Adjustable Bed Base Suspension for Stiffness Without Harder Deformation
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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 limited amplitude of deformation and increased stiffness, which compromises the impression of comfort.
Innovation Solution
A suspension device with an elastically deformable moving member that modulates stiffness by adopting different configurations, allowing for varying stiffness values (R1, R2, and R3) depending on the position of the movable member, enabling adjustable comfort curves through elastic couplings and displacement capacities.
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 the dynamics principle by replacing the rigid stiffening member with a movable member that can change its position and configuration. This movable member has different positions (first position, second position, third position) that correspond to different stiffness values (R1, R2, R3). The movable member can move between these positions to dynamically adjust the stiffness of the suspension device, allowing both high stiffness when needed and large deformation amplitude when comfort is prioritized, thus resolving the contradiction 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, harming comfort impression
Solution Approach 1:
The movable member with multiple positions allows the suspension device to offer different resistance levels (stiffness values R1, R2, R3) depending on the selected position. This dynamic adjustment capability enables the device to provide high stiffness when support is needed while allowing easier deformation when comfort is prioritized, resolving the contradiction between stiffness and deformation effort.
Solution Approach 2:
The patent changes the stiffness parameter of the suspension device by moving the movable member between different positions. Each position corresponds to a specific stiffness value (R1 for first position, R2 for second position, R3 for third position), allowing the stiffness parameter to be adjusted according to comfort requirements, thus resolving the contradiction between high stiffness and low deformation effort.
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 provides improved comfort by allowing for adjustable stiffness, enabling greater deformation amplitude and reduced effort required for pressure application, thereby enhancing the overall comfort experience.
Implementation Method 1
the first elastic body can adopt a first configuration capable of elastically deforming to exert a restoring force with a first stiffness R1 and achieve an elastic coupling between the sections upper and lower with said first stiffness R1
Implementation Method 2
the suspension means may have a so-called 'suspension' stiffness Rs when pressure is applied to the suspension device, and the suspension means and the movable member may be configured so that said stiffness of suspension Rs does not vary when the moving member is moved from one position to another
Data Source
Figure 1~2
Figure 3A~3B
Figure 3C~3D
AI summary
The invention relates to a suspension device (10,10', 10B, 10C, 110,210, 310, 410, 510, 510') for a bed base or seat, comprising: • an upper section (12,12B, 12C, 112,212, 312, 412, 512) provided with a platform (14,14',114,214) suitable for supporting a mattress; • a lower section (20,20', 20B, 20C, 120, 220, 320, 420,520) comprising means for fixing the suspension device to the bed base, said lower section being connected to the upper section by suspension means (30,130,230); • means for modifying the stiffness of the suspension device comprising a movable part (32, 32', 32B, 32C, 132, 132', 232, 332, 432, 540, 540'), the movable part being provided with at least one first elastic body.