M436627 五、新型說明： 【新型所屬之技術領域】 本創作係與自行車之避震裝置有關，更詳而言之，乃 特指一種設置於自行車架之座管及後上叉間，用以吸收車 架所受衝擊力量。 【先前技術】 習知之自行車後避震器設計，如中華民國專利第Μ 270986號所示，其係包括一可伸縮改變長度的避震桿以及 一彈簧，其中該避震桿包括一軸管及連接於軸管一端並可 相對伸縮移動之軸桿部，該彈簧係為斷面圓形之彈性鋼線 作相等外徑螺旋環繞之直筒狀型體，並套設於該可伸縮之 避震桿上，藉此，使該後避震器可裝設於自行車上，連接 於其前後段車架間，而能提供自行車於不平路面行駛時， 利用該可伸縮避震桿及彈簧的緩衝釋壓之作用，達到減震 之目的。 然而，此種習知之避震器係利用彈簧以進行緩衝釋 壓，但彈簧本身易有彈性疲乏之問題。再者，由於後震器 係設置於自行車架之座管及後上叉間，接近騎乘者之後方 位置，彈簧容易捲入衣物造成安全疑慮。再加上整體結構 所需體積大，不利於整體自行車結構之配置。 【新型内容】 綜合上開先前技術的缺點，大致上包括習知之避震器 彈簧本身易有彈性疲乏問題，且同時整體結構具有安全疑 3 M436627 慮、不利於整體配置之問題。而鑑於解決上述缺點，本案 提出一種自行車後避震裝置的方案，該方案具有安全、耐 用性佳及體積小等優點。 本創作係為一種自行車後避震裝置，其包含有： 一避震軸桿，其具有一連接於自行車架之連接端，及 一抵頂端； 一避震筒，其内部具有一容置空間，該避震軸桿之抵 頂端係可活動穿入避震筒内；其中，該避震筒之另一端係鲁 可供連接於自行車架處；以及 一設於該避震筒内之彈性體，其係設於該抵頂端與避 -震筒間。M436627 V. New description: [New technical field] The creation department is related to the shock absorber of bicycle. More specifically, it is specifically arranged between the seat tube and the rear upper fork of the bicycle frame for absorption. The impact of the frame is affected. [Prior Art] A conventional bicycle rear shock absorber design, as shown in the Republic of China Patent No. 270986, includes a retractable length-changing suspension rod and a spring, wherein the suspension rod includes a shaft tube and a connection a shaft portion which is movable at one end of the shaft tube and which is relatively telescopically movable. The spring is a straight cylindrical body of a circular steel wire having a circular outer circumference and is sleeved on the telescopic shock absorber. Therefore, the rear shock absorber can be installed on the bicycle and connected between the front and rear frame frames, and can provide the buffer release pressure of the retractable shock absorber rod and the spring when the bicycle is driven on uneven road surface. Function, to achieve the purpose of shock absorption. However, such a conventional shock absorber utilizes a spring for buffer relief, but the spring itself is susceptible to elastic fatigue. Furthermore, since the rear shock absorber is disposed between the seat tube of the bicycle frame and the rear upper fork, and close to the rear position of the rider, the spring is easily caught in the clothing and causes safety concerns. In addition, the overall structure requires a large volume, which is not conducive to the configuration of the overall bicycle structure. [New content] Comprehensively, the shortcomings of the prior art, including the conventional shock absorber spring itself, are prone to elastic fatigue problems, and at the same time, the overall structure has safety concerns, which is not conducive to the overall configuration. In view of the above shortcomings, the present invention proposes a bicycle rear suspension device, which has the advantages of safety, good durability and small size. The present invention is a bicycle rear suspension device, comprising: a suspension shaft having a connecting end connected to the bicycle frame and an abutting top; a shock absorber having an accommodation space therein; The abutting shaft of the suspension shaft can be movably inserted into the shock absorber; wherein the other end of the shock absorber is detachably connected to the bicycle frame; and an elastic body disposed in the shock absorber It is disposed between the abutting end and the evasing cylinder.
本創作之主要目的在於：該彈性體可於自行車架受到 外力衝擊（如地面顛駚跳動時），產生彈性擠壓變形，藉以 吸收、分散自行車架所受力量，防止自行車架產生金屬疲 勞或變形等問題。 I 本創作之次要目的在於：該避震筒係圍設於彈性體外 周圍，可提供彈性體之變形拘束力量，避免因衝擊力量過 大，導致彈性體永久變形或損壞。 【實施方式】 為便於說明本案於上述新型内容一欄中所表示的中心 思想，茲以具體實施例表達。實施例中各種不同物件係按 適於例舉說明之比例，而非按實際元件的比例予以繪製， 合先敘明。 M436627 如第一圖〜第五圖圖面所示，本創作係為一種自行車後 避震裝置，其係可供設置於一自行車架ίο之座管η及 後上叉12間，其包含有： 一避震軸桿20 ，其具有一連接於自行車架10之連 接端21，及一抵頂端22 ;該避震軸桿20之連接端21 係連接於自行車架10之座管11處，例如：該連接端21 處係設有一穿孔211 ，以供一螺鎖元件212穿設並固定 $ 於座管11側邊處。 一避震筒30 ，内部具有一容置空間，其兩端分別為 一開放端31及一封閉端32 ，該開放端31處設有一蓋 體33 ，該蓋體33中央穿設有一軸孔34 ，以供該避震 軸桿20之抵頂端22可活動穿入避震筒30内，並使該 避震軸桿20可於轴孔34處往復滑移，且該蓋體33轴 孔34與避震轴桿20間係設有一墊圈331 ，以減少轴 子L 34與避震轴桿20之間隙，並使避震軸桿20滑動更 φ 為順暢；其中，該避震筒30之封閉端32係連接於自行 車架10之後上叉12處。例如，該後上叉12處係設有 一嵌合座121 ，以供該封閉端32可嵌固於其内。以及 一設於該避震筒30内之彈性體40 ，其係設於該抵 頂端22與封閉端32間，其中，該彈性體40係可為一 由PU彈性塑膠所製成之彈性柱或彈簧至少其中之一。 明瞭上述本案詳細結構後，以下係針對本案之動作原 理逐一詳細說明： 如第五圖〜第六圖所示，當自行車架10受到外力衝擊 5 M436627 時，例如由後輪行跌於顛頗路面所受之反作用力，該座管 11及後上叉12間係產生相對壓縮之力量。因此，該避震 軸桿20之抵頂端22係受力往避震筒30内深入。而該 彈性體40受到抵頂端22之擠壓，則產生彈性變形以吸 收、緩衝自行車架10所受到之衝擊力量。The main purpose of the creation is that the elastic body can be elastically squeezed and deformed when the bicycle frame is subjected to an external force (such as when the ground is bumping), thereby absorbing and dispersing the force of the bicycle frame, and preventing metal fatigue or deformation of the bicycle frame. And other issues. I The second purpose of this creation is that the suspension cylinder is placed around the outer body of the elastic body to provide the deformation and restraining force of the elastic body, so as to avoid permanent deformation or damage of the elastic body due to excessive impact force. [Embodiment] For the convenience of explaining the central idea of the present invention in the column of the above novel content, it is expressed by a specific embodiment. The various items in the examples are drawn to scales as illustrated and not to the actual proportions of the elements. M436627 As shown in the first to fifth figures, the present invention is a bicycle rear suspension device, which can be disposed between a seat frame η and a rear upper fork 12 of a bicycle frame, and includes: A suspension shaft 20 having a connecting end 21 connected to the bicycle frame 10 and an abutting end 22; the connecting end 21 of the suspension shaft 20 is connected to the seat tube 11 of the bicycle frame 10, for example: A through hole 211 is defined in the connecting end 21 for a screwing member 212 to be passed through and fixed to the side of the seat tube 11. An inner casing has an accommodating space, and an open end 31 and a closed end 32 are respectively disposed at the two ends. The open end 31 is provided with a cover 33. The cover 33 is provided with a shaft hole 34 in the center. The abutting end 22 of the suspension shaft 20 is movably inserted into the shock absorber 30, and the suspension shaft 20 is reciprocally slidable at the shaft hole 34, and the cover 33 has a shaft hole 34 and A washer 331 is disposed between the suspension shafts 20 to reduce the gap between the shaft L 34 and the suspension shaft 20, and to make the suspension shaft 20 slide more smoothly; wherein the closed end of the suspension cylinder 30 The 32 series is attached to the upper fork 12 after the bicycle frame 10. For example, the rear upper fork 12 is provided with a fitting seat 121 for the closed end 32 to be fitted therein. And the elastic body 40 disposed in the shock absorber 30 is disposed between the abutting end 22 and the closed end 32. The elastic body 40 can be an elastic column made of PU elastic plastic or At least one of the springs. After clarifying the detailed structure of the above case, the following is a detailed description of the operation principle of the present case: As shown in the fifth to sixth figures, when the bicycle frame 10 is subjected to an external force impact of 5 M436627, for example, the rear wheel row falls on the upside road surface. The reaction force is subjected to a relative compression force between the seat tube 11 and the rear upper fork 12. Therefore, the abutting end 22 of the suspension shaft 20 is forced into the shock absorber 30. When the elastic body 40 is pressed by the abutting end 22, elastic deformation is generated to absorb and buffer the impact force received by the bicycle frame 10.
再者，該避震筒30係圍設於彈性體40外周圍，可 提供彈性體40之變形拘束力量。藉此，彈性體40隨著 所受衝擊力量增加，會逐漸彈性變形填滿避震筒30内之 空隙。當衝擊力量再增大時，則可由避震筒30筒壁協助 承受。避免因衝擊力量過大，導致彈性體40永久變形或 損壞。 如第七圖所示，其係為本創作之另一實施例，其中， 該封閉端32處係延伸設有一螺鎖座35 ，以便於以螺栓 等鎖設於後上叉12處。以便適用於其他不同形式之自行 車架10 。 雖然本案是以一個最佳實施例做說明，但精於此技藝鲁 者能在不脫離本案精神與範疇下做各種不同形式的改變。 以上所舉實施例僅用以說明本案而已，非用以限制本案之 範圍。舉凡不違本案精神所從事的種種修改或變化，俱屬 本案申請專利範圍。 M436627 【圖式簡單說明】 第一圖係本創作之實施狀態示意圖。 第二圖係第一圖之局部放大示意圖。 第三圖係本創作之立體外觀示意圖。 第四圖係本創作之立體分解示意圖。 第五圖係第三圖之5 - 5剖面線暨箭頭方向剖面示意 圖。 第六圖係本創作之剖面動作示意圖。 第七圖係本創作另一實施例之平面示意圖。 【主要元件符號說明】 避震筒30 開放端31 封閉端32 蓋體33 墊圈331 轴孔34 螺鎖座35 彈性體40 自行車架10 座管11 後上叉12 嵌合座121 避震軸桿20 連接端21 穿孔211 螺鎖元件212 抵頂端22Further, the shock absorbing cylinder 30 is disposed around the outer periphery of the elastic body 40 to provide the deformation restraining force of the elastic body 40. Thereby, the elastic body 40 gradually elastically deforms to fill the gap in the shock absorbing cylinder 30 as the impact force increases. When the impact force is increased again, it can be assisted by the wall of the shock absorber 30. Avoid excessive deformation or damage to the elastomer 40 due to excessive impact forces. As shown in the seventh figure, it is another embodiment of the present invention, wherein the closed end 32 is extended with a screw lock seat 35 for locking to the rear upper fork 12 by bolts or the like. In order to adapt to other different forms of the self-supporting frame 10 . Although the case is illustrated by a preferred embodiment, it is true that those skilled in the art can make various changes in form without departing from the spirit and scope of the case. The above embodiments are only used to illustrate the present case and are not intended to limit the scope of the present invention. All kinds of modifications or changes that are not in violation of the spirit of the case are the scope of patent application in this case. M436627 [Simple description of the diagram] The first diagram is a schematic diagram of the implementation status of this creation. The second figure is a partially enlarged schematic view of the first figure. The third picture is a three-dimensional appearance of the creation. The fourth picture is a three-dimensional exploded view of the creation. The fifth figure is a schematic diagram of the 5 - 5 section line and arrow direction section of the third figure. The sixth picture is a schematic diagram of the cross-section action of this creation. The seventh drawing is a schematic plan view of another embodiment of the present creation. [Main component symbol description] Shock absorber 30 Open end 31 Closed end 32 Cover body 33 Washer 331 Shaft hole 34 Screw lock seat 35 Elastomer 40 Bicycle frame 10 Seat tube 11 Rear upper fork 12 Mounting seat 121 Shock absorber shaft 20 Connecting end 21 perforation 211 screwing element 212 abutting tip 22