KR20160045192A - Noise-reducing wheel for vehicle - Google Patents

Noise-reducing wheel for vehicle Download PDF

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Publication number
KR20160045192A
KR20160045192A KR1020140139879A KR20140139879A KR20160045192A KR 20160045192 A KR20160045192 A KR 20160045192A KR 1020140139879 A KR1020140139879 A KR 1020140139879A KR 20140139879 A KR20140139879 A KR 20140139879A KR 20160045192 A KR20160045192 A KR 20160045192A
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KR
South Korea
Prior art keywords
noise
wheel
rim
vehicle
tire
Prior art date
Application number
KR1020140139879A
Other languages
Korean (ko)
Inventor
권충호
Original Assignee
(주)대한솔루션
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)대한솔루션 filed Critical (주)대한솔루션
Priority to KR1020140139879A priority Critical patent/KR20160045192A/en
Publication of KR20160045192A publication Critical patent/KR20160045192A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/12—Appurtenances, e.g. lining bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/133—Noise

Abstract

An objective of the present invention is to provide a noise-reducing wheel for a vehicle which has a sound-absorbing material on an outer surface of a wheel supporting a tire to distribute and support the weight of a vehicle and a hub portion coming in contact with a rim to block noise produced by coming in contact with a road surface and noise produced in a lower side of the vehicle from transferring into the vehicle through the wheel to improve riding comfort and provide a comfortable indoor space. Specifically, another objective of the present invention is to provide a noise-reducing wheel for a vehicle which has polyurethane foam formed by foaming as a sound absorbing material to use a conventional foaming technique of polyurethane foam to easily manufacture the sound absorbing material and block noise from transferring through the wheel to improve riding comfort and provide a comfortable indoor space. Also, another objective of the present invention is to provide a noise-reducing wheel for a vehicle which uses the polyurethane foam with a density of 200-300 g/m^3 to foam and form the sound absorbing material in a thickness of 3-4 mm to increase a blocking effect of noise entering an indoor space through the tire in comparison to a weight increase.

Description

{NOISE-REDUCING WHEEL FOR VEHICLE}

The present invention relates to an automotive wheel capable of reducing noise, and more particularly, to an automobile wheel capable of reducing noises, and more particularly, to an automobile wheel capable of reducing noise by constituting a sound absorbing material on the entire outer surface of the rim contacting with the tire and on the hub portion contacting the inner surface of the rim, So that noise and vibration transmitted to the vehicle body side can be absorbed by the wheel, thereby enhancing ride comfort.

Generally, a car is equipped with a tire so that the driver can receive the driving force of the engine and can ride on the ground. At this time, the tire is installed on the drive shaft while being mounted on a wheel, and the tire is rotated by the driving force transmitted through the rotation of the drive shaft.

In particular, the wheel is one of the important components that not only supports the load of the vehicle with the tire but also transmits the driving force (or braking force) and the lateral force to the road surface. Patent Document 1 to Patent Document 4 disclose a method of manufacturing a wheel and a wheel that reflect such factors.

Patent Document 1 relates to a method of manufacturing a hybrid metal-composite hybrid vehicle, in which an inner rim is compression-molded, an outer rim of a metal material is joined to the outer rim, And a method of manufacturing a hybrid metal-composite material, which is capable of increasing the bonding strength and durability of the joint by inducing compressive residual stress due to a difference in thermal expansion coefficient between the inner and outer rims.

Patent Document 2 relates to an automotive wheel, in which a wheel base is provided on the periphery of a wheel disk and a wheel flange is provided on the outer side of the wheel base, a bead flange is provided inside the wheel flange, And the wheel flange is fastened to the wheel flange by a fastening screw device. The wheel flange can stably grasp the bead portion of the tire, thereby preventing slippage and preventing accident of the bead portion.

Patent Document 3 relates to a wheel for noise reduction of a vehicle. When the tire rotates while the tire is running, the rubber cylinder acts as a damper for adjusting the airflow by moving up and down in the inner cylindrical hole of the spoke member, It has the function of dispersing and mitigating the force when it becomes bigger or smaller and to reduce noise vibration transmitted from the road surface.

Patent Document 4 relates to an automobile wheel manufacturing method and an automobile wheel manufactured by the method, wherein a rim and a disc member are integrally manufactured by using a car wheel to improve the durability of the automobile wheel and reduce the production cost .

However, existing wheels have the following problems.

(1) Normally, a wheel is required to support the entire load of an automobile with four wheels. Therefore, a material having a predetermined rigidity, for example, a metal material or an aluminum alloy material, is often used.

(2) Such a material has an advantage in securing rigidity, but on the contrary, it is vulnerable to noise and vibration transmitted from the ground through a tire.

(3) In other words, the noise generated when the vehicle travels is mostly due to winds generated around the running vehicle, and also occurs on the contact surface between the tire and the road surface.

(4) As a method of reducing the noise caused by the contact with the road surface, it is most effective to absorb the noise from the contact surface of the tire, which is the epicenter of the noise, but it is practically impossible.

(5) Because of this, the noise caused by the contact between the road surface and the tire is transmitted to the wheels in the order of the wheels and the drive shaft in the order of the tires. As a result, the riding feeling of the automobile is reduced, thereby obstructing a comfortable indoor environment.

(6) On the other hand, in the case of an aluminum alloy used for producing a wheel, such noise is generated. However, in the case of a wheel made of a metal material, noise is more likely to be generated when a foreign substance such as gravel on the road surface is hit .

(7) Accordingly, it is possible to minimize the noise transmitted through the tire to the wheel, or the noise generated when the wind or the like passes through the wheel to minimize the transmission to the vehicle interior through the drive shaft, The development of a wheel was required.

Korea registered patent No. 1198625 (registered on November 1, 2012) Korea registered patent No. 1209086 (registered on November 30, 2012) Korean Registered Patent No. 1301593 (Registered on March 23, 2013) Korean Registered Patent No. 1406498 (Registered on Apr. 2014)

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a sound absorbing member which is configured by a sound absorbing material on the outer surface of a wheel supporting and supporting a tire, The present invention has been made to solve the above problems, and it is an object of the present invention to provide an automobile wheel which can reduce the noises generated by the wheels from being transmitted to the interior of the automobile through the wheels, thereby improving the ride quality and creating a comfortable interior space.

Particularly, the present invention is constituted by foam molding of a polyurethane foam as a sound absorbing material, so that it can be easily manufactured by using a conventional foaming technique of a polyurethane foam, and it is possible to obtain a noise shielding effect transmitted through a wheel, Another object of the present invention is to provide an automobile wheel that can reduce the noise that makes it possible to create a comfortable interior space.

In the present invention, the polyurethane foam is foamed to a thickness of 3 to 4 mm by using a material having a density of 200 to 300 g / m < 3 > so that the noise introduced into the room through the tire is blocked Another object of the present invention is to provide an automobile wheel that can reduce the noise that can increase the effect.

In order to achieve the above object, an automobile wheel according to the present invention for reducing noise may include a rim 110 for supporting a tire T and a rim 110 for mounting the rim 110 on the driving shaft S A sound absorbing material 111 is provided on the entire outer surface of the rim 110 and a sound absorbing material 121 is provided on a portion of the hub 120 contacting the rim 110. [ .

In particular, the sound absorbing material 121 is formed on the entire inner surface of the rim 110.

Further, the sound absorbing materials (111, 121) are characterized in that a polyurethane foam is foam-molded.

Finally, the polyurethane foam has a density of 200 to 300 g / m 3 and a thickness of 3 to 4 mm.

The automotive wheel according to the present invention has the following effects.

(1) A sound absorbing material is formed on the outer surface of the rim of the wheel in contact with the tire and the hub portion in contact with the ribs, thereby absorbing the noise transmitted to the drive shaft and the like through the tire while absorbing the ride. can do.

(2) In particular, the rim of the wheel is a component which is mounted between the tire and the drive shaft in close contact with the tire, and when the sound absorbing material is mounted on the rim portion, the noise and vibration transmitted through the tire can be most effectively removed Effect can be expected.

(3) The sound absorbing effect can be further enhanced by attaching a sound absorbing material to the connecting portion of the hub (the connecting portion of the rim and the hub) connecting the rim and the drive shaft to connect the rim and the drive shaft.

(4) In addition, by making the polyurethane foam foamable as the sound absorbing material and constructing a sound absorbing material, it is possible to simultaneously block noise and vibration transmitted through the tire by a polyurethane foam excellent in sound absorption effect, Can easily and quickly be formed.

(5) In particular, foam molding of polyurethane foam can be easily produced and used as a conventional technique which can be easily understood by a person skilled in the art and which can reduce the noise according to the present invention.

(6) And, the polyurethane foam has a sound absorption performance depending on the density and the thickness. The polyurethane foam is foam-molded with the density and thickness according to the noise characteristics transmitted to the wheel through the tire according to the vehicle type, It is possible to select a sound absorbing material suitable for the noise characteristics depending on the weight of the vehicle and the like.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state where a wheel according to the present invention is mounted on an ordinary automobile. FIG.
FIG. 2 is a cross-sectional view of a wheel in order to show an example in which a sound absorbing material is applied to a wheel according to the present invention. FIG.
3 is a graph showing a sound pressure (% Al) measured at the front passenger seat when the wheel according to the present invention is mounted on a vehicle and traveling at a constant speed (100 km / h).
FIG. 4 is a graph showing the sound pressure (% Al) measured at the center of the rear seat when the wheel according to the present invention is mounted on a vehicle and traveling at a constant speed (100 km / h).

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

(Configuration)

1 and 2, the automotive wheel 100 according to the present invention includes a rim 110 formed in a cylindrical shape, a rim 110 formed inside the rim 110, The outer surface of the rim 110 in contact with the tire T and the hub 120 in contact with the rim 110 are formed in the rim 110, The noise absorbing members 111 and 121 are configured to reduce noise and vibration transmitted from the tire T.

Hereinafter, this configuration will be described in more detail as follows.

The wheel 100 includes a rim 110 for supporting the tire T substantially as shown in Figs. 1 and 2 and a rim 110 connected to the rim 110 for connecting the wheel 100 to the drive shaft S And a hub 120 for receiving the data. In the drawing, reference numeral " S "denotes a drive shaft for transmitting a drive force generated in the engine to the tire T, and reference numeral" B "denotes a drive shaft for selectively restraining the drive shaft S And a conventional brake device.

2, the rim 110 is a cylinder having a predetermined thickness so as to be able to close between the open portion of the center of the tire T, that is, the beads B on both sides of the tire T, . At this time, the rim 110 is formed by bending the surface of the cylinder so as to have its own structural rigidity, and the cylinder 110 is formed by connecting several cylinders having different diameters together.

In the preferred embodiment of the present invention, the rim 110 is a component that is in direct contact with the tire T. In the present invention, the rim 110 is formed on the outer surface of the rim 110, (111). The noise absorbing member 111 is constructed between the tire T and the rim 110 which are in contact with the road surface to generate vibration and noise so that noise and vibration transmitted from the tire T to the rim 110 can be absorbed by the sound absorbing material 111).

Particularly, in the preferred embodiment of the present invention, the sound absorbing material 111 may be any material made of a material having a sound absorbing performance in the automobile industry, but it is preferable to use a polyurethane foam. This is because not only the sound absorption performance is high but also a certain degree of sound insulation performance is obtained. This is because the polyurethane foam can be formed in the rim 110 as a rotating body by foaming or the like and can be stably attached, and the absorbing sound performance is excellent as compared with the weight increase.

Further, in a preferred embodiment of the present invention, it is preferable that the polyurethane foam has a density of 200 to 300 g / m < 3 > and is foam-molded to a thickness of 3 to 4 mm. This is to effectively block the noise and vibration transmitted through the tire T while minimizing the weight increase of the polyurethane foam.

2, the hub 120 is manufactured by a conventional technique that can be mounted inside the rim 110 to connect the wheel 100 to the drive shaft S. [ At this time, the hub 120 is installed in contact with the rim 110 by fusing or the like. Accordingly, in the present invention, the sound absorbing material 121 is further formed on the hub 120 in contact with the rim 110 to reduce the noise transmitted from the tire T.

In the embodiment of the present invention, the sound absorbing material 121 may be formed on the inner surface of the rim 110 as well as the inner surface of the hub 120 as well as the portion of the hub 120 contacting the rim 110. This is because the position of the hub 120 varies depending on the shape of the rim 110 and the manufacturing method, so that the sound absorbing member 121 is partially or wholly formed in consideration of this.

That is, the hub 120 is fixed to the drive shaft to transmit the rotational force of the engine to the tire T. At this time, the hub 120 is formed so as to be positioned (zero offset) to the center of the width of the rim 110, or to be positioned (positive offset) outside the width center, or to be positioned (negative offset) Accordingly, the distances between the hubs 120, that is, the wheel distances are changed, so that the noise generation is different even for the wheels of the same shape.

Accordingly, the present invention selectively forms a sound absorbing material 121 entirely or partially on the inner surface of the rim 110 in order to appropriately respond to the thus-changed noise.

Although the sound absorbing material 111 is formed only on the entire rim 110 and a part of the hub 120 in the embodiment of the present invention, You may. At this time, the hub 120 may be formed on both sides, but it is preferable that the hub 120 is formed only on the inner side since the one side is always exposed to the outside of the automobile.

The wheel according to the present invention can obtain a sound-absorbing effect through the sound-absorbing material 111, thereby enhancing a pleasant indoor environment and ride comfort.

(Sound pressure test)

According to the present invention, a wheel (example) in which a polyurethane foam is foamed on the outer surface of a rim contacting with a tire and a part of a hub in contact with the rim, and a comparative example in which a sound absorbing material is not formed, The results of the conducted sound pressure test are as follows.

At this time, the sound pressure measurement was performed while the vehicle was traveling at a constant speed of 100 km / h, and the sound pressure graph was measured in the passenger seat (FIG. 3) and the center of the rear seat (FIG. In the graph, the horizontal axis represents the frequency and the vertical axis represents the sound pressure (% Al), the red line represents the embodiment, and the black line represents the comparative example.

As shown in Fig. 3, the sound pressure in the passenger seat is 77.79 (% Al) in the example of the red line, and 76.59 (% Al) in the comparative example is higher than that in the comparative example of the black line 1.20 (% Al).

As shown in Fig. 4, the sound pressure in the center of the rear seat is higher than that in the black line in comparison with the comparative example of the black line. Particularly, the average sound pressure is 74.91% Al) by about 1.09 (% Al).

100: Wheel
110: rim
111: Sound absorbing material
120: Hub

Claims (4)

An automotive wheel comprising a rim (110) for supporting a tire (T) and a hub (120) for mounting the rim (110) inside the rim (110)
A sound absorbing material (111) is provided on the entire outer surface of the rim (110)
Wherein the hub (120) is provided with a sound absorbing material (121) at a portion in contact with the rim (110).
The method according to claim 1,
Wherein the sound absorbing material (121) is formed on the entire inner surface of the rim (110).
3. The method according to claim 1 or 2,
Wherein the sound absorbing material (111, 121) is formed by foam molding of a polyurethane foam.
The method of claim 3,
Wherein the polyurethane foam has a density of 200 to 300 g / m 3 and a thickness of 3 to 4 mm.
KR1020140139879A 2014-10-16 2014-10-16 Noise-reducing wheel for vehicle KR20160045192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140139879A KR20160045192A (en) 2014-10-16 2014-10-16 Noise-reducing wheel for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140139879A KR20160045192A (en) 2014-10-16 2014-10-16 Noise-reducing wheel for vehicle

Publications (1)

Publication Number Publication Date
KR20160045192A true KR20160045192A (en) 2016-04-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101198625B1 (en) 2010-08-18 2012-11-07 중앙대학교 산학협력단 Manufacturing method of the metal composite hybrid wheel for vehicles
KR101209086B1 (en) 2010-12-08 2012-12-06 한국타이어월드와이드 주식회사 Wheel for Vehicle
KR101301593B1 (en) 2011-09-19 2013-08-29 한국타이어 주식회사 Wheel for noise reduction of vehicle
KR101406498B1 (en) 2012-07-04 2014-06-12 주식회사 포스코 Manufacturing method of wheel for vehicle and wheel for vehicle formed therefrom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101198625B1 (en) 2010-08-18 2012-11-07 중앙대학교 산학협력단 Manufacturing method of the metal composite hybrid wheel for vehicles
KR101209086B1 (en) 2010-12-08 2012-12-06 한국타이어월드와이드 주식회사 Wheel for Vehicle
KR101301593B1 (en) 2011-09-19 2013-08-29 한국타이어 주식회사 Wheel for noise reduction of vehicle
KR101406498B1 (en) 2012-07-04 2014-06-12 주식회사 포스코 Manufacturing method of wheel for vehicle and wheel for vehicle formed therefrom

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