Vehicle Driving Device Housing with Protrusion and Ribs
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Solution Overview
Problem
Existing driving devices for vehicles lack a robust and efficient mechanism for suspending and maintaining the motor unit, particularly in terms of stability and ease of attachment, due to unbalanced center of gravity and lack of structural rigidity.
Innovation Solution
The driving device incorporates a housing with a protrusion and circumferential ribs, featuring a female screw hole for eye bolt attachment, which improves stability and ease of suspension by aligning with the motor unit's center of gravity and enhancing structural rigidity through connection of the ribs to the protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a simple housing structure is used, then manufacturing cost is reduced, but structural rigidity and stability are insufficient
Solution Approach 1:
The housing is divided into multiple segments including a body housing, a cover, and multiple protrusions with circumferential ribs. This segmentation allows each part to be optimized independently for strength while maintaining overall structural integrity, resolving the contradiction between structural rigidity and manufacturing complexity.
Solution Approach 2:
Circumferential ribs are added to the protrusions, creating a three-dimensional reinforced structure. These ribs extend in the circumferential direction and connect to each other, forming a rigid framework that significantly enhances structural strength without requiring a completely complex housing design.
2Stability of the object's composition
If the center of gravity is not properly aligned, then the structure is simpler, but suspension stability deteriorates
Solution Approach 1:
The housing includes multiple protrusions positioned at specific locations with circumferential ribs, creating an asymmetric structure that strategically balances the center of gravity. This asymmetric configuration optimizes suspension stability by properly positioning the center of gravity relative to the suspension attachment points.
3Strength
If structural reinforcement is added, then strength is improved, but manufacturing precision requirements increase
Solution Approach 1:
The circumferential ribs are designed to extend in the circumferential direction and connect to form a framework structure. This three-dimensional configuration provides structural reinforcement that distributes stress evenly, allowing for robust strength enhancement while maintaining reasonable die casting precision requirements through optimized geometry.
Data Source
AI summary
According to one aspect of the present disclosure, a driving device is a driving device for rotating an axle of a vehicle and includes: a motor having a rotor rotating about a motor axis extending in a horizontal direction orthogonal to a vertical direction; a reduction gear connected to the rotor; a differential gear connected to the motor via the reduction gear; and a housing configured to house the motor, the reduction gear and the differential gear therein. The housing has a protrusion that protrudes upward in the vertical direction, and at least one circumferential rib that extends in a circumferential direction. The protrusion has a female screw hole into which an eye bolt can be tightened. At least one of the circumferential ribs is connected to the protrusion.