Abstract:
A drainage mop has a handle unit and a drainage unit. A rotary unit is disposed between the handle unit and the drainage unit so that the handle unit can be bent with respect to the drainage unit. In bending state, the rotary unit drives a driven unit so that the water absorbing unit of the drainage unit is squeeze radially to drain water out. Thus, in draining or cleaning, the operations of the water absorbing unit can be executed easily and conveniently.

Description:
FIELD OF THE INVENTION 
     The present invention relates to drainage mops, and particularly to a drainage mop, wherein a rotary unit is positioned and connected to a handle unit and a drainage unit so that when the handle unit is bent relative to the drainage unit, a rotary unit will pull a driven unit so that water of the water absorbing unit is drained out. 
     BACKGROUND OF THE INVENTION 
     In conventional drainage mop, when water saturates in a sponge mop, water in the water absorbing unit is squeeze out for using further. Therefore when water is drained out, the user must bend his (or her) waist and then lift the mop by hands. Then the user squeezes the mop laboriously. When the water absorbing unit is too dirty, the mop is sunk into the water and is pulled several times. Although mops with longer handles are used, to drain water from the handles still needs more force. When the mop is lifted from the ground for draining water. The position of the hand is high and is distant from the water absorbing unit and thus more strength is necessary. Moreover, the new designs about the mops are aimed to change the positions of handles and pull rods. No prior art is aimed to improve above mentioned defect. 
     SUMMARY OF THE INVENTION 
     Accordingly, t he primary object of the present invention is to provide a drainage mop. The drainage mop comprises a handle unit having a handle portion and a free end; a press block being placed near an outer wall of the handle unit near a distal end of the handle portion, a water absorbing unit for absorbing water; a drainage unit having a sleeve; the sleeve having a first end and a second end which are arranged oppositely; the first end of the sleeve being adhered to a free end of the handle unit; a pair of wings extending downwards from the second end of the sleeve; free ends of the wings being installed with water absorbing unit; a rotary unit installed between the handle portion of the handle unit and the sleeve of the drainage unit so that the free end of the handle unit being capable of separating from or adhering to a first end of the sleeve; and a driven unit installed between the handle portion of the handle unit and the drainage unit; the driven unit being installed with the water absorbing unit; when a downward pressure is applied to the handle portion of the handle unit, the press block of the handle unit drives the rotary unit and the position of the driven unit is controllable so that the water absorbing unit moves upwards to enter into the wings of the drainage unit and the water absorbing unit is compressed to drain water out. 
     The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the present invention. 
     FIG. 2 is a partial enlarged perspective view of FIG.  1 . 
     FIG. 3 is a cross section view along line  3 — 3  of FIG.  2 . 
     FIG. 4 is a rear view of FIG.  2 . 
     FIG. 5 is a perspective view about the positioning means of the represent invention. 
     FIG. 6 is a perspective view showing the bending operation of the present invention. 
     FIG. 7 is a left side view of FIG.  6 . 
     FIG. 8 is a partial cross section view of another preferred embodiment of the present invention. 
     FIGS. 9 and 10 are schematic views showing that the present invention is placed on a barrier. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to FIGS. 1 to  3 , the drainage mop of the present invention is illustrated. The drainage mop includes a handle unit  10 , a drainage unit  20 , a positioning unit  30 , a rotary unit  40 , and a driven unit  50 . 
     The handle unit  10  has long tubular handle portion  11 . A connecting tube  12  is connected at one end of the handle portion  11  and extends downwards. The connecting tube  12  has a connecting end  13  which is tightly connected to one end of the handle portion  11 . A free end  14  extends downwards from the connecting end  13 . An end surface of the connecting end  13  is a tapered concave hole  15 . An outer wall of the connecting tube  12  has a press block  16 . A free end of the press block  16  has an opened groove  17 . Preferably, the connecting tube  12  is integrally connected to the handle portion  11 . 
     The drainage unit  20  has a sleeve  21 , a water absorbing unit  22  and a supporting element  23 . The sleeve  21  has a first end  24  and a second end  25  which are oppositely arranged. The first end  24  has a tapered head  26  for being embedded into the tapered concave hole  15  of the connecting tube  12  so that the first end  24  of the sleeve  21  is connected and adhered to the free end  14  of the connecting tube  12 . As a result, the handle unit  10  and the drainage unit  20  are closed along the same axial line. 
     The water absorbing unit  22  is made by sponge or rubber with preferred water absorbing ability for cleaning dirt on the ground. The water absorbing unit  22  may have various shapes. 
     The supporting element  23  has a neck  27  connected to the second end  25  of the sleeve  21 . Preferably, a stud serves to lock the neck  27  to the second end  25  of the sleeve  21 . A pair of spaced wings  28  extend downwards from a horizontal surface of the neck  27 . Each water absorbing unit  22  has two legs  29 . Each leg  29  has a hole for being inserted by a supporting shaft  211 . The extrusion and water absorbing elements  212 ,  213  (for example, rollers) are rotationably combined to the supporting shaft  211 . Each supporting shaft  211  is sleeved by three rollers  212 ,  213  so that they rotate around the supporting shaft  211 . When the connecting tube  12  and sleeve  21  are in closing position, the distance D 1  between the rollers  212  and  213  are smaller than the diameter of the water absorbing unit  22 . 
     The positioning unit  30  has a buckling reed  31  and a rod  32 . The rod have one end being connected to the buckling reed  31  and have another end connected to the free end  14  of the connecting tube  12  so that the buckling reed  31  is controlled by the connecting tube  12  to be connected to or separated from the sleeve  21 , as shown in FIG.  5 . The buckling reed  31  has a longitudinal notch  33 . By this notch  33 , the buckling reed  31  can coaxially clamp an outer portion of the sleeve  21  so as to cause the buckling reed  31  and the notch  33  at the same axial line. When the handle unit  10  is bent, the rotary unit  40  separates from the sleeve  21  by using the notch  33 . 
     With reference to FIGS. 2,  3  and  4 , the rotary unit  40  has a stub  41  and a protrusion  42 . A connecting end of the stub  41  is connected to an outer wall of the connecting tube  12 . The connecting end of the protrusion  42  is connected to the first end  24  of the sleeve  21 . The stub  41  can be inserted into stub  41 . The protrusion  42  has a hole corresponding to a hole of the protrusion  42 . Thereby, a supporting bar  43  can insert into the holes so that the rotary unit  40  can rotate around the supporting bar  43 . 
     The driven unit  50  has a press rod  51  and a pair of parallel linkages  52 . The press rod  51  has a connecting piece  53  which can be embedded into a recess  17  of the press block  16  so that the connecting piece  53  is interacted by the press block  16  so that a gap is retained between the recess  17  and the connecting piece  53 . Two connecting arms  54  are connected and vertically extend between the first connecting end  55  to the second connecting end  56 . Each connecting arm  54  has a hole for being inserted by the supporting bar  43  of the rotary unit  40  and the supporting bar  43  is used as a fulcrum. 
     The linkage  52  has a first end  57  and a second end  58  which are at opposite end. A shaft  59  can be inserted into the first end  57  of the linkage  52  and the second connecting end  56  of the connecting arm  54  so that the linkage  52  is connected to and is rotatable to the connecting arm  54 . The second end  58  of the linkage  52  passes through the slot  215  of the supporting element  23  so as to connect to the water absorbing unit  22 . Preferably, a retainer  511  is connected to the second end  58  of the linkage  52  and a lower side of the retainer  511  is firmly secured to a top of the water absorbing unit  22  for enhancing the connection of the water absorbing unit  22  and the linkage  52 . 
     Therefore when a press is applied to the handle portion  11  of the handle unit  10  with a direction “X” shown in FIG. 1, in the handle unit  10 , by the rotary unit  40  and the driven unit  50 , the water absorbing unit  22  rotates in a position shown in FIG.  6 . 
     Referring to FIGS. 6 and 7, a perspective view and a lateral view showing that the handle unit  10  is bent with respect to the drainage unit  20 . When a pressure in “X” direction is applied to the handle portion  11 , the supporting bar  43  of the handle portion  11  moves downwards so that the free end  14  of the connecting tube  12  separates from the first end  24  of the sleeve  21  to be in a bending condition. Then, buckling reed  31  of the positioning means  30  moves upwards with the connecting tube  12  to enforce the buckling reed  31  separates from the sleeve  21 . The handle portion  11  will drive the press block  16  to move. The press block  16  applies a force to the connecting piece  53  of the press rod  51 . The connecting piece  53  will cause the connecting arm  54  to have a fulcrum of the supporting arm  43 . Thereby, the second connecting ends  56  of the connecting arms  54  move upwards. When the second connecting ends  56  move upwards, the pair of linkages  52  are driven to move upwards. The linkages  52  will pull the water absorbing unit  22  upwards so that the water absorbing unit  22  are radially compressed by the rollers  212 ,  213  to have a smaller diameter. In fact, the water absorbing unit  22  is compressed by an extrusion, force as indicated by the arrow “Y” in FIG. 7 so that water will drain out. 
     When water drains out, a pull force is applied to the handle portion  11  so that the free end  14  of the connecting tube  12  is near the first end  24  of the sleeve  21  so as to be in a close state. Thereby, the handle unit  10  can restore to the original position, as shown in FIG. 1 for working. Thereby, the rotary unit  40  can bend the handle unit  10  with respect to the drainage unit  20 . Furthermore, the water absorbing unit  22  is pulled by the driven unit  50  so as to be compressed radially. Thus, force is saved. 
     Referring to FIG. 8, the second embodiment of the present invention is illustrated. The free end  14  of the connecting tube  12  has a closed flat bottom  18  which can be adhered to or separated from the closed flat bottom  216  of the sleeve  21 . 
     With reference to FIGS. 9 and 10, the schematic views about cleaning and drainage of the drainage mop of the present invention is illustrated. The drainage mop cleans and drains through a barrier  60 . The barrier  60  (for example, a stool or a water barrier) is installed with a door  61 . In cleaning, the door  61  can be opened and the drainage mop is placed into the barrier  60 . The handle unit  10  is bent several times so that the dirt on the water absorbing unit  22  can be removed. In draining, the drainage mop is placed on the door  61  and the handle unit  10  is bent so that water in the water absorbing unit  22  is drained to flow into the barrier  60 . 
     With reference to FIGS. 2 and 3, preferably, the drainage mop of the present invention has a hand rod  70  which has a pull portion  71  and a connecting portion  72 . The connecting portion  72  is connected to the second connecting end  56  of the connecting arm  54 . Moreover, the connecting portion  72  of the hand rod  70  is integrally formed with the second connecting end  56  of the connecting arm  54 . 
     When a pull force as indicated by “Z”, of FIG. 3 is applied to the pull portion  71  of the handle  70 , the pull portion  71  will pull the linkages  52  so that the water absorbing unit  22  moves upwards. The wings  28  of the drainage unit  20  have predetermined shape so that the water absorbing unit  22  are protruded radially to achieve the object of drainage. Therefore in the drainage mop of the present invention, the drainage of water absorbing unit  22  can be performed by bending or pulling manually. Thus, the operation is convenient. 
     The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.