JP2007039039A - Container for preventing end leakage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent a liquid from leaking during non-drinking time by making the liquid flow out from the inside only when suction is performed from the outside. <P>SOLUTION: A container is equipped with a container body 12 storing the liquid and having an opening on its upper part, a nozzle 14 having inside a flow path 14a which can be communicating with the inside of the container body 12 and provided above the container body 12, and a valve 18 for performing communication/non-communication between the flow path 14a and the inside of the container body 12. The valve 18 has a curved face part 18a which becomes convex toward the inside of the container body 12 during non-drinking time, and forms a slit 18b on its central part, and during non-drinking time, the slit 18b is closed and the inside of the container body 12 is not communicating with the flow path 14a of the nozzle 14. On the other hand, the curved face part 18a becomes convex to the nozzle 14 side by a suction force from the nozzle 14 side during drinking time, and the slit 18b is opened to make the inside of the container body 12 communicate with the flow path 14a of the nozzle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a leak-proof container.

  Conventional beverage containers are generally composed of a container main body that contains drinking water and a cap that is detachably attached to the opening of the container main body. And when drinking, a cap can be removed from the opening part of a container main body, a mouth can be directly attached to an opening part, or a straw etc. can be inserted in an opening part, and the drinking water in a container main body can be drunk.

  However, since the size of the opening of such a conventional leak-proof container is quite large, there is a problem in that drinking water is spilled or drinking water flows out from the opening when the container body falls down.

  As what solves such a problem, what was described in patent document 1 is known, for example. The beverage container of Patent Document 1 is a drinking container in which the top wall is extended inward from the upper end of the mounting cylinder fitted to the outer periphery of the mouth and neck, and the lower end is opened at the center of the top wall. A stopper body is provided with a nozzle standing upward, and a valve member having a slit formed in a dome-shaped top plate that presses against the inner peripheral surface of the drinking nozzle and protrudes upward.

  In this cited document 1, if the container is tilted with the drinking nozzle and the body part of the container body is squeezed, the slit is opened by the hydraulic pressure, and the drinking water in the container body can be sucked. At this time, the slits are prevented from turning up more than necessary. And if the expression of a trunk | drum is cancelled | released, a slit will be closed.

JP 2001-192051 A

  However, in the conventional beverage container, there is a problem that when the body part is squeezed, the slit opens, so that drinking water is inadvertently leaked, and the slit of the valve member that protrudes toward the nozzle side opens. There is a problem that it is easy.

  The present invention has been made in view of such problems, and provides a leak-proof container that can prevent liquid leakage when it is not ingested, by allowing liquid to flow out from the inside only when suction is performed from the outside. The purpose is to do.

In order to achieve the above object, the invention according to claim 1 of the present invention has a container main body containing liquid therein and having an opening in the upper part, and a flow path capable of communicating with the inside of the container main body. In a leak-proof container comprising a nozzle provided above a container body, and a valve that communicates / disconnects between the flow path and the inside of the container body,
The valve has a curved shape toward the inside of the container body when not drinking, and a slit is formed at the center, and when not drinking, the slit is closed so that the inside of the container body and the flow path of the nozzle are not communicated. On the other hand, the slit is opened by the suction force from the nozzle side at the time of drinking, and the inside of the container body communicates with the flow path of the nozzle.

According to the second aspect of the present invention, there is provided a container main body containing liquid therein and having an opening in the upper part, and a nozzle provided inside the container main body and having a flow path communicable with the inside of the container main body. And a valve that performs communication / non-communication between the flow path and the inside of the container body,
The valve has a curved surface portion that is convex toward the inside of the container body when not drinking and has a slit formed at the center, and when not drinking, the slit is closed and the interior of the container body and the nozzle flow path are not connected. On the other hand, the curved surface portion is convex toward the nozzle side by a suction force from the nozzle side during drinking, and the slit is opened to allow the inside of the container body and the flow path of the nozzle to communicate with each other. .

  According to a third aspect of the present invention, a part of the cross-sectional shape of the slit according to the first or second aspect is V-shaped, and the remaining part is a straight line extending from a V-shaped apex, and the straight line The valve portions facing each other on both sides of the slit are in contact with each other.

  The invention according to claim 4 is characterized in that the outer peripheral surface surrounding the curved surface portion of the valve according to claim 2 or 3 is a wall surface substantially parallel to the flow path.

  According to a fifth aspect of the present invention, in the liquid crystal display device according to any one of the first to fourth aspects, the cover mounted on the container body and the nozzle are provided integrally with the cover via a hinge. A cap that protects the cap, the cap being pivotable about a hinge, and a locking piece extending from the end of the cap opposite to the hinge. It can be locked to a locking step provided in the cover.

  According to a sixth aspect of the present invention, there is provided the cover according to any one of the first to fourth aspects, wherein the nozzle mounted on the container body is provided integrally with the cover via a hinge. And a cap for protecting the cap, wherein the cap includes a ring portion.

  According to the first aspect of the present invention, when the non-drinking valve is used, even if the valve that forms the curved surface does not open the slit in order to maintain the shape and the pressure is applied by the liquid inside the container body, The inside of the main body and the flow path of the nozzle are not in communication so that the liquid does not leak. On the other hand, at the time of drinking, because the shape collapses due to the suction force, the slit opens, and the valve communicates the inside of the container body and the flow path of the nozzle, so that the liquid from the inside of the container body passes through the flow path of the nozzle. You can drink. When drinking, the liquid flows out smoothly because the pressure of the liquid acts in the direction of opening the slit. In this way, liquid leakage is surely prevented when not drinking and can be smoothly drinked when drinking.

  According to the second aspect of the present invention, when not drinking, the curved surface portion convex toward the inside of the container body of the valve does not open the slit in order to maintain its shape, and the pressure due to the liquid inside the container body The valve does not communicate between the inside of the container body and the flow path of the nozzle, so that the liquid does not leak. On the other hand, at the time of drinking, the curved portion becomes convex toward the nozzle side due to the suction force, and the slit is opened because the shape collapses, and the valve communicates the inside of the container body and the flow path of the nozzle. It becomes possible to drink the liquid from the inside through the flow path of the nozzle. When drinking, the liquid flows out smoothly because the pressure of the liquid acts in the direction of opening the slit.

  In this way, liquid leakage is surely prevented when not drinking and can be smoothly drinked when drinking.

  According to the invention of claim 3, the slit can be reliably closed when not drinking, and the slit can be easily opened when drinking.

  According to the invention of claim 4, the wall surface surrounding the curved surface portion of the valve contributes to maintaining the shape of the curved surface portion. There can be no.

  According to the fifth aspect of the present invention, the non-drinking nozzle can be protected by the cap, and the cap can be opened and closed by non-locking / locking to the locking step of the locking piece.

  According to the sixth aspect of the present invention, the ring portion of the cap can be hooked on a finger or other object, and the container can be held suspended.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of an essential part showing a leak-proof container according to the present invention.

  In the figure, a leak-proof container 10 is roughly composed of a container body 12 for storing a liquid used for beverages, a nozzle 14 for a drinker to put a mouth, and a cap 16 for protecting the nozzle 14 when not drinking. And a valve 18 provided inside the nozzle 14.

  The container body 12 is preferably made of a resin such as an elastically deformable PET bottle or a metal such as aluminum, but can be made of any material. The container main body 12 has a neck portion 12a at an upper portion thereof, and the top portion of the neck portion 12a is an opening 12b. A male screw is formed on the outer peripheral surface of the neck portion 12a.

  An upper cover 20 integrated with the nozzle 14 and the cap 16 is attached to the outer peripheral side of the neck portion 12a of the container body 12, and a female screw formed on the inner peripheral surface of the upper cover 20 is a male portion of the neck portion 12a. Screwed into the screw. The upper cover 20 can also be made of any resin such as PET or polypropylene. A cap 16 is integrally formed at one end of the top portion of the upper cover 20 via a hinge 20a. Further, the top portion of the upper cover 20 extends slightly toward the inside of the center. The nozzle 14 is integrally formed upward from the portion. According to this configuration, since the upper cover 20, the cap 16 and the nozzle 14 are integrally formed, the number of parts is small, but it is also possible to use separate parts. The cap 16 includes the nozzle 14 and the upper part. It may be separable from the cover 20.

  The nozzle 14 has a cylindrical shape extending upward, and has a flow path 14a that can communicate with the inside of the container body 12 therein. The outer diameter dimension and height dimension of the cylindrical nozzle 14 are good to be a magnitude | size suitable for a drinker to be able to put on a mouth directly and to be able to hold it. The top end of the nozzle 14 serves as an outlet 14b of the flow path 14a.

  A valve 18 is provided at the base end of the nozzle 14 to communicate / disconnect the flow path 14a of the nozzle 14 and the inside of the container body 12. The valve 18 is made of a flexible material having elasticity such as a thermoplastic elastomer. The outer edge of the valve 18 may be integrally joined to the nozzle 14 by welding or may be fitted into the nozzle 14.

  The valve 18 has a rounded curved surface portion 18a that is downward, that is, convex toward the inside of the container body 12, and a slit 18b is formed at the center of the curved surface portion 18a. ing. The slit 18b can be formed in an arbitrary shape, but preferably, as shown in FIGS. 3 (a) and 3 (b), the slit 18b can be formed in a cross shape or a negative shape as viewed from above, and is particularly preferable. Is to make a cross.

  Moreover, as shown in FIG. 4, the cross-sectional shape of the slit 18b is preferably a part of a V shape, and the remaining part is a straight line extending from the apex of the V shape. The portions on both sides of the slit 18b overlap each other and are in contact with each other. The V-shaped portion of the slit 18b can be formed at the same time as the valve 18 is formed. In addition, the straight portion can be cut in advance, but it can also be cut in the middle not to penetrate vertically or cut in a break so that the cut is completely completed when drinking. In addition, the cut may penetrate up and down only after the suction force is activated during the first drinking.

  Further, the outer peripheral surface surrounding the curved surface portion 18a of the valve 18 is a wall surface 18c substantially parallel to the flow path 14a, and there is a gap between the wall surface 18c and the inner peripheral surface of the neck portion 12a of the container body 12. Is formed.

  The cap 16 can be of any configuration, but in this embodiment, as shown in FIG. 6, a locking piece 16a extends from the end of the cap 16 opposite to the hinge 20a. The locking piece 16a is inserted into a locking hole 20b provided in the upper cover 20, and can be locked to a locking step 20c formed inside the locking hole 20b. Further, a swinging piece 20d that can swing with respect to the main body of the upper cover 20 is preferably formed below the locking step 20c by a notch 20e (see FIG. 2). When the rocking piece 20d is pressed inward or the upper side of the locking piece 16a of the cap 16 is pressed inward, the locking piece 16a is displaced and locked from the locking step portion 20c. , And the cap 16 is rotatable about the hinge 20a, so that the cap 16 is in an open state away from the nozzle 14. When the nozzle 14 is attached again, the cap 16 is rotated about the hinge 20a and the locking piece 16a is inserted into the locking hole 20b. As a result, the cap 16 is closed.

  Moreover, as shown in FIG. 8 or FIG. 9, the ring part 16b can also be provided in the upper part of the cap 16 above the hinge 20a. The ring portion 16b may be a completely closed ring as shown in FIG. 8, or a slit 16c may be provided in part as shown in FIG. By hooking the ring portion 16b on a finger, hook, belt or the like, the leak-proof container 10 can be suspended and held. Further, the ring portion 16b may be provided with a protrusion 16d that serves as a clue when the cap 16 is opened.

  In the leak-proof container 10 configured as described above, when not drinking, the curved surface portion 18a of the valve 18 is convex toward the inside of the container body 12, and the slit 18b is closed to close the flow path 14a. The container body 12 is disconnected from the interior of the container body 12. At this time, the slit 18b is urged so as to be naturally closed by the self-shape maintaining property of the curved surface portion 18a of the bulb 18. Therefore, as shown in FIG. 5 (a), the leak-proof container 10 is inverted so that the opening 12b of the container body 12 faces downward, and the liquid in the container body 12 protrudes from the curved surface portion 18a. Even if it acts from the side, the slit 18b does not open, so that leakage of liquid can be prevented. In particular, the presence of the wall surface 18c increases the self-shape maintainability of the curved surface portion 18a, and the wall surface 18c does not move depending on the hydraulic pressure, so the slit 18b does not open. Furthermore, if the liquid is filled in the portion outside the wall surface 18c between the wall surface 18c of the curved surface portion 18a and the neck portion 12a of the container main body 12, the shape of the curved surface portion 18a is not easily deformed. And the overlap of a part of slit 18b is hold | maintained and closure of the slit 18b is ensured.

  On the other hand, when a drinker holds the nozzle 14 with his mouth and applies a suction force from the concave side of the curved surface portion 18a, the curved surface portion 18a becomes convex toward the nozzle 14 as shown in FIG. 5B, and the curved surface portion 18a. The shape of is collapsed and the slit 18b is opened. For this reason, the inside of the container main body 12 and the flow path 14a of the nozzle 14 communicate with each other, and the liquid from the container main body 12 flows through the flow path 14a of the nozzle 14 into the mouth of the drinker. Once the shape of the curved surface portion 18a collapses and becomes convex toward the nozzle 14, the slit 18b is pushed open by the hydraulic pressure, so that the liquid can flow out smoothly. However, when the suction force is stopped, the curved surface portion 18a returns to its original shape and the slit 18b is closed, so that the supply of liquid is stopped. As described above, since the liquid can pass through the nozzle 14 only by the suction force, the leakage of the liquid can be surely prevented, and the liquid can be smoothly discharged when the suction force is applied.

  When the drinker's suction force is acting, the nozzle 14 side has a negative pressure, so that the liquid flows out from the container body 12. In order to further promote the outflow of the liquid, the flow path 14 a of the nozzle 14 or the container body It is also possible to provide a gas flow hole that communicates with the interior of 12. For example, as shown in FIG. 7, the gas circulation hole 22 may be formed on the base side surface of the nozzle 14 in a portion covered by the cap 16 when the cap 16 protects the nozzle 14.

It is a principal part longitudinal cross-sectional view showing the liquid container of this invention. It is a principal part longitudinal half sectional view of FIG. (A) is a top view of an example of a valve | bulb, (b) is a top view of the other example of a valve | bulb. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. (a) is a principal part longitudinal cross-sectional view when a tip leak prevention container is turned upside down, (b) is a principal part longitudinal cross-sectional view of the liquid container at the time of drinking. It is an expanded sectional view showing the closure structure of a cap. It is a principal part longitudinal cross-sectional view showing the example which has the gas circulation hole of the liquid container of this invention. It is an expanded sectional view showing an example of other caps. It is an expanded sectional view showing an example of other caps.

Explanation of symbols

10 Pre-leakage prevention container 12 Container body 12b Opening 14 Nozzle 14a Flow path
16 Cap 16a Locking piece 18 Valve 18a Curved surface portion 18b Slit 18c Wall surface 20 Upper cover (cover)
20a Hinge 20c Locking step

Claims (6)

A container main body containing liquid therein and having an opening in the upper part; a nozzle provided inside the container main body with a flow path communicating with the inside of the container main body; and the flow path and the inside of the container main body. In a leak-proof container equipped with a valve that communicates and communicates,
The valve has a curved shape toward the inside of the container body when not drinking, and a slit is formed at the center, and when not drinking, the slit is closed so that the inside of the container body and the flow path of the nozzle are not communicated. On the other hand, a leak-proof container characterized in that a slit is opened by a suction force from the nozzle side at the time of drinking and the inside of the container body and the flow path of the nozzle are communicated. A container main body containing liquid therein and having an opening in the upper part; a nozzle provided inside the container main body with a flow path communicating with the inside of the container main body; and the flow path and the inside of the container main body. In a leak-proof container equipped with a valve that communicates and communicates,
The valve has a curved surface portion that is convex toward the inside of the container body when not drinking and has a slit formed at the center, and when not drinking, the slit is closed and the interior of the container body and the nozzle flow path are not connected. On the other hand, the curved surface portion is convex toward the nozzle side by a suction force from the nozzle side during drinking, and the slit is opened to allow the inside of the container body and the flow path of the nozzle to communicate with each other. A leak-proof container.   A part of the cross-sectional shape of the slit is V-shaped, and the remaining part is a straight line extending from the apex of the V-shaped, and the valve parts facing each other on both sides of the slit are formed in the linear part. The leak-proof container according to claim 1 or 2, wherein the containers are in contact with each other.   4. A leak-proof container according to claim 2, wherein an outer peripheral surface surrounding the curved surface portion of the valve is a wall surface substantially parallel to the flow path.   The cover further includes a cover attached to the container body, and a cap that is provided integrally with the cover via a hinge to protect the nozzle, and the cap is rotatable about the hinge. The cap has a locking piece extending from the end opposite to the hinge, and the locking piece can be locked to a locking step provided on the cover. 5. A leak-proof container according to any one of 1 to 4.   The cover further comprising a cover attached to the container body and a cap that is provided integrally with the cover via a hinge to protect the nozzle, and the cap includes a ring portion. 5. A leak-proof container according to any one of 1 to 4.

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