M417306 五、新型說明： 【新型所屬之技術領域】 本新型是有關於一種自行車車架，特別是指一種屬於 一體成型式的自行車車架之中管。 【先前技術】 參閱圖1，習知的自行車車架，包括一頭管11(HeadM417306 V. New description: [New technical field] The present invention relates to a bicycle frame, and more particularly to a tube in the bicycle frame which is integrated. [Prior Art] Referring to Figure 1, a conventional bicycle frame includes a head tube 11 (Head
Tube)、一中管 12(Seat Tube)、一上管 ^(Top Tube)、一下 管 14(Down Tube)、一 後上又 15(Seat Stay)、一 後下叉 _ (Chain Stay)16 及一五通 17(B〇tt〇m Bracket)。 習知自行車車架的該中管12未包含該五通17，故在製 造自行車車架時，該中管12與該五通17是採用焊接工藝 進仃接合。利用焊接接合的缺點除了費用成本較高之外， =接後的7L件結構常因焊接過程之種種原因影響，如焊接 操作方式不當、工件表面清潔不乾淨、焊接材料使用不當… 等，而造成焊接部位的強度不足，導致該自行車車架在使 陣子之後，成自行車車架自焊道或熱影響區的部位 ^ 斷裂而損壞。尤其’五通Η為全車架受剪力最強的地方， &了承受騎士的重量與踏力之外，更承受車子在騎乘過程 ▲中外在的應力傳導’若焊接強度不足，易導致車架在ΕΝ測 試過程中’車架自焊接點裂開斷裂。 此外’焊捿後的自行車車架會因為焊道的存在而形成 不平整的表面，影響該自行車車架的美觀，故製造時需多 進仃-道打磨拋光程序，也較浪費製造上的時間與成本。 3 M417306 【新型内容】 因此，本新型之目的，即在提供一種可以縮短自行車 車架製造工時，且可兼顧結構強度與外觀的自行車車架之 中管。 ^ 於疋，本新型的自行車車架之中管，包含一直立段及 一五通段。 該直立段沿一第一軸線方向延伸》 該五通段設置於該直立段的一下端，該五通段具有一 垂直於該第一軸線且沿一第二軸線方向延伸的貫孔。該直 立蚁與該五通段為金屬材料一體成型而成。 本新型的有益效果在於：透過該直立段及該五通段為 金屬材料.一體成型之設計，而不使用焊接接合方式。因 此，可大幅的降低製造自行車車架之工時與生產成本。另 一方面，該直立段與該五通段之間無接缝，有效的提升自 行車車架結構的強度及外觀。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之二個較佳實施例的詳細說明中，將可 清楚的呈現。 在本新型被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示。 參閱圖2、圖3及圖4，本新型自行車皁架之中管—第 一較佳實施例包含一直立段2及一五通段3。 該直立段2包括一環繞一第一軸線L1且界定出一軸孔 4 M417306 22的管壁21。 該五通段3包括-沿一第二軸線L2方向延伸並且與直 立段2的轴孔22相連通的貫孔3卜及一環繞該第二軸線 L2且界定出該貫孔31的圍繞壁32。該圍繞壁垂直於該 第一軸線，且與該直立段2的管壁21的一下端相連接。 該直立段2與該五通段3為金屬材料一體成型而成。 在本較佳實施例，該金屬材料為鋁合金、鎂合金，及鋁鎂 合金其中之一。Tube), a Seat Tube, a Top Tube, a Down Tube, a Seat Stay, and a Chain Stay 16 One five-way 17 (B〇tt〇m Bracket). The middle tube 12 of the conventional bicycle frame does not include the five-way 17, so that when the bicycle frame is manufactured, the middle tube 12 and the five-way 17 are joined by a welding process. In addition to the high cost of welding, the 7L structure after the connection is often affected by various reasons of the welding process, such as improper welding operation, unclean surface of the workpiece, improper use of welding materials, etc. The strength of the welded portion is insufficient, resulting in the bicycle frame being broken and damaged by the position of the bicycle frame from the weld bead or the heat-affected zone. In particular, the 'five-way Η is the place where the full frame is subjected to the strongest shearing force. & it bears the weight and pedaling force of the knight, and it also bears the external stress transmission in the riding process ▲ If the welding strength is insufficient, it is easy to cause the car. During the ΕΝ test, the frame was cracked from the weld. In addition, the bicycle frame after the welding will form an uneven surface due to the existence of the weld bead, which affects the aesthetics of the bicycle frame. Therefore, it is necessary to carry out the boring-track polishing process, which is also a waste of manufacturing time. With cost. 3 M417306 [New content] Therefore, the object of the present invention is to provide a bicycle tube intermediate tube which can shorten the manufacturing time of the bicycle frame and can take into consideration the structural strength and appearance. ^ Yu Yu, the tube in the bicycle frame of this new type, consists of a standing section and a five-way section. The upright section extends along a first axis. The five-way section is disposed at a lower end of the upright section, and the five-way section has a through hole extending perpendicular to the first axis and extending along a second axis. The vertical ant and the five-way segment are integrally formed of a metal material. The utility model has the beneficial effects that the through-segment and the five-way segment are made of a metal material and integrally formed without using a welding joint. Therefore, the labor and production cost of manufacturing the bicycle frame can be greatly reduced. On the other hand, there is no seam between the upright section and the five-way section, which effectively improves the strength and appearance of the bicycle frame structure. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 2, 3 and 4, the tube of the present type of bicycle soap holder - the first preferred embodiment comprises an upright section 2 and a five-way section 3. The upright section 2 includes a wall 21 that surrounds a first axis L1 and defines a shaft bore 4 M417306 22 . The five-way section 3 includes a through hole 3 extending in a direction of a second axis L2 and communicating with the shaft hole 22 of the upright section 2, and a surrounding wall 32 surrounding the second axis L2 and defining the through hole 31. . The surrounding wall is perpendicular to the first axis and is connected to the lower end of the tube wall 21 of the upright section 2. The upright section 2 and the five-way section 3 are integrally formed of a metal material. In the preferred embodiment, the metal material is one of an aluminum alloy, a magnesium alloy, and an aluminum-magnesium alloy.
佳 實 參閱圖5,是本新型―第三較佳實施例，其與該第一較 施例大致相同’不同處在於，該直立段2的管壁2ι具 有一形成在該管壁21 —側的凸出部211，及一沿平行該第 二轴線L2方向貫穿該凸出部211的樞接孔212。在該第二 較佳實施例中，該凸出部211是形成該直立段2的右側，其 。亥樞接孔212供自行車前避震系統安裝。 據上所述可知，本‘型自行車車架之中管具有下列優 點及功效：Referring to FIG. 5, it is a third preferred embodiment of the present invention, which is substantially the same as the first embodiment. The difference is that the wall 2 of the upright section 2 has a side formed on the side of the tube wall 21. The protruding portion 211 and a pivot hole 212 extending through the protruding portion 211 in a direction parallel to the second axis L2. In the second preferred embodiment, the projection 211 is formed on the right side of the upright section 2. The pivotal access hole 212 is provided for the bicycle front suspension system. According to the above description, the tube in the ‘type bicycle frame has the following advantages and effects:
、本新塑透過該直立段2與該五通段3為金屬材料一體 成型的設計，製造時不需透過焊接工藝及焊接後的打磨搬 光程序’可以大幅的縮短製造時間與減少生產成本。另一 方面由於該直立段2與該五-通段3彼此之間為無接縫一 體式，不僅對於自行車車架的結構強度及外财提升之優 點’且其少了焊接材料再加上該直立段2與該五通段3相 連通之故，而亦有助於車架的輕量化。 淮以上所述者，僅為本新型之較佳實施例而已，當不 M417306 能以此限定本新型實施之範圍’即大凡依本新型申請專利 範圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一前視圖，說明習知自行車車架管件的組合關 係； 圖2是一立體圖，說明本新型自行車車架之中管一第 —較佳實施例； 圖3是該第一較佳實施例的一剖視圖； 圖4疋一立體圖，說明該第一較佳實施例之位置關 係；及 圖5疋 則視圖，說明本新型自行車車架之中管一第 —較佳實施例與一前避震系統組合之關係。 M417306 【主要元件符號說明】 2…… ····直立段 3…… •…五通段 21•.… •…管壁 31 ….· …·貫孔 211… •…凸出部 32 •…圍繞壁 212… •…框接孔 L1 .·.· ----弟 轴線 22…… •…軸孔 L2 .··· •…第二軸線Through the design of the upright section 2 and the five-way section 3 as a metal material, the new plastic mold can be manufactured without the need of a welding process and a polishing and polishing process after welding, which can greatly shorten the manufacturing time and reduce the production cost. On the other hand, since the upright section 2 and the five-way section 3 are seamlessly integrated with each other, not only the structural strength of the bicycle frame and the advantages of foreign wealth increase, but also the welding material is added thereto. The upright section 2 is in communication with the five-way section 3, which also contributes to the weight reduction of the frame. The above is only the preferred embodiment of the present invention, and when M417306 can limit the scope of the implementation of the present invention, that is, the simple equivalent change of the scope of the patent application and the new description of the present invention is Modifications are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a combination of conventional bicycle frame pipe fittings; FIG. 2 is a perspective view showing a tube-first embodiment of the bicycle frame of the present invention; 1 is a cross-sectional view of the first preferred embodiment; FIG. 4 is a perspective view showing the positional relationship of the first preferred embodiment; and FIG. 5 is a view showing the tube in the bicycle frame of the present invention. The relationship between the embodiment and a front suspension system combination. M417306 [Explanation of main component symbols] 2... ····Upright section 3... •... Five-way section 21•.... •...wall 31 .....···through hole 211... •...protrusion 32 •... Around the wall 212... •... frame connection hole L1 .··· ---- brother axis 22... •... shaft hole L2 ........