Axial Conversion Gear Device Radial Size Reduction
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Solution Overview
Problem
Existing axial conversion gear devices face challenges in minimizing axial size while maintaining compact radial dimensions, often resulting in dead spaces and interference issues due to the placement of bevel gears and crankshafts.
Innovation Solution
The axial conversion gear device incorporates a crankshaft with an eccentric portion, oscillation gears, a transmitting gear with spaced-apart gears, and an axial conversion unit where the axial conversion gear is positioned between the first and second gears, allowing the external tooth gear to occupy dead space and preventing radial interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the second bevel gear is located farther from the first outer gear than the input gear in the axial direction, then the gear transfer device can be prevented from radially becoming large, but the device axially becomes large due to dead space formation
Solution Approach 1:
The patent repositions the axial conversion gear in the axial direction between the first and second gears, utilizing the axial dimension to resolve the radial size constraint. This dimensional rearrangement allows the bevel gears to be positioned closer radially while accommodating the axial conversion mechanism in the axial space, thereby reducing radial size without creating excessive axial dead space.
Solution Approach 2:
The axial conversion gear is nested within the axial space defined by the first and second gears of the transmitting gear. This nesting arrangement allows the axial conversion mechanism to occupy the available axial dimension between the two gears, effectively utilizing the space without increasing the overall radial footprint of the device.
2Length of stationary object
If the input gear and outer gear of crankshaft are located nearly on the same plane, then the device can be prevented from axially becoming large, but it becomes difficult to radially downsize due to interference between gears
Solution Approach 1:
The patent introduces axial separation between the first and second gears of the transmitting gear, creating distinct axial levels. This allows the input gear and crankshaft outer gear to be positioned on the same plane radially while preventing interference through axial spacing, thus enabling radial downsizing without increasing axial size excessively.
Solution Approach 2:
The transmitting gear is segmented into two separate gears (first gear and second gear) positioned at different axial locations. This segmentation allows the input gear to engage with the first gear while the axial conversion gear engages with the second gear, preventing radial interference between the input gear and crankshaft outer gear while maintaining compact axial dimensions.
3Volume of stationary object
If the axial conversion gear is positioned to utilize dead space between existing components, then the overall device size is reduced, but component placement becomes more complex
Solution Approach 1:
The axial conversion gear is nested within the axial envelope defined by the first and second transmitting gears, utilizing the space between them. This nested positioning reduces the overall device volume by filling previously unused axial space, while the regular spacing between the two transmitting gears simplifies the placement methodology despite the compact arrangement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables the device to be both axially compact and radially downsized by utilizing the dead space effectively and optimizing gear placement, reducing the overall size without compromising functionality.
Implementation Method 1
a crankshaft having a shaft main body, an eccentric portion that is eccentric to the shaft main body
Data Source
AI summary
An axial conversion gear device includes: a crankshaft having a first eccentric portion and a shaft gear; a first oscillation gear having first external teeth; a transmitting gear having a first gear engaged with the shaft gear and a second gear spaced apart from the first gear in an axial direction of the first gear; an axial conversion unit having an external tooth gear engaged with the second gear and an axial conversion gear converting input torque into torque in an axial direction of the external tooth gear; and an outer cylinder having inner tooth pins engaged with the first external teeth of the first oscillation gear, wherein in the axial direction of the external teeth gear, the axial conversion gear is located between the first gear and the second gear.