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A trigger-type sprayer according to the present invention sucks up, pressurizes and sprays a liquid contained in a container having a mouth portion. The sprayer is provided with a housing attached to the mouth portion of the container, a trigger rockably attached to one end portion of the housing, a

A trigger-type sprayer according to the present invention sucks up, pressurizes and sprays a liquid contained in a container having a mouth portion. The sprayer is provided with a housing attached to the mouth portion of the container, a trigger rockably attached to one end portion of the housing, a nozzle formed on the trigger and having an orifice, a cylinder supported at the middle portion on the housing and capable of facing the orifice, a suction tube attached to the other end portion of the cylinder and connecting the interior of the cylinder and that of the container, a piston one end of which is connected to the nozzle and the other end of which is located in the cylinder, the piston slidably touching the inner surface of the cylinder, a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the cylinder and the piston. The housing, trigger, nozzle, cylinder and suction tube are integrally formed.

대표청구항 ▼

1. A trigger-type sprayer which sucks up, pressurizes and sprays a liquid contained in a container having a mouth portion, the sprayer comprising: a housing attached to the mouth portion of the container; a trigger rockably attached to one end portion of the housing and integrally formed with th

1. A trigger-type sprayer which sucks up, pressurizes and sprays a liquid contained in a container having a mouth portion, the sprayer comprising: a housing attached to the mouth portion of the container; a trigger rockably attached to one end portion of the housing and integrally formed with the housing in one piece; a nozzle formed on the trigger, said nozzle being integrally formed with the trigger in one piece and having an orifice; a cylinder supported at the middle portion on the housing, said cylinder being integrally formed with the housing in one piece and having opposite end portions, one end portion being capable of facing the orifice; a suction tube attached to the other end portion of the cylinder and connecting the interior of the cylinder with the interior of the container; a hollow piston one end of which is connected to the nozzle and the other end of which is slidably located in the cylinder, said piston being in slidable contact with the inner surface of the cylinder; and valve means adapted to close and open the nozzle and the suction tube, respectively, when the trigger is rocked in one direction relative to the housing, and to open and close the nozzle and the suction tube when the trigger is rocked in the other direction relative to the housing. 2. The trigger-type sprayer according to claim 1, wherein said trigger is rockably attached to the housing by means of a hinge, and said nozzle is rockably attached to the trigger by means of another hinge. 3. The trigger-type sprayer according to claim 2, wherein said one end of the piston is fixed to the nozzle, and the other end of the piston has a through hole opening into the cylinder. 4. The trigger-type sprayer according to claim 3, wherein said valve means includes a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the cylinder and the piston. 5. The trigger-type sprayer according to claim 4, wherein said primary and secondary valves are separately formed. 6. The trigger-type sprayer according to claim 5, wherein said secondary valve includes a secondary valve plug capable of blocking said through hole, and a second urging member in the piston for urging the secondary valve plug in a direction such that the secondary valve plug blocks the through hole. 7. The trigger-type sprayer according to claim 6, wherein said secondary valve plug and said second urging member are integrally formed as one piece. 8. The trigger-type sprayer according to claim 5, wherein said primary valve includes a primary valve plug capable of blocking said suction tube, and a first urging member in the cylinder for urging the primary valve plug in a direction such that the primary valve plug blocks the suction tube. 9. The trigger-type sprayer according to claim 8, wherein said primary valve plug and said first urging member are integrally formed as one piece. 10. The trigger-type sprayer according to claim 2, wherein said piston includes a first piston portion one end of which is connected to the nozzle, and a second piston portion one end portion of which is inserted in the first piston portion and the other end portion of which is in sliding contact with the inner surface of the cylinder. 11. The trigger-type sprayer according to claim 10, wherein said one end portion of the first piston portion is open, and a valve seat is formed at said one end portion of the second piston portion. 12. The trigger-type sprayer according to claim 11, wherein said valve means includes a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the second piston portion and the nozzle. 13. The trigger-type sprayer according to claim 12, wherein said primary and secondary valves are separately formed. 14. The trigger-type sprayer according to claim 13, wherein said secondary valve is attached to the one end portion of the first piston portion, and includes a secondary valve plug capable of blocking the valve seat and a second urging member for urging the secondary valve plug in a direction such that the secondary valve plug comes closely into contact with the valve seat. 15. The trigger-type sprayer according to claim 14, wherein said secondary valve is formed as one piece integrally with the first piston portion. 16. A trigger-type sprayer comprising: a container having a substantially vertical lateral face, and a mouth portion attached to said substantially vertical lateral face, said mouth portion extending in a substantially horizontal direction; and a pump mechanism which is attached to the container, and sucks up, pressurizes and sprays a liquid contained in the container, said pump mechanism including: a housing attached to the mouth portion of the container, a trigger rockably attached to one end portion of the housing and integrally formed with the housing in one piece, a nozzle formed on the trigger, said nozzle being integrally formed with the trigger in one piece and having an orifice, a cylinder supported at the middle portion of the housing, said cylinder being integrally formed with the housing in one piece and having opposite end portions, one end portion being capable of facing the orifice, a suction tube attached to the other end portion of the cylinder and connecting the interior of the cylinder with the interior of the container, a piston one end of which is connected to the nozzle and the other end of which is slidably located in the cylinder, said piston being in sliding contact with the inner surface of the cylinder, and valve means adapted to close and open the nozzle and the suction tube, respectively, when the trigger is rocked in one direction relative to the housing, and to open and close the nozzle and the suction tube when the trigger is rocked in the other direction relative to the housing. 17. The trigger-type sprayer according to claim 16, wherein said trigger is rockably attached to the housing by means of a hinge, and said nozzle is rockably attached to the trigger by means of another hinge. 18. The trigger-type sprayer according to claim 17, wherein said one end of the piston is fixed to the nozzle, and the other end of the piston has a through hole opening into the cylinder. 19. The trigger-type sprayer according to claim 18, wherein said valve means includes a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the cylinder and the piston. 20. The trigger-type sprayer according to claim 19, wherein said primary and secondary valves are separately formed. 21. The trigger-type sprayer according to claim 5, wherein said secondary valve includes a secondary valve plug capable of blocking said through hole, and a second urging member in the piston for urging the secondary valve plug in a direction such that the secondary valve plug blocks the through hole. 22. The trigger-type sprayer according to claim 21, wherein said secondary valve plug and said second urging member are integrally formed as one piece. 23. The trigger-type sprayer according to claim 20, wherein said primary valve includes a primary valve plug capable of blocking said suction tube, and a first urging member in the cylinder for urging the primary valve plug in a direction such that the primary valve plug blocks the suction tube. 24. The trigger-type sprayer according to claim 23, wherein said primary valve plug and said first urging member are integrally formed as one piece. 25. The trigger-type sprayer according to claim 17, wherein said piston includes a first piston portion one end of which is connected to the nozzle, and a second piston portion one end portion of which is inserted in the first piston portion and the other end portion of which is in sliding contact with the inner surface of the cylinder. 26. The trigger-type sprayer according to claim 25, wherein said one end portion of the first piston portion is open, and a valve seat is formed at said one end portion of the second piston portion. 27. The trigger-type sprayer according to claim 26, wherein said valve means includes a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the second piston portion and the nozzle. 28. The trigger-type sprayer according to claim 27, wherein said primary and secondary valves are separately formed. 29. The trigger-type sprayer according to claim 28, wherein said secondary valve is attached to the one end portion of the first piston portion, and includes a secondary valve plug capable of blocking the valve seat and a second urging member for urging the secondary valve plug in a direction such that the secondary valve plug comes closely into contact with the valve seat. 30. The trigger-type sprayer according to claim 29, wherein said secondary valve is formed integrally with the first piston portion as one piece. 31. The trigger-type sprayer according to claim 1, wherein said nozzle is rockably attached to the trigger. 32. The trigger-type sprayer according to claim 16, wherein said nozzle is rockably attached to the trigger.