CN105584585A - Four-speed gear speed changer for bicycle - Google Patents
Four-speed gear speed changer for bicycle Download PDFInfo
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- CN105584585A CN105584585A CN201410659887.5A CN201410659887A CN105584585A CN 105584585 A CN105584585 A CN 105584585A CN 201410659887 A CN201410659887 A CN 201410659887A CN 105584585 A CN105584585 A CN 105584585A
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Abstract
The invention relates to a four-speed gear speed changer for a bicycle. The four-speed gear speed changer mainly consists of a sealing box body, a middle axle, pedals, a driving gear, a speed change device and a shifting mechanism, wherein the pedals are arranged at two ends of the middle axle; the driving gear and the speed change device connected with the driving gear are arranged on the middle axle; the speed change device consists of the middle axle and an output axle which are jointly provided with four groups of constant mesh gears so as to form four transmission speed change gears; force combining wheels are separately arranged on the middle axle and the output axle; the shifting mechanism shifts the corresponding force combining wheels and the corresponding gears to be combined or separated so as to realize transformation of the four gears, so that people can quickly and freely shift the bicycle when riding the bicycle on various pavements. The speed changer is simple and compact in structural design, small in size, and convenient to mount and use. The technical scheme is a simple scheme aiming to solve the problem that the gear speed change is complex for the bicycle, and the developing direction of speed change vehicles in the future is determined.
Description
Technical field
Present design belongs to multi-speed bicycle field, relates in particular to a kind of bicycle gear speed regulator.
Background technology
The multi-speed bicycle using is at present to stir chain by group chain device to make sprocket wheel (being commonly called as chain wheel) different matched combined in front and back realize various transmission gear shift ratios, on general axis, fix the front sprocket wheel of three different numbers of teeth, on flywheel, fix the rear sprocket wheel of six to ten different numbers of teeth, although this structure is simple, but gear shift is dumb, consult relevant bicycle gears transmission technology scheme, complex structure or structural volume are large, promote the use of undesirable.
Summary of the invention
The object of present design is to overcome the shortcoming of above-mentioned prior art, provide a kind of simple and compact for structure, volume urine in installing and using, gear shift four gear gear-shift mechanisms flexibly.
Present design realizes by following technical measures
A kind of bicycle four keeps off gear-shift mechanism, is provided with speed change gear, group retaining device foot-operated, that axis is provided with driving gear and is connected with driving gear by seal case, axis, axis two ends. Described speed change gear is by jackshaft and output shaft, jackshaft is provided with the first gear, the second gear, the 3rd gear and the 4th gear from right to left successively, between the first gear and the second gear and jackshaft, rotate together with jackshaft for tight fit connection is integral, the 3rd gear and the 4th gear set are located on jackshaft and on axle, on the jackshaft between the 3rd gear and the 4th gear, be provided with Zuo Lihe wheel, Zuo Lihe wheel is spline joint with jackshaft and can horizontally slips vertically; Output shaft is provided with front sprocket wheel, octadentate wheel, the 7th gear, the 6th gear and the 5th gear from right to left successively, between the 6th gear and the 5th gear and output shaft, rotate together with output shaft for tight fit connection is integral, octadentate wheel is located on output shaft and on axle with the 7th gear set, on the output shaft between octadentate wheel and the 7th gear, be provided with right power and close wheel, it is that spline joint also can horizontally slip vertically with output shaft that right power is closed wheel.
The first gear is taken turns as often to engage with octadentate, and the first gear with driving gear for often to engage, the second gear with the 7th gear for often to engage, the 3rd gear with the 6th gear for often to engage, the 4th gear with the 5th gear for often to engage.
Described group of retaining device closed wheel, reel and hand gear and two steel wire ropes, detent wheels and located pinch roller by cylindrical cam, left shift fork and Zuo Lihe wheel, right shift fork and right power. (note: described reel also can change ratchet device into)
Present design compared with prior art has advantages of: the speed change gear of described speed changer forms four speed change gears by four groups of constant mesh gears, shift fork is stirred corresponding force and is closed that wheel be combined with respective gears or separation realizes the conversion of four gears, all can shift gears by fast and flexible at various road travelings, speed changer overall structure is simple, compactness is convenient to install.
Brief description of the drawings
Fig. 1 is structure diagram
Fig. 2 is structural representation
Fig. 3 dials retaining device schematic diagram
Fig. 4 is jackshaft schematic diagram
Fig. 5 is output shaft schematic diagram
Fig. 6 is that Zuo Lihe wheel closes wheel schematic diagram with right power
Fig. 7 is the fixing schematic diagram of speed changer and vehicle frame
Major part in figure: gear (1) is to (9), Zuo Lihe takes turns (10), right power is closed wheel (11), axis (12), jackshaft (13), output shaft (14), front sprocket wheel (15), fixing sprocket wheel (16) on flywheel, chain (17), bicycle rear axle (18), cylindrical cam (19), right shift fork (20), left shift fork (21), drop center wheel (22), reel (23), hand gear (24), steel wire rope (25) and (26), location pinch roller (27), casing (28), foot-operated (29).
Detailed description of the invention
Embodiment: a kind of bicycle four as shown in Figure 1, Figure 2, Figure 3 shows keeps off gear-shift mechanism, comprise axis (12), axis (12) two ends are provided with foot-operated (29), the speed change gear that axis (12) is provided with driving gear (9) and is connected with driving gear (9), and group retaining device being connected with speed change gear. described speed change gear is by jackshaft (13) and output shaft (14), described jackshaft (13) is provided with the first gear (1) from right to left successively, the second gear (2), the 3rd gear (3) and the 4th gear (4), to be that tight fit connection is integral with jackshaft (13) rotate with jackshaft (13) for the first gear (1) and the second gear (2), the 3rd gear (3) and the 4th gear (4) are sleeved on the upper also axial location of jackshaft (13), on the jackshaft (13) between the 3rd gear (3) and the 4th gear (4), be provided with Zuo Lihe wheel (10), Zuo Lihe wheel (10) and jackshaft (13) are that suitable spline joint can horizontally slip vertically, each side being provided with of (10) of Zuo Lihe wheel is no less than two dogs, the outer radius portion of Zuo Lihe wheel (10) is provided with the annular groove suitable with left shift fork (21), the right side of Zuo Lihe wheel (10) with it corresponding the 3rd gear (3) is provided with dog or the slotted eye of adaptation while combining with Zuo Lihe wheel (10), the left side of Zuo Lihe wheel (10) with it corresponding the 4th gear (4) is provided with the slotted eye of adaptation while combining with Zuo Lihe wheel (10), described output shaft (14) is provided with front sprocket wheel (15) from right to left successively, octadentate wheel (8), the 7th gear (7), the 6th gear (6) and the 5th gear (5), to be that tight fit connection is integral with output shaft (14) rotate with output shaft (14) for the 6th gear (6) and the 5th gear (5), octadentate wheel (8) and the 7th gear (7) are sleeved on the upper also axial location of output shaft (14), on the output shaft (14) between octadentate wheel (8) and the 7th gear (7), be provided with right power and close wheel (11), right power is closed wheel (11) and output shaft (14) and can be horizontally slipped vertically for suitable spline joint, right power is closed wheel (11) structure and is closed wheel (10) with left power, octadentate wheel (8) structure is with the 4th gear (4), the 7th gear (7) structure is with the 3rd gear (3).
The first gear (1) is taken turns (8) for often to engage with octadentate, the second gear (2) with the 7th gear (7) for often to engage, the 3rd gear (3) with the 6th gear (6) for often to engage, the 4th gear (4) with the 5th gear (5) for often to engage, these constant mesh gears form four groups of speed change gears, and the first gear (1) with driving gear (9) for often to engage.
Described group of retaining device, as shown in Fig. 1, Fig. 3, Fig. 6, comprises that cylindrical cam (19), left shift fork (21) close wheel (11), reel (23) and hand gear (24) and steel wire rope (25) and (26), detent wheel (22) and location pinch roller (27) with Zuo Lihe wheel (10), right shift fork (20) with right power. (note: described reel also can change ratchet device into, and ratchet device mainly contains ratchet, forward pusher dog, reverse pusher dog, fork composition)
The parallel jackshaft (13) that is located at of cylindrical cam (19) is connected with gearbox body with axle shaft (14) upper middle position, stretch out casing part and be fixed with detent wheel (22) and reel (23), place box house divides suit by left shift fork (21) and right shift fork (20), cylindrical cam (19) is provided with two impression orbits, and it rotates the left shift fork of control (21) and axially moves left and right with right shift fork (20); Left shift fork (21) other end is stuck on Zuo Lihe wheel (10) annular groove; Right shift fork (20) other end is stuck in right power and closes on wheel (11) annular groove; Between reel (23) and hand gear (24), be provided with steel wire rope (25) and (26), hand gear (24) is fixed on handlebar, steel wire rope (25) one end counterclockwise reel (23) upper around one thoughtful two weeks and fixing, the other end is upper fixing at hand gear (24), steel wire rope (26) one end is above fixed at reel (23) around thoughtful two weeks and fixing a, other end hand gear (24) is upper counterclockwise; Drop center wheel (22) plays the role of positioning with location pinch roller (27), and location pinch roller (27) is connected with casing.
Described group of retaining device operation principle
If just transferring to, cylindrical cam (19) adds gear, be reversed to and subtract gear, stir hand gear (24), cylindrical cam (19) rotates certain radian thereupon, left shift fork (21) is stirred Zuo Lihe wheel (10) and be combined or separation with respective gears, and right shift fork (20) is stirred right power and closed that wheel (11) is combined with respective gears or separation realizes the conversion of various gears.
Described transmission gear order and moment bang path
The first gear: Zuo Lihe wheel (10) does not slide and is not combined with gear, right power is closed wheel (11) and is slided to the right and (8) combination of octadentate wheel. Moment bang path: driving gear (9) → first gear (1) → octadentate wheel (8) → right power is closed wheel (11) → axle shaft (14).
The second gear: Zuo Lihe wheel (10) is not combined with gear, right power is closed wheel (11) and is slided left and the 7th gear (7) combination. Moment bang path: driving gear (9) → first gear (1) → jackshaft (13) → second gear (2) → 7th gear (7) → right power is closed wheel (11) → output shaft (14).
The 3rd gear: right power is closed wheel (11) and is not combined with gear, Zuo Lihe wheel (10) slides to the right and the 3rd gear (3) combination. Moment bang path: driving gear (9) → first gear (1) → jackshaft (13) → Zuo Lihe wheel (10) → 3rd gear (3) → the 6th gears (6) → output shaft (14).
The 4th gear: right power is closed wheel (11) and is not combined with gear, Zuo Lihe wheel (10) slides left and the 4th gear (4) combination. Moment bang path: driving gear (9) → first gear (1) → jackshaft (13) → Zuo Lihe wheel (10) → 4th gear (4) → the 5th gears (5) → output shaft (14).
The bicycle gearratio that four gear gear-shift mechanisms relate to
Embodiment: gear (1) to (9) is selected modulus m1.5 or m1.75 spur gear. Structural representation and jackshaft and output shaft schematic diagram gear are by m1.75 spur gear, 1: 1 scale. Driving gear (9) is got (Z46) tooth [(Z42) tooth is between (Z62) tooth]; Gear (1) and gear (5) number of teeth (Z11) tooth; Gear (2) and gear (6) number of teeth (Z14) tooth; Gear (3) and gear (7) number of teeth (Z17) tooth; Gear (4) and gear (8) number of teeth (Z20) tooth; Upper fixing front sprocket wheel (Z14) tooth of output shaft (14); Fixing rear sprocket wheel (Z27) tooth and (Z24) tooth on flywheel [or (Z24) tooth]. The module of more than setting and the number of teeth and teeth number of sprocket are for reference, determine in conjunction with concrete service condition.
Bicycle with toothed wheel of changeable transmission ratio gearratio
| Rear teeth number of sprocket | One gear | Two gears | Three gears | Four gears |
| 27 | 1.19 | 1.79 | 2.63 | 3.94 |
| 24 | 1.34 | 2.0 | 2.96 | 4.43 |
Claims (9)
1. a bicycle four keeps off gear-shift mechanism, there is seal case, axis, axis two ends are not foot-operated, axis is provided with driving gear and the speed change gear being connected with driving gear and group retaining device being connected with speed change gear, it is characterized in that: described speed change gear is by jackshaft (13) and output shaft (14), jackshaft (13) is provided with the first gear (1) from right to left successively, the second gear (2), the 3rd gear (3) and the 4th gear (4), to be that tight fit connection is integral with jackshaft (13) rotate with jackshaft (13) for the first gear (1) and the second gear (2), the 3rd gear (3) and the 4th gear (4) are sleeved on jackshaft (13) and above and on axle locate, output shaft (14) is provided with successively from right to left front sprocket wheel (15), the 8th and takes turns (8), the 7th and take turns (7), the 6th and take turns (6), the 5th and take turns (5), the 6th takes turns (6) and the 5th takes turns (5) and output shaft (14) and rotates with output shaft (14) for tight fit connection is integral, octadentate wheel (8) and the 7th gear (7) be sleeved on that output shaft (14) is gone up and axle on locate, the first gear (1) is taken turns (8) for often to engage with driving gear (9) and octadentate, the second gear (2) with the 7th gear (7) for often to engage, the 3rd gear (3) with the 6th gear (6) for often to engage, the 4th gear (4) with the 5th gear (5) for often to engage.
2. bicycle four according to claim 1 keeps off gear-shift mechanism, it is characterized in that: retaining device mainly contains cylindrical cam (19), left shift fork (21) closes wheel (11), reel (23) and hand gear (24) and steel wire rope (25) and (26), drop center wheel (22) and location pinch roller (27) composition with Zuo Lihe wheel (10), right shift fork (20) with right power in described dialling, (note: described reel also can change ratchet device into, ratchet device mainly contains ratchet, forward pusher dog, oppositely pusher dog, fork form); The jackshaft (13) that Zuo Lihe wheel (10) is located between the 3rd gear (3) and the 4th gear (4) is above connected and can axially horizontally slips with jackshaft (13) by spline; Right power is closed wheel (11) and is located at octadentate wheel (8) and goes up and linked and can axially be horizontally slipped by spline and output shaft (14) with the output shaft (14) between the 7th gear (7); The parallel jackshaft (13) that is located at of cylindrical cam (19) is connected with casing with output shaft (14) upper middle position, stretch out casing part and be fixed with drop center wheel (22) and reel (23), place box house divides suit by left shift fork (21) and right shift fork (20); Left shift fork (21) other end is stuck on Zuo Lihe wheel (10) annular groove; Right shift fork (20) other end is stuck in right power and closes on wheel (11) annular groove; Between reel (23) and hand gear (24), be provided with steel wire rope (25) and (26), hand gear is fixed on handlebar; Location pinch roller (27) is located on casing and plays the role of positioning with drop center wheel (22) adaptation.
3. four gear gear-shift mechanisms according to claim 2, it is characterized in that: described cylindrical cam (19) is provided with two impression orbits, its effect is that the left shift fork of control (21) and right shift fork (20) move axially, the certain radian of the every rotation of cylindrical cam (19), in shift fork (21) and the mobile certain distance of right shift fork (20).
4. according to the gear of four described in claim 1 and 2 gear-shift mechanism, it is characterized in that: described jackshaft (13) is fixed with the first gear (1) and the second gear (2), on the jackshaft (13) between the 3rd gear (3) and the 4th gear (4), be provided with the external splines suitable with Zuo Lihe wheel (10).
5. according to the gear of four described in claim 1 and 2 gear-shift mechanism, it is characterized in that: described output shaft (14) is fixed with the 6th gear (6) and the 5th gear (5), stretch out casing outer end and be provided with front sprocket wheel (15), on the output shaft (14) between octadentate wheel (8) and the 7th gear (7), be provided with right power and close the suitable external splines of wheel (11).
6. according to the gear of four described in claim 1 and 2 and 4 gear-shift mechanism, it is characterized in that: described Zuo Lihe wheel (10) inner-diameter portion whose is provided with the internal spline suitable with jackshaft (13), outer radius portion is provided with the annular groove suitable with left shift fork (21), left side be provided with the 4th gear (4) in conjunction with time suitable dog, right side be provided with the 3rd gear (3) in conjunction with time suitable dog.
7. according to the gear of four described in claim 1 and 2 and 5 and 6 gear-shift mechanism, it is characterized in that: described right power is closed wheel (11) structure and closed wheel (10) with left power.
According to four described in claim 1 and 2 and 6 gear gear-shift mechanism, it is characterized in that: the 3rd described gear (3) left side be provided with Zuo Lihe wheel in conjunction with time suitable dog (or slotted eye); Described fourth round (4) right side be provided with Zuo Lihe wheel in conjunction with time suitable slotted eye; Described octadentate wheel (8) structure is with the 4th gear (4); The 7th described gear (7) structure is with the 3rd gear (3).
9. according to the gear of four described in claim 1 and 2 and 3 gear-shift mechanism, it is characterized in that:
Described transmission gear order and moment bang path
The first gear: Zuo Lihe wheel (10) does not slide and is not combined with gear, right power is closed wheel (11) and is slided to the right and (8) combination of octadentate wheel, moment bang path: driving gear (9) → first gear (1) → octadentate wheel (8) → right power is closed wheel (11) → axle shaft (14);
The second gear: Zuo Lihe wheel (10) is not combined with gear, right power is closed wheel (11) and is slided left and the 7th gear (7) combination, moment bang path: driving gear (9) → first gear (1) → jackshaft (13) → second gear (2) → 7th gear (7) → right power is closed wheel (11) → output shaft (14);
The 3rd gear: right power is closed wheel (11) and is not combined with gear, Zuo Lihe wheel (10) slides to the right and the 3rd gear (3) combination, moment bang path: driving gear (9) → first gear (1) → jackshaft (13) → Zuo Lihe wheel (10) → 3rd gear (3) → the 6th gears (6) → output shaft (14);
The 4th gear: right power is closed wheel (11) and is not combined with gear, Zuo Lihe wheel (10) slides left and the 4th gear (4) combination, moment bang path: driving gear (9) → first gear (1) → jackshaft (13) → Zuo Lihe wheel (10) → 4th gear (4) → the 5th gears (5) → output shaft (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659887.5A CN105584585A (en) | 2014-11-06 | 2014-11-06 | Four-speed gear speed changer for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659887.5A CN105584585A (en) | 2014-11-06 | 2014-11-06 | Four-speed gear speed changer for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105584585A true CN105584585A (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410659887.5A Pending CN105584585A (en) | 2014-11-06 | 2014-11-06 | Four-speed gear speed changer for bicycle |
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| Country | Link |
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| CN (1) | CN105584585A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105947101A (en) * | 2016-05-26 | 2016-09-21 | 石宗泽 | Constant mesh gear speed change device |
| CN113803422A (en) * | 2021-10-12 | 2021-12-17 | 石幸运 | Double-shaft multi-stage neutral-gear-free transmission with load, advanced gear and rear gear disengagement |
-
2014
- 2014-11-06 CN CN201410659887.5A patent/CN105584585A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105947101A (en) * | 2016-05-26 | 2016-09-21 | 石宗泽 | Constant mesh gear speed change device |
| CN113803422A (en) * | 2021-10-12 | 2021-12-17 | 石幸运 | Double-shaft multi-stage neutral-gear-free transmission with load, advanced gear and rear gear disengagement |
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| DD01 | Delivery of document by public notice |
Addressee: Yang Baibao Document name: Notification of Acceptance of Patent Application |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |