Portable machining device

Patent metadata

Field	Value
Publication number	US-2018290221-A1
Application number	US-201815921078-A
Country	US
Kind code	A1
Filing date	Mar 14, 2018
Priority date	Apr 5, 2017
Publication date	Oct 11, 2018
Grant date	—

Abstract

A communication adapter 31 for conducting radio communication between a portable machining device 1 and a dust collector 40 , such that the dust collector 40 may operate synchronously with the portable machining device 1 with respect to a start/stop operation when performing a cutting task is detachably incorporated in a handle 20 of the portable machining device 1 . Because of this arrangement, a high level of dust-proof ability as well as ease of maneuverability in attaching and detaching the communication adapter 31 can be achieved.

First claim

What is claimed is:

1 . A portable machining device, comprising:
a base with which a material to be cut is brought into contact; a machining device main body which is supported above an upper surface of the base; and a handle that is formed integrally with the machining device main body, wherein: the machining device main body includes a cutting blade that is rotated by an electric motor serving as a drive source, the cutting blade being moved to protrude below a lower surface of the base such that a protruding portion of the cutting blade is cut into the material to be cut for performing a cutting task; an adapter for conducting radio communication with an incidental device of the portable machining device is removably provided in an interior of the machining device main body; and the incidental device is started and stopped in a manner such that it operates synchronously with a start and stop operation of the portable machining device.

2 . The portable machining device according to claim 1 , wherein the adapter for conducting radio communication is disposed above the electric motor.

3 . The portable machining device according to claim 1 , wherein the adapter for conducting radio communication is removed from the machining device main body by moving the adapter in a direction away from the cutting blade.

4 . The portable machining device according to claim 1 , wherein the adapter for conducting radio communication is disposed at a front portion of the handle.

5 . The portable machining device according to claim 1 , wherein a controller for controlling radio communication is disposed over the electric motor.

6 . The portable machining device according to claim 1 , wherein the adapter is disposed at a lateral side of the handle on a side of the electric motor so as to be close in a direction right above the electric motor.

7 . The portable machining device according to claim 1 , wherein a controller for controlling the radio communication is housed at the rear end portion of the handle.

8 . A portable machining device, comprising:
a base with a rectangular flat plate shape where the lower underside surface of said base is brought into contact with a material to be cut; a machining device main body which is supported above 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 includes a rotary cutting blade that is rotated by an electric motor serving as a drive source, the cutting blade being moved to protrude below a lower surface of the base such that a protruding portion of the cutting blade is cut into the material to be cut for performing a cutting task, wherein the machining device main body is configured to be swung in the up-to-down direction about a swing fulcrum, such that the cutting depth of the cutting blade with respect to the base can be changed; the portable machining device further comprises a detachable adapter for conducting radio communication between the portable machining device and a remotely provided incidental device, where the adapter has a rectangular prismatic body and is provided to fit within the interior of the machining main body; and the incidental device is started and stopped in a manner such that it operates synchronously with a start and stop operation of the portable machining device.

9 . The portable machining device according to claim 8 , wherein the adapter for conducting radio communication is disposed above the electric motor.

10 . The portable machining device according to claim 8 , wherein the adapter for conducting radio communication is disposed within the interior of the front end portion of the handle on an opposite side to the cutting blade, such that the communication adapter may fully fit within the interior of the portable machining device.

11 . The portable machining device of claim 10 , wherein the communication adapter is fit within a complementary rectangular shaped hole in the interior of the front end portion of the handle on an opposite side to the cutting blade, wherein said hole has rounded edges, and has electrical sockets within the interior of the hole, to receive electrical connectors of the communication adapter at the end of the adapter on a side of the cutting blade, when the adapter has been fully inserted into the handle.

12 . The portable machining device of claim 11 , wherein the handle also comprises an affixed cap, wherein once the communication adapter has been inserted and fit into the hole in the interior of the handle, the cap may fully cover the opening into which the adapter has been inserted.

13 . The portable machining device according to claim 8 , wherein the adapter for conducting radio communication may be removed from the device main body by moving the adapter in a direction opposite to the cutting blade.

14 . The portable machining device according to claim 8 , wherein a controller for controlling radio communication is disposed over the electric motor.

15 . The portable machining device according to claim 8 , wherein the adapter is disposed at a lateral side relative to the handle, spaced apart from the handle, adjacent to the motor so as to be close in a direction right above the electric motor.

16 . The portable machining device of claim 9 , wherein the communication adapter is fit within a complementary rectangular shaped hole at a lateral side relative to the handle, spaced apart from the handle, on a side of the electric motor, wherein said hole has rounded edges, and has electrical sockets within the interior of the hole, to receive electrical connectors of the communication adapter at the end of the adapter on a side of the cutting blade, when the adapter has been fully inserted into the handle.

17 . The portable machining device of claim 16 , wherein the handle also comprises an affixed cap, wherein once the communication adapter has been inserted and fit into the hole, the cap may fully cover the opening into which the adapter has been inserted.

18 . The portable machining device according to claim 8 , wherein a controller for controlling the radio communication is housed at the rear end portion of the handle.

19 . The portable machining device according to claim 8 , wherein outside air may flow into a housing when the motor is driven, through a plurality of intake holes on the motor case, wherein the housing houses an electrical component including a microprocessor responsible for controlling the electric motor and its power supply, the plurality of intake holes disposed immediately below the communication controller as part of the motor case; and
the outside air flowing through the intake holes traverses a structural flow path within the motor case also including a cooling fan, and the outside air eventually flows to the housing present at the rear end of the handle from the motor case through a ventilation hole.

20 . The portable machining device according to claim 19 , wherein a trigger-type pullable switch lever is provided on the upper portion on the inner circumference of the handle, such that the electric motor may be driven to rotate the cutter blade by the controller, when the switch lever, and an additionally provided lock-off lever above the switch lever within the interior of the handle, are pulled and pressed, respectively, in a simultaneous manner, wherein the electrical circuitry of the device is comprised

Assignees

• Makita Corp

Inventors

• Ogino Yohei
• Okouchi Katsumi
• Goto Hiromu
• Wada Yuki

Classifications

• B25F5/00 Primary

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• B27B5/29

  Details; Component parts; Accessories · CPC title

• B27G19/04

  for manually-operated power-driven circular saws · CPC title

• B27G3/00

  Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants {(B23Q11/0042 takes precedence)} · CPC title

• B27B9/00 Primary

  Portable power-driven circular saws for manual operation (details or components, e.g. handles, casings, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title