Belt sander
AssigneeBasso Industry Corp.
InventorsYu-Da Chen, Ching-Chih Ho
Life of this patent
Estimating the term…
Abstract
A belt sander includes: a power unit having a rotating shaft; a rotatable belt casing defining a track groove that is open toward the power unit and that surrounds the rotating shaft, and having a plurality of engaging portions that are arranged around the track groove; an abrasive belt drivable by the rotating shaft; and a positioning unit including a movable positioning member that is adapted for manual operation, and an engaging member that is co-movably connected to the positioning member. The positioning unit is movable between an engaging position, where the engaging member is engaged with a selected one of the engaging portions, and a releasing position, where the engaging member is disengaged from the engaging portions.
Claims10
A belt sander comprising:
- a main casing;
- a power unit mounted in said main casing, and having a rotating shaft that is adapted to be driven by electric power to rotate about a first axis;
- a belt unit including:
- a belt casing that is rotatably connected to said main casing, that defines a track groove being open toward said power unit and surrounding said rotating shaft, and that has a plurality of engaging portions arranged around said track groove and said rotating shaft, each of said engaging portions defining a notch that is in spatial communication with said track groove, and
- an abrasive belt that is mounted in said belt casing, and that is configured to be driven by said rotating shaft;
- and a positioning unit including:
- a positioning member mounted on said main casing, being linearly movable along a second axis and non-rotatable about the first axis, and adapted for manual operation, the second axis being transverse to the first axis, and
- an engaging member that is co-movably connected to said positioning member, said positioning member being movable relative to said main casing along the second axis between an engaging position, where said engaging member extends into said notch of a selected one of said engaging portions such that said engaging member is engaged with said selected one of said engaging portions, and a releasing position, where said engaging member is disengaged from said engaging portions, an entirety of said engaging member being further away from said rotating shaft when at the engaging position than at the releasing position;
- wherein said main casing includes a main portion that has a channel extending along the second axis and having an opening formed in an outer surface of said main portion, said positioning unit being mounted to said main portion, said positioning member of said positioning unit being disposed in said channel of said main portion and having a pressing surface that is exposed outwardly from said channel for manual operation;
- wherein said engaging member of said positioning unit has a connection portion, and an engaging part that is connected to said connection portion, said engaging part extending into said track groove and said notch of the selected one of said engaging portions;
- wherein said engaging part that extends into said track groove and said notch is at a distance along the first axis away from said positioning member.
Dependencies are inferred from the claim text.