Backward shifting and accelerating synchronous control system for a remote-controlled toy car

Abstract

A backward shifting and accelerating synchronous control system installed in a remote-controlled gasoline engine toy car and controlled by a remote controller to move the toy car backwards and to accelerate the speed. The system includes an accelerator control unit held in position by a torsional spring and turned to control the oil flow rate of the backward steering accelerating oil valve of the engine of the toy car, a swivel arm, the swivel arm having a first end coupled to the forward/backward steering control mechanism of the gasoline engine toy car by a first link and a second end coupled to the accelerator control unit by a second link, and a server controlled by a remote controller to turn the swivel arm, to further shift the forward/backward steering control mechanism to the backward steering mode and drive the accelerator control unit to open the backward steering accelerating oil valve of the engine of the toy car.

What the invention claimed is:  
     
         1 . A backward shifting and accelerating synchronous control system installed in a remote-controlled gasoline engine toy car having a gasoline engine with a backward steering accelerating oil valve and controlled by a remote controller to move said toy car backwards and to accelerate the speed, comprising: 
 a server unit, said server unit comprising a swivel arm, the swivel arm of said server unit having a first end and a second end, a server controlled to turn the swivel arm of said server unit forwards and backwards, a first link coupled between the first end of the swivel arm of said server unit and the forward/backward steering control mechanism of said gasoline engine toy car, a second link coupled to the second end of the swivel arm of said server unit; and    an accelerator control unit coupled to one end of the second link said server unit remote from the swivel arm and adapted to control the oil flow rate of the backward steering accelerating oil valve of the engine of said gasoline engine toy car, said accelerator control unit comprising a base frame, a swivel arm pivoted to said base frame and coupled to the backward steering accelerating oil valve of the engine of said gasoline engine toy car and turned to close/open the backward steering accelerating oil valve of the engine of said gasoline engine toy car, a link coupled between one end of the swivel arm of said accelerator control unit and the backward steering accelerating oil valve of the engine of said gasoline engine toy car and driven by the swivel arm of said accelerator control unit to control the oil flow rate of the backward steering accelerating oil valve of the engine of said gasoline engine toy car, a driving member pivoted to said base frame and coupled to one end of the second link of said server unit and driven by the second link of said server unit to turn the swivel arm of said accelerator control unit to regulate the oil flow rate of the backward steering accelerating oil valve of the engine of said gasoline engine toy car.    
     
     
         2 . The backward shifting and accelerating synchronous control system of  claim 1 , wherein said base frame comprises a front protruded portion; the swivel arm of said accelerator control unit comprises a bottom lug, said bottom lug comprising a horizontal screw hole, and an adjustment screw threaded into the screw hole of said bottom lug and adapted to act with the front protruded portion of said base frame to limit the turning angle of the swivel arm of said accelerator unit.  
     
     
         3 . The backward shifting and accelerating synchronous control system of  claim 1 , wherein said accelerator control unit further comprises a torsional spring adapted to return the swivel arm of said accelerator unit after each action.  
     
     
         4 . The backward shifting and accelerating synchronous control system of  claim 1 , wherein the swivel arm of said accelerator control unit comprises a series of through holes longitudinally arranged at a free end thereof and selectively connected to one end of the link of said accelerator control unit.  
     
     
         5 . The backward shifting and accelerating synchronous control system of  claim 1 , wherein said driving member comprises a barrel comprising a barrel-like body pivoted to said base frame, two horizontal arms perpendicularly extended from the periphery of said barrel-like body at two sides at different elevations and extended in X-axis direction and selectively coupled to the second link of said server, and two horizontal wings perpendicularly extended from the periphery of said barrel-like body at two sides and extended in Y-axis direction and adapted to move the swivel arm of said accelerator control unit, said horizontal wings each having a front protruded portion adapted to move the swivel arm of said accelerator control unit.  
     
     
         6 . The backward shifting and accelerating synchronous control system of  claim 5 , wherein said horizontal arms each have a longitudinal series of through holes for the connection of the second link of said server selectively.