TWI694850B - 增強耐用度的線性致動器 - Google Patents
增強耐用度的線性致動器 Download PDFInfo
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- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
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Abstract
線性致動器包括馬達、桿、及殼體。桿具有一縱向軸,且桿可藉由馬達而沿著縱向軸移動。殼體支撐馬達及桿,具有錐形輥軸承,設於至少一部分的桿與一部分的殼體之間。
Description
本案一般關於線性致動器。更具體地,本案一般關於用於改變另一平台的傾斜的線性致動器。
傳統的線性致動器包括由推力軸承支撐的可移動桿。當軸向另一物體施加力時,止推軸承支撐桿抵抗軸向載荷。具有由梯形螺桿驅動的桿的線性致動器具有旋轉推力軸承,其允許在桿於一軸向壓力下時使梯形螺桿旋轉。
側向負載,或在垂直於桿的縱向軸的方向上施加力,會導致推力軸承過早失效。在具有梯形螺桿驅動桿的線性致動器中,推力軸承的失效會導致梯形螺桿失效,及線性致動器卡住。
運動系統,諸如跑步機、橢圓機、及運動自行車,係使用線性致動器來調節系統的傾斜或下傾,以對使用者提供不同的運動體驗。由於使用者希望更多樣性的運動程序及運動系統,以在越來越大的移動範圍經歷更頻繁的調整,線性致動器在桿上係暴露於更大量的側向負載。
在一些實施例中,線性致動器包括一馬達、一桿、及一殼體。桿具有一縱向軸,並且桿可透過馬達沿該縱向軸移動。殼體支撐馬達及桿,以及一錐形輥軸承係設於桿的至少一部分及殼體的一部分之間。
在一些實施例中,運動系統包括一底座、可移動地連接到底座的一框架、以及定位在至少一部分的底座與至少一部分的框架之間的一線性致動器,以向框架施加力並相對於基座而移動框架。線性致動器包括馬達、桿、及殼體。桿具有一縱向軸,並且桿可透過馬達沿該縱向軸移動。殼體支撐馬達及桿,以及一錐形輥軸承係設於至少一部分的桿與一部分的殼體之間。
在一些實施例中,一種支撐線性致動器的桿的方法包括步驟:以線性致動器的桿接收徑向力,將徑向力傳遞到梯形螺桿,以及利用梯形螺桿對錐形輥軸承施加一扭矩。
提供本發明內容是為了以簡化的形式介紹一些概念,這些概念將在以下的具體實施方式中進一步描述。本發明內容不是用以標識所要求保護的發明標的的關鍵特徵或必要特徵,也不是在用於幫助決定所要求保護的發明標的的範圍。
附加的特徵及優點將在以下的描述中闡述,並且部分地將從說明書中為顯而易見的,或者可以透過本案的教示而獲知。藉由所附申請專利範圍中特別指出的儀器及組合,可以實現並獲得本發明的特徵及優點。根據以下描述與所附申請專利範圍,本發明的特徵將變得更加明顯,或者可以透過如下所述的本發明的實踐而獲知。
在根據本發明的線性致動器的一些實施例中,致動器可包括支撐該桿的一錐形輥軸承,以強化該桿以防止側向負載。例如,傳統的線性致動器具有定位在桿的基座處的一襯套,以支撐該桿抵抗施加到該桿的軸向負載。該襯套或其他軸向軸承可提供軸向支撐,但是當該線性致動器暴露於施加到桿的側向力時,該襯套或其他軸向軸承可能會過早磨損。
圖1是根據本案的線性致動器100的立體圖。線性致動器100包括馬達102,馬達102配置成使桿104沿桿104的縱向軸106而軸向移動。馬達102藉由殼體108及套筒110連接到桿104。殼體108可包含一或多個齒輪、皮帶、纜索、或其他扭矩傳遞裝置,以將扭矩從馬達102傳遞到套筒110中的一梯形螺桿。梯形螺桿可以與桿104上的互補表面特徵相互作用,使得在梯形螺桿旋轉時,桿104在縱向軸106的方向上移動。
圖2顯示了包括圖1的線性致動器100的運動系統112。運動系統112可包括基座114及框架116,基座114及框架116可移動地彼此連接。線性致動器100可以在任何方向上定向,以透過一機械連結推動、拉動、或對框架116施加一力。基座114及框架116可繞鉸鏈118而可樞轉地彼此連接。在一些實施例中,線性致動器100可定位在至少一部分的基座114與一部分的框架116之間,以在基座114及框架116之間施加一力,以改變框架116的相對於基座114的傾斜(或下傾)。在一些實施例中,基座114及框架116可具有0°、-5°、-10°、-15°的移動範圍的下限值或更小的值,並且基座114及框架116的移動範圍的上限值可為5°、10°、15°、20°、25°或更大的值。例如,基座114及框架116可具有至少0°至5°的移動範圍。在其他示例中,基座114及框架116可具有至少-5°至15°的移動範圍。又在其他示例中,基座114及框架116可具有至少-10°至20°的移動範圍。還在其他示例中,基座114及框架116可具有至少-15°至25°的移動範圍。在另外的示例中,基座114及框架116可以具有至少-20°至25°的移動範圍。
在一些實施例中,運動系統112可包括一或多個運算裝置120或其他界面,使用者可通過其與運動系統112互動。運算裝置120係與線性致動器100通訊。例如,運算裝置120可以允許使用者透過運算裝置120手動選擇傾斜度或下傾度的值,來控制框架116相對於基座114的移動。在其他示例中,運算裝置120可以包含儲存在其上的一或多個運動程序,其包括框架116相對於其中的基座114的一或多個傾斜度或下傾度的值。運動程序可以使運算裝置120與線性致動器100通訊,以相對於基座114移動框架116並改變框架116的傾斜或下傾,以為使用者提供各種運動體驗。
在一些實施例中,運算裝置120可存取具有所選的使用者所專用的運動程序的使用者設定檔或與其通訊。可與本案所述的原理相容的使用者設定檔的資料庫的示例,包括透過www.ifit.com可連結的iFit程式,並且由美商ICON Health and Fitness公司管理(位於美國猶他州洛根市)。在一些示例中,透過使用者設定檔可存取的使用者資訊包括使用者的年齡、性別、身體組成、身高、體重、健康狀況、其他類型的資訊或其組合,其可有助於決定使用者的適當運動程序。這樣的使用者設定檔資訊可透過iFit程式而於運算裝置120上取得。
圖3-1顯示了根據本案的線性致動器200的實施例的側剖視圖。線性致動器200包括馬達202,馬達202配置成利用梯形螺桿222沿著縱向軸206移動桿204。梯形螺桿222可與在梯形螺桿222與桿204之間的互補界面224相互作用,使得當梯形螺桿222繞縱向軸206旋轉時,具螺紋的互補界面224沿著縱向軸206及相對於套筒210而軸向地推動該桿。儘管互補界面224顯示為與桿204形成一體,但在其他實施例中,互補界面224可設置於相對於桿204而軸向固定的一螺帽或其他中間部件上。梯形螺桿222係由位於由馬達202驅動的殼體208內的一齒輪226的連結所驅動。在其他實施例中,從馬達202到梯形螺桿222的連結可包括皮帶、鏈條、凸輪、槓桿、或用以將扭矩從馬達202傳遞到梯形螺桿222的其他機構。
梯形螺桿222防止線性致動器200的在使用期間的反向驅動。尤其,一運動系統,如關於圖2所述的運動系統112,其在使用過程中可能會經歷反覆衝擊,可能會反向驅動滾珠螺桿。
在一些實施例中,例如關於圖2所述的運動系統112,桿204會受到在垂直於縱向軸206的徑向方向上施加的一力228。透過力228施加到桿204的扭矩,會傳遞到梯形螺桿222,並且傳遞到梯形螺桿222與殼體208及/或齒輪226的連結上。例如,力228可能來自在運動系統(例如在圖2的框架116上)上的在跑步機上跑步的使用者的側向衝擊。在其他示例中,當運動系統被定位成具有傾斜或下傾時,可由使用者的重量及/或擱置在線性致動器200上的框架所施加的向下力的而產生力228。
線性致動器200包括位於桿204與殼體208之間的一錐形輥軸承230。在一些實施例中,錐形輥軸承230可定位在至少一部分的梯形螺桿222與殼體208之間。例如,錐形輥軸承230可以定位在梯形螺桿222的肩部232與殼體208之間。徑向力228及/或桿204上的軸向力可以傳遞到梯形螺桿222與錐形輥軸承230上。錐形輥軸承230包括內圈231、外圈235、及位於內圈231與外圈235之間的複數個輥233。
在一些實施例中,錐形輥軸承230可以在縱向軸206與錐形輥軸承230的軸承軸線236之間具有一方位角234。方位角234可以在具有一上限值、一下限值、或在包括5°、10°、15°、20°、25°、30°、35°、40°、45°中的任何一個或其間的任何值的一上限值與一下限值的範圍內。在一些示例中,方位角234可以大於5°。在其他示例中,方位角234可以小於45°。又在其他示例中,方位角234可以在5°及45°之間。在其他示例中,方位角234可以在5°及30°之間。還在其他示例中,方位角234可為大約10°。透過將錐形輥軸承230經定向以相對於梯形螺桿222上的軸向力接收更大的徑向力228,或相對於徑向力228接收更大的軸向力,錐形輥軸承230的方位角234會影響線性致動器200的操作壽命。
線性致動器200可包括一第二軸承,該第二軸承相對於桿204縱向地設置在錐形輥軸承230之外。例如,圖3-1顯示了一輥滾珠軸承237,其位於梯形螺桿222的越過齒輪226的一末端。當桿206受到側向負載時,輥滾珠軸承237可以為梯形螺桿222提供額外的支撐。在其他示例中,錐形輥軸承230及輥滾珠軸承237可以互換,以輥滾珠軸承237鄰近梯形螺桿222的肩部232。
在一些實施例中,錐形輥軸承230能夠支撐具有一上限值、一下限值、或上限值及下限值的範圍內的軸向載荷,包括500磅、750磅、1000磅、1250磅、1500磅、1750磅、2000磅中的任一者,或其間的任何值。例如,至少500磅的軸向力(即,在縱向軸206的方向上)。在其他實施例中,錐形輥軸承230能夠支撐700磅到2000磅的軸向力。在其他實施例中,錐形輥軸承230能夠支撐1000磅到2000磅的軸向力。在其他實施例中,錐形輥軸承230能夠支撐1500磅到2000磅的軸向力。在其他實施例中,錐形輥軸承230能夠支撐大約2000磅的軸向力。
在一些實施例中,錐形輥軸承230的內徑239小於1.5英寸。在其他實施例中,錐形輥軸承230的內徑239小於1.25英寸。又在其他實施例中,錐形輥軸承230的內徑239小於1.0英寸。在進一步的實施例中,錐形輥軸承230的內徑239小於0.75英寸。尚在另外的實施例中,錐形輥軸承230的內徑239小於0.5英寸。
在一些實施例中,錐形輥軸承230在縱向方向(即,縱向軸206的方向)上具有小於1.0英寸的長度241。在其他實施例中,錐形輥軸承230的長度241小於0.9英寸。在其他實施例中,錐形輥軸承230的長度241小於0.8英寸。在進一步的實施例中,錐形輥軸承230的長度241小於0.7英寸。在更進一步的實施例中,錐形輥軸承230的長度241小於0.6英寸。在至少一個實施例中,錐形輥軸承230的長度241小於0.5英寸。
圖3-2顯示了根據本案的線性致動器300的另一實施例的側剖視圖。線性致動器300包括馬達302,馬達302配置成利用梯形螺桿322沿著縱向軸306而移動桿304。儘管可以關於錐形輥軸承來說明本案所述的線性致動器的實施例,但是在其他實施例中,線性致動器300包括定位在桿304與殼體308之間的角接觸輥軸承330。角接觸輥軸承330包括彎曲的內圈331、彎曲的外圈335、以及位於內圈331與外圈335之間的複數個滾珠軸承333。
在一些實施例中,角接觸輥軸承330可定位在至少一部分的梯形螺桿322與殼體308之間。例如,角接觸輥軸承330可以定位在梯形螺桿322的肩部332及殼體308之間。徑向力328及/或桿304上的軸向力可以傳遞到梯形螺桿322及角接觸輥軸承330。
圖4-1及4-2顯示了線性致動器200從圖4-1中的縮回狀態移動到圖4-2中的伸展狀態的示例,以及施加到桿204上的相關的徑向力228。圖4-1係位於垂直位置及縮回狀態的線性致動器200的側剖視圖。在運動系統的框架移動期間,線性致動器200可以施加軸向伸展力,以使一部分的框架從一部分的基座作進一步移動。在縮回狀態下,線性致動器200可使一部分的桿204位於梯形螺桿222的第一端238處或其附近。桿204的縱向軸206可以大致在重力方向上。例如,桿204可為大約垂直的。在這樣的實施例中,框架或運動系統的使用者的重量可以僅在縱向軸206的方向上施加一軸向力。
圖4-2顯示了處於伸展狀態的線性致動器200的示例。在具有在基座與框架之間的鉸接連接的運動系統中(例如關於圖2所描述的),當線性致動器200在縮回狀態及伸展狀態之間移動時,線性致動器200可改變方向。例如,當框架相對於基座增加傾斜度時,鉸接框架與基座的弧形移動,會使線性致動器200在定向上傾斜。換句話說,線性致動器200的縱向軸206可以與重力方向形成一非零角度。在一些實施例中,縱向軸206可以相對於重力定向在2°、5°、10°、15°、20°、25°、或30°方向。隨著朝重力的定向增加,徑向力228施加到桿204的潛勢會增加。
框架可以連接到桿204及/或施加一力至桿204的連接點240。向下的力242可以具有一徑向力228分量。向下的力242可包括框架的重力、使用者的重力、由使用者施加的任何向下的力(例如,在跑步機上跑步期間),或其組合。在一些實施例中,由於使用者施加到框架上的橫向力(例如,在跑步機上跑步期間),桿204可受到另外的徑向力228。此外,在如圖4-2所示的伸展狀態中,桿204可作為一伸展桿,增加透過徑向力228施加至梯形螺桿222的扭矩量。
傳統的線性致動器僅用於軸向應用。錐形輥軸承230可允許桿204及梯形螺桿222接收非軸向力(即,徑向力228),而不會使推力軸承或線性致動器的其他部件過早磨損。徑向力228可以向桿204及/或梯形螺桿222施加扭矩,該扭矩由錐形輥軸承230接收並且由錐形輥軸承230抵消,從而允許根據本案的線性致動器200的一或多個實施例能用於非軸向應用,而無需重新設計周遭的系統,無需使用不同類型的致動器,或不會使裝置過早失效,降低了線性執行器及/或使用線性執行器的系統的設計、製造、維護及維修成本。
根據本案的線性致動器的至少一個實施例,可以通過減小由線性致動器從伸展狀態移動到縮回狀態所產生的力,來進一步增加線性致動器的耐久度。例如,線性致動器可產生比縮回力更大的伸展力,以限制線性致動器產生的熱量,從而在高佔空比(duty cycle)(例如大於50%的佔空比)的期間能限制對線性致動器的熱損壞。
在一些實施例中,線性致動器可產生一伸展力,以使框架及/或使用者的質量克服重力。該線性致動器可產生一較小的縮回力,並且利用重力有效地移動框架及/或使用者的質量。例如,線性致動器可以產生由圖5的上部曲線所表示的一伸展力244。當線性致動器沿著伸展方向246朝向伸展狀態移動時,可以產生伸展力244。線性致動器可產生由圖5的下曲線所表示的一縮回力248。當線性致動器沿著縮回方向250朝向縮回狀態移動時,可以產生縮回力248。
線性致動器可以具有由伸展力244及縮回力248之間的比率而定義的一效率比。在一些實施例中,效率比可在整個移動範圍內基本恆定。在其他實施例中,效率比可以在縮回狀態及伸展狀態之間的移動期間改變。
在一些實施例中,效率比可大於1.0。在其他實施例中,效率比可以在1.0及10.0之間。例如,伸展力244可為1000磅的力,而縮回力248可為至少100磅的力。又在其他實施例中,效率比可以在1.0及5.0之間。例如,伸展力244可為1000磅的力,而縮回力248可為至少200磅的力。在進一步的實施例中,效率比可以在1.0及4.0之間。例如,伸展力244可為1000磅的力,而縮回力248可為至少250磅的力。在更進一步的實施例中,效率比可以在1.0及2.0之間。例如,伸展力244可為1000磅的力,並且縮回力248可為至少500磅的力。
應該理解的是,線性致動器可以在與本案所述的方向相反的方向上定向,而線性致動器配置成在朝向縮回狀態移動的同時,能克服重力而移動框架及/或使用者的質量。換句話說,線性致動器可以向上「拉」框架及/或使用者,而不是向上「推」框架及/或使用者。在這樣的實施例中,效率比可以反轉,因為縮回力可以大於伸展力。
圖6是圖示出支撐線性致動器的方法352的流程圖。方法352包括在步驟354利用桿接收一徑向力,並且在步驟356將該徑向力傳遞到支撐該桿的一梯形螺桿。在步驟358,傳遞到該梯形螺桿的力可接著向該錐形輥軸承施加一扭矩。該錐形輥軸承可支撐該梯形螺桿以抵抗該徑向力,同時允許該梯形螺桿相對於該桿而旋轉。方法352可選地包括,在步驟360中繼續旋轉該梯形螺桿以利用一伸展力使該桿朝向伸展狀態移動。此外,方法352可選地包括,在步驟362中用利用一縮回力使桿朝向縮回狀態移動,其中縮回力具有與該伸展力不同的大小。
在一些實施例中,縮回力的大小可小於伸展力的大小。例如,縮回力的大小可以小於伸展力的大小的一半。在其他示例中,縮回力的大小可以小於伸展力的大小的三分之一。又在其他示例中,縮回力的大小可以小於伸展力的大小的四分之一。在進一步示例中,縮回力的大小可以小於縮回力的伸展的五分之一。產業利用性
一般而言,本發明涉及在交叉加載期間或在向桿施加一徑向力期間支撐一線性致動器的一桿。傳統的線性致動器包括,用於支撐桿的一推力軸承或襯套,及/或支撐桿的一梯形螺桿。在含有施加到桿的橫向力或徑向力的應用中,通常不使用線性致動器,因為在這類應用中的線性致動器的一般操作壽命會較短。
在根據本案的一些實施例中,線性致動器可包括支撐該桿及/或支撐該梯形螺桿的一錐形輥軸承,該梯形螺桿支撐該桿。線性致動器可包括馬達,該馬達配置成沿該桿的一縱向軸軸向移動該桿。馬達可以藉由一殼體及一套管連接到該桿。該殼體可包含一或多個齒輪、皮帶、纜線、或其他扭矩傳遞裝置,以將扭矩從馬達傳遞到套筒中的一梯形螺桿。該梯形螺桿可以與該桿上的互補表面特徵相互作用,使得在梯形螺桿旋轉時,該桿沿該縱向軸的方向移動。
梯形螺桿可受位於殼體內的齒輪的連結驅動,並由馬達驅動。在其他實施例中,從馬達到梯形螺桿的連結可包括皮帶、鏈條、凸輪、槓桿、或用於將扭矩從馬達傳遞到梯形螺桿的其他機構。
在一些實施例中,桿可受到相對於縱向軸(即,垂直於縱向軸)在一徑向方向上所施加的一力。通過徑向力施加到該桿的扭矩,可傳遞至梯形螺桿或線性致動器的其他部件,並傳遞至梯形螺桿或其他部件與殼體及/或齒輪之間的連接。例如,徑向力可能是由在跑步機上跑步的使用者在運動系統上的側向衝擊所引起的。在其他示例中,當運動系統被定位成傾斜或下傾時,力可以由使用者的重量及/或擱置在線性致動器上的框架所施加的向下力所引起。
線性致動器包括位於桿與殼體之間的一錐形輥軸承。在一些實施例中,錐形輥軸承可定位在至少一部分的梯形螺桿與該殼體之間。例如,錐形輥軸承可以定位在該梯形螺桿的肩部與該殼體之間。
桿上的徑向力及/或軸向力,可傳遞至梯形螺桿及傳遞至錐形輥軸承。在一些實施例中,錐形輥軸承可在縱向軸與錐形輥軸承的軸承軸線之間具有一方位角。方位角度可以在具有一上限值、一下限值、或在包括5°、10°、15°、20°、25°、30°、35°、40°、45°中的任何一者的上限值及下限值的範圍內,或其間的任何值。在一些示例中,方位角度可以大於5°。在其他示例中,方位角可小於45°。又在其他示例中,方位角度可以在5°及45°之間。在進一步示例中,方位角可以在5°及30°之間。又在進一步示例中,方位角度可為大約10°。錐形輥軸承的方位角度會經定向成相對於梯形螺桿上的軸向力而接收更大的徑向力,或相對於徑向力而接收更大的軸向力,而影響線性致動器的操作壽命。
在一些實施例中,線性致動器可在一伸展方向及一縮回方向(即,「推」及「拉」方向)上產生不同的力。例如,線性致動器可經配置為在伸展方向上施加比在縮回方向上更大的力。在其他示例中,線性致動器可以被配置為在縮回方向上施加比在伸展方向上更大的力。在一些應用中,線性致動器可以在一個方向上使一或多個物體抵抗重力升高,而重力可以幫助物體沿相反方向移動。透過產生較小的力及/或以更有效的模式操作,線性致動器可減小或限制在「輔助方向」上移動時產生的熱量與消耗的能量。因此,線性致動器可具有效率比,該效率比被定義為線性致動器在第一方向上相對於第二方向產生的相對力。
在一些實施例中,效率比可以大於1.0。在其他實施例中,效率比可以在1.0及10.0之間。例如,伸展力可為1000磅的力,並且縮回力可為至少100磅的力。又在其他實施例中,效率比可以在1.0及5.0之間。例如,伸展力可為1000磅的力,並且縮回力可為至少200磅的力。在進一步的實施例中,效率比可以在1.0及4.0之間。例如,伸展力可為1000磅的力,並且縮回力可為至少250磅的力。又在進一步的實施例中,效率比可以在1.0及2.0之間。例如,伸展力可為1000磅的力,並且縮回力可為至少500磅的力。
與傳統的線性致動器相比,通過錐形輥軸承減小摩擦並提高效率以減低熱量產生,可允許線性致動器具有增加的佔空比。例如,根據本案的線性致動器可具有至少50%、至少75%、至少85%、至少95%的佔空比,或連續的佔空比。在至少一個示例中,根據本案的線性致動器可以具有至少70%的佔空比,並持續20分鐘。
在一些實施例中,根據本案的線性致動器可應用在各種運動系統中。例如,線性致動器可用於調節包含在運動系統中的跑步機、橢圓機、運動自行車、划船機、步進機、或其他運動器械的傾斜或下傾。線性致動器可以由使用者透過一運算裝置或其他界面(例如,使用者可自行選擇傾斜或下傾)來手動控制來與線性致動器通訊,或者使用者可以選擇一運算裝置上的運動程序來與線性致動器通訊。
在一些實施例中,運算裝置存取具有所選的使用者所專用的運動程序的使用者設定檔或與其通訊。可與本案所述的原理相容的使用者設定檔的資料庫的示例,包括如上所述的iFit程式。在一些示例中,藉由使用者設定檔可存取的使用者資訊,包括使用者的年齡、性別、身體組成、身高、體重、健康狀況、其他類型的資訊或其組合,其可有助於決定使用者的適當運動程序。這樣的使用者設定檔資訊可透過iFit程式而於運算裝置上取得。
冠詞「一」、「一個」及「該」用於表示在前面的描述中存在一或多個元素。用語「包括」、「包括」及「具有」是包含性的,並且意味著可能存在除所列元件之外的其他元件。另外,應當理解的是,對本案的「一個實施例」或「實施例」的引用,並非用來解釋為排除合併了所述特徵的另外的實施例的存在。例如,關於本案的實施例描述的任何元件,可以與本案描述的任何其他實施例的任何元件組合。如本領域普通技術人員所理解的,本案所述的數字、百分比、比率、或其他值旨在包括該值,以及包括「約」或「近似」所述值的其他值,均為本案的實施例所涵蓋。因此,應廣泛地解釋所述值,以包含至少足夠接近所述值的值,以進行所需的功能或達到所需的結果。所述值至少包括在合適的製造或生產過程中所預期的變化,並且可包括在所述值的5%、1%、0.1%、或0.01%內的值。
鑑於本案,本領域普通技術人員應該理解到,均等構造並不脫離本案的精神及範圍,並且可以對本案揭示的實施例進行各種改變、替換、及變更而不脫離本案的精神及範圍。包括功能性敘述「手段功能用語」的構造,旨在涵蓋在此描述為執行所述功能的結構,包括以相同方式操作的結構均等物,以及提供相同功能的均等結構。申請人的明確意圖是不對任何申請專利範圍援引手段功能用語或其他功能性用語的主張,除非「用於...構件」一詞與相關功能一起出現。落入申請專利範圍的含義及範圍內的實施例的每一個附加、刪除、及修改都包含在申請專利範圍內。
應理解的是,前面說明書中的任何方向或參考係僅為相對方向或相對移動。例如,對「前」及「後」或「頂部」及「底部」或「左」及「右」的任何引用僅僅描述相關元件的相對位置或相對移動。
在不脫離本發明的精神或特徵的情況下,本案可以以其他特定形式實施。所述的實施例應認為是說明性的而非限制性的。因此,本案的範圍由所附申請專利範圍來表示,而非前面的描述。在申請專利範圍的含義及均等範圍內的變化,將包含在本案範圍內。
作為示例,可以根據以下任何部分來描述依據本案的線性致動器:
1. 一種線性致動器,該致動器包括:
一馬達;
一桿,具有一縱向軸,該桿可透過該馬達沿著該縱向軸移動;
一殼體,支撐該馬達及該桿;及
一錐形輥軸承,位於該桿與該殼體之間。
2. 如部分1的致動器,還包括一梯形螺桿,該梯形螺桿至少部分地位在該桿內並且可繞該縱向軸旋轉。
3. 如部分2的致動器,還包括複數個旋轉齒輪,該些旋轉齒輪位在該馬達與該梯形螺桿之間,並提供該二者之間的連接。
4. 如部分2或3的致動器,該錐形輥軸承接觸該梯形螺桿的肩部與該殼體。
5. 如任何前述部分的致動器,該錐形輥軸承具有與縱向軸成5°至45°之間的一軸承軸線。
6. 如任何前述部分的致動器,該桿具有相對於該縱向軸的一伸展方向及一縮回方向,該馬達具有與該桿的該伸展方向相關聯的一伸展旋轉方向,及與該縮回方向相關聯的一縮回旋轉方向,其中馬達在該伸展旋轉方向上產生的扭矩大於在該縮回旋轉方向上產生的扭矩。
7. 如任何前述部分的致動器,該線性致動器在一第一縱向方向上產生的力至少為在一第二縱向方向上產生的力的兩倍。
8. 一種運動系統,該系統包括:
一基座;
一框架,可移動地連接至該基座;
一線性致動器,位於至少一部分的基座與至少一部分的框架之間,以施加一力以使該框架相對於該基座移動,該線性致動器包括:
一馬達;
一桿,具有一縱向軸,該桿可透過該馬達沿著該縱向軸移動;
一殼體,支撐該馬達及該桿;及
一錐形輥軸承,位於該桿與該殼體之間。
9. 如部分8的運動系統,該框架可樞轉地連接至該基座。
10. 如部分8或9的運動系統,該框架包括一跑步機。
11. 如部分8至10中任一者的運動系統,還包括與該線性致動器通訊的一運算裝置。
12. 如部分11的運動系統,該運算裝置具有儲存在其上的運動程序,能以預定間隔致動該線性致動器,其具有至少40%的佔空比。
13. 如部分8至12中任一者的運動系統,該框架具有相對於該基座至少0°到至少15°的一移動範圍。
14. 如部分8至13中任一者的運動系統,該線性致動器在膨脹方向上產生至少1000磅的力。
15. 如部分8至14中任一者的運動系統,該線性致動器的縱向軸經定向而相對於處於伸展狀態的重力方向具有至少2°的角度。
16. 一種支撐一線性致動器的一桿的方法,該方法包括步驟:
用該線性致動器的一桿接收一徑向力;
將該徑向力傳遞至一梯形螺桿;及
用該梯形螺桿向一錐形輥軸承施加一扭矩。
17. 如部分16的方法,還包括以至少1000磅的一伸展力移動該桿以朝向一伸展狀態的步驟。
18. 如部分17的方法,還包括利用一縮回力移動該桿朝向一縮回狀態,其中該縮回力的大小不同於該伸展力的大小。
19. 如部分18的方法,該伸展力的大小至少是該縮回力的大小的兩倍。
20. 如部分18或19的方法,其中使該桿朝向一伸展狀態移動並使該桿朝向該縮回狀態移動,會導致在20分鐘的時間內至少具有70%的佔空比。
100‧‧‧線性致動器
102‧‧‧馬達
104‧‧‧桿
106‧‧‧縱向軸
108‧‧‧殼體
110‧‧‧套筒
112‧‧‧運動系統
114‧‧‧基座
116‧‧‧框架
118‧‧‧鉸鏈
120‧‧‧運算裝置
200‧‧‧線性致動器
202‧‧‧馬達
204‧‧‧桿
206‧‧‧縱向軸
208‧‧‧殼體
210‧‧‧套筒
222‧‧‧梯形螺桿
224‧‧‧互補界面
226‧‧‧齒輪
228‧‧‧徑向力
230‧‧‧錐形輥軸承
231‧‧‧內圈
232‧‧‧肩部
233‧‧‧輥
234‧‧‧方位角
235‧‧‧外圈
236‧‧‧軸承軸線
237‧‧‧輥滾珠軸承
238‧‧‧第一端
239‧‧‧內徑
240‧‧‧連接點
241‧‧‧長度
242‧‧‧向下的力
244‧‧‧伸展力
246‧‧‧伸展方向
248‧‧‧縮回力
250‧‧‧縮回方向
300‧‧‧線性致動器
302‧‧‧馬達
304‧‧‧桿
306‧‧‧縱向軸
308‧‧‧殼體
322‧‧‧梯形螺桿
328‧‧‧徑向力
330‧‧‧角接觸輥軸承
331‧‧‧內圈
332‧‧‧肩部
333‧‧‧滾珠軸承
335‧‧‧外圈
352‧‧‧方法
354‧‧‧步驟
356‧‧‧步驟
358‧‧‧步驟
360‧‧‧步驟
362‧‧‧步驟
為了描述可以獲得本案的上述的及其他特徵的方式,透過參考在附圖中所示的其特定實施例來呈現更具體的描述。為了更好地理解,在各個附圖中,相同的元件由相同的參考符號表示。雖然一些附圖可為概念的示意性或誇大的表示,但是至少一些附圖可以按比例繪製。應理解附圖記載了一些示例性實施例,將透過使用附圖以附加的特徵及細節來說明並解釋實施例,在其中:
圖1是根據本案的至少一個實施例的線性致動器的立體圖;
圖2是根據本案的至少一個實施例的運動系統的側視圖;
圖3-1是根據本案的至少一個實施例的線性致動器的側剖視圖;
圖3-2是根據本案的至少一個實施例的另一線性致動器的側剖視圖;
圖4-1是根據本案的至少一個實施例的支撐處於縮回狀態的運動平台的線性致動器的側剖視圖;
圖4-2是根據本案的至少一個實施例的支撐處於伸展狀態的運動平台的線性致動器的側剖視圖;
圖5是圖示出根據本案的至少一個實施例的由線性致動器施加一力,以使平台傾斜的曲線圖;及
圖6是圖示出根據本案的至少一個實施例的支撐線性致動器中的桿的方法的流程圖。
國內寄存資訊 (請依寄存機構、日期、號碼順序註記)
無
國外寄存資訊 (請依寄存國家、機構、日期、號碼順序註記)
無
100‧‧‧線性致動器
102‧‧‧馬達
104‧‧‧桿
106‧‧‧縱向軸
108‧‧‧殼體
110‧‧‧套筒
Claims (6)
- 一種線性致動器,該致動器包括:一馬達;一桿,具有一縱向軸,該桿藉由該馬達而沿著該縱向軸為可移動;一殼體,支撐該馬達及該桿;及一錐形輥軸承,位於該桿與該殼體之間,該錐形輥軸承具有一軸承軸線,該軸承軸線與該縱向軸成5°至45°傾斜。
- 如請求項1所述的致動器,還包括梯形螺桿,該梯形螺桿至少部分地位在該桿內並且可繞該縱向軸旋轉。
- 如請求項2所述的致動器,還包含複數個旋轉齒輪,該些旋轉齒輪設置在該馬達與該梯形螺桿之間,並提供該二者之間的連接。
- 如請求項2所述的致動器,該錐形輥軸承接觸該梯形螺桿的一肩部與該殼體。
- 如請求項1所述的致動器,該桿具有相對於該縱向軸的一伸展方向及一縮回方向,該馬達具有與該桿的該伸展方向相關聯的一伸展旋轉方向,及與該縮回方向相關聯的一縮回旋轉方向,其中該馬達在該伸展旋轉方向上產生的扭矩大於在該縮回旋轉方向上 產生的扭矩。
- 如請求項1所述的致動器,該線性致動器在一第一縱向方向上產生的力至少為在一第二縱向方向上產生的力的兩倍。
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CN112262521B (zh) | 2023-09-12 |
EP3815226A4 (en) | 2022-02-16 |
EP3815226A1 (en) | 2021-05-05 |
US20190376585A1 (en) | 2019-12-12 |
CN112262521A (zh) | 2021-01-22 |
EP3815226B1 (en) | 2023-05-31 |
TW202000267A (zh) | 2020-01-01 |
WO2019241073A1 (en) | 2019-12-19 |
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