Patent Publication Number: US-2013248011-A1

Title: Faucet control valve

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates to a faucet control valve and, more particularly, to a faucet control valve for simplifying assembly, to thereby effectively provide the purpose of conveniently assembling, simplifying the process and reducing material costs. 
     2. Description of Related Art 
     The structure of a control valve  12  of a general faucet (as shown in  FIG. 1 ), which is consist of an upper case  121 , a lever  122 , a holder  123 , an upper valve sheet  124 , a lower valve sheet  125  and a base  126 , is used for installing inside the faucet body  11  (as shown in  FIG. 2 ) for controlling water flowing in and out. The assembly inside the faucet is mainly installing the control valve  12  inside the body  11 , the lever  122  on the top of the control valve  12  is connected to a handle  13  for operating the control of water flowing in and out. The bottom of the control valve  12  is attached on a valve body seat  14 . At least a water inlet hole  142 , a water outlet hole  145  and at least a positioning hole  144  are set on the top side of the valve body seat  14 . A lateral hole  146  is set on the middle section of the valve body seat  15  and connected to the water outlet hole  145 , and an outlet  143  is set on the outlet end of the lateral hole  146 . An internal thread section  147  is set on the lower end of the water inlet hole  142  of the valve body seat  14  for an inlet tube  15  screwing on. Basically, there are no problems in using the abovementioned structure, but the production of the valve body seat  14  is truly troubled the industry. Since the volume of the valve body seat  14  is large, it consumes a large amount of copper and is produced through complicated processes, such as cutting, tapping and drilling. In the process, if there is any error occurred in one of the holes, the valve body seat  14  becomes a waste. In Recent years, especially under the condition of rising raw materials price, defective products produced in manufacturing process have become a heavy burden on manufacturing costs. The widely used control valve  12  structure cannot be connected to the inlet tube  15  if not use the valve body seat  14  for supporting the control valve  12 , the industry is deeply troubled by rising material costs and complicated machining process. 
     SUMMARY OF THE INVENTION 
     In view of the drawbacks of the conventional structure, the inventor provides a faucet control valve, namely, the object of the invention is to provide a control valve structure for simplifying assembly of faucets, to thereby achieve the purpose of conveniently assembling, simplifying the process and reducing material costs. 
     To achieve the object, the faucet control valve according to the present invention is consist of an upper case, a lever, a holder, an upper valve sheet, a lower valve sheet and a base, wherein: 
     the upper case, which has an inner cavity with a downward opening, a boss is set on the top of the upper case, an aperture is set on the boss and connected to the inner cavity; 
     the lever, which has a allocated block set on its bottom, the upper section of the lever is passed through the aperture of the boss of the upper case; 
     the holder, which has a fitting hole concavely set on the top of its holder body for placing the lever inside, and a cover part is set on the bottom of the holder; 
     the upper valve sheet, which is a sheet body, is attached on the cover part of the holder, a positioning hole is set in the center of the upper valve sheet for the allocated block of the lever embedding in, and the upper valve sheet is shifted when the allocated block is moved; 
     the lower valve sheet, the top of the lower valve sheet is attached to the bottom of the upper valve sheet, and at least an inlet through hole and an outlet through hole are set on the valve sheet; 
     the base, which is fixedly combined with the upper case, the top of the base is attached to the bottom of the lower valve sheet; 
     the feature is: 
     a flat bottom part is set on the bottom of the base, at least an inlet channel and an outlet channel are set inside the base, the lower end of the inlet channel is extended down to the flat bottom part and a first water intake is set on it for inserting the end of an inlet tube, the upper end of the inlet channel is extended up to the top of the base and a first water outtake is set on it; the upper end of the outlet channel is extended up to the top of the base and a second water intake is set on it, the end of the outlet channel is extended to one side of the base and a second water outtake is set on it. 
     The above control valve, wherein an internal thread section is set near the first water intake inside the inlet channel for screwing an external thread section on the end of the inlet tube. 
     The above control valve, wherein at least an embedded gap is surrounded set on the circumference edge of the bottom of the inner cavity of the upper case. 
     The above control valve, wherein at least a convex rub is surrounded set on the circumference edge of the top of the base. 
     The above control valve, wherein a first seal ring and a second seal ring are respectively embedded below and above the location of the second water outtake on the circumference edge of the base. 
     The above control valve, wherein the second water outtake set on the end of the outlet channel is set on the flat bottom part, and an internal thread section is set near the second water outtake for an external thread section set on one end of an outlet tube, and an outlet head is set on the other end of the outlet tube. 
     The above control valve, wherein the second outtake set on the end of the outlet channel is set on one side of the base and located on the front side of the circumference of the base. 
    
    
     
       BRIEF DESCRIPTION OF THE INVENTION 
       The detail structure, the applied principle, the function and the effectiveness of the present invention can be more fully understood with reference to the following description and accompanying drawings, in which: 
         FIG. 1  is a three-dimensional exploded diagram of a conventional control valve; 
         FIG. 2  is a schematic diagram of one embodiment according to a conventional faucet; 
         FIG. 3  is a three-dimensional exploded diagram according to the present invention; 
         FIG. 4  is a three-dimensional diagram according to the present invention; 
         FIG. 5  is a schematic diagram of one embodiment according to the present invention; 
         FIG. 6  is a cross-sectional view along the cutting line I-I in  FIG. 5  according to the present invention; 
         FIG. 7  is a cross-sectional view of another embodiment according to the control valve of the present invention; and 
         FIG. 8  is a schematic diagram of the embodiment in  FIG. 7  according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The above and further objects and novel features of the invention will more fully appear from the following detailed description when the same is read in connection with the accompanying drawing. It is to be expressly understood, however, that the drawing is for purpose of illustration only and is not intended as a definition of the limits of the invention. 
     Please refer to  FIG. 3  and  FIG. 4 , the faucet control valve A of the present invention is consist of an upper case  2 , a lever  3 , a holder  4 , an upper valve sheet  5 , a lower valve sheet  6  and a base  8 , wherein: 
     the upper case  2 , which has an inner cavity  200  with a downward opening on the case  20 , at least an embedded gap  22  is surrounded set on the circumference of the bottom  23  of the inner cavity  200 , a boss  24  is set on the top of the case  20 , an aperture  21  is set on the boss  24 , and the aperture  21  is connected to the inner cavity  200 ; 
     the lever  3 , which has a allocated block  31  set on its bottom, an insertion hole  32  is horizontally set in the middle section of the lever  3 , the upper section  33  of the lever  3  is passed through the aperture  21  of the boss  24  of the upper case  2 ; 
     the holder  4 , which has a fitting hole  41  concavely set on the top of its holder body  40  for placing the lever  3  inside, a bolt hole  42  is set on the side edge of the base  40  for a bolt  43  inserting in the insertion hole  32 , and a cover part  44  is set on the bottom of the holder  4 ; 
     the upper valve sheet  5 , which is a sheet body, is attached on the cover part  44  of the holder  4 , a positioning hole  51  is set in the center of the upper valve sheet  5  for the allocated block  31  of the lever  3  embedding in, and the upper valve sheet  5  is shifted when the allocated block  31  is moved; 
     the lower valve sheet  6 , whose top  60  is attached to the bottom of the upper valve sheet  5 , and at least an inlet through hole  61  ( 62 ) and an outlet through hole  63  are set on the valve sheet  6 ; 
     the base  8 , whose top  80  is attached to the bottom of the lower valve sheet  6 , at least a convex rub  801  is surrounded set on the circumference edge of the top  80 , the convex rib  801  is embedded in the embedded gap  22  of the upper case  2  for fixedly combining the base  8  with the upper case  2 ; 
     the feature is: 
     a flat bottom part  82  is set on the bottom of the base  8 , at least an inlet channel  83  and an outlet channel  84  are set inside the base  8  (please refer to  FIG. 3 ,  FIG. 4 ,  FIG. 5  and  FIG. 6 ), the lower end of the inlet channel  83  is extended down to the flat bottom part  82  and a first water intake  831  is set on it for inserting the end  931  of an inlet tube  93 , the upper end of the inlet channel  83  is extended up to the top  80  of the base  8  and a first water outtake  832  is set on it; the upper end of the outlet channel  84  is extended up to the top  80  of the base  8  and a second water intake  841  is set on it, the end of the outlet channel  84  is extended to one side of the base  8  and a second water outtake  842  is set on it. 
     The above faucet control valve A, wherein an embedded slot  81  is surrounded set outside the hole edge of the first water outtake  832  and the second water intake  841  on the surface of the top  80  of the base  8 , the embedded slot  81  is provided for a wearing ring  7  embedded in to stop leaking of water flowing in and out. 
     The above faucet control valve A, wherein the second water outtake  842  set on the end of the outlet channel  84  is set on one side of the base  8 , and the ideal location is on the front side of the circumference of the base  8 . 
     The above inlet channel  83 , wherein an internal thread section  833  is set near the first water intake  831  for screwing an external thread section  932  on the end  931  of the inlet tube  93 . 
     The above control valve A, wherein a first seal ring C 1  and a second seal ring C 2  are respectively embedded below and above the location of the second water outtake  842  on the circumference edge of the base  8 . Wherein, the first seal ring C 1  is embedded in a first groove  821  set on the circumference of the flat bottom part  82  of the base  8 , the second seal ring C 2  is embedded in a second groove  85  set on the upper side of the second water outtake  842  of the base  8  (the second groove  85  may also be set on the circumference of the case  20  of the upper case  2 ). By the installation of the first seal ring C 1  and the second seal ring C 2 , water may not be oozed upward or downward when setting up the control valve A inside the faucet body  90  (please refer to  FIG. 5  simultaneously). 
     By the composition of the above structure, when setting up the control valve A inside the faucet body  90 , since the design of the flat bottom part  82  of the control valve A, the inlet tube  93  may be directly inserted, and the flat bottom part  82  is sealed for preventing water flowing downward. Also, the flat bottom part  82  may support the installation of the inlet tube  93 , thus, the valve body seat needed in the conventional control valve may be saved, the inconvenience in assembling the valve body seat may be reduced and the burden of material cost may be effectively decreased. 
     The above flat bottom part  82  of the present invention, wherein the lower edge is shrunk as a first limiting edge  822  with the diameter smaller than the diameter of the circumference of the base  8  of the control valve A. And, a second limiting edge  901  is set corresponding to the location of the first limiting edge  822  on the faucet body  90  for limiting the location of the control valve A installing inside the faucet body  90 . Simultaneously, at least a positioning rib  823  may be set on the circumference of the flat bottom part  82  for embedding in a corresponding positioning gap  902  inside the faucet body  90 , thus the control valve A may be accurately positioned inside the faucet body  90  (please refer to  FIG. 6 ). 
     Please refer to  FIG. 5  and  FIG. 6 , when needing water, adjusting the lever  3  to the water-outlet position, at the time, water flows into the inlet channel  83  through the inlet tube  93  and passes the inlet through hole  61  ( 62 ), water flow turns to flow into the outlet channel  84  from the outlet through hole  63 , and then flows to the outlet tube  91  from the water outtake  842  for providing water. 
     Another embodiment of the present invention is shown in  FIG. 7  and  FIG. 8 , wherein the second water outtake  842 ′ set on the end of the outlet channel  84 ′ inside the base  8 ′ of the control valve A is set on the flat bottom part  82 ′, an internal thread section  843 ′ is set on the outlet channel  84 ′ near the second water outtake  842 ′ for screwing an external thread section  911 ′ set on one end of an outlet tube  91 ′, and an outlet head  92 ′ is set on the other end of the outlet tube  91 ′. The structure is convenient for the outlet tube  91 ′ with a joint pipe installation, to thereby provide the assembly of non-casting faucet body.