Adjustable bed base with subframe for lift and tilt
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Solution Overview
Problem
Conventional adjustable bed bases lack vertical adjustability and the ability to incline or decline the articulated deck when it is flat, making them difficult for tall or short individuals and those with disabilities to enter or exit, and failing to accommodate health needs for inclined sleeping positions.
Innovation Solution
An adjustable bed base with a vertically adjustable frame and a subframe that can be tilted using motorized primary and secondary linear actuators, allowing the deck to be raised, lowered, inclined, or declined, with a stationary frame supported by adjustable legs and an articulated deck comprising hinged boards and braces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the frame is made stationary to ensure structural stability, then the bed base is simple and reliable, but tall or short persons and persons with disabilities have difficulty entering and exiting the bed
Solution Approach 1:
The bed base is divided into a stationary frame and a movable subframe. The stationary frame provides structural stability while the subframe with lift arms and wheels can be raised and lowered independently to facilitate easy entry and exit for users of varying heights and abilities.
Solution Approach 2:
The subframe is made dynamically adjustable through motorized lift arms that can raise and lower the subframe vertically. This dynamic capability allows the bed base to adapt to different user needs while maintaining a simple stationary frame structure.
2Adaptability or versatility
If the deck members are hinged to allow articulation, then the bed can provide inclined positions for comfort, but the deck cannot be inclined or declined when all members are flat and aligned
Solution Approach 1:
The patent introduces a new degree of freedom by allowing the entire subframe to tilt relative to the stationary frame. This enables the flat deck to be inclined or declined as a whole, adding vertical plane adjustment capability beyond the horizontal articulation of individual deck members.
Solution Approach 2:
The tilt mechanism combines the articulation of multiple deck members with the overall subframe inclination. When all deck members are flat, the subframe can still be tilted by the lift arms, merging the benefits of both localized articulation and global inclination.
3Adaptability or versatility
If the subframe is made movable with lift arms and actuators, then vertical adjustment and tilting are enabled, but the device complexity and number of components increase
Solution Approach 1:
The subframe structure serves multiple functions: it supports the articulated deck, provides vertical movement through lift arms, enables tilting relative to the stationary frame, and facilitates easy entry and exit. This multi-functionality reduces the need for separate mechanisms for each capability.
Solution Approach 2:
The lift arms are designed to move along the C-shaped channels of the stationary frame, using the frame structure itself as a guide and support. This self-guiding mechanism reduces the need for additional complex positioning systems while maintaining precise control.
Data Source
AI summary
An adjustable bed base has a subframe which may be raised and lowered relative to a stationary frame by primary linear actuators. A deck is attached to the subframe. The deck may be flat or fully articulated depending upon the position of secondary linear actuators which are a part of a subframe module. The subframe module may be secured to the stationary frame of the adjustable bed base. The deck may be inclined by extending one of the primary linear actuators more than the other regardless of the positions of the deck members.