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Grand Haven Stamped Products, Division of Jsj Corporation

William C Staker

Robert D Brock

An electronic throttle control pedal pivotally couples a lever arm to a pedal beam and biases the beam for resisting an applying force to the pedal beam and for biasing sliding surfaces together in frictional contact. A compression spring carried between a mounting bracket and the lever arm biases the pedal beam toward an idle position while at the same time causing a frictional force between the frictional surfaces, such that displacing the pedal beam with an applying force compresses the spring which increases a frictional force between the friction surfaces with an increasing displacement of the pedal beam distal end, and reducing the displacement through a retracting force on the pedal beam distal end expands the compression spring and returns the pedal beam to the idle position through a hysteresis force response for the pedal beam displacement. The hysteresis may be tuned by modifying element dimensions of the pedal.

Electronic pedal assembly and method for providing a tuneable hystersis force

A position sensor for an electronic control pedal is carried by the pedal mounting bracket and includes a linear potentiometer having a slider operable along a substrate in only a linear direction for providing an output voltage representative of slider displacement. A drive arm is connected to the pedal shaft for rotation during pedal movement. A coupler connected to the slider is slidable within a slot in the drive arm for providing the linear displacement through a rotational movement of the shaft. The drive arm has an inner arm in a telescoping connection with an outer arm for setting the drive arm at a desired length after potentiometer calibration. The longitudinal axis of the slot is at an non-zero angle to the longitudinal axis of the drive arm for desensitizing the sensor calibration and adjustment process.

Electronic control pedal position sensing device assembly method

A pedal construction includes an adjustable pedal subassembly having a lower pedal member adjustably supported on an upper pedal member by an adjustment device. The lower pedal member includes a pedal lever and a lever mount including abutting mounting sections forming a fixed joint. The mounting section of the lever mount has a channel with sharp edges and the mounting section of the lever has a ridge interference fit into the channel. The sharp edges shave marginal material from sides of the ridge when the ridge is forced into the channel, but the ridge has depressions adjacent its bottom that receive the shaved marginal material when the ridge is forced into the channel. Fasteners extend through the ridge and channel to hold the assembly together, with the ridge and channel interface forming a primary mechanical structure providing torsional strength to the joint.

Pedal with tongued connection for improved torsional strength

An electronic throttle control pedal pivotally couples a lever arm to a pedal beam and biases the beam for resisting an applying force to the pedal beam and for biasing sliding surfaces together in frictional contact. A compression spring carried between a mounting bracket and the lever arm biases the pedal beam toward an idle position while at the same time causing a frictional force between the frictional surfaces, such that displacing the pedal beam with an applying force compresses the spring which increases a frictional force between the friction surfaces with an increasing displacement of the pedal beam distal end, and reducing the displacement through a retracting force on the pedal beam distal end expands the compression spring and returns the pedal beam to the idle position through a hysteresis force response for the pedal beam displacement. The hysteresis can be tuned by modifying element dimensions of the pedal.

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Spring Lake, MI, United States of America

William C Staker