WO2023042800A1 - Fuel distribution pipe - Google Patents

Fuel distribution pipe Download PDF

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Publication number
WO2023042800A1
WO2023042800A1 PCT/JP2022/034074 JP2022034074W WO2023042800A1 WO 2023042800 A1 WO2023042800 A1 WO 2023042800A1 JP 2022034074 W JP2022034074 W JP 2022034074W WO 2023042800 A1 WO2023042800 A1 WO 2023042800A1
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WO
WIPO (PCT)
Prior art keywords
case
case portion
distribution pipe
metal
fuel distribution
Prior art date
Application number
PCT/JP2022/034074
Other languages
French (fr)
Japanese (ja)
Inventor
伸司 山▲崎▼
透 小谷野
Original Assignee
三桜工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三桜工業株式会社 filed Critical 三桜工業株式会社
Publication of WO2023042800A1 publication Critical patent/WO2023042800A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors

Definitions

  • One aspect of the present invention relates to a fuel distribution pipe that distributes and supplies fuel to a plurality of injectors.
  • Fuel distribution pipes that distribute and supply fuel to a plurality of injectors include, for example, metal fuel distribution pipes as described in Patent Document 1 and resin fuel distribution pipes as described in Patent Document 2. Are known.
  • metal fuel distribution pipes are manufactured by brazing multiple pieces together. Brazing generates a large amount of carbon dioxide to melt the brazing metal.
  • metal fuel distribution pipes are more expensive to manufacture than resin fuel distribution pipes. Iron (carbon steel) fuel distribution pipes can be manufactured at lower cost than stainless steel or aluminum fuel distribution pipes. Limited bases.
  • resin fuel distribution pipes do not require melting of metal brazing material, so it is possible to suppress the generation of a large amount of carbon dioxide during manufacturing.
  • resin fuel distribution pipes are lighter in weight than metal fuel distribution pipes, and the manufacturing cost can be reduced.
  • resin-made fuel distribution pipes need to be thick in order to ensure rigidity, and therefore cannot obtain the effect of suppressing fuel pulsation that metal fuel distribution pipes have.
  • one aspect of the present invention aims to provide a fuel distribution pipe capable of suppressing the generation of carbon dioxide during manufacturing and suppressing fuel pulsation.
  • a fuel distribution pipe is a fuel distribution pipe that distributes and supplies fuel to a plurality of injectors, and includes a metal portion that forms a storage space for storing fuel, and a metal portion that partially covers the metal portion. and a resin portion bonded to the metal portion.
  • this fuel distribution pipe has a resin part joined to a metal part, it is possible to suppress the generation of carbon dioxide during manufacturing compared to a metal fuel distribution pipe in which all members are brazed. Moreover, since the resin part is joined to the metal part so as to partially cover the metal part, the resin part and the metal part can be firmly joined by injection molding or the like. Since the metal portion forms a storage space for storing the fuel, the metal portion deforms so as to follow the pulsation of the fuel, thereby suppressing the pulsation of the fuel. As a result, it is possible to suppress the generation of carbon dioxide during manufacturing and suppress the pulsation of the fuel.
  • the metal portion has a first case portion and a second case portion, and the resin portion connects the first case portion and the second case portion to form a space between the first case portion and the second case portion. and the sealing portion may be joined to the first case portion and the second case portion so as to cover the connection portion between the first case portion and the second case portion.
  • the metal portion has a first case portion and a second case portion, and the first case portion and the second case portion are connected and sealed by a seal portion, which is a resin portion. Therefore, the airtightness of the storage space can be ensured, and the fuel distribution pipe can be easily manufactured.
  • the sealing portion is joined to the first case portion and the second case portion so as to cover the connection portion between the first case portion and the second case portion, the first case portion and the second case portion and the resin It is possible to firmly join the parts.
  • At least a portion of the second case portion overlaps at least a portion of the first case portion, and the seal portion covers the overlapped portion of the first case portion and the second case portion. and the second case portion.
  • this fuel distribution pipe at least a portion of the first case portion and at least a portion of the second case portion are overlapped, and the seal portion covers the overlapping portion of the first case portion and the second case portion. It is joined to the first case part and the second case part as follows. Therefore, it is possible to easily connect the first case portion and the second case portion.
  • At least a portion of the first case portion may extend away from the second case portion in the overlapping portion.
  • at least part of the first case portion extends in a direction away from the second case portion at the overlapping portion. Therefore, the first case portion is caught by the seal portion, thereby suppressing the first case portion from coming off the seal portion in the direction orthogonal to the overlapping direction of the first case portion and the second case portion. can.
  • At least a portion of the first case portion may be bent in a direction away from the second case portion in the overlapping portion.
  • at least a portion of the first case portion is bent in a direction away from the second case portion at the overlapping portion. Therefore, the first case portion is caught by the seal portion, thereby suppressing the first case portion from coming off the seal portion in the direction orthogonal to the overlapping direction of the first case portion and the second case portion. can.
  • a gap may be formed between the first case part and the second case part in the overlapping portion, and the seal part may be filled in the gap.
  • a gap formed between the first case portion and the second case portion at the overlapping portion is filled with the sealing portion.
  • the contact area between the first and second cases and the seal portion is increased, so that the first and second case portions and the seal portion can be joined more firmly.
  • the first case part has a first flange part extending on the side opposite to the storage space
  • the second case part has a second flange part extending on the side opposite to the storage space and superimposed on the first flange part.
  • the sealing portion may be joined to the first case portion and the second case portion so as to cover at least a portion of the first flange portion and at least a portion of the second flange portion.
  • the first flange portion of the first case portion extending on the side opposite to the storage space and the second flange portion of the second case portion extending on the side opposite to the storage space are overlapped with each other, and the seal portion are joined to the first case portion and the second case portion so as to cover at least a portion of the first flange portion and at least a portion of the second flange portion. That is, the seal portion is joined to the first case portion and the second case portion so as to sandwich the first flange portion and the second flange portion. Therefore, the first case portion and the second case portion can be connected more firmly by the seal portion in the overlapping direction of the first flange portion and the second flange portion.
  • the first flange portion and the second flange portion may have holes penetrating through the first flange portion and the second flange portion, and the holes may be filled with the seal portion.
  • a seal portion is filled in a hole passing through the first flange portion and the second flange portion. That is, the seal portion sandwiches the first flange portion and the second flange portion, and the first flange portion and the second flange portion extend in a direction perpendicular to the overlapping direction of the first flange portion and the second flange portion. It is joined to the first case portion and the second case portion so as to inhibit relative movement. Therefore, the seal portion can connect the first case portion and the second case portion more firmly.
  • the metal part may have an opening communicating with the storage space, and the resin part may have an opening connecting part joined to the metal part so as to cover a part of the metal part adjacent to the opening.
  • the opening connecting portion which is a resin portion, is joined to the metal portion so as to cover a portion of the metal portion adjacent to the opening. Therefore, the metal portion and the opening connection portion can be firmly joined.
  • the opening connecting part may be joined to the metal part so as to cover part of the outer surface of the metal part adjacent to the opening and part of the inner surface of the metal part adjacent to the opening.
  • the opening connecting portion is joined to the metal portion so as to cover a portion of the outer surface of the metal portion adjacent to the opening and a portion of the inner surface of the metal portion adjacent to the opening. That is, the opening connecting portion is joined to the metal portion so as to sandwich the metal portion. Therefore, the metal portion and the opening connection portion can be firmly joined.
  • the metal part has a case body that forms the storage space and a cylindrical part that bends with respect to the case body to form an opening, and the opening connecting part covers a part of the case body and the cylindrical part. It may be joined to the metal part.
  • the metal portion has a cylindrical portion that bends with respect to the case body, and the opening connecting portion is joined to the metal portion so as to cover a portion of the case body and the cylindrical portion. Therefore, it is possible to prevent the opening connecting portion from coming off the metal portion. Moreover, since the contact area between the metal portion and the opening connection portion is increased, the metal portion and the opening connection portion can be joined more firmly.
  • the opening connection part is pressed against the metal part due to shrinkage after molding of the opening connection part, and is closely attached to the metal part.
  • the cylindrical portion is bent with respect to the case main body, it is possible to increase the total thickness obtained by adding up the thickness of the opening connection portion in the contraction direction toward the metal portion of the opening connection portion. That is, it is possible to increase the amount of contraction of the opening connecting portion toward the metal portion. Therefore, it is possible to improve the adhesion of the opening connecting portion to the metal portion.
  • the opening connection part may have an inlet formed with a flow path communicating with the opening for supplying fuel to the storage space.
  • the inlet which is a resin part, is joined to the metal part so as to cover part of the metal part adjacent to the opening. Therefore, it is possible to suppress the generation of carbon dioxide when joining the metal portion and the inlet, and to firmly join the metal portion and the inlet.
  • the opening connection part may have an injector cup formed with a flow path communicating with the opening for holding the injector and supplying fuel to the injector.
  • the injector cup which is a resin part, is joined to the metal part so as to cover part of the metal part adjacent to the opening. Therefore, it is possible to suppress the generation of carbon dioxide when joining the metal portion and the injector cup, and to firmly join the metal portion and the injector cup.
  • the resin part may have a bracket for fixing the fuel distribution pipe to the vehicle, and the bracket may be joined to the metal part so as to cover part of the outer surface of the metal part.
  • a bracket which is a resin portion, is joined to the metal portion so as to partially cover the outer surface of the metal portion. Therefore, it is possible to suppress the generation of carbon dioxide when joining the metal part and the bracket, and to firmly join the metal part and the bracket.
  • the resin portion has an integrally formed portion in which an injector cup for holding the injector and a bracket for fixing the fuel distribution pipe to the vehicle are integrally formed, and the integrally formed portion is a part of the metal portion. It may be joined to the metal part so as to cover it.
  • the injector cup and the bracket are integrally formed as an integrally formed portion, and the integrally formed portion is joined to the metal portion so as to partially cover the metal portion. Therefore, compared to the case where the injector cup and the bracket are separated, the joint area between the injector cup and the bracket and the metal part can be increased, and the joint structure between the injector cup and the bracket and the metal part can be complicated. can be Thereby, the joint strength of the injector cup and the bracket to the metal portion can be increased.
  • the metal part may be plated.
  • the metal portion since the metal portion is plated, corrosion resistance can be improved. Therefore, for example, the metal portion can be made of inexpensive iron.
  • FIG. 3 is a cross-sectional view taken along line IV-IV shown in FIG. 2;
  • FIG. FIG. 2 is a cross-sectional view taken along line VV shown in FIG. 1;
  • 2 is a cross-sectional view taken along line VI-VI shown in FIG. 1;
  • FIG. 5 is an enlarged cross-sectional view of the vicinity of the inlet in FIG. 4;
  • FIG. 5 is an enlarged cross-sectional view of the vicinity of the injector cup of FIG. 4;
  • FIG. FIG. 6 is a cross-sectional view corresponding to FIG.
  • FIG. 5 of the fuel distribution pipe of the second embodiment; 6 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the third embodiment;
  • FIG. FIG. 8 is a cross-sectional view corresponding to FIG. 7 of the fuel distribution pipe of the fourth embodiment;
  • FIG. 9 is a cross-sectional view corresponding to FIG. 8 of the fuel distribution pipe of the fourth embodiment; It is a front view which shows the fuel distribution pipe of 5th embodiment.
  • FIG. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 13; It is a front view which shows the fuel distribution pipe of 6th embodiment. It is a bottom view which shows the fuel distribution pipe of 6th embodiment.
  • FIG. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 13; It is a front view which shows the fuel distribution pipe of 6th embodiment. It is a bottom view which shows the fuel distribution pipe of 6th embodiment.
  • FIG. 16 is a cross-sectional view along line XVII-XVII shown in FIG. 15;
  • FIG. 18 is a cross-sectional view corresponding to FIG. 17 of the fuel distribution pipe of the seventh embodiment;
  • FIG. 11 is a plan view showing a fuel distribution pipe of an eighth embodiment;
  • FIG. 20 is a cross-sectional view taken along line XX-XX shown in FIG. 19;
  • FIG. 1 is a front view showing the fuel distribution pipe 1 of the first embodiment.
  • FIG. 2 is a plan view showing the fuel distribution pipe 1 of the first embodiment.
  • FIG. 3 is a bottom view showing the fuel distribution pipe 1 of the first embodiment.
  • FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG.
  • FIG. 5 is a cross-sectional view taken along line VV shown in FIG.
  • FIG. 6 is a cross-sectional view along line VI-VI shown in FIG.
  • a fuel distribution pipe 1 of the first embodiment shown in FIGS. 1 to 6 distributes and supplies fuel supplied from a fuel pipe (not shown) to a plurality of injectors (not shown).
  • the fuel distribution pipe 1 is also called a fuel injection rail, a fuel delivery pipe, or the like.
  • the fuel distribution pipe 1 includes a metal case 2, an inlet 3 which is a resin portion, a plurality of injector cups 4 which are a resin portion, and a plurality of brackets 5 which are a resin portion.
  • the drawing shows the fuel distribution pipe 1 having three injector cups 4, the number of injector cups 4 is not particularly limited as long as it is two or more.
  • the drawing shows the fuel distribution pipe 1 having two brackets 5 , the number of brackets 5 is not particularly limited.
  • the metal case 2 is a part for temporarily storing the fuel supplied from the fuel pipe in order to supply fuel to multiple injectors.
  • the metal case 2 extends linearly, for example, along the cylinder row direction (crankshaft direction) of the engine.
  • a storage space 21 for storing fuel is formed inside the metal case 2 .
  • the metal case 2 has a first case portion 6 that is a metal portion, a second case portion 7 that is a metal portion, and a seal portion 8 that is a resin portion.
  • the first case portion 6 is formed in an elongated bowl shape to form the storage space 21 .
  • the second case portion 7 is formed in an elongated bowl shape to form the storage space 21 .
  • the seal portion 8 connects the first case portion 6 and the second case portion 7 to seal the space between the first case portion 6 and the second case portion 7 . That is, in the metal case 2, the first case portion 6 and the second case portion 7 are connected and sealed by the seal portion 8, and the storage space 21 is formed between the first case portion 6 and the second case portion 7. formed.
  • the peripheral edge portion 61 of the first case portion 6 overlaps the peripheral edge portion 71 of the second case portion 7 .
  • the peripheral edge portion 61 of the first case portion 6 is outside the peripheral edge portion 71 of the second case portion 7 (on the side opposite to the storage space 21). are placed.
  • the seal portion 8 is joined to the first case portion 6 and the second case portion 7 so as to cover the overlapping portion 25 of the first case portion 6 and the second case portion 7 .
  • the overlapped portion 25 is a peripheral edge portion 61 of the first case portion 6 and a peripheral edge portion 71 of the second case portion 7 where the first case portion 6 and the second case portion 7 are overlapped.
  • the first case portion 6 and the second case portion 7 are connected by a seal portion 8 at an overlapping portion 25 between the first case portion 6 and the second case portion 7 . Therefore, the overlapping portion 25 of the first case portion 6 and the second case portion 7 is the first case portion 6 and the second case portion 7 where the first case portion 6 and the second case portion 7 are connected. It is also the connecting part of
  • the first case portion 6 and the second case portion 7 may be in contact with each other over the entire overlapping portion 25, or may be in contact with only a part of the overlapping portion 25.
  • the entire area of the mating portion 25 may be spaced apart.
  • the first case portion 6 and the second case portion 7 are in contact with each other over the entire overlapping portion 25 .
  • the seal portion 8 may be formed only on the outer surface side of the metal case 2 (the side opposite to the storage space 21), or may be formed only on the inner surface side of the metal case 2 (the storage space 21 side). may be formed on both sides.
  • the seal portion 8 is formed only on the outer surface side of the metal case 2 from the viewpoint of ease of manufacture.
  • the thicknesses of the first case portion 6 and the second case portion 7 are not particularly limited. From the viewpoint of enhancing the effect of suppressing fuel pulsation, the thickness of the first case portion 6 and the second case portion 7 is preferably, for example, 3.0 mm or less, more preferably 2.0 mm or less. It is more preferably 0.6 mm or less. That is, when the thickness of the metal case 2 is within these ranges, the metal case 2 is easily deformed so as to follow the pulsation of the fuel, and the effect of suppressing the pulsation of the fuel is enhanced.
  • the thickness of the first case portion 6 and the second case portion 7 is preferably 0.5 mm or more, for example. , more preferably 0.7 mm or more, and even more preferably 1.0 mm or more. From these points of view, the thickness of the first case portion 6 and the second case portion 7 is preferably, for example, 0.5 mm or more and 3.0 mm or less, and is 0.7 mm or more and 2.0 mm or less. is more preferable, and 1.0 mm or more and 1.6 mm or less is even more preferable. These thicknesses are, for example, the thicknesses of the thinnest portions of the first case portion 6 and the second case portion 7 .
  • An inlet opening 26 communicating with the storage space 21 is formed in the first case portion 6 .
  • the inlet opening 26 is an opening connected to the inlet 3 and passes through the first case portion 6 .
  • a plurality of injector cup openings 27 communicating with the storage space 21 are formed in the second case portion 7 .
  • the injector cup opening 27 is an opening connected to the injector cup 4 and passes through the second case portion 7 . Therefore, the number of injector cup openings 27 is the same as the number of injector cups 4 .
  • FIG. 7 is a cross-sectional view enlarging the vicinity of the inlet in FIG.
  • the inlet 3 is a portion that is connected to a fuel pipe to supply fuel supplied from the fuel pipe to the storage space 21.
  • the inlet 3 is an opening connecting portion joined to the first case portion 6 so as to cover a portion of the first case portion 6 adjacent to the inlet opening 26 . Since the inlet 3 is connected to the fuel pipe, it extends in a substantially cylindrical shape.
  • a channel 31 communicating with the inlet opening 26 is formed in the inlet 3 .
  • the channel 31 is a channel for supplying the fuel supplied from the fuel pipe to the storage space 21 .
  • the inlet 3 has a portion of the outer surface 62 of the first case portion 6 adjacent to the inlet opening 26 and a portion of the inner surface 63 of the first case portion 6 adjacent to the inlet opening 26. It is joined to the first case part 6 so as to cover it. That is, the inlet 3 is joined to the first case portion 6 around the inlet opening 26 so as to sandwich the first case portion 6 from the outer surface 62 side and the inner surface 63 side.
  • the inlet 3 has an outer surface portion 32 that partially covers the outer surface 62 of the first case portion 6 , an inner surface portion 33 that partially covers the inner surface 63 of the first case portion 6 , and the inlet opening 26 . and a connection portion 34 connected to the outer surface portion 32 and the inner surface portion 33 .
  • the connecting portion 34 is formed in a cylindrical shape within the inlet opening 26 so as not to block the flow path 31 .
  • FIG. 8 is an enlarged cross-sectional view of the vicinity of the injector cup in FIG.
  • each of the plurality of injector cups 4 is a portion for holding an injector. Since the plurality of injector cups 4 are basically of the same shape, only one injector cup 4 will be described as a representative.
  • the injector cup 4 is an opening connecting portion joined to the second case portion 7 so as to cover a portion of the second case portion 7 adjacent to the injector cup opening 27 .
  • the injector cup 4 is generally cup-shaped to hold the injector.
  • the injector cup 4 is formed with a channel 41 communicating with the injector cup opening 27 .
  • the flow path 41 is a flow path for supplying fuel from the storage space 21 to the injector.
  • the injector cup 4 includes a portion of the outer surface 72 of the second case portion 7 adjacent to the injector cup opening 27 and an inner surface 73 of the second case portion 7 adjacent to the injector cup opening 27. It is joined to the second case part 7 so as to partially cover it. That is, the injector cup 4 is joined to the second case portion 7 around the injector cup opening 27 so as to sandwich the second case portion 7 from the outer surface 72 side and the inner surface 73 side.
  • the injector cup 4 includes an outer surface portion 42 that partially covers the outer surface 72 of the second case portion 7, an inner surface portion 43 that partially covers the inner surface 73 of the second case portion 7, and an injector cup opening 27. and a connecting portion 44 connected to the outer surface portion 42 and the inner surface portion 43 via the .
  • the connecting portion 44 is formed in a cylindrical shape within the injector cup opening 27 so as not to block the flow path 41 .
  • a plurality of brackets 5 are parts for fixing the fuel distribution pipe 1 to a vehicle cylinder head, an intake manifold (none of which are shown), or the like. Since the plurality of brackets 5 have basically the same shape, only one bracket 5 will be described as a representative.
  • the bracket 5 is joined to the second case portion 7 so as to cover part of the outer surface of the second case portion 7 .
  • the bracket 5 is formed in an elongated plate shape to be fixed to an engine block or the like. One end of the bracket 5 is joined to the second case portion 7, and the other end of the bracket 5 is formed with a hole for inserting a fixing member such as a bolt.
  • the material of the first case portion 6 and the second case portion 7 is not particularly limited, and is, for example, iron (carbon steel), stainless steel, aluminum, or the like.
  • Stainless steel and aluminum have a smaller difference in thermal expansion with resin than iron.
  • the material of the first case portion 6 and the second case portion 7 is iron. It is more preferable to use stainless steel or aluminum.
  • the first case portion 6 and the second case portion 7 may be plated from the viewpoint of corrosion resistance and the like. In particular, when the material of the first case portion 6 and the second case portion 7 is iron, it is preferable to apply plating.
  • the materials of the sealing portion 8, the inlet 3, the injector cup 4, and the bracket 5, which are resin portions, are not particularly limited, and examples thereof include polyamide 66 (PA66-GF35) containing 35% glass fiber. .
  • the materials of the seal portion 8, the inlet 3, the injector cup 4, and the bracket 5 may be the same or different.
  • the first case portion 6 and the second case portion 7 are manufactured by press molding or the like.
  • the inlet 3 joined to the first case portion 6 is molded by injection-molding a resin to the first case portion 6 by insert molding or the like.
  • the first intermediate component in which the inlet 3 is joined to the first case portion 6 is manufactured.
  • the plurality of injector cups 4 and the plurality of brackets 5 joined to the second case portion 7 are molded.
  • a second intermediate component is manufactured in which the plurality of injector cups 4 and the plurality of brackets 5 are joined to the second case portion 7 .
  • the peripheral edge portion 61A of the first case portion 6 of the first intermediate component and the peripheral edge portion 71A of the second case portion 7 of the second intermediate component are overlapped.
  • resin is injected into the overlapped portion 25 of the first case portion 6 and the second case portion 7, thereby joining the first case portion 6 and the second case portion 7.
  • the seal portion 8 is molded, and the seal portion 8 connects the first case portion 6 and the second case portion 7 and seals between the first case portion 6 and the second case portion 7 .
  • the fuel distribution pipe 1 is manufactured.
  • the fuel distribution pipe 1 of the present embodiment includes a resin portion joined to a metal portion.
  • the occurrence can be suppressed.
  • the resin part is joined to the metal part so as to partially cover the metal part, the resin part and the metal part can be firmly joined by injection molding or the like.
  • the metal portion forms the storage space 21 in which the fuel is stored, the metal portion deforms so as to follow the pulsation of the fuel, thereby suppressing the pulsation of the fuel. As a result, it is possible to suppress the generation of carbon dioxide during manufacturing and suppress the pulsation of the fuel.
  • the fuel distribution pipe 1 has a first case portion 6 and a second case portion 7 which are metal portions, and the first case portion 6 and the second case portion 7 are separated by a seal portion 8 which is a resin portion. Connected and sealed. Therefore, the airtightness of the storage space 21 can be ensured, and the fuel distribution pipe 1 can be easily manufactured.
  • the seal portion 8 is joined to the first case portion 6 and the second case portion 7 so as to cover the connection portion between the first case portion 6 and the second case portion 7, the first case portion 6 and the second case portion 7
  • the second case portion 7 can be firmly joined, and the first case portion 6 and the second case portion 7 can be firmly joined to the seal portion 8, the inlet 3, the injector cup 4, and the bracket 5. can.
  • the first case portion 6 and the second case portion 7 are overlapped, and the seal portion 8 is formed between the first case portion 6 and the second case portion 7. It is joined to the first case portion 6 and the second case portion 7 so as to cover the overlapped portion 25 with. Therefore, the first case portion 6 and the second case portion 7 can be easily connected.
  • the inlet 3, which is an opening connecting portion is joined to the first case portion 6 so as to cover a portion of the first case portion 6 adjacent to the inlet opening 26.
  • the injector cup 4 which is an opening connecting portion is joined to the second case portion 7 so as to cover a portion of the second case portion 7 adjacent to the injector cup opening 27 . Therefore, the first case portion 6 and the second case portion 7, the inlet 3 and the injector cup 4 can be firmly joined.
  • the inlet 3, which is an opening connecting portion, is part of the outer surface 62 of the first case portion 6 adjacent to the inlet opening 26 and the first case portion 6 adjacent to the inlet opening 26. is joined to the first case part 6 so as to cover a part of the inner surface 63 of the. That is, the inlet 3 is joined to the first case portion 6 so as to sandwich the first case portion 6 therebetween.
  • the injector cup 4, which is the opening connecting portion is part of the outer surface 72 of the second case portion 7 adjacent to the injector cup opening 27 and the inner surface 73 of the second case portion 7 adjacent to the injector cup opening 27.
  • the injector cup 4 is joined to the second case portion 7 so as to sandwich the second case portion 7 therebetween. Therefore, the first case portion 6 and the second case portion 7, the inlet 3 and the injector cup 4 can be firmly joined.
  • the inlet 3 which is a resin portion, is joined to the first case portion 6 so as to cover a portion of the first case portion 6 adjacent to the inlet opening 26. Therefore, the first case portion 6 and the inlet 3 can be firmly joined by suppressing the generation of carbon dioxide when the first case portion 6 and the inlet 3 are joined.
  • the injector cup 4 which is a resin portion, is joined to the second case portion 7 so as to cover a portion of the second case portion 7 adjacent to the injector cup opening 27. Therefore, the generation of carbon dioxide when the second case portion 7 and the injector cup 4 are joined together can be suppressed, and the second case portion 7 and the injector cup 4 can be firmly joined together.
  • the bracket 5, which is a resin portion, is joined to the second case portion 7 so as to partially cover the outer surface 72 of the second case portion 7, which is a metal portion. Therefore, the generation of carbon dioxide when the second case portion 7 and the bracket 5 are joined together can be suppressed, and the second case portion 7 and the bracket 5 can be firmly joined together.
  • first case portion 6 and the second case portion 7 are plated, corrosion resistance can be improved. Therefore, for example, the first case portion 6 and the second case portion 7 can be made of inexpensive iron.
  • the second embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
  • FIG. 9 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the second embodiment.
  • the fuel distribution pipe 1A of the second embodiment includes a metal case 2A corresponding to the metal case 2 of the first embodiment.
  • the metal case 2A includes a first case portion 6A corresponding to the first case portion 6 of the first embodiment, a second case portion 7A corresponding to the second case portion 7 of the first embodiment, and a and a seal portion 8A corresponding to the seal portion 8.
  • the peripheral edge portion 61A of the first case portion 6A overlaps the peripheral edge portion 71A of the second case portion 7A.
  • the peripheral edge portion 61A of the first case portion 6A is arranged outside the peripheral edge portion 71A of the second case portion 7A.
  • the peripheral edge portion 61A of the first case portion 6A extends away from the peripheral edge portion 71A of the second case portion 7A.
  • the peripheral edge portion 71A of the second case portion 7A extends in a direction away from the peripheral edge portion 61A of the first case portion 6A. Therefore, a gap 22A is formed between the first case portion 6A and the second case portion 7A at the overlapping portion 25A.
  • the seal portion 8A is joined to the first case portion 6A and the second case portion 7A so as to cover the overlapping portion 25A of the first case portion 6A and the second case portion 7A. Further, the seal portion 8A is filled in the gap 22A formed between the first case portion 6A and the second case portion 7A in the overlapping portion 25A.
  • the peripheral edge portion 61A of the first case portion 6A extends away from the second case portion 7A at the overlapping portion 25A. For this reason, the first case portion 6A is caught by the seal portion 8A, so that the first case portion 6A with respect to the seal portion 8A in the direction perpendicular to the overlapping direction D1 of the first case portion 6A and the second case portion 7A. omission can be suppressed.
  • a gap 22A formed between the first case portion 6A and the second case portion 7A in the overlapping portion 25A is filled with the seal portion 8A.
  • the contact area between the first case portion 6A and the second case portion 7A and the seal portion 8A increases, so that the first case portion 6A and the second case portion 7A and the seal portion 8A can be joined more firmly. can be done.
  • the third embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
  • FIG. 10 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the third embodiment.
  • the fuel distribution pipe 1B of the third embodiment has a metal case 2B corresponding to the metal case 2 of the first embodiment.
  • the metal case 2B includes a first case portion 6B corresponding to the first case portion 6 of the first embodiment, a second case portion 7B corresponding to the second case portion 7 of the first embodiment, and a and a seal portion 8 ⁇ /b>B corresponding to the seal portion 8 .
  • the peripheral edge portion 61B of the first case portion 6B overlaps the peripheral edge portion 71B of the second case portion 7B.
  • the peripheral edge portion 61B of the first case portion 6B is arranged outside the peripheral edge portion 71B of the second case portion 7B.
  • the peripheral edge portion 61B of the first case portion 6B is bent in a direction away from the peripheral edge portion 71B of the second case portion 7B. Therefore, a gap 22B is formed between the first case portion 6B and the second case portion 7B at the overlapping portion 25B.
  • the seal portion 8B is joined to the first case portion 6B and the second case portion 7B so as to cover the overlapping portion 25B of the first case portion 6B and the second case portion 7B. Further, the seal portion 8B is filled in the gap 22B formed between the first case portion 6B and the second case portion 7B at the overlapping portion 25B.
  • the peripheral edge portion 61B of the first case portion 6B is bent in the direction away from the second case portion 7B at the overlapping portion 25B. For this reason, the first case portion 6B is caught by the seal portion 8B, so that the first case portion 6B with respect to the seal portion 8B moves in a direction perpendicular to the overlapping direction D2 of the first case portion 6B and the second case portion 7B. omission can be suppressed.
  • the gap 22B formed between the first case portion 6B and the second case portion 7B in the overlapping portion 25B is filled with the seal portion 8B.
  • the contact area between the first case portion 6B and the second case portion 7B and the seal portion 8B increases, so that the first case portion 6B and the second case portion 7B and the seal portion 8B can be joined more firmly. can be done.
  • the fourth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shape of the metal case. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
  • FIG. 11 is a sectional view corresponding to FIG. 7 of the fuel distribution pipe of the fourth embodiment.
  • FIG. 12 is a cross-sectional view corresponding to FIG. 8 of the fuel distribution pipe of the fourth embodiment.
  • the fuel distribution pipe 1C of the fourth embodiment includes a metal case 2C corresponding to the metal case 2 of the first embodiment.
  • the metal case 2C includes a first case portion 6C corresponding to the first case portion 6 of the first embodiment, a second case portion 7C corresponding to the second case portion 7 of the first embodiment, and a a seal portion (not shown) similar to the seal portion 8;
  • the first case portion 6C has a first case main body 64C and a first cylindrical portion 65C.
  • the first case main body 64C forms the storage space 21 together with the second case portion 7C.
  • the first cylindrical portion 65C forms the inlet opening 26C.
  • the inlet opening 26 ⁇ /b>C is an opening that communicates with the storage space 21 and is connected to the inlet 3 .
  • the first cylindrical portion 65C is bent with respect to the first case main body 64C.
  • the bending direction of the first cylindrical portion 65C with respect to the first case main body 64C is not particularly limited.
  • the first cylindrical portion 65C may be bent toward the opposite side of the storage space 21 (toward the outer surface 62C of the first case body 64C) with respect to the first case body 64C.
  • the first cylindrical portion 65C is bent to the opposite side of the storage space 21 with respect to the first case main body 64C.
  • the inlet 3 is joined to the first case portion 6C so as to cover a portion of the first case main body 64C and the first cylindrical portion 65C.
  • the second case portion 7C has a second case main body 74C and a second cylindrical portion 75C.
  • the second case main body 74C forms the storage space 21 together with the first case portion 6C.
  • the second cylindrical portion 75C forms an injector cup opening 27C.
  • the injector cup opening 27 ⁇ /b>C is an opening that communicates with the storage space 21 and is connected to the injector cup 4 .
  • the second cylindrical portion 75C is bent with respect to the second case main body 74C. The bending direction of the second cylindrical portion 75C with respect to the second case main body 74C is not particularly limited.
  • the second cylindrical portion 75C may be bent on the opposite side of the storage space 21 (on the outer surface 72C side of the second case body 74C) with respect to the second case body 74C. may be bent toward the storage space 21 side (the inner surface 73C side of the second case main body 74C).
  • the second cylindrical portion 75C is bent to the opposite side of the storage space 21 with respect to the second case main body 74C.
  • the injector cup 4 is joined to the second case portion 7C so as to cover a portion of the second case main body 74C and the second cylindrical portion 75C.
  • the first case portion 6C has the first cylindrical portion 65C that bends with respect to the first case main body 64C, and the inlet 3 is located on the first case main body 64C. It is joined to the first case portion 6C so as to cover a part and the first cylindrical portion 65C. Therefore, it is possible to prevent the inlet 3 from coming off the first case portion 6C. Moreover, since the contact area between the first case portion 6C and the inlet 3 increases, the first case portion 6C and the inlet 3 can be joined more firmly.
  • the second case portion 7C has a second cylindrical portion 75C that bends with respect to the second case body 74C, and the injector cup 4 covers a portion of the second case body 74C and the second cylindrical portion 75C. It is joined to the second case portion 7C as follows. Therefore, it is possible to prevent the injector cup 4 from coming off the second case portion 7C. Moreover, since the contact area between the second case portion 7C and the injector cup 4 increases, the second case portion 7C and the injector cup 4 can be joined more firmly.
  • the inlet 3 and the injector cup 4 are pressed against the first case portion 6C and the second case portion 7C due to shrinkage after the molding of the inlet 3 and the injector cup 4. 6C and the second case portion 7C.
  • the first cylindrical portion 65C is bent with respect to the first case main body 64C, the total thickness of the inlet 3 in the shrinking direction toward the first case portion 6C of the inlet 3 is integrated. Thickness can be increased. That is, the contraction amount of the inlet 3 toward the first case portion 6C can be increased. Therefore, it is possible to further improve the adhesion of the inlet 3 to the first case portion 6C.
  • the second cylindrical portion 75C is bent with respect to the second case main body 74C, the total thickness of the injector cup 4 in the contraction direction toward the second case portion 7C of the injector cup 4 is can be increased. That is, the amount of contraction of the injector cup 4 toward the second case portion 7C can be increased. Therefore, it is possible to further improve the adhesion of the injector cup 4 to the second case portion 7C.
  • the fifth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shape of the metal case. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
  • FIG. 13 is a front view showing the fuel distribution pipe of the fifth embodiment.
  • 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 13.
  • FIG. 13 and 14 the fuel distribution pipe 1D of the fifth embodiment has a metal case 2D corresponding to the metal case 2 of the first embodiment.
  • the metal case 2D is formed in a substantially L shape in a cross section perpendicular to the extending direction of the metal case 2D (arrangement direction of the plurality of injector cups 4) from the viewpoint of enhancing the effect of suppressing fuel pulsation. That is, the storage space 21D formed inside the metal case 2D is formed in a substantially L shape in the cross section.
  • the metal case 2D includes a first case portion 6D corresponding to the first case portion 6 of the first embodiment, a second case portion 7D similar to the second case portion 7 of the first embodiment, and a A seal portion 8D similar to the seal portion 8 is provided.
  • the first case portion 6 is formed in a substantially L shape in a cross section perpendicular to the extending direction of the metal case 2D.
  • the sixth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shapes of the metal case, the injector cup, and the bracket. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
  • FIG. 15 is a front view showing the fuel distribution pipe of the sixth embodiment.
  • FIG. 16 is a bottom view showing the fuel distribution pipe of the sixth embodiment.
  • 17 is a cross-sectional view along line XVII-XVII shown in FIG. 15.
  • the fuel distribution pipe 1E of the sixth embodiment includes a metal case 2E corresponding to the metal case 2 of the first embodiment, an inlet 3 similar to that of the first embodiment, a resin portion and an integrally formed portion 9E.
  • the metal case 2E includes a first case portion 6E corresponding to the first case portion 6 of the first embodiment, a second case portion 7E corresponding to the second case portion 7 of the first embodiment, and a and a seal portion 8 ⁇ /b>E corresponding to the seal portion 8 .
  • the first case portion 6E has a first flange portion 66E extending on the side opposite to the storage space 21 .
  • the first flange portion 66E forms a peripheral portion of the first case portion 6E.
  • the second case portion 7E has a second flange portion 76E extending on the side opposite to the storage space 21 .
  • the second flange portion 76E forms a peripheral portion of the second case portion 7E.
  • the second flange portion 76E overlaps the first flange portion 66E. That is, the first case portion 6E and the second case portion 7E are overlapped with each other at the first flange portion 66E and the second flange portion 76E.
  • the seal portion 8E is joined to the first case portion 6E and the second case portion 7E so as to cover at least a portion of the first flange portion 66E and at least a portion of the second flange portion 76E.
  • it is joined to the first case portion 6E and the second case portion 7E so as to cover the entire first flange portion 66E and the second flange portion 76E.
  • the inlet 3 is joined to the first case portion 6E so as to cover a portion of the first case portion 6E adjacent to the inlet opening (not shown).
  • the integrally formed portion 9E is joined to the second case portion 7E so as to partially cover the second case portion 7E.
  • the integrally formed portion 9E has a plurality of injector cups 4E corresponding to the plurality of injector cups 4 of the first embodiment and a plurality of brackets 5E corresponding to the plurality of brackets 5 of the first embodiment. That is, the plurality of injector cups 4E and the plurality of brackets 5E are integrally formed as the integrally formed portion 9E.
  • Each of the plurality of injector cups 4E is joined to the second case portion 7E so as to cover a portion of the second case portion 7E adjacent to the injector cup opening 27E.
  • a channel 41E communicating with the injector cup opening 27E is formed in each of the plurality of injector cups 4E.
  • Each of the plurality of brackets 5E is joined to the second case portion 7E so as to cover part of the outer surface of the second case portion 7E.
  • the first flange portion 66E of the first case portion 6E extending on the side opposite to the storage space 21 and the second case portion 7E extending on the side opposite to the storage space 21 The first case portion 6E and the second case portion are overlapped with the second flange portion 76E, and the seal portion 8E covers at least a portion of the first flange portion 66E and at least a portion of the second flange portion 76E. 7E. That is, the seal portion 8E is joined to the first case portion 6E and the second case portion 7E so as to sandwich the first flange portion 66E and the second flange portion 76E. Therefore, the first case portion 6E and the second case portion 7E can be connected more firmly by the seal portion 8E in the overlapping direction D3 of the first flange portion 66E and the second flange portion 76E.
  • a plurality of injector cups 4E and a plurality of brackets 5E are integrally formed as an integrally formed portion 9E, and the integrally formed portion 9E covers a part of the second case portion 7E. It is joined to the second case part 7E. Therefore, compared to the case where the plurality of injector cups 4E and the plurality of brackets 5E are separated from each other, the joint area between the plurality of injector cups 4E and the plurality of brackets 5E and the second case portion 7E can be increased. In addition, it is possible to complicate the joint structure between the plurality of injector cups 4E and the plurality of brackets 5E and the second case portion 7E. Thereby, the joint strength of the plurality of injector cups 4E and the plurality of brackets 5E to the second case portion 7E can be increased.
  • the seventh embodiment is basically the same as the sixth embodiment, and differs from the sixth embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the sixth embodiment will be described, and descriptions similar to those of the sixth embodiment will be omitted.
  • FIG. 18 is a sectional view corresponding to FIG. 17 of the fuel distribution pipe of the seventh embodiment.
  • the fuel distribution pipe 1F of the seventh embodiment has a metal case 2F corresponding to the metal case 2E of the sixth embodiment.
  • the metal case 2F includes a first case portion 6F corresponding to the first case portion 6E of the sixth embodiment, a second case portion 7F corresponding to the second case portion 7E of the sixth embodiment, and a and a seal portion 8F corresponding to the seal portion 8E.
  • the first case part 6F has a first flange part 66F corresponding to the first flange part 66E of the sixth embodiment.
  • the second case portion 7F has a second flange portion 76F corresponding to the second flange portion 76E of the sixth embodiment.
  • the first flange portion 66F and the second flange portion 76F extend to the side opposite to the storage space 21 and overlap each other.
  • the first flange portion 66F and the second flange portion 76F are bent in a direction away from each other. That is, the first flange portion 66F overlaps with the second flange portion 76F and is bent in a direction away from the second flange portion 76F.
  • the second flange portion 76F overlaps with the first flange portion 66F and is bent in a direction away from the first flange portion 66F. Therefore, a gap 22F is formed between the first flange portion 66F and the second flange portion 76F.
  • the seal portion 8F is joined to the first case portion 6F and the second case portion 7F so as to cover at least a portion of the first flange portion 66F and at least a portion of the second flange portion 76F.
  • it is joined to the first case portion 6F and the second case portion 7F so as to cover the entire first flange portion 66F and the second flange portion 76F.
  • the seal portion 8F is filled in the gap 22F formed between the first flange portion 66F and the second flange portion 76F.
  • the first flange portion 66F and the second flange portion 76F are bent in directions separating from each other. Therefore, since the first flange portion 66F and the second flange portion 76F are caught by the seal portion 8F, the seal portion 8B in the direction orthogonal to the overlapping direction D4 of the first flange portion 66F and the second flange portion 76F It is possible to suppress the first case portion 6B from coming off.
  • the gap 22F formed between the first flange portion 66F and the second flange portion 76F is filled with the seal portion 8F.
  • the contact area between the first case portion 6F and the second case portion 7F and the seal portion 8F increases, so that the first case portion 6F and the second case portion 7F and the seal portion 8F can be joined more firmly. can be done.
  • the eighth embodiment is basically the same as the sixth embodiment, and differs from the sixth embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the sixth embodiment will be described, and descriptions similar to those of the sixth embodiment will be omitted.
  • FIG. 19 is a plan view showing the fuel distribution pipe of the eighth embodiment.
  • 20 is a cross-sectional view taken along line XX-XX shown in FIG. 19.
  • the fuel distribution pipe 1G of the eighth embodiment includes a metal case 2G corresponding to the metal case 2E of the sixth embodiment.
  • the metal case 2G includes a first case portion 6G corresponding to the first case portion 6E of the sixth embodiment, a second case portion 7G corresponding to the second case portion 7E of the sixth embodiment, and a and a seal portion 8G corresponding to the seal portion 8E.
  • the first case part 6G has a first flange part 66G corresponding to the first flange part 66E of the sixth embodiment.
  • the second case portion 7G has a second flange portion 76G corresponding to the second flange portion 76E of the sixth embodiment.
  • the first flange portion 66G and the second flange portion 76G extend to the side opposite to the storage space 21 and overlap each other.
  • a plurality of holes 28G penetrating through the first flange portion 66G and the second flange portion 76G are formed in the first flange portion 66G and the second flange portion 76G.
  • Each of the plurality of holes 28G is formed by a first hole 67G formed in the first flange portion 66G and a second hole 77G formed in the second flange portion 76G.
  • the number of holes 28G is not particularly limited, and may be one, for example.
  • the seal portion 8G is joined to the first case portion 6G and the second case portion 7G so as to cover at least a portion of the first flange portion 66G and at least a portion of the second flange portion 76G.
  • it is joined to the first case portion 6G and the second case portion 7G so as to cover the entire first flange portion 66G and the second flange portion 76G.
  • the seal portion 8G is filled in each of the plurality of holes 28G passing through the first flange portion 66G and the second flange portion 76G.
  • each of the plurality of holes 28G passing through the first flange portion 66G and the second flange portion 76G is filled with the seal portion 8G. That is, the seal portion 8G sandwiches the first case portion 6G and the second case portion 7G between the first flange portion 66G and the second flange portion 76G, and overlaps the first case portion 6G and the second case portion 7G. It is joined to the first case portion 6G and the second case portion 7G so as to inhibit relative movement of the first case portion 6G and the second case portion 7G in the direction orthogonal to the alignment direction D5. Therefore, the first case portion 6G and the second case portion 7G can be connected more firmly by the seal portion 8G.
  • the seal portion, inlet, injector cup, and bracket are assumed to be resin portions.
  • some of the inlet, injector cup and bracket may be metal parts. Even if some of these parts are metal parts, there are fewer brazed points than metal fuel distribution pipes where all parts are brazed, so carbon dioxide emissions are suppressed during manufacturing. be able to.
  • portions other than these may be resin portions.
  • the fuel distribution pipe includes a sensor connection portion for connecting a fuel pressure sensor that detects the pressure of the fuel stored in the storage space
  • the sensor connection portion may be a resin portion.
  • the metal case has been described as including the first case portion and the second case portion, which are metal portions, and the seal portion, which is a resin portion.
  • the metal case may be provided with only the metal portion in which the first case portion and the second case portion are integrated without the seal portion being the resin portion.
  • One aspect of the present invention can be used as a fuel distribution pipe that distributes and supplies fuel to a plurality of injectors.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

This fuel distribution pipe for distributing and supplying fuel to a plurality of injectors is provided with: a metal portion forming a storage space for storing the fuel; and a resin portion which is joined to the metal portion so as to cover part of the metal portion.

Description

燃料分配管fuel distribution pipe
　本発明の一側面は、燃料を複数のインジェクタに分配供給する燃料分配管に関する。 One aspect of the present invention relates to a fuel distribution pipe that distributes and supplies fuel to a plurality of injectors.
　燃料を複数のインジェクタに分配供給する燃料分配管としては、例えば、特許文献１に記載されたような金属製の燃料分配管や、特許文献２に記載されたような樹脂製の燃料分配管が知られている。 Fuel distribution pipes that distribute and supply fuel to a plurality of injectors include, for example, metal fuel distribution pipes as described in Patent Document 1 and resin fuel distribution pipes as described in Patent Document 2. Are known.
特開２０１０―２４２７１２号公報JP 2010-242712 A 特開２０１１―２３１６９５号公報JP 2011-231695 A
　金属製の燃料分配管は、肉厚を薄くすることができるため、インジェクタの開閉に起因する燃料の脈動を燃料分配管の変形により抑制することができる。しかしながら、金属製の燃料分配管は、複数の部材をろう付けすることにより製造される。ろう付けでは、金属製のろう材を溶融するために大量の二酸化炭素が発生する。また、金属製の燃料分配管は、樹脂製の燃料分配管に比べて、製造コストが高くなる。なお、鉄（炭素鋼）製の燃料分配管は、ステンレス製やアルミ製の燃料分配管に比べて製造コストを低くすることができるが、耐食性の観点からめっきで被覆する必要があるため、製造拠点が限られる。 Because the thickness of the metal fuel distribution pipe can be reduced, fuel pulsation caused by opening and closing the injector can be suppressed by deformation of the fuel distribution pipe. However, metal fuel distribution pipes are manufactured by brazing multiple pieces together. Brazing generates a large amount of carbon dioxide to melt the brazing metal. Moreover, metal fuel distribution pipes are more expensive to manufacture than resin fuel distribution pipes. Iron (carbon steel) fuel distribution pipes can be manufactured at lower cost than stainless steel or aluminum fuel distribution pipes. Limited bases.
　一方、樹脂製の燃料分配管は、金属製の燃料分配管のように金属製のろう材を溶融する必要がないため、製造時の大量の二酸化炭素の発生を抑制することができる。また、樹脂製の燃料分配管は、金属製の燃料分配管に比べて、軽量であり、製造コストを低くすることができる。しかしながら、樹脂製の燃料分配管は、剛性を確保するために肉厚を厚くする必要があるため、金属製の燃料分配管のような燃料の脈動抑制効果を得ることができない。 On the other hand, unlike metal fuel distribution pipes, resin fuel distribution pipes do not require melting of metal brazing material, so it is possible to suppress the generation of a large amount of carbon dioxide during manufacturing. In addition, resin fuel distribution pipes are lighter in weight than metal fuel distribution pipes, and the manufacturing cost can be reduced. However, resin-made fuel distribution pipes need to be thick in order to ensure rigidity, and therefore cannot obtain the effect of suppressing fuel pulsation that metal fuel distribution pipes have.
　そこで、本発明の一側面は、製造時の二酸化炭素の発生を抑制することができるとともに燃料の脈動を抑制することができる燃料分配管を提供することを課題とする。 Therefore, one aspect of the present invention aims to provide a fuel distribution pipe capable of suppressing the generation of carbon dioxide during manufacturing and suppressing fuel pulsation.
　本発明の一側面に係る燃料分配管は、燃料を複数のインジェクタに分配供給する燃料分配管であって、燃料を貯留する貯留空間を形成する金属部と、金属部の一部を覆うように金属部に接合された樹脂部と、を備える。 A fuel distribution pipe according to one aspect of the present invention is a fuel distribution pipe that distributes and supplies fuel to a plurality of injectors, and includes a metal portion that forms a storage space for storing fuel, and a metal portion that partially covers the metal portion. and a resin portion bonded to the metal portion.
　この燃料分配管では、金属部に接合された樹脂部を備えるため、全ての部材がろう付けされる金属製の燃料分配管に比べて、製造時の二酸化炭素の発生を抑制することができる。また、樹脂部は、金属部の一部を覆うように金属部に接合されているため、射出成型等により、樹脂部と金属部とを強固に接合することができる。そして、金属部が燃料を貯留する貯留空間を形成するため、燃料の脈動に追従するように金属部が変形することで、燃料の脈動を抑制することができる。これにより、製造時の二酸化炭素の発生を抑制することができるとともに燃料の脈動を抑制することができる。 Since this fuel distribution pipe has a resin part joined to a metal part, it is possible to suppress the generation of carbon dioxide during manufacturing compared to a metal fuel distribution pipe in which all members are brazed. Moreover, since the resin part is joined to the metal part so as to partially cover the metal part, the resin part and the metal part can be firmly joined by injection molding or the like. Since the metal portion forms a storage space for storing the fuel, the metal portion deforms so as to follow the pulsation of the fuel, thereby suppressing the pulsation of the fuel. As a result, it is possible to suppress the generation of carbon dioxide during manufacturing and suppress the pulsation of the fuel.
　金属部は、第一ケース部と、第二ケース部と、を有し、樹脂部は、第一ケース部と第二ケース部とを接続して第一ケース部と第二ケース部との間をシールするシール部を有し、シール部は、第一ケース部と第二ケース部との接続部分を覆うように第一ケース部及び第二ケース部に接合されていてもよい。この燃料分配管では、金属部が第一ケース部及び第二ケース部を有し、第一ケース部と第二ケース部とは、樹脂部であるシール部により接続及びシールされている。このため、貯留空間の気密性を確保することができるとともに、燃料分配管を容易に製造することができる。また、シール部は、第一ケース部と第二ケース部との接続部分を覆うように第一ケース部及び第二ケース部に接合されているため、第一ケース部及び第二ケース部と樹脂部とを強固に接合することができる。 The metal portion has a first case portion and a second case portion, and the resin portion connects the first case portion and the second case portion to form a space between the first case portion and the second case portion. and the sealing portion may be joined to the first case portion and the second case portion so as to cover the connection portion between the first case portion and the second case portion. In this fuel distribution pipe, the metal portion has a first case portion and a second case portion, and the first case portion and the second case portion are connected and sealed by a seal portion, which is a resin portion. Therefore, the airtightness of the storage space can be ensured, and the fuel distribution pipe can be easily manufactured. In addition, since the sealing portion is joined to the first case portion and the second case portion so as to cover the connection portion between the first case portion and the second case portion, the first case portion and the second case portion and the resin It is possible to firmly join the parts.
　第二ケース部の少なくとも一部は、第一ケース部の少なくとも一部に重ね合わされており、シール部は、第一ケース部と第二ケース部との重ね合わせ部分を覆うように第一ケース部及び第二ケース部に接合されていてもよい。この燃料分配管では、第一ケース部の少なくとも一部と第二ケース部の少なくとも一部とが重ね合わされており、シール部が、第一ケース部と第二ケース部との重ね合わせ部分を覆うように第一ケース部及び第二ケース部に接合されている。このため、第一ケース部と第二ケース部との接続を容易に行うことができるる。 At least a portion of the second case portion overlaps at least a portion of the first case portion, and the seal portion covers the overlapped portion of the first case portion and the second case portion. and the second case portion. In this fuel distribution pipe, at least a portion of the first case portion and at least a portion of the second case portion are overlapped, and the seal portion covers the overlapping portion of the first case portion and the second case portion. It is joined to the first case part and the second case part as follows. Therefore, it is possible to easily connect the first case portion and the second case portion.
　重ね合わせ部分において、第一ケース部の少なくとも一部は、第二ケース部から離れる方向に延びていてもよい。この燃料分配管では、重ね合わせ部分において、第一ケース部の少なくとも一部が第二ケース部から離れる方向に延びている。このため、第一ケース部がシール部に引っ掛かることで、第一ケース部と第二ケース部との重ね合わせ方向と直交する方向への、シール部に対する第一ケース部の抜けを抑制することができる。 At least a portion of the first case portion may extend away from the second case portion in the overlapping portion. In this fuel distribution pipe, at least part of the first case portion extends in a direction away from the second case portion at the overlapping portion. Therefore, the first case portion is caught by the seal portion, thereby suppressing the first case portion from coming off the seal portion in the direction orthogonal to the overlapping direction of the first case portion and the second case portion. can.
　重ね合わせ部分において、第一ケース部の少なくとも一部は、第二ケース部から離れる方向に屈曲していてもよい。この燃料分配管では、重ね合わせ部分において、第一ケース部の少なくとも一部が第二ケース部から離れる方向に屈曲している。このため、第一ケース部がシール部に引っ掛かることで、第一ケース部と第二ケース部との重ね合わせ方向と直交する方向への、シール部に対する第一ケース部の抜けを抑制することができる。 At least a portion of the first case portion may be bent in a direction away from the second case portion in the overlapping portion. In this fuel distribution pipe, at least a portion of the first case portion is bent in a direction away from the second case portion at the overlapping portion. Therefore, the first case portion is caught by the seal portion, thereby suppressing the first case portion from coming off the seal portion in the direction orthogonal to the overlapping direction of the first case portion and the second case portion. can.
　重ね合わせ部分における第一ケース部と第二ケース部との間に間隙が形成されており、シール部は、間隙に充填されていてもよい。この燃料分配管では、重ね合わせ部における第一ケース部と第二ケース部との間に形成された間隙にシール部が充填されている。これにより、第一ケース及び第二ケースとシール部との接触面積が増大するため、第一ケース部及び第二ケース部とシール部とを更に強固に接合することができる。 A gap may be formed between the first case part and the second case part in the overlapping portion, and the seal part may be filled in the gap. In this fuel distribution pipe, a gap formed between the first case portion and the second case portion at the overlapping portion is filled with the sealing portion. As a result, the contact area between the first and second cases and the seal portion is increased, so that the first and second case portions and the seal portion can be joined more firmly.
　第一ケース部は、貯留空間とは反対側に延びる第一フランジ部を有し、第二ケース部は、貯留空間とは反対側に延びて第一フランジ部に重ね合わされる第二フランジ部を有し、シール部は、第一フランジ部の少なくとも一部及び第二フランジ部の少なくとも一部を覆うように第一ケース部及び第二ケース部に接合されていてもよい。この燃料分配管では、貯留空間とは反対側に延びる第一ケース部の第一フランジ部と貯留空間とは反対側に延びる第二ケース部の第二フランジ部とが重ね合わされており、シール部が、第一フランジ部の少なくとも一部及び第二フランジ部の少なくとも一部を覆うように第一ケース部及び第二ケース部に接合されている。つまり、シール部は、第一フランジ部と第二フランジ部とを挟み込むように、第一ケース部及び第二ケース部に接合されている。このため、第一フランジ部と第二フランジ部との重ね合わせ方向において、シール部により第一ケース部と第二ケース部とを更に強固に接続することができる。 The first case part has a first flange part extending on the side opposite to the storage space, and the second case part has a second flange part extending on the side opposite to the storage space and superimposed on the first flange part. The sealing portion may be joined to the first case portion and the second case portion so as to cover at least a portion of the first flange portion and at least a portion of the second flange portion. In this fuel distribution pipe, the first flange portion of the first case portion extending on the side opposite to the storage space and the second flange portion of the second case portion extending on the side opposite to the storage space are overlapped with each other, and the seal portion are joined to the first case portion and the second case portion so as to cover at least a portion of the first flange portion and at least a portion of the second flange portion. That is, the seal portion is joined to the first case portion and the second case portion so as to sandwich the first flange portion and the second flange portion. Therefore, the first case portion and the second case portion can be connected more firmly by the seal portion in the overlapping direction of the first flange portion and the second flange portion.
　第一フランジ部及び第二フランジ部は、第一フランジ部及び第二フランジ部を貫通する穴を有しており、シール部は、穴に充填されていてもよい。この燃料分配管では、第一フランジ部及び第二フランジ部を貫通する穴にシール部が充填されている。つまり、シール部は、第一フランジ部と第二フランジ部とを挟み込むとともに、第一フランジ部と第二フランジ部との重ね合わせ方向と直交する方向への第一フランジ部及び第二フランジ部の相対移動を阻害するように、第一ケース部及び第二ケース部に接合されている。このため、シール部により第一ケース部と第二ケース部とを更に強固に接続することができる。 The first flange portion and the second flange portion may have holes penetrating through the first flange portion and the second flange portion, and the holes may be filled with the seal portion. In this fuel distribution pipe, a seal portion is filled in a hole passing through the first flange portion and the second flange portion. That is, the seal portion sandwiches the first flange portion and the second flange portion, and the first flange portion and the second flange portion extend in a direction perpendicular to the overlapping direction of the first flange portion and the second flange portion. It is joined to the first case portion and the second case portion so as to inhibit relative movement. Therefore, the seal portion can connect the first case portion and the second case portion more firmly.
　金属部は、貯留空間に連通された開口を有し、樹脂部は、開口に隣接する金属部の一部を覆うように金属部に接合された開口接続部を有してもよい。この燃料分配管では、樹脂部である開口接続部が、開口に隣接する金属部の一部を覆うように金属部に接合されている。このため、金属部と開口接続部とを強固に接合することができる。 The metal part may have an opening communicating with the storage space, and the resin part may have an opening connecting part joined to the metal part so as to cover a part of the metal part adjacent to the opening. In this fuel distribution pipe, the opening connecting portion, which is a resin portion, is joined to the metal portion so as to cover a portion of the metal portion adjacent to the opening. Therefore, the metal portion and the opening connection portion can be firmly joined.
　開口接続部は、開口に隣接する金属部の外表面の一部及び開口に隣接する金属部の内表面の一部を覆うように金属部に接合されていてもよい。この燃料分配管では、開口接続部が、開口に隣接する金属部の外表面の一部及び開口に隣接する金属部の内表面の一部を覆うように金属部に接合されている。つまり、開口接続部は、金属部を挟み込むように金属部に接合されている。このため、金属部と開口接続部とを強固に接合することができる。 The opening connecting part may be joined to the metal part so as to cover part of the outer surface of the metal part adjacent to the opening and part of the inner surface of the metal part adjacent to the opening. In this fuel distribution pipe, the opening connecting portion is joined to the metal portion so as to cover a portion of the outer surface of the metal portion adjacent to the opening and a portion of the inner surface of the metal portion adjacent to the opening. That is, the opening connecting portion is joined to the metal portion so as to sandwich the metal portion. Therefore, the metal portion and the opening connection portion can be firmly joined.
　金属部は、貯留空間を形成するケース本体と、ケース本体に対して屈曲して開口を形成する円筒部と、を有し、開口接続部は、ケース本体の一部及び円筒部を覆うように金属部に接合されていてもよい。この燃料分配管では、金属部が、ケース本体に対して屈曲する円筒部を有し、開口接続部が、ケース本体の一部及び円筒部を覆うように金属部に接合されている。このため、金属部に対する開口接続部の抜けを抑制することができる。また、金属部と開口接続部との接触面積が増大するため、金属部と開口接続部とを更に強固に接合することができる。ところで、燃料分配管の製造時は、開口接続部の成形後の収縮により、開口接続部は金属部に押し付けられて金属部に密着する。この燃料分配管では、円筒部がケース本体に対して屈曲しているため、開口接続部の金属部に向かう収縮方向における開口接続部の肉厚を積算した総肉厚を増加することができる。つまり、金属部に向かう開口接続部の収縮量を増加することができる。このため、金属部に対する開口接続部の密着性を向上することができる。 The metal part has a case body that forms the storage space and a cylindrical part that bends with respect to the case body to form an opening, and the opening connecting part covers a part of the case body and the cylindrical part. It may be joined to the metal part. In this fuel distribution pipe, the metal portion has a cylindrical portion that bends with respect to the case body, and the opening connecting portion is joined to the metal portion so as to cover a portion of the case body and the cylindrical portion. Therefore, it is possible to prevent the opening connecting portion from coming off the metal portion. Moreover, since the contact area between the metal portion and the opening connection portion is increased, the metal portion and the opening connection portion can be joined more firmly. By the way, when the fuel distribution pipe is manufactured, the opening connection part is pressed against the metal part due to shrinkage after molding of the opening connection part, and is closely attached to the metal part. In this fuel distribution pipe, since the cylindrical portion is bent with respect to the case main body, it is possible to increase the total thickness obtained by adding up the thickness of the opening connection portion in the contraction direction toward the metal portion of the opening connection portion. That is, it is possible to increase the amount of contraction of the opening connecting portion toward the metal portion. Therefore, it is possible to improve the adhesion of the opening connecting portion to the metal portion.
　開口接続部は、燃料を貯留空間に供給するために開口に連通される流路が形成されたインレットを有してもよい。この燃料分配管では、樹脂部であるインレットが、開口に隣接する金属部の一部を覆うように金属部に接合されている。このため、金属部とインレットとを接合する際の二酸化炭素の発生を抑制して、金属部とインレットとを強固に接合することができる。 The opening connection part may have an inlet formed with a flow path communicating with the opening for supplying fuel to the storage space. In this fuel distribution pipe, the inlet, which is a resin part, is joined to the metal part so as to cover part of the metal part adjacent to the opening. Therefore, it is possible to suppress the generation of carbon dioxide when joining the metal portion and the inlet, and to firmly join the metal portion and the inlet.
　開口接続部は、インジェクタを保持するとともに、燃料をインジェクタに供給するために開口に連通される流路が形成されたインジェクターカップを有してもよい。この燃料分配管では、樹脂部であるインジェクターカップが、開口に隣接する金属部の一部を覆うように金属部に接合されている。このため、金属部とインジェクターカップとを接合する際の二酸化炭素の発生を抑制して、金属部とインジェクターカップとを強固に接合することができる。 The opening connection part may have an injector cup formed with a flow path communicating with the opening for holding the injector and supplying fuel to the injector. In this fuel distribution pipe, the injector cup, which is a resin part, is joined to the metal part so as to cover part of the metal part adjacent to the opening. Therefore, it is possible to suppress the generation of carbon dioxide when joining the metal portion and the injector cup, and to firmly join the metal portion and the injector cup.
　樹脂部は、燃料分配管を車両に固定するためのブラケットを有し、ブラケットは、金属部の外表面の一部を覆うように金属部に接合されていてもよい。この燃料分配管では、樹脂部であるブラケットが、金属部の外表面の一部を覆うように金属部に接合されている。このため、金属部とブラケットとを接合する際の二酸化炭素の発生を抑制して、金属部とブラケットとを強固に接合することができる。 The resin part may have a bracket for fixing the fuel distribution pipe to the vehicle, and the bracket may be joined to the metal part so as to cover part of the outer surface of the metal part. In this fuel distribution pipe, a bracket, which is a resin portion, is joined to the metal portion so as to partially cover the outer surface of the metal portion. Therefore, it is possible to suppress the generation of carbon dioxide when joining the metal part and the bracket, and to firmly join the metal part and the bracket.
　樹脂部は、インジェクタを保持するためのインジェクターカップと、燃料分配管を車両に固定するためのブラケットと、が一体成形された一体形成部を有し、一体形成部は、金属部の一部を覆うように金属部に接合されていてもよい。この燃料分配管では、インジェクターカップとブラケットとが一体形成部として一体成形されており、一体形成部が金属部の一部を覆うように金属部に接合されている。このため、インジェクターカップとブラケットとが分離されている場合に比べて、インジェクターカップ及びブラケットと金属部との接合面積を増大させることができるとともに、インジェクターカップ及びブラケットと金属部との接合構造を複雑化することができる。これにより、金属部に対するインジェクターカップ及びブラケットの接合強度を高くすることができる。 The resin portion has an integrally formed portion in which an injector cup for holding the injector and a bracket for fixing the fuel distribution pipe to the vehicle are integrally formed, and the integrally formed portion is a part of the metal portion. It may be joined to the metal part so as to cover it. In this fuel distribution pipe, the injector cup and the bracket are integrally formed as an integrally formed portion, and the integrally formed portion is joined to the metal portion so as to partially cover the metal portion. Therefore, compared to the case where the injector cup and the bracket are separated, the joint area between the injector cup and the bracket and the metal part can be increased, and the joint structure between the injector cup and the bracket and the metal part can be complicated. can be Thereby, the joint strength of the injector cup and the bracket to the metal portion can be increased.
　金属部には、めっきが施されていてもよい。この燃料分配管では、金属部にめっきが施されているため、耐食性を向上することができる。このため、例えば、金属部を、安価な鉄製とすることができる。 The metal part may be plated. In this fuel distribution pipe, since the metal portion is plated, corrosion resistance can be improved. Therefore, for example, the metal portion can be made of inexpensive iron.
　本発明の一側面によれば、製造時の二酸化炭素の発生を抑制することができるとともに燃料の脈動を抑制することができる。 According to one aspect of the present invention, it is possible to suppress the generation of carbon dioxide during manufacturing and suppress the pulsation of fuel.
第一実施形態の燃料分配管を示す正面図である。It is a front view which shows the fuel distribution pipe of 1st embodiment. 第一実施形態の燃料分配管を示す平面図である。It is a top view which shows the fuel distribution pipe of 1st embodiment. 第一実施形態の燃料分配管を示す底面図である。It is a bottom view which shows the fuel distribution pipe of 1st embodiment. 図２に示すＩＶ－ＩＶ線における断面図である。3 is a cross-sectional view taken along line IV-IV shown in FIG. 2; FIG. 図１に示すＶ－Ｖ線における断面図である。FIG. 2 is a cross-sectional view taken along line VV shown in FIG. 1; 図１に示すＶＩ－ＶＩ線における断面図である。2 is a cross-sectional view taken along line VI-VI shown in FIG. 1; FIG. 図４のインレットの近傍を拡大した断面図である。5 is an enlarged cross-sectional view of the vicinity of the inlet in FIG. 4; FIG. 図４のインジェクターカップの近傍を拡大した断面図である。5 is an enlarged cross-sectional view of the vicinity of the injector cup of FIG. 4; FIG. 第二実施形態の燃料分配管の、図５に対応する断面図である。FIG. 6 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the second embodiment; 第三実施形態の燃料分配管の、図５に対応する断面図である。6 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the third embodiment; FIG. 第四実施形態の燃料分配管の、図７に対応する断面図である。FIG. 8 is a cross-sectional view corresponding to FIG. 7 of the fuel distribution pipe of the fourth embodiment; 第四実施形態の燃料分配管の、図８に対応する断面図である。FIG. 9 is a cross-sectional view corresponding to FIG. 8 of the fuel distribution pipe of the fourth embodiment; 第五実施形態の燃料分配管を示す正面図である。It is a front view which shows the fuel distribution pipe of 5th embodiment. 図１３に示すＸＩＶ－ＸＩＶ線における断面図である。FIG. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 13; 第六実施形態の燃料分配管を示す正面図である。It is a front view which shows the fuel distribution pipe of 6th embodiment. 第六実施形態の燃料分配管を示す底面図である。It is a bottom view which shows the fuel distribution pipe of 6th embodiment. 図１５に示すＸＶＩＩ－ＸＶＩＩ線における断面図である。FIG. 16 is a cross-sectional view along line XVII-XVII shown in FIG. 15; 第七実施形態の燃料分配管の、図１７に対応する断面図である。FIG. 18 is a cross-sectional view corresponding to FIG. 17 of the fuel distribution pipe of the seventh embodiment; 第八実施形態の燃料分配管を示す平面図である。FIG. 11 is a plan view showing a fuel distribution pipe of an eighth embodiment; 図１９に示すＸＸ－ＸＸ線における断面図である。FIG. 20 is a cross-sectional view taken along line XX-XX shown in FIG. 19;
　以下、本発明の実施形態について、図面を参照して詳細に説明する。なお、以下の説明において同一又は相当要素には同一符号を付し、重複する説明を省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference numerals, and overlapping descriptions are omitted.
［第一実施形態］
　図１は、第一実施形態の燃料分配管１を示す正面図である。図２は、第一実施形態の燃料分配管１を示す平面図である。図３は、第一実施形態の燃料分配管１を示す底面図である。図４は、図２に示すＩＶ－ＩＶ線における断面図である。図５は、図１に示すＶ－Ｖ線における断面図である。図６は、図１に示すＶＩ－ＶＩ線における断面図である。図１～図６に示す第一実施形態の燃料分配管１は、燃料配管（不図示）から供給された燃料を、複数のインジェクタ（不図示）に分配供給するものである。燃料分配管１は、フューエルインジェクションレール、フューエルデリバリパイプ等とも呼ばれる。 [First embodiment]
FIG. 1 is a front view showing the fuel distribution pipe 1 of the first embodiment. FIG. 2 is a plan view showing the fuel distribution pipe 1 of the first embodiment. FIG. 3 is a bottom view showing the fuel distribution pipe 1 of the first embodiment. FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. FIG. 5 is a cross-sectional view taken along line VV shown in FIG. FIG. 6 is a cross-sectional view along line VI-VI shown in FIG. A fuel distribution pipe 1 of the first embodiment shown in FIGS. 1 to 6 distributes and supplies fuel supplied from a fuel pipe (not shown) to a plurality of injectors (not shown). The fuel distribution pipe 1 is also called a fuel injection rail, a fuel delivery pipe, or the like.
　燃料分配管１は、金属ケース２と、樹脂部であるインレット３と、樹脂部である複数のインジェクターカップ４と、樹脂部である複数のブラケット５と、を備える。なお、図面では、３個のインジェクターカップ４を備える燃料分配管１を示しているが、インジェクターカップ４の数は、２以上の複数であれば特に限定されない。また、図面では、２個のブラケット５を備える燃料分配管１を示しているが、ブラケット５の数は特に限定されない。 The fuel distribution pipe 1 includes a metal case 2, an inlet 3 which is a resin portion, a plurality of injector cups 4 which are a resin portion, and a plurality of brackets 5 which are a resin portion. Although the drawing shows the fuel distribution pipe 1 having three injector cups 4, the number of injector cups 4 is not particularly limited as long as it is two or more. Moreover, although the drawing shows the fuel distribution pipe 1 having two brackets 5 , the number of brackets 5 is not particularly limited.
　金属ケース２は、複数のインジェクタに燃料を供給するために、燃料配管から供給された燃料を一時的に貯留するための部分である。金属ケース２は、例えば、エンジンの気筒列方向（クランク軸方向）に沿って直線状に延びている。金属ケース２の内部には、燃料を貯留する貯留空間２１が形成されている。 The metal case 2 is a part for temporarily storing the fuel supplied from the fuel pipe in order to supply fuel to multiple injectors. The metal case 2 extends linearly, for example, along the cylinder row direction (crankshaft direction) of the engine. A storage space 21 for storing fuel is formed inside the metal case 2 .
　金属ケース２は、金属部である第一ケース部６と、金属部である第二ケース部７と、樹脂部であるシール部８と、を有する。第一ケース部６は、貯留空間２１を形成するために細長い椀状に形成されている。第二ケース部７は、貯留空間２１を形成するために細長い椀状に形成されている。シール部８は、第一ケース部６と第二ケース部７とを接続して、第一ケース部６と第二ケース部７との間をシールしている。つまり、金属ケース２では、第一ケース部６と第二ケース部７とがシール部８により接続及びシールされており、第一ケース部６と第二ケース部７との間に貯留空間２１が形成されている。 The metal case 2 has a first case portion 6 that is a metal portion, a second case portion 7 that is a metal portion, and a seal portion 8 that is a resin portion. The first case portion 6 is formed in an elongated bowl shape to form the storage space 21 . The second case portion 7 is formed in an elongated bowl shape to form the storage space 21 . The seal portion 8 connects the first case portion 6 and the second case portion 7 to seal the space between the first case portion 6 and the second case portion 7 . That is, in the metal case 2, the first case portion 6 and the second case portion 7 are connected and sealed by the seal portion 8, and the storage space 21 is formed between the first case portion 6 and the second case portion 7. formed.
　具体的に説明すると、第一ケース部６の周縁部６１は、第二ケース部７の周縁部７１に重ね合わされている。第一ケース部６と第二ケース部７との重ね合わせ部分２５では、第一ケース部６の周縁部６１が第二ケース部７の周縁部７１の外側（貯留空間２１とは反対側）に配置されている。そして、シール部８は、第一ケース部６と第二ケース部７との重ね合わせ部分２５を覆うように、第一ケース部６及び第二ケース部７に接合されている。重ね合わせ部分２５は、第一ケース部６と第二ケース部７とが重ね合わされている第一ケース部６の周縁部６１及び第二ケース部７の周縁部７１である。そして、第一ケース部６と第二ケース部７とは、第一ケース部６と第二ケース部７との重ね合わせ部分２５において、シール部８により接続されている。このため、第一ケース部６と第二ケース部７との重ね合わせ部分２５は、第一ケース部６と第二ケース部７とが接続される第一ケース部６と第二ケース部７との接続部分でもある。 Specifically, the peripheral edge portion 61 of the first case portion 6 overlaps the peripheral edge portion 71 of the second case portion 7 . At the overlapping portion 25 of the first case portion 6 and the second case portion 7, the peripheral edge portion 61 of the first case portion 6 is outside the peripheral edge portion 71 of the second case portion 7 (on the side opposite to the storage space 21). are placed. The seal portion 8 is joined to the first case portion 6 and the second case portion 7 so as to cover the overlapping portion 25 of the first case portion 6 and the second case portion 7 . The overlapped portion 25 is a peripheral edge portion 61 of the first case portion 6 and a peripheral edge portion 71 of the second case portion 7 where the first case portion 6 and the second case portion 7 are overlapped. The first case portion 6 and the second case portion 7 are connected by a seal portion 8 at an overlapping portion 25 between the first case portion 6 and the second case portion 7 . Therefore, the overlapping portion 25 of the first case portion 6 and the second case portion 7 is the first case portion 6 and the second case portion 7 where the first case portion 6 and the second case portion 7 are connected. It is also the connecting part of
　なお、第一ケース部６と第二ケース部７とは、重ね合わせ部分２５の全域において当接されていてもよく、重ね合わせ部分２５の一部においてのみ当接されていていてもよく、重ね合わせ部分２５の全域において離間していてもよい。本実施形態では、一例として、第一ケース部６と第二ケース部７とが重ね合わせ部分２５の全域において当接されている。また、シール部８は、金属ケース２の外表面側（貯留空間２１の反対側）にのみ形成されていてもよく、金属ケース２の内表面側（貯留空間２１側）にのみ形成されていてもよく、その双方に形成されていてもよい。本実施形態では、製造容易性の観点から、一例として、シール部８は、金属ケース２の外表面側にのみ形成されている。 The first case portion 6 and the second case portion 7 may be in contact with each other over the entire overlapping portion 25, or may be in contact with only a part of the overlapping portion 25. The entire area of the mating portion 25 may be spaced apart. In this embodiment, as an example, the first case portion 6 and the second case portion 7 are in contact with each other over the entire overlapping portion 25 . Moreover, the seal portion 8 may be formed only on the outer surface side of the metal case 2 (the side opposite to the storage space 21), or may be formed only on the inner surface side of the metal case 2 (the storage space 21 side). may be formed on both sides. In the present embodiment, as an example, the seal portion 8 is formed only on the outer surface side of the metal case 2 from the viewpoint of ease of manufacture.
　第一ケース部６及び第二ケース部７の肉厚は、特に限定されるものではない。燃料の脈動抑制効果を高める観点から、第一ケース部６及び第二ケース部７の肉厚は、例えば、３．０ｍｍ以下であることが好ましく、２．０ｍｍ以下であることがより好ましく、１．６ｍｍ以下であることが更に好ましい。つまり、金属ケース２の肉厚がこれら範囲内にあることで、金属ケース２が燃料の脈動に追従するように変形しやすくなって、燃料の脈動抑制効果が高まる。また、第一ケース部６及び第二ケース部７の剛性を十分に確保する観点から、第一ケース部６及び第二ケース部７の肉厚は、例えば、０．５ｍｍ以上であることが好ましく、０．７ｍｍ以上であることがより好ましく、１．０ｍｍ以上であることが更に好ましい。また、これらの観点から、第一ケース部６及び第二ケース部７の肉厚は、例えば、０．５ｍｍ以上３．０ｍｍ以下であることが好ましく、０．７ｍｍ以上２．０ｍｍ以下であることがより好ましく、１．０ｍｍ以上１．６ｍｍ以下であることが更に好ましい。なお、これらの肉厚は、例えば、第一ケース部６及び第二ケース部７の最も薄い部分の肉厚である。 The thicknesses of the first case portion 6 and the second case portion 7 are not particularly limited. From the viewpoint of enhancing the effect of suppressing fuel pulsation, the thickness of the first case portion 6 and the second case portion 7 is preferably, for example, 3.0 mm or less, more preferably 2.0 mm or less. It is more preferably 0.6 mm or less. That is, when the thickness of the metal case 2 is within these ranges, the metal case 2 is easily deformed so as to follow the pulsation of the fuel, and the effect of suppressing the pulsation of the fuel is enhanced. In addition, from the viewpoint of ensuring sufficient rigidity of the first case portion 6 and the second case portion 7, the thickness of the first case portion 6 and the second case portion 7 is preferably 0.5 mm or more, for example. , more preferably 0.7 mm or more, and even more preferably 1.0 mm or more. From these points of view, the thickness of the first case portion 6 and the second case portion 7 is preferably, for example, 0.5 mm or more and 3.0 mm or less, and is 0.7 mm or more and 2.0 mm or less. is more preferable, and 1.0 mm or more and 1.6 mm or less is even more preferable. These thicknesses are, for example, the thicknesses of the thinnest portions of the first case portion 6 and the second case portion 7 .
　第一ケース部６には、貯留空間２１に連通されたインレット用開口２６が形成されている。インレット用開口２６は、インレット３に接続される開口であり、第一ケース部６を貫通している。第二ケース部７には、貯留空間２１に連通された複数のインジェクターカップ用開口２７が形成されている。インジェクターカップ用開口２７は、インジェクターカップ４に接続される開口であり、第二ケース部７を貫通している。このため、インジェクターカップ用開口２７の数は、インジェクターカップ４の数と同じである。 An inlet opening 26 communicating with the storage space 21 is formed in the first case portion 6 . The inlet opening 26 is an opening connected to the inlet 3 and passes through the first case portion 6 . A plurality of injector cup openings 27 communicating with the storage space 21 are formed in the second case portion 7 . The injector cup opening 27 is an opening connected to the injector cup 4 and passes through the second case portion 7 . Therefore, the number of injector cup openings 27 is the same as the number of injector cups 4 .
　図７は、図４のインレットの近傍を拡大した断面図である。図１，２，４，７に示すように、インレット３は、燃料配管に接続されて、燃料配管から供給された燃料を貯留空間２１に供給するための部分である。インレット３は、インレット用開口２６に隣接する第一ケース部６の一部を覆うように第一ケース部６に接合された開口接続部である。インレット３は、燃料配管に接続されるため、略円筒状に延びている。インレット３には、インレット用開口２６に連通される流路３１が形成されている。流路３１は、燃料配管から供給された燃料を貯留空間２１に供給するための流路である。 FIG. 7 is a cross-sectional view enlarging the vicinity of the inlet in FIG. As shown in FIGS. 1, 2, 4, and 7, the inlet 3 is a portion that is connected to a fuel pipe to supply fuel supplied from the fuel pipe to the storage space 21. As shown in FIG. The inlet 3 is an opening connecting portion joined to the first case portion 6 so as to cover a portion of the first case portion 6 adjacent to the inlet opening 26 . Since the inlet 3 is connected to the fuel pipe, it extends in a substantially cylindrical shape. A channel 31 communicating with the inlet opening 26 is formed in the inlet 3 . The channel 31 is a channel for supplying the fuel supplied from the fuel pipe to the storage space 21 .
　具体的に説明すると、インレット３は、インレット用開口２６に隣接する第一ケース部６の外表面６２の一部及びインレット用開口２６に隣接する第一ケース部６の内表面６３の一部を覆うように、第一ケース部６に接合されている。つまり、インレット３は、インレット用開口２６の周囲において、第一ケース部６を外表面６２側と内表面６３側とから挟み込むように、第一ケース部６に接合されている。インレット３は、第一ケース部６の外表面６２の一部を覆う外表面部３２と、第一ケース部６の内表面６３の一部を覆う内表面部３３と、インレット用開口２６を介して外表面部３２と内表面部３３とに接続される接続部３４と、を有する。接続部３４は、流路３１を塞がないように、インレット用開口２６内において円筒状に形成されている。 Specifically, the inlet 3 has a portion of the outer surface 62 of the first case portion 6 adjacent to the inlet opening 26 and a portion of the inner surface 63 of the first case portion 6 adjacent to the inlet opening 26. It is joined to the first case part 6 so as to cover it. That is, the inlet 3 is joined to the first case portion 6 around the inlet opening 26 so as to sandwich the first case portion 6 from the outer surface 62 side and the inner surface 63 side. The inlet 3 has an outer surface portion 32 that partially covers the outer surface 62 of the first case portion 6 , an inner surface portion 33 that partially covers the inner surface 63 of the first case portion 6 , and the inlet opening 26 . and a connection portion 34 connected to the outer surface portion 32 and the inner surface portion 33 . The connecting portion 34 is formed in a cylindrical shape within the inlet opening 26 so as not to block the flow path 31 .
　図８は、図４のインジェクターカップの近傍を拡大した断面図である。図１，３，４，８に示すように、複数のインジェクターカップ４のそれぞれは、インジェクタを保持するための部分である。なお、複数のインジェクターカップ４は、基本的に互いに同じ形状であるため、代表して一つのインジェクターカップ４についてのみ説明する。インジェクターカップ４は、インジェクターカップ用開口２７に隣接する第二ケース部７の一部を覆うように第二ケース部７に接合された開口接続部である。インジェクターカップ４は、インジェクタを保持するため、略カップ状に形成されている。インジェクターカップ４には、インジェクターカップ用開口２７に連通される流路４１が形成されている。流路４１は、貯留空間２１から燃料をインジェクタに供給するための流路である。 FIG. 8 is an enlarged cross-sectional view of the vicinity of the injector cup in FIG. As shown in FIGS. 1, 3, 4 and 8, each of the plurality of injector cups 4 is a portion for holding an injector. Since the plurality of injector cups 4 are basically of the same shape, only one injector cup 4 will be described as a representative. The injector cup 4 is an opening connecting portion joined to the second case portion 7 so as to cover a portion of the second case portion 7 adjacent to the injector cup opening 27 . The injector cup 4 is generally cup-shaped to hold the injector. The injector cup 4 is formed with a channel 41 communicating with the injector cup opening 27 . The flow path 41 is a flow path for supplying fuel from the storage space 21 to the injector.
　具体的に説明すると、インジェクターカップ４は、インジェクターカップ用開口２７に隣接する第二ケース部７の外表面７２の一部及びインジェクターカップ用開口２７に隣接する第二ケース部７の内表面７３の一部を覆うように、第二ケース部７に接合されている。つまり、インジェクターカップ４は、インジェクターカップ用開口２７の周囲において、第二ケース部７を外表面７２側と内表面７３側とから挟み込むように、第二ケース部７に接合されている。インジェクターカップ４は、第二ケース部７の外表面７２の一部を覆う外表面部４２と、第二ケース部７の内表面７３の一部を覆う内表面部４３と、インジェクターカップ用開口２７を介して外表面部４２と内表面部４３とに接続される接続部４４と、を有する。接続部４４は、流路４１を塞がないように、インジェクターカップ用開口２７内において円筒状に形成されている。 Specifically, the injector cup 4 includes a portion of the outer surface 72 of the second case portion 7 adjacent to the injector cup opening 27 and an inner surface 73 of the second case portion 7 adjacent to the injector cup opening 27. It is joined to the second case part 7 so as to partially cover it. That is, the injector cup 4 is joined to the second case portion 7 around the injector cup opening 27 so as to sandwich the second case portion 7 from the outer surface 72 side and the inner surface 73 side. The injector cup 4 includes an outer surface portion 42 that partially covers the outer surface 72 of the second case portion 7, an inner surface portion 43 that partially covers the inner surface 73 of the second case portion 7, and an injector cup opening 27. and a connecting portion 44 connected to the outer surface portion 42 and the inner surface portion 43 via the . The connecting portion 44 is formed in a cylindrical shape within the injector cup opening 27 so as not to block the flow path 41 .
　図１～４，６に示すように、複数のブラケット５は、燃料分配管１を車両のシリンダヘッドやインテークマニホールド（何れも不図示）等に固定するための部分である。なお、複数のブラケット５は、基本的に互いに同じ形状であるため、代表して一つのブラケット５についてのみ説明する。ブラケット５は、第二ケース部７の外表面の一部を覆うように第二ケース部７に接合されている。ブラケット５は、エンジンブロック等に固定されるために細長い板状に形成さている。そして、ブラケット５の一方端部が、第二ケース部７に接合されており、ブラケット５の他方端部に、ボルト等の固定部材を挿入するための穴が形成されている。 　As shown in Figures 1 to 4 and 6, a plurality of brackets 5 are parts for fixing the fuel distribution pipe 1 to a vehicle cylinder head, an intake manifold (none of which are shown), or the like. Since the plurality of brackets 5 have basically the same shape, only one bracket 5 will be described as a representative. The bracket 5 is joined to the second case portion 7 so as to cover part of the outer surface of the second case portion 7 . The bracket 5 is formed in an elongated plate shape to be fixed to an engine block or the like. One end of the bracket 5 is joined to the second case portion 7, and the other end of the bracket 5 is formed with a hole for inserting a fixing member such as a bolt.
　第一ケース部６及び第二ケース部７の材質は、特に限定されるものではなく、例えば、鉄（炭素鋼）、ステンレス、アルミ等である。ステンレス及びアルミは、鉄に比べて、樹脂との熱膨張差が小さい。このため、熱膨張に伴う第一ケース部６及び第二ケース部７と樹脂部との間の接合強度の低下を抑制する観点から第一ケース部６及び第二ケース部７の材質は、鉄よりもステンレス又はアルミとすることが好ましい。また、第一ケース部６及び第二ケース部７は、耐食性等の観点から、めっきが施されていてもよい。特に、第一ケース部６及び第二ケース部７の材質が鉄である場合は、めっきを施すことが好ましい。 The material of the first case portion 6 and the second case portion 7 is not particularly limited, and is, for example, iron (carbon steel), stainless steel, aluminum, or the like. Stainless steel and aluminum have a smaller difference in thermal expansion with resin than iron. For this reason, from the viewpoint of suppressing a decrease in bonding strength between the first case portion 6 and the second case portion 7 and the resin portion due to thermal expansion, the material of the first case portion 6 and the second case portion 7 is iron. It is more preferable to use stainless steel or aluminum. Moreover, the first case portion 6 and the second case portion 7 may be plated from the viewpoint of corrosion resistance and the like. In particular, when the material of the first case portion 6 and the second case portion 7 is iron, it is preferable to apply plating.
　樹脂部であるシール部８、インレット３、インジェクターカップ４、及びブラケット５の材質は、特に限定されるものではなく、例えば、ガラス繊維が３５％配合されたポリアミド６６（ＰＡ６６－ＧＦ３５）等である。シール部８、インレット３、インジェクターカップ４、及びブラケット５の材質は、同じであってもよく、異なっていてもよい。 The materials of the sealing portion 8, the inlet 3, the injector cup 4, and the bracket 5, which are resin portions, are not particularly limited, and examples thereof include polyamide 66 (PA66-GF35) containing 35% glass fiber. . The materials of the seal portion 8, the inlet 3, the injector cup 4, and the bracket 5 may be the same or different.
　ここで、燃料分配管１の製造方法の一例について説明する。まず、プレス成型等により第一ケース部６及び第二ケース部７を製造する。次に、インサート成形等により、第一ケース部６に対して樹脂を射出成型することで、第一ケース部６に接合されたインレット３を成型する。これにより、第一ケース部６にインレット３が接合された第一中間部品が製造される。また、インサート成形等により、第二ケース部７に対して樹脂を射出成型することで、第二ケース部７に接合された複数のインジェクターカップ４及び複数のブラケット５を成型する。これにより、第二ケース部７に複数のインジェクターカップ４及び複数のブラケット５が接合された第二中間部品が製造される。その後、第一中間部品の第一ケース部６の周縁部６１Ａと第二中間部品の第二ケース部７の周縁部７１Ａとを重ね合わせる。そして、インサート成形等により、第一ケース部６と第二ケース部７との重ね合わせ部分２５に対して樹脂を射出成型することで、第一ケース部６及び第二ケース部７に接合されたシール部８を成型するとともに、シール部８により第一ケース部６と第二ケース部７とを接続するとともに第一ケース部６と第二ケース部７との間をシールする。これにより、燃料分配管１が製造される。 Here, an example of a method for manufacturing the fuel distribution pipe 1 will be described. First, the first case portion 6 and the second case portion 7 are manufactured by press molding or the like. Next, the inlet 3 joined to the first case portion 6 is molded by injection-molding a resin to the first case portion 6 by insert molding or the like. As a result, the first intermediate component in which the inlet 3 is joined to the first case portion 6 is manufactured. Further, by injection-molding resin to the second case portion 7 by insert molding or the like, the plurality of injector cups 4 and the plurality of brackets 5 joined to the second case portion 7 are molded. As a result, a second intermediate component is manufactured in which the plurality of injector cups 4 and the plurality of brackets 5 are joined to the second case portion 7 . After that, the peripheral edge portion 61A of the first case portion 6 of the first intermediate component and the peripheral edge portion 71A of the second case portion 7 of the second intermediate component are overlapped. Then, by insert molding or the like, resin is injected into the overlapped portion 25 of the first case portion 6 and the second case portion 7, thereby joining the first case portion 6 and the second case portion 7. The seal portion 8 is molded, and the seal portion 8 connects the first case portion 6 and the second case portion 7 and seals between the first case portion 6 and the second case portion 7 . Thus, the fuel distribution pipe 1 is manufactured.
　このように、本実施形態の燃料分配管１では、金属部に接合された樹脂部を備えるため、全ての部材がろう付けされる金属製の燃料分配管に比べて、製造時の二酸化炭素の発生を抑制することができる。また、樹脂部は、金属部の一部を覆うように金属部に接合されているため、射出成型等により、樹脂部と金属部とを強固に接合することができる。そして、金属部が燃料を貯留する貯留空間２１を形成するため、燃料の脈動に追従するように金属部が変形することで、燃料の脈動を抑制することができる。これにより、製造時の二酸化炭素の発生を抑制することができるとともに燃料の脈動を抑制することができる。 As described above, the fuel distribution pipe 1 of the present embodiment includes a resin portion joined to a metal portion. The occurrence can be suppressed. Moreover, since the resin part is joined to the metal part so as to partially cover the metal part, the resin part and the metal part can be firmly joined by injection molding or the like. Since the metal portion forms the storage space 21 in which the fuel is stored, the metal portion deforms so as to follow the pulsation of the fuel, thereby suppressing the pulsation of the fuel. As a result, it is possible to suppress the generation of carbon dioxide during manufacturing and suppress the pulsation of the fuel.
　また、この燃料分配管１では、金属部である第一ケース部６及び第二ケース部７を有し、第一ケース部６と第二ケース部７とは、樹脂部であるシール部８により接続及びシールされている。このため、貯留空間２１の気密性を確保することができるとともに、燃料分配管１を容易に製造することができる。また、シール部８は、第一ケース部６と第二ケース部７との接続部分を覆うように第一ケース部６及び第二ケース部７に接合されているため、第一ケース部６と第二ケース部７とを強固に接合することができるとともに、第一ケース部６及び第二ケース部７とシール部８、インレット３、インジェクターカップ４、及びブラケット５とを強固に接合することができる。 Further, the fuel distribution pipe 1 has a first case portion 6 and a second case portion 7 which are metal portions, and the first case portion 6 and the second case portion 7 are separated by a seal portion 8 which is a resin portion. Connected and sealed. Therefore, the airtightness of the storage space 21 can be ensured, and the fuel distribution pipe 1 can be easily manufactured. In addition, since the seal portion 8 is joined to the first case portion 6 and the second case portion 7 so as to cover the connection portion between the first case portion 6 and the second case portion 7, the first case portion 6 and the second case portion 7 The second case portion 7 can be firmly joined, and the first case portion 6 and the second case portion 7 can be firmly joined to the seal portion 8, the inlet 3, the injector cup 4, and the bracket 5. can.
　また、燃料分配管１では、第一ケース部６の少なくとも一部と第二ケース部７の少なくとも一部とが重ね合わされており、シール部８が、第一ケース部６と第二ケース部７との重ね合わせ部分２５を覆うように第一ケース部６及び第二ケース部７に接合されている。このため、第一ケース部６と第二ケース部７との接続を容易に行うことができる。 Further, in the fuel distribution pipe 1, at least a portion of the first case portion 6 and at least a portion of the second case portion 7 are overlapped, and the seal portion 8 is formed between the first case portion 6 and the second case portion 7. It is joined to the first case portion 6 and the second case portion 7 so as to cover the overlapped portion 25 with. Therefore, the first case portion 6 and the second case portion 7 can be easily connected.
　また、この燃料分配管１では、開口接続部であるインレット３が、インレット用開口２６に隣接する第一ケース部６の一部を覆うように第一ケース部６に接合されている。また、開口接続部であるインジェクターカップ４が、インジェクターカップ用開口２７に隣接する第二ケース部７の一部を覆うように第二ケース部７に接合されている。このため、第一ケース部６及び第二ケース部７とインレット３及びインジェクターカップ４とを強固に接合することができる。 In addition, in the fuel distribution pipe 1, the inlet 3, which is an opening connecting portion, is joined to the first case portion 6 so as to cover a portion of the first case portion 6 adjacent to the inlet opening 26. In addition, the injector cup 4 which is an opening connecting portion is joined to the second case portion 7 so as to cover a portion of the second case portion 7 adjacent to the injector cup opening 27 . Therefore, the first case portion 6 and the second case portion 7, the inlet 3 and the injector cup 4 can be firmly joined.
　また、この燃料分配管１では、開口接続部であるインレット３が、インレット用開口２６に隣接する第一ケース部６の外表面６２の一部及びインレット用開口２６に隣接する第一ケース部６の内表面６３の一部を覆うように第一ケース部６に接合されている。つまり、インレット３は、第一ケース部６を挟み込むように第一ケース部６に接合されている。また、開口接続部であるインジェクターカップ４が、インジェクターカップ用開口２７に隣接する第二ケース部７の外表面７２の一部及びインジェクターカップ用開口２７に隣接する第二ケース部７の内表面７３の一部を覆うように第二ケース部７に接合されている。つまり、インジェクターカップ４は、第二ケース部７を挟み込むように第二ケース部７に接合されている。このため、第一ケース部６及び第二ケース部７とインレット３及びインジェクターカップ４とを強固に接合することができる。 Further, in the fuel distribution pipe 1, the inlet 3, which is an opening connecting portion, is part of the outer surface 62 of the first case portion 6 adjacent to the inlet opening 26 and the first case portion 6 adjacent to the inlet opening 26. is joined to the first case part 6 so as to cover a part of the inner surface 63 of the. That is, the inlet 3 is joined to the first case portion 6 so as to sandwich the first case portion 6 therebetween. In addition, the injector cup 4, which is the opening connecting portion, is part of the outer surface 72 of the second case portion 7 adjacent to the injector cup opening 27 and the inner surface 73 of the second case portion 7 adjacent to the injector cup opening 27. is joined to the second case part 7 so as to cover a part of the That is, the injector cup 4 is joined to the second case portion 7 so as to sandwich the second case portion 7 therebetween. Therefore, the first case portion 6 and the second case portion 7, the inlet 3 and the injector cup 4 can be firmly joined.
　また、この燃料分配管１では、樹脂部であるインレット３が、インレット用開口２６に隣接する第一ケース部６の一部を覆うように第一ケース部６に接合されている。このため、第一ケース部６とインレット３とを接合する際の二酸化炭素の発生を抑制して、第一ケース部６とインレット３とを強固に接合することができる。 Further, in this fuel distribution pipe 1, the inlet 3, which is a resin portion, is joined to the first case portion 6 so as to cover a portion of the first case portion 6 adjacent to the inlet opening 26. Therefore, the first case portion 6 and the inlet 3 can be firmly joined by suppressing the generation of carbon dioxide when the first case portion 6 and the inlet 3 are joined.
　また、この燃料分配管１では、樹脂部であるインジェクターカップ４が、インジェクターカップ用開口２７に隣接する第二ケース部７の一部を覆うように第二ケース部７に接合されている。このため、第二ケース部７とインジェクターカップ４とを接合する際の二酸化炭素の発生を抑制して、第二ケース部７とインジェクターカップ４とを強固に接合することができる。 Further, in the fuel distribution pipe 1, the injector cup 4, which is a resin portion, is joined to the second case portion 7 so as to cover a portion of the second case portion 7 adjacent to the injector cup opening 27. Therefore, the generation of carbon dioxide when the second case portion 7 and the injector cup 4 are joined together can be suppressed, and the second case portion 7 and the injector cup 4 can be firmly joined together.
　また、この燃料分配管１では、樹脂部であるブラケット５が、金属部である第二ケース部７の外表面７２の一部を覆うように第二ケース部７に接合されている。このため、第二ケース部７とブラケット５とを接合する際の二酸化炭素の発生を抑制して、第二ケース部７とブラケット５とを強固に接合することができる。 In addition, in this fuel distribution pipe 1, the bracket 5, which is a resin portion, is joined to the second case portion 7 so as to partially cover the outer surface 72 of the second case portion 7, which is a metal portion. Therefore, the generation of carbon dioxide when the second case portion 7 and the bracket 5 are joined together can be suppressed, and the second case portion 7 and the bracket 5 can be firmly joined together.
　また、この燃料分配管１では、第一ケース部６及び第二ケース部７にめっきが施されているため、耐食性を向上することができる。このため、例えば、第一ケース部６及び第二ケース部７を、安価な鉄製とすることができる。 Also, in this fuel distribution pipe 1, since the first case portion 6 and the second case portion 7 are plated, corrosion resistance can be improved. Therefore, for example, the first case portion 6 and the second case portion 7 can be made of inexpensive iron.
［第二実施形態］
　次に、第二実施形態について説明する。第二実施形態は、基本的に第一実施形態と同様であり、第一ケース部、第二ケース部、及びシール部の形状が異なる点のみ、第一実施形態と相違する。このため、以下の説明では、第一実施形態と相違する事項のみを説明し、第一実施形態と同様の説明を省略する。 [Second embodiment]
Next, a second embodiment will be described. The second embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
　図９は、第二実施形態の燃料分配管の、図５に対応する断面図である。図９に示すように、第二実施形態の燃料分配管１Ａは、第一実施形態の金属ケース２に対応する金属ケース２Ａを備える。金属ケース２Ａは、第一実施形態の第一ケース部６に対応する第一ケース部６Ａと、第一実施形態の第二ケース部７に対応する第二ケース部７Ａと、第一実施形態のシール部８に対応するシール部８Ａと、を有する。 FIG. 9 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the second embodiment. As shown in FIG. 9, the fuel distribution pipe 1A of the second embodiment includes a metal case 2A corresponding to the metal case 2 of the first embodiment. The metal case 2A includes a first case portion 6A corresponding to the first case portion 6 of the first embodiment, a second case portion 7A corresponding to the second case portion 7 of the first embodiment, and a and a seal portion 8A corresponding to the seal portion 8.
　第一ケース部６Ａの周縁部６１Ａは、第二ケース部７Ａの周縁部７１Ａに重ね合わされている。第一ケース部６Ａと第二ケース部７Ａとの重ね合わせ部分２５Ａでは、第一ケース部６Ａの周縁部６１Ａが第二ケース部７Ａの周縁部７１Ａの外側に配置されている。第一ケース部６Ａと第二ケース部７Ａとの重ね合わせ部分２５Ａにおいて、第一ケース部６Ａの周縁部６１Ａは、第二ケース部７Ａの周縁部７１Ａから離れる方向に延びている。また、第一ケース部６Ａと第二ケース部７Ａとの重ね合わせ部分２５Ａにおいて、第二ケース部７Ａの周縁部７１Ａは、第一ケース部６Ａの周縁部６１Ａから離れる方向に延びている。このため、重ね合わせ部分２５Ａにおける第一ケース部６Ａと第二ケース部７Ａとの間に間隙２２Ａが形成されている。 The peripheral edge portion 61A of the first case portion 6A overlaps the peripheral edge portion 71A of the second case portion 7A. In the overlapping portion 25A between the first case portion 6A and the second case portion 7A, the peripheral edge portion 61A of the first case portion 6A is arranged outside the peripheral edge portion 71A of the second case portion 7A. At the overlapped portion 25A between the first case portion 6A and the second case portion 7A, the peripheral edge portion 61A of the first case portion 6A extends away from the peripheral edge portion 71A of the second case portion 7A. In addition, at the overlapping portion 25A between the first case portion 6A and the second case portion 7A, the peripheral edge portion 71A of the second case portion 7A extends in a direction away from the peripheral edge portion 61A of the first case portion 6A. Therefore, a gap 22A is formed between the first case portion 6A and the second case portion 7A at the overlapping portion 25A.
　シール部８Ａは、第一ケース部６Ａと第二ケース部７Ａとの重ね合わせ部分２５Ａを覆うようように、第一ケース部６Ａ及び第二ケース部７Ａに接合されている。また、シール部８Ａは、重ね合わせ部分２５Ａにおける第一ケース部６Ａと第二ケース部７Ａとの間に形成された間隙２２Ａに充填されている。 The seal portion 8A is joined to the first case portion 6A and the second case portion 7A so as to cover the overlapping portion 25A of the first case portion 6A and the second case portion 7A. Further, the seal portion 8A is filled in the gap 22A formed between the first case portion 6A and the second case portion 7A in the overlapping portion 25A.
　このように、本実施形態の燃料分配管１Ａでは、重ね合わせ部分２５Ａにおいて、第一ケース部６Ａの周縁部６１Ａが第二ケース部７Ａから離れる方向に延びている。このため、第一ケース部６Ａがシール部８Ａに引っ掛かることで、第一ケース部６Ａと第二ケース部７Ａとの重ね合わせ方向Ｄ１と直交する方向への、シール部８Ａに対する第一ケース部６Ａの抜けを抑制することができる。 Thus, in the fuel distribution pipe 1A of the present embodiment, the peripheral edge portion 61A of the first case portion 6A extends away from the second case portion 7A at the overlapping portion 25A. For this reason, the first case portion 6A is caught by the seal portion 8A, so that the first case portion 6A with respect to the seal portion 8A in the direction perpendicular to the overlapping direction D1 of the first case portion 6A and the second case portion 7A. omission can be suppressed.
　また、この燃料分配管１Ａでは、重ね合わせ部分２５Ａにおける第一ケース部６Ａと第二ケース部７Ａとの間に形成された間隙２２Ａにシール部８Ａが充填されている。これにより、第一ケース部６Ａ及び第二ケース部７Ａとシール部８Ａとの接触面積が増大するため、第一ケース部６Ａ及び第二ケース部７Ａとシール部８Ａとを更に強固に接合することができる。 Also, in this fuel distribution pipe 1A, a gap 22A formed between the first case portion 6A and the second case portion 7A in the overlapping portion 25A is filled with the seal portion 8A. As a result, the contact area between the first case portion 6A and the second case portion 7A and the seal portion 8A increases, so that the first case portion 6A and the second case portion 7A and the seal portion 8A can be joined more firmly. can be done.
［第三実施形態］
　次に、第三実施形態について説明する。第三実施形態は、基本的に第一実施形態と同様であり、第一ケース部、第二ケース部、及びシール部の形状が異なる点のみ、第一実施形態と相違する。このため、以下の説明では、第一実施形態と相違する事項のみを説明し、第一実施形態と同様の説明を省略する。 [Third embodiment]
Next, a third embodiment will be described. The third embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
　図１０は、第三実施形態の燃料分配管の、図５に対応する断面図である。図１０に示すように、第三実施形態の燃料分配管１Ｂは、第一実施形態の金属ケース２に対応する金属ケース２Ｂを備える。金属ケース２Ｂは、第一実施形態の第一ケース部６に対応する第一ケース部６Ｂと、第一実施形態の第二ケース部７に対応する第二ケース部７Ｂと、第一実施形態のシール部８に対応するシール部８Ｂと、を有する。 FIG. 10 is a cross-sectional view corresponding to FIG. 5 of the fuel distribution pipe of the third embodiment. As shown in FIG. 10, the fuel distribution pipe 1B of the third embodiment has a metal case 2B corresponding to the metal case 2 of the first embodiment. The metal case 2B includes a first case portion 6B corresponding to the first case portion 6 of the first embodiment, a second case portion 7B corresponding to the second case portion 7 of the first embodiment, and a and a seal portion 8</b>B corresponding to the seal portion 8 .
　第一ケース部６Ｂの周縁部６１Ｂは、第二ケース部７Ｂの周縁部７１Ｂに重ね合わされている。第一ケース部６Ｂと第二ケース部７Ｂとの重ね合わせ部分２５Ｂでは、第一ケース部６Ｂの周縁部６１Ｂが第二ケース部７Ｂの周縁部７１Ｂの外側に配置されている。第一ケース部６Ｂと第二ケース部７Ｂとの重ね合わせ部分２５Ｂにおいて、第一ケース部６Ｂの周縁部６１Ｂは、第二ケース部７Ｂの周縁部７１Ｂから離れる方向に屈曲している。このため、重ね合わせ部分２５Ｂにおける第一ケース部６Ｂと第二ケース部７Ｂとの間に間隙２２Ｂが形成されている。 The peripheral edge portion 61B of the first case portion 6B overlaps the peripheral edge portion 71B of the second case portion 7B. At the overlapping portion 25B between the first case portion 6B and the second case portion 7B, the peripheral edge portion 61B of the first case portion 6B is arranged outside the peripheral edge portion 71B of the second case portion 7B. At the overlapping portion 25B between the first case portion 6B and the second case portion 7B, the peripheral edge portion 61B of the first case portion 6B is bent in a direction away from the peripheral edge portion 71B of the second case portion 7B. Therefore, a gap 22B is formed between the first case portion 6B and the second case portion 7B at the overlapping portion 25B.
　シール部８Ｂは、第一ケース部６Ｂと第二ケース部７Ｂとの重ね合わせ部分２５Ｂを覆うようように、第一ケース部６Ｂ及び第二ケース部７Ｂに接合されている。また、シール部８Ｂは、重ね合わせ部分２５Ｂにおける第一ケース部６Ｂと第二ケース部７Ｂとの間に形成された間隙２２Ｂに充填されている。 The seal portion 8B is joined to the first case portion 6B and the second case portion 7B so as to cover the overlapping portion 25B of the first case portion 6B and the second case portion 7B. Further, the seal portion 8B is filled in the gap 22B formed between the first case portion 6B and the second case portion 7B at the overlapping portion 25B.
　このように、本実施形態の燃料分配管１Ｂでは、重ね合わせ部分２５Ｂにおいて、第一ケース部６Ｂの周縁部６１Ｂが第二ケース部７Ｂから離れる方向に屈曲している。このため、第一ケース部６Ｂがシール部８Ｂに引っ掛かることで、第一ケース部６Ｂと第二ケース部７Ｂとの重ね合わせ方向Ｄ２と直交する方向への、シール部８Ｂに対する第一ケース部６Ｂの抜けを抑制することができる。 Thus, in the fuel distribution pipe 1B of the present embodiment, the peripheral edge portion 61B of the first case portion 6B is bent in the direction away from the second case portion 7B at the overlapping portion 25B. For this reason, the first case portion 6B is caught by the seal portion 8B, so that the first case portion 6B with respect to the seal portion 8B moves in a direction perpendicular to the overlapping direction D2 of the first case portion 6B and the second case portion 7B. omission can be suppressed.
　また、この燃料分配管１Ｂでは、重ね合わせ部分２５Ｂにおける第一ケース部６Ｂと第二ケース部７Ｂとの間に形成された間隙２２Ｂにシール部８Ｂが充填されている。これにより、第一ケース部６Ｂ及び第二ケース部７Ｂとシール部８Ｂとの接触面積が増大するため、第一ケース部６Ｂ及び第二ケース部７Ｂとシール部８Ｂとを更に強固に接合することができる。 Further, in the fuel distribution pipe 1B, the gap 22B formed between the first case portion 6B and the second case portion 7B in the overlapping portion 25B is filled with the seal portion 8B. As a result, the contact area between the first case portion 6B and the second case portion 7B and the seal portion 8B increases, so that the first case portion 6B and the second case portion 7B and the seal portion 8B can be joined more firmly. can be done.
［第四実施形態］
　次に、第四実施形態について説明する。第四実施形態は、基本的に第一実施形態と同様であり、金属ケースの形状が異なる点のみ、第一実施形態と相違する。このため、以下の説明では、第一実施形態と相違する事項のみを説明し、第一実施形態と同様の説明を省略する。 [Fourth embodiment]
Next, a fourth embodiment will be described. The fourth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shape of the metal case. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
　図１１は、第四実施形態の燃料分配管の、図７に対応する断面図である。図１２は、第四実施形態の燃料分配管の、図８に対応する断面図である。図１１及び図１２に示すように、第四実施形態の燃料分配管１Ｃは、第一実施形態の金属ケース２に対応する金属ケース２Ｃを備える。金属ケース２Ｃは、第一実施形態の第一ケース部６に対応する第一ケース部６Ｃと、第一実施形態の第二ケース部７に対応する第二ケース部７Ｃと、第一実施形態のシール部８と同様のシール部（不図示）と、を有する。 FIG. 11 is a sectional view corresponding to FIG. 7 of the fuel distribution pipe of the fourth embodiment. FIG. 12 is a cross-sectional view corresponding to FIG. 8 of the fuel distribution pipe of the fourth embodiment. As shown in FIGS. 11 and 12, the fuel distribution pipe 1C of the fourth embodiment includes a metal case 2C corresponding to the metal case 2 of the first embodiment. The metal case 2C includes a first case portion 6C corresponding to the first case portion 6 of the first embodiment, a second case portion 7C corresponding to the second case portion 7 of the first embodiment, and a a seal portion (not shown) similar to the seal portion 8;
　図１１に示すように、第一ケース部６Ｃは、第一ケース本体６４Ｃと、第一円筒部６５Ｃと、を有する。第一ケース本体６４Ｃは、第二ケース部７Ｃとともに貯留空間２１を形成する。第一円筒部６５Ｃは、インレット用開口２６Ｃを形成する。インレット用開口２６Ｃは、貯留空間２１に連通されて、インレット３に接続される開口である。第一円筒部６５Ｃは、第一ケース本体６４Ｃに対して屈曲している。第一ケース本体６４Ｃに対する第一円筒部６５Ｃの屈曲方向は、特に限定されるものではない。例えば、第一円筒部６５Ｃは、第一ケース本体６４Ｃに対して貯留空間２１の反対側（第一ケース本体６４Ｃの外表面６２Ｃ側）に屈曲していてもよく、第一ケース本体６４Ｃに対して貯留空間２１側（第一ケース本体６４Ｃの内表面６３Ｃ側）に屈曲していてもよい。本実施形態では、一例として、第一円筒部６５Ｃは、第一ケース本体６４Ｃに対して貯留空間２１の反対側に屈曲している。そして、インレット３は、第一ケース本体６４Ｃの一部及び第一円筒部６５Ｃを覆うように、第一ケース部６Ｃに接合されている。 As shown in FIG. 11, the first case portion 6C has a first case main body 64C and a first cylindrical portion 65C. The first case main body 64C forms the storage space 21 together with the second case portion 7C. The first cylindrical portion 65C forms the inlet opening 26C. The inlet opening 26</b>C is an opening that communicates with the storage space 21 and is connected to the inlet 3 . The first cylindrical portion 65C is bent with respect to the first case main body 64C. The bending direction of the first cylindrical portion 65C with respect to the first case main body 64C is not particularly limited. For example, the first cylindrical portion 65C may be bent toward the opposite side of the storage space 21 (toward the outer surface 62C of the first case body 64C) with respect to the first case body 64C. may be bent toward the storage space 21 side (the inner surface 63C side of the first case main body 64C). In this embodiment, as an example, the first cylindrical portion 65C is bent to the opposite side of the storage space 21 with respect to the first case main body 64C. The inlet 3 is joined to the first case portion 6C so as to cover a portion of the first case main body 64C and the first cylindrical portion 65C.
　図１２に示すように、第二ケース部７Ｃは、第二ケース本体７４Ｃと、第二円筒部７５Ｃと、を有する。第二ケース本体７４Ｃは、第一ケース部６Ｃとともに貯留空間２１を形成する。第二円筒部７５Ｃは、インジェクターカップ用開口２７Ｃを形成する。インジェクターカップ用開口２７Ｃは、貯留空間２１に連通されて、インジェクターカップ４に接続される開口である。第二円筒部７５Ｃは、第二ケース本体７４Ｃに対して屈曲している。第二ケース本体７４Ｃに対する第二円筒部７５Ｃの屈曲方向は、特に限定されるものではない。例えば、第二円筒部７５Ｃは、第二ケース本体７４Ｃに対して貯留空間２１の反対側（第二ケース本体７４Ｃの外表面７２Ｃ側）に屈曲していてもよく、第二ケース本体７４Ｃに対して貯留空間２１側（第二ケース本体７４Ｃの内表面７３Ｃ側）に屈曲していてもよい。本実施形態では、一例として、第二円筒部７５Ｃは、第二ケース本体７４Ｃに対して貯留空間２１の反対側に屈曲している。そして、インジェクターカップ４は、第二ケース本体７４Ｃの一部及び第二円筒部７５Ｃを覆うように、第二ケース部７Ｃに接合されている。 As shown in FIG. 12, the second case portion 7C has a second case main body 74C and a second cylindrical portion 75C. The second case main body 74C forms the storage space 21 together with the first case portion 6C. The second cylindrical portion 75C forms an injector cup opening 27C. The injector cup opening 27</b>C is an opening that communicates with the storage space 21 and is connected to the injector cup 4 . The second cylindrical portion 75C is bent with respect to the second case main body 74C. The bending direction of the second cylindrical portion 75C with respect to the second case main body 74C is not particularly limited. For example, the second cylindrical portion 75C may be bent on the opposite side of the storage space 21 (on the outer surface 72C side of the second case body 74C) with respect to the second case body 74C. may be bent toward the storage space 21 side (the inner surface 73C side of the second case main body 74C). In this embodiment, as an example, the second cylindrical portion 75C is bent to the opposite side of the storage space 21 with respect to the second case main body 74C. The injector cup 4 is joined to the second case portion 7C so as to cover a portion of the second case main body 74C and the second cylindrical portion 75C.
　このように、本実施形態の燃料分配管１Ｃでは、第一ケース部６Ｃが、第一ケース本体６４Ｃに対して屈曲する第一円筒部６５Ｃを有し、インレット３が、第一ケース本体６４Ｃの一部及び第一円筒部６５Ｃを覆うように第一ケース部６Ｃに接合されている。このため、第一ケース部６Ｃに対するインレット３の抜けを抑制することができる。また、第一ケース部６Ｃとインレット３との接触面積が増大するため、第一ケース部６Ｃとインレット３とを更に強固に接合することができる。同様に、第二ケース部７Ｃが、第二ケース本体７４Ｃに対して屈曲する第二円筒部７５Ｃを有し、インジェクターカップ４が、第二ケース本体７４Ｃの一部及び第二円筒部７５Ｃを覆うように第二ケース部７Ｃに接合されている。このため、第二ケース部７Ｃに対するインジェクターカップ４の抜けを抑制することができる。また、第二ケース部７Ｃとインジェクターカップ４との接触面積が増大するため、第二ケース部７Ｃとインジェクターカップ４とを更に強固に接合することができる。 Thus, in the fuel distribution pipe 1C of the present embodiment, the first case portion 6C has the first cylindrical portion 65C that bends with respect to the first case main body 64C, and the inlet 3 is located on the first case main body 64C. It is joined to the first case portion 6C so as to cover a part and the first cylindrical portion 65C. Therefore, it is possible to prevent the inlet 3 from coming off the first case portion 6C. Moreover, since the contact area between the first case portion 6C and the inlet 3 increases, the first case portion 6C and the inlet 3 can be joined more firmly. Similarly, the second case portion 7C has a second cylindrical portion 75C that bends with respect to the second case body 74C, and the injector cup 4 covers a portion of the second case body 74C and the second cylindrical portion 75C. It is joined to the second case portion 7C as follows. Therefore, it is possible to prevent the injector cup 4 from coming off the second case portion 7C. Moreover, since the contact area between the second case portion 7C and the injector cup 4 increases, the second case portion 7C and the injector cup 4 can be joined more firmly.
　ところで、燃料分配管１の製造時は、インレット３及びインジェクターカップ４の成形後の収縮により、インレット３及びインジェクターカップ４は第一ケース部６Ｃ及び第二ケース部７Ｃに押し付けられて第一ケース部６Ｃ及び第二ケース部７Ｃに密着する。この燃料分配管１Ｃでは、第一円筒部６５Ｃが第一ケース本体６４Ｃに対して屈曲しているため、インレット３の第一ケース部６Ｃに向かう収縮方向におけるインレット３の肉厚を積算した総肉厚を増加することができる。つまり、第一ケース部６Ｃに向かうインレット３の収縮量を増加することができる。このため、第一ケース部６Ｃに対するインレット３の密着性を更に向上することができる。同様に、第二円筒部７５Ｃが第二ケース本体７４Ｃに対して屈曲しているため、インジェクターカップ４の第二ケース部７Ｃに向かう収縮方向におけるインジェクターカップ４の肉厚を積算した総肉厚を増加することができる。つまり、第二ケース部７Ｃに向かうインジェクターカップ４の収縮量を増加することができる。このため、第二ケース部７Ｃに対するインジェクターカップ４の密着性を更に向上することができる。 By the way, when manufacturing the fuel distribution pipe 1, the inlet 3 and the injector cup 4 are pressed against the first case portion 6C and the second case portion 7C due to shrinkage after the molding of the inlet 3 and the injector cup 4. 6C and the second case portion 7C. In this fuel distribution pipe 1C, since the first cylindrical portion 65C is bent with respect to the first case main body 64C, the total thickness of the inlet 3 in the shrinking direction toward the first case portion 6C of the inlet 3 is integrated. Thickness can be increased. That is, the contraction amount of the inlet 3 toward the first case portion 6C can be increased. Therefore, it is possible to further improve the adhesion of the inlet 3 to the first case portion 6C. Similarly, since the second cylindrical portion 75C is bent with respect to the second case main body 74C, the total thickness of the injector cup 4 in the contraction direction toward the second case portion 7C of the injector cup 4 is can be increased. That is, the amount of contraction of the injector cup 4 toward the second case portion 7C can be increased. Therefore, it is possible to further improve the adhesion of the injector cup 4 to the second case portion 7C.
［第五実施形態］
　次に、第五実施形態について説明する。第五実施形態は、基本的に第一実施形態と同様であり、金属ケースの形状が異なる点のみ、第一実施形態と相違する。このため、以下の説明では、第一実施形態と相違する事項のみを説明し、第一実施形態と同様の説明を省略する。 [Fifth embodiment]
Next, a fifth embodiment will be described. The fifth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shape of the metal case. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
　図１３は、第五実施形態の燃料分配管を示す正面図である。図１４は、図１３に示すＸＩＶ－ＸＩＶ線における断面図である。図１３及び図１４に示すように、第五実施形態の燃料分配管１Ｄは、第一実施形態の金属ケース２に対応する金属ケース２Ｄを備える。 FIG. 13 is a front view showing the fuel distribution pipe of the fifth embodiment. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 13. FIG. As shown in FIGS. 13 and 14, the fuel distribution pipe 1D of the fifth embodiment has a metal case 2D corresponding to the metal case 2 of the first embodiment.
　金属ケース２Ｄは、燃料の脈動抑制効果を高める観点から、金属ケース２Ｄの延在方向（複数のインジェクターカップ４の配列方向）と直交する断面において、略Ｌ字状に形成されている。つまり、金属ケース２Ｄの内部に形成された貯留空間２１Ｄが、当該断面において略Ｌ字状に形成されている。金属ケース２Ｄは、第一実施形態の第一ケース部６に対応する第一ケース部６Ｄと、第一実施形態の第二ケース部７と同様の第二ケース部７Ｄと、第一実施形態のシール部８と同様のシール部８Ｄと、を有する。そして、第一ケース部６が、金属ケース２Ｄの延在方向と直交する断面において、略Ｌ字状に形成されている。 The metal case 2D is formed in a substantially L shape in a cross section perpendicular to the extending direction of the metal case 2D (arrangement direction of the plurality of injector cups 4) from the viewpoint of enhancing the effect of suppressing fuel pulsation. That is, the storage space 21D formed inside the metal case 2D is formed in a substantially L shape in the cross section. The metal case 2D includes a first case portion 6D corresponding to the first case portion 6 of the first embodiment, a second case portion 7D similar to the second case portion 7 of the first embodiment, and a A seal portion 8D similar to the seal portion 8 is provided. The first case portion 6 is formed in a substantially L shape in a cross section perpendicular to the extending direction of the metal case 2D.
　このように、金属ケース２の形状が第一実施形態と異なっていても、上記実施形態と同様の効果を奏することができる。 Thus, even if the shape of the metal case 2 is different from that of the first embodiment, the same effects as those of the above embodiment can be obtained.
［第六実施形態］
　次に、第六実施形態について説明する。第六実施形態は、基本的に第一実施形態と同様であり、金属ケース、インジェクターカップ、及びブラケットの形状が異なる点のみ、第一実施形態と相違する。このため、以下の説明では、第一実施形態と相違する事項のみを説明し、第一実施形態と同様の説明を省略する。 [Sixth embodiment]
Next, a sixth embodiment will be described. The sixth embodiment is basically the same as the first embodiment, and differs from the first embodiment only in the shapes of the metal case, the injector cup, and the bracket. Therefore, in the following description, only matters different from the first embodiment will be described, and the same description as in the first embodiment will be omitted.
　図１５は、第六実施形態の燃料分配管を示す正面図である。図１６は、第六実施形態の燃料分配管を示す底面図である。図１７は、図１５に示すＸＶＩＩ－ＸＶＩＩ線における断面図である。図１５～図１７に示すように、第六実施形態の燃料分配管１Ｅは、第一実施形態の金属ケース２に対応する金属ケース２Ｅと、第一実施形態と同様のインレット３と、樹脂部である一体形成部９Ｅと、を備える。 FIG. 15 is a front view showing the fuel distribution pipe of the sixth embodiment. FIG. 16 is a bottom view showing the fuel distribution pipe of the sixth embodiment. 17 is a cross-sectional view along line XVII-XVII shown in FIG. 15. FIG. As shown in FIGS. 15 to 17, the fuel distribution pipe 1E of the sixth embodiment includes a metal case 2E corresponding to the metal case 2 of the first embodiment, an inlet 3 similar to that of the first embodiment, a resin portion and an integrally formed portion 9E.
　金属ケース２Ｅは、第一実施形態の第一ケース部６に対応する第一ケース部６Ｅと、第一実施形態の第二ケース部７に対応する第二ケース部７Ｅと、第一実施形態のシール部８に対応するシール部８Ｅと、を有する。 The metal case 2E includes a first case portion 6E corresponding to the first case portion 6 of the first embodiment, a second case portion 7E corresponding to the second case portion 7 of the first embodiment, and a and a seal portion 8</b>E corresponding to the seal portion 8 .
　第一ケース部６Ｅには、貯留空間２１に連通されたインレット用開口（不図示）が形成されており、第二ケース部７Ｅには、貯留空間２１に連通された複数のインジェクターカップ用開口２７Ｅが形成されている。第一ケース部６Ｅは、貯留空間２１とは反対側に延びる第一フランジ部６６Ｅを有する。第一フランジ部６６Ｅは、第一ケース部６Ｅの周縁部を形成している。第二ケース部７Ｅは、貯留空間２１とは反対側に延びる第二フランジ部７６Ｅを有する。第二フランジ部７６Ｅは、第二ケース部７Ｅの周縁部を形成している。第二フランジ部７６Ｅは、第一フランジ部６６Ｅと重ね合わされている。つまり、第一ケース部６Ｅと第二ケース部７Ｅとは、第一フランジ部６６Ｅと第二フランジ部７６Ｅとにおいて、互いに重ね合わされている。 An inlet opening (not shown) communicating with the storage space 21 is formed in the first case portion 6E, and a plurality of injector cup openings 27E communicating with the storage space 21 are formed in the second case portion 7E. is formed. The first case portion 6E has a first flange portion 66E extending on the side opposite to the storage space 21 . The first flange portion 66E forms a peripheral portion of the first case portion 6E. The second case portion 7E has a second flange portion 76E extending on the side opposite to the storage space 21 . The second flange portion 76E forms a peripheral portion of the second case portion 7E. The second flange portion 76E overlaps the first flange portion 66E. That is, the first case portion 6E and the second case portion 7E are overlapped with each other at the first flange portion 66E and the second flange portion 76E.
　シール部８Ｅは、第一フランジ部６６Ｅの少なくとも一部及び第二フランジ部７６Ｅの少なくとも一部を覆うように、第一ケース部６Ｅ及び第二ケース部７Ｅに接合されている。本実施形態では、一例として、第一フランジ部６６Ｅ及び第二フランジ部７６Ｅの全体を覆うように、第一ケース部６Ｅ及び第二ケース部７Ｅに接合されている。 The seal portion 8E is joined to the first case portion 6E and the second case portion 7E so as to cover at least a portion of the first flange portion 66E and at least a portion of the second flange portion 76E. In this embodiment, as an example, it is joined to the first case portion 6E and the second case portion 7E so as to cover the entire first flange portion 66E and the second flange portion 76E.
　インレット３は、インレット用開口（不図示）に隣接する第一ケース部６Ｅの一部を覆うように第一ケース部６Ｅに接合されている。 The inlet 3 is joined to the first case portion 6E so as to cover a portion of the first case portion 6E adjacent to the inlet opening (not shown).
　一体形成部９Ｅは、第二ケース部７Ｅの一部を覆うように第二ケース部７Ｅに接合されている。一体形成部９Ｅは、第一実施形態の複数のインジェクターカップ４に対応する複数のインジェクターカップ４Ｅと、第一実施形態の複数のブラケット５に対応する複数のブラケット５Ｅと、を有する。つまり、複数のインジェクターカップ４Ｅ及び複数のブラケット５Ｅは、一体形成部９Ｅとして一体成形されている。複数のインジェクターカップ４Ｅのそれぞれは、インジェクターカップ用開口２７Ｅに隣接する第二ケース部７Ｅの一部を覆うように第二ケース部７Ｅに接合されている。複数のインジェクターカップ４Ｅのそれぞれには、インジェクターカップ用開口２７Ｅに連通される流路４１Ｅが形成されている。複数のブラケット５Ｅのそれぞれは、第二ケース部７Ｅの外表面の一部を覆うように第二ケース部７Ｅに接合されている。 The integrally formed portion 9E is joined to the second case portion 7E so as to partially cover the second case portion 7E. The integrally formed portion 9E has a plurality of injector cups 4E corresponding to the plurality of injector cups 4 of the first embodiment and a plurality of brackets 5E corresponding to the plurality of brackets 5 of the first embodiment. That is, the plurality of injector cups 4E and the plurality of brackets 5E are integrally formed as the integrally formed portion 9E. Each of the plurality of injector cups 4E is joined to the second case portion 7E so as to cover a portion of the second case portion 7E adjacent to the injector cup opening 27E. A channel 41E communicating with the injector cup opening 27E is formed in each of the plurality of injector cups 4E. Each of the plurality of brackets 5E is joined to the second case portion 7E so as to cover part of the outer surface of the second case portion 7E.
　このように、本実施形態の燃料分配管１Ｅでは、貯留空間２１とは反対側に延びる第一ケース部６Ｅの第一フランジ部６６Ｅと貯留空間２１とは反対側に延びる第二ケース部７Ｅの第二フランジ部７６Ｅとが重ね合わされており、シール部８Ｅが、第一フランジ部６６Ｅの少なくとも一部及び第二フランジ部７６Ｅの少なくとも一部を覆うように第一ケース部６Ｅ及び第二ケース部７Ｅに接合されている。つまり、シール部８Ｅは、第一フランジ部６６Ｅと第二フランジ部７６Ｅとを挟み込むように、第一ケース部６Ｅ及び第二ケース部７Ｅに接合されている。このため、第一フランジ部６６Ｅと第二フランジ部７６Ｅとの重ね合わせ方向Ｄ３において、シール部８Ｅにより第一ケース部６Ｅと第二ケース部７Ｅとを更に強固に接続することができる。 Thus, in the fuel distribution pipe 1E of the present embodiment, the first flange portion 66E of the first case portion 6E extending on the side opposite to the storage space 21 and the second case portion 7E extending on the side opposite to the storage space 21 The first case portion 6E and the second case portion are overlapped with the second flange portion 76E, and the seal portion 8E covers at least a portion of the first flange portion 66E and at least a portion of the second flange portion 76E. 7E. That is, the seal portion 8E is joined to the first case portion 6E and the second case portion 7E so as to sandwich the first flange portion 66E and the second flange portion 76E. Therefore, the first case portion 6E and the second case portion 7E can be connected more firmly by the seal portion 8E in the overlapping direction D3 of the first flange portion 66E and the second flange portion 76E.
　また、この燃料分配管１Ｅでは、複数のインジェクターカップ４Ｅと複数のブラケット５Ｅとが一体形成部９Ｅとして一体成形されており、一体形成部９Ｅが第二ケース部７Ｅの一部を覆うように第二ケース部７Ｅに接合されている。このため、複数のインジェクターカップ４Ｅ及び複数のブラケット５Ｅが互いに分離されている場合に比べて、複数のインジェクターカップ４Ｅ及び複数のブラケット５Ｅと第二ケース部７Ｅとの接合面積を増大させることができるとともに、複数のインジェクターカップ４Ｅ及び複数のブラケット５Ｅと第二ケース部７Ｅとの接合構造を複雑化することができる。これにより、第二ケース部７Ｅに対する複数のインジェクターカップ４Ｅ及び複数のブラケット５Ｅの接合強度を高くすることができる。 Further, in this fuel distribution pipe 1E, a plurality of injector cups 4E and a plurality of brackets 5E are integrally formed as an integrally formed portion 9E, and the integrally formed portion 9E covers a part of the second case portion 7E. It is joined to the second case part 7E. Therefore, compared to the case where the plurality of injector cups 4E and the plurality of brackets 5E are separated from each other, the joint area between the plurality of injector cups 4E and the plurality of brackets 5E and the second case portion 7E can be increased. In addition, it is possible to complicate the joint structure between the plurality of injector cups 4E and the plurality of brackets 5E and the second case portion 7E. Thereby, the joint strength of the plurality of injector cups 4E and the plurality of brackets 5E to the second case portion 7E can be increased.
［第七実施形態］
　次に、第七実施形態について説明する。第七実施形態は、基本的に第六実施形態と同様であり、第一ケース部、第二ケース部、及びシール部の形状が異なる点のみ、第六実施形態と相違する。このため、以下の説明では、第六実施形態と相違する事項のみを説明し、第六実施形態と同様の説明を省略する。 [Seventh embodiment]
Next, a seventh embodiment will be described. The seventh embodiment is basically the same as the sixth embodiment, and differs from the sixth embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the sixth embodiment will be described, and descriptions similar to those of the sixth embodiment will be omitted.
　図１８は、第七実施形態の燃料分配管の、図１７に対応する断面図である。図１８に示すように、第七実施形態の燃料分配管１Ｆは、第六実施形態の金属ケース２Ｅに対応する金属ケース２Ｆを備える。金属ケース２Ｆは、第六実施形態の第一ケース部６Ｅに対応する第一ケース部６Ｆと、第六実施形態の第二ケース部７Ｅに対応する第二ケース部７Ｆと、第六実施形態のシール部８Ｅに対応するシール部８Ｆと、を有する。 FIG. 18 is a sectional view corresponding to FIG. 17 of the fuel distribution pipe of the seventh embodiment. As shown in FIG. 18, the fuel distribution pipe 1F of the seventh embodiment has a metal case 2F corresponding to the metal case 2E of the sixth embodiment. The metal case 2F includes a first case portion 6F corresponding to the first case portion 6E of the sixth embodiment, a second case portion 7F corresponding to the second case portion 7E of the sixth embodiment, and a and a seal portion 8F corresponding to the seal portion 8E.
　第一ケース部６Ｆは、第六実施形態の第一フランジ部６６Ｅに対応する第一フランジ部６６Ｆを有する。第二ケース部７Ｆは、第六実施形態の第二フランジ部７６Ｅに対応する第二フランジ部７６Ｆを有する。第一フランジ部６６Ｆ及び第二フランジ部７６Ｆは、貯留空間２１とは反対側に延びて、互いに重ね合わされている。そして、第一フランジ部６６Ｆ及び第二フランジ部７６Ｆは、互いに離間する方向に屈曲している。つまり、第一フランジ部６６Ｆは、第二フランジ部７６Ｆと重ね合わされているとともに、第二フランジ部７６Ｆから離れる方向に屈曲している。また、第二フランジ部７６Ｆは、第一フランジ部６６Ｆと重ね合わされているとともに、第一フランジ部６６Ｆから離れる方向に屈曲している。このため、第一フランジ部６６Ｆと第二フランジ部７６Ｆとの間に間隙２２Ｆが形成されている。 The first case part 6F has a first flange part 66F corresponding to the first flange part 66E of the sixth embodiment. The second case portion 7F has a second flange portion 76F corresponding to the second flange portion 76E of the sixth embodiment. The first flange portion 66F and the second flange portion 76F extend to the side opposite to the storage space 21 and overlap each other. The first flange portion 66F and the second flange portion 76F are bent in a direction away from each other. That is, the first flange portion 66F overlaps with the second flange portion 76F and is bent in a direction away from the second flange portion 76F. In addition, the second flange portion 76F overlaps with the first flange portion 66F and is bent in a direction away from the first flange portion 66F. Therefore, a gap 22F is formed between the first flange portion 66F and the second flange portion 76F.
　シール部８Ｆは、第一フランジ部６６Ｆの少なくとも一部及び第二フランジ部７６Ｆの少なくとも一部を覆うように、第一ケース部６Ｆ及び第二ケース部７Ｆに接合されている。本実施形態では、一例として、第一フランジ部６６Ｆ及び第二フランジ部７６Ｆの全体を覆うように、第一ケース部６Ｆ及び第二ケース部７Ｆに接合されている。また、シール部８Ｆは、第一フランジ部６６Ｆと第二フランジ部７６Ｆとの間に形成された間隙２２Ｆに充填されている。 The seal portion 8F is joined to the first case portion 6F and the second case portion 7F so as to cover at least a portion of the first flange portion 66F and at least a portion of the second flange portion 76F. In this embodiment, as an example, it is joined to the first case portion 6F and the second case portion 7F so as to cover the entire first flange portion 66F and the second flange portion 76F. Also, the seal portion 8F is filled in the gap 22F formed between the first flange portion 66F and the second flange portion 76F.
　このように、本実施形態の燃料分配管１Ｆでは、第一フランジ部６６Ｆ及び第二フランジ部７６Ｆが、互いに離間する方向に屈曲している。このため、第一フランジ部６６Ｆ及び第二フランジ部７６Ｆがシール部８Ｆに引っ掛かることで、第一フランジ部６６Ｆと第二フランジ部７６Ｆとの重ね合わせ方向Ｄ４と直交する方向への、シール部８Ｂに対する第一ケース部６Ｂの抜けを抑制することができる。 As described above, in the fuel distribution pipe 1F of the present embodiment, the first flange portion 66F and the second flange portion 76F are bent in directions separating from each other. Therefore, since the first flange portion 66F and the second flange portion 76F are caught by the seal portion 8F, the seal portion 8B in the direction orthogonal to the overlapping direction D4 of the first flange portion 66F and the second flange portion 76F It is possible to suppress the first case portion 6B from coming off.
　また、この燃料分配管１Ｆでは、第一フランジ部６６Ｆと第二フランジ部７６Ｆとの間に形成された間隙２２Ｆにシール部８Ｆが充填されている。これにより、第一ケース部６Ｆ及び第二ケース部７Ｆとシール部８Ｆとの接触面積が増大するため、第一ケース部６Ｆ及び第二ケース部７Ｆとシール部８Ｆとを更に強固に接合することができる。 Also, in the fuel distribution pipe 1F, the gap 22F formed between the first flange portion 66F and the second flange portion 76F is filled with the seal portion 8F. As a result, the contact area between the first case portion 6F and the second case portion 7F and the seal portion 8F increases, so that the first case portion 6F and the second case portion 7F and the seal portion 8F can be joined more firmly. can be done.
［第八実施形態］
　次に、第八実施形態について説明する。第八実施形態は、基本的に第六実施形態と同様であり、第一ケース部、第二ケース部、及びシール部の形状が異なる点のみ、第六実施形態と相違する。このため、以下の説明では、第六実施形態と相違する事項のみを説明し、第六実施形態と同様の説明を省略する。 [Eighth embodiment]
Next, an eighth embodiment will be described. The eighth embodiment is basically the same as the sixth embodiment, and differs from the sixth embodiment only in the shapes of the first case portion, the second case portion, and the seal portion. Therefore, in the following description, only matters different from the sixth embodiment will be described, and descriptions similar to those of the sixth embodiment will be omitted.
　図１９は、第八実施形態の燃料分配管を示す平面図である。図２０は、図１９に示すＸＸ－ＸＸ線における断面図である。図１９及び図２０に示すように、第八実施形態の燃料分配管１Ｇは、第六実施形態の金属ケース２Ｅに対応する金属ケース２Ｇを備える。金属ケース２Ｇは、第六実施形態の第一ケース部６Ｅに対応する第一ケース部６Ｇと、第六実施形態の第二ケース部７Ｅに対応する第二ケース部７Ｇと、第六実施形態のシール部８Ｅに対応するシール部８Ｇと、を有する。 FIG. 19 is a plan view showing the fuel distribution pipe of the eighth embodiment. 20 is a cross-sectional view taken along line XX-XX shown in FIG. 19. FIG. As shown in FIGS. 19 and 20, the fuel distribution pipe 1G of the eighth embodiment includes a metal case 2G corresponding to the metal case 2E of the sixth embodiment. The metal case 2G includes a first case portion 6G corresponding to the first case portion 6E of the sixth embodiment, a second case portion 7G corresponding to the second case portion 7E of the sixth embodiment, and a and a seal portion 8G corresponding to the seal portion 8E.
　第一ケース部６Ｇは、第六実施形態の第一フランジ部６６Ｅに対応する第一フランジ部６６Ｇを有する。第二ケース部７Ｇは、第六実施形態の第二フランジ部７６Ｅに対応する第二フランジ部７６Ｇを有する。第一フランジ部６６Ｇ及び第二フランジ部７６Ｇは、貯留空間２１とは反対側に延びて、互いに重ね合わされている。そして、第一フランジ部６６Ｇ及び第二フランジ部７６Ｇには、第一フランジ部６６Ｇ及び第二フランジ部７６Ｇを貫通する複数の穴２８Ｇが形成されている。複数の穴２８Ｇのそれぞれは、第一フランジ部６６Ｇに形成された第一穴６７Ｇと、第二フランジ部７６Ｇに形成された第二穴７７Ｇと、により形成されている。穴２８Ｇの数は特に限定されるものではなく、例えば一つであってもよい。 The first case part 6G has a first flange part 66G corresponding to the first flange part 66E of the sixth embodiment. The second case portion 7G has a second flange portion 76G corresponding to the second flange portion 76E of the sixth embodiment. The first flange portion 66G and the second flange portion 76G extend to the side opposite to the storage space 21 and overlap each other. A plurality of holes 28G penetrating through the first flange portion 66G and the second flange portion 76G are formed in the first flange portion 66G and the second flange portion 76G. Each of the plurality of holes 28G is formed by a first hole 67G formed in the first flange portion 66G and a second hole 77G formed in the second flange portion 76G. The number of holes 28G is not particularly limited, and may be one, for example.
　シール部８Ｇは、第一フランジ部６６Ｇの少なくとも一部及び第二フランジ部７６Ｇの少なくとも一部を覆うように、第一ケース部６Ｇ及び第二ケース部７Ｇに接合されている。本実施形態では、一例として、第一フランジ部６６Ｇ及び第二フランジ部７６Ｇの全体を覆うように、第一ケース部６Ｇ及び第二ケース部７Ｇに接合されている。また、シール部８Ｇは、第一フランジ部６６Ｇ及び第二フランジ部７６Ｇを貫通する複数の穴２８Ｇのそれぞれに充填されている。 The seal portion 8G is joined to the first case portion 6G and the second case portion 7G so as to cover at least a portion of the first flange portion 66G and at least a portion of the second flange portion 76G. In this embodiment, as an example, it is joined to the first case portion 6G and the second case portion 7G so as to cover the entire first flange portion 66G and the second flange portion 76G. In addition, the seal portion 8G is filled in each of the plurality of holes 28G passing through the first flange portion 66G and the second flange portion 76G.
　このように、本実施形態の燃料分配管１Ｇでは、第一フランジ部６６Ｇ及び第二フランジ部７６Ｇを貫通する複数の穴２８Ｇのそれぞれにシール部８Ｇが充填されている。つまり、シール部８Ｇは、第一フランジ部６６Ｇ及び第二フランジ部７６Ｇにおいて、第一ケース部６Ｇと第二ケース部７Ｇとを挟み込むとともに、第一ケース部６Ｇと第二ケース部７Ｇとの重ね合わせ方向Ｄ５と直交する方向への第一ケース部６Ｇ及び第二ケース部７Ｇの相対移動を阻害するように、第一ケース部６Ｇ及び第二ケース部７Ｇに接合されている。このため、シール部８Ｇにより第一ケース部６Ｇと第二ケース部７Ｇとを更に強固に接続することができる。 Thus, in the fuel distribution pipe 1G of the present embodiment, each of the plurality of holes 28G passing through the first flange portion 66G and the second flange portion 76G is filled with the seal portion 8G. That is, the seal portion 8G sandwiches the first case portion 6G and the second case portion 7G between the first flange portion 66G and the second flange portion 76G, and overlaps the first case portion 6G and the second case portion 7G. It is joined to the first case portion 6G and the second case portion 7G so as to inhibit relative movement of the first case portion 6G and the second case portion 7G in the direction orthogonal to the alignment direction D5. Therefore, the first case portion 6G and the second case portion 7G can be connected more firmly by the seal portion 8G.
　以上、本発明の実施形態について説明したが、本発明は、上記実施形態に限られるものではなく、各請求項に記載した要旨を変更しない範囲で変形し、又は他のものに適用してもよい。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and may be modified or applied to other things within the scope of not changing the gist of each claim. good.
　例えば、上記の実施形態では、シール部、インレット、インジェクターカップ、及びブラケットが樹脂部であるものとして説明した。しかしながら、インレット、インジェクターカップ、及びブラケットのうちの一部は、金属部であってもよい。これらのうちの一部が金属部である場合でも、全ての部材がろう付けされる金属製の燃料分配管に比べて、ろう付け箇所が少なくなるため、製造時の二酸化炭素の発生を抑制することができる。また、これら以外の部分が樹脂部であってもよい。例えば、燃料分配管が、貯留空間に貯留されている燃料の圧力を検出する燃料圧力センサを接続するためのセンサ接続部を備える場合、センサ接続部が樹脂部であってもよい。 For example, in the above embodiments, the seal portion, inlet, injector cup, and bracket are assumed to be resin portions. However, some of the inlet, injector cup and bracket may be metal parts. Even if some of these parts are metal parts, there are fewer brazed points than metal fuel distribution pipes where all parts are brazed, so carbon dioxide emissions are suppressed during manufacturing. be able to. Also, portions other than these may be resin portions. For example, when the fuel distribution pipe includes a sensor connection portion for connecting a fuel pressure sensor that detects the pressure of the fuel stored in the storage space, the sensor connection portion may be a resin portion.
　また、例えば、上記の実施形態では、金属ケースは、金属部である第一ケース部及び第二ケース部と、樹脂部であるシール部と、を備えるものとして説明した。しかしながら、金属ケースは、樹脂部であるシール部を備えずに、第一ケース部と第二ケース部とが一体となった金属部のみを備えるものであってもよい。 Further, for example, in the above embodiment, the metal case has been described as including the first case portion and the second case portion, which are metal portions, and the seal portion, which is a resin portion. However, the metal case may be provided with only the metal portion in which the first case portion and the second case portion are integrated without the seal portion being the resin portion.
　本発明の一側面は、燃料を複数のインジェクタに分配供給する燃料分配管として利用可能である。 One aspect of the present invention can be used as a fuel distribution pipe that distributes and supplies fuel to a plurality of injectors.
　１，１Ａ，１Ｂ，１Ｃ，１Ｄ，１Ｅ，１Ｆ，１Ｇ…燃料分配管、２，２Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆ，２Ｇ…金属ケース、３…インレット、４，４Ｅ…インジェクターカップ、５，５Ｅ…ブラケット、６，６Ａ，６Ｂ，６Ｃ，６Ｄ，６Ｅ，６Ｆ，６Ｇ…第一ケース部、７，７Ａ，７Ｂ，７Ｃ，７Ｄ，７Ｅ，７Ｆ，７Ｇ…第二ケース部、８，８Ａ，８Ｂ，８Ｄ，８Ｅ，８Ｆ，８Ｇ…シール部、９Ｅ…一体形成部、２１，２１Ｄ…貯留空間、２２Ａ，２２Ｂ，２２Ｆ…間隙、２５，２５Ａ，２５Ｂ…重ね合わせ部分、２６，２６Ｃ…インレット用開口、２７，２７Ｃ，２７Ｅ…インジェクターカップ用開口、２８Ｇ…穴、３１…流路、３２…外表面部、３３…内表面部、３４…接続部、４１，４１Ｅ…流路、４２…外表面部、４３…内表面部、４４…接続部、６１，６１Ａ，６１Ｂ…周縁部、６２，６２Ｃ…外表面、６３，６３Ｃ…内表面、６４Ｃ…第一ケース本体、６５Ｃ…第一円筒部、６６Ｅ，６６Ｆ，６６Ｇ…第一フランジ部、６７Ｇ…第一穴、７１，７１Ａ，７１Ｂ…周縁部、７２，７２Ｃ…外表面、７３，７３Ｃ…内表面、７４Ｃ…第二ケース本体、７５Ｃ…第二円筒部、７６Ｅ，７６Ｆ，７６Ｇ…第二フランジ部、７７Ｇ…第二穴、Ｄ１，Ｄ２，Ｄ３，Ｄ４，Ｄ５…重ね合わせ方向。 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G... fuel distribution pipes, 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G... metal cases, 3... inlets, 4, 4E... injector cups, 5, 5E... Bracket, 6, 6A, 6B, 6C, 6D, 6E, 6F, 6G... First case portion, 7, 7A, 7B, 7C, 7D, 7E, 7F, 7G... Second case portion, 8, 8A, 8B, 8D, 8E, 8F, 8G... seal portion, 9E... integrally formed portion, 21, 21D... storage space, 22A, 22B, 22F... gap, 25, 25A, 25B... overlapping portion, 26, 26C... Inlet opening 27, 27C, 27E Injector cup opening 28G Hole 31 Flow path 32 Outer surface 33 Inner surface 34 Connection 41, 41E Flow path 42 Outer surface portion 43... Inner surface portion 44... Connection portion 61, 61A, 61B... Peripheral edge portion 62, 62C... Outer surface 63, 63C... Inner surface 64C... First case main body 65C... First cylinder Part 66E, 66F, 66G... First flange part 67G... First hole 71, 71A, 71B... Periphery part 72, 72C... Outer surface 73, 73C... Inner surface 74C... Second case main body, 75C ... second cylindrical portion, 76E, 76F, 76G ... second flange portion, 77G ... second hole, D1, D2, D3, D4, D5 ... overlapping directions.

Claims (16)

  1. 　燃料を複数のインジェクタに分配供給する燃料分配管であって、
    　前記燃料を貯留する貯留空間を形成する金属部と、
    　前記金属部の一部を覆うように前記金属部に接合された樹脂部と、を備える、
    燃料分配管。     A fuel distribution pipe that distributes and supplies fuel to a plurality of injectors,
    a metal portion forming a storage space for storing the fuel;
    a resin portion bonded to the metal portion so as to cover a portion of the metal portion;
    fuel distribution pipe.
  2. 　前記金属部は、第一ケース部と、第二ケース部と、を有し、
    　前記樹脂部は、前記第一ケース部と前記第二ケース部とを接続して前記第一ケース部と前記第二ケース部との間をシールするシール部を有し、
    　前記シール部は、前記第一ケース部と前記第二ケース部との接続部分を覆うように前記第一ケース部及び前記第二ケース部に接合されている、
    請求項１に記載の燃料分配管。     The metal portion has a first case portion and a second case portion,
    The resin portion has a seal portion that connects the first case portion and the second case portion and seals between the first case portion and the second case portion,
    The seal portion is joined to the first case portion and the second case portion so as to cover a connection portion between the first case portion and the second case portion,
    2. A fuel distribution pipe according to claim 1.
  3. 　前記第二ケース部の少なくとも一部は、前記第一ケース部の少なくとも一部に重ね合わされており、
    　前記シール部は、前記第一ケース部と前記第二ケース部との重ね合わせ部分を覆うように前記第一ケース部及び前記第二ケース部に接合されている、
    請求項２に記載の燃料分配管。     At least part of the second case part overlaps at least part of the first case part,
    The seal portion is joined to the first case portion and the second case portion so as to cover an overlapping portion of the first case portion and the second case portion,
    3. A fuel distribution pipe according to claim 2.
  4. 　前記重ね合わせ部分において、前記第一ケース部の少なくとも一部は、前記第二ケース部から離れる方向に延びている、
    請求項３に記載の燃料分配管。     At least part of the first case portion extends away from the second case portion in the overlapping portion,
    4. A fuel distribution pipe according to claim 3.
  5. 　前記重ね合わせ部分において、前記第一ケース部の少なくとも一部は、前記第二ケース部から離れる方向に屈曲している、
    請求項３に記載の燃料分配管。     At least a portion of the first case portion is bent in a direction away from the second case portion at the overlapping portion,
    4. A fuel distribution pipe according to claim 3.
  6. 　前記重ね合わせ部分における前記第一ケース部と前記第二ケース部との間に間隙が形成されており、
    　前記シール部は、前記間隙に充填されている、
    請求項３～５の何れか一項に記載の燃料分配管。     A gap is formed between the first case portion and the second case portion in the overlapping portion,
    The seal portion is filled in the gap,
    A fuel distribution pipe according to any one of claims 3-5.
  7. 　前記第一ケース部は、前記貯留空間とは反対側に延びる第一フランジ部を有し、
    　前記第二ケース部は、前記貯留空間とは反対側に延びて前記第一フランジ部に重ね合わされる第二フランジ部を有し、
    　前記シール部は、前記第一フランジ部の少なくとも一部及び前記第二フランジ部の少なくとも一部を覆うように前記第一ケース部及び前記第二ケース部に接合されている、
    請求項２～５の何れか一項に記載の燃料分配管。     The first case portion has a first flange portion extending opposite to the storage space,
    The second case portion has a second flange portion that extends in a direction opposite to the storage space and overlaps the first flange portion,
    The seal portion is joined to the first case portion and the second case portion so as to cover at least a portion of the first flange portion and at least a portion of the second flange portion,
    A fuel distribution pipe according to any one of claims 2-5.
  8. 　第一フランジ部及び第二フランジ部は、第一フランジ部及び第二フランジ部を貫通する穴を有しており、
    　前記シール部は、前記穴に充填されている、
    請求項７に記載の燃料分配管。     The first flange portion and the second flange portion have holes penetrating the first flange portion and the second flange portion,
    The seal portion is filled in the hole,
    8. A fuel distribution pipe according to claim 7.
  9. 　前記金属部は、前記貯留空間に連通された開口を有し、
    　前記樹脂部は、前記開口に隣接する前記金属部の一部を覆うように前記金属部に接合された開口接続部を有する、
    請求項１～８の何れか一項に記載の燃料分配管。     The metal part has an opening communicating with the storage space,
    The resin portion has an opening connecting portion joined to the metal portion so as to cover a portion of the metal portion adjacent to the opening,
    A fuel distribution pipe according to any one of claims 1-8.
  10. 　前記開口接続部は、前記開口に隣接する前記金属部の外表面の一部及び前記開口に隣接する前記金属部の内表面の一部を覆うように前記金属部に接合されている、
    請求項９に記載の燃料分配管。     The opening connecting portion is joined to the metal portion so as to cover a portion of the outer surface of the metal portion adjacent to the opening and a portion of the inner surface of the metal portion adjacent to the opening.
    10. A fuel distribution pipe according to claim 9.
  11. 　前記金属部は、前記貯留空間を形成するケース本体と、前記ケース本体に対して屈曲して前記開口を形成する円筒部と、を有し、
    　前記開口接続部は、前記ケース本体の一部及び前記円筒部を覆うように前記金属部に接合されている、
    請求項９又は１０に記載の燃料分配管。     The metal part has a case body that forms the storage space, and a cylindrical part that bends with respect to the case body to form the opening,
    The opening connecting portion is joined to the metal portion so as to cover a portion of the case body and the cylindrical portion,
    11. Fuel distribution pipe according to claim 9 or 10.
  12. 　前記開口接続部は、前記燃料を前記貯留空間に供給するために前記開口に連通される流路が形成されたインレットを有する、
    請求項９～１１の何れか一項に記載の燃料分配管。     The opening connecting part has an inlet formed with a flow path communicating with the opening for supplying the fuel to the storage space,
    A fuel distribution pipe according to any one of claims 9-11.
  13. 　前記開口接続部は、前記インジェクタを保持するとともに、前記燃料を前記インジェクタに供給するために前記開口に連通される流路が形成されたインジェクターカップを有する、
    請求項９～１２の何れか一項に記載の燃料分配管。     The opening connecting part has an injector cup formed with a flow path communicating with the opening for holding the injector and supplying the fuel to the injector.
    A fuel distribution pipe according to any one of claims 9-12.
  14. 　前記樹脂部は、前記燃料分配管を車両に固定するためのブラケットを有し、
    　前記ブラケットは、前記金属部の外表面の一部を覆うように前記金属部に接合されている、
    請求項１～１３の何れか一項に記載の燃料分配管。     The resin portion has a bracket for fixing the fuel distribution pipe to the vehicle,
    The bracket is joined to the metal part so as to cover part of the outer surface of the metal part,
    A fuel distribution pipe according to any one of claims 1-13.
  15. 　前記樹脂部は、前記インジェクタを保持するためのインジェクターカップと、前記燃料分配管を車両に固定するためのブラケットと、が一体成形された一体形成部を有し、
    　前記一体形成部は、前記金属部の一部を覆うように前記金属部に接合されている、
    請求項１～１４の何れか一項に記載の燃料分配管。     The resin portion has an integrally formed portion in which an injector cup for holding the injector and a bracket for fixing the fuel distribution pipe to the vehicle are integrally formed,
    The integrally formed portion is joined to the metal portion so as to cover a portion of the metal portion.
    A fuel distribution pipe according to any one of claims 1-14.
  16. 　前記金属部には、めっきが施されている、
    請求項１～１５の何れか一項に記載の燃料分配管。     The metal portion is plated,
    A fuel distribution pipe according to any one of claims 1-15.
PCT/JP2022/034074 2021-09-14 2022-09-12 Fuel distribution pipe WO2023042800A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004052093A (en) * 2002-07-24 2004-02-19 Sanoh Industrial Co Ltd Multilayer plated automobile fuel piping part
US20060163243A1 (en) * 2005-01-25 2006-07-27 Stieler David C Method of coupling fuel system components
JP2006200417A (en) * 2005-01-19 2006-08-03 Sanoh Industrial Co Ltd Fuel injection rail
JP2006266131A (en) * 2005-03-23 2006-10-05 Keihin Corp Retaining member for fuel injection valve
JP2010180727A (en) * 2009-02-03 2010-08-19 Toyota Motor Corp Delivery pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004052093A (en) * 2002-07-24 2004-02-19 Sanoh Industrial Co Ltd Multilayer plated automobile fuel piping part
JP2006200417A (en) * 2005-01-19 2006-08-03 Sanoh Industrial Co Ltd Fuel injection rail
US20060163243A1 (en) * 2005-01-25 2006-07-27 Stieler David C Method of coupling fuel system components
JP2006266131A (en) * 2005-03-23 2006-10-05 Keihin Corp Retaining member for fuel injection valve
JP2010180727A (en) * 2009-02-03 2010-08-19 Toyota Motor Corp Delivery pipe

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