Spray Bottle Cap With Anti-Reversion Snap and Guide Groove
Solution Overview
Problem
Existing spray bottle caps are either difficult for older individuals to open or pose safety risks due to loose fits, leading to potential accidental opening by infants, and current child-resistant designs are laborious and inconvenient.
Innovation Solution
A spray bottle cap design featuring a pressing head with an anti-reversion snap mechanism and threaded connection, combined with a protective cap, which ensures secure closure and easy operation by allowing the protrusion portion to slide along a guide groove for liquid extraction, enhancing safety and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the arc-shaped groove and arc-shaped boss structure is used to connect outer lid and inner lid, then the connection strength is improved, but the ease of operation deteriorates (requires larger power to pull out outer lid, unfavorable for old users)
Solution Approach 1:
The patent applies the dynamics principle by making the connection structure changeable between two states: a tight-fit state for secure closure and a loose-fit state for easy opening. The outer lid can be pulled out to transform from tight-fit to loose-fit, allowing old users to open it easily while maintaining strong connection during normal use. This dynamic transformation resolves the contradiction between connection strength and ease of operation.
2Reliability
If the arc-shaped groove and arc-shaped boss structure is used with tight fit, then the safety is improved (prevents accidental opening), but the ease of operation deteriorates (requires larger power to open)
Solution Approach 1:
The patent uses the dynamics principle to create a transformable connection structure that switches between tight-fit (safe) and loose-fit (easy to open) states. The outer lid can be pulled out to change from tight-fit to loose-fit, enabling old users to open it easily while maintaining safety during normal use. This resolves the contradiction between safety and ease of operation.
3Ease of manufacture
If the threaded connection structure is used between outer cap body and inner cap body, then the ease of manufacture is improved, but the safety deteriorates (apt to be opened by infants)
Solution Approach 1:
The patent applies the dynamics principle by making the connection structure transformable between tight-fit and loose-fit states. The outer lid can be pulled out to transform from tight-fit to loose-fit, allowing easy opening by old users while preventing accidental opening by infants. This resolves the contradiction between ease of manufacture and safety.
4Reliability
If the child-resistant closure with extended wall and boss transformation is used, then the safety is improved (unable to be opened by child), but the ease of operation deteriorates (laborious operation, difficult for old to open)
Solution Approach 1:
The patent uses the dynamics principle to create a simple transformable connection structure. The outer lid can be pulled out to transform from tight-fit to loose-fit, enabling easy opening by old users while maintaining child-resistant safety during normal use. This resolves the contradiction between safety and ease of operation by simplifying the opening mechanism.
Data Source
Figure 1~4a
Figure 4b~5b
Figure 5c~6c
AI summary
The present invention provides a spray bottle cap comprising a base lid, a pressing head and a protective cap. An upper end of an inner wall of the base lid is provided with a first limit rib and a first guide groove penetrating the first limit rib. The pressing head connects to the upper end of the base lid, and comprises a outlet rob, a pressing handle and a connection portion, where the outlet rod is provided with an outer thread, the lower end of the connection portion is provided with a first limit flange and a protrusion portion, and the pressing handle is provided with an anti-reversion snap parent body; the first limit flange is arranged under the first limit rib, and the protrusion portion is up-down slidable along the first guide groove and is supportable on the upper end face of the base lid. The protection cap is a double-layer structure covering the outside of the outlet rod, where the inner layer is provided with an inner thread matched with the outer thread of the outlet rod, and the lower end of the outer layer is provided with a daughter body matched with the anti-reversion snap parent body. The present invention also provides a sprayer bottle comprising a bottle body and a sprayer, where the mouth of the bottle body is connected to the spray bottle cap. The present invention is safe, and is less-laborious and convenient in operation.