TWI777751B - Composite crank and method of making the same - Google Patents
Composite crank and method of making the same Download PDFInfo
- Publication number
- TWI777751B TWI777751B TW110131707A TW110131707A TWI777751B TW I777751 B TWI777751 B TW I777751B TW 110131707 A TW110131707 A TW 110131707A TW 110131707 A TW110131707 A TW 110131707A TW I777751 B TWI777751 B TW I777751B
- Authority
- TW
- Taiwan
- Prior art keywords
- metal piece
- piece
- metal
- chamber
- contact hole
- Prior art date
Links
Images
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
一種複合曲柄,其包含一第一金屬件、一第二金屬件、一外纖維件,與一補強纖維件,該第一金屬件與該第二金屬件間隔排列,該外纖維件包覆該第一金屬件與該第二金屬件,該外纖維件與該第一金屬件、該第二金屬件共同定義一套接空間形成前述三者之間,該補強纖維件設置於該套接空間,其具有一肋壁及由該肋壁相對二側彎折出的兩貼合端,該兩貼合段分別貼合於該外纖維件;該複合曲柄具有重量輕,並承受扭轉荷載的優點。A composite crank, comprising a first metal piece, a second metal piece, an outer fiber piece, and a reinforcing fiber piece, the first metal piece and the second metal piece are arranged at intervals, and the outer fiber piece covers the The first metal piece, the second metal piece, the outer fiber piece, the first metal piece, and the second metal piece together define a socket space to form a space between the three, and the reinforcing fiber piece is disposed in the socket space , which has a rib wall and two abutting ends bent from opposite sides of the rib wall, and the two abutting sections are respectively attached to the outer fiber piece; the composite crank has the advantages of light weight and torsional load bearing .
Description
本發明關於一種用於自行車的曲柄,特別是關於一種複合材質的曲柄。The present invention relates to a crank for bicycles, in particular to a crank made of composite materials.
自行車設計通常以剛性結構車架來串聯前後車輪,而曲柄是連接於鏈輪與踏板之間,將使用者踩踏踏板的力量,透過鏈輪和鏈條傳遞至後輪。作為力量傳遞的結構性部件,自行車曲柄經常由鋼材或合金製成。為了確保曲柄的踏板端和鏈輪端都能順暢樞轉此外,曲柄兩端必須具有強固的樞接結構,才能同時承受來自踏板端和鏈輪端的扭轉荷載。此外,為了降低車體重量,纖維材料被應用在自行車架的製造上。不過,纖維材料並不利於製作承受高度扭力的樞接結構,遂有自行車曲柄以金屬與纖維進行複合材料製造。Bicycle design usually uses a rigid structure frame to connect the front and rear wheels in series, and the crank is connected between the chain wheel and the pedal, and the force of the user's pedaling is transmitted to the rear wheel through the chain wheel and chain. As a structural component for power transmission, bicycle cranks are often made of steel or alloys. In order to ensure smooth pivoting at both the pedal and sprocket ends of the crank, the crank must have strong pivot connections at both ends to withstand the torsional loads from both the pedal and sprocket ends. In addition, in order to reduce the weight of the vehicle body, fiber materials are used in the manufacture of bicycle frames. However, fiber materials are not conducive to making pivot structures that can withstand high torque, so bicycle cranks are made of composite materials of metal and fiber.
本發明的主要目的在於提供一種複合曲柄及其製造方法,該複合曲柄具有重量輕,並可以提升該複合曲柄的厚度方向結構強度的優點。The main purpose of the present invention is to provide a composite crank and a manufacturing method thereof. The composite crank has the advantages of light weight and can improve the structural strength in the thickness direction of the composite crank.
為了達到上述的目的,本發明所提出的複合曲柄,包含: 一第一金屬件; 一第二金屬件,與該第一金屬件間隔排列; 一外纖維件,包覆該第一金屬件與該第二金屬件,該外纖維件與該第一金屬件、該第二金屬件共同定義一套接空間形成於前述三者之間;以及 一補強纖維件,設置於該套接空間,該補強纖維件具有一肋壁沿該複合曲柄的一厚度方向與一長度方向延伸,且該補強纖維件由該肋壁相對二側彎折出二貼合段,該二貼合段沿該複合曲柄的寬度方向與長度方向延伸而分別貼合於該外纖維件。In order to achieve the above-mentioned purpose, the composite crank proposed by the present invention includes: a first metal piece; a second metal piece arranged at intervals from the first metal piece; an outer fiber piece covering the first metal piece and the second metal piece, the outer fiber piece, the first metal piece and the second metal piece together define a socket space formed between the three; and A reinforcing fiber piece is disposed in the socket space, the reinforcing fiber piece has a rib wall extending along a thickness direction and a length direction of the composite crank, and the reinforcing fiber piece is bent out of two opposite sides of the rib wall. A bonding section, the two bonding sections extend along the width direction and the length direction of the composite crank and are respectively bonded to the outer fiber piece.
本發明所提出的另一複合曲柄,包含: 一第一金屬件,具有一第一接孔部與一第一連接段,該第一連接段定義一第一容室與一第一開口; 一第二金屬件,與該第一金屬件間隔排列,該第二金屬件具有一第二接孔部與一第二連接段,該第二連接段定義一第二容室與一第二開口;以及 一外纖維件,包覆間隔排列之該第一金屬件與該第二金屬件,使該外纖維件與該第一金屬件、該第二金屬件共同定義一套接空間形成於前述三者之間,該套接空間連通該第一容室與該第二容室; 其中,該第一連接段由該第一接孔部朝向該第二金屬件一體延伸,該第二連接段由該第二接孔部朝向該第一金屬件一體延伸; 其中,該外纖維件一體包覆該第一接孔部、該第一連接段、該套接空間、該第二連接段與該第二接孔部。Another composite crank proposed by the present invention includes: a first metal piece, having a first contact hole portion and a first connection section, the first connection section defines a first chamber and a first opening; A second metal piece arranged at intervals from the first metal piece, the second metal piece has a second contact hole portion and a second connecting section, the second connecting section defines a second chamber and a second opening ;as well as An outer fiber piece covering the first metal piece and the second metal piece arranged at intervals, so that the outer fiber piece, the first metal piece and the second metal piece together define a socket space formed in the aforementioned three pieces between, the socket space communicates with the first chamber and the second chamber; Wherein, the first connecting segment integrally extends from the first contact hole portion toward the second metal piece, and the second connecting segment integrally extends from the second contact hole portion toward the first metal piece; Wherein, the outer fiber piece integrally covers the first connecting hole portion, the first connecting section, the socket space, the second connecting section and the second connecting hole portion.
本發明所提出的再一複合曲柄,包含: 一第一金屬件,具有一第一接孔部與一第一連接段,該第一連接段定義一第一容室與一第一開口; 一第二金屬件,與該第一金屬件間隔排列,該第二金屬件具有一第二接孔部與一第二連接段,該第二接孔部具有一第二接孔,該第二連接段定義一第二容室與一第二開口;以及 一外纖維件,包覆該第一金屬件與該第二金屬件,該外纖維件與該第一金屬件、該第二金屬件共同定義一套接空間形成於前述三者之間,該套接空間與該第一金屬件之該第一容室及該第二金屬件之該第二容室連通; 其中,該第二金屬件包含一環槽圍繞於該第二接孔的外周,並與該第二接孔之間以一孔壁分隔,該環槽與該第二容室連通。Another composite crank proposed by the present invention includes: a first metal piece, having a first contact hole portion and a first connection section, the first connection section defines a first chamber and a first opening; A second metal piece is arranged at intervals from the first metal piece, the second metal piece has a second contact hole portion and a second connection section, the second contact hole portion has a second contact hole, the second the connecting section defines a second chamber and a second opening; and An outer fiber piece wraps the first metal piece and the second metal piece, the outer fiber piece, the first metal piece, and the second metal piece together define a socket space formed between the three, the The socket space communicates with the first chamber of the first metal piece and the second chamber of the second metal piece; Wherein, the second metal piece includes a ring groove surrounding the outer circumference of the second contact hole, and is separated from the second contact hole by a hole wall, and the ring groove communicates with the second chamber.
較佳的是,該第一金屬件的第一接孔部具有一第一接孔,該第一容室在該複合曲柄之一長度方向的深度,大於該第一金屬件於該第一容室與該第一接孔之間的厚度。Preferably, the first contact hole portion of the first metal piece has a first contact hole, and the depth of the first chamber in a length direction of the composite crank is greater than that of the first metal member in the first chamber. The thickness between the chamber and the first contact hole.
較佳的是,該第二金屬件的第二接孔部具有一第二接孔,該第二容室在該複合曲柄之一長度方向的深度,大於該第二金屬件於該第二容室與該第二接孔之間的厚度。Preferably, the second contact hole portion of the second metal member has a second contact hole, and the depth of the second chamber in a length direction of the composite crank is greater than that of the second metal member in the second chamber. The thickness between the chamber and the second contact hole.
本發明所提出的複合曲柄的製造方法,其包含: 提供一第一金屬件、一第二金屬件,與一芯材; 成形一補強纖維件於該芯材上,該補強纖維件穿設於該芯材; 將帶有該補強纖維件的該芯材的相對兩端分別插入該第一金屬件之一第一容室與該第二金屬件之一第二容室;以及 將外纖維件包覆成形於該第一金屬件、該第二金屬件及該芯材之表面並以模型熱壓成型,使該外纖維件與該補強纖維件結合; 其中,該補強纖維件具有一肋壁,該肋壁沿該複合曲柄的一厚度方向與一長度方向延伸,且該補強纖維件由該肋壁相對二側彎折出二貼合段,該二貼合段沿該複合曲柄的一寬度方向與該長度方向延伸而分別貼合於該外纖維件。The manufacturing method of the composite crank proposed by the present invention comprises: providing a first metal piece, a second metal piece, and a core material; forming a reinforcing fiber piece on the core material, the reinforcing fiber piece passing through the core material; Inserting opposite ends of the core material with the reinforcing fiber member into a first chamber of the first metal member and a second chamber of the second metal member respectively; and overmolding the outer fiber piece on the surface of the first metal piece, the second metal piece and the core material and molding by hot pressing a mold, so that the outer fiber piece is combined with the reinforcing fiber piece; Wherein, the reinforcing fiber piece has a rib wall, the rib wall extends along a thickness direction and a length direction of the composite crank, and the reinforcing fiber piece is bent from two opposite sides of the rib wall to form two fitting sections, the two The bonding section extends along a width direction and a length direction of the composite crank and is respectively bonded to the outer fiber piece.
本發明利用外纖維件包覆第一金屬件與第二金屬件的方式減輕複合曲柄的重量,並利用設於該套接空間的補強纖維件,提升該複合曲柄的厚度方向剛性,而讓本發明的複合曲柄具有重量輕,並可以提升該複合曲柄的厚度方向結構強度的優點。In the present invention, the weight of the composite crank is reduced by covering the first metal piece and the second metal piece with the outer fiber piece, and the rigidity in the thickness direction of the composite crank is improved by using the reinforcing fiber piece arranged in the socket space, so that the The composite crank of the invention has the advantages of light weight and enhanced structural strength in the thickness direction of the composite crank.
請參考圖1、圖2、圖3A/3B及圖4A/B,本發明的複合曲柄1之第一較佳實施例,其適用於一自行車,為方便說明,各圖式中定義一長軸X、一短軸Y,與一參考軸Z或複合曲柄1的厚度方向,長軸X與短軸Y分別與參考軸Z或複合曲柄1的厚度方向互相垂直,且短軸Y垂直於長軸X。為便於說明,本發明各實施例是以平直的複合曲柄1為例;在本發明其他實施例中,複合曲柄1的上表面、下表面與側表面,以及所有元件與結構,皆可能沿著參考軸Z、長軸X及短軸Y其中二個或三個方向同時延伸,使得複合曲柄1是具有曲度、扭轉或偏斜,因此平直且單一厚度的曲柄並非必要限制。Please refer to FIG. 1, FIG. 2, FIG. 3A/3B and FIG. 4A/B, the first preferred embodiment of the composite crank 1 of the present invention is suitable for a bicycle. For the convenience of description, a long axis is defined in each drawing. X, a short axis Y, and a reference axis Z or the thickness direction of the composite crank 1, the long axis X and the short axis Y are respectively perpendicular to the reference axis Z or the thickness direction of the composite crank 1, and the short axis Y is perpendicular to the long axis X. For the convenience of description, each embodiment of the present invention takes a flat composite crank 1 as an example; in other embodiments of the present invention, the upper surface, the lower surface and the side surface of the composite crank 1, as well as all the elements and structures, may be along the Two or three directions of the reference axis Z, the long axis X and the short axis Y extend simultaneously, so that the composite crank 1 has curvature, twist or deflection, so a straight crank with a single thickness is not necessarily limited.
複合曲柄1包含第一金屬件10、第二金屬件20、套接空間、外纖維件40,與一或多個補強纖維件30/30a/30b。複合曲柄1主要沿著長軸X延伸,第一金屬件10與第二金屬件20相隔一間距而間隔排列,而在第一金屬件10與第二金屬件20間定義一套接空間S,外纖維件40包覆於第一金屬件10、第二金屬件20與套接空間S的外周,而補強纖維件30則縱向貫穿套接空間S,並連接外纖維件40相對的二內表面。長軸X或稱為第一金屬件10與第二金屬件20的連線方向或複合曲柄1的長度方向,短軸Y或稱複合曲柄1的寬度方向,而參考軸Z或稱為複合曲柄1的厚度方向,本發明的複合曲柄1主要在提升參考軸Z方向或複合曲柄1的厚度方向的結構強度。The composite crank 1 includes a
第一金屬件10,例如可為一鋁件,包含第一接孔部11與第一連接段13,第一接孔部11具有波浪環面狀孔壁,定義一第一接孔110,第一接孔110沿參考軸Z方向或複合曲柄1的厚度方向延伸,第一接孔部11用以與腳踏車下管、後下叉及/或座管匯集處的三通或五通輪穀轉軸連接,本實施例中,第一接孔110為貫穿孔,然第一接孔110亦可設為盲孔,或局部貫穿孔與盲孔的組合;第一連接段13由第一接孔部11延伸,例如可沿長軸X方向延伸,並於遠離第一接孔部11的一端形成一第一開口132,第一連接段13具有沿短軸Y方向延伸之一第一寬度D1。The
第二金屬件20與第一金屬件10間隔排列而以其外廓定義套接空間S,第二金屬件20與第一金屬件10例如可沿長軸X方向間隔排列,第二金屬件20可為一鋁件,第二金屬件20包含一第二接孔部21與一第二連接段23,第二接孔部21定義一第二接孔210,第二接孔210沿參考軸Z方向或複合曲柄1的厚度方向延伸,第二接孔部21用以與腳踏車的腳踏件連接,本實施例中,第二接孔210為一貫穿孔,第二接孔210亦可設為一盲孔;第二連接段23由第二接孔部11延伸,例如可沿長軸X方向朝向第一金屬件10延伸,並於遠離第二接孔部21與鄰近第一金屬件10的一端形成一第二開口232,第二連接段23具有沿短軸Y方向延伸之一第二寬度D2。The
套接空間S形成於複合曲柄1內,並位於第一金屬件10與第二金屬件20之間,且與第一開口132及第二開口232連通;較佳的是,第一連接段13進一步包含有一第一容室131,第一容室131形成於第一連接段13內,並與第一開口132連通,第一容室131的外周環繞形成一第一連接周壁133,第一容室131經第一開口132與套接空間S連通,如圖2所示,該第一容室131在該複合曲柄1的長度方向的深度L1,大於該第一金屬件10於該第一容室131與該第一接孔110之間的厚度T1;第二連接段23進一步包含一第二容室231,第二容室231形成於第二連接段23內,並與第二開口232連通,且第二容室231外周環繞形成一第二連接周壁233,第二容室231經第二開口232與套接空間S連通,如圖2所示,該第二容室231在該複合曲柄1的長度方向的深度L2,大於該第二金屬件20於該第二容室231與該第二接孔210之間的厚度T2。The socket space S is formed in the composite crank 1, located between the
外纖維件40,可為碳纖維、玻璃纖維或其他纖維材質(纖維片材)之樹脂預浸料,其包覆於第一金屬件10、第二金屬件20,與套接空間S的整體外周。圖3A/3B及圖4A/4B所示的補強纖維件30/30a/30b可為碳纖維、玻璃纖維或其他纖維材質(纖維片材)之樹脂預浸料,一或多個補強纖維件30/30a/30b均設置於第一金屬件10與第二金屬件20之間,補強纖維件30/30a/30b包含兩貼合段33/33a/33b與一肋壁31/31a/31b,兩貼合段33/33a/33b分別貼合於外纖維件40沿參考軸Z方向或複合曲柄1的厚度方向的兩相對內側表面,肋壁31/31a/31b設置於套接空間S並連接兩貼合段33/33a/33b。在不同實施例中,補強纖維件30/30a/30b及其兩貼合段33/33a/33b與肋壁31/31a/31b,基本上沿著第一金屬件10與第二金屬件20之直線連線(例如前述圖式的平直複合曲柄1)或曲線連線方向(例如具有曲度的複合曲柄1)延伸,兩貼合段33/33a/33b由肋壁31/31a/31b延伸彎折後,才貼附到外纖維件40沿複合曲柄1的厚度方向的二相對內側表面。The
較佳的是,補強纖維件30/30a/30b的肋壁31/31a/31b沿長軸X(或稱第一金屬件10與第二金屬件20之連線方向)與參考軸Z(或複合曲柄1的厚度方向)延伸,兩貼合段33/33a/33b沿長軸X延伸;於本實施例中,補強纖維件30/30a/30b的縱長兩端分別與第一金屬件10及第二金屬件20鄰接。Preferably, the
於本實施例中,補強纖維件30/30a/30b之兩貼合段33/33a/33b分別由肋壁31/31a/31b朝向沿短軸Y(複合曲柄1的寬度方向)之相反方向延伸,而形成一Z字形 (圖4A/4B),第一金屬件10的第一連接段13的第一寬度D1大於第二金屬件20的第二連接段23的第二寬度D2 (圖3A/3B),且補強纖維件30/30a/30b之各貼合段33/33a/33b鄰近第一金屬件10一端沿短軸Y(複合曲柄1的寬度方向)之寬度尺寸大於鄰近第二金屬件20一端沿短軸Y(複合曲柄1的寬度方向)之寬度尺寸,而可提升複合曲柄1的鄰近第一金屬件10的部分的強度。在其他實施例中,貼合段33/33a/33b也可以設置成固定的寬度。In this embodiment, the two adhering
圖2中,補強纖維件30縱長兩端,分別與第一金屬件10第一連接段13、及與第二金屬件20第二連接段23間有間隙G1/G2,外纖維件40形成二內環肋41a/41b於間隙G1/G2處,即內環肋41a位於補強纖維件30一縱長端與第一金屬件10第一連接段13間,內環肋41b位於補強纖維件30另一縱長端與第二金屬件20第二連接段23之間。In FIG. 2, there are gaps G1/G2 between the two longitudinal ends of the reinforcing
利用外纖維件40包覆具有中空的第一連接段13/第二連接段23的第一金屬件10/第二金屬件20,以及兩者間的套接空間S的方式,可以減輕複合曲柄1的重量,並利用設於套接空間S內的補強纖維件30/30a/30b,提升複合曲柄1在厚度方向的結構強度,而讓本發明的複合曲柄1具有重量輕,並可以提升複合曲柄1的厚度方向剛性的優點。By using the
請參考圖5、圖6及圖12,上述的複合曲柄1之製造方法,其包含以下步驟。下列說明以製造方法為主,結構或元件特徵未盡之處請參考其他實施例圖式與對應的文字說明;未於以下製程直接提及的其他實施例的元件特徵或結構,本領域通常知識者也可以應用以下的製程步驟,搭配元件特徵或結構的描述而予以實現。Please refer to FIG. 5 , FIG. 6 and FIG. 12 , the above-mentioned manufacturing method of the composite crank 1 includes the following steps. The following description is mainly based on the manufacturing method. For details of the structure or component features, please refer to the drawings and corresponding text descriptions of other embodiments; the component features or structures of other embodiments that are not directly mentioned in the following process are generally known in the art. Alternatively, the following process steps can be applied to realize the description in conjunction with the description of the features or structures of the components.
步驟S1:提供一第一金屬件10、一第二金屬件20,與一縱長延伸的芯材50。為方便說明,以下以平直的複合曲柄1為例,故將相互垂直之長軸X、短軸Y及參考軸Z作為方向參考。但如前所述,在不同實施例中複合曲柄1是可以具有曲度、扭轉或偏斜、可變厚度/寬度,因此長軸X應可替代為第一金屬件10與第二金屬件20間的直線連線或曲線連線方向,短軸Y應可替代為複合曲柄1的寬度方向,參考軸Z應可替代為複合曲柄1的厚度方向,並且前述連線方向、寬度方向與厚度方向,並無彼此垂直的絕對必要,以順應具有曲度、扭轉或偏斜、厚度/寬度不一的複合曲柄1。Step S1 : providing a
第一金屬件10可以為用以連接自行車五通芯軸之鋁件,其包含一第一接孔部11與一第一連接段13,第一接孔部11定義一沿一參考軸Z方向延伸之一第一接孔110,第一連接段13由第一接孔部11沿一長軸X方向延伸,並於遠離第一接孔部11的一端形成一第一開口132,長軸X與參考軸Z互相垂直,第一連接段13內形成有與第一開口132連通的第一容室131。The
第二金屬件20可以為用以連接自行車腳踏件之鋁件,其包含一第二接孔部21與一第二連接段23,第二接孔部21定義一沿參考軸Z方向延伸之一第二接孔210,第二連接段23由第二接孔部21沿長軸X方向延伸,並於遠離第二接孔部21的一端形成一第二開口232,第二連接段23內形成有與第二開口232連通的第二容室231。The
芯材50可為蠟質材料或發泡樹脂,蠟質材料製成的芯材50為可以取出的蠟芯,芯材50沿長軸X方向延伸,芯材50沿長軸X方向的相對兩端分別凸設有一插入部53;芯材50設有一穿槽51與兩嵌槽52,穿槽51為一狹長的貫穿孔,並沿長軸X方向與參考軸Z方向或複合曲柄1/芯材50的厚度方向延伸,兩嵌槽52分別凹設於芯材50沿參考軸Z方向或複合曲柄1/芯材50的厚度方向的相對側的表面,且與穿槽51連通,兩嵌槽52分別由穿槽51朝向沿短軸Y之方向延伸。The
步驟S2:成形一補強纖維件30於芯材50上,補強纖維件30可以使用前述纖維片材之樹脂預浸料,穿過芯材50的穿槽51後,將補強纖維件30突出芯材50沿參考軸Z方向相對側的區段,分別彎折而貼附於芯材50沿參考軸Z方向的相對側表面,並分別容置於芯材50的兩嵌槽52內,而讓補強纖維件30穿設於芯材50的區段形成一肋壁31,貼合於芯材50沿參考軸Z方向的相對側的區段形成兩貼合段33。Step S2: forming a reinforcing
步驟S3:將帶有補強纖維件30的芯材50的相對兩端分別插入第一金屬件10之第一開口132與第二金屬件20之第二開口232。將芯材50沿長軸X方向的相對兩端的插入部53分別插入第一金屬件10的第一開口132與第二金屬件20的第二開口232,而使插入部53插設於第一金屬件10的第一容室131與第二金屬件20的第二容室231內,而讓芯材50的外表面與第一金屬件10及第二金屬件20的外表面齊平,且補強纖維件30的貼合段33與第一金屬件10及第二金屬件20沿參考軸Z方向的相對側的外表面齊平。Step S3: Insert the opposite ends of the
步驟S4:將外纖維件40包覆於第一金屬件10、第二金屬件20及芯材50之表面並以模型熱壓成型。外纖維件40可以使用一或複數片前述纖維片材之樹脂預浸料,將外纖維件40包覆於第一金屬件10、第二金屬件20、芯材50與補強纖維件30組接完成的半成品的外表面後,外纖維件40會覆蓋於補強纖維件30的兩貼合段33的外側,再將已包覆外纖維件40之半成品放入模具中進行熱壓成型,在熱壓成型的過程中,模具的高溫可以由外纖維件40傳導至補強纖維件30,而使外纖維件40的纖維預浸料以及補強纖維件30的纖維預浸料固化成型,並讓外纖維件40、第一金屬件10、第二金屬件20、芯材50,與補強纖維件30結合成為一體。Step S4 : wrapping the
步驟S5:如有必要,將芯材50自外纖維件40內取出。芯材50為蠟芯時,本發明製造方法更包含提供出蠟孔洞,將芯材50熱熔流出外纖維件40之外。取出的方式可以先在外纖維件40對應芯材50的位置進行鑽孔,並將鑽孔完成的曲柄放入烤箱中加熱熔蠟,而讓熔化後的芯材50自鑽孔處流出,並讓原本芯材50的空間形成一中空的套接空間S,而可以得到中空並且具有補強肋之複合曲柄1。由於熔蠟僅需微小孔徑就能流出,鑽孔填補後能夠維持相對高的結構強度,也不會殘留芯材50餘料於複合曲柄1中,徒增重量或敲擊聲響。鑽孔處並不限於芯材50未插入第一金屬件10與第二金屬件20的區域,出蠟孔洞也可視需要預留在第一金屬件10及/或第二金屬件20上。芯材50為發泡材料時,由於熱壓過程中芯材50將收縮套箍束固於補強纖維件30上,雖不需取出,也不致造成無謂聲響。Step S5 : if necessary, take out the
請參考圖7,本發明第二較佳實施例中,第二金屬件20的第二接孔部21包含一環槽24,環槽24圍繞於第二接孔210的外周,並與第二接孔210之間以一孔壁211分隔,環槽24與第二容室231連通,而可進一步減輕複合曲柄1的重量;具體而言,第二金屬件20包含沿參考軸Z方向或複合曲柄1的厚度方向互相對合的兩子金屬件201、202,兩子金屬件201、202分別包含一子外環壁221、222與一凸部,子外環壁221、222形成於子金屬件201、202的外周,凸部沿參考軸Z或複合曲柄1的厚度方向朝另一子金屬件201、202的方向凸設於子金屬件201、202內,並與另一子金屬件201、202的凸部相抵,凸部與子外環壁221、222之間形成一個子環槽241、242,各凸部內皆形成有沿參考軸Z或或複合曲柄1的厚度方向延伸之一子接孔2101、2102,而於子接孔2101、2102的外周形成一子孔壁2111、2112,兩子金屬件201、202的子孔壁2111、2112相抵,而形成第二金屬件20的孔壁211,兩子金屬件201、202的子接孔2101、2102互相對齊而連通形成第二金屬件20的第二接孔210,兩子金屬件201、202的子環槽241、242相連通而形成環繞於孔壁211的外周的環槽24。Referring to FIG. 7 , in the second preferred embodiment of the present invention, the second
請參考圖8至圖10,本發明的第三較佳實施例中,複合曲柄1最終產品可進一步包含一芯材50,芯材50可以使用發泡樹脂,芯材50設置於套接空間S,芯材50的相對兩端分別插入第一金屬件10的第一開口132與第二金屬件20的第二開口232,且補強纖維件30之肋壁31穿設於芯材50,而可以利用芯材50支撐於套接空間S內,提升複合曲柄1在模型熱壓成型過程的結構強度。Referring to FIGS. 8 to 10 , in the third preferred embodiment of the present invention, the final product of the composite crank 1 may further include a
具有芯材50的複合曲柄1的製造方法,是將第一金屬件10、第二金屬件20、芯材50,與補強纖維件30組接完成後,再將外纖維件40包覆成形於第一金屬件10、第二金屬件20,與芯材50表面,並與補強纖維件30之兩貼合段33結合後,即可以得到具有芯材50的複合曲柄1,而不需要再將芯材50從外纖維件40內取出。芯材50為發泡材料時,由於模型熱壓過程後芯材50將收縮束箍固著於補強纖維件30上,雖不需取出,也不致造成無謂聲響。The manufacturing method of the composite crank 1 with the
較佳的是,補強纖維件30之肋壁31伸入第一金屬件10之第一容室131與第二金屬件20之第二容室231,而讓補強纖維件30之肋壁31與第一金屬件10及第二金屬件20結合,藉以增加結構性;補強纖維件30之兩貼合段33,可進一步分別貼附於第一金屬件10之第一容室131沿參考軸Z方向的相對側,以及第二金屬件20之第二容室231沿參考軸Z方向的相對側,芯材50的穿槽51延伸至芯材50的插入部53,插入部53於沿參考軸Z相對側的表面分別凹設有插入嵌槽525,插入嵌槽525與嵌槽52相接並形成一段差,補強纖維件30的貼合段33可以順著段差容置於嵌槽52與插入嵌槽525內,並選擇性地貼附於第一金屬件10的第一容室131與第二金屬件20的第二容室231的表面,補強纖維件30的貼合段33伸入第一容室131與第二容室231的兩末端部份,可以因而與未伸入第一容室131與第二容室231的本體段具有段差。其中,補強纖維件30的貼合段33與第一容室131及第二容室231的表面之間可以貼附一膠材,而讓補強纖維件30的貼合段33可以更穩固的結合於第一容室131與第二容室231的內表面。在不同實施例中,補強纖維件30之肋壁31及/或二貼合段33可單獨或同時伸入第一金屬件10之第一容室131與第二金屬件20之第二容室231。Preferably, the
在不同實施例中,本發明複合曲柄1之製造方法,可以包含將補強纖維件30之兩貼合段33分別由肋壁31之長邊彎折後朝向複合曲柄1之寬度方向延伸的步驟,沿寬度方向延伸可代表單補強纖維件30a二貼合段33a同時朝相同方向(圖11)、或單補強纖維件30二貼合段33分別朝相反方向(圖4A/4B)、或如圖11雙補強纖維件30a/30b的各貼合段33a/33b於肋壁31兩端沿短軸Y方向(寬度方向)的相對側延伸。在其他實施例中,本發明複合曲柄1之製造方法,可以包含將補強纖維件30之肋壁31及/或二貼合段33伸入第一金屬件10之第一開口132與第二金屬件20之第二開口232的步驟。在另一實施例中,第一金屬件10的第一連接段13設有第一容室131,第二金屬件20的第二連接段23設有第二容室231,本發明複合曲柄之製造方法可以包含:將補強纖維件30之兩貼合段33分別經第一開口132與第二開口232,分別伸入貼附於第一金屬件10之第一容室131內表面,以及第二金屬件20之第二容室231內表面。In different embodiments, the manufacturing method of the composite crank 1 of the present invention may include the step of bending the two adhering
較佳的是,第二金屬件20的兩子金屬件201、202,分別設有相對合之至少一凹部252與至少一凸部251,提升組裝的便利性與穩固性。Preferably, the two
請配合參考圖11,於本發明的第四較佳實施例中,兩補強纖維件30a/30b的各貼合段33a/33b於肋壁31兩端沿短軸Y方向(寬度方向)的相對側延伸,而使補強纖維件30a/30b的整體截面呈H字形,例如補強纖維件30a/30b可以利用兩碳纖維預浸料分別折成U字形與倒U字形後,經由模具熱壓固化成型而結合成H字形的補強纖維件30a/30b,而利用H字形的補強纖維件30a/30b提升複合曲柄1的結構強度。圖11與圖4A/4B相較,圖4A/4B單一補強纖維件30/30a/30b本身的二貼合段33/33a/33b由肋壁31/31a/31b之長邊彎折後,二貼合段33/33a/33b可視需要沿同向或反向延伸(在短軸Y或複合曲柄1的寬度方向上);此外,圖4A/4B中Z字架構的補強纖維件30a/30b,可以協助具有曲度或偏斜結構的複合曲柄1用於荷載特定方向的剪應力。Please refer to FIG. 11 , in the fourth preferred embodiment of the present invention, the
於其他實施例中,在合適的製造工藝配合下,前述貼合段33/33a/33b與外纖維件40二相對內表面也可以不需要大面積的彎折與面貼附,貼合段33/33a/33b可以僅僅作為肋壁31/31a/31b兩側與外纖維件40二相對內表面的貼附端面,換言之,補強纖維件30/30a/30b可以僅為1字形,而貼合段33/33a/33b並沒有彎折。In other embodiments, under the coordination of suitable manufacturing processes, the opposite inner surfaces of the aforesaid
以上所述,僅是本發明的較佳實施例,並非對本發明做任何形式上的限制,任何所屬技術領域中具有通常知識者,若在不脫離本發明所提技術特徵的範圍內,利用本發明所揭示技術內容所做出局部更動或修飾的等效實施例,並且未脫離本發明的技術方案內容,均仍屬於本發明技術特徵的範圍內。The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Anyone with ordinary knowledge in the technical field, if they do not deviate from the technical characteristics of the present invention, use the present invention Equivalent embodiments with partial changes or modifications made to the technical content disclosed in the invention, and which do not depart from the technical solution content of the invention, still fall within the scope of the technical features of the invention.
1:複合曲柄
10:第一金屬件
11:第一接孔部
110:第一接孔
13:第一連接段
131:第一容室
132:第一開口
133:第一連接周壁
20:第二金屬件
201,202:子金屬件
21:第二接孔部
210:第二接孔
2101,2102:子接孔
211:孔壁
2111,2112:子孔壁
221,222:子外環壁
23:第二連接段
231:第二容室
232:第二開口
233:第二連接周壁
24:環槽
241,242:子環槽
251:凸部
252:凹部
30:補強纖維件
31:肋壁
33:貼合段
40:外纖維件
41a,41b:內環肋
50:芯材
51:穿槽
52:嵌槽
525:插入嵌槽
53:插入部
X:長軸
Y:短軸
Z:參考軸
D1:第一寬度
D2:第二寬度
G1,G2:間隙
S:套接空間
L1:深度
L2:深度
T1:厚度
T2:厚度1: Compound crank
10: The first metal piece
11: The first contact hole
110: The first contact hole
13: The first connection segment
131: The first chamber
132: The first opening
133: First connecting peripheral wall
20:
圖1為本發明第一較佳實施例的立體外觀圖。 圖2為本發明第一較佳實施例的俯視剖面圖,顯示其具有一個補強纖維件。 圖3A為本發明另一較佳實施例的側視剖面圖,顯示其具有多個補強纖維件。 圖3B為本發明第一較佳實施例的側視剖面圖,顯示其具有一個補強纖維件。 圖4A為本發明另一較佳實施例的側視剖面圖,顯示其具有多個補強纖維件。 圖4B為本發明第一較佳實施例的端視剖面圖。 圖5為本發明第一較佳實施例的立體分解圖(省略外纖維件)。 圖6為本發明第一較佳實施例的包覆外纖維件的動作示意圖。 圖7為本發明第二較佳實施例的立體分解圖(省略外纖維件)。 圖8為本發明第三較佳實施例的立體分解圖(省略外纖維件)。 圖9為本發明第三較佳實施例的俯視剖面圖。 圖10為本發明第三較佳實施例的側視剖面圖。 圖11為本發明第四較佳實施例的端視剖面圖。 圖12為本發明製造方法的方塊圖。FIG. 1 is a three-dimensional external view of the first preferred embodiment of the present invention. FIG. 2 is a top sectional view of the first preferred embodiment of the present invention, showing that it has a reinforcing fiber element. 3A is a side cross-sectional view of another preferred embodiment of the present invention, showing that it has a plurality of reinforcing fiber elements. 3B is a side cross-sectional view of the first preferred embodiment of the present invention, showing a reinforcing fiber element. FIG. 4A is a side cross-sectional view of another preferred embodiment of the present invention, showing a plurality of reinforcing fiber elements. 4B is an end sectional view of the first preferred embodiment of the present invention. FIG. 5 is an exploded perspective view of the first preferred embodiment of the present invention (with the outer fiber member omitted). FIG. 6 is a schematic view of the action of the coated outer fiber member according to the first preferred embodiment of the present invention. FIG. 7 is an exploded perspective view of the second preferred embodiment of the present invention (with the outer fiber member omitted). FIG. 8 is an exploded perspective view of the third preferred embodiment of the present invention (with the outer fiber member omitted). 9 is a top sectional view of the third preferred embodiment of the present invention. 10 is a side cross-sectional view of the third preferred embodiment of the present invention. 11 is an end sectional view of the fourth preferred embodiment of the present invention. FIG. 12 is a block diagram of the manufacturing method of the present invention.
1:複合曲柄1: Compound crank
10:第一金屬件10: The first metal piece
11:第一接孔部11: The first contact hole
110:第一接孔110: The first contact hole
13:第一連接段13: The first connection segment
131:第一容室131: The first chamber
20:第二金屬件20: Second metal piece
201,202:子金屬件201, 202: Sub-metal parts
210:第二接孔210: The second contact hole
211:孔壁211: Hole Wall
231:第二容室231: The second chamber
24:環槽24: Ring groove
40:外纖維件40: Outer fiber piece
41a,41b:內環肋41a, 41b: inner ring rib
50:芯材50: core material
X:長軸X: long axis
Z:參考軸Z: reference axis
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110131707A TWI777751B (en) | 2020-06-12 | 2020-06-12 | Composite crank and method of making the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110131707A TWI777751B (en) | 2020-06-12 | 2020-06-12 | Composite crank and method of making the same |
Publications (2)
Publication Number | Publication Date |
---|---|
TW202200440A TW202200440A (en) | 2022-01-01 |
TWI777751B true TWI777751B (en) | 2022-09-11 |
Family
ID=80787767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW110131707A TWI777751B (en) | 2020-06-12 | 2020-06-12 | Composite crank and method of making the same |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI777751B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060075846A1 (en) * | 2001-06-27 | 2006-04-13 | Campagnolo, S.R.I. | Bicycle crank and method for manufacturing the same |
TWM445546U (en) * | 2012-09-07 | 2013-01-21 | Qi-Yi Bai | Bicycle crank |
CN104724242A (en) * | 2013-12-20 | 2015-06-24 | 什拉姆有限责任公司 | Bicycle crank arm assembly |
US20150266541A1 (en) * | 2014-03-18 | 2015-09-24 | Holger Faupel | Crank arm for a bicycle pedal crank system and a method for its production |
-
2020
- 2020-06-12 TW TW110131707A patent/TWI777751B/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060075846A1 (en) * | 2001-06-27 | 2006-04-13 | Campagnolo, S.R.I. | Bicycle crank and method for manufacturing the same |
TWM445546U (en) * | 2012-09-07 | 2013-01-21 | Qi-Yi Bai | Bicycle crank |
CN104724242A (en) * | 2013-12-20 | 2015-06-24 | 什拉姆有限责任公司 | Bicycle crank arm assembly |
US20150266541A1 (en) * | 2014-03-18 | 2015-09-24 | Holger Faupel | Crank arm for a bicycle pedal crank system and a method for its production |
Also Published As
Publication number | Publication date |
---|---|
TW202200440A (en) | 2022-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7712758B2 (en) | Bicycle frame construction | |
EP1803635B1 (en) | Bicycle having multiple tube frame structure | |
US4923203A (en) | Composite bicycle frame with crossed tubular portions | |
US20060075846A1 (en) | Bicycle crank and method for manufacturing the same | |
US5941135A (en) | Bicycle crankshaft assembly | |
US6123353A (en) | Method of joining and reinforcing molded plastic bicycle frames | |
US9302733B2 (en) | Bicycle crank assembly | |
WO2003024185A2 (en) | High performance bicycle crank | |
WO2005068284A1 (en) | Crank for bicycle and method of producing the same | |
US7887078B2 (en) | Customizable carbon frames for bicycles or other vehicles | |
TW202146281A (en) | Composite crank and the manufacturing method thereof | |
TWI777751B (en) | Composite crank and method of making the same | |
US20070186718A1 (en) | Bicycle cranks composed of composite material and metal parts and method for making the same | |
TWM600723U (en) | Composite crank | |
JP2003072666A (en) | Bicycle crank and its manufacturing method | |
US5676780A (en) | Method of making a single rear fork bicycle frame | |
WO2008056204A1 (en) | Bicycle having a single, hollow primary tube | |
WO2016166204A1 (en) | Carbon fibre bicycle frame | |
CA2557960C (en) | Bicycle frame construction | |
EP3953243A1 (en) | Arrangement for a bicycle frame and method of manufacture | |
ITUB20154748A1 (en) | Bottom bracket and bicycle frame with bottom bracket box. | |
WO2024100543A1 (en) | Bicycle frame and method for making said bicycle frame | |
ITMI951896A1 (en) | REGULATORY COMPOSITE BICYCLE FRAME AND PROCEDURE FOR ITS CONSTRUCTION | |
ITBO20010719A1 (en) | REAR CARRIAGE ELEMENT PARTICULARLY FOR CYCLES | |
TWM525893U (en) | Bicycle crank assembly |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent |