# US 10,481,630 B2 · Pedal effort generation device for vehicle

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- Number: US 10,481,630 B2
- Document ID: US10481630B2
- Status: Granted
- Kind: B2
- Application number: 15/832,026
- Filed: 2017-12-05
- Published: 2019-05-02
- Granted: 2019-11-19
- Earliest claimed: 2017-10-31
- Assignees: Hyundai Motor Company; Kia Motors Corporation
- Applicants: Hyundai Motor Company; Kia Motors Corporation
- Inventors: Eun Sik Kim
- Web page: https://patentgrep.com/patent/US10481630B2

## CPC

- 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 23/02: for main transmission clutches
- B60T 7/042: {by electrical means, e.g. using travel or force sensors}
- F16H 25/186: {with reciprocation along the axis of oscillation}
- G05G 1/44: pivoting
- B60Y 2400/3012: using Hall effect
- F16F 1/18: Leaf springs {(planar springs in general F16F1/027; "Belleville"-type springs with generally radial arms F16F1/324)}
- G05G 2505/00: Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
- 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)
- 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
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- F16H: GEARING
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION

## Abstract

A pedal effort generation device for a vehicle includes: a pedal arm rotatably mounted on a pedal member in a front and rear direction; a connection link having one end at a rear side of the connection link hinged to the pedal arm; a rotating cylinder connected with the other end of the connection link and rotatably mounted on the pedal member; a follower unit mounted on the rotating cylinder, slidably coupled to the other end of the connection link, and configured to convert linear motion of the connection link into rotational motion of the rotating cylinder according to a front rotation of the pedal arm; and an elastic mechanism connected with the pedal member and the rotating cylinder, elastically deformed upon a forward rotation of the rotating cylinder according to the front rotation of the pedal arm, and configured to provide a reverse restoring force to the rotating cylinder and the pedal arm with an accumulated elastic force.

## Claims

### Claim 1

A pedal effort generation device for a vehicle, comprising:
a pedal arm rotatably mounted on a pedal member in a front and rear direction;
a connection link having one end at a rear side of the connection link hinged to the pedal arm;
a rotating cylinder connected with the other end of the connection link and rotatably mounted on the pedal member;
a follower unit mounted on the rotating cylinder, slidably coupled to the other end of the connection link, and configured to convert linear motion of the connection link into rotational motion of the rotating cylinder according to a front rotation of the pedal arm; and
an elastic mechanism connected with the pedal member and the rotating cylinder, elastically deformed upon a forward rotation of the rotating cylinder according to the front rotation of the pedal arm, and configured to provide a reverse restoring force to the rotating cylinder and the pedal arm with an accumulated elastic force,
wherein the elastic mechanism includes:
an upper leaf spring having one end connected with an upper part of one side of the pedal member and another end connected with one side of the rotating cylinder corresponding to the other side of the pedal member; and
a lower leaf spring having one end connected with a lower part of the other side of the pedal member and another end connected with another side of the rotating cylinder corresponding to the one side of the pedal member.

### Claim 2 (depends on 1)

The pedal effort generation device of claim 1, further comprising:
a support bush fixedly mounted on the pedal member and rotatably supporting the rotating cylinder.

### Claim 3 (depends on 2)

The pedal effort generation device of claim 2, wherein:
the rotating cylinder has a cylinder shape with a front side and a rear side, ends of the front side and the rear side being open,
the other end of the connection link is slidably coupled to the follower unit through the open end of the rear side of the rotating cylinder, and
the open end of the front side of the rotating cylinder is rotatably coupled to the support bush.

### Claim 4 (depends on 3)

The pedal effort generation device of claim 3, wherein:
the open end of the front side of the rotating cylinder is provided with at least one coupling protrusion positioned on an inner circumferential surface of the rotating cylinder, and
a groove coupled to the at least one coupling protrusion is formed on an outer circumferential surface of the support bush.

### Claim 5 (depends on 4)

The pedal effort generation device of claim 4, wherein:
the groove includes:
a first coupling groove coupled to the at least one coupling protrusion in a front and rear direction; and
a second coupling groove coupled to the at least one coupling protrusion along an outer circumferential direction of the support bush.

### Claim 6 (depends on 1)

The pedal effort generation device of claim 1, wherein:
the one end of the connection link is hinged to the pedal arm by a hinge pin, and
the other end of the connection link is slidably coupled to the follower unit by a connection pin.

### Claim 7 (depends on 6)

The pedal effort generation device of claim 6, wherein:
the follower unit includes geometry slots each provided at front and rear sides of the rotating cylinder with a phase difference of 180° and slidably coupled to front and rear ends of the connection pin.

### Claim 8 (depends on 7)

The pedal effort generation device of claim 7, wherein:
the geometry slot is formed as a generator having a predetermined curved pattern between an end portion of the front side of the rotating cylinder and an end portion of the rear side of the rotating cylinder.

### Claim 9 (depends on 7)

The pedal effort generation device of claim 7, wherein:
the geometry slot includes:
a first slot bent upwardly from an end of the rear side of the rotating cylinder, bent downwardly in a middle portion thereof, and again bent upwardly toward an end of the front side of the rotating cylinder, and
a second slot bent downwardly from an end of the rear side of the rotating cylinder, bent upwardly in a middle portion thereof, and again bent downwardly toward an end of the front side of the rotating cylinder.

### Claim 10 (depends on 1)

The pedal effort generation device of claim 1, wherein:
the elastic mechanism includes at least one leaf spring accumulating an elastic force while being elastically deformed upon a forward rotation of the rotating cylinder.

### Claim 11 (depends on 1)

The pedal effort generation device of claim 1, wherein:
the upper leaf spring is bent upwardly, and the lower leaf spring is bent downwardly.

### Claim 12

A pedal effort generation device for a vehicle, comprising:
a pedal arm rotatably mounted on a pedal member in a front and rear direction;
a connection link having one end at a rear side of the connection link hinged to the pedal arm;
a rotating cylinder connected with the other end of the connection link and rotatably mounted on the pedal member;
a follower unit mounted on the rotating cylinder, slidably coupled to the other end of the connection link, and configured to convert linear motion of the connection link into rotational motion of the rotating cylinder according to a front rotation of the pedal arm;
an elastic mechanism connected with the pedal member and the rotating cylinder, elastically deformed upon a forward rotation of the rotating cylinder according to the front rotation of the pedal arm, and configured to provide a reverse restoring force to the rotating cylinder and the pedal arm with an accumulated elastic force;
a rotation angle detecting sensor mounted on the pedal member, configured to detect a rotation angle of the rotating cylinder, and configured to output a detection signal to a controller;
a support bush fixedly mounted on the pedal member and rotatably supporting the rotating cylinder, wherein
the rotating cylinder is provided with at least one coupling protrusion coupled to the support bush,
the rotation angle detecting sensor is disposed on the support bush, and
the at least one coupling protrusion is provided as a magnetic body.

### Claim 13 (depends on 12)

The pedal effort generation device of claim 12, wherein:
the rotation angle detecting sensor includes a hall sensor.

### Claim 14 (depends on 12)

The pedal effort generation device of claim 12, wherein:
the other end of the connection link is slidably coupled to the follower unit by a connection pin,
the follower unit includes geometry slots each formed at front and rear sides of the rotating cylinder with a phase difference of 180°, and
the geometry slots are slidably coupled to front and rear ends of the connection pin.

### Claim 15 (depends on 12)

The pedal effort generation device of claim 12, wherein:
the elastic mechanism includes at least one leaf spring accumulating an elastic force while being elastically deformed upon the forward rotation of the rotating cylinder.