Electric Sofa Frame with Segmented Headrest and Waistrest Assemblies
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Solution Overview
Problem
Existing electric sofa frames lack functionality in providing waistrest and headrest support, limiting user comfort and satisfaction.
Innovation Solution
An electric sofa frame design incorporating a linkage mechanism driven by electric motors, which includes a waistrest and headrest assembly, allowing for leg extension, backrest tilting, and adjustable support for the waist and head, enhancing user comfort and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional electric sofa frame design is used, then the structure is simple, but the functions are limited (no waistrest and headrest)
Solution Approach 1:
The back assembly is segmented into multiple functional zones: upper backrest, waistrest assembly, and headrest assembly. Each segment can be independently adjusted via separate drive mechanisms, allowing customized positioning for different user needs while maintaining overall structural integration through the common support frame.
Solution Approach 2:
The electric sofa frame integrates multiple functions into a single system: leg extension, backrest tilting, waistrest adjustment, and headrest adjustment. The control system coordinates these functions through a unified control unit that can operate the drive mechanisms in sequence or simultaneously, providing versatile functionality without requiring separate independent systems.
2Ease of operation
If multiple assemblies (waistrest, headrest) are added, then user comfort is enhanced, but device complexity increases
Solution Approach 1:
The waistrest assembly and headrest assembly are merged with the back assembly through a common support frame and coordinated control system. The drive mechanisms are integrated such that the first drive mechanism controls both backrest tilting and waistrest adjustment, while the second drive mechanism controls headrest adjustment, reducing the number of independent systems needed.
Solution Approach 2:
The assemblies incorporate dynamic adjustment capabilities with multiple drive mechanisms that can operate independently or in coordination. The waistrest and headrest can be positioned at various angles and heights, providing dynamic adaptability to user needs while the control system manages the complexity through automated sequencing and positioning.
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 design provides comprehensive support and massage functions for the user's body, enhancing comfort and functionality beyond traditional electric sofa frames by enabling leg extension, backrest tilting, and adjustable headrest and waistrest positions.
Implementation Method 1
Both ends of the first tension spring are respectively disposed at the fixing frame and one end of the first support. The first tension spring is used for tensioning the first support such that the first protruding post urges against the sidewall on one end of the first arc groove.
Implementation Method 2
Both ends of the second tension spring are respectively disposed on the fixing frame and one end of the second support. The second tension spring is used for tensioning the second support such that the second protruding post urges against the sidewall on one end of the second arc groove.
Implementation Method 3
a first driving electric motor for driving a linkage mechanism
Implementation Method 4
a second driving electric motor for rotating the waistrest assembly
Implementation Method 5
a third driving electric motor for rotating the headrest assembly
Data Source
AI summary
Furniture seats, in particular relate to an electric sofa frame, comprising a bottom frame assembly, a sofa mounting frame, a leg assembly, a back assembly, a linkage mechanism and a first driving electric motor for driving the movement of the linkage mechanism. The movement of the linkage mechanism may cause the leg assembly and/or the back assembly to expand or contract; and further includes a fixing frame, a headrest assembly, a waistrest assembly, a second drive electric motor for driving rotation of the waistrest assembly, and a third driving electric motor that drives the headrest assembly to rotate; the headrest assembly and the waistrest assembly are connected to the back assembly via a mount. The utility model has the advantages of simple and compact structure, stable and reliable operation and can be used for providing the user with the head support and the waist support massage.