Vehicle Door Control Device Integration Reduces Projection Area
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Solution Overview
Problem
Conventional automatic opening/closing apparatuses for vehicles are large due to separate control devices and increased component counts, leading to increased costs and space requirements.
Innovation Solution
The control device is integrated into the main body case, overlapping with the tensioner mechanism, and the control substrate is housed within a substrate case fixed to the main body case, eliminating the need for external harnesses and reducing the overall size and component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control device is provided separately from the driving unit, then the control device can be independently positioned, but the projection area of the entire apparatus is increased and the apparatus becomes larger
Solution Approach 1:
The control device is integrated into the driving unit by mounting it on the driving unit's bracket rather than providing it as a separate component. This merging eliminates the need for independent positioning of the control device while reducing the overall projection area of the apparatus.
2Ease of operation
If the control device is provided separately from the driving unit, then the control device can be independently positioned, but the number of components is increased and cost rises
Solution Approach 1:
The control device is merged with the driving unit as a single integrated component mounted on the bracket. This eliminates separate substrate cases, external harnesses, and connection components, thereby reducing the total number of parts and lowering manufacturing cost.
3Ease of manufacture
If the control device is disposed separately with a substrate case, then the control substrate can be accommodated separately, but the projection area is increased
Solution Approach 1:
The control substrate is mounted directly on the driving unit's bracket alongside the motor, eliminating the need for a separate substrate case. This integration maintains ease of manufacture through modular mounting while significantly reducing the projection area of the apparatus.
4Ease of manufacture
If external harnesses are provided for connecting control device and driving unit, then the connections can be made externally, but the component count increases and cost rises
Solution Approach 1:
The control device and driving unit are merged into a single integrated assembly mounted on the bracket, eliminating the need for external harnesses and connection components. This reduces the total component count and lowers cost while maintaining ease of assembly through modular design.
Data Source
AI summary
An automatic opening/closing apparatus for vehicle is downsized, and cost of the automatic opening/closing apparatus is reduced by reducing the number of its components. A driving drum is rotatably accommodated in a main body case of a driving unit, and one ends of cables are connected to a sliding door and the other ends are wound around the driving drum. An electric motor is attached to the main body case, and the driving drum is driven for rotation. A tensioner mechanism applying a predetermined tension to the cables is accommodated in the main body case. A control device, including a control substrate and a substrate case for accommodating the control substrate, is disposed to be overlapped on an axial-directional side of the driving drum to a portion of the main body case for accommodating the tensioner mechanism, whereby an operation of the electric motor is controlled by the control device.