Trunk Lid Visual Window for Rear Visibility and Capacity
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Solution Overview
Problem
In sedan vehicles, installing large-sized items behind the rear seat occupies front trunk space, and increasing trunk lid height to accommodate them narrows the rear visual field due to the design constraints and standards.
Innovation Solution
A structure featuring a rear glass window inclined downward, a trunk compartment with a hinged trunk lid, and a visual window on the trunk lid's rear wall, along with a visual-field control device using a film that varies transparency based on the angle, allowing a wide rear visual field while increasing trunk compartment capacity without narrowing it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the height of the trunk lid is increased to provide a desired height of the trunk compartment, then the capacity of the trunk compartment is improved, but the vertical width of the rear glass window is decreased which narrows the rear visual field
Solution Approach 1:
The patent adds a visual window to the rear wall of the trunk lid, introducing a new viewing dimension. This allows the rear visual field to be observed through the trunk lid structure itself rather than relying solely on the rear glass window, thereby resolving the contradiction between increased trunk lid height and maintained visual field width.
2Volume of stationary object
If a large-sized part such as a tank or a cylinder is installed on the back side of a rear seat, then the trunk compartment capacity is improved, but the overhang on the back side of the vehicle body or the width of the vehicle needs to be enlarged which may be difficult due to design or applied standards
Solution Approach 1:
The patent utilizes the vertical dimension by adding a visual window to the rear wall of the trunk lid, allowing the trunk lid to be raised higher without compromising the rear visual field. This enables increased trunk compartment capacity while maintaining the original vehicle dimensions and overhang.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables a large rear visual field and increased trunk compartment capacity by providing a visual window on the trunk lid and partition wall, preventing the compartment from being observed from outside while maintaining the rear visual field, using a visual-field control film to maintain opacity at undesired angles.
Implementation Method 1
a visual-field control device (e.g., a visual-field control panel 10 in the embodiments) for permitting observation of the field on the back side of the vehicle body from the interior of the vehicle and for preventing the trunk compartment from being observed from the back side of the vehicle body may be provided at the visual window
Data Source
AI summary
A structure of a rear part in a vehicle body. A rear glass window is provided at a rear end part of a roof of the vehicle, and the rear glass window is inclined downward toward the back of the vehicle. A trunk compartment is formed from a part below an attachment part of the rear glass window to a rear end part of the vehicle body. A trunk lid is attached to a lower edge of the attachment part of the rear glass window in a manner such that the trunk lid can be opened and closed freely. A visual window for observing a field on the back side of the vehicle body is provided in a wall of the trunk lid, the wall being positioned on the back side of the vehicle body. A partition wall having an interior window may be provided below the rear glass window.