Title:
AIRTIGHT STRUCTURE OF AIRTIGHT POWDER BOX
Document Type and Number:
WIPO Patent Application WO/2023/065821
Kind Code:
A1
Abstract:
Disclosed in the present utility model is an airtight structure of an airtight powder box, comprising a powder tray and an internal cover. The internal cover is hingedly connected to one side of the powder tray by means of a rotating shaft. The internal cover can open and close the powder tray. An opening of the powder tray is provided with a seal ring. The seal ring is divided into first and second seal rings. The lower side of the second seal ring is positioned at the opening of the powder tray. The lower side of the first seal ring is connected to the upper side of the second seal ring (capable of integrated injection molding of a mold). The second seal ring is hard, and the first seal ring is soft. The upper side of the first seal ring is flanged outward and downward, and an outward flange forms an abutting surface. The lower bottom surface of the internal cover can be pressed against the abutting surface of the outward flange. In this way, the bottom surface of the internal cover is squeezed against the abutting surface of the outward flange, causing further deformation of the outward flange of the first seal ring, such that the sealing effect can be effectively enhanced. Therefore, the present utility model has good airtight effect, and can effectively prevent humidification of cosmetics in the powder box, and effectively the prolong service life.
Inventors:
YANG HAIYING (CN)
Application Number:
PCT/CN2022/115319
Publication Date:
April 27, 2023
Filing Date:
August 27, 2022
Export Citation:
Assignee:
SHYA HSIN PACKAGING IND CHINA CO LTD (CN)
International Classes:
A45D33/22; A45D33/34
Foreign References:
| CN216316160U | 2022-04-19 | |||
| CN205207670U | 2016-05-04 | |||
| CN214017270U | 2021-08-24 | |||
| CN206342087U | 2017-07-21 | |||
| CN206462588U | 2017-09-05 | |||
| CN210124623U | 2020-03-06 | |||
| CN212213499U | 2020-12-25 | |||
| CN213524222U | 2021-06-25 | |||
| JP2003172454A | 2003-06-20 |
Attorney, Agent or Firm:
KUNSHAN ZHONGJI GUOCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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