JP5912882B2 - Filter device - Google Patents

Filter device Download PDF

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JP5912882B2
JP5912882B2 JP2012125625A JP2012125625A JP5912882B2 JP 5912882 B2 JP5912882 B2 JP 5912882B2 JP 2012125625 A JP2012125625 A JP 2012125625A JP 2012125625 A JP2012125625 A JP 2012125625A JP 5912882 B2 JP5912882 B2 JP 5912882B2
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skeleton
filter cloth
filter
flexible portion
flexible
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JP2013249782A (en
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健介 生越
健介 生越
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Nifco Inc
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Nifco Inc
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Priority to PCT/JP2013/003455 priority patent/WO2013179678A1/en
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  • Filtration Of Liquid (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

本発明は、自動車や自動二輪車の燃料タンク内に配置された燃料吸入口に装着されるフィルタ装置（サクションフィルタ）に関する。   The present invention relates to a filter device (suction filter) that is attached to a fuel suction port disposed in a fuel tank of an automobile or a motorcycle.

自動車や自動二輪車等の燃料タンク内に、燃料を内燃機関に供給するための燃料吸入口を設け、燃料内に混入した異物を除去するべく、燃料吸入口の開口端にフィルタ装置（サクションフィルタ）を装着したものがある。フィルタ装置は、骨格部材と、骨格部材を包み込んで袋状に形成された濾布と、濾布を貫通して濾布の内部と外部とを連通する接続管とを有し、接続管において燃料吸入口に接続するようにしたものがある。燃料吸入口の下流側にはポンプが設けられ、燃料タンク内の燃料は濾布を外部から内部へと通過し、接続管を通過して燃料吸入口へと吸入される。   A fuel intake port for supplying fuel to the internal combustion engine is provided in a fuel tank of an automobile or a motorcycle, and a filter device (suction filter) is provided at the open end of the fuel intake port in order to remove foreign matters mixed in the fuel. There is a thing equipped with. The filter device includes a skeleton member, a filter cloth formed in a bag shape so as to enclose the skeleton member, and a connection pipe that penetrates the filter cloth and communicates the inside and the outside of the filter cloth. Some are connected to the inlet. A pump is provided on the downstream side of the fuel inlet, and the fuel in the fuel tank passes through the filter cloth from the outside to the inside, passes through the connecting pipe, and is sucked into the fuel inlet.

このようなフィルタ装置において、装置の外形をコンパクトにしつつ、濾布の表面積（有効濾過面積）を増大させるために、濾布を骨格部材と共に折り返し、積層形態としたものがある（例えば、特許文献１）。特許文献１に係るフィルタ装置は、折り返した濾布の表面同士の接触を避けるために（濾布の互いに対向する表面間に空隙を形成するために）、互いに対向する骨格部材の一方に濾布を貫通して他方側へと突出する係止凸部を設け、骨格部材の他方に濾布を貫通して一方側へと突出した受容部を設け、係止凸部と受容部の結合によって骨格部材及び濾布を所定の積層形態に維持している。   In such a filter device, in order to increase the surface area (effective filtration area) of the filter cloth while making the outer shape of the device compact, there is one in which the filter cloth is folded together with a skeleton member to form a laminated form (for example, Patent Documents). 1). In order to avoid contact between the surfaces of the folded filter cloths (to form a gap between the surfaces of the filter cloths facing each other), the filter device according to Patent Document 1 uses a filter cloth on one of the skeletal members facing each other. A locking projection that protrudes to the other side through the boss, and a receiving portion that passes through the filter cloth and protrudes to the one side is provided on the other of the skeleton member. The member and the filter cloth are maintained in a predetermined laminated form.

特許第４７４９３１９号公報Japanese Patent No. 4749319

自動車等の燃料タンクは、走行中の振動や車体骨格の変形、空気抵抗によって変形し、燃料タンクと燃料吸入口の相対位置が変化するため、フィルタ装置と燃料タンクの内壁とが衝突し、衝突音が発生する虞がある。そのため、フィルタ装置を予め弾性変形させた状態で燃料タンクの内壁に接触させ、燃料タンクと燃料吸入口との相対位置が変化してもフィルタ装置が復元力により燃料タンクの内壁に追従し、フィルタ装置と燃料タンクの内壁とが接触が維持されるようにすることが好ましい。しかしながら、濾布及び骨格部材を積層形態にすると、フィルタ装置の可撓性が低下するため、フィルタ装置と燃料タンクの内壁との接触を維持することが困難になる。   Fuel tanks of automobiles, etc. are deformed by vibration during driving, deformation of the body frame, and air resistance, and the relative position of the fuel tank and the fuel inlet changes, so the filter device and the inner wall of the fuel tank collide, Sound may occur. Therefore, the filter device is brought into contact with the inner wall of the fuel tank in a state of being elastically deformed in advance, and the filter device follows the inner wall of the fuel tank by a restoring force even if the relative position between the fuel tank and the fuel suction port changes. It is preferable to maintain contact between the device and the inner wall of the fuel tank. However, when the filter cloth and the skeleton member are stacked, the flexibility of the filter device is lowered, so that it is difficult to maintain contact between the filter device and the inner wall of the fuel tank.

本発明は、以上の背景を鑑みてなされたものであって、積層形態をとるフィルタ装置において、燃料タンク内壁との接触を維持することができるようにすることを課題とする。   This invention is made in view of the above background, Comprising: In the filter apparatus which takes a lamination | stacking form, it makes it a subject to enable it to maintain a contact with the fuel tank inner wall.

上記課題を解決するために、本発明は、骨格部材（２）と、前記骨格部材を包み込む袋状に形成された濾布（３）と、前記濾布を貫通し、前記濾布の内部と外部とを連通する接続管（４）とを有し、前記接続管において、燃料タンク（１１０）内に配置された燃料吸入口（１０１）に接続されるフィルタ装置（１）であって、前記骨格部材は、第１の方向に沿って延在した第１骨格部（１１）と、前記第１骨格部の一端から前記第１の方向と異なる第２の方向に沿って突出した第２骨格部（１２）とを有し、前記第１骨格部は、その長手方向における中間部に弾性変形可能な第１可撓部（２１）を有し、前記第２骨格部は、前記接続管が結合されると共に、前記接続管と前記第１骨格部との間の部分に弾性変形可能な第２可撓部（３１）を有し、前記濾布によって包み込まれた前記骨格部材は、前記濾布と共に前記第１可撓部において折り曲げられることことを特徴とする。   In order to solve the above problems, the present invention relates to a skeleton member (2), a filter cloth (3) formed in a bag shape that wraps the skeleton member, the filter cloth penetrating, and the inside of the filter cloth; A filter device (1) having a connecting pipe (4) communicating with the outside, wherein the connecting pipe is connected to a fuel inlet (101) disposed in a fuel tank (110), The skeleton member includes a first skeleton part (11) extending along a first direction, and a second skeleton protruding from one end of the first skeleton part along a second direction different from the first direction. Part (12), the first skeleton part has a first flexible part (21) that can be elastically deformed at an intermediate part in the longitudinal direction thereof, and the second skeleton part is formed by the connecting pipe. A second flexible portion (31) that is coupled and elastically deformable at a portion between the connecting pipe and the first skeleton portion is provided. The frame member encased by said filter cloth is characterized in that it is bent in the said first flexible portion with the filter cloth.

この構成によれば、第１骨格部から突出した第２骨格部を設け、第２骨格部に第２可撓部を設けたため、第１可撓部において第１骨格部を折り曲げても第２可撓部における屈曲が容易である。そのため、フィルタ装置を燃料タンクに挿入する際に濾布が燃料タンクの開口周縁やタンク内壁に当接しても第２可撓部において変形し、濾布及び骨格部材が破損することなく、フィルタ装置を配置することができる。   According to this configuration, since the second skeleton portion protruding from the first skeleton portion is provided and the second flexible portion is provided in the second skeleton portion, the second skeleton portion is bent even if the first skeleton portion is bent at the first flexible portion. Bending at the flexible part is easy. Therefore, when the filter device is inserted into the fuel tank, even if the filter cloth contacts the peripheral edge of the opening of the fuel tank or the inner wall of the tank, the filter device is deformed in the second flexible portion, and the filter cloth and the skeleton member are not damaged. Can be arranged.

上記発明において、前記第１の方向と前記第２の方向とは、互いに直交する方向であり、前記第１可撓部は、前記第２の方向に沿った軸線を中心として屈曲可能であり、前記第２可撓部は、前記第１の方向に沿った軸線を中心として屈曲可能であり、前記濾布によって包み込まれた前記骨格部材は、前記第１可撓部において折り曲げられることによって、前記第１骨格部の長手方向における両端部が互いに対向した位置に配置されることが好ましい。   In the above invention, the first direction and the second direction are directions orthogonal to each other, and the first flexible portion can be bent around an axis along the second direction, The second flexible portion is bendable about an axis along the first direction, and the skeletal member wrapped by the filter cloth is bent at the first flexible portion, thereby It is preferable that both end portions in the longitudinal direction of the first skeleton portion are disposed at positions facing each other.

この構成によれば、第２可撓部のおいて屈曲しても第２骨格部が第１骨格部と干渉し難くなり、第２可撓部における屈曲が妨げられない。   According to this structure, even if it bends in the 2nd flexible part, it becomes difficult for a 2nd skeleton part to interfere with a 1st skeleton part, and the bending in a 2nd flexible part is not prevented.

上記発明において、前記接続管は、前記第２可撓部が弾性変形し、前記第１骨格部が前記濾布を介して前記燃料タンクの内壁（１１１）を押圧するように、前記燃料吸入口に接続されることが好ましい。   In the above invention, the connecting pipe has the fuel inlet port so that the second flexible portion is elastically deformed and the first skeleton portion presses the inner wall (111) of the fuel tank through the filter cloth. It is preferable to be connected to.

この構成によれば、燃料タンクが振動及び変形してもフィルタ装置との接触が維持され、フィルタ装置と燃料タンク内壁との衝突音が抑制される。   According to this configuration, even if the fuel tank vibrates and deforms, contact with the filter device is maintained, and a collision sound between the filter device and the fuel tank inner wall is suppressed.

上記発明において、前記濾布は、前記第１骨格部が前記第１可撓部において折り曲げられた際に、前記接続管と干渉しないように、外縁が切り欠かれていることが好ましい。   In the above invention, it is preferable that an outer edge of the filter cloth is notched so that the filter cloth does not interfere with the connection pipe when the first skeleton portion is bent at the first flexible portion.

この構成によれば、フィルタ装置のコンパクト化が図れる。   According to this configuration, the filter device can be made compact.

上記発明において、前記第１可撓部は、前記第１骨格部の厚み方向に突出した複数のヘアピン形状部（２２）を含むことが好ましい。   In the above invention, the first flexible part preferably includes a plurality of hairpin-shaped parts (22) protruding in the thickness direction of the first skeleton part.

この構成によれば、第１可撓部における屈曲が容易になる。   According to this configuration, the first flexible portion can be easily bent.

以上の構成によれば、積層形態をとるフィルタ装置において、燃料タンク内壁との接触が容易に維持されるようになる。   According to the above configuration, in the filter device taking the laminated form, the contact with the inner wall of the fuel tank is easily maintained.

サクションフィルタの斜視図Perspective view of suction filter サクションフィルタの平面図Top view of suction filter 骨格部材の斜視図Perspective view of skeletal member 骨格部材及び濾布の位置関係を示す断面図Sectional drawing which shows the positional relationship of a skeleton member and a filter cloth 拘束部材の斜視図Perspective view of restraint member 拘束部材の側面図Side view of restraint member 図２のVII−VII断面図VII-VII sectional view of FIG. サクションフィルタの使用状態を示す断面図Sectional view showing the usage state of the suction filter

以下、図面を参照して、本発明の実施形態を、自動車や二輪車等の燃料タンクに使用されるサクションフィルタに適用した例について説明する。   Hereinafter, an example in which an embodiment of the present invention is applied to a suction filter used in a fuel tank of an automobile, a motorcycle, or the like will be described with reference to the drawings.

図１及び図２に示すように、サクションフィルタ１は、骨格部材２と、骨格部材２を包み込んで袋状に形成された濾布３と、濾布３を貫通し、濾布の内部と外部とを連通する接続管４と、骨格部材２を含む濾布３を折り畳んだ状態に維持する拘束部材５とを有している。骨格部材２、接続管４及び拘束部材５は、樹脂の成形品であってよい。   As shown in FIGS. 1 and 2, the suction filter 1 includes a skeleton member 2, a filter cloth 3 that wraps around the skeleton member 2 and is formed in a bag shape, penetrates the filter cloth 3, and the inside and outside of the filter cloth. And a restraining member 5 that maintains the filter cloth 3 including the skeleton member 2 in a folded state. The skeleton member 2, the connecting pipe 4, and the restraining member 5 may be resin molded products.

図３及び図４に示すように、骨格部材２は、横方向（第１の方向）に延在する外形が略長方形状の第１骨格部１１と、第１骨格部１１の長手方向における一端から、横方向と直交する縦方向（第２の方向）に突出した第２骨格部１２と、第１骨格部１１の長手方向における他端から、縦方向に沿って第２骨格部１２と同方向に突出した第３骨格部１３とを有している。第１骨格部１１、第２骨格部１２及び第３骨格部１３のそれぞれは、横方向及び縦方向に延在する１つの仮想平面に沿うように延在している。第１骨格部１１、第２骨格部１２及び第３骨格部１３は、それぞれ横方向に延在する複数の横桟１５及び縦方向に延在する複数の縦桟１６を有して格子状に形成されている。換言すると、第１骨格部１１、第２骨格部１２及び第３骨格部１３は、複数の肉抜き部１７を有しているといえる。横桟１５及び縦桟１６厚み方向における一方側には、第１骨格部１１、第２骨格部１２及び第３骨格部１３の厚み方向に突出する複数の突起１８が互いに所定の間隔をおいて設けられている。   As shown in FIGS. 3 and 4, the skeleton member 2 includes a first skeleton portion 11 having a substantially rectangular outer shape extending in the lateral direction (first direction) and one end in the longitudinal direction of the first skeleton portion 11. From the other end in the longitudinal direction of the first skeleton part 11 and the second skeleton part 12 projecting in the longitudinal direction (second direction) orthogonal to the lateral direction, the same as the second skeleton part 12 along the longitudinal direction. And a third skeleton 13 projecting in the direction. Each of the first skeleton part 11, the second skeleton part 12, and the third skeleton part 13 extends along one imaginary plane extending in the horizontal direction and the vertical direction. Each of the first skeleton part 11, the second skeleton part 12 and the third skeleton part 13 has a plurality of horizontal crosspieces 15 extending in the horizontal direction and a plurality of vertical crosspieces 16 extending in the vertical direction. Is formed. In other words, it can be said that the first skeleton part 11, the second skeleton part 12, and the third skeleton part 13 have a plurality of lightening parts 17. A plurality of projections 18 projecting in the thickness direction of the first skeleton part 11, the second skeleton part 12, and the third skeleton part 13 are spaced apart from each other at a predetermined interval on one side in the thickness direction of the horizontal rail 15 and the vertical rail 16. Is provided.

第１骨格部１１は、長手方向（横方向）における中央部に、弾性変形によって屈曲可能な第１可撓部２１を有している。第１可撓部２１は、横桟１５に組み込まれた複数のヘアピン形状部２２によって構成されている。複数のヘアピン形状部２２は、第１骨格部１１の厚み方向における一方側に湾曲しつつ膨らみ出た形状を呈し、縦方向に延びる軸線回りに屈曲し易くなっている。本実施形態では、ヘアピン形状部２２は、各横桟１５上に複数（５つ）形成され、それぞれの横桟１５に上に形成されたヘアピン形状部２２は、縦方向において互いに整合する位置に配置されている。第１可撓部２１は、複数のヘアピン形状部２２を有することによって、縦方向（第２の方向）に延びる軸線回りに屈曲し易くなっている。   The first skeleton part 11 has a first flexible part 21 that can be bent by elastic deformation at the center in the longitudinal direction (lateral direction). The first flexible portion 21 is configured by a plurality of hairpin-shaped portions 22 incorporated in the horizontal rail 15. The plurality of hairpin-shaped portions 22 have a shape that bulges while curving to one side in the thickness direction of the first skeleton portion 11 and is easily bent around an axis extending in the vertical direction. In the present embodiment, a plurality (five) of hairpin-shaped portions 22 are formed on each horizontal rail 15, and the hairpin-shaped portions 22 formed on each horizontal rail 15 are aligned with each other in the vertical direction. Has been placed. The first flexible portion 21 has a plurality of hairpin-shaped portions 22, so that the first flexible portion 21 is easily bent around an axis extending in the vertical direction (second direction).

第２骨格部１２の先端付近には、厚み方向において突起１８及びヘアピン形状部２２が突出する方向と相反する方向に突出するように、円管状の接続管基部２３の一端が結合されている。第２骨格部１２の接続管基部２３が設けられた部分には、接続管基部２３と連通する貫通孔２４が形成されており、接続管基部２３は両端が開口している。第２骨格部１２の接続管基部２３が突設された側と相反する側の貫通孔２４の周囲には、周方向に間隔をおいて複数の突片２５が突設されている。   Near the tip of the second skeleton part 12, one end of a tubular connecting pipe base part 23 is coupled so as to protrude in a direction opposite to the direction in which the protrusion 18 and the hairpin-shaped part 22 protrude in the thickness direction. A through hole 24 communicating with the connection pipe base 23 is formed in a portion of the second skeleton part 12 where the connection pipe base 23 is provided, and both ends of the connection pipe base 23 are open. Around the through hole 24 on the side opposite to the side on which the connecting pipe base 23 of the second skeleton part 12 protrudes, a plurality of protruding pieces 25 protrudes at intervals in the circumferential direction.

第２骨格部１２は、第１骨格部１１に接続した基端部と、接続管基部２３が突設された部分との間に、弾性変形によって屈曲可能な第２可撓部３１を有している。第２可撓部３１は、縦桟１６に組み込まれた複数のヘアピン形状部３２によって構成されている。複数のヘアピン形状部３２は、第２骨格部１２の厚み方向における一方側に湾曲しつつ膨らみ出た形状を呈し、横方向に延びる軸線回りに縦桟１６を屈曲し易くしている。本実施形態では、ヘアピン形状部２２は、各縦桟１６上に１つずつ形成され、各ヘアピン形状部３２は、縦方向において互いに整合する位置に配置されている。第２可撓部３１は、複数のヘアピン形状部３２を有することによって、横方向（第１の方向）に延びる軸線回りに屈曲し易くなっている。   The second skeleton portion 12 includes a second flexible portion 31 that can be bent by elastic deformation between a base end portion connected to the first skeleton portion 11 and a portion where the connection pipe base portion 23 is protruded. ing. The second flexible part 31 is configured by a plurality of hairpin shaped parts 32 incorporated in the vertical rail 16. The plurality of hairpin-shaped portions 32 have a shape that bulges while curving to one side in the thickness direction of the second skeleton portion 12, and makes it easy to bend the vertical rail 16 around the axis extending in the lateral direction. In the present embodiment, one hairpin shape portion 22 is formed on each vertical rail 16, and each hairpin shape portion 32 is arranged at a position aligned with each other in the vertical direction. Since the second flexible portion 31 includes the plurality of hairpin-shaped portions 32, the second flexible portion 31 is easily bent around the axis extending in the lateral direction (first direction).

第３骨格部１３は、突出端における横方向における外端側（第２骨格部１２側と相反する側）が切り欠かれた三角形状を呈している。また、第３骨格部１３は、縦方向における突出長さが第２骨格部１２よりも短くなっており、第３骨格部１３の突出端は、縦方向において概ね第２骨格部１２の第２可撓部３１と対応する位置に配置されている。   The third skeleton part 13 has a triangular shape in which the outer end side in the lateral direction at the protruding end (the side opposite to the second skeleton part 12 side) is cut out. In addition, the third skeleton portion 13 has a protruding length in the vertical direction shorter than that of the second skeleton portion 12, and the protruding end of the third skeleton portion 13 is substantially the second of the second skeleton portion 12 in the vertical direction. It is arranged at a position corresponding to the flexible part 31.

濾布３は、例えばポリプロピレン繊維やポリエチレン繊維からなるメッシュ布から構成されている。濾布３は、メッシュ布を各種積層したものであってよく、またメッシュ布間に不織布等を介装したものであってもよい。濾布３は、骨格部材２を挟むように２つ折りに折り重ねられ、重ね合わされた周縁部３３が熱接着によって結合され、袋状に形成される。濾布３は、接続管基部２３が通過する貫通孔（図示しない）を有している。図８に示すように、濾布３を貫通した接続管基部２３の先端部には、一端にフランジ３４を有する円管状の接続管先端部３５が嵌め付けられ、濾布３の貫通孔の周縁部は第２骨格部１２とフランジ３４との間に挟み込まれる。袋状に形成された濾布３は、骨格部材２の突起１８、突片２５及びヘアピン形状部２２、３２に内側から支持され、濾布３の内面同士が互いに離間して配置される。すなわち、濾布３は、内部空間を有し、膨らんだ形状に維持される。濾布３は、接続管基部２３及び接続管先端部３５からなる接続管４によって、内部空間が外部に連通される。接続管先端部３５の先端部には、燃料ポンプ１００の燃料吸入口１０１と結合するためのコネクタ３６が形成されている。   The filter cloth 3 is composed of a mesh cloth made of, for example, polypropylene fiber or polyethylene fiber. The filter cloth 3 may be one obtained by laminating various mesh cloths, or may be one in which a nonwoven fabric or the like is interposed between the mesh cloths. The filter cloth 3 is folded in half so as to sandwich the skeleton member 2, and the overlapped peripheral edge portion 33 is bonded by thermal bonding to form a bag shape. The filter cloth 3 has a through hole (not shown) through which the connecting pipe base 23 passes. As shown in FIG. 8, a distal end portion of a connecting pipe base portion 23 penetrating the filter cloth 3 is fitted with a circular connecting pipe distal end portion 35 having a flange 34 at one end, and the peripheral edge of the through hole of the filter cloth 3. The part is sandwiched between the second skeleton part 12 and the flange 34. The filter cloth 3 formed in a bag shape is supported from the inside by the protrusions 18, the projecting pieces 25, and the hairpin-shaped portions 22 and 32 of the skeleton member 2, and the inner surfaces of the filter cloth 3 are spaced apart from each other. That is, the filter cloth 3 has an internal space and is maintained in a swollen shape. An inner space of the filter cloth 3 is communicated to the outside by the connecting pipe 4 including the connecting pipe base 23 and the connecting pipe tip 35. A connector 36 for coupling with the fuel inlet 101 of the fuel pump 100 is formed at the tip of the connecting pipe tip 35.

図４に示すように、骨格部材２を包み込んだ濾布３は、平面視において、長方形の１つの角部が三角形状に切り欠かれた形状を呈している。詳細には、濾布３は、第３骨格部１３の突出端の外方側が切り欠かれ、第２骨格部１２の突出端から第３骨格部１３の突出端へと、縦方向に対して略４５°の角度をもって延びる傾斜縁３７を形成している。   As shown in FIG. 4, the filter cloth 3 enclosing the skeleton member 2 has a shape in which one corner of a rectangle is cut out in a triangular shape in plan view. Specifically, the filter cloth 3 is cut out on the outer side of the protruding end of the third skeleton part 13, and from the protruding end of the second skeleton part 12 to the protruding end of the third skeleton part 13 in the longitudinal direction. An inclined edge 37 extending at an angle of approximately 45 ° is formed.

骨格部材２を含む濾布３は、第１可撓部２１において縦方向に沿った軸線を中心として接続管４が突出する側へと折り曲げられ、積層される（重ね合わされる）。このとき、濾布３は傾斜縁３７を形成するように切り欠かれているため、濾布３と接続管４（接続管先端部３５）との干渉が避けられる。骨格部材２を含む濾布３は、拘束部材５によって折り曲げられた状態に維持される。   The filter cloth 3 including the skeleton member 2 is folded and laminated (superposed) on the first flexible portion 21 toward the side where the connecting pipe 4 protrudes about the axis line along the longitudinal direction. At this time, since the filter cloth 3 is cut out so as to form the inclined edge 37, interference between the filter cloth 3 and the connection pipe 4 (connection pipe tip 35) can be avoided. The filter cloth 3 including the skeleton member 2 is maintained in a state of being bent by the restraining member 5.

図５及び図６に示すように、拘束部材５は、折り畳まれた濾布３を外囲する環状のバンド４１と、バンド４１の内周側に突設され、折り畳まれた濾布間に突入するスペーサ４２と、バンド４１に突設され、濾布３の側縁に引っ掛かる第１係止爪（係止片）４３及び第２係止爪（係止片）４４とを有している。   As shown in FIGS. 5 and 6, the restraining member 5 protrudes from the annular band 41 surrounding the folded filter cloth 3 and the inner peripheral side of the band 41, and enters between the folded filter cloths. And a first locking claw (locking piece) 43 and a second locking claw (locking piece) 44 that protrude from the band 41 and are hooked on the side edge of the filter cloth 3.

バンド４１は、それぞれ縦方向に延在し、互いに離間して配置された一対の側縁部５１と、上方に凸となるように湾曲しつつ横方向に延在し、一対の側縁部５１間を連結する上周部５２と、下方に凸となるように湾曲しつつ横方向に延在し、一対の側縁部５１間を連結する下周部５３とを有している。一対の側縁部５１、上周部５２及び下周部５３は、それぞれ扁平な板片に形成されている。バンド４１は、縦方向に沿った方向から見て、一対の側縁部５１、上周部５２及び下周部５３によって環状を呈している。本実施形態では、上周部５２及び下周部５３は、それぞれ２つずつ設けられ、それぞれ縦方向に偏倚して配置されている。   Each of the bands 41 extends in the vertical direction and is spaced apart from each other, and a pair of side edges 51 that extend in the horizontal direction while curving so as to protrude upward, and the pair of side edges 51. The upper peripheral part 52 which connects between them, and the lower peripheral part 53 which extends in a horizontal direction, curving so that it may become convex downward, and connects between a pair of side edge parts 51 are included. A pair of side edge part 51, the upper peripheral part 52, and the lower peripheral part 53 are each formed in the flat board piece. The band 41 has an annular shape with a pair of side edge portions 51, an upper peripheral portion 52, and a lower peripheral portion 53 as viewed from the direction along the vertical direction. In this embodiment, two each of the upper peripheral part 52 and the lower peripheral part 53 are provided, and are respectively arranged offset in the vertical direction.

スペーサ４２は、一方の側縁部５１の内面に突設され、横方向に他方の側縁部５１の内面側へと延出する上片部５６及び下片部５７と、上片部５６及び下片部５７の突出端同士を連結する端部５８とを有している。上片部５６と下片部５７とは、縦方向かつ上下方向に互いに偏倚して配置されている。上片部５６及び下片部５７の長手方向における適所は、縦方向かつ上下方向に延在する補強壁５９によって連結されている。   The spacer 42 protrudes from the inner surface of one side edge portion 51 and extends in the lateral direction to the inner surface side of the other side edge portion 51. The upper piece portion 56 and the lower piece portion 57, It has an end 58 that connects the protruding ends of the lower piece 57. The upper piece portion 56 and the lower piece portion 57 are arranged so as to be deviated from each other in the vertical direction and the vertical direction. Appropriate portions in the longitudinal direction of the upper piece 56 and the lower piece 57 are connected by a reinforcing wall 59 extending in the vertical direction and the vertical direction.

上周部５２及び下周部５３の外周面及び内周面には、凸部６１、６２が形成されている。本実施形態では、凸部６１、６２は、上周部５２及び下周部５３を波形に形成することによって形成されている。同様に、上片部５６の上面及び下片部５７の下面には、凸部６３、６４が形成されている。本実施形態では、凸部６３、６４は、上片部５６及び下片部５７を波形に形成することによって形成されている。   Convex portions 61 and 62 are formed on the outer peripheral surface and inner peripheral surface of the upper peripheral portion 52 and the lower peripheral portion 53. In this embodiment, the convex parts 61 and 62 are formed by forming the upper peripheral part 52 and the lower peripheral part 53 in a waveform. Similarly, convex portions 63 and 64 are formed on the upper surface of the upper piece portion 56 and the lower surface of the lower piece portion 57. In this embodiment, the convex parts 63 and 64 are formed by forming the upper piece part 56 and the lower piece part 57 into a waveform.

第１係止爪４３は、バンド４１の内で縦方向において最も端側に配置された上周部５２から縦方向に突設されている。第１係止爪４３は、縦方向に延びた後、略直角に内方に屈曲し、その後縦方向に再び屈曲して上周部５２側に延びている。すなわち、第１係止爪４３は、フック形に形成されている。第２係止爪４４は、バンド４１の内で縦方向において最も端側に配置された下周部５３から縦方向に一対突設されている。各第２係止爪４４は、下周部５３から縦方向において第１係止爪４３と相反する側に延びた基部６６と、基部６６の先端から略４５°内方に傾斜して延在する傾斜部６７と、傾斜部６７の先端から更に略４５°内方に傾斜して上下方向に延在する先端部６８とを有している。各第２係止爪４４の外面には、基部６６から傾斜部６７にかけて延在する凹部６９が形成されている。   The first locking claw 43 protrudes in the vertical direction from the upper peripheral portion 52 disposed on the most end side in the vertical direction in the band 41. The first locking claw 43 extends in the vertical direction, then bends inward at a substantially right angle, and then bends again in the vertical direction to extend toward the upper peripheral portion 52 side. That is, the 1st latching claw 43 is formed in the hook shape. A pair of second locking claws 44 are provided to protrude in the vertical direction from the lower peripheral portion 53 disposed on the most end side in the vertical direction in the band 41. Each of the second locking claws 44 extends from the lower peripheral portion 53 to the side opposite to the first locking claw 43 in the vertical direction, and to incline approximately 45 ° inward from the tip of the base portion 66. And a tip portion 68 that is further inclined inward by approximately 45 ° from the tip of the tilt portion 67 and extends in the vertical direction. A recess 69 extending from the base 66 to the inclined portion 67 is formed on the outer surface of each second locking claw 44.

図１、図２、図７及び図８に示すように、骨格部材２を含む濾布３は、第１可撓部２１において折り曲げられた状態で、拘束部材５のバンド４１が形成する環形状の内部に挿入される。これにより、バンド４１は、第１可撓部２１の復元力に抗して骨格部材２を含む濾布３を折り曲げられた状態に維持する。このとき、スペーサ４２は、折り曲げられることによって互いに対向した濾布３間に配置され、濾布３の表面同士の接触を防止している。また、上周部５２、下周部５３、上片部５６及び下片部５７は、それぞれ凸部６１〜６４において濾布３に接触するため、濾布３との接触面積が最小限に低減される。以上のように、スペーサ４２によって濾布３の表面同士の接触を避けると共に、凸部６１〜６４において濾布３に接触するようにしたため、濾布３の濾過に寄与する面積（有効濾過面積）を最大化することができる。   As shown in FIGS. 1, 2, 7, and 8, the filter cloth 3 including the skeleton member 2 is an annular shape formed by the band 41 of the restraining member 5 in a state where the filter cloth 3 is bent at the first flexible portion 21. Is inserted inside. As a result, the band 41 maintains the folded state of the filter cloth 3 including the skeleton member 2 against the restoring force of the first flexible portion 21. At this time, the spacer 42 is disposed between the filter cloths 3 facing each other by being bent, thereby preventing contact between the surfaces of the filter cloths 3. Moreover, since the upper peripheral part 52, the lower peripheral part 53, the upper piece part 56, and the lower piece part 57 contact the filter cloth 3 in the convex parts 61-64, respectively, the contact area with the filter cloth 3 reduces to the minimum. Is done. As described above, the spacer 42 avoids contact between the surfaces of the filter cloth 3 and is in contact with the filter cloth 3 at the convex portions 61 to 64, so that the area contributing to the filtration of the filter cloth 3 (effective filtration area). Can be maximized.

拘束部材５は、第１係止爪４３が濾布３の傾斜縁３７に係止されると共に、一対の第２係止爪４４が先端部６８において濾布３の縦方向における一側の周縁部３３に係止され、濾布３に対して縦方向に変位不能に配置される。   In the restraining member 5, the first locking claw 43 is locked to the inclined edge 37 of the filter cloth 3, and the pair of second locking claw 44 has a peripheral edge on one side in the longitudinal direction of the filter cloth 3 at the distal end portion 68. It is latched by the part 33 and is arranged so as not to be displaced in the longitudinal direction relative to the filter cloth 3.

以上のように構成されたサクションフィルタ１は、図８に示すように、燃料タンク１１０内において、接続管４が燃料ポンプ１００の燃料吸入口１０１に接続された状態において、拘束部材５の下周部５３又は第２係止爪４４の外面が燃料タンク１１０の底面１１１に当接するように配置される。このとき、骨格部材２は、第２可撓部３１において横方向に延在する軸線を中心として角度θを有するように屈曲され、第２可撓部３１の復元力によって拘束部材５の下周部５３又は第２係止爪４４は底面１１１に圧接されている。すなわち、サクションフィルタ１は、予荷重が加えられ、拘束部材５において底面１１１に密着している。これにより、車両の走行時の振動や風圧によって燃料タンク１１０が変形する場合にも、第２可撓部３１が復元力によって変形し、サクションフィルタ１は底面１１１に追従して密着した状態を維持することができる。これにより、サクションフィルタ１の接触、離間の繰り返しによる衝突音（打音）が防止される。   As shown in FIG. 8, the suction filter 1 configured as described above has a lower periphery of the restraining member 5 in the fuel tank 110 in a state where the connection pipe 4 is connected to the fuel intake port 101 of the fuel pump 100. The outer surface of the portion 53 or the second locking claw 44 is disposed so as to contact the bottom surface 111 of the fuel tank 110. At this time, the skeleton member 2 is bent so as to have an angle θ around the axis extending in the lateral direction in the second flexible portion 31, and the lower circumference of the restraining member 5 is restored by the restoring force of the second flexible portion 31. The portion 53 or the second locking claw 44 is in pressure contact with the bottom surface 111. That is, the suction filter 1 is preloaded and is in close contact with the bottom surface 111 of the restraining member 5. As a result, even when the fuel tank 110 is deformed due to vibration or wind pressure during traveling of the vehicle, the second flexible portion 31 is deformed by the restoring force, and the suction filter 1 is kept in close contact with the bottom surface 111. can do. Thereby, a collision sound (sounding sound) due to repeated contact and separation of the suction filter 1 is prevented.

本実施形態では、サクションフィルタ１は、濾布３ではなく、拘束部材５において底面１１１と接触するため、濾布３の底面１１１との接触による摩耗がなくなり、濾布３の破れが防止される。また、拘束部材５の下周部５３及び第２係止爪４４は、凸部６２及び凹部６９において底面１１１と接触（摺接）するため、下周部５３及び第２係止爪４４と底面１１１との接触面積が減少し、下周部５３及び第２係止爪４４と底面１１１との擦れ合いが滑らかになる。   In this embodiment, the suction filter 1 is not in the filter cloth 3 but in contact with the bottom surface 111 in the restraining member 5, so that wear due to contact with the bottom surface 111 of the filter cloth 3 is eliminated, and the filter cloth 3 is prevented from being torn. . Further, since the lower peripheral portion 53 and the second locking claw 44 of the restraining member 5 are in contact (sliding contact) with the bottom surface 111 at the convex portion 62 and the concave portion 69, the lower peripheral portion 53 and the second locking claw 44 are in contact with the bottom surface. The contact area with 111 decreases, and the friction between the lower peripheral portion 53 and the second locking claw 44 and the bottom surface 111 becomes smooth.

本実施形態に係るサクションフィルタ１は、第１可撓部２１において縦方向に沿った軸線を中心として骨格部材２及び濾布３を折り畳むことによって濾布３の濾過に寄与する表面積を広く維持しつつ、サクションフィルタ１全体の体積を小さくすることができ、燃料タンク１１０内の小さなスペースへの配置が可能になる。また、接続管４が配置された第２骨格部１２を骨格部材２及び濾布３を折り畳んだ際に互いに対向する部分（重なり合う部分）から突出させ、第２骨格部１２に第２可撓部３１を形成したため、第２可撓部３１は第１骨格部１１の形態に関わらず変形が可能となる。これにより、第２可撓部３１は、第１可撓部２１において折り畳まれた骨格部材２に十分な可撓性を付与し、サクションフィルタ１と燃料タンク１１０の底面１１１とは密着した状態に確実に維持させる。   The suction filter 1 according to the present embodiment maintains a wide surface area that contributes to the filtration of the filter cloth 3 by folding the skeleton member 2 and the filter cloth 3 around the axis along the longitudinal direction in the first flexible portion 21. However, the volume of the suction filter 1 as a whole can be reduced, and it can be arranged in a small space in the fuel tank 110. In addition, the second skeleton portion 12 in which the connecting pipe 4 is disposed is protruded from a portion (overlapping portion) facing each other when the skeleton member 2 and the filter cloth 3 are folded, and the second skeleton portion 12 is caused to protrude from the second flexible portion. Since 31 is formed, the second flexible portion 31 can be deformed regardless of the form of the first skeleton portion 11. Thereby, the second flexible portion 31 gives sufficient flexibility to the skeleton member 2 folded at the first flexible portion 21, and the suction filter 1 and the bottom surface 111 of the fuel tank 110 are in close contact with each other. Make sure it is maintained.

以上で具体的実施形態の説明を終えるが、本発明は上記実施形態に限定されることなく幅広く変形実施することができる。例えば、本実施形態における第１可撓部２１及び第２可撓部３１の構成は例示であり、様々な公知の構造を適用することができる。例えば、横桟１５及び縦桟１６の厚みを薄くして可撓性を有するようにしてもよい。   Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, the configurations of the first flexible portion 21 and the second flexible portion 31 in the present embodiment are examples, and various known structures can be applied. For example, the horizontal beam 15 and the vertical beam 16 may be made thin to have flexibility.

１…サクションフィルタ（フィルタ装置）、２…骨格部材、３…濾布、４…接続管、５…拘束部材、１１…第１骨格部、１２…第２骨格部、１３…第３骨格部、２１…第１可撓部、２２…ヘアピン形状部、３１…第２可撓部、３２…ヘアピン形状部、３７…傾斜縁、４１…バンド、４２…スペーサ、４３…第１係止爪（係止片）、４４…第２係止爪（係止片）、５１…側縁部、５２…上周部、５３…下周部、６１〜６４…凸部、６９…凹部、１００…燃料ポンプ、１０１…燃料吸入口、１１０…燃料タンク、１１１…底面   DESCRIPTION OF SYMBOLS 1 ... Suction filter (filter apparatus), 2 ... Skeletal member, 3 ... Filter cloth, 4 ... Connection pipe, 5 ... Restraining member, 11 ... 1st skeleton part, 12 ... 2nd skeleton part, 13 ... 3rd skeleton part, DESCRIPTION OF SYMBOLS 21 ... 1st flexible part, 22 ... Hairpin shape part, 31 ... 2nd flexible part, 32 ... Hairpin shape part, 37 ... Inclined edge, 41 ... Band, 42 ... Spacer, 43 ... 1st latching nail (engagement) Stop piece), 44 ... second locking claw (locking piece), 51 ... side edge, 52 ... upper peripheral portion, 53 ... lower peripheral portion, 61-64 ... convex portion, 69 ... recessed portion, 100 ... fuel pump 101 ... Fuel intake port, 110 ... Fuel tank, 111 ... Bottom

Claims (5)

骨格部材と、前記骨格部材を包み込む袋状に形成された濾布と、前記濾布を貫通し、前記濾布の内部と外部とを連通する接続管とを有し、前記接続管において、燃料タンク内に配置された燃料吸入口に接続されるフィルタ装置であって、
前記骨格部材は、第１の方向に沿って延在した第１骨格部と、前記第１骨格部の一端から前記第１の方向と異なる第２の方向に沿って突出した第２骨格部とを有し、
前記第１骨格部は、その長手方向における中間部に弾性変形可能な第１可撓部を有し、
前記第２骨格部は、前記接続管が結合されると共に、前記接続管と前記第１骨格部との間の部分に弾性変形可能な第２可撓部を有し、
前記濾布によって包み込まれた前記骨格部材は、前記濾布と共に前記第１可撓部において折り曲げられることを特徴とするフィルタ装置。 A skeleton member, a filter cloth formed in a bag shape surrounding the skeleton member, and a connecting pipe that penetrates the filter cloth and communicates the inside and the outside of the filter cloth. A filter device connected to a fuel inlet arranged in a tank,
The skeleton member includes: a first skeleton portion extending along a first direction; a second skeleton portion protruding from one end of the first skeleton portion along a second direction different from the first direction; Have
The first skeleton portion has a first flexible portion that can be elastically deformed at an intermediate portion in the longitudinal direction thereof,
The second skeleton portion has a second flexible portion to which the connecting pipe is coupled and elastically deformable at a portion between the connecting pipe and the first skeleton portion,
The filter device, wherein the skeleton member wrapped with the filter cloth is bent together with the filter cloth at the first flexible portion. 前記第１の方向と前記第２の方向とは、互いに直交する方向であり、
前記第１可撓部は、前記第２の方向に沿った軸線を中心として屈曲可能であり、
前記第２可撓部は、前記第１の方向に沿った軸線を中心として屈曲可能であり、
前記濾布によって包み込まれた前記骨格部材は、前記第１可撓部において折り曲げられることによって、前記第１骨格部の長手方向における両端部が互いに対向した位置に配置されることを特徴とする請求項１に記載のフィルタ装置。 The first direction and the second direction are directions orthogonal to each other,
The first flexible portion is bendable about an axis along the second direction;
The second flexible portion is bendable about an axis along the first direction;
The skeletal member wrapped by the filter cloth is bent at the first flexible portion, so that both end portions in the longitudinal direction of the first skeleton portion are arranged at positions facing each other. Item 2. The filter device according to Item 1. 前記接続管は、前記第２可撓部が弾性変形し、前記第１骨格部が前記濾布を介して前記燃料タンクの内壁を押圧するように、前記燃料吸入口に接続されることを特徴とする請求項１又は請求項２に記載のフィルタ装置。   The connection pipe is connected to the fuel inlet so that the second flexible portion is elastically deformed and the first skeleton portion presses the inner wall of the fuel tank via the filter cloth. The filter device according to claim 1 or 2. 前記濾布は、前記第１骨格部が前記第１可撓部において折り曲げられた際に、前記接続管と干渉しないように、外縁が切り欠かれていることを特徴とする請求項１〜請求項３のいずれか１つの項に記載のフィルタ装置。   The outer edge of the filter cloth is cut out so as not to interfere with the connecting pipe when the first skeleton portion is bent at the first flexible portion. Item 4. The filter device according to any one of items 3. 前記第１可撓部は、前記第１骨格部の厚み方向に突出した複数のヘアピン形状部を含むことを特徴とする請求項１〜請求項４のいずれか１つの項に記載のフィルタ装置。   The filter device according to any one of claims 1 to 4, wherein the first flexible portion includes a plurality of hairpin-shaped portions protruding in a thickness direction of the first skeleton portion.
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