Content exhaust pump

Abstract

The content exhaust pump is provided which includes a pump body fastened to a container, a cylinder as a cylindrical member having opened upper and lower portions of which an outer flange is screw-coupled to an inner circumferential surface of the pump body, and a elevating device which ascends and descends on the inner circumferential surface of the cylinder by a pushing operation of a push button, in which in a lower cylinder having an inner diameter smaller than that of the cylinder at the lower portion of the cylinder, a cylindrical fixing member having a projection formed on the upper outer circumferential surface, and a dome-shaped valve suspended and fixed to the projection of the cylindrical fixing member is provided, and the dome-shaped valve is a dome-shaped flexible member of which the lower portion is opened and the upper portion is convexly projected thereof.

Claims

1. A content exhaust pump comprising: a pump body fastened to a container; a cylinder as a cylindrical member having opened upper and lower portions of which an outer flange is screw-coupled to an inner circumferential surface of the pump body; and an elevating device which ascends and descends on an inner circumferential surface of the cylinder by a pushing operation of a push button, wherein an inner annular piece located on an upper surface of the outer flange of the cylinder 20 is inwardly projected on the inner circumferential surface of the cylindrical pump body; an annular packing is inserted to a lower surface of the outer flange of the cylinder fastened to the pump body so as to be in close contact with an upper inlet of the container; and an outer side surface is suspended by a band protrusion which is formed in a cylindrical shape and projected from a center of an inner circumferential surface of the inner annular piece of the pump body, and a fixing member covering upper inner and outer surfaces of the cylinder is provided, wherein the elevating device includes: a cylindrical sealing piston which is in close contact with the inner circumferential surface of the cylinder; an operation cylinder rod coupled to an inner circumferential surface of the sealing piston; an elevating rod of which a lower end is coupled to an upper outer circumferential surface of the operation cylinder rod and an upper end is coupled to the push button; and a cylindrical spring which is provided at a lower end of a flange projected outward from a central portion of the elevating rod and an upper groove of the fixing member to be compressed and expanded by the pushing operation of the push button.

2. The content exhaust pump of claim 1, further comprising: a lower cylinder having an inner diameter smaller than that of the cylinder connected at the lower portion of the cylinder, wherein a cylindrical fixing member 51 having a projection 51a formed on an upper outer circumferential surface thereof is inserted to a boundary line between the cylinder and the lower cylinder; and a dome-shaped valve suspended and fixed to the projection of the cylindrical fixing member.

3. The content exhaust pump of claim 2, wherein the dome-shaped valve is a dome-shaped flexible member of which a lower portion is opened and an upper portion is convexly projected and has a cross slit formed at a center of the upper surface thereof, and when the push button is pushed, the content is exhausted through the cross slit while an inside of the container is compressed.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1 is a cross-sectional view illustrating a state in which a content is exhausted by operating a content exhaust pump in the related art.

(2) FIG. 2 is a cross-sectional view illustrating a state in which the force is removed from the content exhaust pump in the related art to be restored to an original state.

(3) FIG. 3 is an exploded perspective view illustrating a content exhaust pump according to the present invention.

(4) FIG. 4 is an assembly cross-sectional view illustrating a case where the content exhaust pump according to the present invention is not operated.

(5) FIG. 5 is an assembly cross-sectional view illustrating a case where the content exhaust pump according to the present invention is operated.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

(6) Hereinafter, a preferable embodiment of the present invention will be described in detail with reference to the accompanying drawings. Moreover, in describing the present invention, a detailed description of related known configurations or functions may be omitted to avoid obscuring the subject matter of the present invention.

Exemplary Embodiments

(7) As illustrated in FIGS. 3 to 5, a content exhaust pump according to the present invention includes a pump body 10 fastened to a container, a cylinder 20 as a cylindrical member having opened upper and lower portions of which an outer flange 21 is screw-coupled to an inner circumferential surface of the pump body 10, and an elevating device 30 which ascends and descends on the inner circumferential surface of the cylinder 20 by a pushing operation of a push button 40.

(8) An inner annular piece 11 located on the upper surface of the outer flange 21 of the cylinder 20 is inwardly projected on the inner circumferential surface of the cylindrical pump body 10.

(9) An annular packing 22 is inserted to a lower surface of the outer flange 21 of the cylinder 20 fastened to the pump body 10 so as to be in close contact with an upper inlet of the container, an outer side surface is suspended by a band type protrusion 11a which is formed in a cylindrical shape and projected from the center of the inner circumferential surface of the inner annular piece 11 of the pump body 10, and a fixing member 23 covering the upper inner and outer surfaces of the cylinder 20 is provided.

(10) The elevating device 30 is constituted by a cylindrical sealing piston 31 which is in close contact with the inner circumferential surface of the cylinder 20, an operation cylinder rod 32 coupled to an inner circumferential surface of the sealing piston 31, an elevating rod 33 of which a lower end is coupled to an upper outer circumferential surface of the operation cylinder rod 32 and an upper end is coupled to the push button 40, and a cylindrical spring 34 which is provided at a lower end of a flange 33a projected outward from the central portion of the elevating rod 33 and an upper groove 23a of the fixing member 23 to be compressed and expanded by the pushing operation of the push button 40.

(11) The operation cylinder rod 32 is a cylindrical member having an opened upper potion and a closed lower portion, and a lower portion has a lower projected part 32a formed to lift the sealing piston 31 when ascending and a transfer path 32b is horizontally formed through the upper portion of the lower projected part 32a.

(12) In a lower cylinder 20a having an inner diameter smaller than that of the cylinder at the lower portion of the cylinder 20, a cylindrical fixing member 51 having a projection 51a formed on the upper outer circumferential surface thereof is inserted to a boundary line between the cylinder 20 and the lower cylinder 20a, and a dome-shaped valve 52 suspended and fixed to the projection 51a of the cylindrical fixing member 51 is provided.

(13) The dome-shaped valve 52 has a dome shape of which the lower portion is opened and the upper portion is convexly projected and a cross slit 52a formed at the center of the upper surface thereof.

(14) The dome-shaped valve 52 is a flexible member, and as illustrated in FIG. 5, when the push button 40 is pushed, the content is exhausted through the cross slit 52a while the inside of the container is compressed.

(15) Next, in order to use the content exhaust pump container, when the push button 40 is pushed, the operation cylinder rod 32 descends in the cylinder 20 while the push button 40 descends. As illustrated in FIG. 5, while a space in the cylinder 20 is compressed, that is, decreased, the cross slit 52a formed on the upper surface of the dome-shaped valve 52 is separated such that the content in the container is introduced into the cylinder 20, and the introduced content is sucked through the center of the operation cylinder rod 32, introduced to the transfer path 32b of the operation cylinder rod 32, and exhausted to an exhaust nozzle 41 of the push button 40.

(16) In addition, when the pushing of the push button 40 is released, the push button 40 ascends while the cylindrical spring 34 is expanded, and the cross slit 52a of the dome-shaped valve 52 is closed while the operation cylinder rod 32 also ascends. That is, the pressure in the cylinder 20 is released to be restored to the original state.

(17) As described above, detailed exemplary embodiments have been described in the detailed description of the present invention, but a possibility that the technology of the present invention will be easily modified and executed by those skilled in the art is apparent and the modified exemplary embodiments will be included in the technical spirit disclosed in the appended claims of the present invention.