Linear Actuator Rod Coupling for Easier Furniture Assembly
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Solution Overview
Problem
The assembly and replacement of linear actuators in seating furniture are complex due to limited accessibility of the assembly region, making it difficult to secure the actuator to the frame.
Innovation Solution
A drive system with a linear actuator secured to a fixed frame using an articulated connection via actuation rods and studs, allowing for tool-free displacement into a locking position for secure attachment, simplifying assembly and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the linear actuator is screwed to the frame using individual screws, then the connection is secure and reliable, but the assembly complexity increases and accessibility requirements become more stringent
Solution Approach 1:
The patent combines multiple fastening functions into a single integrated clamp mechanism. The clamp element can simultaneously engage with multiple frame components, replacing what would traditionally require multiple individual screws. This merging of fastening functions maintains secure connection strength while reducing assembly complexity to a single operation.
Solution Approach 2:
The clamp element is designed as a multi-functional component that serves both as a securing mechanism and as a structural connector. It can accommodate different frame configurations and provides both mechanical support and fastening functions, reducing the need for separate specialized fasteners and simplifying the overall assembly process.
2Stability of the object's composition
If the linear actuator is secured to the frame with multiple screws, then the connection is stable and reliable, but the assembly time increases
Solution Approach 1:
The clamp mechanism is segmented into movable and fixed portions that can be independently positioned and then locked together. This segmentation allows for quick alignment and engagement without requiring multiple sequential fastening operations, significantly reducing assembly time while maintaining connection stability through the locked segments.
Solution Approach 2:
The clamp element is pre-configured with engagement features and adjustment mechanisms that allow it to be quickly positioned and secured in the correct location. The preliminary preparation of the clamp's engagement features enables rapid installation without requiring multiple adjustment or fastening steps, reducing assembly time while ensuring stable connection.
3Strength
If the assembly region is accessed from multiple angles, then the linear actuator can be securely attached, but the assembly process becomes more complex
Solution Approach 1:
The clamp element acts as an intermediary component that bridges the linear actuator and the frame structure. It provides a centralized engagement point that consolidates multiple attachment requirements into a single interface, eliminating the need to access and fasten from multiple angles separately. This intermediary mechanism maintains strong attachment while simplifying the assembly operation to a single accessible location.
Data Source
AI summary
A drive system includes a linear actuator for transmitting a linear movement, the linear actuator having a spindle and a nut which co-operates therewith and an electric motor for driving the spindle. The drive system has a fixed frame and at least one frame movable relative thereto, the linear actuator secured to the fixed frame and the movable frame being coupled to the nut in an articulated manner by at least one actuation rod. Movement of the nut along the spindle brings about a movement of the movable frame relative to the fixed frame. The nut further has at least one stud and the actuation rod is provided with a corresponding recess for fitting the actuation rod onto the stud, or vice versa, and the fitted actuation rod is secured to the stud by a securing element, in particular a clip.