CN108001569A - A kind of Seesaw type bicycle assisted learning device - Google Patents
A kind of Seesaw type bicycle assisted learning device Download PDFInfo
- Publication number
- CN108001569A CN108001569A CN201810039000.0A CN201810039000A CN108001569A CN 108001569 A CN108001569 A CN 108001569A CN 201810039000 A CN201810039000 A CN 201810039000A CN 108001569 A CN108001569 A CN 108001569A
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- Prior art keywords
- bicycle
- base
- learning device
- seesaw type
- fixed
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- 230000013016 learning Effects 0.000 title claims abstract description 43
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- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000001351 cycling effect Effects 0.000 description 11
- 230000001012 protector Effects 0.000 description 10
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- 230000006872 improvement Effects 0.000 description 2
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
- B62H1/00—Supports or stands forming part of or attached to cycles
- B62H1/10—Supports or stands forming part of or attached to cycles involving means providing for a stabilised ride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K9/00—Children's cycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
The present invention provides a kind of Seesaw type bicycle assisted learning device, it includes：Stent, its one end are supported on the wheel shaft of bicycle rear；Base, the other end of the stent are fixed on base, and the base is arc-shaped and is arranged symmetrically relative to stent, and the extending direction of the base is vertical with the extending direction before and after bicycle；Semicylinder, it is arranged at the underface of the base, and the axis direction of the semicylinder is parallel with the extending direction before and after bicycle.Damper is further included, the damper is fixed on stent or base, and keeps contacting between bicycle rear and damper, bicycle rear is subject to frictional force.The present invention realizes to be learnt to ride a bicycle in a specific place in a manner of simulating entirely, adapt to more places, space is saved, and can safely, effectively help children or other crowd's Fast Learnings to ride a bicycle, is readily applicable to the physical training of cyclist.
Description
Technical field
The present invention relates to a kind of bicycle assisted learning utensil.
Background technology
At present, existing child's bicycle installs two trundles additional at hind axle.Its role is ought be voluntarily
Steamboat contact ground, supports vehicle body, avoids falling down because of disequilibrium when vehicle main body tilts, and protects bicyclist.Also some is
The cycling of help children for learning or protection children cycle safety and devise other auxiliary implements, such as on rear vehicle shaft
Or install all kinds of handrails additional in the proper site such as handlebar strut, when children learn and ride a bicycle, adult holds this bar, can force
Bicycle keeps standing state not topple over, or plays the role of boosting advance.
But such more effects of design are passive protections, do not promote the effect of Active Learning, thus study is ridden
The help of bicycle is very limited, or even because relying on the support of this appliances, children can not be experienced well by certainly
The movement response of homophony balance, so as to hinder learning effect and study schedule to a certain extent.
In view of this, the present inventor designs a kind of Seesaw type bicycle assisted learning device, can not only be fine
The safety of ground protection children for learning cycling, can more help children are fast and effective when learning to ride a bicycle to grasp from main modulation
The acrobatic elements of balance.
The content of the invention
Rely primarily on passive protection for existing all kinds of child's bicycles and assisted learning utensil, without assisted learning and
Promote many deficiencies such as the effect of practice, the present invention provides a kind of Seesaw type bicycle assisted learning device.The present invention is not
The safety that can only protect children for learning to ride a bicycle well, main effect are that children can be helped to be ridden a bicycle in study
When it is fast and effective grasp from main modulation balance acrobatic elements, exercise in pace with studying grasp foot step on step on promote bicycle advance skill
Deng making children quickly and safely learn to ride a bicycle, save a large amount of practice periodses, moreover it is possible to the muscle power of training mate person is greatly reduced
Pay, save the time for accompanying study.
In order to achieve the above object, the present invention provides a kind of Seesaw type bicycle assisted learning device, it includes：
Stent, its one end are used to support the wheel shaft of bicycle rear；
Base, the other end of the stent are fixed on base, and the base is arc-shaped and is arranged symmetrically relative to stent, institute
The extending direction for stating base is vertical with the extending direction before and after bicycle；
Semicylinder, it is arranged at the underface of the base, and before and after the axis direction and bicycle of the semicylinder
Extending direction it is parallel.
The Seesaw type bicycle assisted learning device, wherein, further include damper, the damper be fixed on stent or
Keep contacting on base, and between bicycle rear and damper, bicycle rear is subject to frictional force.
The Seesaw type bicycle assisted learning device, wherein, the stent includes four columns and two pieces of adjustable plates, from
Every side of driving trailing wheel is both provided with the adjustable plate of two root posts and one piece of wheel shaft for being used to support bicycle rear, and four vertical
It is fixed on above the middle part of base, adjustable plate is arranged on column column symmetry.
The Seesaw type bicycle assisted learning device, wherein, the column is fixed on base with sliding fastener；
Or multiple holes are provided with base, the column is installed in hole and is fixed with bolt.
The Seesaw type bicycle assisted learning device, wherein, the adjustable plate is consolidated on column with sliding fastener
It is fixed；Or multiple holes are provided with column, the adjustable plate is installed in hole and is fixed with bolt.
The Seesaw type bicycle assisted learning device, wherein, it is additionally provided between the outside of each column and base tiltedly
The reinforcing rib put.
The Seesaw type bicycle assisted learning device, wherein, the both ends of the base be respectively arranged below with vibration damping wheel or
Beam.
The Seesaw type bicycle assisted learning device, wherein, the semicylinder is made of inside and outside two parts, exterior
The soft wear-resisting material of material selection, and internal material then selects rigid material, exterior wear-resistant material and internal rigid material
Material is adhesively fixed.
The Seesaw type bicycle assisted learning device, wherein, protection handle is further included, the protection handle is arranged at certainly
On rear side of the saddle of driving.
The Seesaw type bicycle assisted learning device, wherein, the protection handle includes fixation kit, elastomer and hand
Handle, the fixation kit are fixed at the standpipe on rear side of bicycle saddle, and the lower end of elastomer is fixed on inside fixation kit, hand
The upper end of the lower end connection elastomer of handle.
The beneficial effects of the invention are as follows：Realize and learn to ride a bicycle in a manner of simulating entirely in a specific place, fit
More places are answered, save space, and can safely, effectively help children or other crowd's Fast Learnings to ride a bicycle,
It can be adapted for the physical training of cyclist.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is the front view of Seesaw type bicycle assisted learning device according to the present invention；
Fig. 2 is the side view of Seesaw type bicycle assisted learning device according to the present invention.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not according to actual ratio.
Embodiment
The present invention will be further described with reference to the accompanying drawings.
First as depicted in figs. 1 and 2, the present invention provides a kind of Seesaw type bicycle assisted learning device, it mainly includes：Branch
Frame 1, base 2, semicylinder 3, damper 4 and protection handle 5.
One end of the stent 1 is used to support the wheel shaft of bicycle rear 10, and the other end is fixed on base 2.
Specifically, the stent 1 is mainly made of four columns 11 and two pieces of adjustable plates 12, and wherein bicycle rear is every
Side is both provided with two root posts 11 and one piece of adjustable plate 12, and four columns 11 are symmetrical and are securely fixed in the middle part of base 2
Top.In addition, tilting reinforcing rib 13 is additionally provided between the outside of each column 11 and base 2, for fixing pillar 11.Often
The middle part of block adjustable plate 12 be equipped with a U-type groove or hole be used to installing, the axle of stationary bicycle trailing wheel 10.And for the ease of adjusting
For spacing between two pieces of adjustable plates 12 of section to adapt to the bicycle of different model, fixed form of the column 11 on base 2 can be with
Fixed using sliding fastener, or play on base the Kong Zaiyong bolts of different distance and fix.In addition, for the ease of adjusting
High and low position of the plate 12 on column 11 is saved to adapt to the wheel of different-diameter, the combination page between column 11 and adjustable plate 12 can
To be fixed using sliding fastener, or play on column the Kong Zaiyong bolts of different distance and fix.If using sliding,
Fastener can be housed on adjustable plate 12；If using hole knockout, the top half of each column 11 is at a certain distance
Punching, 12 both ends of adjustable plate also will be corresponding to punchings.It should be noted that the hole on two opposite columns 11 is symmetrical, with
Two adjustable plates are kept in the same horizontal position.
Preferably, column 11 is made of section of circular or square material, it can be solid or hollow
's.
Preferably, the material of the column 11 and adjustable plate 12 can be steel, aluminium, plastics, glass fibre, chemistry fibre
Dimension, carbon fiber, ceramics etc., can also be fabricated to composite material by two or more in these materials.
The base 2 is arc-shaped or semicircle and is arranged symmetrically relative to stent 1, wherein the radian size or circle of arc
The radius size of shape can be designed according to the specification of exercising machine.Before and after the extending direction and bicycle of the base 2
Extending direction it is vertical, and the radian of base 2 towards ground direction protrude.The both ends of the base 2, which are respectively arranged below with, to be subtracted
Shake wheel 21, prevents base 2 from waving excessively.The damping wheel 21 can also be replaced by beam.Vibration damping wheel or beam can be
Solid or hollow is spherical or bar-shaped.
Preferably, the shape of the base 2 can be rectangle, oblong and oblate.
Preferably, the base 2 can be unitary solid tabular or hollow annular.
Preferably, the material of the base 2 can be steel, aluminium, plastics, glass fibre, chemical fibre, carbon fiber,
The homogenous materials such as ceramics or composite material is fabricated to by two or more in these materials；Preferably, damping
Wheel 21（Or beam）Can be by rubber, silicon rubber, the material that plastics or resin, cortex etc. have certain elasticity is made.
The effect of the base 2 includes：（1）Fixing bracket 1, hemispherical mass 3 and other associated components；（2）It can pass through
The action such as wave of handrail allows learner to realize to be swung left and right, so as to drive bicycle to make wiggly action；（3）Practice
Person can active control handlebar by bicycle follow exercising machine realize wave；（4）Control rocking tendency is protected in certain scope
Bicycle standing is held, the damping wheel at both ends plays a supportive role and keeps bicycle not fall down when waving excessive；（5）It can realize
When practitioner's foot, which steps on pedal analog bicycle, to move ahead, actually rear wheel but bicycle is as you were.
The underface of the base 2 is fixedly installed semicylinder 3, the axis direction and bicycle of the semicylinder 3
Front and rear extending direction is parallel, and in other words, semicylinder 3 can imitate bicycle tyre and plane contact.Wherein, the semicircle
Bottom of the bottom of cylinder 3 less than the roller 21 at 2 both ends of base so that base 2 is free to be swung left and right while can also limit
Rocking tendency processed keeps standing.
Preferably, the semicylinder 3 can be by rubber, silicon rubber, and plastics or resin, cortex etc. have certain elasticity
Material is made.It is highly preferred that the semicylinder 3 can be made of inside and outside two parts, soft wear-resisting material is selected in outside, and
Internal then select rigid material, the rigid material of exterior wear-resistant material and inside is adhesively fixed, and wherein exterior material can be
Rubber, nylon, aerated materials, gas injection bag, injecting glue material, plastics, cork, silica gel etc., internal material can be steel, aluminium,
Ceramics, bakelite composite material, resin composite materials etc. form.
The effect of semicylinder 3 is that base 2 is raised certain altitude, and only semicylinder 3 is contacted with ground at this time, makes study
Device can imitate the rocking action of bicycle on the way, and more approximate riding condition makes practice increase difficulty, and ability is obtained into one
Step improves；It is fixed in addition, semicylinder 3 is removably fixed with base 2, easy to require to use radius according to different practices
Semicylinder 3 of different sizes is practiced, such as the semicylinder 3 that beginner can select radius larger is installed on base 2
Lower section, and with the intensification of practice, can select that radius is smaller, the semicylinder of rocking tendency bigger 3 is installed under base 2
Side.
In addition, being additionally provided with damper 4 between the base 2 and bicycle rear 10, make bicycle rear 10 and damping
Suitable degree of contact is kept between device 4, bicycle rear 10 is subject to certain frictional force, so as to imitate bicycle on road surface
On actual forced status when driving.
Preferably, the damper 4 can be fixed on column 11 or on base 2.The shape of damper 4 can be cylinder
The slightly thick sub- bell type in the slightly thin both ends of build or centre, and the axis of the axis direction of damper 4 and bicycle rear 10
Line direction is parallel.
In order to adjust the frictional force size with wheel, fixation of the damper 4 on column 11 or base 2 should be elastic
It is or adjustable.For example, damper 4 is fixed on pillar 11 by the wheel shaft of adjustable length（As shown in Figure 2）.
Preferably, bearing can be installed between damper 4 and central shaft additional.
Preferably, the damper 4 is made of inside and outside two parts, and outside uses soft wear-resisting material, and internal material is
Rigid material, exterior wear-resistant material are adhesively fixed with internal material.Preferably, exterior material can be rubber, silica gel, Buddhist nun
Dragon, plastics, cork etc., internal material can be the compositions such as steel, aluminium, ceramics, bakelite composite material, resin composite materials.
The assisted learning device of the present invention further includes protection handle 5, after the protection handle 5 is arranged at the saddle of bicycle
Side, Protector hand steered can protect handle 5 so as to protect the safety of bicyclist.It is described protection handle 5 mainly by fixation kit 51,
Elastomer 52 and handle body 53 form.Wherein, the fixation kit 51 is fixed at the standpipe on rear side of bicycle saddle, elasticity
The lower end of body 52 is fixed on the inside of fixation kit 51, and the upper end of the lower end connection elastomer 52 of handle body 53.
Preferably, the fixation kit 51 can be integrally formed with the saddle of bicycle.
Preferably, the elastomer 52 can be spring, spring steel plate, elastomer or elastic adhesive tape etc..
More preferably, the handle will be designed so as to the planform of Protector's firm grip, can be metal, wood
The material such as matter, plastics, composite material is made.
Protection handle 5 is a kind of device for protecting bicyclist's safety, and equivalent to the extension of Protector's arm, it to protect
Set up between person and bicycle it is a kind of there is the connection of certain elasticity, and Protector is no longer bent over hand steered saddle, so as to protect
Protect bicyclist.Elastomer 52 can give the bicyclist space of certain self-recision, bicyclist self adjustment can be balanced at any time
State, if self cannot adjust, elastomer is pulled to the limit and affects Protector's application external force to be intervened, and returns to equilbrium position,
Avoid falling on Protector and bicyclist all bands；And protect handle 5 to reduce the amount of exercise of Protector, reduce muscle power expenditure.
The present invention operation principle be：When in use, bicycle rear is placed on to the adjustable plate 12 of the stent 1 of learner
On, practitioner, which directly rides over, learns or practices cycling on bicycle.And Protector hand steered can protect handle 5, further
Ensure the safety of bicyclist.
The critical skills that riding a bicycle to grasp are the equilibrium state for keeping bicycle constantly, this equilibrium state is
Feel that the subconsciousness to be formed is adjusted bicycle handle bar and controls to complete by cyclist during bicycle running,
Conditioned reflex is namely quickly formed when brain feels that bicycle has and tilts possible or trend, commander's four limbs are made corresponding dynamic
Make, operation is adjusted to bicycle handlebar, so as to keep stabilizing bicycle to move forwards surely.The key of children for learning cycling is just
It is this subconsciousness to be formed by lasting training, so since practitioner learn cycling and should practice first controlling handlebar
Practise.Directly it is trained with bicycle or can not realizes this training function using the various practice utensils beyond the present invention,
Therefore can only be by forming this ability with largely training passive disperse accumulation.The present invention is capable of the whole of real simulation cycling
A action process, while the cyclic process of " disequilibrium "-" rotation handlebar "-" realizing balance " ... can be simulated, promote
Conditioned reflex is set to send the control instruction to limbs, and then to the correct control of handlebar, while it is each to realize body
The cooperation technical ability and skill at position, grasp the basic skills of cycling.
Children are divided into two study stages when learning cycling using the present invention.First stage is that children ride voluntarily in study
It is artificial to manufacture bicycle unbalanced state to the left or to the right by training mate people by applying external force to car body during car, at the same time
Practitioner is asked to rotate handlebar to equidirectional.Then external force is applied with suitable frequency round about again and completes above-mentioned practice.
By more than training mate people's circulating repetition acting, and appropriate change occurs for the degree and frequency repeated every time, and repetition training makes study
Person establishes the conditioned reflex of " disequilibrium "-" rotation handlebar "-" realizing balance ", and then according to unbalanced journey
Degree and frequency accordingly adjust rapidly handlebar.Second stage is after practitioner sets up this conditioned reflex, is installed additional on base
The improvement learner of semicylinder is further simulated riding condition and is practiced, semicylinder approximation bicycle tyre, practitioner
It can be practiced closer to original place in the case of real, practice difficulty increase, ability is further enhanced.By this two
Practitioner can carry out practice of riding under the protection and help of Protector after the practice in a stage.Protection handle is fixed on certainly
Drive a vehicle under saddle, allow that Protector uprightly plays body and protection domain is broader, safer.
In conclusion the beneficial effects of the present invention are：Realize and learnt in a specific place in a manner of simulating entirely
Cycling, adapts to more places, saves space, and can safely, effectively help children or other crowd's Fast Learnings
Cycling, is readily applicable to the physical training of cyclist.
The above is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art,
Without departing from the invention herein, some improvement and supplement can also be made to the present invention, base is such as changed to cuboid fitting
Ground, damper is installed on base, and both sides install flexible reinforcement additional.Or bicycle is hung by ground etc. by stent.These
Improve and supplement is all on the basis of present invention realization learns cycling in a specific place in a manner of simulating entirely
Carry out, also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of Seesaw type bicycle assisted learning device, it includes：
Stent, its one end are used to support the wheel shaft of bicycle rear；
Base, the other end of the stent are fixed on base, and the base is arc-shaped and is arranged symmetrically relative to stent, institute
The extending direction for stating base is vertical with the extending direction before and after bicycle；
Semicylinder, it is arranged at the underface of the base, and before and after the axis direction and bicycle of the semicylinder
Extending direction it is parallel.
2. Seesaw type bicycle assisted learning device according to claim 1, it is characterised in that damper is further included, it is described
Damper is fixed on stent or base, and keeps contacting between bicycle rear and damper, is subject to bicycle rear
Frictional force.
3. Seesaw type bicycle assisted learning device according to claim 1, it is characterised in that the stent includes four and stands
Column and two pieces of adjustable plates, every side of bicycle rear are both provided with two root posts and one piece of wheel for being used to support bicycle rear
The adjustable plate of axis, four columns are symmetrically fixed on above the middle part of base, and adjustable plate is arranged on column.
4. Seesaw type bicycle assisted learning device according to claim 3, it is characterised in that the column on base with
Sliding fastener is fixed；Or multiple holes are provided with base, the column is installed in hole and is fixed with bolt.
5. Seesaw type bicycle assisted learning device according to claim 3, it is characterised in that the adjustable plate is on column
Fixed with sliding fastener；Or multiple holes are provided with column, the adjustable plate is installed in hole and is fixed with bolt.
6. Seesaw type bicycle assisted learning device according to claim 3, it is characterised in that the outside and bottom of each column
Tilting reinforcing rib is additionally provided between seat.
7. Seesaw type bicycle assisted learning device according to claim 1, it is characterised in that below the both ends of the base
It is respectively equipped with vibration damping wheel or beam.
8. Seesaw type bicycle assisted learning device according to claim 1, it is characterised in that the semicylinder by it is interior,
Outer two parts composition, exterior material selects soft wear-resisting material, and internal material then selects rigid material, exterior wear-resisting material
Expect to be adhesively fixed with internal rigid material.
9. Seesaw type bicycle assisted learning device according to claim 1, it is characterised in that further include protection handle, institute
Protection handle is stated to be arranged on rear side of the saddle of bicycle.
10. Seesaw type bicycle assisted learning device according to claim 1, it is characterised in that the protection handle includes
Fixation kit, elastomer and handle, the fixation kit are fixed at the standpipe on rear side of bicycle saddle, and the lower end of elastomer is consolidated
It is scheduled on inside fixation kit, the upper end of the lower end connection elastomer of handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039000.0A CN108001569B (en) | 2018-01-16 | 2018-01-16 | Rocker type bicycle auxiliary learning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039000.0A CN108001569B (en) | 2018-01-16 | 2018-01-16 | Rocker type bicycle auxiliary learning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108001569A true CN108001569A (en) | 2018-05-08 |
| CN108001569B CN108001569B (en) | 2024-05-10 |
Family
ID=62050764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810039000.0A Active CN108001569B (en) | 2018-01-16 | 2018-01-16 | Rocker type bicycle auxiliary learning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108001569B (en) |
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|---|---|---|---|---|
| US6120050A (en) * | 1999-04-29 | 2000-09-19 | Tillim; Stephen L. | Training device for use with a bicycle |
| US20020055422A1 (en) * | 1995-05-18 | 2002-05-09 | Matthew Airmet | Stationary exercise apparatus adaptable for use with video games and including springed tilting features |
| US6688630B1 (en) * | 2002-12-23 | 2004-02-10 | Stuart R Kayne | Bicycle training handle |
| US20040053751A1 (en) * | 2002-09-16 | 2004-03-18 | Pizolato Jesse Albert | Bicycle trainer allowing laterial rocking motion |
| US20150101149A1 (en) * | 2013-10-10 | 2015-04-16 | Brad Boger | Bicycle Training Handle |
| CN106581989A (en) * | 2017-01-03 | 2017-04-26 | 深圳大学 | Simulated riding table and control method thereof |
| CN206424526U (en) * | 2017-01-03 | 2017-08-22 | 深圳大学 | One kind emulates platform of riding |
| CN207826388U (en) * | 2018-01-16 | 2018-09-07 | 谭军 | A kind of Seesaw type bicycle assisted learning device |
-
2018
- 2018-01-16 CN CN201810039000.0A patent/CN108001569B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020055422A1 (en) * | 1995-05-18 | 2002-05-09 | Matthew Airmet | Stationary exercise apparatus adaptable for use with video games and including springed tilting features |
| US6120050A (en) * | 1999-04-29 | 2000-09-19 | Tillim; Stephen L. | Training device for use with a bicycle |
| US20040053751A1 (en) * | 2002-09-16 | 2004-03-18 | Pizolato Jesse Albert | Bicycle trainer allowing laterial rocking motion |
| US6688630B1 (en) * | 2002-12-23 | 2004-02-10 | Stuart R Kayne | Bicycle training handle |
| US20150101149A1 (en) * | 2013-10-10 | 2015-04-16 | Brad Boger | Bicycle Training Handle |
| CN106581989A (en) * | 2017-01-03 | 2017-04-26 | 深圳大学 | Simulated riding table and control method thereof |
| CN206424526U (en) * | 2017-01-03 | 2017-08-22 | 深圳大学 | One kind emulates platform of riding |
| CN207826388U (en) * | 2018-01-16 | 2018-09-07 | 谭军 | A kind of Seesaw type bicycle assisted learning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108001569B (en) | 2024-05-10 |
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