Angular armrest adjustment assembly

Patent metadata

Field	Value
Publication number	US-2021300568-A1
Application number	US-202017134326-A
Country	US
Kind code	A1
Filing date	Dec 26, 2020
Priority date	Mar 25, 2020
Publication date	Sep 30, 2021
Grant date	—

Abstract

An armrest may comprise a first casing and a second casing coupled to the first casing. An angular armrest adjustment assembly may be located between the first casing and the second casing. The angular armrest adjustment assembly may comprise a hub coupled the first casing, a lever ring configured to engage a splined surface of the hub, and a biasing member configured to bias the second casing away from the lever ring.

First claim

What is claimed is:

1 . An angular armrest adjustment assembly, comprising:
a lever ring including an inner circumferential surface defining a plurality of radially inward teeth; a hub configured to receive a portion of the lever ring, the hub comprising an inner splined surface configured to engage an interference point formed by the portion of the lever ring; and a biasing member configured to apply a force to the lever ring.

2 . The angular armrest adjustment assembly of claim 1 , further comprising a spring support coupled to the lever ring.

3 . The angular armrest adjustment assembly of claim 2 , wherein the biasing member comprises a coil spring located around the spring support.

4 . The angular armrest adjustment assembly of claim 3 , further comprising:
a first shaft clip located between the hub and the lever ring; and a second shaft clip located adjacent to an axial surface of the lever ring, wherein the lever ring is located axially between the first shaft clip and the second shaft clip.

5 . The angular armrest adjustment assembly of claim 4 , further comprising a washer located around the spring support, wherein the biasing member is located between the washer and the axial surface of the lever ring.

6 . The angular armrest adjustment assembly of claim 1 , wherein the lever ring includes a hook extending radially outward from the lever ring.

7 . An armrest, comprising
a first casing; a second casing coupled to the first casing; and an angular armrest adjustment assembly located between the first casing and the second casing, the angular armrest adjustment assembly comprising:
a hub coupled the first casing;
a lever ring configured to engage a splined surface of the hub; and
a biasing member configured to bias the second casing away from the lever ring.

8 . The armrest of claim 7 , wherein the biasing member is located between an internal surface of the second casing and an axial surface of the lever ring.

9 . The armrest of claim 8 , further comprising a spring support coupled to the lever ring, wherein an end of the spring support is located in a channel formed in the internal surface of the second casing.

10 . The armrest of claim 9 , further comprising a shaft located through the first casing and the second casing, wherein an outer circumferential surface of the shaft defines a plurality of first teeth, and wherein the plurality of first teeth are intermeshed with a plurality of second teeth defined by an inner circumferential surface of the lever ring.

11 . The armrest of claim 10 , wherein the angular armrest adjustment assembly further comprises:
a first shaft clip located in a first groove defined the shaft; and a second shaft clip located in a second groove defined by the shaft, wherein the lever ring is located axially between the first shaft clip and the second shaft clip.

12 . The armrest of claim 11 , wherein a portion of the lever ring includes a plurality of interference points configured to engage the splined surface of the hub.

13 . The armrest of claim 12 , wherein a distance between the internal surface of the second casing and the axial surface of the lever ring is greater than a length of engagement between the splined surface of the hub and the lever ring.

14 . The armrest claim 13 , wherein axial translation of the second casing toward the axial surface of the lever ring is configured to disengage the hub from the lever ring.

15 . A seat, comprising:
a frame; a seatback and a seat pan coupled to the frame; an armrest coupled to the frame, the armrest including a first casing and a second casing coupled to the first casing; and an angular armrest adjustment assembly located within an internal volume of the armrest and configured to rotate the armrest relative to the frame, the angular armrest adjustment assembly comprising:
a hub coupled the first casing of the armrest;
a lever ring configured to engage a splined surface of the hub; and
a biasing member configured to bias the second casing of the armrest away from the lever ring.

16 . The seat of claim 15 , wherein axial translation of the second casing toward an axial surface of the lever ring is configured to disengage the hub from the lever ring, and wherein a distance between an internal surface of the second casing and the axial surface of the lever ring is greater than a length of engagement between the splined surface of the hub and the lever ring.

17 . The seat of claim 16 , wherein the biasing member is located between the internal surface of the second casing and the axial surface of the lever ring.

18 . The seat of claim 17 , further comprising a spring support coupled to the lever ring, wherein an end of the spring support is located in a channel formed in the internal surface of the second casing.

19 . The seat of claim 17 , further comprising a shaft coupled to the frame, wherein the shaft is located through the first casing and the second casing, and wherein an outer circumferential surface of the shaft defines a plurality of first teeth, and wherein the plurality of first teeth are intermeshed with a plurality of second teeth defined by an inner circumferential surface of the lever ring.

20 . The seat of claim 19 , wherein the angular armrest adjustment assembly further comprises:
a first shaft clip located in a first groove defined the shaft; and a second shaft clip located in a second groove defined by the shaft, wherein the lever ring is located axially between the first shaft clip and the second shaft clip.

Assignees

• Be Aerospace Inc

Inventors

• Khachane Yashashree Umakant
• Acharya Pradeep

Classifications

• Y02T50/40

  Weight reduction · CPC title

• B64D11/0644 Primary

  Adjustable arm rests · CPC title

• A47C7/543

  movable to inoperative position · CPC title

• A47C7/541

  of adjustable type (adjustable arm-rests of reclining or easy chairs A47C1/03) · CPC title