Abstract:
An installing and a removing device for an engine clutch of a remote-controlled toy car respectively install and remove an engine clutch easily, quickly and safely, not hurting a hand of a person or damaging the engine itself, clutch leaves or clutch springs.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    This invention relates to an installing and a removing device for an engine clutch of a remote-controlled toy car, particularly to one easily and quickly install and remove respectively a clutch on or from an engine of a toy car, not giving any wound or harm to a player&#39;s hand, or damaging the clutch itself or the engine at all.  
           [0003]    2. Description of the Prior Art  
           [0004]    A conventional engine clutch  100  of a remote-controlled toy car shown in FIG. 9 is installed on one side of an engine  200 , having a toque spring  101 , which produces outward elastic force, giving rise to resistance every time when the engine clutch  100  is installed on or removed from an engine, so a player has to use very strong force for doing it only with a slotted blade screwdriver. Then it takes much time and work to install or remove the clutch, and if worse, the screwdriver may slip down to hurt a hand of the player or to collide with the clutch or the engine, which may be damaged unintentionally.  
         SUMMARY OF THE INVENTION  
         [0005]    The purpose of the invention is to offer an installing and a removing device for an engine clutch of a remote-controlled toy car, which can easily install or remove a clutch on or from an engine with quickness, taking little time and not hurting a hand of a player or the clutch itself. 
       
    
    
     BRIEF DESCRIPTION OF DRAWINGS  
       [0006]    This invention will be better understood by referring to the accompanying drawings, wherein:  
         [0007]    [0007]FIG. 1 is a perspective view of a removing device for an engine clutch of a remote-controlled toy car in the present invention; FIG. 2 is an exploded perspective view of the removing device for an engine clutch of a remote-controlled toy car in the present invention;  
         [0008]    [0008]FIG. 3 is a cross-sectional view of the removing device for an engine clutch of a remote-controlled toy car in the present invention;  
         [0009]    [0009]FIG. 4 is a perspective view the removing device being used to remove a clutch off an engine in the present invention;  
         [0010]    [0010]FIG. 5 is a perspective view of the removing device in removing a clutch off an engine in the present invention;  
         [0011]    [0011]FIG. 6 is a perspective view of an installing device for an engine clutch of a remote-controlled toy car in the present invention;  
         [0012]    [0012]FIG. 7 is a perspective view of the installing device used to install a clutch on an engine in the present invention;  
         [0013]    [0013]FIG. 8 is a perspective view of the installing device installing a clutch on an engine in the present invention; and,  
         [0014]    [0014]FIG. 9 is a perspective view of a clutch separated from an engine. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0015]    As shown in FIG. 7, a common remote-controlled toy car engine  1  has a spindle  11 , a round base  12  fitting around the spindle  11 , and an annular groove  13  formed in a circumferential surface of the round base  12 , and three rods  14  standing upright and spaced apart on the side surface of the engine around the round base  12 .  
         [0016]    Then, as shown in FIG. 4, a clutch has three leaves  2  positioned on the side surface of the engine  1 , respectively having an intermediate groove  21  in an intermediate portion for a torque spring  3  to fit therein, and a through hole  22  at one end, Then each rod  31  fits through the through hole  22  and further through the torque spring  3 , with one end of the torque spring  3  sandwiched by the rear edge of the clutch leaf  2  and with the other end of the spring  3  sticking in the annular groove  13  of the round base  12 . Thus, the torque spring  3  produces strong torque force, so the engine clutch is very hard to install on or remove off the engine.  
         [0017]    A removing device for an engine clutch of an remote-controlled toy car in the present invention, as shown in FIG. 1 and  3 , includes a body  4 , a thumb screw  5  as maim components combined together. The body  4  is shaped to have a lower round portion and a cone-shaped upper portion, and an upper smaller diameter cylindrical end  42  and a center lengthwise threaded hole  41  for the thumb screw  5  to screw therein from under. The thumb screw  5  has a large head  51  for easy gripping by fingers to rotate. The upper cylindrical end  42  has an inner hollow  421  and three sloped walls  422  spaced apart around the center hollow  421 , and an engage groove  423  formed in a lower portion of each sloping wall  422 .  
         [0018]    As shown in FIG. 4 and  5 , when a clutch on an engine  1  is to be removed off, fit the inner hollow  421  of the upper cylindrical end  42  of the body  4  on the three clutch leaves  2 , rotate the thumb screw  5  to separate the body  4  off the annular groove  13 , with the three sloping walls  422  pushing the three torque springs  3  off the annular groove  13 . When the body  4  continues to be pushed toward the engine  1 , the torque springs  3  are hooked in the engage grooves  423 , with the body  4  possible to be pulled outward together with the clutch leaves  2 , which then separate from the engine  1 , removing the clutch off the engine with easiness and quickness.  
         [0019]    Next, as shown in FIG. 6, an installing device for an engine clutch of a remote-controlled toy car includes a cone-shaped body  6  provided with an upper cylindrical end  61  with a actuating member  62  standing upright on its annular wall, and an engage groove  63  formed in lower portion of the actuating member  62 . The center hole  611  of the upper cylindrical end  61  fits around the spindle  11  of the engine  1 , with the engage groove  63  hooks with the clutch leaf  2 . As shown in FIGS. 7 and 8, the clutch leaves  2  are installed one by one separately on the engine, using fingers gripping the body  6 , with the actuating member  62  pushing open the torque spring  3 , forcing the clutch leaf  2  push toward the round base  12  of the engine  1  into the annular groove  13 , and then the actuating member  62  is made to push the torque spring  3  fit in the annular groove  13  stably. Thus the three clutch leaves  2  are one by one installed on the engine  1 .  
         [0020]    While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.