US20060009119A1 - Toy vehicle with stabilized front wheel - Google Patents
Toy vehicle with stabilized front wheel Download PDFInfo
- Publication number
- US20060009119A1 US20060009119A1 US11/085,341 US8534105A US2006009119A1 US 20060009119 A1 US20060009119 A1 US 20060009119A1 US 8534105 A US8534105 A US 8534105A US 2006009119 A1 US2006009119 A1 US 2006009119A1
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- United States
- Prior art keywords
- toy vehicle
- motor
- flywheel
- chassis
- front 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.)
- Abandoned
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
- A63H17/26—Details; Accessories
- A63H17/262—Chassis; Wheel mountings; Wheels; Axles; Suspensions; Fitting body portions to chassis
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
- A63H17/16—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor in the form of a bicycle, with or without riders thereon
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H29/00—Drive mechanisms for toys in general
- A63H29/20—Flywheel driving mechanisms
Definitions
- the present invention relates generally to a toy vehicle, and more particularly, to a toy vehicle with a stabilized front wheel.
- Toy vehicles and in particular toy motorcycles are generally known in the art.
- Toy motorcycles typically include a chassis supported along a longitudinal axis by front and rear wheels. Because a toy motorcycle must balance upon those two wheels, wind and other external forces can easily cause the toy motorcycle to fall over. For example, when a toy motorcycle is in motion, bumps in the terrain can cause the motorcycle to become off balance. Without the use of any stabilization system, toy motorcycles, and especially remotely controlled toy motorcycles, are difficult to operate and likely to fall over.
- the stability of the motorcycle can be enhanced by utilizing a four-bar linkage steering mechanism as described and claimed in U.S. Pat. No. 6,095,891 (“the '891 patent”), issued to Hoeting et. al. and entitled “Remote Control Toy with Improved Stability.”
- the four-bar linkage projects a castering axis ahead of the front wheel to help stabilize the toy motorcycle, especially over rough terrain.
- Gyroscopic flywheels can also enhance the stability of the toy wheels.
- the '891 patent discloses a weighted flywheel assembly housed within and operatively associated with the rear wheel of the toy vehicle.
- a propulsion drive is operatively coupled to both the rear wheel and the flywheel assembly, and drivingly rotates both the rear wheel and the flywheel assembly.
- the flywheel assembly rotates substantially faster than the rear wheel thereby causing a gyroscopic effect that tends to prevent the toy vehicle from falling over.
- the present invention provides a toy vehicle with a flywheel operatively associated with a front wheel.
- the toy vehicle comprises a chassis having a front end supported by the front wheel and a rear end supported by a rear wheel.
- a motor is operatively connected to the flywheel to rotate the flywheel and generate a gyroscopic effect while the toy vehicle is moving.
- the flywheel of the present invention is adapted to rotate independently of the front wheel.
- the front wheel may be adapted to freely rotate about an axle that is fixedly attached to the front end of the chassis.
- the motor may be positioned in a motor mount that is fixedly connected to the axle such that the motor does not rotate about the axle. Accordingly, the front wheel rotates about the axle whenever the toy vehicle is in motion whereas the flywheel rotates about the axle whenever the motor is energized.
- FIG. 1 is a side view, partially cut away, of a toy motorcycle in accordance with the present invention
- FIG. 2 is a side view similar to FIG. 1 showing internal components of the toy motorcycle;
- FIG. 3 is a top view of the toy motorcycle in FIG. 1 showing the operation of the steering servo;
- FIGS. 4A and 4B are exploded perspective views of the front wheel of the toy motorcycle shown in FIG. 1 ;
- FIG. 5 is an exploded perspective view similar to FIG. 4A showing an alternate flywheel design
- FIG. 6 is a cross-section view of the front wheel of the toy motorcycle shown in FIG. 1 ;
- FIG. 7 is a cross-section view similar to FIG. 6 showing an alternate front fork design.
- a toy vehicle 10 is shown according to the present invention.
- the toy vehicle 10 is a toy motorcycle, and in particular, a remote-controlled toy motorcycle.
- the toy vehicle 10 includes a chassis 12 that has front and rear ends 14 , 16 , a front fork 18 operatively connected to the front end 14 , and a rear suspension 20 operatively connected to the rear end 16 .
- the front fork 18 is supported by a front wheel 24 that is adapted to steer the toy vehicle 10 in a desired direction.
- the rear suspension 20 is supported by a rear wheel 26 .
- a flywheel assembly 28 is operatively associated with the front wheel 24 to stabilize the toy vehicle 10 when the toy vehicle is moving. The flywheel assembly 28 will be explained in greater detail below.
- the chassis 12 includes a decorative shell or casing 30 that covers the internal components of the toy vehicle 10 and defines the general shape of the chassis 12 .
- the components of an actual motorcycle may be depicted graphically on the shell 30 to increase the aesthetic value and consumer appeal of the toy motorcycle 10 .
- an engine 34 , transmission assembly 36 , drive chain 38 , and body frame 40 are all depicted graphically on shell 30 in FIG. 1 , even though none of those features are functional.
- the toy vehicle 10 may also include a simulated rider (not shown) sitting upon the chassis 12 and gripping handlebars 42 which are attached to the front end 14 .
- body extensions 48 may extend outwardly from shell 30 .
- the body extensions 48 are adapted to provide support for the chassis 12 when the toy vehicle 10 is on its side such that the rear wheel 26 remains in contact with the ground. Accordingly, the toy vehicle 10 can, in most situations, right itself when it is lying on its side without intervention from the operator. That is, upon application of drive power to the rear wheel 26 , the toy vehicle 10 begins to spin in an arcuate path until the vehicle becomes upright and is able to operate on both its front and rear wheels 24 , 26 .
- This self-righting characteristic is attractive to the operator of the toy vehicle 10 because the operator does not have to walk over to where the toy vehicle 10 is on its side. Normally, the application of power to the rear wheel 26 is all that is required to get the toy vehicle 10 back into operation.
- the chassis 12 supports numerous internal components, such as a propulsion drive 54 and a steering drive 56 , that are enclosed or covered by the shell 30 . More specifically, the chassis 12 supports a power supply 58 , a rear drive motor 60 , and a steering servo 62 , which are all electrically coupled to a control board 64 that is supported on the chassis 12 as well.
- the control board 64 may also be electrically coupled to a receiver 66 located in the chassis 12 for receiving radio signals from a remotely-located radio transmitter (not shown). The radio signals may be received by an external antenna 67 that is positioned on the chassis 12 and coupled to the receiver 66 .
- a gear drive assembly 68 connects the rear drive motor 60 to the rear wheel 26 .
- the rear drive motor 60 transmits power through the gear drive assembly 68 , which in turn rotates the rear wheel 26 to propel the toy vehicle 10 forward.
- the gear drive assembly 68 may be replaced with a drive belt system, a chain drive, or some other means that drivingly couples the propulsion drive 54 to the rear wheel 26 .
- the steering drive 56 is operatively connected to the front fork 18 , which includes substantially parallel first and second members 76 , 78 ( FIGS. 4A and 4B ) spaced about the front wheel 24 .
- the first and second members 76 , 78 are both connected to one or more fork couplers 80 , which in turn are pivotally connected to the front end 14 of the chassis 12 by a pivot pin 82 .
- the front fork 18 pivots about an axis 84 .
- the axis 84 may also be referred to as a castering axis 84 for reasons discussed in more detail below.
- the steering drive 56 includes the steering servo 62 and a steering arm 90 , which is pivotally connected to the steering servo 62 at pivot point 92 .
- a link 94 is connected between steering arm 90 and flange 98 , which is fixedly coupled to the second member 78 of the front fork 18 .
- the steering servo 62 generates steering outputs that move the steering arm 90 , which in turn moves link 94 either backwards or forwards depending on the desired direction for the toy vehicle 10 .
- link 94 when link 94 moves, the front fork 18 pivots about castering axis 84 such that the toy vehicle 10 will turn either left or right relative to longitudinal axis 102 .
- the link 94 may be pivotally connected to the fork coupler 80 or directly to a portion of the front fork 18 .
- the front wheel 24 comprises an outer tire 112 that surrounds first and second wheel halves 114 , 116 .
- the wheel halves 114 , 116 are supported on a front axle 118 and may be held together by screws 119 that extend through bores 120 in the first wheel half 114 and into threaded bores 122 ( FIG. 6 ) in the second wheel half 116 .
- the bores 120 and 122 are positioned around the periphery of the respective first and second wheel halves 114 , 116 such that the wheel halves 114 , 116 may be assembled around the flywheel assembly 28 .
- the flywheel assembly 28 may be encased between the wheel halves 114 , 116 and housed within the front wheel 24 .
- the flywheel assembly 28 includes a weighted flywheel 130 , a flywheel plate 132 , and a motor 134 .
- the weighted flywheel 130 may be coupled to the flywheel plate 132 by screws 136 that extend through bores 138 in the flywheel plate 132 and anchor into corresponding threaded bores 140 ( FIG. 6 ) on the flywheel 130 .
- the flywheel plate 132 is driven by the motor 134 , which is positioned within a motor mount 144 .
- the flywheel plate 132 and flywheel 130 are adapted to rotate within the front wheel 24 to create a gyroscopic effect.
- the flywheel plate 132 is adapted to rotate about the front axle 118 , which is fixably attached to the first and second members 74 , 78 of front fork 18 .
- the motor mount 144 is operatively connected to the fixed front axle 118 such that it does not rotate about the axle 118 .
- a hexagonal portion 145 of the front axle 118 may cooperate with a hexagonal bore 146 in motor mount 144 to prevent motor mount 144 from rotating about the axle 118 .
- Wires 148 electrically couple the motor 134 to the power supply 58 of toy vehicle 10 . As discussed below, the wires 148 may be routed through hollow cavities in the front axle 118 and front fork 18 .
- the motor 134 is drivingly coupled to the flywheel plate 132 by a belt drive system 150 .
- the belt drive system 150 includes a pulley 152 coupled to the flywheel plate 132 and a pulley 154 connected to the motor 134 .
- a belt 156 connects pulley 152 to pulley 154 such that when the motor 134 is energized, the flywheel plate 132 and weighted flywheel 130 spin about the front axle 118 .
- FIG. 5 shows an alternate configuration of the flywheel assembly 28 .
- the pulley 152 of FIGS. 4A and 4B is replaced with a gear 162 .
- the pulley 154 of FIGS. 4A and 4B is replaced with a gear 164 .
- the gears 162 and 164 are sized such that they engage one another and the belt 156 in FIGS. 4A and 4B is eliminated. In other words, when motor 134 is energized, gear 164 drives gear 162 to rotate the flywheel plate 132 and weighted flywheel 130 .
- FIG. 6 shows the fully assembled front wheel 24 and flywheel assembly 28 .
- the wires 148 may be advantageously routed through hollow cavities 168 and 170 in the front fork 18 and front axle 118 , respectively. Such an arrangement prevents the wires 148 from interfering with the rotation of the front wheel 24 or flywheel 130 .
- the first member 76 may include a hollow cavity as well.
- the hollow cavity 170 in the front axle 118 would extend substantially across the entire length of the axle 118 to allow wires to be routed through both the first and second members 76 , 78 before being coupled to the motor 134 .
- the wires 148 could be routed on the outside of the front fork 18 and enter the hollow cavity 170 through the end of axle 118 .
- first and second members 76 , 78 of front fork 18 may be adapted to conduct electricity.
- first and second members 76 , 78 form part of the electrical circuit which provides current to the motor 134 .
- This arrangement eliminates the need to route wires through hollow cavities in the front fork 18 .
- a first set of wires 174 may be used to operatively connect the power supply 58 to a first end 18 a of front fork 18
- a second set of wires 176 may be used to operatively connect a second end 18 b of front fork 18 to the motor 134 .
- the first and second sets of wires 174 , 176 are each comprised of a positive wire 180 and a negative wire 182 .
- the first and second members 76 , 78 are comprised of respective upper shock bodies 184 , 186 and lower shock shafts 188 , 190 .
- the positive and negative wires 180 , 182 are electrically coupled to metal plates 192 located in the shock bodies 184 and 186 .
- the plates 192 transfer any current to springs 194 , which in turn transfer current to lower shock shafts 188 and 190 .
- Current may also be transferred through these components in the opposite direction. Accordingly, such an arrangement allows current to flow from the power supply 58 to the motor 134 via the negative wire 182 and second member 78 , and back to the power supply 58 via the positive wire 180 and first member 76 .
- both the positive and negative wires 180 , 182 at the first end 18 a of front fork 18 may be routed through the pivot pin 82 .
- the user places a switch 200 in an “on” position to send power from the power supply 58 to the control board 64 .
- the power supply 58 may be any suitable power source, such as rechargeable batteries.
- the control board 64 may then energize the motor 134 via the wires 148 . Because the front axle 118 is fixedly connected to the front fork 18 and the motor mount 144 is secured to the front axle 118 , the motor 134 does not rotate about the front axle 118 when activated. Instead, the motor 134 drives pulley 154 , which in turn drives belt 156 and pulley 152 in order to rotate the flywheel plate 132 about the front axle 118 . As discussed below, the rotation of the flywheel 130 with the flywheel plate 132 increases the stability of the toy vehicle 10 by creating a gyroscopic effect when the toy vehicle 10 is in motion.
- the forward movement of the toy vehicle 10 is controlled by the rear drive motor 60 , which may be any suitable lightweight motor but typically is a battery powered DC motor or a lightweight internal combustion engine.
- the rear drive motor 60 When the rear drive motor 60 is activated, the rear wheel 26 propels the toy vehicle 10 forward and the front wheel 24 freely rotates about the front axle 118 .
- the flywheel assembly 28 Because the flywheel assembly 28 is not coupled to the wheel halves 114 , 116 and tire 112 , the flywheel 130 and front wheel 24 rotate independently of each other.
- the rotational speed of the flywheel 130 is determined by type of motor 134 , along with the sizes of the belt 156 and pulleys 152 , 154 (or gears 162 , 164 ) being used.
- flywheel 130 may be chosen in a manner that enables the flywheel 130 to rotate substantially faster than the front wheel 24 during normal operation of the toy vehicle 10 .
- This rotation of the flywheel 130 creates a gyroscopic effect that helps make the toy vehicle 10 less likely to fall over because of wind or other external forces, including rough terrain. For example, when the toy vehicle 10 encounters a bump along its path of motion, the gyroscopic effect helps keep the vehicle upright and maintain its current path of travel.
- the toy vehicle 10 travels on a surface 210 and the castering axis 84 projects ahead of where the front wheel 24 contacts the surface 210 .
- Such an arrangement provides a positive caster with a trail 220 , which represents the distance between where the castering axis 84 intersects the travel surface 210 and the contact point of the front wheel 24 with the travel surface 210 .
- the castering axis 84 effectively pulls the front wheel 24 along the toy vehicle's path of motion.
- this castering effect or force tends to realign the front wheel 24 with the toy vehicle's path of motion when the front wheel 24 deviates therefrom due to rough terrain or the like.
- the toy vehicle 10 could function without the assistance of an operator, it is contemplated that an operator will remotely control the toy vehicle 10 by means of a radio transmitter.
- a radio transmitter For example, to initiate forward motion, the operator sends a propulsion signal which is received by receiver 66 . The propulsion signal is then transmitted to the control board 64 , which energizes rear drive motor 60 . Accordingly, the forward motion of the toy vehicle 10 may be controlled by the operator sending an appropriate propulsion signal to the toy vehicle 10 .
- steering signals may also be transmitted by the operator to control the operation of the steering servo 62 .
- the operator can remotely and independently control both the forward motion and direction of the toy vehicle 10 .
- the motor 134 may be controlled with or without use of the remote radio transmitter.
- the toy vehicle 10 may be adapted such that the motor 134 is activated whenever the switch 200 is placed in the “on” position.
- the motor 134 operates independently of the two-channel transmitter and rotates the flywheel 130 about the front axle 118 , even when the toy vehicle 10 is not in motion.
- the motor 134 may be operatively connected to the receiver 66 such that the motor 134 becomes operative when the receiver 66 receives a propulsion signal.
- the control board 64 may have a timing mechanism adapted to deactivate the motor 134 after a predetermined time period of inactivity by the propulsion drive 54 . Such an arrangement helps prolong the operable life of power supply 58 as well.
Abstract
A toy vehicle with a flywheel operatively associated with a front wheel. The toy vehicle comprises a chassis having a front end supported by the front wheel and a rear end supported by a rear wheel. A motor is operatively connected to the flywheel to rotate the flywheel and generate a gyroscopic effect while the toy vehicle is moving. The flywheel is adapted to rotate independently of the front wheel. Accordingly, the front wheel rotates about the axle whenever the toy vehicle is in motion whereas the flywheel rotates about a front axle whenever the motor is energized. The motion of the toy vehicle may be controlled by a propulsion drive operatively associated with the chassis and drivingly coupled to the rear wheel. The direction of the toy vehicle may be controlled by a steering drive.
Description
- This application claims the benefit of and priority to prior filed co-pending U.S. Provisional Patent Application Ser. No. 60/586,561 to Hoeting et al., filed Jul. 9, 2004, entitled “Toy Vehicle with Stabilized Front Wheel,” having Attorney Docket No. BGZ-32, which is hereby incorporated by reference herein in its entirety.
- The present invention relates generally to a toy vehicle, and more particularly, to a toy vehicle with a stabilized front wheel.
- Toy vehicles, and in particular toy motorcycles are generally known in the art. Toy motorcycles typically include a chassis supported along a longitudinal axis by front and rear wheels. Because a toy motorcycle must balance upon those two wheels, wind and other external forces can easily cause the toy motorcycle to fall over. For example, when a toy motorcycle is in motion, bumps in the terrain can cause the motorcycle to become off balance. Without the use of any stabilization system, toy motorcycles, and especially remotely controlled toy motorcycles, are difficult to operate and likely to fall over.
- Several approaches have been tried to enhance a toy motorcycle's stability. For example, the stability of the motorcycle can be enhanced by utilizing a four-bar linkage steering mechanism as described and claimed in U.S. Pat. No. 6,095,891 (“the '891 patent”), issued to Hoeting et. al. and entitled “Remote Control Toy with Improved Stability.” The four-bar linkage projects a castering axis ahead of the front wheel to help stabilize the toy motorcycle, especially over rough terrain.
- Gyroscopic flywheels can also enhance the stability of the toy wheels. For example, the '891 patent discloses a weighted flywheel assembly housed within and operatively associated with the rear wheel of the toy vehicle. A propulsion drive is operatively coupled to both the rear wheel and the flywheel assembly, and drivingly rotates both the rear wheel and the flywheel assembly. During operation, the flywheel assembly rotates substantially faster than the rear wheel thereby causing a gyroscopic effect that tends to prevent the toy vehicle from falling over.
- While the stabilization approaches discussed above improve the stability of toy motorcycles, Applicants believe that stabilization can be achieved via other approaches as well.
- The present invention provides a toy vehicle with a flywheel operatively associated with a front wheel. The toy vehicle comprises a chassis having a front end supported by the front wheel and a rear end supported by a rear wheel. A motor is operatively connected to the flywheel to rotate the flywheel and generate a gyroscopic effect while the toy vehicle is moving.
- The flywheel of the present invention is adapted to rotate independently of the front wheel. For example, the front wheel may be adapted to freely rotate about an axle that is fixedly attached to the front end of the chassis. The motor may be positioned in a motor mount that is fixedly connected to the axle such that the motor does not rotate about the axle. Accordingly, the front wheel rotates about the axle whenever the toy vehicle is in motion whereas the flywheel rotates about the axle whenever the motor is energized.
- The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description given below, serve to explain the invention.
-
FIG. 1 is a side view, partially cut away, of a toy motorcycle in accordance with the present invention; -
FIG. 2 is a side view similar toFIG. 1 showing internal components of the toy motorcycle; -
FIG. 3 is a top view of the toy motorcycle inFIG. 1 showing the operation of the steering servo; -
FIGS. 4A and 4B are exploded perspective views of the front wheel of the toy motorcycle shown inFIG. 1 ; -
FIG. 5 is an exploded perspective view similar toFIG. 4A showing an alternate flywheel design; -
FIG. 6 is a cross-section view of the front wheel of the toy motorcycle shown inFIG. 1 ; and -
FIG. 7 is a cross-section view similar toFIG. 6 showing an alternate front fork design. - With reference to
FIGS. 1 and 2 , a toy vehicle 10 is shown according to the present invention. As illustrated and described herein, the toy vehicle 10 is a toy motorcycle, and in particular, a remote-controlled toy motorcycle. The toy vehicle 10 includes achassis 12 that has front andrear ends front fork 18 operatively connected to thefront end 14, and arear suspension 20 operatively connected to therear end 16. Thefront fork 18 is supported by afront wheel 24 that is adapted to steer the toy vehicle 10 in a desired direction. Therear suspension 20 is supported by arear wheel 26. Aflywheel assembly 28 is operatively associated with thefront wheel 24 to stabilize the toy vehicle 10 when the toy vehicle is moving. Theflywheel assembly 28 will be explained in greater detail below. - As shown in
FIG. 1 , thechassis 12 includes a decorative shell orcasing 30 that covers the internal components of the toy vehicle 10 and defines the general shape of thechassis 12. The components of an actual motorcycle may be depicted graphically on theshell 30 to increase the aesthetic value and consumer appeal of the toy motorcycle 10. For example, anengine 34,transmission assembly 36,drive chain 38, andbody frame 40 are all depicted graphically onshell 30 inFIG. 1 , even though none of those features are functional. The toy vehicle 10 may also include a simulated rider (not shown) sitting upon thechassis 12 and grippinghandlebars 42 which are attached to thefront end 14. - To increase the operability of the toy vehicle 10,
body extensions 48, such as foot pads, may extend outwardly fromshell 30. Thebody extensions 48 are adapted to provide support for thechassis 12 when the toy vehicle 10 is on its side such that therear wheel 26 remains in contact with the ground. Accordingly, the toy vehicle 10 can, in most situations, right itself when it is lying on its side without intervention from the operator. That is, upon application of drive power to therear wheel 26, the toy vehicle 10 begins to spin in an arcuate path until the vehicle becomes upright and is able to operate on both its front andrear wheels rear wheel 26 is all that is required to get the toy vehicle 10 back into operation. - As shown in
FIG. 2 , thechassis 12 supports numerous internal components, such as apropulsion drive 54 and asteering drive 56, that are enclosed or covered by theshell 30. More specifically, thechassis 12 supports apower supply 58, arear drive motor 60, and asteering servo 62, which are all electrically coupled to acontrol board 64 that is supported on thechassis 12 as well. Thecontrol board 64 may also be electrically coupled to areceiver 66 located in thechassis 12 for receiving radio signals from a remotely-located radio transmitter (not shown). The radio signals may be received by anexternal antenna 67 that is positioned on thechassis 12 and coupled to thereceiver 66. - Still referring to
FIG. 2 , agear drive assembly 68 connects therear drive motor 60 to therear wheel 26. Therear drive motor 60 transmits power through thegear drive assembly 68, which in turn rotates therear wheel 26 to propel the toy vehicle 10 forward. By enclosing thegear drive assembly 68 and other components within the shell orcasing 30, the toy vehicle 10 is protected against debris that may clog or damage thepropulsion drive 54 andgear drive assembly 68. In other embodiments, thegear drive assembly 68 may be replaced with a drive belt system, a chain drive, or some other means that drivingly couples thepropulsion drive 54 to therear wheel 26. - As shown in
FIGS. 2 and 3 , thesteering drive 56 is operatively connected to thefront fork 18, which includes substantially parallel first andsecond members 76, 78 (FIGS. 4A and 4B ) spaced about thefront wheel 24. The first andsecond members more fork couplers 80, which in turn are pivotally connected to thefront end 14 of thechassis 12 by apivot pin 82. Thus, thefront fork 18 pivots about anaxis 84. Theaxis 84 may also be referred to as acastering axis 84 for reasons discussed in more detail below. - Now referring more specifically to
FIGS. 2 and 3 , the operation of thesteering drive 56 is shown in greater detail. The steering drive 56 includes thesteering servo 62 and asteering arm 90, which is pivotally connected to thesteering servo 62 atpivot point 92. Alink 94 is connected betweensteering arm 90 andflange 98, which is fixedly coupled to thesecond member 78 of thefront fork 18. In operation, the steeringservo 62 generates steering outputs that move thesteering arm 90, which in turn moves link 94 either backwards or forwards depending on the desired direction for the toy vehicle 10. Consequently, when link 94 moves, thefront fork 18 pivots about casteringaxis 84 such that the toy vehicle 10 will turn either left or right relative tolongitudinal axis 102. Alternatively, thelink 94 may be pivotally connected to thefork coupler 80 or directly to a portion of thefront fork 18. - With reference to
FIGS. 4A and 4B , thefront wheel 24 comprises anouter tire 112 that surrounds first and second wheel halves 114, 116. The wheel halves 114, 116 are supported on afront axle 118 and may be held together byscrews 119 that extend throughbores 120 in thefirst wheel half 114 and into threaded bores 122 (FIG. 6 ) in thesecond wheel half 116. Thebores flywheel assembly 28. In other words, theflywheel assembly 28 may be encased between the wheel halves 114, 116 and housed within thefront wheel 24. - As shown in the figures, the
flywheel assembly 28 includes aweighted flywheel 130, aflywheel plate 132, and amotor 134. Theweighted flywheel 130 may be coupled to theflywheel plate 132 byscrews 136 that extend throughbores 138 in theflywheel plate 132 and anchor into corresponding threaded bores 140 (FIG. 6 ) on theflywheel 130. Theflywheel plate 132 is driven by themotor 134, which is positioned within amotor mount 144. Theflywheel plate 132 andflywheel 130 are adapted to rotate within thefront wheel 24 to create a gyroscopic effect. More specifically, theflywheel plate 132 is adapted to rotate about thefront axle 118, which is fixably attached to the first andsecond members 74, 78 offront fork 18. Unlike theflywheel plate 132, themotor mount 144 is operatively connected to the fixedfront axle 118 such that it does not rotate about theaxle 118. For example, ahexagonal portion 145 of thefront axle 118 may cooperate with ahexagonal bore 146 inmotor mount 144 to preventmotor mount 144 from rotating about theaxle 118.Wires 148 electrically couple themotor 134 to thepower supply 58 of toy vehicle 10. As discussed below, thewires 148 may be routed through hollow cavities in thefront axle 118 andfront fork 18. - In the embodiment shown in
FIGS. 4A and 4B , themotor 134 is drivingly coupled to theflywheel plate 132 by abelt drive system 150. Thebelt drive system 150 includes apulley 152 coupled to theflywheel plate 132 and apulley 154 connected to themotor 134. Abelt 156 connectspulley 152 topulley 154 such that when themotor 134 is energized, theflywheel plate 132 andweighted flywheel 130 spin about thefront axle 118. Although only one type ofbelt drive system 150 is illustrated and described herein, any other similar means may be used in accordance with the present invention to drivingly couple theflywheel plate 132 to themotor 134. For example,FIG. 5 shows an alternate configuration of theflywheel assembly 28. In this configuration, thepulley 152 ofFIGS. 4A and 4B is replaced with agear 162. Similarly, thepulley 154 ofFIGS. 4A and 4B is replaced with agear 164. Thegears belt 156 inFIGS. 4A and 4B is eliminated. In other words, whenmotor 134 is energized,gear 164 drives gear 162 to rotate theflywheel plate 132 andweighted flywheel 130. -
FIG. 6 shows the fully assembledfront wheel 24 andflywheel assembly 28. As shown in the figure, thewires 148 may be advantageously routed throughhollow cavities front fork 18 andfront axle 118, respectively. Such an arrangement prevents thewires 148 from interfering with the rotation of thefront wheel 24 orflywheel 130. Although only thesecond member 78 offront fork 18 is shown as having a hollow cavity, thefirst member 76 may include a hollow cavity as well. In such an embodiment thehollow cavity 170 in thefront axle 118 would extend substantially across the entire length of theaxle 118 to allow wires to be routed through both the first andsecond members motor 134. Alternatively, thewires 148 could be routed on the outside of thefront fork 18 and enter thehollow cavity 170 through the end ofaxle 118. - As shown in
FIG. 7 , the first andsecond members front fork 18 may be adapted to conduct electricity. In other words, first andsecond members motor 134. This arrangement eliminates the need to route wires through hollow cavities in thefront fork 18. Instead, a first set of wires 174 may be used to operatively connect thepower supply 58 to afirst end 18 a offront fork 18, and a second set ofwires 176 may be used to operatively connect asecond end 18 b offront fork 18 to themotor 134. The first and second sets ofwires 174, 176 are each comprised of apositive wire 180 and anegative wire 182. - Still referring to
FIG. 7 , the first andsecond members upper shock bodies lower shock shafts first end 18 a offront fork 18, the positive andnegative wires metal plates 192 located in theshock bodies plates 192 transfer any current tosprings 194, which in turn transfer current tolower shock shafts power supply 58 to themotor 134 via thenegative wire 182 andsecond member 78, and back to thepower supply 58 via thepositive wire 180 andfirst member 76. In order to couple the first set of wires 174 to thepower supply 58, both the positive andnegative wires first end 18 a offront fork 18 may be routed through thepivot pin 82. - To operate the toy vehicle 10 shown in
FIGS. 1 and 2 , the user places aswitch 200 in an “on” position to send power from thepower supply 58 to thecontrol board 64. Thepower supply 58 may be any suitable power source, such as rechargeable batteries. Upon receiving power, thecontrol board 64 may then energize themotor 134 via thewires 148. Because thefront axle 118 is fixedly connected to thefront fork 18 and themotor mount 144 is secured to thefront axle 118, themotor 134 does not rotate about thefront axle 118 when activated. Instead, themotor 134 drivespulley 154, which in turn drivesbelt 156 andpulley 152 in order to rotate theflywheel plate 132 about thefront axle 118. As discussed below, the rotation of theflywheel 130 with theflywheel plate 132 increases the stability of the toy vehicle 10 by creating a gyroscopic effect when the toy vehicle 10 is in motion. - The forward movement of the toy vehicle 10 is controlled by the
rear drive motor 60, which may be any suitable lightweight motor but typically is a battery powered DC motor or a lightweight internal combustion engine. When therear drive motor 60 is activated, therear wheel 26 propels the toy vehicle 10 forward and thefront wheel 24 freely rotates about thefront axle 118. Because theflywheel assembly 28 is not coupled to the wheel halves 114, 116 andtire 112, theflywheel 130 andfront wheel 24 rotate independently of each other. The rotational speed of theflywheel 130 is determined by type ofmotor 134, along with the sizes of thebelt 156 andpulleys 152, 154 (or gears 162, 164) being used. These components may be chosen in a manner that enables theflywheel 130 to rotate substantially faster than thefront wheel 24 during normal operation of the toy vehicle 10. This rotation of theflywheel 130 creates a gyroscopic effect that helps make the toy vehicle 10 less likely to fall over because of wind or other external forces, including rough terrain. For example, when the toy vehicle 10 encounters a bump along its path of motion, the gyroscopic effect helps keep the vehicle upright and maintain its current path of travel. - Additional stability is provided to the toy vehicle 10 by the castering
axis 84. As shown inFIGS. 1 and 2 , the toy vehicle 10 travels on asurface 210 and thecastering axis 84 projects ahead of where thefront wheel 24 contacts thesurface 210. Such an arrangement provides a positive caster with atrail 220, which represents the distance between where thecastering axis 84 intersects thetravel surface 210 and the contact point of thefront wheel 24 with thetravel surface 210. As the toy vehicle 10 travels forward, the casteringaxis 84 effectively pulls thefront wheel 24 along the toy vehicle's path of motion. Thus, this castering effect or force tends to realign thefront wheel 24 with the toy vehicle's path of motion when thefront wheel 24 deviates therefrom due to rough terrain or the like. - Although the toy vehicle 10 could function without the assistance of an operator, it is contemplated that an operator will remotely control the toy vehicle 10 by means of a radio transmitter. For example, to initiate forward motion, the operator sends a propulsion signal which is received by
receiver 66. The propulsion signal is then transmitted to thecontrol board 64, which energizesrear drive motor 60. Accordingly, the forward motion of the toy vehicle 10 may be controlled by the operator sending an appropriate propulsion signal to the toy vehicle 10. Similarly, steering signals may also be transmitted by the operator to control the operation of thesteering servo 62. Thus, by using a two-channel transmitter the operator can remotely and independently control both the forward motion and direction of the toy vehicle 10. - The
motor 134 may be controlled with or without use of the remote radio transmitter. For example, the toy vehicle 10 may be adapted such that themotor 134 is activated whenever theswitch 200 is placed in the “on” position. In such an embodiment themotor 134 operates independently of the two-channel transmitter and rotates theflywheel 130 about thefront axle 118, even when the toy vehicle 10 is not in motion. Alternatively, themotor 134 may be operatively connected to thereceiver 66 such that themotor 134 becomes operative when thereceiver 66 receives a propulsion signal. By only activating themotor 134 when the toy vehicle is in motion, the toy vehicle helps prolong the operable life ofpower supply 58 by utilizing less energy over a given period of time. In a further embodiment, thecontrol board 64 may have a timing mechanism adapted to deactivate themotor 134 after a predetermined time period of inactivity by thepropulsion drive 54. Such an arrangement helps prolong the operable life ofpower supply 58 as well. - While the present invention has been illustrated by the description of one or more embodiments thereof, and while the embodiments have been described in considerable detail, they are not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and method and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the scope or spirit of the general inventive concept.
Claims (20)
1. A toy vehicle, comprising:
a chassis having front and rear ends
front and rear wheels operatively connected to and supporting the respective front and rear ends, the front wheel being moveable to steer the toy vehicle;
a flywheel operatively associated with the front wheel, the flywheel being adapted to rotate independently of the front wheel; and
a motor operatively connected to the flywheel to rotate the flywheel and generate a gyroscopic effect to stabilize the toy vehicle while the toy vehicle is moving.
2. The toy vehicle of claim 1 , further comprising:
a fixed axle, the front wheel being rotatably mounted about the fixed axle; and
a motor mount fixedly connected to the axle, the motor being positioned within the motor mount.
3. The toy vehicle of claim 1 , further comprising:
two or more intermeshing gears operatively connecting the motor and the flywheel.
4. The toy vehicle of claim 1 , further comprising:
a drive belt operatively connecting the motor and the flywheel.
5. The toy vehicle of claim 1 , further comprising:
a power supply operatively associated with the chassis; and
one or more wires electrically coupling the power supply to the motor.
6. The toy vehicle of claim 5 , further comprising:
a front fork operatively connecting the front wheel to the front end of the chassis, the front fork having substantially parallel first and second members operatively connected to each other; and
an axle fixedly attached to the front fork, the front wheel being rotatably mounted about the fixed axle and positioned between the first and second members;
wherein at least one of the first and second members is hollow so that the one or more wires may be routed therethrough from the power supply to the motor.
7. The toy vehicle of claim 6 wherein at least a portion of the fixed axle is hollow so that the one or more wires may be further routed from the at least one hollow member to the motor without interfering with the rotation of the flywheel or front wheel.
8. The toy vehicle of claim 5 , further comprising
a first set of wires operatively connecting the power supply to a first end of the front fork; and
a second set of wires operatively connecting a second end of the front fork to the motor;
wherein the first and second members are adapted to conduct electricity.
9. The toy vehicle of claim 1 , further comprising:
a front fork operatively connecting the front wheel to the front end of the chassis, the front fork having substantially parallel first and second members operatively connected to each other; and
a steering drive supported by the chassis and operatively connected to the front fork, the steering drive being adapted to generate steering outputs to steer the toy vehicle.
10. The toy vehicle of claim 9 , further comprising:
a fork coupler pivotally connected to the front end of the chassis, the front fork being connected to the fork coupler so as to pivot about a castering axis.
11. The toy vehicle of claim 10 wherein when the toy vehicle travels on a surface and the castering axis projects ahead of where the front wheel contacts the surface.
12. The toy vehicle of claim 9 , further comprising:
a receiver operatively connected to the steering drive, the receiver being adapted to receive remotely generated steering signals to selectively move the steering drive and steer the toy vehicle.
13. The toy vehicle of claim 1 , further comprising:
a propulsion drive operatively associated with the chassis and drivingly coupled to the rear wheel.
14. The toy vehicle of claim 13 , further comprising:
a plurality of intermeshing gears drivingly coupling the motor to the rear wheel.
15. The toy vehicle of claim 13 , further comprising:
a drive chain drivingly coupling the motor to the rear wheel.
16. A remotely controlled, wheel-supported toy vehicle, comprising:
a chassis having front and rear ends;
front and rear wheels, the front wheel being moveable to steer the toy vehicle, the rear wheel being operatively connected to the rear end;
a front fork operatively connecting the front wheel to the front end of the chassis;
an axle fixedly attached to the front fork, the front wheel being rotatably mounted about the fixed axle;
a flywheel operatively associated with the front wheel, the flywheel being adapted to rotate independently of the front wheel;
a motor operatively connected to the flywheel to rotate the flywheel and generate a gyroscopic effect to stabilize the toy vehicle while the toy vehicle is moving;
a steering drive supported by the chassis and operatively connected to the front fork, the steering drive being adapted to generate steering outputs to steer the toy vehicle;
a propulsion drive operatively associated with the chassis and drivingly coupled to the rear wheel; and
a receiver adapted to receive remotely generated steering and propulsion signals, the receiver being operatively connected to the steering drive such that upon receiving a steering signal the steering drive generates a steering output to steer the toy vehicle, the receiver also being operatively connected to the propulsion drive such that upon receiving a propulsion signal the propulsion drive becomes operative.
17. The toy vehicle of claim 16 , further comprising:
a power supply operatively associated with the chassis; and
one or more wires electrically coupling the power supply to the motor.
18. The toy vehicle of claim 17 , further comprising:
a switch operatively associated with the power supply such that when the switch is placed in an on position the motor becomes operative to rotate the flywheel.
19. The toy vehicle of claim 17 wherein the motor is operatively connected to the receiver such that the motor becomes operative when the receiver receives a propulsion signal.
20. The toy vehicle of claim 17 , further comprising:
a control board supported by the chassis and electrically coupled to the receiver, the control board having a timing mechanism adapted to deactivate the motor after a predetermined time period of inactivity by the propulsion drive.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/085,341 US20060009119A1 (en) | 2004-07-09 | 2005-03-21 | Toy vehicle with stabilized front wheel |
US11/736,349 US20070207699A1 (en) | 2004-07-09 | 2007-04-17 | Toy vehicle with stabilized front wheel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58656104P | 2004-07-09 | 2004-07-09 | |
US11/085,341 US20060009119A1 (en) | 2004-07-09 | 2005-03-21 | Toy vehicle with stabilized front wheel |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/736,349 Continuation-In-Part US20070207699A1 (en) | 2004-07-09 | 2007-04-17 | Toy vehicle with stabilized front wheel |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060009119A1 true US20060009119A1 (en) | 2006-01-12 |
Family
ID=35541982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/085,341 Abandoned US20060009119A1 (en) | 2004-07-09 | 2005-03-21 | Toy vehicle with stabilized front wheel |
Country Status (1)
Country | Link |
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US (1) | US20060009119A1 (en) |
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US20080202827A1 (en) * | 2007-02-23 | 2008-08-28 | Jean-Michel Thiers | Motorcycle steering |
WO2009021087A3 (en) * | 2007-08-07 | 2009-04-16 | Rehco Llc | Two-wheel vehicle with a tilt mechanism and a stability mechanism |
US20090105006A1 (en) * | 2007-10-23 | 2009-04-23 | Doyle Robert S | Training Apparatus for improving a golf swing |
EP2058037A1 (en) * | 2007-11-12 | 2009-05-13 | Ar Racing S.R.L. | Stabilizing device for radio-controlled motorcycles |
US7581611B1 (en) | 2005-06-03 | 2009-09-01 | Rehco, Llc | Two-wheel vehicle with a tilt mechanism and stability mechanism |
US20090280718A1 (en) * | 2006-12-19 | 2009-11-12 | Mattel, Inc. | Three wheeled toy vehicle |
US20100090440A1 (en) * | 2005-06-30 | 2010-04-15 | The Gyrobike, Inc. | System and method for providing gyroscopic stabilization to a wheeled vehicle |
CN102151409A (en) * | 2010-02-12 | 2011-08-17 | 得胜科学模型股份有限公司 | Rear wheel assembly of remote control model two-wheel vehicle |
WO2013042146A1 (en) * | 2011-09-22 | 2013-03-28 | Ar Racing S.R.L. | Radio controlled motorcycle, particularly of the type with gyroscopic stabilization |
US8746721B2 (en) | 2012-07-26 | 2014-06-10 | Jean-Michel Thiers | Motorcycle steering with four-bar linkage |
US20190009848A1 (en) * | 2015-08-13 | 2019-01-10 | Yvolve Sports Limited | Wheel for a human-powered vehicle |
US20190283498A1 (en) * | 2016-09-29 | 2019-09-19 | Cloverglade Ltd. | Wheel for vehicle |
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US8746721B2 (en) | 2012-07-26 | 2014-06-10 | Jean-Michel Thiers | Motorcycle steering with four-bar linkage |
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Legal Events
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AS | Assignment |
Owner name: BANG ZOOM DESIGN LTD., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOETING, MICHAEL G.;HAMILTON, NEIL;REEL/FRAME:016407/0952 Effective date: 20050318 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |