Electromotive dual drive
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Solution Overview
Problem
Existing electromotive double drives for furniture adjustment have inefficiencies in space utilization and packaging due to the subdivision of the housing into multiple sections, leading to increased production costs and limitations in shipping and storage, particularly with regard to the width and length of the housing.
Innovation Solution
The solution involves varying the lengths of the spindles and output members of the drive units, allowing the drive motors to be positioned closer together, which reduces the lateral projection of the housing and enables a more compact arrangement, allowing for a single control circuit board and reduced wiring, and facilitates more efficient use of space within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the housing is divided into multiple sections to accommodate different components, then the functionality and adaptability of the double drive are improved, but the production costs increase due to the need to fix several circuit boards and wire them to one another
Solution Approach 1:
The patent combines multiple circuit boards into a single integrated control unit that houses all necessary electronics, including motor control circuits, limit switch connections, and power management components. This single control unit is mounted in one location within the housing, eliminating the need for multiple separate circuit board installations and interconnections, thereby reducing production complexity while maintaining full functionality
2Ease of manufacture
If the drive motors are arranged with their axes parallel to the pivot axes, then the structural symmetry and ease of manufacture are improved, but the lateral projection of the housing increases, requiring more space for shipping and storage
Solution Approach 1:
The patent employs an asymmetric arrangement where the drive motor axes are oriented perpendicular to the pivot axes rather than parallel. This asymmetric configuration allows the motors to be positioned closer to the center of the housing, significantly reducing the lateral projection of the overall assembly. The asymmetric layout optimizes space utilization within the housing while maintaining ease of assembly through standardized mounting interfaces
3Area of stationary object
If the double drives are arranged with motors pointing towards one another to reduce width, then the packaging width efficiency is improved, but the longitudinal space requirement increases due to the need for offset arrangement
Solution Approach 1:
The asymmetric motor orientation with axes perpendicular to pivot axes enables a compact longitudinal arrangement where motors can be positioned adjacent to each other without requiring significant offset. This configuration allows double drives to be stacked or arranged in space-efficient patterns for packaging, optimizing both width and longitudinal dimensions compared to symmetric parallel arrangements
Data Source
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AI summary
The invention relates to an electromotive dual drive for adjusting two different furniture parts of an item of furniture having two drive units (20), each of which comprises a drive motor (21), a transmission (22) and a spindle drive having a respective spindle (24a, 24b) and acting on a drive member, wherein the two drive units (20) are arranged one behind the other in the longitudinal direction in a common housing (10), and wherein shaft holders (13) are configured on opposite end sections of the housing (10) in the longitudinal direction, for a respective pivot shaft of the item of furniture, on which a respective drive member acts. The electromotive dual drive is characterised in that the spindles (24a, 24b) and/or the drive members of the two drive units (20) are designed with different lengths and the drive motors (21) are differently spaced apart from the shaft holders (13) assigned thereto for the respective pivot shafts.