JP2023035014A - Splay cap - Google Patents

Abstract

To provide a mist-like liquid to stably eject (spray) even if a content liquid has a high viscosity.SOLUTION: A spray cap 1 includes a mounting cap 10 mounted on a mouth part 3 of a container body 2 having a storage space R1 for storing a content liquid and a nozzle member 30 having a nozzle hole 31 formed therein and combined with the mounting cap, the mounting cap includes a closing wall part 12 in which an air hole 15 and a flow hole 16 are formed and a head cylindrical part 20 in which an air passage 22 and a flow passage 21 are formed, the nozzle member is provided with a gas-liquid mixing part 32 that communicates with an inside of the nozzle hole and mixes the content liquid introduced through the flow passage with the air introduced through the air passage, an air introduction member 50 is provided on the inside of the mouth part of the container body to introduce the air that has stored inside into the air passage as an internal pressure of the storage space rises.SELECTED DRAWING: Figure 1

Description

The present invention relates to spray caps.

2. Description of the Related Art Conventionally, there has been known a spray cap capable of ejecting (spraying) a content liquid in the form of a mist. For example, Patent Literature 1 below discloses a cap base which is attached to the mouth of a squeezable container and has a pouring hole, which is connected to the cap base via a hinge part so as to be able to open and close the pouring hole, and which sprays. A spray cap is known that includes a lower cover having a hole and an upper cover that is attached to the lower cover and opens and closes the spray hole.
The cap base body is provided with a boss portion that protrudes toward the spray hole of the lower lid. The lower cover is provided with a concave portion that is fitted to the boss portion and that forms a spin chamber in a fitting space centered on the spray hole.

In the spray cap configured in this way, by squeezing the container, the content liquid can flow into the spin chamber and be swirled in the spin chamber. As a result, the spun content liquid can be ejected through the spray holes. As a result, it is possible to spray the content liquid outward in the form of a mist.

JP 2016-69023 A

However, in the spray cap described in Patent Document 1, the content liquid is swirled in the spin chamber to be spun, and the swirling force of the content liquid itself is used to spray the liquid in the form of mist. Therefore, for example, in the case of a highly viscous content liquid, it is difficult to sufficiently spin the content liquid, and there is a possibility that the content liquid cannot be ejected in the form of a mist.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a spray cap that can stably eject (spray) even a highly viscous content liquid. to provide.

(1) A spray cap according to the present invention includes a mounting cap attached to the mouth of a container body having a housing space for containing a content liquid, and a nozzle hole for ejecting the content liquid, which is combined with the mounting cap. The mounting cap includes a closing wall portion that closes the mouth portion of the container body and is formed with an air hole and a flow hole, and a nozzle member that protrudes upward from the closing wall portion. and a head tubular portion in which an air passage communicating with the air hole and a flow passage communicating with the inside of the container body through the flow hole are formed, wherein the nozzle member comprises the head tubular portion. The nozzle member communicates with the nozzle hole and is introduced from the container body through the flow passage, and the content liquid is introduced through the air passage. A gas-liquid mixing portion for mixing with air is provided inside the mouth portion of the container body, and communicates with the air hole and is not communicated with the inside of the container body. Also, an air introduction member is provided for introducing air stored inside into the air passage through the air hole.

According to the spray cap of the present invention, the inner pressure of the housing space can be increased by, for example, squeezing deformation of the container body. As a result, the content liquid stored in the storage space can be introduced into the flow path through the flow hole and guided to the gas-liquid mixing section. At the same time, air can be introduced into the air passage through the air hole by the air introduction member as the internal pressure of the accommodation space rises. Thereby, the air can be guided to the gas-liquid mixing section. Therefore, in the gas-liquid mixing section, the content liquid introduced through the flow passage and the air introduced through the air passage can be combined and mixed, and the content liquid mixed with the air is ejected to the outside through the nozzle hole. can be made At this time, the content liquid mixed with the air can be ejected using the force of the air introduced into the gas-liquid mixing section, so that it can be ejected (sprayed) in the form of mist.
In particular, unlike the conventional technology, the content liquid can be mixed with air and the content liquid can be vigorously ejected using the force of the air. can be stably ejected. Therefore, a wide variety of content liquids can be widely applied, and a spray cap that is easy to use and excellent in convenience can be obtained.

(2) The air introduction member has a storage space capable of storing air therein, and includes an elastically deformable portion that is elastically deformable so as to expand and contract, and the elastically deformable portion increases the internal pressure of the storage space. The air in the storage space may be introduced into the air passage through the air hole by elastically deforming so as to contract with the pressure.

In this case, when the internal pressure of the housing space is increased due to squeeze deformation of the container body or the like, pressure can be applied to the elastically deformable portion due to the increase in internal pressure. Thereby, it can be elastically deformed so as to contract the elastically deformable portion. Therefore, the pressure in the storage space can be raised, and the air can be vigorously introduced into the air passage. Therefore, even a highly viscous content liquid can be stably ejected in the form of a mist.
After the content liquid is ejected, the elastic deformation portion can be elastically restored and deformed by canceling the squeezing deformation of the container body. As a result, the inside of the storage space can be made to have a negative pressure, and air can be drawn into the storage space from the outside along with the elastic restoring deformation of the elastically deformable portion. Therefore, it is possible to quickly prepare for the next ejection of the content liquid.

(3) The air introducing member includes a cylinder having a storage space capable of storing air therein, a middle plate arranged inside the cylinder so as to be vertically movable, and the middle plate facing downward. and an urging member for exerting force, wherein the middle plate moves upward as the internal pressure of the accommodation space rises, thereby introducing the air in the storage space into the air passage through the air hole. Also good.

In this case, when the internal pressure of the accommodation space increases due to squeeze deformation of the container body or the like, the increase in internal pressure can apply pressure to the intermediate plate. As a result, the intermediate plate can be moved upward within the cylinder against the biasing force of the biasing member. Therefore, the air in the storage space can be vigorously introduced into the air passage. Therefore, even a highly viscous content liquid can be stably ejected in the form of a mist.
It should be noted that after the content liquid is ejected, the inner plate can be lowered by the biasing force of the biasing member, such as by canceling the squeeze deformation of the container body. As a result, the inside of the storage space can be made to have a negative pressure as the middle plate descends, and air can be drawn into the storage space from the outside. Therefore, it is possible to quickly prepare for the next ejection of the content liquid.

(4) The gas-liquid mixing section has a spin chamber for swirling the content liquid introduced through the flow passage, and mixes the swirling content liquid in the spin chamber with air introduced through the air passage. can be

In this case, since the liquid content can be swirled in the spin chamber, air can be mixed with the liquid content that has been spun. As a result, even when the content liquid has a high viscosity, it can be more stably ejected in the form of a mist.

(5) The nozzle member is attached to the tubular head portion so as to be rotatable about the axis of the tubular head portion, and the gas-liquid mixing portion is rotated by the nozzle member relative to the tubular head portion. It may be possible to switch between an ejection possible state in which communication with the flow path is permitted and an ejection restricted state in which communication with the flow path is blocked.

In this case, by a simple operation of rotating the nozzle member with respect to the head cylinder, the ejection possible state and the ejection restricted state can be switched. can do.

ADVANTAGE OF THE INVENTION According to this invention, even if it is a content liquid with high viscosity, it can be set as the spray cap which can perform mist-like ejection (spraying) stably.

1 is a longitudinal sectional view showing a first embodiment of a spray cap according to the invention; FIG. 1. It is a longitudinal cross-sectional view which shows the state which introduce|transduces a content liquid and air into a gas-liquid mixing part from the state shown in FIG. FIG. 5 is a longitudinal sectional view showing a second embodiment of the spray cap according to the invention; FIG. 4 is a vertical cross-sectional view showing a state in which the content liquid and air are being introduced into the gas-liquid mixing section from the state shown in FIG. 3 ;

(First embodiment)
1st Embodiment of the spray cap which concerns on this invention is described with reference to drawings.
As shown in FIG. 1, the spray cap 1 of the present embodiment is a topped cylindrical mounting cap attached to the mouth portion 3 of a bottomed cylindrical container body 2 having a housing space R1 for containing a content liquid. 10, a topped cylindrical nozzle member 30 formed with a nozzle hole 31 for ejecting the content liquid and combined with the mounting cap 10, and connected to the mounting cap 10 via a hinge portion 41, the mounting cap 10 and the nozzle. and a lid cap 40 covering the member 30 .
The mounting cap 10 and the lid cap 40 are formed integrally by, for example, injection molding.

The content liquid contained in the container main body 2 is not particularly limited, but examples thereof include liquid foods and liquid cosmetics. In particular, in the present embodiment, a highly viscous content liquid such as edible oil can be suitably used.

In FIG. 1, the container body 2, the mounting cap 10, and the lid cap 40 are arranged such that their central axes are on a common axis. Hereinafter, this common axis will be referred to as a cap axis O1, the side of the lid cap 40 along the cap axis O1 will be referred to as the upper side, and the opposite side of the container body 2 will be referred to as the lower side. Furthermore, in a plan view seen from the direction of the cap axis O1, the direction intersecting the cap axis O1 is called the radial direction, and the direction rotating around the cap axis O1 is called the circumferential direction.
Further, one of the radial directions that intersects each other at right angles is referred to as the front-rear direction L1, the hinge portion 41 side of the front-rear direction L1 is the rear, and the opposite side is the front.

(container body)
The container body 2 is formed in a bottomed tubular shape in which a mouth portion 3, a shoulder portion 4, a body portion (not shown), and a bottom portion (not shown) are successively arranged from above. Note that the container main body 2 is capable of being squeeze deformed. Therefore, at least the trunk portion of the container body 2 is elastically deformable toward the radially inner side (inside the container).

The mouth portion 3 of the container body 2 is formed to extend upward from the upper end opening of the shoulder portion 4 . In the illustrated example, the mouth portion 3 of the container body 2 includes a first mouth portion 3a connected to the shoulder portion 4 and a second mouth portion 3b arranged above the first mouth portion 3a. ing.
A first threaded portion 5 (for example, a male threaded portion) for mounting the mounting cap 10 is formed on the outer peripheral surface of the first mouth portion 3a. However, it is not limited to the case where the first threaded portion 5 is formed on the outer peripheral surface of the first opening 3a. A first engaging projection projecting outward may be formed.

The second opening 3b is formed to extend radially inward and then upward from the upper end of the first opening 3a. Thereby, the diameter of the second opening 3b is smaller than that of the first opening 3a. However, the shape of the second opening 3b is not limited to this case.

(wearing cap)
The mounting cap 10 surrounds the mouth portion 3 of the container body 2 from the outside in the radial direction, and is connected to the mounting cylinder 11 mounted to the mouth portion 3 of the container body 2 and the upper end portion of the mounting cylinder 11, and is connected to the container body. 2, and a closing wall portion 12 for closing the mouth portion 3 from above.

A second threaded portion 13 (for example, a female threaded portion) is formed on the inner peripheral surface of the mounting cylinder 11 so as to be screwed into the first threaded portion 5 formed on the first mouth portion 3a of the container body 2 . Thus, the mounting cap 10 is mounted on the mouth portion 3 of the container body 2 by screwing onto the first mouth portion 3a.
However, the method of attaching the attachment cap 10 to the mouth portion 3 of the container body 2 is not limited to screwing (threaded coupling between the first threaded portion 5 and the second threaded portion 13). For example, as described above, when the first engaging protrusion is formed on the outer peripheral surface of the first opening 3a, it protrudes radially inward from the inner peripheral surface of the mounting cylinder 11, and the first engaging protrusion is formed. The mounting cap 10 may be mounted by fitting by forming a second engaging projection that is undercut-fitted to the projection.

A protruding portion 14 is formed on the inner peripheral surface of the upper end portion of the mounting cylinder 11 so as to protrude inward in the radial direction. The projecting portion 14 is formed, for example, in an annular shape extending over the entire circumference of the mounting cylinder 11 . However, the protrusions 14 do not need to be formed in an annular shape, and may be formed in plural at intervals in the circumferential direction. In addition, the protrusion 14 is formed at a height position equivalent to the upper end opening edge of the second opening 3 b in the container body 2 .

The closing wall portion 12 has an outer peripheral edge portion connected to the upper end opening edge of the mounting cylinder 11 over the entire circumference. The blocking wall portion 12 is formed with an air hole 15 and a communication hole 16 penetrating vertically through the blocking wall portion 12 .
The air hole 15 is formed in the closed wall portion 12 at a position shifted rearward with respect to the cap axis O1, and has, for example, a circular shape in a plan view. The flow hole 16 is formed in a portion of the blocking wall portion 12 further rearward than the air hole 15 and located inside the mouth portion 3 of the container body 2, and has, for example, a circular shape in a plan view. formed. In the illustrated example, the communication hole 16 is formed to have an opening size smaller than that of the air hole 15 .

An engaging projection 17 projecting radially outward is formed on the outer peripheral edge portion of the closing wall portion 12 . The engagement projection 17 plays a role of fitting the lid cap 40 when the lid cap 40 is shifted to the closed state. In addition, the engaging protrusion 17 may be formed in a ring shape, or may be formed in plural at intervals in the circumferential direction.

Further, the closing wall portion 12 is integrally formed with a head tubular portion 20 protruding upward.
A flow passage 21 through which the content liquid flows and an air passage 22 through which air flows are formed inside the head tube portion 20 so as to be separated from each other. Specifically, the head tubular portion 20 is formed in a double tubular shape in which the air passage 22 is surrounded by the flow passage 21 .

I will explain in detail.
The head tubular portion 20 is formed to protrude upward from a portion of the closing wall portion 12 located rearward of the cap axis O1, and then extend forward as it goes further upward. As a result, the head tube portion 20 as a whole is formed to extend obliquely upward toward the front.
The central axis of the head tube portion 20 extending obliquely upward is referred to as a head axis O2. Further, when viewed from the direction of the head axis O2, the direction intersecting the head axis O2 is called the head radial direction, and the direction rotating around the head axis O2 is called the head circumferential direction.

The head tube portion 20 is formed in a double tube shape including a first head tube portion 23 positioned inside and a second head tube portion 24 outside surrounding the first head tube portion 23 . . Both the first tubular head portion 23 and the second tubular head portion 24 are opened obliquely upward.
An air passage 22 communicating with the air hole 15 is formed inside the first head tube portion 23 . Furthermore, the inside of the second head tube portion 24 (specifically, the space between the first head tube portion 23 and the second head tube portion 24 ) serves as a flow path 21 that communicates with the flow hole 16 . The flow path 21 communicates with the inside of the container body 2 through the flow hole 16 .
In this way, the inside of the first tubular head portion 23 serves as the air passage 22, and the inside of the second tubular head portion 24 serves as the flow passage 21, so that the air passage 22 and the flow passage 21 are separated from each other. there is

Further, a first switching groove 25 extending linearly along the head axis O2 and opening obliquely upward is formed in the outer peripheral surface of the first head tube portion 23 on the tip side. In the illustrated example, two first switching grooves 25 are formed at equal intervals in the circumferential direction of the head.
However, the number of first switching grooves 25 is not limited to two, and may be one or three or more, for example.

(lid cap)
The lid cap 40 is formed in a truncated tubular shape having a cap peripheral wall 42 and a cap top wall 43, and covers the closing wall portion 12 and the later-described nozzle member 30 in the main body of the mounting cap 10 from above. It can be opened and closed by turning around.
Therefore, the lid cap 40 rotates around the hinge portion 41, thereby displacing between a closed state in which the lid is attached to the mounting cap 10 and an open state in which the lid is separated from the mounting cap 10 (see FIG. 2). do.

The cap peripheral wall 42 is placed on the upper open end of the mounting cylinder 11 when the lid cap 40 is in the closed state, and the lower end side of the cap peripheral wall 42 is undercut-fitted to the engaging projection 17 . As a result, the lid cap 40 is held in a closed state, and is prevented from being opened at an unintended timing.

The hinge portion 41 integrally connects the lower end portion of the cap peripheral wall 42 and the upper end portion of the mounting cylinder 11 . At this time, the hinge portion 41 is formed so that the circumferential position is the same as that of the communication hole 16 . As a result, the lid cap 40 can be opened and closed radially opposite to the nozzle member 30 with respect to the cap axis O1 (toward the rear) (see FIG. 2).

A knob 44 protruding radially outward is formed in a portion (front portion) of the cap peripheral wall 42 located on the opposite side of the hinge portion 41 across the cap axis O1. Therefore, by using the tab 44, the lid cap 40 can be easily opened and closed around the hinge portion 41. As shown in FIG.

(Nozzle member)
The nozzle member 30 is combined with the mounting cap 10 by being mounted on the head tube portion 20 .
The nozzle member 30 is provided with a gas-liquid mixing section 32 which communicates with the nozzle hole 31 and mixes the content liquid introduced from the container body 2 through the flow passage 21 and the air introduced through the air passage 22. It is

The nozzle member 30 will be explained in detail.
The nozzle member 30 is integrally combined with the distal end portion of the head tubular portion 20 from obliquely above, and closes the openings of the first tubular head portion 23 and the second tubular head portion 24 . In this embodiment, the nozzle member 30 is attached to the head tube portion 20 so as to be rotatable around the head axis O2.

The nozzle member 30 is arranged to face the tip opening edge of the first head cylinder portion 23 and the second head cylinder portion 24 , and has a nozzle wall portion 33 in which a nozzle hole 31 is formed. , extending toward the head cylinder portion 20 side and attached to the first head cylinder portion 23; and a second nozzle tube portion 35 that extends toward the second head tube portion 24 and is attached to the second head tube portion 24 .

The nozzle wall portion 33 is formed with a nozzle portion 33a extending along the head axis O2 toward the side opposite to the head cylinder portion 20 side. That is, the nozzle portion 33a extends obliquely upward from the nozzle wall portion 33 in the ejection direction of the content liquid. In the illustrated example, the nozzle portion 33 a is formed in a cylindrical shape with an inner diameter larger than the outer diameter of the first nozzle cylinder portion 34 and an outer diameter smaller than the inner diameter of the second nozzle cylinder portion 35 . Note that the nozzle portion 33a is not essential and may be omitted.

The first nozzle tube portion 34 is fitted to the outside of the first head tube portion 23 so as to be rotatable around the head axis O2. At this time, the inner peripheral surface of the first nozzle cylinder portion 34 is in close contact with the outer peripheral surface of the first head cylinder portion 23 . The first nozzle cylinder portion 34 is formed to extend beyond the first switching groove 25 formed on the outer peripheral surface of the first head cylinder portion 23 .
The second nozzle tube portion 35 is attached to the second head tube portion 24 by being rotatably fitted around the head axis O2 in a state where it is prevented from coming off obliquely upward.

Further, the nozzle member 30 is positioned between the first nozzle cylinder portion 34 and the second head cylinder portion 24, and extends from the nozzle wall portion 33 toward the head cylinder portion 20 side along the head axis O2 direction. A support cylinder portion 36 is further provided inside the two-head cylinder portion 24 so as to be rotatable around the head axis O2.
The support cylinder portion 36 is fitted inside the second head cylinder portion 24 to sandwich the second head cylinder portion 24 with the second nozzle cylinder portion 35 in the head radial direction. Thereby, the second nozzle tube portion 35 can be fitted to the second head tube portion 24 in a more stable state. Therefore, the support tube portion 36 supports fitting of the second nozzle tube portion 35 and contributes to more stable attachment performance of the nozzle member 30 to the head tube portion 20 . Note that the support tube portion 36 is not essential and may be omitted.

A second switching groove 37 extending linearly along the head axis O2 and opening rearward is formed in the inner peripheral surface of the first nozzle cylinder portion 34 . In the illustrated example, two second switching grooves 37 are formed at equal intervals in the head circumferential direction. formed to communicate with each other.
The number of the second switching grooves 37 is not limited to two, and may be, for example, one or three or more. .

The nozzle hole 31 is formed in the nozzle wall portion 33 so as to be coaxial with the head axis O2. The gas-liquid mixing portion 32 is formed in a portion of the rear surface of the nozzle wall portion 33 located inside the first nozzle cylinder portion 34 . As a result, the gas-liquid mixing section 32 communicates with the inside of the first tubular head section 23 , that is, with the air passage 22 . Therefore, it is possible to introduce air into the gas-liquid mixing section 32 through the air passage 22 .
Furthermore, the gas-liquid mixing portion 32 communicates with the flow path 21 through a spin groove 39, a first switching groove 25, and a second switching groove 37, which will be described later. Therefore, the content liquid introduced into the flow path 21 can be introduced into the gas-liquid mixing section 32 through the second switching groove 37 , the first switching groove 25 and the spin groove 39 .

Furthermore, the gas-liquid mixing section 32 of the present embodiment has a concave spin chamber 38 for swirling the content liquid introduced through the flow path 21 . The spin chamber 38 is formed so as to be recessed in the rear surface of the nozzle wall portion 33, and is formed, for example, in a circular shape when viewed from the direction of the head axis O2.

Further, a spin groove 39 for feeding the content liquid into the spin chamber 38 is formed on the rear surface of the nozzle wall portion 33 . The spin groove 39 is formed, for example, so as to extend in the tangential direction of the inner peripheral wall of the spin chamber 38 , and feeds the content liquid from the above-described first switching groove 25 into the spin chamber 38 . As a result, it is possible to cause the content liquid to spin in the circumferential direction within the spin chamber 38 .
Therefore, the gas-liquid mixing section 32 can mix the air introduced through the air passage 22 with the content liquid swirling in the spin chamber 38, mixing the content liquid with the air and spinning the content liquid. It is possible to guide it to the nozzle hole 31 .

In the illustrated example, two spin grooves 39 are formed at intervals in the head circumferential direction. At this time, the entrance of the spin groove 39 positioned on the inner peripheral surface side of the first nozzle cylinder portion 34 and the second switching groove 37 formed on the inner peripheral surface of the first nozzle cylinder portion 34 are aligned in the direction of the head axis O2. are formed so that the positions in the head circumferential direction are the same when viewed from the top.

Therefore, by rotating the nozzle member 30 about the head axis O2 with respect to the head cylinder portion 20, the circumferential position of the second switching groove 37 formed in the inner peripheral surface of the first nozzle cylinder portion 34 and the position of the first head By matching the circumferential position of the first switching groove 25 formed on the outer peripheral surface of the cylindrical portion 23 , the inside of the spin groove 39 and the inside of the flow path 21 are connected via the first switching groove 25 and the second switching groove 37 . can be communicated.
That is, the inside of the spin chamber 38 and the inside of the flow path 21 in the gas-liquid mixing section 32 can be communicated through the spin groove 39, the first switching groove 25, and the second switching groove 37, and the content liquid can flow into the spin chamber 38. can be introduced.

As described above, in this embodiment, by rotating the nozzle member 30 around the head axis O2, the inside of the spin chamber 38 and the inside of the flow path 21 through the spin groove 39, the first switching groove 25, and the second switching groove 37 are changed. can be switched between communication and disconnection. Therefore, the gas-liquid mixing section 32 (within the spin chamber 38) and the inside of the flow passage 21 can be communicated only when the nozzle member 30 is rotated around the head axis O2 and positioned at a predetermined rotational position. It can be in a non-communication state at other rotational positions.
The rotational position of the nozzle member 30 at which the gas-liquid mixing section 32 communicates with the inside of the flow path 21 is called the communicating position, and the rotational position at which the communication between the gas-liquid mixing section 32 and the inside of the flow path 21 is blocked is called the blocking position. It says. Therefore, the nozzle member 30 is rotatable about the head axis O2 between the communicating position and the blocking position.

When the nozzle member 30 is positioned at the communicating position, the nozzle hole 31 is in a jettable state in which the content liquid can be jetted, and when the nozzle member 30 is positioned at the blocking position, the jetting of the content liquid is restricted. becomes regulated.
Therefore, the gas-liquid mixing section 32 can be in an ejection possible state in which communication with the flow path 21 is permitted and an ejection restricted state in which communication with the flow path 21 is blocked by rotation of the nozzle member 30 with respect to the head tube portion 20. It is possible to switch between

The first switching groove 25 and the second switching groove 37 serve as the switching passage 45 for switching communication between the gas-liquid mixing section 32 and the flow passage 21 and disconnection of the connection as the nozzle member 30 rotates with respect to the head tube portion 20. Configure.

(Air introducing member)
The spray cap 1 of this embodiment includes an air introduction member 50 provided inside the mouth portion 3 of the container body 2 .
The air introduction member 50 communicates with the air hole 15 and does not communicate with the inside of the container body 2 , and is capable of introducing the air stored inside into the air passage 22 through the air hole 15 . It is

The air introduction member 50 is formed integrally with a sheet body 51 arranged on the upper end opening edge of the mouth portion 3 of the container body 2, and is elastically deformable so as to swell downward. a portion 52; The air introduction member 50 is made of an elastically deformable soft material such as elastomer or rubber.

The sheet body 51 is vertically sandwiched between the mouth portion 3 of the container body 2 and the closing wall portion 12 of the mounting cap 10 while being arranged on the upper end opening edge of the mouth portion 3 of the container body 2 . . Thereby, a constant sealing property is ensured between the mouth portion 3 of the container body 2 and the sheet body 51 .
The outer peripheral edge of the sheet body 51 is engaged with the protrusion 14 formed on the inner peripheral surface of the mounting cylinder 11 from above. Therefore, it is possible to combine the air introducing member 50 with the mounting cap 10 from the stage prior to mounting the mounting cap 10 on the mouth portion 3 of the container body 2 .

Air openings 53 and circulation openings 54 are formed in the sheet body 51 so as to correspond to the air holes 15 and the circulation holes 16 . In the illustrated example, the air opening 53 is formed with an opening size larger than that of the air hole 15 , and the communication opening 54 is formed with an opening size equivalent to that of the communication hole 16 .

The elastically deformable portion 52 is formed so as to extend from the peripheral portion of the air opening portion 53 of the sheet body 51 and swell greatly downward. The elastically deformable portion 52 has therein a storage space R2 capable of storing air, and is elastically deformable so as to expand and contract. Therefore, the storage space R2 is not communicated with the container main body 2 and is communicated only with the air passage 22 through the air hole 15. As shown in FIG.

The elastic deformation portion 52 configured as described above elastically deforms so as to contract (deflate) as the internal pressure of the accommodation space R1 inside the container body 2 rises, thereby changing the air in the storage space R2 into air. It is possible to introduce it into the air passage 22 through the hole 15 .

(Action of spray cap)
The operation of the spray cap 1 configured as described above will be described. It is assumed that the nozzle member 30 is positioned at the communication position.

In spouting the content liquid, as shown in FIG. 2, the lid cap 40 is opened around the hinge portion 41 by using the tab 44 or the like, thereby shifting from the closed state to the open lid state. Next, for example, while tilting the container body 2 forward, the container body 2 is squeeze-deformed. As a result, the internal pressure of the housing space R1 in the container main body 2 can be increased, and the liquid content in the housing space R1 can be introduced into the flow path 21 through the flow hole 16 as indicated by the arrow F1 shown in FIG. can be done. At this time, since the nozzle member 30 is positioned at the communication position, the content liquid introduced into the flow passage 21 is caused to spin through the gas-liquid mixing section 32 through the second switching groove 37, the first switching groove 25 and the spin groove 39. It can be introduced into chamber 38 .

Furthermore, simultaneously with the introduction of the content liquid into the flow passage 21, the air introduction portion introduces air into the air passage 22 through the air holes 15 due to the rise in the internal pressure of the accommodation space R1.
Specifically, pressure can be applied to the elastically deformable portion 52 by increasing the internal pressure of the housing space R1. As a result, the elastically deformable portion 52 can be elastically deformed so as to contract the elastically deformable portion 52, as indicated by arrow F2 in FIG. Therefore, the pressure in the storage space R2 can be increased, and the air can be vigorously introduced into the air passage 22 as indicated by the arrow F3 shown in FIG. Thereby, the air can be guided to the spin chamber 38 of the gas-liquid mixing section 32 through the air passage 22 .

Therefore, in the gas-liquid mixing section 32, the content liquid introduced through the flow passage 21 and the air introduced through the air passage 22 can be vigorously merged and mixed, and the content liquid mixed with the air can be It can be ejected to the outside through the nozzle hole 31 . At this time, the content liquid mixed with the air can be ejected using the force of the air introduced into the gas-liquid mixing section 32, so that it can be ejected (sprayed) in the form of mist.

In particular, unlike the conventional technology, the content liquid can be mixed with air and the content liquid can be vigorously ejected using the force of the air. can be stably ejected.

As described above, according to the present embodiment, the spray cap 1 can be widely applied to a wide variety of content liquids, is easy to use, and is excellent in convenience.
In particular, since the gas-liquid mixing section 32 has the spin chamber 38, the content liquid can be sufficiently swirled in the spin chamber 38, and the spun content liquid can be mixed with air. . Therefore, even if the content liquid has a high viscosity, it can be stably ejected in the form of a mist.

After the content liquid is ejected, the elastic deformation portion 52 can be elastically restored and deformed by canceling the squeeze deformation of the container body 2 to cancel the increase in the internal pressure of the accommodation space R1. As a result, the inside of the storage space R2 can be made to have a negative pressure, and air can be drawn into the storage space R2 from the outside along with the elastic restoration deformation of the elastically deformable portion 52 . Therefore, it is possible to quickly prepare for the next ejection of the content liquid.

Further, when the container body 2 to which the spray cap 1 is attached is stored after the content liquid is ejected, or when the product is distributed, the nozzle member 30 is rotated about the head axis O2 with respect to the head tube portion 20. , to the blocking position.
As a result, the communication between the first switching groove 25 and the second switching groove 37 can be blocked, so that the communication between the spin chamber 38 and the flow path 21 in the gas-liquid mixing section 32 can be blocked. Therefore, it is possible to shift to the ejection restriction state in which ejection of the content liquid through the nozzle hole 31 is restricted. Therefore, the container main body 2 with the spray cap 1 attached thereto can be stored, distributed, etc. in a state in which unintended ejection of the content liquid and liquid leakage from the nozzle hole 31 are suppressed.
Further, by a simple operation of rotating the nozzle member 30 with respect to the head tube portion 20, it is possible to quickly switch between the ejection possible state and the ejection restricted state, so that the operability is excellent.

(Second embodiment)
Next, a spray cap according to a second embodiment of the present invention will be described with reference to the drawings. In addition, in the second embodiment, the same reference numerals are given to the same parts as the constituent elements in the first embodiment, and the description thereof will be omitted.
In the first embodiment, the air introduction member 50 introduces air using the elastically deformable portion 52, but in this embodiment, the air introduction member introduces air using the middle plate.

As shown in FIG. 3, the spray cap 60 of this embodiment includes an air introducing member 61 including a cylinder tube 62, an intermediate plate 63, and a coil spring 64 (biasing member).
The cylinder tube 62 is arranged coaxially with the cap axis O<b>1 inside the mouth portion 3 of the container body 2 , and the upper end portion is formed integrally with the sheet body 51 . Note that the sheet body 51 and the cylinder tube 62 are formed as an integral molded product, and are made of, for example, a synthetic resin material.

The cylinder tube 62 extends downward from the sheet body 51 and has a tubular shape that opens downward. In the illustrated example, the length of the cylinder tube 62 along the cap axis O1 is the same as the length of the mouth portion 3 of the container body 2 . Furthermore, the cylinder tube 62 is formed, for example, in a circular shape in cross section, and is formed so as to extend straight in the vertical direction over the entire length. However, the shape of the cylinder tube 62 is not particularly limited, and for example, it may be formed in an elliptical or polygonal shape in cross section.
A lower end portion of the cylinder tube 62 is formed with an annular retainer flange 62a that protrudes radially inward.

The inside of the cylinder tube 62 configured in this manner is a storage space R2 capable of storing air. Further, inside the cylinder tube 62, a middle plate 63 is arranged so as to be vertically movable. As a result, the lower end opening of the cylinder tube 62 is closed by the middle plate 63 . Therefore, the storage space R2 is not communicated with the inside of the container body 2, and is communicated only with the air passage 22 through the air hole 15. As shown in FIG.

The middle plate 63 has a circular partition wall 65 that vertically partitions the inside of the cylinder tube 62 , and a sliding plate that is connected to the outer peripheral edge of the partition wall 65 and slidably fitted in the cylinder tube 62 . A cylinder 66 is provided and arranged coaxially with the cap axis O1.
The sliding cylinder 66 is formed in a tapered shape that gradually expands in diameter upward and downward from the central portion in the vertical direction, and has lip portions 66a positioned at both ends in the vertical direction. The lip portion 66a is in close sliding contact with the inner peripheral surface of the cylinder tube 62 while maintaining an appropriate frictional force. As a result, the sliding tube 66 is fitted to the cylinder tube 62 so as to be vertically slidable while ensuring a predetermined sealing performance between the lip portion 66 a and the inner peripheral surface of the cylinder tube 62 .

The inner plate 63 configured as described above moves upward within the cylinder tube 62 as the internal pressure of the accommodation space R1 inside the container body 2 rises. As a result, the air in the storage space R2 can be pushed out and introduced into the air passage 22 through the air holes 15 .

The coil spring 64 is arranged inside the cylinder tube 62 while being sandwiched between the partition wall 65 and the closing wall portion 12 . The material of the coil spring 64 is not particularly limited, and may be metal or synthetic resin, for example. Further, instead of the coil spring 64, a biasable member such as a leaf spring may be used.
The coil spring 64 serves to urge the middle plate 63 downward when the middle plate 63 moves upward with respect to the cylinder tube 62 . The coil spring 64 may be arranged in a compressed state in advance, or may be arranged in a natural length state.
The intermediate plate 63 is positioned at the lowest position by the sliding cylinder 66 coming into contact with the retainer flange 62a from above.

(Action of spray cap)
Even with the spray cap 60 of this embodiment configured as described above, it is possible to achieve the same effects as those of the first embodiment.
That is, as shown in FIG. 4, the content liquid can be introduced into the flow path 21 as indicated by an arrow F1 in FIG. . Furthermore, since stress can be applied to the middle plate 63 due to the increase in the internal pressure of the accommodation space R1, the middle plate 63 can be moved upward within the cylinder tube 62 against the urging force of the coil spring 64 . As a result, the air in the storage space R2 can be vigorously introduced into the air passage 22 through the air hole 15 as indicated by the arrow F3 in FIG. Therefore, as in the first embodiment, even a highly viscous content liquid can be stably ejected (sprayed) in the form of a mist.

After the content liquid is ejected, the inner plate 63 can be lowered by the urging force of the coil spring 64 by canceling the squeeze deformation of the container body 2 or the like to cancel the increase in the internal pressure of the accommodation space R1. As a result, as the middle plate 63 descends, the inside of the storage space R2 can be made to have a negative pressure, and air can be drawn into the storage space R2 from the outside. Therefore, it is possible to quickly prepare for the next ejection of the content liquid.

Although embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. Embodiments and modifications thereof include, for example, those that can be easily imagined by those skilled in the art, those that are substantially the same, and those within an equivalent range.

For example, in each of the above-described embodiments, as the container body, for example, a lamination peel type container in which the inner container is peelably laminated on the inner surface of the outer container, or a double container in which a gap is secured between the inner container and the outer container. may be adopted.

Furthermore, in each of the above-described embodiments, the case where the nozzle member is rotatably attached to the head tube portion around the head axis has been described as an example, but the present invention is not limited to this case, and the nozzle member cannot be rotated. may be attached to the However, since it is possible to switch between the ejection possible state and the ejection restricted state, it is preferable to mount the nozzle member rotatably as in the above embodiment.

Furthermore, in the above-described embodiment, a mesh member, for example, is incorporated inside the nozzle portion 33a of the nozzle member 30, so that the content liquid ejected in the form of mist is allowed to pass through the mesh member to be ejected in the form of bubbles. I don't mind.
In this way, by using the mesh member, it is possible to eject the content liquid in the form of bubbles that have been ejected in the form of a mist. can.

R1...Accommodation space R2...Storage space 1, 60...Spray cap 2...Container body 3...Mouth part of container body 10...Mounting cap 12...Blocking wall part 15...Air hole 16...Circulation hole 20...Head cylindrical part 21...Circulation Path 22 Air passage 30 Nozzle member 31 Nozzle hole 32 Gas-liquid mixing portion 38 Spin chamber 50, 61 Air introduction member 52 Elastic deformation portion 62 Cylinder cylinder 63 Middle plate 64 Coil spring (biasing Element)

Claims (5)

a mounting cap mounted on the mouth of a container body having a housing space for housing the content liquid;
a nozzle member formed with a nozzle hole for ejecting the content liquid and combined with the mounting cap,
The mounting cap is
a closed wall portion that closes the mouth portion of the container body and is formed with an air hole and a flow hole;
a cylindrical head portion protruding upward from the closing wall portion and having therein an air passage communicating with the air hole and a flow passage communicating with the inside of the container body through the flow hole; prepared,
The nozzle member is combined with the mounting cap by being mounted on the head cylinder,
The nozzle member is provided with a gas-liquid mixing portion that communicates with the nozzle hole and mixes the content liquid introduced from the container body through the flow passage with the air introduced through the air passage,
The inside of the mouth portion of the container body communicates with the air hole and does not communicate with the inside of the container body, and the air accumulated inside is released by the air hole as the internal pressure of the accommodation space rises. A spray cap is provided with an air introduction member for introducing air into the air passage through the air passage. A spray cap according to claim 1, wherein
The air introduction member has a storage space capable of storing air therein, and has an elastically deformable portion that is elastically deformable so as to expand and contract,
The spray cap, wherein the elastically deformable portion is elastically deformed so as to contract with an increase in internal pressure of the accommodation space, thereby introducing the air in the storage space into the air passage through the air hole. A spray cap according to claim 1, wherein
The air introduction member is
a cylinder tube having therein a storage space capable of storing air;
a middle plate arranged so as to be vertically movable inside the cylinder tube;
a biasing member that biases the inner plate downward,
The spray cap, wherein the middle plate moves upward as the internal pressure of the accommodation space rises, thereby introducing the air in the storage space into the air passage through the air hole. 4. A spray cap according to any one of claims 1 to 3,
The gas-liquid mixing unit has a spin chamber for swirling the content liquid introduced through the flow passage, and mixes the swirling content liquid in the spin chamber with air introduced through the air passage. . 5. A spray cap according to any one of claims 1 to 4,
The nozzle member is attached to the head tube portion so as to be rotatable around the axis of the head tube portion,
The gas-liquid mixing section switches between an ejection possible state in which communication with the flow path is permitted and an ejection restricted state in which communication with the flow path is blocked by rotation of the nozzle member with respect to the head cylinder. A spray cap is possible.

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