Tracking toy vehicle

Abstract

A tracking toy vehicle includes a vehicle body, a left drive wheel, a right drive wheel, a sensing device installed at bottom of the vehicle body for sensing a tracking line, a controller electrically connected to the sensing device, a left driving device for driving the left drive wheel to steer, and a right driving device for driving the right drive wheel to steer. The sensing device includes a first sensor and a second sensor respectively installed on left and right sides of an axle of the vehicle body, for respectively sensing whether the toy vehicle is following the tracking line. The sensing device can identify the tracking line under the vehicle body to confirm the location of the tracking line, and then the controller changes the rotational speed of the left driving device or the right driving device to steer the toy vehicle along the tracking line.

What is claimed is: 
     
         1 . A tracking toy vehicle, which includes a vehicle body, a left drive wheel, a right drive wheel, a sensing device installed at bottom of the vehicle body for sensing a tracking line, a controller electrically connected to the sensing device, a left driving device for driving the left drive wheel to steer, and a right driving device for driving the right drive wheel to steer;
 the sensing device includes a first sensor and a second sensor respectively installed on left and right sides of an axle of the car body, for respectively sensing whether the location is corresponded to or deviated from the tracking line;   the first sensor electrically connected to the left driving device through the controller is provided to control a rotational speed of the left driving device by sensing signals of the first sensor;   the second sensor electrically connected to the right driving device through the controller is provided to control a rotational speed of the right driving device by sensing signals of the second sensor; or   the first sensor electrically connected to the right driving device through the controller is provided to control a rotational speed of the right driving device by sensing signals of the first sensor;   the second sensor electrically connected to the left driving device through the controller is provided to control a rotational speed of the left driving device by sensing signals of the second sensor.   
     
     
         2 . The tracking toy vehicle as claimed in  claim 1 , wherein the first sensor and the second sensor are symmetrically set on two sides of a longitudinal centerline of the vehicle body and near a front end of the vehicle body. 
     
     
         3 . The tracking toy vehicle as claimed in  claim 1 , wherein the first sensor and the second sensor are photosensitive diodes. 
     
     
         4 . The tracking toy vehicle as claimed in  claim 3 , wherein the toy car further includes a light source set on a lower side of the car body. 
     
     
         5 . The tracking toy vehicle as claimed in  claim 4 , wherein the light source includes a first infrared light and a second infrared light symmetrically set on the two sides of the longitudinal centerline of the car body, the first infrared light and the second infrared light are set near the first sensor and the second sensor respectively. 
     
     
         6 . The tracking toy vehicle as claimed in  claim 5 , wherein the light source further includes a third infrared light set on the longitudinal centerline of the vehicle body, the third infrared light is located between the first infrared light and the second infrared light, the sensing device further includes a third sensor set on the longitudinal centerline of the vehicle body, the third sensor is a photosensitive diode and located between the first sensor and the second sensor, the third sensor is electrically connected to the left driving device and the right driving device through the controller. 
     
     
         7 . The tracking toy vehicle as claimed in  claim 4 , wherein the left driving device includes a left motor, the right driving device includes a right motor. 
     
     
         8 . The tracking toy vehicle as claimed in  claim 7 , wherein the left driving device further includes a left gear set installed between the left motor and the left drive wheel, the left gear set are respectively engaged with an output shaft of the left motor and an axle of the left drive wheel;
 the right driving device further includes a right gear set installed between the right motor and the right drive wheel, the right gear set are respectively engaged with an output shaft of the right motor and an axle of the right drive wheel.   
     
     
         9 . The tracking toy vehicle as claimed in  claim 7 , wherein a power supply slot provided for power supply installation is set on the vehicle body, multiple touch points set on the power supply slot are provided to be electrically connected to the light source, the left motor and the right motor respectively. 
     
     
         10 . The tracking toy vehicle as claimed in  claim 9 , wherein the tracking toy vehicle further includes a speaker, the speaker is electrically connected to the controller. 
     
     
         11 . The tracking toy vehicle as claimed in  claim 2 , wherein the first sensor and the second sensor are photosensitive diodes. 
     
     
         12 . The tracking toy vehicle as claimed in  claim 11 , wherein the toy car further includes a light source set on a lower side of the car body. 
     
     
         13 . The tracking toy vehicle as claimed in  claim 12 , wherein the light source includes a first infrared light and a second infrared light symmetrically set on the two sides of the longitudinal centerline of the car body, the first infrared light and the second infrared light are set near the first sensor and the second sensor respectively. 
     
     
         14 . The tracking toy vehicle as claimed in  claim 13 , wherein the light source further includes a third infrared light set on the longitudinal centerline of the vehicle body, the third infrared light is located between the first infrared light and the second infrared light, the sensing device further includes a third sensor set on the longitudinal centerline of the vehicle body, the third sensor is a photosensitive diode and located between the first sensor and the second sensor, the third sensor is electrically connected to the left driving device and the right driving device through the controller. 
     
     
         15 . The tracking toy vehicle as claimed in  claim 12 , wherein the left driving device includes a left motor, the right driving device includes a right motor. 
     
     
         16 . The tracking toy vehicle as claimed in  claim 15 , wherein the left driving device further includes a left gear set installed between the left motor and the left drive wheel, the left gear set are respectively engaged with an output shaft of the left motor and an axle of the left drive wheel;
 the right driving device further includes a right gear set installed between the right motor and the right drive wheel, the right gear set are respectively engaged with an output shaft of the right motor and an axle of the right drive wheel.   
     
     
         17 . The tracking toy vehicle as claimed in  claim 15 , wherein a power supply slot provided for power supply installation is set on the vehicle body, multiple touch points set on the power supply slot are provided to be electrically connected to the light source, the left motor and the right motor respectively. 
     
     
         18 . The tracking toy vehicle as claimed in  claim 17 , wherein the tracking toy vehicle further includes a speaker, the speaker is electrically connected to the controller.