EP1258209A2 - Adjustment mechanism for an arm-rest of a chair - Google Patents

Abstract

The adjustment mechanism, in particular, for stepwise adjustment of an arm rest of a seat relative to the seat base comprises a sleeve (13) which is attached to the arm rest, and slides over a tubular member (17.1) attached to the seat base. The tubular member accommodates an assembly of adjustment elements including an adjustment strut (25) and a stop system.

Description

The invention relates to an adjustment mechanism for a a frame to be adjusted, the one with the one to be adjusted Part is connected to the receiving sleeve provided frame-fixed approach is adjustable compared to this, a locking mechanism is provided for gradual adjustment is; it also relates to an armrest for seating, which is based on an armrest support is arranged with a substantially horizontal mounting bracket on the seat or seat support is attachable, and one extending substantially vertically Approach, this approach of a receiving sleeve, on which the armrest is arranged, in particular with arm pads, is overlapped, and with the armrest over the approach over a locking mechanism is gradually adjustable.

Different mechanisms are known for the adjustment, in which the gradual adjustment is achieved with a catch, however be structurally adapted to the respective circumstances have to. A universal use of such adjustment mechanisms is not easily possible. For example, armrests known per se for armchairs and chairs, in particular for swivel chairs using an armrest stand is attached to the seat support of the chair, project substantially horizontally from the backrest. On the Armrest stand is the armrest provided with armrest whose Top is usually padded to make the forearm more comfortable To give conditions. The armrest stand can be used accordingly DE 201 08 247 be designed so that the armrest is adjustable in height is. From DE 295 02 429 is an incrementally height-adjustable armrest known, which has an adjustment mechanism, arranged in a Connecting bridge that forms between two armrest supports Stands extends. With this adjustment mechanism, this embodiment is limited to such an arrangement, it is expensive in the production, therefore not versatile and to different Customizable conditions.

With this invention, an adjustment mechanism for a gradual Adjustment, especially for a gradual height adjustment of Seating armrests are proposed that are versatile and easily adaptable to the different circumstances that economically producible, and which can be used safely, in particular is to provide an armrest with such an adjustment mechanism can be specified. This problem is highlighted by the Features of the main claim solved; advantageous training and preferred embodiments describe the subclaims.

For this adjustment mechanism, the approach is at least partially as Tube trained. An adjustment cartridge is in this tube or in this tube part with a hollow interior essentially positive used and fixed to the frame. For the one you want Positive locking can be done in an advantageous design on the outside the adjustable cartridge or its shells, ribs and / or strips to be put on; on the one hand, this training ensures the form fit, on the other hand, it allows considerable material savings, which enables more economical production. The hollow one The interior of the adjustable cartridge positively increases with that adjusting part connected adjustment sword so that it is opposite the vertical cartridge can be moved. The gradual The locking mechanism provided is within the adjustment cartridge arranged, and is, inserted into the adjustment cartridge, from this is included in the whole. The adjustment cartridge is on the Lower part fixed and in turn provided with an internal cavity, into that with the object to be adjusted relative to the lower part - For example, the armrest of a piece of seating furniture - connected Immersed adjustment sword.

In a first embodiment, the adjustment cartridge is in one piece educated. The adjustment sword is pre-assembled in the interior Cavity inserted and fixed with an inserted brick. In a further embodiment, the adjustment cartridge is designed as a double-shell insert. The adjustment cartridge shows or one of their shells, the locking shell, on the inside of each other spaced short transverse grooves as recesses, which with the The locking mechanism of the locking mechanism interact in such a way that the adjustment of the adjustment sword locked in the adjustment cartridge without triggering unlocked and released so that the adjustment is possible becomes. When not actuated, the locking body engages in one of the latching openings forming short transverse grooves in the one-piece adjustment cartridge or on the inside of the locking shell and thus blocks an adjustment. When the release button is pressed, the release rod moves Locking body withdrawn from the locking opening via the inclined guide and the lock between the adjustment cartridge and adjustment sword is lifted.

The adjustment sword has a mounting plate at its free end to attach to the adjustable part to which an insert follows with a guide groove and guided therein Firing bar. This is at the upper end of the adjustment sword free end of this release rod is brought out and with a release button Mistake. with which the connected release rod to unlock the locking mechanism can be moved for adjustment. The the Adjustment cartridge accommodating the locking mechanism is therefore a guide for that adjustment sword inserted in it, which in turn is the trigger rod the locking mechanism contains and guides.

The locking mechanism is therefore only in the adjustment cartridge arranged and interacts with the adjustment sword. You can in their geometry simply to a geometry of any tubular Adapt the approach. This adjustment can either be done directly, or through an adapter insert, the inner cross section the adjustable cartridge and its outer cross-section the inner cross-section corresponds to the tubular approach. Because the locking mechanism the adjustment mechanism in its entirety inside the adjustment cartridge is arranged, the adjustable cartridge can be so practical adapted to any cross-sectional shape of a tubular or sleeve-shaped attachment be so that this arrangement can be used widely is. Since the adjustable cartridge accommodates the locking mechanism in such a way that Guides and snap-in openings only within the adjustable cartridge are arranged, pollution risks are prevented. The locking openings or locking recesses are inside the adjustment cartridge, they are not accessible from the outside, danger of crushing omitted.

In an advantageous development, the cartridge is provided with a circular cross-section so that they are in the tubular Approach can also be pivoted. To determine the Swivel range and for gradual swiveling is a blocking or Locking mechanism provided, in the simplest case a nose with Interlocking recesses interacts. The locking mechanism is advantageous formed by a resilient latch and correspondingly arranged Locking grooves on the inner wall of the tubular extension and are provided on the outer wall of the adjustment cartridge.

In a preferred embodiment, the adjustment mechanism for the height adjustment of an armrest of a seat used. there the seating furniture has a substantially horizontal one extending fastening strap on the seat or seat support of the underframe armrest support fixed to the frame, which in one substantially vertically extending tubular extension transforms. This approach is from one with the armrest with arm pads connected receiving sleeve overlapped. In the tubular approach is the adjustment cartridge is arranged with the adjustment sword. They are Adjustable cartridge - about with a bolt - with the lower part and the Tab of the seat holder and the adjustment sword with the armrest like this connected that the locking mechanism between the receptacle and the approach is arranged. and so a vertical adjustment of the armrests without Tripping blocks. In a further development, the armrest is designed that further adjustment options are provided, such as in Depth or width or in their angular position.

To release the locking mechanism is a linkage with button and Unlocking body unlocked so that the lock is released. This is with this training the release button at the top of the release rod the locking mechanism led out of the lower part of the armrest. This enables the person sitting to press the release button without any problems and change the height of the armrest. Here are at This training only has smooth surfaces on the outside, danger of crushing for the operator through exposed locking openings attributable

For economical production, at least the locking mechanism is as Plastic injection molded part. That is also advantageous Adjustable cartridge, one-piece or two-shell with the two shells, the probe shell and the locking shell, as plastic injection molded parts educated. The adjustment sword is included in a further training Insert and release bar with release button as plastic injection molded parts educated. That way at least some or all parts of the adjustment mechanism economically as Plastic parts are injected and manufactured, whereby advantageous Polyamide-based plastics are used.

To coat the visible plastic surface, in particular the surface of the receiving sleeve, a powder coating can be provided. For this purpose, the electrical conductivity of the coating required for the discharge of electrostatic charges is set accordingly by adding carbon fiber and / or steel fiber batch. This electrical conductivity is advantageously such that the specific resistance is below 10 ⁵ Ωcm. This charge drain is particularly advantageous if, for example, electronic components have to be handled.

Figur 1:

Armlehne, Verstellkartusche zweischalig, Explosions-Darstellung - Einzelteile auseinander gezogen;

Figur 2:

Armlehne, Verstellkartusche einstückig, Explosions-Darstellung - Einzelteile auseinander gezogen;

Figur 3:

Armlehne nach Fig. 1,
Fig. 3a: Seitansicht,
Fig. 3b: Frontansicht;

Figur 4:

Armlehne nach Fig. 3 geschnitten,
Fig. 4a: Längsschnitt K-K - teilgeschnitten,
Fig. 4b: Längsschnitt J-J - teilgeschnitten;

Figur 5:

Rastmechanik mit vergrößert dargestellter Einzelheit B (Schnitt A-A, Fig. 3a)
Fig. 5a: Verstellung gesperrt,
Fig. 5b: Verstellung entsperrt;

Figur 6:

Armlehne nach Fig. 1, Querschnitt,
Fig. 6a: Schnitt D-D (Fig. 2a),
Fig. 6b: Schnitt C-C (Fig. 2a);

Figur 7:

Zweischalige Verstellkartusche,
Fig. 7a: Ansicht Führungsschalenseite,
Fig. 7b: Ansicht Rastschalenseite,
Fig. 7c: Schnitt entsprechend Schnitt E-E, Fig. 7a;

Figur 8:

Verstellkartusche zweischalig, mit Verstellschwert und Auslösung - auseinander gezogen dargestellt;

Figur 9:

Verstellkartusche einstückig, mit Verstellschwert und Auslösung dargestellt,
Fig. 9a: Schnitt entsprechend A-A, Fig. 3a,
Fig. 9b: Schnitt entsprechend Fig. 9a jedoch außermittig;

Figur 10:

Armlehne mit in Aufnahmehülse verschwenkbarer Verstellkartusche, (Aufsicht - ohne Armstütze);

Figur 11.

Einzelheit Armlehne entsprechend Fig. 10,
Fig. 11a: Schnitt F-F, Fig. 10,
Fig. 11b: Schnitt G-G, Fig. 11a:

Figur 12:

Unterteil der Armstütze mit Schrittverstellung;

Figur 13:

Schnitt entsprechend Schnittlinie H-H, Fig. 12

Figur 14:

Unterteil der Armstütze entsprechend Fig. 13, jedoch Mit Weitenverstellung; (Schnitt H-H, Fig. 12);

Figur 15:

Unterteil der Armstütze mit Weitenverstellung (Schnitt I-I, Fig. 12).

The essence of the invention is explained in more detail with reference to the exemplary embodiments of the adjusting mechanism shown in FIGS. 1 to 15 and relating to an armrest for seating furniture; show:

Figure 1:

Armrest, double-shell adjustable cartridge, exploded view - individual parts pulled apart;

Figure 2:

Armrest, adjustment cartridge in one piece, exploded view - individual parts pulled apart;

Figure 3:

1,
3a: side view,
3b: front view;

Figure 4:

3 cut armrest,
4a: longitudinal section KK - partially cut,
4b: longitudinal section JJ - partially cut;

Figure 5:

Locking mechanism with detail B shown enlarged (section AA, Fig. 3a)
5a: adjustment locked,
Fig. 5b: adjustment unlocked;

Figure 6:

1, cross section,
6a: section DD (Fig. 2a),
Fig. 6b: section CC (Fig. 2a);

Figure 7:

Double-shell adjustable cartridge,
7a: view of the guide shell side,
7b: view of the locking shell side,
7c: section corresponding to section EE, FIG. 7a;

Figure 8:

Adjustment cartridge with two shells, with adjustment sword and release - shown pulled apart;

Figure 9:

Adjustment cartridge shown in one piece, with adjustment sword and release,
9a: section corresponding to AA, Fig. 3a,
9b: section corresponding to FIG. 9a but off-center;

Figure 10:

Armrest with adjustable cartridge that can be swiveled into the receiving sleeve (supervision - without armrest);

Figure 11.

Detail armrest according to Fig. 10,
11a: section FF, Fig. 10,
11b: section GG, Fig. 11a:

Figure 12:

Lower part of the armrest with step adjustment;

Figure 13:

Section according to section line HH, Fig. 12

Figure 14:

Lower part of the armrest according to FIG. 13, but with width adjustment; (Section HH, Fig. 12);

Figure 15:

Lower part of the armrest with width adjustment (section II, Fig. 12).

The armrest 10 consists of an armrest 11, possibly with a Pads are provided to improve the armrest. This armrest is placed with its lower part 12 on a receiving sleeve 14 and firmly connected to this. In this receiving sleeve is the approach 17.1 of the lower part 17 introduced, which via a sleeve 18 (or with the screwable lower part 17 '(Fig. 2, 9) with the base of the chair is connected to the frame. The adjustment sleeve slides during adjustment 14 on the lower part 17 up and down. The receiving sleeve 14 is on provided at its lower end with a terminating insert 15, the inside Spring tongues 15.1, which the receiving sleeve 14 against the lower part 17 support and thus enable a largely play-free movement, which are also designed as raised spring tongues 15.2 and can be provided with locking lugs. Another version is an inner clamping ring 16 is provided which is low-friction and in allows substantial play-free adjustment.

In the tubular extension 17.1 is in a first embodiment a double-shell cartridge 20 used, the lower end formed as a fastening eye 23, by means of a fastening bolt 19 is firmly connected to approach 17.1. Are there one shell as a probe shell 21 and the other shell as a locking shell 22 trained. Compound results in the interior of both Shells a cavity into which an adjustment sword 30 is inserted.

In a second embodiment, the tubular extension 17.1 a one-piece adjustment cartridge 25 used, the lower end with a guided through the socket 28 mounting bolt 19 with the Approach 17.1 is connected. This adjustment cartridge 25 is selected in the 2 of outer rings 26.1, a latticework formed by outer rings 26.1 and outer ribs 26.2, so that a cage structure arises, but this does not exclude other forms of training. The one-piece adjustment cartridge 25 also has one hollow interior, into which the adjustment sword 30 is inserted.

The adjustment sword 30 is formed by an insert 32, on the latter upper end of a mounting plate 31 is provided with which Adjustment sword 30 connected to the lower part 12 of the armrest 11 is. This mounting plate 31 is advantageous with a recess 39 provided, for receiving the upper end of the (explained in more detail later) Trigger 40. The lower end of this insert 32 is with a window 34 extending at right angles to the insert 32, that is intended for the locking mechanism. This one-piece adjustable cartridge 25 or this two-shell, of a probe shell 21 and one Locking shell 22 formed adjustment cartridge 20 contains the entire, for a gradual adjustment necessary locking mechanism. With the one-piece Training it is advantageous if an inserted brick 27 the inserted adjustment sword 30 against being pulled out secures in the same way as that on the inside of the locking shell 22 dr two-shell embodiment provided stops 22.1.

The one-piece adjustment cartridge 25 or the have to lock double-shell adjustment cartridge 20 corresponding locking parts on the inside and guided tours. With the one-piece adjustment cartridge has the wall formed by the spaces between the outer rings 26.1 Breakthroughs that form the locking openings 29, At least this will in the adjustment range, the distances between the outer rings - for example through appropriate reinforcements, as can be seen in FIG. 9b - chosen so that it (almost) the locking body 45 of the locking mechanism can record without play. With the double-shell adjustable cartridge 20 is the stylus shell 21 with a continuous longitudinal groove 21.1 and Locking shell 22 provided with transverse grooves 24 which the locking body 45 as Serve rest stops. Here lies the manufacture with the Transverse grooves 24 to be provided on the wall side of the locking shell 22 so that Here too, both shells are economically manufactured using injection molding technology is possible. In the one-piece embodiment the outer rings 26.1 and the outer ribs 26.2 by appropriate tool design reached. Designed in this way, the one-piece adjustment cartridge, just like the double-shell in injection molding technology and economically producible.

The locking mechanism provided for gradual adjustment is by means of a linkage 40 triggered. This is formed by a trigger bar 42, at the upper end of which a release button 41 is arranged. This release rod 42 is in a guide groove 33 of the insert 32nd guided. The lower end of the release rod 42 has an inclined guide 43 formed with a slope transverse to the locking shell 22 recess on. In this recess, a locking body 45 is mounted on the slope of the inclined guide 43 from the locking opening - either the breakthrough of the one-piece adjustment cartridge 25 or Locking shell 22 of the two-shell adjustment cartridge 20 - moved away can be. when the trigger rod 42 is pressed by the trigger button 41 is pulled.

The locking body 45 protrudes laterally above the inclined guide 43 and lies with its projections 45.1 in the window 34. When actuated the release of the blocking body 45 in the interaction of Oblique guide 43 and window 34 forcibly in one direction at right angles moved to the adjustment sword 30. So the locking body 45 with the transverse grooves 24 cooperate inside the locking shell 22 and so to lock in one of the locking openings - the transverse grooves 24 or Detent openings 29 - immerse or lead out of them to unlock become.

In the rest position, the linkage of the adjustment mechanism is by means of a between the release rod 42 and insert 32 spring 46 held down; for this purpose the insert 32 has a nose as an abutment 32.1 for the spring 46 and the trigger rod 42 on a nose 42.1, the one end of the spring 46 receives. With the release rod held down 42, the locking body 45 against the inclined guide 43 Inner wall of the adjustment sword 20 or 25 pressed and engages in one of the locking points, locking openings 29 or transverse grooves 24, so that as a result of this intervention, a movement of the armrest 11 in the height direction is prevented. If the trigger rod 42 of the adjusting device pulled over the release button 41, the inclined guide moves 43 opposite the locking body 45, and lifts it out of the corresponding rest stop. Locking opening 29 or transverse grooves 24, so that the armrest can now be moved.

Tubular attachment 17.1 and adjusting cartridge 25 are advantageous equipped with a matching circular cross-section. So is a pivoting of the adjustment cartridge 25 within the approach 17.1 possible, and - since the armrest 11 with pad 12 with that in the adjustable cartridge adjustment sword 30 secured against rotation is connected - thus also a pivoting of the armrest 11 in essential horizontal plane. Be advantageous between the Inner wall of the approach 17.1 and the outer wall of the double-skin Adjustment cartridge 20 or the one-piece adjustment cartridge 25 or locking means provided, on the one hand, the angular range of the pivoting limit and on the other hand a gradual swiveling enable. The angular range for the possible pivoting is given by the angular range of the locking or latching means, the step by step from the distance of the locking grooves 17.2 or the locking calottes or ridges 27.1. In an advantageous training the stroke of the adjustment sword 30 in the one-piece adjustment cartridge 25 bounding block 27 provided with a recess (Fig. 9a), into which a locking bead 27.1 is inserted. This is with one provided resiliently acting backing 27.2, for example with a molded elastomer. When swiveling, the locking lug is released pushed back out of the locking groove, the rubber-elastic backing 27.2 excited; when the next locking groove is reached, the locking bead becomes pressed into this. Because to push back the latch a certain Force must be applied, the size of which depends on the formation of the elastic Deposit 27.2 and depends on the shape of the locking grooves, can be achieved in such a way that it is released Forces of the desired size are required.

This adjustment mechanism with the base fixed Adjustment cartridge 20 and that inserted into this adjustment cartridge 20 Adjustable sword 30 can be used universally. The one-piece Adjustment cartridge 25 or the two-shell adjustment cartridge 20 can inserted into each tubular lower part, and the adjustment sword 30 can be connected to any object, so that this Object can be gradually adjusted compared to the recording.

In a further development of an armrest with in by its longitudinal extension given depth direction adjustable armrest 11 is in the lower part 12 of the armrest 11, a board 51 is arranged, the by means of the screws 52 (FIG. 13a) or the screws 54 (FIG. 13b) with the mounting plate forming the head of the adjustment sword 40 41 or under their inclusion with the head of the receiving sleeve 14 are connected. The bottom 13 of the lower part 12 of the armrest 11 is thereby between this board and the head of the receiving sleeve 14 slidably mounted.

The adjustment sword 40 is inserted into the adjustment cartridge 30 is in turn located in the receiving sleeve 14. The screws 52 or 54 are thereby through slots 13.1 pointing in the depth direction performed, provided in the bottom 13 of the lower part 12 of the armrest 11 are. This is the board 51 on the mounting plate 41 of the adjustment sword 40 set so that armrest 11 with adjustment sword 40 can be moved if their altitude is to be changed. to Depth adjustment of the armrest 11 can now be moved because its lower part 12 opposite the (fixed to the frame) circuit board 51 is movable. For this purpose, its head has screw domes 38, which in the Elongated holes 12.1 are guided, the height of the screw domes 38 a Prevent tensioning and allow perfect gliding.

To achieve a gradual adjustment, locking means are between the bottom 13 of the lower part 12 of the armrest 11 is provided. These are shown in a (only schematically indicated in FIG Receiving sleeve 14) embodiment formed in that the bottom 13 of the lower part 12 is provided with locking recesses 13.2 in the one arranged on the top of the head of the receiving sleeve 14 Resting dome 14.1 engages. This advantageously shows - as already described - a rubber-elastic backing as a spring member, with to which the locking is ensured. For moving the armrest 12 a force is now exerted in the direction of displacement that the Locking dome 14.1 which slide onto the sloping wall of the locking trough 13.2 leaves. The locking dome 14.1 is pushed back and so the Detent connection released.

In a second embodiment (also in FIGS. 14 and 15) shown with only schematically indicated receiving sleeve 14) Board 51 provided with the locking cap 53, and - in the illustration raised intermediate floor 13 'of the lower part 12 of the armrest 11 has locking troughs 13.2 into which the locking cap 53 falls. In this configuration, it is advantageous if the board 51 as a result the curvature of the lower part 12 is biased so that the through the deformation caused by restoring forces causes the locking. It it goes without saying that each of the dome-shaped training courses, too can be used in the other arrangement.

There is a receiving sleeve attachment 60 inserted in FIGS. 14 and 15 in cooperation with the raised intermediate floor 13 'beyond Space in a further development between the fastening plate 31 the adjustment sword 30 and the lower part 12 of the armrest 11 means to be provided, which allow a width adjustment of the armrest. To is with the screws 52 a receiving sleeve attachment 60 with the receiving sleeve 14 screwed so that that stored in the adjustment cartridge 20 Adjustment sword 30 with its mounting plate 31 between is movably clamped, with screw domes 38 (FIGS. 3, 4. 5) ensure the necessary distance. So the above is close described height adjustability given.

This receiving sleeve attachment 60 is designed such that a transverse guide insert 61 can be inserted. This cross guide insert has guide grooves 62 provided on both sides, which correspond with corresponding Guide strips on the inside of the base of the receiving sleeve attachment 60 cooperating a guide at right angles to Force the armrest 11 to be longitudinal.

Furthermore, a recess is provided in the center of the transverse guide insert 61, which is provided with a locking pin 63 which - as already described - is provided with an elastic backing that it presses into one of the locking grooves that correspond to the locking bolt 63 on the inside of the bottom of the receiving sleeve attachment 60 are arranged, and with which the locking pin 63 cooperates. The Movability is also ensured here by elongated holes that rectilinear guidance through the interaction of the guide grooves 62 with the guide rails.

An adjustment force exerted on the side causes that the locking pin 63 pressed into a locking groove 64 against that of the elastic backing force is pressed back, so that the locking is released, and the armrest approximately at right angles can be shifted to their length.

Claims (16)

Adjustment mechanism for a part to be adjusted relative to a frame, in particular for an armrest to be adjusted relative to the underframe of a piece of furniture, which is provided with a receptacle sleeve connected to the part to be adjusted, which is adjustable over a frame-fixed attachment relative to the latter, with a gradual adjustment Locking mechanism is provided, characterized in that the extension (17.1) is at least partially designed as a tube, into which an adjustment cartridge (20; 25) with a hollow interior is firmly inserted, into which an adjustment sword (30) connected to the part to be adjusted is placed it is introduced that it can be displaced relative to the adjustment cartridge (20; 25), the latching mechanism being arranged within the adjustment cartridge (20; 25). Adjusting mechanism according to claim 1, characterized in that the adjusting sword (30) is formed by an insert (32) having a guide groove (33) and guided therein on its free end by a mounting plate (31) for attachment to the adjustable part free end of a release button (41) having a release rod (42), the insert (32) on its end in the adjustment cartridge (20; 25) having a window (34) oriented at right angles to the insert and the release rod (42) on its in the Adjusting cartridge (20; 25) lying end has an inclined guide (43) as a guide link for an inserted blocking body (45), which protrudes laterally from the inclined guide (43) with its projections (45.1) in the window (34) when the Trigger rod (42) can be inserted into or moved out of the corresponding latching openings at right angles to the axis of the adjustment sword (30). Adjusting mechanism according to claim 1 or 2, characterized in that the adjusting cartridge is designed as a one-piece insert (25), the inside of the cavity of the adjusting cartridge (25) receiving the adjusting sword (30) having the latching openings, the latching openings being formed by a number Recesses spaced apart from each other and interacting with the blocking body (45) as latching openings (29). Adjusting mechanism according to claim 3, characterized in that the wall of the one-piece adjusting cartridge (25) is formed by outer rings (26.1) and longitudinal ribs (26.2), the spaces between which form the recesses acting as latching openings (29). Adjusting mechanism according to claim 1 or 2, characterized in that the adjusting cartridge (20) is designed as a two-shell insert, with a push button shell (21) and a locking shell (22) having the locking openings, the locking openings being formed by a number of spaced apart, with the locking body (35) cooperating transverse grooves (24). Adjusting mechanism according to one of claims 2 to 5, characterized in that the trigger rod (42) cooperates with a preferably biased spring (46) so that the trigger rod (42) is held with its inclined guide (43) in the locked position in which the Locking body (45) engages in one of the transverse grooves (24) or locking openings (29) forming the locking openings. Adjustment mechanism according to one of claims 1 to 6, characterized in that the clear cross-section of the tubular extension (17.1) and the outer cross-section of the adjustment cartridge (20:25) used therein are circular, for their pivotability in the extension (17.1), preferably A locking or latching mechanism is provided between the adjustment cartridge (20; 25) and attachment (17.1), so that the adjustment cartridge (20; 25) can be pivoted step by step in the receiving sleeve (17). Adjusting mechanism according to claim 7, characterized in that to form the locking mechanism, the head of the adjusting cartridge (20; 25) and the end of the receiving sleeve (17.1) corresponding to the head are provided with locking lugs or locking beads (27.1) or with corresponding locking grooves (17.2) , wherein the locking lug / locking bead (27.1) is preferably provided with a spring-elastic deposit. Adjustment mechanism according to one of claims 1 to 8, characterized in that the adjustment cartridge (20; 25) and / or the adjustment sword (25) with the insert (27) and release rod with release button (32, 31) and / or the locking mechanism as a plastic Injection molded part. Adjusting mechanism according to one of claims 1 to 9, characterized in that the surface of the receiving sleeve (13) injection molded from plastic is coated with a powder coating, preferably a polyamide-based plastic made conductive by carbon fiber and / or steel fiber batch is provided for the powder coating , Armrest for a piece of furniture, which is arranged on an armrest support, which can be fastened to the seat or seat support with a substantially horizontally extending fastening tab, and which has a substantially vertically extending extension, this armrest having an adjustment mechanism according to one of Claims 1 to 9 is provided, characterized in that the adjustment cartridge (20; 25) is inserted into the at least partially tubular extension (17.1), the foot of which is firmly connected to the lower part (17) by means of a fastening bolt (19), and into the one Adjustment sword (30) with the release (40) of the locking mechanism dips into the upper end of which the armrest (11) is firmly connected. Armrest according to claim 11, characterized in that the release button (41) arranged at the upper end of the release rod (42) of the latching mechanism is led out of the lower part (12) of the armrest (11). Armrest according to claim 11 or 12, characterized in that the armrest (11) is provided with means for displacement in the longitudinal direction of the armrest 12 corresponding depth direction, wherein preferably a latching mechanism is provided to enable gradual displacement. Armrest according to Claim 13, characterized in that a plate (51) is inserted as the locking mechanism in the lower part (12) of the armrest (11), which is connected to the fastening plate (31) of the adjustment sword (54) by means of screws (54) guided through elongated holes (12.1). 30) and which slides on a locking rib (55), locking means in the form of a locking cap (52) and locking points (56) being provided between the circuit board (51) and locking rib (55), the circuit board (51) preferably is guided so that it is under an elastic prestress. Armrest according to one of claims 11 to 14, characterized in that the armrest (11) is provided with means for displacement in the width direction, wherein a latching mechanism is preferably provided to enable gradual displacement. Armrest according to Claim 15, characterized in that a receptacle sleeve attachment (60) is provided as a means for displacing the armrest (12) in the width direction between the fastening plate (31) of the adjustment sword (30) and the lower part (12) of the armrest (11), in which a transverse guide insert 61 is inserted, which has a latching bolt (63) with an elastic backing, which interacts with a correspondingly arranged latching groove (64) on the inside of the bottom of the receiving sleeve attachment (60).

Images