TWI753515B - 軌道式張力裝置 - Google Patents
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- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
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- F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
- F16H7/1281—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
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Abstract
一種軌道式張力裝置包括:環狀的基座;環形部件,在滾珠軸承上以軸頸方式安裝至環狀的基座,而該環形部件具有環形部件旋轉軸線(A-A);第一皮帶輪,其以軸頸方式安裝至環形部件,而第一皮帶輪旋轉軸線(B-B)係偏離環形部件旋轉軸線(A-A);樞轉臂,樞轉地安裝至環形部件,而樞轉臂樞轉軸線(C-C)係偏離環形部件旋轉軸線(A-A),第二皮帶輪則係以軸頸方式安裝至樞轉臂;扭轉彈簧,使樞轉臂朝第一方向偏置;滾珠軸承具有第一座圈及第二座圈;環形部件係固定至第一座圈;環狀基座係固定至第二座圈;以及,阻尼機構,摩擦地配置在環形部件與基座之間。
Description
本發明係有關於一種軌道式張力裝置,更具體地說,有關於一種軌道式張力裝置,其包括:具有第一座圈及第二座圈的滾珠軸承;安裝至滾珠軸承第一座圈的環形部件;以及,安裝至滾殊軸承第二座圈的環狀基座。
在汽車上通常使用多肋紋皮帶(multi-ribbed belt),以在發動機曲軸與附加件之間傳遞動力。關於傳統的驅動,發動機曲軸皮帶輪係透過一條皮帶或多條皮帶以驅動附加件。當透過一皮帶驅動多個附加件時,通常會使用張力裝置。即使當將張力裝置臂正確地放置在適當位置,皮帶安裝張力仍會相對於皮帶之長度公差而稍有變化。
馬達發電機組(MGU)被用於實施BSG(皮帶啟動發電機)的內燃發動機(IC engine)之啟動/停止、用於提高發動機加速的扭矩輔助、以及除了在內燃發動機運轉期間交流發電機的正常發電之外的再生發電。可以藉由使用BSG技術以節省可觀的燃料及減少廢氣排放。
為了在兩種不同的驅動模式(亦即,MGU驅動及隨著發動機驅動的MGU發電)下控制張力,開發了一種軌道式張力裝置。此張力裝置通常具有旋轉環及藉由一只彈簧以連接至旋轉環的樞轉臂。張力裝置係安裝至MGU。這種形式的張力裝置可以在兩種模式(馬達驅動及發電)下控制皮帶的操作張力。然而,與傳統的單臂式張力裝置不同,以最佳化方式定位軌道式張力裝置皮帶輪來減小張力變化,是不切實際的。由於皮帶長度公差以及皮帶輪位置及尺寸所造成之安裝張力變化,可能比單臂式張力裝置大得多。皮帶張力是決定皮帶驅動之摩擦損失或動力損失的重要因素,因此期望在不犧牲系統功能性能的情況下降低皮帶張力。
習知技藝係在基座與旋轉環之間利用塑料襯套以促進運動。
習知技藝的代表是US20190078667,揭露了一種張力裝置,包括:基座,界定出一個孔,該孔具有中心C,而此孔的直徑足以容納從動皮帶輪;旋轉臂,藉由連接至基座的保持構件以與基座接合,該旋轉臂可繞著中心C旋轉;樞轉臂,在樞軸上安裝至旋轉臂,其樞軸係偏離中心C;第一皮帶輪,以軸頸方式安裝至旋轉臂;第二皮帶輪,以軸頸方式安裝至樞轉臂;扭轉彈簧,接合在旋轉臂與樞轉臂之間,以便使第二皮帶輪朝第一皮帶輪偏置;阻尼構件,摩擦地接合在基座與旋轉臂之間;以及,其旋轉臂界定了用於容納第一皮帶輪緊固件的部分,藉此,第一皮帶輪位置係可調整。
所需要的是一種軌道式張力裝置,包括:具有第一座圈及第二座圈的滾珠軸承;安裝至滾珠軸承第一座圈的環形部件;以及,安裝至滾珠軸承第二座圈的環狀基座。本發明滿足此需求。
本發明的主要態樣是提供一種軌道式張力裝置,包括:具有第一座圈及第二座圈的滾珠軸承;安裝至滾珠軸承第一座圈的環形部件;以及,安裝至滾珠軸承第二座圈的環狀基座。
將藉由本發明之以下描述及附圖,以指出本發明之其它態樣,或使本發明之其它態樣易於明瞭。
本發明係一種軌道式張力裝置,包括:環狀基座;環形部件,在滾珠軸承上以軸頸方式安裝至該環狀基座,而該環形部件具有環形部件旋轉軸線(A-A);第一皮帶輪,以軸頸方式安裝至環形部件,而第一皮帶輪旋轉軸線(B-B)係偏離環形部件旋轉軸線(A-A);樞轉臂,樞轉地安裝至環形部件,而樞轉臂樞轉軸線(C-C)係偏離環形部件旋轉軸線(A-A),第二皮帶輪則係以軸頸方式安裝至樞轉臂;扭轉彈簧,使樞轉臂朝第一方向偏置;滾珠軸承具有第一座圈及第二座圈;環形部件係固定至第一座圈;環狀基座係固定至第二座圈;以及,阻尼機構,摩擦地配置在環形部件與基座之間。
前面已經相當廣泛地概述本發明的特徵及技術優點,以便可以更加理解下面本發明的詳細描述。在下文中將描述構成本發明申請專利範圍的主題之本發明的附加特徵及優點。熟悉此項技藝者應該理解,所揭露之概念及特定具體例可以輕易地作為修改或設計用於實施本發明的相同目的之其它結構的基礎。熟悉此項技藝者亦應該了解到,這樣的等效構造不脫離所附申請專利範圍請求項中所闡述之本發明的精神及範圍。當結合附圖來考慮時,從下面描述將更加理解被認為是本發明的特徵之關於其組織及操作方法的新穎特徵與另外的目的及優點。然而,應該清楚理解,每個附圖的提供僅是用於說明及描述,並無意作為對本發明的限制。
被併入或構成說明書之一部分的諸多附圖例示了本發明之較佳具體例,並且與其說明一起用於解說本發明的原理。圖1係張力裝置的後透視立體圖。張力裝置1000包括基座10、環形部件20及樞轉臂30。滾珠軸承40配置在基座10與環形部件20之間。基座10與環形部件20係一起以軸頸方式安裝在滾殊軸承40上。
皮帶輪21在軸承22上以軸頸方式安裝至環形部件20。皮帶輪31在軸承34上以軸頸方式安裝至樞轉臂30。皮帶輪21的旋轉軸線B-B偏離軸承40的旋轉軸線A-A,從而偏離環形部件20的旋轉軸線A-A。樞轉臂30繞著樞轉軸線C-C樞轉。環形部件20相對於基座10繞著軸線A-A旋轉平移。在運轉中,環形部件20根據皮帶張力變化及MGU系統的運轉情況,在軸線A-A周圍的不同位置之間擺動。
使皮帶在附加件驅動系統中對準。皮帶係與皮帶輪21及皮帶輪31接合。參見圖6,附加件驅動系統可以包含某些發動機驅動的附加件,包括:水泵、燃油噴射泵、空調壓縮機、油泵、動力轉向泵,在此僅舉幾例。
基座10係呈環狀或環體(toru)之形式,並且包括帶有多個孔的安裝支架11。安裝支架11係用於使用緊固件(諸如螺栓)以將張力裝置附接至馬達發電機組(MGU)。參見圖6,軸線A-A與MGU軸MGUS之旋轉軸線對準。基座環狀形式係與軸線A-A對準。
在所揭露的具體例中,軸承40包括可從例如Bauhaun、Taide、NSK、Nachi或SKF獲得之30BD40雙列斜角接觸軸承。諸多其它者亦提供合適的雙列軸承。用於本文所述之具體例的實例尺寸是30mm 內徑(ID)55mm外徑(OD)23mm寬。亦可以根據使用者的需要而使用密封式深溝單列軸承。一個實例尺寸的單列軸承是30mm內徑55mm外徑13mm寬。任一類型的軸承較佳地皆是密封的,以保留住潤滑劑並防止污染。潤滑劑可以包括該項技藝中已知的任何油脂或油。
將軸承40壓合至基座10及環形部件20中。軸承40之內座圈41被樁固至環形部件20上。軸承40之外座圈42被樁固至基座10之圓柱形部分12。樁固(stake)通常被視作為將兩個組件固定在一起的手段,例如網址https://www.assemblymag.com/articles/87755-assembly-presses-crimping-staking-swaging-clinching所揭示者。
滾珠軸承40之使用改善了環形部件20與基座10之長期操作對準。使皮帶輪21、31從基座10之平面向外移開,因此,當施加皮帶拉力負載時,便產生力偶(couple)。力偶作用造成環形物件20相對於基座10旋轉。習知技藝的軌道式張力裝置係利用塑料襯套以抵抗力偶及保持基座及環形部件之共面對準。然而,塑料襯套會隨著時間的流逝而變質,導致環形部件與基座的逐漸錯位,從而導致皮帶輪與皮帶平面的錯位。這轉而造成皮帶之非期望的噪音及過早磨損。如果繼續讓錯位不減輕,皮帶最終可能會與皮帶輪脫離。過度的噪音亦會成為一個因素。另一方面,與塑料襯套相比,隨著時間的推移,滾珠軸承係更加耐用且更加持久,並且可以更精確地保持環形部件與基座之間的對準。雙列軸承係優於單列軸承,因為,與單列軸承相比,它更加耐受「搖動」。然而,取決於系統設計而定,可以選擇其中一個。可以同樣成功地使用滾針軸承。
圖2係張力裝置前透視立體圖。軸承40之內座圈41壓合至環形部件20之圓柱形部分25上。座圈41係樁固至部分25。部分25可以包括空心的圓柱體或實心的軸。在安裝過程期間,銷37接合於環形部件20中的孔38。銷37將樞轉臂30保持在預定的位置。
圖3係張力裝置的前視圖。在此具體例中,皮帶輪21、31是在張力裝置之同一側上,通常面向MGU。這可以稱為倒置(inverted)設計。
圖4係分解圖。阻尼機構包括符號51、52、53之元件。摩擦元件53與環形部件20接合。波形彈簧51壓在鋼環52上。環52藉由將來自波形彈簧51的法向力分配至摩擦元件53以保護摩擦元件53。摩擦元件53係藉由凸片54以鎖定至基座10,以防止摩擦元件53之相對旋轉。摩擦元件53抑制了環形部件20之運動。
皮帶輪21以軸頸方式安裝在軸承22上。防塵罩24防止碎屑進入軸承22。螺栓23保持防塵罩24及軸承22,從而將皮帶輪21保持在環形部件20上。
皮帶輪31以軸頸方式安裝在軸承34上。防塵罩35防止碎屑進入軸承34。螺栓36保持防塵罩35及軸承34,從而將皮帶輪31保持在樞軸臂30上。
銷37暫時地接合在樞轉臂30與基座10之間。可移除的銷37係將樞轉臂30鎖定在預定的安裝位置。在將張力裝置安裝於MGU上的最終位置之後,由安裝人員移除銷37,從而鬆開樞轉臂30及皮帶輪31,以將負載施加至皮帶上。
扭轉彈簧32之端部39承載於擋塊26上。使扭轉彈簧32朝退繞(unwind)方向加載。端部391承載於樞轉臂30中之擋塊392上。
圖5係圖3中之剖面5-5。顯示了雙列軸承40。內座圈41壓合至圓柱形部分25上。外座圈42壓合至圓柱部分12上。軸承之使用消除了對習知技藝的連接之需求,而在習知技藝的連接中,環形部件係夾緊了基座,或是基座夾緊了環形部件。取而代之,本發明的張力裝置係藉由軸承以將環形部件與基座完全連結在一起,而無需夾具或重疊式接頭。
當與塑料襯套相比時,軸承40係以較小的運動阻力提供環形部件在基座上有更精確的運動。
阻尼機構51、52、53係接合在基座10與環形部件20之間,以抑制環形部件的運動。諸多凸片54分別接合於基座10中之諸部分13,以防止摩擦元件53之相對於基座10的運動。以此方式,摩擦阻尼運動存在摩擦元件53與環形部件20之間。在一個替代具體例中,在同等效果的情況下,將摩擦元件53被鎖定至環形部件20,而在摩擦元件53與基座10之間發生相對的摩擦運動。
圖6係具有本發明張力裝置的MGU系統。張力裝置1000被安裝至作為附加件驅動系統之一部分的MGU。使皮帶B在發動機曲軸CRK上之皮帶輪、空調壓縮機AC與帶有MGU軸MGUS的MGU之間進行對準。惰輪IDL可確保皮帶在發動機上正確的路線安排。樞轉臂30將皮帶輪31壓抵皮帶,以便施加皮帶拉力負載。皮帶負載可防止皮帶在系統皮帶輪上滑動,而其滑動會引起噪音及皮帶過早磨損。
對於停止/啟動操作,當發動機運轉時,MGU會產生電力。在此模式下,MGU係由發動機驅動。當發動機停止時,MGU變成驅動器,並提供啟動動力給發動機。MGU藉由使用馬達離合器(未顯示)以使空調壓縮機保持運轉。馬達離合器係安裝至空調壓縮機,且由車輛ECU控制。曲軸CRK亦可以包括單向離合器(未顯示),以有助於操作。
一種軌道式張力裝置,包括:環狀基座;環形部件,藉由滾珠軸承以與該環狀基座旋轉地接合,而該環形部件具有環形部件旋轉軸線A-A;第一皮帶輪,以軸頸方式安裝至環形部件,且具有偏離環形部件旋轉軸線A-A的第一皮帶輪旋轉軸線B-B;一樞轉臂,樞轉地安裝至環形部件,而樞轉臂樞轉軸線C-C係偏離環形部件旋轉軸線A-A,第二皮帶輪則係以軸頸方式安裝至樞轉臂;扭轉彈簧,使該樞轉臂朝第一方向偏置;滾珠軸承具有第一座圈及第二座圈;環形部件係樁固至第一座圈;環狀的基座係樁固至第二座圈;以及,阻尼機構,摩擦地配置在環形部件與基座之間。
一種軌道式張力裝置,包括:環狀基座;環形部件,在滾珠軸承上以軸頸方式安裝至環狀基座,而該環形部件具有環形部件旋轉軸線A-A;第一皮帶輪,以軸頸方式安裝至環形部件,而第一皮帶輪旋轉軸線B-B係偏離環形部件旋轉軸線A-A;樞轉臂,樞轉地安裝至環形部件,而樞轉臂樞轉軸線C-C係偏離環形部件旋轉軸線A-A,第二皮帶輪則係以軸頸方式安裝至樞轉臂;扭轉彈簧,使樞轉臂朝第一方向偏置;滾珠軸承具有第一座圈及第二座圈;環形部件係固定至第一座圈;環狀基座係固定至第二座圈;以及,阻尼機構,摩擦地配置在環形部件與基座之間。
一種軌道式張力裝置,包括:基座;環形部件,與基座一起以軸頸方式安裝在滾珠軸承上,而該環形部件具有環形部件旋轉軸線A-A;第一皮帶輪,以軸頸方式安裝至環形部件,而第一皮帶輪旋轉軸線B-B係偏離環形部件旋轉軸線A-A;樞轉臂,樞轉地安裝至環形部件,而樞轉臂樞轉軸線C-C係偏離環形部件旋轉軸線A-A,第二皮帶輪則係以軸頸方式安裝至樞轉臂;扭轉彈簧,使樞轉臂朝第一方向偏置;以及阻尼機構,摩擦地配置在環形部件與基座之間。
雖然在此已經描述本發明的一種形式,但對於熟悉此項技藝者而可明瞭的是,在不脫離在此所述之本發明的精神及範圍的情況下,可以對諸多部件的構造及關係進行改變。除非另外特別指出,附圖中所描繪的組件未按比例來繪製。除非另外指出,數字資訊僅是示例性的,且無意限制本發明的範圍。再者,並無意採用「手段/功能」、「步驟/功能」語言界定申請專利範圍,除非在特定請求項中明確使用字詞「用於…的手段」或「用於…的步驟」。如果在附圖中有任何說明或在本文中有任何描述的話,則本發明絕對不應受限於示例性具體例或數值尺寸。
10:(環狀)基座
11:安裝支架
12:(基座)圓柱形部分
13:(基座)部分
20:環形部件
21:皮帶輪
22:軸承
23:螺栓
24:防塵罩
25:(環形部件)(圓柱形)部分
26:擋塊
30:樞轉臂
31:皮帶輪
32:扭轉彈簧
34:軸承
35:防塵罩
36:螺栓
37:銷
38:(環形部件)孔
39:(彈簧)端部
40:(滾珠)軸承;(雙列)軸承
41:(內)座圈;(第一)座圈
42:(外)座圈;(第二)座圈
51:波形彈簧;(阻尼機構)元件
52:(鋼)環;(阻尼機構)元件
53:摩擦元件;(阻尼機構)元件
54:凸片
391:(彈簧)端部
392:(樞轉臂)擋塊
1000:張力裝置
A-A:(環形部件)(旋轉)軸線
AC:空調壓縮機
B:皮帶
B-B:(第一皮帶輪)旋轉軸線
C-C:(樞轉臂)樞轉軸線
CRK:(發動機)曲軸
IDL:惰輪
MGU:馬達發電機組
MGUS:MGU軸
圖1係此張力裝置的後透視立體圖。
圖2係此張力裝置的前透視立體圖。
圖3係此張力裝置的前視圖。
圖4係本發明的分解圖。
圖5係沿圖3中5-5線的剖面圖。
圖6係具有本發明張力裝置的MGU系統之示意圖。
10:(環狀)基座
20:環形部件
21:皮帶輪
30:樞轉臂
31:皮帶輪
1000:張力裝置
AC:空調壓縮機
B:皮帶
CRK:(發動機)曲軸
IDL:惰輪
MGU:馬達發電機組
MGUS:MGU軸
Claims (20)
- 一種軌道式張力裝置,包括: 一環狀的基座; 一環形部件,在一滾珠軸承上以軸頸方式安裝至該環狀的基座,而該環形部件具有環形部件旋轉軸線(A-A); 一第一皮帶輪,以軸頸方式安裝至該環形部件,而第一皮帶輪旋轉軸線(B-B)係偏離該環形部件旋轉軸線(A-A); 一樞轉臂,樞轉地安裝至該環形部件,而樞轉臂樞轉軸線(C-C)係偏離該環形部件旋轉軸線(A-A),一第二皮帶輪則係以軸頸方式安裝至該樞轉臂; 一扭轉彈簧,使該樞轉臂朝第一方向偏置; 該滾珠軸承具有一第一座圈及一第二座圈; 該環形部件係固定至該第一座圈; 該環狀的基座係固定至該第二座圈;以及 一阻尼機構,摩擦地配置在該環形部件與該基座之間。
- 如請求項1之軌道式張力裝置,其中,該滾珠軸承係樁固至該環形部件。
- 如請求項1之軌道式張力裝置,其中,該滾珠軸承係樁固至該基座。
- 如請求項1之軌道式張力裝置,其中,該阻尼機構包括一摩擦構件及一彈簧。
- 如請求項1之軌道式張力裝置,其中,該滾珠軸承包括一雙列軸承。
- 如請求項1之軌道式張力裝置,其中,該滾珠軸承係一密封式軸承。
- 如請求項4之軌道式張力裝置,其中,該彈簧包括一波形彈簧。
- 如請求項1之軌道式張力裝置,其中,該滾珠軸承之第一座圈係一內座圈。
- 如請求項1之軌道式張力裝置,其中,該滾珠軸承之第二座圈係一外座圈。
- 一種軌道式張力裝置,包括: 一環狀的基座; 一環形部件,藉由一滾珠軸承以與該環狀的基座旋轉地接合,而該環形部件具有環形部件旋轉軸線(A-A); 一第一皮帶輪,以軸頸方式安裝至該環形部件,且具有偏離該環形部件旋轉軸線(A-A)的第一皮帶輪旋轉軸線(B-B); 一樞轉臂,樞轉地安裝至該環形部件,而樞轉臂樞轉軸線(C-C)係偏離該環形部件旋轉軸線(A-A),一第二皮帶輪則係以軸頸方式安裝至該樞轉臂; 一扭轉彈簧,使該樞轉臂朝第一方向偏置; 該滾珠軸承具有一第一座圈及一第二座圈; 該環形部件係樁固至該第一座圈; 該環狀的基座係樁固至該第二座圈;以及 一阻尼機構,摩擦地配置在該環形部件與該基座之間。
- 如請求項10之軌道式張力裝置,其中,該滾珠軸承係一雙列軸承。
- 如請求項10之軌道式張力裝置,其中,該滾珠軸承係一單列軸承。
- 如請求項12之軌道式張力裝置,其中,該單列軸承係一深溝單列軸承。
- 如請求項11之軌道式張力裝置,其中,該阻尼機構包括一波形彈簧及一摩擦元件。
- 一種軌道式張力裝置,包括: 一基座; 一環形部件,該環形部件與該基座係一起以軸頸方式安裝在一滾珠軸承上,而該環形部件具有環形部件旋轉軸線(A-A); 一第一皮帶輪,以軸頸方式安裝至該環形部件,而第一皮帶輪旋轉軸線(B-B)係偏離該環形部件旋轉軸線(A-A); 一樞轉臂,樞轉地安裝至該環形部件,而樞轉臂樞轉軸線(C-C)係偏離該環形部件旋轉軸線(A-A),一第二皮帶輪則係以軸頸方式安裝至該樞轉臂; 一扭轉彈簧,使該樞轉臂朝第一方向偏置;以及 一阻尼機構,摩擦地配置在該環形部件與該基座之間。
- 如請求項15之軌道式張力裝置,其中,該滾珠軸承包括一密封式雙列軸承。
- 如請求項15之軌道式張力裝置,其中,該滾珠軸承包括一密封式深溝單列軸承。
- 如請求項15之軌道式張力裝置,其中,該阻尼機構包括一波形彈簧及一摩擦元件。
- 如請求項15之軌道式張力裝置,其中,該基座及該環形部件係樁固至該滾珠軸承。
- 如請求項15之軌道式張力裝置,其中,進一步包括:一可移除的銷,與該樞轉臂及該基座相接合。
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Publication number | Publication date |
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EP4010612A1 (en) | 2022-06-15 |
TW202116578A (zh) | 2021-05-01 |
JP7404505B2 (ja) | 2023-12-25 |
US20220260138A1 (en) | 2022-08-18 |
WO2021026319A1 (en) | 2021-02-11 |
CA3148781A1 (en) | 2021-02-11 |
BR112022002230A2 (pt) | 2022-04-19 |
JP2022543807A (ja) | 2022-10-14 |
CN114207317A (zh) | 2022-03-18 |
US11333223B2 (en) | 2022-05-17 |
US20210041010A1 (en) | 2021-02-11 |
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