M353891 八、新型說明： 【新型所屬之技術領域】 . 本創作係與自行車傳動結構之技術領域有關，特別是 有關於一種能使自行車之踏板曲柄自由旋轉之齒盤結構。 【先前技術】 • 近來休閒風氣日盛，而且環保意識抬頭，再加上油價 高漲，上班族騎乘自行車的人口愈來愈多，自行車儼然已 經是上班族最愛的交通工具。而其中又以折疊式自行車最 受上班通勤人口的喜愛。 折疊式自行車折疊後的體積小，方便於大眾運輸工具 及電梯中攜帶；或於室内置放，也方便被置放於汽車的行 _ 李箱中載運，這是折疊式自行車廣受喜愛的原因。 φ 為了要讓折疊式自行車被收折成最小的體積，通常必 須在折疊前將踏板曲柄轉至預定位置，才能在折疊後讓 前、後輪靠得最近來減少折疊後的體積。 使用者一旦忘了先倒轉踏板曲柄就將自行車予以折疊 的話，便可能因為折疊時牽動了變速器而使得踏板曲柄難 以被倒轉至定位；或是部份車種（如腳剎車形式的車種） 的踏板曲柄無法被倒轉；這些都會影響到折疊式自行車在 收折時的便利性及功能性。 5 M353891 從而’如何設計出能讓踏板曲柄可以自由旋轉之結 構，便成為本創作之首要課題。 【新型内容】 本創作之主要目的，在於解決上述的問題而提供一種 齒圈與盤體可以相對自由枢轉之齒盤結構。 為達前述之目的，本創作的齒盤結構係由一盤體、一 齒圈與定元件所組成，健_供與自行車之踏板曲 柄結合’且該盤體具有—樞設部以供該齒圈樞設，該齒圈 外緣具有—#部以供與鏈條或皮帶結合，而該盤體具有至 夕一固定孔，該齒圈對應該盤體之固定孔設有至少一定位 孔’且該固定元件係以可組卸之方式穿設於該Μ孔與該 定位孔中。 據此’當該固定元件穿組於該固定孔與較位孔中 時’便能讓該盤體與該齒圈同步轉動；而於該固定元件脫 出^便能讓該齒圈與該盤體相對自由樞轉。從而能便於 折豐式自行車之收折。 本創作之上述及其他目的與優點，不難從下述所選用 4例之詳細說明與關中，獲得深入了解。 所不本創作在某些另件上，或另件之安排上容許有 但所選用之貫施例，則於本說明書中，予以詳細 6 M353891 構造。 說明，並於附圖中展示其 【實施方式j 請參閱圖i至圖4， m /、係本創作所選用之第一實施例 之、.·.構圖不。w 之立體分經岡. U體外硯圖，圖2係本創作 圖.m’圖3係本創作使用狀態之組合剖視示意 ^ 作固u件部份的組合剖視示意圖。 所址成I:盤係由一盤體卜一齒圈2及-固定元件3 u ^本實施财該盤體1係供與對應之轉動元件5 之二1Γ踏板曲柄)結合(如圖3所示)，而該齒圈2 m部21以供與自行車之鏈條或齒皮帶結合。 出δ亥盤體1係由-第-板體11與-第二板體U所組 成1第-板體U與第二板體12之外形大致相似，且其 外㈣小於該齒圈2之齒部2卜而該第—板體η與該第 二板體12相鄰接之-面分別具有—第—凸環⑴與一第二 凸衣⑵’该第―、二凸環⑴、⑵之外徑係與略小於該 相2之内徑’使該第―、二板體η、12結合後能於該第 :Ί體11、12與第-、二凸環⑴、121的外緣形成 一樞接部13(參閱圖3)，在實務上該柩接部13與該齒圈2 之間係呈鬆配合之形態。 4第一、二板體π、12分別於第一、二凸環I〗〗、丨〕】 M353891 的之位置上間隔設有數㈣―結合孔ιι2與數第二結合孔 122二而可分別由螺栓51穿過各第-、二結合孔in、22 貞《又於自行車之轉動元件5 (如：踏板曲柄）上，將該 第一、二板體11、12結合固^為前述之齒盤卜 而為了使该第―、二板體1卜12結合為#盤1時具有 間仏之傳動性’該第—板體u朝該第二板體12凸出有數 個凸邛113 ’而該第二板體12對應各凸部m分別具有一 凹邛123，使各該凸部113與凹部123可相互嵌卡配合。 °亥第一板體11具有一第一固定孔114,而該第二板體 12亦相對具有一第二固定孔124，該齒圈2對應該第一、 一固定孔114、124等間隔設有數個定位孔22，使前述之 固定兀件3係以可組卸之方式穿設於該該第一、二固定孔 114 124與任一定位孔22中，使該盤體1與該齒圈2結 合而可同步轉動。 而本實施例中為了使該固定元件3能便於組卸，係在 忒第一板體11於鄰近該第一固定孔114處設有一座體4， 该座體4具有一穿孔41，而該穿孔41係供一固定柱42穿 設，且該固定柱42之一端具有螺紋421以供鎖固於該第一 板體11之一螺孔115中，而另一端具有一大徑部422，且 於该座體4與該大徑部422之間套設有一彈簧43，使該座 體4於常態下被彈簧43頂抵而靠抵於該第一板體u，且 8 M353891 讓該座體4可沿該固定柱42之軸向活動位移；或以該固定 柱42為軸轉動’而前述之固定元件3則係較於該座體4, 於本實施例中，該固定元件3係為一鎖之結構形態，且其 具有外螺紋31，以供鎖固於該座體4。 而《亥第板體II對應該固定元件3具有一滑槽116 , 該滑槽m係由該固定孔114延伸而出，而呈以該固定柱 42為軸旋轉之弧狀形態’且該滑槽_對於該固定孔114 之端八有EJ槽117，使該固定元件3可於該滑槽ιΐ6 中滑移或後卡定位。 由於該座體4可沿該固定柱42之轴向活動位移，因此 找彈簧43之彈力作用下，該Μ元件3常許係穿設於 第-固疋孔114、124與定位孔22中’讓該盤體j.與 該齒圈2能同步轉動，讓使用者踩踏轉動元件5 (如：踏 板曲柄）時能帶動鏈條進行傳動。 ”當要收折折疊式自行車時’不論車體是否已經被折 ® ’使用者只要將該座體4向外拉，即可使該固定元件3 脫出該第-、二固定孔114、124與該定位孔22，而後再 順著該滑槽116轉動座體4 ’讓該固定元件3嵌卡於該凹 槽1Π甲定位’該齒圈2就可與該盤體】作相對的自由轉 動’讓使用者把踏板曲柄轉動至預定位置，就能讓折義弋 自行車被收折至最小體積的狀態。 9 M353891 箠λ、、：本創作之齒盤結構除了可如前述實施例一般設 置於使用鏈條之自行車外，亦可使用於以齒皮帶傳動的自 ·- 行車，配合齒皮帶使用時，只需將齒圈的齒部變更為配合 齒皮帶的結構形態即可。 再者，該固定元件之設置形態除了如前述實施例一般 配合可活動之座體設置之外，亦可省略該座體，而直接將 • 如同銷一般的蚊元件以可組卸的方S，直接穿組於該盤 體與齒圈之固定孔與定位孔中，如此亦可達到讓齒圈與盤 體相對自由樞轉的功效。 另外，形成樞接部之方式，除了在該第一、二板體相 鄰接之一面分別設置第一、二凸環之結構外，亦可單獨於 該第一板體或第二板體上設置凸環，而於該凸環之外緣形 成樞接部。 • 以上所述實施例之揭示係用以說明本創作，並非用以 限制本創作，故舉凡數值之變更或等效元件之置換仍應隸 屬本創作之範疇。 , 由以上詳細說明，可使熟知本項技藝者明瞭本創作的 確可達成前述目的’實已符合專利法之規定，爰提出專利 申請。 【圖式簡單說明】 M353891 圖1係本創作之立體外觀圖； 圖2係本創作之立體分解圖； 圖3係本創作使用狀態之組合剖視示意圖；及 圖4係本創作固定元件部份的組合刳視示意圖。 【主要元件符號說明】M353891 VIII. New description: [New technical field] The creation is related to the technical field of bicycle transmission structure, especially to a toothed disc structure which can rotate the pedal of the bicycle freely. [Prior Art] • Recently, the leisure atmosphere is growing, and environmental awareness is on the rise. Coupled with the high oil prices, the number of commuters riding bicycles is increasing. Bicycles are already the favorite means of transportation for office workers. Among them, folding bicycles are most popular among commuters. The foldable bicycle has a small size after folding, which is convenient for mass transportation and carrying in the elevator; or it is built in the room, and is conveniently placed in the car _ Li box, which is the favorite of folding bicycles. . φ In order for the folding bicycle to be folded into a minimum volume, it is usually necessary to turn the pedal crank to a predetermined position before folding, so that the front and rear wheels are closest to each other after folding to reduce the folded volume. If the user forgets to fold the bicycle before reversing the pedal crank, the pedal crank may be difficult to be reversed to the position because the transmission is distracted during folding; or the pedal crank of some vehicle types (such as the type of brake) Can not be reversed; these will affect the convenience and functionality of the folding bike at the time of folding. 5 M353891 Thus, how to design a structure that allows the pedal crank to rotate freely becomes the primary subject of this creation. [New content] The main purpose of the present invention is to solve the above problems and to provide a toothed disc structure in which the ring gear and the disc body can be relatively freely pivoted. For the purpose of the foregoing, the toothed disc structure of the present invention is composed of a disc body, a ring gear and a fixed component, and is provided with a pedal crank of the bicycle, and the disc body has a pivoting portion for the tooth. The rim is pivoted, the outer edge of the ring gear has a _ portion for coupling with a chain or a belt, and the disk body has a fixing hole to the eve, the ring gear is provided with at least one positioning hole corresponding to the fixing hole of the disk body and The fixing component is disposed in the boring hole and the positioning hole in a detachable manner. According to this, when the fixing member is worn in the fixing hole and the positioning hole, the disk body can be rotated synchronously with the ring gear; and the fixing member can be released to enable the ring gear and the disk. The body is relatively free to pivot. This makes it easy to fold the folding bike. The above and other purposes and advantages of this creation are not difficult to obtain in-depth understanding from the detailed description of 4 cases selected below. In the case of some of the parts, or the arrangement of the parts, the selected examples are allowed, and in this specification, the details are 6 M353891. Description, and shown in the drawings [Embodiment j Please refer to FIG. 1 to FIG. 4, m /, the first embodiment selected for the present creation, the composition is not. The three-dimensional sub-division of the w. U in the external map, Figure 2 is the creation of the drawing. m' Figure 3 is a combination of the state of use of the creation of the schematic section of the schematic diagram of the solid part. The address I: the disk system is composed of a disk body, a ring gear 2 and a fixing element 3 u ^. The disk body 1 is provided for combination with the corresponding one of the rotating elements 5 (the pedal crank) (as shown in Fig. 3). Shown), the ring gear 2 m portion 21 is intended to be coupled to a bicycle chain or toothed belt. The δ-Hui disk body 1 is composed of a first-plate body 11 and a second plate body U. The first-plate body U and the second plate body 12 are substantially similar in shape, and the outer (four) is smaller than the ring gear 2 The tooth portion 2 and the first plate body η and the second plate body 12 adjacent to each other have a first - a convex ring (1) and a second convex portion (2) 'the first and second convex rings (1), (2) The outer diameter of the outer diameter is slightly smaller than the inner diameter of the phase 2, so that the first and second plates η and 12 can be combined with the outer edges of the first and second convex rings (1) and 121. A pivoting portion 13 (see FIG. 3) is formed, and in practice, the splicing portion 13 and the ring gear 2 are loosely fitted. 4, the first and second plates π, 12 respectively at the first and second convex rings I 〗 〖, 丨] M353891 position is provided with a number (four) - a combined hole ιι2 and a number of second combined holes 122 and can be respectively The bolts 51 pass through the first and second coupling holes in, 22 贞 "on the rotating element 5 of the bicycle (such as the pedal crank), and the first and second plates 11 and 12 are combined to form the aforementioned toothed disk. In order to make the first and second plates 1 and 12 are combined into the #1 disk, there is a transferability between the first and second plates. The first plate body u protrudes toward the second plate body 12 by a plurality of tenons 113'. The second plate body 12 has a recess 123 corresponding to each of the protrusions m, so that the protrusions 113 and the recesses 123 can be mutually engaged with each other. The first plate body 11 has a first fixing hole 114, and the second plate body 12 also has a second fixing hole 124. The ring gear 2 is disposed corresponding to the first and the fixing holes 114 and 124. There are a plurality of positioning holes 22, such that the fixing member 3 is detachably disposed in the first and second fixing holes 114 124 and any positioning holes 22, so that the disk body 1 and the ring gear 2 combined and can rotate synchronously. In this embodiment, in order to facilitate the assembly and disassembly of the fixing component 3, the first plate body 11 is disposed adjacent to the first fixing hole 114, and the base body 4 has a through hole 41. The through hole 41 is provided for a fixing post 42 , and one end of the fixing post 42 has a thread 421 for locking in one of the screw holes 115 of the first plate body 11 and the other end has a large diameter portion 422 , and A spring 43 is disposed between the base body 4 and the large diameter portion 422, so that the base body 4 is abutted against the first plate body u by the spring 43 in a normal state, and 8 M353891 allows the seat body 4 is movable along the axial direction of the fixed column 42; or rotated about the fixed column 42' and the aforementioned fixing element 3 is compared with the base 4, in the embodiment, the fixing element 3 is A structural form of a lock, and having an external thread 31 for locking to the base 4. The slab body II has a sliding groove 116 corresponding to the fixing member 3, and the sliding groove m is extended by the fixing hole 114, and is in an arc shape which is rotated by the fixing column 42. The slot _ has an EJ slot 117 for the end of the fixing hole 114 so that the fixing member 3 can be slid or post-locked in the slot ι6. Since the seat body 4 is movably displaced along the axial direction of the fixing post 42, the cymbal element 3 is often threaded through the first solid bores 114, 124 and the locating holes 22 by the elastic force of the spring 43. The disc body j. can rotate synchronously with the ring gear 2, so that when the user steps on the rotating member 5 (for example, the pedal crank), the chain can be driven to drive. "When the folding bicycle is to be folded, 'whether or not the body has been folded,' the user can pull the fixing member 3 out of the first and second fixing holes 114, 124 by simply pulling the seat 4 outward. And the positioning hole 22, and then rotate the base 4' along the sliding groove 116 to allow the fixing component 3 to be inserted into the groove 1 to position the armor 2, the ring gear 2 can be freely rotated relative to the disk body 'Let the user turn the pedal crank to the predetermined position, the folding bicycle can be folded to the minimum volume. 9 M353891 箠λ,,: The toothed disc structure of the present invention can be set as in the above embodiment. In addition to the bicycle using the chain, it can also be used for self-driving with a toothed belt. When using the toothed belt, it is only necessary to change the toothing of the ring gear to the configuration of the toothed belt. In addition to the arrangement of the movable body as in the foregoing embodiment, the arrangement of the components may be omitted, and the mosquito element, which is like a pin, may be directly disposed in the unloadable side S. Fixed hole of disc body and ring gear In the hole, the effect of allowing the ring gear to pivot relative to the disk body can be achieved. In addition, the way of forming the pivoting portion is to provide first and second convex portions respectively on one of the adjacent faces of the first and second plates. In addition to the structure of the ring, a convex ring may be separately provided on the first plate body or the second plate body, and a pivotal portion is formed on the outer edge of the convex ring. The disclosure of the above embodiment is used to explain the present invention. Creation is not intended to limit the creation of this work, so any change in value or replacement of equivalent components should still be subject to the scope of this creation. From the above detailed description, it will be clear to those skilled in the art that the creation can indeed achieve the aforementioned objectives. It has already complied with the provisions of the Patent Law, and has filed a patent application. [Simple description of the diagram] M353891 Figure 1 is a three-dimensional appearance of the creation; Figure 2 is an exploded view of the creation; Figure 3 is a combination of the use of the creation Figure 4; and Figure 4 is a schematic diagram of the combination of the fixed component parts of the creation. [Main component symbol description]
盤體1 第一凸環111 凸部1 1 3 螺孔1 1 5 凹槽1 1 7 第二凸環1 2 1 凹部1 2 3 樞接部1 3 齒部2 1 固定元件3 座體4 固定柱4 2 大徑部4 2 2 轉動元件5 第一板體11 第一結合孔112 第一固定孔114 滑槽1 1 6 第二板體12 第二結合孔1 2 2 第二固定孔1 2 4 齒圈2 定位孔2 2 外螺紋3 1 穿孔4 1 蜾紋4 2 1 彈簧4 3 螺栓5 1Disk body 1 first convex ring 111 convex portion 1 1 3 screw hole 1 1 5 groove 1 1 7 second convex ring 1 2 1 concave portion 1 2 3 pivot portion 1 3 tooth portion 2 1 fixing member 3 seat body 4 fixed Column 4 2 Large diameter portion 4 2 2 Rotating element 5 First plate body 11 First coupling hole 112 First fixing hole 114 Chute 1 1 6 Second plate body 12 Second coupling hole 1 2 2 Second fixing hole 1 2 4 Ring gear 2 Positioning hole 2 2 External thread 3 1 Perforation 4 1 蜾 4 4 1 Spring 4 3 Bolt 5 1