CN101196131A - Leakage sealed camshaft adjuster with return spring - Google Patents
Leakage sealed camshaft adjuster with return spring Download PDFInfo
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- CN101196131A CN101196131A CNA2007101388654A CN200710138865A CN101196131A CN 101196131 A CN101196131 A CN 101196131A CN A2007101388654 A CNA2007101388654 A CN A2007101388654A CN 200710138865 A CN200710138865 A CN 200710138865A CN 101196131 A CN101196131 A CN 101196131A
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- spring
- rotor
- camshaft adjuster
- spring chamber
- camshaft
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/01—Absolute values
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The present invention relates to a belt pulley type cam shaft adjuster which is used for the internal combustion engine, especially the gas engine. According to one aspect of the invention the structure which is used for compulsory control, oil supplying, rotor locking, silent position and sliding friction reducing uses the additional space obtained in the stator, and no oil will get to the outside of the belt pulley at the range of the rolling surface of the belt pulley.
Description
Technical field
The present invention relates to a kind of camshaft adjuster of reversible motor type.
Background technique
According to the camshaft adjuster of reversible motor (Schwenkmotor) principle, be divided into two classes in related domain according to common classification (method), i.e. the camshaft adjuster of chain transmission and bel-drivenn camshaft adjuster.Under the driving of chain or belt; (input) axle-for example bent axle one is adjusted to morning or later time point to camshaft adjuster, so that the combustion process in the explosive motor firing chamber is helped the intervention of environmental protection with respect to driving with opening time of scavenging air valve and shut-in time.At this, by extending oil or fill other suitable hydraulic medium, adjust camshaft to the direction of " early " or the direction in " evening " with respect to the convection chamber that forms between the rotor of camshaft adjuster and the stator.By a Returnning spring control is forced in described adjustment, for example when oil pressure is not enough, guaranteeing that rotor is in definite optimum position with respect to stator, although and also guarantee the urgent roadability/self-lubricating property (Notlaufeigenschaft) of explosive motor thus when circulating oil path is impaired (lubricating).
According to known structural type, the spring pretension of rotor or pressure spring formula spiral by one, thus if there are not enough anti-torques in the camshaft adjuster, then the off-load campaign by spring is pressed into position of rest with rotor.
On meaning of the present disclosure, helical spring is meant the spring that from inside to outside has the radius of increase in a plane.
From German patent application DE 10339668A1 (Aisin Seiki K.K was on August 28th, 2003) or from the chain transmission camshaft adjuster of the known definite type of U.S. file US 6782854B2 of equivalence, the schematically illustrated camshaft adjuster that has pressure spring in Fig. 1, its spring chamber both had been arranged in the rotor and also had been arranged in the stator cover.From same Applicant, also has a kind of explanation of chain transmission camshaft adjuster, U.S. file US 5775279A according to European patent EP 0 806 550 B1 (Aisin Seiki K.K was on March 26th, 1996) or equivalence, in Fig. 8, the pressure regulating device of the pressure spring formula of this camshaft adjuster is arranged in the lid fully.In two kinds of structural types, in stator cover, be provided with special projection, this projection is connected in wherein regulator center around camshaft, below form a cavity, spring can be arranged in this cavity.The camshaft adjuster of U.S. file US6039016A according to open file DE 19849959A1 (Aisin Seiki K.K was on October 29th, 1998) or equivalence has similar design.
The camshaft adjuster of chain transmission leakage is arranged usually is arranged in the circulating oil path of explosive motor, so that both also with lubricant oil the camshaft adjuster surface was washed away constantly at outer wall at inwall.In the bel-drivenn camshaft adjuster, what follow is another kind of thinking.In order to make the least possible engine lubricating oil befouling environment, camshaft adjuster outwards constitutes as far as possible fully hermetically until the tie point of lubricant oil input and output in formed chamber.The other through-flow point of oil leakage path as oil can be set, and the hydraulic oil that this path will for example be diffused into the spring division surface from hydraulic chamber feeds back in the oil circulation, and oil is not outputed in the environment.The camshaft adjuster that has three through-flow points of oil-be input channel, output channel and leakage path one belongs to the camshaft adjuster of hydraulic seal under open meaning of the present invention, this regulator seals at other position.
Rotor is in the space of containing oil, and this space is divided into a plurality of chambers, and here, rotor commonly used has integrally formed blade on the rotor core that is designed to encircle.
The bel-drivenn camshaft adjuster immerses in the oil with being uncovered under the motor outer wall all the time, do not leak oil but should in the desired operating time, not discharge fully hermetically to environment, the structure of this camshaft adjuster a kind of extensive use up to now is such, be that camshaft adjuster is equipped with a plurality of division surfaces, thereby can be overcome the blow-by of oily working plane by the spring chamber that is arranged on the front, described oily working plane is the plane that wherein is distributed with described chamber (for the camshaft adjuster of chain transmission Figure 16 referring to US 2002/0050258A1).At this moment, camshaft adjuster occupies the main space of the scope of belt drive unit encirclement.
Can know a kind of by chain transmission camshaft adjuster that drive, that have pressure spring formula coil by Fig. 1 of JP-A-2002295209.This camshaft adjuster has the spring chamber that begins, repeatedly turn in sprocket wheel, for can be for spring provides guiding, described spring chamber be with the imitative external frame with spring of the wall portion of tilting.By the also known a kind of camshaft adjuster of DE 103 49 176A1, the same extension reaches in the lid of camshaft adjuster its spring chamber.Because it is microscler having adopted pressure spring, spring chamber.Though by EP 1 164 256A1 and the known types of springs that adopts other alternatively of US 2002/0050258A1, but the designer can not expect various types of springs is directly combined with the technological scheme that described two open file JP-A-2002 29 52 09 and DE 103 49 176A1 provide at once.
If because the division surface that matches, is formed by the spring chamber that the front is set, per thousand hours also can outwards flow out and are lower than several milliliters resid amount, and then camshaft adjuster can be considered as hydraulic seal.
Summary of the invention
The element structure that selected multiple division surface can cause sealing each other increases.The member that uses is many more, and camshaft adjuster is just heavy more, thereby man of engine shop not only can classify as low-grade motor to the bel-drivenn internal-combustion engine, and often is called the motor that has clumsy camshaft adjuster.What the inventor will indicate is that this prejudice is incorrect, and wishes to obtain a kind of project organization, because this project organization also can be used for the volume production motor of little discharge capacity, thereby abolishes this prejudice.
In order to realize this (inventor) self-defining purpose, in the embodiment who describes by claim 1, form of implementation favourable on a plurality of structures has been shown.Favourable improvement project illustrates in the dependent claims.
The present invention pays attention to flat regulator especially, this is a kind of so this regulator, it is with less than 6cm, preferably less than the maximum constructive height of 4cm just can remain on by belt drive unit, by holding in the maximum constructive height that space that transmission (Umschlingungstrieb) forms obtains.At this moment, the corresponding height in the lid of stator or bottom is given prominence to below bel-drivenn the biglyyest.
If camshaft adjuster has (a plurality of) space near the transition each other of rectangle, the bight in described space has by manufacturing technology certain rounding that determine, that for example form by milling cutter, then from unilateral observation, described camshaft adjuster is expressed as step type in its split surface.Described rounding for example can have the radius of maximum 5mm.
Space in the rotor is called as spring chamber, and keeping this space is in order to hold spring.
Especially only need the helical spring in an annular spring chamber for itself, form a spring cavity, described spring cavity is between the wire of inside at spring.According to an embodiment, the spring cavity is empty generally.According to a kind of optional embodiment, described spring cavity is used to place building blocks of function or configuration feature.In this case, observe from the side, rotor at first extends in the height that diminishes gradually, outwards extends gradually then with increasing.
In order in the bel-drivenn camshaft adjuster, to satisfy environmental requirement, the sealing of camshaft adjuster is carried out particular study, this camshaft adjuster does not need the division surface that adds.Therefore, the structural configuration of rotor medi-spring skew influences material selection, processing and arranges.
In order to form the sealing of enough camshaft adjusters, member itself must have the sealing of enough impermeable diffusion oil and must seal by the suitable seal technology in its fringe area and transition zone.
Camshaft adjuster can be made from a variety of materials, and adopts metal or plastics to suit.If the structure on the material structure does not have enough sealings, then need further treatment step, with the oil seal of last formation member.
Especially when sintering, often metallurgical powder is compressed to about 7kg/dm
3Density.But usually, the final densities of material reality is at 7.85kg/dm
3About scope.Therefore, the member of sintering itself just has the porosity that allows hydraulic medium infiltration diffusion.In process subsequently, there is various possibility to be suitable for finally forming sealing.Possible method is included on the surface of member with water vapor loading effect, floods plate surface coating, electroplating nano coating and for example by rolling processing or shot blast raising marginal density with the plastics that are fit to.Load and to do the time spent when carry out water vapor in about 500 ℃ atmosphere, the molecular surface structure of sintered component changes by forming oxide, thereby molecular change is big and produce the oil seal layer.Replace sintering, other member of making stator and camshaft adjuster by casting or high pressure die casting also suits.Form casting skin (Gusshaut) when casting, short of because treatment step subsequently damages this casting skin, this casting skin just has the sealing of enough non-proliferation oil.If assembling possibility deface can also be by improving the foundry goods rubber with plastics dipping members or plate surface coating.Extrude (Flie β presen) or solid shaping (Massivumformen) similar can also comprising.By selecting suitable plastics, for example mix plastics with stone flour, can in plastic injection-moulded, be implemented in the member that the length of life of assurance has enough sealings.
Spring chamber is not have spring cavity ground to be arranged in the space of rotor, and it has width and height.Width from rotor center extend outwardly into blade end (
).The direction of long narrow degree draws the height of spring chamber by having the most usually.According to viewpoint of the present invention, the width of spring chamber is bigger than highly.Its ratio may be prescribed as at least 2: 1.Helical spring with enough commentaries on classics distances can be in such size.
According to an embodiment, spring chamber is positioned at the side that the camshaft that has its depressed part is dorsad admitted side.In rotor one side, be furnished with the camshaft that has around convex shoulder and admit depressed part, and spring chamber is arranged in the couple positioned opposite of rotor.This configuration makes and can be assembled on the internal-combustion engine fast.
Rotor core has the rotor core edge.This rotor core edge ring is around spring chamber.This rotor core edge ring around spring chamber and be in spring chamber and blade between.The rotor core edge only must have such width, promptly guarantees with enough degree oil to be retained in the hydraulic chamber between stator web and the blade.In this case, the width of spring chamber is the several times of rotor core border width.This configuration helps weight reduction.Reduced simultaneously the inertia of rotor thus with respect to stator.By dexterously the camshaft receiving portion being arranged in a side of rotor, and spring chamber is arranged in the opposite side of rotor, imports to epitrochanterian moment of rotation and be compensated/balance.
According to first embodiment, spring chamber is the cavity of a kind of hydraulic medium flushing of a usefulness.According to the second form of implementation example, spring chamber is dry spring chamber.If spring chamber is designed to the cavity of hydraulic medium flushing, to the sealing requirements reduction at rotor core edge.If spring chamber is dry spring chamber, then camshaft adjuster contains a spot of oil.For camshaft adjuster of the present invention, can implement flexible program for two kinds according to the wish design (above-mentioned) of man of engine shop.
In an embodiment who selects, camshaft adjuster is designed to have stator and independent lid.As operculum and stator is two independent members, can be provided with around embedded seal ring or around, especially as the seal ring of bicomponent material or silicone rubber injection moulding/injection (Einspritzen), to improve sealing to oil.Seal ring is along the direction sealed hydraulic chamber of belt pulley.Therefore belt pulley can be by oil pollution.
Lid itself can be designed to two-part equally.In this case, one fixable, the closing cock by being tightened is for example arranged at the center.By preventing that sealing tightens to (unshowned) central bolt on the camshaft with camshaft adjuster, above-mentioned configuration is guaranteed the oil seal that provides additional with leaking.
Belt pulley itself can have firm inwall, and this inwall is the outer wall of stator simultaneously.This integrated/integration step helps further to improve the compactedness of camshaft adjuster.Like this, the space of hydraulic seal is formed by lid, stator and belt pulley inwall.Other division surface is not set.Spring does not have division surface ground and is arranged in rotor fully.This is suspended on spring on the suspension pin of rotor in the one end, and the other end of spring can be fixed on the suspension pin of stator cover.
Description of drawings
Examine appended embodiment, can also understand the present invention better, wherein
Fig. 1 and 2 illustrates a belt pulley camshaft adjuster, and have traditional, special division surface, and have special, improved feature,
Fig. 3 illustrates the camshaft adjuster of not opening of the present invention,
Fig. 4 illustrates the camshaft adjuster of uncovered of the present invention,
Fig. 5 illustrates first embodiment of the camshaft adjuster that the present invention cuts open,
Fig. 6 illustrates second embodiment of camshaft adjuster of the present invention,
Fig. 7 illustrates the height profile of rotor of the present invention,
Fig. 8 illustrates the sectional view of the camshaft adjuster of opening among Fig. 4,
Fig. 9 illustrates the another kind of mode of execution of the rotor that has spring and spring suspension portion,
Figure 10 illustrates and has the camshaft adjuster of the present invention of drawing camshaft,
Figure 11 illustrates another embodiment by Figure 10 regulator.
Embodiment
Though on structural type, have little difference,, give similar member with identical reference number is set for the ease of understanding.
Can see that in Fig. 1 and 2 the structure of traditional camshaft adjuster 1 is higher.Especially for the batch motor of little discharge capacity, it is very limited often to exceed outside the bel-drivenn structure space.Therefore such demand is just arranged, that is, only require to have and compare very little additional height with width belt pulley 11, that draw by the rolling surface 13 of belt pulley 11.Belt pulley 11 is equipped with the tooth 15 of several rolling surfaces 13, and belt transmission can be bonded between the described tooth.First kind of trial of weight reduction can be achieved like this, and promptly belt pulley 11 is connected with stator 3 by the belt pulley web 17 that has therebetween belt pulley space 19.In the wheeled camshaft adjuster of belt, such material economy itself is normally uncommon.Be designed to herein be divided between two-part stator cover 21 and the original stator 3 intermediate plate 23 be set by closing cock 25, this intermediate plate by a plurality of Sealings 31,33,35 with the scope hydraulic seal of hydraulic pressure scope and spring 9 separates.This embodiment illustrates, and also can be provided with to be divided into two-part stator cover 21 on traditional belt transmission camshaft adjuster that has an additional division surface by intermediate plate 23.The Sealing 35 of one of Sealing hydraulically seals the wall portion of belt pulley 95 and stator 3.In the example that illustrates, carry out fuel feeding through the portion 57 that becomes a mandarin of central authorities by the camshaft (not shown), this camshaft feeds camshaft receiving portion 79.In this case, camshaft itself extends to camshaft always and admits depressed part 81, and this depressed part partly is arranged in rotor 5.5 of rotors have the portion 57 that becomes a mandarin of the central authorities that point to Rotor terminal 73 in the side in the scope of its rotor center 67.By the central authorities' hydraulic chamber fuel feeding of portion 57 that become a mandarin to (not being shown specifically) adverse current that between stator and rotor, forms.
Comparison diagram 3 can see that with Fig. 1 the camshaft adjuster 1 of Fig. 3 structure on its height is obviously lower, and the height of belt pulley 11 on rolling surface 13 that has its tooth 15 is near the whole height that is equivalent to camshaft adjuster 1.Tensioning bolt or clamping bolt 59 (is four bolts at this) pass in turn around ground and utilize closing cock 25 to be divided into two-part stator cover 21, these bolts are each member tensioning each other of camshaft adjuster, thereby the transition region of sealing is designed to the hydraulic medium sealing.
If unclamp bolt 59, then draw similar and such camshaft adjuster 1 figure of Fig. 4.Rotor 5 is arranged in stator 3 with its rotor blade 7.Rotor 5 has spring chamber 53, has spring cavity 101 at the spring chamber center with rotor center 67 with overlapping.Spring chamber 53 is limited by rotor core edge 29 along the direction of Rotor terminal 73.By the rotation motion of rotor 5, the blade 7 of separation hydraulic chamber makes the cup of camshaft adjuster 1 diminish with chamber, back (Vorlauf-und Nacheilkammer) or becomes big.Blade 7 can move to next web 63 from a web 63.Through rotor channel 55 hydraulic chamber that becomes a mandarin, can select so here passage is distributed, that is, make its spring chamber that passes through spring 9 53.Rotor 5 is concordant with the edge of the belt pulley 11 that has its tooth 15 or slightly under it, described tooth extends on the whole width of rolling surface.An end of spring 9 is fixed in the spring suspension portion 57, and this suspension part is camshaft receiving portion 79 fastening spring 9 (invisible) dorsad.An end of spring is installed on the parts that can not fix with the relative rotation with rotor, as the fixing pin of stator cover.This means that the other end does not promptly hang over the end in the spring suspension portion 57, is fixed between the pin of stator cover.
Fig. 5 and 6 illustrates two different embodiments of camshaft adjuster 1 of the present invention, and these two main differences of embodiment are, admit the camshaft receiving portion 79 of depressed part 81 with respect to having its camshaft, and which side spring 9 is arranged in its spring chamber 53.In the embodiment according to Fig. 5, spring chamber 53 is away from stator cover 21; And in the embodiment according to Fig. 6, but the closing cock 25 that stator cover divided into two parts 21 is installed with its screw thread is positioned at the near zone that is close to spring chamber 53.In embodiment, be positioned at a side away from stator cover by the become a mandarin rotor channel 55 of portion's 57 fuel feeding of central authorities according to Fig. 6.The chamber of hydraulic seal is by belt pulley web 17, stator 3 and be tensioned to the stator cover 21 that belt pulley gets on via Sealing 65 securely by bolt 59 and form.The convex shoulder 87 of camshaft receiving portion 79 is formed by belt pulley 11.Camshaft adjuster 1 is configured to substantial symmetry in rotor center 67.Hydraulic oil process camshaft admits depressed part 81 and central authorities to become a mandarin portion 57 with respect in the rotor channel 55 in the surrounding environment hydraulic seal ground arrival rotor 5.Rotor is with respect to live axle-by driven shaft-as camshaft, this rotor is designed so that on function it not only has rotor channel 55 at the bent axle of belt drives on the belt pulley-adjust on its phase place, but also has the spring chamber 53 of band spring 9.Rotor 5 itself is provided for carrying out positively controlled space by 9 pairs of rotors of spring, and this spring does not need to cover the additional structure space in 21.Closing cock 25 is designed to have plug screw thread 77, and this screw thread hydraulic seal ground is with respect to surrounding environment Packing spring oil pocket 71.Other sealing task is born by tensioning bolt 59.If with the previously used topology example among Fig. 2 with compare according to the embodiment of Fig. 6, then can see, replaces at least three Sealings, described compact camshaft adjuster also need be provided with one around Sealing 65.If observe the face of 1 two maximums of camshaft adjuster, then can see towards a side 83-of spring chamber it being to have to cover 21 the side and the side 85 of spring chamber dorsad in embodiment according to Fig. 6.In the embodiment according to Fig. 6, camshaft receiving portion convex shoulder 87 is positioned on the side 85 of spring chamber dorsad.Have only cover 21 outstanding between belt pulley 11.
In the embodiment according to Fig. 5, the convex shoulder 87 of camshaft receiving portion 79 is positioned at towards the side 83 of spring, and dorsad the side 85 of spring have have it can be through the lid 21 of the closing cock 25 tightened of plug screw thread 77.Exist a plurality of tensioning bolt 59 will cover 21 with belt pulley 11 or its middle pectoral plate tensioning.From its center 67, rotor 5 can be regarded as elongation, flat, blade-carrying type star polygon work, towards its central authorities, the center 67 of surrounding rotor 5 maintains the spring chamber 53 as flat annulus, admits depressed part 81 to be connected on the described ring at described camshaft.Rotor surface 75 has generally profile uniformly, but this profile raises towards Rotor terminal 73.Flat, circular, cover the rotor core 27 that limits by rotor core edge 29 along the spring chamber 53 of surface distributed.Rotor core edge 29 is compared obviously narrower with the width of spring chamber 53, it compares the ratio that is in less than five with the width of spring chamber 53.Come to determine the size of the convex shoulder 87 of camshaft like this, that is, make it can surround camshaft, the alignment part of having only short residual part to exceed simultaneously to be drawn by belt pulley 11 (Flucht) is outstanding along the direction of camshaft.In near the extension parallel, be distributed with rotor channel 55 below the spring chamber 53 with spring chamber 53, described rotor channel can with central authorities' portion's 57 hydraulic communication that become a mandarin.Each member that forms the space is selectively each other with Sealing 65 sealings.
Shown in Fig. 7 is the rotor 5 that takes out from stator 3, here rotor height profile 69 as can be seen.In selected embodiment, the spring chamber 53 that is used for spring 9 forms a dry spring chamber 61 with its width 103 and height 105.Hydraulic medium admits 57 in the portion that becomes a mandarin of depressed part 81 and central authorities to arrive rotor channel 55 through camshaft.Spring cavity 101 in inside between spring chamber 53 mainly is designed to the hydraulic pressure drying, has only through the leakage at rotor core edge 29 and must derive in central authorities.Spring cavity 101 and spring chamber 53 all are in the scope of rotor core 27.Be connected with the scope of Rotor terminal 73 near the scope the rotor core, Rotor terminal exists with the form of blade 7.Rotor core 27 is limited by rotor core edge 29, and the rotor core edge only covers the sub-fraction of rotor core size on the width of rotor core.If inwardly begin to observe rotor surfaces 75 towards the portion 57 that becomes a mandarin of central authorities from rotor blade, then can see stair-stepping rotor height profile 69, its highest height is positioned at the scope of Rotor terminal 73.Owing to be used for the recess that camshaft is admitted depressed part 81 in the scope at rotor 5 centers, the overall height profile that forms originally is in than little at the Rotor terminal place having the center that is used for spring suspension portion member.Between rotor channel 55 and spring chamber 53, must reserve unnecessary rotor quality, that is, make these two scopes on hydraulic pressure, separate reliably each other, and hydraulic medium can not diffuse into spring chamber by passage with such degree.In this case, must have only very little leakage rate to flow out through the rotor core edge.In addition, the rotor specially of Xing Chenging is light like this, although the diameter 93 of rotor 5 is bigger, whole camshaft adjuster 1 also has only little inertia.
By carefully observing, can be how in tension the suspension pin 89 on the rotor 5 with hang the spring 9 of packing between selling 91, can also be by understand spring suspension portion better referring to Fig. 8 at spring 9 illustrated in fig. 4.Spring 9 is positioned at the scope away from the camshaft receiving portion.The camshaft of camshaft receiving portion 79 back admits depressed part 81 also to be positioned at a side of spring dorsad.In spring cavity 101 as the additional member ring 98 that limits spring chamber 53 of packing into.In the view of Fig. 8, also show belt pulley 11, so that can clearly illustrate that the volume ratio of rotor 5 and belt pulley 11.Though rotor is positively controlled and can supplies all hydraulic chambers, the height of rotor is less than half of belt sheave structure height.In the internal-combustion engine of the camshaft adjuster that has belt drives of the present invention, mainly determine the height of camshaft adjuster by the width of drivign belt.An alignment part by belt pulley draws and covers width at most.In this configuration, the reset function of the spring 9 in spring chamber on the unique plane can realize on the counterrotating member by selling 89 and 91 two of differently being suspended on camshaft adjuster.Through this, can realize the turnability of spring and reverse by differently hanging pin 89,91.Spring chamber 53 extends along rotor 5 equably.Spring chamber 53 be one simple continuous, mainly be circular space, there is a recess in this space heart therein.53 of spring chambers are arranged in rotor 5.According to a kind of configuration, spring chamber 53 can be filled with oil.At this moment, spring 9 is oil supportings.
Fig. 9 illustrates the rotor 5 that has its spring chamber 53.Spring 9 is arranged in spring chamber 53, utilize this spring camshaft adjuster can be rotated to a forced location.Rotor 5 has the outer blade 7 of a plurality of sensings equally, and blade is around distributing.One in the blade 7 is designed to slightly different with most other blades.One in the blade 7 has the shape locking element.This shape locking element is a groove 107.One spring joint end, 109 shapes are arranged in groove 107 sealedly.Spring joint end 109 is that spring 9 is connected the end on the rotor 5 with guaranteeing mechanically stable.This end of spring 9 unwinding from the orientation of spring is opened, and extends laterally to most advanced and sophisticated or its end ranges 73 of blade 7.Spiral spring 9 all is arranged in spring chamber 53 up to spring joint end 109, this end along blade surface greatly about the centre degree of depth with groove cut apart blade, to fill formed groove by spring joint end 109.Spring joint end 109 points to the edge of blade 7 or the rolling surface of blade broad.
Another embodiment of camshaft adjuster 1 of the present invention can draw from Figure 10 and 11.Pin 115 reaches the spring chamber 53, and provide with being staggeredly arranged each other the spring guiding from covering 21, described pin 115 is by the end 113 of the turning part fastening spring 9 of main spring end 113.Spring 9 extends in the rotor recess 51 that spring 9 can be received in the position fully.Spring suspension portion 97 is positioned at the central authorities of camshaft adjuster 1.Spring suspension portion 97 preferably runs through in the centre, can form a slotted hole with an end of camshaft 117 thus.For central bolt can be connected rotor 5 with camshaft 117, slotted hole is designed to have the central, threaded hole 121 of internal thread.Two spring ends 111,113 that are designed to spring joint end 111,113 come out from spring 9 bendings, we can say that also deflection comes out.At least two distance in the pin 115 is definite like this, that is, the thickness of spring 9 can accurately be engaged between it, and be arranged in thus in the clamped position (Klemmsitz).One end of spring 9, promptly joint end 111 seatings are in groove 119.Joint is designed to shown in Figure 9 similar.Camshaft adjuster 1 at one end limits the camshaft 117 that is arranged in its back, and this camshaft is by the rotor 5 of a fixing pin 99 alignment cam axle adjusters 1.Centering sleeve 23 is used as another alignment structures.Spring 9 is perpendicular to the axis of camshaft 117.Spring is arranged in the side of rotor 5 away from camshaft 117.Rotor 5 provides spring chamber 53 in a vertically circular flat space, the occupied height in this space is less than half of camshaft adjuster rotor 5 height.Camshaft 117 is placed in the camshaft receiving portion 79 of belt pulley 11.Belt pulley 11 is bearing on the end of camshaft 117 thus.Spring 9 unwinding on identical plane is stretched out from rotor 5 as blade 7.Can realize covering 21 thus, the hierachical structure of rotor 5 and the spring 9 below rotor 5 middle covers 21, placed.5 of spring 9 and rotors are passed by set central bolt.Camshaft 117 is connected on one of both sides of camshaft adjuster 1.Camshaft 117 is not to pass completely through camshaft adjuster 1, and just is connected with it one-sided.
Be characterised in that many favourable performances by the new camshaft adjuster of the present invention, it is than many traditional bel-drivenn camshaft adjuster compactnesses, light, small and exquisite and quick.Here, on multiple function, use rotor 5, wherein between the scope of its guiding hydraulic fluid, select the wall thickness of rotor like this, that is, make and to suppress to penetrate diffusion effectively.Promptly use helical spring to illustrate the present invention; it will be appreciated by those skilled in the art that; below these forms of implementation also belong within the protection domain of the present invention instruction; as long as positively controlled spring is arranged in rotor fully to determine preferred sense of rotation, these forms of implementation also can adopt other spring.Although lid itself can easily arch upward, it is positioned on the plane of not interrupted by spring generally.Spring and lid extend in the main scope of root diameter parallel to each other and flatly.In a sectional view, each single parts, as lid, spring, spring chamber, the rotor that has rotor channel and belt pulley inwall, has layout parallel to each other, wherein each parts is in respectively in the space of distributing to them, does not enter into the adjacent space of other parts or interrupts described space.Therefore, described parts are designed to not have interruption.
According to one aspect of the present invention, minimized height with rotor, use the additional space that obtains at stator by the structure that for example is used for forcing control, fuel feeding, locked rotor, quiet position (Verharrungslage) and reducing sliding friction, and in the scope of belt pulley rolling surface, do not have the outside that oil arrives belt pulley.
The drawing reference numeral table:
The drawing reference numeral content
1 camshaft adjuster
3 stators
5 rotors
7 blades
9 springs
11 belt pulleys
13 belt pulley rolling surfaces
The tooth of 15 rolling surfaces
17 belt pulley webs
19 belt pulley spaces
21 stator cover
23 intermediate plates
The closing cock of 25 lids
27 rotor cores
29 rotor core edges
31 Sealings
33 Sealings
35 Sealings
51 rotor spaces
53 spring chambers
55 rotor channels
The portion that becomes a mandarin of 57 central authorities
59 tensioning bolts
61 spring drying chambers
63 stator webs
65 lid Sealings
67 rotor centers
69 rotor height profiles
71 spring oil pockets
73 rotor tips
75 rotor surfaces
77 plug screw threads
79 camshaft receiving portions
81 camshafts are admitted depressed part
83 sides towards spring chamber
85 sides of spring chamber dorsad
The convex shoulder of 87 camshaft receiving portions
89 epitrochanterian suspension pins
The suspension pin of 91 camshaft receiving portions
93 root diameters
95 belt pulleys or pulley disc
97 spring suspension portions
99 fixing pins
101 spring cavitys
103 spring chamber width
105 spring chamber height
107 grooves
109 spring joint ends
111 spring joint ends, especially second end
113 spring joint ends, especially first end
115 are especially covering integrally formed suspension pin
117 camshafts
119 grooves
121 centre bolt holes
123 centering sleeves
Claims (13)
1. the camshaft adjuster of hydraulic seal (1), especially have the vane rotor (5) that is not equipped with tensioned and stator (3) with leaking, particularly as the camshaft adjuster of belt transmission camshaft adjuster, described vane rotor includes rotor core (27) and a plurality of blade (7), it is characterized in that
Rotor (5) along its diameter (93) outwards to become to have the height profile (69) of rising since an eccentric initial least radius step-likely, its maximum height profile (69) is located at the end (73) of blade (7) and locates, thereby form the spring chamber (53) that extends along rotor surface (75), this spring chamber is arranged in the scope of rotor core (27) prejudicially fully.
2. camshaft adjuster as claimed in claim 1 (1) is characterized in that, the width (103) of spring chamber (53) especially is at least the twice of described height (105) greater than the height (105) of spring chamber (53).
3. as the camshaft adjuster (1) of claim 1 or 2, it is characterized in that the spring (9) of rotor (5) is a helical spring.
4. as the camshaft adjuster (1) of claim 1 or 2, it is characterized in that, rotor (5) a side of spring chamber (53) dorsad have rotatably by convex shoulder around camshaft admit depressed part (81).
5. as the camshaft adjuster (1) of claim 1 or 2, it is characterized in that, spring chamber (53) along towards the radial direction of blade (7) by around rotor core edge (29) center on, wherein the width of spring chamber (53) is the several times of rotor core edge (29) width.
6. as the camshaft adjuster (1) of claim 1 or 2, it is characterized in that spring chamber (53) is the space by hydraulic medium such as oil flushing.
7. as the camshaft adjuster (1) of claim 1 or 2, it is characterized in that spring chamber (53) is dry spring chamber (61).
8. as the camshaft adjuster (1) of claim 1 or 2, it is characterized in that, lid (21) on the stator (3) on the direction of belt pulley (11) by around, can embed seal ring (65) but or around injection moulding seal ring (65) sealing, the joint (115) that wherein stretches in the spring chamber (53) is particularly given prominence to from lid (21).
9. camshaft adjuster as claimed in claim 8 (1) is characterized in that, lid (21) design mix is two-part, and the heart maintains closing cock fixable, that especially can tighten (25) therein.
10. camshaft adjuster as claimed in claim 8 (1) is characterized in that, belt pulley (11) has been equipped with the inwall (17) of stabilization, and this inwall is the outer wall of stator (3) simultaneously.
11. camshaft adjuster as claimed in claim 8 (1) is characterized in that, the inwall of described lid (21), stator (3) and belt pulley (11) forms the space of a hydraulic seal, and this space can not have division surface ground and holds rotor (5) and spring (9).
12. the camshaft adjuster (1) as claim 1 or 2 is characterized in that, spring (9) is arranged in one of rotor with an end and hangs in the pin (89), and is fixed on the other end on the suspension pin (91) of stator cover (21).
13. camshaft adjuster (1) as claim 1 or 2, it is characterized in that, in rotor (5), preferably on a bigger sidewall, there is spring suspension portion, especially groove (107), spring joint end (109) shape of spring (9) act in the described spring suspension portion sealedly, form being connected of mechanically stable like this between the described end (109) of rotor (5) and spring (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006022219.9 | 2006-05-11 | ||
| DE102006022219A DE102006022219B4 (en) | 2006-05-11 | 2006-05-11 | Leakage-proof camshaft adjuster with return spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101196131A true CN101196131A (en) | 2008-06-11 |
| CN101196131B CN101196131B (en) | 2011-08-24 |
Family
ID=38607765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101388654A Expired - Fee Related CN101196131B (en) | 2006-05-11 | 2007-05-11 | Leakage sealed camshaft adjuster with return spring |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1865158B1 (en) |
| KR (1) | KR101404661B1 (en) |
| CN (1) | CN101196131B (en) |
| DE (2) | DE102006022219B4 (en) |
| ES (1) | ES2317619T3 (en) |
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| ATE497572T1 (en) * | 2008-12-17 | 2011-02-15 | Feintool Ip Ag | DEVICE FOR RESETTING A PHASE ADJUSTER FOR A CAMSHAFT |
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- 2007-05-11 KR KR1020070046058A patent/KR101404661B1/en not_active IP Right Cessation
- 2007-05-11 CN CN2007101388654A patent/CN101196131B/en not_active Expired - Fee Related
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| WO2019119182A1 (en) * | 2017-12-18 | 2019-06-27 | 舍弗勒技术股份两合公司 | Device for adjusting camshaft phase |
| US11066966B2 (en) | 2017-12-18 | 2021-07-20 | Schaeffler Technologies AG & Co. KG | Device for adjusting camshaft phase |
| CN110593978A (en) * | 2018-06-12 | 2019-12-20 | 伊希欧1控股有限公司 | Camshaft unit and method for producing a camshaft unit |
| CN110593978B (en) * | 2018-06-12 | 2021-10-22 | 伊希欧1控股有限公司 | Camshaft unit and method for producing a camshaft unit |
| CN109914998A (en) * | 2019-04-11 | 2019-06-21 | 郑荣华 | The connection structure of vacuum packing machine upper cover |
| CN113338663A (en) * | 2021-06-22 | 2021-09-03 | 南京瑞麒凰电子科技有限公司 | Hydraulic rotating bearing platform working under end face high-load environment |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1865158A2 (en) | 2007-12-12 |
| CN101196131B (en) | 2011-08-24 |
| DE102006022219A1 (en) | 2007-11-22 |
| KR20070109948A (en) | 2007-11-15 |
| DE102006022219B4 (en) | 2008-01-03 |
| DE502007000296D1 (en) | 2009-01-29 |
| EP1865158B1 (en) | 2008-12-17 |
| EP1865158A3 (en) | 2007-12-19 |
| ES2317619T3 (en) | 2009-04-16 |
| KR101404661B1 (en) | 2014-06-09 |
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