Adjustable Bed Base Suspension With Pivoting Stiffness Control
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Solution Overview
Problem
Conventional bed base suspension devices with modifiable stiffness often require significant effort to deform, reducing comfort due to reduced amplitude of deformation and increased stiffness, which can harm the impression of comfort provided.
Innovation Solution
A suspension device with adjustable stiffness featuring a movable member that pivots around an axis of rotation, allowing it to change positions and modulate stiffness by altering the elastic coupling between the upper and lower sections, providing different stiffness configurations through elastic deformation without requiring additional pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid stiffening member is housed between the lower section and upper section to increase stiffness, then the stiffness of the suspension device is improved, but the amplitude of deformation is substantially reduced
Solution Approach 1:
The patent applies a movable member that can change position between a first position (providing stiffening) and a second position (allowing greater deformation). This dynamic reconfiguration enables the suspension device to adapt its stiffness characteristics based on operational needs, resolving the contradiction between maintaining high stiffness and preserving deformation amplitude.
Solution Approach 2:
The patent changes the physical state or configuration of the stiffening element by making it movable between different positions. In the first position, the member provides maximum stiffening; in the second position, it allows greater deformation. This parameter change enables the system to overcome the fixed trade-off between stiffness and deformation amplitude.
2Strength
If a rigid stiffening member is used to increase stiffness, then the stiffness of the suspension device is improved, but significant effort is necessary to deform the device
Solution Approach 1:
By making the stiffening member movable between positions, the system dynamically adjusts its resistance to deformation. When the member is in the second position, it allows easier deformation with less force required, while still providing structural support when in the first position.
Solution Approach 2:
The patent changes the mechanical parameters of the stiffening element by altering its position and orientation. This parameter change allows the system to reduce the force required for deformation while maintaining the ability to provide high stiffness when needed.
3Strength
If a rigid stiffening member is housed between sections to modify stiffness, then the stiffness is increased, but the impression of comfort is harmed
Solution Approach 1:
The movable member allows the system to dynamically adjust between providing structural support and allowing comfortable deformation. By positioning the member in the second position during normal use, the device maintains a comfortable impression while still offering stiffening support when required.
Solution Approach 2:
The patent changes the configuration parameters of the stiffening element to allow it to provide comfort during normal operation while maintaining the capability to provide support when needed. This parameter adjustment resolves the contradiction between stiffness and comfort impression.
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
The device enhances comfort by allowing for adjustable stiffness, enabling a range of deformation amplitudes and resistance levels, thereby improving the overall impression of comfort and usability.
Implementation Method 1
the first elastic body which is configured to deform elastically when the movable member is moved from one position to another
Implementation Method 2
This movable member is capable of pivoting with respect to the suspension device around at least one first axis of rotation integral with the lower section
Data Source
Figure 1~2
Figure 3A~3B
Figure 3C~3D
AI summary
Suspension device (510, 510', 610, 710) for a bed base or seat, comprising: ● an upper section (512, 612, 712) provided with a platform (514, 614, 714) suitable for supporting a mattress; ● a lower section (520, 520', 620, 720) comprising means for attaching the suspension device to the bed base, said lower section being connected to the upper section by suspension means (630, 730); ● means for modifying the stiffness of the suspension device, comprising a movable member (540, 540', 640, 740) relative to the suspension device so as to be able to be moved at least between a first position and a second position to modify the stiffness of the suspension device. The moving member (540, 540', 640, 740) is provided with at least one first elastic body which is configured to deform elastically when the moving member is brought from one position to another.