CN204223138U - The fluted disc structure improved - Google Patents
The fluted disc structure improved Download PDFInfo
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- CN204223138U CN204223138U CN201420635366.1U CN201420635366U CN204223138U CN 204223138 U CN204223138 U CN 204223138U CN 201420635366 U CN201420635366 U CN 201420635366U CN 204223138 U CN204223138 U CN 204223138U
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- place
- double wedge
- chain
- tooth group
- groove
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Abstract
A kind of fluted disc structure of improvement, this fluted disc comprises a disk body and and is positioned at the tooth group located around this disk body, this tooth group have multiple be located at place around this disk body and with equidistant around and formed double wedge, and to be multiplely located at respectively between this each double wedge and the recess formed in circular arc concavity, and be respectively provided with in this tooth group two sides place multiple in chain wheel profile state and formed towards sunken inside agree with groove, this respectively agrees with two recesses and a double wedge place that groove lays respectively at this tooth group, makes to be positioned at the thickness that this thickness respectively agreeing with the double wedge at groove place is less than the double wedge being positioned at this tooth group place; Whereby, make the firm double wedge being posted by this tooth group place of chain energy and be positioned at the double wedge that this respectively agrees with groove place, reduce this chain and respectively agree with gap on groove in this tooth group and this, can the more smooth and easy and situation reducing this chain releasing occur when the transmission or speed change to improve chain.
Description
Technical field
The utility model relates to a kind of fluted disc structure of improvement, espespecially a kind of bicycle place being applied to tool speed changing function, more smooth and easy and reduce the fluted disc that this chain releasing situation occurs when the transmission or speed change for chain.
Background technology
Under current state inner circumferential stops enforcement on the two, related driving to be lain fallow the prevailing of agitation holiday, and wherein to save money with economy and the bicycle having body-building effect concurrently is the most popular liked, particularly today, industrial and commercial social work pressure was busy, in the long-time Dai Zuo office of working clan, physical function constantly declines, therefore more and more people advocates and drives bicycle, drive bicycle not only to exercise physique, and make people can many contact natures and sunlight, the more important thing is that bicycle has environmental protection characteristic, therefore many working clans select to take bicycle as walking-replacing tool, and bicycle production firm constantly keeps on improving, in the hope of producing the bicycle of more good merchantable brand matter.
Generally existing fluted disc is installed on bicycle, it is lived half of by chain circle and is mutually engaged and by the drive of chain or can drives chain, but chain is when transmission, it starts to be engaged with fluted disc locates outward extending part and the tight state of nonideal straight line, but be subject to the sagging bowed state of gravitating, therefore its with rotate fluted disc, its fluted disc usually interferes in time starting to be engaged, and have fixing frequency, though interference like this is little but often makes to feel to have some setbacks during rider's pushes pedals in the middle of transmission process, therefore be necessary that the generation reducing interference is to reduce the sense of discomfort of rider.
Therefore, relevant dealer is had to carry out Improvement for this disappearance, as TaiWan, China 93 years 09 month 11 days announce the new patent of No. M243426 " can be used for the chain drum of bicycle ", disclose a kind of chain drum that can be used for bicycle, this chain drum is provided with disk body, disk body stretches several sprocket continuously in outer circumferential sides, sprocket and disk body connect to stretch to be located as root, and this disk body has both ends of the surface, at least one end face of disk body comparatively sprocket forms evagination shape, this disk body forms this end face apical margin of evagination shape, at the root towards at least one chain drum, form the support sector of an external convex arc shape, supply this support sector can be concavo-convex relative with radian in the chain sheet of chain, so, just support on the downside of inner chain sheet in recessed arcuate positions by this support sector, the inner arc place of this fluted disc and chain is made to increase actv. area of contact, to reduce abrasion speed, rigidity when strengthening rigidity and support chain gear and intensity, more difficult de-chain when allowing chain be engaged, to guarantee good failure-free transmission usefulness.
According to above-mentioned common structure, the support portion of this chain case of bicycle is only for the downside being supported in inner chain sheet, it cannot support the downside of outer chain sheet, therefore the downside of this outer chain sheet is not subject to any support in the state be suspended on outside chain drum, thus whole chain is made easily to produce the stress of torsion, distortion in outer chain sheet place, and then increase the wearing and tearing of itself and sprocket, and the situation of the chain that easily therefore falls, and then affect its transmission usefulness, upper in use is a large drawback problem in fact, and is urgently improved.
Summary of the invention
Main purpose of the present utility model is: provide a kind of bicycle place being applied to tool speed changing function, more smooth and easy and reduce the fluted disc that this chain releasing situation occurs when the transmission or speed change for chain.
For reaching above-mentioned purpose, the fluted disc structure of a kind of improvement of the utility model, this fluted disc comprises a disk body and and is positioned at the tooth group located around this disk body, wherein this tooth group has and is multiplely located at place around this disk body and with the equidistant double wedge formed around kenel projection outwardly, and to be multiplely located at respectively between this each double wedge and the recess formed in circular arc concavity, it is characterized in that:
This tooth group two sides place be respectively provided with multiple in chain wheel profile state and formed towards sunken inside agree with groove, this respectively agrees with two recesses and a double wedge place that groove lays respectively at this tooth group, makes to be positioned at the thickness that this thickness respectively agreeing with the double wedge at groove place is less than the double wedge being positioned at this tooth group place, and this agrees with groove and more extends to this disk body two sides place, whereby, utilize and be positioned at the thickness of the double wedge at this tooth group place and this respectively agrees with the thickness of the double wedge at groove place, the thickness of the two its double wedge is inconsistent, and be engaged in the double wedge at this tooth group place for this chain is sheathed and is positioned at the double wedge place that this respectively agrees with groove place, make the firm double wedge being posted by this tooth group place of this chain energy and be positioned at the double wedge that this respectively agrees with groove place, it reduces this chain and respectively agrees with gap on groove in this tooth group and this, and the collocation double wedge that is positioned at this tooth group be positioned at this dual-side place, double wedge top agreeing with groove and be all respectively provided with corresponding guiding angle, make this chain take advantage of a situation carrying out and switch on this fluted disc place and reach speed change and switch effect, more smooth and easy and reduce the chain situation that falls and occur when the transmission to improve this chain.
Due to the fluted disc structure that the utility model improves, this fluted disc comprises a disk body and and is positioned at the tooth group located around this disk body, wherein this tooth group has and is multiplely located at place around this disk body and with the equidistant double wedge formed around kenel projection outwardly, and to be multiplely located at respectively between this each double wedge and the recess formed in circular arc concavity, this tooth group two sides place be respectively provided with multiple in chain wheel profile state and formed towards sunken inside agree with groove, this respectively agrees with two recesses and a double wedge place that groove lays respectively at this tooth group, make to be positioned at the thickness that this thickness respectively agreeing with the double wedge at groove place is less than the double wedge being positioned at this tooth group place, and this agrees with groove and more extends to this disk body two sides place, moreover, the double wedge being positioned at this tooth group be positioned at this dual-side place, double wedge top agreeing with groove and be all respectively provided with corresponding guiding angle,
Whereby, utilize and be positioned at the thickness of the double wedge at this tooth group place and this respectively agrees with the thickness of the double wedge at groove place, the thickness of the two its double wedge is inconsistent, and for the sheathed double wedge being engaged in this tooth group place of this chain be positioned at this respectively agree with the double wedge place at groove place time, make the firm double wedge being posted by this tooth group place of this chain energy and be positioned at the double wedge that this respectively agrees with groove place, reduce this chain and respectively agree with gap on groove in this tooth group and this, and the collocation double wedge that is positioned at this tooth group be positioned at this dual-side place, double wedge top agreeing with groove and be all respectively provided with corresponding guiding angle, make this chain take advantage of a situation carrying out and switch on this fluted disc place and reach speed change and switch effect, and then a kind of bicycle place being applied to tool speed changing function is provided, more smooth and easy and reduce the fluted disc that this chain releasing situation occurs when the transmission or speed change for chain.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the utility model fluted disc.
Fig. 2 is the tooth group close-up schematic view of the utility model fluted disc.
Fig. 3 is the front elevation of the utility model fluted disc.
Fig. 4 is the Partial enlarged side view of the utility model fluted disc.
Fig. 5 is the using state schematic diagram of the utility model fluted disc preferred embodiment.
Fig. 6 is the exploded perspective view of the utility model fluted disc and chain.
Fig. 7 is the partial front elevation view of the utility model fluted disc occlusion chain.
Fig. 8 is the amplification front elevation that the double wedge of the utility model fluted disc and the wide chain hole of chain and narrow chain hole are combined.
Fig. 9 is the assembled sectional view that the double wedge of the utility model fluted disc is engaged with the wide chain hole of chain.
Figure 10 is the assembled sectional view that the double wedge of the utility model fluted disc is engaged with the narrow chain hole of chain.
Detailed description of the invention
First, referring to shown in Fig. 1 to Fig. 3, is the fluted disc structure that the utility model improves; This fluted disc 1 comprises the tooth group 12 that a disk body 11 and is positioned at this disk body 11 surrounding place; Wherein:
This disk body 11, overall in the form of annular discs and made by metal material, this disk body 11 is provided with one and is positioned at this disk body 11 centre and perforation 111 in penetration state; Multiple preformed hole group 112 being positioned at this perforation 111 surrounding place, this each preformed hole group 112 be by multiple hole 1121 that is pivoted with equidistant around kenel; And multiple elongated hole 113 being positioned at this perforation 111 surrounding place; And
This tooth group 12, be positioned at this disk body 11 surrounding place, this tooth group 12 has multiplely is located at this disk body 11 surrounding place and with the equidistant double wedge 121 formed around kenel projection outwardly, and is multiplely located at the recess 122 formed between this each double wedge 121 and in circular arc concavity respectively; Wherein this tooth group 12 two sides place be respectively provided with multiple in chain wheel profile state and formed towards sunken inside agree with groove 123, this respectively agrees with two recess 122 and double wedge 121 places that groove 123 lays respectively at this tooth group 12, makes to be positioned at the thickness T2 that this thickness T1 respectively agreeing with the double wedge 121 ' at groove 123 place is less than the double wedge 121 being positioned at this tooth group 12 place; And this agrees with groove 123 and more extends to this disk body 11 two sides place; Moreover, the double wedge 121 being positioned at this tooth group 12 be positioned at this dual-side place, double wedge 121 ' top agreeing with groove 123 and be all respectively provided with corresponding guiding angle 124,124 '.
Continuous refer to shown in Fig. 4 to Figure 10, the fluted disc structure improved for the utility model and illustrating further; The utility model is applied to bicycle 2 place of tool speed changing function, more smooth and easy and reduce the fluted disc 1 that the chain situation that falls occurs when the transmission or speed change for chain 3; This fluted disc 1 comprises the tooth group 12 that a disk body 11 and is positioned at this disk body 11 surrounding place; Wherein this disk body 11 is provided with one and is positioned at this disk body 11 centre and in the perforation 111 of penetration state; Multiple preformed hole group 112 being positioned at this perforation 111 surrounding place, this each preformed hole group 112 be by multiple hole 1121 that is pivoted with equidistant around kenel; And multiple elongated hole 113 being positioned at this perforation 111 surrounding place; And this tooth group 12 has and is multiplely located at this disk body 11 surrounding place and with the equidistant double wedge 121 formed around kenel projection outwardly, and to be multiplely located at respectively between this each double wedge 121 and the recess 122 formed in circular arc concavity, and be respectively provided with in this tooth group 12 two sides place multiple in chain wheel profile state and formed towards sunken inside agree with groove 123, this respectively agrees with two recess 122 and double wedge 121 places that groove 123 lays respectively at this tooth group 12, makes to be positioned at the thickness T2 that this thickness T1 respectively agreeing with the double wedge 121 ' at groove 123 place is less than the double wedge 121 being positioned at this tooth group 12 place; And this agrees with groove 123 and more extends to this disk body 11 two sides place; The double wedge 121 being even positioned at this tooth group 12 be positioned at this dual-side place, double wedge 121 ' top agreeing with groove 123 and be all respectively provided with corresponding guiding angle 124,124 ';
Moreover, the perforation 111 of disk body 11 centre of this fluted disc 1 of the utility model supplies to combine around the base portion of the crank 21 of external bicycle 2, this fluted disc 1 is made to be positioned at the other place of Five-way tube 22 of this bicycle 2 whereby, and sheathed engagement one chain 3 can switch alternately around this fluted disc 1, to reach pick-off gear ratio, and this chain 3 rear is trailing wheel 23 place being sheathed on bicycle 2, drive the rear tooth disk 24 of trailing wheel 23; Wherein this chain 3 has multiple outer chain sheet 31 and multiple inner chain sheet 32 linked, and formed respectively in the plurality of outer chain sheet 31 place and the plurality of inner chain sheet 32 multiple sheathed be engaged in double wedge 121 place of this tooth group 12 wide chain hole 311 and multiple sheathed narrow chain hole 321 being engaged in the double wedge 121 ' place that this respectively agrees with groove 123, and the profile kenel of multiple inner chain sheets 32 of this chain 3 is consistent with this profile kenel of respectively agreeing with groove 123, as shown in Fig. 4 to Fig. 8;
Whereby, utilize and be positioned at the thickness T2 of the double wedge 121 at this tooth group 12 place and this respectively agrees with the thickness T1 of the double wedge 121 ' at groove 123 place, double wedge 121 both it, the thickness T2 of 121 ', T1 is inconsistent, and the sheathed double wedge 121 being engaged in this tooth group 12 place in the wide chain hole 311 linking and formed for multiple outer chain sheets 31 of this chain 3 and multiple inner chain sheet 32 and narrow chain hole 321 be positioned at this respectively agree with the double wedge 121 ' place at groove 123 place time, make the firm double wedge 121 being posted by this tooth group 12 place of this chain 3 energy and be positioned at the double wedge 121 ' that this respectively agrees with groove 123 place, it reduces this chain 3 and respectively agrees with gap on groove 123 at this tooth group 12 and this, and the collocation double wedge 121 that is positioned at this tooth group 12 be positioned at this dual-side place, double wedge 121 ' top agreeing with groove 123 and be all respectively provided with corresponding guiding angle 124, 124 ', as Fig. 9, shown in Figure 10, when rider steps on bicycle pedal, this fluted disc 1, in rotary state, makes this chain 3 take advantage of a situation carrying out switching on this fluted disc 1 place and reaches speed change and switch effect, more smooth and easy and reduce the object that chain releasing situation occurs during to improve its transmission.
Comprehensive the above, a kind of fluted disc structure of improvement had not seen again all books and periodicals or open use, really met new patent application important document.Need Chen Ming's, the above know-why being specific embodiment of the utility model and using, if according to the change that conception of the present utility model is done, its function produced do not exceed yet specification sheets and graphic contained spiritual time, in scope of the present utility model, all should close and give Chen Ming.
Claims (6)
1. the fluted disc structure improved, this fluted disc comprises a disk body and and is positioned at the tooth group located around this disk body, wherein this tooth group has and is multiplely located at place around this disk body and with the equidistant double wedge formed around kenel projection outwardly, and to be multiplely located at respectively between this each double wedge and the recess formed in circular arc concavity, it is characterized in that:
This tooth group two sides place be respectively provided with multiple in chain wheel profile state and formed towards sunken inside agree with groove, this respectively agrees with two recesses and a double wedge place that groove lays respectively at this tooth group, makes to be positioned at the thickness that this thickness respectively agreeing with the double wedge at groove place is less than the double wedge being positioned at this tooth group place, and this agrees with groove and more extends to this disk body two sides place, whereby, utilize and be positioned at the thickness of the double wedge at this tooth group place and this respectively agrees with the thickness of the double wedge at groove place, the thickness of the two its double wedge is inconsistent, and be engaged in the double wedge at this tooth group place for this chain is sheathed and is positioned at the double wedge place that this respectively agrees with groove place, make the firm double wedge being posted by this tooth group place of this chain energy and be positioned at the double wedge that this respectively agrees with groove place, it reduces this chain and respectively agrees with gap on groove in this tooth group and this, and the collocation double wedge that is positioned at this tooth group be positioned at this dual-side place, double wedge top agreeing with groove and be all respectively provided with corresponding guiding angle, make this chain take advantage of a situation carrying out and switch on this fluted disc place and reach speed change and switch effect, more smooth and easy and reduce the chain situation that falls and occur when the transmission to improve this chain.
2. the fluted disc structure improved as claimed in claim 1, it is characterized in that: wherein this chain has multiple outer chain sheet and multiple inner chain sheet linked, and formed respectively in the plurality of outer chain sheet place and the plurality of inner chain sheet multiple sheathed be engaged in the double wedge place of this tooth group wide chain hole and be multiplely sheathedly engaged in the narrow chain hole that this respectively agrees with the double wedge place of groove.
3. the fluted disc structure improved as claimed in claim 2, is characterized in that: wherein the profile kenel of multiple inner chain sheets of this chain is consistent with this profile kenel of respectively agreeing with groove.
4. the fluted disc structure improved as claimed in claim 2, is characterized in that: the double wedge being wherein positioned at this tooth group be positioned at this dual-side place, double wedge top agreeing with groove and be all respectively provided with corresponding guiding angle.
5. the fluted disc structure improved as claimed in claim 1, is characterized in that: wherein this disk body is provided with one and is positioned at this disk body centre and in the perforation of penetration state; Multiplely be positioned at the preformed hole group located around this perforation; And be multiplely positioned at the elongated hole located around this perforation.
6. the fluted disc structure improved as claimed in claim 5, is characterized in that: wherein each preformed hole group of this disk body be by multiple hole that is pivoted with equidistant around kenel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635366.1U CN204223138U (en) | 2014-10-29 | 2014-10-29 | The fluted disc structure improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635366.1U CN204223138U (en) | 2014-10-29 | 2014-10-29 | The fluted disc structure improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204223138U true CN204223138U (en) | 2015-03-25 |
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ID=52921259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420635366.1U Expired - Fee Related CN204223138U (en) | 2014-10-29 | 2014-10-29 | The fluted disc structure improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204223138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622300A (en) * | 2017-03-17 | 2018-10-09 | 株式会社岛野 | Bicycle chainwheel and bicycle chain wheel assembly |
-
2014
- 2014-10-29 CN CN201420635366.1U patent/CN204223138U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622300A (en) * | 2017-03-17 | 2018-10-09 | 株式会社岛野 | Bicycle chainwheel and bicycle chain wheel assembly |
| CN108622300B (en) * | 2017-03-17 | 2020-10-02 | 株式会社岛野 | Bicycle sprocket and bicycle sprocket assembly |
| TWI742252B (en) * | 2017-03-17 | 2021-10-11 | 日商島野股份有限公司 | Bicycle sprocket and bicycle sprocket assembly |
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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: 20150325 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |