Electric working machine with operating rod
An electric working machine with an operating rod includes an electric motor on the base end of the operating rod, a working device on the head end of the operating rod, and a power transmission shaft passing through the inside of the operating rod to transmit power from the electric motor to the working device. The working device includes a blade member and is pivotally supported on the head end of the operating rod to be able to take a storage posture. A detection switch on the head end of the operating rod detects the storage posture. A controller on the base end of the operating rod controls the operation of the electric motor. A lead wire in the operating rod transmits a detection signal from the detection switch to the controller. The controller prevents the electric motor from being driven when the detection switch detects the storage posture.
1 . An electric working machine with an operating rod comprising:
an electric motor provided on a base end of the operating rod;
a working device provided on a head end of the operating rod; and
a power transmission shaft passing through an inside of the operating rod and configured to transmit power from the electric motor to the working device, wherein:
the working device includes a blade member and is pivotally supported on the head end of the operating rod to be able to take a storage posture in which the blade member folds along the operating rod;
a first detection switch is provided on the head end of the operating rod to detect the storage posture;
a controller is provided on the base end of the operating rod to control the operation of the electric motor;
a lead wire is provided in the operating rod to transmit a detection signal from the first detection switch to the controller;
the controller includes a processor configured to prevent the electric motor from being driven when the first detection switch detects the storage posture of the working device;
at least one additional detection switch is provided in addition to the first detection switch to detect the storage posture; and
the processor permits the electric motor to drive when the first and at least one additional detection switch all detect that the electric working machine is safe to operate.
2 . The electric working machine with an operating rod according to claim 1 , wherein the first detection switch is operated when the working device is rotated around a shaft and folded within a preset angle range.
3 . The electric working machine with an operating rod according to claim 2 , a further comprising an operating member configured to rotate together with the working device or a part of the working device to operate the first detection switch.
4 . The electric working machine with an operating rod according to claim 2 , wherein the first detection switch is a proximity sensor, and further comprising an operating member configured to rotate together with the working device or a part of the working device and to operate the first detection switch when the operating member approaches the first detection switch.
5 . The electric working machine with an operating rod according to claim 1 , wherein the first detection switch is attached to an outside of a fixed gearcase provided on the head end of the operating rod, and a connecting terminal of the lead wire is pulled out from the operating rod and connected to the first detection switch.
6 . The electric working machine with an operating rod according to claim 1 , wherein a cover member is provided on an outside of the head end of the operating rod to cover the first detection switch.