# US 2018/0022390 A1 · Child drift car

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- Number: US 2018/0022390 A1
- Document ID: US20180022390A1
- Status: Published application
- Kind: A1
- Application number: 15/541,301
- Filed: 2015-12-24
- Published: 2018-01-25
- Earliest claimed: 2015-01-06
- Assignees: Goodbaby Child Products Co., Ltd.
- Applicants: Goodbaby Child Products Co., Ltd.
- Inventors: Hui CAI; Guobao TONG
- Web page: https://patentgrep.com/patent/US20180022390A1

## CPC

- B60K 1/04: of the electric storage means for propulsion
- B60K 17/165: {provided between independent half axles (B60K17/18, B60K17/20 take precedence)}
- B60K 17/306: {with a universal joint in the axis of the steering knuckle}
- B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75)
- B62D 1/20: Connecting steering column to steering gear
- B62D 21/183: {specially adapted for sports vehicles, e.g. race, dune buggies, go-karts (tubular skeleton B62D23/005)}
- B62D 23/005: {with integrated chassis in the whole shell, e.g. meshwork, tubes, or the like (B62D33/044 takes precedence)}
- B62K 9/00: Children's cycles (toy vehicles A63H17/00)
- B60K 2001/0416: {Arrangement in the rear part of the vehicle}
- B60L 2200/20: Vehicles specially adapted for children, e.g. toy vehicles
- B60Y 2200/81: Toys
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)
- B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A child drift car comprises a car frame, a wheel assembly, a seat, a driving mechanism and a direction control mechanism; the wheel assembly comprises a driving wheel assembly, and the driving wheel assembly comprises driving wheels, and an axle fixedly connected to the driving wheels; the driving mechanism comprises a driver and a transmission device; the direction control mechanism comprises a steering column, a steering wheel fixedly connected to the steering column, and a steering device separately connected to the steering column and the driving wheel assembly; the driving mechanism further comprises a main shaft rotatably disposed on the car frame along its own axis and driven by the transmission device to rotate, and the main shaft is connected to the axle through a universal joint. When the driving wheels turn, the speed of the driving wheels is not affected, and a higher drifting speed can be achieved.

## Claims

### Claim 1

A child drift car, comprising a car frame, a wheel assembly arranged on the bottom of the car frame, a seat arranged on the car frame, a driving mechanism and a direction control mechanism; the wheel assembly comprising a driving wheel assembly and a rear wheel assembly, the driving wheel assembly comprising driving wheels and an axle which is fixedly connected to the driving wheels and about which the driving wheels rotates, the driving mechanism comprising a driver and a transmission device driven by the driver to move, the direction control mechanism comprising a steering column rotatably arranged on the front portion of the car frame, a steering wheel fixedly connected to the steering column, and a steering device separately connected to the steering column and the driving wheel assembly, wherein, the driving mechanism further comprises a main shaft rotatably arranged on the car frame about its own axis and driven by the transmission device to rotate, the main shaft is connected to the axle via a universal joint, the rear wheel assembly comprises rear wheels and a rotation shaft for connecting the rear wheels and the car frame, the rotation shaft is provided aslant with respect to the ground.

### Claim 2 (depends on 1)

The child drift car according to claim 1, wherein, the steering column comprises an upper rod and a lower rod which extend along a up-down direction, a lower end portion of the upper rod and an upper end portion of the lower rod are connected via a universal joint, an upper end portion of the upper rod is fixedly connected to the steering wheel, and a lower end portion of the lower rod is connected to the steering device.

### Claim 3 (depends on 1)

The child drift car according to claim 1, wherein, the steering device comprises a first connecting rod fixedly connected to the steering column and a second connecting rod rotatably connected to the first connecting rod, the driving wheel assembly further comprises a connector rotatably connected to the car frame, the axle is capable of rotatably passing through the connector, the connector is rotatably connected to the second connecting rod.

### Claim 4 (depends on 1)

The child drift car according to claim 1, wherein, the driver is a motor.

### Claim 5 (depends on 4)

The child drift car according to claim 4, wherein, the driving mechanism further comprises a foot switch arranged on the car frame for controlling the motor.

### Claim 6 (depends on 4)

The child drift car according to claim 4, wherein, the transmission device comprises a first gear fixedly arranged on an output shaft of the motor, a second gear connected to the main shaft, and a chain for connecting the first gear and the second gear in a transmission manner.

### Claim 7 (depends on 1)

The child drift car according to claim 1, wherein, there are two sets of driving wheel assemblies which are located at the left side and the right side of the bottom of the car frame, respectively.

### Claim 8 (depends on 7)

The child drift car according to claim 7, wherein, there are two main shafts which both extend along a left-right direction of the car frame, the driving mechanism further comprises a differential mechanism connected to the transmission device and driven by the transmission device to rotate, an end of each of the two main shafts is connected to the differential mechanism, and the other ends of the two main shafts are connected to the axles of the two driving assemblies via the universal joints, respectively.

### Claim 9 (depends on 1)

The child drift car according to claim 1, wherein, the rear wheel comprises a rear wheel base of which a top portion is rotatably connected to a lower end portion of the rotation shaft, a rear wheel axle which is located inside the rear wheel base and of which two end portions are rotatably connected to two sidewalls of the rear wheel base respectively, and a rear wheel body fixedly sleeved over the rear wheel axle.

### Claim 10 (depends on 1)

The child drift car according to claim 1, wherein, there are two sets of driving wheel assemblies which are located in the front of the bottom of the car frame, and there are two sets of rear wheel assemblies which are located in the rear of the bottom of the car frame.