558528 A7 B7 五、發明説明（1 ) 【發明所屬之技術領域】 本發明係，關於利用氣壓的車輛用懸吊裝置。 (請先閲讀背面之注意事項再填寫本頁) 【習知技術】 車輛用懸吊裝置係，避免將因路面崎嶇所產生之車輪 的震動或衝擊直接傳遞至車體，並將車體支承於彈簧上。 當行駛時，路面的凹凸起伏係有不同的變化，懸吊裝置係 ，力求吸收因路面崎嶇所導致的車體上下震動或晃動，並 爲求乘客的安定性，除了彈簧之外大多倂設有緩衝器。 雖然車輛因降低其重心可提高行駛的安定性，所以降 低車體的離地高度有利於提昇其安定性，但另一方面，當 路面的崎嶇變化大時，提高車體的離地高度，有助於行駛 性的提昇。隨著這樣的需求，便開發出如第1 0圖所示的 車身高度調整型懸吊裝置。 經濟部智慧財產局員工消費合作社印製 車身高度調整型懸吊裝置係，透過上支架1 0 1及下 支架1 0 2，將關節1 0 3鉸接於車體下方基礎部1 〇 〇 處，並可自由轉動地將車輪1 0 4支承於關節1 〇 3。上 支架1 0 1與車體上方基礎部1 0 5之間係，透過相互倂 設之具有緩衝器1 〇 6的線圈彈簧1 0 7、及作爲氣壓彈 簧的氣壓缸1 0 8形成連結。 氣壓缸1 0 8處係，如第1 1圖所示地，透過電磁閥 1 〇 9與充塡有高壓氣體的儲氣槽1 1 0連接，藉由控制 電磁閥1 0 9，將高壓氣體由儲氣槽1 1 0朝氣壓缸 1 0 8供應，並由氣壓缸1 0 8將高壓氣體朝大氣排放。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4 - 558528 A7 __B7 __ 五、發明説明（2 ) 藉由電磁閥1 0 9的前述動作來增加或減低氣壓缸1 〇 8 內的氣壓，以調整車身高度。 (請先閲讀背面之注意事項再填寫本覓) 【發明欲解決的課題】 傳統氣壓缸1 0 8係，利用被密封於氣壓缸1 〇 8內 之氣體室的高壓氣體作爲氣壓彈簧以發揮其機能，故氣壓 缸1 0 8得承載荷重係，由氣體室的容積或密封氣體之壓 力等的各種條件所決定。在這些條件中，氣體室內的氣體 壓力係，爲了確保柔軟的懸吊機能必須保持在指定的範圍 內，故氣壓缸1 0 8的承載荷重，實際上係藉由其本身的 尺寸作大致上的決定。 於是，一旦提高氣壓缸的承載荷重，將無法避免氣壓 缸的大型化，但在空間被限制的車輪周圍，卻僅能設置承 載荷重較小的氣壓缸。 因此，本發明欲解決的課題係，提供一種可避免懸吊 裝置大型化，並可謀求承載荷重增大的懸吊裝置。 經濟部智慧財產局員工消費合作社印製 【用以解決課題之手段】 本發明的懸吊裝置係，具備：由上蓋使筒狀體的一方 端部形成封閉狀的外缸；和被配置成由底蓋封閉外徑小於 前述筒狀體內徑之筒狀體的下端部，再由外缸用活塞在上 端部形成封閉狀，使前述外缸用活塞氣密地滑動於前述外 缸之內周面的內缸；和被配置成氣密狀並可滑動地貫通前 述外缸用活塞，且其基端部固定於前述上蓋的活塞軸；及 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇X297公釐） -5- 經濟部智慧財產局員工消費合作社印製 558528 A7 B7 五、發明説明（3 ) 被配置成固定於前述活塞軸，並可滑動於前述內缸之內周 面上的內缸用活塞。 藉由形成這樣的結構，將外缸及內缸配置成套管狀’ 並分別在外缸用活塞與上蓋間、及內缸用活塞與下蓋間藉 由外缸與內缸之相對地往復滑動形成可擴大/收縮的氣密 狀氣體室，因利用被密封於前述2個氣體室內的氣體壓力 得以發揮懸吊的機能，故可避免懸吊裝置大型化’並可謀 求承載荷重增大。 藉由形成於前述活塞軸內部之用來連通由前述底蓋與 前述內缸用活塞所分隔的下部氣體室’及由前述上蓋與前 述外缸用活塞所分隔之上部氣體室的氣體流路’使上部氣 體室內的氣壓與下部氣體室內的氣壓經常地保持相同’因 爲所產生的荷重係平均地由上部及下部2個氣體室內的空 氣所分擔，可防止因荷重集中於其中一個氣體室所導致的 弊端，以獲的平穩的懸吊機能。 藉由具有透過第1節流孔機構而連通於前述氣體流路 的備用槽，當荷重作用於外缸及內缸使上部氣體室及下部 氣體室內的氣體被壓縮時，該氣體係透過第1節流孔機構 流入備用槽內，反之，當荷重降低或被解除使上部氣體室 及下部氣體室內的氣壓減輕時，備用槽內的氣體則透過第 1節流孔機構流入上部氣體室及下部氣體室內。 整體而言，這些氣體因爲被密封於上部氣體室、下部 氣體室及備用槽內，可發揮彈簧的機能，並因爲當流動於 上、下部氣體室與備用槽之間的氣體通過第1節流孔機構 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 線秦 -6- 558528 Α7 Β7 五、發明説明（4 ) 時被壓縮產生能量的損失，故能發揮如同緩衝器般的機會έ 。又，因爲可藉由將氣體注入、排出備用槽來增減備用槽 內的氣壓，使上部氣體室及下部氣體室的容積產生變化， 進而調整車身高度。 該備用槽內氣壓的增減，雖然僅於必要時可藉由將另 外準備的氣體儲槽連接至備用槽進行調整，但倘若預先備 有連通備用槽並具有可調節備用槽內壓之開關閥的儲備槽 時，可根據需要來開啓/關閉該開關閥，將氣體由儲存槽 供給至備用槽內，或排出備用槽內的空氣，使車身高度的 調整變的容易。 而，節流孔機構係，以具備可調節由氣體室流出的氣 體之流量機能者較佳。根據具備這樣的機能，可藉由設定 當氣體室內的空氣被壓縮而朝外部流出時的衰減量，來調 整緩衝機能。 又，節流孔機構係，以備有數個內徑不同的流路，並 可藉由從這些流路中選擇任意的流路來調整氣體流量者爲 宜。藉此，只需預先選擇對應於已設定流量的數個流路， 便可調節由氣體室流向備用槽之氣體的流量，使衰減量的 調整變的容易。 藉由設置連通由上述內缸用活塞與外缸用活塞所區隔 的中間氣體室、及大氣的第2節流孔機構，當對外缸及內 缸加壓進而壓縮中間氣體室內的氣體時，透過第2節流孔 可將該氣體朝大氣中排放，反之，當負擔降低或解除使中 間氣體室的氣壓下降時，形成使大氣中的氣體透過第2節 本紙張尺度適用中國國家標準（CNS ) Α4規格（21〇Χ297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 558528 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（5 ) 流孔機構朝中間氣體室回流。 如此一來，流動於中間氣體室與大氣之間的氣體係， 因通過第2節流孔機構時遭壓縮以致產生能量的損失，可 更進一步提昇緩衝的機能，並提高減緩衝擊荷重的機能。 【發明的實施形態】 以下，·根據圖面來說明本發明的實施形態。第1圖係 顯示實施形態之懸吊裝置的槪略結構圖，第2圖係第1圖 所顯示之氣體懸吊裝置本體的縱剖面圖，第3圖係第2圖 所顯示之氣體懸吊裝置本體的局部放大圖，第4圖（a ) 係流路切換閥的平面圖，第4圖（b )係前述流路切換閥 的側面圖，第4圖（c )係前述流路切換閥的底面圖，第 5圖則爲第2圖所顯示之氣體懸吊裝置本體的局部放大圖 0 本實施形態的懸吊裝置係如第1圖所示地，具備：由 可使車輪自由迴轉的關節、上肘及下肘所構成的車輪側構 件L ;和懸架車體側構件U的氣體懸吊裝置本體1 〇 ;和 透過後述之第1節流孔機構而與氣體懸吊裝置本體連通的 備用槽3;及透過壓力調節閥4連通於備用槽3之用來調 整內壓的儲存槽5。氣體懸吊裝置本體1 0係，藉由後述 之設於外缸1 3上端部的上托板2 2連結於車輪側構件U ，並藉由設置於內缸1 6下端部的連桿2 3連結於車輪側 構件L。 氣體懸吊裝置本體1 0係，如第2圖所示地，具備； 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁)558528 A7 B7 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a suspension device for a vehicle using air pressure. (Please read the precautions on the back before filling this page.) [Knowledge technology] Vehicle suspension devices avoid direct transmission of wheel vibrations or shocks caused by rough roads to the vehicle body, and support the vehicle body on On the spring. When driving, the bumps and undulations of the road surface have different changes, and the suspension system is designed to absorb the up and down vibration or shaking of the car body caused by the rugged road surface, and for the stability of passengers, most of them are provided with aside from spring buffer. Although lowering the center of gravity of the vehicle can improve the stability of driving, so reducing the height of the vehicle's ground clearance is conducive to improving its stability. On the other hand, when the rugged road surface changes greatly, increasing the height of the vehicle's ground clearance, Helps improve driving performance. In response to such a demand, a body height adjustment type suspension device as shown in Fig. 10 has been developed. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed a body height adjustment type suspension device system. Through the upper bracket 101 and the lower bracket 102, the joints 103 were hinged to the base portion 100 below the vehicle body, and The wheel 104 is rotatably supported on the joint 103. The upper bracket 101 and the base portion 105 above the vehicle body are connected to each other through a coil spring 107 having a bumper 106 and a pneumatic cylinder 108 as a pneumatic spring. The pneumatic cylinder is located at 108, as shown in Fig. 11, and is connected to the gas storage tank 1 1 0 filled with high-pressure gas through the solenoid valve 10, and the high-pressure gas is controlled by controlling the solenoid valve 10 9. It is supplied from the gas storage tank 1 10 to the pneumatic cylinder 108, and the high pressure gas is discharged to the atmosphere by the pneumatic cylinder 108. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -4-558528 A7 __B7 __ V. Description of the invention (2) Increase or decrease the air pressure cylinder by the aforementioned action of the solenoid valve 1 0 9 The air pressure inside to adjust the height of the car. (Please read the precautions on the back before filling in this search.) [Problems to be solved by the invention] The conventional pneumatic cylinder 108 series uses the high-pressure gas sealed in the gas chamber in the pneumatic cylinder 108 as a gas spring to exert its advantages. Function, so the pneumatic cylinder 108 can have a load bearing system, which is determined by various conditions such as the volume of the gas chamber or the pressure of the sealed gas. Under these conditions, the gas pressure in the gas chamber must be kept within the specified range in order to ensure the soft suspension performance. Therefore, the bearing capacity of the pneumatic cylinder 108 is actually approximately the same based on its size. Decide. Therefore, once the bearing capacity of a pneumatic cylinder is increased, the size of the pneumatic cylinder cannot be avoided. However, only a cylinder having a small bearing capacity can be installed around a wheel with limited space. Therefore, the problem to be solved by the present invention is to provide a suspension device that can avoid an increase in the size of the suspension device and can increase the load bearing capacity. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs [Means to Solve the Problem] The suspension device of the present invention includes: an outer cylinder having a closed end formed by one end of the cylindrical body by an upper cover; The bottom cover closes the lower end portion of the cylindrical body with an outer diameter smaller than the cylindrical inner diameter, and then the outer cylinder piston forms a closed shape at the upper end portion, so that the outer cylinder piston slides airtightly on the inner peripheral surface of the outer cylinder. An inner cylinder; and a piston shaft that is air-tightly and slidably passes through the piston for the outer cylinder, and whose base end is fixed to the upper cover; and this paper size is applicable to the Chinese National Standard (CNS) A4 specification (21 〇X297mm) -5- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy 558528 A7 B7 V. Description of the invention (3) It is configured to be fixed to the aforementioned piston shaft and can slide on the inner peripheral surface of the aforementioned inner cylinder Piston for inner cylinder. By forming such a structure, the outer cylinder and the inner cylinder are arranged in a complete set of tubes, and can be formed by sliding back and forth between the outer cylinder and the inner cylinder between the outer cylinder piston and the upper cover and between the inner cylinder piston and the lower cover. The enlarged / contracted gas-tight gas chamber uses the gas pressure sealed in the aforementioned two gas chambers to exert the suspension function. Therefore, the size of the suspension device can be avoided, and the load-bearing weight can be increased. A gas flow path formed in the piston shaft to communicate with the lower gas chamber 'partitioned by the bottom cover and the piston for the inner cylinder and the upper gas chamber partitioned by the upper cover and the piston for the outer cylinder' Keep the air pressure in the upper gas chamber and the air pressure in the lower gas chamber often the same. 'Because the load generated is evenly shared by the air in the upper and lower gas chambers, which can prevent the load from being concentrated in one of the gas chambers. Disadvantages to get smooth suspension performance. By having a reserve tank communicating with the gas flow path through the first orifice mechanism, when a load acts on the outer cylinder and the inner cylinder to compress the gas in the upper gas chamber and the lower gas chamber, the gas system passes through the first gas chamber. The orifice mechanism flows into the spare tank. Conversely, when the load is reduced or released to reduce the air pressure in the upper gas chamber and the lower gas chamber, the gas in the spare tank flows into the upper gas chamber and the lower gas through the first orifice mechanism. indoor. As a whole, these gases can be used as springs because they are sealed in the upper gas chamber, the lower gas chamber, and the backup tank, and because the gas flowing between the upper and lower gas chambers and the backup tank passes through the first throttling The paper size of the hole mechanism is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling in this page) Threading Qin-6- 558528 Α7 Β7 V. Description of the invention (4) Compression results in a loss of energy, so it can be used as a buffer. In addition, because the gas in the reserve tank can be increased or decreased by injecting and discharging gas into and out of the reserve tank, the volume of the upper gas chamber and the lower gas chamber can be changed, and the height of the vehicle body can be adjusted. The increase and decrease of the pressure in the reserve tank can be adjusted only by connecting a separately prepared gas storage tank to the reserve tank if necessary. However, if a switch valve communicating with the reserve tank and having an adjustable internal pressure of the reserve tank is provided in advance, In the case of a reserve tank, the on-off valve can be opened / closed as needed to supply gas from the storage tank to the reserve tank, or exhaust the air in the reserve tank, making it easy to adjust the height of the vehicle body. It is preferable that the orifice mechanism is provided with a function capable of adjusting the flow rate of the gas flowing out of the gas chamber. With such a function, the buffer function can be adjusted by setting the amount of attenuation when the air in the gas chamber is compressed and flows out to the outside. Further, the orifice mechanism is preferably provided with a plurality of flow paths having different inner diameters, and it is preferable to select an arbitrary flow path from these flow paths to adjust the gas flow rate. Thereby, the flow rate of the gas flowing from the gas chamber to the reserve tank can be adjusted only by selecting a plurality of flow paths corresponding to the set flow rate in advance, and the adjustment of the attenuation amount becomes easy. By providing a second orifice mechanism that communicates the intermediate gas chamber separated by the inner cylinder piston and the outer cylinder piston, and the atmosphere, when the outer cylinder and the inner cylinder are pressurized to compress the gas in the intermediate gas chamber, The gas can be discharged into the atmosphere through the second orifice. Conversely, when the burden is reduced or the pressure in the intermediate gas chamber is reduced, the gas in the atmosphere can be transmitted through the second section. This paper applies Chinese national standards (CNS) ) Α4 specification (21 × 297 mm) (Please read the notes on the back before filling out this page) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by the Consumer Cooperative 558528 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by the Consumer Cooperative of A7 B7 V. Invention Explanation (5) The orifice mechanism flows back to the intermediate gas chamber. In this way, the gas system flowing between the intermediate gas chamber and the atmosphere is compressed when passing through the second orifice mechanism, resulting in a loss of energy, which can further improve the buffering function and the function of reducing the impact load. [Embodiments of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings. Fig. 1 is a schematic structural diagram showing a suspension device of an embodiment, Fig. 2 is a longitudinal sectional view of a gas suspension device body shown in Fig. 1, and Fig. 3 is a gas suspension shown in Fig. 2 Partial enlarged view of the device body, FIG. 4 (a) is a plan view of the flow path switching valve, FIG. 4 (b) is a side view of the flow path switching valve, and FIG. 4 (c) is a view of the flow path switching valve. The bottom view, and FIG. 5 is a partially enlarged view of the gas suspension device body shown in FIG. 0. The suspension device of this embodiment is provided with a joint capable of turning the wheels freely as shown in FIG. 1 Wheel-side member L consisting of upper, lower and lower elbows; gas suspension device body 10 of suspension body-side member U; and a spare that communicates with the gas suspension device body through a first orifice mechanism described later A tank 3; and a storage tank 5 communicating with the spare tank 3 through a pressure regulating valve 4 for regulating the internal pressure. The gas suspension device main body 10 is connected to the wheel-side member U by an upper support plate 2 2 provided on the upper end portion of the outer cylinder 1 3 described later, and by a connecting rod 2 3 provided on the lower end portion of the inner cylinder 16. It is connected to the wheel-side member L. The 10 series of gas suspension device body, as shown in Figure 2, is provided; This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page)
-8 - 558528 A7 B7 五、發明説明（6) (請先閲讀背面之注意事項再填寫本頁) 由蓋帽1 1及上蓋1 2封閉圓筒體上端部而成的外缸1 3 ;和被配置成由下蓋1 4封閉外徑小於外缸1 3內徑之圓 筒體的下端部，由外缸用活塞1 5封閉上端，並將外缸用 活塞1 5配置成氣密狀地滑動於外缸1 3之內面1 3 a的 內缸1 6 ;和被配置成可自由滑動並氣密地貫穿外缸用活 塞1 5，且上端部1 7 a固定於上蓋1 2的活塞軸1 7 ; 及被配置呈周定於活塞軸1 7的下端部1 7 b，並可滑動 於內缸1 6之內周面1 6 a的內缸用活塞1 8。 又，使由下蓋1 4與內缸用活塞1 8所分隔的下部氣 體室1 9，及由上蓋1 2與外缸用活塞1 5所分隔之上部 氣體室2 0形成連通的流路2 1係，形成於活塞軸1 7的 內部，且流路2 1的上端部係透過第1節流孔機構連結於 備用槽3。除此之外，還設有使由內筒用活塞1 8及外筒 用活塞1 5所分隔的中間氣體室2 9與大氣連通的第2節 流孔機構3 0。 第1節流孔機構1係如第3圖所示地，備有由流路 2 1處朝上方形成直線狀的流路3 1、2 5、及通過流路 經濟部智慧財產局員工消費合作社印製 3 1側的流路3 3，並在流路3 1的途中，設有由：彈簧 3 4、和小於流路3 1之內徑的彈簧支承部3 4 a、及由 彈簧3 4朝流路2 1側彈壓的單向閥球3 5所構成的單向 閥3 6 °又’在單向閥3 6及流路2 1之間係，使流路 3 1縮徑形成漏斗狀後，形成內徑較流路3 1更小的流路 3 1 a 〇 流路3 3係，由單向閥3 6靠近流路2 1的部分處朝 本紙張尺度適用中國國家標準（CNS)八4胁（21〇χ297公董） -9 - 558528 A7 B7 五、發明説明（7 ) 備用槽3側，側繞過單向閥3 6而形成。在單向閥3 6的 上方係，配置著使流路3 3與彈簧支承部3 4 a合流的流 路切換閥2 4。 流路切換閥2 4係如第4圖所示地，備有··貫通其中 心上下且連通於彈簧支承部3 4 a的流路2 5、及匯流於 流路2 5之內徑各不相同的六條流路2 6 a、2 6 b、 26c、26d、26e、26f。流路 26a 〜26f 的內徑係，無論哪一個皆形成小於流路3 3的內徑。而， 流路切換閥2 4的頭部係形成六角螺帽狀的標度盤，在該 六角形螺帽狀之六個面的對應位置上則分別形成著2 6 a 〜2 6 f的開口部。 因藉由把流路2 5做爲中心令流路切換閥2 4迴轉， 使六條流路2 6 a〜2 6 f當中的任意一條與流路3 3形 成連接之故，可藉由使頭部2 7迴轉後選擇任意流路的方 式，來調節通過流路3 3之氣體的流量。因頭部2 7外周 的六個面上，係分別標示著代表六個流路2 6 a〜2 6 f 之內徑的記號2 8，故可藉由令該記號2 8朝流路3 3側 配合，輕易地由六條流路2 6 a〜2 6 f中選擇任意的流 路。 第2節流孔機構3 0係如第5圖所示地’係連通中間 氣體室2 9及大氣，該第2節流孔機，構,3 0係由：形成於 外缸1 3下端部附近的通氣孔3 7 ;和形成於內缸1 6上 端部附近的通氣孔3 8 ;及藉由將氣密封材3 9組裝於外 缸1 3下端，而形成於外缸1 3及內缸1 6之間隙內的流 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇Χ297公嫠） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -10- 558528 A7 B7 五、發明説明（8) 路4 0。 當車輛行駛時，在懸吊裝置的一般使用狀態下，封閉 壓力調節閥4，由儲存槽5所供應的氣體係形成被密封於 備用槽3及上部氣體室2 0、下部氣體室1 9內的狀態。 在這樣的狀態下，氣體係因爲被密封於備用槽3及上部氣 體室2 0、下部氣體室1 9內之故，面對作用於氣體懸吊 裝置本體10的荷重可發揮氣壓彈簧的機能。 此時，因爲藉由被密封於上部氣體室2 0及下部氣體 室1 9之2個氣體室內的氣壓發揮氣壓彈簧的機能，故其 耐重量係，形成傳統氣壓彈簧的1 · 5〜2倍。因此，可 避免裝置的大型化，並謀求耐重量的提昇。 又，因下部氣體室1 9與上部氣體室2 0係由活塞軸 1 7內的流路2 1連通’故上部氣體室2 0內的氣壓與下 部氣體室1 9內的氣壓可長保相同的壓力，且因所承載的 荷重係平均地由上部氣體室2 0及下部氣體室19內的氣 壓所支承’故町避免何重集中於其中一*個氣體室的缺點， 並獲的平順的懸吊機能。 接下來參考第6〜9圖，就懸吊裝置的動作狀態進行 說明。第6圖係’顯示第1途中氣體懸吊裝置本體之壓縮 動作狀態的縱剖面圖’第7圖係第6圖的局部剖面圖，第 8圖係第1圖中氣體懸吊裝置本體之伸展動作的縱剖面說 明圖，第9圖係第8圖的局部放大圖。 當車輛行駛中的上下震動及滾動的負荷作用於氣體懸 吊裝置本體1 〇時’如第6圖所示地，外缸用活塞1 5係 ^紙張尺度適用中國國家標準^奶丨从規格“⑴/撕公釐） " -11 - (請先閲讀背面之注意事項再填寫本頁) 、tr 經濟部智慧財產局員工消費合作社印製 558528 A7 ____B7 五、發明説明（9) 由內缸用活塞18處朝延伸方向移動以壓縮下部氣體室 1 9及上部氣體室2 0內的氣體，該氣體係經由流路2 1 及第1節流孔機構1等流入備用槽3內。此時，如第7圖 所示地，利用由流路2 1處流入的氣流使單向閥球3 5反 向彈壓彈簧3 4而上昇’且因單向閥3 6形成開啓狀態， 故氣流不會通過內徑小的流路2 6 a，並在通過流路3 1 a、3 1及彈簧支承部3 4 a後，經由流路2 5流入備用 槽3。因流路3 1 a的內徑小於流路2 1的內徑之故，當 氣流由流路2 1流入流路3 1 a之際，因氣流被壓縮使流 速產生劇烈的變化，以致產生流動能量的耗損，故緩衝器 的機能得以發揮。 此外，當下部氣體式1 9及上部氣體室2 0內的氣體 因作用於氣體懸吊裝置本體1 〇的荷重而形成壓縮狀態時 ，使中間氣體室2 9的容積增大而壓力降低，使得大氣中 的空氣透過由通氣孔3 7、3 8及流路4 0所構成的第2 節流孔機構3 0流入中間氣體室2 9，當氣流通過第2節 流孔機構3 0之際，因氣流被壓縮使流速產生劇烈的變化 ，以致產生流動能量的耗損，故緩衝器的機能得以發揮。 另一方面，當作用於氣體懸吊裝置本體1 0的荷重減 輕或消除時，如第8圖所示地，外缸用活塞1 5係朝接近 內缸用活塞1 8的方向移動使得下部氣體室1 9及上部氣 體室2 0內部的氣壓下降，並使備用槽3內的氣體經由第 1節流孔機構1流入下部氣體室1 9及上部氣體室2 0。 此時，如第9圖所示地，因單向閥球3 5被彈簧3 4彈壓 I紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）~嫌 ' -12 - (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 558528 A7 B7 五、發明説明（1〇) 而關閉單向閥3 6，當氣流通過流路2 5後，由流路切換 閥2 4的流路2 6 a流向側繞過流路3 1的流路3 3 ’並 經由流路2 1流入上部氣體室2 0及下部氣體室1 9 °因 流路2 6 a〜2 6 f的內徑皆小於流路2 5的內徑’故當 氣流由流路2 5流向流路2 6 a等之際’因氣流被壓縮使 流速產生劇烈的變化’以致產生流動能量的耗損’故緩衝 器的機能得以發揮。 緩衝機能的調整係，可在流路切換閥2 4處藉由選擇 流路2 6 a〜2 6 f中的任何一個來進行。而，當荷重減 輕或解除使得外缸用活塞1 5朝靠近內缸用活塞1 8的方 向移動時，使中間氣體室2 9的容積減少而壓力增加’使 得內部的空氣透過由通氣孔3 7、3 8及流路4 0所構成 的第2節流孔機構3 0排放至大氣中’當氣流通過第2節 流孔機構3 0之際，因產生流動能量的耗損，故緩衝器的 機能得以發揮。 此外，在本實施形態的懸吊裝，置中，可藉由壓力調節 閥4將被充塡於儲存槽5內的氣體供給至備用槽3內增加 其內壓，或使備用槽3內的氣體朝大氣排放以降低其內壓 。因此，藉由增加/減少備用槽3的內壓，並增加/減少 與備用槽3連通之上部氣體室2 0及下部氣體室1 9的內 壓，可調整外缸用活塞1 5及內缸用活塞1 8的靜止位置 ，藉此，可以執行車身高度的調整。 【發明的效果】 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -13- 558528 A7 _ B7__ 五、發明説明（11) 根據本發明，可獲得以下的功效。 (請先閱讀背面之注意事項再填寫本頁) (1 )本發明之氣體懸吊裝置係，因具備：由上蓋使 筒狀體的一方端部形成封閉狀的外缸；和被配置成由底蓋 封閉外徑小於前述筒狀體內徑之筒狀體的基端部，再由外 缸用活塞在另一端形成封閉狀，使前述外缸用活塞氣密地 滑動於前述外缸內周面的內缸；和被配置成氣密狀並可滑 動地貫通前述外缸用活塞，且其基端部固定於前述上蓋的 活塞軸；及被配置成固定於前述活塞軸，並可滑動於前述 內缸內周面上的內缸用活塞，故可將外缸及內缸配置成套 管狀，並分別在外缸用活塞與上蓋間、及內缸用活塞與下 蓋間藉由外缸與內缸之相對地往復滑動形成可擴大/收縮 的氣密狀氣體室，且因利用被密封於前述2個氣體室內的 氣體壓力得以發揮懸吊的機能，故可避免懸吊裝置大型化 ，並可謀求承載荷重增大。 經濟部智慧財產局員工消費合作社印製 (2)藉由在前述活塞軸內部形成有用來連通由前述 底蓋與前述內缸用活塞所分隔的下部氣體室，及由前述上 蓋與前述外缸用活塞所分隔之上部氣體室的氣體流路，使 得上部氣體室內的氣壓與下部氣體室內的氣壓可長保相同 的壓力，且因所承載的荷重係平均地由上部氣體室及下部 氣體室內的氣壓所支承，故可避免荷重集中於其中一個氣 體室的缺點，並獲的平順的懸吊機能。 (3 )藉由具有透過第1節流孔機構而連通於前述氣 體流路的備用槽，因爲氣體被密封於上部氣體室、下部氣 體室及備用槽內，可發揮彈簧的機能，並因爲當流動於上 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -14- 558528 A7 B7 _*_ 五、發明説明（12) 、下部氣體室與備用槽之間的氣體通過第1節流孔機構時 被壓縮產生能量的損失，故能發揮如同緩衝器般的機能。 又，因爲可藉由將氣體注入、排出備用槽來增減備用槽內 的氣壓，使上部氣體室及下部氣體室的容積產生變化，進 而調整車身高度。 (4 )藉由設置連通由上述內缸用活塞與外缸用活塞 所區隔的中間氣體室、及大氣的第2節流孔機構，使流動 於中間氣體室與大氣之間的氣體係，因通過第2節流孔機 構時遭壓縮以致產生能量的損失，可更進一步提昇緩衝的 機能，並提高減緩衝擊荷重的機能。 【圖面之簡單說明】 第1圖 ：顯示實施形態之懸吊裝置的槪略結構圖。 第2圖：第1圖中所顯示之氣體懸吊裝置本體的縱剖 面圖。 第3圖 ：第2圖中所顯示之氣體懸吊裝置本體的局部 放大圖。 第4圖 ：係流路切換閥的平面圖。 係前述流路切換閥的側面圖。 係前述流路切換閥的底面圖。 第5圖 ：第2圖中所顯示之氣體懸吊裝置本體的局部 放大圖。 第6圖：第1圖中所顯示的氣體懸吊裝置本體之壓縮 動作的縱剖面說明圖。 ^紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 一~~ -15- (請先閲讀背面之注意事項再填寫本頁) 訂 線·- 經濟部智慧財產局員工消費合作社印製 558528 A7 B7 五、發明説明（13) 第7圖 ：第6圖中所顯示之氣體懸吊裝置本體的局部 放大圖。 第8圖 ：第1圖中所顯示的氣體懸吊裝置本體之伸展 動作的縱剖面說明圖。 第9圖 ：第8圖中所顯示之氣體懸吊裝置本體的局部 放大圖。 第1 0圖·傳統車身高度調節式懸吊裝置的槪略結構圖 ! 〇 第1 1圖 第1 0圖中所顯示之車身高度調節式懸吊裝 : 置的氣體系統圖。 【圖號說明】 1 3 4 5 10 11 12 13 14 15 16 17 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 :第1節流孔機構 :備用槽 :壓力調節閥 :儲存槽 :氣體懸吊裝置本體 :蓋帽 :上蓋 :外缸 :下蓋 :外缸用活塞 :內缸 :活塞軸 經濟部智慧財產局員工消費合作社印製 -16- 558528 A7 B7 五、發明説明（14) 經濟部智慧財產局員工消費合作社印製 17a :上端部 17b :下端部 18 :內缸用活塞 19 :下部氣體室 20 :上部氣體室 1 13 :後輪鎖定機構 21、25、31、31a、33、26a〜26f、40 :流路 22 :上托板 23 :連桿 24 :流路切換閥 27 :頭部 28 :記號 29 :中間氣體室 30 :第2節流孔機構 34 :弓早黃 34a :彈簧支承部 35 :單向閥球 36 :單向閥 37、38 :通氣孔 39 :氣密封材 T :車輪 U :車體側構件 L :車輪側構件 (請先閱讀背面之注意事項再填寫本頁) 訂 -線- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 17--8-558528 A7 B7 V. Description of the invention (6) (Please read the precautions on the back before filling in this page) The outer cylinder 1 3 is formed by the cap 1 1 and the upper cover 12 closing the upper end of the cylinder; and The lower end of the cylindrical body whose outer diameter is smaller than the inner diameter of the outer cylinder 13 is closed by the lower cover 14 and the upper end is closed by the piston 15 for the outer cylinder, and the piston 15 for the outer cylinder is arranged to slide in an airtight manner. An inner cylinder 16 located on the inner surface 1 3 a of the outer cylinder 13; and a piston shaft 15 configured to be slidably and air-tightly penetrate the outer cylinder piston 15, and an upper end portion 17 a is fixed to a piston shaft of the upper cover 12 17; and an inner cylinder piston 18 that is arranged around the lower end portion 17b of the piston shaft 17 and can slide on the inner peripheral surface 16a of the inner cylinder 16. The lower gas chamber 19 separated by the lower cover 14 and the inner cylinder piston 18 and the upper gas chamber 20 separated by the upper cover 12 and the outer cylinder piston 15 form a communication channel 2 The first series is formed inside the piston shaft 17 and the upper end of the flow path 21 is connected to the spare groove 3 through a first orifice mechanism. In addition, a second orifice mechanism 30 is provided to communicate the intermediate gas chamber 29 separated by the inner cylinder piston 18 and the outer cylinder piston 15 to the atmosphere. As shown in FIG. 3, the first orifice mechanism 1 is provided with a flow path 3 1, 2 5 which is formed in a straight line from the flow path 21 upwards, and an employee consumer cooperative that passes through the Intellectual Property Bureau of the Ministry of Economic Affairs. A flow path 3 3 on the 31 side is printed, and in the middle of the flow path 31, a spring 3 4 and a spring support portion 3 4 a smaller than the inner diameter of the flow path 3 1 are provided, and a spring 3 4 The check valve 3 6 formed by the check valve ball 3 5 which is springing toward the flow path 21 side is connected between the check valve 36 and the flow path 21 to reduce the diameter of the flow path 3 1 to form a funnel shape. Then, a flow path 3 1 a 〇 flow path 3 3 with a smaller inner diameter than the flow path 31 is formed, and the part near the flow path 21 by the one-way valve 36 is applied to the Chinese paper standard (CNS) Eight 4 threats (21〇χ297 公 董) -9-558528 A7 B7 V. Description of the invention (7) The side of the spare tank is formed by bypassing the one-way valve 36. Above the one-way valve 36, a flow path switching valve 24 is arranged to merge the flow path 33 with the spring support portion 3a. As shown in FIG. 4, the flow path switching valve 24 is provided with a flow path 2 5 that penetrates the center of the flow path and communicates with the spring support portion 3 4 a and an inner diameter of the flow path 25 that merges into the flow path 25. The same six flow paths 2 6 a, 2 6 b, 26c, 26d, 26e, 26f. The inner diameters of the flow paths 26a to 26f are smaller than the inner diameter of the flow paths 33. The head of the flow path switching valve 24 is formed into a hexagonal nut-shaped dial, and openings of 2 6 a to 2 6 f are formed at corresponding positions on the six faces of the hexagonal nut shape. unit. Since the flow path switching valve 24 is rotated by using the flow path 25 as a center, any one of the six flow paths 2 6 a to 2 6 f is connected to the flow path 3 3. After the head 27 is rotated, an arbitrary flow path is selected to adjust the flow rate of the gas passing through the flow path 33. Since the six faces on the outer periphery of the head 2 7 are respectively marked with a symbol 2 8 representing the inner diameter of the six flow paths 2 6 a to 2 6 f, the mark 2 8 can be directed toward the flow path 3 3 The side fits easily select any flow path from the six flow paths 2 6 a to 2 6 f. The second orifice mechanism 3 0 is connected to the intermediate gas chamber 29 and the atmosphere as shown in FIG. 5. The second orifice machine, the structure 3, is formed by the lower end of the outer cylinder 13. Nearby vent holes 3 7; and vent holes 3 8 formed near the upper end of the inner cylinder 16; and air seals 3 9 are assembled at the lower end of the outer cylinder 13 to form the outer cylinder 13 and the inner cylinder 16 The size of the paper in the gap of 6 is applicable to the Chinese National Standard (CNS) A4 specification (21〇 × 297). (Please read the precautions on the back before filling out this page.) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives -10- 558528 A7 B7 V. Description of the invention (8) Road 40. When the vehicle is running, under normal use of the suspension device, the pressure regulating valve 4 is closed, and the gas system supplied from the storage tank 5 is sealed in the reserve tank 3, the upper gas chamber 20, and the lower gas chamber 19. status. In this state, since the gas system is sealed in the reserve tank 3, the upper gas chamber 20, and the lower gas chamber 19, the function of the gas spring can be exerted against the load acting on the gas suspension device body 10. At this time, the gas spring functions as a gas spring by the pressure in two gas chambers sealed in the upper gas chamber 20 and the lower gas chamber 19, so its weight resistance is 1.5 to 2 times that of a conventional gas spring. . Therefore, it is possible to avoid an increase in the size of the device and to improve the weight resistance. In addition, since the lower gas chamber 19 and the upper gas chamber 20 are connected by the flow path 21 in the piston shaft 17, the pressure in the upper gas chamber 20 and the pressure in the lower gas chamber 19 can be kept the same. Pressure, and because the load carried is evenly supported by the air pressure in the upper gas chamber 20 and the lower gas chamber 19, so the town avoids the disadvantage of focusing on one of the * gas chambers, and obtains a smooth suspension Crane function. Next, the operation state of the suspension device will be described with reference to FIGS. 6 to 9. Fig. 6 is a longitudinal sectional view showing a state of compression operation of the gas suspension device body on the first way. Fig. 7 is a partial sectional view of Fig. 6 and Fig. 8 is an extension of the gas suspension device body in Fig. 1. A longitudinal sectional explanatory view of the operation. FIG. 9 is a partially enlarged view of FIG. 8. When the up and down vibration and rolling load of the vehicle is applied to the body of the gas suspension device 10 'as shown in FIG. 6, the piston for the outer cylinder 1 5 series ^ paper size applies Chinese national standard ^ milk 丨 from the specifications " ⑴ / Tear mm) " -11-(Please read the notes on the back before filling out this page), tr Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economy 558528 A7 ____B7 V. Description of the invention (9) Used by the inner cylinder The piston 18 moves in the extension direction to compress the gas in the lower gas chamber 19 and the upper gas chamber 20, and the gas system flows into the reserve tank 3 through the flow path 21, the first orifice mechanism 1, and the like. At this time, As shown in FIG. 7, the one-way valve ball 3 5 is rebounded against the spring 3 4 by the airflow flowing in from the flow path 21, and the check valve 36 is opened, so the airflow does not pass. The flow path 2 6 a having a small inner diameter passes through the flow paths 3 1 a, 3 1 and the spring support portion 3 4 a, and then flows into the spare tank 3 through the flow path 25. Since the inner diameter of the flow path 3 1 a is smaller than Because of the inner diameter of the flow path 21, when the airflow flows from the flow path 21 to the flow path 3a, the flow velocity is generated due to the compressed airflow. The drastic changes cause the loss of flowing energy, so the function of the buffer can be exerted. In addition, when the gas in the lower gas type 19 and the upper gas chamber 20 is formed due to the load acting on the body of the gas suspension device 10 In the compressed state, the volume of the intermediate gas chamber 29 is increased and the pressure is reduced, so that the air in the atmosphere passes through the second orifice mechanism 30 composed of the vent holes 37, 38, and the flow path 40, and flows into the middle. In the gas chamber 29, when the airflow passes through the second orifice mechanism 30, the airflow is compressed to cause a drastic change in the flow velocity, which causes the loss of flow energy, so the function of the buffer is exerted. On the other hand, when When the load acting on the gas suspension device body 10 is reduced or eliminated, as shown in FIG. 8, the outer cylinder piston 15 moves toward the inner cylinder piston 18 so that the lower gas chamber 19 and the upper portion The air pressure inside the gas chamber 20 decreases, and the gas in the reserve tank 3 flows into the lower gas chamber 19 and the upper gas chamber 20 through the first orifice mechanism 1. At this time, as shown in FIG. 9, because Check valve ball 3 5 is pressed by spring 3 4 I Zhang scale is applicable to China National Standard (CNS) A4 specification (210X297 mm) ~ suspect '-12-(Please read the precautions on the back before filling out this page) Order printed by the Ministry of Economic Affairs Intellectual Property Bureau employee consumer cooperative 558528 A7 B7 5 Description of the invention (10) and the one-way valve 36 is closed. When the airflow passes through the flow path 25, the flow path switching valve 24 flows the flow path 2 6 a to the side bypassing the flow path 3 1 and the flow path 3 3 'And flow into the upper gas chamber 20 and the lower gas chamber 19 through the flow path 21 because the internal diameters of the flow paths 2 6 a to 2 6 f are all smaller than the internal diameter of the flow path 2 5'. 5 flow direction flow path 2 6 a, etc. 'Due to the compressed air flow, the flow velocity changes drastically', so that the loss of flow energy is generated ', so the function of the buffer is exerted. The adjustment of the buffer function can be performed at the flow path switching valve 24 by selecting any of the flow paths 2 6 a to 2 6 f. However, when the load is reduced or released so that the outer cylinder piston 15 moves closer to the inner cylinder piston 18, the volume of the intermediate gas chamber 29 is reduced and the pressure is increased, so that the internal air passes through the vent hole 3 7 The second orifice mechanism 30, which is composed of 3, 38, and the flow path 40, is discharged into the atmosphere. When the air flow passes through the second orifice mechanism 30, the flow energy is consumed, so the function of the buffer is To play. In addition, in the suspension installation of this embodiment, the gas filled in the storage tank 5 can be supplied to the backup tank 3 through the pressure regulating valve 4 to increase its internal pressure, or the gas in the backup tank 3 can be increased. Discharge to the atmosphere to reduce its internal pressure. Therefore, by increasing / decreasing the internal pressure of the reserve tank 3 and increasing / decreasing the internal pressure of the upper gas chamber 20 and the lower gas chamber 19 communicating with the reserve tank 3, the outer cylinder piston 15 and the inner cylinder can be adjusted. With the rest position of the piston 18, the height adjustment of the vehicle body can be performed. [Effects of the invention] This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives-13- 558528 A7 _ B7__ 5. Description of the invention (11) According to the present invention, the following effects can be obtained. (Please read the precautions on the back before filling in this page) (1) The gas suspension device of the present invention is provided with: an outer cylinder having a closed end formed by one end of the cylindrical body by an upper cover; and The bottom cover closes the base end of the cylindrical body having an outer diameter smaller than the cylindrical inner diameter, and then the outer cylinder piston forms a closed shape at the other end, so that the outer cylinder piston slides airtightly on the inner peripheral surface of the outer cylinder. An inner cylinder; and a piston shaft configured to be air-tight and slidably penetrating the piston for the outer cylinder and having a base end portion fixed to the upper cover; and a piston shaft configured to be fixed to the piston shaft and slidable to the foregoing The inner cylinder has a piston for the inner cylinder. Therefore, the outer cylinder and the inner cylinder can be provided with a complete set of tubes, and the outer cylinder and the inner cylinder can be respectively arranged between the outer cylinder piston and the upper cover and the inner cylinder piston and the lower cover. The air-tight gas chamber that can be expanded / contracted is slid back and forth, and the suspension function is exerted by the gas pressure sealed in the two gas chambers. Therefore, the size of the suspension device can be avoided. Increased load capacity. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (2) A lower gas chamber is formed inside the piston shaft to communicate with the bottom cover and the inner cylinder piston, and the upper cover and the outer cylinder The gas flow path of the upper gas chamber separated by the piston allows the air pressure in the upper gas chamber and the lower gas chamber to be maintained at the same pressure, and because the load carried is evenly divided by the pressure in the upper gas chamber and the lower gas chamber. Support, it can avoid the disadvantage of the load concentrated in one of the gas chambers, and obtain the smooth suspension function. (3) By having a backup tank communicating with the gas flow path through the first orifice mechanism, the gas is sealed in the upper gas chamber, the lower gas chamber, and the backup tank, and the function of the spring can be exerted. The size of this paper applies to the Chinese National Standard (CNS) A4 specification (210X 297 mm) -14- 558528 A7 B7 _ * _ V. Description of the invention (12), the gas between the lower gas chamber and the reserve tank passes the first A single orifice mechanism is compressed to generate a loss of energy, so it can function as a buffer. In addition, the gas in the reserve tank can be increased or decreased by injecting gas into and discharged from the reserve tank, thereby changing the volume of the upper gas chamber and the lower gas chamber, thereby adjusting the height of the vehicle body. (4) A second orifice mechanism that communicates the intermediate gas chamber separated by the inner cylinder piston and the outer cylinder piston and the atmosphere is provided, so that the gas system flowing between the intermediate gas chamber and the atmosphere, Due to the energy loss caused by compression when passing through the second orifice mechanism, the buffering function can be further improved, and the buffering load reduction function can be improved. [Brief description of the drawing] Fig. 1: A schematic structural diagram showing a suspension device of an embodiment. Fig. 2: A longitudinal sectional view of the main body of the gas suspension device shown in Fig. 1. Fig. 3: An enlarged view of the main body of the gas suspension device shown in Fig. 2. Fig. 4: Plan view of the system flow path switching valve. This is a side view of the flow path switching valve. It is a bottom view of the aforementioned flow path switching valve. Fig. 5: A partial enlarged view of the main body of the gas suspension device shown in Fig. 2. Fig. 6 is a longitudinal sectional view for explaining the compression operation of the main body of the gas suspension device shown in Fig. 1. ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 1 ~~ -15- (Please read the precautions on the back before filling out this page) Alignment ·-Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 558528 A7 B7 V. Description of the invention (13) Figure 7: Partial enlarged view of the main body of the gas suspension device shown in Figure 6. Fig. 8: A longitudinal cross-sectional explanatory view of the stretching operation of the main body of the gas suspension device shown in Fig. 1. Fig. 9: A partial enlarged view of the main body of the gas suspension device shown in Fig. 8. Fig. 10 · Simplified structure diagram of a conventional body height adjusting suspension device! 〇 Fig. 11 Fig. 10 The body height adjusting suspension device shown in Fig. 10: a gas system diagram of the installation. [Illustration of drawing number] 1 3 4 5 10 11 12 13 14 15 16 17 This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) Order: No. 1 Orifice mechanism: spare tank: pressure regulating valve: storage tank: gas suspension device body: cap: upper cover: outer cylinder: lower cover: outer cylinder piston: inner cylinder: piston shaft Intellectual Property Bureau of the Ministry of Economic Affairs Employee Consumption Cooperative Printed -16- 558528 A7 B7 V. Description of the invention (14) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 17a: Upper end 17b: Lower end 18: Inner cylinder piston 19: Lower gas chamber 20: Upper gas chamber 1 13: Rear wheel lock mechanism 21, 25, 31, 31a, 33, 26a to 26f, 40: Flow path 22: Upper support plate 23: Link 24: Flow path switching valve 27: Head 28: Symbol 29: Intermediate gas Chamber 30: Second orifice mechanism 34: Bow early yellow 34a: Spring support portion 35: Check valve ball 36: Check valve 37, 38: Vent hole 39: Air seal material T: Wheel U: Body side member L: Wheel-side member (please read the precautions on the back before filling this page) Standards apply to China National Standard (CNS) A4 specifications (210X297 mm) 17-