Pump Cover Locking Ring Structure to Prevent Barrel Separation
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Solution Overview
Problem
Existing pumping devices, particularly the floor-standing type, face issues with the cover separating from the barrel during accidental falls, leading to liquid spills and potential damage, and have challenges in storing pipes and dispersing the force applied during pumping.
Innovation Solution
A pumping device design featuring a barrel, cover, pumping mechanism, positioning ring, and posts, where the positioning ring is detachably combined from two semi-ring bodies to securely connect the cover to the barrel, preventing separation and distributing force, and the posts are used to store pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cover is connected to the barrel using a simple connection structure, then the device complexity is reduced, but the connection reliability deteriorates causing the cover to separate during falls
Solution Approach 1:
The positioning ring is divided into two semi-ring bodies that can be separately installed on the cover and barrel respectively. This segmentation allows for easier assembly and disassembly while maintaining connection reliability through the distributed positioning portions that engage with corresponding features on the cover and barrel.
Solution Approach 2:
The positioning ring and posts are pre-configured with positioning portions that align with corresponding features on the cover and barrel before assembly. This preliminary configuration ensures that when the cover and barrel are connected, the positioning portions automatically engage to prevent separation during accidental falls.
2Reliability
If the cover is securely connected to the barrel to prevent separation, then the connection reliability is improved, but the device complexity increases due to additional positioning components
Solution Approach 1:
The positioning ring serves multiple functions: it positions the cover on the barrel, prevents axial separation, and provides mounting for the posts that further secure the connection. The first and second positioning portions work together with the posts to create a multi-functional positioning system that enhances reliability without requiring entirely separate components.
Solution Approach 2:
The two semi-ring bodies of the positioning ring are designed to be detachably combined, allowing them to be nested together to form a complete ring structure. This nested configuration enables easy assembly and disassembly while maintaining the structural integrity needed for reliable connection during operation and accidental falls.
3Device complexity
If force is concentrated on a single point during pumping, then the pumping mechanism is simpler, but the cover may detach due to excessive localized force
Solution Approach 1:
The positioning portions are distributed at multiple locations around the positioning ring rather than concentrated at a single point. This segmentation of the force application points distributes the pumping forces across multiple engagement points between the cover and barrel, preventing excessive localized stress that could cause detachment while maintaining a relatively simple pumping mechanism.
4Device complexity
If pipes are not stored in the device, then the device complexity is reduced, but the pipes become difficult to store and may be misplaced
Solution Approach 1:
The posts that serve the primary function of securing the positioning ring to the barrel are also utilized for storing pipes. The posts extend outward and can receive and hold pipes in a vertical orientation, providing a built-in storage solution that eliminates the need for separate pipe storage structures while maintaining ease of pipe access and organization.
Data Source
AI summary
The pumping device includes a barrel, a cover, a pumping mechanism, a positioning ring, and plural posts. The barrel has plural first positioning portions extending upward near a bottom thereof. The cover is disposed on the barrel to selectively close the barrel. The pumping mechanism is disposed on the cover for pumping liquid in the receiving space outward or pumping liquid outside into the receiving space. The positioning ring is detachably combined by two semi-ring bodies and is sleeved onto the cover and the barrel to position the cover on the barrel. The positioning ring has plural second positioning portions. Each of the posts connects the positioning ring and the bottom of the barrel therebetween. Each post is detachably connected to one of the first positioning portions and one of the second positioning portions therebetween so that the two semi-ring bodies are unable to separate freely.