CN2905644Y - Automatic speed-changing bicycle - Google Patents
Automatic speed-changing bicycle Download PDFInfo
- Publication number
- CN2905644Y CN2905644Y CN 200420056950 CN200420056950U CN2905644Y CN 2905644 Y CN2905644 Y CN 2905644Y CN 200420056950 CN200420056950 CN 200420056950 CN 200420056950 U CN200420056950 U CN 200420056950U CN 2905644 Y CN2905644 Y CN 2905644Y
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- bicycle
- gear
- speed
- output
- imput shaft
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Abstract
It refers to an automatic transmission bike, a gear box automatically changing the transmission ratio according to different loads is mounted where it is the middle axis originally and then the automatic transmission is achieved. The technical program is as follows: remove the middle axis and install a gear box where the drive shaft, driven shaft, output gear and output sleeve is installed, pedals are installed on the drive draft, each set of gears are separately installed on the drive shaft and the driven shaft so that the pair of gears in the two sets of the gears can be engaged. Two drive sleeves engaged with each other in bevel are installed on the drive shaft; one is fixed on the drive shaft while the other one is fixed with the gear set and under sliding condition. Also, a spring is installed on the non-bevel end and the other end of the spring is kept against the transverse jacking rod so that the two drive sleeves kept engaged. During the operation, after the driving force is transmitted to the drive shaft, the driving force is divided into radial rotary force and axial thrust force on the bevels of the two driving sleeves, when the thrust force is larger than the pressures supported by the spring, the gear set will axially slide so as to achieve automatic transmission.
Description
Affiliated technical field
The utility model relates to a kind of variable speed bicycle, particularly relates to the automatic control of transmission technology of this bicycle speed conversion fraction.
Background technology
At present, the speed changing function of various variable speed bicycles on the market, major part all is that the driving chain of bicycle is changed on different front and back sprocket wheels at different levels, to change the transmitting ratio of sprocket wheel, realizes the speed change of bicycle.And there is following defective in this method for changing speed through using proof:
1, in advancing, during speed change, need use both hands and feet, cooperatively interact, complicated operation, wayward.
2, because the variable speed control of change-speed box generally is with the cable wire pulling, so after bicycle used certain hour, cable wire got rusty, and will influence the sensitivity of variable speed control.
3, bicycle transmission chain produces vibrations when conversion is beated between sprocket wheels at different levels, makes driving chain and other parts load that withstands shocks, and has shortened the service life of car load and parts.And vibrations pass to the user by stretcher, make the cyclist very uncomfortable sensuously.
So because the existence of above-mentioned drawback, though the variable speed bicycle of multiple style is arranged in the market, the user in use really can often use speed changing function, and is not a lot.
Summary of the invention
The purpose of this utility model provides a kind of " automatic speed-changing bicycle ".This utility model not only can realize bicycle seamlessly transitting between each step velocity during speed change in advancing, and can be according to different load (moment) situation, automatically the conversion transmitting ratio.And the user can regulate the moment of controlling this autoshift according to the health, use habit, payload etc. of oneself.To adapt to different condition of service of user and custom.
The technical scheme that its technical matters that solves the utility model adopts is: parts such as present Middle shaft assembly of installing and bottom bracket axle on the bicycle middle shaft position are removed, utilize this position that a change speed gear box is installed, with former forward and backward inclined tube of cycle frame and the trailing wheel Horizontal Branch stay tube that is welded on the bottom bracket axle, be connected on the gear box.To substitute original bottom bracket axle.Imput shaft and two axles of driven shaft are installed in change speed gear box,, are replaced the axis of former bicycle with the imput shaft of change speed gear box.Parts such as stretcher, treadle are installed on the imput shaft.In change speed gear box inside, one group of driving tooth wheels is installed on the imput shaft, one group of driven tooth wheels is installed on the driven shaft, and one group of gear pair in its gear cluster is meshing with each other.Simultaneously, wherein main actuating sleeve is fixed on the imput shaft axis body mutually with monolateral inclined-plane ingear master actuating sleeve and secondary actuating sleeve to install two on imput shaft, and secondary actuating sleeve is in sliding mode on imput shaft, and is fixed together with the driving tooth wheels.Simultaneously at an end of its non-mesh inclined plane a compression spring is installed, an end of spring withstands on the secondary actuating sleeve, and the other end withstands on the transverse crown bar that crosses on the imput shaft, and gives certain pressure of answering in advance, remains engagement to guarantee two actuating sleeves.When the user stepped stretcher, propulsive effort passed on the imput shaft by treadle, and imput shaft is the main actuating sleeve by being fixed together then, drove with it with the secondary actuating sleeve of inclined-plane ingear.By being fixed on the driving tooth wheels on the secondary actuating sleeve, the driven tooth wheels of drive installation on driven shaft by output gear and output cover, pass to bicycle front wheel, by chain power are passed to the back sprocket wheel again, drive the motion of bicycle.
In this technical scheme, because the main actuating sleeve and the secondary actuating sleeve that are installed on the imput shaft are mutually with the inclined-plane ingear, so, as cyclist during by bike, be applied to the torque forces radially on the imput shaft,, on the mesh inclined plane of main actuating sleeve and secondary actuating sleeve, be decomposed into two kinds of power of axial propelling thrust and torque forces radially according to the decomposition of force principle, and this decomposition of force ratio is that its decomposition ratio is constant by the decision of the angle of mesh inclined plane.When bicycle is loaded increase under steam, the radially torsion that is applied on the imput shaft also must increase, the axial thrust that decomposes on the mesh inclined plane also can be accordingly along with increase, because the other end of secondary actuating sleeve is equipped with a compression spring, it is a kind of gradual change value that increases progressively with sine curve to the axial thrust of secondary actuating sleeve.So the axial thrust on being applied to main actuating sleeve and secondary actuating sleeve mesh inclined plane is during greater than the pressure of spring, relative displacement will take place in the mesh inclined plane of main actuating sleeve and secondary actuating sleeve, secondary actuating sleeve will endwisely slip along imput shaft under the effect on inclined-plane.Equally, when this thrust during less than spring pressure, secondary actuating sleeve can be slided go back to original position under the promotion of spring.Like this, along with the continuous variation of load with propulsive effort, the relative position of secondary actuating sleeve on imput shaft also constantly changes, thereby driving the driving tooth wheels that are fixed on the secondary actuating sleeve endwisely slips, change the engagement with the different gear pairs of driven tooth wheels, change transmitting ratio, the realization automatic speed changing.
In this technical scheme, design has the speed change weight adjustment device.Specific design is, in the center of imput shaft one end, install one and regulate bolt, regulate the end that bolt one end opening is exposed to imput shaft, the other end withstands on the transverse crown bar that crosses imput shaft, transverse crown bar then withstands on an end of the spring of control speed change moment.Regulate bolt by rotating, transverse crown bar is moved axially along imput shaft, to change spring giving of secondary actuating sleeve answered pressure, thereby change the size of the required radial thrust of autoshift, adapt to user's different requirements.
In this technical scheme, for realize each gear of bicycle speed change be seamlessly transit, solve different gear pairs when mutual transition because the locking phenomenons that the converter speed ratio difference produces, this programme is designed to the pair of overdrive clutch in the same way unrelated between each gear with the driven tooth wheels, when one group of gear pair joggleword, all the other gear pairs all are in released state.And when two groups of gear pairs at speed-changing same when engagement time, have only rotating speed gear pair work faster, the relatively slow gear pair of rotating speed then is in and surmounts state, has realized bicycle seamlessly transitting between each gear when speed change.
In this technical scheme, consider that the preceding sprocket wheel of bicycle is bigger, and the profile of Automatic Transmission and installation are subjected to position limit.In the design, by being installed in the output cover on the imput shaft, bicycle front wheel is installed on the imput shaft, makes sprocket wheel and imput shaft center on same axle center, with the position of solution change speed gear box imput shaft and sprocket wheel and the overlapping and mutual interference problem in the motion by each autorotation of friction speed.
The beneficial effects of the utility model are, 1, variable speed bicycle in use, can be according to the size of different load, change speed has been simplified the operation of bicycle automatically.2, solved the variable speed bicycle level and smooth transfer problem between friction speed in use.3, be placed in the change speed gear box owing to speed-changing mechanism is concentrated, simplified the external structure of bicycle, help the maintaining of bicycle, prolonged the service life of bicycle.
Description of drawings
Below in conjunction with Figure of description the utility model is further specified.
Accompanying drawing 1 is overall structure of the present utility model and schematic diagram
Accompanying drawing 2 is installation site side schematic views of Automatic Transmission
Accompanying drawing 3 is speed change moment Principles of Regulation figure of change speed gear box
Accompanying drawing 4 is automatic speed changing schematic diagrams of change speed gear box
Accompanying drawing 5 is overdrive clutch scheme of installations of driven tooth wheel set
Accompanying drawing 6 is driven tooth wheel set overdrive clutch working state schematic representations
Accompanying drawing 7 is the sprocket wheel scheme of installations in this programme
Among the figure: 1, imput shaft, 2, bearing 1#, 3, main actuating sleeve, 4, driving key, 5, limit cap bolt 6, gearbox body, 7, secondary actuating sleeve and driving tooth wheels, 8, compression spring, 9, secondary output gear, 10, spring washer, 11, transverse crown bar, 12, left side lid, 13, bearing 2#, 14, O RunddichtringO 15, bearing 3#, 16, regulate bolt, 17, the hole elastic scheibe, 18, the output cover, 19, bicycle front wheel, 20, bearing 4#, 21, main output gear, 22, the power-transfer clutch minor axis, 23, the driven tooth wheels, 24, the driven gear spacing sleeve, 25, driven shaft, 26, lubricated lubricating disc, 27, bearing 5#, 28, the right lid, 29, foot-driven lever, 30, chain, 31, inclined tube before the vehicle frame, 32, inclined tube behind the vehicle frame, 33, the horizontal trombone slide of bicycle rear.
The specific embodiment
One: overall structure and principle of work
In Fig. 1, main actuating sleeve (3), secondary actuating sleeve and driving tooth wheels (7), compression spring (8), spring washer (10), transverse crown bar (11), regulate bolt (16), O RunddichtringO (14), be installed on the imput shaft (1) respectively, main actuating sleeve (3) and imput shaft (1) are fixed together by driving key (4).And the thrust by compression spring (8), make certain the giving of mesh inclined plane maintenance between main actuating sleeve (3) and secondary actuating sleeve and the driving tooth wheels (7) answer pressure.In addition, form the output gear wheels by main output gear (21), secondary output gear (9), wherein, main output gear is fixed on an end of driven shaft in the driven shaft assembly, and secondary output gear is fixed on output and puts, and makes two gears remain engagement.Secondary output gear (9) is fixed together by output cover (18) and bicycle front wheel (19).And prop stand for bicycle treadle (29) is installed in the two ends of imput shaft (1) respectively.On the driven shaft (25) of change speed gear box, lubricated lubricating disc (26) of main output gear (21) power-transfer clutch minor axis (22) driven tooth wheels (23) driven gear spacing sleeves (24) and bearing (20) (27) are installed successively.Imput shaft assembly and driven shaft assembly are supported on left side lid (12) the right lid (28) by bearing (2) bearing (13) bearing (20) bearing (27), and the both sides lid then combines by limit cap bolt (5) and casing (6).Its principle of work is as follows: when the bicyclist steps stretcher, bicyclist's propulsive effort can pass on the imput shaft (1) by treadle (29), then, imput shaft drives with it with on secondary actuating sleeve of inclined-plane ingear and the driving tooth wheels (7) by being fixed on the main actuating sleeve (3) on the axle.Pass through driving gear, the driven gear of drive installation on driven shaft, then by driven shaft (25), main output gear (21), drive secondary output gear (9), by output cover (18), pass to bicycle front wheel (19), by chain power is passed to wheel again, drive the motion of bicycle.
Two: the installation site of change speed gear box
In Fig. 2, gearbox body (6) is welded on respectively on inclined tube (32) behind inclined tube (31) before the vehicle frame, the vehicle frame, the horizontal trombone slide of bicycle rear (33).
Three: the adjusting of change speed gear box automatic speed changing principle and variable speed control load
In Fig. 4, when main actuating sleeve (3) rotates at the drive lower edge of imput shaft (1) bevel direction, it acts on the application force of the axial rotation on the secondary actuating sleeve (7), be decomposed into along the inclined-plane axially and two kinds of power radially, when the radial effect power of decomposing during greater than the elastic force of compression spring (8), secondary actuating sleeve (7) will be along imput shaft (1) to A to slip, when application force during less than the elastic force of compression spring (8), secondary actuating sleeve compression spring (8) will be along imput shaft (1) to B to slip, thereby drive the driving tooth wheels and form different gear matched pairs with the driven tooth wheels, change converter speed ratio, realize automatic speed changing.Consider different users's the custom and the difference of muscle power, the utility model also designs by having adorned speed change Load Regulation mechanism, concrete compression spring (8) withstands on the transverse crown bar (11) by spring washer (10) as Fig. 3, and adjusting bolt (16) is then depended in the position of transverse crown bar (11).When tighting a bolt inwards, compression spring (8) is compressed, the pressure of answering in advance that is applied on secondary actuating sleeve and the driving tooth wheels (7) will strengthen accordingly, realize that the load of speed change is also along with increasing this moment, in like manner, when regulating bolt (16) to inner rotary, the required load forces of speed change will diminish, so just can regulate according to different users's particular case.
Four: the solution of change-gear set self-locking problem
Because being manpower, bicycle drives, so, if Neutral Position is arranged in speed change, the people that rides will be pedaled sky in use, and therefore, the two-stage gear pair is when carrying out conversion about requiring, can not break away from simultaneously, but, be commonly called as " self-locking " in speed-change process because the converter speed ratio difference of two-stage gear pair up and down will interfere with each other.In order to solve the self-locking problem that different gear pairs produce when the gear shift, in the utility model, be that manpower drives according to bicycle, rotating speed is lower, the impact load features of smaller.The driven tooth wheels are designed to be made up of several unrelated individual gears, each gear all passes through independent that install, overriding clutch in the same way and keeps link (as Fig. 5) with driven shaft, when one group of engaging gear subtask, all the other gear pairs all are in non-engagement state.And when two groups of gear pairs when gear shift is meshed simultaneously, have only rotating speed gear pair work faster, the relatively slow gear pair of rotating speed then is in and surmounts state (Fig. 6), thereby produces locking phenomenon when having solved two groups of gear pairs and meshing simultaneously.
Five: the installation of takeoff output and preceding sprocket wheel
Because the preceding sprocket wheel of bicycle is bigger, and the profile of Automatic Transmission and installation are subjected to position limit, output chain gear will produce location overlap and mutual interference mutually with imput shaft in position and motion.For head it off, the design is by being installed in the output nested structure on the imput shaft, in Fig. 7: bicycle front wheel (19) is installed on the output cover (18) simultaneously with secondary output gear (9), output cover (18) then is fixed on the left side lid (12) by bearing (13), and imput shaft (1) then is fixed on the output cover (18) by bearing (15).Like this, make sprocket wheel and imput shaft when work, center on the same garden heart, solved its location overlap and motion artifacts problem by each autorotation of friction speed.
Claims (7)
1, a kind of automatic speed-changing bicycle, this variable speed bicycle has removed the bottom bracket axle part of existing bicycle, installing one in this position can be according to the speed-changing gear box of payload automatic change gear ratio, it is characterized in that: this change speed gear box is mainly by casing, limit, left and right sides lid, the imput shaft assembly, the driven shaft assembly, the output gear wheels, output is overlapped and is used for supporting, the fixing bearing of said modules, bolt is formed, wherein, change speed gear box inside is equipped with the imput shaft assembly, the driven shaft assembly, output gear wheels and output cover, both ends of main drive shaft stretches out in limit, change speed gear box left and right sides lid, above the foot-driven lever of bicycle is installed in, one end of output cover stretches out in outside the lid of limit, the hinge wheel top loading of bicycle, its structural relation is, foot-driven lever drives the imput shaft assembly, the imput shaft assembly drives the driven shaft assembly by different gear combination, and the driven shaft assembly drives the output cover driving hinge wheel by the output gear wheels.
2, automatic speed-changing bicycle according to claim 1, it is characterized in that: the change speed gear box that this variable speed bicycle is installed, casing with change speed gear box replaces the axis part of bicycle now, and gear box is welded on former axis position, frame pipe junction, cycle frame front and back.
3, automatic speed-changing bicycle according to claim 1, it is characterized in that: in the change speed gear box that this variable speed bicycle is installed, the imput shaft assembly is by imput shaft, main actuating sleeve, secondary actuating sleeve, the driving tooth wheels, compression spring, transverse crown bar, the adjusting bolt is formed, its mutual structural relation is, main actuating sleeve and secondary actuating sleeve are assemblied on the imput shaft with the engagement of ladder inclined-plane mutually, wherein, main actuating sleeve is fixed on the imput shaft, secondary actuating sleeve and driving tooth wheels are fixed together, and remain on the imput shaft and slide, at the non-inclined-plane of secondary actuating sleeve one end a compression spring is installed in addition, the other end of spring withstands on the transverse crown bar, so that certain pressure of answering in advance to be arranged on the mesh inclined plane that keeps two actuating sleeves, the driving tooth wheels slide on imput shaft with secondary actuating sleeve, each step position on ladder inclined-plane corresponds respectively to the engage position of every group of driving gear and driven gear, and keeps having all the time one group of gear pair engagement.
4, automatic speed-changing bicycle according to claim 1, it is characterized in that: the imput shaft center of the change speed gear box of installing at this variable speed bicycle, be equipped with one and regulate bolt, one end opening of this bolt is exposed to an end of imput shaft, and the other end withstands on the transverse crown bar of the support compression spring that crosses imput shaft.
5, automatic speed-changing bicycle according to claim 1, it is characterized in that: in the Automatic Transmission that this variable speed bicycle is installed, the driven shaft assembly is made up of driven shaft, driven tooth wheels, wherein, the driven tooth wheels are made up of several unrelated individual gears, and each gear all passes through independent that install, overriding clutch in the same way and keeps linking with driven shaft.
6, automatic speed-changing bicycle according to claim 1, it is characterized in that: in the Automatic Transmission that this variable speed bicycle is installed, the output gear wheels are made up of main output gear, secondary output gear, wherein, main output gear is fixed on an end of driven shaft in the driven shaft assembly, secondary output gear is fixed on output and puts, and makes two gears remain engagement.
7, automatic speed-changing bicycle according to claim 1, it is characterized in that: in the change speed gear box that this automatic speed-changing bicycle is installed, the output cover independently is installed on an end of imput shaft by backup bearing, one end of output cover reaches outside the gearbox body, secondary output gear in the output gear wheels is installed on the end that the output cover is positioned at change speed gear box, and the hinge wheel of bicycle is fixedly mounted on the end that the output cover stretches out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420056950 CN2905644Y (en) | 2004-11-08 | 2004-11-08 | Automatic speed-changing bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420056950 CN2905644Y (en) | 2004-11-08 | 2004-11-08 | Automatic speed-changing bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2905644Y true CN2905644Y (en) | 2007-05-30 |
Family
ID=38114276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420056950 Expired - Fee Related CN2905644Y (en) | 2004-11-08 | 2004-11-08 | Automatic speed-changing bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2905644Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20100214A1 (en) * | 2010-02-12 | 2011-08-13 | Eligio Bianchi | CHANGE OF SPEED TO SLIDING GEARS, PARTICULARLY FOR VELOCIPEDI. |
-
2004
- 2004-11-08 CN CN 200420056950 patent/CN2905644Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20100214A1 (en) * | 2010-02-12 | 2011-08-13 | Eligio Bianchi | CHANGE OF SPEED TO SLIDING GEARS, PARTICULARLY FOR VELOCIPEDI. |
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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 |