Moving Bed Frame Segmentation to Reduce Noise and Structural Damage
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Solution Overview
Problem
Existing moving beds with separate fixed and longitudinally moving parts face challenges in supporting action and reaction forces, leading to noise and structural issues in wooden bed frames, particularly with the installation of drive motors and rollers.
Innovation Solution
A moving bed design featuring a stationary fixed frame and a longitudinally movable frame, supported by a controllable motor drive and rollers, with metallic profiles for stability and ease of manufacturing, allowing for smooth sinusoidal movements without noise or structural damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate fixed and longitudinally moving bed parts are used with a drive motor, then sinusoidal movements are achieved that positively influence musculature, but action and reaction forces cause noise and structural issues in wooden bed frames
Solution Approach 1:
The bed frame is divided into a fixed bed frame part and a movable bed frame part. The drive motor is mounted on the fixed part and drives the movable part through a drive shaft, separating the force-generating component from the force-affected wooden structure. This segmentation prevents action and reaction forces from being transmitted to the wooden bed frame, eliminating noise and structural damage while preserving the therapeutic sinusoidal movement function.
2Ease of operation
If rollers are attached to side parts of wooden bed frames to support the moving bed part, then longitudinal movement is enabled, but the wooden side parts cannot absorb and support the arising forces
Solution Approach 1:
The bed frame is segmented into fixed and movable parts, with the drive motor and roller support system mounted on the fixed metallic part. The movable bed frame part rests on the roller without requiring the wooden side parts to support forces. This resolves the contradiction by enabling longitudinal movement through the roller while preventing force transmission to the structurally inadequate wooden components.
3Adaptability or versatility
If drive motors are installed in existing wooden bed frames, then moving bed functionality is achieved, but wood screw connections are subjected to unfavorable loads that cause them to come unscrewed over time
Solution Approach 1:
The drive motor assembly is created as a separate, self-contained unit mounted on a fixed bed frame component rather than being integrated into the wooden bed frame. This segmentation isolates the motor and its fastening requirements from the wooden structure, allowing retrofit functionality while preventing the unfavorable loads that would compromise wood screw connections.
Solution Approach 2:
A fixed bed frame part serves as an intermediary structure between the drive motor and the wooden bed frame. This intermediary absorbs and contains all action and reaction forces generated by the motor, preventing them from being transmitted to the wooden structure and its screw connections, thereby maintaining connection stability while achieving moving bed functionality.
4Ease of manufacture
If a complete moving bed system is designed as a retail unit with all components attached to a fixed frame, then installation complexity is reduced, but the device complexity increases
Solution Approach 1:
The moving bed system is segmented into modular components: a fixed bed frame part with the drive motor, a movable bed frame part, and supporting elements. This segmentation allows the system to be manufactured and sold as an integrated retail unit while keeping the internal structure manageable through clear functional separation, balancing ease of manufacture with acceptable device complexity.
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 solution provides a complete, functional, and easy-to-operate moving bed that supports all forces within the fixed frame, eliminating the need for complex installation and ensuring quiet, jerk-free movements, suitable for use with or without a bed frame.
Implementation Method 1
the motor drive may be an electromotive eccentric drive with a connecting rod that is coupled to the moving frame, thus enabling beneficial sinusoidal and jerk-free movements
Implementation Method 2
a roller guide is proposed. To this end, rollers that are offset from one another, preferably four rollers two of which are respectively opposite each other, are attached to opposite longitudinal parts of the frame in the area of the moving frame
Data Source
AI summary
A moving bed has a fixed bed part as a resting area for the head and upper body of a person, and a longitudinally moving bed part as a resting area for the buttocks and legs of a person. The bed has a first bed frame in the form of a stationary fixed frame that extends as a stationary longitudinal frame over the entire length of the bed and on which the upper, fixed bed part is formed. The bed has a second bed frame as a moving frame, which forms the lower longitudinally moving bed part; the moving frame is held to the fixed frame so that it can move longitudinally. A motor drive is mounted between the fixed frame and the moving frame, and by this motor drive, the moving frame may be moved alternatingly back and forth relative to the fixed frame in a predetermined longitudinal section.