Patent Publication Number: US-7216657-B2

Title: Waterproof structure of ventilating window for tent

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a ventilating window of a tent, and more specifically to a waterproof structure of a ventilating window for a tent, in which an outer rim portion is sewn and attached to the ventilating window rim portion of a body fabric together with a cover fabric, and an outline fabric of net yarn fabric is sewn and attached to the ventilation hole portion formed inside, and an inner waterproof tape is attached to the inlet of the part that is closely contacted by a sewing line of a double-side waterproof-coated double-side waterproof fabric and the cover fabric to prevent rainwater from penetrating through the sewing line part of the double-side waterproof fabric and the cover fabric, and outer waterproof tapes are attached to the inner sewing line of the body fabric and the double-side waterproof fabric and the border line of these to prevent rainwater from penetrating though the sewing line part of the body fabric and the double-side waterproof fabric, so that rainwater is prevented from penetrating through the ventilating window part of tent. 
   2. Description of the Related Art 
   The construction of a conventional ventilating window for tent is as shown in  FIGS. 1 through 4 . 
   The construction of this ventilating window comprises a ventilating window  2 ; a net yarn fabric  3  that is attached to the rim portion of the ventilating window  2  by sewing an outline fabric  4 ; a cover fabric  5  that is sewn and attached to the outside of a body fabric  1  enclosing the net yarn fabric  3  so that the bottom is opened while a space is formed outside the net yarn fabric  3 ; and a waterproof tape  6  that is attached to the sewing line part of the body fabric  1  for the waterproofing of the sewing line part of the cover fabric  5  and the body fabric  1 . 
   Below is described the action of a conventional ventilating window for tent having such a construction. 
   First, the ventilating window  2  formed on the body fabric  1  makes the air inside the tent communicate with the outside so that the inside of the tent can be maintained pleasant. 
   And, the net yarn fabric  3  that is sewn and attached to the rim portion of the ventilating window  2  through the outline fabric  4  can prevent mosquitoes or flies from flying in through the ventilating window  2 . 
   Also, the cover fabric  5  that is sewn and attached making a space outside the ventilating window  2  plays a role of intercepting rainwater or sunlight through the net yarn fabric  3 . 
   Thus, in the prior art, to waterproof the sewing line part of the cover fabric  5  and the body fabric  1 , a waterproof tape  6  is attached to the sewing line part formed on the inside of the body fabric  1 . 
   However, although rainwater does not penetrate through the sewing line part attached with the waterproof tape  6 , there is no waterproofing means equipped in the close contact part of the body fabric  1  and the cover fabric  5 , so rainwater penetrates through the close contact part, as shown in  FIGS. 3 and 4 . 
   So the rainwater that has penetrated through the close contact part of the body fabric  1  and the cover fabric  5  flows into the tent through the outline fabric  4  of the net yarn fabric  3  and the sewing line part of the body fabric  1 , eventually making a problem of rainwater staying inside the tent. 
   Especially, only the inner surface of the body fabric  1  is waterproof coated, so it can be waterproofed by attaching the waterproof tape  6 ; but the outer surface of the body fabric  1  is not waterproof coated, so a waterproof tape cannot be attached. 
   For reference, in order to attach waterproof tapes to the fabrics making up a tent, the surface of the reverse of the fabric should be waterproof coated. 
   But waterproof coating both sides of all the fabrics causes increase in the cost and the number of work processes, so it is a general practice to coat the outer surface only, namely, one side of the fabric. 
   Thus, the conventional ventilating window of tent is not equipped with a proper waterproof system, so it has a problem of causing many inconveniences on rainy days. 
   SUMMARY OF THE INVENTION 
   Therefore, it is an object of the present invention to provide a waterproof structure of a ventilating window for tent that can block the penetration of rainwater through the ventilating window part of tent. 
   In one aspect of the present invention, there is provided a tent having a ventilating window that is formed for the purpose of the ventilation of the body fabric, a net yarn fabric that is sewn and attached to the rim portion of the ventilating window through an outline fabric, and a cover fabric that is sewn and attached to the outside of the body fabric enclosing the net yarn fabric so that the bottom is opened while a space is formed outside the net yarn fabric, a waterproof structure of the ventilating window of tent characterized by comprising: a double-side waterproof fabric, which is sewn and attached to the rim portion of the ventilating window of a body fabric together with a cover fabric, and to which a net yarn fabric is sewn and attached to the rim portion of the ventilation hole portion formed inside, and both sides of which are waterproof coated so as for a waterproof tape to be adhered; an inner waterproof tape, which is attached to the inlet of the part that is closely contacted by the sewing line of the double-side waterproof fabric and the cover fabric to prevent rainwater from penetrating through the sewing line part of the double-side waterproof fabric and the cover fabric; and an outer waterproof tape, which is attached to the inner sewing line of the body fabric and the double-side waterproof fabric and the border line of these to prevent rainwater from penetrating through the sewing line part of the body fabric and the double-side waterproof fabric. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Other objects and aspects of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawings in which: 
       FIG. 1  is a perspective view showing a ventilating window formed in a conventional tent; 
       FIG. 2  is an exploded perspective view for describing the construction of a conventional ventilating window; 
       FIG. 3  is a partly cut-out front view for describing the rainwater penetration process of a conventional ventilating window; 
       FIG. 4  is a sectional view for describing the rainwater penetration process of a conventional ventilating window; 
       FIG. 5  is an exploded view for describing the construction of the ventilating window of the present invention; 
       FIG. 6  is a partly cut-out front view for describing the assembled state of the ventilating window of the present invention; and 
       FIG. 7  is a sectional view for describing the assembled state of the ventilating window of the present invention. 
   

   DESCRIPTION OF THE PREFERRED EMBODIMENT 
   Hereinafter, the present invention will be described in more detail referring to the drawings. 
   First, as shown in  FIG. 5 , the ventilating window of tent comprises a ventilating window  102  that is formed on the body fabric  101  for the purpose of ventilation, a net yarn fabric  103  that is sewn and attached to the rim part of the ventilating window  102  through an outline fabric  104 , and a cover fabric  105  that is sewn and attached to the outside of the body fabric  101  enclosing the net yarn fabric  103  so that the bottom is opened while a space is formed outside the net yarn fabric  103 . 
   In a tent of such a construction, the ventilating window of tent according to the preferred embodiment of the present invention comprises a double-side waterproof fabric  111 , which is sewn and attached to the rim portion of the ventilating window  102  of the body fabric  101  together with the cover fabric  105 , and in which the net yarn fabric  103  is sewn and attached through the outline fabric  104  to the rim portion of the ventilation hole  112  formed inside, and of which both sides are waterproof coated so as for a waterproof tape to be adhered; an inner waterproof tape  122 , which is attached to the inlet of the portion that is closely contacted by the sewing line of the double-side waterproof fabric  111  and the cover fabric  105  to prevent rainwater from penetrating through the sewing line part of the double-side waterproof fabric  111  and the cover fabric  105 ; and an outer waterproof tape  121  that is attached to the sewing line of the body fabric  101  and the double-side waterproof fabric  111  and the border line of these to prevent rainwater from penetrating through the sewing line part of the body fabric  101  and the double-side waterproof fabric  111 . 
   Below is described the action of the ventilating window of tent of such a construction according to the present invention. 
   First, both sides of the double-side waterproof fabric  111  of the present invention are waterproof coated, so it is possible to attach waterproof tapes  121  and  122  to both sides. 
   Also, the inner surface of the body fabric  101  to which the double-side waterproof fabric  111  is sewn is waterproof coated and the outer surface of it is not waterproof coated. 
   Accordingly, it is possible to attach the outer waterproof tape  121  while covering the sewing line formed on the inner surface of the body fabric  101  and the border line of the double-side waterproof fabric  111 , as shown in  FIG. 7 . 
   By the outer waterproof tape  121  attached in this manner, it is possible to perfectly block the penetration of rainwater though the sewing line part of the body fabric  101  and the double-side waterproof fabric  111 . 
   Also, the cover fabric  105  that is sewn to the body fabric  101  after being closely contacted with the outer surface of the double-side waterproof fabric  111  is waterproof coated in its inner surface and not in its outer surface. 
   Accordingly, it is possible to attach the inner waterproof tape  122  to the inlet of the part that is closely contacted by the sewing line of the double-side waterproof fabric  111  and the cover fabric  105 , as shown in  FIG. 7 . 
   By the inner waterproof tape  122  attached in this manner, it is possible to perfectly block the penetration of rainwater through the sewing line part of the double-side waterproof fabric  111  and the cover fabric  105 . 
   As describe above, since it is possible to prevent rainwater from penetrating through the sewing line part of the double-side waterproof fabric and the cover fabric that make up the ventilating window of tent, and at the same it is possible to securely block the penetration of rainwater through the sewing line of the body fabric and the double-side waterproof fabric, it is possible to improve the function as a tent by a thorough waterproof effect and obtain a reliable tent.