Gear-Integrated Sensor Layout for Thin Rotating Assemblies
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Solution Overview
Problem
The arrangement of sensors in conventional rotating devices increases the thickness of the device.
Innovation Solution
A rotating device design that accommodates the sensor part within a housing, which is integrated into a recess of the gear, reducing the overall thickness by housing the sensor components within the gear's rotational axis direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is arranged in a conventional rotating device, then the rotational position can be detected, but the thickness of the device increases
Solution Approach 1:
The sensor housing is nested within the recess of the gear, allowing the sensor components to be accommodated within the existing gear structure rather than adding external thickness. The housing fits into the recess space, effectively hiding the sensor within the gear's rotational axis direction.
Solution Approach 2:
The sensor arrangement transitions from a conventional external placement to an internal placement within the gear's recess. By utilizing the recess space in the rotational axis direction, the sensor is repositioned to a different dimensional space that does not increase the overall device thickness.
2Length of moving object
If the sensor housing is accommodated in the gear recess, then the device thickness is reduced, but the sensor components need precise integration
Solution Approach 1:
The sensor system is segmented into distinct components: the sensor part and the housing. The housing is designed as a separate component that fits into the gear recess, allowing for modular assembly and reducing the need for high-precision integration of the entire sensor system into the gear.
Solution Approach 2:
The housing acts as an intermediary component between the sensor part and the gear recess. It provides a protective enclosure and facilitates the integration of the sensor into the recess space, simplifying the manufacturing precision requirements by decoupling the sensor mounting from direct gear integration.
Data Source
AI summary
A rotating device 1 according to the present application includes a motor 3, a gear 5 that transmits rotation of the motor 3 to an external device, and a sensor 7. The sensor 7 includes a sensor part 70 and a housing 72 that accommodates the sensor part 70. The sensor part 70 is capable of detecting a rotational speed or a rotational angle of the gear 5. The gear 5 includes a recess 50 in a rotational axis direction of the gear 5. The recess 50 accommodates a part of the housing 72.