CN103758602A - Valve mechanism for engine and vehicle with same - Google Patents
Valve mechanism for engine and vehicle with same Download PDFInfo
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- CN103758602A CN103758602A CN201410033597.XA CN201410033597A CN103758602A CN 103758602 A CN103758602 A CN 103758602A CN 201410033597 A CN201410033597 A CN 201410033597A CN 103758602 A CN103758602 A CN 103758602A
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- arm assembly
- roller
- valve
- outer shaft
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Abstract
The invention discloses a valve mechanism for an engine and a vehicle with the same. The valve mechanism comprises a vale gear, a rocker arm assembly, a first roller, a second roller, a cam shaft, a connecting arm and a phase adjusting mechanism. The bottom of the rocker arm assembly is provided with a driving type face which is directly in contact with the top of a valve to drive the valve of the valve gear to move. The first roller and the second roller can both be arranged on the rocker arm assembly in a pivoted mode. The cam shaft comprises an inner shaft and an outer shaft which are coaxially arranged, the inner shaft and the outer shaft are provided with an inner shaft cam and an outer shaft cam which can rotate along with corresponding shafts respectively, the outer shaft cam abuts against the first roller, and the inner shaft cam abuts against the second roller. The connecting arm is placed on the two sides of the rocker arm assembly respectively, the first end of the connecting arm is connected with the rocker arm assembly in a pivoted mode, and the second end of the connecting arm is arranged on an engine body set of the engine in a pivoted mode. The phase adjusting mechanism is used for adjusting the relative phase of the inner shaft and the outer shaft. The valve mechanism for the engine can achieve secondary opening of the valve, meanwhile, the duration time of opening of the valve can further be prolonged, the structure is simple and compact, and the influence on the height of the engine is small.
Description
Technical field
The present invention relates to automobile construction field, especially relate to a kind of distribution device for motor and there is its vehicle.
Background technique
The distribution device of motor is for driving the switching of valve, and its port timing is the local optimum based on a certain narrow and small condition range of motor and determining generally, immobilize in the course of the work, and valve motion rule is determined by cam profile completely.But because cam profile is single, can not adjust valve motion rule according to motor actual conditions conditions of demand, can not the different operating conditions of simultaneous adaptation motor, oil consumption is higher, discharges poor, be unfavorable for improving the power performance of motor simultaneously, and general lift range variable technology can only change valve opening maximum lift, shifts gears more single, and complex structure, component are many, control loaded down with trivial details.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of above-mentioned technical problem of the prior art.For this reason, one object of the present invention is to propose a kind of distribution device for motor, and this distribution device can be realized the secondary opening of valve, can also extend the lasting time of valve opening simultaneously, and simple and compact for structure, less to motor effect of altitude.
Another object of the present invention is to propose a kind of vehicle with above-mentioned distribution device.
The distribution device for motor according to the embodiment of the present invention, comprising: valve mechanism; Rocker arm assembly, the substructure of described rocker arm assembly has driving profile, and described driving profile is directly moved with the direction that the top of the valve of described valve mechanism contacts to be suitable for driving described valve edge to be parallel to valve center line; The first roller and the second roller, described the first roller and described the second roller are all located on described rocker arm assembly pivotly; Camshaft, described camshaft comprises interior axle and the outer shaft of coaxial setting, described interior axle has the interior axis cam with described interior axle synchronous rotary, described outer shaft has the outer shaft cam with described outer shaft synchronous rotary, described outer shaft cam is against described the first roller, and described interior axis cam is against described the second roller; Link arm, described link arm lays respectively at the both sides of described rocker arm assembly, and the first end of described link arm is connected pivotly with described rocker arm assembly, and the second end of described link arm is located in the body group of described motor pivotly; And for regulating the phase-regulating mechanism of described interior axle and described outer shaft relative phase.
Distribution device for motor according to the above embodiment of the present invention, employing comprise coaxial setting shown in the camshaft of axle and described outer shaft, can realize the object that described secondary opening of air valve and described valve opening duration extend, when realizing described secondary opening of air valve, can realize scavenging function, simultaneously according to the distribution device of the embodiment of the present invention and rocker arm assembly compact structure thereof, required arrangement space is little,, good reliability little and stable to motor effect of altitude are convenient to carry application in the motor of passenger car simultaneously.
According to one embodiment of present invention, described rocker arm assembly comprises: the first rocker arm assembly and the second rocker arm assembly, one end of described the second rocker arm assembly is located on described the first rocker arm assembly pivotly, wherein said the first roller is located on described the first rocker arm assembly pivotly, described driving profile is formed on the bottom of described the first rocker arm assembly, and described the second roller is located on the other end of described the second rocker arm assembly pivotly.
According to one embodiment of present invention, described the first rocker arm assembly comprises: two rocking arm portions, middle arm portions, two the first side plates and two drive portions, described two rocking arm portions are located at respectively the two ends of described middle arm portions, described two rocking arm portions are oppositely arranged and being axially spaced apart from each other along camshaft, described two drive portions are located at respectively in described two rocking arm portions and to downward-extension, the bottom surface of described drive portion forms described driving profile, and described two the first side plates are located in described middle arm portions and along described axially spaced; Described the second rocker arm assembly comprises: base portion and two the second side plates, and described two the second side plates are relatively located on described base portion, and described two the second side plates are parallel to each other.
According to one embodiment of present invention, described the first roller is two and lays respectively at the outside of described two the first side plates, and described two the first rollers are connected by the first bearing pin with described two the first side plates; Described the second roller is one and is located between described two the second side plates, and described the second roller is connected by the second bearing pin with described two the second side plates; Described base portion is located between described two rocking arm portions pivotly by the 3rd bearing pin.
According to one embodiment of present invention, the relative inner of described two rocking arm portions is respectively arranged with spacing block set group, described spacing block set group comprises two spacing block sets that are oppositely arranged, described in the two ends of a described spacing block set in every group and another in this group, the two ends of spacing block set are spaced apart from each other, and the described spacing block set in every group is close to described the 3rd bearing pin; The both sides of described base portion are respectively arranged with spacing projection group, described spacing projection group comprises two spacing projections, two described spacing projections in every group lay respectively between the two ends of described two spacing block sets of corresponding side, and described spacing block set is suitable for described in backstop spacing projection to limit the maximum angle of relatively described the first rocker arm assembly of described the second rocker arm assembly.
According to one embodiment of present invention, the two ends of described the second bearing pin are extended to both sides respectively and are exceeded described two the second side plates; Described distribution device also comprises: two elastic components, described two elastic components are located at respectively the both sides of described the second rocker arm assembly, described in each, one end of elastic component is bent into the circular arc hook portion of part adaptation with described the second side plate of exceeding of described the second bearing pin, described in each elastic component around described two at least one circles of spacing block set of corresponding side and described in each the other end of elastic component be bent into shape with described two spacing block set adaptations with clip outside described two spacing block sets.
According to one embodiment of present invention, the two ends of described the first bearing pin are extended to both sides respectively and are exceeded described two the first rollers, and the described first end of described two link arms is connected pivotly with the two ends of described the first bearing pin respectively.
According to one embodiment of present invention, the both sides of described driving profile are respectively arranged with the first blocked part, and the top of described valve is folded between the first blocked part of respective drive profile both sides.
According to one embodiment of present invention, the two ends of described driving profile are respectively arranged with the second blocked part, and the top that described the second blocked part is suitable for the corresponding valve of backstop is to prevent this valve and corresponding driving profile slippage.
According to one embodiment of present invention, described outer shaft cam is interference fitted on described outer shaft, described interior axis cam Spielpassung is on described outer shaft, on described outer shaft, be formed with restraining groove, described interior axis cam is connected by wearing the backing pin of described interior axis cam, described restraining groove and described interior axle.
According to one embodiment of present invention, described link arm is configured to oblong flat board; Described phase-regulating mechanism is phase discriminator.
According to the vehicle of the embodiment of the present invention, also comprise according to the distribution device for motor in the above embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is according to the structural representation of the distribution device for motor of the embodiment of the present invention.
Fig. 2 is according to the side view of the distribution device for motor of the embodiment of the present invention.
Fig. 3 is according to the structural representation at the rocker arm assembly place of the distribution device for motor of the embodiment of the present invention.
Fig. 4 is according to the decomposition texture schematic diagram at the rocker arm assembly place of the distribution device for motor of the embodiment of the present invention.
Fig. 5 is according to the decomposition texture schematic diagram of the camshaft of the distribution device for motor of the embodiment of the present invention.
Reference character:
Distribution device 100,
Valve mechanism 1, valve 11,
Rocker arm assembly 2,
The first rocker arm assembly 21, drive profile 201,
Middle arm portions 212,
The first side plate 213,
The second rocker arm assembly 22, base portion 221, the second side plate 222,
Spacing block set group 23, spacing block set 231,
The first roller 31, the first roller 32,
Camshaft 42,
The first bearing pin 71, the second bearing pin 72, the 3rd bearing pin 73
Embodiment
Describe embodiments of the invention below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
The body group of motor is the support of motor, is the matrix of connecting rod, distribution device and the assembling of each system.In related domain, usually, body group is mainly comprised of cylinder block, cylinder head, cylinder head gasket and oil sump etc., oil sump is generally located at the bottom of cylinder block, cylinder head is located at the top of cylinder block, cylinder head gasket is located between the end face of cylinder block and the bottom surface of cylinder head, for sealing the gap between the two.
Cylinder head forms firing chamber together with cylinder with piston head, the top of firing chamber has suction port and relief opening, and the valve of valve mechanism is located in cylinder cap and sealing suction port and relief opening.For existing general motor, adopt the two valve forms of entering scene 2 more, minority also has the valve form that adopts one-in-and-one-out or three to enter scene 2.
For same motor, generally all there is multiple different operating mode, such as low speed small load condition, high speed high load working condition etc., when motor is under different operating modes, motor externally moment of torsion and the power of output is different, the content of the harmful gas of motor discharge is simultaneously also different, and the distribution device of motor, according to the requirement of the work cycle of carrying out in each cylinder and firing order, regularly opens and closes intake valve and exhaust valve.
Usually, distribution device can regulate the lift amount of valve, but regulative mode is single, can not meet well usage requirement.According to the distribution device of the embodiment of the present invention, can realize the secondary opening of valve, opening time that simultaneously also can proper extension valve, regulative mode is various, thereby meets better the requirement of different operating modes.
Being appreciated that can be for driving into the valve event of gas side according to the distribution device of the embodiment of the present invention, can certainly be for driving the valve event of exhaust side, or be used in air inlet side and exhaust side to drive corresponding valve event simultaneously.Preferably, according to the distribution device of the embodiment of the present invention, for driving the valve event of exhaust side, in the following description, take this distribution device is example for driving the valve of exhaust side.
Below with reference to Fig. 1-Fig. 5, describe in detail according to the distribution device 100 for motor of the embodiment of the present invention.
According to the distribution device 100 for motor of the embodiment of the present invention comprise valve mechanism 1, rocker arm assembly 2, the first roller 31, the second roller 32, comprise the interior axle 422 of coaxial setting and the camshaft 42 of outer shaft 423, link arm 5 and for regulating the phase-regulating mechanism (scheming not shown) of interior axle 422 and outer shaft 423 relative phases.
Wherein, valve mechanism 1 has been prior art, and known by those skilled in the art, for example valve mechanism 1 can comprise valve 11, valve 11 can move back and forth up and down to open or close along the center line of valve 11 suction port or the relief opening of firing chamber in valve guide bushing, for these, can adopt the part of identical setting with prior art, be not described in detail here.
As shown in Figures 2 and 3; the substructure of rocker arm assembly 2 has and drives profile 201; drive profile 201 directly to contact to be suitable for driving the valve 11 of valve mechanism 1 to move along the direction that is parallel to valve 11 center lines with the top of the valve 11 of valve mechanism 1; driving profile 201 can be boot last face, but is not limited to this.Should be appreciated that those skilled in the art can be according to actual needs and flexible design drives the concrete line style of profile 201, be not limited to above-mentioned boot last face.Should be appreciated that those skilled in the art can be according to actual needs and flexible design drives the concrete line style of profile 201, be not limited to above-mentioned arc surface.Adopt and drive profile 201 directly to drive valve 11 motions, strengthened the stability of distribution device 100, reduced component simultaneously, easy to process and cost-saving.
The first roller 31 and the second roller 32 are all located on rocker arm assembly 2 pivotly.That is to say, the first roller 31 is located on rocker arm assembly 2 and can pivotable with respect to rocker arm assembly 2, and the second roller 32 is located on rocker arm assembly 2 and can pivotable with respect to rocker arm assembly 2.
With shown in Fig. 5, camshaft 42 comprises interior axle 422 and the outer shaft 423 of coaxial setting as shown in Figure 1, Figure 2, and interior axle 422 has the interior axis cam 4221 with interior axle 422 synchronous rotaries, and outer shaft 423 has the outer shaft cam 4231 with outer shaft 423 synchronous rotaries.
Outer shaft cam 4231 can be interference fitted on outer shaft 423, interior axis cam 4221 can Spielpassung on outer shaft 423, on outer shaft 423, can be formed with restraining groove 4232, interior axis cam 4221 can be connected with interior axle 422 by wearing the backing pin 4222 of interior axis cam 4221, restraining groove 4232 and interior axle 422.
Shown in Fig. 1 and Fig. 5, interior axle 422 is embedded in outer shaft 423 and interior axle 422 can rotate relatively with outer shaft 423, also can synchronous rotary.Backing pin 4222 can be in the interior slip of this restraining groove 4232, restraining groove 4232 can limit the rotation angle of interior axis cam 4221 relative outer shafts 423, by the position-limiting action of restraining groove 4232, interior axle 422 can be adjustable continuously in several angle with the relative phase of outer shaft 423.
Outer shaft cam 4231 is against the first roller 31, and interior axis cam 4221 is against the second roller 32.In other words, outer shaft cam 4231 equates with the quantity of the first roller 31 and respectively correspondingly against cooperation, interior axis cam 4221 equates with the quantity of the second roller 32 and distinguishes correspondingly against cooperation.
According to some embodiments of the present invention, each in interior axis cam 4221 and outer shaft cam 4231 all has large basic circle (the A section in Fig. 2), little basic circle (the B section in Fig. 2) and is connected to the changeover portion (the C section in Fig. 2) between large basic circle and little basic circle, but be not limited to this, for a person skilled in the art, can be according to actual needs and the molded line of adaptive settings cam.
For example, at the large basic circle of two kinds of cams (being outer shaft cam 4231 and interior axis cam 42) and corresponding roller (i.e. the first roller 31 or the second roller 32), when contacting, the lift amount of valve 11 can be maximum.That is to say, the large basic circle of outer shaft cam 4231 and the first roller 31 against contact and the large basic circle of interior axis cam 4221 and the second roller 32 when contacting, valve 11 is opened lift state in maximum.
While existing the little basic circle of at least one cam to contact with corresponding roller in two kinds of cams, valve 11 can be in closed condition, and the lift amount of valve 11 is minimum.For example, the large basic circle of outer shaft cam 4231 and the first roller 31 against contact and the little basic circle of interior axis cam 4221 and the second roller 32 when contacting, or the little basic circle of outer shaft cam 4231 and the first roller 31 against contact and the large basic circle of interior axis cam 4221 and the second roller 32 when contacting, valve 11 can be in closed condition.
And the changeover portion of two kinds of cams contact with corresponding roller or one for changeover portion, another is when contact with corresponding roller for large basic circle, valve 11 lift amount can be between zero lift and maximum lift.For example, the changeover portion of outer shaft cam 4231 and the first roller 31 against contact and the changeover portion of interior axis cam 4221 and the second roller 32 when contacting, or the changeover portion of outer shaft cam 4231 and the first roller 31 against contact and the large basic circle of interior axis cam 4221 and the second roller 32 when contacting, valve 11 lift amount can be between zero lift and maximum lift.
But, be to be understood that, the present invention is not limited to this, for a person skilled in the art, reading on the basis of specification content disclosed herein molded line that obviously can the above-mentioned two kinds of cams of flexible design, when the position contacting with corresponding roller at two kinds of cam profiles changes; the lift amount of rocker arm assembly 2 action rear driving valves 11 also can adaptations, this for a person skilled in the art, should be hold intelligible.
Here, need explanation a bit, in related domain, engine body group mainly comprises the parts such as cylinder block, cylinder head, cylinder head gasket and oil sump, but in the present invention, body group should be made broad understanding, can be understood as this body group and not only comprises the included parts of above-mentioned traditional sense upper machine body group, can also comprise some attached assemblys etc.For example, in superincumbent description, " the second end of link arm 5 is located in the body group of motor pivotly ", the second end that can be understood as link arm 5 is directly located at body group pivotly as in cylinder head, or can be fixedly installed intermediate member in cylinder head, the second end of link arm 5 is located on this intermediate member pivotly, and to can be understood as be a part for body group for the intermediate member here.
Phase-regulating mechanism is for regulating the relative phase of outer shaft 423 and interior axle 422, thus the relative phase of change outer shaft cam 4231 and interior axis cam 4221.According to one embodiment of present invention, phase-regulating mechanism can be phase discriminator, phase discriminator can be single rotor phase discriminator, only has a rotor, rotor can be connected with in interior axle 422 and outer shaft 423, the stator of phase discriminator can in axle 422 be connected with another in outer shaft 423, to regulate the phase place of relative another axle of an axle.Rotor with phase discriminator is connected with interior axle 422, and stator and outer shaft 423 are connected to example, and phase discriminator can change the relative phase of interior axle 422, when phase discriminator regulates clockwise, valve 11 is realized secondary opening lift and is continued to increase, and when phase discriminator regulates counterclockwise, the 11 unlatching durations of valve increase gradually.Should be appreciated that phase discriminator regulates the relative phase of two axles for prior art, does not make specified otherwise to the specific works principle of the concrete structure of phase discriminator, phase discriminator and adjustment process here.
Be appreciated that, owing to driving homonymy valve 11 to adopt coaxial interior axle 422 and the outer shaft 423 arranging according to the distribution device 100 of the embodiment of the present invention, therefore according to the distribution device 100 of the embodiment of the present invention, by phase discriminator, regulate after the relative phase of these two axles, can realize the secondary opening of valve 11 and extend 11 opening times of valve.
Particularly, in the process of camshaft 42 rotations, there will be the large basic circle of two kinds of above-mentioned cams all to contact with corresponding roller, now the lift amount of valve 11 can be maximum, the situation that simultaneously also there will be a kind of large basic circle of cam and the changeover portion of corresponding roller contact and another kind of cam to contact with corresponding roller, now the relative maximum lift of valve 11 lift amount reduces to some extent, valve 11 has breakdown action twice like this, wherein once be opened into maximum lift, the relative maximum lift of lift of another unlatching reduces, and has realized the object of valve 11 secondary openings.
Further, when the interval of valve 11 secondary openings is larger, the valve-closing that approaches air inlet side as valve 11 secondary openings of exhaust side constantly time, can realize scavenging function, thereby can improve low engine speed moment of torsion and transient response performance.If during valve 11 secondary opening of exhaust side, can strengthen heat management, realize rapid warming-up, engine cold-start difficult problem while solving low compression ratio, and can reduce motor discharge, improve engine cold idle stability and running smoothness and the effects such as moment of torsion control in dpf regeneration stage.In the concrete time lag of controlling valve 11 secondary openings, can realize by adaptability design cam profile, but be not limited to this.
At phase discriminator, regulate after the relative phase of two axles, the relative phase of interior axis cam 4221 and outer shaft cam 4231 changes, now can realize and increase valve 11 open-interval objects, for example, after having regulated the relative phase of two axles, interior axis cam 4221 there will be and continues the situation that large basic circle contacts with corresponding roller with outer shaft cam 4231, now can greatly extend valve 11 and open the endurance.
Thus, distribution device 100 for motor according to the above embodiment of the present invention, employing comprises the interior axle 422 of coaxial setting and the camshaft 42 of outer shaft 423, can realize valve 11 secondary openings and valve 11 and open the object of duration prolongation, when realizing valve 11 secondary opening, can realize scavenging function, simultaneously according to the distribution device 100 of the embodiment of the present invention and rocker arm assembly 2 compact structures thereof, required arrangement space is little,, good reliability little and stable to motor effect of altitude are convenient to carry application in the motor of passenger car simultaneously.
Below with reference to Fig. 3-Fig. 5 (simultaneously in conjunction with Fig. 1-Fig. 2), describe the distribution device 100 in diagram in detail.
Rocker arm assembly 2 can comprise the first rocker arm assembly 21 and the second rocker arm assembly 22.One end of the second rocker arm assembly 22 is located on the first rocker arm assembly 21 pivotly, wherein the first roller 31 is located on the first rocker arm assembly 21 pivotly, drive profile 201 to be formed on the bottom of the first rocker arm assembly 21, the second roller 32 is located on the other end of the second rocker arm assembly 22 pivotly.That is to say, the second rocker arm assembly 22 and the first rocker arm assembly 21 can relative movement within the scope of several angle.
Further, as shown in Figure 4, the first rocker arm assembly 21 can comprise two rocking arm portions 211, middle arm portions 212, two the first side plates 213 and two drive portions 214, two rocking arm portions 211 are oppositely arranged and being axially spaced apart from each other along camshaft 42, two drive portions 214 are located at respectively in two rocking arm portions 211 and to downward-extension, the bottom surface of drive portion 214 forms and drives 201, two the second side plates of profile to be located on middle interconnecting piece 212 and axially spaced along camshaft 42.
The second rocker arm assembly 22 can comprise that base portion 221 and 222, two the second side plates 222 of two the second side plates are relatively located on base portion 221, and two side plates 222 are parallel to each other.
As shown in Figure 3 and Figure 4, the first roller 31 is the outside that two and two the first rollers 31 can lay respectively at two the first side plates 213, and two the first rollers 31 can be connected by the first bearing pin 71 with two the first side plates 213.The second roller 32 is that one and the second roller 32 are located at and state between two the second side plates 222, and the second roller 32 can be connected by the second bearing pin 72 with two the second side plates 222.Base portion 221 is located between two rocking arm portions 221 pivotly by the 3rd bearing pin 73.
Further, as shown in Figure 4, the relative inner of two rocking arm portions 211 is respectively arranged with spacing block set group 23, spacing block set group 23 can comprise two spacing block sets that are oppositely arranged 231, the two ends of a spacing block set 231 in every group and the two ends of another spacing block set 231 in this group are spaced apart from each other, and the spacing block set in every group 231 is close to the 3rd bearing pin 73.That is to say, first end (for example the H1 of Fig. 4 end) and the reorganization of a spacing block set 231 in the first end (for example H1 of Fig. 4 end) of another spacing block set 231 spaced apart to limit chute.
The both sides of base portion 221 can be respectively arranged with spacing projection group 24, spacing projection group 24 can comprise two spacing projections 241, two spacing projections 241 in every group can lay respectively between the two ends of two spacing block sets 231 of corresponding side, in other words, are positioned at the chute of corresponding side.Spacing block set 231 is suitable for the spacing projection 241 of backstop to limit the maximum angle of relative the first rocker arm assembly 21 of the second rocker arm assembly 22.In other words, spacing block set 231 is suitable for the spacing projection 241 of backstop to limit the hard-over of relative the first rocker arm assembly 21 of the second rocker arm assembly 22, wherein hard-over namely the second rocker arm assembly 22 after the first rocker arm assembly 21 rotates, the maximum value of the angle between the second rocker arm assembly 22 and the first rocker arm assembly 21.
Further, the shape of two spacing block sets 231 in one group of spacing block set group 23 can be identical and can arranges about the 3rd bearing pin 73 radial symmetric the distance between two spacing block sets 231 and the equal diameters of the 3rd bearing pin 73.Thus, the structure of rocker arm assembly 2 is simpler, and processing cost is low and easy to manufacture.
Further, two the second side plates 222 can be extended respectively and exceed in the two ends of the second bearing pin 72 to both sides.Distribution device 100 can also comprise: two elastic components 25, two elastic components 25 can be located at respectively the both sides of the second rocker arm assembly 22, one end of each elastic component 25 is bent into the circular arc hook portion 251 with the part adaptation that exceeds the second side plate 222 of the second bearing pin 72, each elastic component 25 around two at least one circles of spacing block set 231 of corresponding side and the other end of each elastic component 251 be bent into shape with two spacing block set 231 adaptations with clip outside two spacing block sets 231.
Below with reference to Fig. 1-Fig. 4, describe the working procedure at rocker arm assembly 2 places of distribution device 100 in detail:
When valve 11 is during in lift, that is to say when valve 11 is in an open position, spacing projection 241 is against one end of chute, and at this moment the angle between the first rocker arm assembly 21 and the second rocker arm assembly 22 is maximum, thereby the first rocker arm assembly 21 and the second rocker arm assembly 22 are moved as a whole.
When valve 11 is closed, elastic component 25 drives the second rocker arm assembly 22, make angle between the first rocker arm assembly 21 and the second rocker arm assembly 22 be the trend diminishing, thereby guaranteed outer shaft cam 4231 and the first roller 31, interior axis cam 4221 and the second roller 32 contact all the time do not occur separated, and can adjust valve clearance, thereby avoid distribution device 100 that slip phenomenons occur and affect the stability of distribution device 100, strengthening the stability of distribution device 100.
As shown in Figure 4, can be respectively extend to both sides and the described first end that exceeds 31, two link arms 5 of two the first rollers can be connected with the two ends of the first bearing pin 71 respectively pivotly at the two ends of the first bearing pin 71.
In other words, in the example of Fig. 1, each valve mechanism 1 includes two valves 11, accordingly, link arm 5 is also two, and a corresponding link arm 5 of valve 11, the first end of this link arm 5 is connected with rocker arm assembly 2 pivotly by the first bearing pin 71, and the second end of link arm is connected with engine body group.Thus, the stability in the time of can keeping better rocker arm assembly 2 action, makes structure compacter, reduces the height of distribution device 100, is convenient to carry application in motor.Certainly, the first end of link arm 5 also can pass through miscellaneous part (non-the first bearing pin 72) and be connected with rocker arm assembly 2, thereby makes structural design more flexible.
In these some embodiments, link arm 5 is configured to oblong flat board, and simple in structure thus, easy to process, cost is low, takes up room little, convenient layout.
By rocker arm assembly 2 being designed to comprise the first rocker arm assembly 21 and the second rocker arm assembly 22, and several idols that the first rocker arm assembly 21 and the second rocker arm assembly 22 can be movable relatively, not only guaranteed contacting all the time of corresponding roller and corresponding cam, and reduced dynamic impulsion and vibration noise in distribution device 100 runnings, reduce mechanical wear, further guaranteed stability and the reliability of distribution device 100.
Further, as shown in Figure 3, drive the both sides of profile 201 to be respectively arranged with the first blocked part 2141, the top of valve 11 is folded between the first blocked part 2141 of respective drive profile 201 both sides, for example the distance between the first blocked part 2141 that drives profile 201 both sides can be slightly larger than the radial dimension at the top of valve 11, like this when valve 11 action, this first blocked part 2141 can be carried out spacing well to valve 11, during anti-air-stop gate 11 action, cause distribution device 100 normally to work with driving profile 201 slippages.
Further, drive the two ends of profile 201 to be respectively arranged with the second blocked part (scheming not shown), the top that the second blocked part is suitable for the corresponding valve 11 of backstop is to prevent this valve 11 and corresponding driving profile 201 slippages.Like this, two the first blocked parts 2141 and two the second blocked parts can form the stop configurations of a general toroidal, at valve 11 movement ranges when excessive, this annular stop configurations is backstop valve 11 well, anti-air-stop gate 11 with drive profile 201 separated, guarantee distribution device 100 can stablize, efficiently, operation continuously.Simultaneously, by the bottom at drive portion 214, directly form and drive profile 201 and above-mentioned stop configurations is set, thereby the bottom that can make valve 11 is directly resisted against and drives in profile 201, without traditional valve rocker structure is set, reduce amount of parts, simplified the structure of distribution device 100, reduced cost, energy transmission loss while also having reduced distribution device 100 work, has improved transmission efficiency.
Preferably, the first blocked part 2141 and the second blocked part can be formed on drive portion 214, but are not limited to this.Further preferably, two rocking arm portions 211, middle arm portions 212, two the first side plates 213 and two drive portions 214 can be integrally formed.
Be appreciated that, in the above-described embodiment, in order to guarantee that outer shaft cam 4231 and the first roller 31 and interior axis cam 4221 and the second roller 32 can keep in touch state constantly, prevent slip phenomenon, distribution device 100 also has elastic reset structure, elastic reset structure can flexibly push against the first roller 31 and the second roller 32 so that the first roller 31 is often resisted against on the outer circumferential face of outer shaft cam 4231 and the second roller 32 is often resisted against on interior axis cam 4221, for a person skilled in the art, can design different structure according to the structural characteristics of above-mentioned rocker arm assembly 2, size, the elastic reset structure of form, it can be integrative-structure, it can be Split type structure, as long as can guarantee that respective cams contacts constantly with corresponding roller, this for a person skilled in the art, should be that appearance is intelligible, therefore do not make particular determination here.For example, elastic reset structure can be spring.
Below simply describe according to the vehicle of the embodiment of the present invention.
According to the vehicle of the embodiment of the present invention, comprise according to the distribution device 100 for motor of describing in the above embodiment of the present invention.Thus, good according to the vehicle power of the embodiment of the present invention, noxious gas emission is few, energy-conserving and environment-protective.
Should be understood that, according to other configuration example of the vehicle of the embodiment of the present invention as motor, speed changer, differential mechanism, braking system etc. be all prior art and being well known for ordinary skill in the art, therefore describe in detail no longer one by one here.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.In addition, those skilled in the art can engage the different embodiments that describe in this specification or example and combine.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (12)
1. for a distribution device for motor, it is characterized in that, comprising:
Valve mechanism;
Rocker arm assembly, the substructure of described rocker arm assembly has driving profile, and described driving profile is directly moved with the direction that the top of the valve of described valve mechanism contacts to be suitable for driving described valve edge to be parallel to valve center line;
The first roller and the second roller, described the first roller and described the second roller are all located on described rocker arm assembly pivotly;
Camshaft, described camshaft comprises interior axle and the outer shaft of coaxial setting, described interior axle has the interior axis cam with described interior axle synchronous rotary, described outer shaft has the outer shaft cam with described outer shaft synchronous rotary, described outer shaft cam is against described the first roller, and described interior axis cam is against described the second roller;
Link arm, described link arm lays respectively at the both sides of described rocker arm assembly, and the first end of described link arm is connected pivotly with described rocker arm assembly, and the second end of described link arm is located in the body group of described motor pivotly; And
For regulating the phase-regulating mechanism of described interior axle and described outer shaft relative phase.
2. the distribution device for motor according to claim 1, is characterized in that, described rocker arm assembly comprises:
The first rocker arm assembly and the second rocker arm assembly, one end of described the second rocker arm assembly is located on described the first rocker arm assembly pivotly, wherein said the first roller is located on described the first rocker arm assembly pivotly, described driving profile is formed on the bottom of described the first rocker arm assembly, and described the second roller is located on the other end of described the second rocker arm assembly pivotly.
3. the distribution device for motor according to claim 2, is characterized in that,
Described the first rocker arm assembly comprises: two rocking arm portions, middle arm portions, two the first side plates and two drive portions, described two rocking arm portions are located at respectively the two ends of described middle arm portions, described two rocking arm portions are oppositely arranged and being axially spaced apart from each other along camshaft, described two drive portions are located at respectively in described two rocking arm portions and to downward-extension, the bottom surface of described drive portion forms described driving profile, and described two the first side plates are located in described middle arm portions and along described axially spaced;
Described the second rocker arm assembly comprises: base portion and two the second side plates, and described two the second side plates are relatively located on described base portion, and described two the second side plates are parallel to each other.
4. the distribution device for motor according to claim 3, is characterized in that,
Described the first roller is two and lays respectively at the outside of described two the first side plates, and described two the first rollers are connected by the first bearing pin with described two the first side plates;
Described the second roller is one and is located between described two the second side plates, and described the second roller is connected by the second bearing pin with described two the second side plates;
Described base portion is located between described two rocking arm portions pivotly by the 3rd bearing pin.
5. the distribution device for motor according to claim 4, is characterized in that,
The relative inner of described two rocking arm portions is respectively arranged with spacing block set group, described spacing block set group comprises two spacing block sets that are oppositely arranged, described in the two ends of a described spacing block set in every group and another in this group, the two ends of spacing block set are spaced apart from each other, and the described spacing block set in every group is close to described the 3rd bearing pin;
The both sides of described base portion are respectively arranged with spacing projection group, described spacing projection group comprises two spacing projections, two described spacing projections in every group lay respectively between the two ends of described two spacing block sets of corresponding side, and described spacing block set is suitable for described in backstop spacing projection to limit the maximum angle of relatively described the first rocker arm assembly of described the second rocker arm assembly.
6. the distribution device for motor according to claim 5, is characterized in that, the two ends of described the second bearing pin are extended to both sides respectively and exceeded described two the second side plates;
Described distribution device also comprises: two elastic components, described two elastic components are located at respectively the both sides of described the second rocker arm assembly, described in each, one end of elastic component is bent into the circular arc hook portion of part adaptation with described the second side plate of exceeding of described the second bearing pin, described in each elastic component around described two at least one circles of spacing block set of corresponding side and described in each the other end of elastic component be bent into shape with described two spacing block set adaptations with clip outside described two spacing block sets.
7. the distribution device for motor according to claim 4, it is characterized in that, the two ends of described the first bearing pin are extended to both sides respectively and are exceeded described two the first rollers, and the described first end of described two link arms is connected pivotly with the two ends of described the first bearing pin respectively.
8. the distribution device for motor according to claim 3, is characterized in that, the both sides of described driving profile are respectively arranged with the first blocked part, and the top of described valve is folded between the first blocked part of respective drive profile both sides.
9. the distribution device for motor according to claim 8, it is characterized in that, the two ends of described driving profile are respectively arranged with the second blocked part, and the top that described the second blocked part is suitable for the corresponding valve of backstop is to prevent this valve and corresponding driving profile slippage.
10. the distribution device for motor according to claim 1, it is characterized in that, described outer shaft cam is interference fitted on described outer shaft, described interior axis cam Spielpassung is on described outer shaft, on described outer shaft, be formed with restraining groove, described interior axis cam is connected by wearing the backing pin of described interior axis cam, described restraining groove and described interior axle.
11. distribution devices for motor according to claim 1, is characterized in that,
Described link arm is configured to oblong flat board;
Described phase-regulating mechanism is phase discriminator.
12. 1 kinds of vehicles, is characterized in that, comprise according to the distribution device for motor described in any one in claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410033597.XA CN103758602B (en) | 2014-01-23 | 2014-01-23 | For the valve actuating mechanism of engine and the vehicle with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410033597.XA CN103758602B (en) | 2014-01-23 | 2014-01-23 | For the valve actuating mechanism of engine and the vehicle with it |
Publications (2)
| Publication Number | Publication Date |
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| CN103758602A true CN103758602A (en) | 2014-04-30 |
| CN103758602B CN103758602B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410033597.XA Expired - Fee Related CN103758602B (en) | 2014-01-23 | 2014-01-23 | For the valve actuating mechanism of engine and the vehicle with it |
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| CN (1) | CN103758602B (en) |
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| CN203097983U (en) * | 2012-12-31 | 2013-07-31 | 长城汽车股份有限公司 | Fully variable valve stroke device |
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| CN1357079A (en) * | 1998-01-19 | 2002-07-03 | 达勒脱控股有限公司 | Cam and cam followers for engines |
| WO2003016684A1 (en) * | 2001-08-18 | 2003-02-27 | Mechadyne Plc | Adjustable valve control system with twin cams and a cam lift summation lever |
| US6467445B1 (en) * | 2001-10-03 | 2002-10-22 | Delphi Technologies, Inc. | Deactivation and two-step roller finger follower having a slider bracket |
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| Publication number | Publication date |
|---|---|
| CN103758602B (en) | 2017-07-28 |
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