CN2140877Y - Gearing speed-change mechanism for bicycles - Google Patents
Gearing speed-change mechanism for bicycles Download PDFInfo
- Publication number
- CN2140877Y CN2140877Y CN 92220345 CN92220345U CN2140877Y CN 2140877 Y CN2140877 Y CN 2140877Y CN 92220345 CN92220345 CN 92220345 CN 92220345 U CN92220345 U CN 92220345U CN 2140877 Y CN2140877 Y CN 2140877Y
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- China
- Prior art keywords
- bicycle
- gear
- steel wire
- speed
- ring
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- Expired - Fee Related
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Abstract
The utility model relates to a gearing speed-change mechanism for bicycles, which comprises a fluted disc arranged on a middle shaft of a bicycle. The utility model is characterized in that the fluted disc is driving connection with a speed-change main axle; the speed-change main axle is supported on a housing fixedly connected with a bicycle body; the speed-change main axle is driving connection with a speed-change auxiliary axle capable of swing; the movement of the speed-change auxiliary axle is transmitted to a back wheel of the bicycle by a middle connecting gear which is sheathed with the middle axle of the bicycle; the speed-change auxiliary shaft is supported on a swinging frame which is sheathed with the middle axle of the bicycle, and the movement of the swinging frame is controlled by a speed-change regulation piece. The utility model has the advantages of compact structure, convenient and rapid operation. The utility model is widely used in non-motorized vehicles, tricycles, etc.
Description
The utility model relates to a kind of speed-changing mechanism, particularly a kind of bicycle gearshift.
The speed-changing mechanism of known bicycle is by the preceding sprocket wheel that is contained on the bicycle middle shaft, be contained in several the different back sprocket wheels of the number of teeth on the bicycle rear shaft, and closed chain composition with matching, by changing the meshing relation of chain and each sprocket wheel, reach the purpose of the conversion speed of a motor vehicle.There is following shortcoming in above-mentioned speed-changing mechanism, and the speed difference is irregular, and retaining embodies insufficient; Gear and speed ratio variation order are inconsistent with sprocket wheel variation order, are difficult in the practical operation change conversion gear successively by speed ratio; After gear shift operation is not rapidly, operation finishes, after will in riding, treating the about half cycle of sprocket rotation, just can make the engagement fully again of chain and sprocket wheel, if once need the several gears of conversion, this process is just longer, and can only be in the middle gearshift of riding, hardboard will damaged member during parking, only belongs to the chain-driving speed change and can not the shaft drive speed change.
The purpose of this utility model is to overcome above-mentioned deficiency and a kind of production and all excellent bicycle gearshift of in-use performance is provided.
The utility model relates to a kind of bicycle gearshift, comprise the fluted disc that is contained on the bicycle middle shaft, fluted disc and main shaft are in transmission connection, main shaft is bearing on the housing that is connected with bicycle, main shaft is in transmission connection with the speed change noncoupled axle that can swing, the motion of speed change noncoupled axle by be sleeved on the bicycle middle shaft in connect gear transmission and give bicycle rear, the speed change noncoupled axle is bearing on the swing frame that is sleeved on the bicycle middle shaft, the motion of swing frame is controlled by the speed change regulating part.
Above-mentioned fluted disc is interior fluted disc, is fixed with one with bicycle middle shaft.
Above-mentioned main shaft comprises main shaft (3) and main shaft (4), main shaft (3) is by beaming roller (5), the gear (6) (7) (8) (9) that is connected on the beaming roller (5) is formed, main shaft (4) is made up of beaming roller (10) and the gear (11) (12) (13) (14) that is connected on the beaming roller (10), and gear (9) (14) all is meshed with the internal tooth of fluted disc.
Above-mentioned speed change noncoupled axle is by beaming roller (17), the slidably dual gear and the gear (20) that are sleeved on the beaming roller (17) are formed, gear (20) with in connect gear and be meshed, the slip of dual gear is stirred by the shift fork that is connected on the swing frame, the motion of shift fork is controlled by the speed change regulating part.
Above-mentioned swing frame comprises left and right swing arm, the front end of left and right swing arm, middle part and rear end all have corresponding hole, match with the traveller that shift fork is housed in the hole of front end, matching with the two ends of beaming roller (17) in the hole at middle part, matches with left and right bottom bracket cup on the bicycle middle shaft in the hole at rear portion.
Connecing gear in above-mentioned is dual gear, and dual gear matches with left bottom bracket cup on the bicycle middle shaft, the garden stud wheel of the left part of dual gear for being meshed with gear (20), and right part is a conical gear, conical gear passes motion to bicycle rear.
The right part of above-mentioned dual gear can be the cylindrical wheel that is meshed with gear (20), and left part is the sprocket wheel that the number of teeth equals to be contained in the rear flywheel number of teeth on the bicycle rear shaft, strides on sprocket wheel and the rear flywheel and is wound with closed chain.
Above-mentioned speed change regulating part is by the twin-core steel wire casing that connects swing frame under clutch handle and the last even clutch handle, and speed governing handle and the last twin-core steel wire casing composition that connects shift fork under the speed governing handle that connects.
Above-mentioned clutch handle and speed governing handle include bed course, bed course is closed by two halves garden latch closure and forms, prominent tenon in location and mortise are arranged on the buckling surface of two halves garden ring, the left end of two halves garden ring is shaped on screw thread, it is with it the ring retaining of one that right-hand member has, two semicircular ring are fastened on the handlebar transverse tube, by prominent tenon and mortise location, be set with on the bed course and decide ring mutually, encircle the ring retaining that left end has the band reverse cover wire loop that is one with it surely, " U " shape line mouth is arranged on the reverse cover wire loop, be set with rotating ring on the fixed ring, the left end of rotating ring has a wire casing, has a steel wire knock hole on the wire casing, bed course, fixed ring and rotating ring tighten up by locknut.
Above-mentioned twin-core steel wire casing comprises a steel wire, the middle part of the steel wire locating dowel pin that has been connected, the steel wire middle part is looped around on the wire casing of rotating ring, locating dowel pin on it is in the steel wire knock hole that inserts on the rotating ring, the two ends of steel wire are drawn by " U " shape line mouth on the fixed ring, be respectively installed with two sleeve pipes on it, two lower ends of steel wire are connected with swing frame with shift fork respectively.
Principle of work of the present utility model is as follows:
Pedal stretcher, fluted disc rotates with bicycle middle shaft, by gear (9) (14) beaming roller (3) and (4) and gear (6) (7) (8) and (11) (12) (13) are rotated simultaneously, again by dual gear (18) (19) move axially and with the upper and lower swing of swing frame, make it and gear (6) (7) (8) (11) (12) (13) electing property engagement, thereby make beaming roller (17) conversion go out 12 different rotating speeds, connect gear (35) in reaching by gear (20) then, be passed to bicycle rear by the garden finishing bevel gear cuter at last.
During speed governing, earlier clutch handle (three gears in upper, middle and lower are arranged) is gone to " in " be on the neutral, this moment, swing frame was in middle, the speed change noncoupled axle does not all engage with main shaft (3) (4), rotate speed governing handle (six gears are arranged) then to required gear, again downward or upward at last, go to the position of closing and get final product the clutch handle.
The utlity model has following characteristics:
1. the utility model is simple in structure, compact, volume is little, in light weight, be installed on bicycle center tap downside, its assembly size, vertically be no more than ordinary bicycle chain sprocket radius, laterally then place between the two pedal cranks plane of revolutions, because of not needing hind axle to participate in speed change, its structure can greatly simplify.
2. it is consistent that gear of the present utility model and gear change, can be at an easy rate conversion speed ratio successively.
3. the utility model gear shift operation is convenient, rapid.After the gearshift, each transmission gear meshes immediately, makes whole drive system be in normal stressed drive state immediately.
4. both can the gearshift, can jump over speed change again.After being allocated to neutral, dual gear (18) (19) both can once move a gear, also can once move several gears, even can once change to 12 keeping off the most at a high speed from dead slow 1 retaining, and vice versa.In addition can motionless speed governing handle and only realize the speed change of jumping over of 6 gears with the clutch handle, being about to the clutch handle is relayed to down from last directly turning over, or all can from directly forwarding to down, just make the engagement relationship of direct change of speed change noncoupled axle and main shaft (3) (4), the gear of exchange is 1 and 7,2 and 8,3 and 9,4 and 10,5 and 11,6 and 12.
5. row is ridden or equal adjustable speed when stopping.
6. shaft drive and chain gear are dual-purpose.
7. other unpowered vehicle such as three-wheel vehicle also can adopt.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 integral structure scheme drawing of the present utility model.
Fig. 2 is a speed change structural representation partly among Fig. 1.
Fig. 3 is a speed change mutual alignment graph of a relation partly among Fig. 1.
Fig. 4 is the lateral plan of Fig. 3.
The structural representation of Fig. 5 swing frame.
The structural representation of the right swing arm of Fig. 6.
The installation site graph of a relation of Fig. 7 bicycle middle shaft and swing frame.
The structural representation of Fig. 8 left side bottom bracket cup.
The structural representation of the right bottom bracket cup of Fig. 9.
The structural representation of Figure 10 twin-core steel wire casing.
The structural representation of Figure 11 clutch handle and speed governing handle.
The semisectional view of Figure 12 bed course.
Figure 13 is the sectional view of Figure 12.
The semisectional view that Figure 14 encircles surely.
Figure 15 is the sectional view of Figure 14.
The semisectional view of Figure 16 rotating ring.
Figure 17 is the sectional view of Figure 16.
Figure 18 connects the another kind of structural representation of gear in being.
Accompanying drawing 1～Figure 17 has described an embodiment of the present utility model.The utility model comprises bicycle middle shaft (1), is fixed with fluted disc (2) on the bicycle middle shaft (1), and fluted disc (2) is interior fluted disc, its installation site, and fixed form is identical with the ordinary bicycle chain sprocket.Fluted disc (2) is in transmission connection with main shaft, described main shaft comprises main shaft (3) and main shaft (4), main shaft (3) is made up of beaming roller (5) and the gear (6) (7) (8) (9) that is connected on the beaming roller (5), main shaft (4) is made up of beaming roller (10) and the gear (11) (12) (13) (14) that is connected on the beaming roller (10), beaming roller (5) (10) total length 88mm, diameter of axle φ 8mm, the thick 7.5mm of gear (6) (7) (8) (9) (11) (12) (13) (14), wheelspan is 8.5mm, the two ends of beaming roller (5) (10) by bearing fixing on the housing (15) that is connected with bicycle, gear (9) (14) all is meshed with the inner gear of fluted disc (2), main shaft (3) (4) is in transmission connection with the speed change noncoupled axle (16) that can swing, speed change noncoupled axle (16) is by beaming roller (17), the gear (20) that is sleeved on the slidably dual gear (18) (19) on the beaming roller (17) and is fixed on beaming roller (17) left end is formed, beaming roller (17) is a castellated shaft, dual gear (18) (19) is enclosed within the spline part of beaming roller (17), the long 94mm of beaming roller (17), the spline usable length is 67mm, beaming roller (17) by bearing fixing on swing frame (21), swing frame (21) comprises a left side, right swing arm (22) (23), right swing arm (23) is made up of front and rear, both connect by screw, install with convenient, a left side, right swing arm (22) (23) is solidly fixed by attaching parts (24), a left side, the front end of right swing arm (22) (23), middle part and rear end all have corresponding hole (25) (26) (27), match with the traveller that shift fork (28) are housed (29) in hole (25), the slip of dual gear (18) (19) is stirred by shift fork (28), match with the bearing at beaming roller (17) two ends in hole (26), hole (27) sky is enclosed within the left side on the bicycle middle shaft (1), on the right bottom bracket cup (30) (31), concentric with bicycle middle shaft (1).Left side bottom bracket cup (30) matches with the left part of bicycle middle shaft (1), round platform seat (32) (33) formed integrally therewith is arranged on it, garden pedestal (33) is the installation garden pedestal of left swing arm (22), the installation garden pedestal (34) that right swing arm (23) is installed is arranged on the right bottom bracket cup (31), the motion of speed change noncoupled axle (16) connects gear (35) in being passed to by gear (20), in connect gear (35) and form by dual gear (36) (37), dual gear (36) (37) sky is enclosed within on the garden pedestal (32) of the left bottom bracket cup (30) on the bicycle middle shaft (1), and is concentric with bicycle middle shaft (1).The garden stud wheel of dual gear (36) for being meshed with gear (20), dual gear (37) is the garden finishing bevel gear cuter, both are one during installation.The garden finishing bevel gear cuter passes motion to bicycle rear.Moving of the swing of swing frame (21) and shift fork (28) controlled by the speed change regulating part.The speed change regulating part comprise clutch handle, speed governing handle and on connect the twin-core steel wire casing that connects swing frame (21) under the clutch handle and on connect the twin-core steel wire casing that connects shift fork (28) under the speed governing handle.Clutch handle and speed governing handle include bed course (38), bed course (38) is closed by two halves garden latch closure and forms, prominent tenon (39) in location and mortise (40) are arranged on the buckling surface of two halves garden ring, the left end of two halves garden ring is shaped on screw thread (41), right-hand member has ring retaining (42) formed integrally therewith, two halves garden latch closure is combined on the handlebar transverse tube (43), mutually by prominent tenon (39) and mortise (40) location, be set with on the bed course (38) and decide ring (44), fixed ring (44) left end has the ring retaining (45) of band reverse cover wire loop formed integrally therewith, on the reverse cover wire loop of ring retaining (45) " U " shape line mouth (46) formed integrally therewith is arranged, be set with rotating ring (47) on the fixed ring (44), the left end of rotating ring (47) has a wire casing (48), have a steel wire knock hole (49) on the wire casing (48), bed course (38), fixed ring (44) and rotating ring (47) tighten up by locknut (50).The twin-core steel wire casing includes steel wire (51), the middle part of steel wire (51) locating dowel pin (52) that has been connected, the middle part of steel wire (51) is looped around on the wire casing (48) of rotating ring (47), locating dowel pin on it (52) is in the steel wire knock hole (49) that inserts on the rotating ring (47), the two ends of steel wire (51) are drawn by " U " shape line mouth (46) on the fixed ring (44), be respectively installed with two sleeve pipes (53) on it, two lower ends of one steel wire (51) are connected with swing frame (21), and two lower ends of another steel wire (51) are connected with shift fork (28).
Each gear number of teeth and the thus obtained speed ratio that respectively keeps off can have multiple scheme.
During having described, accompanying drawing 18 connects the another kind of structure of gear.In connect gear also for dual gear, the garden stud wheel (36) of the right part of dual gear for being meshed with gear (20), left part is the sprocket wheel (54) that the number of teeth equals to be contained in the number of teeth of the rear flywheel on the bicycle rear shaft, all strides on sprocket wheel (54) and the flywheel and is wound with closed chain.
Claims (10)
1, a kind of bicycle gearshift, it is characterized in that comprising the fluted disc that is contained on the bicycle middle shaft, fluted disc and main shaft are in transmission connection, main shaft is bearing on the housing that is connected with bicycle, main shaft is in transmission connection with the speed change noncoupled axle that can swing, the motion of speed change noncoupled axle by be sleeved on the bicycle middle shaft in connect gear transmission and give bicycle rear, the speed change noncoupled axle is bearing on the swing frame that is sleeved on the bicycle middle shaft, the motion of swing frame is controlled by the speed change regulating part.
2, bicycle gearshift according to claim 1 is characterized in that described fluted disc is interior fluted disc, is fixed with one with bicycle middle shaft.
3, bicycle gearshift according to claim 1, it is characterized in that described main shaft comprises main shaft (3) and main shaft (4), main shaft (3) is by beaming roller (5), the gear (6) (7) (8) (9) that is connected on the beaming roller (5) is formed, main shaft (4) is made up of beaming roller (10) and the gear (11) (12) (13) (14) that is connected on the beaming roller (10), and gear (9) (14) all is meshed with the internal tooth of fluted disc.
4, bicycle gearshift according to claim 1, it is characterized in that described speed change noncoupled axle is by beaming roller (17), the slidably dual gear and the gear (20) that are sleeved on the beaming roller (17) are formed, gear (20) with in connect gear and be meshed, the slip of dual gear is stirred by the shift fork that is connected on the swing frame, and the motion of shift fork is controlled by the speed change regulating part.
5, bicycle gearshift according to claim 1, it is characterized in that described swing frame comprises left and right swing arm, the front end of left and right swing arm, middle part and rear end all have corresponding hole, match with the traveller that shift fork is housed in the hole of front end, matching with the two ends of beaming roller (17) in the hole at middle part, matches with left and right bottom bracket cup on the bicycle middle shaft in the hole at rear portion.
6, bicycle gearshift according to claim 1, it is characterized in that connecing gear in described is dual gear, dual gear matches with left bottom bracket cup on the bicycle middle shaft, the garden stud wheel of the left part of dual gear for being meshed with gear (20), right part is the garden finishing bevel gear cuter, and the garden finishing bevel gear cuter passes motion to bicycle rear.
7, bicycle gearshift according to claim 1, the cylindrical wheel of right part that it is characterized in that described dual gear for being meshed with gear (20), left part is the sprocket wheel that the number of teeth equals to be contained in the rear flywheel number of teeth on the bicycle rear shaft, strides on sprocket wheel and the rear flywheel and is wound with closed chain.
8, bicycle gearshift according to claim 1 is characterized in that described speed change regulating part by clutch handle and the last clutch handle that connects, connects the twin-core steel wire casing of swing frame down, and speed governing handle and the last twin-core steel wire casing composition that connects shift fork under the speed governing handle that connects.
9, bicycle gearshift according to claim 8, it is characterized in that described clutch handle and speed governing handle include bed course, bed course is fastened by two semicircular ring and forms, prominent tenon in location and mortise are arranged on the buckling surface of two semicircular ring, the left end of two semicircular ring is shaped on screw thread, it is with it the ring retaining of one that right-hand member has, two semicircular ring are fastened on the handlebar transverse tube, by prominent tenon and mortise location, are set with on the bed course and decide ring mutually, surely encircling left end has the ring retaining of the band reverse cover wire loop that is one with it, " U " shape line mouth is arranged on the reverse cover wire loop, be set with rotating ring on the fixed ring, the left end of rotating ring has a wire casing, have a steel wire knock hole on the wire casing, bed course, fixed ring and rotating ring tighten up by locknut.
10, according to Claim 8 or 9 described bicycle gearshifts, it is characterized in that described twin-core steel wire casing comprises a steel wire, the middle part of the steel wire locating dowel pin that has been connected, the steel wire middle part is looped around on the wire casing of rotating ring, locating dowel pin on it is in the steel wire knock hole that inserts on the rotating ring, the two ends of steel wire are drawn by " U " shape line mouth on the fixed ring, are respectively installed with two sleeve pipes on it, and two lower ends of steel wire are connected with swing frame with shift fork respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220345 CN2140877Y (en) | 1992-09-24 | 1992-09-24 | Gearing speed-change mechanism for bicycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220345 CN2140877Y (en) | 1992-09-24 | 1992-09-24 | Gearing speed-change mechanism for bicycles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2140877Y true CN2140877Y (en) | 1993-08-25 |
Family
ID=33767395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92220345 Expired - Fee Related CN2140877Y (en) | 1992-09-24 | 1992-09-24 | Gearing speed-change mechanism for bicycles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2140877Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180223A (en) * | 2011-04-15 | 2011-09-14 | 王成忠 | Hand and foot driven bicycle |
-
1992
- 1992-09-24 CN CN 92220345 patent/CN2140877Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180223A (en) * | 2011-04-15 | 2011-09-14 | 王成忠 | Hand and foot driven bicycle |
| CN102180223B (en) * | 2011-04-15 | 2012-09-12 | 王成忠 | Hand and foot driven bicycle |
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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 |