Vehicle Seat Air Intake Layout for Dust-Free Blower Ventilation
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Solution Overview
Problem
Existing vehicle seat blower designs that draw outside air through the seat cover are prone to dirt and dust accumulation, compromising seat appearance and performance, especially when a visible air supply port is required on the back board.
Innovation Solution
Incorporating a supply portion within the lower band member that communicates with the seat back, allowing outside air to be drawn in discreetly and supplied to the blower, maintaining seat aesthetics and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If outside air is supplied through the seat cover, then the blower can draw in air, but dirt and dust adhere to the back of the seat and seat appearance deteriorates
Solution Approach 1:
The air supply port is relocated from the visible back surface of the seat to the lower band member at the bottom edge of the seat back. This spatial relocation moves the air intake function to a different dimension (the lower perimeter area), allowing air supply while keeping the back surface clean and aesthetically pleasing.
Solution Approach 2:
The lower band member serves as an intermediary structure that houses the air supply port. This intermediate component acts as a mediator between the need for air supply and the requirement for seat aesthetic, allowing the blower to draw air without directly exposing the air intake on the visible seat surface.
2Ease of operation
If a supply port is provided on the back board, then outside air can be supplied to the blower, but the supply port is plainly visible and seat performance diminishes
Solution Approach 1:
The air supply function is moved from the vertical back board surface to the horizontal lower band member at the bottom edge. This dimensional shift relocates the supply port to a less visible area while maintaining its functional effectiveness for air supply.
Solution Approach 2:
The lower band member is designed with a specific local quality of being a rigid, planar structure that can stably hold the supply port. This localized structural characteristic ensures the supply port is firmly positioned in an aesthetically acceptable location without compromising overall seat appearance.
3Stability of the object's composition
If the lower band member is made rigid, then the supply portion can be stably attached, but manufacturing complexity increases
Solution Approach 1:
The lower band member is designed with a planar shape and increased rigidity through parameter changes in its structural properties. This parameter optimization provides stable attachment for the supply portion while maintaining manufacturability through simplified geometric form.
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
This design effectively supplies outside air to the blower while minimizing air intake through the seat cover, preserving the seat's appearance and performance by positioning the supply portion in a non-obtrusive manner.
Implementation Method 1
the blower includes a centrifugal blower mechanism (a mechanism that blows air in the centrifugal direction while drawing in outside air from the axial direction of the apparatus)
Data Source
AI summary
A vehicle seat includes a seat cushion, a seat back that is connected to the seat cushion in a manner so as to be reclined and raised with respect to the seat cushion, a lower band member that covers a connecting portion of the seat cushion and the seat back, and a supply portion provided in the lower band member. The seat back includes a cushion that forms a contour of a seat, a cover, and a blower arranged inside the seat back. Air blown from the blower is blown toward a sitting side of the seat back via a flow path portion of the cushion, while outside air is supplied to the blower. The supply portion communicates an inside of the seat back with an outside of the seat back, and outside air taken in from the supply portion is supplied to the blower.