CN105814336A - Pendulum torsion damping device with improved effectiveness of filtration - Google Patents

Pendulum torsion damping device with improved effectiveness of filtration Download PDF

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Publication number
CN105814336A
CN105814336A CN201480067746.2A CN201480067746A CN105814336A CN 105814336 A CN105814336 A CN 105814336A CN 201480067746 A CN201480067746 A CN 201480067746A CN 105814336 A CN105814336 A CN 105814336A
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China
Prior art keywords
oscillating
stroke
exponent number
scope
oscillating stroke
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Granted
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CN201480067746.2A
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Chinese (zh)
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CN105814336B (en
Inventor
R.维尔胡格
O.马雷查尔
B.库蒂里耶
H.马埃
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Valeo Embrayages SAS
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Valeo Embrayages SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
    • F16F2236/08—Torsion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/024—Springs torsional

Abstract

A pendulum torsion damping device, intended to be linked to an internal combustion engine of main order N, comprises oscillating weights movably mounted on a support. The local order (OR) of the pendulum is sub-adapted, and substantially lower than N over a range of pendular displacement (DBT) close to the maximum displacement (C***). This device makes it possible to obtain effective pendular damping with a reduction in pendulum saturation phenomena at low engine speed, without causing saturation phenomena at high engine speed.

Description

There is the swing type torsional vibration damper of the filter efficiency of improvement
Technical field
The present invention relates to a kind of for being connected to torsional vibration damper explosive motor, clap oscillator type.
Background technology
The torsional vibration damper of swing type well known in the art, it is also referred to as clap oscillator or goods of furniture for display rather than for use, and described device especially but equips the drive mechanism of motor vehicles nonexclusively.
In vehicle transmissions, at least one torsional vibration damper is generally made to be associated with the clutch that can optionally connect the engine to change speed gear box, this clutch such as friction clutch or include the fluid power coupling arrangement of lock-up clutch, this is to filter the vibration owing to the rotation inhomogeneities (acyclismes) of electromotor causes.
It practice, explosive motor due in cylinder detonation in succession and there is rotation inhomogeneities, these rotate inhomogeneities and change in particular according to number of cylinders.
Therefore, the function that the shock absorber part of torsional vibration damper has is in that to filter by rotating the vibration that inhomogeneities produces, and intervenes before engine moment is passed to change speed gear box.
Otherwise, the vibration entering change speed gear box can cause that particularly undesirable impact, noise or sound are created disturbances in this operating change speed gear box.
This is to use one of reason of one or more shock absorber parts that can filter at least one vibration determining frequency.
Document US-2010/0122605 describes a kind of dampening apparatus swinging type.
This vibration absorber includes at least one support member being rotationally coupled to engine shaft and at least one oscillating body, multiple oscillating bodies that to be generally on this support member circumferentially distributed.The vibration of these oscillating bodies produces vibration moment, and this vibration moment and the vibration moment coming from electromotor offset, and the part thus absorbing electromotor rotates inhomogeneities.The oscillating body support member of torsional vibration damper generally connects with case axle.
The balancing weight that each oscillating body is generally arranged in support member both sides by a pair is constituted, the two balancing weight or connecting (being typically inserted through the groove of support member) by direct mechanical interconnects, or is interconnected by link rod.Hereinafter, by two balancing weights of such face-to-face connection collectively regarded as single oscillating body, described overall with or without link rod.
Alternately, the single balancing weight that each oscillating body can be movably mounted on support member.In this case, support member can be formed by two elements alternatively, and oscillating body is movably arranged between these two elements.
Very in general manner, such oscillating body passes through at least one rolling element, is movably mounted on support member usually by two even more rolling elements.
Generally, the barycenter of each oscillating body is freely about almost parallel with the rotation axis of engine shaft vibration axis vibration, and is driven around this rotation axis and rotates.
In response to rotation scrambling, oscillating body moves so that the barycenter of each oscillating body vibrates around this vibration axis.Subsequently, indistinction is used term " torsional vibration damper " and " goods of furniture for display rather than for use ".
Each oscillating body is generally used to include the goods of furniture for display rather than for use of two rolling elements (or roller), this goods of furniture for display rather than for use is referred to as " two-wire goods of furniture for display rather than for use ", its better damping property of performance allowing to obtain goods of furniture for display rather than for use that include single rolling element than each oscillating body, that be referred to as " single line goods of furniture for display rather than for use ".
In oscillating motion process, each oscillating body of goods of furniture for display rather than for use is hence around the intrinsic neutral position of this oscillating body, with left side stroke and right side stroke (it is probably different) vibration.This neutral position is corresponding to to be sufficient so that equilbrium position during speed that oscillating body is radially outward driven by centrifugal force, homogeneous constant driving goods of furniture for display rather than for use.
On the one hand barycenter and each rolling element and support member and the oscillating body that is associated contact on the other hand point each carry out oscillating movement around the neutral point corresponding to neutral position.Usually, the oscillating stroke except neutral position is corresponding to being perpendicular on the assigned direction of the radial direction of this barycenter in the neutral position the barycenter abscissa x of (such as in the direction of rotation of goods of furniture for display rather than for use).Rolling element on the one hand with support member and on the other hand with the abscissa of each contact point of oscillating body with mode one to one corresponding to oscillating stroke each numerical value with, this abscissa calculates in the same manner as previously described on the vertical line through the radial direction of corresponding neutral point.Thus, (barycenter) oscillating stroke given range is also with the excursion corresponding to rolling element and oscillating body or the abscissa with the contact point of support member of the mode one to one.
The barycenter of each oscillating body is determined so as to make under the influence of centrifugal force relative to radial position and this barycenter of the rotation axis of engine shaft relative to the distance of vibration axis, the frequency of oscillation of each oscillating body is proportional to the rotary speed of engine shaft, and this multiple can for example with the numerical value of the grade close to the leading harmonic wave rotating inhomogeneities.
Goods of furniture for display rather than for use is calculated to make it to mate given explosive motor, and especially coupling and relevant, each revolution of excitation number of times that burns in this cylinder.Therefore, generally the exponent number N of explosive motor is defined as the half of cylinder number.Therefore, for including the electromotor of the cylinder between 1 to 12, N can change between 0.5 to 6, for instance the 4 cylinder engine numerical value for raw twice combustion of often changing the line of production are 2.
Therefore the goods of furniture for display rather than for use being associated with this electromotor must mate the exponent number of electromotor, and the rule of prior art causes the rolling path designed in a precise manner on pendular body and on support member, to obtain the goods of furniture for display rather than for use exponent number of closely electromotor exponent number N (when describing Fig. 1 later, this term will be explained further), and this goods of furniture for display rather than for use exponent number is typically slightly greater than this exponent number N, such as equal to Nx1.04, to consider that oscillation system is in time due to the abrasion caused that rubs.
But, it was observed that the vibration damping rotating inhomogeneities is always not perfect, and the most regularly there is the engine speed caused about the swing saturation problem to the filtration rotating inhomogeneities.
By the application known structure goods of furniture for display rather than for use of DE102011076790 so that its exponent number is less than the exponent number of electromotor.
It addition, by the known a kind of goods of furniture for display rather than for use of application DE102011085400, the exponent number of this goods of furniture for display rather than for use is change.
Summary of the invention
An object of the present invention is in that restriction or even eliminates these swing saturated phenomenons.
For this, an object of the invention is in that to provide the swing type torsional vibration damper of a kind of two-wire type, it is for being connected to the explosive motor with main exponent number N, , this device includes the support member that rotatably moves around rotation axis and one group of hunt body being movably mounted on this support member, each oscillating body of this group can vibrate on two rolling elements being associated with this oscillating body, these two rolling elements and support member and with this oscillating body Structure deformation, determine there is track on each edge on this oscillating body in these rolling elements and on the edge of support member, in these tracks every is associated with left side oscillating stroke and right side oscillating stroke in the both sides of neutral position,
It is characterized in that, on support member and on each oscillating body track is configured such that existence:
-left side oscillating stroke the first scope, it is arranged to the position exceeding the given percentage ratio representing left side full swing stroke, this given percentage ratio is especially 50%, on the left of this in oscillating stroke the first scope, the local exponent number of this oscillating body group is limited with greatest measure, i.e. G1max, this greatest measure maximum equal to 0.99xN, be preferably equivalent to 0.98xN, or maximum equal to 0.96N, or equal to 0.95N；
-right side oscillating stroke the first scope, it is arranged to the position exceeding the given percentage ratio representing right side full swing stroke, this given percentage ratio is especially 50%, on the right side of this in oscillating stroke the first scope, the local exponent number of goods of furniture for display rather than for use is limited with greatest measure, i.e. D1max, this greatest measure maximum equal to 0.99xN, be preferably equivalent to 0.98xN, or maximum equal to 0.96N, or equal to 0.95N；
Usually, be in left side or right side determination oscillating stroke position in the local exponent number of this pendular body group, namely OPlocal be defined as follows:
For any rolling element contacted with oscillating body, local exponent number is identical for each rolling element, and this local exponent number is equal to:
OP l o c a l = R g - ( R b p + R m - ( r b p + r m ) ) R b p + R m - ( r b p + r m )
Wherein:
-Rg is the distance between oscillating body barycenter and pivot center；
-Rbp is the radius of curvature at the some place contacted with this rolling element of the track on support member,
-Rml is the radius of curvature at the some place contacted with this rolling element of the track on oscillating body,
-rbp is this rolling element radius of curvature at the some place contacted with support member,
-rm is this rolling element radius of curvature at the some place contacted with oscillating body.
Have been found that, this feature according to the present invention, namely exist and exceed the left side of average wobble stroke and the feature of right side oscillating stroke scope, on the left of this and in the oscillating stroke scope of right side, swing type torsional vibration damper (or goods of furniture for display rather than for use) has exponent number relatively small, relative to the electromotor too small coupling of exponent number N, this feature allows for big oscillating stroke, reducing or eliminate the saturated of goods of furniture for display rather than for use, big oscillating stroke is corresponding to the rotation inhomogeneities during the relatively low engine speed stage.
The first embodiment according to assembly of the invention, in the whole amplitude of left side and right side oscillating stroke, local exponent number is less than or equal to 0.99xN, it is preferably equivalent to 0.98xN, and most preferably belongs to interval [0.70N, 0.98N], or even belong to interval [0.74N, 0.96N], or even belong to interval [0.76N, 0.95N].Have observed that, although this causes the imperfect coupling of goods of furniture for display rather than for use for relatively small oscillating stroke (engine speed corresponding to relatively high), this imperfect coupling is not resulted in the saturated of goods of furniture for display rather than for use, and goods of furniture for display rather than for use remains effectively for the filtration therefore including rotation inhomogeneities at high engine speeds.
Especially, local exponent number can be constant in the whole amplitude of left side and right side oscillating stroke.This structure of track allows to use constant radius of curvature (forming the track of ring part) especially, and this is relatively more easily performed than the track of the radius of curvature with change at the manufacture view of goods of furniture for display rather than for use.
Second embodiment of the invention, on support member and these oscillating bodies in each on track be configured such that existence :-
Left side oscillating stroke the second scope, it starts to extend from described neutral position, and less than described left side oscillating stroke the first scope, on the left of this in oscillating stroke the second scope, local exponent number is limited with minimum value, i.e. G2min, and this minimum value is minimum equal to 0.95N, and less than 1.10N；
-right side oscillating stroke the second scope, it starts to extend from described neutral position, and less than described right side oscillating stroke the first scope, on the right side of this in oscillating stroke the second scope, local exponent number is limited with minimum value, i.e. D2min, and this minimum value is minimum equal to 0.95N, and less than 1.10N；
And wherein:
G1max be included in G2min 2% to 30% between numerical value and preferably be included in G2min 3% to 25% between numerical value less than G2min；
D1max be included in D2min 2% to 30% between numerical value and preferably be included in D2min 3% to 25% between numerical value less than D2min；
Accordingly, for the relatively low engine rotary speed corresponding to relatively large oscillating stroke, the radius of curvature of track is relatively large, local exponent number OPlocalRelatively small, this saturation effect causing reducing or eliminate goods of furniture for display rather than for use.This corresponds to left side and right side oscillating stroke the first scope.
Conversely, for the relatively high engine rotary speed corresponding to relatively small oscillating stroke, the radius of curvature of track is relatively small, local exponent number OPlocalRelatively large, this causes the good filtration rotating inhomogeneities.This corresponds to left side and right side oscillating stroke the second scope.
Left side oscillating stroke the first scope can be identical with right side oscillating stroke the first scope.Relative to the neutral point corresponding to neutral position, left side oscillating stroke the second scope can also be identical with right side oscillating stroke the second scope.
Left side and right side oscillating stroke the first scope extend up to corresponding left side and right side maximum travel position respectively on corresponding oscillating stroke interval, and this oscillating stroke interval is preferably respectively included between corresponding left side and total interval 10% to 49% of right side oscillating stroke, is preferably respectively included between corresponding left side and total interval 15% to 35% of right side oscillating stroke.
Left side and right side oscillating stroke the second scope begin at from neutral position respectively and extend corresponding oscillating stroke interval, and this oscillating stroke interval is preferably respectively included between corresponding left side and total interval 50% to 90% of right side oscillating stroke, is preferably respectively included between corresponding left side and total interval 65% to 80% of right side oscillating stroke.
The transition range that left side and first and second scope of right side oscillating stroke are advantageously respectively used to local exponent number is spaced apart, and this transition range is preferably has the local successional transition range of exponent number.
An optimal way second embodiment of the invention, left side and local, right side exponent number respectively from neutral position by non-decreasing or in the way of successively decreasing, preferably substantially continuous change, until corresponding left side and right side full swing travel position, so that the local exponent number at left side and full swing travel point place, right side is included in interval [0.70 with the ratio of the local exponent number in corresponding left side and right side neutral position respectively, 0.95] in, and be preferably included in interval [0.80,0.90].
The 3rd embodiment according to the present invention, local exponent number strictly successively decreases from neutral position, until left side and right side full swing travel position.
Advantageously, for each oscillating body, respectively according to left side and right direction, representing that the curved portion of the differentiation of the radius of curvature of the barycenter (CM) path in corresponding left side and right side oscillating stroke the first scope forms clothoid part, described left side and right direction are considered separately as the vertical line of the radial direction along the position through barycenter (CM) in the neutral position.
According to above-mentioned second and the 3rd embodiment, local exponent number change, namely local exponent number adopts the numerical value that at least two is different during oscillating stroke.
Finally, another of the present invention aims at a kind of single, double or multi-clutch of offer, and this clutch includes torsional vibration damper as defined above.
Accompanying drawing explanation
Following exemplarily only provide by reading and with reference to the explanation that accompanying drawing is made, be better understood with the present invention, in the accompanying drawings:
Fig. 1 is the simplification axial view of a part for the torsional vibration damper according to prior art, and this torsion damping equipment belongs to clutch, it include goods of furniture for display rather than for use support member and be arranged on this support member, in the neutral position in oscillating body；
Fig. 2 is the view similar with the view of Fig. 1, and this vibration absorber is in the different configuration of its operation, corresponding to left side maximum travel position；
Fig. 3 illustrates a part for goods of furniture for display rather than for use in a simplified manner, its local order parameter allowing accurately to define this goods of furniture for display rather than for use；
Fig. 4 illustrates three right side tracks on oscillating body, and wherein one corresponds to prior art, and two other corresponds respectively to first and second embodiments of the present invention；
Fig. 5 illustrates the differentiation of the radius of curvature of the track of Fig. 4；
Fig. 6 illustrates the differentiation track corresponding to Fig. 4, oscillating body exponent number；
Fig. 7 illustrates the differentiation of the oscillating body exponent number for the device according to third embodiment of the invention；
Fig. 8 illustrates the differentiation of the radius of curvature of the track for the device according to third embodiment of the invention；
Fig. 9 illustrates a kind of enforcement modification, and this enforcement modification allows to avoid rolling element to block；
Figure 10 illustrates a part of Fig. 9 in the way to enlarge；
Figure 11 illustrates the path in this oscillating body oscillatory process of the oscillating body barycenter CM for the device according to four embodiment of the invention；And
Figure 12 illustrates the differentiation of the radius of curvature of the curve of Figure 11.
Detailed description of the invention
Referring now to Fig. 1, schematically and partly illustrate torsional vibration damper 2 in the figure, it includes support member 4, this support member includes the peripheral part that global shape is planar annular, being movably mounted with multiple swing type oscillating body on it, the plurality of swing type oscillating body is circumferentially distributed on this support member 4.In FIG, only illustrating that two connections belong to the link rod 6 of two balancing weights of same oscillating body, the two balancing weight is disposed in the both sides of support member 4.The two balancing weight and link rod 6 belong to this same oscillating body.
Oscillating body rolls on the support 4 by means of two rolling elements 8, extends in the profile otch 10 in each comfortable support member 4 of these rolling elements.Oscillating body is shown at neutral position in FIG, and the contact point of this oscillating body and each rolling element is at neutral point NE.
In fig. 1 it is illustrated that the Structure deformation of oscillating body and support member 4, this Structure deformation realizes at link rod 6 place.In other structure, this Structure deformation can be located at two balancing weight places, and is not at the link rod place of connection the two balancing weight.
Also show the end points C of right side (relative to neutral point) track on oscillating body, on the right side of this, track is illustrated by camber line NE-C, and this camber line is corresponding to the set of the rolling element contact point between neutral point and the contact point in the left side maximum travel position (relative to neutral position) of oscillating body.
Maximum travel position on the left of this of oscillating body is it is shown in fig. 2, compared with the neutral position of Fig. 1, and oscillating body link rod 6 has relative to support member stroke to the left in this Fig. 2.
Stroke or oscillating stroke are the distances between the position of oscillating body barycenter and the position of this barycenter in the neutral position.
Similarly, by the track definition on support member it is the set respectively correspond toing rolling element with the contact point of support member.
All oscillating bodies, generally on oscillating body, have identical left side track (from neutral point) identical for two rolling elements on the one hand, have identical right side track (from neutral point) identical for two rolling elements on the other hand.On the contrary, right side track may differ from left side track.
This is the same for the track on support member.
The track 12 on oscillating body and the track 14 on support member is illustrated in more generalized mode referring now to Fig. 3, this figure.
Fig. 3 corresponding to be different from Fig. 1 and Fig. 2 goods of furniture for display rather than for use structure, rolling element 8 have that contact with oscillating body, there is radius of curvature rmFirst area 16 and contact with support member, there is different radius of curvature rbpSecond area 18.Fig. 1 and Fig. 2 corresponds to rm=rbpSpecial case.Point CR represents the center of rotation (and distance is not representational) through goods of furniture for display rather than for use rotation axis.
Goods of furniture for display rather than for use local exponent number (ordrelocal) in defined location, i.e. OPlocalDefined by general below equation:
OP l o c a l = R g - ( R b p + R m - ( r b p + r m ) ) R b p + R m - ( r b p + r m )
Wherein:
-RgIt it is the distance between oscillating body barycenter and goods of furniture for display rather than for use rotation axis；
-RbpIt is the radius of curvature at the some place contacted with rolling element of the track on support member,
-RmlIt is the radius of curvature at the some place contacted with rolling element of the track on oscillating body,
-rbpIt is the rolling element radius of curvature at the some place contacted with support member,
-rmIt it is the rolling element radius of curvature at the some place contacted with oscillating body.
Referring now to Fig. 4, the figure shows three right side tracks, the wherein goods of furniture for display rather than for uses corresponded to according to prior art on oscillating body, two other corresponds respectively to the first and second embodiments of the goods of furniture for display rather than for use according to the present invention.
The right direction represented by abscissa x is considered the vertical line of the radial direction along the position through track neutral point, and this track neutral point is corresponding to the neutral position of oscillating stroke.Vertical coordinate axis y starts to extend along radial direction from neutral point NE.All right sides track on different oscillating bodies is assumed to be mutually the same, and identical with the left side track on these oscillating bodies, and this is also the same for the track on support member.
Track on the right side of in the of first: correspond to the top trace of a some NE (neutral point), M (middle position abscissa point), A and C, this top trace is corresponding to traditional track (right side), it has substantially uniform radius of curvature R, and when having the four-stroke engine of exponent number OM=2, correspondence local exponent number, the i.e. OR of goods of furniture for display rather than for use are constant and are generally near 2.04.It has been observed that such goods of furniture for display rather than for use shows satisfactory at medium and high engine speeds, but under the low engine speed being usually less than 1500 revs/min, when high acceleration, it is in saturation, and therefore no longer fulfils its filtering function to accelerating suddenly.
Track on the right side of in the of second: the bottom trace NE-C* being represented by dotted lines, goods of furniture for display rather than for use corresponding to according to first embodiment of the invention: the radius of curvature of this track is also substantially uniform, but has numerical value R1 > R, and the local exponent number of correspondence is also constant, but it is significantly less than 2.04, for instance equal to 1.8.The exponent number of goods of furniture for display rather than for use (or oscillating body group) thus relative to electromotor, exponent number equal to 2 be too small coupling.Thus cause that goods of furniture for display rather than for use has saturation range more much smaller, even for zero corresponding under the low engine speed of relatively large oscillating stroke.But, additionally observe corresponding under the middle and high engine speed of relatively small oscillating stroke, relative to traditional goods of furniture for display rather than for use with uniform exponent number 2.04, its performance is only slightly reduced surprisingly so that do not observe swing saturated phenomenon.
Thus, allow to reduce especially or eliminate to swing saturated phenomenon according to this first embodiment of the swing type torsional vibration damper (or goods of furniture for display rather than for use) of the two-wire type of the present invention.
Corresponding to some NE, M, A, B and C**, centre right side the 3rd track, corresponding to second embodiment of the present invention.
The NE-A part of this track be identical and total according to prior art, first track with radius of curvature R corresponding part.
On the contrary, the terminal part of this track, i.e. B-C** part has radius of curvature R 1 > R.Thus cause that the goods of furniture for display rather than for use (or oscillating body group) exponent number in this terminal part is less than the exponent number on camber line NE-A, described terminal part is corresponding to left side oscillating stroke the first scope (left side stroke is corresponding to a part for the right side track on oscillating body), stating camber line NE-A corresponding to from left side oscillating stroke the second scope that neutral point NE starts, this neutral point NE corresponds to zero stroke.
Therefore, oscillating stroke the second scope in left side starts to extend from the some NE of neutral position, and less than left side oscillating stroke the first scope.Local exponent number in this second scope is equal to 2.04, and is therefore limited with minimum value G2min, and this minimum value is minimum equal to 0.95N, and less than 1.10N, N=2 simultaneously.
Left side oscillating stroke the first scope extends between a B and some C**, and the local exponent number of oscillating body group (being advantageously all oscillating bodies of goods of furniture for display rather than for use) is limited with greatest measure and G1max=1.7 in this range.
Between A and B, radius of curvature R 2 (x) increases along with abscissa x, to guarantee the continuous transition between oscillating stroke the first and second scope of left side.
Implement embodiment relative to first, further improve the operation of goods of furniture for display rather than for use:
-for the relatively low engine speed corresponding to relatively large oscillating stroke, the radius of curvature of track is relatively large, local exponent number OPlocalRelatively small, this saturation effect causing reducing or eliminate goods of furniture for display rather than for use.
-conversely, for the relatively high engine speed corresponding to relatively small oscillating stroke, the radius of curvature of track is relatively small, exponent number OPlocalRelatively large, this causes the good filtration rotating inhomogeneities.
Referring now to Fig. 5 and Fig. 6.Fig. 5 illustrates the differentiation of the radius of curvature of the track of Fig. 4.
For track on the right side of first corresponding to prior art (upper curve of Fig. 4), radius of curvature is constant and is equal to R.
For track on the right side of second corresponding to first embodiment of the invention (lower curve of the dashed line form of Fig. 4), radius of curvature is constant and is equal to R1, simultaneously R1 > R.
For track on the right side of the 3rd corresponding to second embodiment of the invention (centre), first radius of curvature adopts numerical value R from neutral point NE as in prior art (the upper right track of Fig. 4), until some A, then transitional region between A and B adopts incremental value R2 (x), to reach and to keep constant value R1, until left side range point C**.Therefore, radius of curvature adopts the first numerical value R from neutral point NE, then, after transitional region, adopts higher numerical value R1 towards left side range point C** when advancing.
In this embodiment:
Left side oscillating stroke the first scope is corresponding to path portion B-C**；
Left side oscillating stroke the second scope is corresponding to path portion NE-A.
Typically on the left side track on oscillating body and the right side on support member and left side track, similar feature is used, and the left side track on described oscillating body corresponds to right side oscillating stroke.In these tracks every is generally in the first scope (relatively large radius of curvature of the oscillating stroke defined in a similar fashion, relatively small local exponent number) the second scope (relatively small radius of curvature, relatively large local exponent number) of neutralizing oscillating stroke includes different radius of curvature.
Fig. 6 illustrates the differentiation according to stroke DBT of the oscillating body exponent number of the track corresponding to Fig. 4.
For the track (top) on the right side of the first of prior art that corresponds to of Fig. 4, local exponent number OPlocal is constant and is equal to 2.04, until some C.
For track on the right side of second corresponding to first embodiment of the invention (lower curve of the dashed line form of Fig. 4), local exponent number OPlocal is constant and is equal to 1.7, until some R1, simultaneously R1 > R.
For track (centre) on the right side of the 3rd corresponding to second embodiment of the invention, local exponent number OPlocal from neutral point NE first as adopted numerical value 2.04 in the prior art (the upper right track of Fig. 4), until some A, then transitional region between A and B reduces, to reach and to keep constant value 1.7, until left side range point C**.
Left side range point C, C* and C** corresponding to the different tracks being considered on oscillating body can have identical abscissa x or different abscissas.
Fig. 7 is for illustrating the differentiation according to stroke DBT of the oscillating body exponent number according to the device of third embodiment of the invention.
In the 3rd embodiment, local exponent number OPlocal starts to reduce from the conventional numeric 2.04 at neutral point place in a continuous manner, until numerical value 1.7.
Explicitly, as shown in FIG. 8, radius of curvature starts to increase from neutral point NE in a continuous manner, until range point C***.
3rd embodiment allows the coupling more preferably further of goods of furniture for display rather than for use: abscissa x and stroke DBT more increases (this rotary speed corresponding to successively decreasing), radius of curvature more increases, and explicitly, local exponent number OPlocal more reduces, and is thus conducive to filtration that mate, to rotation inhomogeneities with rotary speed.
Above-mentioned Fig. 4 to Fig. 8 is corresponding to the right side track on oscillating body, the locus of the point namely contacted with any one in rolling element corresponding to oscillating body.For the left side track on the left side track on oscillating body or the right side track on support member or support member, it may have identical feature and similar curve.
Referring now to Fig. 9 and Figure 10, relative to the goods of furniture for display rather than for use illustrated partly in Fig. 1 and Fig. 2, it illustrates a kind of enforcement modification, this enforcement modification allows to avoid rolling element 8 to block.Figure 10 illustrates a part of Fig. 9 in the way to enlarge.
In order to avoid one or more rolling elements possibly off and exceed range point, rolling path (here on link rod 6) on oscillating body has been extended and has exceeded range point C (or C**, or C***).When oscillating body is but without centrifugalization, such structure can be resulted particularly in when starting the engine.
Actual path prolongation corresponds to camber line CD.The radius of curvature of these prolongations can be advantageously included between the diameter DIA of rolling element 8 and 1.5 times of this diameter DIA.
Design otch on oscillating body and support member, so that when oscillating body is in when inner radial only supports state (being represented in figure 9 and in figure 10) by contact (the some T place on profile 10) of link rod 6 with the inner radial planar section of otch, distance H1, H2 and H3 in Figure 10 meet relation: H3=H2 H1 < DIA, wherein:
H1 is the maximum radial height of profile groove, and link rod receives in this groove；
H2 is the maximum radial height of link rod, and
DIA is the diameter of the rolling element 8 contacted with link rod 6.
Thus, even if rolling element 8 can not leave to the right in exceeding link rod 6 and being stuck in the right part of profile 10 during transitional stage.
The 4th embodiment of the present invention is corresponded to referring now to Figure 11 and Figure 12, these figure.
Figure 11 illustrates the barycenter CM of oscillating body path in this oscillating body oscillatory process.Illustrate only the right side path relative to neutral position.
The right direction represented by abscissa x is considered the vertical line of the radial direction of the position along the barycenter CM in the neutral position.Axis of abscissas y extends along the radial direction of the barycenter in the neutral position.
Region BC** corresponds to right-hand corner stroke the first scope.Region AB corresponds to transitional region, and the region between zero abscissa point and some A is corresponding to right-hand corner stroke the second scope.
Figure 12 illustrates the differentiation of this right side rail curvature of a curve radius of barycenter CM.According to four embodiment of the invention, this radius of curvature is first constant in angle stroke the second scope, until some A.Then, this radius of curvature starts to increase in transitional region AB, then increases further in angle stroke the first scope, until right side range point C**.
It is highly preferred that this curve is the clothoid part between an A and some C**.Especially, therefore the curved portion of the radius of curvature R in expression right-hand corner stroke the first scope BC** is also clothoid part.
Generally, this is also the same for the differentiation of the radius of curvature of left side barycenter path.
Have been found that this allows greatly reduce or eliminate the rolling element 8 slip on oscillating body and/or on support member.
In more general mode, those skilled in the art can according to compatible from the present invention, implement the present invention from the known modification of prior art and different embodiments, and without departing from the scope of the present invention.

Claims (10)

1. the swing type torsional vibration damper (2) of a two-wire type, it is for being connected to the explosive motor with main exponent number N, this device includes the hunt body can being movably mounted on this support member (4) around the support member (4) of rotation axis rotary motion and one group, each oscillating body of this group can both in the upper vibration of two rolling elements (8) being associated with this oscillating body, said two rolling element and described support member and with this oscillating body Structure deformation, each in described rolling element determines there is track on the edge of this oscillating body and on the edge of described support member, in these tracks every is associated with left side oscillating stroke and right side oscillating stroke in neutral position both sides,
It is characterized in that, upper at described support member (4) and on each in described oscillating body track is configured such that existence:
Left side oscillating stroke the first scope, it is arranged to the position exceeding the given percentage ratio representing left side full swing stroke, this given percentage ratio is especially 50%, on the left of this in oscillating stroke the first scope, the local exponent number of this pendular body group is limited with greatest measure, i.e. G1max, this greatest measure is maximum equal to 0.99xN, it is preferable that equal to 0.98xN；
Right side oscillating stroke the first scope, it is arranged to the position exceeding the given percentage ratio representing right side full swing stroke, this given percentage ratio is especially 50%, on the right side of this in oscillating stroke the first scope, the local exponent number of described goods of furniture for display rather than for use is limited with greatest measure, i.e. D1max, this greatest measure is maximum equal to 0.99xN, it is preferable that equal to 0.98xN；
Left side oscillating stroke the second scope, it starts to extend from described neutral position, and less than described left side oscillating stroke the first scope, on the left of this in oscillating stroke the second scope, described local exponent number is limited with minimum value, i.e. G2min, and this minimum value is minimum equal to 0.95N, and less than 1.10N；
Right side oscillating stroke the second scope, it starts to extend from described neutral position, and less than described right side oscillating stroke the first scope, on the right side of this in oscillating stroke the second scope, described local exponent number is limited with minimum value, i.e. D2min, and this minimum value is minimum equal to 0.95N, and less than 1.10N；
And wherein:
G1max be included in G2min 2% to 30% between numerical value and preferably be included in G2min 3% to 25% between numerical value less than G2min；
D1max be included in D2min 2% to 30% between numerical value and preferably be included in D2min 3% to 25% between numerical value less than D2min；
This pendular body group local exponent number on the left side determined or oscillating stroke position, right side, i.e. OPlocalGenerally it is defined as follows:
For any rolling element contacted with oscillating body, described local exponent number is identical for each rolling element, and described local exponent number is equal to:
OP l o c a l = R g - ( R b p + R m - ( r b p + r m ) ) R b p + R m - ( r b p + r m )
Wherein:
RgIt it is the distance between the barycenter of described oscillating body and described rotation axis；
RbpIt is the radius of curvature at the some place contacted with described rolling element of the track on described support member,
RmlIt is the radius of curvature at the some place contacted with described rolling element of the track on described oscillating body,
rbpIt is the described rolling element radius of curvature at the some place contacted with described support member,
rmIt it is the described rolling element radius of curvature at the some place contacted with described oscillating body.
2. device according to claim 1, wherein:
Relative to described neutral point, described left side oscillating stroke the first scope is identical with described right side oscillating stroke the first scope；
Relative to described neutral point, described left side oscillating stroke the second scope is identical with described right side oscillating stroke the second scope.
3. the device according to any one of claim 1 and 2, wherein:
Left side and right side oscillating stroke the first scope extend up to corresponding left side and right side maximum travel position respectively on corresponding oscillating stroke interval, this oscillating stroke interval is respectively included between corresponding left side and total interval 10% to 49% of right side oscillating stroke, it is preferable that be respectively included between corresponding left side and total interval 15% to 35% of right side oscillating stroke；
Left side and right side oscillating stroke the second scope begin at from described neutral position respectively and extend corresponding oscillating stroke interval, this oscillating stroke interval is respectively included between corresponding left side and total interval 50% to 90% of right side oscillating stroke, it is preferable that be respectively included between corresponding left side and total interval 65% to 80% of right side oscillating stroke；
Left side and first and second scope of right side oscillating stroke are respectively used to the transition range of described local exponent number and separate, and this transition range preferably has the described local successional transition range of exponent number.
4. the device according to any one in claims 1 to 3, wherein, described left side and right side local exponent number respectively from described neutral position by be incremented by the way of, preferably substantially continuous change, until corresponding left side and right side full swing travel position, so that being included in interval [0.70 at the local exponent number at corresponding left side and range point place, right side with the ratio of the local exponent number of described neutral position, 0.95] in, it is preferably included in interval [0.80,0.90].
5. device according to claim 4, wherein, local exponent number from described neutral position until left side or right side full swing travel position are strictly successively decreased.
6. the device according to any one in claim 4 and 5, wherein, for each oscillating body, respectively according to left side and right direction, representing that the curved portion of the differentiation of the radius of curvature of the described barycenter (CM) path in corresponding left side and right side oscillating stroke the first scope forms clothoid part, described left side and right direction are considered separately as the vertical line of the radial direction of the position along the described barycenter (CM) through being in described neutral position.
7. the swing type torsional vibration damper (2) of a two-wire type, it is for being connected to the explosive motor with main exponent number N, this device includes the oscillating body can being movably mounted on this support member (4) around the support member (4) of rotation axis rotary motion and one group, each oscillating body of this group can in the upper vibration of two rolling elements (8) being associated with this oscillating body, said two rolling element and described support member and with this oscillating body Structure deformation, each in these rolling elements determines there is track on the edge of this oscillating body and on the edge of described support member, in these tracks every is associated with left side oscillating stroke and right side oscillating stroke in the both sides of neutral position,
It is characterized in that, upper at described support member (4) and on each in described oscillating body track is configured such that existence:
Left side oscillating stroke the first scope, it is arranged to the position exceeding the given percentage ratio representing left side full swing stroke, this given percentage ratio is especially 50%, on the left of this in oscillating stroke the first scope, the local exponent number of this pendular body group is limited with greatest measure, i.e. G1max, this greatest measure is maximum equal to 0.99xN, it is preferable that equal to 0.98xN；
Right side oscillating stroke the first scope, it is arranged to the position exceeding the given percentage ratio representing right side full swing stroke, this given percentage ratio is especially 50%, on the right side of this in oscillating stroke the first scope, the local exponent number of described goods of furniture for display rather than for use is limited with greatest measure, i.e. D1max, this greatest measure is maximum equal to 0.99xN, it is preferable that equal to 0.98xN；
Described local exponent number belongs to interval [0.74N, 0.96N] in the whole amplitude of left side and right side oscillating stroke,
This pendular body group local exponent number in given left side or oscillating stroke position, right side, i.e. OPlocalGenerally it is defined as follows:
For any rolling element contacted with oscillating body, described local exponent number is identical for each rolling element, and this local exponent number is equal to:
OP l o c a l = R g - ( R b p + R m - ( r b p + r m ) ) R b p + R m - ( r b p + r m )
Wherein:
RgIt it is the distance between the barycenter of described oscillating body and described rotation axis；
RbpIt is the radius of curvature at the some place contacted with described rolling element of the track on described support member,
RmlIt is the radius of curvature at the some place contacted with described rolling element of the track on described oscillating body,
rbpIt is the described rolling element radius of curvature at the some place contacted with described support member,
rmIt it is the described rolling element radius of curvature at the some place contacted with described oscillating body.
8. device according to claim 7, wherein, in the whole amplitude of left side and right side oscillating stroke, described local exponent number belongs to interval [0.78N, 0.92N].
9. the device according to claim 7 or 8, wherein, described local exponent number constant in the whole amplitude of left side and right side oscillating stroke.
10. a clutch, it is characterised in that it includes torsional vibration damper according to any one of claim 1 to 9.
CN201480067746.2A 2013-12-09 2014-11-26 Swing type torsional vibration damper with improved filter efficiency Active CN105814336B (en)

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FR1362299 2013-12-09
FR1362299A FR3014519B1 (en) 2013-12-09 2013-12-09 TORSION DAMPING DEVICE WITH IMPROVED FILTRATION EFFICIENCY PENDULUM
PCT/FR2014/053048 WO2015086944A1 (en) 2013-12-09 2014-11-26 Pendulum torsion damping device with improved effectiveness of filtration

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FR3038682B1 (en) 2015-07-06 2017-07-28 Valeo Embrayages TORSION OSCILLATION DAMPING DEVICE
FR3052835B1 (en) * 2016-06-16 2018-06-08 Valeo Embrayages PENDULAR DAMPING DEVICE
FR3059749B1 (en) * 2016-12-06 2020-02-21 Valeo Embrayages PENDULUM DAMPING DEVICE
FR3064324B1 (en) * 2017-03-22 2021-06-25 Valeo Embrayages PENDULUM CUSHIONING DEVICE

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JP2004340170A (en) * 2003-05-13 2004-12-02 Nok Corp Damper
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EP3080479A1 (en) 2016-10-19
KR102341575B1 (en) 2021-12-22
CN105814336B (en) 2019-05-28

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