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US 10,766,162 B2Granted
Portable machining device
AssigneeMakita Corporation
InventorsHiromu Goto, Yuki Wada
Life of this patent
Estimating the term…
Abstract
When the protruding length of a cutting blade 11 protruding below a lower surface of a base 2 of a portable machining device 1 is set to its maximum length, at least a part of a controller 31 for controlling an electric motor 12 is configured to be located behind a handle 14 in the front-to-rear direction. Furthermore, the controller 31 is disposed so as to be tilted in the left-to-right direction or in the up-to-down direction with respect to the cutting blade 11. Because of this configuration, the height of the handle 14 can be restricted and at the same time the controller 31 can be disposed in a compact manner.
Claims14
A portable machining device, comprising:
- a base with which a material to be cut is brought into contact;
- and
- a machining device main body which is supported above and movable relative to an upper surface of the base and includes a handle, a motor case and a controller housing;
- wherein:
- the handle (a) includes (1) a front end that is integrally formed with the motor case, (2) a second end that is integrally formed with the controller housing and (3) a front grip that extends in a left-to-right direction and (b) has a loop shape between the front end and the second end;
- wherein:
- the machining device main body (a) includes a rotary cutting blade that is rotated by using an electric motor serving as a drive source, (b) is configured to be moved in an up-to-down direction to protrude the cutting blade below a lower surface of the base such that the cutting blade cuts into the material to be cut to perform a cutting task, and (c) is supported so as to be swung in the up-to-down direction about a swing fulcrum that is disposed behind a rotation center of the cutting blade;
- and
- when the protruding length of the cutting blade protruding below the lower surface of the base is set to a maximum, (1) a controller for controlling the electric motor is tilted so as to be displaced in the upward direction as extending from the front to the rear in a side view and (2) a part of the controller is located behind the handle and the swing fulcrum in a front-to-rear direction.
6 more elements
A portable machining device, comprising:
- a base with which a material to be cut is brought into contact;
- and
- a machining device main body that (1) is supported above an upper surface of the base so as to be swung in an up-to-down direction about a swing fulcrum and (2) includes a handle, wherein:
- the machining device main body (1) includes a rotary cutting blade that is rotated by using an electric motor serving as a drive source and (2) is configured to be moved in the up-to-down direction to protrude the catting blade below a lower surface of the base such that the cutting blade cuts into the material to be cut to perform a cutting task;
- the swing fulcrum is disposed behind a rotation center of the cutting blade;
- a controller for controlling the electric motor that is disposed such that at least a part of the controller is on an opposite side of the swing fulcrum with from the electric motor in a front-to-rear direction;
- and
- when the protruding length of the cutting blade protruding below the lower surface of the base is at a maximum, (1) the controller is tilted so as to be displaced in the upward direction and extending from the front to the rear in a side view and (2) a part of the controller is located behind the handle and the swing fulcrum in a front-to-rear direction.
5 more elements
A portable machining device, comprising:
- a base with a rectangular flat plate shape where the lower underside surface of the base is brought into contact with a material to be cut;
- a machining device main body that is supported above and movable relative to an upper surface of the base;
- and
- a handle that is integrally formed with the machining device main body, and is surrounded by a holding area where a user may grasp the handle, wherein:
- the machining device main body (a) includes a rotary cutting blade that is rotated by using an electric motor serving as a drive source, wherein the motor has a surrounding motor case with intake holes, (b) is configured to be moved in an up-to-down direction to protrude the cutting blade below a lower surface of the base such that the cutting blade cuts into the material to be cut to perform a cutting task, wherein the cutting blade is covered by a cutting blade cover such that its upper periphery is enclosed by the cutting blade cover, which is supported on upper surface side of the base;
- the machining device main body is supported so as to be swung in the up-to-down direction about a swing fulcrum that is disposed behind a rotation center of the cutting blade;
- the machining device main body is biased to swing in an upwards direction by a compression spring interposed between the machining device main body and the base in the up-to-down direction, where said spring is at the center of the base in a front-to-rear direction;
- when a protruding length of the cutting blade protruding below the lower surface of the base is set to a maximum, a part of a controller for controlling the electric motor is configured to be located behind the handle in the front-to-rear direction, where the controller has a rectangular shape and is tilted so as to be displaced in the upward direction as extending from the front to the rear in a side view;
- and
- a part of the controller is located behind the swing fulcrum in the front-to-rear direction.
7 more elements
Dependencies are inferred from the claim text.