CN2221550Y - Improvement of speed variator in rear axle of cycle - Google Patents
Improvement of speed variator in rear axle of cycle Download PDFInfo
- Publication number
- CN2221550Y CN2221550Y CN 95214452 CN95214452U CN2221550Y CN 2221550 Y CN2221550 Y CN 2221550Y CN 95214452 CN95214452 CN 95214452 CN 95214452 U CN95214452 U CN 95214452U CN 2221550 Y CN2221550 Y CN 2221550Y
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- China
- Prior art keywords
- ratchet
- seat
- beaming roller
- improvement
- shell
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- Expired - Fee Related
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Abstract
The utility model relates to an improvement of a speed variator in a rear axle of a cycle, which is compopsed of an outer shell, a roller, a left and a right ratchet seats, a floral disc, a chain wheel, a speed regulation mechanism, a planetary gear drive mechanism, a clutch mechanism, etc. By controlling the speed regulation mechanism in the roller, the position of a regulation sleeve is changed. Thus, long pawls in the clutch mechanism are in the state of complete engagement or engagement at one end and release at one end or complete release to form fast, middle and slow output speeds. Additionally, the other structure of the utility model is improved. Thereby, the utility model not only has the advantages of safe and reliable operation, no idle shift, no stall phenomenon, etc., but also has the advantages of convenient teardown and maintenance, no axial float of the roller in speed regulation, no phenomenon of an outer push rod outward flying, accurate and stable speed regulation, convenient regulation, etc.
Description
The utility model relates to bicycle speed-varying unit, particularly a kind of improvement of internal speed variator for cycle rear axle.
China is a bikedom, and in our work life, about bicycle was accompanied all the time, the bicycle of a superior performance can bring many convenience to us.The appearance of variable speed bicycle, be subjected to people's welcome very soon, unfortunately present its speed-changing mechanism of bicycle only is confined to outer speed change, outside being exposed to, fragile, easily make dirty when riding and decrease clothing, therefore, internal speed-changing is answered this trend just and is produced, rear axle internal speed-changing particularly, adopt full-closed structure, its safe in operation, speed change is convenient, can not produce neutral gear during speed change and favored by people, as the internal speed variator for cycle rear axle of the patent No. 93222673.6, by regulating mechanism, planetary gear mechanism, engaging and disengaging gear is realized three kinds of different drive connections, it is a kind of comparatively ideal change-speed box, but also there is weak point in it, and for example 1. former left ratchet seat was fixed as one with being connected by extruding of shell, and this connection is non-disconnectable, meet inner engaging and disengaging gear, other part damages and just can't change the drawback that existence can not be keeped in repair in the planetary gear mechanism; 2. beaming roller is easy to generate end float misalignment during speed governing, is difficult to guarantee the speed governing P PARK Position P, and speed change is muddled things up; 3. right-hand member live pin middle push rod and outside between the push rod, cause easily during speed governing that outer push rod flies outward.
The purpose of this utility model is to overcome the prior art defective and the improvement of the internal speed variator for cycle rear axle that a kind of left ratchet seat detachably is convenient to keep in repair, guarantee that the speed governing P PARK Position P is stablized, is convenient to regulate is provided.
Task of the present utility model is finished like this: the two ends of shell are pressed with a pair of floral disc, left and right sour jujube seat and left and right axle sleeve that the interior two ends of shell are provided with dust ring are rotatably connected with steel ball formation, right ratchet seat is equipped with engaged sprocket wheel outward, and by the dog chart axial location, left and right axle sleeve is spirally connected with the beaming roller two ends respectively, and with nut and tight; Be provided with the regulating mechanism that is subjected to effector control in the beaming roller, it and planetary gear mechanism engaged transmission, the and arranged on left and right sides of planetary gear mechanism is symmetrical arranged and is subjected to the speed governing mechanism controls to form the engaging and disengaging gear of many grades of output speeds, thereby reach shell and drive floral disc speed change purpose, and the axial location left ratchet seat is set and mounting ring that is spirally connected with shell and the connecting strap that forms drive mechanism respectively with left ratchet seat, shell between left ratchet seat and shell, detachable; Between left ratchet seat and the beaming roller spacer is set, and is provided with the steel bowl of positioning ball between the left end axle sleeve, to keep the beaming roller invariant position; Change to connect the pin position of living of right-hand member speed governing cover, allow it pass beaming roller key shape through hole and be connected with outer push rod, when preventing speed change outside push rod fly outward.
The utility model compared with prior art, safe and reliable except keeping the variable-speed operation that former technology has, can not produce outside the advantage of the neutral gear and the phenomenon of falling off, also have and be convenient to the dismounting maintenance, spacer is made the beaming roller axial location, eliminated end float misalignment, made regulating mechanism keep accurate speed change, outer push rod is not understood outer advantage such as fly.
Description of drawings.
Fig. 1 is the utility model structural representation (adopting steel ball steel bowl structure).
Fig. 2 is the another kind of structural representation (employing bearing arrangement) of the utility model.
Fig. 3 is the connecting strap constructional drawing.
Remake by accompanying drawing embodiment below and describe in further detail.
From accompanying drawing 1-3 as can be known, shell outside the improvement of internal speed variator for cycle rear axle (16) two ends are pressed with a pair of floral disc (17), shell and left end are provided with mounting ring (4) that is provided with the axial location left ratchet seat between the left ratchet seat (27) of dust ring (3) and is spirally connected with shell and the connecting strap (6) that forms drive mechanism respectively with left ratchet seat, shell, and be detachable when being convenient to the inner transposing of part in addition maintenance.Connecting strap (6) respectively has 3 engaged being in transmission connection of concavo-convex circle of circumference uniform distribution respectively with shell, left ratchet seat, the utility model connecting strap (6) adopts outer dome (33) and interior dome (34) structure, corresponding shell adopts indent circle structure, left ratchet seat adopts outer recessed round structure, engaged transferring power.The right ratchet seat (19) that right-hand member is provided with dust ring (3) is equipped with sprocket wheel (15) outward, uniform 3 the concavo-convex circles of difference on both peripheries, and engaged transferring power, and by dog chart (14) axial location.Be rotatably connected by steel ball formation between left and right sour jujube seat and the left and right axle sleeve (29), left side steel ball adopts abrasion resistant steel bowl (5) location, be provided with spacer (28) between left ratchet seat and the beaming roller, beaming roller invariant position during with the assurance speed change, eliminate the beaming roller end float misalignment, make the speed governing gear stable, after two ends axle sleeve and steel ball wearing and tearing, can directly dismantle transposing simultaneously.Left and right axle sleeve is spirally connected with the beaming roller two ends respectively and is also tight with nut (30).
Left and right sour jujube seat and left and right axle sleeve also can adopt bearing (32) to form and be rotatably connected, and the advantage of employing bearing arrangement is easy to assembly, long service life, can save this moment such as spacer and steel bowl etc., vertically wearing and tearing are little, easy to adjust, and shortcoming is that cost increases.
Be provided with the regulating mechanism that is subjected to effector control in the beaming roller, it and planetary gear mechanism engaged transmission, the and arranged on left and right sides of planetary gear mechanism is symmetrical arranged and is subjected to the speed governing mechanism controls to form the engaging and disengaging gear of many grades of output speeds.
Beaming roller (1) is a tubulose part in addition, and two supports upward and with it is spirally connected at axle sleeve (29), and the middle part is a gear structure, and the gear both sides have the key shape through hole (26) by the axle center.
Regulating mechanism is contained in the beaming roller, spring (31), left and right two pin (9), middle push rods (20) alive, the outer push rods (18) of holding screw (2), a reset response are housed from left to right, the left and right speed governing cover (8) that is contained on the beaming roller has and the mating holes of selling (9) close-fitting alive, and living locks the key shape through hole that is pressed into this hole and passes beaming roller.By the outer push rod of effector control the pin drive speed governing of living being enclosed within the key shape through hole length of qualification slides, reach the speed setting purpose,, slip into easily because speed governing cover front end is a cone structure, no matter bicycle remains static or the high-speed cruising state, all can carry out speed governing.And the pin of living that connects right-hand member speed governing cover passes beaming roller key shape through hole and is connected with outer push rod, when preventing speed governing outside push rod fly outward.And outside the exposed junction of push rod be provided with 6 millimeters of corresponding speed change distances fast, in, slow third gear rotating speed scale groove, be beneficial to debugging when being convenient to assemble.
4 planetary wheels (11) that are meshed with beaming roller gear and inner gear (23) simultaneously are housed in the pinion carrier of planetary gear mechanism (12), planetary wheel is contained in center shaft (10) and upward is connected with its running-fit, and the two ends close-fitting of center shaft is in pinion carrier, and inner gear and pinion carrier both sides are processed with Baltimore groove.Module of gear can be selected between 0.8～1.0 millimeter.
Engaging and disengaging gear is arranged in the shell (16), the left and right symmetric position of planetary gear mechanism, comprise left and right a pair of long ratchet (25), a pair of short ratchet pawl (24), be separately fixed in the left and right sour jujube seat by two detent pin (22), inner spinous ring (7) is contained in the outer sour jujube circle (13), all have boss structure on the end face of inside and outside sour jujube circle, can be engaged with the Baltimore groove of inner gear, pinion carrier both sides.Short ratchet pawl on the left ratchet seat and inner spinous ring interlock, long ratchet and the interlock of outer sour jujube circle; Short ratchet pawl on the right ratchet seat and the interlock of outer sour jujube circle, long ratchet and inner spinous ring interlock; Between a left side (or right) sour jujube seat and length (or short) ratchet and between a left side (or right) sour jujube seat and weak point (or long) ratchet click spring (21) that acts on all the time on the long and short ratchet is being housed respectively, it makes long and short ratchet outwards flick around detent pin (22).
Control effector when needing speed governing, promote outer push rod (18), promote speed governing cover (8), overlap residing diverse location according to speed governing through middle push rod (20), the pin (9) of living, make full interlock of long ratchet (25) or the relieving of an end interlock one end or decontrol three kinds of states entirely, form three kinds of friction speeds.When speed governing cover (8) when being in extreme right position, the full interlock of long ratchet (25) be fast grade transmissions; When speed governing cover (8) was in the action radius midway location, the long ratchet (25) on the left ratchet seat (27) was decontroled, and long ratchet (25) interlock in the right ratchet seat (19) is middle-grade transmission; When speed governing cover (8) was in the left end end position, the full relieving of long ratchet (25) was the transmission of slow shelves.Concrete drive connection is as follows:
1. fast shelves transmission: sprocket wheel (15) rotates and drives right ratchet seat (19) rotation, long ratchet (25) interlock in the right ratchet seat, the right inner spinous ring (7) rotates, and drives pinion carrier (12) and rotates, and planetary wheel (11) is done rotation and revolution, inner gear this moment (23) rotates and speedup, the outer sour jujube circle in the right (13) skids, and the sour jujube circle rotates outside the left side, and left side inner spinous ring skids, long ratchet interlock in the left ratchet seat drives left ratchet seat (27), connecting strap (6), shell (16), the rotation synchronously of floral disc (17) do.
2. middle-grade transmission: sprocket wheel (15) rotates and drives right ratchet seat (19) rotation, long ratchet (25) interlock drives the right inner spinous ring (7) rotation in the right ratchet seat, pinion carrier (12) is rotated again, this time-division two-way, one tunnel left side inner spinous ring (7) rotates, short ratchet pawl (24) interlock in the left ratchet seat (27) drives the rotation synchronously of left ratchet seat (27), connecting strap (6), shell (16), floral disc (17); Another road planetary wheel (11) is done rotation and revolution, makes inner gear (23) speedup, and the outer sour jujube circle in the right (13) is skidded, and the long ratchet in the left side (25) is opened, and makes sour jujube circle idle running outside the left side.
3. slow shelves transmission: sprocket wheel (15) rotates and drives right ratchet seat (19) rotation, long ratchet (25) in the right ratchet seat is decontroled, the right inner spinous ring (7) idle running, and the right short ratchet pawl (24) interlock, the outer sour jujube circle in the right (13) is rotated drive inner gear (23) rotation, sour jujube circle (13) idle running is decontroled the long ratchet in the left side (25) outside the left side at this moment, the rotation of inner gear (23) drives planetary wheel (11) rotation and makes pinion carrier (12) deceleration transmission, left side inner spinous ring (7) rotates and makes left side short ratchet pawl (24) interlock, drives left ratchet seat (27), connecting strap (6), shell (16), floral disc (17) rotates synchronously.
Claims (7)
1. the improvement of an internal speed variator for cycle rear axle, the two ends of shell (16) are pressed with a pair of floral disc (17), left and right sour jujube seat (27), (19) that the interior two ends of shell are provided with dust ring (3) form with steel ball with left and right axle sleeve (29) and are rotatably connected, the outer engaged sprocket wheel (15) that is equipped with of right ratchet seat (19), and by dog chart (14) axial location, left and right axle sleeve (29) is spirally connected with beaming roller (1) two ends respectively, and with nut (30) and tight; Be provided with the regulating mechanism that is subjected to effector control in the beaming roller, it and planetary gear mechanism engaged transmission, the and arranged on left and right sides of planetary gear mechanism is symmetrical arranged and is subjected to the speed governing mechanism controls to form the engaging and disengaging gear of many grades of output speeds, it is characterized in that:
A. the mounting ring (4) that is provided with the axial location left ratchet seat between left ratchet seat (27) and the shell (16) and is spirally connected and form the connecting strap (6) of drive mechanism respectively with left ratchet seat, shell with shell;
B. be provided with spacer (28) between left ratchet seat (27) and the beaming roller (1), and and left end axle sleeve (29) between be provided with the steel bowl (5) of positioning ball;
C. the pin (9) of living that connects right-hand member speed governing cover (8) passes beaming roller (1) and is connected with outer push rod (18).
2. the improvement of internal speed variator for cycle rear axle as claimed in claim 1, it is characterized in that described beaming roller (1) is a tubulose part in addition, two supports upward and with it is spirally connected at axle sleeve (29), and the middle part is a gear structure, and the gear both sides have the key shape through hole (26) by the axle center.
3. the improvement of internal speed variator for cycle rear axle as claimed in claim 1 is characterized in that described connecting strap (6) respectively has 3 engaged being in transmission connection of concavo-convex circle of circumference uniform distribution respectively with shell, left ratchet seat.
4. the improvement of internal speed variator for cycle rear axle as claimed in claim 1 is characterized in that can adopting between described left and right sour jujube seat (27), (19) and the left and right end axle sleeve (29) bearing (32) to form and is rotatably connected.
5. the improvement of internal speed variator for cycle rear axle as claimed in claim 1, it is characterized in that described regulating mechanism is contained in the beaming roller (1), holding screw (2), spring (31), left and right two pin (9), middle push rods (20) alive, outer push rod (18) are housed from left to right, and two pins alive (9) are pressed into the left and right sides speed governing cover (8) that is contained on the beaming roller and limit it and slide in beaming roller key shape through hole (26).
6. the improvement of internal speed variator for cycle rear axle as claimed in claim 1, it is characterized in that described planetary gear mechanism comprises is equipped with the 3-4 that is meshed with beaming roller gear and inner gear (23) planetary wheel (11) that is contained on the center shaft (10) in the pinion carrier (12), the two ends close-fitting of center shaft is in pinion carrier.
7. the improvement of internal speed variator for cycle rear axle as claimed in claim 1, it is characterized in that described engaging and disengaging gear is arranged in the shell (16), the left and right symmetric position of planetary gear mechanism, comprise left and right a pair of long ratchet (25), a pair of short ratchet pawl (24), be separately fixed in left and right sour jujube seat (27), (19) by two detent pin (22), inner spinous ring (7) is contained in the outer sour jujube circle (13), short ratchet pawl on the left ratchet seat and inner spinous ring interlock, long ratchet and the interlock of outer sour jujube circle; Short ratchet pawl on the right ratchet seat and the interlock of outer sour jujube circle, long ratchet and inner spinous ring interlock; Between a left side (right side) sour jujube seat and length (or short) ratchet and between a left side (or right) sour jujube seat and weak point (or long) ratchet click spring (21) that acts on the long and short ratchet is being housed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95214452 CN2221550Y (en) | 1995-06-08 | 1995-06-08 | Improvement of speed variator in rear axle of cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95214452 CN2221550Y (en) | 1995-06-08 | 1995-06-08 | Improvement of speed variator in rear axle of cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2221550Y true CN2221550Y (en) | 1996-03-06 |
Family
ID=33864080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95214452 Expired - Fee Related CN2221550Y (en) | 1995-06-08 | 1995-06-08 | Improvement of speed variator in rear axle of cycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2221550Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857509A (en) * | 2016-05-10 | 2016-08-17 | 张家港市九鼎机械有限公司 | Bicycle gear shifting device |
-
1995
- 1995-06-08 CN CN 95214452 patent/CN2221550Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857509A (en) * | 2016-05-10 | 2016-08-17 | 张家港市九鼎机械有限公司 | Bicycle gear shifting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |