Cartridge Vane Pump Flat Spring Linkage Assembly
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Solution Overview
Problem
Existing cartridge vane pumps require special tools and jigs to achieve and release the sandwiched state between a cover member and a side member, making assembly and disassembly cumbersome.
Innovation Solution
Incorporating a flat spring, linkage wire, or linkage pin to link the body-side side plate and the cover member, allowing for easy attachment and detachment without the need for special tools, and accommodating these linkage elements within the pump's structure to reduce size and enhance assembly ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection rods and stoppers are used to maintain the sandwiched state, then the pump components are securely held between cover member and side member, but special tools and jigs are required for attachment and removal
Solution Approach 1:
The cartridge vane pump is designed with an integrated cartridge structure that can be easily inserted and removed as a single unit. The cartridge includes the rotor, cam ring, and vanes pre-assembled together, allowing the entire assembly to be self-contained and self-servicing without requiring external tools or jigs for attachment and removal.
Solution Approach 2:
The pump is divided into modular segments: a reusable pump body and a replaceable cartridge assembly. This segmentation allows the cartridge to be easily detached and replaced without affecting the pump body, eliminating the need for complex fastening mechanisms and special tools while maintaining secure holding through the cartridge's internal structure.
2Reliability
If traditional fastening methods are used, then the sandwiched state is maintained, but the structure becomes complex and requires special tools
Solution Approach 1:
The cartridge structure is designed to maintain its own sandwiched state through internal features such as the rotor fitting into the cam ring and the cam ring being retained by the cartridge housing. This self-maintaining design eliminates the need for additional fastening components and complex structural elements.
Solution Approach 2:
The complex fastening mechanisms and stoppers are extracted from the design, replacing them with a simplified cartridge insertion system. The essential function of maintaining the sandwiched state is achieved through the cartridge's inherent structural design rather than additional extracted components.
3Reliability
If multiple components are assembled together, then the pump functionality is complete, but assembly and disassembly become cumbersome
Solution Approach 1:
Multiple pump components (rotor, cam ring, vanes, and housing) are merged into a single integrated cartridge assembly. This merging allows all functional components to be handled as one unit during assembly and disassembly, greatly simplifying the process while maintaining complete pump functionality.
Solution Approach 2:
The pump system is segmented into two main parts: the pump body and the cartridge assembly. This segmentation allows the complex internal components to be pre-assembled into a compact cartridge unit, which can then be easily installed or removed as a single piece, reducing the complexity of field assembly and disassembly operations.
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
Facilitates easy transportation, attachment, and detachment of the vane pump while preventing disengagement due to vibrations, improving assembly and disassembly processes, and enhancing discharge performance by maintaining the pump components in a secure, leak-resistant configuration.
Implementation Method 1
Incorporating a flat spring, linkage wire, or linkage pin to link the body-side side plate and the cover member
Data Source
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AI summary
A cartridge vane pump (100) includes a rotor (20), a plurality of vanes (30), a cam ring (40), a body-side side plate (50) brought into contact with a first end surface (40b) of the cam ring (40), a cover member (60) brought into contact with a second end surface (40c) of the cam ring (40), the cover member (60) being attached to the body (70), and a flat spring (80) provided to extend between the body-side side plate (50) and the cover member (60) over an outer circumferential surface (40d) of the cam ring (40), the flat spring (80) being configured to link the body-side side plate (50) and the cover member (60).