Power transmission device
First Claim
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1. A power transmission device comprising:
- a pin gear having a plurality of power transmission pins that are rotationally moved by a corresponding tooth shape formed on an outer gear;
a motor arranged in a direction substantially perpendicular to a rotation axis of the pin gear, and generating power to rotate the pin gear; and
a motion transfer unit connected to the pin gear and the motor between the pin gear and the motor, and transferring a rotational motion of the motor to a rotational motion of the pin gear;
wherein the motion transfer unit comprises;
a unit housing; and
a built-in deceleration module provided in the unit housing, and decelerating a rotation force of the motor and transferring a decelerated rotational force to the pin gear, wherein the built-in deceleration module comprises;
a first drive gear inserted in a first opening formed in the unit housing in a direction substantially perpendicular to the rotation axis of the pin gear, and rotated by the motor; and
a first driven gear inserted in a second opening communicating with the first opening and formed in a direction crossing the first opening, and decelerating a rotation force of the first drive gear by being engaged with the first drive gear,wherein the first drive gear is a drive bevel gear and the first driven gear is a driven bevel gear,wherein the built-in deceleration module further comprises a second drive gear that is connected to the driven bevel gear in an area of the second openingwherein the built-in deceleration module further comprises;
a drive gear pressing and insertion structure connected to the second drive gear forming one body, and comprising a shaft pressing and insertion portion having a shaft pressing and insertion hole in which a non-circular shaft formed at one end portion of the second drive gear is pressed and inserted, and a plurality of pin insertion holes in which a plurality of connection pins formed on the driven bevel gear are inserted; and
a drive gear coupling portion coupling the second drive gear and the drive gear pressing and insertion structure.
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Accused Products
Abstract
A power transmission device includes a pin gear having a plurality of power transmission pins that are relatively moved corresponding to a tooth shape formed on an outer gear, a motor arranged in a direction crossing a rotation axis of the pin gear, and generating power to rotate the pin gear, and a motion transfer unit connected to the pin gear and the motor between the pin gear and the motor, and transferring a rotational motion of the motor to a rotational motion of the pin gear.
1 Citation
14 Claims
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1. A power transmission device comprising:
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a pin gear having a plurality of power transmission pins that are rotationally moved by a corresponding tooth shape formed on an outer gear; a motor arranged in a direction substantially perpendicular to a rotation axis of the pin gear, and generating power to rotate the pin gear; and a motion transfer unit connected to the pin gear and the motor between the pin gear and the motor, and transferring a rotational motion of the motor to a rotational motion of the pin gear; wherein the motion transfer unit comprises; a unit housing; and a built-in deceleration module provided in the unit housing, and decelerating a rotation force of the motor and transferring a decelerated rotational force to the pin gear, wherein the built-in deceleration module comprises; a first drive gear inserted in a first opening formed in the unit housing in a direction substantially perpendicular to the rotation axis of the pin gear, and rotated by the motor; and a first driven gear inserted in a second opening communicating with the first opening and formed in a direction crossing the first opening, and decelerating a rotation force of the first drive gear by being engaged with the first drive gear, wherein the first drive gear is a drive bevel gear and the first driven gear is a driven bevel gear, wherein the built-in deceleration module further comprises a second drive gear that is connected to the driven bevel gear in an area of the second opening wherein the built-in deceleration module further comprises; a drive gear pressing and insertion structure connected to the second drive gear forming one body, and comprising a shaft pressing and insertion portion having a shaft pressing and insertion hole in which a non-circular shaft formed at one end portion of the second drive gear is pressed and inserted, and a plurality of pin insertion holes in which a plurality of connection pins formed on the driven bevel gear are inserted; and a drive gear coupling portion coupling the second drive gear and the drive gear pressing and insertion structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification