JPH1111502A - Cap of discharge container fitted with slit valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the opening defect of a slit valve, by pressing the peripheral edge of a wall forming an orifice recessed spherically at the surface at closing the cover of a discharge container by the underface of the cap cover to push down the wall forming the orifice and deform the wall face and to open the slit. SOLUTION: A cover is constituted of the top wall and the cylindrical side wall 21. A projection 22 provided with a spherical face 23 engaging with the surface of the wall 38 forming an orifice of a slit valve is extended down at the center of the underface of the top wall. The underface of the top wall of the external side of the projection 22 is made to form a pressing face 24 engaging with the peripheral edge 39 forming the orifice. When closing the cover, the pressing face 24 pushes the peripheral edge 39 of the wall 38 forming the orifice to push the wall 38 and increase the curvature of the surface of the wall to open the slit and at the same time, the spherical face 23 is connected to the periphery 45 of the outside face 41. In this way, the wall 38 forming the orifice is hermetically sealed and the slit 43 is opened and hence, the adjacent cut faces are not mutually blocked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contents discharge container having a slit valve mounted thereon, and more particularly to a cap for a contents discharge container having a slit valve mounted on a mouth portion of the container via a cap.

[0002]

2. Description of the Related Art A slit valve formed of a flexible material having elasticity in a container mouth and having a slit formed in an orifice forming wall of a valve head is mounted, and the slit valve is opened and closed by manually pressing a container body. A discharge container that discharges a predetermined amount of contents has been conventionally known (for example, Japanese Patent Application Laid-Open No. 61-33927,
See JP-A-7-132979).

[0003]

However, in the conventional slit valve, the slit is closed when the discharge container is stored, but when the discharge container is stored for a long period of time, the cut surfaces that come into contact with the slit are blocked. There was a risk that the slit would not open, making the discharge container unusable. In order to solve the above problems, it has been proposed to improve the structure of the slit valve itself.
It cannot be applied to solve the poor opening of the slit valve used conventionally.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a technical object of the present invention is to provide a discharge container equipped with a slit valve having an orifice-forming wall having a spherical concave surface, which is conventionally used. An object of the present invention is to provide a cap of a discharge container in which an opening failure of a slit valve is prevented by a cover.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention presses the peripheral edge of the orifice forming wall having a spherical concave surface by the lower surface of the cap when the discharge container is closed. Then, the orifice forming wall is pushed down to deform the wall and open the slit.

As a specific technical means, in a cap of a discharge container having a slit valve attached thereto, a content discharge container having a slit valve attached to a mouth portion of the container via a cap, wherein the slit valve comprises: The outer surface is a spherical concave portion, and has an orifice forming wall provided with a slit in the center, the cap is provided with a slit base, a cap base screwed to a container mouth portion, and fitted on the cap base. The lid is provided with a pressing surface on its lower surface which engages with the periphery of the orifice forming wall, and engages with the orifice forming wall to open the slit when the lid is closed. Adopt a characteristic configuration.

[0007]

Next, a first embodiment of the present invention will be described with reference to the drawings. In FIG. 1, A is a container, B is a cap, B1 is a cap base, B2 is a cover fitted on the cap base, and C is a slit valve.

[0008] The container A comprises a mouthpiece 1, a body 2 and a bottom 3
And is molded using a flexible synthetic resin as a raw material. A screw 4 for fitting a cap is formed on the outer periphery of the mouthpiece portion 1, and a body portion 2 is formed in a flat elliptical cross section, and a shoulder portion 5 continuous with the mouthpiece portion 1 is provided.
It has a body wall 7 whose opposing flat surface is a pressing surface 6, and the body wall 7 can be deformed and restored according to the pressing operation of the pressing surface 6. As a content of the container A, a household detergent,
Cosmetics, foods and the like are filled in the form of powder, liquid, viscous liquid, viscous fluid.

As shown in FIGS. 2 and 3, the cap B includes a cap base B1 and a cover B2 fitted to the cap base B1, and is formed of a synthetic resin. The cap base B1 includes an upper wall 10 and a side cylinder wall 11, and an engagement cylinder 12 is provided upright at an inner peripheral end of the upper wall 10. A swelling ring 13 is provided on the outer periphery of the upper end of the engagement cylinder 12,
An inclined wall 14 is provided inward from the upper end. Inclined wall 1
A valve holding cylinder 15 is continuously provided at an inner peripheral end of 4, and an upper portion thereof is an engagement ring 16. Valve holding cylinder 15
A protruding ring 17 is provided on the inner periphery of the valve holding cylinder 15.
A locking portion 18 is provided on the outer periphery. A screw 19 that is screwed into the screw 4 of the mouthpiece 1 is engraved on the inner periphery of the side cylinder wall 11.

The cover B2 comprises a top wall 20 and a side cylindrical wall 21. A projection 22 is vertically provided at the center of the lower surface of the top wall 20, and the surface of the projection 22 is a wall for forming an orifice of the slit valve C. Is formed as a spherical surface 23 which engages with the surface. The lower surface of the top wall 20 outside the protruding portion 22 is a pressing surface 24 that engages with the peripheral edge of the orifice forming wall, and a protruding ring 25 that engages with the engaging ring 16 is vertically provided outside the pressing surface 24. The side cylinder wall 21 bulges the upper outer periphery to form a knob,
A swelling ring 26 that engages with the swelling ring 13 at the upper end of the engagement cylinder 12 is provided on the lower inner periphery.

As shown in FIG. 4, the slit valve C is
It comprises a valve base 30 and a valve head 31 and is molded of silicone rubber, an elastomer or a soft synthetic resin. The valve base 30 includes an annular substrate 32, and an inner tube 33 and an outer tube 34 erected from the inner and outer peripheral edges of the substrate 32. In the upper part of the outer periphery of the inner cylinder 33,
An annular engagement groove 35 is engraved, and an upper portion thereof forms a reinforcing ring 36. A bulging ring 37 is provided at the center of the inner periphery of the outer cylinder 34.

The valve head 31 is provided with the orifice forming wall 3.
8 and a holding peripheral wall 4 extending from a peripheral edge 39 of the orifice forming wall 38 and connected to a reinforcing ring 36 at an upper end of the inner cylinder 33.
It consists of 0. The orifice forming wall 38 has its outer surface 41 formed into a spherical surface having a constant radius, and the thickness of the outer surface 41 and the inner surface 42 is substantially constant.

In the center of the orifice forming wall 38, a cross-shaped slit 43 is cut, and four flaps 44 divided by the slit 43 are formed.
The outer surface 41 includes a flap 44 and the flap 44
And an orifice is formed by opening and closing the flap 44. The inner surface 42 of the orifice forming wall 38 has a slit end 43a.
, A reinforcing rib 46 is formed in an annular shape.

The shape of the slit is not limited to a cross shape, but may be one slit, three slits arranged in a Y-shape, three slits intersected at an equal angle, and four slits. The slits of the book may be arranged in a U-shape. The cut length of the slit 43 is set in accordance with the viscosity of the contents, the desired discharge amount each time, and the material and shape of the slit valve, as in the prior art.

Next, the relationship between the cover B2 and the slit valve C and the operation of the cover B2 will be described. As shown in FIG. 5, the distance S1 from the lower end of the side cylindrical wall 21 of the cover B2 to the pressing surface 24 on the lower surface of the top wall 20 is determined by the distance between the upper surface of the cap base B1 upper wall 10 and the orifice forming wall 3 of the slit valve C.
8 is smaller by a distance d than a distance S2 to the peripheral edge 39 of the eighth. The peripheral edge 39 of the orifice forming wall 38 of the slit valve C protrudes by a height h from the upper end of the engaging ring 16 above the valve holding cylinder 15 of the cap base B1.
The lower surface of the second top wall 20 is allowed to approach the peripheral edge 39 of the orifice forming wall 38 without being hindered by the engagement ring 16.

Therefore, the cover B2 is attached to the cap base B
6, when the cover is closed, as shown in FIG. 6, the pressing surface 24 on the lower surface of the top wall 20 of the cover B2 presses the peripheral edge 39 of the orifice forming wall 38 and pushes down by a distance d to form the orifice. It acts to open the slit 43 by pushing down the wall 38 and increasing the degree of curvature of the surface of the formed wall.

Next, attachment of the slit valve C to the container A will be described. First, the slit valve C is attached to the cap base B1. Next, the slit base C1 is attached to the container A by screwing the cap base B1 to the mouthpiece 1 of the container A. Attachment of the slit valve C to the cap base B1 is performed between the inner cylinder 33 and the outer cylinder 34 of the valve base 30.
5 is inserted, and the valve base 30 is attached to the valve holding cylinder 15 so as to be fitted.

At this time, as shown in FIG. 5, the projecting ring 17 of the valve holding cylinder 15 is fitted into the engagement groove 35 of the inner cylinder 33 of the valve base 30, and the locking part 18 is engaged with the outer cylinder of the valve base 30. 34, the slit valve C is fastened to a fixed position, and the reinforcing ring 3 of the slit valve C is engaged.
6 is resiliently contacted with the upper surface of the projecting ring 17 so that the valve head 31, in particular, the peripheral edge 39 of the orifice forming wall 38.
Is accurately positioned with respect to the cap base B1. Therefore, the slit valve C
Is extremely easy to attach to the container A, and is positioned and held at an accurate position.

Next, the mode of use and the effects of the discharge container will be described. When using the container, first, the cover B2 of the cap B is opened to expose the orifice forming wall 38 of the valve head 31 and the pressing surface 6 of the body wall 7 of the container A is pressed by hand. As the pressure increases, the valve head 31 rises, and when the internal pressure reaches a certain pressure, the orifice forming wall 38 rises to make the surface flat, and when further pressurized, the flap 44 opens to form an orifice, and Is discharged.

When the pressure is released, the container A returns to its original state due to the restoring force of the container itself, and at that time, the internal pressure decreases, so that the valve head 31 returns to the original state and the flap 44 opens inward. The atmosphere is introduced. When the internal pressure becomes equal to the atmospheric pressure, the flap 44 is closed and the contents are kept sealed. When the desired contents are discharged and the container is not used, the cover B2 is closed and placed.

When the cover B2 is closed, the peripheral surface 39 of the orifice forming wall 38 is pressed by the pressing surface 24 on the lower surface of the top wall 20, the orifice forming wall 38 is pushed down, and the curvature of the forming wall surface is increased to open the slit 43. That is, at the same time, the spherical surface 23 of the projection 22 is joined to the peripheral portion 45 of the outer surface 41. Therefore, the orifice forming wall 3
8 is sealed by the pressing surface 24 of the cover B2 and the slit 43 is opened, so that the cut surfaces adjacent to each other do not block.

Since the pressing surface 24 presses the peripheral edge 39 of the orifice forming wall 38, the elevation of the valve head 31 of the slit valve C and the orbital movement of the orifice forming wall 38 are prevented. Furthermore, since the protruding ring 25 is fitted on the inner periphery of the engagement ring 16 and the inside is sealed, a water hammer phenomenon of the contents occurs when the discharge container is dropped or the container is shaken as necessary. However, it is possible to prevent the liquid from leaking from the slit valve C.

[0023]

Since the present invention is configured as described above, it has the following effects. When the lid is closed when the discharge container is stored, the orifice forming wall is pushed down by the pressing surface of the lid and the slit is maintained in an open state, so that the blocking of the cut surface can be eliminated. Therefore, when the discharge container is used, the slit does not have a poor opening.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view of a dispensing container of the present invention.

FIG. 2 is a plan view of the dispensing container with a cover removed.

3A and 3B are explanatory views of a cap, in which FIG. 3A is a cross-sectional front view of a cover, and FIG. 3B is a partial cross-sectional front view of a cap base.

4A and 4B are explanatory views of a slit valve, in which FIG. 4A is a plan view and FIG. 4B is a sectional front view.

FIG. 5 is a diagram showing a relationship between a cap and a slit valve, and is an explanatory diagram when a cover is removed.

FIG. 6 is a diagram showing a relationship between a cap and a slit valve, and is an explanatory diagram when the cover is closed.

[Explanation of symbols]

 A Container B Cap B1 Cap base B2 Cover C Slit valve 1 Portion 2 Body 6 Pressing surface 10 Upper wall 11 Side cylinder wall 12 Engagement cylinder 15 Valve holding cylinder 16 Engagement ring 17 Projection ring 18 Engagement part 20 Top wall 21 Side cylinder wall 22 Projection 23 Spherical surface 24 Pressing surface 25 Projection ring 26 Swelling ring 30 Valve base 31 Valve head 32 Substrate 33 Inner cylinder 34 Outer cylinder 36 Reinforcement ring 38 Orifice forming wall 39 Peripheral edge 40 Holding peripheral wall 41 Outer surface 42 inner surface 43 slit 44 flap

Claims (1)

[Claims] An orifice formed by attaching a slit valve to a mouth portion of a container via a cap, wherein the slit valve has a spherical concave portion on an outer surface and a slit in the center. The cap has a wall, and the cap comprises a cap base having a slit valve attached thereto and screwed to the container mouth portion, and a cover fitted on the cap base, and the cover has an orifice formed on the lower surface thereof. A discharge container cap having a slit valve, comprising a pressing surface engaging with a peripheral edge of a wall, wherein the slit is opened by engaging with an orifice forming wall when the lid is closed.