TWI583593B - Front fork and front fork - Google Patents
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Description
本發明是有關於一種自行車零件，特別是指一種前叉臂及前叉。The present invention relates to a bicycle component, and more particularly to a front fork arm and a front fork.
參閱圖1與圖2，一種現有的前叉10大致上包含一豎管1，及二前叉臂2。該等前叉臂2分別設置於該豎管1的兩相反側，且分別為組接在一起的一叉骨21及一勾爪件22的組合。各叉骨21呈中空管狀且包括一與該豎管1銲接在一起的第一端部211，及一相反於該第一端部211的第二端部212。各勾爪件22分別包括一塞設於各叉骨21的第二端部212的柱塞部221，及一形成有一可供一輪軸(圖未示)的一端部卡固的嵌孔222的卡板部223，且各勾爪件22再透過銲接方式固定於各叉骨21的第二端部212。Referring to Figures 1 and 2, a prior front fork 10 generally includes a standpipe 1 and two front fork arms 2. The front fork arms 2 are respectively disposed on opposite sides of the standpipe 1, and are respectively a combination of a wishbone 21 and a hook member 22 that are assembled together. Each wishbone 21 is hollow tubular and includes a first end 211 welded to the riser 1 and a second end 212 opposite the first end 211. Each of the hook members 22 includes a plunger portion 221 that is plugged to the second end portion 212 of each of the wishbones 21, and a through hole 222 that is formed by an end portion of an axle (not shown). The card portion 223 and the hook members 22 are fixed to the second end portion 212 of each of the wishbones 21 by welding.
然而，上述前叉臂2的叉骨21及勾爪件22是利用銲接方式組接在一起，因此該等前叉臂2的叉骨21及勾爪件22銲接組裝後的銲接公差，及該等前叉臂2經由熱處理後的結構變形公差，都會累積造成組接於該豎管1的該等前叉臂2的嵌孔222的平行度、同心圓度等精準度公差變大而無法與該輪軸組裝的問題，且焊接技術良莠不齊，再加上勾爪件22是透過其柱塞部221塞設於叉骨21的第二端部212的方式而套插於叉骨21上，使得前叉10使用於自行車且在騎乘時，容易使勾爪件22與叉骨21的結合處承受相當大的力量，使得勾爪件22與叉骨21間所形成的銲接處因焊接不良容易斷裂，甚至致使勾爪件22與叉骨21的結合處產生間隙，從而影響騎乘時的操控性及安全性。However, the wishbone 21 and the claw member 22 of the front fork arm 2 are assembled by welding, and therefore the welding tolerances of the fork bone 21 and the claw member 22 of the front fork arm 2 after welding are assembled, and After the structural deformation tolerance of the front fork arm 2 through the heat treatment, the accuracy of the parallelism and concentricity of the insertion holes 222 of the front fork arms 2 assembled to the vertical pipe 1 is increased, and the accuracy tolerance cannot be increased. The problem of assembly of the axle and the welding technique are different. Further, the hook member 22 is inserted into the wishbone 21 through the plunger portion 221 being plugged to the second end portion 212 of the wishbone 21, so that the front portion The fork 10 is used for a bicycle and when riding, it is easy to put a considerable force on the joint of the claw member 22 and the wishbone 21, so that the welded portion formed between the claw member 22 and the wishbone 21 is easily broken due to poor welding. Even a gap is created between the hook member 22 and the wishbone 21, thereby affecting the handling and safety during riding.
再者，上述勾爪件22的塞設部221的外型須配合叉骨21的第二端部212的形狀，才能達到緊密迫合的塞設效果，因此對於具有不同形狀變化的叉骨21則需要不同的模具來成型製造相對應的勾爪件22，從而增加模具製作成本，且上述前叉10的豎管1、叉骨21及勾爪件22為分別製造後才進行組接再一起，使得上述前叉10的生產工序繁複。Furthermore, the shape of the plug portion 221 of the hook member 22 must match the shape of the second end portion 212 of the wishbone 21 to achieve a tightly engaging effect, and thus for the wishbone 21 having different shape changes. Then, different molds are needed to mold and manufacture the corresponding claw members 22, thereby increasing the mold manufacturing cost, and the vertical tube 1, the wishbone 21 and the claw members 22 of the front fork 10 are separately assembled and then assembled together. The production process of the front fork 10 described above is complicated.
因此，本發明之目的，即在提供一種為一體成型且具有高結構強度的前叉臂。Accordingly, it is an object of the present invention to provide a front fork arm that is integrally formed and has high structural strength.
於是，本發明前叉臂包含一為管狀且沿一直線延伸的直臂段，以及一由該直臂段的一端部沿著該直線向外延伸且為實心的前叉卡板，該直臂段對應於該前叉卡板的該端部呈封閉狀，直臂段及該前叉卡板為鋁材一體化製成。Thus, the front fork arm of the present invention includes a straight arm section that is tubular and extends along a straight line, and a front fork card that extends outwardly along the straight line from one end of the straight arm section, the straight arm section The end portion corresponding to the front fork card is closed, and the straight arm segment and the front fork card are integrally formed of aluminum.
本發明之功效在於：本發明前叉臂由於是一體成型的無接縫結構從而達到高結構強度的功效，能在使用於自行車且在騎乘時，足以承受相當大的力量衝擊而保持結構的完好度，以維持騎乘時良好的操控性及安全性。The effect of the invention is that the front fork arm of the invention has the effect of high structural strength due to the integrally formed seamless structure, and can be used for the bicycle and is capable of withstanding a considerable force impact while riding. Integrity to maintain good handling and safety during riding.
因此。本發明之另一目的，即在提供一種具有一體成型及高結構強度的前叉臂的前叉，從而減少組接零件數量以避免組接公差累積造成精度不良的問題。therefore. Another object of the present invention is to provide a front fork having an integrally formed and high structural strength front fork arm, thereby reducing the number of component parts to avoid the problem of poor precision due to accumulation of assembly tolerances.
於是，本發明前叉包含一豎管，及二前叉臂。Thus, the front fork of the present invention comprises a standpipe and two front fork arms.
該等前叉臂分別設置於該豎管的兩相反側，各前叉臂包括相連接且分別為管狀的一彎臂段及一沿一直線延伸的直臂段，以及一由該直臂段相反於該彎臂段的端部沿著該直線向外延伸的前叉卡板，該彎臂段相反於該直臂段的端部與該豎管相連接，該直臂段相反於該彎臂段的端部呈封閉狀，各前叉臂的前叉卡板具有一穿設部，該彎臂段、直臂段及該前叉卡板為鋁材一體化製成。The front fork arms are respectively disposed on opposite sides of the vertical tube, and each front fork arm includes a bent arm section connected to the tubular shape and a straight arm section extending along a straight line, and a reversed straight arm section a front fork card extending outward along the straight line at an end of the curved arm segment, the curved arm segment being connected to the riser opposite to an end of the straight arm segment, the straight arm segment being opposite to the curved arm The end portion of the segment is closed, and the front fork card of each front fork arm has a through portion, and the curved arm segment, the straight arm segment and the front fork card are integrally formed of aluminum.
本發明之功效在於：本發明前叉的前叉臂由於是一體成型的無接縫結構，從而不僅能達到高結構強度的功效，在使用於自行車且在騎乘時，足以承受相當大的力量衝擊而保持結構的完好度，維持騎乘時良好的操控性及安全性，且也能減少組接零件數量以避免組接公差累積造成精度不良的問題。The effect of the invention is that the front fork arm of the front fork of the invention is not only capable of achieving high structural strength due to the integrally formed seamless structure, but is capable of withstanding considerable force when used on a bicycle and when riding. The impact maintains the integrity of the structure, maintains good handling and safety during riding, and also reduces the number of assembled parts to avoid the problem of poor precision due to the accumulation of assembly tolerances.
在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.
參閱圖3與圖4，本發明前叉臂的一實施例，是經由以下製法步驟所製得：Referring to Figures 3 and 4, an embodiment of the front fork arm of the present invention is produced by the following manufacturing steps:
一步驟71：利用管件加工機(圖未示)將一金屬管材3進行抽管及擴管，從而加工成一具有預定長度及管壁厚度變化的預成型管件4，該預成型管件4沿一直線L延伸且呈圓管狀，並具有相反設置的一第一端部41及一第二端部42，其中，該第一端部41的管壁厚度為T1，該第二端部42的管壁厚度為T2，連接於該第一端部41及該第二端部42間的部分的管壁厚度為T3，且該預成型管件4滿足以下管壁厚度變化：T1≧1.5*T2，T2＞T3，在本實施例中，該金屬管材3的材質為鋁合金；In a step 71, a metal pipe 3 is piped and expanded by a pipe processing machine (not shown) to be processed into a preformed pipe member 4 having a predetermined length and a wall thickness variation, and the preformed pipe member 4 is along a straight line L. The first end portion 41 and the second end portion 42 are oppositely disposed, wherein the first end portion 41 has a tube wall thickness T1, and the second end portion 42 has a tube wall thickness. For T2, the wall thickness of the portion connected between the first end portion 41 and the second end portion 42 is T3, and the preformed tubular member 4 satisfies the following wall thickness variation: T1 ≧ 1.5 * T2, T2 > T3 In this embodiment, the metal pipe 3 is made of an aluminum alloy;
一步驟72：接續於該步驟71後，將該預成型管件4進行冷鍛加工，從而將該第一端部41壓合封閉而形成一沿該直線L延伸且概呈錐狀的直管段411，及一由該直管段411遠離該第二端部42的一端沿該直線L向外延伸的實心柱體412，也就是說，該直管段411與該實心柱體412為冷鍛一體化製成；Step 72: Following the step 71, the preformed tubular member 4 is subjected to cold forging processing to press-close the first end portion 41 to form a straight pipe section 411 extending along the straight line L and having a substantially tapered shape. And a solid cylinder 412 extending outward from the straight end of the straight pipe section 411 away from the second end portion 42. That is, the straight pipe section 411 and the solid cylinder 412 are integrally formed by cold forging. to make;
一步驟73：接續於該步驟72後，將該預成型管件4進行塑型加工，從而將該實心柱體412壓制塑型成一前叉卡板414；及a step 73: after the step 72, the preformed tubular member 4 is shaped, thereby pressing the solid cylinder 412 into a front fork card 414;
一步驟74：接續於該步驟73後，將該直管段411壓制塑型成一為中空的直臂段413，以及將該預成形管件4位於該第二端部42至該直管段413的部分彎曲且壓制塑型成一彎臂段415，即完成一為一體成型的前叉臂4’的製作，其中，該直臂段413與該前叉卡板414是由該金屬管件3經由冷鍛一體化再壓制塑型而成。Step 74: Following the step 73, the straight pipe section 411 is press-formed into a hollow straight arm section 413, and the portion of the preformed pipe member 4 located at the second end portion 42 to the straight pipe section 413 is bent. And pressing and molding into a curved arm section 415, that is, completing the manufacture of the integrally formed front fork arm 4', wherein the straight arm section 413 and the front fork card 414 are integrated by the cold metal forging by the metal pipe member 3. It is then pressed and molded.
也就是說，本發明前叉臂4’是包含上述相連接且分別為管狀的該彎臂段415及沿該直線L延伸的該直臂段413，以及由該直臂段413相反於該彎臂段415的端部沿著該直線L向外延伸且為實心的前叉卡板414，該直臂段413相反於該彎臂段415的端部呈封閉狀，該彎臂段415、直臂段413及該前叉卡板414為鋁合金一體化製成。That is, the front fork arm 4' of the present invention is the curved arm section 415 including the above-mentioned connected and respectively tubular and the straight arm section 413 extending along the straight line L, and the straight arm section 413 is opposite to the curved section The end of the arm section 415 extends outward along the line L and is a solid front fork card 414. The straight arm section 413 is closed opposite to the end of the curved arm section 415. The curved arm section 415 is straight. The arm section 413 and the front fork card 414 are integrally formed of an aluminum alloy.
值得一提的是，本發明前叉臂的該實施例的製法步驟中的該步驟73及步驟74也可僅將該預成型管件4進行塑型加工成上述為一體成型的直臂段413及前叉卡板414，然而上述的彎臂段415部分是另外鑄造成一獨立元件或是形成為前叉的豎管的一部分，在後續組裝時，再跟該直臂段413進行銲接在一起。也就是說，本發明前叉臂的該實施例也可僅包含上述為一體成型的直臂段413及前叉卡板414。It is to be noted that the step 73 and the step 74 in the manufacturing step of the embodiment of the front fork arm of the present invention can also mold only the preformed tubular member 4 into the above-described integrally formed straight arm segment 413 and The fork plate 414, however, is partially cast as a separate component or part of a standpipe formed as a front fork, which is then welded to the straight arm section 413 during subsequent assembly. That is to say, this embodiment of the front fork arm of the present invention may also include only the straight arm section 413 and the front fork card 414 which are integrally formed as described above.
較佳地，本發明前叉臂的該實施例的製法步驟還可包含一步驟75：接續於該步驟74後，配合參閱圖5，以CNC加工方式對於該前叉臂4’的該前叉卡板414進行最後外型加工，從而形成一可供一輪軸(圖未示)的一端部穿設卡固的穿設部416，該穿設部416為一貫穿設置的貫孔，即完成一為筒軸式的前叉臂4’的製作。值得一提的是，也可以沖孔方式對於該前叉臂4’的該前叉卡板414進行最後外型加工而形成該穿設部416，且該穿設部416也不以上述貫孔為限，也可為一由相反該前臂段413的端緣向內凹陷的缺口(見圖6)，而所製作完成的前叉臂4’則為開口式。Preferably, the manufacturing step of the embodiment of the front fork arm of the present invention may further comprise a step 75: following the step 74, with reference to FIG. 5, the front fork of the front fork arm 4' is processed by CNC machining. The card 414 is subjected to a final shaping process to form a through portion 416 for the end of one of the axles (not shown). The through portion 416 is a through hole provided through the through hole. It is the production of the barrel-type front fork arm 4'. It is to be noted that the front fork card 414 of the front fork arm 4 ′ can be subjected to final shaping to form the through portion 416 , and the through portion 416 is not formed by the through hole. Alternatively, it may be a notch (see FIG. 6) which is recessed inward by the end edge of the forearm section 413, and the finished front fork arm 4' is open.
在此補充說明的是，在上述步驟71中所製得的預成型管件4的第一端部41及第二端部42的管壁厚度T1、T2需滿足T1≧1.5*T2的原因在於：是為了在步驟72對於該預成型管件4的第一端部41冷鍛成具有足夠體積的該實心柱體412，從而在步驟73中才能將該實心柱體412壓制成型出具有足夠厚度及板面積的前叉卡板414，使得該前叉卡板414能達到良好的結構強度。It is added here that the reason why the wall thicknesses T1 and T2 of the first end portion 41 and the second end portion 42 of the preformed tubular member 4 obtained in the above step 71 need to satisfy T1 ≧ 1.5*T2 is as follows: The first end portion 41 of the preformed tubular member 4 is cold forged into the solid cylinder 412 having a sufficient volume at step 72, so that the solid cylinder 412 can be press-formed to have a sufficient thickness and plate in step 73. The front fork card 414 of the area enables the front fork card 414 to achieve good structural strength.
綜上所述，本發明前叉臂是直接由一金屬管材3經由抽管、冷鍛及塑型步驟從而製得一體成型且高結構強度的前叉臂4’，相較於習知兩件組合式的前叉臂的製法，省去叉骨及勾爪件個別製造工序及將兩者對位組裝及銲接等工序，且無須對於具有不同形狀變化的叉骨使用不同的模具來成型製造相對應的勾爪件，從而省去相對的模具製作成本，再者本發明前叉臂由於是一體成型的無接縫結構，從而達到高結構強度的功效，能在使用於自行車且在騎乘時，足以承受相當大的力量衝擊而保持結構的完好度，以維持騎乘時良好的操控性及安全性，故確實能達成本發明之目的。In summary, the front fork arm of the present invention is directly formed by a metal pipe 3 through a pipe drawing, cold forging and shaping step to obtain an integrally formed and high structural strength front fork arm 4', compared with the conventional two pieces. The method of the combined front fork arm eliminates the individual manufacturing process of the wishbone and the claw piece and the process of assembling and welding the two, and does not need to use different molds for forming the manufacturing phase of the wishbone having different shape changes. Corresponding hook parts, thereby eliminating the relative mold manufacturing cost, and the front fork arm of the present invention is a one-piece jointless structure, thereby achieving high structural strength, can be used in bicycles and when riding It is sufficient to withstand considerable force impact and maintain the integrity of the structure to maintain good handling and safety during riding, so it is indeed possible to achieve the object of the present invention.
參閱圖7及圖8，本發明前叉的一實施例，是經由以下製法步驟所製得：Referring to Figures 7 and 8, an embodiment of the front fork of the present invention is produced by the following manufacturing steps:
一步驟81：提供一為金屬材質的豎管5，及二經由上述前叉臂的製法的步驟71至步驟74(見圖4)所製得為一體成型的前叉臂4’，且將該等前叉臂4’銲接於該豎管5，並將形成於該豎管5與該等前叉臂4’間的銲道6打磨平整化，其中，該等前叉臂4’位於該豎管5的兩相反側，且各前叉臂4’相反於該前叉卡板414的端部與該豎管5相連接，在本實施例中，該豎管5及該等前叉臂4’的材質皆為鋁合金，在此補充說明的是，經由上述前叉臂的製法的步驟71至步驟74所製得為一體成型的前叉臂4’也可僅具有該前臂段413及該前叉卡板414，而該彎臂段415是另外鑄造後再銲接於該豎管5與該前臂段413間，亦或是該豎管5是一體成型有二如同上述彎臂段415，而該等前叉臂4’的前臂段413是分別銲接該等豎管5的彎臂段；a step 81: providing a vertical tube 5 made of metal, and a front fork arm 4' which is integrally formed through steps 71 to 74 (see FIG. 4) of the method for manufacturing the front fork arm, and The front fork arm 4' is welded to the standpipe 5, and the weld bead 6 formed between the standpipe 5 and the front fork arms 4' is smoothed, wherein the front fork arms 4' are located at the vertical The opposite sides of the tube 5, and the front fork arms 4' are connected to the vertical tube 5 opposite to the end of the front fork card 414. In the present embodiment, the vertical tube 5 and the front fork arms 4 The material of the material is aluminum alloy. It is added that the front fork arm 4' which is integrally formed through the steps 71 to 74 of the method for manufacturing the front fork arm may also have only the forearm segment 413 and the The front fork card 414, and the curved arm section 415 is additionally cast and then welded between the standpipe 5 and the forearm section 413, or the standpipe 5 is integrally formed with two curved arm sections 415, and The forearm segments 413 of the front fork arms 4' are respectively bent arms that weld the vertical tubes 5;
一步驟82：接續於該步驟81後，將銲接在一起的該豎管5及該等前叉臂4’進行熱處理，使得該豎管5及該等前叉臂4’達到預定金屬物理特性，在本實施例中，熱處理步驟主要用以增加該豎管5及該等前叉臂4’的金屬強度；及Step 82: Following the step 81, the vertical tube 5 and the front fork arms 4' welded together are heat-treated, so that the vertical tube 5 and the front fork arms 4' reach predetermined metal physical properties. In this embodiment, the heat treatment step is mainly for increasing the metal strength of the standpipe 5 and the front fork arms 4';
一步驟83：接續於該步驟82後，配合參閱圖5，以CNC加工方式對於各前叉臂4’的前叉卡板414進行最後外型加工，從而形成一可供一輪軸(圖未示)的一端部穿設卡固的穿設部416，該穿設部416為一貫穿設置的貫孔，即完成一具有筒軸式的前叉臂4’的前叉的製作。值得一提的是，也該穿設部416也不以上述貫孔為限，也可為一由相反該前臂段413的端緣向內凹陷的缺口(見圖6)，而所製作完成的前叉的前叉臂4’則為開口式。Step 83: Following the step 82, with reference to FIG. 5, the front fork card 414 of each front fork arm 4' is subjected to final machining in a CNC machining manner, thereby forming an available axle (not shown). One end portion is provided with a fastening through portion 416 which is a through hole which is formed through a through hole, that is, a front fork having a cylindrical shaft type front fork arm 4' is completed. It should be noted that the wearing portion 416 is also not limited to the above-mentioned through hole, and may be a notch (see FIG. 6) which is recessed inward from the end edge of the forearm segment 413, and is completed. The front fork arm 4' of the front fork is open.
也就是說，本發明前叉的該實施例是包含該豎管5及該等前叉臂4’，該等前叉臂4’是分別設置於該豎管5的兩相反側，各前叉臂4’包括相連接且分別為管狀的該彎臂段415及沿該直線L延伸的直臂段413，以及由該直臂段413相反於該彎臂段415的端部沿著該直線L向外延伸的前叉卡板414，該彎臂段415相反於該直臂段413的端部與該豎管5相連接，該直臂段413相反於該彎臂段415的端部呈封閉狀，各前叉臂4’的前叉卡板414具有該穿設部416，該彎臂段415、直臂段413及該前叉卡板414為鋁合金一體化製成。That is, the embodiment of the front fork of the present invention comprises the vertical tube 5 and the front fork arms 4', and the front fork arms 4' are respectively disposed on opposite sides of the vertical tube 5, each front fork The arm 4' includes the curved arm section 415 which is connected and respectively tubular, and the straight arm section 413 extending along the straight line L, and the straight arm section 413 is opposite to the end of the curved arm section 415 along the straight line L An outwardly extending front fork card 414, the curved arm section 415 being coupled to the riser 5 opposite the end of the straight arm section 413, the straight arm section 413 being closed opposite to the end of the curved arm section 415 The front fork card 414 of each front fork arm 4' has the through portion 416. The curved arm portion 415, the straight arm portion 413 and the front fork card 414 are integrally formed of an aluminum alloy.
綜上所述，本發明前叉是將由金屬管材3經由抽管、冷鍛及塑型步驟所製得的一體成型且高結構強度的前叉臂4’與該豎管5組裝銲接在一起，且經由熱處理步驟後，才成型該等前叉臂4’的穿設部416，使得本發明前叉的該等前叉臂4’的穿設部416的平行度、同心圓度等與一輪軸的組裝精準度，是不受該等前叉臂4’與該豎管5間的銲接公差及經由熱處理後的結構變形公差影響，且本發明前叉相較於習知前叉，省去叉骨及勾爪件個別製造工序及將兩者對位組裝及銲接等工序，且無須對於具有不同形狀變化的叉骨使用不同的模具來成型製造相對應的勾爪件，從而省去相對的模具製作成本，再者本發明前叉的前叉臂4’由於是一體成型的無接縫結構，從而達到高結構強度的功效，能在使用於自行車且在騎乘時，足以承受相當大的力量衝擊而保持結構的完好度，維持騎乘時良好的操控性及安全性，故確實能達成本發明之目的。In summary, the front fork of the present invention is an assembly and welding of the integrally formed and high structural strength front fork arm 4' obtained by the metal pipe 3 through the pipe drawing, cold forging and molding steps. After the heat treatment step, the through portions 416 of the front fork arms 4' are formed such that the parallelism, concentricity, etc. of the through portions 416 of the front fork arms 4' of the front fork of the present invention are combined with an axle The assembly accuracy is not affected by the welding tolerance between the front fork arm 4' and the vertical tube 5 and the structural deformation tolerance after the heat treatment, and the front fork of the present invention is compared with the conventional front fork, and the fork is omitted. The individual manufacturing process of the bone and the claw member and the steps of assembling and welding the two, and it is not necessary to use different molds for forming the corresponding claws for the wishbone having different shape changes, thereby eliminating the relative mold. The manufacturing cost, and the front fork arm 4' of the front fork of the invention is an integrally formed seamless structure, thereby achieving high structural strength, and can be used for a bicycle and is capable of withstanding considerable force when riding. Impact and maintain the integrity of the structure, dimension Good handling and safety, it can really achieve the objective of the present invention while riding.
惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.
<TABLE border="1" borderColor="#000000" width="_0001"><TBODY><tr><td> 3·········· 金屬管材 4·········· 預成型管件 41········ 第一端部 411······ 直管段 412······ 實心柱體 413······ 直臂段 414······ 前叉卡板 415······ 彎臂段 416······ 穿設部 42········ 第二端部 4’········· 前叉臂 5·········· 豎管 6·········· 銲道 </td><td> T1········ 管壁厚度 T2········ 管壁厚度 T3········ 管壁厚度 L·········· 直線 71········ 步驟 72········ 步驟 73········ 步驟 74········ 步驟 75 ······· 步驟 81········ 步驟 82········ 步驟 83········ 步驟 </td></tr></TBODY></TABLE><TABLE border="1" borderColor="#000000" width="_0001"><TBODY><tr><td> 3·········· Metal pipe 4········ · Preformed pipe fittings 41········ The first end part 411······ Straight pipe section 412······ Solid cylinder 413······ Straight arm section 414·· ···· Front fork card 415······ Bending arm section 416······ The wearing part 42········ The second end part 4'······· ·· Front Fork Arm 5·········· Standpipe 6·········· Welded </td><td> T1········ Wall thickness T2········ Wall thickness T3········ Tube wall thickness L··································································· ····· Step 73········ Step 74········ Step 75 ··················································· ···· Step 83········ Steps</td></tr></TBODY></TABLE>
本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中： 圖1是現有的前叉的一立體圖； 圖2是現有的前叉的一局部放大剖面圖，說明該前叉的二前叉臂分別是一勾爪件插設於一叉骨的一端部的組合設計； 圖3是本發明前叉臂的一實施例的側視圖； 圖4是該實施例的一製造流程平面示意圖，說明將一金屬管材經由各步驟後製成一為一體成型的前叉臂； 圖5是一由該實施例為一筒軸式前叉臂的側視圖； 圖6是一由該實施例為一開口式前叉臂的側視圖； 圖7是本發明前叉的一實施例的側視圖；及 圖8是該實施例的一製造流程平面示意圖，說明將一金屬豎管及二為一體成型的前叉臂經由各步驟後製成一前叉。BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a perspective view of a conventional front fork; Figure 2 is a partially enlarged cross-sectional view of a conventional front fork, illustrating The two front fork arms of the front fork are respectively a combined design of a hook member inserted into one end of a wishbone; FIG. 3 is a side view of an embodiment of the front fork arm of the present invention; FIG. 4 is a view of the embodiment. A schematic plan view of a manufacturing process for forming a metal pipe through each step to form an integrally formed front fork arm; FIG. 5 is a side view of a cylindrical front fork arm of the embodiment; FIG. Figure 7 is a side elevational view of an embodiment of the front fork of the present invention; and Figure 8 is a plan view of a manufacturing flow of the embodiment, illustrating a metal riser And the two-in-one front fork arm is formed into a front fork through each step.
<TABLE border="1" borderColor="#000000" width="_0002"><TBODY><tr><td> 413······ 直臂段 414······ 前叉卡板 415······ 彎臂段 </td><td> 416······ 穿設部 4’········· 前叉臂 L·········· 直線 </td></tr></TBODY></TABLE><TABLE border="1" borderColor="#000000" width="_0002"><TBODY><tr><td> 413······ Straight arm section 414······ Front fork card 415 ······ Bending arm section </td><td> 416························································································· · Line </td></tr></TBODY></TABLE>
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104132668A TWI583593B (en) | 2015-10-05 | 2015-10-05 | Front fork and front fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104132668A TWI583593B (en) | 2015-10-05 | 2015-10-05 | Front fork and front fork |
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| Publication Number | Publication Date |
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| TW201713548A TW201713548A (en) | 2017-04-16 |
| TWI583593B true TWI583593B (en) | 2017-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| TW104132668A TWI583593B (en) | 2015-10-05 | 2015-10-05 | Front fork and front fork |
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| TW (1) | TWI583593B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221664A (en) * | 1997-12-31 | 1999-07-07 | 曾绍谦 | Integrally-shaped prodn. method of bicycle front fork made from alluminium alloy |
| CN2795014Y (en) * | 2005-04-18 | 2006-07-12 | 台湾司普工业股份有限公司 | Integrated formed structure of bicycle front fork and disc brake base |
| CN2883155Y (en) * | 2005-09-21 | 2007-03-28 | 林华正 | Integrated fork column |
| TWM367872U (en) * | 2009-06-09 | 2009-11-01 | Rong-Yin Lin | Front fork folding structure |
| CN102602489A (en) * | 2012-03-29 | 2012-07-25 | 深圳市科美特机械设备有限公司 | Integrally-formed front fork and manufacturing method thereof |
| CN102039514B (en) * | 2009-10-15 | 2013-11-13 | 达建工业股份有限公司 | Integrated bicycle front fork tube and manufacturing procedure thereof |
-
2015
- 2015-10-05 TW TW104132668A patent/TWI583593B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221664A (en) * | 1997-12-31 | 1999-07-07 | 曾绍谦 | Integrally-shaped prodn. method of bicycle front fork made from alluminium alloy |
| CN2795014Y (en) * | 2005-04-18 | 2006-07-12 | 台湾司普工业股份有限公司 | Integrated formed structure of bicycle front fork and disc brake base |
| CN2883155Y (en) * | 2005-09-21 | 2007-03-28 | 林华正 | Integrated fork column |
| TWM367872U (en) * | 2009-06-09 | 2009-11-01 | Rong-Yin Lin | Front fork folding structure |
| CN102039514B (en) * | 2009-10-15 | 2013-11-13 | 达建工业股份有限公司 | Integrated bicycle front fork tube and manufacturing procedure thereof |
| CN102602489A (en) * | 2012-03-29 | 2012-07-25 | 深圳市科美特机械设备有限公司 | Integrally-formed front fork and manufacturing method thereof |
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| TW201713548A (en) | 2017-04-16 |
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