Discharger for high viscosity

Abstract

To easily mount a discharger for high viscosity on a container body.SOLUTION: The present invention relates to a discharger for high viscosity that comprises: a pump 11 which has a cylinder 21; a suction pipe 12 which extends downward from the cylinder; and a press plate member 13 which is mounted on a liquid surface of an internal liquid in a container body, and moves down as the liquid level decreases, wherein the suction pipe is fitted to the pump so as to move upward, the press plate member is fitted externally onto the suction pipe in a state where upward movement relative to the pump is restricted, and in the suction pipe and the press plate member, a first engagement part 25 and a second engagement part 26 which restrict the press plate member from descending relative to the suction pipe are individually formed by being detachably engaged with each other. When the discharger for high viscosity is mounted on the container body, a lower end opening edge of the suction pipe is pushed up by a bottom surface in the container body and the suction pipe ascends relative to the press plate member, so that the first engagement part and the second engagement part are disengaged from each other.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a dispenser for high viscosity fluids.

Background Art

[0002] Conventionally, as shown in Patent Document 1 below, for example, there is a pump having a discharge port through which the content liquid accommodated in the container body is discharged, and a cylinder inserted into the container body, and a suction pipe that extends downward from the cylinder and has a lower end opening communicating with the inside of the container body, and a pressing plate member that is placed on the liquid surface of the content liquid in the container body and descends as the liquid surface height decreases. A dispenser for high viscosity fluids provided with the above is known. When the pressing plate member placed on the liquid surface of the content liquid in the container body descends as the liquid surface height decreases, when the content liquid in the container body is sucked up from the lower end opening of the suction pipe, it is possible to prevent a cavity without the content liquid from being generated around the lower end of the suction pipe.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the pressing plate member is externally mounted on the suction pipe so as to be vertically movable, the position of the pressing plate member is difficult to stabilize, and there is a possibility that it may be difficult to attach the dispenser for high viscosity fluids to the container body.

[0005] The present invention provides a dispenser for high viscosity fluids that can be easily attached to a container body.

Means for Solving the Problems

[0006] A dispenser for high-viscosity fluids according to one aspect of the present invention includes a discharge port through which the content liquid stored in the container body is discharged, a pump having a cylinder inserted into the container body, a suction pipe extending downward from the cylinder and having a lower end opening communicating with the inside of the container body, and a pressing plate member placed on the liquid surface of the content liquid in the container body and descending as the liquid surface height decreases. The suction pipe is attached to the pump so as to be movable upward, the pressing plate member is externally mounted on the suction pipe while its upward movement relative to the pump is restricted, and the suction pipe and the pressing plate member are each formed with a first engaging portion and a second engaging portion that engage with each other detachably to restrict the pressing plate member from descending relative to the suction pipe. When this dispenser for high-viscosity fluids is attached to the container body, the lower end opening edge of the suction pipe is pushed up against the bottom surface inside the container body, the suction pipe rises relative to the pressing plate member, and the engagement between the first engaging portion and the second engaging portion is released.

[0007] Since the suction pipe and the pressing plate member are each formed with a first engaging portion and a second engaging portion that engage with each other detachably to restrict the pressing plate member from descending relative to the suction pipe, the position of the pressing plate member relative to the suction pipe is stable, and the dispenser for high-viscosity fluids can be easily attached to the container body. When the dispenser for high-viscosity fluids is attached to the container body, the lower end opening edge of the suction pipe is pushed up against the bottom surface inside the container body, the suction pipe rises relative to the pressing plate member, and the engagement between the first engaging portion and the second engaging portion is released. Therefore, when the dispenser for high-viscosity fluids is attached to the container body, the pressing plate member drops onto the liquid surface of the content liquid in the container body, and thereafter, the pressing plate member can be lowered as the liquid surface height decreases.

[0008] A depression may be formed upward at the lower end opening edge of the suction pipe, and a communication hole penetrating the suction pipe in the radial direction may be formed.

[0009] Since a depression is formed upward and communication holes penetrating the suction pipe in the radial direction are formed at the lower end opening edge of the suction pipe, even if the lower end opening edge of the suction pipe is in contact with the bottom surface inside the container body, communication between the inside of the container body and the lower end opening of the suction pipe can be surely ensured.

[0010] A regulating projection may be provided at the lower end portion of the suction pipe, which protrudes outward in the radial direction and regulates the pressing plate member that has reached the descending end position from detaching downward from the suction pipe.

[0011] Since a regulating projection is provided at the lower end portion of the suction pipe, as the content liquid inside the container body decreases, when the pressing plate member reaches the descending end position, it will be locked by the regulating projection. When the content liquid inside the container body is used up and the high-viscosity liquid discharger is removed from the container body, by hooking the pressing plate member located at the descending end position on the regulating projection, the pressing plate member will also be pulled out of the container body together with the suction pipe. As a result, the entire high-viscosity liquid discharger including the pressing plate member locked by the regulating projection can be easily replaced with a new container body filled with the content liquid.

Advantages of the Invention

[0012] According to one aspect of the present invention, a high-viscosity liquid discharger can be easily attached to a container body.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0014] Hereinafter, with reference to the drawings, a dispenser for high-viscosity fluids according to an embodiment of the present invention will be described. As shown in FIG. 1, the dispenser 1 for high-viscosity fluids according to this embodiment includes a pump 11, a suction pipe 12, a pressing plate member 13, a first mounting cap 14, and a second mounting cap 15. The suction pipe 12, the first mounting cap 14, and the second mounting cap 15 are arranged coaxially with a common axis. Hereinafter, this common axis is referred to as the central axis O, the direction along the central axis O is referred to as the vertical direction, the direction intersecting the central axis O as viewed from the vertical direction is referred to as the radial direction, and the direction orbiting around the central axis O as viewed from the vertical direction is referred to as the circumferential direction.

[0015] The pump 11 has a discharge port 11a through which the content liquid accommodated in the container body W is discharged, and a cylinder 21 inserted into the container body W. In the illustrated example, the pump 11 includes a cylinder 21, a pressing head 20, and a stem and a piston (not shown). A flange portion 21a protruding radially outward is formed at the upper end of the cylinder 21. The stem is supported so as to be movable downward in an upwardly biased state and extends upward from within the cylinder 21. The pressing head 20 has a discharge port 11a and is attached to the upper end of the stem. The piston is fitted in the cylinder 21 so as to be slidable vertically and is linked to the vertical movement of the pressing head 20 and the stem. When the pressing head 20, the stem, and the piston descend, the content liquid in the cylinder 21 is discharged from the discharge port 11a through the stem, and when the pressing head 20, the stem, and the piston ascend, the content liquid in the container body W is supplied into the cylinder 21 through the suction pipe 12.

[0016] The first mounting cap 14 is attached to the upper end of the container body W to attach the pump 11 to the container body W. Here, the container body W is formed in a bottomed cylindrical shape. The inner diameter of the container body W is the same over the entire length in the vertical direction. A male screw portion to which the first mounting cap 14 is screwed is formed on the outer peripheral surface of the upper end portion of the container body W.

[0017] The first mounting cap 14 includes a large-diameter cylinder 14a, a medium-diameter cylinder 14b, a small-diameter cylinder 14c, a lower-stage portion 14d, and an upper-stage portion 14e. The large-diameter cylinder 14a is located at the lowermost position in the first mounting cap 14 and is formed with the largest inner diameter and outer diameter. A female screw portion that engages with the male screw portion of the container body W is formed on the inner peripheral surface of the large-diameter cylinder 14a. The lower-stage portion 14d extends radially inward from the upper end portion of the large-diameter cylinder 14a. The lower-stage portion 14d is formed in an annular plate shape with the front and back surfaces facing the vertical direction. The outer peripheral edge portion of the lower surface of the lower-stage portion 14d abuts against the upper end opening edge of the container body W when the high-viscosity discharger 1 is attached to the container body W. The medium-diameter cylinder 14b extends radially inward as it goes upward from the inner peripheral edge portion of the lower-stage portion 14d. The upper-stage portion 14e extends radially inward from the upper end portion of the medium-diameter cylinder 14b. The upper-stage portion 14e is formed in an annular plate shape with the front and back surfaces facing the vertical direction. The small-diameter cylinder 14c extends upward from the inner peripheral edge portion of the upper-stage portion 14e. A male screw portion to which the second mounting cap 15 is screwed is formed on the outer peripheral surface of the small-diameter cylinder 14c.

[0018] The second mounting cap 15 is formed in a toped cylindrical shape having an annular top wall, and the pump 11 is attached to the first mounting cap 14 by sandwiching the flange portion 21a of the cylinder 21 of the pump 11 in the vertical direction between the lower surface of this top wall and the upper end opening edge of the small-diameter cylinder 14c.

[0019] The suction pipe 12 extends downward from the cylinder 21, and the lower end opening communicates with the inside of the container body W. The suction pipe 12 is attached to the pump 11 so as to be movable upward. The vertical distance A between the lower end opening edge of the suction pipe 12 and the lower surface of the lower-stage portion 14d of the first mounting cap 14 is larger than the vertical distance B (see FIG. 3) between the upper end opening edge of the container body W and the bottom surface inside the container body W.

[0020] At the lower end of the suction pipe 12, a regulating projection 12c is provided which protrudes radially outward and restricts the separation of the pressing plate member 13, which has reached the descending end position, from the suction pipe 12 downward. The regulating projection 12c is formed in a flange shape that extends continuously over the entire circumference. Note that the regulating projection 12c may be formed in a flange shape that extends intermittently over the entire circumference. The lower surface of the regulating projection 12c is radially continuous with the lower end opening edge of the suction pipe 12 without a step. At the lower end opening edge of the suction pipe 12, a depression is formed upward, and a communication hole 12d that penetrates the suction pipe 12 in the radial direction is formed. The communication hole 12d also penetrates the regulating projection 12c in the radial direction and divides the regulating projection 12c in the circumferential direction. A plurality of communication holes 12d are provided at intervals in the circumferential direction.

[0021] The upper part of the suction pipe 12 surrounds the cylinder 21 from the outside in the radial direction, and the lower part of the suction pipe 12 extends downward from the cylinder 21. The upper end opening edge of the suction pipe 12 is located below the upper end of the cylinder 21. The vertical positions of the upper end opening edge of the suction pipe 12 and the lower part 14d of the first mounting cap 14 are equal to each other. The inner diameter of the upper part of the suction pipe 12 is slightly larger than the outer diameter of the maximum outer diameter part of the cylinder 21. The inner peripheral surface of the upper part of the suction pipe 12 is in contact with or close to the outer peripheral surface of the cylinder 21. On the inner peripheral surface of the suction pipe 12, at the connection part between the upper part and the lower part, a seal projection 21b is provided which protrudes radially inward and is in liquid-tight contact with the outer peripheral surface of the lower end of the cylinder 21 over the entire circumference. The seal projection 21b is formed to be elastically deformable. The lower part of the seal projection 21b extends downward as it goes radially inward. The lower end of the seal projection 21b is located below the cylinder 21.

[0022] The pressing plate member 13 is externally mounted on the suction pipe 12 in a state where its upward movement with respect to the pump 11 is restricted. The pressing plate member 13 includes a cylindrical portion 22 extending in the vertical direction, and a plate portion 23 protruding radially outward from the cylindrical portion 22 and placed on the liquid surface L of the content liquid in the container body W. Note that the cylindrical portion 22 and the plate portion 23 may be integrally formed.

[0023] The lower part of the cylindrical portion 22 is externally fitted to the upper end portion of the suction pipe 12. The upper part of the cylindrical portion 22 extends upward from the suction pipe 12. An upper flange portion 22a protruding radially outward is formed at the upper end portion of the cylindrical portion 22. The upper surface of the upper flange portion 22a abuts or is close to the lower surface of the upper stage portion 14e of the first mounting cap 14. Thereby, the upward movement of the pressing plate member 13 with respect to the pump 11 is restricted. At the lower part of the cylindrical portion 22, a lower flange portion 22b and a locking projection 22c protruding radially outward are formed in this order from above to below. The lower surface of the lower flange portion 22b and the locking projection 22c sandwich the inner peripheral edge portion of the plate portion 23 in the vertical direction, thereby fixing the plate portion 23 to the cylindrical portion 22. The lower surface of the plate portion 23 is located below the upper end opening edge of the suction pipe 12. The upper surface of the plate portion 23 abuts or is close to the lower surface of the lower stage portion 14d of the first mounting cap 14. A plurality of recesses 22d that are recessed upward and penetrate the cylindrical portion 22 in the radial direction are formed at intervals in the circumferential direction at the lower end opening edge of the cylindrical portion 22. The lower end opening edge of the cylindrical portion 22 abuts the upper surface of the regulating projection 12c when the pressing plate member 13 reaches the descending end position with respect to the suction pipe 12.

[0024] And in the present embodiment, as shown in FIG. 2, a first engaging portion 25 and a second engaging portion 26 that restrict the pressing plate member 13 from descending with respect to the suction pipe 12 are separately formed on the suction pipe 12 and the pressing plate member 13 by engaging with each other detachably.

[0025] The first engaging portion 25 protrudes radially outward from the outer peripheral surface of the upper end portion of the suction pipe 12 and extends continuously over the entire circumference. The second engaging portion 26 protrudes radially inward from the inner peripheral surface of the cylindrical portion 22 of the pressing plate member 13, and a plurality of them are formed at intervals in the circumferential direction. The lower facing bottom surface of the second engaging portion 26 is placed on the upper facing top surface of the first engaging portion 25. The first engaging portion 25 is formed so as to be able to straddle over the second engaging portion 26 upward. The radial distance between the radially inner end portion of the second engaging portion 26 and the central axis O is larger than the radius of the outer peripheral surface of the suction pipe 12. The first engaging portion 25 is in contact with the inner peripheral surface of the cylindrical portion 22 of the pressing plate member 13.

[0026] In a longitudinal sectional view along the vertical direction, the first engaging portion 25 and the second engaging portion 26 exhibit a radially protruding curved shape. In the longitudinal sectional view, the radii of curvature of the first engaging portion 25 and the second engaging portion 26 are equal to each other. The radial size of the first engaging portion 25 is larger than the radial size of the second engaging portion 26. The vertical size of the first engaging portion 25 is larger than the vertical size of the second engaging portion 26. In addition, in the longitudinal sectional view, the radii of curvature of the first engaging portion 25 and the second engaging portion 26 may be made different from each other. The vertical size of the first engaging portion 25 may be made equal to or less than the vertical size of the second engaging portion 26.

[0027] Here, since the vertical distance A between the lower end opening edge of the suction pipe 12 and the lower surface of the lower stage portion 14d of the first mounting cap 14 is larger than the vertical distance B between the upper end opening edge of the container body W and the bottom surface inside the container body W, when the high-viscosity discharge device 1 is mounted on the container body W, the lower end opening edge of the suction pipe 12 is pushed up by the bottom surface inside the container body W, and as shown by the two-dot chain line in FIG. 2, the suction pipe 12 rises with respect to the pressing plate member 13. At this time, while the seal projection 21b provided in the suction pipe 12 slides in a liquid-tight manner upward along the outer peripheral surface of the cylinder 21, the first engaging portion 25 of the suction pipe 12 climbs over the second engaging portion 26 of the pressing plate member 13 upward, and the engagement between the first engaging portion 25 and the second engaging portion 26 is released. As a result, as shown in FIG. 3, the pressing plate member 13 drops by its own weight along the suction pipe 12 and is placed on the liquid surface L of the content liquid in the container body W. At this time, the upper end opening edge of the suction pipe 12 is located above the liquid surface L, and the lower end portion of the seal projection 21b is located above the lower end opening edge of the cylinder 21. Thereafter, the pressing plate member 13 descends as the liquid surface height of the content liquid in the container body W decreases. Note that the internal pressure of the container body W is always equal to the atmospheric pressure.

[0028] As described above, according to the high-viscosity discharger 1 according to the present embodiment, the first engaging portion 25 and the second engaging portion 26 that regulate the descent of the pressing plate member 13 with respect to the suction pipe 12 are separately formed on the suction pipe 12 and the pressing plate member 13 by engaging with each other detachably. Therefore, the position of the pressing plate member 13 with respect to the suction pipe 12 is stable, and the high-viscosity discharger 1 can be easily attached to the container body W.

[0029] When the high-viscosity discharger 1 is attached to the container body W, the lower end opening edge of the suction pipe 12 is pushed up by the bottom surface in the container body W. As shown by the two-dot chain line in FIG. 2, the suction pipe 12 rises with respect to the pressing plate member 13, and the engagement between the first engaging portion 25 and the second engaging portion 26 is released. Therefore, as shown in FIG. 3, when the high-viscosity discharger 1 is attached to the container body W, the pressing plate member 13 drops onto the liquid surface L of the content liquid in the container body W, and thereafter, the pressing plate member 13 can be lowered as the liquid surface height decreases.

[0030] Since the lower end opening edge of the suction pipe 12 is recessed upward and the communication hole 12d penetrating the suction pipe 12 in the radial direction is formed, even when the lower end opening edge of the suction pipe 12 is in contact with the bottom surface in the container body W, the communication between the inside of the container body W and the lower end opening of the suction pipe 12 can be surely ensured.

[0031] Since the restricting projection 12c is provided at the lower end of the suction pipe 12, as the content liquid in the container body W decreases, when the pressing plate member 13 reaches the descending end position, it will be locked by the restricting projection 12c. When the content liquid in the container body W is used up and the high-viscosity discharger 1 is removed from the container body W, by hooking the pressing plate member 13 located at the descending end position on the restricting projection 12c, the pressing plate member 13 will also be pulled out from the container body W together with the suction pipe 12. As a result, it is possible to easily replace the entire high-viscosity discharger 1, including the pressing plate member 13 locked by the restricting projection 12c, with a new container body W filled with the content liquid.

[0032] Note that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0033] For example, it is not necessary to form the communication hole 12d in the suction pipe 12. It is not necessary to provide the restricting projection 12c on the suction pipe 12. A plurality of the first engaging portions 25 may be provided at intervals in the circumferential direction, and the second engaging portion 26 may extend continuously over the entire circumference.

[0034] In addition, without departing from the spirit of the present invention, it is possible to appropriately replace the components in the above-described embodiments with well-known components, and the above-described embodiments and the modified examples may be appropriately combined.

Explanation of Reference Numerals

[0035] 1 High-viscosity discharger 11 Pump 11a Discharge port 12 Suction pipe 12c Restricting projection 12d Communication hole 13 Pressing plate member 21 Cylinder 25 First engaging portion 26 Second engaging part L Liquid level W Container body

Claims

1. A pump having a discharge port through which the content liquid contained in the container body is discharged and a cylinder inserted into the container body, A suction pipe extending downward from the cylinder and having a lower end opening communicating with the inside of the container body, A high-viscosity liquid discharger comprising a pressing plate member placed on the liquid surface of the content liquid in the container body and descending as the liquid surface height decreases, The suction pipe is attached to the pump so as to be movable upward, The pressing plate member is externally mounted on the suction pipe in a state where upward movement relative to the pump is restricted, The suction pipe and the pressing plate member are each formed with a first engaging portion and a second engaging portion that engage with each other detachably to restrict the pressing plate member from descending relative to the suction pipe, A high-viscosity liquid discharger, wherein when this high-viscosity liquid discharger is attached to the container body, the lower end opening edge of the suction pipe is pushed up against the bottom surface of the container body, the suction pipe rises relative to the pressing plate member, and the engagement of the first engaging portion and the second engaging portion is released.

2. The high-viscosity liquid discharger according to claim 1, wherein a communication hole that is recessed upward and penetrates the suction pipe in the radial direction is formed at the lower end opening edge of the suction pipe.

3. The high-viscosity liquid discharger according to claim 1 or 2, wherein a regulating projection is provided at the lower end portion of the suction pipe, which projects outward in the radial direction and restricts the pressing plate member that has reached the descending end position from detaching downward from the suction pipe.

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