Hollow Planet Speed Reducer Wire Routing
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Solution Overview
Problem
Conventional hollow-type planet speed reducers lack efficient use of interior space, leading to increased volume due to the occupation of wires and cables, which is a challenge for precision machinery requiring reduced weight and volume.
Innovation Solution
The design incorporates a hollowed receiving space with a tubular member to accommodate wires and optimizes spatial configuration, utilizing planet gears as auxiliary components to reduce energy costs and overall volume by implementing a dual-speed reducing mechanism with a ring gear and sun gear arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional speed reducer design is used, then the structure is simple, but the interior space is wasted and overall volume increases due to wire occupation
Solution Approach 1:
The patent implements nesting by placing the tubular member containing wires inside the hollow cavity of the ring gear, and further nesting the planet gears within the same structural envelope. This multi-level nesting allows wires to occupy space that would otherwise be empty, reducing the overall volume of the speed reducer without adding external dimensions.
Solution Approach 2:
The patent utilizes the hollow cavity dimension of the ring gear to accommodate wires that would traditionally occupy external space. By moving wire routing from an external to an internal dimension (within the ring gear cavity), the design reduces the external footprint and overall volume of the speed reducer assembly.
2Use of energy by moving object
If planet gears are used as auxiliary components, then energy cost of motor input is reduced, but device complexity increases
Solution Approach 1:
The planet gears serve multiple functions: they provide the primary speed reduction mechanism, act as auxiliary components to reduce motor energy consumption, and contribute to the structural support of the transmission system. This multi-functionality allows the same components to address both energy efficiency and structural requirements without proportionally increasing complexity.
Solution Approach 2:
The patent merges the speed reduction function with the energy efficiency function by using the same planet gear mechanism for both purposes. The planet gears are integrated into the ring gear and sun gear assembly, combining what could be separate functional systems into a unified mechanism that simultaneously reduces speed and minimizes motor energy requirements.
3Volume of moving object
If hollowed receiving space is formed for wires, then overall volume is reduced, but manufacturing complexity increases
Solution Approach 1:
The hollow receiving space is segmented into the ring gear structure, which already possesses a hollow cavity design for its functional requirements. By utilizing this pre-existing hollow structure rather than creating a new hollow space, the manufacturing complexity is minimized while still achieving the volume reduction benefit of integrated wire routing.
Data Source
AI summary
A hollow-type planet speed reducer includes a body. The body includes at least one driving gear driven by a power input source. The driving gear is connected to a transmission gear, and the transmission gear is connected to a first gear. Based on this, the output rotation speed can be reduced by the incorporation of the driving gear, the transmission gear and the first gear. Besides, a tubular member passes though the body and has an accommodating space to receive wires of the hollow-type planet speed reducer.