Discharge cap

Abstract

To provide a discharge cap capable of preventing the contents from spilling from a discharge port, after discharge of the contents.SOLUTION: According to a discharge cap 1 attached to a mouth 2a of a container body 2 that forms a storage space S for storing the contents, the discharge cap 1 comprises a channel formation part 4 that forms a channel 3 extending from a passage port 3a communicating with the storage space S to a discharge port 3b, and a valve body 5a for partitioning the channel 3 to an upstream channel 3c and a downstream channel 3d by moving from an open position to a closed position. The channel formation part 4 comprises an inner cylinder 6 that forms the upstream channel 3c on a radial direction inner side, an outer cylinder 7, and a movable part 8 that moves in the axial direction of the inner cylinder 6 from a non-extension position to an extension position with respect to the inner cylinder 6 and the outer cylinder 7, thereby forming an extension space 3d1 for extending the downstream channel 3d between the outer peripheral face of the inner cylinder 6 and the inner peripheral face of the outer cylinder 7.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a dispensing cap. [Background technology]

[0002] A discharge cap is known which is attached to the mouth of a container body which forms a storage space for storing contents, and which has a flow path forming portion which forms a flow path extending from a passage opening which communicates with the storage space to the discharge port, and a valve body which separates the flow path into an upstream flow path and a downstream flow path by moving from an open position to a closed position (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-171144 A Summary of the Invention [Problem to be solved by the invention]

[0004] It is preferable that the above-mentioned discharge cap can prevent the contents from spilling from the discharge port after the contents are discharged.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a discharge cap that can prevent the contents from spilling from the discharge port after the contents are discharged. [Means for solving the problem]

[0006] One aspect of the present invention is as follows.

[0007] [1] A discharge cap attached to a mouth of a container body that forms a storage space for storing contents, a flow path forming portion that forms a flow path extending from a passage port communicating with the accommodation space to a discharge port; a valve body that divides the flow path into an upstream flow path and a downstream flow path by moving from an open position to a closed position, The flow path forming portion is an ejection cap having an inner tube that forms the upstream flow path radially inward, an outer tube, and a movable portion that moves in the axial direction of the inner tube from a non-extended position to an extended position relative to the inner tube and the outer tube, thereby forming an expanded space that expands the downstream flow path between the outer peripheral surface of the inner tube and the inner peripheral surface of the outer tube.

[0008] [2] the flow passage forming portion has a connection portion connecting the inner cylinder and the outer cylinder, The connection portion has a contact portion that contacts the valve body in the closed position, and a through hole that is located radially outside the inner tube relative to the contact portion and leads to the expansion space.

[0009] [3] The discharge cap described in [2] has an inner surface of the outer tube having a contact portion that is in tight contact with the movable part around the entire circumference when the outer tube is in the expanded position, and a groove portion that extends from between the contact portion and the through hole to the through hole and allows the contents to flow from the storage space toward the through hole when the movable part is in the non-expanded position.

[0010] [4] The discharge cap described in any one of [1] to [3], wherein the movable part has an inner wall extending along the outer peripheral surface of the inner tube, an outer peripheral wall extending along the inner peripheral surface of the outer tube, and a connecting wall connecting the inner wall and the outer peripheral wall.

[0011] [5] The discharge cap according to [4], wherein the connecting wall connects an upper end of the inner wall in an upright position to an upper end of the outer wall.

[0012] [6] the movable portion has an inner circumferential wall extending along the outer circumferential surface of the inner cylinder, The inner circumferential wall extends downward beyond a lower end of the inner tube in an upright position in the non-extended position, The discharge cap described in any one of [1] to [5], wherein the movable part has the passage opening penetrating the inner wall and an end wall extending radially inward from the lower end of the inner wall.

[0013] [7] The discharge cap described in [6], wherein the end wall has a recess for storing the contents.

[0014] [8] The movable portion has a shaft member extending upward from the end wall in an upright position, The discharge cap described in [6], wherein the shaft member can be pushed downward in an upright position by the valve body when the valve body moves from the open position to the closed position.

[0015] [9] a cap body having the discharge port and attached to the mouth portion; an inner plug having the inner cylinder and attached to the inside of the cap body; a valve member including a cylindrical valve support portion attached between the cap body and the inner plug, the valve body located radially inward from the valve support portion, and a biasing portion comprising a plurality of elastic bodies connecting the valve body to the valve support portion and biasing the valve body from the open position toward the closed position; The discharge cap described in any one of [1] to [8] is configured with a movable part that is attached and held on the inner plug so that it can move in the axial direction of the inner cylinder from the non-extended position to the extended position.

[0016]

[10] [1] to [9], comprising the discharge cap and the container body; The container body has a mouth, a body, and a bottom in this order, is formed by an inner layer and an outer layer that define the storage space therein, and has an inlet, The inlet introduces outside air between the inner layer and the outer layer by deformation of the inner layer, which causes the storage space to contract as the content is discharged.

[0017]

[11] The mouth portion has the inlet, The discharge cap has a vent hole and a vent valve body, The discharge container has an air passage extending from the air vent to the inlet, The discharge container according to

[10] , wherein the ventilation valve body divides the ventilation passage into an upstream air passage and a downstream air passage by moving from an open position to a closed position. Effect of the Invention

[0018] According to the present invention, it is possible to provide a discharge cap that can prevent the contents from spilling from the discharge port after the contents are discharged. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a cross-sectional view showing a discharge container according to a first embodiment of the present invention. [Diagram 2] FIG. 4 is a cross-sectional view showing a dispensing container according to a second embodiment of the present invention in a state before dispensing. [Diagram 3] 3 is a cross-sectional view showing the dispensing container shown in FIG. 2 in a dispensing state. FIG. [Figure 4] 3 is a cross-sectional view taken along line AA in FIG. 2. [Diagram 5] FIG. 11 is a cross-sectional view showing a dispensing container according to a third embodiment of the present invention in a state before dispensing. [Figure 6] 6 is a cross-sectional view showing the dispensing container shown in FIG. 5 in a dispensing state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] As shown in FIG. 1, in the first embodiment of the present invention, the discharge cap 1 is attached to the mouth 2a of the container body 2 which forms the storage space S for storing the contents, and has a flow path forming part 4 which forms a flow path 3 extending from a passage port 3a which communicates with the storage space S to a discharge port 3b, and a valve body 5a which divides the flow path 3 into an upstream flow path 3c and a downstream flow path 3d by moving from an open position (not shown) to a closed position (position shown in FIG. 1). The flow path forming part 4 has an inner tube 6 which forms the upstream flow path 3c radially inward, an outer tube 7, and a movable part 8 which moves in the axial direction of the inner tube 6 from a non-expanded position (not shown) to an expanded position (position shown in FIG. 1) relative to the inner tube 6 and the outer tube 7, thereby forming an expanded space 3d1 which expands the downstream flow path 3d between the outer peripheral surface of the inner tube 6 and the inner peripheral surface of the outer tube 7.

[0022] 1, after the contents of the storage space S are discharged from the discharge port 3b through the flow path 3 of the flow path forming part 4, the valve body 5a moves from the open position to the closed position to separate the flow path 3 into the upstream flow path 3c and the downstream flow path 3d, thereby preventing outside air from entering the storage space S through the flow path 3, and thus maintaining the quality of the contents at a good level. In addition, after the contents are discharged, the movable part 8 moves from the non-expanded position to the expanded position, thereby sucking back (i.e., drawing in) the contents remaining in the discharge port 3b toward the expansion space 3d1, thereby preventing the contents from spilling out. Furthermore, after the contents are sucked back into the expansion space 3d1, the contents remain in the expansion space 3d1; however, when the contents are discharged again (i.e., by moving the valve body 5a from the closed position to the open position and discharging the contents through the flow path 3 extending from the passage port 3a leading to the storage space S to the discharge port 3b), the movable part 8 moves from the expanded position to the non-expanded position, so that the contents remaining in the expansion space 3d1 can also be discharged together.

[0023] The flow passage forming section 4 has a connection section 9 connecting the inner cylinder 6 and the outer cylinder 7, and the connection section 9 has a contact section 9a that contacts the valve body 5a in the closed position, and a through hole 9b that is located radially outside the inner cylinder 6 from the contact section 9a and leads to the expansion space 3d1. With the above configuration, the expansion space 3d1 that enables efficient suck back can be realized. From the viewpoint of realizing efficient suck back, it is preferable that the through hole 9b is made of a plurality of holes arranged in the circumferential direction as shown in the figure. Note that the through hole is not limited to this, and may be made of, for example, a single hole.

[0024] The movable part 8 has an inner peripheral wall 8a extending along the outer peripheral surface of the inner cylinder 6, an outer peripheral wall 8b extending along the inner peripheral surface of the outer cylinder 7, and a connecting wall 8c connecting the inner peripheral wall 8a and the outer peripheral wall 8b. According to the above configuration, it is possible to realize the movable part 8 that enables efficient suck back.

[0025] Between the inner peripheral surface of the outer tube 7 and the outer peripheral surface of the outer peripheral wall 8b, the liquid contents sucked back into the expansion space 3d1 enter due to surface tension, forming a minute gap 10 where the liquid forms a seal against air. According to the above configuration, the sliding resistance between the inner peripheral surface of the outer tube 7 and the outer peripheral surface of the outer peripheral wall 8b can be suppressed, so that the smooth movement of the movable part 8 for sucking back can be realized.

[0026] The connecting wall 8c connects the upper end of the inner circumferential wall 8a in the upright position (hereinafter, simply referred to as the upper side) to the upper end of the outer circumferential wall 8b. According to the above-mentioned configuration, it is possible to realize the movable part 8 that enables even more efficient suck-back.

[0027] The movable part 8 has an inner peripheral wall 8a extending along the outer peripheral surface of the inner tube 6, and the inner peripheral wall 8a extends downward beyond the lower end (hereinafter simply referred to as the lower side) of the inner tube 6 in the upright position in the non-expanded position, and the movable part 8 has a passage port 3a penetrating the inner peripheral wall 8a and an end wall 8d extending radially inward from the lower end of the inner peripheral wall 8a. According to the above configuration, when the contents are discharged, the movable part 8 can be easily raised from the expanded position to the non-expanded position by the flow of the contents that pass through the passage port 3a from the storage space S, pass through the upper side of the end wall 8d, rise and flow into the inner tube 6. Therefore, after the contents are discharged, the suck back by the movable part 8 can be stably generated. The passage port 3a is preferably composed of a plurality of holes arranged in the circumferential direction as shown in the figure, but is not limited to this, and may be composed of a single hole, for example. Note that the end wall 8d may not be provided, and an opening formed at the lower end of the inner peripheral wall 8a may be the passage port 3a.

[0028] The discharge cap 1 is composed of a cap body 11 having a discharge port 3b and attached to the mouth part 2a, an inner plug 12 having an inner cylinder 6 and attached to the inside of the cap body 11, a valve member 5 having a cylindrical valve support part 5b attached between the cap body 11 and the inner plug 12, a valve body 5a located radially inside the valve support part 5b, and a biasing part 5c made of a plurality of elastic bodies connecting the valve body 5a to the valve support part 5b and biasing the valve body 5a from the open position to the closed position, and a movable part 8 attached to and held by the inner plug 12 so as to be movable in the axial direction of the inner cylinder 6 from the non-expanded position to the expanded position. With the above configuration, the discharge cap 1 can be realized with a simple structure.

[0029] The inner peripheral surface of the inner peripheral wall 8a fits into the outer peripheral surface of the inner cylinder 6 so as to restrict downward movement from the expanded position. According to the above configuration, the movable part 8 can be realized with a simple structure. In this embodiment, the inner peripheral wall 8a (movable part 8) is restricted from moving downward from the expanded position by contact between the protrusions provided on both the inner peripheral surface of the inner peripheral wall 8a and the outer peripheral surface of the inner cylinder 6, and a recess is provided above the protrusion on the outer peripheral surface of the inner cylinder 6 so that the inner peripheral wall 8a (movable part 8) can move upward, but the configuration is not limited to this.

[0030] The cap body 11 has an upper top wall 11a having a discharge port 3b and an annular upper fitting portion 11a1, and a fitting tube 11b connected to the upper top wall 11a and attached to the mouth portion 2a, the inside plug 12 has an inner tube 6, a connecting portion 9, an outer tube 7, and a lower top wall 12a having an annular lower fitting portion 12a1, the upper end of the valve support portion 5b fits into the upper fitting portion 11a1, and the lower end of the valve support portion 5b fits into the lower fitting portion 12a1, and the flow path forming portion 4 is composed of the movable portion 8, the inner tube 6, the connecting portion 9, and the outer tube 7 of the inside plug 12, the valve support portion 5b, and a portion of the upper top wall 11a extending from the upper fitting portion 11a1 to the discharge port 3b. With the above configuration, the flow path forming portion 4 can be realized with a simple structure. It should be noted that the lower fitting portion 12a1 is formed by the outer peripheral surface of the outer cylinder 7, but is not limited thereto.

[0031] In this embodiment, the discharge container 13 has a discharge cap 1 and a container body 2, and the container body 2 has a mouth 2a, a body, and a bottom in this order, and is formed by an inner layer 2b and an outer layer 2c that form a storage space S on the inside, and has an inlet 14b, and the inlet 14b introduces outside air between the inner layer 2b and the outer layer 2c by the deformation of the inner layer 2b that contracts the storage space S accompanying the discharge of the contents. According to the above configuration, outside air equivalent to the volume of the discharged contents after the discharge of the contents can be introduced and retained between the inner layer 2b and the outer layer 2c instead of the storage space S, so that the amount of air retained in the storage space S can be reduced, and the quality of the contents can be maintained even better.

[0032] The mouth 2a has an inlet 14b, the discharge cap 1 has an air vent 14a and an air vent valve body 5d, the discharge container 13 has an air passage 14 extending from the air vent 14a to the inlet 14b, and the air vent valve body 5d divides the air passage 14 into an upstream air passage 14c and a downstream air passage 14d by moving from an open position to a closed position. According to the above configuration, when the contents are discharged by squeezing the container body 2, the air vent valve body 5d located in the closed position can prevent air between the outer layer body 2c and the inner layer body 2b from leaking through the air passage 14, so that the contents can be discharged smoothly.

[0033] The upper ceiling wall 11a has a vent hole 14a, and the valve member 5 has a vent valve body 5d and an elastic connecting portion 5e that connects the vent valve body 5d to the outer peripheral surface of the valve support portion 5b. According to the above configuration, the discharge cap 1 can be realized with an even simpler structure.

[0034] The connecting portion 9 has an annular protrusion 9c surrounding the central axis O of the inner cylinder 6, the contact portion 9a is formed by the upper surface of the annular protrusion 9c, the valve body 5a has an outer periphery 5a1 that contacts the contact portion 9a in the closed position, and the radially inner end of the biasing portion 5c is connected to the outer periphery 5a1 of the valve body 5a. According to the above configuration, the valve body 5a can be realized with a simple structure.

[0035] The upper top wall 11a has a discharge tube 11a2 that surrounds the central axis O of the inner tube 6 and forms a discharge port 3b on the radially inner side. According to the above-mentioned configuration, it is possible to realize a more efficient suck back.

[0036] The discharge cap 1 has a lid 15 that can open and close the discharge port 3b, and the lid 15 has a blocking body 15a that is in close contact with the inner circumferential surface of the discharge tube 11a2 when the lid 15 is in the closed position to close the discharge port 3b. According to the above configuration, the discharge port 3b can be blocked by the blocking body 15a by placing the lid 15 in the closed position.

[0037] The valve body 5a has a protruding portion 5a2 located on the central axis O of the inner cylinder 6 and protruding upward, and the lid body 15 has a pressing portion 15b that is pressed downward against the protruding portion 5a2 when the lid body 15 is in the closed position where the discharge port 3b is closed. According to the above configuration, by placing the lid body 15 in the closed position, the pressing portion 15b can hold the valve body 5a in the closed position. The lid body 15 is connected to the cap body 11 via the hinge portion 16 so as to be rotatable, but is not limited thereto.

[0038] The cap body 11 and the lid body 15 are formed as a one-piece molded product made of resin, the inner plug 12 and the movable part 8 are each formed as a one-piece molded product made of resin, and the valve member 5 is formed as a one-piece molded product made of rubber or elastomer, but is not limited to this.

[0039] As shown in the second embodiment of the present invention in Figs. 2 to 4, the discharge cap 1 may have a structure in which the inner peripheral surface of the outer cylinder 7 has a contact portion 7a that contacts the movable portion 8 over the entire circumference when the outer cylinder 7 is in the expanded position (position shown in Fig. 2), and a groove portion 7b that extends from between the contact portion 7a and the through hole 9b to the through hole 9b and allows the contents to flow from the storage space S toward the through hole 9b when the movable portion 8 is in the non-expanded position (position shown in Fig. 3). The number of grooves that constitute the groove portion 7b can be set appropriately. According to the above structure, in the state before discharge (state shown in Fig. 2) in which the valve body 5a is in the closed position and the movable portion 8 is in the expanded position, the intrusion of outside air into the storage space S can be suppressed by the close contact portion 7a of the movable portion 8 and the outer cylinder 7. In addition, during discharge when the valve body 5a moves from the closed position to the open position and the movable portion 8 moves from the expanded position to the non-expanded position, the contents can flow from the storage space S toward the through hole 9b through the groove portion 7b.

[0040] In the second embodiment, the end wall 8d has a recess 8d1 for storing the contents. According to the above configuration, since the contents are stored in the recess 8d1, it is possible to easily return the movable part 8 from the non-extended position to the extended position after the contents are discharged.

[0041] In the second embodiment, the cap body 11 has an alignment protrusion 11c that aligns the rotational angle position of the valve member 5 in the circumferential direction with respect to the cap body 11 by abutting in the circumferential direction against the intervening portion 12b of the inside plug 12, whose rotational angle position in the circumferential direction is aligned with the valve member 5, or by abutting in the circumferential direction against the valve member 5 (see Figs. 2 and 4). According to the above configuration, when the valve member 5, the inside plug 12, and the movable portion 8 are assembled together and then assembled into the cap body 11, the ventilation valve body 5d can be easily aligned and assembled with the ventilation hole 14a. The number of protrusions 11c1 constituting the alignment protrusion 11c can be appropriately set. The intervening portion 12b is composed of a plurality of protrusions 12b1, but is not limited thereto.

[0042] In addition, as in the third embodiment of the present invention shown in Figs. 5-6, the discharge cap 1 may be configured such that the movable part 8 has an axis member 8e extending upward from the end wall 8d in the upright position, and the axis member 8e can be pushed downward in the upright position by the valve body 5a when the valve body 5a moves from the open position (position shown in Fig. 6) to the closed position (position shown in Fig. 5). According to the above configuration, the valve body 5a can be pushed upward by the axis member 8e during discharge, so that the valve body 5a can be smoothly moved from the closed position to the open position. After discharge, the movable part 8 can be moved downward via the axis member 8e by utilizing the restoring force of the valve body 5a from the open position to the closed position by the biasing part 5c.

[0043] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0044] For example, the vent valve body 5d may be formed separately from the valve support portion 5b. The inlet 14b is not limited to the opening portion 2a, and may be provided in, for example, the body portion or the bottom portion. [Explanation of symbols]

[0045] 1 Discharge cap 2 Container body 2a Mouth 2b Inner layer 2c outer layer body 3. Flow Path 3a Passage gate 3b Discharge port 3c Upstream flow path 3d Downstream flow path 3d1 augmented space 4 Flow path forming section 5 Valve member 5a Valve body 5a1 Outer periphery 5a2 Protrusion 5b Valve support part 5c Force part 5d Vent valve body 5e Elastic connection part 6 Inner cylinder 7 Outer cylinder 7a Close contact area 7b Groove 8 Moving parts 8a Inner wall 8b Peripheral wall 8c Connecting wall 8d end wall 8d1 Recess 8e Shaft member 9 Connection 9a Contact part 9b Through hole 9c Circular protrusion 10. Gap 11 Cap body 11a Upper ceiling wall 11a1 Upper fitting part 11a2 Discharge cylinder 11b Mounting tube 11c Alignment protrusion 11c1 Protrusion 12 Inner stopper 12a Lower ceiling wall 12a1 Lower fitting part 12b Interposition part 12b1 Protrusion 13 Discharge container 14 Air passage 14a Ventilation hole 14b Introduction 14c Upper airway 14d. Lower airway 15 Lid 15a Obstruction body 15b Pressing part 16 Hinge part O center axis S Storage space

Claims

1. A discharge cap attached to a mouth of a container body that forms a storage space for storing contents, a flow path forming portion that forms a flow path extending from a passage port communicating with the accommodation space to a discharge port; a valve body that divides the flow path into an upstream flow path and a downstream flow path by moving from an open position to a closed position, The flow path forming portion is an ejection cap having an inner tube that forms the upstream flow path radially inward, an outer tube, and a movable portion that moves in the axial direction of the inner tube from a non-extended position to an extended position relative to the inner tube and the outer tube, thereby forming an expanded space that expands the downstream flow path between the outer peripheral surface of the inner tube and the inner peripheral surface of the outer tube.

2. the flow passage forming portion has a connection portion connecting the inner cylinder and the outer cylinder, The discharge cap according to claim 1 , wherein the connection portion has a contact portion that contacts the valve body when the valve body is in the closed position, and a through hole that is located radially outward of the inner cylinder relative to the contact portion and communicates with the expansion space.

3. The discharge cap described in claim 2, wherein the inner surface of the outer tube has a contact portion that is in tight contact with the movable part around the entire circumference when the outer tube is in the expanded position, and a groove portion that extends from between the contact portion and the through hole to the through hole and allows the contents to flow from the storage space toward the through hole when the movable part is in the non-expanded position.

4. The ejection cap according to claim 1 , wherein the movable portion has an inner wall extending along the outer peripheral surface of the inner tube, an outer peripheral wall extending along the inner peripheral surface of the outer tube, and a connecting wall connecting the inner wall and the outer peripheral wall.

5. The discharge cap according to claim 4 , wherein the connecting wall connects an upper end of the inner circumferential wall in an upright position to the upper end of the outer circumferential wall.

6. the movable portion has an inner circumferential wall extending along the outer circumferential surface of the inner cylinder, The inner circumferential wall extends downward beyond a lower end of the inner tube in an upright position in the non-extended position, The discharge cap according to claim 1 , wherein the movable portion has the passage opening penetrating the inner circumferential wall and an end wall extending radially inward from the lower end of the inner circumferential wall.

7. The dispensing cap of claim 6 , wherein the end wall has a recess for receiving the contents.

8. The movable portion has a shaft member extending upward from the end wall in an upright position, The discharge cap according to claim 6 , wherein the shaft member can be pushed downward in the upright position by the valve body when the valve body moves from the open position to the closed position.

9. a cap body having the discharge port and attached to the mouth portion; an inner plug having the inner cylinder and attached to the inside of the cap body; a valve member including a cylindrical valve support portion attached between the cap body and the inner plug, the valve body located radially inward from the valve support portion, and a biasing portion comprising a plurality of elastic bodies connecting the valve body to the valve support portion and biasing the valve body from the open position toward the closed position; The discharge cap according to claim 1 , further comprising: the movable portion attached to and held by the inner plug so as to be movable in the axial direction of the inner cylinder from the non-extended position to the extended position.

10. A container comprising the discharge cap according to claim 1 and the container body, The container body has a mouth, a body, and a bottom in this order, is formed by an inner layer and an outer layer that define the storage space therein, and has an inlet, The inlet introduces outside air between the inner layer and the outer layer by deformation of the inner layer, which causes the storage space to contract as the content is discharged.

11. The mouth portion has the inlet, The discharge cap has a vent hole and a vent valve body, The discharge container has an air passage extending from the air vent to the inlet, The discharge container according to claim 10, wherein the ventilation valve body divides the ventilation passage into an upstream air passage and a downstream air passage by moving from an open position to a closed position.

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