JP2020032329A - Dripping device and dripping container - Google Patents

Abstract

To provide a dripping device having a structure in which design for drip amounts and drip stoppage is facilitated, and a dripping container comprising the same.SOLUTION: The dripping device comprises a nozzle member 10 having a flow path 15 toward a tip side thereof and a core member 20 stored in the nozzle member 10, at a base end 15b side of a flow path 15 at the opposite side of the tip side. The nozzle member 10 has a nozzle main body part 11 having a storage part 16 for the core member 20 therein and a protruding part 12 protruding from the a nozzle main body part 11 toward the tip side and having a flow path 15 connected to the storage part 16. The core member 20 has an outer surface 21 at a side contacting the flow path 15 and has a concave hollow part 22a, on an inner surface at the opposite side of the flow path 15. On the outer surface 21 of the core member 20 or the inner surface of the storage part 16 is formed a groove part 23 along a direction of the flow path 15.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a dropping device and a dropping container.

  2. Description of the Related Art Containers provided with a dropping device at a mouth for dropping a drug solution such as eye drops and athlete's foot medicine, oil, cream, cosmetics, and the like are known. For example, Patent Literature 1 describes a container having a mouth portion for accommodating a sphere in a sphere storage portion of an inner plug body, and a vertical groove or a grain formed on an inner peripheral surface of the sphere storage portion or a surface of the sphere. Have been. In this container, it is said that by providing a sphere, an air bag is prevented, and by forming a vertical groove, it is possible to determine the amount of content to be dropped little by little (see Patent Document 1). See paragraphs 0014-0015).

JP-A-2004-123220

  In the container described in Patent Literature 1, since the member housed in the inner plug is a sphere whose shape does not change even when arbitrarily rotated, a gap between the lower stopper provided in the sphere housing portion and the sphere is provided. The flow path of the contents is determined. That is, when the sphere moves in the sphere storage section, the function of the check valve is exerted when the sphere comes into close contact with the lower stopper, and when the sphere does not come into close contact with the sphere, the contents are dropped and a slight air bag (depending on the extraction amount). Phenomena). For this reason, there was a problem that it was difficult to design the inner plug according to the moving dimension of the sphere.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a dripping device having a structure in which a dripping amount and a drip stop can be easily designed, and a dripping container provided with the dripping device.

  In order to solve the above problem, the present invention provides a nozzle member having a flow path toward a distal end side, and a nozzle member housed in the nozzle member at a base end side of the flow path opposite to the distal end side. A nozzle member, wherein the nozzle member has a nozzle main body portion having a housing portion for the core member therein, and a protrusion protruding distally from the nozzle main body portion and having the flow passage connected to the housing portion. And the core member, the core member has an outer surface on the side in contact with the flow path, has a concave cavity on the inner surface on the side opposite to the flow path, the outer surface of the core member or the There is provided a drip device, wherein a groove is formed on the inner surface of the housing along the direction of the flow path.

The material constituting the nozzle member and the material constituting the core member have different elastic moduli, and a change in pressure causes a change in the cross-sectional area between the outer surface of the core member and the inner surface of the housing. Is also good.
The outer surface of the core member may be in close contact with the inner surface of the housing portion in a region other than the groove.
The nozzle body portion includes a locking portion that contacts the base end side of the core member so as to prevent displacement of the core member toward the front end side or the base end side opposite thereto in the housing portion. May have.

  The present invention also provides a dropping container provided with the dropping device at a spout of the container.

  According to the present invention, since the core member does not need to move back and forth with respect to the nozzle member, the design of the drop amount and the stop of the drop becomes easy.

It is a front view which shows the external appearance of the front-end | tip part of the dripping container provided with the dripping device. It is sectional drawing of the front-end | tip part of the dripping container provided with the dripping device of 1st, 2nd embodiment. It is sectional drawing which shows the disassembled state of the dripping device of 1st Embodiment. It is sectional drawing which shows the disassembled state of the dripping device of 2nd Embodiment. It is a front view showing the 1st modification of a nozzle member. It is a front view showing the 2nd modification of a nozzle member. It is a front view showing the 3rd modification of a nozzle member.

  Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.

  FIG. 1 and FIG. 2 illustrate a tip portion of a dropping container provided with a dropping device. The dropping device according to the present embodiment includes a nozzle member 10 and a core member 20, and is provided at a spout 1 of a container. The spout 1 includes a spout main body 2 having an opening 4 on a distal end surface 5 and a screw 3 provided on an outer surface of the spout main body 2. The nozzle member 10 is fixed to the opening 4 such that its outer surface is in contact with the spout 1. For example, a fitting portion 11a such as unevenness that can be fitted to the periphery of the opening 4 may be provided on the outer surface of the nozzle main body 11 described later. The core member 20 is housed in the nozzle member 10 without contacting the spout 1. The screw 3 can be used for attaching and detaching a cap and the like (not shown).

  The nozzle member 10 has a nozzle body 11 having a housing portion 16 for housing the core member 20, and a protruding portion 12 protruding from the nozzle body 11 to the distal end side. The distal end portion 12a of the protruding portion 12 is provided with a protruding portion 13 that protrudes in a radial direction intersecting the protruding direction, and a constriction portion 14 whose diameter is reduced below the protruding portion 13. Inside the protruding portion 12, a flow path 15 is provided toward the distal end side. An opening 15 a is formed at a position where the flow channel 15 reaches the tip 12 a of the protruding portion 12. The opening 15a is the tip of the flow path 15. The diameter of the flow path 15 is smaller than the diameter of the throttle section 14, and the diameter of the bulging section 13 is larger than the diameter of the throttle section 14. Although not particularly limited, the diameters of the bulging portion 13 and the flow path 15 can be appropriately selected in a range of about 0.1 mm to 10 mm.

  On the base end 15b side opposite to the distal end side, the flow path 15 is connected to the housing portion 16. The base end 15 b of the flow path 15 is a connection part between the flow path 15 and the housing 16. The accommodating portion 16 is a concave space formed inside the nozzle body 11, and is provided near the lower end of the accommodating portion 16 for holding the core member 20 and in contact with the lower end portion of the core member 20. A stop 17 is formed. By this locking, the displacement of the core member 20 toward the distal end side or the base end side opposite thereto may be prevented in the housing portion 16.

  The core member 20 has an outer surface 21 on the side in contact with the flow channel 15 and a concave cavity 22a on an inner surface 22 opposite to the flow channel 15. The core member 20 has a structure having no hole penetrating between the outer surface 21 and the inner surface 22 in the thickness direction. The contents staying in the hollow portion 22 a are used for pressurizing the inner surface 22 without being poured out toward the flow path 15. The thickness between the outer surface 21 and the inner surface 22 of the core member 20 may be substantially uniform.

  As shown in FIG. 3, the dropping device of the first embodiment has a groove 23 on the outer surface 21 of the core member 20 along the direction of the flow path 15. One or more grooves 23 are provided around the central axis C. In the case of FIG. 3, three grooves 23 are arranged on the outer surface 21 of the core member 20 at equal intervals in the circumferential direction. At the distal end side of the core member 20 connected to the base end 15b side of the flow path 15, a plurality of grooves 23 join. The base end 23 a of the groove 23 is located slightly above the lower end of the core member 20, and the tip 23 b of the groove 23 is located on the center axis C of the core member 20.

  The outer surface 21 of the core member 20 may be in close contact with the inner surface of the housing 16 in a region other than the groove 23. When the core member 20 is accommodated in the accommodating portion 16 and the nozzle member 10 is arranged in the opening 4 of the spout 1 as shown in FIG. 2, a dripping container having a dripping device at the spout 1 of the container is obtained. Can be

  According to the dropping device of the first embodiment, when the inside of the container is pressurized by extrusion, squeezing, or the like, pressure is applied toward the tip side of the nozzle member 10. Since the cross-sectional area is regulated in the groove 23, the flow rate of the contents passing through the flow path 15 is restricted, and excessive pouring is suppressed. In addition, since the swelling portion 13 at the tip has a shape swelling out of the squeezing portion 14, the size of the droplet that is dropped away from the nozzle member 10 according to the size of the droplet attached to the swelling portion 13 Controlled. Even if pressurization is continued, droplets are dropped intermittently. When an internal pressure is applied to the hollow portion 22a of the core member 20, the core member 20 is elastically deformed or the like, so that the groove 23 or the like is disconnected between the outer surface 21 of the core member 20 and the inner surface of the housing portion 16. The area changes and the flow rate is regulated. When the pressurization is released, since the cross-sectional area of the groove 23 is small, the content cannot pass through the groove 23 due to the influence of surface tension or the like, and is not discharged from the flow path 15.

  The dripping device according to the second embodiment is generally configured in the same manner as the first embodiment, except that a groove 19 is provided on the inner surface of the housing 16 along the direction of the flow path 15 as shown in FIG. ing. In the case of the second embodiment, thick portions 18 are provided on both sides in the width direction of the groove portion 19 on the inner surface of the housing portion 16. For this reason, the groove 19 is formed in a portion where the thick portion 18 is not formed, and the upper and lower ends of the thick portion 18 are the base end 19a and the tip 19b of the groove 19, respectively. One or more, for example, three grooves 19 are provided around the central axis C. The outer surface 21 of the core member 20 may be in close contact with the inner surface of the housing 16 in a region other than the groove 19.

  According to the dropping device of the second embodiment, similarly to the dropping device of the first embodiment, the cross-sectional area of the groove 19 is regulated between the nozzle member 10 and the core member 20, and the like. When the interior is pressurized, an appropriately sized droplet is dispensed.

  In the dropping device of the first or second embodiment, it is preferable that the material constituting the nozzle member 10 and the material constituting the core member 20 have different elastic moduli. Thereby, the cross-sectional area between the outer surface 21 of the core member 20 and the inner surface of the housing portion 16 is easily changed according to the change in the pressure applied to the dropping device. The flow rate can be reduced in the direction in which the cross-sectional area becomes narrow, and can be increased in the direction in which the cross-sectional area becomes wide. Although not particularly limited, the width and depth of the grooves 19 and 23 can be appropriately selected from a range of about 0.01 mm to 1 mm.

  In the direction along the central axis C, the range in which the grooves 19 and 23 are provided between the outer surface 21 of the core member 20 and the inner surface of the housing portion 16 is not particularly limited, but is on the distal end side of the core member 20. It may be a part including any of an upper part, a lower part which is the base end side of the core member 20, and an intermediate part between the upper part and the lower part of the core member 20. The distance from the base ends 19a, 23a of the grooves 19, 23 to the tips 19b, 23b of the grooves 19, 23 in the direction along the central axis C is relative to the height of the core member 20 in the direction along the central axis C. The length may be about 1/3. Two or more types of grooves 19 and 23 having different ranges in the direction along the central axis C may be used in combination.

  For example, the grooves 19 and 23 having a height of about 〜 to の of the height of the core member 20 may be provided in any of the upper part, the middle part, and the lower part of the core member 20. Alternatively, the grooves 19 and 23 having a height of about ２ to の of the height of the core member 20 may be provided from an intermediate portion of the core member 20 to an upper portion. Alternatively, the grooves 19 and 23 having a height of about ２〜 to の of the height of the core member 20 may be provided from a lower portion of the core member 20 to an intermediate portion. Alternatively, the grooves 19 and 23 of about 2/3 or more of the height of the core member 20 may be provided from the lower part to the upper part of the core member 20.

  5 to 7 show modified examples of the nozzle member 10. These modifications can be combined with the configuration in which the cross-sectional area is regulated in the grooves 19 and 23 between the nozzle member 10 and the core member 20, as in the case of the dropping device according to the first or second embodiment. Thereby, when the inside of the container is pressurized, droplets of an appropriate size are discharged. Further, as shown in FIGS. 5 to 7, the nozzle main body 11 may have a flange 11 b so as to contact the tip end surface 5 of the spout main body 2 with a wider area.

  In the first modified example shown in FIG. 5, a flange portion 14a is provided on the base end side of the throttle portion 14. Thereby, the dripping property of the droplet can be improved. In the second modified example shown in FIG. 6, the bulging portion 13 shown in FIGS. The third modified example shown in FIG. 7 has substantially the same configuration as the second modified example, except that the distal end portion 12a is inclined with respect to the central axis C. By omitting the bulging portion 13, the configuration of the nozzle member 10 can be simplified, and the cost can be reduced.

  Examples of the container provided with the above-described dripping device include a bottle container, a tube container, and a soft packaging bag. A container that can be deformed by pressing is preferable. When the pressing is released, it may be elastically restored in the expanding direction, and the deformation when pressed may be maintained. In the case of using a flexible container, even after the content is dropped from the container and the pressing is released, the volume remains reduced in accordance with the decrease in the content, and the invasion of the outside air is suppressed.

  Examples of the type of contents include liquid medicines such as eye drops and athlete's foot medicine, oils, creams, cosmetics, fragrances, seasonings, detergents, adhesives, lubricating oils, and the like. The viscosity of the content is not particularly limited, and examples of the property of the content include an aqueous solution and an oily substance. Examples of the material forming the nozzle member and the core member include resin, rubber, and elastomer.

  As described above, the present invention has been described based on the preferred embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention. Modifications include addition, substitution, omission, and other changes of components in each embodiment. Further, the components used in the two or more embodiments can be appropriately combined.

  In the above-described embodiment, the groove along the direction of the flow path is provided on only one of the outer surface of the core member and the inner surface of the housing portion. However, the present invention is not limited to this, and a groove may be provided on each of the outer surface of the core member and the inner surface of the housing portion along the direction of the flow path.

  For example, the groove provided on the outer surface of the core member and the groove provided on the inner surface of the housing may be provided at different positions. Alternatively, the groove provided on the outer surface of the core member and the groove provided on the inner surface of the housing may intersect at a specific point in the length direction. Alternatively, the groove provided on the outer surface of the core member and the groove provided on the inner surface of the accommodating portion may overlap each other over a continuous section in the length direction.

C: center axis line, 1 ... spout, 2 ... spout body, 3 ... screw, 4 ... opening, 5 ... tip surface, 10 ... nozzle member, 11 ... nozzle body, 11a ... fitting part, 11b ... nozzle Flange portion of main body portion, 12 projecting portion, 12a tip portion, 13 bulging portion, 14 throttle portion, 14a flange portion of projecting portion, 15 flow path, 15a opening (tip of flow path), 15b: base end of flow path (connection part between flow path and storage section), 16: storage section, 17: locking section, 18: thick section, 19, 23: groove section, 19a, 23a: base end of groove section , 19b, 23b: tip of groove, 20: core member, 21: outer surface of core member, 22: inner surface of core member, 22a: hollow portion.

Claims (5)

A nozzle member having a flow path toward the distal end side, including a core member housed in the nozzle member at a base end side of the flow path opposite to the distal end side,
The nozzle member has a nozzle main body portion having a housing portion for the core member therein, and a protruding portion having the flow path connected to the housing portion, protruding from the nozzle main body portion to the distal end side,
The core member has an outer surface on a side in contact with the flow path, and has a concave cavity on an inner surface on a side opposite to the flow path,
A drip device, wherein a groove is provided on an outer surface of the core member or an inner surface of the housing portion along a direction of the flow path.   The material constituting the nozzle member and the material constituting the core member have different elastic moduli, and a change in pressure causes a change in a cross-sectional area between an outer surface of the core member and an inner surface of the housing portion. The dropping device according to claim 1, wherein:   The dropping device according to claim 1, wherein an outer surface of the core member is in close contact with an inner surface of the housing portion in a region other than the groove.   The nozzle body portion includes a locking portion that contacts the base end side of the core member so as to prevent displacement of the core member toward the front end side or the base end side opposite thereto in the housing portion. The dripping device according to any one of claims 1 to 3, further comprising:   A dropping container provided with the dropping device according to claim 1 at an outlet of the container.

Images