CN2677286Y - Bicycle rear transmission chain - Google Patents
Bicycle rear transmission chain Download PDFInfo
- Publication number
- CN2677286Y CN2677286Y CNU2004200197774U CN200420019777U CN2677286Y CN 2677286 Y CN2677286 Y CN 2677286Y CN U2004200197774 U CNU2004200197774 U CN U2004200197774U CN 200420019777 U CN200420019777 U CN 200420019777U CN 2677286 Y CN2677286 Y CN 2677286Y
- Authority
- CN
- China
- Prior art keywords
- spare
- supporting frame
- front frame
- poppet
- chain
- 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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- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
The utility model relates to a bicycle rear transmission chain. The connecting board of the existing product is a parallel setup relative to the supporting frame, and the easy dislocation of the chain can affect the accuracy of gear shifting. The utility model comprises a front supporting frame, a rear supporting frame and two parallel connecting boards. The front supporting frame axially connects with an elastic reset bicycle fork connecting board, the rear supporting frame axially connects with an elastic reset chain guiding device. The bicycle rear transmission chain is characterized in that the rear supporting frame which is L-shaped is provided with an upper inclined part, the parallel connecting board is axially connected between the rear supporting frame and the front supporting frame slantingly along the upper inclined part, and an inner cavity which is provided with a reset spring is formed. The parallel connecting board is arranged slantingly relative to the supporting frame, which has vertical, front and rear, inside and outside displacement effects, the guide wheel can aim the chain wheel slice easily with gear shifting, which is convenient to the exact placement.
Description
[technical field]
The utility model relates to the gearshift of bicycle, specifically bicycle derailleur.
[background technology]
But mostly the bicycle of gear shift is the coaxial different sprocket wheel of a plurality of diameters that sets gradually on its trailing wheel, during use, dial the chain device with chain respectively with the sprocket engagement of different-diameter to change the chain-drive transmitting ratio.Notification number is that the patent of invention specification sheets of CN1095781C discloses the technical scheme of a kind of " rear shifting device support ", the implementation that relates to whole rear shifting device in this technical scheme, yet, parallel connecting panel lateral shaft in the related rear shifting device is connected between two stands spare, and the rotational plane (be the two rotate determined plane around its rotating shaft vertical with its rotating shaft) that promptly is used to connect the parallel attaching parts of strut member and frame member is parallel to each other with the determined plane of axis of strut member and frame member.In gearshift procedure, chain guide is only producing displacement with strut member relative to frame member under the traction of hauling rope on the both direction: promptly do moving on inside and outside swing and the fore-and-aft direction, chain is replaced between the sprocket wheel of different-diameter, reach the purpose of gear shift.But because the diameter of each sprocket wheel difference and forward and backward sprocket wheel be not or not same plane, chain is not parallel moving when replacing between forward and backward sprocket wheel, produce difficult phenomenon of accurately aiming at sprocket piece, the chain dislocation in the gearshift procedure takes place, influence accurate, the alerting ability of gear shift.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the technological deficiency that existing product exists, provide a kind of gear shift accurately, bicycle derailleur flexibly.For this reason, the utility model is taked following technical scheme:
Bicycle derailleur, comprise front frame spare, after poppet spare and two parallel connecting panels, but the car jaw connecting plate of the elastic reset that is coupling on the front frame spare, but the chain guide of the elastic reset that is coupling on the after poppet spare, it is characterized in that described after poppet spare is L-shaped and be provided with upper inclined portion, parallel connecting panel is coupling between after poppet spare and front frame spare along upper inclined portion is oblique, is provided with return spring in the inner chamber of its formation.Parallel connecting panel is along the oblique setting of upper inclined portion, make acute angle angle of axis tilt of the forward and backward relatively frame member of connecting panel, therefore when parallel connecting panel during around its rotating shaft rotation, can drive the relative front frame spare of after poppet spare and on vertical, front and back, inside and outside three directions, produce displacement, satisfy the purpose of accurate, flexible gear shift.And, by the rotational angle that changes car jaw connecting plate can further improve vertically, the displacement effect of front and back, inside and outside three directions.
As the further of technique scheme improved and replenish, can take following concrete scheme:
Described bicycle derailleur is characterized in that front frame spare is provided with the portion of having a down dip, and parallel connecting panel is connected on the portion of having a down dip and the upper inclined portion by the bearing pin at its two ends.The setting of upper and lower rake, the installation of being convenient to two connecting panels connects and action, and according to concrete action request, can be provided with by upper and lower rake in advance that two connecting panels are gone up relatively, after poppet spare connection location.
Described bicycle derailleur is characterized in that described chain guide comprises inner guide plate, outer guide plate and is connected to dial sprocket wheel and guide wheel between the inside and outside guide plate.The coupling end of car jaw connecting plate is provided with car jaw interface and fastener hole.
Described bicycle derailleur is characterized in that a connecting panel in the described parallel connecting panel is provided with tractive unit; Front frame spare is provided with guide roller and universal cable guiding device; Described universal cable guiding device comprises that lateral shaft is connected on orienting lug on the front frame spare and longitudinal axis and is connected on conductor barrel on the orienting lug, and described orienting lug and conductor barrel are provided with the hauling rope through hole.The conductor barrel, the through hole on the orienting lug that hauling rope can pass universal cable guiding device successively is on track adjusting wheel is connected tractive unit on the connecting panel.During gear shift, hauling rope can draw connecting panel flexibly, realizes the transposition of chain by the action of connecting panel.
The utility model is coupling between after poppet spare and front frame spare parallel connecting panel is oblique, the rotational plane of connecting panel and the determined plane of axis of forward and backward frame member are intersected with the acute angle angle, be equivalent to that two connecting panels are gone up relatively, acute angle angle of the axis tilt of after poppet spare, this oblique setting, make guide wheel be easy to aim at sprocket piece, can realize vertically, the displacement on the front and back, inside and outside three directions, have multi-faceted mobile effect, be convenient to accurate location.Therefore when two connecting panels when its rotating shaft is rotated, can drive the relative front frame spare of after poppet spare and on vertical, front and back, inside and outside three directions, produce displacement, satisfy accurately, the purpose of flexible gear shift.
[description of drawings]
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of front frame spare.
Fig. 3 is the back view of Fig. 2.
Fig. 4 is the upward view of Fig. 2.
Fig. 5 is the structural representation of after poppet spare.
Fig. 6 is the right elevation of Fig. 5.
Fig. 7 is the upward view of Fig. 5.
[specific embodiment]
Bicycle derailleur shown in Figure 1 comprises that front frame spare 2, after poppet spare 4 and two parallel shafts are connected on the connecting panel 31,32 between the forward and backward frame member, but the car jaw connecting plate 1 of the elastic reset that is coupling on the front frame spare 2, the coupling end of this car jaw connecting plate is provided with car jaw interface and fastener hole.But the chain guide 5 of the elastic reset that is coupling on the after poppet spare 4, they connect in a usual manner, be as described in the patent of invention of CN1095781C as notification number, be provided with return spring (" four-bar linkage " that formation is commonly called as) in the inner chamber that two parallel connecting panels form.Different in the past be: this uses novel on front frame spare 2 the setting portion 21 (seeing Fig. 2～4) that has a down dip, upper inclined portion 41 (seeing Fig. 5～7) is set on after poppet spare 4, inside and outside two connecting panels, 31,32 bearing pins by its two ends are connected on portion of having a down dip 21 and the upper inclined portion 41, thereby make the rotational plane of connecting panel 31,32 and the determined Plane intersects of axis of forward and backward frame member 2,4 constitute the acute angle angle; Extend tractive unit 311 on the interior connecting panel 31; Be coupling on the front frame spare 2 guide roller 6 and universal cable guiding device 7, this universal cable guiding device 7 comprise that lateral shaft is connected on orienting lug 71 on the front frame spare and longitudinal axis and is connected on conductor barrel 72 on the orienting lug, have the through hole that wears hauling rope on orienting lug and the conductor barrel.Chain guide 5 wherein comprises inner guide plate 51, outer guide plate 52 and is connected dials sprocket wheel 53 and guide wheel 54 between the inside and outside guide plate.
During use, by car jaw connecting plate 1 this group chain device is connected on the vehicle frame of bicycle, chain is connected with sprocket wheel, chain guide according to existing mode, and conductor barrel 72, the through hole on the orienting lug 71 that hauling rope 8 passes universal cable guiding device successively are in track adjusting wheel 6 is connected on the tractive unit on the connecting panel 311; During gear shift, by hauling rope 8 traction connecting panels 31, connecting panel 31,32 is swayed and drive after poppet spare 4 and move together, because the determined Plane intersects of the rotational plane of connecting panel and axis last, after poppet spare constitutes the acute angle angle, this oblique setting, make guide wheel be easy to aim at sprocket piece, have vertically, the displacement effect of front and back, inside and outside three directions, be convenient to accurate location, realize gear shift flexibly.
Claims (6)
1, bicycle derailleur, comprise front frame spare (2), after poppet spare (4) and two parallel connecting panels (31,32), front frame spare (2) but on the be coupling car jaw connecting plate (1) of elastic reset, after poppet spare (4) but on the be coupling chain guide (5) of elastic reset, it is characterized in that described after poppet spare (4) is L-shaped and be provided with upper inclined portion (41), parallel connecting panel (31,32) is coupling between after poppet spare (4) and front frame spare (2) along upper inclined portion (41) is oblique, is provided with return spring in the inner chamber of its formation.
2, bicycle derailleur according to claim 1, it is characterized in that described front frame spare (2) is provided with the portion of having a down dip (21), described parallel connecting panel (31,32) is connected on portion of having a down dip (21) and the upper inclined portion (41) by the bearing pin at its two ends.
3, bicycle derailleur according to claim 2 is characterized in that described chain guide (5) comprises inner guide plate (51), outer guide plate (52) and is connected to dial sprocket wheel (53) and guide wheel (54) between the inside and outside guide plate.
4,, it is characterized in that the connecting panel (31) in the described parallel connecting panel is provided with tractive unit (311) according to claim 1 or 3 described bicycle derailleurs; Front frame spare (2) is provided with guide roller (6) and universal cable guiding device (7).
5, bicycle derailleur according to claim 4, it is characterized in that described universal cable guiding device (7) comprises that lateral shaft is connected on orienting lug (71) on the front frame spare and longitudinal axis and is connected on conductor barrel (72) on the orienting lug, described orienting lug and conductor barrel are provided with the hauling rope through hole.
6, bicycle derailleur according to claim 5 is characterized in that the coupling end of described car jaw connecting plate (1) is provided with car jaw interface and fastener hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200197774U CN2677286Y (en) | 2004-01-18 | 2004-01-18 | Bicycle rear transmission chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200197774U CN2677286Y (en) | 2004-01-18 | 2004-01-18 | Bicycle rear transmission chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677286Y true CN2677286Y (en) | 2005-02-09 |
Family
ID=34583196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200197774U Expired - Fee Related CN2677286Y (en) | 2004-01-18 | 2004-01-18 | Bicycle rear transmission chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677286Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502091A (en) * | 2017-02-24 | 2018-09-07 | 株式会社岛野 | Bicycle derailleur |
| EP4197893A1 (en) * | 2021-12-20 | 2023-06-21 | ZUMA Innovation, S.L. | Rear derailleur for an open quadrilateral |
-
2004
- 2004-01-18 CN CNU2004200197774U patent/CN2677286Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502091A (en) * | 2017-02-24 | 2018-09-07 | 株式会社岛野 | Bicycle derailleur |
| CN108502091B (en) * | 2017-02-24 | 2021-04-06 | 株式会社岛野 | Bicycle rear chain shifter |
| EP4197893A1 (en) * | 2021-12-20 | 2023-06-21 | ZUMA Innovation, S.L. | Rear derailleur for an open quadrilateral |
| WO2023118141A1 (en) | 2021-12-20 | 2023-06-29 | Zuma Innovation S.L. | Rear derailleur for an open quadrilateral |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050209 Termination date: 20120118 |