CN105008680A - Valve-opening/closing-timing control device, and production method for drive-side rotational body of valve-opening/closing-timing control device - Google Patents

Valve-opening/closing-timing control device, and production method for drive-side rotational body of valve-opening/closing-timing control device Download PDF

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Publication number
CN105008680A
CN105008680A CN201480011351.0A CN201480011351A CN105008680A CN 105008680 A CN105008680 A CN 105008680A CN 201480011351 A CN201480011351 A CN 201480011351A CN 105008680 A CN105008680 A CN 105008680A
Authority
CN
China
Prior art keywords
housing body
opening portion
face
inner peripheral
peripheral surface
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.)
Pending
Application number
CN201480011351.0A
Other languages
Chinese (zh)
Inventor
朝日丈雄
野口祐司
安达一成
杉本祯
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.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Publication of CN105008680A publication Critical patent/CN105008680A/en
Pending legal-status Critical Current

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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
    • F01L1/356—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 making the angular relationship oscillate, e.g. non-homokinetic drive
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/10—Bearings
    • 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
    • F01L2001/34479—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
    • F01L2301/00—Using particular materials
    • 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

Abstract

Provided is a valve-opening/closing-timing control device with which oil leakage from gaps between members configuring a drive-side rotational body is suppressed, while maintaining lubrication and abrasion resistance of a slide surface of a housing main body. The present invention is provided with: a drive-side rotational body which synchronously rotates with a crank shaft, and which is provided with a housing main body having an opening at at least one side thereof in a direction along a rotational axis (X), and a cover plate that is brought into contact with an end surface of the opening to occlude the opening; and a driven-side rotational body which is provided inside the drive-side rotational body, demarcates, between an inner peripheral surface of the housing main body and the driven-side rotational body, an advance chamber and a retardation chamber, and rotates integrally with a cam shaft and concentrically with the rotational axis. The housing main body is provided with a hard layer formed on at least the inner peripheral surface thereof, among surfaces thereof excluding the end surface of the opening.

Description

The manufacture method of the driving side solid of rotation of valve opening/closing timing control device and valve opening/closing timing control device
Technical field
The present invention relates to the manufacture method of the driving side solid of rotation of valve opening/closing timing control device and formation valve opening/closing timing control device, this valve opening/closing timing control device possesses: the driving side solid of rotation rotated with the crankshaft-synchronous of internal-combustion engine; Can be configured in coaxial core with the relative rotation in the inner circumferential side of driving side solid of rotation, and the driven-side rotor rotated with the integrated camshaft of the valve opening and closing of internal-combustion engine.
Background technique
Valve opening/closing timing control device, by controlling the rotatable phase of driven-side rotor relative to the housing body forming driving side solid of rotation, changes the suction valve of internal-combustion engine or the opening and closing moment of outlet valve thus.Now, the inner peripheral surface of housing body slides mutually with the such as partition member being located at driven-side rotor, but is equipped with sealed member at such sliding parts, prevents the leakage of oil from the hydraulic chamber in housing body.But when housing body is made up of metals such as aluminiums, the inner peripheral surface of housing body easily weares and teares because of the slip with sealed member etc., becomes the reason of leakage of oil.Therefore, such as patent documentation 1 is such, has the valve opening/closing timing control device defining the hard layers such as the overlay film of self lubricity resin or aluminium oxide overlay film at the inner peripheral surface of housing body.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2001-132415 publication
Summary of the invention
The problem to be solved in the present invention
In the valve opening/closing timing control device of patent documentation 1, due to whole the enforcement alumite to housing body, therefore except inner peripheral surface, also form hard layer at the end face of opening portion.Alumina layer (hard layer) grows along the direction vertical with the surface of aluminium usually.But in the edge that the end face by inner peripheral surface and opening portion is formed, the growth of alumina layer is disorderly, and its surface configuration can become uneven sometimes.When housing body installs cover plate, the disorder of such surface configuration is sandwiched in the involutory surface of housing body and cover plate, produces gap between.This gap becomes the reason from the leakage of oil in housing body.And the edge of the end face of the opening portion of housing body is the position being difficult to be formed hard layer, and the direction forming hard layer easily produces disorder.Therefore, the hard layer that there is edge is formed thin relative to driven-side rotor or gives prominence to the situation of formation from the end face of the opening portion of housing body.At that rate, the hard layer near the end face of the opening portion of housing body and produce gap between driven-side rotor or between the end face of opening portion and cover plate.
And, in order to avoid leakage of oil, the space of driven-side rotor and cover plate preferably can not become driven-side rotor slip obstruction scope in as far as possible narrowly set.But when the end face of the opening portion in housing body exists the uneven thickness of the end face part of the opening portion of hard layer and housing body, the setting in this space becomes difficulty, can cause leakage of oil occurs and situation that control response worsens.
The object of the present invention is to provide a kind of wear resistance, the lubricity that keep the slip surface of housing body, and avoid the valve opening/closing timing control device that leakage of oil occurs from the parts gap each other forming driving side solid of rotation etc.
For the technological scheme of dealing with problems
Feature structure for the valve opening/closing timing control device of the present invention realizing above-mentioned purpose is, possess: driving side solid of rotation, it has housing body and cover plate, and carry out synchronous rotary relative to bent axle, this housing body has the opening portion of at least either party side opening in the direction along running shaft core, and this cover plate abuts with the end face of described opening portion and closed by described opening portion; And driven-side rotor, in it is wrapped in by described driving side solid of rotation, divide between this driven-side rotor and the inner peripheral surface of described housing body and form advance angle room and retardation angle room, this driven-side rotor and described running shaft core are in concentrically rotating with integrated camshaft, and described housing body possesses the hard layer on the inner peripheral surface of at least described housing body in the surface be formed in except the end face of described opening portion.
As this structure, possess the hard layer on inner peripheral surface that a part in the housing body being formed in driving side solid of rotation, at least driven-side rotor and driving side solid of rotation carry out sliding, the wear resistance of housing body can be improved thus.
On the other hand, do not arrange hard layer at the end face of the opening portion of housing body, thus when assembling driving side solid of rotation, the close property of the end face of opening portion and the involutory part of cover plate improves.Thus, the working oil of filling to advance angle room or retardation angle room can be suppressed from the leakage of this involutory part, the valve opening/closing timing control device that action response is good can be obtained.
In valve opening/closing timing control device of the present invention, preferably, described housing body is ring-type, and the described hard layer of described inner peripheral surface is formed to position identical with the end face of described opening portion on the shaft core direction of described housing body.
As this structure, when the hard layer of inner peripheral surface is formed to position identical with the end face of opening portion on the shaft core direction of housing body, increase relative to the compression area of the separating part and hard layer of being located at driven-side rotor, therefore the wear resistance of hard layer improves.And the separating part of driven-side rotor abuts with the hard layer being formed to the position identical with the end face of opening portion, therefore, it is possible to suppress the leakage of working oil.
The featured aspects of the manufacture method of the driving side solid of rotation of valve opening/closing timing control device of the present invention is, described valve opening/closing timing control device possesses: driving side solid of rotation, it has at least one housing body and cover plate, and carry out synchronous rotary relative to bent axle, this housing body has the opening portion of at least either party side opening in the direction along running shaft core, and this cover plate abuts with the end face of described opening portion and closed by described opening portion; And driven-side rotor, in it is wrapped in by described driving side solid of rotation, divide between this driven-side rotor and the inner peripheral surface of described housing body and form advance angle room and retardation angle room, this driven-side rotor and described running shaft core are in concentrically rotating with integrated camshaft, in the manufacture method of described driving side solid of rotation, utilize coating member to cover the described open end of described housing body, the inner peripheral surface of at least described housing body in the region except the end face of described opening portion of described housing body forms hard layer.
According to this manufacture method, in order to form the housing body of driving side solid of rotation, the inner peripheral surface etc. of housing body forming hard layer, the wear resistance of housing body can be improved thus.On the other hand, in the present invention, when the formation of the hard layer of the inner peripheral surface to housing body, the end face of opening portion carries out coated, therefore on the end face of the opening portion of housing body, does not form hard layer.Thus, the end face of opening portion and the close property of cover plate improve, and can suppress the leakage of the working oil of filling to advance angle room or retardation angle room, can obtain the valve opening/closing timing control device that action response is good.And, after the hardening process finishing of inner peripheral surface, do not need to implement special processing to the end face of opening portion.Thereby, it is possible to obtain the housing body of the performance with expectation expeditiously.
In the manufacture method of the driving side solid of rotation of valve opening/closing timing control device of the present invention, can be, aluminium is utilized to form described housing body, rubber components is utilized to cover the end face of the opening portion of described housing body, the at least two kinds of rubber materials utilizing hardness different form described rubber components, and position in described rubber components, that abut with the edge of the inner peripheral surface side of the described housing body in the edge of the end face of described opening portion arranges the high rubber material of hardness.
When utilizing aluminium to form housing body, as the hardening process of aluminium, often use alumite.In the present invention, alumite is implemented to the inner peripheral surface of housing body, alumite is not carried out to the end face of the opening portion installing cover plate.Thus, improve the wear resistance of housing body, and suppress the leakage of working oil.But, need the alumite by implementing the inner peripheral surface of housing body especially for this reason and in inner peripheral surface and position, boundary that the end face of opening portion has a common boundary till form complete alumina layer.
Therefore, in this manufacture method, as be coated on housing body opening portion end face on rubber components in, the rubber components that abuts with the edge of the end face of opening portion, utilize the rubber material that hardness is high.For the position beyond the edge in the end face of the opening portion of housing body, use the rubber material that hardness is low.When such rubber components is pressed against the end face of opening portion, rubber components is compressive strain a little, and the rubber components stretched out from the edge of the end face of opening portion is extruded by the center side to inner peripheral surface.In the present invention, by making the rubber material at this position be the rubber material that hardness is high, the extrusion of such rubber material can be alleviated thus.Thereby, it is possible to make alumina layer (hard layer) intactly grow to position, boundary in inner peripheral surface, that have a common boundary with the end face of opening portion.
In the manufacture method of the driving side solid of rotation of valve opening/closing timing control device of the present invention, can be, at least described inner peripheral surface in the inner peripheral surface and outer circumferential face of cylinder material forms described hard layer, described cylinder material cuts off by the cutting line specified along the thickness size according to described housing body in described outer circumferential face, forms described driving side solid of rotation thus.
By this structure, can produce by cylinder material the housing body that multiple end face at opening portion does not form hard layer.Possessed owing to being only the end face not forming the opening portion of hard layer along cutting line cut-out by the housing body of the part manufacture by central authorities of cylinder material.The hard layer that the end face of the opening portion at the two ends of cylinder material is formed can ream by implementing cutting etc.Like this, the housing body being at least formed with hard layer at inner peripheral surface can be produced expeditiously.
Accompanying drawing explanation
Fig. 1 is the overall structure figure representing valve opening/closing timing control device.
Fig. 2 is that the II-II of Fig. 1 is to looking sectional view.
Fig. 3 is the stereogram of the housing body being formed with hard layer.
Fig. 4 is the stereogram of housing body and coating member.
Fig. 5 is the stereogram of the coating member of other mode of executions.
Fig. 6 represents the partial sectional view being equipped with the state of coating member in housing body.
Fig. 7 is the stereogram of a material.
Embodiment
(overall structure)
As shown in Figure 1, valve opening/closing timing control device possesses: with the housing 1 (example of driving side solid of rotation) of the bent axle E1 synchronous rotary of motor E; In being wrapped in by housing 1, and the inner rotator 3 (example of driven-side rotor) rotated integrally with the camshaft 2 of motor E.Housing 1 and inner rotator 3 are configured on same axle core X.
(housing and rotor)
As shown in Figures 1 and 2, housing 1 possesses: the header board 4 (example of cover plate) arranged at the opposition side of front side and camshaft 2; At the rear plate 5 (example of cover plate) that rear side and camshaft 2 side are arranged; Be clipped on the external rotor 6 (example of housing body) between header board 4 and rear plate 5.Sprocket tooth is formed at the peripheral part of rear plate 5.Header board 4, rear plate 5, external rotor 6 are fixed by screw thread.External rotor 6 has the opening portion 24 (with reference to Fig. 3) of at least either party side opening in the direction along running shaft core X.Header board 4 and rear plate 5 are connected to the end face 25 of the opening portion 24 of external rotor 6 and are closed by opening portion 24.In addition, also can not on the peripheral part of rear plate 5, form sprocket tooth and form sprocket tooth on the peripheral part of external rotor 6.
When bent axle E1 carries out rotary actuation, its rotary driving force via power transmission member E2 backward plate 5 transmit, external rotor 6 carries out rotary actuation to sense of rotation S (with reference to Fig. 2).Along with the rotary actuation of external rotor 6, inner rotator 3 carries out rotary actuation and camshaft 2 rotates to sense of rotation S, and the suction valve (not shown) of motor presses down by the cam (not shown) being located at camshaft 2.
As shown in Figure 2, multiple protuberance 8 outstanding to radially inner side is formed with in the inner peripheral portion of external rotor 6.These protuberances 8 configure at spaced intervals along sense of rotation S.Multiple separating part 9 outstanding to radial outside is formed at the peripheral part of inner rotator 3.These separating parts 9 configure at spaced intervals along sense of rotation S in the same manner as protuberance 8.By protuberance 8, the space between the inner peripheral surface 26 of external rotor 6 and inner rotator 3 is separated into multiple fluid pressure chamber.By separating part 9, form advance angle room 11 and retardation angle room 12 in the indoor division of above-mentioned hydrodynamic pressure.And, in order to prevent the leakage of the engine oil between advance angle room 11, retardation angle room 12, the position relative with the inner peripheral surface of external rotor 6 in the position relative with the outer circumferential face of inner rotator 3 in protuberance 8 and separating part 9 arranges sealed member SE respectively.
External rotor 6 is formed by the sintering metals such as stainless steel, iron, Cuprum alloy, aluminium, aluminum alloy etc.As shown in Figure 3, the inner peripheral surface 26 of external rotor 6 in the surface except the end face 25 of opening portion 24 is formed with hard layer 30.
Hard layer 30 is formed by hard resins such as the fluororesin such as polyflon (PTFE), polyphenylene sulfide (PPS), polyimide resin (PI), polyamide-imide resin (PAl), polyamide resin (PA), Wholly aromatic polyester resin (ARPES), polyether ketone resin (PEK), polyether-ether-ketone resins (PEEK).As the formation method of hard layer 30, electrostatic powder coating method, induction coating process, slipper dip method, spraying method, spread coating etc. can be adopted.Aluminium can be utilized to form external rotor 6, and form alumina layer as hard layer 30 at inner peripheral surface 26.
Like this, possess the hard layer 30 that at least inner peripheral surface 26 in external rotor 6 is formed, thus when the part of inner rotator 3 and external rotor 6 are slided, the wear resistance of external rotor 6 can be improved.On the other hand, do not arrange hard layer 30 at the end face 25 of the opening portion 24 of external rotor 6, thus when assemble case 1, the end face 25 of opening portion 24 improves with the close property of header board 4.Thus, the leakage of the working oil of filling to advance angle room 11 or retardation angle room 12 can be suppressed, the valve opening/closing timing control device that action response is good can be obtained.
As shown in Figures 1 and 2, advance angle path 13 and retardation angle path 14 is formed in the inside of inner rotator 3, connecting member 22 and camshaft 2.The supply output mechanism KK of each advance angle room 11 with the cut-out of the supply and discharge and this supply and discharge of carrying out engine oil is connected by advance angle path 13.Each retardation angle room 12 is connected with supply output mechanism KK by retardation angle path 14.
Supply output mechanism KK possesses food tray, oil hydraulic motor, advance angle path 13 and retardation angle path 14 is carried out to the control valve for fluids OCV of the supply of engine oil and the cut-out of discharge and this supply and discharge, controls the electronic control unit ECU of the work of control valve for fluids OCV.By controlling this supply output mechanism KK, the relative rotation phase of inner rotator 3 and external rotor 6 can be made to advance angle direction (the arrow S1 direction of Fig. 2) or retardation angle direction (the arrow S2 direction of Fig. 2) displacement, or be held in arbitrary phase place.
Inner rotator 3 and external rotor 6 are locked into the relative rotation phase of regulation by locking framework RK.Locking framework RK assembles Lock Part 16 and forms on a separating part 9 of inner rotator 3, and this Lock Part 16 possesses the front end free to advance or retreat on the direction along running shaft core X relative to the recess (not shown) be formed on rear plate 5.And arrange the hydraulic chamber (not shown) making working oil pressure play a role on Lock Part 16, this hydraulic chamber is communicated with advance angle path 13 or retardation angle path 14.By these structures, locking framework RK is compressed the active force of the force application parts such as spring (not shown), enter recess by the front end of Lock Part 16 and switch to lock state, locking framework RK is subject to working oil pressure (hydrodynamic pressure), from recess by the active force overcoming force application part is internally deviate from and switches to latch-release state in rotor 3 side.
(manufacture method about housing (driving side solid of rotation))
Such as, when the external rotor 6 (example of housing body) forming housing 1 is made up of aluminium, hard layer 30 is formed by carrying out alumite to inner peripheral surface 26.In order to form such hard layer 30, first, coating member 40,40 (with reference to Fig. 4) is utilized to cover the end face 25,25 of the opening portion 24 of the both sides of external rotor 6.Coating member 40 is made up of the rubber components of such as hard or copper coin in the mode of the end face 25 of the opening portion 24 along external rotor 6.Coating member 40 shown in Fig. 4 is shapes roughly the same with the end face 25 of the opening portion 24 of external rotor 6, as long as but the end face 25 of the opening portion 24 of external rotor 6 is covered completely, the shape of coating member 40 can be any.
By coating member 40,40 (with reference to Fig. 4) by the end face 25 of opening portion 24,25 coated after, at least inner peripheral surface 26 on the surface of external rotor 6 and in the region except the end face 25 of opening portion 24 forms hard layer 30.About alumite, except using coating member 40,40, also general method can be used.Hard layer 30 also not only can be formed at the inner peripheral surface 26 of external rotor 6, is also formed at outer circumferential face 27 in the lump.After external rotor 6 defines hard layer 30, pull down coating member 40 from the end face 25 of opening portion 24, the end face 25,25 to opening portion 24 installs header board 4, rear plate 5, completes housing 1 thus.
In addition, within the case 1, when supposing a side in integrally formed header board 4 and rear plate 5 and external rotor 6, coating member 40 is only configured at the end face 25 of the opening portion 24 of a side side.
Like this, form hard layer 30 by the inner peripheral surface 26 at external rotor 6, the wear resistance of external rotor 6 can be improved.On the other hand, the end face 25 of the opening portion 24 of external rotor 6 does not form hard layer 30.Therefore, when header board 4 being installed on the end face 25 of opening portion 24 of external rotor 6, header board 4 is easily close on the surface of the end face 25 of opening portion 24.Consequently, the leakage of the working oil of filling to advance angle room 11 or retardation angle room 12 can be suppressed, the valve opening/closing timing control device that action response is good can be obtained.
And, in this manufacture method, when forming the hard layer 30 to inner peripheral surface 26, carrying out coated to the end face 25 of opening portion 24 in advance, therefore not needing to implement special processing to the end face 25 of opening portion 24 after the hardening process finishing of inner peripheral surface 26.Thereby, it is possible to obtain the housing parts of the performance with expectation expeditiously.
About the hard layer 30 being formed in inner peripheral surface 26, in order to reliably abut with the position on the whole width of inner rotator 3, need complete alumina layer (hard layer) 30 to be formed to the position, boundary had a common boundary with the end face 25 of opening portion 24.But, when such as rubber components (example of coating member) 40 is pressed against end face 25 of the opening portion 24 of external rotor 6 to general, rubber components 40 compressive strain a little, the part that the edge 25a of the end face 25 from opening portion 24 in rubber components 40 stretches out is extruded by the center side to inner peripheral surface 26.When the extrusion of such rubber components 40 becomes large, the position, boundary had a common boundary with the end face 25 of opening portion 24 in inner peripheral surface 26, the space that alumina layer (hard layer) 30 should grow is inaccessible by rubber components 40, is therefore difficult to form complete alumina layer (hard layer) 30.
Therefore, as shown in Figures 5 and 6, rubber components 40 coated for the end face 25 of opening portion 24 is made up of two kinds of rubber materials 41,42 that hardness is different.The position that the edge 25a of inner peripheral surface 26 side of the external rotor 6 of rubber components 40 in the edge of the end face 25 with opening portion 24 abuts arranges the high rubber material of hardness 41, arranges the low rubber material 42 of hardness for the position beyond the edge 25a of the end face 25 of opening portion 24.
Like this, in rubber components 40, by making the rubber material 41 abutted with the edge 25a of the end face 25 of opening portion 24 be the rubber material that hardness is high, the extrusion of the center side to inner peripheral surface 26 of rubber material 41 can be alleviated thus.Thus, alumina layer (hard layer) 30 can be made intactly to grow to position, boundary in inner peripheral surface 26, that have a common boundary with the end face 25 of opening portion 24, the inner peripheral surface 26 of external rotor 6 can integrally form good hard layer 30 throughout running shaft core X-direction.
That is, the hard layer 30 of inner peripheral surface 26 is formed to the position identical with the end face 25 of opening portion 24 on the shaft core direction of external rotor 6.Thus, relative to the separating part 9 of inner rotator 3, the compression area of hard layer 30 increases, and therefore the wear resistance of hard layer 30 improves.And the separating part 9 of inner rotator 3 abuts with the hard layer 30 being formed to the position identical with the end face 25 of opening portion 24, therefore, it is possible to suppress the leakage of working oil.
(other mode of executions)
(1) in the above-described embodiment, show the example of the end face 25 of the opening portion 24 by the coated single external rotor 6 of coating member 40, but also can as shown in Figure 7, use rectangular cylinder material 60 to manufacture multiple external rotor 6.Cylinder material 60 can be molding by extrusion etc. forms.Multiple thickness size along shaft core direction according to external rotor 6 is provided with and the cutting line C specified at the outer circumferential face of cylinder material 60.In order to manufacture external rotor 6, after only defining hard layer 30 on the inner peripheral surface 26 of cylinder material 60 or on inner peripheral surface 26 and outer circumferential face 27, along cutting line C, cylinder material 60 is cut off.The hard layer that the end face 25 of the opening portion 24 at the two ends of cylinder material 60 is formed is reamed by implementing cutting.
Like this, can produce by cylinder material 60 external rotor 6 that multiple end face 25 at opening portion 24 does not form hard layer 30.Possessed owing to being only the end face 25 not forming the opening portion 24 of hard layer 30 along cutting line C cut-out by the external rotor 6 of the part manufacture by central authorities of cylinder material 60.Like this, the end face 25 by means of only the opening portion 24 of the both sides of coated cylinder material 60 just can manufacture multiple external rotor 6, therefore, it is possible to manufacture external rotor 6 expeditiously.
(2) in the above-described embodiment, show the example that housing 1 is made up of external rotor 6, header board 4, these three parts of rear plate 5, but housing 1 also the side on external rotor 6 in integrally formed header board 4 and rear plate 5 can be formed.
(3) in the above-described embodiment, show the example that the coating member of the end face 25 of opening portion 24 and rubber components 40 are made up of two kinds of rubber materials 41,42 that hardness is different, as long as but the extrusion that can alleviate from the end face 25 of opening portion 24 to the rubber material of the center side of inner peripheral surface 26, also can by the different rubber material formation rubber components 40 of more than 3 kinds of hardness.
Industrial applicibility
The present invention can be applicable to the valve opening/closing timing control device of Motor Vehicle and other internal-combustion engine.
Description of reference numerals
1 housing (driving side solid of rotation)
2 camshafts
3 inner rotator (driven-side rotor)
4 header boards (cover plate)
Plate (cover plate) after 5
6 external rotors (housing body)
11 advance angle rooms
12 retardation angle rooms
24 opening portions
25 end faces
25a edge
26 inner peripheral surfaces
30 hard layers
40 coating members
The rubber material that 41 hardness are high
The rubber material that 42 hardness are low
60 materials
X running shaft core

Claims (5)

1. a valve opening/closing timing control device, is characterized in that, possesses:
Driving side solid of rotation, it has housing body and cover plate, and carry out synchronous rotary relative to bent axle, described housing body has the opening portion of at least either party side opening in the direction along running shaft core, and described cover plate abuts with the end face of described opening portion and closed by described opening portion; And
Driven-side rotor, in it is wrapped in by described driving side solid of rotation, divide between described driven-side rotor and the inner peripheral surface of described housing body and form advance angle room and retardation angle room, described driven-side rotor and described running shaft core are in concentrically rotating with integrated camshaft
Described housing body possesses the hard layer on the inner peripheral surface of at least described housing body in the surface be formed in except the end face of described opening portion.
2. valve opening/closing timing control device according to claim 1, is characterized in that,
Described housing body is ring-type, and the described hard layer of described inner peripheral surface is formed to position identical with the end face of described opening portion on the shaft core direction of described housing body.
3. a manufacture method for driving side solid of rotation, described manufacture method is the manufacture method of the driving side solid of rotation of valve opening/closing timing control device, and described valve opening/closing timing control device possesses:
Driving side solid of rotation, it has at least one housing body and cover plate, and carry out synchronous rotary relative to bent axle, described housing body has the opening portion of at least either party side opening in the direction along running shaft core, and described cover plate abuts with the end face of described opening portion and closed by described opening portion; And
Driven-side rotor, in it is wrapped in by described driving side solid of rotation, divide between described driven-side rotor and the inner peripheral surface of described housing body and form advance angle room and retardation angle room, described driven-side rotor and described running shaft core are in concentrically rotating with integrated camshaft
In the manufacture method of described driving side solid of rotation,
Utilize coating member to cover the described open end of described housing body, the inner peripheral surface of at least described housing body in the region except the end face of described opening portion of described housing body forms hard layer.
4. the manufacture method of driving side solid of rotation according to claim 3, is characterized in that,
Aluminium is utilized to form described housing body, rubber components is utilized to cover the end face of the opening portion of described housing body, the at least two kinds of rubber materials utilizing hardness different form described rubber components, and position in described rubber components, that abut with the edge of the inner peripheral surface side of the described housing body in the edge of the end face of described opening portion arranges the high rubber material of hardness.
5. the manufacture method of driving side solid of rotation according to claim 3, is characterized in that,
At least described inner peripheral surface in the inner peripheral surface and outer circumferential face of cylinder material forms described hard layer, and described cylinder material cuts off by the cutting line specified along the thickness size according to described housing body in described outer circumferential face, forms described driving side solid of rotation thus.
CN201480011351.0A 2013-04-10 2014-03-14 Valve-opening/closing-timing control device, and production method for drive-side rotational body of valve-opening/closing-timing control device Pending CN105008680A (en)

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JP2013-082178 2013-04-10
JP2013082178A JP6048887B2 (en) 2013-04-10 2013-04-10 Method for manufacturing drive side rotor in valve timing control device
PCT/JP2014/056960 WO2014167945A1 (en) 2013-04-10 2014-03-14 Valve-opening/closing-timing control device, and production method for drive-side rotational body of valve-opening/closing-timing control device

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KR101647350B1 (en) 2016-08-23
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