Mattress

Patent metadata

Field	Value
Publication number	US-11766133-B2
Application number	US-202017022061-A
Country	US
Kind code	B2
Filing date	Sep 15, 2020
Priority date	Oct 11, 2019
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A mattress 100 includes a movable part 1 and a mattress body 2 including a first mattress part 21 disposed above the movable part 1 , and a second mattress part 22 provided separately from the first mattress part 21 and disposed to surround the first mattress part in a plan view. The first mattress part 21 is configured to rotate upward about the predetermined rotation axis by the movable part 1.

First claim

What is claimed is:

1. A mattress, comprising:
a movable part, comprising a rotatably movable plate and an actuator for rotating the movable plate, wherein the actuator comprises a first inflatable/contractible bag that is inflatable and contractible through supplying or exhausting of gas, and the movable plate is configured to adjust a rotation angle through supplying or exhausting of the gas to and from the first inflatable/contractible bag;
a mattress body, comprising a first mattress part disposed above the movable part, and a second mattress part provided separately from the first mattress part and disposed to surround the first mattress part in a plan view;
an angle sensor for measuring the rotation angle of the movable plate; and
a control part for controlling the supplying and exhausting of the gas to and from the first inflatable/contractible bag,
wherein the control part is configured to control the supplying and exhausting of the gas to and from the first inflatable/contractible bag based on the angle measured by the angle sensor,
wherein the first mattress part is configured to be rotated upward about a predetermined rotation axis by the movable part,
wherein the movable plate has a shape having a lateral direction and a longitudinal direction, and the movable plate has at least one rotation center axis tilted with respect to a center line that extends in the longitudinal direction and passes through a center of the movable plate in the lateral direction in the plan view,
wherein the at least one rotation center axis is tilted at an angle with respect to the center line, the angle is more than 0 degree and is less than 90 degrees, and the at least one rotation center axis passes through the center line at the angle,
wherein the mattress body has a rectangular shape having a short side along a lateral direction and a long side along a longitudinal direction, and the first mattress part has a shape having a lateral direction and a longitudinal direction, wherein the first mattress part has a first side and a second side parallel and opposite to each other along the lateral direction, the length of the first side is greater than the length of the second side, the first side is located on the short side of the mattress body, and an orthogonal projection of the at least one rotation center axis of the movable plate on the first mattress part passes through an orthogonal projection of the second side on the first mattress part.

2. The mattress as claimed in claim 1 , wherein the second mattress part is disposed on both ends of the mattress body in the lateral direction to sandwich the first mattress part in the plan view.

3. The mattress as claimed in claim 1 , wherein the second mattress part is configured so as not to rotate.

4. The mattress as claimed in claim 1 , wherein the at least one rotation center axis of the movable plate comprises a first rotation center axis and a second rotation center axis, the first rotation center axis, in the plan view, is tilted in a direction with respect to the center line that extends in the longitudinal direction and passes through the center of the movable plate in the lateral direction, and the second rotation center axis, in the plan view, is tilted in another direction with respect to the center line that extends in the longitudinal direction and passes through the center of the movable plate in the lateral direction,
wherein the first rotation center axis is tilted at an angle with respect to the center line, the angle is more than 0 degree and is less than 90 degrees, and the first rotation center axis passes through the center line at the angle,
the second rotation center axis is tilted at an angle with respect to the center line, the angle is more than 0 degree and is less than 90 degrees, and the second rotation center axis passes through the center line at the angle.

5. The mattress as claimed in claim 4 , wherein the first rotation center axis is tilted at a tilting angle of 10 degrees or more and 15 degrees or less in the direction with respect to the center line in the plan view, and the second rotation center axis is tilted at a tilting angle of 10 degrees or more and 15 degrees or less in the another direction with respect to the center line in the plan view.

6. The mattress as claimed in claim 4 , wherein the movable plate comprises a first plate member and a second plate member which is disposed below the first plate member and rotatably connected with the first plate member by the first rotation center axis.

7. The mattress as claimed in claim 6 , further comprising a third plate member which is disposed below the second plate member and rotatably connected with the second plate member by the second rotation center axis different from the first rotation center axis, wherein the first plate member, the second plate member, and the third plate member are disposed to overlap each other in the plan view.

8. The mattress as claimed in claim 1 , wherein the first mattress part is disposed on the center line that extends in the longitudinal direction of the mattress body and passes through a center of the mattress body in the lateral direction.

9. The mattress as claimed in claim 1 , wherein a length of the first mattress part in the longitudinal direction is a half or less of a length of the mattress body, and in the longitudinal direction of the mattress body, and the first mattress part is disposed on a side on which a head part of a person is placed in the longitudinal direction of the mattress body.

10. The mattress as claimed in claim 1 , wherein the first mattress part has a maximum length in the lateral direction that is two thirds of a length of the mattress body in the lateral direction of the mattress body.

11. The mattress as claimed in claim 1 , wherein the first mattress part has a maximum length in the lateral direction that is 200 mm or more and 450 mm or less.

12. The mattress as claimed in claim 1 , wherein a maximum tilting angle of the first mattress part is 20 degrees or more and 60 degrees or less with respect to a horizontal plane.

13. The mattress as claimed in claim 1 , further comprising:
a pressure sensor for measuring a pressure in the first inflatable/contractible bag,
wherein the control part is configured to perform control to stop the supplying of the gas to the first inflatable/contractible bag in a case where the pressure in the first inflatable/contractible bag measured by the pressure sensor exceeds a predetermined upper limit value and stop exhausting the gas from the first inflatable/contractible bag in a case where the pressure in the first inflatable/contractible bag measured by the pressure sensor drops below a predetermined lower limit value.

14. The mattress as claimed in claim 1 , further comprising a second inflatable/contractible bag that is inflatable and contractible through supplying or exhausting of gas, wherein the second inflatable/contractible bag is disposed near the first mattress part on a side on which a foot of a person is placed in a longitudinal direction of the mattress body, and is configured to be provided below the second mattress part and supplied with the gas during rotation of the first mattress part.

Assignees

• Funai Electric Co
• Univ Osaka

Inventors

• Wakabayashi Naoyuki
• Tanaka Fuminori
• Sugimoto Jun
• Hirata Masayuki
• Omura Yuka
• Kusakabe Kanae

Classifications

• A47C20/048 Primary

  by fluid means · CPC title

• A61G7/001 Primary

  with means for turning-over the patient · CPC title

• A61G7/05776

  with at least two groups of alternately inflated chambers · CPC title

• A61G7/07

  for the head or torso, e.g. special back-rests {(pillows in general A47G9/10)} · CPC title

• A61G2203/34

  for pressure · CPC title