Vehicle Door Trim Recess for Manual Window Knob
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Solution Overview
Problem
In vehicles with manually operated window glass, setting the lower limit position too low impairs operationality due to insufficient space between the knob and door trim, while setting it too high reduces the opening area, and providing a recess in the door trim to address this issue risks exposing the belt molding, compromising the vehicle's design.
Innovation Solution
A vehicle design featuring a recess in the door trim to accommodate the knob at the lower limit position of the window glass, with a wall surface extending upward to conceal the belt molding, ensuring both functionality and aesthetics are maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the lower limit position of the window glass is set to be low, then the area by which the opening of the window frame is opened can be made large, but there is such a risk that a sufficient space cannot be left between the knob and the door trim
Solution Approach 1:
The door trim is designed with a recess at a specific location where the knob comes close, creating a localized space that accommodates the knob without compromising the overall opening area. This local modification allows the window glass to be positioned lower while maintaining sufficient space for user operation.
Solution Approach 2:
Instead of increasing the vertical distance between the knob and door trim, the invention introduces a horizontal dimension by creating a recess in the door trim. This recess provides the necessary space for the knob by utilizing the depth dimension of the door trim rather than relying solely on vertical spacing.
2Ease of operation
If a recess is provided in the door trim to accommodate the knob, then a necessary space can be left between the knob and the door trim, but there is such a risk that the belt molding placed outward of the door trim might be exposed
Solution Approach 1:
The wall surface is provided at a specific location where the belt molding might be visible through the recess. This localized feature selectively covers only the necessary area to prevent exposure of the belt molding while maintaining the recess functionality for knob accommodation.
Solution Approach 2:
The wall surface acts as an intermediary element between the recess and the belt molding. It prevents the belt molding from being exposed through the recess while not interfering with the space available for the knob, thus mediating between the operationality and design property requirements.
3Ease of operation
If the lower limit position of the window glass is set to be high, then the space between the knob and the door trim can be made large, but the area by which the opening of the window frame is opened is reduced
Solution Approach 1:
The recess is provided locally in the door trim at the position where the knob comes close, creating space for operationality without requiring the entire door trim to be positioned farther from the window glass. This allows the window glass to be positioned lower, maximizing the opening area.
Solution Approach 2:
The invention utilizes the depth dimension of the door trim by creating a recess, rather than relying on increasing the vertical distance between the door trim and the window glass. This enables the window glass to achieve a lower position for larger opening area while maintaining sufficient operational space.
Data Source
AI summary
A vehicle described in the present specification is configured such that a door includes an outer panel, a door trim, window glass configured to be manually raised and lowered, a belt molding, and a knob. The window glass is supported movably between an upper limit position at which the window glass closes an opening of a window frame and a lower limit position at which the window glass opens the opening of the window frame. The knob is configured to be gripped by a user who operates the window glass. The door trim includes a recess configured to face the knob and form a space when the window glass is placed at the lower limit position, the space being formed to receive a hand of the user, the hand gripping the knob.