1245005 九、發明說明： 【發明所屬之技術領域】 一本發明係屬於-自行車之技術領域，尤指一種安裝於 自行車之座管，可撥動鏈條而改變騎乘速度之前變速器 〇 【先前技術】 為了使自行車適合騎乘於各種路況一如上坡、下坡、 φ 平坦路面、顛簸路面等，故將前、後齒盤分別以數個不同 大小徑之齒盤組成，配合設於前、後齒盤的一側的前變速 器、後變速器，當撥動自行車把手上的控制器，即可以控 制前變速器或者後變速器撥動鏈條，改變鏈條嚙合於不同 外徑之齒盤上，藉此改變前、後齒輪之齒輪比，以及踩踏 時之荷重。 請參閱第七圖所示，前變速器（5〇)通常是藉由一 固定座（5 1)固定在車架之座管（6〇)上， 參前變速器（5 0 )的兩導板（5 2 )則分別位於自行車鏈 條（6 1 )之兩側，藉以撥動鏈條（6 1 )，然而，為了 符合人體工學設計’以及因應該自行車之特性需要，一船 座管（6 0)與後下又（6 2)之夹角設計有兩種，_牙重 為63°〜66。夾角，另一種為66°〜69。失角，故前變速 器亦必需因應該角度而製成兩種規格，對於製造者而+ 需要分別製造兩款前變速器而頗不方便。 另一方面，受到前變速器之安裝限制，車架之座总角 度的可變化性極小，車架塑體設計亦受到限制。姑 a 现’現有 4 1245005 前變速器實有加以改良之必要。 【發明内容】 為了改善前述缺失，本發明之主要目的在於提供一種 可以自由調整角度，以適用於不同車架之自行車前變速器 〇 上基於上述目的，本發明之主要技術手段在於提供一種 可調整角度之自行車前變速器，包括一變速器本體、一供 變速器本體穿置固定之環狀固定座，環狀固定座之外周緣 2=犬部’於犬部上設有一穿孔’而變速器本體係包括 -導板組以及-結合部，於結合部上設有一穿置於穿孔之 ―口柃》玄口梓之自由端穿過穿孔並且與一螺帽螺設固 中犬郤上之穿孔係沿著固定座之軸向延伸，形成 長形穿孔’另於螺帽與固定座的突部之間設有一調整件 ，該調整件係穿置於穿桿上，而調整件與突部之接觸面，1245005 IX. Description of the invention: [Technical field to which the invention belongs]-The present invention belongs to the technical field of bicycles, especially a bicycle seatpost, which can be shifted by a chain to change the speed before riding. [Prior Art] In order to make the bicycle suitable for riding on various road conditions, such as uphill, downhill, φ flat road, bumpy road, etc., the front and rear toothed discs are respectively composed of several toothed discs of different sizes and diameters. The front and rear transmissions on one side of the disk, when the controller on the bicycle handlebar is turned, can control the front or rear transmission to shift the chain to change the chain meshing to the gears with different outer diameters, thereby changing the front, The gear ratio of the rear gear and the load when stepping on it. Please refer to the seventh figure, the front transmission (50) is usually fixed to the seat tube (60) of the frame by a fixing seat (51), and refers to the two guide plates (50) of the front transmission (50). 5 2) are respectively located on both sides of the bicycle chain (6 1), so as to move the chain (6 1). However, in order to meet the ergonomic design and to meet the needs of bicycle characteristics, a boat seat tube (60) There are two kinds of included angle design with the back (6 2), _ tooth weight is 63 ° ~ 66. The included angle is 66 ° ~ 69. Missing angle, so the front transmission must also be made into two specifications according to the angle. For the manufacturer, it is inconvenient to manufacture two front transmissions separately. On the other hand, limited by the installation of the front transmission, the variability of the total seat angle of the frame is extremely small, and the plastic design of the frame is also limited. There is a need to improve the existing 4 1245005 front transmission. [Summary of the Invention] In order to improve the aforesaid shortcomings, the main object of the present invention is to provide a bicycle front transmission that can be freely adjusted for different frames. Based on the above purpose, the main technical means of the present invention is to provide an adjustable angle The bicycle front transmission includes a transmission body and a ring-shaped fixing seat for the transmission body to be fixed. The outer periphery of the ring-shaped fixing seat 2 = the dog portion is provided with a perforation on the dog portion. The transmission system includes a guide The plate group and the joint part are provided with a free end penetrating through the perforation, and the perforation of the dog is fixed along with the nut on the joint part. An axial extension is formed to form an elongated perforation. An adjustment member is provided between the nut and the protrusion of the fixed seat. The adjustment member is threaded on the penetrating rod, and the contact surface between the adjustment member and the protrusion is,
以，變速器本體之結合部與突部之接觸面均相應設為凹凸 之弧面D 人上述技術手段以後，本發明之變速器本體藉由結 ::與固定座之間呈弧面配合，_定座與調整件之間亦 配合’使得變速器本體可以調整角纟，由於本發明 具有可以調整角度之特點而衍生數項優點： 僅單-款規格即可収合安裝於不㈣度之座管 仍於本發明呈可調整角度狀，故當座管 仍可以安f本發明，再予以調整至適當角度即可。 2 .間化生產管制··由於本發明只要單一款設計，即 5 l245〇〇5 可以配合多種角度變化之座管，對於生產者而言，不再需 要依不同訂單製造不同款式的前變速器，故可以簡化生產 管制之工作。 •車架之座管角度設計不再受到前變速器之 而可以加以變化，使車架設計更加靈活。 【實施方式】 Μ參閱第一圖所示，自行車前變速器之基本構件係包 2變速為本體（10卜一藉以固定於座管（6〇)之 2狀固疋座（20)，其中，變速器本體（1〇)係包括 -可被操控撥動鏈條之導板組（11)，以及一結合部（ 1 2 )，於結合部（1 2 )上突設一結合桿（1 3 )，其 自由端設為一螺桿部Γ π 于杆丨（13〇)，而固定座（20)之外 周緣設有一突部1、 .. 八4 犬丨^ 1 )，於突部（2 1 )上設有一供結 0桿（13)穿置之穿孔a人 扣* 牙札（2 2 )，結合桿（1 3 )以螺 才于部（1 3 0 )穿過穿？丨r 0、 n、 茅孔（2 2 )以後，藉由一螺帽（3 υ)螺設固定，藉以將變速 r 雙迓裔本體（10)固定於固定座 、20)上。而為了使前轡 日日⑼ j雯連态可以自由調整角度，本發 明特將結合部（1 2 )盥 个〜 之閂 ^ 一固疋座（2 0 )之突部（2工） 之間之結合結構作一番設計。 請復參閱第一圖並配合 〇)穿孔（22)的師上圖所不’所述固定座（2 使結合桿（13)且^ 結合#(13)之外徑， 、可凋整偏擺之空間，於本較佳f # 例當中，係將穿孔（2 ? ％不孕乂隹實靶 乙）汉為沿著固定座（2 〇 ) 向延伸之長形孔，而結合 ）之軸 σ座（1 2 )與突部（2 i )之接 6 1245005 觸面係相應設為凹凸狀之弧形配合，使變速器本體（1 ο )可以藉由結合部（1 2)在突部（2 1)表面偏轉，而 於本較佳實施例當中，是將固定座（2 〇 )之突部（2 1 )表面設為弧形凹入狀，而結合部（1 2 )表面則相應設 為弧形突出狀’其亦可以反向設置，使結合部（1 2 )表 面設為弧形凹入（圖中未示）。 另於螺帽（3 〇 )與突部（2 1 )之間設有一穿置在 結合桿（13)上的調整件（43)以及一墊片（44) ’調整件（43)與突部（2 1)之接觸面亦呈凹凸之弧 形配合。 請參閱第三圖所示，本發明當欲調整變速器本體（1 0 )之角度時’略微旋鬆螺帽（3 〇 )，而後調整變速器 本體（1 0)連同結合桿（1 3)至適當的角度，即會改 變變速器本體（1Q)之結合部（12)，以及調整件（ 4 3 )與突部（2 1 )之貼合位置，而後再度螺緊螺帽（ 3 ◦)即可。 由上述可知，本發明設以弧面配合之結合構件，可以 自由調整變速器本體（10)之角度，以配合自行車座管 角度，不論是將本發明如第四圖所示安裝於角度較大的座 管（6 0Α)，或者如第五圖所示安裝在夾角較小的座管 (6 〇 Β )均可適用。故，本發明只要一種款式即可以配 合不同角度變化之座管，生產者不需要依不同訂單製造不 同款式的前變速器，可以簡化生產流程。 此外，由前述第一圖所示可知，第一種實施型態之結 7 1245005 合部（1 2 )、突部（2 1 )、以及調整件（4 3 )等弧 形表面之設計，是沿著穿孔（2 2 )之延伸方向設置並 且與穿孔（22)¾伸方向垂直，其亦可以 所示 ’將變速器本體（1 〇 a ) σΡ(21Α)、調整件（4 著穿孔（22)之延伸方向 方向垂直該斷面則設為平直 安裝於突部（2 1 A )之後 亦可以達到調整變速器本體 【圖式簡單說明】 之結合部（1 2 A )、以及突 3 A )等之弧形表面僅設為沿 設置，而與穿孔（2 2 )延伸 狀’使變速器本體（1 〇 A ) 僅可作上下方向偏擺，如此 (10A)角度之目的。 第一圖係本發明之立體分解示意圖。 第二圖係本發明之平面組合剖面示意圖。 第三圖係本發明調整一角度之平面組合剖面示意圖。 第四圖係、本發明實施於與後下又夾角較大之座管上的 第五圖係本發明實施於與後下又夾角較小之座管上的 示意圖。 第六圖係本發明另—種型態之立體外觀分解示意圖。 第七圖係現有自打車前變速器安裝於座管上之平面示 【主要元件符號說明】 (10) (10A)變速器本體 (丄2) (12A)結合部 (1 3 0 )螺桿部 (1 1 )導板組 (1 3 )結合桿 1245005 (20)固定座 （21) (21A)突部 (2 2 )穿孔 （3 0 )螺帽 (43)調整件 （44)墊片 (50)前變速器 （51)固定座 (5 2 )導板 ( 6 0 ) (60A) (60B)座管 (6 1 )鏈條 （6 2 )後下叉Therefore, the contact surfaces of the joint portion and the protrusion of the transmission body are correspondingly set as convex and concave arc surfaces. After the above technical means, the transmission body of the present invention is fitted with an arc surface between the fixed seat and the fixed seat. The seat and the adjusting part also cooperate with each other to enable the transmission body to adjust the angle. Because the present invention has the feature of adjusting the angle, it has several advantages: Only a single specification can be collapsed and installed on the seat tube without any degree of deviation. Since the present invention has an adjustable angle shape, when the seat tube can still install the present invention, it can be adjusted to an appropriate angle. 2. Intermediate production control · · Since the present invention only requires a single design, that is, 5 1245000 can be seated with a variety of angles, for producers, it is no longer necessary to manufacture different styles of front transmissions according to different orders. Therefore, the work of production control can be simplified. • The design of the seatpost angle of the frame is no longer subject to the changes of the front transmission, which can make the frame design more flexible. [Embodiment] As shown in the first figure, the basic component of the bicycle front transmission is a 2-speed shift body (10), which is fixed to the seatpost (60) by a two-shaped fixed seat (20), where the transmission The main body (10) includes a guide plate group (11) that can be manipulated to move the chain, and a joint (1 2). A joint rod (1 3) is protruded on the joint (1 2). The free end is provided with a screw portion Γ π on the rod 丨 (13〇), and the outer periphery of the fixed seat (20) is provided with a protrusion 1... 8 dogs ^^ 1) on the protrusion (2 1). There is a perforated a-person buckle * teeth (2 2) for the 0 rod (13) to wear, and the combined rod (1 3) to be threaded through the part (1 3 0)?丨 r 0, n, and after the Mao hole (2 2), it is fixed by a nut (3 υ), so that the variable-speed double-dual body (10) is fixed on the fixed seat (20). And in order to make the angle of the previous state of the day and the day can be freely adjusted, the present invention specially combines the joint (1 2) with a bolt ^ between a protrusion (2 workers) of a fixed seat (20). The combination structure is designed. Please refer to the first figure and cooperate with 0) the perforated (22) division of the fixer described in the above figure (2 makes the outer diameter of the connecting rod (13) and ^ ## 13), can be adjusted The space, in this preferred f # example, is the axis σ of the perforation (2?% Infertility target B) as an elongated hole extending along the fixed seat (20) and combined) The contact between the seat (1 2) and the protrusion (2 i) 6 1245005 is correspondingly configured as an arc-shaped mating, so that the transmission body (1 ο) can be connected to the protrusion (2) through the joint (1 2). 1) The surface is deflected, and in the preferred embodiment, the surface of the protrusion (2 1) of the fixed seat (20) is set as an arc-shaped concave shape, and the surface of the joint (1 2) is set accordingly The arc-shaped protrusion shape can also be set in the opposite direction, so that the surface of the joint portion (1 2) is set as an arc-shaped depression (not shown in the figure). In addition, between the nut (30) and the protrusion (2 1), an adjusting member (43) and a washer (44) penetrating on the connecting rod (13) are provided, and the adjusting member (43) and the protrusion are provided. The contact surface of (2 1) is also convex and concave. Referring to the third figure, when the angle of the transmission body (1 0) is to be adjusted in the present invention, the nut (30) is slightly loosened, and then the transmission body (1 0) and the coupling rod (1 3) are adjusted to an appropriate degree. The angle will change the joint part (12) of the transmission body (1Q), and the fitting position of the adjusting part (4 3) and the protruding part (2 1), and then tighten the nut (3 ◦) again. As can be seen from the above, the present invention provides a curved surface-fitting coupling member, which can freely adjust the angle of the transmission body (10) to match the angle of the bicycle seat tube, regardless of whether the invention is installed on a larger angle as shown in the fourth figure The seat tube (60A) or the seat tube (60B) installed at a small included angle as shown in the fifth figure can be applied. Therefore, the present invention can match seatposts with different angles as long as there is only one style. Producers do not need to manufacture different styles of front transmissions according to different orders, which can simplify the production process. In addition, as shown in the foregoing first figure, the design of the curved surface such as the knot 7 1245005 of the first embodiment, such as the joint (1 2), the protrusion (2 1), and the adjustment member (4 3), is Set along the extending direction of the perforation (2 2) and perpendicular to the perforation (22) ¾ extension direction, which can also be shown 'the transmission body (10a) σP (21Α), the adjustment member (4 perforated (22) The extension direction is perpendicular to the cross section. The cross section is set to be installed straight on the protrusion (2 1 A). It can also adjust the transmission body [1 2 A], and the protrusion 3 A), etc. after adjusting the transmission body. The curved surface is only set along the extension, and extends with the perforation (2 2), so that the transmission body (10A) can only be deflected up and down, so that the angle of (10A). The first figure is a three-dimensional exploded view of the present invention. The second figure is a schematic plan sectional view of the present invention. The third figure is a schematic plan view of a combination of planes adjusted by an angle of the present invention. The fourth diagram is a schematic diagram of the present invention implemented on a seat post with a large angle between the rear and the bottom. The sixth figure is an exploded view of the three-dimensional appearance of another type of the present invention. The seventh figure is a plan view of the existing self-driving transmission before the transmission is mounted on the seat tube. [Description of the main component symbols] (10) (10A) Transmission body (丄 2) (12A) Joint (1 3 0) Screw part (1 1 ) Guide plate group (1 3) Combining rod 12450005 (20) Fixing seat (21) (21A) Protrusion (2 2) Perforation (3 0) Nut (43) Adjusting piece (44) Spacer (50) Front transmission (51) Fixed seat (5 2) Guide plate (60) (60A) (60B) Seat post (6 1) Chain (6 2) chain fork