Elderly chair support and elderly chair

Patent metadata

Field	Value
Publication number	US-12446693-B2
Application number	US-202218281361-A
Country	US
Kind code	B2
Filing date	Feb 24, 2022
Priority date	Mar 11, 2021
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Provided are an elderly chair support and an elderly chair. A support assembly of the elderly chair support includes a support plate ( 41 ) and an anti-torsion tube ( 42 ) fixedly connected to the support plate ( 41 ); two ends of a first lifting rod ( 6 ) are pivoted to the support plate ( 41 ) and a base ( 1 ) respectively, and two ends of a second lifting rod ( 7 ) are pivoted to the support plate ( 41 ) and the base ( 1 ) respectively; and a first drive assembly is capable of driving a power rod ( 3 ) to rotate relative to the support plate ( 41 ) to have a first position and a second position, in the case where the power rod ( 3 ) is at the first position, a leg assembly ( 5 ) stretches and the anti-torsion tube ( 42 ) abuts against the base ( 1 ), in the case where the power rod ( 3 ) is at the second position, the leg assembly ( 5 ) retracts and the anti-torsion tube ( 42 ) has a first distance from the base ( 1 ), and in the case where the power rod ( 3 ) is at the second position, the first drive assembly is capable of driving the power rod ( 3 ) to drive the support plate ( 41 ) to move synchronously so that the support plate ( 41 ) has a second distance from the base ( 1 ). The elderly chair support and the elderly chair have high stability and are simple in structure.

First claim

What is claimed is:

1. An elderly chair support, comprising a base, a first drive assembly, a power rod, a support assembly, a leg assembly, a first lifting rod, and a second lifting rod,
wherein the support assembly comprises a support plate and an anti-torsion tube fixedly connected to the support plate; two ends of the first lifting rod are pivoted to the support plate and the base respectively, and two ends of the second lifting rod are pivoted to the support plate and the base respectively; and
wherein the first drive assembly is capable of driving the power rod to rotate relative to the support plate to have a first position and a second position, in a case where the power rod is at the first position, the leg assembly stretches and the anti-torsion tube abuts against the base, in a case where the power rod is at the second position, the leg assembly retracts and the anti-torsion tube has a first distance from the base, and in the case where the power rod is at the second position, the first drive assembly is capable of driving the power rod to drive the support plate to move synchronously so that the support plate has a second distance from the base.

2. The elderly chair support according to claim 1 , wherein the first drive assembly comprises a first electric push rod and a first connecting rod, wherein the first electric push rod has an end hinged to the base and another end hinged to the first connecting rod, and the first connecting rod is connected to the power rod.

3. The elderly chair support according to claim 2 , wherein the support plate is provided with a guide slot, and the power rod is provided with a guide post, wherein the guide post is configured to be slidably disposed in the guide slot and is connected to the first connecting rod.

4. The elderly chair support according to claim 1 , wherein the leg assembly comprises a first stretching member, a second stretching member, a third stretching member, a fourth stretching member, a fifth stretching member, a sixth stretching member, a seventh stretching member, and a support member, wherein the first stretching member is pivoted to the support plate at a first pivot point, the second stretching member is pivoted to the first stretching member, the third stretching member and the power rod in sequence at a second pivot point, a third pivot point and a fourth pivot point respectively, the third pivot point is located between the second pivot point and the fourth pivot point, the fourth stretching member is pivoted to the third stretching member, the support plate and the fifth stretching member in sequence at a fifth pivot point, a sixth pivot point and a seventh pivot point respectively, the fifth pivot point is located between the sixth pivot point and the seventh pivot point, the fifth stretching member is pivoted to the support member, the sixth stretching member has an end pivoted to the support plate at an eighth pivot point and another end pivoted to the seventh stretching member, the seventh stretching member is pivoted to the support member, the sixth pivot point is located between the first pivot point and the eighth pivot point, and the sixth stretching member is provided with a guide block capable of abutting against the fifth stretching member.

5. The elderly chair support according to claim 1 , further comprising a second drive assembly and an angle adjustment member, wherein the angle adjustment member is hinged to a backrest connecting rod connected to the support plate, and the second drive assembly is capable of driving the angle adjustment member to rotate relative to the support plate.

6. The elderly chair support according to claim 5 , wherein the second drive assembly comprises a second electric push rod and a second connecting rod, wherein an end of the second electric push rod is hinged to a third connecting rod, another end of the second electric push rod is hinged to the second connecting rod, the second connecting rod is fixedly connected to the support plate, and the third connecting rod is fixedly connected to the angle adjustment member.

7. The elderly chair support according to claim 1 , wherein the base comprises a first support rod, a second support rod, a third support rod and a fourth support rod, which are fixedly connected end to end in sequence to form a rectangle, wherein a support seat is fixedly provided on each of the first support rod and the third support rod, a bracket is fixedly provided on the support seat, and the anti-torsion tube is capable of abutting against the bracket.

8. The elderly chair support according to claim 7 , wherein a cushion is provided on the bracket.

9. An elderly chair, comprising an elderly chair support:
wherein the elderly chair support comprises a base, a first drive assembly, a power rod, a support assembly, a leg assembly, a first lifting rod, and a second lifting rod,
wherein the support assembly comprises a support plate and an anti-torsion tube fixedly connected to the support plate; two ends of the first lifting rod are pivoted to the support plate and the base respectively, and two ends of the second lifting rod are pivoted to the support plate and the base respectively; and
wherein the first drive assembly is capable of driving the power rod to rotate relative to the support plate to have a first position and a second position, in a case where the power rod is at the first position, the leg assembly stretches and the anti-torsion tube abuts against the base, in a case where the power rod is at the second position, the leg assembly retracts and the anti-torsion tube has a first distance from the base, and in the case where the power rod is at the second position, the first drive assembly is capable of driving the power rod to drive the support plate to move synchronously so that the support plate has a second distance from the base.

10. The elderly chair according to claim 9 , wherein the leg assembly comprises a first stretching member, a second stretching member, a third stretching member, a fourth stretching member, a fifth stretching member, a sixth stretching member, a seventh stretching member, and a support member, wherein the first stretching member is pivoted to the support plate at a first pivot point, the second stretching member is pivoted to the first stretching member, the third stretching member and the power rod in sequence at a second pivot point, a third pivot point and a fourth pivot point respectively, the third pivot point is located between the second pivot point and the fourth pivot point, the fourth stretching member is pivoted to the third stretching member, the support plate and the fifth stretching member in sequence at a fifth pivot point, a sixth pivot point and a seventh pivot point respectively, the fifth pivot point is located between the sixth pivot point and the seventh pivot point, the fifth stretching member is pivoted to the support member, the sixth stretching member has an end pivoted to the support plate at an eighth pivot point and another end pivoted to the seventh stretching member, the seventh stretching member is pivoted to the support member, the sixth pivot point is located between the first pivot point and the eighth pivot point, and the sixth stretching member is provided with a guide block capable of abutting against the fifth stretching member.

11. The elderly chair according to claim 9 , wherein the first drive assembly comprises a first electric push rod and a first connecting rod, wherein the first electric push rod has an end hinged to the base and another end hinged to the first connecting rod, and the first connecting rod is connected to the power rod.

12. The elderly chair according to claim 11

Assignees

• Dewertokin Tech Group Co Ltd

Inventors

• Li Long
• Ye Qiqi
• Yang Liming
• Zhou Weiyao
• Shen Bin
• Tao Kangming
• Wang Guowei

Classifications

• A47C1/0242 Primary

  by electric motors · CPC title

• A47C7/5066

  by rotation · CPC title

• A47C7/5062

  rectilinearly · CPC title

• A47C1/0345 Primary

  characterised by foot-rests actuated by lazy-tongs · CPC title