Pump Assembly Rotation Prevention Structure
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Solution Overview
Problem
Conventional pump assemblies with internal rotation prevention structures face challenges when using bellows-type elastic members, as the varying internal volume can cause collisions with the rotation prevention structure, and the cover mechanism is cumbersome and prone to loss, leading to unintended discharge.
Innovation Solution
A pump assembly with rotation prevention structures formed on the outer peripheral surface of the shoulder part and inner peripheral surface of the head part, including protrusions and grooves, which prevent rotation without collision and allows for convenient use and storage by maintaining the head part in a non-pressurized state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rotation prevention structures are formed inside the pump assembly, then rotation of the head part can be prevented, but the elastic member collides with the rotation prevention structure when internal volume varies
Solution Approach 1:
The rotation prevention structure is extracted from the internal space of the pump assembly and relocated to the outer peripheral surface of the shoulder part. This removes the conflict between the rotation prevention structure and the bellows-type elastic member, allowing the elastic member to expand and contract freely without collision while still preventing rotation through the protrusions and grooves on the shoulder part and head part.
2Reliability
If a cover is used to seal the pump part, then contamination can be prevented, but opening and closing is cumbersome and the cover can be lost
Solution Approach 1:
The sealing function is merged with the pump assembly structure itself. The pump assembly is designed to be coupled directly to the upper portion of the container body, forming an integrated sealed structure. This eliminates the need for a separate removable cover, maintaining contamination protection while improving ease of operation and preventing cover loss.
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
Prevents rotation of the shoulder and head parts without collision, enhances user convenience, and allows for easy conversion between pressurized and non-pressurized states, reducing the risk of unintended discharge and improving storage convenience.
Implementation Method 1
an elastic member provided between the stem and the sealing part to provide elasticity from the sealing part to the stem
Data Source
AI summary
A pump assembly according to an embodiment of the present invention is provided. The pump assembly coupled to a container part accommodating contents, so as to discharge the contents, may include: a pump part; a shoulder part of which one side is coupled to the container part and the other side is coupled to the pump part so as to couple the pump part to the container part; and a head part coupled to the upper end of the shoulder part so as to eject the contents in response to pressing by a user.