# US 9,752,368 B2 · Door checker device for use in automobiles

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- Number: US 9,752,368 B2
- Document ID: US9752368B2
- Status: Granted
- Kind: B2
- Application number: 14/435,644
- Filed: 2013-10-16
- Published: 2015-08-20
- Granted: 2017-09-05
- Earliest claimed: 2012-10-17
- Assignees: Kwang Jin Machine Co., Ltd.
- Applicants: Kwangjin Machine Co., Ltd.
- Inventors: Byeong Cheol Kwak
- Web page: https://patentgrep.com/patent/US9752368B2

## CPC

- E05F 5/025: {specially adapted for vehicle doors}
- E05C 17/003: {Power-actuated devices for limiting the opening of vehicle doors}
- E05C 17/203: {concealed, e.g. for vehicles}
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05C: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS (latching means for sideboard or tailgate structures for vehicles B62D, {B62D33/02}; fastening devices for constructional or engineering elements E04, F16B; locks, fastening devices structurally or operatively combined or having significant cooperation with locks E05B; means for operating or controlling wing fasteners in conjunction with mechanisms for moving the wing E05F)

## Abstract

A door checker device for use in automobiles which includes a fixing member attached to one side of the car body, a checker arm having one end hinge-coupled to the fixing member to be rotated, wherein the checker arm is disposed between a door and the car body, and a door checker attached to one side of the door side and engaged with the checker arm to slid along the longitudinal direction of the checker arm, wherein the door checker allows the door to maintain a stationary state at a predetermined position in the swing trajectory of the door.

## Claims

### Claim 1

A door checker device for use in vehicles, the door checker device comprising a fixing member that is attached to a side of a vehicle body; a checker arm that has an end hinge-coupled to the fixing member to rotate and is positioned between a door and the vehicle body; and a door checker that is attached to a side of the door and is engaged to the checker arm to slide along a longitudinal direction of the checker arm, wherein the door checker allows the door to maintain a stationary state at a predetermined position in a swing path of the door,
wherein the door checker comprises:
a checker panel that is coupled to the side of the door;
a first rotation means that is rotatably coupled to the checker panel and is engaged with the checker arm disposed near one surface side of the checker panel in such a way to rotate;
a second rotation means that is disposed near the other surface side of the checker panel, rotates by being interlocked with the rotation means, and has a friction plate; and
a stator that is disposed near the other surface side of the checker panel and is capable of restraining the second rotation means while attracting the friction plate of the second rotation means due to an electromagnetic force when an electrical signal is applied thereto;
wherein a portion where the first rotation means and the checker arm are engaged with each other is positioned near the one surface side of the checker panel; and
wherein a receiving portion having a cut hole formed therein, which is bent in a direction away from the stator and is partially cut, is formed on the checker panel, and
the first rotation means is rotatably supported in the receiving portion and partially leaves the receiving portion through the cut hole in such a way to be engaged with the checker arm.

### Claim 2 (depends on 1)

The door checker device of claim 1, wherein the stator is fixed and attached onto the other surface of the checker panel, and the friction plate is positioned near an opposite side of the checker panel having the stator between the friction plate and the checker panel.

### Claim 3

A door checker device for use in vehicles, the door checker device comprising a fixing member that is attached to a side of a vehicle body; a checker arm that has an end hinge-coupled to the fixing member to rotate and is positioned between a door and the vehicle body; and a door checker that is attached to a side of the door and is engaged to the checker arm to slide along a longitudinal direction of the checker arm, wherein the door checker allows the door to maintain a stationary state at a predetermined position in a swing path of the door,
wherein the door checker comprises:
a checker panel that is coupled to the side of the door;
a first rotation means that is rotatably coupled to the checker panel and is engaged with the checker arm disposed near one surface side of the checker panel in such a way to rotate;
a second rotation means that is disposed near the other surface side of the checker panel, rotates by being interlocked with the rotation means, and has a friction plate; and
a stator that is disposed near the other surface side of the checker panel and is capable of restraining the second rotation means while attracting the friction plate of the second rotation means due to an electromagnetic force when an electrical signal is applied thereto;
wherein the stator is fixed and attached onto the other surface of the checker panel, and the friction plate is positioned near an opposite side of the checker panel having the stator between the friction plate and the checker panel; and
wherein the stator has a communicating hole in a center thereof, and
the second rotation means further comprises:
a rotation body comprising:
an insertion portion that is inserted into the communicating hole and is fixed and coupled to the first rotation means; and
an edge portion that extends outwardly along an edge of the insertion portion and is elastically connected with the friction plate.

### Claim 4

A door checker device for use in vehicles, the door checker device comprising a fixing member that is attached to a side of a vehicle body; a checker arm that has an end hinge-coupled to the fixing member to rotate and is positioned between a door and the vehicle body; and a door checker that is attached to a side of the door and is engaged to the checker arm to slide along a longitudinal direction of the checker arm, wherein the door checker allows the door to maintain a stationary state at a predetermined position in a swing path of the door,
wherein the door checker comprises:
a checker panel that is coupled to the side of the door;
a first rotation means that is rotatably coupled to the checker panel and is engaged with the checker arm disposed near one surface side of the checker panel in such a way to rotate;
a second rotation means that is disposed near the other surface side of the checker panel, rotates by being interlocked with the rotation means, and has a friction plate; and
a stator that is disposed near the other surface side of the checker panel and is capable of restraining the second rotation means while attracting the friction plate of the second rotation means due to an electromagnetic force when an electrical signal is applied thereto;
wherein the stator is fixed and attached onto the other surface of the checker panel, and the friction plate is positioned near an opposite side of the checker panel having the stator between the friction plate and the checker panel; and
wherein the stator has a communicating hole in a center thereof, and
the first rotation means is positioned near an opposite side of the friction plate, having the stator between the first rotation means and the friction plate, and
the second rotation means further comprises a rotation body that passes through the communicating hole while being fixed on a side thereof to the first rotation means and is connected near the other side thereof to the friction plate.