Abstract: A server system for an always-on connection includes: a plurality of always-on connection processing parts; and a controller. Each of the always-on connection processing parts includes a plurality of always-on connection execution parts, and the controller is configured to execute: a receiving process to receive a first request for the always-on connection from a terminal device; a determining process to determine a target always-on connection processing part, among the always-on connection processing parts according to the first request, the target always-on connection processing part being one always-on connection processing part to establish the always-on connection with the terminal device; and a sending process to send to the terminal device a destination data indicating a destination of the second request for the always-on connection after determining the target always-on connection processing part, the destination data also indicating the target always-on connection processing part.

Abstract: An autonomous travel work machine includes a main body and a wheel, and is configured to execute a predetermined operation on an operation target while causing the main body to autonomously travel with the wheel. The autonomous travel work machine includes: an operation unit having a shape projecting from an upper face of the main body, the operation unit being operated by being pressed from an upper face side; and a protection unit located at a front side in a traveling direction of the main body relative to the operation unit, the protection unit being disposed at a height equal to or higher than an upper end of the operation unit.

Abstract: A suspension mechanism has a tube member that is movably attached to an attachment shaft, a first attachment shaft retaining member provided on the chassis to swingably retain the attachment shaft with an outer peripheral surface of the tube member abutted on its inside surface, a shaft lower end portion of slip surface shape provided at lowermost part of the attachment shaft, a second attachment shaft retaining member provided on the chassis below the first attachment shaft retaining member and having a vertex equivalent section and a curve equivalent section to retain the attachment shaft with the slip surface shape shaft lower end portion abutted onto the vertex or curve equivalent section. The curve equivalent section is defined as a portion of a vertical cross section that passes through the vertex equivalent section is formed in an arc shape.

Abstract: The autonomous travel work machine executes the predetermined operation on the operation target while autonomously traveling, and includes: a driving unit driving a wheel to cause a main body to travel; a reception opening disposed on a side face of the main body regarding a traveling direction of the main body; an operation unit mounted on the main body and executing the predetermined operation on the operation target; and a control unit that controls the driving unit switchably between a first operation of causing the main body to travel against the operation target and executing the predetermined operation by the operation unit on the operation target and a second operation of moving the main body to a position where the operation target can be received in the reception opening and executing the predetermined operation by the operation unit on the operation target received in the reception opening.

Abstract: A station for a lawn mower for charging a storage battery included in the lawn mower that autonomously travels and perform specified work, the station including: a base that stores the lawn mower; and a power supply device that supplies electric power to the storage battery included in the lawn mower when the lawn mower is stored in the base, in which the power supply device or the base includes power supply means for supplying electric power from the power supply device to power receiving means for supplying received electric power to the storage battery included in the lawn mower, and the power supply device is attachable to and detachable from the base.

Abstract: A controller of a server is configured to: in a state where first combination data including first account data and first device-identification data is stored in a memory of the server in association with each other, receive a first request including second account data from a first external device; determine whether priority assigned to the second account data is higher than priority assigned to the first account data; based on a determination that the priority assigned to the second account data is higher than the priority assigned to the first account data, replace the existing first account data with the second account data, thereby storing the second account data in association with the first device-identification data; and based on a determination that the priority assigned to the second account data is not higher than the priority assigned to the first account data, not replace the existing first account data.

Abstract: A work machine that can achieve size reduction and weight reduction of a housing. The work machine includes a housing, a motor fixed to an upper surface of the housing, a battery connected with the motor, and a blade driven by the motor. The motor is covered by a motor case fixed to the upper surface of the housing. The motor case is fixed to the upper surface of the housing in a different part from the motor.

Abstract: With the object of providing a battery mounting structure and working machine which can improve the degrees of freedom in layout of constituent components including a battery, without restrictions in the mounting direction of the battery, it is configured to include a placement member provided at an upper part of an electrical component, a battery which is provided detachably to the placement member and drives the electrical component, and a connection member which extends from the electrical component towards the battery and can electrically connect the electrical component and the battery.

Abstract: An autonomous travel work machine includes a main body and a wheel, and is configured to execute a predetermined operation on an operation target while causing the main body to autonomously travel with the wheel. The autonomous travel work machine includes: an operation unit having a shape projecting from an upper face of the main body, the operation unit being operated by being pressed from an upper face side; and a protection unit located at a front side in a traveling direction of the main body relative to the operation unit, the protection unit being disposed at a height equal to or higher than an upper end of the operation unit.

Abstract: The autonomous travel work machine executes the predetermined operation on the operation target while autonomously traveling, and includes: a driving unit driving a wheel to cause a main body to travel; a reception opening disposed on a side face of the main body regarding a traveling direction of the main body; an operation unit mounted on the main body and executing the predetermined operation on the operation target; and a control unit that, controls the driving unit switchably between a first operation of causing the main body to travel against the operation target and executing the predetermined operation by the operation unit on the operation target and a second operation of moving the main body to a position where the operation target can be received in the reception opening and executing the predetermined operation by the operation unit on the operation target received in the reception opening.

Abstract: A grass mower includes: a main body; a working unit driving motor (drive source) mounted on the main body; an output shaft that projects downward from the working unit driving motor and is rotated by the working unit driving motor; a mowing blade disk mounted to the output shaft; and an upper guard provided to cover the output shaft, the output shaft being between the mowing blade disk and the main body, wherein the upper guard includes a cutout portion for exposing the mowing blade disk at a rear end in the traveling direction of the main body.