CN201849635U - Gearshift for minisize gearbox of bicycle - Google Patents
Gearshift for minisize gearbox of bicycle Download PDFInfo
- Publication number
- CN201849635U CN201849635U CN2010205760662U CN201020576066U CN201849635U CN 201849635 U CN201849635 U CN 201849635U CN 2010205760662 U CN2010205760662 U CN 2010205760662U CN 201020576066 U CN201020576066 U CN 201020576066U CN 201849635 U CN201849635 U CN 201849635U
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- gearshift
- cam
- ratchet
- retaining
- gear
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Abstract
The utility model discloses a gearshift for a minisize gearbox of a bicycle, which is characterized by mainly comprising a position-limiting ratchet wheel, a speed-reducing ratchet wheel, a speed-reducing transmission fork, a speed-increasing transmission fork, a speed-increasing ratchet wheel, a bracket, a vertical shaft, a transmission fork return spring, a pressing transmission fork return spring nut, a pressing position-limiting ratchet wheel nut, a gear transmission fork, a detent, a gear-shifting upper cam, a gear-shifting lower cam, a gear-shifting pulling rod, a retaining ring, and a stay; the position-limiting ratchet wheel, the speed-reducing ratchet wheel, the speed-increasing ratchet wheel, the gear-shifting upper cam and the gear-shifting lower cam are fixedly arranged on the vertical shaft in sequence from top to bottom; the stay drives the gear-shifting upper cam and the gear-shifting lower cam on the vertical shaft to rotate; the rotating gear-shifting upper cam and the rotating gear-shifting lower cam sequentially push the gear-shifting pulling rod to drive the gear transmission fork to carry out lever motion. The gearshift has small and compact structure, can be used conveniently, is flexible and quick to shift a gear, can be used for realizing quick gear shifting under various road conditions, and has values on generalization.
Description
Technical field
The utility model relates to the bicycle in the vehicle, more specifically relates to a kind of gearshift of bicycle micro-gearbox.
Background technology
Bicycle claims bicycle or bicycle again.Bicycle roughly can be divided into it according to the work characteristics of each parts: bicycle frame device, driving device, running gear, safety device.Driving device comprises pedal, crank, sprocket wheel, chain, axis and flywheel etc.At present, the transmission speed ratio of bicycle has speed ratio to immobilize and adjustable two kinds of speed ratio, the adjustable person of bicycle speed ratio, most Flywheel fluted discs that adopt a plurality of different numbers of teeth of fixed installation on flywheel, adjusting sprocket wheel by chain makes up with the Flywheel fluted disc of the different numbers of teeth, realize different transmission speed ratios, though the mode structure of this change transmission speed ratio is simple, bicycle speed ratio setting range is narrower, it is very difficult to shift gears, when bicycle was climbed bigger sloping of angle, the bicycle speed ratio was still bigger, and climbing is difficult, when bicycle during at the good level road of condition, the bicycle driver wants to ride soon, and less because of the bicycle speed ratio, bicycle is ridden unhappy again.For this reason, someone has invented the bicycle middle shaft change-speed box at the bicycle middle shaft place, want to overcome the narrower deficiency of bicycle speed ratio setting range, as, number of patent application is 200420068975.X, publication number is CN2740527, name is called the technical scheme of " bicycle middle shaft change-speed box ", this bicycle middle shaft change-speed box, it comprises gear wheel, ball, axis, outer housing box, bicycle rack, pedal crank etc., stir the flat fast gear that makes on the floral axis and the flat fast gear mesh on the axis by shifter bar, or change speed pinion on the floral axis and the engagement of the speed change big gear wheel on the axis.It is bigger to be somebody's turn to do " bicycle middle shaft change-speed box " structure, and structure is reasonable inadequately, and particularly variable speed operation is difficult, the bicycle fan can't accept, thus there is not Related product on the market, for this reason, remain to be developed a kind of gearshift of bicycle micro-gearbox, to satisfy bicycle fan's needs.
Summary of the invention
The purpose of this utility model: and a kind of gearshift of bicycle micro-gearbox is provided.
The technical solution of the utility model is: a kind of gearshift of bicycle micro-gearbox, it is characterized in that: gearshift is mainly by spacing ratchet, subtract the retaining ratchet, subtract the retaining shift fork, add the retaining shift fork, add the retaining ratchet, support, vertical shaft, the shift fork pull back spring, press shift fork pull back spring nut, press spacing ratchet nut, yoke shifter, ratchet, the gearshift overhead cam, gearshift is cam down, the gearshift pull bar, back-up ring, backguy is formed, be installed with spacing ratchet on successively from top to bottom on the vertical shaft, subtract the retaining ratchet, add the retaining ratchet, the gearshift overhead cam, gearshift is cam down, backguy drives gearshift overhead cam and the gearshift cam rotation down on the vertical shaft, the gearshift overhead cam of rotation and the gearshift cam pull bar driven gear declutch lever motion that promotes successively to shift gears down.
Described spacing ratchet, subtract the retaining ratchet, add the retaining ratchet, be uniform octadentate, be provided with two backguys, a backguy is as adding retaining, a backguy is as subtracting retaining, whenever draw the backguy that once subtracts retaining, the ratchet that subtracts retaining just drives and subtracts 45 ° of retaining ratchet inhour rotations, subtract the retaining ratchet and just drive 45 ° of vertical shaft inhour rotations, whenever draw the backguy that once adds retaining, the ratchet that adds retaining just drives and adds 45 ° of retaining ratchet clickwises, add the retaining ratchet and just drive 45 ° of vertical shaft clickwises, whenever draw twice backguy just to drive the vertical shaft half-twist, the gearshift overhead cam and 90 ° of the cam dislocation down of shifting gears.
The gearshift of described a kind of bicycle micro-gearbox, its described spacing ratchet, subtract the retaining ratchet, add the retaining ratchet, be uniform octadentate, the gearshift overhead cam and 90 ° of the cam dislocation down of shifting gears, the cam both sides respectively are provided with a gearshift pull bar under gearshift, also respectively be provided with a gearshift pull bar in both sides at the gearshift overhead cam, adding retaining ratchet dextrorotation circles and just drives gearshift cam and the dextrorotation of gearshift overhead cam are circled down, gearshift down cam dextrorotation is circled and is just promoted two gearshift pull bars successively and drive two yoke shifters of the corresponding bonded assembly of gearshift pull bar and respectively do a lever motion, the dextrorotation of gearshift overhead cam circle just promote successively in addition two gearshift pull bars drive the corresponding bonded assemblys of gearshift pull bar in addition two yoke shifters respectively do a lever motion.
The gearshift of described a kind of bicycle micro-gearbox, its described spacing ratchet, subtract the retaining ratchet, add the retaining ratchet, be uniform octadentate, the cam both sides respectively are provided with a gearshift pull bar under gearshift, the gearshift overhead cam also respectively is provided with a gearshift pull bar in both sides, subtracting retaining ratchet inhour rotates a circle and just drives gearshift cam and gearshift overhead cam inhour rotate a circle down, gearshift down cam inhour rotates a circle and just promotes two gearshift pull bars successively and drive two yoke shifters of the corresponding bonded assembly of gearshift pull bar and respectively do a lever motion, gearshift overhead cam inhour rotate a circle just promote successively in addition two gearshift pull bars drive the corresponding bonded assemblys of gearshift pull bar in addition two yoke shifters respectively do a lever motion
The principle of work of the gearshift of bicycle micro-gearbox of the present utility model: the gearshift overhead cam and 90 ° of the cam dislocation down of shifting gears, bicycle rider whenever draws the backguy that once subtracts retaining with hand, the ratchet that subtracts retaining just drives and subtracts 45 ° of retaining ratchet inhour rotations, subtract the retaining ratchet and just drive 45 ° of vertical shaft inhour rotations, whenever draw the backguy that subtracts retaining for twice, just there is a cam to promote a gearshift pull bar and drives a lever motion of a yoke shifter do, realize once subtracting the gearshift of retaining, draw the backguy that once subtracts retaining again, just all enter neutral; Draw the backguy that adds retaining, its action principle is identical, whenever draws once, adds the circulation of retaining-neutral-Jia retaining-neutral-Jia retaining-neutral-Jia retaining-neutral respectively.
The gearshift of the gearshift of bicycle micro-gearbox of the present utility model is very simple, spurs twice backguy, just can realize the one-level gearshift.
The beneficial effects of the utility model: it is small and exquisite, compact that the gearshift of bicycle micro-gearbox of the present utility model has structure, easy to use, gearshift flexibly, fast, particularly under various road conditions, all can realize crash change of speed, make easily, productive costs is low, is easily accepted by the bicycle fan, has the value of popularizing.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model guide ring;
Fig. 3 is the structural representation of spacing ratchet in the utility model;
Fig. 4 is the structural representation that subtracts the retaining ratchet in the utility model;
Fig. 5 is the structural representation of gearshift overhead cam in the utility model;
Fig. 6 is the structural representation that subtracts retaining shift fork parts in the utility model;
Fig. 7 is the structural representation of the utility model middle gear shift fork;
Fig. 8 is four retainings in the utility model, the work scheme drawing when two retainings are neutral;
Fig. 9 is four retaining work in the utility model, the work scheme drawing when two retainings are neutral;
Figure 10 is three retaining work in the utility model, the work scheme drawing a when retaining is neutral;
Figure 11 is three retainings in the utility model, the work scheme drawing a when retaining is neutral.
Be labeled as among the figure: 1 for spacing ratchet, 2 for subtract the retaining ratchet, 3 for subtract the retaining shift fork, 4 for add the retaining shift fork, 5 for add the retaining ratchet, 6 for support, 7 for vertical shaft, 8 for the shift fork pull back spring, 9 for press shift fork pull back spring nut, 10 for press spacing ratchet nut, 11 for yoke shifter, 12 for ratchet, 13a for gearshift overhead cam, 13b for gearshift down cam, 14 for gearshift pull bar, 15 be that back-up ring, 16 is that upper box, 17 is that backguy, 18 is the yoke shifter fulcrum.
The specific embodiment
Below by embodiment, the utility model is further described.
Embodiment
With reference to Fig. 1-Figure 11, a kind of gearshift of bicycle micro-gearbox, it is characterized in that: gearshift is mainly by spacing ratchet 1, subtract retaining ratchet 2, subtract retaining shift fork 3, add retaining shift fork 4, add retaining ratchet 5, support 6, vertical shaft 7, shift fork pull back spring 8, press shift fork pull back spring nut 9, press spacing ratchet nut 10, yoke shifter 11, ratchet 12, gearshift overhead cam 13a, gearshift is cam 13b down, gearshift pull bar 14, back-up ring 15, backguy 17 is formed, be installed with spacing ratchet 1 on successively from top to bottom on the vertical shaft 7, subtract retaining ratchet 2, add retaining ratchet 5, gearshift overhead cam 13a, gearshift is cam 13b down, backguy 17 drives gearshift overhead cam 13a and the gearshift cam 13b rotation down on the vertical shafts 7, the gearshift overhead cam 13a of rotation and gearshift cam 13b pull bar 14 driven gear shift forks 11 lever motions that promote successively to shift gears down.
Described spacing ratchet 1, subtract retaining ratchet 2, add retaining ratchet 5, be uniform octadentate, the gearshift overhead cam 13a and 90 ° of the cam 13b dislocation down of shifting gears, cam 13b both sides respectively are provided with a gearshift pull bar 14 under gearshift, 13a also respectively is provided with a gearshift pull bar 14 in both sides at the gearshift overhead cam, adding retaining ratchet 5 dextrorotations circles and just drives gearshift cam 13b and gearshift overhead cam 13a dextrorotation are circled down, gearshift down cam 13b dextrorotation is circled and is just promoted two gearshift pull bars 14 successively and drive two yoke shifters 11 of gearshift pull bar 14 corresponding bonded assemblys and respectively do a lever motion, gearshift overhead cam 13a dextrorotation circle just promote successively in addition two gearshift pull bars 14 drive gearshift pull bars 14 corresponding bonded assemblys in addition two yoke shifters 11 respectively do a lever motion.Subtracting retaining ratchet 2 inhours rotates a circle and just drives gearshift cam 13b and gearshift overhead cam 13a inhour rotate a circle down, gearshift down cam 13b inhour rotates a circle and just promotes two gearshift pull bars 14 successively and drive two yoke shifters 11 of gearshift pull bar 14 corresponding bonded assemblys and respectively do a lever motion, gearshift overhead cam 13a inhour rotate a circle just promote successively in addition two gearshift pull bars 14 drive gearshift pull bars 14 corresponding bonded assemblys in addition two yoke shifters 11 respectively do a lever motion
Claims (4)
1. the gearshift of a bicycle micro-gearbox, it is characterized in that: gearshift is mainly by spacing ratchet (1), subtract retaining ratchet (2), subtract retaining shift fork (3), add retaining shift fork (4), add retaining ratchet (5), support (6), vertical shaft (7), shift fork pull back spring (8), press shift fork pull back spring nut (9), press spacing ratchet nut (10), yoke shifter (11), ratchet (12), gearshift overhead cam (13a), gearshift is cam (13b) down, gearshift pull bar (14), back-up ring (15), backguy (17) is formed, be installed with spacing ratchet (1) on successively from top to bottom on the vertical shaft (7), subtract retaining ratchet (2), add retaining ratchet (5), gearshift overhead cam (13a), gearshift is cam (13b) down, backguy (17) drives gearshift overhead cam (13a) and gearshift cam (13b) rotation down on the vertical shaft (7), and the gearshift overhead cam (13a) of rotation and gearshift cam (13b) down promote the lever motion of gearshift pull bar (14) driven gear shift fork (11) successively.
2. the gearshift of bicycle micro-gearbox according to claim 1, it is characterized in that: described spacing ratchet (1), subtract retaining ratchet (2), add retaining ratchet (5), be uniform octadentate, be provided with two backguys (17), a backguy (17) is as adding retaining, a backguy (17) is as subtracting retaining, whenever draw the backguy (17) that once subtracts retaining, the ratchet (12) that subtracts retaining just drives and subtracts 45 ° of retaining ratchet (2) inhour rotations, subtract retaining ratchet (2) and just drive 45 ° of vertical shaft (7) inhour rotations, whenever draw the backguy (17) that once adds retaining, the ratchet (12) that adds retaining just drives and adds 45 ° of retaining ratchet (5) clickwises, add retaining ratchet (5) and just drive 45 ° of vertical shaft (7) clickwises, whenever draw twice backguy (17) just to drive vertical shaft (7) half-twist, the gearshift overhead cam (13a) and 90 ° of cam (13b) dislocation down of shifting gears.
3. the gearshift of bicycle micro-gearbox according to claim 1, it is characterized in that: described spacing ratchet (1), subtract retaining ratchet (2), add retaining ratchet (5), be uniform octadentate, the gearshift overhead cam (13a) and 90 ° of cam (13b) dislocation down of shifting gears, cam (13b) both sides respectively are provided with a gearshift pull bar (14) under gearshift, also respectively be provided with a gearshift pull bar (14) in both sides at gearshift overhead cam (13a), adding retaining ratchet (5) dextrorotation circles and just drives gearshift cam (13b) and overhead cam (13a) dextrorotation of shifting gears are circled down, gearshift down cam (13b) dextrorotation is circled and is just promoted two gearshift pull bars (14) successively and drive gearshift pull bar (14) two yoke shifters of corresponding bonded assembly (11) and respectively do a lever motion, the dextrorotation of gearshift overhead cam (13a) circle just promote successively in addition two gearshift pull bars (14) drive the corresponding bonded assembly of gearshift pull bar (14) in addition two yoke shifters (11) respectively do a lever motion.
4. the gearshift of bicycle micro-gearbox according to claim 1, it is characterized in that: described spacing ratchet (1), subtract retaining ratchet (2), add retaining ratchet (5), be uniform octadentate, cam (13b) both sides respectively are provided with a gearshift pull bar (14) under gearshift, gearshift overhead cam (13a) also respectively is provided with a gearshift pull bar (14) in both sides, subtracting retaining ratchet (2) inhour rotates a circle and just drives gearshift cam (13b) and overhead cam (13a) inhour of shifting gears rotate a circle down, gearshift down cam (13b) inhour rotates a circle and just promotes two gearshift pull bars (14) successively and drive gearshift pull bar (14) two yoke shifters of corresponding bonded assembly (11) and respectively do a lever motion, gearshift overhead cam (13a) inhour rotate a circle just promote successively in addition two gearshift pull bars (14) drive the corresponding bonded assembly of gearshift pull bar (14) in addition two yoke shifters (11) respectively do a lever motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205760662U CN201849635U (en) | 2010-10-25 | 2010-10-25 | Gearshift for minisize gearbox of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205760662U CN201849635U (en) | 2010-10-25 | 2010-10-25 | Gearshift for minisize gearbox of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201849635U true CN201849635U (en) | 2011-06-01 |
Family
ID=44092039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205760662U Expired - Lifetime CN201849635U (en) | 2010-10-25 | 2010-10-25 | Gearshift for minisize gearbox of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201849635U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982370A (en) * | 2010-10-25 | 2011-03-02 | 石宗泽 | Gear shifting device of miniature gearbox of bicycle |
| CN103010398A (en) * | 2012-12-03 | 2013-04-03 | 重庆永发工业有限公司 | Transmission box of snowmobile |
| WO2022268074A1 (en) * | 2021-06-23 | 2022-12-29 | 石幸运 | Bicycle, frame system, and non-neutral gearbox |
-
2010
- 2010-10-25 CN CN2010205760662U patent/CN201849635U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982370A (en) * | 2010-10-25 | 2011-03-02 | 石宗泽 | Gear shifting device of miniature gearbox of bicycle |
| CN101982370B (en) * | 2010-10-25 | 2012-12-05 | 石宗泽 | Gear shifting device of miniature gearbox of bicycle |
| CN103010398A (en) * | 2012-12-03 | 2013-04-03 | 重庆永发工业有限公司 | Transmission box of snowmobile |
| CN103010398B (en) * | 2012-12-03 | 2015-04-15 | 重庆永发工业有限公司 | Transmission box of snowmobile |
| WO2022268074A1 (en) * | 2021-06-23 | 2022-12-29 | 石幸运 | Bicycle, frame system, and non-neutral gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110601 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |