CN108603422A - The valve timing control device of internal combustion engine and the installation method of the valve timing control device - Google Patents

The valve timing control device of internal combustion engine and the installation method of the valve timing control device Download PDF

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Publication number
CN108603422A
CN108603422A CN201780010231.2A CN201780010231A CN108603422A CN 108603422 A CN108603422 A CN 108603422A CN 201780010231 A CN201780010231 A CN 201780010231A CN 108603422 A CN108603422 A CN 108603422A
Authority
CN
China
Prior art keywords
rotor
mentioned
control device
timing control
valve timing
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201780010231.2A
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Chinese (zh)
Other versions
CN108603422B (en
Inventor
初谷邦长
佐藤健治
市野泽严典
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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Filing date
Publication date
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Publication of CN108603422A publication Critical patent/CN108603422A/en
Application granted granted Critical
Publication of CN108603422B publication Critical patent/CN108603422B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F01L2001/3443—Solenoid driven oil control valves
    • 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
    • F01L2001/34469—Lock movement parallel to camshaft axis
    • 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
    • F01L2001/34479—Sealing of phaser devices
    • 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
    • F01L2001/34483—Phaser return springs
    • 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
    • F01L2250/00—Camshaft drives characterised by their transmission means
    • F01L2250/02—Camshaft drives characterised by their transmission means the camshaft being driven by chains
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/02—Initial camshaft settings

Landscapes

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

Abstract

The present invention provides a kind of valve timing control device of internal combustion engine, has：Shell (7) transmits rotary force from bent axle to it；Blade rotor (8) is set to the inside of shell, has and is connected and fixed in the cylindric rotor (20) on camshaft (2) by cam bolt (5)；Groove portion (47) is set to canister portion (23) front end face of rotor, has the one side (47a) for screwing direction opposite side with cam bolt；One side is formed in such a way that composition is skewed as follows, i.e., compared with the first imaginary plane (S1) made of the axis of rotation of blade rotor (O) is connected with the ora terminalis (47d) of the rotor inner circumferential side of one side, tilted to the direction opposite side that screws with cam bolt.Thereby, it is possible to inhibit the rotation of the blade rotor in bolt-connection blade rotor on camshaft, and inhibit to inhibit the deformation generated with the rotation.

Description

The installation of the valve timing control device and the valve timing control device of internal combustion engine Method
Technical field
It is variable control the present invention relates to being carried out to the opening and closing moment of inlet valve and exhaust valve according to internal combustion engine operation state The valve timing control device of internal combustion engine and the installation method of the valve timing control device.
Background technology
Valve timing control device as existing internal combustion engine, it is known to the device described in following patent document 1.
The valve timing control device has：Cylindric shell transmits rotary force from bent axle to it；Blade rotor, Set on the inside of the shell, have through cam bolt bolt-connection in the cylindric rotor on camshaft.
Also, by changing relative rotation phase of the blade rotor relative to above-mentioned shell, to inlet valve or exhaust valve The opening and closing moment (valve timing) carry out variable control.
In addition, in valve timing control device, multiple rectangles are formed in rotor and the internal perisporium of camshaft opposite side The groove portion of shape.The protrusion for the holding tool that the rotation of rotor is limited when each groove portion is formed as to be entrapped in bolt-connection Portion, also, each bearing surface abutted with the protrusion is formed as along the approximately radial planar of above-mentioned rotor.
About rotor, even if being intended to spiral shell due to the head sliding contact with above-mentioned cam bolt in above-mentioned bolt-connection In the case that bolt screws direction rotation, rotary force that when rotation generates is due to the above-mentioned holding work that is snapped into above-mentioned each groove portion Each protrusion of tool and be suppressed, thus can inhibit the rotation.
Existing patent document
Patent document
Patent document 1：(Japanese) Patent Laid-Publication 10-317923 bulletins
Invention content
Problems to be solved by the invention
But for above-mentioned rotor, it has been observed that each protrusion of the rotary force generated in bolt-connection because keeping tool Portion is suppressed, and on the other hand, the reaction force equal with above-mentioned rotary force acts on above-mentioned each groove portion from each protrusion Bearing surface.Also, there are following misgivings, which vertically acts on each bearing surface, and blade rotor is because of reaction force It is pushed expansion in outward direction and leads to expanding deformation.
The present invention is made in view of the project of the above-mentioned prior art, can inhibit convex it is intended that providing one kind On wheel shaft when bolt-connection blade rotor the rotation of the blade rotor and can inhibit with the rotation inhibit generate deformation gas The installation method of door timing control apparatus and the valve timing control device.
A technical solution to solve project
It is a feature of the present invention that having：Shell transmits rotary force from bent axle to it；Blade rotor is set to the shell Inside, have by cam bolt be connected and fixed on camshaft cylindrical shape rotor；Groove portion is set to above-mentioned rotor With the end face of above-mentioned camshaft opposite side, there is the one side for screwing direction opposite side with above-mentioned cam bolt；Above-mentioned side In face, compared to the axis of rotation of above-mentioned blade rotor is connected with the ora terminalis of the inner circumferential side of the above-mentioned rotor of above-mentioned one side and At imaginary plane, the ora terminalis of the peripheral side of above-mentioned one side is in by screwing opposite opposite of direction side with above-mentioned cam bolt The position of side.
Invention effect
In accordance with the invention it is possible to inhibit the rotation of the blade rotor in bolt-connection blade rotor on camshaft, and Inhibit to inhibit the deformation generated with the rotation.
Description of the drawings
Fig. 1 is to be indicated the valve timing control device of first embodiment of the invention with the line A-A cutting of Fig. 4 Overall structure figure；
Fig. 2 is the exploded perspective view of same valve timing control device；
Fig. 3 is the stereogram of same valve timing control device；
Fig. 4 is to unload foreboard and determine valve timing to be controlled to the same valve that the state in angle of lag side is indicated When control device front elevation；
Fig. 5 is to unload foreboard and determine the same valve for being indicated valve timing control in the state of advance side When control device front elevation；
Fig. 6 is the enlarged drawing in the portions supporting-line B of Fig. 1；
Fig. 7 is the front elevation of same valve timing control device；
Fig. 8 is the enlarged view of the main part of the groove portion for the blade rotor for indicating present embodiment；
Fig. 9 is the figure for the holding tool for indicating to use when valve timing control device is assemblied in camshaft, and (A) is to maintain The front elevation of tool, (B) are to maintain the side view of tool；
Figure 10 is the figure of the first step when indicating for valve timing control device to be assemblied in camshaft；
Figure 11 is the figure of the second step and the third step when indicating for valve timing control device to be assemblied in camshaft；
Figure 12 is the rotary force and the rotation to be generated between blade rotor and holding tool in vector representation the third step Turn the skeleton diagram of the reaction force of power；
Figure 13 is the enlarged view of the main part of the groove portion for the valve timing control device for indicating second embodiment of the invention.
Specific implementation mode
Hereinafter, being carried out specifically to each embodiment of the valve timing control device of the internal combustion engine of the present invention based on attached drawing It is bright.It should be noted that in each embodiment, the inlet valve side that above-mentioned valve timing control device is suitable for internal combustion engine is indicated The case where.
(first embodiment)
As shown in Figure 1, the valve timing control device of present embodiment has：Sprocket wheel 1 is passed through by bent axle (not shown) It is driven to rotate by timing chain；Camshaft 2 can be arranged with the relative rotation relative to the sprocket wheel 1；Phase transition mechanism 3, it configures between sprocket wheel 1 and camshaft 2, the relative rotation phase of the sprocket wheel 1 and camshaft 2 is converted；Oil pressure returns Road 4, the discharge based on oil pressure make the phase transition mechanism 3 work.
It is integrally formed with aftermentioned housing body 11 for above-mentioned sprocket wheel 1, and be provided integrally in week outside for upper State multiple gear part 1a of timing chain winding.
For above-mentioned camshaft 2, it is rotatably freely supported on cylinder head (not shown) via camshaft bearing, thereon one Multiple driving cams are equipped with to body, and is formed on the internal axis direction of one end 2a and is inserted into simultaneously for cam bolt 5 The bolt hole 6 of thread connection, wherein above-mentioned multiple driving cams have in the axial specified position of peripheral surface resists valve spring Acting force of the spring and make inlet valve (not shown) carry out breakdown action ellipse cam contour.
Above-mentioned cam bolt 5 has the head 5a, axle portion 5c and external thread part 5d of hexagon, and 5c is via flange shape for the axle portion Portions 5b be integrally set to the one end of head 5a, external thread part 5d is formed in the front end periphery of axle portion 5c, In the assembling work process of aftermentioned valve timing control device, clockwise direction from above-mentioned cam bolt 5 to Fig. 7 (hereinafter, Referred to as bolt screws direction D) rotation, thus with 6 thread connection of bolt hole.
Above-mentioned bolt hole 6 is formed with the internal thread part 6a of the external thread part 5d thread connections for cam bolt 5 in bottom side, Also, be formed as bigger than the outer diameter of axle portion 5c by the position of opening portion side than internal thread part 6a, bolt hole 6 inner peripheral surface with The i.e. cyclic annular oil circuit 27c of a part of aftermentioned angle of lag access 27 is separated between the peripheral surface of axle portion 5c.
As shown in figures 1-4, above-mentioned phase transition mechanism 3 has：Shell 7 is configured at the sides one end 2a of camshaft 2, There is operating chamber in inside；Blade rotor 8, is fixed on the one end 2a of above-mentioned camshaft 2, and relative rotation is accommodated in freely In shell 7；Four angle of lag operating chambers lag angle oil pressure chamber 9 and four advance angle operating chambers shift to an earlier date angle oil pressure chamber 10, Respectively by be provided integrally on the inner peripheral surface of the aftermentioned housing body 11 of shell 7 four first~the 4th (shoe) 15a~ Aftermentioned four blades 21a~21d of 15d and blade rotor 8 divides above-mentioned operating chamber and forms.
Above-mentioned shell 7 has：Substantially cylindric housing body 11, axial both ends open；Foreboard 11 closes the shell The front opening of phosphor bodies 11；Back plate 13 closes the open rearward end of housing body 11.Above-mentioned housing body 11 and foreboard 12 with And back plate 13 is integrally combined by being linked together four bolts 14 of the perforations such as aftermentioned each bolt insertion hole 16.
Above-mentioned housing body 11 is integrally formed by sintering metal part, is integrally set in the approximately axially middle position of periphery There is a sprocket wheel 1, and substantially inwardly side has integrally been provided projectingly aforementioned four for position at equal intervals in the circumferencial direction of inner peripheral surface One~four 15a~15d.
Above-mentioned each seat 15a~15d be shaped generally as when viewed from the front it is trapezoidal, and along respective internal axial breakthrough form At the bolt insertion hole 16 having for the insert of each bolt 14.In addition, for above-mentioned each seat 15a~15d, respective front end along Housing body 11 has been axially formed seal groove, and in each seal groove, is accommodated with and is slided with the peripheral surface of aftermentioned rotor 20 The seal member 17 of the substantially "U" font of contact.
In addition, in the peripheral surface of above-mentioned housing body 11, it is axially formed with the locating slot 11a of section U-shaped, is positioned Slot 11a is used for the positioning of housing body 11 and back plate 13 in a circumferential direction.
Above-mentioned foreboard 12 is formed as discoid by carrying out pressure forming to metallic plate, after middle position is equipped with confession State the through hole 12a for the relatively major diameter that the canister portion 23 of rotor 20 is inserted with specified gap.
In addition, position is formed through for the insert of each bolt 14 circumferencial direction of the above-mentioned foreboard 12 in peripheral side at equal intervals Four bolt hole 12b.Near the peritreme of the sides outer end face 12c of each bolt hole 12b, it is recessed with the head for above-mentioned each bolt 14 The circular face 12d that takes a seat that portion 14a takes a seat.When carrying out the connection of shell 7 by above-mentioned each bolt 14 as a result, each head 14a is not It can more forwards be protruded than outer end face 12c.
Further, as shown in FIG. 1 to 3, solid from being axially forced in the peripheral side of the outer end face 12c of above-mentioned foreboard 12 Surely pin 18 is taken the lead.
This is taken the lead pin 18 and has pin main body 18a and disk-shaped head 18b, and pin main body 18a is shaped generally as cylindric, head Portion 18b is provided integrally at the end with the indentation side opposite side of pin main body 18a.
For above-mentioned pin main body 18a, the pin main body is wound in by making the second of scroll spring 45 to engage end 45c On the peripheral surface of 18a, by the second locking end 45c lockings.
Head 18b has almost entirely covers that by the axial end face for selling the second locking end 45c wound on main body 18a The diameter of sample inhibits the second locking end 45c of scroll spring 45 to fall off from pin main body 18a to device front as a result,.
As shown in Figures 1 and 2, back plate 13 is formed by sintering metal part, is formed with above-mentioned camshaft 2 in middle thereof The support holes 13a that one end 2a is rotatably freely supported, also, in the circumferencial direction of peripheral side position at equal intervals, it is formed with confession It is formed in four internal thread holes of the external thread part 14c thread connections on the front end peripheral surface of the axle portion 14b of each bolt 14 13b。
In addition, as shown in Fig. 2, back plate 13 peripheral part, indentation be fixed with columned positioning pin 19, the positioning pin 19 The locating slot 11a of housing body 11 is caught in position in a rotational direction to carry out the housing body 11 and back plate 13.
Blade rotor 8 is for example integrally formed by sintering metal part, as shown in Figure 1 to 4, mainly by cylindric rotor 20 and four the first~the quaterfoil 21a~21d are constituted, and rotor 20 is fixed on by cam bolt 5 on camshaft 2, four the One~the quaterfoil 21a~21d is provided projectingly radially in the circumferencial direction substantially position at equal intervals of the peripheral surface of the rotor 20 It sets.
As shown in Figure 1, rotor 20 is formed through the bolt of the axle portion 5c inserts for cam bolt 5 in substantial middle position Hole 20a.In addition, between the inner peripheral surface and the peripheral surface of axle portion 5c of rotor 20, division has the one of aftermentioned angle of lag access 27 Part is annulus 27d.
The portions 5b of above-mentioned cam bolt 5 is supplied to fall in addition, front end face 20b central portions of the rotor 20 in 12 side of foreboard is recessed with The circular face 20c that takes a seat of seat.
Further, in the rear end face central portion of 13 side of back plate of above-mentioned rotor 20, it is formed with round concave embedded hole 20d.For embedded hole 20d, internal diameter is formed as more slightly larger than the outer diameter of the front ends one end 2a of camshaft 2, can be with this One end 2a is chimeric.
In addition, as shown in Figure 10, the specified position in the bottom surface peripheral side of embedded hole 20d is formed with the pin of section circle Hole 20e.In addition, in the inside of pin hole 20e, it is inserted into the one end configured with columned pin member 22.The pin member 22 is pressed from both sides Between pin hole 20e and cotter way 2b, the relatively rotation place to rotor 20 relative to camshaft 2 positions as a result, In, cotter way 2b is formed in the front end face peripheral part of the one end 2a of camshaft 2.
Further, as shown in FIG. 1 to 3, in the front end face 20b of rotor 20, it is provided projectingly the axis along rotor 20 To extended portion, that is, canister portion 23 of extension.
The canister portion 23 by be sintered it is integrally formed with rotor 20, also, be formed as with the rotor 20 it is concentric substantially justify Tubular.In addition, for canister portion 23, the front end sides 23a are prominent to the outside of shell 7 via the through hole 12a of foreboard 12, and In the head 5a of internal storage cam bolt 5.
In addition, in canister portion 23, the fastener being equipped with for the first locking end 45b lockings of aftermentioned scroll spring 45 engages Slot 24.As shown in Figure 2 to 4, which is formed in the circumferencial direction specified position of canister portion 23, and is formed as from front end face What is axially extended to base end side is rectangular-shaped.In addition, a pair of of opposite sides that the circumferencial direction along canister portion 23 of fastening groove 24 is opposite The one side 24a that side is engaged among face, for the first locking end 45b is formed as circular arc planar.
Further, in the approximately axially middle position of the peripheral surface of canister portion 23, circumferencial direction substantially the entire area is spread Ground is formed with the rectangular-shaped endless groove 25 in section.The endless groove 25 keeps one of the inner circumferential side of scroll spring 45 in internal storage Point, thus inhibit the inner circumferential side of the scroll spring 45 to fall off from device.
As shown in Figures 2 and 4, the first~the quaterfoil 21a~21d is arranged respectively between each seat 15a~15d, also, In seal groove on being each formed in arc-shaped peripheral surface, it is accommodated with respectively and the inner peripheral surface sliding contact of housing body 11 The substantially seal member 26 of "U" font.
In addition, in each blade 21a~21d, the first blade 21a is formed as maximum width, other the three second~the 4th leaves Piece 21b~21d is formed as the same widths smaller than the first blade 21a.
For the first blade 21a, when blade rotor 8 is rotated to maximum counter clockwise direction as shown in Figure 4, one side It is abutted with the opposite side of First 15a, limits the relatively rotation place of the maximum angle of lag side relative to shell 7.In blade When rotor 8 is rotated clockwise to maximum as shown in Figure 4, the opposite sides of the another side and second 15b of the first blade 21a Face abuts, the relatively rotation place of limitation full aduance side.
It should be noted that for blade 21b~21d in addition to above-mentioned first blade 21a, even if the first blade 21a be in is abutted with first, second 15a, 15b in the state of, also not on circumferencial direction in opposite directions any 15a~ 15d is abutted.The abutting precision improvement of first blade 21a and first, second 15a, 15b as a result, also, oil pressure is to each lag Angle, the feed speed that angle oil pressure chamber 9,10 supplies in advance are fast, and the rotation response of the both forward and reverse directions of blade rotor 8 improves.
It is each to lag angle oil pressure chamber 9 and respectively shift to an earlier date angle oil pressure chamber 10 via angle of lag side intercommunicating pore 9a and advance side intercommunicating pore 10a is respectively communicated with oil hydraulic circuit 4, and angle of lag side intercommunicating pore 9a and advance side intercommunicating pore 10a is along being radially formed in rotor 20 inside.
Oil hydraulic circuit 4 selectively carries out the supply to each angle of lag, the action oil for shifting to an earlier date angle oil pressure chamber 9,10；Each lag The discharge of angle, in advance the action oil in angle oil pressure chamber 9,10；And each angle of lag, action oil in angle oil pressure chamber 9,10 in advance It keeps；As shown in Figure 1, the oil hydraulic circuit 4 is mainly logical by angle of lag access 27, advance angle oil access 28, supply passageway 29, discharge Road 30 and pressure control valve, that is, electromagnetic switching valve 31 are constituted, angle of lag access 27 via each angle of lag side intercommunicating pore 9a with it is each stagnant Angle oil pressure chamber 9 is connected to afterwards, and advance angle oil access 28 connects via each advance side intercommunicating pore 10a and each advance side hydraulic chamber 10 It is logical, supply passageway 29 for for each angle of lag, angle oil pressure chamber 9,10 supplies in advance action oil stream it is logical, vent pathway 30 for from Each angle of lag, the action oil stream that angle oil pressure chamber 9,10 is discharged in advance are logical, electromagnetic switching valve 31 according to the operating condition etc. of internal combustion engine, Optionally switch supply passageway 29 and vent pathway 30 are relative to angle of lag, the connected state of advance angle access 27,28.
Angle of lag access 27 is formed as a series of access, and this series of access has：Angle of lag passage portion 27a, It is connected to the access mouth (not shown) of electromagnetic switching valve 31；Angle of lag via hole 27b is formed through along radial in camshaft 2 inside；Cyclic annular oil circuit 27c is formed between the inner peripheral surface of bolt hole 6 and the peripheral surface of the axle portion 5c of cam bolt 5；Ring Shape access 27d, is formed between the inner peripheral surface of rotor 20 and the peripheral surface of axle portion 5c, connects with each angle of lag side intercommunicating pore 9a It is logical.
Advance angle access 28 is formed as a series of access, and this series of access has：Advance angle passage portion 28a, It is connected to the supply mouth (not shown) of electromagnetic switching valve 31；Advance angle via hole 28b is formed through along radial in camshaft 2 inside；Four axial oilhole 28c, form across camshaft 2 and rotor 20, and with each advance side intercommunicating pore 10a It is respectively communicated with.
For supply passageway 29, upstream end is connected to via oil filter 32 with oil sump 33, and is held downstream and electromagnetism The floss hole (not shown) of switching valve 31 is connected to.In addition, above-mentioned supply passageway 29 has oil pump 34 in the midway of flow path, by this The action oil sucked from oil sump 33 is discharged oil pump 34 to 31 side of electromagnetic switching valve.
For vent pathway 30, upstream end is connected to the access mouth (not shown) of electromagnetic switching valve 31, and downstream with Oil sump 33 is connected to.
As shown in Figure 1, electromagnetic switching valve 31 is 3-position 4-way switching valve, by electronic controller 24 (not shown), make to The slide valve (not shown) being set in valve body freely that slides axially moves in the longitudinal direction, makes supply passageway 29 and each oil Make the oily access 28 (27) of vent pathway 30 and another party even while oily access 27 (28) connection of a side in access 27,28 It is logical, or the connection between each access 27~30 is cut off.
For electronic controller, internal computer input from crank angle sensor (not shown), air flow meter, Internal combustion engine water temperature sensor, engine load sensor and the cam angle biography that the current rotatable phase of camshaft 2 is detected The information signal of the various sensor classes such as sensor, to detect current internal combustion engine operation state.Then, in being detected based on this Combustion engine operating condition exports the movement of control pulse current appropriate and spool control valve body to the electromagnetic coil of electromagnetic switching valve 31 Position, the thus connection between each access 27~30 switch over control.
In addition, between the first blade 21a and back plate 13, most lagged equipped with blade rotor 8 is limited in relative to shell 7 The locking mechanism 35 of Angle Position.
As shown in Fig. 4~Fig. 6, the locking mechanism 35 is mainly de- by sliding hole 36, locking pin 37, lock hole 38 and card Mechanism is constituted, and sliding hole 36 is axially formed through in the inside of the first blade 21a, and locking pin 37 is sliding freely stored In in the sliding hole 36, and movably it is arranged relative to 13 side of back plate, lock hole 38 is formed in the radial big of back plate 13 Cause central specified position, and engage for the aftermentioned small diameter portion 37a of locking pin 37 and lock blade rotor 8, card release mechanism according to The small diameter portion 37a of locking pin 37 is engaged with lock hole 38 or releases the engaging by the starting state of internal combustion engine.
For sliding hole 36, particularly, as shown in fig. 6, inner circumferential surface is formed as radial step-like, there is back plate 13 The major diameter hole portion 36b of 12 side path hole portion 36a and foreboard of side, also, between the path hole portion 36a and major diameter hole portion 36b It is formed with circular first step portion 36c.
The peripheral surface of locking pin 37 is formed as radial step-like, which, which has, is slidably housed in sliding use The small diameter portion 37a of 13 side of back plate (front end side) in the path hole portion 36a in hole 36 and it is slidably housed in major diameter hole portion The large-diameter portion 37b of 12 side of foreboard in 36b.In addition, between small diameter portion 37a and large-diameter portion 37b, it is formed with circular the Two stage portion 37c.Rear end face in 12 side of foreboard of locking pin 37 is stored along the internal axial concave spring of circle that is formed with Slot 37d.
Lock hole 38 configures the circumferencial direction specified position for being formed in following back plate 13：There are the feelings of locking pin 37 in engaging Under condition, the opposite conversion angle of shell 7 and blade rotor 8 is most advanced angle.
In addition, lock hole 38 is formed as outer diameter of its internal diameter more than the small diameter portion 37a of locking pin 37, also, in inner peripheral surface Embedded with circular ring component 39, which can insert the small diameter portion 37a of locking pin 37.The ring component 39 is by wearability Material is formed, even if being slided repeatedly with the small diameter portion 37a peripheral surfaces of locking pin 37 in inner circumferential surface as the card of locking pin 37 is de- In the case of dynamic contact, abrasion etc. also can inhibit.
Card release mechanism has：The spring of helical spring 40, the inner face and locking pin 37 that are elastically mounted to foreboard 12 is received It receives between the bottom surfaces slot 37d, direction of marching forward always exerts a force to the locking pin 37；First, second balancing gate pit 41,42, based on confession To the oil pressure to inside, locking pin 37 is made to move in the reverse direction.
For helical spring 40, the case where blade rotor 8 lags Angle Position relative to 7 relative rotation of shell to maximum Under, make to make the front ends small diameter portion 37a of the locking pin 37 be caught in lock hole by the advance of locking pin 37 is mobile by its acting force of the spring In 38, blade rotor 8 is made to be locked relative to shell 7 as a result,.
First pressure room 41 be the second step portion 37c of first step portion 36c and the locking pin 37 of sliding hole 36 it Between the circular space that is separated into, separate with by the first blade 21a in the first oil circuit 43 on peripheral wall via being formed through At the connection of lag angle oil pressure chamber 9 (with reference to Fig. 4).In addition, for above-mentioned first pressure room 41, when to its internal supply action When oily, the oil pressure of action oil is made to act on the second step portion 37c of locking pin 37, and the locking pin 37 is applied in the reverse direction Power.
Second pressure room 42 is formed in lock hole 38 as the cylindrical space than the small diameter portion 37a paths of locking pin 37 Bottom surface, also, via the second oil circuit 44 of the long canal shape being formed on peripheral wall and with by the first blade 21a be separated into advance The connection of angle oil pressure chamber 10 (with reference to Fig. 4).In addition, for above-mentioned second pressure room 42, when to its internal supply action oil, make The oil pressure of action oil acts on the front end face of locking pin 37, and exerts a force in the reverse direction to the locking pin 37.
In addition, as shown in Fig. 1~3 and Fig. 7, in the outer end face 12c of foreboard 12, it is equipped with relative to shell 7 to advance angle Force application part, that is, scroll spring 45 that direction exerts a force to blade rotor 8.
The scroll spring 45 is made of scroll spring main body 45a, the first locking end 45b and the second locking end 45c, Wherein, scroll spring main body 45a makes the flat rectangular line of cross section substantially rectangular shape with the opposite side in the face of length direction Formula is wound on substantially same plane, slowly expanding from inner circumferential side to peripheral side；First locking end 45b makes the scrollwork bullet The one end of the inner circumferential side of spring main body 45a is bent to radially inner side；Second locking end 45c makes that scroll spring main body 45a's is outer The other end of side to radial outside semicircle it is hook-shaped be bent.
In scroll spring main body 45a, the part storage configuration of the most inner peripheral portion of the first locking end sides 45b is being formed in The inside of endless groove 25 in canister portion 23, also, the outermost circumference of the second locking end sides 45c is by fulcrum post 46 (with reference to Fig. 3) Bearing, the fulcrum post 46 are pressed into the outer end face 12c for being fixed on foreboard 12.The fulcrum post 46 supports the outermost circumference of scroll spring 45 To which the scroll spring 45 can carry out stable force action between shell 7 and blade rotor 8, also, in scroll spring 45 When being deformed to hole shrinkage direction, the scroll spring 45 is made to be generated from fulcrum post 46 abutted position to the second locking end 45c Torque increases.
First locking end 45b is caught in the fastening groove 24 of canister portion 23, and engages the one side for being fixed on the fastening groove 24 24a.On the other hand, the pin master for taking the lead pin 18 in the outer end face 12c settings of foreboard 12 is fixed in the second locking end 45c lockings Body 18a peripheral surfaces.
With this configuration, scroll spring 45 exerts a force to blade rotor 8 to angular direction in advance relative to shell 7 as aforementioned, but The applied force is not so that 8 active of blade rotor is rotated such high forces to advance side, and be set to following degree：It can With negative alternate torque (the alternation torsion for making blade rotor 8 be rotated to angle of lag side generated on camshaft 2 when internal combustion engine operation Square) balance.
That is, the phase transition of blade rotor 8 completely by supply to each angle of lag, in advance angle oil pressure chamber 9,10 oil pressure into Row, the applied force that scroll spring 45 generates are the complementary active force kept for the phase of blade rotor 8.
Also, in canister portion 23, as shown in Fig. 2~4, Fig. 7 and Fig. 8, in circumferencial direction, position is set there are three tool at equal intervals The groove portion 47 of snapin part, that is, U-shaped, the groove portion 47 are caught in bolt-connection for the protrusion 54 that is caught in of aftermentioned holding tool 52.
As shown in fig. 7, each groove portion 47 has：First bearing surface, that is, one side 47a is set to and screws direction D with bolt Opposite side；Second bearing surface, that is, another side 47b, it is opposite with the one side；The bottom surface 47c of circular arc planar, by two sides 47a, 47b are connected.
As shown in figure 8, with by canister portion 23 (rotor 20) inner circumferential side of the axis of rotation O of blade rotor 8 and one side 47a The first imaginary plane S1 is compared made of ora terminalis 47d is connected, and one side 47a is formed as screwing direction D opposite sides inclination to bolt It is planar.In other words, the ora terminalis 47f of the peripheral side of the canister portion 23 (rotor 20) of one side 47a is arranged than the first imaginary plane S1 leans on the position that direction D opposite sides are screwed with bolt.
On the other hand, with by canister portion 23 (rotor 20) inner circumferential side of the axis of rotation O of blade rotor 8 and another side 47b Ora terminalis 47e be connected made of the second imaginary plane S2 compare, another side 47b is formed as screwing direction D to bolt inclined flat Planar.In other words, the ora terminalis 47g of the peripheral side of the canister portion 23 (rotor 20) of another side 47b is arranged than the second imaginary plane S2 The position of the direction sides D is screwed by bolt.
That is, each groove portion 47 is formed as, the width (groove width) of 23 circumferencial direction of canister portion is out of this canister portion 23 when front is observed " Ha " word shape that side is gradually expanded towards peripheral side.
In addition, for each groove portion 47, particularly as shown in Figure 10, groove depth be formed as than canister portion 23 axial length slightly It is short, and bottom surface is located at positions of the front end face 20b in front of device than rotor 20, i.e. by the position of the front end 23a of canister portion 23 It sets.
In addition, relativeness of the above-mentioned fastening groove 24 based on itself and each groove portion 47, determines on the circumferencial direction of canister portion 23 Forming position.
That is, as shown in figure 8, specific adjacent groove portion 47,47 of the configuration of fastening groove 24 on the circumferencial direction of canister portion 23 it Between, and its equipping position P1 is slightly biased to than the centre position P0 between two groove portions 47,47 on the circumferencial direction of canister portion 23 and spiral shell Bolt screws the direction of direction D opposite sides.
(installation method of valve timing control device)
It has been observed that valve timing control device is installed relative to camshaft 2 by the connection of cam bolt 5.The connection When operation, join using in common bolt of the end with the fitting portion 51a chimeric with the head 5a of the hexagon of cam bolt 5 Bonding tool, that is, die nut 51 (referring to Fig.1 1) and the holding blade rotor 8 when carrying out connection operation by the die nut 51 Holding tool 52.
As shown in Fig. 9 (A), (B), holding tool 52 is integrally formed by metal material, by cylindric base portion 53, Three handle parts 55 for being caught in protrusion 54 and extending from the peripheral surface of base portion 53 that the axial end face of the base portion 53 is provided projectingly It constitutes.
Base portion 53 be formed as with the substantially same diameter of the canister portion of blade rotor 8 23, also, be formed through hole portion and insert Hole 53a, inserting hole 53a can insert the die nut 51 being clamped with the head 5a of cam bolt 5.
As shown in Fig. 9 (A), the configuration of protrusion 54 is respectively caught in the circumferencial direction substantially position at equal intervals of base portion 53, also, point Be not formed as shape corresponding with each groove portion 47 of canister portion 23, can be caught in relative to above-mentioned each groove portion 47.
It is shaped generally as sector when that is, being caught in 54 front observation of protrusion, is had：First locking surface 54a blocks to groove portion 47 It is fashionable opposite with the one side 47a of the groove portion 47；Second locking surface 54b, it is opposite with the another side 47b of groove portion 47.
Then, it is based on Figure 10~Figure 12, according to the installation relative to camshaft 2 of specification valve timing control device Operation.
First, as the first step, as shown in Figure 10, the state that the component in addition to scroll spring 45 is completed in advance Under above-mentioned valve timing control device relative to camshaft 2 from being axially inserted into, make the embedded hole 20d of rotor 20 and the camshaft 2 one end 2a is chimeric.
At this moment, above-mentioned blade rotor 8 is limited in most stagnant since locking pin 37 engages with lock hole 38 relative to shell 7 Angle Position afterwards, also, carried out relative to the positioning on the circumferencial direction of camshaft 2 by pin member 22.
Secondly, as the second step, after cam bolt 5 to be inserted into the bolt hole 6 of camshaft 2, as shown in figure 11, along this The axial direction of cam bolt 5 makes each groove portion 47 for being respectively caught in protrusion 54 and being caught in canister portion 23 from axial direction of holding tool 52.
Then, as the third step, the fitting portion 51a of 51 front end of die nut is made to insert to the inserting hole of holding tool 52 In 53a, and after keeping it chimeric with the head 5a of cam bolt 5, the handle part 55 of holding tool 52 is held, and makes die nut 51 screw direction D rotations to bolt.
At this moment, as shown in figure 12, blade rotor 8 with rotation cam bolt 5 portions 5b sliding contacts, be thus intended to with The mode that portions 5b interlocks rotation screws direction D rotations to bolt.But by holding each of fixed holding tool 52 The the first locking surface 54a for being caught in protrusion 54 is abutted with the one side 47a of each groove portion 47, and thus rotation is suppressed.As a result, pressing from both sides The periphery of peripheral surface and the locking pin 37 being caught in lock hole 38 loaded on the pin member 22 between blade rotor 8 and camshaft 2 Big shearing force will not be acted on face, thus, it is possible to inhibit the deformation of above-mentioned each pin 22,37.
Then, after the external thread part 5d for making cam bolt 5 couples with the internal thread part 6a perfect threads of bolt hole 6, make For the 4th process, scroll spring 45 is installed in the sides outer end face 12c of foreboard 12, as a result, valve timing control device relative to convex The installation exercise of wheel shaft 2 is completed.
It should be noted that in the case where valve timing control device is unloaded from camshaft 2, by with above-mentioned installation The process of flow chart backward carries out removal operation.In this case, keeping the second locking surface for being respectively caught in protrusion 54 of tool 52 54b is abutted with the another side 47a of each groove portion 47, to inhibit blade rotor 8 to the direction for unscrewing cam bolt 5 (with spiral shell Bolt screws direction opposite direction) rotation.As a result, even if can press down if in the removal operation of valve timing control device Make and sell the deformation of component 22 and locking pin 37.
(function and effect of present embodiment)
Based on above structure, valve timing control device according to the present embodiment, according to the operating condition of internal combustion engine, not The electronic controller of diagram makes control electric current suitably flow through the coil of electromagnetic switching valve 31, switches each access 27~30 as a result, Connected state.Then, the switching based on the connected state, each oil pressure for lagging angle oil pressure chamber 9 and respectively shifting to an earlier date angle oil pressure chamber 10 close System is changed, and correspondingly, blade rotor 8 is converted relative to the relative rotation phase of shell 7 (sprocket wheel 1) to being represented in Fig. 4 most The most advanced angle phase indicated in angular phasing and Fig. 5 is lagged, the valve timing of internal combustion engine is changed.
In addition, in the valve timing control device of present embodiment, when internal combustion engine operation, will be each by electromagnetic switching valve 31 The connection of access 27~30 is cut off, and maintenance action oil is respectively fed to each lag angle oil pressure chamber 9 and respectively shifts to an earlier date angle oil pressure chamber 10 Internal state, thereby, it is possible to the valve timing of internal combustion engine is maintained at desired phase.
Particularly, in present embodiment, the scrollwork to exert a force to angular direction in advance to blade rotor 8 relative to shell 7 is set Spring 45, thus, it is easy to get by the acting force of the spring of the scroll spring 45 and is produced on camshaft 2 when internal combustion engine operation The balance of raw negative alternate torque, so, it can be easy and precisely keep valve timing.
In addition, in present embodiment, the force application part that scroll spring 45 is used as keeping for the phase, thus, and make It is compared with the situation of torsional spring etc., axial width substantially shortens, so it is capable of the densification of realization device.
Also, in present embodiment, it is suppressed that when the installation exercise relative to camshaft 2 of valve timing control device The deformation of blade rotor 8.
Just as the present embodiment, make each groove portion 47 for being respectively caught in protrusion 54 and being caught in blade rotor 8 of holding tool 52 And for the valve timing control device of the rotation of the blade rotor 8 when inhibiting bolt-connection, as shown in figure 12, blade rotor 8 Rotary force F1 be suppressed by being respectively caught in the first locking surface 54a of protrusion 54, it is and at the same time, equal with rotary force F1 Reaction force (load) F2 acts on the one side 47a of each groove portion 47.
At this moment, when above-mentioned reaction force F2 is had to the vector component in 8 outer diameter direction of blade rotor, blade rotor 8 has can Can the expanding deformation in outward direction due to reaction force F2, and in present embodiment, it has been observed that with compared with the first imaginary plane S1 The inclined mode of direction D opposite sides is screwed to bolt, forms the one side 47a of each groove portion 47, thus, reaction force F2 has To the vector component F2 of the internal diameter direction of blade rotor 8rad, and act as relative to each one side 47a to inward side to indentation leaf Piece rotor 8.
Blade rotor 8 is pushed expansion in outward direction based on reaction force F2 when can inhibit bolt-connection as a result, because And the expanding deformation of blade rotor 8 can be effectively inhibited.
Therefore, according to the present embodiment, the blade rotor 8 when the camshaft 2 by 8 bolt-connection of blade rotor can be inhibited Rotation, and can also inhibit the rotation inhibit when blade rotor 8 deformation.
It should be noted that above-mentioned function and effect are effective especially in the valve timing control device of present embodiment, That is, the canister portion 23 of the relatively thin-walled (Low rigidity) engaged for scroll spring 45 in blade rotor 8 is formed with each groove portion 47.
In addition, in the case of the intensity for above-mentioned canister portion 23 of worrying, following method can also be used：The canister portion 23 is formed as Heavy wall and make intensity improve or canister portion 23 is formed by another component with high rigidity, still, there are the heavy walls of canister portion 23 for the former The problem of installation weight caused by changing increases, it is multifarious to there is the assembling work generated with the increase of amount of parts in the latter Problem.
In contrast, in present embodiment, it is above-mentioned rotor 20 and canister portion 23 is integrally formed and completely anti-by designing The action direction of directed force F 2 bears reaction force F2, thus, it is possible to inhibit the canister portion 23 generated based on reaction force F2 Deformation without make device weight and amount of parts increase.
In addition, in present embodiment, the setting of fastening groove 24 of the first locking end 45b lockings for scroll spring 45 is existed The position not interfered with each groove portion 47 of the circumferencial direction of canister portion 23, thus, in bolt-connection operation, it not will produce card Only slot 24 interferes such problem with holding tool 52, will not destroy the workability of bolt-connection.
Further, in present embodiment, the equipping position P1 of above-mentioned fastening groove 24 is set as more specific than canister portion 23 Circumferencial direction centre position P0 between two groove portions 47,47 is biased to screw the direction of direction D opposite sides with bolt.As a result, such as Shown in Figure 12, it is ensured that in wall portion 23b, 23c between the specific groove portion 47,47 of canister portion 23, prominent from being caught in for holding tool 52 The area of section for playing the 54 wall portion 23b for bearing the sides reaction force F2 (bolt screws the direction sides D) is big, thus, 8 phase of blade rotor It will not decline to a great extent for the intensity of reaction force F2.Even if can fully be supported if as a result, being for example provided with fastening groove 24 Anti-reflective directed force F 2.
In addition, in present embodiment, the another side 47b of above-mentioned each groove portion 47 is formed as compared with the second imaginary plane S2 It is inclined planar that direction D is screwed to bolt, thus, is broken down in above-mentioned valve timing control device and from camshaft 2 Under the case where unloading etc., with the reaction force F4 for the rotary force F3 that the unscrewing action of cam bolt 5 generates on blade rotor 8 The vector component F4 of internal diameter direction with blade rotor 8rad.As a result, above-mentioned reaction force F4 act as relative to canister portion 23 to Interior direction is pressed into, thus, even if the expanding deformation of blade rotor 8 can be inhibited if when unloading cam bolt 5.
Further, in present embodiment, above-mentioned each groove portion 47 is formed as into following groove depth：Bottom surface 47c is than rotor 20 Front end face 20b depends on the front end 23a of canister portion 23, thus, each groove portion 47 does not interfere with the inside of rotor 20, each groove portion 47 at Shape is good.
In addition, in present embodiment, the bottom surface 47c of above-mentioned each groove portion 47 is formed as into arc-shaped, thus, in bolt-connection When reaction force F2 act on canister portion 23 in the case of, it is difficult to generate the stress concentration to the specific position of canister portion 23, so The deformation of the canister portion 23 can be further suppressed.
(second embodiment)
Figure 13 indicates second embodiment of the present invention, and basic structure is identical with first embodiment, and changes State the shape of the another side 47b of each groove portion 47.
Substantially, dismounting will not be repeated relative to camshaft 2 in above-mentioned valve timing control device, but once installs Device as the state is maintained for a long time.Additionally, there are following tendencies：With generated on blade rotor 8 when bolt-connection Rotary force F1 compare, the rotary force F3 that when 5 removal of cam bolt generates on blade rotor 8 is smaller.
In view of these actual conditions, in present embodiment, by the another side 47b of above-mentioned each groove portion 47 be formed as with it is above-mentioned Second imaginary plane S2 compares inclined planar to direction D opposite sides are screwed with bolt.
Can there is a possibility that some blade rotors 8 are deformed to expanding direction when cam bolt 5 being unscrewed as a result, still Compared to the valve timing control device of above-mentioned first embodiment, the groove width (length of 23 circumferencial direction of canister portion) of groove portion 47 is narrow And can ensure that the area of section of canister portion 23 is big, thus, it is possible to which the intensity of the canister portion 23 is made to improve.As a result, it is possible to further The deformation of blade rotor 8 when inhibition bolt-connection.
Other function and effect are identical with first embodiment.
The present invention is not limited to the structures of the respective embodiments described above, can also change it without departing from the spirit of the invention Structure.
For example, in the respective embodiments described above, each groove portion 47 is set in the canister portion 23 of rotor 20, however, it can be, cancels Canister portion 23 and in the front end face 20b of rotor 20, each groove portion 47 is set.
In addition, in the respective embodiments described above, canister portion 23 is set in the front end face 20b of rotor 20, also, make holding tool 52 Each groove portion 47 for being respectively caught in protrusion 54 and being caught on the front end face for being formed in the canister portion 23, to inhibit the rotation of blade rotor 8. It however, it can be, cancel canister portion 23, also, multiple protrusions are provided projectingly in the front end face 20b of rotor 20, make holding work The protrusion 54 that is respectively caught in of tool 52 is caught between each protrusion, and make above-mentioned each protrusion screws the formation of the direction sides D in bolt The first locking surface 54a that one side is respectively caught in protrusion 54 with this is engaged, and thus inhibits the rotation of blade rotor 8.
Valve timing control device as the internal combustion engine based on each embodiment described above and the valve timing control The installation method of device processed, such as, it is contemplated that following aspects.
The valve timing control device of internal combustion engine has in its one side：Shell transmits rotary force from bent axle to it； Blade rotor is set to the inside of the shell, has and is connected and fixed in the cylindric rotor on camshaft by cam bolt； Groove portion is set to the end face with above-mentioned camshaft opposite side of above-mentioned rotor, has and screws direction phase with above-mentioned cam bolt The one side tossed about；In above-mentioned one side, compared to by above-mentioned turn of the axis of rotation of above-mentioned blade rotor and above-mentioned one side Imaginary plane made of the ora terminalis of the inner circumferential side of son is connected, the ora terminalis of the peripheral side of above-mentioned one side, which is in, to be leaned on and above-mentioned cam bolt The position for screwing the opposite opposite side in direction.
In the preferred aspect of the valve timing control device of above-mentioned internal combustion engine, above-mentioned blade rotor have be set to it is above-mentioned convex The end of wheel shaft opposite side and the cylindric canister portion extended to the outside of above-mentioned shell, above-mentioned groove portion is set on above-mentioned canister portion.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, the gas of internal combustion engine Door timing control apparatus be characterized in that, between above-mentioned canister portion and above-mentioned shell be equipped with force application part, the one of the force application part End and above-mentioned canister portion engage and the other end is engaged with above-mentioned shell, and the force application part to above-mentioned blade rotor relative to upper The direction of rotation side for stating shell rotation exerts a force to above-mentioned blade rotor, and above-mentioned groove portion is equipped with along the circumferencial direction of above-mentioned canister portion It is multiple, also, the position among above-mentioned canister portion, between the groove portion of specific adjacent pair, it is formed with for above-mentioned force application part One end locking fastening groove.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, compared to above-mentioned Circumferencial direction centre position between the groove portion of the above-mentioned specific adjacent pair of canister portion, above-mentioned fastening groove are biased to and above-mentioned cam Bolt screws the opposite opposite side in direction.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, above-mentioned groove portion tool There is an another side being oppositely arranged with above-mentioned one side, in above-mentioned another side, compared to by the rotary shaft of above-mentioned blade rotor Imaginary plane made of the heart is connected with the ora terminalis of the inner circumferential side of the above-mentioned canister portion of above-mentioned another side, the peripheral side of above-mentioned one side Ora terminalis is in by the position for screwing direction of above-mentioned cam bolt.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, above-mentioned groove portion tool There is an another side being oppositely arranged with above-mentioned one side, in above-mentioned another side, compared to by the rotary shaft of above-mentioned blade rotor Imaginary plane made of the heart is connected with the ora terminalis of the inner circumferential side of the above-mentioned canister portion of above-mentioned another side, the peripheral side of above-mentioned one side Ora terminalis be in by with the position of the opposite side that screw direction opposite of above-mentioned cam bolt.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, above-mentioned groove portion Bottom surface configuration is in the position for leaning on above-mentioned canister portion with the end face of above-mentioned camshaft opposite side than above-mentioned rotor.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, above-mentioned groove portion Above-mentioned bottom surface is formed as circular arc planar.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, above-mentioned force section Part is the spring of scroll.
In another preferred aspect, in the either side of the valve timing control device of above-mentioned internal combustion engine, above-mentioned canister portion is logical Oversintering and above-mentioned rotor are integrally formed.
In addition, the valve timing control device of internal combustion engine has from another viewpoint：Shell is transmitted from bent axle to it Rotary force, and it has operating chamber in inside；Blade rotor is set to the inside of the shell, has cylindric rotor and leaf Piece, the rotor of the cylindrical shape are connected and fixed by cam bolt on camshaft, the blade be set to the peripheral side of above-mentioned rotor and Above-mentioned operating chamber is separated into angle of lag operating chamber and advance angle operating chamber；Extended portion, be set to above-mentioned rotor with it is upper The end for stating camshaft opposite side is extended to the outside of above-mentioned shell；Force application part, one end are extended with above-mentioned Portion engages and the other end is engaged with above-mentioned shell, the direction of rotation side rotated to above-mentioned blade rotor relative to above-mentioned shell It exerts a force to above-mentioned blade rotor；Groove portion is set to the front end of above-mentioned extended portion, has first for keeping tool abutting Bearing surface, the holding tool limit above-mentioned rotor rotation when above-mentioned cam bolt couples；Above-mentioned first bearing surface is formed as, The vector for limiting the load being subject to from above-mentioned holding tool when above-mentioned rotor rotation has the component of above-mentioned rotor internal diameter direction.
In the preferred aspect of the valve timing control device of the above-mentioned internal combustion engine from another viewpoint, above-mentioned groove portion along The circumferencial direction of above-mentioned extended portion be equipped with it is multiple, also, among above-mentioned extended portion, the slot of specific adjacent pair Position between portion is formed with the fastening groove engaged for the one end of above-mentioned force application part.
In another preferred aspect, in either one of the valve timing control device of the above-mentioned internal combustion engine from another viewpoint In face, compared to the circumferentially intermediate position between the groove portion of the above-mentioned specific adjacent pair of above-mentioned extended portion, above-mentioned card Only slot is biased to the opposite side that screw direction opposite with above-mentioned cam bolt.
In another preferred aspect, in either one of the valve timing control device of the above-mentioned internal combustion engine from another viewpoint In face, above-mentioned extended portion is integrally formed with above-mentioned rotor by being sintered.
In addition, from another viewpoint, the valve timing control device of internal combustion engine has：Shell is transmitted from bent axle to it Rotary force, and it has operating chamber in inside；Blade rotor is set to the inside of the shell, has cylindric rotor and leaf Piece, the rotor of the cylindrical shape are connected and fixed by cam bolt on camshaft, the blade be set to the peripheral side of above-mentioned rotor and Above-mentioned operating chamber is separated into angle of lag operating chamber and advance angle operating chamber；Protrusion, be set to above-mentioned rotor with it is above-mentioned convex The end face of wheel shaft opposite side；Above-mentioned protrusion has one side at the position for screwing direction side of above-mentioned cam bolt, and will be upper State the axis of rotation of blade rotor and the above-mentioned rotor inner circumferential side of above-mentioned one side ora terminalis be connected made of imaginary plane compare, on Side is stated to tilt towards the direction opposite side that screws with above-mentioned cam bolt.
In addition, from another viewpoint, in the installation method of the valve timing control device of internal combustion engine, the gas of the internal combustion engine Door timing control apparatus has：Shell transmits rotary force from bent axle to it, and it has operating chamber in inside；Blade rotor, Set on the inside of the shell, there is cylindric rotor and blade, the rotor of the cylindrical shape by cam bolt be connected and fixed in On camshaft, which is set to the peripheral side of above-mentioned rotor and above-mentioned operating chamber is separated into angle of lag operating chamber and angular motion in advance Make room；Tool snapin part is set to the end face with above-mentioned camshaft opposite side of above-mentioned rotor, has opposite with following direction One side：The direction of the direction opposite side coupled with by above-mentioned cam bolt；With by the rotary shaft of above-mentioned blade rotor and above-mentioned Imaginary plane is compared made of the ora terminalis of the inner circumferential side of the above-mentioned rotor of one side is connected, above-mentioned side towards with above-mentioned cam bolt The direction opposite side of screwing tilt, wherein the installation method of the valve timing control device of the internal combustion engine has following process：Make The end face of above-mentioned rotor is contacted with the end face of above-mentioned camshaft；Holding tool is caught in above-mentioned tool snapin part, the holding tool With protrusion and hole portion is caught in, this, which is caught in protrusion, can be caught in above-mentioned tool snapin part, and the hole portion is for the above-mentioned cam bolt of progress Connection connection tool insert；Above-mentioned connection tool is inserted in the above-mentioned hole portion of above-mentioned holding tool, passes through the connection tool Above-mentioned cam bolt is coupled.

Claims (10)

1. a kind of valve timing control device of internal combustion engine, which is characterized in that have：
Shell transmits rotary force from bent axle to it；
Blade rotor is set to the inside of the shell, has and is connected and fixed in the cylindrical shape on camshaft by cam bolt Rotor；
Groove portion is set to the end face with the camshaft opposite side of the rotor, has the side of screwing with the cam bolt To the one side of opposite side；
In the one side, compared to by the inner circumferential side of the axis of rotation of the blade rotor and the rotor of the one side Ora terminalis be connected made of imaginary plane, the ora terminalis of the peripheral side of the one side is in by screwing direction with the cam bolt The position of opposite opposite side.
2. the valve timing control device of internal combustion engine according to claim 1, which is characterized in that
The blade rotor has the external cylinder extended being set to the end of the camshaft opposite side and to the shell The canister portion of shape,
The groove portion is set to cartridge.
3. the valve timing control device of internal combustion engine according to claim 2, which is characterized in that
Be equipped with force application part between cartridge and the shell, the one end of the force application part and cartridge locking and it is another One end is engaged with the shell, and the direction of rotation one that the force application part is rotated to the blade rotor relative to the shell Side exerts a force to the blade rotor,
The groove portion along cartridge circumferencial direction be equipped with it is multiple, also,
Position among cartridge, between the groove portion of specific adjacent pair is formed with one end for the force application part The fastening groove of portion's locking.
4. the valve timing control device of internal combustion engine according to claim 3, which is characterized in that
Compared to the circumferencial direction centre position between the groove portion of the specific adjacent pair of cartridge, the fastening groove It is biased to the opposite side that screw direction opposite with the cam bolt.
5. the valve timing control device of internal combustion engine according to claim 2, which is characterized in that
The groove portion has the another side being oppositely arranged with the one side,
In the another side, compared to will be in the cartridge of the axis of rotation of the blade rotor and the another side The ora terminalis of imaginary plane made of the ora terminalis of side is connected, the peripheral side of the one side is in by the side of screwing of the cam bolt To position.
6. the valve timing control device of internal combustion engine according to claim 2, which is characterized in that
The groove portion has the another side being oppositely arranged with the one side,
In the another side, compared to will be in the cartridge of the axis of rotation of the blade rotor and the another side Imaginary plane made of the ora terminalis of side is connected, the ora terminalis of the peripheral side of the one side are in by being screwed with the cam bolt The position of the opposite opposite side in direction.
7. the valve timing control device of internal combustion engine according to claim 2, which is characterized in that
Cartridge is integrally formed with the rotor by being sintered.
8. a kind of valve timing control device of internal combustion engine, which is characterized in that have：
Shell transmits rotary force from bent axle to it, and it has operating chamber in inside；
Blade rotor is set to the inside of the shell, has cylindric a rotor and blade, and the rotor of the cylindrical shape passes through convex Wheel bolt-connection is fixed on camshaft, which is set to the peripheral side of the rotor and the operating chamber is separated into angle of lag Operating chamber and advance angle operating chamber；
Extended portion is set to the end with the camshaft opposite side of the rotor, and external to the shell extends Setting；
Force application part, one end engages and the other end and shell locking with the extended portion, to the blade Rotor exerts a force to the blade rotor relative to the direction of rotation side that the shell rotates；
Groove portion is set to the front end of the extended portion, has the first bearing surface for keeping tool to abut, the holding work Tool limits the rotor rotation when the cam bolt couples；
First bearing surface is formed as, in the vector tool for limiting the load being subject to from the holding tool when rotor rotation There is the component of the internal diameter direction of the rotor.
9. a kind of valve timing control device of internal combustion engine, which is characterized in that have：
Shell transmits rotary force from bent axle to it, and it has operating chamber in inside；
Blade rotor is set to the inside of the shell, has cylindric a rotor and blade, and the rotor of the cylindrical shape passes through convex Wheel bolt-connection is fixed on camshaft, which is set to the peripheral side of the rotor and the operating chamber is separated into angle of lag Operating chamber and advance angle operating chamber；
Protrusion is set to the end face with the camshaft opposite side of the rotor；
The protrusion has one side at the position for screwing direction side of the cam bolt,
With the ora terminalis of the axis of rotation of the blade rotor and the rotor inner circumferential side of the one side is connected made of it is false Think that face is compared, the side is tilted towards the direction opposite side that screws with the cam bolt.
10. the valve timing control device of a kind of installation method of the valve timing control device of internal combustion engine, the internal combustion engine has：
Shell transmits rotary force from bent axle to it, and it has operating chamber in inside；
Blade rotor is set to the inside of the shell, has cylindric a rotor and blade, and the rotor of the cylindrical shape passes through convex Wheel bolt-connection is fixed on camshaft, which is set to the peripheral side of the rotor and the operating chamber is separated into angle of lag Operating chamber and advance angle operating chamber；
Tool snapin part is set to the end face with the camshaft opposite side of the rotor, has opposite with following direction One side：The direction of the direction opposite side coupled with by the cam bolt；
With the ora terminalis of the rotary shaft of the blade rotor and the inner circumferential side of the rotor of the one side is connected made of it is false Think that face is compared, the side is tilted towards the direction opposite side that screws with the cam bolt, which is characterized in that has following work Sequence：
The end face of the rotor is set to be contacted with the end face of the camshaft；
Holding tool is caught in the tool snapin part, which, which has, is caught in protrusion and hole portion, this, which is caught in protrusion, to block Enter the tool snapin part, which inserts for carrying out the connection tool of the connection of the cam bolt；
The connection tool is inserted in the hole portion of the holding tool, the holding tool is limited and rotates and by described Connection tool couples the cam bolt.
CN201780010231.2A 2016-03-15 2017-02-07 Valve timing control device for internal combustion engine and method of mounting the valve timing control device Expired - Fee Related CN108603422B (en)

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PCT/JP2017/004329 WO2017159121A1 (en) 2016-03-15 2017-02-07 Valve timing control device for internal combustion engine and method for attaching valve timing control device

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JP2006118509A (en) * 2004-10-22 2006-05-11 Ina-Schaeffler Kg Camshaft adjusting device in internal combustion engine and its assembly tool
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CN111140305B (en) * 2018-11-01 2024-02-02 博格华纳公司 Cam phaser camshaft coupling

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CN108603422B (en) 2020-07-28

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