Electric Vacuum Pump Two-Point Mounting
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Solution Overview
Problem
Existing electric vacuum pumps require a complex and space-intensive three-point support for horizontal installation, which is not feasible in limited spatial conditions, particularly in vehicle engine compartments.
Innovation Solution
The vacuum pump is designed for a horizontal arrangement with a center of gravity on a connection axis between two mounting points, eliminating gravity moments and allowing a two-point installation, with a flange part and offset receiving formations guiding the center of gravity into this axis, using rubber elements and screw elements for secure placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a three-point support is used for horizontal installation of the vacuum pump, then the pump can be stably supported, but the mounting element becomes complex and space-intensive
Solution Approach 1:
The invention extracts the third mounting point from the support system by positioning the center of gravity on the connection axis between two mounting points. This eliminates the need for a third support point while maintaining stability, as gravity moments no longer act on the mounting points when the center of gravity lies on the connection axis between them.
Solution Approach 2:
The invention changes the spatial arrangement by positioning the center of gravity on the connection axis between two mounting points rather than requiring a triangular three-point configuration. This dimensional repositioning allows two-point mounting to achieve the stability traditionally requiring three points.
2Reliability
If a three-point support is used for horizontal installation, then the pump is properly supported, but the installation space increases
Solution Approach 1:
The third mounting point is extracted from the support system. By positioning the center of gravity on the connection axis between two mounting points, the invention eliminates the need for a third support point, thereby reducing the installation space required while maintaining proper support.
Solution Approach 2:
The spatial configuration is changed by positioning the center of gravity on the connection axis between two mounting points. This dimensional change allows the vacuum pump to be properly supported with only two mounting points, reducing the area occupied by the mounting element in the installation space.
3Device complexity
If the center of gravity is positioned on the connection axis between two mounting points, then the mounting element is simplified, but the receiving formations must be offset towards the motor part
Solution Approach 1:
The invention introduces asymmetry in the position of the receiving formations by offsetting them towards the motor part along the connection axis. This asymmetric positioning is necessary to locate the center of gravity on the connection axis between the two mounting points, thereby simplifying the mounting element design while accommodating the structural requirements of the vacuum pump.
4Weight of stationary object
If two mounting points are used instead of three, then the mounting element weight is reduced, but the vacuum pump must be precisely positioned horizontally
Solution Approach 1:
The third mounting point is removed from the system, reducing the mounting element weight. The center of gravity is positioned on the connection axis between the two remaining mounting points, which eliminates gravity moments and reduces the precision requirements for horizontal positioning compared to a three-point system.
Data Source
AI summary
An arrangement of an electric vacuum pump, for example, in a vehicle, wherein a mounting element is provided on which the vacuum pump is installed, and wherein the vacuum pump comprises a pump chamber part and a motor part, and wherein a longitudinal axis extends through the pump chamber part and the motor part. According to the invention, the vacuum pump has a horizontal arrangement with respect to a gravitational direction, wherein the installation of the vacuum pump on the mounting element is limited to two mounting points, and wherein a center of gravity of the vacuum pump lies on a connection axis between the two mounting points.