Ventilation mechanism having automatic waterproofing function

Abstract

The present device relates to a ventilation mechanism that is to be disposed in shoes such as boots so as to circulate air inside and outside the shoes, and, more particularly, to a ventilation mechanism having an automatic waterproofing function so as to become waterproof only when the ventilation mechanism is immersed in water. The present device includes: a ventilation means that is disposed so as to be directed toward the top of one side of a shoe; a ventilation guide means that is disposed on an upper end of the ventilation means in order to guide the air inside and outside the shoe such that it flows along a surface of the ventilation means; and a buoyancy means that is freely movable in the vertical direction between the ventilation means and the ventilation guide means. According to the present device, the buoyancy means falls from a ventilation guide hole that is formed in a guide body of the ventilation guide means when the ventilation means is not immersed in water. As such, circulation and ventilation inside and outside the shoe can be freely performed in an environment in which water outside the shoe cannot penetrate the shoe.

1 . A ventilation mechanism provided in a shoe, the ventilation mechanism comprising: a ventilation means  100  that is directed toward the top of one side of a shoe; a ventilation guide means  200  that is provided at the top of the ventilation means  100  to guide air inside and outside the shoe to flow along the surface of the ventilation means  100 ; and a buoyancy means  300  that is freely movable in the vertical direction between the ventilation means  100  and the ventilation guide means  200  such that the flow of air is blocked by the buoyancy. 
     
     
         2 . The ventilation mechanism of  claim 1 , further comprising a receiving portion  110 , which is formed on one end of the ventilation means  100  and in close contact with the inside of the shoe, and a compression portion  120  which is formed on the other end and compresses the outside of the shoe together with the receiving portion  110 . 
     
     
         3 . The ventilation mechanism of  claim 2 , further comprising a desiccating agent  140  provided inside the ventilation means  100 . 
     
     
         4 . The ventilation mechanism of  claim 1 , wherein the ventilation guide means  200  comprises a guide body  210 , in which one or more ventilation guide holes  211  are formed at a position corresponding to where the buoyancy means  300  is moved, and a cover  220  which is provided at the top of the guide body  210 . 
     
     
         5 . The ventilation mechanism of  claim 4 , wherein the cover  220  is made of an elastic material. 
     
     
         6 . The ventilation mechanism of  claim 1 , wherein the height of the inside of the buoyancy means  300  is greater than the size of a gap between the ventilation means  100  and the ventilation guide means  200 .