GB2423752A - Bicycle Wheel Rim - Google Patents
Bicycle Wheel Rim Download PDFInfo
- Publication number
- GB2423752A GB2423752A GB0523335A GB0523335A GB2423752A GB 2423752 A GB2423752 A GB 2423752A GB 0523335 A GB0523335 A GB 0523335A GB 0523335 A GB0523335 A GB 0523335A GB 2423752 A GB2423752 A GB 2423752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat
- sidewalls
- bicycle
- rim
- blocks
- 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.)
- Withdrawn
Links
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 239000000835 fiber Substances 0.000 claims description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000011152 fibreglass Substances 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims 2
- 241000219357 Cactaceae Species 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 abstract 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 5
- 239000011151 fibre-reinforced plastic Substances 0.000 description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 101100534575 Caenorhabditis elegans sucl-1 gene Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Classifications
-
- 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
- B60B21/025—Rims characterised by transverse section the transverse section being hollow
-
- 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
- B60B21/04—Rims characterised by transverse section with substantially radial flanges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/06—Rims characterised by means for attaching spokes, i.e. spoke seats
- B60B21/062—Rims characterised by means for attaching spokes, i.e. spoke seats for bicycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/08—Rims characterised by having braking surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B5/00—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material
- B60B5/02—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material made of synthetic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/13—Bicycles; Tricycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The rim includes a main body 1 having two annular sidewalls 11, 12 and an annular rib 13 connected between the sidewalls. Outer ends of the sidewalls distal 11,12 from the circular center of the rim and the rib 13 together define a groove 14 for a tire 2. The main body 1 is completely made of a synthetic fibre or composite material. Multiple heat-radiating blocks 15 are inlaid in portions of the sidewalls for contact by brake blocks and arranged at intervals. The heat-radiating blocks 15 are made of high heat-radiation efficiency materials. The main body 1 and the heat-radiating block 15 have different frictional coefficients. The heat-radiating blocks are capable of quickly dissipating the heat generated due to friction between brake blocks 15 and the sidewalls 11, 12 of the rim. In addition, due to the different frictional coefficients, an antilock/antiskid effect is achieved. The blocks 15 are secured by adhesive or have tenons interlocking with mortises in recesses 111 in the sidewalls.
Description
S -1--
RIM STRUCTURE OF A BICYCLE
Background of the Invention
The!.)reseflt invention is related to a composite material-made rim structure of a bicycle, and more particularly to a composite materialmade rim structure capable of quickly dissipating the heat and having antilocklanliskjd function.
The conventional bicycle rims arc mostly made of metal materials. The metal materials have heavier weight. For achieving lightweight rim, recently various composite material- made rim structures have been developed.
Figs. 5 and 6 show a conventional aluminium alloy rim 5. Each side of the rim 5 is formed with several arced grooves 5 1 with a certain depth. The arced grooves 51 are arranged along the rim 5 at intervals. A carbon fibre material 52 is inlaid in each groove 1 to reduce the tota.l weight of the aluminium alloy rim. However, such rim structure is still mainly made of alumirnun] alloy and thus the weight of such aluminium alloy rim is still heavier than the weight of carbon fibre-macIc rim.
The rim made of all-carbon fibre material is advantageous over the conventional metal-made rim in lightweight. However, the ordinary carbon fibre reinforced polymer composite materials arc not hcat-resistaiit. Under a temperature over 200 C, the strength of the carbon fibre reinforced polymer composite material will be deteriorated. Moreover, the surface of the carbon fibre rein Ibrced polymer composite material will he damaged due to high temperature. Besides, the rim made of all-carbon fibre reinforced polymer composite materials has lower heat-radiation coefficient. Therefore, the instantaneous frictional temperature of the portions of the rim in contact with the brake blocks is up to 3 50 C. Iii other words, the portions of the all-carbon fibre material- made rim in contact with the brake blocks will be abnormally worn out due to high working temperature. In order to increase the heat resistance of the all-carbon fibre material-made rim, it is necessary to manufacture the rim with high heat-resistant resin material. However, the unit price of sucl1 resin material is high and the manufacturing cost is increased.
En order to solve the above problems, a rim structure made of composite material has been developed. The composite material is composed of aluminium material and carbon fibre wrapping the aluminium material. Alternatively, the composite material is composed of aluminium ring and carbon fibre bonded with the aluminium ring. The aluminium material or aluminium ring has a heat-radiating effect better than that of carbon fibre so that the abnormal wear caused by overheating of the rim can be avoided. However, the metal parts of the above rim structures still somewhat lead to the problem of heavy weight. Therefore, it is necessary to provide an improved rim structure for overcoming all the above problems.
Summary of the Disclosure
It is therefore a primary object of the present mvention to provide a rim structure of a bicycle. The main body of the rim structure is made of composite material. Multiple heat- radiating blocks are inlaid in the portions of the sidewalls of the rim in contact with the brake blocks and arranged at intervals. The heat-radiating blocks are made of high heatradiation efficiency material lbr quickly dissipating the heat generated due to friction between brake blocks and the sidewalls of the rim. The rim structure can achieve both effects of lightweight and high heat- radiation efficiency.
According to the above object, the rim structure of the bicycle of the present invention includes a main body having two annular sidewalls and an annular rib connected between the sidewalls. liiiier ends of the sidewalls proximal to a circular centre of the rim are connected with each other Outcr ends of the sidewalls and the rib together define a chucking groove for chucking a tire therein. The main body is completely made of composite material and niLiltiple heat-radiating blocks are inlaid in the sidewalls at intervals. The heat-radiating blocks are made of high heat-radiation efficiency niaterials, whereby the heat-radiating blocks can quickly dissipate the heat generated due to frici ion between brake blocks of the bicycle and the sidewalls of the rim.
The present Invention can be best understood through the fi)llowing description and accompanying drawings wherein:
Brief Description of the Drawings
Fig. I is a perspective exploded view of a part of the rim structure of the present in venti on; Fig. 2 Is a sectional view showing the arrangements of the rim structure of the present invention and the tire and brake blocks of a bicycle; Fig. 3 is a sectional view showing that the heat-radiating block of the present invention is inlaid in the inlay dent of the sidewall of the rim structure; mnd Fig. 4 is a sectional view of a second embodiment of the present invention, showing that the heatradiating block is inlaid in the inlay dent of the sidewall of the rim structure.
Fig. 5 is a partially sectional view of a conventional aluminium alloy rim in which carbon fibre materials arc inlaid; and Fig. 6 is a side view of the conventional aluminium alloy rim in which carbon fibre materials are inlaid.
Please refer to Figs. 1 to 3. The rim structure of a bicycle of the present invention includes a main body I made of one of all-carbon fibre, fibreglass and Aramid fibre or a composite material thereof The main body I has two annular sidewalls Ii, 12. An annular rib 13 is connected between the sidewalls 11, 12. In addition, inner ends of the si(lewalls 11, 12 proximal to the circular centre of the rim arc connected with each other.
Outer ends of the sidewalls ii, 12 and the rib 13 together define a chucking groove 14 in which a tire 2 is chucked.
the marn body 1 is completely made of composite material. In this embodiment, the main body 1 is made oiall-cai-bon fibre. The sidewalls 11, 12 are respectively formed with two annular braking sections corresponding to the brake blocks 3. Multiple inlay dents 111, 1 21 are arranged on the annular braking sections at intervals. A heat-radiating block 15 is inlaid in each inlay dent 111, 121. The heat-radiating block 1 5 is made of one of carbon/carbon composite material, copper, aluminium alloy and graphite. The heat- radiating block 1 5 has a shape adapted to the shape of the inlay dent 111, 121, whereby the heat-radiating block 15 can be inlaid and fixedly adhered in the inlay dent 111, 121 with a high-performance adhesive A. The heat-radiating block 15 is flush with the outer surface of the sidewalls 11, 12 to form a smooth face.
With the heat-radiating block 15 made carbon/carbon composite material exemplified, the heat capacity of the carbonlcarbon composite material is 2.5 times the heat capacity of a general metal material. Moreover, the carbon/carbon composite material is characterized in that the strength and rigidity of the carbon/carbon composite material keep unchanged under condition of 2500 C high temperature. Therefore, the heat-radiating blocks 15 inlaid in the main body 1 of the rim structure can quickly dissipate the heat generated clue to friction between the brake blocks 3 and the sidewalls 11, 12 of the rim. Accordingly, the rim main body I niade of all-carbon fibre reinforced polymer composite material will not be abnormally worn due to overheating. In addition, the heat-radiating blocks 15 enhance the braking effect. This is because that the main body and the heat-radiating block are made of different materials and have different frictional coefficients. Therefore, when braked, an intermittent braking effect is achieved as an ABS brake system.
Therefore, the braking distance can be shortened and an antilock/antiskjd effect is achieved. Furthermore, the rim main body 1 made of all-carbon fibre reinforced polymer composite material and the heat-radiating blocks 15 made of carbon/carbon composite material at-c both lightweight materials. Therefore, the present invention can achieve both effects of lightweight and high heat-radiation efficiency as well as antilock/antiskid function.
Fig. 4 shows a second embodiment of the present invention, in which the heat- radiating block 45 has several tenons 451 projectIng from outer circumference of the heat- radiating block 45. The inlay dent 411, 421 is formed with several mortises 412, 422 corresponding to the tenons 45 1. By means of inserting the tenons 45 1 into the mortises 412, 422, the heat-radiating block 45 can be flxed in the inlay dent 411, 421. This can achieve the same effect as the first embodiment.
In order to prevent the heat-radiating blocks from conducting the frictional heat to the main body, a heat-insulating layer can be laid between each heat-radiating block and the walls of the inlay dent. The heat-insulating layer can be made of libreglass or aramid fibre.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Claims (10)
1. A rim structure of a bicycle, comprising a composite material-made main body I having two annular sidewalls 11, 12 and an annular rib 13 connected between the sidewalls 11,12, inner ends of the sidewalls proximal to a circular centre of the rim being connected with each other, outer ends of the sidewalls and the rib together defining a chucking groove 14 for chucking a tire 2 therein, said rim structure being characterized in that the main body I is completely made of composite material and the sidewalls are respectively fbrmed with two annular braking sections, at least one inlay dent 111,112, bemg arranged on cacti annular braking section, the heal -radiatmg blocks 15 being made of high heat-radiation efficiency material, whereby the heat-radiating blocks 15 can quickly dissipate the heat generated due to friction between brake blocks 3 of the bicycle and the sidewalls 11, 12 of the rim and achieve antilock/antiskid effect.
2. The im structure of the bicycle as claimed in claim 1, wherein the heat-radiating bLocks 15 are made olone olcaibon/caibon composite material, copper, aluminium alloy and/or graphite.
3. The rim structure ofthe bicycle as claimed in claim 1, wherein the main body 1 is made of one of all-carbon fibre, fibre glass and Aramid fibre or a composite material thereof.
4. The rim structure of the bicycle as claimed in claim 3, wherein the annular braking seclions of the sidewalls are formed with multiple inlay dents 111, 121 arranged at iiitervals, the heat-radiating blocks 15 having a shape adapted to a shape of the inlay dents, whereby multiple heat-radiating blocks can be inlaid in the inlay dents in flush with outer surfaces of the sidewalls to form smooth faces.
5. The rim structure of the bicycle as claimed in claim 4, wherein the heat-radiating blocks ai-e inlaid and fixedly adhered in the inlay dents with a high-performance adhesive.
6. The rim structure oftlie bicycle as claimed in claim 4, wherein a heatinsulating layer is laid between each heat-radiating block and the walls of the inlay dent III, 121 for preventing the heat-radiating block from conducting the heat to the main body.
7. The rim structure of the bicycle as claimed in claim 6, wherein the heal-insulating layer is made of fibreglass or aromatic fibre.
8. The rim structure of the bicycle as claimed in claim 4, wherein each heat-radiating block has several tenons 45 I projecting from outer circumference of the heat-radiating block, each inlay dciii being formed with several mortises 41 2, 422 respectively corresponding to the tenons 45 1, whereby by means of inserting the tenons into the mortises, the heat-radiating block 15 can be fixed in the inlay dent 111, 1 21.
9. The rim structure of the bicycle as claimed in claim 8, wherein a heatinsulating layer is laid between each heat-radiating block arid the walls of the inlay dent for preventing the heat-radiating block from conducting the heat to the main body.
10. The rim structure of the bicycle as claimed in claim 9, wherein the heat-insulating layer is made of fibreglass or aromatic fibre.
II. A rim structure of a bicycle substantially as described herein, with reference to and as illustrated by any appropriate combination of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW094203280U TWM275971U (en) | 2005-03-03 | 2005-03-03 | Rim structure with composite material for bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0523335D0 GB0523335D0 (en) | 2005-12-28 |
| GB2423752A true GB2423752A (en) | 2006-09-06 |
Family
ID=35580142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0523335A Withdrawn GB2423752A (en) | 2005-03-03 | 2005-11-16 | Bicycle Wheel Rim |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2882688A1 (en) |
| GB (1) | GB2423752A (en) |
| TW (1) | TWM275971U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116703A1 (en) * | 2010-03-25 | 2011-09-29 | 昆山亨利金属科技有限公司 | Carbon fiber rim struture |
| US8905491B2 (en) | 2010-07-27 | 2014-12-09 | Shimano Inc. | Bicycle rim |
| US20150096672A1 (en) * | 2013-10-08 | 2015-04-09 | Tien Hsin Industries Co., Ltd. | Method for manufacturing carbon fiber rim |
| IT201900024376A1 (en) * | 2019-12-18 | 2021-06-18 | Biemme Group Srl | Wheel for wheelchair for the disabled |
| GB2605583A (en) * | 2021-04-01 | 2022-10-12 | Drag2Zero Ltd | Bicycle Wheel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741578A (en) * | 1984-08-21 | 1988-05-03 | Viellard Paul Henri | Assembly of composite materials forming a spoke wheel rim |
| JPH07329198A (en) * | 1994-06-09 | 1995-12-19 | Mitsubishi Rayon Co Ltd | Manufacture of fiber-reinforced resin wheel for bicycle |
-
2005
- 2005-03-03 TW TW094203280U patent/TWM275971U/en unknown
- 2005-11-16 GB GB0523335A patent/GB2423752A/en not_active Withdrawn
-
2006
- 2006-02-08 FR FR0601112A patent/FR2882688A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741578A (en) * | 1984-08-21 | 1988-05-03 | Viellard Paul Henri | Assembly of composite materials forming a spoke wheel rim |
| JPH07329198A (en) * | 1994-06-09 | 1995-12-19 | Mitsubishi Rayon Co Ltd | Manufacture of fiber-reinforced resin wheel for bicycle |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116703A1 (en) * | 2010-03-25 | 2011-09-29 | 昆山亨利金属科技有限公司 | Carbon fiber rim struture |
| US8905491B2 (en) | 2010-07-27 | 2014-12-09 | Shimano Inc. | Bicycle rim |
| US20150096672A1 (en) * | 2013-10-08 | 2015-04-09 | Tien Hsin Industries Co., Ltd. | Method for manufacturing carbon fiber rim |
| US9242421B2 (en) * | 2013-10-08 | 2016-01-26 | Tien Hsin Industries Co., Ltd. | Method for manufacturing carbon fiber rim |
| IT201900024376A1 (en) * | 2019-12-18 | 2021-06-18 | Biemme Group Srl | Wheel for wheelchair for the disabled |
| GB2605583A (en) * | 2021-04-01 | 2022-10-12 | Drag2Zero Ltd | Bicycle Wheel |
| GB2605583B (en) * | 2021-04-01 | 2023-09-13 | Drag2Zero Ltd | Bicycle Wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0523335D0 (en) | 2005-12-28 |
| FR2882688A1 (en) | 2006-09-08 |
| TWM275971U (en) | 2005-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |