BE1019628A3 - SEATING FURNITURE WITH ASSISTANCE. - Google Patents

Abstract

The invention relates to seating furniture with a stand-up aid, consisting of a stand frame (1) and a seating furniture frame (2) forming the seating furniture, the seating furniture frame (2) being connected to the stand frame (1) via articulated levers which can be pivoted by means of at least one motorized actuator , so that the seating furniture frame can be adjusted from a basic position in relation to the bar frame into a stand-up position.

Description

Seating furniture with stand-up aid.

The invention relates to a chair with a stand-up, consisting of a stand frame and. a seating furniture forming the seating frame with side cheeks, backrest and optionally, a footrest, wherein the seating furniture frame is connected via articulated lever to the stand frame, which are pivotable by means of at least one motorized actuator, so that the Sitzmöbëlgestell is adjustable from a basic position relative to the stand frame in a stand-up auxiliary position ,

From DE 199 02 467 B4 a chair generic type is known. In this case, rotary traverses are arranged below the seat part, which can be rotated by means of electromotive actuators to transfer by means of a lever mechanism the chair from a basic position to a standing-up auxiliary position. It is also possible due to a further drive to convert such a seat in a lying position, a television position or a cardiovascular position.

To ensure the stability of the chair, especially in the stand-up position, it is necessary to lower the base of the chair, then the Sit'zmöbel in the

To transfer the standing up assistance position ...........

A similar design is known from DE 199 45 118 B4. Although these known embodiments have been proven in practice, a disadvantage is seen in that the known embodiments due to the articulated connection to the, base frame have a significant game, which is considered in use as disadvantageous. It is also possible to operate the known seating by manually lifting the seat part, which is also undesirable. Based on this prior art, the present invention seeks to provide a chair generic type, which is extremely robust, in a simple manner allows a large adjustment height in the standing position and which overall enriches the state of the art.

To solve this problem, it is proposed that approximately centrally of the longitudinal extent of the stand frame fixed on both sides in the region of the longitudinal sides of a vertical from the upright stand, directed away from the supporting plane of the stand frame projecting support or angeorönet 'is that at each support on her the Stand frame facing away from each end a rocker lever is articulated, the joint axes are directed coaxially to each other and transverse to the longitudinal extent of the stand frame, wherein a first end of each rocker lever is directed to the rear end of the stand frame and ends below the rear end of the seat frame, said first end respectively each hinged to a side of the seat frame projecting lever, said hinge axes are directed parallel to the hinge axes of the rocker lever and coaxial with each other, wherein a second end of each rocker lever is directed to the front end of the rack and below d it front or middle portion of the seating frame ends, the. two second ends are connected by a part in particular a tube, which has a control lever to which a first component of a first actuator is articulated, the second component is hinged to the stand frame preferably in the rear end of the Standgestells', so that the rocker arm through the Actuator is rotatable about the support-side hinge points, and that at the front end portion of the stand frame toggle joints are hinged to a first end whose second ends are fixed to a crossbar which is rotatably supported at the front end portion of the seat frame, wherein in the basic position of the chair the first End of the rocker arm approximated the base frame and the toggle lever is pivoted and in the

On st'ehhilf position the first end of the rocker lever moved away from the stand frame and the toggle lever is stretched.

In the inventive construction is approximately centrally disposed between the front end of the rack, which is formed by the chair front edge and the rear end of the rack, which is arranged approximately in the region of the backrest of the chair. is fixed on both sides of the rack each one projecting vertically above support. This support is stably connected to the stand frame. This support forms at its end a pivot point for rocker lever. This rocker arm each has a first end. which is directed to the rear end of the rack and ends below the rear end of the seating frame. This end is articulated respectively to a lever protruding on the underside of the seat frame The second ends of the rocker levers are directed towards the front end of the stand frame and terminate substantially below the front end portion of the seat frame. These two ends are connected by a rigid, such as a tube with each other. , At ... this ..stiff or on the tube, a lever is attached, which serves as an attack for the first end of a first actuator, the second end of the

Stand frame is preferably articulated in the rear end of the stand frame. This makes it possible to rotate the rocker lever by the actuator "around the support-side hinge point." The actuator is designed in particular as a pulling drive, ie in the basic position of the seat a linear plunger of the actuator is extended When the auxiliary position is reached, the plunger is pulled in. The actuator thus pulls on the control lever, which rotates the rocker arm about its pivot point on the support, thereby raising at least the rear end of the seat frame towards the home position In addition, at the front end portion of the stand frame, toggle links are hinged to a first end whose second ends are fixed to a crossbar rotatably supported at the front end portion of the seat frame is, and yourself extends transversely to the Längsstrebung of the seating frame. When sitting in the basic position seating the toggle lever are pivoted. If the seating, in particular the seat frame, is moved into the standing-up auxiliary position, the toggle levers open and move into an extended position, so that the front end of the seat frame is likewise raised, which is advantageous for the standing-up auxiliary position. In opposite direction actuation of the actuator, the parts move from the upright auxiliary position in 'the basic position back.

In order to provide a further adjustment, it is provided that the rotatable cross member, on which the second ends of the toggle lever are fixed, has a control lever to which a second actuator is articulated, which is hinged at its other end to the seat frame in the rear area, wherein by means of the second actuator, the toggle lever from the pivoted basic position in a pivoted S.trecklage adjustable. are, so that upon exclusive actuation of the second actuator, the seat frame on the .vorderen end portion i is swung up and the rear end portion remains in the home position.

Consequently, the traverse on a lever on which a second actuator engages, which is hinged at its other end to the seating frame in the rear area. Regardless of the position of the first actuator can be carried out by means of the second actuator, an extension of the toggle lever from the pivoted-home position in the pivoted extended position, so that in exclusive

Actuation of the second actuator and located in the basic position first actuator the seating furniture frame is pivoted up at the front end, while the rear end remains in the normal position.

It is also possible to move the first actuator in the sense of actuating the stand-up auxiliary position and at the same time to move the second actuator to achieve the pivoted-extended position of the toggle lever. As a result, a position is set in which the seating furniture frame is raised overall relative to the base frame.

In order to improve the stability of the chair, especially when this is transferred to the standing-up auxiliary position, it is provided that the first end of the toggle is extended beyond the articulation point on the base frame and each forms a support leg, which has pivoted with knee levers distance from the riot plane of the chair and at fully or almost fully extended toggle rests on the uprising level.

This ensures that, when the first toggle lever are fully or almost completely stretched, supported by the extension formed by the lever of the toggle lever support foot, on the footprint,. so ..a .. dumping the

Seat is prevented forward ', when the user uses the stand-up auxiliary position and leaves the chair forward.

Although the arrangement of the. Support in the middle area of the stand frame achieved in any case, that the risk of tipping the chair. diminished is..t when ,, this is transferred to the standing-up auxiliary position, since the seating furniture with its front edge, even in the stand-up position, or only slightly protrudes beyond the stand frame. Nevertheless, an additional security is formed by the additional support leg.

Furthermore, it is provided that the stretching path of the toggle lever is limited by a stop acting between the levers of the toggle lever. For example, on one of the two levers of the

Knee lever a stop be provided, which rests upon extension of the toggle lever to the other lever,. so that the way of the toggle is limited thereby. An additional comfort advantage is achieved in that the backrest of the chair is pivotally mounted on the seating frame and on the seat frame, a third actuator is arranged, which is articulated at the lower end of the backrest and by means of which the backrest is tilt adjustable.

By means of the third actuator, the backrest can be tilted, regardless of the other orientation of the chair and regardless of the operation of the first and second actuator.

Furthermore, it can be provided to improve comfort, that the backrest is coupled via a pull-push rod with a held at the front end of the seat frame off and swivel footrest, so that is pivoted out of the sitting position in - a rest position displaced backrest, the footrest and is pivoted in the backward displacement of the backrest in the sitting position, or the footrest is actuated with a fourth actuator.

Here, the backrest is coupled via a tension and pressure-stable rod with a held at the front end of the seat frame off and swivel footrest. When tilting the backrest from the basic position in a flat inclined position is achieved by the push rod Ausschwenkbewegung the pivoting footrest. When moving back the rod pulls the footrest back into the pivoted position. Alternatively, the operation of the. Footrest also done by the fourth actuator.

Preferably, it is also provided that the stand frame is formed approximately rectangular and consists of mutually parallel longitudinal struts and this end and center connecting cross struts, wherein the supports are attached to the central transverse strut near the longitudinal struts.

As a result, a cost-stable formation of the stand frame is achieved.

In addition, it can preferably be provided that the supports obliquely forward to the front end of the

Stand frame inclined to be directed, the angle formed between the base frame and supports 50 ° to 65 °. \

As a result, the movement is promoted in the operation of the chair.

In particular, it is preferably provided that 'each rocker lever is L-shaped and is hinged in the butt region of its two legs on the support end, wherein in the basic position both legs of the rocker lever are directed to the contact surface of the chair.

By differently long training of the legs of the L-shaped rocker arm, the travel can be changed and thus, if necessary, a greater adjustment height can be realized to raise the seat frame in the standing-up auxiliary position.

In addition, it is preferably provided that the first actuator with its second component via a

Joint flap on the stand frame, in particular on a rear cross member of the rack, · is hinged. This ensures that when the lowering of the seat frame from the standing-up auxiliary position to the home position an object enters the space between the base frame and chair back, further pivoting is prevented under power of the actuator, as by. the joint flap allows a force diversion, which prevents a crushing of components between the chair parts.

Overall, the invention provides an extremely robust seating with stand-up help available, which allows a large adjustment height in the stand-up position and offers multiple comfort options. Also, a tilt protection of the seat in the stand-up position is realized in a simple manner.

A schematic embodiment of the invention is illustrated in the drawing and described in more detail below.

It shows:

Figure 1 essential components of itzmöbelgestells and the rack together with functional elements seen in oblique view from above;

Figure 2 is an inventive seating in the basic position in side view partially cut ;.

Figure 3A shows the seating in a front raised comfort position, the gear members are drawn almost transparent; ,

Figure 3B is likewise seen in a view analogous to Figure 2;

Figure 4 seen the seating in a rest position in section analogous to Figure 2;

FIG. 5A shows the seating furniture in a standing-up auxiliary position analogous to FIG. 3A;

Figure 5B also seen in section similar to Figure 3B;

FIG. 6A shows the seating in a standing-up auxiliary position that is even further raised in comparison with FIG. 5A;

Figure 6B is also seen in the view of Figure 5B;

Figure 7A, the seating in a 1 other

Comfort position as seen in Figure 3A;

FIG. 7B likewise the same as seen in FIG. 3B.

As can be seen particularly clearly in FIG. 1, the seating consists of a base frame 1 and a seating frame 2 forming the seating.

The base frame 1 is a frame rectangular basic shape with two mutually parallel longitudinal bars 3 and end transverse bars -4 and an additional central spar 5. The seating frame 2 consists of a fitting 6 with additional back fitting 7, 8, wherein the fitting part 6 only in the rear area ,, but not shown in the front of the drawing. Furthermore, the seat furniture frame consists of the elements 9 and elements 10,11, stiffeners 12 and a footrest element 13. The seat part of the chair is attached to the elements 10,11. The side cheeks of the seat furniture part extend laterally outside next to the fitting part 6, wherein the fitting part 6 is screwed to the side walls of the seat furniture. In addition, the side cheeks are based on the parts 9, which are screwed on the underside of the side cheeks. On the components 7, the Rückenlehnteil is secured in a suitable manner. Approximately in the middle of the longitudinal extension of the stand frame 1 are on both sides approximately centrally in the region of the longitudinal sides of each vertical from the stand frame 1, facing away from the support plane of the stand frame 1, protruding supports 14 fixed. With their foot area the supports .14 are fixed to the cross strut 5 of the stand frame. At the free end of each prop is. a rocker lever 15 hinged. As with the other joints, which are shown in the drawing · and / or further described, the joint axes of the hinge points 16 are parallel to the cross struts of the stand frame 1. A first end 17 of each rocker arm 15 is directed to the rear end of the pole 1 and hinged below the rear end of the seat frame 2 at a lower side of this, projecting lever 18 at the articulation point 19. A second end 20 of each rocker arm 15 is directed towards the front end of the stand frame 1 and is connected below the front or middle portion of the seat frame 2 at its end to a stiffener or pipe 21 connecting the ends together.

The tube 21 in turn has an adjusting lever 22 to which the first end of a first actuator 23 is articulated, the second component 24 is articulated on the base frame 1, in the rear end of the stand frame 1, namely at the

Anlenkstelle 25. In Figure 1, this arrangement is in the normal position, which corresponds to the position of the chair in the view of Figure 2. The plunger (24) of the first actuator 23 is in the home position in an extended position, as shown in Figure 1. Upon actuation of the actuator 23 moves. this in the direction of the articulation point 25, that is, the plunger 24 is pulled into the actuator 23, so that the element 23 moves in the drawing 'to the right. The rocker arm 15 is rotatable about the support-side articulation points 16 by this actuator 23.

In addition, a toggle lever pair 26 is arranged right and left at the front end portion of the stand frame 1. Each toggle lever is articulated end to end with a first arm on the base frame, at the articulation point 27, while the second ends of the other arm of the toggle lever are fixed to a cross member 28 at the front end portion of the seat frame 2, in particular to the components 9 of the seat frame 2 order its longitudinal axis is rotatably held.

As can readily be seen in FIG. 1, a stop 29 is provided on the frame-side lever of the toggle lever, which stop rests against a stop part of the stand frame 1 in the basic position. At the joint point of the toggle lever 26 superior end of the other lever is also a stop 30 is formed, which abuts at almost extended toggle lever on the other lever and limits the way. Upon actuation of the first actuator 23 to transfer the seating from 'the home position' into the standing up assist position, an uplift of the toggle will occur due to the movement of the 'seat frame, particularly the components 9 of the seat frame, thus transferring the toggle to the partially stretched position .Lage causes, as shown for example in Figure 5 and Figure 6.

On the rotatable cross member 21, on which the second ends of the toggle lever 26 are fixed, a control lever 31 is attached to which one end of a second actuator 32 is articulated. The actuator 32 is hinged at its other end to the seating frame in the rear area, namely on the tab 33. In the figure 1, this actuator is in the normal position. If this actuator is operated, the lever 31 in the drawing opposite

Turned clockwise, whereby the toggle 26 are opened and a comfort position is adjustable, as illustrated for example in Figure 3. The first end 34 of the bell crank 26 is over the

Anlenkstelle 27 extended. This extension forms a support foot 35, which has 26 pivoted knee levers 26 distance from the riot plane of the chair, as shown for example in Figure 2, or fully or almost completely stretched toggle is supported on the support level, as can be seen in particular in Figure 5 to 7 ,

As already stated above, the plug-in path of the toggle lever 26 is limited by stops 30.

Finally, as can be seen, for example, in FIG. 3, the backrest 36 of the seat is pivotally mounted on the seat frame 2. To actuate the seat frame 2 is a third

Actuator 37 is arranged, which acts on a fitting at the lower end of the backrest 36 and is articulated and by means of which the backrest is tilt-adjustable. The other end of the actuator 37 may for example be attached to a tab 38, which is a fixed part of the stiffness 12. In addition, the backrest can still be coupled via a tension- and pressure-stable rod with the front end of the seat frame 2 held off and swivel footrest 13 so that it can be extended by displacement of the backrest 36 or the footrest 13 can übe operated a fourth actuator, as shown in the figures.

As can be seen from the drawing figures, the supports 14 are arranged so that their free end is directed obliquely forward to the front end of the stand frame 1 towards. The angle formed between these bevels in the region of the support 14 and the plane of the stand frame 1 is preferably about 50-65 °. Each rocker arm 15 is L-shaped with different, long legs formed, in particular, the length of the leg 17 is determinative of the adjustment height in the process in the stand-up auxiliary position.

The first actuator 23 is connected to its second component 24 via a hinge plate 39 on

Stanchion 1 hinged to achieve an additional possibility of movement in manipulated seat frame movements.

In Figure 2, the seating · is shown in the basic position, the front Sitzmöbelwange and the front fittings are not visible, but the view of the other functional elements is released.

In Figure 3Ά and 3B, the seating is shown with actuated second actuator, the seating is raised at the front edge to allow a comfort seat position, 1 which could also be a certain stand-up auxiliary position.

While in Fig. 3Ά the gear members are virtually transparent, they are shown in Fig. 3B in an actual opaque arrangement.

In Figure 4, the seating is with. shown second, third and fourth actuator, so that the seating is raised forward, the backrest pivoted to the comfort position and the footrest is swung.

In Figure 5, the seating is shown in the stand-up position, with only the first actuator is actuated.

In Figure 6, the seating is shown, wherein the first actuator and the second actuator are actuated.

In Figure 7, finally, the seating is shown with partially retracted first actuator and fully extended second actuator, in which position the seating occupies a parallel position to the basic position, ie a seat height change. -The actuators are each designed as linear actuators, in a housing, a servomotor is arranged and from the housing protrudes a linearly adjustable actuator, depending on the design of the actuator pulling (first actuator) or oppressive (second and third actuator) acts , All levers and fittings are arranged in pairs, especially in the area of the two side walls of the seating frame or the seat. The supports 14 are arranged so that they are arranged lying in the basic position between the outer side walls of the seating frame inside. All articulated joints and joint axes are aligned so that they run parallel to the crossbars of the stand frame.

The invention is not limited to the embodiment, but in the context of the disclosure often variable. 1

All new, disclosed in the description and / or drawing single and combination features are considered essential to the invention.

Claims (10)

1. Seating with standing upright, consisting of a base frame (1) and a seating furniture forming the seating frame (2) with side cheeks, backrest (36) and optionally a footrest (Ί3), 'wherein the seating furniture frame (2) via articulated lever with the stand frame (2) 1) is connected, which are pivotable by means of at least one motorized actuator, so that the seating furniture frame from a basic position opposite. the stand frame in a stand-up auxiliary position is adjustable, characterized in that approximately centrally of the longitudinal extent of the rack (1) on both sides in the region of its longitudinal sides in each case a vertically from the stand frame (1). ., from the support plane of the stand frame (1) directed away projecting support (14) is fixed or arranged, that at each support (14) on its the stand frame (1) facing away from each end rocker lever (15) is articulated, the joint axes (16) are directed coaxially with each other and across the longitudinal extent of the stand frame (1), a first end (17) of each rocker arm (15) being directed towards the rear end of the stand frame (1) and terminating below the rear end of the seat frame (2) , wherein this first end (17) is articulated in each case on a respective lever (18) projecting from below the seat frame (2), these hinge axes being directed parallel to the articulation axes of the rocker lever (15) and coaxial with one another, 20) of each rocker arm (15) to the front end of the rack (1) is directed and ends below the front or middle portion of the seat frame (2), wherein the two second ends (20) a part (21), in particular a tube, are connected, which has an adjusting lever (22) on which a first component of a first actuator (23) is articulated, the second component (24) on the stand frame (1) preferably in the rear end region of the stand frame (1) is hinged, so that the rocker lever (15) by. the actuator (23) is rotatable about the support-side pivot points (16), and that at the front end portion of the stand frame (1) toggle lever (26) are hinged to a first end, whose second ends are fixed to a crossmember (28), the in the basic position of the seat, the first end (17) of the rocker arm (15) the stand frame (1) approximated and the toggle lever (26) is pivoted and in the stand-up position, the first end ( 17) of the rocker lever (15) from the stand frame (1) moves away and the toggle (26) is stretched. 2. Seating furniture according to claim 1, characterized in that the rotatable crossmember (28) on which the second ends of the toggle lever (26) are fixed, a) adjusting lever (31) on which a second actuator (32) is articulated , which is hinged at the other end- on the seat frame (2) in the rear, wherein by means of the second actuator (32) the toggle (26) from the pivoted-home position are adjustable in a pivoted Streck'lage, so that when only operated 'dès' second actuator (32), the seat frame (2) is pivoted up at the front end and the rear end portion remains in the home position. 3. Seating furniture according to one of claims 1 or 2, characterized in that the first end of the toggle lever (26) via the articulation point (27) on the stand frame (1) is extended and in each case forms a support foot (35) which pivots with pivoted levers ( 26) has a distance from the level of support of the chair and is supported on the support level when the toggle lever (26) is fully or nearly fully extended. 4. Seating furniture according to one of claims 1 to 3, characterized .gekennzeichnet that the drawing path of the toggle lever (26) by a between the levers of the toggle lever (26) effective stop (3Ö) is limited. 5. Seating furniture according to one of claims 1 to 4, characterized in that the backrest (36) of the chair is pivotally mounted on the seat frame (2) and on the seat frame (2) a third actuator (37) is angeordhet, at the lower end of Backrest (36) is articulated and by means of which the backrest (36) is adjustable in angle. 6. Seating furniture according to claim 5, characterized in that the backrest · (36) via 'e-ine - push-pull rod with a at the front end of the seat frame (2) held out and swivel footrest (13) is coupled, so that when from the sitting position in a rest position displaced backrest (36), the footrest (13). is swung out, and is pivoted in the backward displacement of the backrest (36) in the sitting position, or the footrest (13) is actuated with a fourth actuator. 7. Seating furniture according to one of claims 1 to 6, characterized in that the stand frame (1) is approximately rectangular and consists of mutually parallel longitudinal struts (3) and these end and center connecting cross struts (4,5), wherein the supports ( 14) are fastened to the central transverse strut (5) near the longitudinal struts (3). 8. Seating furniture according to one of claims 1 to 7, characterized in that the supports (14) obliquely forward obliquely to the front end of the stand frame (1), wherein the between frame (1) and supports (14) formed 'angle 50 ° to 65 °. 9. Seating furniture according to one of claims 1 to '8, characterized in that each rocker arm (15) is L-shaped and hinged in the abutting region of its two legs on the support (14), wherein in the normal position both legs of the rocker arm (15) are directed towards the level of support of the chair. 10. Seating furniture according to one of claims 1 to 9, characterized in that the first actuator (23) with its second component (24) via a hinge lug (39). the .Standgestell (1), in particular on a, rear cross member (4) of the rack (1) is articulated.