Vehicle Door Handle Assembly Inversion for Reduced Cycle Time
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Solution Overview
Problem
The existing door structure for vehicle storage sections requires increased assembly time due to the need to flip the glovebox over during handle unit assembly, which complicates the process and prolongs the assembly time.
Innovation Solution
A door structure with a handle unit that includes a hole for handle placement, an engagement claw on the back-face side of the door panel or base, and an engagement hole that engages with the claw, allowing the handle unit to be assembled from the back-face side without flipping, along with rotational movement of hooks into anchors for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the base member of the handle unit is fixed to the vertical wall using screws from the back-face side of the fascia panel, then the quality of the external appearance at the design-face side is not detrimentally affected by the screws, but it is necessary to flip the glovebox over during assembly which increases assembly time
Solution Approach 1:
The patent inverts the conventional assembly approach by forming engagement claws on the door panel instead of on the handle unit base. This allows the handle unit to be assembled from the back-face side without needing to flip the door panel, as the engagement claws and engagement holes enable direct assembly from the accessible back-face side while maintaining appearance quality.
Solution Approach 2:
The patent segments the engagement mechanism into separate components: engagement claws formed on the door panel and engagement holes formed on the handle unit base. This segmentation allows the engagement features to be positioned optimally for appearance quality while enabling assembly from the back-face side without flipping the door panel.
2Shape
If the handle unit is inserted into the window section from the design-face side of the fascia panel and then fixed from the back-face side, then the screws remain hidden, but the assembly process requires flipping the glovebox which complicates the assembly process
Solution Approach 1:
The patent inverts the conventional approach by forming engagement claws on the door panel rather than on the handle unit. This inversion allows the entire assembly process to be completed from the back-face side without flipping the door panel, simplifying the assembly process while maintaining the hidden screw configuration for appearance quality.
Solution Approach 2:
The patent merges the positioning and fixing functions into a single engagement mechanism consisting of engagement claws and engagement holes. This integration allows the handle unit to be both positioned and secured in one continuous operation from the back-face side, eliminating the need to flip the door panel and reducing assembly complexity.
Data Source
AI summary
A hole for handle placement penetrates through an outer door, and a handle attached to a fascia face side of a base of a handle unit is placed in the hole in the outer door. An engagement claw is formed at a position on the back-face side of the outer door. An engagement hole to engage with the engagement claw penetrates the base of the handle unit. A pair of left and right hooks are formed at the base of the handle unit, and a pair of left and right hook anchors are formed to the back-face side of the outer door, with the pair of left and right hooks anchoring into the pair of left and right hook anchors.