Electrically controlled chassis and chair
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Solution Overview
Problem
Conventional chairs have complex internal control structures for manual lift and pitch adjustments of the chassis and backrest, making them difficult to operate.
Innovation Solution
An electrically controlled chassis with a drive motor, winding mechanism, and pull cords simplifies the adjustment mechanism by using a single drive motor to control lift and pitch adjustments through reversible winding, potentially incorporating a wireless signal receiver and photoelectric sensors for remote control and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment mechanisms are used for chassis lift and backrest pitch, then the chair can be adjusted, but the internal control structure becomes complicated and difficult to operate
Solution Approach 1:
The patent combines two separate adjustment mechanisms (chassis lift and backrest pitch) into a single integrated winding mechanism. One winding mechanism with two pull cords controls both functions, reducing structural complexity while maintaining adjustability. This merging of functions directly addresses the contradiction by simplifying the control structure without sacrificing operational capability.
Solution Approach 2:
The single winding mechanism is designed to perform multiple functions: it controls both the chassis lift adjustment and the backrest pitch adjustment through its two pull cords. This multi-functional design eliminates the need for separate mechanisms, thereby reducing overall device complexity while preserving full adjustment functionality for both chassis and backrest.
2Device complexity
If a single drive motor controls both lift and pitch adjustments through reversible winding, then device complexity is reduced, but control precision for each function may be affected
Solution Approach 1:
The single winding mechanism is segmented into two independent pull cord systems, each controlling a specific function (chassis lift or backrest pitch). The pull cords are reversely wound on the same mechanism, allowing independent control of each function while sharing the drive motor. This segmentation maintains adjustment precision for each function despite using a single drive source.
Solution Approach 2:
The winding mechanism employs dynamic reversible winding, where the direction of winding can be changed to control different functions. By dynamically switching the winding direction, the single drive motor can precisely control both lift and pitch adjustments, maintaining manufacturing precision while reducing device complexity.
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 solution simplifies the chair's adjustment mechanism, reduces production costs, and enhances operational convenience by streamlining the control structure while allowing for remote control and improved stability.
Implementation Method 1
a drive motor, disposed in the accommodation space of the electrical control box, and configured to control lift adjustment of the chassis of the chair and pitch adjustment of a backrest of the chair
Implementation Method 2
a winding mechanism, connected to an output shaft of the drive motor, and being rotatable with the output shaft of the drive motor; a first pull cord, reversely wound on the winding mechanism
Implementation Method 3
the chassis lift mechanism includes a pneumatic rod and a rotation stopper, one end of the pneumatic rod being provided with a key valve
Implementation Method 4
a throughbeam photoelectric sensor corresponding to a position of the baffle is disposed in the accommodation space of the electrical control box, the throughbeam photoelectric sensor operates via the opening
Data Source
Figure 1
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Figure 4
AI summary
Embodiments of the present disclosure relate to the technical field of chair adjustment and control devices, and in particular, relate to an electrically controlled chassis and a chair. The electrically controlled chassis includes: a chassis body; an electrical control box, internally provided with an accommodation space; a drive motor, configured to control lift adjustment of the chassis of the chair and pitch adjustment of a backrest of the chair; a winding mechanism, connected to an output shaft of the drive motor; a first pull cord, reversely wound on the winding mechanism; a second pull cord, normally wound on the winding mechanism; a backrest adjustment mechanism, disposed on the chassis body, and fixedly connected to the other end of the first pull cord; and a chassis lift mechanism, disposed on the chassis body, and fixedly connected to the other end of the second pull cord.