M3 03 83 3 八、新型說明： 【新型所屬之技術領域】 本創作係有關於一種免開加油蓋之油蓋構造，特別是 指可供作為油箱使用之免開加油蓋，藉以可平衡油箱内疋 外之壓力差，以確保使用上之安全者。 目 【先前技術】 按，目前一般車輛所常見之加油蓋構造，其係可區分 為開啟式加油蓋及免開式加油蓋，其中開啟式加油蓋之才^ 造，其係直接利用一密閉式之蓋體，旋緊於加油口位置處， 欲加油時則需旋鬆蓋體，藉以供油槍可伸入於加油口内進 行加油之作業；又免開式之加油蓋構造，如中華民國新型 公告第358426號「加油蓋之改良構造」專利案，其主要係 設有一本體，以供旋緊於加油口之位置處，再設有一加油 口蓋，而旋緊於本體上，該加油口蓋中間設有圓形之洞口， 另於本體上利用彈性元件樞接有一活動蓋板，藉以封閉加 油口 ’當加油時，直接以油槍由加油口蓋之洞口伸入，並 頂開活動蓋板，而得以於加油口内直接進行加油之作業， 然’如此之構造，容易因活動蓋板密封住加油口，當加油 口内之油氣壓力，一旦與外界之大氣壓力不平均形成壓力 差’以致供輸油造成失調，而影響引擎之正常運轉，嚴重 者造成油箱氣爆傷人或機件損壞。 【新型内容】 菱此’有鑑於目前習知之免開式加油蓋構造，於使用 一、有潛在之危險性，故本創作係在提供一種免開加油蓋 5 M3 03 83 3 之油蓋構造，係在於座體上設有方向相反之進氣道及排氣 道，該進氣道及排氣道之一端分別於座體之底面及頂面位 置處設有直徑較小之進氣孔及排氣孔，其中進氣道及排氣 道内分別设入有氣墊、定位套、彈簧，最後再以抵止塊塞 入固定於進氣道及排氣道内，其中該定位套上設有卡孔， 以供氣墊定位於其中，又彈簣之一端則抵靠於氣墊上，另 化則抵罪於抵止塊’又抵止塊上則設有透孔，另於進氣 道及排氣道之進氣孔及排氣孔之周緣接設有相連通之槽 道。 本創作具有下列之優點： 1·本創作係於免開加油蓋之座體上，分別設有方向相 反之進氣道及排氣道，當外界之大氣壓力大於油箱内之壓 力時，空氣可由進氣道進入到油箱内部，又當油箱内之壓 力大於外界之大氣壓力時，則可由排氣道將空氣排出，以 平衡油箱内、外之壓力差，以確保使用安全。 2·本創作並藉由進氣道及排氣道，而平衡油箱内之壓 力差，可以使供油順暢，並且避免機件因壓力差而損壞， 以延長使用壽命。 【實施方式】 首先，請參閱第一、二圖所示，本創作主要係包括有 座體（1)、加油口蓋（2)及蓋板座（3)，其中： 座體（1)，其係設有一通孔（11)，又座體頂端及底端 分別設有第一卡合部（12)及第二卡合部（13)，另於座體（1) 上設有一方向相反之進氣道（14)及排氣道（15)，該進氣道 M3 03 83 3 (14) 及排氣道（15)之一端分別於座體（1)之底面及頂面位 置處設有直徑較小之進氣孔（141)及排氣孔（151)，其中進 氣道（14)及排氣道（15)内分別依序設入有一氣墊（142)、 (152)、一 定位套（143)、（153)、一彈簧（144)、（154)，最 後再以一抵止塊（145)、（155)塞入固定於進氣道（14)及排 氣道（15)内，其中該定位套（143)、（153)上設有一卡孔 (146)、（156)，以供氣墊（142)、（152)定位於其中，又彈 簧（144)、（154)之一端則抵靠於氣墊（142)、（152)上，另 一端則抵靠於抵止塊（145)、（155)，又抵止塊（145)、（155) 上則設有一透孔（147)、（157),另於進氣道（14)及排氣道 (15) 之進氣孔（141)及排氣孔（151)之周緣接設有相連通之 槽道（16)、（17)〔請參考第一、三圖所示〕。 加油口蓋（2)，其底端係設有第三卡合部（21)，而供卡 合於本體（1)之第一卡合部（12)上，該加油口蓋（2)中間位 置處則設有一開口（22) 〇 蓋板座（3)，其頂端則設有第四卡合部（31)，而供卡合 於本體（1)之第二卡合部（12)上，該蓋板座（3)内係樞接有 一活動蓋板（32)。 使用時，如第四圖所示，加油時，油槍係可直接伸入 通過加油口蓋（2)之開口（22)及座體（1)之通孔（η)，而頂 開該蓋板座（3)内之活動蓋板（32)，以供進行加油作業。 當外界之大氣壓力大於油箱内之壓力時，如第五圖所 示’則因壓力差而使油箱内部產生吸力，則進氣道（14 )内 之氣墊（142)則可被吸引而移動，並且壓縮彈簧（144)，此 7 M303833 氣墊（142)不再抵壓封閉進氣孔（141)，而使外界之空氣可 依序經由槽道（16)及進氣孔（141)進入，而通過進氣道（14) 及抵止塊（145)之透孔（147)，並由槽道（17)進入到油箱内 部，藉以平衡壓力差。 又當油箱内之壓力大於外界之大氣壓力時，如第六圖 所示，則因壓力差而使油箱内部產生推力，則排氣道（15) 内之氣墊（152)則可被推壓而移動，並且壓縮彈簧（154)， 此氣墊（152)不再抵壓封閉出氣孔（15〗），而使油箱内之空 氣可經由槽道（16)而通過排氣道（15)，依序由抵止塊（155) 之透孔（157)及槽道（17)排出，並使過大之壓力排出到油箱 外部，藉以平衡壓力差。 【圖式簡單說明】 第一圖係為本創作之立體分解示意圖。 第二圖係為本創作之組合剖視圖。 第二圖係為本創作之座體底部示意圖。 第四圖係為本創作活動蓋板之作動示意圖。 第五圖係為本創作之進氣作動示意圖。 苐/、圖係為本創作之排氣作動 示意圖。 【主要元件符號說明】 (1) 座體 (11) 通孔 (12) 第—^合部 (13) 第二卡合部 (14) 進氣道 (141) 進氣孔 (142) 氣墊. (143) 定位套 (144) 彈簧 (145) 抵止塊 M3 03 83 3 (146) 卡孔 (15) 排氣道 (151) 排氣孔 (153) 定位套 (155) 抵止塊 (157) 透孔 (17) 槽道 (21) 第三卡合部 (3) 蓋板座 (32) 活動蓋板 (147) 透孔 (152) 氣墊 (154) 彈簧 (156) 卡孔 (16) 槽道 (2) 加油口蓋 (22) 開口 (31) 第四卡合部M3 03 83 3 VIII. New description: [New technical field] This creation is about the oil cover structure of the fuel-free cover, especially the oil-free cover that can be used as a fuel tank, so that the fuel tank can be balanced. The pressure difference outside the sputum to ensure the safety of the use. [Previous technology] According to the current fueling cap structure commonly used in general vehicles, it can be divided into an open fueling cap and an open-type fueling cap, in which the open fueling cap is made, and the system directly utilizes a closed type. The cover body is screwed tightly at the position of the fuel filler port. When the oil is to be refueled, the cover body needs to be loosened, so that the oil gun can be inserted into the fuel filler port for refueling operation; and the fuel filler cap structure is not opened, such as the new Republic of China. Announcement No. 358426, "Improved Structure of Fueling Cap" patent case, which is mainly provided with a body for screwing at the position of the fuel filler port, and then a fuel filler cap is attached to the body, and the fuel filler cap is provided in the middle There is a circular opening, and a movable cover is pivotally connected to the main body by the elastic member, thereby closing the fueling port. When the fuel is refueled, the oil gun is directly inserted into the opening of the fuel filler opening, and the movable cover is opened. The oiling operation is directly carried out in the fuel filler port. However, it is easy to seal the fuel filler port due to the movable cover plate. When the oil pressure in the fuel filler port is reached, the atmospheric pressure with the outside world is uneven. The pressure difference is so that the oil supply is misaligned, which affects the normal operation of the engine. In severe cases, the fuel tank is damaged or the parts are damaged. [New content] In view of the current open-type fuel cap structure, it is potentially dangerous. Therefore, the author is providing an oil cap structure that is free of the fuel cap 5 M3 03 83 3 . The air inlet and the exhaust passage are oppositely arranged on the seat body, and one end of the air inlet and the exhaust passage are respectively provided with a small diameter air inlet hole and a row at the bottom surface and the top surface position of the seat body a gas hole, wherein an air cushion, a positioning sleeve and a spring are respectively disposed in the air inlet and the exhaust passage, and finally, the air inlet and the air outlet are fixed by the abutting block, wherein the positioning sleeve is provided with a card hole. The air cushion is positioned in the air cushion, and one end of the magazine is pressed against the air cushion, and the other is sinned against the resisting block, and the through hole is provided on the block, and the air inlet and the exhaust duct are further advanced. The peripheral edges of the air vent and the vent hole are connected to each other. This creation has the following advantages: 1. The creation is on the seat of the fuel-free cover, and the inlet and exhaust channels are oppositely arranged. When the atmospheric pressure is greater than the pressure in the tank, the air can be When the inlet enters the inside of the tank, and when the pressure in the tank is greater than the atmospheric pressure outside the outside, the air can be exhausted by the exhaust passage to balance the pressure difference between the inside and outside of the tank to ensure safe use. 2. This creation uses the intake and exhaust passages to balance the pressure difference in the fuel tank, which makes the oil supply smooth and avoids damage to the machine due to pressure difference to prolong the service life. [Embodiment] First, as shown in the first and second figures, the present invention mainly includes a seat body (1), a fuel filler cap (2) and a cover seat (3), wherein: the seat body (1), A through hole (11) is provided, and the first engaging portion and the bottom end are respectively provided with a first engaging portion (12) and a second engaging portion (13), and the base body (1) is provided with an opposite direction. Intake port (14) and exhaust passage (15), one end of the inlet passage M3 03 83 3 (14) and the exhaust passage (15) are respectively disposed at a bottom surface and a top surface position of the seat body (1) a small diameter air inlet hole (141) and a vent hole (151), wherein an air cushion (142), (152), and a positioning are respectively disposed in the air inlet passage (14) and the exhaust passage (15). The sleeves (143), (153), a spring (144), (154) are finally fixed to the intake passage (14) and the exhaust passage (15) by abutting blocks (145), (155). Inside, the positioning sleeves (143), (153) are provided with a card hole (146), (156) for the air cushions (142), (152) to be positioned therein, and the springs (144), (154) One end abuts against the air cushions (142), (152), and the other end abuts against (145), (155), and the through holes (145) and (155) are provided with a through hole (147), (157), and the inlet (14) and the exhaust passage (15). The peripheral edges of the air hole (141) and the vent hole (151) are connected to the channels (16) and (17) which are in communication (please refer to the first and third figures). The fuel filler cap (2) is provided with a third engaging portion (21) at the bottom end thereof for engaging with the first engaging portion (12) of the body (1) at a position intermediate the filler cap (2) There is an opening (22) 〇 cover seat (3), the top end of which is provided with a fourth engaging portion (31) for engaging with the second engaging portion (12) of the body (1), A movable cover (32) is pivotally connected to the cover seat (3). When in use, as shown in the fourth figure, when refueling, the oil gun can directly extend into the opening (22) through the filler cap (2) and the through hole (η) of the seat (1), and open the cover. The movable cover (32) in the seat (3) for refueling work. When the atmospheric pressure of the outside is greater than the pressure in the fuel tank, as shown in the fifth figure, the suction force is generated inside the fuel tank due to the pressure difference, and the air cushion (142) in the air inlet passage (14) can be attracted and moved. And the compression spring (144), the 7 M303833 air cushion (142) no longer presses the closed air inlet hole (141), so that the outside air can enter through the channel (16) and the air inlet hole (141) sequentially, and Through the inlet (14) and the through hole (147) of the abutting block (145), and through the channel (17) into the tank, thereby balancing the pressure difference. When the pressure in the fuel tank is greater than the atmospheric pressure of the outside world, as shown in the sixth figure, the thrust inside the fuel tank is generated due to the pressure difference, and the air cushion (152) in the exhaust passage (15) can be pushed. Moving, and compressing the spring (154), the air cushion (152) no longer presses the closed air outlet (15), so that the air in the oil tank can pass through the air passage (15) through the channel (16), in order The through hole (157) and the channel (17) of the abutting block (155) are discharged, and excessive pressure is discharged to the outside of the tank to balance the pressure difference. [Simple description of the diagram] The first diagram is a three-dimensional decomposition diagram of the creation. The second figure is a sectional view of the combination of the creation. The second picture is a schematic diagram of the bottom of the seat of the creation. The fourth picture is a schematic diagram of the actuation of the cover of the creative activity. The fifth picture is a schematic diagram of the intake of the creation.苐/, the diagram is a schematic diagram of the exhaust operation of the creation. [Description of main component symbols] (1) Seat body (11) Through hole (12) First-compartment part (13) Second engaging part (14) Intake port (141) Air intake hole (142) Air cushion. ( 143) Positioning sleeve (144) Spring (145) Abutment block M3 03 83 3 (146) Card hole (15) Exhaust passage (151) Exhaust hole (153) Positioning sleeve (155) Resisting block (157) Hole (17) Channel (21) Third engaging part (3) Cover seat (32) Movable cover (147) Through hole (152) Air cushion (154) Spring (156) Card hole (16) Channel ( 2) Fuel filler cap (22) Opening (31) Fourth engaging part