JP2020121802A - Liquid ejector - Google Patents

Abstract

To provide a liquid ejector capable of restricting a vertical movement of a push-down head without a stopper provided as a separate member.SOLUTION: The present disclosure is a liquid ejector 1 that includes a side wall 12 hanging down from a ceiling wall 11, a mounting cylinder 4 mounted on a mouth portion 3 of a container body 2, and a push-down head 9 fixed to an upper end of a stem 7, and is capable of ejecting a content liquid from a nozzle 8 by pressing and returning operations of the push-down head 9. The push-down head 9 has a peripheral wall 60 hanging from a pressing portion. The peripheral wall 60 has a guide rib 60a extending in a vertical direction. The mounting cylinder 4 has a guide groove 50a, and the push-down head 9 can be pushed down by the guide rib 60a being guided in the guide groove 50a when the push-down head 9 is positioned at a predetermined circumferential position with respect to the mounting cylinder 4, and the push-down head 9, when lifted upward by a predetermined distance, can be rotationally moved to a circumferential position where the push-down head 9 cannot be pushed down.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a liquid ejector having a stopper function that restricts the pressing down of a pressing head.

BACKGROUND ART Heretofore, as a liquid ejector, for example, one described in Patent Document 1 has been known. In such a conventional liquid ejector, the cylinder is fixed with the lower end suspended in the container body by the base cap attached to the outer periphery of the mouth of the container body, and the cylinder is fixed above the opening at the center of the upper end of the base cap, and the upper and lower portions are biased. The movable member is provided with an operating member provided with a push-down head with a nozzle on the upper end of the stem that is movably protruded, and the liquid in the container is sucked up and ejected from the nozzle by vertical movement of the operating member.

JP, 2004-262502, A

In the liquid ejector as described above, a stopper, which is a separate member, is interposed between the push-down head and the base cap to prevent the push-down head from descending so as to prevent the push-down head from being pushed down by mistake when not in use. However, the ejection of contents that the user did not intend is suppressed. However, the user had to remove the stopper and store it when using the contents, and there was room for improvement in terms of handling.

An object of the present disclosure is to solve the above problem, and an object of the present disclosure is to provide a liquid ejector capable of restricting the vertical movement of a push-down head without providing a stopper as a separate member.

The present disclosure has been made to solve the above problems, and the liquid ejector of the present disclosure is
A top wall having an opening in the center, and a side wall hanging from the top wall, and a mounting cylinder mounted at the mouth of the container body,
A stem projecting vertically movable in an upwardly biased state from an opening formed in the top wall of the mounting cylinder;
A push-down head fixed to the upper end of the stem,
A liquid ejector capable of sucking up the liquid content of a container body by pressing and returning operations of the push-down head and pouring the liquid from a nozzle provided in the push-down head,
The push-down head has a peripheral wall extending downward from the pressing portion, and is rotatable about the central axis with respect to the mounting cylinder.
One of the peripheral wall and the mounting cylinder has a guide rib extending in the vertical direction,
The other of the peripheral wall and the mounting cylinder has a guide groove extending in the vertical direction,
When the push-down head is positioned at a predetermined circumferential position with respect to the mounting cylinder, the guide rib is guided in the guide groove, whereby the push-down head can be pushed down,
The guide rib is released from the guide groove by lifting the push-down head positioned at the predetermined circumferential position upward by a predetermined distance, and the push-down head can be rotationally moved to a circumferential position where the push-down head cannot be pressed down. Is characterized by.

In the liquid ejector according to an embodiment of the present disclosure, in the above configuration, the mounting cylinder further includes a guide cylinder that surrounds the side wall from a radial outside and is connected to a lower end portion of the side wall, and the guide groove or the guide rib is It is preferably provided on the guide tube.

According to the present disclosure, it is possible to provide a liquid ejector capable of restricting the vertical movement of the push-down head without providing a separate member stopper.

FIG. 3 is a side cross-sectional view showing a state in which the liquid ejector according to the embodiment of the present disclosure is attached to a container body and a pressing head can be pressed down. It is an expanded sectional view of the liquid ejector part in FIG. It is sectional drawing by the AA cross section of FIG. FIG. 3 is a front view of the liquid ejector according to the embodiment of the present disclosure (pressable state) as seen from the nozzle side. FIG. 3 is a side cross-sectional view (enlarged cross-sectional view) showing a state in which the liquid ejector according to the embodiment of the present disclosure is mounted on a container body and a pressing head cannot be pressed down. It is sectional drawing by the BB cross section of FIG. It is the front view seen from the nozzle side of the liquid ejector (state which cannot be pushed down) concerning one embodiment of this indication.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. As shown in FIG. 1, the liquid ejector 1 according to the present embodiment holds a cylinder 5 in a state in which a lower end is hung inside the container body 2 by a mounting cylinder 4 attached to the outer periphery of the mouth portion 3 of the container body 2. At the same time, a push-down head 9 with a nozzle 8 is provided on the upper end portion of a stem 7 which is vertically movably projected from an opening 6 at the center of the upper end of the mounting cylinder 4 while being biased upward. The liquid ejecting device 1 can suck up the content liquid in the container body 2 and inject it from the nozzle 8 by the pressing and returning operations of the depressing head 9.

In the present specification and claims, the up-down direction means the upper side and the lower side in the state where the container body 2 is in the upright posture as shown in FIG. Further, the radially inner side means a direction heading toward the inner side (the central axis O side) along a straight line passing through the central axis O of the liquid ejector 1 in FIG. 1 and perpendicular to the central axis O, and the radially outer side means , The direction toward the outside (direction away from the central axis O) along a straight line passing through the central axis O and perpendicular to the central axis O. In the front-back direction, the direction in which the content is ejected from the nozzle 8 (left direction in FIG. 1) is the front, and the opposite direction is the rear. In the following description, by rotating the push-down head 9 around the central axis O with respect to the fixed container body 2, it is explained that the push-down head 9 is switched between a pushable state and a non-pushable state. However, it should be noted that all the drawings are based on the push-down head 9. The left-right direction of the liquid ejector 1 is a direction perpendicular to the paper surface of FIG.

The mounting cylinder 4 has a top wall 11 having an opening 6 formed in the center, a side wall 12 that hangs from the top wall 11 (in the present embodiment, hangs from the outer peripheral edge of the top wall 11), and the side wall 12 from the radially outer side. A guide cylinder 50 that is integrally provided at the lower end of the side wall 12 through the connecting portion 51 is provided. Further, the inner peripheral surface of the side wall 12 is provided with a female screw portion 13 that is screwed into a male screw portion provided on the outer peripheral surface of the mouth portion 3.

The cylinder 5 has a tubular shape with open upper and lower ends, and as shown in FIG. 2, a flange 14 protruding outward in the radial direction is provided at the upper part of the outer peripheral surface, and the outside air is introduced into the peripheral wall below the flange 14. The hole 5a is formed. The lower surface of the flange 14 is provided with a packing that comes into contact with the upper end of the mouth portion 3, and the flange 14 and the packing are sandwiched between the top wall 11 of the mounting cylinder 4 and the upper end of the mouth portion 3. Further, as shown in FIG. 1, the lower end portion of the cylinder 5 is provided with a fitting tubular portion 16 with a reduced diameter, and a pipe 15 having an upper end fitted inside the fitting tubular portion 16 is provided inside the container body 2. Pend at the bottom. A suction valve 17 is provided at the lower end of the cylinder 5.

The ring cap 10 non-rotatably fits a guide cylinder 18 penetrating the stem 7 to the inner circumference of the upper end of the cylinder 5 via a vertical rib 19 for preventing rotation, and extends from the center of the guide cylinder 18 in the vertical direction to the outer peripheral side. The fitting cylinder 20 is vertically provided on the flange 18a, and the inner circumference of the fitting cylinder 20 is fitted onto the outer circumference of the upper end of the cylinder 5 through the concave-convex engaging means so as not to slip out. Further, the outer peripheral cylinder 20a hangs from the outer peripheral end of the flange 18a to prevent the mounting cylinder 4 from coming out upward. That is, the mounting cylinder 4 is restricted in its vertical movement by the flange 14 of the cylinder 5 and the outer peripheral cylinder 20a of the ring cap 10, and is rotatably mounted to the cylinder 5. In the present embodiment, the concave-convex engaging means is composed of the protrusions 21 provided in the upper and lower two steps on the outer peripheral surface of the upper end of the cylinder 5 and the groove portions of the two upper and lower steps formed on the inner peripheral surface of the fitting cylinder 20 corresponding thereto. Composed.

The push-down head 9 includes a vertical cylinder 23 that hangs down from the center of the top wall 22 (pressing portion) and fits on the upper end of the stem 7, and a peripheral wall that surrounds the stem 7 from the outside in the radial direction and extends downward from the top wall 22 (pressing portion). The nozzle 8 communicates with the vertical cylinder 23. In this embodiment, as shown in FIGS. 2 and 3, a guide rib 60a is provided at one circumferential position on the outer circumferential surface of the circumferential wall 60 so as to project radially outward and extend in the vertical direction. The guide rib 60a is provided below the nozzle 8 so as to extend from the lower surface of the nozzle 8 to the lower edge of the peripheral wall 60, but the circumferential position, the length and the number of the guide rib 60a can be appropriately changed. .. For example, the lower end portion of the guide rib 60a may project further downward than the lower end of the peripheral wall 60, or may extend above the lower end of the peripheral wall 60. Further, by providing three or more guide ribs 60a at equal intervals in the circumferential direction, the posture of the peripheral wall 60 is stabilized when the guide ribs 60a of the peripheral wall 60 are brought into contact with the upper end portion of the guide cylinder 50 shown in FIG. Can be transformed into

On the other hand, as shown in FIGS. 2 and 3, the inner peripheral surface of the guide cylinder 50 provided in the mounting cylinder 4 is provided with a guide groove 50a that is recessed radially outward at one location in the circumferential direction and extends in the vertical direction. ing. The guide groove 50a may be provided so as to correspond to the guide rib 60a. 2 and 3, the lower end portion of the peripheral wall 60 enters the inner peripheral surface of the guide cylinder 50 (the lower end edge of the peripheral wall 60 is positioned lower than the upper end edge of the guide cylinder 50 in the state where the pressing head 9 can be pressed down). Further, the guide rib 60a on the side of the peripheral wall 60 further enters and is guided in the guide groove 50a on the side of the guide cylinder 50. As a result, rotation of the push-down head 9 in the circumferential direction with respect to the mounting cylinder 4 is restricted.

The stem 7 includes an upper tubular portion 26 having upper and lower ends opened, an annular protrusion 28 that is provided at the lower end of the upper tubular portion 26 and protrudes radially inward, and a lower tubular portion 29 that hangs down from the annular protrusion 28. The lower tubular portion 29 has a guide tubular wall portion 30 vertically extending from a lower end portion of the lower tubular portion 29 via a skirt portion that extends in a tapered shape toward the outer peripheral side.

A piston member 31 is provided near the guide cylinder wall portion 30 of the stem 7. Specifically, the piston member 31 includes a cylindrical seal cylinder 32 that comes into liquid-tight and slidable contact with the inner periphery of the guide cylinder wall portion 30 of the stem 7, and a lower end of the seal cylinder 32 from the outer peripheral side. It is composed of a skirt-shaped piston 33, which is connected to the outer peripheral edge of the extended flange, and whose diameter is expanded upward and downward, and an annular projection 34 which is vertically provided at the lower end of the seal cylinder 32. The piston 33 is slidably fitted in the cylinder 5.

A piston guide 35 is fitted on the lower portion of the stem 7. The piston guide 35 includes a tubular main body portion 35 a that fits into the lower tubular portion 29 of the stem 7, a bottom wall portion 37 that extends radially outward from the lower end portion of the main body portion 35 a, and an outer peripheral edge of the bottom wall portion 37. And a vertically extending outer cylinder portion 38. A plurality of protrusions 39 for forming gaps between the outer circumference of the outer cylinder portion 38 and the inner circumference of the cylinder 5 are provided on the outer circumference of the upper end of the outer cylinder portion 38 at intervals in the circumferential direction. Further, the upper surface of the bottom wall portion 37 is configured to be able to contact the lower end of the annular projection 34 of the piston member 31.

A coil spring 40 is arranged between the piston guide 35 and the suction valve 17. The upper end of the coil spring 40 is in contact with the lower surface of the bottom wall portion 37 on the inner peripheral side of the outer tubular portion 38 and urges the stem 7 upward.

A blocking cylinder member 41 is provided between the stem 7 and the ring cap 10 to close the outside air introduction hole 5a when the pressing head 9 is pressed down. The closing cylinder member 41 is slidably fitted to the upper part of the cylinder 5 and can close the outside air introducing hole 5a, and the sliding closing part 42 surrounds the lower (lower end in this example) outer circumference. It is composed of a protruding base cylinder portion 43. The closing cylinder member 41 is pressed down by the downward stepped portion 44 provided on the vertical cylinder 23 of the push-down head 9 to close the outside air introduction hole 5a when the push-down head 9 moves to the lowest position.

In order to use the contents in the container body 2 by using the liquid ejecting apparatus 1 having the above-described configuration, the user can push down the top wall 22 (pressing portion) of the pushing down head 9 from the pushable state shown in FIGS. 1 to 3. Press down to push down. Then, the outer peripheral surface of the peripheral wall 60 is guided by the inner peripheral surface of the guide cylinder 50, and moves downward along the guide cylinder 50. At this time, the guide rib 60a is also guided in the guide groove 50a and moves downward along the guide groove 50a. As a result, the stem 7 described later is pushed down by the push-down head 9, and the contents accumulated in the cylinder 5 are pressure-fed upward through the inside of the stem 7, so that the contents in the container body 2 are discharged from the nozzle 8. Can be ejected.

Whether or not the push-down head 9 is in the push-down position by matching the circumferential positions of the guide rib 60a and the guide groove 50a is as to whether or not the circumferential positions of the alignment marks 62 and 52 shown in FIG. Can be determined by. Positioning marks 62 are provided on the outer peripheral surface of the peripheral wall 60 at the same circumferential positions as the circumferential positions of the guide ribs 60a. Further, on the outer peripheral surface of the guide cylinder 50, alignment marks 52 are provided at the same circumferential position as the circumferential position of the guide groove 50a. Therefore, by confirming that the alignment marks 62 and 52 are at the same circumferential position as shown in FIG. 4, the user can visually confirm that the liquid ejector 1 can be pushed down. ..

Next, when the use of the contents is finished, the user moves the push-down head 9 in the circumferential direction as shown in FIGS. It cannot be pushed down. Next, a method of moving the push-down head 9 in the circumferential direction will be described.

As shown in FIG. 2, in a state in which the push-down head 9 can be pushed down but is not pushed down yet, that is, in the initial position of the push-down head, the closed tubular member 41 pushes up the sliding blockage portion 42 by, for example, the piston 33, and top dead. A gap G having a predetermined distance in the vertical direction is provided between the closed tubular member 41 and the guide tubular wall portion 30 of the stem 7 at the point. Then, by pushing down the head 9 by this gap G from the state of FIG. 2, the lower end of the guide rib 60a of the peripheral wall 60 can be pulled up above the guide groove 50a of the guide cylinder 50. As a result, the circumferential position of the guide rib 60a of the peripheral wall 60 is no longer constrained by the guide groove 50a of the guide cylinder 50. Therefore, the user can rotate the push-down head 9 in the circumferential direction after lifting it by the gap G.

FIGS. 5 and 6 show a state in which the push-down head 9 is lifted by the gap G from the state of FIGS. 2 and 3 and then rotated by a predetermined angle in the circumferential direction. As shown in FIG. 6, since the push-down head 9 is rotated to a position where the circumferential positions of the guide rib 60a and the guide groove 50a do not overlap at all, the lower end surface of the guide rib 60a is above the guide cylinder 50 without the guide groove 50a. Abutting on the end face, the push-down head 9 cannot be pushed downward. Therefore, by keeping the state shown in FIGS. 5 and 6, it is possible to prevent the user from unintentionally pushing down the push-down head 9 to eject the contents from the nozzle 8.

When the liquid ejector 1 is in the state shown in FIGS. 5 and 6, the circumferential positions of the guide rib 60a and the guide groove 50a are separated from each other by a predetermined angle, and therefore the circumferential positions of the alignment marks 62 and 52 are also illustrated. As shown in FIG. 7, they are separated by a predetermined angle. By visually recognizing the alignment marks 62 and 52, the user can recognize that the push-down head 9 of the liquid ejector 1 cannot be pushed down.

Then, when the push-down head 9 is pushed down again to use the contents, the user pushes the push-down head 9 against the guide tube 50 so that the circumferential positions of the alignment marks 62 and 52 coincide with each other from the state of FIG. Rotate relative. This allows the guide ribs 60a to move along the guide grooves 50a, so that the push-down head 9 can be pushed down again to eject the contents.

As described above, the present embodiment includes the top wall 11 having an opening in the center and the side wall 12 that hangs down from the top wall 11, and the mounting cylinder 4 that is mounted in the mouth portion 3 of the container body 2 and the mounting cylinder. The stem 7 protruding upward and downward from the opening 6 formed in the top wall 11 of FIG. 4 so as to be vertically movable, and the push-down head 9 fixed to the upper end of the stem 7, the push-down head 9 pressing and returning operations. The liquid ejector 1 is capable of sucking up the content liquid of the container body 2 by means of the nozzle 8 provided in the push-down head 9, and the push-down head 9 has a peripheral wall extending downward from the pressing portion (top wall 22). 60, is rotatable about the central axis O with respect to the mounting cylinder 4, the peripheral wall 60 has a guide rib 60a extending in the vertical direction, the mounting cylinder 4 has a guide groove 50a extending in the vertical direction, When the push-down head 9 is positioned at a predetermined circumferential position with respect to the mounting cylinder 4, the guide rib 60a is guided in the guide groove 50a so that the push-down head 9 can be pushed down and positioned at the predetermined circumferential position. By lifting the pushed down head 9 upward by a predetermined distance (gap G), the guide rib 60a is released from the guide groove 50a so that the pushed down head 9 can be rotationally moved to a circumferential position where it cannot be pushed down. By adopting such a configuration, the press-down head 9 can be switched between the press-down enabled state and the press-down disabled state by rotating the press-down head 9 relative to the mounting cylinder 4, without providing a stopper as a separate member. It is possible to regulate the vertical movement of the push-down head when not in use.

Although the present disclosure has been described based on the drawings and the embodiments, it should be noted that those skilled in the art can easily make various variations and modifications based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions and the like included in each component can be rearranged so as not to logically contradict each other, and a plurality of components can be combined into one or divided. It should be understood that these are also included in the scope of the present invention.

For example, the pump mechanism inside the cylinder that sucks up the content liquid may adopt another known structure.

Further, in the present embodiment, the mounting cylinder 4 is configured to include the guide cylinder 50, but the present invention is not limited to this aspect, and the mounting cylinder 4 may not be provided with the guide cylinder 50. When the mounting cylinder 4 is not provided with the guide cylinder 50, for example, a guide groove or guide rib may be provided on the outer peripheral surface of the side wall 12, and the guide rib or guide groove provided on the inner peripheral surface of the peripheral wall 60 may be guided. Good.

Further, in this embodiment, the guide rib 60a is provided on the peripheral wall 60 of the push-down head 9 and the guide groove 50a is provided on the guide tube 50 of the mounting tube 4, but the present invention is not limited to this aspect. A guide groove may be provided in the peripheral wall 60 of the push-down head 9 and a guide rib may be provided in the guide cylinder 50 of the mounting cylinder 4.

Further, in the present embodiment, the peripheral wall 60 of the push-down head 9 is configured to be guided along the inner peripheral surface of the guide cylinder 50 of the mounting cylinder 4, but the invention is not limited to this aspect. The guide cylinder 50 may be configured to be guided along the inner peripheral surface of the peripheral wall 60. In this case, for example, the guide groove or the guide rib may be provided on the inner peripheral surface of the peripheral wall 60, and the guide rib or the guide groove may be provided on the outer peripheral surface of the guide cylinder 50. Further, the peripheral wall 60 of the push-down head 9 may not be guided by the guide cylinder 50 of the mounting cylinder 4.

DESCRIPTION OF SYMBOLS 1 Liquid ejector 2 Container body 3 Portion 4 Mounting cylinder 5 Cylinder 5a Outside air introduction hole 6 Opening 7 Stem 8 Nozzle 9 Pushing down head 10 Ring cap 11 Top wall 12 Side wall 13 Female thread part 14 Flange 15 Pipe 16 Fitting cylinder part 17 Suction Valve 18 Guide tube 18a Flange 19 Vertical rib 20 Fitting tube 20a Peripheral tube 21 Projection 22 Top wall (pressing part)
23 Vertical cylinder 26 Upper cylinder part 28 Annular protrusion part 29 Lower cylinder part 30 Guide cylinder wall part 31 Piston member 32 Seal cylinder 33 Piston 34 Annular protrusion 35 Piston guide 35a Main body part 37 Bottom wall part 38 Outer cylinder part 39 Protrusion 40 Coil spring 41 Closure cylinder member 42 Sliding closure part 43 Base cylinder part 44 Downward step part 50 Guide cylinder 50a Guide groove 51 Connecting part 52 Alignment mark 60 Peripheral wall 60a Guide rib 62 Alignment mark G Gap (predetermined distance)
O central axis

Claims (2)

A top wall having an opening in the center, and a side wall hanging from the top wall, and a mounting cylinder mounted at the mouth of the container body,
A stem projecting vertically movable in an upwardly biased state from an opening formed in the top wall of the mounting cylinder;
A push-down head fixed to the upper end of the stem,
A liquid ejector capable of sucking up the liquid content of a container body by pressing and returning operations of the push-down head and pouring the liquid from a nozzle provided in the push-down head,
The push-down head has a peripheral wall extending downward from the pressing portion, and is rotatable about the central axis with respect to the mounting cylinder.
One of the peripheral wall and the mounting cylinder has a guide rib extending in the vertical direction,
The other of the peripheral wall and the mounting cylinder has a guide groove extending in the vertical direction,
When the push-down head is positioned at a predetermined circumferential position with respect to the mounting cylinder, the guide rib is guided in the guide groove, whereby the push-down head can be pushed down,
The guide rib is released from the guide groove by lifting the push-down head positioned at the predetermined circumferential position upward by a predetermined distance, and the push-down head can be rotationally moved to a circumferential position where the push-down head cannot be pressed down. Liquid ejector characterized by. The mounting cylinder further includes a guide cylinder that surrounds the side wall from the outside in the radial direction and is connected to a lower end portion of the side wall, and the guide groove or the guide rib is provided on the guide cylinder. Liquid ejector as described.

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