Kubota Corporation

Kengo Miyazaki

Tetsuya Yoshida

Suguru Shiiguchi

Takayoshi Takata

Kenichiro Yoshida

A lock mechanism that is switchable between a locking state in which a movement of an operation member of a working machine is restricted and an unlocking state includes an engagement portion to rotate together with the operation member, a lock body including an engaged portion at its intermediate portion, a lock support shaft that supports the lock body rotatably, and a driving portion that applies a driving force to the lock body. The lock body is moved by the applied driving force to a position in which the engaged portion is in engagement with the engagement portion and a position in which the engaged portion is not in engagement with the engagement portion.

Working machine

A working machine includes: a machine body; an operator's seat; an operation device to pivot on a pivot shaft that extends in a width direction; and a working device to be operated using the operation device. The operation device includes an operation lever and a control valve to be operated using the operation lever and connected to hydraulic hoses. The control valve includes a valve member to be actuated by operating the operation lever, and a block containing fluid passages through which fluid selectively flows upon actuation of the valve member. The fluid passages bend such that first ports in an upper surface of the block facing the valve member and second ports in a peripheral surface extending from a periphery of the upper surface are in communication with each other. The hydraulic hoses are connected to the second ports and extend in a direction away from the peripheral surface.

Growing community of inventors

Osaka, Japan

Kengo Miyazaki