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Drive gear shaft structure of a self-moving type

  • US 20030070500A1
  • Filed: 10/15/2001
  • Published: 04/17/2003
  • Est. Priority Date: 10/15/2001
  • Status: Active Grant
First Claim
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1. A drive gear shaft structure of a self-moving type mower which is disposed adjacent to a respective one of wheel units at the bottom portion of a mower, said structure comprising:

  • a lower housing and an upper housing which co-define a receiving space after assembly thereof;

    a shaft extending through said upper and lower housings and having two ends extending outwardly, with end portions respectively provided with shaft end gear and engaging toothed rings within the wheels of the mower;

    a gear sleeved on said shaft in said receiving space, an inner edge of said gear being constituted by two opposite taper holes extending therethrough;

    two transmission taper blocks sleeved and positioned on two sides of said gear of said shaft, with taper bodies disposed in said taper holes of said gear;

    a worm vertically disposed in said receiving space defined by said upper and lower housings, said worm engaging said gear;

    a transmission structure having one end connectedly provided at an end portion of said worm and another end connected to a transmission spindle of a drive motor of a cutter of the mower; and

    a trigger rod vertically disposed in said receiving space adjacent to one of said transmission taper blocks, a top end of said trigger rod being connected to a pull structure controlled by the user for controlling said trigger rod to push said transmission taper block.

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