Electric Pump Housing Hook Structure for Elastic Member Retention
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Solution Overview
Problem
Conventional electric pumps face issues with elastic members detaching easily and high housing formation costs due to multiple protrusions.
Innovation Solution
An electric pump design featuring a pump body with a housing that includes an elastic member arrangement portion with a protrusion having a pillar and fastening portion, and an elastic member with holes at its ends to engage with the protrusion, preventing easy detachment and reducing housing formation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple protrusions are provided on the housing to secure the elastic member, then the elastic member is less likely to detach, but the housing formation cost increases
Solution Approach 1:
The single protrusion is segmented into two functional parts: a pillar portion for basic support and a fastening portion with a hook part for secure retention. This segmentation allows the protrusion to provide multiple securing functions while maintaining cost-effectiveness by using only one protrusion structure.
Solution Approach 2:
The fastening portion features an asymmetric hook part that protrudes in the circumferential direction, creating a one-way locking mechanism. This asymmetric design prevents the elastic member from detaching in the unwrapping direction while allowing easy installation in the wrapping direction, achieving secure retention without requiring multiple symmetric protrusions.
2Ease of manufacture
If a simple protrusion is used on the housing, then the housing formation cost is reduced, but the elastic member becomes easy to detach
Solution Approach 1:
The pillar portion and fastening portion are merged into a single integrated protrusion structure formed from the housing. This merging reduces the total number of components and simplifies manufacturing while the fastening portion's hook part provides enhanced retention capability beyond what a simple protrusion could offer.
Solution Approach 2:
The fastening portion extends in the circumferential direction (tangential dimension) rather than only radially outward. This dimensional change creates a hook part that engages with the elastic member in a different spatial orientation, providing superior retention without increasing radial complexity or requiring multiple protrusions.
3Ease of operation
If the elastic member is wrapped around the housing without engagement features, then the installation is simple, but the elastic member detaches easily
Solution Approach 1:
The protrusion with its hook part is pre-formed on the housing before the elastic member is installed. This preliminary action creates a ready-to-eng-age feature that guides the elastic member into the correct position and automatically secures it during the wrapping process, maintaining installation simplicity while ensuring reliable retention.
Solution Approach 2:
The protrusion acts as an intermediary structure between the housing and the elastic member. The hook part of the protrusion mediates the connection by engaging with the elastic member's opening, providing a secure mechanical link that prevents detachment while allowing straightforward installation without complex fastening procedures.
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 effectively prevents the elastic member from detaching and reduces the cost of housing formation, ensuring a secure and cost-effective electric pump solution.
Implementation Method 1
an elastic member arranged on an outer circumferential surface of the housing
Data Source
AI summary
Provided is an electric pump having an elastic member that is not easily detached, and the housing formation cost is not high. The electric pump includes a pump body with a housing and an elastic member arranged on an outer circumferential surface of the housing. An elastic member arrangement portion is provided on the outer circumferential surface. A protrusion is provided on the elastic member arrangement portion. The protrusion includes a pillar portion and a fastening portion extending from the pillar portion. The fastening portion has a hook part. The elastic member has holes in two opposite ends, and the holes are engaged with the protrusion. The two opposite ends overlap with each.