Dual flush device for toilet water tank

Abstract

The present invention is related to a dual flush device for toilet water tank. A manually-operated press handle, in which a first switch-bar and a second switch-bar are intercalated on, is installed on a side-wall of the water tank. The switch-bar has a hollow bed, the tube of the hollow bed has a pivotal hole of the holder. The front edge of a bent-arm conjugates with an axial hole of the second switch-bar, the other end of the bent-arm has a chain which is fixed in a central hole of a moving element of a water-drainer. The round axis of the holder conjugates with a conduct hole of a gliding plate; and the screw nut is fixed by a stud to hold a float-ball under water. The water-drainer has a draining part. Inside the draining part there is a moving element. The moving element has a central hole, and a flush valve at the bottom, and a float-ball held in inner space. Below the draining part, there is provided an outer screw-thread, on the outer screw-thread there is mounted a base. In view of the above disclosure, it is the primary intention of the invention to successfully control the quantity of released water by dual flush. This device is not only a simple structure but also easily using at the user's will.

1 . A dual flush device for toilet water tank, comprising:
 a first switch-bar, which has a dent located inside; a pivot that has a hollow roundness at the center of the dent, a notch is at the upper side of the pivot; a retaining blockade is located in the dent and connected to the pivot;   a second switch-bar, that is mounted under the first switch-bar, wherein an axial stick which has an axial hole inside, is located at the central part of one end;   a hollow bed is mounted on the first switch-bar, which has a protruding tube; the tube is hollow, has a flange at the lower part, and there is an indentation is formed between flange;   a holder, which is located on the hollow bed, comprising a pivotal hole at one end of a plate, and a protruding grading round-axis at the other end of the plate;   an L-shaped bent arm has a front edge that is conjugated with the axial hole of the second switch-bar and at the other end has a locking hole to fix a lift-chain which connects to a central hole of a moving element of a water-drainer;   a gliding plate, located on the holder, has a grading contact side at one end, and has a screw nut as well as a conduct-hole at the other end, the conduct-hole is on the round-axis of the holder, the screw nut is fixed by a stud to hold a float ball under water;   a water-drainer having a base and a draining part; inside the draining part there is a moving element, the moving element has a central hole and has a flush valve at the bottom, and a float ball held at inner space; the draining part has slot, below the draining part has a outer screw thread, on the outer screw thread has a base.   
     
     
         2 . The dual flush device for toilet water tank as defined in  claim 1 , wherein the axial stick of the second switch-bar is put into the roundness of the pivot of the first switch-bar. 
     
     
         3 . The dual flush device for toilet water tank as defined in  claim 1 , wherein the pivot of the first switch-bar is in the tube of the hollow bed, the indentation of the hollow bed is conjugated with the retaining blockade of the first switch-bar and forms an aperture between the indentation and the retaining blockade. 
     
     
         4 . The dual flush device for toilet water tank as defined in  claim 1 , wherein there is formed an aperture between the front edge of the bent arm and the notch of the first switch-bar. 
     
     
         5 . The dual flush device for toilet water tank as defined in  claim 1 , wherein an outlet hole is in the base of the water-drainer, outside of the outlet hole is a flange which is conjugated with the flush valve. 
     
     
         6 . The dual flush device for toilet water tank as defined in  claim 1 , wherein one end of the float ball of the water-drainer has a plate which has an engaging-surface on it. 
     
     
         7 . A dual flush device for toilet water tank, comprising:
 a press button switch comprises a first depressor and a second depressor; the first depressor and the second depressor are fixed in the inner space of a box, a movable driving-rod is set under them; in the middle of box there is provided a round hole; a spring is set on a mandrel of the driving-rod; a fixation bed has a hollow outer screw thread, the mandrel of the driving-rod along with the spring are fixed into the hollow space of the outer screw thread, so that the mandrel and a base sheet are held tightly together;   a link body is located below the base sheet; the link body has a turntable with a round hole located at the center, at an opposite side has a turn-rod and a notch; a round tank is set under the turntable, and is fixed on the central hole of the moving element of water-drainer by a rope; a holder is under the turntable; at the other end of the holder is a round-axis, and a gliding plate is fixed on the round-axis; at one end of the gliding plate forms a protruding inlet-end, and at the other end forms a locking hole and conduct-hole;   a water-drainer, which has a draining part; inside the draining part has a moving element, the moving element has a central hole and has a flush valve at the bottom, and a float ball held at inner space; the draining part has slot, below the draining part has a outer screw thread, on the outer screw thread has a base.   
     
     
         8 . The dual flush device for toilet water tank as defined in  claim 7 , wherein a retaining blockade is located under the first depressor, but no retaining blockade is located under the second depressor. 
     
     
         9 . The dual flush device for toilet water tank as defined in  claim 7 , wherein the round hole of the turntable is used to conjugate with a pivot of the holder. 
     
     
         10 . The dual flush device for toilet water tank as defined in  claim 7 , wherein the conduct-hole is plugged in the round-axis of the holder, the locking hole is fixed with a stud to hold a float-ball under water. 
     
     
         11 . The dual flush device for toilet water tank as defined in  claim 7 , wherein an outlet hole is in the base of the water-drainer, outside of the outlet hole is a flange which is conjugated with the flush valve. 
     
     
         12 . The dual flush device for toilet water tank as defined in  claim 7 , wherein one end of the float ball of the water-drainer has a plate which has an engaging-surface on it.