200944262 九、發明說明 【發明所屬之技術領域】 本發明有關一橢圓形訓練器’且更特別有關一用於橢 圓形訓練器而較佳地是設有可調整之步幅長度的踏板單元 【先前技術】 0 —橢圓形訓練器係一固定不動之運動機，被用於模擬 步行或跑步，而不會對關節造成過度之壓力，因此由於該 使用者之腳在該運動期間保持與該等踏板接觸的事實，減 少碰撞傷害之風險。此一機器大致上包括固持一驅動單元 之基座，該驅動單元包括一任何習知型式之阻力輪，且藉 由該使用者經過二曲柄機件所驅動，主要藉由以他/她的 腳在作用如桿棒之實質上水平的往復式棒條上推動，該往 復式棒條在與該阻力輪一體的曲柄及導引/支撐構件之間 e 樞轉。於具有前阻力輪的橢圓形訓練器之案例中，每—棒 條之後方端部通常被一沿著該基座中所形成之軌道往復運 動的滑動裝置或滾輪單元所導引及支撐。 再者，二實質上直立之把手-槓桿係大致上樞轉地連 接至該基座上之一支柱，且每一槓桿係亦在其底部樞轉地 連接至該有關之往復式棒條，在一後輪訓練器之案例中， 在該棒條之前端直接連接，或在前輪訓練器之案例中，經 過一實質上平行於該棒條之連桿間接地連接。 該訓練器之步幅長度被該曲柄長度所界定，於該最簡 -4 - 200944262 單之型號中，該步幅長度係固定在一被選擇適合大部份使 用者之平均値。更複雜之型號提供一曲柄長度、亦即步幅 長度調整機構，以便使該訓練器順應任何高度之使用者， 且允許該使用者施行最合適之運動。 不管訓練器之特定型式，該等踏板於該運動期間多少 不滿足該使用者之人體工學需求地被安裝在該等棒條上。 其實，藉由在一固定式傾斜度直接將該等踏板鎖固至該等 H 棒條上、或藉由在該等棒條及亦可能在該連桿上樞轉它們 ，該等踏板可爲與該等棒條一體成形。 更特別地是，於固定式安裝之案例中，其充分清楚的 是該踏板之傾斜度係藉由其所鎖固之棒條的傾斜度而決定 ，由此該使用者之腳踝遍及該運動週期亦被迫順應於該變 化之棒條角度。此連續之適應性壓迫該關節，且如果所需 之腳踝角度係超出或接近該使用者之能力的極限，可甚至 造成該使用者之不平衡。 〇 如果該踏板係僅只在該棒條上經過單一樞軸樞轉，這 是甚至比該固定式踏板更糟。其實，該使用者必需在可自 由地向後與向前傾斜之踏板上持續地努力保持平衡，且這 造成極難以施行一正確之運動。 一改善之樞轉式安裝係藉由不只在該棒條上、同樣也 在該連桿上樞轉該踏板所達成。這樣一來，該踏板能傾斜 ’以致該使用者不會被迫順著該棒條之傾斜度，又該傾斜 範圍係受限制，且平衡係不成問題。然而，此配置係亦有 缺點’特別是在一可調整之步幅訓練器的案例中。 -5- 200944262 其實，支撐該踏板之連桿主要係意欲將該等水平棒條 之往復式運動耦接至該等把手-槓桿的往復式運動，以便 達成該使用者之腿部及手臂的同步化作用。因此，該踏板 之結果的傾斜範圍係未基於人體工學考量，但係該等上面 論及構件間之硬式連接的普通結果。再者，如果該步幅長 度係藉由改變該曲柄長度所調整，即爲應調整將暗指複雜 結構及漫長調整之連桿及/或把手-槓桿長度、或該踏板 φ 傾斜範圍由於該步幅調整之結果而改變的其中之一。 【發明內容】 本發明係意欲藉由提供一踏板單元克服該等缺點，其 中一踏板具有樞轉地連接至該有關之往復式棒條的第一端 部、及樞轉地連接至一鉸接式槓桿系統的第二端部，該槓 桿系統與該往復式棒條的一端部連接，且設有適於沿著該 軌道隨同該棒條往復運動之支撐機構。 ❹ 【實施方式】 0考圖1及2，在此看見本發明之橢圓形訓練器的結 構（該殻體已爲了清楚之故被移除）包括一具有水平機架 12之基座10’並設有—由該水平機架12之第一端部延伸 的直立支柱11、與一連接至該水平機架12之第二端部的 導件單元1 3。 二把手—槓桿15係樞轉地連接至該支柱11，且一皮 帶14將二把手—槓桿連接至—位在下方之驅動單元2〇, -6- 200944262 該驅動單元亦連接至該支柱11。該驅動單元20在每一側 面包括一阻力輪21，其可爲任何習知之阻力輪，並藉由 該使用者經過一配置在阻力輪2 1及該導件單元1 3間之曲 柄機件所驅動。 該曲柄機件包括與阻力輪21 —體之曲柄30，及一具 有樞轉至曲柄30的前端與一藉由該導件單元13所導引之 後方端部3 4的往復式棒條3 1。該往復式棒條3 1承載一 @ 踏板單元，該踏板單元包括一踏板3 2，該踏板具有第一 端部和第二端部；該第一端部樞轉地連接至一由棒條直立 地延伸的連接零件3 3 ;該第二端部樞轉地連接至一鉸接 式槓桿系統，該槓桿系統與該往復式棒條31之後方端部 34連接，且設有適於沿著一形成於該導件單元13中之軌 道往復運動的支撐機構。 更特別地是，該支撐機構包括一滾輪單元40，該滾 輪單元在該往復式棒條31之後方部份中設有第一對滾輪 〇 41及第二對滾輪42，兩對滾輪41,42係與該導件單元13 可運動地嚙合。雖然該第二對滾輪42係安裝在該往復式 棒條31之後方端部34上，該第一對滾輪41被安裝在一 L形可傾斜支撐桿51之角落，該支撐桿伸過一形成於該 往復式棒條31中之凹槽35» 該支撐桿5 1係一 L形桿，並設有一與該踏板3 2的第 二端部樞轉地連接之長支臂511、及一與連桿43樞轉地 連接之短支臂512，該連桿係依序與該往復式棒條31之 後方端部34樞轉地連接。此鉸接式槓桿系統如此將踏板 200944262 32之第二端部連接至該後方端部34，且該支撐槓桿51之 傾斜導致環繞該連接零件3 3之樞軸的踏板3 2之向上或往 下傾斜。 圖3之圖解顯示如何設計該長支臂511之長度，以當 曲柄30之長度R係最大時，提供踏板32之最大可能的向 前傾斜角度A，亦即設定該最長之步幅。 於藉由沿著該曲柄3 0的調整行程C徑向地朝內運動 〇 該往復式棒條31之前端樞軸而減少該步幅時，該踏板角 度A將被對應地減少至順應該新的步幅長度，以便將該 使用者之腳踝角度維持在人體工學上正確之範圍內。 在該右往復式棒條之往復式運動中，於該右往復式棒 條3 1係在該最高點的圖3之位置與該右往復式棒條3 1係 在該最低點的圖4及5之位置間之比較，清楚地顯示該L 形支撐桿51之傾斜運動，這導致踏板32之前端的一對應 向上移動，如此減少該腳踝角度，以便保持在人體工學與 〇 解剖學安全之範圍內。 雖然吾人已按照本發明顯示及敘述該具體實施例，對 於那些熟諳此技藝者應清楚的是可作成進一步具體實施例 ’而不會由本發明之範圍脫離，如由所附申請專利範圍所 界定者。 譬如’其充分清楚的是相同型式之踏板單元亦可被應 用於一後輪橢圓形訓練器，甚至沒有步幅調整，且該曲柄 長度調整以及該等把手-槓桿15與該等往復式棒條31之 同步性可經由任何合適之機件達成。 -8- 200944262 【圖式簡單說明】 當結合有關聯之附圖時，本發明將由以下之敘述變得 更明顯’僅只用於說明之目的，該等附圖顯示一按照本發 明之較佳具體實施例。 圖1係一透視圖，顯示本發明之橢圓形訓練器； 圖2係一放大分解圖’顯示該踏板單元及其如何被安 φ 裝在該往復式棒條上； 圖3係一側視圖’顯示該踏板之傾斜角度及該步幅調 整間之關係； 圖4係一側視圖’顯示—操作本發明之橢圓形訓練器 的使用者；及 圖5係一側視圖，顯示被向上傾斜之踏板的詳細。 【主要元件符號說明】 φ 10 :基座 11 :支柱 12 :機架 1 3 :導件單元 14 :皮帶 1 5 :把手—槓桿 2 0 :驅動單元 2 1 :阻力輪 3 0 :曲柄 -9- 200944262 3 1 :棒條 3 2 :踏板 3 3 :連接零件 3 4 :後方端部 35 :凹槽 40 :滾輪單元 4 1 :滾輪 42 :滾輪 43 :連桿 5 1 :支撐桿 5 1 1 :長支臂 5 12 :短支臂BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an elliptical trainer' and more particularly to a pedal unit for an elliptical trainer, preferably with an adjustable stride length. Technology] 0—Oval trainer is a stationary motion machine that is used to simulate walking or running without excessive stress on the joint, so the foot of the user remains with the pedals during the movement. The fact of contact reduces the risk of collision damage. The machine generally includes a base for holding a drive unit, the drive unit including a conventionally-type resisting wheel, and driven by the user via a two-handle mechanism, primarily by his/her feet Pushed on a substantially horizontal reciprocating rod acting as a rod, the reciprocating rod pivots between the crank and the guiding/supporting member integral with the resistance wheel. In the case of an elliptical trainer having a front resistance wheel, the rear end of each bar is typically guided and supported by a slide or roller unit that reciprocates along a track formed in the base. Furthermore, two substantially upright handle-lever linkages are pivotally coupled to one of the posts on the base, and each lever is also pivotally coupled at its bottom to the associated reciprocating bar, In the case of a rear wheel trainer, the front end of the rod is directly connected, or in the case of a front wheel trainer, indirectly connected through a link substantially parallel to the rod. The length of the stride of the trainer is defined by the length of the crank. In the model of the simplest -4 - 200944262 single, the stride length is fixed at an average 被 selected to suit most of the users. More complex models provide a crank length, i.e., stride length adjustment mechanism, to allow the trainer to conform to any height user and allow the user to perform the most appropriate motion. Regardless of the particular version of the exerciser, the pedals are mounted on the bars during the exercise that do not meet the ergonomic requirements of the user. In fact, by directly locking the pedals to the H bars at a fixed inclination, or by pivoting them on the bars and possibly also on the links, the pedals can be Formed integrally with the rods. More particularly, in the case of a fixed installation, it is sufficiently clear that the inclination of the pedal is determined by the inclination of the rod to which it is locked, whereby the user's ankle extends throughout the movement cycle. It is also forced to adapt to the bar of this change. This continuous adaptation oppresses the joint and can even cause an imbalance in the user if the desired ankle angle is above or near the limit of the user's ability. 〇 If the pedal is only pivoted on the bar by a single pivot, it is even worse than the fixed pedal. In fact, the user must continually strive to maintain balance on the pedal that is free to tilt backwards and forwards, and this makes it extremely difficult to perform a correct motion. An improved pivotal mounting is achieved by pivoting the pedal not only on the bar but also on the link. In this way, the pedal can be tilted so that the user is not forced to follow the inclination of the bar, and the range of inclination is limited, and the balance is not a problem. However, this configuration also has disadvantages, especially in the case of an adjustable stride trainer. -5- 200944262 In fact, the link supporting the pedal is mainly intended to couple the reciprocating motion of the horizontal bars to the reciprocating motion of the handle-lever to achieve synchronization of the user's legs and arms Chemical effect. Therefore, the slope of the result of the pedal is not based on ergonomic considerations, but is a general result of the hard connection between the components. Furthermore, if the stride length is adjusted by changing the length of the crank, it is adjusted that the complex structure and the long adjustment of the link and/or the handle-lever length, or the pedal φ tilt range should be adjusted due to the step One of the changes in the result of the adjustment. SUMMARY OF THE INVENTION The present invention is intended to overcome such disadvantages by providing a pedal unit having a first end that is pivotally coupled to the associated reciprocating bar and pivotally coupled to an articulated A second end of the lever system, the lever system being coupled to one end of the reciprocating rod and having a support mechanism adapted to reciprocate along the track along with the rod.实施 [Embodiment] 0 Referring to Figures 1 and 2, the structure of the elliptical trainer of the present invention (which has been removed for clarity) is seen herein to include a base 10' having a horizontal frame 12 and An upright post 11 extending from a first end of the horizontal frame 12 and a guide unit 13 connected to a second end of the horizontal frame 12 are provided. The two-handle-lever 15 is pivotally coupled to the post 11 and a strap 14 connects the two-handle-lever to the lower drive unit 2〇, -6- 200944262. The drive unit is also coupled to the post 11. The drive unit 20 includes a resistance wheel 21 on each side, which can be any conventional resistance wheel, and is passed by the user through a crank mechanism disposed between the resistance wheel 21 and the guide unit 13 drive. The crank mechanism includes a crank 30 that is integral with the resistance wheel 21, and a reciprocating bar 3 1 having a front end pivoted to the crank 30 and a rear end portion 34 guided by the guide unit 13. . The reciprocating bar 3 1 carries a @ pedal unit, the pedal unit including a pedal 3 2 having a first end and a second end; the first end is pivotally connected to a stand upright a ground extending connecting part 3 3 ; the second end is pivotally connected to an articulated lever system, the lever system is coupled to the rear end portion 34 of the reciprocating bar 31 and is configured to be formed along one A support mechanism for reciprocating the track in the guide unit 13. More specifically, the support mechanism includes a roller unit 40. The roller unit is provided with a first pair of roller rollers 41 and a second pair of rollers 42 in the rear portion of the reciprocating bar 31, and two pairs of rollers 41, 42. It is movably engaged with the guide unit 13. Although the second pair of rollers 42 are mounted on the rear end portion 34 of the reciprocating rod 31, the first pair of rollers 41 are mounted at a corner of an L-shaped tiltable support rod 51, and the support rod extends over The groove 35» in the reciprocating rod 31 is an L-shaped rod, and is provided with a long arm 511 pivotally connected to the second end of the pedal 32, and a pair The link 43 is pivotally coupled to the short arm 512 which is in pivotal connection with the rear end portion 34 of the reciprocating bar 31. The articulated lever system thus connects the second end of the pedal 200944262 32 to the rear end 34, and the inclination of the support lever 51 causes the pedal 3 2 surrounding the pivot of the connecting member 33 to tilt up or down . The illustration of Figure 3 shows how the length of the long arm 511 is designed to provide the maximum possible forward tilt angle A of the pedal 32 when the length R of the crank 30 is maximum, i.e., set the longest step. When the stride is reduced by radially moving inwardly along the adjustment stroke C of the crank 30 to the front end pivot of the reciprocating rod 31, the pedal angle A will be correspondingly reduced to a new one. The stride length is such that the user's ankle angle is maintained within an ergonomically correct range. In the reciprocating motion of the right reciprocating bar, the right reciprocating bar 3 1 is at the position of the highest point of FIG. 3 and the right reciprocating bar 3 1 is at the lowest point of FIG. 4 and The comparison between the positions of 5 clearly shows the tilting movement of the L-shaped support bar 51, which results in a corresponding upward movement of the front end of the pedal 32, thus reducing the ankle angle so as to maintain the ergonomic and anatomical safety range. Inside. Although the present invention has been shown and described with respect to the embodiments of the present invention, it will be apparent to those skilled in the art . For example, it is sufficiently clear that the same type of pedal unit can also be applied to a rear wheel elliptical trainer, even without stride adjustment, and the crank length adjustment and the handle-lever 15 and the reciprocating rods Synchronization of 31 can be achieved via any suitable mechanism. -8- 200944262 [Brief Description of the Drawings] The present invention will become more apparent from the following description in conjunction with the accompanying drawings, which are only for the purpose of illustration only. Example. Figure 1 is a perspective view showing the elliptical trainer of the present invention; Figure 2 is an enlarged exploded view showing the pedal unit and how it is mounted on the reciprocating bar; Figure 3 is a side view The relationship between the tilt angle of the pedal and the step adjustment is shown; FIG. 4 is a side view 'showing-operating the user of the elliptical trainer of the present invention; and FIG. 5 is a side view showing the pedal tilted upward The details. [Description of main component symbols] φ 10 : Base 11 : Pillar 12 : Rack 1 3 : Guide unit 14 : Belt 1 5 : Handle - Lever 2 0 : Drive unit 2 1 : Resistance wheel 3 0 : Crank-9- 200944262 3 1 : Bar 3 2 : Pedal 3 3 : Connecting part 3 4 : Rear end 35 : Groove 40 : Roller unit 4 1 : Roller 42 : Roller 43 : Connecting rod 5 1 : Supporting rod 5 1 1 : Long Arm 5 12 : short arm
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