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

VSEngineering 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

Engineering Contradiction:
Improvethermal insulationVSAvoidvisual recognition and ventilation capability
Core Design Contradiction:
TemperatureVSAdaptability or versatility

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #15Dynamics

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

Engineering Contradiction:
Improveventilation capabilityVSAvoidthermal insulation
Core Design Contradiction:
Adaptability or versatilityVSTemperature

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.

Inventive Principle:
Principle #15Dynamics

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.

Inventive Principle:
Principle #3Local quality

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

Engineering Contradiction:
Improvethermal insulationVSAvoidvisual recognition and ventilation capability
Core Design Contradiction:
TemperatureVSAdaptability or versatility

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS9789753B2Door of utility vehicle and utility vehicle with the door
Publication Date: 2017.10.17 KAWASAKI MOTORS LTD
  • US9789753B2 patent drawing
  • US9789753B2 patent drawing
  • US9789753B2 patent drawing

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.