US 10,687,626 B2Granted

Elastic seesaw-type tilting mechanism and swivel chair having the same

OwnerCheng Yu Yaninventor

Life of this patent

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Abstract

An elastic seesaw-type tilting mechanism is provided, including: a base support, configured to be connected with a chair base through a chair column; a seat support, being pivotably mounted on the base support and configured to be connected with a seat; a backrest support, being pivotably mounted on the base support and configured to be connected with a backrest; a first elastic mechanism, being connected with the seat support and the backrest support to form an elastic seesaw mechanism; a second elastic mechanism, being connected with the base support and the seat support, the second elastic mechanism and the first elastic mechanism being respectively biased against the seat support in opposite directions. A swivel chair is further provided, including: one of the elastic seesaw-type tilting mechanism as described above, a seat, a backrest, a chair column and a chair base.

Claims10

Dependent claims

An elastic seesaw-type tilting mechanism, including:

a base support, configured to be connected with a chair base through a chair column;
a seat support, being pivotably mounted on the base support and configured to be connected with a seat;
a backrest support, being pivotably mounted on the base support and configured to be connected with a backrest;
a first elastic mechanism, being connected with the seat support and the backrest support to form an elastic seesaw mechanism;
and
a second elastic mechanism, being connected with the base support and the seat support, the second elastic mechanism and the first elastic mechanism being respectively biased against the seat support in opposite directions;
wherein the base support, the seat support and the backrest support are pivotably mounted on a shaft, the first elastic mechanism is pivotably disposed around the shaft, and the shaft serves as a fulcrum and a pivot axis of the first elastic mechanism and the elastic seesaw mechanism.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/291,468Filed 4 Mar 2019
Priority: CN 2018 1 037809125 Apr 2018
Published: US 2019/0328139 A131 Oct 2019
Granted: 23 Jun 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A47C 1/0325
Having adjustable and lockable inclination: by means of clamps or friction locking members
A47C 1/03274
With coil springs: of torsion type
A47C 1/022
Reclining or easy chairs: having independently-adjustable supporting parts
A47C 1/027
The parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination: by means of clamps or friction locking members