Abstract: An object of the present invention is to provide a self-propelled electronic device that can be downsized and can improve in performance in climbing onto a floor level difference. A wheel support structure for the self-propelled electronic device, the wheel support structure characterized by comprising: a drive wheel configured to allow a housing to travel; a support portion fixed in the housing and configured to support the drive wheel position-changeably in a linear direction inclined from a vertical line; and a biasing member configured to bias the drive wheel toward a bottom side of the housing in the linear direction.

Abstract: Provided is a wheel support structure for self-propelled electronic device which takes safety into account, by not jumping out vigorously with strong force when a drive wheel protrudes to the exterior. The wheel support structure for self-propelled electronic device is characterized by comprising; a drive wheel which supports and drives a housing on a floor surface; a swinging support unit which rotatably supports the drive wheel and mounts the drive wheel to the bottom part of the housing so as to be able to swing in a vertical direction about the swinging axle; and a biasing mechanism which includes a biasing member which biases the drive wheel so as to swing downwards, wherein the biasing mechanism biases the winging support unit downwards by means of the biasing member in a state in which the housing is placed on the floor, and the biasing towards the swinging support unit by the biasing member is released in a state in which the drive wheel is not in contact with the floor surface.

Abstract: The subject of the invention is to easily detect whether the dust collection amount is full. The present invention provide a charging-type electric vacuum cleaner comprising: a ventilator for suctioning air containing dust through a suction port; a motor for driving the ventilator; a dust collection section for filtering the suctioned air and capturing the dust; a storage battery; a switching element for connecting the storage battery to the motor; a current detecting section for detecting an electric current Ia flowing to the motor; a warning section for warning when a dust collection amount in a dust collection section is full; and a control section for operating the switching element to drive the motor, and for detecting a terminal voltage Vb of the storage battery and the electric current Ia to operate the warning section when Vb?V1 and Ia?I1 (V1 and I1 are preset values) are established.

Abstract: The subject of the invention is to easily detect whether the dust collection amount is full. The present invention provide a charging-type electric vacuum cleaner comprising: a ventilator for suctioning air containing dust through a suction port; a motor for driving the ventilator; a dust collection section for filtering the suctioned air and capturing the dust; a storage battery; a switching element for connecting the storage battery to the motor; a current detecting section for detecting an electric current Ia flowing to the motor; a warning section for warning when a dust collection amount in a dust collection section is full; and a control section for operating the switching element to drive the motor, and for detecting a terminal voltage Vb of the storage battery and the electric current Ia to operate the warning section when Vb?V1 and Ia?I1 (V1 and I1 are preset values) are established.