Door handle for vehicle

1 . A door handle for a door of a vehicle comprising:

a handle unit; and

an opening/closing unit that pushes the handle unit to an exterior of a door panel or pull the handle unit to an interior of the door panel,

wherein, in response to the handle unit being pressed toward the interior of the door panel while being laid flush with the door panel, the handle unit protrudes to the exterior of the door panel and switches to an open mode,

wherein, in response to the handle unit being pressed while it is in the open mode, the handle unit retracts to the interior of the door panel and switches to a storage mode,

wherein the opening/closing unit includes a link part, the link part comprising:

a first link, a first end of which is rotatably coupled to a first side of the handle unit; and

a second link, a first end of which is rotatably coupled to a second side of the handle unit, and

wherein the opening/closing unit further includes an operating part, which is configured to:

move a second end of the first link and a second end of the second link away from each other to switch to the open mode; and

move the second end of the first link and the second end of the second link toward each other to switch to the storage mode.

2 . The door handle of claim 1 , wherein the operating part includes:

a first rack gear, which is connected to the first link;

a second rack gear, which is connected to the second link; and

a pinion gear, which engages simultaneously between the first rack gear and the second rack gear.

3 . The door handle of claim 2 , wherein the first rack gear and the second rack gear are arranged side by side to face each other with respect to the pinion gear, and are disposed to move linearly in opposite directions according to rotation of the pinion gear.

4 . The door handle of claim 2 , wherein the opening/closing unit includes a biasing part, which provides a biasing force to cause the first rack gear and the second rack gear to move away from each other.

5 . The door handle of claim 4 , wherein the pinion gear includes:

an engagement area, which contacts the first rack gear and the second rack gear; and

an extension area, which protrudes from a center of the engagement area and interacts with the biasing part.

6 . The door handle of claim 1 , further comprising:

a driving part that actuates the operating part to switch between the open mode and the storage mode.

7 . The door handle of claim 1 , further comprising:

a cover part that covers the operating part.

8 . The door handle of claim 5 , further comprising:

a mode setting unit interposed between the first rack gear and the second rack gear to selectively limit movement of the operating part when switching from the open mode to the storage mode.

9 . The door handle of claim 8 , wherein the mode setting unit includes:

a protruding part, which is mounted on one of the first rack gear or the second rack gear; and

an engagement part, which is mounted on the other of the first rack gear or the second rack gear and is disposed to rotate while being engaged with the protruding part.

10 . The door handle of claim 9 , wherein the operating part includes:

a first fixing member, which is for mounting the protruding part; and

a second fixing member, which is disposed to face the first fixing member and is provided for mounting the engagement part, and

wherein as the first fixing member and the second fixing member move toward each other, the protruding part passes through the engagement part.

11 . The door handle of claim 10 , wherein the engagement part includes:

a hollow ring member, which is mounted on the second fixing member and is disposed to be rotatable; and

at least one key member, which protrudes from an inner circumferential surface of the ring member.

12 . The door handle of claim 11 , wherein the protruding part includes:

a head member, which is mounted on the first fixing member;

a shaft, which extends from the head member and protrudes toward the second fixing member;

first guide patterns, which protrude from an outer circumferential surface of the shaft and include first inclined surfaces that are formed to contact the key member in a first direction, the first direction being a direction in which the engagement part engages with the protruding part; and

second guide patterns, which protrude from the outer circumferential surface of the shaft and include a plurality of second inclined surfaces formed to contact the key member in a second direction, the second direction being a direction in which the engagement part disengages from the protruding part.

13 . The door handle of claim 12 , wherein the opening/closing unit is configured such that:

in response to the handle unit being pressed with a pressing force while in the open mode, the key member contacts one of the first inclined surfaces in the first direction, causing the engagement part to rotate, and in response to the pressing force being released, the engagement part is biased toward the second direction by the biasing part to be disposed on one of the second inclined surfaces, thereby switching to the storage mode; and

in response to the handle unit being pressed with a pressing force while in the storage mode, the key member contacts one of the first inclined surfaces in the first direction, causing further rotation of the engagement part, and in response to the pressing force being released, the engagement part is biased toward the second direction by the biasing part to abut an adjacent second inclined surface and then be released from the second guide pattern, thereby switching to the open mode.

14 . The door handle of claim 12 , wherein the first inclined surfaces and the second inclined surfaces are disposed to at least partially overlap with each other along a circumferential direction.

15 . The door handle of claim 12 , wherein the engagement part is disposed to contact at least one inclined surface from among the first inclined surfaces and the second inclined surfaces when moving between the first guide patterns and the second guide patterns in the first direction or the second direction.

16 . The door handle of claim 10 , further comprising:

a housing for accommodating the opening/closing unit and guiding movement of the handle unit.

17 . The door handle of claim 16 , wherein the operating part includes a connecting member, which protrudes from the first fixing member and is connected to one end of the link part.

18 . The door handle of claim 17 , wherein the connecting member includes a connecting groove, which interferes with a connecting pin coupled to the one end of the link part along a first direction, the first direction being a direction in which the engagement part comes closer to the protruding part, or along a second direction, the second direction being a direction in which the engagement part moves away from the protruding part, and

wherein interference between the connecting pin and the connecting groove is released along a third direction, the third direction being perpendicular to the first direction and the second direction.

19 . The door handle of claim 18 , wherein the housing includes:

a first guide groove, which is formed along the first direction and the second direction and in which the connecting pin is at least partially inserted to guide movement of the connecting pin; and

a second guide groove, which is disposed to communicate with an end of the first guide groove and guides movement of the connecting pin along the third direction.

20 . The door handle of claim 19 , wherein in the open mode, in response to the handle unit being pulled, the connecting pin moves along the second guide groove, and the door is opened.

21 . The door handle of claim 19 , wherein the housing further includes a restoring part, which is disposed to be rotatable relative to the housing and elastically limits the movement of the connecting pin.

22 . The door handle of claim 21 , wherein the restoring part includes:

a protruding piece, which abuts the connecting pin as the connecting pin moves from the first guide groove to an end of the second guide groove;

a support piece, which supports the protruding piece to be rotatable on the housing;

a cable release, which includes a connecting piece that protrudes in a different direction from the protruding piece on the support piece and to which a cable is connected; and

an elastic member, which is coupled to the support piece and elastically rotates the cable release such that the connecting piece is disposed by the protruding piece at a junction between the first guide groove and the second guide groove or on the first guide groove.

23 . The door handle of claim 22 , wherein the housing further includes a rotation prevention part, which is disposed adjacent to the restoring part to be rotated by an external impact on the housing, and

wherein the rotation prevention part rotates to interfere with a rotation direction of the cable release when the external impact is received.