JP6404136B2 - Dispensing cap and container having the same - Google Patents

Description

  The present invention relates to a pouring cap for pouring out the contents stored in a container body, and a container having the pouring cap attached to the container body.

  As a pouring cap that is attached to a container body and pours out contents, a cap incorporating a check valve is known (for example, see Patent Document 1). According to such a pouring cap, since the introduction of outside air into the container body can be prevented, the freshness of the contents can be maintained by suppressing the contact between the contents and the air.

JP 2011-31921 A

  By the way, when such a pouring cap is removed from the container body, the contents can be put into the container body, so that the contents may be refilled. In this case, if unscheduled contents are filled or used repeatedly, there is a concern that problems such as the contents being scattered and the storage performance being lowered when being poured out.

  An object of the present invention is to solve such a problem, and an object of the present invention is to provide a pouring cap in which the contents cannot be refilled even if it is removed from the container body.

The present invention has a mounting cylinder that surrounds a mouth portion of a container body, a base in which an outlet for contents contained in the container body is formed on a top wall connected to the mounting cylinder, and the mouth portion A top wall fixed to the top and provided with a through hole, and a check plug that is disposed between the top wall and the top wall and that opens and closes the through hole. With a valve,
The inner plug is possess an annular wall which is held so as not to escape into the base, and a weakened portion which breakable coupling the annular wall and the ceiling wall,
The top wall is a pouring cap that is positioned below the upper end of the mouth when fixed to the mouth .

  The top wall preferably has a peripheral wall that extends along the inner peripheral surface of the mouth portion and is fitted and held in the mouth portion.

  In a container in which such a dispensing cap is mounted on the container body, the container body includes the outer layer body having an outside air introduction hole and the contents provided and accommodated inside the outer layer body. The inner layer body preferably includes an inner layer body that takes in air from the outside air introduction hole and reduces the volume.

  The pouring cap of the present invention includes a base having a mounting cylinder surrounding the mouth portion of the container body, an inner plug having a through hole in the top wall fixed to the upper portion of the mouth portion, and a check valve for opening and closing the through hole The inner plug is provided with an annular wall that is held in the base so as not to be pulled out, and a weakening portion that connects the annular wall and the ceiling wall in a breakable manner. That is, when the dispensing cap is removed from the container main body, the ceiling wall separated from the annular wall by the breakage of the weakened portion remains in the mouth portion, making it difficult to put the contents into the container main body. For this reason, refilling of the contents can be effectively prevented.

  If the top wall protrudes from the mouth, there is a risk that it will be grasped and removed from the container body, but when the top wall is fixed to the mouth, it will be below the upper end of the mouth. Since it will become difficult to remove from the container main body, refilling of the contents can be more reliably prevented.

  When a peripheral wall is provided on the top wall that extends along the inner peripheral surface of the mouth portion and is fitted and held in the mouth portion, it is more firmly fixed at the mouth portion and is more difficult to remove from the container body. Therefore, refilling of the contents can be prevented more reliably.

  As a container main body to which such a pouring cap is attached, air is provided between the outer layer body having the outside air introduction hole and the outer layer body from the outside air introduction hole as the contents provided inside the outer layer body are poured out. By adopting an inner layer body that takes in and reduces the volume, contact between the contents and the outside air can be more reliably prevented.

It is sectional drawing of the side view which shows one Embodiment of the extraction | pouring cap according to this invention. It is a bottom view of the inner stopper shown in FIG. It is sectional drawing in the side view which shows the state which mounted | wore the container main body with the extraction | pouring cap shown in FIG. It is sectional drawing in the side view which shows the state which removed the extraction | pouring cap from the state of FIG.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In FIG. 1, the code | symbol 1 shows one Embodiment of the extraction | pouring cap according to this invention. The dispensing cap 1 of the present embodiment includes a base 2, an inner plug 3, a moving valve body 4, a check valve 5, and a lid body 6.

  The base 2 has a cylindrical shape and includes a mounting cylinder 2a that surrounds a mouth portion of a container body, which will be described later. On the inner surface of the mounting cylinder 2a, there are provided a female screw portion 2b and a protrusion 2c that protrudes radially inward above the female screw portion 2b. The protrusion 2c may be provided annularly around the central axis of the mounting cylinder 2a or may be provided intermittently.

  A top wall 2d is integrally connected to the upper portion of the mounting cylinder 2a. A hole (content outlet) 2e penetrating in the vertical direction is provided at the center of the top wall 2d, and a dispensing cylinder 2f is provided surrounding the outlet 2e. The top portion of the dispensing tube 2f is expanded radially outward to form a lip. Further, a hole (vent hole) 2g is provided on the outer peripheral portion of the top wall 2d. Further, a retaining wall 2h extending downward is provided on the lower surface of the top wall 2d. A plurality of vertical ribs are provided on the outer peripheral surface of the retaining wall 2h at intervals in the circumferential direction.

  An inner plug 3 is attached to the inside of the base 2. The inner plug 3 includes an annular wall 3a extending along the inner surface of the mounting cylinder 2a. In the upper part of the annular wall 3a, a groove portion 3b partially cut away from the annular wall 3a is provided. A minute gap t is partially formed between the outer peripheral surface of the annular wall 3a and the mounting cylinder 2a. The annular wall 3a of the present embodiment is held in a non-rotatable manner with respect to the mounting cylinder 2a, and is retained by the protrusion 2c.

  A ceiling wall 3c is provided on the radially inner side of the annular wall 3a. A through hole 3d is provided at the center of the top wall 3c. Moreover, the cylindrical wall 3e penetrated up and down is provided in the radial direction outer side of the through-hole 3d, and the inclined part 3f which diameter-reduces below is provided in the lower part of the cylindrical wall 3e. Furthermore, the top wall 3c is provided with a cylindrical peripheral wall 3g extending upward at the outer edge thereof. The upper end of the peripheral wall 3g is externally fitted to the retaining wall 2h when the inner plug 3 is attached to the base 2, and the upper end surface of the peripheral wall 3g contacts the lower end surface of the vertical rib provided on the outer surface of the retaining wall 2h. I am doing so. Further, an annular recess 3h that is open upward is provided at the outer edge of the top wall 3c including the space between the cylindrical wall 3e and the peripheral wall 3g.

  The annular wall 3a and the top wall 3c are connected by a weakening portion 3i that connects the wall 3c so as to be breakable. In this embodiment, as shown in FIGS. 1 and 2, a connecting portion 3j extending from the inner peripheral surface of the annular wall 3a while narrowing the height and width toward the inner side in the radial direction is spaced apart in the circumferential direction. The weakened portion 3i is formed by a thin portion connecting between the inner peripheral end of the connecting portion 3j and the upper end of the top wall 3c.

  A movable valve element 4 that is movable in the axial direction of the cylindrical wall 3e is disposed inside the cylindrical wall 3e. The moving valve body 4 of the present embodiment is a spherical body, but various shapes can be applied as long as it matches the shape of the inner peripheral surface of the peripheral wall 3g. In this embodiment, a cylindrical body or an ellipsoid may be used in addition to the spherical body.

  A check valve 5 is provided between the top wall 2d and the top wall 3c. The check valve 5 has an annular base portion 5a, and a disc-like valve body 5c is integrally provided via one or more elastic pieces 5b provided inside the base portion 5a. The check valve 5 of the present embodiment has a so-called three-point valve configuration in which the valve body 5c is held by three elastic pieces 5b. In addition to the three-point valve, a one-point valve, a two-point valve, or the like can be used.

  When the inner plug 3, the movable valve body 4, and the check valve 5 are assembled to the base 2, the check valve 5 is positioned by fitting the base 5a into the recess 3h, and the upper end of the base 5a is prevented from coming off. It comes into contact with the wall 2h and is prevented from coming off. In this state, the outlet 2e and the vent 2g are blocked by the retaining wall 2h. The through hole 3d is closed by the valve body 5c covering the seat 3d being seated on the top wall 3c, while the cylindrical wall 3e is formed by a gap formed between the elastic piece 5b and the valve body 5c. Some are open.

  A lid 6 is provided above the base 2. The lid 6 includes a plate-like upper wall 6a and an outer peripheral wall 6b that is integrally connected to the upper wall 6a and is continuous to the mounting cylinder 2a. The outer peripheral wall 6b is provided with a hinge 6c that is integrally connected to the mounting cylinder 2a. A finger hook 6d that protrudes radially outward is provided at a position facing the hinge 6c. A cylindrical (or columnar) seal portion 6e that enters the dispensing tube 2f is provided on the lower surface of the upper wall 6a. Further, a stopper 6f extending toward the top wall 2d is provided on the radially outer side of the seal portion 6e. The stopper 6f has a function of preventing deformation of the upper wall 6a by contacting the top wall 2d when an excessive pressing force is applied to the upper surface of the upper wall 6a.

  The pouring cap 1 having such a configuration can be attached to, for example, the container body 7 shown in FIG. The container body 7 of the present embodiment is a double container composed of an outer layer body 8 and an inner layer body 9.

  The outer layer body 8 is formed by sequentially connecting a body portion and a bottom portion (not shown) to a cylindrical mouth portion 8a, and has reversible flexibility. On the outer peripheral surface of the mouth portion 8a, a male screw portion 8b adapted to the female screw portion 2b of the base 2 is provided. In addition, a hole (outside air introduction hole) 8c is provided in the mouth portion 8a, and a vertical groove 8d in which a male screw portion 8b is cut in the vertical direction is provided on the outer peripheral surface provided with the outside air introduction hole 8c. .

  The inner layer body 9 is formed in a thin bag shape, and includes a filling space S in which the contents can be filled.

  In order to attach the dispensing cap 1 to the container body 7, the dispensing cap 1 is rotated with respect to the mouth portion 8a. As a result, the female screw portion 2b and the male screw portion 8b are screwed together, and the top wall 3c rotates with respect to the mouth portion 8a, and the retaining wall 2h enters the mouth portion 8a by pushing the peripheral wall 3g. When the fitting between the peripheral wall 3g and the mouth portion 8a is strengthened, the peripheral wall 3g becomes difficult to turn with respect to the mouth portion 8a. On the other hand, since the annular wall 3a held non-rotatably with respect to the mounting cylinder 2a rotates together with the base 2, the annular wall 3a rotates relative to the top wall 3c, and the weakening portion connecting them. 3i breaks. Since the retaining wall 2h pushes in the peripheral wall 3g even after the weakened portion 3i is broken, as shown in FIG. 3, the upper end of the upper peripheral wall 3g of the top wall 3c is made higher than the upper end of the mouth 8a. Can also be positioned below.

  In order to pour out the contents of the filling space S, the lid body 6 is opened, the container body 7 in the upright posture is displaced to the tilted posture, and the body portion of the outer layer body 8 is pressed. As a result, the filling space S is pressurized, and the valve body 5c seated on the top wall 3c is separated from the top wall 3c, and the contents in the filling space S include the through hole 3d, the valve body 5c, the top wall 3c, , The gap between the elastic piece 5b and the valve body 5c, and is discharged from the extraction cylinder 2f through the outlet 2e. At this time, the moving valve body 4 moves to the dispensing cylinder 2f side.

  After the predetermined amount of content has been poured out, the pressure on the outer layer body 8 is released and the container body 7 is returned to the original upright posture. As a result, the pressure in the filling space S decreases, and the valve body 5c closes the through hole 3d, so that the introduction of outside air into the filling space S can be effectively prevented. In addition, since the outer layer body 8 tries to return to its original shape by its own restoring force, the outer layer body 8 and the inner layer body 9 are in a negative pressure state, whereby the groove portion 3b and the gap are formed from the vent 2g. t, through the longitudinal groove 8d, air is introduced between the outer layer body and the inner layer body through the outer air introduction hole 8c, and the outer layer body 8 is restored while the volume of the inner layer body 9 is reduced. At this time, the moving valve body 4 moves to the inclined portion 3f side, and accordingly, the contents in the dispensing cylinder 2f can be drawn into the cylindrical wall 3e side through the gap between the elastic piece 5b and the valve body 5c. Yes (suck back). Thereby, dripping from the dispensing cylinder 2f can be prevented.

  When the pouring cap 1 is rotated in a direction in which the screwing of the female screw portion 2b and the male screw portion 8b is loosened, the pouring cap 1 is removed from the container body 7 as shown in FIG. The wall 3c and the check valve 5 remain. That is, the opening portion in the mouth portion 8a is only a gap formed between the elastic piece 5b located above the cylindrical wall 3e and the valve body 5c, and the movable valve body 4 is below the gap. Since the filling space S is seated on the inclined portion 3f, refilling of the contents can be prevented. And since the upper end of the peripheral wall 3g located in the uppermost part among the top walls 3c is located below the upper end of the mouth part 8a, it is impossible to grasp a part of the top wall 3c and remove it from the mouth part 8a. , Refilling of the contents can be prevented more reliably. In particular, since the peripheral wall 3g is provided on the top wall 3c, the contact area with the mouth portion 8a is widened and more firmly fixed to the mouth portion 8a, so that refilling of the contents can be more reliably prevented. . Even if the valve body 5c seated on the top wall 3c is lifted and the filling of the contents is attempted, refilling through the through hole 3d is difficult, and further, the elastic piece 5b is deformed or broken to function. Refilling is not possible because there is a risk that it will fail.

  The dispensing cap and the container according to the present invention are not limited to this embodiment, and various modifications can be made within the scope according to the claims. For example, in the present embodiment, the dispensing cap 1 is screwed to the container body 7, but it may be mounted by a stopper. In this case, since the top wall 3c and the annular wall 3a do not rotate relative to each other, there is a possibility that the weakened portion 3i is not broken during the mounting as in the above-described embodiment. Therefore, if the dispensing cap 1 is removed from the container body 7, the weakened portion 3i can be broken and the top wall 3c can be left in the mouth portion 8a. Moreover, the outside air introduction hole 8c provided in the outer layer body 8 is not limited to being provided in the mouth portion 8a, and may be provided in the trunk portion or the bottom portion.

1: Discharge cap 2: Base 2a: Mounting tube 2b: Female thread portion 2c: Projection 2d: Top wall 2e: Outlet 2f: Discharge tube 2g: Vent 2h: Retaining wall 3: Inner plug 3a: Annular wall 3b : Groove 3c: top wall 3d: through hole 3e: cylindrical wall 3f: inclined portion 3g: peripheral wall 3h: recess 3i: weakened portion 3j: connecting portion 4: moving valve body 5: check valve 5a: base portion 5b: elastic piece 5c: Valve 6: Lid 6a: Upper wall 6b: Outer wall 6c: Hinge 6d: Finger hook 6e: Seal 6f: Stopper 7: Container body 8: Outer layer 8a: Mouth 8b: Male thread 8c: Introducing outside air Hole 8d: vertical groove 9: inner layer S: filling space t: gap

Claims (3)

A mounting cylinder that surrounds the mouth of the container body. A top wall connected to the mounting cylinder has a base formed with an outlet for the contents stored in the container body, and is fixed to the top of the mouth. And having a top wall provided with a through-hole, an inner plug disposed inside the base, and a check valve disposed between the top wall and the top wall for opening and closing the through-hole. ,
The inner plug is possess an annular wall which is held so as not to escape into the base, and a weakened portion which breakable coupling the annular wall and the ceiling wall,
The top wall is a pouring cap located below the upper end of the mouth when the top is fixed to the mouth . The pouring cap according to claim 1, wherein the top wall has a peripheral wall that extends along an inner peripheral surface of the mouth portion and is fitted and held in the mouth portion. A container having the container main body equipped with the dispensing cap according to claim 1 or 2 , wherein the container main body includes an outer layer body having an outside air introduction hole, and contents stored inside the outer layer body. A container comprising an inner layer body that takes in air between the outer air introduction hole and the outer layer body as it is poured out, and that undergoes volumetric deformation.

Images