Wheel fastening system for mobile robot with wheels

{
  "publication_number": "US10137727B1",
  "country": "US",
  "kind": "B1",
  "title": "Wheel fastening system for mobile robot with wheels",
  "abstract": "A wheel fastening system for a wheeled mobile robot includes a chassis, a motor, a wheel, and a thrust bearing. The motor is disposed in the chassis, and the motor turns a shaft connected to the wheel. The thrust bearing is an interference fit between the wheel and the chassis and provides axial support for the wheel to hold the position of the wheel. The wheeled mobile robot does not deviate from a chosen path during movement.",
  "claims": [
    "1. A wheel fastening system for a wheeled mobile robot comprising: a chassis; a motor disposed in the chassis, and the motor having a shaft; a wheel centered on the shaft of the motor; and a thrust bearing interference fit between the wheel and the chassis, and the thrust bearing withstanding axial loads applied to the wheel.",
    "2. The wheel fastening system of claim 1, wherein the chassis comprises: a base; a cover covering the base; and a chamber defined between the base and the cover; and wherein the motor is disposed within the chamber of the chassis.",
    "3. The wheel fastening system of claim 2, wherein the cover has a side wall; and wherein the thrust bearing is an interference fit between the wheel and the side wall of the cover, and the thrust bearing has: a shaft washer abutting the wheel to rotate with the wheel; and a housing washer abutting the side wall of the cover and not rotating.",
    "4. The wheel fastening system of claim 2, wherein the base has a slot; and wherein the wheel is partially disposed in the chamber of the chassis and partially protrudes out of the slot of the base.",
    "5. The wheel fastening system of claim 3, wherein the base has a slot; and wherein the wheel is partially disposed in the chamber of the chassis and partially protrudes out of the slot of the base.",
    "6. The wheel fastening system of claim 2, wherein the base is oval shaped.",
    "7. The wheel fastening system of claim 3, wherein the base is oval shaped.",
    "8. The wheel fastening system of claim 4, wherein the base is oval shaped.",
    "9. The wheel fastening system of claim 5, wherein the base is oval shaped.",
    "10. The wheel fastening system of claim 1, wherein the wheel has a hub by which the wheel is centered on the shaft of the motor.",
    "11. The wheel fastening system of claim 2, wherein the wheel has a hub by which the wheel is centered on the shaft of the motor.",
    "12. The wheel fastening system of claim 3, wherein the wheel has a hub by which the wheel is centered on the shaft of the motor.",
    "13. The wheel fastening system of claim 4, wherein the wheel has a hub by which the wheel is centered on the shaft of the motor.",
    "14. The wheel fastening system of claim 5, wherein the wheel has a hub by which the wheel is centered on the shaft of the motor.",
    "15. The wheel fastening system of claim 6, wherein the wheel has a hub by which the wheel is centered on the shaft of the motor.",
    "16. The wheel fastening system of claim 10, further comprising a screw, wherein the screw passes through the hub of the wheel and is coupled to the shaft of the motor to secure the wheel to the shaft of the motor.",
    "17. The wheel fastening system of claim 11, further comprising a screw, wherein the screw passes through the hub of the wheel and is coupled to the shaft of the motor to secure the wheel to the shaft of the motor.",
    "18. The wheel fastening system of claim 12, further comprising a screw, wherein the screw passes through the hub of the wheel and is coupled to the shaft of the motor to secure the wheel to the shaft of the motor.",
    "19. The wheel fastening system of claim 13, further comprising a screw, wherein the screw passes through the hub of the wheel and is coupled to the shaft of the motor to secure the wheel to the shaft of the motor.",
    "20. The wheel fastening system of claim 14, further comprising a screw, wherein the screw passes through the hub of the wheel and is coupled to the shaft of the motor to secure the wheel to the shaft of the motor."
  ],
  "description_excerpt": "The present disclosure relates generally to mobile robot controls, and more particularly to a wheel fastening system for a wheeled mobile robot.\n\nMobile robots are classified as wheeled, legged, or tracked. The wheeled mobile robots are driven by wheels to achieve movement thereof. However, during movement of the wheeled mobile robot, the wheel may fail to be properly secured such that the direction of movement is not precise. Thus, the work productivity is low and damage can happen.\n\nMany aspects of the disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. FIG. 1 is a top perspective view of a wheel fastening system for a wheeled mobile robot. FIG. 2 is a bottom perspective view of the wheel fastening system of FIG. 1. FIG. 3 is a cross-sectional view taken along line in FIG. 1. FIG. 4 is a partially exploded perspective view of the wheel fastening system of FIG. 1.\n\nIt will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein.",
  "cpc": [
    "B60B 3/16",
    "A47L 2201/00",
    "A47L 9/009",
    "B25J 5/007",
    "B60B 3/145",
    "B60B 35/18",
    "B60K 2007/0038",
    "B60K 2007/0046",
    "B60K 7/0007"
  ],
  "ipc": [
    "A47L 9/00",
    "B25J 5/00",
    "B60B 3/14",
    "B60B 3/16",
    "B60B 35/18",
    "B60K 7/00"
  ],
  "assignees": [
    "FU TAI HUA IND SHENZHEN CO LTD",
    "HON HAI PREC IND CO LTD"
  ],
  "inventors": [
    "SUN YU-CHUN",
    "LU ZHAN-SHENG"
  ],
  "filing_date": "2018-01-05",
  "publication_date": "2018-11-27",
  "grant_date": "2018-11-27",
  "priority_date": "2017-11-21",
  "application_number": "US-201815863846-A",
  "family_id": "64315958",
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}