Back to results
US 9,853,586 B2Granted
Motor driven appliance
AssigneeMakita Corporation
InventorsTakuya Kusakawa, Goshi Ishikawa, Motohiro Omura
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMakita Corporation
InventorsTakuya Kusakawa, Goshi Ishikawa, Motohiro Omura
Estimating the term…
A motor driven appliance comprises a battery, a motor, at least one switch, a control unit, an abnormality detection unit, a determination unit, and a processing unit. The at least one switch comprises an operation switch. The control unit controls driving of the motor by controlling power supply from the battery to the motor when the operation switch is turned on. The abnormality detection unit detects abnormality of the appliance. The determination unit determines whether the detected abnormality is a first type abnormality that can be cleared when the operation switch is switched from on to off, or is a second type abnormality that cannot be cleared even if the operation switch is merely switched from on to off. The processing unit is configured to perform a specific process when it is determined that the detected abnormality is the second type abnormality.
A motor driven appliance comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Including safety or protection arrangements: against overtemperature
Details or components of portable power-driven tools not particularly related to the
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: including safety or protection arrangements
Including safety or protection arrangements: against overcurrent
About 8 years 9 months of term left · ends 23 Jul 2035 (estimated)
This application claims the benefit of Japanese Patent Application No. 2014-149769 filed Jul. 23, 2014 in the Japan Patent Office, and the entire disclosure of which is incorporated herein by reference.
The present disclosure relates to a motor driven appliance operated by a battery.
Some of a variety of motor driven appliances operated by a battery such as, for example, a rechargeable driver drill or a rechargeable grass mower, are provided with a function of detecting and notifying an abnormality. A user using this kind of motor driven appliance, when an abnormality takes place, can acknowledge the abnormality (for example, see Japanese Patent Application Publication No. 2011-161602).
Exemplified embodiments of the present disclosure will be described below by way of example with reference to the accompanying drawings in which:
FIG. 1 is a side view showing an appearance of a motor driven appliance of a first embodiment of the present disclosure;
FIG. 2 is a circuit diagram of an electrical system in the motor driven appliance of the first embodiment;
As shown in FIG. 1, a motor driven appliance 1 of the first embodiment is configured as an electric power tool. Hereinafter, the motor driven appliance is referred to as “appliance”. Specifically, the appliance 1 is configured as a rechargeable driver drill. The appliance 1 comprises a main body 2, a handle part 3, and a battery pack 4.
A motor M1 (see FIG. 2) to be described later is accommodated in a rear portion of the main body 2 (left side in FIG. 1). A not shown driving force transmission mechanism is accommodated in a front portion of the main body 2 (right side in FIG. 1). A sleeve 5 for mounting a not shown tool bit (e.g., driver bit, etc.) is rotatably projected at a front end of the main body 2. To the sleeve 5, a rotational driving force of the motor M1 is transmitted over the driving force transmission mechanism and the like.
The handle part 3 is extended downward of the main body 2. To a lower end of the handle part 3, the battery pack 4 is detachably attached. In order to explain details of the handle part 3, FIG. 1 shows the appliance 1 in which one side of the handle part 3 is removed so that an interior of the handle part 3 can be visible.