CN111016999A - Safe driving system of driving and pushing dual-purpose electric shopping cart - Google Patents
Safe driving system of driving and pushing dual-purpose electric shopping cart Download PDFInfo
- Publication number
- CN111016999A CN111016999A CN201911249129.5A CN201911249129A CN111016999A CN 111016999 A CN111016999 A CN 111016999A CN 201911249129 A CN201911249129 A CN 201911249129A CN 111016999 A CN111016999 A CN 111016999A
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- fixedly connected
- frame
- driving
- brake
- speed reducer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0026—Propulsion aids
- B62B5/0033—Electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0003—Adaptations for loading in or on a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0026—Propulsion aids
- B62B5/0066—Transmission of movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/0433—Braking mechanisms; Locking devices against movement foot operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B2005/0471—Disk brakes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention discloses a safe driving system of a driving and pushing dual-purpose electric shopping cart, which comprises a driving system and a braking system, wherein the driving system comprises a driving wheel, a braking wheel, a driving wheel, a braking wheel and a driving wheel; the driving system comprises a speed reducer, a motor, a controller, a power supply, a foot-operated speed regulator and a switch assembly, wherein the motor, the controller, the power supply, the foot-operated speed regulator and the switch assembly are connected through a lead; the controller, the power supply and the foot-operated speed regulator are arranged on the frame, the motor is in driving connection with the speed reducer, the speed reducer is fixedly connected to the frame through bolts, the power output end of the speed reducer is in driving connection with one of the rear wheels, the rear wheel is connected with the frame through a steering knuckle, and the other three wheels are in rotating connection with the frame through wheel shafts; the brake system comprises a brake pedal, a brake pump assembly, a brake disc and calipers; the brake pedal is connected with the frame through a bolt, and the brake pump assembly is fixedly connected to the frame. The motor, the speed reducer and the half shaft of the shopping cart are coaxially driven, so that the shopping cart is convenient to structurally arrange, and the shopping cart is compact in structure and small in size.
Description
Technical Field
The invention relates to the technical field of shopping equipment, in particular to a safe driving system of a driving and pushing dual-purpose electric shopping cart.
Background
The shopping cart is an indispensable tool in our lives, can improve more demands of buyers on one hand and further improve the volume of deals of sellers on the other hand, and can achieve a win-win result of killing two birds at a stroke.
With the improvement of living standard, the times of shopping are more and more frequent. In addition, the shopping cart is difficult to control due to inertia effect when people work for a long time and push the cart or the portable shopping basket for a long time. In addition, the traditional hand-push shopping cart cannot be used when the disabled goes to a supermarket for shopping; in addition, the elderly are weak and the elderly feel tired more and more when walking for a long time, which causes inconvenience.
A few electric shopping carts are adopted in some domestic supermarkets, but the electric shopping carts are labor-saving to push, but the problem of walking fatigue cannot be solved; in addition, some supermarkets also adopt driving shopping carts, but the shopping carts can only be driven, and people need to frequently go up and down when selecting commodities, so that the shopping is not very convenient for people to shop, and the pleasure brought to people by shopping is lost.
Therefore, a shopping cart which can be pushed and driven is needed, and can be switched freely according to the use requirement. The drive system is one of the most important systems of the shopping cart, and the drive system directly determines the operation performance of the shopping cart. However, the shopping cart has a small volume, and the conventional driving system is mostly in a chain type or belt type transmission, so that the structure is redundant, the size is large, and the shopping cart is inconvenient to arrange structurally.
In view of the above, it is desirable to provide a safe driving system for a driving and pushing electric shopping cart to solve the above problems.
Disclosure of Invention
The invention aims to provide a safe driving system of a driving and pushing dual-purpose electric shopping cart, wherein a motor, a speed reducer and a half shaft are coaxially driven, so that the shopping cart is convenient to structurally arrange, the structure is compact, and the size is small, so that the problems in the background art are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a safe driving system of a driving and pushing dual-purpose electric shopping cart comprises a driving system and a braking system; the driving system comprises a speed reducer, a motor, a controller, a power supply, a foot-operated speed regulator and a switch assembly, wherein the motor, the controller, the power supply, the foot-operated speed regulator and the switch assembly are connected through a lead; the controller, the power supply and the foot-operated speed regulator are arranged on the frame, the motor is in driving connection with the speed reducer, the speed reducer is fixedly connected to the frame, the power output end of the speed reducer is in driving connection with one of the rear wheels, and the rear wheel is connected with the frame through a steering knuckle; the brake system comprises a brake pedal, a brake pump assembly, a brake disc and calipers; the brake pedal is hinged to the frame, the brake pump assembly is fixedly connected to the frame, and the bottom of the brake pedal is hinged to the brake pump assembly; the brake disc and the calipers are both fixedly connected to the steering knuckle, the brake disc penetrates through gaps of the calipers, and the brake pump assembly is connected with the calipers through oil pipes.
The invention has the further improvement scheme that the rear end of the frame is fixedly connected with a U-shaped support frame, and the top of the support frame is fixedly connected with a control panel; the switch assembly comprises a start-stop switch, a forward switch and a backward switch, and the switch assembly is fixedly connected to the control panel.
The invention has the further improvement scheme that the steering knuckle comprises a shell, a spherical support, an inner half shaft and an outer half shaft, wherein the spherical support is fixedly connected to a support, and the shell is hinged to the spherical support through a pin shaft; the inner half shaft is rotationally connected to the inner sleeve at one end of the spherical support, the outer half shaft is rotationally connected to the outer sleeve at one end of the shell, the inner half shaft is connected with the outer half shaft through a universal joint, the inner half shaft is fixedly connected to the speed reducer, and the rear wheel is fixedly connected to the outer half shaft.
The invention has the further improvement scheme that a flange plate is fixedly connected to the outer half shaft, a brake disc is fixedly connected to the flange plate, the calipers are fixedly connected to a support plate, and the support plate is fixedly connected to the shell.
The invention has the further improvement scheme that the speed reducer is a planetary gear speed reducer, the motor is in driving connection with the input shaft through a spline, the input shaft is fixedly connected with the sun gear, and the output shaft fixed on the planet carrier is connected with the inner half shaft through a spline.
The invention has the further improvement scheme that the brake pedal is connected to a vertical rod on the left side of the frame through a pin shaft, and the brake pump assembly is obliquely and fixedly connected to the side part of the vertical rod; the foot speed regulator is pinned on the right side of the frame.
The invention has the further improvement scheme that four L-shaped plates are fixedly connected to the frame to form an accommodating cavity, and a power supply is placed in the accommodating cavity; four L-shaped plates fixedly connected to the frame form a containing cavity, the power supply is placed in the containing cavity, a top plate is arranged above the power supply, and the controller is fixedly connected to the bottom of the top plate.
A further development of the invention is that the housing is pushed or pulled by the steering system to turn along its hinge point with the spherical bearing and that the outer half-shaft follows the rotation of the housing.
In a further development of the invention, the electric motor is a brushless dc motor.
The invention has the further improvement scheme that cross bars are fixedly connected to two sides of the frame, and elevator wheels are arranged at the bottoms of the cross bars.
The invention has the beneficial effects that:
first, in the safe driving system of the driving and pushing dual-purpose electric shopping cart, the motor, the speed reducer and the half shaft are coaxially driven, so that the structure arrangement is convenient, the compact structure is ensured, and the size is smaller.
Secondly, the safe driving system of the driving and pushing dual-purpose electric shopping cart has stable and reliable power transmission; the large transmission ratio transmission is convenient to realize, and the instantaneous transmission ratio is constant; the bearing capacity is large, and the transmission efficiency is high.
Thirdly, the safe driving system of the driving and pushing dual-purpose electric shopping cart has the advantages of simple and understandable structure, scientific and reasonable design, low manufacturing cost, convenient maintenance and easy operation.
Fourthly, the safe driving system of the driving and pushing dual-purpose electric shopping cart adopts the disc brake as the braking system, and has the advantages of light weight, simple structure, convenient maintenance and low price.
Fifth, the safe driving system of the driving and pushing dual-purpose electric shopping cart of the invention is provided with elevator wheels on the frame for parking when getting on or off the elevator, thereby ensuring the safety of getting on or off the elevator.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a transmission principle diagram of the present invention.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example 1: as shown in FIGS. 1-4, a safe driving system for a driving and pushing dual-purpose electric shopping cart comprises a driving system and a braking system; the driving system comprises a speed reducer, a motor 2, a controller 22, a power supply 3, a foot-operated speed regulator 4 and a switch assembly 5 which are connected through a lead; the controller 22, the power supply 3 and the foot-operated speed regulator 4 are arranged on the frame 1, the motor 2 is in driving connection with the speed reducer, the speed reducer is fixedly connected on the frame 1 through bolts, the power output end of the speed reducer is in driving connection with one rear wheel 6, the rear wheel 6 is connected with the frame 1 through a steering knuckle 11, and the rest three wheels are in rotating connection with the frame 1 through wheel shafts; the brake system comprises a brake pedal 7, a brake pump assembly 8, a brake disc 9 and calipers 10; the brake pedal 7 is connected with the frame 1 through a bolt, the brake pump assembly 8 is fixedly connected to the frame 1, and the bottom of the brake pedal 7 is hinged to the brake pump assembly 8; the brake disc 9 and the caliper 10 are both fixedly connected to the steering knuckle 11, the brake disc 9 penetrates through a gap of the caliper 10, and the brake pump assembly 8 is connected with the caliper 10 through an oil pipe.
A U-shaped support frame 12 is welded at the rear end of the frame 1, and the top of the support frame 12 is fixedly connected with a control panel 13 through bolts; the switch assembly 5 includes a start-stop switch 501, a forward switch 502 and a backward switch (not shown), and is fixedly connected to the control panel 13 by screws.
The knuckle 11 comprises a shell 1101, a spherical support 1102, an inner half shaft 1103 and an outer half shaft 1104, the spherical support 1102 is fixedly connected to the bracket 20, and the shell 1101 is hinged to the spherical support 1102 through a pin shaft; the inner half-shaft 1103 is rotatably connected to an inner bushing at one end of the spherical bearing 1102 through a bearing, the outer half-shaft 1104 is rotatably connected to an outer bushing at one end of the housing 1101 through a bearing, the inner half-shaft 1103 is connected to the outer half-shaft 1104 through a universal joint (not shown), the inner half-shaft 1103 is fixedly connected to a speed reducer, and the rear wheel 6 is fixedly connected to the outer half-shaft 1104.
The flange 14 is welded on the outer half shaft 1104, the brake disc 9 is fixedly connected to the flange 14 through bolts, the caliper 10 is fixedly connected to the support plate 15 through bolts, and the support plate 15 is fixedly connected to the shell 1101 through bolts.
The speed reduction device is a planetary gear speed reducer 16, a gear ring of the planetary gear speed reducer 16 is fixedly connected to the frame 1 through bolts, the motor 2 is connected with an input shaft 1601 through a spline drive, the input shaft 1601 is fixedly connected with a sun gear 1602, a planet carrier 1604 is rotatably connected to a planet wheel 1603, an output shaft 1605 fixed on the planet carrier 1604 is connected with an inner half shaft 1103 through a spline, and the speed reduction ratio is
。
The brake pedal 7 is connected to a vertical rod 17 on the left side of the frame 1 through a pin shaft, the vertical rod 17 is welded to the frame 1, and the brake pump assembly 8 is obliquely and fixedly connected to the side portion of the vertical rod 17 through a bolt; the foot-operated speed regulator 4 is pinned on the right side of the frame 1; a seat frame 23 is arranged at the rear end of the frame 1, a foldable seat 24 is arranged on the seat frame 23, and when a user sits on the seat 24, the brake pedal 7 and the foot stepping speed regulator 4 are respectively positioned at the left foot and the right foot of the user.
Four L-shaped plates 18 fixedly connected to the frame 1 form an accommodating cavity, the power supply 3 is placed in the accommodating cavity, a top plate 19 is mounted above the power supply 3 through a support 20, the top plate 19 is fixedly connected to the support 20 through bolts, the support 20 is welded to the frame 1, and a controller 22 is fixedly connected to the bottom of the top plate 19 through bolts.
The housing 1101 is pushed or pulled by the steering system 21 to rotate along its hinge point with the spherical bearing 1102, and the outer half shafts 1104 rotate with the housing 1101.
In the embodiment, the power supply 3 selects a 48v, 18ah lithium battery pack; the motor 2 is a brushless direct current motor, and the main technical parameters are as follows: the voltage is 48V, the rated power is 500W, and the rated rotating speed is 3000 r/min; a PIC16F72 single chip microcomputer is selected as a circuit of the controller 22.
The specific working principle is as follows:
the present invention is a part of a series of applications of electric shopping cart for both driving and pushing, therefore the structure and principle of the steering system 21, the frame 1 and the seat 24 mentioned in the present technical solution are not specifically explained herein.
In a driving mode, the start-stop switch 501 is turned on, the whole driving system is powered on, the forward switch 502 is pressed, the motor 2 rotates forwards to drive the sun gear 1602 to rotate, the sun gear 1602 drives the planet gear 1603 to rotate, the planet carrier 1604 rotates along with the planet gear 1603, meanwhile, the output shaft 1605 on the planet carrier 1604 drives the inner half shaft 1103 to rotate, the inner half shaft 1103 drives the outer half shaft 1104 to rotate, meanwhile, the rear wheel 6 rotates along with the outer half shaft 1104, and the whole shopping cart runs forwards; when the shopping cart needs to retreat, the shopping cart is switched to a retreat switch; when the automobile is parked, the brake pedal 7 is stepped down, the brake disc 9 on the caliper 10 embraces the brake disc 9, and the rear wheel 6 can stop rotating; when steering, the steering system 21 pulls or pushes the housing 1101 of the knuckle 11, which can achieve steering without affecting the power transmission.
In the push mode, the start-stop switch 501 is turned off, and the shopping cart can be pushed by the user.
Example 2: the embodiment is a further improvement of the embodiment 1, and the main improvement is that although the embodiment 1 solves the technical problems of walking and braking of the shopping cart on a flat road surface, when the elevator is lifted, the user needs to push or pull the shopping cart with strength when the elevator is lifted due to a certain gradient of the elevator; in the present embodiment, the above-mentioned defects can be avoided, specifically:
the two sides of the frame 1 are welded with cross rods 25, and the bottom of each cross rod 25 is provided with an elevator wheel 26; the elevator wheel 26 is arranged on the frame 1 of the embodiment and used for parking when the elevator is lifted, so that the safety of lifting the elevator is ensured.
Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A safe driving system of a driving and pushing dual-purpose electric shopping cart is characterized in that: comprises a driving system and a braking system; the driving system comprises a speed reducer, a motor (2), a controller (22), a power supply (3), a foot-operated speed regulator (4) and a switch assembly (5), wherein the motor, the controller (22), the power supply, the foot-operated speed regulator and the switch assembly are connected through leads; the controller (22), the power supply (3) and the foot-operated speed regulator (4) are arranged on the frame (1), the motor (2) is in driving connection with the speed reducer, the speed reducer is fixedly connected to the frame (1) and the power output end of the speed reducer is in driving connection with one of the rear wheels (6), and the rear wheel (6) is connected with the frame (1) through a steering knuckle (11); the brake system comprises a brake pedal (7), a brake pump assembly (8), a brake disc (9) and calipers (10); the brake pedal (7) is hinged to the frame (1), the brake pump assembly (8) is fixedly connected to the frame (1), and the bottom of the brake pedal (7) is hinged to the brake pump assembly (8); brake disc (9) and calliper (10) all fixed connection are on knuckle (11), and brake disc (9) pass the clearance of calliper (10), and brake pump assembly (8) are connected with calliper (10) through oil pipe.
2. The system of claim 1, wherein the drive system comprises: the rear end of the frame (1) is fixedly connected with a U-shaped support frame (12), and the top of the support frame (12) is fixedly connected with a control panel (13); the switch component (5) comprises a start-stop switch (501), a forward switch (502) and a backward switch, and the start-stop switch, the forward switch and the backward switch are all fixedly connected to the control panel (13).
3. The system of claim 2, wherein the drive system comprises: the steering knuckle (11) comprises a shell (1101), a spherical support (1102), an inner half shaft (1103) and an outer half shaft (1104), the spherical support (1102) is fixedly connected to the support (20), and the shell (1101) is hinged to the spherical support (1102) through a pin shaft; the inner half shaft (1103) is rotatably connected with an inner sleeve at one end of the spherical support (1102), the outer half shaft (1104) is rotatably connected with an outer sleeve at one end of the shell (1101), the inner half shaft (1103) is connected with the outer half shaft (1104) through a universal joint, the inner half shaft (1103) is fixedly connected with the speed reducer, and the rear wheel (6) is fixedly connected with the outer half shaft (1104).
4. A safety drive system for a drive and push electric shopping cart as claimed in claim 3, wherein: the outer half shaft (1104) is fixedly connected with a flange (14), the brake disc (9) is fixedly connected to the flange (14), the caliper (10) is fixedly connected to the support plate (15), and the support plate (15) is fixedly connected to the shell (1101).
5. The system of claim 1, wherein the drive system comprises: the speed reducer is a planetary gear speed reducer (16), the motor (2) is in driving connection with the input shaft (1601) through a spline, the input shaft (1601) is fixedly connected with the sun gear (1602), and the output shaft (1605) fixed on the planet carrier (1604) is connected with the inner half shaft (1103) through the spline.
6. The system of claim 1, wherein the drive system comprises: the brake pedal (7) is connected to a vertical rod (17) on the left side of the frame (1) through a pin shaft, and the brake pump assembly (8) is obliquely and fixedly connected to the side part of the vertical rod (17); the foot stepping speed regulator (4) is in pin joint with the right side of the frame (1).
7. The system of claim 1, wherein the drive system comprises: four L-shaped plates (18) are fixedly connected to the frame (1) to form an accommodating cavity, the power supply (3) is placed in the accommodating cavity, a top plate (19) is arranged above the power supply (3), and the controller (22) is fixedly connected to the bottom of the top plate (19).
8. A safety drive system for a drive and push electric shopping cart as claimed in claim 3, wherein: the housing (1101) is pushed or pulled by the steering system (21) to rotate along its hinge point with the spherical bearing (1102), and the outer half shaft (1104) rotates following the housing (1101).
9. The system of claim 5, wherein the drive system comprises: the motor (2) is a brushless direct current motor.
10. A safety drive system for a drive and push electric shopping cart according to any one of claims 1-9, wherein: the car frame is characterized in that cross rods (25) are fixedly connected to two sides of the car frame (1), and elevator wheels (26) are arranged at the bottoms of the cross rods (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249129.5A CN111016999A (en) | 2019-12-09 | 2019-12-09 | Safe driving system of driving and pushing dual-purpose electric shopping cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249129.5A CN111016999A (en) | 2019-12-09 | 2019-12-09 | Safe driving system of driving and pushing dual-purpose electric shopping cart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111016999A true CN111016999A (en) | 2020-04-17 |
Family
ID=70205179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911249129.5A Pending CN111016999A (en) | 2019-12-09 | 2019-12-09 | Safe driving system of driving and pushing dual-purpose electric shopping cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111016999A (en) |
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| US20020063010A1 (en) * | 2000-11-29 | 2002-05-30 | Vincent Morin | Inboard brake system for a straddle-type all-terrain vehicle |
| CN102730098A (en) * | 2012-07-19 | 2012-10-17 | 吴江科沃客机械设备有限公司 | Sittable electrical shopping cart |
| CN202624503U (en) * | 2012-06-25 | 2012-12-26 | 李皓明 | Rear wheel drive (RWD) full foot-control third wheel electric vehicle |
| CN203902750U (en) * | 2013-12-09 | 2014-10-29 | 北京物资学院 | Electric intelligent shopping vehicle |
| CN105059113A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Vehicle-bridge structure |
| CN206984213U (en) * | 2017-05-13 | 2018-02-09 | 杨永康 | A kind of Multifunctional armchair type foot-controlled electric vehicle |
| CN109050638A (en) * | 2018-08-15 | 2018-12-21 | 罗文凤 | Foot-operated electric car and the supermarket's special electric shopping cart driven using foot-operated electric car |
| CN110450899A (en) * | 2019-08-14 | 2019-11-15 | 刘隆蓉 | A kind of pedal electric bicycle brake gear |
| CN211567990U (en) * | 2019-12-09 | 2020-09-25 | 淮阴工学院 | Safety driving system for multifunctional electric shopping cart |
-
2019
- 2019-12-09 CN CN201911249129.5A patent/CN111016999A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063010A1 (en) * | 2000-11-29 | 2002-05-30 | Vincent Morin | Inboard brake system for a straddle-type all-terrain vehicle |
| CN202624503U (en) * | 2012-06-25 | 2012-12-26 | 李皓明 | Rear wheel drive (RWD) full foot-control third wheel electric vehicle |
| CN102730098A (en) * | 2012-07-19 | 2012-10-17 | 吴江科沃客机械设备有限公司 | Sittable electrical shopping cart |
| CN203902750U (en) * | 2013-12-09 | 2014-10-29 | 北京物资学院 | Electric intelligent shopping vehicle |
| CN105059113A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Vehicle-bridge structure |
| CN206984213U (en) * | 2017-05-13 | 2018-02-09 | 杨永康 | A kind of Multifunctional armchair type foot-controlled electric vehicle |
| CN109050638A (en) * | 2018-08-15 | 2018-12-21 | 罗文凤 | Foot-operated electric car and the supermarket's special electric shopping cart driven using foot-operated electric car |
| CN110450899A (en) * | 2019-08-14 | 2019-11-15 | 刘隆蓉 | A kind of pedal electric bicycle brake gear |
| CN211567990U (en) * | 2019-12-09 | 2020-09-25 | 淮阴工学院 | Safety driving system for multifunctional electric shopping cart |
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