Title:
ANTI-LOCKING PISTON AND SCREW COMBINATION AND ROTATING DISCHARGE CONTAINER
Document Type and Number:
WIPO Patent Application WO/2023/202273
Kind Code:
A1
Abstract:
An anti-locking piston and screw combination and a rotating discharge container (700), relating to the field of cosmetic packaging materials. The anti-locking piston and screw combination comprises a piston (130), a screw (110) and an anti-locking structure (120). Because the piston (130) is engaged with the screw (110) by means of a screw thread, and the piston (130) is sleeved on the screw (110), the piston (130) can rotate relative to the screw (110), thereby achieving the function of the piston (130) extruding a material body. Because the anti-locking structure (120) is used for controlling a contact area S1 between the piston (130) and the screw (110) to be less than a projection area S2, the projection area S2 is used for indicating a projection area of a contact end face (200) between the piston (130) and the screw (110) on a reference plane, and the reference plane is perpendicular to the axis of the screw (110), the contact area between the piston (130) and the screw (110) is reduced, and the problem of locking between the piston (130) and the screw (110) during assembly of the piston and screw combination is avoided, thereby reducing the reject ratio of piston and screw combinations in industrial production, and reducing material waste.
Inventors:
YANG HAIYING (CN)
Application Number:
PCT/CN2023/081510
Publication Date:
October 26, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
SHYA HSIN PACKAGING IND CHINA CO LTD (CN)
International Classes:
A45D34/04; A45D40/26
Domestic Patent References:
| WO2012102427A1 | 2012-08-02 |
Foreign References:
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Attorney, Agent or Firm:
KUNSHAN ZHONGJI GUOCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. et al. (CN)
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