Hydraulic Pump Cover Latching for Sealing Under Slackening
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Solution Overview
Problem
Existing hydraulic pumps face challenges in assembly efficiency due to multiple components and potential slackening of connections, leading to suboptimal tightness and sealing.
Innovation Solution
A hydraulic pump design featuring a dual-function cover with detent connections and elastically deformable components, including detent tabs and fastening arms, ensures secure assembly and maintains prestress even after slackening, using deformation portions and clearances to facilitate assembly and ensure tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components are used to assemble the hydraulic pump, then the functionality and reliability are improved, but the assembly complexity and number of parts increase
Solution Approach 1:
The cover is designed to perform multiple functions simultaneously: it closes the pump housing (first function) and connects the pump module to the main housing (second function). This merging of functions reduces the number of separate components needed while maintaining connection reliability through integrated detent connections.
Solution Approach 2:
The cover is embodied as a multi-functional component that serves both as a closure for the pump housing and as a connector to the main housing. This universal component design simplifies the overall assembly by eliminating the need for separate closure and connection elements.
2Stability of the object's composition
If rigid detent connections are used, then the assembly stability is improved, but the tightness and sealing may deteriorate due to slackening
Solution Approach 1:
The detent connection incorporates a deformation portion that changes the mechanical parameters of the connection from rigid to elastically deformable. This allows the connection to maintain stable assembly while adapting to dimensional variations and maintaining sealing pressure through elastic prestress.
Solution Approach 2:
The detent connection is designed with elastic deformability, transforming the static rigid connection into a dynamic connection that can adapt to assembly variations. The elastic deformation allows the connection to maintain constant prestress and sealing force despite changes in assembly conditions.
3Reliability
If elastically deformable components are used, then the tightness and prestress maintenance are improved, but the structural complexity increases
Solution Approach 1:
Instead of making the entire cover elastically deformable, only specific local regions (the deformation portions at the detent connection areas) are designed with elastic deformability. This localized approach maintains tightness and prestress where needed while keeping the overall structure simple and manufacturable.
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 efficient assembly with few components and maintains desired tightness and sealing, even under slackening conditions, enhancing the reliability and durability of the hydraulic pump system.
Implementation Method 1
The deformation portion makes it possible to elastically prestress the detent connection, so that the desired tightness of the modules fastened to one another is achieved even after any slackening.
Implementation Method 2
In the component chain receptacle, cover, pump housing, main housing at least one seal elastically deformable in the mounting direction is provided. The seal, similarly to the elastically deformable fastening device, ensures that the necessary prestress force and sealing are maintained, even in the event of any slackening.
Data Source
AI summary
A hydraulic pump includes a pump module and a main housing, the pump module has a pump housing and a cover. A pump element is arranged in the pump housing and is connected to a rotor arranged outside the pump housing, and the cover is latched to the pump housing by a first detent connection. The main housing has a stator, within which the rotor is arranged, and the main housing is latched to the cover by a second detent connection.