Planetary Gear Drive With Self-Activating Dual Output Locking
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Solution Overview
Problem
Existing drive devices require significant control and regulation effort to operate multiple outputs, and there is a need for a space-saving and cost-effective solution that can drive two different outputs with minimal operational effort.
Innovation Solution
A drive device with a self-activating locking mechanism that automatically locks and releases rotational movements of shafts based on their positions, using a planetary gear system with a locking slide and guide tracks to minimize control effort and reduce component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a planetary gear system is used to drive multiple outputs, then power density and torque transmission are improved, but control and regulation effort increases significantly
Solution Approach 1:
The locking mechanism automatically locks and releases shafts based on their rotational positions without external control. The holding elements and guide tracks create a self-regulating system where the mechanism itself determines when locking occurs, eliminating the need for complex control systems while maintaining high power density
2Measurement precision
If additional control mechanisms are added to regulate multiple outputs, then operational precision is improved, but device complexity and cost increase
Solution Approach 1:
The guide tracks provide positional feedback about the rotational positions of the shafts. This feedback automatically triggers the locking mechanism when specific positions are reached, achieving precise operational control without additional sensors or control electronics
Solution Approach 2:
The holding elements act as intermediaries between the shafts and the locking mechanism. They transfer positional information from the rotating shafts to the locking mechanism, enabling precise control through a simple mechanical interface rather than complex control systems
3Volume of moving object
If a compact planetary gear design is used, then space utilization is improved, but manufacturing precision requirements increase
Solution Approach 1:
The locking mechanism is segmented into separate components (locking slides, holding elements, guide tracks) that can be manufactured independently with standard tolerances and then assembled. This segmentation reduces the overall manufacturing precision requirements compared to a monolithic compact design
Data Source
Figure 1
Figure 2~4
Figure 5a~5b
AI summary
A drive device (6) is described, comprising at least one drive unit (6A) and at least one planetary gear (8) with a first shaft (11), a second shaft (9), and at least one third shaft (10). A drive torque from the drive unit (6A) can be introduced into the planetary gear (8) via the first shaft (11). An output torque can be transmitted from the planetary gear (8) via the second shaft (9) and the third shaft (10). Additionally, a self-activating locking mechanism (15) is provided, by means of which the second shaft (9) and the third shaft (10) of the planetary gear (8) can be alternately locked in rotation, while either the second shaft (9) or the third shaft (10) can be driven rotationally by the drive unit (6A) via the first shaft (11).