초록
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The invention relates to a dispenser pump (1), for the non-dropping, dosed dispensing of liquid to pasty products from containers, for example, from bottles, canisters, or tubes, comprising a pump lower section (6) with a suction opening (4) and a pump upper section (8) with a moving lid (10), for sucking up the product through the suction opening (4) of the pump lower section (6) into a suction chamber (14) and to dispense the product from said suction chamber (14), through a dispensing channel (3) with an application opening (24). According to the inve...
The invention relates to a dispenser pump (1), for the non-dropping, dosed dispensing of liquid to pasty products from containers, for example, from bottles, canisters, or tubes, comprising a pump lower section (6) with a suction opening (4) and a pump upper section (8) with a moving lid (10), for sucking up the product through the suction opening (4) of the pump lower section (6) into a suction chamber (14) and to dispense the product from said suction chamber (14), through a dispensing channel (3) with an application opening (24). According to the invention, a constructive simplification may be achieved, whereby the lower end of the suction chamber (14), arranged beneath the lid (10), is embodied by a floating elastic disc valve (7) which, on alternate axial displacement of the lid (10), opens and closes the lower opening (2) of the dispensing channel section (3′), due to arching of the mid-section thereof and conversely, by deformation of the outer boundary region (25) thereof, opens and closes the suction opening (4) of the pump lower section (6).
대표
청구항
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The invention claimed is: 1. Dispenser pump (1, 1′, 1″, 1′″) for the drip-free dispensing of metered amounts of liquid to paste-like products from containers such as bottles (26), canisters, or tubes, consisting of a lower pump part (6, 6′, 6″), which is equipped with a suction opening (4) and is designed to be fastened in the opening of a container (5), where the suction opening (4) is brought into contact with the product by means of a tube (21); and an upper pump part (8, 8′, 8″) designed to dra...
The invention claimed is: 1. Dispenser pump (1, 1′, 1″, 1′″) for the drip-free dispensing of metered amounts of liquid to paste-like products from containers such as bottles (26), canisters, or tubes, consisting of a lower pump part (6, 6′, 6″), which is equipped with a suction opening (4) and is designed to be fastened in the opening of a container (5), where the suction opening (4) is brought into contact with the product by means of a tube (21); and an upper pump part (8, 8′, 8″) designed to draw the product through the suction opening (4) of the lower pump part (6) into a suction chamber (14, 14′, 14″) that has a changeable volume via a movable hood (10) or in the manner of a piston pump and to discharge the product from this suction chamber (14, 14′, 14″) through a discharge channel (3) with an applicator opening (24), wherein a one-piece, elastic valve disk (7), formed without through-openings , lies flat and unfastened on the suction opening (4) of the upper pump part (6, 6′, 6″) and thus forms the bottom end of the suction chamber (14, 14′, 14″) and provides a double function of an inlet valve and an outlet valve for the suction chamber; the bottom opening (2) of lower discharge channel part (3′) extends all the way down to the center of the valve disk (7); and wherein the center part of the valve disk (7) bulges up and down due to pressure changes in the suction chamber due to volume changes of the pressure chamber so that the disk alternately opens and closes the centrally located bottom opening (2) of the discharge channel part (3), whereas conversely the outer edge area (25) of the disk undergoes deformation simultaneously to close and open the suction opening (4) of the lower pump part (6, 6′, 6″). 2. Dispenser pump (1, 1′, 1″, 1′″) according to claim 1, wherein the elastic valve disk (7) is made out of a thermoplastic elastomer. 3. Dispenser pump (1, 1′, 1″, 1′″) according to claim 1, wherein the elastic valve disk (7) is made out of rubber. 4. Dispenser pump (1, 1′, 1″, 1′″) according to claim 1, wherein the elastic valve disk (7) is designed with bellows-like corrugations (22) in its outer edge area (25). 5. Dispenser pump (1, 1′, 1″, 1′″) according to claim 1, wherein a section of the upper discharge channel part (3″) is angled, so that the applicator opening (24) can extend laterally out from the upper pump part (8, 8′, 8″). 6. Dispenser pump (1, 1′) according to claim 1, wherein the upper pump part (8) is connected to the lower pump part (6) by the container (26), the lower pump part (6) is pressed into the container opening (5) to form a seal, the upper pump art (8) is connected to the container (26) by a force-fit or screw connection; the discharge channel (3) is a discharge tube (3), which is molded permanently into the upper pump part (8); and above the upper angled discharge channel part (3″), an axially deformable hood (10), made of a thermoplastic elastomer, is attached to an upper edge (9) of the upper pump part (8) to form a seal. 7. Dispenser pump (1, 1′) according to claim 6, wherein a stop (13) is provided on the upper inside surface of the hood (10), above the angled dispenser channel part (3″), to limit the axial displacement of the hood (10) toward the angled discharge channel part (3″). 8. Dispenser pump (1) according to claim 6, wherein an axially movable safety cap (18) is mounted on the upper pump part (8), where the movement of the cap in the outward direction is limited by ring beads (29, 29′). 9. Dispenser pump (1′) according to claim 6, wherein the upper pump part (8) is connected by a hinge (11) to a swinging cover (12). 10. Dispenser pump (1″, 1′″) according to claim 1, wherein the upper pump part (8′, 8″) is designed with freedom of axial movement with respect to the lower pump part (6, 6″), which surrounds the lower area of the upper pump part (8′, 8″), so that the upper discharge channel part (3″) and the hood (10′, 10″), both of which are components of the upper pump part (8′, 8″), are also free to move axially, the lower discharge channel part (3′), which is a component of the lower pump part (6′, 6″), remains rigidly connected to the container and thus remains stationary together with the lower pump part when the pump is in use. 11. Dispenser pump (1″, 1′″) according to claim 10, wherein the suction chamber (14′, 14″) is designed in the manner of a piston pump as an annular space with a ring piston (32, 42), where the stationary annular space surrounds in circular fashion the lower discharge channel part (3′), wherein the ring piston (32, 42) is connected to the upper discharge channel part (3″) and is free to slide back and forth inside the annular space over the lower discharge channel part (3′). 12. Dispenser pump (1″, 1′″) according to claim 10, wherein a restoring spring (33, 43), which is supported against the lower pump part (6′, 6″), is provided inside the upper pump part (8′, 8″) to return the axially movable upper pump part (8′, 8″) to its starting position upon completion of the dispensing process. 13. Dispenser pump (1″) according to claim 12, wherein the restoring spring (33) is installed inside the discharge channel (3). 14. Dispenser pump (1′″) according to claim 12, wherein the restoring spring (43) is installed outside the discharge channel (3) and the suction chamber (51).