Agile versatile mobile robot body

• US 5,515,934 A
• Filed: 10/17/1994
• Issued: 05/14/1996
• Est. Priority Date: 10/17/1994
• Status: Expired due to Fees

• Current Assignee: Stuart D. Davis
• Original Assignee: Stuart D. Davis
• Inventors: Davis, Stuart D.
• Primary Examiner(s): Focarino, Margaret A.
• Assistant Examiner(s): Johnson, Victor E.
• Application Number:
  US08/323,760
• Time in Patent Office: 575 Days
• Field of Search: 180/8.1, 180/8.2, 180/8.3, 180/8.5, 180/8.7, 180/15, 180/209, 180/6.2, 901/1, 901/48, 901/50, 296/193, 296/196, 296/197
• US Class Current: 180/8.2
• CPC Class Codes: B25J 5/007 mounted on wheels
• CPC Class Codes: B62D 57/021 the ground engaging means being sequentially inflatable bags for peristaltic movement B62D57/024 takes precedence
• CPC Class Codes: B62D 57/022 consisting of members having both rotational and walking movements
• CPC Class Codes: B62D 57/024 specially adapted for moving on inclined or vertical surfaces endless-track vehicles for ascending or descending stairs B62D55/075; hand-carts with provision for travelling up or down stairs B62B5/02

Abstract

A modular robot body assembly includes a generally rhombicuboctahedron geometric shape segmented into five modules symmetrically located around a horizontal center shaft system which allows the robot body, front legs, and back legs to rotate about a horizontal center axis with respect to one another. Four quarter-shell modules are arranged at 90 degree angles from each other about the common horizontal center axis and joined at edges to each other and at their inner facing edges to a core module containing a shaft rotatably mounted along the horizontal center axis. Each module may contain functionally different parts that can be mixed and matched with other modules to suit particular applications. A flexible coil conduit is connected between the shaft and the core module providing an electrical linkage form the robot body to the legs while maintaining rotational capability of the legs with respect to the body.

Claims

1. A robot body, comprising:

an elongated rectangular core module having four rectangular sides and two opposite square ends, each of said ends having four edges, said core module having a longitudinal axis extending between said ends; and

four panels attached to said core module, said panels being arranged radially around said axis, each of said panels including a rectangular side parallelly spaced from one of said sides of said core module, said rectangular side of said panel having two longitudinal edges parallel to said axis and two transverse edges orthogonal to said axis, said rectangular side of said panel being longitudinally shorter than said side of said core module, each of said panels including first and second rectangular angled sides extending from said transverse edges to adjacent edges along said ends of said core module, each of said panels including a third rectangular angled side extending from one of said longitudinal edges to an adjacent longitudinal edge of said rectangular side of an adjacent panel, each of said panels including two triangular sides extending between opposite ends of said third rectangular angled side and adjacent ends of said first and second rectangular angled sides.

2. The robot body of claim 1, further including a rim extending around each of said panels, and a plurality of holes arranged around said rim, so that said rims of adjoining panels are in abutting relations and said holes on abutting rims are aligned together, said holes being adapted to receive screws for attaching said panels together.

3. The robot body of claim 1, further including a plurality of bumpers positioned along adjoining sides of said panels.

4. A robot, comprising:

a core module;

only one pair of front legs having proximal ends pivotally attached to said core module and angling downwardly and forwardly therefrom, said front legs being pivoted about an axis at said proximal ends;

only one pair of rear legs having proximal ends pivotally attached to said core module and angling downwardly and rearwardly therefrom, said rear legs being pivoted about said axis at said proximal ends, said front and rear legs supporting said core module at a predetermined height above a surface;

a pair of non-driven wheels attached to respective distal ends of said from legs;

a pair of driven wheels attached to respective distal ends of said rear legs;

rotating means for independently rotating each of said pairs of legs about said axis with respect to said core module, so that when said pairs of legs are rotated in opposite directions with respect to said core module, said height of said core module is changed, and when said pairs of legs are rotated in the same direction with respect to said core module, said core module is rotated about said axis; and

driving means for driving said driven wheels comprising a pair of drive motors mounted on respective rear legs.

5. The robot of claim 4 wherein said rotating means comprises a pair of concentric shafts positioned along said axis, one of said shafts being hollow for receiving the other shaft, each of said shafts being driven by motor means for rotation about said axis, one of said shafts having one end rigidly attached to one of said front legs for rotating said one of said front legs, the other shaft having one end rigidly attached to one of said rear legs for rotating said one of said rear legs.

6. The robot of claim 4, further including a flexible coil conduit coiled around said shafts and connected to said drive motors.

7. A robot, comprising:

an elongated rectangular core module having four rectangular sides and two opposite square ends, each of said ends having four edges, said core module having a longitudinal axis extending between said ends;

four panels attached to said core module, said panels being arranged radially around said axis, each of said panels including a rectangular side parallelly spaced from one of said sides of said core module, said rectangular side of said panel having two longitudinal edges parallel to said axis and two transverse edges orthogonal to said axis, said rectangular side of said panel being longitudinally shorter than said side of said core module, each of said panels including first and second rectangular angled sides extending from said transverse edges to adjacent edges along said ends of said core module, each of said panels including a third rectangular angled side extending from one of said longitudinal edges to an adjacent longitudinal edge of said rectangular side of an adjacent panel, each of said panels including two triangular sides extending between opposite ends of said third rectangular angled side and adjacent ends of said first and second rectangular angled sides;

only one pair of front legs having proximal ends pivotally attached to said ends of said core module and angling downwardly and forwardly therefrom, said front legs being pivoted about said axis at said proximal ends;

only one pair of rear legs having proximal ends pivotally attached to said ends of said core module and angling downwardly and rearwardly therefrom, said rear legs being pivoted about said axis at said proximal ends, said from and rear legs supporting said core module at a predetermined height above a surface;

a pair of non-driven wheels attached to respective distal ends of said front legs;

a pair of driven wheels attached to respective distal ends of said rear legs;

rotating means for independently rotating each of said pairs of legs about said axis with respect to said core module, so that when said pairs of legs are rotated in opposite directions with respect to said core module, said height of said core module is changed, and when said pairs of legs are rotated in the same direction with respect to said core module, said core module is rotated about said axis; and

driving means for driving said driven wheels.

8. The robot of claim 7, further including a rim extending around each of said panels, and a plurality of holes arranged around said rim, so that said rims of adjoining panels are in abutting relations and said holes on abutting rims are aligned together, said holes being adapted to receive screws for attaching said panels together.

9. The robot of claim 7 wherein said rotating means comprises a pair of concentric shafts positioned along said axis, one of said shafts being hollow for receiving the other shaft, each of said shafts being driven by motor means for rotation about said axis, one of said shafts having one end rigidly attached to one of said front legs for rotating said one of said front legs, the other shaft having one end rigidly attached to one of said rear legs for rotating said one of said rear legs.

10. The robot of claim 7 wherein said driving means comprises a pair of drive motors attached to said rear legs for driving said driven wheels.

11. The robot of claim 10, further including a flexible coil conduit coiled around said shafts and connected to said drive motors.

12. The robot of claim 7, further including a plurality of bumpers positioned along adjoining sides of said panels.