Armrest

Patent metadata

Field	Value
Publication number	US-11058225-B2
Application number	US-201816129018-A
Country	US
Kind code	B2
Filing date	Sep 12, 2018
Priority date	Sep 13, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

An armrest has a base element, an arm-support element movable in a direction on the base element between a pair of end positions, a mount fixed on one of the elements and formed with a throughgoing hole extending in the direction, and a rod fixed on the other of the elements and extending along an axis with play through the hole of the mount. A pair of inelastic slide-bearing rings fixed in the hole at ends thereof loosely surrounds the rod. A respective elastic bearing block fixed in and relative to each of the rings presses the rod radially against a diametrally opposite inner-surface portion of the respective ring.

First claim

The invention claimed is:

1. An armrest comprising:
a base;
an arm support displaceable linearly relative to the base through intermediate positions between a first position and a second position in opposite displacement directions along a movement path;
a guide assembly comprising a first guide on the base and a second guide on the arm support forming respective guide surfaces movable relative to one another in the displacement directions and limiting movement of the arm support relative to the base transversely to the displacement directions such that there is space between the first guide and the second guide, portions of the guide surfaces of the first and second guides are in contact, one of the first and second guides having a pair of transversely spaced surfaces fixed to the base or to the arm support and through which the other of the first and second guides extends; and
an elastic element in the guide assembly urging the first guide transversely of the displacement directions into contact with the second guide such that contact between the portions is maintained with a transverse force acting perpendicular to the displacement directions on the arm support and on release of the transverse force.

2. An armrest comprising:
a base element;
a support element movable along an axis on the base element between a pair of end positions;
a mount fixed on one of the base and support elements and formed with a hole centered on the axis, extending through the mount, and having an inner surface;
a rod fixed on the other of the base and support elements and extending with radial spacing through the hole of the mount;
a respective inelastic and axially spaced slide-bearing rings fixed in the hole, each having an inner surface projecting radially inward past the inner surface of the hole, and spaced from and surrounding the rod; and
a respective elastic bearing block fixed in and relative to each of the rings and pressing the rod radially and directly against a diametrically opposite portion of the inner surface of the respective ring, the blocks being diametrically opposite each other relative to the axis.

3. An armrest comprising:
a base element;
a support element displaceable forward and backward relative to the base element in a longitudinal direction; a guide having transversely spaced surfaces fixed on one of the base and support elements and between which the other of the base and support elements extends with transverse clearance; and
an elastic element forming one of the surfaces of the guide and elastically urging the other element transversely into engagement with a counter surface of the guide, the elastic element urging the other element transversely into engagement with the counter surface of the guide such that the contact of the other element and the counter surface is maintained with a transverse force acting perpendicular to the longitudinal direction s on the arm support element and on release of the transverse force.

4. The armrest according to claim 3 , wherein the arm support includes a rod on the arm support and the pair of transversely spaced surfaces are on the base or the pair of transversely spaced surfaces are on the arm support and the rod is on the base.

5. The armrest according to claim 4 , wherein the rod is cylindrical and the armrest further comprises:
respective front and back rings each forming one surface of the pair of transversely spaced surfaces and carrying the elastic element of the guide assembly.

6. An armrest comprising:
a base element;
a support element displaceable forward and backward relative to the base element in a longitudinal direction;
front and back longitudinally spaced guides having transversely spaced surfaces fixed on one of the base and support elements and between which a rod of the other of the base and support elements extends with transverse clearance; and
respective elastic elements each forming one of the surfaces of each guide and elastically urging the rod transversely into engagement with a counter surface of the respective guide, the elastic elements being on transversely opposite sides of the rod and urging the rod in opposite transverse directions into engagement with the other counter surface of the respective guide such that contact of the other element with the counter surface is maintained with a transverse force acting perpendicular to the longitudinal direction on the o arm support and on release of the transverse force.

Assignees

• Grammer Ag

Inventors

• Nuss Ralph
• Delling Gerhard

Classifications

• B60N2/753 Primary

  movable to an inoperative position · CPC title

• B60N2205/20

  Measures for elimination or compensation of play or backlash · CPC title

• B60N2/773

  Longitudinal adjustment · CPC title

• A47C7/541 Primary

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

• B60N2/763 Primary

  adjustable · CPC title