Patent ID: 7600819

Claim:
An armrest arrangement ( 1 ) for a construction equipment operator seat, wherein the armrest arrangement is configured for lateral adjustment in order to accommodate operators of different size, said armrest arrangement ( 1 ) comprising: a unit ( 3 ) for supporting an arm of an operator of a vehicle seated in the seat; and a first fixing element ( 4 ) connected to the unit ( 3 ) and a second fixing element ( 5 ), which can be fastened to the seat ( 2 ) on the vehicle, wherein the first and the second fixing elements can be adjusted and locked in relation to one another by means of a device ( 6 ) for adjusting the position of the unit ( 3 ) in relation to the seat when using the armrest so that when using the armrest, the adjusting and locking device ( 6 ), which connects the first fixing element ( 4 ) to the second fixing element ( 5 ) at at least two different positions ( 35 , 36 ), is useable to set the unit ( 3 ) to different positions by moving the unit laterally in a direction having a component in a horizontal plane so that the position of the unit is laterally variable in relation to the seat ( 2 ); wherein the adjusting and locking device ( 6 ) comprises a first ball joint ( 13 ) for adjusting reciprocal positions of the first and second fixing elements ( 4 , 5 ) and for adjusting the lateral position of the unit ( 3 ) in relation to the seat ( 2 ) and a second ball joint ( 14 ) arranged along the same geometric axis ( 17 ) as the first ball joint ( 13 ); wherein the first ball joint ( 13 ) comprises a first part ( 18 ) having a convex surface ( 19 ) and a second part ( 20 ) interacting with the first part and having a corresponding concave surface ( 21 ), the first and second parts being arranged between the first and second fixing elements ( 4 , 5 ); and wherein the second ball joint ( 14 ) comprises a first part ( 18 ) having a convex surface ( 19 ) and a second part ( 20 ) interacting with the first part and having a corresponding concave surface ( 21 ), the first and second parts of said second ball joint ( 14 ) being arranged on a first shaft ( 22 ) on the opposite side of the first or the second fixing element ( 4 , 5 ) to the first and second part of the first ball joint ( 13 ).