CN202765218U - Bicycle chain wheel - Google Patents
Bicycle chain wheel Download PDFInfo
- Publication number
- CN202765218U CN202765218U CN 201220320295 CN201220320295U CN202765218U CN 202765218 U CN202765218 U CN 202765218U CN 201220320295 CN201220320295 CN 201220320295 CN 201220320295 U CN201220320295 U CN 201220320295U CN 202765218 U CN202765218 U CN 202765218U
- Authority
- CN
- China
- Prior art keywords
- bicycle chainwheel
- base portion
- sprocket wheel
- bicycle
- chainwheel
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a bicycle chain wheel which ensures necessary rigidity and is light in weight. A chain wheel body of the bicycle chain wheel is provided with at least a gear portion which is provided with a drive face portion and a base portion. The drive face portion is formed by a first material and the base portion is formed by a second material. The first material is more rigid than the second material.
Description
Technical field
The utility model is about a kind of sprocket wheel, particularly about bicycle chainwheel.
Background technology
Bicycle is provided with front sprocket wheel and the rear sprocket wheel that is conveyed to trailing wheel for the rotation with bent axle.The rotation of front sprocket wheel and bent axle one, and via chain the rotation of bent axle is conveyed to the rear sprocket wheel of being located at trailing wheel.A plurality of tooth section is set in the bicycle chainwheel that comprises these front sprocket wheels and rear sprocket wheel.Because tooth section contacts with chain, so existing tooth section in order to ensure rigidity, and (for example: Japanese kokai publication hei 11-263281 communique) is made of the higher a kind of metallic material of iron equal strength.
Existing bicycle chainwheel is because tooth section consists of with a kind of metallic material, so the rigidity of taking into account and lightweight difficulty.
The utility model content
Purpose of the present utility model provides a kind of bicycle chainwheel, especially provides a kind of providing to guarantee necessary rigidity and the bicycle chainwheel of light weight.
For this reason, the utility model proposes a kind of bicycle chainwheel, be provided with at least one tooth section, this tooth section has the face of driving and base portion.Driving face is made of the first material.Base portion is made of the second material.The rigidity of the first material is higher than the rigidity of the second material.
Aforesaid bicycle chainwheel, wherein, the density of described the second material is lower than the density of described the first material.
Aforesaid bicycle chainwheel, wherein, described the first material is metal.
Aforesaid bicycle chainwheel, wherein, described the first material is iron.
Aforesaid bicycle chainwheel, wherein, described the second material is metal.
Aforesaid bicycle chainwheel, wherein, described the second material is aluminium.
Aforesaid bicycle chainwheel, wherein, described the second material is non-metal.
Aforesaid bicycle chainwheel, wherein, described the second material is carbon-fiber reinforced resins.
Aforesaid bicycle chainwheel, wherein, described driving face has protuberance, and described base portion has the recess that is embedded in described protuberance.
Aforesaid bicycle chainwheel, wherein, described driving face sticks together and is fixed in described base portion.
Aforesaid bicycle chainwheel, wherein, described driving face is fixedly welded on described base portion.
Aforesaid bicycle chainwheel, wherein, described driving face is pressed into and is fixed in described base portion.
Aforesaid bicycle chainwheel, wherein, the gear teeth section that described bicycle chainwheel further is provided with when gear shifting operation and cycle chain is chimeric, described gear teeth section are with the spacing different from described tooth section and configure.
Aforesaid bicycle chainwheel, wherein, described bicycle chainwheel is front sprocket wheel.
Aforesaid bicycle chainwheel, wherein, described bicycle chainwheel is rear sprocket wheel.
Aspect this bicycle chainwheel, when driving, contact with chain and pass on the driving face of propulsive effort to be consisted of by the first high material of rigidity.In addition, do not contact with chain and the base portion that drives is made of rigidity the second material lower than the first material.Whereby, the second material can use the material of the little and light weight of density.Thereby can provide and guarantee necessary rigidity and the bicycle chainwheel of light weight.
According to the utility model, can consist of driving face and base portion by the different material of rigidity.Whereby, the second material can use the material of the little and light weight of density.Thereby can provide and guarantee necessary rigidity and the bicycle chainwheel of light weight.
Description of drawings
Fig. 1 is the front view of the bicycle rear sprocket fabricate block of a kind of example of employing the utility model.
Fig. 2 shows that the master of an example of tooth section looks enlarged drawing.
Fig. 3 is the front view of the bicycle rear sprocket of a kind of example of the utility model.
Fig. 4 shows that the master of an example of gear teeth section looks enlarged drawing.
The main element label declaration:
10 bicycle rear sprocket fabricate blocks
Sprocket wheel behind the 20a-20i
22 tooth sections
24 gear teeth sections
The 24a dip plane
26 drive face
The 26a contact surface
The 26b protuberance
28 base portions
The 28a recess
30 installation portions
40 chains
The 40a roller
The R direct of travel
α, β, γ angle
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model:
Among Fig. 1, adopting the bicycle rear sprocket fabricate block 10 of a kind of example of the utility model, is by the number of teeth different for example sprocket wheel 20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h and 20i and consist of after 9.Sprocket wheel 20a-20i is an example of bicycle chainwheel of the present utility model after these.The number of teeth of rear sprocket wheel 20a for example is 11, and the number of teeth is minimum.The number of teeth of rear sprocket wheel 20i for example is 32, and the number of teeth is maximum.Again, the number of teeth of sprocket wheel 20b-20h for example 12,14,16,17,21,24,28 after middle 7, and the number of teeth sequentially increases.The rear sprocket wheel 20a that wherein diameter is little and rear sprocket wheel 20b for example are installed in separately the sprocket wheel installing department without graphic rear-wheel hub.Sprocket wheel 20c-20i example is passed through to fix without graphic branched inserted pins after other, and is installed in together the sprocket wheel installing department.In addition, among Fig. 1, the shape summary of the tooth described later section 22 of rear sprocket wheel 20a-20i is described.
As shown in Figure 2, rear sprocket wheel 20a-20i possesses a tooth section 22 at least.As shown in Figure 3, for example rear sprocket wheel 20d has 16 tooth sections 22 altogether.Rear sprocket wheel 20d further possesses at least one gear teeth section 24.This example arranges a gear teeth section 24.
As shown in Figure 2, tooth section 22 has the face of driving 26 and base portion 28.When the direct of travel R that sprocket wheel 20a-20i represents along arrow among Fig. 2 on bicycle after chain 40 drives rotated, driving facial 26 was the part of the roller 40a contact of chain 40.Driving facial 26 is made of the first material.Drive facial 26 and be fixed in base portion 28 by suitable fixing means such as sticking together, weld and be pressed into.The driving face 26 of this example sticks together and is fixed in base portion 28.The first material is such as being the metal that comprises iron, corrosion-resistant steel or titanium etc.First material of this example is the metal that comprises iron.When chain 40 drives and when direct of travel R rotate, drive face 26 and have the contact surface 26a that roller 40a can contact and the protuberance 26b that is embedded in base portion 28.Contact surface 26a extends the upstream side (Fig. 2 left side) of direct of travel R towards adjacent tooth section 22 or gear teeth section 24.Protuberance 26b gives prominence to and forms towards the downstream (Fig. 2 right side) of direct of travel R.So, owing to making protuberance 26b protrude from direct of travel R downstream, when driving rear sprocket wheel 20a-20i by chain 40, protuberance 26b protrudes from driving direction, that is direct of travel R.Thereby, even acting on, the propulsive effort that chain 40 causes drives face 26, drive facial 26 and also be difficult to break away from from base portion 28.
When direct of travel R rotated, base portion 28 was the parts that do not contact driving in the tooth section 22 by roller 40a when rear sprocket wheel 20a-20i is driving.Base portion 28 is made of the second material.The second material is compared to the first material, and rigidity is low, and density is little.The second material is such as comprising the metals such as aluminium, titanium, or the non-metal such as carbon-fiber reinforced resins.Second material of this example is aluminum alloy.The mode that drives facial 26 protuberance 26b that has base portion 28 to be embedded in caves in and the recess 28a that forms.Base portion 28 should be with integrally formed for the installation portion 30 of the sprocket wheel installing department that rear sprocket wheel 20a-20i is installed in rear-wheel hub.
As shown in Figure 4, gear teeth section 24 is integrally formed with installation portion 30, and is made of the second material with installation portion 30.Gear teeth section 24 for example has for carrying out smoothly to the dip plane 24a of the rear sprocket wheel 20b-20i rising speed change of larger diameter side.Dip plane 24a be with from the downstream of direct of travel R towards the direction in upstream side (Fig. 4 left side), favour the mode of large diameter sprocket side and form.
Wherein, as shown in Figure 3, tooth section 22 summarys are spent the spacing of the angle [alpha] that gets divided by all numbers of teeth with 360 and are configured.In addition, gear teeth section 24 configures with the spacing of the angle beta larger than angle [alpha] with the tooth section 22 of direct of travel R upstream side (Fig. 3 left side).Therefore, gear teeth section 24 configures with the spacing of the angle γ less than angle [alpha] (γ=2 * alpha-beta) with the tooth section 22 in direct of travel downstream (Fig. 3 downside).At the rear sprocket wheel 20a-20h except the maximum rear sprocket wheel 20i of the number of teeth of the speed change that do not need to rise a gear teeth section 24 is set at least respectively.
During with this kind spacing configuration gear teeth section 24, even rear sprocket wheel 20a-20i drives by chain 40 and in direct of travel R rotation, gear teeth section 24 unlikely contacts with chain 40 that consisted of by rigidity the second material lower than the first material and driven.Whereby, but the shape of free setting gear teeth section 24.
Aspect the rear sprocket wheel 20a-20i that so consists of, when rear sprocket wheel 20a-20i drives by chain 40 and when direct of travel R rotate, contact chain 40 and driven driving face 26 is to be made of the first high material of rigidity.Thereby, can guarantee when the driving due to the chain 40 rigidity of rear sprocket wheel 20a-20i necessity.Again, because base portion 28 and installation portion 30 can be by low with the first material phase specific rigidity, but the second material of the little light weight of density consists of, and therefore can seek the lightweight of rear sprocket wheel 20a-20i.
Again, when in rear sprocket wheel 20a-20h, establishing gear teeth section 24, be that the spacing of gear teeth section 24 is formed the spacing different from the spacing of tooth section 22, after driving during any one of sprocket wheel 20a-20h, the chain 40 unlikely gear teeth sections 24 that are contacted with.Thereby propulsive effort is not conveyed to gear teeth section 24, can consist of gear teeth section 24 by the second low material of rigidity.Whereby, seek the further lightweight of rear sprocket wheel 20a-20h.
(other examples)
Above, be explanation a kind of example of the present utility model, but, the utility model is not to be defined in above-mentioned example, can do various changes in the scope that does not break away from the utility model main idea.Particularly write in this manual a plurality of examples and variation, but combination in any according to need.
(a) aforementioned example be after sprocket wheel be that example illustrates bicycle chainwheel of the present utility model, but the utility model is not limited to this.Also can in front sprocket wheel, be suitable for the utility model.
(b) aforementioned example illustrates the utility model as an example of the chain wheel set zoarium of variable-ratio with a plurality of rear sprocket wheels example, but the utility model is not limited to this.For example also can in the front sprocket wheel of a slice and rear sprocket wheel, be suitable for the utility model.
(c) aforementioned example is to make the protuberance 26b that drives face 26 outstanding towards the downstream of direct of travel R, but also can be outstanding towards radially inner side.
(d) aforementioned example is driving facial 26 formation protuberance 26b, and forms the recess 28a of the protuberance 26b that is embedded in driving facial 26 at base portion 28, but the utility model is not limited to this.For example also can form recess in driving facial 26, and form the protuberance that is embedded in the recess that drives face 26 at base portion 28.
(e) in the aforementioned example, the first material is iron, and the second material is aluminium, but the first material and the second material are not limited to these.As aforementioned, the first material also can be corrosion-resistant steel or titanium.In addition, the second material also can be the non-metals such as the metals such as titanium or carbon-fiber reinforced resins.
The above only is the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (16)
1. bicycle chainwheel, it is characterized in that, described bicycle chainwheel is provided with at least one tooth section, and described tooth section has the facial base portion with being made of the second material of the driving that is made of the first material, and the rigidity of described the first material is higher than the rigidity of described the second material.
2. bicycle chainwheel as claimed in claim 1 is characterized in that, the density of described the second material is lower than the density of described the first material.
3. bicycle chainwheel as claimed in claim 1 is characterized in that, described the first material is metal.
4. bicycle chainwheel as claimed in claim 3 is characterized in that, described the first material is iron.
5. bicycle chainwheel as claimed in claim 1 is characterized in that, described the second material is metal.
6. bicycle chainwheel as claimed in claim 5 is characterized in that, described the second material is aluminium.
7. bicycle chainwheel as claimed in claim 1 is characterized in that, described the second material is non-metal.
8. bicycle chainwheel as claimed in claim 7 is characterized in that, described the second material is carbon-fiber reinforced resins.
9. bicycle chainwheel as claimed in claim 1 is characterized in that, described driving face has protuberance, and described base portion has the recess that is embedded in described protuberance.
10. bicycle chainwheel as claimed in claim 1 is characterized in that, described driving face has recess, and described base portion has the protuberance that is embedded in described recess.
11. bicycle chainwheel as claimed in claim 1 is characterized in that, described driving face sticks together and is fixed in described base portion.
12. bicycle chainwheel as claimed in claim 1 is characterized in that, described driving face is fixedly welded on described base portion.
13. bicycle chainwheel as claimed in claim 1 is characterized in that, described driving face is pressed into and is fixed in described base portion.
14. bicycle chainwheel as claimed in claim 1 is characterized in that, the gear teeth section that described bicycle chainwheel further is provided with when gear shifting operation and cycle chain is chimeric, described gear teeth section are with the spacing different from described tooth section and configure.
15. bicycle chainwheel as claimed in claim 1 is characterized in that, described bicycle chainwheel is front sprocket wheel.
16. bicycle chainwheel as claimed in claim 1 is characterized in that, described bicycle chainwheel is rear sprocket wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320295 CN202765218U (en) | 2012-07-03 | 2012-07-03 | Bicycle chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320295 CN202765218U (en) | 2012-07-03 | 2012-07-03 | Bicycle chain wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202765218U true CN202765218U (en) | 2013-03-06 |
Family
ID=47771812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220320295 Expired - Fee Related CN202765218U (en) | 2012-07-03 | 2012-07-03 | Bicycle chain wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202765218U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083461A (en) * | 2014-05-20 | 2015-11-25 | 株式会社岛野 | Bicycle sprocket |
| CN108298014A (en) * | 2017-01-12 | 2018-07-20 | 株式会社岛野 | Bicycle rotating member |
| CN108688767A (en) * | 2017-04-05 | 2018-10-23 | 株式会社岛野 | Bicycle sprocket and bicycle sprocket component |
| CN112977708A (en) * | 2018-07-06 | 2021-06-18 | 株式会社岛野 | Bicycle chain wheel |
-
2012
- 2012-07-03 CN CN 201220320295 patent/CN202765218U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105083461A (en) * | 2014-05-20 | 2015-11-25 | 株式会社岛野 | Bicycle sprocket |
| CN105083461B (en) * | 2014-05-20 | 2019-03-01 | 株式会社岛野 | Bicycle chainwheel |
| CN108298014A (en) * | 2017-01-12 | 2018-07-20 | 株式会社岛野 | Bicycle rotating member |
| US10823269B2 (en) | 2017-01-12 | 2020-11-03 | Shimano Inc. | Bicycle rotor |
| TWI722262B (en) * | 2017-01-12 | 2021-03-21 | 日商島野股份有限公司 | A bicycle derailleur |
| CN108298014B (en) * | 2017-01-12 | 2021-09-21 | 株式会社岛野 | Bicycle rotation piece |
| CN108688767A (en) * | 2017-04-05 | 2018-10-23 | 株式会社岛野 | Bicycle sprocket and bicycle sprocket component |
| CN112977708A (en) * | 2018-07-06 | 2021-06-18 | 株式会社岛野 | Bicycle chain wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20200703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |