JP7116970B2 - cap - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cap, and more particularly to a cap that is attached to the mouth of a squeeze container filled with a liquid content such as soy sauce.

Conventionally, in a squeeze container, the pressure inside the squeeze container is increased by squeezing (compressing) the body portion of the squeeze container, and this pressure causes the contents inside the squeeze container to be discharged to the outside. Generally, the squeeze container has a cap attached to its mouth. Some of these caps are provided with a valve body, and this valve body opens and closes according to the pressure in the squeeze container to open and seal the inside of the squeeze container, thereby discharging the contents. It prevents liquid from dripping when filling the container and liquid leakage when the container is overturned.

For example, Patent Document 1 discloses a squeeze bottle dispensing device comprising a cap, a crown that engages with the cap, and a diaphragm valve having an S-shaped cross section interposed between the cap and the crown. . In this dispensing device, when the contents are to be discharged, the squeeze bottle is compressed to apply internal pressure, so that one valve peripheral portion of the deformed diaphragm valve is separated from the annular valve seat, and the contents are discharged from the fluid passage. It is configured to be discharged. Also, the compression of the squeeze bottle is released and the pressure of the squeeze bottle becomes equal to the atmospheric pressure, thereby closing the diaphragm valve and sealing the squeeze bottle.

Japanese Patent Publication No. 3-23428

However, in the invention described in Patent Document 1, by strongly squeezing the body of the squeeze bottle, the content liquid is injected directly into the center hole (discharge port) via the fluid passage formed by opening the diaphragm valve. Since the liquid flows in vigorously, it may be discharged with that momentum. As a result, there is a problem that it is difficult to discharge a desired amount of the contents to a predetermined place.

The present invention has been made in view of the above problems, prevents the contents from being vigorously discharged, and can discharge a desired amount (very small amount) to a desired place without increasing the supply speed. Another object of the present invention is to provide a cap that effectively seals a distribution channel.

As a means for solving the above problems, the invention described in claim 1 is a synthetic resin cap fitted to the mouth of a container, comprising a cylindrical outer wall having a ceiling wall at the top; a discharge nozzle projecting from an upper surface of a ceiling wall and having a discharge passage passing through the ceiling wall; a holder portion provided on the lower surface of the ceiling wall and having a communication hole communicating with the container; and the ceiling wall. A valve body held in a space between the holder part and disposed so as to always block the communication between the discharge passage of the discharge nozzle and the communication hole of the holder part, the valve body being located at the center a disk-shaped bottom wall portion having a flow passage in a portion thereof; an inclined wall portion extending radially outward from an outer peripheral edge of the disk-shaped bottom wall portion; and the flow passage of the disk-shaped bottom wall portion and a valve portion provided on the outer peripheral edge of the inclined wall portion, and each valve portion of the valve body is seated on either the ceiling wall or the holder portion. and the discharge channel of the discharge nozzle and the discharge side channel through which the contents in the container pass through the valve body are provided so as not to overlap in the axial direction. It is.

In the cap according to claim 1, when the contents are used, the squeeze container is squeezed (compressed) to apply internal pressure, whereby the valve body is pushed up by the internal pressure of the squeeze container and elastically deformed. Due to this elastic deformation, only one of the valve portions of the valve body is separated from the ceiling wall or the holder portion. As a result, the discharge channel of the discharge nozzle communicates with the communication hole of the holder portion, and the contents of the squeeze container are discharged to the outside.
On the other hand, by releasing the squeeze on the squeeze container, the inside of the squeeze container becomes negative pressure, and the valve body is pulled toward the squeeze container and elastically deformed. Due to this elastic deformation, the other of the valve portions of the valve body is separated from the ceiling wall or the holder portion, and the discharge channel and the squeeze container are directly communicated with each other. As a result, the contents remaining in the cap flow into the squeeze container together with the outside air. Then, when the pressure in the squeeze container becomes approximately the same as the atmospheric pressure, the valve body returns to its original state (the state in which each valve portion of the valve body is seated on either the ceiling wall or the holder portion), and discharge is performed. The communication between the discharge channel of the nozzle and the squeeze container can be cut off to keep the inside of the squeeze container in a sealed state.

Further, the cap according to claim 1 is provided so that the discharge channel of the discharge nozzle and the discharge side channel through which the contents in the container pass through the valve body do not overlap in the axial direction. It becomes difficult for the contents flowing from the flow passage to directly flow into the discharge flow passage of the discharge nozzle. That is, the content flowing out of the squeeze container once collides with the lower surface of the ceiling wall and the flow is regulated before flowing into the discharge channel of the discharge nozzle. As a result, the content can be prevented from being vigorously ejected to the outside, and a desired amount (very small amount) can be ejected to a desired location without increasing the supply speed.

The invention recited in claim 2 is the invention recited in claim 1, wherein the valve body is held in the space between the ceiling wall and the holder portion and surrounds the flow path of the disk-shaped bottom wall portion. The valve portion provided as described above is seated on the bottom surface of the holder portion, and the valve portion provided on the outer peripheral edge of the inclined wall portion is provided so as to be seated on the ceiling wall.

According to the second aspect of the invention, when the contents are discharged, the squeeze container is squeezed (compressed) to apply internal pressure. Due to this elastic deformation, the valve portion provided so as to surround the flow passage of the disk-shaped bottom wall portion is separated from the holder portion, and the communication hole of the holder portion communicates with the flow passage of the valve body. , the discharge channel and the squeeze container communicate with each other. At this time, the valve portion provided on the outer peripheral edge of the inclined wall portion remains seated on the lower surface of the ceiling wall. As a result, the contents of the squeeze container are discharged to the outside.
On the other hand, by releasing the squeeze on the squeeze container, the inside of the squeeze container becomes negative pressure, and the valve body is pulled toward the squeeze container and elastically deformed. Due to this elastic deformation, the valve portion provided on the outer peripheral edge of the inclined wall portion is separated from the lower surface of the ceiling wall, so that the discharge passage and the communication hole are directly communicated from the outer diameter side of the valve body. At this time, the valve portion provided so as to surround the flow path of the disk-shaped bottom wall portion is seated on the holder portion, thereby blocking the communication path between the discharge flow path and the squeeze container via the flow path of the valve body. be done. As a result, the contents remaining in the cap flow into the squeeze container together with the outside air. When the pressure in the squeeze container becomes approximately the same as the atmospheric pressure, the valve body returns to its original state (the state in which each valve portion is seated on the holder portion or the lower surface of the ceiling wall), and the discharge flow of the discharge nozzle is increased. The communication between the channel and the squeeze container can be cut off, and the inside of the squeeze container can be sealed.

The invention recited in claim 3 is the invention recited in claim 1, wherein the valve body is held in the space between the ceiling wall and the holder portion and surrounds the flow passage of the disk-shaped bottom wall portion. The valve portion provided as described above is seated on the ceiling wall, and the valve portion provided on the outer peripheral edge of the inclined wall portion is provided so as to be seated on the bottom surface of the holder portion.

In the cap according to claim 3, when the contents are discharged, the squeeze container is squeezed (compressed) to apply internal pressure, and the valve body is pushed up by the internal pressure of the squeeze container and elastically deformed. Due to this elastic deformation, the valve portion provided on the outer peripheral edge of the inclined wall portion is separated from the holder portion, and the communication hole of the holder portion from the outer peripheral side of the valve body communicates with the discharge passage of the discharge nozzle. The communication establishes communication between the discharge channel and the squeeze container. At this time, the valve portion provided so as to surround the flow path of the disk-shaped bottom wall portion remains seated on the lower surface of the ceiling wall. As a result, the contents of the squeeze container are discharged to the outside.
On the other hand, by releasing the squeeze on the squeeze container, the inside of the squeeze container becomes negative pressure, and the valve body is pulled toward the squeeze container and elastically deformed. Due to this elastic deformation, the valve portion provided so as to surround the flow path of the disk-shaped bottom wall is separated from the lower surface of the ceiling wall, and the flow path of the disk-shaped bottom wall and the discharge flow path are directly communicated. be done. At this time, since the valve portion provided on the outer peripheral edge of the inclined wall portion is seated on the holder portion, the path from the outer peripheral side of the valve body is cut off. As a result, the contents remaining in the cap flow into the squeeze container together with the outside air. When the pressure in the squeeze container becomes approximately the same as the atmospheric pressure, the valve body returns to its original state (the state in which each valve portion is seated on the holder portion or the lower surface of the ceiling wall), and the discharge flow of the discharge nozzle is increased. The communication between the channel and the squeeze container can be cut off, and the inside of the squeeze container can be sealed.

According to a fourth aspect of the present invention, in the second aspect of the invention, the opening area of the flow path of the disk-shaped bottom wall portion is formed to be smaller than the opening area of the discharge flow path of the discharge nozzle. It is characterized by

The invention recited in claim 5 is characterized in that, in the invention recited in claim 3, the opening area of the communication hole of the holder portion is formed to be smaller than the opening area of the discharge flow path of the discharge nozzle. It is.

In the cap according to claim 4 or 5, the opening area of the flow path of the disk-shaped bottom wall portion and the opening area of the communication hole of the holder portion are smaller than the opening area of the discharge flow path of the discharge nozzle. The amount of the contents flowing out of the squeeze container can be regulated by the flow path of the shaped bottom wall portion or the communication hole of the holder portion. As a result, the amount of the content flowing through the ejection channel of the ejection nozzle can be suppressed, and a desired amount can be ejected to the outside.

The invention recited in claim 6 is the invention recited in claims 1 to 5, wherein the flow passage of the valve body and the communication hole of the holder portion are provided so as not to overlap in the axial direction. It is characterized.

In the cap according to claim 6, since the flow passage of the valve body and the communicating hole of the holder part are provided so as not to overlap in the axial direction, the contents flowing from the communicating hole of the holder part directly flow through the valve body. It becomes difficult to flow on the road. That is, the content that has flowed through the communication hole of the holder portion once collides with the valve body and is regulated, and then flows into the flow passage of the valve body. Thereby, the supply speed can be suppressed.

The invention recited in claim 7 is based on the invention recited in claims 1 to 6, wherein the holder portion has a single communication hole, and the radial center of the communication hole extends radially of the holder portion. It is characterized by being arranged coaxially with the center or eccentrically arranged on the side where the container is inclined with respect to the radial center of the holder portion.

In the cap according to claim 7, the holder part has a single communicating hole, and the radial center of the communicating hole is arranged coaxially with the radial center of the holder part or relative to the radial center of the holder part. By arranging the container eccentrically on the tilted side, when the contents in the squeeze container are discharged, the contents flow through the single communication hole. It is possible to prevent mixing (foaming) with

According to the cap of the present invention, it is possible to prevent the contents from being vigorously discharged, to discharge a desired amount (very small amount) to a desired place without increasing the supply speed, and to effectively establish a distribution channel. can be provided with a cap that seals to the

FIG. 4 is a cross-sectional view of a cap attached to the mouth of the squeeze container according to the first embodiment of the present invention; 2A is a plan view, FIG. 2B is a cross-sectional view taken along line AA in FIG. 3A, and FIG. 3C is a bottom view. FIG. 2 shows a holder portion of the cap body shown in FIG. 1, where (a) is a plan view, (b) is a cross-sectional view taken along line BB of (a), and (c) is a bottom view. 2 shows the valve body of the cap body shown in FIG. 1, where (a) is a plan view, (b) is a sectional view taken along line CC of (a), and (c) is a bottom view. FIG. 2 shows the state of use of the cap shown in FIG. 1, where (a) is a cross-sectional view during discharge, and (b) is a cross-sectional view during intake. FIG. 5 is a cross-sectional view of a cap attached to the mouth of a squeeze container according to a second embodiment of the present invention; The holder part of the cap main body shown in FIG. 6 is shown, (a) is a top view, (b) is a bottom view. The valve body of the cap main body shown in FIG. 6 is shown, (a) is a top view, (b) is a bottom view. FIG. 7 shows the state of use of the cap shown in FIG. 6, where (a) is a cross-sectional view during discharge, and (b) is a cross-sectional view during intake. FIG. 11 is a cross-sectional view of a cap attached to the mouth of a squeeze container according to a third embodiment of the present invention; The holder part of the cap main body shown in FIG. 10 is shown, (a) is a top view, (b) is a bottom view. The valve body of the cap main body shown in FIG. 10 is shown, (a) is a top view, (b) is a bottom view. 11 shows the state of use of the cap shown in FIG. 10, where (a) is a cross-sectional view during discharge and (b) is a cross-sectional view during intake. FIG. 11 is a cross-sectional view of a cap attached to the mouth of a squeeze container according to a fourth embodiment of the present invention; The holder part of the cap main body shown in FIG. 14 is shown, (a) is a top view, (b) is a bottom view. The valve body of the cap main body shown in FIG. 14 is shown, (a) is a top view, (b) is a bottom view. Fig. 14 shows the state of use of the cap shown in Fig. 14, where (a) is a cross-sectional view during discharge, and (b) is a cross-sectional view during intake. FIG. 10 is a cross-sectional view of a cap attached to the mouth of a squeeze container according to a fifth embodiment of the present invention; The holder part of the cap main body shown in FIG. 18 is shown, (a) is a top view, (b) is a bottom view. The valve body of the cap main body shown in FIG. 18 is shown, (a) is a top view, (b) is a bottom view. FIG. 19 shows the state of use of the cap shown in FIG. 18, where (a) is a cross-sectional view during discharge and (b) is a cross-sectional view during intake. FIG. 11 is a cross-sectional view of a cap attached to the mouth of a squeeze container according to a sixth embodiment of the present invention; 23 is a bottom view of the holder part shown in FIG. 22; FIG. FIG. 22 shows the state of use of the cap shown in FIG. 22, where (a) is a cross-sectional view during discharge and (b) is a cross-sectional view during intake.

Hereinafter, the configuration of the cap according to the first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. FIG.
A cap 1 according to the first embodiment of the present invention is attached to a mouth portion 5 of a squeeze container 3, as shown in FIG. The cap 1 includes a cap body 7 including a discharge nozzle 11, a lid body 13 connected to the cap body 7, a holder portion 15 attached to the cap body 7, and held between the cap body 7 and the holder portion 15. and a valve body 17 which is formed.

First, the squeeze container 3 covering the cap 1 will be described with reference to FIG.
The squeeze container 3 is a deformable container made of a synthetic resin such as polyethylene or polyethylene terephthalate (PET), and is filled with fluid contents. Examples of the contents include ponzu sauce, soy sauce, cooking oil, lotion, and the like. The squeeze container 3 is of a type that applies internal pressure by squeezing (compressing) its body (not shown) to discharge the contents. At the mouth portion 5 of the squeeze container 3, an annular engaging ridge portion 19 protruding radially outward is engaged with a ridge portion 39 of the cylindrical outer wall portion 21 of the cap body 7, which will be described later. is formed. The engaging rib portion 19 has a tapered shape so that the peripheral edge of the tip thereof can be easily fitted to the cap 1 (see FIG. 1). Further, the squeeze container 3 is formed with an annular protrusion 20 protruding radially outward to prevent deformation of the body of the squeeze container 3 when the cap 1 is attached to the mouth portion 5 of the squeeze container 3 . The projecting portion 20 is provided so as to be positioned below the engaging ridge portion 19 .

Next, the configuration of the cap 1 will be described with reference to FIGS. 1 to 4. FIG.
The cap body 7 of the cap 1 is molded from a synthetic resin such as polyethylene, and has a cylindrical outer wall portion 21 fitted to the mouth portion 5 of the squeeze container 3, and a ceiling wall covering the upper portion of the cylindrical outer wall portion 21. 27, a cylindrical inner wall portion 23 concentrically provided inside the cylindrical outer wall portion 21 and suspended from the ceiling wall 27, and between the cylindrical outer wall portion 21 and the cylindrical inner wall portion 23. A cylindrical fitting wall portion 25 positioned concentrically and suspended from the ceiling wall 27, a discharge nozzle 11 integrally projecting upward from the ceiling wall 27 inside the cylindrical inner wall portion 23, consists of

The discharge nozzle 11 projecting from the upper surface of the ceiling wall 27 has a discharge flow path 29 that communicates from the lower surface to the upper surface of the ceiling wall 27, and the tip thereof is formed so as to increase in diameter from the base end toward the tip. ing. The radial center of the discharge passage 29 of the discharge nozzle 11 is eccentric to the side opposite to the hinge portion 31 with respect to the radial center of the barrel portion of the squeeze container 3 (see FIGS. 1 and 2). Further, in this embodiment, the diameter φ1 of the discharge channel 29 is set to 4 mm.

The cap body 13 covering the cap body 7 is for opening and closing the discharge flow path 29 of the discharge nozzle 11 and for covering or opening the upper surface of the cap body 7 . The lid body 13 is integrally connected to the upper edge of the cylindrical outer wall portion 21 of the cap body 7 via the hinge portion 31 . A projection 33 is provided on the outer peripheral wall of the lid 13 on the opposite side of the hinge portion 31 so that the user can hook a finger or nail when opening the lid 13 . Furthermore, a cylindrical plug portion 35 which is closely fitted to the discharge flow path 29 is vertically provided on the lower surface of the lid body 13 at a position facing the discharge flow path 29 projecting from the upper surface of the cap body 7 . be. The cylindrical plug portion 35 has a tapered outer peripheral portion at the tip. Furthermore, the cover 13 has a protrusion engaging portion 37 annularly extending in the circumferential direction formed on the lower edge of the inner peripheral surface thereof. In addition, on the outer peripheral upper surface of the ceiling wall 27, a ridge locking portion 49 extending annularly along the circumferential direction is formed. The locking portion 37 and the projection locking portion 49 of the ceiling wall 27 are engaged with each other.

The cylindrical outer wall portion 21 has an annular ridge portion 39 that protrudes radially inward and that engages with the engaging ridge portion 19 of the mouth portion 5 of the squeeze container 3 is formed on the inner peripheral portion of the distal end thereof. . The ridge portion 39 has a tapered shape so that the diameter of the cylindrical outer wall portion 21 decreases from the distal end toward the proximal end. A first space 41 (see FIGS. 1 and 2) for inserting the mouth portion 5 of the squeeze container 3 is provided between the cylindrical outer wall portion 21 and the cylindrical fitting wall portion 25 . The cylindrical fitting wall portion 25 has a tapered outer peripheral portion at the tip to facilitate the insertion of the squeeze container 3 into the first space 41 (see FIG. 1). The cylindrical inner wall portion 23 has an annular engaging projection portion 43 formed on its outer peripheral portion to engage with an engaging projecting portion 53 (see below) of the holder portion 15 . A centering 45 (positioning portion) for positioning the valve body 17 is formed in the portion. A second space 47 (see FIGS. 1 and 2) for inserting the holder portion 15 is formed between the cylindrical inner wall portion 23 and the cylindrical fitting wall portion 25 .

As shown in FIGS. 1 and 3, the holder portion 15 has a bottomed cylindrical shape made of synthetic resin such as polypropylene, and a plurality of communicating holes 51 having a substantially circular shape in a plan view are formed in the bottom surface thereof. . The plurality of communication holes 51 are formed outside a certain range of the bottom surface of the holder portion 15, that is, outside a circle drawn from the center O of the holder portion 15 with a radius P3 (see the dashed-dotted line circle in FIG. 3A). A plurality of (six in the illustrated example) are drilled at predetermined intervals in the direction. No communicating hole 51 is provided in the inner region of the radius P3. An annular engaging protrusion 53 that engages with the engaging protrusion 43 of the cylindrical inner wall portion 23 is formed on the inner peripheral portion of the holder portion 15 . A portion of the inner surface of the circle drawn with the radius P3 of the holder portion 15 serves as the valve seat of the valve body 17 . In this embodiment, the diameter φ2 of the communication holes 51 is set to 2.5 mm. The total area of the openings of the plurality of communication holes 51 (that is, the sum of the areas of the openings of the plurality of communication holes 51) is set larger than the area of the openings of the flow passages 55 of the valve body 17. As shown in FIG. The holder 15 is fitted to the outer peripheral surface of the cylindrical inner wall portion 23 from below, and is attached to the lower surface of the cap body 7 as shown in FIG. holds the valve body 17.

As shown in FIGS. 1 and 4, the valve body 17 has an elastically deformable, substantially dish-like shape and allows the flow of contents between the discharge passage 29 of the discharge nozzle 11 and the communication hole 51 of the holder portion 15. It communicates or blocks. Specifically, the valve body 17 is molded from a synthetic resin such as polyethylene, and extends obliquely upward in a radially outward direction from a disk-shaped bottom wall portion 17a and an outer edge portion of the disk-shaped bottom wall portion 17a. and an oblique wall portion 17b. Here, the thickness dimension of the oblique wall portion 17b is set to be smaller than the thickness dimension of the disk-shaped bottom wall portion 17a so that the valve body 17 is easily elastically deformed. The disk-shaped bottom wall portion 17a of the valve body 17 is provided with a flow path 55 (discharge-side flow path) penetrating vertically through the disk-shaped bottom wall portion 17a and on the lower surface so as to annularly surround the flow path 55. A discharge valve portion 57 (valve portion) is provided. The discharge valve portion 57 has an annular shape in plan view, and its radius is set shorter than the radius P3 of the holder portion 15 shown in FIG. 3(a). Further, an intake valve portion 59 (valve portion) is provided so as to annularly surround the discharge flow path 29 of the discharge nozzle 11 at the outer peripheral upper edge portion of the inclined wall portion 17b. The flow passage 55 is for guiding the contents flowing from the communication hole 51 of the holder portion 15 to the discharge flow passage 29, is formed substantially in the center of the disk-shaped bottom wall portion 17a, and has a substantially circular shape in plan view. None. The flow path 55 is provided so as not to overlap in the axial direction with respect to the discharge flow path 29 of the discharge nozzle 11 and the plurality of communication holes 51 of the holder portion 15 (see FIG. 1). Specifically, the distance P1 between the axis L1 of the discharge flow path 29 (see the dashed line in FIG. 1) and the axis L2 of the flow path 55 (see the dashed line in FIG. 1) is the radius of the discharge flow path 29 and the flow path. 55 plus the radius (in this embodiment, the distance P1 is about 5 mm). Furthermore, the distance P2 between the axis L3 (see the dashed line in FIG. 1) of the plurality of communication holes 51 and the axis L2 of the flow path 55 is larger than the sum of the radius of the discharge flow path 29 and the radius of the flow path 55. It is set long (in this embodiment, the distance P2 is approximately 5.7 mm). Further, in this embodiment, the diameter φ3 of the flow path 55 is set to 3 mm. Here, the area of the opening of the flow path 55 is set smaller than the area of the opening of the discharge flow path 29 of the discharge nozzle 11 .

As shown in FIG. 1, the discharge valve portion 57 is formed in an annular shape on the outer edge portion of the disk-shaped bottom wall portion 17a so as to face the bottom surface of the holder portion 15, and the tip thereof has a hemispherical cross-sectional shape. (See Figure 4). Here, the bottom surface of the holder portion 15 facing the discharge valve portion 57 and within a radius P3 (within a certain range of the bottom surface of the halter portion 15) functions as a valve seat. The intake valve portion 59 is formed in an annular shape on the outer peripheral edge portion of the slanted wall portion 17b so as to face the ceiling wall 27, and the tip thereof has a hemispherical cross-sectional shape (see FIG. 4). Here, the wall surface of the ceiling wall 27 facing the intake valve portion 59 functions as a valve seat, and the discharge flow path 29 is provided in the ceiling wall 27 surrounded by the intake valve portion 59 .

Next, a method for assembling the cap 1 according to the first embodiment and a method for attaching the cap 1 to the mouth portion 5 of the squeeze container 3 will be described.
First, the valve body 17 is accommodated in the cylindrical inner wall portion 23 with the intake valve portion 59 of the valve body 17 opposed to the ceiling wall 27 . At this time, the position of the valve body 17 is determined by the centering 45 of the cylindrical inner wall portion 23 . The inner peripheral surface of the holder portion 15 is mounted along the outer peripheral wall surface of the cylindrical inner wall portion 23 of the cap body 7 . When the holder portion 15 is attached, the engaging protrusions 53 of the holder portion 15 are engaged with the engaging protrusions 43 of the cylindrical inner wall portion 23, and this engagement prevents the holder 15 from coming off. The valve body 17 is held in a space formed by cooperation between the cap body 7 and the holder portion 15 . In this state, the discharge valve portion 57 of the valve body 17 is seated on the bottom surface of the holder portion 15 where the plurality of communication holes 51 are not formed, and the intake valve portion 59 is seated on the lower surface of the ceiling wall 27. (See Figure 1). By this assembly, the flow path 55 of the valve body 17 is arranged so as not to overlap the discharge flow path 29 and the plurality of communication holes 51 . This completes assembly of the cap 1 .

Then, the mouth portion 5 of the squeeze container 3 is inserted into the first space 41 between the cylindrical outer wall portion 21 and the cylindrical fitting wall portion 25 along the inner peripheral wall of the cylindrical outer wall portion 21 . At this time, the engaging ridges 19 of the mouth portion 5 of the squeeze container 3 are engaged with the ridges 39 of the cylindrical outer wall portion 21, thereby preventing the squeeze container 3 from coming off. Thus, attachment of the cap 1 to the squeeze container 3 is completed.

Next, the action of the cap 1 according to the first embodiment of the invention will be described with reference to FIG.
When using the contents in the squeeze container 3, first, the lid 13 is opened to expose the discharge nozzle 11 to the outside. At this time, since the body (not shown) of the squeeze container 3 is not squeezed, the discharge valve portion 57 and the intake valve portion 59 of the valve body 17 are seated on the bottom surface of the holder portion 15 and the wall surface of the ceiling wall 27. It remains.

Then, the body of the squeeze container 3 is squeezed by directing the discharge nozzle 11 downward to apply internal pressure to the inside of the squeeze container 3 . This internal pressure causes the contents to flow in through the plurality of communication holes 51 and push up the lower surface of the inclined wall portion 17b of the valve body 17, thereby elastically deforming the valve body 17 and causing the discharge valve portion 57 of the valve body 17 to open. It is separated from the bottom surface of the holder part 15 . At this time, the intake valve portion 59 of the valve body 17 remains seated on the lower surface of the ceiling wall 27 . As a result, the communication hole 51 of the holder portion 15 and the discharge channel 29 of the discharge nozzle 11 are communicated with each other, and this communication allows the squeeze container 3 and the discharge channel 29 of the discharge nozzle 11 to be communicated with each other. As a result, the contents in the squeeze container 3 pass through the plurality of communication holes 51 of the holder portion 15, pass through the flow path 55 (that is, discharge-side flow path) of the valve body 17, hit the lower surface of the ceiling wall 27, and then are discharged. It is discharged to the outside through the discharge channel 29 of the nozzle 11 (see the arrow in FIG. 5(a)). Here, the discharge valve portion 57 is held open by the fluid pressure of the contents flowing from the communication hole 51 to the flow path 55 and the fluid pressure of the contents flowing from the flow path 55 to the discharge flow path 29 . This allows the contents to flow smoothly and in a constant amount. In addition, since the area of the opening of the flow path 55 of the valve body 17 is smaller than the total area of the openings of the plurality of communication holes 51 of the holder portion 15, the flow rate of the contents passing through the flow path 55 is regulated. The amount to be discharged can be restricted, and an appropriate amount can be discharged. Furthermore, when the contents pass through the flow path 55 of the valve body 17 , the contents collide with the lower surface of the ceiling wall 27 and change course to head toward the discharge flow path 29 . As a result, the force of the flow of the contents is weakened, and it is possible to prevent the contents from being vigorously discharged to the outside.

Next, when discontinuing the use of the contents, after the contents are discharged, the squeezing of the body of the squeeze container 3 is stopped. As a result, the inside of the squeeze container 3 becomes negative pressure, and the valve body 17 is elastically deformed by restoring itself and being pulled toward the squeeze container 3 side. Due to this elastic deformation, the intake valve portion 59 is separated from the bottom surface of the ceiling wall 27, and the discharge valve portion 57 is seated on the bottom surface of the holder portion 15 (see FIG. 5B). As a result, the path passing through the flow path 55 of the valve body 17 is blocked, but the discharge path 29 and the communication hole 51 are directly communicated from the outer peripheral side of the valve body 17 (see the arrow in FIG. 5B). ). As a result, the outside air flows into the squeeze container 3 from the flow path 48 (that is, the intake side flow path) between the cylindrical inner wall portion 23 of the cap body 7 and the outer peripheral surface of the intake valve portion 59 of the valve body 17. be. At this time, the content remaining in the cap 1 also flows into the squeeze container 3 with the inflow of outside air. As a result, the content is less likely to remain in the cap 1 and less likely to drip.

When the pressure in the squeeze container 3 becomes substantially equal to the atmospheric pressure, the valve body 17 is restored, and the discharge valve portion 57 and the intake valve portion 59 are seated on the bottom surface of the holder portion 15 and the ceiling wall 27. to block the discharge channel 29 and the squeeze container 3 . Then, when the hinge portion 31 is bent and the lid body 13 is put on the upper surface of the cap body 7 so as to cover the upper surface of the cap body 7 , the protrusion engaging portion 37 of the lid body 13 is engaged with the protrusion engaging portion 49 of the ceiling wall 27 . At the same time, the cylindrical plug portion 35 is tightly fitted into the discharge channel 29 of the discharge nozzle 11 (see FIG. 1). As a result, foreign matter can be prevented from entering the cap main body 7, and the inside of the squeeze container 3 can be double-sealed, so that the contents inside the squeeze container 3 can be prevented from being oxidized.

According to the cap 1 according to the first embodiment of the present invention, since the area of the opening of the flow path 55 of the valve body 17 is smaller than the area of the opening of the discharge flow path 29 of the discharge nozzle 11, the content flowing out of the squeeze container 3 is reduced. When the contents pass through the flow path 55, the flow rate of the contents is regulated, and the amount of the contents discharged from the discharge nozzle 11 to the outside can be suppressed, so that an appropriate amount of contents can be discharged to the discharge location.

Further, according to the cap 1 according to the first embodiment of the present invention, the distance P1 between the axis L1 of the discharge passage 29 and the axis L2 of the flow passage 55 is the radius of the discharge passage 29 and the radius of the flow passage 55. Since it is set to be longer than the added value, the flow path 55 of the valve body 17 does not overlap the discharge flow path 29 of the discharge nozzle 11 . As a result, the contents flowing from the flow path 55 once collide with the lower surface of the ceiling wall 27 and then are guided to the discharge flow path 29, so that the flow of the contents is weakened and the force of discharge to the outside is also weakened. can be done. As a result, an appropriate amount can be discharged to the discharge location.

Furthermore, according to the cap 1 according to the first embodiment of the present invention, the flow path 55 of the valve body 17 and the plurality of communication holes 51 of the holder portion 15 do not overlap each other, and the area of the opening of the flow path 55 is plural. , the contents passing through the plurality of communication holes 51 once collide with the lower surface of the valve body 17, weakening the momentum of the flow of the contents to the outside. It is possible to suppress the discharge amount.

According to the cap 1 according to the first embodiment of the present invention, when the squeeze container 3 is compressed, the fluid pressure of the contents flowing from the communication hole 51 to the flow path 55 and the fluid pressure of the contents flowing from the flow path 55 to the discharge flow path 29 The open state of the discharge valve portion 57 is maintained by the pressure. As a result, when the contents are used, the communication between the squeeze container 3 and the discharge channel 29 can be maintained, and the contents can be discharged to the outside smoothly and at a fixed amount.

According to the cap 1 according to the first embodiment of the present invention, when the compression of the body portion of the squeeze container 3 is released, the pressure inside the squeeze container 3 becomes negative pressure, and the valve body 17 is pulled toward the squeeze container 3 side. Due to the elastic deformation, the intake valve portion 59 is separated from the wall surface of the ceiling wall 27 . As a result, the contents remaining in the discharge nozzle 11 are sucked into the squeeze container 3 together with the outside air, so that when the contents are discharged again, dripping can be prevented.

Further, according to the cap 1 according to the first embodiment of the present invention, the holder portion 15 is configured to be attached to the lower surface of the cap body 7 together with the valve body 17, so the structure of the cap body 7 is simplified.

Next, a cap 1A according to a second embodiment of the invention will be described with reference to FIGS. 6 to 9. FIG. In the following description, the same parts as those of the cap 1 of the first embodiment are denoted by the same reference numerals, and only different parts will be described in detail.
The cylindrical inner wall portion 23 of the cap body 7 of the cap 1A according to the second embodiment of the present invention is fitted between an outer wall portion 52 and an inner wall portion 54 of the holder portion 15, which will be described later.

As shown in FIGS. 6 and 7, the bottom surface of the holder portion 15 is provided with a communication hole 51A (one in this embodiment) having a substantially circular shape in plan view. Further, the holder portion 15 is concentrically provided with an inner wall portion 54 erected from the bottom surface inside the outer wall portion 52, and the inner peripheral surface of the inner wall portion 54 is provided with a predetermined interval in the circumferential direction. A plurality of centerings 45 (positioning portions) for positioning the valve body 17 are protruded. In this embodiment, the diameter φ2 of the communication hole 51A is set to 3 mm. The area of the opening of the communication hole 51A is set smaller than the area of the opening of the ejection channel 29 of the ejection nozzle 11 . The holder portion 15 is fitted to the outer peripheral surface of the cylindrical inner wall portion 23 from below, and is attached to the lower surface of the cap body 7 as shown in FIG. The valve body 17 is held by 32 with the disk-shaped bottom wall portion 17 a of the valve body 17 facing the ceiling wall 27 of the cap body 7 .

As shown in FIGS. 6 and 8, the valve body 17 includes a disk-shaped bottom wall portion 17a provided at the center of the upper portion thereof, and an outer peripheral edge portion of the disk-shaped bottom wall portion 17a. and an oblique wall portion 17b extending in a curved shape downward. Here, the thickness dimension of the oblique wall portion 17b is set to be smaller than the thickness dimension of the disk-shaped bottom wall portion 17a so that the valve body 17 is easily elastically deformed. The disk-shaped bottom wall portion 17a of the valve body 17 is provided with a flow passage 55A that vertically penetrates the disk-shaped bottom wall portion 17a and an intake valve portion 59 (valve portion) that annularly surrounds the flow passage 55A on the upper surface. A discharge valve portion 57 (valve portion) that annularly surrounds the communication hole 51A of the holder portion 15 is provided at the outer peripheral lower edge portion of the inclined wall portion 17b.

As shown in FIG. 6, when the valve body 17 is held between the cap body 7 and the holder portion 15 with the disk-shaped bottom wall portion 17a of the valve body 17 facing the ceiling wall 27 of the cap body 7, The intake valve portion 59 of the valve body 17 contacts the ceiling wall 27 of the cap body 7 , and the discharge valve portion 57 of the valve body 17 contacts the bottom surface of the holder portion 15 . The discharge valve portion 57 of the valve body 17 abuts on the bottom surface of the holder portion 15 on a circle having a radius P3 from the center O of the holder portion 15 (see the dashed-dotted line in FIG. 7A). function as a seat. The valve body 17 normally blocks communication between the discharge flow path 29 of the discharge nozzle 11 and the communication hole 51A of the holder portion 15 . A flow path 48 (that is, a discharge-side flow path) between the flow path 55A of the valve body 17 and the outer peripheral surface of the discharge valve portion 57 and the inner wall portion 54 of the holder portion 15 corresponds to the discharge flow path 29 of the discharge nozzle 11 and the holder. It is provided so as not to overlap with the communicating hole 51A of the portion 15 in the axial direction (see L1, L2, L3 and L4 in FIG. 6). Also, the area of the flow path 48 between the outer peripheral surface of the discharge valve portion 57 and the inner wall portion 54 of the holder portion 15 is set larger than the opening area of the communication hole 51E of the bottom wall portion 15b of the holder 15 .

Next, the action of the cap 1A according to the second embodiment of the invention will be described with reference to FIG.
When the contents in the squeeze container 3 are discharged, the body of the squeeze container 3 is squeezed by directing the discharge nozzle 11 downward, and internal pressure is applied to the inside of the squeeze container 3. This internal pressure causes the contents to communicate. It flows from the hole 51A and pushes up the lower surface of the inclined wall portion 17b of the valve body 17. As shown in FIG. As a result, the intake valve portion 59 of the valve body 17 is pressed against the ceiling wall 27, the valve body 17 is elastically deformed, and the discharge valve portion 57 of the valve body 17 is separated from the bottom surface of the holder portion 15. The object passes through the flow path 48 (discharge-side flow path) between the outer peripheral surface of the discharge valve portion 57 and the inner wall portion 54 of the holder portion 15 , hits the lower surface of the ceiling wall 27 , and then passes through the discharge flow path 29 of the discharge nozzle 11 . and is discharged to the outside (see the arrow in FIG. 9(a)). At this time, the communication hole 51A of the holder 15, which is smaller than the opening area of the discharge channel 29 of the discharge nozzle 11, restricts the discharge amount of the contents in the squeeze container 3, preventing the contents from being vigorously discharged. A fixed amount of liquid can be discharged.

Next, when the discharge of the contents is stopped, by stopping the compression of the body of the squeeze container 3, the squeeze container 3 is restored, the contents are moved, etc., and the negative pressure in the squeeze container 3 and the valve body 17 The periphery of the valve body 17 is pulled toward the squeeze container 3 by its own restoring force, and the valve body 17 returns to its original state. After the discharge passage 57 of the valve body 17 contacts the holder portion 15 due to the remaining negative pressure, it is further elastically deformed, and the intake valve portion 59 is separated from the lower surface of the ceiling wall 27 . As a result, the flow path from the communication hole 51A passing through the outer peripheral side of the valve body 17 to the discharge flow path 29 is blocked, but the discharge flow path 29 passing through the flow path 55A of the valve body 17 (that is, the intake side flow path) is blocked. to the communication hole 51A of the holder portion 15 (see the arrow in FIG. 9(b)). As a result, the outside air flows into the squeeze container 3 together with the contents remaining in the discharge flow path 29 through the flow path 55A of the valve body 17 and the communication hole 51A of the holder portion 15 (see FIG. 9). (See the arrow in (b)), the content is less likely to remain in the cap 1A and less likely to drip.

When the pressure in the squeeze container 3 becomes substantially equal to the atmospheric pressure, the valve body 17 is restored, and the discharge valve portion 57 and the intake valve portion 59 are seated on the bottom surface of the holder portion 15 and the ceiling wall 27. to block the discharge channel 29 and the squeeze container 3 .

According to the cap 1A according to the second embodiment of the present invention, when the contents are to be discharged, the contents in the squeeze container 3 pass from the outer peripheral side of the valve body 17 through the discharge passage 29 of the discharge nozzle 11 to the outside. When the content is discharged and the discharge is stopped, the flow path 55A of the valve body 17 and the communication hole 51A of the holder portion 15 are communicated with each other, and the content remaining in the cap 1A is flowed into the squeeze container 3 together with the outside air. be. As a result, the same effects as those of the cap 1 according to the above-described first embodiment can be obtained.

Next, a cap 1B according to a third embodiment of the invention will be described with reference to FIGS. 10 to 13. FIG. In the following description, the same reference numerals are used for the same parts as those of the cap 1A of the second embodiment, and only different parts will be described in detail.

The difference between the cap 1B according to the third embodiment and the cap 1A according to the second embodiment is the number of communication holes drilled in the holder portion and the number of flow passages drilled in the disk-shaped bottom wall portion of the valve body. are different, and other configurations are the same.
Specifically, as shown in FIGS. 10 and 11, the holder portion 15 has a communication hole 51B having a substantially circular shape in plan view at substantially the center of the bottom surface thereof. In this embodiment, the diameter φ2 of the communication hole 51B is set to 3 mm. The area of the opening of the communication hole 51B is set smaller than the area of the opening of the ejection channel 29 of the ejection nozzle 11 .

As shown in FIGS. 10 and 12, the disk-shaped bottom wall portion 17a of the valve body 17 has a plurality of flow passages 55B extending vertically through the disk-shaped bottom wall portion 17a. ) are drilled so as to touch the inside of the A flow path 48 (that is, a discharge-side flow path) between the flow path 55B of the valve body 17 and the outer peripheral surface of the discharge valve portion 57 and the inner wall portion 54 of the holder portion 15 corresponds to the discharge flow path 29 of the discharge nozzle 11 and the holder. It is provided so as not to overlap with the communication hole 51B of the portion 15 in the axial direction (see axes L1, L2, L3 and L4 in FIG. 10). Also, the area of the flow path 48 between the outer peripheral surface of the discharge valve portion 57 and the inner wall portion 54 of the holder portion 15 is set larger than the opening area of the communication hole 51E of the bottom wall portion 15b of the holder 15 .

Next, operation of the cap 1B according to the third embodiment of the invention will be described with reference to FIG.
When the contents in the squeeze container 3 are to be discharged, when the internal pressure is applied to the squeeze container 3, the internal pressure causes the contents to flow in through the communication hole 51B and push up the lower surface of the inclined wall portion 17b of the valve body 17. . As a result, the intake valve portion 59 of the valve body 17 is pressed against the ceiling wall 27, the valve body 17 is elastically deformed, and the discharge valve portion 57 of the valve body 17 is separated from the bottom surface of the holder portion 15. The object passes through the flow path 48 (discharge-side flow path) between the outer peripheral surface of the discharge valve portion 57 and the inner wall portion 54 of the holder portion 15 , hits the lower surface of the ceiling wall 27 , and then passes through the discharge flow path 29 of the discharge nozzle 11 . (See the arrow in FIG. 13(a)). At this time, the communication hole 51B of the holder 15, which is smaller than the opening area of the discharge channel 29 of the discharge nozzle 11, restricts the discharge amount of the contents in the squeeze container 3, preventing the contents from being vigorously discharged. A fixed amount of liquid can be discharged.

Next, when stopping the discharge of the contents, by stopping the compression of the body of the squeeze container 3, the valve body 17 returns to its original state due to the negative pressure inside the squeeze container 3 and the restoring force of the valve body 17 itself. return to state. The remaining negative pressure further elastically deforms the valve body 17 , causing the intake valve portion 59 to separate from the lower surface of the ceiling wall 27 . As a result, the flow path from the communication hole 51B passing through the outer peripheral side of the valve body 17 to the discharge flow path 29 is blocked. (see FIG. 13(b)). As a result, the outside air flows into the squeeze container 3 together with the contents remaining in the discharge passage 29 through the flow passage 55B (intake-side passage) of the valve body 17 and the communication hole 51B of the holder portion 15. (See the arrow in FIG. 13(b)), so that the contents are less likely to remain in the cap 1B and are less likely to drip.

According to the cap 1B according to the third embodiment of the present invention, when the contents are to be discharged, the contents in the squeeze container 3 pass from the outer peripheral side of the valve body 17 through the discharge passage 29 of the discharge nozzle 11 to the outside. When the contents are discharged and the discharge is stopped, the plurality of flow passages 55B of the valve body 17 and the communication holes 51B of the holder portion 15 are communicated with each other, and the contents remaining in the cap 1B are discharged into the squeeze container 3 together with the outside air. let it flow in. As a result, the same effects as those of the cap 1 according to the above-described first embodiment can be obtained.

Next, a cap 1C according to a fourth embodiment of the invention will be described with reference to FIGS. 14 to 17. FIG. In the following description, the same reference numerals are used for the same parts in the caps 1, 1A, and 1B of the first, second, and third embodiments, and only different parts will be described in detail.

The difference between the cap 1C according to the fourth embodiment and the caps 1, 1A, and 1B according to the first, second, and third embodiments is that the structures of the cap body, the lid, the holder, and the valve are different. , the other configurations are the same.
Specifically, the cap main body 7 includes a cylindrical outer wall portion 21, a ceiling wall 27 covering the upper portion of the cylindrical outer wall portion 21, and a conical recess that is inclined upward from the center toward the center. a cylindrical inner wall portion 23 and a cylindrical fitting wall portion 25 that hang down inside the cylindrical outer wall portion 21; be done. In the lower part of the discharge nozzle 11, a bottomed cylindrical body 11a is integrally protruded in a conical recess formed by the inclined wall 28, and a plurality of discharge inlets 30, 30 (two places in the figure) are provided on the outer periphery thereof. is provided to communicate with the discharge flow path 29C passing through the ceiling wall 27 (inclined wall 28). The bottom plate 11b of the bottomed cylindrical body 11a of the discharge nozzle 11 is provided on substantially the same plane as the lower surface of the ceiling wall 27. As shown in FIG. The bottom plate 11 b is part of the ceiling wall 27 . In the present description, "substantially on the same plane" means not only completely identical but also includes positional errors within a permissible range in terms of structure and dimensional accuracy.

As shown in FIGS. 14 and 15, the holder portion 15 is formed so that its bottom surface protrudes inward leaving an edge, and a plurality of communication holes 51C, which are substantially circular in plan view, are formed in the bottom surface of the holder portion. Six holes are drilled at approximately equal intervals on the same radius from the center point O of 15 . A diameter φ2 of the communication hole 51C is set to 3 mm. The total area of the openings of the communication holes 51C is set larger than the area of the openings of the flow passage 55C of the valve body 17. As shown in FIG.

As shown in FIGS. 14 and 16, the valve body 17 has a disk-shaped bottom wall portion 17a having a flow passage 55C in the center and a disk-shaped bottom wall portion 17a. A slanted wall portion 17b extending obliquely upward radially outward from the outer peripheral edge portion, a discharge valve portion 57 (valve portion) provided around the disk-shaped bottom wall portion 17a, and a discharge valve portion 57 provided around the slanted wall portion 17b. and an intake valve portion 59 (valve portion). The only difference is that a concave portion 17c is formed inside the disk-shaped bottom wall portion 17a. The flow path 55C is provided so as not to overlap the plurality of discharge inlets 30 of the discharge flow path 29C of the discharge nozzle 11 and the communication hole 51C of the holder portion 15 in the axial direction (axis lines L1 and L2 in FIG. 14). and L3). The area of the opening of the flow passage 55C is set smaller than the total area of the openings of the plurality of discharge inlets 30 of the discharge nozzle 11 . The valve body 17 is held in the space 32 between the ceiling wall 27 of the cap body 7 and the holder portion 15 with the discharge valve portion 57 in contact with the bottom surface of the holder portion 15 .

Next, operation of the cap 1C according to the fourth embodiment of the invention will be described with reference to FIG.
When the contents of the squeeze container 3 are to be discharged, when the internal pressure is applied to the squeeze container 3, the internal pressure causes the contents to flow in through the communication hole 51C and push up the lower surface of the inclined wall portion 17b of the valve body 17. . As a result, the valve body 17 is elastically deformed, the discharge valve portion 57 of the valve body 17 is separated from the bottom surface of the holder portion 15, and the contents pass through the flow passage 55C of the valve body 17 and the discharge nozzle 11. After hitting the lower surface of the bottom plate 11b, it passes through the discharge inlets 30, 30 along the conical concave portion formed by the inclined wall 28, passes through the discharge channel 29C of the discharge nozzle 11, and is discharged to the outside (Fig. 17(a)). arrow). As a result, the content can be ejected in a predetermined amount without being vigorously ejected.

Next, when stopping the discharge of the contents, by stopping the compression of the body of the squeeze container 3, the valve body 17 returns to its original state due to the negative pressure inside the squeeze container 3 and the restoring force of the valve body 17 itself. return to state. The remaining negative pressure further elastically deforms the valve body 17 , causing the intake valve portion 59 to separate from the lower surface of the ceiling wall 27 . As a result, the flow path from the plurality of communication holes 51C passing through the flow path 55C of the valve body 17 to the discharge flow path 29C is blocked, but the flow path from the discharge flow path 29C passing through the outer peripheral side of the valve body 17 to the plurality of communication holes 51C is blocked. A flow path to is generated (see FIG. 17(b)). As a result, together with the contents remaining in the discharge flow path 29C, outside air passes through the outer peripheral side of the valve body 17, passes through the plurality of communication holes 51C of the holder portion 15, and flows into the squeeze container 3 (Fig. 17(b) arrow), the content is less likely to remain in the cap 1C and less likely to drip.

According to the cap 1C according to the fourth embodiment of the present invention, the same effects as those of the cap 1 according to the first embodiment described above can be obtained.

Next, a cap 1D according to a fifth embodiment of the invention will be described with reference to FIGS. 18 to 21. FIG. In the following description, the same reference numerals are used for the same parts as in the cap 1C of the fourth embodiment, and only the different parts will be described in detail.

The differences between the cap 1D according to the fifth embodiment and the cap 1C according to the fourth embodiment are the number of communication holes drilled in the holder portion, the arrangement of the valve body, and the positional relationship between the communication holes and the flow passages. and the other configurations are the same.
Specifically, as shown in FIGS. 18 and 19, the holder portion 15 has one communicating hole 51D which is substantially circular in plan view and is bored in substantially the center of the bottom surface thereof. In this embodiment, the diameter φ2 of the communication hole 51D is set to 3 mm. The opening area of the communication hole 51</b>D is set smaller than the total area of the discharge inlets 30 , 30 of the discharge nozzle 11 .

As shown in FIGS. 18 and 20, the valve body 17 of the cap 1D is in a state in which the valve body 17 of the cap 1C according to the fourth embodiment is inverted, that is, between the cap main body 7 and the holder portion 15, The disc-shaped bottom wall portion 17a of the valve body 17 is held so as to face the bottom plate 11b of the bottomed tubular portion 11a at the lower portion of the discharge nozzle 11 . With this arrangement, the discharge valve portion 57 of the valve body 17 abuts on the bottom surface of the holder portion 15 on a circle having a radius P3 from the center O of the holder portion 15 (see the dashed line in FIG. 19A). The contact portion functions as a valve seat. The intake valve portion 59 of the valve body 17 contacts the lower surface of the bottom plate 11b of the bottomed cylindrical portion 11a of the discharge nozzle 11, and this lower surface functions as a valve seat.

The flow path 55D of the valve body 17 and the flow path 48 (that is, the discharge side flow path) between the outer peripheral surface of the discharge valve portion 57 and the cylindrical inner wall portion 23 of the cap main body 7 are the discharge flow path of the discharge nozzle 11. 29C and the communicating hole 51D of the holder portion 15 so as not to overlap in the axial direction (see axes L1, L2, L3 and L4 in FIG. 18). The area of the flow path 48 between the outer peripheral surface of the discharge valve portion 57 and the cylindrical inner wall portion 23 of the cap body 7 is set larger than the opening area of the communication hole 51D of the bottom wall portion 15b of the holder 15. there is

Next, the action of the cap 1D according to the fifth embodiment of the invention will be described with reference to FIG.
When the contents of the squeeze container 3 are to be discharged, when the internal pressure is applied to the squeeze container 3, the internal pressure causes the contents to flow in through the communication hole 51D and push up the lower surface of the inclined wall portion 17b of the valve body 17. . As a result, the intake valve portion 59 of the valve body 17 presses against the lower surface of the bottom plate 11b of the bottomed tubular portion 11a, and the valve body 17 is elastically deformed. Separated from the bottom surface, the contents pass through the flow path 48 (discharge side flow path) between the outer peripheral surface of the discharge valve portion 57 and the cylindrical inner wall portion 23 of the cap main body 7, and then the lower surface of the ceiling wall 27. After hitting, it is discharged to the outside through the discharge channel 29C of the discharge nozzle 11 (see the arrow in FIG. 21(a)). At this time, the communication hole 51D of the holder 15, which is smaller than the opening area of the discharge inlets 30, 30 of the discharge nozzle 11, limits the discharge amount of the contents in the squeeze container 3, preventing the contents from being vigorously discharged. A predetermined amount can be discharged.

Next, when stopping the discharge of the contents, by stopping the compression of the body of the squeeze container 3, the valve body 17 returns to its original state due to the negative pressure inside the squeeze container 3 and the restoring force of the valve body 17 itself. return to state. The remaining negative pressure further elastically deforms the valve body 17 , causing the intake valve portion 59 to separate from the lower surface of the discharge nozzle 11 . As a result, the flow path from the discharge flow path 29C passing through the outer peripheral side of the valve body 17 to the communication hole 51D of the holder portion 15 is blocked, but the flow path from the discharge flow path 29C passing through the flow path 55D of the valve body 17 to the holder portion 15 is blocked. flow path to the communication hole 51D is generated (see FIG. 21(b)). As a result, the outside air flows through the flow passage 55D (intake-side flow passage) of the valve body 17, through the communication hole 51D of the holder portion 15, and into the squeeze container 3 together with the contents remaining in the discharge passage 29C. (See the arrow in FIG. 21(b)), the content is less likely to remain in the cap 1D and less likely to drip.

According to the cap 1D according to the fifth embodiment of the present invention, the same effects as those of the cap 1 according to the first embodiment described above can be obtained.

Next, a cap 1E according to a sixth embodiment of the invention will be described with reference to FIGS. 22 to 24. FIG. In the following description, the same reference numerals are used for the same parts with respect to the caps 1, 1A, 1B, 1C, and 1D of the first to fifth embodiments, and only different parts will be described in detail. .

The difference between the cap 1E according to the sixth embodiment and the caps 1, 1A, 1B, 1C, and 1D according to the first to fifth embodiments is that the cap body 7 is attached to the upper portion of the holder portion 15 and The method of attachment to the squeeze container is different, and other structures are the same as any of the components of the caps 1, 1A, 1B, 1C, and 1D of the first to fifth embodiments.
Specifically, the attachment between the cap 1E and the squeeze container 3 is performed by using a male thread 24 formed on the outer peripheral surface of the mouth portion 5 of the squeeze container 3 and a female thread 26 formed on the inner peripheral surface of the cylindrical outer wall portion 21. The cap 1E is attached to the squeeze container 3 by screwing the .

Referring to FIG. 22, cap main body 7 is formed separately from cylindrical outer wall portion 21 integrally connected to lid body 13, and includes cylindrical inner wall portion 23 and an upper portion of cylindrical inner wall portion 23. , an inclined wall 28 forming a conical recess, and a discharge nozzle 11 integrally projecting upward from the inclined wall 28 . The cylindrical inner wall portion 23 has an inner peripheral surface formed with an annular discharge portion 34 that engages with an annular concave portion 36 of a first inner peripheral wall portion 15a of the holder portion 15, which will be described later. By attaching the cap body 7 to the holder part 15, the upper part of the cylindrical outer wall part 21 is covered with the ceiling wall 27 of the cap body 7, and the valve body 17 is held between the cap body 7 and the holder part 15. A space 32 is formed.

22 and 23, the holder portion 15 is formed integrally with the substantially central inner peripheral surface of the cylindrical outer wall portion 21, and has a communication hole 51E communicating with the squeeze container 3 and the cylindrical outer wall portion 21. A first inner peripheral wall portion 15a provided concentrically inside the holder portion 15 and protruding from the bottom surface of the holder portion 15, and a second inner peripheral wall hanging from the lower surface of the holder portion 15 inside the first inner peripheral wall portion 15a 15b. The first inner peripheral wall portion 15a has an annular recess 36 formed on its outer peripheral surface, and a plurality of centerings 45 formed on its inner peripheral surface. A first space 41 for inserting the mouth portion 5 of the squeeze container 3 is provided between the cylindrical outer wall portion 21 and the second inner peripheral wall portion 15b. A second space 47 for inserting the cylindrical inner wall portion 23 of the cap body 7 is formed between the cylindrical outer wall portion 21 and the first inner peripheral wall portion 15a. The second inner peripheral wall portion 15b has a tapered outer peripheral portion at the tip thereof in order to facilitate the insertion of the squeeze container 3 into the first space 41. As shown in FIG.

The action of the cap 1E (see FIG. 24) according to the sixth embodiment of the present invention is the same as the action of the cap 1D (see FIG. 21) according to the fifth embodiment. Therefore, the cap 1E according to the sixth embodiment has the same effect as the cap 1 according to the first embodiment.

In addition, in the caps 1, 1A, 1B, and 1E according to the first to third and sixth embodiments of the present invention, the cap body 7 and the lid body 13 are integrally provided via the hinge portion 31. As in the caps 1C and 1D according to the fourth and fifth embodiments of the present invention, the cap main body and the lid may be separated. Also in the caps 1C and 1D according to the fourth and fifth embodiments, the cap body and the lid body may be integrally provided via the hinge portion.

In addition, in the caps 1, 1A, and 1B according to the first to third embodiments of the present invention, the distal ends of the discharge valve portion 57 and the intake valve portion 59 of the valve body 17 are hemispherical in cross section. , a spherical shape, a square shape, or other shapes. The distal ends of the discharge valve portion 57 and the intake valve portion 59 of the valve body 17 of the caps 1C, 1D, and 1E according to the fourth to sixth embodiments may have other shapes such as hemispherical, spherical, and rectangular shapes. .

Furthermore, in the cap 1 according to the first embodiment of the present invention, the diameter φ1 of the discharge passage 29 is set to 4 mm, the diameter φ2 of the communication hole 51 is set to 2.5 mm, and the diameter φ3 of the flow passage 55 is set to 3 mm. is set to However, if the opening area of the flow path 55 is smaller than the opening area of the discharge flow path 29 and the discharge flow path 29 and the flow path 55 are provided at a position where they do not overlap in the axial direction, the viscosity of the contents can be adjusted. , the respective diameters may be changed as appropriate. For example, the diameter φ1 of the discharge channel 29 is set in the range of about 2 mm to about 8 mm, the diameter φ2 of the communication hole 51 is set in the range of about 1 mm to about 7 mm, and the diameter φ3 of the flow channel 55 is set to about 1 mm. to about 7 mm. Also, the communication hole 51 may be provided at one location.

In addition, in the caps 1, 1A, 1B, 1C, 1D, and 1E according to the first to sixth embodiments of the present invention, in the above-described examples, contents with a slightly high viscosity (for example, soy sauce, cooking oil, etc.) are assumed. However, when using low-viscosity contents such as ponzu sauce and lotion, in the caps 1 and 1C of the present invention, the opening area or the total area of the communication holes 51 and 51C of the holder 15 is adjusted. It may be set smaller than the area of the openings of the flow passages 55 and 55C of the body 17 or the total area. In this case, the flow rate of the contents is first regulated by the communication holes 51 and 51C, and then the contents are passed through the flow paths 55 and 55C and the discharge paths 29 and 29C whose opening areas are set to be gradually increased. flow is weakened step by step, and the momentum to be discharged to the outside can also be weakened. As a result, even a low-viscosity content can be discharged in an appropriate amount to the discharge location.

In addition, in the caps 1, 1A, 1B, 1C, 1D, and 1E according to the first to sixth embodiments of the present invention, the communicating holes 51, 51A, 51B, 51C, 51D, and 51E are circular in plan view. However, other shapes such as oval, square, etc. may be formed, and the position and number of communicating holes may be changed as appropriate, and the number of communicating holes may be single. A single communicating hole is provided, and the radial center of the communicating hole is arranged coaxially with the radial center of the holder portion, or is arranged eccentrically on the side where the container is inclined with respect to the radial center of the holder portion. Thus, when the remaining amount of the contents in the squeeze container 3 is low, mixing (foaming) of the contents with air can be prevented.

In the cap 1</b>C according to the fourth embodiment, the valve body 17 may be reversed and arranged between the cap main body 7 and the holder portion 15 as in the fifth embodiment. Specifically, the slanted wall portion 17b of the valve body 17 extends obliquely downward radially outward from the outer edge lower portion of the disk-shaped bottom wall portion 17a. The disk-shaped bottom wall portion 17a of the valve body 17 is provided with an intake valve portion 59 (valve portion) surrounding the flow passage 55C on its upper surface. A discharge valve portion 57 (valve portion) surrounding the plurality of communication holes 51C of the holder portion 15 is provided at the outer peripheral lower edge portion of the oblique wall portion 17b. As a result, the same effect as that of the cap 1A according to the second embodiment is obtained.

In the caps 1, 1A, 1B, 1C, and 1D according to the first to fifth embodiments of the present invention, the caps 1, 1A, 1B, 1C, and 1D are fitted to the mouth portion 5 of the squeeze container 3. , a screw fastening method may be used as in the case of the cap 1E according to the sixth embodiment. Also, the cap 1</b>E according to the sixth embodiment may be fitted to the mouth portion 5 of the squeeze container 3 .

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C, 1D... Cap, 3... Squeeze container, 5... Mouth part, 7... Cap body, 11, 11C... Discharge nozzle, 15... Holder part, 17... Valve body, 21... Cylindrical outer wall Part 27 Ceiling wall 29, 29C Discharge channel 32 Space 48 Channel 51, 51A, 51B, 51C, 51D Communication hole 55, 55A, 55B, 55C, 55D Flow channel 57... Discharge valve portion (valve portion), 59... Intake valve portion (valve portion)

Claims (7)

A synthetic resin cap fitted to the mouth of the container,
a cylindrical outer wall portion having a ceiling wall at the top;
a discharge nozzle projecting from the upper surface of the ceiling wall and having a discharge flow path penetrating the ceiling wall;
a holder portion provided on the lower surface of the ceiling wall and having a communication hole communicating with the container;
a valve body held in the space between the ceiling wall and the holder portion and arranged so as to always block the communication between the discharge passage of the discharge nozzle and the communication hole of the holder portion;
The valve body includes a disk-shaped bottom wall portion having a flow passage in the center, an inclined wall portion extending radially outward from the outer peripheral edge of the disk-shaped bottom wall portion, and the disk-shaped bottom. a valve portion provided so as to surround the flow passage of the wall portion; and a valve portion provided on the outer peripheral edge of the inclined wall portion,
Each valve portion of the valve body is arranged to be seated on either one of the ceiling wall or the holder portion,
A cap, wherein the discharge passage of the discharge nozzle and the flow passage of the valve body are provided so as not to overlap in an axial direction. 2. The cap according to claim 1, wherein the valve body held in the space between the ceiling wall and the holder part includes a valve part provided so as to surround the flow path of the disk-shaped bottom wall part. A cap that is seated on the bottom surface of the holder portion, and has a valve portion provided on the outer peripheral edge of the inclined wall portion so as to be seated on the ceiling wall. 2. The cap according to claim 1, wherein the valve body held in the space between the ceiling wall and the holder part includes a valve part provided so as to surround the flow path of the disk-shaped bottom wall part. A cap that is seated on a ceiling wall and has a valve portion provided on the outer peripheral edge of the inclined wall portion so as to be seated on the bottom surface of the holder portion. 3. The cap according to claim 2, wherein the opening area of the flow path of the disk-shaped bottom wall portion is formed smaller than the opening area of the discharge flow path of the discharge nozzle. 4. The cap according to claim 3, wherein an opening area of said communication hole of said holder portion is formed to be smaller than an opening area of said discharge passage of said discharge nozzle. 6. The cap according to claim 1, wherein said flow passage of said valve body and said communication hole of said holder portion are provided so as not to overlap in the axial direction. 7. The cap according to claim 1, wherein the holder has a single communication hole,
The radial center of the communication hole is arranged coaxially with the radial center of the holder portion, or arranged eccentrically with respect to the radial center of the holder portion on the side on which the container is inclined. and cap.

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