Seat comprising a back cushion adjustable in height
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Solution Overview
Problem
Existing seats struggle to combine the comfort of traditional relaxing seats with the stylish, low back design of contemporary seats, as the mechanical and electrical components required for adjustable back cushions cannot be easily integrated into a seat with a low back due to space constraints.
Innovation Solution
A seat design featuring a motor-driven driving mechanism and double guidance system that allows the back cushion to adjust between a low and high position, with the high position being at least 10 cm higher than the low position, using guides and guiding blocks for smooth movement and support, while maintaining a sleek appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a high back cushion is used to provide comfort and support, then the comfort function is improved, but the aesthetic appearance deteriorates due to bulky appearance
Solution Approach 1:
The back cushion is designed to be dynamically adjustable between a low position (for aesthetic appearance) and a high position (for comfort). The motor-driven mechanism allows the cushion to move vertically, enabling the user to switch between comfort and style based on needs, thus resolving the contradiction between fixed comfort and fixed aesthetics.
Solution Approach 2:
The back cushion is separated from the seat cushion through a recess design, allowing independent adjustment of the back cushion position. This segmentation enables the back cushion to be raised or lowered without affecting the seat cushion, providing flexibility to achieve both aesthetic and comfort requirements.
2Shape
If a low back cushion design is used to achieve contemporary aesthetic appearance, then the aesthetic appearance is improved, but the comfort function deteriorates due to insufficient back support
Solution Approach 1:
The motor-driven mechanism enables the back cushion to be dynamically adjusted from a low position (aesthetic) to a high position (comfort). This dynamic capability allows the seat to transform from a purely aesthetic low-back design to a comfortable high-back design when needed, resolving the contradiction between fixed aesthetics and comfort.
3Ease of operation
If traditional mechanical components are installed to enable back cushion adjustment, then the comfort function is improved, but the device complexity increases and space requirements worsen
Solution Approach 1:
The patent replaces traditional complex mechanical adjustment mechanisms with a motor-driven system. The motor (M2) directly drives the back cushion's vertical movement through a simplified transmission system, reducing mechanical complexity while enabling smooth, powered adjustment between positions.
Solution Approach 2:
The back cushion adjustment is achieved by moving the cushion vertically within a recess space, utilizing the vertical dimension rather than requiring lateral space for mechanical components. This dimensional approach allows compact integration of the adjustment mechanism within the seat structure.
4Adaptability or versatility
If mechanical and electrical components are installed for back cushion movement, then the adjustable position function is improved, but the space requirements worsen due to insufficient space behind the back cushion
Solution Approach 1:
The back cushion is designed to nest within a recess in the seat cushion when in the low position. The motor-driven mechanism and guiding components are integrated within the back rest structure and recess space, allowing the adjustment mechanism to be nested within the existing seat geometry without requiring additional external space.
Solution Approach 2:
The adjustment mechanism utilizes the vertical dimension within the recess space to accommodate the motor and guiding components. By orienting the mechanism vertically rather than horizontally, the design fits within the limited space behind the back cushion while still providing full adjustment capability.
Data Source
Figure 1.1~1.2
Figure 1.3~2.1
Figure 2.2~2.3
AI summary
The present invention relates to a seat, comprising a seat cushion (12), a back cushion (14) and a back rest (13), mounted on a base element (11), whereby the back cushion is adaptable between a low and a high position, the position of the back cushion in any position between the low and the high position is adjustable by the user by means of a motor-driven driving mechanism (M2) and a double guidance mechanism, the high position of the back rest is at least 10 cm higher than the low position and the double guidance mechanism comprises two guides (G1, G2), mounted on the front side of the back rest (13) and four guiding blocks (GB1, GB2, GB3 and GB4), two for the guidance of each guide, mounted on the back side of the back rest (14).