DRIVING WHEEL ASSEMBLY AND ROBOT CLEANER HAVING THE SAME
First Claim
1. A robot cleaner comprising:
- a main body; and
a driving wheel assembly, comprising;
a driving wheel to drive the main body;
a housing;
a driving motor connected to one side of the housing to generate rotary force to rotate the driving wheel;
a rotary member with rotation around a rotation shaft of the driving motor, wherein the rotary member comprises a first unit to which the driving wheel is connected and a second unit disposed at a position opposite to the driving wheel with respect to the rotation shaft of the driving motor; and
a compression coil spring disposed between the housing and the second unit to apply pressure to the second unit,wherein a distance between a contact point where the compression coil spring and the second unit contact and the rotation shaft of the driving motor is shorter than a distance between a rotation shaft of the driving wheel and the rotation shaft of the driving motor.
1 Assignment
0 Petitions
Accused Products
Abstract
A driving wheel assembly and a robot cleaner having the same includes a main body and a driving wheel assembly including a driving wheel, a housing, a driving motor, a rotary member with rotation around a rotation shaft of the driving motor, where the rotary member includes a first unit and a second unit disposed at a position opposite to the driving wheel with respect to the rotation shaft of the driving motor, and a compression coil spring disposed between the housing and the second unit to apply pressure to the second unit, where a distance between a contact point where the compression coil spring and the second unit contact and the rotation shaft of the driving motor is shorter than a distance between a rotation shaft of the driving wheel and a rotation shaft of the driving motor.
34 Citations
18 Claims
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1. A robot cleaner comprising:
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a main body; and a driving wheel assembly, comprising; a driving wheel to drive the main body; a housing; a driving motor connected to one side of the housing to generate rotary force to rotate the driving wheel; a rotary member with rotation around a rotation shaft of the driving motor, wherein the rotary member comprises a first unit to which the driving wheel is connected and a second unit disposed at a position opposite to the driving wheel with respect to the rotation shaft of the driving motor; and a compression coil spring disposed between the housing and the second unit to apply pressure to the second unit, wherein a distance between a contact point where the compression coil spring and the second unit contact and the rotation shaft of the driving motor is shorter than a distance between a rotation shaft of the driving wheel and the rotation shaft of the driving motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A robot cleaner comprising:
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a main body; and a driving wheel assembly to drive the main body, the driving wheel assembly comprising; a housing; a driving motor connected to one side of the housing; a rotary member comprising a first unit connected to the housing to be rotated around a rotation shaft of the driving motor and a second unit protruding from one side of the first unit; a driving wheel rotatably connected to the first unit; and a compression coil spring disposed between a support rib protruding from one side of the housing adjacent to the rotation shaft of the driving motor to the inside of the housing and the second unit, and applying pressure to the second unit in the tangential direction of a trajectory formed by the rotation shaft of the driving motor and the second unit during a process of rotating the rotary member. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A driving wheel assembly mounted on a main body of a robot cleaner to drive the robot cleaner, the driving wheel assembly comprising:
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a housing; a driving motor connected to one side of the housing; a first unit connected to the housing to be rotated around a rotation shaft of the driving motor, and a second unit protruding from one side of the first unit; a driving wheel rotatably connected to the first unit; and a compression coil spring disposed at a position opposite to the driving wheel with respect to a straight line passing through the rotation shaft of the driving motor and applying pressure to the second unit in the tangential direction of a trajectory formed by the rotation shaft of the driving motor and the second unit during a process of rotating the first unit.
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18. A driving wheel assembly, comprising:
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a driving motor comprising a motor rotation shaft; a connecting assembly connected to and rotating around the motor rotation shaft; a driving wheel comprising a wheel rotation shaft, and disposed at a first end of the connecting assembly; and a coil spring disposed at a position to apply tangential pressure to a second end of the connecting assembly along a direction of rotation, wherein the first end and the second end of the connecting assembly are disposed on opposite sides of the motor rotation shaft, and a rotation of the connecting assembly results in a greater displacement of the driving wheel rotation shaft than a corresponding change in length of the coil spring.
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Specification