a gelatinous substance is prepared between the two as needed. In addition, The shaft shield 15 made of synthetic resin is fitted so as to shield the flange portion 14a formed at the front end portion of the shaft joint 14, The rear end portion of the aforementioned grip member 13 is attached so as to be shielded by the aforementioned shaft shield 15. A spiral thread is formed on an outer circumferential surface of the shaft joint 14 Using the thread, as shown in picture 2, It is mounted by locking the rear shaft 17 constituting the barrel. -15- 201139161 again, in order to shield the outside of the rear axle 17, An outer shaft 18 integrally formed with a pen holder portion 18a is mounted, The outer shaft 18 is a snap ring 19 that is screwed to the rear end portion of the rear axle 17, A manner of being inserted in the axial direction between the aforementioned shaft shields 15 is mounted. The form of this implementation is as described above, With the relatively thick-walled grip member 13 attached to the front axle 2 side, The rotary drive mechanism 21 of the refill is as shown in FIG. It is disposed between the rear axle 17 and the core case 3 which are located further rearward than the mounting position of the grip member 13. The configuration of the rotary drive mechanism 21 will be described in detail later. However, it is housed in the aforementioned barrel formed of one unit independent of the main body of the robot. and, The aforementioned rotary drive mechanism 2 1 that can be unitized as a pan-product As shown in Figure 3, A pipe member that is formed of a flexible material and functions as a relay member (hereinafter also referred to as a relay pipe) is connected. ) the back end of 22, The front end portion of the relay pipe 22 is connected to the pipe joint 7 of the support chuck 5. that is, The relay tube 22 is coaxially arranged to shield the core case 3, The relay tube 22 is in accordance with a writing action. The retracting and forward movement (buffering action) of the refill is transmitted to the rotation driving mechanism 21, And the rotary motion caused by the aforementioned rotary drive mechanism 21 generated by the buffering operation is applied via the relay pipe 22 described above. It is transmitted to the aforementioned pipe joint 7 and the chuck 5. In addition, The aforementioned rotary drive mechanism 21 is as shown in FIG. The front end portion is urged rearward by a shaft spring 24 interposed between the shaft joint 14 and the shaft joint 14. also, The rear end portion of the rotary drive mechanism 21 is a step portion 17a formed by the elastic force of the aforementioned shaft spring 24 and the reduced diameter in the rear shaft 17. -16- 201139161 That is, In the form of the implementation, The unitary rotary drive mechanism 21 is limited in rotation by friction generated by abutment with the segment portion 17a in the rear axle 17, Further, the rotary motion of the rotary drive mechanism 21 generated by the above-described buffering operation is transmitted to the chuck 5 side. In addition, The mounting in the barrel of the aforementioned rotary drive mechanism 21 is not limited to the aforementioned configuration, For example, the rotary drive mechanism 21 can also be mounted to a portion of the barrel by means of an embedding means. FIG. 5 shows a configuration in which the above-described rotation drive mechanism 21 is enlarged. The rotation drive mechanism 21 is provided with a rotor 26 that is formed in a cylindrical shape. The aforementioned relay pipe 22 is at the front end portion of the rotary drive mechanism 21, It is combined with the inner peripheral surface of the rotor 26 described above. The rotor 26 is a large diameter portion which is formed to have a slightly larger diameter near the front end portion thereof. A first cam surface 26a is formed on one end surface (rear end surface) of the large diameter portion thereof, Another aspect of the second cam surface 26b is formed on the other end surface (front end surface) of the large diameter portion, a cylindrical upper cam forming member 27 covering the rear end side of the rotor 26, Is rotatably disposed between the aforementioned rotors 26, A cylindrical lower cam forming member 28 is fitted and fitted to the outer periphery of the front end portion of the upper cam forming member 27. then, A fixed cam surface (also referred to as a first fixed cam surface) is formed on the front end surface of the upper cam forming member 27 opposed to the first cam surface 26 of the rotor 26. ) 27a. also, A fixed cam surface (also referred to as a second fixed cam surface) is formed on the inner surface of the front end portion of the lower cam forming member 28 opposed to the second cam surface 26b of the rotor 26. ) 28a. In addition, Regarding the first and second cam faces 26a -17- 201139161 formed on the rotor 26, 26b; And the first fixed cam surface 27a, The relationship between the second fixed cam faces 28a and their mutual roles, It is explained in detail after FIG. 6 and FIG. 7 〇 as shown in FIG. 5, A cylindrical member 30 is fitted to the rear end side of the upper cam forming member 27, An insertion hole 30a through which the core case 3 can be inserted is formed at the rear end portion of the cylindrical member 30. and, A cylindrical shape is disposed in the cylindrical member 30, a torque canceller 31 that can move in the axial direction, A spiral buffer spring 32 is attached between the front end of the inner peripheral surface of the torque canceller 31 and the rear end of the inner peripheral surface of the cylindrical member 30. The buffer spring 32 acts to push the torque canceller 31 forward. The rotor 26 is urged toward the front by the aforementioned torque canceller 31 that receives the spring force. As above, The rotary drive mechanism 21 of the embodiment of the embodiment, The central portion thereof becomes a space portion through which the core box 3 passes and is isolated from the core box 3, The members indicated by the aforementioned symbols 26 to 32 are integrated and formed into a unit. According to the aforementioned configuration of the rotary drive mechanism 21, When the collet 5 holds the refill, The rotor 26 is formed integrally with the collet 5 via the relay pipe 22, and is rotatable about the axis. then, When the automatic pencil is outside the writing state, By the action of the aforementioned buffer spring 32, Via the aforementioned torque canceller 31, The rotor 26 is pushed forward toward the front. on the other hand, When using a mechanical pencil, that is, When the writing pressure is applied to the refill protruding from the front end tube 9, The collet 5 is reversed against the spring thrust of the buffer spring 32. As the retracting rotor 26 also retreats in the axial direction. therefore, The first cam surface 26a formed in the rotor 26 shown in Fig. 5 is joined to the first fixed projection 18 - 201139161 wheel surface 27a to be engaged. 6(A) to 6(C) and Fig. 7(D)'(E) are the basic actor of the rotary drive mechanism 21 for rotationally driving the rotor 26 in accordance with the above-described operation. In Figures 6 and 7, Symbol 26 is a pattern representing the aforementioned rotor, The first cam surface 26a which is continuously formed in a zigzag shape on one end surface (the upper surface of the figure)' is formed in an annular shape along the circumferential surface. Also on the other end face of the rotor 26 (the lower side of the figure), The second cam surface 26b which is continuously formed in a zigzag shape is also formed in an annular shape along the circumferential surface. on the other hand, As shown in Fig. 6 and Fig. 7, the annular fixed end surface of the upper cam forming member 27 is also formed with a first fixed cam surface 27a which is continuously formed in a zigzag shape along the circumferential direction. The annular fixed end surface of the lower cam forming member 28 is also formed with a second fixed cam surface 28a which is continuously formed in a zigzag shape in the circumferential direction. and, Formed on the first cam surface 26a of the rotor 26, 20th cam surface 26b, The first fixed cam surface 27a formed on the upper cam forming member 27, Each of the cam faces formed in the zigzag shape along the circumferential direction of the second fixed cam surface 28a formed in the lower cam forming member 28 is formed. The pitches are formed in substantially the same manner as each other. In addition, The print of the center portion of the rotor 26 shown in Figs. 6 and 7 is The rotational movement state of the rotor 26 is indicated. Fig. 6 (A) shows the upper cam forming member 27 in a state in which the mechanical pencil is not used (in a state other than the writing state), Rotor 26, The lower cam forms the relationship of the members 28. In this state, The second cam surface 26b forming the rotor 26 abuts against the second fixed cam surface 28a side of the lower cam forming member 28 by the elastic thrust of the buffer spring 32 shown in Fig. 5 . at this time, The first cam surface 26a on the rotor 26 side and the first fixed cam surface 27a, Is set to be in the axial direction, Phase -19 - 201139161 The relationship between one tooth of the cam and the half phase (half pitch). Fig. 6(B) shows an initial state in which the writing pressure is applied to the cartridge by the use of the mechanical pencil. at this time, Via the collet 5 and the relay tube 22, The rotor 26 is retracted in the axial direction to contract the buffer spring 32. With this, The rotor 26 moves on the side of the upper cam forming member 27. Figure 6 (C) shows the application of writing pressure to the refill by the use of a mechanical pencil, a state in which the rotor 26 abuts on the side of the upper cam forming member 27, at this time , The first cam surface 26a formed on the rotor 26 is engaged with the first fixed cam surface 27a on the upper cam forming member 27 side. With this, The rotor 26 is rotationally driven by a half phase (half pitch) corresponding to one tooth of the first cam surface 26a. then, In the state shown in Figure 6 (C), The second cam surface 26b on the rotor 26 side and the second fixed cam surface 28a are set to have a half-phase (half-pitch) deviation with respect to one tooth of the cam in the axial direction. then, Figure 7 (D) shows the end of writing by the mechanical pencil. The initial state of the writing pressure is released from the refill, at this time, By the action of the aforementioned buffer spring 32, The rotor 26 advances in the axial direction. With this, The rotor 26 moves toward the lower cam forming member 28 side. Furthermore, Fig. 7(E) shows the action of the buffer spring 32 described above. a state in which the rotor 26 abuts against the side of the lower cam forming member 28, at this time, The second cam surface 26b formed on the rotor 26 is engaged with the second fixed cam surface 28a on the lower cam forming member 28 side. Thereby, the rotor 26 is again subjected to rotational driving corresponding to the half phase (half pitch) of one tooth of the second cam surface 26b. therefore, As shown in the middle of the rotor 26, With the axial reciprocation of the rotor 26 subjected to the writing pressure, The rotor 26 receives the first and second cam faces 26a corresponding to -20-201139161, a toothed (1 pitch) rotary drive of 26b, Via the aforementioned relay pipe 22, Pipe joint 7 and collet 5, The pen core held by this is also driven by rotation. According to the aforementioned mechanical pencil, According to the writing, the reciprocating motion of the rotor 26 in the axial direction is caused. The rotor is subjected to a rotary motion of a tooth of the corresponding cam during each movement thereof. The rotation is sequentially driven in one direction by the repetition. Therefore, the refills are also rotationally driven in the same order. Therefore, it is possible to prevent the eccentricity of the refill during the continuous writing process, It is also possible to eliminate the problem that the thickness of the drawing line or the shading of the drawing line greatly changes. Furthermore, According to the aforementioned mechanical pencil, Since the front end tube 9 and the slider 8 of the lead are guided, It is operated integrally with the rotor 26 via the pipe joint 7 and the relay pipe 22, Therefore, the back and forward movement of the aforementioned chuck 5 which follows the writing action, The front end tube 9 and the slider 8 move in the same direction via the relay pipe 22. So as the writing moves, Even if the refill is only slightly moved back and forth (buffering action), Since the front end tube 9 guiding the refill also moves in the same direction, So between the front end tube 9 and the refill, Axial relative movement does not occur, The size of the refill coming out of the front end tube 9 can be kept constant. also, Since the front end tube 9 and the slider 8 are coupled to the aforementioned rotor 26 via the relay pipe 22, So when the refill is rotated, The front end tube 9 and the slider 8 are also subjected to a rotational motion. The front end tube 9 is rotated integrally with the refill. therefore, According to the aforementioned mechanical pencil, Can eliminate writing, The size of the refill from the front end tube 9 is a strange feeling caused by the change in the refill each time. Furthermore, It can prevent the pen from the front end tube 9 -21 - 201139161 The change in the size of the core causes the core of the front end tube to break and the core breaks. It also eliminates the problem of so-called contamination of the writing surface caused by the chip of the core. In addition, The cylindrical torque canceller 31 that pushes the rotor 26 forward by the elastic thrust of the helical spring buffer spring 32, Sliding occurs between the front end face of the torque canceller 31 and the rear end face of the rotor 26, This prevents the rotational motion of the rotor 26 caused by the repeated writing action from being transmitted to the buffer spring 32. In other words, By interposing the torque canceller 31 between the aforementioned rotor 26 and the buffer spring 32, The action prevents the rotational movement of the rotor 26 from being transmitted to the aforementioned spring 32 by the aforementioned sliding action, And the occurrence of the so-called torsion return (spring torque) of the spring 32 can be eliminated. There is a problem that the rotation of the rotor 26 is hindered. but, According to the aforementioned rotary drive mechanism 21, The aforementioned cushioning action against the spring force of the buffer spring 32 shown in Fig. 5, In writing, There is a problem that the feeling of "not solid" or "kaka" remains, resulting in a poor touch of writing. In order to eliminate such problems, The adhesive medium is preferably an adhesive grease interposed between the circumferential side surface of the aforementioned torque canceller 31 and the inner circumferential surface of the cylindrical member 30. The torque canceller 31 that moves in the axial direction in the cylindrical member 30 produces a cushioning effect. therefore, As shown in Figure 5, An injection hole 3 Ob of an adhesive grease is formed at a position opposite to the side wall of the cylindrical member 30 at 180 degrees. and, Formed on the side of the torque canceller 3 1 , When the adhesive grease is injected through the aforementioned injection hole 3 Ob, Seal the lubricant, The lubricating oil is allowed to permeate into the entire convex member 31a and the groove portion 31b on the circumferential side surface of the torque canceller 3 1 . -22- 201139161 A more detailed configuration of the above-described cylindrical member 30 and torque canceller 31 and its action will be described with reference to Figs. 8 to 10 . Fig. 8(A) shows the outer casing of the above-described torque canceller 31, 8(B) and 8(C) are cross-sectional views showing the state in which the torque canceller 31 is cut at positions orthogonal to each other in the circumferential direction. The convex member 31a» is formed at a substantially central position opposite to the circumferential side of the circumferential side of the torque canceller 31, respectively, and is axially adjacent to the convex member 31a of the torque canceller 31, A continuous groove portion 31b is formed along the circumferential direction. Further, a peripheral side surface orthogonal to the convex member 31a of the torque canceller 31 is formed with a scraped portion 3 1 c which is processed in a planar direction in the axial direction. Figure 9 is a view for explaining the insertion of the aforementioned torque canceller 31 into the cylindrical member 30, The order of the adhesive grease is injected by the injection hole 3 Ob of the tubular member 30. that is, On the inner circumferential surface of the aforementioned cylindrical member 30, The concave portion 30c of the pair of convex members 31a accommodating the aforementioned torque canceller 31 is along the axial direction. And respectively formed in communication with the aforementioned injection hole 3 Ob. Fig. 9 (A) shows the positional relationship between the two when the adhesive grease 3 is injected into the injection hole 3 Ob of the tubular member 30. In addition, Fig. 10 (A) shows a cross-sectional view seen from the a-a line of Fig. 9 (A) in the direction of the arrow printing. that is, This state, The convex member 31a of the torque canceller 31 is located further forward than the injection hole 30b formed in the cylindrical member 30. In this state, The injection hole 30b is inserted into a front end portion of a nozzle (not shown). The aforementioned adhesive grease is injected. According to this, The lubricating oil is stored in the concave portion 30c of the tubular member 30. Figure 9 (B) shows the injection of adhesive grease, a state in which the torque canceller 3 1 is slightly pushed into the cylindrical member 30, Fig. 10(B) is a cross-sectional view seen from the line b-b of Fig. 9-23-201139161 (B) in the direction of the arrow printing. In this state, Since the convex member 3 1 a of the torque canceller 3 1 moves further rearward than the injection hole 3 Ob of the cylindrical member 30, Therefore, the concave portion 30c formed in the injection hole 30b of the cylindrical member 30 and the cylindrical member 30 is blocked by the convex member 31a of the torque canceller 31, Further, the concave portion 30c is in a sealed state. With this, The inside of the concave portion 30c serves as a lubricating oil reservoir for the adhesive grease. then, Fig. 9(C) shows the state in which the torque canceller 31 is pushed into the cylindrical member 30 again. Fig. 10(C) is a cross-sectional view taken along the line c-c of Fig. 9(C) as seen in the arrowhead direction. In this state, The adhesive grease enclosed in the concave portion 30c of the lubricating oil reservoir, The volume is reduced by the pressure of the push of the torque canceller 31, It enters the aforementioned groove portion 3 lb formed in the torque canceller 31. then, The adhesive grease is immersed in the circumferential side surface of the torque canceller 3 1 via the groove portion 31b. That is, a slight gap between the immersion torque canceller 31 and the cylindrical member 30, And completely penetrated between the two. at this time, The remaining adhesive grease enclosed in the lubricating oil reservoir formed by the concave portion 30c, Is shown in Figure 1, Passing through the aforementioned groove portion 3 1 b to the aforementioned scraping portion 3 1 c formed on the circumferential side surface of the torque canceller 31 The gap with the cylindrical member 30 (represented by the same symbol 3 1 c as the scraped portion). ) and accumulate here. In addition, As the aforementioned adhesive grease, It is best to use a concentration range of 100 to 400, As the above-mentioned adhesive fat or oil, for example, the brand name "Shin-Etsu Rouge" manufactured by Shin-Etsu Chemical Co., Ltd. can be used as appropriate: G3 3 0~3 34, G340 ~ 3 42, G351 ~ 3 53, G631 ~ 63 3 and so on. -24- 201139161 By taking this, The viscous impedance can be imparted to the rapid axial movement of the torque canceller 31, For a relatively slow moving static load, a very small damping function can be imparted to the viscous impedance. therefore, According to the aforementioned constitution, When the torque canceler moves forward due to the release of the writing pressure, An effective buffering function, It is also possible to effectively correct the tactile sensation of writing which is accompanied by the aforementioned buffering action. Other than that, According to the aforementioned constitution, It is easy to perform the injection and coating operation of the adhesive grease for achieving the damping function. Moreover, the amount of the adhesive grease applied to the portion that achieves the damping function can be equalized. Therefore, the unevenness of the buffer characteristics can be extremely reduced. In addition, In the form of the foregoing implementation, A pair of injection holes 30b and concave portions 30c are formed in the cylindrical member 30, respectively. on the other hand, Although the above-described torque canceller 31 is formed with a pair of convex members 31a, However, this is for the convenience of the injection of the adhesive grease and the convenience of the coating operation. Each of these forms one, Can achieve its function. Go back to Figure 2, In the aforementioned rear end portion of the inner shaft 17, A pressing bar 35 as a pressing member is slidably mounted to the rear axle 17, A return spring 36 that presses the rod is disposed in a space between the rear axle 17 and the pressing bar 35. and, An abutting portion 35a having a refill hole for the refill is formed at a rear end portion of the pressing rod 35. In addition, At the rear end of the pressing rod 35, The eraser 37 is detachably mounted, And the pressing cover 38 covering the eraser 37 is detachably attached to the circumferential surface of the rear end portion of the pressing rod 35. The abutting portion 35a of the pressing rod 35 and the rear end portion of the aforementioned core case 3 are predetermined. The spacing forms a composition of confrontation. that is, The core box 3 is not mechanically coupled with the aforementioned pressing rod 3 5 of -25- 201139161, Instead, they are separated by the aforementioned interval. In this configuration, When the pressing operation of the pressing rod 35 is performed, the abutting portion 35a of the pressing rod 35 abuts against the rear end portion of the core case 3, In this way, the core case 3 is pushed forward. With this, As mentioned above, The forward movement of the collet 5 is continuously released from the front end tube 9 by the front end tube 9. Then by the release of the aforementioned pressing operation, Pressing the pressure bar 35 is returned to the state shown in Fig. 2 by the action of the return spring 36. According to the aforementioned constitution, Since the abutting portion 35a formed on the pressing bar 35 and the rear end portion of the aforementioned core case 3 are opposed to each other at a predetermined interval, So even if the writing is for the buffering action, When the chuck 5 and the core box 3 are slightly retracted, The rear end portion of the core case 3 does not collide with the abutting portion 35a of the above-mentioned pressing bar 35, It is possible to prevent a situation in which the rotation operation of the aforementioned rotary drive mechanism 21 is hindered. 11 and 12 show the process of displaying the writing action, An example of the state in which the rotor 26 of the above-described rotation drive mechanism 21 is rotated. that is, 11(A) and (B) are perspective views showing the configuration of the rotor 26 described above which changes the angle. The rotor 26 is desirably formed of a white resin material. The large diameter portion of the first cam surface 26a and the second cam surface 26b of the rotor 26 is formed. A display portion 2 6 c formed of, for example, black is formed at a position opposite to the side surface of the circumference thereof. that is, Along the circumference of the aforementioned large diameter portion, The display portion 26c formed of white and black is formed at intervals of 9 degrees. On the other hand, Fig. 2 (A) and (B) show that the outer cymbal of the mechanical pencil ‘the display portion -26-201139161 26c formed by the white black applied to the rotor 26 described above can be seen from the outside. In this example, The display portion 26 c formed of white black is displayed via the window portion 20 forming a circular shape, (A) indicates that as the rotor 26 rotates, The window portion 20 displays the appearance of the boundary portion between the white and the black of the display portion 26c. And (B) means that as the rotor 26 is further rotated, The black portion of the display portion 26c is displayed in the window portion 20. The above configuration is formed by light-transmitting resins: a lower cam forming member 28 of the rotary drive mechanism 21 shown in Fig. 5 covering the outer side of the rotor 26, The rear axle 17 shown in Fig. 2 located outside the aforementioned rotary drive mechanism 21, Covering the outer outer shaft 18 of the aforementioned rear axle 17 For example, it is possible to realize the above-described circular window portion 20 by applying a smear treatment to the circumferential side surface of the rear shaft 17 described above. Thus, the manner in which the rotational state of the rotor 26 can be seen from the outside is formed. In the operation confirmation check of the manufacture and assembly of the automatic pencil, The judgment of the rotation drive mechanism can be easily made by visual observation. It also has a taste or a pleasure for the user to use. It can also help to make a big difference in the product. However, in the aforementioned rotary drive mechanism 21, As explained, Due to the writing pressure, Rotating the rotor 26 in the axial direction (buffering action), The first and second cam faces 26a formed on the rotor 26, 2 6b and the first and second fixed cam faces 27a, 28a bite each other, The refill is driven by rotation. Therefore, the rotary drive mechanism 21 formed in the foregoing configuration, On the way of the retreating motion of the rotor 26 caused by the writing pressure, And on the way of the forward movement of the rotor 26 caused by the release of the writing pressure, First and second cam faces 26a on the rotor side, 2 6b from the first and second fixed cam faces 27a, respectively 2 8 a left, The rotor 26 is instantaneously opened in the direction of rotation -27-201139161. In this moment, Subject to slight external force or vibration, etc. The rotor 26 may be trapped in a rotation failure. that is, As a result of trials and verifications by the inventors, it was confirmed that there was no possibility that the cam teeth on the rotor side could be placed on the next cam teeth on the fixed side of the half pitch. therefore, In the state in which the aforementioned phenomena occur successively, It is also expected that the refill cannot be rotated. 13 to 15 are diagrams for explaining countermeasures, This is shown in Figure 8 to Figure 10, Between the cylindrical member 30 and the torque canceller 31, After the damping function is formed by the adhesive grease, This is performed when the aforementioned rotary drive mechanism 21 is assembled. that is, Figure 13 shows the final assembly work of the rotary drive mechanism 21 in which the cylindrical member 30 is fitted into the upper cam forming member 27, The adhesive grease G is applied to the cylindrical portion of the rotor 26 housed in the upper cam forming member 27 in the circumferential direction. In this state, The end portion of the upper cam forming member 27 is slightly inserted into the opening portion of the aforementioned simple member 30, As shown in Figure 14. The adhesive grease G is closed in a space formed between the opening of the tubular member 30 and the end of the upper cam forming member 27. Furthermore, As shown in Figure 15, The end peripheral side surface of the upper cam forming member 27 is fitted to the inner surface of the opening of the cylindrical member 30, The manner in which the rotary drive mechanism 21 is assembled, The adhesive grease G enters between the upper cam forming member 27 and the cylindrical portion of the rotor 26. With this, The rotor 26 is provided with a viscous impedance in the rotational direction by the above-mentioned adhesive grease G. According to the aforementioned constitution, Since the rotor 26 is provided with a slight viscous impedance in the direction of rotation by the adhesive grease G, the rotor 26 is in a free state in the direction of rotation as described above, -28-201139161. Even if it is subjected to vibration, etc. The rotor 26 can also be held by the adhesive grease G. also, When the first or second cam surface of the rotor 26 is engaged with the first or second fixed cam surface, It does not affect its rotation. With this, Available and written, A mechanical pencil that does perform the rotation of the refill. In addition, The above-mentioned adhesive grease G which imparts a viscous impedance in the direction of rotation of the rotor 26, The same grease as the adhesive grease for imparting a damping function to the above-described torque canceller 31 can be used. In the form of the implementation described above, In the relationship that the barrel is fitted with a relatively thick grip member, The reel drive mechanism 21 of the refill is housed in the rear axle 17 rearward than the mounting position of the grip member. The rotary drive mechanism 21 is coupled to the chuck 5 via a relay pipe 22. As in this example, When using a relatively long relay tube 22, The relay tube 22 is made of the flexible material described above, together with the core box 3. For example, it is preferably formed of polypropylene or the like. a relay tube 22 formed using the aforementioned flexible material, Even if there is an error in the forming of the components constituting the rotary drive mechanism 21 or an error in its assembly, And eccentricity caused by the mutual connection of the rotary driving portions of the refill including the relay pipe 22 or the collet 5, It is also possible to utilize the flexibility characteristics of the aforementioned relay pipe 22, Ensure the normal rotation drive action of the refill. In addition, The mechanical pencil of the present invention is a longer relay tube as shown in the embodiment. Although it will play a particularly significant effect, But not limited to this, Even with a shorter relay tube, You can also enjoy the same effect with a small degree. -29- 201139161 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a front half of a mechanical pencil of the present invention. Fig. 2 also shows a cross-sectional view of the rear half. Fig. 3 is a front elevational view and a central sectional view showing the continuous release unit of the refill and the rotary drive mechanism of the refill. 4 is a cross-sectional view showing the configuration of a front axle and a grip member. Fig. 5 is an enlarged cross-sectional view showing the rotary drive mechanism of the refill. Fig. 6 is a schematic view showing the rotation driving action of the rotor provided in the rotation drive mechanism in order. Fig. 7 is a schematic view showing the rotational driving action of the rotor, continued from Fig. 6; Fig. 8 is a perspective view and a cross-sectional view of the outer side of the torque canceller provided in the rotary drive mechanism. Fig. 9 is a cross-sectional view showing the relationship between the torque canceller provided in the rotary drive mechanism and the cylindrical member. Figure 10 is taken from line a-a of Figure 9, A cross-sectional view of the b-b line and the c-c line as viewed in the direction of the arrow. Fig. 11 is a perspective view showing the rotor of the angle of the configuration example of the display unit for changing the rotation state of the rotor. Figure 2 is an external view of the mechanical pencil of the present invention showing the state of rotation of the rotor. Figure 13 is a cross-sectional view illustrating the final assembly work of the rotary drive mechanism. Figure 14 is a cross-sectional view continuing to illustrate the assembly process of Figure 13. Figure 15 is a cross-sectional view continuing to illustrate the assembly process of Figure 14. -30- 201139161 [Key component symbol description] 1 : Pen tip (pen tip) 2 : Front axle (shaft) 3 : Core box 5 : Chuck 6 : Clips 8 : Slide 1 3 : Grip member 1 4 : Shaft joint 1 7 : Rear axle (shaft barrel) 1 8 : Outer shaft 2 1 : Rotary drive mechanism 22 : Relay member (relay tube) 24 : Shaft spring 26 : Rotor 26a: First cam surface 26b: 2nd cam surface 2 7 : Upper cam forming member 2 7 a : The first fixed cam surface 28: Lower cam forming member 28a: Second fixed cam surface 30: Cylindrical member 3〇b : Injection hole 30c: Concave part (space part) -31 201139161 31 : Torque eliminator 3 1 a : Convex member 3 1 b : Groove 3 1c : Scratch part (2nd space part) 3 2 : Buffer spring 35: Pressing the bar (pressing member) 3 6 : Return spring 37 : Eraser 38 : Press cover -32-