Double Drive Base Layout for Bending-Stable Bed Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric motor double drives for adjusting support parts of seating and reclining furniture, such as box spring beds, are not optimized for stability and cost-effectiveness, particularly in terms of structural design and component arrangement.
Innovation Solution
The electric motor double drive is redesigned with support surfaces positioned at the height of the pivot axes, allowing the crossbars to be placed below the pivot axes, shortening the base body and reducing the distance between fastening points, thereby enhancing stability and simplifying the structure while making it more cost-effective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the base body is designed with support surfaces at the ends in the longitudinal direction, then the double drive can be easily assembled onto cross members at the ends of a bed base, but the base body becomes longer and less stable against bending loads
Solution Approach 1:
The support surfaces are repositioned from the longitudinal ends to the longitudinal center region of the base body, specifically arranged at the height of the pivot axes. This spatial reconfiguration in the vertical dimension allows the pivot axes to lie vertically above the support surfaces, creating a more stable structure that resists bending loads while maintaining ease of assembly onto crossbeams.
2Device complexity
If the base body is shortened to improve stability and reduce material costs, then the distance between fastening points is reduced, but the assembly process becomes more complex
Solution Approach 1:
The support and fastening structures are designed with multi-functionality, serving both as support surfaces for resting on crossbeams and as fastening points for attachment. By positioning these structures at the longitudinal center region with support surfaces at pivot axis height, the design achieves both structural stability through shortened base body and ease of assembly through universal attachment capability.
3Stability of the object's composition
If the pivot axes are positioned vertically above the support surfaces, then the reaction forces are optimally distributed and stability is improved, but the base body length increases
Solution Approach 1:
The support surfaces are specifically positioned at the height of the pivot axes in the longitudinal center region, creating a localized optimal force distribution zone. This local quality enhancement ensures that reaction forces are optimally distributed at the critical pivot axis locations without requiring an increase in overall base body length, as the optimized positioning occurs at specific local positions rather than extending the entire structure.
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An electric double drive 2 for adjusting support elements of a support device for supporting upholstery of a seating and/or reclining furniture, in particular a mattress of a box spring bed, relative to each other, has a base body 4 on which two drive units 6, 8 are arranged, each having a drive element 10 or 12. The double drive 2 further has two pivot levers 18, 20 spaced apart from each other in the longitudinal direction of the base body 4, each pivotally mounted on the base body about a pivot axis 14 or 16, wherein the pivot levers 18, 20 are each operatively connected to the drive element 10, 12 of an associated drive unit 6, 8 for pivoting the respective pivot lever 18, 20 relative to the base body 4.The base body 4 has two longitudinally spaced support and fastening structures 30, 32 for supporting and fastening the base body 4 to crossbeams 38, 40, each support and fastening structure 30, 32 having a bearing surface 34 or 36 for resting on a crossbeam 38, 40. According to the invention, the bearing surfaces 34, 36 are arranged longitudinally of the base body at the level of the pivot axes 14, 16, such that in the mounting position of the double drive 2, the pivot axes 14, 16 lie vertically above the respective associated bearing surface 34 or 36.