Dual-axis encoder

By introducing a rotary positioning mechanism and positioning spring design into the dual-axis encoder, the problem of inaccurate gear shifting caused by loose positioning is solved, and reliable and stable signal output is achieved.

WO2025222763A1 Publication Date: 2025-10-30DONG GUAN CHANG TAI ER ELECTRONIC CO LTD
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Patent Information

Application Number
PCT/CN2024/125657
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-23
Filing Date
2024-10-18
Publication Date
2025-10-30

AI Technical Summary

Technical Problem

The existing dual-axis encoder has a loose positioning mechanism, which leads to inaccurate gear selection and inability to output signals accurately.

Method used

The rotating positioning mechanism between the inner and outer shaft cores, combined with the positioning spring and positioning groove design, ensures that the positioning component slides against the inner wall of the rotating positioning cavity, enhancing the positioning effect. Precise gear switching is achieved through the corrugated positioning component and positioning disc.

Benefits of technology

The structure reliability and stability of the dual-axis encoder have been improved, ensuring that the two output mechanisms can accurately output signals, avoiding the problem of inaccurate gear positions, and enhancing the reliability and stability of the signal.

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Abstract

A dual-axis encoder, comprising an inner shaft core (1), an outer shaft core (2), an outer shaft sleeve (3), a first output mechanism (4) and a second output mechanism (5). A first rotary positioning mechanism is arranged between the outer shaft core (2) and the first output mechanism (4); a rotary positioning cavity (6) is formed in the outer shaft sleeve (3); the first rotary positioning mechanism comprises an outer stop base (7); the outer stop base (7) is rotatably arranged in the rotary positioning cavity (6); positioning members (8) are movably arranged on two sides of the outer stop base (7); a plurality of positioning pits (9) are respectively arranged on two sides of the inner wall of the rotary positioning cavity (6) at equal intervals; positioning elastic sheets (10) are further arranged on the two sides of the outer stop base (7); and the positioning elastic sheets (10) movably abut against the positioning members (8). Due to the positioning elastic sheets (10) keeping pushing the positioning members (8), the force for the positioning members (8) to slide into the positioning pits (9) is increased, improving the structural reliability and stability, and ensuring the reliability of signal output of the first output mechanism (4).
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