Children's ride-on vehicles having ground detection systems

• US 7,938,218 B2
• Filed: 08/31/2009
• Issued: 05/10/2011
• Est. Priority Date: 07/13/2006
• Status: Active Grant

• Current Assignee: Mattel Incorporated
• Original Assignee: Mattel Incorporated
• Inventors: Zirnheld, Richard A., Reynolds, Jeffrey W., Sitarski, Gerald P., Rhein, John, Howell, William R.
• Primary Examiner(s): Boehler; Anne Marie M
• Application Number:
  US12/550,957
• Publication Number:
  US 20090321168A1
• Time in Patent Office: 617 Days
• Field of Search: 180/197, 180282-285, 180/65.5, 180/65.6, 180/65.8, 180/907, 180/908, 701/22, 701/82, 446/434, 446/441, 446/457, 446/466, 446/468, 200/61.44
• US Class Current: 180/197
• CPC Class Codes: B60G 17/016 characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input B60G17/017 takes precedence
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 2202/12 Wound spring
• CPC Class Codes: B60G 2206/122 the arm having L-shape
• CPC Class Codes: B60G 2300/20 Toys
• CPC Class Codes: B60G 2300/26 Carts
• CPC Class Codes: B60G 2400/82 Ground surface
• CPC Class Codes: B60G 2401/20 Switches, e.g. mercury or ball type switches
• CPC Class Codes: B60G 2600/07 Inhibiting means
• CPC Class Codes: B60G 2600/18 Automatic control means
• CPC Class Codes: B60G 3/01 the wheel being mounted for sliding movement, e.g. in or on a vertical guide camber maintaining means B60G3/26
• CPC Class Codes: B60L 2200/20 Vehicles specially adapted for children, e.g. toy vehicles
• CPC Class Codes: B60L 3/00 Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B62K 2204/00 Adaptations for driving cycles by electric motor for driving electrically assisted bicycles B62M6/00
• CPC Class Codes: B62K 9/00 Children's cycles toy vehicles A63H17/00
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Abstract

Children'"'"'s ride-on vehicles having a drive assembly that is selectively configured between a plurality of drive configurations, such as responsive to user inputs via user input devices, and a ground detection system that is adapted to detect when at least one of a plurality of wheels loses contact with the ground surface. The ground detection system may be adapted to restrict the plurality of drive configurations responsive thereto. This restriction may be automatic responsive to loss of contact of the at least one of the plurality of wheels with the ground surface, and it may be made regardless, or independent, of user inputs that otherwise would select and/or enable one of the restricted drive configurations.

Claims

1. A children'"'"'s ride-on vehicle, comprising:

a body having a seat sized for a child;

a plurality of wheels rotatably coupled to the body and adapted to contact a ground surface, wherein at least one of the plurality of wheels is a sensed wheel;

a steering assembly comprising a steering mechanism adapted to receive steering inputs from a child sitting on the seat, and a steering linkage adapted to convey the steering inputs to at least one of the plurality of wheels; and

a drive assembly adapted to selectively drive the rotation of at least one of the plurality of wheels in a plurality of drive configurations, wherein the plurality of drive configurations includes at least a high-speed drive configuration and a low-speed drive configuration, wherein the drive assembly comprises;

a motor assembly comprising an electric motor;

a user input device positioned to receive inputs from a child sitting on the seat and adapted to selectively actuate the motor assembly;

a battery assembly including a battery adapted to selectively energize the motor assembly; and

a ground detection system in communication with the sensed wheel and adapted to detect when the sensed wheel loses contact with the ground surface, wherein the drive assembly is adapted to restrict driving to the low-speed drive configuration when the ground detection system detects loss of contact of the sensed wheel with the ground surface.

2. The children'"'"'s ride-on vehicle of claim 1, wherein the user input device is adapted to receive user inputs selecting amongst the plurality of drive configurations.

3. The children'"'"'s ride-on vehicle of claim 2, wherein the drive assembly is adapted to restrict the plurality of drive configurations when the ground detection system detects loss of contact of the sensed wheel with the ground surface regardless of a user input selecting the high-speed drive configuration.

4. The children'"'"'s ride-on vehicle of claim 1, wherein the drive assembly is adapted to be selectively configured within any of the plurality of drive configurations when the ground detection system does not detect loss of contact of the sensed wheel with the ground surface.

5. The children'"'"'s ride-on vehicle of claim 1, wherein the sensed wheel is a first sensed wheel and the plurality of wheels includes a second sensed wheel, and wherein the ground detection system is adapted to detect when at least one of the first sensed wheel and the second sensed wheel loses contact with the ground surface.

6. The children'"'"'s ride-on vehicle of claim 5, wherein the steering linkage is adapted to convey the steering inputs to the first sensed wheel and the second sensed wheel.

7. The children'"'"'s ride-on vehicle of claim 5, wherein the drive assembly is adapted to selectively drive the rotation of the first sensed wheel and the second sensed wheel in the plurality of drive configurations.

8. The children'"'"'s ride-on vehicle of claim 5, wherein the drive assembly is adapted to restrict driving to the low-speed drive configuration when the ground detection system detects loss of contact of both the first sensed wheel and the second sensed wheel with the ground surface.

9. The children'"'"'s ride-on vehicle of claim 8, wherein the drive assembly is adapted to selectively drive rotation of the first sensed wheel and the second sensed wheel.

10. The children'"'"'s ride-on vehicle of claim 1, wherein the ground detection system includes a switch adapted to be selectively configured between a first position and a second position, and further wherein the ground detection system is adapted to selectively configure the switch from the first position to the second position responsive to the sensed wheel losing contact with the ground surface.

11. The children'"'"'s ride-on vehicle of claim 10, wherein when the switch is in the first position, the drive assembly is configured to drive the rotation of at least one of the plurality of wheels in any of the plurality of drive configurations, and wherein when the switch is in the second position, the drive assembly is configured to restrict driving to the low-speed drive configuration.

12. The children'"'"'s ride-on vehicle of claim 11, wherein the drive assembly is adapted to automatically configure the switch to the second position responsive to loss of contact of the sensed wheel with the ground surface.

13. The children'"'"'s ride-on vehicle of claim 12, wherein the switch is biased to automatically return to the first position when the sensed wheel contacts the ground surface.

14. The children'"'"'s ride-on vehicle of claim 10, wherein the switch is adapted to complete a circuit when in the second position.

15. The children'"'"'s ride-on vehicle of claim 10, wherein the switch is adapted to open a circuit when in the second position.

16. The children'"'"'s ride-on vehicle of claim 10, further comprising a spindle that couples the sensed wheel to the body, wherein the spindle includes an end portion that rotatingly supports the sensed wheel, and wherein the spindle is configured to move between a retracted position and an extended position, in which the end portion is spaced from the body relative to the retracted position.

17. The children'"'"'s ride-on vehicle of claim 16, further comprising a bias assembly adapted to urge the spindle toward the extended position.

18. The children'"'"'s ride-on vehicle of claim 1, wherein the steering linkage is adapted to convey the steering inputs to the sensed wheel.

19. The children'"'"'s ride-on vehicle of claim 1, wherein the ground detection system is operatively connected to the sensed wheel.

20. A children'"'"'s ride-on vehicle comprising:

a body having a seat sized for a child;

a plurality of wheels rotatably coupled to the body and adapted to contact a ground surface, wherein at least one of the plurality of wheels is a sensed wheel;

a steering assembly comprising a steering mechanism adapted to receive steering inputs from a child sitting on the seat, and a steering linkage adapted to convey the steering inputs to at least one of the plurality of wheels; and

a drive assembly adapted to selectively drive the rotation of at least one of the plurality of wheels in a plurality of drive configurations, wherein the drive assembly comprises;

a motor assembly comprising an electric motor;

a user input device positioned to receive inputs from a child sitting on the seat and adapted to selectively actuate the motor assembly;

a battery assembly including a battery adapted to selectively energize the motor assembly; and

a ground detection system in communication with the sensed wheel and adapted to detect when the sensed wheel loses contact with the ground surface, wherein the drive assembly is adapted to restrict driving to a subset of the plurality of drive configurations when the ground detection system detects loss of contact of the sensed wheel with the ground surface, and wherein the plurality of drive configurations includes at least one drive configuration that is not in the subset of the plurality of drive configurations, wherein the ground detection system includes a switch adapted to be selectively configured between a first position and a second position, and further wherein the ground detection system is adapted to selectively configure the switch from the first position to the second position responsive to the sensed wheel losing contact with the ground surface;

a spindle that couples the sensed wheel to the body, wherein the spindle includes an end portion that rotatingly supports the sensed wheel, and wherein the spindle is configured to move between a retracted position and an extended position, in which the end portion is spaced from the body relative to the retracted position; and

a bias assembly adapted to urge the spindle toward the extended position;

wherein the spindle is operatively connected to the switch such that the switch is in the first position when the spindle is in the retracted position, and the switch is in the second position when the spindle is in the extended position.

21. The children'"'"'s ride-on vehicle of claim 20, wherein the plurality of drive configurations includes a high-speed configuration and a low-speed configuration, and wherein the subset of the plurality of drive configurations includes the low-speed configuration and does not include the high-speed configuration.

22. A children'"'"'s ride-on vehicle, comprising:

a body having a seat sized for a child;

a plurality of wheels rotatably coupled to the body and adapted to contact a ground surface, wherein at least one of the plurality of wheels is a sensed wheel;

a steering assembly comprising a steering mechanism adapted to receive steering inputs from a child sitting on the seat, and a steering linkage adapted to convey the steering inputs to at least one of the plurality of wheels; and

a drive assembly adapted to selectively drive the rotation of the sensed wheel in a plurality of drive configurations, wherein the drive assembly comprises;

a motor assembly comprising an electric motor;

a user input device positioned to receive inputs from a child sitting on the seat and adapted to selectively actuate the motor assembly;

a battery assembly including a battery adapted to selectively energize the motor assembly; and

a ground detection system in communication with the sensed wheel and adapted to detect when the sensed wheel loses contact with the ground surface, wherein the drive assembly is adapted to restrict driving to a subset of the plurality of drive configurations when the ground detection system detects loss of contact of the sensed wheel with the ground surface, and wherein the plurality of drive configurations includes at least one drive configuration that is not in the subset of the plurality of drive configurations.

23. The children'"'"'s ride-on vehicle of claim 22, wherein the plurality of drive configurations and the subset of the plurality of drive configurations include a de-energized configuration in which the motor assembly is restricted from being actuated by the user input device.

24. The children'"'"'s ride-on vehicle of claim 23, wherein the plurality of drive configurations further includes an energized configuration in which the motor assembly is configured to be actuated by the user input device, and wherein the subset of the plurality of drive configurations does not include the energized configuration.