Sprayers and spray containers
The ejector's design with a fitting cylinder and inward ribs maintains sealing performance by preventing radial collapse, addressing the issue of liquid leakage in conventional ejectors.
JP2026062047APending Publication Date: 2026-04-09YOSHINO KOGYOSHO CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2026-04-09
AI Technical Summary
Technical Problem
Conventional ejectors experience liquid leakage due to a decrease in fitting strength between the ejection head and stem, primarily caused by swelling of polyolefin and polyester resin components when in contact with contents.
Method used
The ejector features a fitting cylinder with radially inward protruding ribs and a support column, enhancing the rigidity of the fitting cylinder to maintain sealing performance by preventing radial collapse and ensuring a secure fit with the stem.
Benefits of technology
The design effectively suppresses the reduction in fitting strength, thereby improving the sealing performance between the ejection head and stem, even when exposed to contents that cause swelling.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026062047000001_ABST
Abstract
The present invention provides a sprayer and a spray container in which the reduction in fitting strength between the spray head and the stem is suppressed, thereby improving sealing performance. [Solution] The ejection container 1 comprises a container 2 and an ejector 10. The ejector 10 comprises a mounting part 11 that can be attached to the mouth 2a of the container 2 in which a storage space S1 for contents C is formed, a pump 12 fixed to the container 2 by the mounting part 11 and capable of pumping the contents C, and an ejector head 30 having an outlet A3 for ejecting the contents C pumped by the pump 12 to the outside. The pump 12 comprises a cylindrical stem 19 that operates the pump 12 when pressed by the ejector head 30 and guides the contents C to the ejector head 30. The ejector head 30 comprises a fitting cylinder 34 fitted to the inner circumferential surface of the stem 19, and at least one rib 35 that protrudes radially inward from the inner circumferential surface of the fitting cylinder 34 and extends in the vertical direction.
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Citation Information
Patent Citations
Pump type dispenser
JP2022041269A