WO2009122826A1 - Oil path structure - Google Patents

Oil path structure Download PDF

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Publication number
WO2009122826A1
WO2009122826A1 PCT/JP2009/053420 JP2009053420W WO2009122826A1 WO 2009122826 A1 WO2009122826 A1 WO 2009122826A1 JP 2009053420 W JP2009053420 W JP 2009053420W WO 2009122826 A1 WO2009122826 A1 WO 2009122826A1
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WO
WIPO (PCT)
Prior art keywords
oil
oil passage
downstream
upstream
passage
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PCT/JP2009/053420
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French (fr)
Japanese (ja)
Inventor
誠 原田
栄 中條
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本田技研工業株式会社
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Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to CN2009801113396A priority Critical patent/CN101981280B/en
Priority to BRPI0909298-6A priority patent/BRPI0909298B1/en
Publication of WO2009122826A1 publication Critical patent/WO2009122826A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/12—Gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/20—Amount of lubricant
    • F16N2270/22—Amount of lubricant with restrictions

Definitions

  • a first coupled member having a first joint surface and a second coupled member having a second joint surface are coupled to each other with a gasket interposed between the first and second joint surfaces.
  • An upstream oil passage member that opens to the joint surface is provided in the first coupled member, and opens to one or the other of the first and second joint surfaces and communicates with the upstream oil passage and the first downstream oil passage and the first oil passage member.
  • the two downstream oil passages are configured so that the distance between the second downstream oil passage and the upstream oil passage is larger than the distance between the first downstream oil passage and the upstream oil passage, and the first and second coupled members And an oil passage structure in which at least one of the first and second downstream oil passages is provided in the second coupled member.
  • crankcase side oil passage provided in the crankcase is opened to the connecting surface of the crankcase to the cylinder block at the approximate center of the two stud bolts connecting the crankcase and the cylinder block.
  • the oil passages are configured such that oil guided from the oil passages is diverted to the both stud bolts by an oil groove provided on the cylinder block side, and the oils are respectively guided to the annular oil passages formed between the stud bolts and the cylinder block.
  • the structure is known from US Pat. Japanese Patent No. 3797501
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide an oil passage structure capable of evenly distributing oil to two downstream oil passages while increasing the degree of freedom in layout. .
  • a first coupled member having a first joint surface and a second coupled member having a second joint surface sandwich a gasket between the first and second joint surfaces.
  • an upstream oil passage that is coupled to each other and that opens to the first joint surface is provided in the first coupled member, and that opens to one or the other of the first and second joint surfaces and communicates with the upstream oil passage.
  • the first downstream oil passage and the second downstream oil passage have a distance between the second downstream oil passage and the upstream oil passage larger than a distance between the first downstream oil passage and the upstream oil passage;
  • the first joint surface has an upstream side Communicating the oil passage A first oil groove is provided, and a second oil groove is provided on the second joint surface so that at least a part thereof faces the first oil groove, and the first and second downstream oil paths from the upstream oil path.
  • a communication hole is provided in the gasket for disposing a downstream end along the flow direction upstream of the first downstream oil passage in the flow direction of oil toward the first port and communicating between the first and second oil grooves.
  • the first downstream oil passage is opened to one of the first and second oil grooves, and the second downstream oil passage is opened to the other of the first and second oil grooves.
  • the oil from the upstream oil passage flows through the first oil groove and flows to the first downstream oil passage or the second downstream oil passage side, and the communication hole of the gasket is provided.
  • the second oil groove and circulates in the second oil groove to the second downstream oil passage or the first downstream oil passage, and the oil flow direction does not change greatly.
  • the oil flow rate of one of the first downstream oil passage and the second downstream oil passage is not significantly smaller than the other, and the oil is evenly distributed to the first downstream oil passage and the second downstream oil passage. Since it becomes easy, the freedom degree of a layout increases.
  • FIG. 1 is a right side view of the internal combustion engine of the first embodiment.
  • (First embodiment) 2 is a cross-sectional view taken along line 2-2 of FIG.
  • FIG. 3 is an enlarged view of a main part of FIG.
  • (First embodiment) 4 is a cross-sectional view taken along line 4-4 of FIG.
  • (First embodiment) 5 is a cross-sectional view taken along line 5-5 of FIG.
  • FIG. 6 is a cross-sectional view corresponding to FIG. 4 of the second embodiment.
  • crankcase halves 28, 78 which are second coupled members, gasket 29, clutch cover 46, which is the first coupled member, third oil passage 55, which is an upstream oil passage.
  • Fifth oil passage 56 as a first downstream oil passage
  • Sixth oil passages 61 and 74 as second downstream oil passages ...
  • First joining surfaces 62 and 76 ... second joining Surfaces 68, 82 ... first oil grooves 69, 83 ... second oil grooves 70 ... second communication holes 70a, 85a that are communication holes ... downstream ends 75 of the communication holes ... first Second member 79 ... upstream oil passage 80 ... first downstream oil passage 81 ... second downstream oil passage 85 ... communication hole
  • 1 to 5 show a first embodiment of the present invention.
  • an engine body 11 of an internal combustion engine mounted on a motorcycle includes a crankcase 13 for rotatably supporting a crankshaft 12 having an axis extending in the width direction of the motorcycle, and a front side of the crankcase 13.
  • a cylinder block 14 that is coupled to the upper part and rises forward is provided, a cylinder head 15 that is coupled to the upper part of the cylinder block 14, and a head cover 16 that is coupled to the cylinder head 15.
  • crankcase 13 includes a pair of crankcase halves 13a and 13b which are coupled to each other by a mating surface 10 orthogonal to the axis of the crankshaft 12, and the crankshaft 12 is composed of both crankcase halves 13a. 13b are rotatably supported via bearing members 17 and 18, respectively.
  • a balancer 19 having an axis parallel to the crankshaft 12 is rotatably supported on the crankcase 13 in front of the crankshaft 12 (to the right in FIG. 1). Is transmitted via the gear mechanism 20.
  • the gear mechanism 20 includes a drive gear 21 fixed to the crankshaft 12 on the outer side of the left crankcase half 13b and the outer side of the crankcase half 13b.
  • a driven gear 22 is provided at one end of the balancer 19 and meshes with the drive gear 21.
  • a water pump 23 is connected to the other end of the balancer 19.
  • a plurality of stages of gear trains are alternatively provided between the main shaft 25 and the counter shaft 26 having an axis parallel to the crankshaft 12 in the crankcase 13 behind the crankshaft 12.
  • a gear speed change mechanism 27 provided to be established is accommodated.
  • a clutch cover 29 is fastened to the right crankcase half 13a of both the crankcase halves 13a and 13b via a gasket 28, and a clutch is accommodated between the crankcase half 13a and the clutch cover 29.
  • a chamber 30 is formed.
  • the clutch housing chamber 30 houses a clutch (not shown) provided between the main shaft 25 and the crankshaft 12 and arranged coaxially with the main shaft 25 and an oil pump 31.
  • the oil pump 31 is of a trochoid type in which an inner rotor 35 and an outer rotor 36 are accommodated in a pump housing 32, and is disposed in the lower part of the clutch accommodating chamber.
  • the pump housing 32 includes a bowl-shaped housing main body 33 and a cover plate 34 that closes the opening of the housing main body 33.
  • the pump housing 32 is sandwiched between the crankcase half 13 a and the housing main body 33. Coupled to the crankcase half 13a.
  • the inner rotor 35 is fixed to a pump shaft 37 rotatably supported on the pump housing 31, and a driven gear 38 is fixed to a projecting portion of the pump shaft 37 from the pump housing 32.
  • the driven gear 38 is engaged with a drive gear 39 fixed to the crankshaft 12, and rotational power from the crankshaft 12 is input to the pump shaft 37.
  • an oil storage chamber 40 is formed in the lower portion of the crankcase 13, and the oil in the oil storage chamber 40 is transferred by an oil pump 31 via an oil strainer 41 mounted on the lower portion of the crankcase half 13a.
  • a drive gear 21 of a gear mechanism 20 for transmitting rotational power from the crankshaft 12 to the balancer 19 side is disposed above the oil storage chamber 40, and the rotational wind pressure generated by the rotation of the drive gear 21.
  • the left crankcase half 13b has a protrusion 42 disposed between the oil storage chamber 40 and the drive gear 21.
  • the protrusion 42 is formed in an arc shape so as to surround the drive gear 21 from below.
  • the oil discharged from the oil pump 31 is guided to an oil filter 43 attached to the front surface of the right crankcase half 13a through a first oil passage 44 provided in the crankcase half 13a.
  • the oil purified by the filter 43 is guided to a third oil passage 46 provided in the clutch cover 29 through a second oil passage 45 provided in the crankcase half 13a.
  • the third oil passage 46 is provided in the clutch cover 29 so as to extend in the vertical direction, and an intermediate portion of the third oil passage 46 communicates with a fourth oil passage 47 provided coaxially with the crankshaft 12.
  • the oil introduced into the fourth oil passage 47 is used for lubricating the needle bearing 50 interposed between the connecting rod large end portion 48 and the crank pin 49.
  • the upper portion of the third oil passage 46 is one of a plurality of through bolts 51, 51... That couple the cylinder head 15 sandwiching the cylinder block 14 between the crankcase 13 and the crankcase 13.
  • a fifth oil passage that communicates with the annular oil passage 52 formed between the cylinder block 14 and the cylinder head 15 via the first orifice 53 and guides oil to the main shaft 25 of the gear transmission mechanism 27.
  • 55 and a sixth oil passage 56 that guides oil to the countershaft 26 of the gear transmission mechanism 27 through a second orifice 54.
  • the sixth oil passage 56 is arranged such that the distance from the third oil passage 46 is larger than the distance between the fifth oil passage 55 and the third oil passage 46.
  • the cylinder head 15 and the head cover 16 accommodate a valve gear 59 having a pair of camshafts 57 and 58, and the annular oil passage 52 guides oil to the valve gear 59 side.
  • a seventh oil passage 60 provided in the cylinder head 15 communicates with the seventh oil passage 60.
  • the communication structure between the third oil passage 46 and the fifth and sixth oil passages 55 and 56 is configured according to the present invention, and the clutch cover 29 corresponds to the first coupled member of the present invention.
  • the crankcase half 13a corresponds to the second coupled member of the present invention
  • the third oil passage 46 corresponds to the upstream oil passage of the present invention
  • the fifth oil passage 55 corresponds to the first downstream oil of the present invention.
  • the sixth oil passage 56 corresponds to the second downstream oil passage of the present invention.
  • the clutch cover 29 is provided with a first joint surface 61 that contacts the gasket 28, and the crankcase half 13a is provided with a second joint surface 62 that contacts the gasket 28 from the opposite side of the clutch cover 29.
  • the third oil passage 46 is open to the first joint surface 61.
  • the fifth and sixth oil passages 55 and 56 are provided in one or the other of the clutch cover 29 and the crankcase half 13a so that at least one is provided in the crankcase half 13a.
  • both the fifth and sixth oil passages 55 and 56 are provided in the crankcase half 13a.
  • the first joint surface 61 is provided with a first recess 63 that opens the third oil passage 46, and a second recess 64 that is disposed at a distance from the first recess 63 toward the fifth oil passage 55,
  • the crankcase half 13 a is provided with a third recess 65 corresponding to the first and second recesses 63 and 64.
  • the gasket 28 is provided with a first communication hole 66 that allows the first recess 63 to communicate with the third recess 65, and the third recess 65 and the annular oil passage 52 are connected to each other in the first crankcase half 13 a.
  • a first orifice 53 is interposed in the middle of the oil passage 60.
  • a second orifice 54 is sandwiched between the clutch cover 29 and the crankcase half 13a so as to be interposed between the third recess 65 and the second recess 64, and the second recess 64 includes the second orifice 54, the second The third oil passage 46 is communicated with the third recess 65, the first communication hole 66, and the first recess 63.
  • the first joint surface 61 is provided with a first oil groove 68 extending through one end of the second recess 64 to a portion corresponding to the sixth oil passage 56, and the second joint surface 62.
  • the fifth oil passage 55 is provided in the crankcase half 13 a so as to communicate with the second oil groove 69, and the sixth oil passage 56 is connected to the first oil groove via the third communication hole 71 provided in the gasket 28. 68.
  • the second communication hole 70 is in the flow direction 72 of oil in the flow direction 72 of oil from the third oil passage 46 toward the fifth and sixth oil passages 55, 56 and upstream of the fifth oil passage 55.
  • the downstream end 70a is disposed on the gasket 28 so as to communicate with the first and second oil grooves 68 and 69.
  • Oil from the third oil passage 46 reaches the second recess 64 via the first recess 63, the first communication hole 66, the third recess 65, and the orifice 54. From the second recess 64, the gas flows through the first oil groove 68 to the sixth oil passage 56 and enters the second oil groove 69 through the second communication hole 70 of the gasket 28. Since the oil flows in the fifth oil passage 55 and the oil flow direction does not change greatly, the amount of oil in one of the fifth and sixth oil passages 55 and 56 is significantly smaller than the other. In other words, it becomes easy to evenly distribute the oil to the fifth and sixth oil passages 55 and 56, and the degree of freedom in layout increases.
  • FIG. 6 shows a second embodiment of the present invention.
  • a first coupled member 75 having a first joining surface 74 and a second coupled member 77 having a second joining surface 76 are both joined surfaces 74. , 76 are connected to each other with a gasket 78 interposed therebetween, and an upstream oil passage 79 that opens to the first joint surface 74 is provided in the first joined member 75, and opens to the first joint surface 74 to open the upstream side.
  • a first downstream oil passage 80 communicating with the oil passage 79 is provided in the first coupled member 75, and a distance between the upstream oil passage 79 and a distance between the first downstream oil passage 80 and the upstream oil passage 79 is set.
  • a larger second downstream oil passage 81 is provided in the second coupled member 77 so as to open to the second joint surface 76.
  • the first joint surface 74 is provided with a first oil groove 82 having an upstream oil passage 79 opened, and the second joint surface 76 is at least partially facing the first oil groove 82.
  • An oil groove 83 is provided, and the upstream side of the first upstream oil passage 80 in the oil flow direction 84 from the upstream oil passage 79 toward the first and second downstream oil passages 80, 81.
  • a communication hole 85 is provided in the gasket 78 so as to communicate with the first and second oil grooves 82 and 83 by arranging a downstream end 85 a along the flow direction 84, and the first downstream oil passage 80 is formed in the first oil groove 82.
  • the second downstream oil passage 81 is opened to the second oil groove 83.
  • oil from the upstream oil passage 79 flows through the first oil groove 82 and flows into the first downstream oil passage 80 and enters the second oil groove 83 through the communication hole 85 of the gasket 78. Since the oil flows in the second oil groove 83 toward the second downstream oil passage 81 and the oil flow direction does not change significantly, the oil in one of the first and second downstream oil passages 80 and 81 is not changed. The flow rate is not significantly reduced compared to the other, and the oil is easily evenly distributed to the first and second downstream oil passages 80 and 81, so that the degree of freedom in layout increases.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

An oil path structure adapted such that oil flows between first and second joined members joined together with a gasket therebetween and is distributed from an upstream oil path formed in the first joined member to first and second downstream paths formed in at least the second joined member out of the first and second joined members. A first joint surface (61) has a first oil groove (68) to which the upstream oil path (46) is open. A second joint surface (62) has a second oil groove (69) at least a part of which is faced to the first oil groove (68). A communication hole (70) for interconnecting the first and second oil grooves (68, 69) is formed in the gasket (28) such that, with respect to the direction of oil flow from the upstream oil path (46) toward first and second downstream oil paths (55, 80), the downstream end (70a), in the direction of the oil flow, of the communication hole (70) is positioned upstream of the first downstream oil path (55). The construction has an improved degree of layout freedom and can equally distribute oil to the two downstream oil paths.

Description

オイル通路構造Oil passage structure
　本発明は、第１接合面を有する第１被結合部材と、第２接合面を有する第２被結合部材とが第１および第２接合面間にガスケットを挟んで相互に結合され、第１接合面に開口する上流側オイル通路部材が第１被結合部材に設けられ、第１および第２接合面の一方または他方に開口して前記上流側オイル通路に通じる第１下流側オイル通路および第２下流側オイル通路が、第２下流側オイル通路および上流側オイル通路間の距離を第１下流側オイル通路および上流側オイル通路間の距離よりも大きくして、第１および第２被結合部材の一方または他方に設けられ、第１および第２下流側オイル通路の少なくとも一方が第２被結合部材に設けられるオイル通路構造に関する。 In the present invention, a first coupled member having a first joint surface and a second coupled member having a second joint surface are coupled to each other with a gasket interposed between the first and second joint surfaces. An upstream oil passage member that opens to the joint surface is provided in the first coupled member, and opens to one or the other of the first and second joint surfaces and communicates with the upstream oil passage and the first downstream oil passage and the first oil passage member. The two downstream oil passages are configured so that the distance between the second downstream oil passage and the upstream oil passage is larger than the distance between the first downstream oil passage and the upstream oil passage, and the first and second coupled members And an oil passage structure in which at least one of the first and second downstream oil passages is provided in the second coupled member.
　クランクケースに設けられたクランクケース側オイル通路の下流端が、クランクケースおよびシリンダブロックを結合する２本のスタッドボルトの略中央でクランクケースのシリンダブロックへの結合面に開口され、前記クランクケース側オイル通路から導かれるオイルをシリンダブロック側に設けられたオイル溝で前記両スタッドボルト側に分流せしめ、両スタッドボルトおよびシリンダブロック間に形成される環状オイル通路にオイルをそれぞれ導くようにしたオイル通路構造が、特許文献１で知られている。
日本特許第３７９７５０１号公報 The downstream end of the crankcase side oil passage provided in the crankcase is opened to the connecting surface of the crankcase to the cylinder block at the approximate center of the two stud bolts connecting the crankcase and the cylinder block. The oil passages are configured such that oil guided from the oil passages is diverted to the both stud bolts by an oil groove provided on the cylinder block side, and the oils are respectively guided to the annular oil passages formed between the stud bolts and the cylinder block. The structure is known from US Pat.
Japanese Patent No. 3797501
　ところが、上記特許文献１で開示されたものでは、２つの環状オイル通路に均等にオイルを導くにはクランクケース側オイル通路を両環状オイル通路間の略中央に配置する必要があり、レイアウトの制約を受け易い。 However, in the one disclosed in Patent Document 1, in order to guide oil evenly to the two annular oil passages, it is necessary to dispose the crankcase side oil passage approximately at the center between the two annular oil passages. It is easy to receive.
　本発明は、かかる事情に鑑みてなされたものであり、レイアウトの自由度を高めつつ２つの下流側オイル通路に均等にオイルを分配し得るようにしたオイル通路構造を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide an oil passage structure capable of evenly distributing oil to two downstream oil passages while increasing the degree of freedom in layout. .
　上記目的を達成するために、本発明は、第１接合面を有する第１被結合部材と、第２接合面を有する第２被結合部材とが第１および第２接合面間にガスケットを挟んで相互に結合され、第１接合面に開口する上流側オイル通路が第１被結合部材に設けられ、第１および第２接合面の一方または他方に開口して前記上流側オイル通路に通じる第１下流側オイル通路および第２下流側オイル通路が、第２下流側オイル通路および上流側オイル通路間の距離を第１下流側オイル通路および上流側オイル通路間の距離よりも大きくして、第１および第２被結合部材の一方または他方に設けられ、第１および第２下流側オイル通路の少なくとも一方が第２被結合部材に設けられるオイル通路構造において、第１接合面には、上流側オイル通路を連通させた第１オイル溝が設けられ、第２接合面には少なくとも一部を第１オイル溝に向い合わせる第２オイル溝が設けられ、前記上流側オイル通路から前記第１および第２下流側オイル通路に向けてのオイルの流通方向で前記第１下流側オイル通路よりも上流側に前記流通方向に沿う下流端を配置して第１および第２オイル溝間を連通する連通孔が前記ガスケットに設けられ、第１下流側オイル通路が第１および第２オイル溝の一方に開口され、第２下流側オイル通路が第１および第２オイル溝の他方に開口されることを特徴とする。 In order to achieve the above object, according to the present invention, a first coupled member having a first joint surface and a second coupled member having a second joint surface sandwich a gasket between the first and second joint surfaces. And an upstream oil passage that is coupled to each other and that opens to the first joint surface is provided in the first coupled member, and that opens to one or the other of the first and second joint surfaces and communicates with the upstream oil passage. The first downstream oil passage and the second downstream oil passage have a distance between the second downstream oil passage and the upstream oil passage larger than a distance between the first downstream oil passage and the upstream oil passage; In the oil passage structure provided in one or the other of the first and second coupled members and at least one of the first and second downstream oil passages is disposed in the second coupled member, the first joint surface has an upstream side Communicating the oil passage A first oil groove is provided, and a second oil groove is provided on the second joint surface so that at least a part thereof faces the first oil groove, and the first and second downstream oil paths from the upstream oil path. A communication hole is provided in the gasket for disposing a downstream end along the flow direction upstream of the first downstream oil passage in the flow direction of oil toward the first port and communicating between the first and second oil grooves. The first downstream oil passage is opened to one of the first and second oil grooves, and the second downstream oil passage is opened to the other of the first and second oil grooves.
　本発明の上記構成によれば、上流側オイル通路からのオイルは、第１オイル溝内を流通して第１下流側オイル通路または第２下流側オイル通路側に流通するとともにガスケットの連通孔を介して第２オイル溝内に入り、第２オイル溝内を第２下流側オイル通路または第１下流側オイル通路側に流通することになり、オイルの流れ方向が大きく変わることはないので、第１下流側オイル通路および第２下流側オイル通路の一方のオイル流通量が他方に比べて著しく少なくなることはなく、第１下流側オイル通路および第２下流側オイル通路にオイルを均等に分配し易くなるので、レイアウトの自由度が増大する。 According to the above configuration of the present invention, the oil from the upstream oil passage flows through the first oil groove and flows to the first downstream oil passage or the second downstream oil passage side, and the communication hole of the gasket is provided. Through the second oil groove and circulates in the second oil groove to the second downstream oil passage or the first downstream oil passage, and the oil flow direction does not change greatly. The oil flow rate of one of the first downstream oil passage and the second downstream oil passage is not significantly smaller than the other, and the oil is evenly distributed to the first downstream oil passage and the second downstream oil passage. Since it becomes easy, the freedom degree of a layout increases.
図１は第１実施例の内燃機関の右側面図である。（第１実施例）FIG. 1 is a right side view of the internal combustion engine of the first embodiment. (First embodiment) 図２は図１の２－２線断面図である。（第１実施例）2 is a cross-sectional view taken along line 2-2 of FIG. (First embodiment) 図３は図１の要部拡大図である。（第１実施例）FIG. 3 is an enlarged view of a main part of FIG. (First embodiment) 図４は図３の４－４線断面図である。（第１実施例）4 is a cross-sectional view taken along line 4-4 of FIG. (First embodiment) 図５は図３の５－５線断面図である。（第１実施例）5 is a cross-sectional view taken along line 5-5 of FIG. (First embodiment) 図６は第２実施例の図４に対応した断面図である。（第２実施例）FIG. 6 is a cross-sectional view corresponding to FIG. 4 of the second embodiment. (Second embodiment)
符号の説明Explanation of symbols
１３ａ・・・第２被結合部材であるクランクケース半体
２８，７８・・・ガスケット
２９・・・第１被結合部材であるクラッチカバー
４６・・・上流側オイル通路である第３オイル通路
５５・・・第１下流側オイル通路である第５オイル通路
５６・・・第２下流側オイル通路である第６オイル通路
６１，７４・・・第１接合面
６２，７６・・・第２接合面
６８，８２・・・第１オイル溝
６９，８３・・・第２オイル溝
７０・・・連通孔である第２連通孔
７０ａ，８５ａ・・・連通孔の下流端
７５・・・第１被結合部材
７７・・・第２被結合部材
７９・・・上流側オイル通路
８０・・・第１下流側オイル通路
８１・・・第２下流側オイル通路
８５・・・連通孔 13a, crankcase halves 28, 78, which are second coupled members, gasket 29, clutch cover 46, which is the first coupled member, third oil passage 55, which is an upstream oil passage. ... Fifth oil passage 56 as a first downstream oil passage ... Sixth oil passages 61 and 74 as second downstream oil passages ... First joining surfaces 62 and 76 ... second joining Surfaces 68, 82 ... first oil grooves 69, 83 ... second oil grooves 70 ... second communication holes 70a, 85a that are communication holes ... downstream ends 75 of the communication holes ... first Second member 79 ... upstream oil passage 80 ... first downstream oil passage 81 ... second downstream oil passage 85 ... communication hole
　以下、本発明の実施の形態を、添付の図面に示した本発明の実施例に基づいて説明する。 Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
　図１～図５は本発明の第１実施例を示すものである。 1 to 5 show a first embodiment of the present invention.
　先ず図１において、たとえば自動二輪車に搭載される内燃機関の機関本体１１は、自動二輪車の幅方向に延びる軸線を有するクランクシャフト１２を回転自在に支承するクランクケース１３と、該クランクケース１３の前側上部に結合されて前上がりに立ち上がるシリンダブロック１４と、該シリンダブロック１４の上部に結合されるシリンダヘッド１５と、該シリンダヘッド１５に結合されるヘッドカバー１６とを備える。 First, in FIG. 1, for example, an engine body 11 of an internal combustion engine mounted on a motorcycle includes a crankcase 13 for rotatably supporting a crankshaft 12 having an axis extending in the width direction of the motorcycle, and a front side of the crankcase 13. A cylinder block 14 that is coupled to the upper part and rises forward is provided, a cylinder head 15 that is coupled to the upper part of the cylinder block 14, and a head cover 16 that is coupled to the cylinder head 15.
　図２において、前記クランクケース１３は前記クランクシャフト１２の軸線に直交する合わせ面１０で相互に結合される一対のクランクケース半体１３ａ，１３ｂから成り、前記クランクシャフト１２は両クランクケース半体１３ａ，１３ｂに軸受部材１７，１８を介してそれぞれ回転自在に支承される。 In FIG. 2, the crankcase 13 includes a pair of crankcase halves 13a and 13b which are coupled to each other by a mating surface 10 orthogonal to the axis of the crankshaft 12, and the crankshaft 12 is composed of both crankcase halves 13a. 13b are rotatably supported via bearing members 17 and 18, respectively.
　また前記クランクシャフト１２の前方（図１の右方）で前記クランクケース１３には、クランクシャフト１２と平行な軸線を有するバランサ１９が回転自在に支承されており、バランサ１９にはクランクシャフト１２からの回転動力がギヤ機構２０を介して伝達される。このギヤ機構２０は、前記両クランクケース半体１３ａ，１３ｂのうち左側のクランクケース半体１３ｂの外側方でクランクシャフト１２に固定される駆動ギヤ２１と、前記クランクケース半体１３ｂの外側方で前記バランサ１９の一端に設けられて前記駆動ギヤ２１に噛合する被動ギヤ２２とから成る。また前記バランサ１９の他端にはウォータポンプ２３が連結される。 A balancer 19 having an axis parallel to the crankshaft 12 is rotatably supported on the crankcase 13 in front of the crankshaft 12 (to the right in FIG. 1). Is transmitted via the gear mechanism 20. The gear mechanism 20 includes a drive gear 21 fixed to the crankshaft 12 on the outer side of the left crankcase half 13b and the outer side of the crankcase half 13b. A driven gear 22 is provided at one end of the balancer 19 and meshes with the drive gear 21. A water pump 23 is connected to the other end of the balancer 19.
　前記クランクケース１３内で前記クランクシャフト１２の後方には、図１で示すように、クランクシャフト１２と平行な軸線を有するメインシャフト２５およびカウンタシャフト２６間に複数段の歯車列が択一的に確立可能として設けられて成る歯車変速機構２７が収容される。また前記両クランクケース半体１３ａ，１３ｂのうち右側のクランクケース半体１３ａにはガスケット２８を介してクラッチカバー２９が締結されており、該クランクケース半体１３ａおよびクラッチカバー２９間にはクラッチ収容室３０が形成される。このクラッチ収容室３０には、前記メインシャフト２５および前記クランクシャフト１２間に設けられてメインシャフト２５と同軸に配置されるクラッチ（図示せず）が収容されるとともに、オイルポンプ３１が収容される。このオイルポンプ３１は、ポンプハウジング３２内にインナーロータ３５およびアウターロータ３６が収容されて成るトロコイド型のものであり、前記クラッチ収容室内の下部に配置される。 As shown in FIG. 1, a plurality of stages of gear trains are alternatively provided between the main shaft 25 and the counter shaft 26 having an axis parallel to the crankshaft 12 in the crankcase 13 behind the crankshaft 12. A gear speed change mechanism 27 provided to be established is accommodated. A clutch cover 29 is fastened to the right crankcase half 13a of both the crankcase halves 13a and 13b via a gasket 28, and a clutch is accommodated between the crankcase half 13a and the clutch cover 29. A chamber 30 is formed. The clutch housing chamber 30 houses a clutch (not shown) provided between the main shaft 25 and the crankshaft 12 and arranged coaxially with the main shaft 25 and an oil pump 31. . The oil pump 31 is of a trochoid type in which an inner rotor 35 and an outer rotor 36 are accommodated in a pump housing 32, and is disposed in the lower part of the clutch accommodating chamber.
　ポンプハウジング３２は、椀状のハウジング主体３３と、そのハウジング主体３３の開口部を塞ぐ蓋板３４とから成り、蓋板３４をクランクケース半体１３ａおよびハウジング主体３３間に挟むようにしてポンプハウジング３２がクランクケース半体１３ａに結合される。 The pump housing 32 includes a bowl-shaped housing main body 33 and a cover plate 34 that closes the opening of the housing main body 33. The pump housing 32 is sandwiched between the crankcase half 13 a and the housing main body 33. Coupled to the crankcase half 13a.
　前記インナーロータ３５はポンプハウジング３１に回転可能に支承されたポンプ軸３７に固定されており、このポンプ軸３７の前記ポンプハウジング３２からの突出部には被動ギヤ３８が固定される。而して前記被動ギヤ３８は、前記クランクシャフト１２に固定された駆動ギヤ３９に噛合されており、前記ポンプ軸３７には、クランクシャフト１２からの回転動力が入力される。 The inner rotor 35 is fixed to a pump shaft 37 rotatably supported on the pump housing 31, and a driven gear 38 is fixed to a projecting portion of the pump shaft 37 from the pump housing 32. Thus, the driven gear 38 is engaged with a drive gear 39 fixed to the crankshaft 12, and rotational power from the crankshaft 12 is input to the pump shaft 37.
　ところでクランクケース１３内の下部にはオイル貯留室４０が形成されており、このオイル貯留室４０内のオイルは、クランクケース半体１３ａの下部に装着されたオイルストレーナ４１を介してオイルポンプ３１で吸入される。ところでオイル貯留室４０の上方には、クランクシャフト１２からの回転動力をバランサ１９側に伝達するためのギヤ機構２０の駆動ギヤ２１が配置されており、この駆動ギヤ２１の回転によって生じた回転風圧で前記オイル貯留室４０内のオイルが攪拌されてしまうことがないようにするために、左側のクランクケース半体１３ｂには、オイル貯留室４０および駆動ギヤ２１間に配置される突部４２が一体に突設され、この突部４２は、前記駆動ギヤ２１を下方から囲むようにして円弧状に形成される。 By the way, an oil storage chamber 40 is formed in the lower portion of the crankcase 13, and the oil in the oil storage chamber 40 is transferred by an oil pump 31 via an oil strainer 41 mounted on the lower portion of the crankcase half 13a. Inhaled. Incidentally, a drive gear 21 of a gear mechanism 20 for transmitting rotational power from the crankshaft 12 to the balancer 19 side is disposed above the oil storage chamber 40, and the rotational wind pressure generated by the rotation of the drive gear 21. In order to prevent the oil in the oil storage chamber 40 from being agitated, the left crankcase half 13b has a protrusion 42 disposed between the oil storage chamber 40 and the drive gear 21. The protrusion 42 is formed in an arc shape so as to surround the drive gear 21 from below.
　前記オイルポンプ３１から吐出されるオイルは、右側のクランクケース半体１３ａの前面に取付けられるオイルフィルタ４３に、前記クランクケース半体１３ａに設けられた第１オイル通路４４を介して導かれ、オイルフィルタ４３で浄化されたオイルは、クランクケース半体１３ａに設けられた第２オイル通路４５を経てクラッチカバー２９に設けられた第３オイル通路４６に導かれる。 The oil discharged from the oil pump 31 is guided to an oil filter 43 attached to the front surface of the right crankcase half 13a through a first oil passage 44 provided in the crankcase half 13a. The oil purified by the filter 43 is guided to a third oil passage 46 provided in the clutch cover 29 through a second oil passage 45 provided in the crankcase half 13a.
　第３オイル通路４６は上下方向に延びるようにしてクラッチカバー２９に設けられており、第３オイル通路４６の中間部は、クランクシャフト１２に同軸に設けられた第４オイル通路４７に連通する。而して第４オイル通路４７に導入されたオイルは、コンロッド大端部４８およびクランクピン４９間に介装されるニードルベアリング５０の潤滑に用いられる。 The third oil passage 46 is provided in the clutch cover 29 so as to extend in the vertical direction, and an intermediate portion of the third oil passage 46 communicates with a fourth oil passage 47 provided coaxially with the crankshaft 12. Thus, the oil introduced into the fourth oil passage 47 is used for lubricating the needle bearing 50 interposed between the connecting rod large end portion 48 and the crank pin 49.
　図３を併せて参照して、第３オイル通路４６の上部は、シリンダブロック１４をクランクケース１３との間に挟むシリンダヘッド１５をクランクケース１３に結合する複数の通しボルト５１，５１…の１つと、シリンダブロック１４およびシリンダヘッド１５との間に形成される環状オイル通路５２に第１オリフィス５３を介して連通されるとともに、前記歯車変速機構２７のメインシャフト２５にオイルを導く第５オイル通路５５ならびに前記歯車変速機構２７のカウンタシャフト２６にオイルを導く第６オイル通路５６に第２オリフィス５４を介して連通される。而して第６オイル通路５６は、第３オイル通路４６との間の距離を、第５オイル通路５５および第３オイル通路４６間の距離よりも大きくして配置されている。 Referring also to FIG. 3, the upper portion of the third oil passage 46 is one of a plurality of through bolts 51, 51... That couple the cylinder head 15 sandwiching the cylinder block 14 between the crankcase 13 and the crankcase 13. A fifth oil passage that communicates with the annular oil passage 52 formed between the cylinder block 14 and the cylinder head 15 via the first orifice 53 and guides oil to the main shaft 25 of the gear transmission mechanism 27. 55 and a sixth oil passage 56 that guides oil to the countershaft 26 of the gear transmission mechanism 27 through a second orifice 54. Thus, the sixth oil passage 56 is arranged such that the distance from the third oil passage 46 is larger than the distance between the fifth oil passage 55 and the third oil passage 46.
　前記シリンダヘッド１５および前記ヘッドカバー１６には、一対のカムシャフト５７，５８を有する動弁装置５９が収容されており、前記環状オイル通路５２は、前記動弁装置５９側にオイルを導くようにしてシリンダヘッド１５に設けられる第７オイル通路６０に連通される。 The cylinder head 15 and the head cover 16 accommodate a valve gear 59 having a pair of camshafts 57 and 58, and the annular oil passage 52 guides oil to the valve gear 59 side. A seventh oil passage 60 provided in the cylinder head 15 communicates with the seventh oil passage 60.
　前記第３オイル通路４６と、第５および第６オイル通路５５，５６との間の連通構造が本発明に従って構成されるものであり、クラッチカバー２９が本発明の第１被結合部材に対応し、クランクケース半体１３ａが本発明の第２被結合部材に対応し、第３オイル通路４６が本発明の上流側オイル通路に対応し、第５オイル通路５５が本発明の第１下流側オイル通路に対応し、第６オイル通路５６が本発明の第２下流側オイル通路に対応する。 The communication structure between the third oil passage 46 and the fifth and sixth oil passages 55 and 56 is configured according to the present invention, and the clutch cover 29 corresponds to the first coupled member of the present invention. The crankcase half 13a corresponds to the second coupled member of the present invention, the third oil passage 46 corresponds to the upstream oil passage of the present invention, and the fifth oil passage 55 corresponds to the first downstream oil of the present invention. Corresponding to the passage, the sixth oil passage 56 corresponds to the second downstream oil passage of the present invention.
　図４において、クラッチカバー２９にはガスケット２８に当接する第１接合面６１が設けられ、クランクケース半体１３ａにはクラッチカバー２９と反対側から前記ガスケット２８に当接する第２接合面６２が設けられており、第３オイル通路４６は第１接合面６１に開口する。 In FIG. 4, the clutch cover 29 is provided with a first joint surface 61 that contacts the gasket 28, and the crankcase half 13a is provided with a second joint surface 62 that contacts the gasket 28 from the opposite side of the clutch cover 29. The third oil passage 46 is open to the first joint surface 61.
　而して第５および第６オイル通路５５，５６は、少なくとも一方がクランクケース半体１３ａに設けられるようにクラッチカバー２９およびクランクケース半体１３ａの一方または他方に設けられるものであり，この実施例では第５および第６オイル通路５５，５６の両方がクランクケース半体１３ａに設けられる。 Thus, the fifth and sixth oil passages 55 and 56 are provided in one or the other of the clutch cover 29 and the crankcase half 13a so that at least one is provided in the crankcase half 13a. In the example, both the fifth and sixth oil passages 55 and 56 are provided in the crankcase half 13a.
　第１接合面６１には、第３オイル通路４６を開口させる第１凹部６３と、第１凹部６３から第５オイル通路５５側に間隔をあけて配置される第２凹部６４とが設けられ、クランクケース半体１３ａには第１および第２凹部６３，６４に対応した第３凹部６５が設けられる。而してガスケット２８には第１凹部６３を第３凹部６５に通じさせる第１連通孔６６が設けられ、第３凹部６５および環状オイル通路５２間を結んでクランクケース半体１３ａに設けられる第７オイル通路６０の途中に第１オリフィス５３が介設される。 The first joint surface 61 is provided with a first recess 63 that opens the third oil passage 46, and a second recess 64 that is disposed at a distance from the first recess 63 toward the fifth oil passage 55, The crankcase half 13 a is provided with a third recess 65 corresponding to the first and second recesses 63 and 64. Thus, the gasket 28 is provided with a first communication hole 66 that allows the first recess 63 to communicate with the third recess 65, and the third recess 65 and the annular oil passage 52 are connected to each other in the first crankcase half 13 a. 7 A first orifice 53 is interposed in the middle of the oil passage 60.
　クラッチカバー２９およびクランクケース半体１３ａ間には、第３凹部６５および第２凹部６４間に介在するようにして第２オリフィス５４が挟持されており、第２凹部６４は第２オリフィス５４、第３凹部６５、第１連通孔６６および第１凹部６３を介して第３オイル通路４６に通じることになる。 A second orifice 54 is sandwiched between the clutch cover 29 and the crankcase half 13a so as to be interposed between the third recess 65 and the second recess 64, and the second recess 64 includes the second orifice 54, the second The third oil passage 46 is communicated with the third recess 65, the first communication hole 66, and the first recess 63.
　図５を併せて参照して、第１接合面６１には第２凹部６４に一端を通じさせて第６オイル通路５６に対応する部分まで延びる第１オイル溝６８が設けられ、第２接合面６２には、第２凹部６４に対応する部分から第５オイル通路５５に至る第２オイル溝６９が設けられ、前記ガスケット２８には第２凹部６４を第２オイル溝６９に通じさせる第２連通孔７０が設けられる。 Referring also to FIG. 5, the first joint surface 61 is provided with a first oil groove 68 extending through one end of the second recess 64 to a portion corresponding to the sixth oil passage 56, and the second joint surface 62. Is provided with a second oil groove 69 extending from a portion corresponding to the second recess 64 to the fifth oil passage 55, and the gasket 28 has a second communication hole through which the second recess 64 communicates with the second oil groove 69. 70 is provided.
　第５オイル通路５５は第２オイル溝６９に通じるようにしてクランクケース半体１３ａに設けられ、第６オイル通路５６は、ガスケット２８に設けられた第３連通孔７１を介して第１オイル溝６８に開口する。 The fifth oil passage 55 is provided in the crankcase half 13 a so as to communicate with the second oil groove 69, and the sixth oil passage 56 is connected to the first oil groove via the third communication hole 71 provided in the gasket 28. 68.
　しかも第２連通孔７０は、第３オイル通路４６から前記第５および第６オイル通路５５，５６に向けてのオイルの流通方向７２で前記第５オイル通路５５よりも上流側に前記流通方向７２に沿う下流端７０ａを配置するようにしてガスケット２８に設けられ、第１および第２オイル溝６８，６９間を連通することになる。 In addition, the second communication hole 70 is in the flow direction 72 of oil in the flow direction 72 of oil from the third oil passage 46 toward the fifth and sixth oil passages 55, 56 and upstream of the fifth oil passage 55. The downstream end 70a is disposed on the gasket 28 so as to communicate with the first and second oil grooves 68 and 69.
　次にこの第１実施例の作用について説明すると、第３オイル通路４６からのオイルは第１凹部６３、第１連通孔６６、第３凹部６５およびオリフィス５４を介して第２凹部６４に至り、この第２凹部６４から第１オイル溝６８内を流通して第６オイル通路５６に流通するとともにガスケット２８の第２連通孔７０を介して第２オイル溝６９内に入り、第２オイル溝６９内を第５オイル通路５５側に流通することになり、オイルの流れ方向が大きく変わることはないので、第５および第６オイル通路５５，５６の一方のオイル流通量が他方に比べて著しく少なくなることはなく、第５および第６オイル通路５５，５６にオイルを均等に分配し易くなるので、レイアウトの自由度が増大する。 Next, the operation of the first embodiment will be described. Oil from the third oil passage 46 reaches the second recess 64 via the first recess 63, the first communication hole 66, the third recess 65, and the orifice 54. From the second recess 64, the gas flows through the first oil groove 68 to the sixth oil passage 56 and enters the second oil groove 69 through the second communication hole 70 of the gasket 28. Since the oil flows in the fifth oil passage 55 and the oil flow direction does not change greatly, the amount of oil in one of the fifth and sixth oil passages 55 and 56 is significantly smaller than the other. In other words, it becomes easy to evenly distribute the oil to the fifth and sixth oil passages 55 and 56, and the degree of freedom in layout increases.
　図６は本発明の第２実施例を示すものであり，第１接合面７４を有する第１被結合部材７５と、第２接合面７６を有する第２被結合部材７７とが両接合面７４，７６間にガスケット７８を挟んで相互に結合され、第１接合面７４に開口する上流側オイル通路７９が第１被結合部材７５に設けられ、第１接合面７４に開口して前記上流側オイル通路７９に通じる第１下流側オイル通路８０が第１被結合部材７５に設けられ，上流側オイル通路７９との間の距離を第１下流側オイル通路８０および上流側オイル通路７９間の距離よりも大きくした第２下流側オイル通路８１が第２接合面７６に開口するようにして第２被結合部材７７に設けられる。 FIG. 6 shows a second embodiment of the present invention. A first coupled member 75 having a first joining surface 74 and a second coupled member 77 having a second joining surface 76 are both joined surfaces 74. , 76 are connected to each other with a gasket 78 interposed therebetween, and an upstream oil passage 79 that opens to the first joint surface 74 is provided in the first joined member 75, and opens to the first joint surface 74 to open the upstream side. A first downstream oil passage 80 communicating with the oil passage 79 is provided in the first coupled member 75, and a distance between the upstream oil passage 79 and a distance between the first downstream oil passage 80 and the upstream oil passage 79 is set. A larger second downstream oil passage 81 is provided in the second coupled member 77 so as to open to the second joint surface 76.
　而して第１接合面７４には、上流側オイル通路７９を開口させた第１オイル溝８２が設けられ、第２接合面７６には少なくとも一部を第１オイル溝８２に向い合わせる第２オイル溝８３が設けられ、前記上流側オイル通路７９から第１および第２下流側オイル通路８０，８１に向けてのオイルの流通方向８４で前記第１上流側オイル通路８０よりも上流側に前記流通方向８４に沿う下流端８５ａを配置して第１および第２オイル溝８２，８３間を連通する連通孔８５が前記ガスケット７８に設けられ、第１下流側オイル通路８０が第１オイル溝８２に開口され、第２下流側オイル通路８１が第２オイル溝８３に開口される。 Thus, the first joint surface 74 is provided with a first oil groove 82 having an upstream oil passage 79 opened, and the second joint surface 76 is at least partially facing the first oil groove 82. An oil groove 83 is provided, and the upstream side of the first upstream oil passage 80 in the oil flow direction 84 from the upstream oil passage 79 toward the first and second downstream oil passages 80, 81. A communication hole 85 is provided in the gasket 78 so as to communicate with the first and second oil grooves 82 and 83 by arranging a downstream end 85 a along the flow direction 84, and the first downstream oil passage 80 is formed in the first oil groove 82. The second downstream oil passage 81 is opened to the second oil groove 83.
　この第２実施例によっても，上記第１実施例と同様の効果を奏することができる。すなわち上流側オイル通路７９からのオイルは、第１オイル溝８２内を流通して第１下流側オイル通路８０に流通するとともにガスケット７８の連通孔８５を介して第２オイル溝８３内に入り、第２オイル溝８３内を第２下流側オイル通路８１側に流通することになり、オイルの流れ方向が大きく変わることはないので、第１および第２下流側オイル通路８０，８１の一方のオイル流通量が他方に比べて著しく少なくなることはなく、第１および第２下流側オイル通路８０，８１にオイルを均等に分配し易くなるので、レイアウトの自由度が増大する。 Also in the second embodiment, the same effects as in the first embodiment can be obtained. That is, oil from the upstream oil passage 79 flows through the first oil groove 82 and flows into the first downstream oil passage 80 and enters the second oil groove 83 through the communication hole 85 of the gasket 78. Since the oil flows in the second oil groove 83 toward the second downstream oil passage 81 and the oil flow direction does not change significantly, the oil in one of the first and second downstream oil passages 80 and 81 is not changed. The flow rate is not significantly reduced compared to the other, and the oil is easily evenly distributed to the first and second downstream oil passages 80 and 81, so that the degree of freedom in layout increases.
　以上、本発明の実施例を説明したが、本発明は上記実施例に限定されるものではなく、その要旨を逸脱することなく種々の設計変更を行うことが可能である。 The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist thereof.

Claims (1)

  1. 　第１接合面（６１，７４）を有する第１被結合部材（２９，７５）と、第２接合面（６２，７６）を有する第２被結合部材（１３ａ，７７）とが第１および第２接合面（６１，７４；６２，７６）間にガスケット（２８，７８）を挟んで相互に結合され、第１接合面（６１，７４）に開口する上流側オイル通路（４６，７９）が第１被結合部材（２９，７５）に設けられ、第１および第２接合面（６１，７４；６２，７６）の一方または他方に開口して前記上流側オイル通路（４６，７９）に通じる第１下流側オイル通路（５５，８０）および第２下流側オイル通路（５６，８１）が、第２下流側オイル通路（５６，８１）および上流側オイル通路（４６，７９）間の距離を第１下流側オイル通路（５５，８０）および上流側オイル通路（４６，７９）間の距離よりも大きくして、第１および第２下流側オイル通路（５５，８０；５６，８１）の少なくとも一方が第２被結合部材（１３ａ，７７）に設けられるようにして第１および第２被結合部材（２９，７５；１３ａ，７７）の一方または他方に設けられるオイル通路構造において、第１接合面（６１，７４）には、上流側オイル通路（４６，７９）を連通させた第１オイル溝（６８，８２）が設けられ、第２接合面（６２，７６）には少なくとも一部を第１オイル溝（６８，８２）に向い合わせる第２オイル溝（６９，８３）が設けられ、前記上流側オイル通路（４６，７９）から前記第１および第２下流側オイル通路（５５，８０；５６，８１）に向けてのオイルの流通方向で前記第１下流側オイル通路（５５，８０）よりも上流側に前記流通方向に沿う下流端（７０ａ，８５ａ）を配置して第１および第２オイル溝（６８，８２；６９，８３）間を連通する連通孔（７０，８５）が前記ガスケット（２８，７８）に設けられ、第１下流側オイル通路（５５，８０）が第１および第２オイル溝（６８，８２；６９，８３）の一方に開口され、第２下流側オイル通路（５６，８１）が第１および第２オイル溝（６８，８２；６９，８３）の他方に開口されることを特徴とするオイル通路構造。 A first coupled member (29, 75) having a first joining surface (61, 74) and a second coupled member (13a, 77) having a second joining surface (62, 76) are first and first. An upstream oil passage (46, 79) that is joined to each other with a gasket (28, 78) sandwiched between two joining surfaces (61, 74; 62, 76) and opens to the first joining surface (61, 74). It is provided in the first coupled member (29, 75), opens to one or the other of the first and second joint surfaces (61, 74; 62, 76), and communicates with the upstream oil passage (46, 79). The first downstream oil passage (55, 80) and the second downstream oil passage (56, 81) have a distance between the second downstream oil passage (56, 81) and the upstream oil passage (46, 79). The first downstream oil passage (55, 80) and the upstream oil passage ( 6, 79) so that at least one of the first and second downstream oil passages (55, 80; 56, 81) is provided in the second coupled member (13a, 77). In the oil passage structure provided in one or the other of the first and second coupled members (29, 75; 13a, 77), the upstream oil passage (46, 79) is provided on the first joint surface (61, 74). ) Communicated with each other, and a second oil groove (68, 82) that at least partially faces the first oil groove (68, 82) is provided on the second joint surface (62, 76). 69, 83), and the first oil flow direction from the upstream oil passage (46, 79) toward the first and second downstream oil passages (55, 80; 56, 81). Downstream oil passage (55, 80) Further, the downstream end (70a, 85a) along the flow direction is arranged on the upstream side, and the communication hole (70, 85) communicating between the first and second oil grooves (68, 82; 69, 83) is provided in the gasket. (28, 78), the first downstream oil passage (55, 80) is opened in one of the first and second oil grooves (68, 82; 69, 83), and the second downstream oil passage ( 56, 81) is opened to the other of the first and second oil grooves (68, 82; 69, 83).
PCT/JP2009/053420 2008-03-31 2009-02-25 Oil path structure WO2009122826A1 (en)

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CN104564784B (en) * 2014-12-26 2018-01-19 珠海格力电器股份有限公司 Pressure balance structure for oil tank and air suction port of centrifugal compressor

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