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US 8,726,753 B2Granted
Anti-backlash gear and transmission mechanism using the same
AssigneesFu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
InventorsXin Yang, Wei Wu
Life of this patent
Estimating the term…
Abstract
A gear includes an outer ring, an inner ring, gear teeth, and elastic members engaged with the gear teeth. The outer ring defines a number of first fixing holes. The inner ring and the outer ring are concentric, and the inner ring defines a number of second fixing holes respectively corresponding to the first fixing holes, and each pair of first and second fixings hole align with the center of the rings, and define an axis of movement for spring loaded gear teeth.
Claims15
A gear, comprising:
- an outer ring defining a plurality of first fixing holes in its periphery;
- an inner ring concentric with the outer ring, and defining a plurality of second fixing holes in its periphery, the second fixing holes corresponding to the first fixing holes, wherein each first fixing hole, the corresponding one of the second fixing holes, and the center of the rings are in alignment, and defining an axis of radial movement between the pair of the first and second fixing holes;
- a plurality of gear teeth;
- and
- a plurality of elastic member sleeved on the respective gear teeth;
- wherein each gear tooth extends through a pair of corresponding first and second fixing holes, and being movable along the axis defined by the first and second fixing holes, each gear tooth comprises an engaging portion located outside the outer ring, the engaging portion comprises a meshing surface and a stopper surface having a size greater than the first fixing hole;
- each elastic member is configured to deform and rebound during the movement of the corresponding gear tooth so as to absorb shock generated by the gear.
4 more elements
A transmission mechanism, comprising:
- a first gear, comprising:
- an outer ring defining a plurality of first fixing holes in its periphery;
- an inner ring concentric with the outer ring, and defining a plurality of second fixing holes in its periphery, the second fixing holes corresponding to the first fixing holes, wherein each first fixing hole, the corresponding one of the second fixing holes, and the center of the rings are in alignment, and defining an axis of radial movement between the pair of the first and second fixing holes;
- a plurality of first gear teeth;
- and
- a plurality of elastic member sleeved on the respective gear teeth;
- and
- a second gear with a plurality of second gear teeth meshed with the first gear;
- wherein each first gear tooth extends through a pair of corresponding first and second fixing holes, and being movable along the axis defined by the pair of the first and second fixing holes, each first gear tooth of the first gear comprises an engaging portion located outside the outer ring, the engaging portion comprises a meshing surface and a stopper surface having a size greater than the first fixing hole;
- each elastic member is configured to deform and rebound during the movement of the corresponding first gear tooth so as to absorb the shock generated by the first and second gears.
7 more elements
Dependencies are inferred from the claim text.