CN207630947U - Mass damper structure - Google Patents

Abstract

In order to weaken vibration of the vehicle body longitudinally or transversely caused by the rough running by the small displacement engine with a small amount of cylinder in direction, the utility model provides a kind of mass damper structure, which includes：Vibration damping quality body comprising battery tray and the battery being placed in the battery tray；Pivot structure is fixed on the body frame structure for automotive of vehicle, and the center of gravity of the pivot structure and vibration damping quality body is in same vertical plane, and the weight for carrying vibration damping quality body simultaneously enables vibration damping quality body to be pivoted around pivot structure；Elastic component, one end is fixed on body frame structure for automotive and its other end is fixed on battery tray, to provide the ability of elasticity pivot for vibration damping quality body.Using the mass damper structure, existing component in vehicle has been used, and has made it under the premise of realizing existing purpose, while having realized the auxiliary purpose of vibration damping.

Description

Mass damper structure

Technical field

The utility model is related to a kind of mass damper structures, more particularly to a kind of mass damper knot in vehicle Structure.

Background technology

Usually, manufacturer is when manufacturing vehicle, body construction and chassis structure can be made to it is as firm as possible, with Be resistant to road load input and engine ignition vibration input influence, both input can inevitably cause body construction and Chassis structure is vibrated with different patterns.

For road load input

A kind of basic vibration mode caused by road load is (as shown in fig. 1 around the longitudinal axis of car body The directions x) torsion, i.e. the directions z shown in Fig. 1 vibrate.In order to which this vibration is mitigated or eliminated, so that the operation of vehicle is more It is steady, possible solution it is to increase the floor panel structure of car body, but this inevitably equally significantly increases car body Weight, then increase vehicle operation energy consumption.And another solution for more saving weight is to use tuned matter Vibration-proof structure is measured to mitigate the vibration.Larger energy is needed due to implementing latter solution, rational way is This is realized using existing high quality parts in vehicle (for example, 12V batteries that existing weight is about 20kg in vehicle) Function.The purpose is to enable battery and its pallet carried out in a manner of the vibration reverse phase with lower section body construction slightly elasticity by The vertical direction (z as shown in Figure 1) movement of control.In order to keep this way more effective, quality should usually be subtracted Structure of shaking is placed on the maximum position of car body displacement, i.e., close to the preceding turning of vehicle or the position at rear turning.With solid square in Fig. 1 Frame a shows a relatively useful placement location for torsion damping, positioned at car body along lateral direction of car (Fig. 1 Shown in y) direction outside, i.e. vehicle body leads to the position for generating maximum displacement because of twisting vibration.

In order to make battery quality play tuned damping effect, which just must be flexibly installed so that be suspended at Battery and its pallet on resilient bushing can be vibrated with the mode of the local vibration reverse phase along the directions vehicle body z, be shaken to realize Dynamic decaying or even counteracting.The known arrangement structure for playing phase same-action is shown in Fig. 2 a, wherein battery tray 3 is at one end It is pivotably connected by pivot 1, and in the other end by the elastic twelve Earthly Branches of vertical bushing 2 (and other components for not giving label) Support.Fig. 2 b show the operation principle schematic diagram of arrangement shown in Fig. 2 a.

EP1561964 discloses a kind of improvement project for above-mentioned installation system, wherein utilizes the different battery of size The revamped design of M1 and M2 may benefit from this mass damper technology, as shown in Fig. 3.The matter of the two batteries M1 and M2 The heart is respectively with pivot 1 at a distance of l₁And l₂, therebetween at a distance of △ l.

Although this technology, which seems, solves the problems, such as above-mentioned vibration damping, it is not perfect, this is because known class The complicated battery tray of the installation of type is only used for the excitation in the vertical direction (z) of decaying/absorption, and (for example there is in twisting vibration for it Body structure corner).In other words, above structure can not be parallel to ground (direction (x) or transverse direction along longitudinal direction in excitation (y) direction) apply in the case of play damping effect.However, in these directions, the forced vibration of the typical engine of small displacement It is inevitably generated bad vibration input, to exacerbate body oscillating.

In addition, in the arrangement shown in such as Fig. 1 and Fig. 2 a, the use of vertical bushing 2 realizes following two kinds Function：It must support the major part of sizable battery quality, while must also provide the resonant frequency to Vehicular system The ability being tuned.The requirement that can be carried proposed to the vertical bushing is it is meant that the hardness of bushing necessarily is in relatively In high range, thus this significantly limits the ability being tuned to the resonant frequency of system by the elasticity of the bushing. It can be seen that, it is intended that there are certain contradictions between the two functions of being realized using bushing.The conflict of this two kinds requirements It graphically illustratively and more clearly illustrates in Fig. 4.

Shadow region A in Fig. 4 indicates the aimed hardness range for realizing vibration-damping function, and shadow region B is then indicated To realize the hardness range needed for the function of support battery.Wherein, being represented with left side square brackets in the B of shadow region Region C indicates the region of the excessive high hardness for realizing vibration-damping function, that is, cannot achieve the region of vibration-damping function.Thus may be used See, the hardness for the bushing that can meet above two functional requirement simultaneously should be at the upper limit between shadow region A and shadow region In firmness zone between the lower limit of domain B.Obviously, this region is excessively narrow, is significantly limited for meeting the requirements Vertical bushing selection.

For engine ignition vibration input

Engine ignition vibration can usually be decayed basically by the rubber mounting structure of engine.However, market today On, the number of cylinders in engine has the trend (such as being reduced to 3 or 2 from 6 or 4) of increasingly reduction, this trend makes Vibration problem is more notable, and all balance shafts 3 as shown in Figure 5 or attached must be applied on small displacement engine Y by being even up to Add the degree of the solution of crank arm 4 etc.

It is to use internal vibration damping machine to contribute to the alternative of decaying Vehicular vibration (such as Vehicular vibration from engine) Base system, commonly referred to as " water engineer base system ", compared with the rubber machine base system of standard, it is more to realize type The vibration of (range is wider) tunes and isolation.A kind of example is shown in Fig. 6, wherein realize by primary rubber machine base system 5 Damping effect using the damping effect realized by water engineer base system as supplement, the water engineer base system is by keeping liquid fast Speed flows through the aperture 8 and 9 of connection upper chamber 6 and lower chambers 7 to realize.

Although the above method has certain effect for the decaying of vehicle body twisting vibration, still in the presence of can not The shortcomings that overcoming.

Specifically, the method for addition engine counterweight, crank arm and water engineer base system is to substantially along vertical (z) The engine excitation in direction is effective in terms of being decayed, but is equally being parallel to ground (that is, the direction (x) or transverse direction along longitudinal direction (y) direction) apply external disturbance in the case of active force it is weaker.The use of balance shaft 3 because its additional teeth train there are due to lead It causes occupied installation space excessively huge, and causes production cost higher.Counter-jib (crank arm 4) on crank is typically Heavy, it thereby increases inertia and has hampered the quick response of the required air throttle of driver.

Utility model content

In order to contribute to weaken vehicle body along longitudinal direction the direction (x) or laterally the direction (y) by the small displacement with a small amount of cylinder Vibration caused by the rough running of engine, the utility model provide a kind of mass damper structure, the mass damper structure Including：

Vibration damping quality body；

Pivot structure is fixed on the body frame structure for automotive of vehicle, and the center of gravity of the pivot structure and vibration damping quality body is in same In vertical plane, weight for carrying vibration damping quality body simultaneously enables vibration damping quality body to be pivoted around pivot structure,

Elastic component, one end is fixed on body frame structure for automotive and its other end is fixed on vibration damping quality body, to be vibration damping matter It measures body and the ability that elasticity pivots is provided.

In one embodiment, elastic component is arranged in pairs in the both sides of pivot structure.

In another embodiment, elastic component is symmetrically arranged about pivot structure.

In another embodiment, pivot structure is connected to the lower surface of vibration damping quality body so that pivot structure is located at vibration damping The underface of the center of gravity of mass body.

In another embodiment, elastic component is erected at the lower section of vibration damping quality body.

In another embodiment, pivot structure is located at the surface of the center of gravity of vibration damping quality body, and the pivot structure is via pivot Pivoted arm is connected to vibration damping quality body.

In another embodiment, elastic component horizontally is arranged at the outside of vibration damping quality body

In another embodiment, pivotal arm includes four pivotal arms, and one end of each pivotal arm is connected to pivot structure, and The other end is connected to a corner vicinities of vibration damping quality body.

In another embodiment, pivot structure includes the pivot extended along the longitudinal direction or horizontal direction of vehicle.

In another embodiment, elastic component is spring or resilient bushing, and vibration damping quality body includes battery tray and is placed on Battery in the battery tray.

Weaken or even eliminate the vehicle body side (x) along longitudinal direction using mass damper structure provided by the utility model as a result, To or laterally the direction (y) the rough running by the small displacement engine with a small amount of cylinder caused by vibration.

Description of the drawings

Fig. 1 schematically shows a kind of vibration damping arrangement according to prior art；

Fig. 2 a show another vibration damping arrangement according to prior art；

Fig. 2 b show the operation principle schematic diagram of the arrangement of Fig. 2 a；

Fig. 3 shows another mass damper technology according to prior art；

Fig. 4 shows function-hardness figure of the vertical bushing used in arrangement shown in Fig. 1 and Fig. 2 a；

Fig. 5 is shown realizes vibration damping using balance shaft or crank arm is added on existing engine according to prior art Embodiment；

Fig. 6 shows the arrangement knot for realizing vibration damping using primary rubber system and Hydraulic Power System according to prior art Structure；

Fig. 7 shows the embodiment of mass damper structure according to the present utility model；

Fig. 8 shows Vibration Condition of the Power Component during vehicle is advanced；

Fig. 9 shows the working order in mass damper structure situation as shown in fig. 8 shown in Fig. 7；

Figure 10 shows the curve of two kinds of vibrations and its resultant vibration effect appeared in situation as shown in fig. 8； And

Figure 11 shows the alternate embodiments of mass damper structure according to the present utility model.

Specific implementation mode

Fig. 7 shows the embodiment of mass damper structure according to the present utility model.As shown in Figure 7, with drawing It holds up to be provided on the body frame structure for automotive (for example, being substantially in flat chassis structure 10) of the vehicle of source vibration problem and be separated from each other Two lugs 101 of certain distance.These lugs 101 can be integrally formed with chassis structure 10, can also be separately formed in and The both sides of chassis structure 10 are then fixed on by modes such as welding.Pivot structure 12 (for example, in the form of pivot) is pivotable Ground is connected to lug 101 so that the pivot structure 12 is between two lugs 101.The upper surface of the pivot structure 12 is big Cause flat, the pivot structure 12 can be connected via the upper surface and (be preferably centered setting) in the electricity of conventional batteries 16 as a result, The lower surface of pond pallet 14.This connection can be a kind of dismountable connection, can also be permanently connected.Pivot structure 12 with The connection of battery tray 14 so that battery tray 14 and battery 16 removably placed thereon can be used as one it is whole Body is pivoted around the pivot structure 12, and arbitrarily there is no any displacements between the two at it.Pivot structure 12, which has, is in water Pivot o in plane.In the example shown in Figure 7, pivot o substantially transversely arrange by the direction (y).Certainly, according in vehicle Specific damping requirements, pivot o can be used as selection be configured to along vehicle body longitudinal direction (x) direction extend.

In the example shown in Figure 7, the center of gravity M for the vibration damping quality body being made of battery tray 14 and battery 16 is located at pivot The surface of axis o and pivot o distances h.It should be noted that the vibration damping to be made of battery and battery tray here Mass body is illustrated as example.But other portions in vehicle in the actual implementation process, under applicable circumstances, may be selected Part constitutes vibration damping quality body described herein.Pivot o plays a supporting role to the weight of vibration damping quality body.In the pivot The both sides of o (along the directions x shown in fig. 7) are each provided at least one elastic component 18 respectively in the lower section of battery tray 14, To provide the ability of elasticity pivot for vibration damping quality body.The elastic component 18 keeps erectting, and one end is connected to chassis structure 10, the other end is connected to battery tray 14.The connection of elastic component 18 and chassis structure 10 and its can with the connection of battery tray 14 To be permanently connected (for example, being realized by welding etc.), can also be that one kind is dismountable connects (for example, by grab machine Structure etc. is realized).In an advantageous embodiment, it is each provided with an elastic component 18 in each corner of battery tray 4. In alternate embodiment, it only is each provided with an elastic component in the both sides of pivot o, each elastic component is by respectively along the direction of pivot o It is centrally positioned in below the side of battery tray 14.Unlike the prior art, elastic component 18 is not used to support vibration damping The quality of mass body, which increase ranges and easness that selection is carried out to elastic component.Meanwhile their stiffness characteristics can be made most Optimization, so that in range much bigger compared with prior art, the resonant frequency of body structure vibration is adjusted.

In the example shown in Figure 7, which can be spring or resilient bushing.The two spring bushings With pivot structure 12 at a distance of identical distance L.

The concrete operations situation of above-mentioned mass damper structure is as follows.

When the engine Y operatings of small displacement, engine Y is caused to generate the vibration around the rotation of its center of gravity, pattern such as Fig. 8 In R shown in.Since the powertrain assembly including engine Y is usually installed the end position (front end or rear end) in car body, because This these vibration is significant for body construction, this is mainly shown as that the label of body construction is in body construction The oscillation for being parallel to ground in the x-direction.

In response to excitation V, vehicle body structure is vibrated along the directions x, and this situation in the vehicle for taking one's seat It is clearly uncomfortable for occupant.

Using mass damper structure provided by the utility model, when with the vibration damping quality for pivoting battery When body affords excitation V, generated oscillating force causes battery 16 and battery tray 14 also around institute in pivot o such as Fig. 9 Oscillation as showing.The path of used mass damper structure and frequency are controlled by the spacing and rigidity of spring or bushing System, to be tuned to cycle of oscillation, to provide antiphase effect D shown in Fig. 9, and so that the vibration-proof structure Validity maximize.Figure 10 shows the schematic diagram of two kinds of vibrations and resultant vibration effect.In Fig. 10, fine line V is Indicate that the curve of body structure vibration, dotted line D are the curves for the vibration for indicating mass damper structure, heavy line indicates two kinds of vibrations The curve of substantially result after synthesis.

The vibration motion of spring pendulum-type mass damper structure forms tuned mass damper effect, this slows down or even base (being born by the body structure of vehicle) vibration from dynamical system (engine) is eliminated in sheet, and finally so that in vehicle Occupant can experience more comfortable seating experience.

In order to make the effect of damper maximize, the cycle of oscillation of spring pendulum-type mass bumper can be by with independent or phase In conjunction with mode change following parameters and be adjusted：

The mass M of mass bumper (battery+pallet)

Spacing h between pivot structure and the center of gravity of mass bumper

The distance between pivot structure and two-side elastic part L

The buoyancy effect of bushing/spring.

Figure 11 shows a kind of alternate embodiments of mass damper structure according to the present utility model.Shown in Figure 11 Mass damper structure and structure shown in fig. 7 the difference is that, pivot o is not on the lower section of battery tray 14, and It is to be positioned above.It is realized on this body frame structure for automotive by the top that lug 101 is arranged in vibration damping quality body.It is preferred that Ground quantity is that one end of each in four and the pivotal arm of equal length is connected to the pivot structure 12, and the other end is distinguished It is fixed on a corner vicinities of battery tray 14 so that when static, pivot structure 12 is located at the center of gravity of vibration damping quality body Surface.Certainly, the pivotal arm of other quantity can be used.Pivot o supports battery 16 and battery tray via pivotal arm 20 as a result, 14 weight.At least two elastic components 18 and the lower section for being not disposed on battery chassis 14, but it is horizontally disposed at battery chassis 14 outside.One end of these elastic components 18 is connected to the outside of battery tray 14, and the other end is connected to positioned at battery tray 14 Lower section substantially u-shaped body frame structure for automotive side wall inside.Above-mentioned connection can be permanently connected, can also be detachable Connection.

When vibration damping quality body according to shown in Figure 11 four-headed arrow swing when, can to elastic component 18 fully and individually into Row tuning is to be suitable for required target frequency.

Some other alternate embodiments also may be present, wherein when triggering ABS or when engagement " movement " drive mode When, battery is held in place and is meeted the requirements.Therefore, in order to which the rigidity to elastic component makes some active controls, to incite somebody to action These elastic components, which lock electromagnet in place and will be, to meet the requirements.

It can be worked in a horizontal plane (along the directions x or y) according to mass damper structure provided by the utility model, and And be designed to mitigate the vibration from engine sway mode in body structure, this will significantly improve the shape of body vibrations Condition improves the comfort of passenger riding.

Mass damper structure provided by the utility model is without using bulky and expensive balance shaft, without using Heavy crank arm only used existing component in vehicle, and make it under the premise of realizing existing purpose, while real The auxiliary purpose of vibration damping is showed.

Mass damper structure provided by the utility model is without addition water engineer base system, to simplify required reality The damping technology applied.

Furthermore mass damper structure provided by the utility model is entirely passive type, any without being provided with to it Power, without the existing electrical system of vehicle is coupled with, to ensure its operation, to realize the letter of installation and combination Dan Hua.

The embodiment gone out given in the utility model is only schematical, and the set-up mode of component therein is being applicable in In the case of can be substituted for each other.For example, in embodiment shown in the figure 7, elastic component equally can be according to shown in fig. 11 Mode be horizontally set.

Claims (10)

1. a kind of mass damper structure, the mass damper structure is used in vehicle, which is characterized in that the mass damper structure Including：

Vibration damping quality body；

Pivot structure, the pivot structure are fixed on the body frame structure for automotive of the vehicle, the pivot structure and the vibration damping quality The center of gravity of body is in same vertical plane, and the weight for carrying the vibration damping quality body simultaneously enables the vibration damping quality body It is pivoted around the pivot structure,

The body frame structure for automotive is fixed in one end of elastic component, the elastic component, and the other end of the elastic component is fixed on institute Vibration damping quality body is stated, to provide the ability of elasticity pivot for the vibration damping quality body.

2. mass damper structure according to claim 1, which is characterized in that the elastic component is arranged in pairs in the pivot The both sides of rotation structure.

3. mass damper structure according to claim 2, which is characterized in that the elastic component is about the pivot structure pair Claim ground setting.

4. the mass damper structure according to any one of Claim 1-3, which is characterized in that the pivot structure connects It is connected to the lower surface of the vibration damping quality so that the pivot structure is located at the underface of the center of gravity of the vibration damping quality body.

5. mass damper structure according to claim 4, which is characterized in that the elastic component is erected at the vibration damping quality The lower section of body.

6. the mass damper structure according to any one of Claim 1-3, which is characterized in that the pivot structure position In the surface of the center of gravity of the vibration damping quality body, the pivot structure is connected to the vibration damping quality body via pivotal arm.

7. mass damper structure according to claim 6, which is characterized in that the elastic component horizontally is arranged at described subtract Shake the outside of mass body.

8. mass damper structure according to claim 6, which is characterized in that the pivotal arm includes four pivotal arms, often One end of a pivotal arm is connected to the pivot structure, and the other end is connected to a corner vicinities of the vibration damping quality body.

9. the mass damper structure according to any one of Claim 1-3, which is characterized in that the pivot structure packet Include the pivot of longitudinal direction or the horizontal direction extension along vehicle.

10. the mass damper structure according to any one of Claim 1-3, which is characterized in that the elastic component is bullet Spring or resilient bushing, the vibration damping quality body include battery tray and the battery that is placed in the battery tray.