Back to results
US 2020/0248807 A1Published application
Drive device for pto shaft of working machine
AssigneeKubota Corporation
InventorsManabu TOGO, Hiroshi MIYAKE, Ryuji KATAOKA, Tsuyoshi GONO
Life of this patent
Estimating the term…
Abstract
A drive device for a PTO shaft includes a parking switch to detect a parking state of a vehicle body, a permission switch constituted of a self-returning switch and connected to the parking switch, the permission switch being configured to be switched to permit driving a PTO shaft, the PTO shaft being configured to be driven by a power of a prime mover disposed on the vehicle body, and a first switch device to be switched to enable the PTO shaft to be driven when the permission switch is switched to permit driving the PTO shaft under a state where the parking switch detects the parking state of the vehicle body.
Claims4
A drive device for a PTO shaft comprising:
- a parking switch to detect a parking state of a vehicle body;
- a permission switch constituted of a self-returning switch and connected to the parking switch, the permission switch being configured to be switched to permit driving a PTO shaft, the PTO shaft being configured to be driven by a power of a prime mover disposed on the vehicle body;
- a first switch device to be switched to enable the PTO shaft to be driven when the permission switch is switched to permit driving the PTO shaft under a state where the parking switch detects the parking state of the vehicle body;
- an on-off switch to switch the driving of the PTO shaft to be turned on and to be turned off;
- a seat switch to detect an operator seated on an operator seat;
- and
- a second switch device connected to an output terminal of the first switch device and to an output terminal of the seat switch, the second switch device being configured to be switched to enable the PTO shaft to be driven based on an input from the output terminal of the first switch device or from the output terminal of the seat switch,
- wherein a first input terminal of the first switch device is connected to an output terminal of the parking switch or to an output terminal of the permission switch, and
- a second input terminal of the first switch device is connected to an output terminal of the on-off switch.
6 more elements
A drive device for a PTO shaft comprising:
- a parking switch to detect a parking state of a vehicle body;
- a permission switch constituted of a self-returning switch and connected to the parking switch, the permission switch being configured to be switched to permit driving a PTO shaft, the PTO shaft being configured to be driven by a power of a prime mover disposed on the vehicle body;
- a first switch device to be switched to enable the PTO shaft to be driven when the permission switch is switched to permit driving the PTO shaft under a state where the parking switch detects the parking state of the vehicle body;
- an on-off switch to switch the driving of the PTO shaft to be turned on and to be turned off;
- a seat switch to detect an operator seated on an operator seat;
- a second switch device including
- a third input terminal, the second switch device being configured to be switched to enable the PTO shaft to be driven upon an input to the third input terminal;
- a first circuit including the parking switch and the permission switch connected in series, the parking switch including an output terminal connected to a first input terminal of the first switch device, the permission switch including an output terminal connected to the first input terminal of the first switch device;
- a second circuit including
- the on-off switch having an output terminal connected to a second input terminal of the first switch device, and
- the first switch device having an output terminal connected to the third input terminal of the second switch device;
- and
- a third circuit including
- the seat switch having an output terminal connected to the third input terminal of the second switch device.
11 more elements
A drive device for a PTO shaft comprising:
- a parking switch to detect a parking state of a vehicle body;
- a first switch arranged on an operation portion disposed on the vehicle body, the first switch being configured to be switched to enable the PTO shaft to be driven, the PTO shaft being disposed on the vehicle body;
- a second switch arranged on a portion different from the operation portion, the second switch being configured to be switched to enable the PTO shaft to be driven;
- and
- a controller to drive the PTO shaft when any one of the first switch and the second switch is turned on,
- wherein
- the controller includes
- a first controller to stop driving the PTO shaft when the parking switch does not detect the parking state of the vehicle body under a state where the second switch is turned on to drive the PTO shaft.
5 more elements
Dependencies are inferred from the claim text.