FR2474848A1 - ARMS - Google Patents

Abstract

ARM REST FOR DRIVING SEAT OF FOREST OR SIMILAR LOGGING MACHINE. AN ARM-SUPPORT SKATE 21 IS CARRIED BY A BAR 19 ARTICULATED AT THE REAR ON A PIVOTING LINKAGE 16, 18 WHICH ALLOWS THE REAR END OF BAR 19. TO BE RAISED AND LOWERED. FRONT ON A SUPPORT BAR 27 WHOSE TOP IS ARTICULATED ON BAR 19 BY A BODY 25, ITS LOWER TRUNK BEING MOBILE IN A COLLAR 28 WITH LOCKING BUTTON. THE STRUCTURE OFFERS A WIDE RANGE OF ADJUSTMENT POSITIONS, WHICH LIMITS THE AFFECTIONS RESULTING FOR THE DRIVER FROM THE FIXITY OF THE POSITION.

Description

The present invention relates to an armrest, particularly

  for driver's seat, for example machine

logging.

  US Pat. Nos. 1,420,924 and 3,140,119 and FR 1 225,390, for example, describe various already known armrests. However, in "Ait of" the existence of these adjustable armrests,

  as well as others, we observe in machine operators

  There has been a sharp increase in sick leave due to diseases of the arms, shoulders and neck. According to doctors

  and physiotherapists, one of the regions of these affections

  that the working position is too static,

  very because there are no easy-to-adjust armrests,

  nor especially adjustable to a sufficient extent.

  The present invention therefore has the general purpose of proposing

  an armrest that overcomes the aforementioned drawbacks and differs from the armrests according to the prior art in that: it can be lifted and lowered both at the front end and at the rear end;

  - it can be tilted both at the front end and at the end

rear end;

  - it is suitable for mounting a combined control

  setting by means of obtaining any longitudinal position

  the desired lateral and inclined one; - It allows to confer the desired working position by an adjustment of a short duration of 15 to 30 seconds, while this period is normally 2 to 4 minutes, and - the armrest pad is adjustable the

  moving closer to or away from the seat back.

  To this end, the armrest according to the invention comprises a support bar which carries an armrest pad and has at its rear end a pivoting connection with a pivoting rod whose pivoting movement allows the lifting and the lowering the rear end of the armrest bar, while the armrest bar is supported at its front end by a support bar,

  whose upper end presents, with the support bar

  arm, a pivoting connection provided by a connecting

  while its lower end is movable and guiding

  through a locking or control element that

  you can turn and lock.

  The single figure of the accompanying drawing illustrates an embodiment of the armrest according to the invention, mounted on one side of the driving seat, designated by the general reference, a logging machine, for example. A

  Similar armrest is mounted on the other side of the seat 10.

  In the usual manner, the seat 10 has a seat

  said or cushion 11 and a backrest 12, whose inclination

is adjustable around an axis 13.

  On the backrest 12, or on a special support panel, is fixed a carrying chair 14 which carries a trunnion 15

  articulation of one end of a rod 16. The other ex-

  end of the rod 16 carries a pivot pin 17 at one end of a second rod 18 which is rigidly

  connected to an armrest bar 19.

  The armrest bar 19 is telescopic and comprises a rear outer tube 19A and a front inner tube 19B,

  lockable one on the other by means of a stop screw 20.

  On the outer tube 19A slides an armrest pad 21, lockable in any desired adjustment position by means of

of a screw 22.

  At its front end, the inner tube 19B is provided with a carrying chair 23 which carries a journal 24 on which

  is articulated a clevis 25, preferably-susceptible to

  universal, carrying a combination control 26, which is shown only schematically. The yoke 23 further ensures the articulation of an end of a support bar 27, possibly having the form of a rack, movable through a locking or control member 28, which can be rotated and locked , located quite at the front

seat cushion 11.

  Preferably, the journals 13, 15, 17 and 24 are of

  known type with self-locking and carry an adjustment button.

  In a simplified embodiment, one can possibly remove the pin 17 and combine the rods 16 and 18 in a single rod, articulated at its front end on the

  arm support bar 19 by a single pin.

  In general, the provisions described are

  various modifications without departing, for

framework of the invention.

-2474848

Claims (3)

  1. Armrest for a driving seat, in particular a forestry machine, characterized in that it comprises an armrest bar (19) which carries an armrest pad (21) and has at its end back a swivel connection   with a pivoting rod (16, 18) whose pivoting movement   both allows the lifting and lowering of the end   rear of the armrest bar (19), the support bar   arm being supported a.son front end by a support bar (27), the upper end of which with the armrest bar (19) an articulated connection provided by   connection member (25), while its lower end   is mobile and guided through a locking device.   or control (28) that can be rotated and rust.   2. Armrest according to claim 1, characterized in that the armrest pad is supported longitudinally   on the armrest strip (19) so as to be able to   expensive and move away from the backrest (12) of the seat (10).   3. Armrest according to claim 1, characterized in   the connecting member (25) between the support bar   arm (19) and the support bar (27) carries a clevis   supporting a combination control (26) or the like.