JP5897355B2 - Cap with slit valve - Google Patents

Description

  The present invention includes a cap main body in which a slit valve is provided in a base attached to a mouth tube portion of a container, and a lid body that has a convex portion that presses the slit valve and is detachably fixed to the base. The present invention relates to a cap with a slit valve.

  When the slit valve is used to pour the content liquid and seal the inside of the container by opening and closing the slit, it may be difficult to open and close smoothly if the slit is in close contact with the long-term use. For this reason, the applicant has already proposed a technique for preventing the close contact of the slits by providing a convex portion in contact with the slit valve inside the lid (see, for example, “Patent Document 1”).

  On the other hand, as means for ensuring the sealing performance of the container itself and ensuring its unused state, a means for heat-sealing a sealing piece on the mouth tube portion of the container is known (for example, “Patent Document 2”). (See [0025]).

Japanese Patent No. 3523021 JP 2008-74468 A

  However, by attaching a seal piece to the mouth tube portion of the container to prevent the adhesion of the slit valve and guaranteeing the unused state, once the cap is removed and the seal piece is removed, the cap is again placed in the container. It is necessary to attach to. For this reason, in the conventional technique, the work from the unused state to the usable state is complicated and there is room for improvement.

  The object of the present invention is to provide a novel cap with a slit valve that can guarantee the unused state while preventing the close contact of the slit valve, and can be used without removing the cap from the container. It is to provide.

The present invention includes a cap body in which a slit valve is provided in a base attached to a mouth tube portion of a container, a lid body that has a bulging portion that presses the slit valve and is detachably fixed to the base. A cap with a slit valve comprising:
The base is provided with a sheet member that contacts the bulging portion and deforms into a shape that follows the surface of the slit valve when the lid is closed.

  Examples of the sheet member include those that reverse to a shape that follows the surface of the slit valve and those that have elasticity.

  The seat member can be detachably bonded to a peripheral portion of an opening that surrounds a slit valve provided in the base.

  According to the present invention, a sheet member that contacts the bulging portion of the base provided with the slit valve and deforms into a shape following the surface of the slit valve when the lid is closed is provided. Adhesion can be prevented and the sealing property when not in use can be improved.

  Moreover, when the lid is removed, the sheet member is provided on the base, so that the unused state can be confirmed without removing the cap body from the container. In addition, when starting to use, the container can be used only by removing the sheet member from the base without removing the cap body from the container.

  Therefore, according to the present invention, it is possible to guarantee the unused state while preventing the close contact of the slit valve, and it is possible to make it usable without removing the cap body from the container.

It is principal part sectional drawing which shows one Embodiment of the cap with a slit valve of this invention. In the same embodiment, it is principal part sectional drawing which shows the state which removed the cover body.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  In FIG. 1, the code | symbol 1 is a synthetic resin container which has the opening cylinder part 1a and is filled as a content liquid. The body portion is integrally connected to the mouth tube portion 1a via the shoulder portion 1b. At the upper end 1e of the mouth tube portion 1a, an opening A1 leading to the content liquid filling space S1 is formed.

  Reference numeral C denotes a cap with a slit valve (hereinafter referred to as “cap”). Reference numeral C <b> 1 is a cap body constituting the cap C. The cap body C <b> 1 includes a base 2 attached to the mouth tube portion 1 a and a slit valve 3 provided on the base 2.

  The base 2 has a cylindrical body portion 2a that surrounds the slit valve 3, and the slit valve 3 is disposed in an opening A2 formed inside thereof.

  An annular flat portion 2b that expands radially outward is integrally formed at the lower end of the cylindrical portion 2a. The flat part 2b prevents the slit valve 3 from coming off by contacting an annular flat plate part 3a provided on the slit valve 3 from below. The flat portion 2b is integrally provided with a peripheral wall portion 2c surrounding the annular flat plate portion 3a. An annular holding member 4 that holds the slit valve 3 is fixed to the inner peripheral surface of the peripheral wall 2c.

  The holding member 4 has an annular convex portion 4p that fits into an annular concave portion 3n provided on the lower surface of the annular flat plate portion 3a. Further, the holding member 4 is fixed to the peripheral wall portion 2c by a method such as concave and convex fitting, for example.

  Furthermore, an annular shoulder 2d that expands radially outward is integrally formed at the lower end of the peripheral wall 2c. The shoulder 2d is integrally provided with a mounting tube 2e for mounting on the mouth tube portion 1a. The mounting cylinder 2e is fixed to the mouth tube part 1a by a method such as concave-convex fitting. Thereby, the cap main body C1 can be attached to the container 1. In addition, the mounting cylinder 2e can be screwed and can be screwed into the mouth tube portion 1a.

  The shoulder 2d contacts the upper end 1e of the mouth tube 1a and closes the opening A1. In addition, a seal cylinder portion 2f is integrally provided on the shoulder portion 2d. The seal tube portion 2f is fitted to the inner peripheral surface of the mouth tube portion 1a.

  The slit valve 3 is made of a synthetic resin that can be deformed and restored. As for the slit valve 3, the support cylinder part 3b is integrally shape | molded by the inner edge part of the cyclic | annular flat plate part 3a. The support cylinder portion 3b rises integrally from a base end connected to the annular flat plate portion 3a, and forms a hollow portion S2 together with the annular flat plate portion 3a. Moreover, the support cylinder part 3b comprises the inclination cylinder which diameter-reduces as it distances from the annular flat plate part 3a.

  Furthermore, the movable part 3c is integrally provided at the tip of the support cylinder part 3b. The movable portion 3c has a concave shape that closes one end of the hollow portion S2 and curves toward the hollow portion S2 side (the annular flat plate portion 3a side). The movable part 3c can be moved in the vertical direction starting from the support cylinder part 3b. A slit 3s is formed in the movable part 3c. Thereby, the movable part 3c can be opened and closed according to the content liquid passing through the hollow part S2 in the slit valve 3. The slit 3s may have any shape such as a single character shape or a cross shape.

Reference numeral 5 denotes a sheet member attached to the base 2. The sheet member is made of, for example, a stretchable sheet member. Sheet member 5 is removably adhered to the upper edge 2a ₁ of the cylindrical portion 2a. As the sheet member 5, various types such as a single layer film, a laminated film, and an aluminum foil can be adopted.

Reference symbol C2 is a lid that forms the cap C together with the cap body C1. The lid C2 is formed in a top cylinder shape by an exterior cylinder 6 surrounding the shoulder 2d and a top wall 7 provided at the upper end of the exterior cylinder 6. The outer cylinder 6 is seated and positioned on an annular step 2e ₁ formed at the upper end of the mounting cylinder 2e.

  On the other hand, the flat portion 2b is provided with ribs 2r protruding outward in the radial direction. On the other hand, an engagement cylinder 8 is integrally provided on the back surface of the top wall 7. The engaging cylinder 8 is integrally provided with an engaging protrusion 8a that is detachably engaged with the rib 2r. Thereby, the lid body C2 can be detachably fixed to the cap body C1.

  A holding cylinder portion 9 is integrally provided on the back surface of the top wall 7. As shown in FIG. 1, the holding cylinder portion 9 is fitted and held so as to surround the cylindrical portion 2a when the lid C2 is fixed. Thereby, if the cover body C2 is fixed with respect to the cap main body C1, the slit valve 3 can be closed together with the sheet member 5.

  In addition, a bulging portion 7 a is provided on the back surface of the top wall 7. The bulging part 7a presses the movable part 3c when the lid C2 is fixed and the slit valve 3 is closed. At this time, when the seat member 5 is disposed between the bulging portion 7a and the movable portion 3c of the slit valve 3 as in the present embodiment, the movable portion 3c is provided because the seat member 5 has elasticity. Stretched into a shape following the surface of Thereby, the mouth tube part 1a can be sealed together with the slit valve 3 without providing a seal member in the mouth tube part 1a.

  Moreover, if the cover body C2 is removed, for example, the sheet member 5 is restored to the state of covering the opening A2 of the cylindrical body portion 2a due to its stretchability as shown in FIG. For this reason, the user can remove the sheet member 5 from the cylindrical part 2a by picking and pulling the protruding part 5a of the sheet member 5 protruding in an annular shape from the cylindrical part 2a. In addition, you may use the sheet | seat member 5 which does not have a restoring property.

  As described above, according to the cap C with the slit valve according to the present embodiment, the movable portion 3c comes into contact with the bulging portion 7a when the lid body C2 is closed on the base 2 provided with the slit valve 3. By providing the sheet member 5 that extends in a shape that follows the surface of the sheet, it is possible to prevent the slits 3s from sticking to each other and to ensure sealing performance.

  Further, when the lid C2 is removed, the sheet member 5 is provided on the base 2, so that the unused state can be confirmed without removing the cap body C1 from the container 1. In addition, when the use is started, the container 1 can be used only by removing the sheet member 5 from the base 2 without removing the cap body C1 from the container 1.

  Therefore, according to the present embodiment, the unused state can be ensured while preventing the close contact of the slit valve 3, and the cap body C1 can be made usable without being removed from the container 1.

  Moreover, if a sheet member 5 having elasticity is employed as in the present embodiment, it can be applied to slit valves 3 having various shapes regardless of the surface shape of the movable portion 3c. In addition, according to this invention, if the sheet | seat member 5 deform | transforms into the shape which followed the surface of the movable part 3c by contacting with the bulging part 7a, it will be movable part by contact with the bulging part 7a. It may be reversed to a shape following the surface of 3c.

Further, as in the present embodiment, the sheet member 5 is detachably bonded to the peripheral portion of the opening A2 surrounding the slit valve 3 provided in the base 2 (in this embodiment, the upper end edge 2a ₁ of the cylindrical body portion 2a). In this case, the unused state can be reliably guaranteed until the user removes the sheet member 5 by himself / herself. However, according to the present invention, the sheet member 5 may be sandwiched between the cap body C1 and the lid body C2 without being fixed to the base 2, and may be interposed between the cap body C1 and the lid body C2. Good.

  The above description only shows one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, the lid C2 can be integrally connected to the cap body C1 by a hinge or the like.

  The present invention includes a cap body in which a slit valve is provided in a base attached to a mouth tube portion of a container, a lid body that has a bulging portion that presses the slit valve and is detachably fixed to the base. If it is a cap with a slit valve provided, it can be applied to various containers regardless of the components of the content liquid.

DESCRIPTION OF SYMBOLS 1 Container main body 1a Mouth part 2 Base 2a Cylinder part 2a ₁ Upper end edge of ₁ cylinder part 2b Flat part 2c Perimeter wall part 2d Shoulder part 2e Installation cylinder 2e ₁ step part 2f Seal cylinder part 2r Rib 3 Slit valve 3a Annular flat plate part 3b Support cylinder part 3c Movable part 3n Annular recess 3s Slit 4 Holding member 4p Annular protrusion 5 Sheet member 5a Overhang part 6 Exterior cylinder 7 Top wall 7a Swelling part 8 Engagement cylinder 8a Engagement protrusion 9 Holding cylinder part C Slit valve Cap C1 Cap body C2 Lid S1 Filling space S2 Hollow part

Claims (3)

A slit valve provided with a cap body provided with a slit valve in a base attached to a mouth tube portion of a container, and a lid body that has a bulging portion that presses the slit valve and is detachably fixed to the base. With cap,
A cap with a slit valve, wherein the base member is provided with a sheet member that contacts the bulging portion when the lid is closed and deforms into a shape following the surface of the slit valve.   The cap with a slit valve according to claim 1, wherein the sheet member has elasticity.   3. The cap with a slit valve according to claim 1, wherein the seat member is detachably bonded to a peripheral portion of an opening surrounding the slit valve provided on the base.

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