Vehicle Door Drive Layout With Pivoting Coupling Support
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Solution Overview
Problem
Existing vehicle-opening/closing-body driving devices, such as side door opening/closing devices, often have complex structures and inefficient transmission of driving force due to the fixed position of the spindle shaft and pivotable coupling of the drive nut assembly, leading to operational limitations.
Innovation Solution
A vehicle-opening/closing-body driving device with a driving assembly housed in a casing, a coupling mechanism parallel to the pivoting locus plane, and a pivotable support structure perpendicular to the pivoting locus plane, allowing for a simple structure and high transmission efficiency of the driving force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spindle shaft position is fixed and the drive nut assembly is pivotably coupled, then the structure can accommodate door movement, but the structure becomes complex and transmission efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the support body pivotable relative to the housing through a pivoting shaft. This allows the support body to dynamically adjust its position during door opening/closing operations, maintaining optimal alignment between the output shaft and coupling mechanism while avoiding complex pivotable couplings on the drive nut assembly itself.
Solution Approach 2:
The patent segments the driving device into distinct functional modules: a housing containing the driving actuator, a support body holding the coupling mechanism, and a pivoting shaft connecting them. This segmentation allows each module to be optimized independently and simplifies the overall structure by separating the pivotable function from the drive train components.
2Reliability
If the coupling mechanism is arranged parallel to the pivoting locus plane, then transmission efficiency improves, but the structural configuration becomes more constrained
Solution Approach 1:
The patent resolves the spatial constraint by introducing a vertical dimension through the pivoting shaft arrangement. The pivoting shaft extends in the vertical direction, allowing the support body to pivot in a horizontal plane while maintaining the coupling mechanism's parallel arrangement to the pivoting locus plane. This dimensional separation enables both optimal transmission and structural adaptability.
Data Source
AI summary
Regarding a vehicle-opening/closing-body driving device comprising a driving assembly having a driving actuator, a casing housing the driving assembly and fixed inside either one of an opening/closing body and a vehicle body, and a coupling mechanism coupling the driving assembly with the other of the opening/closing body and the vehicle body, wherein an output shaft of the driving actuator and the coupling mechanism are arranged to be parallel on a vertical plane perpendicular to a pivoting locus plane of the opening/closing body, it is configured that the coupling mechanism is pivotably supported inside the casing by a pivoting shaft in a vertical direction perpendicular to the pivoting locus plane of the opening/closing body to make the coupling mechanism pivot with respect to the casing according to the opening/closing operation of the opening/closing body.