Expandable cover unit

Patent metadata

Field	Value
Publication number	US-11517144-B2
Application number	US-202016799324-A
Country	US
Kind code	B2
Filing date	Feb 24, 2020
Priority date	Feb 26, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

The present disclosure relates to an expandable cover unit including a main body, a manipulation member installed on the main body to be rotatable or moveable upward or downward, an expanding portion installed on the main body at a position adjacent to the manipulation member and provided with at least one wing member installed on the main body to be slidable in a direction away from the manipulation member such that an end portion of the wing member protrudes outward from the main body, and a wing driving unit configured to operate the wing member to move the wing member according to the manipulation member rotated or moved upward or downward by a manipulation of a user.

First claim

What is claimed is:

1. An expandable cover unit comprising:
a main body;
a manipulation member installed on the main body to be moved by a manipulation of a user;
an expanding portion installed on the main body at a position adjacent to the manipulation member and provided with one or more wing members installed on the main body to be slidable in a direction away from the manipulation member such that an end portion of the wing member protrudes outward from the main body; and
a wing driving unit configured to operate the wing member to move the wing member according to the manipulation member moved by the manipulation of the user,
wherein:
the manipulation member is installed on the main body to be rotatable or moveable upward or downward; and
the wing driving unit includes a fixed magnet installed on one end portion of the wing member facing the manipulation member and having a predetermined magnetic force,
an attractive magnet which is installed on an outer circumferential surface of the manipulation member and generates an attractive force with respect to the fixed magnet to move the wing member toward the manipulation member when the manipulation member rotates or moves upward or downward such that the attractive magnet faces the fixed magnet, and
a repulsive magnet which is installed on the outer circumferential surface of the manipulation member at a position spaced apart from the attractive magnet in a direction, in which the manipulation member rotates or moves upward or downward, and generates a repulsive force with respect to the fixed magnet to move the wing member in the direction away from the manipulation member when the manipulation member rotates or moves upward or downward such that the repulsive magnet faces the fixed magnet.

2. The expandable cover unit of claim 1 , wherein:
the manipulation member is installed on the main body to be moveable upward and downward; and
the wing driving unit includes at least one connecting member of which both ends are installed at the manipulation member and the wing member such that the wing member is close to or spaced apart from the manipulation member when the manipulation member moves upward or downward with respect to the main body.

3. An expandable cover unit comprising:
a main body;
a manipulation member installed on the main body to be moved by a manipulation of a user;
an expanding portion installed on the main body at a position adjacent to the manipulation member and provided with one or more wing members installed on the main body to be slidable in a direction away from the manipulation member such that an end portion of the wing member protrudes outward from the main body; and
a wing driving unit configured to operate the wing member to move the wing member according to the manipulation member moved by the manipulation of the user,
wherein the expanding portion includes:
a plurality of first wing members slidably installed on the main body to be spaced apart from each other in a virtual circle having a predetermined radius around the manipulation member; and
a plurality of second wing members slidably installed on the main body between the first wing members, and
wherein the first wing member includes:
a first extension panel installed on the main body such that one end portion of the first extension panel faces the manipulation member and extends a predetermined length in a sliding direction of the first wing member; and
a first expanding panel formed on the other end portion of the first extension panel to protrude outward from the main body when the first extension panel moves in the direction away from the manipulation member, extending in a direction intersecting a longitudinal direction of the first extension panel, and provided with an inlet recessed downward a predetermined depth with respect to an upper surface of the first expanding panel.

4. The expandable cover unit of claim 3 , wherein the second wing member includes:
a second extension panel installed on the main body such that one end portion of the second extension panel faces the manipulation member and extends a predetermined length in a sliding direction of the second wing member; and
a second expanding panel formed on the other end portion of the second extension panel to protrude outward when the second extension panel moves in the direction away from the manipulation member, and extending toward the first expanding panel to be inserted into the inlet when the first and second wing members move to be close to the manipulation member.

5. An expandable cover unit comprising:
a main body;
a manipulation member installed on the main body to be moved by a manipulation of a user;
an expanding portion installed on the main body at a position adjacent to the manipulation member and provided with one or more wing members installed on the main body to be slidable in a direction away from the manipulation member such that an end portion of the wing member protrudes outward from the main body; and
a wing driving unit configured to operate the wing member to move the wing member according to the manipulation member moved by the manipulation of the user,
wherein:
any one end portion of two end portions of the manipulation member is detachably coupled to the main body at a position adjacent to one end portion of the wing member; and
the wing driving unit includes a fixed magnet installed on the one end portion of the wing member facing the manipulation member and has a predetermined magnetic force,
an attractive magnet which is installed on the one end portion of the manipulation member and generates an attractive force with respect to the fixed magnet to move the wing member toward the manipulation member when the one end portion of the manipulation member is coupled to the main body, and
a repulsive magnet which is installed on the other end portion of the manipulation member and generates a repulsive force with respect to the fixed magnet to move the wing member in the direction away from the manipulation member when the other end portion of the manipulation member is coupled to the main body.

Assignees

• Univ Chosun Iacf

Inventors

• Kim Chang Lae
• Choi Myeong Hwan
• Seo Seung Ju
• Han Chang Nyung

Classifications

• A47J45/063

  Knobs, e.g. for lids (A47J45/07 takes precedence) · CPC title

• A47J36/06 Primary

  Lids or covers for cooking-vessels (specially adapted for pressure-cookers A47J27/08) · CPC title

• F16B2200/83

  Use of a magnetic material · CPC title