Patent ID: 11950678
Assignee: YOSHINO KOGYOSHO CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC A  B | IPC A  B

Claim 0:
1. An application container comprising:
a container main body in which contents are accommodated;
an inner plug mounted on a mouth part of the container main body; and
a cap configured to cover the inner plug from above and detachably mounted on a container body including the container main body and the inner plug,
wherein the inner plug includes:
a seal cylinder section fitted into the mouth part,
a holding cylinder section provided with a communication port configured to bring inside and outside of the container main body in communication with each other, the holding cylinder section disposed inside in a radial direction of the seal cylinder and extending in an upward/downward direction, and
an application ball rotatably held in the holding cylinder section and a portion of which is exposed from above through the holding cylinder section,

the holding cylinder section includes:
a holding cylinder main body configured to come into contact with the application ball from an outer side and an upper side in a radial direction, and
a soft seal part held by the holding cylinder main body, formed of a material softer than the holding cylinder main body, and configured to come into contact with the application ball from below, the soft seal part disposed inside a lower end portion of the holding cylinder main body,

the soft seal part has an annular shape extending around a center axis of the holding cylinder main body and is elastically deformable,
the application ball is pushed downward by the cap and pushed into the soft seal part as the cap is mounted on the container body,
the holding cylinder main body includes:
a first inner circumferential section located at a lowermost side of an inner circumferential surface of the holding cylinder main body, an inner diameter of which is smallest in the holding cylinder main body,
a second inner circumferential section located above the first inner circumferential section of the inner circumferential surface of the holding cylinder main body, an inner diameter of which is greater than the inner diameter of the first inner circumferential section, and
a third inner circumferential section located between the first inner circumferential section and the second inner circumferential section of the inner circumferential surface of the holding cylinder main body, and connecting an upper end portion of the first inner circumferential section and a lower end portion of the second inner circumferential section, and

the soft seal part includes:
a first outer circumferential section, an outer diameter of which is smallest in the soft seal part, and which is in close contact with the first inner circumferential section,
a second outer circumferential section, an outer diameter of which is greater than the outer diameter of the first outer circumferential section, and which is in close contact with the second inner circumferential section,
a third outer circumferential section located between the first outer circumferential section and the second outer circumferential section of an outer circumferential surface of the soft seal part, and connecting an upper end portion of the first outer circumferential section and a lower end portion of the second outer circumferential section, and
a seal protrusion configured to come into contact with a lower end portion of an outer circumferential surface of the application ball from below.