JPS581488Y2 - container lid - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lid for a so-called alignment container, which is composed of a non-circular container body such as a polygonal or elliptical shape and a lid of the same shape, and is closed after alignment.

In general, synthetic resin containers, especially lids, made by injection molding tend to have dimensional differences depending on the type of material and cooling shrinkage after molding, and in particular, variations in threaded portions are unavoidable.

Therefore, when such a lid is used for the above-described alignment container, when the lid is closed at a predetermined alignment position, it may not be possible to close the container in a completely airtight state due to uneven dimensional errors in the threaded portion.

Therefore, as disclosed in Japanese Utility Model Application Publication No. 51-148336, for example, a closing part that fits into the mouth of the container body and comes in close contact with the mouth, and a wall protruding from the upper surface of the mouth of the container body and the inner periphery of the lid. A backing having a hollow elastic part with a semi-annular cross section which is compressed and deformed by being sandwiched between the wall part is suspended and held in the center of the wall part so as to be movable up and down, and the hollow elastic part absorbs variations in the thread part and completely tightens the threaded part. A device that achieves an airtight state has been proposed.

However, this backing is a molded product made of elastic synthetic resin, and not only does it have a complicated shape and is extremely troublesome to mold, but it also requires the compressive deformation of a thin hollow elastic part at the mouth of the container body to maintain airtightness. Because of this, it is difficult to produce a large adhesion force, and it is not necessarily perfect.

The present invention was devised for the purpose of solving these problems and providing a lid that can be closed in a completely airtight state when the lid is closed at a predetermined position. In the case of a lid in which a body having a thread on the inner surface is fitted and locked to the outer body, a stopper that contacts the upper surface of the container mouth is fitted into the inner body so as to be able to slide up and down, and the stopper A fitting part with a diameter slightly larger than the inner diameter of the container opening is provided at the bottom, and an annular recess with a semicircular cross section on the top surface of the stopper is made into an annular shape opposite to the top part, and an elliptical elastic member with a vertically elongated cross section is provided. It is characterized by being configured so that the body protrudes upward and is worn.

An embodiment of the present invention will be described below with reference to the drawings.A protrusion 2 is provided on the upper inner surface of the outer body 3 of the outer lid body 1, which consists of a cylindrical outer body 3 and a top portion 15 that covers the upper surface of the outer body 3. An inner body 6 having an annular recess 4 on the outer surface of the upper part, a screw 5 on the inner side of the lower part, and a protrusion T on the inner surface of the upper part is fitted into the inner body 3 by engaging the recess 4 with the projection 2. It has stopped.

An inner stopper 10 is fitted onto the upper part of the protrusion 7 of the inner body 6 so as to be able to slide vertically, and a portion of the inner stopper 10 that protrudes below the protrusion 7 is in contact with the upper surface of the container opening 8. In addition, a fitting part 21 having a diameter slightly larger than the inner diameter of the container mouth part 8 is formed at the lower part of the inner stopper 10, and a spatula body 17 that reaches near the bottom of the container body 16 protrudes from the fitting part 21. It is provided.

An annular recess 11 with a semicircular cross section is formed on the top surface of the plug body 10, and an annular elliptical body 12 made of an easily deformable material such as soft rubber and having a vertically long cross section is provided with a gap 11 on both sides.
The elastic body 12 has a protruding portion 12 with a gap 14 formed between the upper surface of the plug body 10 and the lower surface of the top portion 15 by the protruding portion of the elastic body 12.

A locking piece 19 is provided at the base of the container mouth 80 of the container body 16, and the locking piece 1S is provided on the lower surface of the outer lid body 1.
Engagement recesses 20 are provided which fit into the container body 16, and these provide alignment between the container body 16 and the lid.

Alternatively, the plug body 10 may be inserted into the inner body 6 from above and fitted, and then the top portion 15 may be properly fixed to the upper surface of the outer body 3, or the inner body 6 may be inserted from the bottom surface of the outer body 3 which is integrally molded with the top portion 15. Stopper 10
The lid is constructed by inserting and fitting the inner body 6, and since the upper part of the inner body 6 is constricted by a notch 18 provided at the upper part, it can be easily inserted into the outer body 3 from the bottom surface, and the protrusion 2 can be inserted into the recess 4. can be engaged.

In the lid of this embodiment constructed as described above, the screw 5 of the inner body 6 is screwed into the screw 13 on the outer surface of the container opening 8, and the engagement recess 20 is fitted into the locking piece 19 when screwed. There is a gap 14 between the lower surface of the inner body 6 and the upper surface of the container body 16 immediately before
There is a narrower gap than the inner stopper 10, and the inner stopper 10 is in contact with the upper surface 9 of the container opening 8 (FIG. 1).

When the screw is further screwed in and aligned from this state, the inner body 6
The lower surface of the inner stopper 10 comes into contact with the upper surface of the container body 16.
Since the elastic body 1 does not descend in contact with the upper surface 9, it slides relatively upward in the inner body 6, narrowing the gap 14, and as a result, the elastic body 1
2 is compressed and deformed by being pressed by the lower surface of the top portion 15, and the annular recess 11
The inner stopper 10 is pressed against the upper surface 9 by elastic repulsive force (FIG. 2).

The fitting part 21 is forcefully fitted into the container opening 8, so that the container opening 8 is sealed on the inner surface and the upper surface 9.

As described above, according to the present invention, when aligned, the fitting part of the inner stopper has a larger diameter than the inner diameter of the container mouth, so it is forcibly fitted and tightly adheres to the inner surface of the container mouth (2). The annular elastic body on the top surface contacts the top surface of the container mouth and is compressed and deformed by the top of the outer lid body, resulting in a close contact due to the elastic repulsion force.・Since the ring-shaped elastic bodies are combined, by making the elastic bodies from rubber or other highly elastic materials, the stopper can be pressed with great force to seal the container body in a completely airtight state, which will not only prevent the contents from leaking, but also prevent fragrances and other substances from leaking. The emission of volatile components can also be effectively prevented.

In particular, according to the present invention, the annular recess has a semicircular cross section, and the elastic body has an elliptical cross section that is vertically long, so the elastic body is compressed and deformed greatly, and the bottom surface of the top part is uneven. Even when compressed, the round elastic body will conform and deform when pushed into the round annular recess, exerting a sufficiently large reaction force on the closure, and creating a stable sealing effect between the top surface of the container mouth and the closure. Not only is this possible, but since the elastic body does not deform into an irregular shape, unnecessary fatigue deterioration of the elastic body is prevented.

In addition, the annular elastic body recovers to its original shape with its own elastic force and can withstand repeated use, allowing the stopper to perform a complete sealing action over a long period of time. Since it is a forced fit, it also has the effect of preventing loosening when the lid is aligned.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a longitudinal sectional view of the state immediately before alignment, Fig. 2 is a longitudinal sectional view of the aligned state, Fig. 3 is a side view of the body, and Fig. 4 is a longitudinal sectional view of the state immediately before alignment. The figure is a plan view of the container body, and FIG. 5 is a bottom view of the lid. 1... Outer lid body, 3... Outer body, 5...
... Screw, 6 ... Inner body, 7 ... Protrusion, 10 ... Plug body, 11 ... Annular recess,
12...Elastic body, 15...Top part, 21
······Fitting portion.

Claims (1)

[Scope of utility model registration request] An inner body 6 comprising a top portion 15 and a cylindrical outer body 3 and having a screw 5 on the inner surface that is threadedly engaged with a screw 13 on the outer periphery of the container opening 8 is provided to be fitted and locked on the inner surface of the outer body 3. , an inner stopper 10 having a fitting part 21 with a diameter slightly larger than the inner diameter of the container mouth 8 at the lower part and in contact with the upper surface 9 of the container mouth 8 is fitted into the inner body 6 so as to be slidable up and down. , an annular recess 11 having a semicircular cross section on the upper surface of the inner stopper 10 is provided with an annular elastic body 12 having a vertically elongated elliptical cross section facing the top 15 and having gaps 11' on both sides.
A lid for a container that is attached so as to protrude upward.