| 摘要 |
An air flow switching apparatus includes a six-way valve, a Geneva mechanism, and a driving motor. The six-way valve includes an inlet, an outlet and four openings. The driving motor with the Genera mechanism connected with the valve vane and the air flow switching apparatus is installed within an inflatable toy. The four openings of the six-way valve are respectively connected with four airbags at a periphery of the inflatable toy and the airbags are used as limbs of the inflatable toy. When the air pump pumps air into a body, a portion of the air passes through the six-way valve into some airbags and a portion of the air is released from some airbags. The driving motor drives the valve vane to intermittently rotate via the Geneva mechanism. Therefore, the limbs generate different motions by the air to let the inflatable toy have vivid motion effect. |
| 主权项 |
1. An air flow switching apparatus with six-way valve for inflatable toy, comprising:
a six-way valve including:
a valve housing having:
an alignment chamber in a circular shape;an inlet and an outlet disposed at two sides of the alignment chamber along a radial direction of the alignment chamber and opposite to each other;a first opening, a second opening, a third opening, a fourth opening, the inlet, and the outlet disposed at a periphery of the valve housing at equiangular intervals and connected with the alignment chamber respectively;the first opening and the second opening disposed at one side of a centre line from the inlet to the outlet;the third opening and the fourth opening disposed at the other side of the centre line from the inlet to the outlet; anda valve vane having:
a length corresponding to a diameter of the alignment chamber; anda pivot at a middle of the valve vane,wherein the valve vane is rotatably and pivotally disposed within the alignment chamber and is rotated to switch positions within the alignment chamber to respectively vary a connection relationship of the inlet and the outlet with the first opening, the second opening, the third opening, and the fourth opening; a Geneva mechanism including:
a driving wheel having:
a circular wheel body;an axle portion disposed at a centre of the circular wheel body;an arced notch disposed at one side of the circular wheel body;a cam portion formed at one end surface of the driving wheel along an axial direction of the driving wheel and radially protruding to the arced notch; anda guiding rod in a circular shape disposed on the cam portion and at a position where a distance from the cam portion to the axle portion is greater than a radius of the circular wheel body; anda Geneva wheel disposed outside of the valve housing of the six-way valve and having:
a core wheel portion connected with the pivot of the valve vane;six guiding units disposed at a periphery of the core wheel portion at equiangular intervals;six concave arc portions each formed at an exterior edge of a respective one of the six guiding units, respectively corresponding to an exterior contour of the circular wheel body, and selectively sliding to contact the circular wheel body of the driving wheel; andsix guiding grooves respectively disposed along a radial direction of the driving wheel between every two of the adjacent guiding units and configured to be selectively inserted by the guiding rod of the driving wheel; and a driving motor disposed outside of the valve housing of the six-way valve and having:
a shaft connected with the axle portion of the driving wheel of the Geneva mechanism; wherein the driving motor drives the valve vane of the six-way valve to alternatively rotate via the Geneva mechanism. |
