Liquid container

Abstract

A liquid container comprises: a container main body including an inlet at a head thereof and a neck having an external thread portion on an outer circumferential surface thereof; and a cap including an internal thread portion on an inner surface of a circumferential wall thereof for engagement with the external thread portion, wherein the liquid container is characterized in that: the cap is provided with a protrusion insertable into the inlet for closing the inlet and an engagement part located under the inner surface of the circumferential wall; the container main body includes a first lock part so that the engagement part can make contact with and run over the first lock part when the cap is put on the container main body and is rotated, and a second lock part making contact with the engagement part for preventing the cap from being further rotated in a tightening direction after the engagement part runs over the first lock part; and the second lock part is positioned such that the inlet can be liquid-tightly closed by the protrusion when the engagement part is brought into contact with the second lock part.

Description

technical field [0001] The present invention relates to a liquid container with improved operability for opening and closing a bottle cap. [0002] this application claims the priority of Japanese Patent Application No. 2011-020150 for which it applied to Japan on February 1, 2011, and uses the content here. Background technique [0003] A general liquid container includes a container body having a container for storing the internal liquid and a mouth and neck formed with a discharge port for discharging the internal solution; and a container cap that covers the mouth and neck and opens and closes the discharge port. In addition, the container cap can close the discharge port by being screwed to the mouth and neck. [0004] Especially for containers for small-capacity products such as eye drops containers, the main body of the container is generally small, and the outer diameter of the container cover is also made very small. In addition, from the perspective of appearance...

AI Technical Summary

Problems solved by technology

[0005] However, due to the small diameter and mirror finish of such container caps, the user's hands tend to slip when holding the container and performing the rotation operation of closing the cap.

Therefore, the user wants to obtain the feeling that it has been tightened too much, so it is likely to exceed the proper opening and closing position, and the container cap is tightened too much, and it becomes difficult to open the container cap during use.

In addition, even if the above-mentioned mirror treatment is not performed, the container cap may be overtightened due to the shape and material of the container cap, and the same problem will occur.

[0006] And, the material of the container lid of liquid container is generally synthetic resin materials such as polystyrene, polypropylene, because the kind, concentration, method of use, and use environment etc. of the internal liquid component contained in the container, known also easily There are problems such as cracking on the container lid

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