JP2021178667A - Discharge cap - Google Patents

Abstract

To provide a discharge cap capable of discharging a predetermined amount of content fluid stably.SOLUTION: A discharge cap includes: an inside plug 1 which is mounted on a mouth part 51 of a container body 50 in which a content fluid is stored; and a cover body 2 which is arranged on the upper side of the inside plug 1. The cover body 2 includes: an upper wall 22 for covering the inside plug 1 from above; and a discharge hole 24 for penetrating the upper wall 22. The inside plug 1 includes: a valve storage cylinder 14 which is arranged on the lower side of the upper wall 22 and extends vertically, and whose inside communicates with the discharge hole 24; and a valve 15 which is arranged inside the valve storage cylinder 14 so as to move vertically, and which cuts off the communication between the inside of the valve storage cylinder 14 and the discharge hole 24 at the lifting end position. At least one out of the valve storage cylinder 14 and the upper wall 22 includes: an opening part 17 which is arranged between the valve storage cylinder 14 and the upper wall 22 and which communicates the inside and outside of the valve storage cylinder 14; and a guide wall part 18 which is arranged in the circumferential direction position different from the opening part 17 and extends in the circumferential direction, and which blocks between the valve storage cylinder 14 and the upper wall 22.SELECTED DRAWING: Figure 1

Description

The present invention relates to a discharge cap.

Conventionally, for example, the dispensing container described in Patent Document 1 is known. This pouring container includes a container body for accommodating the content liquid and a pouring cap (discharge cap) attached to the mouth of the container body. An inner plug is provided inside the injection cap, and a spherical body (moving valve body) is provided on the tubular body of the inner plug. When the container body is squeeze-deformed, the content liquid is poured only until the spherical body moves in the cylindrical body and sits on the tip of the annular wall. As a result, a substantially constant amount of the content liquid can be poured out.

Japanese Unexamined Patent Publication No. 2015-30488

With this type of discharge cap, there is room for improvement in that a predetermined amount of the content liquid is stably discharged.

One of the objects of the present invention is to provide a discharge cap capable of stably discharging a predetermined amount of the content liquid.

One aspect of the discharge cap of the present invention includes an inner plug attached to the mouth of a container body in which the content liquid is stored, and a cover body arranged above the inner plug, and the cover body is provided. The inner plug has an upper wall that covers the inner plug from above and a discharge hole that penetrates the upper wall. The inner plug is arranged under the upper wall and extends in the vertical direction, and the inside thereof discharges. It has a valve accommodating cylinder that communicates with the hole, and a valve that is vertically movable inside the valve accommodating cylinder and blocks communication between the inside of the valve accommodating cylinder and the discharge hole at a rising end position. At least one of the valve accommodating cylinder and the upper wall is arranged between the valve accommodating cylinder and the upper wall, and has an opening that communicates the inside and the outside of the valve accommodating cylinder, and the opening. Has a guide wall portion that is arranged at different circumferential positions, extends circumferentially, and closes between the valve accommodating cylinder and the upper wall.

To discharge the contents of the container body with this discharge cap, for example, tilt the container body so that the discharge hole faces downward. As a result, the content liquid flows from the container body through the opening into the inside of the valve accommodating cylinder, and further, the content liquid is discharged from the inside of the valve accommodating cylinder through the discharge hole. Specifically, the content liquid flows into the upper part and the lower part of the valve in the valve housing cylinder, respectively, and the content liquid flows from the inside of the valve housing cylinder to the discharge hole, so that a negative pressure acts on the valve. The valve is pulled toward the discharge hole in the valve accommodating cylinder. The valve moves toward the discharge hole and closes the discharge hole at the rising end position, so that the discharge of the content liquid is stopped. As a result, a predetermined amount of the content liquid is discharged.

The discharge cap of the present invention is provided with an opening and a guide wall portion extending in the circumferential direction at a position different from the opening in the circumferential direction between the valve accommodating cylinder and the upper wall. For this reason, the guide wall portion provides a rectifying action that guides the content liquid to the opening, and suppresses (arranges) the turbulence of the content liquid flow from the outside to the inside of the valve accommodating cylinder and from this inside to the discharge hole. Can be done. As a result, a negative pressure can be stably applied to the valve in the valve accommodating cylinder. It can move up and move stably, and can stably discharge a predetermined amount of the content liquid.

In the discharge cap, the inner plug extends radially outward from the valve accommodating cylinder and has a lower wall defining a flow chamber for the content liquid between the inner plug and the upper wall, and the lower wall is the lower wall. The valve accommodating cylinder has a first communication hole penetrating the wall, and the valve accommodating cylinder has a bottomed cylinder shape having a peripheral wall and a bottom wall. The guide rib has a tubular hole and a guide rib that is located below the lower wall and protrudes radially outward from the peripheral wall and extends in the vertical direction. The upper end of the guide rib is the first communication hole. It is preferable that the lower end portion is connected or close to the cylinder hole and is connected or close to the cylinder hole.

In this case, when the residual liquid accumulated in the distribution chamber flows downward from the first communication hole through the guide rib after discharging the content liquid, this liquid remains in the valve accommodating cylinder through the cylinder hole. It acts to draw out the residual liquid. Therefore, the residual liquid in the valve accommodating cylinder can be stably returned to the container body, and the valve in the valve accommodating cylinder is stably returned to the original standby position (initial position) before the discharge operation. As a result, a predetermined amount of the content liquid can be stably discharged even at the next discharge operation.

The discharge cap has a first hinge that connects the inner plug and the cover body, a lid body that covers the cover body from above, and the cover body and the lid body that sandwich the cap shaft in the radial direction. The inner plug comprises a second hinge connected on the opposite side of the first hinge, the inner plug has a lower wall extending radially outward from the valve accommodating cylinder, and the lower wall penetrates the lower wall. The first communication hole located between the valve accommodating cylinder and the second hinge when viewed from the vertical direction, and the valve accommodating cylinder and the first hinge which penetrate the lower wall and are viewed from the vertical direction. It has a second communication hole located between them, the opening area of the first communication hole is equal to or larger than the opening area of the discharge hole, and the opening area of the second communication hole is the opening area of the discharge hole. The following is preferable.

In this case, the discharge cap has a first discharge mode in which a predetermined amount of liquid is discharged from the discharge hole with the lid open around the second hinge, and a cover body open around the first hinge. , A second discharge mode in which the content liquid in an amount desired by the user is discharged from the first communication hole.

In the first discharge mode, by tilting the container body so that the second hinge is on the upper side, the liquid content of the container body flows from the first communication hole and the second communication hole to the discharge hole through the opening. .. At this time, since the opening area (flow path cross-sectional area) of the second communication hole is smaller than the opening area of the discharge hole, a large amount of the content liquid flows into the space (distribution chamber) between the lower wall and the upper wall. This is suppressed, and the spouting of the content liquid from the discharge hole due to the water hammer phenomenon is prevented.

In the second discharge mode, the container body is tilted so that the first hinge is on the upper side, and the content liquid is discharged through the first communication hole having a large opening area, whereby efficient discharge can be performed.

In the discharge cap, the guide wall portion preferably extends over half a circumference or more of the valve accommodating cylinder in the circumferential direction.

In this case, the rectifying action of guiding the content liquid to the opening by the guide wall is more stable. Therefore, the valve stably rises and moves with each discharge operation, and a predetermined amount of the content liquid can be stably discharged.

According to the discharge cap according to one aspect of the present invention, a predetermined amount of the content liquid can be stably discharged.

FIG. 1 is a vertical sectional view showing a discharge cap of the present embodiment. FIG. 2 is a top view showing the discharge cap of the present embodiment, showing a state in which the cover body is opened, and the valve is not shown. FIG. 3 is a vertical cross-sectional view showing the discharge cap of the present embodiment, and shows a state immediately after the content liquid is discharged.

Hereinafter, the discharge cap 10 according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge cap 10 of the present embodiment is attached to the mouth portion 51 of the container body 50. The discharge cap 10 may be detachably attached to the mouth portion 51 or may be detachably attached to the mouth portion 51. The container body 50 has a bottomed cylindrical shape, contains the content liquid inside, and is squeeze-deformable. The container body 50 may not be deformable by squeezing.

The discharge cap 10 includes an inner plug 1 attached to the mouth 51, a cover body 2, a first hinge 3 connecting the inner plug 1 and the cover body 2, a lid body 4, a cover body 2, and a lid body. A second hinge 5 for connecting the 4 is provided. Note that FIG. 1 shows a state in which the lid 4 is open. Although not particularly shown, the mouth portion 51, the inner plug 1, the cover body 2, and the lid body 4 are arranged coaxially with each other with the cap shaft O as a common axis in a state where the lid body 4 is closed.

In the present embodiment, the direction in which the cap shaft O extends, that is, the direction parallel to the cap shaft O is referred to as the vertical direction. The vertical direction may be paraphrased as the axial direction. The closed lid 4 and the mouth 51 are arranged at different positions in the vertical direction. Of the vertical directions, the direction from the mouth 51 to the lid 4 is called the upper side, and the direction from the lid 4 to the mouth 51 is called the lower side.
The direction orthogonal to the cap axis O in the plan view from the vertical direction is called the radial direction. Of the radial directions, the direction closer to the cap shaft O is called the radial inner side, and the direction away from the cap shaft O is called the radial outer side. Further, the second hinge 5 is arranged on the side opposite to the first hinge 3 that sandwiches the cap shaft O in the radial direction. In the present embodiment, of the radial directions, a predetermined direction passing through the first hinge 3 and the second hinge 5 is referred to as a front-rear direction. Of the front-rear directions, the direction from the second hinge 5 to the first hinge 3 is called the front side, and the direction from the first hinge 3 to the second hinge 5 is called the rear side.
The direction that orbits around the cap axis O is called the circumferential direction.

The inner plug 1 has an outer cylinder 11, an inner cylinder 12, a connecting flange 13, a valve accommodating cylinder 14, a valve 15, and a lower wall 16.
The outer cylinder 11 has a cylindrical shape extending in the vertical direction, and fits on the radial outer side of the mouth portion 51. The outer cylinder 11 has a lower protrusion 11a protruding radially inward from the lower end of the inner peripheral surface of the outer cylinder 11 and an upper protrusion 11b protruding radially outward from the upper end of the outer peripheral surface of the outer cylinder 11. .. The lower protrusion 11a comes into contact with the mouth protrusion 51a projecting radially outward from the outer peripheral surface of the mouth 51 from below. As a result, the outer cylinder 11 is undercut fitted to the mouth portion 51. That is, the inner plug 1 is attached to the mouth portion 51 by undercut fitting.

The inner cylinder 12 has a tubular shape extending in the vertical direction, and fits inside the mouth portion 51 in the radial direction. The connecting flange 13 has a circular ring plate shape centered on the cap shaft O, and connects the outer cylinder 11 and the inner cylinder 12. The pair of plate surfaces of the connecting flange 13 face in the vertical direction. The lower surface of the pair of plate surfaces of the connecting flange 13 comes into contact with the upper end opening edge of the mouth portion 51 from above. Specifically, the connecting flange 13 is formed between an intermediate portion of the inner peripheral surface of the outer cylinder 11 located between the upper end and the lower end and between the upper end and the lower end of the outer peripheral surface of the inner cylinder 12. Connect with the located intermediate part.
In the illustrated example, the wall thickness of the upper portion of the inner cylinder 12 located on the upper side of the connecting flange 13 is thinner than the wall thickness of the lower portion located on the lower side of the connecting flange 13. Further, among the upper portions of the inner cylinder 12, the upper end edge of the front side portion is located below the upper end edge of the rear side portion.

The valve accommodating cylinder 14 is arranged radially inward from the inner cylinder 12. The valve accommodating cylinder 14 extends in the vertical direction about the cap shaft O. The valve accommodating cylinder 14 has a bottomed cylinder shape having a peripheral wall 14a and a bottom wall 14b. The peripheral wall 14a has a cylindrical shape extending in the vertical direction, and the bottom wall 14b has a plate shape extending in the direction perpendicular to the cap axis O.

Further, the valve accommodating cylinder 14 has a retaining protrusion 14c, an opening 17, a guide wall portion 18, a cylinder hole 14d, and a guide rib 14e.
The retaining protrusion 14c projects radially inward from the upper end of the inner peripheral surface of the peripheral wall 14a. The retaining protrusion 14c has a rib shape extending in the circumferential direction, and is an annular shape centered on the cap shaft O in the illustrated example.

The opening 17 is located at the upper end of the peripheral wall 14a and communicates the inside and the outside of the valve accommodating cylinder 14. The opening 17 is formed so as to cut out a part of the upper end opening edge of the peripheral wall 14a in the circumferential direction. The opening 17 is located at the rear side portion of the upper end portion of the peripheral wall 14a. The opening 17 is arranged above the retaining protrusion 14c and extends in the circumferential direction.

The guide wall portion 18 is located at the upper end portion of the peripheral wall 14a and partitions the inside and the outside of the valve accommodating cylinder 14. The guide wall portion 18 is located on the front side portion at the upper end portion of the peripheral wall 14a. The guide wall portion 18 is arranged at a position in the circumferential direction different from that of the opening 17. The guide wall portion 18 is arranged above the retaining protrusion 14c and extends in the circumferential direction.

As shown in FIG. 2, the guide wall portion 18 extends over half a circumference or more of the valve accommodating cylinder 14 in the circumferential direction. Specifically, as shown in FIG. 2, the guide wall portion 18 is arranged on the upper end portion of the peripheral wall 14a over a range of 180 ° or more and 315 ° or less at a central angle centered on the cap axis O when viewed from the vertical direction. Will be done. In the illustrated example, the guide wall portion 18 extends over approximately half a circumference.

As shown in FIG. 1, the cylinder hole 14d is arranged at the lower end of the valve accommodating cylinder 14. The cylinder hole 14d is arranged in the rear portion of the valve accommodating cylinder 14. The tubular hole 14d opens at the connection portion between the peripheral wall 14a and the bottom wall 14b.

The guide rib 14e projects radially outward from the peripheral wall 14a and extends in the vertical direction. The guide rib 14e is arranged on the rear side portion of the peripheral wall 14a. That is, the guide rib 14e protrudes from the outer peripheral surface of the peripheral wall 14a toward the rear side. The guide rib 14e is arranged in the lower portion of the peripheral wall 14a. The radial height of the guide rib 14e, that is, the height of protrusion from the peripheral wall 14a is constant along the vertical direction in the portion other than the lower end portion of the guide rib 14e, and decreases in the lower end portion toward the lower side. The guide rib 14e is located directly above the cylinder hole 14d. The lower end of the guide rib 14e is connected to or close to the cylinder hole 14d.

The valve 15 is arranged so as to be vertically movable inside the valve accommodating cylinder 14. The valve 15 has a bottomed tubular shape having a valve peripheral wall 15a and a valve bottom wall 15b.
The valve peripheral wall 15a has a cylindrical shape extending in the vertical direction. The outer peripheral surface of the valve peripheral wall 15a slidably contacts or faces the inner peripheral surface of the peripheral wall 14a with a gap. The outer diameter of the lower portion of the valve peripheral wall 15a is larger than the outer diameter of the upper portion. The outer diameter of the upper portion of the valve peripheral wall 15a decreases toward the upper side.
The valve bottom wall 15b has a plate shape that extends in a direction perpendicular to the cap shaft O. The lower surface of the valve bottom wall 15b is in contact with the upper surface of the bottom wall 14b so as to be separable.

The lower wall 16 extends radially outward from the valve accommodating cylinder 14. The lower wall 16 has an annular plate shape centered on the cap shaft O, and a pair of plate surfaces face in the vertical direction. The lower wall 16 is located on the upper side toward the outer side in the radial direction. The inner peripheral portion of the lower wall 16 is connected to an intermediate portion of the outer peripheral surface of the peripheral wall 14a located between the upper end portion and the lower end portion in the vertical direction. The outer peripheral portion of the lower wall 16 is connected to the lower end portion of the inner cylinder 12. The guide rib 14e is located below the lower wall 16. The upper end of the guide rib 14e is connected to the lower surface of the lower wall 16.

As shown in FIGS. 1 and 2, the rear end portion 16a of the lower wall 16 located on the rear side of the valve accommodating cylinder 14 is located on the lower side of the portion other than the rear end portion 16a. A step portion 16d is formed between the rear end portion 16a of the lower wall 16 and a portion other than the rear end portion 16a. The step portion 16d has a surface facing the rear side, and extends in the left-right direction orthogonal to the front-rear direction when viewed from the vertical direction.

The lower wall 16 has a first communication hole 16b and a second communication hole 16c.
The first communication hole 16b penetrates the lower wall 16 in the vertical direction. The first communication hole 16b is arranged at the rear end portion 16a of the lower wall 16. The first communication hole 16b is located on the rear side of the valve accommodating cylinder 14. As shown in FIG. 2, in the present embodiment, the first communication hole 16b is a hole extending in an arc shape along the circumferential direction. With the cover body 2 closed (see FIG. 1), the first communication hole 16b is located between the valve accommodating cylinder 14 and the second hinge 5 when viewed in the vertical direction. Further, the upper end portion of the guide rib 14e is connected to or close to the first communication hole 16b.

The second communication hole 16c penetrates the lower wall 16 in the vertical direction. The second communication hole 16c is arranged in a portion other than the rear end portion 16a of the lower wall 16. The second communication hole 16c is located on the front side of the valve accommodating cylinder 14. In the present embodiment, the second communication hole 16c has a circular hole shape. The second communication hole 16c is located between the valve accommodating cylinder 14 and the first hinge 3 when viewed from the vertical direction.
The opening area (flow path cross-sectional area) of the first communication hole 16b is larger than the opening area of the second communication hole 16c.

As shown in FIG. 1, the cover body 2 is arranged on the upper side of the inner plug 1. The cover body 2 has a cover cylinder 21, an upper wall 22 that covers the inner plug 1 from above, a nozzle 23 that protrudes upward from the upper wall 22, and a discharge that penetrates the nozzle 23 in the vertical direction and penetrates the upper wall 22. It has a hole 24 and a seal cylinder 25 that hangs down from the upper wall 22.

The cover cylinder 21 extends in the vertical direction about the cap shaft O. The cover cylinder 21 is located above the outer cylinder 11. The lower end portion of the cover cylinder 21 is fitted on the radial outer side of the upper end portion of the outer cylinder 11. The cover cylinder 21 is detachably attached to the outer cylinder 11. The cover cylinder 21 is connected to the outer cylinder 11 via the first hinge 3. The cover cylinder 21 is connected to the lid peripheral wall 4a of the lid body 4 described later via the second hinge 5.

The cover cylinder 21 has an inner peripheral protrusion 21a, an inner peripheral rib 21b, and an outer peripheral protrusion 21c.
The inner peripheral protrusion 21a projects radially inward from the lower end of the inner peripheral surface of the cover cylinder 21. The inner peripheral protrusion 21a comes into contact with the upper protrusion 11b of the outer cylinder 11 from below. As a result, the cover cylinder 21 is undercut fitted to the outer cylinder 11.

The inner peripheral rib 21b projects radially inward from the inner peripheral surface of the cover cylinder 21 and extends in the vertical direction. The inner peripheral rib 21b is arranged away from the inner peripheral protrusion 21a on the upper side. A plurality of inner peripheral ribs 21b are provided at intervals in the circumferential direction. The lower end of the inner peripheral rib 21b comes into contact with the upper end opening edge of the outer cylinder 11 from above.
The outer peripheral protrusion 21c projects radially outward from the upper end portion of the outer peripheral surface of the cover cylinder 21.

The upper wall 22 extends radially inward from the inner peripheral surface of the cover cylinder 21. The upper wall 22 has a plate shape centered on the cap shaft O, and a pair of plate surfaces face in the vertical direction. The upper wall 22 covers the inner cylinder 12, the lower wall 16, the valve accommodating cylinder 14, and the valve 15 from above. That is, the inner cylinder 12, the lower wall 16, the valve accommodating cylinder 14, and the valve 15 are arranged below the upper wall 22.
In the present embodiment, the outer peripheral portion of the upper wall 22 is located above the portion other than the outer peripheral portion. The outer peripheral portion of the upper wall 22 overlaps with the inner cylinder 12 when viewed from the vertical direction. In the illustrated example, the wall thickness of the portion other than the outer peripheral portion is thicker than that of the outer peripheral portion of the upper wall 22.

The upper wall 22 has a bulging portion 22a that bulges downward from the lower surface of the upper wall 22. The bulging portion 22a has a circular shape centered on the cap shaft O when viewed from below. As shown in FIG. 1, with the cover body 2 closed, the upper end surface of the guide wall portion 18 contacts the lower surface of the upper wall 22 from below, and the inner peripheral edge of the upper end of the guide wall portion 18 bulges. It comes into contact with the outer peripheral edge of the portion 22a along the circumferential direction. The guide wall portion 18 closes between the valve accommodating cylinder 14 and the upper wall 22.
Further, the opening 17 is arranged between the valve accommodating cylinder 14 and the upper wall 22. The opening 17 is provided between the upper end of the peripheral wall 14a and the lower surface of the upper wall 22, and communicates the inside and the outside of the valve accommodating cylinder 14.

The nozzle 23 is projected onto the upper surface of the upper wall 22. The nozzle 23 extends in the vertical direction about the cap shaft O. In the illustrated example, the upper end portion of the nozzle 23 has a lip shape that extends outward in the radial direction.

The discharge hole 24 extends in the vertical direction about the cap shaft O and opens to the upper end portion of the nozzle 23 and the lower surface of the upper wall 22. Specifically, the lower end portion of the discharge hole 24 opens on the lower surface of the bulging portion 22a. In the illustrated example, the inner diameter of the lower end portion of the discharge hole 24 is smaller than the inner diameter of the portion other than the lower end portion.

The inside of the valve accommodating cylinder 14 communicates with the discharge hole 24. The valve 15 comes into contact with the upper wall 22 from below at the rising end position where the inside of the valve accommodating cylinder 14 is moved to the uppermost position. Specifically, the upper end opening edge of the valve peripheral wall 15a comes into contact with the lower surface of the bulging portion 22a from below over the entire circumference in the circumferential direction. The valve 15 cuts off communication between the inside of the valve accommodating cylinder 14 and the discharge hole 24 at the rising end position.
The opening area of the first communication hole 16b is equal to or larger than the opening area of the discharge hole 24, and the opening area of the second communication hole 16c is equal to or smaller than the opening area of the discharge hole 24. In the present embodiment, the opening area of the discharge hole 24 corresponds to, for example, the cross-sectional area of the flow path at the lower end of the discharge hole 24.

The seal cylinder 25 is projected downward from the boundary portion between the outer peripheral portion of the upper wall 22 and the portion other than the outer peripheral portion of the lower surface of the upper wall 22. The seal cylinder 25 extends in the vertical direction about the cap shaft O. The seal cylinder 25 fits inside the inner cylinder 12 in the radial direction. In the illustrated example, the wall thickness of the seal cylinder 25 becomes thinner toward the lower side. The lower end portion of the front side portion of the seal cylinder 25 is located below the lower end portion of the rear side portion.
The seal cylinder 25 has a seal protrusion 25a. The seal protrusion 25a projects radially outward from the outer peripheral surface of the seal cylinder 25, and comes into contact with the inner peripheral surface of the inner cylinder 12 over the entire circumference in the circumferential direction.

The lower wall 16 defines a distribution chamber 26 for the content liquid between the lower wall 16 and the upper wall 22 in the vertical direction. Specifically, the space partitioned by the lower wall 16, the upper wall 22, the inner cylinder 12, the seal cylinder 25, and the peripheral wall 14a is referred to as the distribution chamber 26. That is, the discharge cap 10 has a distribution chamber 26. In the distribution room 26, the content liquid is distributed or temporarily stored.

Although not particularly shown, the lid 4 covers the cover 2 from above with the lid 4 closed. The lid 4 is detachably attached to the cover 2.
The lid body 4 has a topped cylinder shape having a lid peripheral wall 4a and a lid top wall 4b. Further, the lid body 4 has a lid protrusion 4c. The lid protrusion 4c projects radially inward from the lower end of the inner peripheral surface of the lid peripheral wall 4a. With the lid 4 closed, the lid protrusion 4c comes into contact with the outer peripheral protrusion 21c of the cover cylinder 21 from below. As a result, the lid 4 is undercut fitted to the cover cylinder 21.

Next, the action of discharging the content liquid of the container body 50 by using the discharge cap 10 of the present embodiment will be described.
As shown in FIG. 1, the discharge cap 10 has a first discharge mode in which a predetermined amount of the content liquid is discharged from the discharge hole 24 with the lid 4 opened around the second hinge 5, and FIG. 2 shows the discharge cap 10. As described above, there is a second discharge mode in which the content liquid desired by the user is discharged from the first communication hole 16b with the cover body 2 opened around the first hinge 3.

In the first discharge mode shown in FIG. 1, in order to discharge the content liquid of the container body 50 by the discharge cap 10, for example, the container has the discharge hole 24 facing downward and the second hinge 5 facing upward. Tilt the main body 50. As a result, the content liquid flows from the container body 50 into the inside of the valve accommodating cylinder 14 through the distribution chamber 26 and the opening 17, and further, the content liquid is discharged from the inside of the valve accommodating cylinder 14 through the discharge hole 24. Specifically, the content liquid flows into the upper portion and the lower portion of the valve 15 in the valve accommodating cylinder 14, respectively, and the content liquid flows from the inside of the valve accommodating cylinder 14 to the discharge hole 24, which is negative to the valve 15. Pressure acts and the valve 15 is drawn toward the discharge hole 24 in the valve accommodating cylinder 14. The valve 15 moves toward the discharge hole 24 and closes the discharge hole 24 at the rising end position, so that the discharge of the content liquid is stopped. As a result, a predetermined amount of the content liquid is discharged.

In the second discharge mode shown in FIG. 2, the container body 50 is tilted so that the first hinge 3 is on the upper side, and the content liquid desired by the user is discharged through the first communication hole 16b. At this time, the second communication hole 16c functions as an air replacement hole for allowing air to flow into the container body 50 from the outside of the container.

As shown in FIG. 1, the discharge cap 10 of the present embodiment described above has an opening 17 between the valve accommodating cylinder 14 and the upper wall 22 and a circumferential position different from the opening 17. An extending guide wall portion 18 is provided. Therefore, the guide wall portion 18 provides a rectifying action for guiding the content liquid to the opening 17, and suppresses turbulence in the flow of the content liquid from the outside to the inside of the valve accommodating cylinder 14 and from the inside to the discharge hole 24. Can be (arranged). As a result, a negative pressure can be stably applied to the valve 15 in the valve accommodating cylinder 14, and for example, even when the force for squeezing the container body 50 is small or when the squeeze deformation is not performed, each discharge operation is performed. The valve 15 stably rises and moves, and a predetermined amount of the content liquid can be stably discharged.

Further, in the present embodiment, the upper end portion of the guide rib 14e is connected to or close to the first communication hole 16b, and the lower end portion of the guide rib 14e is connected to or close to the tubular hole 14d.
In this case, as shown in FIG. 3, after the content liquid is discharged, when the residual liquid accumulated in the distribution chamber 26 flows down from the first communication hole 16b through the guide rib 14e, this liquid flows down. Through the hole 14d, it acts to draw out the residual liquid remaining in the valve accommodating cylinder 14. Therefore, the residual liquid in the valve accommodating cylinder 14 can be stably returned to the container body 50, and the valve 15 in the valve accommodating cylinder 14 is in the original standby position (initial position) before the discharge operation shown in FIG. ) Stablely returned. As a result, a predetermined amount of the content liquid can be stably discharged even at the next discharge operation.

Further, in the present embodiment, the rear end portion 16a of the lower wall 16 is located below the portion other than the rear end portion 16a, and the first communication hole 16b having a large opening area in the rear end portion 16a is located. Is open. Therefore, after the discharge operation, the residual liquid is stably returned from the distribution chamber 26 to the container body 50 through the first communication hole 16b, and it is possible to prevent the liquid from remaining in the distribution chamber 26.

Further, in the present embodiment, the opening area of the first communication hole 16b is equal to or larger than the opening area of the discharge hole 24, and the opening area of the second communication hole 16c is equal to or smaller than the opening area of the discharge hole 24.
In the first discharge mode, the container body 50 is tilted so that the second hinge 5 is on the upper side, so that the liquid content of the container body 50 passes through the opening 17 from the first communication hole 16b and the second communication hole 16c. , Flows into the discharge hole 24. At this time, since the opening area (flow path cross-sectional area) of the second communication hole 16c is equal to or less than the opening area of the discharge hole 24, a large amount of the content liquid is suppressed from flowing into the distribution chamber 26, which is caused by the water hammer phenomenon. The ejection of the content liquid from the discharge hole 24 is prevented.
In the second discharge mode, the container body 50 is tilted so that the first hinge 3 is on the upper side, and the content liquid is discharged through the first communication hole 16b having a large opening area, whereby efficient discharge can be performed. ..

Further, in the present embodiment, the guide wall portion 18 extends over half a circumference or more of the valve accommodating cylinder 14 in the circumferential direction.
In this case, the rectifying action of guiding the content liquid to the opening 17 by the guide wall 18 becomes more stable. Therefore, the valve 15 stably rises and moves with each discharge operation, and a predetermined amount of the content liquid can be stably discharged.

Further, in the present embodiment, as shown in FIG. 2, the guide wall portion 18 is arranged over a range of 180 ° or more and 315 ° or less at a central angle centered on the cap shaft O when viewed from the vertical direction.
When the central angle is 180 ° or more, the rectifying action of guiding the content liquid to the opening 17 by the guide wall portion 18 is more stably performed.
When the central angle is 315 ° or less, it is possible to prevent the opening area of the opening 17 from becoming too small. Therefore, it is possible to prevent the discharge amount per unit time from becoming too small, that is, it is possible to stably discharge a predetermined amount of the content liquid while maintaining good discharge operability.

The present invention is not limited to the above-described embodiment, and the configuration can be changed without departing from the spirit of the present invention, for example, as described below.

In the above-described embodiment, the configuration in which the valve accommodating cylinder 14 has the guide wall portion 18 and the opening portion 17 has been described, but the present invention is not limited to this. Although not particularly shown, the guide wall portion 18 may project downward from the lower surface of the upper wall 22 and extend in the circumferential direction. In this case, the lower end surface of the guide wall portion 18 comes into contact with the upper end opening edge of the peripheral wall 14a from above, thereby closing the space between the valve accommodating cylinder 14 and the upper wall 22. Further, the opening 17 is arranged at a position different from that of the guide wall portion 18 in the circumferential direction, and forms a part of the upper wall 22.
Further, the guide wall portion 18 and the opening portion 17 may be provided in the valve accommodating cylinder 14 and the upper wall 22, respectively.
That is, in the present invention, at least one of the valve accommodating cylinder 14 and the upper wall 22 has an opening 17 and a guide wall portion 18.

In the above-described embodiment, the example in which the inner plug 1 is attached to the mouth portion 51 by undercut fitting is given, but the present invention is not limited to this. The inner plug 1 may be attached to the mouth portion 51 by, for example, screwing.

In addition, it is possible to replace the constituent elements in the above-described embodiment with well-known constituent elements as appropriate without departing from the spirit of the present invention, and the above-described embodiments and modifications may be appropriately combined.

1 ... Inner plug, 2 ... Cover body, 3 ... 1st hinge, 4 ... Lid body, 5 ... Second hinge, 10 ... Discharge cap, 14 ... Valve accommodating cylinder, 14a ... Circumferential wall, 14b ... Bottom wall, 14d ... Cylinder Hole, 14e ... Guide rib, 15 ... Valve, 16 ... Lower wall, 16b ... First communication hole, 16c ... Second communication hole, 17 ... Opening, 18 ... Guide wall, 22 ... Upper wall, 24 ... Discharge hole , 26 ... Distribution room, 50 ... Container body, 51 ... Mouth, O ... Cap shaft

Claims (4)

An inner plug attached to the mouth of the container body that holds the contents liquid,
A cover body arranged on the upper side of the inner plug is provided.
The cover body
The upper wall that covers the inner plug from above and
It has a discharge hole that penetrates the upper wall.
The inner plug is
A valve accommodating cylinder that is arranged under the upper wall and extends in the vertical direction, and the inside communicates with the discharge hole.
It has a valve that is vertically movable inside the valve accommodating cylinder and that cuts off communication between the inside of the valve accommodating cylinder and the discharge hole at a rising end position.
At least one of the valve accommodating cylinder and the upper wall
An opening arranged between the valve accommodating cylinder and the upper wall and communicating the inside and the outside of the valve accommodating cylinder,
It has a guide wall portion that is arranged at a position in the circumferential direction different from the opening, extends in the circumferential direction, and closes between the valve accommodating cylinder and the upper wall.
Discharge cap. The inner plug has a lower wall that extends radially outward from the valve accommodating cylinder and defines a flow chamber for the content liquid between the inner plug and the upper wall.
The lower wall has a first communication hole penetrating the lower wall.
The valve accommodating cylinder has a bottomed cylinder having a peripheral wall and a bottom wall, and has a bottomed cylinder shape.
The valve accommodating cylinder
A tubular hole that opens at the connection portion between the peripheral wall and the bottom wall,
It has a guide rib located below the lower wall, projecting radially outward from the peripheral wall, and extending in the vertical direction.
The upper end of the guide rib is connected to or close to the first communication hole, and the lower end thereof is connected to or close to the tubular hole.
The discharge cap according to claim 1. A first hinge connecting the inner plug and the cover body,
A lid that covers the cover from above, and a lid that covers the cover from above.
A second hinge that connects the cover body and the lid body on the side opposite to the first hinge that sandwiches the cap shaft in the radial direction is provided.
The inner plug has a lower wall extending radially outward from the valve accommodating cylinder.
The lower wall
A first communication hole that penetrates the lower wall and is located between the valve accommodating cylinder and the second hinge when viewed from above and below.
It has a second communication hole that penetrates the lower wall and is located between the valve accommodating cylinder and the first hinge when viewed from above and below.
The opening area of the first communication hole is equal to or larger than the opening area of the discharge hole.
The opening area of the second communication hole is equal to or smaller than the opening area of the discharge hole.
The discharge cap according to claim 1 or 2. The guide wall portion extends in the circumferential direction over half a circumference or more of the valve accommodating cylinder.
The discharge cap according to any one of claims 1 to 3.

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