Pump Cosmetic Bottle Inner Outer Structure
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Solution Overview
Problem
Existing cosmetic bottles experience issues with sticking and uneven discharge when pressed, particularly for emulsion cosmetics.
Innovation Solution
A pump cosmetic bottle design featuring an inner and outer bottle structure with a specific diameter gradient and a pump mechanism that includes a pump cylinder, valve, piston, and elastic components to ensure smooth pressing and stable discharge volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional single-bottle structure is used, then the structure is simple, but the pressing operation becomes stuck and discharge becomes uneven
Solution Approach 1:
The bottle is divided into an inner bottle and an outer bottle as separate components. The inner bottle contains the pump mechanism while the outer bottle provides structural support and contains the inner bottle. This segmentation allows independent optimization of each component, enabling smooth pressing operation through the inner bottle's pump design while maintaining structural integrity through the outer bottle.
Solution Approach 2:
The inner bottle is nested within the outer bottle, with the inner bottle's outer surface fitting into the outer bottle's inner cavity. The pump mechanism is nested within the inner bottle structure. This nested arrangement achieves compact design while maintaining the functional independence needed for smooth operation and even discharge.
2Manufacturing precision
If the bottle structure lacks precise dimensional control, then manufacturing is easier, but discharge volume becomes unstable
Solution Approach 1:
The bottle structure incorporates specific local dimensional features including a diameter gradient on the inner bottle body (outer diameter larger than inner bottle mouth diameter) and a multi-stage diameter variation on the outer bottle. These localized precision features control material flow and pump operation to ensure stable discharge volume, while other portions of the bottles can be manufactured with standard tolerances.
Solution Approach 2:
The design specifies particular dimensional parameters including the diameter gradient ratio between inner bottle body and mouth, and the multi-stage diameter variations on the outer bottle. By controlling these key parameters within specified ranges, the patent achieves stable discharge volume while allowing manufacturing flexibility within acceptable tolerances.
3Ease of operation
If the pump mechanism lacks proper structural support, then assembly is simpler, but pressing operation becomes stuck
Solution Approach 1:
The pump mechanism is nested within the inner bottle structure, with the pump cylinder, piston, and valve components arranged in a compact nested configuration. The inner bottle itself is nested within the outer bottle providing structural support. This nested arrangement ensures proper alignment and support of moving parts to prevent sticking during pressing operation.
Solution Approach 2:
The pump mechanism is divided into separate functional components including the pump cylinder, piston, valve, and connecting rod, each manufactured and assembled independently. This segmentation allows for easier assembly and maintenance while ensuring proper structural support for each component to prevent sticking during operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves smooth pressing and stable discharge volume by maintaining coaxiality during installation, ensuring consistent material delivery.
Implementation Method 1
an elastic part arranged between a second convex ring on the periphery of the upper end of the pump core connecting rod and the upper end face of the pump limit sleeve
Implementation Method 2
the bottom of the pump cylinder is provided with a check valve that allows materials to enter the pump cylinder from the inner bottle body only
Implementation Method 3
a pump piston sheathing the pump valve and located inside the upper end of the pump cylinder
Data Source
AI summary
A pump cosmetic bottle includes a bottle body, a bottle cap and a pump mounted on the bottle body. The bottle body includes an inner bottle, an outer bottle sheathing the inner bottle, and a bottle shoulder sheathing the inner bottle and the outer bottle. The inner bottle includes an inner bottle body, and an inner bottle mouth connected on the upper end face of the inner bottle body and communicating with the inner bottle body. The outer diameter of the inner bottle body is greater than that of the inner bottle mouth. The bottle shoulder includes an inner shoulder sheathing the pump, and an outer shoulder of which an inner side face of the upper end is connected to the outer periphery of the inner shoulder and the lower end is connected to the outer side of the upper end of the outer bottle in a fixed manner.