Linear Motor Stator Segmentation for Sliding Door Width Adaptability
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Solution Overview
Problem
Traditional linear motor systems for sliding doors require customization for specific door widths, limiting their applicability and increasing production costs due to complex structures and mechanical abrasion issues.
Innovation Solution
A linear motor system with a stator assembly comprising multiple stators and a controller, where Hall devices are arranged at the ends of both the stators and controller, allowing for increased moving range and adaptability to various door widths without altering the stator length, and featuring pluggable terminals for simplified electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If Hall sensors are arranged only at one end of the iron-core coil assembly with fixed distance, then the system structure is simplified, but the system can only be installed in a door opening with a specific width
Solution Approach 1:
The linear motor system is divided into multiple independent stator assemblies, each with its own Hall sensor. This segmentation allows the system to be configured in different numbers and arrangements to match various door opening widths, resolving the contradiction between simplified structure and adaptability.
Solution Approach 2:
The stator assembly is designed as a universal module that can be used in multiple configurations. By arranging Hall sensors at both ends of each stator and allowing flexible combination of stators, the same basic design can adapt to different door widths without customization, achieving both structural simplicity and versatility.
2Adaptability or versatility
If the system is customized according to the width of the door opening, then the adaptability to different door widths is improved, but the cost is greatly increased and mass production cannot be achieved
Solution Approach 1:
The patent designs a universal stator assembly that serves multiple door width requirements. The same stator design with Hall sensors at both ends can be mass-produced and then configured in different quantities and arrangements to match various door openings, enabling both adaptability and mass production.
Solution Approach 2:
The system allows dynamic configuration by arranging multiple identical stator assemblies in series or parallel configurations. This dynamic adaptability through modular arrangement, rather than custom design, enables mass production of standardized components while maintaining versatility for different applications.
3Reliability
If traditional rotary motors with intermediate conversion devices are used, then the driving mechanism is well-established, but the system has large size, low efficiency and difficult maintenance
Solution Approach 1:
The patent replaces traditional rotary motors with intermediate mechanical conversion devices (gears, racks, chains) with a linear motor that directly generates linear motion. This substitution eliminates the intermediate mechanical transmission components, reducing system complexity, size, and maintenance requirements while maintaining reliable driving capability.
Solution Approach 2:
The invention extracts and removes the intermediate conversion devices from the traditional rotary motor system. By taking out the gears, racks, and chains that convert rotary motion to linear motion, the system achieves direct linear drive, simplifying the overall structure while preserving the essential driving function.
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
Enables precise control and increased moving range of the mover assembly, enhancing adaptability to different door widths, facilitating mass production and reducing costs by eliminating the need for custom systems for each width.
Implementation Method 1
end parts of the stators on two sides of the controller are provided with Hall devices
Data Source
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AI summary
The invention relates to a linear motor for a sliding door, which comprises a mover assembly, a stator assembly and a controller for controlling the mover assembly to move, wherein the stator assembly is electrically connected with the controller, and comprises two or more stators; the controller is arranged between the two adjacent stators; and end parts of the stators on two sides of the controller are provided with Hall devices. By arranging the controller between the two adjacent stators, the mover assembly can move on a left side and a right side of the controller, and the moving range of the mover assembly is increased. Furthermore, the Hall devices are arranged at the end parts of the stators on the two sides of the controller, and the moving range of the mover assembly to the left side and the right side can be further increased, so that a linear motor system can adapt to a wider door opening without changing the length of the stator assembly, and the adaptability of the system is greatly enhanced.