Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
1998-10-22
2001-08-14
Snow, Walter E. (Department: 2862)
Electricity: measuring and testing
Magnetic
Displacement
C324S226000, C123S349000
Reexamination Certificate
active
06275024
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a device for electronically transforming displacement of automobile accelerator lever well-suited to accelerating and deaccelerating a motor vehicle.
2. Description of the Prior Art
In a motor vehicle, an accelerator lever is usually mounted on a floor of a driver's seat to adjust an output power from an internal combustion engine. The accelerator lever is connected to a mechanical accelerator device which has a wire cable and a linkage mechanism. The mechanical type accelerator device has an assemble of many return springs and friction members so that the accelerator lever can receive a stepping force in response to a displacement of an accelerator pedal.
On the other hand, an electronic accelerator device has been introduced so that a detector device transforms the displacement of the accelerator pedal into an electronic signal to control the engine by way of ECU. The trouble with the accelerator device is that it requires a detector having slidable contacts, a friction cable to transmit a stepping force to the accelerator lever and a mechanism necessary to give a return force to the accelerator lever.
However, in either of the accelerator devices, it needs an increased number of component parts with a complicated structure, thus requires time-consuming assemble processes to a motor vehicle while occupying a larger space necessary to assemble the component parts. Because of the slidable contacts more likely to be worn with the passage of serving time, the problem with the electronic accelerator device is considered to a durability.
Therefore, the present invention has made with the above drawbacks in mind, it is a main object of the invention to provide an accelerator lever structure for an electronic type accelerator device which is capable of quickly assembling the component parts with a simplified structurewhile requiring only a limited space occupancy to assemble the component parts to a motor vehicle.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a device for electronically transforming displacement of automobile accelerator lever comprising: an accelerator lever having an accelerator pedal; a return member provided to return the accelerator lever back to an original position; a detector member provided to detect a displacement of the accelerator lever to generate an electrical signal; the detector member comprising: a magnetic body which mechanically moves in association with the accelerator lever; primary and secondary coils wound around the magnetic body in a direction in which the magnetic body mechanically moves; and the primary coil being energized to detect an electromotive force produced from the secondary coil.
With the detector member incorporated into a single cylinder-and-plunger assemble unit, it is possible to forthwith mount the detector member on between the accelerator lever and a front floor of a driver's seat of a motor vehicle.
With the detector member and the return member incorporated into the single cylinder-and-plunger assemble unit, it is possible to minimize an entire structure while reducing a space occupancy necessary to assemble the component parts to the motor vehicle.
With a relatively small structure, it is possible to adjust a stepping force against the accelerator pedal.
With no sliding contacts provided herein, it is possible to enhance the durability with no substantial wear.
With the use of dual plungers, it is possible to cope with a failure of the detector system by comparing outputs based of displacements of the two plungers.
REFERENCES:
patent: 4112885 (1978-09-01), Iwata et al.
patent: 5563355 (1996-10-01), Pluta et al.
Amano Ayamitsu
Goto Masaya
Kunita Yasuhiko
Sugiura Akehito
Uneme Masato
Chuo Hatsujo Kabushiki Kaisha
Snow Walter E.
Sughrue Mion Zinn Macpeak & Seas, PLLC
LandOfFree
Device for electronically transforming displacement of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for electronically transforming displacement of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for electronically transforming displacement of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2495865