WO2007026449A1 - Dispositif de réglage de temporisation de soupape - Google Patents

Dispositif de réglage de temporisation de soupape Download PDF

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Publication number
WO2007026449A1
WO2007026449A1 PCT/JP2006/310155 JP2006310155W WO2007026449A1 WO 2007026449 A1 WO2007026449 A1 WO 2007026449A1 JP 2006310155 W JP2006310155 W JP 2006310155W WO 2007026449 A1 WO2007026449 A1 WO 2007026449A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
shaft
hydraulic chamber
rotating body
coil spring
Prior art date
Application number
PCT/JP2006/310155
Other languages
English (en)
Japanese (ja)
Inventor
Koji Yudate
Akira Sakata
Hiroyuki Kinugawa
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to DE112006002222T priority Critical patent/DE112006002222T5/de
Priority to US11/989,743 priority patent/US20100089349A1/en
Priority to JP2007533123A priority patent/JP4290754B2/ja
Publication of WO2007026449A1 publication Critical patent/WO2007026449A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34456—Locking in only one position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34473—Lock movement perpendicular to camshaft axis
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49293—Camshaft making

Definitions

  • the present invention relates to a valve timing adjusting device that controls the opening / closing timing of an intake valve or an exhaust valve of an internal combustion engine such as an engine (hereinafter referred to as an engine).
  • a conventional valve timing adjusting device integrally fixes a case having a plurality of protrusions on the inner side and forming a hydraulic chamber between the shoes, and a front cover and a rear force bar that close the hydraulic chamber.
  • a first rotating body that rotates integrally with the crankshaft and a plurality of vanes that divide the hydraulic chamber into an advance hydraulic chamber and a retard hydraulic chamber, respectively, and relatively rotate by a predetermined angle within the first rotary body.
  • the oil pump of the oil pump that supplies oil to the sliding part of the engine is supplied and discharged. The relative position of the rotating body is controlled.
  • a locking structure for preventing the coil spring from jumping out is required.
  • the stopper is fixed with a shaft inserted in a direction perpendicular to the lock pin receiving hole.
  • the shaft storage diameter formed in the direction becomes smaller, the shaft storage hole needs to be specially cut. For this reason, the number of manufacturing steps increases and the cost increases.
  • two parts, a stagger and a shaft, are required to lock the spring of the coil spring.
  • Patent Document 1 when a plate-shaped stagger is inserted into a groove formed in a direction perpendicular to the lock pin housing hole to lock out the spring of the coil spring, High machining accuracy is required. In addition, since the lock pin and the coil spring are inserted into the storage hole from the outside in the radial direction, and then the plate-shaped stopper is inserted into the groove, the assemblability is poor.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 11 101107
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-002952
  • a valve timing adjusting device that uses a locking member that is easy to manufacture with a simple shape, eases processing accuracy, improves processing and assembly. The purpose is to obtain.
  • a valve timing adjusting apparatus includes a case in which a plurality of protrusions are formed on the inner side and a hydraulic chamber is formed between the shoes, and a front cover and a rear cover that close the hydraulic chamber are integrally fixed.
  • a first rotating body that rotates integrally with the shaft, and the hydraulic chamber Each has a plurality of vanes that are divided into an advance hydraulic chamber and a retard hydraulic chamber, and is capable of relative rotation by a predetermined angle within the first rotating body and is fixed integrally with an intake or exhaust camshaft.
  • Two-rotor, hydraulic supply / discharge means capable of supplying and discharging hydraulic oil to and from the advance hydraulic chamber and the retard hydraulic chamber, a first hole radially passing through the shoe, and the first A second hole that is crossed with respect to the hole and opened in the shear, and a coil spring that presses a lock pin accommodated in the first hole and engages with a recess provided on the outer peripheral surface of the second rotating body; And a shaft inserted into the second hole to prevent the coil spring from popping out.
  • the present invention is configured such that the spring of the coil spring is locked by the shaft inserted into the second hole provided so as to cross the first hole that accommodates the lock pin and the coil spring. Therefore, the hole into which the shaft is inserted can have a size close to the diameter of the lock pin housing hole, and the mold force can be reduced, and the hole processing by cutting is not necessary. As a result, a valve timing adjusting device with excellent manufacturability can be obtained. In addition, the large diameter of the hole into which the shaft is inserted can reduce the dimensional accuracy, improve the processing and assembly, and the shaft can be a simple cylindrical shape. Is also easy.
  • FIG. 1 is a view showing an internal configuration of a valve timing adjusting apparatus according to Embodiment 1 of the present invention, and is a longitudinal sectional view when a second rotating body is located at a most retarded position.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG.
  • FIG. 3 is a longitudinal sectional view taken along line BB in FIG.
  • FIG. 4 is a longitudinal sectional view of the valve timing adjusting device when the second rotating body is positioned at the most advanced position.
  • FIG. 5 is an enlarged cross-sectional view of a main part showing a state where the second rotating body is locked.
  • FIG. 6 is an enlarged longitudinal sectional view of a main part showing a state where the second rotating body is locked.
  • FIG. 7 is an enlarged cross-sectional view of the main part showing a state where the second rotating body is unlocked.
  • FIG. 8 is an enlarged longitudinal sectional view of a main part showing a state where the second rotating body is unlocked.
  • FIG. 10 is an enlarged cross-sectional view of a main part for explaining that the second rotating body cannot rotate relative to the first rotating body.
  • FIG. 11 is an enlarged longitudinal sectional view of a main part for explaining the inability to assemble the second rotating body with respect to the first rotating body.
  • FIG. 12 is an enlarged vertical cross-sectional view of the main part showing an assembled state of a cylindrical shaft and a stepped cylindrical lock pin.
  • FIG. 1 is a longitudinal sectional view of the valve timing adjusting device when the second rotating body is located at the most retarded position.
  • 2 is a cross-sectional view taken along line AA in FIG. 1
  • FIG. 3 is a vertical cross-sectional view taken along line B-B in FIG. 2
  • FIG. 4 is a view when the second rotating body is located at the most advanced angle position. It is a longitudinal cross-sectional view of a valve timing adjusting device.
  • a valve timing adjusting device 1 includes a crankshaft (not shown) and a chain (not shown) of an engine (not shown).
  • a first rotating body 1 that rotates synchronously via the first rotating body 1 and a second rotating body that is disposed in the first rotating body 1 and is integrally fixed to an end face of an intake or exhaust camshaft (hereinafter referred to as a camshaft) 2 It is roughly composed of 3 bodies.
  • the first rotating body 1 includes a case 4 having a sprocket 4a that receives a rotational driving force of a crankshaft (not shown) on the outside and a plurality of shrouds 4b that protrude radially inward on the inside. It consists of a front cover 5 and a rear cover 6 that close the inner space of the case 4, and is fixed to the three by bolt 7.
  • a boss portion 10a integrally fastened to the end surface of the camshaft 2 by a bolt 9 via a washer 8, and an outer peripheral portion of the boss portion 10a also protrude outward in the radial direction. It is composed of a rotor 10 having a plurality of vanes 10b.
  • the vane 10b of this rotor 10 is the case 4
  • the plurality of advance hydraulic chambers 11 that receive hydraulic pressure when rotating the rotor 10 relative to the first rotating body 1 relative to the first rotating body 1 in the plurality of inner spaces formed by the users 4b, and the rotor 10 It is divided into a plurality of retarded hydraulic chambers 12 that are supplied with hydraulic pressure when they are rotated relative to a single rotating body toward the retarded side.
  • Advancing oil passage 13 for supplying hydraulic pressure communicates with each advance hydraulic chamber
  • a retarded oil passage 14 for supplying hydraulic pressure communicates with each retarded hydraulic chamber.
  • a storage hole (first hole) 15 penetrating in the radial direction is formed in the case 4 b of the case 4.
  • a substantially cylindrical lock pin 16 that can reciprocate along the radial direction is inserted into the storage hole 15 from the outside.
  • a substantially cylindrical hole (second hole) 4b-1 is formed in the direction intersecting with the storage hole 15 (axial direction of the port 10), and inserted into this hole 4b-1.
  • the substantially cylindrical shaft 17 holds the rear end of the coil spring 18 and the rear end of the lock pin 16 inserted so as to press the lock pin 16 into the storage hole 15.
  • the diameter of the shaft 17 is set smaller than the diameter of the storage hole 15 of the lock pin 16 and smaller than the diameter of the coil spring 18. Also, by making the shaft 17 have a D-shaped cross-sectional shape, the seat surface position of the D-shaped cross section faces the coil spring 18 according to the assembly direction of the shaft 17 and changes to the non-facing surface.
  • the rotor 10 with the lock pin 16 released is supplied with oil into the advance hydraulic chamber 11 via the advance oil passage 13. Then, when the oil in the retarded hydraulic chamber 12 is discharged through the retarded oil passage 14, the oil is relatively rotated to the advance side as shown in FIG.
  • a hole having a diameter close to the diameter of the storage hole for storing the lock pin and the coil spring is formed so as to intersect with the storage hole, and the hole is substantially formed in the hole. Since a cylindrical shaft is inserted to lock out the spring of the coil spring, the hole for inserting this shaft can be made with a large diameter mold, and when creating a case such as forging Holes can be formed at once. For this reason, it is not necessary to add holes by cutting, and manufacturing costs can be reduced. Also, since the shaft can be a simple cylindrical shape, it can be formed at one time by forging without the need for cutting. As a result, manufacturing costs can be reduced, dimensional accuracy can be relaxed, and processing and assembly can be improved.
  • FIG. 9 is a cross-sectional view of the main part showing the second embodiment, in which the diameter of the shaft 17 is smaller than the diameter of the lock pin receiving hole and the diameter of the coil spring 18.
  • the coil spring 1 can be formed by using the U-shaped assembly jig 21 having the bifurcated piece 21a passing through the clearance (clearance) 22 formed between the lock pin housing hole 15 and the shaft 17. 8 can be compressed radially inward.
  • the shaft 17 can be easily inserted into the hole 4b-1 provided in the axial direction, and assemblability is improved.
  • the gap 22 provided between the lock pin housing hole 15 and the shaft 17 has a drain hole or drain for discharging oil to the lock pin back pressure side. Play the role of a groove.
  • the shaft 17 receives at least a coil spring in the axial direction of the outer peripheral surface. Both of them are configured to have a D-shaped cross section, for example, so as to have one flat seat surface 17a. If the shaft 17 has an arc surface facing the end surface of the lock pin due to an error in the mounting direction of the shaft 17, the lock Set the dimensions so that the end face of the lock pin abuts against the arc surface of the shaft 17 and the tip of the lock pin always protrudes from the inner periphery of the case 4 before the pin is completely stored in the storage hole 15. ing. As a result, the rotor 10 cannot be inserted in the direction indicated by the arrow as shown in FIG. 11, or the rotor 10 cannot be rotated as shown in FIG. It is possible to prevent the outflow of wrongly assembled products.
  • FIG. 8 is a diagram showing the fourth embodiment, in which the end portion of the shaft is attached to one or both of the front cover 5 and the rear cover 6 with which the end portion of the shaft 17 abuts!
  • the engaging positioning recess 5a is formed.
  • the positioning recess 5a is formed in the D-shaped cross-sectional shape, thereby preventing the assembly error of the shaft 17 and preventing the shaft 17 from rotating due to vibration. can do.
  • FIG. 12 is a cross-sectional view of the main part showing the fifth embodiment, in which the shaft 17 is formed in a columnar shape, and the lock pin 16 is formed in a stepped columnar shape.
  • One end of the seating surface of the coil spring 18 abuts on the arc surface of the shaft 17, and the other end abuts on the stepped portion of the lock pin 16 and is configured around the small diameter portion of the lock pin.
  • the end surface of the lock pin 16 on the small diameter side is At the time of removal, it makes contact with the arc surface of the shaft to prevent the coil spring from sticking.
  • the diameter of the coil spring can be made substantially the same as the diameter of the storage hole, so that the storage hole 15 serves as a guide when the coil spring expands and contracts and serves to prevent tilting.
  • the seating surface of the coil spring 18 When the seating surface of the coil spring 18 is in contact with the arc surface of the shaft 17 as in the present embodiment, the seating surface portion of the coil spring is doubled and tripled to prevent deformation of the seating surface portion. You may make a whisper.
  • the present invention can be widely applied to a valve timing adjusting device using a locking member that is installed in an engine or the like and is excellent in processing and assembly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

La présente invention concerne un dispositif de réglage de temporisation de soupape présentant un premier corps rotatif en co-rotation avec un vilebrequin, un second corps rotatif intégralement fixé à un arbre à cames d’admission ou d’échappement, un premier trou traversant radialement un coude formé à l’intérieur du premier corps rotatif, un second trou formé dans le coude et coupant le premier trou, un ressort à enroulement comprimant une goupille d’arrêt reçue dans le premier trou pour engager la goupille d’arrêt avec un retrait formé dans la périphérie extérieure du second corps rotatif et un arbre inséré dans le second trou pour empêcher la sortie du ressort à enroulement.
PCT/JP2006/310155 2005-08-30 2006-05-22 Dispositif de réglage de temporisation de soupape WO2007026449A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112006002222T DE112006002222T5 (de) 2005-08-30 2006-05-22 Ventilsteuerzeit-Einstellvorrichtung
US11/989,743 US20100089349A1 (en) 2005-08-30 2006-05-22 Valve Timing Adjusting Device
JP2007533123A JP4290754B2 (ja) 2005-08-30 2006-05-22 バルブタイミング調整装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005249868 2005-08-30
JP2005-249868 2005-08-30

Publications (1)

Publication Number Publication Date
WO2007026449A1 true WO2007026449A1 (fr) 2007-03-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/310155 WO2007026449A1 (fr) 2005-08-30 2006-05-22 Dispositif de réglage de temporisation de soupape

Country Status (5)

Country Link
US (1) US20100089349A1 (fr)
JP (1) JP4290754B2 (fr)
CN (1) CN100585133C (fr)
DE (1) DE112006002222T5 (fr)
WO (1) WO2007026449A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5376227B2 (ja) * 2009-05-25 2013-12-25 アイシン精機株式会社 弁開閉時期制御装置
JP5029671B2 (ja) * 2009-10-15 2012-09-19 株式会社デンソー バルブタイミング調整装置
DE102010035182A1 (de) * 2010-08-24 2012-03-01 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenversteller-Anordnung sowie Nockenwellenversteller
JP5321925B2 (ja) * 2011-02-18 2013-10-23 アイシン精機株式会社 弁開閉時期制御装置
US8544434B2 (en) 2011-11-23 2013-10-01 Toyota Motor Engineering & Manufacturing North America, Inc. Lock pin for variable valve timing mechanism
JP5781910B2 (ja) * 2011-12-09 2015-09-24 日立オートモティブシステムズ株式会社 内燃機関のバルブタイミング制御装置
JP5991091B2 (ja) * 2012-09-04 2016-09-14 アイシン精機株式会社 弁開閉時期制御装置
US11306626B2 (en) * 2020-06-02 2022-04-19 Schaeffler Technologies AG & Co. KG Camshaft phaser with target wheel washer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10184320A (ja) * 1996-12-24 1998-07-14 Aisin Seiki Co Ltd 弁開閉時期制御装置
JP2002256825A (ja) * 2001-03-05 2002-09-11 Mitsubishi Electric Corp バルブタイミング調整装置
JP2002303106A (ja) * 2001-04-09 2002-10-18 Mitsubishi Electric Corp バルブタイミング調整装置
JP2003097229A (ja) * 2002-09-11 2003-04-03 Toyota Motor Corp 内燃機関のバルブタイミング制御装置
JP2003120230A (ja) * 2001-10-16 2003-04-23 Mitsubishi Electric Corp バルブタイミング調整装置
JP2003227320A (ja) * 2002-01-31 2003-08-15 Mitsubishi Electric Corp バルブタイミング調整装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004263643A (ja) * 2003-03-03 2004-09-24 Mitsubishi Electric Corp バルブタイミング調整装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10184320A (ja) * 1996-12-24 1998-07-14 Aisin Seiki Co Ltd 弁開閉時期制御装置
JP2002256825A (ja) * 2001-03-05 2002-09-11 Mitsubishi Electric Corp バルブタイミング調整装置
JP2002303106A (ja) * 2001-04-09 2002-10-18 Mitsubishi Electric Corp バルブタイミング調整装置
JP2003120230A (ja) * 2001-10-16 2003-04-23 Mitsubishi Electric Corp バルブタイミング調整装置
JP2003227320A (ja) * 2002-01-31 2003-08-15 Mitsubishi Electric Corp バルブタイミング調整装置
JP2003097229A (ja) * 2002-09-11 2003-04-03 Toyota Motor Corp 内燃機関のバルブタイミング制御装置

Also Published As

Publication number Publication date
CN101248255A (zh) 2008-08-20
CN100585133C (zh) 2010-01-27
JPWO2007026449A1 (ja) 2009-03-05
DE112006002222T5 (de) 2008-06-05
JP4290754B2 (ja) 2009-07-08
US20100089349A1 (en) 2010-04-15

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