CN106043527A - Self-balancing wheelbarrow with automatic gravity center adjusting function - Google Patents
Self-balancing wheelbarrow with automatic gravity center adjusting function Download PDFInfo
- Publication number
- CN106043527A CN106043527A CN201610447093.1A CN201610447093A CN106043527A CN 106043527 A CN106043527 A CN 106043527A CN 201610447093 A CN201610447093 A CN 201610447093A CN 106043527 A CN106043527 A CN 106043527A
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- China
- Prior art keywords
- wheelbarrow
- pedal
- screw mandrel
- motor
- auxiliary wheel
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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.)
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Classifications
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- 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
- B62K1/00—Unicycles
-
- 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
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
-
- 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
- B62K2202/00—Motorised scooters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rehabilitation Tools (AREA)
- Handcart (AREA)
Abstract
The invention discloses a self-balancing wheelbarrow with an automatic gravity center adjusting function. The self-balancing wheelbarrow comprises a wheelbarrow body and two pedals mounted on mounting columns on the two sides of the wheelbarrow body. Each pedal is rotatably connected with a lead screw, a motor used for driving the corresponding lead screw to rotate is mounted in the pedal, and the lead screw is in transmission connection with the corresponding mounting column through threads; and the motors are electrically connected with a controller of the wheelbarrow. When the speed of the wheelbarrow is high, the motors drive the lead screws to rotate reversely to make the pedals move to the rear area in the advancing direction of the wheelbarrow, in this way, when the wheelbarrow needs to be braked, a user just needs to lean backwards slightly, the gravity center is moved to the rear portion of the wheelbarrow immediately, braking can be achieved in time, and the situation that the user falls down as leaning backwards by a large amplitude can be avoided.
Description
This patent is:
Invention entitled: a kind of self-balancing wheelbarrow with center of gravity automatic regulation function
Application No.: 2014108272540
Filing date: 2014.12.25
The divisional application of patent application.
Technical field
The invention belongs to wheelbarrow construction applications, be specifically related to a kind of self-balancing single wheel with center of gravity automatic regulation function
Car.
Background technology
Self-balancing electronic wheelbarrow is a kind of driven by power, has the walking-replacing tool of homeostasis function；At full speed in society
Today of development, traffic congestion has also become universal phenomenon, and electric unicycle replaces bicycle and the electric motor car as the vehicles to be
The development of fashion.The rise of Self-balancing electronic wheelbarrow, will cause a new traffic revolution；Existing electric single-wheel
Car is when riding, and user controls wheelbarrow accordingly advance or brake, when with faster by adjusting forward lean or layback
When degree needs emergency brake during riding, health subconsciously can be swung back and be made wheelbarrow to the greatest extent by user greatly
Brake soon, but the excessive crank that easily causes of angle of layback causes falling, and there is unsafe factor, and the electricity of wheelbarrow
Machine stress crosses conference makes immediate current excessive, affects the service life of motor.
Summary of the invention
The technical problem to be solved is: the deficiency existed for prior art, it is provided that a kind of simple in construction is skilful
Wonderful, it is possible to transition layback when avoiding user to bring to a halt and cause crank and fall down there is center of gravity automatic regulation function
Self-balancing wheelbarrow.
For realizing the purpose of the present invention, it is achieved by the following technical solutions: one has center of gravity automatic regulation function
Self-balancing wheelbarrow, include car body and two pedals being arranged in the mounting post of car body both sides, described in one or two
The lower surface of pedal is provided with auxiliary wheel system；Described auxiliary wheel system includes auxiliary wheel, installs propping up of described auxiliary wheel
Strut, be molded over the mounting seat being rotationally connected below described pedal and with described support bar, is rotationally connected in the middle part of support bar
Drive rod, and the slide block being rotationally connected with the drive rod other end, described auxiliary wheel is in below pedal after the car body
Side, side, described slide block is slidably mounted in described pedal；The driving driving described slide block to slide it is also equipped with in described pedal
System: described drive system includes the second motor being arranged in pedal, fixes with described second motor output shaft and is connected
The second screw mandrel, described second screw mandrel is connected by screw-driven with described slide block；The second described screw mandrel and described slide block
Glide direction is parallel, and the side of described slide block forms and coordinates, with described second screw mandrel, the tooth bar being in transmission connection；Step on described in two
It is rotatably connected to first screw mandrel along car body fore-and-aft direction on plate, is provided with one in pedal in order to drive the first screw mandrel to rotate
The first motor, described first screw mandrel is connected by screw-driven with described mounting post；Described first motor, the second motor are respectively
Electrically connecting with the controller of wheelbarrow, when wheelbarrow speed is less than the first normal speed, controller controls the first motor and drives
First screw mandrel rotates so that pedal moves to wheelbarrow direct of travel front, and controller controls the second motor driving auxiliary simultaneously
Wheel declines；When wheelbarrow speed is higher than the second normal speed, controller controls the first motor and drives the first screw mandrel opposite direction to turn
Dynamic so that pedal moves to the rear of wheelbarrow direct of travel, controller controls the second motor driving auxiliary wheel rise simultaneously；
Described second normal speed is more than the first normal speed.
Preferably: the first described normal speed is 3km/h, the second described normal speed is 12km/h, institute
The forward and backward mobile range stating pedal is 20-50mm.
Preferably: two described pedals only have below a pedal and auxiliary wheel system, described auxiliary are installed
Wheel drops to during extreme position concordant with the wheel lower surface of wheelbarrow.
Preferably: below two described pedals, be mounted on auxiliary wheel system, described auxiliary wheel drops to the limit
5-15mm is exceeded than the wheel lower surface of wheelbarrow during position.
Compared with prior art, the invention has the beneficial effects as follows: when wheelbarrow speed is higher than the second normal speed (
During wheelbarrow speed), motor drives screw mandrel to rotate backward and make pedal move to the rear of wheelbarrow direct of travel, so when
When needing brake, as long as user health is somewhat swung back, center of gravity is the most mobile to wheelbarrow rear portion, it is possible to realize brake in time also
Ensure that the user amplitude of leaning back will not be excessive and cause falling down.When wheelbarrow speed is decreased below the first normal speed
(when i.e. wheelbarrow speed is relatively low), motor drives screw mandrel to rotate and makes pedal move to the front of wheelbarrow direction of advance, so make
User's health that need not to lean forward can keep wheelbarrow low speed and at the uniform velocity travel, thus reduce shank firmly；Auxiliary wheel simultaneously
Decline and contact with ground, can also stably stand on pedal, no accordingly even when wheelbarrow runs at a low speed the user that even stops
Needs are got off, very easy to use；And speed also quickly falls to below the first normal speed when braking, auxiliary wheel immediately under
Fall, and pedal is not able to do in time to move to the front of wheelbarrow direction of advance, the most now auxiliary wheel is in the rear of vehicle body side
Position (wheelbarrow wheel and the rear of ground-contacting position), it is possible to play the effect that auxiliary supports, it is ensured that will not be because of use
Person swings back that amplitude is excessive and to cause wheelbarrow motor to bear moment of torsion excessive and out of control, improves safety.
Accompanying drawing explanation
Fig. 1, Fig. 2, Fig. 3 are the structural representations of the present invention.
Fig. 4 is the structural representation of the pedal being provided with screw mandrel.
Fig. 5 is the attachment structure schematic diagram being provided with each parts of auxiliary wheel system with pedal.
Fig. 6 is the structural representation of pedal.
1, car body；11, mounting post；2, pedal；20, mounting seat；21, motor installation cavity；22, slide rail；23, auxiliary wheel accommodates
Chamber；24, screw mandrel installation cavity；25, the first motor；26, the first screw mandrel；3, support bar；4, auxiliary wheel；5, drive rod；6, power supply is opened
Close；7, slide block；8, the second motor；9, the second screw mandrel.
Detailed description of the invention
Below according to accompanying drawing, the detailed description of the invention of the present invention is made a detailed explanation.
Embodiment 1
According to Fig. 1 and Fig. 6, a kind of self-balancing wheelbarrow with center of gravity automatic regulation function described in the present embodiment, bag
Include car body 1 and two pedals 2 being arranged in car body both sides mounting post 11, the lower surface peace of one or two described pedal
Equipped with auxiliary wheel system；Described auxiliary wheel system includes auxiliary wheel 4, installs the support bar 3 of described auxiliary wheel, is molded over institute
State the mounting seat 20 being rotationally connected below pedal and with described support bar, with support bar in the middle part of the drive rod 5 that is rotationally connected, and
The slide block 7 being rotationally connected with the drive rod other end, described auxiliary wheel is near side, car body rear below pedal, described
Slide block is slidably mounted in described pedal；The drive system driving described slide block to slide it is also equipped with: described in described pedal
Drive system includes the second motor 8 being arranged in pedal, fixes, with described second motor output shaft, the second screw mandrel being connected
9, described second screw mandrel is connected by screw-driven with described slide block；The second described screw mandrel is flat with the glide direction of described slide block
OK, the side of described slide block forms and coordinates, with described second screw mandrel, the tooth bar being in transmission connection；Along car body on two described pedals
Fore-and-aft direction is rotatably connected to first screw mandrel 26, is provided with one in order to the first electricity driving the first screw mandrel to rotate in pedal
Machine 25, described first screw mandrel is connected by screw-driven with described mounting post；Described first motor, the second motor respectively with single wheel
Car controller electrical connection, when wheelbarrow speed less than 3km/h time, controller control the first motor drive first screw mandrel rotate from
And making pedal move to wheelbarrow direct of travel front, controller controls the second motor driving auxiliary wheel decline simultaneously；Work as single wheel
When vehicle speed is higher than 12km/h, controller controls the first motor and drives the first screw mandrel opposite direction to rotate so that pedal is to wheelbarrow
The rear of direct of travel is moved, and controller controls the second motor driving auxiliary wheel rise simultaneously.
Described pedal end offers the motor installation cavity 21 installing described motor, the inner side of motor installation cavity in pedal
Offering leading screw installation cavity 24, pedal end differs from the position of motor installation cavity and offers slide rail 22, and it is sliding that slide rail is perpendicular to slide block
The side in dynamic direction connects with described leading screw installation cavity.The auxiliary accommodating collapsed state auxiliary wheel is offered bottom described pedal
Wheel accommodates chamber 23.
Only having in two described pedals below a pedal and be provided with auxiliary wheel system, described auxiliary wheel drops to limit position
When putting, the wheel lower surface with wheelbarrow is concordant, and such auxiliary wheel coordinates with wheel and can stably support wheelbarrow, is so
Wheelbarrow is made to run at a low speed even to stop user stably to stand on pedal, it is not necessary to get off,
One notch portion of described pedal intermediate formation, the big 20-50mm of width of the width ratio mounting post of notch portion, namely steps on
The amplitude that plate is movable.Described motor is arranged on side in pedal, and motor output shaft is the most coaxially connected with screw mandrel；Or electricity
Machine output shaft connects train of reduction gears, and then the outfan of train of reduction gears is connected with screw mandrel.When this pedal is provided with auxiliary wheel
During system, the second motor of auxiliary wheel system is arranged on the opposite side of pedal.
The link position of the first screw mandrel and pedal near the top of pedal, the bottom of pedal and mounting post lateral wall offset from
And make pedal can maintain level after launching.
Described controller enables the controller to equipped with gyro sensor and acceleration transducer, gyro sensor
Controlling wheelbarrow fore-and-aft direction and be in the poised state of level, when body gravity deflection front or behind, controller is correspondingly
Controlling motor forward or reverse, when the amplitude of user body forward, rear-inclined is the biggest, it is inclined that acceleration transducer detects
Shifting amount is the biggest, then controller correspondingly controls the rotating speed increase of motor.
For the electric unicycle that wheel is 14 inches, when wheelbarrow speed is higher than 12km/h, controller controls motor
Driving screw mandrel to rotate backward makes pedal move to the rear of wheelbarrow direct of travel, so when needs brake, if user
Health is somewhat swung back, and center of gravity is at once mobile to wheelbarrow rear portion, it is possible to realize braking in time and ensure that user is leaned back width
Degree will not be excessive and cause falling down.When wheelbarrow speed is decreased below the first normal speed, (wheelbarrow speed is relatively low
Time), motor drives screw mandrel rotation to make pedal move to the front of wheelbarrow direction of advance, and such user need not the health that leans forward
Wheelbarrow low speed can be kept and at the uniform velocity travel, thus reducing exerting oneself of shank；Auxiliary wheel decline simultaneously contacts with ground, so
Can also stably stand on pedal even if wheelbarrow runs at a low speed the user that even stops, it is not necessary to get off, use the most square
Just；And speed also quickly falls to below the first normal speed when braking, auxiliary wheel declines immediately, and pedal is not able to do in time
Moving to the front of wheelbarrow direction of advance, the most now auxiliary wheel is in rear position (wheelbarrow wheel and the ground of vehicle body side
The rear of face contact position), it is possible to play the effect that auxiliary supports, it is ensured that will not cause because user layback amplitude is excessive
It is excessive and out of control that wheelbarrow motor bears moment of torsion, improves safety.
For the electric unicycle that wheel is 16 inches, can set when wheelbarrow speed is higher than 15km/h, motor drives
Screw mandrel rotates backward and makes pedal move to the rear of wheelbarrow direct of travel.
Embodiment 2
A kind of self-balancing wheelbarrow with center of gravity automatic regulation function described in the present embodiment, includes car body 1 and installs
Two pedals 2 in car body both sides mounting post 11, the lower surface of one or two described pedal is provided with auxiliary wheel system；Institute
The auxiliary wheel system stated includes auxiliary wheel 4, installs the support bar 3 of described auxiliary wheel, be molded over below described pedal and with institute
State the mounting seat 20 that support bar is rotationally connected, with support bar in the middle part of the drive rod 5 that is rotationally connected, and turn with the drive rod other end
The slide block 7 being dynamically connected, described auxiliary wheel is near side, car body rear below pedal, and described slide block is slidably mounted on institute
State in pedal；The drive system driving described slide block to slide it is also equipped with: described drive system includes peace in described pedal
The second motor 8 being contained in pedal, fixes the second screw mandrel 9 being connected with described second motor output shaft, described second screw mandrel with
Described slide block is connected by screw-driven；The second described screw mandrel is parallel with the glide direction of described slide block, the side of described slide block
Face forms and coordinates, with described second screw mandrel, the tooth bar being in transmission connection；It is rotatably connected to one along car body fore-and-aft direction on described pedal
Individual first screw mandrel 26, be provided with in pedal one in order to drive first screw mandrel rotate the first motor 25, described first screw mandrel with
Described mounting post is connected by screw-driven；Described first motor, the second motor electrically connect with the controller of wheelbarrow respectively, and
One switching in order to switch controller control mode being electrically connected with the controller is installed on car body switch；Switching switch is positioned at
During the first state, control mode is same as in Example 1, and i.e. when wheelbarrow speed is less than 3km/h, controller controls the first electricity
Machine drives the first screw mandrel to rotate so that pedal moves to wheelbarrow direct of travel front, and controller controls the second motor and drives simultaneously
Dynamic auxiliary wheel declines；When wheelbarrow speed is higher than 12km/h, controller controls the first motor and drives the first screw mandrel opposite direction to turn
Dynamic so that pedal moves to the rear of wheelbarrow direct of travel, controller controls the second motor driving auxiliary wheel rise simultaneously；
When switching switch and pushing another state, controller control mode changes, and when wheelbarrow speed improves, motor drives screw mandrel
Rotating forward and make pedal move to wheelbarrow direct of travel front, when wheelbarrow speed declines, motor drives screw mandrel reversely to turn
Moving makes pedal move to the rear of wheelbarrow direct of travel, and when wheelbarrow speed is less than 3km/h, controller controls the second electricity
Machine drives auxiliary wheel to decline.
When switching switch and being in the first state, it is suitable in the case of or ground more people is uneven using,
So it is beneficial to brake safely, identical with embodiment 1 purpose.When switching switch and being in the second state, it is suitable for
Spacious flat road surface travels (in the case of i.e. need not emergency brake), is particularly suited for distance travel farther out；Specifically, car is worked as
Speed improve after, pedal moves forward, and makes user center of gravity be moved along, such user health avoided the need for significantly to
Top rake, health (especially shank) need not make power, reduces the feeling of fatigue ridden in remote way.
Being mounted on auxiliary wheel system below two described pedals, described auxiliary wheel compares wheelbarrow when dropping to extreme position
Wheel lower surface exceed 5-15mm.So can tilt toward either side when running at a low speed or stop, rely on an auxiliary wheel
Coordinate with wheel and maintain balance, and two auxiliary wheels will not land with wheel simultaneously, it is ensured that wheel unsettled will not cause single wheel
Car disequilibrium.
Claims (1)
1. a self-balancing wheelbarrow with center of gravity automatic regulation function, it is characterised in that: include car body and be arranged on
Two pedals in the mounting post of car body both sides, the lower surface of one or two described pedal is provided with auxiliary wheel system；Described
Auxiliary wheel system includes auxiliary wheel, installs the support bar of described auxiliary wheel, be molded over below described pedal and with described support
The drive rod being rotationally connected in the middle part of the mounting seat that bar is rotationally connected, with support bar, and be rotationally connected with the drive rod other end
One slide block, described auxiliary wheel is near side, car body rear below pedal, and described slide block is slidably mounted in described pedal；
The drive system driving described slide block to slide it is also equipped with: described drive system includes and is arranged in pedal in described pedal
The second motor, fix the second screw mandrel being connected with described second motor output shaft, described second screw mandrel passes through with described slide block
Screw-driven connects；The second described screw mandrel is parallel with the glide direction of described slide block, and the side of described slide block forms and institute
State the second screw mandrel and coordinate the tooth bar being in transmission connection；It is rotatably connected to first screw mandrel along car body fore-and-aft direction on described pedal,
It is provided with one in pedal and passes through spiral shell in order to the first motor driving the first screw mandrel to rotate, described first screw mandrel and described mounting post
Stricture of vagina is in transmission connection；Described first motor, the second motor electrically connect with the controller of wheelbarrow respectively, and are provided with one on car body
The switching in order to switch controller control mode being electrically connected with the controller switchs；When switching switch is positioned at the first state, when
When wheelbarrow speed is less than 3km/h, controller controls the first motor and drives the first screw mandrel to rotate so that pedal is to single wheel garage
Entering front, direction to move, controller controls the second motor driving auxiliary wheel decline simultaneously；When wheelbarrow speed is higher than 12km/h,
Controller controls the first motor and drives the first screw mandrel opposite direction to rotate so that pedal moves to the rear of wheelbarrow direct of travel,
Controller controls the second motor driving auxiliary wheel rise simultaneously；When switching switch and pushing another state, controller controlling party
Formula changes, and when wheelbarrow speed improves, motor driving screw mandrel rotates forward and makes pedal move to wheelbarrow direct of travel front,
When wheelbarrow speed declines, motor driving screw mandrel rotates backward and makes pedal move to the rear of wheelbarrow direct of travel, and works as
When wheelbarrow speed is less than 3km/h, controller controls the second motor and drives auxiliary wheel to decline；
Auxiliary wheel system it is mounted on, than the car of wheelbarrow when described auxiliary wheel drops to extreme position below two described pedals
Wheel lower surface exceeds 5-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447093.1A CN106043527A (en) | 2014-12-25 | 2014-12-25 | Self-balancing wheelbarrow with automatic gravity center adjusting function |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827254.0A CN104494751B (en) | 2014-12-25 | 2014-12-25 | Self-balancing monocycle with automatic gravity center regulation function |
| CN201610447093.1A CN106043527A (en) | 2014-12-25 | 2014-12-25 | Self-balancing wheelbarrow with automatic gravity center adjusting function |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410827254.0A Division CN104494751B (en) | 2014-12-25 | 2014-12-25 | Self-balancing monocycle with automatic gravity center regulation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106043527A true CN106043527A (en) | 2016-10-26 |
Family
ID=52936237
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610447093.1A Pending CN106043527A (en) | 2014-12-25 | 2014-12-25 | Self-balancing wheelbarrow with automatic gravity center adjusting function |
| CN201410827254.0A Expired - Fee Related CN104494751B (en) | 2014-12-25 | 2014-12-25 | Self-balancing monocycle with automatic gravity center regulation function |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410827254.0A Expired - Fee Related CN104494751B (en) | 2014-12-25 | 2014-12-25 | Self-balancing monocycle with automatic gravity center regulation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106043527A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2538277B (en) * | 2015-05-13 | 2021-04-14 | Artemev Timur | Self-balancing powered unicycle device |
| CN105676858A (en) * | 2016-03-02 | 2016-06-15 | 深圳市美莱创新股份有限公司 | Self-balancing two-wheel balance vehicle and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203844932U (en) * | 2014-06-04 | 2014-09-24 | 福州互联在线网络科技有限公司 | Monocycle with pedal opening/closing device |
| CN104192226A (en) * | 2014-09-25 | 2014-12-10 | 李陈 | Wheelbarrow with auxiliary wheel |
| CN204021085U (en) * | 2014-08-31 | 2014-12-17 | 李陈 | The wheelbarrow that a kind of pedal can automatically fall and pack up |
| CN204021087U (en) * | 2014-08-31 | 2014-12-17 | 李陈 | A kind of Self-balancing electronic wheelbarrow |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6561294B1 (en) * | 1995-02-03 | 2003-05-13 | Deka Products Limited Partnership | Balancing vehicle with passive pivotable support |
| US8807250B2 (en) * | 2010-03-09 | 2014-08-19 | Shane Chen | Powered single-wheeled self-balancing vehicle for standing user |
| CN202806968U (en) * | 2012-04-11 | 2013-03-20 | 浙江易力车业有限公司 | Self-balance electric manned monocycle |
| CN204021088U (en) * | 2014-08-31 | 2014-12-17 | 李陈 | A kind of pedal system of Self-balancing electronic wheelbarrow |
| CN104163220B (en) * | 2014-08-31 | 2016-08-24 | 李陈 | A kind of automatic pedal system of electric unicycle |
-
2014
- 2014-12-25 CN CN201610447093.1A patent/CN106043527A/en active Pending
- 2014-12-25 CN CN201410827254.0A patent/CN104494751B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203844932U (en) * | 2014-06-04 | 2014-09-24 | 福州互联在线网络科技有限公司 | Monocycle with pedal opening/closing device |
| CN204021085U (en) * | 2014-08-31 | 2014-12-17 | 李陈 | The wheelbarrow that a kind of pedal can automatically fall and pack up |
| CN204021087U (en) * | 2014-08-31 | 2014-12-17 | 李陈 | A kind of Self-balancing electronic wheelbarrow |
| CN104192226A (en) * | 2014-09-25 | 2014-12-10 | 李陈 | Wheelbarrow with auxiliary wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104494751A (en) | 2015-04-08 |
| CN104494751B (en) | 2017-01-25 |
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Application publication date: 20161026 |