Sliding Door Motor Assembly for Serration Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The attachment of the motor unit in existing vehicle structures with sliding doors is challenging due to the serration shaft and hole alignment difficulty, leading to poor workability and increased manufacturing costs.
Innovation Solution
A vehicle structure with a sliding door operation device that includes a motor unit attached to the inner side of the vehicle compartment, utilizing a rotation operation unit to align and fit the serration shaft and hole through guide portions, facilitating smooth attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor unit is attached from the inner side of the vehicle compartment, then the motor unit can be installed on the inner side of the side portion, but the serration shaft and hole alignment becomes difficult due to the distance from the attachment position
Solution Approach 1:
The motor unit is preliminarily positioned on the inner side of the vehicle compartment before the final attachment. The rotation operation unit enables the motor unit to rotate about the serration shaft center, allowing the serration shaft and hole to be aligned properly before securing the motor unit in its final position. This preliminary positioning and rotation capability resolves the alignment difficulty caused by the distance from the attachment position.
2Device complexity
If the serration shaft portion and serration hole are fitted directly without rotation assistance, then the structure remains simple, but the attachment workability deteriorates due to misalignment
Solution Approach 1:
The rotation operation unit acts as an intermediary mechanism between the motor unit and the driven rotary member. It provides the necessary rotation capability to align the serration shaft and hole during attachment, making the fitting process easier without significantly complicating the overall structure. The rotation operation unit mediates the alignment process that would otherwise be difficult due to the positioning constraints.
3Shape
If the motor unit is positioned far from the serration hole, then the motor unit can be mounted on the inner side of the vehicle compartment, but the fitting process becomes difficult
Solution Approach 1:
The rotation operation unit introduces dynamic capability to the motor unit positioning process. The motor unit can rotate about the serration shaft center during the attachment process, allowing the serration shaft and hole to be aligned precisely even when the motor unit is positioned far from the driven rotary member on the inner side of the vehicle compartment. This dynamic rotation capability ensures fitting precision despite the spatial arrangement constraints.
Data Source
AI summary
A vehicle structure includes a sliding door operation device configured to move a sliding door on a side portion of a vehicle. The device includes a motor unit and a moving member operating mechanism portion including a belt or a wire-shaped moving member coupled to the sliding door and a driven rotary member that receives a rotational driving force from the motor unit. The motor unit and the driven rotary member are provided with a serration shaft portion and a serration hole that are fitted to each other. The vehicle structure further includes a rotation operation unit configured to rotate the motor unit about centers of the serration shaft portion and the serration hole when the motor unit is pushed toward the driven rotary member to fit the serration shaft portion and the serration hole to each other.