Utility Vehicle Door With Replaceable Visual Portion
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Solution Overview
Problem
Conventional utility vehicle doors fail to effectively partition the upper half, leading to temperature regulation issues as hot air is retained, making it difficult to adjust the thermal environment, especially in winter when outside air enters from the upper portion.
Innovation Solution
A door design featuring a replaceable portion that can be detachably attached to the door body, allowing for visual recognition and adjustment of the thermal environment by using either a net or plate member, and an open-close portion that can be opened or closed to regulate the thermal environment according to outside conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the door is closed to retain hot air in the vehicle, then thermal insulation is improved, but the ability to visually recognize the outside and ventilate is worsened
Solution Approach 1:
The door is divided into multiple functional segments: a door body for thermal insulation, a replaceable portion for visual recognition and ventilation, and an open-close portion for thermal regulation. This segmentation allows each part to perform its specific function independently, resolving the contradiction between maintaining a closed insulated state and providing visual/ventilation access.
Solution Approach 2:
The door incorporates dynamic elements including a replaceable portion that can be detached and reattached, and an open-close portion that can be opened or closed as needed. These dynamic features allow the door to adapt its configuration based on whether visual recognition or ventilation is required, while maintaining thermal insulation when closed.
2Adaptability or versatility
If the door partitions only the lower half to allow upper air flow, then ventilation is improved, but thermal insulation is worsened due to hot air retention in the lower portion
Solution Approach 1:
The open-close portion provides dynamic control over the lower door opening, allowing it to be opened for ventilation when needed and closed for thermal insulation. This dynamic capability resolves the contradiction by enabling the user to switch between ventilation and insulation modes as conditions require.
Solution Approach 2:
Different portions of the door have different functions: the upper replaceable portion handles visual recognition and optional ventilation, while the lower open-close portion handles thermal regulation. This local differentiation of quality and function allows the door to simultaneously address both ventilation and thermal insulation requirements in different areas.
3Temperature
If a fixed solid door is used to prevent outside air entry, then thermal insulation is improved, but visual recognition and ventilation are worsened
Solution Approach 1:
The door is segmented into a fixed door body for insulation and a replaceable portion that can be removed to create openings for visual recognition and ventilation. This segmentation allows the solid insulated structure to coexist with openings for observation and air flow when needed.
Solution Approach 2:
The replaceable portion serves multiple functions: it enables visual recognition when attached, provides ventilation when removed or in mesh configuration, and maintains the insulated structure when present. This multi-functionality resolves the contradiction by making a single component capable of addressing multiple competing requirements.
Data Source
AI summary
A door of a utility vehicle includes a door body including a grip portion utilized for opening and closing the door, an attachment portion provided to the door body, and a replaceable portion detachably attached to the attachment portion and enabling visual recognition from inside to outside the vehicle.


