CN101327831A - Improved chain sprocket structure - Google Patents
Improved chain sprocket structure Download PDFInfo
- Publication number
- CN101327831A CN101327831A CNA2007101112061A CN200710111206A CN101327831A CN 101327831 A CN101327831 A CN 101327831A CN A2007101112061 A CNA2007101112061 A CN A2007101112061A CN 200710111206 A CN200710111206 A CN 200710111206A CN 101327831 A CN101327831 A CN 101327831A
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- sprocket
- sprocket wheel
- alligatoring
- joint
- joint portion
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Abstract
The invention relates to an improved sprocket structure. The sprocket structure mainly comprises a sprocket; the sprocket has a disc-shaped ring body structure, which is provided with an inner circumference part and an outer circumference part; the outer circumference part of the sprocket is provided with a plurality of tooth parts; a plurality of joint holes pass through the sprocket, and a roughening part is arranged on the sprocket; a joint part is molded to cover the inner circumference part of the sprocket by use of a mode of shooting plastic; and the joint part covers the roughening part and is arranged across the end faces of two sides of the sprocket, so as to connect the joint parts of the end faces of two sides of the sprocket into a whole. As the roughening part is arranged on the sprocket, the weight of the sprocket is lightened; as the inner circumference part of the sprocket is provided with the joint part, the sprocket achieves the efficacy of resisting abrasion and reducing noise; furthermore, the joint part steps over and connects the end faces of two sides of the sprocket into a whole, so as to increase the joint strength of the joint part and the sprocket and ensure that the joint part cannot fall off. The sprocket structure can improve the disadvantages that the prior structure is short of joint adhesive force, insufficient in joint strength, incapable of lightening weight, etc.
Description
Technical field
The present invention relates to a kind of improved chain sprocket structure.
Background technology
People by bike is more and more at present, not only can go in for physical training by bike, make many contact natures of people and sunlight, the more important thing is that bicycle has environmental protection characteristic, it is walking-replacing tool that therefore many working clans select with the bicycle, and bicycle production firm also constantly keeps on improving, in the hope of producing the bicycle of better quality.
Existing bicycle or bicycle are to step on pedal with pin, making the crank that is provided with pedal drive the crank shaft that is incorporated between two cranks whereby rotates forward, make the sprocket wheel drive chain that is fixedly arranged on the crank shaft rotate forward, drive trailing wheel rotates with the chain wheel set of chain gear trailing wheel, the driving bicycle marches forward, and this chain, the fit applications of sprocket wheel is very extensive, as vehicle, all as seen reach the transmission device that sprocket wheel and gear are formed in the machine, it is except the conduction of the speed of can be used as, more can be by the ratio of number of teeth gap between sprocket wheel, reach the effect of deceleration or speedup, therefore at bicycle, often utilize the characteristic of this drive mechanism on the sporting car, reach the purpose of body building.
Existing chain sprocket structure please refer to TaiWan, China application case number No. 095206785 " silent chain wheel construction " case, the rigidity disk body that includes a predetermined circle footpath, its center is that one group of fixed orifice for axle pivot location is set, its radial circumference then is equipped with several sprocket portions at interval, for one group of radially socket transmission of messenger chain row culture; The axial end both sides of this rigidity disk body set firmly an elasticity disk body respectively, this two elasticity disk body in abutting connection with position between the sprocket portion side of rigidity disk body and symmetry be arranged with one and can stride between two parties and establish the receiving space of taking in for this driving chain, form this receiving space bottom side simultaneously to a buffer part of this driving chain bottom side vertical rack support and relatively vertically be resisted against this distolateral correcting portion of driving chain two side parallel shafts pivots; In view of the above, reaching difference improves the transmission noise of driving chain and prolongs the driving chain effect in service life.
Existing structure is to be covered with the elasticity disk body in the sprocket wheel two sides, when chain and sprocket engagement, because chain is to contact with the elasticity disk body, reduces the friction noise of chain and sprocket wheel; But this kind structure is that circular disk body directly is fixedly arranged on the sprocket wheel both sides, and shortcoming combines between disk body and sprocket wheel depends on strength, when chain connects to disk body, is very easy to cause disk body to peel off separation, and loses the minimizing noise result; Moreover, this kind existing structure only reduces noise, and can't alleviate the overall weight of vehicle really, particularly race and use bicycle, trivial minimizing promptly is enough to change victory or defeat for 100 g, and existing structure is only at disk body both sides installings elasticity disk body, not only can't expendable weight, increase load on the contrary, the burden that causes the user to drive.
At the existing problem of above-mentioned existing sprocket wheel, it is more firm how to develop a kind of structure, and the innovation structure that result of use is better is to make great efforts target and the direction that research and development break through.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that prior art exists, and a kind of improved chain sprocket structure is provided, and it can improve the adhesive ability of existing structure shortcoming combination, the anchoring strength deficiency, can't expendable weight etc. shortcoming.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of improved chain sprocket structure mainly comprises a sprocket wheel, it is characterized in that, this sprocket wheel is a plate-like ring body structurc, is provided with an inner peripheral portion and an outer peripheral edges portion, and this sprocket wrap edge portion is equipped with several tooth portions, be equipped with several conjugate foramens on this sprocket wheel, and this sprocket wheel is provided with alligatoring portion; This sprocket wheel inner peripheral portion utilizes the plastics shoot mode to cover moulding one joint portion, and this joint portion is to be covered in the alligatoring portion, and the setting of this joint portion is to cross over sprocket wheel both sides end faces, makes the joint portion of this sprocket wheel both sides end face be connected in one; Be provided with alligatoring portion by this sprocket wheel, to alleviate the weight of this sprocket wheel; And be provided with the joint portion by this sprocket wheel inner peripheral portion, make this sprocket wheel reach the effect of abrasion resisting, minimizing noise; Moreover this joint portion is to cross over sprocket wheel both sides end face and be connected in one, to increase the anchoring strength of joint portion and sprocket wheel, the joint portion is unlikely comes off.
Aforesaid improved chain sprocket structure, wherein the joint portion is to be located at the inner peripheral portion of sprocket wheel and to cover in alligatoring portion, and this joint portion is not covered on the conjugate foramen.
Aforesaid improved chain sprocket structure, wherein alligatoring portion comprises the first alligatoring portion and the second alligatoring portion.
Aforesaid improved chain sprocket structure, wherein the first alligatoring portion is the poroid alligatoring moulding of fishnet.
Aforesaid improved chain sprocket structure, wherein the second alligatoring portion is the alligatoring moulding of tool marks shape.
Aforesaid improved chain sprocket structure, its middle sprocket is provided with through hole.
Aforesaid improved chain sprocket structure, wherein the joint portion is located at the inner peripheral portion of sprocket wheel and is covered in alligatoring portion, and this joint portion is not to be covered on conjugate foramen and the through hole.
Existing structure is to utilize circular elasticity disk body to be locked on the sprocket wheel, can't engage really, when chain and elasticity disk body against the time, make this elasticity disk body peel off disengaging easily; The present invention utilizes the setting of this alligatoring portion, sprocket weight is alleviated, and be provided with the joint portion by this sprocket wheel inner peripheral portion, when making this sprocket wheel and chain engages, utilize this joint portion to replace chain, to reduce the metal friction of chain and sprocket wheel, the wearing and tearing that alleviate chain and sprocket wheel reach the noise effect that reduces metal friction; Moreover, because this this joint portion is to be arranged at sprocket wheel inner peripheral portion and to cross over positive and negative to link to each other, this joint portion is firmly covered on sprocket wheel, when chain and joint portion against the time, this joint portion is unlikely easily and comes off.
The invention has the beneficial effects as follows, can improve the adhesive ability of existing structure shortcoming combination, the anchoring strength deficiency, can't expendable weight etc. shortcoming
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic appearance of the improved chain sprocket structure reverse side of the present invention alligatoring portion.
Fig. 2 is the generalized section of AB line segment shown in Figure 1.
Fig. 3 is the schematic appearance that the improved chain sprocket structure reverse side of the present invention covers the joint portion.
Fig. 4 is the generalized section of CD line segment shown in Figure 3.
Fig. 5 is the schematic appearance of the positive alligatoring of the improved chain sprocket structure of the present invention portion.
Fig. 6 is the schematic appearance that the improved chain sprocket structure of the present invention front covers the joint portion.
Fig. 7 is the solid combination scheme drawing of the improved chain sprocket structure of the present invention.
The number in the figure explanation:
1------sprocket wheel 11------inner peripheral portion
111------joint portion 12------outer peripheral edges portions
121------tooth portion 2------conjugate foramens
3------through hole 4------alligatoring portions
41------first alligatoring portion
42------second alligatoring portion
5------crank
The specific embodiment
The invention relates to a kind of improved chain sprocket structure, please refer to Fig. 1 to shown in Figure 4, it mainly comprises a sprocket wheel 1, this sprocket wheel 1 is to be installed on the bicycle, and is assembled with crank 5, and this sprocket wheel 1 is the plate-like ring body structurc, be made as the front with sprocket wheel 1 with the end face that crank 5 assemblings engage, opposite end face is made as reverse side, and Fig. 1 and Fig. 3 are to be that embodiment describes with the reverse side, wherein:
This sprocket wheel 1 is to be equipped with some conjugate foramens 2, and this conjugate foramen 2 is assembled for bicycle crank 5, and also is equipped with some through holes 3 on this sprocket wheel 1, and this through hole 3 is for closing-up, so that chain switches different sprocket wheels 1 to carry out speed change;
This sprocket wheel 1 is provided with an outer peripheral edges portion 12 and an inner peripheral portion 11, and the outer peripheral edges portion 12 of this sprocket wheel 1 is the equidistant plurality of teeth portion 121 that is equipped with, and this tooth portion 121 is for the cycle chain engagement, advances to drive bicycle by these tooth portion 121 engagement chains;
This sprocket wheel 1 reverse side is concaved with some alligatoring portion 4, and this alligatoring portion 4 comprises the first alligatoring portion 4
1 and the second alligatoring portion 42, this first alligatoring portion 41 is that the poroid alligatoring of fishnet forms structure, the alligatoring that this second alligatoring portion 42 is the tool marks shape forms structure, the degree of depth of the first alligatoring portion 41 is greater than the second alligatoring portion 42, as shown in Figure 1, this first alligatoring portion 41 is top and the lower positions that are arranged at sprocket wheel 1 icon, and this first alligatoring portion 41 is to be that the point symmetry mode is provided with sprocket wheel 1 center; And this second alligatoring portion 42 is arranged at sprocket wheel 1 diagram top, below, left and right-hand respectively, and this second alligatoring portion 42 is to be that the point symmetry mode is provided with sprocket wheel 1 center.
As shown in Figures 3 and 4, the inner peripheral portion 11 of this sprocket wheel 1 front and reverse side covers a joint portion 111 with the plastics injection molding method, this joint portion 111 is to adopt the plastic material of high abrasion to constitute, this joint portion 111 is to be covered in the alligatoring portion 4, the first alligatoring portion 41 of this sprocket wheel 1 reverse side and the second alligatoring portion 42 are filled up and be higher than the original surface of sprocket wheel 1, and this joint portion 111 is the surfaces that are higher than tooth portion 121, can be resisted against on the joint portion 111 when so making chain and 121 engagements of tooth portion; And this joint portion 111 is not covered in through hole 3, conjugate foramen 2 and the tooth portion 121, and this through hole 3, conjugate foramen 2 and tooth portion 121 can normally be used; Again, the setting of this joint portion 111 is to extend and cross over sprocket wheel 1 positive and negative in inner peripheral portion 11, and the joint portion 111 that makes this sprocket wheel 1 both sides end face is to link to each other in inner peripheral portion 11, improves the strength that combines of joint portion 111 and sprocket wheel 1 whereby.
Setting by above-mentioned this alligatoring portion 4, make sprocket wheel 1 weight saving, and be provided with joint portion 111 by this sprocket wheel 1 inner peripheral portion 11, when making this sprocket wheel 1 with chain engages, utilize this joint portion 111 to replace chain, to reduce the metal friction of chain and sprocket wheel 1, alleviate the wearing and tearing of chain and sprocket wheel, and reach the noise effect that reduces metal friction; Moreover, because this joint portion 11
The 1st, cross over sprocket wheel 1 inner peripheral portion, 11 both sides end faces and be connected in one, so can increase the anchoring strength of joint portion 111 and sprocket wheel 1, when joint portion 111 contacted with chain, this joint portion 111 was unlikely easily and comes off.
As shown in Figure 5, the left in this sprocket wheel 1 front, right-hand, top and below are to be provided with the second alligatoring portion 42, and can find out that the first alligatoring portion, 41 degree of depth in this sprocket wheel 1 front are for shallow than the reverse side second alligatoring portion 42 by Fig. 2 in right-hand; And by shown in Figure 6, this joint portion 111 is the inner peripheral portions 11 that cover in sprocket wheel 1 front and reverse side, and extend and cross over the positive and negative of sprocket wheel 1 towards sprocket wheel 1 inner peripheral portion 11, as shown in Figure 4, the joint portion 111 of these sprocket wheel 1 both ends of the surface is to link to each other in inner peripheral portion 11, and this joint portion 111 is the first alligatoring portions 41 that cover this sprocket wheel 1 front; Again, be same as the setting of this sprocket wheel 1 reverse side, this joint portion 111 is not covered in through hole 3, conjugate foramen 2 and the tooth portion 121; Be arranged at sprocket wheel 1 inner peripheral portion 11 by this joint portion 111 and cross over positive and negative and link to each other, this joint portion 111 is firmly covered on sprocket wheel 1, and reach above-mentioned many effects.
Please refer to shown in Figure 7, after this sprocket wheel 1 is covered by joint portion 111, because this joint portion 111 is not covered on through hole 3 and the conjugate foramen 2, and painstakingly get around the setting of through hole 3 and conjugate foramen 2, make this sprocket wheel 1 be able to engage with bicycle crank 5 certain assemblings, and the tooth portion 121 of this sprocket wheel 1 is not covered by also joint portion 111, because being the plastics by high abrasion, this joint portion 111 constitutes, when chain engages during in tooth portion 121, be to be resisted against on the joint portion 111, reduce the metal friction of chain and sprocket wheel 1 whereby, not only can reduce the metal consume of sprocket wheel 1, also can significantly reduce noise; More, this joint portion 111 is firmly covered on sprocket wheel 1 because this this joint portion 111 is to be arranged at sprocket wheel 1 inner peripheral portion 11 and to cross over positive and negative to link to each other, when chain and joint portion 111 against the time, this joint portion 111 is unlikely easily and comes off.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
In sum, the present invention is on structure design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant patent of invention important document is so mention application in accordance with the law.
Claims (7)
1, a kind of improved chain sprocket structure mainly comprises a sprocket wheel, it is characterized in that,
This sprocket wheel is a plate-like ring body structurc, is provided with an inner peripheral portion and an outer peripheral edges portion, and this sprocket wrap edge portion is equipped with several tooth portions, be equipped with several conjugate foramens on this sprocket wheel, and this sprocket wheel is provided with alligatoring portion;
This sprocket wheel inner peripheral portion utilizes the plastics shoot mode to cover moulding one joint portion, and this joint portion is to be covered in the alligatoring portion, and the setting of this joint portion is to cross over sprocket wheel both sides end faces, makes the joint portion of this sprocket wheel both sides end face be connected in one.
2, improved chain sprocket structure according to claim 1 it is characterized in that described joint portion is to be located at the inner peripheral portion of sprocket wheel and to cover in alligatoring portion, and this joint portion is not covered on the conjugate foramen.
3, improved chain sprocket structure according to claim 1 and 2 is characterized in that described alligatoring portion comprises the first alligatoring portion and the second alligatoring portion.
4, improved chain sprocket structure according to claim 3 is characterized in that the described first alligatoring portion is the poroid alligatoring moulding of fishnet.
5, improved chain sprocket structure according to claim 3 is characterized in that the described second alligatoring portion is the alligatoring moulding of tool marks shape.
6, improved chain sprocket structure according to claim 1 is characterized in that described sprocket wheel is provided with through hole.
7, improved chain sprocket structure according to claim 6 it is characterized in that described joint portion is located at the inner peripheral portion of sprocket wheel and covers in alligatoring portion, and this joint portion is not to be covered on conjugate foramen and the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101112061A CN101327831A (en) | 2007-06-18 | 2007-06-18 | Improved chain sprocket structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101112061A CN101327831A (en) | 2007-06-18 | 2007-06-18 | Improved chain sprocket structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101327831A true CN101327831A (en) | 2008-12-24 |
Family
ID=40203892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101112061A Pending CN101327831A (en) | 2007-06-18 | 2007-06-18 | Improved chain sprocket structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101327831A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419893A (en) * | 2012-05-18 | 2013-12-04 | 株式会社岛野 | Sprocket for bike |
| CN103639659A (en) * | 2013-11-29 | 2014-03-19 | 重庆秋收机械有限公司 | Motorcycle sprocket regeneration method |
| CN112977708A (en) * | 2018-07-06 | 2021-06-18 | 株式会社岛野 | Bicycle chain wheel |
-
2007
- 2007-06-18 CN CNA2007101112061A patent/CN101327831A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419893A (en) * | 2012-05-18 | 2013-12-04 | 株式会社岛野 | Sprocket for bike |
| CN103639659A (en) * | 2013-11-29 | 2014-03-19 | 重庆秋收机械有限公司 | Motorcycle sprocket regeneration method |
| CN103639659B (en) * | 2013-11-29 | 2015-12-02 | 重庆秋收机械有限公司 | Motorcycle sprocket regeneration method |
| CN112977708A (en) * | 2018-07-06 | 2021-06-18 | 株式会社岛野 | Bicycle chain wheel |
| CN112977708B (en) * | 2018-07-06 | 2022-10-25 | 株式会社岛野 | Bicycle chain wheel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |