CN100475522C - Exterior component - Google Patents
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- CN100475522C CN100475522C CN 200610058153 CN200610058153A CN100475522C CN 100475522 C CN100475522 C CN 100475522C CN 200610058153 CN200610058153 CN 200610058153 CN 200610058153 A CN200610058153 A CN 200610058153A CN 100475522 C CN100475522 C CN 100475522C
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- liner plate
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Abstract
A fender liner includes a surface layer serving as the outermost layer and an inner layer located between the surface layer and the outer surface of a wheel well. The surface layer and the inner layer are formed of nonwoven fabric. Alternatively, the nonwoven fabric forming the surface layer may have a higher apparent density and a smaller fiber diameter than those of the nonwoven fabric forming the inner layer. In this case, the noise reduction capability and the durability are both improved.
Description
Technical field
The present invention relates to for example dashboard liner plate or bottom baffle etc., be installed in the exterior component on the outer surface of automobile body bottom.
Background technology
Usually, the damage of the vehicle body that causes etc. of splashing for the stained of the vehicle body that suppresses to cause because of adhering to of rainwater or mud etc. and because of gravel or stone etc. is equipped with exterior components such as dashboard liner plate or bottom baffle at the body bottom section of vehicle.The aspect of the rigidity of, damage stained from guaranteeing to resist fully etc. considers that this exterior component is a material with synthetic resin, synthetic rubber etc., the formation of hard ground.But the exterior component of this hard can produce impulsive sound (hit noise) in collisions such as rainwater, mud, gravel, stone.And it is indoor that this hit noise is transmitted to car by vehicle body.Therefore, the exterior component of hard can not improve the indoor quiet performance of car, also becomes noise source sometimes.
So, in order to slow down this hit noise, for example open in the 2000-264255 communique the spy, the dashboard liner plate that is made of hardboard is disclosed.This hardboard perhaps utilizes the thermoplastic resin powder that fiber is carried out welding by by adhesive fiber being bondd, and perhaps fiber and low-melting fiber is mixed the back heat welded and forms.And, open in the 2000-264255 communique the spy and to record:, relax the impact that the collision of sand, stone, water etc. causes, so reduce hit noise because the dashboard liner plate that is made of hardboard is in light weight and have resiliency.
On the other hand, for example open in the 2004-359066 communique the spy, disclose the exterior component that is made of the laminar formed body that comprises nonwoven, this exterior component uses as the bottom baffle simultaneously.Nonwoven by physical property a lot of fibers are interweaved, method such as perhaps carry out to a lot of fibers and interweave bonding to form with adhesive.By the exterior component that the laminar formed body that comprises this nonwoven constitutes, have by surrounding the short space (unit) that forms between the fiber that interweaves.These unit have the function of noises such as absorbing tyre surface noise or hit noise, thereby reduce the propagation of noise in car.So-called " tyre surface noise " is that the tyre surface (part that contacts with the road surface) of tire contacts the noise (fricative) that produces with the road surface when travelling owing to vehicle.In addition, open in the 2004-359066 communique, put down in writing laminar formed body and had and carry out stacked and stepped construction that form, and made these layers have mutually different function a plurality of layer the spy.
But, in the recent vehicle, exist improving the trend that the indoor quiet performance demands of car increases.This trend all exists in all vehicles, but wherein, especially remarkable hybrid vehicles of developing from environmental angle or fuel cell formula vehicle.For corresponding to this requirement, in the recent automobile, exist and reduce by the noise that power source produced such as explosive motor or motor and by the trend of the noises that PWTN produced such as speed changer.In addition, on the basis of the noise that this automobile driving of reduction system is produced, reduce the indoor recognizable noise of car and become important problem.
As at the indoor recognizable noise of car, impact sound and the tyre surface noise except above-mentioned, can also enumerate load noise.Should " load noise " be meant that the vibration of tire was transmitted to vehicle body by suspension, make the indoor air vibration of car and the noise (cavity resonance sound) that produces by the vibration of this vehicle body.These impact sound, tyre surface noise and load noise is the very difficult noise of fundamentally stopping.Therefore, want to be reduced in the indoor recognizable noise of car, just must suppress because of impacting the body vibrations that sound, tyre surface noise and load noise etc. cause.
So, further reduce under the situation of noise attempting, open the 2000-264255 communique by above-mentioned spy, the mitigation performance of the impact that causes for the collision (impacting) that improves by sand, stone, water etc. is considered the raising resiliency.But, under the situation that improves resiliency, also descend because can dope rigidity, so may reduce for the endurance quality that impacts.In addition, open in the 2000-264255 communique,, do not have open or propose to reduce the content of this fricative such as tyre surface noise and load noise and cavity resonance sound though it is on the books to impact sound for reduction the spy.On the other hand, open in the 2004-359066 communique above-mentioned spy, having put down in writing increases unit number more and just can improve sound-absorbing effect more, but because only merely increase the decline that unit number might cause rigidity, so also worry in this case to reduce for the endurance quality that impacts.Thereby, be difficult to design and satisfy simultaneously that noise reduces performance and for the exterior component of the endurance quality that impacts.
Summary of the invention
The purpose of this invention is to provide a kind of exterior component, it can be suitable for noise simultaneously and reduce performance and endurance quality.
To achieve these goals, in an embodiment of the invention, provide a kind of exterior component, it is installed on the outer surface of automobile body bottom, has and the corresponding shape of at least a portion of described body bottom section.This exterior component has: the top layer, and it is installed at this exterior component under the state on the outer surface of described body bottom section, becomes outermost layer; And internal layer, it is installed at this exterior component under the state on the outer surface of described body bottom section, is disposed between the outer surface of described top layer and described body bottom section.Described top layer and described internal layer are formed by nonwoven respectively, and this nonwoven is laminar formation with a lot of fiberizings.The nonwoven that forms described top layer is compared with the nonwoven that forms described internal layer, has high apparent density, also has little fibre diameter simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of a part that expression has the vehicle of the related dashboard liner plate of an embodiment of the invention.
Fig. 2 is the stereogram of expression from the state of the dashboard liner plate of vehicle outside observation Fig. 1.
Fig. 3 is the stereogram of expression from the state of the dashboard liner plate of vehicle interior side observation Fig. 1.
Fig. 4 is the schematic diagram along the cross-section structure of the 4-4 line of Fig. 1 of expression dashboard liner plate.
Fig. 4 A is the enlarged drawing of the part that is surrounded by circle 4A of Fig. 4.
The specific embodiment
Below, an embodiment who exterior component of the present invention is embodied as dashboard liner plate 14 is described.
Fig. 1 shows the front portion of the vehicle 11 that possesses dashboard liner plate 14.Dashboard 11a bottom as the vehicle body part of vehicle 11 is provided with the wheel proloculum 13 that is used to accommodate tire 12.This is taken turns proloculum 13 and opens to the below and the side of vehicle 11, has and road surface 12a opposed outer surface 13a.Described dashboard liner plate 14 is installed on the wheel proloculum 13 in the mode that covers this outer surface 13.Dashboard liner plate 14 prevents to protect this outer surface 13a because of the stone that tire 12 splashes from road surface 12a, mud, gravel, rainwater, ice cube (snow) etc. damage outer surface 13a.And this dashboard liner plate 14 reduces performance by the performance noise, improves the indoor quiet performance of car.By the noise that dashboard liner plate 14 reduces, comprise collision dashboard liner plate 14 such as stone and the impulsive sound (impacting sound) of generation, fricative (tyre surface noise) and the cavity resonance sound (load noise) that produces because of the contact between road surface 12a and the tire 12 when vehicle 11 travels.
Fig. 2 and Fig. 3 show respectively from the outside of vehicle 11 and the inboard state of observing dashboard liner plate 14.Dashboard liner plate 14 has the shape of taking turns proloculum 13 corresponding to described, forms by sheeting 15 being shaped to along the shape of the outer surface 13a that takes turns proloculum 13.On the outer edge of dashboard liner plate 14, run through that a plurality of installing holes 16 being set.Securing member such as pin or screw passes these installing holes 16, rivets or is screwed on the wheel proloculum 13, and dashboard liner plate 14 is fixed on the wheel proloculum 13 thus.At the central portion of dashboard liner plate 14, be provided with the breach (opening) 17 of the suspension (omitting diagram) that allows by support tire 12.This breach 17 avoids dashboard liner plate 14 to contact with suspension, suppresses to produce noise because of dashboard liner plate 14 contacts with suspension.
In addition, the inner surface of dashboard liner plate 14, promptly with the relative face of outer surface 13a of wheel proloculum 13 on, be provided with two reinforcements (prominent bar) 18.Reinforcement 18 is given prominence to and is formed to the outer surface 13a of wheel proloculum 13 by dashboard liner plate 14, and its section is the ditch shape.18 pairs of dashboard liner plates 14 of reinforcement are strengthened, and improve the rigidity of this dashboard liner plate 14.In the time of on dashboard liner plate 14 being installed in wheel proloculum 13, contact with the outer surface 13a of wheel proloculum 13 by the surface that makes reinforcement 18, the more than half portion and the outer surface 13a of the inner surface of dashboard liner plate 14 keep apart.Therefore, between the outer surface 13a of the inner surface of dashboard liner plate 14 and wheel proloculum 13, form air layer 19 (with reference to Fig. 4).
As shown in Figure 4, regard as at the described air layer 19 that will guarantee owing to the existence of described reinforcement 18 under the situation of inscape of dashboard liner plate 14, it is stacked and form stepped construction that dashboard liner plate 14 has the layer that will be made of sheeting 15 and air layer 19.And sheeting 15 itself also has the stepped construction that a plurality of folding layer by layer formed.In the present embodiment, sheeting 15 has 2 stacked layers, i.e. top layer 21 and internal layer 22.Therefore, dashboard liner plate 14 has comprising that top layer 21, internal layer 22 and air layer 19 these 3 layers carry out stacked and lit-par-lit structure that form.Be installed at dashboard liner plate 14 under the state on the outer surface 13a of wheel proloculum 13, top layer 21 constitutes the outermost layer (layer directly relative with tire 12) of dashboard liner plates 14, and internal layer 22 is configured between top layer 21 and the outer surface 13a.Top layer 21 and internal layer 22 form as material with nonwoven respectively, and this nonwoven is laminar formation with a lot of fiberizings.
Described top layer 21 comprises a lot of the 1st fibers 23, and the binder fibre 24 that plays the adhesive effect.The 1st fiber 23 is the principal fibers that form the nonwoven on top layer 21.Binder fibre 24 is bonded with each other a lot of the 1st fibers 23.Between the 1st fiber 23, become the state that is interweaved between the binder fibre 24 or between the 1st fiber 23 and the binder fibre 24, top layer 21 has the mesh-shape structure thus.Therefore, 21 inside forms a lot of unit 25 on the top layer, and this unit 25 is by between the 1st fiber 23, between the binder fibre 24 or extremely small space that fences up of the 1st fiber 23 and binder fibre 24.
Described internal layer 22 comprises a lot of the 2nd fibers 26, a lot of the 3rd fiber 27 and the binder fibre 24 that plays the adhesive effect.The 2nd fiber 26 is the principal fibers that form the nonwoven of internal layer 22.The 3rd fiber 27 constitutes nonwoven with the 2nd fiber 26, and the volume of internal layer 22 is increased.The binder fibre 24 on binder fibre 24 and described top layer 21 similarly, with a lot of the 2nd fibers 26 and 27 combinations of the 3rd fiber.Become the state that is interweaved between the 2nd fiber 26, between the 3rd fiber 27, between the binder fibre 24 or between the wantonly at least 2 kinds of fibers in these fibers 26,27,24, internal layer 22 has the mesh-shape structure thus.Therefore, form a lot of unit 25 in the inside of internal layer 22, this unit 25 is the extremely small spaces that surrounded by these fibers 26,27,24.
In the boundary of described top layer 21 and described internal layer 22, the 1st fiber 23, binder fibre the 24, the 2nd fiber 26 and the 3rd fiber 27 are interweaved, perhaps binder fibre 24 is bonded with each other top layer 21 and internal layer 22 thus with merging between the 1st～the 3rd fiber 23,26,27.Top layer 21 and internal layer 22 constitute as " aggregate of unit 25 " respectively.And, by these unit 25 performance sound-absorbing effects, the function of dashboard liner plate 14 performances reduction noise.
The nonwoven that forms top layer 21 is compared with the nonwoven that forms internal layer 22, the apparent density height, thus, energy such as favorable durability such as performance such as the collision (impacting) of 12 pairs of stones that splash of tire, mud, gravel, rainwater, ice cube (snow) etc.So-called " apparent density " is the value of expression apparent density, and along with the rising of apparent density, the fibre density of nonwoven uprises.That is, by closely disposing fiber (the 1st fiber 23), the apparent density height is compared with internal layer 22 in top layer 21, has the rigidity higher than internal layer 22.By so that the high top layer 21 of rigidity becomes outermost mode, dashboard liner plate 14 is installed on the wheel proloculum 13, can anti-ly well impact.
If improve the apparent density of the nonwoven that forms top layer 21, then not only rigidity improves, and the surface smoothing on top layer 21 also improves.That is, if the apparent density height, then because fiber (the 1st fiber 23) would closely dispose and the fibre density height, so can reduce the fibre pick on 21 surfaces, top layer.This 21 surface is twined and is bonded on this surface by fiber on the top layer with regard to the stone that suppressed tire 12 and eject etc.Therefore, dashboard liner plate 14 can be anti-fouling well, and the fibrous fracture that takes place when being suppressed at the stone that remove to twine etc.
In addition, if improve to form the apparent density of the nonwoven on top layer 21, then to reduce aspect of performance also favourable obtaining favorable noise.That is, the indoor noise that is transmitted to vehicle 11 comprises: the noise of propagating as medium with air, for example tyre surface noise etc.; And with the noise of solids such as vehicle body as the medium propagation, for example hit noise or load noise etc.In these noises, the noise so that air is propagated as medium can reduce by " sound-absorbing effect " of unit 25.That is to say that when noise passed through top layer 21 and internal layer 22, sound-absorbing effects were brought into play in unit 25 as mentioned above.Thereby dashboard liner plate 14 absorbs with the noise of air as medium, reduces this noise.
On the other hand, the noise so that solid is propagated as medium can reduce by a plurality of layers " effectiveness in vibration suppression " that constitutes dashboard liner plate 14.That is to say because have the top layer 21 of apparent density (fibre density) height and high stiffness and than the internal layer 22 of these top layer 21 softnesses, so dashboard liner plate 14 have concurrently intensity and flexible the two.Therefore, dashboard liner plate 14 is difficult to distortion with respect to the vibration that is produced by noise, and the effectiveness in vibration suppression of performance absorption vibration flexibly, reduces the noise of propagating as medium with solid.
And described air layer 19 improves the noise that is obtained by dashboard liner plate 14 and reduces performance by performance sound-absorbing effect and performance effectiveness in vibration suppression.That is to say that under the situation that the noise that passes top layer 21 and internal layer 22 is propagated, air layer 19 is brought into play sound-absorbing effect by the phase deviation that makes noise in air layer 19.The noise that this phase place is offset becomes the sound that is difficult to conduct so-called " noise " and is identified.In addition, even under as the top layer 21 of solid or situation about vibrating owing to noise as the internal layer 22 of solid, air layer 19 suppresses dashboard liner plates 14 and contact with wheel proloculum 13, by suppressing this vibration to the propagation of taking turns proloculum 13, brings into play effectiveness in vibration suppression.As mentioned above, by air layer 19 performance sound-absorbing effect and effectiveness in vibration suppression, dashboard liner plate 14 reduces the noise of propagating as medium with air and solid well.
In addition, can adjust the frequency band of the noise that utilizes this air layer reduction by the volume of change air layer 19.The change of the volume of air layer 19, be by changing reinforcement 18 height, be that the thickness of air layer 19 carries out.Specifically, reduce performance, and the viewpoint that dashboard liner plate 14 suitably is contained in the wheel proloculum 13 is considered that the thickness of air layer 19 is preferably set to more than or equal to 5mm and is less than or equal to 40mm from improving noise well.Under the situation of the not enough 5mm of the thickness of air layer 19, air layer 19 may not can be brought into play sufficient sound-absorbing effect, can not fully improve noise and reduce performance.On the other hand, surpass under the situation of 40mm,, dashboard liner plate 14 required spaces are installed increase, possibly dashboard liner plate 14 can't be contained in and take turns in the proloculum 13 though can bring into play sufficient sound-absorbing effect at the thickness of air layer 19.In addition, be set at respectively under the situation of 0mm, 5mm, 10mm, 20mm, 40mm, measure acoustic absorptivity for 2000Hz sound at thickness with air layer 19.Its result, acoustic absorptivity is to be 7% under the situation of 0mm at thickness, is to be 30% under the situation of 5mm at thickness, is to be 63% under the situation of 10mm at thickness, is to be 90% under the situation of 20mm at thickness, is to be 95% under the situation of 40mm at thickness.Can judge from this result, be more than or equal to 5mm and be less than or equal to 40mm, can make fender liner plate 14 have favorable noise and reduce performance by thickness setting with air layer 19.
In addition, consider that dashboard liner plate 14 also brings into play " soundproof effect ".That is to say, the top layer 21 that apparent density is high is difficult to produce the vibration that causes because of noise, therefore can reckon with effect with " sound insulating member " that vibration that inhibition causes by noise propagates, therefore, dashboard liner plate 14 reduces this noise by to the noise performance " soundproof effect " of air as medium.
And dashboard liner plate 14 not only reduces the indoor noise of car that enters vehicle 11, also reduces the external leaks of noise to vehicle 11.That is, dashboard liner plate 14 is also brought into play wantonly at least a kind in aforesaid sound-absorbing effect, effectiveness in vibration suppression and the soundproof effect for noises such as engine noise that produces in the inside of vehicle 11 and motor noise.As mentioned above, reduce the external leaks of noise to vehicle 11 by dashboard liner plate 14, the vehicle 11 with this dashboard liner plate 14 can be made very big contribution to environmental protection.
Form the apparent density of the nonwoven on top layer 21, reduce performance, keep the viewpoint of endurance quality to consider simultaneously well, be preferably set to more than or equal to 0.3g/cm from bringing into play noise well
3And be less than or equal to 0.8g/cm
3The not enough 0.3g/cm of apparent density at nonwoven
3Situation under, possibly can't obtain to be enough to anti-in the sufficient endurance quality that impacts.On the other hand, surpass 0.8g/cm in apparent density
3Situation under, fibre density is too high, possibly can't form can give full play to the unit 25 that noise reduces performance.
The gauge on top layer 21 is preferably in the scope of 2～8mm, more preferably in the scope of 2～6mm, further preferably in the scope of 2～4mm.Under the situation of the not enough 2mm of gauge, the apparent density of the nonwoven on formation top layer 21 is too high, possibly can't bring into play noise well and reduce performance.On the other hand, surpass under the situation of 8mm at gauge, apparent density is low excessively, possibly can't bring into play endurance quality well.
Can give full play to the aspect consideration that noise reduces the unit 25 of performance from forming, the fibre diameter of the 1st fiber 23 is littler than the 2nd fiber 26, the 1st fiber 23 is the principal fibers that form the nonwoven on top layer 21, and the 2nd fiber 26 is the principal fibers that form the nonwoven of internal layer 22.Should " fibre diameter " be the value of the thickness of expression fiber, specifically, represent the maximum of the profile diameter of each fiber 23,26.Fibre diameter by making the 1st fiber 23 is littler than the fibre diameter of the 2nd fiber 26, can form the unit 25 more small than internal layer 22 easily on top layer 21.Like this, even the apparent density on top layer 21 than internal layer 22 height, also can form the sufficient unit 25 that is enough to bring into play sound-absorbing effect on this top layer 21.Therefore, dashboard liner plate 14 can obtain endurance quality and noise reduction performance simultaneously.
From keeping endurance quality well and bring into play the aspect that noise reduces performance well and consider, the fibre diameter of the 1st fiber 23 be preferably set to more than or equal to the fibre diameter of the 2nd fiber 26 50% and be less than or equal to 90%.Under 50% situation of the fibre diameter of fibre diameter less than the 2nd fiber 26 of the 1st fiber 23, the rigidity on top layer 21 descends, and possibly can't obtain to be enough to anti-in the sufficient endurance quality that impacts.On the other hand, surpass at the fibre diameter of the 1st fiber 23 under 90% the situation of fibre diameter of the 2nd fiber 26, be difficult to form the sufficient unit 25 that is enough to bring into play sound-absorbing effect, possibly can't bring into play noise well and reduce performance.
Consider that from the aspect of bringing into play endurance quality well and keep noise to reduce performance well the fibre diameter of the 1st fiber 23 is preferably set to more than or equal to 5 μ m and is less than or equal to 20 μ m.Under the situation of the fibre diameter less than 5 μ m of the 1st fiber 23, owing to reasons such as the 1st fiber 23 are easily broken, the rigidity on top layer 21 descends, and may cause the endurance quality of dashboard liner plate 14 to descend.On the other hand, fibre diameter at the 1st fiber 23 surpasses under the situation of 20 μ m, because be difficult to form space (unit 25) between the 1st fiber 23 that interweaves mutually, or unit 25 is descended so may cause the noise of dashboard liner plate 14 to reduce performance by other the 1st fibers 23 obstructions.
The 1st fiber 23 and the 2nd fiber 26 use the short fiber that is made of synthetic fibers.In the present embodiment, use polyester (specifically, being PETG (PET)) fiber.When in addition, short fiber is included in throwing from beginning just as the fiber (staple fiber) of short fiber formation with by long fibre being cut off the fiber (staple) that forms.Reduce the aspect of manufacturing cost from utilizing used seat epidermis or door-plate epidermis etc. again and consider, the 1st fiber 23 of present embodiment and the 2nd fiber 26 use the waste product (recycling material) that is made of fiber are carried out severing and the staple that forms.
The 3rd fiber 27 uses the short fiber that is made of the polyamide (PA) fiber.This Fypro (being commonly called as nylon fiber) hear resistance, resistance to ag(e)ing, resistance to chemical reagents, fatigue durability are good, can improve the endurance quality of the internal layer 22 of dashboard liner plate 14.In addition, Fypro also can obtain from the waste materials of the air bag on being installed in vehicle 11.That is, when making air bag, produce the leftover pieces of the base cloth that uses as the material of this air bag, air bag separated recovery when vehicle scrapping in addition.By using as the 3rd fiber 27, can reduce the manufacturing cost of dashboard liner plate 14 by cutting off the staple that these leftover pieces or waste product obtain.In addition, the fibre diameter of the 3rd fiber 27 is preferably set to more than or equal to 10 μ m and is less than or equal to 50 μ m.Under the situation of the fibre diameter less than 10 μ m of the 3rd fiber 27, possibly can't improve the endurance quality of dashboard liner plate 14.On the other hand, surpass under the situation of 50 μ m at fibre diameter, unit 25 is difficult to form, and may cause noise to reduce performance and descend.
In addition, constitute the fiber of the core of composite fibre, do not need to have the fusing point lower than the 1st～the 3rd fiber 23,26,27, preferred on the contrary fusing point is higher than these fibers 23,26,27.In the present embodiment, consider that binder fibre 24 uses the composite fibre of core-sheath-type from the aspect that will form unit 25 well.In the composite fibre of this core-sheath-type, shown in Fig. 4 A, keep only surface (sheath portion) fusion under the state of not fusion at core, the sheath portion viscose fibre of fusion.Thereby, can suppress to stop up unit 25 by the adhesive of fusion, can make top layer 21 and internal layer 22 become good eyed structure.
In addition, the fibre diameter of binder fibre 24 is preferably set to more than or equal to 10 μ m and is less than or equal to 50 μ m.Under the situation of the fibre diameter less than 10 μ m of binder fibre 24, may cause the endurance quality of dashboard liner plate 14 to descend.On the other hand, surpass under the situation of 50 μ m at fibre diameter, binder fibre 24 stops up unit 25, may cause noise to reduce performance and descend.
The fusing point of the thermoplastic resin that uses in binder fibre 24, preferably the fusing point than the 1st～the 3rd fiber 23,26,27 is low more than 20 ℃ or 20 ℃.Under the situation of 20 ℃ of the poor less thaies between the fusing point of the fusing point of each fiber 23,26,27 and binder fibre 24, be difficult to only make binder fibre 24 fusions, the binder fibre that may cause fusion stops up unit 25 and noise reduces performance and descends.
The fusing point of the thermoplastic resin that uses in binder fibre 24 is preferably 80～170 ℃, more preferably 100～170 ℃.Under the situation of 80 ℃ of fusing point less thaies, the heat (for example, by the heat of engine generation) that comes from the vehicle body of vehicle 11 can soften binder fibre 24, may cause 14 distortion of dashboard liner plate.On the other hand, surpass under 170 ℃ the situation, be difficult to moulding dashboard liner plate 14, may cause processability to descend at fusing point.
The fibre length of the 1st～the 3rd fiber 23,26,27 and binder fibre 24 is preferably 10～100mm.Under the situation of the not enough 10mm of fibre length, interweaving between the fiber fully to form unit 25, might cause noise to reduce performance and descend.In addition, interweaving between the fiber is insufficient, also may cause the endurance quality of dashboard liner plate 14 to descend.In addition, surpass under the situation of 100mm,, might cause noise to reduce performance and descend owing to apparent density is crossed high reason in fibre length.
Below, the advantage that above-mentioned embodiment has is described.
(1) nonwoven on formation top layer 21 has than the high apparent density of nonwoven that forms internal layer 22.And the 1st fiber 23 has the fibre diameter littler than the 2nd fiber 26.Its result can form the unit 25 that improves rigidity and give full play to sound-absorbing effect on top layer 21.Therefore, have good noise and reduce performance, and have good endurance quality.
(2) the 3rd fiber 27 that is contained in the nonwoven that forms internal layer 22 uses Fypro.Therefore, good characteristic such as the hear resistance that can make fender liner plate 14 have Fypro to have, resistance to ag(e)ing, resistance to chemical reagents, fatigue durability.
(3) apparent density of the nonwoven on formation top layer 21 is set at more than or equal to 0.3g/cm
3And be less than or equal to 0.8g/cm
3Therefore, suppress to cross owing to apparent density the endurance quality decline of the low dashboard liner plate 14 that causes, the noise of the dashboard liner plate 14 that inhibition simultaneously causes owing to apparent density is too high reduces performance and descends.
The fibre diameter of (4) the 1st fibers 23 be set at more than or equal to the fibre diameter of the 2nd fiber 26 50% and be less than or equal to 90%.Therefore, suppress because top layer 21 descends than the endurance quality that internal layer 22 forms the dashboard liner plate 14 that too much unit 25 causes, suppress simultaneously because top layer 21 forms the noise reduction performance decline of the dashboard liner plate 14 that very few unit 25 causes than internal layer 22.
The fibre diameter of (5) the 1st fibers 23 is set at more than or equal to 5 μ m and is less than or equal to 20 μ m.Therefore, the rigidity that suppresses to follow top layer 21 reduces and the endurance quality of dashboard liner plate 14 descends, and suppresses to follow the minimizing of the unit 25 that is formed on the top layer 21 simultaneously and the noise of dashboard liner plate 14 reduces performance and descends.
(6) adhesive uses binder fibre 24.That is,, use the material that forms fibre morphology as the adhesive that is used between the viscose fibre.Therefore, can suppress unit 25 obstructions, can keep the noise of dashboard liner plate 14 to reduce performance well owing to the fusion of adhesive.
(7) between the outer surface 13a of internal layer 22 and wheel proloculum 13, air layer 19 is set.By this air layer 19 is set, because the phase place of noise is offset, the vibration of while by the dashboard liner plate 14 that noise causes is difficult to be transmitted on the vehicle body of vehicle 11, reduces performance so can improve the noise of dashboard liner plate 14 well.
(8) in wheel proloculum 13, can impact continually.In addition, wheel proloculum 13 becomes noises such as hit noise, tyre surface noise, load noise and enters the indoor position of car.Be installed in this dashboard liner plate 14 of taking turns the present embodiment in the proloculum 13, as mentioned above, reduce performance and endurance quality,, can also improve the indoor quiet performance of car so not only protect vehicle 11 vehicle bodies to avoid impacting well because have good noise.
In addition, above-mentioned embodiment also can change as described below and specialize.
The the 1st～the 3rd fiber 23,26,27 not necessarily uses synthetic fibers such as PET fiber or PA fiber, also (for example can use inorfil, glass fibre, ceramic fibre) or natural fiber (for example, cellulose fibres such as cotton or artificial silk, protein fibers such as silk or wool).Perhaps, also can at least 2 kinds in synthetic fibers, inorfil and the natural fiber be mixed.
Exterior component of the present invention is not limited to dashboard liner plate 14, so long as be installed in the body bottom section of vehicle 11, just can be embodied as any parts.For example, also exterior component of the present invention can be embodied as rear lining plate or fuel protective cover in the wheel proloculum that is installed on the rear mudguard that is arranged at vehicle 11.Perhaps, also exterior component of the present invention can be embodied as the bottom baffle of installing in the mode of the vehicle body lower surface that covers vehicle 11.Perhaps, also exterior component of the present invention can be embodied as be installed in the wheel proloculum 13 front edge near cover.
Also can omit air layer 19.Under this situation, the internal layer 22 of dashboard liner plate 14 contacts with the outer surface 13a of wheel proloculum 13.
Adhesive is not limited to described binder fibre 24, so long as each fiber that can bond, can use graininess, Powdered or liquid material.
Can omit the 3rd fiber 27, only form internal layer 22 by the 2nd fiber 26 and binder fibre 24.
As the dashboard liner plate 14 of exterior component, its integral body can not have stepped construction, also can form in the mode that has lit-par-lit structure in its part.
Claims (8)
1. exterior component, it is installed on the outer surface of automobile body bottom, has and the corresponding shape of at least a portion of described body bottom section, it is characterized in that having:
The top layer, it is installed at exterior component under the state on the outer surface of described body bottom section, becomes outermost layer; And
Internal layer, it is installed at exterior component under the state on the outer surface of described body bottom section, is configured between the outer surface of described top layer and described body bottom section,
Described top layer and described internal layer are formed by nonwoven respectively, and this nonwoven is laminar obtaining with a lot of fiberizings,
The nonwoven that forms described top layer is compared with the nonwoven of described internal layer, has high apparent density, has little fibre diameter simultaneously.
2. exterior component according to claim 1 is characterized in that,
The nonwoven that forms described internal layer comprises Fypro.
3. exterior component according to claim 1 is characterized in that,
Form the apparent density of the nonwoven on described top layer, more than or equal to 0.3g/cm
3And be less than or equal to 0.8g/cm
3
4. exterior component according to claim 1 is characterized in that,
Form the fibre diameter of the nonwoven on described top layer, more than or equal to the fibre diameter of the nonwoven that forms described internal layer 50% and be less than or equal to the nonwoven that forms described internal layer fibre diameter 90%.
5. exterior component according to claim 1 is characterized in that,
Form the fibre diameter of the nonwoven on described top layer, more than or equal to 5 μ m and be less than or equal to 20 μ m.
6. exterior component according to claim 1 is characterized in that,
Form the nonwoven of any at least in described top layer and the described internal layer, comprise the adhesive that is used for engaging between the fiber, this adhesive forms fibrous.
7. exterior component according to claim 1 is characterized in that,
Described exterior component forms air layer between described internal layer and described body bottom section.
8. according to each described exterior component in the claim 1 to 7, it is characterized in that,
Described exterior component constitutes as the dashboard liner plate, and described dashboard liner plate covers the outer surface of the wheel proloculum that is arranged at described body bottom section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005064527 | 2005-03-08 | ||
| JP2005064527A JP4507919B2 (en) | 2005-03-08 | 2005-03-08 | Exterior material |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710080175 Division CN100581903C (en) | 2005-03-08 | 2006-03-08 | Exterior component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1830659A CN1830659A (en) | 2006-09-13 |
| CN100475522C true CN100475522C (en) | 2009-04-08 |
Family
ID=36993218
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710080175 Expired - Fee Related CN100581903C (en) | 2005-03-08 | 2006-03-08 | Exterior component |
| CN 200610058153 Expired - Fee Related CN100475522C (en) | 2005-03-08 | 2006-03-08 | Exterior component |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710080175 Expired - Fee Related CN100581903C (en) | 2005-03-08 | 2006-03-08 | Exterior component |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4507919B2 (en) |
| CN (2) | CN100581903C (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5016833B2 (en) * | 2005-03-31 | 2012-09-05 | 豊田合成株式会社 | Exterior material |
| JP2008290686A (en) * | 2007-05-28 | 2008-12-04 | Hayashi Engineering Inc | Opening trim and its manufacturing method |
| WO2009042996A1 (en) | 2007-09-28 | 2009-04-02 | Lydall, Inc. | A molded and shaped acoustical insulating vehicle panel and method of making the same |
| CN102341296B (en) * | 2009-03-24 | 2014-06-11 | 积水化学工业株式会社 | Laminate for vehicular exterior trim, process for producing same, and vehicular exterior trim |
| JP5138000B2 (en) * | 2010-05-18 | 2013-02-06 | 株式会社ヒロタニ | Vehicle fender liner |
| CN102225642A (en) * | 2011-03-28 | 2011-10-26 | 德阳永盛无纺制品有限公司 | Thermosetting friendly-environmental protection wheel house material for automobile |
| BR112015010321B1 (en) * | 2012-11-06 | 2021-05-11 | Hyundai Motor Company | method for manufacturing a highly heat resistant sound absorbing and insulating material; and method for noise reduction of a noise generating device |
| JP6175789B2 (en) * | 2013-02-14 | 2017-08-09 | セイコーエプソン株式会社 | Sound absorber, electronic device |
| CN103434227B (en) * | 2013-09-07 | 2015-07-29 | 浙江华江科技发展有限公司 | A kind of lightweight, high tenacity, high sound-absorbing wheel cover of automobile backplate thermoplastic composite and preparation technology thereof |
| EP2939828A1 (en) * | 2014-04-29 | 2015-11-04 | Autoneum Management AG | Exterior trim part |
| JP6107794B2 (en) * | 2014-11-12 | 2017-04-05 | トヨタ自動車株式会社 | Wheel house structure |
| EP3224035B1 (en) | 2014-11-24 | 2021-03-31 | Tesseract Structural Innovations Inc. | Uniform deceleration unit |
| US11097782B2 (en) | 2014-11-24 | 2021-08-24 | Tesseract Structural Innovations, Inc. | Sill beam uniform deceleration unit |
| US11021120B2 (en) | 2014-11-24 | 2021-06-01 | Tesseract Structural Innovations, Inc. | Uniform deceleration unit |
| KR101704195B1 (en) * | 2015-05-06 | 2017-02-13 | 현대자동차주식회사 | A fibrous component for vehicle exterior and a manufacturing method thereof |
| EP3445616B1 (en) | 2016-04-21 | 2020-12-16 | Tesseract Structural Innovations Inc. | Uniform deceleration unit crash box |
| CN107419435A (en) * | 2017-08-22 | 2017-12-01 | 重庆佩尔哲汽车内饰系统有限公司 | A kind of blanket and preparation method thereof |
| JP7233286B2 (en) * | 2019-03-29 | 2023-03-06 | 林テレンプ株式会社 | VEHICLE EXTERIOR MEMBER AND PRODUCTION METHOD THEREOF |
| RU208606U1 (en) * | 2021-07-27 | 2021-12-28 | Общество с ограниченной ответственностью "НОВЛАЙН" | SPARE WHEEL ORGANIZER FOR CAR TRUNK |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6034539Y2 (en) * | 1980-09-22 | 1985-10-15 | 日本化研株式会社 | Protector for car fender |
| JPS6095372U (en) * | 1983-12-08 | 1985-06-28 | 日産自動車株式会社 | wheel house structure |
| JPS6410442U (en) * | 1987-07-10 | 1989-01-19 | ||
| JP3342817B2 (en) * | 1997-03-04 | 2002-11-11 | カネボウ株式会社 | Sound insulation structure |
| JP3415400B2 (en) * | 1997-08-18 | 2003-06-09 | ユニチカ株式会社 | Sound absorbing material |
| JPH11202873A (en) * | 1998-01-19 | 1999-07-30 | Nissan Motor Co Ltd | Sound insulator |
| JP3945204B2 (en) * | 2001-10-02 | 2007-07-18 | 豊田合成株式会社 | Vehicle exterior material, exterior product using the same, and molding method therefor |
-
2005
- 2005-03-08 JP JP2005064527A patent/JP4507919B2/en not_active Expired - Fee Related
-
2006
- 2006-03-08 CN CN 200710080175 patent/CN100581903C/en not_active Expired - Fee Related
- 2006-03-08 CN CN 200610058153 patent/CN100475522C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006248284A (en) | 2006-09-21 |
| JP4507919B2 (en) | 2010-07-21 |
| CN100581903C (en) | 2010-01-20 |
| CN1830659A (en) | 2006-09-13 |
| CN101032937A (en) | 2007-09-12 |
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Granted publication date: 20090408 Termination date: 20190308 |