M303167 95· 7· 11 午月 ^ 一種用於自行車之 八、新型說明： 【新型所屬之技術領域】 本創作係與自行車有關，特別是指 前又，其重量輕且結構強度高。 【先前技術】 $統自行車之叙係由金屬材質製成，M303167 95· 7· 11 午月 ^ One for bicycles, new description: [New technical field] This creation is related to bicycles, especially beforehand, which is light in weight and high in structural strength. [Prior Art] The bicycle system is made of metal.
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^月=量化結構發展，有以纖維補強材料 所示’即-種碳纖維補強樹脂所製成之前又【者料 =是先以預浸樹脂之碳纖維織布捲繞成二長管2,並以 強用之I之方式置人—模具3中’同時於預定部位纏繞補 之，織布4，接著加熱該模具3，同時於該二長管2 雇入兩壓氣體，使該二長管2膨脹而貼抵 内壁’―段時間後該前幻即可硬化成形。H之 该前又1具有一豎管5以及二支臂6由該豎管5底端 σ 了延伸而出，由第一圖可見，該二支臂6分別為一長管2 $組成’其結構強度不足，尤其是當該支臂遭遇側向應力 日寸’特別容易發生結構破壞，若欲加強結構，則需增加碳 纖維織布之用量，如此又使產品之重量增加，因此，如何 兼顧則又1支臂6之結構強度與整體重量，一直是業界努 力研發之方向。 【新型内容】 本創作之一目的在於提供一種用於自行車之前叉，其 重里輕且結構強度高。 20 M303167 95； 7. 11 巧.、-5,.务汇# 承創 則^[乍 α 其支臂特概喊側^^供—翻於自行車之前叉， 包含二S = 本創作所提供用於自行車之前叉係 該暨i==::r及二支臂，該二支臂由 以及一外&兮延伸而出’該二支臂分別具有二内管 該二内管：;：：内管係互相鄰接併排，該外管則套設於 〜之外，该二内管鄰接之管壁結合在一起 中 且該中肋約平行於該該二支臂所在之平面。 10【實施方式】 、，為了更瞭解本創作之特點所在，茲舉以下二較佳實施 例並配合圖式說明如下，其中： 第一圖係本創作第一較佳實施例之立體圖； 弟二圖係第一圖沿3-3方向之剖視圖； 15 第四圖係第二圖沿4_4方向之剖視圖； 第五圖係本創作第二較佳實施例之剖視圖。 請參閱第二至四圖，本創作第一較佳實施例所提供用 於自行車之前叉10係包含有纖維補強樹脂製成之一豎管 20與二支臂30’其中纖維可採用而不限於碳纖維、蝴纖維、 20玻璃纖維或克維拉(Kevlar)纖維，樹脂則可採用熱塑性樹脂 或熱固性樹脂。 該豎管20係一直管，用以供一轉向握把（圖未示）接 設，該二支臂3〇則由該豎管20底端略呈平行向下延伸而 出，且該二支臂30約位於同一平面p上，由第三、四圖可 6 9δ： 7. n M303167 ^該一支臂3G分別具有二内管％以及 内官32係互相鄰接併排， ^ 以一 之外，該外管34=内:，34則套設於該二内管32 - 一内S 32係互相密接且無縫隙，該 一内S 32鄰接之管壁則結 , 5 15 33約平行於該平面p。在祕成一中肋33,該中肋 -起實ΓίΓ二支臂3G時，係先將該二内管32並排在 形成該外二層職細旨之齡織布而 連接，再置於合管體之中央部位與該賢管2。 中灌入高壓氣體，使該二:中加熱，並於該二内管32 於該模具之内32膨脹並將該外管34樓抵 由方^〜 又令間後該前叉10即可硬化成形。 由於该則叉10之支臂3 加該支臂30之結構強 二、有該中肋33，可大幅增 與該平面P平行，使^ ^別疋該中月力33之延伸方向約 有效改善習知結構之°缺巧能更大之側向應力，可 之外，由於^Γ ΐ錢達成本創作之目的。除此 碳纖维織m之刖又1G結構強度高，故可使用較少量 又1以狀狀結構，因此， #文八有重1輕之增進功效。 自行車f/所不’係本鱗第二較佳實闕所提供用於 外管46 Λ又如該前又4〇之支臂42具有二内管44與一 泡## β 亥二内管44中預先填有發泡材料45，當發 46=1發泡時，可使該二内管44膨脹並將該外管 而;〜Γ具内壁’―段時間後該前又40即可硬化成形’ 而錢泡材料45則填滿該二内管44之内部。 20 M303167 95. 7. 11 、? 务 依據本創作之精神，發泡材料與高壓氣體可一起使用 或單獨使用，該中肋之數量與位置可依需要而變化，例如， 該支臂可設三内管，於該三内管之間則形成二中肋，舉凡 此等所屬技術領域中具有通常知識者可輕易思及之結構變 5 化，均應為本創作申請專利範圍所涵蓋。^月=Quantitative structure development, which is made of fiber-reinforced material as shown in the fiber-reinforced material before the [material] = firstly pre-impregnated resin carbon fiber woven fabric into two long tubes 2, and Intensive use of the method of I - in the mold 3 'while at the predetermined part of the winding, weaving 4, and then heating the mold 3, while the two long tubes 2 hire two pressure gas, so that the two long tubes 2 Swelling and sticking to the inner wall' - after a period of time, the front phantom can be hardened. The front portion 1 of H has a vertical tube 5 and the two arms 6 extend from the bottom end σ of the vertical tube 5. As can be seen from the first figure, the two arms 6 are respectively formed by a long tube 2 Insufficient structural strength, especially when the arm encounters lateral stress, is particularly prone to structural damage. If the structure is to be strengthened, the amount of carbon fiber woven fabric needs to be increased, thus increasing the weight of the product. Therefore, how to balance The structural strength and overall weight of the other arm 6 have always been the direction of the industry's efforts to develop. [New content] One of the purposes of this creation is to provide a bicycle front fork that is light and light in weight and high in structural strength. 20 M303167 95; 7. 11 巧.,-5,.务汇# 承创则^[乍α Its arm is shouting side ^^ for-turning on the front fork of the bicycle, including two S = provided by this creation Before the bicycle, the y1==::r and the two arms are extended, and the two arms are extended by an outer & the two arms respectively have two inner tubes: the inner tube:;:: The inner tubes are adjacent to each other, and the outer tubes are sleeved outside the outer tube, the adjacent inner tubes are joined together and the middle ribs are parallel to the plane in which the two arms are located. 10 [Embodiment] In order to better understand the characteristics of the present invention, the following two preferred embodiments are described below with reference to the drawings, wherein: the first figure is a perspective view of the first preferred embodiment of the present invention; 1 is a cross-sectional view taken along line 3-3; 15 is a cross-sectional view of the second figure taken along line 4_4; and the fifth drawing is a cross-sectional view of the second preferred embodiment of the present invention. Referring to the second to fourth figures, the first preferred embodiment of the present invention provides a bicycle front fork 10 comprising a vertical tube 20 and two arms 30' made of fiber-reinforced resin. Carbon fiber, butterfly fiber, 20 glass fiber or Kevlar fiber, the resin may be a thermoplastic resin or a thermosetting resin. The standpipe 20 is a straight tube for connecting a steering grip (not shown), and the two arms 3 are extended from the bottom end of the standpipe 20 in a parallel direction, and the two legs are The arm 30 is located on the same plane p, and the third and fourth figures can be 6 9δ: 7. n M303167 ^ The one arm 3G has two inner tubes % and the inner 32 lines are adjacent to each other side by side, ^ one The outer tube 34=inner: 34 is sleeved on the two inner tubes 32 - one inner S 32 series is closely connected to each other and has no gap, and the inner wall S 32 adjacent to the tube wall is knotted, and 5 15 33 is approximately parallel to the plane p. In the middle of the rib 33, the middle rib - the actual Γ Γ two arms 3G, the two inner tubes 32 are first arranged side by side in the formation of the outer layer of the fine-grained woven fabric, and then placed in the joint The central part of the body and the sage 2. The high-pressure gas is poured into the second: the medium is heated, and the inner tube 32 is expanded in the mold 32, and the outer tube 34 is grounded to the square and the front fork 10 is hardened. Forming. Since the arm 3 of the fork 10 is stronger than the structure of the arm 30 and has the middle rib 33, it can be greatly increased parallel to the plane P, so that the extension direction of the mid-month force 33 is effectively improved. The lack of a conventional structure can give greater lateral stress, but it can be achieved because of the money. In addition to this, the carbon fiber woven m has a high structural strength of 1G, so it can be used in a small amount and in a shape-like structure. Therefore, #文八 has a light weight and enhances the effect. The bicycle f/n is not the second best embodiment of the scale provided for the outer tube 46. The arm 42 of the front and the fourth side has two inner tubes 44 and a bubble ##β海二内管44 The foaming material 45 is pre-filled, and when the hair is 46=1, the inner tube 44 can be inflated and the outer tube can be made; the inner wall of the cookware can be hardened by the front 40. And the bubble material 45 fills the inside of the two inner tubes 44. 20 M303167 95. 7. 11 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The inner tube forms a two-ribbed rib between the three inner tubes, and any structure that can be easily considered by those having ordinary knowledge in the technical field is covered by the scope of the patent application.
95, 7. 11 产， c今 M303167 【圖式簡單說明】 第一圖係習知前叉之剖視圖； 第二圖係本創作第一較佳實施例之立體圖； 第三圖係第二圖沿3-3方向之剖視圖； 第四圖係第二圖沿4-4方向之剖視圖； 第五圖係本創作第二較佳實施例之剖視圖。 【主要元件符號說明】 1前叉 10 2長管 3模具 4纖維織布 5豎管 6支臂 10前叉 20豎管 30支臂 32内管 33中肋 15 34外管 P平面 40前叉 42支臂 44内管 45發泡材料 46外管 995, 7. 11 Production, c Today M303167 [Simplified illustration of the drawings] The first figure is a cross-sectional view of a conventional front fork; the second figure is a perspective view of the first preferred embodiment of the present creation; A cross-sectional view in the 3-3 direction; a fourth view is a cross-sectional view in the 4-4 direction; and a fifth cross-sectional view of the second preferred embodiment of the present invention. [Main component symbol description] 1 front fork 10 2 long tube 3 mold 4 fiber woven fabric 5 vertical tube 6 arm 10 front fork 20 vertical tube 30 arm 32 inner tube 33 middle rib 15 34 outer tube P plane 40 front fork 42 Arm 44 inner tube 45 foam material 46 outer tube 9