JP2002053162A - Cap device for vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap device for a vessel which can reduce the cost by reducing the number of parts to be assembled, and reliably prevent a valve element from being detached from a cap body of a mouth of the vessel. SOLUTION: Since valve pairs 5 are held between a tip surface of the mouth 2 of the vessel and a lower surface part 21c of the inner circumference of the cap body 21, the valve element can be held without using any other separate parts such as a stopper in Fig. 4, and the number of parts can be reduced compared with a conventional product, and the cost thereof can be reduced, and the valve element is reliably prevented from being detached from the cap body of the mouth of the vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap device provided at a mouth portion of a container for storing liquid products such as kitchen detergent, shampoo, rinse, liquid detergent, and toothpaste.

[0002]

2. Description of the Related Art Conventionally, a user purchases a liquid product such as a kitchen detergent in a container. Then, the user opens the cap at the upper end of the container when using the liquid product, and then squeezes the container with the container opening facing downward, thereby causing the liquid product to be poured into the place of use. This cap is usually of the type that opens and closes the liquid passage of the inner stopper provided at the mouth of the container.However, when the liquid runs out, or when the container is lifted, the internal pressure rises due to gripping, and the It is not easy to use, for example, there is a fear that unexpected scattering or generation of bubbles may be caused, or the liquid product may leak simply by turning the container upside down and turning the container mouth downward.

Accordingly, a valve body made of a flexible silicone rubber film having a slit and provided with a slit which opens and closes in response to the pressure in the container is provided on the inner plug, and the slit of the valve body has a certain pressure. The liquid product is designed so as not to open unless it is added, thereby preventing unexpected splashing and generation of bubbles of the liquid product, and preventing the liquid product from leaking when the container is inverted.

FIGS. 4 to 6 are explanatory views of a cap device 3 provided at a mouth portion 2 of a conventional container 1 for storing a liquid product. This type of cap device 3 is made of a flexible silicone rubber wall having a slit 4 formed in a concave portion 5d at the center of a zenith portion 5a, and a valve body 5 which opens and closes in response to the pressure in the container 1; The zenith part 5a of the valve body 5 is held in a state of being exposed to the outside through the opening part 6, and the mouth part 2 of the container 1 is held.
And an overcap 8 that detachably covers the opening 6.

That is, as shown in FIG. 6, the valve element 5 has a generally bowl-like shape with its entire surface lying down, and a flange 5c is formed in an annular shape around the bottom 5b (an example of a peripheral surface). And the zenith part 5a is a concave part 5d concaved in the central part.
A + -shaped slit 4 is opened near the center of. As shown in FIG. 5 and FIG. 6B, a recess 9 is formed on the bottom side of the flange portion 5c of the valve element 5 over the entire circumference of the flange portion 5c. The valve body 5 is housed inside the cap body 7 and held. A stopper 11 having a substantially flat ring shape is fitted into the inner peripheral part of the body 7 from below the cap body 7 for holding the valve body 5. On the upper surface of the stopper 11, a projection 12 that fits into the recess 9 of the flange portion 5c is formed to protrude like a wall.

The container 1 has a generally cylindrical mouth portion 2 having an upper portion tapered in a stepped manner from a shoulder portion, and a thread 2a of a male screw is formed on the outer peripheral surface of the mouth portion 2. As shown in FIG. 5, the cap body 7 has a large diameter portion 7a, a medium diameter portion 7b,
Large-diameter portion 7a becomes small diameter portion 7c is threaded 7a ₁ of the inner circumference of the female screw is formed. By screwing the threads 2a and 7a ₁ together covered the large-diameter portion 7a in the mouth portion 2,
The cap body 7 is fixed to the mouth part 2. Inside the large-diameter portion 7a, a wall portion 10 hanging down like a wall toward the inner periphery of the container mouth portion 2 and sandwiching the mouth portion 2 together with the large-diameter portion 7a is integrally formed. The flange portion 5c of the valve body 5 abuts on the stepped inner peripheral portion of the middle diameter portion 7b and the small diameter portion 7c, and is fixed by being pressed by the ring-shaped stopper 11 from below. The protrusion 12 on the upper surface of the stopper 11 fits into the recess 9 of the valve element 5 to prevent the valve element 5 from falling off. Further, since the outer peripheral edge of the stopper 11 is engaged with the projection 13 on the inner peripheral wall of the middle diameter portion 7b, the stopper 11 is fitted and fixed inside the middle diameter portion 7b.

The overcap 8 has a general mushroom shape in which an umbrella-shaped flange 8b is formed on the upper part of the outer periphery. In the vicinity of the center of the bottom surface 8a of the overcap 8, inner and outer ribs 8c and 8d are formed so as to be fitted to the tip of the mouth portion 2. Locking projections 14 and 15 corresponding to each other are formed on the inner periphery of the outer rib 8d and the outer periphery of the small diameter portion 7c of the cap body 7.

[0008]

However, there are the following problems in order to store a liquid product in a container using the above-mentioned valve body and make it into a commercial product. In other words, since the flange is formed protruding on the outer peripheral surface and the flange is clamped by the stopper of another part on the inner part of the cap body, the number of parts increases and the cost increases, and there is a process for assembling the stopper. In addition, the assembling work of the cap device is troublesome, and the work load is correspondingly increased. On the other hand, since the stopper comes in direct contact with the internal solution, it is necessary to carefully select a material having good content resistance. When the valve body is held on the cap body by the stopper, the valve body is made of a resin such as silicone rubber, so that when the valve body gets wet with a liquid product,
It becomes slippery even if firmly pinched. In particular, when the weight of the liquid product is applied to the valve body, such as when the container is turned downward during use, the valve body may slide down from the holding member. In this case, it is not possible to prevent leakage of the liquid product by the valve body.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to reduce the cost by reducing the number of assembly parts, and to reliably prevent the valve body from falling off from the cap body at the container mouth. It is an object of the present invention to provide a container cap device that can be used.

[0010]

The present invention has the following configuration to achieve the above object. The present invention relates to a cap device provided at a mouth portion of a container for accommodating a liquid product, wherein the valve body is made of a flexible resin film having a slit formed in a part thereof, and the slit opens and closes in response to the pressure in the container. When,
A valve body having a cap body fixed to a mouth portion of the container while holding the slit forming portion of the valve body exposed from the opening to the outside, and an overcap that removably covers the opening portion; A flange portion is formed around the body, and at least a convex portion is provided on the lower surface of the cap body and / or the upper surface of the container mouth portion in contact with the flange portion, and this flange portion is provided between the lower surface of the cap body and the upper surface of the container mouth portion. A container cap device characterized in that the valve element is held between the container caps. Preferably, a through hole is provided in the flange portion of the valve body, and a convex portion is fitted into the through hole to hold the valve body.

According to the present invention, a flange portion is formed on the peripheral surface of the valve body, and at least a convex portion is provided on the lower surface of the cap body and / or the upper surface of the container mouth portion in contact with the flange portion. Since the valve body is held between the lower surface of the main body and the upper surface of the container mouth, the valve body can be held without using a separate part such as a stopper that requires careful selection of a material having good content resistance. The cost can be reduced by reducing the number of parts as compared with the conventional one, and the valve body can be reliably prevented from falling off from the cap body at the container mouth. Further, since at least the convex portion is provided on the lower surface of the cap body and / or the upper surface of the container mouth, the engaging force between the surface portion of the flange portion and the cap body and / or the container mouth becomes large, and the valve body is firmly held. Even if the valve body made of resin such as silicone rubber gets wet with the liquid product, it will not slip easily. In particular, even when the weight of the liquid product is applied to the valve body, such as when the container is turned downward during use, there is no possibility that the valve body will slide down from the holding member.

Further, in the case where the holding member is used as a container mouth portion and held between the tip end surface of the mouth portion and the inner surface of the cap body, when the cap body is screwed into the container mouth portion and held in mounting the valve body, Even when the valve body flange is pressed while sliding between the inner surface of the cap body and the container mouth, the convex portion is elastically deformed (when the concave portion is formed on the corresponding surface, the convex portion fits into the concave portion). Until the flange portion is brought into close contact with the corresponding surface, the valve body between the inner surface of the cap body and the container mouth portion is not twisted, and there is no danger of the flange portion falling off.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show Embodiments 1 to 3.
FIG. 3 is an explanatory view of a cap device 3 provided at a mouth part 2 of a container 1 for accommodating the liquid product according to FIG. The same parts as those in the conventional example of FIGS. 4 to 6 are denoted by the same reference numerals.

As shown in FIG. 1, in the first embodiment,
The valve body flange portion 5c is sandwiched between the cap body 21 and the mouth portion 2 without using the stopper 11 of the conventional example. Specifically, the cap body 21 is
a, large diameter portion 7a becomes small diameter portion 21b is threaded 21a ₁ of the inner circumference of the female screw is formed. The large diameter portion 21a by screwing the threads 2a and 21a ₁ together covered the mouth portion 2, to fix the cap body 21 to the mouth portion 2.
In this case, the upper surface of the flange portion 5c of the valve body 5 contacts the lower surface portion 21c of the stepped inner periphery of the large diameter portion 21a and the small diameter portion 21b,
The upper surface of the lip 2 presses the lower surface of the flange 5c from below, so that the flange 5c is sandwiched between the lower surface 21c and the lip 2. In addition, the flange portion 5c
A convex portion (or a concave portion) 22 is formed on each of the upper surface and the lower surface portion 21c of the cap body 21.

In the embodiment, since the valve pair 5 is held by being sandwiched between the front end surface of the container mouth 2 and the lower surface 21c of the inner periphery of the cap body 21, the separate parts such as the stopper shown in FIG. Since the valve body can be held, the number of parts can be reduced as compared with the conventional one, the cost can be reduced, and the valve body can be reliably prevented from falling off from the cap body at the container mouth. Further, when the cap body 21 is screwed into the container mouth portion 2 and clamped in assembling the valve body 5, the valve body 5 flange 5 c is attached to the lower surface portion 21 of the cap body 21.
c and the container mouth portion 2, even when pressed while sliding, the convex portion 22 is elastically deformed (when a concave portion is formed on the corresponding surface, the convex portion fits into the concave portion) and the like, and the convex portion 22 is pressed against the corresponding surface. Until the flange portion 5c comes into close contact, the lower surface portion 21c on the inner periphery of the cap body
Since the valve body 5 between the container body 2 and the container mouth part 2 is not twisted, there is no danger of falling off.

Therefore, when the liquid product is poured out of the container 1, the valve body does not fall out even if the slit 4 is opened and closed many times by using the valve body 5, and the amount of the product is designed as originally designed. The liquid product can be dispensed and supplied to the target location each time.

Each of the above embodiments is merely an embodiment of the present invention, and various modifications can be made within the scope of the present invention. For example, as in Embodiment 2 shown in FIG. 2, the lower surface of the flange 5c and the upper surface of the container mouth 2
A convex portion (or concave portion) 22 may be formed on each or one of them. Further, the container mouth 2 and the cap body 2
1 may be formed on the lower surface of the flange portion 5c. Further, as shown in Embodiment 3 of FIG. 3, a through hole 5f may be provided in the flange portion 5c of the valve body 5, a convex portion 25 may be provided from the lower surface of the cap body 21, and fitted into the through hole 5f.
In addition, you may provide the convex part 25 from the container mouth 2, and may fit in the through-hole 5f.

[0018]

As described above, according to the present invention, it is possible to reduce the cost by reducing the number of assembly parts which are required to have a high content resistance when exposed to the internal solution, and to reduce the cost of the valve body and the valve body at the mouth of the container. Can be reliably prevented from dropping from the cap body. In addition, since the convex portion is provided on the container mouth and / or the lower surface of the cap body, the coefficient of friction between the surface of the flange portion and the clamping surface of the clamping member increases, and the valve body is firmly clamped. Even if the resin valve body gets wet with the liquid product, it becomes less slippery. Therefore, falling off of the valve element can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a main part of a container cap device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of a half section of a main part of a cap device according to a second embodiment.

FIG. 3 (a) is a half sectional view of a main part of a cap device according to a third embodiment, and FIG. 3 (b) is an explanatory view of a valve body.

FIG. 4 is an explanatory view of a conventional container cap device.

FIG. 5 is a half sectional view of a main part of a conventional cap device.

6A and 6B are detailed explanatory views of a conventional valve element, wherein FIG. 6A is a plan view and FIG. 6B is a side view including a half section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Mouth part 3 Cap device 4 Slit 5 Valve 5c Flange 5f Through hole 7 Cap body 8 Overcap 8a Bottom part of overcap 21 Cap body 25 Convex part

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshihiro Tashiro 1-3-7 Honjo, Sumida-ku, Tokyo Inside Lion Corporation (72) Inventor Yohei Saito 1-3-7, Honjo, Sumida-ku, Tokyo No. Lion Corporation (72) Inventor Teru Matsumoto 1-9-138 Takanodai, Funabashi-shi, Chiba F-term (reference) 3E084 AB01 BA03 CA01 CB02 DA01 DB12 DB13 FA09 FB01 FC07 GA04 GA08 GB04 GB12 KB01 LA17 LB02 LD13 LD16

Claims (2)

[Claims] 1. A cap device provided at a mouth portion of a container for accommodating a liquid product, wherein the valve is made of a flexible resin film having a slit formed in a part thereof, and the slit is opened and closed according to the pressure in the container. A valve body, a cap body that holds the slit forming portion of the valve body exposed from the opening and is fixed to the mouth of the container, and an overcap that removably covers the opening. A flange portion is formed around the valve body, and at least a convex portion is provided on the lower surface of the cap body and / or the upper surface of the container mouth portion in contact with the flange portion, and this flange portion is connected to the lower surface of the cap body and the container mouth portion. A container cap device, wherein the valve body is held between upper surfaces. 2. The container cap device according to claim 1, wherein a through hole is provided in a flange portion of the valve body, and a convex portion is fitted into the through hole to hold the valve body.