捌、新型說明： 【新型所屬之技術領域】 本創作係關於一種腳踏車座位支柱，尤其係關於利用 螺緊方式使鞍座安裝夾具固定於頭部的腳踏車座位支柱。 【先前技術】 如第7圖所示，一般腳踏車鞍座（2〇)係藉著座位支柱 (I) 安裝於腳踏車車架本體（21)。 座位支柱（1)係具備：上端設有頭部（13)的筒狀支柱本 體（10);及以固·定螺栓（14)螺緊於上述頭部（13)的上下輕 座夾（11)(12)，並且將設置於上述鞍座（2〇)下部之兩支安 裝用線材（2)(2)的大致中心部分，夾持在由上述上鞍座夾 (II) 與下鞍座炎（12 )彼此相對的兩側部上所形成的一對溝 部（11a)(12a)間的狀態下，藉由鎖緊上述固定螺栓（14)， 使上述鞍座（20)透過上下鞍座夾（11)(12)固定於座位支柱 (1)上端。 並且，藉由固定螺栓（14)螺合在設置於上鞍座夾（u) 上方的螺帽（未圖示），或者與形成於上鞍座夾大致中 央部的母螺絲部（15)螺合，使上下鞍座夾（11)(找）與頭部 (13)得以一體固定。 如第7圖所示，藉著配設於後方之一支固定螺栓（14) 來鎖緊固定的構造中，用以固定上下鞍座夾（11)(12)之頭 部（13)的鞍座夾支持部（i3a)因為係得以供·固客螺栓（14) 貫穿，故可設置於比支柱本體（1〇)更靠後方的位置。因此， 支柱本體（1〇)上端的中心與被上述固定螺栓（14)貫穿螺合 之上下鞍座夾（11)(12)的中心會相差預定距離。此種支柱 本體（10)上端之中心點至上下鞍座夾dDdZ)之中心點間 的距離乃稱為偏移量（S)。 利用上述位於後方之一支固定螺栓（14)來固定的構 造中，必然設定有一定的偏移量（S)，但是如第8圖所示， 令鞍座夾支持部（13a)(13a)分別朝頭部（13)的前後方向突 出相同的長度，並使兩支固定螺栓（14)(14)分別貫穿其 中’且利用上述兩支螺栓（14)(14)及與其對應的兩個螺帽 (16)(16)來固定上下鞍座夾（11)(12)的構造中，上述偏移 量（S)幾乎無法形形成。 鞍座（20)的位置調整範圍係依據該偏移量（s)而不同。 如上述第7圖所示，利用僅於後方配設的固定螺栓（η) 以將鞍座（20)安裝於頭部（13)的構造中，上述安裝用線材 (2)的中心（與上下鞍座夾（h)(12)的中心大略一致），係以 預定偏移量（S)偏靠於支柱本體（1〇)中心的後方；而在如第 8圖所示利用配設於前後方之固定螺栓（14)來安裝鞍座（2〇) 的構造中，則不能形成偏移量（S)，而是在安裝用線材（2) 的中心與支柱本體（10)上端中心大致吻合的形態下安裝鞍 座。 (新型所欲解決之課題） 在第7圖或第8圖之任一種情形中，由於鞍座（2〇)對 於支柱本體（10)的安裝位置係藉由座位支柱（1)的偏移量 (S)所決定，所以欲將鞍座（2〇)從預定安裝位置稍微往前方 挪移，或相反地往後方挪移時，則必須將上下鞍座夾 M242435 (11)(12)所夾持之安裝用線材（2)的位置往前後挪移。 用上下鞍座夾（11)(12)來夾持時，鞍座（2〇)的安裝位 置不只侷限在上述鞍座（20)之安裝用線材（2)中央部分的 一個部位，亦包含了上述線材（2)直線部分的預定範圍。因 此’雖然可藉由將安裝用線材（2)相對於上下鞍座夾 (11)(12)的溝部（lla)(12a)往前後方向挪移，俾在安裝用 線材（2)之上述預定範圍内朝前後方向調整鞍座（2〇)的安 裝位置’但是為了防止腳踏車行走時不經意地彎曲，而將 上下鞍座夾（11)(12)夾持固定在明顯偏移安裝用線材（2) 直線部分的位置並非為理想的狀態。因此，為了穩定地安 裝鞍座（20)，習知的座位支柱中，鞍座（2〇)的安裝位置必 然按照其偏移量（S)而設定於上述安裝用線材（2)的預定範 圍内。 習知的座位支柱中，亦藉由在上述鞍座夾支持部（i3a) 之形成範圍内改變供較螺栓貫穿的貫穿孔位置，使上述 偏移量⑻得以作某程度的變更。然而，因為頭部⑽必需 穿设上述貫穿孔，其形成位置必需偏靠支柱本體⑴的外 習知構造的座位支柱中，會產生偏移量在一定 里以上時即無法將其擴大或縮小的限制。 【新型内容】 本創作係在『由：筒狀支柱本體；設置於上述支柱本 ===部；裝設於上述頭部，用以結合鞍座之安裝用 鞍座夾；以及貫穿上述頭部，同時將上述鞍座夾固 疋於上述頭部的固㈣栓等所構成的腳踏車座位支柱』 7 中，以提供一種具有超越習知限制之偏移量的座位支柱 其課題。 … (解決課題之手段） 本創作用以解決上述課題的技術手段如下。 於上述支柱本體的上部區域外周面，具有可收容一 部分或全部上述固定螺栓之深度的凹溝係朝上方敞開而形 成， 與上述凹溝之上方敞開部對應的上述頭部，貫穿有固 定螺栓穿通孔。』 上述技術手段的作用如下。 依據形成於上述支柱本體的凹溝深度，固定螺栓得以 在其一部分或全部收容於上述凹溝的狀態下，平行於上述 支柱本體的軸線。並且，在收容於上述凹溝内的狀態下， 經由對應於上述敞開部之頭部所形成的固定螺栓穿通孔， 將鞍座夾螺緊於上述頭部上面。亦即，習知構造之頭部的 鞍座夾支持部中，僅可設置於由支柱本體外周面突出部分 的固定螺栓，得以設置於支柱本體外周面的内側。因此， 在固定螺栓僅可設於支柱本體後方的情況中，超過某一定 1以上即無法再縮小的偏移量可以設得更小，而可將鞍座 夾中心按照上述凹溝深度大小挪到習知構造的更前方來安 裝。因此，固定於其上的鞍座位置亦得以固定成向前挪移 預定距離的狀態。又，在支柱本體的前後分別配設固定螺 检的情況中，因為可將幾乎無法辨識的偏移量按照上述凹 溝的深度加大設定，所以在支柱本體前侧設置上述凹溝的 M242435 構造中，鞍座夾中心會較習知構造更向前方挪移，故固定 於其上的鞍座亦可形成比支柱本财心、更向前移動預定距 離的狀態。同樣的，將上述凹溝設置於支柱本體後側的構 造中，由於鞍座夾中心亦會較習知構造更向後移動，所以 固定於其上的鞍座亦得以設^在比支柱本體中心更向後方 移動預定距離的狀態。 並且’上述凹溝係如申請專利範圍第2項所示『藉由 車削加工上述支柱本體的外表面而形成』的構造中，上述 支柱本體為實心棒體時尤有效果。如申請專利範圍第3項 所示『上述凹溝係藉由播製成型材加工而形成』的構造，、 或如申请專利範圍第4項所示『上述凹溝係藉由鍛造沖 壓等塑性加工而形成』之構造均可使用。 _『=凹溝’亦可如中請專利範圍第5或6項之創作所 不’形成於上述支柱本體之前側或後側的卜邊』，或者， 利範圍第7或8項之創作所示，『形成於上述支柱 之則側或後側兩邊』任一個構造皆 數 量並沒有任何限/成_之固㈣㈣通孔的數 如申請專利範圍第9至14項之創作所示，在.海 部係與上述支柱本體一體成型』的構造中，為了調▲广 的位置’可更換整個鞍座支柱本體專η 至2 0箱夕制从私- 月寻刊粍圍第15 製成』的構、生巾""’在上述頭㈣與上述支柱本體各別 = 力效7’可僅更換支柱本體或頭部之任-個。 M242435 依據上述構造，本創作具有如下之特殊效果。 藉由採用具有凹溝之支柱本體，得以將固定螺栓靠近 支柱本體中心而配設，所以可提供各種不受具有習知限制 之偏移量的座位支柱。例如··可事先準備複數種凹溝形成 位置及深度不同的支柱本體，依據騎士的喜好靈活運用， 並且，在固定螺栓僅配設於後方且具有頭部的座位支柱， 或者固定螺栓分別配設於前後且具有頭部的座位支柱中， 皆可在維持以鞍座夾夾持在鞍座安裝用線材之預定範圍的 穩定安裝態樣下，將鞍座位置往前方或後方挪移以調整成 騎士喜好的位置。 又’因為可將固定螺栓穿通孔設定在支柱本體外周面 的内侧’故可將頭部及鞍座夾前後方向的長度設成小於習 知構造，而可縮小座位支柱整體的體積。因此，得以減少 材料而實現座位支柱的輕量化。 【實施方式】 繼之’參考圖式詳細說明上述本創作之實施型態。 如第1圖所示，本創作第1實施型態之腳踏.車座位支 柱係由：支柱本體（31)，嵌入腳踏車車架本體（21)内；頭 部（32)，與支柱本體（31)各別設置，且嵌入並安裝於支柱 本體（31)的上端；上下鞍座夾（11)(12)，安裝於頭部（32) 上面的鞍座夾支持部（33)，且從上下方向將鞍座（20)之安 裝用線材（2)夾持在其間；以及一固定螺栓（14)，用以使上 述上下鞍座夾（11)(12)固定於頭部（32)之鞍座夾支持部 10 (33)。 尤其，本實施型態之上述支柱本體（31)係為一種在外 周面上部區域的車體後方側，以平行於其轴線且朝上方敞 開之方式形成有凹溝（30)的變形筒體。上述凹溝（30)的深 度設定成上述固定螺栓（14)沿著凹溝（30)收納時，固定螺 栓外周之一半左右得以沒入其中’並且在對應於上述凹溝 (30)上方之頭部（32)預定位置，連續形成有供貫穿固定螺 栓（14)的貫穿孔（3)。 並且，如第2圖所示，上述凹溝（30)係藉由預先將上 述支柱本體（31)鍛造成型，使上述支柱本體（31)構成壁的 邛刀呈凹陷狀態而構成者，並且在頭部（32)的下面設有 嵌合軸（32a)，而該嵌合轴（32a)所具有之剖面形狀係大致 勿&因支柱本體（31)設置凹溝（30)而變形之支柱本體（31) 上端内部形狀。藉由將該嵌合軸（32a )嵌入支柱本體（31)上 端的敞開部而呈密嵌狀態，得以使頭部（32)形成一體安裝 於支柱本體（31)上端的狀態。 本實施型態的座位支柱中，藉由在支柱本體（31)形成 凹溝（30)，可將習知的座位支柱中僅能設置於支枉本體外 側的固定螺栓（14)配設於支柱本體（31)的筒内>籍此結 構，可按照凹溝（30)的深度，令上下鞍座夾(11)(12)的中 心接近支柱本體（31)的中心而固定。換言之，可將偏移量 設成小於習知的限制值。因此，可按照偏移量較第7圖所 示之習知構造更小的偏移量，將鞍座（2〇)的安裝位置向前 ...- 挪移而固定。 又，本實施型態中，因為供固定螺栓（14)貫穿之貫穿 M242435 孔（3)得以設置在比支柱本體（31)的外周面更靠内側的位 置，所以可減少頭部（32)向後方突出的程度。藉此結構， 因為鞍座夾支持部（33)亦變小，所以上下鞍座夾（11)(12) 也會跟著變小。亦即，可縮小頭部（32)整體及上下鞍座夾 (11)(12)的體積，所以可按其縮小程度達成輕量化，而使 座位支柱（1)整體精巧化。 並且，固定螺栓（14)的頭部（14a)係設定在可以某種程 度的餘隙收容於凹溝（30)内的尺寸關係，故固定螺栓（14) 可依據其頭部的形狀，在收容於凹溝（30)内的狀態下，利 用扳柑、螺絲起子或六角扳手等工具，將其從螺栓本體（3D 後方鎖緊。 又，固定螺栓（14)穿過頭部（32)的貫穿孔（3)及下鞍座 夾（12)後，螺合於設定在上鞍座夾（11)中央的母螺絲部（15) 並加以固定。 上述實施型態中，係於支柱本體（31)的後方設置一個 凹溝（30)及一個固定螺栓（14)，然而亦可如第3圖至第6 圖之各圖所示地施行各式各樣的變形。 例如，第3圖所示之構造係僅在支柱本體的後方 配設固定螺栓（14),第3圖（a)係在上述實施型態之座位支 柱（1)上所配設的固定螺栓（14)後方再設置一支固定螺栓 (14)，並用此等兩支螺栓（14)將上下鞍座夾（11)(12)螺緊 於頭部（32)。第3圖（b)係表示利用並列於後方左右的兩支 固定螺栓（14)來固定上下鞍座夾（h)(12)，且於支柱本體 (14)的後方設置兩個凹溝（30)。第3圖（〇係表示於上述第 12 M242435 3圖（b)的後方再設置一支固定螺栓（14)，並利用3支固定 螺栓（14)來固定。第3圖（d)係表示使兩支固定螺栓（14)左 右並列設置於上述第3圖（a)的後方的構造。 第4圖係表示於支柱本體（31)的前後兩側配設有固定 螺栓（14)之各種座位支柱（！）的變形構造，其中，第4圖 (a)及第4圖（b)係表示於前後方各配設一支固定螺栓（14) 的構造’第4圖（a)係表示僅在支柱本體（31)的前方設置凹 溝（30)的構造，第4圖（b)係表示在支柱本體（31)前後兩側 没置凹溝（30)的構造。第4圖（c)及第4圖（d)係表示在支 柱本體（31)的前方配設一支，在後方配設兩支而合計有三 支固定螺栓（14)的構造。再者，第4圖（e)及第4圖（f)係 表示在支柱本體（31)的前方配設兩支，在後方配設兩支而 合計有四支固定螺栓（14)的構造，第4圖（e)係表示僅在支 柱本體（31)的前後設有兩個凹溝（3〇),第4圖（〇係表示在 支柱本體（31)前後兩側分別設有兩個凹溝（3〇)。 並且’上述各變形亦可形成前後方向顛倒的構迻，當 然，透過凹溝（3〇)與固定螺栓（μ)的組合，可推知還有許 多其他的變形。 如上述各變形構造所示，藉由在支柱本體（3Ϊ)設置至 少一個凹溝（30)，可提供具有超越習知限制之偏移量的座 位支柱。例如，於支柱本體（31)後側設置凹溝（3〇)的構造 中:鞍座（20)得以固定於較習知固定位置稍微偏靠前方的 狀態，反之，於支柱本體（31)前側設置凹溝（3〇)的構造中， 鞍座（20)得以固定於偏靠後方的狀態。因此，藉由選擇具 13 M242435 有適當偏移量的鞍座支柱，可使鞍座固定位置符合腳踏車 騎士的喜好，而得以提供比習知構造更具舒適騎乘感的腳 踏車。 又’藉由在任一個變形構造中皆設置至少一個凹溝· (30) ’得以構成比習知構造更小的頭部（32)及上下鞍座夾 (11)(12) ’尤其’在第4圖（b)及第4圖（〇的構造中，於 支柱本體（31)的前後兩側皆形成有凹溝（3〇)，所以得以提 供最精巧化及輕量化的支柱本體（31)。 此外’雖然上述各實施型態中，係使中空筒狀的支柱 本體（31)表面以凹陷狀態形成凹溝（3〇)，然而亦可如第5 圖所示在實心棒狀之支柱本體（31)上藉由車削加工形成凹 溝（30)。 若凹溝（30)車削的較淺，則可收容一部分的固定螺栓 (14)，若削的較深，則可收納全部的固定螺栓（14)。此外， 亦可藉由鍛造·沖壓等塑性加工來形成凹溝。 再者，如第6圖所示，若在實心棒狀支柱本體（31)中 心的前後任一方或者偏靠兩側的位置上，形成朝上方形成 開口且具有可收納固定螺栓（14)之直徑及深度的孔，則可 構成通道狀的凹溝（3〇)。 上述各變形所採用的複數固定螺栓〇4)中，尤其欲將 微調整用螺栓暫時固定時，也可用手來鎖緊。在此情況下， 若採用頭部具有滾花或蝶狀螺絲等的固定螺栓，則可用手 容易地旋轉，或用手來鎖緊。 又’第6圖所示之支柱本體（31)必須與頭部（32)各別 14 M242435 構成，但是其他變形中，採用支柱本體（31)與頭部（32)各 別構成或一體構成皆可。 M242435 【圖式簡單說明】 第1圖係本創作第1實施型態之座位支柱與固定於該 座位支柱之鞍座的部分剖開剖視圖。 第2圖係省略鞍座部分之第丨圖χ_χ線剖視圖。 第3圖係固定螺栓配設於支柱本體後方之座位支柱變 形構造中，表示支柱本體、固定螺栓與頭部之關係的構成 圖。 第4圖係固定螺栓配設於支柱本體前後方之座位支柱 變形構造中，表示支柱本體、固定螺栓與頭部之關係的構 成圖。 第5圖係表示支柱本體之其他實施例的剖視圖。 第6圖係表示支柱本體之另一其他實施例的剖視圖。 第7圖係表示習知座位支柱構造的分解斜視圖。 第8圖係表示其他習知座位支柱例的分解斜視圖。 【符號說明】 (I) 座位支柱 (3)貫穿孔 (II) 上鞍座夾 (12)下鞍座夾 (13a)、（33)鞍座夾支持部 (14a)固定螺栓的頭部 (20)鞍座 (30)凹溝 (2)安裝用線材 (10)、（31)支柱本體 (11a)、（12a)溝部 (13) 、（32)頭部 (14) 固定螺栓 (15) 母螺絲部 (21)車架本體 (32a)後合轴 16说明 Description of the new type: [Technical field to which the new type belongs] This creation relates to a bicycle seat pillar, and more particularly to a bicycle seat pillar in which the saddle mounting fixture is fixed to the head by means of screwing. [Prior Art] As shown in FIG. 7, a general bicycle saddle (20) is mounted on a bicycle frame body (21) via a seat post (I). The seat pillar (1) is provided with: a cylindrical pillar body (10) provided with a head (13) at the upper end; and an upper and lower light seat clamp (11) screwed to the head (13) with fixing and fixing bolts (14). ) (12), and the two mounting wires (2) (2) provided at the lower part of the saddle (20) are clamped between the upper saddle clamp (II) and the lower saddle. Yan (12) In a state between a pair of grooves (11a) (12a) formed on two opposite sides of each other, the saddle (20) is made to pass through the upper and lower saddles by locking the fixing bolt (14). The clips (11) (12) are fixed on the upper end of the seat post (1). Furthermore, a nut (not shown) provided above the upper saddle clip (u) is screwed with a fixing bolt (14), or is screwed with a female screw portion (15) formed at a substantially central portion of the upper saddle clip. The upper and lower saddle clamps (11) (finding) and the head (13) can be fixed integrally. As shown in FIG. 7, the saddle for fixing the head (13) of the upper and lower saddle clamps (11) (12) is locked in a fixed structure by a fixing bolt (14) arranged at the rear. The seat clamp support portion (i3a) can be installed through the gut bolt (14), so it can be installed further behind the pillar body (10). Therefore, the center of the upper end of the pillar body (10) and the center of the upper and lower saddle clamps (11) (12) penetrated and screwed by the above-mentioned fixing bolts (14) may differ by a predetermined distance. The distance between the center point of the upper end of the pillar body (10) and the center point of the upper and lower saddle clamps (dDdZ) is called the offset (S). In the structure fixed by the above-mentioned one fixing bolt (14) located at the rear, a certain offset (S) is necessarily set, but as shown in FIG. 8, the saddle clamp support portion (13a) (13a) The same length is protruded toward the front and rear directions of the head (13), and the two fixing bolts (14) (14) are penetrated respectively through the above two bolts (14) (14) and the corresponding two screws. In the structure in which the caps (16) and (16) are used to fix the upper and lower saddle clips (11) (12), the above-mentioned offset (S) can hardly be formed. The position adjustment range of the saddle (20) is different according to the offset (s). As shown in FIG. 7 above, in the structure in which the saddle (20) is mounted on the head (13) using the fixing bolt (η) provided only at the rear, the center of the mounting wire (2) (upper and lower) The center of the saddle clamp (h) (12) is almost the same), which is biased to the rear of the center of the pillar body (10) by a predetermined offset (S); In the structure where the square fixing bolt (14) is used to install the saddle (20), the offset (S) cannot be formed, but the center of the installation wire (2) and the center of the upper end of the pillar body (10) are approximately matched. The saddle is installed under the shape. (New type of problem to be solved) In any of the cases shown in FIG. 7 or FIG. 8, the mounting position of the saddle (20) to the pillar body (10) is caused by the offset of the seat pillar (1). (S), so if you want to move the saddle (20) slightly forward from the intended installation position, or vice versa, you must clamp the upper and lower saddle clamps M242435 (11) (12) The position of the installation wire (2) is moved forward and backward. When the upper and lower saddle clamps (11) and (12) are used for clamping, the installation position of the saddle (20) is not limited to only a part of the central part of the installation wire (2) of the saddle (20), but also includes A predetermined range of the linear portion of the above-mentioned wire (2). Therefore 'Although the installation wire (2) can be moved forward and backward with respect to the groove portion (lla) (12a) of the upper and lower saddle clamps (11) (12), it can be placed in the predetermined range of the installation wire (2)' Adjust the mounting position of the saddle (20) inward and backward. 'However, in order to prevent the bicycle from inadvertently bending while walking, the upper and lower saddle clamps (11) (12) are clamped and fixed on the wire (2) which is obviously offset from the installation The position of the straight portion is not ideal. Therefore, in order to stably install the saddle (20), the mounting position of the saddle (20) in the conventional seat pillar is necessarily set within the predetermined range of the above-mentioned installation wire (2) according to the offset (S) thereof. Inside. In the conventional seat pillar, the position of the through hole for the penetration of the bolt is changed within the formation range of the saddle clip support portion (i3a), so that the offset 偏移 can be changed to a certain degree. However, because the head ⑽ must pass through the above-mentioned through hole, its formation position must be leaned against the seat structure of the conventionally known structure of the pillar body ⑴. If the offset is more than a certain distance, it cannot be enlarged or reduced. limit. [New content] This creation is based on "from: a cylindrical pillar body; installed on the above pillar book ===; installed on the above head, used to combine the saddle clip for the installation of the saddle; and penetrating the above head At the same time, the saddle is clamped to the bicycle seat pillar “7” composed of the head anchor bolt and the like to provide a seat pillar with an offset exceeding the conventional limit. … (Means to Solve the Problem) The technical methods used to solve the above-mentioned problems are as follows. A groove having a depth capable of accommodating part or all of the fixing bolt is formed on the outer peripheral surface of the upper region of the pillar body and is opened upward. The head corresponding to the opening above the groove is penetrated by the fixing bolt. hole. The effect of the above technical means is as follows. Depending on the depth of the groove formed in the pillar body, the fixing bolt can be parallel to the axis of the pillar body in a state where part or all of the fixing bolt is received in the groove. Furthermore, in a state of being accommodated in the groove, the saddle clip is screwed on the upper portion of the head through a fixing bolt through hole formed in the head corresponding to the open portion. That is, the saddle clip support portion of the head of the conventional structure can be provided only on the inner peripheral surface of the pillar main body by fixing bolts protruding from the outer peripheral surface of the pillar main body. Therefore, in the case that the fixing bolt can be provided only behind the pillar body, the offset that cannot be reduced beyond a certain 1 or more can be set smaller, and the center of the saddle clamp can be moved to the depth of the groove above. Install the front of the conventional structure. Therefore, the position of the saddle fixed to it can also be fixed in a state of moving forward by a predetermined distance. In addition, when fixed screw inspections are provided at the front and back of the pillar body, the almost indistinguishable offset can be increased according to the depth of the groove. Therefore, the M242435 structure is provided with the groove at the front side of the pillar body. In the middle, the center of the saddle clamp will move more forward than the conventional structure, so the saddle fixed to it can also form a state that moves a predetermined distance forward than the original financial center of the pillar. Similarly, in the structure in which the above-mentioned groove is provided on the rear side of the pillar body, the center of the saddle clip will move more backward than the conventional structure, so the saddle fixed to it can also be set more than the center of the pillar body. A state of moving backward by a predetermined distance. In addition, the above-mentioned groove is particularly effective when the pillar body is a solid rod body in a structure "formed by turning the outer surface of the pillar body" as shown in item 2 of the scope of patent application. As shown in item 3 of the scope of patent application, the structure of "the above-mentioned groove is formed by sowing profile processing", or as shown in item 4 of the scope of the patent application, "the above-mentioned groove is formed by plastic working such as forging and stamping. The formation of the structure can be used. _ "= Grooves" can also be used in the creation area of the patent scope item 5 or 6 not to be formed on the front side or the back side of the pillar body ", or the creative scope area of the 7th or 8th scope. As shown, the number of solid holes formed on any of the structures "formed on either the side of the pillar or on the back side" is not limited in number / as shown in the creation of items 9 to 14 in the scope of patent application. In the structure of “Maibu Department integrated with the above-mentioned pillar body”, in order to adjust the wide position, the entire saddle pillar body can be replaced with “20 to 20 boxes. It is made by the private-monthly hunting magazine No. 15”. "Health towel" "In the above-mentioned headband and the above-mentioned pillar body respectively = force effect 7 ', only one of the pillar body or the head can be replaced. M242435 Based on the above structure, this creation has the following special effects. The use of a pillar body having a groove allows the fixing bolts to be arranged near the center of the pillar body, so that various seat pillars can be provided without a conventionally-defined offset. For example, a plurality of pillar bodies with different groove formation positions and depths can be prepared in advance, which can be flexibly used according to the knight's preference, and the fixing bolts are only arranged at the rear and the seat pillars with heads, or the fixing bolts are separately arranged In the front and rear seat pillars, the position of the saddle can be moved forward or backward to maintain a stable installation state in which the saddle clip is held in a predetermined range of the saddle installation wire. Cavaliers favorite position. Further, since the through holes of the fixing bolts can be set inside the outer peripheral surface of the pillar body, the length of the head and the saddle clip in the front-rear direction can be made shorter than the conventional structure, and the volume of the entire seat pillar can be reduced. As a result, the weight of the seat pillar can be reduced by reducing the material. [Embodiment] The following describes the implementation mode of the above-mentioned creation in detail with reference to the drawings. As shown in Fig. 1, the pedal of the first embodiment of this creation. The seat pillar is composed of: the pillar body (31), embedded in the bicycle frame body (21); the head (32), and the pillar body ( 31) Separately installed and embedded in the upper end of the pillar body (31); upper and lower saddle clips (11) (12), mounted on the saddle clip support (33) above the head (32), and from Clamp the wire (2) for mounting the saddle (20) in the up-down direction; and a fixing bolt (14) for fixing the upper and lower saddle clips (11) (12) to the head (32) Saddle clip support 10 (33). In particular, the above-mentioned pillar body (31) of the present embodiment is a deformed cylindrical body having a groove (30) formed on the rear side of the vehicle body in the upper region of the outer peripheral surface and parallel to its axis and opened upward. . The depth of the groove (30) is set such that when the fixing bolt (14) is accommodated along the groove (30), about one and a half of the outer periphery of the fixing bolt is submerged into it 'and the head corresponding to the above groove (30) A predetermined position of the portion (32) is continuously formed with a through hole (3) through which the fixing bolt (14) is inserted. In addition, as shown in FIG. 2, the groove (30) is formed by forging the pillar body (31) in advance so that the trowel constituting the wall of the pillar body (31) is in a recessed state, and A fitting shaft (32a) is provided under the head (32), and the cross-sectional shape of the fitting shaft (32a) is substantially a pillar which is deformed by the groove (30) provided on the pillar body (31). Internal shape of the upper end of the body (31). The fitting shaft (32a) is fitted into the open part of the upper end of the pillar body (31) to be in a close fitting state, so that the head (32) can be integrally mounted on the upper end of the pillar body (31). In the seat pillar of this embodiment, by forming a groove (30) in the pillar body (31), a conventional seat pillar can be provided with a fixing bolt (14) that can be provided only on the outside of the support body. In the barrel of the body (31) > With this structure, the center of the upper and lower saddle clips (11) (12) can be fixed close to the center of the pillar body (31) according to the depth of the groove (30). In other words, the offset can be set smaller than the conventional limit value. Therefore, the installation position of the saddle (20) can be moved forward and fixed according to a smaller offset than the conventional structure shown in FIG. 7. In addition, in this embodiment type, since the through-hole M242435 hole (3) through which the fixing bolt (14) passes is disposed more inward than the outer peripheral surface of the pillar body (31), the direction of the head (32) can be reduced. The degree of rear protrusion. With this structure, since the saddle clip supporting portion (33) also becomes smaller, the upper and lower saddle clips (11) (12) also become smaller accordingly. That is, since the volume of the entire head (32) and the upper and lower saddle clips (11) (12) can be reduced, the weight can be reduced according to the degree of reduction, and the entire seat post (1) can be made compact. In addition, the head (14a) of the fixing bolt (14) is set in a dimensional relationship that can be accommodated in the recess (30) to a certain degree. Therefore, the fixing bolt (14) can be formed in accordance with the shape of the head. In a state of being housed in the groove (30), use a wrench, screwdriver, or hexagon wrench to lock it from the bolt body (3D rear. The fixing bolt (14) passes through the head (32). After the hole (3) and the lower saddle clamp (12), the female screw portion (15) set in the center of the upper saddle clamp (11) is screwed and fixed. In the above embodiment, it is tied to the pillar body (31). ) Is provided with a groove (30) and a fixing bolt (14) at the rear, but various deformations can also be performed as shown in each of FIGS. 3 to 6. For example, as shown in FIG. 3 The structure is provided with a fixing bolt (14) only at the rear of the pillar body, and FIG. 3 (a) is a rear of the fixing bolt (14) provided on the seat pillar (1) of the above embodiment. Fix the bolts (14), and use these two bolts (14) to screw the upper and lower saddle clamps (11) (12) to the head (32). Figure 3 (b) is a table It shows that the upper and lower saddle clips (h) (12) are fixed by two fixing bolts (14) juxtaposed to the left and right, and two recesses (30) are provided at the rear of the pillar body (14). Figure 3 (〇) It is shown that a fixing bolt (14) is provided behind the 3rd figure (b) of the above-mentioned 12th M242435, and 3 fixing bolts (14) are used for fixing. Figure 3 (d) shows that two fixing bolts ( 14) A structure in which left and right are arranged side by side in the rear of the above-mentioned Fig. 3 (a). Fig. 4 shows the deformation of various seat pillars (!) Provided with fixing bolts (14) on the front and back sides of the pillar body (31). Figure 4 (a) and Figure 4 (b) show the structure in which one fixing bolt (14) is provided at each of the front and rear. Figure 4 (a) shows only the pillar body (31) A structure in which a groove (30) is provided in front of the frame is shown in FIG. 4 (b), which shows a structure in which the groove (30) is not provided on the front and back sides of the pillar body (31). ) Indicates a structure in which one pillar is arranged in front of the pillar body (31), and two pillars are arranged in the rear, and a total of three fixing bolts (14) are provided. Furthermore, FIG. 4 (e) and FIG. 4 (f) Department It shows the structure with two branches in front of the pillar body (31) and two branches in the rear with a total of four fixing bolts (14). Figure 4 (e) shows only the front and back of the pillar body (31) There are two recessed grooves (30). Figure 4 (0) shows that two recessed grooves (30) are provided on the front and back sides of the pillar body (31). Also, the above-mentioned deformations can also form a reversed front-back direction. Of course, through the combination of the groove (30) and the fixing bolt (μ), it can be inferred that there are many other deformations. As shown in the above various deformation structures, at least one is provided in the pillar body (3Ϊ). The groove (30) can provide a seat post with an offset exceeding conventional limits. For example, in the structure in which a groove (30) is provided on the rear side of the pillar body (31): the saddle (20) can be fixed in a state slightly forward than the conventional fixed position, and vice versa, on the pillar body (31) In the structure in which a groove (30) is provided on the front side, the saddle (20) can be fixed in a state leaning to the rear. Therefore, by choosing a saddle pillar with an appropriate offset of 13 M242435, the fixed position of the saddle can be adapted to the preference of a bicycle rider, and a bicycle with a more comfortable riding feel than the conventional structure can be provided. Also, 'by providing at least one groove in any deformed structure (30)', a head (32) and upper and lower saddle clips (11) (12) smaller than the conventional structure can be formed. In the structure of FIG. 4 (b) and FIG. 4 (0), grooves (30) are formed on the front and back sides of the pillar body (31), so it is possible to provide the most compact and lightweight pillar body (31). In addition, 'Although the hollow cylindrical pillar body (31) has a concave groove (30) formed on the surface of the hollow cylindrical pillar body in each of the above embodiments, it can also be a solid rod shaped pillar body as shown in FIG. 5. (31) The groove (30) is formed by turning. If the groove (30) is turned shallow, it can accommodate a part of the fixing bolt (14), and if it is deep, it can accommodate all the fixing bolts. (14) In addition, the grooves can also be formed by plastic working such as forging and stamping. Furthermore, as shown in FIG. 6, if it is located in front of or behind the center of the solid rod-shaped pillar body (31), On the side, a hole is formed that opens upward and has a diameter and depth that can receive the fixing bolt (14). A channel-shaped groove (30) can be formed. Among the plurality of fixing bolts (4) used in each of the above-mentioned deformations, especially when the micro-adjustment bolts are temporarily fixed, they can also be locked by hand. In this case, if a fixing bolt with a knurled or butterfly screw on the head is used, it can be easily rotated by hand or locked by hand. Also, the pillar body (31) shown in FIG. 6 must be separately formed from the head (32) and 14 M242435. However, in other variants, the pillar body (31) and the head (32) are separately formed or integrated. can. M242435 [Brief description of the drawings] Figure 1 is a partially cutaway cross-sectional view of a seat pillar and a saddle fixed to the seat pillar in the first embodiment of the present invention. Fig. 2 is a cross-sectional view taken along line χ_χ of Fig. 1 with the saddle portion omitted. Fig. 3 is a structural diagram showing the relationship between the pillar body, the fixing bolt, and the head in the deformed structure of the seat pillar in which the fixing bolt is arranged behind the pillar body. Fig. 4 is a structural diagram showing the relationship between the pillar body, the fixing bolt and the head in the deformed structure of the seat pillar in which the fixing bolts are arranged at the front and rear of the pillar body. Fig. 5 is a sectional view showing another embodiment of the pillar body. Fig. 6 is a sectional view showing another embodiment of the pillar body. Fig. 7 is an exploded perspective view showing a conventional seat pillar structure. Fig. 8 is an exploded perspective view showing another example of a conventional seat pillar. [Symbol description] (I) Seat post (3) Through hole (II) Upper saddle clip (12) Lower saddle clip (13a), (33) Saddle clip support (14a) Head of fixing bolt (20 ) Saddle (30) Groove (2) Installation wire (10), (31) Pillar body (11a), (12a) Groove part (13), (32) Head (14) Fixing bolt (15) Female screw (21) Frame body (32a) Rear hinge shaft 16