Deceleration Device With Stopper Member For Flexible Rotation Settings
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Solution Overview
Problem
Conventional deceleration devices require multiple types of external and internal gears with protrusions of different sizes to achieve various rotation settings, leading to increased complexity and inconvenience.
Innovation Solution
A deceleration device featuring a driven gear, a deceleration unit with gears that include a first and second gear, a stopper member, and contacts that allow the second gear to rotate at a reduced speed, with the stopper member rotating in the same direction but at different speeds, enabling flexible rotation settings without the need for multiple gear types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of external gears and internal gears with protrusions of different sizes are used to achieve various rotation settings, then different rotation amounts can be set, but the device complexity increases and the number of gear types increases
Solution Approach 1:
The invention separates the rotation limiting function from the gear structure itself by introducing a独立的 stopper member with protrusions. The gears are divided into functional components: the driven gear transmits motion, the second gear provides reduced speed rotation, and the stopper member independently controls rotation limits. This segmentation allows rotation settings to be changed by replacing only the stopper member rather than multiple gear types.
Solution Approach 2:
The stopper member serves multiple functions: it limits the rotation amount of the second gear, provides different rotation settings through different protrusion configurations, and enables flexible adaptation to various product specifications. By making the stopper member a universal component that can be configured with different protrusions, the system achieves versatility without requiring multiple specialized gear types.
2Adaptability or versatility
If multiple types of external gears and internal gears with protrusions of different sizes are used to achieve various rotation settings, then different rotation amounts can be set, but manufacturing complexity and inconvenience increase
Solution Approach 1:
By segmenting the rotation control function into a separate stopper member, the manufacturing process is simplified. Instead of manufacturing multiple types of gears with different protrusions, only one type of gear (the second gear) needs to be produced in standard quantities, while the stopper member can be manufactured with different protrusion configurations as needed. This reduces overall manufacturing complexity.
Solution Approach 2:
The invention inverts the conventional approach by placing the rotation-limiting protrusions on the stopper member rather than on the gears themselves. This inversion allows the stopper member to be the variable component for different rotation settings, while the gears remain standardized, thereby simplifying manufacturing and inventory management.
3Adaptability or versatility
If the stopper member and second gear rotate at different speeds, then flexible rotation settings are enabled, but the mechanism complexity increases
Solution Approach 1:
The third gear acts as an intermediary that transmits driving power to the stopper member at a reduced speed. This intermediary gear enables the stopper member to rotate at a different speed than the second gear, providing flexible rotation settings. The speed reduction is achieved through the gear ratio between the third gear and stopper member, allowing independent speed control without complex mechanisms.
Data Source
AI summary
A deceleration device according to an embodiment includes a driven gear configured to rotate about a rotational axis by driving power of a drive mechanism; a deceleration unit including a plurality of gears including a first gear and a second gear, the first gear that rotates by the driven gear, the second gear that rotates about the rotational axis, the deceleration unit configured to rotate the second gear at a reduced speed with respect to the driven gear; a first contact included in the second gear; and a second contact provided separately from the driven gear and the plurality of gears and configured to come into contact with the first contact to stop the rotation of the second gear.