Patent Publication Number: US-2007107823-A1

Title: Enforcement structure for valve of tires

Description:
FIELD OF THE INVENTION  
      The present invention relates to an enforcement structure for a valve of tires and more particularly, to a reinforcement pad connected to an enlarged base of the valve so as to prevent the tube from being cut by the valve.  
     BACKGROUND OF THE INVENTION  
      A conventional tire includes tubeless tires or the tires with tubes, both of which include a valve through which air is introduced into the tires or the tubes. For most of the bicycle tires includes tubes therein and the valve is fixed to the tube. The latest valves are focused on compact and are made with thin wall. The thickness of the tubes are also changed according to the change of the valves from 0.9 mm to 0.45 mm. However, the thickness of the tube below 0.7 mm brings the tube out from the safety range so that it is important to ensure that the tube is not cut by the metal-made valve at the connection area of the valve and the tube. It is experienced that the tube is worn out or cut through by the valve after the tube is inflate and this is because the thin tube cannot bear the high pressure on the small contact area with the valve.  
      The present invention intends to provide a reinforcement structure for a valve of tires wherein a reinforcement pad is connected to the valve and encloses the base of the valve and the pad is directly connection to the outside of the tube so that even a thin tube can be efficiently avoid from leakage.  
     SUMMARY OF THE INVENTION  
      The present invention relates to a reinforcement structure for a valve of tires wherein the tire includes a tube which has a hole defined through a wall thereof and a valve has an enlarged base which is connected to the hole. A reinforcement pad is mounted on the base and connected to the tube. A length of the reinforcement pad is equal to or larger than twice of a width of the reinforcement pad.  
      The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  shows the reinforcement pad is mounted on the base of the valve and attached on the tube;  
       FIG. 2  is a perspective view to show the tube with the reinforcement structure of valve of the present invention;  
       FIG. 3  shows the relationship of the length and the width of the reinforcement pad, and  
       FIG. 4  is a cross sectional view to show the reinforcement structure for the valve of tires. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      Referring to FIGS.  1  to  4 , the reinforcement valve structure for tires which include tubes  10  received therein and each tube  10  is an enclosed tube and has a hole  11  defined through a wall of the tube  10 . A metal valve  12  has an enlarged base  121  which is connected to the hole  11  and a reinforcement pad  13  is mounted on the base  121  and fixedly connected to the tube  10 . The reinforcement pad  13  is integrally formed on the base  121  when the valve  12  is made so that when the valve  12  is connected to the tube  10 , the reinforcement pad  13  is fixedly connected to the tube  10  such that the connection area between the base  121  and the tube  10  is reinforced and the valve  12  is quickly connected to the tube  10 .  
      The reinforcement pad  13  is made by rubber and a length of the reinforcement pad  13  is equal to or larger than twice of a width of the reinforcement pad  13 . The reinforcement pad  13  ensures that no leakage between joint position of the valve  12  and the tube  10 . The rubber made reinforcement pad  13  has good structural strength so that if protect the tube  10  from being cut by the valve  12 .  
      While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.