Flush-Mounted Electric Headrest Adjustment to Free Backrest Space
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Solution Overview
Problem
Existing electric adjustment devices for sofa headrests occupy significant space within the backrest support frame, limiting the installation of other functional devices like massage or physiotherapy units and restricting the sofa's functionality.
Innovation Solution
An electric adjustment device with a compact structure that includes a drive device arranged flush with a first fixing member, where one end of a second fixing member is pivotally connected to the first fixing member, and the drive device is connected to a connecting member that extends downward to fix to the backrest support frame, allowing the device to be installed within the headrest support frame instead of the backrest, thus freeing up space for additional features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electric adjustment device is installed inside the backrest support frame, then the headrest angle can be automatically adjusted, but the device occupies significant space and limits the installation of other functional devices
Solution Approach 1:
The patent extracts the electric adjustment device from the backrest support frame and relocates it to the headrest support frame. This separation removes the space-occupying conflict, allowing the backrest support frame to accommodate massage devices and physiotherapy devices while the headrest support frame houses the compact adjustment mechanism near its hinge connection.
2Power
If the drive device is arranged with significant height and volume, then it can provide sufficient driving force for headrest adjustment, but it cannot be compactly integrated into the headrest support frame
Solution Approach 1:
The patent reorients the drive device so that its output shaft extends in the thickness direction of the headrest support frame rather than occupying height or width space. This dimensional reconfiguration allows the drive device to maintain sufficient power while fitting compactly within the limited space of the headrest support frame structure.
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
This configuration allows for the installation of other functional parts within the backrest support frame, enhancing the sofa's functionality by providing a compact and space-efficient electric adjustment mechanism for the headrest.
Implementation Method 1
a drive device having an output end that linearly reciprocates
Implementation Method 2
One end of the second fixing member is pivotally connected to the first fixing member
Data Source
AI summary
An electric adjustment device for sofa headrest includes a first fixing member, a second fixing member, and a drive device having an output end that linearly reciprocates. One end of the second fixing member is pivotally connected to the first fixing member, and the drive device is pivotally connected to the first fixing member and arranged flush with the first fixing member. A sliding direction of the output end is perpendicular to a pivotal axis about which the second fixing member is pivotable to the first fixing member. Specifically, the second fixing member is extended downward to form a fixed end for fixing to a backrest support frame. The electric adjustment device is installed in the headrest support frame instead of the backrest support frame, so that other functional parts are installed inside internal space of the backrest support frame which improves the function of the sofa.