CN201385733Y - Foldable and portable electric motor car - Google Patents
Foldable and portable electric motor car Download PDFInfo
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- CN201385733Y CN201385733Y CN200920145114U CN200920145114U CN201385733Y CN 201385733 Y CN201385733 Y CN 201385733Y CN 200920145114 U CN200920145114 U CN 200920145114U CN 200920145114 U CN200920145114 U CN 200920145114U CN 201385733 Y CN201385733 Y CN 201385733Y
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Abstract
The utility model relates to a foldable and portable electric motor car. The traveling part of the electric motor car comprises two front wheels and a rear wheel, wherein, the front wheels comprises a left front wheel and a right front wheel which are mounted on two motor output shafts directly side by side; the rear wheel is arranged in the middle and can swerve freely; front wheels brackets and a rear wheel bracket are connected through a rotating shaft and a pull rod, take the X-shape when unfolded, and take the I-shape when folded, so that the electric motor car is taken as a baggage car; a handle and a motor controller are mounted on the rear wheel bracket; a control button is arranged on the handle; a singlechip chip is arranged in the motor controller; the pins of the singlechip chip are connected with the sending and receiving pins of a left-right swerve control potentiometer, a speed control potentiometer, a braking control potentiometer, a motor-driven device, a motor revolution transmitter, a light driver, a buzzer, a display screen, a keyboard, a storage battery voltage detection circuit, and an RS-232 interface chip. By adopting the scheme, the size of the whole electric motor car is reduced, and the dead weight of the electric motor car is light, thereby providing convenience to a user for carrying the electric motor car while riding other vehicles, going shopping, or going upstairs/downstairs.
Description
Affiliated technical field
The utility model relates to a kind of battery-driven car, especially can fold the battery-driven car that is convenient for carrying.
Background technology
At present, known Electrical Bicycle is as the vehicle of omnidistance single use and design-calculated, the needs of riding have for a long time been considered, used motor and battery all compare heavy, also will consider the traveling comfort of riding for a long time in addition and ride function voluntarily, overall dimensions of a car and deadweight all are not suitable for carrying.Chinese patent literature application number: 200420013401.2, title: a kind of folding electric bicycle and application number: 200720002669.X, title: triangle collapse battery-driven car etc. also provides the scheme of some electric motor bicycle with folding, but carry the people that they are taken other vehicle, remove market shopping and stair activity for hope, they all also seem light inadequately.
Summary of the invention
Existing folding electric bicycle volume after folding is big in order to overcome, Heavy Weight, carries light inadequately deficiency, and the utility model provides a kind of portable folding battery-driven car scheme, makes the car load volume after folding little, and is from heavy and light, easy to carry.
The technical scheme of the utility model technical solution problem is: the crawler body of this car is made up of about two front-wheel and trailing wheels placed in the middle side by side, two front-wheels are installed in respectively on the output shaft of two motors, two motors are separately fixed at the bottom of left and right sides front-wheel support again, and motor output shaft all assembles motor speed sensor; The bottom of left and right sides front-wheel support interconnects fixing with crossbeam, a stretcher respectively is installed about on the crossbeam, and stretcher is grouped into by suspended portion and pedal position, and the two connects with hinge, and suspended portion is installed on the crossbeam with bolt, and foot-operated part can upwards fold; Rear wheel support is made of two joint sleeve pipes up and down, but among the joint sleeve pipe, a trailing wheel capable of free rotation is installed in the rear wheel support bottom under the indentation of last joint, and joint is equipped with handle and electric machine controller on the rear wheel support, have read-out and keyboard on the electric machine controller, handle is provided with the control button; The middle part of left and right sides front-wheel support is connected with a rotating shaft at the middle part of joint down with rear wheel support; Connect a pull bar separately with a rotating shaft respectively in left and right sides front-wheel support inside top, pull bar constitutes by two joints, and promptly prosthomere pull bar and deutomerite pull bar are middle respectively with a rotating shaft connection; The other end of left and right sides prosthomere pull bar is connected respectively in the left and right sides rotating shaft on joint top under the rear wheel support; Fix a vehicle seat above the prosthomere pull bar of the left and right sides, be provided with concave groove below the vehicle seat, the part of deutomerite pull bar can be embedded wherein when car exhibition is opened, the vehicle seat back is to upper overturning; Motor driver is installed on the front-wheel support of the left and right sides, and storage battery is installed in the crossbeam or on the crossbeam; A slice singlechip chip is arranged in the circuit for controlling motor, its pin respectively with about turn to CONTROLLED POTENTIAL device, speed control potential device, brake CONTROLLED POTENTIAL device, motor driver, motor speed sensor, light actuator, buzzer phone, read-out, keyboard, accumulator voltage detecting circuit and RS-232 interface chip transmission, receive pin and be connected.
The beneficial effects of the utility model are: novel structure design makes the car load volume after folding little, from heavy and light, launch or fold rapidly, can take other vehicle for carrying as dragging baggage car to walk in tow after folding, go market shopping and stair activity that convenience is provided.Because crawler body is the three-wheel configuration, the utility model also is particularly suitable for the elderly and uses; The function that general electric motor car with two wheels such as in addition, the utility model can also realize turn-taking in the original place, reversing, the utmost point proceed slowly, program control, remote control, automatic steering can't be realized.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 a is the front view after the utility model launches.
Fig. 1 b is the left view after the utility model launches.
Fig. 1 c is the birds-eye view after the utility model launches.
Fig. 2 is the three-view diagram after the utility model folds.
Fig. 1,1. the near front wheels among Fig. 2,2. off front wheel, 3. trailing wheel, 4. left motor, 5. right motor, 6. the near front wheel support, 7. off front wheel support, 8. crossbeam, 9. left foot pedal, 10. right steps, 11. hinges, 12. bolt of rear end plates, 13. rear wheel support is joint down, 14. save 15. handles, 16. electric machine controllers on the rear wheel support, 17. left-hand rotation key, 18. the right-hand rotation key, 19. speed governing keys, 20. brake keys, 21. front and back wheel rack shaft, 22. the rotating shaft of the near front wheel support and left side deutomerite pull bar, the rotating shaft of 23. off front wheel supports and right side deutomerite pull bar, 24. left side deutomerite pull bars, 25. right side deutomerite pull bar, 26. left side pull bar intermediate rotary shaft, 27. right side pull bar intermediate rotary shaft, 28. left side prosthomere pull bars, 29. right side prosthomere pull bar, 30. the rotating shaft of rear wheel support and left side prosthomere pull bar, the rotating shaft of 31. rear wheel supports and right side prosthomere pull bar, 32. vehicle seats, 33. vehicle seat bolt of rear end plate, 34. left motor driver, 35. right motor drivers, 36. storage batterys, 37. left steering lamp, 38. the right steering lamp, 39. stoplight stop lamps, 40. headlights, 43. left motor speed sensor, 44. right motor speed sensor, 45. permanent magnets, 46. rear wheel supports are the locating dowel pin of two joint sleeve pipes up and down.47. last knock hole, 48. times knock holees.
Annotate: be about described herein with person for driving a car's seat direction.
Fig. 3 is the utility model rear wheel support semisectional view of two joint sleeve pipes up and down.
The following joint of 13. rear wheel supports saves on 14. rear wheel supports among the figure, the rotating shaft of 30. rear wheel supports and left side prosthomere pull bar, the rotating shaft of 31. rear wheel supports and right side prosthomere pull bar, 46 locating dowel pins, knock hole on 47., 48. times knock holees, 49. locating pin springs.
Fig. 4 is the front view and the birds-eye view of the utility model motor speed sensor structure.
41. porous discs among the figure, 42. grooved photoelectrical couplers.
Fig. 5 is the constructional drawing that the utility model adds the linear potentiometer of retracing spring.
50. keycaps among the figure, 51. springs, 52. linear slide potential devices.
Fig. 6 is the circuit diagram of the utility model electric machine controller.
J1.RS-232 serial ports among the figure, J2. outlet, J3. left side motor control signal interface, the right motor control signal interface of J4., J5. light driver interface, J6. mcu programming interface, U1.RS-232 serial ports conversion chip, U2.DC-DC conv, U3. micro controller system, P1. left steering CONTROLLED POTENTIAL device, P2. right steering CONTROLLED POTENTIAL device, P3. speed control potential device, P4. brake CONTROLLED POTENTIAL device, LCM is a LCDs, the B buzzer phone.
Fig. 7 is a DC motor driver circuit diagram of the present utility model.
J1. motor control signal interface among the figure, J2. motor-driven interface, J3. power interface, J4. motor speed sensor signaling interface.
The specific embodiment
As shown in Figure 1 and Figure 2, crawler body of the present utility model is made up of about two front-wheel (1), (2) and trailing wheels placed in the middle (3) side by side, and two front-wheels (1), (2) are installed in respectively on the output shaft of two motors (4), (5); Motor (4), (5) optional rotating speed are 500 to 800 rev/mins, DC machine, dc brushless motor or stepping motor that power is 50 to 100 watts, be equipped with two corresponding motor drivers simultaneously, but the motor driver shown in the DC machine figure 7, brushless motor can be joined the motor driver that the A3938 integrated circuit of being produced by U.S. AllegroMicroSystems company constitutes; Stepping motor can be joined the motor driver that the A3986 integrated circuit of being produced by U.S. AllegroMicroSystems company constitutes.About two motors (4), (5) be separately fixed at the bottom of left and right sides front-wheel support (6), (7), motor is two-way axle output, after be coupling motor speed sensor (43), (44), photoelectricity mechanism shown in Figure 4 is adopted in motor speed sensor (43), (44), and its output signal is connected on the motor speed sensor signaling interface J4 of corresponding motor driver (34), (35); When selecting dc brushless motor for use, can omit tachogen (43), (44), and directly the Hall element signal of dc brushless motor is connected on the motor speed sensor signaling interface J4 of corresponding motor driver (34), (35).The bottom of left and right sides front-wheel support (6), (7) interconnects fixing with crossbeam (8), crossbeam (8) is respectively installed a stretcher (9), (10) about going up, stretcher (9), (10) are grouped into by suspended portion and pedal position, connect with hinge (11), suspended portion is installed on the crossbeam (8) with bolt (12), foot-operated part can upwards fold, and folding back permanent magnet (45) is inhaled mutually with one of bolt of rear end plate (12), so just stretcher (9), (10) can be drawn in and fix; Rear wheel support is by two saving (14) and (13) formation up and down, last joint (14) is than joint (13) bore is little down, but indentation saves in (13) down, stretch out with the location of indentation and realize that by the locating dowel pin (46) that is installed in joint (14) and following joint (13) positioning hole corresponding (47), (48) its structure is seen Fig. 3.A trailing wheel capable of free rotation (3) is installed in the bottom of rear wheel support hypomere (13), as instrument go-cart castor; Joint (14) is equipped with handle (15) and electric machine controller (16) on the rear wheel support, and read-out, keyboard and headlight (40) are housed on the electric machine controller (16); Handle (15) is provided with control button (17), (18), (19), (20) turn to, adjust the speed of a motor vehicle and brake about control respectively, and turning to about of the present utility model is that the velocity contrast that off front wheel rotates that keeps left is realized; Brake is by motor braking; The middle part of left and right sides front-wheel support (6), (7) and the rear wheel support middle part of joint (13) down are connected with a rotating shaft (21), make left and right sides front-wheel support (6), (7) and rear wheel support down joint (13) can rotating shaft (21) be I shape for the center of circle is inwardly folding or outside expansion is X-shaped; Each connects a pull bar separately with a rotating shaft (22), (23) respectively for left and right sides front-wheel support (6), (7) inside top, and pull bar constitutes by two joints, i.e. prosthomere pull bar (28), (29) and deutomerite pull bar (24), (25); Each connects the centre of front and back joint pull bar with a rotating shaft (26), (27); The other end of prosthomere pull bar (28), (29) is connected respectively in the rotating shaft (30) and (31) of joint (13) under the rear wheel support.When launching like this, pull bar (24), (25), (28), (29) are stretching, make left and right sides front-wheel support (6), (7) spacing with rear wheel support hypomere (13), are X-shaped; And when folding, the central rotating shaft of pull bar (26), (27) move up, make pull bar (24), (25), (28), (29) with left and right sides front-wheel support (6), (7) and rear wheel support down joint (13) inwardly draw in and be I shape (rear wheel support go up joint (14) indentation down in the joint (13)) before this, then again with rotating shaft (22), (23), (30), (31) be the center of circle backward, fold downwards.Fix a vehicle seat (32) with bolt (33) above the two joint prosthomere connecting rods, vehicle seat is provided with concave groove below (32), the part of left and right sides deutomerite pull bar can be embedded wherein when car exhibition is opened, and plays firm vehicle frame; The vehicle seat back is to upper overturning, to strengthen the vehicle seat transverse strength; Motor driver (34), (35) are installed near on the left and right sides front-wheel support (6) of motor, (7); Storage battery (36) adopts poly-lithium battery, the poly-lithium battery of the 4900mAh that produces as Hangzhou Wan Ma company, and storage battery (36) can be placed in the crossbeam (8), or on the crossbeam (8).Adopt said structure, the utility model launches and is folding all very easy, rapidly, folding step is as follows: press locating dowel pin (46), joint (14) indentation rear wheel support on the rear wheel support is saved (13) down, upwards cocked from vehicle seat (32) back, left and right sides front-wheel support (6), (7) and rear wheel support hypomere (13) are drawn in, again connecting rod (24), (25), (28), (29) bending is downwards drawn in, at last with the folding folding process of just finishing car load of packing up of left and right sides stretcher; Expansion process inverse process when folding gets final product.Left and right sides front-wheel support (6), (7), rear wheel support two joint (14), (13), crossbeam (8), pull bar (24), (25), (28), (29) and handle (15) up and down can adopt aluminium alloy pipe; Engineering plastics can be adopted in vehicle seat (32), stretcher (9), (10); Air-inflation tyre when wheel can adopt 6-8.
As shown in Figure 3, joint (14) saves among (13) under the indentation rear wheel support on the rear wheel support of the present utility model, joint (14) lower end is provided with a locating dowel pin (46) on the rear wheel support, and outwards withstand by spring (49), the rear wheel support tube wall of joint (13) down respectively has a location (47), (48) hole up and down, and the aperture is slightly larger than the diameter of locating dowel pin (46).During expansion, joint (14) is upwards pulled out on the rear wheel support, and locating dowel pin (46) enters under the effect of spring (49) rear wheel support under in the knock hole (47) on joint (13) top, makes that to save (14) on the rear wheel support spacing; During contraction, press on the other hand another hand of positioning spring pin (46) and joint (14) on the rear wheel support can be pushed downwards rear wheel support under in the joint (13) in locating dowel pin (46) enters the knock hole (48) that saves (13) bottom rear wheel support under, make that to save (14) on the rear wheel support spacing.
As shown in Figure 4, motor speed sensor of the present utility model (43), (44), by porous disc (41) and grooved photoelectrical coupler (42) and dust boot formation, the hole count of porous disc (41) can be chosen according to range rate accuracy; Porous disc (41) is fixed on the motor rear output shaft, and grooved photoelectrical coupler (42) and dust boot are fixed on the motor back shell; The connection terminal of grooved photoelectrical coupler (42) links to each other with the motor speed sensor socket J4 of motor driver (34), (35), and the output signal by J4 grooved photoelectrical coupler (42) is connected to again on the I/O pin of micro controller system U3 of electric machine controller (16).
As shown in Figure 6, a slice singlechip chip U3 is arranged in the electric machine controller (16), model is C8051F410 (the I/O pin of this chip can pass through software arrangements with being connected of internal circuit), wherein 4 I/O pins respectively with about turn to CONTROLLED POTENTIAL device P1, P2, speed control potential device P3, brake CONTROLLED POTENTIAL device P4 to link to each other, the keycap of P1, P2, P3, P4 is corresponding with (17), (18), (19), (20) among Fig. 1, Fig. 2, P1, P2, P3, P4 can adopt the linear slide potential device that adds retracing spring, as shown in Figure 5; 4 I/O pins are set to the inside A/D circuit of analog input end and order sheet machine chip U3 during programming; Singlechip chip U3 also has 4 I/O pins to connect that left motor driver connects socket J3, other 4 I/O pins connect right motor driver and connect socket J4, is respectively two motor drivers (34), (35) provide control signal; The 3rd pin output pwm signal among J3, the J4 or impulse singla (when connecting stepping motor) are in order to regulate rotating speed of motor; The 6th pin of J3, J4 links to each other with the output signal end of motor speed sensor (43), (44), receives the output signal of motor speed sensor (43), (44), so that the rotating speed of motor (4), (5) is carried out closed loop control; 4 I/O pins of singlechip chip U3 connect light driver interface J5, can realize the control to left steering lamp (37), right steering lamp (38), stoplight stop lamp (39), headlight (40); The pin of singlechip chip U3 connects buzzer phone B, warning is provided, blows a whistle and the operation indicating sound; 5 pins of singlechip chip U3 connect the keyboards that button S1, S2, S3, S4, S5 constitute, and wherein 4 and light driver interface J5 are shared, and the function of electric machine controller (16) can be set by keyboard user; The I/O mouth of singlechip chip U3 connects the node of divider resistance R1 and R2, and the voltage of storage battery (36) is monitored, and this I/O pin is set to the inside A/D circuit of analog input end and order sheet machine chip U3 during programming, and this pin is also shared with button S5; Singlechip chip U3 also has 2 I/O pins to meet LCDs LCM, in order to show information such as the speed of a motor vehicle, mileage, time, battery electric quantity and function setting; The P0.4 of singlechip chip U3 links to each other with transmission, the reception pin of RS-232 serial port chip U1 respectively with the P0.5 pin, the model of U1 is SP3223, socket J1 by the RS-232 serial port chip, the user can make electric machine controller (16) link to each other with equipment such as notebook PC, remote control receiver, GPS receiver, ultrasonic radar, microcams, realizes additional functions such as program control, the remote control of car and automatic steerings.DC-DC DC converter U2 is the operating voltage of micro controller system and peripheral circuit thereof with the voltage transitions of storage battery (36).
As shown in Figure 7, DC motor driver control signal socket J1 is connected with the J3 or the J4 of electric machine controller (16), the 3rd pin of J1 connects pwm signal or impulse singla (when connecing stepping motor), the control motor speed, 4th, the 5th pin connects DC machine forward and backward control signal (being direction signal and brake signal when connecing dc brushless motor or stepping motor) respectively, and the 6th pin connects tachometer signal; P-channel field-effect transistor (PEFT) pipe among the figure and N channel field-effect pipe model are respectively FDS4141 and FDMC8462, and the model of comparator U1A is LM393, and resistance R 0 is the current protection sampling resistor, and J4 connects the connection terminal of motor speed sensor (43) or (44).
Claims (1)
1, a kind of Foldable electric car of forming by wheel, vehicle frame, motor, circuit for controlling motor and storage battery, it is characterized in that: the crawler body of this car is made up of about two front-wheel and trailing wheels placed in the middle side by side, two front-wheels are installed in respectively on the output shaft of two motors, two motors are separately fixed at the bottom of left and right sides front-wheel support again, and motor output shaft all assembles motor speed sensor; The bottom of left and right sides front-wheel support interconnects fixing with crossbeam, a stretcher respectively is installed about on the crossbeam, and stretcher is grouped into by suspended portion and pedal position, and the two connects with hinge, and suspended portion is installed on the crossbeam with bolt, and foot-operated part can upwards fold; Rear wheel support is made of two joint sleeve pipes up and down, but among the joint sleeve pipe, a trailing wheel capable of free rotation is installed in the rear wheel support bottom under the indentation of last joint, and joint is equipped with handle and electric machine controller on the rear wheel support, have read-out and keyboard on the electric machine controller, handle is provided with the control button; The middle part of left and right sides front-wheel support is connected with a rotating shaft at the middle part of joint down with rear wheel support; Connect a pull bar separately with a rotating shaft respectively in left and right sides front-wheel support inside top, pull bar constitutes by front and back two joints, and is middle respectively with a rotating shaft connection; The other end of left and right sides front tension bar is connected respectively in the left and right sides rotating shaft on joint top under the rear wheel support; Fix a vehicle seat above the front tension bar of the left and right sides, be provided with concave groove below the vehicle seat, the part of back stay can be embedded wherein when car exhibition is opened, the vehicle seat back is to upper overturning; Motor driver is installed on the front-wheel support of the left and right sides, and storage battery is installed in the crossbeam or on the crossbeam; A slice singlechip chip is arranged in the circuit for controlling motor, its pin respectively with about turn to CONTROLLED POTENTIAL device, speed control potential device, brake CONTROLLED POTENTIAL device, motor driver, motor speed sensor, light actuator, buzzer phone, read-out, keyboard, accumulator voltage detecting circuit and RS-232 interface chip transmission, receive pin and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920145114U CN201385733Y (en) | 2009-03-09 | 2009-03-09 | Foldable and portable electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920145114U CN201385733Y (en) | 2009-03-09 | 2009-03-09 | Foldable and portable electric motor car |
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| Publication Number | Publication Date |
|---|---|
| CN201385733Y true CN201385733Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920145114U Expired - Fee Related CN201385733Y (en) | 2009-03-09 | 2009-03-09 | Foldable and portable electric motor car |
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| Country | Link |
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| CN (1) | CN201385733Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490068A (en) * | 2011-11-29 | 2012-06-13 | 山东建筑大学 | Device for carrying machine tool spindles |
| WO2013093876A2 (en) * | 2011-12-21 | 2013-06-27 | Garay Patino Luis Alejandro | Collapsible, portable human-powered electric vehicle for one person |
| CN103857578A (en) * | 2011-10-13 | 2014-06-11 | 萱场工业株式会社 | Power-assisted carriage |
| CN105109604A (en) * | 2015-09-29 | 2015-12-02 | 太仓市车中宝休闲用品有限公司 | Tightened cloth saddle type three-wheel entertainment trolley |
| CN105216937A (en) * | 2015-09-29 | 2016-01-06 | 太仓市车中宝休闲用品有限公司 | Tighten cloth saddle type three-wheel scooter |
| CN105270449A (en) * | 2015-10-26 | 2016-01-27 | 沈明 | Article cart for factory |
| CN105683035A (en) * | 2013-11-04 | 2016-06-15 | 彼得奥普斯维克联合股份有限公司 | Combined scooter and handcart |
| CN106143747A (en) * | 2015-04-13 | 2016-11-23 | 天津灵燕工贸有限公司 | A kind of bicycle that can freely fold |
| CN110509973A (en) * | 2019-09-10 | 2019-11-29 | 赵海荣 | A kind of children trolley |
| CN114852024A (en) * | 2022-06-02 | 2022-08-05 | 陈天一 | Automatically controlled braking balancing pole adjusting device of cycle racing |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857578A (en) * | 2011-10-13 | 2014-06-11 | 萱场工业株式会社 | Power-assisted carriage |
| CN102490068A (en) * | 2011-11-29 | 2012-06-13 | 山东建筑大学 | Device for carrying machine tool spindles |
| WO2013093876A2 (en) * | 2011-12-21 | 2013-06-27 | Garay Patino Luis Alejandro | Collapsible, portable human-powered electric vehicle for one person |
| WO2013093876A3 (en) * | 2011-12-21 | 2013-10-17 | Garay Patino Luis Alejandro | Portable and collapsible human-powered electric vehicle for one person |
| CN105683035A (en) * | 2013-11-04 | 2016-06-15 | 彼得奥普斯维克联合股份有限公司 | Combined scooter and handcart |
| CN105683035B (en) * | 2013-11-04 | 2018-06-22 | 彼得奥普斯维克联合股份有限公司 | Knockdown scooter and trolley |
| CN106143747A (en) * | 2015-04-13 | 2016-11-23 | 天津灵燕工贸有限公司 | A kind of bicycle that can freely fold |
| CN105109604B (en) * | 2015-09-29 | 2017-11-03 | 太仓市车中宝休闲用品有限公司 | Tighten cloth saddle type three-wheel RV |
| CN105216937A (en) * | 2015-09-29 | 2016-01-06 | 太仓市车中宝休闲用品有限公司 | Tighten cloth saddle type three-wheel scooter |
| CN105109604A (en) * | 2015-09-29 | 2015-12-02 | 太仓市车中宝休闲用品有限公司 | Tightened cloth saddle type three-wheel entertainment trolley |
| CN105270449A (en) * | 2015-10-26 | 2016-01-27 | 沈明 | Article cart for factory |
| CN110509973A (en) * | 2019-09-10 | 2019-11-29 | 赵海荣 | A kind of children trolley |
| CN110509973B (en) * | 2019-09-10 | 2021-07-13 | 赵海荣 | Children's barrow |
| CN114852024A (en) * | 2022-06-02 | 2022-08-05 | 陈天一 | Automatically controlled braking balancing pole adjusting device of cycle racing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20130309 |