Abstract:
An impeller module of snow drop water ball includes an magnet driven impeller module attached on the anti-leak rubber plug for propelling the snow drops and turning the decoration in a glass dome. The magnet driven impeller module has a blade ring which is magnetically couple with a magnetic rotor, and drive by the magnetic rotor from outside of the snow drop ball. Using the impeller module embodiment of the present invention, the anti-leak rubber plug shall no longer in need of forming a shaft hole, so as can structurally solve the long-suffering liquid leakage problem of the snow drop water ball and prolonging its service life.

Description:
BACKGROUND OF THE INVENTION 
   This invention relates to module applicable to a snow drop water ball structure, particularly to an impeller module driven by a magnetic power transmitted from the outside of the snow water ball. 
   Illustrated in  FIG. 8  is a conventional water ball structure consisting of a base ( 10 ), a glass dome ( 20 ), and an anti-leak rubber plug ( 30 ). The glass dome ( 20 ) is filled with a liquid, having an open lower side sealed by anti-leak rubber plug ( 30 ) to prevent the liquid leaking out. A decoration ( 31 ) is housed in the glass dome and fixed on the rubber plug ( 30 ). The rubber plug ( 30 ) has an annular curved projection on an outer annular surface to engage an annular convex formed in the open lower side of the glass dome ( 20 ), thereby enhancing the mutual contact tightness therein. 
   Conventional music snow drop ball is also well known in the art, including a driving mechanism for rotating a propeller placed in the water ball. The propeller rotates to drive up the snow drops in the water in accordance with the music emitted from a music bell. A shaft rod is passed through a shaft hole of a rotary tray of a base of the decoration. A clearance exists between the shaft rod and the shaft hole. Therefore, after a period of use, the water in the water ball tends to infiltrate back through the clearance into the driving mechanism. This will lead to rusting of the driving mechanism and affect the operation thereof. 
   U.S. Pat. No. 5,864,976 by Yang discloses a driving mechanism of music snow drop ball using an upper and lower silicone gaskets to prevent the water leaking from a shaft hole, so as to prevent the drawbacks which could caused by water leaking; however, when the gasket is fastened to bind the shaft rod, the friction between the shaft rod and the silicone gaskets may weakened the rotation of the shaft therein, so as causing the snow drops can be hardly driven up smoothly. 
   SUMMARY OF THE INVENTION 
   It is therefore a primary object of the present invention to provide a impeller module which could be driven by a magnetic power transmitted from the outside of the snow water ball, so that could provide waterproof effect and avoid outside driven mechanisms rusting. 
   According to the above object, the impeller module of music snow drop ball of the present invention includes an magnet driven impeller module which is attached on an anti-leak rubber plug for propelling the flow of the snow drops and rotation of the decoration in the glass dome. The magnet driven impeller module having a ring body provided with a magnetic part driven by a magnetic rotor from outside of the music snow drop ball to form as a magnetic couple, and receiving a rotational power to rotate a blade ring and a rotational disc thereof simultaneously, so as to function as a snow drop water ball and keep the anti-leak rubber plug therein as same as the conventional water ball structure to be integrally without making a shaft hole therein for outside driving mechanism, music bell, driving motor etc., so as to prevent water leaking problems. 
   The present invention can be best understood through the following description and accompanying drawings, wherein: 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a sectional assembled view for illustrating of the use of the first embodiment the present invention; 
       FIG. 2  is a sectional assembled view for illustrating of the use of the second embodiment the present invention; 
       FIG. 3  is a cross-sectional assembled view for illustrating of the use of the third embodiment the present invention; 
       FIG. 4  is a cross-sectional assembled view of an impeller module with double blade ring of the second embodiment the present invention; 
       FIG. 5  is an exploded cross-sectional view of the impeller module with double blade ring of the second embodiment the present invention; 
       FIG. 6  is a cross-sectional assembled view of an impeller module with single blade ring of the second embodiment the present invention; 
       FIG. 7  is an exploded cross-sectional view of the impeller module with single blade ring of the second embodiment the present invention; and 
       FIG. 8  is a cross-sectional view of a conventional water ball decoration. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   Referring to  FIG. 1 , according to the present invention, a snow drop water ball may consisting of a base ( 10 ), a glass dome ( 20 ), an impeller module ( 6 A) with inclined blades, a magnet rotor ( 50 ) driven by a music bell ( 60 ) and an anti-leak rubber plug ( 30 ). The glass dome ( 20 ) is filled with a liquid and a plurality of snow-like impurities, and having an open lower side sealed by anti-leak rubber plug ( 30 ) to prevent the liquid leaking out. A decoration ( 40 ) is housed in the glass dome and fixed on the top of the impeller module ( 6 A). 
   Referring to  FIG. 2 , according to the present invention, a snow drop water ball may consisting of a base ( 10 ), a glass dome ( 20 ), an impeller module ( 6 B) with double blade ring, a magnet rotor ( 50 ) and an anti-leak rubber plug ( 30 ). The glass dome ( 20 ) is filled with a liquid and a plurality of snow-like impurities, and having an open lower side sealed by anti-leak rubber plug ( 30 ) to prevent the liquid leaking out. A decoration ( 40 ) is housed in the glass dome ( 20 ) and fixed on the top of the impeller module ( 6 B). The magnet rotor ( 50 ) is driven by a drive motor ( 70 ) which connect to a power supply unit ( 71 ). The power supply unit ( 71 ) can be an AC power, DC power or either therein. 
   Referring to  FIG. 3 , according to the present invention, a snow drop water ball may also consisting of a base ( 10 ), a glass dome ( 20 ), an impeller module ( 6 C) with single blade ring, a magnet rotor ( 50 ), and an anti-leak rubber plug ( 30 ). The glass dome ( 20 ) is filled with a liquid and a plurality of snow-like impurities, and having an open lower side sealed by anti-leak rubber plug ( 30 ) to prevent the liquid leaking out. A decoration ( 41 ) is housed in the glass dome ( 20 ) and fixed on the top of the impeller module ( 6 B). The magnet rotor ( 50 ) is driven by a drive motor ( 70 ) which been connected to a power supply unit ( 71 ). Further, there is a music instrument ( 72 ) provided to play music according to the rotation of drive motor ( 70 ). 
   The decorations ( 40 ) and ( 41 ) illustrated above can be varied in different shaped and quantities according to the requirement of the manufacture in order to achieve the variation of the overall formation. 
   As shown in above illustrated, the magnet rotor ( 50 ) can be configured basically in a disc body shape coupled to and rotatable with a shaft which connect to music bell ( 60 ) or drive motor ( 70 ), and including a plurality of permanent magnetic ( 51 ) arranged in a circular array. Preferably, the disc body of the magnet rotor ( 50 ) may be made from polymeric, for example, polyolefin, such as polypropylene and the like, and encapsulates the circular array of permanent magnetic ( 51 ). The fabrication of the magnet rotor ( 50 ) provided can using various encapsulation techniques, many of which are well known and conventional in the art. Injection or insert molding may be employed to provide the magnet rotor ( 50 ). 
   Referring now to  FIGS. 7-8 , according to the present invention, is a second embodiment of the impeller module ( 6 B) with double blade ring comprising: a base disc ( 6 B 10 ), a blade ring ( 6 B 20 ), a gear system ( 6 B 30 ) and a rotational disc ( 6 B 40 ). The base disc ( 6 B 10 ) is fixedly connect to an anti-leak rubber plug ( 30 ) at the bottom surface ( 6 B 11 ) thereof and formed with a bearing surface ( 6 B 12 ) on a spindle portion. A Pin or a plurality of Pins ( 6 B 13 ) and a central post ( 6 B 14 ) protrude beyond the base disc ( 6 B 10 ) for rotatably supporting the gear system ( 6 B 30 ) and the rotational disc ( 6 B 40 ) thereon. 
   The blade ring ( 6 B 20 ) comprising a ring body ( 6 B 21 ) having a spindle hole ( 6 B 23 ) for rotatably mounted on the bearing surface ( 6 B 12 ). A plurality of permanent magnets ( 6 B 22 ) connected to the ring body ( 6 B 21 ) and arranged in a circular array for receiving the rotational power with a magnetic coupling from the magnet rotor ( 50 ). A set of blades ( 6 B 24 ) extending radially from the periphery of ring body ( 6 B 21 ) for propelling and forcing the snow-like impurities flying over and over in the liquid of the snow drop ball. 
   The blade ring ( 6 B 20 ) having a inner gear ( 6 B 25 ) for meshing with the gear system ( 6 B 30 ) and transmitting the rotational power from the magnet rotor ( 50 ) to rotate the rotational disc ( 6 B 40 ). 
   The rotational disc ( 6 B 40 ) is rotatably supported by the central post ( 6 B 14 ), and having a gear portion ( 6 B 42 ) adapted to mesh with gear system ( 6 B 30 ). Therefore, when the magnet rotor ( 50 ) rotates, the ring body ( 6 B 21 ) and the rotational disc ( 6 B 40 ) will turn in different velocities and/or different directions, that would carry the blades ( 6 B 24 ) to fan up the snow-like impurities and rotate the decoration on the top of the rotational disc ( 6 B 40 ). 
   For enhancing the fan up effect, in a still further arrangement, the rotational disc ( 6 B 40 ) can further comprising a set of blades ( 6 B 43 ) extending radially from the periphery thereof, that would urge the flying of snow-like impurities more turbulently. 
   Referring now to  FIGS. 4-5 , according to the present invention, is a third embodiment of the impeller module ( 6 C) with single blade ring comprising: a base disc ( 6 C 10 ), a blade ring ( 6 C 20 ), a gear system ( 6 C 30 ) and a rotational disc ( 6 C 40 ). The base disc ( 6 C 10 ) is fixedly connect to an anti-leak rubber plug ( 30 ) at the bottom surface ( 6 C 11 ) thereof and formed with a bearing surface ( 6 C 12 ) on a spindle portion. A Pin or a plurality of Pins ( 6 C 13 ) and a central post ( 6 C 14 ) protrude beyond the base disc ( 6 C 10 ) for rotatably supporting the gear system ( 6 C 30 ) and the rotational disc ( 6 C 40 ) thereon. 
   The blade ring ( 6 C 20 ) comprising a ring body ( 6 C 21 ) having a spindle hole ( 6 C 23 ) for rotatably mounted on bearing surface ( 6 C 12 ). A plurality of permanent magnets ( 6 C 22 ) connected to the ring body ( 6 C 21 ) and arranged in a circular array for receiving the rotational power with a magnetic coupling from the magnet rotor ( 50 ). A set of blades ( 6 C 24 ) extending radially from the periphery of ring body ( 6 C 21 ) for propelling and forcing the snow-like impurities flying over and over in the liquid of the snow drop ball. 
   The blade ring ( 6 C 20 ) having a inner gear ( 6 C 25 ) for meshing with the gear system ( 6 C 30 ) and transmitting the rotational power from the magnet rotor ( 50 ) to rotate the rotational disc ( 6 C 40 ). 
   The rotational disc ( 6 C 40 ) is rotatably supported by the central post ( 6 C 14 ), and having a gear portion ( 6 C 42 ) adapted to mesh with gear system ( 6 C 30 ). Therefore, when the magnet rotor ( 50 ) rotates, the ring body ( 6 C 21 ) and the rotational disc ( 6 C 40 ) will turn in different velocities and/or different directions, that would carry the blades ( 6 C 24 ) to fan up the snow-like impurities and rotate the decoration on the top of the rotational disc ( 6 C 40 ). 
   Referring to  FIGS. 4-7 , it is recommended that the ring body ( 6 B 21 ), ( 6 C 21 ) be manufactured from nylon or polymeric, for example, polyolefin, such as polypropylene and the like, and encapsulates the circular array of permanent magnetic ( 6 B 22 ), ( 6 C 22 ). The fabrication of the ring body ( 6 B 21 ), ( 6 C 21 ) can using various encapsulation techniques, many of which are well known and conventional in the art. Injection or insert molding may be employed to provide the ring body ( 6 B 21 ), ( 6 C 21 ). Preferably, the ring body and the blade ring ( 6 C 20 ) are integrally formed as an structure. 
   As can be understood from the above description, while a conventional water ball add the snow-like impurities and the impeller module ( 6 A) according to the present invention, that would turn to be a snow drop water ball. Compare to the prior art, to use this invention, the anti-leak rubber plug no longer to need a shaft hole, so as to prevent liquid leakage from the glass dome and prolonging service life of snow drop water ball. 
   While the preferred embodiments of the invention have 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 which may fall within the spirit and scope of the invention. 
   Parts List 
   
       
         10  a base 
         20  a glass dome 
         30  an anti-leak rubber plug 
         31  a decoration 
         40  a decoration 
         41  a decoration 
         50  a magnet rotor 
         51  a permanent magnet 
         60  a music bell 
         70  a drive motor 
         71  a power supply unit 
         72  a music instrument 
         6 A an impeller module with inclined blades 
         6 B an impeller module with double blade ring 
         6 B 10  a base disc 
         6 B 11  a bottom surface 
         6 B 12  a bearing surface 
         6 B 13  a pin 
         6 B 14  a central post 
         6 B 20  a blade ring 
         6 B 21  a ring body 
         6 B 22  a permanent magnet 
         6 B 23  a spindle hole 
         6 B 24  a set of blades 
         6 B 25  a inner gear 
         6 B 30  a gear system 
         6 B 40  a rotational disc 
         6 B 41  a top surface 
         6 B 42  a gear portion 
         6 B 43  a set of blades 
         6 C an impeller module with single blade ring 
         6 C 10  a base disc 
         6 C 11  a bottom surface 
         6 C 12  a bearing surface 
         6 C 13  a pin or pins 
         6 C 14  a central post 
         6 C 20  a blade ring 
         6 C 21  a ring body 
         6 C 22  a permanent magnet 
         6 C 23  a shaft hole 
         6 C 24  a set of blades 
         6 C 25  a inner gear 
         6 C 30  a gear system 
         6 C 40  a rotational disc 
         6 C 41  a top surface 
         6 C 42  a gear portion 
         6 C 43  a set of blades