Auxiliary system for an automobile parked on a slope

• US 6,913,121 B2
• Filed: 11/19/2002
• Issued: 07/05/2005
• Est. Priority Date: 12/18/2001
• Status: Expired due to Fees

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Park, Sung-Ho
• Primary Examiner(s): Nguyen, Xuan Lan
• Assistant Examiner(s): TORRES WILLIAMS, MELANIE
• Application Number:
  US10/300,125
• Publication Number:
  US 20030111901A1
• Time in Patent Office: 959 Days
• Field of Search: 745/36, 745/022, 745/35, 745/37, 745/38, 188/2.D, 188/72.1, 188/72.9, 188/156, 188/157
• US Class Current: 188/156
• CPC Class Codes: B60T 7/122 for locking of reverse movement
• CPC Class Codes: Y10T 74/20684 Lever carried pawl

Abstract

An auxiliary system for an automobile parked on a slope that automatically releases the parking brake at an appropriate time when the automobile is restarted, thereby preventing the automobile from rolling backward or stalling, and enabling the driver to proceed smoothly and stably.

Claims

1. An auxiliary system for an automobile, the system comprising:

a base plate;

a parking lever hinged to the base plate for pulling a parking cable by way of rotary manipulation;

a latch plate, rotatably mounted at said base plate, for cooperating with a manipulating rod mounted at the parking lever to maintain the rotated state of said parking lever;

a manipulating system for changing the rotating state of the latch plate, said manipulating system comprising a motor; and

a control system for controlling the manipulating system for a period of time according to the manipulation of an operation switch and an acceleration pedal, said control system comprising an electronic control unit (ECU);

wherein said latch plate comprises;

an arch-shaped latch portion formed to create a hitched state with the manipulating rod at said parking lever; and

a round latch portion formed at a rotary shaft of said latch plate;

wherein the manipulating system further comprises a fixing system for meshing with the round latch portion of said latch plate to constantly maintain the rotated state of said latch plate;

and said motor provides a turning effect to the rotary shaft of said latch plate; and

wherein the fixing system comprises;

a locking member mounted in a slidable and linearly movable fashion for switching the meshed state of said round latch part at said latch plate;

a locking housing for guiding the linear movement of the locking member;

a support spring, mounted between the locking housing and said locking member, that resiliently supports said locking member while said locking member is retracted from said round latch part;

a cam member that contacts with said locking member and moves in the direction perpendicular to the moving direction of said locking member, thereby switching the meshed state between said locking member with said round latch part and

a fluid pressure system for sliding the cam member.

2. An auxiliary system for an automobile, the system comprising:

a base plate;

a parking lever hinged to the base plate for pulling a parking cable by way of rotary manipulation;

a latch plate, rotatably mounted at said base plate, for cooperating with a manipulating rod mounted at the parking lever to maintain the rotated state of said parking lever;

wherein said latch plate comprises an arch-shaped latch portion formed to create a hitched state with the manipulating rod at said parking lever, and a round latch portion formed at a rotary shaft of said latch plate;

a manipulating system for changing the rotating state of the latch plate, said manipulating system comprising a motor;

wherein the manipulating system further comprises a fixing system for meshing with the round latch portion of said latch plate to constantly maintain the rotated state of said latch plate and said motor provides a turning effect to the rotary shaft of said latch plate;

wherein the fixing system further comprises;

a locking member mounted in a slidable and linearly movable fashion for switching the meshed state of said round latch part at said latch plate;

a locking housing for guiding the linear movement of the locking member;

a support spring, mounted between the locking housing and said locking member, that resiliently supports said locking member while said locking member is retracted from said round latch part;

a cam member that contacts with said locking member and moves in the direction perpendicular to the moving direction of said locking member, thereby switching the meshed state between said locking member with said round latch part and a fluid pressure system for sliding the cam member;

wherein the fluid pressure system comprises;

a piston connected to said cam member via a rod;

an air pressure cylinder mounted to guide the linear movement of the piston;

an air pressure valve fitted with a solenoid actuator for supplying and discharging compressed air to and from the air pressure cylinder in response to an electrically manipulated signal; and

a discharging spring mounted resiliently in the direction of said piston for discharging the air in the air pressure cylinder; and

and

a control system for controlling the manipulating system for a period of time according to the manipulation of an operation switch and an acceleration pedal, said control system comprising an electronic control unit (ECU).