200422539 玖、發明說明： 【發明所屬之技術領域】 本發明係關於一種空氣彈簧，且更具體地係關於一種空 氣彈簧套筒，其中套筒端皺褶區域係被折疊回本身以預防 透過加強繩之氣壓損失。 【先前技術】 空氣彈簧一般係包含各端連接至活塞，或一端連接至活 塞而另一端為一端蓋之彈性套筒。壓縮氣體，通常為空氣， 係以加壓狀態包含在空氣彈簧中。在空氣彈簧中之壓力直 接影響空氣彈簧之彈率。該空氣彈簧彈性套筒，或簡稱套 筒，係藉由一圓珠（bead )或皺褶連接至各活塞及/或各端 蓋。該圓珠包含一套筒材料中之金屬帶。 該空氣彈簧彈性套筒係可壓縮及擴張以吸收車輛懸吊 之動作，操作套筒以在各活塞表面上捲折，活塞表面形狀 會影響空氣彈簧之操作特徵。更具體地，在壓縮衝擊下， 捲折葉（rolling lobe)係形成在套筒中活塞面之一或雙面 上。因此，在此情況下空氣彈簧亦可作為捲折葉空氣彈簧。 捲折葉空氣彈簧之性能係藉由減少套筒壁的厚度及減 少製造套筒之彈性體的模數來增強。然而，缺點係為難以 達成套筒壁之正確壓縮，而維持皺褶連接完整性，特別是 剛性硬體。典型地，摺疊一薄壁套筒至剛性硬體將產生導 致氣體洩漏之皺摺切口 ，因此使得彈簧配件無法使用。 此技藝之代表係為1 9 9 3年頒與Burk ley等人之美國專 利第5，2 5 3，8 5 0號，其係揭露一具有端部位之套筒，該端 5 312/發明說明書(補件)/93-03/93100211 200422539 部位係纏繞著一珠環且摺疊在至少一端部件之環狀捲折部 中。 所需要的是一種空氣彈簧，其具有一在捲折葉區域中之 薄壁彈性套筒，且具有在端皺褶區域中之捲折物以預防透 過加強繩之氣壓損失。本發明係可滿足此需求。 【發明内容】 本發明之主要態樣係提供一空氣彈簧，其具有一在捲折 葉區域中之薄壁彈性套筒，且具有在端皺褶區域中之捲折 物以預防透過加強繩之氣壓損失。 本發明之其他態樣係可藉由下列本發明之敘述且伴隨 之圖式被指出且清楚達成。 本發明包含一空氣彈簀，且更具體地為具有一在捲折葉 區域中之薄壁彈性套筒，且具有在端皺褶區域中之捲折物 以預防捲曲期間損壞之彈性套筒。 【實施方式】 圖1係顯示先前技術中薄壁空氣彈簧之套筒。空氣彈簧 一般包含各端連接至活塞（端部件），或一端連接至活塞而 另一端為一端蓋（端部件）之管狀彈性套筒（圖未示）。壓 縮氣體，通常為空氣，係以加壓狀態包含在空氣彈簧中。 在空氣彈簧中之壓力係直接影響空氣彈簧之彈率。 該空氣彈簧彈性套筒，或簡稱為套筒，係藉由一圓珠或 皺褶附著或連接至各活塞及/或各端蓋。該圓珠包含一套筒 材料中之金屬帶。該皺褶係為連接工具，其使用以徑向壓 縮方式形成以在金屬帶與一端蓋或活塞間捕捉套筒之金屬 6 3 12/發明說明 $(補件)/93-03/93 100211 200422539 帶。 該空氣彈簧彈性套筒係可軸向壓縮且擴張以吸 懸吊之動作，例如，空氣彈簧係與其連接。操作套 各活塞表面上捲折，活塞表面形狀會影響空氣彈簧 特徵。更具體地，在壓縮衝擊下，捲折葉係形成在 之活塞面上。因此，在此情況下空氣彈簧亦可作為 空氣彈簧。 捲折葉空氣彈簧之性能係藉由減少套筒壁的厚 少製造套筒之彈性體的模數來增強。然而，缺點係 達成套筒壁之正確壓縮，而維持皺褶連接完整性， 剛性活塞或蓋。典型地，摺疊一薄壁套筒至剛性活 很可能將產生皺褶切口 ，因此使得彈簧配件無法使 圖1中，套筒100包含端，意即，端蓋皺褶區域 活塞端皺褶區域1 0 3。設置在端1 0 1及1 0 3間之捲 域1 0 2係包含如所示之尖細形狀，或亦可描述為一 狀。該套筒具有實質上一致厚度T 1。T 1係在約1 . 2 2公釐之範圍。套筒之彈性體1 0 6可包含聚氣丁二 丁二烯溴化丁基橡膠、天然橡膠、氣化丁基橡膠、 丙橡膠（E P D Μ )、環氧氣丙烷、亞硝酸鹽或丁苯橡膠（ 或上述兩種或多種之結合。 該套筒更包含一内加強繩1 0 4，其係沿著套筒長 旋缠繞在套筒體中，見圖1。力σ強繩1 0 4可包含尼 酯、聚酿胺纖維、鋼絲、玻璃纖維、聚乙烯或聚丙 上述兩種或多種之結合。 3 丨 2/發明說明(補件)/93-03/93100211 收車輛 筒以在 之操作 套筒中 捲折葉 度及減 為難以 特別是 塞或蓋 用。 1 0 1及 折葉區 圓筒形 公釐至 烯、聚 三元乙 S B R )， 度L螺 龍、聚 稀，或 200422539 在本發明套筒與空氣彈簧之例子中，套筒1 ο 0之 係藉由折疊或捲繞而增厚而在捲曲葉區域1 0 2中維 厚度Τ1。因此，可使用在此技藝中習知之標準皺褶 數而預防在套筒中之皺褶切口 。意即，藉由向外折 曲套筒各端回到其本身，可在各端製造雙層厚度而 捲折葉區域1 0 2中之薄壁套筒，見圖3。 藉由本發明套筒達成之另一改良處適用於空氣 置，其中該套筒之一端係設置在彈簧壓力室之内， 空隙原因。對此配置，其中一端係設置在彈簧壓力室 一先前技術套筒端必須以分離步驟密封以預防經由 之空氣或氣體壓力損失，該加強繩係由壓縮空氣或 著力〇強繩之「毛細作用（w i c k i n g )」產生。藉由轉 套筒使該端折疊或捲回到其本身，且接著正常地以 件摺疊，加強繩端係不暴露於壓力室1 0 5，藉以消 強繩端上使用第二密封之需求，見圖5。 圖2顯示摺疊至一端蓋之先前技術薄壁空氣彈簧 橫剖面圖。套筒1 0 0之皺褶區域1 0 1係藉由皺褶部 連接至端蓋2 0 1。皺褶部件2 0 2係使用此技藝中習 及方法摺疊。皺褶部件202包含金屬帶。 圖3顯示在各端具有一捲折物之套筒之横剖面圖 物3 0 0及捲折物3 0 1係在套筒1 0 0之各端中使得端 3 0 3係從套筒長軸A - A徑向地向外設置而製成。加 係暴露於端3 0 2及3 0 3。 圆/1顯示於圖 1之 4-4的套筒及力σ強繩之部分 3 12/發明説丨丨件)/93-03/93 丨 00211 皺褶端 持套筒 壓縮係 疊或捲 維持在 彈簧配 可能為 之内， 加強繩 氣體沿 換空氣 皺褶部 除在加 套筒之 件2 02 知工具 。捲折 3 0 2及 強繩端 橫剖面 200422539 圖。繩1 0 4係螺旋地彼此接鄰設置於彈性體1 0 6之 強繩之垂直配置係在此技藝中為熟知且被揭露， C r a b t r e e之美國專利第4，7 6 3，8 8 3號中（1 9 8 8年） 一套筒，其中該繩係以對於套筒中心線以不同螺旋 繞。加強繩1 0 4延伸至套筒1 0 0之各端。 圖5顯示具有本發明套筒之空氣彈簧之橫剖面圖 端3 0 0係設置在皺褶部件2 0 6與端蓋2 0 5間。捲折 係設置在皺褶部件2 0 8與活塞2 0 7間。可看到的是 與3 0 3並不與壓力室1 0 5相通，藉以消除任何藉由 強繩毛細作用而使壓縮氣體洩漏至外部。所示之捲 域1 0 2亦在活塞表面2 1 5形成捲折結構。 皺褶部件2 0 6與2 0 8可具有任何適合於意欲使用 橫剖面。圖6至1 0係為此種橫剖面之示例。圖6 i 非意欲限制而僅用；描述該等橫剖面。 圖6顯示一皺褶部件之橫剖面圖。皺摺部件4 0 0 環形且具有平坦之橫剖面。 圖7顯示一皺褶部件之橫剖面圖。皺褶部件206 環形且具有沿著内圓周設置之單一溝槽2 1 0。見圖E 部件2 0 6與皺褶部件2 0 8具有實質相同之橫剖面。 圖8顯示一皺褶部件之橫剖面圖。皺褶部件5 0 0 環形且具有沿著内圓周設置之兩溝槽5 0 1與5 0 2。 圖9顯示一皺褶部件之橫剖面圖。皺褶部件6 ◦ 0 環形且具有沿著内圓周設置之四溝槽6 0 1、6 0 2、6 0 3 · 圖1 0顯示一皺褶部件之橫剖面圖。皺褶部件 3 12/發叨說明ttKfllH牛)/93-03/93 丨 00211 中。加 例如在 係揭露 角度纏 。捲折 端3 0 1 端3 0 2 沿著加 折笫區 方式之 L 1 0並 形狀為 形狀為 丨，皺褶 形狀為 形狀為 與 6 0 4 ° 7 0 0之 9 200422539 橫剖面為管狀且形狀為環形。 雖然在此敘述本發明之單一形式，但熟悉此技藝者在不 離開本發明之精神及範疇内當可清楚地對其結構及部件間 之關係作各種變化。又，在此之敘述僅用於示例且本發明 之範圍係僅由考慮先前技藝而敘述之申請專利範圍所限 制。 【圖式簡單說明】 隨附之圖示係併入成為說明書之一部份，其例示本發明 之較佳具體例，並與說明書共同用以解說本發明之原理。 圖1係顯示先前技術之薄壁空氣彈簧套筒之橫剖面圖。 圖2係顯示摺疊至一端蓋之先前技術薄壁空氣彈簧套筒 之橫剖面圖。 圖3係顯示在各端具有一捲折物之套筒之橫剖面圖。 圖4係顯示於圖1中4 - 4的套筒及力口強繩之部分橫剖面 圖5係顯示具有本發明套筒之空氣彈簧之橫剖面圖。 圖6係顯示一 Μ褶部件之橫剖面圖。 圖7係顯示一級褶部件之橫剖面圖。 圖8係顯示一皺褶部件之橫剖面圖。 圖9係顯示一皺褶部件之橫剖面圖。 圖1 0係顯示一皺權部件之橫剖面圖。 (元件符號說明） 1 00 套筒 10 1 端蓋皺褶區域 3丨2/發說明書(fil)件)/93-03/93丨002丨丨 10200422539 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an air spring, and more particularly to an air spring sleeve, wherein the wrinkled area of the sleeve end is folded back to itself to prevent penetration of the reinforcing rope Pressure loss. [Prior art] An air spring generally includes an elastic sleeve with each end connected to a piston, or one end connected to a piston, and the other end being an end cap. Compressed gas, usually air, is contained in an air spring in a pressurized state. The pressure in the air spring directly affects the spring rate of the air spring. The air spring elastic sleeve, or simply a sleeve, is connected to each piston and / or each end cap by a bead or fold. The ball contains a metal band in a sleeve material. The air spring elastic sleeve is compressible and expandable to absorb the suspension of the vehicle. The sleeve is operated to roll on the surface of each piston, and the shape of the surface of the piston will affect the operating characteristics of the air spring. More specifically, under compression impact, rolling lobe is formed on one or both sides of the piston face in the sleeve. Therefore, in this case, the air spring can also be used as a rolled leaf air spring. The performance of the rolled leaf air spring is enhanced by reducing the thickness of the sleeve wall and reducing the modulus of the elastomer used to make the sleeve. However, the disadvantage is that it is difficult to achieve the correct compression of the sleeve wall while maintaining the integrity of the pleated connection, especially rigid hardware. Typically, folding a thin-walled sleeve into a rigid body will result in a wrinkled cut that can cause gas leakage, thus rendering the spring fitting unusable. The representative of this technique is US Patent No. 5, 2 5 3, 8 50 issued to Burkley et al. In 1993, which discloses a sleeve with an end portion, the end 5 312 / Invention Specification (Supplement) / 93-03 / 93100211 200422539 The part is wound with a bead ring and folded in a ring-shaped folding part of at least one end part. What is needed is an air spring having a thin-walled elastic sleeve in the area of the rolled leaves and a roll in the area of the end folds to prevent the loss of air pressure through the reinforcing rope. The present invention can meet this need. [Summary of the Invention] The main aspect of the present invention is to provide an air spring having a thin-walled elastic sleeve in the area of the rolled leaf and a rolled object in the area of the end fold to prevent the rope from passing Loss of air pressure. Other aspects of the invention can be pointed out and clearly achieved by the following description of the invention and accompanying drawings. The present invention includes an air bomb, and more specifically an elastic sleeve having a thin-walled elastic sleeve in the region of the rolled leaf and a rolled object in the region of the end fold to prevent damage during crimping. [Embodiment] Fig. 1 shows a sleeve of a thin-walled air spring in the prior art. Air springs generally include a tubular elastic sleeve (not shown) with one end connected to the piston (end piece) or one end connected to the piston and the other end being an end cap (end piece). The compressed gas, usually air, is contained in the air spring in a pressurized state. The pressure in the air spring directly affects the spring rate of the air spring. The air spring elastic sleeve, or simply the sleeve, is attached or connected to each piston and / or each end cap by a ball or fold. The ball contains a metal band in a sleeve material. The wrinkle is a connecting tool, which uses a metal formed in a radial compression method to capture a sleeve between a metal band and an end cap or a piston. 6 3 12 / Invention Note $ (Supplement) / 93-03 / 93 100211 200422539 band. The air spring elastic sleeve can be compressed and expanded axially to attract the action of suspension, for example, the air spring is connected to it. The operating sleeve is folded on the surface of each piston, and the shape of the piston surface will affect the characteristics of the air spring. More specifically, under the compressive impact, the rolled leaf is formed on the piston face. Therefore, the air spring can also be used as an air spring in this case. The performance of the folded leaf air spring is enhanced by reducing the thickness of the sleeve wall and reducing the modulus of the elastic body of the sleeve. However, the disadvantage is to achieve the correct compression of the sleeve wall, while maintaining the integrity of the pleated connection, a rigid piston or cap. Typically, folding a thin-walled sleeve to a rigid work is likely to produce a wrinkle cut, so that the spring fitting cannot make the sleeve 100 in FIG. 1 contain an end, which means that the end cap wrinkled area piston end wrinkled area 0 3. The volume 1 0 2 which is placed between the ends 10 1 and 10 3 contains a sharp shape as shown or can be described as a uniform shape. The sleeve has a substantially uniform thickness T 1. T 1 is in the range of about 1.22 mm. The sleeve elastomer 106 can include polybutadiene brominated butyl rubber, natural rubber, vaporized butyl rubber, propylene rubber (EPD M), epoxy propane, nitrite or styrene-butadiene rubber (Or a combination of two or more of the above. The sleeve further includes an inner reinforcing rope 104, which is wound in the sleeve body along a long spiral of the sleeve, see Figure 1. Force σ strong rope 1 0 4 May contain nylon ester, polyurethane fiber, steel wire, glass fiber, polyethylene, or polypropylene. A combination of two or more of the above. 3 丨 2 / Description of the Invention (Supplement) / 93-03 / 93100211 The degree of leaf folding and reduction in the sleeve is difficult to use, especially for plugging or capping. The cylindrical shape of the leaf and the leafing area is from mm to ene, polytriethylene SBR), degree L spiral dragon, poly thin, or 200422539 In the example of the sleeve and the air spring of the present invention, the sleeve 1 ο 0 is thickened by being folded or wound to have a thickness T1 in the curled leaf region 102. Therefore, a standard number of wrinkles known in the art can be used to prevent wrinkle cuts in the sleeve. That is, by bending outward each end of the sleeve back to itself, a double-layer thickness can be made at each end and the thin-walled sleeve in the folded leaf region 102 can be rolled, as shown in FIG. 3. Another improvement achieved by the sleeve of the present invention is applicable to an air arrangement, in which one end of the sleeve is disposed in a spring pressure chamber, and the reason for the gap is. For this configuration, one end is provided in the spring pressure chamber. The sleeve end of the prior art must be sealed with a separation step to prevent the loss of air or gas pressure. The reinforcing rope is made of compressed air or a strong rope. wicking) ". The end is folded or rolled back to itself by the rotating sleeve, and then folded normally in pieces, the reinforcing rope end is not exposed to the pressure chamber 105, thereby eliminating the need to use a second seal on the rope end, See Figure 5. Figure 2 shows a cross-sectional view of a prior art thin-walled air spring folded to an end cap. The wrinkled area 1 0 1 of the sleeve 1 0 0 is connected to the end cap 2 0 1 by a wrinkled portion. The wrinkled part 2 0 2 is folded using the techniques and methods used in this technique. The corrugated member 202 includes a metal band. Figure 3 shows a cross-sectional view of a sleeve with a roll at each end 3 0 0 and a roll 3 0 1 are in each end of the sleeve 1 0 0 so that the end 3 3 is long from the sleeve Shafts A-A are made radially outward. Additions are exposed to ends 302 and 303. The circle / 1 is shown in Figure 4-4-4 of the sleeve and the part of the force σ strong rope 3 12 / Invention 丨 丨 pieces) / 93-03 / 93 丨 00211 The wrinkled end holds the sleeve for compression tying or roll maintenance Within the spring distribution, the gas of the reinforcing rope is removed along the air-wrinkle part in the sleeve-added part 2 02 known tool. Fold 3 0 2 and strong rope end cross section 200422539 Figure. The ropes 10 and 4 are spirally adjacent to each other. The vertical arrangement of the strong ropes arranged on the elastic body 10 is well known and disclosed in this art. US Patent No. 4,7 6 3,8 8 3 of Crabtree Medium (1988) A sleeve in which the rope is wound in different spirals to the centerline of the sleeve. The reinforcing ropes 104 extend to each end of the sleeve 100. Fig. 5 shows a cross-sectional view of an air spring having a sleeve according to the present invention. The end 3 0 0 is disposed between the corrugated member 2 06 and the end cover 2 05. The roll-folding system is provided between the corrugated member 208 and the piston 207. It can be seen that it is not in communication with 3 0 3 and the pressure chamber 105, so as to eliminate any leakage of compressed gas to the outside by the capillary action of the strong rope. The roll domain 1 2 shown also forms a rolled structure on the piston surface 2 1 5. The corrugated members 2 0 6 and 2 0 8 may have any cross section suitable for the intended use. Figures 6 to 10 are examples of such cross sections. Figure 6i is not intended to be limiting and is used only; describing these cross sections. Figure 6 shows a cross-sectional view of a corrugated member. The corrugated member 4 0 0 is annular and has a flat cross section. Figure 7 shows a cross-sectional view of a corrugated member. The corrugated member 206 is annular and has a single groove 2 1 0 provided along the inner circumference. See Figure E. Parts 2 06 and corrugated parts 20 8 have substantially the same cross section. Fig. 8 shows a cross-sectional view of a corrugated member. The corrugated member 50 0 0 is annular and has two grooves 50 1 and 50 2 arranged along the inner circumference. Fig. 9 shows a cross-sectional view of a corrugated member. The corrugated member 6 ◦ 0 is annular and has four grooves 6 0 1, 6, 0 2, 6 0 3 arranged along the inner circumference. Fig. 10 shows a cross-sectional view of a corrugated member. Wrinkle part 3 12 / hair lock description ttKfllH cow) / 93-03 / 93 丨 00211. Add, for example, the angle of exposure in the system. Rolled end 3 0 1 End 3 0 2 Along L 1 0 along the fold region, the shape is shape 丨, the shape of the wrinkle is 6 0 4 ° 7 0 0 of 9 200422539 the cross section is tubular and The shape is circular. Although a single form of the present invention is described here, those skilled in the art can clearly make various changes to the structure and the relationship between the components without departing from the spirit and scope of the present invention. In addition, the description herein is for example only and the scope of the present invention is limited only by the scope of patent application described in consideration of the prior art. [Brief description of the drawings] The accompanying drawings are incorporated as part of the description, which illustrate the preferred specific examples of the present invention, and together with the description, are used to explain the principle of the present invention. FIG. 1 is a cross-sectional view showing a thin-walled air spring sleeve of the prior art. Figure 2 is a cross-sectional view showing a prior art thin-walled air spring sleeve folded into an end cap. Figure 3 is a cross-sectional view of a sleeve having a roll of folding material at each end. Fig. 4 is a cross-sectional view of a part of the sleeve and a strong mouth strong rope shown in Figs. Fig. 6 is a cross-sectional view showing an M-pleated member. Fig. 7 is a cross-sectional view showing a primary pleated part. Fig. 8 is a cross-sectional view showing a corrugated member. Fig. 9 is a cross-sectional view showing a corrugated member. FIG. 10 is a cross-sectional view showing a wrinkled weight part. (Description of component symbols) 1 00 Sleeve 10 1 Wrinkle area of end cap 3 丨 2 / Publication instructions (fil) / 93-03 / 93 丨 002 丨 丨 10
200422539 10 2 捲 折 葉 區 域 10 3 端 蓋 皺 褶 1 0 4 加 強 繩 10 5 壓 力 室 10 6 彈 性 體 2 0 1 端 蓋 202 赦 褶 部 件 2 0 5 端 蓋 2 0 6 皺 褶 部 件 207 活 塞 208 皺 褶 部 件 2 10 溝 槽 2 15 活 塞 表 面 3 0 0 捲 折 物 30 1 捲 折 物 302 端 303 端 4 0 0 皺 褶 部 件 500 皺 褶 部 件 50 1 溝 槽 502 溝 槽 60 0 皺 褶 部 件 GUI 溝 槽 602 溝 槽 3丨2/發叨說明谱(補件)/93-03/93丨00211 200422539 603 溝 槽 6 04 溝 槽 700 皺 褶 部 件 T1 厚 度 L 套 筒 長 度 3 12/發丨丨/J說明書(補件)/93-03/93 100211200422539 10 2 Folding leaf area 10 3 End cap fold 1 0 4 Reinforcement rope 10 5 Pressure chamber 10 6 Elastomer 2 0 1 End cap 202 Relief pleated part 2 0 5 End cap 2 0 6 Wrinkle part 207 Piston 208 Wrinkle Pleated part 2 10 groove 2 15 piston surface 3 0 0 roll 30 30 roll 302 end 303 end 4 0 0 pleated part 500 pleated part 50 1 groove 502 groove 60 0 pleated part GUI groove 602 Groove 3 丨 2 / Hair Bunner Spectra (Supplement) / 93-03 / 93 丨 00211 200422539 603 Groove 6 04 Groove 700 Wrinkle part T1 Thickness L Sleeve length 3 12 / hair 丨 丨 J Manual (Supplement) / 93-03 / 93 100211