Water submergence toy

Abstract

A water submergence toy is not performed using a screw. It is done by only changing the buoyancy by means of changing the volume. Because of this, the control and surfacing responsiveness becomes very poor. The water submergence toy according to the present invention compresses the air inside a piston when the piston is pushed towards the inside of a cylinder to reduce the volume. This makes the buoyancy smaller. Conversely, when the piston is moved in a direction away from the cylinder, the volume of the air inside the piston becomes larger and the buoyancy increases. In addition, because this type of buoyancy adjustment can be performed manually as well, those who play with a water submergence toy can adjust the buoyancy whenever it is necessary. Because of this, the buoyancy of the water submergence toy can always be maintained in a state adjusted for optimum buoyancy.

1 . A water submergence toy remotely controlled by control signals from an external source that at least submerges and rises upwards within water and is characterized by being provided with a cylinder inside the covering of said water submergence toy along with a piston being provided that travels up and down inside said cylinder by means of a manual operation from outside said cylinder to obtain small adjustments of the buoyancy by adjusting the up and down movement position of said cylinder.  
   
   
       2 . A water submergence toy as set forth in  claim 1  wherein said manually operated part is an exterior accessory.  
   
   
       3 . A water submergence toy remotely controlled by external control signals that navigates within water and is comprised by a cylinder body which enclose air inside and a freely moveable piston body that is linked to a rod body connected to the outer portion of said cylinder body and that separates the space within said cylinder body into two spaces, said water submergence toy is also provided with a balloon that links to at least one of said two spaces separated by said piston body, and an internal power source that expands and contracts said balloon by means of moving said rod body using control signals from an external source to move said piston body up and down.  
   
   
       4 . A water submergence toy as set forth in  claim 3  wherein the space that links said balloon is a space on the side where said rod body extends to the outside of said cylinder body.  
   
   
       5 . A water submergence toy as set forth in  claim 3  wherein said balloon is positioned farther in front than the center of gravity of said water submergence toy.