CN208896786U - A kind of Novel noise reduction pneumatic tire - Google Patents

Abstract

A kind of Novel noise reduction pneumatic tire is related to taking turns air tyre technical field, including tyre surface, sidewall, tire shoulder, tyre bead, toe mouth, carcass, belt, the first buffer layer, the second buffer layer and damper；The damper includes bottom surface, top surface, which is fixed on carcass radially inner side, which is placed in carcass inner space, which is rough surface；Tyre noise can be reduced from carcass inside and outside, and can change sound wave reflection direction while absorbing noise in tire, eliminated tire standing internal wave, reduced tire internal resonance noise.

Description

A kind of Novel noise reduction pneumatic tire

Technical field

The utility model relates to pneumatic tire technical fields, and in particular to a kind of Novel noise reduction pneumatic tire.

Background technique

The noise that tire occurs when rolling mainly acts on two aspect factors by inside tires excitation and road surface and causes, and takes turns Tire internal motivation generate the main reason for first is that the resonance of tire cavity.It is more in the prior art to alleviate inside tires resonance Increase the denoiser made of sound-absorbing material using the composite shock-absorbing layer inhibition carcass vibration in carcass, or in tyre cavity, passes through suction Noise is received to slow down tire internal resonance.But since carcass and wheel rim form enclosure space and gassy, when in tire air by swashing When encouraging, sound wave is easy to be reflected and be overlapped mutually, and generates standing wave phenomena, so that tire cavity be made to generate resonance noise.It is existing Noise silencer is mostly the band-like smooth structure body being pasted in tire, not can solve tire standing internal wave problem.

Summary of the invention

To overcome above-mentioned technical problem, the utility model provides a kind of Novel noise reduction tire, can reduce from carcass inside and outside Tyre noise, and sound wave reflection direction can be changed while absorbing noise in tire, tire standing internal wave is eliminated, tire internal resonance is reduced and makes an uproar Sound.

To achieve the above objectives, the utility model uses following technical scheme: a kind of Novel noise reduction pneumatic tire, including tire Face, sidewall, tire shoulder, tyre bead, toe mouth, carcass, belt, the first buffer layer, the second buffer layer and damper；The tyre surface is located at The carcass radially outer, the sidewall are located at the carcass axially outer, and the tire shoulder is located at the tyre surface to the sidewall Extended spot and the tyre surface is connect with the sidewall, the tyre bead is located at the carcass inner radial and the carcass shafts are outside Portion, the toe mouth are located at the tyre bead radially outer；The belt be located at the tyre surface radially inner side and with the carcass diameter Outward, the belt two sides prolong carcass and extend axially to the tire shoulder radially inner side；

First buffer layer is set to belt two sides radial outside, and first buffer layer is set to tyre surface diameter Inwardly, first buffer layer is wrapped circumferentially around carcass periphery；It is axially external that second buffer layer is set to the tyre bead And the toe mouth axially inner side, and extend radially to the sidewall axially inner side.

In the present invention, the first buffer layer banding shoulder portion belt both side ends inhibit to swash due to squeegee action The noise for playing belt and carcass vibration and generating；Second buffer layer tightens tyre bead and sidewall carcass, to be resistant to due to carcass The stress that deformation generates.

The damper is vesicular texture body, which includes bottom surface and top surface, which is fixed on tire Body radially inner side, the top surface are placed in carcass inner space and towards tire axis, and the bottom surface is radial relative to top surface direction Outside；The top surface is rough surface.

In the present invention, when tire sound in the body reaches damper top surface, it is porous that a part of sound wave enters damper Material absorbs, and another part sound wave is reflected by damper top surface.Since the generation of standing wave is passed since two column direction of vibration are identical It broadcasts contrary wave to be formed by stacking, therefore to eliminate the reflection path that standing wave just needs to change sound wave.The damper top surface For rough surface, sound wave is reflected through the rough surface in tire, and a part of reflected acoustic wave does not press original route return, reduces sound wave superposition, Weaken the generation of standing wave.

In some specific embodiments of the utility model, further, the rough surface is irregular face, this is not advised Then bread is containing several fins arranged at random and groove；The irregular face is enough further to make sound wave in tire change reflection path, subtracts Stay a short time wave.

In other specific embodiments of the utility model, it is preferred that the rough surface includes several relative to wheel The region of disorder that tire axle center is centrosymmetric, the region of disorder includes the first fin, the second fin and the first groove, second recessed Slot and third groove, for first fin between the first groove and the second groove, which is located at the second groove and Between three grooves；The distance that first fin extends to carcass inner radial is greater than the second fin.

The region of disorder is preferably distributed along carcass circumferential array and fastened to each other connects into close ring.

It is furthermore preferred that the first ridge in cross-section top margin is at the first salient angle, the second ridge in cross-section top margin is at Two salient angles；For the first groove cross section top margin at the first re-entrant angle, the second groove cross section top margin is described at the second re-entrant angle Third groove cross section top margin at third re-entrant angle, the ratio between angle of first salient angle and the second salient angle for 0.6 or more and 0.9 with Under, the ratio between angle of first re-entrant angle and the second re-entrant angle is for 1.2 or more and 1.5 hereinafter, the angle of the second re-entrant angle and third re-entrant angle The ratio between degree is 0.5 or more and 0.8 or less.

In this preferred embodiment, the specific structure of the region of disorder can more fully guarantee the anti-of sound wave in tire It penetrates that direction is different from original route, further improves the elimination factor of standing wave, while the central symmetry design of region of disorder, make to subtract Shaking device has local irregularities, integral central symmetrical structure, and damper is made to guarantee the balance of tire while eliminating standing wave And uniformity, it avoids being distributed asymmetric initiation vibration due to tire total quality.

The utility model technical effect achieved are as follows:

First, second buffer layer tightens belt and carcass, inhibits vibration to generate from carcass outside；Damper is out of carcass Portion absorbs the noise generated due to carcass vibration, and can make sound wave irregular reflection, eliminates standing wave phenomena, mitigates tire internal resonance and makes an uproar Sound；Damper generally centrosymmetric structure guarantees wheel balance.

Detailed description of the invention

Fig. 1 is the cross-sectional view of the utility model embodiment 1；

Fig. 2 is the circumferencial direction sectional view along tire equator line of the utility model embodiment 1；

Fig. 3 is the damper region of disorder structural schematic diagram of the utility model embodiment 2；

Fig. 4 is the circumferencial direction sectional view along tire equator line of the utility model embodiment 2.

Wherein, the identical appended drawing reference of identical component in the accompanying drawings；The attached drawing is not drawn according to the actual ratio.

Specific embodiment

Embodiment 1

A kind of Novel noise reduction pneumatic tire, refering to fig. 1 and Fig. 2, including tyre surface 1, sidewall 2, tire shoulder 3, tyre bead 4, toe mouth 5, Carcass 6, belt 7, the first buffer layer 8,9 layers of the second damping and damper 10；The direction A is that carcass 6 is radial, and the direction B is carcass 6 It is axial；The tyre surface 1 is located at 6 radially outer of carcass, and the sidewall 2 is located at 6 axially outer of carcass, the tire shoulder 3 It is connect positioned at the tyre surface 1 to 2 extended spot of sidewall and by the tyre surface 1 with the sidewall 2, the tyre bead 4 is located at described 6 inner radial of carcass and 6 axially outer of the carcass, the toe mouth 5 are located at 4 radially outer of tyre bead；The belt 7 In 1 radially inner side of tyre surface and with 6 radial outside of carcass, 7 two sides of belt prolong carcass 6 and extend axially to the tire 3 radially inner side of shoulder；

First buffer layer 8 is set to the 7 two sides radial outside of belt, and first buffer layer 8 is set to tire Inwardly, first buffer layer 8 is wrapped circumferentially around carcass periphery to face diameter；9 layers of second damping is set to 4 axis of tyre bead Outward and 5 axially inner side of toe mouth, and 2 axially inner side of sidewall is extended radially to.

The damper 10 is vesicular texture body, which includes bottom surface 11 and top surface 12, the bottom surface 11 Be fixed on 6 radially inner side of carcass, which is placed in 6 inner space of carcass and towards tire axis, the bottom surface 11 relative to The top surface 12 is towards radial outside；The top surface 12 is coarse irregular face, and the irregular bread is several convex containing what is arranged at random Rib and groove.

In the present invention, unless otherwise specified, irregular face refers to the relatively irregular face with certain roughness, Rather than absolute irregular face.

In the present embodiment, when sound wave reaches 10 top surface 12 of damper in carcass 6, a part of sound wave enters 10 quilt of damper Porous material absorbs, and another part sound wave is reflected by 10 top surface 12 of damper.Since the generation of standing wave is due to two column vibration sides To identical, the opposite wave in the direction of propagation is formed by stacking, therefore to eliminate the reflection path that standing wave just needs to change sound wave.It is described to subtract Shake 10 top surface 12 of device makes sound wave in tire change reflection path, reduces the generation of standing wave.

Embodiment 2

For above-described embodiment, since 10 top surface 12 of damper is the irregular face being randomly provided, sound wave is described in tire When top surface 12 is reflected, there may be the reflection path of acoustic wave segment to be still overlapped with original route, standing wave eradicating efficacy is poor.

Therefore though this particularly preferred embodiment is implemented using above-mentioned apparatus and application method, referring to Fig. 3 and Fig. 4, The difference is that

The rough surface includes 20 centrosymmetric regions of disorder 101, and the region of disorder 101 includes the first fin 13, the second fin 14 and the first groove 15, the second groove 16 and third groove 17, first fin 13 be located at the first groove 15 with Between second groove 16, second fin 14 is between the second groove 16 and third groove 17；First fin 13 is to carcass 6 The distance that inner radial extends is greater than the second fin 14；The region of disorder 121 along 6 circumferential array of carcass be distributed and it is fastened to each other Connect into close ring.

Also, the 13 cross section top margin of the first fin is at the first salient angle 18, the 14 cross section top margin of the second fin at Second salient angle 19；First groove, the 15 cross section top margin is at the first re-entrant angle 20, and the 16 cross section top margin of the second groove is at Two re-entrant angles 21, the 17 cross section top margin of third groove is at third re-entrant angle 22.First salient angle 18 is 63 °, the second salient angle 19 It is 73 °；First re-entrant angle 20 is 89 °, the second re-entrant angle 21 is 66 °, and third re-entrant angle 22 is 110 °；

The damper is made of melamine Foamex, the material be in three-dimensional net structure, have lightweight, sound-absorbing, It is fire-retardant, stable, be applicable in warm area it is wide, can be kept within the temperature range of -180 to 200 DEG C stabilization, can good absorption inside tires make an uproar Sound, and it is resistant to severe temperature environment during tire used, safety is higher.

In the preferred embodiment, the specific structure of the region of disorder 101 can more fully guarantee sound wave in tire Reflection direction is different from original route, further improves the elimination factor of standing wave, while the central symmetry of region of disorder 101 is set Meter makes damper 10 have local irregularities, integral central symmetrical structure, and damper 0 is made to guarantee wheel while eliminating standing wave The balance and uniformity of tire avoid being distributed asymmetric initiation vibration due to tire total quality.

The utility model is described above with reference to preferred embodiment, but the protection scope of the utility model is not Limited to this, any all technical solutions fallen within the scope of the appended claims are within the protection scope of the present utility model.? In the case where not departing from the scope of the utility model, various improvement can be carried out to it and can be replaced with equivalent therein Component.Especially, as long as structural conflict is not present, items technical characteristic mentioned in the various embodiments can be in any way It combines.

Claims (6)

1. a kind of Novel noise reduction pneumatic tire, which is characterized in that including tyre surface, sidewall, tire shoulder, tyre bead, toe mouth, carcass, banding Layer, the first buffer layer and the second buffer layer；The tyre surface is located at the carcass radially outer, and the sidewall is located at the carcass shafts To outside, the tire shoulder is located at the tyre surface and connect to the sidewall extended spot and by the tyre surface with the sidewall, the tire Circle is located at the carcass inner radial and the carcass axially outer, and the toe mouth is located at the tyre bead radially outer；The band Beam layer be located at the tyre surface radially inner side and with the carcass radial outside, the belt two sides prolong carcass extend axially to it is described Tire shoulder radially inner side；

First buffer layer is set to belt two sides radial outside, and it is inside that first buffer layer is set to tyre surface diameter Side, first buffer layer are wrapped circumferentially around carcass periphery；Second buffer layer is set to that the tyre bead is axially external and institute Toe mouth axially inner side is stated, and extends radially to the sidewall axially inner side.

2. a kind of Novel noise reduction pneumatic tire according to claim 1, which is characterized in that the noise abatement tire further includes damping Device, the damper are vesicular texture body, which includes bottom surface and top surface, which is fixed on carcass radial direction Inside, the top surface are placed in carcass inner space and towards the carcass centers of circle, and the bottom surface is relative to the top surface towards radial outside；It should Top surface is rough surface.

3. a kind of Novel noise reduction pneumatic tire according to claim 2, which is characterized in that the rough surface is irregular Face, the irregular bread is containing several fins arranged at random and groove.

4. a kind of Novel noise reduction pneumatic tire according to claim 2, which is characterized in that the rough surface includes several phases For the region of disorder that tire axis is centrosymmetric, the region of disorder include the first fin, the second fin and the first groove, Second groove and third groove, for first fin between the first groove and the second groove, it is recessed which is located at second Between slot and third groove；The distance that first fin extends to carcass inner radial is greater than the second fin.

5. a kind of Novel noise reduction pneumatic tire according to claim 4, which is characterized in that first ridge in cross-section top While the second ridge in cross-section top margin is at the second salient angle at the first salient angle；The first groove cross section top margin is recessed at first Angle, the second groove cross section top margin is at the second re-entrant angle, and the third groove cross section top margin is at third re-entrant angle, and described first The ratio between angle of salient angle and the second salient angle is 0.6 or more and 0.9 hereinafter, the ratio between first re-entrant angle and the angle of the second re-entrant angle are 1.2 or more and 1.5 hereinafter, the ratio between angle of the second re-entrant angle and third re-entrant angle is 0.5 or more and 0.8 or less.

6. a kind of Novel noise reduction pneumatic tire according to claim 4, which is characterized in that the region of disorder is along carcass week To array distribution and fastened to each other connect into close ring.