CN2619868Y - Bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle - Google Patents
Bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle Download PDFInfo
- Publication number
- CN2619868Y CN2619868Y CN 03202544 CN03202544U CN2619868Y CN 2619868 Y CN2619868 Y CN 2619868Y CN 03202544 CN03202544 CN 03202544 CN 03202544 U CN03202544 U CN 03202544U CN 2619868 Y CN2619868 Y CN 2619868Y
- Authority
- CN
- China
- Prior art keywords
- ratchet
- built
- bicycle
- fool
- drive shaft
- Prior art date
- 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
Links
- 230000002457 bidirectional effect Effects 0.000 title abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 28
- 230000002787 reinforcement Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 11
- 230000001141 propulsive effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000003967 crop rotation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
A bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle. When pedaling in the forward direction, the function of the bicycle is the same as that of a common bicycle flywheel. When pedaling in reverse direction, the ratchet wheel overrunning clutch drives the built-in planetary gear reducer, so that the bicycle can still move forwards with a large driving force like a heavy-duty manual tricycle. The utility model discloses do not establish the variable speed gearshift in addition, do not have any use restriction to the user, can relapse the variable speed at any time rapidly, children all can use. The rear shaft is arranged in the whole body, so that the dustproof performance is good, the cleaning is convenient, the technical quality can be kept for a long time, and the rear shaft is more suitable for villages and mountainous areas. The ordinary bicycle needs no modification (including various chain covers), and can directly replace the rear axle and the flywheel of the original bicycle for replacement. For the planetary gear reducer, a sun gear floating structure and a planet gear floating structure are designed simultaneously, so that the stress of the gear is uniform, and the reliability is improved. It is suitable for bicycle, tricycle, wheelchair and various water and land sports equipment.
Description
Affiliated technical field
The utility model relates to a kind of speed changer for man-power drawn vehicle, specifically, is a kind ofly can increase manually driven vehicle and utensil propulsive effort, and the user is not used the rickshaw variable speed drive (VSD) axle of restriction.
Background technology
Common manually driven vehicle, as bicycle, three-wheel vehicle, wheel Wheel-chair etc., in the ordinary course of things, use easily, but when going up a slope, when facining the wind, during load-carrying and road when muddy, will feel the propulsive effort deficiency, its major cause is the driving because mostly common no transmission vehicle is to drive up, increase propulsive effort, must manage driving up than lowering.For this reason, people have designed the plurality of bicycles change-speed box, common is a kind of, be at bicycle middle shaft and rear axle place, the sprocket wheel of the different numbers of teeth of many rows is housed respectively,, handles forward and backward group of chain device respectively by being contained in two line traffic control spanners on the handlebar, chain is placed on the different sprocket wheels, reaches the purpose of speed change.But this change-speed box has exacting requirements to user's variable speed operation, and regulation in the product sunlight board bicycle specification sheets of Tianjin " during speed change, should step pedal continuously forward ..., be sure not when sprocket wheel stops, stirring spanner." in addition, this change-speed box there is no dust prevention.Also have a kind of built-in three-speed gear rear axle, its speed change also is to handle the gear shift of line traffic control spanner, and last marine products resemble the interior three fast rear axle services instructions of board N3S10 type bicycle and also require the user, " should make the step reversing as the need speed change ....Must guard against and when stepping on step fast, carry out speed change." also require " arbitrarily not stir Variable speed spanner in case part of damage during parking.”。So these two kinds of change-speed boxs in use all will be kept the hints on operation of speed change firmly in mind, otherwise just there was a mechanical failure for possibility, and clearly, these require for children, and with regard to more difficult having accomplished, this has just limited the performance of transmission function.The present inventor once provided the built-in reinforcement fool of a kind of two-way double speed bicycle rear axle (the notification number CN2501707Y day for announcing, on July 24th, 2002), the problem of having been mentioned above having solved preferably, allow the user under any circumstance, can be arbitrarily speed change repeatedly rapidly.But the built-in reinforcement fool of above-mentioned two-way double speed bicycle rear axle structurally also also has weak point, now is listed below:
1. left end cap 1 (is quoted parts name and Reference numeral in the documents specification sheets, connect with screw thread and housing 33 down together), if normal screw thread then left end cap 1 under the effect of internally toothed annulus 32 torques, left end cap 1 and housing 33 are got loose, if use left-hand thread, though under the effect of internally toothed annulus 32 torques, left end cap 1 can not get loose with housing 33, but, if on left end cap 1, be provided with the band-type brake of brake usefulness, and that this brake sticking brake is used on bicycle is more general, at this moment, left end cap 1 still can get loose with housing 33 under the effect of brake torque.In other words, if left end cap 1 can not got loose with housing 33 simultaneously in the above two kinds of cases, just need set up the locking member of screw thread, but, tend to make the leak tightness variation of axle like this, have influence on the service life of axle drive shaft, and make profile rough, can make troubles to the user.
2. the installation of planet wheel spindle 3 on planetary wheel carrier 2 is cantilevered, and its structural rigidity is good not as the two ends freely-supported, can be influential to the gear normal operation.
3. the fabrication properties of planet wheel spindle 3 also needs to improve.
4. sprocket wheel 21 is used spiral marking connection with axle drive shaft 19, and dismounting is inconvenient.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, improves reliability, improves processing, assembly process process, and the built-in reinforcement fool of a kind of two-way double speed rickshaw axle drive shaft is provided, and simultaneously, also keeps following characteristic:
(1) bold and resolute property is not established the speed-change and gearshift steering unit in addition, and the user is not had any use restriction, allows user's random speed change repeatedly fast at any time.
(2) maintainability adopts the whole axle drive shaft structure of built-in variable speed device, sends drive shaft assembly from factory, need not adjust, and can keep technical quality for a long time, has the good dust-proof performance, and cleans easily.
(3) interchangeability need not changed and can be docked in the bicycle of existing no change-speed box.
The utility model solves existing weak point in the background technology, and the technical scheme that is adopted is on the basis of the built-in reinforcement fool of background document two-way double speed bicycle rear axle structure, to carry out following improvement:
1. left end cap and internally toothed annulus are incorporated on the housing and become one, promptly housing has the installation limit outward, and the left end endoporus has the raceway of ball, on the inner cylinder face of inner chamber inner gear is arranged, and the housing right-hand member has negative thread and right end cap to screw.
2. planetary wheel carrier is made into double-walled integral type planetary wheel carrier, planet wheel spindle is constituted two supports.
3. planet wheel spindle is made be into optical axis.
4. the negative thread of sprocket wheel endoporus is changed on limit, endoporus hole and have several projections, match, use back-up ring spacing again with the corresponding locational groove of transmission shaft.
Compared with prior art, the effect division that the utility model is useful is as follows:
Since left end cap and internally toothed annulus and housing become one, satellite gear is passed to the driving torque of internally toothed annulus and with regard to the power transmission of directly passing on the housing limit is installed, if band-type brake brake member also has been installed at the housing left end, then brake torque also can directly be passed to the power transmission installation limit on the housing, driving torque and brake torque all directly transmit, there is not any loosening problem, simultaneously, also guaranteed the leak tightness and the smooth-shaped of axle drive shaft.
2. double-walled integral type planetary wheel carrier constitutes two supports to planet wheel spindle, and planetary wheel carrier is increased the supporting rigidity of planet wheel spindle, and the positional precision of planet wheel spindle is improved, and helps the normal operation of gear.
3. planet wheel spindle becomes optical axis, has greatly improved the fabrication properties of planet wheel spindle.
4. sprocket wheel adopts projection and the groove fit on the axle drive shaft on the endoporus to carry out power transmission, and is spacing with back-up ring, makes dismounting all very convenient, reduced the beaing of axle drive shaft, and can avoid the impact between the part to injure.
Description of drawings
Accompanying drawing is the embodiment that the utility model is used as bicycle rear axle, vertically the first half cutaway view that dissects of line of centers.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, structure of the present utility model and operational process thereof are elaborated.
Accompanying drawing is the embodiment that the utility model is used as bicycle rear axle, and present embodiment comprises housing 1, planetary wheel carrier 2, planet wheel spindle 3, axle bumper 5, adjusting pad 6, pin 8, satellite gear 9, sun wheel 10, oppositely interior ratchet 12, little axle bumper 14, little jam nut 15, axle bumper 16, jam nut 17, mandrel 18, transmission shaft 19, back-up ring 20, sprocket wheel 21, right end cap 22, ratchet 23, ratchet 25, detent pin 26 and nest 28.Satellite gear 9 floats with sun wheel 10 and meshes.Cover tooth and sun wheel 10 engagements in oppositely there being the endoporus of ratchet 12, ratchet in right-hand member has oppositely, respectively there is the raceway of one ball at its outer rim two ends.Right end cap 22 inner edges have the raceway and the interior ratchet of ball, interior ratchet and ratchet 23 engagements, and outer rim has screw thread and housing 1 to screw.Mandrel 18 has the face of cylinder and pin-and-hole to cooperate with planetary wheel carrier 2 and pin 8, and its two ends have screw thread and axle bumper 5,16, little axle bumper 14, little jam nut 15, jam nut 17 to screw.Nest 28, adjusting pad 6 is used for the adjusting play.It is characterized in that the outer rim both sides of housing 1 respectively have a power transmission that the limit is installed, and are used to pass vehicle wheel spoke, its left end endoporus has the raceway that rolls spider, has inner gear and satellite gear 9 to float at inner chamber and meshes, and right-hand member has negative thread and right end cap 22 to screw.The limit, endoporus hole of sprocket wheel 21 has 3,4,5 or 6 projections to match with 3,4,5 or 6 grooves of transmission shaft 19 right-hand members, and is spacing with back-up ring 20.The left end of transmission shaft 19 also has ratchet 23,25 usefulness detent pin 26 to locate in pawl slot, and its outer rim and endoporus have the raceway of ball.Planetary wheel carrier 2 has the axis hole of 3,4 or 5 planet wheel spindles 3, the right-hand member of axis hole has the hole less than the axis hole aperture, on the planetary wheel carrier 2 that is equivalent to planet wheel spindle 3 medium positions, has the window of placing satellite gear 9 usefulness, planetary wheel carrier 2 left ends have radial hole, and are fixing with mandrel 18 with pin 8.
In addition, the axis hole right-hand member of planetary wheel carrier 2 upper planet wheel shafts 3 can be a blind hole; Ratchet 23,25 can be located without detent pin 26, and adopts the such axial pawl slot structure of similar ordinary bicycle flywheel, with spring ratchet 23,25 is axially being located in the pawl slot.
The operational process of the built-in reinforcement fool of two-way double speed of the present utility model rickshaw axle drive shaft is an example to be used as bicycle rear axle, narrates to the rotation direction of being looked in conjunction with the accompanying drawings and according to A in the accompanying drawing.
1. the situation of forward pedaling Middle axle crank
At this moment, transmission shaft 19 is a clickwise, fixes the ratchet engagement of ratchet 23 and right end cap 22 on it, promotes housing 1 vehicle is advanced forward, and this function with the ordinary bicycle flywheel is identical.When housing 1 clockwise rotates, the inner gear of its inner chamber also clockwise rotates, by being contained in the satellite gear 9 on the fixing planet wheel spindle 3, make sun wheel 10 rotate counterclockwise, and the relative ratchet 25 of the oppositely interior ratchet of ratchet 12 is done to surmount slip in making oppositely, does not advance forward so can not influence vehicle.
2. in vehicle is advanced the way, stop to scrunch the situation of Middle axle crank
At this moment, housing 1 and right end cap 22 continue to clockwise rotate, and transmission shaft 19 is motionless, and then the relative ratchet 23 of the ratchet of right end cap 22 is done to surmount slip, and also the function with the ordinary bicycle flywheel is identical for this.In this simultaneously, the inner gear of housing 1 inner chamber also continues to clockwise rotate, and at this moment sun wheel 10 is to rotate counterclockwise, make oppositely in ratchet 12 oppositely in ratchet also relatively ratchet 25 do to surmount slip, so all can not influence the vehicle continuation and advance forward.
3. the situation of backward pedaling Middle axle crank
This has two kinds of situations:
(1) vehicle is under stop conditions, the backward pedaling Middle axle crank
Vehicle is motionless, during backward pedaling, transmission shaft 19 rotates counterclockwise, the ratchet of the ratchet 23 relative right end caps 22 on it is done to surmount slip, and ratchet 25 with oppositely in ratchet 12 oppositely in ratchet engagement, and sun wheel 10 is rotated counterclockwise by interior cover tooth, again by satellite gear 9, the internal tooth crop rotation cw deceleration of housing 1 inner chamber is rotated, and with respect to transmission shaft 19, its reduction ratio is:
And the power transmission by housing 1 installs the limit powered vehicle and advances forward, obviously, because when scrunching crank backward, increased propulsive effort, make the easier startup of vehicle, this can bring great convenience to the user, and for example bicycle carries weight and temporarily stops halfway, when restarting, just need bigger propulsive effort, at this moment, as long as scrunch backward, just can obtain propulsive effort big as the load-carrying manual tricycle, vehicle is started easily.Simultaneously, the ratchet of installing on the transmission shaft 19 23, the interior ratchet of right end cap 22 is done to surmount slip relatively, does not continue to rotate counterclockwise so can not influence transmission shaft 19.
(2) vehicle advance the way in, the backward pedaling Middle axle crank
By as can be known aforementioned, vehicle is when advancing, and sun wheel 10 rotates counterclockwise, the backward pedaling Middle axle crank, transmission shaft 19 also rotates counterclockwise, if the conter clockwise rotating speed of transmission shaft 19 is less than the conter clockwise rotating speed of sun wheel 10, then ratchet 25 can not with oppositely in ratchet 12 oppositely in ratchet engagement, and make slide relative, in other words when vehicle is advanced with normal speed, the backward pedaling Middle axle crank does not continue to advance though can not influence vehicle, does not have Practical significance.Have only when the vehicle gait of march is slow, backward pedaling Middle axle crank quickly, make the conter clockwise rotating speed of the conter clockwise rotating speed of transmission shaft 19 greater than sun wheel 10, at this moment, ratchet 25 could with oppositely in ratchet 12 oppositely in ratchet engagement, and drive sun wheel 10 by interior cover tooth and rotate counterclockwise, make the rotation of slowing down of the internal tooth crop rotation cw of housing 1 by satellite gear 9 again, also come powered vehicle to advance forward with regard to the propulsive effort that makes housing 1 obtain increasing.
The installation situation of the utility model on vehicle is fairly simple, for example, install on the limit in the power transmission of the built-in reinforcement fool of two-way double speed of the present utility model rickshaw axle drive shaft, install spoke and wheel, with bicycle, three-wheel vehicle (preceding 2 take turns back 1 takes turns) back vent of vehicle frame or the front fork of wheelchair vehicle carriage, fork tightens up with captive nut respectively and gets final product on the mandrel 18 on the utility model axle drive shaft both sides.Take turns back 2 for preceding 1 and take turns three-wheel vehicle, can be with the utility model as intermediary's change-speed box, promptly install fixing suitable sprocket wheel in the power transmission of housing 1, pitch on mandrel 18 both sides with fixed mount in addition, tighten up with nut respectively, again fixed mount is fixed on position suitable on the vehicle frame, can passes through roller chain, drive the sprocket wheel that is contained on the three-wheel vehicle hind axle and drive three-wheel vehicle.Installation on other gymnastic apparatuss can be carried out with reference to preceding method.
In sum, Bidirectional double-speed built-in boosting driving shaft for manpower cycle of the present utility model has the following advantages:
1. only select the speed of two grades of practicalities, only carried out speed change with the forward and reverse Middle axle crank that scrunches, do not established in addition the gear shift machine Structure does not have any use restriction to the user, under any circumstance, can be arbitrarily rapid speed change repeatedly, even if children also can To use, the dependability height is particularly suitable for the use under the complex environment.
2. when needing especially, can be converted to manpower incessantly and drive the rotating torque that vehicle advances. General manpower drives Utensil, be to export rotating torque by both feet or both hands rotating crank, when the rotation of active force by crank, defeated The rotating torque that goes out is very little, will make vehicle lose driving force, at least also can the short time lose driving force, and this for two-wheeled voluntarily Car will unstability. And Bidirectional double-speed built-in boosting driving shaft for manpower cycle of the present utility model but can be controlled crank On the loading angle of the best, repeatedly drive by turns with forward and backward pedaling, just can give play to fully the effect of manpower, Output drive strength square incessantly almost, this is very favourable to driving vehicle in the situation of big resistance.
3. employing overall structure is sent drive shaft assembly from factory, need not adjust, and can keep for a long time technical quality, to existing No speed changer bicycle need not changed (comprising various chain guards), can directly replace its rear axle and flywheel entrucking to use.
4. whole driving shaft structure has good anti-dust performance, and easy to clean is added the driving force of increase and random speed change Function, more be conducive to rural area and mountain area use.
5. Bidirectional double-speed built-in boosting driving shaft for manpower cycle of the present utility model is fitted the power transmission mounting edge of housing 1 Work as variation, can be used to drive various water, the moving utensil of land transportation.
From the walking that falls back to human body beneficial's news report, falling of the utensils such as bicycle scrunches, also should be to human body Benefit.
7. internal gear and planetary gear 9 unsteady nibble of sun gear 10 with planetary gear 9 unsteady engagements and housing 1 have structurally been designed Close, use in the time of this two kinds of floating structures, can effectively compensate the impact that foozle and rigging error are brought, increased tooth The reliability of wheel work.
Claims (7)
1. the built-in reinforcement fool of two-way double speed rickshaw axle drive shaft, comprise housing (1), planetary wheel carrier (2), planet wheel spindle (3), axle bumper (5), adjusting pad (6), pin (8), satellite gear (9), sun wheel (10), ratchet (12) oppositely, little axle bumper (14), little jam nut (15), axle bumper (16), jam nut (17), mandrel (18), transmission shaft (19), back-up ring (20), sprocket wheel (21), right end cap (22), ratchet (23), ratchet (25), detent pin (26) and nest (28), satellite gear (9) and sun wheel (10) engagement, cover tooth and sun wheel (10) engagement in oppositely there being the endoporus of ratchet (12), ratchet in its right-hand member has oppositely, respectively there is the raceway of one ball at its outer rim two ends, right end cap (22) inner edge has the raceway and the interior ratchet of ball, interior ratchet and ratchet (23) engagement, outer rim has screw thread and housing (1) to screw, mandrel (18) has the face of cylinder and pin-and-hole to cooperate with planetary wheel carrier (2) and pin (8), there are screw thread and axle bumper (5) in its two ends, (16), little axle bumper (14), little jam nut (15), jam nut (17) screws, nest (28), adjusting pad (6) is used for the adjusting play, it is characterized in that, the outer rim of housing (1) has power transmission that the limit is installed, its left end endoporus has the raceway of ball, there are inner gear and satellite gear (9) engagement in the chamber within it, its right-hand member has negative thread and right end cap (22) to screw, the limit, endoporus hole of sprocket wheel (21) has projection to match with groove on transmission shaft (19) the right-hand member face of cylinder, spacing with back-up ring (20), the left end of transmission shaft (19) has pawl slot, ratchet (23) and ratchet (25) are fixed in the pawl slot with detent pin (26), its outer rim and endoporus have the raceway of ball, planetary wheel carrier (2) has the axis hole of planet wheel spindle (3), the right-hand member of axis hole has the hole less than the axis hole aperture, on the planetary wheel carrier (2) that is equivalent to planet wheel spindle (3) medium position, have the window of placing satellite gear (9), planetary wheel carrier (2) left end has radial hole, and is fixing with pin (8) and mandrel (18).
2. the built-in reinforcement fool of two-way double speed according to claim 1 rickshaw axle drive shaft is characterized in that, diverse location and difform power transmission is set on the housing (1) limit is installed.
3. the built-in reinforcement fool of two-way double speed according to claim 1 rickshaw axle drive shaft is characterized in that, the inner gear of housing (1) and satellite gear (9) float and mesh.
4. the built-in reinforcement fool of two-way double speed according to claim 1 rickshaw axle drive shaft is characterized in that, sun wheel (10) is floated with satellite gear (9) and meshed.
5. the built-in reinforcement fool of two-way double speed according to claim 1 rickshaw axle drive shaft is characterized in that the axis hole right-hand member of planetary wheel carrier (2) upper planet wheel shaft (3) is a blind hole.
6. the built-in reinforcement fool of two-way double speed according to claim 1 rickshaw axle drive shaft is characterized in that, with spring ratchet (23), (25) is axially being located in the pawl slot.
7. the built-in reinforcement fool of two-way double speed according to claim 1 rickshaw axle drive shaft is characterized in that the axis hole of 3,4 or 5 planet wheel spindles (3) is arranged on the planetary wheel carrier (2), and 3,4 or 5 planet wheel spindles (3) and 3,4 or 5 satellite gears (9) are housed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03202544 CN2619868Y (en) | 2002-07-15 | 2003-01-24 | Bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02132601.0 | 2002-07-15 | ||
| CN02132601 | 2002-07-15 | ||
| CN 03202544 CN2619868Y (en) | 2002-07-15 | 2003-01-24 | Bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2619868Y true CN2619868Y (en) | 2004-06-09 |
Family
ID=34276003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03202544 Expired - Fee Related CN2619868Y (en) | 2002-07-15 | 2003-01-24 | Bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2619868Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104411586A (en) * | 2012-06-28 | 2015-03-11 | 空中客车营运有限公司 | Landing gear with a bi-directional clutch |
| CN111959672A (en) * | 2020-08-18 | 2020-11-20 | 姜立人 | Two-speed automatic transmission suitable for bicycle |
-
2003
- 2003-01-24 CN CN 03202544 patent/CN2619868Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104411586A (en) * | 2012-06-28 | 2015-03-11 | 空中客车营运有限公司 | Landing gear with a bi-directional clutch |
| CN111959672A (en) * | 2020-08-18 | 2020-11-20 | 姜立人 | Two-speed automatic transmission suitable for bicycle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4826190A (en) | Dual wheel driven tricycle with a fully enclosed multiple speed drive | |
| CN1833948A (en) | Sprocket assembly for a bicycle | |
| US4666172A (en) | Multiple speed planetary transmission for pedal-powered vehicles | |
| US4955627A (en) | Five speed chainless drive for heavily loaded pedal powered tricycles | |
| JPH05500347A (en) | Planetary gear system for hybrid vehicles | |
| KR20120135923A (en) | Bicycle planetary gear transmission arrangement | |
| CN1230931A (en) | Reversible drive device for bicycle | |
| CN1185135C (en) | Bicycle moved by front and rear drive method of pedal | |
| US4694708A (en) | Single speed transmission for pedal-propelled vehicle | |
| DE102019006708B4 (en) | Bicycle with electric auxiliary drive | |
| US4715246A (en) | Three speed chainless planetary transmission for pedal-powered vehicles | |
| GB2513959A (en) | Universal low-friction bicycle hub transmission | |
| GB2295427A (en) | Crank assembly for a bicycle in which ratio is changed by reversing rotation of pedals | |
| CN2619868Y (en) | Bidirectional double-speed built-in force-increasing driving shaft for manpower vehicle | |
| CN2716129Y (en) | Two-way double-speed built-in boosting speed-changing shaft for manpower vehicle | |
| CN200948864Y (en) | Bicycle auxiliary power unit | |
| CN1743225A (en) | Two-way double-speed built-in boosting speed-changing shaft for manpower vehicle | |
| CN211766098U (en) | High-speed labor-saving bicycle | |
| CN2501707Y (en) | Bidirectional double-speed built-in boosting rear axle of fool bicycle | |
| CN2325303Y (en) | Intermittent friction type wheel hub transmission of changeable ratio used for right direction and opposite direction for bicycle | |
| CN200945919Y (en) | Bicycle crank with built-in one-way drive | |
| CN201116147Y (en) | Semi-step type portable fast and convenient bicycle | |
| GB2143599A (en) | Two-speed gear for a bicycle | |
| CN217575497U (en) | Bicycle with crank on central shaft of rear wheel and capable of changing transmission ratio | |
| CN219172600U (en) | Electric power bicycle transmission system adopting rear hub motor |
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 |