Hall effect sensor assembly
First Claim
1. An apparatus for controlling operation of a skid steer loader having a frame, a seat supported by the frame, wheels supporting the frame, a drive mechanism for driving the wheels, a lift arm structure manipulated by power actuators, and a power circuit for controlling the power actuators, the apparatus comprising:
- a seat bar coupled to the frame for movement relative to the seat;
a first Hall effect sensor assembly, coupled to the seat bar, for sensing position of the seat bar and providing a seat bar sensor signal indicative of the position of the seat bar;
a second Hall effect sensor assembly, coupled to the seat, for sensing seat position and providing an occupancy signal indicative of the seat position;
a controller, coupled to the first Hall effect sensor assembly and the second Hall effect sensor assembly, for receiving the seat bar sensor signal and the occupancy signal and providing a traction output signal, a power output signal, and a display output signal, based on the seat bar sensor signal and the occupancy signal;
traction lock means, coupled to the drive mechanism and the controller to receive the traction output signal, for locking the drive mechanism to preclude the drive mechanism from driving the wheels based on the traction output signal;
power lock means, coupled to the power circuit and the controller to receive the power output signal, for locking out operation of the power actuators based on the power output signal; and
display means, coupled to the controller, for displaying indicia indicative of an operational state based on the display output signal.
3 Assignments
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Accused Products
Abstract
A sensor for a power machine includes a seat bar which is movably coupled relative to a seat on the power machine. A magnet and a Hall effect sensor are coupled to the seat bar and to the power machine so that they are movable relative to one another based on movement of the seat bar. The seat bar is movable from a first position to a second position. The Hall effect sensor provides a position sensing signal indicating when the seat bar is in one of the first or second positions.
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Citations
9 Claims
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1. An apparatus for controlling operation of a skid steer loader having a frame, a seat supported by the frame, wheels supporting the frame, a drive mechanism for driving the wheels, a lift arm structure manipulated by power actuators, and a power circuit for controlling the power actuators, the apparatus comprising:
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a seat bar coupled to the frame for movement relative to the seat; a first Hall effect sensor assembly, coupled to the seat bar, for sensing position of the seat bar and providing a seat bar sensor signal indicative of the position of the seat bar; a second Hall effect sensor assembly, coupled to the seat, for sensing seat position and providing an occupancy signal indicative of the seat position; a controller, coupled to the first Hall effect sensor assembly and the second Hall effect sensor assembly, for receiving the seat bar sensor signal and the occupancy signal and providing a traction output signal, a power output signal, and a display output signal, based on the seat bar sensor signal and the occupancy signal; traction lock means, coupled to the drive mechanism and the controller to receive the traction output signal, for locking the drive mechanism to preclude the drive mechanism from driving the wheels based on the traction output signal; power lock means, coupled to the power circuit and the controller to receive the power output signal, for locking out operation of the power actuators based on the power output signal; and display means, coupled to the controller, for displaying indicia indicative of an operational state based on the display output signal. - View Dependent Claims (2, 3, 4, 5)
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6. A sensor on a power machine having a seat, the sensor comprising:
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a seat bar mounted to the power machine for pivotal movement relative to the power machine between a first position and a second position; a Hall effect sensor assembly coupled to the power machine and the seat bar to sense movement of the seat bar between the first and second positions; the Hall effect sensor assembly including; a magnet; a Hall effect sensor; a magnet housing coupled to one of the seat bar and the frame, the magnet being supported by the magnet housing; and the Hall effect sensor being coupled to another of the seat bar and the frame proximate the magnet housing so the Hall effect sensor senses when the seat bar is in the first position based on a position of the magnet. - View Dependent Claims (7, 8, 9)
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Specification