WO2015190361A1 - Supercharger - Google Patents

Supercharger Download PDF

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Publication number
WO2015190361A1
WO2015190361A1 PCT/JP2015/066004 JP2015066004W WO2015190361A1 WO 2015190361 A1 WO2015190361 A1 WO 2015190361A1 JP 2015066004 W JP2015066004 W JP 2015066004W WO 2015190361 A1 WO2015190361 A1 WO 2015190361A1
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WO
WIPO (PCT)
Prior art keywords
shaft
housing
hole
link
main body
Prior art date
Application number
PCT/JP2015/066004
Other languages
French (fr)
Japanese (ja)
Inventor
祐介 磯野
市川　清道
森　淳
小林　祐二
岩田　和明
Original Assignee
株式会社Ihi
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.)
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Publication date
Application filed by 株式会社Ihi filed Critical 株式会社Ihi
Publication of WO2015190361A1 publication Critical patent/WO2015190361A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a supercharger including a valve that opens and closes a flow path that opens in an internal space of a housing.
  • a turbocharger in which a rotating shaft having a turbine impeller provided at one end and a compressor impeller provided at the other end is rotatably held by a bearing housing.
  • a supercharger is connected to the engine, the turbine impeller is rotated by exhaust gas discharged from the engine, and the compressor impeller is rotated via the rotating shaft by the rotation of the turbine impeller.
  • the supercharger compresses air and sends it to the engine as the compressor impeller rotates.
  • the supercharger described in Patent Document 1 includes a bypass flow path.
  • the bypass passage allows a part of the exhaust gas to flow from the turbine housing to the downstream of the turbine impeller without passing through the turbine scroll passage leading to the turbine impeller. That is, a part of the exhaust gas passes through the bypass flow path, thereby bypassing the turbine scroll flow path and the turbine impeller.
  • This bypass channel is opened and closed by a valve.
  • the valve is provided in the turbine housing and is connected to the shaft.
  • the shaft is rotatably supported by a bearing portion installed in the turbine housing.
  • the bearing portion is installed in the turbine housing so as to penetrate inside and outside of the turbine housing.
  • An object of the present invention is to provide a supercharger capable of suppressing vibrations of a shaft for operating a valve and abnormal noise due to vibrations.
  • One aspect of the present invention is a supercharger, a housing having an internal space formed therein, a bearing hole provided in the housing and penetrating between the internal space of the housing and the outside of the housing, and one end of the housing And a shaft that is rotatably supported by the bearing hole with the other end positioned outside the housing, and a shaft that is fixed to the shaft and that opens to the internal space as the shaft rotates.
  • a main body portion of the link member includes at least a thick portion provided between the link hole and the portion to which the shaft is fixed.
  • FIG. 1 is a schematic cross-sectional view of a supercharger according to an embodiment of the present invention.
  • 2A and 2B are external views of a turbine housing according to an embodiment of the present invention.
  • FIG. 2A is a view of a discharge port of the turbine housing as viewed from the front, and
  • FIG. ) Is a side view of the turbine housing.
  • 3 (a) to 3 (c) are views for explaining a mounting plate according to an embodiment of the present invention.
  • FIG. 3 (a) is a perspective view of the mounting plate
  • FIG. FIG. 3C is a side view of the plate
  • FIG. 3C is a top view of the mounting plate.
  • FIG. 4 is a view for explaining the connection structure of the valve to the mounting plate.
  • FIG. 5 (a) and 5 (b) are diagrams for explaining the structure of the link plate according to the embodiment of the present invention.
  • FIG. 5 (a) is a diagram illustrating V (a)-in FIG. Sectional drawing along the V (a) line
  • FIG.5 (b) is a V (b) arrow line view in Fig.5 (a).
  • FIG. 1 is a schematic sectional view of the supercharger C.
  • the arrow L shown in FIG. 1 will be described as a direction indicating the left side of the supercharger C
  • the arrow R will be described as a direction indicating the right side of the supercharger C.
  • the supercharger C includes a supercharger main body 1.
  • the turbocharger body 1 includes a bearing housing 2, a turbine housing 4 connected to the left side of the bearing housing 2 by a fastening mechanism 3, and a compressor housing 6 connected to the right side of the bearing housing 2 by fastening bolts 5. Have. These are integrated.
  • a protrusion 2 a is provided on the outer peripheral surface of the bearing housing 2 in the vicinity of the turbine housing 4.
  • the protrusion 2 a protrudes in the radial direction of the bearing housing 2.
  • a projection 4 a is provided on the outer peripheral surface of the turbine housing 4 in the vicinity of the bearing housing 2.
  • the protrusion 4 a protrudes in the radial direction of the turbine housing 4.
  • the bearing housing 2 and the turbine housing 4 are fixed by fastening the protrusions 2 a and 4 a with the fastening mechanism 3.
  • the fastening mechanism 3 includes a fastening band (for example, G coupling) that holds the protrusions 2a and 4a.
  • the bearing housing 2 is formed with a through hole 2b that penetrates the supercharger C in the left-right direction.
  • a rotary shaft 7 is rotatably supported in the through hole 2b.
  • a turbine impeller 8 is integrally fixed to the left end portion of the rotating shaft 7.
  • the turbine impeller 8 is rotatably accommodated in the turbine housing 4.
  • a compressor impeller 9 is integrally fixed to the right end portion of the rotating shaft 7.
  • the compressor impeller 9 is rotatably accommodated in the compressor housing 6.
  • An air inlet 10 is formed in the compressor housing 6.
  • the intake port 10 opens to the right side of the supercharger C and is connected to an air cleaner (not shown).
  • the bearing housing 2 and the compressor housing 6 are connected by the fastening bolt 5, the opposing surfaces of the two housings 2 and 6 form a diffuser passage 11 that compresses and pressurizes air.
  • the diffuser flow path 11 is formed in an annular shape from the radially inner side to the outer side of the rotating shaft 7 (compressor impeller 9). The diffuser flow path 11 communicates with the intake port 10 via the compressor impeller 9 on the radially inner side.
  • the compressor housing 6 is provided with a compressor scroll passage 12.
  • the compressor scroll passage 12 is formed in an annular shape, and is positioned on the outer side in the radial direction of the rotating shaft 7 (compressor impeller 9) than the diffuser passage 11.
  • the compressor scroll passage 12 communicates with an intake port (not shown) of the engine. Further, the compressor scroll passage 12 communicates with the diffuser passage 11. Therefore, when the compressor impeller 9 rotates, air is sucked into the compressor housing 6 from the intake port 10, and is boosted by the diffuser flow path 11 and the compressor scroll flow path 12 and guided to the intake port of the engine.
  • a discharge port 13 is formed in the turbine housing 4.
  • the discharge port 13 opens to the left side of the supercharger C and is connected to an exhaust gas purification device (not shown).
  • the turbine housing 4 has an internal space S that includes the discharge port 13 as one end. In the internal space S, a later-described valve 16 is arranged.
  • the turbine housing 4 is provided with an internal flow path 14 and a turbine scroll flow path 15.
  • the turbine scroll flow path 15 is formed in an annular shape and is located on the radially outer side of the rotary shaft 7 (turbine impeller 8) than the internal flow path 14.
  • the turbine scroll passage 15 communicates with a gas inlet 17 (see FIG. 2B) through which exhaust gas discharged from an engine exhaust manifold (not shown) is guided.
  • the turbine scroll flow path 15 communicates with the internal flow path 14. Accordingly, the exhaust gas is guided from the gas inlet 17 to the turbine scroll flow path 15 and is guided to the discharge port 13 via the internal flow path 14, the turbine impeller 8, and the internal space S. In this distribution process, the exhaust gas rotates the turbine impeller 8. The rotational force of the turbine impeller 8 is transmitted to the compressor impeller 9 via the rotating shaft 7, whereby the compressor impeller 9 rotates. The air is boosted by the rotational force of the compressor impeller 9 and guided to the intake port of the engine.
  • FIGS. 2A and 2B are external views of the turbine housing 4.
  • FIG. 2A is a view of the discharge port 13 of the turbine housing 4 as viewed from the front.
  • FIG. 2B is a side view of the turbine housing 4.
  • the gas inflow port 17 is open to the lower side of the turbine housing 4.
  • a flow path communicating from the gas inlet 17 to the turbine scroll flow path 15 is branched upstream of the turbine scroll flow path 15.
  • an outlet end 18 a of a bypass flow path 18 (flow path) that is a branched flow path is formed on the wall surface (inner wall) of the turbine housing 4 that forms the internal space S including the discharge port 13. Is formed.
  • Exhaust gas flows from the gas inlet 17, and a part of the exhaust gas can flow out to the internal space S downstream of the turbine impeller 8 via the bypass flow path 18. That is, part of the exhaust gas can bypass the turbine impeller 8 and the turbine scroll passage 15.
  • the valve 16 is configured by a valve body having an outer diameter larger than the inner diameter of the outlet end 18a.
  • the valve 16 closes the bypass flow path 18 by contacting a seat surface 18b formed around the outlet end 18a of the bypass flow path 18, and opens the bypass flow path 18 by separating from the seat surface 18b.
  • the actuator rod 19 shown in FIG. 2B is arranged outside the turbine housing 4. One end of the actuator rod 19 is fixed to an actuator (not shown), and the actuator rod 19 is operated in the axial direction by the power of the actuator. The other end of the actuator rod 19 is fixed to a pin rod 21 (rod) protruding in a direction orthogonal to the axial direction of the actuator rod 19.
  • the link plate 20 (link member) is constituted by a plate member and is provided outside the turbine housing 4.
  • a link hole 20 a is formed at one end of the link plate 20.
  • a pin rod 21 is rotatably inserted (supported) into the link hole 20a of the link plate 20. That is, the pin rod 21 is fixed to the actuator rod 19 and is rotatably supported by the link plate 20.
  • the turbine housing 4 has a housing hole 4b.
  • the housing hole 4 b penetrates between the outside of the turbine housing 4 (the actuator rod 19 side of the turbine housing 4) and the internal space S of the turbine housing 4.
  • a bearing portion 22 is press-fitted into the housing hole 4b.
  • the bearing portion 22 is composed of a cylindrical member.
  • the bearing portion 22 has a bearing hole 22a that penetrates from one end to the other end.
  • the shaft 23 is inserted through the bearing hole 22a.
  • One end of the bearing portion 22 is a protruding portion 22 b that protrudes from the inner wall of the turbine housing 4 that forms the inner space S.
  • the other end of the bearing portion 22 protrudes outside the turbine housing 4. That is, one end of the bearing portion 22 is located in the internal space S, and the other end of the bearing portion 22 is located outside the turbine housing 4.
  • one end of the bearing portion 22 protrudes into the internal space S of the turbine housing 4 and the other end of the bearing portion 22 protrudes outside the turbine housing 4. That is, the bearing hole 22 a of the bearing portion 22 penetrates between the inside of the turbine housing 4 (internal space S) and the outside of the turbine housing 4.
  • the shaft 23 is inserted into the bearing hole 22 a of the bearing portion 22 and is rotatably supported by the bearing portion 22.
  • One end of the shaft 23 protrudes from the bearing portion 22 toward the internal space S of the turbine housing 4. That is, the shaft 23 is rotatably supported by the bearing hole 22a with one end thereof positioned in the internal space S. Further, the other end of the shaft 23 protrudes outside the turbine housing 4 from the turbine housing 4 and the bearing portion 22.
  • the other end of the shaft 23 is welded to the link plate 20 while being inserted into the fixing hole 20 b of the link plate 20. If the link hole 20a is provided on one end side of the link plate 20, the fixing hole 20b is provided on the other end side (generally lower side in FIG. 2B) of the link plate 20.
  • the mounting plate 24 is constituted by a plate member, and connects the valve 16 and the shaft 23.
  • a valve 16 is provided on one end side of the mounting plate 24, and a shaft 23 is welded to the other end side of the mounting plate 24.
  • the connection structure between the mounting plate 24 and the valve 16 and the connection structure between the mounting plate 24 and the shaft 23 will be described in detail later.
  • the valve 16 is rotated together with the shaft 23 in the rotation direction of the shaft 23 by the mounting plate 24.
  • the pin rod 21 is moved in the direction orthogonal to the axis of the pin rod 21 by the power of the actuator (the direction indicated by the arrows a and c in FIG. 2B), the operation of the link plate 20 (FIG. 2B).
  • the shaft 23 and the valve 16 rotate together.
  • the valve 16 opens and closes the outlet end 18 a of the bypass flow path 18.
  • FIGS. 3A to 3C are diagrams for explaining the mounting plate 24.
  • FIG. 3A is a perspective view of the mounting plate 24.
  • FIG. 3B is a side view of the mounting plate 24.
  • FIG. 3C is a top view of the mounting plate 24.
  • the mounting plate 24 includes a main body 24a and a cylindrical cylindrical portion 24b formed at one end of the main body 24a.
  • the cylindrical portion 24b is provided with an insertion hole 24c, and the shaft 23 is inserted into the insertion hole 24c.
  • An exposure hole 24d is formed in the cylindrical portion 24b.
  • the exposure hole 24d extends in the radial direction of the insertion hole 24c and penetrates the insertion hole 24c from the outside of the cylindrical portion 24b.
  • the cylindrical portion 24 b of the mounting plate 24 is welded to the shaft 23 through the exposure hole 24 d.
  • a main body hole 24e is provided in the main body 24a of the mounting plate 24.
  • the main body hole 24e passes through the main body portion 24a in a direction orthogonal to the central axis direction of the insertion hole 24c.
  • the mounting plate 24 and the valve 16 are connected through the main body hole 24e.
  • FIG. 4 is a view for explaining the connection structure of the valve 16 to the mounting plate 24, and is a view of the mounting plate 24 as viewed from the side in a state where the mounting plate 24 and the valve 16 are connected.
  • a protrusion 16 b is formed on the main body 16 a of the valve 16.
  • the protrusion 16b protrudes in a direction perpendicular to the surface direction of the contact surface 16c from the opposite side of the contact surface 16c that contacts the sheet surface 18b.
  • the protrusion 16b may be formed integrally with the main body 16a, or the protrusion 16b of another member may be fixed to the main body 16a by welding or the like.
  • the protruding portion 16 b of the valve 16 is inserted into the main body hole 24 e and the washer 25 of the mounting plate 24. Thereafter, the mounting plate 24 and the valve 16 are connected by pressurizing and deforming the tip of the protruding portion 16 b protruding from the washer 25.
  • the link plate 20 of the present embodiment is provided with a structure for suppressing such vibration.
  • FIG. 5A and FIG. 5B are diagrams for explaining the structure of the link plate 20.
  • FIG. 5A shows a cross section taken along line V (a) -V (a) in FIG. FIG.5 (b) is a V (b) arrow line view in Fig.5 (a).
  • FIG. 5A shows the link plate 20, the pin rod 21, the shaft 23, the bearing portion 22, and a part of the turbine housing 4.
  • FIG. 5B shows the link plate 20 and Only the shaft 23 is shown.
  • the main body portion 20c of the link plate 20 is provided with a link hole 20a and a fixing hole 20b.
  • Each of the link hole 20a and the fixing hole 20b passes through the main body 20c in parallel with the axial direction of the shaft 23.
  • the end of the shaft 23 protrudes to the outside of the turbine housing 4 (on the right side in FIG. 5A).
  • a small diameter portion 23a is formed at this end.
  • the outer diameter of the small diameter portion 23 a is smaller than the outer diameter of the portion of the shaft 23 inserted through the bearing portion 22.
  • the small diameter portion 23a is inserted through a fixing hole 20b formed in the main body portion 20c of the link plate 20, and is fixed to the main body portion 20c (link plate 20).
  • the pin rod 21 is rotatably inserted into the link hole 20a. At this time, the pin rod 21 is disposed with its axis parallel to the axis of the shaft 23.
  • the main body portion 20c of the link plate 20 is provided with a thick portion 20d.
  • the thick portion 20d is formed in a portion of the main body portion 20c of the link plate 20 excluding a portion where the link hole 20a is opened.
  • all the parts other than the predetermined range around the link hole 20a in the main body part 20c are formed as the thick part 20d.
  • the thick part 20d is thicker in the axial direction of the shaft 23 or the pin rod 21 (left and right in FIG. 5A) than the part where the link hole 20a is formed (the part where the link hole 20a opens) 20e. .
  • the weight of the link plate 20 increases, and vibrations of the link plate 20 itself, the shaft 23 fixed to the link plate 20, the mounting plate 24, the valve 16, and the like are suppressed. As a result, abnormal noise associated with these vibrations can be suppressed.
  • the link hole 20a becomes longer in the axial direction, and the sliding resistance between the link hole 20a and the pin rod 21 tends to increase.
  • the vibration suppression effect by the increase in a weight can be heightened further by enlarging the link board 20 also in the radial direction of the shaft 23 in the range which does not interfere with another member.
  • the thick portion 20d is formed over all portions outside the predetermined range around the link hole 20a.
  • the thick portion 20d only needs to be formed at least between the fixing hole 20b (the fixing portion of the shaft 23 in the main body portion 20c of the link plate 20) and the link hole 20a.
  • the weight of the link plate 20 can be further increased, and the vibration suppressing effect can be further enhanced.
  • the thick portion 20d may be formed over the entire link plate 20 up to the periphery of the link hole 20a.
  • the link hole 20a is not an essential configuration.
  • the end surface on the other end side in the axial direction of the shaft 23 may be in contact with the link plate 20 and the contact portion may be fixed by welding or the like.
  • the link plate 20 for operating the valve 16 that opens and closes the outlet end 18a of the bypass flow path 18 has been described, but the present invention may be applied to a link plate for operating other valves.
  • a link plate provided in the compressor housing 6 for opening and closing a bypass passage that bypasses the intake passage may be used.
  • a link for adjusting the flow rate of the exhaust gas flowing into one turbine scroll flow path and the exhaust gas flowing into the other turbine scroll flow path It may be a plate.
  • a multi-stage supercharger in which a low-pressure stage and a high-pressure stage supercharger are connected in series to the engine exhaust manifold, or a parallel type in which multiple superchargers are connected in parallel to the engine exhaust manifold.
  • the present invention may be applied to a link plate for adjusting the flow rate of exhaust gas flowing into the turbine housing of the supercharger.
  • the configuration in which the housing hole 4b is provided in the turbine housing 4 and the bearing portion 22 is inserted into the housing hole 4b has been described.
  • the shaft 23 may be directly inserted into the housing hole 4 b without providing the bearing 22, and the housing hole 4 b may function as the bearing 22.
  • the present invention can be used for a supercharger including a valve that opens and closes a flow path that opens in an internal space of a housing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

　A supercharger is provided with a shaft (23) rotatably inserted in a bearing hole (22e) of a turbine housing (4), a link plate (20) to which the shaft (23) is secured, and a pin rod (21) rotatably inserted through a link hole (20a) formed in a main body part (20c) of the link plate (20). When the pin rod (21) is moved by an actuator, the shaft (23) and a valve (16) rotate integrally via the link plate (20) to open or close the flow channel. The main body part (20c) includes a thick part (20d) provided at least between the link hole (20a) and a securing part (securing hole (20b)) of the shaft (23). The thick part (20d) is thicker than a portion (20e) where the link hole (20a) opens.

Description

過給機Turbocharger
　本発明は、ハウジングの内部空間に開口する流路を開閉するバルブを備える過給機に関する。 The present invention relates to a supercharger including a valve that opens and closes a flow path that opens in an internal space of a housing.
　従来、一端にタービンインペラが設けられ他端にコンプレッサインペラが設けられた回転軸が、ベアリングハウジングに回転自在に保持された過給機が知られている。こうした過給機をエンジンに接続し、エンジンから排出される排気ガスによってタービンインペラを回転させるとともに、このタービンインペラの回転によって、回転軸を介してコンプレッサインペラを回転させる。こうして、過給機は、コンプレッサインペラの回転に伴い空気を圧縮してエンジンに送出する。 2. Description of the Related Art Conventionally, a turbocharger is known in which a rotating shaft having a turbine impeller provided at one end and a compressor impeller provided at the other end is rotatably held by a bearing housing. Such a supercharger is connected to the engine, the turbine impeller is rotated by exhaust gas discharged from the engine, and the compressor impeller is rotated via the rotating shaft by the rotation of the turbine impeller. Thus, the supercharger compresses air and sends it to the engine as the compressor impeller rotates.
　特許文献１に記載の過給機はバイパス流路を備えている。バイパス流路は、排気ガスの一部を、タービンインペラに通じるタービンスクロール流路を介さずに、タービンハウジングからタービンインペラの下流に流す。すなわち、排気ガスの一部はバイパス流路を経由することで、タービンスクロール流路およびタービンインペラをバイパスする。このバイパス流路は、バルブによって開閉される。バルブはタービンハウジング内に設けられ、シャフトに連結されている。シャフトは、タービンハウジングに設置された軸受部によって回転可能に支持されている。軸受部は、タービンハウジングの内外を貫通するようにタービンハウジングに設置されている。このように、アクチュエータの動力によってシャフトが回転すると、シャフトと一体となってバルブが作動し、このバルブの作動によってバイパス流路が開閉される。 The supercharger described in Patent Document 1 includes a bypass flow path. The bypass passage allows a part of the exhaust gas to flow from the turbine housing to the downstream of the turbine impeller without passing through the turbine scroll passage leading to the turbine impeller. That is, a part of the exhaust gas passes through the bypass flow path, thereby bypassing the turbine scroll flow path and the turbine impeller. This bypass channel is opened and closed by a valve. The valve is provided in the turbine housing and is connected to the shaft. The shaft is rotatably supported by a bearing portion installed in the turbine housing. The bearing portion is installed in the turbine housing so as to penetrate inside and outside of the turbine housing. As described above, when the shaft is rotated by the power of the actuator, the valve is operated integrally with the shaft, and the bypass flow path is opened and closed by the operation of the valve.
特表２０１３－５１２３７３号公報JP 2013-512373 A
　上記のように、過給機のハウジングに軸受部が設けられ、シャフトが軸受部によって回転可能に支持されている場合、排気脈動などの影響により、シャフトがその軸方向に振動し、その結果、騒音が生じる可能性がある。 As described above, when the bearing portion is provided in the housing of the turbocharger and the shaft is rotatably supported by the bearing portion, the shaft vibrates in the axial direction due to the influence of exhaust pulsation, and as a result, Noise may occur.
　本発明の目的は、バルブを作動させるシャフトなどの振動および振動による異音を抑制することが可能な過給機を提供することである。 An object of the present invention is to provide a supercharger capable of suppressing vibrations of a shaft for operating a valve and abnormal noise due to vibrations.
　本発明の一態様は過給機であって、内部空間が内部に形成されたハウジングと、ハウジングに設けられ、ハウジングの内部空間とハウジングの外部との間を貫通する軸受孔と、一端がハウジングの内部に位置し、他端がハウジングの外に位置した状態で軸受孔に回転自在に支持されるシャフトと、シャフトに固定され、シャフトの回転に伴って内部空間に開口する流路を開閉するバルブと、ハウジングの外に設けられ、リンク孔が設けられると共にシャフトに固定された本体部を有するリンク部材と、軸心をシャフトの軸心と平行にして設けられ、リンク孔に回転自在に支持されるロッドと、を備え、リンク部材の本体部は、少なくともリンク孔とシャフトが固定された部分との間に設けられる肉厚部を含み、肉厚部は、シャフト或いはロッドの軸方向における厚みが、本体部においてリンク孔が開口する部分よりも大きく、ロッドがアクチュエータの動力によって移動すると、リンク部材の作動によりシャフトおよびバルブが一体回転して流路が開閉されることを要旨とする。 One aspect of the present invention is a supercharger, a housing having an internal space formed therein, a bearing hole provided in the housing and penetrating between the internal space of the housing and the outside of the housing, and one end of the housing And a shaft that is rotatably supported by the bearing hole with the other end positioned outside the housing, and a shaft that is fixed to the shaft and that opens to the internal space as the shaft rotates. A valve, a link member provided outside the housing, having a link hole and having a main body fixed to the shaft, and having an axis parallel to the shaft axis and rotatably supported by the link hole And a main body portion of the link member includes at least a thick portion provided between the link hole and the portion to which the shaft is fixed. When the rod is thicker than the portion where the link hole is opened in the main body, and the rod is moved by the power of the actuator, the shaft and valve are integrally rotated by the operation of the link member to open and close the flow path. Is the gist.
　本発明によれば、バルブを作動させるシャフトなどの振動および振動による異音を抑制することが可能となる。 According to the present invention, it is possible to suppress the vibration of the shaft for operating the valve and the abnormal noise due to the vibration.
図１は、本発明の一実施形態に係る過給機の概略断面図である。FIG. 1 is a schematic cross-sectional view of a supercharger according to an embodiment of the present invention. 図２（ａ）及び図２（ｂ）は本発明の一実施形態に係るタービンハウジングの外観図であり、図２（ａ）はタービンハウジングの吐出口を正面から見た図、図２（ｂ）はタービンハウジングの側面図である。2A and 2B are external views of a turbine housing according to an embodiment of the present invention. FIG. 2A is a view of a discharge port of the turbine housing as viewed from the front, and FIG. ) Is a side view of the turbine housing. 図３（ａ）～図３（ｃ）は本発明の一実施形態に係る取付板を説明するための図であり、図３（ａ）は取付板の斜視図、図３（ｂ）は取付板の側面図、図３（ｃ）は取付板の上面図である。3 (a) to 3 (c) are views for explaining a mounting plate according to an embodiment of the present invention. FIG. 3 (a) is a perspective view of the mounting plate, and FIG. FIG. 3C is a side view of the plate, and FIG. 3C is a top view of the mounting plate. 図４は、取付板へのバルブの連結構造を説明するための図である。FIG. 4 is a view for explaining the connection structure of the valve to the mounting plate. 図５（ａ）及び図５（ｂ）は本発明の一実施形態に係るリンク板の構造を説明するための図であり、図５（ａ）は図２（ｂ）におけるＶ（ａ）－Ｖ（ａ）線に沿った断面図、図５（ｂ）は図５（ａ）におけるＶ（ｂ）矢視図である。5 (a) and 5 (b) are diagrams for explaining the structure of the link plate according to the embodiment of the present invention. FIG. 5 (a) is a diagram illustrating V (a)-in FIG. Sectional drawing along the V (a) line, FIG.5 (b) is a V (b) arrow line view in Fig.5 (a).
　以下に添付図面を参照しながら、本発明の一実施形態について詳細に説明する。かかる実施形態に示す寸法、材料、その他具体的な数値等は、発明の理解を容易とするための例示にすぎず、特に断る場合を除き、本発明を限定するものではない。なお、本明細書および図面において、実質的に同一の機能、構成を有する要素については、同一の符号を付することにより重複説明を省略し、また本発明に直接関係のない要素は図示を省略する。 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.
　図１は、過給機Ｃの概略断面図である。以下では、図１に示す矢印Ｌを過給機Ｃの左側を示す方向とし、矢印Ｒを過給機Ｃの右側を示す方向として説明する。図１に示すように、過給機Ｃは、過給機本体１を備える。この過給機本体１は、ベアリングハウジング２と、ベアリングハウジング２の左側に締結機構３によって連結されるタービンハウジング４と、ベアリングハウジング２の右側に締結ボルト５によって連結されるコンプレッサハウジング６と、を有する。これらは一体化されている。 FIG. 1 is a schematic sectional view of the supercharger C. Hereinafter, the arrow L shown in FIG. 1 will be described as a direction indicating the left side of the supercharger C, and the arrow R will be described as a direction indicating the right side of the supercharger C. As shown in FIG. 1, the supercharger C includes a supercharger main body 1. The turbocharger body 1 includes a bearing housing 2, a turbine housing 4 connected to the left side of the bearing housing 2 by a fastening mechanism 3, and a compressor housing 6 connected to the right side of the bearing housing 2 by fastening bolts 5. Have. These are integrated.
　ベアリングハウジング２のタービンハウジング４近傍の外周面には、突起２ａが設けられている。突起２ａは、ベアリングハウジング２の径方向に突出している。また、タービンハウジング４のベアリングハウジング２近傍の外周面には、突起４ａが設けられている。突起４ａは、タービンハウジング４の径方向に突出している。ベアリングハウジング２とタービンハウジング４は、突起２ａ、４ａを締結機構３によってバンド締結して固定される。締結機構３は、突起２ａ、４ａを挟持する締結バンド（例えばＧカップリング）で構成される。 A protrusion 2 a is provided on the outer peripheral surface of the bearing housing 2 in the vicinity of the turbine housing 4. The protrusion 2 a protrudes in the radial direction of the bearing housing 2. A projection 4 a is provided on the outer peripheral surface of the turbine housing 4 in the vicinity of the bearing housing 2. The protrusion 4 a protrudes in the radial direction of the turbine housing 4. The bearing housing 2 and the turbine housing 4 are fixed by fastening the protrusions 2 a and 4 a with the fastening mechanism 3. The fastening mechanism 3 includes a fastening band (for example, G coupling) that holds the protrusions 2a and 4a.
　ベアリングハウジング２には、過給機Ｃの左右方向に貫通する貫通孔２ｂが形成されている。貫通孔２ｂには、回転軸７が回転自在に支持されている。回転軸７の左端部にはタービンインペラ８が一体的に固定されている。タービンインペラ８は、タービンハウジング４内に回転自在に収容されている。また、回転軸７の右端部にはコンプレッサインペラ９が一体的に固定されている。コンプレッサインペラ９は、コンプレッサハウジング６内に回転自在に収容されている。 The bearing housing 2 is formed with a through hole 2b that penetrates the supercharger C in the left-right direction. A rotary shaft 7 is rotatably supported in the through hole 2b. A turbine impeller 8 is integrally fixed to the left end portion of the rotating shaft 7. The turbine impeller 8 is rotatably accommodated in the turbine housing 4. A compressor impeller 9 is integrally fixed to the right end portion of the rotating shaft 7. The compressor impeller 9 is rotatably accommodated in the compressor housing 6.
　コンプレッサハウジング６には吸気口１０が形成されている。吸気口１０は、過給機Ｃの右側に開口し、エアクリーナ（図示せず）に接続する。また、締結ボルト５によってベアリングハウジング２とコンプレッサハウジング６とが連結された状態では、両ハウジング２、６の、互いに対向する対向面が、空気を圧縮して昇圧するディフューザ流路１１を形成する。ディフューザ流路１１は、回転軸７（コンプレッサインペラ９）の径方向内側から外側に向けて環状に形成されている。ディフューザ流路１１は、径方向内側において、コンプレッサインペラ９を介して吸気口１０に連通している。 An air inlet 10 is formed in the compressor housing 6. The intake port 10 opens to the right side of the supercharger C and is connected to an air cleaner (not shown). When the bearing housing 2 and the compressor housing 6 are connected by the fastening bolt 5, the opposing surfaces of the two housings 2 and 6 form a diffuser passage 11 that compresses and pressurizes air. The diffuser flow path 11 is formed in an annular shape from the radially inner side to the outer side of the rotating shaft 7 (compressor impeller 9). The diffuser flow path 11 communicates with the intake port 10 via the compressor impeller 9 on the radially inner side.
　また、コンプレッサハウジング６にはコンプレッサスクロール流路１２が設けられている。コンプレッサスクロール流路１２は環状に形成され、ディフューザ流路１１よりも回転軸７（コンプレッサインペラ９）の径方向外側に位置する。コンプレッサスクロール流路１２は、エンジンの吸気口（図示せず）に連通している。また、コンプレッサスクロール流路１２は、ディフューザ流路１１にも連通している。したがって、コンプレッサインペラ９が回転すると、空気は、吸気口１０からコンプレッサハウジング６内に吸引され、ディフューザ流路１１およびコンプレッサスクロール流路１２で昇圧されてエンジンの吸気口に導かれる。 The compressor housing 6 is provided with a compressor scroll passage 12. The compressor scroll passage 12 is formed in an annular shape, and is positioned on the outer side in the radial direction of the rotating shaft 7 (compressor impeller 9) than the diffuser passage 11. The compressor scroll passage 12 communicates with an intake port (not shown) of the engine. Further, the compressor scroll passage 12 communicates with the diffuser passage 11. Therefore, when the compressor impeller 9 rotates, air is sucked into the compressor housing 6 from the intake port 10, and is boosted by the diffuser flow path 11 and the compressor scroll flow path 12 and guided to the intake port of the engine.
　タービンハウジング４には吐出口１３が形成されている。吐出口１３は、過給機Ｃの左側に開口し、排気ガス浄化装置（図示せず）に接続する。タービンハウジング４は、吐出口１３を一端として含む内部空間Ｓを有する。内部空間Ｓには、後述するバルブ１６が配されている。また、タービンハウジング４には、内部流路１４と、タービンスクロール流路１５とが設けられている。タービンスクロール流路１５は環状に形成され、内部流路１４よりも回転軸７（タービンインペラ８）の径方向外側に位置する。タービンスクロール流路１５は、エンジンの排気マニホールド（図示せず）から排出される排気ガスが導かれるガス流入口１７（図２（ｂ）参照）に連通する。また、タービンスクロール流路１５は、内部流路１４にも連通している。したがって、排気ガスは、ガス流入口１７からタービンスクロール流路１５に導かれ、内部流路１４、タービンインペラ８、および、内部空間Ｓを介して吐出口１３に導かれる。この流通過程において、排気ガスはタービンインペラ８を回転させる。タービンインペラ８の回転力は、回転軸７を介してコンプレッサインペラ９に伝達され、これによりコンプレッサインペラ９は回転する。空気は、このコンプレッサインペラ９の回転力によって昇圧され、エンジンの吸気口に導かれる。 A discharge port 13 is formed in the turbine housing 4. The discharge port 13 opens to the left side of the supercharger C and is connected to an exhaust gas purification device (not shown). The turbine housing 4 has an internal space S that includes the discharge port 13 as one end. In the internal space S, a later-described valve 16 is arranged. The turbine housing 4 is provided with an internal flow path 14 and a turbine scroll flow path 15. The turbine scroll flow path 15 is formed in an annular shape and is located on the radially outer side of the rotary shaft 7 (turbine impeller 8) than the internal flow path 14. The turbine scroll passage 15 communicates with a gas inlet 17 (see FIG. 2B) through which exhaust gas discharged from an engine exhaust manifold (not shown) is guided. Further, the turbine scroll flow path 15 communicates with the internal flow path 14. Accordingly, the exhaust gas is guided from the gas inlet 17 to the turbine scroll flow path 15 and is guided to the discharge port 13 via the internal flow path 14, the turbine impeller 8, and the internal space S. In this distribution process, the exhaust gas rotates the turbine impeller 8. The rotational force of the turbine impeller 8 is transmitted to the compressor impeller 9 via the rotating shaft 7, whereby the compressor impeller 9 rotates. The air is boosted by the rotational force of the compressor impeller 9 and guided to the intake port of the engine.
　図２（ａ）及び図２（ｂ）は、タービンハウジング４の外観図である。図２（ａ）は、タービンハウジング４の吐出口１３を正面から見た図である。図２（ｂ）は、タービンハウジング４の側面図である。図２（ｂ）において、ガス流入口１７は、タービンハウジング４の大凡下側に開口している。ガス流入口１７からタービンスクロール流路１５に連通する流路は、タービンスクロール流路１５より上流側で分岐している。また、図１に示すように、吐出口１３を含む内部空間Ｓを形成するタービンハウジング４の壁面（内壁）には、この分岐した流路であるバイパス流路１８（流路）の出口端１８ａが形成されている。 FIGS. 2A and 2B are external views of the turbine housing 4. FIG. 2A is a view of the discharge port 13 of the turbine housing 4 as viewed from the front. FIG. 2B is a side view of the turbine housing 4. In FIG. 2B, the gas inflow port 17 is open to the lower side of the turbine housing 4. A flow path communicating from the gas inlet 17 to the turbine scroll flow path 15 is branched upstream of the turbine scroll flow path 15. Further, as shown in FIG. 1, an outlet end 18 a of a bypass flow path 18 (flow path) that is a branched flow path is formed on the wall surface (inner wall) of the turbine housing 4 that forms the internal space S including the discharge port 13. Is formed.
　排気ガスはガス流入口１７から流入し、その一部は、バイパス流路１８を介して、タービンインペラ８の下流にある内部空間Ｓに流出することができる。即ち、排気ガスの一部は、タービンインペラ８やタービンスクロール流路１５をバイパスすることができる。 Exhaust gas flows from the gas inlet 17, and a part of the exhaust gas can flow out to the internal space S downstream of the turbine impeller 8 via the bypass flow path 18. That is, part of the exhaust gas can bypass the turbine impeller 8 and the turbine scroll passage 15.
　バルブ１６は、出口端１８ａの内径よりも外径の大きい弁体によって構成されている。バルブ１６は、バイパス流路１８の出口端１８ａの周囲に形成されたシート面１８ｂに当接することでバイパス流路１８を閉じ、シート面１８ｂから離隔することでバイパス流路１８を開く。 The valve 16 is configured by a valve body having an outer diameter larger than the inner diameter of the outlet end 18a. The valve 16 closes the bypass flow path 18 by contacting a seat surface 18b formed around the outlet end 18a of the bypass flow path 18, and opens the bypass flow path 18 by separating from the seat surface 18b.
　図２（ｂ）に示すアクチュエータロッド１９は、タービンハウジング４の外部に配されている。アクチュエータロッド１９の一端は、アクチュエータ（図示せず）に固定されており、アクチュエータロッド１９はアクチュエータの動力によって軸方向に作動する。アクチュエータロッド１９の他端は、アクチュエータロッド１９の軸方向に直交する方向に突出するピンロッド２１（ロッド）に固定されている。 The actuator rod 19 shown in FIG. 2B is arranged outside the turbine housing 4. One end of the actuator rod 19 is fixed to an actuator (not shown), and the actuator rod 19 is operated in the axial direction by the power of the actuator. The other end of the actuator rod 19 is fixed to a pin rod 21 (rod) protruding in a direction orthogonal to the axial direction of the actuator rod 19.
　リンク板２０（リンク部材）は、板部材によって構成され、タービンハウジング４の外部に設けられる。リンク板２０の一端には、リンク孔２０ａが形成されている。リンク板２０のリンク孔２０ａには、ピンロッド２１が、回転自在に挿通（支持）されている。即ち、ピンロッド２１は、アクチュエータロッド１９に固定され、且つ、リンク板２０に回転自在に支持されている。 The link plate 20 (link member) is constituted by a plate member and is provided outside the turbine housing 4. A link hole 20 a is formed at one end of the link plate 20. A pin rod 21 is rotatably inserted (supported) into the link hole 20a of the link plate 20. That is, the pin rod 21 is fixed to the actuator rod 19 and is rotatably supported by the link plate 20.
　そのため、図２（ｂ）に示すように、アクチュエータロッド１９が、矢印ａが示す向きに作動すると、リンク板２０は、矢印ｂが示す向きに揺動する。一方、アクチュエータロッド１９が、矢印ｃが示す向きに作動すると、リンク板２０は、矢印ｄの向きに揺動する。 Therefore, as shown in FIG. 2B, when the actuator rod 19 operates in the direction indicated by the arrow a, the link plate 20 swings in the direction indicated by the arrow b. On the other hand, when the actuator rod 19 operates in the direction indicated by the arrow c, the link plate 20 swings in the direction indicated by the arrow d.
　また、図２（ａ）に示すように、タービンハウジング４にはハウジング孔４ｂが形成されている。ハウジング孔４ｂは、タービンハウジング４の外部（タービンハウジング４のアクチュエータロッド１９側）と、タービンハウジング４の内部空間Ｓとの間を貫通する。ハウジング孔４ｂには、軸受部２２が圧入されている。 Further, as shown in FIG. 2A, the turbine housing 4 has a housing hole 4b. The housing hole 4 b penetrates between the outside of the turbine housing 4 (the actuator rod 19 side of the turbine housing 4) and the internal space S of the turbine housing 4. A bearing portion 22 is press-fitted into the housing hole 4b.
　軸受部２２は、円筒状の部材で構成されている。軸受部２２は、その一端から他端まで貫通する軸受孔２２ａを有する。軸受孔２２ａには、シャフト２３が挿通される。また、軸受部２２の一端は、内部空間Ｓを形成するタービンハウジング４の内壁から突出する突出部２２ｂとなっている。軸受部２２の他端は、タービンハウジング４の外部に突出している。即ち、軸受部２２の一端は内部空間Ｓに位置し、軸受部２２の他端はタービンハウジング４の外部に位置している。 The bearing portion 22 is composed of a cylindrical member. The bearing portion 22 has a bearing hole 22a that penetrates from one end to the other end. The shaft 23 is inserted through the bearing hole 22a. One end of the bearing portion 22 is a protruding portion 22 b that protrudes from the inner wall of the turbine housing 4 that forms the inner space S. The other end of the bearing portion 22 protrudes outside the turbine housing 4. That is, one end of the bearing portion 22 is located in the internal space S, and the other end of the bearing portion 22 is located outside the turbine housing 4.
　このように、軸受部２２の一端がタービンハウジング４の内部空間Ｓに突出し、軸受部２２の他端がタービンハウジング４の外部に突出している。即ち、軸受部２２の軸受孔２２ａは、タービンハウジング４の内部（内部空間Ｓ）とタービンハウジング４の外部との間を貫通している。 Thus, one end of the bearing portion 22 protrudes into the internal space S of the turbine housing 4 and the other end of the bearing portion 22 protrudes outside the turbine housing 4. That is, the bearing hole 22 a of the bearing portion 22 penetrates between the inside of the turbine housing 4 (internal space S) and the outside of the turbine housing 4.
　上述の通り、シャフト２３は軸受部２２の軸受孔２２ａに挿通され、軸受部２２によって回転自在に支持されている。シャフト２３の一端は、軸受部２２よりもタービンハウジング４の内部空間Ｓ側に突出している。即ち、シャフト２３は、その一端が内部空間Ｓに位置した状態で、軸受孔２２ａに回転自在に支持されている。また、シャフト２３の他端は、タービンハウジング４および軸受部２２よりも、タービンハウジング４の外側に突出している。シャフト２３の他端は、リンク板２０の固定孔２０ｂに挿通された状態で、リンク板２０に溶接されている。なお、リンク孔２０ａがリンク板２０の一端側に設けられているとすると、固定孔２０ｂはリンク板２０の他端側（図２（ｂ）中、大凡下側）に設けられている。 As described above, the shaft 23 is inserted into the bearing hole 22 a of the bearing portion 22 and is rotatably supported by the bearing portion 22. One end of the shaft 23 protrudes from the bearing portion 22 toward the internal space S of the turbine housing 4. That is, the shaft 23 is rotatably supported by the bearing hole 22a with one end thereof positioned in the internal space S. Further, the other end of the shaft 23 protrudes outside the turbine housing 4 from the turbine housing 4 and the bearing portion 22. The other end of the shaft 23 is welded to the link plate 20 while being inserted into the fixing hole 20 b of the link plate 20. If the link hole 20a is provided on one end side of the link plate 20, the fixing hole 20b is provided on the other end side (generally lower side in FIG. 2B) of the link plate 20.
　取付板２４は板部材によって構成され、バルブ１６とシャフト２３とを連結する。取付板２４の一端側にはバルブ１６が設けられ、取付板２４の他端側にはシャフト２３が溶接されている。取付板２４とバルブ１６の連結構造、および取付板２４とシャフト２３の連結構造については後に詳述する。 The mounting plate 24 is constituted by a plate member, and connects the valve 16 and the shaft 23. A valve 16 is provided on one end side of the mounting plate 24, and a shaft 23 is welded to the other end side of the mounting plate 24. The connection structure between the mounting plate 24 and the valve 16 and the connection structure between the mounting plate 24 and the shaft 23 will be described in detail later.
　取付板２４によって、バルブ１６は、シャフト２３と共に、シャフト２３の回転方向に一体回転する。その結果、ピンロッド２１がアクチュエータの動力によってピンロッド２１の軸心に直交する方向（図２（ｂ）中、矢印ａ、ｃが示す向き）に移動すると、リンク板２０の作動（図２（ｂ）中、矢印ｂ、ｄが示す向き）に伴って、シャフト２３およびバルブ１６が一体回転する。こうして、バルブ１６がバイパス流路１８の出口端１８ａを開閉する。 The valve 16 is rotated together with the shaft 23 in the rotation direction of the shaft 23 by the mounting plate 24. As a result, when the pin rod 21 is moved in the direction orthogonal to the axis of the pin rod 21 by the power of the actuator (the direction indicated by the arrows a and c in FIG. 2B), the operation of the link plate 20 (FIG. 2B). The direction indicated by the arrows b and d), the shaft 23 and the valve 16 rotate together. Thus, the valve 16 opens and closes the outlet end 18 a of the bypass flow path 18.
　図３（ａ）～図３（ｃ）は、取付板２４を説明するための図である。図３（ａ）は、取付板２４の斜視図である。図３（ｂ）は、取付板２４の側面図である。図３（ｃ）は、取付板２４の上面図である。 FIGS. 3A to 3C are diagrams for explaining the mounting plate 24. FIG. FIG. 3A is a perspective view of the mounting plate 24. FIG. 3B is a side view of the mounting plate 24. FIG. 3C is a top view of the mounting plate 24.
　図３（ａ）～図３（ｃ）に示すように、取付板２４は、本体部２４ａと、本体部２４ａの一端に形成された円筒状の円筒部２４ｂとを有する。円筒部２４ｂには挿通孔２４ｃが設けられ、挿通孔２４ｃにはシャフト２３が挿通される。円筒部２４ｂには、露出孔２４ｄが形成されている。露出孔２４ｄは、挿通孔２４ｃの径方向に延伸し、円筒部２４ｂの外部から挿通孔２４ｃに貫通する。挿通孔２４ｃにシャフト２３が挿通されると、露出孔２４ｄからシャフト２３の一部が露出する。シャフト２３が挿通孔２４ｃに挿通された状態で、露出孔２４ｄから、取付板２４の円筒部２４ｂがシャフト２３に溶接される。 As shown in FIGS. 3A to 3C, the mounting plate 24 includes a main body 24a and a cylindrical cylindrical portion 24b formed at one end of the main body 24a. The cylindrical portion 24b is provided with an insertion hole 24c, and the shaft 23 is inserted into the insertion hole 24c. An exposure hole 24d is formed in the cylindrical portion 24b. The exposure hole 24d extends in the radial direction of the insertion hole 24c and penetrates the insertion hole 24c from the outside of the cylindrical portion 24b. When the shaft 23 is inserted into the insertion hole 24c, a part of the shaft 23 is exposed from the exposure hole 24d. With the shaft 23 inserted through the insertion hole 24 c, the cylindrical portion 24 b of the mounting plate 24 is welded to the shaft 23 through the exposure hole 24 d.
　取付板２４の本体部２４ａには本体孔２４ｅが設けられている。本体孔２４ｅは、挿通孔２４ｃの中心軸方向に直交する方向に本体部２４ａを貫通している。取付板２４とバルブ１６は、この本体孔２４ｅを介して連結される。 A main body hole 24e is provided in the main body 24a of the mounting plate 24. The main body hole 24e passes through the main body portion 24a in a direction orthogonal to the central axis direction of the insertion hole 24c. The mounting plate 24 and the valve 16 are connected through the main body hole 24e.
　図４は、取付板２４へのバルブ１６の連結構造を説明するための図であり、取付板２４とバルブ１６が連結された状態で、取付板２４を側面から見た図である。図４に示すように、バルブ１６の本体部１６ａには、突起部１６ｂが形成されている。突起部１６ｂは、シート面１８ｂと当接する当接面１６ｃの反対側から、当接面１６ｃの面方向と直交する方向に突出する。なお、突起部１６ｂは、本体部１６ａと一体形成されてもよいし、別部材の突起部１６ｂを本体部１６ａに溶接などで固定してもよい。 FIG. 4 is a view for explaining the connection structure of the valve 16 to the mounting plate 24, and is a view of the mounting plate 24 as viewed from the side in a state where the mounting plate 24 and the valve 16 are connected. As shown in FIG. 4, a protrusion 16 b is formed on the main body 16 a of the valve 16. The protrusion 16b protrudes in a direction perpendicular to the surface direction of the contact surface 16c from the opposite side of the contact surface 16c that contacts the sheet surface 18b. The protrusion 16b may be formed integrally with the main body 16a, or the protrusion 16b of another member may be fixed to the main body 16a by welding or the like.
　バルブ１６の本体部１６ａおよび座金２５が取付板２４の本体部２４ａを挟んだ状態で、バルブ１６の突起部１６ｂが、取付板２４の本体孔２４ｅおよび座金２５に挿通される。その後、座金２５から突出した突起部１６ｂの先端を加圧変形させてかしめることで、取付板２４とバルブ１６が連結される。 In a state where the main body portion 16 a and the washer 25 of the valve 16 sandwich the main body portion 24 a of the mounting plate 24, the protruding portion 16 b of the valve 16 is inserted into the main body hole 24 e and the washer 25 of the mounting plate 24. Thereafter, the mounting plate 24 and the valve 16 are connected by pressurizing and deforming the tip of the protruding portion 16 b protruding from the washer 25.
　ところで、シャフト２３の回転移動を阻害しないように、シャフト２３の径方向や軸方向には隙間が形成されている。そのため、排気脈動などの影響により、シャフト２３が軸方向や径方向に振動して騒音が生じる場合がある。そこで、本実施形態のリンク板２０は、このような振動を抑えるための構造が備えられている。 Incidentally, a gap is formed in the radial direction and the axial direction of the shaft 23 so as not to hinder the rotational movement of the shaft 23. Therefore, the shaft 23 may vibrate in the axial direction or the radial direction due to the influence of exhaust pulsation or the like, and noise may be generated. Therefore, the link plate 20 of the present embodiment is provided with a structure for suppressing such vibration.
　図５（ａ）及び図５（ｂ）は、リンク板２０の構造を説明するための図である。図５（ａ）は、図２（ｂ）におけるＶ（ａ）－Ｖ（ａ）線に沿った断面を示す。図５（ｂ）は、図５（ａ）におけるＶ（ｂ）矢視図である。理解を容易とするため、図５（ａ）は、リンク板２０、ピンロッド２１、シャフト２３、軸受部２２、および、タービンハウジング４の一部を示し、図５（ｂ）は、リンク板２０およびシャフト２３のみを示す。 FIG. 5A and FIG. 5B are diagrams for explaining the structure of the link plate 20. FIG. 5A shows a cross section taken along line V (a) -V (a) in FIG. FIG.5 (b) is a V (b) arrow line view in Fig.5 (a). For ease of understanding, FIG. 5A shows the link plate 20, the pin rod 21, the shaft 23, the bearing portion 22, and a part of the turbine housing 4. FIG. 5B shows the link plate 20 and Only the shaft 23 is shown.
　図５（ａ）及び図５（ｂ）に示すように、リンク板２０の本体部２０ｃには、リンク孔２０ａおよび固定孔２０ｂが設けられている。リンク孔２０ａと固定孔２０ｂは、それぞれ、シャフト２３の軸方向に平行に本体部２０ｃを貫通している。 As shown in FIGS. 5A and 5B, the main body portion 20c of the link plate 20 is provided with a link hole 20a and a fixing hole 20b. Each of the link hole 20a and the fixing hole 20b passes through the main body 20c in parallel with the axial direction of the shaft 23.
　図５（ａ）に示すように、シャフト２３の端部はタービンハウジング４の外部（図５（ａ）中、右側）に突出している。この端部に小径部２３ａが形成されている。小径部２３ａの外径は、軸受部２２に挿通されているシャフト２３の部位の外径よりも小さい。小径部２３ａは、リンク板２０の本体部２０ｃに形成された固定孔２０ｂに挿通され、本体部２０ｃ（リンク板２０）に固定されている。 As shown in FIG. 5A, the end of the shaft 23 protrudes to the outside of the turbine housing 4 (on the right side in FIG. 5A). A small diameter portion 23a is formed at this end. The outer diameter of the small diameter portion 23 a is smaller than the outer diameter of the portion of the shaft 23 inserted through the bearing portion 22. The small diameter portion 23a is inserted through a fixing hole 20b formed in the main body portion 20c of the link plate 20, and is fixed to the main body portion 20c (link plate 20).
　上記のように、ピンロッド２１は、リンク孔２０ａに回転自在に挿通されている。このとき、ピンロッド２１は、軸心をシャフト２３の軸心と平行にして配置されている。 As described above, the pin rod 21 is rotatably inserted into the link hole 20a. At this time, the pin rod 21 is disposed with its axis parallel to the axis of the shaft 23.
　リンク板２０の本体部２０ｃには、肉厚部２０ｄが設けられている。肉厚部２０ｄは、リンク板２０の本体部２０ｃのうち、リンク孔２０ａが開口する部分を除く部位に形成されている。ここでは、本体部２０ｃのうち、リンク孔２０ａの周囲の所定範囲以外のすべての部位が、肉厚部２０ｄとして形成されている。 The main body portion 20c of the link plate 20 is provided with a thick portion 20d. The thick portion 20d is formed in a portion of the main body portion 20c of the link plate 20 excluding a portion where the link hole 20a is opened. Here, all the parts other than the predetermined range around the link hole 20a in the main body part 20c are formed as the thick part 20d.
　肉厚部２０ｄは、シャフト２３或いはピンロッド２１の軸方向（図５（ａ）中、左右方向）の厚みが、リンク孔２０ａが形成された部分（リンク孔２０ａが開口する部分）２０ｅよりも大きい。 The thick part 20d is thicker in the axial direction of the shaft 23 or the pin rod 21 (left and right in FIG. 5A) than the part where the link hole 20a is formed (the part where the link hole 20a opens) 20e. .
　肉厚部２０ｄを設けることで、リンク板２０の重量が増加し、リンク板２０自体や、リンク板２０に固定されたシャフト２３、取付板２４、バルブ１６などの振動が抑制される。その結果、これらの振動に伴う異音を抑制することができる。 By providing the thick portion 20d, the weight of the link plate 20 increases, and vibrations of the link plate 20 itself, the shaft 23 fixed to the link plate 20, the mounting plate 24, the valve 16, and the like are suppressed. As a result, abnormal noise associated with these vibrations can be suppressed.
　また、リンク孔２０ａの周囲の肉厚が増加すると、リンク孔２０ａが軸方向に長くなって、リンク孔２０ａとピンロッド２１の摺動抵抗が増加しやすい。本実施形態では、肉厚部２０ｄを設ける一方でリンク孔２０ａの周囲の肉厚の増加を抑えることにより、摺動抵抗の増加によるリンク板２０の作動性の低下を抑制することが可能となる。なお、他の部材と干渉しない範囲で、リンク板２０をシャフト２３の径方向にも大型化することで、一層、重量の増加による振動抑制効果を高めることができる。 Also, when the thickness around the link hole 20a increases, the link hole 20a becomes longer in the axial direction, and the sliding resistance between the link hole 20a and the pin rod 21 tends to increase. In the present embodiment, it is possible to suppress a decrease in the operability of the link plate 20 due to an increase in sliding resistance by providing the thick portion 20d and suppressing an increase in the thickness around the link hole 20a. . In addition, the vibration suppression effect by the increase in a weight can be heightened further by enlarging the link board 20 also in the radial direction of the shaft 23 in the range which does not interfere with another member.
　上述した実施形態では、肉厚部２０ｄは、リンク孔２０ａの周囲の所定範囲外のすべての部位に亘って形成されている場合について説明した。しかし、肉厚部２０ｄは、少なくとも、固定孔２０ｂ（リンク板２０の本体部２０ｃにおけるシャフト２３の固定部）と、リンク孔２０ａとの間に形成されていればよい。ただし、肉厚部２０ｄを、リンク孔２０ａの周囲の所定範囲外のすべての部位に亘って形成することで、リンク板２０の重量をさらに増すことができ、振動抑制効果を一層高めることができる。 In the above-described embodiment, the case where the thick portion 20d is formed over all portions outside the predetermined range around the link hole 20a has been described. However, the thick portion 20d only needs to be formed at least between the fixing hole 20b (the fixing portion of the shaft 23 in the main body portion 20c of the link plate 20) and the link hole 20a. However, by forming the thick portion 20d over all the portions outside the predetermined range around the link hole 20a, the weight of the link plate 20 can be further increased, and the vibration suppressing effect can be further enhanced. .
　また、肉厚部２０ｄをリンク孔２０ａの周囲まで、リンク板２０の全体に亘って形成してもよい。 Further, the thick portion 20d may be formed over the entire link plate 20 up to the periphery of the link hole 20a.
　また、上述した実施形態では、シャフト２３の他端（小径部２３ａ）がリンク板２０のリンク孔２０ａに挿通されて、シャフト２３とリンク板２０が固定される場合について説明したが、リンク板２０のリンク孔２０ａは必須の構成ではない。例えば、シャフト２３の軸方向の他端側の端面がリンク板２０に当接して、当接部分が溶接などで固定されていてもよい。 In the above-described embodiment, the case where the other end (small diameter portion 23a) of the shaft 23 is inserted into the link hole 20a of the link plate 20 and the shaft 23 and the link plate 20 are fixed is described. The link hole 20a is not an essential configuration. For example, the end surface on the other end side in the axial direction of the shaft 23 may be in contact with the link plate 20 and the contact portion may be fixed by welding or the like.
　上述した実施形態では、バイパス流路１８の出口端１８ａを開閉するバルブ１６を作動させるためのリンク板２０について説明したが、他のバルブを作動させるためのリンク板に適用してもよい。 In the above-described embodiment, the link plate 20 for operating the valve 16 that opens and closes the outlet end 18a of the bypass flow path 18 has been described, but the present invention may be applied to a link plate for operating other valves.
　具体的には、例えば、コンプレッサハウジング６に設けられ吸気流路をバイパスさせるバイパス流路を開閉するためのリンク板であってもよい。 Specifically, for example, a link plate provided in the compressor housing 6 for opening and closing a bypass passage that bypasses the intake passage may be used.
　また、過給機が、ツインスクロール型過給機である場合、一方のタービンスクロール流路に流入する排気ガスと、他方のタービンスクロール流路に流入する排気ガスとの流量を調整するためのリンク板であってもよい。 Further, when the supercharger is a twin scroll type supercharger, a link for adjusting the flow rate of the exhaust gas flowing into one turbine scroll flow path and the exhaust gas flowing into the other turbine scroll flow path It may be a plate.
　また、エンジンの排気マニホールドに低圧段と高圧段の過給機が直列に接続される直列型の多段式過給機や、エンジンの排気マニホールドに複数の過給機が並列に接続される並列型の多段式過給機を構成する、１つの過給機の場合、当該過給機のタービンハウジングに流入する排気ガスの流量を調整するためのリンク板に適用してもよい。 In addition, a multi-stage supercharger in which a low-pressure stage and a high-pressure stage supercharger are connected in series to the engine exhaust manifold, or a parallel type in which multiple superchargers are connected in parallel to the engine exhaust manifold. In the case of one supercharger constituting the multistage supercharger, the present invention may be applied to a link plate for adjusting the flow rate of exhaust gas flowing into the turbine housing of the supercharger.
　また、上述した実施形態では、タービンハウジング４にハウジング孔４ｂが設けられ、ハウジング孔４ｂに軸受部２２が挿通される構成について説明した。しかし、軸受部２２を設けずに、ハウジング孔４ｂに直接、シャフト２３を挿通させ、ハウジング孔４ｂを軸受部２２として機能させてもよい。 In the above-described embodiment, the configuration in which the housing hole 4b is provided in the turbine housing 4 and the bearing portion 22 is inserted into the housing hole 4b has been described. However, the shaft 23 may be directly inserted into the housing hole 4 b without providing the bearing 22, and the housing hole 4 b may function as the bearing 22.
　以上、添付図面を参照しながら本発明の好適な実施形態について説明したが、本発明はかかる実施形態に限定されないことは言うまでもない。当業者であれば、特許請求の範囲に記載された範疇において、各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such embodiments. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Is done.
　本発明は、ハウジングの内部空間に開口する流路を開閉するバルブを備える過給機に利用することができる。 The present invention can be used for a supercharger including a valve that opens and closes a flow path that opens in an internal space of a housing.

Claims (1)

  1. 過給機であって、
    　内部空間が内部に形成されたハウジングと、
    　前記ハウジングに設けられ、前記ハウジングの前記内部空間と前記ハウジングの外部との間を貫通する軸受孔と、
    　一端が前記ハウジングの内部に位置し、他端が前記ハウジングの外に位置した状態で前記軸受孔に回転自在に支持されるシャフトと、
    　前記シャフトに固定され、前記シャフトの回転に伴って前記内部空間に開口する流路を開閉するバルブと、
    　前記ハウジングの外に設けられ、リンク孔が設けられると共に前記シャフトに固定された本体部を有するリンク部材と、
    　軸心を前記シャフトの軸心と平行にして設けられ、前記リンク孔に回転自在に支持されるロッドと、
    を備え、
    　前記リンク部材の本体部は、少なくとも前記リンク孔と前記シャフトが固定された部分との間に設けられる肉厚部を含み、
    　前記肉厚部は、前記シャフト或いは前記ロッドの軸方向における厚みが、前記本体部において前記リンク孔が形成された部分よりも大きく、
    　前記ロッドがアクチュエータの動力によって移動すると、前記リンク部材の作動により前記シャフトおよび前記バルブが一体回転して前記流路が開閉されることを特徴とする過給機。
          A turbocharger,
    A housing having an internal space formed therein;
    A bearing hole provided in the housing and penetrating between the internal space of the housing and the outside of the housing;
    A shaft that is rotatably supported in the bearing hole in a state where one end is located inside the housing and the other end is located outside the housing;
    A valve that is fixed to the shaft and opens and closes a flow path that opens to the internal space as the shaft rotates;
    A link member provided outside the housing, provided with a link hole and having a main body fixed to the shaft;
    A rod provided with an axis parallel to the axis of the shaft and rotatably supported by the link hole;
    With
    The main body portion of the link member includes at least a thick portion provided between the link hole and the portion to which the shaft is fixed,
    The thickness portion is thicker in the axial direction of the shaft or the rod than the portion where the link hole is formed in the main body portion,
    When the rod is moved by the power of an actuator, the shaft and the valve are integrally rotated by the operation of the link member to open and close the flow path.
PCT/JP2015/066004 2014-06-09 2015-06-03 Supercharger WO2015190361A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020041517A (en) * 2018-09-13 2020-03-19 トヨタ自動車株式会社 Turbocharger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200138162A (en) * 2018-04-05 2020-12-09 니탄 밸브 가부시키가이샤 Waste gate valve
WO2021205826A1 (en) * 2020-04-07 2021-10-14 株式会社Ihi Valve device and method for manufacturing valve device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009236008A (en) * 2008-03-27 2009-10-15 Toyota Motor Corp Cylinder block of internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009236008A (en) * 2008-03-27 2009-10-15 Toyota Motor Corp Cylinder block of internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020041517A (en) * 2018-09-13 2020-03-19 トヨタ自動車株式会社 Turbocharger
US20200088062A1 (en) * 2018-09-13 2020-03-19 Toyota Jidosha Kabushiki Kaisha Turbocharger
US10934882B2 (en) * 2018-09-13 2021-03-02 Toyota Jidosha Kabushiki Kaisha Turbocharger
JP7103098B2 (en) 2018-09-13 2022-07-20 トヨタ自動車株式会社 Turbocharger

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