Electric mechanical stretching device of movable sofa
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Solution Overview
Problem
The existing electrical mechanical stretching devices for movable sofas have complex structures, leading to inefficiencies in motor kinetic efficiency, comfort, installation ease, and structural stability, particularly due to shaking and interference issues when the leg is folded.
Innovation Solution
The design incorporates a mechanical stretching device with a third leg rod and connecting rod, featuring a motor sliding block connected via rotating shafts to a guide rail, eliminating the need for an electrical bottom connecting rod, simplifying the structure and ensuring direct motor force application, facilitating easy installation and maintenance, and preventing motor head interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical driving means uses a complex structure with multiple transmission parts, then the motor can be fixed and connected, but the kinetic efficiency of the motor deteriorates
Solution Approach 1:
The patent removes the electrical bottom connecting rod from the structure, directly connecting the motor sliding block to the third connecting rod. This extraction of the unnecessary intermediate component simplifies the transmission path and improves kinetic efficiency while maintaining reliable motor fixation through the motor guide rail and rotating shaft connections.
2Reliability
If the electrical driving means uses a complex structure with multiple transmission parts, then the motor can be fixed, but the structure becomes complicated
Solution Approach 1:
The patent eliminates the electrical bottom connecting rod and simplifies the transmission structure by directly connecting the motor sliding block to the third connecting rod through rotating shafts. This reduces the number of components and simplifies the overall structure while maintaining reliable motor fixation.
Solution Approach 2:
The patent merges the functions of multiple components into a more integrated structure. The motor sliding block directly connects to the third connecting rod, combining the motor mounting and transmission functions into a more compact and simplified arrangement.
3Reliability
If the electrical driving means uses a complex structure with transmission parts, then the motor can be connected, but installation becomes difficult
Solution Approach 1:
By removing the electrical bottom connecting rod and intermediate transmission parts, the patent simplifies the assembly process. The motor can be directly installed on the third leg rod through the motor guide rail, and the motor sliding block can be directly connected to the third connecting rod, making installation easier while maintaining reliable motor connection.
4Ease of manufacture
If the motor head projects outside the electrical connecting rod, then the motor can be mounted, but interference occurs when the leg is completely folded
Solution Approach 1:
The patent removes the electrical bottom connecting rod that caused the motor head to project outward. By directly mounting the motor on the third leg rod and connecting the motor sliding block to the third connecting rod, the motor head no longer projects outside the structural boundaries, eliminating interference when the leg is completely folded.
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 results in a strong, efficient, and easy-to-install mechanical stretching device with improved comfort and stability, enhancing the overall performance and usability of the movable sofa.
Implementation Method 1
The motor sliding block is rotatably connected via a first rotating shaft to the motor sliding block connecting pipe
Implementation Method 2
The motor head is rotatably connected via a second rotating shaft to the motor leg fixing pipe
Data Source
AI summary
An electrical mechanical stretching device of a movable sofa includes a mechanical stretching device and an electrical device, wherein the mechanical stretching device includes a third leg rod and a third connecting rod. The electrical device consists of a motor sliding block connecting pipe, a motor, a motor leg fixing pipe, a motor guide rail and a motor sliding block. The motor is provided with the motor guide rail. The motor sliding block is mounted on the motor guide rail. A motor end is rotatably connected via a second rotating shaft to the motor leg fixing pipe which is fixed on the third leg rod. The motor sliding block is rotatably connected via a first rotating shaft to the motor sliding block connecting pipe which is fixed on the third connecting rod. A base of the mechanical stretching device is connected by two bottom connecting pipes.