Cooking apparatus including two-way openable door

Patent metadata

Field	Value
Publication number	US-10738522-B2
Application number	US-201816056664-A
Country	US
Kind code	B2
Filing date	Aug 7, 2018
Priority date	Aug 7, 2017
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A door includes a handle, a handle link configured to rotate about a handle shaft, a first swing hinge shaft configured to protrude outward from and retract into a first side of the door, a pull-down configured to protrude outward from and retract into a second side of the door, a first main link having a first end rotatably connected to the handle link and a second end rotatably connected to the first swing hinge shaft, and a second main link having a first end rotatably connected to the handle link and a second end rotatably connected to the pull-down bar. The pull-down bar and the first swing hinge shaft are each configured to protrude from or retract to a side of the door based on rotation of the handle.

First claim

What is claimed is:

1. A door that includes a double hinge operation structure that is configured to couple to a body and that is configured to rotate relative to the door, the door comprising:
a handle located at a first corner of the door and configured to rotate about a handle shaft, the handle comprising a holding hook and a switch configured to apply elastic force to the holding hook;
a handle base that is coupled to the door and that is configured to support rotation of the handle shaft, the handle base defining a plurality of holding holes arranged about a rotational center of the handle shaft in a circumferential direction of the handle shaft;
a handle link configured to rotate about the handle shaft based on rotation of the handle;
a first swing hinge shaft that is located at a second corner of the door and configured to protrude outward from and retract into a first side of the door that extends from the first corner to the second corner;
a pull-down bar that is located at a third corner of the door and that is configured to protrude outward from and retract into a second side of the door that extends between the first corner and the third corner, the third corner being located at a diagonal position of the second corner;
a first main link having a first end rotatably connected to the handle link, a second end rotatably connected to the first swing hinge shaft, and a first rotation supporting point that is located between the first end and the second end of the first main link and that is configured to rotatably support the first main link, the first main link being configured to rotate about the first rotation supporting point; and
a second main link having a first end rotatably connected to the handle link, a second end rotatably connected to the pull-down bar, and a second rotation supporting point that is located between the first end and the second end of the second main link and that is configured to rotatably support the second main link, the second main link being configured to rotate about the second rotation supporting point,
wherein the handle is configured to rotate about the handle shaft between a pull-down position and a side-swing position and to rotate to a locked position between the pull-down position and the side-swing position,
wherein the pull-down bar is configured to:
protrude outward from the second side of the door based on the handle rotating from the side-swing position to the pull-down position, and
retract inward into the second side of the door based on the handle rotating from the pull-down position to the side-swing position,

wherein the first swing hinge shaft is configured to:
protrude outward from the first side of the door based on the handle rotating from the pull-down position to the side-swing position, and
retract inward into the first side of the door based on the handle rotating from the side-swing position to the pull-down position,

wherein the pull-down bar is configured to maintain a state of protruding outward from the second side of the door based on the handle being positioned at the locked position,
wherein the first swing hinge shaft is configured to maintain a state of protruding outward from the first side of the door based on the handle being positioned at the locked position, and
wherein the holding hook is configured to:
insert into a holding hole of the plurality of holding holes based on the elastic force, and
be released from the holding hole based on the switch being pushed to overcome the elastic force applied to the holding hook.

2. The door of claim 1 , wherein at least one of the first main link or the handle link defines a first handle-side slit that allows the handle link to translate and rotate relative to the first main link and that is configured to receive a connection part configured to connect the handle link to the first main link.

3. The door of claim 1 , further comprising a first intermediate link that is configured to rotatably connect the handle link to the first main link, the first intermediate link having a first end rotatably connected to the handle link and a second end rotatably connected to the first main link.

4. The door of claim 1 , wherein the first swing hinge shaft is configured to, based on movement with respect to the first side of the door, be exposed outside of the door or insert into an inside of the door, and
wherein at least one of the first swing hinge shaft or the first main link defines a swing hinge side slit that allows the first swing hinge shaft to translate and rotate relative to the first main link and that is configured to receive a connection part configured to connect the first swing hinge shaft to the first main link.

5. The door of claim 1 , wherein at least one of the handle link or the second main link defines a second handle-side slit that allows the handle link to translate and rotate relative to the second main link and that is configured to receive a connection part configured to connect the handle link to the second main link.

6. The door of claim 1 , further comprising a second intermediate link that is configured to rotatably connect the handle link to the second main link, the second intermediate link having a first end rotatably connected to the handle link and a second end rotatably connected to the second main link.

7. The door of claim 1 , wherein the pull-down bar is configured to, based on movement with respect to the second side of the door, be exposed outside of the door or insert into an inside of the door, and
wherein at least one of the pull-down bar or the second main link defines a pull-down hinge side slit that allows the pull-down bar to translate and rotate relative to the second main link and that is configured to receive a connection part configured to connect the pull-down bar to the second main link.

8. The door of claim 1 , wherein the first main link extends in a first direction toward the first swing hinge shaft, and the second main link extends in a second direction toward the pull-down bar, and
wherein at least one of the first main link or the second main link includes a deflected portion that extends in a direction different from the first direction or the second direction.

9. The door of claim 1 , wherein the handle comprises a grip portion that extends from the handle shaft, that is configured to be oriented to a horizontal direction of the door toward the second corner based on the handle being oriented to the pull-down position, and that is configured to be oriented to a vertical direction of the door toward the third corner based on the handle being oriented to the side-swing position.

10. The door of claim 1 , wherein the holding hook is further configured to, based on the handle being positioned at the pull-down position, the locked position, or the side-swing position, insert into one of the plurality of holding holes to restrict rotation of the handle.

11. A cooking apparatus comprising:
a body that defines a cavity having a front opening;
a door configured to couple to the body and configured to open and close at least a portion of the front opening, the door comprising:
a handle located at a first corner of the door and configured to rotate about a handle shaft, the handle comprising a holding hook and a switch configured to apply elastic force to the holding hook,
a handle base that is coupled to the door and that is configured to support rotation of the handle shaft, the handle base defining a plurality of holding holes arranged about a rotational center of the handle shaft in a circumferential direction of the handle shaft,
a handle link configured to rotate about the handle shaft based on rotation of t

Assignees

• Lg Electronics Inc

Inventors

• Park Kyoung-Joon
• Sim Hoon Seob
• Yang Jaekyung
• Lee Suyoung
• Lee Yongsoo
• Lee Yong Hyun

Classifications

• E05Y2900/308

  for ovens · CPC title

• E05D15/522

  with disconnecting means for the appropriate pivoting parts · CPC title

• E05D15/5214

  Corner supports · CPC title

• E05D15/5211 Primary

  Concealed suspension fittings · CPC title

• F24C15/023

  Mounting of doors, e.g. hinges, counterbalancing · CPC title