Abstract: A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, a hydraulic actuator that drives driven parts including the lower traveling body and the upper turning body, a main pump that supplies hydraulic oil to the hydraulic actuators, a pump motor that drives the main pump, and a power storage device that supplies electric power to the pump motor. When the charging cable is connected to the charging port during the operation of the shovel, the shovel causes the hydraulic actuators to shift to the inoperable state. When the charging cable is connected to the charging port, the shovel does not start the pump motor even if an input for starting the pump motor is received from a user.

Abstract: An excavator includes a lower traveling body; an upper turning body turnably mounted to the lower traveling body; an actuator configured to drive a driven part including the lower traveling body and the upper turning body; and a power storage device mounted in the upper turning body and configured to serve as an energy source for driving the actuator. The power storage device includes a plurality of power storage modules stacked in a vertical direction, each of the plurality of power storage modules including a power storage part and a housing configured to house the power storage part. The housings of power storage modules among the plurality of power storage modules that are adjacent to each other in the vertical direction, are coupled to each other.

Abstract: An excavator including a lower traveling body; an upper turning body turnably mounted to the lower traveling body; a hydraulic actuator configured to drive a driven part including the lower traveling body and the upper turning body; a hydraulic pump configured to supply hydraulic oil to the hydraulic actuator; a motor configured to drive the hydraulic pump; and a power storage device configured to supply power to the motor. The power storage device is mounted at a right front portion of the upper turning body. The hydraulic pump and the motor are mounted at a rear portion of the upper turning body.

Abstract: An excavator includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, actuators configured to drive driven portions including the lower traveling body and the upper turning body, a power storage mounted on the upper turning body and used as an energy source for driving the actuators, a cooling circuit configured to cool the power storage, and a fan mounted on the upper turning body and configured to blow air to a radiator and a condenser for cooling the radiator and the condenser. Further, the power storage is arranged such that the power storage is apart from a path in which air outside the upper turning body, by an operation of the fan, is introduced into inside the upper turning body, passes across the heat exchanging device, and is discharged to the outside of the upper turning body.

Abstract: An improved push button type tuner is disclosed which assures that an operator can selectively tune to one of two preset radio frequencies merely by actuating a single push button. The push button type tuner includes a plurality of channel selecting mechanisms each of which comprises an actuating shaft with a push button fixedly secured thereto and two channel selecting shafts disposed by both the sides of the actuating shaft. The actuating shaft and the channel selecting shafts are supported so as to move between the fore inoperative position and the rear operative position. The actuating shaft includes a main gear and a shifting lever which performs shifting operation in such a manner that the pair of channel selecting shafts are alternately displaced to the rear operative position at every time when a cycle of foreward and rearward movements of the actuating shaft between the fore inoperative position and the rear operative position is achieved.