CA2278719A1 - Wheel noise reduction - Google Patents
Wheel noise reduction Download PDFInfo
- Publication number
- CA2278719A1 CA2278719A1 CA002278719A CA2278719A CA2278719A1 CA 2278719 A1 CA2278719 A1 CA 2278719A1 CA 002278719 A CA002278719 A CA 002278719A CA 2278719 A CA2278719 A CA 2278719A CA 2278719 A1 CA2278719 A1 CA 2278719A1
- Authority
- CA
- Canada
- Prior art keywords
- wheel
- barrier
- rim
- isolation barrier
- noise
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
- B60B3/04—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding
- B60B3/041—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding characterised by the attachment of rim to wheel disc
- B60B3/044—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding characterised by the attachment of rim to wheel disc characterised by cross-sectional details of the attachment, e.g. the profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
- B60B3/04—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding
- B60B3/041—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding characterised by the attachment of rim to wheel disc
- B60B3/045—Disc wheels, i.e. wheels with load-supporting disc body with a single disc body not integral with rim, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding characterised by the attachment of rim to wheel disc characterised by the attachment portions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
- B60B3/06—Disc wheels, i.e. wheels with load-supporting disc body formed by casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
- B60B9/02—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims
- B60B9/10—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims of rubber or the like
- B60B9/12—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims of rubber or the like in the form of sleeves or rings concentric with the wheel axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Braking Arrangements (AREA)
Abstract
A noise barrier in a road wheel assembly is described: the barrier can be made from any suitable noise absorbing/deadening material manufactured to exacting safety specifications as far as width, thickness and retention. A solid synthetic or natural rubber or plastics material which is an extremely poor medium for transmitting vibrations can be used. For example a specially prepared durable rubber extruded and vulcanised between two steel or other metal rings or plates situated between a road wheel rim and a wheel hub assembly is suitable. The invention can be incorporated into a new wheel or as a modification to an existing wheel.
Description
WHEEL NOISE REDUCTION
FIELD OF INVENTION
The invention relates to wheel noise reduction.
BACKGROUND
At present with modern vehicles which can travel at relatively high speeds over modern roads with smooth and quietly running engines, one of the few remaining problems to be overcome is the question of road noise.
Road noise is understood to be created by vibrations transmitted from road surface to the cab of a motor vehicle. Varying different types and quality of road surface create different levels of vibration and noise which ideally should be reduced if not eliminated.
The applicant undefstands that the source of this noise is created by the tyre acting in much the same fashion as a stereo speaker cone when it vibrates in and out.
The applicant considers the action of a vehicle tyre moving over each and every bump on a road surface causes the same effect and sound. These impact movements of the tyre surface invade the internal pressurised air space of the tyre to be converted into a myriad of sound waves amplified into shock waves. by the high pressure of the inflated tyre. The magnitude of these shock waves are increased or decreased according to vehicle speed and the condition of the road. The shock waves hammer and ricochet with considerable force around the interior surface of the tyre and the exposed areas of a wheel rim which is normally constructed from steel or another metal alloy.
The vibrations are then transmitted through the wheel rims, discs, wheel bearings and suspension culminating in an irritating noise in the vehicle cab. The irritating noise not only spoils radio listening but can affect people susceptible to headaches.
Received 04 February 1999 One attempt to eliminate this problem is for car manufacturers to heavily pad the interior body panels. This adds markedly to manufacturing cost.
An object of the present invention is to incorporate a simple modification which will substantially reduce, if not eliminate road noise or to reduce road noise to a more acceptable level.
Further objects and advantages of the invention will become apparent from the following description which is given by way of example only.
DISCLOSURE OF THE INVENTION
According to a broadest aspect of the invention there is provided a noise barrier in a road wheel assembly.
The barrier can be made from any suitable noise absorbing/deadening material manufactured to exacting safety specifications as far as width, thickness and retention are required. A solid synthetic or natural rubber or plastics material which is an extremely poor medium for transmitting vibrations can be used.
Preferably a specially prepared durable rubber extruded and vulcanised between two steel or other metal rings or plates which may constitute a road wheel rim and a wheel hub assembly is suitable.
The invention can be incorporated into a new wheel or as a modification to an existing wheel which should in no way affect the balance of the wheel. In fact wheel balance may be improved due to a self centring effect created by the noise barrier material.
AME~aCLi~ SWEET' °~~.,~l4iJ
FIELD OF INVENTION
The invention relates to wheel noise reduction.
BACKGROUND
At present with modern vehicles which can travel at relatively high speeds over modern roads with smooth and quietly running engines, one of the few remaining problems to be overcome is the question of road noise.
Road noise is understood to be created by vibrations transmitted from road surface to the cab of a motor vehicle. Varying different types and quality of road surface create different levels of vibration and noise which ideally should be reduced if not eliminated.
The applicant undefstands that the source of this noise is created by the tyre acting in much the same fashion as a stereo speaker cone when it vibrates in and out.
The applicant considers the action of a vehicle tyre moving over each and every bump on a road surface causes the same effect and sound. These impact movements of the tyre surface invade the internal pressurised air space of the tyre to be converted into a myriad of sound waves amplified into shock waves. by the high pressure of the inflated tyre. The magnitude of these shock waves are increased or decreased according to vehicle speed and the condition of the road. The shock waves hammer and ricochet with considerable force around the interior surface of the tyre and the exposed areas of a wheel rim which is normally constructed from steel or another metal alloy.
The vibrations are then transmitted through the wheel rims, discs, wheel bearings and suspension culminating in an irritating noise in the vehicle cab. The irritating noise not only spoils radio listening but can affect people susceptible to headaches.
Received 04 February 1999 One attempt to eliminate this problem is for car manufacturers to heavily pad the interior body panels. This adds markedly to manufacturing cost.
An object of the present invention is to incorporate a simple modification which will substantially reduce, if not eliminate road noise or to reduce road noise to a more acceptable level.
Further objects and advantages of the invention will become apparent from the following description which is given by way of example only.
DISCLOSURE OF THE INVENTION
According to a broadest aspect of the invention there is provided a noise barrier in a road wheel assembly.
The barrier can be made from any suitable noise absorbing/deadening material manufactured to exacting safety specifications as far as width, thickness and retention are required. A solid synthetic or natural rubber or plastics material which is an extremely poor medium for transmitting vibrations can be used.
Preferably a specially prepared durable rubber extruded and vulcanised between two steel or other metal rings or plates which may constitute a road wheel rim and a wheel hub assembly is suitable.
The invention can be incorporated into a new wheel or as a modification to an existing wheel which should in no way affect the balance of the wheel. In fact wheel balance may be improved due to a self centring effect created by the noise barrier material.
AME~aCLi~ SWEET' °~~.,~l4iJ
Examples of the invention will now be described with reference to the accompanying drawings:
DESCRIPTION OF THE DRAWINGS
Figure 1 shows diagrammatically a cross-section through part of an example of wheel assembly incorporating the present invention;
Figure 2 shows a cross-section through an alternative construction of wheel assembly incorporating the present invention;
Figure 3 shows a part section through yet another alternative construction of wheel assembly showing the actual size of a 15 inch wheel rim incorporating the present invention; and Fi4ure 4 shows a part section through a construction of wheel assembly for a cast aluminium alloy wheel.
DESCRIPTION OF THE PREFERRED EXAMPLES
All the examples of the invention will be described with reference to a standard wheel assembly for a vehicle, the wheel assembly has a tyre 6 to be mounted relative to a wheel bearing 1 . The wheel bearing 1 is linked in known manner via a metal disc 2 portion of the wheel assembly which would normally have associated therewith an annular rim 3.
In the first example shown in Figure 1 the annular rim 3 has sandwiched between it and a wheel rim 5 an annular strip of durable natural/synthetic rubber 4. The rubber strip 4 is vulcanised to both the wheel rim 5 and the rim 3. The tyre 6 is fitted in the normal way to the wheel rim 5.
In the second example shown in Figure 2 the wheel is constructed with two discs which are joined together by a vulcanised rubber plate 4.
In the third example in Figure 3 a part section through a 15 inch wheel is shown.
The wheel is constructed from a 15 inch wheel rim 5 and a modified rim 3. The rim 3 is a cut-down and compressed 15 inch rim with both side walls (not shown) originally attached at 8 and 9 removed. The rim 3 is welded to a ledge section 10 on the periphery of the disc 2.
In the fourth example shown in Figure 4 the wheel is constructed from two parts, namely a central hub section 11 and a wheel rim 12. The hub section 1 1 has a profile suitable for attachment to a wheel hub (not shown) by way of studs which are aligned with holes (not shown) on centre lines 13 (only one of which can be seen) in disc portion 14.
The wheel rim 12 is profiled to have a pneumatic tyre (not shown) fitted and the external profile may of any suitable construction and shape which is cast from the same or similar metal alloy material as the section 11 . The section 11 and rim 12 are held together by rubber 15 which is vulcanised to the parts.
The wheel assembly is formed by placing the hub section 1 1 and wheel rim 12 in position in or on a jig/mechanism so that under heat and pressure the rubber is forced into the space therebetween to be vulcanised to the surfaces 16 and 17 respectively of the hub section 1 1 and wheel rim 12.
T _.._.~~_.._... .
DESCRIPTION OF THE DRAWINGS
Figure 1 shows diagrammatically a cross-section through part of an example of wheel assembly incorporating the present invention;
Figure 2 shows a cross-section through an alternative construction of wheel assembly incorporating the present invention;
Figure 3 shows a part section through yet another alternative construction of wheel assembly showing the actual size of a 15 inch wheel rim incorporating the present invention; and Fi4ure 4 shows a part section through a construction of wheel assembly for a cast aluminium alloy wheel.
DESCRIPTION OF THE PREFERRED EXAMPLES
All the examples of the invention will be described with reference to a standard wheel assembly for a vehicle, the wheel assembly has a tyre 6 to be mounted relative to a wheel bearing 1 . The wheel bearing 1 is linked in known manner via a metal disc 2 portion of the wheel assembly which would normally have associated therewith an annular rim 3.
In the first example shown in Figure 1 the annular rim 3 has sandwiched between it and a wheel rim 5 an annular strip of durable natural/synthetic rubber 4. The rubber strip 4 is vulcanised to both the wheel rim 5 and the rim 3. The tyre 6 is fitted in the normal way to the wheel rim 5.
In the second example shown in Figure 2 the wheel is constructed with two discs which are joined together by a vulcanised rubber plate 4.
In the third example in Figure 3 a part section through a 15 inch wheel is shown.
The wheel is constructed from a 15 inch wheel rim 5 and a modified rim 3. The rim 3 is a cut-down and compressed 15 inch rim with both side walls (not shown) originally attached at 8 and 9 removed. The rim 3 is welded to a ledge section 10 on the periphery of the disc 2.
In the fourth example shown in Figure 4 the wheel is constructed from two parts, namely a central hub section 11 and a wheel rim 12. The hub section 1 1 has a profile suitable for attachment to a wheel hub (not shown) by way of studs which are aligned with holes (not shown) on centre lines 13 (only one of which can be seen) in disc portion 14.
The wheel rim 12 is profiled to have a pneumatic tyre (not shown) fitted and the external profile may of any suitable construction and shape which is cast from the same or similar metal alloy material as the section 11 . The section 11 and rim 12 are held together by rubber 15 which is vulcanised to the parts.
The wheel assembly is formed by placing the hub section 1 1 and wheel rim 12 in position in or on a jig/mechanism so that under heat and pressure the rubber is forced into the space therebetween to be vulcanised to the surfaces 16 and 17 respectively of the hub section 1 1 and wheel rim 12.
T _.._.~~_.._... .
In practice operating stresses would expose the noise barrier formed by the rubber 4 to driving, braking, cornering and weight supporting forces. The most effective position in the wheel assembly for this noise barrier would seem to be as close as possible to the noise source. In the examples the barrier is farthermost away from the hub has been chosen for as little stress as possible and that is between the wheel rim and the wheel disc. The applicant is confident that the forces can be taken care of in the strength of the vulcanising contact between the rubber barrier and the wheel rims.
Bearing in mind the quality of modern vulcanising, the applicant considers this will be satisfactory. However, strict quality control measures are essential.
There are other advantages to having this rubber bushing built into motor vehicle wheels apart from the major advantage of muting pneumatic tyre noise entering the vehicle cab. The rubber is an added shock absorbent assisting in taking impact stress off the wheel assemblies, suspensions and also serves to increase the life of the wheel bearings. It should help to protect the vehicle transmission from shock through the mechanical drive to the road. It will also assist in automatically keeping the wheels in balance and giving a smoother ride. The applicant believes it will transform the ride of a standard car into a more luxurious model.
Prior to extruding the rubber between the two parts of the rim it will be necessary to have a special jig manufactured to set the rim and disc assembles in correct concentric positions and also to arrange for correct location between the hub and rim.
Where in the aforegoing description mechanical equivalents are available it is to be appreciated that they can be substituted for the named components.
Bearing in mind the quality of modern vulcanising, the applicant considers this will be satisfactory. However, strict quality control measures are essential.
There are other advantages to having this rubber bushing built into motor vehicle wheels apart from the major advantage of muting pneumatic tyre noise entering the vehicle cab. The rubber is an added shock absorbent assisting in taking impact stress off the wheel assemblies, suspensions and also serves to increase the life of the wheel bearings. It should help to protect the vehicle transmission from shock through the mechanical drive to the road. It will also assist in automatically keeping the wheels in balance and giving a smoother ride. The applicant believes it will transform the ride of a standard car into a more luxurious model.
Prior to extruding the rubber between the two parts of the rim it will be necessary to have a special jig manufactured to set the rim and disc assembles in correct concentric positions and also to arrange for correct location between the hub and rim.
Where in the aforegoing description mechanical equivalents are available it is to be appreciated that they can be substituted for the named components.
Thus by this invention there is provided a wheel noise reduction assembly.
Particular examples of the invention have been described and it is envisaged that improvements and modifications can take place with departing from the scope of the appended claims.
r __._._......_._~._._ . t
Particular examples of the invention have been described and it is envisaged that improvements and modifications can take place with departing from the scope of the appended claims.
r __._._......_._~._._ . t
Claims (7)
1. A noise isolation barrier in a road wheel assembly for a motor vehicle with pneumatic tyres in which:
the isolation barrier is made from any suitable noise absorbing/deadening material manufactured to exacting safety specifications as far as width and thickness;
the isolation barrier is placed between two steel or other material rings or plates, which can constitute a road wheel rim and/or a wheel hub assembly, such that it completely isolates the wheel rim from the wheel hub assembly.
the isolation barrier is made from any suitable noise absorbing/deadening material manufactured to exacting safety specifications as far as width and thickness;
the isolation barrier is placed between two steel or other material rings or plates, which can constitute a road wheel rim and/or a wheel hub assembly, such that it completely isolates the wheel rim from the wheel hub assembly.
2. A noise isolation barrier in a road wheel assembly as claimed in claim 1 wherein the barrier is made from a solid synthetic or natural rubber or plastics material which is an extremely poor medium for transmitting vibrations.
3. A noise isolation barrier in a road wheel assembly as claimed in claim 1 or claim 2 wherein the barrier is a specially prepared durable rubber extruded and vulcanised between the two steel or other metal rings or plates.
4. A noise isolation barrier as claimed in any of the preceding claims incorporated into a new wheel or as a modification to an existing wheel which should in no way affect the balance of the wheel.
5. A noise isolation barrier in a road wheel assembly as claimed in any one of the preceding claims wherein the barrier is an annular strip of durable natural/
synthetic rubber sandwiched between an annular rim and a wheel rim.
synthetic rubber sandwiched between an annular rim and a wheel rim.
6. A noise isolation barrier in a road wheel assembly as claimed in claim 5 wherein the rubber strip is vulcanised to both the wheel rim and the rim.
7. A noise isolation barrier in a road wheel assembly as claimed in claim 4 wherein the wheel is constructed with two discs which are joined together by a vulcanised rubber plate which acts as the barrier.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ31416797 | 1997-01-31 | ||
| NZ314167 | 1997-01-31 | ||
| PCT/NZ1998/000003 WO1998033666A1 (en) | 1997-01-31 | 1998-01-26 | Wheel noise reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2278719A1 true CA2278719A1 (en) | 1998-08-06 |
Family
ID=19926128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002278719A Abandoned CA2278719A1 (en) | 1997-01-31 | 1998-01-26 | Wheel noise reduction |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0956210A1 (en) |
| JP (1) | JP2001510418A (en) |
| CN (1) | CN1246094A (en) |
| AU (1) | AU722808B2 (en) |
| CA (1) | CA2278719A1 (en) |
| WO (1) | WO1998033666A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9901020D0 (en) | 1999-01-18 | 1999-03-10 | Loughborough Mark | Wheels |
| EP1055527B1 (en) * | 1999-05-20 | 2002-09-18 | Ford Global Technologies, Inc. | Wheel rim |
| FR2794683A1 (en) * | 1999-06-08 | 2000-12-15 | Michelin Soc Tech | ACOUSTICALLY DAMPING WHEEL |
| US6981535B1 (en) | 1999-08-02 | 2006-01-03 | Bridgestone Corporation | Elastic wheel |
| DE60043015D1 (en) | 1999-08-02 | 2009-11-05 | Bridgestone Corp | ELASTIC WHEEL |
| DE29916796U1 (en) | 1999-09-20 | 1999-12-30 | Pötzscher, Manfred, 21149 Hamburg | Wheel with elastic bandage between the hub and the tread |
| DE60040094D1 (en) | 1999-12-21 | 2008-10-09 | Bridgestone Corp | ELASTIC WHEEL |
| CA2402262A1 (en) | 2000-03-13 | 2001-09-20 | Bridgestone Corporation | Elastic wheel |
| WO2001083240A1 (en) * | 2000-04-28 | 2001-11-08 | Bridgestone Corporation | Rim for elastic wheel |
| JP4798745B2 (en) * | 2000-07-10 | 2011-10-19 | トピー工業株式会社 | Elastic wheel |
| JPWO2002030684A1 (en) * | 2000-10-06 | 2004-02-19 | 株式会社ブリヂストン | Elastic wheel |
| JP4025720B2 (en) * | 2001-06-05 | 2007-12-26 | 株式会社ブリヂストン | Elastic wheel |
| JPWO2002100662A1 (en) * | 2001-06-11 | 2004-09-24 | 株式会社ブリヂストン | Elastic wheel |
| JP4188030B2 (en) * | 2002-08-23 | 2008-11-26 | 横浜ゴム株式会社 | Tire wheel |
| DE102008048389B4 (en) | 2008-09-22 | 2015-02-05 | Thyssenkrupp Steel Europe Ag | Rim for a motor vehicle |
| WO2014106908A1 (en) * | 2013-01-07 | 2014-07-10 | 株式会社ゼロワンデザイン | Wheel for bag |
| FR3005437B1 (en) * | 2013-05-07 | 2016-10-21 | Daniel Nageotte | DAMPING DEVICE FOR A MOTORIZED VEHICLE RIM. |
| EP3212432B1 (en) * | 2014-10-31 | 2023-08-09 | Mubea Carbo Tech GmbH | Wheel for a vehicle |
| EP3228473B1 (en) | 2016-04-04 | 2024-05-15 | Mubea Carbo Tech GmbH | Wheel for a vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2457907C3 (en) * | 1974-12-04 | 1982-03-04 | Mannesmann Kronprinz Ag, 5650 Solingen | Vehicle wheel and process for its manufacture |
| EP0065086A1 (en) * | 1981-05-15 | 1982-11-24 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Rotating member |
| US4449756A (en) * | 1982-03-09 | 1984-05-22 | Motor Wheel Corporation | Tracked vehicle road wheel |
| DE3844329A1 (en) * | 1988-12-30 | 1990-07-12 | Mti Metalltechnik Internationa | Multi-component motor vehicle rim |
| US5018566A (en) * | 1988-12-30 | 1991-05-28 | Ludwig Thoni | Multi-part bolted steel rim |
| FR2705418B1 (en) * | 1993-05-14 | 1995-08-04 | Hutchinson | Vehicle noise attenuation device. |
| DE19544855C2 (en) * | 1995-12-01 | 1999-10-14 | Continental Ag | Soundproofing device for a vehicle rim |
-
1998
- 1998-01-26 AU AU57830/98A patent/AU722808B2/en not_active Ceased
- 1998-01-26 CA CA002278719A patent/CA2278719A1/en not_active Abandoned
- 1998-01-26 JP JP53276098A patent/JP2001510418A/en active Pending
- 1998-01-26 WO PCT/NZ1998/000003 patent/WO1998033666A1/en not_active Application Discontinuation
- 1998-01-26 CN CN 98802170 patent/CN1246094A/en active Pending
- 1998-01-26 EP EP98901595A patent/EP0956210A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998033666A1 (en) | 1998-08-06 |
| CN1246094A (en) | 2000-03-01 |
| EP0956210A1 (en) | 1999-11-17 |
| JP2001510418A (en) | 2001-07-31 |
| AU722808B2 (en) | 2000-08-10 |
| AU5783098A (en) | 1998-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |