Mobile robot
First Claim
1. A mobile robot, comprising:
- a body;
a drive motor connected with the body;
a wheel connected with the body and configured to move in first and second directions relative to the body; and
a wheel guide unit coupled at a first end thereof to the body and at a second end thereof to a hub of the wheel, the wheel guide unit being contracted when the body is spaced apart from a surface on which the mobile robot moves,wherein the wheel guide unit expands to allow the wheel to be in contact with the surface when the body comes into contact with the surface; and
wherein the wheel guide unit further comprises a sub-guide unit coupled to the wheel so as to rotate around a shaft of the drive motor.
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Accused Products
Abstract
A mobile robot having wheels which maintain contact forces against a surface even when the mobile robot meets an obstacle on the surface and a body of the mobile robot is forced up against the obstacle. The mobile robot easily surmounts the obstacle on the surface, without requiring any sensors, any specific controller, any specific traveling unit to surmount over the obstacle, or any specific drive unit to drive the specific traveling unit. The mobile robot includes the body, the wheels connected with the body which move arcuately relative to the body, and a wheel guide unit coupled at a first end to the body and at a second end to a hub of each of the wheels. The wheel guide unit is contracted when the body is spaced apart from the surface on which the robot moves. However, the wheel guide unit expands to allow the wheel to be in contact with the surface when the body comes into contact with the surface.
14 Citations
16 Claims
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1. A mobile robot, comprising:
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a body; a drive motor connected with the body; a wheel connected with the body and configured to move in first and second directions relative to the body; and a wheel guide unit coupled at a first end thereof to the body and at a second end thereof to a hub of the wheel, the wheel guide unit being contracted when the body is spaced apart from a surface on which the mobile robot moves, wherein the wheel guide unit expands to allow the wheel to be in contact with the surface when the body comes into contact with the surface; and wherein the wheel guide unit further comprises a sub-guide unit coupled to the wheel so as to rotate around a shaft of the drive motor. - View Dependent Claims (2, 3)
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4. A mobile robot, comprising:
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a body; a drive motor connected with the body; a wheel connected with the body and which moves in first and second directions relative to the body; a power spring connected with the body; and a wheel guide unit coupled at a first end thereof to the power spring and at a second end thereof to a hub of the wheel, the wheel guide unit being contracted when the body is spaced apart from a surface on which the robot moves, wherein the wheel guide unit rotates, when the body comes into contact with the surface to allow the wheel to be in contact with the surface, and wherein the wheel guide unit further comprises a sub-guide unit coupled to the wheel so as to rotate around a shaft of the drive motor.
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5. A mobile robot, comprising:
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a body having a first end and a first lower surface near the first end, the first lower surface being inclined from a horizontal plane of a bottom-most portion of the body; a wheel connected with the body and which moves in first and second directions relative to the body; and a wheel guide unit coupled at a first end thereof to the body and at a second end thereof to a hub of the wheel, the wheel guide unit being contracted when the body is spaced apart from a surface on which the mobile robot moves, wherein the wheel guide unit expands to allow the wheel to be in contact with the surface when the body comes into contact with the surface, and wherein the body includes a support bracket having a first locking hole, an arc-shaped guide slot and an annular boss. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 15, 16)
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14. A mobile robot comprising:
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a body having a first end and a first lower surface near the first end, the first lower surface being inclined from a horizontal plane of a bottom-most portion of the body; a wheel connected with the body and which moves in first and second directions relative to the body; and a wheel guide unit coupled at a first end thereof to the body and at a second end thereof to a hub of the wheel, the wheel guide unit being contracted when the body is spaced apart from a surface on which the mobile robot moves, wherein the wheel guide unit expands to allow the wheel to be in contact with the surface when the body comes into contact with the surface, wherein the wheel is maintained at a particular height when the mobile robot is moving and when the surface is flat, wherein the first lower surface of the body raises the body when the first lower surface contacts a raised obstacle on the surface, removing a load of the weight of the mobile robot from the wheel, the wheel maintaining contact with the surface to surmount the obstacle, and wherein the wheel moves toward the body and the normal position of the body is restored after the mobile robot surmounts the raised obstacle.
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Specification