CN100429085C - Elastic wheel and method of manufacturing the same - Google Patents
Elastic wheel and method of manufacturing the same Download PDFInfo
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- CN100429085C CN100429085C CNB200580004529XA CN200580004529A CN100429085C CN 100429085 C CN100429085 C CN 100429085C CN B200580004529X A CNB200580004529X A CN B200580004529XA CN 200580004529 A CN200580004529 A CN 200580004529A CN 100429085 C CN100429085 C CN 100429085C
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Abstract
An elastic wheel comprises a rim for mounting a tire, a disk to be fixed to an axle, and a connecting apparatus for connecting elastically between the rim and disk, the apparatus comprising a pair of axially spaced internal flanges each provided on an inner circumference side of the rim and extending circumferentially, an external flange provided on a radially outer portion of the disk, the external flange disposed in a space between the internal flanges with an axial gap on its both sides and extending circumferentially, a pair of rubber dampers each disposed in the axial gap and connecting between the internal and external flanges, wherein each internal flange is provided on its axially inner side with a first groove, the external flange is provided on its both sides with a second groove so as to face each first groove, axial ends of each damper are inserted into the first and second grooves, and a radial gap is provided between the external flange and the inner circumference side of the rim in the space.
Description
Technical field
The present invention relates to improve the elastic wheel of ride comfort and noise abatement performance, and relate to the method for making such elastic wheel.
Background technology
For ride comfort and the quiet degree that improves vehicle, a kind of automobile-used elastic wheel is for example proposed: Japanese documentation 2003-104001 in the patent documentation below.
As shown in figure 21, this elastic wheel comprises the wheel rim " a " that is used for support tire, will be fixed to wheel disc b and the rubber cushion assembly c that is used to be connected wheel rim " a " and wheel disc b that is made by elastic caoutchouc on the wheel shaft.Slit d is arranged between the interior all sides and wheel disc b radially outer of wheel rim " a ".Thereby, be applied to the shear deformation that the radial weight on the elastic wheel changes by rubber cushion assembly c and absorb.Thereby for ground-surface small vibration input, elastic wheel shows high cushioning effect, and ride comfort and noise abatement performance significantly improve.When axial load is applied on the elastic wheel, a part of pressurized of rubber cushion assembly c and being out of shape, thus rigidity remains on high level and road-holding property is kept.
Yet according to traditional elastic wheel, rubber cushion assembly c is adhered fixed wheel disc b and the mounting bracket e that is wholely set on wheel rim " a " by sulfuration.Thereby sulfuration adheres to needs more time and manpower, and has the problem that manufacturing cost raises and capacity rating descends.
Summary of the invention
Main purpose of the present invention provides a kind of elastic wheel, its need not sulfuration adhere to can be between wheel rim and wheel disc fixing rubber cushion assembly.Another object of the present invention provides a kind of elastic wheel, and it can keep road-holding property well, improves ride comfort and noise abatement performance simultaneously.Another object of the present invention provides a kind of method of making elastic wheel, and this method can cost-cutting and increaseed productivity.
According to an aspect of the present invention, elastic wheel comprises:
Be used to install the wheel rim of tire, it extends along circumferential,
Be fixed on the wheel shaft wheel disc and
Be used for flexibly being connected the connecting device between this wheel rim and the wheel disc,
This connecting device comprises
A pair of axially spaced portion inner flange, each portion inner flange are arranged on interior all sides of this wheel rim and radially inwardly outstanding from this, and this portion inner flange upwards extends in week,
Be arranged on the outside bead of this wheel disc radially outer, this outside bead is arranged in the space between this portion inner flange and in its both sides and is provided with axial slits, and should the outside bead upwards extend in week,
A pair of rubber cushion assembly, each rubber cushion assembly are arranged in the axial slits and are connected between the inside and outside bead, wherein
The axial inboard of each portion inner flange is provided with at least one at upwardly extending first groove of week,
The both sides of this outside bead respectively are provided with at least one second groove, and this second groove is upwards extending so that towards first groove of each portion inner flange in week,
An axial end of each rubber cushion assembly is inserted in first groove of this portion inner flange, and the other end is inserted in second groove of this outside bead, and
Interior all sides of wheel rim and should the outside bead between, in described space, be provided with radial gap.
According to the elastic wheel with said structure, rubber cushion assembly is fixed to tightly by friction force in the groove of bead of wheel disc and wheel rim.Thereby, do not need as conventional art, to use sulfuration to adhere to.According to the manufacture method of elastic wheel, the rubber cushion assembly of being made by fwd polysulphide rubbers elastomeric material is arranged in first and second grooves, in the axial direction pressurized and being supported.Thereby rubber cushion assembly is fixed firmly on wheel rim and the wheel disc by big friction force, and then does not need to vulcanize to adhere to.Thereby manufacturing method according to the invention can provide a kind of actv. elastic wheel manufacture method that does not need to vulcanize adhesion.
In addition, according to a further aspect in the invention, the method of making elastic wheel comprises: prepare the wheel rim main part, this wheel rim main part has second portion inner flange that is formed at first portion inner flange on its interior all side in advance securely and was attached to all sides in this wheel rim afterwards separately; Prepare the rubber cushion assembly of a pair of prior sulfuration; Preparation is provided with the wheel disc of outside bead, and this outside bead has second groove; Pre-assy wheel rim, rubber cushion assembly and second bead make the axial end of each rubber cushion assembly be inserted into this first groove and second groove; The rubber cushion assembly of compression clip between this first bead and second bead in the axial direction by promoting second portion inner flange towards this first portion inner flange; And the interior all sides that when keeping this rubber cushion assembly of compression, this second portion inner flange are welded to this wheel rim.
Description of drawings
Fig. 1 shows the section drawing of the embodiment of elastic wheel of the present invention;
Fig. 2 is its partial enlarged view;
Fig. 3 is the exploded perspective view of Fig. 2;
Fig. 4 shows the part sectional view of first another embodiment of groove;
Fig. 5 (A) is that Fig. 5 (B) has the groove of circumferentially spaced and the circumferential section drawing of embodiment of rubber cushion assembly along wherein groove and rubber cushion assembly are at the section drawing of circumferentially cutting open of continuous embodiment that makes progress in week;
Fig. 6 is the exploded perspective view of the part of Fig. 5 (B);
Fig. 7 shows the block diagram of another embodiment of rubber cushion assembly;
Fig. 8 shows the section drawing of Fig. 7;
Fig. 9 (A) is the schematic side elevation that is used to explain the rubber cushion assembly manufacture method, and Fig. 9 (B) is the schematic side elevation that is used to explain another rubber cushion assembly manufacture method;
Figure 10 (A) is the section drawing of the function when being used to explain the elastic wheel straight-line travelling, and Figure 10 (B) is the enlarged view of X part;
Figure 11 (A) is the section drawing that is used to explain the function when elastic wheel is turned, and Figure 11 (B) is the enlarged view of X part;
Figure 12 (A) and Figure 12 (B) are the block diagram that another embodiment of rubber cushion assembly is shown;
Figure 13 (A) and Figure 13 (B) are the block diagram that another embodiment of rubber cushion assembly is shown;
Figure 14 is the section drawing that another embodiment of rubber cushion assembly is shown;
Figure 15 is the partial section according to the elastic wheel of another embodiment;
Figure 16 is the partial enlarged view of Figure 15;
The decomposition view of Figure 17 Figure 16;
Figure 18 (A) shows the section drawing of elastic wheel pre-assembled state, and Figure 18 (B) shows the section drawing of the rubber cushion assembly of pressurized;
Figure 19 shows by the chart to the measured vehicle frequency noise analysis result of the actual vehicle operation test of embodiment 1 and traditional embodiment;
Figure 20 shows by the chart to the measured vehicle frequency noise analysis result of the actual vehicle operation test of embodiment 7 and traditional embodiment; With
Figure 21 is the partial section of traditional elastic wheel.
The specific embodiment
Describe according to the embodiment of the present invention below with reference to accompanying drawings.
Elastic wheel 1 shown in Fig. 1 comprises that wheel rim 3, the wheel disc 5 that is fixed to wheel shaft 4 and the elasticity of the air-inflation tyre (after this abbreviating " tire " as) 2 that supports automobile are connected wheel rim 3 and wheel disc 5 connecting device 7 each other.
The wheel rim bead 3b that wheel rim 3 comprises a pair of wheel rim seat 3a that is located the bead part of tire 2 on it, extend radially outwardly from each wheel rim seat 3a axial outer end and have minimum outer diameter and be arranged on the depression besd sed of rim 3c of portion between the wheel rim seat 3a.Wheel rim 3 is annular solids, and its shape of cross section upwards extended continuously in week.In this embodiment, the 3c of besd sed of rim portion is darker relatively, but the not restriction especially of its shape.
The center of wheel hub holder 5a is provided with centre hole 14, and protrusion 12 is inserted in the centre hole 14, and bolt hole 15 is provided with around centre hole 14, and boss bolt 13 is inserted in the bolt hole 15.
In this embodiment, wheel rim 3 and wheel disc 5 are made by nondistensible metal basically, for example steel, aluminum alloy and magnesium alloy.
As shown in Figure 2, connecting device 7 comprises: a pair of axially spaced portion inner flange 20, and its interior all side from wheel rim 3 is radially inwardly outstanding; Be arranged on the outside bead 21 of the radially outer of wheel disc 5, it places all an axial slits D1 in the space between this portion inner flange 20 and in its both sides, and upwards extends in week; With a pair of rubber cushion assembly 6, it is made and is placed by rubber elastic material in this axial slits D1.
Each portion inner flange 20 is the protrusions that inwardly point to, and its interior all side from wheel rim 3 is radially inwardly outstanding.Each portion inner flange 20 has axial inboard 20S, and this axially inboard place is provided with at upwardly extending first groove 22 of week.
In this embodiment, one of them portion inner flange---preferably is positioned at the portion inner flange 20A of vehicle outside---and is arranged so that portion inner flange 20A and can be attached to wheel rim 3 and pull down from wheel rim 3.More specifically, such portion inner flange 20A comprise from wheel rim 3 radially inwardly outstanding a bit of height base portion 20a and be installed in projected edge plate 20b on the base portion 20a by screw thread equipment J in removable mode down.Thus, the assembly manipulation of elastic wheel 1 can carry out effectively, and this has simplified attended operation---for example replacing of rubber cushion assembly 6.Screw thread equipment J is bolt in this embodiment, but screw thread equipment J is not limited to bolt.
Axial slits D1 is arranged in the space between the portion inner flange 20, the both sides of outside bead 21.And radial gap D2 is arranged between the interior all sides and outside bead 21 of the wheel rim 3 in this space.
Outside bead 21A is provided with a pair of second groove 23 in its both sides, each second groove is circumferentially extending so that towards each first groove.
Outside bead 21 is provided with second groove 23 at its both sides 21S, this second groove circumferentially extending towards first groove 22 of each portion inner flange 20.
In this embodiment, each rubber cushion assembly 6 all has rectangular cross section and is made by the rubber elastic material with constant thickness.Rubber cushion assembly 6 is arranged to connect slit D1.More specifically, the rubber cushion assembly 6 two ends 6E on axially is inserted into respectively in a pair of first groove 22 and second groove 23, and touches the surface of groove tightly.In the D1 of slit, outside face and inside face that rubber cushion assembly 6 footpaths make progress are not subjected to from exterior constraint.
According to such elastic wheel 1, the radial weight between wheel rim 3 and the wheel disc 5 changes and can be absorbed by the shear deformation of rubber cushion assembly 6.For the small vibration input, shown splendid buffering effect, and frame takes advantage of traveling comfort and noise abatement performance significantly to promote.
As shown in Figure 3, elastic wheel 1 according to this embodiment, rubber cushion assembly 6, the wheel disc 5 with outside bead 21 and another rubber cushion assembly 6 are inserted into another portion inner flange 20B of wheel rim 3 (this portion inner flange 20B is positioned at vehicle interior side in this embodiment) in turn from vehicle outside, and they are temporarily assembled.In this stage, rubber cushion assembly 6 is prevulcanizations.After this, projected edge plate 20b is fixed on the base portion 20a of wheel rim 3 by screw thread equipment J.Thus, elastic wheel 1 is able to make easily and effectively.
According to this method of attachment of rubber cushion assembly 6, sulfuration before this adheres to required time and manpower and is reduced, and manufacturing cost can reduce, and then capacity rating can improve.
When having big radial vibration input, the outer radial periphery side of outside bead 21 and the interior perimeter surface of wheel rim 3 can directly contact with each other, and then ride comfort and noise abatement performance can reduce in some cases.Thereby, according to the elastic wheel 1 of this embodiment, in interior all sides of the outer circumferential side of outside bead 21 and wheel rim 3 one of them is provided with padded coaming 24 at least, with the impact in when contact buffering.In this embodiment, padded coaming 24 is arranged on interior all sides of wheel rim 3.Between padded coaming 24 and another surface (being outer circumferential side in this embodiment), guarantee radial gap D2.
In elastic wheel 1, a part of pressurized of rubber cushion assembly 6 is also owing to tire axial load is out of shape, thereby the rigidity of tire axial can remain on high level.Thereby even use rubber cushion assembly 6, the deterioration of road-holding property is also suppressed.
In order to guarantee the friction force between rubber cushion assembly 6 and wheel rim 3 or the wheel disc 5 fully, preferably, each groove 22 and 23 depth H are not less than 3mm, more preferably are not less than 5mm and more preferably are not less than 8mm.
In order to strengthen road-holding property, preferably, first groove 22, second groove 23 and rubber cushion assembly 6 contact with each other under high pressure.For example as shown in Figure 4, preferably, the groove width t of each groove is less than the thickness T of rubber cushion assembly 6 in first and second grooves 22 and 23.In this embodiment, groove width t reduces smoothly towards channel bottom, thereby groove 22 and 23 is convergents.Because touch rubber cushion assembly 6 and produce high friction force under high pressure, such first and second grooves 22 and 23 are preferred.
Preferably, among the D1 of slit, the rubber thickness T of rubber cushion assembly 6 is not less than 8mm, preferably is not less than 10mm, and its upper limit preferably is no more than 30mm.As rubber thickness T during less than 8mm, when axial load was applied on the rubber cushion assembly 6, this rubber cushion assembly can crooked, distortion.Otherwise if thickness T surpasses 30mm, then the weight of elastic wheel 1 or vertical rigidity (radial rigidity) are tended to increase.
Preferably, slit D1 is positioned at 50～200% the scope of rubber thickness T.If slit D1 less than 50% of rubber thickness T, exists the radially deflection of rubber cushion assembly 6 to be suppressed to the possibility of a little value.If slit D1 surpasses 200% of rubber thickness T, when applying axial load easily in rubber cushion assembly 6 flexing takes place, perhaps its weight is tended to increase.
For assimilation effect and the durability that strengthens vibration, preferably, the rubber hardness scope of rubber cushion assembly 6 is that 10～50 degree (hardness meter A hardness), complex elastic-modulus scope are that 1.0～5.0MPa and loss tangent (tg δ) scope are 0.05～0.2.The value of complex modulus of elasticity E and loss tangent (tg δ) is recorded under the condition below by the visoelasticity spectrometer: 70 degrees centigrade of temperature, incipient extension 10%, dynamic distortion positive and negative 1% and frequency 10Hz.
Though be used for the not restriction especially of rubber elastic material of rubber cushion assembly 6, yet the preferred example of this rubber elastic material is: diene rubber, for example nitrile rubber (NBR), buna-S (SBR), butadiene rubber (BR), natural rubber (NR) and isoprene rubber (IR); And non-diene rubber, for example butyl rubber (IIR) and ethylene propylene rubber (EPDM).For example additives such as rubber stiffener, vulcanizator, Accelerant, paraffin and/or antioxidant suitably mix desirably.
As for padded coaming 24, preferably use the elastomeric material have low elasticity and high attenuation effect, to have little rubber hardness, complex elastic-modulus E and loss tangent.
In addition, in order to make connecting device 7 transfer torque reliably between wheel shaft 4 and wheel rim 3, preferably, prevent between portion inner flange 20 and outside bead 21, big slip upwards to occur in week.For the elastic wheel 1 of this embodiment, also touch flute surfaces tightly because rubber cushion assembly 6 is inserted in groove 22 and 23, thereby applied big friction force betwixt.Thereby, shown in Fig. 5 (A),, prevented that also portion inner flange 20 and outside bead 21 from big slip upwards occurring in week even rubber cushion assembly 6 and groove 22,23 upwards are continuous in week.
In order upwards to prevent big slip in week more reliably,,, can use along the groove section 26 of a plurality of circumferentially spaceds that circumferentially are provided with for each groove in first and second grooves 23 as Fig. 5 (B) and shown in Figure 6.
In addition, for rubber cushion assembly 6, can use a plurality of damper section 6A that are coupled to respectively in the groove 26.
In having the elastic wheel of this spline structure, the partition 27 between the groove section 26 can be used as stop part, the motion of its restriction damper section 6A on circumferentially.Thereby, according to such embodiment, because the synergy of partition 27 and friction force can prevent from big slip upwards to occur in week between inside and outside bead 20 and 21 more reliably.
In this embodiment, preferably, the number (externally bead 21 each side cut apart number) of cutting apart of damper section 6A is in 8～20 scopes.The central angle alpha of the relative tire axle of circumferential lengths of damper section 6A preferably is in 50～80% the scope of 360/n (" n " is the number of damper section).Fig. 5 illustrates the situation of n=8 and α=30 degree.
As shown in Figure 7, rubber cushion assembly 6 can be made by composite material, for example comprises rubber section 6a and cord 6b.In the rubber cushion assembly 6 according to present embodiment, each cord 6b circumferentially is embedded among the rubber section 6a along wheel rim 3.Such rubber cushion assembly 6 can comprise that the carcass plies duplexer 10 of a plurality of stacked carcass pliess 9 forms by sulfuration, as shown in Figure 8.
Each carcass plies 9 all has plates, and comprises the unvulcanized rubber 6a of a plurality of cord 6b that are set parallel to each other and covering cord 6b.Cord duplexer 10 can form by screw winding carcass plies 9 continuously, and shown in Fig. 9 (A), perhaps a plurality of ring-type carcass pliess 9 can be stacked one by one, shown in Fig. 9 (B).Can adopt the array configuration of those modes that Fig. 9 (A) and 9 (B) illustrate.
Schematic sectional view when Figure 10 (A) is mounted in elastic wheel 1 straight-line travelling on the vehicle, Figure 10 (B) is the enlarged view of X part among Figure 10 (A).Wheel rim 3 lifts with respect to wheel disc 5 relatively by the ground-surface antagonistic force.Thus, rubber cushion assembly 6 is sheared between portion inner flange 20 and outside bead 21 and is out of shape.By the shear deformation of rubber cushion assembly 6 according to road surface reaction, the shock and vibration that are delivered to car body are reduced, and then ride comfort and quiet degree are improved when travelling, as mentioned above.
The shear deformation of rubber cushion assembly 6 is the distortion that do not produce volume change.Thereby because the rubber section 6a deformable of rubber cushion assembly 6 and can not be subjected to cord 6b and stop, elastic wheel 1 depends on the elasticity of rubber 6a with respect to the rigidity (being vertical rigidity) of radial weight, and this rigidity is little.
Schematic sectional view when Figure 11 (A) is mounted in elastic wheel 1 on the vehicle and turns, Figure 11 (B) is the enlarged view of X part among Figure 11 (A).If increase from ground-surface side force F, wheel rim 3 moves axially relatively with respect to wheel disc 5.The position maximum of this amount of movement above ground contact portion.Between the portion inner flange 20 and outside bead 21 of this position, tensile deformation vertically in rubber cushion assembly 6i, occurs, and compressive deformation vertically in rubber cushion assembly 6o, occurs.The compressive force and the tensile force that produce distortion like this are to make rubber cushion assembly 6 produce the power of volume change.Yet because originally rubber section 6a does not produce volume change, radially inner side is attempted to expand or contact with not affined surperficial 6o in the outside and 6i.At this moment, be inserted into the distortion of the cord 6b compressing rubber section 6a of rubber section 6a, thereby the rigidity of rubber cushion assembly 6 increases significantly.Thereby according to the elastic wheel 1 of present embodiment, vertically rigidity reduces, and lateral rigidity increases, and vibration and noise level can reduce, and can not make that road-holding property reduces significantly.
If the thickness of cord 6b is restriction especially, but if thickness is too little, lateral rigidity is easy to diminish, and too thick, is easy to step-down with the adhesiveness of rubber section 6a.Under the situation of organic fiber cord, preferred thickness is about 800～2000 dtexs (dtex), under the situation of inorganic fibre cord, and steel cord for example, preferably its external diameter is about 0.5～1.0mm.
Shown in Figure 12 (A), rubber cushion assembly 6 can comprise the cord 6b2 that extends vertically.In the embodiment that Figure 12 (A) illustrates, rubber cushion assembly 6 comprises parallel cord 6b1 that circumferentially extend on the edge and the parallel cord 6b2 that extends vertically.In this embodiment, cord 6b1 and 6b2 show right angle intersection each other greatly.The cord 6b2 of Yan Shening can be used for resisting axial compressive force and the tensile force that produces and apply when turning vertically.Thereby the lateral rigidity of rubber cushion assembly 6 further increases, and road-holding property further improves.All cord 6b of rubber cushion assembly 6 can be provided with vertically.
In the embodiment that Figure 12 (B) illustrates, rubber cushion assembly 6 comprises parallel cord 6b3 and the 6b4 with respect to peripheral, oblique.Especially, in this embodiment, rubber cushion assembly 6 comprises: be not less than 10 degree and be not more than the 80 parallel cord 6b3 that spend with respect to circumferential tilt angle theta 1; Be not less than 10 degree and be not more than the 80 parallel cord 6b4 that spend with respect to circumferential tilt angle theta 2, thereby intersect with cord 6b3.Preferably, the intersecting angle of cord 6b3 and 6b4 (θ 1+ θ 2) is spent greater than 0 and is not more than 90 and spends.Rubber cushion assembly 6 has high circumferential rigidity.Thereby, be similar to the embodiment shown in Fig. 8, when vehicular drive or braking and when making that high pulling torque is applied to rubber cushion assembly 6, can suppress between wheel rim 3 and the wheel disc 5 in the big slip that makes progress in week.Thus, the response that can improve vehicle launch or stop.
In Figure 13 (A) and this embodiment of (B) illustrating, rubber cushion assembly 6 comprises the cord 6b5 (it also means the direction of the thickness T of rubber cushion assembly) that radially extends.In this rubber cushion assembly 6, radially the cord 6b5 of Yan Shening can form by folding cord carcass plies, and wherein this cord carcass plies comprises along circumferential Y extension and crooked continuously diametrically cord 6b.In addition, shown in Figure 13 (B), comprise that radially the rectangle carcass plies of the cord 6b5 that extends is can be on circumferential Y stacked and form.
As shown in the section drawing of Figure 14, rubber cushion assembly 6 can form and make a plurality of cord 6b only be provided with near the surface region layer be not tied surperficial 6o and 6i, and part therebetween can form and has only rubber section 6a.In this case, owing to be not tied surperficial 6o and 6i have prevented distortion effectively, just make the lateral rigidity of rubber cushion assembly 6 be increased by a small amount of cord.
Figure 15 and 16 is part sectional views of the elastic wheel 1 of another embodiment according to the present invention.Wheel rim 3 has the structure roughly the same with aforementioned embodiments, but in this embodiment, 3c of besd sed of rim portion and the 3d of tube portion are arranged between the wheel rim seat 3a shoulder to shoulder.The external diameter of the 3d of tube portion is greater than the external diameter of the 3c of besd sed of rim portion and less than the external diameter of wheel rim seat 3a, and tube portion 3 extends vertically.The 3c of besd sed of rim portion is near one of them wheel rim seat 3a.The 3d of tube portion compares wideer in the axial direction with the 3c of besd sed of rim portion.
In this embodiment, portion inner flange 20 comprises and is integrally formed at the first portion inner flange 20C on the wheel rim 3 in advance and was fixed to the second portion inner flange 20D on the wheel rim 3 afterwards by welding.
In the axial direction, the first portion inner flange 20C is arranged on the 3d of the tube portion side of the 3c of besd sed of rim portion.The generation type of the first portion inner flange 20C is restriction especially not, but preferably, the first portion inner flange 20C is by casting or forging and pressing are prior and wheel rim 3 is integrally formed.
The second portion inner flange 20D forms tubular shape, and its outer radial periphery face 20Do is slightly less than the inside diameter D 1 of the 3d of tube portion of wheel rim 3.Thereby before the second portion inner flange 20D was welded on the wheel rim 3, the second portion inner flange 20D can be along interior all side shafts of the 3d of tube portion to slip.The second portion inner flange 20D can be coupled to interior all sides of a 3d of portion from one of them bead 3b (be arranged on the 3c of besd sed of rim portion than on the distally).Roughly the same in other structure and the aforementioned embodiments.
In the elastic wheel 1 of this embodiment, rubber cushion assembly 6 is set to this rubber cushion assembly 6 and is compressed between first groove 22 and second groove 23.Remaining on rubber cushion assembly 6 in this compressive state contacts with 23 flute surfaces with groove 22 under high pressure.Thus, obtain high friction force on the mating surfaces of portion inner flange 20 and rubber cushion assembly 6 and on the mating surfaces of rubber cushion assembly 6 and outside bead 21, and can suppress the big slip that making progress in week between two members.And, in the elastic wheel 1 of this embodiment, do not need polysulphide rubbers damper 6 attached with wheel rim 3 or wheel disc 5.Thereby elastic wheel 1 can be made on common wheel manufacturing line, and capacity rating significantly promotes.
Next will explain the embodiment of manufacture method of the elastic wheel 1 of this embodiment.As shown in figure 17, be ready to wheel rim 3.This first portion inner flange 20C to portion inner flange 20 is integrally formed by welding or forging and pressing interior all sides prior and wheel rim 3, and the second portion inner flange 20D is prepared as and wheel rim 3 separated components.Portion inner flange 20C and 20D have been provided with first groove 22.Wheel rim 3 is fixed by the anchor clamps (not shown) and is not removable.
As shown in figure 17, be ready to rubber cushion assembly 6 and wheel disc 5.Each rubber cushion assembly 6 is prepared as annular solid, and in this embodiment, this annular solid vulcanizes in another process in advance.Wheel disc 5 has been provided with the outside bead 21 with second groove 23.
Shown in Figure 17 and 18 (A), the outside bead 21 of one of them rubber cushion assembly 6, wheel disc 5, another rubber cushion assembly 6 and second portion inner flange 20 are inserted from the first portion inner flange 20C of an axial side towards wheel rim 3 in turn, make these elements align.Thus, the two ends 6E of rubber cushion assembly 6 is supported between first groove 22 and second groove 23, and wheel rim 3, rubber cushion assembly 6, wheel disc 5 and the second portion inner flange 20D are temporarily assembled.When temporarily assembling, do not need these members are set in the normal order, and rubber cushion assembly 6 etc. can for example temporarily be assembled to offside second groove 23 of outside bead 21.
Then, shown in Figure 18 (B), push the second portion inner flange 20D to first portion inner flange 20C vertically.Thus, carried out the step of compressing rubber damper 6.In this step, but working pressure machine etc.In the compression step of rubber cushion assembly 6, rubber cushion assembly 6 expands and distortion makes its thickness increase.Thus, the surface touches the surface of groove 22 and 23 tightly in enough wide scope, and contact pressure therebetween increases.In addition, another contact portion between contact portion between rubber cushion assembly 6 and the wheel rim 3 and rubber cushion assembly 6 and the wheel disc 5 all obtains high friction force, and can prevent in the slip that makes progress in week.
Be used for the not restriction especially of pressure Fa of compressing rubber damper 6, but if pressure Fa is too small, friction force increase between rubber cushion assembly 6 and groove 22 and 23 is abundant inadequately, and has following trend: the power that is coupled therebetween reduces, produces slides and the road-holding property deterioration.Have been found that road-holding property and noise abatement performance are increased if pressure Fa is in certain level.Yet, if pressure Fa is too high, have following possibility: compress distortion and reduce and the reduction of noise abatement performance with the shock absorption that for example crack equivalent damage is easy to generation, rubber cushion assembly 6 in rubber cushion assembly 6.By this viewpoint, preferably, the second portion inner flange 20D pushes the used pressure Fa of the first portion inner flange 20C vertically to and is not less than 10kN and more preferably is not less than 15kN.The upper limit of this pressure Fa preferably is not more than 30kN and more preferably is not more than 25kN.
Then, keep the compressive state of rubber cushion assembly 6, in this state, the second portion inner flange 20D is welded to interior all sides of wheel rim 3.In this embodiment, as shown in figure 16, carry out welding operation, make welded metal along on the corner part 14 that circumferentially is arranged between the interior all sides that are formed at the wheel rim 3 and the second portion inner flange 20D.
According to the elastic wheel of being made by above-mentioned manufacture method 1, the rubber cushion assembly of being made by rubber elastic material 6 does not use the sulfuration adhesion and is assembled between wheel rim 3 and the wheel disc 5.Thereby elastic wheel 1 can be made with tradition, common wheel manufacturing line, and capacity rating is high.
Although described particularly preferred embodiment of the present invention in detail, concrete structure of the present invention is not restricted to this embodiment, and the present invention can carry out various modifications within the specific limits and implemented and can not depart from the present invention.
Contrast test
Be of a size of 16 * 7.0-JJ, structure elastic wheel (embodiment 1) as shown in Figure 1 with reference to the manufacturing of specification shown in the table 1, and under the actual vehicle driving conditions, test road-holding property and noise abatement performance based on following reference.In the elastic wheel of these embodiment, rubber cushion assembly is only made by rubber.In order to contrast, also tested the aluminum vehicle wheel (traditional embodiment) that does not have rubber cushion assembly.Test method is as follows.
Road-holding property
The interior pressure that can obtain by the commercial channel be that the tire (225/50R16) of 230kPa is installed in testing vehicle (passenger vehicle on all test wheels 2000cc), and carries out test drives having on the Tire testing road of dried asphalt road.In test drives, the characteristic that relates to and handle wheel response, rigidity sensation, grabs ground etc. is assessed by the sensation of chaufeur.The result illustrates with index, and wherein traditional embodiment is expressed as 100.Numerical value is high more, and ecbatic is good more.
The noise abatement performance
Use same vehicle in test noise abatement performance under the 60km/h speed, on pavement noise test road, and overall noise record in the position corresponding to chaufeur auris dextra place.Test result is illustrated among table 1 and Figure 19.
Table 1
| Embodiment 1 | Tradition embodiment | |
| The gash depth H (manufacture method) that rubber cushion assembly rubber hardness (degree) complex elastic-modulus E (Mpa) loss tangent (tg α) thickness T (mm) is cut apart several n circumferential width α (degree) distance D 1 (mm) distance D 2 (mm) groove is road-holding property noise abatement performance (mm) | 30 3 0.1 10 8 30 20 95 100 Figure 19 | Lack---------100 Figure 19 |
Next, the rubber cushion assembly of related elastic wheel (embodiment 2～6) is made by the composite material of rubber section and nylon cord, tests its ride comfort and road-holding property.The tranverse sectional thickness of each rubber cushion assembly is 10mm, and width is 25mm.The diameter of each nylon cord of carcass plies is 0.4mm, and the number of cord is that a cord is arranged in the wide carcass plies of every 1mm.
On the Tire testing road, test these wheels under these conditions, ride comfort, handle wheel response, stability, thread-changing convergence and vehicle launch when turning and the adherence properties when stopping to be assessed by the sensation of chaufeur by steering vehicle.The result illustrates with from 1 to 10 mark, and numerical value is high more, and ecbatic is good more.Test result is illustrated in the table 2.
Next, the road-holding property of the elastic wheel of the embodiment shown in Figure 15 and 16 (embodiment 7～11) and noise abatement performance are tested by driving actual vehicle.In this test, rim size is 18 * 8.0-JJ, and tire size is 245/45R18, and interior pressure is 230kPa, and testing vehicle is the passenger vehicle of piston swept velume 3000cc.The noise abatement performance is illustrated by the index from the frequency analysis result, and this index is illustrated in the wave band of 100～200Hz and peak value occurs, and wherein aluminium wheel rim (traditional embodiment) is expressed as 100.Numerical value is more little, and ecbatic is good more.Test result is illustrated in the table 3.Figure 20 illustrates the frequency analysis result of traditional embodiment and embodiment 7.
Be appreciated that from above-mentioned test result the elastic wheel that can confirm present embodiment can reduce noise and not reduce road-holding property.
Claims (15)
1. an elastic wheel comprises
Be used to install the wheel rim of tire, it upwards extended in week,
Be fixed on the wheel shaft wheel disc and
Be used for flexibly being connected the connecting device between this wheel rim and the wheel disc,
It is characterized in that this connecting device comprises
A pair of axially spaced portion inner flange, each portion inner flange are arranged on interior all sides of wheel rim and are radially inwardly outstanding from this, and upwards extend in week,
Be arranged on the outside bead on this wheel disc radially outer part, this outside bead is arranged in the space between the described portion inner flange and in its both sides axial slits, and in upwards extension of week,
A pair of rubber cushion assembly, each rubber cushion assembly are arranged in the described axial slits and connect described inside and outside bead, wherein
The axial inboard of each portion inner flange is provided with at least one along first groove that circumferentially extends,
The both sides of described outside bead respectively are provided with at least one second groove, and this second groove is along circumferentially extending so that towards first groove of each portion inner flange,
An axial end of each rubber cushion assembly is inserted in first groove of this portion inner flange, and the other end is inserted in second groove of this outside bead, and
Between interior all sides and described outside bead of described wheel rim, a radial gap is set in described space.
2. according to the elastic wheel of claim 1, wherein
The axial inboard of described portion inner flange is provided with first groove of a plurality of circumferentially spaceds,
The both sides of described outside bead are provided with second groove of a plurality of circumferentially spaceds, and
The rubber cushion assembly of a plurality of circumferentially spaceds is arranged in each axial slits.
3. according to the elastic wheel of claim 1, wherein
At least one portion inner flange can be pulled down from wheel rim.
4. according to the elastic wheel of claim 1, wherein
At least one portion inner flange comprises
Be formed at securely on interior all sides of described wheel rim base portion and
By the projected edge plate of screw thread device attachment to this base portion, thereby, can easily this projected edge plate be pulled down from this base portion.
5. according to the elastic wheel of claim 1, wherein
In described radial gap, shock attenuation device is set, is used to reduce the impulsive force that produces when radially-outer surface when described outside bead contacts interior all side of described wheel rim.
6. according to the elastic wheel of claim 1, wherein
Described first groove, second groove and the rubber cushion assembly that is clipped in therebetween all are the annular shape of upwards extending continuously in week.
7. according to the elastic wheel of claim 1, wherein
Described rubber cushion assembly comprises the composite material with rubber section and cord.
8. according to the elastic wheel of claim 1, wherein
Described rubber cushion assembly comprises the composite material with cord and rubber section, and described cord upwards extended in week.
9. according to the elastic wheel of claim 1, wherein
Described rubber cushion assembly comprises the composite material with cord and rubber section, and described cord extends in the axial direction.
10. according to the elastic wheel of claim 1, wherein
Described rubber cushion assembly comprises the composite material with cord and rubber section, and described cord extends diametrically.
11. according to each elastic wheel in the claim 7,8,9 or 10, wherein
Described cord is organic cord or steel cord.
12. according to the elastic wheel of claim 1, wherein
Described rubber cushion assembly is compressed between second groove of first groove of described portion inner flange and described outside bead in the axial direction.
13. according to the elastic wheel of claim 12, wherein
Described portion inner flange comprise be formed at securely in advance in the described wheel rim first portion inner flange on all sides and
Be welded to second portion inner flange on all sides in this wheel rim afterwards.
14. a manufacturing is according to the method for the elastic wheel of claim 12, wherein this method comprises
Prepare the wheel rim main part, this wheel rim main part has second portion inner flange that is formed at first portion inner flange on its interior all side in advance securely and was attached to all sides in this wheel rim afterwards separately,
Prepare the rubber cushion assembly of a pair of prior sulfuration,
Preparation is provided with the wheel disc of outside bead, and this outside bead has second groove,
Pre-assy wheel rim, rubber cushion assembly and second bead make the axial end of each rubber cushion assembly be inserted into this first groove and second groove,
The rubber cushion assembly of compression clip between this first bead and second bead in the axial direction by promoting second portion inner flange towards this first portion inner flange, and
When keeping this rubber cushion assembly of compression, this second portion inner flange is welded to interior all sides of this wheel rim.
15. according to the manufacture method of the elastic wheel of claim 14, wherein
The scope of the pressure between described first portion inner flange and second portion inner flange is 15～25kN.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP163525/2004 | 2004-06-01 | ||
| JP2004163525A JP2005343263A (en) | 2004-06-01 | 2004-06-01 | Elastic wheel |
| JP217592/2004 | 2004-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1918011A CN1918011A (en) | 2007-02-21 |
| CN100429085C true CN100429085C (en) | 2008-10-29 |
Family
ID=35496040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200580004529XA Expired - Fee Related CN100429085C (en) | 2004-06-01 | 2005-06-01 | Elastic wheel and method of manufacturing the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005343263A (en) |
| CN (1) | CN100429085C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154639B (en) * | 2019-05-21 | 2022-09-27 | 株洲时代新材料科技股份有限公司 | Iso-strain elastic wheel, assembling method and rigidity designing method thereof |
| CN110154640B (en) * | 2019-05-21 | 2023-01-31 | 株洲时代新材料科技股份有限公司 | Elastic wheel for rail transit vehicle, assembling method of elastic wheel and rigidity design method of elastic wheel |
| CN110297383B (en) * | 2019-07-12 | 2021-07-30 | 四川长虹电器股份有限公司 | Fluorescent color wheel support of laser projector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549590A (en) * | 1984-03-16 | 1985-10-29 | Sahagian Edward H | Resilient wheels |
| US4765382A (en) * | 1987-07-20 | 1988-08-23 | Sahagian Edward H | Reinforced resilient wheel |
| CN2199069Y (en) * | 1994-01-05 | 1995-05-31 | 青岛隐珠车辆厂 | Plastics-covered vehicle wheel |
| JP2001088502A (en) * | 1999-09-20 | 2001-04-03 | Bridgestone Corp | Assembly of tire and wheel |
| JP2002096604A (en) * | 2000-09-26 | 2002-04-02 | Bridgestone Corp | Elastic wheel |
| JP2002234302A (en) * | 2001-02-09 | 2002-08-20 | Bridgestone Corp | Combined structure of elastic wheel and suspension member |
| CN1441731A (en) * | 2000-07-10 | 2003-09-10 | 株式会社普利司通 | Elastic wheel |
-
2004
- 2004-06-01 JP JP2004163525A patent/JP2005343263A/en active Pending
-
2005
- 2005-06-01 CN CNB200580004529XA patent/CN100429085C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549590A (en) * | 1984-03-16 | 1985-10-29 | Sahagian Edward H | Resilient wheels |
| US4765382A (en) * | 1987-07-20 | 1988-08-23 | Sahagian Edward H | Reinforced resilient wheel |
| CN2199069Y (en) * | 1994-01-05 | 1995-05-31 | 青岛隐珠车辆厂 | Plastics-covered vehicle wheel |
| JP2001088502A (en) * | 1999-09-20 | 2001-04-03 | Bridgestone Corp | Assembly of tire and wheel |
| CN1441731A (en) * | 2000-07-10 | 2003-09-10 | 株式会社普利司通 | Elastic wheel |
| JP2002096604A (en) * | 2000-09-26 | 2002-04-02 | Bridgestone Corp | Elastic wheel |
| JP2002234302A (en) * | 2001-02-09 | 2002-08-20 | Bridgestone Corp | Combined structure of elastic wheel and suspension member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005343263A (en) | 2005-12-15 |
| CN1918011A (en) | 2007-02-21 |
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