# US 11,077,752 B2 · Vehicle accelerator pedal having dual hysteresis generating structure

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- Number: US 11,077,752 B2
- Document ID: US11077752B2
- Status: Granted
- Kind: B2
- Application number: 16/781,626
- Filed: 2020-02-04
- Published: 2020-08-13
- Granted: 2021-08-03
- Earliest claimed: 2019-02-08
- Assignees: Kyung Chang Industrial Co., Ltd.
- Applicants: KYUNG CHANG INDUSTRIAL CO., Ltd.
- Inventors: Hyeon Uk Kim; Beom Jun Kim
- Web page: https://patentgrep.com/patent/US11077752B2

## CPC

- B60K 26/02: of initiating means or elements
- G05G 5/03: Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce (arrangements for indicating the position of the controlling member G05G1/015)
- B60K 26/021: {with means for providing feel, e.g. by changing pedal force characteristics}
- G05G 1/44: pivoting
- G05G 5/05: Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops (G05G5/28 takes precedence)
- G05G 1/445: about a central fulcrum
- G05G 2505/00: Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- G05G: CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F16C1/10; gearings or mechanisms not peculiar to this purpose F16H; speed changing or reversing mechanisms for gearings conveying rotary motion F16H59/00 - F16H63/00)

## Abstract

Disclosed is a vehicle accelerator pedal that may include a cylindrical hinge unit, a lever unit having one side configured to operate in a first direction and another side formed to correspond to an inner circumferential edge of the hinge unit and configured to operate in a second direction opposite the first direction. An outer circumferential edge may be configured to come into close contact with an upper inner circumferential edge of the hinge unit such that a moment of force is applied in a first rotation direction by the hinge unit. An elastic unit having one side may be configured to elastically support one side of the lever unit, the other side formed to correspond to the inner circumferential edge of the hinge unit. An outer circumferential edge may be configured to come into close contact with a lower inner circumferential edge of the hinge unit.

## Claims

### Claim 1

A vehicle accelerator pedal comprising:
a cylindrical hinge unit;
a lever unit having one side configured to operate in a first direction in conjunction with a pedal unit, the other side formed to correspond to an inner circumferential edge of the hinge unit and configured to operate in a second direction opposite to the first direction, and an outer circumferential edge configured to come into close contact with an upper inner circumferential edge of the hinge unit such that a moment of force is applied in a first rotation direction by the hinge unit; and
an elastic unit having one side configured to elastically support one side of the lever unit, the other side formed to correspond to the inner circumferential edge of the hinge unit, and an outer circumferential edge configured to come into close contact with a lower inner circumferential edge of the hinge unit such that a moment of force is applied in a second rotation direction opposite to the first rotation direction by the hinge unit,
wherein the moment of force in the first rotation direction is gradually increased as a close contact surface area between the outer circumferential edge of the other side of the lever unit and the upper inner circumferential edge of the hinge unit is gradually increased as the force is applied to the pedal unit, and the moment of force in the second rotation direction is gradually increased as the close contact surface area between the outer circumferential edge of the other side of the elastic unit and the lower inner circumferential edge of the hinge unit is gradually increased as the force is eliminated from the pedal unit;
wherein a first central axis is disposed between the one side and the other side of the lever unit and is configured to serve as a rotation center axis of the lever unit, and a second central axis is disposed between the one side and the other side of the elastic unit and is configured to serve as a rotation center axis of the elastic unit; and
wherein the lever unit and the elastic unit are coupled such that the first central axis and the second central axis are axially coincident with each other.

### Claim 2 (depends on 1)

The vehicle accelerator pedal of claim 1, wherein by a force applied to the pedal unit, one side of the lever unit is moved downward and the other side of the lever unit is moved upward, such that moment of force is applied counterclockwise by the hinge unit.

### Claim 3 (depends on 1)

The vehicle accelerator pedal of claim 1, wherein the elastic unit is disposed below the lever unit, and one side of the elastic unit is moved upward and the other side of the elastic unit is moved downward by an elastic force, such that a moment of force is applied clockwise by the hinge unit.

### Claim 4 (depends on 1)

The vehicle accelerator pedal of claim 1, wherein the lever unit comprises a first load point at which a force is applied to one side by the pedal unit, a first action point at which the other side is brought into contact with the upper inner circumferential edge of the hinge unit by the force applied to the pedal unit, and the first central axis disposed between the first load point and the first action point, the elastic unit comprises a second load point at which an elastic force is applied to one side, a second action point at which the other side is brought into contact with the lower inner circumferential edge of the hinge unit by the elastic force, and the second central axis disposed between the second load point and the second action point.

### Claim 5 (depends on 1)

The vehicle accelerator pedal of claim 1, wherein the elastic unit comprises an elastic member disposed below one side of the elastic unit and configured to provide an elastic force.

### Claim 6 (depends on 1)

The vehicle accelerator pedal of claim 1, wherein the lever unit further comprises a stopper disposed at an upper side of one side of the lever unit and configured to maintain a spacing distance between one side of the lever unit and an internal space of a housing configured to accommodate the elastic unit and the lever unit.

### Claim 7 (depends on 1)

The vehicle accelerator pedal of claim 1, wherein the pedal unit comprises:
a pedal arm having one side fixed to a vehicle body so as to be rotatable at a predetermined angle; and
a push portion protruding downward from the pedal arm and configured to press one side of the lever unit.