Linear Motor Secondary Segment With Bridge Retainers for Magnet Fixing
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Solution Overview
Problem
The challenge of securely attaching flat magnets to segmented secondary tracks in synchronous linear motors, particularly due to the long curing times of high-strength adhesives and the cost of roughening bonding surfaces, is addressed.
Innovation Solution
A segment for a secondary part of a linear motor with retaining elements on either side that form bridges or webs to hold and fix magnets, allowing for a positive fit and secure fixation without additional gluing, enabling precise positioning and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high-strength adhesives are used to attach magnets to segmented secondary tracks, then the bonding strength is improved, but the curing time increases significantly
Solution Approach 1:
The patent divides the secondary track into modular segments, each with integrated retaining elements. This segmentation allows magnets to be mechanically retained by the segment structure itself rather than relying solely on adhesive bonding, thereby reducing the dependency on long-curing high-strength adhesives while maintaining secure attachment.
Solution Approach 2:
The retaining elements are pre-formed as integral parts of the segment structure during manufacturing. This preliminary action eliminates the need for additional bonding steps during assembly, as the mechanical retention structure is already in place to secure magnets immediately upon assembly, bypassing the need for extended adhesive curing time.
2Reliability
If bonding surfaces are roughened to increase adhesive strength, then the bonding reliability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the chemical bonding mechanism (adhesive bonding requiring surface roughening) with a mechanical retention system. The retaining elements provide form-fit connections through geometric interlocking, eliminating the need for surface pretreatment such as sandblasting or roughening, thereby reducing manufacturing costs while maintaining or improving bonding reliability.
3Adaptability or versatility
If individual segments are used to manufacture the secondary track, then the production flexibility is improved, but the challenge of securely attaching magnets to flat carrier plates increases
Solution Approach 1:
The patent merges the retaining elements directly into the segment structure, combining the functions of the carrier plate and the retention mechanism into a single integrated component. This integration ensures that each segment inherently provides secure magnet attachment capabilities, simplifying the overall attachment process while maintaining the flexibility benefits of modular segmentation.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a segment (1, 1B, 1C) for a secondary part (2) of a linear motor (10), comprising at least one retaining element (13A, 13B, 13C) on a first side (A) of the segment (1, 1B, 1C), wherein the at least one retaining element (13A, 13B, 13C) on the first side (A) is designed such that, when assembled with a further segment (1, 1B, 1C) having at least one retaining element (12A, 12B, 12C, 12D) on a second side (B) of the further segment (1, 1B, 1C), it forms a bridge for holding and/or fixing a magnet (4, 6).