EP1269893B1 - Seating and/or lying furniture with leg-rest - Google Patents

Abstract

The chair has a foot rest (8) mounted on swiveling side supports (10). This can be disconnected from the swivel system and moved to a position where it supports the legs at knee level rather than the feet.

Description

The invention relates to a sitting and / or reclining furniture with a Seat part as well as with a leg support, the one leg rest and a stroke-pivoting device comprises, by means of derer the legrest can be raised and lowered relative to the seat part and thereby positively controlled by a horizontal and transverse to the viewing direction of the user extending pivot axis is pivotable.

In the form of armchairs, for example, such furniture is more practical Intuition known. By means of a lever mechanism leaves while the leg support in different height and at the same time in different pan or tilt positions convict. The movement of the leg rest is often coupled with an adjustment of the seat part or - if available - with an adjustment of the Backrest of the furniture. This is to ensure that the legs of the user stored on the leg rest an ergonomically convenient and comfortable location opposite take the rest of the body of the user. The kinematics the previously known leg rest is structurally specified and does not allow special needs of the furniture user to take into account.

The previously known furniture to suit individual needs To make their users more flexible has changed the present invention aims.

As shown in claim 1, this object is achieved according to the invention solved that on a sitting and / or lying furniture the type specified the leg rest of the Hub swivel device decouples around a horizontal and transverse to the line of sight of the user extending pivot axis from the positively controlled set pivot position in at least one of them different pivot position is pivotable and can be fixed in this pivot position. The forcibly adjusted by means of the lifting and pivoting device Pivot position of the leg rest can therefore be as needed change. The legrest can be as required be transferred to a position that best suits the needs the user is tuned and the accordingly offers maximum ease of use. The hub swivel device only provides one in these cases Coarse adjustment of the leg rest.

In a preferred embodiment of the invention, the leg rest decoupled from the hub pivoting device in at least a pivoting position for knee support pivoting and in This pivotal position can be fixed (claim 2). In In this case, the inventive seat and / or allowed Reclining his user in addition to taking a comfortable Resting also taking a kneeling position, like her For example, selected as ergonomically favorable working posture can be.

From a constructive point of view, advantageous measures to ensure an individual adjustability of leg support Furniture according to the invention are in the claims. 3 and 4 described.

The Erfindungsbauart according to claim 5 is distinguished by a wide variation in the possibilities to adjust the leg rest. Already due the decoupled from the hub pivoting pivoting of the leg support wearer can for the leg rest positions be chosen, the special needs of the furniture user Take into account. The resulting is extended Range of settings still through the Circumstance that also the position of the legrest opposite the leg support is variable.

Of particular practical importance is the according to claim 6 provided slidability of the legrest opposite the leg support.

For fixing the leg rest in the respective displacement position offer different possibilities according to the invention. For the purposes of the invention is preferred according to claim 7 a locking device by means of a Controlled control device and thus automatically operated, in particular is solvable.

An automatic release of the leg rest in its displacement position securing connection with the leg rest support may be required, for example, when the leg rest in their positively controlled stroke pivoting movement with Objects or facilities in the vicinity of the invention Sitting and / or lying furniture collides. Is in In such cases, the displacement protection of the leg rest solved, then on the one hand a collision-related Damage to the leg rest avoided. At the same time by loosening the connection between leg rest and leg rest support blocking the positively controlled lifting pivoting movement the leg rest can be prevented. After this Loosening of said connection may be the legrest rather automatically avoid the obstacle and thus the positively controlled Continue stroke swivel movement.

Technically simple and functionally reliable design possibilities for automatically releasing the connection of leg rest and leg rest support go from the claims 8 and 9 show. This ensures the Federkraftbeaufschlagung the braking member according to claim 9, that the Locking or braking device for fixing the leg rest on the leg rest support after loosening again is automatically returned to its functional position.

Claim 10 describes a type of the invention Sitting and / or lying furniture, in case of need for the greatest possible ease of use also by the design and arrangement of the Hub-swivel device bill worn. After the described boom assembly relatively to the viewing direction of the furniture user builds small and extends between the legs of the user, there is an easy possibility for this when taking a sitting or lying position and at the same time lifted leg rest to the floor without being affected by the hub-pivoting device would be hampered.

Fig. 1 bis 5:

eine Sitzliege umfassend einen Sitzteil, eine Rückenlehne sowie eine Beinabstützung mit einer ersten Abfolge von Stellungen der Beinabstützung;

Fig. 6 bis 8:

die Sitzliege nach den Fig. 1 bis 5 mit einer zweiten Abfolge von Stellungen der Beinabstützung;

Fig. 9, 10:

eine Auslegeranordnung als Teil der Beinabstützung nach den Fig. 1 bis 8;

Fig. 11:

einen Beinauflagenträger ebenfalls als Teil der Beinabstützung nach den Fig. 1 bis 8;

Fig. 12:

die Auslegeranordnung nach den Fig. 9, 10 mit dem Beinauflagenträger nach Fig. 11;

Fig. 13, 14:

eine dem Beinauflagenträger nach den Fig. 11, 12 zugeordnete Beinauflage mit gesteuerter Arretierungsvorrichtung;

Fig. 15:

die Arretierungsvorrichtung nach den Fig. 13 und 14;

Fig. 16:

die Beinabstützung nach den Fig. 1 bis 8, bestehend aus den Bauteilen nach den Fig. 9 bis 15;

Fig. 17:

die Sitzliege nach Fig. 1 in der Draufsicht von oben und

Fig. 18:

eine Darstellung entsprechend Fig. 1 mit gegenüber Fig. 1 verschobener Beinauflage.

The invention will be explained in more detail with reference to schematic representations of an embodiment. Show it:

Fig. 1 to 5:

a seat recliner comprising a seat portion, a backrest and a leg support having a first sequence of leg support positions;

6 to 8:

the seat according to Figures 1 to 5 with a second sequence of positions of the leg support.

Fig. 9, 10:

a boom assembly as part of the leg support of Figures 1 to 8;

Fig. 11:

a leg support also as part of the leg support of Figures 1 to 8;

Fig. 12:

the boom assembly of Figures 9, 10 with the leg rest support of Fig. 11;

Fig. 13, 14:

a leg support associated with the leg support of Figures 11, 12 having a controlled detent device;

Fig. 15:

the locking device of FIGS. 13 and 14;

Fig. 16:

the leg support according to FIGS. 1 to 8, consisting of the components according to FIGS. 9 to 15;

Fig. 17:

the seat according to Fig. 1 in plan view from above and

Fig. 18:

a representation corresponding to FIG. 1 with respect to FIG. 1 shifted leg rest.

1 to 8 and 17, 18 includes a seat and reclining furniture in the form of a seat 1 a seat part 2 , which is pivotally mounted on a base 3 in the direction of a double arrow 4 . Backward is hinged to the seat part 2, a backrest 5 . The pivoting mobility of the backrest 5 relative to the seat part 2 is illustrated by a double arrow 6 . At the side lying in the direction of the user, the seat part 2 supports a leg support 7 . This comprises in addition to a leg rest 8 and a later to be described in detail and in FIGS. 1 to 8 arranged leg support support 32, a boom assembly 10 , via which the unit of leg rest 8 and leg support 32 is connected to the seat part 2. The boom assembly 10 extends in the direction of the user of the seat 1 between his legs (Fig. 17).

A selection of positions in which the leg rest 8 of the Seat 1 can be transferred, is the figures 1 to 8 and 18. The sequence according to FIGS. 1 to 5 relates the case that the leg rest 8 from a horizontal Position (Fig. 1) in the lower end position (Fig. 5) is moved. The running of the leg rest 8 while doing so combined stroke swinging motion is the result of Forced control of the leg rest 8 by the boom assembly 10, which is therefore a hub-pivoting device is. In Fig. 1, the leg rest 8 in a position shown in which they the user of the seat 1 the intake of a seated rest position allows. In a corresponding position is the legrest. 8 in FIG. 18. However, the leg rest 8 according to FIG. 18 pushed closer to the seat part 2 as in Fig. 1st

The sequence of positions of the leg rest 8 shown in FIGS . 6 to 8 is based on the conditions according to FIG. 2 and ends with a position in which the leg rest 8 can be used for knee support. This functional position of the leg rest 8 results in this case both due to their forced control by the boom assembly 10 and by decoupled from this forced control setting.

The constructive means, which in Figs. 1 to 8 and 18 illustrate kinematics of the leg support 7 or allow, are shown in detail in FIGS. 9 to 16.

According to FIG. 9 , the boom arrangement 10 comprises a double-walled rocker 11, a drive link 12 and a control link 13. The rocker 11 is articulated to the drive link 12 and the control link 13 via pivot axes 14, 15 . The drive link 12 is the rocker 11 opposite provided with a bearing sleeve 16 . Between the pivot axis 14 and the bearing sleeve 16 engages on the drive link 12 to a gas spring 17 , which is thereby mounted articulated on the drive link 12. At its opposite end to the drive arm 12, the gas spring 17 is provided with a bearing eye 18th Instead of the gas spring 17, for example, a hydraulic cylinder or an electromechanical linear drive can be used.

The control link 13 has a fork-like shape and is penetrated by the gas spring 17 in the region of the fork. The fork legs end in bearing eyes 19, 20. The drive link 12 is pivotally mounted via the bearing sleeve 16, the control link 13 via the bearing lugs 19, 20 and the gas spring 17 via the bearing eye 18 on the seat part 2 of the seat 1.

The rocker 11 is fixedly connected at its end remote from the control link 13 with a pivot axis 21 . About the pivot axis 21 pivotally seated on this, a swing body 22. By this are firmly connected at both longitudinal ends of the pivot axis 21 of cylindrical half-shells of a barrier locking device, of which in Fig. 9 a, namely, the half-shell 23, on the side facing the observer's side can be seen.

Fig. 10 gives an insight into the intermediate space between the walls of the double rocker arm 11. In this intermediate space is housed, therefore, a thrust rod 24 which comprises a rear connecting rod 25 and a thereto hinged by means of a pivot axis 26 front push rod 27. At its end remote from the pivot axis 26 , the front push rod 27 is pivotally connected at a radial distance from the pivot axis 21 with the pivot body 22. On the pivot axis 26 sits a guide roller 28 which is guided between guide rails 29, 30 and rolls on a guide track 31 on the guide rail 29. The rear push rod 25 is articulated at its end remote from the pivot axis 26 via a pivot axis with a radial distance from the pivot axis 14 to the drive arm 12.

Shown in Fig. 11 is the leg support support 32. This is provided on its longitudinal sides with parallel guides 33, 34 . Roller tracks 35, 36 are formed on the parallel guides 33, 34. On the outer side of legs 37, 38 , the leg rest support 32 is provided with bearing rollers, of which the bearing roller 39 on the leg 37 is shown in FIG. On their sides facing each other, the legs 37, 38 are rotatably provided with a respective half shell of the aforementioned locking detent device. For the sake of clarity, only the half shell 40 is shown in FIG. 11, which is attached to the inside of the leg 37 of the leg support 32 and which is intended to cooperate with the half shell 23 on the pivot body 22 (FIG. 9). The half-shell 40 is penetrated by a bearing hole 41 bearing openings can also be found on the legs 37, 38 of the leg rest support 32. One of these, namely the bearing hole 42 on the leg 38 is shown in Fig. Can be seen. 11

The leg rest support 32 is to be mounted on the boom assembly 10 ( Figure 12 ). In the mounting position while the bearing openings on the legs 37, 38 of the leg support support 32, inter alia, the bearing opening 42, interspersed by the rotatably connected to the rocker 11 pivot axis 21. This lies in Fig. 12 hidden behind the visible bearing roller 39. About the half-shell pair 23, 40 on one side of the pivoting body 22 and on the corresponding half-shell pair on the opposite side of the pivot body 22 is carried out a support of the projecting from the pivot axis 21 Beinauflagenträgers 32 in the direction of gravity (arrow 43 in Fig. 12). At the same time, the pair of half-shells 23, 40 and the second pair of half-shells attached to the opposite side of the swivel body 22 allow the leg-rest support 32 to pivot against the direction of gravity (arrow 44 in FIG. 12). In this case, the leg rest support 32 can be locked in different pivot positions. In all these detent positions of the leg support support 32 is supported against pivoting in the direction of gravity. The this enabling locking-latching device is designed in a conventional manner. As is known, for example, from pivotal connections to bed slatted frames, swiveling leg rest support 32 from a previously set pivot position into the pivoting end position in the direction of arrow 43 first requires pivoting of leg rest support 32 in the direction of arrow 44 into a position. in which the locking detent device is opened and then allows the desired pivoting of the leg support support 32 in the opposite direction.

To store on the leg rest support 32 is the leg rest 8, as shown in FIGS . 13 and 14 in the view from opposite directions. The leg rest 8 comprises a support cushion 46 and a padding substructure in the form of a support carriage 47. The latter has two guide rails 48, 49 . These are equipped on their sides facing each other with rollers 50, 51 . On the guide rail 48 of the roller 50 adjacent a braking device 52 is arranged, which serves as a locking device for fixing the leg rest 8 on the leg support support 32. For their actuation, a control device 53 is provided. The brake device 52 and its control device 53 are shown in FIG. 15 in isolation.

Accordingly, the brake device 52 essentially comprises a brake member in the form of a brake shoe 54 and an angled pivot lever 55 with a pivot axis 56. The pivot lever 55 carries at one end the brake shoes 54. Its pivot axis 56 serves as a rotation axis for the roller 50. At a distance of the pivot axis 56 engages the pivot lever 55 to a brake spring 57 .

The control device 53 comprises a button in the form of a follower roller 58 and an actuating linkage 59, which is supported on the one hand on the follower roller 58 and on the other hand rotatably mounted by means of a pivot axis 60 on the pivot lever 55 at a distance from the pivot axis 56.

Furthermore, the control device 53 comprises a manual operating lever 61 and a further actuating unit 62. The latter consists of a rotatably connected to the manual lever 61 shaft 63 and a pivot lever 64. The shaft 63 is rotatable about a pivot axis 65 ; the pivot lever 64 is acted on the one hand at a distance from the pivot axis 65 via the shaft 63 and on the other hand firmly connected to the pivot lever 55 with brake shoes 54. The application of the pivot lever 64 by the shaft 63 via a cam roller 68 which is mounted eccentrically on the shaft 63.

As is apparent from FIGS. 13 and 14, the manual operation lever 61 and the shaft 63 are rotatably supported about the pivot axis 65 on the support carriage 47 of the leg rest 8. Also rotatably connected to the support carriage 47 is the pivot lever 55, whose pivot axis 56 passes through a tab 66 of the support carriage 47. Finally, the follower roller 58 is rotatably mounted on the guide rail 48 with an eccentric axis of rotation.

In the position of use, the leg rest 8 is placed on the leg rest support 32. The rollers 50, 51 of the leg rest 8 rest on the roller tracks 35, 36 on the leg rest support 32. A corresponding roller bearing of the leg rest 8 on the leg rest support 32 results by means of the bearing roller 39 and the second bearing roller (not recognizable in FIG Leg support 32. About the parallel guides 33, 34, the leg rest 8 is guided on the leg support support 32 in the direction of a double arrow 67 ( Fig. 16 ). A free mobility in this direction is prevented by the brake device 52, the brake shoes 54 rests under the action of the brake spring 57 on the roller conveyor 35 of the leg support support 32.

Now, starting from the ratios of FIG. 1, the Gas spring 17 by pressing a dedicated hand lever ventilated, so can the leg support 7 by exercise a gravitational pressure on the leg rest 8 are lowered from the raised position. at appropriate choice of the force exerted by the gas spring 17 drag can the lowering of the leg rest 8 with low Accomplish effort. So can the required For example, force of the on the seat part 2 of Seating 1 seated user with legs applied become. The leg rest 8 leads at the same time with its lowering movement a positively controlled pivoting movement.

This pivotal movement results from the configuration of a gear forming boom assembly 10. Thus, the pivotal movement of the drive link 12 is converted via the push rod 24 in a pivoting movement of the pivot body 22 about the pivot axis 21 mitverschwenkt with the swivel body 22 with this with respect to the pivot axis 21 rotatably Connected leg support 32 and with this the leg rest support 32 mounted on the leg rest 8. Thus, the leg rest 8 passes from the initial position shown in FIG. 1 in the position shown in FIG. 2. In this case, the follower roller 58 hits on the ground. Continued loading of the leg rest 8 in the lowering direction has the consequence that the follower roller 58 pivots about the first actuating linkage 59, the pivot lever 55 about the pivot axis 56 in Fig. 15 in the clockwise direction. As a result, the brake shoe 54 lifts against the action of the brake spring 57 from the previously loaded roller conveyor 35 on the leg rest support 32 from. The brake device 52 is thereby opened. With continued pivotal movement of the leg rest 8 in the positions shown in FIGS. 3 to 5, the brake device 52 remains open and the leg rest 8 can move with its support carriage 47 along the leg support support 32 and thereby shrink from the ground. In this way, blocking the positively controlled movement of the leg rest 8 is automatically prevented. At the same time damage to the leg rest 8, which could be associated with their impact on the ground forming an obstacle, avoided. In its lower end position, the leg rest 8 in Fig. 5 is shown. Starting from this position, it is necessary to transfer the leg rest 8 into a position of use only an actuation of the gas spring 17. The processes described in FIGS. 1 to 5 then take place in the reverse sense. As soon as the follower roller 58 clears the ground during the lifting movement of the leg rest 8, the brake spring 57 automatically causes the brake shoe 54 to abut against the associated roller conveyor 35 and thus automatically activate the brake device 52. The leg rest 8 then moves back in the direction of the Double arrow 67 immovably locked to the leg rest support 32.

If the leg support 7 is to be used as a knee support, so the leg rest 8 is initially in the position according to Fig. 6 to move. The pivot position shown there Leg rest 8 is supported by boom assembly 10, i. positively controlled, adjusted. In this position of the leg rest 8, the brake device 52 is still effective. The operator can now the leg rest 8 at its front Capture the end and start from the force-controlled default Swivel position of the positive control decoupled in Swing up the position shown in FIG. 7. By means of the above described locking device is the leg rest 8 automatically locked in this position. if necessary it is still possible to adjust the leg rest 8 in the direction of the double arrow 67 in Fig. 7. For this purpose is the user of the manual operation lever 61 in FIG. 15 to apply counterclockwise. About the pivot lever 64 is then the pivot lever 55 while lifting the Brake shoe 54 of the roller conveyor 35 and under biasing the brake spring 57 pivoted about the pivot axis 56. The Braking device 52 is then opened and the leg rest 8th can be compared to the leg rest support 32 in the desired Move position. With releasing the manual control lever 61 takes the brake shoes 54 under the effect the previously preloaded brake spring 57 again its functional position on the roller conveyor 35 and thereby fixed the leg rest 8 on the leg rest support 32. Accordingly is to proceed when the leg rest 8 from her Position of FIG. 1 in the position shown in FIG. 18 or vice versa should be moved.

As shown in FIG. 8, the seat part 2 of the seat 1 can be relative pivoted to the base 3 in different positions become. With the pivoting movement of the seat part 2 is accompanied by a corresponding pivoting movement of the entire Leg support 7. Relative to the seat part 2 pivotable is the backrest 5. Fig. 8 shows the seat 1 with a couch Position of backrest 5, seat part 2 and leg support 7, by the user for taking an ergonomic favorable kneeling working posture can be used can.

Claims (10)

1. Furniture for sitting and/or lying having a seat part (2) and having a leg support (7) which comprises a leg rest (8) and a lifting and pivoting apparatus (10), by means of which the leg rest (8) can be raised and lowered relative to the seat part (2) and, in the process, can be pivoted under positive control about a pivot axis (21) running horizontally and transversely with respect to the viewing direction of the user, characterized in that the leg rest (8) can be pivoted in a manner decoupled from the lifting and pivoting apparatus (10) about a pivot axis (21) running horizontally and transversely with respect to the viewing direction of the user from the pivoted position set under positive control into a at least one pivoted position different therefrom and can be fixed in this pivoted position.
2. Furniture for sitting and/or lying according to Claim 1, characterized in that the leg rest (8) can be pivoted in a manner decoupled from the lifting and pivoting apparatus (10) into at least one pivoted position for knee support and can be fixed in this pivoted position.
3. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the pivot axis (21) of the positively controlled pivoting movement of the leg rest (8) coincides with the pivot axis (21) of the pivoting movement of the leg rest (8) decoupled from the lifting and pivoting apparatus (10).
4. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that, by means of a releasable blocking and latching apparatus (23, 40), the leg rest (8) can be fixed in at least one pivoted position different from the pivoted position set under positive control.
5. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the leg rest (8) is connected to the lifting and pivoting apparatus (10) by a leg rest support (32) that can be pivoted in a manner decoupled from the lifting and pivoting apparatus (10), and is mounted on the leg rest support (32) such that it can be adjusted relative to the latter.
6. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the leg rest (8) is guided on the leg rest support (32) such that it can be displaced relative to the latter and, by means of a releasable locking apparatus (52), can be fixed in different displaced positions.
7. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the locking apparatus (52) for fixing the leg rest (8) to the leg rest support (32) can be actuated under control, in particular released, by means of a control device (53).
8. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the control device (53) for the controlled actuation of the locking apparatus (52) for fixing the leg rest (8) to the leg rest support (32) comprises a caliper (58) which projects with respect to the leg rest (8) in the radial direction of the pivot axis (21) of the positively controlled pivoting movement of the leg rest (8) and is connected via an actuating apparatus to the locking apparatus (52) of the leg rest (8), the caliper (58) controlling the actuating apparatus in a sense that releases the locking apparatus (52) of the leg rest (8) if an obstacle is encountered.
9. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the locking apparatus (52) provided for fixing the leg rest (8) to the leg rest support (32) is a releasable braking apparatus having a spring-loaded braking element (54), via which the leg rest (8) can be fixed to the leg rest support (32) and which can be moved from a braking into a releasing position, counter to the action of the applied spring force, by means of an actuating linkage (59) that can be controlled by a caliper (58).
10. Furniture for sitting and/or lying according to one of the preceding claims, characterized in that the lifting and pivoting apparatus (10) is constructed as an outrigger arrangement, via which the leg rest (8) and/or the leg rest support (32) is connected to the seat part (2) and which, in the viewing direction of the user, extends between his legs.

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