JP6809883B2 - Discharge cap - Google Patents

Description

The present invention relates to a discharge cap that is fitted to the container mouth and discharges the contents contained in the container.

Conventionally, as a discharge cap for discharging liquid contents or viscous fluid contents contained in a container, a discharge cap in which a check valve is provided between the inside of the container and a discharge port is known. In this discharge cap, when the contents are discharged from the container, the contents pressurized from the outside of the container separate the check valve from the valve seat, so that the contents pass from the inside of the container to the discharge port and are discharged. At the same time, by releasing the pressure on the contents, the check valve adheres to the valve seat and seals the container, so that the inside of the container can be shut off from the outside air, and the contents remaining inside the container are dried and oxidized. It is possible to prevent deterioration such as.

Further, the discharge cap known in Patent Document 1 and the like has a flexible inner container for accommodating the contents and an elastic outer container containing the inner container, and is between the inner container and the outer container. A container equipped with a suction valve capable of sucking outside air is used, and the volume inside the external container, which has decreased due to the discharge of the contents, can be restored by sucking outside air from the suction valve, so the appearance of the container The contents can be discharged with the same feeling of use until the end without changing the shape.
However, in the discharge cap of Patent Document 1, since the check valve operates after the contents are discharged to seal the internal container, the contents may remain in the space from the discharge port to the check valve. It was.

Further, Patent Document 2 also proposes a discharge cap having an improved airtightness inside the container. This discharge cap has a shallow groove formed in the valve seat, and even if the check valve operates after discharging the contents, a minute gap remains between the check valve and the valve seat.
At this time, since the inside of the outer container is in a negative pressure state while the shape of the outer container is restored, it remains in the space from the discharge port to the check valve until the outside air is sucked from the suction valve. The contents are sucked and collected in the inner container through a minute gap between the check valve and the valve seat. Furthermore, since the minute gap between the check valve and the valve seat is sufficiently thin, a part of the residual liquid sucked into the internal container stays in the gap between the check valve and the valve seat due to surface tension. It is possible to prevent the ingress of outside air into the inner container.

JP 2013-241197 Japanese Unexamined Patent Publication No. 2016-37290

However, there is still room for improvement in the discharge cap of Patent Document 2. That is, when a shallow groove is provided on the contact surface between the check valve and the valve seat to form a minute gap through which the contents can pass, and the position of the check valve in contact with the valve seat is displaced. , The size of the gap is liable to change, for example, the gap becomes too small to collect the contents sufficiently inside the container, or the gap becomes too large and the check valve does not operate reliably, and inside the container. There is a problem that air or foreign matter may be mixed in and the contents may be deteriorated.
In addition, since the groove clogged with foreign matter or the like does not function as a collection flow path, there is a problem that the contents cannot be sufficiently collected by the content collection capacity of other collection channels that are not clogged. It was.

The present invention solves these problems, and with a simple configuration, stably secures a flow path for collecting the contents, and removes the contents remaining in the space from the discharge port to the flow control valve. It is an object of the present invention to provide a discharge cap that can be sufficiently collected inside the container, the collection flow path is suppressed from being clogged, the collection capacity of the contents is not deteriorated, and the flow control valve can be operated reliably. Is to be.

The discharge cap of the present invention is a discharge cap that is fitted to the container mouth and discharges the contents contained in the container, and the discharge cap is a fitting portion that fits with the container mouth and a container. It has a discharge port for discharging the contents contained therein, and further has a valve chamber partitioned between the inside of the container and the discharge port, and the valve chamber communicates with the inside of the container and contains the contents. A bottom having a supply hole and a valve seat, and a flow rate control valve are provided, and the flow rate control valve is slidably provided along the axial direction of the supply hole and is urged in the valve seat direction. A rough surface machined portion is provided on at least one surface of the contact surface between the flow rate control valve and the valve seat so that the valve seat can be contacted with the valve seat. when said flow control valve and the valve seat is in contact to form a recovery flow path for communicating the container and the inside of the valve chamber, the rough surface processing unit is configured to have a blast surface having fine irregularities Thereby, the above-mentioned problem is solved.

According to the discharge cap according to claim 1, a rough surface machined portion is provided on at least one surface of the contact surface between the flow rate control valve and the valve seat, and the rough surface machined portion is a flow control valve . Since a recovery flow path that communicates between the valve chamber and the inside of the container is formed when the valve seat comes into contact with the valve seat, the contents in the valve chamber can be quickly recovered to the inside of the container via the recovery flow path. Even if the positional relationship between the flow control valve and the valve seat is misaligned and abuts, if the roughened surface is abutted, the recovery flow path of the contents can be stably secured.
In addition, since a wide recovery flow path is formed in the roughened surface machined portion, it is possible to prevent foreign matter and the like from clogging the flow path, the recovery ability of the contents does not deteriorate, and the flow control valve can be operated reliably. It becomes.
Further, since the rough surface processed portion has a blast surface having fine irregularities, the recovery flow path is the entire body excluding the convex portion of the blast surface, and a wider recovery flow path can be formed, and the recovery on the valve chamber side can be formed. The contents can be evenly collected from the entire surface of the flow path forming portion, and a fine flow path in which the contents can easily stay is formed in the recovery flow path, so that foreign matter and air can be prevented from flowing into the container.

According to the configuration according to claim 2, since the surface roughness of the blast surface of the rough surface processed portion (arithmetic mean roughness Ra defined in JIS B0601) is 50 to 100 μm, the contents in the valve chamber. It is possible to further prevent the inflow of foreign matter and air into the recovery flow path and the container without suppressing the amount of recovery.
According to the configuration according to claim 3, a rough surface machined portion is provided on at least one surface of the contact surface between the flow rate control valve and the valve seat, and the rough surface machined portion is a flow control valve. Since a recovery flow path that communicates between the valve chamber and the inside of the container is formed when the valve seat comes into contact with the valve seat, the contents in the valve chamber can be quickly recovered to the inside of the container via the recovery flow path. Even if the positional relationship between the flow control valve and the valve seat is misaligned and in contact with each other, if the rough surface machined portion is in contact, the recovery flow path of the contents can be stably secured.
In addition, since a wide recovery flow path is formed in the roughened surface machined portion, it is possible to prevent foreign matter and the like from clogging the flow path, the recovery ability of the contents does not deteriorate, and the flow control valve can be operated reliably. It becomes.
Further, since the rough surface processed portion is formed of a plurality of fine grooves, it is difficult for foreign matter to enter the recovery flow path, and the contents are likely to stay in the recovery flow path, so that foreign matter and air in the container are easily retained. The inflow can be prevented.

According to the configuration according to claim 4, since the fine groove intersects with at least one other fine groove, even if foreign matter or the like enters the fine groove to block the inflow of the contents, foreign matter enters. The contents can be collected by dispersing or bypassing other small grooves where the fine grooves intersect.
According to the configuration according to claim 5, since a rough surface machined portion is provided on the entire circumference of at least one surface of the contact surface between the inflow control valve and the valve seat, the entire supply hole is provided. The contents in the valve chamber can be recovered more quickly into the container through the wide recovery flow path formed over the circumference, and the clogging of the flow path due to foreign matter or the like can be further suppressed, and the content recovery ability is improved. It becomes less likely to decline, and the flow control valve can be operated more reliably.

According to the sixth aspect, since the bottom portion of the valve chamber has an inclination toward the supply hole, the contents of the valve chamber can be quickly collected toward the supply hole side.
According to the configuration according to claim 7, since the rough surface processing portion is provided on at least one of the entire valve chamber surface and the entire flow control valve surface, the recovery flow path can be secured wider and more stably. It is possible to prevent clogging of the collection flow path due to foreign matter.

According to the eighth aspect of the present invention, the discharge cap has an upper lid that fits into the cap body, and the upper lid is provided with a blocking plug that closes the discharge port, so that the upper lid is fitted into the cap body. By matching, it is possible to prevent the contents from leaking from the discharge port and prevent outside air from flowing into the valve chamber from the discharge port.
In addition, since the block plug presses the flow control valve when the upper lid is closed, the flow control valve can further block the supply hole and prevent the contents from leaking from the inside of the container except during discharge. Can be done.

According to the configuration according to claim 9, the container has a flexible inner container for accommodating the contents and an outer container containing the inner container, and the outer container includes an inner container and an outer container. Since a suction valve that can suck in the outside air is provided between the two, pressing the outer container to increase the pressure inside the inner container and discharging the contents, and then releasing the pressing of the outer container will release the contents. Since the volume inside the outer container, which has decreased with this, can be compensated by sucking the outside air from the suction valve and only the outer container can be restored, the contents are discharged with the same usability until the end without changing the appearance shape of the container. be able to. In addition, since the inside of the outer container is in a negative pressure state while the outer container is restoring its shape, the contents remaining in the valve chamber are collected from the recovery flow path until the suction valve finishes sucking the outside air. It is sucked into the inner container and the contents can be sufficiently recovered.

FIG. 5 is a cross-sectional view of the discharge cap 100 according to the embodiment of the present invention in a fitted state with the container 200. A cross-sectional view and an enlarged view of part A of the discharge cap 100 according to the embodiment of the present invention. The front view and the side view of the flow rate control valve 132 and the inner plug 131 which concerns on one Embodiment of this invention. A cross-sectional view and an enlarged view of a part A showing a state at the time of discharging the discharge cap 100 according to the embodiment of the present invention. A cross-sectional view and an enlarged view of part A showing a state at the time of collecting the contents P of the discharge cap 100 according to the embodiment of the present invention. FIG. 5 is a cross-sectional view showing a state in which the upper lid 120 of the discharge cap 100 according to the embodiment of the present invention is closed.

The discharge cap 100 according to the embodiment of the present invention will be described below with reference to the drawings. The container 200 fitted to the discharge cap 100 is shown only around the container mouth 201.
The discharge cap 100 is fitted in the container mouth 201 of the container 200 and discharges the contents P contained in the container 200. As shown in FIGS. 1 to 3, the cap body 110 and the upper lid 120 and a valve chamber 130 are provided.

The cap main body 110 includes a main body top surface 111, a fitting portion 112 that hangs downward from the main body top surface 111, a discharge cylinder 113 having a discharge port 113a, and an inner side of the fitting portion 112 and downward from the main body top surface 111. It has a locking portion 114 that hangs down in a ring shape, and a skirt wall 115 that hangs down from the peripheral edge of the top surface 111 of the main body.
The fitting portion 112 and the skirt wall 115 are fitting portions with the container mouth portion 201, and the cap body 110 and the container 200 are engaged with each other so as to be provided above the inner peripheral surface of the fitting portion 112 and the skirt wall 115. The container mouth portion 201 was fitted by inserting the container mouth portion 201 into the portion 117, and the locking ridge 202 of the container mouth portion 201 got over the locking rib 116 provided below the inner peripheral surface of the skirt wall 115. The positional relationship between the discharge cap 100 and the container 200 is fixed at the position.

The upper lid 120 is hinged to the cap body 110, and has an upper lid top surface 121 and an obstruction plug 122 hanging from the upper lid top surface 121.

The inner plug 131 is formed from an annular bottom portion 133 having a supply hole 135 communicating with the inside of the container 200 in the center, an engaging wall portion 137 extending upward from the outer edge portion of the bottom portion 133, and an inner edge portion of the bottom portion 133. It has an annular tubular portion 138 that extends downward.
Further, a ridge 137a projecting outward is formed at the upper end of the engaging wall portion 137.
A valve seat 134 that comes into contact with the valve seal surface 139a of the valve portion 139, which will be described later, is formed in the arc-shaped connection region from the upper surface of the bottom portion 133 to the inner surface of the tubular portion 138, and the surface of the valve seat 134 has a fine uneven blast surface. The rough surface processing portion 136 formed by is provided.

The flow control valve 132, which is formed of a relatively soft synthetic resin such as elastomer or low-density polyethylene, has a substantially disk-shaped valve portion 139 located below and a ring-shaped valve portion 139 located above. It has a base 140 and a connecting piece 141 connecting the valve portion 139 and the base 140. The upper surface of the valve portion 139 bulges upward, and the upper surface and the lower surface have an arcuate cross-sectional shape slightly bulging upward.
Further, an inverted truncated cone-shaped valve sealing surface 139a that inclines downward in the radial direction is formed at the lower end of the outer peripheral surface of the valve portion 139.
The connection piece 141 is a strip-shaped member arranged three at equal intervals in the circumferential direction. Therefore, a downward restoring force due to the elastic force of the connecting piece 141 is constantly applied to the valve portion 139.

The valve chamber 130 is provided on the lower surface side of the main body top surface 111, and is formed as a space partitioned by the main body top surface 111 and the inner plug 131.
In the valve chamber 130, the valve portion 139 of the flow control valve 132 urged downward is provided so as to abut the valve seat 134 formed around the supply hole 135 of the bottom portion 133. When the valve seal surface 139a of 139 comes into contact with the roughened surface processed portion 136 of the valve seat 134, a recovery flow path 142 is formed between the valve portion 139 and the valve seat 134.
Further, referring to FIG. 3, the bottom portion 133 is provided so as to incline downward in the radial direction. As a result, the contents P in the valve chamber 130 can be quickly recovered to the supply hole 135 side.

The container 200 has a flexible inner container (not shown) for accommodating the content P and an elastic outer container (not shown) inside the inner container (not shown), and the inner container (not shown). A suction valve (not shown) capable of sucking outside air is provided between the external container (not shown) and the external container (not shown), and the volume inside the external container (not shown) reduced with the discharge of the content P is reduced. , It is restored by sucking outside air from a suction valve (not shown).

Next, the discharge of the content P and the recovery operation of the content P remaining in the valve chamber 130 into the container 200 by the discharge cap 100 in the present embodiment will be described with reference to FIGS. 4 to 6.
First, the discharge procedure of the content P will be described. When the container 200 is pressed from the outside, the container 200 is deformed, and the pressurized content P pushes up the valve portion 139 of the flow control valve 132 urged to the valve seat 134 from the supply hole 135, and the valve portion 139. Passes between the valve sealing surface 139a and the valve seat 134, and flows into the valve chamber 130.
Further, when the pressing on the container 200 is continued, the content P is discharged to the outside of the discharge cap 100 through the discharge port 113a.

Next, the operation of collecting the contents P in the valve chamber 130 into the container 200 will be described. Contents discharge P, together with stops by pressure to the contents of P in the container 200 is released, because also eliminates the force pushing up the valve portion 139 of the flow control valve 132, supply hole 135 of the flow control valve 132 It is closed by the valve portion 139.
The content P in the valve chamber 130 vigorously returns from the supply hole 135 into the container 200 for a short time until the flow control valve 132 is closed, but the entire amount does not return, and even after the closure, the contents P in the valve chamber 130. The content P remains in.

However, the surface of the valve seat 134 is provided with a roughened surface processed portion 136 formed by a blast surface, and even if the valve sealing surface 139a of the valve portion 139 comes into contact with the roughened surface processed portion 136 of the valve seat 134, The entire surface of the rough surface processing portion 136 excluding the convex portion of the blast surface becomes a wide recovery flow path 142, which communicates the valve chamber 130 with the inside of the container 200.
At this time, even if the positional relationship between the flow control valve 132 and the valve seat 134 is slightly misaligned and in contact with each other, as long as the contact surface between the valve seal surface 139a and the rough surface machined portion 136 is sufficiently secured, the contents The recovery flow path 142 of the object P can be stably secured.

Further, by adjusting the pressing force of the flow control valve 132, the rough surface machined portion 136 is surely prevented from being crushed and blocked, and the recovery flow path 142 suitable for recovering the contents P is made more stable. Can be secured.
Further, the external container (not shown) whose pressure is released is made of an elastic body and tries to return to the original shape. Therefore, the inside of the container 200 is temporarily in a negative pressure state, and the fluid outside the container is transferred to the container. A force for sucking into 200 is generated.

As a result, the content P remaining in the valve chamber 130 can be recovered from the recovery flow path 142 into an internal container (not shown). At the same time, in order to suck the outside air from the suction valve (not shown) into the outer container (not shown), after collecting the contents P remaining in the valve chamber 130, the outside air is taken into the inner container from the recovery flow path 142. The shape of the outer container (not shown) and the pressure inside the container 200 are returned to the original state by sufficiently sucking the outside air into the outer container (not shown) before starting to suck the inside (not shown). ..
Further, since the recovery flow path 142 is composed of a finer flow path due to the blast surface, the content P tends to stay in the recovery flow path 142 due to surface tension, and outside air flows into the inner container (not shown). Therefore, it is possible to prevent deterioration of the content P in the inner container (not shown) and prevent the inflow of foreign matter and air.

Further, by setting the surface roughness of the blast surface (arithmetic mean roughness Ra defined in JIS B0601) to 50 to 100 μm, the recovery flow path without suppressing the recovery amount of the contents P in the valve chamber 130. It is possible to further prevent the inflow of foreign matter and air into the 142 and the container 200.
Further, the rough surface processing portion 136 may be formed of a plurality of fine grooves extending from the valve chamber side toward the supply hole. In that case, the depth of the fine grooves is set to 50 to 100 μm so that the inside of the valve chamber 130 is formed. It is possible to further prevent the inflow of foreign matter and air into the recovery flow path 142 and the container 200 without suppressing the recovery amount of the content P of the above.
Further, when the fine grooves constituting the rough surface processing portion 136 are configured to intersect with at least one other fine groove, even if foreign matter or the like enters the fine groove to block the inflow of the content P, the foreign matter is blocked. The contents P can be collected by dispersing or bypassing the other small grooves in which the small grooves containing the above are intersecting.

When the upper lid 120 is closed after the external container (not shown) is restored, the obstruction plug 122 provided on the upper lid 120 is inserted into the discharge port 113a of the discharge cylinder 113, and the valve chamber 130 is shut off from the outside air. Further, since the flow rate control valve 132 seals the supply hole 135 other than the recovery flow path 142, the outside air in the valve chamber 130 only comes into contact with the content P in the recovery flow path 142, and the internal container (not shown). ) Can suppress the deterioration of the content P. Further, since the block plug 122 is in contact with the flow control valve 132 so as to press the top surface, the supply hole 135 can be tightly sealed and the contents P can be prevented from leaking from the inside of the container except at the time of discharge. ..

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible.
In the above-described embodiment, the container has been described as being composed of a flexible inner container for accommodating the contents and an elastic outer container containing the inner container. The present invention is not limited to this, and for example, it may be configured only by an outer container without using an inner container, or a piston that can move up and down may be provided at the bottom of the container so that the internal volume of the container can be changed. ..
Further, in the above-described embodiment, it has been described that the discharge cap is provided with a hinged upper lid, but the form of the discharge cap is not limited to this, and for example, the cap body may not have an upper lid. It may be provided as a screw cap type upper lid separate from the above.

Further, in the above-described embodiment, the valve chamber has been described as being formed as a space partitioned by the top surface of the main body and the inner plug, but the method of forming the valve chamber is not limited to this, for example. A valve chamber separate from the cap body may be prepared, and the valve chamber may be fitted at a predetermined position on the cap body to form a discharge cap. An inner plug is provided at the tip of the container mouth to form a cap. A valve chamber may be formed by fitting the main body and the container mouth portion.

Further, in the above-described embodiment, the rough surface processed portion has been described as being formed only on the valve seat, but the formed portion of the rough surface processed portion is not limited to this, and is formed only on the valve seal surface, for example. It may be formed on both the valve seal surface and the valve seat.

100 ・ ・ ・ Discharge cap 110 ・ ・ ・ Cap body 111 ・ ・ ・ Main body top surface 112 ・ ・ ・ Fitting part 113 ・ ・ ・ Discharge cylinder 113a ・ ・ ・ Discharge port 114 ・ ・ ・ Locking part 115 ・ ・ ・ Skirt Wall 116 ・ ・ ・ Locking rib 117 ・ ・ ・ Engagement convex part 120 ・ ・ ・ Top lid 121 ・ ・ ・ Top lid top surface 122 ・ ・ ・ Closing plug 130 ・ ・ ・ Valve chamber 131 ・ ・ ・ Inner plug 132 ・ ・ ・Flow control valve 133 ・ ・ ・ Bottom 134 ・ ・ ・ Valve seat 135 ・ ・ ・ Supply hole 136 ・ ・ ・ Rough surface machined part 137 ・ ・ ・ Engagement wall part 137a ・ ・ ・ Protrusion 138 ・ ・ ・ Cylinder part 139 ・・ ・ Valve 139a ・ ・ ・ Valve seal surface 140 ・ ・ ・ Base 141 ・ ・ ・ Connection piece 142 ・ ・ ・ Recovery flow path 200 ・ ・ ・ Container 201 ・ ・ ・ Container mouth 202 ・ ・ ・ Locking protrusion

Claims (9)

A discharge cap that is fitted to the mouth of the container and discharges the contents contained inside the container.
The discharge cap has a fitting portion that fits with the container port portion and a discharge port that discharges the contents contained in the container, and a valve chamber partitioned between the inside of the container and the discharge port. Have more
The valve chamber is provided with a bottom having a supply hole and a valve seat for communicating with the inside of the container and taking out the contents, and a flow rate control valve .
The flow rate control valve is slidably provided along the axial direction of the supply hole, and is urged in the valve seat direction so as to be in contact with the valve seat.
A roughened surface is provided on the surface of at least one of the contact surfaces between the flow control valve and the valve seat.
When the flow rate control valve and the valve seat come into contact with each other, the rough surface processing portion forms a recovery flow path that communicates the valve chamber and the inside of the container .
The roughening processing unit, a discharge cap, characterized in that the chromatic blast surface having fine irregularities. The discharge cap according to claim 1, wherein the surface roughness of the blast surface of the rough surface processed portion (arithmetic mean roughness Ra defined in JIS B0601) is 50 to 100 μm. A discharge cap that is fitted to the mouth of the container and discharges the contents contained inside the container.
The discharge cap has a fitting portion that fits with the container port portion and a discharge port that discharges the contents contained in the container, and a valve chamber partitioned between the inside of the container and the discharge port. Have more
The valve chamber is provided with a bottom having a supply hole and a valve seat for communicating with the inside of the container and taking out the contents, and a flow rate control valve.
The flow rate control valve is slidably provided along the axial direction of the supply hole, and is urged in the valve seat direction so as to be in contact with the valve seat.
A rough surface machined portion is provided on at least one surface of the contact surface between the flow rate control valve and the valve seat.
When the flow rate control valve and the valve seat come into contact with each other, the rough surface processing portion forms a recovery flow path that communicates the valve chamber and the inside of the container.
The rough surface processed portion is a discharge cap characterized by being formed of a plurality of fine grooves. The discharge cap according to claim 3, wherein each of the narrow grooves intersects with at least one other fine groove. Any of claims 1 to 4 , wherein the rough surface processed portion is provided on the entire circumference of at least one surface of the contact surface between the flow rate control valve and the valve seat. discharge cap according to any. The discharge cap according to any one of claims 1 to 5 , wherein the bottom portion of the valve chamber has an inclination toward the supply hole. The roughening processing unit, the discharge cap according to any one of claims 1 to 6, characterized in that provided in at least one of the entire valve chamber surfaces whole or the flow control valve surface. The discharge cap has an upper lid provided with a blocking plug, and the blocking plug is characterized in that when the upper lid is closed, the discharge port is closed and the flow control valve is pressed. The discharge cap according to any one of claims 1 to 7. The container is a container having a flexible inner container for accommodating the contents and an outer container containing the inner container, which is fitted to the discharge cap according to any one of claims 1 to 8. And
The outer container is provided with a suction valve capable of sucking outside air between the inner container and the outer container.

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