Automotive Coolant Pump Housing Segmentation for Rotational Flexibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automotive coolant pumps face challenges in providing different rotational angles of the tangential coolant outlet without complex and expensive construction methods, necessitating various pump models for different customers.
Innovation Solution
A coolant pump design featuring separate pump and motor section housings with a bordering arrangement using a circular fixation bulge and ring, allowing for flexible rotational positioning and simple, cost-effective assembly, including a chamfer depression and tongue mechanism for secure fixation, and a separate sealing arrangement to ensure liquid-tight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a snap-mechanism is used to fix the pump section housing to the motor section housing, then the rotational position of the pump section housing can be varied with relatively little constructional effort, but the construction becomes complex and expensive
Solution Approach 1:
The pump housing is divided into two separate section housings (pump section housing and motor section housing) that can be independently positioned and assembled. This segmentation allows the pump section housing to be rotated to different angular positions relative to the motor section housing before assembly, enabling adaptability without requiring a complex adjustable mechanism.
Solution Approach 2:
The desired rotational position of the pump section housing is predetermined during the assembly process. The pump section housing is pre-positioned at the required angle relative to the motor section housing before the bordering arrangement is formed. This preliminary positioning eliminates the need for complex adjustment mechanisms during operation, as the correct orientation is established once during assembly.
2Adaptability or versatility
If different variations of coolant pump models are produced for different customers with different rotational angles, then customer-specific requirements are met, but production costs and device variety increase
Solution Approach 1:
A single standard model of coolant pump is produced with a pump section housing that can be assembled at different rotational angles to the motor section housing. The bordering arrangement design allows this universal pump to satisfy multiple customer requirements for different rotational angles without requiring separate customized pump models, thereby reducing production costs and simplifying manufacturing.
3Ease of manufacture
If a bordering arrangement with cold forming process is used to fix the section housings, then large mechanical tolerances can be used and production is cost-effective, but the sealing arrangement must be carefully positioned to avoid interference
Solution Approach 1:
The bordering arrangement and sealing arrangement are positioned at different axial locations along the pump housing. This spatial segmentation allows the bordering arrangement (which requires large tolerances due to cold forming) to be separated from the sealing arrangement, enabling each to be optimized independently without mutual interference.
Solution Approach 2:
The problem of potential interference between the bordering arrangement and sealing arrangement is solved by transitioning to a different spatial dimension. Instead of positioning both arrangements in the same axial region, the sealing arrangement is placed in a different axial zone, eliminating interference while maintaining the cost-effective cold forming process for the bordering arrangement.
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
Enables flexible and reliable fixation of the pump section housing to the motor section housing with large mechanical tolerances, reducing production costs and maintaining a liquid-tight seal, while allowing for easy adjustment of rotational angles without compromising the sealing integrity.
Implementation Method 1
The bordering arrangement is assembled and fixed to each other by a cold forming process step
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The invention refers to an automotive electrical coolant pump (10) comprising a pump section (12) with an pump wheel (40) and a motor section (14) with a motor rotor (52) and a motor stator (50). The pump housing comprises a pump section housing (42) and a separate motor section housing (44) which is fixed to the pump section housing (42). The pump section housing (42) comprises an axial coolant inlet (24) and a tangential coolant outlet (26). The fixation of the pump section housing (42) with the motor section housing (44) is provided by a bordering arrangement (20). The bordering arrangement (20) is defined by a circular fixation bulge (36) at the axial end of one section housing (42) and a circular bordering ring (34) at the axial end of the other section housing (44). The bordering ring (34) embraces the fixation bulge (36). The fixation bulge (36) is provided with at least one chamfer depression (37) and a bordering tongue (38) of the bordering ring (34) is projecting into the chamfer depression (37).