1337942 九、發明說明： 【發明所屬之技術領域】 本案係關於一種列印墨匣及其所適用之排氣結構，尤 指一種適用於連續供墨系統之列印墨匣及其所適用之排 氣結構。 【先前技術】 一般而言，喷墨印表機由於具有操作容易且可列印於 多種喷墨媒體等優點，廣受消費大眾歡迎，但噴墨印表機 使用一段時日後，便會因墨水匣之墨水耗盡而須更換墨水 匣，目則常見之更換方法係丢棄舊有之墨水匣再安裝全新 之墨水匣以提供墨水，此舉不但造成墨水匣體的浪費，且 因墨水匣之價格昂貴而無形地增加了使用者的開銷。為了 節省列印成本並避免資源浪費’重複使用同一個墨水匿的 連續供墨系統便因應而生。 現有的連續供墨系統皆為外置式連續供墨系統，其係 於喷墨印表機外設置一供墨匣，並藉由管線連接供墨匣及 喷墨印表機内部之列印墨匣，利用真空導墨的原理將墨水 自供墨匣導入列印墨匣中，再透過目視觀察供墨匣之墨水 耗用情形以適時補充墨水至供墨匣中，便可達成列印墨匣 供墨不間斷之連續供墨目的。 然而上述連續供墨系統於使用上卻有諸多的限制及 不便。首先供墨匣放置的高度必須和喷墨印表機位於同一 平面，且供墨匣之墨水液面須略低於喷墨印表機之噴嘴， 6 1337942 .r « - 以避免列印墨匣因承受來自供墨匣過大之液壓而造成墨 水自出墨口溢出。但靜置一段時間後，列印墨匣常會因其 墨水液面較高而回流至供墨匣中，不但嚴重影響供墨狀 態，且在重新使用時須浪費一定量的墨水，方可使列印墨 匣壓力恢復平衡而順利供墨。 其-人’由於供墨匣放置的位置隱蔽’使用者容易疏於 補墨’當供墨匣之墨水用完時便會造成列印墨匣無法正常 ^ 供墨’甚至會因缺墨乾涸而阻塞列印墨匣之出墨口。再 者，列印墨匣、供墨匣及管線的組裝繁複，若管線安裝不 當將影響供墨匣承載座之運動而降低列印品質，且管線一 但鬆脫更會造成漏墨，而纏繞的管線亦會影響噴墨印表機 之外部美觀。 此外，習知列印墨匣頂端係具有一小孔，用以排除列 印墨匣内部多餘之氣體，並平衡列印墨度内部之壓力然 φ 而在連續供墨系統運作時，當墨水持續地注入列印墨匣中 時，會使得列印墨匣内部之壓力改變，但因該開口係與外 界相連通，因而使得列印墨匣内之氣密性產生影響，甚至 容易經由該開口發生漏墨的情形’將降低列印墨匣之使用 壽命及列印品質。 有鑑於此，如何發展一種可改善上述習知缺點之適用 於連續供墨系統之列印墨g及其所適用之排氣結構，實為 目前迫切需要解決之課題。 【發明内容】 7 1337942 本案之主要目的在於提供一種列印墨匣及其所適用 之排氣結構，俾解決習知技術藉由列印墨匣頂端所設置小 孔於排除列印墨匣内空氣時氣密性會受影響，甚至容易發 生漏墨的情形，降低列印墨匣之使用壽命及列印品質等缺 點。 ' 為達上述目的，本案之一較廣義實施態樣為提供一種 列印墨匣，其係適用於連續供墨系統，其係包含：墨匣本 體，具有排氣通道，排氣通道係可連接抽氣裝置施以抽氣 作用；蓋體，具有與墨匣本體内部相連通之連通孔以及與 排氣通道相連通之抽氣孔；閥片層，設置於蓋體上，並具 有閥片結構，間片結構係覆蓋於連通孔上；以及上封蓋， 覆蓋於閥片層及部分蓋體上，用以與閥片層間定義形成連 通二間，透過抽亂裝置對排氣通道進行抽氣使連通空間内 之壓力改變，使得閥片層之閥片結構產生形變而不封閉連 通孔，俾使墨匣本體内之氣體可經由連通孔、連通空間、 ^ 抽氣孔’由排氣通道輸出。 為達上述目的，本案之另一較廣義實施態樣為提供一 種排氣結構，其係包含：蓋體，其係具有與内部相連通之 連通孔及抽氣孔；閥片層，其係設置於蓋體上，並具有閥 片結構，閥片結構係覆蓋於連通孔上；以及上封蓋，其係 覆蓋於閥片層及部分蓋體上，用以與閥片層間定義形成連 通空間；透過對抽氣孔進行抽氣使連通空間内之壓力改 變，使得閥片層之閥片結構產生形變而不封閉連通孔，俾 使連通孔、連通空間及抽氣孔相互連通。 8 1337942 【實施方式】 體現本案特徵與優點的一些典型實施例將在後段的 說明中詳細敘述。應理解的是本案能夠在不同的態樣上具 有各種的變化，其皆不脫離本案的範圍，且其中的說明及 圖示在本質上係當作說明之用，而非用以限制本案。 請參閱第一圖，其係為本案較佳實施例之列印墨匣之 _ 結構示意圖，如圖所示，列印墨匣1係包含蓋體11、閥片 _ 層12、上封蓋13以及墨匣本體16，其中，蓋體11、閥片 層12以及上封蓋13係共同構成一排氣結構10A。另外， 蓋體11上係具有注墨孔110,其係連接於一供墨管14,用 以將墨水補注入墨匣本體16内部，並且，蓋體11上更具 有一連通孔111及一抽氣孔112，連通孔111係與墨匣本 體16内部相連通，而抽氣孔112則係連接於一排氣通道 15，且該排氣通道15係連接於一抽氣孔162，該抽氣孔 φ 162可藉由一抽氣裝置，例如：泵浦（未圖示），且不以此為 限，來封蓋達成抽氣作用。 請參閱第二圖（a)，其係為第一圖所示之蓋體之結構示 意圖，如圖所示，蓋體11係具有注墨孔110、連通孔111、 抽氣孔112、複數個第一凹槽115、第二凹槽116及複數個 第一定位元件，其中，第二凹槽116係環繞設置於連通孔 111周圍，以及，於本實施例中，該複數個第一定位元件 可為凸柱117，但不以此為限。另外，當列印墨匣1係為 單色列印墨匣時，則注墨孔110、連通孔111以及抽氣孔 9 1337942 Π2之數量皆為1個，但若列印墨匣〗係具有複數個裝設 不同顏色之墨匣本體16時，則注墨孔11〇、連通孔1Π以 及抽氣孔112之數量則可依其相對應之列印墨匣1而任施 變化。 請參閲第二圖（b)’其係為第一圖所示之閥片層之結構 示意圖’如圖所示’閥片層12係具有複數個閥片結構121 及複數個定位孔122，其中，閥片結構121之數量係與連 _ 通孔111相同，且閥片結構121係具有複數個鏤空孔洞 121a及延伸部121b，而定位孔122則與蓋體11之凸柱117 相對應设置，故將閥片層12設置於蓋趙11上時，係先將 複數個定位孔122穿設於蓋體11之凸柱117上，以使閥片 層12固定設置於蓋體u上，並使複數個閥片結構ΐ2ι覆 蓋於連通孔111上。 請參閱第二圖（c)，其係為第一圖所示之上封蓋之結構 示意圖，如圖所示，上封蓋13之内部係同樣具有複=個 第三凹槽131以及與複數個第二定位元件，該複數個第二 定位元件可為凹陷結構132，但不以此為限，且其係與蓋 體11上之凸柱117相對應設置，用以與該凸柱117相互卡 合，以使上封蓋13固定設置於閥片層12及部分之蓋體u 上。 請同時參閱第三圖（a)、（b)’其係分別為第一圓之蓋體 之組裝示意圖以及第一圖之排氣結構之剖面結構示意 圖如第二圖（a)所示，蓋體11係覆蓋於墨匣本體μ上， 而第一密封環113則設置於蓋體11之第一凹槽115内（如 1337942 第二，所：)’以及複數個第二密封環ii4係設置於複 數個第二凹槽u㈣，其中，第—密封環ιΐ3及第二㈣ 環m之材質可為卿材料所製成切勝環但不以此為 限，並且，設置於第二凹槽116内的第二密 4可為 一圓環結構，其厚度係大於第二凹槽U6之深度，使得設 置於第二凹槽116内之第二密封環114係部分凸出於蓋體 11之上表面118 °1337942 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a printing ink cartridge and an exhaust structure therefor, and more particularly to a printing ink cartridge suitable for a continuous ink supply system and a row suitable for the same Gas structure. [Prior Art] In general, inkjet printers are popular among consumers because of their ease of operation and can be printed on a variety of inkjet media. However, after using inkjet printers for a period of time, inks will be used. If the ink is exhausted and the ink needs to be replaced, the common replacement method is to discard the old ink and install a new ink to provide the ink. This not only causes waste of the ink cartridge, but also causes ink to burn. Expensive and intangible increases the user's overhead. In order to save printing costs and avoid waste of resources, the continuous ink supply system that reuses the same ink is used. The existing continuous ink supply system is an external continuous ink supply system, which is provided with an ink supply cartridge outside the inkjet printer, and connects the ink supply cartridge and the inkjet printer inside the inkjet printer through a pipeline. Using the principle of vacuum ink guiding, the ink is introduced into the ink cartridge from the ink supply cartridge, and then the ink consumption of the ink cartridge is visually observed to timely replenish the ink into the ink cartridge to obtain the ink cartridge for printing. Ink continues to supply ink continuously. However, the above continuous ink supply system has many limitations and inconveniences in its use. First, the height of the ink supply must be on the same plane as the inkjet printer, and the ink level of the ink supply must be slightly lower than that of the inkjet printer. 6 1337942 .r « - To avoid printing ink The ink overflows from the ink outlet due to the excessive pressure from the ink supply. However, after standing for a period of time, the printing ink cartridge often returns to the ink supply cartridge due to its high ink level, which not only seriously affects the ink supply state, but also wastes a certain amount of ink when re-used. Ink and ink pressure restores balance and smooth ink supply. The person-because of the position where the ink supply is placed is concealed, and the user is prone to make up the ink. When the ink of the ink supply is used up, it will cause the ink to be unsatisfactory. The ink supply may even be caused by the lack of ink. Block the ink outlet of the ink cartridge. Furthermore, the assembly of ink cartridges, ink cartridges and pipelines is complicated. If improper installation of the pipeline will affect the movement of the ink cartridge carrier, the printing quality will be reduced, and if the pipeline is loose, it will cause ink leakage and entanglement. The pipeline also affects the aesthetics of the exterior of the inkjet printer. In addition, the conventional ink jet top has a small hole for eliminating excess gas inside the ink jet and balancing the pressure inside the ink, but when the continuous ink supply system is operated, when the ink continues When the ground ink is injected into the ink cartridge, the pressure inside the ink cartridge is changed, but since the opening is in communication with the outside, the airtightness in the ink cartridge is affected, and even the opening is easily generated. The situation of ink leakage will reduce the service life and print quality of the ink cartridge. In view of this, how to develop a printing ink g suitable for the continuous ink supply system and the exhaust structure to which it is applied, which can improve the above-mentioned conventional disadvantages, is an urgent problem to be solved. SUMMARY OF THE INVENTION 7 1337942 The main purpose of the present invention is to provide a printing ink cartridge and an exhaust structure suitable for the same, which solves the conventional technique for eliminating the ink in the ink jet by printing the small holes provided at the top of the ink fountain. The air tightness is affected, and even the ink leakage is likely to occur, which reduces the shortcomings such as the service life of the ink cartridge and the print quality. In order to achieve the above object, one of the more broad aspects of the present invention provides a printing ink cartridge which is suitable for a continuous ink supply system, comprising: an ink cartridge body having an exhaust passage and an exhaust passage connected The air suction device applies a pumping action; the cover body has a communication hole communicating with the interior of the ink cartridge body and a suction hole communicating with the exhaust passage; the valve sheet layer is disposed on the cover body and has a valve plate structure, The inter-sheet structure covers the communication hole; and the upper cover covers the valve sheet layer and a part of the cover body to define a communication between the valve sheet layer and the exhaust passage through the pumping device. The pressure change in the communication space causes the valve plate structure of the valve layer to be deformed without closing the communication hole, so that the gas in the ink cartridge body can be output from the exhaust passage via the communication hole, the communication space, and the air suction hole. In order to achieve the above object, another broad aspect of the present invention provides an exhaust structure comprising: a cover body having a communication hole and a suction hole communicating with the interior; and a valve sheet layer disposed on the valve layer a cover body having a valve plate structure, the valve plate structure covering the communication hole; and an upper cover covering the valve plate layer and the partial cover body for defining a communication space with the valve plate layer; The suction of the suction hole changes the pressure in the communication space, so that the valve plate structure of the valve sheet layer is deformed without closing the communication hole, so that the communication hole, the communication space and the suction hole communicate with each other. 8 1337942 [Embodiment] Some exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It is to be understood that the present invention is capable of various modifications in the various aspects of the present invention, and the description and illustration are in the nature of Please refer to the first figure, which is a schematic view of the ink cartridge of the preferred embodiment of the present invention. As shown, the ink cartridge 1 includes a cover 11, a valve sheet _ layer 12, and an upper cover 13 And the ink cartridge body 16, wherein the cover 11, the valve sheet layer 12 and the upper cover 13 together constitute an exhaust structure 10A. In addition, the cover body 11 has an ink-receiving hole 110 connected to an ink supply tube 14 for filling ink into the interior of the ink cartridge body 16, and the cover body 11 further has a communication hole 111 and a pumping hole. The air hole 112, the communication hole 111 is connected to the inside of the ink cartridge body 16, and the air suction hole 112 is connected to an exhaust passage 15, and the exhaust passage 15 is connected to an air suction hole 162, and the air suction hole φ 162 can be The pumping action is achieved by a suction device, such as a pump (not shown), and not limited thereto. Please refer to the second figure (a), which is a schematic structural view of the cover body shown in the first figure. As shown in the figure, the cover body 11 has an ink filling hole 110, a communication hole 111, a suction hole 112, and a plurality of a groove 115, a second groove 116, and a plurality of first positioning elements, wherein the second groove 116 is disposed around the communication hole 111, and in the embodiment, the plurality of first positioning elements can be It is a stud 117, but not limited thereto. In addition, when the printing ink cartridge 1 is a monochrome printing ink cartridge, the number of the ink filling hole 110, the communication hole 111, and the air venting hole 9 1337942 Π2 is one, but if the printing ink cartridge has a plural number When the ink cartridge body 16 of different colors is installed, the number of the ink filling holes 11 〇, the communication holes 1 Π and the air venting holes 112 may be changed according to the corresponding ink jets 1 . Please refer to the second figure (b), which is a schematic structural view of the valve plate layer shown in the first figure. As shown in the figure, the valve plate layer 12 has a plurality of valve plate structures 121 and a plurality of positioning holes 122. The valve plate structure 121 is the same as the connection hole 111, and the valve plate structure 121 has a plurality of hollow holes 121a and extensions 121b, and the positioning holes 122 are corresponding to the protrusions 117 of the cover 11. Therefore, when the valve layer 12 is disposed on the cover 11, the plurality of positioning holes 122 are firstly disposed on the protrusion 117 of the cover 11 so that the valve layer 12 is fixedly disposed on the cover u, and A plurality of valve sheet structures ΐ2ι are covered on the communication hole 111. Please refer to the second figure (c), which is a schematic structural view of the upper cover shown in the first figure. As shown in the figure, the inner part of the upper cover 13 also has a complex third groove 131 and a plurality a second positioning component, the plurality of second positioning components may be a recessed structure 132, but not limited thereto, and is disposed corresponding to the protruding post 117 on the cover 11 for mutually interacting with the protruding post 117 The engagement is such that the upper cover 13 is fixedly disposed on the valve sheet layer 12 and a portion of the cover u. Please refer to the third figure (a), (b) for the assembly diagram of the first round cover and the cross-sectional structure of the first exhaust structure as shown in the second figure (a). The body 11 is covered on the ink cartridge body μ, and the first sealing ring 113 is disposed in the first recess 115 of the cover 11 (such as 1337942 second, all:) and a plurality of second sealing rings ii4 are disposed. The plurality of second grooves u (four), wherein the material of the first sealing ring ι 3 and the second (four) ring m can be a cut ring made of a material of the singular material, but not limited thereto, and is disposed in the second groove 116 The second inner ring 4 may be a ring structure having a thickness greater than the depth of the second groove U6 such that the second seal ring 114 disposed in the second groove 116 partially protrudes from the cover body 11. Surface 118 °
當閥片層12設置於蓋體11上時（如第三圖（b)所示）， 定位孔122將穿設於蓋體11之凸柱117上，使得閥片層 12之閥片結構121與設置於第二凹槽116内之第二密封環 114相抵頂，由於第二密封環114係部份凸出於蓋體u之 上表面118，因而使得閥片結構121呈現微凸起之結構。 而上封蓋13之第三凹槽131内亦設置有複數個第三 密封環134，因此當上封蓋13對應設置於閥片層12之上 時’閥片層12之凸柱將相對插入上封蓋13之凹陷結 構132内，當其固設於閥片層12上時’將與閥片層12間 定義形成一連通空間133，並且，由於上封蓋13之第三密 封環134及蓋體11之第一密封環113各自抵頂於閥片層 12上，使得閥片層12上之閥片結構121週邊具有一張力’ 且藉由凸柱117、定位孔122及凹陷結構132之相互卡合’ 使得上封蓋13及閥片層12得以固定設置於蓋體11上。 請參閱第四圖（a)，其係為第三圖（b)所示之未作動示意 圖，如圖所示，將蓋體11組裝於墨匣本體16上，再依序 覆蓋閥片層12及上封蓋13，並對蓋體11及上封蓋13對 1337942 結構171係覆蓋於墨匣本體16底部之抽氣孔162上，該 抽氣孔162則與排氣通道15相連通。由於排氣結構19内 閥片結構171之作動方式係與前述實施例相同，因而不再 贅述。 當泵浦作動時，可促使列印墨匣1内部多餘之氣體經 由墨匣本體16上部之排氣結構10A進入排氣通道15，再 由墨匣本體16底部之排氣結構19而排出列印墨匣1之 _ 外，以有效將列印墨匣内之氣體排放出來，增加列印墨匣 之使用壽命並增加列印品質。 綜上所述，本案之列印墨匣及其所適用之排氣結構係 適用於一連續供墨系統，主要由墨匣本體、蓋體、閥片層、 上封蓋所組成，其係藉由一抽氣裝置之作動，透過墨匣本 體之排氣通道進行抽氣，使得介於上封蓋及閥片層之間之 連通空間壓力改變，進而開啟閥片層上之閥片結構，以進 行氣體之輸送，由於本案之排氣結構可有效排除列印墨匣 # 内部之氣體，且保持列印墨匣内部之氣密性，更不會產生 漏墨之情形，並可延長列印墨匣之使用壽命及提高列印品 質。是以，本案之列印墨匣及其所適用之排氣結構極具產 業之價值，爰依法提出申請。 本案得由熟習此技術之人士任施匠思而為諸般修 飾，然皆不脫如附申請專利範圍所欲保護者。 13 1337942 【圖式簡單說明】 第一圖：其係為本案較佳實施例之列印墨匣之結構示意 圖0 第二圖（a):其係為第一圖所示之蓋體之結構示意圖。 第二圖（b):其係為第一圖所示之閥片層之結構示意圖。 第=圖⑷：其係為第—圖所示之上封蓋之結構示意圖。When the valve sheet layer 12 is disposed on the cover body 11 (as shown in the third figure (b)), the positioning hole 122 will pass through the boss 117 of the cover body 11 such that the valve plate structure 121 of the valve sheet layer 12 Abutting against the second sealing ring 114 disposed in the second recess 116, since the second sealing ring 114 protrudes from the upper surface 118 of the cover u, the valve structure 121 is slightly convex. . The third recess 131 of the upper cover 13 is also provided with a plurality of third sealing rings 134. Therefore, when the upper cover 13 is correspondingly disposed on the valve layer 12, the protrusions of the valve layer 12 will be relatively inserted. The recessed structure 132 of the upper cover 13 defines a communication space 133 with the valve sheet layer 12 when it is fixed on the valve sheet layer 12, and the third sealing ring 134 of the upper cover 13 and The first sealing rings 113 of the cover 11 respectively abut against the valve sheet layer 12, so that the valve plate structure 121 on the valve sheet layer 12 has a force around the valve plate 121 and is supported by the protrusions 117, the positioning holes 122 and the recessed structure 132. Engaging each other' allows the upper cover 13 and the valve sheet layer 12 to be fixedly disposed on the cover 11. Please refer to the fourth figure (a), which is an unactuated schematic diagram shown in the third figure (b). As shown, the cover body 11 is assembled on the ink cartridge body 16, and the valve layer 12 is sequentially covered. And the upper cover 13 and the cover body 11 and the upper cover 13 pair 1397942 structure 171 are covered on the air suction hole 162 at the bottom of the ink cartridge body 16, and the air suction hole 162 is in communication with the exhaust passage 15. Since the operation of the valve piece structure 171 in the exhaust structure 19 is the same as that of the foregoing embodiment, it will not be described again. When the pump is actuated, the excess gas inside the printing ink cartridge 1 is caused to enter the exhaust passage 15 through the exhaust structure 10A at the upper portion of the ink cartridge body 16, and then discharged by the exhaust structure 19 at the bottom of the ink cartridge body 16. In addition to the ink cartridge 1 , it effectively discharges the gas in the ink cartridge, increasing the service life of the ink cartridge and increasing the print quality. In summary, the ink cartridge and the applicable exhaust structure of the present invention are applicable to a continuous ink supply system, which is mainly composed of an ink cartridge body, a cover body, a valve sheet layer and an upper cover. Actuated by an air extracting device, pumping through the exhaust passage of the ink cartridge body, so that the pressure of the communication space between the upper cover and the valve layer changes, thereby opening the valve plate structure on the valve sheet layer, Gas delivery, because the exhaust structure of the present invention can effectively exclude the gas inside the inkjet printing ink, and maintain the airtightness inside the inkjet printing cylinder, the ink leakage is not generated, and the printing ink can be extended. The service life of the crucible and the improvement of print quality. Therefore, the ink cartridges in this case and the exhaust structure to which they are applied are of great industrial value, and applications are made according to law. This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application. 13 1337942 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a printing ink cartridge according to a preferred embodiment of the present invention. FIG. 2(a) is a schematic structural view of the cover body shown in the first figure. . Second figure (b): It is a schematic structural view of the valve sheet layer shown in the first figure. Fig. 4(4): It is a schematic structural view of the upper cover shown in the figure.
第，圖（a):其係為第一圖之蓋體之組裝示意圖。 =-圖（b) ·其係為第—圖之排氣結構之剖面 圖第四_其係為第三圖_示之排氣結構之未作動;圖意 第四圖（b) 圖。 其係為第三圖(b)所示之排氣結構之作動示意 第五圖 圖0 其係為第—圖所示之底部排氣結構之結構示意 1337942First, Figure (a): This is a schematic view of the assembly of the cover of the first figure. =-Fig. (b) · It is the cross section of the exhaust structure of the first figure. Figure 4 is the third figure _ shows the exhaust structure is not activated; the figure is the fourth figure (b). It is shown as the operation of the exhaust structure shown in the third figure (b). Figure 5 is a schematic diagram of the structure of the bottom exhaust structure shown in the first figure.
【主要元件符號說明】 I :列印墨匣 II :蓋體 13 :上封蓋 15 :排氣通道 18 :下封蓋 III :連通孔 113 :第一密封環 115 :第一凹槽 117 :凸柱 121、171 :閥片結構 121a :鏤空孔洞 131 :第三凹槽 133 :連通空間 161 :第四凹槽 10A、19 :排氣結構 12、17 :閥片層 14 :供墨管 16 :墨匣本體 110 :注墨孔 112、162 :抽氣孔 114 :第二密封環 116 :第二凹槽 118 :上表面 122 :定位孔 121b :延伸部 132 :凹陷結構 134 :第三密封環 163 :第四密封環[Description of main component symbols] I: Printing ink cartridge II: cover 13: upper cover 15: exhaust passage 18: lower cover III: communication hole 113: first seal ring 115: first groove 117: convex Columns 121, 171: valve plate structure 121a: hollow hole 131: third groove 133: communication space 161: fourth groove 10A, 19: exhaust structure 12, 17: valve sheet layer 14: ink supply tube 16: ink匣 body 110: priming hole 112, 162: venting hole 114: second sealing ring 116: second groove 118: upper surface 122: locating hole 121b: extending portion 132: recessed structure 134: third sealing ring 163: Four seal ring
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