Bed

Patent metadata

Field	Value
Publication number	US-11896131-B2
Application number	US-202017096648-A
Country	US
Kind code	B2
Filing date	Nov 12, 2020
Priority date	Apr 7, 2020
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A bed according to an embodiment may include a topper, at least one firmness adjuster provided under the topper, and a bedframe configured to have an adjustable position and to support the firmness adjuster. There may be a plurality of firmness adjusters corresponding to a plurality of areas of the bed, and each firmness adjuster may include a plurality of cushions provided in a cushion case and a drive to adjust the firmness of the plurality of cushions. The drive may change a position of a first spring relative to a second spring in each of the cushions to change a perceived firmness by a user lying on top of the topper and the firmness adjusters. A dryer may be provided under the bedframe to keep the cushions and topper dry.

First claim

What is claimed is:

1. A bed, comprising
a mattress having a prescribed width and a prescribed length, the mattress having a plurality of cushion cases,
wherein each cushion case of the plurality of cushion cases includes:
a plurality of cushions provided in the cushion case,
a drive coupled to the cushion case, and
a plurality of drive gears configured to transmit a force from the drive to the plurality of cushions such that a firmness of the cushions in the cushion case are adjusted when the drive is operated,

wherein each cushion includes:
a first elastic member,
a second elastic member surrounding the first elastic member,
a screw configured to change a height of the first elastic member with respect to the second elastic member when the screw is rotated, and
a transmission gear configured to rotate the screw and configured to engage with at least one drive gear of the plurality of drive wars,

wherein the drive includes at least one of an actuator or a motor, and the plurality of drive gears include:
a first gear coupled to a rotation shaft of the drive,
at least one second gear engaged with the first gear, and
a plurality of third gears provided between adjacent transmission gears,

wherein the second gear is engaged with at least one third gear or the transmission gear.

2. The bed of claim 1 , wherein the mattress further includes:
a top pad provided over the plurality of cushions of the plurality of cushion cases, and
a cover provided to surround the top pad and the plurality of cushion cases.

3. The bed of claim 2 , further comprising
a main frame having a first frame rotatably coupled to a second frame such that a posture of the main frame is adjustable; and
a guard surrounding sides of the main frame and mattress.

4. The bed of claim 3 , wherein the mattress includes a partition provided along a direction of the prescribed width and between a pair of adjacent cushion cases.

5. The bed of claim 4 , wherein at least one of the partition, the top pad, or the guard is made of an elastic foam material.

6. The bed of claim 1 , further comprising a main frame, having:
a first frame configured to support a first section of a user's body;
a second frame hinged to the first frame and configured to support a section of a user's upper body and hinged to the first frame,
a third frame configured to support a first section of a user's lower body and hinged to the first frame,
a fourth frame configured to support a second section of a user's lower body and hinged to the third frame,
a first actuator configured to rotate the first frame with respect to the second frame, and
a second actuator configured to rotate the third frame with respect to the first frame.

7. The bed of claim 1 , wherein the mattress includes a top pad provided over the plurality of cushions of the plurality of cushion cases, and the top pad includes a plurality of sleeves protruding from a bottom surface, the plurality of sleeves configured to surround upper ends of the plurality of cushions.

8. The bed of claim 1 , further comprising
a main frame provided under the mattress; and
a dryer coupled to a bottom of the main frame and configured to blow air toward the mattress.

9. The bed of claim 8 , wherein the dryer includes:
a fan having an inlet to suction air and at least one outlet to discharge air,
at least one supply duct coupled to the at least one outlet,
at least one discharge duct coupled to the supply duct and having a discharge port through which air suctioned through the fan and guided through the supply duct is discharged toward the mattress, and
a filter configured to filter suctioned air.

10. The bed of claim 9 , wherein the fan is a centrifugal fan having the inlet on a bottom surface and the outlet on a side surface such that air is suctioned in an axial direction of the fan and discharged in a radial direction of the fan.

11. The bed of claim 9 , further comprising a guard surrounding sides of the main frame and mattress, the guard including a suction opening, wherein the dryer further includes a suction duct coupled to an inlet of the fan and having a suction port exposed through the suction opening, and the filter is provided at the inlet of the fan, at the suction port, or at the suction opening.

12. The bed of claim 11 , wherein the supply duct is provided over the suction duct, and the supply duct has at least one section that extends in a direction along the prescribed length.

13. The bed of claim 11 , wherein the supply duct and the suction duct are parallel to each other.

14. The bed of claim 11 , wherein the suction duct is perpendicular to at least one section of the supply duct.

15. The bed of claim 11 , wherein at least one of the suction duct or the supply duct includes a flexible section configured to bend with a movement of the main frame.

16. The bed of claim 10 , wherein the discharge duct includes a bottom surface and side walls defining an upper opening, the discharge port is formed in the bottom surface, and the discharge duct extends in a direction perpendicular to the supply duct.

17. A bed, comprising
a mattress having a prescribed width and a prescribed length, the mattress having a plurality of cushion cases,
wherein each cushion case of the plurality of cushion cases includes:
a plurality of cushions provided in the cushion case,
a drive coupled to the cushion case, and
a plurality of driving gears configured to transmit a force from the drive to the plurality of cushions such that a firmness of the cushions in the cushion case are adjusted when the drive is operated;
a main frame provided under the mattress;
a guard surrounding sides of the main frame and mattress and having a suction opening; and
a dryer coupled to a bottom of the main frame and configured to blow air toward the mattress,

wherein the dryer includes:
a fan having an inlet to suction air and at least one outlet to discharge air;
at least one supply duct coupled to the at least one outlet;
at least one discharge duct coupled to the supply duct and having a discharge port through which air suctioned through the fan and guided through the supply duct is discharged toward the mattress;
a filter configured to filter suctioned air; and
a suction duct coupled to an inlet of the fan and having a suction port exposed through the suction opening,

wherein the filter is provided at the inlet of the fan, at the suction port, or at the suction opening.

18. The bed according to claim 17 , wherein the fan is a centrifugal fan having the inlet on a bottom surface and the outlet on a side surface such that air is suctioned in an axial direction of the fan and discharged in a radial direction of the fan.

19. The bed of claim 17 , wherein the supply duct is provided over the suction duct, and the supply duct has at least one section that extends in a direction along the prescribed length.

20. The bed of claim 1 , wherein the supply duct and the suction duct are parallel to each other.

21. The bed of claim 17 , wherein the suction duct is perpendicular to at least one section of the supply duct.

22. The bed of claim 17 , wherein at least one of the suction duct or the supply duct includes a flexible section configured to bend with a movement of the main frame.

23. The bed of claim 17 , wherein the discharge duct includes a bottom surface and side walls defining an upper opening, the discharge port is formed in the bottom surface

Assignees

• Lg Electronics Inc

Inventors

• Lee Deukwon
• Oh Minkyu
• Kim Yongnam
• Kim Daewoong
• An Seongwoo
• No Yanghwan
• Ju Keunho

Classifications

• A47C21/044 Primary

  with active means, e.g. by using air blowers or liquid pumps · CPC title

• A47C20/041

  by electric motors · CPC title

• A47C23/002

  with separate resilient support elements, e.g. elastomeric springs arranged in a two-dimensional matrix pattern · CPC title

• A47C23/34

  with provisions for giving extra support for the head or the legs · CPC title

• A47C27/053

  with only one layer of foamed material · CPC title