JPS6238926Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a container spout made of an elastic material, consisting of a cylindrical body that serves as a spout of the container, and a lid that can close this cylindrical body. .

``Prior Art'' Conventionally, in order to close the cylindrical body that serves as the spout of a container made of a resilient synthetic resin material with a lid, it is necessary to bring the fitting contact wall surfaces of the two into close contact with each other and close the lid. One method is to wrap a convex strip around the inside of the edge and lock it in the groove of the cylinder to close it, and the other is to screw together by providing a convex female or male screw on the inner or outer wall of both. There are many ways to close the site.

However, in the former case, in order to maintain a good seal, the dimensions (inner and outer diameter) of the contact wall surface where both fit together must be
It had to be finished with considerable precision, and "sink marks" and "warps" that occur during injection molding, etc., were a serious drawback in maintaining airtightness.

Therefore, products that are mass-produced and processed at high speed must be subjected to frequent sampling inspections, 100% visual inspections, or sorting.

Moreover, in the case of the latter screw method, the molding die is complicated, resulting in poor productivity.Furthermore, the lid has the drawback that it requires both sides to be attached and detached.

"Problems to be Solved by the Present Invention" In view of the above-mentioned drawbacks of the conventional technology, the present invention is capable of reliably sealing even if there are some dimensional errors in the cylinder and lid, and is easy to manufacture. To obtain a container spout which is easy and suitable for mass production and high-speed processing, and whose lid body does not easily come off even if an unexpected external force is applied after sealing.

"Means for Solving Problems" The present invention is designed so that contact pressure is exerted both vertically and horizontally on the wall surface when the cylinder body and lid body are mated. In addition, a large number of independent slightly protruding annular protrusions that can be elastically engaged with each other are arranged in parallel, and the contact wall surface of either the cylinder or the lid is made to have a diameter of its base. The above problem was solved by forming the contact wall into a tapered shape having a slightly larger diameter than the other contact wall, and by forming the other contact wall into a straight line.

"Embodiments of the present invention" The present invention will be described in detail below with reference to embodiments shown in the drawings.

In the embodiment shown in FIG. 1, reference numeral 1 denotes a container made of metal, plastic or other material, and the container is designed to fit closely against a perforated rim 2 provided in a part of the container 1. A cylindrical body 3 serving as a mouth,
Each of the lids 4 that can close the cylinder 3 is made of an elastic material such as plastic or rubber, and each contact between the cylinder 3 and the lid 4 is The walls 5 and 6 (which serve as the outer wall surface or the inner wall surface) have a plurality of holes that can be elastically engaged with each other so that when mated, contact pressure is applied both vertically and horizontally to the wall surface. individual slightly protruding annular protrusions 7,
8... and 9, 10... are arranged in parallel.

The contact wall surface 5 of the cylindrical body 3 is formed in a tapered shape whose diameter at its base is slightly larger than the diameter of the contact wall surface 6 of the lid body 4, and ...is provided near the base.

Further, the contact wall surface 6 of the lid body 4 that closes the cylinder body 3 is linear, and the protrusions 9, 10...
is provided near the tip.

In this embodiment configured as above,
When the lid 4 is fitted to the cylinder 3, the material is elastic and the contact wall surface 5 of the cylinder 3 is tapered, so the lid 4 is fitted very easily. can do.

Furthermore, when pushed in, a large number of independent slightly protruding annular protrusions 7, 8, . . . Since the contact wall surface 6 expands,
Contact pressure acts both vertically and horizontally with respect to the wall surface.

Therefore, even if there is some dimensional error between the two, this will be absorbed and the seal will be reliably sealed, and the lid 4 will not easily come off even if an unexpected external force is applied after sealing.

In addition, a protrusion near the base of the cylinder 3 that has a large diameter,
Since it is more strongly elastically engaged with the protruding strip near the tip of the lid 4, there is also the effect of improving airtightness.

Next, different embodiments of the present invention shown in FIGS. 2 and 3 will be explained.

In the description of these embodiments, the same components as those of the embodiments of the present invention are denoted by the same reference numerals and redundant explanations will be omitted.

The main difference between the embodiment shown in FIG. 2 and the previous embodiment is that the cylindrical body 3 and the lid 4 are integrally molded with a band 11, and are made of an elastic material such as thermoplastic plastic. By integrally molding the cylinder body 3 and the lid body 4, the problem of poor fitting due to dimensional variations, etc., which was a drawback when the cylinder body 3 and the lid body 4 were manufactured separately, can be avoided because the variation in shrinkage becomes equal when both are manufactured under the same conditions. This problem is solved by itself, there is no inconvenience caused by excess or deficiency in the quantity of the two, and there is also the advantage that the lid body will not be lost during use.

The difference between the embodiment shown in FIG. 3 and the embodiment shown in FIG.
Similar effects can be obtained with this configuration in that the lid 4 is fitted into the inner wall surface of the cylinder 3 and the contact wall surface 6 of the lid 4 is tapered.

"Effects of the present invention" As described above, the present invention has the following effects.

(1) When the cylindrical body and the lid are fitted together, the independent protrusions on each contact wall elastically engage with each other due to the elasticity of the material, and the straight contact wall expands. The contact pressure acts both vertically and horizontally against the wall surface, absorbing any slight dimensional errors between the cylinder and the lid, ensuring a secure seal, and preventing accidental damage after sealing. The lid will not come off easily even if external force is applied.

(2) The numerous protrusions provided on the cylinder and lid are slightly protruded to the extent that they can elastically engage with each other when they are fitted together, so they do not have the same shape as the conventional screw type. It is easier to manufacture than the conventional one, and it does not require a complicated mold, so it can be manufactured at low cost.It is suitable for mass production and high-speed processing.In addition, the lid body can be attached by simply pushing it in, so it can be manufactured at a low cost. It can be easily installed without the need to turn it like a regular object.

(3) If the cylindrical body and the lid body are integrally molded using a joint, compared to the case where they are manufactured separately, poor fit due to dimensional variations, etc. will be eliminated by themselves, and excess quantity of both parts will be eliminated. There are no inconveniences caused by shortages,
Moreover, the lid body will not be lost during use.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of one embodiment of the present invention, and FIGS. 2 and 3 are longitudinal cross-sectional views of other embodiments of the present invention. 1. Container, 2. Perforated edge, 3. Cylindrical body,
4. Lid, 5. Contact wall surface of cylinder, 6. Contact wall surface of lid, 7, 8. Convex strip of cylinder, 9, 1
0...Protruding stripes on the lid body, 11...Tie band.

Claims (1)

[Claims for Utility Model Registration] (1) In a container spout made of an elastic material, comprising a cylindrical body serving as a spout of the container and a lid body capable of closing the cylindrical body, the cylindrical body and the lid body A large number of independent, slightly protruding annular protrusions that can be elastically engaged with each other when fitted are arranged in parallel on each contact wall surface to which the contact wall is fitted, and the contact pressure is applied to the wall surface. In order to work in both the vertical and horizontal directions, the contact wall of either the cylinder or the lid is tapered so that the diameter of the base is slightly larger than the diameter of the other contact wall. and the other contact wall surface is linear. (2) The container spout according to claim 1, wherein the cylinder body and the lid body are integrally formed by a band.