TWI225128B - Air spring elliptical piston - Google Patents

Air spring elliptical piston Download PDF

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Publication number
TWI225128B
TWI225128B TW092125894A TW92125894A TWI225128B TW I225128 B TWI225128 B TW I225128B TW 092125894 A TW092125894 A TW 092125894A TW 92125894 A TW92125894 A TW 92125894A TW I225128 B TWI225128 B TW I225128B
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Taiwan
Prior art keywords
piston
air cushion
patent application
item
flexible sleeve
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TW092125894A
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Chinese (zh)
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TW200406551A (en
Inventor
Michael L Crabtree
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Gates Corp
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Publication of TWI225128B publication Critical patent/TWI225128B/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
    • F16F9/057—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type characterised by the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

A side load compensating air spring piston having an elliptical cross-section. The side load compensating air spring comprises an air spring sleeve forming a chamber and having a rolling lobe. One end of the sleeve is attached to a tilted end cap for side load compensation. The other end of the sleeve has a rolling lobe engaged with a piston elliptical outer surface. The piston elliptical outer surface is disposed at a 90 angle to an elliptical stress distribution in the sleeve, thereby rendering the stress distribution uniform in the sleeve rolling lobe portion as it rolls on the piston.

Description

1225128 玖、發明說明： 【發明所屬之技術領域】 本發明係有關於一種氣墊，且更特別的，係有 有彳隋圓形外部表面的活塞之氣墊，使導致在一氣 的均勻應力分布。 【先前技術】 一滾動凸角氣墊之壓縮與伸長，導致氣墊套筒 壞。損壞在氣墊使用壽命中累積，直到套筒發生由 在套筒中之應力分布，係套筒耐用性的重要因素 動凸角中之環繞套筒周邊的應力均勻時，可進一 用性。 側邊載荷補償氣墊係應用相關於活塞/壓桿之 氣墊的端蓋。如此導致套筒之應力分布成為橢圓 勻應力分布比較，此係不均勻應力分布。更特別 氣墊之X軸的應力係不同於在γ軸中之應力。進 供較大側邊載荷補償用之較大端蓋傾角，造成較 應力分布及較低对用性的結果。 氣墊套筒之耐用性係被橢圓形或不均勻應力 少。應力分布愈不均勻，耐用性減少愈多。 代表性習知技術係 C r a b t r e e 等人之美國J 5 7 5 2 6 9 2 ( 1 9 9 8 )，其揭示被裝附至一傾斜擋板的室 被裝附至一橫向地安裝之活塞的一空氣套筒之滾 位。 習知技術氣墊導致在套筒中的一橢圓形、不均 布，其縮短操作壽命。 所需要的是一種具有橢圓形橫剖面的側邊載荷 活塞。所需要的是一種具有套筒之側邊載荷補償 滾動凸角中具有實質上均勻之應力分布。本發明 些需求。 312/發明說明書(補件)/92-12/92125 894 關於一具 墊套筒中 之疲勞損 L障為止。 。當在滾 步增強耐 軸線傾斜 形。與均 的，沿著 一步的， 高不均勻 分布所減 各利號碼 部位，及 動凸角部 勻應力分 補償氣墊 氣墊，在 可達到這 5 1225128 【發明内容】 本發明之主要態樣係提供一種具有橢圓形橫剖面的側邊 載荷補償氣墊活塞。 本發明之另一態樣係提供一種具有套筒之側邊載荷補償 氣墊，在滾動凸角中具有實質上均勻之應力分布。 經由下述本發明之詳細說明及所附圖式，將指出且清楚 顯示本發明之其他態樣。 本發明包括一具有橢圓形橫剖面之侧邊載荷補償氣墊。 側邊載荷補償氣墊包括一形成一室且具有一滾動凸角之氣 墊套筒。套筒的一末端被裝附至供側邊載荷補償用之傾斜 端蓋。套筒的另一末端具有一與活塞橢圓外部表面結合之 滾動凸角。活塞橢圓形外部表面係被以9 0 °角度正交於套 筒中之橢圓形應力分布而被裝設，因而在套筒滚動凸角部 位滾動在活塞上時，可使其應力分布均勻。 【實施方式】 圖1 a係習知技術氣墊之橫剖面圖。氣墊1 0 0包括可撓套 筒10。套筒10係氣密的，且形成於一末端處被裝附至一 傾斜的端蓋1 1之室。套筒1 0係被捲邊環1 1 0或此技術之 其他已知之合適機構裝附至端蓋。端蓋11具有圓形平面。 端蓋 1 1係以角度0傾斜，以補償強加在氣墊上之側邊載 荷。角度0係在一端蓋平面與正交至活塞主軸A-A的法線 之間的角度。諸如為螺紋螺絲之緊固件1 2，將氣墊裝附至 一裝配托架（未示於圖）。套筒1 0係由彈性材料以習知方式 建構。套筒1 〇亦包括在彈性材料内螺旋地繞組之塞繩。螺 旋地繞組塞繩之螺旋角不需被限制於特定範圍，以便達成 本發明之益處。 套筒1 0之另一端1 3被裝附至一活塞2 0。套筒1 0係被 捲邊環11 0或此技術其他已知之合適機構裝附至活塞。在 活塞2 0壓縮與彈回時，套筒1 0在活塞2 0之外部表面1 6 6 312/發明說明書(補件)/92-12/92125894 1225128 上形成一滾動凸角1 5。於氣墊操作期間，滾動凸角1 5沿 著活塞2 0之外部表面1 6的長度滾動。 圖1 b係習知技術活塞橫剖面之平面圖。外部表面1 6具 有圓形橫剖面。因為端蓋1 1係傾斜的，且因而不平行於正 交主軸之活塞平面，套筒10實質上具有橢圓形應力分布 1 7。於壓縮行程期間，橢圓形應力分布可顯示為在套筒上 顯現的皺紋，而減少操作壽命。 圖1 c係習知技術氣墊套筒應力分布的平面圖。 圖2 a係本發明活塞之橫剖面圖。活塞1 4 0包括外部表面 1 6 0。其他構件均相同於圖1 a所述。當沿軸線A - A觀看時， 外部表面1 6 0顯示出實質上之橢圓形形狀。外部表面1 6 0 可以為活塞1 4 0之整合部件。外部表面1 6 0亦可包括被裝 附至活塞140的一外部罩蓋161。圖2a示出具有橢圓形外 部表面1 6 0之外部罩蓋1 6 1。 由於前述之傾斜端蓋1 1，套筒1 0具有橢圓形應力分布。 圖2c係一套筒橢圓形應力分布之平面圖。套筒橢圓形應力 分布具有在Y軸上之主軸及在X軸上之短軸。 圖2 b係本發明活塞橫剖面 B - B之平面圖，且套筒均勻 應力分布。外部表面1 6 0之橢圓形橫剖面係大約旋轉9 0 ° 至套筒中之橢圓形應力分布的定向。即為，外部表面 160 具有在 X軸上之主軸及在 Y軸上之短軸。由於滾動凸角 1 5係被形成在且滾動在外部表面1 6 0上，在套筒1 〇中之 橢圓形應力分布實質上成為均句的，或在本情況中，實質 上為圓形應力分布1 7 0。在套筒1 0中之均勻實質上的圓形 應力分布 1 7 0，顯著地增加套筒之耐用性。必須了解，應 力分布可具有圓形以外的形式，而仍可維持於均勻。 外部表面1 6 0之主軸長度與短軸長度之間的比例，係被 選擇以便可在套筒 1 0中建立實質上為均勻，或在本範例 中，建立圓形應力分布。主軸與短軸的長度比例係依據側 7 312/發明說明書(補件)/92-U/92l25894 1225128 邊載荷補償程度而定，即為端蓋傾角0 。在一無側邊載荷 補償之氣墊中，端蓋之傾角0係為零，且比例係 1 . 〇 —即 為圓。在一側邊載荷補償氣墊的情況中，具有大約1 2 °之 端蓋傾角，且比例大約為1 . 2。 以範例之方式且並無限制性，在一測試中，在一具有大 約為 1.08 比例之橢圓形氣墊活塞上測試一側邊載荷補償 氣墊套筒。所測試之套筒的操作壽命，係大約為被裝配在 一具有圓形橫剖面之活塞上的相同活塞之 5倍長操作壽 命。在此一範例中，端蓋傾角0大約為7 ° 。 本發明之氣墊活塞比例係在大約1 . 〇至1 . 5的範圍中， 端蓋傾角0在大約 〇 °至 2 0 °的範圍中。必須了解，在比 例與端蓋傾角之間的關係，並非所有情況均為線狀的。 雖然已於此說明本發明的單一形式，很明顯的，在不偏 離於此所述之本發明的精神與範疇下，習於本技藝者可在 構造與部件關係上做出不同變化。 【圖式簡單說明】 配合且形成本說明之一部份的所附圖式，顯示出本發明 之較佳具體例，且與詳細說明一起用以解釋本發明之原理。 圖1 a係習知技術氣塾之橫剖面圖。 圖1 b係習知技術活塞橫剖面之平面圖。 圖1 c係習知技術氣墊套筒應力分布之平面圖。 圖2 a係本發明之活塞的橫剖面圖。 圖 2 b係本發明之活塞橫剖面B - B的平面圖，且套筒均 勻應力分布。 圖2c係一套筒糖圓形應力分布之平面圖。 (元件符號說明） 10 套筒 1 1 端蓋 12 緊固件 312/發明說明書(補件)/92-12/92125894 1225128 13 另一端 15 滾動凸角 16 外部表面 17 橢圓形應力分布 2 0 活塞 100 氣墊 110 捲邊環 140 活塞 160 橢圓形外部表面 16 1 外部罩蓋 170 圓形應力分佈 Θ 傾角 A-A 活塞主軸 B-B 活塞橫剖面 312/發明說明書(補件)/92-12/92125 8941225128 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an air cushion, and more particularly, to an air cushion with a piston having a circular outer surface, which results in uniform stress distribution in one gas. [Previous Technology] The compression and elongation of a rolling convex air cushion caused the air cushion sleeve to be damaged. The damage accumulates during the service life of the air cushion until the sleeve occurs due to the stress distribution in the sleeve, which is an important factor for the durability of the sleeve. It can be used when the stress around the periphery of the sleeve in the moving lobes is uniform. Side load-compensated air cushions are end caps that are associated with piston / rod air cushions. As a result, the stress distribution of the sleeve becomes an elliptical uniform stress distribution, which is an uneven stress distribution. More specifically, the stress of the X axis of the air cushion is different from the stress in the γ axis. The larger inclination angle of the end caps for the larger side load compensation results in a result of more stress distribution and lower interoperability. The durability of the air cushion sleeve is less oval or uneven. The more uneven the stress distribution, the more the durability decreases. A representative conventional technique is Crabtree et al., U.S. J 5 7 5 2 6 9 2 (19 9 8), which reveals that a chamber attached to an inclined baffle is attached to a laterally mounted piston Rolling position of an air sleeve. Conventional technology air cushions result in an oval, uneven distribution in the sleeve, which shortens the operating life. What is needed is a side load piston with an oval cross section. What is needed is a side load compensation with sleeve having a substantially uniform stress distribution in the rolling lobe. The present invention has some needs. 312 / Invention Specification (Supplement) / 92-12 / 92125 894 Fatigue damage in a cushion sleeve up to L obstacle. . When rolling resistance is enhanced, the axis is oblique. With uniformity, along one step, the highly uneven distribution of the reduced number of profitable parts, and the uniform convexity of the dynamic convex corners, the compensation of the air cushion and air cushion can reach 5 1225128 [Abstract] The main aspect of the present invention is to provide A side load compensation air cushion piston with an elliptical cross section. Another aspect of the present invention is to provide a side load compensation air cushion with a sleeve, which has a substantially uniform stress distribution in a rolling lobe. Other aspects of the invention will be pointed out and clearly shown by the following detailed description of the invention and the accompanying drawings. The invention includes a side load compensation air cushion having an oval cross section. The side load compensation air cushion includes an air cushion sleeve forming a chamber and having a rolling lobe. One end of the sleeve is attached to a tilted end cap for side load compensation. The other end of the sleeve has a rolling lobe that engages the outer surface of the ellipse of the piston. The elliptical outer surface of the piston is installed at an angle of 90 ° orthogonal to the oval stress distribution in the sleeve, so that the stress distribution can be made uniform when the sleeve rolls on the piston at the rolling corner. [Embodiment] FIG. 1a is a cross-sectional view of a conventional air cushion. The air cushion 100 includes a flexible sleeve 10. The sleeve 10 is air-tight and formed in a chamber attached at one end to an inclined end cap 11. The sleeve 10 is attached to the end cap by a crimp ring 1 10 or other suitable mechanism known in the art. The end cap 11 has a circular plane. The end cap 1 1 is tilted at an angle of 0 to compensate the side loads imposed on the air cushion. The angle 0 is the angle between the plane of one end cover and the normal line orthogonal to the main axis A-A of the piston. Fasteners such as threaded screws 12 attach air cushions to a mounting bracket (not shown). The sleeve 10 is constructed in a conventional manner from an elastic material. The sleeve 10 also includes a cord wound spirally in an elastic material. The helix angle of the spiral ground winding cord need not be limited to a specific range in order to achieve the benefits of the present invention. The other end 13 of the sleeve 10 is attached to a piston 20. The sleeve 10 is attached to the piston by a crimp ring 110 or other suitable mechanism known in the art. When the piston 20 is compressed and rebounded, the sleeve 10 forms a rolling lobe 15 on the outer surface of the piston 20 1 6 6 312 / Invention Specification (Supplement) / 92-12 / 92125894 1225128. During air cushion operation, the rolling lobe 15 rolls along the length of the outer surface 16 of the piston 20. Figure 1b is a plan view of a cross section of a conventional piston. The outer surface 16 has a circular cross section. Since the end cap 11 is inclined and therefore not parallel to the plane of the piston orthogonal to the main axis, the sleeve 10 has substantially an oval stress distribution 17. During the compression stroke, the oval stress distribution can be displayed as wrinkles appearing on the sleeve, reducing the operating life. FIG. 1 c is a plan view of the stress distribution of a conventional air cushion sleeve. Figure 2a is a cross-sectional view of a piston of the present invention. The piston 14 0 includes an outer surface 16 0. The other components are the same as described in Fig. 1a. When viewed along the axis A-A, the outer surface 160 shows a substantially elliptical shape. The outer surface 16 0 may be an integrated part of the piston 1 40. The outer surface 160 may also include an outer cover 161 attached to the piston 140. Figure 2a shows an outer cover 16 1 with an oval outer surface 16 0. Due to the aforementioned inclined end cap 11, the sleeve 10 has an oval stress distribution. Figure 2c is a plan view of a sleeve oval stress distribution. The sleeve oval stress distribution has a major axis on the Y axis and a minor axis on the X axis. Fig. 2b is a plan view of the cross section B-B of the piston of the present invention, and the sleeve has a uniform stress distribution. The oval cross section of the outer surface 160 is rotated about 90 ° to the orientation of the oval stress distribution in the sleeve. That is, the outer surface 160 has a major axis on the X axis and a minor axis on the Y axis. Since the rolling lobes 15 are formed and rolled on the external surface 160, the elliptical stress distribution in the sleeve 10 becomes substantially uniform, or in this case, the substantially circular stress Distribution 1 7 0. The uniform and substantially circular stress distribution 170 in the sleeve 10 significantly increases the durability of the sleeve. It must be understood that the stress distribution may have a form other than a circle, but still be maintained uniform. The ratio between the major axis length and the minor axis length of the outer surface 160 is selected so that a substantially uniform stress distribution can be established in the sleeve 10 or, in this example, a circular stress distribution. The length ratio of the main axis to the short axis is determined according to the side 7 312 / Invention Specification (Supplement) / 92-U / 92l25894 1225128 side load compensation degree, which is the end cap inclination 0. In an air cushion without side load compensation, the inclination angle 0 of the end cap is zero, and the ratio is 1.0. That is a circle. In the case of one side load-compensated air cushion, the end cap has an inclination angle of about 12 °, and the ratio is about 1.2. By way of example and without limitation, in one test, a side-load-compensating air-cushion sleeve is tested on an oval air-cushion piston having a ratio of approximately 1.08. The operating life of the sleeves tested was approximately five times the operating life of the same piston assembled on a piston with a circular cross-section. In this example, the end cap inclination angle 0 is approximately 7 °. The air-cushion piston ratio of the present invention is in the range of about 1.0 to 1.5, and the end cap inclination angle 0 is in the range of about 0 ° to 20 °. It is important to understand that the relationship between the ratio and the inclination of the end cap is not linear in all cases. Although the single form of the present invention has been described here, it is obvious that those skilled in the art can make different changes in the structure and the relationship of the components without departing from the spirit and scope of the present invention described herein. [Brief description of the drawings] The accompanying drawings, which form part of the description, show a preferred specific example of the present invention, and together with the detailed description, are used to explain the principle of the present invention. Figure 1a is a cross-sectional view of the discouragement of the conventional technique. Figure 1b is a plan view of a cross section of a conventional piston. Figure 1c is a plan view of the stress distribution of the air cushion sleeve of the conventional technology. Figure 2a is a cross-sectional view of a piston of the present invention. Fig. 2b is a plan view of the cross section B-B of the piston of the present invention, and the sleeve has a uniform stress distribution. Figure 2c is a plan view of the circular stress distribution of a sleeve sugar. (Explanation of component symbols) 10 Sleeve 1 1 End cover 12 Fastener 312 / Invention specification (Supplement) / 92-12 / 92125894 1225128 13 The other end 15 Rolling lobe 16 External surface 17 Elliptical stress distribution 2 0 Piston 100 Air cushion 110 Hemming ring 140 Piston 160 Elliptical outer surface 16 1 Outer cover 170 Circular stress distribution Θ Inclination AA Piston spindle BB Piston cross section 312 / Invention specification (Supplement) / 92-12 / 92125 894

Claims (1)

1225128 拾、申請專利範圍： 1 . 一種氣墊，包括： 一可撓套筒，具有一被裝附至一末端構件之末端及被 裝附至一活塞的另一末端； 該活塞具有一外部表面，該表面具有一橢圓形橫剖面； 且 該可撓套筒形成一滾動凸角，該凸角與該外部表面配合 地結合。 2.如申請專利範圍第1項之氣墊，其中該末端構件係相 關於一活塞主軸而傾斜。 3 .如申請專利範圍第1項之氣墊，其中該外部表面具有 在大約1 . 0至1 . 5範圍中之比例。 4.如申請專利範圍第1項之氣墊，其中一可撓套筒橢圓 形應力分布之主軸，係被以大約9 0 °正交於外部表面橢圓 形橫剖面之主軸而裝設。 5 .如申請專利範圍第4項之氣墊，其中該可撓套筒係與 活塞外部表面結合，使得可撓套筒包括一實質上為圓形之 應力分布。 6 . —種氣墊，包括： 一可撓套筒，具有一被裝附至一末端構件之末端及被裝 附至一活塞的另一末端； 該活塞具有一外部表面，該表面具有一橢圓形橫剖面； 該可撓套筒形成一滾動凸角，該凸角與外部表面配合地 結合；且 一套筒橢圓形應力分布之主軸，係被以大約9 0 °正交於 外部表面橢圓形橫剖面之主軸而裝設。 7 .如申請專利範圍第6項之氣墊，其中該末端構件係相 關於一活塞主軸而傾斜。 8.如申請專利範圍第6項之氣墊，其中該外部表面具有 10 312/發明說明書(補件)/92-12/92125894 1225128 在大約1 . 0至1 . 5範圍中之比例。 9 .如申請專利範圍第6項之氣墊，其中該可撓套筒係與 活塞外部表面結合，使得滾動凸角包括一實質上為圓形之 應力分布。 1 〇. —種氣墊，包括： 一可撓套筒，具有一被裝附至一末端構件之末端及被裝 附至一活塞的另一末端，被裝附至活塞的末端形成一滾動 凸角； 該活塞具有一外部表面，該表面具有一橢圓形橫剖面； 該滾動凸角配合地結合外部表面；且 該可撓套筒包括一實質上為圓形之應力分布。 1 1 .如申請專利範圍第1 0項之氣墊，其中該末端構件係 相關於一活塞主軸而傾斜。 1 2.如申請專利範圍第1 0項之氣墊，其中該外部表面具 有在大約1 . 0至1 . 5範圍中之比例。 13.—種氣墊，包括 一可撓套筒，具有一被裝附至一末端構件之末端及被裝 附至一活塞的另一末端； 該活塞具有一外部表面，該表面具有一橢圓形橫剖面； 且 一套筒橢圓形應力分布之主軸，係被以大約9 0 °正交於 外部表面橢圓形橫剖面之主軸而裝設。 1 4 .如申請專利範圍第1 3項之氣墊，其中該末端構件係 相關於一活塞主軸而傾斜。 1 5 .如申請專利範圍第1 3項之氣墊，其中該外部表面具 有在大約1 . 0至1 . 5範圍中之比例。 1 6 . —種氣塾，包括： 一可撓套筒，具有一被裝附至一末端構件之末端及被裝 附至一活塞的另一末端； 11 312/發明說明書(補件)/92-12/92125沾4 1225128 該活塞具有一外部表面，該表面具有一橢圓形 且 該可撓套筒係與活塞外部表面結合，使得可撓 一實質上為均勻的應力分布。 1 7 .如申請專利範圍第1 6項之氣墊，其中該末 相關於一活塞主軸而傾斜。 1 8 .如申請專利範圍第1 6項之氣墊，其中該外 有在大約1 . 0至1 . 5範圍中之比例。 1 9 .如申請專利範圍第1 6項之氣墊，其中一可 圓形應力分布之主軸，係被以大約9 0 °正交於外 圓形橫剖面之主軸而裝設。 20. —種氣墊，包括： 一可撓套筒，具有一被裝附至一末端構件之末 附至一活塞的另一末端；且 該活塞具有一外部表面，該表面具有一橢圓形 2 1 .如申請專利範圍第2 0項之氣墊，其中該末 相關於一活塞主軸而傾斜。 2 2 .如申請專利範圍第2 0項之氣墊，其中該外 有大約1 . 0至1 . 5範圍中之比例。 23.如申請專利範圍第20項之氣墊，其中一可 圓形應力分布之主軸，係被以大約9 0 °正交於外 圓形橫剖面之主軸而裝設。 24如申請專利範圍第20項之氣墊，其中該可 與活塞外部表面結合，使得可撓套筒包括一實質 之應力分布。 312/發明說明書(補件)/92-12/92125894 橫剖面； 套筒包括 端構件係 部表面具 撓套筒橢 部表面橢 端及被裝 橫剖面。 端構件係 部表面具 撓套筒橢 部表面橢 撓套筒係 上為圓形 121225128 Patent application scope: 1. An air cushion comprising: a flexible sleeve having an end attached to an end member and the other end attached to a piston; the piston having an external surface, The surface has an elliptical cross-section; and the flexible sleeve forms a rolling lobe, and the lobe is cooperatively combined with the outer surface. 2. The air cushion according to item 1 of the patent application scope, wherein the end member is inclined with respect to a piston main shaft. 3. The air cushion according to item 1 of the patent application range, wherein the outer surface has a ratio in the range of about 1.0 to 1.5. 4. For the air cushion of item 1 of the patent application scope, one of the principal axes of the elliptical stress distribution of the flexible sleeve is installed at about 90 ° orthogonal to the principal axis of the elliptical cross section of the external surface. 5. The air cushion according to item 4 of the patent application, wherein the flexible sleeve is combined with the outer surface of the piston so that the flexible sleeve includes a substantially circular stress distribution. 6. An air cushion comprising: a flexible sleeve having an end attached to an end member and the other end attached to a piston; the piston having an outer surface having an oval shape Cross section; the flexible sleeve forms a rolling lobe, which convexly cooperates with the external surface; and a major axis of the sleeve oval stress distribution is orthogonal to the external surface ellipse at approximately 90 ° The main axis of the profile is installed. 7. The air cushion according to item 6 of the patent application, wherein the end member is inclined with respect to a piston main shaft. 8. The air cushion according to item 6 of the patent application scope, wherein the outer surface has a ratio of 10 312 / Invention Specification (Supplement) / 92-12 / 92125894 1225128 in the range of about 1.0 to 1.5. 9. The air cushion according to item 6 of the patent application, wherein the flexible sleeve is combined with the outer surface of the piston so that the rolling lobe includes a substantially circular stress distribution. 1 〇. — An air cushion, comprising: a flexible sleeve having an end attached to an end member and the other end attached to a piston, the end attached to the piston forming a rolling lobe The piston has an external surface with an elliptical cross-section; the rolling lobe cooperates with the external surface; and the flexible sleeve includes a substantially circular stress distribution. 11. The air cushion according to item 10 of the patent application scope, wherein the end member is inclined relative to a main shaft of a piston. 12. The air cushion according to item 10 of the patent application range, wherein the outer surface has a ratio in the range of about 1.0 to 1.5. 13. An air cushion comprising a flexible sleeve having an end attached to an end member and the other end attached to a piston; the piston having an external surface having an oval cross-section Section; and a major axis of the sleeve oval stress distribution is installed at about 90 ° orthogonal to the major axis of the oval cross section of the external surface. 14. The air cushion according to item 13 of the patent application scope, wherein the end member is inclined relative to a piston main shaft. 15. The air cushion according to item 13 of the patent application range, wherein the outer surface has a ratio in the range of about 1.0 to 1.5. 16. A kind of discouragement, comprising: a flexible sleeve having an end attached to an end member and the other end attached to a piston; 11 312 / Description of the Invention (Supplement) / 92- 12/92125 沾 12 1225128 The piston has an external surface, the surface has an oval shape and the flexible sleeve is combined with the external surface of the piston, so that a substantially uniform stress distribution can be flexible. 17. The air cushion according to item 16 of the scope of patent application, wherein the end is inclined in relation to a piston main shaft. 18. The air cushion according to item 16 of the patent application scope, wherein the ratio is in the range of about 1.0 to 1.5. 19. According to the air cushion of item 16 of the patent application scope, one of the main axes capable of circular stress distribution is installed at about 90 ° orthogonal to the main axis of the outer circular cross section. 20. An air cushion comprising: a flexible sleeve having a terminal attached to a distal member attached to the other end of a piston; and the piston having an outer surface having an oval shape 2 1 . For example, the air cushion of the scope of patent application No. 20, wherein the end is inclined in relation to a piston main shaft. 2 2. The air cushion according to item 20 of the scope of patent application, wherein the outside has a ratio in the range of about 1.0 to 1.5. 23. The air cushion according to item 20 of the scope of patent application, wherein a main axis capable of circular stress distribution is installed at about 90 ° orthogonal to the main axis of the outer circular cross section. 24. The air cushion of claim 20, wherein the air cushion can be combined with the outer surface of the piston so that the flexible sleeve includes a substantial stress distribution. 312 / Invention Specification (Supplement) / 92-12 / 92125894 cross section; sleeve includes end member system, part surface with flexible sleeve ellipse, elliptical end surface and installed cross section. The end member system has a flexible sleeve ellipse on the surface and the ellipse on the surface of the flexible sleeve is 12
TW092125894A 2002-09-20 2003-09-19 Air spring elliptical piston TWI225128B (en)

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KR (1) KR20050084569A (en)
AU (1) AU2003275059A1 (en)
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CA (1) CA2498715A1 (en)
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DE1150889B (en) * 1958-04-16 1963-06-27 Continental Gummi Werke Ag Connection of an air spring bellows open at its ends to its fastening body, especially for air suspension systems in vehicles
JPS56143832A (en) * 1980-04-11 1981-11-09 Bridgestone Corp Air cushion
US5129634A (en) * 1986-09-02 1992-07-14 The Goodyear Tire & Rubber Company Airspring with partial restraining sleeve
JP2662218B2 (en) * 1987-04-03 1997-10-08 株式会社ブリヂストン Air spring
US5180144A (en) * 1991-09-03 1993-01-19 General Motors Corporation Air spring module for a damper
CA2065946A1 (en) * 1992-01-22 1993-07-23 James Klassen Constant force gas spring
DE19642024B4 (en) * 1996-10-11 2006-02-09 Bayerische Motoren Werke Ag Rolling bellows gas spring with an outer support part
US5752692A (en) 1997-01-06 1998-05-19 The Gates Corporation Side load compensating airspring strut
DE10024983C1 (en) * 2000-05-19 2001-10-31 Mannesmann Sachs Ag Pneumatic strut with transverse force compensation has pneumatic spring axis coinciding with axis of vibration damper

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AU2003275059A1 (en) 2004-04-08
WO2004027283A3 (en) 2004-05-21
EP1540200A2 (en) 2005-06-15
CA2498715A1 (en) 2004-04-01
JP2006500525A (en) 2006-01-05
TW200406551A (en) 2004-05-01
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KR20050084569A (en) 2005-08-26
WO2004027283A2 (en) 2004-04-01

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