JP2016044792A - tank - Google Patents

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JP2016044792A
JP2016044792A JP2014171630A JP2014171630A JP2016044792A JP 2016044792 A JP2016044792 A JP 2016044792A JP 2014171630 A JP2014171630 A JP 2014171630A JP 2014171630 A JP2014171630 A JP 2014171630A JP 2016044792 A JP2016044792 A JP 2016044792A
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seal member
tank
fiber bundle
dome
peripheral side
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JP6323254B2 (en
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洋介 深谷
Yosuke Fukaya
洋介 深谷
文武 菅内
Fumitake Sugauchi
文武 菅内
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

PROBLEM TO BE SOLVED: To suppress the displacement of a fiber bundle to the outside of a radial direction of a tank.SOLUTION: A tank comprises: a liner having a curved-face dome part at an end part; a mouthpiece arranged at the dome part; an annular seal member on a surface of the dome part which covers a boundary between the dome part and the mouthpiece; and a fiber bundle which is helically wound on the seal member and the liner. The seal member of the tank has an inclined part in which a thickness of the seal member is gradually increased toward an external peripheral side from an internal peripheral side of the seal member, and at least a part of a center of the fiber bundle in a width direction is located on the internal peripheral side of the seal member rather than an external peripheral side end part of the inclined part.SELECTED DRAWING: Figure 3

Description

本発明は、タンクに関する。   The present invention relates to a tank.

タンクに関し、特許文献１には、口金を有するライナーのドーム部上に繊維束をヘリカル巻で巻回する技術が開示されている。また、特許文献２には、曲面状のドーム部に開口部を有するタンクにおいて、開口部に口金を取付け、タンク表面上におけるタンクと口金との境界に樹脂系シール部材を塗布する技術が開示されている。   Regarding the tank, Patent Document 1 discloses a technique for winding a fiber bundle on a dome portion of a liner having a base by helical winding. Patent Document 2 discloses a technique in which a base having an opening in a curved dome is provided with a base attached to the opening, and a resin seal member is applied to the boundary between the tank and the base on the tank surface. ing.

国際公開第２０１０／１１６５２７号International Publication No. 2010/116527 特開２０１２−２２５３７３号公報JP 2012-225373 A

しかしながら、特許文献１に開示された技術でも、特許文献２に開示された技術でも、タンクのドーム部に繊維束をヘリカル巻きする際に繊維束が滑ることが想定されていない。そのため、タンクのドーム部に繊維束をヘリカル巻きした場合に、ドーム部が曲面状のため、シール部材の厚みや形状によっては、繊維束がドーム部の径方向外側へずれるおそれがあった。   However, neither the technique disclosed in Patent Document 1 nor the technique disclosed in Patent Document 2 assumes that the fiber bundle slips when the fiber bundle is helically wound around the dome portion of the tank. For this reason, when the fiber bundle is helically wound around the dome portion of the tank, the dome portion has a curved surface. Therefore, depending on the thickness and shape of the seal member, the fiber bundle may be displaced radially outward of the dome portion.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の形態として実現することが可能である。   SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

本発明の一形態によれば、タンクが提供される。このタンクは、端部に曲面状のドーム部を有するライナーと；前記ドーム部に配置された口金と；前記ドーム部の表面上における前記ドーム部と前記口金との境界を覆う環状のシール部材と；前記シール部材上および前記ライナー上にヘリカル巻きで巻回される繊維束と；を備え、前記シール部材は、前記シール部材の内周側から外周側へ向かって前記シール部材の厚みが漸増する傾斜部を有し、前記繊維束の幅方向の中心の少なくとも一部は、前記傾斜部の外周側端部よりも前記シール部材の内周側上に位置する。このような形態のタンクによれば、繊維束が受けるタンクの径方向外側へ向かう力を傾斜部によって低減させることができるため、繊維束がタンクの径方向外側へずれることをシール部材が平坦な場合に比べて抑制できる。   According to one aspect of the invention, a tank is provided. The tank includes a liner having a curved dome at an end; a base disposed in the dome; an annular sealing member that covers a boundary between the dome and the base on the surface of the dome A fiber bundle wound helically on the seal member and the liner, and the seal member gradually increases in thickness from the inner peripheral side to the outer peripheral side of the seal member. It has an inclined part, and at least a part of the center in the width direction of the fiber bundle is located on the inner peripheral side of the seal member relative to the outer peripheral side end of the inclined part. According to the tank of such a form, since the force toward the radially outer side of the tank received by the fiber bundle can be reduced by the inclined portion, the sealing member is flat to prevent the fiber bundle from shifting radially outward of the tank. It can be suppressed compared to the case.

本発明は、上述したタンクとしての形態に限らず、種々の形態で実現することが可能である。例えば、タンクの製造方法や繊維束の巻回方法等の形態で実現することができる。   The present invention is not limited to the form of the tank described above, and can be implemented in various forms. For example, it is realizable with forms, such as a manufacturing method of a tank, and a winding method of a fiber bundle.

第１実施形態におけるタンクを模式的に示す図である。It is a figure which shows typically the tank in 1st Embodiment. 図１におけるＸ矢視図である。FIG. 2 is a view taken in the direction of arrow X in FIG. 1. 図２における３−３断面を模式的に示す図である。It is a figure which shows typically the 3-3 cross section in FIG. 図２における３−３断面付近を模式的に示す斜視図である。FIG. 3 is a perspective view schematically showing the vicinity of a 3-3 cross section in FIG. 2. 傾斜部がないタンクの断面を模式的に示す図である。It is a figure which shows typically the cross section of a tank without an inclination part. シール部材の断面形状の他の例を示す図である。It is a figure which shows the other example of the cross-sectional shape of a sealing member. 第２実施形態におけるタンクの断面を模式的に示す図である。It is a figure which shows typically the cross section of the tank in 2nd Embodiment.

Ａ．第１実施形態
図１は、第１実施形態におけるタンクを模式的に示す図である。図２は、図１におけるＸ矢視図である。タンク１は、ライナー１０と、繊維束２０と、口金３０と、シール部材４０と、を備える。タンク１は、高圧（７０ＭＰａ）の水素ガスを貯蔵する。タンク１は、一端に口金３０を有し、両端が曲面状に形成された円筒形状をなす。タンク１は、例えば長尺のタンクであり、タンク１の長さは１ｍから２ｍであり、タンク１の長さＬとタンク１の直径Ｄとの関係はＬ／Ｄ＞２である。なお、図１では繊維束２０についてはその一部を示している。 A. First Embodiment FIG. 1 is a diagram schematically illustrating a tank according to a first embodiment. FIG. 2 is a view taken in the direction of arrow X in FIG. The tank 1 includes a liner 10, a fiber bundle 20, a base 30, and a seal member 40. The tank 1 stores high-pressure (70 MPa) hydrogen gas. The tank 1 has a cap 30 at one end and has a cylindrical shape with both ends formed in a curved shape. The tank 1 is, for example, a long tank, the length of the tank 1 is 1 m to 2 m, and the relationship between the length L of the tank 1 and the diameter D of the tank 1 is L / D> 2. In FIG. 1, a part of the fiber bundle 20 is shown.

ライナー１０は、例えば、ポリエチレン、ナイロン、ポリプロピレン、ポリエステル等の熱可塑性樹脂によって形成されている。ライナー１０は、円筒形状であるストレート部１１と、ストレート部１１の両端に曲面状に形成された第１ドーム部１２および第２ドーム部１３と、を有する。第１ドーム部１２は、口金３０を挿入するための開口部１４が形成されている。開口部１４の内周は、口金３０の外形形状と対応するように歯車状に形成されている。開口部１４の内周が歯車状であると、繊維束２０の巻回時において、口金３０を把持してタンク１を回転させる際にライナー１０が空転してしまうことが抑制される。   The liner 10 is made of a thermoplastic resin such as polyethylene, nylon, polypropylene, or polyester. The liner 10 includes a straight portion 11 having a cylindrical shape, and a first dome portion 12 and a second dome portion 13 formed in curved shapes at both ends of the straight portion 11. The first dome portion 12 has an opening 14 for inserting the base 30. The inner periphery of the opening 14 is formed in a gear shape so as to correspond to the outer shape of the base 30. When the inner periphery of the opening 14 is gear-shaped, it is possible to prevent the liner 10 from idling when the fiber bundle 20 is wound and the tank 1 is rotated while holding the base 30.

口金３０は、例えば、アルミニウムやステンレススチール等の金属によって形成されている。口金３０の外形形状は、漏斗状であり、径が最も大きい大径部分の外形は歯車状をなしている。口金３０は、大径部分において第１ドーム部１２の開口部１４と嵌合している。口金３０には、軸中心に孔が形成されており、タンク１内の高圧ガスを減圧して取り出すためのバルブが孔に挿入される。   The base 30 is made of, for example, a metal such as aluminum or stainless steel. The outer shape of the base 30 is a funnel shape, and the outer shape of the large diameter portion having the largest diameter is a gear shape. The base 30 is fitted to the opening 14 of the first dome portion 12 at the large diameter portion. A hole is formed at the center of the base 30 in the base 30, and a valve for taking out the high-pressure gas in the tank 1 by depressurizing is inserted into the hole.

シール部材４０は、例えば、フッ素系、ニトリル系、シリコン系、ウレタン系等の樹脂によって形成されている。樹脂は、弾性を有することが好ましい。シール部材４０の摩擦係数は、第１ドーム部１２および口金３０の摩擦係数よりも大きい。シール部材４０は、第１ドーム部１２の表面上における第１ドーム部１２と口金３０との境界５０を覆うように境界５０上に接着されており、境界５０からガスが漏れ出ることを抑制している。図２に示すようにシール部材４０は、環状であり、シール部材４０の内周側端部は口金３０上に位置し、シール部材４０の外周側端部は第１ドーム部１２上に位置する。   The seal member 40 is made of, for example, a resin such as fluorine, nitrile, silicon, or urethane. The resin preferably has elasticity. The friction coefficient of the seal member 40 is larger than the friction coefficient of the first dome portion 12 and the base 30. The seal member 40 is bonded on the boundary 50 so as to cover the boundary 50 between the first dome portion 12 and the base 30 on the surface of the first dome portion 12, and suppresses gas from leaking from the boundary 50. ing. As shown in FIG. 2, the seal member 40 is annular, and the inner peripheral side end of the seal member 40 is located on the base 30, and the outer peripheral side end of the seal member 40 is located on the first dome portion 12. .

繊維束２０は、例えば、ガラス繊維や炭素繊維を１００００〜４００００本程度束ね、エポキシ等の熱硬化性樹脂を含浸させることによって形成されている。本実施形態では、繊維束２０は、シール部材４０およびライナー１０上にヘリカル巻きで巻回される。具体的には、繊維束２０は、タンク１の中心軸Ｏに対して０〜３０度の巻回角度で第１ドーム部１２および第２ドーム部１３を含む範囲に低角度ヘリカル巻きによって巻回される。図２に示すように、繊維束２０の幅方向の中心の少なくとも一部は、シール部材４０および傾斜部４２の外周側端部であるシール部材４０の頂点４１（詳細は後述）を横断するように巻回される。また、繊維束２０は、タンク１の中心軸Ｏに対して８０〜９０度の巻回角度でストレート部１１を周方向へ巻回するフープ巻きによって巻回される。なお、繊維束２０は、複数の繊維に熱硬化性樹脂を予め含浸させて、半硬化もしくは乾燥させたプリプレグであってもよい。   The fiber bundle 20 is formed, for example, by bundling about 10,000 to 40,000 glass fibers and carbon fibers and impregnating a thermosetting resin such as epoxy. In this embodiment, the fiber bundle 20 is wound on the seal member 40 and the liner 10 by helical winding. Specifically, the fiber bundle 20 is wound by low-angle helical winding in a range including the first dome portion 12 and the second dome portion 13 at a winding angle of 0 to 30 degrees with respect to the central axis O of the tank 1. Is done. As shown in FIG. 2, at least a part of the center of the fiber bundle 20 in the width direction crosses the apex 41 (details will be described later) of the seal member 40 that is the outer peripheral side end of the seal member 40 and the inclined portion 42. Wound around. The fiber bundle 20 is wound by hoop winding that winds the straight portion 11 in the circumferential direction at a winding angle of 80 to 90 degrees with respect to the central axis O of the tank 1. The fiber bundle 20 may be a prepreg in which a plurality of fibers are impregnated with a thermosetting resin in advance and semi-cured or dried.

図３は、図２における３−３断面を模式的に示す図である。図４は、図２における３−３断面付近を模式的に示す斜視図である。３−３断面は、タンク１の中心軸Ｏと、繊維束２０がタンク１の中心軸Ｏに最近接する地点と、を通る断面である。なお、図３、図４は、タンク１の中心軸Ｏに最近接する繊維束２０を１本のみ示している。   FIG. 3 is a diagram schematically showing a 3-3 cross section in FIG. 2. FIG. 4 is a perspective view schematically showing the vicinity of the 3-3 cross section in FIG. The 3-3 cross section is a cross section passing through the central axis O of the tank 1 and the point where the fiber bundle 20 is closest to the central axis O of the tank 1. 3 and 4 show only one fiber bundle 20 that is closest to the central axis O of the tank 1.

第１ドーム部１２には、口金３０が嵌合する部分に凹部１５が形成されている。口金３０は、第１ドーム部１２の表面上における第１ドーム部１２と口金３０との境界５０において段差がないように凹部１５に嵌合している。   A recess 15 is formed in the first dome portion 12 at a portion where the base 30 is fitted. The base 30 is fitted in the recess 15 so that there is no step at the boundary 50 between the first dome part 12 and the base 30 on the surface of the first dome part 12.

シール部材４０は、シール部材４０の内周側（図３における下方）の端部から外周側（図３における上方）へ向かって厚みが漸増し、その後増加割合が緩やかとなり、シール部材４０の頂点４１で厚みが最大となる傾斜部４２を有している。シール部材４０の厚みは、傾斜部４２から外周側へ向かって緩やかに漸減し、その後減少割合が増加する。つまり、本実施形態のシール部材４０の断面形状は、短辺が円弧状である略台形状となる。また、シール部材４０の頂点４１は、第１ドーム部１２をタンク１の中心軸Ｏ方向から見たときに、第１ドーム部１２と口金３０との境界５０付近に対応するように円形に配置されている（図２参照）。なお、シール部材４０の最大厚みは数ｍｍ程度である。この場合において、繊維束２０の幅方向の中心の少なくとも一部は、傾斜部４２の外周側端部であるシール部材４０の頂点４１よりもシール部材４０の内周側上に位置する。   The thickness of the sealing member 40 gradually increases from the inner peripheral side (lower side in FIG. 3) of the sealing member 40 toward the outer peripheral side (upper side in FIG. 3). 41 has an inclined portion 42 having a maximum thickness. The thickness of the seal member 40 gradually decreases gradually from the inclined portion 42 toward the outer peripheral side, and then the reduction rate increases. That is, the cross-sectional shape of the seal member 40 of the present embodiment is a substantially trapezoidal shape with a short side having an arc shape. The apex 41 of the seal member 40 is arranged in a circle so as to correspond to the vicinity of the boundary 50 between the first dome portion 12 and the base 30 when the first dome portion 12 is viewed from the direction of the central axis O of the tank 1. (See FIG. 2). The maximum thickness of the seal member 40 is about several mm. In this case, at least a part of the center in the width direction of the fiber bundle 20 is located on the inner peripheral side of the seal member 40 relative to the vertex 41 of the seal member 40 that is the outer peripheral side end of the inclined portion 42.

次に、図５と図３を用いて本実施形態の利点を説明する。図５は、傾斜部がないタンクの断面を模式的に示した説明図である。繊維束２０には、ヘリカル巻きの巻回張力Ｔ１が加えられている。巻回張力Ｔ１は、繊維束２０と口金３０との接触部においてタンク１の径方向外側へと滑る力Ｔ２と接触部に垂直な力Ｔ３とに分解できる。つまり、繊維束２０はタンク１の径方向外側へと滑る力Ｔ２を受けている。そのため、繊維束２０はタンク１の径方向外側へと滑るおそれがある。   Next, advantages of the present embodiment will be described with reference to FIGS. FIG. 5 is an explanatory view schematically showing a cross section of a tank without an inclined portion. A helical winding tension T <b> 1 is applied to the fiber bundle 20. The winding tension T1 can be decomposed into a force T2 that slides outward in the radial direction of the tank 1 at a contact portion between the fiber bundle 20 and the base 30 and a force T3 that is perpendicular to the contact portion. That is, the fiber bundle 20 receives a force T2 that slides outward in the radial direction of the tank 1. Therefore, there is a possibility that the fiber bundle 20 slips outward in the radial direction of the tank 1.

一方、図３で示すように、本実施形態では、繊維束２０はシール部材４０の傾斜部４２上に配置されている。そのため、傾斜部４２がない場合と比べて、繊維束２０の接触部において繊維束２０が受けるタンク１の径方向外側へと滑る力Ｔ２が、傾斜部４２によって低減されている。従って、本実施形態によれば、繊維束２０がタンク１の径方向外側へずれることを抑制できる。なお、繊維束２０の接触部における繊維束２０が受ける力が接触部に対して垂直に近いほど、繊維束２０がタンク１の径方向外側へずれることをより抑制することが可能である。   On the other hand, as shown in FIG. 3, in this embodiment, the fiber bundle 20 is disposed on the inclined portion 42 of the seal member 40. Therefore, compared with the case where there is no inclined portion 42, the inclined portion 42 reduces the force T <b> 2 that slides outward in the radial direction of the tank 1 received by the fiber bundle 20 at the contact portion of the fiber bundle 20. Therefore, according to the present embodiment, it is possible to suppress the fiber bundle 20 from shifting to the radially outer side of the tank 1. In addition, it is possible to suppress the fiber bundle 20 from being displaced outward in the radial direction of the tank 1 as the force received by the fiber bundle 20 at the contact portion of the fiber bundle 20 is closer to the contact portion.

図６は、シール部材の断面形状の他の例を示す図である。本実施形態では、シール部材４０の断面形状は短辺に円弧を有する略台形状であったが、例えば、図６で示すように、シール部材の断面形状は円弧状であってもよい。   FIG. 6 is a diagram illustrating another example of the cross-sectional shape of the seal member. In the present embodiment, the cross-sectional shape of the seal member 40 is a substantially trapezoidal shape having an arc on the short side. For example, as shown in FIG. 6, the cross-sectional shape of the seal member may be an arc shape.

Ｂ．第２実施形態
図７は、第２実施形態におけるタンクの断面図を模式的に示す図である。図７は、タンク１の中心軸Ｏと、繊維束２０がタンク１の中心軸Ｏに最近接する地点と、を通る断面を示す。図７において、第１実施形態の説明に用いたものと同じ符号により示される各構成要素については、第１実施形態における各構成要素と実質的に同一なものを示すものとする。第２実施形態においては、シール部材４０ａの断面形状が、円弧を有した略台形状ではなく、三角形である。具体的には、シール部材４０ａの厚みは、シール部材４０ａの内周側端部からシール部材４０ａの頂点４１ａまで漸増し、その後シール部材４０ａの外周側端部まで漸減する。繊維束２０の幅方向の中心の少なくとも一部は、シール部材４０ａの内周側端部からシール部材４０ａの頂点４１ａまでの間に形成された傾斜部４２ａ上に位置する。つまり、繊維束２０の幅方向の中心の少なくとも一部は、傾斜部４２ａの外周側端部であるシール部材４０ａの頂点４１ａよりもシール部材４０ａの内周側上に位置する。また、シール部材４０の頂点４１はシール部材４０の断面の中央より第１ドーム部１２寄りに位置する。そのため、断面における傾斜部４２ａの表面部分の長さは、傾斜部４２ａ以外の表面部分の長さより大きい。これらのことから、傾斜部４２ａは、第１実施形態の傾斜部４２よりも平面となる表面部分の面積が広くなっている。これにより、繊維束２０の幅が広い場合でも、繊維束２０を傾斜部４２上に安定して配置することができ、繊維束２０がタンク１の径方向の外側へずれることを抑制できる。 B. Second Embodiment FIG. 7 is a diagram schematically showing a cross-sectional view of a tank according to a second embodiment. FIG. 7 shows a cross section passing through the central axis O of the tank 1 and the point where the fiber bundle 20 is closest to the central axis O of the tank 1. In FIG. 7, components indicated by the same reference numerals as those used in the description of the first embodiment are substantially the same as the components in the first embodiment. In the second embodiment, the cross-sectional shape of the seal member 40a is not a substantially trapezoidal shape having an arc, but a triangle. Specifically, the thickness of the seal member 40a gradually increases from the inner peripheral end of the seal member 40a to the apex 41a of the seal member 40a and then gradually decreases to the outer peripheral end of the seal member 40a. At least a part of the center in the width direction of the fiber bundle 20 is located on an inclined portion 42a formed between the inner peripheral side end of the seal member 40a and the vertex 41a of the seal member 40a. That is, at least a part of the center in the width direction of the fiber bundle 20 is located on the inner peripheral side of the seal member 40a with respect to the vertex 41a of the seal member 40a that is the outer peripheral side end of the inclined portion 42a. The apex 41 of the seal member 40 is located closer to the first dome portion 12 than the center of the cross section of the seal member 40. Therefore, the length of the surface portion of the inclined portion 42a in the cross section is larger than the length of the surface portion other than the inclined portion 42a. For these reasons, the inclined portion 42a has a larger surface area than the inclined portion 42 of the first embodiment. Thereby, even when the width of the fiber bundle 20 is wide, the fiber bundle 20 can be stably disposed on the inclined portion 42, and the fiber bundle 20 can be prevented from being displaced outward in the radial direction of the tank 1.

Ｃ．変形例
＜変形例１＞
上記実施形態では、繊維束２０は、第１ドーム部１２およびシール部材４０上に巻回される例を示したが、シール部材４０が接着されていない口金３０上の部分を含んで巻回されてもよい。 C. Modification <Modification 1>
In the above embodiment, the fiber bundle 20 is wound around the first dome portion 12 and the seal member 40. However, the fiber bundle 20 is wound around the base 30 where the seal member 40 is not bonded. May be.

＜変形例２＞
上記実施形態では、タンク１に充填されるガスは水素であったが、ガスは水素に限られず、メタン、ＣＮＧ、窒素等を充填することも可能である。また、タンク１に充填されるものは液体水素等の液体であってもよい。また、上記実施形態では、タンク１に充填されるガスは高圧であったが、充填されるガスは低圧であってもよい。 <Modification 2>
In the above embodiment, the gas filled in the tank 1 is hydrogen. However, the gas is not limited to hydrogen, and methane, CNG, nitrogen, or the like can be filled. Moreover, what is filled in the tank 1 may be a liquid such as liquid hydrogen. Moreover, in the said embodiment, although the gas with which the tank 1 is filled was high voltage | pressure, the gas to be filled may be low pressure | voltage.

＜変形例３＞
上記実施形態では、繊維束２０は、低角度ヘリカルで第１ドーム部１２および第２ドーム部１３に巻回される例を示したが、ヘリカル巻きの巻回角度はこれに限られない。繊維束２０は、タンク１の中心軸Ｏに対して３０〜７０度の巻回角度で巻回する中角度ヘリカル巻きおよび７０〜８０度の巻回角度で巻回する高角度ヘリカル巻きで第１ドーム部１２および第２ドーム部１３に巻回されていてもよい。 <Modification 3>
In the said embodiment, although the fiber bundle 20 showed the example wound around the 1st dome part 12 and the 2nd dome part 13 by a low angle helical, the winding angle of helical winding is not restricted to this. The fiber bundle 20 is a medium angle helical winding wound at a winding angle of 30 to 70 degrees with respect to the central axis O of the tank 1 and a high angle helical winding wound at a winding angle of 70 to 80 degrees. It may be wound around the dome part 12 and the second dome part 13.

＜変形例４＞
上記実施形態では、シール部材４０における傾斜部４２は、シール部材４０の内周側端部から形成されていたが、これに限られない。シール部材４０の内周側端部から外周側へ一定の範囲はシール部材４０の厚みが一定で、その後シール部材４０の厚みが増加して傾斜部が形成されてもよい。 <Modification 4>
In the said embodiment, although the inclined part 42 in the seal member 40 was formed from the inner peripheral side edge part of the seal member 40, it is not restricted to this. The thickness of the seal member 40 may be constant in a certain range from the inner peripheral side end of the seal member 40 to the outer peripheral side, and then the thickness of the seal member 40 may be increased to form an inclined portion.

＜変形例５＞
上記実施形態では、ライナー１０の開口部１４と嵌合する口金３０の大径部分の外形は歯車状であったが、大径部分の外形はこれに限られない。大径部分の外形は、多角形や楕円、円形であってもよい。 <Modification 5>
In the above embodiment, the outer diameter of the large-diameter portion of the base 30 fitted to the opening 14 of the liner 10 is a gear shape, but the outer diameter of the large-diameter portion is not limited to this. The outer diameter of the large diameter portion may be a polygon, an ellipse, or a circle.

本発明は、上述の実施形態や変形例に限られるものではなく、その趣旨を逸脱しない範囲において種々の構成で実現することができる。例えば、発明の概要の欄に記載した各形態中の技術的特徴に対応する実施形態あるいは変形例中の技術的特徴は、上述の課題の一部又は全部を解決するために、あるいは、上述の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことが可能である。また、その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除することが可能である。   The present invention is not limited to the above-described embodiments and modifications, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments or the modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

１…タンク
１０…ライナー
１１…ストレート部
１２…第１ドーム部
１３…第２ドーム部
１４…開口部
１５…凹部
２０…繊維束
３０…口金
４０、４０ａ…シール部材
４１、４１ａ…シール部材の頂点
４２、４２ａ…傾斜部
５０…境界
Ｏ…タンクの中心軸
Ｔ１、Ｔ２、Ｔ３…張力 DESCRIPTION OF SYMBOLS 1 ... Tank 10 ... Liner 11 ... Straight part 12 ... 1st dome part 13 ... 2nd dome part 14 ... Opening part 15 ... Recessed part 20 ... Fiber bundle 30 ... Base 40, 40a ... Seal member 41, 41a ... Apex of seal member 42, 42a ... inclined portion 50 ... boundary O ... center axis of tank T1, T2, T3 ... tension

Claims (1)

タンクであって、
端部に曲面状のドーム部を有するライナーと、
前記ドーム部に配置された口金と、
前記ドーム部の表面上における前記ドーム部と前記口金との境界を覆う環状のシール部材と、
前記シール部材上および前記ライナー上にヘリカル巻きで巻回される繊維束と、
を備え、
前記シール部材は、前記シール部材の内周側から外周側へ向かって前記シール部材の厚みが漸増する傾斜部を有し、
前記繊維束の幅方向の中心の少なくとも一部は、前記傾斜部の外周側端部よりも前記シール部材の内周側上に位置する、タンク。 A tank,
A liner having a curved dome at the end;
A base disposed in the dome,
An annular seal member that covers the boundary between the dome and the base on the surface of the dome;
A fiber bundle wound helically on the seal member and the liner;
With
The seal member has an inclined portion where the thickness of the seal member gradually increases from the inner peripheral side to the outer peripheral side of the seal member;
The tank, wherein at least a part of the center in the width direction of the fiber bundle is located on the inner peripheral side of the seal member with respect to the outer peripheral side end of the inclined portion.
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JP2017194150A (en) * 2016-04-14 2017-10-26 トヨタ自動車株式会社 Manufacturing method high-pressure gas tank
US10538029B2 (en) 2016-04-14 2020-01-21 Toyota Jidosha Kabushiki Kaisha Method of manufacturing high pressure gas tank
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US10704738B2 (en) 2017-04-18 2020-07-07 Toyota Jidosha Kabushiki Kaisha High-pressure vessel
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