CN2183331Y - Middle axle speed-changing bicycle - Google Patents
Middle axle speed-changing bicycle Download PDFInfo
- Publication number
- CN2183331Y CN2183331Y CN 94201354 CN94201354U CN2183331Y CN 2183331 Y CN2183331 Y CN 2183331Y CN 94201354 CN94201354 CN 94201354 CN 94201354 U CN94201354 U CN 94201354U CN 2183331 Y CN2183331 Y CN 2183331Y
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- China
- Prior art keywords
- wheel
- ratchet
- gear
- pawl
- bicycle
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- 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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Abstract
Disclosed is a middle axle speed-changing bicycle, mainly comprising the middle axle (6) of the bicycle. The utility model is characterized in that a set of speed-changing device composed of a ratchet wheel (11), the telescopic control component (12) of the ratchet pawl, a ratchet gear (8) sheathed of the ratchet wheel, and a driven wheel (2) engaged with the ratchet gear (8), is arranged on the middle axle. The utility model has the advantages of reasonable structure, easy fabrication, fully closed drive, high safety, convenient maintenance, flexible speed changing, big ratio range, and labor saving in riding.
Description
The utility model relates to a kind of bicycle, particularly a kind of axis variable speed bicycle.
The speed-changing mechanism of present variable speed bicycle adopts bicycle rear wheel hub speed change more or dials the version of chain speed change.The wheel hub speed-changing mechanism is comparatively complicated because of its structure, and accuracy of manufacture requires high, in addition inconvenient maintenance and gradually by simple in structure, the version that the chain speed change is dialled in installation, maintenance easily replaces.But dialling the chain speed changing structure is Open architecture, can't install the chain cover cover additional, causes that chain easily is covered with dust, easy-to-rust, influences its service life.Often there is the situation that trousers angle or shirt rim are involved in the chain to take place riding.
The purpose of this utility model just is to overcome above-mentioned weak point of the prior art, and provides a kind of structure more reasonable, and speed change is the axis variable speed bicycle easily.
The purpose of this utility model can adopt following measure to realize: a cover promptly is housed by pawl wheel, ratchet extension and contraction control part be sleeved on ratchet-gear wheel on the pawl wheel on the axis of bicycle, and the transmission system formed of the flower wheel that is meshed with ratchet-gear wheel.
Pawl wheel in the utility model bicycle combines by key ways of connecting and axis, and two pairs of ratchets are installed on pawl wheel at least; One ratchet extension and contraction control sliding sleeve is housed on pawl wheel, and this sliding sleeve is provided with the rectangular opening identical with number of detents; Sliding sleeve is set with the ratchet-gear wheel identical with the ratchet logarithm outward, and each ratchet-gear wheel all is meshed with a driven gear that is fixedly mounted on the gear wheel shaft; At the mouth of gear wheel shaft, be installed with one be used to drive the bicycle running gear; Brake wheel is fixed together by conjunction and sliding sleeve, and an end that is fixedly mounted on the stop mechanism on the transmission system housing joins by the shifter bar on hauling rope and the handlebar, and the other end is provided with a brake component that matches with brake wheel.
Three pairs of ratchets are installed on the pawl wheel in the utility model such scheme, and the every pair of ratchet all is on 180 ° of same cross-sectional planes that are arranged symmetrically in pawl wheel; Phase difference between every adjacent two pairs of ratchets is 60 °; Ratchet is installed in the pawl slot that processes on the pawl wheel by bearing pin and spring.
The utility model pawl wheel part also can adopt another embodiment to solve: promptly pawl wheel adopts the cylindrical drum structure, by combining with affixed ratchet and the axis of one end; At least be installed with two ratchet extension and contraction control cams on the shaft part that is arranged in the pawl wheel cavity, the phase difference between two whenever adjacent cams is 60 °; Two pairs of ratchets are installed on pawl wheel at least; Pawl wheel is set with the ratchet-gear wheel identical with the ratchet logarithm outward, and each ratchet-gear wheel all is meshed with a driven gear that is fixedly mounted on the gear wheel shaft; At the mouth of gear wheel shaft, be installed with one be used to drive the bicycle running gear; Brake wheel is fixed together by the other end of conjunction and pawl wheel, and an end that is fixedly mounted on the stop mechanism on the transmission system housing joins by the shifter bar on hauling rope and the handlebar, and the other end is provided with a brake component that matches with brake wheel.
Three pairs of ratchets are installed on the pawl wheel in this embodiment, and the every pair of ratchet all is on 180 ° of same cross-sectional planes that are arranged symmetrically in pawl wheel; Three ratchets that are installed in pawl wheel the same side are positioned on the same axis, combine by pawl axis and spring and pawl wheel.
The gear that is fixedly mounted on the gear wheel shaft mouth be meshed by the duplex toothed chain wheel of bearing installation on bicycle middle shaft, the duplex toothed chain wheel is connected with flywheel on the bicycle rear shaft by chain.
The utility model also can change the gear that is fixedly mounted on the gear wheel shaft mouth into one finishing bevel gear cuter, and the finishing bevel gear cuter of an end is meshed on this finishing bevel gear cuter and the transmission shaft, and the bevel-gear pair by the transmission shaft other end drives the bicycle rear running.
The utility model compared with prior art has following advantage:
1, rational in infrastructure, make simple;
2, totally-enclosed transmission is safe and reliable, and is easy to maintenance;
3, speed change is flexible, and ratio coverage is big, and it is laborsaving to ride;
4, if adopt embodiment two of the present utility model, be about to chain wheel pair and change bevel-gear pair into and add transmission shaft (or flexible axle), can become no chain drive bike, just more quick, laborsaving, convenient durable.
The drawing of accompanying drawing is described as follows:
Fig. 1 is transmission principle figure of the present utility model.
Fig. 2 is that master of the present utility model cuts open figure.
Fig. 3 is the lateral plan of Fig. 2.
Fig. 4 is the cutaway view of sliding sleeve among Fig. 2.
Fig. 5 is the front view of ratchet-gear wheel among Fig. 2.
Fig. 6 is the front view of brake wheel among Fig. 2.
Fig. 7 is the cutaway view of pawl wheel among Fig. 2.
Fig. 8 is chain-drive transmission principle figure.
Fig. 9 is the bevel drive schematic diagram.
Figure 10 is the front view of another embodiment of the utility model pawl wheel part.
Figure 11 is that the A of Figure 10 is to view.
Figure 12 is the B-B cutaway view of Figure 10.
The utility model is done with detailed description below with reference to embodiment (accompanying drawing), but does not limit the utility model.
Basic transmission principle of the present utility model such as Fig. 1, shown in Figure 8, promptly drive the pawl wheel (11) that is contained on the axis by the axis on the bicycle (6), the driven gear (2) that is sleeved on the ratchet-gear wheel (8) on the pawl wheel and is meshed with ratchet-gear wheel drives by the ratchet (10) that is installed on the pawl wheel, the gear (3) that is fixedly mounted on gear wheel shaft (14) mouth be meshed by the gear (7) in the duplex toothed chain wheel of bearing installation on bicycle middle shaft (6), sprocket wheel in the duplex toothed chain wheel (4) is connected with flywheel on the bicycle rear shaft by chain, thereby reaches the purpose that drives cycle racing.
The concrete structure of the transmission system of the utility model bicycle such as Fig. 2, shown in Figure 3, pawl wheel (11) combines by key ways of connecting and axis (6), three pairs of ratchets (10) are installed on pawl wheel, and the every pair of ratchet all is on 180 ° of same cross-sectional planes that are arranged symmetrically in pawl wheel; Phase difference between every adjacent two pairs of ratchets is 60 °; Ratchet is installed in the pawl slot that processes on the pawl wheel by bearing pin (18) and spring (15); Be set with a sliding sleeve (12) on pawl wheel, this sliding sleeve is provided with the rectangular opening identical with number of detents; Sliding sleeve is set with the ratchet-gear wheel (8) identical with the ratchet logarithm outward, and each ratchet-gear wheel (8) all is meshed with a driven gear (2) that is fixedly mounted on the gear wheel shaft (14); Mouth in gear wheel shaft (14), be installed with one be used to drive the bicycle running gear (3), this gear is meshed by the gear (7) in the duplex toothed chain wheel of bearing installation on bicycle middle shaft; Brake wheel (9) is fixed together by an end face of conjunction and sliding sleeve (12), an end that is fixedly mounted on the stop mechanism (13) on the transmission system housing (1) joins by the shifter bar on hauling rope (17) and the handlebar, and the other end is provided with a brake component (16) that matches with brake wheel (9).
Fig. 9 is the transmission principle figure of second embodiment of the utility model output running part, the gear that is about to be fixedly mounted on gear wheel shaft (14) mouth changes a finishing bevel gear cuter (19) into, the finishing bevel gear cuter (20) of an end is meshed on this finishing bevel gear cuter and the transmission shaft, and the bevel-gear pair (21) by the transmission shaft other end drives the bicycle rear running.
Figure 10,11, the 12nd, another embodiment of the utility model pawl wheel part, the pawl wheel in this scheme (11) is the cylindrical drum structure, combines by ratchet affixed with the one end (22) and axis (6); On the shaft part that is arranged in the pawl wheel cavity, be installed with one three ratchet extension and contraction control cam (12), i.e. three cams, the phase difference between every adjacent two cams is 60 °; Three pairs of ratchets (10) are installed on pawl wheel (11), and the every pair of ratchet all is on 180 ° of same cross-sectional planes that are arranged symmetrically in pawl wheel; Three ratchets that are installed in pawl wheel the same side are positioned on the same axis, combine with pawl wheel by pawl axis (18) and spring (15); Pawl wheel (11) is outer to be set with the ratchet-gear wheel (8) identical with the ratchet logarithm, and each ratchet-gear wheel all is meshed with a driven gear (2) that is fixedly mounted on the gear wheel shaft (14); Brake wheel (9) is fixed together by the other end of conjunction and pawl wheel (11), and all the other structures all are same as last embodiment.
Enlarge the speed range of the utility model bicycle as need, only needing increases the number of pawls that is installed on the pawl wheel, and increases ratchet-gear wheel accordingly and can enlarge its speed range with the quantity of its ingear flower wheel.
Principle of work of the present utility model is as follows:
When normally riding, be installed in three groups of ratchets on the pawl wheel one group and be meshed with corresponding ratchet-gear wheel by the group leader's square opening that processes on the sliding sleeve that (all the other two groups of ratchets then are hidden in the sliding sleeve, that is to say and have only the corresponding a slice ratchet-gear wheel of one group of ratchet and its to be meshed all the time), this ratchet-gear wheel is then by rotating outputting power with its ingear driven gear driven gear axle, and the running of bicycle rear then is to be loaded on the duplex toothed chain wheel on the axis and to realize with the gear that is loaded on gear shaft terminal that the duplex toothed chain meshes together by chain with by bearing.
When in riding, needing to change speed, available hand is moved the change bar that is positioned on the handlebar, affect steel wire (17) to drive the stop mechanism (13) that is fixedly mounted on the transmission system housing (1), the brake component (16) that is contained in the stop mechanism front end is entered in the gear teeth of brake wheel (9) locks brake wheel, sliding sleeve this moment (12) is located motionless under the effect of brake wheel, the back-pedal pin turns the pedal on (5) then, pawl wheel (11) reverses under the drive of axis (6), in the rotation process, former intermeshing one group of ratchet and ratchet-gear wheel break away from gradually, this group ratchet enters in the sliding sleeve, eject the adjacent oblong aperture of one group of ratchet from sliding sleeve when going to 60 °, with the ratchet engagement that matches with it, the shifter bar that will be positioned on the handlebar this moment resets, and a speed-change process finishes.Can change each grade speed easily and flexibly one by one according to the aforesaid operations process.During speed change, directly 120 ° of back-pedals are crossed middle-gradely, directly enter next speed shelves, but also back-pedal are got back to former speed shelves for 180 °.
The principle of work of the utility model second embodiment is as follows:
Be installed in three groups of ratchets on the pawl wheel one group when normally riding under the work of cam, stretch out in the pawl slot from the pawl wheel and be meshed with corresponding ratchet-gear wheel, all the other two groups of ratchets then are hidden under the work of bullet in the pawl slot on the pawl wheel, and all the other principle of work then are same as last embodiment.When in riding, needing to change speed, available hand is moved the shifter bar that is positioned on the handlebar, affect steel rope (17) to drive the stop mechanism (13) that is fixedly mounted on the transmission system housing (1), the brake component (16) that is contained in the stop mechanism front end is entered in the gear teeth of brake wheel (9) locks brake wheel, pawl wheel this moment (11) is located motionless under the effect of brake wheel, the back-pedal pin turns the pedal on (5) then, cam reverses under the drive of axis (6), in the rotation process, former intermeshing one group of ratchet and ratchet-gear wheel break away from gradually, this group ratchet enters in pawl wheel (11) pawl slot, one group of adjacent when going to 60 ° ratchet stretches out the pawl slot from pawl wheel (11) under the driving of the cam that is mated, with the ratchet-gear wheel engagement that matches with it, the shifter bar that will be positioned on the handlebar this moment resets, and a speed-change process finishes.Can change each grade speed easily and flexibly one by one according to the aforesaid operations process.During speed change, directly 120 ° of back-pedals are crossed middle-gradely, directly enter next speed shelves.Also but back-pedal is got back to former speed shelves for 180 °.
Claims (7)
1, a kind of axis variable speed bicycle, it mainly comprises bicycle middle shaft (6), it is characterized in that: a cover is housed by pawl wheel (11), ratchet extension and contraction control part (12) be sleeved on ratchet-gear wheel (8) on the pawl wheel on the axis (6) of bicycle, and the transmission system of the flower wheel (2) that is meshed with ratchet-gear wheel (8) composition.
2, axis variable speed bicycle according to claim 1 is characterized in that: pawl wheel (11) combines by key ways of connecting and axis (6), and two pairs of ratchets (10) are installed on pawl wheel (11) at least; One ratchet extension and contraction control sliding sleeve (12) is housed on pawl wheel (11), and this sliding sleeve (12) is provided with and the identical rectangular opening of ratchet (10) number; Sliding sleeve (12) is outer to be set with the ratchet-gear wheel (8) identical with the ratchet logarithm, and each ratchet-gear wheel all is meshed with a driven gear (2) that is fixedly mounted on the gear wheel shaft (14); Mouth in gear wheel shaft (14), be installed with one be used to drive the bicycle running gear; Brake wheel (9) is fixed together by conjunction and sliding sleeve (12), an end that is fixedly mounted on the stop mechanism (13) on the transmission system housing (1) joins by the shifter bar on hauling rope (17) and the handlebar, and the other end is provided with a brake component (16) that matches with brake wheel (9).
3, axis variable speed bicycle according to claim 1 is characterized in that: pawl wheel (11) is the cylindrical drum structure, combines by ratchet affixed with the one end (22) and axis (6); At least be installed with two ratchet extension and contraction control cams (12) on the shaft part that is arranged in the pawl wheel cavity, the phase difference between two whenever adjacent cams is 60 °; Two pairs of ratchets (10) are installed on pawl wheel (11) at least; Pawl wheel (11) is outer to be set with the ratchet-gear wheel (8) identical with the ratchet logarithm, and each ratchet-gear wheel all is meshed with a driven gear (2) that is fixedly mounted on the gear wheel shaft (14); Mouth in gear wheel shaft (14), be installed with one be used to drive the bicycle running gear; Brake wheel (9) is fixed together by the other end of conjunction and pawl wheel (11), an end that is fixedly mounted on the stop mechanism (13) on the transmission system housing (1) joins by the shifter bar on hauling rope (17) and the handlebar, and the other end is provided with a brake component (16) that matches with brake wheel (9).
4, axis variable speed bicycle according to claim 2 is characterized in that: three pairs of ratchets (10) are installed on the pawl wheel (11), and the every pair of ratchet all is on 180 ° of same cross-sectional planes that are arranged symmetrically in pawl wheel; Phase difference between every adjacent two pairs of ratchets is 60 °; Ratchet is installed in the pawl slot that processes on the pawl wheel (11) by bearing pin (18) and spring (15).
5, axis variable speed bicycle according to claim 3 is characterized in that: three pairs of ratchets (10) are installed on the pawl wheel (11), and the every pair of ratchet all is on 180 ° of same cross-sectional planes that are arranged symmetrically in pawl wheel; Three ratchets that are installed in pawl wheel the same side are positioned on the same axis, combine with pawl wheel by pawl axis (18) and spring (15).
6, according to claim 2 or 3 described axis variable speed bicycles, it is characterized in that: the gear (3) that is fixedly mounted on gear wheel shaft (14) mouth be meshed by the duplex toothed chain wheel (4) (7) of bearing installation on bicycle middle shaft, the duplex toothed chain wheel is connected with flywheel on the bicycle rear shaft by chain.
7, according to claim 2 or 3 described axis variable speed bicycles, it is characterized in that: the gear that is fixedly mounted on gear wheel shaft (14) mouth is a finishing bevel gear cuter (19), the finishing bevel gear cuter (20) of an end is meshed on this finishing bevel gear cuter and the transmission shaft, and the bevel-gear pair (21) by the transmission shaft other end drives the bicycle rear running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94201354 CN2183331Y (en) | 1994-01-08 | 1994-01-08 | Middle axle speed-changing bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94201354 CN2183331Y (en) | 1994-01-08 | 1994-01-08 | Middle axle speed-changing bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2183331Y true CN2183331Y (en) | 1994-11-23 |
Family
ID=33821440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94201354 Expired - Fee Related CN2183331Y (en) | 1994-01-08 | 1994-01-08 | Middle axle speed-changing bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2183331Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176262A (en) * | 2017-06-20 | 2017-09-19 | 李倩 | One kind is without chain flexible shaft drived bicycle |
-
1994
- 1994-01-08 CN CN 94201354 patent/CN2183331Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176262A (en) * | 2017-06-20 | 2017-09-19 | 李倩 | One kind is without chain flexible shaft drived 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 |