CN218400051U - Two-piece joined hollow sound-absorbing wheel for vehicle - Google Patents
Two-piece joined hollow sound-absorbing wheel for vehicle Download PDFInfo
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- CN218400051U CN218400051U CN202222155225.7U CN202222155225U CN218400051U CN 218400051 U CN218400051 U CN 218400051U CN 202222155225 U CN202222155225 U CN 202222155225U CN 218400051 U CN218400051 U CN 218400051U
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Abstract
The utility model discloses a two joint formula hollows for vehicle inhale sound wheel includes: a spoke formed with a first connection portion; and a rim engaged with the spoke to form a second connection part connected with the first connection part, wherein a resonance space and a valve mounting part are formed between the second connection part and the first connection part, and a through hole communicated with the outside is formed in the resonance space to relieve road noise in a preset frequency range. Furthermore, the present invention provides a method of manufacturing a vehicle wheel, including: a step (a) of molding a spoke having a first connection portion formed thereon; a step (b) of molding the rim on which the second connection portion is formed; and (c) engaging the spoke with the rim to form a resonance space and a valve mounting portion between the first connecting portion and the second connecting portion, the resonance space having a through hole communicating with the outside.
Description
Technical Field
The present invention relates to a vehicle wheel, and more particularly, to a vehicle wheel in which a spoke and a rim are joined to each other so as to form a resonance space and a valve mounting portion.
Background
Generally, a vehicle generates noise for various reasons and transmits the noise into the vehicle. The largest part of the noise is road noise generated by the influence of the road surface, and the noise is classified into road noise, booming noise, and the like.
In addition, the road noise is often generated by a ground surface, a tire, a wheel, a suspension, and the like. Also, such road noise causes great discomfort to the driver, and methods for reducing such noise have been continuously studied.
Accordingly, various technologies have been developed, such as a technology for improving the strength of a suspension, a technology for using a damper for reducing the vibration of a vehicle, and a technology for using a sound absorbing material, but there is a problem that the noise reduction effect is not large as compared with the manufacturing cost of these devices, and the manufacturing cost of a vehicle is greatly increased.
Therefore, a method for solving the problems as described above is required.
Documents of the prior art
Patent document
Patent document 0001: korean laid-open patent No. 10-2012-0131583
SUMMERY OF THE UTILITY MODEL
The utility model is used for solve as above the problem that exists among the prior art, the utility model aims to provide a can effectively reduce road surface noise's wheel for vehicle and manufacturing method under the condition that does not increase manufacturing cost by a wide margin.
The object of the present invention is not limited to the above-mentioned object, and other objects not mentioned can be clearly understood by those skilled in the art to which the present invention pertains from the following description.
The utility model discloses a two joint type vehicle are with cavity sound absorption wheel includes for the vehicle for realizing above-mentioned purpose: a spoke formed with a first connection portion; and a rim engaged with the spoke to form a second connection part connected with the first connection part, wherein a resonance space and a valve mounting part are formed between the second connection part and the first connection part, and a through hole communicated with the outside is formed in the resonance space to relieve road noise in a preset frequency range.
Further, the first connection portion and the second connection portion are formed so as to be recessed in a partial region of the periphery thereof, and a resonance space can be formed as they are connected to each other.
The resonance space may be divided into a plurality of parts.
Further, a partition wall may be formed between the plurality of resonance spaces, the partition wall being in a bonded state by bringing the first connection portion and the second connection portion into contact with each other.
And, the resonance space can change the preset frequency range according to the volume.
Further, the resonance space may change a predetermined frequency range according to the area or diameter of the passage hole.
And the resonance space can change the preset frequency range according to the relative position of the through hole.
In order to achieve the above object, a method for manufacturing a hollow sound absorbing wheel for a two-piece bonded vehicle according to the present invention includes: a step (a) of molding a spoke having a first connection portion formed thereon; molding the rim with the second connecting part; and (c) engaging the spoke with the rim to form a resonance space and a valve mounting portion between the first connecting portion and the second connecting portion, the resonance space having a through hole communicating with the outside.
In the step (c), the spoke and the rim may be joined by friction stir welding.
In the step (c), the step of bonding the spoke and the rim may be performed.
Further, the method may further include a step (d) of attaching a valve to the valve attaching portion after the step (c).
The hollow sound-absorbing wheel for a two-piece joined vehicle according to the present invention and the manufacturing method thereof for achieving the above object have the following effects.
First, road noise can be effectively reduced by a resonance space formed between the spokes and the rim.
Second, since the disc and the rim are joined to each other in two pieces, a separate process for forming a resonance space does not need to be added.
Third, the road noise of a desired frequency can be reduced by changing the volume of the resonance space or the area of the passage hole or the like.
Fourthly, as the resonance space is formed, the weight of the wheel can be reduced.
The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned are clearly understood by a person skilled in the art through the description of the present invention in the claims.
Drawings
Fig. 1 is a cross-sectional view showing a state where a spoke and a rim are separated in a vehicle wheel according to a first embodiment of the present invention.
Fig. 2 is a cross-sectional view showing a state in which a spoke and a rim are engaged in a vehicle wheel according to a first embodiment of the present invention.
Fig. 3 is a cross-sectional view showing a form of a resonance space in a vehicle wheel according to a first embodiment of the present invention.
Fig. 4 is a cross-sectional view showing a form of a resonance space in a vehicle wheel according to a second embodiment of the present invention.
Fig. 5 is a sectional view showing the form of a through hole in a vehicle wheel according to a third embodiment of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention that can specifically achieve the objects of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same structures are given the same names and the same reference numerals, and additional description thereof will be omitted.
Fig. 1 is a sectional view showing a state where a spoke 10 and a rim 20 are separated from each other in a vehicle wheel according to a first embodiment of the present invention, and fig. 2 is a sectional view showing a state where the spoke 10 and the rim 20 are joined to each other in the vehicle wheel according to the first embodiment of the present invention.
As shown in fig. 1 and 2, a vehicle wheel according to a first embodiment of the present invention has a structure in which a spoke 10 and a rim 20, which are two pieces separated from each other, are joined together.
Specifically, the disc 10 includes a first connecting portion 12 formed along the periphery, and the rim 20 includes a second connecting portion 22 connected to the first connecting portion 12. A resonance space 30 and a valve mounting portion, which will be described later, are formed between the first connecting portion 12 and the second connecting portion 22.
In particular, in the present embodiment, the first connection portion 12 and the second connection portion 22 may be formed by recessing a partial region of the periphery thereof, and the resonance space 30 may be formed by connecting them. In the remaining area not recessed, a partition wall for partitioning the resonance space 30 or the valve mounting portion is formed. This will be explained in the following.
On the other hand, the vehicle wheel as described above will be manufactured by the following steps.
First, step (a) for molding the wheel disc 10 formed with the first connecting portions 12 and step (b) for molding the rim 20 formed with the second connecting portions 22 will be performed. In this case, the wheel disc 10 and the rim 20 may be made of a metal material such as aluminum or magnesium, or carbon fiber.
In the above step (a), more specifically, the metal is melted and the gate is cut after low-pressure casting thereof, and the machining step is performed after the heat treatment, which may be performed sequentially.
The low-pressure casting is a side-gate casting method in which a molten metal is poured from the side, and is produced by a side-gate casting method in which a molten metal is poured through gates located on both sides of wheel disc 10 when viewed in plan view.
In the processing step, the shape required for friction stir welding with the rim 20 is processed, and the shape of the first connection portion 12 and the periphery thereof is processed.
In the above step (b), more specifically, the metal is melted and the gate is cut after low pressure casting thereof, and after the PRE (PRE) working and the flow spinning forming process are performed, the working step is performed after the heat treatment, and these steps may be sequentially performed.
In this case, as in step (a), the molten solution is injected through gates located on both sides of the rim 20 also in the low-pressure casting process in step (b). In addition, in the same manner as in step (a), a processing step of the second connection portion 22 required for friction stir welding is also performed in the processing step.
In the flow-spinning forming step, the extending portion 21 extending from the second connecting portion 22 of the rim 20 is formed by a flow-spinning forming process using a forming device.
After the steps (a) and (b) described above, step (c) of forming a resonance space 30 and a valve attaching portion between the first connecting portion 12 and the second connecting portion 22 by joining the spoke 10 and the rim 20 and forming a passage hole communicating with the outside in the resonance space 30 is performed.
In this step, the resonance space 30 and the valve nozzle mounting portion are formed inside by joining the first connecting portion 12 and the second connecting portion 22, which may be achieved by friction stir welding. Further, the bonding step may be performed between the disc 10 and the rim 20. In this way, the sealing property can be further improved.
Further, after the step (c), the step (d) of attaching the valve to the valve attaching portion may be further performed. A through hole for passing the valve through may be formed in the valve mounting portion, and the step (d) of forming the through hole and mounting the valve to the through hole may be performed.
Hereinafter, the resonance space formed by the vehicle wheel according to the present invention will be described in more detail.
Fig. 3 is a cross-sectional view showing the form of resonance spaces 30a, 30b, 30c, and 30d in a vehicle wheel according to a first embodiment of the present invention.
As shown in fig. 3, the vehicle wheel according to the first embodiment of the present invention forms resonance spaces 30a, 30b, 30c, and 30d along the peripheries of wheel disc 10 and rim 20. In particular, in the present embodiment, the resonance spaces 30a, 30b, 30c, and 30d are plural, more specifically, divided into four spaces, and partition walls 34 in which the first connection portions and the second connection portions are in contact with each other and joined are formed between the plural resonance spaces 30a, 30b, 30c, and 30d. As described above, the partition wall 34 may be joined by friction stir welding, and a bonding step may be performed.
Hereinafter, for convenience of description, the plurality of resonance spaces will be referred to as a first resonance space 30a, a second resonance space 30b, a third resonance space 30c, and a fourth resonance space 30d, respectively.
In the present embodiment, the first resonance space 30a, the second resonance space 30b, the third resonance space 30c, and the fourth resonance space 30d are formed by dividing the remaining area of the entire circumferential length of the wheel disc 10 and the rim 20 excluding the length occupied by the door trim mounting portion 32 into four areas.
Further, passage holes 36a, 36b, 36c, and 36d communicating with the outside are formed in the respective resonance spaces 30a, 30b, 30c, and 30d, respectively, and the respective resonance spaces 30a, 30b, 30c, and 30d thereby form a Helmholtz Resonator (Helmholtz Resonator) structure.
Therefore, in the vehicle wheel according to the present invention, noise generated from the road surface during the traveling of the vehicle is transmitted to the inside of the resonance spaces 30a, 30b, 30c, and 30d through the through holes 36a, 36b, 36c, and 36d, and phase shift for a specific frequency is generated in the resonance spaces 30a, 30b, 30c, and 30d, and thus the noise is eliminated in the resonance spaces 30a, 30b, 30c, and 30d.
On the other hand, in the present embodiment, the lengths d of the first resonance space 30a, the second resonance space 30b, the third resonance space 30c, and the fourth resonance space 30d are set to be equal to each other a 、d b 、d c 、d d The same, road noise with the same frequency range can be reduced.
Other embodiments of the present invention will be described below.
Fig. 4 is a cross-sectional view showing resonance spaces 30a, 30b, 30c, and 30d in a vehicle wheel according to a second embodiment of the present invention.
In a second embodiment of the present invention shown in fig. 4, the lengths d of the first resonance space 30a, the second resonance space 30b, the third resonance space 30c, and the fourth resonance space 30d a 、d b 、d c 、d d Are different from each other. Therefore, in the present embodiment, the first resonance space 30a, the second resonance space 30b, the third resonance space 30c, and the fourth resonance space 30d can cancel road surface noises in different frequency ranges.
As described above, the frequency range of the road noise to be reduced can be selected by changing the volumes of the resonance spaces 30a, 30b, 30c, and 30d.
In the present embodiment, the through holes 36a, 36b, 36c, and 36d are located at different positions relative to the resonance spaces 30a, 30b, 30c, and 30d. In this way, the first resonance space 30a, the second resonance space 30b, the third resonance space 30c, and the fourth resonance space 30d can cancel road surface noise in different frequency ranges in the same manner.
Fig. 5 is a sectional view showing the form of the passage holes 36a, 36b, 36c, and 36d in the vehicle wheel according to the third embodiment of the present invention.
In the third embodiment of the present invention shown in fig. 5, the positions of the resonance spaces 30a, 30b, 30c, and 30d and the passage holes 36a, 36b, 36c, and 36d are the same as those of the second embodiment, but the difference is that the areas of the passage holes 36a, 36b, 36c, and 36d are different from each other.
That is, in the present embodiment, the diameter g of the passage holes 36a, 36b, 36c, 36d is set to be larger than the diameter g of the passage holes 36a, 36b, 36c, 36d a 、g b 、g c 、g d Since they are different from each other, the first resonance space 30a, the second resonance space 30b, the third resonance space 30c, and the fourth resonance space 30d can cancel road surfaces in different frequency rangesNoise.
As described above, the resonance spaces 30a, 30b, 30c, 30d described above can also change the preset frequency range according to the area or diameter of the passage holes 36a, 36b, 36c, 36 d.
In the above, it is understood that the preferred embodiments of the present invention can be embodied in other specific forms without departing from the spirit or scope of the present invention, which will be apparent to those skilled in the art. Therefore, the above embodiments should be understood as illustrative rather than restrictive, and the invention may be modified within the scope and equivalents of the appended claims without being limited to the foregoing description.
Claims (7)
1. A two-piece bonded hollow sound-absorbing wheel for a vehicle,
the method comprises the following steps:
a spoke formed with a first connection portion; and
a rim which is joined to the spoke and has a second connection portion connected to the first connection portion, and which has a resonance space and a valve mounting portion formed between the second connection portion and the first connection portion,
through holes communicated with the outside are formed in the resonance space so as to relieve road noise in a preset frequency range.
2. The two-piece vehicle hollow sound absorbing wheel according to claim 1, wherein the first connection portion and the second connection portion are formed so as to be recessed in a partial region of the periphery thereof, and a resonance space is formed as they are connected to each other.
3. The two-piece vehicle hollow sound absorbing wheel according to claim 1, wherein the resonance space is divided into a plurality of parts.
4. The two-piece joined hollow sound-absorbing wheel for a vehicle according to claim 3, wherein a partition wall is formed between the plurality of resonance spaces, the partition wall being bonded to the resonance spaces by bringing the first connection portion and the second connection portion into contact with each other.
5. The two-piece hollow sound absorbing wheel for a vehicle according to claim 1, wherein the resonance space changes a predetermined frequency range according to a volume.
6. The two-piece hollow sound absorbing wheel for a vehicle according to claim 1, wherein the resonance space changes a predetermined frequency range according to an area or a diameter of the through hole.
7. The two-piece joined hollow sound-absorbing wheel for a vehicle according to claim 1, wherein the resonance space changes the predetermined frequency range according to the relative position of the through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222155225.7U CN218400051U (en) | 2022-08-16 | 2022-08-16 | Two-piece joined hollow sound-absorbing wheel for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222155225.7U CN218400051U (en) | 2022-08-16 | 2022-08-16 | Two-piece joined hollow sound-absorbing wheel for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218400051U true CN218400051U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222155225.7U Active CN218400051U (en) | 2022-08-16 | 2022-08-16 | Two-piece joined hollow sound-absorbing wheel for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218400051U (en) |
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2022
- 2022-08-16 CN CN202222155225.7U patent/CN218400051U/en active Active
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