1244999 九、發明說明： 【發明所屬之技術領域】 本發明係屬於一自行車之技術領域，尤指一種安裝於 自行車之座管上，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、 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。 請參閱第六圖所示，前變速器（50)通常是藉由一 固定座（5 1)固定在車架之座管（60)上， 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，一般 座管（6 0)與後下又（6 2)之夾角設計有兩種，一種 為63〜66夾角，另一種為66。〜69。夾角，故前變速 器亦必需因應該角度而製成兩種規格，對於製造者而言， 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，車架之座管角 度的可變化性極小，車架型體設計亦受到限制。故，現有 4 1244999 月’j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 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 Φ 蔓速為本體穿置固定之固定座，固定座之外周緣設有一突 部，於突部上設有一穿孔，而變速器本體係包括一導板組 以及一結合部，於結合部上設有一穿置於穿孔之結合桿， /、、々a杯之自由端穿過穿孔並且與一螺帽螺設固定，其中 ，變速器本體之結合部與固定座之突部之間的結合桿上， °又有一凋整件，於調整件與突部之間夾設一穿置於結合桿 上的墊片，該墊片與調整件之間呈弧形配合，而墊片係與 犬邛表面呈平面貼合；固定座之突部與螺帽之間設有一穿 φ 置於結合桿上的墊片，而墊片與螺帽之間設有一穿置於結 合桿上之調整件，該調整件與墊片之間呈弧形配合，而墊 片與突部表面呈平面貼合。 實知上述技術手段以後，本發明之變速器本體藉由結 a桿上之墊片與調整件之間呈弧形配合，而塾片與調整件 之間亦呈弧形配合，使得變速器本體可以調整角度，由於 本發明具有可以調整角度之特點而衍生數項優點： 1·僅單一款規格即可以配合安裝於不同角度之座管 由於本舍明呈可調整角度狀，故當座管之角度改變時， 5 1244999 仍可以安裝本發明，再予以調整至適當角度即可。 2 ·簡化生產管制：由於本發明只要單一款設計，即 可以配合多種角度變化之座管，對於生產者而言，不再需 要依不同灯單製造不同款式的前變速器，故可以化 管制之工作。 3·車架之座管角度設計不再受到前變速器之限制， 而可以加以變化，使車架設計更加靈活。 【實施方式】 請參閱第一圖所示，自行車前變速器之基本構件係包 括一變速器本體（10)、一藉以固定於座管（60)之1244999 IX. Description of the invention: [Technical field to which the invention belongs] The present invention belongs to the technical field of a bicycle, especially a transmission that is mounted on the seat tube of a bicycle and can be moved by a chain to change the riding speed. [Prior Art] In order to make the bicycle suitable for riding on various road conditions, such as uphill, downhill, flat road, bumpy road, etc., the front and rear sprockets are respectively composed of several sprocket wheels of different sizes and diameters. The front and rear transmissions on one side of the bicycle can be controlled by turning the controller on the handlebar of the bicycle to control the front transmission or the rear transmission to shift the chain to change the chain to mesh with the gears with different outer diameters, thereby changing the front and rear. Gear ratio and load when stepping on. Please refer to the sixth figure, the front transmission (50) is usually fixed on the seat tube (60) of the frame by a fixing seat (51), and the two guide plates (5 2) of the front transmission (50) They are located on both sides of the bicycle chain (6 1) respectively, so as to move the chain (6 1). However, in order to meet the ergonomic design and to meet the needs of the characteristics of the bicycle, the general seatpost (60) and the rear seat (6 2) There are two kinds of included angle designs, one is 63 ~ 66 included, and the other is 66. ~ 69. Because of the angle, 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 seatpost angle of the frame is extremely small, and the frame body design is also limited. Therefore, it is necessary to improve the existing transmission. [Summary of the Invention] In order to improve the aforesaid shortcomings, the main purpose of the present invention is to provide a bicycle front derailleur that can be freely adjusted in angle to be suitable 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 fixing seat for fixing and dispersing the body. The outer periphery of the fixing seat is provided with a protrusion and a perforation is provided on the protrusion. The transmission system includes a guide plate group. And a coupling part, a coupling rod provided with a perforation is provided on the coupling part, and the free ends of the cups pass through the perforation and are screwed with a nut, wherein the coupling part of the transmission body and the fixing seat On the connecting rod between the protrusions, there is a whole piece. A spacer is inserted between the adjusting member and the protrusion, and the spacer is in an arc shape with the adjusting member. , And the gasket is flatly attached to the surface of the dog; a gasket is placed between the protrusion of the fixed seat and the nut on the joint rod, and a gasket is provided between the gasket and the nut. The junction of the adjustment lever engagement member, engagement between the adjusting member and the arcuate pad, and the pad portion projecting sheet bonded planar surface. After knowing the above technical means, the transmission body of the present invention has an arc-shaped fit between the washer on the a rod and the adjustment piece, and the arc-shaped fit between the cymbal and the adjustment piece also allows the transmission body to be adjusted. Angle, because the present invention has the characteristics of adjustable angle, it has several advantages: 1. Only a single specification can be installed with seat tubes of different angles. Because Ben Sheming has an adjustable angle, the angle of the seat tube changes. 5 1244999 can still install the present invention, and then adjust it to an appropriate angle. 2 · Simplify production control: As long as the invention has a single design, it can be used with seatposts with various angle changes. For producers, it is no longer necessary to manufacture different styles of front transmissions according to different light lists, so the control can be controlled. . 3. The seat tube angle design of the frame is no longer restricted by the front transmission, but can be changed to make the frame design more flexible. [Embodiment] As shown in the first figure, the basic components of a bicycle front transmission include a transmission body (10), and a base member fixed to the seat tube (60).
固=座（20)，其中，變速器本體（10)係包括一可 被操控呈左右偏擺，以撥動鏈條之邕把〜、 ’於突部（2 1 )上設 一結合部（1 2 )，於結合部（ 3)，其自由端設為一螺桿部（ 〇 )之外周緣設有一突部（2 1 有-供結合桿（1 3 )穿置之穿孔（2 2 )，結合桿Solid = seat (20), wherein the transmission body (10) includes a handle which can be manipulated to swing left and right to move the handle of the chain ~, 'A joint (1 2) is provided on the protrusion (2 1) ), At the free end of the joint part (3), a screw part (0) is provided with a protrusion (2 1 is provided-a perforation (2 2) for the joint rod (1 3) to pass through)
結構作一番設計。Design the structure.
6 1244999 2 2 )設 中未示）13 1) 為沿著固定座（ ，另於結合桿（ ’於該調整件（ 部（2 1 )之間夾制一塾 設有一供 4 之 其中一端 調整件（ 中，係將 2 )，而 者之間可 整件（1 片（4 0 結合桿（1 3 ) 内徑大於結合桿 面係於突部（2 131)之間呈 調整件（1 3 1 墊片（4 0 )則 以調整角度，此 3 1 )端面設為 )則相應設為凹 2 〇)之軸向延伸之長形孔（圖 1 3)之桿體上設有一調整件（ 131)與固定座（20)之突 片（40)，該墊片（40)上 穿置之穿孔（41)，該穿孔（ (1 3 )，並且墊片（40)之 1 )表面平貼，而另一端面則與 圓弧形配合，於本較佳實施例當 )之端面設為凹入之弧槽（1 3 設為突出之弧面（4 2 )，使兩 外，其亦可相反設計，亦即將調 突出之弧面（圖中未示），而塾 入之弧槽，仍可收調整角度之效 另於螺帽（3 0 )與固定座（2 〇 )的突部（2工） 之間夾制有穿置在結合桿（i 3 )上的墊片（4 3 )以及 調整件（44)，調整件（4 4)係夾制於墊#(43) 與螺帽（3 0 )之間，墊片（4 3 )❹中一端面與突部 (2 1 )表面平貼，另一端面與調整件（4 4 )之間則呈 弧形配合，於本較佳實施例當中，調整件（4 4 )朝向墊 片（4 3 )該側係設為弧形凹入狀，而藝片（d q 门、4 J )則相 應設為突出之弧面，使墊片（4 3 )與調整件（4 4 )之 間的角度可以調整。此外，墊片（4 3 )與調整件（4 4 )之間的弧形亦可反向設置，仍可收調整角度之效。 7 1244999 ( 椁 別 螺 田石人例！ X〜时升、m v丄〇 ) 角度時’略微旋鬆螺帽（3〇)，而後調整變 1〇)連同結合桿（13)1適當的角度，即 ： (13)上之調整件（131)以及調整件（44、、^ 在二個勢片（40) "3)上偏轉，，而後再: 緊螺帽（3 0 )即可。 *6 1244999 2 2) The setting is not shown) 13 1) For clamping along the fixed seat (, and between the connecting rod ('between the adjusting member (section (2 1), there is one end of 4 for adjustment Pieces (of which, will be 2), and the entire piece (1 piece (4 0 the inner diameter of the connecting rod (1 3) is larger than the connecting rod surface is tied between the protrusion (2 131) is an adjusting piece (1 3 1 washer (40) is used to adjust the angle, and 3 1) the end face is set to be correspondingly set to be concave 2 0) the axially extending elongated hole (Figure 13) is provided with an adjustment member ( 131) and the protruding piece (40) of the fixed seat (20), the perforation (41) penetrating the gasket (40), the perforation ((1 3), and 1 of the gasket (40)) is flatly attached While the other end face is matched with a circular arc shape, in the preferred embodiment, the end face is set as a concave arc groove (1 3 is set as a protruding arc face (4 2)), so that the two outer faces can also be On the contrary, the protruding arc surface (not shown in the figure) is about to be adjusted, and the arc groove inserted can still adjust the angle. It is also effective in the protrusion of the nut (30) and the fixed seat (20). 2 workers) sandwiched between the connecting rod (i 3) The washer (4 3) and the adjusting member (44), the adjusting member (4 4) are clamped between the pad # (43) and the nut (30), and the washer (4 3) One end surface is flatly attached to the surface of the protrusion (2 1), and the other end surface is in an arc-shaped fit with the adjusting member (4 4). In the preferred embodiment, the adjusting member (4 4) faces the gasket (4). 3) The side is set as an arc-shaped concave shape, and the art piece (dq door, 4 J) is correspondingly set as a protruding arc surface, so that the angle between the gasket (4 3) and the adjusting member (4 4) It can be adjusted. In addition, the arc between the washer (4 3) and the adjustment piece (4 4) can also be set in the reverse direction, and the effect of adjusting the angle can still be obtained. 7 1244999 (椁 别 螺 田 石人 例! X ~ Hour rise, mv 丄 〇) At the angle, 'slightly loosen the nut (30), and then adjust it to 10) together with the appropriate angle of the connecting rod (13) 1, that is: the adjustment piece (131) on (13) and The adjustment pieces (44 ,, ^ are deflected on the two potential plates (40) " 3), and then: Tighten the nut (30). *
由上述可知，本發明設以弧面配合之結合構件， 自由調整變速器本冑（1〇)之角度，以配合自行車= 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（60A)，或者如第五圖所示安裝在爽角較小的座管 (6 0 B )均可適用。iiL，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。 【圖式簡單說明】 第一圖係本發明之立體分解示意圖。 第一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 平面示意圖。 第五圖係本發明實施於與後下叉夾角較小之座管上的 平面示意圖。 第六圖係現有自行車前變速器安裝於座管上之平面示 意圖。 【主要元件符號說明】 8 1244999As can be seen from the above, the present invention provides a curved surface-fitting coupling member to freely adjust the angle of the transmission base (10) to match the bicycle = angle '. Whether the invention is installed on a larger angle as shown in the fourth figure The seatpost (60A) or the seatpost (60B) installed at a small angle as shown in Figure 5 can be used. iiL, according to the present invention, as long as there is only one style, the seatpost can be matched with different angles. The producer does not need to manufacture different styles of front transmissions according to different orders, which can simplify the production process. [Brief description of the drawings] The first figure is a three-dimensional exploded view of the present invention. The first 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 figure is a schematic plan view of the present invention implemented on a seat tube with a large angle between the rear and the bottom. The fifth figure is a schematic plan view of the present invention implemented on a seat tube with a small angle with the chain stay. The sixth figure is a plan view of a conventional bicycle front transmission mounted on a seat tube. [Description of Symbols of Main Components] 8 1244999
(1 ο)變速器本體 (1 2 )結合部 (1 3 1 )調整件 (2 0 )固定座 (2 2 )穿孔 (4 0 )墊片 (4 2 )弧面 (4 4 )調整件 (5 1 )固定座 ( 6 0 ) ( 6 0 A ) (6 1 )鏈條 (11)導板組 (1 3 )結合桿 (1 3 2 )弧槽 (21)突部 (3 0 )螺帽 (4 1 )穿孔 (4 3 )墊片 (5 0 )前變速器 (5 2 )導板 (6 0 B )座管 (6 2 )後下叉(1 ο) Transmission body (1 2) Joint (1 3 1) Adjusting member (2 0) Fixing seat (2 2) Perforation (4 0) Gasket (4 2) Arc surface (4 4) Adjusting member (5 1) Fixed base (6 0) (6 0 A) (6 1) Chain (11) Guide plate group (1 3) Combination rod (1 3 2) Arc groove (21) Projection (3 0) Nut (4 1) Perforated (4 3) Gasket (50) Front derailleur (5 2) Guide plate (60 B) Seat post (62) Rear fork