EP1258209B1 - 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 adjusting mechanism for a opposite a frame to be adjusted part, with a to be adjusted with the Part connected receiving sleeve is provided, the one frame-fixed approach across this is adjustable, wherein provided for stepwise adjustment, a latching mechanism is; It also relates to an armrest for a seating furniture, which an armrest support is arranged with a substantially horizontally extending fastening tab on the seat or seat support is fastened, and the one extending substantially vertically Approach, this approach of a receiving sleeve, on which the armrest is arranged in particular with arm pad, is overlapped, and with the armrest opposite the approach over a locking mechanism is gradually adjustable.

To adjust different mechanisms are known in which the gradual adjustment is achieved with a detent, however be adapted constructively to the respective circumstances have to. A universal use of such adjustment mechanisms is not readily possible. Thus, for example, known armrests for armchairs and chairs, in particular for swivel chairs, by means of an armrest stand are attached to the seat support of the chair, projecting substantially horizontally from the backrest. On the Armrest stand is the armrest with armrest provided, whose Top is usually padded to give the forearm a more comfortable To give edition. Here, the armrest stand accordingly DE 201 08 247 be designed so that the armrest height adjustable is. From DE 295 02 429 is a stepwise height adjustable armrest known, which has an adjustment mechanism, arranged in one Connecting bridge, which is between two armrest support forming Stands extends. With this adjustment mechanism is this embodiment limited to such an arrangement, it is expensive in the production, thus not versatile and to different Customizable conditions.

With this invention, an adjustment mechanism for a stepwise Adjustment, in particular 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 is safe to use, in particular intended to provide an armrest with such an adjustment mechanism be specified. This problem is characterized by the characterizing Features of the main claim solved; advantageous developments and preferred embodiments describe the subclaims.

For this adjustment mechanism, the approach is at least partially as Pipe formed. In this pipe or in this pipe part is an adjustment cartridge with a hollow interior substantially positive fit used and fixed to the frame connected to this. For the desired Positive locking can in an advantageous embodiment on the outside the adjustment cartridge or its shells, ribs and / or strips be set up; this training ensures on the one hand the form-fitting, however, on the other hand, it allows considerable material savings, which allows a more economical production. The hollow Interior of the adjustment cartridge adopts positively with the adjusting part connected adjusting sword so that it is opposite the Vertellkartusche is displaceable. The step by step Adjustment provided latching mechanism is within the adjustment cartridge arranged, and is, inserted into the adjustment cartridge, of this taken in the entirety. The adjustment cartridge is on the Lower part defined and in turn provided with an inner cavity, in the with the opposite to the lower part to be adjusted object - For example, the armrest of a chair - connected Adjusting sword dips.

In a first embodiment, the adjustment cartridge is in one piece educated. The adjusting sword is preassembled in the inner Cavity inserted and fixed with an inserted locking stone. In a further embodiment, the adjustment cartridge designed as a double-shell insert. In this case, the adjustment cartridge or one of their shells, the locking shell, inside each other spaced short transverse grooves as locking recesses, with the Locking body of the locking mechanism cooperate so that the adjustment of the adjusting blade in the adjustment cartridge unlocked and unlocked is unlocked, so that then allows the adjustment becomes. Inoperative, the locking body engages in one of the detent openings forming short transverse grooves in the one-piece adjustment cartridge or on the inside of the locking shell and locks so an adjustment. When the shutter button is pressed, the trip bar is moved, the Lock body withdrawn via the inclined guide from the detent opening and lifted the lock between the adjustment cartridge and the adjusting blade.

The adjusting blade has at its free end a mounting plate for attaching to the adjustable part, to the an insert joins with a guide groove and guided therein Firing bar. At the upper end of the adjusting sword that is free end of this trip bar led out and with a shutter button provided with the connected trip bar for unlocking the locking mechanism can be moved for adjustment. The the Rastmechanik receiving adjustment cartridge is thus guide for the inserted adjusting sword, which in turn the trigger bar the locking mechanism contains and leads.

Thus, the locking mechanism is only in the adjustment cartridge arranged and interacts with the adjusting sword. She lets herself in their geometry simply to a geometry of any tubular Adapt approach. This adjustment can be done either directly, or by a adapter insert whose inner cross section the adjustment cartridge and its outer cross section of the inner cross section corresponds to the tubular approach. Because the locking mechanism the adjustment mechanism in its entirety inside the adjustment cartridge order, the adjustment cartridge can be so practical adapted each cross-sectional shape of a tubular or sleeve-shaped approach so that this arrangement can be widely used is. Since the adjustment cartridge receives the locking mechanism so that Guides and detent openings exclusively within the adjustment cartridge are arranged, pollution hazards are prevented. The detent openings or detent recesses lie in the interior of the adjustment cartridge, they are not accessible from the outside, crushing dangers omitted.

In an advantageous development is provided, the cartridge with a circular cross section in such a way that they in the tubular Approach can also be pivoted. Determining the Pivoting range and for gradual pivoting is a blocking or latching mechanism provided, in the simplest case a nose, with Locking depressions cooperates. The latching mechanism becomes advantageous formed by a resilient detent and arranged corresponding thereto Latching 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 adjusting mechanism for the height adjustment of an armrest of a seat used. there has the seating one by means of a substantially horizontal extending fastening tab on seat or seat support of the undercarriage Fixed to the armrest carrier mounted in a in a substantially vertically extending tubular extension passes. This approach is one with the armrest with arm pad overlapped receiving sleeve overlapped. In the tubular approach is arranged the adjustment cartridge with the adjusting blade. They are the Adjusting cartridge -some with a bolt- with the base and the Lug of the seat support and the adjusting sword with the armrest so connected to the latching mechanism between recording and approach is arranged, and so a vertical adjustment of the armrests without Triggering locks. 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 trigger the locking mechanism via a linkage with button and Barrier unlocked so that the lock is lifted. This is included This training the trigger button at the top of the trip bar the latching mechanism led out of the lower part of the armrest. This allows the sitter to easily press the shutter button and so to change the height adjustment of the armrest. Here are at This training outwardly only smooth surfaces available, crushing hazards for the operator by exposed detent openings attributable

For economic production is at least the locking mechanism as Plastic injection molded part formed. The advantage is also the Adjusting cartridge, one-piece or two-shell with the two shells, the button shell and the locking shell, as plastic injection molded parts educated. In a further embodiment, the adjusting sword with Insert and release bar with release button as plastic injection molded parts educated. That way, at least some can or all parts of the adjustment economically as Plastic parts sprayed and made so, being advantageous Polyamide-based plastics are used.

To compensate for the visible plastic surface, in particular the surface of the receiving sleeve, a powder coating may be provided. For this purpose, the necessary for the discharge of electrostatic charges electrical conductivity of the coating is adjusted by additions of carbon fiber and / or Stahlfaserbatch accordingly. Advantageously, this electrical conductivity is such that the specific resistance is below 10 ⁵ Ωcm. This charge discharge is particularly advantageous when it comes to handling electronic components.

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 will be described with reference to the illustrated in Figures 1 to 15, related to an armrest for a seat embodiments of the adjustment mechanism; show:

FIG. 1:

Armrest, double-chamber adjustment cartridge, exploded view - parts pulled apart;

FIG. 2:

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

FIG. 3:

Armrest according to FIG. 1,
Fig. 3a: side view,
Fig. 3b: front view;

FIG. 4:

Armrest cut according to FIG. 3,
4a: longitudinal section KK - partially cut,
Fig. 4b: longitudinal section JJ - partially cut;

FIG. 5:

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

FIG. 6:

Armrest according to FIG. 1, cross-section,
6a: section DD (FIG. 2a), FIG.
Fig. 6b: section CC (Fig. 2a);

FIG. 7:

Two-shell adjustment cartridge,
7a: view guide shell side,
Fig. 7b: view locking shell side,
Fig. 7c: section corresponding to section EE, Fig. 7a;

FIG. 8:

Double-shell adjustment cartridge, with adjustable blade and release - shown pulled apart;

FIG. 9:

Adjusting cartridge in one piece, shown with adjusting blade and release,
9a: section corresponding to AA, Fig. 3a,
Fig. 9b: Section corresponding to Figure 9a but off-center;

FIG. 10:

Armrest with adjusting cartridge which can be swiveled in receiving sleeve, (supervision - without armrest);

FIG. 11.

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

FIG. 12:

Lower part of the armrest with step adjustment;

FIG. 13:

Section corresponding to section line HH, FIG. 12

FIG. 14:

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

FIG. 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 attached to this. Into this receiving sleeve is the approach 17.1 of the lower part 17 introduced via a sleeve 18 (or with the screw-down base 17 '(Fig. 2, 9) with base of the chair is firmly connected to the frame. With an adjustment, the receiving sleeve slides 14 on the lower part 17 up or down. The receiving sleeve 14 is on provided at its lower end with a termination insert 15 inside Has spring tongues 15.1, the receiving sleeve 14 against the lower part Supported 17 and thus allow a largely backlash-free movement, which also designed as raised spring tongues 15.2 and can be provided with locking lugs. In another embodiment is an inner clamping ring 16 is provided which has a low-friction and in the essential clearance-free adjustment allows.

In the tubular neck 17.1 is in a first embodiment a two-shell adjustment cartridge 20 is used, the lower end formed as a fastening eye 23, by means of a fastening bolt 19 is firmly connected to the approach 17.1. There are one shell as a button shell 21 and the other shell as a locking shell 22 formed. Composed results in the interior of both Shells a cavity into which a Verstellschwert 30 is inserted.

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

The adjusting blade 30 is formed by a slot 32, at the upper end a mounting plate 31 is provided, with which the Adjusting blade 30 connected to the lower part 12 of the armrest 11 is. This mounting plate 31 is advantageous with a recess 39, for receiving the upper end of the (explained later) Trigger 40. The lower end of this slot 32 is with a provided at right angles to the slot 32 extending window 34, which is intended for the locking mechanism. This one-piece adjustment cartridge 25 or these clam shell, of a button shell 21 and a Locking shell 22 formed adjustment cartridge 20 contains the entire, for a stepwise adjustment necessary locking mechanism. At the one-piece Training, it is advantageous if an inserted locking stone 27 the inserted Verstellschwert 30 against pulling out secured in the same way as on the inside of the locking shell 22 dr bivalene embodiment provided stop 22.1.

For locking, the one-piece adjustment cartridge 25 or double-shell adjustment cartridge 20 inside corresponding locking points and guides on. In the one-piece adjustment cartridge has the wall formed by the interstices of the outer rings 26.1 Breakthroughs that form the locking openings 29, this will be at least in the adjustment of the distances of the outer rings - for example by corresponding reinforcements, as can be seen in FIG. 9b, chosen so that they the locking body 45 of the locking mechanism (almost) can record without play. In the double-shell adjustment cartridge 20 is the probe shell 21 with a continuous longitudinal groove 21.1 and the Locking shell 22 provided with transverse grooves 24 which the blocking body 45 as Rest stops serve. Here lies in the production with the Quernuten 24 to be provided wall side of the locking shell 22 free, so that Here, too, an economical production of both shells in injection molding is possible. In the one-piece embodiment the outer rings 26.1 and the outer ribs 26.2 by appropriate tool design reached. So formed, are the one-piece adjustment cartridge, how the two-shell in injection molding easy and economically producible.

The measures provided for the stepwise adjustment latching mechanism is by means of a linkage 40 triggered. This is made from a trip bar 42, at the upper end of a release button 41 is arranged. This release bar 42 is in a guide groove 33 of the drawer 32nd guided. The lower end of the trip bar 42 has a slanted guide 43 formed with a slope transverse to the locking shell 22 recess on. In this recess, a blocking body 45 is mounted, the on the slope of the inclined guide 43 of 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 trip bar 42 by means of the shutter button 41st is pulled.

In this case, the blocking body 45 projects laterally beyond the inclined guide 43 and lies with its projections 45.1 in the window 34. When pressed the triggering is so the locking body 45 in the interaction of Inclined guide 43 and window 34 forcibly in a direction perpendicular moved to the adjusting blade 30. Thus, the locking body 45 with the transverse grooves 24 cooperate in the interior of the locking shell 22 and so for locking in one of the latching openings - the transverse grooves 24 and the Rest openings 29 - immerse or led out to unlock them become.

At rest, the linkage of the adjusting mechanism by means of a between trip rod 42 and insert 32 arranged spring 46th held down; For this purpose, the insert 32 has a nose as an abutment 32.1 for the spring 46 and the trip bar 42 a nose 42.1, the which receives one end of the spring 46. With the held down trigger bar 42, the locking body 45 via the inclined guide 43 against the Inner wall of the adjusting sword 20 or 25 pressed and engages one of the latching points, latching openings 29 and transverse grooves 24, so that as a result of this engagement movement of the armrest 11 in the height direction is prevented. Will the trip bar 42 of the adjustment Pulled over the trigger button 41, the inclined guide moves 43 opposite the locking body 45, and lifts this from the corresponding rest stop. Latch opening 29 and transverse grooves 24, so that now the armrest can be moved.

Advantageous tubular approach 17.1 and adjustment cartridge 25th equipped with matching circular cross-section. Thus is a pivoting of the adjustment cartridge 25 within the neck 17.1 possible, and - because the armrest 11 with pad 12 with the in the adjustment cartridge anti-twist guided Verstellschwert 30 firmly is connected - thus pivoting the armrest 11 in the essential horizontal plane. Be beneficial between the Inner wall of the approach 17.1 and the outer wall of the clam shell Adjustment cartridge 20 or the one-piece adjustment cartridge 25 blocking or locking means provided, on the one hand, the angular range of the pivoting limit and on the other hand also a gradual pivoting enable. The angle range for possible pivoting is given by the angle range of the locking or locking means, the stepwise from the distance of the locking grooves 17.2 and the Rastkalotten or -wülste 27.1 lie. In an advantageous embodiment of the the stroke of the Verstellschwertes 30 in the one-piece adjustment cartridge 25 delimiting locking block 27 provided with a recess (FIG. 9a), in which a locking bead 27.1 is inserted. This one is with one spring-elastic acting backing 27.2 provided, about with a molded elastomer. When pivoting, the locking lug is by exit pushed back from the Rastnute, the rubbery elastic backing 27.2 strained; when reaching the next Rastnute the Rastwulst pressed into this. As for pushing back the latch a certain Force must be expended, whose size depends on the training of the elastic Hinterlage 27.2 and depends on the shape of the locking grooves, can be achieved as a catch, to pick it up Forces of the desired size are needed.

This so formed adjusting mechanism with the base-fixed Adjustment cartridge 20 and the inserted into this adjustment cartridge 20 Adjusting blade 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 adjusting blade 30th can be connected to any object, so this one Subject to the recording gradually can be adjusted.

In a development of an armrest with in through the longitudinal extent 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 head of the adjusting blade 40 forming the mounting plate 41 or under their inclusion with the head of the receiving sleeve 14 fixed are connected. The bottom 13 of the lower part 12 of the armrest 11 is between this board and the head of the receiving sleeve 14th slidably mounted.

The adjusting blade 40 is inserted into the adjustment cartridge 30, the in turn is in the receiving sleeve 14. The screws 52 or 54 are by pointing in the depth direction slots 13.1 guided, which provided in the bottom 13 of the lower part 12 of the armrest 11 are. Thus, the board 51 is on the mounting plate 41 of the adjusting sword 40 set so that armrest 11 with adjusting sword 40 can be moved when their altitude is to be changed. to Depth adjustment of the armrest 11 can now be moved because whose lower part 12 opposite the (fixed to the frame) board 51st is movable. For this purpose, the head screwdriver 38, which in the Long holes 12.1 are guided, the height of the screw domes 38 a Prevent distortion and allow proper 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 in a (in Figure 13 with only schematically indicated Receiving sleeve 14 shown) embodiment formed by that the bottom 13 of the lower part 12 is provided with latching recesses 13.2, in one arranged on the top of the head of the receiving sleeve 14 Rastkalotte 14.1 engages. This has advantageous - as already described - a rubber elastic backing as a spring member, with the locking is secured. To move the armrest 12 Now a force is exerted in the direction of displacement, the Rastkalotte 14.1 slip on the sloping wall of the locking recess 13.2 leaves. The Rastkalotte 14.1 is pushed back and so the Detent connection solved.

In a second embodiment (in Figs. 14 and 15 also is shown with only schematically indicated receiving sleeve 14) is the Board 51 provided with the Rastkalotte 53, and the - in the illustration raised intermediate bottom 13 'of the lower part 12 of the armrest 11 has locking recesses 13.2, in which the Rastkalotte 53 occurs. In this embodiment, it is advantageous if the board 51 as a result the curvature of the lower part 12 is biased so that through the deformation caused restoring forces causes the locking. It It goes without saying that each of the Rastkalotten training also in the other arrangement application can find.

A receiving sleeve attachment 60 inserted in FIGS. 14 and 15 gives in cooperation with the raised intermediate floor 13 'beyond Space to in a training between the mounting plate 31st the adjusting blade 30 and the lower part 12 of the armrest 11 means provide that 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 stored in the adjustment cartridge 20 Adjusting blade 30 with its mounting plate 31 between both movably clamped, with screw domes 38 (Figures 3, 4. 5) ensure the necessary distance. Thus, the above is near given height adjustment given.

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

Furthermore, a return is centrally provided in the transverse guide insert 61, which is provided with a locking pin 63, which - as already described - is provided with an elastic backing, which is him pushes into one of the locking grooves, which correspond to the locking pin 63 on the inside of the bottom of the receiving sleeve attachment 60th are arranged, and with which the locking pin 63 cooperates. The Mobility is ensured here by slots that rectilinear guide by the interaction of the guide grooves 62 with the guide rails.

For adjustment causes a laterally exerted adjusting that the depressed in a locking groove 64 locking pin 63 against the of the elastic restraining force applied restoring force is pushed back, so that the Verastung is lifted, and the armrest approximately at right angles can be moved to its length extension.

Claims (16)

1. Adjustment mechanism for a part to be adjusted with respect to a frame, in particular for an armrest to be adjusted with respect to the underframe of an upholstered seat, said armrest being provided with a receptacle sleeve connected with the part to be adjusted, which receptacle sleeve engaging over the top of a projection fixed to the frame is adjustable with respect thereto, with a latching mechanism being provided for gradual adjustment, characterised in that the projection (17.1) is at least partially configured as a tube, into which an adjustment cartridge (20; 25) with a hollow cavity is fixedly inserted, into which an adjustment blade (30) connected with the part to be adjusted is introduced, such that it is displaceable with respect to the adjustment cartridge (20; 25), with the latching mechanism being located inside the adjustment cartridge (20: 25).
2. Adjustment mechanism as claimed in Claim 1, characterised in that the adjustment blade (30) is formed by an insert (32) having at its free end an attachment plate (31) for fixing to the adjustable part with a guide groove (30) and guided therein a release bar (42) having at its free end a release button (41), with the insert (32) having at the end located in the adjustment cartridge (20; 25) a window (34) aligned at right angles to the insert and the release bar (42) having at the end located in the adjustment cartridge (20; 25) an inclined guide (43) as a guide connecting link for an inserted locking body (45), which projecting laterally with its projections (45.1) out of the inclined guide (43) is guided in the window (34), on actuation of the release bar (42) at right angles to the axis of the adjustment blade (30) can be introduced into one of the corresponding latching openings or moved out of these.
3. Adjustment mechanism as claimed in Claim 1 or 2, characterised in that the adjustment cartridge is configured as a one-piece insert (25), with the inner side of the hollow of the adjustment cartridge (25) receiving the adjustment blade (30) having the latching openings, with the latching openings being formed by a number of recesses located at a distance from one another acting as latching openings (29) and interacting with the locking body (45).
4. Adjustment mechanism as claimed in Claim 3, characterised in that the wall of the integrally formed adjustment cartridge (25) is formed by outer rings (26.1) and longitudinal ribs (26.2), the gaps of which form the recesses which act as latching openings (29).
5. Adjustment mechanism as claimed in Claim 1 or 2, characterised in that the adjustment cartridge (20) is configured as a two-shell insert, with a touch shell (21) and a latching shell (22) having the latching openings, with the latching openings being formed by a number of transverse grooves (24) located at a distance from one another interacting with the locking body (35).
6. Adjustment mechanism as claimed in any one of Claims 2 to 5, characterised in that the release bar (42) with a preferably biased spring (46) interacts such that the release bar (42) is held with its inclined guide (43) in the locking position, in which the locking body (45) engages into one of the transverse grooves (24) forming the latching openings or into the latching openings (29).
7. Adjustment mechanism as claimed in any one of Claims 1 to 6, characterised in that the clear opening of the tubular projection (17.1) and the outer cross-section of the adjustment cartridge (20; 25) inserted therein have a spherical form so that they can swivel in the projection (17.1), with a locking or latching mechanism preferably being provided between the adjustment cartridge (20; 25) and projection (17.1), so that the adjustment cartridge (20; 25) can be gradually swivelled in the receptacle sleeve (17).
8. Adjustment mechanism as claimed in Claim 7, characterised in that in order to form the latching mechanism the head of the adjustment cartridge (20; 25) and the end of the receptacle sleeve (17.1) corresponding to the head are provided with detents or latching beads (27.1) or with corresponding latching grooves (17.2), with the detent/latching bead (27.1) preferably being provided with an elastically acting support.
9. Adjustment mechanism as claimed in any one of Claims 1 to 8, characterised in that the adjustment cartridge (20; 25) and/or the adjustment blade (25) having the insert (27) and release bar with release button (32, 31) and/or the latching mechanism are configured as plastic injection moulded parts.
10. Adjustment mechanism as claimed in any one of Claims 1 to 9, characterised in that the surface of the receptacle sleeve (13) injection moulded from plastic is finished with a powder coating, with preferably a polyamid-based plastic made conductive by carbon fibre and/or steel fibre batch being provided for the powder coating.
11. Armrest for an upholstered seat, which is disposed on an armrest carrier, which can be fixed to the seat or seat carrier with a substantially horizontally running fastening bracket, and which has a substantially vertically extending projection, with this armrest being provided with an adjustment mechanism as claimed in any one of claims 1 to 9, characterised in that the adjustment cartridge (20; 25) is inserted in the at least partially tubularly formed projection (17.1), the base of which adjustment cartridge (20; 25) is fixedly connected by means of a fastening bolt (19) with the bottom part (17), and into which an adjustment blade (30) is inserted with the release (40) of the latching mechanism, with the upper end of which the armrest (11) is fixedly connected.
12. Armrest as claimed in Claim 11, characterised in that the release button (41) disposed at the upper end of the release bar (42) of the latching mechanism is guided out of the bottom part (12) of the armrest (11).
13. Armrest as claimed in Claim 11 or 12, characterised in that the armrest (11) is provided with means for displacement in the up-down direction corresponding to the longitudinal direction of the armrest (12), with a latching mechanism preferably being provided to facilitate gradual displacement.
14. Armrest as claimed in Claim 13, characterised in that a plate (51) is inserted in the bottom part (12) of the armrest (11) as a latching mechanism, which plate (51) is connected by means of screws (54) guided through elongate holes (12.1) with the attachment plate (31) of the adjustment blade (30) and which slides on a latching rib (55), with latching means in the form of a spherical latching cap (52) and of latching points (56) being provided between the plate (51) and the latchig rib (55), with the plate (51) preferably being guided such that it is under elastic bias.
15. Armrest as claimed in any one of Claims 11 to 14, characterised in that the armrest (11) is provided with means for displacement in the widthways direction, with a latching mechanism preferably being provided to facilitate gradual displacement.
16. Armrest as claimed in Claim 15, characterised in that a receptacle sleeve adapter (60) is provided as means for displacing the armrest (12) in the widthways direction between the attachment plate (31) of the adjustment blade (30) and the bottom part (12) of the armrest (11), in which receptacle sleeve adapter a transverse guide insert (61) is inserted, which has a latching bolt (63) with an elastic support which interacts with a latching groove (64) disposed corresponding thereto on the inner side of the bottom of the receptacle sleeve adapter (60).

Images