Fluid Pump Mounting Ring for Vibration Decoupling and Axial Fixing
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Solution Overview
Problem
Existing automotive fluid pump arrangements require complex assembly processes and additional fixation elements for reliable and cost-efficient vibration-decoupling mounting of the pump unit to a motor vehicle frame, leading to increased noise emission and assembly complexity.
Innovation Solution
A ring-shaped vibration-decoupling support part made of a soft elastomer, with a tensioned friction-enhancing longitudinal lip ring that provides a form-locked connection without additional fixing means, securing the pump unit in both axial directions through radial and axial support, allowing for simple assembly and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a force-locked connection is used to mount the pump unit to the vibration-decoupling body, then the mounting is simple, but the connection can only support relatively small axial forces
Solution Approach 1:
The patent combines the force-locked connection and form-locked connection into a single integrated mounting system. The vibration-decoupling body simultaneously provides both the force-locked engagement (through radial enclosure) and form-locked support (through axial stop surfaces), eliminating the need for separate fixation elements and achieving both simplicity and high axial force capacity.
Solution Approach 2:
The vibration-decoupling body is made of elastomeric material that combines flexibility for vibration decoupling with sufficient structural strength to support axial forces. This composite material approach allows the single component to provide both the force-locked connection simplicity and the form-locked connection axial force capacity.
2Reliability
If additional fixation elements are used to secure the pump unit axially, then the mounting is reliable, but the assembly complexity increases
Solution Approach 1:
The patent merges the functions of vibration decoupling, radial support, and axial fixation into a single vibration-decoupling body. The elastomeric body with integrated stop surfaces provides all mounting functions simultaneously, eliminating the need for separate fixation elements like clips or screws, thus achieving both reliability and simplicity.
Solution Approach 2:
The vibration-decoupling body serves multiple functions: it provides vibration decoupling through its elastomeric material, radial support through its ring-shaped structure, and axial fixation through its integrated stop surfaces. This multi-functional design eliminates the need for additional fixation elements while maintaining mounting reliability.
3Ease of manufacture
If the pump unit is directly mounted to the motor vehicle frame, then the assembly is simple, but vibrations are transferred causing high noise emission
Solution Approach 1:
The patent introduces a vibration-decoupling body as an intermediary between the pump unit and the motor vehicle frame. This elastomeric body acts as a mediator that transmits necessary forces while filtering out vibrations, thus reducing noise emission without significantly complicating the assembly process.
Solution Approach 2:
The vibration-decoupling body is made of elastomeric material that provides flexible mounting. This flexible material absorbs and dampens vibrations from the pump unit, preventing their transmission to the motor vehicle frame, thereby reducing noise emission while maintaining assembly simplicity.
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 solution achieves reliable vibration-decoupling and secure axial fixation of the pump unit, reducing noise emission and assembly complexity while eliminating the need for additional fixation elements, resulting in a cost-effective and efficient mounting system.
Implementation Method 1
The support part is made of a relatively soft and elastic material, for example made of rubber, silicone, SEBS, EPDM or any other elastomer, so that the vibration-decoupling support part can compensate vibrations of the motor vehicle frame
Implementation Method 2
The support part is made of a relatively soft and elastic material
Implementation Method 3
a tensioned friction-enhancing longitudinal lip ring that provides a form-locked connection without additional fixing means, securing the pump unit in both axial directions
Data Source
Figure 1a
Figure 1b
Figure 2a
AI summary
The invention is directed to an automotive fluid pump arrangement, in particular to an automotive fluid pump arrangement with a vibration-decoupling mounting device for mounting an automotive fluid pump unit onto a motor vehicle mounting structure. The automotive fluid pump arrangement (10) comprises a pump unit (15) and a mounting device (20) for supporting and mounting the pump unit (15). The mounting device (20) comprises a ring-shaped vibration-decoupling support part (22) radially enclosing and supporting the pump unit (15). The support part (22) is provided with an axial stop surface (25) cooperating with a corresponding axial pump unit stop surface (17) for axially stopping the pump unit in the axial mounting direction (M) and is provided with a mounting part (27) for attaching the mounting device (20) to a corresponding motor vehicle mounting structure (50), wherein the ring-shaped support part (22) is provided with a tensioned friction-enhancing longitudinal lip ring (30) surrounding the pump unit utricularly to frictionally lock the pump unit (15) in the axial dismounting direction (D). Thereby, the pump unit (15) is radially and axially fixed by the mounting device (20) without any additional fixing means.