M396336 五、新型說明： 【新型所屬之技術領域】 本創作係與增壓&有關，特別是關於-種多層增壓 缸。 【先前技術】 多層增壓缸係將多數個氣缸層疊設置，並利用氣壓推 動各該氣缸内的活塞，進而使一活塞桿產生多數倍壓力之 裝置。舉例而a，我國專利編號M317311所提供之「倍 力型氣動增壓缸」即為一種多層增廢缸，請參閱該專利案 之圖4(以下標號均為該專利案公告圖式之標號），該倍力 型乳動增麗缸2主要係將—活塞桿％穿過多數個層疊設 置之氣紅單元2卜該活塞桿26之殼體261具有一轴孔 266 ’以及多數個與該軸孔挪連通之氣孔267，該轴孔 266及該等氣孔267係用以供自一前端進氣孔23丨輸入之氣 體，通至各該氣缸單元21，以推動其中之活塞212帶動該活 塞才干26移動，進而使該活塞桿％產生倍力增壓之效果。 然而，上述該增祕2之各該氣缸單元21係由至少 圍設形成其氣室，因而容易產生氣體自各零組 2間的縫_出之問題’進而影響該活塞桿％產生之壓 二位=獅2相當不易組裝，若其零組件間的相 21内氣體：广中產生誤差’則更容易造成氣缸單元 鑽^有\尊卜茂之問題。另外，該活塞桿％之殼體刻 鑽3又有該等氣孔267，且其位置需可對應至盆所庫連通之 氣室，因此，該活窀搵％ ^ t ，、所應運逋之 ° 之加工過程繁瑣且需相當之準 3 確性。 以 、之刖述習知多層增壓缸有加工、組袭困難， 及密封性不足之缺失，因而有待改進。 【新型内容】 有鑑於上述缺失，本創作之主要目的在於提供一種多 層增壓缸，其較容錄製作及組裝，又改善流路之配置， 且其密封性佳因而增壓效果確實者。 為達成上述目的，本創作提供了一種多層增壓缸，包 含有一筒體，具有一第一端，以及一相對該第一端之第二 端，且該筒體貫穿有一作動通孔；複數個傳動單元，係設 於該筒體中自其第一端朝第二端方向依序層疊地設置，該 各傳動單元包含有一傳動缸及一傳動活塞；該傳動活塞具 有一位於該傳動缸中之大徑部，一自該大徑部朝該筒體第 二端方向凸伸之小徑部，以及一貫穿該大、小徑部之通 道’且該傳動活塞將該傳動虹分隔出一第一腔室及一第二 腔室，各該傳動缸之第一腔室之間係透過各傳動活塞的通 道而相互連通，至少一傳動缸之第一腔室係與該筒體之作 動通孔連通；以及一作用單元，係與該傳動單元之傳動活 塞連接。 為達成上述目的，本創作提供了一種多層增壓缸，包 含有一筒體，具有一第一端，以及一相對該第一端益呈開 放狀之第一端，且泫同體貫穿有一作動通孔；至少一傳動 單元，係設於該筒體中，該傳動單元包含有一傳動缸及一 4 M396336M396336 V. New description: [New technical field] This creation is related to pressurization &, especially about multi-layer supercharger. [Prior Art] A multi-layer supercharger cylinder is a device in which a plurality of cylinders are stacked, and a piston in each of the cylinders is pushed by air pressure, thereby causing a piston rod to generate a majority of pressure. For example, a, the "double force type pneumatic booster cylinder" provided by the Chinese patent number M317311 is a multi-layer waste-increasing cylinder. Please refer to Figure 4 of the patent (the following symbols are the labels of the patent announcement) The dynamometer type cradle 2 mainly passes the piston rod % through a plurality of stacked gas red units 2, the housing 261 of the piston rod 26 has a shaft hole 266 'and a plurality of shafts The hole 266 is connected to the air hole 267, and the air hole 267 is used for supplying gas from a front end air inlet 23 to the cylinder unit 21 to push the piston 212 to drive the piston. 26 moves, which in turn causes the piston rod to produce a multiplier effect. However, each of the cylinder units 21 of the above-mentioned secrets 2 is formed by at least enclosing a gas chamber thereof, so that a problem of a gas from the gap between the zero groups 2 is easily generated, thereby affecting the pressure generation of the piston rod. = Lion 2 is quite difficult to assemble. If the gas in the phase 21 between the components: the error in the wide area is more likely to cause the problem of the cylinder unit drilling. In addition, the piston rod 3 of the piston rod has the air holes 267, and the position thereof needs to correspond to the air chamber connected to the basin, so the activity % ^ t , The processing is cumbersome and requires considerable accuracy. It is necessary to improve the processing of the multi-layer supercharged cylinder, the difficulty of grouping, and the lack of sealing. [New content] In view of the above-mentioned shortcomings, the main purpose of this creation is to provide a multi-layer supercharged cylinder, which is more suitable for recording and assembly, and improves the arrangement of the flow path, and has good sealing performance and thus has a supercharging effect. In order to achieve the above object, the present invention provides a multi-layer supercharge cylinder comprising a cylinder having a first end and a second end opposite to the first end, and the cylinder has an actuating through hole therein; The transmission unit is disposed in the cylinder body and is sequentially stacked from the first end thereof toward the second end. The transmission units include a transmission cylinder and a transmission piston; the transmission piston has a transmission cylinder a large diameter portion, a small diameter portion protruding from the large diameter portion toward the second end of the tubular body, and a passage through the large and small diameter portions and the transmission piston separates the transmission rainbow into a first cavity a chamber and a second chamber, wherein the first chambers of each of the transmission cylinders communicate with each other through the passage of each of the transmission pistons, and the first chamber of the at least one transmission cylinder is in communication with the movable through hole of the cylinder; And an action unit connected to the transmission piston of the transmission unit. In order to achieve the above object, the present invention provides a multi-layer supercharged cylinder comprising a cylinder having a first end and a first end open to the first end, and the same body runs through an actuation pass a hole; at least one transmission unit is disposed in the cylinder, the transmission unit includes a transmission cylinder and a 4 M396336
傳動活塞；該傳動活塞料-錄該傳麻巾之大徑部， -自該大徑部朝該筒體第二端方向凸伸之小徑部以及一 貫穿該大、小徑部之通道，且該傳動活塞將該傳動缸分隔 出-第-腔室及-第二腔室，該第—腔室係與該傳動活塞 之通道及該龍之作動通孔連通；叫—作用單元，包含 有一作餘及—作黯塞，該作—被該作麟塞分隔I -作用室，該作用室係透過該傳動活塞之通道與該傳動缸 之第-腔f連通，該作贿耗_傳動單元之傳動活塞 藉此，當氣(液)體自該作動通孔進入該傳動缸之第一 =至端;傳動:塞並同時帶動該作用活塞朝該筒體 第-細方向移動’域(液)體會經由該傳動活塞 ==’再對該作用活塞產生推力，因此該作用活 易被力:二組件較容a transmission piston; the transmission piston material - a large diameter portion of the transfer napkin, - a small diameter portion protruding from the large diameter portion toward the second end of the cylinder body, and a passage through the large and small diameter portions, and The transmission piston separates the transmission cylinder from the -th chamber and the second chamber, the first chamber is in communication with the passage of the transmission piston and the movable through hole of the dragon; And - as a sluice, the work is separated by the lining - I - the chamber, the chamber is communicated with the first chamber f of the transmission cylinder through the passage of the transmission piston, which is a bribe _ transmission unit The transmission piston is thereby, when the gas (liquid) body enters the first to the end of the transmission cylinder from the actuation through hole; the transmission: the plug and simultaneously drives the action piston to move in the first-to-fine direction of the cylinder (liquid) It is realized that the driving piston generates thrust by the transmission piston ==', so the action is easy to be force: the two components are more
雜包覆在傳動單元與作用單元的外==:壓:筒 密封性’使得簡齡之增壓效果確實。…塗虹之 創作所提供之多層 以描 該 ;=用;式，將於後續的實施方式詳細】:中=、 也μ而，在本創作領域中直女 j 等詳細說明以及實施本創作；^^知識者應能瞭解， 於說明本創作，並_ +的特定實施例，僅係用 非用从限制本創作之專财請範 5 M396336 【實施方式】 以下將藉由所列舉之實施例配合隨附之圖式，詳細說 明本創作之技術内容及特徵，其中： _ 第圖為'一剖視不思圖，係顯不本創作一第一較佳實 施例所提供之多層增壓红之一施壓態樣； 第一圖為一剖視示意圖，係顯示本創作該第一較佳實 施例所提供之多層增壓缸之一復歸態樣； · 第二圖為第二圖A部分之放大圖； . 第四圖為一剖視示意圖，係顯示本創作一第二較佳實 鲁 施例所提供之多層增壓缸之一施壓態樣；以及 第五圖為一剖視示意圖，係顯示本創作該第二較佳實 施例所提供之多層增壓缸之一復歸態樣。 申請人首先在此說明，在以下將要介紹之實施例以及 圖式中，相同之參考號碼，表示相同或類似之元件或其結 構特徵。 請先參閱第一圖及第二圖，本創作一第一較佳實施例春 所提供之多層增壓缸10包含有一筒體30、一第一傳動單 兀40a、一第二傳動單元40b、一第三傳動單元4〇c，以 及一作用單元50。 該筒體30具有相對之一第—端31及一第二端32， 且該第-、第二端3卜32均呈開放狀；該筒體3()之筒壁 貫穿有-較靠近第-端31之作動通孔34，以及一較靠近 第二端32之復歸通孔36。 該第一傳動單元40a包含有一第一傳動缸❿及一傳 6 動活塞44 ’該第二傳動單元4〇b包含有一第二傳動缸42b 及一傳動活塞44，該第三傳動單元4〇c包含有一第三傳 動缸42c及一傳動活塞44 ;該第一、第二、第三傳動單 元40a、40b、40c係依序自該筒體30第一端31朝第二端 32方向層疊地設置於該筒體3〇内。 該第一傳動紅42a具有緊密地設置於該筒體30内之 一封蓋422及一内筒424，該封蓋422、内筒424，以及 第二、第三傳動缸42b、42c係依序層疊抵接。各該傳動 活塞44具有一緊密地設於傳動缸42a、42b、42c中之大 徑部442、一自該大徑部442朝該筒體30第二端32方向 凸伸之小徑部444 ’以及二貫穿該大、小徑部442、444 之通道446 ;各該傳動缸42a、42b、42c被傳動活塞44 分隔出一第一腔室426及一第二腔室428。各該傳動活塞 44更具有朝向該筒體30第二端32之一連接部448及一 進出端面449(如第三圖所示）’該連接部448係較該進出 端面448更接近該筒體30之第二端32，且該傳動活塞44 之通道446 —端的開口係位於該進出端面449。 該作用單元50包含有一作用缸52及一作用活塞 54 ’且該作用單元50係較各該傳動單元4〇a、40b、40e 更靠近該筒體30第二端32地設於該筒體30内。該作用 缸52係緊密地設於該筒體30，並抵接於該第三傳動缸 42c ;該作用活塞54具有一緊密地設於該作用缸52中之 大徑部542，以及一自該大徑部542朝該筒體30第二端 31方向凸伸之小徑部544，該作用活塞54將作用缸52分 M396336 隔出一作用室522及一開放空間524。 該第一、第二、第三傳動單元40a、40b、40c之傳動 活塞44係分別以其小徑部444緊密地穿設於該第二、第 三傳動缸42b、42c及該作用缸52，並分別以其連接部 448與該第二、第三傳動單元40b、40c之傳動活塞44及 該作用活塞54的大徑部442、542連接，換言之，該等傳 動活塞44及作用活塞54係自該筒體30第一端31朝第二 端32方向層疊連接，此外，該等活塞44、54係藉由螺栓 鎖固於其中心的方式方式與其相鄰之傳動活塞固接。 在前述各該傳動單元40a、40b、40c中，該第一傳動 缸42a之第一腔室426係與該筒體30之作動通孔34連 通’該第二、第三傳動缸42b、42c之第一腔室426係分 別透過該第一、第二傳動單元40a、40b的傳動活塞44通 道446與該單元之第一腔室426連通，該作用缸52之作 用至522則透過§亥第二傳動單元4〇c的傳動活塞44通道 446與該單元之第一腔室426連通。該第三傳動缸42c之 第二腔室428係與該筒體30之復歸通孔36連通，而該第 一、第二傳動缸42a、42b之第二腔室428則係可通以氟 體、或通以液體、或呈真空、或與大氣相通，或者該筒贌 30之復歸通孔36為一個或多個與之連通。 藉由前述多層增壓缸1〇之組成結構，如第戶斤 示，將氣(液)體自該筒體30之作動通孔34輸入該第〆傳 動缸42a之第一腔室426時，氣(液)體會經由各=傳動漭 塞44之通道446流通至各該第一腔室426及該作瘌爹 8 M396336 522，並推動該等傳動活塞44及該作用活塞54同步地朝 該筒體30第二端32移動，因此該作用活塞54可輸出該 等活塞44、54所產生壓力的總和。 之後，如第二圖所示，將氣(液)體自該筒體3〇之復 歸通孔36輪入該第三傳動單元4〇c之第二腔室428，即 可推動該單元之傳動活塞44並同時帶動其他活塞44、54 朝該清體30第一端31移動；如此一來，該多層增壓社 10町達到循環地慢速施壓及快速復歸之功能。 而且，該增壓缸10之各零組件不但容易被加工，組 裝時只要將該第一、第二、第三傳動單元4〇a、4〇b、4〇c 及該作用單元50依序放入該筒體3〇内即可，不但可避免 因組裝誤差產生氣(液)體外洩問題，該筒體3〇包覆在各 傳動單元40a、4〇b、40c及作用單元50外，更可提高該 增壓缸10之密封性，使得該增壓缸1〇之增壓效果確實。 前述該第一較佳實施例所提供之多層增壓缸係藉 由控制氣(液)體輪流自該筒體3〇之作動通孔34及復歸通 孔36輸入，以達到使該作用活塞54產生施壓效用及復歸 原位之功能。然而，如第四圖及第五圖所示，該多層增壓 缸10亦可於該作用缸52之開放空間524設有一彈性件 60，其一端係與該作用活塞54之大徑部542連接，另一 端係與該作用缸52相對固定，該彈性件6〇使該作用單元 5〇連動該傳動單元40a、40b、4〇c之傳動活塞44向該筒 體30的第一端31位移。 如第四圖所示，當氣(液)體自該作動通孔34輸入而 9 M396336 使該等活塞44、54朝該筒體30第二端32移動，意即， 該多層增壓缸10係呈施壓態樣時，該彈性件60會受該作 用活塞54壓縮，因而可在該作動通孔34停止進氣（液) 時，施以一彈性恢復力使該等活塞44、54復歸原位(如第 五圖所示），如此一來，僅需控制氣(液)體間歇地自該作動 通孔34進氣(液），即可達到使該作用活塞54產生施壓效 用及復歸原位之功能。 最後，必須再次說明，本創作於前揭實施例中所揭露 的構成元件，僅為舉例說明，並非用來限制本案之範圍， 其他等效元件的替代或變化，亦應為本案之申請專利範圍 所涵蓋。 M396336 【圖式簡單說明】 第一圖為一剖視示意圖，係顯示本創作一第一較佳實 施例所提供之多層增壓缸之一施壓態樣； 第二圖為一剖視示意圖，係顯示本創作該第一較佳實 施例所提供之多層增壓缸之一復歸態樣； 第三圖為第二圖A部分之放大圖； 第四圖為一剖視示意圖，係顯示本創作一第二較佳實 施例所提供之多層增壓缸之一施壓態樣；以及 第五圖為一剖視示意圖，係顯示本創作該第二較佳實 施例所提供之多層增壓缸之一復歸態樣。 M396336 【主要元件符號說明】 多層增壓缸10 筒體30 第二端32 復歸通孔36 第一傳動單元40a 第三傳動單元40c 第二傳動缸42b 封蓋422 第一腔室426 傳動活塞44 小徑部444 連接部448 作用單元50 作用室522 作用活塞54 小徑部544 彈性件60 第一端31 作動通孔34 第二傳動單元40b 第一傳動缸42a 第三傳動缸42c 内筒424 第二腔室428 大徑部442 通道446 進出端面449 作用缸52 開放空間524 大徑部542 12Miscellaneous coating on the outside of the transmission unit and the active unit ==: Pressure: The cylinder sealability makes the simple supercharged effect true. ...the multiple layers provided by Tu Hongzhi's creation to describe this; = use; formula, will be detailed in the following implementation methods:: ==, also μ, in this field of creation, straight women j, etc. elaborate and implement this creation; ^^ The knowledger should be able to understand, in order to explain the creation, and the specific embodiment of _ +, only use the non-use to limit the creation of the special account. 5 M396336 [Embodiment] The following examples will be adopted by the examples. In conjunction with the accompanying drawings, the technical content and features of the creation are described in detail, wherein: _ The figure is a cross-sectional view, which is a multi-layered red color provided by the first preferred embodiment. The first figure is a schematic cross-sectional view showing a resetting aspect of the multi-layer booster cylinder provided by the first preferred embodiment of the present invention; The fourth figure is a schematic cross-sectional view showing one of the multi-layer booster cylinders provided by the second preferred embodiment of the present invention; and the fifth figure is a cross-sectional view , showing the multi-layer booster cylinder provided by the second preferred embodiment of the present invention Return aspect. The Applicant first describes the same or similar elements or structural features in the embodiments and the drawings which are described below. Please refer to the first figure and the second figure. The multi-layer booster cylinder 10 provided by the spring of the first preferred embodiment includes a cylinder 30, a first transmission unit 40a and a second transmission unit 40b. A third transmission unit 4〇c, and an action unit 50. The cylinder 30 has a first end 31 and a second end 32, and the first and second ends 3 are open; the wall of the cylinder 3 is penetrated - closer to the first The actuating through hole 34 of the end 31 and the returning through hole 36 closer to the second end 32. The first transmission unit 40a includes a first transmission cylinder and a transmission piston 44'. The second transmission unit 4b includes a second transmission cylinder 42b and a transmission piston 44. The third transmission unit 4〇c A third transmission cylinder 42c and a transmission piston 44 are included; the first, second, and third transmission units 40a, 40b, and 40c are sequentially stacked from the first end 31 of the cylinder 30 toward the second end 32. Inside the cylinder 3〇. The first transmission red 42a has a cover 422 and an inner cylinder 424 which are closely disposed in the cylinder 30. The cover 422, the inner cylinder 424, and the second and third transmission cylinders 42b and 42c are sequentially arranged. Laminated to abut. Each of the transmission pistons 44 has a large diameter portion 442 that is tightly disposed in the transmission cylinders 42a, 42b, and 42c, and a small diameter portion 444' that protrudes from the large diameter portion 442 toward the second end 32 of the cylindrical body 30. Two passages 446 extending through the large and small diameter portions 442, 444; each of the transmission cylinders 42a, 42b, 42c is separated by a transmission piston 44 into a first chamber 426 and a second chamber 428. Each of the transmission pistons 44 further has a connecting portion 448 toward the second end 32 of the cylindrical body 30 and an inlet and outlet end surface 449 (as shown in the third figure). The connecting portion 448 is closer to the cylindrical body than the inlet and outlet end surface 448. The second end 32 of the third end 32 is located at the end of the passage 446 of the transmission piston 44. The action unit 50 includes a working cylinder 52 and a working piston 54 ′ and the working unit 50 is disposed on the cylinder 30 closer to the second end 32 of the cylinder 30 than the respective transmission unit 4 〇 a , 40 b , 40 e . Inside. The working cylinder 52 is closely disposed on the cylinder 30 and abuts against the third transmission cylinder 42c. The working piston 54 has a large diameter portion 542 closely disposed in the working cylinder 52, and The large diameter portion 542 extends toward the second end 31 of the cylindrical body 30, and the working piston 54 separates the working cylinder 52 from the M396336 to an action chamber 522 and an open space 524. The transmission pistons 44 of the first, second, and third transmission units 40a, 40b, and 40c are closely spaced through the second and third transmission cylinders 42b and 42c and the action cylinder 52 by their small diameter portions 444, respectively. And connecting the transmission piston 44 of the second and third transmission units 40b and 40c and the large diameter portions 442 and 542 of the active piston 54 with the connecting portion 448, respectively, in other words, the transmission piston 44 and the acting piston 54 are The first end 31 of the barrel 30 is laminated in the direction of the second end 32. Further, the pistons 44, 54 are fixed to their adjacent transmission pistons by bolts to the center thereof. In each of the transmission units 40a, 40b, 40c, the first chamber 426 of the first transmission cylinder 42a is in communication with the movable through hole 34 of the cylinder 30. The second and third transmission cylinders 42b, 42c The first chamber 426 is communicated with the first chamber 426 of the unit through the passage 446 of the transmission piston 44 of the first and second transmission units 40a, 40b, respectively, and the action cylinder 52 acts to 522 through the second The transmission piston 44 passage 446 of the transmission unit 4〇c communicates with the first chamber 426 of the unit. The second chamber 428 of the third transmission cylinder 42c is in communication with the return through hole 36 of the cylinder 30, and the second chamber 428 of the first and second transmission cylinders 42a, 42b is permeable to fluorine. Or through a liquid, or in a vacuum, or in contact with the atmosphere, or the return through hole 36 of the cartridge 30 is in communication with one or more of them. When the gas (liquid) body is input from the actuating through hole 34 of the cylinder 30 into the first chamber 426 of the second impeller cylinder 42a by the above-described structure of the multi-layer supercharging cylinder 1? The gas (liquid) body will flow to each of the first chambers 426 and the rams 8 M396336 522 via the passages 446 of the respective drive dampers 44, and push the transmission pistons 44 and the active pistons 54 simultaneously toward the cylinder The second end 32 of the body 30 is moved so that the active piston 54 can output the sum of the pressures generated by the pistons 44,54. Then, as shown in the second figure, the gas (liquid) body is rotated from the return hole 36 of the cylinder 3 into the second chamber 428 of the third transmission unit 4〇c, thereby driving the unit. The piston 44 simultaneously drives the other pistons 44, 54 to move toward the first end 31 of the clearing body 30; thus, the multi-layer supercharged 10 town achieves the functions of cyclically slow pressing and rapid resetting. Moreover, the components of the booster cylinder 10 are not only easy to be processed, but also the first, second, and third transmission units 4〇a, 4〇b, 4〇c and the active unit 50 are sequentially placed during assembly. It can be inserted into the cylinder 3, which can avoid the problem of gas (liquid) leakage due to assembly error. The cylinder 3〇 is wrapped around each of the transmission units 40a, 4〇b, 40c and the action unit 50, and The sealing performance of the booster cylinder 10 can be improved, so that the supercharging effect of the booster cylinder 1 is reliable. The multi-layer supercharged cylinder provided by the first preferred embodiment is controlled by the control gas (liquid) body to be input from the movable through hole 34 and the return through hole 36 of the cylinder 3 to achieve the acting piston 54. The function of applying pressure and returning to the original position. However, as shown in the fourth and fifth figures, the multi-layer booster cylinder 10 can also be provided with an elastic member 60 in the open space 524 of the working cylinder 52, and one end thereof is connected to the large diameter portion 542 of the working piston 54. The other end is fixed relative to the working cylinder 52. The elastic member 6 is configured to displace the driving piston 44 of the transmission unit 40a, 40b, 4〇c to the first end 31 of the cylinder 30. As shown in the fourth figure, when the gas (liquid) body is input from the actuating through hole 34, 9 M396336 moves the pistons 44, 54 toward the second end 32 of the barrel 30, that is, the multi-layer boosting cylinder 10 When the pressure is applied, the elastic member 60 is compressed by the acting piston 54 so that when the driving through hole 34 stops the intake (liquid), an elastic restoring force is applied to return the pistons 44 and 54. In situ (as shown in the fifth figure), in this way, it is only necessary to control the gas (liquid) body to intermittently intake (liquid) from the actuating through hole 34, so as to achieve the pressure effect of the acting piston 54 and The function of returning to the original position. Finally, it must be explained again that the constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. Alternatives or variations of other equivalent elements should also be the scope of the patent application of the present application. Covered. M396336 [Simplified description of the drawings] The first figure is a schematic cross-sectional view showing one of the multi-layered pressurized cylinders provided by a first preferred embodiment of the present invention; the second figure is a schematic cross-sectional view, It is shown that one of the multi-layer booster cylinders provided by the first preferred embodiment of the present invention is reset; the third figure is an enlarged view of the second part of FIG. A; the fourth figure is a cross-sectional view showing the creation a second embodiment of the multi-layer booster cylinder provided by the second preferred embodiment; and a fifth cross-sectional view showing the multi-layer booster cylinder provided by the second preferred embodiment A return to the situation. M396336 [Description of main components] Multi-layer booster cylinder 10 cylinder 30 second end 32 returning through hole 36 first transmission unit 40a third transmission unit 40c second transmission cylinder 42b cover 422 first chamber 426 transmission piston 44 small Diameter portion 444 Connecting portion 448 Acting unit 50 Acting chamber 522 Acting piston 54 Small diameter portion 544 Elastic member 60 First end 31 Actuating through hole 34 Second transmission unit 40b First transmission cylinder 42a Third transmission cylinder 42c Inner cylinder 424 Second Chamber 428 Large diameter portion 442 Channel 446 Inlet and exit end face 449 Acting cylinder 52 Open space 524 Large diameter portion 542 12